High-tactile flexible film circuit switch

Abstract

This invention provides a high-tactile flexible film circuit switch. The high-tactile flexible film circuit switch includes: a base; a flexible film, the flexible film being mounted on top of the base; multiple rebound mechanisms mounted on the inner surface of the flexible film; a partition layer mounted on the outer surface of the flexible film; and a pressing assembly mounted on top of the partition layer. The pressing assembly includes a flexible pressing plate, an upper circuit layer, and a connecting bolt, with the bottom end of the connecting bolt mounted on the top of the upper circuit layer. The high-tactile flexible film circuit switch provided by this invention effectively reduces the impact on the user's fingers when the metal pressing plate springs back, reducing fatigue during long-term operation. Simultaneously, the use of four arc-shaped rebound mechanisms with slightly larger diameters at the top and bottom and slightly smaller diameters in the middle improves the rebound force. Combined with the flexible film, this enhances the rebound effect, allowing the user to trigger the switch more accurately when pressing, reducing misoperation and improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of thin-film circuit switch technology, and in particular to a highly tactile flexible thin-film circuit switch. Background Technology

[0002] A membrane switch is an operating system that integrates button functions, indicator elements, and an instrument panel. It consists of four parts: panel, upper circuit, isolation layer, and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit deform downward and make contact with the plates of the lower circuit to conduct electricity. When the finger is released, the contacts of the upper circuit bounce back, the circuit is broken, and the circuit triggers a signal.

[0003] The membrane circuit switch consists of a panel layer, an insulating layer, an upper circuit layer, a lower circuit layer, a spring-loaded mechanism, and a metal pressing plate. The upper circuit layer is pressed by the metal pressing plate, causing the contacts of the upper circuit layer to move down and make contact with the plates of the lower circuit layer to conduct electricity. After the metal pressing plate is released, the spring-loaded mechanism resets the upper circuit layer, and the circuit is disconnected.

[0004] Existing membrane switches often use metal pressing plates, which have high hardness and elasticity, resulting in a hard pressing feel. At the same time, the rebound mechanism of membrane switches using ordinary elastic plates has problems such as insufficient rebound force, failure to reset after repeated pressing, and difficulty in aligning the finger when pressing, leading to misoperation.

[0005] Therefore, it is necessary to provide a highly tactile flexible thin-film circuit switch to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a high-tactile flexible film circuit switch, which solves the problem that the pressing panel using a metal pressing plate and the ordinary elastic sheet rebound mechanism will affect the pressing feel and the rebound force is insufficient.

[0007] To solve the above-mentioned technical problems, the high-tactile flexible thin-film circuit switch provided by this utility model includes: a base;

[0008] A flexible film is mounted on top of a base. Multiple rebound mechanisms are mounted on the inner surface of the flexible film. A partition is mounted on the outer surface of the flexible film. A pressing assembly is mounted on top of the partition. The pressing assembly includes a flexible pressing sheet, an upper circuit layer, and a connecting bolt. The bottom end of the connecting bolt is mounted on the top of the upper circuit layer, and the top end of the connecting bolt is mounted on the bottom of the flexible pressing sheet.

[0009] The lower circuit layer is installed at the top center of the base;

[0010] The bottom of the rebound mechanism contacts the top of the base, the lower circuit layer and the upper circuit layer are positioned correspondingly, and the flexible film and the top of the base are connected by adhesive.

[0011] Preferably, the flexible film comprises a film cover and a film ring, the film ring being located at the bottom end of the film cover, and the film cover being spherical;

[0012] The inner surface of the membrane cover is connected to the top of the spring mechanism via a line near the center.

[0013] Preferably, the flexible film is a polyimide film, and the separator is a polyester film;

[0014] Polyimide film has excellent high temperature resistance and chemical corrosion resistance, and performs stably in harsh environments. It has excellent flexibility and is not easy to crack even after repeated bending and pressing. It is suitable for the periphery of the rebound mechanism or the auxiliary structure of the circuit layer where high durability is required, and can ensure that the switch maintains structural stability during long-term use. Polyester film has excellent insulation properties.

[0015] Preferably, the top of the flexible film and the partition are both provided with perforations, the connecting bolt and the flexible pressing sheet are made of silicone material, the top of the partition is provided with an installation groove, and the top of the installation groove is provided with a fluorescent ring;

[0016] The connecting bolt passes through the perforation.

