JPH0353391Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cover device for a reusable push button that is attached to the front surface of a push button of a push button type emergency bell or other device equipped with a push button.

[Conventional technology]

As a cover device for covering a reusable push button, the following is generally used. FIG. 1 is an exploded perspective view of this push button cover device, and FIGS. 2A and 2B are longitudinal sectional views showing the push button cover device attached to the front surface of the push button. As shown in FIGS. 1 and 2, a and b, this push button cover device includes a box-shaped cover 2 that covers the push button 1 and a frame-shaped body 3. Protrusions 2a, 2a projecting outward are provided on both sides of the cover 2. Protrusion 2a
The base of the protrusion 2a has elasticity, and when a pressing force is applied to the tip of the protrusion 2a, the protrusion 2a retracts, and when the pressing force is removed, it protrudes back to its original state. The body 3 has a peripheral wall 3a that surrounds the cover 2 and guides the pushing operation of the cover 2, and has an upper part of the peripheral wall 3a that prevents the cover 3 from coming off.
It has a protrusion 3b which is an inward flange. Windows 3c, 3c are provided in the opposing peripheral walls 3a, 3a, and as shown in FIG.
Insert the cover 2 from below the window 3c of the body 3,
If the protrusions 2a, 2a of the cover 2 are fitted into the cover 3c, the push button cover device 4 will be obtained. As shown in the figure, the push button cover device 4 has a body 3 fitted and fixed into a recess 5a provided around the push button 1 in a main body case 5 of the device equipped with the push button 1. , is attached to the front of the push button 1. When the cover 2 of the push button cover device 4 is pushed, the push button 1 below it is pushed. After pressing the cover 2, it can be reused by returning it to its original position using the pushing force of the push button 1 or the like.

[The problem that the idea attempts to solve]

The conventional push button cover device has the following problems. In other words, as shown by the arrow in FIG. 2b, if the end of the cover 2 is pushed and it falls off, the contact part with the switch 1 may not be lowered sufficiently, or the cover 2 may fall against the surrounding wall 3a on the way down. There were many cases where the machine would get stuck and cause problems such as when it stopped working. When you press the end,
Since the cover 2 tends to get caught on the peripheral wall 3a, there is a problem in that the cover 2 feels uncomfortable when operated.

This idea was made to solve this problem, and no matter where you press the cover,
You can reliably press the push button below, and
To provide a cover device for a push button with good operability (operation feel) of the cover.

[Means to solve the problem]

In order to solve the above problems, the push button cover device according to this invention includes a cover that covers the push button;
The push button cover device has a peripheral wall that surrounds the cover and guides the push-in operation of the cover, and a frame-shaped body that has a first protrusion on the upper part of the peripheral wall that prevents the cover from coming off. The cover is a plate-shaped body, and the body has a second body supporting the cover at a position below the protrusion on the inner surface of the peripheral wall.
The peripheral wall has an outward flange at its upper end, and a peripheral wall is provided on the back side of the flange. A groove is provided along the edge of the groove, and the second protrusion is formed at a position lower than the bottom surface of the groove.

[Effect]

Since the cover is a plate-shaped body, even if the cover is dropped, it will not get caught on the surrounding wall and the switch can be operated reliably. Since a protrusion is provided on the surrounding wall side and notches are provided on both sides of this protrusion, the plate-shaped cover is supported on the upper part of the protrusion, and the part of the surrounding wall where the protrusion is provided is elastically deformed to facilitate the push-in operation of the cover. You can definitely do it. Moreover, at the top of the surrounding wall,
An outward facing flange with a groove provided on the back surface is provided, and the protrusion is formed at a lower position than the bottom surface of the groove, so that elastic deformation of the peripheral wall of the flange causes the elastic deformation of the peripheral wall to be at a position higher than the protrusion. The deformation point of the surrounding wall is easier to spread and the protrusion is Since it becomes easier to move outward, the cover can be pushed in with a small pressing force.

〔Example〕

Hereinafter, this invention will be explained in detail based on drawings showing embodiments.

FIG. 3 is an exploded perspective view of the push button cover device according to this invention, FIG. 4 a is a bottom view of the body of the push button cover device, FIG. Plan view, d is B-B in a
FIGS. 5A to 5C are longitudinal sectional views taken along the line and showing the cover device for the push button attached to the front surface of the push button and its operating state. As shown in these figures, this push button cover device also covers push button 1 in the same way as the conventional one.
The body 7 has a peripheral wall 8 that surrounds the cover 6 and guides the pushing operation of the cover 6, and a frame-shaped body 7 that surrounds the cover 6 and has a peripheral wall 8 that guides the pushing operation of the cover 6. cover 6
Inward flange-like protrusions 9, 9 to prevent separation of the
have.

