JP2590268Y2 - Assembly structure of wiring device switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an assembling structure of a wiring device switch, and more particularly to a technique for greatly improving assemblability.

[Prior Art] Conventionally, as shown in FIG. 18, in a wiring device switch assembly structure in which a cover 5b is connected to a body 5a having a built-in switch portion, the body 5a and the cover 5b are generated by opening and closing the switch portion. It is a molded product of thermosetting resin such as urea resin so that it is not damaged by the arc.When connecting and assembling the body 5a and the cover 5b, the cover 5b is placed on the body 5a. Then, the metal plate material part b is inserted into the concave grooves a formed in both of them, and then the forked part c at the tip is expanded and swaged to connect the body 5a and the cover 5b.

[Problem to be Solved by the Invention] However, in such an assembly structure, the metal plate part b is required, and the work of expanding and crimping the tip is required, so that the number of parts increases and the number of assembly steps increases. There was a problem.

The present invention has been made in view of such a problem, and an object of the present invention is to assemble a wiring device switch assembly that can easily and quickly perform assembly without requiring a separate member for connection assembly. Is to provide.

[Means for Solving the Problems] The assembling structure of the wiring device switch of the present invention has a structure in which a cover 5b is externally connected to an outer peripheral surface of a body 5a, and the mounting frame 2 is standardized for wiring devices. A body which is formed to have a size of one unit size that can be mounted up to the number of pieces and has a locking claw 11a which is engaged with a locking hole 8 provided in the side piece 2b of the mounting frame 2; A quick connection terminal including a common terminal plate 15, a lock spring 16, and a release button 17 housed in one of a pair of connection terminal housings 13 and 14 formed at both ends in the body, and the other connection terminal housing 14 It has a connection terminal portion composed of terminal plates 18 and 20 housed in the terminal plates, locking springs 19 and 21 and a release button 22, and a movable contact 29 that contacts and separates from solid contacts 25a and 25b provided on the terminal plates 18 and 20. An opening / closing body 24 disposed inside the body so as to be able to be inverted around the contact portion with the common terminal plate 15 and exposed to the front of the body. A push button handle 32, a reversing handle 31 that reverses in response to the linear movement of the push button handle 32, and a linear motion of the push button handle 32 interposed between the push button handle 32 and the reversing handle 31; An opening / closing body having a slide cam 33 for converting the reversing motion, a return spring 37 for urging the push button handle 32 in a direction opposite to the direction of the push operation, and having a movable contact 29 when the push button handle 32 is pushed. A reversing mechanism means for reversingly driving the 24 via the coil spring 30, four locking projections 9 protruding from the outer surface of each of the opposing side surfaces of the body 5a, and a composite having toughness and excellent creep characteristics. Body locking holes 10a and 10b are formed to extend opposite the side walls of the cover 5b made of a resin molded product, to extend over the locking projections 9, to be elastically restored, and to be fitted to the respective locking projections 9. Four Lock leg 10
When the engagement with the body engagement holes 10a, 10b
The end surface of the locking projection 9 which comes into contact with the engaging surface is formed as an inclined surface 9a inclined toward the fitting direction.

