Stator device and motor

Abstract

The embodiment of the utility model discloses a stator device and a motor. The stator device includes: a bracket having an annular portion; the iron core comprises at least three iron core single bodies; the at least three iron core monomers are radially arranged along the circumferential direction of the annular part; a wire slot is formed between every two adjacent iron core monomers; each iron core monomer is provided with an inner surface facing the axis side; and the connecting piece enables the inner surface of the iron core monomer to be attached to the outer surface of the annular part.

Description

Technical Field

[0001] The present application relates to the field of stator technology, and in particular to a stator device and a motor. Background Art

[0002] Motors are devices that people often use. Motors generally include a stator structure and a rotor structure. In related technologies, the iron core structure of the stator structure is generally made into an integral structure, which makes the stator structure inconvenient to assemble and affects the adaptability of the motor. Utility Model Content

[0003] In view of this, embodiments of the present application hope to provide a stator device and a motor.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] An embodiment of the present application provides a stator device, including:

[0006] a stent having an annular portion;

[0007] The iron core comprises at least three iron core monomers; the at least three iron core monomers are radially arranged along the circumference of the annular portion; a wire groove is provided between two adjacent iron core monomers; the iron core monomers have an inner surface facing the axis side;

[0008] The connector makes the inner surface of the core unit and the outer surface of the annular portion fit together.

[0009] In some optional implementations, the core unit has a first connecting portion; the bracket has a second connecting portion corresponding to the position of the first connecting portion; and the connecting member is arranged between the first connecting portion and the second connecting portion.

[0010] In some optional implementations, the connecting member is in contact with the first connecting portion, and the connecting member is used to provide a radial force toward the axis side to the first connecting portion; and / or,

[0011] The connecting members are connected to the first connecting portion and the second connecting portion respectively.

[0012] In some optional implementations, the first connecting portion is located on the inner side of the annular portion; the second connecting portion is arranged on the side of the first connecting portion away from the axis, and the connecting member is arranged between the first connecting portion and the second connecting portion; the connecting member is in contact with the first connecting portion, and the connecting member is used to provide a radial force toward the axis side to the first connecting portion.

[0013] In some optional implementations, the second connecting portion includes the inner surface of the annular portion; or,

[0014] The second connecting portion includes a first boss provided on the end surface of the annular portion; or

[0015] The second connecting portion includes a second boss disposed on the fixing portion of the bracket.

[0016] In some optional implementations, the first connection portion includes a first protrusion, and the connection member is inserted between the first protrusion and the second connection portion; or,

[0017] The first connecting portion includes a first connecting hole; the first part of the connecting member is inserted into the first connecting hole and contacts the surface of the first connecting hole close to the axis; the second part of the connecting member is located between the first connecting hole and the second connecting portion.

[0018] In some optional implementations, the annular portion is provided with at least three openings along the circumferential direction, and the first connecting portion passes through the openings and is located on the inner side of the annular portion.

[0019] In some optional implementations, a portion of the connector located between the first connector and the second connector can adjust its length based on an external force so that the connector contacts the first connector and the second connector respectively; or

[0020] The stator device further includes a tensioning member, at least a portion of which is inserted between the second connecting portion and the connecting member, so that the tensioning member contacts the second connecting portion and the connecting member respectively.

[0021] In some optional implementations, the first connecting portion is located on the outside of the annular portion; the second connecting portion is arranged on the side of the first connecting portion close to the axis, and the connecting member is arranged between the first connecting portion and the second connecting portion; the connecting member is in contact with the first connecting portion and is used to provide a radial force toward the axis side to the first connecting portion.

[0022] In some optional implementations, the first connecting portion includes a second protruding portion, and the connecting member is clamped outside the second protruding portion and the second connecting portion; or,

[0023] The first connecting portion includes a second connecting hole; the connecting piece is inserted into the second connecting hole; and the connecting piece is clamped between the wall of the second connecting hole on the side close to the axis and the outside of the second connecting portion.

[0024] In some optional implementations, the core unit has at least two first connection portions spaced apart in the axial direction, and the connecting member is disposed between the at least two first connection portions and the second connection portion.

[0025] In some optional implementations, the annular portion has two adjacent annular monomers in the axial direction; the core monomer has two first connecting portions spaced apart at both ends of the axial direction, and the two first connecting portions correspond to the positions of the two annular monomers;

[0026] The bracket has two second connecting parts corresponding to the positions of the two first connecting parts respectively;

[0027] The connecting member is arranged between the two first connecting parts and the two second connecting parts.

[0028] In some optional implementations, the outer surface of the annular portion is the outermost surface of the annular portion in the circumferential direction;

[0029] The outer surface of the annular portion is formed by an axial extension of a circle, and the inner surface of the core unit is an arc surface; or, the inner surface of the core unit is a plane, and the area where the outer surface of the annular portion contacts the inner surface of the core unit is a plane.

