Sealing waterproof mechanism at automobile wire harness socket and use method

Abstract

The invention discloses a sealing waterproof mechanism at an automobile wire harness socket and a use method, and relates to the technical field of automobile wire harness sockets. A sealing waterproof mechanism at an automobile wire harness socket comprises a first sealing head and a second sealing head which are respectively sleeved on two wire harnesses, and further comprises a first connecting knob which is sleeved on the first sealing head and a second connecting knob which is sleeved on the second sealing head, and the first connecting knob and the second connecting knob are fixed through threads; the first sealing head and the second sealing head are in threaded connection with limiting plates; a dynamic sealing structure is formed by the first sealing sleeve, the second sealing sleeve and the spring, the sealing sleeves are always tightly attached to the inner wall of the wire harness and the inner wall of the sealing head through the elastic pre-tightening force of the spring, displacement caused by vibration or thermal expansion and cold contraction is automatically compensated, and meanwhile the sealing paste filling cavity is pressed to extrude sealing paste to fill small gaps.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile wiring harness connectors, and in particular relates to a sealing and waterproof mechanism at an automobile wiring harness connector. Background Art

[0002] Sealing and waterproofing technology for automotive wiring harness connectors has always been an important research direction in the field of automotive electronic engineering. As the degree of automotive electrification continues to increase, the number of connectors used has grown exponentially, from hundreds in traditional fuel vehicles to 600-1000 in new energy vehicles. This growth has placed higher demands on the reliability, sealing and durability of connectors.

[0003] At present, the sealing between automobile wiring harness connectors is usually achieved by using elastic materials such as silicone rubber shells and sealing rings. The advantages of this design are simple structure and low cost, but there are obvious disadvantages: on the one hand, the elastic material is prone to permanent deformation after long-term compression, resulting in gradual attenuation of the sealing performance; on the other hand, static sealing is difficult to adapt to the vibration of the vehicle during driving and the relative displacement of the wiring harness, and it is easy to produce sealing gaps. In view of the above problems, a sealing and waterproof mechanism at the automobile wiring harness connector is proposed here. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sealing and waterproof mechanism for an automobile wiring harness connector that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A sealing and waterproof mechanism at a connector of an automobile wiring harness comprises a first sealing head and a second sealing head respectively sleeved on two wiring harnesses, and further comprises: a first connecting knob sleeved on the first sealing head and a second connecting knob sleeved on the second sealing head, the first connecting knob and the second connecting knob being fixed by threads; the first sealing head and the second sealing head are both threadedly connected to a limit plate; a first sealing sleeve and a second sealing sleeve are both provided in the first sealing head and the second sealing head, the first sealing sleeve and the second sealing sleeve are both sleeved on the wiring harness, a spring is provided between the first sealing sleeve and the second sealing sleeve, the two springs drive two groups of first sealing sleeves to respectively contact the first sealing head and the second sealing head, and drive the second sealing sleeve to contact the limit plate.

[0007] As a preferred embodiment of the present invention: a first groove is provided on the first connecting knob, and a sealing plug is provided on the second connecting knob, and the sealing plug is threadably engaged with the first groove.

[0008] As a preferred embodiment of the present invention: a second groove is provided on the sealing plug, and a sealing ring is provided between the first groove and the second groove.

[0009] As a preferred embodiment of the present invention: a first sealing ring is provided between the first connecting knob and the first sealing head, and a second sealing ring is provided between the second connecting knob and the second sealing head.

[0010] As a preferred embodiment of the present invention: a heat conducting block communicating with the inner and outer sides of the first sealing head is fixedly mounted on the first sealing head, and an air inlet pipe is fixedly mounted on the first sealing head.

[0011] As a preferred embodiment of the present invention: a driving handle is fixedly mounted on the limiting plate.

[0012] As a preferred embodiment of the present invention: the first sealing sleeve includes a first top plate and a first conical cylinder fixedly mounted on the first top plate, the second sealing sleeve includes a second top plate and a second conical cylinder fixedly mounted on the second top plate, the spring is sleeved on the wiring harness and the two ends of the spring are fixedly connected to the first top plate and the second top plate respectively.

