JP2537053Y2 - Circuit breaker - Google Patents

Description

[Detailed description of the invention]

[0001]

This devise [relates to the circuit breaker having an internal accessory, improvement of the drawer of the lead line of the internal accessory, more particularly to prevent Ri flying leads.

[0002]

BACKGROUND OF THE INVENTION Figures 4 and 5 show a conventional circuit breaker having an internal accessory, FIG. 4 is a perspective view of a circuit breaker showing by omitting the leads of the internal accessory, FIG. 5 is read It is a perspective view of the circuit breaker which shows the state which pulled out the line.

In FIG. 1, reference numeral 1 denotes a circuit breaker, 2 denotes a case of a circuit breaker, and this case 2 comprises a base 201 and a cover 202. Reference numeral 3 denotes an internal accessory device housed in the case 2. The internal accessory device performs the same operation as the main switching contact of the circuit breaker, turns on an external lamp or the like, and performs on / off display. Auxiliary switch, alarm switch that activates an alarm lamp, buzzer, etc. when the circuit breaker trips, a voltage trip device that remotely trips the circuit breaker by applying an external voltage, and the voltage of the main circuit falls below a predetermined value. Then, there is an undervoltage trip device or the like that trips the circuit breaker, and these devices are housed in the circuit breaker case 1 alone or in an appropriate combination.

[0004] Reference numeral 4 denotes a lead wire having one end connected to the internal attachment device 3 by appropriate means such as soldering or screwing, and the other end connected to an external device (not shown). Window to be drawn out from 2; 204 is the base 20
A groove formed in the side wall of the base 201 extends from the window 203 toward the power supply side or the load side as required, and opens at the end 205 of the base 201.

The lead wire 4 drawn out from the internal attachment device 3 through the window 203 is housed in the groove 204, drawn out to the power supply side or the load side, and finally connected to external equipment. Reference numeral 5 denotes an adhesive paper for holding the lead wire 4 in the groove 204.

[0006]

The conventional circuit breaker 1 having the internal auxiliary device 3 is constructed as described above, and the lead wire 4 of the internal auxiliary device 3 is connected to the base 2 of the circuit breaker case 2.
01 formed on the side wall of the power supply side or the load side
04, and is held in the groove 204 by the adhesive paper 5. However, if the adhesive paper 5 is insufficiently adhered or its adhesive strength is reduced, the lead wire 4 is inserted into the groove 20.
4, the lead wire 4 that has floated is
The lead wires 4 cross each other,
When a plurality of circuit breakers 1 are juxtaposed and arranged side by side, there is a problem that the workability of the mounting work is poor.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a groove formed in a side wall of a base of a circuit breaker case is provided in order to prevent a lead wire of an internal accessory device from being lifted out of the circuit breaker case. Extending to the bottom of the base, forming a bottom groove toward the power supply side or the load side in communication with the groove along the bottom side edge of the base, and accommodating a lead wire coming out of the groove in the side wall in the bottom groove And the flexibility of the base
The lead wire is formed integrally with the bottom lid via a thin portion and is held in the bottom groove by a groove cover locked in the bottom groove.

[0008]

In the circuit breaker constructed as described above, the lead wire of the internal accessory device is drawn out into the groove on the side wall of the base of the circuit breaker case, and then immediately drawn into the bottom groove formed on the bottom surface of the base. Since the bottom cover is firmly held in the bottom groove by the groove cover closing the bottom groove, the floating of the lead wire from the groove in the base side wall is prevented or suppressed.

[0009]

EXAMPLES Hereinafter, a description will be given of an embodiment of the present invention for FIGS. FIG. 1 is a bottom perspective view of a main part of a circuit breaker according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG.
FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1, and the same parts as those in the related art are denoted by the same reference numerals and description thereof will be omitted.

In FIG. 1, reference numeral 206 denotes a bottom cover for closing the bottom surface 207 of the base 201, and reference numeral 204A denotes a groove corresponding to the conventional 204. The groove 204A is different from the conventional one. It extends from the window 203 to the bottom of the base 201 as it is. Reference numeral 208 denotes a bottom groove formed along the side edge of the bottom surface 207 of the base 201 so as to communicate with the groove 204 </ b> A toward the load side, and opened to the end 205 of the base 201.

