Wire harness connector of driving motor

Abstract

The invention provides a wire harness connector of a driving motor, and aims to solve the problem that an existing connector is easy to loosen and fall off and is difficult to disassemble in a high-vibration environment, so that the safety and reliability of a system are improved. 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 present invention relates to the technical field of drive motors, and in particular to a connector structure between 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. Summary of the invention

[0004] In view of the above situation, the present invention 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 purpose is to provide a drive motor wiring harness connector that is anti-falling and easy to disassemble, so as to facilitate later 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-mentioned purpose, the technical solution adopted by the present invention is to provide a drive motor harness connector, the drive motor includes a motor host and a motor controller arranged on the motor host, the motor controller is provided with a three-phase socket, and the three-phase socket is fixedly installed with a three-cable harness through the harness connector; it is characterized in that the harness connector includes: a first harness fixture, having three outer sleeves corresponding to the three-phase sockets, each of the outer sleeves is provided with at least one axial guide groove and at least one annular guide groove; the annular guide groove is radially recessed and formed on the inner surface of the outer sleeve; the axial guide groove extends axially through both ends of the outer sleeve and is connected to the annular guide groove; three second harness fixtures are all formed as round tubular components and are correspondingly inserted Inside the three outer sleeves of the first wiring harness fixture; each of the second wiring harness fixtures is penetrated with a through hole inside, and the cable harness is inserted and connected to the three-phase socket through the through hole; the outer surface of each of the second wiring harness fixtures is convexly provided with at least one limiting boss, and each of the second wiring harness fixtures is inserted into the inner part of the outer sleeve by sliding linearly along the axial guide groove through the limiting boss, and the limiting boss is rotated and slid into the annular guide groove when aligned with the annular guide groove, so that the second wiring harness fixture and the first wiring harness fixture form an axially restricted primary fixation; an elastic limiting mechanism is radially assembled between the mutually sleeved outer sleeve and the second wiring harness fixture to form a radially elastically restricted secondary fixation.

[0006] A further improvement of the wiring harness connector of the drive motor of the present invention is that a long groove is axially recessed on the wall of the through hole of the second wiring harness fixture, and the long groove is used to install a damping strip; the cable harness is vibrated by being passed through the through hole and contacting the damping strip.

[0007] A further improvement of the wiring harness connector for the drive motor of the present invention is that four long receiving grooves are axially recessed and arranged at equal intervals on the hole wall of the penetration hole; and a damping strip is installed inside each of the long receiving grooves.

[0008] A further improvement of the wiring harness connector for the drive motor of the present invention is that the damping strip is formed with a bottom plane and a ring joint surface relative to each other, and the bottom plane and the ring joint surface are connected by two side planes along the length direction; the damping strip is installed in the long receiving groove, the bottom plane contacts the bottom of the long receiving groove, and the ring joint surface covers the surface of the cable harness.

[0009] A further improvement of the wiring harness connector for the drive motor of the present invention is that a limiting hole seat is integrally formed at the end of each outer sleeve of the first wiring harness fixture, and the limiting hole seat is sequentially arranged along the radial direction to form a large-diameter screw hole, a small-diameter through hole and a tapered hole that are interconnected; the bottom of the large-diameter screw hole shrinks to form a shoulder connected to the small-diameter through hole, and 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; the outer surface of each of the second wiring harness fixtures is provided with a spherical groove at the same annular position of the limiting boss; the elastic limiting mechanism includes a limiting steel ball, a compression spring assembly and a fastening bolt and is sequentially arranged The first wiring harness fixture is inserted into the limiting hole seat of the first wiring harness fixture, the limiting steel ball is passed through and limited in the tapered 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 the two ends are respectively pressed against the limiting steel ball and the fastening bolt, so that the limiting steel ball is elastically clamped in the tapered hole; thereby, the second wiring harness fixture is rotated relative to the outer sleeve so that the spherical groove is aligned with the tapered hole to form a spherical space, so that the limiting steel ball protrudes and is accommodated in the spherical space, so as to form a secondary fixation between the first wiring harness fixture and the second wiring harness fixture.

[0010] A further improvement of the wiring harness connector for the drive motor of the present invention is that each of the second wiring harness holders is provided with four limiting bosses along the axial direction, and the four limiting bosses are independently provided with four spherical grooves at the same annular position thereof.

