JPH09180573A - Switch with indicating lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct mass production by conducting automatic assembly. SOLUTION: A current detection element containing recessed portion 21, terminal plate containing recessed portions 22, 23, and a contact portion containing portion 24 are recessing provided in the body 2 of a housing 1. Terminal plates 4, 5 and an opening and closing body 7 for exchanging contacts are inserted into the plural terminal plate containing recessed portion 22, 23 and the contact portion containing recessed portion 24 from above, and simultaneously a current detection element block A is inserted into the current detection element containing recessed portion 21 from above. An indicating block 18 having an indicating lamp is mounted on the current detection element block A from above. A handle 13 rocking the opening and closing body 7 is mounted on the indicating block 18. The cover 3 of the housing 1 is fitted onto the body 2 thereover. Thereby, respective components are incorporated in order from above and assembled so that the components are successively automatically incorporated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch with an indicator light, which is used in an AC circuit and has an indicator light which is turned on when energized.

[0002]

2. Description of the Related Art In recent years, various types of switches with an indicator lamp have been provided which illuminate an indicator lamp to indicate energization when a current flows through an alternating current circuit. These switches are provided in a housing consisting of a body and a cover. The current situation is that parts are manually assembled and each part is manually connected.

[0003]

However, if it is manually assembled as described above, the productivity is poor and mass production is impossible. The present invention has been made in view of the above points, and an object thereof is to enable automatic assembly and mass production.

[0004]

In order to solve the above problems, a switch with an indicator lamp according to the present invention is connected to a contact inserted in an AC circuit so that an AC current flows through the primary side when the AC circuit is energized. In a switch with an indicator lamp, which is provided with a current detecting element and an indicator lamp which is connected to the secondary side of the current detecting element and is turned on when an AC circuit is energized, the indicator lamp is located in a handle for switching contacts, A current detection element storage recess, a terminal plate storage recess, and a contact portion storage recess are provided in the body of, and a terminal plate and an opening / closing body for contact replacement are inserted into the terminal plate storage recess and the contact portion storage recess from above. At the same time, the current detecting element block having the current detecting element is inserted into the current detecting element housing recess from above, and the display block having the indicator lamp is mounted on the current detecting element block from above to shake the opening / closing body. Mounted on the handle of display blocks to be further cover of the housing from above is characterized in that it is fitted to the body. With this configuration, it is possible to assemble and assemble the respective parts in order from above, and the parts can be sequentially and automatically assembled, and it is possible to improve productivity by enabling automatic assembly.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an example shown in FIGS. 1 to 4 will be described. The housing 1 is composed of a body 2 and a cover 3. Inside the body 2, a current detection element housing recess 21, terminal plate housing recesses 22 and 23, and a contact portion housing recess 24 are provided. The terminal board 4 is housed in the terminal board housing recess 22, the terminal board 5 is housed in the terminal board housing recess 23, and the connection board 6 is housed in the contact portion housing recess 24. Terminal board 4, 5
A lock spring 11 is internally provided, and the terminal plates 4 and 5 and the lock spring 11 constitute a quick-connect terminal so that the electric wire inserted through the electric wire insertion hole can be quickly connected. Terminal board 4,
A release button 12 is provided in the interior of the device 5. By inserting a driver or the like through the release hole, the release button 12 can be operated to release the connection of the lock spring 11 and the electric wire can be pulled out. . A fulcrum protrusion 27 is provided on the lower portion of the connection plate 6, and the opening / closing body 7 is swingably mounted on the fulcrum protrusion 27. A movable contact 28 is provided above the opening / closing body 7, and the movable contact 28 exchanges the fixed contact of the terminal plate 5 with the rotation of the opening / closing body 7.

The current transformer 8 as an example of the current detecting element is adapted to generate an output current in the secondary winding when an alternating current flows in the primary winding. The current transformer 8 is housed in a case 17 composed of a case body 17a and a lid 17b to form a current detection element block A. The lead terminal 30 on the primary side of the current transformer 8 and the lead terminal 19 on the secondary side of the current transformer 8 are projected from the upper surface of the case 17. The lead terminals 19 and 30 are rigid conductors and have, for example, a pin shape. The current detecting element block A including the current transformer 8 and the case 17 is housed in the current detecting element housing recess 21. The continuous piece 31 extends from the upper end of the terminal board 4 to the vicinity of the lead terminal 30.
And the joining hole 32 is bored at the tip of the consecutive piece 31. Then, one of the pair of lead terminals 30 is inserted into the joint hole 32 and connected.
The continuous piece 33 is also continuous from the upper end of the connecting plate 6 to the vicinity of the lead terminal 30, and a joint hole 34 is formed at the tip of the continuous piece 33. And the other lead terminal 30
Are connected to the joint hole 34. That is, after the current detection element block A is assembled, the terminal plate 4 and the connection plate 6 are assembled from above, so that the lead terminal 30 has the bonding holes 32, 3.
4 and the lead terminal 30 is connected to the terminal plate 4 and the connection plate 6 by automatic soldering.

