JP2831211B2 - Push button abuse prevention cover structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover structure for preventing abuse of a push button, and more particularly, to a structure capable of continuing to press an emergency push button.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional push button abuse prevention cover structure. In FIG. 6, reference numeral 1 denotes a mounting plate of an operation panel such as an escalator or an elevator,
An emergency stop button 2 is provided on the mounting plate 1 so as to be able to move in and out, and an emergency stop button for pushing a contact button 3a of an emergency stop switch 3 is fixed to the mounting plate 1 via a mounting screw 5 and an emergency stop button is provided through an opening 4a. A cylindrical button frame with the stop button 2 protruding, 6 is an abuse-preventing cover body that is removably screwed to the screw portion 4b of the button frame 4, and 7 is a front portion of the abuse-preventing cover body 6. 6a
The switch pressing member 8 provided on the control panel 8 is an operation panel having a guide hole 8a that penetrates and projects through the front portion 6a. The emergency stop switch 3 is normally off (not operated).
Held in state.

Next, the operation will be described. In FIG. 6, when an emergency stop of a device such as an escalator is performed, when the switch pressing body 7 is pressed with a finger or the like, the contact button 3a of the emergency stop switch 3 is pushed in, the emergency stop switch 3 is operated, and an operation circuit (not shown) is activated. It turns off and the escalator stops.

[0004]

Since the conventional abuse prevention cover structure for a push button is constructed as described above, the following problems exist. That is, the emergency stop switch can be operated by pushing the switch pressing body with a finger, but when the pressing of the finger is stopped, a spring (not shown)
It is difficult to obtain only one-time operation because the push button returns to the original state by the action of (1). Therefore, for example, in order to maintain the stopped state for a long period of time for maintenance and inspection of an escalator or the like, it is necessary to keep pushing the finger for a long time, which is extremely difficult for an operator.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a push button abuse prevention cover structure that can continue to press an emergency push button.

[0006]

According to the present invention, there is provided a push button abuse prevention cover structure which is provided on a mounting plate so as to be able to be pushed in and covers the emergency push button for pushing in a contact button of an emergency stop switch. An abuse-preventing cover structure for a push button having an abuse-preventing cover body detachably provided on a frame via a screw portion, wherein the first
A switch pressing member selectively and detachably provided on the engaging portion and the second engaging portion; a convex portion formed on a first surface of the switch pressing member; and a convex portion formed on a second surface of the switch pressing member. By engaging the switch pressing member with the second engaging portion, bringing the convex portion into contact with the emergency push button, and screwing the abuse prevention cover member into the button frame. The emergency push button keeps pushing the contact button, and the switch pusher is engaged with the first engagement portion so that the flat portion faces the emergency push button to release the push of the emergency push button, In addition, in order to cover the emergency push button for pushing the contact button of the emergency stop switch, which is provided to be freely inserted into the mounting plate, an abuse prevention cover body which is detachably provided via a screw portion on the button frame of the mounting plate is provided. A push button abuse prevention cover structure Te, first of the abuse prevention cover member 1
A switch pressing body engaged with the engaging portion and provided so as to be freely inserted, and an insertion adapter having a U-shaped cross section and having elasticity, which is inserted into the abuse prevention cover body and presses the switch pressing body, By engaging the insertion adapter with the first engaging portion, the emergency push button can be kept pressed in through the switch pressing body. In order to cover the emergency push button for pushing the contact button of the stop switch,
In the abuse prevention cover structure of the push button, which has an abuse prevention cover body detachably provided via a screw portion to the button frame of the mounting plate, in the abuse prevention cover body integrally provided with a switch pressing body, The thickness of the switch pressing body,
The emergency push button is configured to include a pair of the abuse prevention cover members having a thickness that can always be pressed and a thickness that makes the emergency push button not contact.

[0007]

In the push button abuse prevention cover structure according to the first aspect of the present invention, when the switch pressing body is pressed with a finger in a state where the convex portion of the first surface of the switch pressing body is on the front side (FIG. 1). The emergency stop switch operates to stop the escalator and the like. In addition, because there is a gap between the plane portion of the second surface and the emergency push button, when the pressing of the switch pressing body by the finger is stopped, the emergency push button returns to the original position,
The emergency stop switch returns to the original off (non-operating) state. Further, as shown in FIG. 2, when the direction of the switch pressing body is changed so that the convex portion of the first surface faces the emergency push button and the flat portion of the second surface is on the front side, the switch pressing body is The projection is locked to the abuse prevention cover, and the convex portion and the emergency push button are joined, so that the emergency push button is continuously pressed and the operation state of the emergency stop switch can be continued. Therefore, maintenance of the elevator or the escalator can be continued with confidence.

