A stator fixing assembly, motor and fixing method thereof

Abstract

A stator fixing assembly, a motor and a fixing method thereof, which mainly solve the technical problems of the existing complex stator fixing structure, long motor parts assembly time, and excessive weight of the motor as a whole. The key points of its technical solution are: comprising a stator, a connecting piece and a supporting piece, the supporting piece is arranged in the connecting piece, the stator is fixed at the outer end of the connecting piece, the connecting piece comprises a plurality of connecting curved pieces, the plurality of connecting curved pieces are adjacently combined along the same center of a circle to form an annular connecting piece, the supporting piece is an integrally formed annular supporting piece, and the supporting piece cooperates with the connecting curved piece; it is mainly used for fixing the stator of the motor.

Description

Technical Field

[0001] The invention relates to the field of stator fixing structures of motors and motor structures, and in particular to a stator fixing component, a motor and a fixing method thereof. Background Art

[0002] The motor includes a stator, a housing and a shaft. Usually, the stator of the motor is fixed by connecting one end to the housing and the other end to the shaft through a bearing to achieve a fixed connection of the motor stator and ensure the normal operation of the motor. However, long-term operation of the motor may cause damage, wear and oil leakage to the bearing, causing the motor to stop working and need to be replaced and repaired.

[0003] Some motors also use the casing to directly fix the stator to achieve a fixed connection of the motor stator, but this makes the structure of the motor complex, with too many assembled parts and too long processing and assembly time, affecting the motor production efficiency and the cost of providing the motor. At the same time, it increases the overall weight of the motor, limiting the use of the motor and making it unsuitable for industries that have weight requirements such as aircraft, automobiles and ships. Summary of the invention

[0004] The purpose of the present invention is to provide a stator fixing assembly and a motor with a light structure, and also to provide a motor stator fixing method with convenient motor installation.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide a stator fixing assembly of a motor, the stator fixing assembly comprising a stator, a connecting member and a supporting member, the supporting member is arranged in the connecting member, and the stator is fixed at the outer end of the connecting member;

[0006] The connector of the present invention comprises a plurality of curved connectors, and the plurality of curved connectors are adjacently combined along the same center of a circle to form an annular connector;

[0007] Preferably, the connecting piece is composed of a plurality of identical connecting curved pieces adjacently connected along the same center of a circle to form an annular connecting piece;

[0008] Preferably, the connecting piece is composed of a plurality of different connecting curved pieces adjacently connected along the same center of a circle to form an annular connecting piece;

[0009] Preferably, the connecting piece is composed of a plurality of identical connecting curved pieces and different connecting curved pieces adjacently combined along the same center of a circle to form an annular connecting piece;

[0010] The same as described above in the present invention refers to the same shape and the same curvature, and the different as described above refers to the same shape and different curvature;

[0011] The support member of the present invention is an integrally formed annular support member;

[0012] The supporting member of the present invention cooperates with the connecting member;

[0013] The support member of the present invention is connected to the inner ring of the connecting member;

[0014] The support member of the present invention is an annular member, which ensures that the support member is evenly stressed and well supports the connecting member and the stator;

[0015] The inner ring of the connecting piece of the present invention comprises a plurality of inner ring surface portions and an inner ring step portion;

[0016] The inner ring step portion of the present invention is formed on the inner ring of the connecting member;

[0017] The outer ring of the connecting piece of the present invention comprises a plurality of outer ring surface portions and an outer ring step portion;

[0018] The outer ring step portion of the present invention is formed on the outer ring of the connecting member;

[0019] The outer ring step portion of the present invention is located between adjacent outer ring surface portions among the plurality of outer ring surface portions;

[0020] The inner ring surface of the connecting piece of the present invention comprises a first inner ring surface, a second inner ring surface and a third inner ring surface. The first inner ring surface, the second inner ring surface and the third inner ring surface are adjacently combined in sequence along the axial direction. The inner diameter of the first inner ring surface is smaller than the inner diameter of the second inner ring surface. The inner ring step portion is located between the first inner ring surface and the second inner ring surface. The side end surface of the support member is connected to the inner ring step portion to prevent the support member from passing through the inner ring of the connecting piece. The inner diameter of the third inner ring surface increases gradually from one end to the other end of the third inner ring surface. The end with a smaller inner diameter of the third inner ring surface is equal to the inner diameter of the second inner ring surface. The structure of the third inner ring surface effectively helps the support member move from the third inner ring surface to the second inner ring surface.

