An electric machine

Abstract

A kind of motor, it is related to the technical field of motor;Motor includes: shell, including installation cavity, the side of the shell is equipped with outlet hole;Component, is arranged in the installation cavity;At least one connection wire harness, between the component and the outlet hole, the connection wire harness includes wire harness body, and first connecting portion, second connecting portion are connected to the both ends of wire harness body respectively, the first connecting portion is electrically connected with the component, the second connecting portion is fixedly connected to the outlet hole, the second connecting portion is used to be electrically connected with motor controller, the wire harness body has the elastic telescopic structure of making the wire harness body elongation or shortening.Connection wire harness can be elongated with pulling and automatically shortened with loosening during assembly, provide convenience for assembly, connection wire harness is not easy to contact with encoder circuit board or other components in motor, it is advantageous to improve the qualified rate of product and the stability of motor work.

Description

Technical Field

[0001] This application relates to the technical field of electric motors, specifically to an electric motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy, widely used in various mechanical equipment, automation systems, and household appliances. During motor operation, to ensure performance and stability, an encoder is typically installed inside the motor. The encoder monitors the motor shaft position in real time, allowing for adjustments to the control strategy and ensuring optimal motor operation. The encoder transmits its signals via a wiring harness. During assembly, the encoder is fixed inside the motor housing, and one end of the wiring harness is connected to the encoder, while the other end is led out through a cable exit hole on the housing. To facilitate this connection, a relatively long wiring harness is often used. However, after installation, this long harness left inside the housing can easily come into contact with the encoder circuit board, causing short circuits or component detachment due to compression, leading to encoder failure and reducing product yield and motor stability. Understandably, this same problem exists in the assembly of other motor wiring harnesses, such as power harnesses. Utility Model Content

[0003] This application provides a motor in which the wiring harness can automatically shorten after assembly, which helps to prevent it from contacting other components inside the motor, thereby improving the product qualification rate and the stability of motor operation.

[0004] According to one aspect of this application, one embodiment provides a motor, comprising:

[0005] The housing includes a mounting cavity, and a cable outlet is provided on one side of the housing;

[0006] The components are disposed within the mounting cavity;

[0007] At least one connecting wire harness is connected between the component and the outlet hole. The connecting wire harness includes a wire harness body and a first connecting portion and a second connecting portion respectively connected to both ends of the wire harness body. The first connecting portion is electrically connected to the component, and the second connecting portion is fixedly connected to the outlet hole. The second connecting portion is used for electrical connection with the motor controller. The wire harness body has an elastic telescopic structure that allows the wire harness body to extend or shorten.

[0008] In one embodiment, the device further includes an encoder. The housing includes an encoder cover, the top of which has a first wire outlet. The component includes a first component disposed on the encoder. The at least one connecting harness includes a first connecting harness. A first connecting portion of the first connecting harness is electrically connected to the first component. A second connecting portion of the first connecting harness is fixedly connected to the first wire outlet. The second connecting portion of the first connecting harness is used for electrical connection to the encoder end of the motor controller.

[0009] In one embodiment, the inner wall of the encoder cover is provided with a tubular receiving portion, the receiving portion having a receiving cavity, and the wire harness body passes through the receiving portion so that the wire harness body retracts into the receiving cavity in a deformation recovery state.

[0010] In one embodiment, the housing includes a main body, the top of which is provided with a second wire outlet hole. The components include a stator winding. The at least one connecting wire harness includes a second connecting wire harness. The first connecting portion of the second connecting wire harness is electrically connected to the lead wire of the stator winding. The second connecting portion of the second connecting wire harness is fixedly connected to the second wire outlet hole. The second connecting portion of the second connecting wire harness is used to electrically connect to the power line output terminal of the motor controller.

[0011] In one embodiment, the elastic telescopic structure is a telescopic spiral structure or a wavy structure.

[0012] In one embodiment, the wire harness body includes an elastic protective sleeve and a conductor disposed within the elastic protective sleeve. The elastic protective sleeve is used to elongate the length of the wire harness body in a state of increased deformation and to shorten the length of the wire harness body in a state of recovery from deformation. The length of the conductor is greater than or equal to the limit length of the elastic protective sleeve in the state of increased deformation.

[0013] In one embodiment, the elastic protective sleeve is a retractable corrugated tube.

