JPH0625985Y2 - Electric appliance mounting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a mounting device for mounting an electric appliance such as a relay or a timer on a mounting rail. It is desired that this type of mounting device has a simple structure itself, is easily attached to and detached from a rail, and has a stable mounting state.

[Conventional technology]

As a conventional mounting device of this type, FIGS.
The one shown in the figure as an example is known. In the figure,
The mounting rail 1 is substantially U-shaped with edges 1a and 1b formed by bending the upper portions of both ends outward. A recess 3 for inserting the mounting rail 1 is provided on the rear surface of the case 2 of the electric appliance, and an engaging groove 4 is formed on one side wall 3a of the recess 3 in detail, and a protrusion 5 is formed. One edge 1a of the mounting rail 1 is engaged with the engaging groove 4, so that the groove side surface of the projection 5 is formed as an inclined guide surface. Further, two elastic bodies 6 arranged so as to sandwich the projection 5 are provided on one side wall 3a in a protruding manner. The other side wall 3b of the recess 3
A movable piece 7 is always attached to the concave portion 3 by being biased by a spring 8 in the direction of the recess 3, that is, in the direction of pressing against the other edge 1b of the mounting rail 1. The tip of the movable piece 7 is tapered so that the movable piece 7 easily slides against the spring 8 when the case 2 is pressed against the mounting rail 1. Locking surface 10 that abuts the edge 1b
It has and. One end of the spring 8 is inserted into a hole provided in the movable piece 7, and the other end of the spring 8 is in contact with the back wall 12 of the insertion groove 11 of the movable piece 7 on the back surface of the case 2. Movable piece 7
A handle 13 is provided on this, and in this case, it also functions as a stopper that restricts the movement of the movable piece 7 in the direction of the recess 3. The movable piece 7 can be moved against the spring 8 by applying a tool such as a screwdriver to the handle 13.

To attach the case 2 of the electric appliance to the mounting rail 1,
First, holding the case 2, the inclined surface 5a of the projection 5 of the recess 3 is slid into the edge portion 1a of the mounting rail 1 so that the engagement groove 4 is engaged with the edge portion 1a. Next, if the opposite side of the case 2 is strongly pressed against the mounting rail 1, the guide surface 9 of the movable piece 7 comes into contact with the edge 1b of the mounting rail 1 and slides to push the movable piece 7 against the spring 8 and move it. When the tapered tip of the piece 7 exceeds the edge 1b of the rail 1, the movable piece 7 is pressed by the action of the spring 8 and protrudes, and the edge 1b of the mounting rail 1 and the locking surface 10 of the movable piece 7 are locked. The case 2 is fixed to the rail 1. In this way, the appliance is mounted on the mounting rail 1. On the contrary, in order to remove the electric instrument from the rail 1, the handle 13 of the movable piece 7 can be pulled away from the mounting rail 1 by pulling it outward against the spring 8.

[Problems to be solved by the device]

However, in the mounting device having the above-described configuration, the movable piece 7 made of a resin molded product is expensive, and the mounting of the movable piece 7 including the spiral spring 8 on the case 2 is troublesome, and it takes a lot of time to assemble. . Therefore, it is conceivable that the movable piece 7 is integrated with the case 2, but in this case, the movable piece 7 must be movable in the direction of the recess 3 and can be moved back and forth. The fulcrum is on the side wall side of the case 2 (see, for example, Japanese Utility Model Laid-Open No. 56-43583). Then, since the width of the mounting rail is determined to be approximately 35 mm, when the size of the case 2 becomes large, the distance from the engaging portion of the movable piece 7 with the mounting rail to the side wall of the case becomes long, so that vibration or shock is applied to the case. When an external force such as the above is applied, the movable piece bends and comes off the mounting rail. Therefore, the conventional device in which the movable piece is integrated with the case has a drawback that it can be applied only to a device in which the width of the case matches the width of the mounting rail.

