JPH10283898A - Power supply clip device for fuse-free breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply clip device for fuse-free breaker, which can preventany screw from missing and allows simple performance of connecting works for the body side terminals on a body case with the power cord side terminals. SOLUTION: A socket 9 is fitted on the head 7a of a screw 7 furnished on the inner bottom 3a of a long groove 3 provided in a body case 2 and is secured to inside the groove 3 by a slipoff preventive subassembly 13 consisting of an insulative member 10, a shaft 11, and a compressive spring 12 and a holding member 14 to hold the slipoff preventive sub-assembly 13, wherein the sub-assembly 13 is previously attached to the body case 2, and the holding member 14 is attached to the body case 2, and at the same time, mounting of the sub-assembly 13 in the groove 3 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power clip device for a fuse-free circuit breaker.

[0002]

2. Description of the Related Art In general, a fuse-free circuit breaker completely and automatically shuts off an overcurrent or a short-circuit current of an indoor wiring to reliably protect the indoor wiring. The structure of the fuse-free circuit breaker is, as shown in FIG.
0, a box-shaped main body case 103 made of an insulating material accommodating the arc extinguishing device 101 and the drawer device 102; a handle 104 provided on the upper surface of the main body case 103 to open and close the opening / closing mechanism 100; The terminal provided on the inner bottom 105a of the long groove 105 formed on one side surface and provided at the end of the power supply side cord is connected to the main body case 103.
A screw 106 and a terminal retainer 107 for making an electrical connection with an internal electric circuit, and a terminal provided at an inner bottom 108a of a long groove 108 formed on the other side surface of the main body case 103 and provided at an end of the load-side cord. Screw 109 and terminal retainer 1 for making electrical connection with an electric circuit in main body case 103.
It consists of ten.

In the above fuse-free circuit breaker, when the terminal provided at the end of the power supply side cord is fixed to the inner bottom 105a of the long groove 105 of the main body case 103, the screw 106 must be removed from the inner bottom 105a of the long groove 105 with a screwdriver. After that, the screw 106 and the terminal retainer 107 are used to screw into the inner bottom 105a of the long groove 105 of the main body case 103.

[0004]

In the prior art described above, when fixing the terminal provided at the end of the power cord on the inner bottom of the long groove of the main body case, the screw is removed from the bottom of the long groove of the main body case. There is a problem that the screw that has been dropped is accidentally dropped and lost. Also, if the outer diameter of the terminal provided at the end of the power supply side cord is larger than the groove width of the long groove of the main body case, the terminal cannot be attached to the inner bottom of the long groove of the main body case and the end of the power supply side cord If the diameter of the mounting hole of the terminal provided in the case is smaller than the outer diameter of the screw attached to the inner bottom of the long groove of the main body case, the screw cannot be inserted into the terminal, and the terminal will not fit in the bottom of the long groove of the main body case. There was a problem that it could not be attached to. Furthermore, since the long groove of the main body case has a narrow groove width, it is difficult to perform a screw fastening operation by a driver, so that there is a problem that it takes time to attach the power cord to the main body case.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to prevent screws from being lost, to provide an outer diameter of a terminal provided at an end of a power supply side cord, and to attach the terminal. Even if the hole diameter is different from the groove width of the long groove of the main body case and the outer diameter of the screw attached to the inner bottom of the long groove, the electric connection work with the terminal portion on the inner bottom of the long groove of the main body case can be efficiently finished. And a power supply clip device for a fuse-free circuit breaker.

