Permanent magnet generator

Abstract

The utility model discloses a permanent magnet generator, which relates to the technical field of generators and comprises a casing assembly and a trigger assembly, the casing assembly comprises a casing, a dustproof cover, a stator, a rotor and a rotating shaft, the casing is provided with a heat dissipation port, the dustproof cover is rotatably arranged at the heat dissipation port, the stator is arranged in the casing, and the rotating shaft is rotatably arranged in the casing and connected with the rotor. The triggering assembly comprises a sliding part and an elastic rope, the sliding part is slidably connected with the machine shell, the two ends of the elastic rope are connected with the rotating shaft and the sliding part, and the elastic rope can elastically extend when the rotating shaft rotates to drive the sliding part to slidably abut against the dustproof cover so that the dustproof cover can rotate to open the heat dissipation opening. In the working process of the permanent magnet generator, the heat dissipation opening is automatically driven to be opened, so that heat dissipation can be conveniently carried out on the interior of the permanent magnet generator. When the permanent magnet generator stops working, the heat dissipation opening is automatically closed, dust can be prevented from entering the permanent magnet generator, use is convenient, and more dust can be prevented from entering the generator.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, specifically to a permanent magnet generator. Background Technology

[0002] A permanent magnet generator is a device that converts mechanical energy into electrical energy. With increasing energy demand and a growing emphasis on efficient and clean energy utilization, its development has attracted significant attention. Traditional generators suffer from certain losses and efficiency limitations, while permanent magnet generators, using permanent magnets to provide the magnetic field, require no external excitation power supply, reducing losses and improving efficiency. Furthermore, they are relatively simple in structure and reliable in operation, making them widely used in wind power generation, small hydropower, automobiles, and many other fields. They play a crucial role in promoting energy conservation and efficiency in related industries.

[0003] The prior art disclosed in CN220798057U is a magnetic levitation permanent magnet generator, including a base body and an installation mechanism disposed on the outer wall of the base body. By incorporating a locking lever, to improve the ease of assembly and disassembly of the magnetic levitation permanent magnet generator during daily use and to prevent cumbersome installation using multiple bolts, a knob can be rotated to rotate a threaded rod, causing a threaded slider to slide along the inner wall of a fixed groove. The sliding of the threaded slider, through the rotation of a pull rod and its connection with a connecting rod, causes the locking lever to slide along the inner wall of the groove, simultaneously causing the locking lever to slide out from the inner wall of the groove. This facilitates the easy disassembly of the magnetic levitation permanent magnet generator from the outer wall of the base body, improving the ease of assembly and disassembly during use.

[0004] However, the existing permanent magnet generator still has shortcomings. For example, the front and rear ends of the generator are open structures, and after long-term use, a lot of dust can easily enter the generator, thus affecting the generator's heat dissipation function. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a permanent magnet generator that solves the technical problem that in the prior art, the front and rear ends of the generator are open structures, which makes it easy for a lot of dust to enter the generator after long-term use, thus affecting the generator's heat dissipation function.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a permanent magnet generator, comprising:

[0008] A housing assembly includes a housing, a dust cover, a stator, a rotor, and a rotating shaft. The housing has heat dissipation vents, the dust cover is rotatably mounted on the heat dissipation vents, the stator is mounted on the housing, and the rotating shaft is rotatably mounted on the housing and connected to the rotor.

[0009] The triggering component includes a slider and an elastic cord. The slider is slidably connected to the housing. The two ends of the elastic cord are connected to the rotating shaft and the slider. The elastic cord can elastically extend when the rotating shaft rotates to drive the slider to slide against the dust cover, so that the dust cover rotates to open the heat dissipation vent.

[0010] In some embodiments, the housing has a sliding groove and a receiving cavity, the heat dissipation port, the sliding groove and the receiving cavity are connected in sequence, the stator is disposed on the cavity wall of the receiving cavity, the rotor is located in the receiving cavity, the sliding member is slidably disposed in the sliding groove, and the elastic rope is located in the sliding groove.

[0011] In some embodiments, the slider includes a drive head and a connecting rod, one end of the connecting rod being connected to the drive head and the other end being connected to the elastic rope, wherein the radial dimension of the drive head is larger than the radial dimension of the connecting rod.