[0021] The outer ring surface of the connecting piece of the present invention comprises a first outer ring surface, a second outer ring surface, a third outer ring surface, a fourth outer ring surface and a fifth outer ring surface, which are sequentially adjacent to each other in the axial direction, and the outer diameter of the first outer ring surface is greater than the outer diameter of the second outer ring surface; the outer diameter of the second outer ring surface is greater than the outer diameter of the third outer ring surface; the outer diameter of the fourth outer ring surface is greater than the outer diameter of the third outer ring surface, and the outer diameter of the fifth outer ring surface is greater than the outer diameter of the fourth outer ring surface; the outer ring structure of the connecting piece of the present invention facilitates fixing the stator core of the motor;

[0022] The outer diameter of the first outer ring surface portion of the present invention is equal to the outer diameter of the fifth outer ring surface portion, the outer diameter of the second outer ring surface portion is equal to the outer diameter of the fourth outer ring surface portion, and the outer ring surfaces of the connecting member are symmetrically arranged, so as to facilitate the corresponding installation of the stator core;

[0023] The outer diameter of the outer periphery of the support member of the present invention is greater than the inner diameter of the second inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member; the support member of the present invention mainly supports the connecting member and disperses a plurality of connecting curved members to achieve stable fixing of the stator on the housing inside the motor;

[0024] The outer periphery of the support member of the present invention is connected to the second inner ring surface portion of the connecting member;

[0025] The stator of the present invention includes a plurality of stator cores and coils, wherein the stator core includes a tooth portion and a connecting portion, wherein the tooth portion of the stator core is connected to the outer ring of the connecting member and is arranged on the second outer ring surface portion and the fourth outer ring surface portion, and the stator core is fixedly connected to the connecting member via the second outer ring surface portion and the fourth outer ring surface portion.

[0026] The inner diameter distance from one end to the other end of the third inner ring surface of the connecting piece of the present invention is smaller than the inner diameter distance from the first inner ring surface to the second inner ring surface of the connecting piece, thereby reducing the dispersion range of the connecting piece, ensuring that the connecting piece is tightly connected to the supporting piece, and the supporting piece will not excessively stretch the connecting piece, thereby preventing the supporting piece from being subjected to uneven force and affecting fixation.

[0027] The stator core of the present invention comprises a first stator core and a second stator core. The first stator core comprises a first tooth portion and a first connecting portion, the second stator core comprises a second tooth portion and a second connecting portion, and the first stator core passes through the coil via the first connecting portion and is connected to the second connecting portion of the second stator core.

[0028] The end surfaces of the first connection part and the second connection part of the present invention are respectively provided with convex parts and concave parts, and the convex part and concave part of the first connection part respectively correspond to the concave part and convex part of the second connection part, so that the first stator core and the second stator core will not slip.

[0029] Preferably, the inner ring surface of the connector of the present invention comprises a first inner ring surface, a second inner ring surface, a third inner ring surface, a fourth inner ring surface and a fifth inner ring surface, wherein the first inner ring surface, the second inner ring surface, the third inner ring surface, the fourth inner ring surface and the fifth inner ring surface are sequentially adjacently combined, the inner diameter of the first inner ring surface is smaller than the inner diameter of the second inner ring surface, the inner diameter from one end of the third inner ring surface to the other end of the third inner ring surface gradually increases, the end with a smaller inner diameter of the third inner ring surface is equal to the inner diameter of the second inner ring surface, the inner diameter of the fourth inner ring surface is larger than the inner diameter of the end of the third inner ring surface, the inner diameter from one end of the fifth inner ring surface to the other end of the fifth inner ring surface gradually increases, and the end with a smaller inner diameter of the fifth inner ring surface is equal to the inner diameter of the fourth inner ring surface;

[0030] The support member of the present invention comprises a first support member and a second support member;

[0031] The outer diameter of the outer periphery of the first support member of the present invention is larger than the inner diameter of the second inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the first support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member;

[0032] The outer periphery of the first support member of the present invention is connected to the second inner ring surface portion of the connecting member;

[0033] The outer diameter of the outer periphery of the second support member of the present invention is greater than the inner diameter of the fourth inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the second support member is smaller than the inner diameter of the end portion of the fifth inner ring surface portion of the connecting member;

[0034] The outer periphery of the second supporting member of the present invention is connected to the fourth inner ring surface portion of the connecting member.

[0035] Preferably in another embodiment, the support member of the present invention comprises a first support member and a second support member;

[0036] The outer diameter of the outer periphery of the first support member of the present invention is slightly larger than the inner diameter of the second inner ring surface portion of the connecting member, the length of the outer periphery of the first support member is equal to the length of the second inner ring surface portion of the connecting member, the outer diameter of the outer periphery of the first support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member, and the outer periphery of the first support member is connected to the second inner ring surface portion of the connecting member;

[0037] The outer diameter of the outer periphery of the second support member of the present invention is slightly larger than the inner diameter of the third inner ring surface portion of the connecting member, and the inner diameter of the outer periphery of the second support member gradually increases from one end to the other end. The length of the outer periphery of the second support member is equal to the length of the third inner ring surface portion of the connecting member, and the outer periphery of the second support member is connected to the third inner ring surface portion of the connecting member.

[0038] The connecting piece of the present invention includes a first connecting curved piece and a second connecting curved piece, the first connecting curved piece and the second connecting curved piece are adjacent to each other along the same center of a circle, a protrusion is arranged on the end surface where the first connecting curved piece is connected to the second connecting curved piece, and a recess is arranged on the end surface where the second connecting curved piece is connected to the first connecting curved piece, the protrusion cooperates with the recess to increase the contact area between the first connecting curved piece and the second connecting curved piece, thereby ensuring that the first connecting curved piece and the second connecting curved piece are firmly connected.