[0014] In one embodiment, the second connecting part includes an outer section and an inner guide section. A connecting flange is provided between the outer section and the inner guide section. The inner guide section is inserted into the wire outlet hole. The connecting flange abuts against the outside of the housing and is connected and fixed to the housing. The outer section has a plug cavity, and a pin is provided in the plug cavity. The wire harness body passes through the inner cavity of the inner guide section and is electrically connected to the pin. The second connecting part is used to electrically connect to a cable connector that is electrically connected to a motor controller at one end through the pin.

[0015] In one embodiment, the outer periphery of the outer segment is provided with a limiting groove, the limiting groove being L-shaped. One straight arm of the L-shaped limiting groove is used for the insertion of the protrusion of the cable connector, and the other straight arm is used to limit the inserted protrusion after the cable connector rotates circumferentially along the outer segment, so as to fix the second connecting part to the cable connector.

[0016] In one embodiment, a guide slope is provided on one side of the straight arm into which the protrusion is inserted in the limiting groove, for guiding the protrusion into the limiting groove.

[0017] The motor according to the above embodiment includes a housing, components, and a connecting harness. The connecting harness includes a harness body and a first connecting portion and a second connecting portion respectively connected to both ends of the harness body. The harness body has an elastic telescopic structure that allows it to extend or shorten. During assembly, the second connecting portion is fixedly connected to the outlet hole, and then the connecting harness is pulled to electrically connect the first connecting portion to the components. During assembly, the connecting harness can extend with pulling and automatically shorten with releasing, which facilitates assembly. After assembly, the final length of the connecting harness can automatically match the connection distance, which helps to avoid excess length and makes it less likely for the connecting harness to contact the encoder circuit board or other components inside the motor, thereby improving the product qualification rate and the stability of motor operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a connecting wire harness according to one embodiment;

[0019] Figure 2 This is a schematic diagram of a wavy line structure as an embodiment of the elastic telescopic structure.

[0020] Figure 3 A schematic diagram of a wire harness body including an elastic protective sleeve according to one embodiment;

[0021] Figure 4 This is a schematic diagram of an encoder cover with a storage section in one embodiment.

[0022] Figure 5 This is a schematic diagram of a structure in which a first connecting harness is connected between a first component and a first outlet hole, according to one embodiment.

[0023] Figure 6 This is a schematic diagram of the structure of the second connecting part according to one embodiment;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Connecting harness, 101-Harness body, 102-First connecting part, 103-Second connecting part, 104-Elastic telescopic structure, 105-Elastic protective sleeve, 106-Wire, 107-Limiting groove, 108-Guide slope, 109-Plug-in cavity, 110-Inner guide section, 111-Connecting flange, 112-Outer section;

[0026] 2-Housing, 201-Storage section, 202-End cover, 203-Encoder cover, 204-Main body;

[0027] 3-Components. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0029] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] Inside the motor, the connecting harness connects between the encoder and the output hole. To facilitate the connection between the harness and the encoder, a relatively long harness is required. However, after installation, the long harness left inside the housing can easily come into contact with the encoder circuit board, causing a short circuit or causing components to detach due to compression, leading to encoder failure, reducing product yield, and decreasing the stability of motor operation. Understandably, this problem also exists in the assembly process of other motor harnesses, such as the power harness.

[0032] The connecting harness of this application includes a harness body, which has an elastic telescopic structure that allows the harness body to extend or shorten. During assembly, the connecting harness can extend with pulling and automatically shorten with releasing, facilitating assembly. Furthermore, the final length of the connecting harness after assembly automatically matches the connection distance, helping to avoid excess length and preventing the connecting harness from contacting the encoder circuit board or other components within the motor. This improves product yield and motor operational stability.

[0033] The following describes some embodiments of the motor provided in this application with reference to the accompanying drawings.

[0034] Please see Figures 1 to 6 This application provides an embodiment of an electric motor, including a housing 2, components 3, a connecting harness 1, and other functional components as needed, which are described in detail below.

[0035] In this embodiment, the housing 2 includes a mounting cavity, and a wire outlet hole is provided on one side of the housing 2; the component 3 is disposed in the mounting cavity; the connecting wire harness 1 is connected between the component 3 and the wire outlet hole. The connecting wire harness 1 includes a wire harness body 101, and a first connecting part 102 and a second connecting part 103 respectively connected to both ends of the wire harness body 101. The first connecting part 102 is electrically connected to the component 3, and the second connecting part 103 is fixedly connected to the wire outlet hole. The second connecting part 103 is used to electrically connect to the motor controller. The wire harness body 101 has an elastic telescopic structure 104 that allows the wire harness body 101 to extend or shorten.

