Miniature power generation device

Abstract

The utility model discloses a miniature power generation device, which comprises a support, a coil, a first magnetic conductive plate, a second magnetic conductive plate and a permanent magnet, and is characterized in that the coil is wound on the support; the first magnetic conductive plate comprises a first plane part and a first bending part; the second magnetic conductive plate comprises a second plane part and a second bending part; the permanent magnet is arranged at one end of the bracket; wherein a first slot and a second slot are formed in one end of the bracket up and down, the second flange is inserted into the first slot so as to be fixed at the top of the bracket, and the second flange is propped against the top of the permanent magnet so as to realize magnetic conduction; and the fourth flange is inserted into the second slot to be fixed at the bottom of the bracket, and the fourth flange is propped against the bottom of the permanent magnet to realize magnetic conduction. Therefore, through the arrangement of the first bending part and the second bending part, a magnetic conductive gasket and a clamping piece which are additionally arranged are omitted, so that the production process is simplified, the manufacturing cost is reduced, meanwhile, the clamping piece and the magnetic conductive gasket can be prevented from influencing the direction change of a magnetic field, the power generation efficiency is ensured, and the use experience of a user is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro power generation, and particularly relates to a micro power generation device. Background Art

[0002] Existing micro power generation devices use the pressing force of hands or external micro mechanical pressure to provide an alternative solution for small low-power electronic products. These products include two magnets, two magnetic conduction plates, a bracket, a coil wound around the bracket, and a magnetic conduction sheet arranged at the center of the bracket. The two magnets are installed at both ends of the bracket and on both sides of the coil, and the two magnetic conduction plates are arranged on the upper and lower sides of the bracket.

[0003] However, in the actual practical process, it is found that the magnetic conduction plate is usually flat. When the permanent magnet is installed on the bracket, there will be a large gap between the permanent magnet and the magnetic conduction plate. It is necessary to additionally provide a magnetic conduction gasket to fill this gap so that the magnetic conduction between the magnetic conduction plate and the permanent magnet can be realized. Secondly, the existence of the magnetic conduction gasket will occupy most of the space on the bracket, resulting in the magnetic conduction plate unable to be directly fixed on the bracket. Therefore, it is also necessary to additionally provide a clip to clamp the magnetic conduction plate to fix the magnetic conduction plate on the bracket, which increases the structural complexity. At the same time, setting the clip also increases the thickness, resulting in a larger volume, which is not convenient for combined use, resulting in low flexibility. And due to the existence of the clip and the magnetic conduction gasket, it may also affect the change of the magnetic field direction of the magnetic conduction sheet, thereby affecting the power generation efficiency. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a micro power generation device. By setting a first bending part and a second bending part, it is avoided that it is necessary to additionally provide a gasket to fill the gap between the permanent magnet and the first magnetic conduction plate and the second magnetic conduction plate. At the same time, the additionally provided clip is also eliminated, the product volume is reduced, and it is convenient for combined use, thereby simplifying the production process and reducing the manufacturing cost. In addition, it can also avoid the clip and the magnetic conduction gasket from affecting the change of the magnetic field direction, ensuring the power generation efficiency and significantly improving the user experience.

[0005] The technical solution adopted by the utility model to solve its problems is:

[0006] A micro power generation device, comprising:

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

[0008] A first magnetic conduction plate, which includes a first flat part and a first bending part arranged at one end of the first flat part; the first bending part includes a first flanging connected to one end of the first flat part and arranged vertically and a second flanging arranged horizontally and located at the bottom of the first flanging;

[0009] A second magnetic conduction plate, which includes a second planar portion and a second bent portion provided at one end of the second planar portion; the second bent portion includes a third flange connected to one end of the second planar portion and arranged vertically and a fourth flange arranged horizontally and located at the bottom of the third flange;

[0010] A permanent magnet, which is provided at one end of the bracket;

[0011] Wherein, a first slot and a second slot are vertically formed at one end of the bracket, the second flange is inserted into the first slot to be fixed at the top of the bracket, and the second flange abuts against the top of the permanent magnet to achieve magnetic conduction; the fourth flange is inserted into the second slot to be fixed at the bottom of the bracket, and the fourth flange abuts against the bottom of the permanent magnet to achieve magnetic conduction.