[Function] As described above, the cover 5b is externally connected to the outer peripheral surface of the body 5a, and is configured to be standardized for wiring equipment.
A body having a size of one unit size that can be attached to up to three pieces and having a locking claw 11a protrudingly provided for engaging with a locking hole 8 provided in the side piece 2b of the mounting frame 2. When,
A pair of connection terminal storage sections 13, 14 formed at both ends in the body
Terminal plate 15, lock spring 16, release button
A quick-connecting terminal consisting of 17 and terminal plates 18 and 20 housed in the other connecting terminal housing 14, a connecting terminal part consisting of locking springs 19 and 21, and a release button 22, and provided on the terminal plates 18 and 20. Fixed contact 2
An open / close body 24 that has a movable contact 29 that comes in contact with / separates from 5a, 25b and that is disposed in the housing in a reversible manner around the contact portion with the common terminal plate 15, and a push button handle 32 that is exposed on the front surface of the housing,
A reversing handle 31 that reverses in response to the linear movement of the push button handle 32, and is interposed between the push button handle 32 and the reversing handle 31 to convert the linear motion of the push button handle 32 into a reversing motion of the reversing handle 31. Slide cam 33,
A return spring 37 that urges the push button handle 32 in a direction opposite to the direction of the push operation is provided, and the open / close body 24 having the movable contact 29 is inverted via the coil spring 30 when the push button handle 32 is pushed. Inverting mechanism means to be driven, four locking projections 9 protruding one by one on each outer surface of the opposing side surfaces of the body 5a, and a cover 5b made of a synthetic resin molded product having toughness and excellent creep characteristics. And four locking legs 10 which extend opposite to the side walls of the body and which are elastically displaced over the locking projections 9 and are formed with body locking holes 10a and 10b to be fitted in the respective locking projections 9. With body locking holes 10a, 10
The molded product made of synthetic resin which is tough and has excellent creep characteristics by forming the end face of the locking projection 9 which comes into contact with the locking leg 10 at the time of fitting with the b into the inclined surface 9a inclined toward the fitting direction. The locking leg 10 of the cover 5b is moved by the elastic
And the body locking hole 10a of the locking leg 10 is
The cover 5b can be connected and assembled to the body 5a easily and quickly without the need for a separate connection fitting.
The tip of 10 abuts on the inclined surface 9a of the locking projection 9, and the locking leg 10 is guided and expanded outward by the inclined surface 9a, so that the locking leg 10 easily gets over the locking projection 9. And the assembly work becomes very easy. In addition, since the body is formed to a size that can be attached to the standardized mounting frame 2, the mounting frame 2 and the like can be shared with an embedded wiring device using the mounting frame 2 and used for mounting. It is not necessary to newly manufacture the members, which leads to a reduction in manufacturing cost, and since the same construction technology as the wiring device can be applied at the time of construction, there is no need to learn a new technology, and further, the connection terminal portion 13, By adopting the quick-connecting terminal structure using the locking springs 19 and 21 in 14, the wiring work is simplified and the construction is facilitated.

[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

The push button switch 5 shown in FIG. 1 is a synthetic resin body 5a.
And a cover 5b made of a synthetic resin to form a body, and a body locking hole 10a provided in a locking leg 10 of the body 5a hanging down from a pair of opposed side surfaces of the cover 5b to lock the body 5a. The projection 9 is engaged and connected. Here, the body locking holes 10a, 10
The end surface of the locking projection 9 that comes into contact with the locking legs 10 when fitting with the b is an inclined surface 9a that is inclined toward the fitting direction. 9a, the locking leg 10 is guided by the inclined surface 9a and is expanded outward, so that the locking leg 10 can easily get over the locking projection 9, and the body engagement of the locking leg 10 The hole 10 a can be smoothly engaged and connected to the locking projection 9. Cover 5b
Made of thermoplastic resin such as GF-PBT (polybutylene terephthalate reinforced with glass fiber), it is tough and has excellent creep properties. The push button switch 5 is formed in a size of one module of a standardized wiring device.

The locking claws 11a, 11b corresponding to the locking holes 8 formed on the longitudinal sides of the both sides 2b, 2b of the mounting frame 2 on both sides of the cover 5b.
Respectively, and a cover 5 is provided on the back of one of the locking claws 11b.
A space 12 for obtaining a bending allowance formed by a hole vertically penetrating the outer wall of b is formed, so that the locking claw 11b can be flexed elastically backward. A locking projection 70 is provided on one end side of the upper portion of the cover 5b, and a fulcrum projection 71 protrudes slightly inside the locking projection 70. Has a hole 72 at the other end thereof, and an opening edge of the hole 72 is a locking edge 72a.

Connection terminal housings 13 and 14 are formed on both sides of the body 5a, and one connection terminal housing 13 has a common terminal plate 15, a locking spring 16,
A quick connection terminal comprising a release button 17 is housed, and the other connection terminal housing part 14 has a terminal plate 18, a locking spring 19, which constitutes a first connection terminal part, and a terminal which constitutes a second connection terminal part. The plate 20 and the lock spring 21 are housed therein, and a common release button 22 is housed in the first and second connection terminals.

