JPH07262902A - Earth leakage circuit breaker - Google Patents

Abstract

(57) [Abstract] [Purpose] The wiring work inside the main body is reduced, and it is configured so that it can be assembled from one direction. Obtain an earth leakage breaker that can be secured. [Structure] A support member formed of a synthetic resin material is provided with the leakage control section on the back side thereof, and the load side terminal, an overcurrent trip mechanism section, an opening / closing mechanism section, and a movable contact section are mounted thereon. The zero-phase current transformer, the leakage current removing mechanism portion, the test switch portion and the like are integrally arranged to form an internal element portion, and the internal element portion is incorporated in the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground fault circuit breaker which is relatively small in size and is configured to operate by detecting a ground fault by means of a zero-phase current transformer and an electronic ground fault controller. .

[0002]

2. Description of the Related Art FIG. 27 is an exploded perspective view showing a component structure of a conventional earth leakage breaker. In the figure, 1 is an upper case made of a synthetic resin material, 2 is a push button for a test switch protruding from the upper surface of the upper case 1, 3 is a load side terminal, and 3a is formed at an end of the load side terminal 3. The cable connecting portion is connected to the power supply cable of the printed wiring board 20 or the like. 3b is a coil terminal connecting portion formed at the end of the load side terminal 3, 4 is an overcurrent trip mechanism section, 5 is an overcurrent trip coil attached to the overcurrent trip mechanism section 4, and 5a is an overcurrent trip coil. It is one coil end of the current trip coil 5, and is connected to the coil end connecting portion 3b of the load side terminal 3 by welding or brazing. Cables 6 and 7 are connected to the other coil end 5b by welding or brazing, and penetrate the zero-phase current transformer 26. In the above configuration, the load side terminal 3, the overcurrent trip mechanism section 4, the overcurrent trip coil 5 and the like are composed of one pole to three poles for single phase or three phase, but here there are two poles. An example will be explained.

Reference numeral 8 is a test switch section, 9 and 10 are cables led from the test switch section 8, and 11 is an opening / closing mechanism section having a manual operation handle. Reference numeral 12 is an earth leakage trip mechanism portion, 13 and 14 are cables led out from the earth leakage trip mechanism portion 12, 15 is a main body case formed of a synthetic resin material, and 16 and 17 are fixed contact portions attached to the main body case 15. , 18 and 19 are movable contact parts, 20 is a printed wiring board, 21 is a control circuit component mounted on the printed wiring board 20, 22 to 25 are cables mounted on the printed wiring board 20, and 26 is a zero-phase current transformer. , 26a is a through hole of the zero-phase current transformer 26, 27 and 28 are cables led out from the zero-phase current transformer 26 and connected to the printed wiring board 20, 29 is a main body case 15
Is a bottom cover attached to the bottom of the.

In the assembly of the conventional earth leakage breaker composed of the above-mentioned components, first the control circuit component 21 is mounted on the printed wiring board 20, and then the cables 22, 23, 24 ,.
25, 27, 28 are manually inserted into the printed wiring board 20, and then soldering is performed from the back surface. Next, in assembling each component into the main body case 15, first, the overcurrent trip mechanism unit 4, the test switch unit 8, the opening / closing mechanism unit 11,
Incorporating the earth leakage trip mechanism 12 into the main body case 15,
Next, the cables 6 and 7 are connected to the through hole 26a of the zero-phase current transformer 26.
After being inserted into, the ends are connected to the ends of the movable contact portions 18, 19 by welding or brazing. Similarly, cable 9
Is inserted into the through hole 26a of the zero-phase current transformer 26, the end of the cable and the end of the cable 25 are bundled and soldered to one cable connecting portion 3a, and then the ends of the cables 10 and 13 and the cable 23, The terminals of 24 are bundled and soldered to the other cable connecting portion 3 a and incorporated in the main body case 15.
Next, the end of the cable 14 and the end of the cable 22 are connected by soldering, and the wiring work inside the earth leakage breaker is completed. As described above, the printed wiring board 20 is also the main body case 1
5, the bottom cover 29 and the upper case 1 are assembled to complete the assembly of the main body.

[0005]

As described above, in the conventional earth leakage circuit breaker, the cables 22, 23, 24, 25 and 2 are first manually assembled in assembling the printed wiring board 20.
There is insertion work of 7, 28, etc., which is an obstacle to automation. Also, in assembling the main body, there is a work of inserting each cable into the through hole 26a of the zero-phase current transformer 26 and a work of incorporating it into the main body case 15, which complicates the work and increases the number of assembling steps. I have a problem.

Further, in recent years, there has been a demand for a high-performance earth leakage circuit breaker in which a surge resistance function and a harmonic wave resistance function are added to the conventional earth leakage interruption function, and it is necessary to add the same without changing the outer dimensions. In order to realize this high functionality, the surface area of the printed wiring board inevitably increases, but in the conventional earth leakage circuit breaker, there is no storage space for the components mounted on the printed wiring board. Has become a hindrance factor.

As a conventional example for improving partial assembly, there is one disclosed in Japanese Patent Application Laid-Open No. 4-312732. FIG. 28 shows a typical block diagram of the parts. The assembly in this conventional component configuration is performed by the cable group 3
0 is bundled and fixed by a heat-shrinkable tube 31, and a protective plate 32 is arranged in a position close to the movable part of the earth leakage breaker. Can be resolved to some extent. However, in assembling the main body, the work of inserting the individual cables into the through hole 26a of the zero-phase current transformer 26 and the main body case 15 is not lost, so that the fundamental problem described above can be solved. I can't reach it.

Further, as a conventional example for improving other partial assembling, there is one disclosed in Japanese Patent Laid-Open No. 63-259937. FIG. 29 shows this typical parts configuration diagram.
Shown in. In this conventional component configuration, the support member 33
The zero-phase current transformer 26 and the terminal group 34 are incorporated in the wiring, and the wiring related to the zero-phase current transformer 26 is performed on the basis of the support member 33, and the connection with other components and the printed wiring board 20 is not performed. The pin members 35 and 36 are featured. According to this conventional example, since the part related to the zero-phase current transformer 26 is integrated, the assembling property of this part at the time of assembling the main body is improved, but the manual wiring work is required at the time of this pre-assembly. , Cables 9 and 1 even when the main body is assembled
The work of inserting 0, 13, 14 and the like into the main body case remains, and the fundamental problem described above cannot be solved.

The conventional earth leakage breaker is constructed as described above, and since the number of wirings in the earth leakage breaker is large, there are problems that the number of assembling steps is large, the wiring is complicated, and an assembly error occurs. Had. Further, in the conventional earth leakage circuit breaker, there is no space for housing the mounted parts of the printed wiring board to cope with the high functionality, which has been an obstacle to the development of new products.

The present invention is intended to solve the above problems, and a first object thereof is to eliminate internal wiring work at the time of assembling the main body. A second object is to realize a one-way assembly in the main body assembly by rationalizing the assembly and wiring work of the zero-phase current transformer with a rational component configuration. A third object is to obtain an earth leakage breaker capable of securing a mounting component storage space of a printed wiring board for high functionality.

[0011]

An earth leakage circuit breaker according to the present invention includes a load side terminal, an overcurrent trip mechanism portion, an opening / closing mechanism portion, and a movable contact on a predetermined surface side of a supporting member formed of a synthetic resin material. Part, a zero-phase current transformer, an earth leakage removal mechanism portion, a test switch portion, etc. are integrally provided, and an earth leakage control portion is mounted on the back side of a predetermined surface of the support member to form an internal element portion. This internal element part is built in a case.

Further, electrical connection of the zero-phase current transformer, the earth leakage trip mechanism portion, and the test switch portion to the earth leakage control portion is made through the respective connectors.

Further, the earth leakage control section is configured by stacking two single-sided printed wiring boards and connecting and connecting the two printed wiring boards by a clip member.

Furthermore, the earth leakage control section is configured by stacking two single-sided printed wiring boards and connecting and connecting the two printed wiring boards with a clip member, and the clip member is provided with a connector mechanism. The zero-phase current transformer, the earth leakage trip mechanism portion, and the test switch portion are configured to be connected to the earth leakage control portion via connectors, respectively.