[0012] Further, a first buckle and a second buckle are provided vertically at the other end of the bracket, a first card slot matched with the first buckle is formed on the first magnetic conduction plate, a second card slot matched with the second buckle is formed on the second magnetic conduction plate, the first card slot is clamped with the first buckle, and the second card slot is clamped with the second buckle so that the first magnetic conduction plate and the second magnetic conduction plate are respectively fixed on the upper and lower sides of the bracket.

[0013] Further, a first buckling position and a second buckling position are provided front and back at the top of the other end of the bracket, a first clamping block and a second clamping block are provided front and back in the middle of the other end of the bracket, a first gap is formed between the first clamping block and the first buckling position, a second gap is formed between the second clamping block and the second buckling position, and the first gap and the second gap form the first slot;

[0014] A third buckling position and a fourth buckling position are provided front and back at the bottom of the other end of the bracket, a third gap is formed between the first clamping block and the third buckling position, a fourth gap is formed between the second clamping block and the fourth buckling position, and the third gap and the fourth gap form the first slot.

[0015] Further, a first limiting block and a second limiting block are provided front and back in the middle of the other end of the bracket, the first limiting block, the second limiting block, the second clamping block and the first clamping block enclose to form an installation groove, the permanent magnet is installed in the installation groove, and the first clamping block and the second clamping block respectively clamp on both sides of the permanent magnet.

[0016] Further, a magnetic conduction swing plate is further included, a cavity with both ends open is provided in the bracket, two fulcrums for swinging are provided on the upper and lower walls in the cavity, and the two fulcrums correspond up and down; the magnetic conduction swing plate is arranged in the cavity and located between the two fulcrums, and the magnetic conduction swing plate can swing up and down in the cavity.

[0017] Furthermore, the first magnetic conduction plate further includes a fifth flanging portion that is turned downwards at the other end of the first planar portion; the second magnetic conduction plate further includes a sixth flanging portion that is turned downwards at the other end of the second planar portion;

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

[0019] Furthermore, it further includes a shrapnel disposed at one end of the magnetic conduction swing plate, and when the shrapnel acts, it can drive the magnetic conduction swing plate to swing up and down in the cavity.

[0020] Furthermore, a first connection hole is formed at one end of the magnetic conduction swing plate, a second connection hole is formed on the shrapnel, and the shrapnel is fixed to one end of the magnetic conduction swing plate by a fastener passing through the first connection hole and the second connection hole.

[0021] Furthermore, it further includes a torsion spring for providing an upward reset elastic force to the shrapnel, and the torsion spring abuts against the shrapnel.

[0022] Furthermore, a fillet transition is adopted between the first flanging portion and the first planar portion, between the second flanging portion and the first flanging portion, and between the fifth flanging portion and the first planar portion;

[0023] A fillet transition is adopted between the third flanging portion and the second planar portion, between the fourth flanging portion and the third flanging portion, and between the sixth flanging portion and the second planar portion.

[0024] In summary, for the micro power generation device of the present invention, by providing the first bending portion and the second bending portion, it is possible to avoid the need to additionally provide gaskets to fill the gaps between the permanent magnet and the first magnetic conduction plate and the second magnetic conduction plate. At the same time, the additionally provided clip is also omitted, reducing the product volume and facilitating combined use, thereby simplifying the production process and reducing the manufacturing cost. In addition, it can also avoid the influence of the clip and the magnetic conduction gasket on the change of the magnetic field direction, ensuring the power generation efficiency and significantly improving the user experience.