[0011] A further improvement of the wiring harness connector of the drive motor of the present invention is that each of the second wiring harness fixtures is provided with two rows of the limiting bosses at symmetrical positions along the axial direction, each row of the limiting bosses is four, and each limiting boss is provided with two spherical grooves on both sides of the same annular position thereof.

[0012] A further improvement of the wiring harness connector of the drive motor of the present invention is that the compression spring assembly includes an outer sleeve spring and an inner sleeve spring, and the inner sleeve spring is inserted into the inner sleeve spring.

[0013] A further improvement of the wiring harness connector of the drive motor of the present invention is that the bottom of the motor mainframe has fixing plates symmetrically arranged in pairs, and each of the fixing plates is provided with a mounting hole.

[0014] A further improvement of the wiring harness connector of the drive motor of the present invention is that the three-phase socket is provided with three plug holes; the three outer sleeves of the first wiring harness fixture are arranged side by side and integrally formed with a mounting plate at the same end; the first wiring harness fixture is locked to the end of the motor controller through the mounting plate, and the interior of each outer sleeve passes through the mounting plate and is connected to each plug hole, so that the cable harness can pass through and connect to the plug hole.

[0015] The present invention adopts the above technical solution, so it has the following beneficial effects: (1) The wiring harness connector of the drive motor of the present invention is fixed by using a boss plug-in type match (cooperation between the axial guide groove, the annular guide groove and the limit boss) and an elastic limit mechanism between the first and second wiring harness fixtures, thereby achieving secondary fixation. The second wiring harness fixture is plugged and installed in the first wiring harness fixture, and the two together accommodate the cable harness of the drive motor. The ends of the first and second wiring harness fixtures are connected to the three-phase socket of the motor controller. The design of the wiring harness connector of the drive motor of the present invention ensures the stability of the connection while greatly enhancing the convenience of the disassembly operation.

[0016] (2) A damping strip for shock absorption is installed between the second harness holder of the present invention and the cable harness. The damping strips are arranged in a circular array, with each group being about 90° apart, to form two groups of circular arrays. This layout can effectively reduce damage to the cable harness caused by vibration or impact, while ensuring that the cable harness is more stable and reliable when transmitting power signals. Further combined with the aforementioned boss plug-in fit and the steel ball fixing design of the elastic limit mechanism, the harness connector of the drive motor of the present invention not only improves the stability of the cable harness connection and the convenience of disassembly, but also significantly enhances the vibration resistance of the overall system, providing a reliable guarantee for the stable operation of the harness connector of the drive motor.

[0017] (3) The elastic limiting mechanism of the present invention is installed on the large-diameter screw hole of the first harness fixture by means of a fastening bolt, and the compression spring assembly is compressed by screwing the fastening bolt in, so that the limiting steel ball is precisely embedded in the spherical groove of the second harness fixture under the action of elastic force, thereby achieving a stable connection between the first harness fixture and the second harness fixture in the radial direction. This design not only ensures the reliability of the cable harness connection, but also provides a convenient disassembly and reinstallation method, meeting the stable working requirements of the drive motor harness connector under various working conditions.

[0018] These and other objects, features and advantages of the present invention will be more fully reflected in the following detailed description and claims, and may be achieved by the means, devices and combinations thereof particularly pointed out in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the exploded structure of the drive motor harness connector of the present invention.

[0020] Figure 2 It is a schematic diagram of the partial decomposition structure of the drive motor harness connector of the present invention.

[0021] Figure 3 It is a schematic diagram of the combined structure of the drive motor harness connector of the present invention.

[0022] Figure 4 It is a schematic diagram of the partial structure enlargement of the drive motor harness connector of the present invention.

[0023] Figure 5 It is a schematic diagram of the axial cross-sectional structure of the drive motor harness connector of the present invention.

[0024] Figure 6 It is a schematic diagram of the circumferential cross-sectional structure of the drive motor harness connector of the present invention.

[0025] The corresponding relationship between the reference numerals and the components is as follows: Motor host 10; fixing plate 11; mounting hole 12; motor controller 20; three-phase socket 21; plug hole 211; first harness fixture 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 harness fixture 40; through hole 41; spherical groove 42; limit boss 43; long containing groove 44; elastic limit mechanism 50; limit steel ball 51; compression spring assembly 52; outer sleeve spring 521; embedded spring 522; fastening bolt 53; external thread 531; hexagonal hole 532; cable harness 60; damping strip 70; bottom plane 71; annular joint surface 72; side plane 73. DETAILED DESCRIPTION

[0026] Detailed specific embodiments of the present invention will be disclosed herein. However, it should be understood that the disclosed embodiments are only typical examples of the present invention, and the present invention can be implemented in a variety of alternative forms. Therefore, the specific structural and functional details disclosed herein are not restrictive, but are only based on the claims as a representative principle to illustrate different embodiments to those skilled in the art.