The display block 18 is a base 35 made of resin.
LED chip 36 that becomes a light by inserting a conductor into
A resistance chip 37 serving as a protective resistance is mounted, and the LED chip 36 and the resistance chip 37 are connected to a conductor. The LED chip 36 is mounted on the upper end of a projecting portion 38 provided on the base 35 so as to project upward. On the base 35 of the display block 18, an arc avoiding unit 65 is integrally provided on the resistor chip 37 so as to prevent the arc from flying during contact replacement. The display block 18 is mounted and mounted on the upper end of the body 2 from above the current detection element block A. When the display block 18 is attached, the joint holes 3 of the pair of terminals 20 of the pair of conductors of the display block 18
9 and the pair of secondary side lead terminals 19 correspond to each other, and the lead terminals 19 are inserted into the joint holes 39 and connected by automatic soldering.

The cover 3 is formed by providing a rectangular opening 40 on the upper surface, and the cover 3 is attached to the upper surface opening of the body 2. With the cover 3 attached to the body 2, the assembly frame 41 is fitted from the cover 3 side to the body 2, and the cover 3 and the body 2 are integrated by the assembly frame 41. Handle 1 for switching contacts in cover 3
3, a seesaw is freely movable, and an upper surface of a handle 13 for switching contacts is exposed from an opening 40 of the cover 3. A cylindrical portion is integrally provided in the contact switching handle 13, and one end of the coil spring 14 is inserted into the contact switching handle 13 cylindrical portion.
The other end of the coil spring 14 is inserted into the opening / closing body 7. Therefore, when the contact switching handle 13 is moved in a seesaw manner, the opening / closing body 7 reversely swings via the coil spring 14, and the movable contact 28 and the fixed contact come into contact with or separate from each other. The protruding portion 38 of the display block 18 is inserted into the contact switching handle 13, and the LED is passed through the window portion 43 provided on the upper surface of the contact switching handle 13.
The chip 36 is exposed. A lamp cover 44 is detachably attached to the window portion 43 by fitting. A transparent card cover 45 is detachably fitted on the contact switching handle 13 so that a card such as a name card can be held between the contact switching handle 13 and the card cover 45. It has become.

The switch with an indicator light is formed as described above, and the open / close body 7 is inverted and oscillated by the seesaw movement of the handle 13 for switching the contact, so that the contact between the movable contact 28 and the fixed contact can be exchanged. When the movable contact 28 and the fixed contact are brought into contact with each other to bring the AC circuit into conduction, electromotive force generated in the secondary winding of the current transformer 8 as a current detection element is applied to the LED chip 36 to cause the LED chip 36 to emit light. Is displayed and it is turned on.

Further, the outer shape of the switch with an indicator light constructed as described above is equivalent to one embedded wiring device which can be detachably attached to a mounting frame standardized by the Japan Wiring Equipment Manufacturers Association. The mounting claw 46, which is set to a size that serves as a mounting portion to a mounting frame made of synthetic resin,
Then, a mounting hole 47 serving as a mounting portion to the mounting frame made of metal is formed in the assembly frame 41.

Further, as shown in FIG. 2, the display block 18 has a mounting leg 48 at a proper position on the end portion thereof.
The mounting foot 48 is fitted into the positioning recess 49 of the body 1 when the is mounted on the body 2. When the cover 3 is fitted, the positioning recess of the cover 3 is fitted into the mounting foot 48, and the mounting foot 48 is sandwiched between the cover 3 and the body 2 to mount the display block 18. In this way, the display block 18 is attached to a predetermined position by being sandwiched between the cover 3 and the body 2 regardless of the contact switching handle 13.

Further, in the display block 18, the LED chip 3
6 and the resistor chip 37 are connected by laser soldering. When the terminal board 4 and the connection board 6 are assembled, the lead terminals 30 on the primary side are connected to the connection holes 32, 3 of the terminal board 4 and the connection board 6.
4 is inserted and connected to the terminal plate 4 or the connection plate 6 and the lead terminal 30 by soldering with a laser. Further, when the display block 18 is incorporated, the lead terminal 19 on the secondary side of the current transformer 8 is inserted into the joint hole 39 of the terminal 20, and the terminal 20 and the lead terminal 19 can be connected by soldering with a laser. In this way, it is possible to perform automatic assembly by positioning at a predetermined fixed position and soldering with a laser.