Further, an earth leakage control section, a load side terminal, an overcurrent trip mechanism section, an opening / closing mechanism section, a movable contact section, a zero-phase current transformer, an earth leakage trip mechanism section, a test switch section, etc. are integrally arranged. The supporting member for forming the internal element portion is formed so as to form a part of the outer wall of the case.

Further, the outer wall forming a part of the case is formed, and a zero phase change is formed on a predetermined surface side of a synthetic resin material support member formed by inserting a printed wiring board for mounting a zero phase current transformer. The zero-phase current transformer is mounted on the printed wiring board for mounting the current transformer, and the load side terminal, overcurrent trip device, switching mechanism section, movable contact section, earth leakage trip mechanism section, test switch section, etc. are integrated. Of the support member, the wiring board material is formed on the back surface side of the predetermined surface side of the support member so as to have a flat portion and a rising portion, and a circuit pattern is provided on the flat portion to arrange the control circuit components. The internal element part is configured by installing a leakage control part that is provided and provided with a connector part at the rising part, and the internal element part is fitted in a case.

Further, an L-shaped conductive member is fixed to the printed wiring board of the leakage control section so that one end thereof is upright, and a zero-phase current transformer is fitted to the upright portion of the L-shaped conductive member to form a printed wiring board. A flexible conductor connected to the movable contact portion is connected to the other end of the L-shaped conductive member that is mounted, and a test switch portion is provided near the earth leakage trip mechanism portion. Further, the wiring connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is formed by a bendable printed wiring board.

Further, the wiring connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is made by a wiring member having a circuit pattern formed on a member formed of a synthetic resin material, and the test switch portion is a part of the wiring member. It is configured by using.

Further, the earth leakage control section is provided from the back side of the case, and the overcurrent trip mechanism section, the opening / closing mechanism section, the movable contact section, the earth leakage trip mechanism section, the test switch section, etc. are provided from the front side of the case, The leakage control unit is connected to the leakage control unit via pin conductors linearly inserted between the front side and the back side.

Further, a zero-phase current transformer and a pin conductor are mounted on the printed wiring board of the leakage control section, and one end of the primary conductor of the zero-phase current transformer is connected to the movable contact portion through the back side of the printed wiring board. The other end of the primary conductor is configured as a pin conductor and is linearly inserted toward the front side.

Furthermore, the through-hole of the zero-phase current transformer is arranged so as to be parallel to the printed wiring board of the leakage control unit, and is mounted on the printed wiring board together with the primary conductor, and one end of the primary conductor is in movable contact. The flexible conductor connected to the child portion is connected, and the other end of the primary conductor is connected to the pin conductor.

Further, the through-hole of the zero-phase current transformer is arranged so as to be perpendicular to the printed wiring board of the leakage control section and mounted on the printed wiring board, and the overcurrent trip mechanism section and the leakage trip mechanism are arranged. Section, test switch section, etc., are each provided with a pin conductor that is linearly inserted from the front side to the back side, the printed wiring board is provided with through holes facing the pin conductor, and The pin conductors inserted into the through holes are connected on the back side.

Furthermore, the through-hole of the zero-phase current transformer is arranged so as to be parallel to the printed wiring board of the leakage control unit, mounted on the printed wiring board, and the pin conductor provided in the overcurrent trip mechanism is installed. It is bent to pass through the through-hole of the zero-phase current transformer, and the movable contact portion is further connected to the tip thereof.

Furthermore, a part of the load side terminal fitting is formed as a pin conductor and connected to the printed wiring board of the leakage control section.

Further, a pin conductor provided in the earth leakage trip device and the test switch section is inserted in the case.

Further, a circuit pattern is provided on a molding member made of a synthetic resin material in which a zero-phase current transformer is inserted and a guide hole for inserting a pin conductor is provided to form a wiring board, and a control circuit is formed on this wiring board. A component that mounts components to form a leakage control unit, and connects the pin conductors provided in the overcurrent trip mechanism unit, the leakage trip mechanism unit, the test switch unit, etc. to the leakage control unit through the pin conductor insertion guide holes. Is.

Furthermore, the zero-phase current transformer and the printed wiring board are integrally made of a synthetic resin material, and a guide hole for inserting a pin conductor is provided to constitute an earth leakage control section, and an overcurrent trip mechanism section, The pin conductors provided in the earth leakage trip mechanism portion, the test switch portion and the like are connected to the earth leakage control portion through the pin conductor insertion guide holes.

[0028]

In the earth leakage breaker configured as described above, the internal element portion is configured by incorporating the main member centering on the support member having many opening surfaces, so that the main body case can be assembled from one direction. It is possible and therefore easy to assemble and the internal element part is securely fixed. Further, it is possible to arrange the components using the space below the load side terminals.

Further, the electrical connection of the zero-phase current transformer for detecting the zero-phase current, the electrical leakage trip mechanism portion, the test switch portion and the like to the electrical leakage control portion is made through the respective connectors. Therefore, the work of welding and brazing is omitted during assembly.

Furthermore, since two single-sided printed wiring boards are stacked and the connection and connection of the two printed wiring boards are constituted by the clip member, the connection and connection of the two printed wiring boards are easy and the surface area is large. A large printed wiring board can be used.

Furthermore, the connection and connection of the two printed wiring boards are constituted by a clip member, and the clip member is provided with a connector mechanism, and the leakage current removing mechanism portion and the test switch portion are connected via a connector. If so, a printed wiring board having a large surface area can be used, assembly is easy, and the internal element portion is securely fixed.

Further, the structure in which the support member for integrally forming the earth leakage trip mechanism portion, the test switch portion and the like to form the internal element portion forms a part of the outer wall of the case is a structure. It's easy, and you can leave room for mounting parts.

Further, the zero-phase current transformer is mounted on a support member made of a synthetic resin material formed by inserting a printed wiring board for mounting the zero-phase current transformer, and the leakage control section is made of a synthetic resin material. The wiring board material is formed so as to have a flat portion and a rising portion, a circuit pattern is provided on the flat portion, control circuit components are arranged, and a connector portion is provided on the rising portion. It will be easier.

Furthermore, on the printed wiring board of the leakage control section,
The L-shaped conductive member is fixed so that one end is upright, and the zero-phase current transformer is fitted to the upright portion of the L-shaped conductive member and mounted on the printed wiring board. When the wiring connecting the control unit is formed of a bendable printed wiring board, a connecting cable is not required, and therefore automatic assembly is further facilitated.

Further, the wiring for connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is formed by a wiring member in which a circuit pattern is provided on a member formed of a synthetic resin material, and the test switch portion is a part of the wiring member. The number of parts is reduced and the automatic assembling is further facilitated.

Further, the leakage control section is provided from the rear side of the case, and the overcurrent trip mechanism section, the opening / closing mechanism section, the movable contact section, the leakage trip mechanism section, the test switch section, etc. are provided from the front side of the case. Wiring to the earth leakage control section is easy if the earth leakage trip mechanism section and the test switch section are connected to the earth leakage control section via pin conductors that are linearly inserted from the front side to the back side. become.

Furthermore, the zero-phase current transformer and the pin conductor are mounted on the printed wiring board of the leakage control unit, and the primary conductor of the zero-phase current transformer is also made into the pin conductor and is linearly inserted toward the front side. With this configuration, the leakage control unit can be easily incorporated and the wiring can be simplified.

Further, in the case where the through holes of the zero-phase current transformer are arranged such that the through holes are parallel to the printed wiring board of the leakage control unit and mounted on the printed wiring board together with the primary conductor, the arrangement of the primary conductor is simple. become.

Further, in the case where the movable contact portion is provided on the printed wiring board of the earth leakage control portion through the conductive spring member, the number of cables can be reduced and the connection between each member and the pin conductor is the upper surface of the main body case. Can work in. Further, since all of the internal elements are mounted on the printed wiring board, the assembly into the main body case becomes easy.

Furthermore, the through-hole of the zero-phase current transformer is arranged so that it is perpendicular to the printed wiring board of the leakage control section, and is mounted on the printed wiring board. , Each of which has a pin conductor inserted linearly from the front side to the back side and which connects the pin conductors inserted into the through holes on the back side of the printed wiring board, is collectively soldered on the back side of the printed wiring board. Can be attached.

