JP5454774B2 - Wiring equipment - Google Patents

Description

  The present invention relates to a wiring device having a switch module having a size of 2 modules or more.

  Conventionally, for example, in a wiring apparatus used for indoor wiring at home, the load is automatically applied after a certain period of time after the turning-off operation or after an arbitrarily set time, such as lighting at the entrance, and ventilation fans such as toilets and baths. There are delay switches and timer switches that are turned off.

  Such a wiring device has a wiring device main body and a switch unit housed in the wiring device main body, and includes two circuits of a switch circuit that immediately turns on and off in response to an on / off operation and a delay circuit that delays off. In the case of the switch unit having the wiring unit, the wiring device main body often has a two-module size or a three-module size (see, for example, Patent Document 1).

  The wiring device body has a case with a front opening, and a cover attached to the front surface of the case, and on both sides, there are provided support attachment portions for attachment to a support that is a wiring device attachment frame. Locking portions for locking the case and the cover to each other in an attached state are provided on the upper and lower surfaces.

  The switch unit is housed between the case of the wiring fixture body and the cover, and can be operated from the front surface of the cover by fitting the handle from the inside of the cover and a spring between the handle and the handle. It has a switch mechanism that operates in reverse.

JP 7-105814 A (page 2-4, FIG. 1-5)

  However, in the case of a 2-module size or 3-module size wiring device, support mounting portions are provided on both side surfaces of the wiring device body, and the locking portions for locking the case and the cover in the mounted state are provided on the wiring device body. The center area of the cover that is not locked by the locking part is easily lifted from the case by being provided only on the lower surface and by pressing the handle and the cover through the handle with the switch mechanism spring. Become.

  When the central region of the cover is lifted in this way, there is a problem that the operation of the switch mechanism in which the handle is fitted to the cover is likely to become unstable. In order to solve this problem, the central area of the cover may be attached to the case with screws, but the number of parts increases by the amount of screws and the assembly man-hours also increase, reducing the assembly workability. There is a problem.

  The present invention has been made in view of such points, and an object of the present invention is to provide a wiring device that is easy to assemble and that can reliably prevent the central region of the cover from being lifted with respect to the case.

Wire device of claim 1, wherein the case having an open front, and attached to the front of the case, is formed into two or more modules size having a cover having an opening portion, a case and a cover on the lower surface in the mounted state A wiring fixture body provided with outer locking portions that lock each other, and provided with an inner locking portion that locks the case and the cover in an attached state at a position near the opening ; switch having housed between the cover, the handle from the inside of an operably cover from the front cover Ru fitted into the opening, and a switch mechanism operating in operation of the steering wheel by interposing a spring between the handle And a unit.

  The support standardized by JIS is configured so that three wiring units of a minimum unit can be attached and placed in a wiring box for one unit, and the minimum unit of wiring devices is called one module. The two-module size is a size in which two minimum units are connected together. The term “two module size or larger” means that a three module size in which three minimum units are integrally connected may be used.

  The case and the cover are made of an insulating synthetic resin. The support attachment portions on both side surfaces of the wiring device main body are for attachment to the support, and may be provided between one or both of the case and the cover.

  For example, the outer locking portion projects a claw portion on the upper and lower surfaces of the case, and attaches the upper and lower surfaces of the case to the upper and lower surfaces of the case and projects a projection piece hooked on the claw portion. The case and the cover may be locked to each other when combined with each other. However, the present invention is not limited to such a configuration. When the case and the cover are combined, the case and the cover are connected to each other. Any configuration may be used as long as it can be stopped.

  For example, the inner locking portion projects hooks from both the inside of the case and the inside of the cover, and when the case and the cover are combined, the hooks engage with each other to lock the case and the cover. However, the present invention is not limited to such a configuration, and any configuration can be used as long as the case and the cover can be locked together when the case and the cover are combined. Also good.

  In the switch unit, the switch mechanism operates by operating the handle. The switch mechanism may have, for example, two circuits of a switch circuit that turns on and off immediately in response to an on / off operation of the handle and a delay circuit that delays turning off. The spring is used to maintain the switching state of the handle and the switch mechanism.

  The wiring device according to claim 2 is the wiring device according to claim 1, wherein the inner locking portion is locked to the case hook in a state where the case is provided in the case and the cover is provided in the cover. And a positioning portion for positioning the locking between the case hook and the cover hook.

  For example, the positioning portion may be provided with positioning walls on both sides of the case hook to contact the both sides of the cover hook locked to the case hook to position the locking position. Any configuration may be used as long as the engagement between the case hook and the cover hook can be positioned.

