Double-sided tape for volume buttons

Abstract

This utility model relates to the field of double-sided adhesive technology, specifically a double-sided adhesive for volume buttons. The double-sided adhesive includes a main body and a sloping surface. The sloping surface is located at both ends of the main body, and the angle between the sloping surface and the bottom surface of the main body is 40-50 degrees. The main body includes a foam layer, which comprises a substrate and aramid fibers. The aramid fibers are woven into a mesh and embedded inside the substrate. The substrate is made of shape memory polyurethane. A first adhesive layer, which is a high-adhesion adhesive, is located on the top of the foam layer and connects to the button. A conductive mesh layer is located at the bottom of the foam layer, and a second adhesive layer, which is a high-cohesive-strength adhesive, is located below the conductive mesh layer. This utility model has the advantages of simple structure, reasonable design, and, with the sloping design, uniform stress dispersion, increasing the long-term stability of the volume buttons.

Description

Technical Field

[0001] This utility model relates to the field of double-sided adhesive technology, specifically to a double-sided adhesive for volume buttons. Background Technology

[0002] As electronic devices become thinner and more precise, the assembly process and material properties of volume buttons, as frequently used interactive components, are crucial to the overall user experience and reliability of the device. Double-sided tape is one of the essential tools in the assembly process of volume buttons.

[0003] Existing double-sided adhesive tapes can generate localized stress during repeated button presses, which can lead to adhesive detachment over time, causing volume buttons to become loose and structurally unstable. To address this issue, the inventors designed a new type of double-sided adhesive tape for volume buttons. Utility Model Content

[0004] The purpose of this invention is to provide a double-sided adhesive for volume keys, which has the advantages of simple structure, reasonable design, and uniform stress dispersion under the slope design, thereby increasing the long-term stability of volume keys and solving the problems mentioned in the above-mentioned technical background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-sided adhesive for volume buttons, the double-sided adhesive comprising a double-sided adhesive body and a sloping surface, the sloping surface being disposed at both ends of the double-sided adhesive body, and the angle between the sloping surface and the bottom surface of the double-sided adhesive body being 40 degrees to 50 degrees. The double-sided adhesive body includes a foam layer, which includes a substrate and aramid fibers. The aramid fibers are woven to form a mesh, and the aramid fibers are embedded inside the substrate.

[0006] Preferably, the substrate is made of shape memory polyurethane.

[0007] Preferably, a first adhesive layer is provided on the top of the foam layer. The first adhesive layer is a high-adhesion adhesive, and the first adhesive layer is connected to the button.

[0008] Preferably, a conductive mesh layer is provided at the bottom of the foam layer.

[0009] Preferably, a second adhesive layer is provided at the bottom of the conductive mesh layer. The second adhesive layer is a high cohesive strength adhesive, and the second adhesive layer is connected to the PCB board.

[0010] Preferably, the top surface of the first adhesive layer is covered with a first release paper.

[0011] Preferably, the bottom surface of the second adhesive layer is covered with a second release paper, and the width of the first release paper is smaller than the width of the second release paper.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a double-sided adhesive for volume buttons. The double-sided adhesive includes a double-sided adhesive body and a sloping surface. The sloping surface is set at both ends of the double-sided adhesive body, and the angle between the sloping surface and the bottom surface of the double-sided adhesive body is 40 degrees to 50 degrees. The overall structure is simple and the design is reasonable. Through the design of the sloping surface, the progressive bonding area formed by the double-sided adhesive can evenly distribute stress and increase the long-term stability of the volume buttons.

[0013] 2. This utility model uses a shape memory polyurethane substrate design to enable the double-sided adhesive to automatically return to its original shape after changes in temperature and humidity or long-term pressure, avoiding loosening or deformation after long-term use. In addition, the aramid fiber mesh set inside the substrate greatly improves the tear resistance of the double-sided adhesive, thus enabling the double-sided adhesive to adapt to frequent pressing or mechanical impact scenarios. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a structural diagram of the foam layer of this utility model.

