Wire harness connector of driving motor

Abstract

The utility model provides a wire harness connector of a driving motor, and aims to solve the problem that a conventional connector is easy to loosen and fall off and is difficult to disassemble in a high-vibration environment, thereby improving the safety and reliability of a system. The wire harness connector comprises a first wire harness fixing device and a second wire harness fixing device, the first wire harness fixing device is provided with an axial guide groove and an annular guide groove, and the second wire harness fixing device is matched with the guide groove through a limiting boss on the outer surface of the second wire harness fixing device, so that axial first-stage fixing and radial second-stage fixing are achieved. And the elastic limiting mechanism further ensures the radial stability. The design not only effectively prevents the wire harness from falling off, but also facilitates later maintenance, thereby improving the overall reliability and safety of the new energy automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of drive motors, in particular to a connector structure of a drive motor and a wiring harness. Background Art

[0002] With the widespread application of new energy vehicles, the performance and stability of the drive motor as the core power source of the vehicle directly affect the safety and reliability of the entire vehicle. The drive motor harness is a key component connecting the drive motor and the power system, and is mainly used to achieve the transmission of power and signals. However, in actual application, due to the uneven road surface and frequent vibration when the vehicle is driving, the drive motor harness connector often faces the risk of loosening or even falling off, which may not only cause poor contact or power failure of the power system, but also cause high-voltage electric shock accidents in severe cases, posing a huge safety hazard.

[0003] Traditional drive motor harness connectors usually use threaded or snap-on connections, but these connection methods often cannot ensure the stability of the harness in long-term high-frequency vibration environments. In particular, the threaded part of the threaded connector is easily damaged by wear or improper operation. Once the connector is not firmly fixed, the harness may loosen or fall off while the vehicle is driving. If these problems are not discovered and handled in time, they may cause the connector port to fail, which in turn affects the normal operation of the high-voltage harness system and even cause serious safety accidents such as overheating and fire. Utility Model Content

[0004] In view of the above situation, the utility model provides a drive motor wiring harness connector, which realizes the primary axial fixation and the secondary radial fixation of the wiring harness connector by arranging an axial guide groove and an annular guide groove in a first wiring harness fixture, and forming a limiting boss on the second wiring harness fixture to cooperate with the aforementioned axial guide groove and annular guide groove, thereby solving the problems that the existing drive motor wiring harness connector is prone to loosening and falling off during use, cannot maintain the stability of the wiring harness in a high vibration environment, and thus affects the safety and reliability of the drive motor system, and the traditional connector is difficult to disassemble during maintenance, which increases the complexity and cost of maintenance work. The utility model provides a drive motor wiring harness connector that is anti-falling and easy to disassemble, so as to facilitate later maintenance and maintenance while ensuring the stability of the wiring harness in a high vibration environment, thereby improving the overall reliability and safety of new energy vehicles.

[0005] To achieve the above object, the technical solution adopted by the present utility model is to provide a driving motor wire harness connector. The driving motor includes a motor main body and a motor controller provided on the motor main body. The motor controller is provided with a three-phase socket, and a three-cable wire harness is fixedly installed through the wire harness connector on the three-phase socket. It is characterized in that the wire harness connector includes: a first wire harness fixator having three outer sleeves corresponding to the three-phase socket. At least one axial guide groove and at least one annular guide groove are formed inside each of the outer sleeves. The annular guide groove is recessed radially on the inner surface of the outer sleeve. The axial guide groove extends axially through both ends of the outer sleeve and communicates with the annular guide groove. Three second wire harness fixators are all formed into circular tubular members and are correspondingly inserted into the three outer sleeves of the first wire harness fixator. A through hole is formed through the inside of each of the second wire harness fixators, and the cable wire harness is inserted and connected to the three-phase socket through the through hole. At least one limiting boss is convexly provided on the outer surface of each of the second wire harness fixators. Each of the second wire harness fixators is linearly slidably inserted into the inside of the outer sleeve along the axial guide groove through the limiting boss, and the limiting boss rotates and slides into the annular guide groove when aligned with the annular guide groove, so as to form a primary fixation with axial limitation between the second wire harness fixator and the first wire harness fixator. An elastic limiting mechanism is assembled radially between the mutually sleeved outer sleeve and the second wire harness fixator to form a secondary fixation with radial elastic limitation.