As shown in the figure, the cover 6 is a flat plate-like body, and the body 7 includes a protrusion 10 that supports the cover 6 on the inside of opposing peripheral walls 8a, 8a different from the tip.
10, and cuts 11 on both sides of these projections 10, 10 for imparting elasticity to the peripheral walls 8a, 8a provided with these projections 10, 10.
...is provided.

As shown in detail in FIG. 6b, an outward flange 16 is provided at the upper end of the peripheral wall 8, and at least a portion along the edge of the peripheral wall 8a among the portions along the edge of the peripheral wall 8 on the back surface of the outward flange 16. A groove 17 is provided in the groove 17 so that the protrusion 10 is lower than the bottom surface of the groove 17. Further, the notches on both sides of the peripheral wall 8a are made up to the height of the bottom surface of the groove 17.

As shown in FIG. 5a, when the cover 6 is fitted between the protrusion 9 and the protrusion 10 of the body 7, a push button cover device is obtained. As shown in the figure,
In this push button cover device, the body 7 is fitted and fixed in a recess 5a provided around the push button 1 in the main body case 5 of the device equipped with the push button 1, as in the conventional case. can be attached to. Then, when the cover 6 of the push button cover device is pushed downward, the peripheral walls 8a, 8a are removed from the flange 16.
Starting from the bottom of the groove 17 on the back surface, the protrusions 10, 10 are expanded outward, the cover 6 is lowered, and the push button 1 is pressed as shown in FIG. 5b. After the cover 6 passes the protrusion 10, the protrusion 10 returns to its original position due to the elasticity of the peripheral wall 8a.

In this push button cover device, the cover 6 is a plate-shaped body, which is thinner than a conventional box-shaped body. Even if one side of the cover 6 falls off due to pressing, one side of the cover 6 will be sufficiently lowered to a predetermined position. Therefore, the contact portion with the switch 1 is also sufficiently lowered, and there is no fear that the cover 6 will get caught on the peripheral wall 8 and become stuck. Since there is less risk of the cover 2 getting caught on the surrounding wall 8,
Good operating feel.

As means for supporting the cover, a protrusion is provided on the elastic peripheral wall. In this way, the quality is stabilized because there is less risk of damage due to variations in the pressing force required for the cover from device to device. The reason is as follows. In other words, conventionally, as mentioned above, the protrusion of the cover is fitted into the window to support the cover, but when parts are processed, burrs form on the window or protrusion, making it difficult to remove the protrusion from the window. The pressing force required for the cover often varied depending on the case.
On the other hand, this problem does not occur because the means for supporting the cover in this invention does not have a fitting structure such as a protrusion and a window.

As shown in FIGS. 3 and 4, a and d, the protrusion 12 provided on the outer lower side of the peripheral wall 8b provides a comfortable insertion feel when the body 7 is fitted into the recess 5a of the main body case. This is to prevent the body 7 from falling out of the recess 5a after fitting.

As shown in FIGS. 3, 4, and 5, a protrusion 13 is provided on the inner lower side of the peripheral wall 8a. This protrusion 13 is a stopper that prevents the cover 6 from falling off the body 7 when the cover 6 is pushed in. That is, when the cover 6 falls off to one side as shown in FIG. Diagram b
Make sure that you are pushed into the correct position like this.
If the protrusion 13 does not have the effect of preventing the cover 6 from falling off, if the cover 6 falls off to one side, the cover 6
may not press push button 1 correctly, and press button 1
fails to start. Moreover, when the cover 6 is returned to the position shown in FIG. 5a by the push-up force of the push button 1, this automatic return also fails.

As shown in FIGS. 3, 4, and 5, and FIG. A strip 14 is provided. This is a return guide for smoothly sliding the cover 6 to return it to its original position, that is, the position above the protrusion 10, after the cover 6 is pushed in.

As shown in Figures 3 and 4a,
On both sides of the cut 11, there are peripheral walls 8 along the cut 11.
A protrusion 15a is provided on the a side, and a protrusion 15b is provided on the peripheral wall 8b side. These are for reinforcing the peripheral wall 8, and the protrusions 15b also have the effect of preventing the body 7 from shaking when it is fitted into the recess of the main body case.
The protrusion 15a needs to be lower than the protrusion 15b. This means that when pushing in the cover 6, the surrounding wall 8
This is because it is necessary to allow a to expand outward.

