JPH0550160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mounting device for mounting electrical appliances such as sockets and electromagnetic contactors mainly used in plug-in type relays and timers to a mounting rail.

[Conventional technology]

As a conventional mounting device of this kind, for example, the first
What is shown in FIG. 2 and FIG. 2 is known. In the figure, a mounting rail 1 to which electrical appliances and sockets are mounted is formed by bending both ends of a pan-shaped cross section outward, and is formed into a substantially U-shape having edges 1a and 1b. Reference numeral 2 denotes an insulating case for an electric appliance or a socket having an opening on the back side, and this insulating case 2 has a base 3 made of synthetic resin that closes the opening. A recess 4 for inserting the mounting rail 1 is provided on the back surface of the base 3, and an engagement groove 5 is formed in one side wall 4a of the recess 4 by two fixing claws 6. One edge 1a of the mounting rail 1 is adapted to engage with this engagement groove 5, and for this purpose, the groove side surface of the fixing claw 6 is formed as an inclined guide surface 6a. On the other side wall 4b of the recess 4, a slider 7 supported by the base 3 is always urged by a spring 8 in the direction of the recess 4, that is, in the direction of pressing against the other edge 1b of the mounting rail 1, and protrudes from the surface of the other side wall 4b. It is installed as shown. The slider 7 has a tapered tip and an edge 1 of the mounting rail 1.
a guide surface 9 that easily slides the slider 7 against the spring 8 when the base 3 is pressed against the mounting rail 1 by engaging the engagement groove 5; and the edge of the mounting rail 1. 1b. One end of the spring 8 is inserted into a hole provided in the slider 7, and the other end is in contact with the edge frame 3a of the base 3. The slider 7 is provided with a handle 11, and the handle 11 is provided with an operation hole 11a through which a tool such as a screwdriver can be attached. The slider 7 is also provided with a protrusion 12 that engages with a stopper 3b provided on the back surface of the base in order to restrict movement in the direction of the recess 4.

To attach the insulating case 2 to the mounting rail 1, first hold the case 2 and slide the slope 6a of the protrusion 6 of the recess 4 of the base 3 onto the edge 1a of the mounting rail 1, and insert the edge 1a into the engagement groove 5. engage. Next, if the opposite side of the case 2 is strongly pressed against the mounting rail 1, the slider 7 will be attached to the edge 1b of the mounting rail 1.
The slider 7 is pushed against the spring 8 by sliding in contact with the guide surface 9 of the slider 7, and when the tapered tip of the slider 7 crosses the edge 1b of the rail 1, the slider 7
is pressed and protrudes by the action of the spring 8, and the edge 1b of the mounting rail 1 and the locking surface 10 of the slider 7 are locked, and the insulating case 2 is fixed to the rail 1.
Conversely, in order to remove the electrical appliance from the mounting rail 1, the pull 11 of the slider 7 is pulled outward against the spring 8, and the appliance can be easily removed from the mounting rail 1.

[Problem to be solved by the invention]

However, the mounting device with this configuration is
Since it is separate from the base 3 and requires the spring 8, the number of parts is large and the slider 7 is expensive.
Another disadvantage was that mounting the spring 8, including the spring 8, on the base 3 was troublesome and required a lot of time to assemble.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting device for electrical appliances that is simple in structure, provides a stable mounting condition, and is inexpensive, by eliminating the drawbacks of the conventional devices.

[Means to solve the problem]

In order to achieve the above object, the present invention has a movable recess having a fixed claw on one side wall and a handle on the outside of the base on the other side wall of a recess on the back side of a synthetic resin base that closes the opening on the back side of an insulating case. the insulating case is attached by inserting the recess into the mounting rail and locking the fixed claw on one edge of the mounting rail and the locking claw of the movable piece on the other edge; In the device, the movable piece is
The support arm has a vertical part extending perpendicularly to the sliding direction of the movable piece at a position close to the locking claw, and is connected to two support arms implanted in the base through this vertical part. The part between the locking pawl and the handle is slidably disposed between the split grooves formed by cutting out the base, and engages with the side edge of the handle of the movable piece, so that the movable piece The insulating case is characterized in that a stopper is provided on the insulating case to restrict the deflection of the insulating case.

[Effect]

