Small-stroke large-generating-capacity miniature self-generating module

Abstract

The invention discloses a small-stroke large-generating-capacity miniature self-generating module, and belongs to the technical field of magnetic generation. The miniature self-generating module comprises a magnetic conductive frame, a coil holder, an induction coil, a magnetic conductive driving lever, a first permanent magnet and a second permanent magnet, two ends of the magnetic conductive frame are respectively provided with a magnetic conductive port, the magnetic conductive ports at the two ends are connected through a magnetic conductive side plate, and the first permanent magnet and the second permanent magnet are respectively located on the inner sides of the magnetic conductive ports at the corresponding ends. The magnetic conduction deflector rod penetrates through the induction coil, and the two ends of the magnetic conduction deflector rod are located at or penetrate through the magnetic conduction ports at the corresponding ends respectively; and when the position of the magnetic-conductive driving lever is switched, one end of the magnetic-conductive driving lever can be contacted with the permanent magnet at the corresponding end, and the other end of the magnetic-conductive driving lever is contacted with the corresponding horizontal plate magnetized by the permanent magnet at the opposite end, so that a magnetic circuit in which double magnets participate is formed. According to the micro self-generating module, the left-right arrangement of the double magnets is combined with the magnetic circuit cooperation technology, the shifting stroke of the self-generating module can be reduced, and the effect of the double magnets is fully exerted to improve the generating capacity.

Description

Technical Field

[0001] The invention relates to an electromagnetic self-generating module, and more particularly to a micro self-generating module with a small stroke and a large power generation capacity. Background Art

[0002] The self-generating module uses the principle of electromagnetic induction to change the direction of magnetic flux by pressing, etc., to generate electromotive force in the coil, and then form an induced current in the closed loop. Due to the small structure of the self-generating module, it is widely used in some wireless control switches or devices, such as wireless doorbell buttons, wireless controlled light switches, remote controls and wireless keyboards.

[0003] Common self-generating modules are mainly composed of two parts: a coil and a magnetic circuit. The magnetic circuit part is usually composed of a permanent magnet, a magnetic frame and a switching lever. The coil is wound on the magnetic circuit. The switching lever changes the direction of the magnetic flux passing through the coil, so that an induced current is generated in the coil. Most dual-magnet self-generating modules adopt an opposing magnet structure, that is, the two magnets are relatively arranged on the upper and lower sides of the switching lever. In order to reduce the mutual interference of the magnetic fields between the two magnets, a certain distance needs to be maintained between the two magnets, which results in a larger switching stroke for the switching lever. However, a larger switching stroke is not conducive to the feel of the pressing operation, nor is it conducive to the flat design of the self-generating module.

[0004] Chinese patent publication number CN212909310U discloses "an independent dual-magnet seesaw type micro-generator and a wireless switch using the same", with the authorization announcement date of April 6, 2021. The specification embodiment 1 introduces a micro-generator with two magnets arranged on the left and right. This arrangement of magnets on the left and right is conducive to reducing the toggle stroke, but the patent application emphasizes the "independent dual-magnet" design. In paragraph

[0035] of its specification, it emphasizes that "the first soft magnetic frame and the second soft magnetic frame are arranged facing each other and not in contact with each other". The advantage of this arrangement is that the two magnets are independent of each other. During the toggle switching process of the soft magnetic plate, only one magnet is involved in the work at a time, that is, the magnetic circuits are also independent of each other. However, it is precisely because the magnetic circuits are independent of each other that the two magnets cannot function at the same time, which in turn leads to a low magnetic flux density through the coil and a small power generation capacity.

[0005] Based on the above-mentioned deficiencies in the existing technology, it is necessary to design a micro self-generating module with a small stroke and large power generation capacity. Summary of the invention

[0006] 1. Technical problem to be solved by the invention

[0007] The purpose of the present invention is to overcome the above-mentioned shortcomings of the existing self-generating modules, and to provide a micro self-generating module with a small stroke and a large power generation capacity. The technical solution of the present invention is adopted to combine the left and right arrangement of double magnets with the magnetic circuit coordination technology. On the one hand, it can reduce the sliding stroke of the self-generating module and make it flatter and more compact. On the other hand, it can utilize the magnetization effect of the magnet to participate in the magnetic circuit, give full play to the role of the double magnets, increase the magnetic flux density passing through the induction coil, and thus greatly improve the power generation; the micro self-generating module has the advantages of small sliding stroke and large power generation, and can be widely used in self-generating products such as wireless switches and buttons to improve the pressing touch and signal stability.