[0027] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0028] See also Figures 1 to 6The present invention provides a harness connector for a drive motor, the drive 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 drive motor harness connector.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] In the embodiment of the present invention, the three outer sleeves 32 of the first harness fixture 30 have connecting structures outside that partially cover and combine the three outer sleeves 32 so that the three outer sleeves 32 are firmly and integrally formed on the mounting plate 31 .

[0033] See also Figure 1 , the direction extending along the axis of the cylindrical outer sleeve 32 is defined as the axial direction, the direction perpendicular to the axial direction is defined as the radial direction, and the direction rotating around the axis of the outer sleeve 32 is defined as the circumferential direction. Similarly, the second harness fixture 40 is inserted into the outer sleeve 32 along the axial direction and has the same radial and circumferential directions as the outer sleeve 32.

[0034] like Figure 1 , Figure 2 and Figure 4 , Figure 5 The figure shows the primary fixing structure of the first harness fixture 30 and the second harness fixture 40 of the present invention. The outer sleeve 32 of each of the first harness fixtures 30 is provided with two axial guide grooves 34 along the axial direction (refer to Figure 2 , Figure 5 ), and four annular guide grooves 35 are provided at intervals along the circumferential direction (refer to Figure 5 ); the outer sleeve 32 is formed on the annular guide groove 35 closest to the end opening of the outer sleeve 32, so that the tapered hole 333 passes through the tube wall and communicates with the annular guide groove 35 at the very end.

[0035] The second harness fixture 40 is provided with three corresponding to the number of the outer sleeve 32 of the first harness fixture 30. Each of the second harness fixtures 40 is formed as a circular tubular member with two ends through, and is installed inside the first harness fixture 30 in a manner that one second harness fixture 40 is inserted into one outer sleeve 32. The outer surface of each second harness fixture 40 is provided with two rows of limiting bosses 43 at 180° circumferential positions in the axial direction, and the number of the limiting bosses 43 in each row is four. Each of the limiting bosses 43 is provided with two spherical grooves 42 on both sides of the same circumferential position, so that the circumferential section at the same axial position has two limiting bosses 43 arranged at an interval of 180° and four spherical grooves 42 arranged at an interval of 90°.

[0036] Thereby, each of the second wiring harness holders 40 can be inserted into the interior of the outer sleeve 32 by sliding linearly along the axial guide groove 34 of the outer sleeve 32 through the limiting boss 43, and when the limiting boss 43 is aligned with the annular guide groove 35, the limiting boss 43 is slidably embedded in the annular guide groove 35 by rotating the second wiring harness holder 40 relative to the outer sleeve 32, thereby forming a primary fixation between the second wiring harness holder 40 and the first wiring harness holder 30 to prevent the two from axial movement (axial restriction).

[0037] In addition, the second harness fixture 40 can be further adjusted according to the use requirements by adjusting the number of the limiting bosses 43 of the second harness fixture 40 embedded in the annular guide groove 35 to adjust the depth of the second harness fixture 40 immersed in the outer sleeve 32. Figure 5 , showing that the second wiring harness holder 40 has only one set of limiting bosses 43 embedded in the relative position of the annular guide groove 35; the second wiring harness holder 40 can be two, three or four sets of limiting bosses 43 located at different axial positions embedded in the annular guide groove 35.

[0038] According to the above, the wiring harness connector of the present invention is internally provided with an annular equidistant array of annular guide grooves 35 and axial guide grooves 34, which not only enhances the installation stability of the second wiring harness fixture 40, but also supports flexible adjustment of the positioning of the second wiring harness fixture 40 according to different installation requirements, thereby achieving more effective and more precise protection for the cable harness 60, significantly improving the stability and reliability of the wiring harness connector, and meeting the cable harness 60 fixing requirements in different application scenarios.

[0039] In the embodiment of the present invention, the damping strip 70 is formed with a bottom plane 71 and an annular surface 72 opposite to each other, and the bottom plane 71 and the annular surface 72 are connected by two side planes 73 along the length direction (parallel to the axial direction); 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 surface 72 is covered on the surface of the cable bundle 60.