[0017] Preferably, the spring mechanism includes a spring ring, a force-dispersing hole, and a spring opening. The spring opening passes through the spring ring at the middle position, and the force-dispersing hole passes through both ends of the spring ring near the top and bottom. The spring mechanism is made of polyetheretherketone (PEEK).

[0018] The shape of the spring mechanism is shown in the reference diagram. The spring opening can improve the spring performance, and the force dissipation hole assists in force dissipation.

[0019] Preferably, a fixing ring is installed on the top of the base, and a sealing groove is formed on the adjacent side of the fixing ring and the film ring;

[0020] The sealing groove is misaligned, with the top of the retaining ring contacting the bottom of the spring mechanism.

[0021] Preferably, the top of the film ring is provided with multiple fixing structures, and a sealing assembly is installed on the side of the fixing ring and the film ring adjacent to each other;

[0022] The fixed structure is threaded through the diaphragm ring, sealing assembly, and retaining ring.

[0023] Preferably, the sealing assembly includes a sealing ring and two raised strips, the raised strips being located at the top and bottom ends of the sealing ring, respectively;

[0024] The two protrusions are also misaligned.

[0025] Compared with related technologies, the high-tactile flexible thin-film circuit switch provided by this utility model has the following advantages:

[0026] Beneficial effects:

[0027] This utility model provides a high-tactile flexible film circuit switch. To improve the comfort and rebound of the film circuit switch, a pressing component is installed on top of the flexible film through a partition, with the upper circuit layer positioned above the lower circuit layer to enhance pressing comfort. Simultaneously, four arc-shaped rebound mechanisms are installed between the flexible film and the base, improving the high rebound performance of the flexible film and reducing the probability of the rebound mechanism failing to reset. This design effectively alleviates the impact on the user's fingers when the metal pressing piece springs back, reducing fatigue during long-term operation. Furthermore, the four arc-shaped rebound mechanisms, with slightly larger diameters at the top and bottom and slightly smaller in the middle, increase the rebound force, working in conjunction with the flexible film to enhance the rebound effect. This allows the user to trigger the switch more accurately when pressing, reducing misoperation and improving the user experience. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of the first embodiment of the high-tactile flexible thin-film circuit switch provided by this utility model;

[0029] Figure 2 A structural schematic diagram of a high-resilience component is provided for this utility model;

[0030] Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown;

[0031] Figure 4 Provided for this utility model Figure 2 An enlarged view of point B shown;

[0032] Figure 5 A schematic diagram of the structure of a second embodiment of the high-tactile flexible thin-film circuit switch provided by this utility model;

[0033] Figure 6 A structural schematic diagram of the fixing ring is provided for this utility model;

[0034] Figure 7 Provided for this utility model Figure 6 A magnified view of point C shown.

[0035] Numbered in the diagram: 1. Base;

[0036] 2. Flexible film; 201. Film cover; 202. Film ring;

[0037] 3. Partition;

[0038] 4. Pressing assembly, 401. Flexible pressing sheet, 402. Upper circuit layer, 403. Connecting bolt;

[0039] 5. Lower circuit layer;

[0040] 6. Springback mechanism, 601. Springback ring, 602. Force dissipation hole, 603. Springback opening;

[0041] 7. Perforation; 8. Fluorescent ring; 9. Mounting slot;

[0042] 10. Sealing assembly; 101. Sealing ring; 102. Raised strip;

[0043] 11. Fixing ring, 12. Sealing groove, 13. Fixing structure. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] First Embodiment

[0046] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the structure of the first embodiment of the high-tactile flexible thin-film circuit switch provided by this utility model; Figure 2 A structural schematic diagram of a high-resilience component is provided for this utility model; Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown; Figure 4 Provided for this utility model Figure 2 The enlarged view at point B is shown. The high-tactile flexible film circuit switch includes: a base 1;

[0047] A flexible film 2 is installed on the top of the base 1. Multiple rebound mechanisms 6 are installed on the inner surface of the flexible film 2. A partition 3 is installed on the outer surface of the flexible film 2. A pressing assembly 4 is installed on the top of the partition 3. The pressing assembly 4 includes a flexible pressing piece 401, an upper circuit layer 402, and a connecting bolt 403. The bottom end of the connecting bolt 403 is installed on the top of the upper circuit layer 402, and the top end of the connecting bolt 403 is installed on the bottom of the flexible pressing piece 401.

[0048] The lower circuit layer 5 is installed at the top center of the base 1;

[0049] The bottom of the rebound mechanism 6 contacts the top of the base 1, the lower circuit layer 5 and the upper circuit layer 402 are positioned correspondingly, and the flexible film 2 and the top of the base 1 are connected by adhesive.