As mentioned above, there is a groove 1 on the upper end of the peripheral wall 8 and on the back surface.
7, the cover 6 can be pushed in with a small pressing force. The reason for this is explained as follows. As shown in FIG. 6a, no groove is provided on the back surface of the outward flange 18 provided at the upper end of the peripheral wall 8a, and a protrusion 10 is provided at a position immediately below the lower surface of the outward flange 18. if you did this,
Since there is almost no difference in height between the lower surface of the outward flange 18, that is, the deformation base point of the peripheral wall 8a, and the protrusion 10, that is, the load point when pushing in the cover 6, the protrusion 10 does not move outward even when the cover 6 is pushed in. The peripheral wall 8a is difficult to expand. Therefore, a large pressing force is required to push the cover 6 in. On the other hand, in the embodiment of the invention shown in FIG. 6b, the bottom surface of the groove 17,
That is, since there is a sufficient difference in height between the deformation base point of the peripheral wall 8a and the protrusion 10, when the cover 6 is pushed in, the protrusion 10 can be moved outward with only a slight deformation of the deformation base point at the upper end of the peripheral wall 8a, and the peripheral wall 8a spreads easily. Therefore, only a small pressing force is required to push the cover 6 in.

Note that if only a height difference between the deformation base point of the peripheral wall 8a and the protrusion 10 is created, the outward flange 18
Instead of forming the groove 17 in the groove 17, it is sufficient to move the formation position of the protrusion 10 downward in FIG. 6a.
Then, the attachment position of the cover 6 supported by the protrusion 10 also moves downward. However, since there needs to be sufficient space between the cover 6 and the push button switch 1, the height of the entire circumferential wall must be increased by the amount that the position of the protrusion 10 is lowered to create a gap between the cover 6 and the push button switch 1. Naturally, the push button cover device becomes bulky and additional installation space is required. Therefore, in order to facilitate the deformation of the peripheral wall 8a and improve the push-in operability of the cover 6 without increasing the bulk of the push button cover device, the groove 17 is formed on the back surface of the outward flange 18 as described above. Two conditions are required: moving the deformation starting point of the peripheral wall 8a upward, and at the same time forming the protrusion 10 at a position lower than the bottom surface of the groove 17.

[Effects of the invention] The push button cover device according to this invention is constructed as described above, and since the cover is a plate-shaped body, no matter which position on the cover is pressed, the push button below it can be reliably pressed. It can be pushed and the cover is easy to operate.

In particular, an outward flange is provided at the upper end of the peripheral wall, which is imparted with elasticity by the cut and is provided with a protrusion that supports the cover, and a groove is provided on the back surface of this flange, and the second protrusion is inserted into the groove. Since the cover is formed at a lower position, when the cover is pushed in, the peripheral wall can easily expand and the protrusions can move outward, making it possible to push the cover in with a small pressing force, improving the operability of the cover. Or the operating feel will be extremely good.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a conventional push button cover device, Figs. 2 a and b are longitudinal sectional views showing how the push button cover device is attached to the front surface of the push button, and Fig. 3 is an exploded perspective view of the conventional push button cover device. FIG. 4A is a bottom view of the body of the push button cover device; FIG. 4B is a sectional view taken along line A-A in a; FIG. 4C is a plan view; is B- in a
A sectional view taken along line B, Figures 5a to 5c are longitudinal sectional views illustrating the pushbutton cover device attached to the front surface of the pushbutton and its operation, and Figure 6a is a conventional example in which no groove is provided in the flange. FIG. 1B is an explanatory diagram of the peripheral wall of the embodiment according to the invention, in which a groove is provided in the flange. 6...Cover, 7...Body, 8, 8a, 8b
...Peripheral wall, 9...Protrusion to prevent upper part from coming off, 10
...Protrusion that supports the cover, 11...Notch, 14
... Return guide, 16 ... Outward flange, 17
……groove.

Claims (1)

[Claims for Utility Model Registration] (1) A cover that covers a push button, and a frame-shaped body having a peripheral wall that surrounds the cover and guides the push-button operation, and this body has an upper part of the inner surface of the peripheral wall. A cover device for a push button having a first protrusion that prevents the cover from coming off when the cover is removed, wherein the cover is a flat plate-like body, and the body is located at a position below the first protrusion on the inner surface of the periphery thereof. It has a second protrusion that supports the cover and also has a third protrusion that prevents the cover from falling off at a position lower than the second protrusion, and the protrusion is provided on both sides of the second protrusion. A notch is provided for imparting elasticity to the provided peripheral wall portion, and
The peripheral wall has an outward flange at the upper end, a groove is provided on the back side of the flange along the edge of the peripheral wall, and the second protrusion is formed at a position lower than the bottom surface of the groove. Cover device for push buttons. (2) The push button according to claim 1 of the utility model registration claim, in which the peripheral wall is provided with a cover return guide consisting of a protruding strip that increases in the amount of protrusion from the peripheral wall as it goes upward, below the protrusion that supports the cover inside the peripheral wall. cover device.