JPH0715063Y2 - Misoperation prevention mechanism for push button switches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a structure of a so-called switch guard, which is an erroneous operation preventing mechanism for a push button switch.

[Conventional technology]

Conventionally, a switch guard of this type is disclosed in Japanese Utility Model Laid-Open No. 59-144832. The switch guard is used for a device such as a main power circuit of a power generation facility or an emergency stop device that may cause damage or unexpected danger when the switch is operated by mistake, as shown in FIG. It is structured like this.

That is, the screw 60 is formed on the outer peripheral portion of the rear end of the switch main body 51 having the push button 52, and when the switch main body 51 is mounted on the window formed on the switch mounting panel 54, the rear surface of the switch mounting panel 54 is The switch body 51 is fixed by screwing a mounting nut 61 from the. An engaging groove 62 is formed in a portion of the switch body 51 exposed from the switch mounting panel 54, and a push button protective cover formed to cover the push button 52 in the engaging groove 62, that is, a switch guard. The 63 is detachably attached.

[Problems to be solved by the device]

However, in this type of push button switch, it is generally practiced to form a window portion on the surface of the mounting panel and to continuously operate the device in a row direction.
The push button switch equipped with 63 had a larger overall length in the direction in which the push buttons were individually installed than those without the switch guard 63. Therefore, even if the specifications with and without the switch guard 63 are the same in the number of pushbutton switches connected in series, the shape of the window must be changed, and the specifications of the mounting panel can be changed. I could not respond flexibly.

Further, in the above-mentioned conventional technique, since the support frame 64 supporting the switch guard 63 is formed so as to surround the exposed portion of the switch body 51, there is an advantage that the fitting is strong, but the switch guard 63 There was a drawback that it was difficult to put on and take off.

The present invention has been made in view of the above matters, and its purpose is to be easily mounted on a push button switch and to be mounted on a push button switch without changing the size of the window portion on the panel side. The purpose of the present invention is to provide a switch guard capable of operating and to realize an erroneous operation prevention mechanism for push button switches, which has high versatility when changing specifications.

[Means for Solving the Problems]

The present invention has the following configuration in order to solve the above technical problems.

That is, in the first configuration example, the flange portion 3 is provided around the front end of the switch body 1 on the push button 2 side.

The flange 3 is brought into contact with the window 5 formed in the switch mounting panel 4 so that the switch body 1 can be held.

A frame body 6a of the switch guard 6 which is formed flexibly is engaged with the flange portion 3, and the frame body 6a has projections 12 and 13 projecting inwardly from a pair of opposed bridge portions 10 and 11, respectively. Form.

On the other hand, the concave portions 14 and 15 corresponding to the protrusions 12 and 13 of the flange portion 3 are formed so that they can be engaged and disengaged from the push button 2 side.

Further, a shaft support portion 7 is formed at an edge portion of the frame body 6a of the switch guard 6, and a push button protection cover 8 formed so as to cover the push button 2 is pivotally supported on the shaft support portion 7.

In the frame body portion 6a, the distance between the outer edges of the pair of bridge portions 16 and 17 different from the pair of bridge portions 10 and 11 is formed to be the width of the flange portion 3 or less to form the switch guard 6, Implemented an erroneous operation prevention mechanism.

Subsequently, in the second configuration example, in addition to the first configuration example, when a plurality of the switch main bodies 1 are continuously arranged, a partition wall body 18 provided on both sides of each switch main body 1 and a flange portion 3 are provided. The fitting portion 19 to be fitted is formed so that the positioning can be performed, thereby providing a push button switch erroneous operation preventing mechanism.

[Action]

According to the above-described means, the distance between the outer edges of the bridge portions 16 and 17 in the frame body portion 6a of the switch guard 6 is formed to be equal to or less than the width of the flange portion 3.
The entire lateral length of the push button switch is not changed between the state in which the switch is equipped and the state in which it is not provided, and it is not necessary to change the size of the window 5 depending on whether the protective cover 8 is necessary or not.
An operation panel system capable of flexibly responding to changes in specifications can be provided.

Further, when the switch guard 6 is equipped, when the frame body 6a is pushed into the flange portion 3 provided around the front end of the switch body 1 on the push button 2 side, the flexibility causes the projections 12 and 13 to form the protrusions 3 on the flange portion 3. And then fit into the recesses 14 and 15, respectively. When removing the switch guard 6, insert a thin flat-blade screwdriver or the like between the switch mounting panel 4 and the frame 6a, and insert one of the protrusions 12 and 13 into the recess 1.
By twisting in a direction away from the frames 4 and 15, the frame 6a can be easily removed due to its flexibility. In this way, the switch guard 6 can be attached and detached extremely easily.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

A push button 2 is provided on the entire surface of the switch body 1, and the switch body 1 is used by being attached to a switch attachment panel 4 having a window 5 formed therein. This switch body 1
A flange portion 3 is provided around the front end of the push button 2 side. As shown in FIG. 2, the flange portion 3 is formed with an inclination of approximately 45 degrees on the front surface side of the peripheral edge thereof.

A switch guard 6 formed so as to be detachable from the push button 2 side can be attached to the flange portion 3. The switch guard 6 has a frame body 6a made of a flexible synthetic resin, and the frame body 6a has a pair of vertically facing bridge portions 10 and 11 and a pair of left and right bridge portions 16a. , 17
Then, it is formed in a square shape having a window for a push button, and the bridge portion 11 is formed with a recess 11a for escaping a finger.

