Horizontal double-speed adjustment motor stator assembly

Abstract

The utility model relates to the technical field of double-speed adjusting motors, and discloses a horizontal double-speed adjusting motor stator assembly, which comprises a casing, a convex plate integrally connected with the top end of the casing and used for connecting a motor casing, a plurality of eccentric magnetic shoes annularly arranged on the inner wall of the casing, and a clamping unit arranged between every two eccentric magnetic shoes, the bottom of the machine shell is integrally connected with a connecting groove. According to the utility model, the plurality of eccentric magnetic shoes are annularly arranged in the casing, and the magnetic cores of the plurality of eccentric magnetic shoes are not concentric, so that the rotor can generate a certain centrifugal force during rotation, thereby balancing the deviation of the main shaft during rotation, and being beneficial to improving the stability and accuracy of the motor; and the rear pressure ball bearing unit is arranged at the bottom of the casing, so that the stator assembly not only can ensure low noise of the motor, but also can prevent the main shaft of the motor rotor assembly from deviating in the rotating process under the action of the special structure of the pressure ball bearing unit.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-speed adjustment motors, in particular to a horizontal dual-speed adjustment motor stator assembly. Background Art

[0002] With urbanization and sustainable development, electric vehicles have broad development prospects compared to fuel vehicles due to their advantages of low emissions and environmental protection. In order to achieve the power performance of traditional fuel vehicles such as short-term acceleration, high torque, and high-speed driving, electric vehicles must be equipped with high-power motors. However, when driving in poor road conditions such as urban traffic jams and low-grade roads, the vehicle speed cannot be increased. The high-power motor has low efficiency during operation and inevitably wastes energy, affecting the superiority of pure electric vehicles in energy conservation and environmental protection. It is difficult to strike a balance between excellent power performance and energy conservation and environmental protection. Therefore, dual-speed adjustment motors are used in pure electric vehicles.

[0003] The dual-speed adjustable motor is a technology that achieves speed regulation by changing the number of poles of the motor. Its basic principle is to use the relationship between the number of poles and the speed of the motor to change the number of poles of the motor, thereby changing the speed of the motor. The rotor is the key component of the motor rotation. Another important function of the stator is to fix the rotor. The magnet fixing disk on the stator places the rotor in the center position, so that the rotor can maintain stable rotation without being disturbed by the outside world.

[0004] The current motor stator assembly mainly generates a magnetic field through the winding to enable the rotor to drive the main shaft to rotate. However, during the long-term rotation of the main shaft, due to the magnetic pull between the rotor and stator and the uneven air gap, the main shaft will deviate due to rotation and have poor stability, resulting in poor balance of the motor main shaft and affecting the output effect of the dual-speed adjustment motor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a horizontal dual-speed adjustable motor stator assembly, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solution: a horizontal dual-speed adjustable motor stator assembly, comprising: a housing and a convex plate integrally connected to the top of the housing for connecting to the motor housing; and further comprising: a plurality of eccentric magnetic tiles annularly arranged on the inner wall of the housing, and a clamping unit provided between every two eccentric magnetic tiles;

[0007] The bottom of the housing is integrally connected with a connecting groove, and a pressure ball bearing unit is arranged inside the connecting groove;

[0008] The pressure ball bearing unit includes a pad, and the pad is connected to the inner wall of the connecting groove. The surface of the pad is connected to the rear pressure ball. The surface of the rear pressure ball is rotatably connected to the pressure ring, and the pressure ring is fixedly connected to the inner wall of the connecting groove.

[0009] Furthermore, the card connection unit includes a card block, and the card block is fixedly connected to the inner wall of the housing. The outer wall of the housing is embedded with a card slot, and the card slot and the card block are correspondingly arranged.

[0010] Furthermore, the pressure ring is interference-connected to the surface of the rear pressure ball, and a plurality of arc-shaped guide plates that rotate and fit with the rear pressure ball are fixedly connected to the surface of the pressure ring.

[0011] Furthermore, a through hole for accommodating the main shaft is formed through the interior of the rear pressure ball, and the central axis of the through hole coincides with the central axis of the housing.

[0012] Furthermore, the connecting groove is concentrically arranged with the pressure ball bearing unit at the bottom end of the housing, and the connecting groove has a corresponding stepped structure at the bottom of the pressure ball bearing unit.

[0013] Furthermore, the multiple eccentric magnetic tiles are arranged in even numbers, and each eccentric magnetic tile is arranged in an arc-shaped structure.

[0014] Furthermore, the center distance between the inner and outer arcs of the eccentric magnetic tile is 6 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, a plurality of eccentric magnetic tiles are arranged in a ring inside the casing. Since the magnetic cores of the plurality of eccentric magnetic tiles are not concentric, a certain centrifugal force is generated when the rotor rotates, thereby balancing the deviation of the main shaft during rotation, which is beneficial to improving the stability and accuracy of the motor. Moreover, a pressure ball bearing unit is arranged at the bottom of the casing. Due to the special structure of the pressure ball bearing unit, the stator assembly can not only ensure low noise of the motor, but also prevent deviation of the main shaft of the motor rotor assembly during rotation.

