A through-hole connector and its mounting structure

Abstract

The present application relates to the field of connectors, and in particular to a through-hole connector and its mounting structure, which includes a connector body, a shielding ring and an elastic sleeve, wherein the connector body is provided with a connecting through-hole, the shielding ring is provided with a ring body through-hole, and the ring body through-hole is used to crimp the shielding ring on the wiring harness; the elastic sleeve and the shielding ring are both made of metal, the elastic sleeve is provided with a sleeve through-hole, and the sleeve through-hole is used to crimp the elastic sleeve on the shielding ring, the elastic sleeve is elastic, and the elastic sleeve has an abutment portion, the cross section of the abutment portion is circular, and when the through-hole connector is installed with the wiring harness, the abutment portion is tightly fitted to the inner wall of the connecting through-hole. The present application has the effect of facilitating the installation and debugging of the wiring harness installed on the through-hole connector.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a via connector and a mounting structure thereof. Background Art

[0002] A through-hole connector is a connection device commonly used in automotive electrical systems, and is used to electrically connect two electrical devices through a wiring harness with terminals connected to the ends. In the existing related technology, the through-hole connector includes a connection body and a shielding ring, and a connection through-hole is opened inside the connection body. When using a through-hole connector, it is first necessary to sleeve and crimp the shielding ring on the wiring harness, then pass the wiring harness and the shielding ring through the connection through-hole, and finally inject plastic sealant into the connection through-hole, and use a plastic sealing process to fix the shielding ring and the wiring harness in the connection through-hole, so that the wiring harness is not easily moved by force, and the reliability is good.

[0003] Regarding the above-mentioned related technologies, although the wiring harness is fixed to the via connector through the plastic packaging process to ensure that the wiring harness is not easily moved by force, it makes it difficult to fine-tune the angle and length of the terminal at the end of the wiring harness, which is not convenient for subsequent installation and debugging of the wiring harness. Summary of the invention

[0004] In order to facilitate installation and debugging of a wiring harness installed in a via connector, the present application provides a via connector and a mounting structure thereof.

[0005] The via connector provided in this application adopts the following technical solution:

[0006] A through-hole connector comprises a connector body, a shielding ring and an elastic sleeve, wherein the connector body is provided with a connecting through-hole, the shielding ring is provided with a ring body through-hole, and the ring body through-hole is used to crimp the shielding ring onto a wiring harness; the shielding ring and the elastic sleeve are both made of metal, the elastic sleeve is provided with a sleeve through-hole, and the sleeve through-hole is used to crimp the elastic sleeve onto the shielding ring, the elastic sleeve is elastic, and the elastic sleeve has an abutment portion, the cross-section of the abutment portion is circular, and when the through-hole connector is installed with a wiring harness, the abutment portion is tightly fitted against the inner wall of the connecting through-hole.

[0007] By adopting the above technical solution, when the wire harness is installed on the through-hole connector, the shielding ring is first crimped and sleeved on the wire harness, and then the shielding ring and the wire harness are inserted into the sleeve through-hole together, so that the inner wall of the sleeve through-hole is tightly fitted to the outer peripheral surface of the shielding ring, and then the elastic sleeve, the shielding ring and the wire harness are pressed into the connecting through-hole together, so that the elastic sleeve is tightly fitted to the inner wall of the sleeve through-hole, so that the wire harness is stably fixed on the through-hole connector. When the wire harness needs to be installed and debugged later, the elastic sleeve can be pulled or pushed by the wire harness so that the length of the terminal at the end of the wire harness can be fine-tuned as needed, or the elastic sleeve can be rotated by the wire harness so that the angle of the terminal at the end of the wire harness can be fine-tuned as needed, thereby facilitating the operator to install and debug the wire harness installed on the through-hole connector.

[0008] Optionally, the abutting portion is provided with a crimping bevel, and the crimping bevel increases the outer diameter of the elastic sleeve along the axial direction.

[0009] By adopting the above technical solution, the crimping bevel makes it easier for the elastic sleeve to be pressed into the connecting through-hole, thereby reducing the difficulty of assembling the elastic sleeve.

