An electric clipper motor

Abstract

The utility model discloses a kind of electric clippers motor, it is related to motor design field, including stator and rotor;The stator includes locating seat and iron core, iron core is fixedly installed on locating seat, rotor includes rotary cover and shaft core, shaft core is fixedly installed at the center of rotary cover, locating cylinder is shaped in the middle part of locating seat, bearing groove is shaped in the upper and lower ends in locating cylinder, ball bearing is cooperatively installed between bearing groove and shaft core;The outer ring of ball bearing of bottom side and the bearing groove between bottom side are installed with silica gel gasket and abut;Shaft core is formed with glue storage groove, and glue storage groove is arranged in the inner ring of ball bearing;Compared with prior art, the utility model absorbs excess glue through glue storage groove, increases cementing stress, and also prevents glue overflow;Silica gel gasket replaces traditional wave form meson, the pre-pressure of ball bearing is kept uniform by pressing, reduces noise, guarantees service life, does not appear the condition of virtual position installation, and also can avoid motor from happening to move.

Description

Technical Field

[0001] This utility model relates to the field of motor design, and in particular to an electric clipper motor. Background Technology

[0002] A brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. Because brushless DC motors operate under self-control, they do not require an additional starting winding on the rotor like synchronous motors that start under heavy loads with frequency conversion speed regulation, nor do they experience oscillations or loss of synchronization during sudden load changes. In the field of electric clipper motor design, brushless motors are currently the most widely used in the industry. Figure 9 As shown, the conventional design of this motor has the following defects: 1. The shaft core 2.2 and the ball bearing 5 are fixed by an adhesive application process. If the amount of adhesive applied is not precise, excess adhesive may overflow from the surface of the shaft core 2.2 and then enter the interior of the ball bearing 5, causing abnormal noise when the ball bearing 5 rotates and affecting its service life.

[0003] 2. Generally, the ball bearing 5 is positioned and installed using a wave-shaped spacer 24. The wave-shaped spacer 24 forms a three-point preload by having three bosses of the wave structure contact the ball surface of the ball bearing 5. However, uneven preload can easily occur, affecting the rotation of the ball bearing 5, causing abnormal noise and reducing its service life. In addition, the wave-shaped spacer 24 is prone to misalignment during assembly, resulting in misalignment of the ball bearing 5, causing the motor to move erratically and make abnormal noise when running. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0005] An electric clipper motor includes a stator and a mover; The stator includes a positioning seat and an iron core, with the iron core fixedly installed on the positioning seat. The mover includes a rotating cover and a shaft core, with the shaft core fixedly installed at the center of the rotating cover. A positioning cylinder is formed in the middle of the positioning seat, and bearing grooves are formed at both the upper and lower ends of the positioning cylinder. Ball bearings are fitted between the bearing grooves and the shaft core. A silicone gasket is installed between the outer ring of the ball bearing on the bottom side and the bearing groove on the bottom side. The shaft core is formed with a glue reservoir, which is located in the inner ring of the ball bearing.

[0006] Furthermore, the stator also includes a drive plate and a copper wire winding. The copper wire winding is wound and mounted on the iron core, and the drive plate is fixedly mounted on the positioning seat. The copper wire winding and the drive plate are electrically connected to each other.

[0007] Furthermore: the positioning base is integrally formed with four positioning pins, and the four ends of the drive plate are all formed with pin holes, and the positioning pins are inserted into the pin holes with a gap fit.

[0008] Furthermore, the moving element also includes a permanent magnet ring, which is fixedly installed on the inner wall of the rotating cover, and the iron core is disposed in the permanent magnet ring with a clearance fit.

[0009] Furthermore: a limiting groove is formed on the shaft core, and a limiting snap ring is installed in the limiting groove. The limiting snap ring is snapped and installed below the bottom ball bearing, and the limiting snap ring abuts against the inner ring of the bottom ball bearing.

