Wiring device, stator and motor
By setting up anti-slip structures, such as threads or mesh marks on the wiring pins of the motor wiring device, the problem of easy slipping of the enameled wire is solved, and the stable connection and high-reliability operation of the motor are achieved.
Patent Information
- Application Number
- CN202420056244.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The wiring method of existing motors causes the enameled wire to slip off easily and the friction is low, causing abnormal power on the motor.
Design a wiring device to prevent slipping by providing anti-slip structures such as threads or mesh marks on the wiring needles to increase the friction between the wiring needles and the enameled wires.
It effectively increases the friction between the terminal and the enameled wire, prevents slipping, and ensures the normal operation and reliability of the motor.
Smart Images
Figure CN222484416U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, and in particular to a wiring device, a stator and a motor. Background Art
[0002] A motor is a device that converts electrical energy into mechanical energy and is widely used in various mechanical equipment. As a type of motor, a DC motor can convert DC electrical energy into mechanical energy. It has the advantages of relatively large torque, good starting and speed regulation performance, and convenient control. A DC motor consists of a stator and a rotor. The stationary part of a DC motor is called a stator, and its main function is to generate a magnetic field. The rotating part of a DC motor is called a rotor, and its main function is to generate electromagnetic torque and induced electromotive force, and it is the hub of energy conversion for DC motors.
[0003] The stator consists of three parts: the stator core, the stator winding and the base. In order to energize the stator winding, a lead wire is usually drawn out from the stator winding to connect to an external power source. In the prior art, a pin base is usually installed on the stator. After one end of the wire pin is inserted into the pin hole of the pin base, the enameled wire is wrapped around the end of the wire pin exposed in the pin hole, thereby achieving electrical connection between the stator and the external power source. However, the cross-section of the existing wire pins is mostly a diamond-shaped structure, which results in a small contact area and low friction between the enameled wire and the wire pin, and the enameled wire is prone to slipping; and the wire pin is also prone to damage the enameled wire, causing abnormal power-on of the motor.
[0004] Therefore, it is necessary to improve the existing wiring method of the motor to overcome the defects of the prior art. Utility Model Content
[0005] In order to overcome the problems existing in the related art, one of the purposes of the utility model is to provide a wiring device, which can increase the friction between the wiring needle and the enameled wire to prevent the enameled wire from slipping, thereby ensuring the normal operation of the motor using the wiring device.
[0006] A wiring device, comprising:
[0007] A pin base, wherein the pin base is provided with a plurality of pin holes;
[0008] The wiring needle comprises a needle head and a needle body which are connected to each other, the needle head is inserted into the pin insertion hole, the needle body is exposed outside the pin insertion hole, and the outer wall of the needle body is provided with a first anti-slip structure.
[0009] The wiring device improves the wiring pin and provides an anti-skid structure on the wiring pin to increase the friction between the wiring pin and the enameled wire, thereby preventing the enameled wire from slipping and falling during use of the motor, thereby ensuring the reliability of the motor.
[0010] In a preferred technical solution of the present utility model, the cross section of the needle head and / or the needle body is circular or elliptical.
[0011] The needle head with a circular or oval cross section can increase the contact area with the pin hole, so that the connection with the pin hole is more stable. The needle body with a circular or oval cross section can prevent the wiring needle from scratching the enameled wire and causing the motor to malfunction.
[0012] In a preferred technical solution of the utility model, the first anti-slip structure is a thread, the thread is arranged along the length direction of the needle body, and the thread is any one of a rectangular thread, a triangular thread, a trapezoidal thread or a serrated thread.
[0013] The threads can increase the friction between the enameled wire and the terminal pin, so that the enameled wire is firmly wound around the enameled wire.
[0014] In a preferred technical solution of the present utility model, the bottom diameter of the thread is 2mm-4mm, the outer diameter of the thread is 4mm-8mm, and the pitch of the thread is 0.5mm-2mm.
[0015] In a preferred technical solution of the present utility model, the first anti-slip structure is a mesh pattern, and the mesh pattern is recessed inward from the surface of the needle body, and the recessed depth of the mesh pattern is 0.5mm-1mm.
[0016] The mesh pattern can also increase the friction between the enameled wire and the terminal pin, making it difficult for the enameled wire to slip off the terminal pin body.
