JPH04115727U - Contact rubber key top mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent the occurrence of a gap between the key top and the contact rubber, and to realize a contact rubber key top mounting structure with good fitting performance. [Structure] A recess (4) is provided at the bottom of the key top (1), a protrusion (5) is formed on the top (2a) of the contact rubber (2) so as to face it, and the protrusion (5) In the key top mounting structure of the contact rubber (2), in which the recess (4) is fitted and fixed, a part of the protrusion (5) of the contact rubber (2) is continuous from the top to the bottom of the protrusion. A slit (10) is provided,
And a part of the top part (2a) has the slit (1).
A groove (11) is formed which communicates with the bottom surface of the protrusion (5) and another part of which communicates with the outside from the bottom surface of the protrusion (5).

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is applied to the key top mounting structure of contact rubber used in telephones, etc. related.

0002

[Conventional technology]

FIG. 6 is a side sectional view showing a conventional example of this type of key top mounting structure. In the figure, 1 is a key top, 2 is a contact rubber, and the contact rubber is The bar 2 has a skirt portion 2a and a conductive portion 3.

0003 FIG. 7 is a plan view of the key top 1, and FIG. 8 is a plan view of the contact rubber 2. be. A recess 4 is provided in the bottom 1a of the key top 1, and a recess 4 is provided in the bottom 1a of the key top 1. A protrusion 5 is formed on the top portion 2b of the contact rubber 2. Note that the protrusion 5 The width of the recess 4 is equal to or slightly larger than the width of the recess 4.

0004 FIG. 9 is a side sectional view showing the state of the conventional example after the key top is attached. With the above configuration, the recess 4 of the key top 1 is connected to the protrusion 5 of the contact rubber 2. Push it in the direction of arrow A as shown in Figure 6 so that it fits, and attach it to the contact rubber 2. It was attached.

[0005]

[Problem that the idea aims to solve]

However, according to the prior art having the above-mentioned configuration, as shown in FIG. When the concave part of the contact rubber is pushed into the protrusion of the contact rubber, air is released into the fitting part a. The key top and contact rubber may not fit together completely. There was a problem in that a gap b was created between the two.

[0006] In view of the above problems, the present invention has a structure that bleeds air from the mating part, and the keypad A contact rubber that prevents gaps between the contact rubber and the contact rubber and has good fitting performance. The purpose is to realize a key top mounting structure.

[0007]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has a recess in the key top and a contact rubber. The fitting portion formed by the protrusion is communicated with the outside.

[0008] In other words, the present invention provides a recess at the bottom of the key top, and A protrusion is formed on the top of the contact rubber, and the recess is fitted and fixed to the protrusion. In the contact rubber key top mounting structure, the contact rubber A continuous slit is provided in a part of the protrusion of the bar from the top to the bottom of the protrusion. A portion of the top portion communicates with the bottom surface of the slit and another portion of the protrusion. It is characterized by forming a groove that communicates with the outside from the bottom surface of the part.

[0009]

[Effect]

With the above configuration, this invention allows the concave part of the key top to be connected to the protrusion part of the contact rubber. Push it in so that it fits. At this time, the concave part of the key top and the protrusion of the contact rubber should be The fitting part formed by the starting part communicates with the slit of the contact rubber. It communicates with the outside through the groove. Therefore, it is necessary to push the recess further into the protrusion. As a result, the air inside the fitting portion is pushed out and air is vented.

0010

【Example】

Examples will be described below according to the drawings. FIG. 1 is a side sectional view showing one embodiment of the present invention. In the figure, 1 is a key top, 2 is a contact rubber, and the contact rubber is The bar 2 has a skirt portion 2a and a conductive portion 3.

[0011] FIG. 2 is a plan view of the key top 1, and FIG. 3 is a plan view of the contact rubber 2. be. A recess 4 is provided in the bottom 1a of the key top 1, and a recess 4 is provided in the bottom 1a of the key top 1. A protrusion 5 is formed on the top portion 2b of the contact rubber 2. Note that the protrusion 5 The width of the recess is equal to or slightly larger than the width of the recess.