[0039] The connecting piece of the present invention comprises a plurality of connecting curved pieces, one end face of which is provided with a protrusion, and the other end face of which is provided with a recessed portion, the protrusions and recessed portions of two adjacent connecting curved pieces are matched and connected, and the plurality of connecting curved pieces are adjacently combined along the same circle center to form a ring-shaped piece.

[0040] The motor of the present invention comprises the above-mentioned stator fixing assembly and a casing, and the stator fixing assembly is arranged in the casing.

[0041] The casing of the present invention comprises a casing body and an end cover, wherein a casing inner ring is arranged in the casing body, wherein the casing inner ring comprises a first casing inner ring face portion, a second casing inner ring face portion and a third casing inner ring face portion, wherein the first casing inner ring face portion, the second casing inner ring face portion and the third casing inner ring face portion are sequentially adjacently combined, wherein the casing inner ring of the present invention further comprises a casing inner ring step portion, wherein the casing inner ring step portions are arranged between two casing inner ring face portions, wherein the outer diameter of the first casing inner ring face portion is smaller than the outer diameter of the second casing inner ring face portion, and the second casing inner ring face portion corresponds to the second outer ring face portion; wherein the outer diameter of the second casing inner ring face portion is smaller than the outer diameter of the third casing inner ring face portion, and the third casing inner ring face portion corresponds to the third outer ring face portion, thereby facilitating the fixing of the stator core of the motor;

[0042] An end cover inner ring is arranged inside the end cover of the present invention, and the end cover inner ring includes a first end cover inner ring surface portion and a second end cover inner ring surface portion, and the first end cover inner ring surface portion and the second end cover inner ring surface portion are adjacent to each other. The end cover inner ring of the present invention also includes an end cover inner ring step portion, and the end cover inner ring step portion is arranged between the two end cover inner ring surface portions. The outer diameter of the first end cover inner ring surface portion is greater than the outer diameter of the second end cover inner ring surface portion, and the first end cover inner ring surface portion corresponds to the fourth outer ring surface portion. The outer ring of the connecting piece fixes one end of the stator core of the motor, and the end cover inner ring cooperates with the shell inner ring to fix the other end of the stator core of the motor.

[0043] The stator fixing method of the present invention comprises: combining a plurality of connecting curved pieces adjacent to each other along the same center of a circle to form an annular connecting piece; then fitting a plurality of stator cores with coils; fitting the teeth of the stator cores to the outer ring of the connecting piece, and then connecting the coils on the plurality of stator cores to each other to form a relatively stable stator fixing structure; then installing the stator fixing structure into a casing, with the other end of the stator fixing structure connected to the inner ring of the casing body; a support piece is arranged inwardly along one end of the inner ring of the connecting piece, dispersing the connecting curved pieces of the connecting piece, and connecting the connecting piece and the support piece to form a stable fixing structure; finally installing an end cover, with the shell teeth at the other end of the stator fixing structure connected to the inner ring of the end cover, so that the stator is firmly fixed in the motor.

[0044] The beneficial effects of the present invention are as follows: the present invention has a sophisticated structure, simple assembly, and reduces the overall weight of the motor. The stator fixing method also effectively improves the motor stator assembly efficiency and the motor production efficiency, while reducing production costs and reducing production time. The motor stator does not require the use of bearings for fixing and does not require bearing maintenance, which solves the problems of cumbersome later maintenance and frequent production interruptions for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the connecting piece of the present invention;

[0046] Figure 2 It is a schematic diagram of a combination of multiple connecting curved parts A of the present invention;

[0047] Figure 3 It is a schematic diagram of the combination of multiple connecting curved parts A and multiple connecting curved parts B of the present invention;

[0048] Figure 4 It is a schematic diagram of a combination of a plurality of connecting curved pieces A, a connecting curved piece B and a connecting curved piece C of the present invention;

[0049] Figure 5 It is a schematic diagram of the structure of the stator fixing assembly of the present invention;

[0050] Figure 6 It is a schematic diagram of the structure of a stator fixing assembly in another embodiment of the present invention;

[0051] Figure 7 It is a schematic diagram of the stator fixing assembly assembly in the axial direction of the present invention;

[0052] Figure 8 It is a schematic diagram of the connection of two connecting curved parts of the present invention;

[0053] Fig. 9 is a schematic diagram of the motor structure of the present invention;

[0054] Fig.10 It is a schematic diagram of the combination of three supporting members of the motor of the present invention;

[0055] Fig.11 It is a schematic diagram of the combination of two supporting members of the motor of the present invention;

[0056] Fig.12 is a schematic diagram of the stator fixing structure of the present invention without the combined support member;

[0057] Fig.13 It is a schematic diagram of the stator fixing structure of the present invention after the support member is assembled;

[0058] Fig.14 It is a structural schematic diagram of the support member of the present invention;

[0059] Fig.15 It is a stereoscopic diagram of the combination of the connecting curved piece and the stator core of the present invention;

[0060] Fig.16 It is an exploded view of the combination of the support member, the connecting member and the stator of the present invention.