[0008] 2. Technical solution

[0009] In order to achieve the above object, the technical solution provided by the present invention is:

[0010] A micro self-generating module with a small stroke and a large power generation capacity of the present invention comprises a magnetic conductive frame, a coil holder, an induction coil, a magnetic conductive lever, a first permanent magnet and a second permanent magnet, wherein the two ends of the magnetic conductive frame are respectively provided with magnetic conductive ports composed of an upper horizontal plate and a lower horizontal plate, the magnetic conductive ports at the two ends are connected by magnetic conductive side plates, the coil holder is arranged between the two magnetic conductive ports, the induction coil is arranged on the coil holder, the first permanent magnet is fixed on the inner side of one magnetic conductive port, the second permanent magnet is fixed on the inner side of another magnetic conductive port, the magnetic conductive lever passes through the induction coil, and the two ends of the magnetic conductive lever are respectively located at or pass through the magnetic conductive ports at the corresponding ends;

[0011] The magnetically conductive lever has a first position and a second position that can be switched relative to the first permanent magnet and the second permanent magnet: in the first position, one end of the magnetically conductive lever contacts the first permanent magnet, and the other end contacts the corresponding horizontal plate away from the second permanent magnet and magnetized by the second permanent magnet, forming a first magnetic circuit; in the second position, one end of the magnetically conductive lever contacts the second permanent magnet, and the other end contacts the corresponding horizontal plate away from the first permanent magnet and magnetized by the first permanent magnet, forming a second magnetic circuit; the directions of the magnetic flux lines passing through the magnetically conductive lever in the first magnetic circuit and the second magnetic circuit are opposite.

[0012] Furthermore, at the first position, the magnetic pole of the contact end of the first permanent magnet and the magnetic conductive lever is opposite in polarity to the magnetic pole of the horizontal plate magnetized by the second permanent magnet and in contact with the magnetic conductive lever;

[0013] At the second position, the magnetic pole of the contact end of the second permanent magnet and the magnetic conductive lever is opposite in polarity to the magnetic pole of the horizontal plate magnetized by the first permanent magnet and in contact with the magnetic conductive lever.

[0014] Furthermore, the magnetic conduction lever switches between the first position and the second position in a swinging manner, and both the first permanent magnet and the second permanent magnet are located on the same side of the magnetic conduction lever.

[0015] Furthermore, the magnetic conduction lever passes through the activity channel of the coil holder. There is a fulcrum in the activity channel for supporting the swinging of the magnetic conduction lever, and the swinging angle α of the magnetic conduction lever is 3° to 6°.

[0016] Furthermore, the first permanent magnet, the second permanent magnet, and the horizontal plates corresponding to the two magnetic conduction ports are all in surface contact with the magnetic conduction lever.

[0017] Furthermore, both ends of the coil holder respectively have extension blocks that can extend into the corresponding magnetic conduction ports. The extension blocks have magnet mounting grooves for positioning the first permanent magnet and the second permanent magnet.

[0018] Furthermore, the magnetic conduction frame is formed by splicing two magnetic conduction plates. Each magnetic conduction plate includes a magnetic conduction side plate. One end of the magnetic conduction side plate has an upper horizontal plate and a lower docking socket, and the other end has a lower horizontal plate and an upper docking socket. The free ends of the upper horizontal plates of the two magnetic conduction plates are respectively inserted and connected to the upper docking sockets of the corresponding magnetic conduction plates, and the free ends of the lower horizontal plates of the two magnetic conduction plates are respectively inserted and connected to the lower docking sockets of the corresponding magnetic conduction plates. The upper horizontal plate and the lower horizontal plate at the same end form the magnetic conduction port, and an intermediate cavity for accommodating the coil holder is formed between the magnetic conduction side plates of the two magnetic conduction plates.

[0019] Furthermore, the structures of the two magnetic conduction plates are exactly the same and are made by sheet metal processing.

[0020] Furthermore, at least one end of the magnetic conduction lever passes out of the corresponding magnetic conduction port, and a shrapnel is provided on the passing-out end of the magnetic conduction lever.

