JP4360144B2 - Case-integrated button - Google Patents

Description

  The present invention relates to a case-integrated button structure. In particular, the button is integrally formed by resin molding.

  As a button structure used in a conventional electronic device, there is generally a button structure using a part having a button structure different from a casing (see, for example, Patent Document 1). FIG. 3 shows a conventional button structure described in the above document.

  In FIG. 3, by pushing the push button portion 101, the push button portion 101 rotates with the thin portion 102 as a fulcrum, and the rotation trajectory draws an arc and comes into contact with the rotation stop member 103 to stop the push button portion 101. A switch operation configuration having a structure provides a configuration that can be integrally formed with the simplest two-sided mold. However, it is a separate part configuration from the case.

  If the button structure used in a conventional electronic device is used as a case-integrated button structure, for example, the structure shown in FIG. 4 is obtained.

In FIG. 4, the push button unit 201 formed integrally with the housing 200, the relay unit 202 that transmits the movement of the push button unit to the switch installed in the housing, the push button unit 201, and the housing 200 are connected. In the hinge button structure using resin elasticity provided with the connecting thin wall portion 204, the switch is operated by the deformation of the hinge button root R-shaped portion 203 and the thin wall portion 204, which are the fulcrum of elastic deformation.
Japanese Patent Laid-Open No. 11-149846

  However, in the conventional configuration, since the button portion has a separate piece configuration, there is a problem that the cost is high and an attachment error is likely to occur.

  In addition, the hinge button structure that uses the resin elasticity formed integrally with the housing has a problem that if the button part is broken, it is necessary to replace the entire housing, resulting in a large loss cost. It was.

  The present invention solves the above-described conventional problems, and in a hinge button structure using resin elasticity formed integrally with a housing, the stress concentrated on the hinge button root R-shaped portion serving as a fulcrum of elastic deformation is dispersed. An object of the present invention is to provide a case-integrated button structure that is less likely to be damaged by reducing distortion and has cost merit.

In order to achieve this object, the case-integrated button of the present invention is a hinge button root R-shaped portion that is connected to the case, the push button portion, and a second thin portion described later and has one end serving as a fulcrum for elastic deformation. A first thin portion connected to the casing and the other end connected to the push button portion, and arranged on both sides of the hinge button root R-shaped portion of the first thin portion, each side surface of the hinge button root Connected to the vicinity of the side surface of the R-shaped portion and the casing, and connected to two second thin portions whose thickness is approximately 2/3 of the first thin portion, and the rear surface of the first thin portion, The movement of the push button part is transmitted to the switch in the casing with the direction orthogonal to the push direction of the push button part as the pushing direction via the fulcrum of the first thin part, and the upper surface is the rear surface of the push button part It has a relay part with an R shape at the bottom according to the inclination of the lower part. It has a configuration.

  With the structure described above, according to the present invention, it is possible to obtain a button structure in which stress strain is reduced, it is difficult to break, and the cost is low.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a structure for providing a case-integrated button according to the present invention. A push button portion 1 formed integrally with the housing 10, a relay portion 2 that transmits the movement of the push button portion to a switch installed in the housing, and a thin portion that connects the push button portion 1 and the housing 10. In the hinge button structure using the resin elasticity provided with A4, in order to disperse the stress concentrated on the hinge button root R-shaped portion 3 which is a fulcrum of elastic deformation and reduce the stress distortion, a thin wall is formed beside the root R-shaped portion 3. By providing the part B5, the stress concentrated on the root R-shaped part 3 can be dispersed and the stress strain can be reduced.

  FIG. 2 is a front view and a side view of the case-integrated button structure of the present invention. The thickness of the thin part B5 is approximately 2/3 of the thickness of the thin part A4 connecting the push button part 1 and the housing 10, and the R of the root R-shaped part is made as large as possible and the relay part 2 By taking a large R below the connecting portion with the thin-walled portion A4, the strength can be improved and the stress can be dispersed and the stress strain can be reduced without impairing the elastic deformation.

  The casing-integrated button according to the present invention is useful as a casing-integrated button used in electronic devices and the like because it can reduce a stress strain, and can obtain a button structure that does not easily break and costs less.

The perspective view which shows the structure in the Example of this invention. 2 is a front view and a side view showing the configuration of the embodiment of the present invention. Front view showing configuration of conventional technology The perspective view which showed the structure of the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Push button part 2 Relay part 3 Root R shape part 4 Thin part A
5 Thin part B
DESCRIPTION OF SYMBOLS 10 Case 101 Push button part 102 Thin part 103 Rotation stop member 200 Case 201 Push button part 202 Relay part 203 Root R shape part 204 Thin part

Claims (1)

A housing,
A push button,
A first thin portion connected to the housing as a hinge button root R-shaped portion, one end of which corresponds to a fulcrum of elastic deformation, connected to a second thin portion described later, and the other end connected to the push button portion;
The first thin-walled portion is disposed on both sides of the hinge button root R-shaped portion, and each side surface is connected to the vicinity of the side surface of the hinge-button root R-shaped portion and the casing, and the thickness is roughly the first thin-walled portion. Two second thin portions that are 2/3,
A switch in the housing that is connected to a rear surface of the first thin portion and that moves the push button portion through a fulcrum of the first thin portion, and a direction perpendicular to the pressing direction of the push button portion is a pressing direction. A relay portion having a bottom surface with an R shape so that the upper surface is aligned with the inclination of the lower rear surface of the push button portion,
A housing integrated button.

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