[0050] Please refer to Figure 1 and Figure 2The flexible film 2 includes a film cover 201 and a film ring 202, the film ring 202 being located at the bottom end of the film cover 201, and the film cover 201 being spherical;

[0051] The inner surface of the film cover 201 is connected to the top of the spring mechanism 6 near the middle line.

[0052] The flexible film 2 is a polyimide film, and the separator 3 is a polyester film;

[0053] Polyimide film possesses excellent high-temperature resistance and chemical corrosion resistance, exhibiting stability in harsh environments. Its exceptional flexibility prevents cracking even after repeated bending and pressing, making it suitable for peripheral structures of rebound mechanisms or circuit layers where durability is paramount. This ensures the switch maintains structural stability during long-term use. Polyester film offers superior insulation properties, effectively isolating the circuit layer and preventing short circuits. It also boasts high mechanical strength, wear resistance, and tensile strength, allowing it to withstand repeated pressing operations without significant damage.

[0054] Please refer to Figure 2 The flexible film 2 and the partition 3 are both provided with perforations 7 at their top ends. The connecting bolt 403 and the flexible pressing piece 401 are made of silicone material. The partition 3 is provided with an installation groove 9 at its top end. A fluorescent ring 8 is provided at the top end of the installation groove 9.

[0055] The connecting bolt 403 passes through the perforation 7, and the fluorescent ring 8 absorbs light and can glow at night.

[0056] Please refer to Figure 2 and Figure 4 The spring mechanism 6 includes a spring ring 601, a force dispersing hole 602 and a spring opening 603. The spring opening 603 passes through the spring ring 601 and is located in the middle. The force dispersing hole 602 passes through both ends of the spring ring 601 near the top and bottom. The spring mechanism 6 is made of polyetheretherketone.

[0057] Shape reference of spring mechanism 6 Figure 3 The rebound port 603 can improve the rebound performance, and the force dissipation hole 602 assists in force dissipation.

[0058] The working principle of the high-tactile flexible thin-film circuit switch provided by this utility model is as follows:

[0059] A pressing component 4 is installed on top of the flexible film 2 through a partition 3, with the upper circuit layer 402 positioned above the lower circuit layer 5 to improve pressing comfort. Simultaneously, four arc-shaped rebound mechanisms 6 are installed between the flexible film 2 and the base 1 to enhance the high rebound performance of the flexible film 2 and reduce the probability of the rebound mechanism failing to reset. When the user presses the switch, the force is first applied to the pressing component 4. Due to its material properties, the pressing component 4 deforms, absorbing some of the pressure, and then transmits the remaining pressure to the upper circuit layer 402. This causes the contacts of the upper circuit layer 402 to deform downwards and contact the electrode plate of the lower circuit layer 5 for conduction. During this process, the flexible film 2 deforms in conjunction with the rebound mechanism 6. After the finger is released, the pressing component 4 is bounced up by the rebound force of the rebound mechanism 6. The pressing component 4 also absorbs part of the bounced force, reducing the reaction force transmitted to the finger.

[0060] Compared with related technologies, the high-tactile flexible thin-film circuit switch provided by this utility model has the following advantages:

[0061] Beneficial effects:

[0062] To improve the comfort and rebound of the membrane circuit switch, a pressing component 4 is installed on top of the flexible membrane 2 via a partition 3, with the upper circuit layer 402 positioned above the lower circuit layer 5, thus enhancing pressing comfort. Simultaneously, four arc-shaped rebound mechanisms 6 are installed between the flexible membrane 2 and the base 1, improving the high rebound performance of the flexible membrane 2 and reducing the probability of the rebound mechanism failing to reset. This design effectively alleviates the impact on the user's fingers when the metal pressing plate springs back, reducing fatigue during long-term operation. Furthermore, the four arc-shaped rebound mechanisms 6, with slightly larger diameters at the top and bottom and slightly smaller in the middle, increase the rebound force, working in conjunction with the flexible membrane 2 to enhance the rebound effect. This allows the user to trigger the switch more accurately when pressing, reducing misoperation and improving the user experience.

