JPH0629863Y2 - Switch for distribution board - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a switch for a distribution board arranged in a distribution board installed in a building, a factory or the like.

[Prior art]

As a switchboard switch of this type, a structure in which a handle 3 which can be tilted up and down is projected from the front surface of the body 1 is conventionally known as shown in FIG. A movable contactor 4 that moves back and forth when the handle 3 is tilted is provided in the body 1, and a terminal piece 51 protruding from the terminal 5 and a conductive plate 7 connected to the conductive bar 2 are provided. Both ends of the movable contact 4 are brought into contact with and separated from each other. The terminal 5 is exposed on the front surface of the body 1.

[Problems to be solved by the device]

In the above-described conventional configuration, the terminal 5 is exposed on the front surface of the body 1 regardless of whether the electric path from the conductive bar 2 to the terminal 5 is opened or closed. There is a risk of doing so and is dangerous. In order to solve this problem, it is conceivable to provide a terminal cover that covers the terminal 5, but there is a problem in that another component is required, leading to an increase in the number of components. The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a switch for a distribution board that secures safety by increasing the number of parts and preventing connection work when the contacts are closed. It is a thing.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention comprises a handle protruding upward and downward from one surface of the body, and a switch mechanism inside the body at a position where the handle protrudes substantially orthogonal to the one surface of the body. When the switch mechanism is closed on one of the above-mentioned one side of the body, in the switch for the distribution panel, the switch is closed and the switch mechanism is closed at the position where the handle is approximately parallel to the one side of the body. The terminals are arranged so as to be exposed at the portion covered by the handle.

[Action]

According to the above configuration, when the switch mechanism is closed, a part of the terminal exposed from the body is covered with the handle, so that the wiring work cannot be performed while the power is on, and safety is ensured. It has advantages.

