Sweeping vibration motor
By designing a winding frame and stator core structure with channels, slots and winding slots in the stator assembly of the sweeping motor, the outer winding of the coil is realized, solving the problems of low winding efficiency and low groove fullness, and improving production efficiency and motor performance.
Patent Information
- Application Number
- CN202510188666.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-03-21
AI Technical Summary
The internal structure of the existing stator of the sweeping motor limits the problems of low winding efficiency and low groove fullness.
A stator assembly including a winding frame and a stator core is designed, with a channel arranged in the middle of the winding frame, slots and winding grooves are arranged on both sides of the front and rear. The stator core has an interlocking section. Through these structures, the outer winding of the coil winding is realized, and the winding efficiency and groove fullness are improved.
The efficiency and quantity of coil winding are significantly improved through the outer winding method, and the overall production efficiency and motor performance are improved.
Smart Images
Figure CN119675308A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a motor, in particular to a sweeping vibration motor. Background Art
[0002] The sweeping vibration motor adjusts the vibration amplitude and frequency of the motor through servo control, which can achieve accurate and stable output, for example, it is used in electric toothbrushes. The stator inside the current sweeping vibration motor includes a yoke and a winding frame connected to both ends of the yoke. When winding, it is necessary to wind between the two winding frames. Due to this structural form, the winding needs to be done inside the yoke, which has low winding efficiency, and the number of coils wound inside is limited, and the slot fill rate is low. Therefore, there is an urgent need for a sweeping vibration motor that can improve winding efficiency and quality. Summary of the invention
[0003] The purpose of the present invention is to provide a sweeping vibration motor to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The solution of the present invention to solve its technical problem is: A sweeping vibration motor comprises: a casing; a stator assembly, comprising a winding frame and a stator core, a channel is arranged in the middle of the winding frame along the up-down direction, slots are arranged on the front and rear sides of the winding frame respectively, and the two slots are respectively connected to the channel, the left and right sides of the front part of the winding frame are respectively arranged with front winding slots, and the left and right sides of the rear part of the winding frame are respectively arranged with rear winding slots, coil windings are respectively wound between the two front winding slots and between the two rear winding slots, the stator core is connected to the casing, and the stator core has a plug-in section inserted into the two slots; a rotor assembly, which passes through the channel and is rotatably connected to the casing.
[0005] The technical solution has at least the following beneficial effects: in the stator assembly, the coil winding can be directly wound between the front winding slots on the left and right sides of the front part of the winding frame, and the coil winding can be directly wound between the rear winding slots on the left and right sides of the rear part of the winding frame. This is external winding, which greatly improves the efficiency of coil winding, and the number of coils can be wound more, improving the slot fill rate, and then the stator core and the winding frame are connected to each other, and the plug-in section of the stator core is inserted into the slot of the winding frame for positioning, so as to achieve rapid positioning of the two, and to conduct magnetization inside the coil winding, and then the entire stator assembly is installed in the casing, and the stator core is used to abut against the inner wall of the casing for positioning, and the rotor assembly passes through the channel and is rotatably connected to the casing, so as to rotate in the channel and output power outward. In this way, by changing the structure of the stator assembly, winding can be performed on the winding frame in an external winding manner, which greatly improves the winding efficiency and quantity, thereby improving the overall production efficiency and improving the performance of the entire motor.
[0006] As a further improvement of the above technical solution, the stator core includes a front frame and a rear frame connected to each other, the outer side walls of the front frame and the rear frame are respectively against the inner side wall of the housing, and the plug-in sections are respectively formed on the middle rear side of the front frame and the middle front side of the rear frame. When assembling the stator assembly, the coil winding is first wound on the winding frame, and then the front frame and the rear frame are connected to each other at the periphery of the stator core. In this process, the plug-in section located at the middle rear side of the front frame is inserted into the slot on the front side of the winding frame, and the plug-in section located at the middle front side of the rear frame is also inserted into the slot on the rear side of the winding frame to achieve mutual connection with the winding frame.
[0007] As a further improvement of the above technical solution, the front side of the winding frame is provided with a front limit groove, the two ends of the front limit groove respectively extend to the two front winding grooves, the front side of the front frame is embedded in the front limit groove, and the rear side of the winding frame is provided with a rear limit groove, the two ends of the rear limit groove respectively extend to the two rear winding grooves, and the rear side of the rear frame is embedded in the rear limit groove. When the front frame and the winding frame are connected to each other, the plug-in section on the rear side of the front frame is inserted into the slot on the front side of the winding frame, and the front frame and the winding frame are further approached, so that the front side of the front frame is embedded in the front limit groove, and similarly, when the rear frame and the winding frame are connected to each other, the plug-in section on the front side of the rear frame is inserted into the slot on the rear side of the winding frame, and the rear side of the rear frame is embedded in the rear limit groove, so that the connection between the front frame, the rear frame and the winding frame is tighter, so that the entire stator assembly structure is more stable and reliable, and the shaking generated in the casing is reduced.
