Low-voltage wire harness connector resistant to high-pressure injection

Abstract

The utility model relates to the technical field of wire harness connectors, in particular to a high-pressure jet resistant low-voltage wire harness connector which comprises a connector body, a mounting lug is fixedly arranged on the connector body, a mounting hole is formed in the mounting lug, a mounting bolt is arranged in the mounting hole, a mounting nut is in threaded connection with the mounting bolt, and the mounting nut is in threaded connection with the connector body. The top of the installation nut is used for abutting against the bottom of the installation lug, the connector body is sleeved with a fastening expansion sleeve, the outer ring wall of the fastening expansion sleeve is used for abutting against a machine shell through hole, an extrusion ring is arranged between the inner ring wall of the fastening expansion sleeve and the outer wall of the connector body in a sliding mode, and the outer ring wall of the extrusion ring is used for abutting against the inner ring wall of the fastening expansion sleeve. A locking assembly is arranged between the extrusion ring and the connector body and used for fixing the connector body and the extrusion ring. According to the invention, the case of sealing failure between the casing and the joint body is reduced, and the sealing performance between the casing and the joint body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wiring harness connector, especially to a high pressure spray resistant low pressure wiring harness connector. BACKGROUND

[0002] The low voltage connector is a device for connecting the wiring harness and the wiring harness, the wiring harness and the electrical components, which is widely used in the automobile circuit and plays an important role in the whole vehicle signal and current transmission.

[0003] The related technology designs a single-side fixed low-voltage wiring harness connector leak-proof connection structure with the authorization announcement number CN217848461U, which includes a connector body, the connector body is used for being arranged in the through hole of the shell, a sealing ring is arranged on the connector body, and the sealing ring is used for being tightly sealed between the connector body and the inner wall of the through hole, a flange is arranged on the outer wall of the connector body, the flange is used for abutting on the outer wall of the shell, an installation ear is arranged on one side of the flange, an installation hole is arranged on the installation ear, the installation hole corresponds to the screw hole arranged on the outer wall of the shell, a buckle is further arranged on the outer wall of the connector body, the buckle corresponds to the clamping groove arranged on the inner wall of the through hole, and the buckle and the installation hole are respectively arranged on the opposite sides of the connector body. During installation, the screw is arranged in the installation hole and is threadedly connected to the screw hole, the buckle is clamped in the clamping groove, one side of the connector body is fixed to the shell through the screw, the other side of the connector body is fixed to the shell through the buckle and the clamping groove, the connector body is symmetrically fixed under the condition that the installation space on one side is limited, the situation that the connector body is warped on one side to cause the sealing failure of the sealing ring is prevented, and the sealing property between the shell and the connector body is improved.

[0004] During the implementation of the present application, the inventors found that at least the following problems exist in the prior art: In order to achieve symmetric fixation of the connector body under the condition that the installation space on one side is limited, a clamping groove matched with the buckle needs to be arranged in the through hole of the shell, but the internal space of the through hole is narrow, and it is difficult to process the clamping groove in the through hole, which may cause misalignment and size mismatch of the clamping groove, so that the connector body cannot be symmetrically fixed, and the connector body is warped on one side to cause the sealing failure of the sealing ring. UTILITY MODEL CONTENTS

[0005] In order to reduce the sealing failure between the shell and the connector body and improve the sealing property between the shell and the connector body, the present application provides a high pressure spray resistant low pressure wiring harness connector.

[0006] The high pressure spray resistant low pressure wiring harness connector provided by the present application adopts the following technical scheme:

[0007] The utility model provides a low pressure wire harness connector of high pressure jet resistance, including the joint body, the mounting lug is fixedly arranged on the joint body, the mounting hole is opened on the mounting lug, the mounting bolt is arranged in the mounting hole, the mounting nut is threadedly connected on the mounting bolt, the top of mounting nut is used for abutting with the bottom of mounting lug, the fastening expansion sleeve is sleeved on the joint body, the outer ring wall of fastening expansion sleeve is used for abutting with the through -hole of shell, the extrusion ring is slidably arranged between the inner ring wall of fastening expansion sleeve and the outer wall of joint body, the outer ring wall of extrusion ring is used for abutting with the inner ring wall of fastening expansion sleeve, the locking assembly is arranged between the extrusion ring and joint body, and the joint body is fixed with the extrusion ring.