[0036] It is understood that in this embodiment, the housing 2 may include a main body 204, an end cover 202, and an encoder cover 203 connected in sequence. Component 3 may be an encoder in the motor, a component on the stator, or other components in the motor that require wiring. When component 3 is a component on the encoder, the mounting cavity may be a mounting cavity formed by the end cover 202 and the encoder cover 203. When component 3 is a component on the stator, the mounting cavity may be a mounting cavity formed by the main body 204 and the end cover 202. In this embodiment, the wire outlet hole may be located on the main body 204 or on the encoder cover 203. For example, when component 3 is a component on the encoder, the wire outlet hole may be located on the encoder cover 203, but it may also be located on the main body 204. One or more cable outlets can be provided. With one cable outlet, the encoder and stator can each be connected to a connecting harness 1, and both connecting harnesses 1 can be connected to the same cable outlet. With multiple cable outlets, the encoder and stator each are connected to a connecting harness 1, and the two connecting harnesses 1 are connected to different cable outlets. This embodiment does not specifically limit the specific structure of the first connecting part 102 or the specific electrical connection method between it and the component 3. The structure of the first connecting part 102 can be set according to different electrical connection methods, such as plug-in connection, crimping with studs, or welding, etc. In this embodiment, the second connecting part 103 is used for electrical connection with the motor controller, thereby receiving control signals or feedback detection signals through the connecting harness 1. The length of the elastic telescopic structure 104 in this embodiment can be stretched, and its length can automatically shorten when the force decreases. The length of the elastic telescopic structure 104 can be the same as the length of the harness body 101, or it can be a partial segment of the harness body 101 with the elastic telescopic structure 104.

[0037] The motor in this embodiment includes a housing 2, components 3, and a connecting harness 1. The connecting harness 1 includes a harness body 101 and a first connecting portion 102 and a second connecting portion 103 respectively connected to both ends of the harness body 101. The harness body 101 has an elastic telescopic structure 104 that allows the harness body 101 to extend or shorten. During assembly, the second connecting portion 103 is fixedly connected to the wire outlet hole, and then the connecting harness 1 is pulled to electrically connect the first connecting portion 102 to the component 3. During the assembly process, the connecting harness 1 can extend with pulling and automatically shorten with releasing, which facilitates assembly. After assembly, the final length of the connecting harness 1 can also automatically match the connection distance, which helps to avoid excess length and makes it less likely for the connecting harness 1 to come into contact with the encoder circuit board or other components in the motor, which helps to improve the product qualification rate and the stability of the motor operation.

[0038] In one embodiment, such as Figure 5As shown, the motor also includes an encoder. The housing 2 includes an encoder cover 203, the top of which has a first wire outlet hole. The component 3 includes a first component mounted on the encoder. The connecting harness 1 includes a first connecting harness. The first connecting portion 102 of the first connecting harness is electrically connected to the first component. The second connecting portion 103 of the first connecting harness is fixedly connected to the first wire outlet hole and is used for electrical connection to the encoder end of the motor controller. In this embodiment, the first connecting harness included in the connecting harness 1 is the encoder wire. The first component can be a component mounted on the encoder circuit board. The component on the circuit board is electrically connected to the first connecting portion 102 through a socket on the circuit board. During assembly, the first connecting wire harness can be installed into the cavity of the encoder cover 203 through the wire outlet hole. Then, the second connecting part 103 of the first connecting wire harness is fixed to the first wire outlet hole. Afterward, the first connecting wire harness is pulled, extending its length so that the first connecting part 102 of the first connecting wire harness can be inserted into the socket on the encoder circuit board. Finally, the encoder cover 203 is fixed to the rear end of the end cover 202. As the encoder cover 203 moves closer to the end cover 202, the length of the first connecting wire harness automatically shortens. After the encoder cover 203 is fixed, the final length of the first connecting wire harness automatically matches the connection distance, which is the distance between the first wire outlet hole and the socket on the encoder circuit board. This helps avoid excess length, making it less likely for the connecting wire harness 1 to contact the encoder circuit board or other components inside the motor, thus improving the product qualification rate and the stability of motor operation. It also eliminates the need for manual handling and tightening of the wire harness, simplifying the assembly process and improving production efficiency.