[0013] As a preferred embodiment of the present invention: the first conical cylinder is provided with a first sealing paste filling cavity, the second conical cylinder is provided with a second sealing paste filling cavity, and both the first conical cylinder and the second conical cylinder are provided with annular notches.

[0014] A method for using a sealing and waterproof mechanism at an automobile wiring harness connector comprises the following steps:

[0015] Step 1: Sleeve the first connecting knob onto the first sealing head, and sleeve the second connecting knob onto the second sealing head to form two independent housing structures;

[0016] Step 2: Tear off the seals from the two sets of dynamic sealing assemblies and insert them into the two wiring harnesses respectively, making sure that the sealing sleeves are coaxial with the wiring harnesses;

[0017] Step 3: Install the limit plate on the wiring harness and use the driving handle to rotate the limit plate to make it threaded and fixed with the sealing head. At this time, the spring is compressed, pushing the sealing sleeve close to the wiring harness and the inner wall of the sealing head to form an initial seal;

[0018] Step 4: Align the connectors of the two wiring harnesses and plug them in to ensure a reliable electrical connection;

[0019] Step 5: Screw the sealing plug into the first groove so that the sealing ring is squeezed between the first groove and the second groove to form an end face seal; at the same time, the first sealing ring and the second sealing ring are compressed to enhance the static sealing effect;

[0020] Step 6: After vacuuming the air inlet pipe, inject inert gas and use the heat conduction block to conduct the internal heat to complete the heat dissipation and anti-oxidation protection;

[0021] Step 7: Confirm that all sealing parts are not loose and the sealing paste is evenly filled; during subsequent maintenance, the driving handle and detachable structure can be used for quick disassembly and maintenance.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0023] 1. The sealing and waterproof mechanism at the automotive wiring harness connector of the present invention comprises a dynamic sealing structure composed of a first sealing sleeve, a second sealing sleeve and a spring. The elastic pre-tightening force of the spring is used to keep the sealing sleeve in close contact with the wiring harness and the inner wall of the sealing head, automatically compensating for displacement caused by vibration or thermal expansion and contraction, while pressurizing the sealing paste filling cavity to squeeze out the sealing paste to fill tiny gaps.

[0024] 2. The sealed waterproof mechanism at the connector of the automobile wiring harness should be used to evacuate the air first, and then inject protective gas into the inside. The protective gas should preferably be an inert gas with good thermal conductivity. The heat generated at the wiring harness connector is then transferred to the outside through the heat conduction block to prevent the temperature inside the waterproof mechanism from being too high.

[0025] 3. The sealing and waterproof mechanism at the automobile wiring harness connector is provided with a dynamic sealing sleeve, a threaded sealing ring, and a static sealing ring in this application. Together with the heat dissipation and gas protection system, the mechanism has the comprehensive advantages of adaptive displacement compensation, anti-vibration loosening, multiple waterproofing, heat dissipation and anti-oxidation, etc. It effectively solves the sealing problem of traditional wiring harness connectors under complex working conditions and significantly improves the reliability and service life in high humidity and strong vibration environments.

[0026] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached figure:

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of a sealing and waterproof mechanism at an automotive wiring harness connector proposed by the present invention;

[0029] Figure 2 This is a three-dimensional cross-sectional view of a sealing and waterproof mechanism at an automobile wiring harness connector proposed by the present invention;

[0030] Figure 3 This is a main cross-sectional view of a sealing and waterproof mechanism at an automotive wiring harness connector proposed by the present invention;

[0031] Figure 4 This is a cross-sectional view of a first connecting knob and a second connecting knob of a sealing and waterproof mechanism at an automotive wiring harness connector proposed by the present invention;

[0032] Figure 5 This is a cross-sectional view of a first sealing sleeve and a second sealing sleeve of a waterproof sealing mechanism at an automotive wiring harness connector proposed by the present invention;

[0033] Figure 6 The present invention proposes a sealing and waterproof mechanism for the automotive wiring harness connector. Figure 5 Schematic diagram of the structure at A in the middle;

[0034] Figure 7 This is a structural schematic diagram of a second sealing sleeve of a sealing and waterproof mechanism at an automotive wiring harness connector proposed by the present invention;

[0035] Figure 8 This is a structural schematic diagram of a first sealing head of a sealing and waterproof mechanism at an automobile wiring harness connector proposed by the present invention.