[0061] In the figure: 1-stator, 2-connector, 3-support, 4-stator fixing assembly, 5-housing, 6-rotor, 7-rotating shaft, 8-bearing, 20-connecting curved part, 201-first connecting curved part, 202-second connecting curved part, 203-connecting curved part A, 204-connecting curved part B, 205-connecting curved part C, 211-first inner ring face part, 212-second inner ring face part, 213-third inner ring face part, 214-fourth inner ring face part, 215-fifth inner ring face part, 219-inner ring step part, 221-first outer ring face part, 222-second outer ring face part, 223-third outer ring face part, 224-fourth outer ring face part, 225-fifth outer ring face part, 229-outer ring step part, 11-stator core , 110-tooth portion, 111-connecting portion, 12-first stator core, 121-first tooth portion, 122-first connecting portion, 13-second stator core, 131-second tooth portion, 132-second connecting portion, 1111-convex portion, 1112-concave portion, 31-first support member, 32-second support member, 33-third support member, 2011-protrusion, 2012-concave portion, 51-shell body, 511-first shell inner ring surface portion, 512-second shell inner ring surface portion, 513-third shell inner ring surface portion, 52-end cover, 521-first end cover inner ring surface portion, 522-second end cover inner ring surface portion, L1-inner diameter distance between two ends of the third inner ring surface portion, L2-inner diameter distance from the first inner ring surface portion to the second inner ring surface portion. DETAILED DESCRIPTION

[0062] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0063] Example 1, see Figure 1 The present invention discloses a stator fixing assembly of a motor, the stator fixing assembly comprises a connecting piece, the connecting piece is composed of a plurality of connecting curved pieces adjacently combined along the same circle center to form an annular connecting piece, the inner ring surface of the connecting piece comprises a first inner ring surface, a second inner ring surface, a third inner ring surface and an inner ring step portion, the first inner ring surface, the second inner ring surface and the third inner ring surface are adjacently combined in sequence along the axial direction, the inner diameter of the first inner ring surface is smaller than the inner diameter of the second inner ring surface, and the inner ring step portion of the connecting piece is generated between the first inner ring surface and the second inner ring surface; the inner diameter of the third inner ring surface increases gradually from one end to the other end of the third inner ring surface, and the end with a smaller inner diameter of the third inner ring surface is equal to the inner diameter of the second inner ring surface;

[0064] The outer ring surface of the connecting piece includes a first outer ring surface, a second outer ring surface, a third outer ring surface, a fourth outer ring surface, a fifth outer ring surface and an outer ring step portion. The first outer ring surface, the second outer ring surface, the third outer ring surface, the fourth outer ring surface and the fifth outer ring surface are sequentially adjacently combined along the axial direction, and the outer ring step portion is arranged between two outer ring surface portions. The outer diameter of the first outer ring surface portion is greater than the outer diameter of the second outer ring surface portion; the outer diameter of the second outer ring surface portion is greater than the outer diameter of the third outer ring surface portion;

[0065] The inner diameter distance from one end to the other end of the third inner ring surface of the connecting piece is smaller than the inner diameter distance from the first inner ring surface to the second inner ring surface of the connecting piece, that is, the inner diameter distance from one end to the other end of the third inner ring surface is L1, and the inner diameter distance from the first inner ring surface to the second inner ring surface is L2, L1 <L2。

[0066] Example 2, see Figure 2 The present invention discloses a connecting piece of a stator fixing assembly, the connecting piece comprises a plurality of connecting curved pieces A, the plurality of connecting curved pieces A are adjacently combined along the same center of a circle to form an annular connecting piece; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0067] Example 3, see Figure 3 The present invention discloses a connecting piece of a stator fixing assembly, wherein the connecting piece comprises a plurality of connecting curved pieces A and a plurality of connecting curved pieces B, wherein the plurality of connecting curved pieces A and the plurality of connecting curved pieces B are adjacently combined along the same center of a circle to form an annular connecting piece; the rest is the same as any other embodiment or a combination of two or more embodiments of the present invention.

[0068] Example 4, see Figure 4 The present invention discloses a connecting piece of a stator fixing assembly, wherein the connecting piece comprises a plurality of connecting curved pieces A, a connecting curved piece B and a connecting curved piece C, wherein the plurality of connecting curved pieces A, a connecting curved piece B and a connecting curved piece C are adjacently combined along the same center of a circle to form an annular connecting piece; the rest is the same as any other embodiment or a combination of two or more embodiments of the present invention.