[0030] In some optional implementations, the annular portion has a first flange and a second flange at both ends in the axial direction; and a portion of the core unit is inserted between the first flange and the second flange.

[0031] In some optional implementations, the outer surface of the core unit is an arc surface, the bracket further includes a fixing portion located in the space defined by the annular portion, and the fixing portion includes a third connecting hole in the axial direction;

[0032] The stator device further comprises:

[0033] A conductive wire, at least partially wound around the tooth slots of the core unit;

[0034] The shaft body is partially locked in the third connecting hole.

[0035] An embodiment of the present application further provides a motor, characterized in that it includes the stator device and a rotor described in the embodiment of the present application, and the rotor is sleeved outside the stator device.

[0036] The stator device of the present application has an iron core including at least three iron core units, and a wire slot is provided between two adjacent iron core units. At least a portion of the conductive wires of the stator device can be quickly wound around the outside of the iron core units, and then the iron core units with conductive wires are connected to the bracket, thereby enabling convenient and quick winding of the iron core and easy assembly of the stator device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is an optional structural diagram of the stator device in the embodiment of the present application;

[0038] Figure 2 Schematic diagram of an optional partial structure of a stator device in an embodiment of the present application;

[0039] Figure 3 This is an optional structural cross-sectional view of the stator device in the embodiment of the present application;

[0040] Figure 4 for Figure 3 Schematic diagram of the local structure;

[0041] Figure 5 for Figure 3 An optional structural diagram of the middle iron core unit;

[0042] Figure 6 for Figure 5 A schematic diagram of the structure of the single piece of the middle iron core;

[0043] Figure 7 for Figure 3 Schematic diagram of the structure of the connecting parts;

[0044] Figure 8 This is another optional partial structural diagram of the stator device in the embodiment of the present application;

[0045] Figure 9 This is another optional partial structural diagram of the stator device in the embodiment of the present application;

[0046] Figure 10 Schematic diagram of another optional partial structure of the stator device in the embodiment of the present application;

[0047] Figure 11 This is another optional partial structural diagram of the stator device in the embodiment of the present application.

[0048] Figure markings: 100, bracket; 110, annular portion; 111, outer surface of the annular portion; 112, opening; 113, inner surface of the annular portion; 114, first flange; 115, second flange; 116, annular monomer; 120, fixing portion; 121, third connecting hole; 122, plate-shaped portion; 123, cylindrical portion; 130, second connecting portion; 200, iron core; 201, wire groove; 210, iron core monomer; 211, first connecting portion; 2111, first connecting hole; 2112, first protrusion; 2113, second connecting hole; 2114, second protrusion; 212, inner surface of the iron core monomer; 213, tooth groove; 214, monomer piece; 215, outer surface of the iron core monomer; 220, wire; 300, connector; 400, shaft. DETAILED DESCRIPTION

[0049] The technical solution of the present application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0050] In the description of the embodiments of this application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] It should be noted that the terms "first, second, and third" in the embodiments of the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understood that the terms "first, second, and third" can be interchanged to represent a specific order or precedence where permitted. It should be understood that the objects distinguished by "first, second, and third" can be interchanged where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0052] The following combination Figures 1 to 11 The stator device described in the embodiments of the present application is described in detail.

[0053] The stator assembly includes a bracket 100, an iron core 200, and a connector 300. The bracket 100 has an annular portion 110. The iron core 200 includes at least three iron core units 210. The at least three iron core units 210 are radially arranged along the circumference of the annular portion 110. A wire slot 201 is provided between adjacent iron core units 210. The iron core units 210 have inner surfaces facing the axis. The connector 300 aligns the inner surfaces 212 of the iron core units with the outer surface 111 of the annular portion, ensuring that the outer surfaces 215 of the at least three iron core units 210 are at the same distance from the axis.

[0054] In the related art, the core structure of the stator structure is generally made into a monolithic structure, which makes the stator structure inconvenient to assemble. For example, when winding the monolithic core structure, the wire needs to enter the slot from the slot on the outside of the monolithic core structure, which is inconvenient and difficult to arrange neatly. The space in the slot is also not fully utilized, resulting in low slot utilization and slot fill rate, and low motor performance. In the stator device of the present application, the core 200 includes at least three core units 210, and a wire slot 201 is provided between two adjacent core units 210. Here, at least a portion of the wire 220 of the stator device can be quickly wound around the outside of the core unit 210, and then the core unit 210 with the wire 220 is connected to the bracket 100, thereby enabling convenient and quick winding of the core 200. At the same time, because it is not restricted by the slot, the wire 220 can also be wound around the wire slot 201 of the core 200, which can increase the cross-sectional area of ​​the wire 220 in the wire slot 201, thereby greatly improving the performance of the motor. In addition, the connector 300 can make the inner surface 212 of the core unit and the outer surface 111 of the annular portion fit together so that the outer surfaces 215 of at least three core units are at the same distance from the axis, thereby greatly reducing the outer diameter error of the core 200 formed by at least three core units 210, making the gap between the stator device and the rotor more uniform in the circumferential direction, and improving the stability of the rotor rotation.