[0008] As a further improvement of the above technical solution, the left rear side and the right rear side of the front frame are respectively provided with concave stoppers, the left front side and the right front side of the rear frame are respectively provided with convex stoppers, and the two convex stoppers are respectively matched and connected with the two concave stoppers. When the front frame and the rear frame are connected to each other, the concave stoppers on both sides of the front frame cooperate with the convex stoppers on both sides of the rear frame to further improve the tightness of the mutual connection position between the two, and ensure that the position where the front frame and the rear frame are connected to each other can be against the inner wall of the casing.
[0009] As a further improvement of the above technical solution, the winding frame is provided with limiting convex ribs at the front and rear sides of the end of the channel, the upper and lower ends of the front side of the winding frame protrude respectively to face the two limiting convex ribs, and the upper and lower ends of the rear side of the winding frame protrude respectively to face the two limiting convex ribs. At the end position of the winding frame, since the winding frame is provided with limiting convex ribs at the front and rear sides of the end of the channel, and the front and rear sides of the winding frame protrude respectively to face the two limiting convex ribs, a front and rear limiting structure can be formed at the end positions of the two coil windings, so that the coil windings at the upper and lower ends can be limited and shielded, and the coil windings can be protected, thereby improving the structural stability of the stator assembly.
[0010] As a further improvement of the above technical solution, one end of the winding frame is located beside the front winding groove and the rear winding groove and is respectively formed with a winding hook, and the two winding hooks extend in a direction away from the channel. When the wires of the two coil windings need to be led out, the wires led out of the two coil windings can bypass the winding hooks, and the winding hooks are used to position the wires, so that there is no need to glue and fix the led wires, thereby improving the efficiency and convenience of the overall production.
[0011] As a further improvement of the above technical solution, the rotor assembly includes a rotating shaft and a magnet connected to the outside of the rotating shaft, and the two ends of the rotating shaft are respectively rotatably connected to the two sides of the housing. The rotating shaft is rotatably connected to the housing for outputting power outward, and the magnet located on the outside of the rotating shaft interacts with the winding coil, thereby driving the rotating shaft to swing back and forth.
[0012] As a further improvement of the above technical solution, a positioning groove is formed on the outer side of the rotating shaft, and the positioning groove extends along the axial direction of the rotating shaft. There are four positioning grooves evenly arranged along the outer circumference of the rotating shaft, and the four magnets are respectively connected to the four positioning grooves, and the two magnets located on both sides of the coil winding have opposite magnetic properties. When the two coil windings are energized, an electromagnetic field with opposite magnetic properties will be generated on the plug-in sections located in the two slots, and the magnets located on both sides of each coil winding have opposite magnetic properties, so that the two magnets drive the rotating shaft to rotate. By changing the direction of the current supplied to the coil winding, the swing direction of the rotating shaft can be controlled, thereby realizing the power of outputting reciprocating vibration.
[0013] As a further improvement of the above technical solution, the housing includes an outer shell and an end cover, the outer shell is surrounded by a cavity with an opening upward, the end cover is connected to the rear side of the outer shell and covers the cavity, the stator core is located in the outer shell, and the shaft is rotatably connected to the front side of the outer shell and the end cover respectively. The outer shell forms a cavity for storage, after the stator assembly and the rotor assembly are installed in the outer shell, the end cover is connected to the cavity opening position of the outer shell to seal the inside of the cavity, and the shaft and the end cover are rotatably connected to each other.
[0014] As a further improvement of the above technical solution, the end cover is provided with a stop groove at the end position of the rotating shaft, and the end of the rotating shaft is formed with a stop section inserted into the stop groove, and the stop groove can limit the stop section from rotating 180 degrees. A stop groove is provided in the end cover to limit excessive rotation of the rotating shaft. When the rotating shaft rotates beyond a certain angle, the stop section at the end of the rotating shaft abuts against the inner side wall of the stop groove, thereby generating a limiting effect and ensuring that the rotating shaft can achieve reciprocating rotation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.
[0016] Figure 1 It is an overall exploded view of the present invention.
[0017] Figure 2 It is a three-dimensional view of a winding frame of the present invention.
[0018] Figure 3 It is a stereoscopic diagram of the stator assembly and the rotor assembly of the present invention being assembled with each other.