[0069] Example 5, see Figure 5The present invention discloses a stator fixing assembly, the stator fixing assembly comprises a stator, a connecting member and a supporting member, the stator comprises a plurality of stator cores, the stator cores comprise a first stator core and a second stator core, the first stator core comprises a first tooth portion and a first connecting portion, the second stator core comprises a second tooth portion and a second connecting portion, the first stator core is connected to the second connecting portion of the second stator core through the first connecting portion; the outer ring of the connecting member comprises a first outer ring face portion, a second outer ring face portion, a third outer ring face portion, a fourth outer ring face portion, a fifth outer ring face portion and an outer ring step portion, the first tooth portion of the first stator core is matched and connected with the second outer ring face portion of the connecting member, the second tooth portion of the second stator core is matched and connected with the fourth outer ring face portion of the connecting member; the inner ring of the connecting member comprises a first inner ring face portion, a second inner ring face portion, a third inner ring face portion and an inner ring step portion, the supporting member is matched and connected with the second inner ring face portion of the connecting member; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0070] Example 6, see Figure 6 The present invention discloses a stator fixing assembly, the stator fixing assembly comprises a stator, a connecting member and a supporting member, the stator comprises a plurality of stator cores, the stator cores comprise a first stator core and a second stator core, the first stator core comprises a first tooth portion and a first connecting portion, the second stator core comprises a second tooth portion and a second connecting portion, the first stator core is connected to the second connecting portion of the second stator core via the first connecting portion; the outer ring of the connecting member comprises a first outer ring face portion, a second outer ring face portion, a third outer ring face portion, a fourth outer ring face portion, a fifth outer ring face portion and an outer ring step portion, the first tooth portion of the first stator core is matched and connected with the second outer ring face portion of the connecting member, the second tooth portion of the second stator core is matched with the fourth outer ring face portion of the connecting member The inner ring of the connecting member comprises a first inner ring face portion, a second inner ring face portion, a third inner ring face portion, a fourth inner ring face portion and an inner ring step portion, the inner diameter of the first inner ring face portion is smaller than the inner diameter of the second inner ring face portion, the inner diameter of the first inner ring face portion is smaller than the inner diameter of the fourth inner ring face portion, an inner ring step portion is arranged between the first inner ring face portion and the second inner ring face portion, an inner ring step portion is arranged between the first inner ring face portion and the fourth inner ring face portion, the inner diameter from one end of the third inner ring face portion to the other end of the third inner ring face portion gradually increases, the end of the third inner ring face portion with a smaller inner diameter is equal to the inner diameter of the second inner ring face portion, the support member is matched and connected with the second inner ring face portion of the connecting member; the rest is the same as any other embodiment or a combination of two or more embodiments of the present invention.

[0071] Example 7, see Figure 7The present invention discloses a stator fixing assembly, the stator fixing assembly comprising a stator, a connecting member and a supporting member, the connecting member comprising a plurality of connecting curved members, the plurality of connecting curved members being adjacently combined along the same center of a circle to form an annular connecting member; the stator comprising a plurality of stator cores and coils, the plurality of stator cores and coils being arranged and connected in an annular manner along the outer ring of the connecting member, the supporting member being arranged in the connecting member, the stator core comprising a first stator core and a second stator core, the first stator core comprising a first tooth portion and a first connecting portion, the second stator core comprising a second tooth portion and a second connecting portion, the first stator core passing through the coil through the first connecting portion and connected to the second connecting portion of the second stator core, the end surfaces of the first connecting portion and the second connecting portion are respectively provided with convex portions and concave portions, the convex portion and concave portion of the first connecting portion respectively correspond to the concave portion and convex portion of the first connecting portion; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0072] Example 8, see Figure 8 The present invention discloses a stator fixing assembly, the stator fixing assembly includes a connecting piece, the connecting piece includes a first connecting curved piece and a second connecting curved piece, the first connecting curved piece and the second connecting curved piece are adjacent to each other along the same center of a circle, a protrusion is arranged on the end surface where the first connecting curved piece is connected to the second connecting curved piece, a recess is arranged on the end surface where the second connecting curved piece is connected to the first connecting curved piece, the protrusion cooperates with the recess to increase the contact area between the first connecting curved piece and the second connecting curved piece, and ensure that the first connecting curved piece and the second connecting curved piece are firmly connected; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0073] Example 9, see Fig. 9 The present invention discloses a motor, the motor comprising a stator fixing assembly, a rotor, a rotating shaft, a bearing and a casing, the stator fixing assembly comprising a stator, a connecting piece and a supporting piece, the stator is matched to be connected to the outer ring of the connecting piece, and the supporting piece is matched to be connected to the inner ring of the connecting piece; the casing comprises a casing body and an end cover, the casing body is provided with a casing inner ring, and the end cover is provided with an end cover inner ring; one end of the outer ring of the stator fixing assembly is matched to be connected to the casing inner ring, and the other end of the outer ring of the stator fixing assembly is matched to be connected to the inner ring of the end cover; bearings are respectively provided on the casing body and the end cover, the rotating shaft is provided with a rotor, and the rotating shaft passes through the bearing on the casing body and is connected with the bearing on the end cover; the rotor is arranged opposite to the left end face and / or the right end face of the stator fixing assembly; the rest is the same as any other embodiment or a combination of more than two embodiments of the present invention.