0012 10 is a part of the protrusion 5 of the contact rubber 2 from the top to the bottom of the protrusion 5. It is a continuous slit. 11 is attached to the top part 2b of the contact rubber 2. A part of the groove 11 communicates with the bottom surface of the slit 10 and the other part communicates with the bottom surface of the slit 10. The bottom surface of the projection 5 communicates with the outside. In this embodiment, the groove 11 is a protrusion. It traverses the bottom surface of the part 5 at a substantially right angle, and if the width of the groove 11 is Y and the width of the protrusion is X, , Y>X.

[0013] FIG. 4 is a side sectional view showing the state after the key top of this embodiment is attached. With the above configuration, the recess 4 of the key top 1 is connected to the protrusion 5 of the contact rubber 2. Push it in the direction of arrow A so that it fits, and attach it to the contact rubber 2. At this time, it is formed by the recess 4 of the key top 1 and the protrusion 5 of the contact rubber 2. The fitted fitting part a includes a slit 10 of the contact rubber 2 and a groove 11 communicating with the slit 10 of the contact rubber 2. communicates with the outside via. Therefore, the recess 4 can be further pushed into the protrusion 5. As a result, the air inside the fitting part a is pushed out to the outside, and air is vented.

[0014] FIGS. 5(a) and 5(b) are plan views showing other embodiments of the present invention. The shapes of the air venting slits 10 and grooves 11 formed in the contact rubber 2 are as follows: The groove 11 has the condition that the slit 10 is continuous from the top to the bottom of the protrusion 5. A part communicates with the bottom surface of the slit 10 and another part communicates with the bottom surface of the protrusion 5. It suffices if the condition that the two elements are connected to the outside is satisfied, and as shown in Fig. 5(a), As shown in FIG. A similar effect can be obtained by cutting out a corner of the portion 5.

[0015]

[Effect of the idea]

As explained in detail above, according to the present invention, a recess is provided at the bottom of the key top. A protrusion is formed on the top of the contact rubber so as to face this, and a protrusion is formed on the protrusion. In the contact rubber key top mounting structure that fits and fixes the recessed part. , a part of the protrusion of the contact rubber is continuous from the top to the bottom of the protrusion. a slit is provided in the top portion, a portion of which communicates with the bottom surface of the slit; The other part forms a groove that communicates with the outside from the bottom surface of the protrusion, so the key top The fitting part formed by the concave part of the contact rubber and the protruding part of the contact rubber can be communicated with the outside. I can do that.

[0016] This makes it possible to bleed air from the mating area and connect the key top and contact. A contact rubber key that prevents gaps between the contact rubber and the contact rubber and provides a good fit. This has the effect of realizing a top mounting structure.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view showing the key top of the same embodiment.

FIG. 3 is a plan view showing the contact rubber of the same embodiment.

FIG. 4 is a side sectional view showing the state of the same embodiment after the key top is attached.

FIG. 5 is a plan view showing another embodiment of the present invention.

FIG. 6 is a side sectional view showing a conventional example.

FIG. 7 is a plan view showing the key top of the conventional example.

FIG. 8 is a plan view showing the conventional contact rubber.

FIG. 9 is a side sectional view showing the state of the conventional example after the key top is attached.

[Explanation of symbols]

1 Key top 2 Contact rubber 2b Top part 4 Recess 5 Protrusion 10 slits 11 Groove

Claims (1)

[Scope of utility model registration request] 1. A contact rubber key top mounting structure in which a recess is provided at the bottom of the key top, a protrusion is formed on the top of the contact rubber opposite to the recess, and the recess is fitted and fixed to the protrusion. A part of the protrusion of the contact rubber is provided with a continuous slit from the top to the bottom of the protrusion, and in the top part, a part communicates with the bottom of the slit and the other part communicates with the bottom of the slit. A contact rubber key top mounting structure characterized by forming a groove that communicates with the outside from the bottom of the protrusion.