[0025] For the micro power generation device of the present invention, the first magnetic conduction plate is further fixed to the top of the bracket by snap - fitting of the first card slot and the first snap - lock; the second magnetic conduction plate is further fixed to the bottom of the bracket by snap - fitting of the second card slot and the second snap - lock, improving the firmness of the connection between the first magnetic conduction plate, the second magnetic conduction plate and the bracket. At the same time, the additionally provided magnetic conduction gasket and clip are also omitted, reducing the volume and avoiding the influence of the clip and the magnetic conduction gasket on the change of the magnetic field direction, ensuring the power generation efficiency. Description of the Drawings

[0026] Figure 1 Structural schematic diagram of the micro power generation device of the present utility model;

[0027] Figure 2 is Figure 1 exploded schematic diagram;

[0028] Figure 3 is Figure 1 cross-sectional schematic diagram of the first state of the magnetic conduction swing plate in

[0029] Figure 4 is Figure 1 cross-sectional schematic diagram of the second state of the magnetic conduction swing plate in

[0030] Figure 5 Structural schematic diagram of the bracket and coil in the micro power generation device of the present utility model;

[0031] Figure 6 Structural schematic diagram of the bracket and coil in another perspective of the micro power generation device of the present utility model;

[0032] Figure 7 Structural schematic diagram of the first magnetic conduction plate in the micro power generation device of the present utility model;

[0033] Figure 8 Structural schematic diagram of the second magnetic conduction plate in the micro power generation device of the present utility model;

[0034] Figure 9 Structural schematic diagram of the torsion spring in the micro power generation device of the present utility model.

[0035] Among them, the meanings of the reference numerals 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 buckling position; 151. Second buckling position; 152. First gap; 153. Second gap; 16. Third buckling position; 161. Fourth buckling position; 162. Third gap; 163. Fourth gap; 17. Boss; 18. First positioning protrusion; 181. Second positioning protrusion; 2. Coil; 3. First magnetic conductive plate; 31. First flat portion; 32. First card slot; 33. Fifth flanging; 34. First flanging; 35. Second flanging; 36. First avoidance groove; 37. Second avoidance groove; 4. Second magnetic conductive plate; 41. Second flat portion; 42. Second card slot; 43. Sixth flanging; 44. Third flanging; 45. Fourth flanging; 46. Third avoidance groove; 47. Fourth avoidance groove; 5. Magnetic conductive swing plate; 51. First connection hole; 52. Protrusion; 6. Permanent magnet; 7. Elastic sheet; 71. Second connection hole; 8. Fastener; 9. Support; 91. Convex column; 92. Torsion spring; 921. Torsion spring body; 922. Torsion arm; 93. Side edge. Detailed implementation mode

[0037] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred modules or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0040] Such as Figures 1-9A micro power generation device shown includes a bracket 1, a coil 2, a first magnetic conductive plate 3, a second magnetic conductive plate 4, and a permanent magnet 6; the coil 2 is wound around the bracket 1; the first magnetic conductive plate 3 includes a first planar portion 31 and a first bending portion provided at one end of the first planar portion 31; the first bending portion includes a first flange 34 connected to one end of the first planar 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 conductive plate 4 includes a second planar portion 41 and a second bending portion provided at one end of the second planar portion 41; the second bending portion includes a third flange 44 connected to one end of the second planar 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 arranged at one end of the bracket 1; wherein, a first slot and a second slot are opened vertically at one end of the bracket 1, the second flange 35 is inserted into the first slot to be fixed at 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 at 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 conductive plate 3 is provided with a first bending portion, and the first bending portion 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 conductive plate 3 at 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 conductive plate 4 is provided with a second bending portion, and the second bending portion 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 conductive plate 4 at the bottom of the bracket 1, and the fourth flange 45 abuts against the bottom of the permanent magnet 6 to achieve magnetic conduction, eliminating the need for additional magnetic conductive gaskets; by providing the first bending portion and the second bending portion, the space utilization rate on the bracket 1 is improved, so that the first slot and the second slot are opened on the bracket 1, facilitating the direct insertion and fixation of the first magnetic conductive plate 3 and the second magnetic conductive plate 4 on the bracket 1 and abutting against the permanent magnet 6 to achieve magnetic conduction, eliminating the need for additional magnetic conductive gaskets and fixing clips, reducing the product volume, facilitating combined use, thus simplifying the production process and reducing the manufacturing cost. At the same time, it also avoids the influence of the clips and the magnetic conductive gaskets on the change of the magnetic field direction, ensuring the power generation efficiency and significantly improving the user experience.

