Micro generator

Abstract

A micro generator, comprising supports (1), coils (2), a first magnetic conductive plate (3), a second magnetic conductive plate (4), and a permanent magnet (6), the coils (2) being wound on the supports (1). The first magnetic conductive plate (3) comprises a first planar portion (31) and a first bent portion; and the second magnetic conductive plate (4) comprises a second planar portion (41) and a second bent portion. The permanent magnet (6) is arranged at the supports (1) at one end; one end of each support (1) is provided with a first slot and a second slot on up and down; a second flange (35) is inserted into the first slots to be fixed at the tops of the supports; the second flange (35) abuts against the top of the permanent magnet (6) to realize magnetic conduction; a fourth flange (45) is inserted into the second slots to be fixed at the bottoms of the supports (1); and the fourth flange (45) abuts against the bottom of the permanent magnet (6) to realize magnetic conduction. Therefore, by means of providing the first bent portion and the second bent portion, additional magnetic conductive gaskets and clamping pieces are omitted, thereby simplifying the production process and reducing the manufacturing cost; and additionally, the magnetic field direction being affected by clamping pieces and magnetic conductive gaskets to change can also be prevented, thereby ensuring the power generation efficiency and significantly improving the user experience.

Description

A miniature power generation device Technical Field

[0001] This utility model relates to the field of micro-electric power generation technology, specifically to a micro-electric power generation device. Background Technology

[0002] Existing micro-power generation devices provide an alternative for small, low-power electronic products by utilizing the pressing force of a hand or minor external mechanical pressure. These products include two magnets, two magnetic plates, a bracket, a coil wound on the bracket, and a magnetic plate located at the center of the bracket. The two magnets are mounted at both ends of the bracket and on both sides of the coil, and the two magnetic plates are located on the top and bottom sides of the bracket. Technical issues

[0003] However, in practical applications, it has been found that the magnetic plate is usually flat. When the permanent magnet is installed on the bracket, there is a large gap between the permanent magnet and the magnetic plate. It is necessary to add a magnetic pad to fill the gap so that the magnetic plate and the permanent magnet can conduct magnetism. Secondly, the presence of the magnetic pad will occupy most of the space on the bracket, so that the magnetic plate cannot be directly fixed to the bracket. Therefore, additional clamps are required to clamp the magnetic plate to fix it to the bracket, which increases the complexity of the structure. At the same time, the clamps also increase the thickness, resulting in a larger volume, making it inconvenient to combine and use, resulting in low flexibility. Furthermore, the presence of the clamps and magnetic pads may also affect the change of the magnetic field direction of the magnetic plate, thereby affecting the power generation efficiency. Technical solutions

[0004] To overcome the shortcomings of the prior art, this utility model provides a miniature power generation device. By setting a first bending part and a second bending part, it avoids the need to add additional shims to fill the gaps between the permanent magnet and the first and second magnetic conductive plates. It also eliminates the need for additional clamps, reducing the product size and facilitating combined use. This simplifies the production process and reduces manufacturing costs. In addition, it avoids the influence of clamps and magnetic shims on the change of magnetic field direction, ensuring power generation efficiency and significantly improving the user experience.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A miniature power generation device, comprising:

[0007] A bracket and a coil, wherein the coil is wound on the bracket;

[0008] The first magnetic plate includes a first flat portion and a first bent portion disposed at one end of the first flat portion; the first bent portion includes a first flange connected to one end of the first flat portion and arranged vertically, and a second flange arranged horizontally and located at the bottom of the first flange.

[0009] The second magnetic plate includes a second flat portion and a second bent portion disposed at one end of the second flat portion; the second bent portion includes a third flange connected to one end of the second flat portion and arranged vertically, and a fourth flange arranged horizontally and located at the bottom of the third flange.

[0010] A permanent magnet is disposed at one end of the support;

[0011] The bracket has a first slot and a second slot at one end. The second flange is inserted into the first slot to fix the top of the bracket, and the second flange abuts against the top of the permanent magnet to conduct magnetism. The fourth flange is inserted into the second slot to fix the bottom of the bracket, and the fourth flange abuts against the bottom of the permanent magnet to conduct magnetism.