Reference numeral 209 denotes a groove cover for closing the bottom groove 208. The groove cover 209 extends through a thin portion 219 extending in the longitudinal direction.
It is integrally connected to the lid 206. To groove cover 209
The appropriate number of claws 211 that have just come up
Are formed in an integral structure. A projection 211A is formed outward at the tip of each claw 211. On the other hand, the inner side wall surface of the bottom groove 208 projections 211A of the claw 211
A recess 213 is formed for snap-fitting with the recess.

Thus, the lead wire 4 of the internal accessory device is
After being drawn out of the window 203 to the outside, it is housed in the groove 204A, and then drawn out through the bottom groove 208 to the load side. In this state , the groove cover is used until the projection 211A of the pawl 211 snaps into the recess 213 due to the elasticity of the pawl 211.
209 is pressed against the base 201. In addition, FIG.
The imaginary line is a shape in which the groove cover 209 is removed from the bottom groove 208.
State.

As described above, when the groove cover 209 is locked in the bottom groove 208, the lead wire 4 becomes as shown in FIG.
First , the groove cover 209 firmly holds the lead wire 4 in the bottom groove 208 to prevent or at least suppress the lifting of the lead wire 4 from the groove 204A. Further, since the lead wire 4 immediately enters the bottom groove 208 immediately after exiting the groove 204A, this part does not hinder the close contact and arrangement of the circuit breaker 1 at all. Further, the groove cover 209 and the bottom cover 206
The number of parts does not increase because it is formed physically
No.

In the above embodiment, the elasticity of the claw 211 itself is
Snap fits into the recess 213
The width dimension of the groove cover 209 between the claws 211
The claw 211 receives a reaction force from the lead wire 4 accommodated in between.
If it is selected to be slightly smaller as shown in FIG.
1 becomes more secure. In the above embodiment,
The case where the lead wire 4 is led out to the load side has been described,
Side groove, the bottom groove 208 is
It may be formed toward the side.

[0015]

[Effect of the Invention] As described above, the circuit according to the present invention is provided.
The breaker has a groove formed on the side wall of the base of the case.
Extend to the bottom and along the bottom edge of the base
To the power supply side or load side by communicating with the groove on the side wall.
A groove is formed and the lead wire protruding from the groove on the side wall of the base is connected to the bottom portion.
Groove cover that passes through the groove and locks this bottom groove
To secure the leads in the bottom groove.
The lead wire in the groove on the side wall of the base
It will not lift, and beyond that the lead wire
It does n’t get stuck in the bottom groove and stick out on the side wall of the base
The lead wire hinders the juxtaposition of circuit breakers
And the workability of such side-by-side installation work is improved.
Fruit is obtained. In addition, the groove cover is based on the thin part
Because it is formed integrally with the bottom lid with elasticity,
An increase in the number can be prevented.

[Brief description of the drawings]

FIG. 1 is a bottom perspective view of a main part of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an enlarged sectional view taken along a line III-III in FIG. 1;

FIG. 4 shows a conventional circuit breaker with internal accessories,
FIG. 4 is a perspective view showing the internal attachment device with lead wires omitted.
You.

FIG. 5 is a circuit diagram of the circuit shown in FIG.
FIG. 3 is a perspective view of a breaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Breaker case 201 Base 204A groove 205 End of base 206 Bottom cover 207 Base bottom 208 Bottom groove 209 Groove cover 219 Thin part 3 Internal attachment device 4 Lead wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Fujii 1-8 Midoricho, Fukuyama-shi Fukuyama Works, Mitsubishi Electric Corporation (56) References Japanese Utility Model sho 59-85553 (JP, U) Japanese Utility Model Sho 57-55153 (JP, U) Japanese Kaihei 2-18247 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A circuit breaker having an internal accessory device, wherein a lead wire of the internal accessory device is drawn into a groove formed in a base side wall of a case of the circuit breaker, and then the circuit breaker is provided along the base. The circuit breaker is drawn out to the power supply side or load side, and the base is
Having a flexible bottom lid closing the bottom surface of the base , wherein the groove extends to the bottom of the base and communicates with the groove in the sidewall along a bottom side edge of the base. The bottom cover is formed integrally with the bottom lid through a bottom groove and a thin portion that are formed toward the power supply side or the load side and open at the end of the base, and that receive the lead wire coming out of the groove in the side wall. form
Circuit breaker, characterized in that a groove covering made and having been locked to the bottom groove for holding the lead wire to the bottom groove.