[0036] In the figure: 1. first sealing head; 11. second sealing head; 13. heat conducting block; 2. first connecting knob; 21. second connecting knob; 23. first groove; 24. sealing plug; 25. second groove; 26. sealing ring; 3. first sealing sleeve; 31. first top plate; 32. first conical cylinder; 33. first sealing paste filling cavity; 4. second sealing sleeve; 41. second top plate; 42. second conical cylinder; 43. second sealing paste filling cavity; 5. spring; 6. limit plate; 61. driving handle; 7. air inlet pipe; 8. first sealing ring; 81. second sealing ring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] Example 1: Reference Figures 1-8 A sealing and waterproof mechanism at the connector of an automobile wiring harness includes a first sealing head 1 and a second sealing head 11 respectively sleeved on the two wiring harnesses, and also includes: a first connecting knob 2 sleeved on the first sealing head 1 and a second connecting knob 21 sleeved on the second sealing head 11, the first connecting knob 2 and the second connecting knob 21 are fixed by threads; the first sealing head 1 and the second sealing head 11 are both threadedly connected to a limiting plate 6; a first sealing sleeve 3 and a second sealing sleeve 4 are both provided in the first sealing head 1 and the second sealing head 11, the first sealing sleeve 3 and the second sealing sleeve 4 are both sleeved on the wiring harness, a spring 5 is provided between the first sealing sleeve 3 and the second sealing sleeve 4, the two springs 5 ​​drive the two groups of first sealing sleeves 3 to respectively contact the first sealing head 1 and the second sealing head 11 and drive the second sealing sleeve 4 to contact the limiting plate 6.

[0039] When in use, first sleeve the first connecting knob 2 on the first sealing head 1, and sleeve the second connecting knob 21 on the second sealing head 11 to form two sets of shells, and then sleeve the two sets of shells on the two car wiring harnesses respectively, and then sleeve the two sets of dynamic sealing components (the dynamic sealing component includes a combination of a first sealing sleeve 3, a spring 5 and a second sealing sleeve 4) on the two car wiring harnesses respectively, and then reserve the distance between the wiring harness and the wiring harness connector, install the two limit plates 6 on the two wiring harnesses, and connect and fix the two limit plates 6 to the first sealing head 1 and the second sealing head 11 respectively, and then pass through. During the process, the spring 5 contracts, and the spring 5 drives the first sealing sleeve 3 and the second sealing sleeve 4 to move, so that the inner and outer sides of one group of first sealing sleeves 3 are respectively in contact and sealed with the first sealing head 1 and the wiring harness, and the other group of first sealing sleeves 3 are respectively in contact and sealed with the second sealing head 11 and the wiring harness. At the same time, the two groups of second sealing sleeves 4 are respectively extended to between the two groups of limit plates 6 and the two wiring harnesses and in contact and sealed, thereby realizing the sealing between the limit plates 6 and the wiring harness, and then the wiring harnesses are respectively connected to the connectors, and then the two connectors are plugged and fixed. After the connectors are plugged and fixed, the first connecting knob 2 and the second connecting knob 21 are fixed.

[0040] In summary, the dynamic sealing structure formed by the first sealing sleeve 3 and the second sealing sleeve 4 in cooperation with the spring 5 can automatically compensate for the displacement caused by the vibration of the wiring harness and improve the sealing effect of the wiring harness connector in a vibration environment.

[0041] Example 2: Reference Figures 1-8 A sealing and waterproof mechanism at the connector of an automobile wiring harness includes a first sealing head 1 and a second sealing head 11 respectively sleeved on the two wiring harnesses, and also includes: a first connecting knob 2 sleeved on the first sealing head 1 and a second connecting knob 21 sleeved on the second sealing head 11, the first connecting knob 2 and the second connecting knob 21 are fixed by threads; the first sealing head 1 and the second sealing head 11 are both threadedly connected to a limiting plate 6; a first sealing sleeve 3 and a second sealing sleeve 4 are both provided in the first sealing head 1 and the second sealing head 11, the first sealing sleeve 3 and the second sealing sleeve 4 are both sleeved on the wiring harness, a spring 5 is provided between the first sealing sleeve 3 and the second sealing sleeve 4, the two springs 5 ​​drive the two groups of first sealing sleeves 3 to respectively contact the first sealing head 1 and the second sealing head 11 and drive the second sealing sleeve 4 to contact the limiting plate 6.