[0017] In a preferred technical solution of the utility model, a second anti-slip structure is provided on the needle head, and the second anti-slip structure is a thread.
[0018] In a preferred technical solution of the utility model, a second anti-slip structure is provided on the needle tip, and the second anti-slip structure is a plurality of annular protrusions, and the plurality of annular protrusions are arranged on the needle tip along the axial direction of the needle tip; and the height of the annular protrusions gradually decreases from one end away from the needle body to one end close to the needle body, and the distance between two adjacent annular protrusions is 0.5mm-1.5mm.
[0019] The second anti-slip structure can improve the reliability of contact between the connection pin and the pin hole.
[0020] In a preferred technical solution of the utility model, a stop cap is provided at the end of the needle body, the stop cap is threadedly connected to the needle body, the stop cap protrudes outward from the outer wall of the needle body, and the protruding height of the stop cap is 0.1mm-0.5mm.
[0021] The retaining cap can effectively prevent the enameled wire from slipping and ensure stable operation of the motor.
[0022] The second object of the utility model is to provide a stator, comprising a stator core and the wiring device as described above, wherein the pin base is mounted on the stator core.
[0023] The third object of the present utility model is to provide a motor, characterized in that it comprises a rotor and the stator as described above, wherein the rotor is arranged at the center of the stator, and the axis of the rotor coincides with the axis of the stator.
[0024] The beneficial effects of the utility model are:
[0025] The utility model provides a wiring device, which includes a pin base and a wiring pin, wherein the pin base is provided with a plurality of pin holes; the wiring pin includes a needle head and a needle body connected to each other, wherein the needle head is inserted into the pin hole, the needle body is exposed outside the pin hole, and the outer wall of the needle body is provided with a first anti-slip structure. The wiring device improves the wiring pin and provides an anti-slip structure on the wiring pin to increase the friction between the wiring pin and the enameled wire, thereby preventing the enameled wire from slipping and falling during the use of the motor, thereby ensuring that the height of the wiring pin and the insulating sleeve of the subsequent process are maintained at the same level, thereby ensuring the reliability of the motor.
[0026] The present application also provides a stator and a motor including the above wiring device. The stator can achieve stable connection of the power line through the above wiring device, thereby ensuring stable operation of the motor and excellent reliability.
[0027] The wiring device can increase the friction between the wiring needle and the enameled wire to prevent the enameled wire from slipping, thereby ensuring the normal operation of the motor using the wiring device and reducing the risk of motor damage caused by the enameled wire falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of an existing wiring pin provided by the utility model being arranged on a pin base;
[0029] Figure 2 It is a structural schematic diagram of the wiring device of the present application provided by the utility model;
[0030] Figure 3 It is a schematic structural diagram of a wiring needle provided by the utility model with threads on the needle body;
[0031] Figure 4 It is a schematic diagram of the structure of the connection needle provided by the utility model with threads on the needle body when the enameled wire is not included;
[0032] Figure 5 It is a schematic structural diagram of a wiring needle provided by the utility model, in which a mesh pattern is provided on the needle body;
[0033] Figure 6It is a schematic diagram of the structure of a wiring needle provided by the utility model, in which both the needle body and the needle head are provided with threads;
[0034] Figure 7 It is a structural schematic diagram of a wiring needle provided by the utility model, in which the needle head is provided with an annular protrusion;
[0035] Figure 8 The utility model is a schematic structural diagram of a retaining cap provided on a wiring pin.
[0036] Reference numerals:
[0037] 1. Pin base; 11. Pin hole; 2. Terminal pin; 21. Needle body; 22. Needle head; 3. Enameled wire; 4. Thread; 5. Reticulated pattern; 6. Annular protrusion; 7. Stop cap. DETAILED DESCRIPTION
[0038] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0039] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0040] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0041] A motor is a device that converts electrical energy into mechanical energy and is widely used in various mechanical equipment. As a type of motor, a DC motor can convert DC electrical energy into mechanical energy. It has the advantages of relatively large torque, good starting and speed regulation performance, and convenient control. A DC motor consists of a stator and a rotor. The stationary part of a DC motor is called a stator, and its main function is to generate a magnetic field. The rotating part of a DC motor is called a rotor, and its main function is to generate electromagnetic torque and induced electromotive force, and it is the hub of energy conversion for DC motors.