[0008] By adopting the above technical scheme, when assembling the joint body and the shell, first, the joint body is inserted into the through hole of the shell, the mounting bolt is threaded into the mounting hole and the bolt hole on the shell, so that the joint body is not easy to rotate relative to the through hole, at this time, the fastening expansion sleeve is sleeved on the joint body, and the fastening expansion sleeve is located between the inner wall of the through hole and the outer wall of the joint body, then the extrusion ring is moved, so that the extrusion ring moves to the gap between the joint body and the fastening expansion sleeve, at this time, the outer ring wall of the fastening expansion sleeve approaches the inner wall of the through hole, when the outer ring wall of the fastening expansion sleeve abuts on the inner wall of the through hole, the joint body and the extrusion ring are fixed by using the locking assembly, at this time, the outer ring wall of the fastening expansion sleeve abuts with the through hole of the shell, and the inner ring wall of the fastening expansion sleeve abuts with the outer ring wall of the extrusion ring, then the mounting nut is rotated, so that the top of the mounting nut abuts with the bottom of the mounting lug, so that the joint body is not easy to move relative to the through hole, thereby fixing the joint body and the shell, when the fastening expansion sleeve is expanded between the joint body and the through hole, on the one hand, the fastening expansion sleeve seals the gap between the joint body and the through hole, on the other hand, the fastening expansion sleeve increases the friction between the joint body and the through hole, so that the joint body is not easy to shake in the through hole, reducing the sealing failure between the shell and the joint body, and improving the sealing performance between the shell and the joint body.

[0009] As preferred, the fastening ring seat is fixedly arranged on the top of the fastening expansion sleeve, the fastening hole is opened on the fastening ring seat, the mounting bolt is inserted into the fastening hole, the fastening nut is threadedly connected on the mounting bolt, and the bottom of the fastening nut is used for abutting with the top of the fastening ring seat.

[0010] By adopting the above technical scheme, when the joint body is inserted into the through hole of the shell, the fastening ring seat is overlapped on the shell, so that the fastening expansion sleeve is sleeved on the joint body, and the fastening expansion sleeve is located between the inner wall of the through hole and the outer wall of the joint body, then the fastening hole on the fastening ring seat, the mounting hole on the mounting lug and the through hole on the shell are relatively arranged, when the mounting bolt is threaded through the mounting hole and the fastening hole, the mounting bolt is threadedly connected with the bolt hole on the shell, then the fastening nut is rotated, so that the bottom of the fastening nut abuts with the top of the fastening ring seat, thereby mounting the fastening expansion sleeve and the joint body on the shell.

[0011] As preferred, the locking assembly comprises a threaded sleeve, an extrusion nut and a locking ring seat, the threaded sleeve is sleeved on the joint body, the threaded sleeve is fixedly connected with the joint body, the extrusion nut is sleeved on the threaded sleeve, the extrusion nut is threadedly connected with the threaded sleeve, the locking ring seat is sleeved on the joint body and the threaded sleeve, the top of the locking ring seat is rotatably connected with the bottom of the extrusion nut, and the bottom of the locking ring seat is rotatably connected with the top of the extrusion ring.

[0012] By adopting the above technical scheme, the extrusion ring is threadedly connected on the joint body through the threaded sleeve, the extrusion nut and the locking ring seat, when the extrusion nut is rotated, the extrusion nut moves along the threaded sleeve, so that the extrusion thread drives the locking ring seat to move along the joint body, and the locking ring seat drives the extrusion ring to move between the fastening expansion sleeve and the joint body.

[0013] As preferred, the locking assembly further comprises a locking lug, an upper nut and a lower nut, the locking lug is fixedly connected with the locking ring seat, a locking hole is formed in the locking lug, the mounting bolt is inserted into the locking hole, the upper nut and the lower nut are both threadedly connected with the mounting bolt, the bottom of the upper nut is used for abutting against the top of the locking lug, and the top of the lower nut is used for abutting against the bottom of the locking lug.

