Low-pressing force balanced force type multi-key self-power generation module

Abstract

The application discloses a low-pressing-force balanced force type multi-key self-generating module and relates to the technical field of passive self-generating switches. The low-pressing-force balanced force type multi-key self-generating module comprises a bottom shell, an upper shell, multi-contact silica gel keys, a circuit board, a self-generating module, a pressing rod main body, a reset spring, a shaft three and a panel. The bottom shell is internally provided with a clamping groove. The self-generating module is fixed in the bottom shell through buckling. The top of the upper shell is connected with a clamping frame through clamping. The bottom of the pressing rod main body is connected with a bottom frame through clamping. The bottom of the bottom frame is connected with the top of the bottom shell through clamping. The bottom of the panel is connected with a panel clamping shell through clamping. The low-pressing-force balanced force type multi-key self-generating module has the advantages that the self-generating module can be driven by a pressing rod lever to generate electricity, light-weight pressing, multi-key force balance, part simplification, convenient assembly, and improvement of the feel and durability of the passive switch key.

Description

Technical Field

[0001] This invention relates to the field of self-generating switch technology, specifically a low-pressure balanced force multi-button self-generating module. Background Technology

[0002] The low-pressure balanced force multi-button self-generating module is a dual-lever transmission multi-button self-generating module that separates button circuit conduction and kinetic energy generation into two independent action components. It solves the technical pain points of traditional multi-button self-generating modules, such as edge button feel, inconsistent pressing pressure, large number of parts, and complex assembly. It can achieve low pressing pressure and balanced button feel, without battery power. It relies on the mechanical energy of pressing to complete power generation and button signal output. It is widely used in smart home wireless switches, industrial passive buttons, wireless call devices and other scenarios.

[0003] Existing multi-button self-generating button modules generally rely on stamped springs and POM plastic transmission components for reset and transmission. In multi-button structures, there is a significant difference in force between the edge buttons and the center button, with the edge buttons requiring significantly more pressure, resulting in inconsistent tactile feedback. The springs lack radial restraint, are prone to lateral displacement under pressure, and exhibit unstable deformation. Furthermore, the circuit conduction and power generation drive share the same set of components, leading to mutual interference. The large number of parts and cumbersome assembly process hinder module miniaturization and mass production efficiency. Therefore, this paper proposes a low-pressure, balanced-force multi-button self-generating module. Summary of the Invention

[0004] This invention provides a low-pressure, balanced force multi-button self-generating module, which can generate electricity by being driven by a pressing lever, achieving lightweight pressing, balanced force on multiple buttons, simplified parts, convenient assembly, and improved feel and durability of passive switch buttons.

[0005] This invention provides the following technical solution: a low-pressure balanced force multi-button self-generating module, comprising a bottom shell, an upper shell, multi-contact silicone buttons, a circuit board, a self-generating module, a pressure rod body, a return spring, a shaft, and a panel. The bottom shell has a built-in slot, and the self-generating module is fixed inside the bottom shell by a snap-fit. The top of the upper shell is snap-fitted to a snap-fit ​​bracket, the bottom of the pressure rod body is snap-fitted to a base frame, the bottom of the base frame is snap-fitted to the top of the bottom shell, and the bottom of the panel is snap-fitted to a panel retainer. The end of the shaft three is hinged to the inner side of the bottom shell, and the side wall of the pressure rod body is connected to the shaft two. The pressure rod body includes a pressing rod one and a pressing rod two, which are symmetrically hinged to the outer ring of the shaft three.

[0006] As a preferred embodiment of the present invention, two return springs are provided, both of which are located on the same side of the shaft. One end of the return spring is fixedly connected to a circular hole opened at the top of the pressure rod body, and the other end of the return spring passes through a through hole. The top of the return spring is snapped into the inner wall of the upper shell.

[0007] As a preferred embodiment of the present invention, the circuit board is located above the self-generating module, and a through hole is provided on the inner side of the circuit board.

