JP2809010B2 - Circuit breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a name plate of a circuit breaker.

[0002]

2. Description of the Related Art FIG. 10 shows, for example, Japanese Utility Model Publication No. 58-31166.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing a conventional circuit breaker disclosed in Japanese Unexamined Patent Publication (Kokai) No. HEI 10-101, wherein 1 is a circuit breaker case including a base 1a and a cover 1b detachably fixed to the base 1a, and incorporating a breaking mechanism. Reference numeral denotes a handle for operating the shut-off mechanism from the outside, and reference numeral 3 denotes a name plate attached to the front of the breaker case 1.

[0003]

In a conventional circuit breaker, for example, when removing or attaching an accessory device (not shown) in the circuit breaker case 1, the cover 1b is removed from the base 1a. When the case 1 is opened, the cover 1b
At the same time, the nameplate 3 separates from the base 1a on the main body side,
Further, when the circuit breakers are juxtaposed, there is a problem that the removed cover 1b is erroneously attached and the reliability of the nameplate 3 is lost.

The present invention has been made to solve such a problem, and the nameplate is not separated from the main body side even when the auxiliary cover is removed when removing or attaching the attached device, and the reliability of the nameplate is improved. It is an object of the present invention to obtain a circuit breaker that can ensure the circuit breaker.

[0005]

In the circuit breaker according to the present invention, an auxiliary cover is attached to a circuit breaker case composed of a base and a main cover, a hole is provided in the auxiliary cover, and the main cover is attached to the auxiliary cover from this hole. The nameplate was made available.

[0006]

In the present invention, since the nameplate attached to the main cover can be viewed from the hole of the auxiliary cover, the nameplate remains in the circuit breaker case even if the auxiliary cover is removed.

[0007]

【Example】

Embodiment 1 FIG. One embodiment of the present invention will be described with reference to FIGS. 1 is an external perspective view, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a perspective view showing a state where an auxiliary cover is removed. In the drawing, reference numeral 4 denotes a circuit breaker case including a base 4a and a main cover 4b detachably fixed to the base 4a and having a built-in breaking mechanism, and 5 denotes a surface of the main cover 4b on the surface 401 opposite to the base 4a. The recesses 7 formed to accommodate the attachments 6 (alarm switches, auxiliary switches, etc.) are auxiliary covers for closing the recesses 5, and are detachably attached to the main cover 4b. Reference numeral 8 denotes a handle for operating the shut-off mechanism from the outside, reference numeral 9 denotes a nameplate attached to the main cover 4b, and reference numeral 10 denotes a hole provided in the auxiliary cover 7, which is provided at a position where the nameplate 9 can be viewed from the outside.

When the auxiliary cover 7 is attached as shown in FIGS. 1 and 2, the nameplate 9 can be seen from the hole 10 of the auxiliary cover 7, so that it conforms to the specification as a circuit breaker, and is shown in FIG. When the auxiliary cover 7 is detached from the circuit breaker case 4 as described above, the name plate 9 remains attached to the circuit breaker case 4, and the attachment device 6 can be attached to or removed from the recess 5.

Embodiment 2 FIG. In the first embodiment, the auxiliary cover 7
Although the hole 10 is shown in FIG. 4, the portion of the hole 10 may be a transparent portion 11 as shown in FIG. In this case, no dust or the like enters the inside of the auxiliary cover 7, and the nameplate 9 is not stained.

Embodiment 3 FIG. The transparent portion 11 of the second embodiment is
As shown in FIG. 5, a transparent lens 12 (magnifying lens) may be used. In this case, the characters and the like on the nameplate 9 are enlarged, so that the nameplate 9 can be easily seen, and the nameplate 9 can be reduced in size, thereby saving the nameplate space.

Embodiment 4 FIG. In the second embodiment, the auxiliary cover 7
Although the transparent cover 11 is shown in FIG. 6, the auxiliary cover 7A may be entirely transparent as shown in FIG.