[0042] Reference Figure 3 and Figure 4A first groove 23 is provided on the first connecting knob 2, a sealing plug 24 is provided on the second connecting knob 21, the sealing plug 24 is threadedly engaged with the first groove 23, a second groove 25 is provided on the sealing plug 24, a sealing ring 26 is provided between the first groove 23 and the second groove 25, a first sealing ring 8 is provided between the first connecting knob 2 and the first sealing head 1, and a second sealing ring 81 is provided between the second connecting knob 21 and the second sealing head 11.

[0043] After the wiring harness connector is plugged in, the sealing ring 26 is inserted into the second groove 25, and then the knob of the sealing plug 24 is turned to enter the first groove 23 until the first groove 23 and the second groove 25 both squeeze the sealing ring 26, and the first connecting knob 2 and the first sealing head 1 cooperate with the first sealing ring 8 to achieve extrusion sealing, and the second connecting knob 21 and the second sealing head 11 cooperate with the second sealing ring 81 to achieve extrusion sealing.

[0044] Reference Figure 3 A heat-conducting block 13 is fixedly mounted on the first sealing head 1, connecting the inner and outer sides of the first sealing head 1. An air inlet pipe 7 is fixedly mounted on the first sealing head 1. A control valve is provided on the air inlet pipe 7 to regulate whether the air inlet pipe 7 is ventilated. When in use, air can be evacuated first, and then protective gas is flushed into the interior. The protective gas is preferably an inert gas with good thermal conductivity. The heat generated at the harness connector is then conducted to the outside through the heat-conducting block 13 to prevent the temperature inside the waterproof mechanism from being too high.

[0045] Example 3: Reference Figures 1-8 A sealing and waterproof mechanism at the connector of an automobile wiring harness includes a first sealing head 1 and a second sealing head 11 respectively sleeved on the two wiring harnesses, and also includes: a first connecting knob 2 sleeved on the first sealing head 1 and a second connecting knob 21 sleeved on the second sealing head 11, the first connecting knob 2 and the second connecting knob 21 are fixed by threads; the first sealing head 1 and the second sealing head 11 are both threadedly connected to a limiting plate 6; a first sealing sleeve 3 and a second sealing sleeve 4 are both provided in the first sealing head 1 and the second sealing head 11, the first sealing sleeve 3 and the second sealing sleeve 4 are both sleeved on the wiring harness, a spring 5 is provided between the first sealing sleeve 3 and the second sealing sleeve 4, the two springs 5 ​​drive the two groups of first sealing sleeves 3 to respectively contact the first sealing head 1 and the second sealing head 11 and drive the second sealing sleeve 4 to contact the limiting plate 6.

[0046] Reference Figure 3 and Figure 7 A driving handle 61 is fixedly mounted on the limiting plate 6 , and when in use, the driving handle 61 can be used to drive the limiting plate 6 and the sealing head to rotate and fix.

[0047] Reference Figure 3 、 Figure 5 and Figure 6 The first sealing sleeve 3 includes a first top plate 31 and a first conical cylinder 32 fixedly mounted on the first top plate 31. The second sealing sleeve 4 includes a second top plate 41 and a second conical cylinder 42 fixedly mounted on the second top plate 41. The spring 5 is sleeved on the wiring harness and the two ends of the spring 5 are fixedly connected to the first top plate 31 and the second top plate 41 respectively. A first sealing paste filling cavity 33 is provided on the first conical cylinder 32, and a second sealing paste filling cavity 43 is provided on the second conical cylinder 42. Both the first conical cylinder 32 and the second conical cylinder 42 are provided with annular notches, and a seal is provided at the annular notch to prevent the sealing paste from oxidizing and solidifying. The seal needs to be torn off when in use.

[0048] When the first sealing sleeve 3 and the second sealing sleeve 4 are deformed by thermal expansion and contraction, the spring 5 enables the first sealing sleeve 3 and the second sealing sleeve 4 to maintain the seal between the housing of the sealing mechanism and the wiring harness.