[0010] Optionally, an inner wall of the sleeve perforation is provided with an insertion bevel, the insertion bevel is located at the opening of the sleeve perforation, and the insertion bevel increases the inner diameter of the sleeve perforation along the axial direction.

[0011] By adopting the above technical solution, the plugging bevel makes it easier for the shielding ring to be inserted into the sleeve through-hole, thereby reducing the difficulty of assembling the shielding ring.

[0012] Optionally, the via connector further comprises a sealing tail cover which is detachably mounted on the connector body, a first sealing ring is mounted in the connecting through hole, and two sides of the first sealing ring are respectively tightly fitted on the sealing tail cover and the inner wall of the connecting through hole.

[0013] By adopting the above technical solution, the first sealing ring is helpful to increase the sealing performance of the connecting through-hole, so that water vapor is not easy to penetrate into the connecting through-hole.

[0014] Optionally, the connector body is provided with a snap-fitting protrusion, and the sealing tail cover is provided with a tail cover snap-fitting groove, and the tail cover snap-fitting groove is used to make the sealing tail cover snap-fitted with the snap-fitting protrusion.

[0015] By adopting the above technical solution, the tail cover is snap-fitted to the connector body through the snap-fitting protrusion, which makes it easy to assemble the tail cover and also easy to disassemble the tail cover when installing and debugging the wiring harness.

[0016] Optionally, a perforated snap-fit ​​groove is formed on the inner wall of the connecting perforation, and the elastic sleeve has a locking protrusion, and the locking protrusion is used to make the elastic sleeve snap-fit ​​into the perforated snap-fit ​​groove.

[0017] By adopting the above technical solution, after the snap-fitting protrusion is snap-fitted into the perforated snap-fitting groove, the elastic sleeve is not easy to move along the axial direction, thereby ensuring the stability of the wiring harness.

[0018] Optionally, the perforated snap-in groove extends along the axis of the connecting perforation to the surface of the first sealing ring, and the first sealing ring closes one end of the perforated snap-in groove extending toward the first sealing ring.

[0019] By adopting the above technical solution, after the first sealing ring closes the perforated snap-in groove, the snap-in protrusion will be difficult to disengage from the perforated snap-in groove, so that the elastic sleeve is less likely to move along the axial direction, thereby further ensuring the stability of the wiring harness. When the wiring harness needs to be installed and debugged, the first sealing ring can be deformed to fine-tune the elastic sleeve, so that the elastic sleeve has sufficient stability on the one hand and sufficient mobility to support fine-tuning on the other hand.

[0020] Optionally, the elastic sleeve is provided with a deformation seam, which is arranged through the elastic sleeve in the thickness direction and extends to both ends along the axial direction of the elastic sleeve. After the elastic sleeve is crimped and sleeved on the shielding ring, the deformation seam is closed.

[0021] By adopting the above technical solution, the elastic sleeve is deformed through the deformation seam, which is conducive to reducing the difficulty of pressing the elastic sleeve into the connection perforation. In addition, the deformation seam can be closed after the elastic sleeve is crimped and sleeved on the shielding ring to ensure the shielding effect of the elastic sleeve, thereby making the elastic sleeve easier to deform while ensuring the shielding effect.

[0022] The present application also discloses a mounting structure of a via connector, which adopts the following technical solution:

[0023] A mounting structure of a via connector comprises a wire harness, wherein the wire harness is mounted on the via connector.

[0024] Optionally, the mounting structure of the via connector also includes a copper foil ring, the wiring harness includes a wire core, a shielding braided mesh and an outer skin, one end of the shielding braided mesh is sleeved on the wire core, the outer skin is sleeved on one end of the shielding braided mesh, the copper foil ring is sleeved on the outer skin, and the other end of the shielding braided mesh is turned outward and sleeved on the copper foil; the shielding ring is crimped on the other end of the shielding braided mesh, and the elastic sleeve is provided with a protrusion, the protrusion is tightly fitted on the shielding ring, and the elastic sleeve is tightly fitted on the inner wall of the connecting through-hole.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When installing the wire harness on the through-hole connector, first crimp the shielding ring onto the wire harness, then insert the shielding ring and the wire harness into the sleeve through-hole together, so that the inner wall of the sleeve through-hole fits tightly against the outer peripheral surface of the shielding ring, and then press the elastic sleeve, shielding ring and wire harness into the connecting through-hole together, so that the elastic sleeve fits tightly against the inner wall of the sleeve through-hole, so that the wire harness is stably fixed on the through-hole connector. When the wire harness needs to be installed and debugged later, the elastic sleeve can be pulled or pushed by the wire harness so that the length of the terminal at the end of the wire harness can be fine-tuned as needed, or the elastic sleeve can be rotated by the wire harness so that the angle of the terminal at the end of the wire harness can be fine-tuned as needed, thereby facilitating the operator to install and debug the wire harness installed on the through-hole connector;

