Heterogeneous silica gel key and keyboard structure

Abstract

The utility model discloses a heterogeneous silica gel key and a keyboard structure. The heterogeneous silica gel key comprises a supporting part, an elastic connecting part and a pressing part which are integrally formed by adopting a soft silica gel material, a cylindrical groove is axially formed in the pressing part, a first composite part is compositely filled in the cylindrical groove, a layer of second composite part is compositely arranged on the upper surface of the pressing part, and the first composite part and the second composite part are integrally formed. The material hardness of the first composite part and the second composite part is larger than that of the supporting part, the elastic connecting part and the pressing part which are integrally formed by soft silica gel materials. According to the utility model, the composite part which is made of a non-silica gel material and has hardness greater than that of a silica gel material is compounded into one side of the pressing part of the silica gel key contacted with the key cap or one side of the pressing part corresponding to the shaft core, and the rebound force of the pressing part is more excellent due to the existence of the composite part, so that the pressing hand feeling of the key is effectively improved, and the service life of the key is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to keyboard technical field, especially a kind of heterogeneous silica gel key and keyboard structure. BACKGROUND

[0002] Reference Figure 1 , keyboard mainly includes keycap 20, scissor leg 30 (X-shaped support) and silica gel key 10 are set below keycap, scissor leg 30 is used to fix and stabilize keycap 20, and then a layer of circuit layer 40 is set in bottom portion is matched. Among them, reference Figure 2 , silica gel key 10 is inverted bowl, and it mainly includes support part 11, elastic connecting part 12 and pressing part 13, the support part 11 of bowl mouth is installed on circuit layer 40 and plays the role of support, and the pressing part 13 of bowl bottom is used to contact keycap 20. When pressing keycap 20, the axial outer end of pressing part 13 of silica gel key 10 first contacts keycap 20 and is driven and triggers downward by keycap 20, and then, the axial inner end of pressing part 13 exerts pressure on the inner circuit layer 40 to drive the electrode contact point 41 in circuit layer 40 to contact each other to realize conduction, and after canceling pressing, make pressing part 13 reset and drive keycap 20 reset by the elastic connecting part 12 of silica gel key 10.

[0003] Since the silica gel key 10 of the above prior art is integrally injection molded by soft silica gel material, reference Figure 3 , the return force of silica gel key 10 is low in use process, which affects the pressing operation touch feeling and service life of key, and shortens the difference between P2 and P4, so that the pressing performance is not ideal. INVENTION CONTENTS

[0004] To solve the above technical problems, the utility model provides a kind of heterogeneous silica gel key, including support part, elastic connecting part and pressing part integrally formed by soft silica gel material, the cylindrical recess is opened in the axial direction of the pressing part, the composite part one is filled in the cylindrical recess, the upper surface of the pressing part is compounded with a layer of composite part two, the hardness of the composite part one and the composite part two is greater than the hardness of the support part, the elastic connecting part and the pressing part integrally formed by soft silica gel material.

[0005] Among them, the composite part one and the composite part two are integrally formed by the same material.

[0006] Among them, the composite part one and the composite part two are integrally formed by different materials.

[0007] Further, the support part is further provided with an exhaust groove through inside and outside.

[0008] The utility model also provides a keyboard structure, including circuit layer, the silica gel key of being pasted on the upper surface of circuit layer, the key cap of setting in the upper end surface of silica gel key and the scissors foot of setting in the key cap below, silica gel key is a kind of heterogeneous silica gel key of above-mentioned structure.

[0009] Through the above technical scheme, the utility model discloses a side or corresponding shaft core side of the pressing portion of silica gel key is compounded into the composite part of non-silica gel material and the hardness greater than silica gel material, the existence of composite part makes the rebound force of pressing portion more excellent, to effectively improve the pressing feeling and life of key. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below.