[0015] The reference numerals and names in the figure are as follows: 1. Double-sided adhesive body; 11. Foam layer; 111. Substrate; 112. Aramid fiber; 12. First adhesive layer; 13. First release paper; 14. Conductive grid layer; 15. Second adhesive layer; 16. Second release paper; 2. Sloping surface. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0019] Please see Figures 1 to 3 The present invention provides an embodiment of a double-sided adhesive for volume keys, the double-sided adhesive comprising a double-sided adhesive body 1 and a sloping surface 2, the sloping surface 2 being disposed at both ends of the double-sided adhesive body 1, and the slope of the sloping surface 2 and the bottom surface of the double-sided adhesive body 1 being 40 degrees to 50 degrees. The double-sided adhesive body 1 serves as the core support structure, providing elastic cushioning and shape memory functions to ensure the rebound stability when the button is pressed. The sloping surface 2 reduces edge stress concentration during pasting and prevents warping or delamination. The double-sided adhesive body 1 includes a foam layer 11, which includes a substrate 111 and aramid fibers 112. The aramid fibers 112 are woven to form a mesh, and the aramid fibers 112 are embedded inside the substrate 111. The substrate 111 is made of shape memory polyurethane, which can restore its original shape after being compressed, ensuring the consistency of the button's tactile feel over long-term use. The aramid fiber 112 woven mesh provides shear resistance in the XY plane, thereby increasing the structural strength of the foam layer 11. The substrate 111 is made of shape memory polyurethane; The shape memory polyurethane is soft and compressible at normal temperatures, but hardens when the equipment heats up, preventing the adhesive layer from softening and failing at high temperatures, thus extending the service life of the double-sided tape. A first adhesive layer 12 is provided on the top of the foam layer 11. The first adhesive layer 12 is a high-adhesion adhesive and is connected to the button. The first adhesive layer 12 is bonded to the button and is designed with a high tack adhesive to balance high-strength bonding and adjustability. A conductive mesh layer 14 is provided at the bottom of the foam layer 11; The conductive mesh layer 14 serves as an electrostatic discharge channel for the double-sided adhesive. A second adhesive layer 15 is provided at the bottom of the conductive mesh layer 14. The second adhesive layer 15 is a high cohesive strength adhesive and is connected to the PCB board. The second adhesive layer 15 is bonded to the PCB board. It adopts a high cohesive strength adhesive design, which can resist long-term stress relaxation and ensure that the button is firmly fixed in the required position for a long time. The top surface of the first adhesive layer 12 is covered with the first release paper 13; The bottom surface of the second adhesive layer 15 is covered with a second release paper 16, and the width of the first release paper 13 is smaller than the width of the second release paper 16. The first release paper 13 and the second release paper 16 prevent the first adhesive layer 12 and the second adhesive layer 15 from being contaminated when double-sided tape is not used; Working principle: When the double-sided tape body 1 needs to be used, first peel off the second release paper 16, fix the second adhesive layer 15 in the required position, and then peel off the first release paper 13 so that the first adhesive layer 12 can be connected to the button.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-sided tape for a volume key, characterized by include: The double-sided adhesive body (1) and the inclined surface (2) are provided at both ends of the double-sided adhesive body (1), and the slope of the inclined surface (2) and the bottom surface of the double-sided adhesive body (1) is 40 degrees to 50 degrees. The double-sided adhesive body (1) includes a foam layer (11), which includes a substrate (111) and aramid fibers (112). The aramid fibers (112) are woven to form a mesh, and the aramid fibers (112) are embedded inside the substrate (111).

2. The double-coated tape for a volume key according to claim 1, wherein The substrate (111) is made of shape memory polyurethane.

3. The double-faced tape for a volume key according to claim 1, wherein The top of the foam layer (11) is provided with a first adhesive layer (12), which is a high-adhesion adhesive and is connected to the button.

4. The double-faced tape for a volume key according to claim 1, wherein A conductive mesh layer (14) is provided at the bottom of the foam layer (11).

5. The double-faced tape for a volume key according to claim 4, wherein The bottom of the conductive mesh layer (14) is provided with a second adhesive layer (15), which is a high cohesive strength adhesive and is connected to the PCB board.

6. The double-faced tape for a volume key according to claim 3, wherein The top surface of the first adhesive layer (12) is covered with a first release paper (13).

7. The double-faced tape for a volume key according to claim 5, wherein The bottom surface of the second adhesive layer (15) is covered with a second release paper (16), and the width of the first release paper (13) is smaller than the width of the second release paper (16).

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