[0042] The stator consists of three parts: the stator core, the stator winding and the base. In order to energize the stator winding, a lead wire is usually drawn out from the stator winding to connect to an external power source. In the prior art, a pin base is usually installed on the stator. After one end of the wire pin is inserted into the pin hole of the pin base, the enameled wire is wrapped around the end of the wire pin exposed in the pin hole, thereby achieving electrical connection between the stator and the external power source. However, the cross-section of the existing wire pins is mostly a diamond-shaped structure, which results in a small contact area and low friction between the enameled wire and the wire pin, and the enameled wire is prone to slipping; and the wire pin is also prone to damage the enameled wire, causing abnormal power-on of the motor.
[0043] Based on this, the present application provides a wiring device.
[0044] Example 1
[0045] like Figure 1-Figure 8 As shown, this embodiment provides a wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0046] The wiring device improves the wiring pin 2 and provides an anti-skid structure on the wiring pin 2 to increase the friction between the wiring pin 2 and the enameled wire 3, thereby preventing the enameled wire 3 from slipping and falling during the use of the motor. This ensures that the height of the wiring pin 2 and the insulating sleeve of the subsequent process are maintained at the same level, thereby ensuring the reliability of the motor.
[0047] Specifically, a conductive sheet is also provided in the pin hole 11, and after the needle head 22 is inserted into the pin hole 11, it can be electrically connected to the conductive sheet. The conductive sheet is electrically connected to the stator of the motor, thereby realizing the electrical connection between the terminal pin 2 and the stator of the motor.
[0048] More specifically, the pin base 1 is also called stator overmolding, which is used to fix the terminal pins 2, the stator and the stator winding. The pin base 1 can be made of polyamide material, nylon material, PET material, polyetheretherketone, or any material with good insulation performance and high temperature resistance.
[0049] The terminal pin 2 can be an aluminum material terminal pin 2, a copper material terminal pin 2, an aluminum alloy material terminal pin 2, a copper alloy material terminal pin 2, or a terminal pin 2 made of any material with good electrical conductivity and high temperature resistance.
[0050] This application only requires changes to be made to the structure of the terminal pin 2, and there is no need to debug related equipment during the production process, which can ensure the stable operation of the motor and help reduce costs.
[0051] The connection pin 2 of the present application is firmly combined with the enameled wire 3, so that the height of the connection pin 2 and the insulating sleeve of the subsequent process are maintained at the same level after soldering.
[0052] Example 2
[0053] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0054] In this embodiment, the cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0055] The diamond-shaped connecting pin 2 used in the prior art has a small contact area with the pin hole 11, so that the connecting pin 2 is easy to slip off.
[0056] The needle head 22 with a circular or elliptical cross section can increase the contact area with the pin hole 11, thereby making the connection with the pin hole 11 more stable. The needle body 21 with a circular or elliptical cross section can prevent the wiring needle 2 from scratching the enameled wire 3 and causing motor failure.
[0057] Example 3
[0058] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0059] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0060] In this embodiment, the first anti-slip structure is a thread 4 , which is arranged along the length direction of the needle body 21 , and the thread 4 is any one of a rectangular thread 4 , a triangular thread 4 , a trapezoidal thread 4 or a sawtooth thread 4 .
[0061] The thread 4 can increase the friction between the enameled wire 3 and the terminal pin 2 , so that the enameled wire 3 is firmly wound around the enameled wire 3 .
[0062] More specifically, the bottom diameter of the thread 4 is 2 mm-4 mm, the outer diameter of the thread 4 is 4 mm-8 mm, and the pitch of the thread 4 is 0.5 mm-2 mm.
[0063] The thread 4 of this size can ensure the stable connection between the enameled wire 3 and the terminal pin 2 without damaging the structural stability of the terminal pin 2.
[0064] Example 4
[0065] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0066] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0067] In this embodiment, the first anti-slip structure is a mesh pattern 5 , and the mesh pattern 5 is sunken inward from the surface of the needle body 21 , and the sunken depth of the mesh pattern 5 is 0.5 mm-1 mm.
[0068] The mesh pattern 5 can also increase the friction between the enameled wire 3 and the terminal pin 2 , so that the enameled wire 3 is not easy to slip off the needle body 21 of the terminal pin 2 .