Furthermore, the through conductor of the zero-phase current transformer is arranged so as to be parallel to the printed wiring board of the leakage control section, mounted on the printed wiring board, and the pin conductor provided in the overcurrent trip mechanism section. By bending and passing through the through-hole of the zero-phase current transformer and further connecting the movable contact portion to the tip, the wiring is simpler and easier.

Further, in the case where a part of the load side terminal fitting is formed as a pin conductor and connected to the printed wiring board of the leakage control section,
Wiring is simplified because the number of pin conductors is reduced.

Further, in the case where the pin conductors provided in the earth leakage trip device and the test switch section are inserted in the case, the number of pin conductors is further reduced, wiring is simple, and the problem of insulation treatment does not occur.

Furthermore, a zero-phase current transformer is inserted,
Moreover, a circuit pattern is provided on a molded member made of a synthetic resin material provided with a guide hole for inserting a pin conductor to configure a leakage control section,
The zero-phase current transformer can be securely fixed in the case where the pin conductors provided in the overcurrent trip mechanism section, the earth leakage trip mechanism section, the test switch section, etc. are connected to the earth leakage control section through the pin conductor insertion guide holes. At the same time, the pin conductor can be inserted smoothly.

Further, the zero-phase current transformer and the printed wiring board are integrally made of a synthetic resin material, and a guide hole for inserting a pin conductor is provided to constitute a leakage control section. The one in which the pin conductor provided in the tripping mechanism section, test switch section, etc. is connected to the leakage control section through the above-mentioned guide hole for inserting the pin conductor, the characteristics of the printed wiring board are utilized and the zero-phase current transformer is reliable. It can be fixed to and the pin conductor can be inserted smoothly.

[0046]

【Example】

Example 1. 1 and 2 are perspective views showing an earth leakage circuit breaker according to an embodiment of the present invention, and FIG. 2 is a perspective view of the internal element portion of FIG. 1 seen from below. In the figure, 1 to 28 are the same as or correspond to the respective parts of the conventional earth leakage breaker shown in FIG. 27, and the description thereof will be omitted.

In FIGS. 1 and 2, reference numeral 37 denotes a printed wiring board having a surface area more than twice that of the conventional one, on which the control circuit component 21 is mounted. Reference numerals 38, 39, and 40 denote connectors mounted on the printed wiring board 37, and constitute the leakage control unit 36. Reference numeral 41 is a supporting member formed of a synthetic resin material, 41a is a holding portion for holding the load side terminal 3 and the overcurrent trip mechanism portion 4, 41b is a test switch portion 8, an opening / closing mechanism portion 11 and an earth leakage trip mechanism portion 12. 41 c is a claw portion that holds the printed wiring board 37, 41 d is a convex portion that holds the zero-phase current transformer 26, and 42 is the movable contact portion 1.
The pressing member supports 8 and 19 and forms a part of the opening / closing mechanism 11. Reference numeral 43 denotes a main body case in this embodiment, which is made of a synthetic resin material like the main body case 15 of the conventional example. 43a is a body case 43
The bottom 43b is a recess formed in the side surface of the main body case 43, and is a portion into which the support member 41 is fitted. Reference numeral 44 denotes a connector connected to the ends of the cables 27 and 28 led out from the zero-phase current transformer 26, and is connected to the connector 40 mounted on the printed wiring board 37. Reference numeral 45 denotes a connector connected to the ends of the cables 9 and 10 led out from the test switch section 8 and connected to the connector 38 of the printed wiring board 37. Reference numeral 46 is a connector connected to the ends of the cables 13 and 14 led out from the earth leakage trip mechanism 12, and is connected to the connector 39 of the printed wiring board 37.

Assembling of the earth leakage breaker in this embodiment is as follows.
First, the zero-phase current transformer 26 is attached to the support member 41 via the convex portion 41d.
Then, the load side terminal 3 and the overcurrent tripping mechanism portion 4 are also attached to the support member 41. Next, after the ends of the cables 6 and 7 led out from the through holes 26 a and the ends of the movable contact portions 18 and 19 are connected by welding or brazing, they are attached to the support member 41 via the holding member 42. Next, the test switch section 8, the opening / closing mechanism section 11 and the earth leakage removing mechanism section 12 are attached to the support member 41, the connectors 44 and 40, the connectors 45 and 38, and the connectors 46 and 39 are connected, and then the earth leakage control section 36 is connected to the claw portion. 41
It is attached to the support member 41 via c. The above-mentioned assembly is characterized by being performed mainly on the support member 41 having many opening surfaces, and the main parts can be easily assembled. Further, in the subsequent assembly, the support member 41 incorporating each component, that is, the internal element portion 35, is inserted into the main body case 43 via the recess 43b.
All the assembly is completed by assembling into the above and attaching the upper case 1. Therefore, since the internal element portion 35, that is, the support member 41 is securely fixed, and the bottom portion 43a corresponding to the conventional bottom cover is formed in the main body case 43, one direction based on the main body case 43 is used. Can be assembled. Further, since the size of the printed wiring board 37 uses the space below the load side terminal 3, the area is more than half the area of the bottom surface portion of the main body case 43. With this configuration, it is possible to secure a space for mounting the mounted parts of the printed wiring board for high functionality.

Example 2. In the first embodiment, the zero-phase current transformer 26 and the leakage control unit 36 are coupled by using cables 27 and 28, and the test switch unit 8, the leakage trip mechanism 12 and the leakage control unit 36 are connected to each other. Is the cable 9, 10, 1
3 and 14 are used for connection, but as shown in FIGS. 3 and 4, if connection is performed using only the connector or connection is performed using the integrated cable using the connector, the connection can be achieved. The structure is simple and assembly from one direction is easy. That is, FIG. 4 will be described in detail with reference to FIGS.
FIG. 4 is a perspective view of the internal element portion of FIG. 3 as seen from below. In the figure, 1 to 28 are the same as or correspond to the respective parts of the conventional earth leakage breaker shown in FIG. 27, and the description thereof will be omitted.

In FIGS. 3 and 4, reference numeral 37 denotes a printed wiring board having a surface area more than twice that of the conventional one, on which the control circuit component 21 is mounted. Reference numerals 38 and 40 denote connectors mounted on the printed wiring board 37, and the leakage control unit 36 is configured by these. 41 is a support member made of a synthetic resin material, 4
1a is a holding portion for holding the load side terminal 3 and the overcurrent trip mechanism portion 4, 41b is a test switch portion 8 and an opening / closing mechanism portion 1
1 and a holding portion for holding the earth leakage trip mechanism portion 41
c is a claw portion that holds the printed wiring board 37, 41e is a rising portion, 51 is a circuit pattern formed on the rising portion 41e,
26b is a circuit pattern 51 derived from the zero-phase current transformer 26.
Is a pin for electrical connection connected to one end of the connector, and 54 is a connector connected to the other end of the circuit pattern 51 and mounted on the rising portion 41e. Reference numeral 55 denotes an integrated cable, which is led out from the test switch unit 8, the opening / closing mechanism unit 11, and the earth leakage trip mechanism unit 12. Reference numeral 56 is a connector connected to the end of the cable 55.

In this embodiment, the zero-phase current transformer 26 is attached to the rising portion 41e having the circuit pattern 51 via the electrical connection pin 26b. In addition, the test switch unit 8, the opening / closing mechanism unit 11, the earth leakage removing mechanism unit 12, and the connector 56 in which these cables are integrated.
However, the mounting is basically the same as that of the first embodiment, but the number of cables and connectors is reduced as compared with the first embodiment, and the assembling is easy. The connector 54 is connected to the connector 40, and the connector 56 is connected to the connector 38. The mounting and assembling are basically the same as those in the first embodiment, but the number of cables and connectors is reduced as compared with the first embodiment, and the assembling can be further simplified. It should be noted that the same effects as those of the first embodiment can be expected with respect to fixing the support member, assembling it from one direction, and coping with higher functionality.