[0027] 2. After the first sealing ring closes the perforated snap-in slot, the snap-in protrusion will be difficult to disengage from the perforated snap-in slot, making it more difficult for the elastic sleeve to move along the axial direction, thereby further ensuring the stability of the wiring harness. When the wiring harness needs to be installed and debugged, the first sealing ring can be deformed to fine-tune the elastic sleeve, so that the elastic sleeve has sufficient stability on the one hand and sufficient mobility to support fine-tuning on the other. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the first overall schematic diagram of the via connector of Example 1 of the present application.

[0029] Figure 2 This is a second overall schematic diagram of the via connector in Example 1 of the present application.

[0030] Figure 3 It is an exploded schematic diagram of the via connector of Example 1 of the present application.

[0031] Figure 4 It is an overall schematic diagram of the elastic sleeve of Example 1 of the present application.

[0032] Figure 5 It is a schematic diagram of the first matching relationship between the elastic sleeve and the connector body after crimping in Example 1 of the present application.

[0033] Figure 6 It is a schematic diagram of the second matching relationship between the elastic sleeve and the connector body after crimping in Example 1 of the present application.

[0034] Figure 7 It is a schematic diagram of the elastic sleeve after crimping in Example 1 of the present application.

[0035] Figure 8 It is a cross-sectional schematic diagram of the via connector of Example 2 of the present application.

[0036] Fig. 9 yes Figure 8An enlarged schematic diagram of part A.

[0037] Fig.10 This is a schematic diagram of the elastic sleeve after crimping in Example 2 of the present application.

[0038] Fig.11 It is a schematic diagram of the matching relationship between the elastic sleeve and the connector body after crimping in Example 3 of the present application.

[0039] Fig.12 It is a schematic diagram of the matching relationship between the elastic sleeve and the connector body after crimping in Example 4 of the present application.

[0040] Explanation of the reference numerals: 1. Connector body; 101. Connecting perforation; 102. Perforated snap-in groove; 11. Snap-in protrusion; 12. First sealing ring; 2. Shielding ring; 201. Ring body perforation; 202. Ring body snap-in groove; 21. Shielding ring; 22. Second sealing ring; 3. Elastic sleeve; 301. Sleeve perforation; 302. Deformation seam; 31. Sleeve part; 32. Abutment part; 321. Crimping bevel; 322. Insertion bevel; 33. Raised part; 34. Locking protrusion; 4. Sealing tail cover; 401. Tail cover snap-in groove; 5. Wiring harness; 51. Wire core; 52. Shielding braided mesh; 53. Outer skin; 6. Copper foil ring. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-11 This application is described in further detail.

[0042] Embodiment 1:

[0043] Embodiment 1 of the present application discloses a via connector. Figures 1 to 3 The through-hole connector includes a connector body 1, a shielding ring 2, an elastic sleeve 3 and a sealing tail cover 4.

[0044] Reference Figure 3 , the connector body 1 is provided with two connecting through-holes 101, and the cross-sections of the two connecting through-holes 101 are both circular, and the two connecting through-holes 101 are arranged in parallel. There are two shielding rings 2, two elastic sleeves 3 and two sealing tail covers 4, and the two shielding rings 2, the elastic sleeves 3 and the sealing tail covers 4 are respectively arranged in one-to-one correspondence with the two connecting through-holes 101. The material of the shielding ring 2 is metal, and the shielding ring 2 is provided with a ring body through-hole 201, and the ring body through-hole 201 is used to crimp the shielding ring 2 on the wiring harness 5. The outer peripheral surface of the shielding ring 2 is provided with a ring body groove 202, and the ring body groove 202 is provided with a shielding ring 21. In Example 1 of the present application, the shielding ring 2 is crimped to the wiring harness 5 by a hexagonal crimping pliers sleeve, and the cross-section of the shielding ring 2 after being crimped on the wiring harness 5 is hexagonal.