Therefore, the object of the present invention is to eliminate the above-mentioned drawbacks of the conventional device, to have a simple structure, to obtain a stable device state even in an electric appliance having a relatively large size with respect to the width of the mounting rail, and to provide an inexpensive electric device. An object is to provide a device mounting device.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a fixing claw on one side provided on both side walls of a recess of the case made of a thermoplastic synthetic resin, and a pull tab on the outer surface of the case on the other side, and a side wall side of the case. An electric appliance provided with a movable piece that is integrally movable forward and backward with a fulcrum as a fulcrum is inserted into a substantially U-shaped mounting rail, the fixing claw is engaged with one edge of the mounting rail, and the other edge is with the fixing claw. An attachment device for locking and mounting a movable piece, wherein a flexible belt-like body is provided on a side wall of a case in a moving direction of the movable piece, and the movable piece is joined to the belt-like body to form a case. The movable piece is integrally formed with the engaging surface of the opening formed in the corner corresponding to the edge of the mounting rail on the inner wall of the rear recess of the case when the electric appliance is mounted on the mounting rail. Locking protrusions that prevent bending of the movable piece Characterized in that it has.

[Action]

In the appliance mounting device according to the present invention, the fixing claw provided on one side of the recess on the back of the case of the appliance is engaged with one edge of the mounting rail, and then mounted on the other side of the recess on the back of the case. By pressing the tip of the movable piece against the other edge of the mounting rail, the movable piece slides, and by further pushing the tip of the movable piece over the other edge of the mounting rail, the movable piece returns to its original state. , The tip of the movable piece engages with the edge of the mounting rail to complete the mounting of the electric appliance. At this time, the locking projection of the movable piece engages with the engaging surface of the opening formed in the corner corresponding to the edge of the mounting rail on the inner wall of the recess on the back of the case, and the bending of the movable piece is suppressed. Even if an external force such as vibration or impact is applied to the movable piece, the movable piece does not bend, so that the movable piece does not come off from the mounting rail, and the mounted state of the electric appliance is stable.

〔Example〕

1 to 7 show an embodiment of an electric appliance attaching device according to the present invention. FIG. 1 is a rear view, FIG. 2 is a rear view in a state where it is attached to a mounting rail, and FIG. FIG. 4 is a side view as seen from the direction of arrow P, FIG. 4 is a cross-sectional view of an essential part taken along the line AA of FIG. 1, FIG. Is a front view of a main part, FIG. 6A is a perspective view of a cross section of the main part, and FIG. 7 is an explanatory view showing how a force is applied to the mounting rail at the time of mounting. In the figure, the same parts as those of the conventional device of FIG. 11 are designated by the same reference numerals to describe the differences, and the main ones are that the case 20 is made of a thermoplastic synthetic resin and is movable. The piece 21 is integrally molded with the case 20.

More specifically, referring to the drawings, an engaging groove 4 similar to that of the conventional device shown in FIG. 11 is formed on the side wall 3a on one side of the recess 3 of the case 20 by the fixing claw 22, and one edge of the mounting rail 1 is formed. Department
The fixed claw 22 has an inclined guide surface 22a formed on the groove side surface thereof. The movable piece 21 that can move back and forth is projected from the side wall 3b on the other side of the recess 3, and the movable piece 21 is a flexible strip formed on the rear edge frame 23 from the side wall of the case 20, In this embodiment, it is integral with the top of the Ω-shaped band 24. This movable piece 21 is a fixed claw
An engaging claw 25 that engages with the other edge 1b of the mounting rail 1 on the side opposite to 22, and a pull tab 26 into which the tip of a rod-shaped tool 50 such as a screwdriver can be fitted on the opposite side of the engaging claw 25. The locking guide 25 is provided with an inclined guide surface 25 that is retracted against the flexibility of the Ω-shaped band 24 when the case 20 is pressed against the rail 1.
a and a locking surface 25b for locking the edge 1b of the mounting rail 1 when mounted. Further, the movable piece 21 is provided with locking projections 27 on both sides of the locking claw 25, and when the case 20 is mounted on the mounting rail 1, the engaging surface 28a of the opening 28 formed in the recess 3 on the rear surface of the case 20. It is designed to be locked in.
The opening 28 is provided at the corner of the inner wall of the recess 3 formed on the back surface of the case 20 with which the edge 1b of the mounting rail 1 abuts.
The edge surface of the opening 28 is used as the engagement surface 28a. Movable piece 2
The fixed claw 25 of 0 is provided with a through hole 29 into which a rod-shaped spring 40 described later is inserted between both side surfaces thereof, and the through hole 29 has an opening 29a on the rear surface side. Then, the rear wall 20a of the case 20 has a recess 30 on substantially the same axis as the through holes 29 in the inner walls on both sides thereof.
And seats 31 are provided on both sides of the movable piece 21, and the above-mentioned rod-shaped spring 40 is inserted into the through hole 29 so that both ends are locked in the recess 30 and touch the seat 31. There is.