[0012] Furthermore, the other end of the bracket is provided with a first buckle and a second buckle. The first magnetic plate is provided with a first slot that cooperates with the first buckle, and the second magnetic plate is provided with a second slot that cooperates with the second buckle. The first slot engages with the first buckle, and the second slot engages with the second buckle so that the first magnetic plate and the second magnetic plate are respectively fixed on the upper and lower sides of the bracket.

[0013] Furthermore, the top of the other end of the bracket is provided with a first fastening position and a second fastening position, and the middle of the other end of the bracket is provided with a first clamping block and a second clamping block. There is a first gap between the first clamping block and the first fastening position, and there is a second gap between the second clamping block and the second fastening position. The first gap and the second gap form the first slot.

[0014] The bottom of the other end of the bracket is provided with a third fastening position and a fourth fastening position. There is a third gap between the first clamping block and the third fastening position, and a fourth gap between the second clamping block and the fourth fastening position. The third gap and the fourth gap form the first slot.

[0015] Furthermore, a first limiting block and a second limiting block are provided at the front and rear of the middle part of the other end of the bracket. The first limiting block, the second limiting block, the second clamping block and the first clamping block form an installation groove. The permanent magnet is installed in the installation groove, and the first clamping block and the second clamping block are respectively clamped on both sides of the permanent magnet.

[0016] Furthermore, it also includes a magnetically conductive swing plate. The bracket has a cavity with open ends. The upper and lower walls of the cavity are provided with two fulcrums for swinging, and the two fulcrums are vertically aligned. The magnetically conductive swing plate is disposed in the cavity and located between the two fulcrums. The magnetically conductive swing plate can swing up and down in the cavity.

[0017] Furthermore, the first magnetic plate also includes a fifth flange that is folded downward at the other end of the first flat portion; the second magnetic plate also includes a sixth flange that is folded downward at the other end of the second flat portion.

[0018] When the magnetically conductive swing plate swings up and down in the cavity, the magnetically conductive swing plate abuts against the fifth flange and the fourth flange to achieve magnetic conduction, or the magnetically conductive swing plate abuts against the sixth flange and the second flange to achieve magnetic conduction.

[0019] Furthermore, it also includes a spring piece disposed at one end of the magnetically conductive swing plate, which can drive the magnetically conductive swing plate to swing up and down in the cavity when the spring piece moves.

[0020] Furthermore, a first connecting hole is provided at one end of the magnetically conductive swing plate, and a second connecting hole is provided on the spring piece. The spring piece is fixed to one end of the magnetically conductive swing plate by fasteners passing through the first connecting hole and the second connecting hole.

[0021] Furthermore, it also includes a torsion spring for providing an upward restoring force to the spring, the torsion spring abutting against the spring.

[0022] Furthermore, the first flange and the first flat portion, the second flange and the first flange, and the fifth flange and the first flat portion all adopt rounded corner transitions;

[0023] The third flange and the second flat portion, the fourth flange and the third flange, and the sixth flange and the second flat portion all use rounded corner transitions. Beneficial effects

[0024] In summary, the micro power generation device of this utility model, by setting the first bending part and the second bending part, avoids the need to add additional shims to fill the gap between the permanent magnet and the first and second magnetic conductive plates. At the same time, it also eliminates the need for additional clamps, reduces the product size, and facilitates combination and use, thereby simplifying the production process and reducing manufacturing costs. In addition, it can also avoid the influence of clamps and magnetic conductive shims on the change of magnetic field direction, ensuring power generation efficiency and significantly improving the user experience.

[0025] In this micro-power generation device, the first magnetic plate is fixed to the top of the bracket by engaging with the first buckle through the first slot; the second magnetic plate is fixed to the bottom of the bracket by engaging with the second buckle through the second slot. This improves the firmness of the connection between the first and second magnetic plates and the bracket, while also eliminating the need for additional magnetic pads and clips, reducing the size, avoiding the influence of clips and magnetic pads on the direction of magnetic field changes, and ensuring power generation efficiency. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of the micro power generation device of this utility model;

[0027] Figure 2 is a schematic diagram of the decomposition of Figure 1;

[0028] Figure 3 is a cross-sectional schematic diagram of the magnetically guided swing plate in state one in Figure 1;

[0029] Figure 4 is a cross-sectional schematic diagram of the magnetically guided swing plate in state two in Figure 1;

[0030] Figure 5 is a schematic diagram of the support and coil in the micro power generation device of this utility model;

[0031] Figure 6 is a structural schematic diagram of the support and coil in the micro power generation device of this utility model from another perspective;

[0032] Figure 7 is a schematic diagram of the structure of the first magnetic plate in the micro power generation device of this utility model;

[0033] Figure 8 is a schematic diagram of the structure of the second magnetic plate in the micro power generation device of this utility model;

[0034] Figure 9 is a schematic diagram of the torsion spring in the micro power generation device of this utility model.