[0012] In some embodiments, the housing has a limiting portion located in the slide groove, and the slider further includes a snap-fit ​​portion. The two sides of the snap-fit ​​portion are connected to the connecting rod and the elastic rope. The radial dimension of the snap-fit ​​portion is greater than the radial dimension of the connecting rod and smaller than the inner diameter of the slide groove. The limiting portion is used to abut against the snap-fit ​​portion to limit the excessive sliding of the slider.

[0013] In some embodiments, the triggering component further includes a reset spring located between the limiting portion and the locking portion. When the elastic cord drives the slider toward the dust cover, the locking portion can press against the reset spring to compress it and accumulate elastic force. When the rotating shaft stops rotating, the reset spring can release the elastic force to drive the slider to reset.

[0014] In some embodiments, the housing assembly further includes a movable window having a through heat dissipation hole. The movable window is slidably disposed on the heat dissipation opening. The movable window is located between the dust cover and the slider and is capable of sliding toward the dust cover when pressed by the sliding slider, so as to drive the dust cover to rotate and open the heat dissipation opening.

[0015] In some embodiments, the movable window includes a central seat, a ring, and a plurality of blades. The central seat is located at the center of the ring and is used to contact the slider. The plurality of blades are arranged around the periphery of the ring, and both ends of each blade are connected to the ring and the central seat. Adjacent blades are spaced apart to form the heat dissipation holes.

[0016] In some embodiments, the dust cover has a guide arc surface. When the center seat is pressed by the slider, the ring can slide against the guide arc surface to drive the dust cover to rotate and open the heat dissipation vent.

[0017] In some embodiments, the outer wall of the ring is provided with a protrusion, and the housing is provided with a limiting groove, which is slidably engaged with the protrusion.

[0018] In some embodiments, the dust cover is provided with a first magnetic element, and the housing has a second magnetic element. When the dust cover closes the heat dissipation vent, the first magnetic element and the second magnetic element are magnetically attracted to each other.

[0019] Compared with existing technologies, the permanent magnet generator provided by this utility model has a rotating shaft that can rotate under the action of an external power source (such as wind power, water power, diesel engine, etc.). During the rotation of the shaft, it can drive the rotor to rotate, and the rotor can drive the stator to generate current through electromagnetic induction to generate electricity. In addition, during the rotation of the shaft, it can drive the elastic rope to stretch elastically, and the elastic rope can drive the sliding member to slide away from the shaft, so that the sliding member presses against the dust cover, causing the dust cover to rotate relative to the housing and open the heat dissipation vent. When the shaft stops rotating, the elastic rope can shorten and return to its original position, and through the elastic force, it can drive the sliding member to slide back towards the shaft to return to its original position. The dust cover rotates downwards under its own weight to return to its original position and close the heat dissipation vent again. It can be seen that the permanent magnet generator of this application can automatically drive the heat dissipation vent to open during operation to facilitate heat dissipation inside the permanent magnet generator. When the permanent magnet generator stops working, the heat dissipation vent automatically closes, which can prevent dust from entering the permanent magnet generator. It is not only convenient to use, but also prevents a large amount of dust from entering the generator. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the permanent magnet generator provided in this embodiment when it is not in operation;

[0021] Figure 2 This is a schematic diagram of the permanent magnet generator in operation according to an embodiment of the present invention;

[0022] Figure 3 This is an internal schematic diagram of the permanent magnet power generation provided in an embodiment of this utility model;

[0023] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the diagram. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] To address the technical problem that existing generators have open front and rear ends, which allows dust to easily enter the generator after prolonged use, thus affecting its heat dissipation function, this invention provides a permanent magnet generator that can automatically dissipate heat during use and automatically close the heat dissipation vents to prevent dust when not in use.

[0026] Please see Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a permanent magnet generator in one embodiment of the present invention. The permanent magnet generator includes a housing assembly and a trigger assembly. The housing assembly includes a housing 1, a dust cover 2, a stator 3, a rotor 4, and a rotating shaft 5. The housing 1 has a heat dissipation vent 11. The dust cover 2 is rotatably disposed at the heat dissipation vent 11. The stator 3 is disposed on the housing 1. The rotating shaft 5 is rotatably disposed on the housing 1 and connected to the rotor 4.

