Dual-magnet self-power generation button

Abstract

The utility model discloses a kind of double-magnet self-generating buttons, belong to power generation device field, including soft magnetic shell body, center shaft is provided on soft magnetic shell body, coil assembly and permanent magnet assembly are provided on center shaft;Coil assembly includes mounting bracket and coil;Permanent magnet assembly includes soft magnetic plate, fixed frame, magnet;Initial state, soft magnetic plate is contacted with the magnet of one side, first closed magnetic circuit is formed at this time;Press center shaft, center shaft drives soft magnetic plate and the magnet of other side contact, second closed magnetic circuit is formed at this time, the direction of magnetic force line in second closed magnetic circuit through soft magnetic plate is opposite with the direction of magnetic force line in first closed magnetic circuit through soft magnetic plate.The utility model changes the direction of magnetic force line of soft magnetic plate by the movement of center shaft, drives soft magnetic plate and different magnet contact, current is strong, power supply is enough with high power generation efficiency;It is ingenious in structure, and the part is less in composition, closed magnetic circuit is simple, manufacturing is convenient, improve production efficiency, reduce manufacturing cost, assemble fast.

Description

Technical Field

[0001] This utility model relates to the field of power generation devices, and in particular to a dual-magnet self-generating button. Background Technology

[0002] Self-generating modules utilize the principle of electromagnetic induction. By pressing or other methods, the direction of magnetic flux is changed, generating an electromotive force in a coil, which in turn induces a current in a closed circuit. Due to their compact structure, self-generating modules are widely used in wireless control switches or devices, such as wireless doorbell buttons, wireless light switches, remote controls, and wireless keyboards.

[0003] Common self-generating modules mainly consist of two parts: a coil and a magnetic circuit. The magnetic circuit typically comprises a permanent magnet, a magnetic guide frame, and a switching lever. The coil is wound around the magnetic circuit, and the switching lever changes the direction of the magnetic flux through the coil, inducing a current in the coil. Most dual-magnet self-generating modules use a magnet-opposed structure, where two magnets are positioned opposite each other on the upper and lower sides of the switching lever. To reduce mutual interference between the magnetic fields of the two magnets, a certain distance needs to be maintained between them, which necessitates a larger toggle travel on the switching lever. However, a larger toggle travel is detrimental to the tactile feel of the pressing operation and also hinders the flat design of the self-generating module. Utility Model Content

[0004] The purpose of this invention is to provide a dual-magnet self-generating button to solve the problems existing in current self-generating modules.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a dual-magnet self-generating button, comprising a housing, an end cap at the open end of the housing, a button on the end cap, an installation cavity inside the housing and the end cap, a soft magnetic shell inside the installation cavity, a central shaft through the soft magnetic shell, springs between one end of the central shaft and the inner wall of the housing, and between the other end of the central shaft and the button, and a coil assembly and a permanent magnet assembly on the central shaft;

[0007] The coil assembly includes a mounting bracket and a coil, the mounting bracket being disposed on the central shaft, and the coil being disposed on the mounting bracket;

[0008] The permanent magnet assembly includes a soft magnetic plate, which is disposed on the central shaft. A fixing frame is disposed on the outer side of the soft magnetic plate, and magnets are disposed on both sides of the fixing frame.

[0009] In the initial state, the soft magnetic plate is in contact with the magnet on one side, forming a first closed magnetic circuit. Pressing the button pushes the central shaft to move, and the central shaft causes the soft magnetic plate to contact the magnet on the other side, forming a second closed magnetic circuit. The direction of the magnetic field lines passing through the soft magnetic plate in the second closed magnetic circuit is opposite to the direction of the magnetic field lines passing through the soft magnetic plate in the first closed magnetic circuit.

[0010] Furthermore, the soft magnetic housing includes a main housing, with a first end plate and a second end plate respectively provided at both ends of the main housing. A first receiving cavity is formed between the main housing and the second end plate, and a second receiving cavity is formed between the main housing and the first end plate. The central shaft passes through the first receiving cavity and the second receiving cavity. The coil assembly is disposed in the first receiving cavity, and the permanent magnet assembly is disposed in the second receiving cavity.