【Example】

As shown in FIG. 1 and FIG. 2, a body 1 made of an insulating material such as thermosetting synthetic resin is provided, and the body 1 is a box body having an opening on one side, and a body 11 It is composed of a flat plate-shaped cover 12 which is attached to the opening surface. The body 11 and the cover 12 are fixed to each other by a pair of fixed tacks 13. At the rear part (right part in FIG. 1) of the body 1, there are formed recesses 14 that are open to the rear surface and both side surfaces.
The rear surface is covered with a lid plate 15 which is integral with the body 1. The lid plate 15 can be easily removed from the body 1,
The connecting portion with the body 1 is formed to be relatively thin. A conductive bar 2 made of a conductive material such as a metal plate is provided in the recess 14.
The conductive bar 2 is inserted into the bottom surface of the recess 14 and the cover plate 1 described above.
It is sandwiched between 5 and. On both sides of the recess 14 in the width direction of the conductive bar 2 (vertical direction in FIG. 1), introduction grooves 16 opening to the rear surface of the body 11 are formed,
Each pair of engaging grooves 1 is branched into each introduction groove 16.
7a and 17b are formed. A handle insertion window 18 through which the lever portion 31 of the handle 3 is exposed is formed on the front surface of the body 1, and a tip edge 18a of the upper peripheral surface of the handle insertion window 18 projects forward from the lower front surface of the body 1, Moreover, it inclines upward toward the rear. The front surface of the body 1 above the handle insertion window 18 forms an inclined surface 19 that inclines rearward as it goes upward.
A name plate receiver 19a to which a name plate can be attached is formed on the plate 9. The handle 3 includes a lever portion 31 protruding from the handle insertion window 18 and a cam portion 32 that is continuous with the lever portion 31 and is formed in a substantially J shape, and a connecting portion between the lever portion 31 and the cam portion 32. A shaft hole 33 is formed in the shaft. In the shaft hole 33, the rotary shaft 3 protruding from the inner peripheral surface of the body 11 is provided.
4 is inserted, and the handle 3 rotates about the rotation shaft 34. That is, the lever portion 31 can be raised and lowered between a state where it projects substantially orthogonal to the front surface of the body 1 and a state where it falls down along the front surface of the body 1. A locking protrusion 35 is provided on the outer surface of the connecting portion between the lever portion 31 and the cam portion 32. When the lever portion 31 is in a tilted state, the locking protrusion 35 serves as the upper peripheral surface of the handle insertion window 18. The handle 3 is locked by engaging with the locking recess 36 formed in the. The cam portion 32 of the handle 3 has an operation piece 41 of the movable contactor 4 when the lever portion 31 is raised.
Press. Further, a character 37 indicating an ON state is written on a portion of the outer side surface of the lever portion 31 that enters the handle insertion window 18 when the lever portion 31 is raised. The character 37 is exposed on the front surface. The character 38 indicating the off state is the body 1
, Which is exposed on the front side of the lever portion 31 and is covered by the lever portion 31 when the lever portion 31 is tilted. The movable contactor 4 is formed in a substantially rectangular shape in which an operating piece 41 and a contacting piece 42 that contacts and separates from the conductive bar 2 are formed continuously, and a pivot hole 43 is formed near the apex. The contact piece 42 is attached by a contact pressure spring 44 mounted between the contact piece 42 and the inner peripheral surface of the body 1,
It is biased toward the conductive bar 2. A fulcrum protrusion 52 protruding from the tip of a terminal piece 51 extending from the terminal 5 is inserted into the pivot hole 43 of the movable contact 4, and the movable contact 4 swings around the fulcrum protrusion 52. It is designed to move. Therefore, the cam portion 32 of the handle 3 is attached to the operation piece 41.
When is not in contact, the tip end of the contact piece 42 contacts the conductive bar 2 by the spring force of the contact pressure spring 44, and the operation piece 41 is pressed by the cam portion 32 of the handle 3.
The contact piece 42 separates from the conductive bar 2. In this way, the switch mechanism section is constructed. The terminal 5 includes a terminal fitting 53 continuous with the base of the terminal piece 51 and a terminal screw 54 screwed into the terminal fitting 53.
Faces a jig insertion hole 55 that is opened on the front surface of the body 1. Further, a wire introducing port 56 is opened in the body 1 below the terminal 5. Therefore, if an external electric wire is introduced through the electric wire introducing port 56, a driver is inserted from the jig insertion hole 55 and the terminal screw 54 is tightened, the external electric wire connected to the load side can be connected to the terminal 5. Of. Here, the jig insertion hole 55 is set in a positional relationship so as to be covered by the lever portion 31 when the lever portion 31 of the handle 3 is tilted, and foreign matter is prevented from touching the terminal 5 when turned on. . According to the above configuration, the conductive bar 2 is formed in the recess 14 and the cover plate 15.
The body 1 can be attached to the conductive bar 2 by inserting it between and. Further, the movable contactor 4 is pivotally supported on the terminal 5 and is brought into contact with and separated from the conductive bar 2, so that a contact portion is formed between the conductive bar 2 and the movable contactor 4 to form the conductive bar 2 and the terminal 5. Since the contact point portion is formed only at one position between the contact points, the contact point pressure is stably determined only by the spring force of the contact pressure spring 44, and variations in operating characteristics among products can be prevented. The distribution board switch A formed as described above is disposed in the distribution board 20 as shown in FIG.
Inside the distribution board 20, a pair of left and right mounting angles 21 are arranged. Between both mounting angles 21, a mounting plate 23 to which a main breaker 22 is mounted and a mounting plate 25 to which a plurality of branch breakers 24 and a switch A for distribution board are mounted are mounted. The main breaker 22 is for single-phase three-wire, and three main bars 26a to 26c are connected to the load side terminals of the main breaker 22.
A branch bar 27 is connected to a main part of the main bars 26a and 26c, and the branch bar 27 is connected to a branch breaker 24. The conductive bar 2 is connected to the lower end of the trunk bar 26b, which is a neutral wire, and a plurality of switches A are arranged on the conductive bar 2. Therefore, if the branch breaker 24 and the switch A are appropriately combined and a load is connected between them, power can be supplied to the load via the branch breaker 24. If the distribution board 20 is attached at a height suitable for operating the handle 22a of the main breaker 22, the switch A will be located below the eye level of the operator. Since the nameplate receiver 19a of A is formed on the inclined surface 19 as described above, the nameplate can be easily seen by the operator. In the above embodiment, the conductive bar 2 was inserted between the bottom surface of the recess 14 and the cover plate 15. However, when the conductive bar 2 having a large current capacity is used, as shown in FIG. 15 is removed, the cover plate 29 is attached, and the recess 14
The conductive bar 2 may be sandwiched between the bottom surface of the cover and the cover plate 29. That is, the cover plate 29 is substantially U-shaped, and is formed in a shape in which the engaging pieces 29 a extend outward from the tip edges of both legs. And one of the engaging grooves 17a, 17b formed in each of the introducing grooves 16 is engaged with one of the engaging pieces 29a.
The cover plate 29 can be attached to the body 1 by engaging with. Here, which engagement groove 17a, 1
Whether to use 7b may be determined according to the thickness of the conductive bar 2. In this way, by using the cover plate 29, it is possible to cope with a plurality of types of conductive bars 2 having different current capacities. In addition, since the cover plate 29 covers the back surface of the conductive bar 2, it is possible to prevent dust from entering the container 1. In the above embodiment, the engaging grooves 17a and 17b are provided at two locations, but if it is necessary to support more types of current capacities, the number of engaging grooves may be increased or other shapes (for example, A cover plate 29 (having long legs) may be used.

[Effect of device]

As described above, the present invention is provided with a handle protruding upward and downward on one surface of the body, and the switch mechanism portion inside the body is opened at a position where the handle protrudes substantially orthogonal to the one surface of the body. However, in the switch for the distribution board in which the switch mechanism section closes the pole at a position where the handle is substantially parallel to the one surface of the body, the handle is covered by the handle when the switch mechanism section of the one surface of the body is closed. The terminals are arranged so as to be exposed at the part, and when the switch mechanism is closed, part of the terminals exposed from the body is covered with the handle,
Since the wiring work cannot be performed during energization, there is an advantage that safety is secured without increasing the number of parts.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention with a cover removed, in which FIG. 1 (a) is in an on state, FIG. 1 (b) is in an off state, and FIG.
FIG. 3 is an exploded perspective view of the same as above, FIG. 3 is a front view of a distribution board using the same as above, and FIG. 4 is a side view with a cover removed showing another embodiment of the present invention. ON state, FIG. 5B is an OFF state, FIG. 5 is a side view showing a conventional example with a cover removed, FIG. 5A shows an ON state, and FIG. 5B shows an OFF state. . 1 ... Body, 3 ... Handle, 4 ... Movable contact, 5 ...
… Terminal.

Claims (1)

[Scope of utility model registration request] 1. A handle provided on one surface of a body so as to be able to rise and fall, and a switch mechanism portion inside the body is opened at a position where the handle projects substantially orthogonal to the one surface of the body, and a handle is provided. In a switch for a distribution board in which the switch mechanism is closed at a position that is substantially parallel to the one side of the body, exposed on the part of the one side of the body covered by the handle when the switch mechanism is closed. Switch for distribution board, which has terminals arranged in the form of