[0055] In the embodiment of the present application, the structure of the bracket 100 is not limited. Figure 1 and Figure 2 As shown, the bracket 100 may include an annular portion 110 and a fixing portion 120 . The annular portion 110 is used to define the position of the iron core 200 , and the fixing portion 120 is used to connect with the shaft 400 of the stator device.

[0056] As an example, Figure 2 and Figure 3 As shown, the bracket 100 may further include a fixing portion 120 located within the space defined by the annular portion 110. The fixing portion 120 may have a third connection hole 121 in the axial direction. The stator assembly may further include a wire 220 and a shaft 400. At least a portion of the wire 220 is wound around the tooth slots 213 of the core unit 210. A portion of the shaft 400 is retained within the third connection hole 121.

[0057] Here, the shape of the fixing portion 120 is not limited. For example, the fixing portion 120 may be a plate-shaped structure, and the fixing portion 120 may be provided with a third connection hole 121. Figure 2 and Figure 3As shown, the fixing portion 120 may include two plate-like portions 122 and a cylindrical portion 123 arranged adjacent to each other in the axial direction, the inner cavity of the cylindrical portion 123 defines a third connecting hole 121, and the two plate-like portions 122 are fixed to the outer side of the cylindrical portion 123. The cylindrical portion 123 can increase the axial connection length between the fixing portion 120 and the shaft body 400. The two plate portions can reduce the volume and weight of the fixing portion 120 and improve the connection strength of the fixing portion 120.

[0058] In the embodiment of the present application, the outer surface 111 of the annular portion is the surface of the annular portion 110 facing away from the axial direction, where the axial direction is the axis of the stator assembly. As an example, the axial direction is the axis of the shaft body 400. The inner surface 113 of the annular portion is the surface of the annular portion 110 facing the axial direction. The outer surface 111 and the inner surface 113 of the annular portion are annular surfaces.

[0059] The shape of the outer surface 111 of the annular portion is not limited. The outer surface 111 of the annular portion is the outermost surface of the annular portion 110 in the circumferential direction. The outer surface 111 of the annular portion is the non-concave surface of the annular portion 110 in the circumferential direction, that is, the outer surface 111 of the annular portion does not include the inner concave surface of the annular portion 110 in the circumferential direction. For example, the outer surface 111 of the annular portion can be formed by an axial extension of a circle, where the outer surface 111 of the annular portion is an arc surface. For another example, the outer surface 111 of the annular portion can include an arc surface and a plane. For another example, the outer surface 111 of the annular portion is an annular structure formed by connecting multiple planes.

[0060] In the embodiment of the present application, the number of core monomers 210 is the same as the number of wire slots 201 of the core 200, and the wire slots 201 of the core 200 are defined between two adjacent core monomers 210; each core monomer 210 is a tooth of the core 200, and most or all of each core monomer 210 is located outside the annular portion 110; the portion of each core monomer 210 close to the annular portion 110 is the yoke of the core monomer 210, and the portion of each core monomer 210 away from the annular portion 110 is the tooth of the core monomer 210. The wire slots 201 can be located at the tooth portion. Here, the outer side of the core monomer 210 may or may not have tooth slots 213, as long as the wire slots 201 of the core 200 are defined between two adjacent core monomers 210. As Figure 5 and Figure 6 As shown, each core unit 210 may include at least two monomer pieces 214 , and the at least two monomer pieces 214 are stacked together in the axial direction to form the core unit 210 .

[0061] The at least three core units 210 may be evenly arranged along the circumference of the annular portion 110 . Of course, in some embodiments, the at least three core units 210 may also be unevenly arranged along the circumference of the annular portion 110 .

[0062] When the outer side of the core unit 210 has the slots 213, the slots 213 on the outer side of the core unit 210 are used to define the winding position of the wire 220 and to accommodate the wire 220. When the core unit 210 is not assembled to the bracket 100, the outer side of the core unit 210 is an open space, in which case the wire 220 can be quickly and conveniently wound around the core unit 210.

[0063] The core monomer 210 has an inner surface facing the axis side and an outer surface facing away from the axis direction, and the outer surface 215 of the core monomer is a circular arc surface. The shape of the inner surface 212 of the core monomer is not limited, as long as the inner surface 212 of the core monomer can contact the outer surface 111 of the annular portion. The shape of the contact area between the outer surface 111 of the annular portion and the inner surface 212 of the core monomer can be the same or the same. When the shape of the contact area between the outer surface 111 of the annular portion and the inner surface 212 of the core monomer is the same, the contact area between the outer surface 111 of the annular portion and the inner surface 212 of the core monomer can be increased, thereby improving the strength of the connection between the bracket 100 and the core monomer 210.