[0006] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that a long receiving groove is axially recessed on the hole wall of the through hole of the second wire harness fixator, and the long receiving groove is for installing a damping strip. The cable wire harness is shock-absorbed by passing through the inside of the through hole and contacting the damping strip.

[0007] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that four long receiving grooves are axially recessed on the hole wall of the through hole at equal intervals. One damping strip is installed inside each of the long receiving grooves.

[0008] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that the damping strip is formed with a relative bottom plane and an annular joint surface, and two side planes are connected along the length direction between the bottom plane and the annular joint surface. When the damping strip is installed in the long receiving groove, the bottom plane contacts the groove bottom of the long receiving groove, and the annular joint surface covers the surface of the cable wire harness.

[0009] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that a limiting hole seat is integrally formed at the end of each of the outer sleeves of the first wire harness fixator. The limiting hole seat is sequentially provided with a large-diameter threaded hole, a small-diameter through hole and a tapered hole that communicate with each other along the radial direction; the bottom of the large-diameter threaded hole shrinks to form a shoulder that connects to the small-diameter through hole, the bottom of the small-diameter through hole shrinks to form the tapered hole, and the tapered hole penetrates through the tube wall of the outer sleeve; spherical grooves are provided on the outer surface of each of the second wire harness fixators at the same circumferential position of the limiting boss; the elastic limiting mechanism includes a limiting steel ball, a compression spring assembly and a fastening bolt, which are sequentially placed in the limiting hole seat of the first wire harness fixator. The limiting steel ball is inserted and limited in the tapered hole, the fastening bolt is locked in the large-diameter threaded hole, and the compression spring assembly is accommodated in the small-diameter through hole and abuts against the limiting steel ball and the fastening bolt at both ends respectively, so that the limiting steel ball is elastically telescopic and clamped in the tapered hole; thereby, by rotating the second wire harness fixator relative to the outer sleeve, the spherical groove is aligned with the tapered hole to form a spherical space, and the limiting steel ball protrudes and is accommodated in the spherical space to form a secondary fixation between the first wire harness fixator and the second wire harness fixator.

[0010] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that each of the second wire harness fixators is axially provided with four limiting bosses, and four spherical grooves are respectively and independently provided at the same circumferential position of the four limiting bosses.

[0011] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that each of the second wire harness fixators is axially provided with two rows of limiting bosses at symmetrical positions. Each row of limiting bosses has four, and two spherical grooves are provided on both sides of each limiting boss at the same circumferential position.

[0012] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that the compression spring assembly includes an outer sleeve spring and an inner embedded spring, and the inner embedded spring is inserted inside the outer sleeve spring.

[0013] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that the bottom of the motor main body has fixing plates arranged symmetrically in pairs, and mounting holes are provided on each of the fixing plates.

[0014] A further improvement of the wire harness connector of the driving motor of the present utility model lies in that the three-phase socket is provided with three plugging holes; a mounting plate is integrally formed at the same end of the three outer sleeves of the first wire harness fixator side by side; the first wire harness fixator is locked to the end of the motor controller through the mounting plate, and each of the outer sleeves penetrates through the mounting plate and communicates with each of the plugging holes for the cable harness to penetrate and connect with the plugging holes.

[0015] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0016] (1) For the wire harness connector of the driving motor of the utility model, a boss plug-in fit (the fit of the axial guide groove, the annular guide groove and the limiting boss) and an elastic limiting mechanism are adopted between the first wire harness fixer and the second wire harness fixer to achieve secondary fixation. The second wire harness fixer is inserted and installed in the first wire harness fixer, and the two jointly accommodate the cable wire harness of the driving motor. The ends of the first wire harness fixer and the second wire harness fixer are connected to the three-phase socket of the motor controller. The design of the wire harness connector of the driving motor of the utility model greatly enhances the convenience of disassembly operation while ensuring the connection stability.