[0035] The meanings of the reference numerals in the attached figures are as follows:

[0036] 1. Bracket; 11. Cavity; 111. Fulcrum; 12. First buckle; 121. Second buckle; 13. First limiting block; 131. Second limiting block; 14. First clamping block; 141. Second clamping block; 15. First latching position; 151. Second latching position; 152. First gap; 153. Second gap; 16. Third latching position; 161. Fourth latching position; 162. Third gap; 163. Fourth gap; 17. Boss; 18. First positioning protrusion; 181. Second positioning protrusion; 2. Coil; 3. First magnetic plate; 31. First flat part; 32. First slot 33. Fifth flange; 34. First flange; 35. Second flange; 36. First clearance groove; 37. Second clearance groove; 4. Second magnetic plate; 41. Second flat part; 42. Second slot; 43. Sixth flange; 44. Third flange; 45. Fourth flange; 46. Third clearance groove; 47. Fourth clearance groove; 5. Magnetic swing plate; 51. First connecting hole; 52. Protrusion; 6. Permanent magnet; 7. Spring piece; 71. Second connecting hole; 8. Fastener; 9. Support; 91. Protrusion; 92. Torsion spring; 921. Torsion spring body; 922. Torsion arm; 93. Side edge. Embodiments of the present invention

[0037] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0040] As shown in Figures 1-9, a miniature power generation device includes a support 1, a coil 2, a first magnetic plate 3, a second magnetic plate 4, and a permanent magnet 6; the coil 2 is wound around the support 1; the first magnetic plate 3 includes a first flat portion 31 and a first bent portion disposed at one end of the first flat portion 31; the first bent portion includes a first flange 34 connected to one end of the first flat portion 31 and arranged vertically, and a second flange 35 arranged horizontally and located at the bottom of the first flange 34; the second magnetic plate 4 includes a second flat portion 41 and a second bent portion disposed at one end of the second flat portion 41; the first... The double-bend portion includes a third flange 44 connected to one end of the second flat portion 41 and arranged vertically, and a fourth flange 45 arranged horizontally and located at the bottom of the third flange 44; the permanent magnet 6 is disposed at one end of the bracket 1; wherein, a first slot and a second slot are provided at the top and bottom of one end of the bracket 1, the second flange 35 is inserted into the first slot to be fixed to the top of the bracket 1, and the second flange 35 abuts against the top of the permanent magnet 6 to achieve magnetic conduction; the fourth flange 45 is inserted into the second slot to be fixed to the bottom of the bracket 1, and the fourth flange 45 abuts against the bottom of the permanent magnet 6 to achieve magnetic conduction.

[0041] Based on the above structure, the first magnetic plate 3 is provided with a first bending portion, which includes a first flange 34 and a second flange 35. The second flange 35 is inserted into the first slot to fix the first magnetic plate 3 to the top of the bracket 1, and the second flange 35 abuts against the top of the permanent magnet 6 to achieve magnetic conduction. The second magnetic plate 4 is provided with a second bending portion, which includes a third flange 44 and a fourth flange 45. The fourth flange 45 is inserted into the second slot to fix the second magnetic plate 4 to the bottom of the bracket 1, and the fourth flange 45 abuts against the bottom of the permanent magnet 6 to achieve magnetic conduction. The additional magnetic guide pads were removed; by setting the first and second bends, the space utilization on the bracket 1 was improved, so that the bracket 1 can have the first and second slots, which makes it easy for the first magnetic guide plate 3 and the second magnetic guide plate 4 to be directly inserted and fixed on the bracket 1 and abut against the permanent magnet 6 to achieve magnetic conduction. The additional magnetic guide pads and fixing clips are eliminated, the product size is reduced, and it is easy to combine and use, thereby simplifying the production process and reducing manufacturing costs. At the same time, it also avoids the clips and magnetic guide pads from affecting the change of magnetic field direction, ensuring power generation efficiency and significantly improving the user experience.