Example 3. FIG. 5 shows another embodiment relating to the configuration of the leakage control unit 36. That is, in the figure, 37a and 37b are single-sided printed wiring boards, and the printed circuit boards 37a and 37b are superposed on each other to form the leakage control section 36. Reference numeral 37p denotes a pad portion formed of a large number of pads formed at the ends of the open surfaces of the printed wiring boards 37a and 37b, and 37c is a clip member attached so as to sandwich the pad portions 37p of the printed wiring boards 37a and 37b. The elasticity of the clip member 37c maintains electrical contact with the pad portion 37p. Reference numerals 38, 39 and 40 denote connectors, and the connectors 38, 39 and 40 of the first embodiment.
Is similar to. Configurations other than the above are described in Examples 1 and 2
Since it is the same as, the description will be omitted. This embodiment corresponds to the expansion of the surface area of the printed circuit board when the function of the earth leakage breaker is enhanced, and since the two ordinary single-sided printed wiring boards can be easily electrically connected to each other, the cost is reduced. In the case of a high-sided double-sided board, a through-hole connection and a multi-layer board are not required, which can contribute to cost reduction. In addition,
Other effects such as the improvement of the assemblability are the same as those in the first embodiment.

Example 4. FIG. 6 shows still another embodiment regarding the configuration of the leakage control unit 36. That is, in the figure, 37a and 37b are single-sided printed wiring boards, and the printed circuit boards 37a and 37b are superposed on each other to form the leakage control section 36. Reference numeral 37p denotes a pad portion formed of a large number at the end of the open surface of the printed wiring boards 37a and 37b.
Reference numeral c is a clip member attached so as to sandwich the pad portions 37p of the printed wiring boards 37a and 37b. The elasticity of the clip member 37c maintains electrical contact with the pad portion 37p. 57 is a connector pin formed on the side surface of each clip member 37c,
The connectors 44 and 56 are connected. This embodiment is basically the same as the third embodiment, but by forming the connector pin 57 on the clip member 37c,
It is not necessary to mount a connector on the printed wiring boards 37a and 37b, and further cost reduction can be achieved. The other effects such as the improvement of the assemblability are the same as those of the first embodiment.

Example 5. In the first, second, and third embodiments described above, the internal element portion 35, that is, the support member 41, is configured to be fitted into the recess 43b formed on the side surface of the main body case 43. It can also be configured to form part of the outer wall. That is, FIG.
In FIG. 8, reference numeral 41 is a support member, and the main body case 43
Using a synthetic resin material similar to
It is formed so as to be the outer wall of No. 3. 41a is a holding portion for holding the load side terminal 3 and the overcurrent trip mechanism portion 4,
1b is a holding portion that holds the test switch portion 8, the opening / closing mechanism portion 11 and the earth leakage trip mechanism portion 12, 41c is a claw portion that holds the printed wiring board 37, 41d is a convex portion that holds the zero-phase current transformer 26, A pressing member 42 supports the movable contact portions 18 and 19, and forms a part of the opening / closing mechanism portion 11. The internal element portion 35, that is, the support member 41 configured as described above is fitted and stored in the storage portion 43c of the main body case 43. The configuration other than the above is the first embodiment.
The description is omitted because it is the same as the above.

This embodiment is the same as the first embodiment except that the support member 41 forming a part of the outer wall of the main body case 43 is assembled with each member centered around the support member 41. In this case, the internal element portion 35, that is, the support member 4
In assembling the 1 and the main body case 43, the assembly mistake can be reduced because they can be easily assembled from the outside. It should be noted that the same effect as that of the first embodiment can be expected with respect to the assembly from one direction and the enhancement of functionality.

Example 6. 9 and 10 show a printed wiring board 37 according to the fifth embodiment, in which a synthetic resin material is molded to form a wiring board material, and the connection of each part with a connector is simple. Is. In the figure, 41
Is a support member in this embodiment, 41a is a holding part for holding the load side terminal 3 and the overcurrent trip mechanism part 4, 41b
Is a holding portion that holds the test switch portion 8, the opening / closing mechanism portion 11 and the earth leakage removing mechanism portion 12. In this case, the test switch unit 8, the opening / closing mechanism unit 11 and the earth leakage removing mechanism unit 12 are integrated, and the connecting cable is also not used as much as possible. Reference numeral 51 is a printed wiring board insert-molded when the support member is molded, 26b is a pin for electrical connection which is led out from the zero-phase current transformer 26 and connected to one end of the printed wiring board 51, and 54 is a printed wiring board 51. It is a connector mounted on the other end. Reference numeral 62 denotes a cable in which the test switch section 8 and the earth leakage trip mechanism section 12 are integrated.
Reference numeral 63 denotes a connector connected to the end of the cable 62 and fixed to the side surface of the test switch unit 8. Reference numeral 64 is a wiring board material formed by injection molding or the like of a synthetic resin material, and rising portions 64a, 64 are provided on a flat surface portion corresponding to a printed wiring board.
b is formed. Reference numeral 65 denotes a circuit pattern formed over the flat surface portion of the wiring board material 64 and the rising portions 64a and 64b. The control circuit component 21 is provided on the flat surface portion and the rising portion 6 is formed.
Connectors 66 and 67 are mounted on 4a and 64b.

In this embodiment, the zero-phase current transformer 26 is mounted on the insert-molded printed wiring board 51, and the cables of the test switch section 8 and the earth leakage trip mechanism section 12 are integrated. The connector 63 should be fixed to the side surface of the test switch section 8. Further, instead of the conventional printed wiring board 37, the rising portions 64a, 64
The wiring board member 64 having b and the circuit pattern 65 is formed, and the control circuit component 21 and the connectors 66 and 67 are mounted. Therefore, the connector 54 becomes the connector 67,
The connector 63 is coupled to the connector 66. As described above, this assembly is basically the same as that of the fifth embodiment, but the cable is almost eliminated as compared with the fifth embodiment.
Based on the housing part 43c of the main body case 43 as a base, the wiring board material 64, the supporting member 41, the integrated test switch part 8, the opening / closing mechanism part 11, the earth leakage tripping mechanism part 12, and the upper case 1 are used from one direction. In addition, automatic assembly is possible.

Example 7. 11, 12, and 13 have a configuration in which a cable for connection is not used. In the figure, 41 is a support member in this embodiment,
a is a holding portion that holds the load side terminal 3 and the overcurrent trip mechanism portion 4, 41b is a test switch portion 76 and the opening / closing mechanism portion 1.
1 is a holding portion that holds the leakage current removing mechanism portion 1 and the leakage current removing mechanism portion 12. In this case, the test switch section 8, the opening / closing mechanism section 11 and the earth leakage trip mechanism section 12 are integrated as described later. Reference numeral 37 is a printed wiring board, 70 is a connector mounted on the printed wiring board 37, and 37d and 37e are mounting holes provided at predetermined positions of the printed wiring board 37 for mounting L-shaped conductive members 71 and 72 to be described later. Is. Reference numerals 71 and 72 denote a pair of L-shaped conductive members. One of the L-shaped conductive members 71 has a movable contact portion 18 via the cable 7, and the other L-shaped conductive member 72 has a movable contact via the cable 6. Contact part 19
Are connected. 71a and 72a are attachment holes, and the L-shaped conductive members 71 and 72 are attached to the printed wiring board 37 by the rivets 73.

26 is a zero-phase current transformer, and 26a is a zero-phase current transformer 2.
The through-hole formed in the center of 6 and 26c are zero-phase current transformers 2
6 is a lead for electrical connection derived from 6. Reference numeral 74 denotes a printed wiring board for connection, which is formed by using a bendable printed circuit board. 75 is a circuit pattern formed on the connection printed wiring board 74, 76 is a spring member for a test switch mounted on the connection printed wiring board 74, and 77 is a test switch also mounted on the connection printed wiring board 74. Stopper pins 78 are connectors mounted on the printed wiring board 74 for connection. Reference numeral 12a is a pin member for electrical connection formed on a part of the earth leakage trip mechanism 12, 43 is a main body case in this embodiment, and 43a is a bottom portion of the main body case 43.

