Surface fitting and scissors foot supported key switch device

Abstract

The present invention discloses a surface fitting and scissors foot supported key switch device. The surface fitting and scissors foot supported key switch device comprises a keycap, an elastomer, a switch loop having a switch contact, a supporting plate having a matching part, and a scissors foot support having the upper and lower matching parts. The scissors foot support is in rotatable or slip connection with the keycap and the matching part of the support plate respectively via the upper and lower matching parts and forms a synchronous linkage supporting structure by the mutual force transmission, thereby guaranteeing that the keycap does the elevating motion parallel with the supporting plate. The surface fitting and scissors foot supported key switch device is characterized in that a concave bottom surface in the keycap is equipped with the key matching protruding shoulder 32, the key matching protruding shoulder 32 and a key inverted buckling boss 33 of the keycap form a matching part of the keycap, and the upper matching part of the scissors foot support is composed of a scissors upper end upper plate surface 43 and a scissors upper end plate lower surface 44. If the problems that the wear resistance of the scissors foot support, the keycap and the supporting plate can be improved and a thinner metal plate can be used to produce the scissors foot support to simultaneously reduce the material cost and the height of a keyboard further, can be solved, a conventional sheet metal scissors foot support can substitute for a conventional widely used plastic scissors foot support.

Description

[0001] Priority Statement: [0002] Claims 1, 7, 12-15 of the present invention, claims 42-46 of the invention patent application with application number 2014101569946 submitted to the State Intellectual Property Office of China on April 18, 2014, and the priority of the corresponding embodiments; [0003] Claims 2, 6, 7, 12-15 of the present invention, claim 15-18 of the invention patent application submitted to the State Intellectual Property Office of China on August 4, 2014 with the application number 2014103786124 and the priority of the corresponding embodiments ; [0004] Claims 3-16 of the present invention, claiming the priority of claims 61-84 and corresponding embodiments of the invention patent application with application number 2014105022929 submitted to the State Intellectual Property Office of China on September 27, 2014; [0005] Claims 3-16 of the present invention require the priority of claims 61-86 and corresponding embodiments of the invention patent appli...

AI Technical Summary

Problems solved by technology

[0023] 1. The matching part and the lower matching part of the scissors foot support 16 are formed by punching sheet metal to form a square boss, and the corners of the square boss are respectively matched with the matching parts of the keycap and the support plate. The keycap 1 The corner of the boss of the mating part scissor foot support 16 will accelerate the wear of the keycap and the support plate, causing the scissor foot support, keycap, and support plate to lose their accuracy quickly

[0024] 2. The corner of the boss with a square cross-section is chamfered----it can be inverted into a straight face, a circular arc surface, and an inverted arc surface. The chamfering process of sheet metal is more difficult (especially for thinner metal plates ), and there are poor chamfering accuracy and poor surface finish

[0026] 4. When the scissor foot support 16 adopts a thinner metal plate (such as a metal plate of 0.08mm---0.15mm), the space between the upper sliding part 6 of the scissors between the key undercut mating surface 3c and the key mating plane 3b cannot be injected production (see figure 1 -- Figure 5 The key undercut mating surface 3c corresponds to the key mating plane 3b), when the height of this space is 0.08mm---0.15mm, the injection mold adopts 0.08mm---0.15mm alloy sheet for core pulling, and the sheet is both Cannot be processed and has no strength

[0027] 5. The matching part of the scissor foot support 16 cannot be rounded too much, and the current popular keycap installation method cannot be adopted, and the current popular scissor foot support 16 installation method cannot be adopted

[0028] 6. The existing sheet metal scissor foot support adopts a plate thickness of more than 0.4mm, and the material cost is high, which affects the further lower height of the keyboard (two existing sheet metal scissor foot supports are stacked together to a thickness of 0.8mm)

[0029] How to improve the wear resistance of scissor foot supports, keycaps, and support plates; how to use thinner metal plates to produce scissor foot supports to reduce material costs, and at the same time achieve a further lower height of the keyboard, is the existing sheet metal scissor foot supports Replace the commonly used plastic scissor feet support problem

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