[0010] Furthermore, a rubber ring is provided on the upper side of the ball bearing on the top side. The rubber ring is installed between the inner ring of the ball bearing on the top side and the rotating cover, and the rubber ring is sleeved on the shaft core.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. Adding a glue reservoir to the shaft core allows the glue reservoir to effectively absorb excess glue during the glue application process. The absorbed glue also increases the contact area between the shaft core and the inner ring of the ball bearing, increasing the adhesion stress between the shaft core and the ball bearing. This makes it less likely for the product to loosen or fall off, and also effectively avoids excessive noise from the ball bearing, ensuring its service life. 2. Replace the traditional wave-shaped separator with a silicone gasket. Because the silicone gasket is an elastic planar body, it can effectively press against the outer ring of the ball bearing, and the preload of the silicone gasket can be kept uniform, making the ball bearing run more smoothly, reducing noise during operation, and extending its service life. 3. The silicone gasket is easy to assemble, has good elasticity, and is not prone to misalignment during installation, thus avoiding noise caused by motor swerving.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1A schematic diagram of a half-section structure; Figure 3 This is a schematic diagram of the main structure of this utility model; Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 This is an exploded structural diagram of the present invention; Figure 6 yes Figure 5 Front view structural diagram; Figure 7 This is a schematic diagram of the exploded structure of this utility model in a semi-sectional state; Figure 8 yes Figure 7 Front view structural diagram; Figure 9 This is a cross-sectional structural diagram of a brushless motor in existing electric clippers.

[0015] The figure shows: 1. Stator; 1.1. Positioning seat; 1.2. Iron core; 1.3. Drive plate; 1.4. Copper wire winding; 2. Mover; 2.1. Rotating cover; 2.2. Shaft core; 2.3. Permanent magnet ring; 3. Positioning cylinder; 4. Bearing groove; 5. Ball bearing; 6. Silicone gasket; 7. Glue storage tank; 8. Positioning pin; 9. Pin hole; 10. Stepped groove; 11. First mounting hole; 12. Second mounting hole; 13. Snap-fit ​​edge; 14. Beveled edge; 15. Limiting edge; 16. Vertical groove; 17. Screw mounting hole; 18. Limiting groove; 19. Limiting snap ring; 20. Rubber ring; 21. Reinforcing ring; 22. Conical cylinder; 23. Reinforcing edge; 24. Waveform separator. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0017] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1-9 As shown, the electric clipper motor of this utility model includes a stator 1 and a mover 2; The stator 1 includes a positioning seat 1.1 and an iron core 1.2. The iron core 1.2 is fixedly installed on the positioning seat 1.1. The mover 2 includes a rotating cover 2.1 and a shaft core 2.2. The shaft core 2.2 is fixedly installed at the center of the rotating cover 2.1. A positioning cylinder 3 is formed in the middle of the positioning seat 1.1. Bearing grooves 4 are formed at both the upper and lower ends of the positioning cylinder 3. A ball bearing 5 is fitted between the bearing groove 4 and the shaft core 2.2. A silicone gasket 6 is installed between the outer ring of the ball bearing 5 on the bottom side and the bearing groove 4 on the bottom side. A glue storage groove 7 is formed on the shaft core 2.2, and the glue storage groove 7 is located in the inner ring of the ball bearing 5.

[0022] The principle is as follows: A glue reservoir 7 is added to the shaft core 2.2. During the glue application process, the reservoir 7 effectively absorbs excess glue. Simultaneously, the absorbed glue increases the contact area between the shaft core 2.2 and the inner ring of the ball bearing 5, increasing the adhesive stress between them and preventing loosening or detachment. This also effectively avoids excessive noise from the ball bearing 5, ensuring its service life. Furthermore, a silicone gasket 6 replaces the traditional wave-shaped insert 24. Because the silicone gasket 6 is an elastic planar body, it effectively holds the outer ring of the ball bearing 5, and the pre-pressure applied to the ball bearing 5 remains uniform, resulting in smoother operation of the ball bearing 5, reduced noise during operation, and extended service life. Moreover, the silicone gasket 6 is easy to assemble, has good elasticity, and is less prone to misalignment, preventing noise generated by motor erratic movement.