[0049] During installation, the pressure exerted by the spring 5 on the first top plate 31 and the second top plate 41 causes the two groups of top plates to slide. When the two groups of top plates slide, they squeeze the first conical cylinder 32 and the second conical cylinder 42 respectively, thereby causing the first sealing paste filling cavity 33 and the second sealing paste filling cavity 43 to shrink and deform, and then the sealing paste in the filling cavity is pressed out to fill the gap between the sealing sleeve and the wiring harness.

[0050] In summary, the automotive wiring harness connector sealing and waterproofing mechanism achieves excellent sealing performance through the coordinated cooperation of multiple structures. Its core advantages are:

[0051] The dynamic sealing structure consists of a first sealing sleeve 3, a second sealing sleeve 4, and a spring 5. The elastic preload of the spring 5 keeps the sealing sleeve in close contact with the wiring harness and the inner wall of the sealing head, automatically compensating for displacement caused by vibration or thermal expansion and contraction. At the same time, the sealing paste is squeezed out of the filling cavity under pressure to fill the tiny gaps.

[0052] The threaded connection structure achieves end face sealing by the cooperation of the first connection knob 2, the second connection knob 21 and the sealing ring 26 while mechanically fixing the end face and utilizing the extrusion deformation of the sealing ring 26;

[0053] The limit plate 6 and the driving handle 61 facilitate adjustment of the compression amount of the spring 5 and simplify installation;

[0054] The heat dissipation system composed of the heat conducting block 13 and the air inlet pipe 7 dissipates the internal heat and introduces inert gas to prevent oxidation;

[0055] The first sealing ring 8 and the second sealing ring 81 serve as auxiliary static sealing barriers.

[0056] The above structures together constitute a three-layer sealing protection system (dynamic sealing sleeve, threaded sealing ring 26, static sealing ring). Combined with the heat dissipation and gas protection system, the mechanism has comprehensive advantages such as adaptive displacement compensation, anti-vibration loosening, multiple waterproofing, heat dissipation and anti-oxidation. It effectively solves the sealing problem of traditional wiring harness connectors under complex working conditions, and significantly improves the reliability and service life in high humidity and strong vibration environments. At the same time, the detachable threaded structure and drive handle 61 design make maintenance more convenient.

[0057] Example 4: A method for using a sealing and waterproof mechanism at an automotive wiring harness connector, comprising the following steps:

[0058] Step 1: Socket the first connecting knob 2 onto the first sealing head 1, and socket the second connecting knob 21 onto the second sealing head 11, forming two independent housing structures;

[0059] Step 2: Tear off the seals in the two sets of dynamic sealing components (including the first sealing sleeve 3, spring 5 and the second sealing sleeve 4) and insert them into the two wiring harnesses respectively, ensuring that the sealing sleeves and the wiring harnesses remain coaxial;

[0060] Step 3: Install the limit plate 6 on the wiring harness, and rotate the limit plate 6 by driving the handle 61 to make it threadedly connected to the sealing head. At this time, the spring 5 is compressed, pushing the sealing sleeve to fit tightly against the wiring harness and the inner wall of the sealing head, forming an initial seal;

[0061] Step 4: Align the connectors of the two wiring harnesses and plug them in to ensure a reliable electrical connection;

[0062] Step 5: Screw the sealing plug 24 into the first groove 23 so that the sealing ring 26 is squeezed between the first groove 23 and the second groove 25 to form an end face seal; at the same time, the first sealing ring 8 and the second sealing ring 81 are compressed to enhance the static sealing effect;

[0063] Step 6: After vacuuming, inert gas is injected through the air inlet pipe 7, and the internal heat is dissipated by the heat conductive block 13 to complete the heat dissipation and anti-oxidation protection;

[0064] Step 7: Confirm that all sealing parts are not loose and the sealing paste is evenly filled; during subsequent maintenance, the driving handle 61 and the detachable structure can be used for quick disassembly and repair.