In the above structure, when this mounting device is pressed from the front side to mount it on the mounting rail 1 as shown in FIG. 7, the contact point between the edge 1b and the inclined guide surface 25a of the movable piece 21,
The force of pushing the movable piece 21 downward as indicated by P ₁ and the force in the direction indicated by force P ₂ act to move. Rotation due to the force P ₂ is blocked by the bar-shaped spring 40, the seat 31 of the case 20 and the through hole 29 of the movable piece 21, and the movable piece is prevented only by the force P _1.
21 can move in the same direction. When the tip of the inclined guide surface 25a of the movable piece 21 crosses over the edge portion 1b of the mounting rail 1, it is locked by the locking surface 25b as shown by the solid line in FIG. The strip 24 bends and its combined force acts on the edge 1b. Fix the claw to the case 20 in this state
When a force in the P ₂ direction with 22 as a fulcrum, that is, a force to remove it is applied, the movable piece 21 is pushed downward in FIG. 6A due to the dimension between both edges 1a and 1b of the mounting rail 1. Has become. That is, the movable projections 21 are pushed apart and the locking projections 27 formed at both ends of the engaging claws 25 have the opening portions of the case 20.
The engagement surface 28a of the movable piece 28 is in a locked state, and the locking claw 25 of the movable piece 21 resists the force in the direction opposite to the force P ₂ direction shown in FIG. The engaging claw 25 of the piece 21 is 6A
In the figure, rotation in the front direction is prevented. Therefore, even if an external force such as vibration or shock is applied to the case 20, the bending of the movable piece 21 is suppressed, so that the movable piece 21 bends and its tip comes off the edge of the mounting rail, so that the case 20 is mounted on the mounting rail. 1 does not fall off, and the mounting device of this embodiment can be adopted regardless of the size of the case of the electric appliance.

Next, to remove the case 20 from the mounting rail 1,
Insert a rod-shaped tool 50 such as a screwdriver into the recess of the pull tab 26
The case 20 may be rotated counterclockwise while moving in the direction indicated by the arrow Q in the figure, and the locking claw 25 may be removed from the edge 1b by this rotation and pushed up. Further, depending on the operation of the rod-shaped tool 50, the pulling handle 26 may have an axial force acting in the direction of arrow F shown in FIG. 4, and if this force is directly applied to the Ω-shaped belt 24, it may be damaged. Therefore, the pull tab 26 has a rear edge frame.
This is prevented by bending until it touches 23. Therefore, even if the movable piece is integrated with the case by clearly sharing the portion that resists the strength against the external force and the portion that flexibly deforms, not only the function but also the reliability is not deteriorated.

Next, FIGS. 8 to 10 show another embodiment of the electric appliance attaching apparatus according to the present invention, which will be described below. FIG. 8 is a front view, FIG. 9 is a side view of FIG.
FIG. 10 is an enlarged sectional perspective view of an essential part, and in the figure, the same parts as those of the embodiment of FIG. This embodiment differs from the embodiment shown in FIG. 1 in that the movable piece 21 is integrated with the side wall of the case 20 with a belt-like body which is formed so as to be swingable by a kerf so as to move forward and backward. That is. More specifically, referring to the drawings, the side wall 20 facing the fixed claw 22 of the case 20.
Two cut grooves 32 facing the front side are provided in b, and a flexible strip-shaped body formed between them, the tongue piece 33 in this embodiment, the movable piece 21 is swingably supported. And the movable piece
Reference numeral 21 has a locking claw 25, a pull tab 26, a locking projection 27, and a through hole 29, as in the embodiment of FIG. 1, and the locking claw 25 has an inclined guide surface 25a and a locking surface 25b. The locking protrusion 27 is the case 20.
When the case is attached to a mounting rail (not shown), the engagement surface 28a of the opening 28 is locked.
Further, a rod-shaped spring 40 is stretched between the movable piece 21 and the case 20 in the same manner as in the embodiment shown in FIG. Therefore, the movable piece 21 and the case 20 are provided between this embodiment and the embodiment of FIG.
Although there is a difference in whether or not the strip that joins and is a tongue, it is an Ω-shaped strip, but the others will have the same functions.