[0064] As an example, the outer surface 111 of the annular portion can be formed by axially extending a circle. Here, the outer surface 111 of the annular portion is an arc surface. Correspondingly, the inner surface 212 of the core unit can also be an arc surface with the same or substantially the same diameter. Therefore, the contact between the outer surface 111 of the annular portion and the inner surface 212 of the core unit can reduce the error in the inner diameter of the core 200 formed by at least the core unit 210, allowing at least three core units 210 to form a circular core 200 structure. When the outer surface 111 of the annular portion can be formed by axially extending a circle, the outer surface 111 of the annular portion can be formed in a single machining process using a single tool, thereby greatly improving the overall dimensional accuracy of the outer surface 111 of the annular portion. When the inner surfaces 212 of at least two core units align with the outer surface 111 of the annular portion of the same reference, the accuracy of the distance between the outer surface 215 of at least three core units 210 and the axis can be greatly improved.

[0065] As another example, the inner surface 212 of the core unit is a plane, and the area where the outer surface 111 of the annular portion contacts the inner surface 212 of the core unit can be a plane. Here, the outer surface 111 of the annular portion can be an annular surface formed by multiple planes; of course, the outer surface 111 of the annular portion can also include an arc surface located between two planes. Here, the plane of the annular portion 110 can be a plane formed by a chord on a full circle extending axially.

[0066] In the embodiment of the present application, the connector 300 can be connected to the bracket 100 and the core unit 210 respectively, so that the inner surface 212 of the core unit contacts the outer surface 111 of the annular portion. Here, the connector 300 can also provide a radial force toward the axis side of the core unit 210, so that the inner surface 212 of the core unit is always pressed against the outer surface 111 of the annular portion.

[0067] Of course, the connector 300 may not be connected to at least one of the bracket 100 and the core unit 210. For example, the connector 300 may be in contact with the core unit 210 and is used to provide a radial force toward the axis of the core unit 210, so that the inner surface 212 of the core unit is always pressed against the outer surface 111 of the annular portion; thereby, the inner surface 212 of the core unit and the outer surface 111 of the annular portion are always in contact. Here, the connector 300 may be in contact with the bracket 100 or may be spaced apart from the bracket 100.

[0068] For example, the connector 300 can be connected to the bracket 100 and the core unit 210 respectively by bonding, clamping, welding, etc. As one example, the connector 300 can be an adhesive provided between the circumference of the inner surface 212 of the core unit and the annular portion 110. As another example, the connector 300 can be a weld provided between the circumference of the inner surface 212 of the core unit and the annular portion 110.

[0069] In some optional implementations of the embodiments of the present application, the core unit 210 may have a first connection portion 211; the bracket 100 may have a second connection portion 130 corresponding to the position of the first connection portion 211; and the connecting member 300 is arranged between the first connection portion 211 and the second connection portion 130.

[0070] In this implementation, the connector 300 can be connected to the first connection part 211 and the second connection part 130 respectively, so that the inner surface 212 of the core unit and the outer surface 111 of the annular part fit together. Of course, the connector 300 may not be connected to at least one of the first connection part 211 and the second connection part 130. For example, the connector 300 is in contact with the first connection part 211, and the connector 300 is used to provide a radial force toward the axis side to the core unit 210, so that the inner surface 212 of the core unit is always pressed against the outer surface 111 side of the annular part; thereby, the inner surface 212 of the core unit and the outer surface 111 of the annular part are always in a fit state; here, the connector 300 can be in contact with the second connection part 130, or it can be spaced apart from the second connection part 130. For another example, the connector 300 can be connected to the first connection part 211 and the second connection part 130 respectively by bonding, clamping, welding, etc.

[0071] In this embodiment, the position of the first connecting portion 211 is not limited. The first connecting portion 211 can be located inside or outside the annular portion 110. The structure of the first connecting portion 211 is not limited. For example, the first connecting portion 211 can be a block-shaped structure. For another example, the first connecting portion 211 can include a hole-shaped structure.

[0072] The number of the first connection parts 211 is not limited. Figure 5 As shown, the core unit 210 has at least two first connecting portions 211 spaced apart in the axial direction, and the connector 300 is disposed between the at least two first connecting portions 211 and the second connecting portion 130 to improve the connection strength between the core unit 210 and the bracket 100. Of course, the core unit 210 may also have only one first connecting portion 211.