  The wiring device according to claim 3 is the wiring device according to claim 2, wherein the switch unit includes a substrate on which a load control circuit is provided, and the case is provided on one side of the switch mechanism and the switch mechanism is disposed. It has a storage part and a substrate storage part that is provided on the other side of the inside and places the board. The case hook is arranged between the switch mechanism storage part and the substrate storage part inside the case, and the cover hook is locked. And the direction of the protruding direction of the claw portion is directed toward the substrate storage portion.

  Examples of the load control circuit include a delay circuit that delays turning off of the load.

  Although it does not specifically limit about a cover hook, Any structures, such as a nail | claw part mutually engaged with the nail | claw part of a case hook, and the hole part caught on the nail | claw part of a case hook, may be sufficient.

According to the wiring device according to claim 1, the outer locking portion that locks the case and the cover to each other in an attached state on the upper and lower surfaces of the wiring device body, even if the wiring device body is formed in two or more module sizes. In addition to providing the inner locking part, the inner locking part that locks the case and cover to each other in the attached state is provided in the vicinity of the opening , so when assembling the case and cover, The latching portion can be latched and the assemblability is good, and the inner latching portion can surely prevent the central region of the cover from being lifted with respect to the case.

  According to the wiring device according to claim 2, in addition to the effect of the wiring device according to claim 1, the inner locking portion has a case hook and a cover hook, and locks the case hook and the cover hook. Since the case hook and the cover hook are inside the case and the cover and are not visible from the outside when installed, the case hook and the cover hook can be easily positioned and locked because the positioning portion for positioning is provided. .

  According to the wiring device according to claim 3, in addition to the effect of the wiring device according to claim 2, when the direction in which the claw portion of the case hook protrudes is directed to the switch mechanism housing portion, the switch mechanism is housed. Because the case hook protrudes to the board storage part side because it is necessary to make a space for the cover hook to enter between the part side, but the direction in which the claw part of the case hook protrudes is directed to the board storage part side, The case hook can be arranged close to the switch mechanism storage portion, the space for the substrate storage portion is widened, the substrate can be easily mounted, and the assemblability can be improved.

It is a perspective view of the decomposition | disassembly state of the wiring appliance which shows one embodiment of this invention. It is sectional drawing of the assembly state of a wiring appliance same as the above. It is a perspective view of the case of a wiring instrument same as the above. It is a perspective view of the cover of a wiring instrument same as the above. It is a perspective view of the assembly state of a wiring device same as the above.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the figure, reference numeral 11 denotes a wiring device. The wiring device 11 includes a wiring device body 12 formed in a two-module size, and a switch unit 13 housed in the wiring device body 12.

  The wiring device main body 12 includes a case 16 having an open front surface and a cover 17 attached to the front surface of the case 16.

  The case 16 has a case main body 20 made of an insulating thermosetting resin and having an open front surface. A switch mechanism housing portion 21 is formed on the upper side, which is one side of the case main body 20. A substrate storage portion 22 is formed on the lower side which is the other side.

  On one side surface of the case 16, a support attaching portion 23 for attaching to a support which is a mounting frame for a wiring device is formed. The support mounting portion 23 has a protrusion 24 and a groove 25 formed on the front surface of the protrusion 24.

  Case outer locking portions 27 constituting the outer locking portions 26 are formed at four locations near both sides of the upper and lower surfaces of the case 16. In the case outer side locking portion 27, a locking claw 29 is projected from a recessed portion 28 that is recessed from the central region of the upper and lower surfaces of the case 16. With respect to the upper and lower surfaces of the case 16, the locking claw 29 is formed with an inclined surface on the front side and a substantially vertical surface on the rear side.

  Terminal storage portions 31 are formed vertically on both sides of the switch mechanism storage portion 21 of the case 16 via a release button storage portion 30, and the release button storage portion 30 and each terminal storage portion 31 have a back surface of the case 16. A release operation hole 32 and an electric wire insertion hole 33 are formed. A pair of movable piece storage portions 34 is formed in the central region between the terminal storage portions 31 on both sides of the switch mechanism storage portion 21.

  Substrate support ribs 35 are formed at two locations in the depth direction of the case 16 in the substrate storage portion 22 of the case 16.

  A case inner locking portion 37 constituting an inner locking portion 36 is formed between the switch mechanism storage portion 21 and the substrate storage portion 22 in the inner central region of the case 16. The case inner locking portion 37 has a case hook 38 that protrudes forward, and a claw portion 39 that protrudes toward the substrate storage portion 22 is formed on the lower surface of the front end of the case hook 38. The claw portion 39 has an inclined surface on the front side and a substantially vertical surface on the rear side with respect to the lower surface of the case hook 38. On both sides of the case hook 38, positioning portions 40 projecting on both sides of the case hook 38 on the claw portion 39 side are formed. The case hook 38 and the positioning part 40 constitute a part of the wall part of the switch mechanism storage part 21, and constitute a part of the wall part of one movable piece storage part 34.

