JPH04109804A - Structure for mounting wiring accessories to mounting frame - Google Patents

Abstract

PURPOSE:To easily mount wiring accessories to a metal-made mounting frame of large strength by providing a hollow space, by which an end part wall can be deflected in a direction opposite to a stop protrusive part, in the inside of at least the one end part wall of a cover provided with the stop protrusive part of the wiring accessories. CONSTITUTION:In a condition that a vertical piece lower end of one side piece 2b of a mounting frame 2 is brought into contact with a peripheral side upper surface of a cover 5b, the mounting frame 2 is turned with this contact point serving as a supporting point to mount wiring accessories A which are press button switches. When a fixed side stop protrusive part 11a is stopped to a stop hole 8 and turned, an elastic piece 53 is deflected to a side of a hollow space 54 and reset, when the part 11a is turned to a predetermined position, to stop a movable side stop protrusive part 11b to a stop hole 8. In this stop condition, a space for constituting a jig insertion port 12 can be provided between an internal peripheral edge of a central opening part 6 of the mounting frame 2 and a rise up piece of a receiving part 53c of the elastic piece 53.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for fitting a wiring device into a mounting frame.

[Prior Art] Conventionally, there have been metal mounting frames and synthetic resin mounting frames as mounting frames for mounting wiring devices on switch boxes.

[Problems to be Solved by the Invention] A wiring device is attached to a metal mounting frame by deforming a part of the metal mounting frame with a screwdriver or the like and tightening it into engagement recesses provided at both ends of the wiring device. Therefore, the fixing work was troublesome. In addition, when removing a wiring device from the mounting frame once it has been installed, the mounting frame must be deformed and returned to its original shape, which is cumbersome, and the deformation makes it difficult to reuse the mounting frame. There was a fear that I wouldn't be able to do it.

On the other hand, in the case of a synthetic resin mounting frame, the elasticity of the mounting frame is used to lock the locking claw of the wiring device to the locking part of the mounting frame, and the wiring device is attached to the mounting frame, making installation easy. On the other hand, there is an advantage that it can be easily removed by utilizing the elasticity of the mounting frame, but there is a problem with the strength of the mounting frame itself.

The present invention was devised in view of the above-mentioned problems of the prior art, and its purpose is to easily attach a wiring device to a strong metal mounting frame, and to To provide a structure for mounting a wiring device to a mounting frame, which allows the wiring device to be easily removed from the mounting frame without causing deformation of the frame.

[Means for Solving the Problems] In order to achieve the above object, the mounting structure of the wiring device switch of the present invention to the mounting frame includes providing locking projections at both ends of the thermoplastic synthetic resin cover of the wiring device, and A locking hole is provided on each side of the approximately rectangular mounting frame, and the locking protrusion of the wiring device fitted into the central opening of the mounting frame is removably locked in the locking hole on both sides of the mounting frame. In the structure in which the wiring device is attached to the mounting frame, at least one end wall of the cover provided with the locking convex portion of the wiring device is deflected in the direction opposite to the locking convex portion. A space is provided, and a receiving part for locking the tip of a jig such as a screwdriver is integrally provided on the back side of the end wall facing the space, and the gap between the inner peripheral edge of the central opening of the mounting frame and the cover is The tip of the jig can be inserted into the space through the jig insertion opening formed by the above.

[Accordingly, the wiring device of the present invention is attached to the mounting frame by attaching the end wall to the inside of at least one end wall of the cover provided with the locking convex portion of the wiring device. Since there is a space that allows the wiring device to bend in the direction of the protrusion, when fitting the wiring device into the central opening of the mounting frame, the end wall on the side where the space is provided will bend in the direction opposite to the locking protrusion. Therefore, even if the mounting frame is made of metal, the locking protrusion can be smoothly locked into the locking hole provided on the side piece of the mounting frame without deforming the mounting frame.
Installation to the mounting frame is extremely easy.

In addition, a receiving part for locking the tip of a jig such as a screwdriver is integrally provided on the back side of the end wall facing the empty space, and a jig insertion part is formed in the gap between the inner peripheral edge of the central opening of the mounting frame and the cover. The tip of the jig can be inserted into the space from the opening, so when removing the wiring device from the mounting frame, insert the jig into the space from the jig insertion port and lock it in the receiving part, and remove the jig from the opening. The locking protrusion is separated from the locking hole of the mounting frame by rotating the end wall so as to flex in the direction opposite to the locking protrusion while in contact with the inner peripheral edge of the central opening of the mounting frame. be able to.