[0021] 3. Beneficial effects

[0022] Adopting the technical solution provided by the present invention, compared with the existing well-known technologies, it has the following remarkable effects:

[0023] (1) A micro self-generating module with a small stroke and a large power generation capacity of the present invention comprises a magnetic frame, a coil holding frame, an induction coil, a magnetic lever, a first permanent magnet and a second permanent magnet, wherein the two ends of the magnetic frame respectively have a magnetic port composed of an upper horizontal plate and a lower horizontal plate, and the magnetic ports at the two ends are connected by magnetic side plates, the magnetic lever passes through the induction coil, and the two ends of the magnetic lever are respectively located at or pass through the magnetic ports at the corresponding ends; the magnetic lever has a first position and a second position that can be switched relative to the first permanent magnet and the second permanent magnet, and at the first position and the second position, one end of the magnetic lever can be connected to the corresponding end. The two ends of the self-generating module are in contact with each other, and the other end is in contact with the corresponding horizontal plate magnetized by the permanent magnet at the opposite end, so as to form a magnetic circuit involving double magnets; the micro self-generating module combines the left and right arrangement of double magnets with the magnetic circuit synergy technology, which can reduce the sliding stroke of the self-generating module on the one hand, making it flatter and more compact, and on the other hand, it can utilize the magnetization of the magnet to participate in the magnetic circuit, give full play to the role of the double magnets, increase the magnetic flux density passing through the induction coil, and thus greatly increase the power generation; it has the advantages of small sliding stroke and large power generation, and can be widely used in self-generating products such as wireless switches and buttons to improve the pressing touch and signal stability.

[0024] (2) The present invention is a micro self-generating module with a small stroke and a large power generation capacity, wherein the magnetic lever switches between a first position and a second position in a swinging manner, and the first permanent magnet and the second permanent magnet are both located on the same side of the magnetic lever. The structure is simple, the manufacturing is convenient, and the switching is flexible and stable.

[0025] (3) The present invention is a micro self-generating module with a small stroke and a large power generation capacity, wherein the magnetic lever is inserted into the movable channel of the coil retaining frame, and the movable channel has a fulcrum for supporting the swing of the magnetic lever. The swing angle α of the magnetic lever is 3° to 6°. Compared with the existing magnet opposing structure, the swing angle of the magnetic lever is smaller and the shifting stroke is smaller.

[0026] (4) In the present invention, a micro self-generating module with a small stroke and a large power generation capacity is provided, wherein the first permanent magnet, the second permanent magnet and the horizontal plates corresponding to the two magnetic conductive ports are in surface contact with the magnetic conductive lever, and the magnetic circuit contact surface is larger, thereby ensuring the magnetic flux density passing through the magnetic conductive lever, and further ensuring the power generation capacity of the micro self-generating module.

[0027] (5) The present invention provides a small-stroke, large-power-generating micro self-generating module, wherein both ends of the coil holder are provided with extension blocks that can extend into the magnetic conductive ports of the corresponding ends, and the extension blocks are provided with magnet mounting grooves for positioning the first permanent magnet and the second permanent magnet. The extension blocks not only facilitate the connection and fixation of the coil holder and the magnetic conductive frame, but also facilitate the positioning and installation of the permanent magnets, thereby improving the structural stability of the micro self-generating module.

[0028] (6) A micro self - power generation module with a small stroke and large power generation of the present invention. Its magnetic conduction frame is composed of two magnetic conduction plates spliced together. Each magnetic conduction plate includes a magnetic conduction side plate. One end of the magnetic conduction side plate has an upper horizontal plate and a lower mating socket, and the other end has a lower horizontal plate and an upper mating socket, which facilitates the assembly and production of the entire self - power generation module.

[0029] (7) A micro self - power generation module with a small stroke and large power generation of the present invention. The structures of its two magnetic conduction plates are exactly the same and are made by sheet metal processing. When manufacturing, only one type of magnetic conduction plate structure needs to be made, which is simple and convenient to manufacture, has a lower manufacturing cost, and is conducive to standardized mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three - dimensional structure schematic diagram of a micro self - power generation module with a small stroke and large power generation of the present invention from one angle;

[0031] Figure 2 is a three - dimensional structure schematic diagram of a micro self - power generation module with a small stroke and large power generation of the present invention from another angle;

[0032] Figure 3 is a disassembled structure schematic diagram of a micro self - power generation module with a small stroke and large power generation of the present invention;

[0033] Figure 4 is a top - view structure schematic diagram of a micro self - power generation module with a small stroke and large power generation of the present invention;