  Further, the cover 17 has a cover body 50 made of an insulating thermosetting resin and having a rear surface opened. An opening 51 is formed on the upper surface of the front surface of the cover body 50. A window hole 52 is formed on one side below the opening 51. A triangular receiving portion 53 that opens rearward is formed at the center of the upper and lower edges of the opening 51.

  On both side surfaces of the cover 17, support attachment portions 23 for attachment to a support which is an attachment frame for a wiring device are formed. On one side of the support attachment portion 23, a holding claw portion 54 is formed that holds the support sandwiched between the groove portion 25 of the protrusion 24 of the case 16. A plurality of holding projections 55 that are engaged with the support are formed on the support attachment portion 23 on the other side.

  Cover outer locking portions 56 constituting the outer locking portions 26 are formed at four positions on both sides of the upper and lower surfaces of the cover 17. The cover outer side locking portion 56 has a locking piece 57 that protrudes rearward from the cover 17 and is attached to the recess 28 on the upper and lower surfaces of the case 16. A locking hole 58 that engages and locks the locking claw 29 is formed.

  In the inner central region of the cover 17 and in the vicinity of the lower side of the opening 51, a cover inner locking portion 59 constituting the inner locking portion 36 is formed. The cover inner locking portion 59 has a cover hook 60 projecting rearward from the rear surface of the cover 17, and a claw portion 61 projects upward on the upper surface of the rear end of the cover hook 60. ing. The claw portion 61 is formed such that the rear surface side is an inclined surface and the front surface side is a substantially vertical surface with respect to the upper surface of the cover hook 60.

  A plurality of engaging protrusions 62 are formed on the rear surface of the cover 17 to be engaged with and combined with the inside of the front opening of the case 16.

  The switch unit 13 includes a handle 70, a switch mechanism 71, and a substrate 72.

  The handle 70 is formed in an outer shape that is fitted into the opening 51 from the rear surface side of the cover 17, and a triangular swing protrusion 74 that is swingably engaged with the receiving portion 53 of the cover 17 at the center of the upper and lower surfaces. It protrudes and can swing in the left-right direction in accordance with the on / off operation. A display window 75 is formed on the front surface of the handle 70, and a display unit (not shown) such as a neon tube or LED that lights the switch mechanism 71 on and off in different colors is arranged inside the display window 75. Is done. On both sides of the handle 70, a handle plate attaching portion 76 for attaching a handle plate (not shown) for swinging the handle 70 is formed. A pair of upper and lower spring mounting holes 77 are formed in the center of the rear surface of the handle 70.

  The switch mechanism 71 includes, from the front of the case 16, a release button 79 disposed in the release button storage unit 30, a chain terminal 80 stored in each terminal storage unit 31, and a chain terminal 80 of one terminal storage unit 31. Common terminal fittings 81 that are combined in common, individual terminal fittings 82 that are combined with the respective chain terminals 80 on the other side and stored in each terminal storage section 31, and the other (lower) movable piece storage section 34. Terminal fitting 83 and terminal fitting 84, movable piece 85 arranged in each movable piece storage portion 34, and spring 86 attached to each movable piece 85.

  In the common terminal fitting 81, a movable piece receiving portion 87 arranged in one movable piece storage portion 34 is extended. One individual terminal fitting 82 is extended with a contact portion 88 disposed in one movable piece storage portion 34. One terminal fitting 83 is formed with a movable piece receiving portion 83a disposed in the other movable piece storage portion 34, and a substrate connecting portion 89 connected to the substrate 72 is extended. The other terminal fitting 84 is extended with a contact portion 90 disposed in the other movable piece storage portion 34 and a substrate connecting portion 91 connected to the substrate 72.

  One end of the spring 86 is press-fitted and fixed outside the movable piece 85, and the other end of the spring 86 is press-fitted and fixed in the spring mounting hole 77 of the handle 70.

  In one movable piece storage portion 34, the movable piece 85 comes into contact with and separates from the contact portion 88 of one individual terminal fitting 82 so that the movable piece 85 can swing by contacting the movable piece receiving portion 87 of the common terminal fitting 81. The switch unit 92 is configured. The first switch unit 92 functions as a switch unit of an on / off circuit that immediately turns on / off the load circuit connected to the common terminal fitting 81 and one individual terminal fitting 82 in response to an on / off operation of the handle 70.