[0042] Further, on the upper and lower sides of the other end of the bracket 1, there are a first buckle 12 and a second buckle 121 respectively. A first slot 32 matching the first buckle 12 is formed on the first magnetic conductive plate 3, and a second slot 42 matching the second buckle 121 is formed on the second magnetic conductive plate 4. The first slot 32 is clamped with the first buckle 12, and the second slot 42 is clamped with the second buckle 121, so that the first magnetic conductive plate 3 and the second magnetic conductive plate 4 are respectively fixed on the upper and lower sides of the bracket 1, improving the firmness of the connection between the first magnetic conductive plate 3, the second magnetic conductive plate 4 and the bracket 1. At the same time, the additional magnetic conductive gaskets and clips are omitted, reducing the product volume.

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

[0044] Specifically, on the front and back of the bottom of the other end of the bracket 1, there are bosses 17. The right end of the first magnetic conductive plate 3 is also provided with a first avoidance groove 36 and a second avoidance groove 37 for abutting against the bosses 17, so that when the second flanging 35 of the first magnetic conductive plate 3 is inserted into the first gap 152 and the second gap 153, it is more firm; the right end of the second magnetic conductive plate 4 is also provided with a third avoidance groove 46 and a fourth avoidance groove 47 for abutting against the bosses 17, so that when the fourth flanging 45 of the second magnetic conductive plate 4 is inserted into the third gap 162 and the fourth gap 163, it is more firm; during installation, the first magnetic conductive plate 3 is clamped with the first buckle 12 provided on the bracket 1 through the first slot 32, and then the second flanging 35 is inserted into the first gap 152 and the second gap 153 at the other end of the bracket 1 to be fixed on the top of the bracket 1; the second magnetic conductive plate 4 is clamped with the second buckle 121 provided on the bracket 1 through the second slot 42, and then the fourth flanging 45 is inserted into the third gap 162 and the fourth gap 163 at the other end of the bracket 1 to be fixed on the bottom of the bracket 1.

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

[0046] Specifically, a first limiting block 13 and a second limiting block 131 are respectively arranged before and after the middle of the other end of the bracket 1. The first limiting block 13, the second limiting block 131, the second clamping block 141 and the first clamping block 14 enclose to 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 respectively clamp on both sides of the permanent magnet 6.

[0047] Furthermore, the micro power generation device of the present utility model further includes a magnetically conductive swing plate 5. A cavity 11 with both ends open is arranged in the bracket 1. Two fulcrums 111 for swinging are arranged on the upper and lower walls in the cavity 11, and the two fulcrums 111 correspond to each other up and down; the magnetically conductive swing plate 5 is arranged in the cavity 11 and between the two fulcrums 111, and the magnetically conductive swing plate 5 can swing up and down in the cavity 11.

[0048] Specifically, the first magnetically conductive plate 3 further includes a fifth flanging 33 which is turned downwards at the other end of the first plane portion 31; the second magnetically conductive plate 4 further includes a sixth flanging 43 which is turned downwards at the other end of the second plane portion 41; when the magnetically conductive swing plate 5 swings up and down in the cavity 11, the magnetically conductive swing plate 5 abuts against the fifth flanging 33 and the fourth flanging 45 to achieve magnetic conduction, or the magnetically conductive swing plate 5 abuts against the sixth flanging 43 and the second flanging 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 magnetic field changes when the magnetically conductive swing plate 5 swings, and the coil 2 induces the change of the magnetic field to generate electricity, which will not affect the power supply during its use. At the same time, only one permanent magnet 6 is provided, which also shortens the length of the power generation device, further reduces the volume of the power generation device, is convenient to be installed in the microelectronic product, and provides power supply for it.