[0014] By adopting the above technical scheme, when the extrusion ring is driven to move, the upper nut and the lower nut are rotated, so that the upper nut and the lower nut are separated from the locking lug, when the locking ring seat moves along the joint body, the locking ring seat drives the locking lug to move along the mounting bolt, after the extrusion ring moves to a proper position, the upper nut and the lower nut are rotated, so that the upper nut and the lower nut abut on the locking lug, and the locking lug is fixed with the mounting bolt, at this time, the locking ring seat is not easy to move along the joint body, and the locking ring seat is not easy to drive the extrusion ring to move, so that the effect of locking the extrusion ring and the joint body is achieved.

[0015] As preferred, a sealing sleeve is sleeved on the outer wall of the joint body, the sealing sleeve is fixedly connected with the joint body, the sealing sleeve is located below the threaded sleeve, and the outer annular wall of the sealing sleeve is attached to the inner annular wall of the extrusion ring.

[0016] By adopting the above technical scheme, the sealing sleeve is attached between the joint body and the extrusion ring, so that the sealing property between the joint body and the extrusion ring is improved.

[0017] As preferred, a deformation cavity is formed in the fastening expansion sleeve, and the deformation cavity is filled with hydraulic medium.

[0018] By adopting the above technical scheme, the deformation cavity deforms along with the extrusion of the extrusion ring, so that the fastening expansion sleeve abuts between the outer wall of the extrusion ring and the inner wall of the through hole.

[0019] Preferably, the outer ring wall of the extrusion ring is provided with an outer extrusion surface for abutting against the inner ring wall of the fastening sleeve.

[0020] By using the above technical solution, the outer extrusion surface facilitates the insertion of the extrusion ring between the fastening sleeve and the joint body.

[0021] Preferably, the inner ring wall of the fastening sleeve is provided with an inner extrusion surface for abutting against the outer ring wall of the extrusion ring.

[0022] By using the above technical solution, the inner extrusion surface facilitates the insertion of the extrusion ring between the fastening sleeve and the joint body.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By providing the joint body, the mounting ear, the mounting hole, the mounting bolt, the mounting nut, the fastening sleeve, the extrusion ring and the locking assembly, the sealing failure between the casing and the joint body is reduced, and the sealing performance between the casing and the joint body is improved.

[0025] 2. By providing the threaded sleeve, the extrusion nut and the locking ring seat, the extrusion ring is moved between the fastening sleeve and the joint body.

[0026] 3. By providing the locking ear, the upper nut, the lower nut and the locking hole, the extrusion ring and the joint body are locked. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of a low-voltage wire harness connector structure resistant to high-pressure injection in an embodiment of the present application.

[0028] Figure 2 is a sectional view showing the positional relationship between the fastening sleeve and the fastening ring seat in an embodiment of the present application.

[0029] Figure 3 is a sectional view showing the connection relationship between the extrusion ring and the mounting ear in an embodiment of the present application.

[0030] Figure 4 is Figure 3 is an enlarged view of part A in

[0031] BRIEF DESCRIPTION OF DRAWINGS 1. joint body; 2. mounting bolt; 21. mounting ear; 22. mounting hole; 23. mounting nut; 3. fastening sleeve; 31. deformation cavity; 32. inner extrusion surface; 4. extrusion ring; 41. outer extrusion surface; 5. locking assembly; 51. threaded sleeve; 52. extrusion nut; 53. locking ring seat; 54. locking ear; 541. locking hole; 55. upper nut; 56. lower nut; 6. fastening ring seat; 61. fastening hole; 62. fastening nut; 7. sealing sleeve. DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the accompanying drawings Figures 1-4 The application will be further described below in conjunction with the accompanying drawings

