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

Abstract

The utility model discloses a small-stroke large-generating-capacity miniature self-generating module, and belongs to the technical field of magnetic generation. The 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, the 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 at 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 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] This utility model relates to an electromagnetic self-generating module, and more specifically, to a micro self-generating module with a small stroke and large power generation. 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.

[0004] Chinese Patent Publication No. CN212909310U discloses "An Independent Dual-Magnet Rocker-Type Micro Power Generation Device and a Wireless Switch Using the Same," with an authorization announcement date of April 6, 2021. Embodiment 1 of the specification describes a micro power generation device with two magnets arranged side-by-side. This side-by-side arrangement of magnets helps reduce the toggle travel. However, the patent application emphasizes the "independent dual-magnet" design, highlighting in paragraph

[0035] that "the first and second soft magnetic frames are arranged facing each other and do not contact each other." The advantage of this arrangement is that the two magnets are independent; during the switching process of the soft magnetic plate, only one magnet participates in the operation at a time, meaning the magnetic circuits are also independent. However, precisely because the magnetic circuits are independent, the two magnets cannot function simultaneously, resulting in a lower magnetic flux density through the coil and a smaller power generation.

[0005] Given the aforementioned shortcomings of existing technologies, it is necessary to design a micro self-generating module with a short stroke and high power generation capacity. Summary of the Invention

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

[0007] The purpose of this invention is to overcome the aforementioned shortcomings of existing self-generating modules and provide a miniature self-generating module with a small stroke and high power output. This invention combines the left-right arrangement of two magnets with magnetic circuit coordination technology. On the one hand, it reduces the tossing stroke of the self-generating module, making it more flat and compact. On the other hand, it utilizes the magnetization effect of the magnets to participate in the magnetic circuit, fully leveraging the role of the two magnets to increase the magnetic flux density through the induction coil, thereby significantly increasing the power output. This miniature self-generating module combines the advantages of a small tossing stroke and high power output, and can be widely used in self-generating products such as wireless switches and buttons to improve tactile feedback and signal stability.

[0008] 2. Technical Solution

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0010] This utility model discloses a small-stroke, high-power micro self-generating module, comprising a magnetic guide frame, a coil holder, an induction coil, a magnetic guide lever, a first permanent magnet, and a second permanent magnet. The magnetic guide frame has magnetic ports at both ends, each consisting of an upper horizontal plate and a lower horizontal plate. The magnetic ports at both ends are connected by magnetic side plates. The coil holder is located between the two magnetic ports. The induction coil is located on the coil holder. The first permanent magnet is fixed inside one magnetic port, and the second permanent magnet is fixed inside the other magnetic port. The magnetic guide lever passes through the induction coil, and both ends of the magnetic guide lever are located at or pass through the corresponding magnetic ports.

[0011] The magnetic guide lever has a switchable first position and a second position relative to the first permanent magnet and the second permanent magnet: in the first position, one end of the magnetic guide lever is in contact with the first permanent magnet, and the other end is in contact with a corresponding horizontal plate that is away from the second permanent magnet and is magnetized by the second permanent magnet, forming a first magnetic circuit; in the second position, one end of the magnetic guide lever is in contact with the second permanent magnet, and the other end is in contact with a corresponding horizontal plate that is away from the first permanent magnet and is magnetized by the first permanent magnet, forming a second magnetic circuit; the magnetic field lines passing through the magnetic guide lever in the first magnetic circuit and the second magnetic circuit are in opposite directions.

[0012] Furthermore, at the first position, the magnetic poles of the first permanent magnet at the contact end with the magnetic guide lever are opposite in polarity to the magnetic poles of the horizontal plate that is magnetized by the second permanent magnet and in contact with the magnetic guide lever.

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

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

[0015] Furthermore, the magnetic guide rod passes through the movable channel of the coil holder, and the movable channel has a fulcrum for supporting the swing of the magnetic guide rod, and the swing angle α of the magnetic guide rod is 3° to 6°.

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

[0017] Furthermore, each end of the coil holder has an extension block that can extend into the corresponding magnetic port, and the extension block has a magnet mounting groove for positioning the first permanent magnet and the second permanent magnet.

[0018] Furthermore, the magnetic guide frame is composed of two magnetic guide plates spliced ​​together. Each magnetic guide plate includes a magnetic guide side plate. One end of the magnetic guide side plate has an upper horizontal plate and a lower pair of insertion slots, and the other end has a lower horizontal plate and an upper pair of insertion slots. The free ends of the upper horizontal plates of the two magnetic guide plates are inserted into the upper pair of insertion slots of the corresponding magnetic guide plates, and the free ends of the lower horizontal plates of the two magnetic guide plates are inserted into the lower pair of insertion slots of the corresponding magnetic guide plates. The upper and lower horizontal plates located at the same end form the magnetic guide port, and an intermediate cavity for accommodating the coil holder is formed between the magnetic guide side plates of the two magnetic guide plates.

