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Key unit with casing

A key and shell technology, applied in the field of key units, can solve the problem of few reinforcing plates and achieve the effect of improving positioning accuracy

Inactive Publication Date: 2007-05-09
SUNARROW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the role of the stiffener described in Patent Document 1 is only to provide rigidity to the key pad and serve as a light guide plate, and there is little intention to actively adopt the stiffener as a design component of the device

Method used

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  • Key unit with casing
  • Key unit with casing
  • Key unit with casing

Examples

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Embodiment Construction

[0044] For the key unit having the housing according to the present invention, one or more metal materials selected from different types of precious metals such as magnesium, aluminum, stainless steel, titanium, copper and gold and different types of alloys can be selected. Employed to form a casing of a mobile device including a stiffener. As a manufacturing method, suitable processes such as casting, forging, and press forming can be employed. Further, the casing part integrally formed with the reinforcing plate constitutes the whole or part of the casing of the mobile device.

[0045] The metal used as the material of the casing including the reinforcing plate is not limited to a single type. For example, for a metal type that is not strong enough to form an entire housing, but provides design benefits such as color when used in a particular portion, multiple such metal materials may be used for forming.

[0046] For the key unit having the casing of the present invention...

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PUM

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Abstract

A measure for exploiting a reinforcing plate, which is made of a rigid material such as a metal or a hard resin for affording a shape retention to a rubber keypad in a key unit, not only for the shape retention but also as the functional design factor of a mobile device itself. A key unit with a casing is made such that a keypad has an operating portion formed of a rubbery elastic member and the remaining portion either formed of a rigid reinforcing plate or reinforced with the reinforcing plate. The key unit is characterized in that at least a portion of the casing of the mobile device, on which the key unit is mounted, is formed integrallywith the key unit having the reinforcing plate.

Description

technical field [0001] The present invention relates to a key unit for a mobile device such as a cellular phone or a portable information terminal device (PDA), and it includes a reinforcing plate that provides shape maintaining performance to a rubber key pad, and it also adopts A portion of the stiffener serves as a design component. Background technique [0002] A key unit is a type of composition of a mobile device such as a cellular phone or a portable information terminal device (PDA), and is a unit in which a plurality of switch operation keys (buttons) are assembled and arranged on a single sheet. A key comprises: a hard resin key top bonded to the front face of a flexible key gasket made of a flexible rubber material such as silicone rubber or thermoplastic elastomer; Plug") formed on the opposite side of the key pad at a position corresponding to the top of the key. When the circuit board including the switch assembly is closed mounted on the underside of the thu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/70G06F3/02H01H13/02H01H13/04H04M1/02H04M1/23
CPCG06F3/0202H01H13/7006H01H2209/006H01H2209/01H01H2215/012H01H2229/048H04M1/23H01H9/18
Inventor 庵原有一
Owner SUNARROW CO LTD
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