[0019] Figure 4 It is an overall front view of the present invention.
[0020] Figure 5 yes Figure 4 Schematic diagram of the AA cross-section structure.
[0021] In the accompanying drawings: 1-casing, 11-outer shell, 12-end cover, 121-stop groove, 21-winding frame, 211-channel, 212-slot, 213-front winding groove, 214-rear winding groove, 215-front limiting groove, 216-rear limiting groove, 217-limiting rib, 218-winding hook, 221-plug-in section, 222-front frame, 223-rear frame, 224-concave stop, 225-convex stop, 23-coil winding, 31-rotating shaft, 311-stop section, 32-magnet. DETAILED DESCRIPTION
[0022] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.
[0023] Reference Figures 1 to 5A sweeping vibration motor comprises: a casing 1; a stator assembly, comprising a winding frame 21 and a stator core, a channel 211 is provided in the middle of the winding frame 21 along the up-down direction, slots 212 are provided on the front and rear sides of the winding frame 21, and the two slots 212 are respectively connected to the channel 211, front winding slots 213 are provided on the left and right sides of the front part of the winding frame 21, and rear winding slots 214 are provided on the left and right sides of the rear part of the winding frame 21, and coil windings 23 are respectively wound between the two front winding slots 213 and between the two rear winding slots 214, and the stator core is connected to the casing 1, and the stator core has an inserting section 221 inserted into the two slots 212; a rotor assembly, which passes through the channel 211 and is rotatably connected to the casing 1.
[0024] When assembling the sweep vibration motor, for the stator assembly, the coil winding 23 can be directly wound between the front winding slots 213 on the left and right sides of the front part of the winding frame 21, and the coil winding 23 can be directly wound between the rear winding slots 214 on the left and right sides of the rear part of the winding frame 21. At this time, it is external winding, which greatly improves the efficiency of coil winding, and the number of coils can be wound more, improving the slot full rate, and then the stator core and the winding frame 21 are connected to each other, and the plug-in section 221 of the stator core is inserted into the slot 212 of the winding frame 21 for positioning, so as to realize the two The rotor assembly passes through the channel 211 and is rotatably connected to the housing 1, thereby rotating in the channel 211 and outputting power outward. By changing the structure of the stator assembly, the winding can be performed on the winding frame 21 in an external winding manner, which greatly improves the winding efficiency and quantity, thereby improving the overall production efficiency and improving the performance of the entire motor.
[0025] The stator core can be assembled on the outside of the winding frame 21 through a split structure. Specifically, the stator core includes a front frame 222 and a rear frame 223 connected to each other. The outer side walls of the front frame 222 and the rear frame 223 are respectively against the inner side wall of the housing 1. The plug-in section 221 is formed on the middle rear side of the front frame 222 and the middle front side of the rear frame 223. When assembling the stator assembly, the coil winding 23 is first wound on the winding frame 21, and then the front frame 222 and the rear frame 223 are connected to each other at the periphery of the stator core. In this process, the plug-in section 221 located at the middle rear side of the front frame 222 is inserted into the slot 212 on the front side of the winding frame 21, and the plug-in section 221 located at the middle front side of the rear frame 223 is also inserted into the slot 212 on the rear side of the winding frame 21, so as to achieve mutual connection with the winding frame 21.
[0026] In order to improve the tightness of the assembly connection between the winding frame 21 and the stator core, in the present embodiment, a front limit groove 215 is provided on the front side of the winding frame 21, and the two ends of the front limit groove 215 extend to the two front winding grooves 213 respectively, and the front side of the front frame 222 is embedded in the front limit groove 215; a rear limit groove 216 is provided on the rear side of the winding frame 21, and the two ends of the rear limit groove 216 extend to the two rear winding grooves 214 respectively, and the rear side of the rear frame 223 is embedded in the rear limit groove 216. When the front frame 222 and the winding frame 21 are connected to each other, the plug-in section 221 on the rear side of the front frame 222 is inserted into the slot 212 on the front side of the winding frame 21, and the front frame 222 and the winding frame 21 are further approached, so that the front side of the front frame 222 is embedded in the front limit groove 215. Similarly, when the rear frame 223 and the winding frame 21 are connected to each other, the plug-in section 221 on the front side of the rear frame 223 is inserted into the slot 212 on the rear side of the winding frame 21, and the rear side of the rear frame 223 is embedded in the rear limit groove 216. In this way, the connection between the front frame 222, the rear frame 223 and the winding frame 21 is tighter, making the entire stator assembly structure more stable and reliable, and reducing the shaking generated in the casing 1.