[0074] Example 10, see Fig.10The present invention discloses a motor, which comprises a stator fixing assembly, a rotor, a rotating shaft, a bearing and a housing, wherein the stator fixing assembly comprises a stator, a connecting member and a supporting member, wherein the inner ring of the connecting member comprises a first inner ring face portion, a second inner ring face portion and a third inner ring face portion, wherein the first inner ring face portion, the second inner ring face portion and the third inner ring face portion are sequentially adjacently combined, wherein the inner diameter of the first inner ring face portion is smaller than the inner diameter of the second inner ring face portion, and the inner diameter of the third inner ring face portion from one end to the other end of the third inner ring face portion gradually increases, wherein the outer ring of the connecting member comprises a first outer ring face portion, a second outer ring face portion, a third outer ring face portion, a fourth outer ring face portion and a fifth outer ring face portion, wherein the first outer ring face portion, the second outer ring face portion, the third outer ring face portion, the fourth outer ring face portion and the fifth outer ring face portion are sequentially adjacently combined, wherein the outer diameter of the first outer ring face portion is greater than the outer diameter of the second outer ring face portion, and the outer diameter of the first outer ring face portion is equal to the outer diameter of the fifth outer ring face portion; the outer diameter of the second outer ring face portion is greater than the outer diameter of the third outer ring face portion, and the outer diameter of the second outer ring face portion is equal to the outer diameter of the fourth outer ring face portion;

[0075] The support member includes a first support member, a second support member and a third support member. The first support member is connected to the second inner ring surface portion through the third inner ring surface portion. The outer diameter of the outer periphery of the first support member is slightly larger than the inner diameter of the second inner ring surface portion of the connecting member. The length of the outer periphery of the first support member is equal to the length of the second inner ring surface portion of the connecting member. The outer periphery of the first support member is connected to the second inner ring surface portion of the connecting member. The inner diameter of the outer periphery of the second support member increases gradually from one end to the other end of the outer periphery. The outer diameter of the outer periphery of the second support member is slightly larger than the inner diameter of the third inner ring surface portion of the connecting member. The outer periphery of the second support member is matched and connected with the third inner ring surface portion of the connecting member, the second support member passes through one end of the third inner ring surface portion to the other end of the third inner ring surface portion, and the left end surface of the second support member contacts the right end surface of the first support member; the inner diameter of the outer periphery of the third support member increases gradually from one end to the other end of the outer periphery, the outer diameter of the outer periphery of the third support member is slightly larger than the inner diameter of the third inner ring surface portion of the connecting member, the outer periphery of the third support member is matched and connected with the third inner ring surface portion of the connecting member, and the third support member passes through one end of the third inner ring surface portion to contact the right end surface of the second support member;

[0076] The casing includes a casing body and an end cover, wherein the casing body is provided with a casing inner ring, wherein the casing inner ring includes a first casing inner ring face portion, a second casing inner ring face portion and a third casing inner ring face portion, wherein the first casing inner ring face portion, the second casing inner ring face portion and the third casing inner ring face portion are sequentially adjacently combined, wherein the outer diameter of the first casing inner ring face portion is smaller than the outer diameter of the second casing inner ring face portion, and the second casing inner ring face portion corresponds to the second outer ring face portion; the outer diameter of the second casing inner ring face portion is smaller than the outer diameter of the third casing inner ring face portion, and the third casing inner ring face portion corresponds to the third outer ring face portion, so as to facilitate fixing the stator core of the motor;

[0077] An end cap inner ring is arranged inside the end cap, the end cap inner ring comprises a first end cap inner ring face portion and a second end cap inner ring face portion, the first end cap inner ring face portion and the second end cap inner ring face portion are adjacently combined, the outer diameter of the first end cap inner ring face portion is greater than the outer diameter of the second end cap inner ring face portion, and the first end cap inner ring face portion corresponds to the fourth outer ring face portion;

[0078] The stator comprises a plurality of stator cores and coils, wherein the stator core comprises a tooth portion and a connecting portion, wherein one end of the tooth portion of the stator core is respectively connected to the outer ring of the connecting member and arranged on the second outer ring face portion and the fourth outer ring face portion, and the other end of the tooth portion of the stator core is respectively connected to the shell inner ring of the shell body and the inner ring of the end cover and arranged on the second shell inner ring face portion of the shell inner ring and the first end cover inner ring face portion of the end cover inner ring;

[0079] Bearings are respectively arranged on the inner end faces of the shell body and the end cover, a rotor is arranged on the rotating shaft, and the rotating shaft passes through the bearing on the shell body and is connected with the bearing on the end cover; the rotor and the side end faces of the stator fixing assembly are arranged opposite to each other; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0080] Example 11, see Fig.11 The present invention discloses a motor, which comprises a stator fixing assembly, a rotor, a rotating shaft, a bearing and a housing, wherein the stator fixing assembly comprises a stator, a connecting member and a supporting member, wherein the inner ring of the connecting member comprises a first inner ring face portion, a second inner ring face portion, a third inner ring face portion, a fourth inner ring face portion and a fifth inner ring face portion, wherein the first inner ring face portion, the second inner ring face portion, the third inner ring face portion, the fourth inner ring face portion and the fifth inner ring face portion are sequentially adjacently combined, wherein the inner diameter of the first inner ring face portion is smaller than the inner diameter of the second inner ring face portion, wherein the inner diameter from one end of the third inner ring face portion to the other end of the third inner ring face portion gradually increases, wherein the end of the third inner ring face portion with a smaller inner diameter is equal to the inner diameter of the second inner ring face portion, wherein the inner diameter of the fourth inner ring face portion is larger than the inner diameter of the end portion of the third inner ring face portion, wherein the inner diameter from one end of the fifth inner ring face portion to the other end of the fifth inner ring face portion gradually increases, wherein the end of the fifth inner ring face portion with a smaller inner diameter is equal to the inner diameter of the fourth inner ring face portion;