[0008] As a preferred embodiment of the present invention, the multi-contact silicone button is located between the upper shell and the circuit board, the top of the upper shell has a button avoidance through hole, and the top of the upper shell is provided with an upper shell button.

[0009] As a preferred embodiment of the present invention, the side wall of the upper shell is provided with a shaft, and the end of the shaft is hinged to the panel.

[0010] As a preferred embodiment of the present invention, a sliding groove is provided on the inner side of the pressure rod body, and the sliding groove is in sliding fit with the shaft.

[0011] As a preferred embodiment of the present invention, a pressing head is connected to the bottom of the panel, and a pressing block is connected to the bottom of the panel.

[0012] Compared with the prior art, the present invention provides a low-pressure, balanced force multi-button self-generating module, which has the following advantages: 1. This low-pressure, balanced force-bearing multi-button self-generating module features a reset spring that penetrates the circuit board. The through-hole in the circuit board provides radial guidance and limit for the spring, preventing lateral displacement under pressure. Compared to traditional external springs without a guiding structure, this design ensures stable spring deformation trajectory and significantly improves the uniformity of force distribution across multiple buttons. The dual-spring-on-the-same-side and dual-lever force-saving structure eliminates the need for single-torsion springs and split spring sheets. The two reset springs distribute the reset load, leveraging leverage to amplify the stroke and reduce pressing force, resulting in a more consistent feel between the edge and center buttons.

[0013] 2. This low-pressure, balanced force multi-button self-generating module features functional partitioning and a simplified structure. The silicone buttons are dedicated to circuit switching, and the pressing lever is dedicated to driving power generation. It eliminates the need for POM plastic accessories and multiple sets of stamped springs required in traditional solutions, reducing the number of parts, simplifying injection molding, stamping, and assembly processes, improving yield, and providing excellent durability. The springs are limited by the circuit board through-holes and the upper shell at two points, making them less prone to misalignment and fatigue failure even after hundreds of thousands of reciprocating presses. This solves the problems of fatigue caused by single-point force on traditional springs and temperature deformation failure of POM accessories. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a low-pressure balanced force multi-button self-generating module according to the present invention. Figure 2 This is a schematic diagram of the rear three-dimensional structure of a low-pressure balanced force multi-button self-generating module according to the present invention. Figure 3 This is a schematic diagram of the exploded connection structure of a low-pressure balanced force-receiving multi-button self-generating module according to the present invention; Figure 4 This is a schematic diagram (II) of the exploded connection structure of a low-pressure balanced force-receiving multi-button self-generating module according to the present invention; Figure 5 This is a schematic diagram of the main body connection structure of the pressure rod of a low-pressure balanced force-receiving multi-button self-generating module according to the present invention.

[0015] In the diagram: 1. Bottom shell; 2. Top shell; 3. Shaft 1; 4. Top shell button; 5. Multi-contact silicone button; 6. Circuit board; 7. Through hole; 8. Pressure rod body; 9. Pressure rod 1; 10. Pressure rod 2; 11. Shaft 2; 12. Shaft 3; 13. Sliding groove; 14. Self-generating module; 15. Return spring; 16. Press head; 17. Press block; 18. Panel; 19. Panel clip; 20. Clip bracket; 21. Base frame. Detailed Implementation

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

[0017] Please see Figures 1-5 This invention discloses a low-pressure balanced force multi-button self-generating module, including a bottom shell 1, an upper shell 2, a multi-contact silicone button 5, a circuit board 6, a self-generating module 14, a pressure rod body 8, a return spring 15, a shaft 12, and a panel 18. The bottom shell 1 has a built-in slot, and the self-generating module 14 is fixed inside the bottom shell 1 by a buckle. The top of the upper shell 2 is snapped with a snap-fit ​​bracket 20, the bottom of the pressure rod body 8 is snapped with a base frame 21, the bottom of the base frame 21 is snapped with the top of the bottom shell 1, and the bottom of the panel 18 is snapped with a panel retainer 19. The end of shaft 12 is hinged to the inner side of the bottom shell 1. Shaft 2 11 is connected to the side wall of the pressure rod body 8. The pressure rod body 8 includes pressing rod 1 9 and pressing rod 2 10. Pressing rod 1 9 and pressing rod 2 10 are symmetrically hinged to the outer ring of shaft 12.