[0019] Furthermore, the two magnetic conductive plates have identical structures and are manufactured using sheet metal processing.

[0020] Furthermore, at least one end of the magnetic guide lever extends through the corresponding magnetic port, and a spring is provided on the extending end of the magnetic guide lever.

[0021] 3. Beneficial effects

[0022] Compared with existing known technologies, the technical solution provided by this utility model has the following significant advantages:

[0023] (1) A micro self-generating module with a small stroke and large power generation according to this utility model includes a magnetic guide frame, a coil retainer, an induction coil, a magnetic guide lever, a first permanent magnet, and a second permanent magnet. The magnetic guide frame has magnetic ports at both ends, each consisting of an upper horizontal plate and a lower horizontal plate. The magnetic ports at both ends are connected by magnetic side plates. The magnetic guide lever passes through the induction coil, and both ends of the magnetic guide lever are located at or pass through the corresponding magnetic ports. The magnetic guide lever has a switchable first position and a second position relative to the first permanent magnet and the second permanent magnet. At the first position and the second position, one end of the magnetic guide lever can be switched with the corresponding end. One end contacts a permanent magnet, and the other end contacts a corresponding horizontal plate magnetized by the permanent magnet, forming a magnetic circuit involving two magnets. This miniature self-generating module combines the left-right arrangement of two magnets with magnetic circuit coordination technology. On the one hand, it can reduce the toggle stroke of the self-generating module, making it more flat and compact. On the other hand, it can utilize the magnetization effect of the magnets to participate in the magnetic circuit, giving full play to the role of the two magnets, increasing the magnetic flux density through the induction coil, and thus greatly increasing the power generation. It has the advantages of small toggle stroke and large power generation, and can be widely used in self-generating products such as wireless switches and buttons to improve the pressing feel and signal stability.

[0024] (2) The present invention provides a small-stroke, high-power micro self-generating module, wherein the magnetic guide lever switches between the first and second positions by swinging. The first permanent magnet and the second permanent magnet are both located on the same side of the magnetic guide lever. The structure is simple, easy to manufacture, and the lever is flexible and stable.

[0025] (3) The present invention provides a small-stroke, high-power micro self-generating module, wherein the magnetic guide rod is inserted in the movable channel of the coil holder. The movable channel has a fulcrum for supporting the swing of the magnetic guide rod. The swing angle α of the magnetic guide rod is 3° to 6°. Compared with the existing magnet-opposite structure, the swing angle of the magnetic guide rod is smaller and the stroke is smaller.

[0026] (4) The micro self-generating module with small stroke and large power generation of this utility model has a first permanent magnet, a second permanent magnet and a horizontal plate corresponding to two magnetic ports, which are in surface contact with the magnetic guide rod. The magnetic circuit contact surface is larger, which ensures the magnetic flux density passing through the magnetic guide rod, thereby ensuring the power generation of the micro self-generating module.

[0027] (5) The present invention provides a small-stroke, high-power micro self-generating module, wherein the two ends of the coil holder have extension blocks that can be inserted into the magnetic ports of the corresponding ends. The extension blocks have magnet mounting slots 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 holder, but also facilitate the positioning and installation of the permanent magnet, thereby improving the structural stability of the micro self-generating module.

[0028] (6) The present invention provides a small-stroke, high-power micro self-generating module, whose magnetic frame is composed of two magnetic plates spliced ​​together. Each magnetic plate includes a magnetic side plate. One end of the magnetic side plate has an upper horizontal plate and a lower pair of sockets, and the other end has a lower horizontal plate and an upper pair of sockets, which facilitates the assembly and manufacturing of the entire self-generating module.

[0029] (7) The present invention provides a small-stroke, high-power micro self-generating module with two magnetic plates having the same structure and made by sheet metal process. Only one type of magnetic plate needs to be made during manufacturing, which is simple and convenient to manufacture, has lower manufacturing cost, and is conducive to standardized mass production. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a micro self-generating module with a small stroke and large power generation capacity according to the present invention.

[0031] Figure 2 This is a three-dimensional structural diagram of a micro self-generating module with a small stroke and large power generation capacity according to this utility model from another angle;

[0032] Figure 3 This is a schematic diagram showing the disassembled structure of a micro self-generating module with a small stroke and large power generation capacity according to the present invention.