[0023] Furthermore, the adhesive storage groove 7 on the shaft core 2.2 is provided with at least two; it can effectively store excess adhesive, increase the bonding contact surface, ensure the stable assembly of the ball bearing 5, and at the same time prevent adhesive from overflowing.

[0024] Furthermore, the stator 1 also includes a drive plate 1.3 and a copper wire winding 1.4. The copper wire winding 1.4 is wound and installed on the iron core 1.2, and the drive plate 1.3 is fixedly installed on the positioning seat 1.1. The copper wire winding 1.4 and the drive plate 1.3 are electrically connected to each other. The drive plate 1.3 can control the power supply direction of the copper wire winding 1.4, thereby changing the direction of the magnetic field when energized, so as to realize the high-speed operation of the brushless motor mover 2.

[0025] Furthermore, the positioning base 1.1 is integrally formed with four positioning pins 8, and the four ends of the drive plate 1.3 are all formed with pin holes 9. The positioning pins 8 are inserted into the pin holes 9 with a one-to-one gap fit; making the installation of the drive plate 1.3 on the positioning base 1.1 more stable.

[0026] Furthermore: the outer side of the positioning cylinder 3 is formed with at least two stepped grooves 10, the middle part of the drive plate 1.3 is formed with a first mounting hole 11, the first mounting hole 11 is fitted with the stepped groove 10 on the bottom side with clearance fit, and the middle part of the iron core 1.2 is formed with a second mounting hole 12, the second mounting hole 12 is fitted with the stepped groove 10 on the top side with clearance fit; making the assembly of the drive plate 1.3 and the iron core 1.2 on the positioning seat 1.1 more stable.

[0027] Furthermore, a plurality of snap-fit ​​edges 13 are formed on the stepped groove 10 on the bottom side, and the snap-fit ​​edges 13 snap the drive plate 1.3 into the stepped groove 10 on the bottom side; the drive plate 1.3 can be quickly assembled by snapping.

[0028] Furthermore, the outer side of the positioning cylinder 3 is formed with several inclined sides 14, which are narrower at the top and wider at the bottom, and the several inclined sides 14 are arranged in a circular array. The second mounting hole 12 of the iron core 1.2 is tightly fitted into the stepped groove 10 on the top side of the positioning cylinder 3 through the several inclined sides 14. This makes the installation of the iron core 1.2 more stable, and after the iron core 1.2 is pressed, it can form a tight fit with the outer wall of the positioning cylinder 3, realizing rapid assembly.

[0029] Furthermore: the outer side of the positioning cylinder 3 is formed with a limiting edge 15, and the second mounting hole 12 is formed with a vertical groove 16. The limiting edge 15 is inserted into the vertical groove 16 with a clearance fit; so that the limiting edge 15 is stuck in the vertical groove 16, the installation angle of the iron core 1.2 is guaranteed, and there will be no situation of self-rotation after installation, thus ensuring its service life.

[0030] Furthermore, screw mounting holes 17 are formed on both the left and right ends of the bottom side of the positioning seat 1.1, which facilitates the installation and use of the motor.

[0031] Furthermore, the mover 2 also includes a permanent magnet ring 2.3, which is fixedly installed on the inner wall of the rotating cover 2.1. The iron core 1.2 is fitted into the permanent magnet ring 2.3 with a clearance fit. The magnetic field of the permanent magnet ring 2.3 will match the magnetic field formed on the iron core 1.2 when the copper wire winding 1.4 is energized, thereby driving the entire mover 2 to rotate at high speed, achieving the technical effect of brushless drive.

[0032] Furthermore, the iron core 1.2 is a riveted iron core; the riveting process ensures the strength and service life of the iron core 1.2.

