CN210865999U

CN210865999U - Mechanical key for IC card

Info

Publication number: CN210865999U
Application number: CN201922424330.4U
Authority: CN
Inventors: 赵晓青; 万天军; 邓鸿伟; 黄小辉
Original assignee: HIERSTAR (SUZHOU) Ltd
Current assignee: HIERSTAR (SUZHOU) Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-06-26
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a mechanical type button for IC-card, it includes the adhesive linkage, the protective layer of setting at the adhesive linkage upper surface and the release layer of setting at the adhesive linkage lower surface, be provided with at least one button metal dome between protective layer and the adhesive linkage, the adhesive linkage includes end to end's border and at least one extension of being connected with the border, button metal dome portion contacts with the extension, the border of adhesive linkage reaches the border bonding from the release layer with the protective layer towards the border of button metal dome piece respectively for the protective layer, the adhesive linkage and form confined cavity gasbag from between the release layer. The mechanical key for the IC card provided by the utility model is provided with the closed air bag, thereby enhancing the strength of the key snap, improving the hand feeling of the key and meeting different requirements; the structure is simplified, the production efficiency is improved, and the production cost is reduced; the card that can be applied to different thickness promotes the button reliability, can prevent the spurious triggering.

Description

Mechanical key for IC card

Technical Field

The utility model relates to a mechanical type keyboard field especially relates to a mechanical type button for IC-card.

Background

At present, in various domestic fields, multifunctional IC cards come from birth, and the components of the multifunctional IC cards are as follows: the device comprises a power module, an information processing module, an input module and an output module. The input module comprises modules of voice input, image input, touch input, mechanical trigger input and the like. Regarding the size of the current IC card and the security of information transmission, the input module mostly adopts a mechanical trigger mode. With the generation of some foreign cards, the thickness of the card exceeds the maximum thickness of the traditional IC card by 0.84mm, even reaches 2.0mm, the hand feeling and the reliability of the mechanical key are required to be improved, and therefore, the structure of the mechanical key is required to be improved to meet the market demand.

There is a mechanical keypad for a smart card in the prior art, the mechanical keypad comprising: the dome switch comprises at least one dome button, a spacer and a double-sided film for fixing the dome button to the spacer; the separating sheet is provided with a first through hole for accommodating the snap dome key; the double-sided rubber sheet is laminated on one surface of the spacer, which faces the dome sheet key pressing part, and is provided with a second through hole corresponding to the dome sheet key, and a fixing part used for adhering the pressing part is arranged in the second through hole; at least two holes are in one group, and adjacent holes in the same group are communicated through an exhaust groove. The prior art has the following defects: 1) the structure is complex, and if a through hole for accommodating the snap dome key is required to be formed, at least one positioning hole is required to be formed; 2) the thickness of the application card is limited, and the thickness of the visual smart IC card is between 0.68 and 0.84 mm.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of the prior art, the utility model provides a mechanical type button for IC-card simplifies the structure, has promoted the feeling of button, satisfies different demands, technical scheme is as follows:

the utility model provides a mechanical type button for IC-card, it includes the adhesive linkage, sets up the protective layer and the setting of adhesive linkage upper surface are in from the type layer of adhesive linkage lower surface, be provided with at least one button card piece between protective layer and the adhesive linkage, the adhesive linkage includes end to end's border and at least one extension of being connected with the border, button card piece portion and extension contact, the border of adhesive linkage respectively with the protective layer reaches from the border bonding of type layer towards the border of button card piece, makes protective layer, adhesive linkage and form confined cavity gasbag from between the type layer.

Furthermore, the extension part comprises a first extension part and a second extension part which are oppositely arranged, a space is kept between the first extension part and the second extension part, one end part of the key snap dome is in contact with the first extension part, and the other end part of the key snap dome is in contact with the second extension part.

Further, the first extension part and the second extension part are both square structures.

Further, the protective layer is of a square structure.

Further, the release layer is release paper, and the outer contour shape of the release layer is the same as that of the bonding layer and is a square structure.

Further, the thickness of the protective layer is set to be in the range of 0.01-0.1 mm.

Further, the protective layer is made of a PET material.

Further, the adhesive layer is a double-sided film.

Further, the release layer is made of a transparent PP material.

Furthermore, the button snap dome is of any one of four-foot, round, diamond, square, rectangular and polygonal structures.