[0073] In this implementation, if Figure 2 As shown, the annular portion 110 can have two adjacent annular monomers 116 in the axial direction; the core monomer 210 can have two first connecting portions 211 spaced apart at both ends of the axial direction, with the two first connecting portions 211 corresponding to the positions of the two annular monomers 116; the bracket 100 can have two second connecting portions 130 corresponding to the positions of the two first connecting portions 211, respectively; and the connector 300 is disposed between the two first connecting portions 211 and the two second connecting portions 130, thereby improving the connection strength between the core monomer 210 and the bracket 100. When the bracket 100 includes two annular monomers 116, the fixing portion 120 can be located adjacent to the two annular monomers 116. Here, the two annular monomers 116 can be connected by the fixing portion 120. Of course, the bracket 100 can also have a single annular monomer 116 in the axial direction, that is, the annular portion 110 is a single, integral annular structure.

[0074] In this embodiment, the position of the second connecting portion 130 is not limited. The second connecting portion 130 can be located on the annular portion 110 or the fixed portion 120. The structure of the second connecting portion 130 is not limited. For example, the second connecting portion 130 can be a block-shaped structure. For another example, the second connecting portion 130 can include a hole-shaped structure.

[0075] In this embodiment, the structure of the connector 300 is not limited. For example, the connector 300 can be a block structure, or a strip structure. For another example, the connector 300 can also be a clip structure.

[0076] In example one, the first connection portion 211 is located on the inner side of the annular portion 110; the second connection portion 130 is arranged on the side of the first connection portion 211 away from the axis, and the connecting member 300 is arranged between the first connection portion 211 and the second connection portion 130; the connecting member 300 is in contact with the first connection portion 211, and the connecting member 300 is used to provide a radial force toward the axis side to the first connection portion 211 so that the inner surface 212 of the core unit and the outer surface 111 of the annular portion fit together.

[0077] In Example 1, most of the core unit 210 is located outside the annular portion 110 , and the first connecting portion 211 of the core unit 210 is located inside the annular portion 110 .

[0078] In Example 1, the structure of the first connecting portion 211 is not limited, as long as the connecting member 300 can provide a radial force toward the axis of the first connecting portion 211, so that the inner surface 212 of the core unit is pressed against the outer surface 111 of the annular portion. For example, the first connecting portion 211 includes a first connecting hole 2111; the first portion of the connecting member 300 is inserted into the first connecting hole 2111 and contacts the surface of the first connecting hole 2111 on the side close to the axis; the second portion of the connecting member 300 is located between the first connecting hole 2111 and the second connecting portion 130. For another example, the first connecting portion 211 includes a first protrusion 2112, and the connecting member 300 is inserted between the first protrusion 2112 and the second connecting portion 130.

[0079] In Example 1, the structure of the second connecting portion 130 is not limited. For example, the second connecting portion 130 may include the inner surface 113 of the annular portion. In another example, the second connecting portion 130 may include a first boss disposed on the end surface of the annular portion 110. In another example, the second connecting portion 130 may include a second boss disposed on the fixing portion 120 of the bracket 100.

[0080] In Example 1, the structure of the connecting member 300 is not limited, as long as it can provide a radial force toward the axis side to the first connecting portion 211 .

[0081] In the first structure of the connector 300, the length of the portion of the connector 300 located between the first connecting portion 211 and the second connecting portion 130 can be adjusted based on an external force so that the connector 300 contacts the first connecting portion 211 and the second connecting portion 130, respectively. Due to manufacturing errors, the length of the connector 300 located between the first connecting portion 211 and the second connecting portion 130 can be set relatively short, allowing the connector 300 to easily contact the first connecting portion 211 during assembly. To enable the connector 300 to contact the second connecting portion 130, the connector 300 can be deformed by an external force to increase its length, thereby enabling the connector 300 to contact the second connecting portion 130. Alternatively, the length of the connector 300 located between the first connecting portion 211 and the second connecting portion 130 can be set relatively long, allowing the connector 300 to be inserted between the first connecting portion 211 and the second connecting portion 130 during assembly.

[0082] In the second configuration of the connector 300, the stator assembly may further include a tensioning member, at least partially interposed between the second connecting portion 130 and the connector 300, such that the tensioning member contacts the second connecting portion 130 and the connector 300, respectively. The tensioning member and the connector 300, in turn, provide a radial force toward the axis of the first connecting portion 211. Due to manufacturing tolerances, the length of the connector 300 between the first and second connecting portions 211, 130 may be relatively short. During assembly, the connector 300 can be easily interposed between the first and second connecting portions 211, 130, and contact the first connecting portion 211. A gap exists between the connector 300 and the second connecting portion 130. By interposing at least partially between the connector 300 and the second connecting portion 130, the tensioning member can be brought into contact with the second connecting portion 130 and the connector 300, respectively. The shape of the tensioning member is not limited. For example, the tensioning member may be a wedge-shaped structure. For another example, the cross section of the tensioning member may be trapezoidal.

