JP3057941B2 - Push button switch misoperation prevention structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to prevent a manual operation push button switch provided on an operating device such as a circuit breaker or a switch from being erroneously operated by accidentally touching the switch. Related to the structure.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing a conventional structure for preventing erroneous operation of a push button switch. A push button switch 3 is provided from the operation hole 5 of the outer peripheral cover 1 of the electric device toward the outside 6. An iron protective cover 2 is provided so as to cover the switch 3 and is screwed to the outer peripheral cover 1.

[0003] FIG. 4 is an A arrow view of FIG. The protective cover 2 is fixed by two screws 4, and a nameplate 7 indicating the presence of the switch is attached to the side. 3 and 4
In such a case, there is a risk that an electric circuit may be opened and closed if a person accidentally touches the push button switch.
If the push button switch 3 is erroneously operated, the electric equipment may operate and lead to a serious accident. for that reason,
Normally, the protective cover 2 is covered by the push button switch 3, and the protective cover 2 is removed only when the switch 3 is operated.

[0004]

However, the conventional apparatus as described above has problems that the switch cannot be seen and that it takes time to remove the protective cover. That is, since the protective cover was made of iron, it was difficult to recognize the presence of the push button switch without the nameplate. Further, since the protective cover is fixed with two screws, the screw must be removed each time, and it takes time to operate the push button switch. In the event of a hurry to operate, the protective cover was left unattended, and there was a possibility that the switch would be erroneously operated.

An object of the present invention is to make it easy to remove a protective cover and to make it possible to recognize the presence of an operation switch.

[0006]

According to the present invention, there is provided a structure for preventing an erroneous operation of a push button switch manually operated through an operation hole penetrating an outer peripheral cover of an electric device. Press the outer cover
Around the operation hole provided at the position facing the button switch.
U-shaped cross section formed by projecting outward
And a cover having an L-shaped cross section to cover the operation hole.
And a protective cover, and the protective cover
Cover the operation hole and place the L-shaped bend on one side in front.
Abutting against the edge of the protrusion, and the other side is the protrusion
Screw . In the above configuration, the protective cover is made of a transparent material.

[0007]

According to the structure of the present invention, the protective cover has an L-shaped bent portion along the edge of the U-shaped projecting portion.
It is screwed to the protruding part so as to cover the operation hole. The bend of the protective cover extends along the edge of the protrusion on the outer cover
Since the contact thereto, the protective cover without rotating it is not at least one portion screwed, it is fixed firmly protrusion. When operating the push button switch, unscrew the protective cover and remove the cover.

In the above configuration, the presence of the push button switch can be recognized by forming the protective cover from a transparent material.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
FIG. 1 is a sectional view showing a structure for preventing erroneous operation of a push button switch according to an embodiment of the present invention. Pushing the outer cover 1
Of the operation hole 5 provided in the portion where the switch button 3 is desired.
It is projected to the outside 6 side around the periphery to project a U-shaped cross section.
The protrusion 8 is formed. The protective cover 20 is formed of a transparent material into an L-shaped cross section , covers the push button switch 3, and has an L-shaped bent portion 20 </ b> A along the edge of the protruding portion 8.
Contact . Further, the L-shaped bent portion 20A
The side opposite to the provided side is screwed to the protrusion 8 with one screw 4.

FIG. 2 is a view taken in the direction of arrow B in FIG. The protective cover 20 is fixed by only one screw 4. By making the protective cover 20 transparent, the presence of the switch 3 can be clearly understood, and the nameplate conventionally attached is unnecessary.
Since the bending portion 20A of the protective cover 20 is hitting the edge of the projecting portion 8 screwing <br/> lever has been made at least one position, the protective cover 20 without rotation, secured to the projecting portion 8 Is done. When operating the push button switch 3, the protective cover can be removed by removing one screw.

[0011]

According to the present invention, as described above, the pressing of the outer peripheral cover is performed.
Surrounding a position facing was button switch provided et the operation hole
Is a U-shaped cross section formed by projecting outward.
And a cover having an L-shaped cross section to cover the operation hole.
And a protective cover, and the protective cover
Cover the operation hole and place the L-shaped bend on one side in front.
Abutting against the edge of the protrusion, and the other side is the protrusion
Screwed on . As a result, only one screw is required for the protective cover, so that the operability of the push button switch is improved as compared with the conventional case.

Further, by forming the protective cover from a transparent material, the presence of the push button switch can be recognized. This eliminates the need for a nameplate and reduces costs.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure for preventing an erroneous operation of a push button switch according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow B in FIG. 1;

FIG. 3 is a cross-sectional view showing a conventional push button switch erroneous operation prevention structure.

FIG. 4 is a view taken in the direction of arrow A in FIG. 3 ;

[Explanation of symbols]

1: outer peripheral cover, 20: protective cover, 3: push button switch, 4: screw, 5: operation hole, 6: external, 8: protrusion

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 9/02 H01H 13/02-13/04

Claims (2)

(57) [Claims] 1. A structure for preventing erroneous operation of a push button switch manually operated through an operation hole penetrating an outer peripheral cover of an electric device, wherein the push button switch of the outer peripheral cover is provided.
Around the operation hole provided at the position facing the switch.
A cross-section formed by projecting the U-shape,
With a protective cover with an L-shaped cross section to cover the hole
And the operation hole is covered with the protective cover.
And the L-shaped bent portion on one side thereof is
Abut the end and screw the other side to the protrusion.
Erroneous operation prevention mechanism for a push-button switch
Build. 2. The structure for preventing erroneous operation of a push button switch according to claim 1, wherein the protective cover is made of a transparent material.