JP3689136B2 - Switch with indicator light - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a switch with an indicator lamp that is used in an AC circuit and includes an indicator lamp that is turned on when energized.
[0002]
[Prior art]
Conventional switches with indicator lights are configured as shown in FIGS . The housing 1 includes a body 2 and a cover 3, and terminal plates 4 and 5, a connection plate 6, an opening / closing body 7, a current transformer 8, and the like are provided inside the body 2. A lock spring 11 and a release button 12 are provided in a portion in which the terminal plates 4 and 5 are accommodated. The Siegel wire 9 on the primary side of the current transformer 8 is connected to the terminal plate 4 and the connection plate 6 by soldering, and the Siegel wire 10 on the secondary side of the current transformer 8 is extended continuously. A contact switching handle 13 is swingably mounted on the cover 3. By swinging the contact switching handle 13, the opening / closing body 7 is swung via a coil spring 14 to connect the connection plate 6 and the terminal plate. 5 is opened and closed. A mounting plate 15 is mounted on the lower surface side of the contact switching handle 13. An indicator lamp 16 sealed with an LED is attached to the mounting plate 15, and the secondary side Siegel wire 10 is connected to the terminal of the indicator lamp 16. The ends are connected by soldering.
[0003]
[Problems to be solved by the invention]
However, in the above conventional example, the current transformer 8 is built in the body 2 side, the indicator lamp 16 side is mounted on the contact switching handle 13 side, and the Siegel wire 10 connects between them. In addition, there is a problem that automatic assembly is difficult because positioning cannot be performed at the time of connection because the structure is connected using the soft Siegel wire 10, and the Siegel wire 10 moves according to the operation of the contact switching handle 13. There was also a risk of disconnection.
[0004]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a switch with an indicator lamp that can easily position a connecting portion, can be automatically assembled, and has no risk of disconnection. To provide.
[0005]
[Means for Solving the Problems]
To achieve the above object, the switch with indicator light of the present invention includes a contact inserted into an AC circuit, a current transformer 8 connected so that an AC current flows to the primary side when the AC circuit is energized, In the switch with indicator lamp, which is connected to the secondary side and is lit when the AC circuit is energized, is located in the handle 13 for switching contacts, the current transformer 8 is housed in the transformer housing case 17 and the current transformer 8 is housed in the body 2 of the housing 1 with the housing case 17, a display block 18 having a display lamp arranged between the body 2 and the cover 3 of the housing 1, the foot 48 attached to an end portion of the display block 18 When the display block 18 is placed on the body 2, the attachment leg 48 is fitted in the positioning recess 49 of the body 2 and the cover 3 is fitted. When fitted to the foot 48 fitted with a positioning recess 50 of the cover 3, the mounting display block 18 by clamping the mounting legs 48 in the body 2 and the cover 3, the lead terminals 19 of the secondary side of the current transformer 8 transformer housing The lead terminal 19 is connected to the terminal 20 of the display block 18 while projecting from the case 17, and the indicator lamp of the display block 18 is positioned in the contact switching handle 13.
[0006]
[Action]
According to the above configuration, the display block 18 is disposed between the body 2 and the cover 3 of the housing 1 , the mounting block 48 is provided at the end of the display block 18, and the display block 18 is placed on the body 2. When the mounting foot 48 is fitted into the positioning recess 49 of the body 2 and the cover 3 is fitted, the positioning recess 50 of the cover 3 is fitted into the mounting foot 48, and the body 2 and the cover 3 are attached to the mounting foot 48. The structure is such that the display block 18 is attached while being sandwiched, and the lead terminal 19 protruding from the transformer housing case 17 housing the current transformer 8 is connected to the terminal 20 of the display block 18. Can be easily positioned and connected, and automatic assembly can be performed. In addition, the display block 18 is fixed with the mounting foot 48 sandwiched between the body 2 and the cover 3 regardless of the contact switching handle 13, and is not affected by the movement of the contact switching handle 13, and may be broken. There is no.
[0007]
【Example】
First, the overall structure of the switch with indicator light will be described with reference to FIGS.
[0008]
The housing 1 includes a body 2 and a cover 3, and a transformer housing recess 21, terminal plate housing recesses 22 and 23, and a contact portion housing recess 24 are provided in the body 2. The terminal plate 4 is stored in the terminal plate storage recess 22, the terminal plate 5 is stored in the terminal plate storage recess 23, and the connection plate 6 is stored in the contact portion storage recess 24. A lock spring 11 is housed inside the terminal plates 4 and 5, and the terminal plates 4 and 5 and the lock spring 11 constitute a quick connection terminal so that the electric wire inserted from the electric wire insertion hole 25 can be quickly connected. It has become. A release button 12 is provided in the terminal plates 4 and 5, and the lock button 11 can be released by operating the release button 12 by inserting a screwdriver or the like through the release hole 26, and the electric wire can be removed. It is like that. A fulcrum protrusion 27 projects from the lower part 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 on the upper part of the opening / closing body 7, and the movable contact 28 exchanges the contact with the fixed contact 29 of the terminal plate 5 by the rotation of the opening / closing body 7.
