A multifunction switch key

Abstract

The utility model discloses a multifunctional switch button, including facial mask, first double -faced adhesive, first circuit layer, second double -faced adhesive layer, second circuit layer, third double -faced adhesive layer, third circuit layer and back adhesive layer from top to bottom are set in order of laminated. The utility model discloses, through with the heavy press on -off circuit integration in the laminated structure of one button of touch feeling circuit, light press on -off circuit, realized the response of distinguishing response to different operating force with single point touch area, thereby under the premise of guaranteeing rich interactive function, the layout space of product panel has been saved effectively, and the user operation has been simplified.

Description

Technical Field

[0001] This utility model relates to the field of membrane switch technology, and in particular to a multifunctional switch button. Background Technology

[0002] Currently, consumer electronics products are rapidly developing towards high integration and thinner designs, placing higher demands on the spatial layout of internal components and the diversity of human-computer interaction. As a fundamental component for realizing human-computer interaction, the technological evolution of power switches has always revolved around the core goal of achieving richer functionality within a limited space. From early mechanical buttons to modern touch-sensitive buttons, their design concepts have been continuously updated to meet users' ever-growing needs for product appearance, feel, and functionality.

[0003] However, existing switch button designs generally suffer from a contradiction between functional limitation and space occupancy. A common practice is for a single physical button to perform only one switching function, such as a simple touch, press, or hard press. To implement three different control logics on a single product, three separate buttons must be placed. This not only significantly increases the panel opening area and occupies valuable internal design space, but also contradicts the current trend of simple, integrated product design. Furthermore, the arrangement of multiple buttons increases the user's learning and operating costs, affecting intuitiveness and convenience.

[0004] Therefore, it is necessary to improve and optimize the structure of existing switches and buttons, with the aim of developing a new type of button solution that is compact and can realize multiple control logics through a single touch area, in order to fundamentally solve the current problems of single function, low space utilization and poor user experience. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-functional switch button.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-functional switch button, comprising a face film, a first double-sided adhesive, a first circuit layer, a second double-sided adhesive layer, a second circuit layer, a third double-sided adhesive layer, a third circuit layer, and a backing adhesive layer, which are stacked sequentially from top to bottom.

[0007] The lower surface of the first circuit layer is provided with touch lines, and the conductive surface of the touch lines faces downward.

[0008] The second double-sided adhesive layer has a first cavity at the position corresponding to the button marking on the mask;

[0009] The upper surface of the second circuit layer is provided with a first button line, and the conductive surface of the first button line faces upward and is vertically opposite to the position of the touch line, so that when pressed, the touch line can contact the first button line to form a first conductive loop.

[0010] The third double-sided adhesive layer has a second cavity at the position corresponding to the button mark, and a spring is provided in the second cavity;

[0011] The upper surface of the third circuit layer is provided with a second button line, and the conductive surface of the second button line faces upward and is vertically opposite to the position of the spring piece, so that when pressed, the spring piece can contact the second button line to form a second conductive circuit.

[0012] The circuit tails of the first, second, and third circuit layers are merged into a single connecting line.

[0013] As a further description of the above technical solution:

[0014] The mask has a thickness of 0.1 mm to 0.2 mm and the button markings are printed on it.

[0015] As a further description of the above technical solution:

[0016] The thickness of the first circuit layer, the second circuit layer, and the third circuit layer is all between 0.075 mm and 0.125 mm; the touch circuit, the first button circuit, and the second button circuit are any one of silver paste sintered circuit and etched copper foil circuit.

[0017] As a further description of the above technical solution:

[0018] The thickness of the second double-sided adhesive layer is 0.2 mm to 0.3 mm.

[0019] As a further description of the above technical solution:

[0020] The third double-sided adhesive layer is an elastic adhesive layer with a thickness of 0.5 mm to 0.6 mm, and its thickness is equal to the height of the spring sheet.

[0021] As a further description of the above technical solution:

[0022] The areas of the first button circuit and the touch circuit opposite each other are arranged in a dog-tooth pattern.

[0023] As a further description of the above technical solution:

[0024] The triggering force of the shrapnel is 300 to 450 grams.