Here, the locking spring 1 is attached to the first and second connection terminal portions 13 and 14.
The adoption of the quick-connect terminal structure using 9, 21 simplifies wiring work and facilitates construction.

The terminal plate 18 is provided with an extension piece 18a.
Reference numeral 8a extends over the partition wall 14a and extends into the central storage portion 23, and further close to the partition wall 14a side. The extension piece 18a is provided with a fixed contact 25a.

The terminal plate 20 is located along the inner wall of the body 5a.
The fixed contact 25b corresponding to the fixed contact 25a is provided at the front end of the bent piece 20a.

The opening / closing body 24 is formed of a conductive plate,
The projection 28 provided at the lower end of both ends is
It is rotatable around the lower part of the V-shaped recess 27 with the lower end edge being in contact with the support plate 15a while being fitted into the V-shaped recess 27 provided on the side wall of the V-shaped recess 27. Then, the movable contact 29 provided on both upper surfaces of the opening / closing body 24 comes into contact with and separates from the fixed contacts 25a and 25b in accordance with the rotation, so that the common connection terminal portion and the first or second connection terminal portion are connected to each other. It turns on and off between.

The coil spring 30 drives the opening / closing body 24 in reverse.
And a reversing mechanism including a reversing handle 31, a push button handle 32, a slide cam 33, and the like.

The lower portion of the coil spring 30 is locked by a spring seat 24a provided at the upper edge of the horizontal piece of the opening / closing body 24, and the upper portion is
The opening / closing member 24 is inserted into a cylindrical portion 31a integrally protruding from the lower portion of the opening 1 to invert the opening / closing body 24 in accordance with the movement of the inversion handle 31 in both directions.

The reversing handle 31 is inserted into the recess 51 from below into a hole 52 opened at the bottom of the recess 51 of the cover 5b, and the inverted triangular shaft 31c provided on both sides of the lower tubular portion 31a of the reversing handle 31 is connected to the cover 5b. Engagement projections 34, 34 that engage with the slide cam 33 are protrudingly provided on both sides of a rectangular parallelepiped portion 31 b on the upper part of the reversing handle 31 so as to be rotatably supported on a bearing 50 on the inner wall.

The push button handle 32 is housed in the recess 51 so as to be able to move up and down by locking the locking projections 36 and 36 in the vertical locking grooves 35 formed on the inner wall surfaces on both sides of the recess 51 of the cover 5b, Flat 37
A return spring 37, which is formed by integrally extending two return spring pieces 37a, 37a extending downward from b, is provided on the lower surface of the push button handle 32 in a hole 37d formed in the flat piece 37b. By inserting a projection (not shown), it is attached to the lower surface of the push button handle 32, and is constantly biased upward by elastically contacting the tip of the return spring piece 37 a, 37 a of the return spring 37 with the bottom surface of the recess 51.

The slide cam 33 is formed in a substantially rectangular shape by a thermoplastic resin having a high elasticity such as polyacetal, and a hooking cam body 38 corresponding to the hooking projection 34 of the reversing handle 31 projects on the lower surface of the opposing side portion. And a pair of spring pieces 33a, 33a integrally protruding in a C-shape at the center of another side portion,
A projection 32A formed on the lower surface of the push button handle 32 is inserted between the distal ends of the spring pieces 33a, 33a, and the slide cam 33 is slidably mounted on the lower surface of the push button handle 32.
A return force in the anti-sliding direction is given by the elasticity of the wires 33a.