The display block 18 has two LED chips 36 and one resistor chip 37 mounted thereon. FIG.
2, the two LED chips 36 are connected in parallel, and the LED chip 36 and the resistor chip 37 are connected in series. In FIG. 4, reference numeral e is the primary side of the current transformer 8, f
Is a secondary side of the current transformer 8, and SW is a switch portion that is switched by swinging the opening / closing body 7. By the way, in the conventional current transformer 8, the primary side is 4 A and the secondary side is about 30 mA, and the current value on the secondary side is high and the LED chip 36
Is causing the breakdown. In the present invention, by inserting the resistor chip 37 as a protective resistor, the output on the secondary side is reduced to 25
can be regulated to mA or less, prevent the LED chip 36 from being damaged,
Life can be extended.

The switch with an indicator light configured as described above is automatically assembled, and the current detecting element block A is inserted into the current detecting element storing recess 21 of the body 2 from above to store the terminal plate of the body 2. The terminal plate 4 and the terminal plate 5 are inserted into the recesses 22 and 23 from above together with the release button 12 and the lock spring 11, the opening / closing body 7 is inserted into the contact portion housing recess 24 from above, and the display block 18 is It is mounted on the body 2 from above on the current detecting element block A, and the handle 1 together with the coil spring 14 from above the display block 18.
3 is mounted, the cover 3 is covered on the handle 13, and the assembly frame 41 is mounted on the cover 3 to be attached. As a result, the parts can be sequentially assembled from above and assembled, and the assembly can be easily automated.

Next, the example shown in FIGS. 5 to 8 will be described. This example is also basically the same as the above example, but only the structure of the current detection element block A is different. The current detection element block A is formed of the current detection diode body 60 in this example. The current detecting diode body 60 is assembled by mounting a diode bridge chip 62 and a diode chip 63 on a base 61 into which a conductive circuit is inserted. That is, a circuit in which the diode 63a is installed at the midpoint of the diode bridge 62a as shown in FIG. 8 is formed. The current detecting diode body 60 may be formed by connecting five diode chips to a circuit as shown in FIG. The current detection diode body 60 has lead terminals 19 and 30 projecting upward from a base 61. The lead terminals 19 and 30 are rigid conductors and have, for example, a pin shape. This current detection diode body 6
0 is inserted into the current detection element storage recess 21 from above and is stored. By electrically connecting the display block 18 to the current detection diode body 60, a current detection display circuit as shown in FIG. 8 is formed. Also, resistor chip 3
7 is mounted on the base 35, but in the case of a specification in which two resistance chips 37 are connected in series, the base 3 of the display block 18
One resistance chip 37 is mounted on the No. 5 and one resistance chip 37 is mounted on the base 61 of the current detecting diode body 60. In this switch with indicator light, the open / close body 7 is reversed by moving the handle 13 in a seesaw motion, and the movable contact 28
And the fixed contact are brought into contact with each other to make the AC circuit conductive,
The LED chip 36 is energized to display light.

FIG. 9 shows another example of the current detecting element block A. The base 61 of the current detection diode body 60 is integrally provided on the case body 17a of the case 17, and the lead terminal 1 is provided above the upper surface of the case body 17a.
9 and 30 are projected. Then, the diode bridge chip 62 and the diode chip 63 are provided in the case body 17a.
The resistor chip 37 is mounted so as to be embedded therein, and the opening of the case body 17a is closed by the lid 17b.

[0017]

As described above, according to the present invention, a current detecting element accommodating recess, a terminal plate accommodating recess and a contact part accommodating recess are provided in the housing body, and a plurality of terminal plate accommodating recesses and contact part accommodating recesses are provided with terminals. A plate or contact opening / closing body for contact replacement is inserted from above, and a current detection element block having a current detection element is inserted from above into the current detection element housing recess, and a display block having an indicator lamp is inserted from above. Since the handle mounted on the top and the swinging body is mounted on the display block, and the cover of the housing is fitted on the body from above, it is possible to assemble and assemble each part in order from the top. The parts can be automatically and sequentially incorporated, and the automatic assembly can be performed to improve productivity and mass production.