Therefore, even if the mounting frame is made of metal, the wiring device can be easily removed without deforming the mounting frame.

[Example] The present invention will be described in detail below based on an example shown in the accompanying drawings.

In this embodiment, a push button switch is used as the wiring device A,
An example in which a push button switch is attached to a mounting frame 2 will be explained.

The push button switch shown in FIG. 2 has a body 5a made of synthetic resin and a cover 5b made of synthetic resin.The push button switch shown in FIG. The body locking hole 10m is connected to the locking protrusion 9 of the body 5a. The force t<-51) is made of an elastic thermoplastic synthetic resin such as glass fiber reinforced polybutylene terephthalate.

As shown in Fig. 1, the mounting frame 2 is made of a strong material (metal) such as iron or stainless steel and has a rectangular shape.
Locking holes 8 are provided in the vertical pieces of both side pieces 2b of the mounting frame 2, respectively. The strength of the side piece 2b is increased by increasing the hanging length. In the case of this embodiment, one side piece 2b is provided with three pairs of locking holes 8, and the other side piece 2b is provided with three pairs of locking holes 8. Of course, three pairs of locking holes 8 may be provided in each side piece 2b, or three pairs of locking holes 3 may be provided in each pair.

Now, locking protrusions 11 corresponding to the locking holes 8 are protruded from both ends of the cover 5b of the wiring device A. In the embodiment shown in the accompanying drawings, the locking projections 11 include a pair of fixed side locking projections 11a and only one movable side locking projection 11b.

That is, a pair of fixed-side locking convex portions 11a are protruded from one end of the cover 5b so as to correspond to the pair of locking holes 8.

On the other hand, at the other end of the force bar 5b, as shown in FIG. A notch 53a is provided at the upper center part to reduce the deflection force in this center part, and a movable side locking convex part 11b is provided on the outer surface of this center part.
By protruding it. This locking convex portion 11b has a fourth locking portion to be described later.
An inclined surface 58 is provided to make the elastic piece 53 more flexible in the state shown in Figure (c). Further, on the upper outer surface on both sides of the notch 53a of the elastic piece 53, there are tapered surfaces 57 for allowing the wiring device A to smoothly enter between the side pieces 2b of the mounting frame 2 in the state shown in FIG. 4(b), which will be described later. is formed. Further, an L-shaped receiving portion 53c for locking the tip of the jig is integrally formed at the center of the back surface of the elastic piece 53.

A locking protrusion 70 is provided on one end side of the upper part of the cover 5b, and a fulcrum protrusion 71 is protruded slightly inside the locking protrusion 70. A hole 72 is provided at the other end, and the opening edge of the hole 72 serves as a locking edge 72a.

Connection terminal storage areas 13 and 14 are formed on both sides of the body 5a, and one connection terminal storage area 13 stores a quick connection terminal consisting of a common terminal plate 15, a locking spring 16, and a release button 17, and the other connection terminal storage area 13 stores a quick connection terminal consisting of a common terminal plate 15, a locking spring 16, and a release button 17. The connection terminal housing section 14 stores a terminal board 18 and a locking spring 19 that constitute a first connection terminal section, and a terminal board 20 and a locking spring 21 that constitute a second connection terminal section. 1
, a common release button 22 is housed in the second connection terminal portion.

The terminal plate 18 is provided with an extension piece 18a, which extends over the partition wall 14a and into the central storage portion 23, and is also close to the partition wall 14a side. A fixed contact 25a is provided on the piece 18a.

Further, the terminal plate 20 extends into the central storage portion 23 along the inner wall of the body 5a, and its tip is bent along the partition wall of the connection terminal storage portion 13, and the fixed contact 25a is attached to the tip of the bent piece 20a. A fixed contact 25b corresponding to the above is provided.

The opening/closing body 24 is formed of a conductive plate, and the central storage part 2
Figure 4 shows the protrusions 28 that are inserted into the interior of
As shown in a), it is fitted into a V-shaped recess 27 provided on the side wall of the central storage section 23 and is rotatable around the lower part of the V-shaped recess 27 with its lower edge in contact with the support plate 15a. . Then, the movable contacts 29 provided on both upper surfaces of the opening/closing body 24 are brought into contact with the fixed contacts 25a and 25b according to the rotation.
The common connection terminal section and the first. Alternatively, the connection with the second connection terminal section is turned on and off.