The push button switch 5 configured as described above covers the lower end of the vertical side of one side piece 2b of the mounting frame 2 by fitting the cover 5b from below into the window hole 6 of the metal mounting frame 2 shown in FIG.
If the contact point is rotated with the contact point as a fulcrum in a state of contact with the upper peripheral surface of 5b, the locking claw 11a on the fulcrum side engages with the locking hole 8, and
The lower end of the vertical side of the other side piece 2b pushes the locking claw 11b inward by the bending allowance of the space 12 and the elastic force of the material of the cover 5b to get over the locking claw 11b and engage the locking claw 11b. Engage the stop hole 8. The push button switch 5 locked with the locking claws 11a and 11b engaged with the locking holes 8 and 8, respectively, causes the push button handle 32 to protrude from the window hole 6 of the mounting frame 2.

In this manner, since the body is formed to have dimensions that can be attached to the standardized mounting frame 2, the mounting frame 2 and the like can be shared with an embedded wiring device using the mounting frame 2. There is an advantage that it is not necessary to newly manufacture a mounting member, which leads to a reduction in manufacturing cost, and that the construction technique similar to that of the wiring device can be applied at the time of construction, so that there is no need to learn a new technique.

The push button switch 5 attached to the attachment frame 2 in this manner is provided with a piano handle 43. This piano handle
Reference numeral 43 is as shown in FIGS. 3 and 4, in which a locking foot 43a provided on one side edge of the piano handle 43 is locked to the locking projection 70 of the cover 5b, and With the lower surface of the piano handle 43 in contact with the other side edge of the piano handle 43, the locking foot 43
b into the hole 72 at the other end of the cover 5b so as to be movable up and down, and the locking portion of the locking foot 43b is locked to the locking edge 72a of the hole 72.
It is locked to. When the locking feet 43a and 43b are released, the piano handle 43 can be removed. With the piano handle 43 attached as described above, the push button handle 32 can be pushed and driven by pushing and rotating the piano handle 43. In this state, the semicircular projection 73 on the upper surface of the push button handle 32 contacts the lower surface of the piano handle 43.

Next, the operation of the piano handle switch of the present invention will be described with reference to FIGS.

First, in the state shown in FIG.
When the piano handle 43 is omitted in the figure), the push button handle 32 is pushed down against the spring piece 37a, and the slide cam 33 is pushed by pushing down the push button handle 32.
Is lowered, and the upper side of the reversing handle 31 (FIG. 5 (FIG. 5 (b)) is in a state where the base of the inside inclined surface of the engaging cam body 38 at one end of the slide cam 33 (left side in FIG. When the push button handle 32 is further pressed, the hooking projection 34 is pushed down along the inner inclined surface of the hooking cam body 38, and the reversing handle 31 is pressed. Rotates reversely as shown in FIGS. 7 (b) to 9 (b). By the way, when one engaging cam body 38 of the slide cam 33 slides while engaging with one engaging protrusion 34 of the reversing handle 31, the other engaging cam body 38 is rotated before the reversing handle 31 that rotates reversibly becomes horizontal. The length between the pair of engaging cam bodies 38 and the length between the pair of engaging projections 34 are set so as to move and be positioned inside the other engaging projection 34.
With the above-described configuration, the engagement protrusion 34 is moved to the fifth position in accordance with the inversion of the inversion handle 31 due to the depression of the push button handle 32.
Figure (b) → Figure 6 (b) → Figure 7 (b) → Figure 8 (b)
→ As shown in FIG. 9 (b), it rotates counterclockwise, and with this rotation, the engaging cam body 38 is opposed to the spring piece 33a by the engaging projection 34, and FIG. 5 (a) → FIG. (A) → FIG. 7 (a) → FIG. 8 (a) → Slide to the left as shown in FIG. 9 (a), and in the course of inversion of the inversion handle 32 as shown in FIG. 8 (a). Even if the reversing handle 32 is rotated to a position beyond the horizontal and the other engaging projection 34 is raised, the slide cam 33 is slid to the left so that the other end (the right in FIG. 7B) Is located on the left side of the right engagement protrusion 34 so that the rotation of the inversion handle 31 is not hindered. Here, if an inner inclined surface is formed inside the engaging projection 34 as shown in FIG. 15, the engaging cam body positioned inside when the engaging projection 34
38 can escape on the inner slope to prevent interference. Further, when the reversing handle 31 is rotated in reverse by pushing down the push button handle 32 as described above, the spring piece 33a is used.
The reversing handle 31 and the slide cam 33 are inverted by reversing the reversing handle 31 while sliding the slide cam 33 against
And can reversely rotate the reversing handle 31 smoothly due to the sliding frictional resistance of line contact.

