Motor stator lamination

Abstract

The present application relates to a kind of motor stator lamination, it includes stator lamination body, the stator lamination body includes yoke part and several tooth parts from the yoke part circumferential face inward protruding, several the tooth parts are equidistantly distributed, form a stator slot between adjacent tooth parts, several installation positioning hole are equipped on the yoke part, several the installation positioning hole is evenly spaced along the circumferential surface of the yoke part, the outer periphery of the yoke part is recessed from outside to inside and forms several buckle slot, positioning groove is equipped on the midline of the buckle slot, the number of the installation positioning hole is equal to the number of the buckle slot, there is a buckle slot between every two adjacent installation positioning hole, positioning groove is equipped on the midline of the buckle slot, the positioning groove both sides are equipped with several protrusions arranged at equal intervals.The present application has the characteristics of not easy to occur misplacement, welding effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a motor stator lamination. BACKGROUND

[0002] The stator is formed by stacking the stator laminations and welding the clamping slot of the lamination by a welding gun, so that the adjacent laminations are fused into one body. The guide device of the conventional welding gun for welding the stator is generally arranged on the welding machine, and the gun head of the welding gun is not guided, so that the gun head is easily shaken during welding, resulting in irregular welding of the clamping slot, and even the phenomena of missing welding, less welding and overflow welding due to shaking, which affects the quality of the stator.

[0003] In view of this, the present application provides a motor stator lamination which is not prone to misalignment during welding, to overcome some problems existing in the prior art. SUMMARY

[0004] The present application aims to provide a motor stator lamination which is not prone to misalignment during welding and has good welding effect, to overcome some problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a motor stator lamination, comprising a stator lamination body, the stator lamination body comprising a yoke portion and a plurality of tooth portions protruding inward from the circumferential surface of the yoke portion, the plurality of tooth portions being distributed at equal intervals, a stator slot being formed between adjacent tooth portions, a plurality of mounting positioning holes being provided on the yoke portion and being distributed at equal intervals along the circumferential surface of the yoke portion, a plurality of clamping slot recesses being formed by recessing the outer periphery of the yoke portion from outside to inside, a positioning recess being provided on the center line of each clamping slot recess, the number of clamping slot recesses being equal to the number of mounting positioning holes, one clamping slot recess being provided between every two adjacent mounting positioning holes, a positioning recess being provided on the center line of each clamping slot recess, and a plurality of protrusions being arranged at equal intervals on both sides of each positioning recess.

[0006] The bottom surface of the positioning recess is a circular arc surface, and the outer surface of the protrusion is a circular arc surface.

[0007] The width of the positioning recess is d1, and the width of the protrusion is d2, and 8d2>d1>5.5d2.

[0008] The inner surface of the tooth portion is recessed with a recess, and the bottom of the recess is an arc surface.

[0009] There is a gap between the inner ends of adjacent tooth portions, the width of the gap is d3, the maximum width of the stator slot is d4, and 3d3>d4>1.2d3.

[0010] The depth of the stator slot is H1, and the height of the yoke portion is H2, and H1 is greater than or equal to 0.3H2.

[0011] The stator slot has a slot opening, the slot opening has an inclined part, the width of the slot port is L1, the angle of the inclined part relative to the tangent of the slot bottom is alpha, the lower part of the inclined part is a side part, and the width of the side part is L2, wherein L2=L1+0.5H1tan alpha-0.6d3.

[0012] Compared with the prior art, the beneficial effects of the present application are that the center line of the buckle slot is provided with a positioning groove, and a plurality of protrusions are arranged at both sides of the positioning groove at equal intervals, which facilitates the positioning of the welding gun, keeps the welding gun moving in a straight line during welding, prevents the solder from separating from the buckle slot, and greatly enhances the connection strength after welding. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the motor stator lamination of the present application;

[0014] Figure 2 It is a schematic diagram of the motor stator lamination of the present application; Figure 1

[0015] Figure 3 It is an enlarged schematic diagram of the buckle slot in the present application; Figure 2

[0016] Figure 4 It is another angle of the schematic diagram of the motor stator lamination in the present application; Figure 1

[0017] Figure 5 It is an enlarged schematic diagram of the stator slot in the present application. Figure 4 DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Please refer to Figures 1 to 5 ​​​​The application discloses a motor stator lamination, which comprises a stator lamination body 100, the stator lamination body 100 comprises a yoke part 10 and a plurality of tooth parts 20 which are protruded from the circumferential surface of the yoke part 10, the plurality of tooth parts 20 are distributed at equal intervals, a stator slot 30 is formed between adjacent tooth parts 20 on the inner surface of the stator lamination body 100, and a plurality of windings are wound on the tooth part 10 through the stator slot 30. The yoke part 10 and the tooth part 20 are in an integrated structure. In the embodiment, the number of the tooth parts 20 is 16, but in other embodiments, the number of the tooth parts 20 is not limited to 16, and can be determined according to actual needs. In the embodiment, the plurality of tooth parts 20 are arranged on the inner circumferential wall of the yoke part 10 and are uniformly and spacedly distributed along the circumference of the yoke part 10, and when the stator is applied to a motor, the motor is an internal rotor motor.