[0083] For example, Figure 3 、 Figure 4 and Figure 5 As shown, the first connecting part 211 includes a first connecting hole 2111, the second connecting part 130 is the inner surface 113 of the annular part, the first part of the connecting member 300 is inserted into the first connecting hole 2111 and contacts the surface of the first connecting hole 2111 close to the axis side; the second part of the connecting member 300 is located between the first connecting hole 2111 and the second connecting part 130, and the connecting member 300 is used to provide a radial force toward the axis side to the wall of the first connecting hole 2111 so that the inner surface 212 of the core unit is pressed against the outer surface 111 side of the annular part.

[0084] Here, the second connecting portion 130 is the inner surface 113 of the annular portion. Using the inner surface 113 of the annular portion as the second connecting portion 130 can significantly simplify the structure of the stent 100. Of course, the second connecting portion 130 can also include a first boss provided on the end surface of the annular portion 110. Alternatively, the second connecting portion 130 can also include a second boss provided on the fixing portion 120 of the stent 100.

[0085] Here, the structure of the connector 300 is not limited, as long as the connector 300 can provide a radial force toward the axis side to the first connecting portion 211 so that the inner surface 212 of the core unit is pressed against the outer surface 111 of the annular portion.

[0086] As an example, Figure 4 and Figure 7 As shown, the connector 300 can be a positioning pin, the middle of which can be easily inserted into the first connecting hole 2111, and the two ends of the positioning pin are deformed under the action of an external force, and the length between the first connecting hole 2111 and the inner surface 113 of the annular portion is increased, so that the middle of the positioning pin contacts the surface of the first connecting hole 2111 on the side close to the axis, and the two ends of the positioning pin contact the inner surface 113 of the annular portion; for example, the two ends of the positioning pin are deformed by hitting them with a hammer, so that the middle of the positioning pin contacts the surface of the first connecting hole 2111 on the side close to the axis, and the two ends of the positioning pin are deformed and contact the inner surface 113 of the annular portion. As another example, the connector 300 can be a strip-shaped structure, and the two ends of the connector 300 can be bent by an external force to contact the inner surface 113 of the annular portion, and the middle of the connector 300 contacts the surface of the first connecting hole 2111 on the side close to the axis.

[0087] As another example, the length of the connecting member 300 between the first connecting hole 2111 and the inner surface 113 of the annular portion can be set to be relatively short. During the assembly process, the connecting member 300 can be easily inserted into the first connecting hole 2111. Here, there is a gap between the connecting member 300 and the inner surface 113 of the annular portion. By inserting at least a portion of the tensioning member between the inner surface 113 of the annular portion and the connecting member 300, the tensioning member can be brought into contact with the inner surface 113 of the annular portion and the connecting member 300 respectively.

[0088] For example, Figure 8 and Figure 9 As shown, the first connecting portion 211 may include a first protrusion 2112, the second connecting portion 130 is the inner surface 113 of the annular portion, and the connecting member 300 is inserted between the first protrusion 2112 and the inner surface 113 of the annular portion. The connecting member 300 is used to provide a radial force toward the axis side to the first protrusion 2112 so that the inner surface 212 of the core unit is pressed against the outer surface 111 side of the annular portion.

[0089] The structure of the second connection portion 130 here is similar to the structure of the second connection portion 130 described above, and will not be repeated here.

[0090] The structure of the connecting member 300 here is similar to the structure of the connecting member 300 described above, and will not be repeated here.

[0091] As an example, Figure 8 and Figure 9 As shown, the connector 300 can be a block-shaped structure. The connector 300 is deformed by an external force so that the connector 300 contacts the first protrusion 2112 and the inner surface 113 of the annular portion, respectively. For example, the connector 300 is deformed by striking the connector 300 with a hammer. As another example, the connector 300 can be a frame-shaped structure, or the connector 300 can be an annular structure. The connector 300 can be deformed by an external force so that the connector 300 contacts the first protrusion 2112 and the inner surface 113 of the annular portion, respectively.

[0092] In Example 1, if Figure 2 As shown, the annular portion 110 may be provided with at least three openings 112 along the circumferential direction, and the first connecting portion 211 may pass through the openings 112 and be located inside the annular portion 110 .

[0093] Here, the number of openings 112 may be the same as the number of core monomers 210. The first connection portion 211 of each core monomer 210 may pass through one opening 112. Of course, the number of openings 112 may also be twice the number of core monomers 210, such as Figure 2 Here, each core monomer 210 may include two first connecting portions 211 , and each first connecting portion 211 passes through an opening 112 .

[0094] Here, the openings 112 are also used to define the installation position of the core unit 210 in the circumferential direction of the annular portion 110. By having at least three openings 112, each core unit 210 can be located at a specific position along the circumferential direction of the annular portion 110.