  In the other movable piece storage portion 34, a second switch portion 93 that makes the movable piece 85 come into contact with and separates from the contact portion 90 of the terminal fitting 84 so as to be able to swing by contacting the movable piece receiving portion 83 a of the terminal fitting 83. Is configured. In the second switch section 93, the terminal fittings 83 and 84 are connected to the substrate 72, and the load circuit connected to the common terminal fitting 81 and the other individual terminal fitting 82 corresponds to the ON operation of the handle 70. It functions as a switch portion of a delay circuit as a load control circuit formed on the substrate 72 that is turned on and delayed with respect to an off operation.

  The substrate 72 includes a substrate 72a disposed in the substrate storage portion 22 of the case 16, and a substrate 72b disposed in the vicinity of the front surface of the case 16 from the switch mechanism storage portion 21 to the substrate storage portion 22. 72a. 72b are fixed to each other and electrically connected via a spacer, for example.

  An insertion hole 95 through which a spring 86 and the like are inserted is formed in the substrate 72b so as to correspond to the rear of the handle 70. A surface of the substrate 72b facing the case 16 is formed with a terminal portion (not shown) that is electrically connected to the common terminal fitting 81 and the other individual terminal fitting 82 in the assembled state. Furthermore, the board connection portions 89 and 91 of the terminal fittings 83 and 84 are connected to the board 72b.

  The board 72 is formed with a delay circuit as a load control circuit for controlling a load circuit connected to the common terminal fitting 81 and the other individual terminal fitting 82. The delay circuit energizes the load circuit in response to turning on of the second switch unit 93 by turning on the handle 70, and is also set in advance after turning off the second switch unit 93 by turning off the handle 70. The control is performed so that the energization is interrupted after the energization state of the load circuit is continued for a predetermined time.

  A setting unit (not shown) that sets the delay time is disposed on the front surface of the substrate 72b at a position inside the window hole 52 of the cover 17.

  Next, assembly of the wiring device 11 will be described.

  In the case 16, a release button 79, a chain terminal 80, terminal fittings 81, 82, 83, 84, and a substrate 72 are sequentially assembled.

  The springs 86 with the movable pieces 85 attached thereto are press-fitted and fixed in the spring attachment holes 77 of the handle 70. The movable pieces 85 incorporated in the handle 70 are inserted into the movable piece storage portions 34 of the case 16 and engaged with the movable piece receiving portions 87 and 83a.

  The handle 70 is fitted to the opening 51 from the rear surface side of the cover 17 and the cover 17 is put on the front of the case 16 to combine them. The inner locking portions 36 in the inner central region 17 are respectively locked.

  In the outer locking portions 26 at the four upper and lower surfaces of the case 16 and the cover 17, the locking holes 58 of the locking pieces 57 of the cover 17 are engaged with the locking claws 29 of the case 16. Locks in the attached state where 17 and abut.

  At the inner locking portion 36 in the inner central region of the case 16 and the cover 17, the claw portion 61 of the cover hook 60 engages with the claw portion 39 of the case hook 38, and the case 16 and the cover 17 are combined and contacted. Lock in the attached state. At this time, since the inner locking portion 36 has a positioning portion 40 for positioning the locking between the case hook 38 and the cover hook 60, the case hook 38 and the cover hook 60 are located inside the case 16 and the cover 17. The case hook 38 and the cover hook 60 can be easily positioned and locked even if they are not visible from the outside during mounting.

  In the assembled state of the wiring device 11, the terminal portion of the board 72b is electrically connected to the common terminal fitting 81 and the other individual terminal fitting 82, and after the second switch section 93 is turned off by the delay circuit of the board 72. The load circuit connected to the second switch section 93 can be energized continuously for a preset time.

  Next, the construction of the wiring device 11 will be described.

  For example, the wiring device 11 is used for turning on / off a lighting device and a ventilation fan of a toilet. It shall be constructed.

  The wiring fixture 11 is attached to the support using the support attachment portions 23 on both sides. One of the wires from the lighting device and ventilation fan led to the wiring box installed on the wall is inserted into the chain terminal 80 from the wire insertion hole 33 on one side of the rear surface of the case 16 and connected to the common terminal fitting 81. The other wire from the lighting device is inserted into the chain terminal 80 from the upper wire insertion hole 33 on the other side of the rear surface of the case 16 and connected to one individual terminal fitting 82, and the other wire from the ventilation fan is connected to the case 16 is inserted into the chain terminal 80 from the lower wire insertion hole 33 on the other side of the rear surface of the 16 and connected to the other individual terminal fitting 82. As a result, the lighting device is wired to the first switch unit 92, and the ventilation fan is wired to the slow circuit of the substrate 72.