[0009]
The current transformer 8 generates an output current in the secondary winding when an alternating current flows in the primary winding. The current transformer 8 is housed in a transformer housing case 17 composed of a case body 17a and a lid body 17b. 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 protruded from the upper surface of the transformer housing case 17. The lead terminals 19 and 30 are rigid conductors having, for example, a pin shape. The current transformer 8 is housed in the transformer housing recess 21 together with the transformer housing case 17. A continuous piece 31 is extended from the upper end of the terminal plate 4 to the vicinity of the lead terminal 30, and a joint hole 32 is drilled at the tip of the continuous piece 31. One of the pair of lead terminals 30 is inserted into the joint hole 32 and connected. A continuous piece 33 is continuously extended from the upper end of the connection 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. The other lead terminal 30 is connected to the joint hole 34. In other words, after the current transformer 8 is assembled, the terminal plate 4 and the connection plate 6 are assembled from above, so that the lead terminal 30 is inserted into the joint holes 32 and 34 and the lead terminal 30 is connected to the terminal plate 4 and the connection plate 6. Is done.
[0010]
The display block 18 is formed by inserting a conductor into a base 35 made of resin, mounting an LED chip 36 serving as an indicator lamp and a resistor chip 37 serving as a protective resistor, and connecting the LED chip 36 or resistor chip 37 to the conductor. ing. The LED chip 36 is mounted on the upper end of a protruding portion 38 provided to protrude upward on the base 35. The display block 18 is mounted and attached to the upper end of the body 2 from above the current transformer 8. When the display block 18 is attached, the joint hole 39 of the pair of terminals 20 of the pair of conductors of the display block 18 and the pair of secondary lead terminals 19 correspond to each other, and the lead terminal 19 is inserted into the joint hole 39 and connected. Is done.
[0011]
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, an 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. A contact switching handle 13 is housed in the cover 3 so as to allow seesaw movement. The upper surface of the contact switching handle 13 is exposed from the opening 40 of the cover 3. A cylindrical portion 42 is integrally provided in the contact switching handle 13, one end of the coil spring 14 is inserted into the cylindrical portion 42 of the contact switching handle 13, and the other end of the coil spring 14 is opened and closed. It is inserted into the body 7. Accordingly, when the contact switching handle 13 is moved in a seesaw manner, the opening / closing body 7 is reversed and oscillated via the coil spring 14, and the movable contact 28 and the fixed contact 29 are brought into contact with or separated from each other. The protrusion 38 of the display block 18 is inserted into the contact switching handle 13, and the LED chip 36 is exposed from the window 43 provided on the upper surface of the contact switching handle 13. A lamp cover 44 is detachably attached to the window 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. ing.
[0012]
As described above, a switch with an indicator lamp is formed, and the contact switching handle 13 can be operated as a seesaw to reversely swing the opening / closing body 7 so that the movable contact 28 and the fixed contact 29 can be exchanged. And the fixed contact 17 are brought into contact with each other to make the AC circuit conductive, an electromotive force generated in the secondary winding of the current transformer 8 is energized to the LED chip 36 and is turned on by light emission of the LED chip 36. Is displayed.
[0013]
In addition, the external shape of the switch with indicator light configured as described above is a size corresponding to one of the embedded type wiring equipment that can be detachably attached to the mounting frame standardized by the Japan Wiring Equipment Manufacturers Association. The assembly frame 41 is formed with an attachment claw 46 that is set and is an attachment portion to the attachment frame made of synthetic resin, and an attachment hole 47 that is an attachment portion to the metal attachment frame.
[0014]
Next, the main part of the switch with indicator light of the present invention will be described.
[0015]
The first main part will be described with reference to FIGS. The display block 18 has a mounting foot 48 at an appropriate position on the end, and when the display block 18 is placed on the body 2, the mounting foot 48 is fitted into the positioning recess 49 of the body 2 . When the cover 3 is fitted, the positioning recess 50 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 attach the display block 18. In this way, the display block 18 is sandwiched between the cover 3 and the body 2 regardless of the contact switching handle 13 and attached at a predetermined position. When the display block 18 is mounted on the upper surface of the body 2, the secondary lead terminal 19 projecting from the transformer housing case 17 housing the current transformer 8 is inserted into the joint hole 39 of the terminal 20, and the lead terminal 19 and the terminal are connected. 20 is connected by soldering. At this time, the connecting portion can be easily positioned and soldered to enable automatic assembly.