When the reversing handle 31 is reversingly rotated as described above, the coil spring 30 reciprocates and swings, and the opening / closing body 24 is reversed,
The movable contact 29 is separated from the one fixed contact 25a with which the movable contact 29 is in contact, and comes into contact with the other fixed contact 25b.

When the pressing force of the piano handle 43 is released after the inversion, the push button handle 32 is pushed up by the spring piece 37a of the return spring 37 as shown in FIG. 10 (b), and the piano handle 43 also returns to the original state. . At the same time, the slide cam 33 slides and returns to the central portion by the spring force of the spring piece 33a, and FIG. 10 (a)
It becomes as shown in. If the piano handle 43 is pressed down in this state, the opening / closing body 24 can be inverted by the same operation as described above. After the inversion, if the pressing force of the piano handle 43 is released, the state returns to the state shown in FIG.

Incidentally, in the embodiment shown in FIG. 3, the mounting frame 2 has dimensions (three modules) for three standardized wiring devices.
In the embodiment shown in FIG. 11, one push button switch 5 of one module is mounted on the mounting frame 2 shown in FIG. 3, and one mounting of the three modules is mounted on the mounting frame 2 of three modules. A large-sized piano handle 43 is attached, and one large push-button switch 5 is operated by the large piano handle 43. As shown in FIG. Two piano handles 43 having a size of 1.5 modules may be mounted, or three push button switches 5 may be mounted on the mounting frame 2 and three piano handles 43 may be mounted as shown in FIG. Is also good. In this embodiment, further,
As shown in FIG. 13, when the central piano handle 43 is pushed, the piano handles 43 on both sides can be pushed at the same time, and the piano handles 43 on both sides may be pushed alone. As shown in FIG. 14 (c), one mounting frame 2 has two piano handles 4 of a size corresponding to 1.5 modules.
3 and one two-module piano handle 43 may be attached next to it. 14 (a) and 14 (b)
In (c), K is a decorative frame, which covers the mounting frame 2.