In this embodiment, first, the printed wiring board 3
7, the L-shaped conductive members 71 and 72 are set, and the rivets 73 for caulking are inserted into the mounting holes 71a and 37d and the mounting holes 72a and 37e, and are caulked to be fixed. Next, the zero-phase current transformer 26 is connected to the L-shaped conductive member 71,
It is inserted into the rising portion of 72 and is mounted on the printed wiring board 37 via the lead 26c for electrical connection to configure the leakage control unit 36. The above-mentioned assembly is automatically performed on a normal printed wiring board mounting line. In addition, printed wiring board 7 for connection
The assembly of 4 is also based on the printed wiring board 74 for connection and the spring member 7
6, the stopper pin 77, the connector 78, and the earth leakage removal mechanism 12 are mounted on a normal printed wiring board mounting line. Next, in assembling the main body part, the main body case 43 is used as a base, and the leakage control part 36, the support member 41, the load side terminal 3, the overcurrent trip mechanism part 4, the holding member 42, and the integrated test switch part. 8, the opening / closing mechanism unit 11 and the earth leakage removing mechanism unit 12 are inserted and assembled. At this time, the connectors 78 and 70 are connected to each other to be connected. Then
The ends of the rising portions of the L-shaped conductive members 71 and 72, the individual overcurrent trip coil ends 5b, the individual load-side terminals 3 and the individual overcurrent trip coil ends 5a are welded or brazed. Attach and connect. As described above, this embodiment does not require the partial assembly as in the conventional example, and can be automatically assembled from the main body case 43 in one direction. It should be noted that the same effect as that of the first embodiment can be expected with respect to the high functionalization.

Example 8. In the integrated test switch unit 8, opening / closing mechanism unit 11, and earth leakage trip mechanism unit 12 of the seventh embodiment, a bendable printed circuit board is used, but as shown in FIGS. It is also possible to form a wiring member molded from a material. That is, 74 is a wiring member formed by injection molding a synthetic resin material, and 75 is a predetermined circuit pattern formed on the wiring member 74. 76
Is a spring member and constitutes a part of the test switch unit 8. The spring member 76 is provided integrally with the wiring member 74. A push button portion 76a is provided above the spring member 76 and corresponds to the push button 2 of the conventional example.
The contact portions 77a and 77b are provided on the spring member 76, and the contact portion 77b is provided on the wiring member 74 so as to be electrically connected to the circuit pattern 75. Reference numeral 78 is a connector connected to the circuit pattern 75.

This embodiment is characterized in that a wiring member 74 having a spring member 76 and a push button portion 76a is formed instead of the foldable printed board used in Embodiment 7. The number of parts can be further reduced as compared with the seventh embodiment. It should be noted that the same effects as those of the seventh embodiment can be expected with respect to automatic assembly from one direction based on the main body case, support for high functionality, etc.

Example 9. The above Examples 1 to 8 are characterized by assembly from one direction, but depending on the structure, even if assembled from two directions, the front side and the back side, the wiring work is easy. , It is possible to automate the assembly and obtain the earth leakage breaker which can correspond to the higher functionality. That is, one example thereof will be described with reference to FIGS. FIG. 16 is an exploded perspective view, and FIG. 17 is a sectional view of a main part of the leakage control unit. In these figures, the same or corresponding parts as those described with reference to FIG. 27 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIGS. 16 and 17, 3c is a through hole formed in each load-side terminal 3, 80 is a printed wiring board, and 2 is a printed wiring board.
6 is a zero-phase current transformer, 26a is a through hole formed in the center of the zero-phase current transformer 26, 81, 82, 83, 84, 87, 88
Is a pin conductor for electrical connection mounted on the printed wiring board 80,
85 and 86 are pin conductors for electrical connection which are connected to the other ends of the cables 6 and 7 to which the movers 18 and 19 are connected at one end, and which have bent portions as shown in FIG.
It is connected to the. The pin conductors 87 and 88 are the load side terminal 3
To form a power circuit for the printed wiring board 80.

In this embodiment, the printed wiring board 80, the test switch section 8 and the earth leakage trip mechanism section 12 are connected by a pin conductor for electrical connection which is linearly inserted between the front side and the back side. To do. In this case, the pin conductor may be a mixture of one that is inserted from the front side to the back side and one that is inserted from the back side to the front side. In any case, the wiring is simple and the assembly is easy to automate.

Example 10. In the ninth embodiment, the pin conductor may be a mixture of one that is inserted from the front side toward the back side and one that is inserted from the back side toward the front side. As shown in FIG. 17, the one in which the pin conductors 81 to 88 are mounted only on the printed wiring board 80 side also has an excellent effect. That is, this can reduce the number of cables. Also, the main body assembly is a printed wiring board 80.
Is inserted from the lower side of the main body case 15 and other parts are set from the upper side, and then wiring with various pin members is performed. Since this wiring work is performed on the open upper surface of the main body case 15, automatic soldering is performed. Work becomes easy.

Example 11. In this embodiment, the printed wiring board 8 is used.
The zero-phase current transformer 26 is mounted on 0. That is, FIG.
In FIG. 8, 80 is a printed wiring board in this embodiment, 8
1 to 88 are pin conductors for electrical connection mounted on the printed wiring board 80, 91, 92, 93, 94 are circuit patterns for large currents formed on the printed wiring board 80, and 26 is a zero phase in this embodiment. The current transformer 26a is a through hole formed in the center of the zero-phase current transformer 26, and the zero-phase current transformer 26 has a through-hole 26.
It is mounted such that a is parallel to the printed wiring board 80. 9
Numerals 5 and 96 are bus bar members, which conduct through the through holes 26a of the zero-phase current transformer 26, and both ends of which are circuit patterns 91 and 9
It is mounted on the pads leading to 2, 93, and 94.

In this embodiment, the zero-phase current transformer 26, bus bar members 95 and 96, various pin members 81 to 88, and movable contacts 18 and 19 are mounted and assembled around the printed wiring board 80. The present invention is characterized in that the leakage control unit 35 is configured, and compared with the tenth embodiment.
Since all the assembling is performed on one surface of the printed wiring board 80, the assembling property can be further improved. The effects of the reduction of the number of cables and the automatic soldering work are the same as in the tenth embodiment.

Example 12 In this embodiment, the printed wiring board 8 is used.
In addition to the zero-phase current transformer 26, the movable contact portions 18 and 19 are also mounted on the zero. That is, in FIG. 19, 80 is a printed wiring board extended to the mounting position of the movable contact portions 18, 19, 91, 92 are circuit patterns communicating from one end of the bus bar members 95, 96, 97, 98 are circuit patterns 91, 9
It is a compression spring member mounted at the end of No. 2 and is made of a copper alloy material having excellent conductivity. This compression spring member 9
Movable contact portions 18, 19 are connected to the ends of 7, 98. The other parts are configured similarly to those of the eleventh embodiment.

This embodiment is basically the same as the eleventh embodiment, but by mounting the compression spring members 97 and 98 communicating with the movable contact portions 18 and 19 on the printed wiring board 80, the leakage control section is realized. Since all 35 can be assembled on a normal board mounting line, automatic assembly can be facilitated. The effects of reducing the number of cables and automatic soldering work are the same as in the eleventh embodiment.

Example 13 In the above Examples 10 to 12,
Pin conductors 81 to 88 for electrical connection are provided on the printed wiring board 80 side.
However, the pin conductor for electrical connection may be configured to be inserted from the front surface side toward the printed wiring board 80 side. That is, one example thereof is shown in FIG.
0, FIG. 21 will be described in detail. 20 is an exploded perspective view showing the configuration of parts, and FIG. 21 is a cross-sectional view of the essential parts showing the zero-phase current transformer and the pin conductor shown in FIG. In these figures, the same or corresponding parts as those described with reference to FIG. 27 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIGS. 20 and 21, 101 and 102
Is a pin conductor for electrical connection attached to each load side terminal 3 and constitutes a power supply circuit of the leakage control section 35. Reference numerals 103 and 104 denote pin conductors for electrical connection formed by extending the coil end portion 5b of each overcurrent trip coil 5, and are inserted into the through holes 26a of the zero-phase current transformer 26. Reference numerals 105 and 106 are pin conductors for electrical connection formed on the test switch section 8, and 107 and 108 are pin conductors for electrical connection formed on the earth leakage trip mechanism section 12. 80
Is a printed wiring board in this embodiment, and 111 and 112 are through holes formed in the printed wiring board 80, into which the pin conductors 101 and 102 are inserted. Also, the through hole part 1
Pin conductors 105 and 106 are inserted into 15 and 116,
The pin conductors 107, 1 are provided in the through holes 117, 118.
08 is inserted. The zero-phase current transformer 26 is mounted on a printed wiring board 80, and cables 6 and 7 are connected to the inserted pin conductors 103 and 104. The cables 6 and 7 pass through the back surface of the printed wiring board 80, and the movable contacts 18, 19
Are connected. Reference numeral 119 is a soldering part after each pin conductor is inserted into the printed wiring board 80.