Embodiment 5 FIG. Next, another embodiment of the present invention will be described with reference to FIGS. 7 is an external perspective view, and FIG.
FIG. 9 is a cross-sectional view taken along line VIII-VIII in FIG. 7, and FIG. 9 is a perspective view showing a state in which the auxiliary cover is removed. In the figure, reference numeral 13 denotes an accessory device name plate attached to the accessory device 6;
Reference numeral 4 denotes a hole provided in the auxiliary cover 7, and is provided at a position where the accessory device name plate 13 can be seen. Reference numeral 15 denotes a main body name plate attached to the auxiliary cover 7, and 16 denotes a transparent portion provided on the main body name plate 15,
It is provided at a position corresponding to the hole 14 of the auxiliary cover 7.

In this way, part or all of the accessory device name plate 13 can be exposed from the outside through the transparent portion 16 and the hole 14, so that the accessory device 6 can be easily confirmed from the outside.
The hole 14 of the auxiliary cover 7 may be a transparent part, or the transparent part 16 of the main body name plate 15 may be a hole.

[0014]

As described above, according to the present invention, the nameplate is not separated from the main body side even when the auxiliary cover is removed when attaching or detaching the attached device, so that the reliability of the nameplate can be secured. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a first embodiment of the present invention.

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

FIG. 3 is a perspective view showing a state where an auxiliary cover is removed from FIG. 1;

FIG. 4 is a sectional view of an auxiliary cover according to a second embodiment of the present invention.

FIG. 5 is a sectional view of an auxiliary cover according to a third embodiment of the present invention.

FIG. 6 is an external perspective view showing a fourth embodiment of the present invention.

FIG. 7 is an external perspective view showing Embodiment 5 of the present invention.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a perspective view showing a state where an auxiliary cover is removed from FIG. 7;

FIG. 10 is an external perspective view showing a conventional circuit breaker.

[Explanation of symbols]

 Reference Signs List 4 breaker case 4a base 4b main cover 401 surface of main cover opposite to base 5 recess 6 attachment device 7 auxiliary cover 8 handle 9 name plate 10 hole

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinji Yamagata 1-8 Midoricho, Fukuyama City Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Shinsaku Yamaguchi 1-8 Midoricho Fukuyama City Mitsubishi Electric Fukuyama Works (72) Inventor Tsukasa Iio 1-8 Midoricho, Fukuyama-shi Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Yoshiaki Kobayashi 1-8 Midoricho Fukuyama-shi Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Setsuo Hosokai Fukuyama 1-8, Midoricho, Ichiba Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Hirohei Fujiwara 1-8 Midoricho, Fukuyama City Inside Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Shiro Murata 1-8 Midoricho, Fukuyama City Mitsubishi (56) References JP-A-5-12980 (JP, A) JP-A-59-101735 (JP, A) JP-A 1-206 536 (JP, A) Japanese Utility Model Showa 57-98662 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01H 69/00-83/22

Claims (4)

(57) [Claims] 1. A circuit breaker case comprising a base and a main cover fixed to the base and having a built-in breaking mechanism.
A circuit breaker having a recess formed on the surface of the main cover opposite to the base and for accommodating an accessory of the blocking mechanism, and an auxiliary cover attached to the main cover to close the recess; 3. The circuit breaker according to claim 1, wherein a hole is provided in the auxiliary cover, and a nameplate attached to the main cover can be viewed through the hole. 2. A circuit breaker case comprising a base and a main cover fixed to the base and having a built-in breaking mechanism.
A circuit breaker having a recess formed on the surface of the main cover opposite to the base and for accommodating an accessory of the blocking mechanism, and an auxiliary cover attached to the main cover to close the recess; 3. The circuit breaker according to claim 1, wherein a transparent portion is provided on the auxiliary cover, and an internal nameplate can be seen from the transparent portion. 3. A circuit breaker, wherein a transparent lens is provided in the hole according to claim 1. 4. A circuit breaker case comprising a base and a main cover fixed to the base and having a built-in breaking mechanism.
A circuit breaker having a recess formed on the surface of the main cover opposite to the base and for accommodating an accessory of the blocking mechanism, and an auxiliary cover attached to the main cover to close the recess; 3. The circuit breaker according to claim 1, wherein a name plate of the accessory device housed in the recess is exposed through a transparent window provided in the auxiliary cover.