External rotor motor
By installing a shock-proof mechanism and an inclined linkage on the outer wall of the yoke of the outer rotor motor, the problem of noise and heat accumulation generated by the motor vibration is solved, and the stability and safety of the equipment are improved.
Patent Information
- Application Number
- CN202422233830.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The outer rotor motor vibrates during use to generate noise and closes the inside to isolate the noise, which can cause heat accumulation and damage to the parts.
An external rotor motor is designed, and a shock-proof mechanism is used to install it on the outer wall of the yoke. The shock-proof mechanism includes a return spring and a clamping block, which can avoid direct contact with the outside world when the yoke is subjected to centrifugal force, and synchronously dissipate heat through an inclined linkage to reduce heat accumulation.
It effectively reduces noise and heat accumulation, improves the stability and safety of the equipment, and avoids damage to internal components.
Smart Images
Figure CN222802666U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to an outer rotor motor. Background Art
[0002] The principle of the rotor motor is to use the magnetic field generated by the stator to generate torque. The permanent magnet synchronous motor can be divided into an outer rotor structure and an inner rotor structure according to the position of the rotor in the motor. The difference is whether it rotates inside or outside. The one that rotates inside is the inner rotor structure, and the one that rotates outside is the outer rotor structure. Currently, outer rotor motors are mostly used in scenarios such as drones and impellers.
[0003] The outer rotor motor will vibrate during use, and noise is inevitable when vibrating. The method of isolating noise in the prior art is to directly seal the inside. Although this can block the noise, it will also cause heat accumulation inside. When the heat is too high, it may cause damage to internal components. Moreover, if a collision occurs after the inside is directly sealed, the power will be directly transmitted to the outer rotor motor, which may also cause damage to internal components. Utility Model Content
[0004] The purpose of the utility model is to provide an outer rotor motor to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0006] The utility model discloses an outer rotor motor, comprising a motor body, wherein an anti-vibration mechanism is fixedly installed on the outer wall of the motor body, the motor body comprises a motor upper cover, the inner wall of the motor upper cover is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a linkage frame, the outer wall of the linkage frame is fixedly connected with a yoke, one side of the yoke is rotatably connected with one side of the motor upper cover, the other side of the yoke is fixedly connected with a motor lower shell, the inner wall of the yoke is provided with a groove, the inner wall of the groove is fixedly connected with a permanent magnet, and there are multiple groups of permanent magnets, and the inner wall of each group of the permanent magnets is rotatably connected with a stator.
[0007] The shockproof mechanism includes a shockproof shell, which has two groups. The outer wall of each group of the shockproof shell is fixedly installed with a hinge, the outer wall of the hinge is provided with a through hole, the inner wall of the through hole is threaded with a fixing screw, the outer wall of each group of the shockproof shell is fixedly connected with a clamping block, and there are two groups of clamping blocks, one group of the clamping blocks has a rotating hole on the inner wall, the inner wall of the rotating hole is rotatably connected with a clamping plate, the other group of the clamping blocks has a clamping interface on the inner wall, the inner wall of the clamping interface is clamped with the outer wall of the clamping plate, the outer wall of the clamping plate is fixedly connected with a grip block, the inner wall of each group of the shockproof shell is fixedly connected with a reset spring, and there are multiple groups of reset springs, one end of each group of the reset springs is fixedly connected with a force plate, and the inner wall of the force plate is rotatably connected to the outer wall of the yoke.
[0008] With the above technical solution, it is necessary to wind a copper coil on the outer wall of the stator before use. By energizing the inside, the copper coil wound on the stator will have a magnetic field. Since the stator is fixed, the magnetic field will drive the permanent magnet to rotate. When the permanent magnet rotates, the yoke will also be driven to rotate. When the yoke rotates, the linkage frame will also rotate synchronously, and the shaft will also rotate. During the rotation of the yoke, it may be affected by centrifugal force, causing the yoke to move outward away from its center point when rotating. At this time, the equipment may become unstable, or contact other equipment and cause damage. A shockproof mechanism is installed on the outer wall of the yoke. When the yoke is affected by centrifugal force, it will collide with the force plate and compress the reset spring. At this time, the yoke can be prevented from direct contact with the outside world, and the shockproof effect can be achieved, making the equipment safer. Since the essence of sound is the vibration of objects, the shockproof mechanism can also block the propagation of sound, making the noise smaller during the operation of the equipment. When the shockproof mechanism needs to be installed, the force plate needs to be overlapped on the outer surface of the yoke, and the shockproof shells on both sides need to be tightened. Then the shockproof mechanism can be fixed by clamping the clamping block with the clamping plate.