[0018] Specifically, when the user presses the upper shell button 4 or the multi-contact silicone button 5, the multi-contact silicone button 5 moves downward. On the one hand, the bottom conductive adhesive particles press down on the gold fingers of the contact circuit board 6 to achieve circuit connection. On the other hand, the lower end of the button presses against the upper end of the pressure rod body 8. The first pressure rod 9 and the second pressure rod 10 swing around the third shaft 12 as a fulcrum, driving the self-generating module 14 downward to convert the mechanical energy of the press into electrical energy to supply the wireless signal transmission. When the external pressing force is removed, the two return springs 15 release their elasticity, pushing the pressure rod body 8 to rotate back to its original position. The multi-contact silicone button 5 rebounds synchronously, the circuit is disconnected, and a complete button power generation cycle is completed. The panel 18, the panel retainer 19, and the upper shell button 4 are fixed together by the snap-fit ​​bracket 20 to improve installation stability. The base frame 21 is snap-fitted and positioned with the pressure rod body 8 and the bottom shell 1 to maintain the installation stability of the pressure rod body 8.

[0019] In this embodiment, two return springs 15 are provided, and both return springs 15 are located on the same side of shaft 3 12. One end of the return spring 15 is fixedly connected to the round hole opened at the top of the pressure rod body 8, and the other end of the return spring 15 passes through the through hole 7. The top of the return spring 15 is snapped into the inner wall of the upper shell 2.

[0020] Specifically, the two return springs 15 are configured to correspond to the first press rod 9 and the second press rod 10 respectively. The two return springs 15 share the overall return load, reduce the spring force load of a single spring, reduce the pressing force of each button position of the module, and make the pressing feel of the edge buttons and the center buttons more consistent.

[0021] In this embodiment, the circuit board 6 is located above the self-generating module 14, and a through hole 7 is provided on the inner side of the circuit board 6.

[0022] Specifically, when the return spring 15 is compressed and then rebounds, the through hole 7 restricts the return spring 15 from lateral displacement and tilting, ensuring the stability of the deformation trajectory of the return spring 15, avoiding spring wear and fatigue failure, and improving the long-term reliability of the module.

[0023] In this embodiment, the multi-contact silicone button 5 is located between the upper shell 2 and the circuit board 6. The top of the upper shell 2 is provided with a button clearance through hole, and the top of the upper shell 2 is provided with an upper shell button 4.

[0024] Specifically, the multi-contact silicone button 5 is dedicated to triggering the circuit to open and close, while the lever mechanism of the pressing rod body 8, pressing rod one 9 and pressing rod two 10, is dedicated to driving the self-generating module 14 to generate electricity. The circuit conduction and kinetic energy generation belong to two independent action components, and their actions do not interfere with each other, resulting in higher stability of button recognition and power generation output.

[0025] In this embodiment, the side wall of the upper shell 2 is provided with a shaft 3, and the end of the shaft 3 is hinged to the panel 18.

[0026] Specifically, panel 18 enables external button input, adapting to the assembly requirements of external decorative panels 18 such as wall switch panels 18.

[0027] In this embodiment, a sliding groove 13 is provided on the inner side of the pressure rod body 8, and the sliding groove 13 is in sliding fit with the shaft 12.

[0028] Specifically, when the pressing rod 19 and pressing rod 210 swing around the shaft 312 as the fulcrum, the shaft 312 slides relative to each other inside the sliding groove 13, thereby limiting the maximum swing stroke of the pressing rod body 8, playing a limiting and guiding role, preventing the pressing from exceeding the stroke and damaging the self-generating module 14, and playing a protective role for the internal power generation components.

[0029] In this embodiment, a pressing head 16 is connected to the bottom of the panel 18, and a pressing block 17 is connected to the bottom of the panel 18.

