Stator pressing ring, motor stator and motor

Abstract

The utility model discloses a stator pressing ring, a motor stator and a motor. The stator pressing ring comprises a pressing ring and pressing keys evenly distributed in the circumferential direction of the inner ring of the pressing ring, and the pressing keys extend in the radial direction of the pressing ring. The pressing ring comprises an outer ring surface and an inner ring surface which are oppositely arranged, and a pressing surface and a contact surface which are oppositely arranged, the pressing key radially extends towards the circle center from the inner ring surface, the contact surface is convexly provided with a plurality of contact tables, the plurality of contact tables are uniformly distributed along the circumferential direction at intervals, and a welding part is arranged between every two adjacent contact tables. The contact table is arranged on the contact surface in a protruding mode, the height difference exists between the contact table and the welding part, the bending degree of a follow-up buckle piece and the height of a welding seam can be effectively controlled, the surface of a stator pressing ring is made to be smooth, a motor stator is easy to install and press, eccentricity is avoided, air gaps of a whole motor can be made to be even, and the problems of large harmonic waves, motor vibration and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator pressing ring and a motor stator. Background Art

[0002] The motor's stator is the stationary part of the motor. It consists of the base, the stator core within the base, and the stator ring that secures the stator core. The primary function of the motor's electronics is to generate a rotating magnetic field to align with the motor's rotor. The rotor's primary function is to be cut by the magnetic lines of force in the rotating magnetic field, generating current.

[0003] Currently, in vertical motors and some water-jacketed structures (IC3W7), an iron core stop is added during the motor base design. However, the stator core clasps are bent and welded to the surface of the stator pressure ring. Since the bending degree of the clasps and the height of the weld cannot be effectively controlled, the surface of the stator pressure ring is uneven, which easily causes eccentricity during stator assembly, thereby increasing the difficulty of stator assembly, making the motor air gap uneven, and causing problems such as large harmonic motor vibration. Utility Model Content

[0004] The purpose of the utility model is to provide a stator pressing ring and a motor stator.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solution: a stator pressure ring, which includes a pressure ring and pressure keys evenly distributed circumferentially from the inner ring of the pressure ring, and the pressure keys extend radially from the pressure ring; the pressure ring includes an outer ring surface and an inner ring surface arranged oppositely, and a pressure surface and a contact surface arranged oppositely, the pressure keys extend radially from the inner ring surface toward the center of the circle, and the contact surface is convexly provided with a plurality of contact platforms, and the plurality of contact platforms are evenly distributed along the circumferential direction, and welding parts are set between adjacent contact platforms.

[0006] As a further improved technical solution of the present invention, the height range of the touch platform is 3-5 mm.

[0007] As a further improved technical solution of the present invention, the contact platform extends from the contact surface to the outer annular surface.

[0008] As a further improved technical solution of the present invention, the circumferential length of the contact platform is greater than 3 times the circumferential length of the welding portion.

[0009] As a further improved technical solution of the present invention, the radial length of the contact platform is smaller than the radial length of the contact surface.

[0010] As a further improved technical solution of the present invention, the stator pressure ring further includes four fixing holes penetrating the pressure ring, and the four fixing holes are evenly distributed on the pressure ring along the circumference.

[0011] The utility model also discloses a motor stator, which comprises a base, a stator core located in the base, and a stator pressing ring as described above for fixing the stator core.

[0012] As a further improved technical solution of the present invention, the stator core includes punching sheets pressed by the stator pressing ring and buckles for buckling the stator pressing ring and the punching sheets, and the buckles are welded and fixed to the welding portion.

[0013] As a further improved technical solution of the present invention, the base includes a stopper abutting against the contact platform.

[0014] The utility model also discloses a motor, which includes the motor stator as described above.

[0015] The beneficial effects of the utility model are as follows: the contact platform is convexly arranged on the contact surface, and there is a height difference between the contact platform and the welding part, which can effectively control the bending degree of the subsequent buckle piece and the height of the weld, so that the surface of the stator pressure ring is flat, the motor stator is easy to press and avoid eccentricity, and the air gap of the entire motor can be uniform, avoiding the occurrence of problems such as harmonic large motor vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the stator pressure ring of the utility model;

[0017] Figure 2 yes Figure 1 Enlarged schematic diagram of the middle circle A;

[0018] Figure 3 yes Figure 1 Schematic cross-sectional view of ;

[0019] Figure 4 yes Figure 3 A partial enlarged schematic diagram;

[0020] Figure 5 It is a three-dimensional schematic diagram of the stator of the motor of the utility model;

[0021] Figure 6 This is a schematic diagram of the assembly of the stator pressing ring and the stator core in the stator of the motor of the utility model;