[0011] Furthermore, the main housing and the second end plate are configured as a separate structure.

[0012] Furthermore, the main housing and the second end plate are integrally formed.

[0013] Furthermore, the central shaft includes a first shaft segment, one end of which is provided with a second shaft segment, the diameter of which is smaller than the diameter of the first shaft segment.

[0014] Furthermore, the mounting bracket is disposed on the first shaft segment.

[0015] Furthermore, the soft magnetic plate is disposed on the second shaft segment, with one side of the soft magnetic plate pressed against the shaft shoulder, and the other side of the soft magnetic plate locked by a nut.

[0016] Furthermore, the fixing frame includes a body, and positioning grooves are provided on both sides of the body. The positioning grooves are annular grooves, and the magnets are circular rings disposed within the positioning grooves.

[0017] Furthermore, a gap is provided between the main body and the inner wall of the soft magnetic shell.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0019] In its initial state, the soft magnetic plate is in contact with a magnet on one side, forming a first closed magnetic circuit. Pressing the button moves the central shaft, which in turn causes the soft magnetic plate to contact a magnet on the other side, forming a second closed magnetic circuit. The direction of the magnetic field lines passing through the soft magnetic plate in the second closed magnetic circuit is opposite to that in the first closed magnetic circuit. By moving the central shaft, the soft magnetic plate can contact different magnets, thus changing the direction of the magnetic field lines. Based on the principle of electromagnetic induction, the coil generates current, making it suitable for a push-button self-generating device with high power generation efficiency, strong current, and sufficient power supply. This invention has a clever structure with few components. The closed magnetic circuit formed by the permanent magnet assembly and the coil assembly is simple, easy to manufacture, greatly improves production efficiency, reduces manufacturing costs, and allows for quick assembly. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the dual-magnet self-generating button of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the dual-magnet self-generating button of this utility model from another angle;

[0023] Figure 3 This is a front view of the dual-magnet self-generating button of this utility model;

[0024] Figure 4 This is a cross-sectional view of the dual-magnet self-generating button of this utility model along the AA direction;

[0025] Figure 5 This is a cross-sectional view of the soft magnetic shell of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the central axis of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the present invention without the outer shell, end cap, and button.

[0028] Figure 8 This is a three-dimensional structural diagram of the present invention from another angle, with the outer shell, end cap, and button removed;

[0029] Figure 9 This is a schematic diagram of the structure of the present invention after removing the outer shell, end cap, button, soft magnetic shell, and spring;

[0030] Figure 10 This is a schematic diagram of the structure of the magnet and soft magnetic plate of this utility model;

[0031] Figure 11This is a schematic diagram of the structure of the fixing frame and magnet of this utility model;

[0032] Figure 12 This is a structural schematic diagram of the fixing frame and magnet of this utility model from another angle;

[0033] Figure 13 This is a schematic diagram of the structure of the fixing frame of this utility model;

[0034] Figure 14 for Figure 4 Enlarged view of point B in the middle;

[0035] Figure 15 This is a left view of the dual-magnet self-generating button of this utility model;

[0036] Figure 16 This is a cross-sectional view of the dual-magnet self-generating button of this utility model in the CC direction.

[0037] Explanation of reference numerals in the attached diagram: 1. Soft magnetic housing; 2. Central shaft; 3. Mounting bracket; 4. Coil; 5. Fixing bracket; 6. Magnet; 7. Soft magnetic plate; 8. Nut; 9. Spring; 10. Outer shell; 11. End cap; 12. Button;

[0038] 1-1 Main housing; 1-2 First end plate; 1-3 Second end plate; 1-4 First receiving cavity; 1-5 Second receiving cavity; 2-1 First shaft section; 2-2 Second shaft section; 2-3 Boss; 5-1 Body; 5-2 Positioning groove; 5-3 Limiting block; 5-4 Through groove. Detailed Implementation