The coil spring 3 drives this opening/closing body 24 in reverse.
0, a reversing handle 31, a push button handle 32, a slide cam 33, and the like.

The lower part of the coil spring 30 is engaged with a spring seat 24a provided on the upper edge of the horizontal piece of the opening/closing body 24, and the upper part is inserted into a cylindrical part 31a that is integrally provided at the lower part of the reversing handle 31, and the coil spring 30 is inverted. The opening/closing body 24 is reversely driven in accordance with the movement of the handle 31 in both directions.

The reversing handle 31 is inserted into the recess 51 from below through 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 cylindrical portion 31a of the reversing handle 31 is inserted into the recess 51 of the cover 5b. The rectangular parallelepiped portion 3 at the top of the reversing handle 31 is rotatably supported on a bearing 50 on the inner wall.
Engagement protrusions 34 and 34 that engage with the slide cam 33 are protruded from the upper portions of both sides of 1b.

The push button handle 32 has a locking protrusion 36 in a vertical locking groove 35 formed on both inner wall surfaces of the recess 51 of the cover 5b.
．． 36 and is housed in the recess 51 so as to be vertically movable, and is configured by integrally extending downwardly two return spring pieces 37a, 37a which are expanded downward from the child piece 37b. 37 is attached to the lower surface of the push button handle 32 by inserting a protrusion (not shown) protruding from the lower surface of the push button handle 32 into a hole 37d drilled in the child piece 37b, and the return spring piece 37a of the return spring 37 is attached to the lower surface of the push button handle 32. 37a tip into recess 51
It is constantly biased upward by being in elastic contact with the bottom surface of the

The slide cam 33 is made of highly elastic thermoplastic resin such as boria 7-tar, and is molded into a substantially mouth shape.
A pair of spring pieces '33a are integrally provided in the central part of another side part, and a pair of spring pieces '33a are integrally provided in the central part of another side part.
, 33a, a protrusion (not shown) formed on the lower surface of the push button handle 32 is inserted between the tips of the spring pieces 33a, 33a, and the slide cam 33 is slidably mounted on the lower surface of the push button handle 32. And spring piece 33a.

The elasticity of 33a provides a return force in the anti-sliding direction.

The push-button switch constructed in this manner is mounted by fitting the cover 5b into the central opening 6 of the mounting frame 2 from below, as shown in FIG. That is, the stop protrusions 11a and 11b provided at both ends of the push-button switch 5 are respectively locked in one of a plurality of pairs of locking holes 8 provided in both side pieces 2b of the mounting frame 2. The order of installation is as shown in FIG. 4(a), with the lower end of the vertical piece of one side piece 2b of the mounting frame 2 in contact with the upper peripheral surface of the cover 5b, and then using this contact point as a fulcrum. Attach the wiring fixture A, which is a push button switch, to the mounting frame 2 by rotating it as shown in Figures 2(b), (c), and (d). In the state shown in FIG. 4(a), the fixed side locking convex portion 1. ], a is locked in the locking hole 8, FIG. 4(b)
When rotated as shown in FIG. 4(c), the elastic piece 53 is bent toward the space 54 as shown in FIG. 4(d).
), the elastic piece 53 returns and the movable locking protrusion 11b locks in the locking hole 8. Figure 5(a) (
b) is a drawing showing the initial state and the bent state of the elastic piece 53, and the position of the dotted line shown in FIG. 5(b) indicates the initial state position.

In the stopped state shown in FIG. 4(d) above, there is a gap forming the jig insertion opening 12 between the inner peripheral edge of the central opening 6 of the mounting frame 2 and the rising piece of the receiving part 53C of the elastic piece 53. .

Next, wiring fixture A is attached to the mounting frame 2 as described above.
In order to remove the Insertion port 12
Insert the jig further and lock it in the receiving part 53c in the cavity 54, and in this state, as shown in FIG. When the jig is rotated in the direction of the arrow using the part as a rotational fulcrum and a rotational torque is applied, the elastic piece 53 is bent toward the space 54, and the movable side locking part convex portion 11b is disengaged from the locking hole 8. When further rotational torque is applied, the mounting frame 2 is pushed up as shown in Fig. 4 (g>), and the wiring fixture A can be removed from the mounting frame 2.
The elastic piece 53 bends inward at the space 54, but the stopper 5
6, the elastic piece 53 is prevented from being bent more than necessary.