The utility model provides a beneficial effect that technical scheme brought as follows:

a. the mechanical key for the IC card simplifies the structure of the mechanical key, improves the production efficiency and reduces the production cost;

b. the mechanical key for the IC card is provided with the closed air bag, so that enough space is provided for the key dome sheet to extrude air in the pressing process, and meanwhile, the sealed air provides assistance for the bouncing of the key dome sheet in the extruding process, so that the strength of the key dome sheet is enhanced, the hand feeling of the key is improved, and different requirements are met;

c. the utility model provides a mechanical type button for IC-card is applied to the card of different thickness, and the button reliability promotes, can prevent the spurious triggering.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a mechanical key for an IC card according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an adhesive layer of a mechanical key for an IC card according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a key snap of a mechanical key for an IC card according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a release layer of a mechanical key for an IC card according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a protective layer of a mechanical key for an IC card according to an embodiment of the present invention.

Wherein the reference numerals include: 1-button metal dome sheet, 2-protective layer, 3-adhesive layer, 31-edge, 32-first extension part, 33-second extension part and 4-release layer.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

In an embodiment of the present invention, a mechanical key for IC card is provided, as shown in fig. 1, which includes an adhesive layer 3, a protective layer 2 disposed on the upper surface of the adhesive layer 3, and a release layer 4 disposed on the lower surface of the adhesive layer 3, wherein at least one key dome 1 is disposed between the protective layer 2 and the adhesive layer 3, and the protective layer 2 is a surface facing a user. The button metal dome 1 is preferably a metal dome, and can be conducted with a circuit board circuit in a pressing process to play a role in inputting information. The button metal dome 1 is preferably a four-leg metal dome, and has the height of 0.5mm, the diameter of 8.4mm and the force of 280g, as shown in fig. 3, the elasticity is optimal when the button dome is pressed, the hand feeling is good, and the requirements of users are met. The button snap dome 1 can also be in any one of a circular, rhombic, square, rectangular and polygonal structure.

The adhesive layer 3 is a double-sided film, preferably a transparent 3M double-sided adhesive tape, the width of the double-sided film is preferably 2mm, the adhesiveness is strong, and the situation that a metal dome sheet enters the adhesive tape in the production process of the IC card can be prevented. The width of the double-sided film can be adjusted according to the whole size of the key and is not limited to 2 mm.

The specific structure of the adhesive layer 3 is as follows: referring to fig. 1 and 2, the adhesive layer 3 includes an edge 31 connected end to end and at least one extension connected to the edge 31, the edge 31 is preferably of a square configuration, and the edge 31 extends inwardly (inwardly relative to the edge, inwardly toward the center of the adhesive layer) to form an extension. The key metal dome 1 is partially contacted with the extending part, the edge 31 of the adhesive layer 3 is respectively bonded with the edge of the protective layer 2 facing the key metal dome 1 and the edge of the release layer 4, so that a closed hollow air bag is formed among the protective layer 2, the adhesive layer 3 and the release layer 4, the parts except the edge and the extending part on the adhesive layer 3 are hollowed out, the sum of the areas of the edge and the extending part is smaller than the area of a graph formed by the outer contour of the adhesive layer 3, so that the closed hollow air bag is formed, because the key metal dome 1 is partially contacted with the extending part and the rest part is contacted with the hollowed part, when the key metal dome 1 is partially contacted with the extending part, the edge 31 of the adhesive layer 3 is respectively bonded with the edge of the protective layer 2 facing the key metal dome 1 and the edge of the release layer 4, a closed air bag is formed at the hollowed part and the extending part, sufficient space is provided for the button dome piece to extrude air in the pressing process, and meanwhile, the sealed air provides assistance for bouncing of the dome piece in the extruding process, so that the strength of the dome piece is enhanced, and the hand feeling of the button is improved.

The preferred construction of the extension is as follows: referring to fig. 2, the extension portions include a first extension portion 32 and a second extension portion 33 which are oppositely arranged, a gap is maintained between the first extension portion 32 and the second extension portion 33, one end portion of the key dome 1 is in contact with the first extension portion 32, the other end portion of the key dome 1 is in contact with the second extension portion 33, and the bonding area of the key dome 1 and the adhesive layer is smaller than the area of the key dome 1. The first extension 32 and the second extension 33 are both square structures which ensure both sufficient adhesion and the formation of a closed hollow balloon.