[0006]

The object of the present invention is to provide a fuse-free circuit breaker in which a long groove is provided on a side surface of a main body case, and a screw for fixing a terminal provided at an end of a power supply-side cord is provided in the bottom of the long groove. An attachment body which is fitted into the long groove and is press-fitted into the head of the screw, and furthermore, is formed integrally with the main body case so as to protrude outward from the side surface of the main body case from the long groove for mounting the terminal. A socket made of a conductive material formed as described above, an insulating member fitted to the upper portion of the socket, a shaft body movably fitted to the insulating member, and a flange provided between the shaft body and the insulating member. And a retaining member set made of a compression spring for pressing the socket against the head of the screw via the insulating member, and a holding member detachably attached to the main body case and holding the shaft body And Then, when attaching the holding member to the main body case, in a state where the set of retaining portions is previously attached to the holding member, the set of retaining portions can be attached in the long groove of the main body case. This is achieved by:

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 5, the fuse-free circuit breaker 1 has a box-shaped main body case 2 made of an insulating material. The inside of the main body case 2 has almost the same structure as the conventional example shown in FIG. On the side surface 2a of the main body case 2,
A plurality of long grooves 3 are formed. A body-side terminal 4 that is electrically connected to an electric component in the body case 2 is fixed to the inner bottom 3 a of the long groove 3. The main body side terminal 4
A screw 7 and a terminal retainer 8 for fixing a terminal 6 (hereinafter, referred to as a power cord side terminal 6) provided at an end of the power cord 5 are provided.

A socket 9 formed of a conductive material such as copper and serving as a power receiving unit is press-fitted into the head 7a of the screw 7 in a detachable manner. On the socket 9, as shown in FIG.
A set 13 of retaining members including the insulating member 10, the shaft body 11, and the compression spring 12 is mounted. The retaining unit 13 is
Holding member 14 detachably attached to main body case 2
Is attached using the contact member 15. Insulation member 1
Numeral 0 is made of a synthetic resin and is fitted on the upper part of the socket 9. In the upper part of the insulating member 10, there is provided a fitting hole 10a into which the shaft body 11 is fitted so as to be vertically movable. A flange 11a is integrally formed on the upper part of the shaft body 11. Shaft 1
A compression spring 12 is provided between the one flange 11a and the upper surface of the insulating member 10.

The holding member 14 has a U-shape that covers the upper surface of the main body case 2 and the right and left sides of the main body case 2.
It is made of synthetic resin. Between the upper part 14a of the holding member 14 and the upper surface of the main body case 2, a contact member 15 made of synthetic resin is provided. As shown in FIG. 2, a first elastic member 16 made of rubber is provided between one side portion 14b of the holding member 14 and the main body case 2. The contact member 15 and the first elastic member 16 are fixed to the holding member 14 side with an adhesive. As shown in FIG. 2, a wedge member 17 is provided between the other side portion 14 c of the holding member 14 and the main body case 2.
And a second elastic member 18. The second elastic member contacting the main body case 2 is a support member 1 made of a spring steel plate.
9 is fixed by an adhesive. The support member 19 is fixed to the upper part 14 a of the holding member 14. The wedge member 17 moves the wedge member 17 up and down by rotating a plurality of thumb screws 20 disposed on the upper surface of the holding member 14 to the left and right. It is configured such that the wedge effect that occurs between them can be adjusted.

As shown in FIG. 4, the socket 9 has a mounting member 9a protruding from the long groove 3 to the outside of the main body case 2.
Are integrally formed. A screw hole 9c for fixing the power cord 5 with the mounting screw 21 is formed in the mounting body 9a. At the lower end of the shaft body 11, a retaining ring 22 for preventing the shaft body 11 from coming off from the insulating member 10 is provided. A screw portion 11b is formed on the outer periphery of the upper end of the shaft body 11,
A screw hole portion 1 in which the screw portion 11b is formed in the contact member 15
5a. When the retaining member 14 is attached to the main body case 2 with the retaining portion set 13 inserted into the long groove 3, the insulating member 10 is pushed downward by the compression spring 12, and the socket 9 is attached to the head 7 a of the screw 7. It is designed to be crimped.

In the above configuration, the power cord side terminal 6
Is connected to the main body side terminal 4 of the main body case 2 in the following manner.

(1) First, a set 13 of retaining members comprising an insulating member 10, a shaft 11 and a compression spring 12 is inserted into a screw hole 15 a of a member 15 by applying a threaded portion 11 b of the shaft 11.
To the holding member 14 in advance.

