JPS6352418B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for mounting a safety breaker on a distribution board or switchboard.

Conventionally, when installing a safety breaker, as shown in FIG. Mounting screw 3
It is known that a and 3b are screwed together and attached. However, in this installation, the screw holes in the mounting plate 4 and the mounting screws 3 during assembly are required.
There was a drawback that it took time to insert parts a and 3b and tighten the screws. In addition, in order to eliminate the above-mentioned drawbacks, as shown in FIG. 2, a recess 8 is provided in the bottom surface 6 of the safety breaker 1 into which a rod-shaped mounting plate 7 having a gutter-shaped cross section is fitted, and one inner wall 9 of the recess 8 facing It is also known that a slider 12 is mounted on the other inner wall 10 so as to protrude inwardly, and is constantly pressed inward by a spring 11, and is attached to the mounting plate 9 through this recess 8. However, this mounting means has the disadvantage that the number of parts increases and the price of the safety breaker 1 increases.

The present invention has been made in view of these points, and it is an object of the present invention to provide a mounting tool that has an inexpensive structure, simplifies the installation of a safety breaker, and has a strong and reliable structure for installation.

The present invention will be described below with reference to the embodiments shown in FIGS. 3 to 5. Reference numeral 1 denotes a well-known molded case-shaped safety breaker, with a handle 1c protruding from the center and terminals 1a and 1b provided at both ends. There is. 1d and 1e are recesses having mounting holes 2a and 2b, and these mounting holes 2a and 2b are used when mounting using mounting screws 3a and 3b as shown in FIG. Reference numeral 7 denotes a gutter-shaped mounting plate, which is arranged in the form of a crosspiece on a distribution board or switchboard. Reference numeral 20 denotes a fixture for fixing the safety breaker 1 to the mounting plate 7, which is integrally molded from plastic and has the following shape. That is, the base portion 21,
Extending portions 22 and 23 extend left and right from the base portion 21 and have an air space A between them and the bottom 1f of the safety breaker 1. is standing up, and
Adjust the spacing to the overall length B of the safety breaker 1, align the disposed holding arms 24, 25, and the tips of the holding arms 24, 25 to the height of the recesses 1d, 1e of the safety breaker 1, and set the width C to the safety Bent parts 26 and 27 are bent inward to fit into the widths of the recesses 1d and 1e of the breaker 1, and a removal knob 28 projects diagonally forward on the opposite side of the bent part 26 at the tip of one holding arm 24. , the back surface 2 of the base portion 21
1b are formed so as to face each other in accordance with the width D of the mounting plate 7, and one side has a band-shaped protrusion 29 with the tip bent inward, and the other side is also band-shaped and the base part 21 is moved from the surface of the back surface 21b. is low, and
It is composed of a thin band-shaped protrusion 30 that rises from the thin-walled portion 21c and has a chevron-shaped protrusion at its inner tip.

Note that the thin band-shaped portion provided with the protrusion 30 is formed to be elastically deformable.

As configured as above, the attachment 20 for the safety breaker 1 has the front surface 21a of the base portion 21 of the attachment 20 in contact with the bottom 1f of the safety breaker 1.
The safety breaker 1 is held by the holding arms 24, 25 and the bent portions 26, 27, and the extending portions 22, 23 have a distance A from the front surface 21a of the base portion 21, so the bent portions 26, 27 When fitting into the recesses 1d and 1e of the safety breaker 1, the extending portion 2
The dimensions of the safety breaker 1 and the front surface 21a of the base part 21 of the fixture 20 are adjusted so that the parts 2 and 23 are curved and fit together.
The distance between the bending portions 26 and 27 is determined. Therefore, the mounting fixture 20 for the safety breaker 1
It can be installed without rattling. In addition, the mounting tool 20 for the mounting plate 7 is constructed so that the mounting plate 7 is sandwiched between the protrusions 29 and 30, and the protrusions 30 are flexible, so that the mounting plate 7 can be mounted without wobbling. A fixture 20 is fixed to 7. Therefore, the safety breaker 1 is securely fixed to the mounting plate 7 via the fixture 20. In addition, when removing the safety breaker 1 fixed to the mounting plate 7 by the mounting tool 20 as described above, hold the release knob 28 and push the holding arm 24 outward, and then open the bent part 26 from the safety breaker. The safety breaker 1 is removed from the fixture 20 by removing it from the recess 1d of the safety breaker 1. The mounting tool 20 has a thin wall portion 21c
It is removed from the mounting plate 7 by bending it and removing the protrusion 30.

As described above, if the mounting tool 20 of the present invention is used, the safety breaker 1 can be mounted with one touch, so the workability of the mounting is good and the safety breaker 1 can be fixed securely. Moreover, this fixture 20 is made of a single molded product and can be provided at low cost. Furthermore, it has the advantage that it can be applied to a safety breaker without requiring any processing or addition of other parts.

[Brief explanation of drawings]

FIGS. 1 and 2 are side views of a conventional device, and FIGS. 3 to 5 show an embodiment of the present invention.
3 is a plan view, FIG. 4 is a side view, and FIG. 5 is an exploded perspective view. In the figure, 1 is a safety breaker, 7 is a mounting plate, 20 is a fixture, 26 and 27 are bent parts, 2
9 and 30 are protrusions. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A safety breaker with a protruding handle in the center, terminals arranged at both ends, and a recessed portion with a through hole for a mounting screw near the terminal, formed in a gutter shape, A mounting plate provided across the back surface, to which the safety breaker is fixed, a base part that is located between the safety breaker and the mounting plate and abuts the top surface of the mounting plate. 21 and the bottom of the safety breaker, which extends from the base part 21 to both left and right sides when looking at the base part 21 from the side.
extending portions 22 and 23 are formed with two sides, and extend from the tips of each of the extending portions 22 and 23 to face each other toward the front surface of the safety breaker. The holding arms 24 and 25 are made to have almost the same dimensions, and the tips of the holding arms 24 and 25 are fitted so that they match the height of the recess of the safety breaker, and the width C matches the width of the recess. bent portions 26 and 27 that are bent inward to fit together, and a release knob portion 28 that protrudes toward the opposite side of the bent portion 26 or 27 at the tip of one or both of the holding arms 24 and 25;
A protrusion 29 is formed to face the back surface 21b of the base part 21 according to the width D of the mounting plate, and one has a shape whose tip is bent inward, and the other has a protrusion 29 at the end of the base part 21. A thin wall portion 21c is provided in the portion,
A safety breaker fixture characterized in that a protrusion 30 that hangs down from the thin wall portion 21c and has a chevron-shaped protrusion at its inner tip is integrally molded from a synthetic resin material.