The fixed claws and movable pieces that are locked to the mounting rail are integrally formed on the base, which is separated from the insulating case, reducing the number of parts and requiring fewer assembly steps. This makes it possible to install rails.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings. 3 to 7 show an embodiment of the present invention, in which FIG. 3 is a longitudinal sectional view, FIG. 4 is a front view, and FIG. 5 is a front view.
The figure is a longitudinal sectional view showing the installation process on the mounting rail.
FIG. 6 is an exploded perspective view, and FIG. 7 is a perspective view showing an assembled state. In the figure, parts that are the same as those of the conventional device shown in FIG. It is integrally molded into the In detail, the case 2 and the base 3 are separated as shown in FIG. 6, and are integrated by pushing the hole 2b of the case 2 into the protrusion 3c of the base 3. An engagement groove 5 similar to that of the conventional device shown in FIG. 1 is formed in one side wall 4a of the recess 4 of the base 3 by a fixing claw 6, and the groove side of the fixing claw 6 serves as an inclined guide surface 6a.
One edge 1a of the mounting rail 1 can be engaged with the engagement groove 5. An L-shaped movable piece 17 that can be engaged with the other edge 1b of the mounting rail 1 is formed on the other side wall 4b of the recess 4. The tips of the vertical parts 12a and 12b of the movable piece 17 are supported between two support arms 13a and 13b that protrude toward the front side of the base 3 and are arranged in parallel,
It is arranged between grooves 14 formed by cutting out. The movable piece 17 has a locking pawl 18 on the side opposite to the fixed pawl 6 that engages with the other edge 1b of the mounting rail 1, and the tip of a rod-shaped tool such as a screwdriver is inserted into the opposite side of the locking pawl 18. The locking pawl 18 is provided with an inclined guide surface 21 that retracts against the flexibility of the movable piece 17 itself when the base 3 is attached to the rail 1.
When this inclined guide surface 21 passes over the other edge 1b of the mounting rail 1, a locking surface 22 that engages with this edge 1b is provided and is tapered.
The inside of the handle 20 engages with a stopper 2a provided on the side edge of the handle of the case 2 to restrict the amount of protrusion of the movable piece 17 toward the mounting rail 1 side, and the stopper 2a and the upper side of the movable piece 17 The movable piece 17 moves upward due to contact with the case 2, that is, when the locking claw 18 and the other edge 1b of the mounting rail 1 come into contact with each other when the case 2 is attached to the mounting rail 3, the movable piece 17 moves upward. Prevents bending. Furthermore, movable piece 1
A cut groove 17a is provided at the center of the vertical portion of the movable piece 17, but this is for setting the spring force of the movable piece 17 to a predetermined strength, and may be omitted as long as the predetermined spring force is obtained. . As shown in FIG.
A protruding portion 2d having a diameter c is formed, and a convex portion 20a of the pull handle 20 engages with a stepped portion 2c of the protruding portion 2d, thereby suppressing downward bending of the movable piece 17. In addition, in order to insert the handle 20 of the movable piece 17 between the protrusions 2d when integrating the case 2 and the base 3, the puller 20 is passed between the protrusions 2d by twisting and bending the movable piece 17. This is done by

Next, to attach the case 2 integrated with the base 3 to the mounting rail 1, as in the conventional device shown in FIG. One edge 1 of rail 1
a to engage the engagement groove 5 with the mounting rail 1. Next, when the inclined guide surface 21 of the movable piece 17 is brought into contact with the mounting rail 1 and the other edge 1b and the case 2 is pressed, the movable piece 17 resists the return force of the movable piece 17 itself and moves as shown by the chain line in FIG. As shown, the edge 1b and the locking surface 22 are retracted, and the movable piece 1
The installation is completed when 7 returns to its original state. For removal, the transaction is completed by hooking a rod-shaped tool such as a screwdriver into the operation hole 19 and pulling the case 2 while bending the movable piece 17 outward.

〔Effect of the invention〕

According to this invention, a movable piece made of flexible synthetic resin that engages with the mounting rail is integrally molded with the base, and furthermore, the movable piece is molded integrally with the base to improve stability in the installed state and workability during installation. By providing a stopper to suppress the amount of protrusion and deflection between the case and the case, we have created a mounting device for electrical appliances that reduces the number of parts and cost without reducing the stability during mounting and the workability of mounting and dismounting. Obtainable.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing an example of a conventional mounting device for electrical appliances. Figure 1 is a vertical sectional view of the main part, Figure 2 is a rear view, and Figures 3 to 7 are views of this device. 3 is a longitudinal sectional view of the main part thereof, FIG. 4 is a front view thereof, and FIG. 5 is a longitudinal sectional view of the main part showing the installation process, FIG. 6 is an exploded perspective view thereof, and FIG. 7 is a perspective view showing its assembled state. 1... Mounting rail, 1a, 1b... Edge, 2
...Case, 2a...Stopper, 3...Base,
4... Recess, 4a, 4b... Side wall, 5... Engagement groove, 6... Fixed claw, 13a, 13b... Support arm,
14... Division groove, 17... Movable piece, 18... Locking claw, 20... Pull.

Claims (1)

[Claims] 1. A recess on the back side of the synthetic resin base that closes the opening on the back side of the insulating case. A fixed claw is provided on one side of both walls, and a movable piece having a handle on the outside of the base is provided on the other side wall, and the recess is attached to a mounting rail. In the mounting device for attaching the insulating case by inserting the fixed claw into one edge of the mounting rail and locking the locking claw of the movable piece to the other edge, the movable piece is inserted into the mounting rail. It has a vertical part that extends perpendicularly to the sliding direction of the movable piece at a position close to the retaining claw, and is connected to the two support arms implanted in the base through this vertical part, and the support arms are used as a fulcrum. The part between the locking pawl and the handle is slidably disposed between the split grooves formed by cutting out the base, and engages with the side edge of the handle of the movable piece. A mounting device for an electrical appliance, characterized in that a stopper for regulating deflection is provided on the insulating case.