[0027] Furthermore, the left rear side and the right rear side of the front frame 222 are respectively provided with concave stoppers 224, and the left front side and the right front side of the rear frame 223 are respectively provided with convex stoppers 225, and the two convex stoppers 225 are respectively matched and connected with the two concave stoppers 224. When the front frame 222 and the rear frame 223 are connected to each other, the concave stoppers 224 on both sides of the front frame 222 and the convex stoppers 225 on both sides of the rear frame 223 are used to further improve the tightness of the mutual connection position between the two, and ensure that the position where the front frame 222 and the rear frame 223 are connected to each other can be against the inner wall of the housing 1.
[0028] In order to better limit the winding coil, in this embodiment, the winding frame 21 is provided with limiting convex ribs 217 at the front and rear sides of the end of the channel 211, and the upper and lower ends of the front side of the winding frame 21 protrude to face the two limiting convex ribs 217, and the upper and lower ends of the rear side of the winding frame 21 protrude to face the two limiting convex ribs 217. At the end position of the winding frame 21, since the winding frame 21 is provided with limiting convex ribs 217 at the front and rear sides of the end of the channel 211, and the front and rear sides of the winding frame 21 protrude to face the two limiting convex ribs 217, a front and rear limiting structure can be formed at the end positions of the two coil windings 23, so that the coil windings 23 at the upper and lower ends can be limited and shielded, and the coil windings 23 can be protected, thereby improving the structural stability of the stator assembly.
[0029] When the wires on the coil windings 23 need to be led out, they are currently fixed by connecting atomic wires or applying glue, which is rather troublesome. Therefore, in this embodiment, one end of the winding frame 21 is located beside the front winding groove 213 and the rear winding groove 214 and is respectively formed with winding hooks 218, and the two winding hooks 218 extend in a direction away from the channel 211. When the wires of the two coil windings 23 need to be led out, the wires led out of the two coil windings 23 can bypass the winding hooks 218, and the winding hooks 218 are used to position the wires, so that there is no need to fix the led wires with glue, thereby improving the efficiency and convenience of the overall production.
[0030] As a specific structural embodiment of the rotor assembly, the rotor assembly includes a rotating shaft 31, a magnet 32 connected to the outside of the rotating shaft 31, and both ends of the rotating shaft 31 are respectively rotatably connected to the two sides of the housing 1. The rotating shaft 31 is rotatably connected to the housing 1 for outputting power outward, and the magnet 32 located on the outside of the rotating shaft 31 interacts with the winding coil, thereby driving the rotating shaft 31 to swing back and forth.
[0031] Furthermore, a positioning groove is formed on the outer side of the rotating shaft 31, and the positioning groove extends along the axial direction of the rotating shaft 31. There are four positioning grooves evenly arranged along the outer periphery of the rotating shaft 31. The four magnets 32 are respectively connected to the four positioning grooves. The two magnets 32 located on both sides of the coil winding 23 have opposite magnetic properties. In practical applications, a sleeve can be fixed on the outer side of the rotating shaft 31, and the positioning groove is formed on the outer side of the sleeve. At this time, the four magnets 32 are respectively fixed in the four positioning grooves by gluing. When the two coil windings 23 are energized, an electromagnetic field with opposite magnetic properties will be generated for the plug-in sections 221 located in the two slots 212, and the magnets 32 located on both sides of each coil winding 23 have opposite magnetic properties, so that the two magnets 32 drive the rotating shaft 31 to rotate. By changing the direction of the current supplied to the coil winding, the swing direction of the rotating shaft 31 can be controlled, thereby realizing the power of outputting reciprocating vibration.
[0032] As a specific embodiment of the structure of the housing 1, the housing 1 includes an outer shell 11 and an end cover 12. The outer shell 11 is enclosed with a cavity opening upward. The end cover 12 is connected to the rear side of the outer shell 11 and covers the cavity. The stator core is located in the outer shell 11. The shaft 31 is rotatably connected to the front side of the outer shell 11 and the end cover 12. The outer shell 11 forms a cavity for storage. After the stator assembly and the rotor assembly are installed in the outer shell, the end cover 12 is connected to the cavity opening position of the outer shell 11 to seal the inside of the cavity, and the shaft 31 and the end cover 12 are rotatably connected to each other.