[0050] Refer to Figure 2 , the micro power generation device of the present utility model further includes a shrapnel 7 arranged at one end of the magnetically conductive swing plate 5. When the shrapnel 7 acts, 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 flanging 33 and the fourth flanging 45 to achieve magnetic conduction; or the magnetically conductive swing plate 5 abuts against the sixth flanging 43 and the second flanging 35 to achieve magnetic conduction, so that the magnetic force on the magnetically conductive swing plate 5 changes, that is, the magnetic field changes, and the coil 2 induces the change of its magnetic field to generate electricity and provides the required power supply for the low-power electronic device.

[0051] Further, a first connection hole 51 is formed at one end of the magnetic conduction swing plate 5, and a second connection hole 71 is formed on the elastic piece 7. The elastic piece 7 is fixed to one end of the magnetic conduction swing plate 5 through a fastener 8 passing through the first connection hole 51 and the second connection hole 71. Wherein, a convex block 52 is provided at one end of the magnetic conduction swing plate 5, and two first connection holes 51 are provided and are respectively arranged on both sides of the convex block 52.

[0052] It should be noted that, in this embodiment, the first connection hole 51 and the second connection hole 71 may be screw holes, and the fastener 8 is a screw, which penetrates through the first connection hole 51 and the second connection hole 71 and is fastened to fix the elastic piece 7 on the convex block 52 at one end of the magnetic conduction swing plate 5. At the same time, the first connection hole 51 and the second connection hole 71 may also be through holes, and the fastener 8 is a rivet, which penetrates through the first connection hole 51 and the second connection hole 71 and is riveted to fix the elastic piece 7 on the convex block 52 at one end of the magnetic conduction swing plate 5. Here, no specific limitation is made.

[0053] Refer to Figure 9 Moreover, the micro power generation device of the present utility model further includes a torsion spring 92 for providing an upward reset elastic force to the elastic piece 7, and the torsion spring 92 abuts against the elastic piece 7. Specifically, in this embodiment, it further includes a support 9 connected to the bracket 1. Convex columns 91 and side edges 93 are provided on both sides of the support 9. The side edges 93 on both sides of the support 9 abut against both sides of the bracket 1 to improve the firmness of the connection. 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 convex columns 91, and the torsion spring body 921 abuts against the left end of the elastic piece 7; when the elastic piece 7 is pressed downward, the elastic piece 7 swings downward and compresses the torsion spring 92. When the elastic piece 7 is released or in a static state, the torsion spring 92 provides an elastic force to make the elastic piece 7 swing upward and reset.

[0054] It should be noted that, in this embodiment, the torsion spring 92 with a reset function may also be replaced with an elastic member such as a spring or a reset elastic steel sheet;

[0055] Refer to again Figures 3-4, during operation, when the elastic piece 7 is pressed downward to compress the torsion spring 92, one end of the magnetically conductive swing plate 5 is driven to swing downward and abuts against the sixth flanging 43 for magnetic conduction. At the same time, under the action of the fulcrum in the cavity 11, the other end of the magnetically conductive swing plate 5 swings upward and abuts against the second flanging 35 for magnetic conduction, thereby forming the first magnetic field. When the elastic piece 7 is released, the elastic piece 7 can drive one end of the magnetically conductive swing plate 5 to swing upward and abut against the fifth flanging 33 for magnetic conduction under the elastic force of the torsion spring 92. At the same time, under the action of the fulcrum 111 in the cavity 11, the other end of the magnetically conductive swing plate 5 swings downward and abuts against the fourth flanging 45 for magnetic conduction, thereby forming the second magnetic field with the opposite direction to the first magnetic field. The coil 2 induces the changing magnetic field to generate electricity, and the electricity generated by the coil 2 can provide the required power supply for low-power electronic devices. Magnetic force changes occur at both ends of the magnetically conductive swing plate 5, and the power generation amount is large.