[0033] Figure 4 This is a top view schematic diagram of a micro self-generating module with a small stroke and large power generation capacity according to the present invention.

[0034] Figure 5 for Figure 4 A cross-sectional view of the structure along the AA direction (with the magnetic lever in the first position).

[0035] Figure 6 for Figure 4 A cross-sectional view of the structure along the AA direction (with the magnetic lever in the second position);

[0036] Figure 7 This is a schematic diagram of the assembled state of the magnetic guide frame in this utility model;

[0037] Figure 8 This is a three-dimensional structural diagram of a single magnetic plate in this utility model.

[0038] Figure 9 for Figure 8 A side view of the central magnetic plate.

[0039] Figure 10 This is a schematic diagram of the two magnetic plates flipped and interlocked in this utility model;

[0040] Figure 11 This is a schematic diagram of the coil cage structure in this utility model.

[0041] Explanation of the labels in the diagram:

[0042] 1. Magnetic plate; 1a. Intermediate cavity; 1b. Magnetic port; 1-1. Magnetic side plate; 1-2. Upper horizontal plate; 1-3. Lower horizontal plate; 1-4. Lower insertion port; 1-5. Upper insertion port; 2. Coil retainer; 2-1. Movable channel; 2-1a. Pivot point; 2-2. Extension block; 2-3. Magnet mounting slot; 3. Induction coil; 4. Magnetic lever; 5. Spring; 6. First permanent magnet; 7. Second permanent magnet. Detailed Implementation

[0043] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0044] [Example 1]

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

[0046] To further understand the above magnetic circuit relationships, combined with Figure 5 and Figure 6 The magnetic circuit of the magnetic guide lever 4 when it is in the first and second positions is further explained:

[0047] like Figure 5 As shown, when the magnetic guide lever 4 is in the first position, one end of the magnetic guide lever 4 is in contact with the N pole of the first permanent magnet 6, and the other end of the magnetic guide lever 4 is in contact with the corresponding horizontal plate (lower horizontal plate 1-3) of the corresponding magnetic guide port 1b. The magnetic field lines of the first permanent magnet 6 return to the S pole of the first permanent magnet 6 through the magnetic guide lever 4, the lower horizontal plate 1-3 on the left, the magnetic side plate 1-1, and the upper horizontal plate 1-2 on the right. At the same time, the second permanent magnet 7 magnetizes the lower horizontal plate 1-3 on the left into an S pole, participating in the magnetic circuit and increasing the magnetic flux density passing through the magnetic guide lever 4. Similarly, as Figure 6 As shown, when the magnetic guide lever 4 is in the second position, one end of the magnetic guide lever 4 is in contact with the N pole of the second permanent magnet 7, and the other end of the magnetic guide lever 4 is in contact with the corresponding horizontal plate (lower horizontal plate 1-3) of the corresponding magnetic guide port 1b. The magnetic field lines of the second permanent magnet 7 return to the S pole of the second permanent magnet 7 through the magnetic guide lever 4, the lower horizontal plate 1-3 on the right, the magnetic side plate 1-1, and the upper horizontal plate 1-2 on the left. At the same time, the first permanent magnet 6 magnetizes the lower horizontal plate 1-3 on the right as the S pole, participating in the magnetic circuit and increasing the magnetic flux density passing through the magnetic guide lever 4. When the magnetic guide lever 4 quickly switches between the first and second positions, the direction of the magnetic flux in the magnetic guide lever 4 changes, thereby generating an induced current in the induction coil 3.

[0048] As can be seen, the aforementioned micro self-generating module combines the left-right arrangement of dual magnets with magnetic circuit coordination technology. On the one hand, it can reduce the tossing stroke of the self-generating module, making it more flat and compact. On the other hand, it can utilize the magnetization effect of the magnets to participate in the magnetic circuit, fully utilize the role of the dual magnets, increase the magnetic flux density through the induction coil, and thus greatly increase the power generation.