[0033] The application discloses a high-pressure-resistant jet low-voltage wire harness connector. Referring to Figures 1 to 4 , including the joint body 1, the mounting ear 21 is installed on the joint body 1, the mounting hole 22 is opened on the mounting ear 21, and the mounting bolt 2 is inserted in the mounting hole 22. The mounting nut 23 is threadedly connected on the mounting bolt 2, and the top of the mounting nut 23 is used for abutting against the bottom of the mounting ear 21. The fastening expansion sleeve 3 is sleeved on the joint body 1, the outer ring wall of the fastening expansion sleeve 3 is used for abutting against the through hole of the shell, the extrusion ring 4 is slidingly arranged between the inner ring wall of the fastening expansion sleeve 3 and the outer wall of the joint body 1, and the outer ring wall of the extrusion ring 4 is used for abutting against the inner ring wall of the fastening expansion sleeve 3. The locking assembly 5 is arranged between the extrusion ring 4 and the joint body 1, and the locking assembly 5 is used for fixing the joint body 1 and the extrusion ring 4. When the joint body 1 and the shell are assembled, first, the joint body 1 is inserted into the through hole of the shell, the mounting bolt 2 is threaded into the mounting hole 22 and is threadedly connected with the bolt hole on the shell, so that the joint body 1 is not easy to rotate relative to the through hole. At this time, the fastening expansion sleeve 3 is sleeved on the joint body 1, and the fastening expansion sleeve 3 is located between the inner wall of the through hole and the outer wall of the joint body 1. Then the extrusion ring 4 is moved, so that the extrusion ring 4 moves to the gap between the joint body 1 and the fastening expansion sleeve 3, at this time, the outer ring wall of the fastening expansion sleeve 3 is close to the inner wall of the through hole. When the outer ring wall of the fastening expansion sleeve 3 abuts on the inner wall of the through hole, the locking assembly 5 is used to fix the joint body 1 and the extrusion ring 4, at this time, the outer ring wall of the fastening expansion sleeve 3 abuts against the through hole of the shell, and the inner ring wall of the fastening expansion sleeve 3 abuts against the outer ring wall of the extrusion ring 4. Finally, the mounting nut 23 is rotated, so that the top of the mounting nut 23 abuts against the bottom of the mounting ear 21, so that the joint body 1 is not easy to move relative to the through hole, thereby fixing the joint body 1 and the shell. When the fastening expansion sleeve 3 is expanded between the joint body 1 and the through hole, on the one hand, the fastening expansion sleeve 3 seals the gap between the joint body 1 and the through hole, and on the other hand, the fastening expansion sleeve 3 increases the friction between the joint body 1 and the through hole, so that the joint body 1 is not easy to shake in the through hole. The sealing failure between the shell and the joint body 1 is reduced, and the sealing performance between the shell and the joint body 1 is improved.

[0034] In order to install the fastening expansion sleeve 3 and the joint body 1 on the shell, referring to Figure 1 and Figure 2The fastening ring seat 6 is arranged on the top of the fastening sleeve 3, the fastening hole 61 is arranged on the fastening ring seat 6, and the mounting bolt 2 is inserted into the fastening hole 61. The fastening nut 62 is screwed on the mounting bolt 2, and the bottom of the fastening nut 62 is used to abut against the top of the fastening ring seat 6. When the joint body 1 is inserted into the through hole of the shell, the fastening ring seat 6 is overlapped on the shell, the fastening sleeve 3 is sleeved on the joint body 1, and the fastening sleeve 3 is located between the inner wall of the through hole and the outer wall of the joint body 1. Then, the fastening hole 61 on the fastening ring seat 6, the mounting hole 22 on the mounting lug 21 and the through hole on the shell are arranged oppositely. When the mounting bolt 2 penetrates through the mounting hole 22 and the fastening hole 61, the mounting bolt 2 is screwed with the bolt hole on the shell, and then the fastening nut 62 is rotated to abut the bottom of the fastening nut 62 against the top of the fastening ring seat 6, so as to mount the fastening sleeve 3 and the joint body 1 on the shell.