[0039] Example 1

[0040] like Figure 1-16 As shown, a dual-magnet self-generating button includes a housing 10, an end cap 11 at the open end of the housing 10, the end cap 11 being snapped onto the housing 10, a button 12 mounted on the end cap 11, an installation cavity inside the housing 10 and the end cap 11, a soft magnetic housing 1 inside the installation cavity, a central shaft 2 penetrating through the soft magnetic housing 1, springs 9 being provided between one end of the central shaft 2 and the inner wall of the housing 10, and between the other end of the central shaft 2 and the button 12, and a coil assembly and a permanent magnet assembly being provided on the central shaft 2;

[0041] The coil assembly includes a mounting bracket 3 and a coil 4. The mounting bracket 3 is mounted on the central shaft 2, and the coil 4 is wound around the mounting bracket 3. The mounting bracket 3 is made of plastic.

[0042] The permanent magnet assembly includes a soft magnetic plate 7, which is mounted on the central shaft 2. A fixing frame 5 is provided on the outer side of the soft magnetic plate 7, and magnets 6 are installed on both sides of the fixing frame 5. The magnets 6 are semi-circular rings.

[0043] Initially, the soft magnetic plate 7 is in contact with the magnet 6 on one side, forming a first closed magnetic circuit. Pressing button 12 moves the central shaft 2, causing the soft magnetic plate 7 to contact the magnet 6 on the other side, forming a second closed magnetic circuit. The direction of the magnetic field lines passing through the soft magnetic plate 7 in the second closed magnetic circuit is opposite to the direction of the magnetic field lines passing through the soft magnetic plate 7 in the first closed magnetic circuit. After releasing button 12, the soft magnetic plate 7 returns to its original position under the elastic force of spring 9.

[0044] like Figure 5 As shown, the soft magnetic housing 1 includes a main housing 1-1. A first end plate 1-2 and a second end plate 1-3 are respectively installed at both ends of the main housing 1-1. A first receiving cavity 1-4 is formed between the main housing 1-1 and the second end plate 1-3, and a second receiving cavity 1-5 is formed between the main housing 1-1 and the first end plate 1-2. The inner diameter of the first receiving cavity 1-4 is smaller than the inner diameter of the second receiving cavity 1-5. The central shaft 2 passes through both the first receiving cavity 1-4 and the second receiving cavity 1-5. The coil assembly is disposed within the first receiving cavity 1-4, and the permanent magnet assembly is disposed within the second receiving cavity 1-5. In this embodiment, the main housing 1-1 and the second end plate 1-3 are separate structures.

[0045] like Figure 6 As shown, the central shaft 2 includes a first shaft segment 2-1, one end of which is connected to a second shaft segment 2-2. The diameter of the second shaft segment 2-2 is smaller than the diameter of the first shaft segment 2-1. The mounting bracket 3 is disposed on the first shaft segment 2-1. The soft magnetic plate 7 is mounted on the second shaft segment 2-2, with one side of the soft magnetic plate 7 pressed against the shaft shoulder, and the other side of the soft magnetic plate 7 locked by a nut 8.

[0046] The fixing frame 5 includes a body 5-1, and positioning grooves 5-2 are provided on both sides of the body 5-1. The positioning grooves 5-2 are set as annular grooves, and the magnet 6 is set as a ring and is disposed in the positioning grooves 5-2.

[0047] The outer side of the main body is connected to several limiting blocks 5-3, which are evenly distributed in a circle. The soft magnetic shell 1 is provided with a receiving groove. After installation, the limiting blocks 5-3 are located in the receiving groove. A through groove 5-4 is provided on one side of two symmetrically arranged limiting blocks 5-3. In this embodiment, there are four limiting blocks 5-3 and two through grooves 5-4.

[0048] like Figure 14 As shown, a gap d is provided between the body 5-1 and the inner wall of the soft magnetic housing 1. Specifically, after installation, there is a gap d between the two end faces of the body 5-1 and the inner walls of the two sides of the second receiving cavity 1-5, and the magnet 6 is in contact with the inner walls of the two sides of the second receiving cavity 1-5. This design avoids contact between the fixing frame 5 and the soft magnetic housing 1.