[0069] In this embodiment, in addition to the mesh pattern 5, the first anti-slip structure may also be a wave pattern, a checkered pattern, a twill pattern, a cross pattern, or any pattern that can increase the surface roughness.
[0070] Example 5
[0071] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0072] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0073] In this embodiment, the first anti-slip structure is a thread 4 , which is arranged along the length direction of the needle body 21 , and the thread 4 is any one of a rectangular thread 4 , a triangular thread 4 , a trapezoidal thread 4 or a sawtooth thread 4 .
[0074] The bottom diameter of the thread 4 is 2mm-4mm, the outer diameter of the thread 4 is 4mm-8mm, and the pitch of the thread 4 is 0.5mm-2mm.
[0075] In this embodiment, a second anti-slip structure is provided on the needle head 22 , and the second anti-slip structure is a thread 4 .
[0076] The thread 4 is provided on the needle head 22, which can increase the friction between the needle head 22 and the pin insertion hole 11, so that the needle head 22 can be firmly connected to the pin insertion hole 11, and the installation of the terminal pin 2 is stable.
[0077] Example 6
[0078] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0079] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0080] The first anti-slip structure is a thread 4 , which is arranged along the length direction of the needle body 21 , and the thread 4 is any one of a rectangular thread 4 , a triangular thread 4 , a trapezoidal thread 4 or a sawtooth thread 4 .
[0081] The bottom diameter of the thread 4 is 2mm-4mm, the outer diameter of the thread 4 is 4mm-8mm, and the pitch of the thread 4 is 0.5mm-2mm.
[0082] In this embodiment, a second anti-slip structure is provided on the needle 22, and the second anti-slip structure is a plurality of annular protrusions 6, and the plurality of annular protrusions 6 are arranged on the needle 22 along the axial direction of the needle 22; and the height of the annular protrusions 6 gradually decreases from one end away from the needle body 21 to the end close to the needle body 21, and the distance between two adjacent annular protrusions 6 is 0.5mm-1.5mm.
[0083] The annular protrusion 6 can improve the reliability of the contact between the terminal pin 2 and the pin hole 11. Moreover, the annular protrusion 6 with a gradually changing height can make the terminal pin 2 firmly clamped in the pin hole 11 and not easy to loosen.
[0084] Example 7
[0085] like Figure 1-Figure 8 As shown, this embodiment includes the above-mentioned wiring device, which includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11; the wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other, the needle head 22 is inserted into the pin hole 11, the needle body 21 is exposed outside the pin hole 11, and the outer wall of the needle body 21 is provided with a first anti-slip structure.
[0086] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0087] The first anti-slip structure is a thread 4 , which is arranged along the length direction of the needle body 21 , and the thread 4 is any one of a rectangular thread 4 , a triangular thread 4 , a trapezoidal thread 4 or a sawtooth thread 4 .
[0088] The bottom diameter of the thread 4 is 2mm-4mm, the outer diameter of the thread 4 is 4mm-8mm, and the pitch of the thread 4 is 0.5mm-2mm.
[0089] The needle head 22 is provided with a second anti-slip structure, and the second anti-slip structure is a thread 4 .
[0090] In this embodiment, a stop cap 7 is provided at the end of the needle body 21, and the stop cap 7 is connected to the thread 4 of the needle body 21. The stop cap 7 protrudes outward from the outer wall of the needle body 21, and the protruding height of the stop cap 7 is 0.1mm-0.5mm.
[0091] The stop cap 7 can effectively prevent the enameled wire 3 from sliding off, thus ensuring stable operation of the motor.
[0092] Preferably, the stop cap 7 is detachable, and the stop cap 7 is connected to the needle body 21 by a thread 4, so that the stop cap 7 of different sizes can be replaced as needed, or the stop cap 7 can be replaced in time when it is damaged, thereby ensuring the stop cap 7 has a limiting effect on the enameled wire 3.
[0093] Example 8
[0094] This embodiment provides a stator, which includes a stator core and the wiring device as described above, and the pin base 1 is installed on the stator core.
[0095] The wiring device includes a pin base 1 and a wiring pin 2. The pin base 1 is provided with a plurality of pin holes 11. The wiring pin 2 includes a needle head 22 and a needle body 21 connected to each other. The needle head 22 is inserted into the pin hole 11, and the needle body 21 is exposed outside the pin hole 11. The outer wall of the needle body 21 is provided with a first anti-slip structure.