[0009] Furthermore, the support frame of the linkage frame is designed to be inclined, and the outer wall of the motor upper cover is provided with grid holes.
[0010] By adopting the above technical solution, a lot of heat will accumulate inside the equipment when it is running. When the heat is too high, it may cause damage to internal components. When the support frame of the linkage frame is designed to be inclined, the heat can be dissipated synchronously during the operation of the equipment, and the heat can be discharged through the grid holes opened on the outer wall of the motor cover, thereby reducing the heat accumulation inside the equipment.
[0011] Furthermore, an upper cover bearing is fixedly mounted on the inner wall of the upper cover of the motor, and the inner wall of the upper cover bearing is sleeved with the outer wall of the rotating shaft; a lower cover bearing is fixedly mounted on the inner wall of the lower shell of the motor, and the inner wall of the lower cover bearing is sleeved with the outer wall of the rotating shaft.
[0012] By adopting the above technical solution, when the equipment is in use, the upper cover of the motor and the lower shell of the motor cannot directly contact the rotating shaft, otherwise they may be driven by the rotating shaft and rotate together. When the upper cover bearing and the lower cover bearing are provided, the friction is reduced by the internal ball bearings, which can avoid affecting the upper cover of the motor and the lower shell of the motor when the rotating shaft rotates, and can also play a supporting role to keep the rotating shaft on the axis of the equipment.
[0013] Furthermore, the outer wall of the rotating shaft is provided with a through hole.
[0014] By adopting the above technical solution, when installing an external device, it can be fixed through the perforation, so that the external device can also run synchronously when the device is started.
[0015] Furthermore, a fixing frame is fixedly connected to the inner wall of the stator, and one side of the fixing frame is fixedly connected to the inner wall of the lower shell of the motor.
[0016] With the above technical solution, since the stator needs to be fixed when the equipment is running, the fixing frame needs to be connected to the lower shell of the motor to ensure that the stator will not rotate due to the influence of the magnetic field during operation.
[0017] Furthermore, a positioning plate is fixedly connected to one side of the motor lower shell, and a mounting hole is formed on an outer wall of the positioning plate.
[0018] By adopting the above technical solution, the device inevitably needs to be installed somewhere when in use. When the lower housing of the motor needs to be installed somewhere, it can be installed through the mounting holes on the positioning plate.
[0019] Furthermore, the inner wall of the motor upper cover is fixedly connected with a limit bayonet, the outer wall of the limit bayonet is rotatably connected to the inner wall of the yoke, and the inner wall of the motor lower shell is fixedly connected with a limit bayonet, and the outer wall of the limit bayonet is rotatably connected to the inner wall of the yoke.
[0020] By adopting the above technical solution, when the equipment is operating, the yoke will not only be subjected to centrifugal force, but also centripetal force, which will cause the yoke to produce acceleration relative to the center of the circle. The centripetal force of the yoke can be blocked by setting the limit stopper and the limiting stopper to prevent the yoke from contacting internal components.
[0021] Furthermore, a fixing block is fixedly connected to the outer wall of the motor upper cover, and a mounting hole is provided on the outer wall of the fixing block.
[0022] By adopting the above technical solution, the device can use the mounting hole to install the shell of the external device. By installing with the shell of the external device, the whole is safer, and the installation with the shell of the external device will not affect the normal operation of the external device.
[0023] The utility model has the following beneficial effects:
[0024] 1. The utility model may be affected by centrifugal force during the rotation of the yoke, causing the yoke to move outward away from its center point when rotating. At this time, it may cause the equipment to be unstable, or contact other equipment and cause damage. At this time, a shockproof mechanism is installed on the outer wall of the yoke. When the yoke is affected by the centrifugal force, it will collide with the force plate and compress the return spring of the force plate. At this time, the yoke can be prevented from directly contacting the outside world and a shockproof effect can be achieved. Since the essence of sound is the vibration of an object, the shockproof mechanism can also block the propagation of sound, so that the noise is smaller during the operation of the equipment.
[0025] 2. When the utility model is running, a lot of heat will accumulate inside the equipment. When the heat is too high, it may cause damage to the internal components. When the support frame of the linkage frame is designed to be inclined, the heat can be dissipated synchronously during the operation of the equipment, and the heat can be discharged through the grid holes opened on the outer wall of the motor cover, thereby reducing the heat accumulation inside the equipment.