When the key metal dome 1 is provided with a plurality of key metal domes, the extending parts are provided with a plurality of key metal domes 1 at intervals, and the extending parts are also provided at intervals.

When using this mechanical type button, get rid of earlier from the type layer, paste the one side that button dome piece was kept away from to overall structure's tie coat on the PCB board again, the protective layer is outwards, moves towards the operator promptly, when pasting on the PCB board, can also form confined cavity gasbag between protective layer 2, adhesive linkage 3 and the PCB board, provide sufficient space for button dome piece is pressing the in-process extrusion air.

The specific structure of the protective layer 2 is as follows: referring to fig. 5, the protective layer 2 has a square structure, the thickness of the protective layer 2 is set to be 0.01-0.1mm, the thickness is preferably 0.05mm, the protective layer 2 is made of a PET material, the color can be transparent or white, the PET material is environment-friendly, the surface is smooth, the friction resistance is good, the hardness is high, the electrical insulation performance is good, and the hand feeling of the key can be enhanced.

The release layer 4 is release paper, and the outer contour shape of the release layer 4 is the same as the outer contour shape of the adhesive layer 3 and the outer contour shape of the protective layer and is a square structure, see fig. 4. The release layer 4 is preferably made of a transparent PP material and is used for protecting the adhesiveness of the double-sided adhesive sheet and preventing the double-sided adhesive sheet from being polluted and avoiding the snap dome sheet from being scratched and corroded. The selected release material is a transparent material, so that a user can find whether the dome sheet deviates from the position more easily, and the reject ratio in the production process is reduced.

The mechanical key of the utility model not only satisfies the use of the traditional IC card, but also is suitable for various intelligent special-shaped cards; the mechanical key for the IC card simplifies the structure of the mechanical key, improves the production efficiency and reduces the production cost; the mechanical key is provided with the closed air bag with a certain area, so that enough space is provided for the key dome sheet to extrude air in the pressing process, meanwhile, the sealed air provides assistance for the bouncing of the key dome sheet in the extruding process, the strength of the key dome sheet is enhanced, the hand feeling of the key is improved, and different requirements are met; card thickness is thicker, and is higher to the requirement of button, and it is very poor not have the gasbag to feel, and the utility model provides a mechanical type button is applied to the card of different thickness, can set up the gasbag of different areas, and the button reliability promotes, can prevent the spurious triggering.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a mechanical type button for IC-card, its characterized in that is in including adhesive linkage (3), setting protective layer (2) and the setting of adhesive linkage (3) upper surface are in release layer (4) of adhesive linkage (3) lower surface, be provided with at least one button metal dome (1) between protective layer (2) and adhesive linkage (3), adhesive linkage (3) include border (31) and at least one extension of being connected with border (31) end to end, button metal dome (1) part and extension contact, border (31) of adhesive linkage (3) respectively with protective layer (2) are towards the border of button metal dome (1) and the border bonding of release layer (4), make protective layer (2), adhesive linkage (3) and form confined cavity gasbag between the release layer (4).

2. The mechanical key for the IC card according to claim 1, wherein the extension portion comprises a first extension portion (32) and a second extension portion (33) which are oppositely arranged, the first extension portion (32) and the second extension portion (33) are spaced apart from each other, one end portion of the key dome (1) is in contact with the first extension portion (32), and the other end portion is in contact with the second extension portion (33).

3. The mechanical key for IC card according to claim 2, wherein the first extension portion (32) and the second extension portion (33) are both square structures.

4. Mechanical key for an IC card according to claim 1, characterized in that the protective layer (2) is of square configuration.

5. The mechanical key for IC card according to claim 1, wherein the release layer (4) is release paper, and the outer contour shape of the release layer (4) is the same as the outer contour shape of the adhesive layer (3) and is a square structure.

6. Mechanical button for IC card according to claim 1, characterized in that the thickness of the protective layer (2) is set in the range of 0.01-0.1 mm.

7. Mechanical button for an IC card according to claim 1, characterized in that the protective layer (2) is made of PET material.

8. Mechanical button for IC card according to claim 1, characterized in that the adhesive layer (3) is a double-sided film.

9. Mechanical key for IC card according to claim 1, characterized in that the release layer (4) is made of transparent PP material.

10. The mechanical key for IC card according to claim 1, wherein said key dome (1) is any one of four-foot, circular, diamond, square, rectangular, polygonal structure.