[0034] Figure 5 is Figure 4 a sectional structure schematic diagram in the A - A direction of (the magnetic conduction lever is in the first position state);

[0035] Figure 6 is Figure 4 a sectional structure schematic diagram in the A - A direction of (the magnetic conduction lever is in the second position state);

[0036] Figure 7 is an assembled state schematic diagram of the magnetic conduction frame in the present invention;

[0037] Figure 8 is a three - dimensional structure schematic diagram of a single magnetic conduction plate in the present invention

[0038] Figure 9 is Figure 8 a side - view structure schematic diagram of the magnetic conduction plate in ;

[0039] Figure 10 is a schematic diagram of the flip - and - insert assembly of two magnetic conduction plates in the present invention;

[0040] Figure 11 is a structure schematic diagram of the coil holder in the present invention.

[0041] Explanation of reference numerals in the schematic diagram:

[0042] 1. Magnetic conductive plate; 1a. Middle cavity; 1b. Magnetic conductive port; 1-1. Magnetic conductive side plate; 1-2. Upper horizontal plate; 1-3. Lower horizontal plate; 1-4. Lower mating socket; 1-5. Upper mating socket; 2. Coil holder; 2-1. Movable channel; 2-1a. Fulcrum; 2-2. Extension block; 2-3. Magnet mounting groove; 3. Inductive coil; 4. Magnetic conductive lever; 5. Shrapnel; 6. First permanent magnet; 7. Second permanent magnet. Specific implementation manners

[0043] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0044] [Embodiment 1]

[0045] Combined with Figures 1 to 6 As shown, a small-stroke and large-power-generation micro self-power generation module in this embodiment includes a magnetic conductive frame, a coil holder 2, an inductive coil 3, a magnetic conductive lever 4, a first permanent magnet 6, and a second permanent magnet 7. The magnetic conductive frame is made of soft magnetic material. The two ends of the magnetic conductive frame respectively have magnetic conductive ports 1b composed of an upper horizontal plate 1-2 and a lower horizontal plate 1-3. The magnetic conductive ports 1b at both ends are connected by a magnetic conductive side plate 1-1 to form a magnetic conductive frame with an integral structure. The coil holder 2 is arranged between the two magnetic conductive ports 1b. The coil holder 2 is made of non-magnetic material, such as plastic, etc. The inductive coil 3 is arranged on the coil holder 2. The first permanent magnet 6 is fixed inside one magnetic conductive port 1b, and the second permanent magnet 7 is fixed inside the other magnetic conductive port 1b. The magnetic conductive lever 4 passes through the inductive coil 3, and both ends of the magnetic conductive lever 4 are respectively located at or pass through the corresponding magnetic conductive ports 1b. In this embodiment, both the first permanent magnet 6 and the second permanent magnet 7 are located inside the corresponding magnetic conductive ports 1b. The magnetic conductive lever 4 has a first position and a second position that can be switched relative to the first permanent magnet 6 and the second permanent magnet 7: at the first position, one end of the magnetic conductive lever 4 contacts the first permanent magnet 6, and the other end contacts the corresponding horizontal plate that is far from the second permanent magnet 7 and is magnetized by the second permanent magnet 7, forming a first magnetic circuit; at the second position, one end of the magnetic conductive lever 4 contacts the second permanent magnet 7, and the other end contacts the corresponding horizontal plate that is far from the first permanent magnet 6 and is magnetized by the first permanent magnet 6, forming a second magnetic circuit; the directions of the magnetic induction lines passing through the magnetic conductive lever 4 in the first magnetic circuit and the second magnetic circuit are opposite. At the first position, the magnetic pole of the contact end of the first permanent magnet 6 with the magnetic conductive lever 4 is opposite to the magnetic pole polarity of the horizontal plate that is magnetized by the second permanent magnet 7 and contacts the magnetic conductive lever 4; at the second position, the magnetic pole of the contact end of the second permanent magnet 7 with the magnetic conductive lever 4 is opposite to the magnetic pole polarity of the horizontal plate that is magnetized by the first permanent magnet 6 and contacts the magnetic conductive lever 4.