[0049] Example 2

[0050] Based on Embodiment 1, this embodiment improves the structure of the soft magnetic shell 1, wherein the main shell 1-1 and the second end plate 1-3 are integrally formed.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A dual-magnet self-generating button, characterized in that: The device includes a housing (10), an end cap (11) is provided at the open end of the housing (10), a button (12) is provided on the end cap (11), an installation cavity is provided inside the housing (10) and the end cap (11), a soft magnetic housing (1) is provided inside the installation cavity, a central shaft (2) is provided through the soft magnetic housing (1), a spring (9) is provided between one end of the central shaft (2) and the inner wall of the housing (10), and between the other end of the central shaft (2) and the button (12), and a coil assembly and a permanent magnet assembly are provided on the central shaft (2); The coil assembly includes a mounting bracket (3) and a coil (4), the mounting bracket (3) being disposed on the central shaft (2), and the coil (4) being disposed on the mounting bracket (3); The permanent magnet assembly includes a soft magnetic plate (7), which is disposed on the central shaft (2). A fixing frame (5) is disposed on the outer side of the soft magnetic plate (7), and magnets (6) are disposed on both sides of the fixing frame (5). In the initial state, the soft magnetic plate (7) is in contact with the magnet (6) on one side, forming a first closed magnetic circuit. Pressing the button (12) pushes the central shaft (2) to move, and the central shaft (2) causes the soft magnetic plate (7) to contact the magnet (6) on the other side, forming a second closed magnetic circuit. The direction of the magnetic lines of force passing through the soft magnetic plate (7) in the second closed magnetic circuit is opposite to the direction of the magnetic lines of force passing through the soft magnetic plate (7) in the first closed magnetic circuit.

2. The dual-magnet self-generating button according to claim 1, characterized in that: The soft magnetic housing (1) includes a main housing (1-1), with a first end plate (1-2) and a second end plate (1-3) respectively provided at both ends of the main housing (1-1). A first receiving cavity (1-4) is formed between the main housing (1-1) and the second end plate (1-3), and a second receiving cavity (1-5) is formed between the main housing (1-1) and the first end plate (1-2). The central shaft (2) passes through the first receiving cavity (1-4) and the second receiving cavity (1-5). The coil assembly is disposed in the first receiving cavity (1-4), and the permanent magnet assembly is disposed in the second receiving cavity (1-5).

3. The dual-magnet self-generating button according to claim 2, characterized in that: The main housing (1-1) and the second end plate (1-3) are configured as a split structure.

4. The dual-magnet self-generating button according to claim 2, characterized in that: The main shell (1-1) and the second end plate (1-3) are integrally formed.

5. The dual-magnet self-generating button according to claim 1, characterized in that: The central shaft (2) includes a first shaft segment (2-1), and a second shaft segment (2-2) is provided at one end of the first shaft segment (2-1). The diameter of the second shaft segment (2-2) is smaller than the diameter of the first shaft segment (2-1).

6. The dual-magnet self-generating button according to claim 5, characterized in that: The mounting bracket (3) is mounted on the first shaft segment (2-1).

7. The dual-magnet self-generating button according to claim 5, characterized in that: The soft magnetic plate (7) is disposed on the second shaft section (2-2), one side of the soft magnetic plate (7) is pressed against the shaft shoulder, and the other side of the soft magnetic plate (7) is locked by a nut (8).

8. The dual-magnet self-generating button according to claim 1, characterized in that: The fixing frame (5) includes a body (5-1), and a positioning groove (5-2) is provided in the body (5-1) near both sides. The positioning groove (5-2) is set as an annular groove, and the magnet (6) is set as a ring. The magnet (6) is set in the positioning groove (5-2).

9. The dual-magnet self-generating button according to claim 8, characterized in that: A gap is provided between the main body (5-1) and the inner wall of the soft magnetic shell (1).

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