[0039] In one embodiment, such as Figure 4As shown, the inner wall of the encoder cover 203 is provided with a tubular receiving portion 201. The receiving portion 201 has a receiving cavity, through which the wire harness body 101 passes, so that the wire harness body 101 retracts into the receiving cavity in the deformation recovery state. After assembly, the wire harness body 101 is stored in the receiving portion 201, making it less likely for the connecting wire harness 1 to come into contact with other components in the motor, which is beneficial to improving the product qualification rate and the stability of motor operation. In some embodiments, the tubular receiving portion 201 can be bent at a certain angle. For example, the axis of the wire outlet is perpendicular to the axis of the motor shaft. When the connecting wire harness 1 is inserted into the cavity through the wire outlet, it needs to be bent to a certain extent. The bent tubular receiving portion 201 can form a certain guide, which is beneficial to the electrical connection between the connecting wire harness 1 and the component 3. The receiving portion 201 can be an integral structure with the encoder cover 203. In some embodiments, the receiving portion 201 can also be fixed to the inner wall of the encoder cover 203 by assembly. In some applications, the storage section 201 can be any shape other than a tube. In some applications, if it can be ensured that the connecting harness 1 will not come into contact with other components inside the motor, the storage section 201 may not be required.

[0040] In one embodiment, the housing 2 includes a main body 204, the top of which has a second wire outlet hole. The component 3 includes a stator winding. At least one connecting wire harness 1 includes a second connecting wire harness. The first connecting portion 102 of the second connecting wire harness is electrically connected to the lead wire of the stator winding. The second connecting portion 103 of the second connecting wire harness is fixedly connected to the second wire outlet hole and is used to electrically connect to the power output terminal of the motor controller. In this embodiment, the second connecting wire harness included in the connecting wire harness 1 is the power line, and the second component can be a pin or terminal block at the end of the stator winding. During assembly, the second connecting wire harness can be installed into the cavity of the main body 204 through the second outlet hole. Then, the second connecting part 103 of the second connecting wire harness is fixed to the second outlet hole. Afterward, pulling the second connecting wire harness elongates its length, allowing the first connecting part 102 of the second connecting wire harness to electrically connect with the pin or terminal at the end of the stator winding. After connection, the final length of the second connecting wire harness automatically matches the connection distance, which is the distance between the second outlet hole and the pin or terminal at the end of the stator winding. This helps avoid excess length, making it less likely for the connecting wire harness 1 to contact the encoder circuit board or other components inside the motor, thus improving the product yield and the stability of motor operation. Furthermore, it eliminates the need for manual handling and tightening of the wire harness, simplifying the assembly process and improving production efficiency.

[0041] In one embodiment, the elastic telescopic structure 104 is a telescopic spiral structure or a wavy structure. A spiral structure, such as... Figure 1 As shown, the wavy line structure is as follows Figure 2As shown, the spiral and wavy structures are simple, which helps reduce manufacturing costs. The axially extending spiral and wavy structures have good elasticity, which is beneficial for the elongation and shortening of the wire harness body 101. In some embodiments, the entire wire harness body 101 may be spiral or wavy; in other embodiments, only a portion of the wire harness body 101 may be spiral or wavy.

[0042] In one embodiment, such as Figure 3 As shown, the wire harness body 101 includes an elastic protective sleeve 105 and a wire 106 disposed within the elastic protective sleeve 105. The elastic protective sleeve 105 is used to elongate the length of the wire harness body 101 in the state of increased deformation and to shorten the length of the wire harness body 101 in the state of recovery from deformation. The length of the wire 106 is greater than or equal to the limit length of the elastic protective sleeve 105 in the state of increased deformation. In this embodiment, the elastic protective sleeve 105 and the wire 106 can form a wire harness body 101 with an elastic telescopic structure 104. It is understood that in the state of intensified deformation (i.e., the deformation of the connecting wire harness 1 gradually increases), and in the state of deformation recovery (i.e., the deformation gradually decreases), the limit length of the elastic protective sleeve 105 in the state of intensified deformation is the maximum length that the elastic protective sleeve 105 can reach after elongation. The length of the wire 106 is the length of the axis of the wire 106. The length of the wire 106 is greater than or equal to the limit length of the elastic protective sleeve 105 in the state of intensified deformation, which helps to avoid the length of the wire 106 restricting the elongation of the elastic protective sleeve 105, resulting in better elongation deformation of the elastic telescopic structure 104. In this embodiment, both ends of the elastic protective sleeve 105 are fixedly connected to the first connecting part 102 and the second connecting part 103, respectively, and both ends of the wire 106 are electrically connected to the conductors in the first connecting part 102 and the second connecting part 103, respectively. The elastic protective sleeve 105 not only realizes the telescopic movement of the connecting wire harness 1 but also provides protection for the wire 106.