[0046] To further understand the above magnetic circuit relationship, combined with Figure 5 and Figure 6 The magnetic circuit when the magnetic guide lever 4 is in the first position and the second position is further described:

[0047] like Figure 5 As shown, when the magnetic lever 4 is in the first position, one end of the magnetic lever 4 contacts the N pole of the first permanent magnet 6, and the other end of the magnetic lever 4 contacts the corresponding horizontal plate (lower horizontal plate 1-3) of the corresponding end magnetic port 1b, and the magnetic flux of the first permanent magnet 6 returns to the S pole of the first permanent magnet 6 through the magnetic lever 4, the lower horizontal plate 1-3 at the left end, the magnetic side plate 1-1 and the upper horizontal plate 1-2 at the right end; at the same time, the second permanent magnet 7 magnetizes the lower horizontal plate 1-3 at the left end to the S pole, participates in the magnetic circuit, and increases the magnetic flux density passing through the magnetic lever 4. Similarly, Figure 6 As shown, when the magnetic lever 4 is in the second position, one end of the magnetic lever 4 contacts the N pole of the second permanent magnet 7, and the other end of the magnetic lever 4 contacts the corresponding horizontal plate (lower horizontal plate 1-3) of the corresponding end magnetic port 1b, and the magnetic flux of the second permanent magnet 7 returns to the S pole of the second permanent magnet 7 through the magnetic lever 4, the lower horizontal plate 1-3 at the right end, the magnetic side plate 1-1 and the upper horizontal plate 1-2 at the left end; at the same time, the first permanent magnet 6 magnetizes the lower horizontal plate 1-3 at the right end to the S pole, participates in the magnetic circuit, and increases the magnetic flux density passing through the magnetic lever 4. When the magnetic lever 4 is quickly switched between the first position and the second position, the direction of the magnetic flux in the magnetic lever 4 changes, thereby generating an induced current in the induction coil 3.

[0048] It can be seen that the above-mentioned micro self-generating module combines the left and right arrangement of dual magnets with the magnetic circuit coordination technology. On the one hand, it can reduce the movement stroke of the self-generating module, making it flatter and more compact. On the other hand, it can utilize the magnetization effect of the magnet to participate in the magnetic circuit, give full play to the role of the dual magnets, and increase the magnetic flux density passing through the induction coil, thereby greatly increasing the power generation.

[0049] catch Figure 5 and Figure 6As shown, in this embodiment, the magnetic lever 4 switches between the first position and the second position in a swinging manner, and the first permanent magnet 6 and the second permanent magnet 7 are both located on the same side of the magnetic lever 4. In this way, the magnetic lever 4 swings with its middle as the rotation center to change the contact state between the magnetic lever 4 and the above two permanent magnets. The swinging manner of the magnetic lever 4 has a simple structure, convenient manufacturing, and flexible and stable switching. Specifically, the magnetic lever 4 is inserted into the active channel 2-1 of the coil holder 2, and the active channel 2-1 has a fulcrum 2-1a for supporting the swing of the magnetic lever 4. The middle part of the magnetic lever 4 is supported on the fulcrum 2-1a to achieve its free swing; in this embodiment, the swing angle α of the magnetic lever 4 is preferably 3° to 6°, and 4° to 5° is more preferred. Compared with the existing magnet opposing structure, the swing angle of the magnetic lever is smaller and the switching stroke is smaller. In addition, the first permanent magnet 6, the second permanent magnet 7 and the horizontal plates corresponding to the two magnetic ports 1b are in surface contact with the magnetic lever 4, and the magnetic circuit contact surface is larger, which ensures the magnetic flux density passing through the magnetic lever 4, and thus ensures the power generation of the micro self-generating module. In this embodiment, since the magnetic lever 4 swings and tilts, in order to facilitate surface contact, the upper horizontal plate 1-2 and the lower horizontal plate 1-3 of the magnetic ports 1b at both ends can be provided with a certain slope, referring to Figure 9 As shown, an inclined angle β may be provided between the upper horizontal plate 1-2 and the lower horizontal plate 1-3 and the horizontal plane, and the inclined angle β is half of the above-mentioned swing angle α.

[0050] Specific reference Figure 3 and Figure 11 As shown, in this embodiment, both ends of the coil holder 2 are provided with extension blocks 2-2 that can be extended into the magnetic conductive port 1b of the corresponding end, and the extension block 2-2 is provided with a magnet mounting groove 2-3 for positioning the first permanent magnet 6 and the second permanent magnet 7. The extension block 2-2 not only facilitates the connection and fixation of the coil holder 2 and the magnetic conductive frame, but also facilitates the positioning and installation of the permanent magnet, thereby improving the structural stability of the micro self-generating module.