[0017] (2) Between the second wire harness fixer of the utility model and the cable wire harness, damping strips for shock absorption are installed. By arranging the damping strips in an annular array, with an angle of about 90° between each group, two groups of annular arrays are formed. This layout effectively reduces the damage to the cable wire harness caused by vibration or impact, and at the same time ensures that the cable wire harness is more stable and reliable when transmitting electrical signals. Further combined with the above-mentioned boss plug-in fit and the steel ball fixation design of the elastic limiting mechanism, the wire harness connector of the driving motor of the utility model not only improves the connection stability of the cable wire harness and the convenience of disassembly, but also significantly enhances the anti-vibration performance of the overall system, providing a reliable guarantee for the stable operation of the driving motor wire harness connector.

[0018] (3) The elastic limiting mechanism of the utility model is installed on the large-diameter screw hole of the first wire harness fixer through a fastening bolt. By screwing in the fastening bolt to compress the compression spring assembly, the limiting steel ball is accurately embedded in the spherical groove of the second wire harness fixer under the action of elastic force, realizing the firm connection between the first wire harness fixer and the second wire harness fixer in the radial direction. This design not only ensures the reliability of the cable wire harness connection, but also provides a convenient way for disassembly and reinstallation, meeting the stable operation requirements of the driving motor wire harness connector under various working conditions.

[0019] These and other purposes, features and advantages of the utility model are fully reflected through the following detailed description and claims, and can be realized by the means, devices and their combinations specifically pointed out in the appended claims. Brief Description of the Drawings

[0020] Figure 1 is an exploded structural schematic diagram of the wire harness connector of the driving motor of the utility model.

[0021] Figure 2 is a partial exploded structural schematic diagram of the wire harness connector of the driving motor of the utility model.

[0022] Figure 3 It is a schematic diagram of the combined structure of the driving motor wire harness connector of the present utility model.

[0023] Figure 4 It is an enlarged schematic diagram of the partial structure of the driving motor wire harness connector of the present utility model.

[0024] Figure 5 It is a schematic diagram of the axial sectional structure of the driving motor wire harness connector of the present utility model.

[0025] Figure 6 It is a schematic diagram of the circumferential sectional structure of the driving motor wire harness connector of the present utility model.

[0026] The corresponding relationship between the reference numerals and the components is as follows:

[0027] Motor main body 10; fixing plate 11; mounting hole 12; motor controller 20; three-phase socket 21; insertion hole 211; first wire harness fixer 30; mounting plate 31; outer sleeve 32; limit hole seat 33; large-diameter screw hole 331; small-diameter through hole 332; tapered hole 333; axial guide groove 34; annular guide groove 35; second wire harness fixer 40; through hole 41; spherical groove 42; limit boss 43; long receiving groove 44; elastic limit mechanism 50; limit steel ball 51; compression spring assembly 52; outer spring 521; embedded spring 522; fastening bolt 53; external thread 531; hexagonal hole 532; cable harness 60; damping strip 70; bottom plane 71; circumferential joint surface 72; side plane 73. Detailed implementation manners

[0028] Here, the detailed specific implementation manners of the present utility model will be disclosed. However, it should be understood that the disclosed implementation manners are only typical examples of the present utility model, and the present utility model can be implemented in various alternative forms. Therefore, the specific structural and functional details disclosed herein are not restrictive, but are only representative principles for explaining different implementation manners to those skilled in the art based on the claims.

[0029] For the convenience of understanding the present utility model, the following will be described in conjunction with the drawings and embodiments.