[0040] like Figure 1 , Figure 2 and Figure 5 , Figure 6 As shown, it is explained that the first wire harness fixture 30 and the second wire harness fixture 40 of the present invention form a radially restricted secondary fixing structure through the elastic limiting mechanism 50.

[0041] like Figure 6 As shown, a limiting hole seat 33 is integrally formed at the end of each outer sleeve 32 of the first wiring harness fixture 30, and the limiting hole seat 33 is sequentially arranged along the radial direction to form a large-diameter screw hole 331, a small-diameter through hole 332 and a tapered hole 333 that are interconnected; the bottom of the large-diameter screw hole 331 shrinks to form a shoulder connected to the small-diameter through hole 332, and the bottom of the small-diameter through hole 332 shrinks to form the tapered hole 333, and the tapered hole 333 penetrates the tube wall of the outer sleeve 32.

[0042] 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 in the limiting hole seat 33 of the first harness fixture 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 passed through and limited in the tapered hole 333, the fastening bolt 53 is locked in the large-diameter screw hole 331, the compression spring assembly 52 is accommodated in the small-diameter through hole 332 and the two ends 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 in the tapered hole 333 by compressing the compression spring assembly 52, so that the limiting steel ball 51 is elastically retractable and clamped in the tapered hole 333; Thus, the second harness fixture 40 is rotated relative to the outer sleeve 32 so that the spherical groove 42 is aligned with the tapered hole 333 to form a spherical space, so that the limiting steel ball 51 is protruded and accommodated in the spherical space, forming a limiting structure that limits the rotation of the second harness fixture 40 relative to the outer sleeve 32, and forming a secondary fixation between the first harness fixture 30 and the second harness fixture 40. In addition, through the elastic expansion and contraction ability of the limiting steel ball 51, when a compressive elastic force greater than the compression spring assembly 52 is applied, the limiting steel ball 51 can be contracted, so that the second harness fixture 40 can be rotated relative to the outer sleeve 32 again until the limiting steel ball 51 is aligned with another spherical groove 42.

[0043] In the embodiment of the present invention, in order to ensure the secondary fixing ability of the elastic limiting mechanism 50 between the second wire harness fixer 40 and the outer sleeve 32, the compression spring assembly 52 of the elastic limiting mechanism 50 preferably includes an outer sleeve spring 521 and an embedded spring 522. The embedded spring 522 is inserted into the outer sleeve spring 521 so that the outer sleeve spring 521 can be used to cover the larger area of ​​the limiting steel ball 51, thereby ensuring that the limiting steel ball 51 is not displaced after being compressed due to entering the smaller diameter through hole 332 with a larger aperture. The embedded spring 522 can ensure that a secondary fixing force sufficient to prevent the second wire harness fixer 40 from rotating relative to the outer sleeve 32 is applied.

[0044] According to the above, the two-stage fixing design of the first harness fixture 30 and the second harness fixture 40 combines advanced and efficient mechanical locking principles, showing efficient and reliable characteristics. This design not only achieves a stable connection effect, but also significantly improves the convenience of disassembly operations with the help of simplified operating procedures. Based on the efficient use of space, this design greatly simplifies the disassembly process and provides great convenience for subsequent maintenance and repair work. This innovative two-stage locking design fully demonstrates the significant advantages of the present invention in improving operating efficiency and maintenance convenience.

[0045] like Figure 2Each of the second harness holders 40 has a through hole 41 formed therein. Figure 4 , Figure 5 , the cable harness 60 is inserted and connected to the three-phase socket 21 by penetrating the through hole 41. In the embodiment of the present invention, in order to reduce the damage to the cable harness 60 caused by vibration or impact, and to ensure that the cable harness 60 is more stable and reliable when transmitting power signals, the wiring harness connector of the present invention further provides a long groove 44 along the axial direction on the hole wall of the through hole 41 of the second wiring harness fixture 40, and the long groove 44 is used to install the damping strip 70, so that the cable harness 60 obtains a shock absorbing effect by contacting the damping strip 70.

[0046] In the embodiment of the present invention, the damping strips 70 are preferably arranged in an even number and at equal angles in the circumferential direction. Figure 2 , Figure 4 As shown, each of the second harness holders 40 is preferably provided with four long receiving grooves 44 so that four damping strips 70 are disposed inside each second harness holder 40 , and the damping strips 70 are spaced apart at the same angle in the circumferential direction so as to evenly distribute the force.