[0065] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A sealing and waterproof mechanism for a car wiring harness connector, comprising a first sealing head (1) and a second sealing head (11) respectively sleeved on two wiring harnesses, characterized in that: Also includes: A first connecting knob (2) sleeved on the first sealing head (1) and a second connecting knob (21) sleeved on the second sealing head (11), wherein the first connecting knob (2) and the second connecting knob (21) are fixed via threads; The first sealing head (1) and the second sealing head (11) are both threadedly connected to a limit plate (6); A first sealing sleeve (3) and a second sealing sleeve (4) are both provided in the first sealing head (1) and the second sealing head (11); the first sealing sleeve (3) and the second sealing sleeve (4) are both sleeved on the wiring harness; a spring (5) is provided between the first sealing sleeve (3) and the second sealing sleeve (4); the two springs (5) drive the two groups of first sealing sleeves (3) to contact the first sealing head (1) and the second sealing head (11) respectively, and drive the second sealing sleeve (4) to contact the limit plate (6).

2. A sealing and waterproof mechanism for automobile wiring harness connector according to claim 1, characterized in that: The first connecting knob (2) is provided with a first groove (23), and the second connecting knob (21) is provided with a sealing plug (24), and the sealing plug (24) is threadedly engaged with the first groove (23).

3. A sealing and waterproof mechanism for automobile wiring harness connector according to claim 2, characterized in that: A second groove (25) is provided on the sealing plug (24), and a sealing ring (26) is provided between the first groove (23) and the second groove (25).

4. A sealing and waterproof mechanism for automobile wiring harness connector according to claim 3, characterized in that: A first sealing ring (8) is provided between the first connecting knob (2) and the first sealing head (1), and a second sealing ring (81) is provided between the second connecting knob (21) and the second sealing head (11).

5. A sealing and waterproof mechanism for automobile wiring harness connector according to claim 4, characterized in that: A heat conducting block (13) communicating with the inner and outer sides of the first sealing head (1) is fixedly mounted on the first sealing head (1), and an air inlet pipe (7) is fixedly mounted on the first sealing head (1).

6. A sealing and waterproof mechanism for automobile wiring harness connector according to claim 5, characterized in that: A driving handle (61) is fixedly mounted on the limiting plate (6).

7. The sealing and waterproof mechanism for automobile wiring harness connector according to claim 1, characterized in that: The first sealing sleeve (3) comprises a first top plate (31) and a first conical cylinder (32) fixedly mounted on the first top plate (31); the second sealing sleeve (4) comprises a second top plate (41) and a second conical cylinder (42) fixedly mounted on the second top plate (41).

8. The sealing and waterproof mechanism for automobile wiring harness connector according to claim 7, characterized in that: The spring (5) is sleeved on the wiring harness, and both ends of the spring (5) are fixedly connected to the first top plate (31) and the second top plate (41), respectively.

9. The sealing and waterproof mechanism for automobile wiring harness connector according to claim 8, characterized in that: The first conical cylinder (32) is provided with a first sealing paste filling cavity (33), the second conical cylinder (42) is provided with a second sealing paste filling cavity (43), and both the first conical cylinder (32) and the second conical cylinder (42) are provided with an annular notch.

10. A method for using a sealing and waterproof mechanism for an automobile wiring harness connector, comprising the sealing and waterproof mechanism for an automobile wiring harness connector according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Sleeve the first connecting knob (2) onto the first sealing head (1), and sleeve the second connecting knob (21) onto the second sealing head (11), to form two independent housing structures; Step 2: Tear off the seals from the two sets of dynamic sealing assemblies and insert them into the two wiring harnesses respectively, making sure that the sealing sleeves are coaxial with the wiring harnesses; Step 3: Install the limit plate (6) on the wiring harness, and rotate the limit plate (6) by driving the handle (61) to make it threadedly connected and fixed with the sealing head. At this time, the spring (5) is compressed, pushing the sealing sleeve to fit tightly against the wiring harness and the inner wall of the sealing head, forming an initial seal; Step 4: Align the connectors of the two wiring harnesses and plug them in to ensure a reliable electrical connection; Step 5: Screw the sealing plug (24) into the first groove (23) so that the sealing ring (26) is squeezed between the first groove (23) and the second groove (25) to form an end face seal; at the same time, the first sealing ring (8) and the second sealing ring (81) are compressed to enhance the static sealing effect; Step 6: After vacuuming, inert gas is injected through the air inlet pipe (7), and the internal heat is conducted away by the heat conducting block (13), thereby completing heat dissipation and anti-oxidation protection; Step 7: Confirm that each sealing part is not loose and the sealing paste is evenly filled; during subsequent maintenance, the driving handle (61) and the detachable structure can be quickly disassembled and repaired.

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