In this embodiment, each component having pin conductors for electrical connection is set in the main body case 15 from above, and then the printed wiring board 80 on which the zero-phase current transformer 26 is mounted.
That is, the leakage control unit 35 is set from below and each pin conductor is inserted into each through hole. In this state, the movable contact 1
Cables 6 and 7 having 8 and 19 are connected to pin conductors 103 and 1
No. 04, and the inserted pin conductors are soldered together. Since this work can be performed on the open bottom surface of the main body case 15, the work is easy and can be automated. In addition, the reduction of the number of cables and the like are performed in the tenth embodiment.
The same effect as ~ 12 can be expected.

Example 14 Although the through-hole 26a of the zero-phase current transformer 26 is perpendicular to the printed wiring board 80 in the thirteenth embodiment, this embodiment shows that the through-phase 26a of the zero-phase current transformer 26 is zero-phase change with respect to the printed wiring board 80. The sinker 26 is mounted so that the through holes 26a are parallel to each other. 22 and 23, 103 and 104 are pin conductors for electrical connection formed by extending the coil end portion 5b of each overcurrent trip coil 5, and 103a and 104a are pin conductors 103 and 10.
A bent or curled portion formed at the end of 4; 103
b and 104b are bent or curled portions 103a and 104
It is a horizontal part connected to a. Reference numerals 101 and 102 denote pin conductors for electrical connection formed by extending the coil end portions 5a of the individual overcurrent trip coils 5, and the pin conductor 10
Reference numerals 1 and 102 are connected by welding or brazing at locations where they contact the individual load side terminals 3. 80 is a printed wiring board in this embodiment, and 111 and 112 are printed wiring boards 8.
The pin conductors 101 and 102 forming the power supply circuit are inserted in the through hole portion formed in 0. Further, the pin conductors 105 and 106 are inserted into the through hole portions 115 and 116, and the pin conductor 1 is inserted into the through hole portions 117 and 118.
07 and 108 are inserted. The zero-phase current transformer 26 is mounted so that the through hole 26a is parallel to the printed wiring board 80.

In this embodiment, the zero-phase current transformer 26 is inserted into the horizontal portions 103b and 104b of the pin conductor, and the movable contacts 18 and 19 are connected to the ends by welding or brazing. The zero-phase current transformer 26 inserted as described above is set in the main body case 15 together with each component from above. Next, the printed wiring board 80 is set from below, each pin member is inserted into each through hole portion, and soldering is performed. As described above, in this embodiment, the mounting work of the printed wiring board 80 alone can be completely automated, and the conventional cables 6 and 7 are unnecessary. It should be noted that the movement of the movable contacts 18 and 19 in the up-down direction follows as shown by the arrow in FIG. Further, since the work of assembling the main body can be performed on the open bottom surface of the main body case 15, the work is easily performed and automation can be performed. It should be noted that the same effect as that of the thirteenth embodiment can be expected in the reduction of the number of cables.

Example 15. This example corresponds to Example 13,
The structure of the pin conductor is simpler than that of No. 14. That is, in FIG. 24, 3d and 3e are pin conductor portions for electrical connection formed by extending a part of the individual load side terminals 3. The pin conductor portions 3d and 3e are provided on the printed wiring board 8
0 is inserted into the through-hole parts 111 and 112 to form a power supply circuit of the leakage control part 35. The other part is in Example 13
Alternatively, it is configured in the same manner as 14 or. In this embodiment, the pin conductor for forming the power supply circuit is simplified and the number of parts is reduced.

Example 16. In this embodiment, the configurations of the pin conductors used for the test switch section 8 and the earth leakage trip mechanism section 12 are improved. That is, in FIG. 24, pin conductors 105, 106, 107 for electrical connection,
The main body case 15 is insert-molded.
The upper ends of the pin conductors 105, 106, 107, 108 are connected to the cables 9, 10, 13, 14 of the test switch section 8 and the earth leakage trip mechanism section 12, and the lower ends thereof are the through-hole sections 115 of the printed wiring board 80. , 116, 11
7, 118. The other parts are the same as in Examples 13 and 14.
Alternatively, it is configured in the same manner as 15. In this embodiment, each pin member can be securely fixed and insulated.
Further, since the work of assembling the main body can be performed on the open top and bottom surfaces of the main body case 15, the work can be easily performed and automation can be performed.

Example 17 This embodiment is the same as the first embodiment described above.
The printed wiring board 80 of Nos. 3, 14 and 15 is molded from a synthetic resin material, and the zero-phase current transformer 26 is inserted at that time. That is, in FIG.
Is a zero-phase current transformer in this embodiment, and 26aa is a through hole formed in the center of the zero-phase current transformer 26. Reference numeral 130 denotes a zero-phase current transformer 26 formed by injection molding of a synthetic resin material or the like.
Is inserted into the wiring board, 130a is an individual introduction guide hole formed at a position facing the pin conductors 101 to 104 for electrical connection derived from each component, and 120 is a circuit formed on the upper and lower surfaces of the wiring board 130. It is a pattern.

In this embodiment, the basic assembly is the same as that of the thirteenth embodiment, but the printed wiring board 80 of the thirteenth embodiment is used.
Instead of the wiring board 130, the zero-phase current transformer 26 can be fixed by inserting the zero-phase current transformer 26 and forming the guide hole 130a for introducing the pin conductor for electrical connection. It can be surely performed, and the pin conductor can be smoothly introduced, and the assembling property can be further improved as compared with the thirteenth embodiment. Further, since the work of assembling the main body can be performed on the open bottom surface of the main body case 15 as in the case of the thirteenth embodiment, the work is easily performed and automation can be performed.

Example 18. In this embodiment, the zero-phase current transformer 2
6 and the printed wiring board 80 are integrated by a synthetic resin material to constitute the leakage control section 35. That is, in FIG.
Reference numeral 140 denotes a synthetic wiring board obtained by molding the zero-phase current transformer 26 and the printed wiring board 80 by injection molding of a synthetic resin material or the like, and each of them is formed at a position facing a pin conductor for electrical connection derived from each component. The introduction guide 140a is also formed at the same time. This embodiment is basically the same as the seventeenth embodiment, but since a normal printed wiring board 80 can be used, highly reliable mounting is possible. Since the work of assembling the main body can be performed on the open bottom surface of the main body case 15 as in the case of the thirteenth embodiment, the work can be easily performed and automation can be performed.

Example 19 In each of the above examples, in addition to various pin conductors and connection parts of bus bar materials, if necessary, insulation treatment such as fitting of an insulating tube and formation of an insulating film is performed, and various cables are insulated wires. Alternatively, a flat cable is used.

[0082]

Since the present invention is constructed as described above, it has the following effects.

By constructing the internal element part by incorporating the main member centering on the support member, it is possible to assemble the main body case from one direction. Therefore, the assembly is easy,
The internal element section is securely fixed. Further, since the leakage control section can be mounted by utilizing the space below the load side terminal, a printed wiring board having a large surface area can be used. As a result, it is easy to deal with high functionality while being compact.

Further, for the leakage control section, a zero-phase current transformer,
Since the electric leakage tripping mechanism section and the test switch section are electrically connected through the respective connectors, the assembly from one direction becomes easy.

Furthermore, since two single-sided printed wiring boards are superposed and the connection and connection of the two printed wiring boards are constituted by the clip member, the connection and connection of the two printed wiring boards are easy and the surface area is large. A large printed wiring board can be used. This makes it easier to deal with higher functionality.

Further, the support member for integrally forming the earth leakage trip mechanism portion, the test switch portion and the like to form the internal element portion is configured to form a part of the outer wall of the case. The structure is simple and inexpensive.

