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Key switch construction

A key and switch technology, applied in the field of thin key switch structure, to achieve the effect of thinning

Inactive Publication Date: 2011-11-09
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned conventional key switch structure, the key cap 11, the first and the second link members 12, 13 and the frame 15 are stacked in layers. Moreover, the frame 15 is constituted as a complex structure that needs to have a certain thickness, therefore, it limits thinning, and there is a problem that it cannot be used in PDAs (personal digital assistants: portable information terminals) and small personal computers that require portability. problem of use

Method used

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  • Key switch construction
  • Key switch construction
  • Key switch construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] exist figure 1 , figure 2 Among them, the key switch 20 of Embodiment 1 includes: a key cap 21; a first link member 22 arranged to slide relative to the key cap 21; a second link member 23 arranged to be rotatable relative to the key cap 21; The button cap 21 bends when pressed, and the trumpet drum (elastic member) 24 that makes the key cap 21 return to its original position when the pressing force is released; the resin sheet 25 that holds the first and second link members 22, 23; There is a diaphragm 26 disposed under the resin sheet 25 , which has a contact portion immediately below the horn drum 24 ; and a bottom plate 27 disposed under the diaphragm 26 .

[0028] On the inside of the key cap 21, there are provided: a support portion 21a inserted into a hole 22b formed on one end portion 22a of the first link member 22; and a support portion rotatably supporting one end portion 23a of the second link member 23. Section 21b. Such as figure 2 As shown, the sup...

Embodiment 2

[0042] Next, Embodiment 2 will be explained. Figure 6 It is a perspective view which shows the 1st link member of Example 2. Figure 6 In the second embodiment, the first link member 31 of the second embodiment is formed of a flat member as a whole as in the first embodiment, and is substantially U-shaped as a whole. On one end portion 31a of the first link member 31, a hole 31b into which the support portion 21a formed on the key cap 21 is inserted is formed, and the other end portion 31c of the first link member 31 is fixed to the resin sheet 32. The upper part is also formed into a flat plate shape. Forming the first link member 31 in a flat shape contributes to thinning the key switch structure.

[0043] A hole 31f is formed in the other end portion 31c of the first link member 31 . A cut-and-raised portion 32e of the resin sheet 32 ​​described later is fitted into the hole 31f. A step portion 31d is formed at the center portion of the first link member 31, and a notc...

Embodiment 3

[0048] Next, Embodiment 3 will be explained. Figure 9 It is a perspective view which shows the 1st link member of Example 3. Figure 9 In the third embodiment, the first link member 41 of the third embodiment is formed of a flat member as a whole as in the first embodiment, and is substantially U-shaped as a whole. On one end portion 41a of the first link member 41, a hole 41b into which the support portion 21a formed on the key cap 21 is inserted is formed, and the other end portion 41c of the first link member 41 is fixed to the resin sheet 42. The upper part is also formed into a flat plate shape. Forming the first link member 41 in a flat shape contributes to the thinning of the key switch structure.

[0049] A circular hole 41f is formed in the other end portion 41c of the first link member 41 . A punched portion 42e of the resin sheet 42 described later is fitted into the circular hole 41f. A stepped portion 41d is formed at the center portion of the first link memb...

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PUM

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Abstract

The invention provides a key switch structure of realizing thin without damaging the key cap. A resin sheet (25) is disposed at the upper part of the membrane (26) with a contact point part. A first supporting part (25a) and a second supporting part (25b) are formed on the resin sheet (25). The first supporting part (25a) has an oblong part (25d), and the flat end (22c) of the first connecting rod part (22) is overlapped and fixed on the oblong part (25d). The second supporting part (25b) has a cutting part (25f), on which the flat end (23c) of the second connecting rod part (23) is mounted in sliding.

Description

technical field [0001] The present invention relates to a key switch structure of a keyboard used as an input device in information processing equipment, measurement equipment, medical equipment, etc., and particularly relates to a key switch structure that achieves thinning without reducing operability. Background technique [0002] Conventionally, for keyboards used in portable personal computers and the like, it is necessary to secure the so-called operability that the key caps can be lowered without inclination no matter which part of the key cap is pressed. Therefore, in the conventional key switch structure, a link mechanism is provided at the lower part of the key cap. As a key switch structure including a link mechanism at the lower portion of the key cap, there is, for example, a structure disclosed in JP-A-2001-229764. [0003] Figure 13 It shows the structure of the key switch provided with the link mechanism disclosed in the conventional said document. exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/12H01H13/70H01H13/704
Inventor 千叶俊美山田茂
Owner OKI ELECTRIC IND CO LTD