[0056] It should be noted that, in this embodiment, referring to Figures 3-4 , inclined planes (not marked in the figure) are also provided on both sides of the fulcrum 111 in the cavity 11. The inclined planes can make the bottoms of the fifth flanging 33 and the sixth flanging 43 extend out of the open end of the cavity 11, so as to prevent the magnetically conductive swing plate 5 from abutting against the inner wall of the cavity 11 during the swinging process, resulting in improper abutment between the magnetically conductive swing plate 5 and the fifth flanging 33 and the sixth flanging 43, and affecting the magnetic conduction effect when the magnetically conductive swing plate 5 abuts against the fifth flanging 33 and the sixth flanging 43.

[0057] Specifically, in this embodiment, the first flanging 34 and the first planar portion 31, the second flanging 35 and the first flanging 34, and the fifth flanging 33 and the first planar portion 31 all adopt rounded transitions, so as to reduce the stress concentration at the joints between the first flanging 34 and the first planar portion 31, between the second flanging 35 and the first flanging 34, and between the fifth flanging 33 and the first planar portion 31, and avoid cracking at the folding places. In addition, the third flanging 44 and the second planar portion 41, the fourth flanging 45 and the third flanging 44, and the sixth flanging 43 and the second planar portion 41 all adopt rounded transitions, so as to reduce the stress concentration at the joints between the third flanging 44 and the second planar portion 41, between the fourth flanging 45 and the third flanging 44, and between the sixth flanging 43 and the second planar portion 41, and avoid cracking at the folding places. Among them, the first card slot 32 is opened at the folding place between the fifth flanging 33 and the first planar portion 31; the second card slot 42 is opened at the folding place between the sixth flanging 43 and the second planar portion 41.

[0058] Furthermore, first positioning protrusions 18 and second positioning protrusions 181 are also provided on both sides of the bracket 1. The first positioning protrusions 18 and the second positioning protrusions 181 are used to position or snap-fit the self-power generation device of the present invention on a low-power electronic device.

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

[0060] In summary, for the micro power generation device of the present utility model, by providing the first bending portion and the second bending portion, it is avoided that additional gaskets need to be added to fill the gap between the permanent magnet 6 and the first magnetic conduction plate 3 or the second magnetic conduction plate 4. At the same time, the additional clamping pieces are also eliminated, the product volume is reduced, and it is convenient for combined use, thereby simplifying the production process and reducing the manufacturing cost. In addition, it can also avoid the influence of the clamping pieces and the magnetic conduction gaskets on the change of the magnetic field direction, ensure the power generation efficiency, and significantly improve the user experience.

[0061] For the micro power generation device of the present utility model, the first magnetic conduction plate 3 is also clamped and fixed to the top of the bracket 1 through the first card slot 32 and the first buckle 12; the second magnetic conduction plate 4 is also clamped and fixed to the bottom of the bracket 1 through the second card slot 42 and the second buckle 121, which improves the firmness of the connection between the first magnetic conduction plate 3, the second magnetic conduction plate 4 and the bracket 1. At the same time, the additional magnetic conduction gaskets and clamping pieces are also eliminated, the volume is reduced, and the influence of the clamping pieces and the magnetic conduction gaskets on the change of the magnetic field direction is avoided, ensuring the power generation efficiency.

[0062] For the micro power generation device of the present utility model, by providing the torsion spring 92 that abuts against the elastic piece 7, an upward reset elastic force is provided for the elastic piece 7, so that the elastic piece 7 is in an upward position in the static state and prepares for the next downward pressing; at the same time, the elastic force of the torsion spring 92 reduces the force required for upward pressing, thereby reducing the number of presses and ensuring the power generation efficiency.

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

[0064] It should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred module or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0065] In addition, in the description of the present utility model, the meanings of "a plurality of" and "several" are two or more, unless otherwise specifically defined.

[0066] The technical means disclosed by the solution of the present utility model are not limited to those disclosed by the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present utility model.