[0030] Please refer to Figures 1 to 6The utility model provides a harness connector for a driving motor, the driving motor includes a motor host 10 and a motor controller 20 arranged on the motor host 10, the motor controller 20 is provided with a three-phase socket 21, the three-phase socket 21 is fixedly installed with a three-cable harness 60 through the harness connector; wherein the harness connector includes a first harness fixture 30 with three outer sleeves 32, three second harness fixtures 40, three sets of elastic limiting mechanisms 50, three cable harnesses 60 and a plurality of damping strips 70. The first harness fixture 30 is installed on the three-phase socket 21, and a second harness fixture 40 and a cable harness 60 are inserted inside each outer sleeve 32 of the first harness fixture 30. The first harness fixture 30 and the second harness fixture 40 are fixed at two levels through their internal concave-convex buckle structures and the elastic limiting mechanism 50, so as to improve the stability of the connection of the cable harness 60 and the convenience of disassembly, and enhance the anti-vibration performance of the overall system, so as to provide a reliable guarantee for the stable operation of the harness connector for the driving motor.

[0031] like Figure 1 , Figure 3 Four symmetrical fixing plates 11 are installed at the bottom of the motor host 10. Each fixing plate 11 is provided with a mounting hole 12 for fixing the motor host 10 as a whole to ensure that the motor host 10 can be stably and reliably installed in the working environment.

[0032] like Figure 1 , Figure 3 The motor controller 20 is installed on the top of the motor host 10. The motor controller 20 is provided with a three-phase socket 21. The three-phase socket 21 has three plug holes 211 for independent connection with three cable harnesses 60 respectively.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, the first wiring harness fixture 30 is an integrally formed component, and the first wiring harness fixture 30 is formed with a mounting plate 31 and three outer sleeves 32 extending in the same direction from the mounting plate 31; the interior of each outer sleeve 32 passes through both ends and passes through the mounting plate 31; the first wiring harness fixture 30 is screwed and installed on the end surface of the motor controller 20 through the mounting plate 31, so that the three outer sleeves 32 are correspondingly connected to the three plug holes 211, so that the cable harness 60 can be passed through and fixed inside the first wiring harness fixture 30.

[0034] In the embodiment of the utility model, the three outer sleeves 32 of the first harness fixture 30 have connecting structures outside that partially cover and combine with each other, so that the three outer sleeves 32 are firmly and integrally formed on the mounting plate 31 .

[0035] Refer to Figure 1 , define the axial direction as the direction extending along the axis of the circular tubular outer sleeve 32, the radial direction as the direction perpendicular to the axial direction, and the circumferential direction as the direction of rotation around the axis of the outer sleeve 32. Similarly, the second wire harness fixer 40 is axially inserted into the inside of the outer sleeve 32 and has the same radial and circumferential directions as the outer sleeve 32.

[0036] As Figure 1 , Figure 2 and Figure 4 , Figure 5 shown, illustrate the primary fixing structure of the first wire harness fixer 30 and the second wire harness fixer 40 of the present utility model. Two axial guide grooves 34 (refer to Figure 2 , Figure 5 ) are axially formed inside each of the outer sleeves 32 of the first wire harness fixer 30, and four annular guide grooves 35 (refer to Figure 5 ) are circumferentially formed at intervals; the conical hole 333 penetrates through the pipe wall and communicates with the annular guide groove 35 at the most distal end of the outer sleeve 32 on the annular guide groove 35 closest to the end opening of the outer sleeve 32.

[0037] Three second wire harness fixers 40 are provided corresponding to the number of the outer sleeves 32 of the first wire harness fixer 30. Each of the second wire harness fixers 40 is formed into a circular tubular member with both ends penetrating, and is installed inside the first wire harness fixer 30 in such a way that one second wire harness fixer 40 is correspondingly inserted into one outer sleeve 32. Two rows of limiting bosses 43 are provided on the outer surface of each of the second wire harness fixers 40 at circumferential positions opposite to each other by 180° along the axial direction, the number of each row of limiting bosses 43 is four, and two spherical grooves 42 are respectively provided on both sides of each of the limiting bosses 43 at the same circumferential position, so that two limiting bosses 43 arranged at intervals of 180° and four spherical grooves 42 arranged at intervals of 90° are provided on the circumferential section at the same axial position.

