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Device actuated by key operations

A technology of equipment and key pads, which is applied to electrical components, electrical switches, circuits, etc., can solve problems such as user discomfort, sweating, and reduced equipment control

Inactive Publication Date: 2009-06-17
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, by operating the key, the user's hands or fingers may sweat, which may cause discomfort to the user.
[0005] In addition, when the key is provided on a part of the device that is held by the user, sweat may be present between the device body and the user's hand, reducing the gripability of the device, which may result in a decrease in the operability of the device.

Method used

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  • Device actuated by key operations
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  • Device actuated by key operations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0045] figure 1It is a schematic diagram showing the external configuration of a personal portable information terminal (PDA) 10 as the device of the first embodiment. In addition, in this embodiment, a PDA is used as an example of a device that operates by key operation, but for example, a digital camera (DSC), a digital video camera (DVC), an electronic dictionary, a portable device such as a notebook personal computer, Or a non-portable device such as a desktop PC.

[0046] Such as figure 1 As shown, PDA 10 has a structure in which display unit 12 and operation unit 14 are connected by hinge unit 11 , and display unit 12 and operation unit 14 are rotatably formed via hinge unit 11 . A display screen 13 composed of a liquid crystal display (LCD) or the like is provided on the display unit 12 . A plurality of keys 16 for instructing the execution of various operations of the PDA 10 or for inputting characters are arranged on the operation unit 14 .

[0047] figure 2 yes...

Embodiment approach 2

[0059] In the first embodiment described above, the contact area between the specific switch 22a located within a predetermined distance from the semiconductor element 30 and the protrusion 42a abutting on the specific switch 22a is made smaller than the other contact areas, but the following may be adopted. structure.

[0060] Image 6 It is a schematic partial sectional view of the device of this embodiment. The equipment of this embodiment and figure 1 Indicates the same as the PDA10, Image 6 is with figure 1 The section cut at the same position as the A-A line indicated in . in addition, Image 6 The casing 15 and the battery 70 are omitted.

[0061] Such as Image 6 As shown, in this embodiment, a gap 50 is provided between the specific switch 22a whose distance from the semiconductor element 30 in the surface direction of the substrate 20 is within a predetermined range and the protruding portion 42a protruding toward it, and the non-specific switch 22b and the p...

Embodiment approach 3

[0065] In this embodiment, in addition to the structure shown in Embodiment 1 or 2, the following structure is further provided.

[0066] 7(A) and (B) are schematic partial cross-sectional views of the device of this embodiment. FIG. 7(A) shows a state in which the structure of this embodiment is installed in the structure of Embodiment 1, and FIG. 7(B) shows a state in which the structure of this embodiment is installed in the structure of Embodiment 2. The device of this embodiment, and figure 1 The PDA10 represented in is identical, and Fig. 7 (A), (B) are in and figure 1 The section cut at the same position as the A-A line indicated in . In addition, the casing 15 and the battery 70 are omitted in FIG. 7 .

[0067] As shown in FIG. 7(A), in this embodiment, the contact area of ​​the specific switch 22a and the protruding portion 42a protruding toward it is smaller than other contact areas, or as shown in FIG. A gap 50 is provided between the protruding portion 42a prot...

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PUM

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Abstract

A PDA as an apparatus actuated by key operations comprises: a substrate; an exothermic semiconductor device provided on a first major surface of the substrate; a plurality of switches provided on a second major surface of the substrate; a key mat located on the side of the second major surface of the substrate; a plurality of pressure conveying portions protruding from one of the major surfaces of the key mat toward each of the plurality of switches, the one of the major surfaces facing the second major surface of the substrate; and a key that is provided on the other major surface of the key mat and that can be pressed down to the key mat. A contact face between the particular switch located within a certain range of the distance from the semiconductor device, and the pressure conveying portion corresponding to the particular switch, has a smaller area as compared to that of a contact face between the non-particular switch, which is a switch other than the particular switch, and the pressure conveying portion corresponding to the non-particular switch.

Description

technical field [0001] The present invention relates to portable devices such as personal portable information terminals (PDA), digital cameras (DSC), digital video cameras (DVC), electronic dictionaries, and notebook personal computers, or non-portable devices such as desktop personal computers, which can be operated by key operations. device of. Background technique [0002] In portable devices such as portable information terminals (PDAs) or non-portable devices such as desktop personal computers, which are operated by key operations, a plurality of keys are provided on the surface of the casing, and by pressing these keys, the operation of the device can be performed. operate. [0003] Regarding the structure of such a bond, the following structures are known. That is, this key is an integrally formed button key arranged relative to the central switch and a plurality of peripheral switches arranged around it, and is configured to operate the central switch by pressing ...

Claims

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Application Information

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IPC IPC(8): H01H13/02H01H13/14H01H13/70
Inventor 小村哲司东山信幸水原秀树
Owner SANYO ELECTRIC CO LTD
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