[0096] The cross section of the needle head 22 and / or the needle body 21 is circular or elliptical.
[0097] The first anti-slip structure is a thread 4 , which is arranged along the length direction of the needle body 21 , and the thread 4 is any one of a rectangular thread 4 , a triangular thread 4 , a trapezoidal thread 4 or a sawtooth thread 4 .
[0098] The thread 4 can increase the friction between the enameled wire 3 and the terminal pin 2 , so that the enameled wire 3 is firmly wound around the enameled wire 3 .
[0099] The bottom diameter of the thread 4 is 2mm-4mm, the outer diameter of the thread 4 is 4mm-8mm, and the pitch of the thread 4 is 0.5mm-2mm.
[0100] The needle head 22 is provided with a second anti-slip structure, and the second anti-slip structure is a thread 4 .
[0101] In this embodiment, a stop cap 7 is provided at the end of the needle body 21, and the stop cap 7 is connected to the thread 4 of the needle body 21. The stop cap 7 protrudes outward from the outer wall of the needle body 21, and the protruding height of the stop cap 7 is 0.1mm-0.5mm.
[0102] Example 9
[0103] This embodiment provides a motor, which includes a rotor and the stator as described above, wherein the rotor is arranged at the center of the stator, and the axis of the rotor coincides with the axis of the stator.
[0104] More specifically, the motor of the present application can be a DC motor, an asynchronous motor, and a synchronous motor. In addition to the above-mentioned stator and rotor, it also includes other accessories of the motor, such as a controller, a housing, etc.
[0105] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A wiring device, characterized in that: include: A pin base (1), wherein the pin base (1) is provided with a plurality of pin holes (11); A wiring needle (2), the wiring needle (2) comprising a needle head (22) and a needle body (21) connected to each other, the needle head (22) being inserted into the pin insertion hole (11), the needle body (21) being exposed outside the pin insertion hole (11), and the outer wall of the needle body (21) being provided with a first anti-slip structure.
2. The wiring device according to claim 1, characterized in that: The cross section of the needle head (22) and / or the needle body (21) is circular or elliptical.
3. The wiring device according to claim 1, characterized in that: The first anti-slip structure is a thread (4), the thread (4) is arranged along the length direction of the needle body (21), and the thread (4) is any one of a rectangular thread (4), a triangular thread (4), a trapezoidal thread (4) or a sawtooth thread (4).
4. The wiring device according to claim 3, characterized in that: The bottom diameter of the thread (4) is 2 mm to 4 mm, the outer diameter of the thread (4) is 4 mm to 8 mm, and the pitch of the thread (4) is 0.5 mm to 2 mm.
5. The wiring device according to claim 1, characterized in that: The first anti-slip structure is a mesh pattern (5), the mesh pattern (5) is recessed inward from the surface of the needle body (21), and the recessed depth of the mesh pattern (5) is 0.5 mm-1 mm.
6. The wiring device according to claim 1, characterized in that: The needle head (22) is provided with a second anti-slip structure, and the second anti-slip structure is a thread (4).
7. The wiring device according to claim 1, characterized in that: The needle head (22) is provided with a second anti-slip structure, which is a plurality of annular protrusions (6). The plurality of annular protrusions (6) are arranged on the needle head (22) along the axial direction of the needle head (22); and the height of the annular protrusions (6) gradually decreases from one end away from the needle body (21) to one end close to the needle body (21), and the distance between two adjacent annular protrusions (6) is 0.5 mm-1.5 mm.
8. The wiring device according to any one of claims 1 to 7, characterized in that: A stop cap (7) is provided at the end of the needle body (21), the stop cap (7) being connected to the needle body (21) by a thread (4), the stop cap (7) protruding outward from the outer wall of the needle body (21), and the protruding height of the stop cap (7) is 0.1 mm-0.5 mm.
9. A stator, characterized in that: It comprises a stator core and a wiring device as claimed in any one of claims 1 to 8, wherein the pin base (1) is mounted on the stator core.
10. A motor, characterized in that: The invention comprises a rotor and the stator as claimed in claim 9, wherein the rotor is arranged at the center of the stator, and the axis of the rotor coincides with the axis of the stator.