[0020] Referring to Figure 1 A plurality of mounting positioning holes 11 are arranged on the yoke part 10, and the plurality of mounting positioning holes 11 are preferably uniformly and spacedly distributed along the circumferential surface of the yoke part 10. In the embodiment, the four mounting positioning holes 11 are arranged on the four corners of the outer periphery of the yoke part 10, and the mounting positioning holes 11 play a role of mounting and positioning the stator. A plurality of buckle slot 12 are arranged on the outer periphery of the yoke part 10 from the outside to the inside, Figure 2 A positioning groove 121 is arranged on the center line of the buckle slot 12, and a plurality of protrusions 122 are arranged on the two sides of the positioning groove 121 at equal intervals. The number of the buckle slot 12 is equal to that of the mounting positioning hole 11, and one buckle slot 12 is arranged between every two adjacent mounting positioning holes 11. The bottom surface of the positioning groove 121 is a circular arc surface, and the outer surface of the protrusion 122 is a circular arc surface. Figure 3 The width of the positioning groove 121 is d1, and the width of the protrusion 122 is d2, 8d2>d1>5.5d2

[0021] Referring to Figure 2 A groove 21 is arranged on the inner surface of the tooth part 20, and the bottom of the groove 21 is an arc surface. There is a gap 22 between the inner ends of adjacent tooth parts 20, the width of the gap 22 is d3, the magnetic permeability of the gap 22 is smaller than that of the stator tooth 112, and the coils arranged on the outer sides of the adjacent tooth parts 20 respectively generate magnetic induction lines. Since the magnetic permeability of the gap 22 is relatively small, the influence of the magnetic induction lines generated by the adjacent coils is relatively small.

[0022] Referring to Figure 3 and Figure 5In order to ensure that the stator core has sufficient strength and reduce additional loss, the maximum width of the stator slot 30 is d4, 3d3>d4>1.2d3. The slot depth of the stator slot 30 is H1, the height of the yoke portion 10 is H2, and H1≥0.3H2. The stator slot 30 has a slot opening 31, and the slot opening 31 has an inclined portion 311. In the embodiment, the width of the slot opening 31 at the port of the recess 21 is L1, and the angle of the inclined portion 311 relative to the tangent of the bottom of the recess 21 is α. Below the inclined portion 311 is a side portion 301, and the width of the side portion 301 is L2, where L2=L1+0.5H1tanα-0.6d3. In this way, the starting speed of the motor is improved.

[0023] On the basis of meeting electromagnetic performance, in order to improve the utilization rate of the stator slot 30 and ensure that uniform tooth portion 20 magnetic density is obtained, and to avoid local saturation of the tooth portion 20, a pear-shaped slot and parallel teeth are used.

[0024] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motor stator lamination, comprising a stator lamination body, the stator lamination body including a yoke and a plurality of teeth protruding inward from the circumference of the yoke, the plurality of teeth being equally spaced, and a stator slot being formed between adjacent teeth, characterized in that: The yoke is provided with a plurality of mounting and positioning holes, which are evenly spaced along the circumference of the yoke. The outer circumference of the yoke is recessed from the outside inwards to form a plurality of fastening grooves. A positioning groove is provided on the center line of each fastening groove. The number of fastening grooves is equal to the number of mounting and positioning holes, and a fastening groove is provided between every two adjacent mounting and positioning holes. A plurality of protrusions are arranged at equal intervals on both sides of each positioning groove. The inner surface of the tooth is recessed with a groove, the bottom of which is an arc-shaped surface. Adjacent... The inner end of the toothed part has a gap with a width of d3. The maximum width of the stator slot is d4, where 3d3 > d4 > 1.2d3. The depth of the stator slot is H1, and the height of the yoke is H2, where H1 ≥ 0.3H2. The stator slot has an opening with an inclined portion. The width at the end of the groove is L1. The angle between the inclined portion and the tangent at the bottom of the groove is α. Below the inclined portion is a side portion with a width of L2, where L2 = L1 + 0.5H1 tanα - 0.6d3.

2. The motor stator lamination according to claim 1, characterized in that: The bottom surface of the positioning groove is an arc surface, and the outer surface of the protrusion is an arc surface.

3. The motor stator lamination according to claim 2, characterized in that: The width of the positioning groove is d1, and the width of the protrusion is d2, where 8d2 > d1 > 5.5d2.

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