Further, in the push button abuse prevention cover structure according to the second aspect, as shown in FIG. 4, when the emergency push button is pushed by inserting a cover provided on the abuse prevention cover body by inserting an insertion adapter, the insertion is performed. Since the adapter is locked to the abuse prevention cover body, the pressing of the emergency push button can be continued.

Further, in the abuse prevention cover structure for a push button according to the third aspect, as shown in FIG. 5, the switch pressing body of the abuse prevention cover is formed integrally and the thickness of the switch pressing body is reduced. When using the same abuse prevention cover as before, when the same abuse prevention cover is used, the emergency stop switch is temporarily activated as before, but the abuse prevention cover having a thick switch pressing body according to the present invention is used. When used, as shown in FIG. 5, the pressing of the emergency push button is continued due to the thickness of the switch pressing body, and the operation of the emergency stop switch is continued.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a push button abuse prevention cover structure according to the present invention will be described in detail with reference to the drawings. The same or equivalent parts as those in the conventional example will be described with the same reference numerals. Embodiment 1 FIG. In FIG. 1, reference numeral 1 denotes a mounting plate of an operation panel such as an escalator or an elevator, and 2 denotes an emergency push button which is provided so as to be able to be pushed into the mounting plate 1 and presses a contact button 3a of an emergency stop switch 3; A cylindrical button frame 6 fixed to the plate 1 via mounting screws 5 and projecting the emergency push button 2 through the opening 4a, 6 is provided by being detachably screwed to the screw portion 4b of the button frame 4. The abuse prevention cover body 7 is a switch pressing body provided at the front portion 6a of the abuse prevention cover body 6, and the operation panel plate 8 has a guide hole 8a that penetrates and projects through the front portion 6a.

The switch pressing body 7 has a plate-like shape as a whole, and has a first surface 7a formed with a convex portion 7aA and a second surface 7b formed with a flat portion 7bA. A first engagement portion 10 and a second engagement portion 11 are formed on the inner surface of the front portion 6a of the abuse prevention cover 6, and the switch pressing member 7 is mounted using the first engagement portion 10. Then, the convex portion 7aA is located outside and the flat portion 7bA faces the emergency push button 2. When the switch pressing body 7 is mounted using the second engagement portion 11, the flat portion 7bA is located outside and the convex portion 7aA is located. Faces the emergency push button 2.

Next, a case where the emergency stop switch 3 is operated in the above configuration will be described. First, as shown in FIG. 1, when the switch pressing body 7 is pressed in a state where the convex portion 7aA of the switch pressing body 7 faces outward, the emergency push button 2 is pressed.
A gap G is provided between the flat part 7bA facing the
Exists, the emergency push button 2 is pushed in only when the switch pressing body 7 is pressed, and the emergency stop switch 3 is activated. When the pressing is stopped, the emergency push button 2 is pressed by a spring member (not shown). The emergency stop switch 3 returns to the inoperative state.

Further, as shown in FIG. 2, the abuse prevention cover 6 is detached from the button frame 4, and the second engaging member 11 is so arranged that the convex portion 7aA of the switch pressing member 7 faces inward. When the switch pressing member 7 is engaged with the emergency pressing button 2, the emergency pressing button 2 is pressed by the convex portion 7aA by screwing the abuse prevention cover body 6 because the convex portion 7aA is in contact with the emergency pressing button 2. At the same time as the push-in operation is continued, the emergency stop switch 3 is in the operation continuation state. FIG. 3 shows a front view of FIG.

Embodiment 2 FIG. 4 shows a second embodiment. The same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted, and only the parts different from FIG. 1 will be described. The switch pressing body 7A, which can be pushed into and engaged with the first engaging portion 10 of the abuse prevention cover body 6, has both surfaces formed in a planar shape, and has a cross section U inserted and engaged with the first engaging portion 10. Since the push-in adapter 20 having a letter shape and having elasticity continuously pushes the emergency push button 2 through the switch pressing body 7A, the operation of the emergency stop switch 3 is continued. Also, this push-in adapter 20
Is removed, the emergency push button 2 returns to its original state, and the emergency stop switch 3 is turned off.