[0027] The triggering component includes a slider 6 and an elastic rope 7. The slider 6 is slidably connected to the housing 1. The two ends of the elastic rope 7 are connected to the rotating shaft 5 and the slider 6. The elastic rope 7 can elastically extend when the rotating shaft 5 rotates to drive the slider 6 to slide and press against the dust cover 2, so that the dust cover 2 rotates and opens the heat dissipation vent 11.

[0028] In this embodiment, the permanent magnet is the key component for generating the magnetic field. It is made of a strongly magnetic material such as neodymium iron boron magnet and is fixed in the rotor 4. When the rotor 4 is stationary, the permanent magnet generates a stable magnetic field. When an external power source (such as wind power, water power, diesel engine, etc.) drives the shaft 5 to rotate, the shaft 5 drives the rotor 4 to rotate together, causing the permanent magnet in the rotor 4 to rotate at high speed, thereby generating mechanical energy and providing the power basis for the power generation process. When the rotor 4 rotates, the magnetic field it generates also rotates, while the stator 3 is stationary and has conductive wires wound on it. The rotating magnetic field will continuously cut the windings on the stator 3. According to the law of electromagnetic induction, when the conductive wire moves in the magnetic field and cuts the magnetic field lines, an induced electromotive force will be generated in the conductor, thus generating an induced current in the windings of the stator 3.

[0029] As the shaft 5 rotates, the elastic rope 7 stretches elastically, causing the sliding member 6 to slide away from the shaft 5. The sliding member 6 then causes the dust cover 2 to rotate and open the heat dissipation vent 11, facilitating heat dissipation inside the generator. When the shaft 5 gradually stops rotating, the elastic rope 7 releases its elastic force, causing the sliding member 6 to slide back towards the shaft 5. The dust cover 2, no longer subjected to the force of the sliding member 6, can rotate back to its original position under its own weight, closing the heat dissipation vent 11 again. This prevents dust from entering the generator through the heat dissipation vent 11 when it is not in use.

[0030] In one embodiment, please refer to Figure 3 The housing 1 has a sliding groove 12 and a receiving cavity 13. The heat dissipation vent 11, the sliding groove 12, and the receiving cavity 13 are connected in sequence. The stator 3 is disposed on the cavity wall of the receiving cavity 13, and the rotor 4 is located in the receiving cavity 13. The rotor 4 can rotate in the receiving cavity 13 when the stator 3 is energized. The sliding member 6 is slidably disposed in the sliding groove 12. The sliding groove 12 and the sliding member 6 are adapted to slide and connect, so that the sliding member 6 can slide back and forth stably. The elastic rope 7 is located in the sliding groove 12.

[0031] In one embodiment, please refer to Figure 4 The sliding member 6 includes a drive head 61 and a connecting rod 62. One end of the connecting rod 62 is connected to the drive head 61, and the other end is connected to the elastic rope 7. The radial dimension of the drive head 61 is larger than that of the connecting rod 62. In this embodiment, the drive head 61 is larger, resulting in a larger effective area for the dust cover 2, making it easier to open the dust cover 2. The connecting rod 62 is smaller and cylindrical. The sliding member 6 is slidably disposed in the groove 12 via the connecting rod 62, allowing the sliding member 6 to slide stably. In addition, the rotating shaft 5 can drive the elastic rope 7 to rotate during rotation, and the elastic rope 7 can also drive the sliding member 6 to rotate while driving the sliding member 6 to slide.

[0032] In one embodiment, please refer to Figure 4 The housing 1 has a limiting part 14 located in the slide groove 12. The sliding member 6 also includes a locking part 63. The locking part 63 is connected to the connecting rod 62 and the elastic rope 7 on both sides. The radial dimension of the locking part 63 is larger than the radial dimension of the connecting rod 62 and smaller than the inner diameter of the slide groove 12. The limiting part 14 is used to abut against the locking part 63 to limit the sliding member 6 from excessive sliding.

[0033] In one embodiment, the triggering component further includes a reset spring (not shown in the figure), located between the limiting part 14 and the locking part 63. When the elastic rope 7 drives the sliding member 6 to slide towards the dust cover 2, the locking part 63 can press against the reset spring to compress it and accumulate elastic force. When the rotating shaft 5 stops rotating, the reset spring can release the elastic force to drive the sliding member 6 to reset. In this embodiment, by setting a reset spring, the sliding member 6 can be driven to reset into place, so that when the generator is not in use, the dust cover 2 can stably cover the heat dissipation port 11 to perform a dust prevention function.