A fixed side locking convex portion 11a and a movable side locking convex portion 1 are provided on the mounting frame 2.
The wiring fixture A, which is a push button switch, is mounted by locking it into the locking hole 8 of 1b, and causes the push button handle 32 to protrude from the central opening 6 of the mounting frame 2. In this state, a piano handle 43 is attached to the wiring fixture A, which is a push button switch. This piano handle 43 has a locking part (not shown) provided on one side edge of the piano handle 43 that locks with a locking protrusion 70 of the cover 5b, and places the lower surface of the piano handle 43 on the fulcrum protrusion 71. The locking portion 43a on the other side edge of the piano handle 43
is inserted into the hole 72 at the other end of the cover 5b so as to be vertically movable, and the locking portion of the locking portion 43b is locked to the locking edge 72a of the hole 72. Then, the piano handle 43 can be removed by releasing the locking portions 43a and 43b. 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 protrusion 73 on the upper surface of the push button handle 32 is in contact with the lower surface of the piano handle 43.

Since the present invention relates to the structure of mounting the wiring device A to the mounting frame 2, a detailed explanation of the operation of the push button switch of the embodiment will be omitted. Further, it goes without saying that the wiring device A applicable to the present invention may be any other wiring device such as an outlet other than the above-mentioned push button switch.

[Effects of the Invention] The present invention provides a space on the inside of at least one end wall of a cover provided with a locking projection of a wiring device, which allows the end wall to be deflected in a direction opposite to the locking projection. Therefore, when fitting a wiring device into the central opening of the mounting frame, the end wall on the side where the space is provided will bend in the direction opposite to the locking protrusion, making it difficult to install even if the mounting frame is made of metal. The locking protrusion can be smoothly locked into the locking hole provided on the side piece of the mounting frame without deforming the frame, making installation to the mounting frame extremely easy.
Furthermore, a receiving part for locking the tip of a jig such as a screwdriver is integrally provided on the back side of the end wall facing the empty space, and the jig can be inserted in the gap formed between the inner peripheral edge of the central opening of the mounting frame and the cover. The tip of the jig can be inserted into the cavity from the opening, so when removing wiring equipment, insert the jig into the cavity from the jig insertion opening and lock it in the receiving part, and then remove the jig in this state. By rotating the end wall so as to deflect it in the direction opposite to the locking protrusion while it is in contact with the inner peripheral edge of the central opening of the mounting frame, the locking protrusion can be removed from the locking hole of the mounting frame. This has the effect that the wiring device can be easily removed without deforming even if it is a metal mounting frame.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is an exploded perspective view of a wiring device used in the same, Fig. 3 is an enlarged perspective view of the main part with the cover partially cut out, and Fig. 4 ( a) to (g) are explanatory diagrams for installing and removing the same wiring equipment as above, and Fig. 5 (
a>(b) is an explanatory diagram of the operation of the same elastic piece as above. A is a wiring device, 2 is a mounting frame, 2b is a side piece, 5b is a cover, 8 is a locking hole, lla, llb are locking protrusions, 12 is a jig insertion port, 53 is an elastic piece, 53c is a receiving part , 54 are blank spaces. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 A is the wiring device 11b with the connecting protrusion Figure 4 Figure 5 (b)

Claims (1)

[Claims] (1) A locking protrusion is provided at each end of the thermoplastic synthetic resin cover of the wiring device, and a locking hole is provided on each side of the approximately rectangular mounting frame, and the cover is fitted into the center opening of the mounting frame. In the structure in which the wiring device is attached to the mounting frame by removably locking the locking protrusions of the wiring device into the locking holes on both sides of the mounting frame, at least the cover provided with the locking protrusions of the wiring device A space is provided inside one end wall to allow the end wall to bend in the direction of the anti-locking protrusion, and the tip of a jig such as a screwdriver is locked on the back surface of the end wall facing the space. The wiring is characterized in that a receiving part is integrally provided to allow the tip of the jig to be inserted into the space through the jig insertion opening formed in the gap between the inner peripheral edge of the central opening of the mounting frame and the cover. Mounting structure for equipment on the mounting frame.