Further, by mounting the zero-phase current transformer on the support member made of a synthetic resin material formed by inserting the printed wiring board for mounting the zero-phase current transformer, the number of cables can be reduced,
Easy to assemble.

Further, an L-shaped conductive member is fixed to the printed wiring board of the leakage control unit so that one end is upright, and a zero-phase current transformer is fitted to the upright portion of the L-shaped conductive member to be mounted on the printed wiring board. However, the wiring that connects the earth leakage trip mechanism section and the test switch section to the earth leakage control section is made of a bendable printed wiring board, so a cable for connection is not required, so automatic assembly is easier. become.

Furthermore, the wiring for connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is made by a wiring member having a circuit pattern formed on a member made of a synthetic resin material, and the test switch portion is a wiring member. In the case of using one part, the number of parts is reduced and automatic assembly becomes easier.

Further, the leakage control section is provided from the rear side of the case, and the overcurrent trip mechanism section, the opening / closing mechanism section, the movable contact section, the leakage trip mechanism section, the test switch section, etc. are provided from the front side of the case. If the leakage trip mechanism and test switch are connected to the leakage control unit via pin conductors that are linearly inserted between the front side and the back side, respectively, the wiring to the leakage control unit is Simple and easy to automate.

Further, the zero-phase current transformer and the pin conductor are mounted on the printed wiring board of the leakage control unit, and the primary conductor of the zero-phase current transformer is also made into a pin conductor so that it is linearly inserted toward the front side. In the configuration described above, the leakage control unit can be easily housed and the wiring is simple, so that automation can be facilitated.

Furthermore, the arrangement in which the through-holes of the zero-phase current transformer are arranged in parallel with the printed wiring board of the leakage control unit and mounted on the printed wiring board together with the primary conductor makes wiring easier. Automation becomes easy.

Further, in the case where the movable contact portion is provided on the printed wiring board of the earth leakage control portion through the conductive spring member, the number of cables can be reduced and the connection between each member and the pin conductor can be made on the upper surface of the main body case. Since all the internal elements are mounted on the printed wiring board, it is easy to assemble into the main body case and the assembly is easy to automate.

Further, the through-hole of the zero-phase current transformer is arranged so as to be perpendicular to the printed wiring board of the leakage control section and mounted on the printed wiring board, and is mounted on the leakage removal mechanism section, the test switch section, etc. , Each of which has a pin conductor inserted linearly from the front side to the back side and connects the pin conductor inserted into the through hole on the back side of the printed wiring board, soldering work on the back side of the printed wiring board Automation can be facilitated.

Furthermore, the through-hole of the zero-phase current transformer is arranged so as to be parallel to the printed wiring board of the leakage control unit and mounted on the printed wiring board, and the pin conductor provided in the overcurrent trip mechanism unit is attached. Bending and passing through the through-hole of the zero-phase current transformer and connecting the movable contact to the tip of the zero-phase current transformer further simplifies wiring and facilitates automation.

Furthermore, in the case where a part of the load side terminal fitting is formed as a pin conductor and connected to the printed wiring board of the leakage control section, the number of pin conductors is reduced, wiring is simple and automation is facilitated.

Further, in the case where the pin conductors provided in the earth leakage trip device and the test switch section are inserted into the case, the number of pin conductors is further reduced, wiring is simple and automation is facilitated.

Further, a circuit pattern is provided on a molded member made of a synthetic resin material in which a zero-phase current transformer is inserted and a guide hole for inserting a pin conductor is provided to constitute an earth leakage control section, which is an overcurrent trip mechanism. The pin conductor provided in the section, the earth leakage trip mechanism section, the test switch section, etc. is connected to the earth leakage control section through the guide hole for inserting the pin conductor, the zero-phase current transformer can be securely fixed, and It can be inserted smoothly, the number is reduced, wiring is simple, and automation is easy.

Furthermore, a zero-phase current transformer is inserted,
Moreover, a circuit pattern is provided on a molded member made of a synthetic resin material provided with a guide hole for inserting a pin conductor to configure a leakage control section,
The zero-phase current transformer can be securely fixed by connecting the pin conductors provided in the overcurrent trip mechanism section, the earth leakage trip mechanism section, the test switch section, etc. to the earth leakage control section through the pin conductor insertion guide holes. At the same time, the pin conductors can be inserted smoothly, the number of pin conductors is reduced, and the wiring is simple and automation is easy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an earth leakage breaker according to an embodiment of the present invention.

FIG. 2 is a perspective view of an internal element portion of the earth leakage breaker of FIG. 1 viewed from below.

FIG. 3 is an exploded perspective view showing an earth leakage circuit breaker which is Embodiment 2 of the present invention.

4 is a perspective view of an internal element portion of the earth leakage breaker of FIG. 3 viewed from below.

FIG. 5 is an exploded perspective view showing an earth leakage circuit breaker which is Embodiment 3 of the present invention.

FIG. 6 is an exploded perspective view showing an earth leakage breaker which is Embodiment 4 of the present invention.

FIG. 7 is an exploded perspective view showing an earth leakage breaker which is Embodiment 5 of the present invention.

FIG. 8 is a perspective view of an internal element portion of the earth leakage breaker of FIG. 7 viewed from below.

FIG. 9 is an exploded perspective view showing an earth leakage breaker which is Embodiment 6 of the present invention.

10 is a perspective view of an internal element portion of the earth leakage breaker of FIG. 9 as viewed from below.

FIG. 11 is an exploded perspective view showing an earth leakage breaker which is Embodiment 7 of the present invention.

FIG. 12 is an exploded perspective view showing a leakage control unit of the leakage breaker of FIG. 11.

FIG. 13 is an exploded perspective view showing an earth leakage removal mechanism portion of the earth leakage breaker of FIG. 11.

FIG. 14 is a perspective view showing a main part of an earth leakage breaker that is Embodiment 8 of the present invention.

FIG. 15 is an exploded perspective view showing a main part of an earth leakage circuit breaker which is Embodiment 8 of the present invention.

FIG. 16 is an exploded perspective view showing an earth leakage circuit breaker which is Embodiments 9 and 10 of the present invention.

17 is a cross-sectional view showing a portion of the zero-phase current transformer of the earth leakage breaker of FIG.

FIG. 18 is an exploded perspective view showing an earth leakage breaker which is Embodiment 11 of the present invention.

FIG. 19 is an exploded perspective view showing an earth leakage breaker which is Embodiment 12 of the present invention.

FIG. 20 is an exploded perspective view showing an earth leakage breaker which is Embodiment 13 of the present invention.

21 is a cross-sectional view showing a portion of the zero-phase current transformer of the earth leakage circuit breaker of FIG. 20.

FIG. 22 is an exploded perspective view showing an earth leakage breaker which is Embodiment 14 of the present invention.

23 is a cross-sectional view showing a portion of the zero-phase current transformer of the earth leakage breaker of FIG. 22.

FIG. 24 is an exploded perspective view showing an earth leakage breaker according to Embodiments 15 and 16 of the present invention.

FIG. 25 is a cross-sectional view showing the main parts of an earth leakage circuit breaker that is Embodiment 17 of the present invention.

FIG. 26 is a sectional view showing a main part of an earth leakage circuit breaker which is Embodiment 18 of the present invention.

FIG. 27 is a perspective view showing a component structure of a conventional earth leakage breaker.

FIG. 28 is an overall perspective view showing a cable wiring state in a conventional earth leakage breaker.

FIG. 29 is a plan view showing a mounted state of a zero-phase current transformer in a conventional earth leakage breaker.