[0043] In one embodiment, the elastic protective sleeve 105 is a stretchable corrugated tube, which allows for good deformation, thus facilitating good deformation of the elastic protective sleeve 105. In some embodiments, the elastic protective sleeve 105 can also be made directly from an elastic material, such as rubber. This embodiment does not impose specific limitations on the shape of the wire 106 inside the elastic protective sleeve 105; for example, the wire 106 can be arranged in any shape inside the elastic protective sleeve 105. In one embodiment, the wire 106 inside the elastic protective sleeve 105 can also be the wire harness body 101 of the above embodiment, which can be arranged in a spiral and then wavy shape inside the elastic protective sleeve 105.

[0044] In one embodiment, such as Figure 6As shown, the second connecting part 103 includes an outer section 112 and an inner guide section 110. A connecting flange 111 is provided between the outer section 112 and the inner guide section 110. The inner guide section 110 is inserted into the wire outlet hole. The connecting flange 111 abuts against the outside of the housing 2 and is connected and fixed to the housing 2. The outer section 112 is provided with a plug cavity 109. A pin is provided in the plug cavity 109. The wire harness body 101 passes through the inner cavity of the inner guide section 110 and is electrically connected to the pin. The second connecting part 103 is used to electrically connect to a cable connector that is electrically connected to a motor controller at one end through the pin. During assembly, the second connecting part 103 is assembled into the cable outlet hole, the inner guide section 110 is inserted into the cable outlet hole, and the connecting flange 111 abuts against the outside of the housing 2 and is connected and fixed to the housing 2. The inner guide section 110 has a protective function, which helps to avoid direct contact between the wire harness body 101 and the wall of the cable outlet hole. The connecting flange 111 facilitates the connection between the second connecting part 103 and the housing 2. In some embodiments, the connecting flange 111 may be provided with mounting holes, and screws are passed through the mounting holes to connect and fix it to the housing 2. The outer connecting section 112 is connected to the cable connector. During connection, the cable connector is inserted into the insertion cavity 109 of the outer connecting section 112, and the pin in the insertion cavity 109 is connected to the conductor in the cable connector, thereby realizing the connection between the motor and the motor controller. In some application scenarios, the second connecting part 103 may also have other structures. For example, the second connecting part 103 may only have a base, on which a pin electrically connected to the cable connector is fixed.

[0045] In one embodiment, the outer periphery of the outer segment 112 is provided with a limiting groove 107. The limiting groove 107 is L-shaped. One straight arm of the L-shaped limiting groove 107 is used for the insertion of the protrusion of the cable connector, and the other straight arm is used to limit the inserted protrusion after the cable connector rotates around the outer segment 112, so as to fix the second connecting part 103 to the cable connector. The L-shaped limiting groove 107 has a simple structure and the connection with the cable connector is also simple. When connecting, the protrusion provided on the inner wall of the inner hole of the cable connector is inserted into the limiting groove 107. After reaching the bottom of the limiting groove 107, rotating the cable connector will limit the protrusion on the cable connector in the limiting groove 107, thereby forming the connection between the second connecting part 103 and the cable connector.

[0046] In one embodiment, a guide slope 108 is provided on one side of the straight arm into which the protrusion is inserted in the limiting groove 107, for guiding the protrusion into the limiting groove 107. The guide slope 108 increases the width of the opening of the limiting groove 107 corresponding to the end of the outer segment 112, thereby allowing the protrusion on the cable connector to be smoothly inserted into the limiting groove 107, improving installation efficiency. In some embodiments, the guide slope 108 can also be replaced by a guiding arc-shaped surface. In some applications, the outer segment 112 can also be connected and fixed to the cable connector in other ways, such as by snap-fit.