(2) Next, the socket 9 to which the power cord side terminal 6 is attached is fitted to the head 7a of the screw 7 attached to the inner bottom 3a of the long groove 3.

(3) Further, the retaining portion set 13 is
The holding member 14 is attached to the main body case while being inserted into the inside.

(4) Finally, by rotating the thumb screw 20 to move the wedge member 17 up and down, the main body case 2
The holding member 14 is fixed to the main body case 2 by increasing the wedge effect between the holding member 14 and the other side portion 14c of the holding member 14.

As described above, in this embodiment, the socket 9 can be mounted in the long groove 3 at the same time as the mounting member 14 is mounted on the main body case 2 without using a screwdriver. If the power cord side terminal 6 is previously attached to the attachment 9a of the socket 9 and the socket 9 is fitted to the head 7a of the screw 7 provided on the inner bottom 3a of the long groove, the screw 7 In addition, since the mounting screw 17 is not removed when the power cord side terminal 6 and the main body side terminal 4 are connected, loss of the screw 7 and the mounting screw 17 can be prevented.

Even if the outer dimensions of the main body case 2 are different,
By rotating the thumbscrew 20 and moving the position of the wedge member 17 in the vertical direction, the holding member 14 can be firmly attached to the main body case 2.
It is not necessary to prepare a plurality of holding members 14 in accordance with the difference in the outer dimensions of the main case 2, and one holding member 14 can cope with one having different outer dimensions of the main body case 2, which is economic.

In the present embodiment, the holding member 14 is made of a synthetic resin, but is not limited to this. The holding member 14 may be made of a spring steel plate.

[0020]

As described above, according to the present invention, the socket is fitted to the screw without removing the screw for mounting the terminal mounted in the long groove of the main body case, and the socket is insulated by the insulating member. It can be fixed in a long groove by a retaining member set including a shaft body and a compression spring and a holding member that presses the retaining member set.
A power clip device for a fuse-free circuit breaker has been obtained in which a retaining member set is attached to a retaining member in advance so that the retaining member can be attached to the main case at the same time as the retaining member can be mounted in the long groove.

[Brief description of the drawings]

FIG. 1 is a top view of a fuse-free circuit breaker showing one embodiment of the present invention.

FIG. 2 is a side view of a fuse-free circuit breaker showing one embodiment of the present invention.

FIG. 3 is an enlarged longitudinal sectional view taken along the line AA of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view taken along line BB of FIG. 1;

FIG. 5 shows one embodiment of the present invention, and is an explanatory view of a state before a holding member is mounted on a fuse-free circuit breaker.

FIG. 6 is a schematic explanatory view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuse-free circuit breaker 2 Main body case 3 Long groove 3a Inner bottom 4 Main body terminal 5 Power cord 6 Power cord side terminal 7 Screw 8 Terminal press 9 Socket 10 Insulation member 11 Shaft 12 Compression spring 13 Retainer set 14 Holding member 15 Backing member 16 First elastic member 17 Wedge member 18 Second elastic member 19 Support member 20 Thumb screw 21 Mounting screw

Claims (1)

[Claims] 1. A fuse-free circuit breaker provided with a long groove on a side surface of a main body case, and a screw provided on a bottom of the long groove to fix a terminal provided at an end of a power supply-side cord. And a socket made of a conductive material integrally formed with a mounting member that is press-fitted into the head of the screw and that protrudes outward from the side surface of the main body case from the long groove to mount the terminal. An insulating member fitted on the upper portion of the socket, a shaft body fitted vertically movably on the insulating member, and a flange provided on the shaft body and provided between the insulating member, and the insulating member. A main body case, comprising: a set of retaining portions formed of a compression spring for pressing the socket against the head of the screw via the head; and a holding member detachably attached to the main body case and holding the shaft body. The above A fuse-free structure in which the retaining member set is attached to the holding member in advance when the holding member is attached, and the retaining member set is attachable to the long groove of the main body case. Power supply clip device for circuit breakers.