[0038] Thereby, each of the second wire harness fixers 40 can be linearly inserted into the inside thereof through the limiting bosses 43 along the axial guide grooves 34 of the outer sleeve 32, and when the limiting bosses 43 are aligned with the annular guide grooves 35, by rotating the second wire harness fixer 40 relative to the outer sleeve 32, the limiting bosses 43 are slidably embedded into the annular guide grooves 35, thereby forming a primary fixation between the second wire harness fixer 40 and the first wire harness fixer 30 to prevent axial movement (axial limitation) between the two.

[0039] In addition, the second wire harness fixer 40 can further adjust the number of limiting bosses 43 of the second wire harness fixer 40 embedded in the annular guide groove 35 according to the usage requirements, so as to adjust the depth of the second wire harness fixer 40 inserted into the outer sleeve 32. As Figure 5 , it shows the relative position where only one group of limiting bosses 43 of the second wire harness fixer 40 is embedded in the annular guide groove 35; two groups, three groups or four groups of limiting bosses 43 at different axial positions of the second wire harness fixer 40 can be embedded into the annular guide groove 35.

[0040] Accordingly, inside the wire harness connector of the present utility model, by arranging the annular guide groove 35 and the axial guide groove 34 in an annular equidistant array, not only the installation stability of the second wire harness fixer 40 is enhanced, but also the positioning of the second wire harness fixer 40 can be flexibly adjusted according to different installation requirements, realizing more effective and precise protection for the cable harness 60, significantly improving the stability and reliability of the wire harness connector, and meeting the fixing requirements of the cable harness 60 in different application scenarios.

[0041] In the embodiment of the present utility model, the damping strip 70 is formed with a relative bottom plane 71 and an annular joint surface 72, and two side planes 73 are connected between the bottom plane 71 and the annular joint surface 72 along the length direction (parallel to the axis); the damping strip 70 is installed in the long receiving groove 44, the bottom plane 71 contacts the bottom of the long receiving groove 44, and the annular joint surface 72 covers the surface of the cable harness 60.

[0042] As Figure 1 , Figure 2 and Figure 5 , Figure 6 shown, it shows that the first wire harness fixer 30 and the second wire harness fixer 40 of the present utility model form a two - stage fixed structure with radial limitation through the elastic limiting mechanism 50.

[0043] As Figure 6 shown, at the end of each outer sleeve 32 of the first wire harness fixer 30, a limiting hole seat 33 is integrally formed, and the limiting hole seat 33 is sequentially provided with a large - diameter screw hole 331, a small - diameter through - hole 332 and a tapered hole 333 that are mutually communicated along the radial direction; the bottom of the large - diameter screw hole 331 shrinks to form a shoulder connecting with the small - diameter through - hole 332, the bottom of the small - diameter through - hole 332 shrinks to form the tapered hole 333, and the tapered hole 333 penetrates through the wall of the outer sleeve 32.

[0044] The elastic limiting mechanism 50 includes a limiting steel ball 51, a compression spring assembly 52 and a fastening bolt 53, which are sequentially placed into the limiting hole seat 33 of the first wire harness fixer 30; the aperture of the tapered hole 333 is slightly smaller than the ball diameter of the limiting steel ball 51, so that the limiting steel ball 51 is inserted and limited in the tapered hole 333, the fastening bolt 53 is locked in the large-diameter threaded hole 331, the compression spring assembly 52 is accommodated in the small-diameter through hole 332, and both ends thereof are respectively pressed between the limiting steel ball 51 and the fastening bolt 53, so that the limiting steel ball 51 can be contracted and immersed into the tapered hole 333 by compressing the compression spring assembly 52, and thus the limiting steel ball 51 is elastically and telescopically clamped in the tapered hole 333;

[0045] Thereby, by rotating the second wire harness fixer 40 relative to the outer sleeve 32, the spherical groove 42 is aligned with the tapered hole 333 to form a spherical space, and the limiting steel ball 51 is protruded and accommodated in the spherical space, forming a limiting structure for restricting the rotation of the second wire harness fixer 40 relative to the outer sleeve 32, and forming a secondary fixation between the first wire harness fixer 30 and the second wire harness fixer 40. In addition, due to the elastic telescopic ability of the limiting steel ball 51, when a force greater than the compression elastic force of the compression spring assembly 52 is applied, the limiting steel ball 51 can be contracted, so that the second wire harness fixer 40 can rotate relative to the outer sleeve 32 again until the limiting steel ball 51 aligns with another spherical groove 42.