[0042] Furthermore, the other end of the bracket 1 is provided with a first buckle 12 and a second buckle 121. The first magnetic plate 3 has a first slot 32 that cooperates with the first buckle 12, and the second magnetic plate 4 has a second slot 42 that cooperates with the second buckle 121. The first slot 32 engages with the first buckle 12, and the second slot 42 engages with the second buckle 121, so that the first magnetic plate 3 and the second magnetic plate 4 are respectively fixed on the upper and lower sides of the bracket 1, which improves the firmness of the connection between the first magnetic plate 3, the second magnetic plate 4 and the bracket 1, and also eliminates the need for additional magnetic pads and clips, reducing the product size.

[0043] Referring to Figures 5-6, the top of the other end of the bracket 1 is provided with a first fastening position 15 and a second fastening position 151 at the front and back. The middle of the other end of the bracket 1 is provided with a first clamping block 14 and a second clamping block 141 at the front and back. There is a first gap 152 between the first clamping block 14 and the first fastening position 15, and a second gap 153 between the second clamping block 141 and the second fastening position 151. The first gap 152 and the second gap 153 form a first slot. The bottom of the other end of the bracket 1 is provided with a third fastening position 16 and a fourth fastening position 161 at the front and back. There is a third gap 162 between the first clamping block 14 and the third fastening position 16, and a fourth gap 163 between the second clamping block 141 and the fourth fastening position 161. The third gap 162 and the fourth gap 163 form a second slot.

[0044] Specifically, the other end of the bracket 1 has protrusions 17 at both the front and rear of its bottom, and the right end of the first magnetic plate 3 also has a first clearance groove 36 and a second clearance groove 37 for abutting against the protrusions 17, so that the second flange 35 of the first magnetic plate 3 is more firmly inserted into the first gap 152 and the second gap 153; the right end of the second magnetic plate 4 also has a third clearance groove 46 and a fourth clearance groove 47 for abutting against the protrusions 17, so that the fourth flange 45 of the second magnetic plate 4 is inserted into the third gap 162 and the second gap 153. The first magnetic plate 3 is more secure when installed within the fourth gap 163. During installation, the first magnetic plate 3 is engaged with the first buckle 12 on the bracket 1 via the first slot 32, and then inserted into the first gap 152 and the second gap 153 at the other end of the bracket 1 via the second flange 35, so as to fix it to the top of the bracket 1. The second magnetic plate 4 is engaged with the second buckle 121 on the bracket 1 via the second slot 42, and then inserted into the third gap 162 and the fourth gap 163 at the other end of the bracket 1 via the fourth flange 45, so as to fix it to the bottom of the bracket 1.

[0045] It should be noted that the first magnetic plate 3 and the second magnetic plate 4 have the same structure, as shown in Figures 7-8. At the same time, the upper and lower structures of the bracket 1 are symmetrical. When the first magnetic plate 3 and the second magnetic plate 4 are installed at the top and bottom of the bracket 1 respectively, they are arranged symmetrically on the upper and lower sides of the bracket 1.

[0046] Specifically, the other end of the bracket 1 is provided with a first limiting block 13 and a second limiting block 131 at the front and rear of the middle part. The first limiting block 13, the second limiting block 131, the second clamping block 141 and the first clamping block 14 form an installation groove. The permanent magnet 6 is installed in the installation groove, and the first clamping block 14 and the second clamping block 141 are respectively clamped on both sides of the permanent magnet 6.

[0047] Furthermore, the micro power generation device of this utility model also includes a magnetically conductive swing plate 5. The support 1 has a cavity 11 with open ends. The upper and lower walls of the cavity 11 are provided with two fulcrums 111 for swinging, and the two fulcrums 111 correspond to each other vertically. The magnetically conductive swing plate 5 is disposed in the cavity 11 and located between the two fulcrums 111. The magnetically conductive swing plate 5 can swing up and down in the cavity 11.