[0049] catch Figure 5 and Figure 6As shown, in this embodiment, the magnetic guide lever 4 switches between a first position and a second position by swinging, with the first permanent magnet 6 and the second permanent magnet 7 both located on the same side of the magnetic guide lever 4. Thus, the magnetic guide lever 4 swings around its central part, changing the contact state between the magnetic guide lever 4 and the two permanent magnets. Using the swinging method of the magnetic guide lever 4 results in a simple structure, easy manufacturing, and flexible and stable operation. Specifically, the magnetic guide lever 4 passes through the movable channel 2-1 of the coil retainer 2. The movable channel 2-1 has a fulcrum 2-1a for supporting the swinging of the magnetic guide lever 4. The central part of the magnetic guide lever 4 is supported on the fulcrum 2-1a to achieve its free swinging. In this embodiment, the swing angle α of the magnetic guide lever 4 is preferably 3° to 6°, and 4° to 5° is more preferable. Compared with the existing magnet-opposite structure, the swing angle of the magnetic guide lever is smaller, and the stroke is shorter. Furthermore, the first permanent magnet 6, the second permanent magnet 7, and the horizontal plates corresponding to the two magnetic ports 1b all make surface contact with the magnetic guide rod 4, resulting in a larger magnetic circuit contact surface. This ensures the magnetic flux density passing through the magnetic guide rod 4, thereby guaranteeing the power generation of the micro self-generating module. In this embodiment, since the magnetic guide rod 4 tilts due to its swing, the upper horizontal plate 1-2 and the lower horizontal plate 1-3 at both ends of the magnetic ports 1b can be provided with a certain slope to facilitate surface contact. (Refer to...) Figure 9 As shown, the upper horizontal plate 1-2 and the lower horizontal plate 1-3 may be inclined at an angle β with respect to the horizontal plane. The inclined angle β is half of the swing angle α mentioned above.

[0050] Specific reference Figure 3 and Figure 11 As shown, in this embodiment, the coil holder 2 has extension blocks 2-2 at both ends that can extend into the corresponding magnetic ports 1b. The extension blocks 2-2 have magnet mounting slots 2-3 for positioning the first permanent magnet 6 and the second permanent magnet 7. The extension blocks 2-2 not only facilitate the connection and fixation of the coil holder 2 and the magnetic holder, but also facilitate the positioning and installation of the permanent magnets, thereby improving the structural stability of the micro self-generating module.

[0051] [Example 2]

[0052] This embodiment of a micro self-generating module with a short stroke and high power output has the same basic structure and working principle as Embodiment 1, but the difference is:

[0053] like Figure 3 , Figures 7 to 9As shown, in this embodiment, the magnetic guide frame is formed by splicing two magnetic guide plates 1. Each magnetic guide plate 1 includes a magnetic guide side plate 1-1. One end of the magnetic guide side plate 1-1 has an upper horizontal plate 1-2 and a lower insertion port 1-4, and the other end has a lower horizontal plate 1-3 and an upper insertion port 1-5. The free ends of the upper horizontal plates 1-2 of the two magnetic guide plates 1 are inserted into the upper insertion ports 1-5 of the corresponding magnetic guide plate 1, and the free ends of the lower horizontal plates 1-3 of the two magnetic guide plates 1 are inserted into the lower insertion ports 1-4 of the corresponding magnetic guide plate 1. The upper horizontal plates 1-2 and lower horizontal plates 1-3 located at the same end form a magnetic guide port 1b, and an intermediate cavity 1a for accommodating the coil holder 2 is formed between the magnetic guide side plates 1-1 of the two magnetic guide plates 1. Using two magnetic guide plates 1 spliced ​​together to form the magnetic guide frame facilitates the assembly and manufacturing of the entire self-generating module. During assembly, the induction coil 3 can be pre-wound onto 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 plates 1, the two magnetic plates 1 can be spliced ​​and assembled, and finally the magnetic lever 4 can be installed.

[0054] Specifically, in this embodiment, the two magnetic plates 1 have identical structures and are manufactured using sheet metal processing. (Refer to...) Figure 10 As shown, rotating one magnetic plate 1 180° horizontally relative to another magnetic plate 1 allows for the interlocking connection of the two magnetic plates 1, forming a complete magnetic frame. Only one type of magnetic plate 1 needs to be manufactured, making production simple, convenient, and cost-effective, thus facilitating standardized mass production.

[0055] In addition, similar to existing self-generating modules, at least one end of the magnetic guide rod 4 extends through the corresponding magnetic port 1b, and a spring piece 5 is provided on the extending end of the magnetic guide rod 4. The spring piece 5 provides the magnetic guide rod 4 with a toggle rebound, which enables the magnetic guide rod 4 to switch movements quickly, ensuring power generation efficiency and power output.