[0095] Of course, the annular portion 110 may also not be provided with the opening 112. Here, the first connecting portion 211 can be located on the inner side of the annular portion 110 through one end of the annular portion 110; here, each core unit 210 can be located through the positioning mark on the annular portion 110; or, the positioning protrusion limits the circumferential installation position of the core unit 210 on the annular portion 110.

[0096] Example 2: The first connection part 211 is located on the outside of the annular part 110; the second connection part 130 is arranged on the side of the first connection part 211 close to the axis, and the connecting member 300 is arranged between the first connection part 211 and the second connection part 130; the connecting member 300 is in contact with the first connection part 211 and is used to provide a radial force toward the axis side to the first connection part 211, so that the inner surface 212 of the core unit is pressed against the outer surface 111 side of the annular part.

[0097] In the second example, the core unit 210 is entirely located outside the annular portion 110 .

[0098] In Example 2, the structure of the first connecting portion 211 is not limited, as long as the connecting member 300 can provide a radial force toward the axis of the first connecting portion 211, thereby pressing the inner surface 212 of the core unit against the outer surface 111 of the annular portion. For example, the first connecting portion 211 includes a second connecting hole 2113; the connecting member 300 is inserted into the second connecting hole 2113; and the connecting member 300 is clamped between the wall of the second connecting hole 2113 on the side closest to the axis and the outside of the second connecting portion 130. For another example, the first connecting portion 211 includes a second protrusion 2114, and the connecting member 300 is clamped between the second protrusion 2114 and the outside of the second connecting portion 130.

[0099] In Example 2, the structure of the second connection portion 130 is similar to that of the second connection portion 130 in Example 1, and will not be described in detail here.

[0100] In Example 2, the structure of the connector 300 is similar to that of the connector 300 in Example 1 above, and will not be described in detail here.

[0101] As an example, Figure 10 As shown, the first connecting portion 211 includes a second connecting hole 2113, the second connecting portion 130 includes an inner surface 113 of the annular portion, and the connecting member 300 can be a strip structure. The middle part of the connecting member 300 can be easily inserted into the second connecting hole 2113. The two ends of the connecting member 300 are bent and deformed under the action of external force and contact the inner surface 113 of the annular portion, so that the middle part of the connecting member 300 contacts the surface of the second connecting hole 2113 close to the axis, thereby pressing the inner surface of the core monomer 210 tightly against the annular portion through the connecting member 300. The outer surface 111 side of the part; here, the connecting piece 300 is clamped between the wall of the second connecting hole 2113 close to the axis side and the outside of the second connecting part 130; here, the connecting piece 300 can be further deformed at the contact end with the inner surface 113 of the annular part so that the middle part of the connecting piece 300 contacts the surface of the second connecting hole 2113 close to the axis side; or a tensioning piece can be inserted between the connecting piece 300 and the inner surface 113 of the annular part so that the middle part of the connecting piece 300 contacts the surface of the second connecting hole 2113 close to the axis side.

[0102] As another example, Figure 11 As shown, the first connecting portion 211 may include a second protrusion 2114, the second connecting portion 130 may be the inner surface 113 of the annular portion, and the connecting member 300 may be a clamp-like structure. The connecting member 300 is sandwiched between the second protrusion 2114 and the annular portion 110, and contacts the surface of the second protrusion 2114 away from the axis and the inner surface 113 of the annular portion, respectively. Here, the connecting member 300 can be pressed against the second protrusion 2114 by further deforming the end in contact with the inner surface 113 of the annular portion. Alternatively, a tensioning member can be inserted between the connecting member 300 and the inner surface 113 of the annular portion to press the connecting member 300 against the second protrusion 2114.

[0103] In some optional implementations of the embodiments of the present application, the annular portion 110 may have a first flange 114 and a second flange 115 at both ends of the axial direction; part of the core monomer 210 is inserted between the first flange 114 and the second flange 115, so as to limit the axial position of the core monomer 210 in the bracket 100 by the two flanges.

[0104] Of course, in other implementations, the annular portion 110 may not be provided with a flange. Here, the bracket 100 may limit the axial position of the core unit 210 in the bracket 100 by a marking line or other limiting structure.

[0105] In this implementation, when the annular portion 110 includes two annular monomers 116 , the first flange 114 is provided at one end of one annular monomer 116 away from the other annular monomer 116 ; the second flange 115 is provided at one end of the other annular monomer 116 away from the one annular monomer 116 .

[0106] The embodiment of the present application also describes a motor, which includes a stator device and a rotor according to the embodiment of the present application. The rotor is arranged outside the stator device. By making the distance between the outer surface 215 of at least three core monomers and the axis the same, the outer diameter error of the core 200 formed by the at least three core monomers 210 can be greatly reduced, so that the gap between the stator device and the rotor can be made more uniform in the circumferential direction, thereby improving the smoothness of the rotor rotation and reducing the vibration and noise generated during the operation of the motor.