[0081] The support member includes a first support member and a second support member;

[0082] The outer diameter of the outer periphery of the first support member is larger than the inner diameter of the second inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the first support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member;

[0083] The outer periphery of the first supporting member is connected to the second inner ring surface portion of the connecting member;

[0084] The outer diameter of the outer periphery of the second support member is larger than the inner diameter of the fourth inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the second support member is smaller than the inner diameter of the end portion of the fifth inner ring surface portion of the connecting member;

[0085] The outer periphery of the second supporting member is connected to the fourth inner ring surface portion of the connecting member;

[0086] The stator cooperates with the outer ring of the connecting piece;

[0087] The casing includes a casing body and an end cover, wherein a casing inner ring is arranged in the casing body, and an end cover inner ring is arranged in the end cover; one end of the outer ring of the stator fixing assembly is matched and connected to the casing inner ring, and the other end of the outer ring of the stator fixing assembly is matched and connected to the end cover inner ring; bearings are respectively arranged on the casing body and the end cover, a rotor is arranged on the rotating shaft, and the rotating shaft passes through the bearing on the casing body and is connected to the bearing on the end cover; the rest is the same as any other embodiment or a combination of two or more embodiments of the present invention.

[0088] The technical solutions in the embodiments of the present application will be clearly and completely described above in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and does not serve as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0089] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0090] In the description of the present application, it should be understood that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, left side, left end face, right, right side, right end face," "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words 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 cannot be understood as limiting the scope of protection of the present application; the directional words "inner circle, outer circle" refer to the inner and outer circles relative to the contour of the component itself.

[0091] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

Claims

1. A stator fixing assembly, characterized in that: It comprises a stator, a connecting member and a supporting member, wherein the supporting member is arranged inside the connecting member, and the stator is fixed at the outer end of the connecting member; The connecting piece comprises a plurality of connecting curved pieces, and the plurality of connecting curved pieces are adjacently combined along the same circle center to form an annular connecting piece; The support member is an integrally formed annular support member; The supporting member is cooperatively connected to the connecting curved member; The inner ring of the connecting piece includes a plurality of inner ring surface portions and an inner ring step portion; The inner ring step portion is formed on the inner ring of the connecting member; The outer ring of the connecting member includes a plurality of outer ring surface portions and an outer ring step portion; The outer ring step portion is formed on the outer ring of the connecting member; The outer ring step portion is located between adjacent outer ring surface portions among the plurality of outer ring surface portions; The inner ring surface of the connecting member includes a first inner ring surface, a second inner ring surface and a third inner ring surface. The first inner ring surface, the second inner ring surface and the third inner ring surface are sequentially adjacent to each other. The inner diameter of the first inner ring surface is smaller than the inner diameter of the second inner ring surface. The inner ring step portion is located between the first inner ring surface and the second inner ring surface. The inner diameter of the third inner ring surface increases gradually from one end to the other end of the third inner ring surface. The end with a smaller inner diameter of the third inner ring surface is equal to the inner diameter of the second inner ring surface. The outer ring surface of the connecting member includes a first outer ring surface, a second outer ring surface, a third outer ring surface, a fourth outer ring surface and a fifth outer ring surface, which are adjacently combined in sequence, the outer diameter of the first outer ring surface is larger than the outer diameter of the second outer ring surface, the outer diameter of the second outer ring surface is larger than the outer diameter of the third outer ring surface; the outer diameter of the fourth outer ring surface is larger than the outer diameter of the third outer ring surface, and the outer diameter of the fifth outer ring surface is larger than the outer diameter of the fourth outer ring surface; The outer diameter of the outer periphery of the support member is larger than the inner diameter of the second inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the support member is smaller than the inner diameter of the third inner ring surface portion of the connecting member; The outer periphery of the support member is connected to the second inner ring surface portion of the connecting member; The stator includes a plurality of stator cores and coils, the stator core includes a tooth portion and a connecting portion, the tooth portion of the stator core is connected to the outer ring of the connecting member and is arranged on the second outer ring surface portion and the fourth outer ring surface portion, and the stator core is fixedly connected to the connecting member through the second outer ring surface portion and the fourth outer ring surface portion.

2. The stator fixing assembly according to claim 1, characterized in that: The inner diameter distance from one end to the other end of the third inner ring surface portion of the connecting member is smaller than the inner diameter distance from the first inner ring surface portion to the second inner ring surface portion of the connecting member.

3. The stator fixing assembly according to claim 1, characterized in that: The stator core includes a first stator core and a second stator core. The first stator core includes a first tooth portion and a first connecting portion. The second stator core includes a second tooth portion and a second connecting portion. The first stator core passes through the coil via the first connecting portion and is connected to the second connecting portion of the second stator core.

4. The stator fixing assembly according to claim 3, characterized in that: A convex portion and a concave portion are respectively provided on end surfaces of the first connection portion and the second connection portion, and the convex portion and the concave portion of the first connection portion correspond to the concave portion and the convex portion of the first connection portion, respectively.