[0025] This utility model has the following beneficial effects:

[0026] Compared with existing technologies, this multi-functional switch button integrates the touch sensing circuit, the light press conduction circuit, and the hard press conduction circuit into a single button's stacked structure. This allows for differentiated responses to different operating forces using a single touch area, thereby effectively saving product panel layout space and simplifying user operation while ensuring rich interactive functions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a multi-functional switch button proposed in this utility model;

[0028] Figure 2 This utility model proposes a multi-functional switch button. Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a layered sectional view of the internal structure of a multifunctional switch button proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the first circuit layer structure of a multi-functional switch button proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the second circuit layer structure of a multi-functional switch button proposed in this utility model;

[0032] Figure 6 This is a schematic diagram of the third circuit layer structure of a multi-functional switch button proposed in this utility model.

[0033] Legend:

[0034] 1. Facial mask; 2. First double-sided adhesive; 3. First circuit layer; 4. Second double-sided adhesive layer; 5. Second circuit layer; 6. Third double-sided adhesive layer; 7. Third circuit layer; 8. Backing adhesive layer; 9. Spring; 10. Connecting wire; 11. Button marking; 12. Touch circuit; 13. First cavity; 14. First button circuit; 15. Second cavity; 16. Second button circuit. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1 to 6The specific implementation of the multi-functional switch button provided by this utility model is as follows:

[0037] To integrate touch sensing, light press, and hard press functions into a single button area, thus solving the problems of large space occupation and inconvenient operation of traditional multi-button layouts, this embodiment provides a multi-layer stacked structure. This structure includes, from top to bottom, a face film 1, a first double-sided adhesive 2, a first circuit layer 3, a second double-sided adhesive layer 4, a second circuit layer 5, a third double-sided adhesive layer 6, a third circuit layer 7, and a backing adhesive layer 8. Through this structure, three independent electronic control circuits are precisely integrated under the same button position, allowing users to trigger different functions through different operation methods without moving their fingers. This greatly optimizes the space utilization of the product panel and improves the intuitiveness and integration of operation.

[0038] To enable the triggering of the first function without physical contact and provide a user experience that responds to a light touch, this embodiment provides a touch circuit 12 on the lower surface of the first circuit layer 3, with the conductive surface of the touch circuit 12 facing downwards. When a user's finger approaches or lightly touches the button marking 11 area on the surface of the mask 1, the capacitance value of the touch circuit 12 changes. Through the above structure, the capacitance change signal can be captured by the detection circuit, thereby realizing the control of the first function such as power on / off and menu wake-up. This method is highly responsive and has no mechanical loss.

[0039] To enable a light press to trigger the second function and ensure reliable contact continuity, this embodiment creates a first cavity 13 on the second double-sided adhesive layer 4 corresponding to the button marking 11. Simultaneously, a first button circuit 14 is formed on the upper surface of the second circuit layer 5, with its conductive surface facing upwards. The first button circuit 14 and the touch circuit 12 above it are vertically opposite each other, and their contact areas are arranged in an interlocking pattern. When the user applies a pressure of approximately 100 to 200 grams, the first cavity 13 is compressed, forcing the touch circuit 12 to move downwards and contact the first button circuit 14. This interlocking design increases the effective contact area, ensuring that even with slight misalignment or contamination, the first conductive circuit can be stably and reliably formed, enabling second functions such as confirmation and selection.

[0040] To enable a hard press to trigger the third function and provide clear force feedback, this embodiment features a second cavity 15 on the third double-sided adhesive layer 6 corresponding to the button marking 11. A spring 9 is housed within the second cavity 15. A second button circuit 16 is located on the upper surface of the third circuit layer 7, with its conductive surface facing upwards, vertically opposite the spring 9. The third double-sided adhesive layer 6 is an elastic layer with a thickness of 0.5mm to 0.6mm, equal to the height of the spring 9, and the triggering force of the spring 9 is 300 to 450 grams. When the user applies a force exceeding 400 grams, the pressure overcomes the deformation force of the spring 9, causing it to collapse instantly and contact the second button circuit 16. Through this structure, the spring 9 provides clear tactile feedback, making the triggering of the third function highly recognizable, effectively preventing accidental operation, and enabling important or advanced functions such as shortcut menus and deletion.

[0041] To ensure the overall structure is thin and flexible, adapting to the compact internal space of modern electronic devices, the thickness of the face film 1 in this embodiment is 0.1mm to 0.2mm; the thicknesses of the first circuit layer 3, the second circuit layer 5, and the third circuit layer 7 are all 0.075mm to 0.125mm; and the thickness of the second double-sided adhesive layer 4 is 0.2mm to 0.3mm. The touch circuit 12, the first button circuit 14, and the second button circuit 16 are formed on their respective circuit layers using silver paste sintering or copper foil etching processes. Through this structure, the entire switch button maintains its ultra-thin and flexible characteristics, easily fitting onto curved or irregular surfaces, while the thickness parameters of each layer ensure sufficient structural strength and normal button travel.