[0046] In the embodiment of the present invention, in order to ensure the secondary fixation ability between the second wire harness fixer 40 and the outer sleeve 32 by the elastic limiting mechanism 50, the compression spring assembly 52 of the elastic limiting mechanism 50 preferably includes an outer sleeve spring 521 and an inner embedded spring 522. By making the inner embedded spring 522 pass through the inside of the outer sleeve spring 521, the outer sleeve spring 521 is used to sleeve and abut against a larger area of the limiting steel ball 51 to ensure that the limiting steel ball 51 will not be displaced due to entering the small-diameter through hole 332 with a larger aperture after being compressed, and the inner embedded spring 522 can ensure sufficient clamping force to avoid the secondary fixation force for the rotation of the second wire harness fixer 40 relative to the outer sleeve 32.

[0047] Accordingly, the secondary fixation design of the first wire harness fixer 30 and the second wire harness fixer 40 integrates an advanced and efficient mechanical locking principle, showing efficient and reliable characteristics. This design not only achieves the effect of stable connection, but also significantly improves the convenience of disassembly operation by means of a simplified operation procedure. Based on the efficient use of space, this design greatly simplifies the disassembly process, providing great convenience for later maintenance, repair and other work. This innovative secondary locking design fully reflects the significant advantages of the present invention in improving operation efficiency and maintenance convenience.

[0048] As Figure 2 , a through hole 41 is formed through the inside of each of the second wire harness fixers 40. As Figure 4 , Figure 5 , the cable wire harness 60 is inserted and connected to the three-phase socket 21 by passing through the through hole 41. In the embodiment of the present invention, in order to reduce the damage caused to the cable wire harness 60 due to vibration or impact, and at the same time ensure that the cable wire harness 60 is more stable and reliable when transmitting electrical signals, the wire harness connector of the present invention further axially provides a long accommodating groove 44 on the hole wall of the through hole 41 of the second wire harness fixer 40. The long accommodating groove 44 is for installing a damping strip 70 so that the cable wire harness 60 obtains a damping effect by contacting the damping strip 70.

[0049] In the embodiment of the present invention, it is preferable that the damping strips 70 are arranged in an even number and equally angularly distributed in the circumferential direction. Specifically, as Figure 2 , Figure 4 shown, each of the second wire harness fixers 40 is preferably provided with four long accommodating grooves 44 to provide four damping strips 70 inside each second wire harness fixer 40, and the damping strips 70 are spaced apart at the same angular interval in the circumferential direction to evenly disperse the force.

[0050] The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments. Those of ordinary skill in the art can make various variations to the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the present invention will take the scope defined by the appended claims as the protection scope of the present invention.

Claims

1. A wire harness connector for a drive motor, the drive motor comprising a motor main body and a motor controller provided on the motor main body, the motor controller being provided with a three-phase socket, and a three-cable wire harness being fixedly installed through the wire harness connector on the three-phase socket; characterized in that, The wire harness connector includes: A first wire harness fixator having three outer sleeves corresponding to the three-phase socket, with at least one axial guide groove and at least one annular guide groove formed inside each of the outer sleeves; the annular guide groove is recessed radially on the inner surface of the outer sleeve; the axial guide groove extends axially through both ends of the outer sleeve and communicates with the annular guide groove; Three second wire harness fixators, all formed as circular tubular members and correspondingly inserted inside the three outer sleeves of the first wire harness fixator; a through hole is provided through the interior of each of the second wire harness fixators, and the cable harness is inserted and connected to the three-phase socket by passing through the through hole; at least one limiting boss protrudes from the outer surface of each of the second wire harness fixators, and each of the second wire harness fixators is linearly slid inserted into the interior of the outer sleeve along the axial guide groove through the limiting boss, and the limiting boss rotates and slides into the annular guide groove when aligned with the annular guide groove, so as to form a primary fixation with axial limitation between the second wire harness fixator and the first wire harness fixator; An elastic limiting mechanism, assembled radially between the mutually sleeved outer sleeve and the second wire harness fixator to form a secondary fixation with radial elastic limitation.