5. The stator fixing assembly according to claim 1, characterized in that: The inner ring surface of the connecting member includes a first inner ring surface, a second inner ring surface, a third inner ring surface, a fourth inner ring surface and a fifth inner ring surface. The first inner ring surface, the second inner ring surface, the third inner ring surface, the fourth inner ring surface and the fifth inner ring surface are sequentially adjacent to each other. The inner diameter of the first inner ring surface is smaller than the inner diameter of the second inner ring surface. The inner diameter from one end of the third inner ring surface to the other end of the third inner ring surface gradually increases. The end with a smaller inner diameter of the third inner ring surface is equal to the inner diameter of the second inner ring surface. The inner diameter of the fourth inner ring surface is larger than the inner diameter of the end of the third inner ring surface. The inner diameter from one end of the fifth inner ring surface to the other end of the fifth inner ring surface gradually increases. The end with a smaller inner diameter of the fifth inner ring surface is equal to the inner diameter of the fourth inner ring surface. The support member includes a first support member and a second support member; The outer diameter of the outer periphery of the first support member is larger than the inner diameter of the second inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the first support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member; The outer periphery of the first supporting member is connected to the second inner ring surface portion of the connecting member; The outer diameter of the outer periphery of the second support member is larger than the inner diameter of the fourth inner ring surface portion of the connecting member, and the outer diameter of the outer periphery of the second support member is smaller than the inner diameter of the end portion of the fifth inner ring surface portion of the connecting member; The outer periphery of the second supporting member is connected to the fourth inner ring surface portion of the connecting member.

6. The stator fixing assembly according to claim 1, characterized in that: The support member includes a first support member and a second support member; The outer diameter of the outer periphery of the first support member is slightly larger than the inner diameter of the second inner ring surface portion of the connecting member, the length of the outer periphery of the first support member is equal to the length of the second inner ring surface portion of the connecting member, the outer diameter of the outer periphery of the first support member is smaller than the inner diameter of the end portion of the third inner ring surface portion of the connecting member, and the outer periphery of the first support member is connected to the second inner ring surface portion of the connecting member; The outer diameter of the outer periphery of the second support member is slightly larger than the inner diameter of the third inner ring surface portion of the connecting member, and the inner diameter of the outer periphery of the second support member gradually increases from one end to the other end. The length of the outer periphery of the second support member is equal to the length of the third inner ring surface portion of the connecting member, and the outer periphery of the second support member is connected to the third inner ring surface portion of the connecting member.

7. The stator fixing assembly according to claim 1, characterized in that: The connecting piece includes a first connecting curved piece and a second connecting curved piece, the first connecting curved piece and the second connecting curved piece are adjacent to each other along the same center of a circle, a protrusion is arranged on the end surface where the first connecting curved piece is connected to the second connecting curved piece, and a recess is arranged on the end surface where the second connecting curved piece is connected to the first connecting curved piece, the protrusion cooperates with the recess to increase the contact area between the first connecting curved piece and the second connecting curved piece, thereby ensuring that the first connecting curved piece and the second connecting curved piece are firmly connected.

8. A motor, characterized in that: It comprises the stator fixing assembly and the casing as described in any one of claims 1 to 7.

9. The motor according to claim 8, characterized in that: The housing comprises a housing body and an end cover, wherein a housing inner ring is arranged in the housing body, wherein the housing inner ring comprises a first housing inner ring face portion, a second housing inner ring face portion and a third housing inner ring face portion, wherein the first housing inner ring face portion, the second housing inner ring face portion and the third housing inner ring face portion are sequentially adjacently combined, wherein the outer diameter of the first housing inner ring face portion is smaller than the outer diameter of the second housing inner ring face portion, and the second housing inner ring face portion corresponds to the second outer ring face portion; the outer diameter of the second housing inner ring face portion is smaller than the outer diameter of the third housing inner ring face portion, and the third housing inner ring face portion corresponds to the third outer ring face portion; An end cover inner ring is arranged inside the end cover, and the end cover inner ring includes a first end cover inner ring surface portion and a second end cover inner ring surface portion, the first end cover inner ring surface portion and the second end cover inner ring surface portion are adjacent to each other, the outer diameter of the first end cover inner ring surface portion is larger than the outer diameter of the second end cover inner ring surface portion, and the first end cover inner ring surface portion corresponds to the fourth outer ring surface portion.

10. A fixing method, implemented based on the stator fixing assembly according to any one of claims 1 to 7, characterized in that: The method comprises: A plurality of connecting curved pieces are adjacently combined along the same center of a circle to form a ring-shaped connecting piece; Then, multiple stator cores are covered with coils; The stator core is matched and set to the outer ring of the connecting piece, and then the coils on the stator core are connected to form a relatively stable stator fixing structure; Then the stator fixing structure is installed in the casing, and the other end of the stator fixing structure is connected to the inner ring of the casing body of the casing; The support member is arranged inwardly along one end of the inner circle of the connecting member to disperse the connecting curved members of the connecting member, and the connecting member and the support member are connected to form a stable fixed structure; Finally, the end cover is installed, and the shell teeth at the other end of the stator fixing structure are connected to the inner ring of the end cover to stabilize the stator in the motor.

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