[0016]
The second main part will be described with reference to FIGS. In the display block 18, the LED chip 36 and the resistor chip 37 are connected by laser soldering. Here, symbol a is a soldered portion of the LED chip 36 to the conductor, and symbol b is a soldered portion of the resistor chip 36 to the conductor. When the terminal plate 4 and the connection plate 6 are assembled, the lead terminals 30 on the primary side are inserted into the joint holes 32 and 34 of the terminal plate 4 and the connection plate 6, and are connected to the terminal plate 4 and the connection plate 6 by soldering with a laser. A lead terminal 30 is connected. Reference numeral c denotes a soldering portion of the lead terminal 30. When the display block 18 is assembled, the secondary lead terminal 19 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. Reference numeral d denotes a soldered portion of the lead terminal 19. In this manner, the connecting portion can be positioned at a predetermined position and automatically assembled by laser soldering. Conventionally, since the Siegel wire etc. is connected, it cannot be positioned and soldered manually, which makes the work complicated and takes time, but in the case of the present invention, it can be done automatically and the work is simplified and the laser is used. Time is reduced for soldering.
[0017]
The third main part will be described with reference to FIGS. Two LED chips 36 and one resistor chip 37 are mounted on the display block 18. As shown in FIG. 9, 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. 9, symbol e is the primary side of the current transformer 8, f is the secondary side of the current transformer 8, and SW is a switch unit that is switched by swinging of 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, causing a failure of the LED chip 36. In the present invention, by inserting the resistor chip 37 as a protective resistor, the output on the secondary side can be regulated to 25 mA or less, the failure of the LED chip 36 can be prevented, and the life can be extended.
[0018]
The fourth main part will be described with reference to FIGS. A transformer storage case 17 for storing the current transformer 8 is formed by a case main body 17a and a lid body 17b, and a lower portion of the case main body 17a and a lower portion of the lid body 17b are connected by a hinge portion 51. Is openable and closable with respect to the case body 17a. Then, the current transformer 8 is put in the case main body 17b, and the current transformer 8 is housed in the transformer housing case 17 by turning the hinge body 51 and attaching the lid body 17b. In this way, the current transformer 8 can be housed in the transformer housing case 17 and assembled with one touch. When the lid body 17b is attached, the positioning pin 52 of the lid body 17b is fitted into the positioning hole 53 of the case body 17a to be positioned and coupled. Further, the fitting piece 54 provided on the lid body 17b is fitted and coupled to the fitting recess 55 of the case body 17a.
[0019]
The fifth essential part will be described with reference to FIG. The contact switching handle 13 is provided with a window 43 so that the LED chip 36 is exposed, and a lamp cover 44 is fitted and attached to the window 43 to protect the LED chip 36 from above. The fitting legs 56 are suspended from the lamp cover 44, and the fitting legs 56 can be fitted and attached. In the case of the conventional indicator lamp, only the window portion is required because of the structure in which the LED chip is protected by the cover, but in the case of the present invention, the LED chip 36 is protected by the lamp cover 44 because of the structure in which the LED chip 36 is exposed. . Even if the lamp cover 44 is attached, the lamp cover 44 can be fitted from above so that it can be automatically assembled. The lamp cover 44 may be colored in a color such as red.
[0020]
【The invention's effect】
As described above, the present invention has a display block having an indicator lamp disposed between the body of the housing and the cover, has an attachment foot at the end of the display block, and is attached when the display block is placed on the body. When fitting the foot into the positioning recess of the body and fitting the cover, the positioning recess of the cover is fitted into the mounting foot, and the display block is attached by holding the mounting foot between the body and the cover, and the secondary of the current transformer The lead terminal on the side protrudes from the transformer storage case, and the lead terminal is connected to the terminal of the display block, and the indicator light of the display block is located in the contact switching handle. None are those can automatic assembly connection portion can connect easily positioned and also display block and the contact switching handle relations Without being it is to be affected by the movement of the mounting handle for fixed with contact switching by holding the foot between the body and the cover, is that there is no fear of disconnection.
[0021]
According to the second aspect of the present invention, a terminal plate, a connection plate, a current transformer, and the like are housed in the body of the housing, and a primary lead terminal of the current transformer projects from the transformer housing case. This lead terminal is connected to the terminal plate or connecting plate by soldering with a laser, the lead terminal on the secondary side of the current transformer is projected from the transformer housing case, and this lead terminal is soldered to the terminal of the display block by laser Since the LED chip as an indicator lamp is mounted on the base of the display block and the LED chip is connected to the base by soldering with a laser, the connecting portion can be positioned and joined by soldering Thus, the assembly can be automated and the soldering time can be shortened by laser soldering.