The outer edge portions of the bridge portions 10 and 11 are extended at an angle of approximately 45 degrees, and projections 12 and 13 projecting inward are formed at the inner central portions of the bridge portions 10 and 11, respectively. The projections 12 and 13 are formed on the rear edges of the bridge portions 10 and 11, and are tapered from the rear edges to the apex of the projections. The bridge section
The distance between the outer edges of 16 and 17 is formed to be equal to or less than the width of the flange portion 3.

In this way, by setting the distance between the outer edges of the bridge portions 16 and 17 to be equal to or less than the width of the flange portion 3, even when the switch guard 6 is provided on the front surface of the push button switch 1, the push button switch 1 The lateral length of the front surface of the is not increased. Therefore, even when the switch guard 6 needs to be attached / detached while being mounted on the mounting panel 4, the specification can be changed without changing the outer shape of the mounting window portion 5.

A shaft support portion 7 is formed at the front edge of the bridge portion 10, and a transparent push button protection cover 8 formed so as to cover the push button 2 is pivotally supported on the shaft support portion 7. The push button protection cover 8 is always biased in the closing direction by a coil spring 8a provided on the shaft support 7, but the spring 8a is not always essential.

On the other hand, concave portions 14 and 15 are formed at the portions of the flange portion 3 corresponding to the protrusions 12 and 13, and the concave portions 14 and 15 are formed at the corner portions so as to communicate with the back surface of the flange portion 3 as shown in FIG. It is formed on. As a result, the projections 12 and 13 do not project from the rear end of the flange portion 3 even when the switch guard 6 shown in FIG.

Further, as shown in FIG. 4, when a plurality of switch main bodies 1 are arranged continuously, partition walls 18 can be inserted on both sides of the switch main body 1 in order to prevent the push buttons 2 from being pressed incorrectly. As shown in FIG. 4, the partition wall 18 has a plate portion 18
A partition portion 18b is provided at one end of a, and a fitting portion 19 to be fitted into the flange portion 3 is formed on the partition portion 18b. An elastic body 18c is formed on the plate portion 18a so that it will not come off when the partition wall body 18 is inserted between the flange portions 3.

In the continuous mounting shown in FIG. 4, in the switch guard 6, the distance between the outer edges of the bridge portions 16 and 17 is made smaller than the width of the flange portion 3 to keep the mounting density small. The partition 18 can be inserted between the push button switches 1. Further, even when such a partition 18 is attached, the attachment / detachment of the switch guard 6 is facilitated.

In mounting the switch guard 6, first, the frame 6a is pushed from the front surface of the switch body 1 into the flange portion 3 provided around the front end on the push button 2 side. Then, due to the flexibility of the frame body 6a, the projections 12 and 13 move forward over the flange portion 3 and fit into the recessed portions 14 and 15, respectively.

On the other hand, when removing the switch guard 6, if a thin flat-blade screwdriver or the like is inserted between the switch mounting panel 4 and the switch guard 6 and one of the protrusions 12 and 13 is pryed away from the recesses 14 and 15, Due to the flexibility of the frame body 6a, the engagement is released and the frame body 6a can be easily removed.

[Effect of device]

According to the present invention, it is possible to provide a protective cover which is extremely easy to attach / detach to / from a push button switch and which can be mounted on the push button switch without changing the size of the window portion on the panel side. You can

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a side view of a main portion, FIG. 3 is a front view, and FIG. 4 is a plurality of push button switches. And FIG. 5 is an exploded perspective view showing a conventional switch guard in the case where a partition wall is provided side by side. 1 ... Switch main body, 2 ... Push button, 3 ... Flange portion, 4 ...
Switch mounting panel, 5 ... Window, 6 ... Switch guard, 6a ... Frame, 7 ... Shaft support, 8 ... Push button protective cover, 1
0, 11 ... Bridge, 12, 13 ... Protrusion, 14, 15 ... Recess, 16, 17 ...
Bridge, 18 ... Partition, 19 ... Fitting part.

Claims (2)

[Scope of utility model registration request] 1. A flange portion is provided around the front end of the switch body on the push button side, and the flange portion is brought into contact with a window portion formed in a switch mounting panel so that the switch body can be held. A flexible frame body of the switch guard is attached to the frame body, and the frame body is formed with projections projecting inwardly on a pair of opposing bridge portions, and on the other hand, portions corresponding to the projections of the flange portion. A push button protection cover formed by forming a concave portion on both sides so that both can be freely engaged and disengaged from the push button side, a shaft supporting portion is formed on an edge portion of the frame body, and the shaft supporting portion is formed so as to cover the push button. A push button switch characterized in that the distance between the outer edges of a pair of bridge portions different from the pair of bridge portions in the frame is formed to be less than or equal to the width of the flange portion. Misoperation prevention mechanism. 2. A flange portion is provided around a front end of the switch body on the push button side, and the flange portion is brought into contact with a window portion formed in a switch mounting panel so that the switch body can be held. A flexible frame body of the switch guard is attached to the frame body, and the frame body is formed with projections projecting inwardly on a pair of opposing bridge portions, and on the other hand, portions corresponding to the projections of the flange portion. A push button protection cover formed by forming a concave portion on both sides so that both can be freely engaged and disengaged from the push button side, a shaft supporting portion is formed on an edge portion of the frame body, and the shaft supporting portion is formed so as to cover the push button. And the distance between the outer edges of a pair of bridge portions different from the pair of bridge portions in the frame body is smaller than the width of the flange portion, while a plurality of switch main bodies are provided. When arrayed consecutively, Tsu in the partition wall member provided on both sides of the switch body, the push button switch for avoiding an erroneous operation mechanism, characterized by being configured so as to be positioned to form a fitting portion fitted into the flange portion.