[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the motor body of the utility model;
[0030] Figure 3 This is a schematic cross-sectional view of the main body of the motor of the utility model;
[0031] Figure 4 This is an exploded view of the main structure of the motor of the utility model;
[0032] Figure 5 This is a structural schematic diagram of the anti-vibration mechanism of the utility model;
[0033] Figure 6 This is a cross-sectional schematic diagram of the shockproof mechanism of the utility model;
[0034] Figure 7 For this utility model Figure 6 A partial enlarged schematic diagram in the middle.
[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0036] In the figure: 1. motor body; 11. rotating shaft; 12. motor upper cover; 13. upper cover bearing; 14. linkage frame; 15. permanent magnet; 16. stator; 17. lower cover bearing; 18. yoke; 19. motor lower shell; 2. shockproof mechanism; 21. shockproof shell; 22. hinge; 23. reset spring; 24. force plate; 25. clamping block; 26. clamping plate. DETAILED DESCRIPTION
[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0038] See also Figure 1-Figure 7 As shown, the utility model proposes an outer rotor motor, including a motor body 1, an outer wall of the motor body 1 is fixedly installed with a shockproof mechanism 2, the motor body 1 includes a motor upper cover 12, the inner wall of the motor upper cover 12 is rotatably connected with a rotating shaft 11, the outer wall of the rotating shaft 11 is fixedly connected with a linkage frame 14, the outer wall of the linkage frame 14 is fixedly connected with a yoke 18, one side of the yoke 18 is rotatably connected to one side of the motor upper cover 12, the other side of the yoke 18 is fixedly connected with a motor lower shell 19, the inner wall of the yoke 18 is provided with a groove, the inner wall of the groove is fixedly connected with a permanent magnet 15, and there are multiple groups of permanent magnets 15, and the inner wall of each group of permanent magnets 15 is rotatably connected with a stator 16;
[0039] The shockproof mechanism 2 includes a shockproof shell 21, and there are two groups of shockproof shells 21. The outer wall of each group of shockproof shells 21 is fixedly installed with a hinge 22. The outer wall of the hinge 22 is provided with a through hole, and the inner wall of the through hole is threaded with a fixing screw. The outer wall of each group of shockproof shells 21 is fixedly connected with a clamping block 25, and there are two groups of clamping blocks 25. The inner wall of one group of clamping blocks 25 is provided with a rotating hole, and the inner wall of the rotating hole is rotatably connected with a clamping plate 26, and the inner wall of the other group of clamping blocks 25 is provided with a clamping interface, and the inner wall of the clamping interface is clamped with the outer wall of the clamping plate 26, and the outer wall of the clamping plate 26 is fixedly connected with a hand grip block, and the inner wall of each group of shockproof shells 21 is fixedly connected with a reset spring 23, and there are multiple groups of reset springs 23. One end of each group of reset springs 23 is fixedly connected with a force plate 24, and the inner wall of the force plate 24 is rotatably connected to the outer wall of the yoke 18.
[0040] In this embodiment, a copper coil needs to be wound around the outer wall of the stator 16 before use, and by energizing the inside, the copper coil wound on the stator 16 will have a magnetic field, and because the stator 16 is fixed, the magnetic field will drive the permanent magnet 15 to rotate, and when the permanent magnet 15 rotates, it will also drive the yoke 18 to rotate, and when the yoke 18 rotates, the linkage frame 14 will also rotate synchronously, and the rotating shaft 11 will also rotate; during the rotation of the yoke 18, it may be affected by centrifugal force, causing the yoke 18 to move outward away from its center point when rotating, which may cause the device to be unstable, or contact other devices and cause damage. An anti-vibration mechanism 2 is installed on the outer wall of the yoke 18. When installing the anti-vibration mechanism 2, the force plate 24 needs to be overlapped on the outer surface of the yoke 18, and the anti-vibration shells 21 on both sides need to be tightened. Then, the anti-vibration mechanism 2 can be fixed by clamping the clamping block 25 with the clamping plate 26. When the yoke 18 is affected by the centrifugal force, it will collide with the force plate 24, and the force plate 24 will compress the reset spring 23. At this time, the yoke 18 can be prevented from directly contacting the outside world, and the anti-vibration effect can be achieved, making the equipment safer. Since the essence of sound is the vibration of objects, the anti-vibration mechanism 2 can also block the propagation of sound, so that the noise is smaller during the operation of the equipment.