[0034] In one embodiment, please refer to Figure 2 The housing assembly also includes a movable window 8, which has a through-hole for heat dissipation 81. The movable window 8 is slidably disposed on the heat dissipation vent 11. The movable window 8 is located between the dust cover 2 and the sliding member 6, and can slide towards the dust cover 2 when pressed by the sliding member 6, thereby driving the dust cover 2 to rotate and open the heat dissipation vent 11. In this embodiment, the sliding member 6 can indirectly act on the dust cover 2 through the movable window 8 when sliding, thereby driving the dust cover 2 to rotate and open the heat dissipation vent 11. In other embodiments, the movable window 8 may be omitted, and the sliding member 6 may be directly connected to the dust cover 2, with the sliding member 6 directly pressing against the dust cover 2 to rotate and open the heat dissipation vent 11 when sliding.

[0035] In one embodiment, please refer to Figure 2 The movable window 8 includes a central seat 82, a ring 83, and multiple blades 84. The central seat 82 is located at the center of the ring 83 and is used to contact the sliding member 6. The multiple blades 84 are arranged around the periphery of the ring 83, and both ends of each blade 84 are connected to the ring 83 and the central seat 82. Adjacent blades 84 form heat dissipation holes 81 at intervals. In this embodiment, the movable window 8 has multiple blades 84 arranged along its periphery, and the multiple blades 84 form multiple heat dissipation holes 81 at intervals to improve heat dissipation efficiency. In addition, when the central seat 82 is pressed by the sliding member 6, the central seat 82 can evenly transmit the force to the periphery of the ring 83 through the multiple blades 84, so that the ring 83 is subjected to uniform force and can slide stably.

[0036] In one embodiment, please refer to Figure 4The dust cover 2 has a guide arc surface 21. When the center seat 82 is pressed by the slider 6, the edge of the ring 83 can slide and press against the guide arc surface 21 to drive the dust cover 2 to rotate and open the heat dissipation vent 11. In this embodiment, by having the edge of the ring 83 press against the edge of the dust cover 2, the ring 83 does not need to move a large distance to drive the dust cover 2 to open completely. In addition, by pressing against the guide arc surface 21 of the dust cover 2, the ring 83 can smoothly open the dust cover 2 without jamming. When the slider 6 is reset, the ring 83 loses the support of the slider 6, and the dust cover 2 can rotate under its own weight to drive the ring 83 to slide back to its original position. At the same time, the dust cover 2 rotates to close the heat dissipation vent 11.

[0037] In one embodiment, the outer wall of the ring 83 is provided with a protrusion (not shown in the figure), and the housing 1 is provided with a limiting groove (not shown in the figure), which is slidably engaged with the protrusion. In this embodiment, the ring 83 is slidably engaged with the limiting groove of the housing 1 through the protrusion, so as to limit the movable window 8 and prevent the movable window 8 from sliding out of the heat dissipation vent 11.

[0038] In one embodiment, please refer to Figure 4 The dust cover 2 is equipped with a first magnetic 22, and the housing 1 has a second magnetic 15. When the dust cover 2 closes the heat dissipation vent 11, the first magnetic 22 and the second magnetic 15 are magnetically attracted to each other. In this embodiment, by setting up magnetic assemblies, the dust cover 2 is magnetically attracted to the housing 1 when the heat dissipation vent 11 is closed, which enhances the stability of the connection between the dust cover 2 and the housing 1 and prevents the dust cover 2 from being easily opened and allowing dust to enter when the generator is not in use.

[0039] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below:

[0040] The permanent magnet generator provided by this utility model has a rotating shaft 5 that can rotate under the action of an external power source (such as wind power, water power, diesel engine, etc.). During the rotation of the rotating shaft 5, it can drive the rotor 4 to rotate. When the rotor 4 rotates, it can drive the stator 3 to generate current through electromagnetic induction for power generation. In addition, during the rotation of the rotating shaft 5, it can drive the elastic rope 7 to stretch elastically. The elastic rope 7 drives the sliding member 6 to slide away from the rotating shaft 5, so that the sliding member 6 presses against the dust cover 2, causing the dust cover 2 to rotate relative to the housing 1 and open the heat dissipation vent 11. When the rotating shaft 5 stops rotating, the elastic rope 7 can shorten and return to its original position. Through elastic force, it drives the sliding member 6 to slide back towards the rotating shaft 5. The dust cover 2 rotates downwards under its own weight to return to its original position and close the heat dissipation vent 11 again. It can be seen that the permanent magnet generator of this application can automatically drive the heat dissipation vent 11 to open during operation, so as to facilitate heat dissipation inside the permanent magnet generator. When the permanent magnet generator stops working, the heat dissipation vent 11 automatically closes, which can prevent dust from entering the permanent magnet generator. This not only makes it convenient to use, but also prevents a lot of dust from entering the generator and affecting its heat dissipation.

[0041] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A permanent magnet generator, characterized in that, include: A housing assembly includes a housing, a dust cover, a stator, a rotor, and a rotating shaft. The housing has a heat dissipation vent, the dust cover is rotatably mounted on the heat dissipation vent, the stator is mounted on the housing, and the rotating shaft is rotatably mounted on the housing and connected to the rotor. The triggering component includes a slider and an elastic cord. The slider is slidably connected to the housing. The two ends of the elastic cord are connected to the rotating shaft and the slider. The elastic cord can elastically extend when the rotating shaft rotates to drive the slider to slide against the dust cover, so that the dust cover rotates to open the heat dissipation vent.

2. The permanent magnet generator according to claim 1, characterized in that, The housing has a sliding groove and a receiving cavity. The heat dissipation port, the sliding groove and the receiving cavity are connected in sequence. The stator is disposed on the cavity wall of the receiving cavity. The rotor is located in the receiving cavity. The sliding member is slidably disposed in the sliding groove. The elastic rope is located in the sliding groove.

3. The permanent magnet generator according to claim 2, characterized in that, The sliding component includes a drive head and a connecting rod. One end of the connecting rod is connected to the drive head, and the other end is connected to the elastic rope. The radial dimension of the drive head is larger than the radial dimension of the connecting rod.

4. The permanent magnet generator according to claim 3, characterized in that, The housing has a limiting portion located in the slide groove, and the sliding member further includes a snap-fit ​​portion. The two sides of the snap-fit ​​portion are connected to the connecting rod and the elastic rope. The radial dimension of the snap-fit ​​portion is larger than the radial dimension of the connecting rod and smaller than the inner diameter of the slide groove. The limiting portion is used to abut against the snap-fit ​​portion to limit the excessive sliding of the sliding member.

5. The permanent magnet generator according to claim 4, characterized in that, The triggering component also includes a reset spring located between the limiting portion and the locking portion. When the elastic rope drives the sliding member to slide toward the dust cover, the locking portion can press against the reset spring to compress it and accumulate elastic force. When the rotating shaft stops rotating, the reset spring can release the elastic force to drive the sliding member to reset.

6. The permanent magnet generator according to claim 1, characterized in that, The housing assembly also includes a movable window with a through heat dissipation hole. The movable window is slidably disposed on the heat dissipation opening. The movable window is located between the dust cover and the sliding member, and can slide toward the dust cover when it is pressed by the sliding member, so as to drive the dust cover to rotate and open the heat dissipation opening.

7. The permanent magnet generator according to claim 6, characterized in that, The movable window includes a central seat, a ring, and multiple blades. The central seat is located at the center of the ring and is used to contact the sliding member. The multiple blades are arranged around the periphery of the ring, and both ends of each blade are connected to the ring and the central seat. Adjacent blades are spaced apart to form the heat dissipation holes.

8. The permanent magnet generator according to claim 7, characterized in that, The dust cover has a guide arc surface. When the center seat is pressed by the sliding member, the ring can slide and press against the guide arc surface to drive the dust cover to rotate and open the heat dissipation port.

9. The permanent magnet generator according to claim 7, characterized in that, The outer wall of the ring is provided with a protrusion, and the housing is provided with a limiting groove, which is slidably engaged with the protrusion.

10. The permanent magnet generator according to claim 1, characterized in that, The dust cover is provided with a first magnetic attraction element, and the housing has a second magnetic attraction element. When the dust cover closes the heat dissipation vent, the first magnetic attraction element and the second magnetic attraction element are magnetically attracted to each other.

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