[0047] The motor provided in the above embodiment includes a housing 2, components 3, and a connecting harness 1. The connecting harness 1 includes a harness body 101 and a first connecting portion 102 and a second connecting portion 103 respectively connected to both ends of the harness body 101. The harness body 101 has an elastic telescopic structure 104 that allows the harness body 101 to extend or shorten. During assembly, the second connecting portion 103 is fixedly connected to the outlet hole, and then the connecting harness 1 is pulled to electrically connect the first connecting portion 102 to the component 3. During the assembly process, the connecting harness 1 can extend with pulling and automatically shorten with releasing, which facilitates assembly. After assembly, the final length of the connecting harness 1 can also automatically match the connection distance, which helps to avoid excess length and makes it less likely for the connecting harness 1 to contact the encoder circuit board or other components in the motor, which helps to improve the product qualification rate and the stability of the motor operation.

[0048] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An electric motor, characterized in that, include: The housing includes a mounting cavity, and a cable outlet is provided on one side of the housing; The components are disposed within the mounting cavity; At least one connecting wire harness is connected between the component and the outlet hole. The connecting wire harness includes a wire harness body and a first connecting portion and a second connecting portion respectively connected to both ends of the wire harness body. The first connecting portion is electrically connected to the component, and the second connecting portion is fixedly connected to the outlet hole. The second connecting portion is used for electrical connection with the motor controller. The wire harness body has an elastic telescopic structure that allows the wire harness body to extend or shorten.

2. The motor as described in claim 1, characterized in that, It also includes an encoder, the housing includes an encoder cover, the top of the encoder cover is provided with a first wire outlet hole, the component includes a first component disposed on the encoder, the at least one connecting wire harness includes a first connecting wire harness, the first connecting part of the first connecting wire harness is electrically connected to the first component, the second connecting part of the first connecting wire harness is fixedly connected to the first wire outlet hole, and the second connecting part of the first connecting wire harness is used to electrically connect to the encoder end of the motor controller.

3. The motor as described in claim 2, characterized in that, The inner wall of the encoder cover is provided with a tubular storage part, which has a storage cavity. The wire harness body passes through the storage part so that the wire harness body retracts into the storage cavity in the deformation recovery state.

4. The motor as described in claim 1, characterized in that, The housing includes a main body, the top of which is provided with a second wire outlet. The components include a stator winding. The at least one connecting wire harness includes a second connecting wire harness. The first connecting part of the second connecting wire harness is electrically connected to the lead wire of the stator winding. The second connecting part of the second connecting wire harness is fixedly connected to the second wire outlet. The second connecting part of the second connecting wire harness is used to electrically connect to the power line output terminal of the motor controller.

5. The motor as described in any one of claims 1-4, characterized in that, The elastic telescopic structure is a telescopic spiral structure or a wavy structure.

6. The motor as described in any one of claims 1-4, characterized in that, The wire harness body includes an elastic protective sleeve and a wire disposed within the elastic protective sleeve. The elastic protective sleeve is used to elongate the length of the wire harness body under a state of increased deformation and to shorten the length of the wire harness body under a state of recovery from deformation. The length of the wire is greater than or equal to the limit length of the elastic protective sleeve under the state of increased deformation.

7. The motor as described in claim 6, characterized in that, The elastic protective sleeve is a retractable corrugated tube.

8. The motor as described in any one of claims 1-4, characterized in that, The second connecting part includes an outer section and an inner guide section. A connecting flange is provided between the outer section and the inner guide section. The inner guide section is inserted into the wire outlet hole. The connecting flange abuts against the outside of the housing and is connected and fixed to the housing. The outer section has a plug cavity, and a pin is provided in the plug cavity. The wire harness body passes through the inner cavity of the inner guide section and is electrically connected to the pin. The second connecting part is used to electrically connect to a cable connector that is electrically connected to a motor controller at one end through the pin.

9. The motor as described in claim 8, characterized in that, The outer periphery of the outer section is provided with a limiting groove. The limiting groove is L-shaped. One straight arm of the L-shaped limiting groove is used for the insertion of the protrusion of the cable connector, and the other straight arm is used to limit the inserted protrusion after the cable connector rotates around the outer section, so as to fix the second connecting part to the cable connector.

10. The motor as described in claim 9, characterized in that, The limiting groove has a guide slope on one side of the straight arm into which the protrusion is inserted, for guiding the protrusion into the limiting groove.

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