[0047] The present invention is described in detail above in conjunction with the accompanying drawings and embodiments. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A wiring harness connector for a drive motor, the drive motor comprising a motor host and a motor controller arranged on the motor host, the motor controller being provided with a three-phase socket, the three-phase socket being fixedly installed with a three-cable wiring harness through the wiring harness connector; characterized in that: The wiring harness connector comprises: The first wire harness holder has three outer sleeves corresponding to the three-phase socket, each of the outer sleeves is provided with at least one axial guide groove and at least one annular guide groove; the annular guide groove is radially recessed and formed 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; The three second harness holders are all formed into round tubular components and are correspondingly inserted into the three outer sleeves of the first harness holder; each of the second harness holders is provided with a through hole, and the cable harness is inserted and connected to the three-phase socket through the through hole; the outer surface of each of the second harness holders is provided with at least one limiting boss, and each of the second harness holders is inserted into the outer sleeve through the limiting boss and linearly slides along the axial guide groove, and the limiting boss is rotated and slidably embedded in the annular guide groove when aligned with the annular guide groove, so that the second harness holder and the first harness holder are fixed to form an axially limited primary fixation; The elastic limiting mechanism is assembled radially between the outer sleeve and the second wire harness fixer which are sleeved with each other to form a secondary fixation with radial elastic limitation.

2. The wiring harness connector for the drive motor according to claim 1, characterized in that: A long groove is axially recessed on the hole wall of the through hole of the second harness fixture, and the long groove is used to install a damping strip; the cable harness is penetrated into the through hole and contacts the damping strip to reduce vibration.

3. The wiring harness connector for the drive motor according to claim 2, characterized in that: Four long containing grooves arranged at equal intervals are concavely arranged on the hole wall of the penetration hole along the axial direction; a damping strip is installed inside each of the long containing grooves.

4. The drive motor harness connector according to claim 2 or 3, characterized in that: The damping strip is formed with a bottom plane and a ring joint surface opposite to each other, and the bottom plane and the ring joint surface are connected by two side planes along the length direction; the damping strip is installed in the long groove, the bottom plane contacts the bottom of the long groove, and the ring joint surface covers the surface of the cable bundle.

5. The wiring harness connector for the drive motor according to claim 1, characterized in that: A limiting hole seat is integrally formed at the end of each outer sleeve of the first harness fixture, and the limiting hole seat is sequentially penetrated in the radial direction to form a large-diameter screw hole, a small-diameter through hole and a tapered hole that are interconnected; the bottom of the large-diameter screw hole shrinks to form a shoulder connected to the small-diameter through hole, and 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; The outer surface of each of the second wiring harness fixtures is provided with a spherical groove at the same annular 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 harness fixture, the limiting steel ball is passed through and limited in the tapered 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 the two ends of the compression spring assembly are respectively pressed against the limiting steel ball and the fastening bolt, so that the limiting steel ball is elastically clamped in the tapered hole; Thereby, the second harness fixture is rotated relative to the outer sleeve to align the spherical groove with the tapered hole to form a spherical space, so that the limiting steel ball protrudes and is accommodated in the spherical space to form a secondary fixation between the first harness fixture and the second harness fixture.

6. The wiring harness connector for the drive motor according to claim 5, characterized in that: Each of the second wire harness holders is provided with four limiting bosses along the axial direction, and the four limiting bosses are independently provided with four spherical grooves at the same annular position thereof.

7. The wiring harness connector for the drive motor according to claim 5, characterized in that: Each of the second wiring harness holders is provided with two rows of limiting bosses at symmetrical positions along the axial direction, each row of limiting bosses has four limiting bosses, and each limiting boss is provided with two spherical grooves on both sides of the same annular position thereof.

8. The wiring harness connector for the drive motor according to claim 5, characterized in that: The compression spring assembly includes an outer sleeve spring and an inner sleeve spring, wherein the inner sleeve spring is inserted into the inner sleeve spring.

9. The wiring harness connector for a drive motor according to claim 1, characterized in that: The bottom of the motor mainframe is provided with fixing plates symmetrically arranged in pairs, and each fixing plate is provided with a mounting hole.

10. The wiring harness connector for the drive motor according to claim 1, characterized in that: The three-phase socket is provided with three plug holes; The three outer sleeves of the first wiring harness fixture are arranged side by side and integrally formed with a mounting plate at the same end; the first wiring harness fixture is locked to the end of the motor controller through the mounting plate, and the interior of each outer sleeve passes through the mounting plate and is connected to each plug hole, so that the cable harness passes through and is connected to the plug hole.

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