[Explanation of symbols]

 3 Load side terminal 4 Overcurrent trip mechanism section 8 Test switch section 11 Switching mechanism section 12 Earth leakage trip mechanism section 15 Main body case 18, 19 Movable contact section 26 Zero-phase current transformer 35 Internal element section 36 Leakage control section 37 Printed wiring board 41 Support member 43 Body case

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiyuki Adachi 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Production Technology Laboratory (72) Inventor Tsuneo Hamaguchi 8-1-1 Tsukaguchi Honmachi, Amagasaki Production Engineering Laboratory, Mitsubishi Electric Corporation

Claims (19)

[Claims] 1. An overcurrent trip device that is activated when a circuit overcurrent is detected, by disposing a power supply side terminal on one side and a load side terminal on the other side of a case made of a synthetic resin material. A mechanical section, an opening / closing mechanism section that is operated by a manual operation handle in conjunction with the operation of the overcurrent trip mechanism section, a movable contact section and a fixed contact section that are opened and closed by the opening / closing mechanism section, and A zero-phase current transformer that detects a zero-phase current, a leakage control unit that includes a printed wiring board and that generates a leakage signal corresponding to the zero-phase current, and the opening / closing mechanism unit is activated when the leakage signal is received. In an earth leakage breaker configured by incorporating an earth leakage trip mechanism portion and a test switch portion for generating the earth leakage signal by a manual operation, a support member formed of a synthetic resin material, a predetermined surface side of the support member, Load side terminal, Overcurrent trip mechanism section, open / close mechanism section, movable contact section, zero-phase current transformer, earth leakage trip mechanism section,
A test switch section and the like are integrally arranged, and the leakage control section is mounted on the back side of a predetermined surface of the support member to form an internal element section, and the internal element section is incorporated in the case. An earth leakage circuit breaker characterized by the above. 2. The electrical connection of the zero-phase current transformer, the earth leakage trip mechanism portion, and the test switch portion with respect to the earth leakage control portion is made through a connector, respectively. Earth leakage circuit breaker. 3. The earth leakage control unit according to claim 1, wherein the earth leakage control unit is configured so that two printed wiring boards are superposed and connected by a clip member and connected. vessel. 4. The clip member is provided with a connector mechanism for connecting the zero-phase current transformer, the earth leakage trip mechanism portion, and the test switch portion to the earth leakage control portion. Earth leakage circuit breaker. 5. The earth leakage breaker according to claim 1, wherein the support member is configured to form a part of the outer wall of the case. 6. A power supply side terminal and a load side terminal are disposed on one side of a case made of a synthetic resin material and the other side is provided with an overcurrent trip device which operates when an overcurrent of a circuit is detected. A mechanical section, an opening / closing mechanism section that is operated by a manual operation handle in conjunction with the operation of the overcurrent trip mechanism section, a movable contact section and a fixed contact section that are opened and closed by the opening / closing mechanism section, and A zero-phase current transformer that detects a zero-phase current, a leakage control unit that includes a printed wiring board and that generates a leakage signal corresponding to the zero-phase current, and the opening / closing mechanism unit is activated when the leakage signal is received. In an earth leakage breaker configured by incorporating an earth leakage removal mechanism portion and a test switch portion for generating the earth leakage signal by a manual operation, an outer wall which forms a part of the case is formed and the zero phase current transformer is mounted. Printed wiring A support member made of a synthetic resin material formed by inserting a plate, the zero-phase current transformer is mounted on the printed wiring board for mounting the zero-phase current transformer on the predetermined surface side of the support member, and the load is applied. A side terminal, an overcurrent trip device, an opening / closing mechanism section, a movable contact section, an earth leakage trip mechanism section, a test switch section, etc. are integrally provided, and a synthetic resin material is provided on the back side of the predetermined surface of the support member. A circuit board member having a flat portion and a rising portion, a circuit pattern is provided on the flat portion to dispose control circuit parts, and a connector portion is provided at the rising portion. A ground fault circuit breaker characterized in that an internal element portion is configured by mounting the internal element portion on the case, and the internal element portion is incorporated into the case. 7. An L-shaped conductive member is fixed to a printed wiring board of an earth leakage control section so that one end thereof is upright, and a zero-phase current transformer is fitted to the upright portion of the L-shaped conductive member to provide the printed wiring board. 7. The test switch section is mounted on a second end of the L-shaped conductive member, and the other end of the L-shaped conductive member is connected to the movable contact section, and a test switch section is provided in the vicinity of the leakage trip mechanism section.
The earth leakage breaker according to any one of 1. 8. The wiring for connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is formed by a bendable printed wiring board.
The earth leakage breaker according to any one of 1. 9. The wiring for connecting the earth leakage trip mechanism portion and the test switch portion to the earth leakage control portion is formed by a wiring member having a circuit pattern formed on a member formed of a synthetic resin material, and the test switch portion includes the wiring. 9. The structure according to claim 7 or 8, wherein a part of the member is used.
The earth leakage circuit breaker described. 10. An overcurrent trip device which is activated when a circuit overcurrent is detected, wherein a power supply side terminal and a load side terminal are disposed on one side of a case made of a synthetic resin material and on the other side. A mechanical section, an opening / closing mechanism section that is operated by a manual operation handle in conjunction with the operation of the overcurrent trip mechanism section, a movable contact section and a fixed contact section that are opened and closed by the opening / closing mechanism section, and A zero-phase current transformer that detects a zero-phase current, a leakage control section that is formed by using a printed wiring board and that generates a leakage signal corresponding to the zero-phase current, and the opening / closing mechanism section when receiving the leakage signal. In an earth leakage breaker configured by incorporating an earth leakage trip mechanism section for activating the above and a test switch section for generating the earth leakage signal by manual operation, the overcurrent trip mechanism section and the opening / closing mechanism section are provided on one surface side of the case. , Movable Contact part, earth leakage removal mechanism part,
A test switch unit and the like are provided, and the leakage control unit is provided on the back side of the case, and the leakage control unit, the leakage tripping mechanism unit, and the test switch unit are provided between the one side and the back side, respectively. An earth leakage circuit breaker, characterized in that it is connected via a pin conductor that is linearly inserted. 11. A primary conductor of a zero-phase current transformer consisting of a zero-phase current transformer and a pin conductor is mounted on a printed wiring board of an earth leakage control section, and this primary conductor is printed together with other pin conductors for connection. 11. The wiring board is inserted and arranged.
The earth leakage circuit breaker described. 12. The zero-phase current transformer is arranged in such a manner that the through hole of the primary conductor is parallel to the printed wiring board of the leakage control unit and is mounted on the printed wiring board together with the primary conductor. The earth leakage breaker according to any one of claims 1 to 10. 13. The zero-phase current transformer is arranged such that the through-holes are parallel to the printed wiring board of the leakage control unit, mounted on the printed wiring board together with the primary conductor, and connected to one end of the primary conductor. 11. The earth leakage breaker according to claim 1, wherein a movable contact portion is provided on the pad portion of the formed circuit pattern via a conductive spring member. 14. The printed wiring board is provided with a through hole facing the pin conductor, and the pin conductor is inserted into the through hole from the front surface side or the back surface side of the printed wiring board. The earth leakage circuit breaker described. 15. A pin conductor provided in an overcurrent trip mechanism part, which is arranged so that a through hole of a zero-phase current transformer is parallel to a printed wiring board of an earth leakage control part and mounted on the printed wiring board. 11. The earth leakage breaker according to claim 10, further comprising a bent portion, a through hole of the zero-phase current transformer, and a movable contactor connected to the tip of the through hole. 16. The earth leakage breaker according to claim 1, wherein a part of the load-side terminal metal fitting is formed into a pin conductor and is connected to a printed wiring board of the earth leakage control section. . 17. The earth leakage breaker according to claim 10, wherein a pin conductor provided in the earth leakage trip device and the test switch portion is inserted in the case. 18. A wiring board is formed by forming a circuit pattern on a molding member made of a synthetic resin material, in which a zero-phase current transformer is inserted and a guide hole for inserting a pin conductor is provided, and a control circuit is formed on the wiring board. The components are mounted to form the leakage control unit, and the pin conductors provided in the overcurrent trip mechanism unit, the leakage trip mechanism unit, and the test switch unit are connected to the leakage control unit through the pin conductor insertion guide holes. 16. The earth leakage breaker according to claim 10, claim 11, claim 14 or claim 15. 19. A zero-phase current transformer and a printed wiring board are integrally made of a synthetic resin material, and a guide hole for inserting a pin conductor is provided to constitute a leakage control section. A pin conductor provided in a tripping mechanism portion, a test switch portion, or the like is connected to a leakage control portion through the pin conductor insertion guide hole. The earth leakage circuit breaker described.