[0107] The various specific technical features described in the specific embodiments may be combined in any suitable manner, unless they are inconsistent. For example, different embodiments and technical solutions may be formed by combining different specific technical features. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0108] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A stator device, characterized in that: include: a stent having an annular portion; An iron core comprising at least three iron core units; At least three core units are radially arranged along the circumference of the annular portion; A wire groove is provided between two adjacent core monomers; the core monomers have an inner surface facing the axis side; The connector makes the inner surface of the core unit and the outer surface of the annular portion fit together.

2. The stator device according to claim 1, characterized in that The core unit has a first connection portion; the bracket has a second connection portion corresponding to the position of the first connection portion; the connecting member is arranged between the first connection portion and the second connection portion, and the connecting member is used to provide a radial force toward the axis side to the first connection portion.

3. The stator device according to claim 2, characterized in that The first connecting portion is located on the inner side of the annular portion; the second connecting portion is arranged on the side of the first connecting portion away from the axis, and the connecting member is arranged between the first connecting portion and the second connecting portion; the connecting member is in contact with the first connecting portion, and the connecting member is used to provide a radial force toward the axis side to the first connecting portion.

4. The stator device according to claim 3, characterized in that The second connecting portion includes the inner surface of the annular portion; or, The second connecting portion includes a first boss provided on the end surface of the annular portion; or The second connecting portion includes a second boss disposed on the fixing portion of the bracket.

5. The stator device according to claim 3, characterized in that The first connecting portion includes a first protrusion, and the connecting member is inserted between the first protrusion and the second connecting portion; or The first connecting portion includes a first connecting hole; the first part of the connecting member is inserted into the first connecting hole and contacts the surface of the first connecting hole close to the axis; the second part of the connecting member is located between the first connecting hole and the second connecting portion.

6. The stator device according to claim 3, characterized in that The annular portion is provided with at least three openings along the circumferential direction, and the first connecting portion passes through the openings and is located inside the annular portion.

7. The stator device according to claim 3, characterized in that The length of the portion of the connecting member located between the first connecting portion and the second connecting portion can be adjusted based on an external force so that the connecting member contacts the first connecting portion and the second connecting portion respectively; or The stator device further includes a tensioning member, at least a portion of which is inserted between the second connecting portion and the connecting member, so that the tensioning member contacts the second connecting portion and the connecting member respectively.

8. The stator device according to claim 2, characterized in that The first connecting portion is located on the outside of the annular portion; the second connecting portion is arranged on the side of the first connecting portion close to the axis, and the connecting member is arranged between the first connecting portion and the second connecting portion; the connecting member is in contact with the first connecting portion and is used to provide a radial force toward the axis side to the first connecting portion.

9. The stator device according to claim 8, characterized in that The first connecting portion includes a second protruding portion, and the connecting member is sandwiched between the second protruding portion and the second connecting portion; or The first connecting portion includes a second connecting hole; the connecting piece is inserted into the second connecting hole; and the connecting piece is clamped between the wall of the second connecting hole on the side close to the axis and the outside of the second connecting portion.

10. The stator device according to claim 2, characterized in that The core unit has at least two first connection parts that are spaced apart in the axial direction, and the connection piece is arranged between the at least two first connection parts and the second connection part.

11. The stator device according to claim 2, characterized in that The annular portion has two adjacent annular monomers in the axial direction; the core monomer has two first connecting portions spaced apart at both ends of the axial direction, and the two first connecting portions correspond to the positions of the two annular monomers; The bracket has two second connecting parts corresponding to the positions of the two first connecting parts respectively; The connecting member is arranged between the two first connecting parts and the two second connecting parts.

12. The stator device according to any one of claims 1 to 11, characterized in that: The outer surface of the annular portion is the outermost surface of the annular portion in the circumferential direction; The outer surface of the annular portion is formed by an axial extension of a circle, and the inner surface of the core unit is an arc surface; or, the inner surface of the core unit is a plane, and the area where the outer surface of the annular portion contacts the inner surface of the core unit is a plane.

13. The stator device according to any one of claims 1 to 11, characterized in that: The annular portion has a first flange and a second flange at both ends in the axial direction; a portion of the core unit is inserted between the first flange and the second flange.

14. The stator device according to any one of claims 1 to 11, characterized in that: The outer surface of the core unit is an arc surface, and the bracket further comprises a fixing portion located in the space defined by the annular portion, and the fixing portion has a third connecting hole in the axial direction; The stator device further comprises: A conductive wire, at least partially wound around the tooth slots of the core unit; The shaft body is partially locked in the third connecting hole.

15. A motor, characterized in that: It comprises the stator device and the rotor according to any one of claims 1 to 14, wherein the rotor is sleeved outside the stator device.

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