[Effects of the Invention] In short, the present invention is equivalent to one unit of a unit size that can be attached to a mounting frame standardized for a wiring device, in which a cover is externally connected to an outer peripheral surface of a body and is standardized for a wiring device. One of a pair of connection terminal receiving portions formed at both ends of the body, and having a projection formed with a locking claw that is formed to the dimensions of the mounting frame and engages with a locking hole provided in a side piece of the mounting frame. A quick-connecting terminal comprising a common terminal plate, a locking spring, and a release button housed in the other terminal terminal; a connecting terminal portion comprising a locking spring, a release button; An opening / closing body having a movable contact that comes into contact with and separate from the fixed contact provided on the body, and which is disposed in the body in a reversible manner around a contact portion with the common terminal plate, a push button handle exposed on the front surface of the body, and the push button Reversing hand that reverses according to the linear movement of the handle A slide cam interposed between the push button handle and the reversing handle to convert a linear movement of the push button handle into a reversing motion of the reversing handle, and urges the push button handle in a direction opposite to the direction of the pushing operation. A reversing mechanism means for reversingly driving an opening / closing body having a movable contact when a push button handle is pressed by a push spring with a return spring via a coil spring, and a pair of protruding members are provided on each of outer surfaces of opposing side surfaces of the body. And four locking projections extending opposite to both side walls of a cover made of a synthetic resin molded product having toughness and excellent creep characteristics, and being elastically displaced over the locking projections. Four locking legs formed with a body locking hole that fits into the projection, and the end surface of the locking projection that contacts the locking leg when fitted with the body locking hole is inclined toward the fitting direction. To incline As a result, the locking legs of the cover of a synthetic resin molded product that is tough and have excellent creep characteristics ride over the locking projections due to its elastic displacement, and the body locking holes of the locking legs engage with the locking projections. Connection and assembly can be performed together, and the connection and assembly of the cover to the body can be easily and quickly performed without the need for a separate connection bracket.At the time of connection and assembly, the tip of the locking leg contacts the inclined surface of the locking projection, Since the locking legs are guided and expanded outward by the inclined surface, there is an advantage that the locking legs can easily get over the locking projections, and the assembling work becomes very easy. In addition, since the body is formed to a size that can be attached to the standardized mounting frame, the mounting frame can be shared with the embedded wiring device using the mounting frame, and the mounting member is used. This eliminates the need for new manufacturing, which leads to a reduction in manufacturing costs. In addition, the construction technology similar to wiring equipment can be applied at the time of construction. The adoption of the quick-connecting terminal structure using the locking spring has the advantage that the wiring work is simplified and the construction is facilitated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a push button switch according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are cross-sectional views of a state where the piano handle is pushed back to return and a pressed state. 3 is an exploded perspective view showing a push button switch, a mounting frame, and a piano handle, FIG. 4 is a perspective view seen from the back of the piano handle, FIGS. 5 (a) and (b), and FIGS. 6 (a) and (b). , FIGS. 7 (a) and (b), FIGS. 8 (a) and (b), and FIG. 9 (a)
(B), FIGS. 10 (a) and (b) are explanatory diagrams showing the operation sequence showing the relationship between the slide cam and the projection, and explanatory diagrams showing the entire operation sequence, respectively, and FIGS. 11 (a) and (b). FIGS. 12 (a) and (b) and FIGS. 13 (a) and (b) are an exploded view and a plan view of each embodiment showing the number of push-button switches and the number of piano handles attached to the mounting frame, respectively. 14A and 14B are a plan view and a side view of an embodiment showing an example in which a decorative frame is attached. FIG. 14C is a plan view of another embodiment.
FIG. 15 is a partially enlarged side view of the push button handle and the reversing handle of the above, FIG. 16 is a schematic exploded perspective view of the same, and FIG.
(B) and (c) are operation explanatory views showing the connection operation of the above, and FIG.
FIGS. 19 (a) and 19 (b) are exploded perspective views of a conventional example, and FIGS. 19 (a) and 19 (b) are operation explanatory views of the same as above. 5a is a body, 5b is a cover, 9 is a locking projection, 10 is a locking leg, and 10a is a body. The locking hole S is a switch unit.

Claims (1)

(57) [Scope of request for utility model registration] A cover is externally connected to an outer peripheral surface of a body, and is formed to have one unit size which can be attached to a mounting frame standardized for wiring equipment up to three. A common body accommodated in one of a pair of connection terminal accommodating portions formed at both ends of the body, together with a body protrudingly provided with a locking claw engaging with a locking hole provided in a side piece of the mounting frame. A quick-connecting terminal comprising a plate, a locking spring, and a release button, and a terminal plate, a locking spring, and a connecting terminal portion comprising a release button, which are housed in the other connection terminal storage portion, and a fixed contact provided on the terminal plate. An opening / closing body having movable contacts for contacting and separating and being disposed in the body in a reversible manner around a contact portion with the common terminal plate, a push button handle exposed on the front surface of the body, and a linear movement of the push button handle The reversing handle that reverses according to the push button handle A push cam including a slide cam interposed between the handle and the linear cam of the push button handle to convert the motion of the push button handle into a reversing motion of the reversing handle, and a return spring for urging the push button handle in a direction opposite to the direction of the pressing operation. Reversing mechanism means for reversingly driving an opening / closing body having a movable contact via a coil spring when the handle is pushed, and four locking projections projecting one by one on each outer surface of the opposing side surfaces of the body; A body member that is extended to face both side walls of a cover made of a synthetic resin molded article having toughness and excellent creep characteristics, and is elastically displaced over the locking projections and fitted to each locking projection. Four locking legs formed with a stop hole, and the end surface of the locking projection that comes into contact with the locking leg when fitted to the body locking hole is formed as an inclined surface that is inclined toward the fitting direction. Feature Assembled structure of the line appliances switch.