KR20000010993U - Key input device with waterproof means - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs.

It relates to a key input device having a waterproof means.

I. The technical problem the invention is trying to solve.

It is to provide a key input device having a waterproof means to improve the assembly.

All. The gist of the solution of the invention.

Button key; A button insert integrally injected into the key and extending downward; A metallic button cap assembled to the end of the button insert by the ring and having a stopper at its outer periphery; A ring rubber installed between the button insert and the button cap to perform a sealing function; And a button key assembly, which is installed between the button key and the ring rubber and is configured with a coil spring to restore the button key, to the support of the housing.

la. Important uses of the devise.

Applied to key input device of small terminal including watch type telephone.

Description

Key input device with waterproof means

The present invention relates to a mobile phone, and more particularly, to a key input device for inputting data, and more particularly, to a key input device having a waterproof means that can be applied to a watch type telephone that frequently invades water.

Typically, a general electronic clock is provided with at least one key for inputting data, and such a key is provided with a waterproofing means in the key to be protected from an external environment (water intrusion). A key input device having such a key waterproofing means is shown in FIG.

Looking at the configuration of a key input device having a conventional key waterproofing means,

At least one key 10 is installed in the upper housing 1. The key 10 is a means for inputting data, and a button insert 20 extending downward is installed below the key 10, and has a metal dome having a carbon contact near the end of the insert 20. 61) and a printed circuit board 60 having another carbon contact are positioned so that data is input in accordance with the key press operation.

At this time, the button key input device is provided with a waterproof means. The waterproof means receives the restoring force of the key 10 by the coil spring 30, and the ring 504 (E-ring) is installed at a predetermined position (end) of the button insert 20 so that the key 10 Departure is prevented. In addition, a ring-shaped rubber 40 is installed between the button insert 20 and the support 25 to perform a sealing function.

By means of the coil spring 30 the button key 10 attempts to go to the restoring position, and this restoring force is closed because the ring 50 provides a force in close contact with the face of the support 25, and furthermore, the ring rubber ( By 40) it is possible to remove the gap caused by the movement of the button insert 20 to prevent the intrusion of water.

However, the key input device having the waterproof means as described above has the following problems in terms of assembly.

First, assembling procedure of the key input device having waterproof means, the button insert 20 is integrally molded to the button key 10, and then the coil spring 30 is inserted into the button insert 20, and then ring-shaped. The rubber 40 was placed on the support 25, and finally, the ring 10 was used to fix the key 10 to the support 25.

From the standpoint of the assembler, the posture of inserting the coil spring 30 into the button key 10 and finally mounting it to the support 25 using the ring 50 is very inconvenient. The posture of inserting this ring into the button insert is very laborious, and the difficulty of this assembly has contributed to the increase in the man-hour and productivity.

As a result, from the standpoint of the assembler, a method for independently manufacturing a key input device and mounting it on a housing has emerged.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a key input device having a waterproof means in pursuit of improved assembly and productivity.

Another object of the present invention is to assemble a button key assembly independently to provide a key input device having a waterproof means by forcibly fitting the housing.

In order to achieve the above objects, the present invention is a button key;

A button insert integrally injected into the key and extending downward;

A metallic button cap assembled to the end of the button insert by the ring and having a stopper at its outer periphery;

A ring rubber installed between the button insert and the button cap to perform a sealing function; And

A button key assembly, which is installed between the button key and the ring rubber and is constituted by a coil spring for restoring the button key, is mounted to the support of the housing by a forced fitting method.

1 is a cross-sectional view showing the configuration of a key input device having a waterproof means according to a conventional embodiment.

Figure 2 is a cross-sectional view showing a separated state of the key input device having a waterproof means according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a mounted state of the key input device having a waterproof means according to an embodiment of the present invention.

4 is a cross-sectional view of a key input device showing a state in which a key is pressed according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: button key 20: button insert

30: coil spring 40: ring type rubber

50: this ring

Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention. In the drawings, it should be noted that like elements or parts represent the same reference numerals as much as possible. In the description of the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

Figure 2 is an exploded cross-sectional view showing a state in which the button key assembly is mounted to the housing according to an embodiment of the present invention. Referring to the drawings,

In the present invention, the button key assembly 100 is mounted to the housing 1 by a force in consideration of assembling of the assembly company. That is, the button key assembly 100 is independently assembled in consideration of assemblability, and the button key assembly 100 which is integrally assembled is forcibly pressed into the housing 1 at a predetermined position. Looking at the configuration of the button key assembly 100 in detail as follows.

The button key assembly 100 having waterproof means includes a key 10, a button insert 20 installed on the key 10 to transmit power to the metal dome 61 of the printed circuit board 60, and an e-ring. A button cap 35 fixed to an end of the insert 20 by using a 50, a ring-shaped rubber 40 installed between the button cap 35 and the button insert 20 and sealing function; The coil spring 30 is installed between the button key 10 and the ring rubber 40 to restore the key 10.

The button key assembly 100 is mounted to the support 25 of the housing in the direction of the arrow (lower direction). The support 25 has a space 1a for mounting the button key assembly 100, and a hole 1b for forcibly inserting the button cap is provided at the bottom of the space 1a.

The button cap 35 has a metallic property in order to be mounted to the support 25 by a forced insertion, the zinc alloy material is most preferred. In addition, this button cap 35 is manufactured by die casting. Since the button cap 35 is provided with a metallic property, and the support 25 is an injection molded product, the mutual force fitting method is easy from the standpoint of the assembling company. In addition, the button cap 35 is provided with a stopper 35a in the circumferential direction to expand the contact surface with the support.

As shown in Fig. 3 and Fig. 4, when the button key 10 is pressed in the direction of the arrow to input data, the key moves downward, and the button insert 20 also moves. In addition, the end of the button insert 20 presses the metal dome 61, and then the end of the button insert 20 is separated from the metal dome 61 by the elastic force of the coil spring 30. The key 10 returns to its original position. Simultaneously, data input according to the button key input operation is completed.

In this case, the return force of the button key 10 is due to the elastic force provided in the metal dome 61 and the elastic force provided in the coil spring 30.

At this time, because of the forced fitting method between the button cap 35 and the hole (1b) to maintain a completely closed state, by the ring-shaped rubber 40 installed between the button insert 20 and the button cap 35 It can be kept fully sealed.

Hereinafter, the assembly sequence of the button key assembly will be described. First, the button insert 20 is integrally molded to the button key 10, and then the coil spring 30 is inserted into the button insert 20, and then the ring rubber 40 is inserted into the button cap 35. Then, the button cap 35 is inserted into the button insert 20, and then the button cap is attached to the insert using the ring 50. This button key assembly 100 is mounted to the support 25 by force. That is, the button key assembly is independently assembled and then assembled to the support.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, the present invention has been greatly improved from the assembly point of assembly, assembling the key input device in a comfortable posture when assembling, productivity is improved, and the defect rate is also achieved.

Claims (2)

Button key; A button insert integrally injected into the key and extending downward; A metallic button cap assembled to the end of the button insert by the ring and having a stopper at its outer periphery; A ring rubber installed between the button insert and the button cap to perform a sealing function; And And a button key assembly installed between the button key and the ring-type rubber and configured to be force-fitted to the support of the housing, the button key assembly consisting of a coil spring for restoring the button key. The method of claim 1, The button cap is a zinc alloy material, the key input device having a waterproof means, characterized in that is produced by die casting.