[0033] In order to prevent the shaft 31 from excessively rotating, in this embodiment, the end cover 12 is provided with a stop groove 121 at the end position of the shaft 31, and the end of the shaft 31 is formed with a stop segment 311 inserted into the stop groove 121, and the stop groove 121 can limit the stop segment 311 to rotate 180 degrees. In practical applications, milling positions can be processed on both sides of the end of the shaft 31, and this part is the stop segment 311, and the positions facing the two milling positions in the stop groove 121 are respectively set as planes. When the milling position of the shaft 31 rotates to abut against the plane in the stop groove 121, the rotation of the shaft 31 can be limited. The stop groove 121 that can limit the excessive rotation of the shaft 31 is provided in the end cover 12. When the shaft 31 rotates beyond a certain angle, the stop segment 311 at the end of the shaft 31 abuts against the inner wall of the stop groove 121, thereby producing a limiting effect to ensure that the shaft 31 can achieve reciprocating rotation.
[0034] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A sweeping vibration motor, characterized in that: include: Housing (1); A stator assembly, comprising a winding frame (21) and a stator core, wherein a channel (211) is provided in the middle of the winding frame (21) along the up-down direction, slots (212) are provided on the front and rear sides of the winding frame (21), and the two slots (212) are respectively connected to the channel (211), front winding slots (213) are provided on the left and right sides of the front part of the winding frame (21), and rear winding slots (214) are provided on the left and right sides of the rear part of the winding frame (21), and coil windings (23) are respectively wound between the two front winding slots (213) and between the two rear winding slots (214), and the stator core is connected to the housing (1), and the stator core has a plug-in section (221) inserted into the two slots (212); A rotor assembly passes through the channel (211) and is rotatably connected to the casing (1).
2. A sweeping vibration motor according to claim 1, characterized in that: The stator core comprises a front frame (222) and a rear frame (223) which are connected to each other, the outer side walls of the front frame (222) and the rear side walls of the rear frame (223) respectively abut against the inner side walls of the casing (1), and the plug-in section (221) is formed at the middle rear side of the front frame (222) and the middle front side of the rear frame (223).
3. A sweeping vibration motor according to claim 2, characterized in that: The front side of the winding frame (21) is provided with a front limiting groove (215), the two ends of the front limiting groove (215) respectively extend to the two front winding grooves (213), and the front side of the front frame (222) is embedded in the front limiting groove (215); the rear side of the winding frame (21) is provided with a rear limiting groove (216), the two ends of the rear limiting groove (216) respectively extend to the two rear winding grooves (214), and the rear side of the rear frame (223) is embedded in the rear limiting groove (216).
4. A sweeping vibration motor according to claim 2, characterized in that: The left rear side and the right rear side of the front frame (222) are respectively provided with concave stoppers (224), and the left front side and the right front side of the rear frame (223) are respectively provided with convex stoppers (225), and the two convex stoppers (225) are respectively matched and connected with the two concave stoppers (224).
5. The sweeping vibration motor according to claim 1, characterized in that: The winding frame (21) is provided with limiting convex ribs (217) at the front and rear sides of the end of the channel (211), respectively; the upper and lower ends of the front side of the winding frame (21) respectively protrude to face the two limiting convex ribs (217); and the upper and lower ends of the rear side of the winding frame (21) respectively protrude to face the two limiting convex ribs (217).
6. The sweeping vibration motor according to claim 1, characterized in that: One end of the winding frame (21) is located beside the front winding groove (213) and the rear winding groove (214), and winding hooks (218) are formed thereon respectively. The two winding hooks (218) extend in a direction away from the channel (211).
7. The sweeping vibration motor according to claim 1, characterized in that: The rotor assembly comprises a rotating shaft (31) and a magnet (32) connected to the outside of the rotating shaft (31); two ends of the rotating shaft (31) are respectively rotatably connected to two sides of the housing (1).
8. The sweeping vibration motor according to claim 7, characterized in that: A positioning groove is formed on the outer side of the rotating shaft (31), the positioning groove extending along the axial direction of the rotating shaft (31), four positioning grooves are evenly arranged along the outer circumference of the rotating shaft (31), the four magnets (32) are respectively connected to the four positioning grooves, and the two magnets (32) located on both sides of the coil winding (23) have opposite magnetic properties.
9. The sweeping vibration motor according to claim 7, characterized in that: The casing (1) comprises an outer shell (11) and an end cover (12); a cavity with an opening facing upward is formed in the outer shell (11); the end cover (12) is connected to the rear side of the outer shell (11) and covers the cavity; the stator core is located in the outer shell (11); and the rotating shaft (31) is rotatably connected to the front side of the outer shell (11) and the end cover (12), respectively.
10. The sweeping vibration motor according to claim 9, characterized in that: The end cover (12) is provided with a rotation-stop groove (121) at an end position directly opposite to the rotating shaft (31), and the end of the rotating shaft (31) is formed with a rotation-stop segment (311) inserted into the rotation-stop groove (121), and the rotation-stop groove (121) can limit the rotation of the rotation-stop segment (311) by 180 degrees.