In the invention of claim 4 of the present invention,
Since the resistance chip serving as the protection resistance of the LED chip as the indicator light is mounted on the base of the display block and the LED chip and the resistance chip are connected in series, the resistance chip for protecting the LED chip can be easily mounted. It is a thing. Further, in the invention according to claim 5 of the present invention, since one diode bridge chip and one diode chip are mounted on the substrate and they are electrically connected to form the diode body for current detection, The diode body for current detection can be easily assembled using a commercially available diode bridge chip and a diode chip.

Further, in the invention according to claim 7 of the present invention, since the lead terminal is provided so as to project above the current detecting element block and the lead terminal is inserted and connected to the terminal of the display block, the lead is provided. The terminals can be easily connected to further automate the assembly. Further, in the invention according to claim 8 of the present invention, a resistance chip as a protective resistance is mounted on the substrate of the display block, and the arc avoidance for avoiding the arc when the contact is exchanged reaches the resistance chip portion is provided on the substrate. Since it is provided, the resistance chip can be protected from the arc when the contacts are replaced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an example of a switch with an indicator lamp of the present invention.

FIG. 2A is a perspective view in which a display block of the same is enlarged, and FIG. 2B is a perspective view showing a state in which the display block is attached.

3A and 3B show the same current detection element block, FIG. 3A is an exploded perspective view, and FIG. 3B is an assembled perspective view.

FIG. 4 is a circuit diagram of the above switch with an indicator lamp.

FIG. 5 is an exploded perspective view of another example of the above switch with an indicator light.

FIG. 6 is an exploded perspective view showing an enlarged main part of the above.

7A and 7B show the same current detection element block, FIG. 7A is a perspective view of a base, and FIG. 7B is a perspective view of a state where a chip is attached.

FIG. 8 is a circuit diagram of the switch with an indicator lamp of the above.

FIG. 9 shows another example of the above current detection element block,
(A) is an exploded perspective view, (b) is an assembled perspective view.

[Explanation of symbols]

 1 Housing 2 Body 3 Cover 4 Terminal Board 5 Terminal Board 6 Connection Board 7 Opening / Closing Body 8 Current Transformer 13 Handle 17 Case 17a Case Main Body 17b Lid 18 Display Block 19 Lead Terminal 20 Terminal 21 Current Detection Element Storage Recess 22 Recess for Terminal Plate 23 Terminal plate housing recess 24 Contact part housing recess 30 Lead terminal 35 Base 36 LED chip 37 Resistor chip 65 Arc avoidance A Current detection element block

Claims (10)

[Claims] 1. A contact inserted into an AC circuit, a current detection element connected so that an AC current flows through the primary side when the AC circuit is energized, and a secondary side of the current detection element connected to the AC circuit. In the switch with an indicator lamp, which has a indicator lamp that lights up when the power is turned on, and the indicator lamp is located in the handle for switching contacts, the housing of the current detection element, the terminal plate, and the contact portion are stored in the housing body. A current detecting element block having a concave portion, a terminal plate and a contact portion accommodating concave portion into which a terminal plate and an opening / closing member for contact exchange are inserted from above and a current detecting element in the current detecting element accommodating concave portion. Is inserted from above, the display block having the indicator lamp is mounted on the current detecting element block from above, the handle for swinging the opening / closing body is mounted on the display block, and the handle from above is mounted. A switch with an indicator light, in which the housing cover is fitted on the body. 2. The switch with an indicator light according to claim 1, wherein a diode body for current detection comprising a diode bridge and a diode installed between the middle points of the diode bridge is used as the current detection element. 3. The switch with an indicator lamp according to claim 1, wherein a current transformer is used as the current detecting element. 4. A resistance chip serving as a protective resistance of an LED chip as a display lamp is mounted on a base of a display block, and the LED chip and the resistance chip are connected in series. Claim 2 or Claim 3
Switch with indicator light shown. 5. The display according to claim 2, wherein one diode bridge chip and one diode chip are mounted on a base and are electrically connected to each other to form a diode body for current detection. Lighted switch. 6. The switch with an indicator lamp according to claim 2, wherein five diode chips are mounted on a substrate and are electrically connected to each other to form a diode body for current detection. 7. The switch with an indicator lamp according to claim 1, wherein a lead terminal is provided so as to project upward from the current detection element block, and the lead terminal is inserted into and connected to the terminal of the display block. 8. The display block substrate is provided with a resistance chip as a protection resistor, and the substrate is provided with arc avoidance for avoiding an arc when a contact is exchanged to reach the resistance chip portion. Switch with indicator light described in 1. 9. The switch with an indicator lamp according to claim 2, wherein a current detection diode body is housed in a case to form a current detection block. 10. The switch with indicator light according to claim 3, wherein the current detecting element block is formed by incorporating a current transformer in the case.