[0041] Specifically, the support frame of the linkage frame 14 is designed to be inclined, and the outer wall of the motor upper cover 12 is provided with grid holes.
[0042] In this embodiment, a lot of heat will accumulate inside the equipment when it is running. When the heat is too high, it may cause damage to internal components. When the support frame of the linkage frame 14 is designed to be inclined, the heat can be dissipated synchronously during the operation of the equipment, and the heat can be discharged through the grid holes opened on the outer wall of the motor cover 12, thereby reducing the heat accumulation inside the equipment.
[0043] Specifically, an upper cover bearing 13 is fixedly mounted on the inner wall of the motor upper cover 12 , and the inner wall of the upper cover bearing 13 is sleeved with the outer wall of the rotating shaft 11 ; a lower cover bearing 17 is fixedly mounted on the inner wall of the motor lower shell 19 , and the inner wall of the lower cover bearing 17 is sleeved with the outer wall of the rotating shaft 11 .
[0044] In this embodiment, when the device is in use, the motor upper cover 12 and the motor lower shell 19 cannot directly contact the rotating shaft 11, otherwise they may be driven by the rotating shaft 11 and rotate together. When the upper cover bearing 13 and the lower cover bearing 17 are provided, the friction is reduced by the internal ball bearings, which can avoid affecting the motor upper cover 12 and the motor lower shell 19 when the rotating shaft 11 rotates, and can also play a supporting role to keep the rotating shaft 11 on the axis of the device.
[0045] Specifically, the outer wall of the rotating shaft 11 is provided with a through hole.
[0046] In this embodiment, when an external device is installed, it can be fixed through the perforation, so that the external device can also run synchronously when the device is started.
[0047] Specifically, a fixing frame is fixedly connected to the inner wall of the stator 16 , and one side of the fixing frame is fixedly connected to the inner wall of the motor lower shell 19 .
[0048] In this embodiment, since the stator 16 needs to be fixed when the device is running, the fixing frame needs to be connected to the motor lower shell 19 to ensure that the stator 16 will not rotate due to the influence of the magnetic field during operation.
[0049] Specifically, a positioning plate is fixedly connected to one side of the motor lower shell 19, and a mounting hole is formed on the outer wall of the positioning plate.
[0050] In this embodiment, the device inevitably needs to be installed somewhere when in use. When the motor lower shell 19 needs to be installed somewhere, it can be installed through the installation holes on the positioning plate.
[0051] Specifically, the inner wall of the motor upper cover 12 is fixedly connected with a limiting bayonet, the outer wall of the limiting bayonet is rotatably connected to the inner wall of the yoke 18, and the inner wall of the motor lower shell 19 is fixedly connected with a limiting bayonet, and the outer wall of the limiting bayonet is rotatably connected to the inner wall of the yoke 18.
[0052] In this embodiment, when the device is operating, the yoke 18 will not only be subjected to centrifugal force, but also centripetal force, which will cause the yoke 18 to generate acceleration relative to the center of the circle. The centripetal force of the yoke 18 can be blocked by the setting of the limit stopper and the limiting stopper to prevent the yoke 18 from contacting internal components.
[0053] Specifically, a fixing block is fixedly connected to the outer wall of the motor upper cover 12, and a mounting hole is provided on the outer wall of the fixing block.
[0054] In this embodiment, the device can use the mounting hole to install the housing of the external device. The installation with the housing of the external device makes the whole device safer, and the installation with the housing of the external device will not affect the normal operation of the external device.
[0055] When in use, first, before use, it is necessary to wind a copper coil on the outer wall of the stator 16, and by applying power to the inside, the copper coil wound on the stator 16 will have a magnetic field, and because the stator 16 is fixed, the magnetic field will drive the permanent magnet 15 to rotate, and when the permanent magnet 15 rotates, it will also drive the yoke 18 to rotate, and when the yoke 18 rotates, the linkage frame 14 will also rotate synchronously, and the rotating shaft 11 will also rotate.
[0056] Secondly, a lot of heat will accumulate inside the equipment when it is running. When the heat is too high, it may cause damage to internal components. When the support frame of the linkage frame 14 is designed to be inclined, the heat can be dissipated synchronously during the operation of the equipment, and the heat can be discharged through the grid holes opened on the outer wall of the motor cover 12, thereby reducing the heat accumulation inside the equipment.