[0017] 2. In the present invention, by arranging blocks and slots on the inner and outer walls of the casing, the casing can be stably connected to the motor rotor assembly through the blocks, and the casing can be connected to the motor housing through the slots. In addition, with the action of the clamping unit arranged between every two eccentric magnetic tiles, the blocks can cooperate with the connection between each eccentric magnetic tile and the rotor assembly, ensuring the installation accuracy of each eccentric magnetic tile and the rotor assembly, and effectively avoiding the problem of uneven air gap between the rotor assembly and the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a horizontal dual-speed adjustment motor stator assembly of the utility model;

[0019] Figure 2 This is a front view structural diagram of a horizontal dual-speed adjustment motor stator assembly in the present utility model;

[0020] Figure 3 This is a schematic cross-sectional view of a stator assembly of a horizontal dual-speed adjustment motor in the present invention;

[0021] Figure 4 This is a schematic diagram of the exploded structure of a stator assembly of a horizontal dual-speed adjustment motor in the present utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the medium-pressure ball bearing unit of the utility model;

[0023] Figure 6 This is a schematic diagram of the exploded cross-sectional structure of the medium-pressure ball bearing unit of the present invention.

[0024] In the figure: 1, housing; 11, convex plate; 12, clamping block; 13, clamping groove; 14, connecting groove; 2, eccentric magnetic tile; 3, pressure ball bearing unit; 31, pad; 32, rear pressure ball; 33, pressure ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-6, a horizontal dual-speed adjustment motor stator assembly, comprising: a casing 1, a convex plate 11 for connecting to the motor casing, a clamping block 12, a clamping groove 13, a connecting groove 14, an eccentric magnetic tile 2, a pressure ball bearing unit 3, a pad 31, a rear pressure ball 32 and a pressure ring 33, and also comprising: a plurality of eccentric magnetic tiles 2 are arranged in an annular manner on the inner wall of the casing 1, and the plurality of eccentric magnetic tiles 2 are arranged in an even number, and there are at least two eccentric magnetic tiles 2. Specifically, considering the magnetic pull and eccentric effect of the eccentric magnetic tile 2, each eccentric magnetic tile 2 is arranged in an arc-shaped structure, wherein the center distance between the inner and outer arcs of the eccentric magnetic tile 2 is 6 mm. Through such an arrangement, since the magnetic centers of the plurality of eccentric magnetic tiles 2 are not concentric, the rotor will generate a certain centrifugal force when rotating, thereby balancing the deviation of the main shaft during rotation, which is beneficial to improving the stability and accuracy of the motor. The eccentric magnetic tile 2 can effectively improve electromagnetic noise by increasing the degree of eccentricity, which is beneficial to improving the low-noise effect of the motor. In order to achieve the connection accuracy between the eccentric magnetic tile 2 and the rotor assembly, a clamping unit is provided between every two eccentric magnetic tiles 2, wherein the clamping unit includes a clamping block 12, and the clamping block 12 is fixedly connected to the inner wall of the casing 1, and the outer wall of the casing 1 is embedded with a clamping groove 13, and the clamping groove 13 and the clamping block 12 are correspondingly arranged. Through such an arrangement, the casing 1 can be stably connected to the motor rotor assembly through the clamping block 12, and the casing 1 can be connected to the motor housing through the clamping groove 13. By providing a clamping block 12 between every two eccentric magnetic tiles 2, the clamping block 12 can cooperate with the connection between each eccentric magnetic tile 2 and the rotor assembly, further achieving the connection effect of the eccentric magnetic tile 2 and the rotor assembly;

[0027] In consideration of further reducing the noise inside the motor, a connecting groove 14 is integrally connected to the bottom of the casing 1, and a pressure ball bearing unit 3 is arranged inside the connecting groove 14, wherein the connecting groove 14 is concentrically arranged with the pressure ball bearing unit 3 at the bottom end of the casing 1, ensuring the connection effect between the connecting groove 14 and the pressure ball bearing unit 3, and the connecting groove 14 is formed into a corresponding stepped structure at the bottom of the pressure ball bearing unit 3, so that the structure between the casing 1 and the connecting groove 14 is compact. Specifically, the pressure ball bearing unit 3 includes a pad 31, and the pad 31 is fixedly connected to the inner wall of the connecting groove 14, which is convenient for fixing the pressure ball bearing unit 3. At the same time, a rear pressure ball 32 is rotatably connected to the surface of the pad 31, and a passage for accommodating the main shaft is opened through the rear pressure ball 32. The through hole of the through hole coincides with the central axis of the casing 1, which is convenient for the rear pressure ball 32 to rotate inside the casing 1. At the same time, a pressure ring 33 is also rotatably connected to the surface of the rear pressure ball 32, and the pressure ring 33 is fixedly connected to the inner wall of the connecting groove 14, so that the pressure ball bearing unit 3 can rotate stably inside the connecting groove 14. In order to achieve low-noise rotation of the rear pressure ball 32 inside the pressure ring 33, the pressure ring 33 is interference-connected to the surface of the rear pressure ball 32, and the surface of the pressure ring 33 is fixedly connected with a plurality of arc-shaped guide plates that rotate in contact with the rear pressure ball 32. Through such a special pressure ball bearing unit 3, compared with the existing rear roller bearing, the rotation noise is greatly reduced, and the stability of the main shaft rotation is guaranteed. It also has a compact structure, strong stability and low production cost.