[Effect of device]

As described above, according to the present invention, the fixing claw on one side provided on both side walls of the recess of the case made of a thermoplastic synthetic resin and the pulling tab on the outer surface of the case on the other side and the side wall side of the case An electric appliance provided with a movable piece that is integrally movable forward and backward with a fulcrum as a fulcrum is inserted into a substantially U-shaped mounting rail, the fixing claw is engaged with one edge of the mounting rail, and the other edge is with the fixing claw. An attachment device for locking and mounting a movable piece, wherein a flexible strip-shaped body is provided on a side wall of the case in a moving direction of the movable piece, and the movable piece is coupled to the strip-shaped body to form a case. The movable piece is integrally formed with the engaging surface of the opening formed in the corner corresponding to the edge of the mounting rail on the inner wall of the rear recess of the case when the electric appliance is mounted on the mounting rail. And a locking protrusion to prevent the movable piece from bending. With this configuration, when the electric appliance is mounted on the mounting rail, the locking projection of the movable piece engages with the engaging surface of the opening formed on the inner wall of the back surface of the case. The flexure is suppressed, and even if an external force such as vibration or shock is applied to the electric equipment, the movable piece does not bend and the electric equipment does not fall off the mounting rail, and the electric equipment is mounted on the mounting rail. Since the state can be kept stable, the mounting device of the present invention can be adopted regardless of the size of the case of the electric appliance. In addition, since the movable piece can be easily slid by the band when the electric equipment is mounted on the mounting rail, workability at the time of mounting is good, and the movable piece is integrally formed with the case by the thermoplastic synthetic resin. By doing so, unlike the conventional device, a movable piece and a spring for pressing the movable piece are not required, and the number of parts is small, so that an inexpensive appliance mounting device can be provided.

[Brief description of drawings]

1 to 7 are views showing an embodiment of an electric appliance mounting device according to the present invention. FIG. 1 is a rear view, FIG. 2 is a rear view in a state of being mounted on a mounting rail, and FIG. Figure 1 P
FIG. 4 is a side view seen from the direction of the arrow, FIG. 4 is a sectional view taken along the line AA of FIG. 1, FIG. 5 is a sectional view taken along the line BB of FIG. 1, and FIG. FIG. 6A is a perspective view of a cross section of an essential part, FIG. 7 is a functional explanatory view, FIGS. 8 to 10 are views showing another embodiment of the electric appliance attaching device according to the present invention, and FIG. 8 is a front view, FIG. 9 is a side view as seen from the direction of arrow R in FIG. 8, FIG. 10 is a perspective view of a stepped portion of a main part, and FIGS. 11 and 12 are views showing an example of a conventional electric appliance mounting device. 11 is a vertical sectional view, 12th
The figure is a rear view. 1: Mounting rail, 1a, 1b: Edge, 3: Recess, 3a, 3b: Side wall, 20: Case, 21: Movable piece, 22: Fixed claw, 23: Rear edge frame, 24: Ω-shaped band, 26: pull tab, 27: locking projection, 28: opening, 28a: engaging surface, 29: through hole, 30: recess, 40: spring.

Continuation of the front page (56) References JP-A-55-150520 (JP, A) Actually open 57-92323 (JP, U) Actually open 59-91624 (JP, U) Actual public Sho-58-7939 (JP , Y2)

Claims (2)

[Scope of utility model registration request] 1. A casing made of a thermoplastic synthetic resin, which has fixing claws on one side provided on both side walls of a recess on the back side of the casing and pulling handles on the outside of the casing on the other side, and is integrally movable back and forth with the side wall of the casing as a fulcrum An electric appliance including a movable piece is inserted into a substantially U-shaped mounting rail, the fixing claw is engaged with one edge of the mounting rail, and the movable piece is locked with the other edge. An attachment device to be mounted, wherein a flexible strip-shaped body is provided on a side wall of the case in a moving direction of the movable piece, and the movable piece is coupled to the strip-shaped body to be integrally formed with the case. The piece engages with an engaging surface of an opening formed in a corner corresponding to an edge of the mounting rail on the inner wall of the rear recess of the case when the electric appliance is mounted on the mounting rail, and the piece of the movable piece moves. A battery characterized by having a locking projection for suppressing the bending Instrument mounting device. 2. The mounting device according to claim 1 of the utility model registration, wherein both ends are locked to the inner wall on the back side of the case and the central part engages behind the movable piece to promote a restoring force. At the same time, there is provided a device for attaching an electric appliance, comprising a rod-shaped spring which is brought into contact with a back surface of the case and regulates a rotation direction.