[0063] Second Embodiment

[0064] Please refer to the following: Figures 5-6 - Figure 7 , Figure 5 A schematic diagram of the structure of a second embodiment of the high-tactile flexible thin-film circuit switch provided by this utility model; Figure 6 A structural schematic diagram of the fixing ring is provided for this utility model;

[0065] Figure 7 Provided for this utility model Figure 6 The enlarged view at point C shows a high-tactile flexible thin-film circuit switch based on the first embodiment of this application. The second embodiment of this application proposes another high-tactile flexible thin-film circuit switch. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0066] Specifically, the difference between the high-tactile flexible thin-film circuit switch provided in the second embodiment of this application and the following is noted: Figure 5 , Figure 6 and Figure 7 A fixing ring 11 is installed on the top of the base 1, and a sealing groove 12 is provided on the side of the fixing ring 11 and the film ring 202 adjacent to each other.

[0067] The sealing groove 12 is misaligned, the top of the fixing ring 11 contacts the bottom of the spring mechanism 6, the middle position of the fixing ring 11 is located on the outer surface of the lower circuit layer 5, and the top of the fixing ring 11 has a hole for threaded connection with the fixing structure 13.

[0068] Please refer to Figure 5 , Figure 6 and Figure 7 The top of the film ring 202 is provided with a plurality of fixing structures 13, and a sealing assembly 10 is installed on the side of the fixing ring 11 and the film ring 202 adjacent to each other;

[0069] The fixing structure 13 is threaded through the film ring 202, the sealing component 10 and the fixing ring 11, and can fix the flexible film 2.

[0070] Please refer to Figure 5 , Figure 6 and Figure 7 The sealing assembly 10 includes a sealing ring 101 and two protrusions 102, the protrusions 102 being located at the top and bottom ends of the sealing ring 101, respectively.

[0071] The two protrusions 102 are also misaligned, and the sealing assembly 10 is made of rubber.

[0072] Compared with related technologies, the high-tactile flexible thin-film circuit switch provided by this utility model has the following advantages:

[0073] Beneficial effects:

[0074] To facilitate the replacement of the flexible membrane 2, a fixing ring 11 with a sealing groove 12 is installed on the base 1. Then, the sealing assembly 10 is installed on the fixing ring 11, and the membrane ring 202 of the flexible membrane 2 is fixed to the sealing assembly 10 through the fixing structure 13 to ensure the sealing of the connection. If the flexible membrane 2 is damaged and needs to be replaced, the flexible membrane 2 can be removed and replaced simply by removing the fixing structure 13. Through this design, a flexible membrane 2 that can be quickly replaced is used, which facilitates replacement after damage and reduces the difficulty of replacement.

[0075] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-tactile flexible thin-film circuit switch, characterized in that, include: Base and thin film ring; A flexible film is mounted on top of a base. Multiple rebound mechanisms are mounted on the inner surface of the flexible film. A partition is mounted on the outer surface of the flexible film. A pressing assembly is mounted on top of the partition. The pressing assembly includes a flexible pressing sheet, an upper circuit layer, and a connecting bolt. The bottom end of the connecting bolt is mounted on the top of the upper circuit layer, and the top end of the connecting bolt is mounted on the bottom of the flexible pressing sheet. The lower circuit layer is installed at the top center of the base.

2. The high-tactile flexible thin-film circuit switch according to claim 1, characterized in that, The flexible film is a polyimide film, and the separator is a polyester film.

3. The high-tactile flexible thin-film circuit switch according to claim 1, characterized in that, The flexible film and the partition both have perforations at their top ends. The connecting bolt and the flexible pressing sheet are made of silicone. The partition has an installation groove at its top end, and a fluorescent ring is provided at the top end of the installation groove.

4. The high-tactile flexible thin-film circuit switch according to claim 1, characterized in that, The spring mechanism includes a spring ring, a force-dispersing hole, and a spring opening. The spring opening passes through the spring ring and is located in the middle. The force-dispersing hole passes through both ends of the spring ring near the top and bottom. The spring mechanism is made of polyetheretherketone (PEEK).

5. The high-tactile flexible thin-film circuit switch according to claim 1, characterized in that, A fixing ring is installed on the top of the base, and a sealing groove is opened on the adjacent side of the fixing ring and the film ring.

6. The high-tactile flexible thin-film circuit switch according to claim 5, characterized in that, The top of the film ring is provided with multiple fixing structures, and a sealing component is installed on the side of the fixing ring and the film ring adjacent to each other.

7. The high-tactile flexible thin-film circuit switch according to claim 6, characterized in that, The sealing assembly includes a sealing ring and two raised strips, which are located at the top and bottom ends of the sealing ring, respectively.

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