Claims

1. A micro power generation device, characterized in that: include: A support and a coil, wherein the coil is wound on the support; A first magnetic conductive plate, comprising a first plane portion and a first bent portion arranged at one end of the first plane portion; the first bent portion comprises a first flange connected to one end of the first plane portion and arranged vertically, and a second flange arranged transversely and located at the bottom of the first flange; A second magnetic conductive plate, comprising a second plane portion and a second bent portion arranged at one end of the second plane portion; the second bent portion comprises a third flange connected to one end of the second plane portion and arranged vertically, and a fourth flange arranged transversely and located at the bottom of the third flange; A permanent magnet, which is arranged at one end of the bracket; Among them, a first slot and a second slot are opened at the upper and lower ends of one end of the bracket, the second flange is plugged into the first slot to be fixed on the top of the bracket, and the second flange abuts against the top of the permanent magnet to achieve magnetic conductivity; the fourth flange is plugged into the second slot to be fixed on the bottom of the bracket, and the fourth flange abuts against the bottom of the permanent magnet to achieve magnetic conductivity.

2. The micro power generation device according to claim 1, characterized in that: The other end of the bracket is provided with a first buckle and a second buckle at the upper and lower parts. The first magnetic conductive plate is provided with a first slot that matches the first buckle, and the second magnetic conductive plate is provided with a second slot that matches the second buckle. The first slot is connected with the first buckle, and the second slot is connected with the second buckle so that the first magnetic conductive plate and the second magnetic conductive plate are respectively fixed on the upper and lower sides of the bracket.

3. The micro power generation device according to claim 1 or 2, characterized in that: A first buckle position and a second buckle position are provided at the front and rear of the top of the other end of the bracket, a first clamping block and a second clamping block are provided at the front and rear of the middle of the other end of the bracket, a first gap is provided between the first clamping block and the first buckle position, a second gap is provided between the second clamping block and the second buckle position, and the first gap and the second gap form the first slot; A third buckle position and a fourth buckle position are provided at the front and rear of the bottom of the other end of the bracket, a third gap is provided between the first clamp block and the third buckle position, a fourth gap is provided between the second clamp block and the fourth buckle position, and the third gap and the fourth gap form the first slot.

4. The micro-generator according to claim 3, characterized in that: A first limit block and a second limit block are provided at the front and rear of the middle part of the other end of the bracket. The first limit block, the second limit block, the second clamp block and the first clamp block together form an installation groove. The permanent magnet is installed in the installation groove, and the first clamp block and the second clamp block are respectively clamped on both sides of the permanent magnet.

5. The micro power generation device according to claim 1 or 2, characterized in that: It also includes a magnetic swing plate, a cavity with open ends is provided in the bracket, and the upper and lower walls in the cavity are provided with two fulcrums for swinging, and the two fulcrums correspond to each other up and down; 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-generator according to claim 5, characterized in that: The first magnetic conductive plate further includes a fifth flange disposed at the other end of the first planar portion and folded downward; the second magnetic conductive plate further includes a sixth flange disposed at the other end of the second planar portion and folded downward; When the magnetic conductive swing plate swings up and down in the cavity, the magnetic conductive swing plate abuts against the fifth flange and the fourth flange to achieve magnetic conductivity, or the magnetic conductive swing plate abuts against the sixth flange and the second flange to achieve magnetic conductivity.

7. The micro-generator according to claim 6, characterized in that: It also includes a spring sheet arranged at one end of the magnetic conductive swing plate, and when the spring sheet moves, it can drive the magnetic conductive swing plate to swing up and down in the cavity.

8. The micro-generator according to claim 7, characterized in that: A first connecting hole is provided at one end of the magnetically conductive swinging plate, a second connecting hole is provided on the spring sheet, and the spring sheet is fixed to one end of the magnetically conductive swinging plate via a fastener penetrating through the first connecting hole and the second connecting hole.

9. The micro-generator according to claim 8, characterized in that: It also includes a torsion spring for providing an elastic force for the elastic sheet to return upward, and the torsion spring abuts against the elastic sheet.

10. The micro-generator according to claim 6, characterized in that: The first flange and the first plane portion, the second flange and the first flange, and the fifth flange and the first plane portion all adopt rounded transition; The third flange and the second plane portion, the fourth flange and the third flange, and the sixth flange and the second plane portion all adopt rounded transition.

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