[0033] Preferably, the iron core 1.2 is a 0.2mm thick riveted iron core; the entire iron core 1.2 structure is formed by riveting 0.2mm single iron core pieces, which can replace the traditional 0.35mm thick single iron core, thereby improving the working efficiency of the motor, reducing the current, reducing the temperature rise, and increasing the battery life.

[0034] Furthermore, a limiting groove 18 is formed on the shaft core 2.2, and a limiting snap ring 19 is installed in the limiting groove 18. The limiting snap ring 19 is snapped and installed below the bottom ball bearing 5, and the limiting snap ring 19 abuts against the inner ring of the bottom ball bearing 5. This enables the rapid assembly of the motor, ensures the installation and limiting of the ball bearing 5, and results in higher stability after assembly.

[0035] Furthermore: A rubber ring 20 is provided on the upper side of the ball bearing 5 on the top side. The rubber ring 20 is installed between the inner ring of the ball bearing 5 on the top side and the rotating cover 2.1, and the rubber ring 20 is sleeved on the shaft core 2.2. The rubber ring 20 has a certain elasticity and can stably press the inner ring of the top ball bearing 5 to achieve stable assembly.

[0036] Furthermore, a reinforcing ring 21 is integrally formed at the center of the rotating cover 2.1, and the shaft core 2.2 is fixedly installed in the reinforcing ring 21; this makes the assembly of the shaft core 2.2 more stable, less prone to loosening, and ensures the stability of the motor when it runs at high speed.

[0037] Furthermore, a tapered cylinder 22, wider at the top and narrower at the bottom, is integrally formed between the reinforcing ring 21 and the rotating cover 2.1; this enhances the structural stability of the reinforcing ring 21, ensures stable assembly of the shaft core 2.2, and improves its service life.

[0038] Furthermore, a reinforcing edge 23 is formed at the bottom edge of the rotating cover 2.1, which can enhance the strength of the rotating cover 2.1 itself.

[0039] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. An electric clipper motor, comprising a stator and a mover; characterized in that: The stator includes a positioning seat and an iron core, with the iron core fixedly installed on the positioning seat. The mover includes a rotating cover and a shaft core, with the shaft core fixedly installed at the center of the rotating cover. A positioning cylinder is formed in the middle of the positioning seat, and bearing grooves are formed at both the upper and lower ends of the positioning cylinder. Ball bearings are fitted between the bearing grooves and the shaft core. A silicone gasket is installed between the outer ring of the ball bearing on the bottom side and the bearing groove on the bottom side. The shaft core is formed with a glue reservoir, which is located in the inner ring of the ball bearing.

2. The electric clipper motor according to claim 1, characterized in that: The stator also includes a drive plate and a copper wire winding. The copper wire winding is wound and installed on the iron core, and the drive plate is fixedly installed on the positioning seat. The copper wire winding and the drive plate are electrically connected to each other.

3. The electric clipper motor according to claim 2, characterized in that: The positioning base is integrally formed with four positioning pins, and the four ends of the drive plate are all formed with pin holes. The positioning pins are inserted into the pin holes with a gap fit.

4. An electric clipper motor according to any one of claims 1 or 2, characterized in that: The moving element also includes a permanent magnet ring, which is fixedly installed on the inner wall of the rotating cover, and the iron core is disposed in the permanent magnet ring with a clearance fit.

5. The electric clipper motor according to claim 1, characterized in that: The shaft core is formed with a limiting groove, and a limiting snap ring is installed in the limiting groove. The limiting snap ring is snapped and installed below the bottom ball bearing, and the limiting snap ring is set to abut against the inner ring of the bottom ball bearing.

6. An electric clipper motor according to any one of claims 1 or 5, characterized in that: A rubber ring is provided on the upper side of the ball bearing on the top side. The rubber ring is installed between the inner ring of the ball bearing on the top side and the rotating cover, and the rubber ring is sleeved on the shaft core.

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