[0035] In order to move the extrusion ring 4 between the fastening sleeve 3 and the joint body 1, referring to Figures 1 to 4 The locking assembly 5 comprises a threaded sleeve 51, an extrusion nut 52, a locking ring seat 53, a locking lug 54, an upper nut 55 and a lower nut 56. The threaded sleeve 51 is sleeved on the joint body 1, and the threaded sleeve 51 is welded with the joint body 1. The extrusion nut 52 is sleeved on the threaded sleeve 51, and the extrusion nut 52 is screwed with the threaded sleeve 51. The locking ring seat 53 is sleeved on the joint body 1 and the threaded sleeve 51, the top of the locking ring seat 53 is rotatably connected with the bottom of the extrusion nut 52, and the bottom of the locking ring seat 53 is rotatably connected with the top of the extrusion ring 4. The extrusion ring 4 is screwed on the joint body 1 through the threaded sleeve 51, the extrusion nut 52 and the locking ring seat 53. The locking lug 54 is arranged on one side of the locking ring seat 53, and the locking hole 541 is arranged on the locking lug 54. The mounting bolt 2 is inserted into the locking hole 541, and the upper nut 55 and the lower nut 56 are screwed with the mounting bolt 2. The bottom of the upper nut 55 is used to abut against the top of the locking lug 54, and the top of the lower nut 56 is used to abut against the bottom of the locking lug 54. When the extrusion ring 4 is driven to move, the upper nut 55 and the lower nut 56 are separated from the locking lug 54 by rotating the upper nut 55 and the lower nut 56. Then the extrusion nut 52 is rotated to move along the threaded sleeve 51, so that the extrusion thread drives the locking ring seat 53 to move along the joint body 1, and the locking ring seat 53 drives the extrusion ring 4 to move between the fastening sleeve 3 and the joint body 1. When the locking ring seat 53 moves along the joint body 1, the locking ring seat 53 drives the locking lug 54 to move along the mounting bolt 2. When the extrusion ring 4 moves to the appropriate position, the upper nut 55 and the lower nut 56 are abutted on the locking lug 54 by rotating the upper nut 55 and the lower nut 56, so as to fix the locking lug 54 and the mounting bolt 2. At this time, the locking ring seat 53 is not easy to move along the joint body 1, and then the locking ring seat 53 is not easy to drive the extrusion ring 4 to move, so as to achieve the effect of locking the extrusion ring 4 and the joint body 1.

[0036] In order to improve the sealing between the joint body 1 and the extrusion ring 4, referring to Figure 1 , the sealing sleeve 7 is sleeved on the outer wall of the joint body 1, and the sealing sleeve 7 is fixedly connected with the joint body 1. The sealing sleeve 7 is located below the threaded sleeve 51, and the sealing sleeve 7 and the joint body 1 are mutually attached. The outer ring wall of the sealing sleeve 7 is attached to the inner ring wall of the extrusion ring 4.

[0037] In order to facilitate the extrusion of the extrusion ring 4 to deform the fastening sleeve 3, referring to Figures 1 to 3 , the deforming cavity 31 is arranged in the fastening sleeve 3, and the deforming cavity 31 is filled with hydraulic medium. The deforming cavity 31 deforms following the extrusion of the extrusion ring 4, so that the fastening sleeve 3 is abutted between the outer wall of the extrusion ring 4 and the inner wall of the through hole. The outer extrusion surface 41 is arranged on the outer ring wall of the extrusion ring 4, and the outer extrusion surface 41 is used to abut against the inner ring wall of the fastening sleeve 3. The inner extrusion surface 32 is arranged on the inner ring wall of the fastening sleeve 3, and the inner extrusion surface 32 is used to abut against the outer ring wall of the extrusion ring 4. The outer extrusion surface 41 and the inner extrusion surface 32 facilitate the insertion of the extrusion ring 4 between the fastening sleeve 3 and the joint body 1.

[0038] The implementation principle of the high-pressure-resistant and high-pressure-resistant low-voltage wire harness connector is as follows: when the joint body 1 is installed in the through hole of the shell, the fastening ring seat 6 is overlapped on the shell, the fastening sleeve 3 is located in the through hole, and then the joint body 1 is inserted into the fastening sleeve 3. Then the mounting bolt 2 is sequentially penetrated through the mounting hole 22, the locking hole 541 and the fastening hole 61, and finally the mounting bolt 2 is threadedly connected with the threaded hole on the shell. At this time, the joint body 1, the locking ring seat 53 and the fastening ring seat 6 are not easy to rotate relative to the shell. Then the extrusion nut 52 is rotated, the extrusion nut 52 drives the locking ring seat 53 and the extrusion ring 4 to move along the joint body 1, so that the extrusion ring 4 is gradually extruded between the fastening sleeve 3 and the sealing sleeve 7. When the outer ring wall of the fastening sleeve 3 abuts against the inner wall of the through hole, the mounting nut 23 is rotated, so that the top of the mounting nut 23 abuts against the bottom of the mounting ear 21. The fastening nut 62 is rotated, so that the bottom of the fastening nut 62 abuts against the top of the fastening ring seat 6. The upper nut 55 and the lower nut 56 are rotated to abut against the locking ear 54, so as to fix the joint body 1, the extrusion ring 4 and the fastening sleeve 3 on the shell. When the fastening sleeve 3 is expanded between the joint body 1 and the through hole, on the one hand, the fastening sleeve 3 seals the gap between the joint body 1 and the through hole, and on the other hand, the fastening sleeve 3 increases the friction between the joint body 1 and the through hole, so that the joint body 1 is not easy to shake in the through hole. The sealing failure between the shell and the joint body 1 is reduced, and the sealing between the shell and the joint body 1 is improved.