Embodiment 3 FIG. 5 shows a third embodiment, in which the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted and only the parts different from FIG. 1 will be described. The abuse prevention cover 6A includes:
As shown in FIG. 5, an abuse prevention cover 6A having a switch pressing body 7B thicker than the conventional switch pressing body 7 and an abuse prevention cover (not shown) having the same thickness as the conventional one. Are prepared separately, and this abuse prevention cover 6A is used in place of the conventional abuse prevention cover body 6 shown in FIG. 6, so that the emergency stop switch 3 is connected via the emergency push button 2 as shown in FIG. It is continuously in operation. Therefore, in order to return to the original state, a gap is formed between the switch pressing body and the emergency push button 2 by returning the above-mentioned abuse prevention cover body 7B to the one shown in FIG.
Is turned off.

[0016]

Since the abuse prevention cover structure for a push button according to the present invention is constructed as described above, the following effects can be obtained. That is, in the first embodiment, by changing the direction of the switch pressing body, the pressing of the emergency push button can be continued by the convex portion. Further, in the second embodiment, the insertion of the emergency push button can be continued only by inserting the insertion adapter into the abuse prevention cover body. Further, in the third embodiment, it is possible to continue pushing the emergency push button by replacing the switch pressing body with an abuse prevention cover having a thicker wall. Therefore, it is extremely useful when performing maintenance of an escalator, an elevator, and the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a push button abuse prevention cover structure according to the present invention.

FIG. 2 is a sectional view showing an operation state of FIG. 1;

FIG. 3 is a front view of the operation panel of FIG. 1;

FIG. 4 is a sectional view showing a second embodiment.

FIG. 5 is a sectional view showing a third embodiment.

FIG. 6 is a cross-sectional view showing a conventional push button abuse prevention cover structure.

[Explanation of symbols]

 Reference Signs List 1 mounting plate 2 emergency push button 4 button frame 6, 6A abuse prevention cover body 7, 7A, 7B switch pressing body 7a first surface 7aA convex portion 7b second surface 7bA flat portion 20 insertion adapter

Claims (3)

(57) [Claims] An emergency push button provided on a mounting plate (1) so as to be able to be pushed into the contact button (3a) of an emergency stop switch (3).
To cover (2), screw (4b) on the button frame (4) of the mounting plate (1).
In the abuse prevention cover structure of the push button, which has an abuse prevention cover body (6) detachably provided through
A switch pressing member (7) selectively and detachably provided on the first engagement portion (10) and the second engagement portion (10 or 11) of the abuse prevention cover (6); A convex portion (7aA) formed on the first surface (7a) of (7) and a second portion of the switch pressing body (7);
A flat portion (7bA) formed on the surface (7b), the switch pressing body (7) is engaged with the second engaging portion (11), and the convex portion (7aA) is connected to the emergency push button ( 2) and screwing the abuse prevention cover body (6) into the button frame (4) allows the emergency push button (2) to continue pushing the contact button (3a), and the switch pressing body (7 ) Is engaged with the first engagement portion (10), and the flat portion (7bA) faces the emergency push button (2) to release the pressing of the emergency push button (2). Push button abuse prevention cover structure. 2. An emergency push button provided on a mounting plate (1) so as to be able to be pushed into the contact button (3a) of an emergency stop switch (3).
To cover (2), screw (4b) on the button frame (4) of the mounting plate (1).
In the abuse prevention cover structure of the push button, which has an abuse prevention cover body (6) detachably provided through
A switch pressing member (7A) that is engaged with the first engagement portion (10) of the abuse prevention cover body (6) and is provided so as to be freely inserted; and a switch pressing body that is inserted into the abuse prevention cover body (6) and presses the switch. Body (7A)
An insertion adapter (20) having a U-shaped cross section and elasticity for pushing in the switch, by engaging the insertion adapter (20) with the first engagement portion (10),
An abuse prevention cover structure for a push button, characterized in that the push-in state of the emergency push button (2) can be continued through (7A). 3. An emergency push button provided on a mounting plate (1) so as to be able to be pushed into the emergency stop switch (3) for pushing a contact button (3a) of the emergency stop switch (3).
To cover (2), screw (4b) on the button frame (4) of the mounting plate (1).
In the abuse prevention cover structure of the push button, which has an abuse prevention cover body (6) detachably provided through
The switch pressing body (7) is integrated with the abuse prevention cover body (6).
B), wherein the thickness of the switch pressing body (7B) is such that the emergency push button can always be pressed, and the emergency push button (2) has a thickness that is not in contact with the pair of abuse prevention cover bodies. (6A,
An abuse prevention cover structure for a push button, characterized in that the cover structure has 6).