[0048] Specifically, the first magnetic plate 3 further includes a fifth flange 33 folded downward at the other end of the first flat portion 31; the second magnetic plate 4 further includes a sixth flange 43 folded downward at the other end of the second flat portion 41; when the magnetic swing plate 5 swings up and down in the cavity 11, the magnetic swing plate 5 abuts against the fifth flange 33 and the fourth flange 45 to achieve magnetic conduction, or the magnetic swing plate 5 abuts against the sixth flange 43 and the second flange 35 to achieve magnetic conduction.

[0049] It should be noted that in this embodiment, only one permanent magnet 6 is provided. The volume of the permanent magnet 6 is sufficient to provide magnetic force for the device, ensuring that the change in magnetic field when the magnetically guided swing plate 5 swings, and the power generated by the coil 2 inducing the change in magnetic field, will not affect the power supply during its use. At the same time, providing only one permanent magnet 6 also shortens the length of the power generation device, further reducing the volume of the power generation device, making it easier to install in micro electronic products and provide them with power.

[0050] Referring to Figure 2, the micro power generation device of this utility model also includes a spring piece 7 disposed at one end of the magnetically conductive swing plate 5. When the spring piece 7 moves, it can drive the magnetically conductive swing plate 5 to swing up and down in the cavity 11, so that the magnetically conductive swing plate 5 abuts against the fifth flange 33 and the fourth flange 45 to achieve magnetic conduction; or the magnetically conductive swing plate 5 abuts against the sixth flange 43 and the second flange 35 to achieve magnetic conduction. As a result, the magnetic force on the magnetically conductive swing plate 5 changes, that is, the magnetic field changes. The coil 2 senses the change in its magnetic field and generates electricity, and provides the power supply required for low-power electronic devices.

[0051] Furthermore, one end of the magnetically conductive swing plate 5 is provided with a first connecting hole 51, and the spring piece 7 is provided with a second connecting hole 71. The spring piece 7 is fixed to one end of the magnetically conductive swing plate 5 by fasteners 8 passing through the first connecting hole 51 and the second connecting hole 71. One end of the magnetically conductive swing plate 5 is provided with a protrusion 52, and two first connecting holes 51 are provided, respectively arranged on both sides of the protrusion 52.

[0052] It should be noted that, in this embodiment, the first connecting hole 51 and the second connecting hole 71 can be screw holes, and the fastener 8 can be a screw that passes through the first connecting hole 51 and the second connecting hole 71 and is fastened to fix the spring piece 7 on the protrusion 52 at one end of the magnetically conductive swing plate 5. Alternatively, the first connecting hole 51 and the second connecting hole 71 can be through holes, and the fastener 8 can be a rivet that passes through the first connecting hole 51 and the second connecting hole 71 and is riveted to fix the spring piece 7 on the protrusion 52 at one end of the magnetically conductive swing plate 5. No specific limitation is made here.

[0053] Referring to Figure 9, the micro power generation device of this utility model also includes a torsion spring 92 for providing an upward reset force for the spring piece 7, and the torsion spring 92 abuts against the spring piece 7. Specifically, in this embodiment, it also includes a support 9 connected to the bracket 1. The support 9 has protrusions 91 and side edges 93 on both sides. The side edges 93 on both sides of the support 9 abut against the sides of the bracket 1 and improve the connection firmness. The torsion spring 92 includes a torsion spring body 921 and two torsion arms 922. The two torsion arms 922 are respectively sleeved on the two protrusions 91. The torsion spring body 921 abuts against the left end of the spring piece 7. When the spring piece 7 is pressed down, the spring piece 7 swings down and compresses the torsion spring 92. When the spring piece 7 is released or in a stationary state, the torsion spring 92 provides an elastic force to make the spring piece 7 swing upward and reset.

[0054] It should be noted that in this embodiment, the torsion spring 92 with the reset function can also be replaced with a spring or a reset elastic steel sheet or other elastic element.