[0022] Figure 7 yes Figure 5 Enlarged schematic diagram of circle B. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, it should be noted that these embodiments are not intended to limit the present invention, and any equivalent functional, methodological, or structural modifications or substitutions made by persons of ordinary skill in the art based on these embodiments fall within the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 7 The present invention discloses a stator pressure ring 100, which includes a pressure ring 1 and a pressure key 2 uniformly distributed circumferentially from the inner ring of the pressure ring 1, and the pressure key 2 extends radially from the pressure ring 1. The pressure ring 1 includes an outer ring surface 11 and an inner ring surface 12 arranged opposite to each other, and a pressure surface 13 and a contact surface 14 arranged opposite to each other. The pressure key 2 extends radially from the inner ring surface 12 toward the center of the circle, and the contact surface 14 is protruding from a plurality of contact platforms 141, and the plurality of contact platforms 141 are uniformly distributed along the circumferential direction, and welding portions 142 are provided between adjacent contact platforms 141. The contact platforms 141 are protruding from the contact surface 14, and there is a height difference between the contact platforms 141 and the welding portion 142, which can effectively control the bending degree of the subsequent buckle 52 and the height of the weld, so that the surface of the stator pressure ring 100 is smooth, so that the motor stator 200 is easy to press and avoid eccentricity, and the air gap of the entire motor can be uniform, avoiding problems such as harmonic large motor vibration.

[0025] Furthermore, the height H of the contact platform 141 ranges from 3 to 5 mm and is adjusted based on the thickness of the cleat to ensure the surface flatness of the stator pressure ring 100. Preferably, the contact platform 141 extends from the contact surface 14 to the outer annular surface 11, and the circumferential length of the contact platform 141 is greater than three times the circumferential length of the welded portion 142 to ensure the stability of the entire stator pressure ring 100.

[0026] Furthermore, the radial length of the contact platform 141 is smaller than the radial length of the contact surface 14 to ensure the stability of the press. The stator pressure ring 100 also includes four fixing holes 3 that penetrate the pressure ring 1. The four fixing holes are evenly distributed along the circumference of the pressure ring 1 to ensure the firmness and stability of the press.

[0027] See also Figures 5 to 7The present invention also discloses a motor stator 200, which includes a base 4, a stator core 5 located in the base 4, and a stator pressure ring 100 as described above for fixing the stator core 5. The stator core 5 includes a punching sheet 51 pressed by the stator pressure ring 100 and a buckle 52 buckling the stator pressure ring 100 and the punching sheet 51. The pressing surface 13 presses the punching sheet 51, and the buckle 52 is welded and fixed to the welding portion 142. The base 4 includes a stopper 41 abutting against the contact platform 141. The buckle 52 is bent and welded to the welding portion 142. The stopper 41 of the base 4 is in contact and combined with the contact platform 141. The thickness of the contact platform 141 is set according to the thickness of the buckle 52, so that the contact area and the welding area are in the same plane, so that the surface of the stator pressure ring 100 is flat, which can reduce the difficulty of pressurizing the motor stator 200 and ensure that there is no eccentricity during the pressurization of the motor stator 200.

[0028] The present invention also discloses a motor, which includes the motor stator 200 as described above. The motor has a uniform air gap and can avoid problems such as harmonics and large motor vibrations.

[0029] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0030] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stator pressing ring, characterized in that: It includes a pressure ring and pressure keys uniformly distributed circumferentially from the inner ring of the pressure ring, and the pressure keys extend radially from the pressure ring; the pressure ring includes an outer ring surface and an inner ring surface arranged oppositely, and a pressure surface and a contact surface arranged oppositely, the pressure keys extend radially from the inner ring surface toward the center of the circle, and the contact surface is convexly provided with a plurality of contact platforms, and the plurality of contact platforms are uniformly distributed along the circumferential direction, and welding parts are set between adjacent contact platforms.

2. The stator pressing ring according to claim 1, characterized in that: The height of the contact platform ranges from 3 to 5 mm.

3. The stator pressing ring according to claim 1, characterized in that: The contact platform extends from the contact surface to the outer annular surface.

4. The stator pressing ring according to claim 1, characterized in that: The circumferential length of the contact platform is greater than 3 times the circumferential length of the welding portion.

5. The stator pressing ring according to claim 1, characterized in that: The radial length of the contact platform is smaller than the radial length of the contact surface.

6. The stator pressing ring according to claim 1, characterized in that: The stator pressure ring further comprises four fixing holes penetrating the pressure ring, and the four fixing holes are evenly distributed on the pressure ring along the circumference.

7. A motor stator, characterized in that: The stator comprises a machine base, a stator core located in the machine base, and a stator pressing ring according to any one of claims 1 to 6 for fixing the stator core.

8. The motor stator according to claim 7, characterized in that: The stator core includes a punching sheet pressed by the stator pressing ring and a buckle sheet buckled with the stator pressing ring and the punching sheet, and the buckle sheet is welded and fixed to the welding portion.

9. The motor stator according to claim 8, characterized in that: The base includes a stopper abutting against the contact platform.

10. A motor, characterized in that: It comprises the motor stator according to any one of claims 7 to 9.

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