[0022]
In the invention according to claim 3 of the present invention, since the resistance chip is inserted as a protective resistor in the circuit connected to the LED chip as the indicator lamp, the output current value for energizing the LED chip can be lowered. Thus, the failure of the LED chip can be prevented and the lifetime can be extended.
[0023]
In the invention according to claim 4 of the present invention, the transformer storage case is composed of a case main body and a lid, and the case main body and the lid are connected by a hinge. It is possible to automate the assembly by one-touch storage and assembly, and the lead terminal on the secondary side of the current transformer protrudes from the transformer storage case and the terminal of the display block and the lead terminal are directly connected Since it is connected, the positioning of the lead terminal and the terminal of the display block can be easily performed and can be connected by automatic assembly.
[0024]
In the invention according to claim 5 of the present invention, an LED chip is used as an indicator lamp, a window portion is provided at a position corresponding to the LED chip of the contact switching handle, and a lamp cover is fitted to the window portion. Since it is attached, the LED chip can be protected by attaching the lamp cover, and it can be attached simply by fitting the lamp cover from above and can be automatically assembled.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a cover, a display block, and a body according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the main part in the assembled state of the above.
3A is a cross-sectional view as viewed from the front, and FIG. 3B is a cross-sectional view broken away at a position different from FIG. 3A.
4A is a plan view with the cover removed, and FIG. 4B is a plan view with the display block of FIG. 4A removed.
FIG. 5 is an overall exploded perspective view of the same.
FIG. 6 is an exploded plan view with the display block removed.
7 is a plan view of a state in which the display block of FIG. 6 is attached.
FIG. 8 is a plan view of the same display block.
FIG. 9 is an overall circuit diagram of the above.
FIG. 10 is an exploded perspective view of the current transformer and the transformer storage case.
FIG. 11 is a perspective view showing a state where the current transformer is housed in a transformer housing case.
FIG. 12 is an exploded perspective view showing the contact switching handle and the lamp cover.
FIG. 13 is a cross-sectional view of a conventional example viewed from the front.
FIG. 14 is an exploded perspective view of a main part of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 2 Body 3 Cover 4 Terminal board 5 Terminal board 6 Connection board 7 Opening and closing body 8 Current transformer 11 Locking spring 12 Release button 13 Contact switching handle 17 Transformer storage case 17a Case main body 17b Cover 18 Display block 19 Lead terminal 20 Terminal 21 Transformer storage recess 22 Terminal plate storage recess 23 Terminal plate storage recess 24 Contact portion storage recess 30 Lead terminal 35 Base 36 LED chip 37 Resistance chip 44 Lamp cover 51 Hinge section

Claims (5)

Contacts inserted into the AC circuit, a current transformer connected so that AC current flows to the primary side when the AC circuit is energized, and an indicator lamp that is connected to the secondary side of the current transformer and lights when the AC circuit is energized In the switch with indicator light, which is positioned in the contact switching handle, the current transformer is housed in the transformer housing case and the current transformer is housed in the body of the housing together with the transformer housing case. It is placed between the body of the housing and the cover and has mounting feet at the end of the display block. When the display block is placed on the body, the mounting foot is fitted into the positioning recess of the body and the cover is covered. Fit the positioning recess of the cover to the mounting foot when fitting, and attach the display block by holding the mounting foot between the body and the cover Connect the lead terminal of the secondary side of the current transformer to the terminals of the display blocks lead terminals as to protrude from the transformer housing case, characterized by comprising a display light of the display block is positioned in contact for switching the handle Switch with indicator light. The terminal board, connection board, current transformer, etc. are housed in the body of the housing, and the lead terminal on the primary side of the current transformer protrudes from the transformer housing case, and this lead terminal and the terminal board or connection board are soldered by laser. The lead terminal on the secondary side of the current transformer protrudes from the transformer housing case, and this lead terminal is connected to the terminal of the display block by soldering with a laser, and the LED chip as an indicator lamp is displayed on the display block 2. The switch with indicator light according to claim 1, wherein the LED chip is mounted on the base and connected to the base by soldering with a laser. 3. A switch with an indicator lamp according to claim 1, wherein a resistor chip is inserted as a protective resistor into a circuit connected to the LED chip as an indicator lamp. The transformer storage case is composed of a case main body and a lid body, the case main body and the lid body are connected by a hinge, and a lead terminal on the secondary side of the current transformer protrudes from the transformer storage case and the terminal of the display block 4. A switch with an indicator lamp according to claim 1, wherein the switch is directly connected to the lead terminal. The LED chip is used as an indicator lamp, a window portion is provided at a position corresponding to the LED chip of the contact switching handle, and a lamp cover is attached to the window portion by fitting. The switch with an indicator light according to claim 2 or claim 3 or claim 4 .

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