[0030] Specifically, when the user presses the external panel 18, the pressing head 16 and the pressing block 17 press the multi-contact silicone button 5, thereby triggering the subsequent circuit to conduct and generate electricity, realizing the pressing input of the external panel 18.

[0031] The working principle and usage process of this invention: In use, button input can be achieved through the upper shell button 4, the multi-contact silicone button 5, or the external panel 18. When external pressure is applied, the button component moves downward, and the conductive rubber particles at the bottom of the multi-contact silicone button 5 press down to contact the circuit board 6 gold finger to guide the circuit and identify the button signal. At the same time, the button presses the main body of the pressure rod 8, and the first pressure rod 9 and the second pressure rod 10 swing around the third shaft 12 as the fulcrum, driving the self-generating module 14 to convert the mechanical energy of pressing into electrical energy to supply the wireless signal transmission. When pressed, the return spring 15 is compressed. The through hole 7 of the circuit board 6 guides the return spring 15 radially to prevent the spring from tilting. The two return springs 15 share the load, reducing the button pressing force. The button feel is uniform in all positions. The sliding groove 13 slides with the shaft 12 to limit the maximum swing stroke and protect the self-generating module 14. When the pressing force is removed, the return spring 15 releases its elastic force, driving the pressure rod body 8 back to its original position. The multi-contact silicone button 5 rebounds, the circuit is disconnected, and the module returns to its initial state.

[0032] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-pressure, balanced-force multi-button self-generating module, comprising a bottom shell (1), an upper shell (2), multi-contact silicone buttons (5), a circuit board (6), a self-generating module (14), a pressure rod body (8), a return spring (15), a shaft (12), and a panel (18), characterized in that: The bottom shell (1) has a built-in slot, and the self-generating module (14) is fixed inside the bottom shell (1) by a buckle. The top of the upper shell (2) is connected to a snap-fit ​​bracket (20), and the bottom of the pressure rod body (8) is connected to a base frame (21). The bottom of the base frame (21) is connected to the top of the bottom shell (1), and the bottom of the panel (18) is connected to a panel clip (19). The end of the shaft three (12) is hinged to the inner side of the bottom shell (1), and the side wall of the pressure rod body (8) is connected to the shaft two (11). The pressure rod body (8) includes a pressing rod one (9) and a pressing rod two (10). The pressing rod one (9) and the pressing rod two (10) are symmetrically hinged to the outer ring of the shaft three (12).

2. The low-pressure, balanced force multi-button self-generating module according to claim 1, characterized in that: Two reset springs (15) are provided. Both reset springs (15) are located on the same side of shaft three (12). One end of the reset spring (15) is fixedly connected to the round hole opened at the top of the pressure rod body (8). The other end of the reset spring (15) passes through the through hole (7). The top of the reset spring (15) is snapped into the inner wall of the upper shell (2).

3. The low-pressure, balanced force multi-button self-generating module according to claim 1, characterized in that: The circuit board (6) is located above the self-generating module (14), and a through hole (7) is provided on the inner side of the circuit board (6).

4. The low-pressure, balanced force multi-button self-generating module according to claim 1, characterized in that: The multi-contact silicone button (5) is located between the upper shell (2) and the circuit board (6). The top of the upper shell (2) has a button avoidance through hole, and the top of the upper shell (2) is provided with an upper shell button (4).

5. A low-pressure, balanced-force multi-button self-generating module according to claim 1, characterized in that: The upper shell (2) has a shaft (3) on its side wall, and the end of the shaft (3) is hinged to the panel (18).

6. A low-pressure, balanced-force multi-button self-generating module according to claim 1, characterized in that: The inner side of the pressure bar body (8) is provided with a sliding groove (13), and the sliding groove (13) is in sliding fit with the shaft three (12).

7. A low-pressure, balanced-force multi-button self-generating module according to claim 1, characterized in that: A pressing head (16) is connected to the bottom of the panel (18), and a pressing block (17) is connected to the bottom of the panel (18).

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