[0039] The above are the preferred embodiments of the present application, but not limited to the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A low-voltage wire harness connector resistant to high-pressure jetting, comprising a connector body (1), wherein a mounting ear (21) is fixedly disposed on the connector body (1), a mounting hole (22) is formed in the mounting ear (21), and a mounting bolt (2) is disposed in the mounting hole (22), characterized in that: The mounting bolt (2) is threaded with a mounting nut (23). The top of the mounting nut (23) is used to abut against the bottom of the mounting ear (21). A fastening expansion sleeve (3) is fitted on the connector body (1). The outer ring wall of the fastening expansion sleeve (3) is used to abut against the through hole of the housing. A compression ring (4) is slidably arranged between the inner ring wall of the fastening expansion sleeve (3) and the outer wall of the connector body (1). The outer ring wall of the compression ring (4) is used to abut against the inner ring wall of the fastening expansion sleeve (3). A locking component (5) is arranged between the compression ring (4) and the connector body (1). The locking component (5) is used to fix the connector body (1) and the compression ring (4).

2. The low-voltage wire harness connector resistant to high-pressure jetting according to claim 1, characterized in that: The top of the fastening expansion sleeve (3) is fixedly provided with a fastening ring seat (6), and a fastening hole (61) is opened on the fastening ring seat (6). The fastening hole (61) is for the installation bolt (2) to be inserted. The installation bolt (2) is threadedly connected with a fastening nut (62), and the bottom of the fastening nut (62) is used to abut against the top of the fastening ring seat (6).

3. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 1, characterized in that: The locking assembly (5) includes a threaded sleeve (51), a compression nut (52), and a locking ring seat (53). The threaded sleeve (51) is fitted onto the connector body (1) and is fixedly connected to the connector body (1). The compression nut (52) is fitted onto the threaded sleeve (51) and is threadedly connected to the threaded sleeve (51). The locking ring seat (53) is fitted onto the connector body (1) and the threaded sleeve (51). The top of the locking ring seat (53) is rotatably connected to the bottom of the compression nut (52), and the bottom of the locking ring seat (53) is rotatably connected to the top of the compression ring (4).

4. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 3, characterized in that: The locking assembly (5) further includes a locking lug (54), an upper nut (55), and a lower nut (56). The locking lug (54) is fixedly connected to the locking ring seat (53). A locking hole (541) is provided on the locking lug (54). The mounting bolt (2) is inserted into the locking hole (541). The upper nut (55) and the lower nut (56) are both threadedly connected to the mounting bolt (2). The bottom of the upper nut (55) is used to abut against the top of the locking lug (54), and the top of the lower nut (56) is used to abut against the bottom of the locking lug (54).

5. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 3, characterized in that: A sealing sleeve (7) is fitted on the outer wall of the connector body (1). The sealing sleeve (7) is fixedly connected to the connector body (1). The sealing sleeve (7) is located below the threaded sleeve (51). The outer ring wall of the sealing sleeve (7) is in contact with the inner ring wall of the extrusion ring (4).

6. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 1, characterized in that: The fastening expansion sleeve (3) has a deformation cavity (31) inside, and the deformation cavity (31) is filled with hydraulic medium.

7. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 1, characterized in that: The outer ring wall of the extrusion ring (4) has an outer extrusion surface (41), which is used to abut against the inner ring wall of the fastening expansion sleeve (3).

8. A low-voltage wire harness connector resistant to high-pressure jetting according to claim 1, characterized in that: The inner ring wall of the fastening expansion sleeve (3) has an inner extrusion surface (32), which is used to abut against the outer ring wall of the extrusion ring (4).

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