[0042] To achieve efficient aggregation and external transmission of all electrical signals and simplify the connection with the main control board, this embodiment combines the circuit tails of the first circuit layer 3, the second circuit layer 5, and the third circuit layer 7 into a single connecting line 10. With this structure, all signal transmission for the three independent functional loops can be completed with only one connector interface, significantly reducing the wiring complexity and cost during product assembly.

[0043] To ensure the switch button is securely mounted to the product housing, this embodiment includes an adhesive layer 8 at the bottom. This structure provides strong adhesion, ensuring the button remains in place during long-term use and does not shift or detach.

[0044] Working principle

[0045] The working principle of this invention is based on a layered triggering mechanism with graded force application. Under normal conditions, the three circuit layers are insulated from each other. When a user lightly touches or approaches the button area, it causes a change in capacitance of the touch circuit 12 on the first circuit layer 3, thereby achieving contactless sensing for the first function. When the user applies moderate pressure, the pressure is transmitted through the membrane 1, compressing the first cavity 13 on the second double-sided adhesive layer 4, causing the touch circuit 12 on the lower surface of the first circuit layer 3 to physically contact the first button circuit 14 on the upper surface of the second circuit layer 5, forming a first conductive loop and triggering the second function. When the user applies greater pressure, the pressure is further transmitted downwards, compressing the third double-sided adhesive layer 6, causing the spring 9 placed in the second cavity 15 to deform and contact the second button circuit 16 on the upper surface of the third circuit layer 7, forming a second conductive loop and triggering the third function. Through this precise structural design of "one layer of sensing and two layers of pressing," this invention successfully achieves the recognition and response of a single button position to three different operating logics.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-functional switch button, characterized in that: It includes a face mask (1), a first double-sided adhesive (2), a first circuit layer (3), a second double-sided adhesive layer (4), a second circuit layer (5), a third double-sided adhesive layer (6), a third circuit layer (7), and a backing adhesive layer (8) stacked from top to bottom. The lower surface of the first circuit layer (3) is provided with a touch line (12), and the conductive surface of the touch line (12) faces downward; The second double-sided adhesive layer (4) has a first cavity (13) at the position corresponding to the button mark (11) of the mask (1); The upper surface of the second circuit layer (5) is provided with a first button line (14), and the conductive surface of the first button line (14) faces upward and is vertically opposite to the position of the touch line (12), so that when pressed, the touch line (12) can contact the first button line (14) to form a first conductive loop. The third double-sided adhesive layer (6) has a second cavity (15) at the position corresponding to the button mark (11), and a spring piece (9) is provided in the second cavity (15). The upper surface of the third circuit layer (7) is provided with a second button line (16), and the conductive surface of the second button line (16) faces upward and is vertically opposite to the position of the spring piece (9), so that when pressed, the spring piece (9) can contact the second button line (16) to form a second conductive circuit. The circuit tails of the first circuit layer (3), the second circuit layer (5) and the third circuit layer (7) are merged into a single connecting line (10).

2. A multi-functional switch button according to claim 1, characterized in that: The mask (1) has a thickness of 0.1 mm to 0.2 mm and the button marking (11) is printed on it.

3. A multi-functional switch button according to claim 1, characterized in that: The thickness of the first circuit layer (3), the second circuit layer (5) and the third circuit layer (7) is 0.075mm to 0.125mm; the touch circuit (12), the first button circuit (14) and the second button circuit (16) are either silver paste sintered circuits or etched copper foil circuits.

4. A multi-functional switch button according to claim 1, characterized in that: The thickness of the second double-sided adhesive layer (4) is 0.2 mm to 0.3 mm.

5. A multi-functional switch button according to claim 1, characterized in that: The third double-sided adhesive layer (6) is an elastic adhesive layer with a thickness of 0.5 mm to 0.6 mm, and its thickness is equal to the height of the spring sheet (9).

6. A multi-functional switch button according to claim 1, characterized in that: The areas of the first button line (14) and the touch line (12) opposite each other are arranged in an interlocking pattern.

7. A multi-functional switch button according to claim 1, characterized in that: The triggering force of the shrapnel (9) is 300 to 450 grams.

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