[0055] Referring again to Figures 3-4, during operation, when the spring 7 is pressed down and the torsion spring 92 is compressed, one end of the magnetically conductive swing plate 5 swings downward and abuts against the sixth flange 43, while the other end of the magnetically conductive swing plate 5 swings upward and abuts against the second flange 35 under the action of the fulcrum in the cavity 11, thus forming the first magnetic field. When the spring 7 is released, the spring 7 can drive one end of the magnetically conductive swing plate 5 to swing upward and abut against the fifth flange 33 under the elastic force of the torsion spring 92, while the other end of the magnetically conductive swing plate 5 swings downward and abuts against the fourth flange 45 under the action of the fulcrum 111 in the cavity 11, thus forming the second magnetic field opposite to the first magnetic field. The coil 2 senses the changing magnetic field and generates electricity. The electricity generated by the coil 2 can provide the power supply required for low-power electronic devices. Both ends of the magnetically conductive swing plate 5 generate magnetic force changes, resulting in a large power generation.

[0056] It should be noted that, in this embodiment, referring to Figures 3-4, there are also inclined surfaces (not shown in the figure) inside the cavity 11 and on both sides of the fulcrum 111. These inclined surfaces allow the bottoms of the fifth flange 33 and the sixth flange 43 to extend out of the opening of the cavity 11, so as to avoid the magnetic swing plate 5 from abutting against the inner wall of the cavity 11 during the swinging process, causing the magnetic swing plate 5 to fail to abut against the fifth flange 33 and the sixth flange 43, thus affecting the magnetic conduction effect when the magnetic swing plate 5 abuts against the fifth flange 33 and the sixth flange 43.

[0057] Specifically, in this embodiment, the first flange 34 and the first flat portion 31, the second flange 35 and the first flange 34, and the fifth flange 33 and the first flat portion 31 all adopt rounded corner transitions, thereby reducing stress concentration at the connection points between the first flange 34 and the first flat portion 31, between the second flange 35 and the first flange 34, and between the fifth flange 33 and the first flat portion 31, thus preventing cracking at the folded portion; in addition, the third flange 44 and the second flat portion 41, the fourth flange 45 and the third flange 44, and the sixth flange 43 and the second flat portion 41 all adopt rounded corner transitions, thereby reducing stress concentration at the connection points between the third flange 44 and the second flat portion 41, between the fourth flange 45 and the third flange 44, and between the sixth flange 43 and the second flat portion 41, thus preventing cracking at the folded portion; wherein, the first slot 32 is formed at the folded portion between the fifth flange 33 and the first flat portion 31; the second slot 42 is formed at the folded portion between the sixth flange 43 and the second flat portion 41.

[0058] Furthermore, the bracket 1 is provided with a first positioning protrusion 18 and a second positioning protrusion 181 on both sides. The first positioning protrusion 18 and the second positioning protrusion 181 are used to install the self-generating device of this utility model on a low-power electronic device to achieve a positioning function or a snap-fit ​​installation function.

[0059] It should be noted that, in this embodiment, the low-power electronic device may be a wireless switch or a wireless doorbell, etc.

[0060] In summary, the micro power generation device of this utility model, by setting the first bending part and the second bending part, avoids the need to add additional shims to fill the gap between the permanent magnet 6 and the first magnetic plate 3 or the second magnetic plate 4. At the same time, it also eliminates the need for additional clamps, reduces the product size, and facilitates combination and use, thereby simplifying the production process and reducing manufacturing costs. In addition, it can also avoid the influence of clamps and magnetic shims on the change of magnetic field direction, ensuring power generation efficiency and significantly improving the user experience.

[0061] In this utility model of a micro power generation device, the first magnetic plate 3 is also fixed to the top of the bracket 1 by engaging with the first buckle 12 through the first slot 32; the second magnetic plate 4 is also fixed to the bottom of the bracket 1 by engaging with the second buckle 121 through the second slot 42. This improves the firmness of the connection between the first magnetic plate 3, the second magnetic plate 4 and the bracket 1, and also eliminates the need for additional magnetic pads and clips, reducing the size and avoiding the influence of clips and magnetic pads on the change of magnetic field direction, thus ensuring power generation efficiency.

[0062] The miniature power generation device of this utility model provides an upward reset force for the spring 7 by setting a torsion spring 92 that abuts against the spring 7, so that the spring 7 is in an upward position when stationary and prepares for the next downward press; at the same time, the spring force of the torsion spring 92 reduces the force required for upward pressing, thereby reducing the number of presses and ensuring power generation efficiency.