[0011] Figure 1 It is the axial section structure schematic diagram of prior art keyboard structure;

[0012] Figure 2 It is Figure 1 The axial section structure schematic diagram of silica gel key in the keyboard structure shown in figure;

[0013] Figure 3 It is Figure 2 The corresponding schematic diagram of silica gel key pressing force and stroke of the structure shown in figure;

[0014] Figure 4 It is the axial section schematic diagram of heterogeneous silica gel key disclosed by the utility model;

[0015] Figure 5 It is Figure 4 The top view structure schematic diagram of figure.

[0016] Figure number indicates:

[0017] 10. silica gel key;11. support part;12. elastic connecting part;13. pressing portion;141. composite part one;142. composite part two;15. exhaust groove;20. key cap;30. scissors foot;40. circuit layer. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model.

[0019] Embodiment 1:

[0020] Reference Figures 4-5The embodiment 1 provides a heterogeneous silica gel key, which comprises a support part 11, an elastic connecting part 12 and a pressing part 13 which are integrally formed by using soft silica gel material, the support part 11 is further provided with exhaust grooves 15 which penetrate in and out, the pressing part 13 is axially provided with a cylindrical groove, the cylindrical groove is filled with a composite part one 141, the upper surface of the pressing part 13 is further provided with a composite part two 142, the hardness of the composite part one 141 and the composite part two 142 is greater than that of the support part 11, the elastic connecting part 12 and the pressing part 13 which are integrally formed by using soft silica gel material, and the composite part one 141 and the composite part two 142 are integrally formed by using the same material.

[0021] Embodiment 2

[0022] The embodiment 2 is different from the embodiment 1 in that the composite part one 141 and the composite part two 142 are integrally formed by using different materials.

[0023] Embodiment 3

[0024] The embodiment 3 provides a keyboard structure, which comprises a circuit layer 40, a silica gel key 10 which is attached to the upper surface of the circuit layer 40, a key cap 20 which is arranged on the upper end surface of the silica gel key 10, and a scissors leg 30 which is arranged below the key cap 20, and the silica gel key 10 is the heterogeneous silica gel key described in the embodiment 1 or the embodiment 2.

[0025] The silica gel key 10 is provided with the composite part one 141 and the composite part two 142 which have a hardness greater than that of the silica gel material and are arranged on the side of the pressing part 13 of the silica gel key 10 which contacts the key cap 20, the composite part one 141 and the composite part two 142 have a hardness greater than that of the support part 11, the elastic connecting part 12 and the pressing part 13 which are integrally formed by using soft silica gel material, when the pressing part 13 is pressed downward and elastically deformed, the deformation pressure of the pressing part 13 is increased due to the existence of the composite part 15, and the rebound force of the pressing part 13 is more excellent, so that the pressing feeling and the service life of the key are effectively improved.

[0026] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications of the above-described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heterogeneous silica gel key, comprising a support part (11), an elastic connecting part (12) and a pressing part (13) integrally formed by using soft silica gel material, characterized in that, The pressing part (13) is axially provided with a cylindrical recess, the cylindrical recess is filled with a composite part one (141), the upper surface of the pressing part (13) is filled with a composite part two (142), the hardness of the composite part one (141) and the composite part two (142) is greater than the hardness of the support part (11), the elastic connecting part (12) and the pressing part (13) which are integrally formed of soft silica gel material.

2. The heterogeneous silicone button of claim 1, wherein, The composite part one (141) and the composite part two (142) are integrally formed of the same material.

3. The heterogeneous silicone button of claim 1, wherein, The composite part one (141) and the composite part two (142) are integrally formed of different materials.

4. The heterogeneous silicone button of claim 1, wherein, The support part (11) is further provided with an exhaust groove (15) penetrating through the inside and the outside.

5. A keyboard structure, comprising a circuit layer (40), a silica gel key (10) attached to the upper surface of the circuit layer (40), a key cap (20) arranged on the upper end surface of the silica gel key (10), and a scissors leg (30) arranged below the key cap (20). characterized in that The silica gel key (10) is a heterogeneous silica gel key according to any one of claims 1-4.

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