[0056] This invention relates to a miniature self-generating module with a small stroke and high power output. It combines the arrangement of two magnets on the left and right with magnetic circuit coordination technology. On the one hand, it can reduce the tossing stroke of the self-generating module, making it more flat and compact. On the other hand, it can utilize the magnetization effect of the magnets to participate in the magnetic circuit, giving full play to the role of the two magnets and increasing the magnetic flux density through the induction coil, thereby greatly increasing the power output. This miniature self-generating module has the advantages of small tossing stroke and high power output, and can be widely used in self-generating products such as wireless switches and buttons to improve the pressing feel and signal stability.

[0057] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A micro self-generating module with a small stroke and large power output, comprising a magnetic guide frame, a coil holder (2), an induction coil (3), a magnetic guide lever (4), a first permanent magnet (6), and a second permanent magnet (7), characterized in that: The magnetic guide frame has magnetic guide ports (1b) at both ends, each consisting of an upper horizontal plate (1-2) and a lower horizontal plate (1-3). The magnetic guide ports (1b) at both ends are connected by magnetic guide side plates (1-1). The coil holder (2) is located between the two magnetic guide ports (1b). The induction coil (3) is located on the coil holder (2). The first permanent magnet (6) is fixed inside one magnetic guide port (1b). The second permanent magnet (7) is fixed inside the other magnetic guide port (1b). The magnetic guide lever (4) passes through the induction coil (3), and the two ends of the magnetic guide lever (4) are located at or pass through the corresponding magnetic guide ports (1b). The magnetic guide 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): In the first position, one end of the magnetic guide lever (4) is in contact with the first permanent magnet (6), and the other end is in contact with a corresponding horizontal plate that is away from the second permanent magnet (7) and is magnetized by the second permanent magnet (7), forming a first magnetic circuit; In the second position, one end of the magnetic guide lever (4) is in contact with the second permanent magnet (7), and the other end is in contact with a corresponding horizontal plate that is away from the first permanent magnet (6) and is magnetized by the first permanent magnet (6), forming a second magnetic circuit; The magnetic field lines passing through the magnetic guide lever (4) in the first magnetic circuit and the second magnetic circuit are in opposite directions.

2. The micro self-generating module with a short stroke and high power generation capacity according to claim 1, characterized in that: At the first position, the magnetic pole of the first permanent magnet (6) in contact with the magnetic guide rod (4) is opposite to the magnetic pole of the horizontal plate that is magnetized by the second permanent magnet (7) and in contact with the magnetic guide rod (4); At the second position, the magnetic poles of the second permanent magnet (7) at the contact end with the magnetic guide rod (4) are opposite in polarity to the magnetic poles of the horizontal plate that is magnetized by the first permanent magnet (6) and in contact with the magnetic guide rod (4).

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

4. The micro self-generating module with a short stroke and high power generation capacity according to claim 3, characterized in that: The magnetic guide rod (4) is inserted into the movable channel (2-1) of the coil holder (2). The movable channel (2-1) has a fulcrum (2-1a) for supporting the swing of the magnetic guide rod (4). The swing angle α of the magnetic guide rod (4) is 3° to 6°.

5. The micro self-generating module with a short stroke and high power generation capacity 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 ports (1b) all make surface contact with the magnetic lever (4).

6. The micro self-generating module with a short stroke and high power output according to claim 1, characterized in that: The coil holder (2) has extension blocks (2-2) at both ends that can extend into the corresponding magnetic ports (1b). The extension blocks (2-2) have magnet mounting slots (2-3) for positioning the first permanent magnet (6) and the second permanent magnet (7).

7. The micro self-generating module with a small stroke and large power generation capacity according to any one of claims 1 to 6, characterized in that: The magnetic guide frame is composed of two magnetic guide plates (1) spliced ​​together. Each magnetic guide plate (1) includes a magnetic guide side plate (1-1). One end of the magnetic guide 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 guide plates (1) are connected to the upper pair of sockets (1-5) of the corresponding magnetic guide plate (1). The free ends of the lower horizontal plates (1-3) of the two magnetic guide plates (1) are connected to the lower pair of sockets (1-4) of the corresponding magnetic guide plate (1). The upper horizontal plates (1-2) and the lower horizontal plates (1-3) located at the same end form the magnetic guide port (1b). An intermediate cavity (1a) for accommodating the coil holder (2) is formed between the magnetic guide side plates (1-1) of the two magnetic guide plates (1).

8. The micro self-generating module with a short stroke and high power output according to claim 7, characterized in that: The two magnetic plates (1) have the same structure and are made using sheet metal processing.

9. The micro self-generating module with a short stroke and high power output according to claim 8, characterized in that: At least one end of the magnetic guide rod (4) extends through the corresponding magnetic port (1b), and a spring piece (5) is provided on the extending end of the magnetic guide rod (4).

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