[0063] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0064] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0065] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0066] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A micro power generation device, characterized by comprising: Comprise: Support and coil, the coil is around on the support; The first magnetic plate comprises a first flat section and a first bent section provided at one end of the first flat section; the first bent section comprises a first flange connected with one end of the first flat section and arranged vertically, and a second flange arranged horizontally and located at the bottom of the first flange; The second magnetic plate comprises a second flat section and a second bent section provided at one end of the second flat section; the second bent section comprises a third flange connected with one end of the second flat section and arranged vertically, and a fourth flange arranged horizontally and located at the bottom of the third flange; Permanent magnet, provided at one end of the support; Wherein, the first slot and the second slot are opened on the top and bottom of one end of the support, the second flange is inserted into the first slot to be fixed on the top of the support, and the second flange abuts against the top of the permanent magnet to realize magnetic conduction; the fourth flange is inserted into the second slot to be fixed on the bottom of the support, and the fourth flange abuts against the bottom of the permanent magnet to realize magnetic conduction.

2. The micro power generation device according to claim 1, wherein The other end of the support is provided with a first buckle and a second buckle on the top and bottom, a first clamping groove is opened on the first magnetic plate to cooperate with the first buckle, a second clamping groove is opened on the second magnetic plate to cooperate with the second buckle, and the first clamping groove and the first buckle are clamped, and the second clamping groove and the second buckle are clamped to fix the first magnetic plate and the second magnetic plate on the top and bottom of the support respectively.

3. The micro power generation device according to claim 1 or 2, wherein The top of the other end of the support is provided with a first buckle and a second buckle, the middle of the other end of the support is provided with a first clamping block and a second clamping block, the first clamping block and the first buckle have a first gap, the second clamping block and the second buckle have a second gap, and the first gap and the second gap form the first slot; The bottom of the other end of the support is provided with a third buckle and a fourth buckle, the first clamping block and the third buckle have a third gap, the second clamping block and the fourth buckle have a fourth gap, and the third gap and the fourth gap form the first slot.

4. The micro power generation device according to claim 3, wherein The middle of the other end of the support is provided with a first limiting block and a second limiting block, the first limiting block, the second limiting block, the second clamping block and the first clamping block form an installation slot, the permanent magnet is installed in the installation slot, and the first clamping block and the second clamping block are clamped on both sides of the permanent magnet respectively.

5. The micro power generation device according to claim 1 or 2, wherein It also includes a magnetic swing plate, the support is provided with a cavity with open ends, the upper and lower walls in the cavity are provided with two fulcrums for swinging, and the two fulcrums correspond to each other; the magnetic swing plate is arranged in the cavity and located between the two fulcrums, and the magnetic swing plate can swing up and down in the cavity.

6. The micro power generation device according to claim 5, wherein The first magnetic plate further comprises a fifth flange folded downward at the other end of the first flat section; the second magnetic plate further comprises a sixth flange folded downward at the other end of the second flat section; When the magnetic conduction swing plate swings up and down in the cavity, the magnetic conduction swing plate abuts against the fifth flange and the fourth flange to realize magnetic conduction, or the magnetic conduction swing plate abuts against the sixth flange and the second flange to realize magnetic conduction.

7. The micro power generation device according to claim 6, wherein Further comprising a spring sheet arranged at one end of the magnetic conduction swing plate, the spring sheet can drive the magnetic conduction swing plate to swing up and down in the cavity when the spring sheet acts.

8. The micro power generation device according to claim 7, wherein One end of the magnetic conduction swing plate is provided with a first connecting hole, the spring sheet is provided with a second connecting hole, and the spring sheet is fixed on one end of the magnetic conduction swing plate by penetrating the first connecting hole and the second connecting hole through a fastener.

9. The micro power generation device according to claim 8, wherein Further comprising a torsion spring for providing upward reset elastic force of the spring sheet, and the torsion spring abuts against the spring sheet.

10. The micro power generation device of claim 6, wherein, The first flange, the first flat portion and the second flange, the fifth flange and the first flat portion all adopt a round corner transition; The third flange, the second flat portion and the fourth flange, the sixth flange and the second flat portion all adopt a round corner transition.

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