[0028] Working principle: When in use, the motor rotor is connected to the casing 1 through the clamping block 12, so that the rotor can be stably installed inside the casing 1. By setting a plurality of eccentric magnetic tiles 2 in a ring shape on the inner wall of the casing 1, the plurality of eccentric magnetic tiles 2 can generate a rotating magnetic field inside the casing 1. However, under the action of the eccentric magnetic tiles 2, the rotor will generate a certain centrifugal force when rotating, thereby balancing the deviation of the main shaft during rotation, which is beneficial to improving the stability and accuracy of the motor main shaft and avoiding the problem of loud rotation noise of the rotor. At the same time, by setting the pressure ball bearing unit 3 inside the stator assembly, the pressure The ball bearing unit 3 is connected between the rotor and stator assemblies, so that the rear pressure ball 32 can drive the rotor main shaft to rotate by rotating the ball, further improving the rotation accuracy of the main shaft and helping to avoid deviation of the main shaft. Moreover, the rotation of the rear pressure ball 32 inside the pressure ring 33 greatly reduces the rotation noise compared with the existing ball bearings, and the practicality is strong. After the rotor assembly and the stator assembly are installed, they are connected to the motor housing through the slot 13 on the outer wall of the casing 1 and the convex plate 11 at the top, which facilitates rapid assembly of the motor, thus completing the working principle of the horizontal dual-speed adjustment motor stator assembly.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal dual-speed adjustment motor stator assembly, comprising: The housing (1) and the top of the housing (1) are integrally connected with a convex plate (11) for connecting to a motor housing, and the characteristic is that the housing (1) further comprises: a plurality of eccentric magnetic tiles (2) are annularly arranged on the inner wall of the housing (1), and a snap-fit unit is arranged between every two eccentric magnetic tiles (2); The bottom of the housing (1) is integrally connected with a connecting groove (14), and a pressure ball bearing unit (3) is provided inside the connecting groove (14); The pressure ball bearing unit (3) includes a backing plate (31), and the backing plate (31) is connected to the inner wall of the connecting groove (14); the surface of the backing plate (31) is connected to the rear pressure ball (32); the surface of the rear pressure ball (32) is rotatably connected to the pressure ring (33), and the pressure ring (33) is fixedly connected to the inner wall of the connecting groove (14).

2. The horizontal dual-speed adjustment motor stator assembly according to claim 1, characterized in that: The card connection unit includes a card block (12), and the card block (12) is fixedly connected to the inner wall of the housing (1). The outer wall of the housing (1) is provided with a card slot (13), and the card slot (13) and the card block (12) are correspondingly arranged.

3. The horizontal dual-speed adjustment motor stator assembly according to claim 1, characterized in that: The pressure ring (33) is interference-connected to the surface of the rear pressure ball (32), and the surface of the pressure ring (33) is fixedly connected with a plurality of arc-shaped guide plates that rotate and fit with the rear pressure ball (32).

4. The horizontal dual-speed adjustment motor stator assembly according to claim 3, characterized in that: A through hole for accommodating the main shaft is formed through the interior of the rear pressure ball (32), and the central axis of the through hole coincides with the central axis of the housing (1).

5. The horizontal dual-speed adjustment motor stator assembly according to claim 1, characterized in that: The connecting groove (14) is arranged concentrically with the pressure ball bearing unit (3) at the bottom end of the housing (1), and the connecting groove (14) is in a corresponding stepped structure at the bottom of the pressure ball bearing unit (3).

6. The horizontal dual-speed adjustment motor stator assembly according to claim 1, characterized in that: The plurality of eccentric magnetic tiles (2) are arranged in even numbers, and each eccentric magnetic tile (2) is arranged in an arc-shaped structure.

7. The horizontal dual-speed adjustment motor stator assembly according to claim 1, characterized in that: The center distance between the inner and outer arcs of the eccentric magnetic tile (2) is 6 mm.

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