[0051] [Example 2]

[0052] The basic structure and working principle of a micro self-generating module with a small stroke and large power generation capacity in this embodiment are the same as those in Embodiment 1, except that:

[0053] like Figure 3 , Figures 7 to 9As shown, in this embodiment, the magnetic conductive frame is formed by splicing two magnetic conductive plates 1, each magnetic conductive plate 1 includes a magnetic conductive side plate 1-1, one end of the magnetic conductive side plate 1-1 has an upper horizontal plate 1-2 and a lower pair of sockets 1-4, and the other end has a lower horizontal plate 1-3 and an upper pair of sockets 1-5; the free ends of the upper horizontal plates 1-2 of the two magnetic conductive plates 1 are plugged and connected with the upper pair of sockets 1-5 of the corresponding magnetic conductive plates 1, and the free ends of the lower horizontal plates 1-3 of the two magnetic conductive plates 1 are plugged and connected with the lower pair of sockets 1-4 of the corresponding magnetic conductive plates 1, and the upper horizontal plate 1-2 and the lower horizontal plate 1-3 located at the same end form a magnetic conductive port 1b, and an intermediate cavity 1a for accommodating the coil holder 2 is formed between the magnetic conductive side plates 1-1 of the two magnetic conductive plates 1. The magnetic conductive frame is formed by splicing two magnetic conductive plates 1, which facilitates the assembly and production of the entire self-generating module. During assembly, the induction coil 3 can be pre-wound on the coil holder 2, and the first permanent magnet 6 and the second permanent magnet 7 can be positioned on the coil holder 2. Then, the coil holder 2 with the coil wound on it can be placed between the two magnetic conductive plates 1, and the two magnetic conductive plates 1 can be spliced and assembled. Finally, the magnetic conductive lever 4 can be installed.

[0054] Specifically in this embodiment, the two magnetic conductive plates 1 have the same structure and are made by sheet metal processing. Figure 10 As shown, one magnetic conductive plate 1 is rotated 180° in the horizontal direction relative to the other magnetic conductive plate 1, and then the two magnetic conductive plates 1 can be plugged and connected to form a complete magnetic conductive frame. Only one structure of magnetic conductive plate 1 needs to be made during production, which is simple and convenient to make, with lower production cost, and is conducive to standardized mass production.

[0055] In addition, similar to the existing self-generating module, at least one end of the magnetic lever 4 passes through the magnetic port 1b at the corresponding end, and a spring sheet 5 is provided on the passing end of the magnetic lever 4. The spring sheet 5 is utilized to provide a pushing rebound for the magnetic lever 4, so that the magnetic lever 4 can switch movements quickly, thereby ensuring power generation efficiency and power generation.

[0056] The present invention discloses a micro self-generating module with a small stroke and a large power generation capacity, which combines the left and right arrangement of double magnets with the magnetic circuit coordination technology. On the one hand, it can reduce the moving stroke of the self-generating module, making it flatter and more compact, and on the other hand, it can utilize the magnetization effect of the magnet to participate in the magnetic circuit, give full play to the role of the double magnets, increase the magnetic flux density passing through the induction coil, and thus greatly improve the power generation capacity. The micro self-generating module has the advantages of a small moving stroke and a large power generation capacity, and can be widely used in self-generating products such as wireless switches and buttons to improve the pressing touch and signal stability.

[0057] The present invention and its embodiments are schematically described above. The description is not restrictive. Only one of the embodiments of the present invention is shown in the drawings, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A micro self - power generation module with a small stroke and large power generation, comprising a magnetic conduction frame, a coil holder (2), an induction coil (3), a magnetic conduction lever (4), a first permanent magnet (6) and a second permanent magnet (7), characterized in that: Both ends of the magnetic conduction frame respectively have magnetic conduction ports (1b) composed of an upper horizontal plate (1-2) and a lower horizontal plate (1-3). The magnetic conduction ports (1b) at both ends are connected by a magnetic conduction side plate (1-1). The coil holder (2) is arranged between the two magnetic conduction ports (1b). The induction coil (3) is arranged on the coil holder (2). The first permanent magnet (6) is fixed inside one magnetic conduction port (1b), and the second permanent magnet (7) is fixed inside the other magnetic conduction port (1b). The magnetic conduction lever (4) passes through the induction coil (3), and both ends of the magnetic conduction lever (4) are respectively located in or pass through the magnetic conduction ports (1b) at the corresponding ends. The magnetic conduction lever (4) has a first position and a second position that can be switched relative to the first permanent magnet (6) and the second permanent magnet (7): at the first position, one end of the magnetic conduction lever (4) contacts the first permanent magnet (6), and the other end contacts the corresponding horizontal plate that is far from the second permanent magnet (7) and magnetized by the second permanent magnet (7), forming a first magnetic circuit; at the second position, one end of the magnetic conduction lever (4) contacts the second permanent magnet (7), and the other end contacts the corresponding horizontal plate that is far from the first permanent magnet (6) and magnetized by the first permanent magnet (6), forming a second magnetic circuit; the directions of the magnetic induction lines passing through the magnetic conduction lever (4) in the first magnetic circuit and the second magnetic circuit are opposite.