2. The wire harness connector of the drive motor according to claim 1, wherein: A long receiving groove is axially recessed on the pore wall of the through hole of the second wire harness fixator for installing a damping strip; the cable harness is shock-absorbed by passing through the interior of the through hole and contacting the damping strip.

3. The wire harness connector of the drive motor according to claim 2, wherein: Four long receiving grooves are axially recessed on the pore wall of the through hole at equal intervals; one damping strip is installed inside each of the long receiving grooves.

4. The wire harness connector of the drive motor according to claim 2 or 3, wherein: The damping strip is formed with a relative bottom plane and an annular joint surface, and two side planes are connected along the length direction between the bottom plane and the annular joint surface; when the damping strip is installed in the long receiving groove, the bottom plane contacts the bottom of the long receiving groove, and the annular joint surface covers the surface of the cable harness.

5. The wire harness connector of the drive motor according to claim 1, wherein: A limiting hole seat is integrally formed at the end of each of the outer sleeves of the first wire harness fixator, and a large-diameter screw hole, a small-diameter through hole and a tapered hole that communicate with each other are sequentially formed through the limiting hole seat in the radial direction; the bottom of the large-diameter screw hole shrinks to form a shoulder connecting with the small-diameter through hole, the bottom of the small-diameter through hole shrinks to form the tapered hole, and the tapered hole penetrates the tube wall of the outer sleeve; A spherical groove is provided on the outer surface of each of the second wire harness fixators at the same circumferential position as the limiting boss; The elastic limit mechanism includes a limit steel ball, a compression spring assembly and a fastening bolt, which are sequentially placed into the limit hole seat of the first wire harness fixer. The limit steel ball is inserted and limited in the conical hole. The fastening bolt is locked in the large-diameter screw hole. The compression spring assembly is accommodated in the small-diameter through hole, and both ends thereof respectively press against the limit steel ball and the fastening bolt, so that the limit steel ball is elastically telescopic and clamped in the conical hole; Thereby, by rotating the second wire harness fixer relative to the outer sleeve, the spherical groove is aligned with the conical hole to form a spherical space, and the limit steel ball protrudes and is accommodated in the spherical space to form a secondary fixation between the first wire harness fixer and the second wire harness fixer.

6. The wire harness connector of the drive motor according to claim 5, wherein: Each of the second wire harness fixers is axially provided with four limit bosses, and the four limit bosses are respectively and independently provided with four spherical grooves at the same toroidal position.

7. The wire harness connector of the drive motor according to claim 5, wherein: Each of the second wire harness fixers is axially provided with two columns of limit bosses at symmetrical positions, each column of limit bosses has four, and each limit boss is provided with two spherical grooves on both sides of the same toroidal position.

8. The wire harness connector of the drive motor according to claim 5, wherein: The compression spring assembly includes an outer sleeve spring and an inner embedded spring, and the inner embedded spring is inserted inside the outer sleeve spring.

9. The wire harness connector of the drive motor according to claim 1, wherein: The bottom of the motor main body has fixing plates symmetrically arranged in pairs, and each fixing plate is provided with a mounting hole.

10. The wire harness connector of the drive motor according to claim 1, wherein: The three-phase socket is provided with three plug holes; The three outer sleeves of the first wire harness fixer are integrally formed with a mounting plate at the same end side by side; the first wire harness fixer is locked to the end of the motor controller through the mounting plate, and the inside of each outer sleeve penetrates through the mounting plate and communicates with each plug hole for the cable harness to penetrate and connect with the plug hole.

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