CN203445034U

CN203445034U - Button structure

Info

Publication number: CN203445034U
Application number: CN201320335560.3U
Authority: CN
Inventors: 邹志强
Original assignee: KUNSHAN XUZHAN RUBBER AND PLASTIC Co Ltd
Current assignee: KUNSHAN XUZHAN RUBBER AND PLASTIC Co Ltd
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2014-02-19
Anticipated expiration: 2023-06-09

Abstract

This utility model discloses a button structure, comprising an auxiliary circuit board, a metal elastic sheet positioned above the auxiliary circuit board, and a composite type silica gel button arranged over the metal elastic sheet. The composite silica gel button comprises a silica gel button basal body. The upper surface of the silica gel button basal body is provided with a first TPU layer; an image layer is positioned on the surface of the first TPU layer and the image layer is opposite to the silica gel button basal body; the lower surface of the silica gel button basal body is provided with a second TPU layer. The button structure is obtained through two layers of TPU materials connected to the silica gel button basal body to from a composite silica gel button. Compared with the button made from pure silica gel, the composite silica gel button has strong capability of resisting tearing and abrasion, doesn't absorb dust because of static electricity, and improves the safety performance of the button and elongates the service life.

Description

A kind of press-key structure

Technical field

The utility model relates to a kind of press-key structure, especially a kind of press-key structure with composite silicon rubber key.

Background technology

Silica gel is the characteristic such as absorption property is high, Heat stability is good, good springiness, stable chemical nature, mechanical strength height owing to having, be widely used in the button aspect of computer, cell phone keyboard or other electron component, but the mechanical performances such as the tensile strength of silica gel and tearing toughness are poor, silica gel push-button easily weares and teares and tears, shorten the useful life of silica gel push-button, affected the safety in utilization of silica gel push-button.

Utility model content

The purpose of this utility model is to provide a kind of press-key structure, it has composite silicon rubber key, therefore there is stronger tear-proof and wear-resisting characteristic, avoided pure silica gel push-button to tear and the problem such as wearing and tearing, improve the fail safe that composite silicon rubber key is used, extended the useful life of composite silicon rubber key.

To achieve these goals, the utility model is by the following technical solutions:

A kind of press-key structure, comprise auxiliary circuit board, be located at the metal clips of described auxiliary circuit board top and be located at the composite silicon rubber key of described metal clips top, described composite silicon rubber key comprises silica gel push-button matrix, the upper surface of described silica gel push-button matrix is provided with a TPU layer, and the lower surface of described silica gel push-button matrix is provided with the 2nd TPU layer.

Further, in above-mentioned press-key structure, on a described TPU layer, be provided with figure layer with the right surface of described silica gel push-button matrix phase.

Further, in above-mentioned press-key structure, the thickness of a described TPU layer and/or described the 2nd TPU layer is 0.05-0.3mm.

Further, in above-mentioned press-key structure, the thickness of described silica gel push-button matrix is 0.5-3.5mm.

Further, in above-mentioned press-key structure, the thickness of described figure layer is 0.02-0.05mm.

Preferably, in above-mentioned press-key structure, described silica gel push-button base shape is trapezoidal or rectangle or cylindrical.

The beneficial effects of the utility model are: a kind of press-key structure that the utility model provides is by two-layer TPU material and silica gel push-button matrix phase, to be connected to form composite silicon rubber key to be made, compare with pure silica gel push-button, this composite silicon rubber key has stronger tear-proof and the performance such as wear-resisting, avoided pure silica gel push-button to tear and the problem such as wearing and tearing, can not adsorb because of static the impurity such as dust yet, improve the security performance that composite silicon rubber key is used, extended the useful life of composite silicon rubber key.

Accompanying drawing explanation

Fig. 1 is generalized section of the present utility model.

1, a TPU layer; 2, figure layer; 3, silica gel push-button matrix; 4, the 2nd TPU layer; 5, metal clips; 6, auxiliary circuit board.

Embodiment

Below in conjunction with accompanying drawing, and the utility model is described in further detail by embodiment.

As shown in Figure 1, a kind of press-key structure that the utility model provides, comprise auxiliary circuit board 6, be located at the metal clips 5 of described auxiliary circuit board 6 tops and be located at the composite silicon rubber key of described metal clips 5 tops, described composite silicon rubber key comprises described silica gel push-button matrix 3, the upper surface of described silica gel push-button matrix 3 is provided with a TPU layer 1, surface relative with described silica gel push-button matrix 3 on a described TPU layer 1 is provided with figure layer 2, the lower surface of described silica gel push-button matrix 3 is provided with the 2nd TPU layer 4, surface relative with described silica gel push-button matrix 3 on described the 2nd TPU layer 4 is not provided with figure layer, be that metal clips 5 tops dispose not the 2nd TPU layer 4 of dimensional printed chart layer, the 2nd TPU layer 4 is bonded together by thermoforming way with the lower surface of silica gel push-button matrix 3, on the upper surface of silica gel push-button matrix 3 and a TPU layer 1, the figure layer 2 of printing is bonded together by hot-forming, wherein, being shaped as of silica gel push-button matrix 3 is trapezoidal, also can be rectangle or cylindrical.

Further, the thickness of a TPU layer 1 and/or the 2nd TPU layer 4 is 0.05-0.3mm.

Further, the thickness of silica gel push-button matrix 3 is 0.5-3.5mm.

Further, the thickness of figure layer 2 is 0.02-0.05mm.

During concrete use, by pressing composite silicon rubber key and then pressing metal clips 5, metal clips 5 moves downward contact auxiliary circuit board 6, by the circuit on auxiliary circuit board 6, connects configuration, thereby realizes transmission and the conversion of the signal of telecommunication.

The utility model is by being respectively arranged with the TPU layer of characteristics such as having tear-proof and resistance to wear on two surfaces up and down of silica gel push-button matrix; silica gel push-button matrix is effectively protected; avoided silica gel push-button matrix easily to tear and wear phenomenon; also without paste electrostatic protection film in following process process, prevent static and adsorb the impurity such as dust; improve the safe application performance of composite silicon rubber key, extended the useful life of composite silicon rubber key.

What need statement is; the foregoing is only preferred embodiments of the present utility model; in technical scope disclosed in the utility model, the variation that any those skilled in the art of being familiar with easily expect or replacement, within all should being encompassed in protection range of the present utility model.

Claims

1. a press-key structure, comprise auxiliary circuit board, be located at the metal clips of described auxiliary circuit board top and be located at the composite silicon rubber key of described metal clips top, it is characterized in that, described composite silicon rubber key comprises silica gel push-button matrix, the upper surface of described silica gel push-button matrix is provided with a TPU layer, and the lower surface of described silica gel push-button matrix is provided with the 2nd TPU layer.

2. press-key structure according to claim 1, is characterized in that, on a described TPU layer, is provided with figure layer with the right surface of described silica gel push-button matrix phase.

3. press-key structure according to claim 1, is characterized in that, the thickness of a described TPU layer and/or described the 2nd TPU layer is 0.05-0.3mm.

4. press-key structure according to claim 1, is characterized in that, the thickness of described silica gel push-button matrix is 0.5-3.5mm.

5. press-key structure according to claim 2, is characterized in that, the thickness of described figure layer is 0.02-0.05mm.

6. according to the press-key structure described in claim 1 or 4, it is characterized in that, described silica gel push-button base shape is trapezoidal or rectangle or cylindrical.