  A support is attached to the wiring box, a decorative frame is attached to the support, and a handle plate attached to the handle plate attaching portion 76 of the handle 70 is disposed inside the decorative frame.

  Then, by swinging the handle 70 in the on-operation direction by the handle plate, each movable piece 85 swinging in the direction away from the contact portions 88 and 90 by the bias of the spring 86 is moved to the contact portion 88. , 90 oscillates in the direction approaching 90, contacts the contact portions 88, 90, and both the first switch portion 92 and the second switch portion 93 are turned on.

  Therefore, when the first switch unit 92 is turned on, the lighting device wired to the first switch unit 92 is energized to turn on the lighting device, and when the second switch unit 93 is turned on, the delay circuit of the substrate 72 is turned on. The ventilation fan is energized by energizing the ventilation fan.

  On the other hand, by swinging the handle 70 in the direction of turning off the handle 70 by the handle plate, each movable piece 85 swinging in the direction in contact with the contact portions 88, 90 by the bias of the spring 86 is , 90, and the first switch portion 92 and the second switch portion 93 are both turned off.

  For this reason, the lighting device wired to the first switch unit 92 is immediately turned off when the first switch unit 92 is turned off. However, even if the second switch unit 93 is turned off, the lighting device is wired to the delay circuit of the substrate 72. The energization fan is not stopped immediately, but energization is continued through the slow circuit of the substrate 72, and the operation is continued.

  In the delay circuit of the substrate 72, the energization to the ventilation fan is continued even after the second switch unit 93 is turned off, and the energization to the ventilation fan is cut off after a preset time has elapsed from the time when the second switch unit 93 is turned off. Stop the ventilation fan.

  In the wiring device 11 configured as described above, even if the wiring device main body 12 is formed in a two-module size, the outer side that locks the case 16 and the cover 17 on the upper and lower surfaces of the wiring device main body 12 in an attached state. In addition to providing the locking part 26, the inner locking part 36 that locks the case 16 and the cover 17 together in the attached state is provided in the inner central region of the wiring device body 12, so that the case 16 and the cover 17 are When assembling, the inner locking portion 36 can be locked together with the outer locking portion 26, so that the assembling is good and the inner locking portion 36 ensures that the central region of the cover 17 is lifted with respect to the case 16. Can be prevented.

  In addition, when the direction in which the claw portion 39 of the case hook 38 protrudes is directed to the switch mechanism storage portion 21 side, it is necessary to make a space for the cover hook 60 to enter between the switch mechanism storage portion 21 side, Although the case hook 38 protrudes toward the board storage part 22, the case hook 38 is directed toward the switch mechanism storage part 21 because the projection of the claw 39 of the case hook 38 faces the board storage part 22 side. Thus, the space of the substrate storage portion 22 is widened, the mounting of the substrate 72 to the substrate storage portion 22 can be facilitated, and the assemblability can be improved.

11 Wiring equipment
12 Wiring body
13 Switch unit
16 cases
17 Cover
21 Switch mechanism compartment
22 substrate storage unit
26 Outer locking part
36 Inner locking part
38 Case hook
39 Claw
40 Positioning part
51 openings
60 Cover hook
70 Handle
71 Switch mechanism
72 substrates
86 Spring

Claims (3)

Case having an open front, and attached to the front of the case, is formed into two or more modules size having a cover having an opening portion, the outer locking portion for locking together the casing and the cover on the lower surface in the mounted state is A wiring fixture main body provided with an inner locking portion that locks the case and the cover in an attached state at a position near the opening ;
Housed between the case and the cover of wiring accessories body, a handle operably from inside the cover from the front cover Ru fitted into the opening, and the operation by operating the handle by interposing a spring between the handle A switch unit having a switch mechanism to perform;
Wiring equipment characterized by comprising. The inner locking portion includes a case hook provided on the case, a cover hook provided on the cover and locked with the case hook in a mounting state between the case and the cover, and positioning for positioning the locking between the case hook and the cover hook. The wiring apparatus according to claim 1, wherein a portion is provided. The switch unit has a substrate on which a load control circuit is provided,
The case has a switch mechanism storage portion that is provided on one side of the inside and places a switch mechanism, and a substrate storage portion that is provided on the other side of the inside and places a substrate.
The case hook is disposed between the switch mechanism housing portion and the substrate housing portion inside the case, and has a claw portion to which the cover hook is locked, and the direction of the protruding direction of the claw portion is directed toward the substrate housing portion side. The wiring device according to claim 2, wherein the wiring device is provided.

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