[0057] Finally, during the rotation of the yoke 18, it may be affected by the centrifugal force, causing the yoke 18 to move outward away from its center point when rotating. At this time, the equipment may become unstable, or contact other equipment and cause damage. At this time, a shockproof mechanism 2 is installed on the outer wall of the yoke 18. When installing the shockproof mechanism 2, it is necessary to overlap the force plate 24 on the outer surface of the yoke 18, and tighten the shockproof shells 21 on both sides. Then, the shockproof mechanism 2 can be fixed by clamping the clamping block 25 with the clamping plate 26. When the yoke 18 is affected by the centrifugal force, it will collide with the force plate 24, and the force plate 24 will compress the reset spring 23. At this time, the yoke 18 can be prevented from directly contacting the outside world, and a shockproof effect can be achieved. Since the essence of sound is the vibration of objects, the shockproof mechanism 2 can also block the propagation of sound, so that the noise is smaller during the operation of the equipment.
[0058] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An outer rotor motor, comprising a motor body (1), characterized in that: The outer wall of the motor body (1) is fixedly mounted with a shockproof mechanism (2), the motor body (1) comprises a motor upper cover (12), the inner wall of the motor upper cover (12) is rotatably connected with a rotating shaft (11), the outer wall of the rotating shaft (11) is fixedly connected with a linkage frame (14), the outer wall of the linkage frame (14) is fixedly connected with a yoke (18), one side of the yoke (18) is rotatably connected with one side of the motor upper cover (12), the other side of the yoke (18) is fixedly connected with a motor lower shell (19), the inner wall of the yoke (18) is provided with a groove, the inner wall of the groove is fixedly connected with a permanent magnet (15), and there are multiple groups of permanent magnets (15), and the inner wall of each group of permanent magnets (15) is rotatably connected with a stator (16); The shockproof mechanism (2) comprises a shockproof housing (21), wherein the shockproof housing (21) has two groups, and the outer wall of the outer wall of each group of the shockproof housing (21) is fixedly mounted with a hinge (22), the outer wall of the hinge (22) is provided with a through hole, the inner wall of the through hole is threadedly connected with a fixing screw, and the outer wall of each group of the shockproof housing (21) is fixedly connected with a clamping block (25), and there are two groups of the clamping blocks (25), and the inner wall of one group of the clamping blocks (25) is provided with a rotating hole, and the inner wall of the rotating hole is rotatably connected to the outer wall of the hinge (22). There is a card plate (26), and the inner wall of another group of the card blocks (25) is provided with a card interface, the inner wall of the card interface is carded with the outer wall of the card plate (26), the outer wall of the outer wall of the card plate (26) is fixedly connected with a hand grip block, the inner wall of each group of the shockproof housing (21) is fixedly connected with a reset spring (23), and there are multiple groups of reset springs (23), one end of each group of the reset springs (23) is fixedly connected with a force plate (24), and the inner wall of the force plate (24) is rotatably connected with the outer wall of the yoke (18).
2. An outer rotor motor according to claim 1, characterized in that: The support frame of the linkage frame (14) is designed to be inclined, and the outer wall of the motor upper cover (12) is provided with grid holes.
3. The outer rotor motor according to claim 1, characterized in that: An upper cover bearing (13) is fixedly mounted on the inner wall of the motor upper cover (12), and the inner wall of the upper cover bearing (13) is sleeved with the outer wall of the rotating shaft (11); a lower cover bearing (17) is fixedly mounted on the inner wall of the motor lower shell (19), and the inner wall of the lower cover bearing (17) is sleeved with the outer wall of the rotating shaft (11).
4. The outer rotor motor according to claim 1, characterized in that: The outer wall of the rotating shaft (11) is provided with a through hole.
5. The outer rotor motor according to claim 1, characterized in that: A fixing frame is fixedly connected to the inner wall of the stator (16), and one side of the fixing frame is fixedly connected to the inner wall of the motor lower shell (19).
6. The outer rotor motor according to claim 1, characterized in that: A positioning plate is fixedly connected to one side of the motor lower shell (19), and a mounting hole is provided on the outer wall of the positioning plate.
7. The outer rotor motor according to claim 1, characterized in that: The inner wall of the motor upper cover (12) is fixedly connected to a limit bayonet, the outer wall of the limit bayonet is rotatably connected to the inner wall of the yoke (18), and the inner wall of the motor lower shell (19) is fixedly connected to a limit bayonet, the outer wall of the limit bayonet is rotatably connected to the inner wall of the yoke (18).
8. The outer rotor motor according to claim 1, characterized in that: A fixing block is fixedly connected to the outer wall of the motor upper cover (12), and a mounting hole is provided on the outer wall of the fixing block.