2. The small-stroke and large-power-generation micro self-power generation module according to claim 1, wherein: At the first position, the magnetic pole of the contact end of the first permanent magnet (6) and the magnetic conduction lever (4) is opposite to the magnetic pole polarity of the horizontal plate that is magnetized by the second permanent magnet (7) and contacts the magnetic conduction lever (4); At the second position, the magnetic pole of the contact end of the second permanent magnet (7) and the magnetic conduction lever (4) is opposite to the magnetic pole polarity of the horizontal plate that is magnetized by the first permanent magnet (6) and contacts the magnetic conduction lever (4).

3. The micro self-power generation module with small stroke and large power generation according to claim 1, characterized in that: The magnetic conduction lever (4) switches between the first position and the second position in a swinging manner, and both the first permanent magnet (6) and the second permanent magnet (7) are located on the same side of the magnetic conduction lever (4).

4. The micro self-power generation module with small stroke and large power generation according to claim 3, characterized in that: The magnetic conduction lever (4) passes through the movable channel (2-1) of the coil holder (2). There is a fulcrum (2-1a) for supporting the swinging of the magnetic conduction lever (4) in the movable channel (2-1). The swinging angle α of the magnetic conduction lever (4) is 3° to 6°.

5. The micro self-power generation module with a small stroke and large power generation according to claim 4, characterized in that: The first permanent magnet (6), the second permanent magnet (7), and the horizontal plates corresponding to the two magnetic conduction ports (1b) are all in surface contact with the magnetic conduction lever (4).

6. The micro self - power generation module with small stroke and large power generation according to claim 1, characterized in that: Both ends of the coil holder (2) respectively have extension blocks (2-2) that can extend into the magnetic conduction ports (1b) at the corresponding ends. Magnet mounting grooves (2-3) for positioning the first permanent magnet (6) and the second permanent magnet (7) are provided on the extension blocks (2-2).

7. The micro self - power generation module with a small stroke and large power generation according to any one of claims 1 to 6, characterized in that: The magnetic conduction frame is formed by splicing two magnetic conduction plates (1). Each magnetic conduction plate (1) includes a magnetic conduction side plate (1-1). One end of the magnetic conduction side plate (1-1) has an upper horizontal plate (1-2) and a lower mating socket (1-4), and the other end has a lower horizontal plate (1-3) and an upper mating socket (1-5). The free ends of the upper horizontal plates (1-2) of the two magnetic conduction plates (1) are respectively plugged and connected to the upper mating sockets (1-5) of the corresponding magnetic conduction plates (1), and the free ends of the lower horizontal plates (1-3) of the two magnetic conduction plates (1) are respectively plugged and connected to the lower mating sockets (1-4) of the corresponding magnetic conduction plates (1). The upper horizontal plate (1-2) and the lower horizontal plate (1-3) at the same end form the magnetic conduction port (1b). An intermediate cavity (1a) for accommodating the coil holder (2) is formed between the magnetic conduction side plates (1-1) of the two magnetic conduction plates (1).

8. The micro self-power generation module with small stroke and large power generation according to claim 7, characterized in that: The structures of the two magnetic conduction plates (1) are exactly the same and are made by sheet metal technology.

9. The micro self - power generation module with small stroke and large power generation according to claim 8, characterized in that: At least one end of the magnetic conduction lever (4) passes through the magnetic conduction port (1b) at the corresponding end, and an elastic sheet (5) is provided on the passing end of the magnetic conduction lever (4).

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