[0045] Reference Figure 4 and Figure 5When the through-hole connector is installed with the wiring harness 5, the elastic sleeve 3 is located in the connecting through-hole 101. The elastic sleeve 3 is elastic, and the material of the elastic sleeve 3 is metal, so that the wiring harness 5 can be further shielded by the deformable elastic sleeve 3. Specifically, the elastic sleeve 3 includes a sleeve portion 31 and an abutment portion 32. A sleeve through-hole 301 is provided inside the sleeve portion 31, and the cross-section of the sleeve portion 31 and the cross-section of the sleeve through-hole 301 are circular before crimping. Figure 6 and Figure 7 The cross-section of the sleeve portion 31 and the cross-section of the sleeve through-hole 301 are both hexagonal after being crimped and sleeved on the shielding ring 2 by the crimping equipment, so that the elastic sleeve 3 can be firmly connected to the shielding ring 2 through the sleeve through-hole 301. The abutment portion 32 is integrally connected to the outer peripheral surface of the sleeve portion 31, and the abutment portion 32 is arranged close to the orifice of the sleeve through-hole 301. The cross-section of the abutment portion 32 is circular, so that when the through-hole connector is installed with the wiring harness 5, the circular abutment portion 32 is tightly fitted with the inner wall of the connecting through-hole 101, so that it is convenient for the operator to rotate the elastic sleeve 3 by applying external force, thereby facilitating installation and debugging.

[0046] The sleeve portion 31 is formed with two protrusions 33 in the process of being crimped and sleeved on the shielding ring 2 by the crimping device, and the surfaces of the two protrusions 33 are both arranged in an arc surface. The two protrusions 33 are integrally connected to the sleeve portion 31, and the two protrusions 33 are arranged opposite to each other, so that the protrusions 33 are tightly fitted on the outer peripheral surface of the shielding ring 2, thereby stably setting the wire harness 5 in the sleeve through-hole 301.

[0047] Reference Figure 5 The abutment portion 32 is provided with a crimping bevel 321, which increases the outer diameter of the elastic sleeve 3 along the axial direction. Specifically, the crimping bevel 321 is arranged along the radial direction of the abutment portion 32 and is inclined toward the direction away from the opening of the sleeve through hole 301. The crimping bevel 321 is arranged to be closed from head to tail, and the crimping bevel 321 is arranged away from the opening of the sleeve through hole 301, so that when the wire harness 5 is inserted into the sleeve through hole 301 to expand the elastic sleeve 3, the abutment portion 32 slides into the connecting through hole 101 through the crimping bevel 321.

[0048] Reference Figure 7 The inner wall of the sleeve through hole 301 is provided with an insertion bevel 322, which is located at the opening of the sleeve through hole 301, and the insertion bevel 322 increases the inner diameter of the sleeve through hole 301 along the axial direction. Specifically, there are six insertion bevels 322, which are respectively provided on six inner walls of the sleeve through hole 301. The insertion bevel 322 is inclinedly arranged along the radial direction of the sleeve through hole 301 and away from the opening of the sleeve through hole 301, so as to facilitate the insertion of the wire harness 5 into the sleeve through hole 301.

[0049] Reference Figure 3 and Figure 5 The connector body 1 is provided with four snap-fitting protrusions 11, which are distributed in a rectangular shape, and each sealing tail cover 4 corresponds to two snap-fitting protrusions 11. The sealing tail cover 4 is elastic, and two tail cover slots 401 are formed through the sealing tail cover 4. The snap-fitting protrusions 11 are snap-fitted with the tail cover slots 401, so that the sealing tail cover 4 is snap-fitted with the connector body 1, thereby facilitating later inspection, maintenance or debugging.

[0050] Reference Figure 5 A first sealing ring 12 is installed in the connection through-hole 101. The first sealing ring 12 is elastic, and the two sides of the first sealing ring 12 are respectively tightly fitted to the sealing tail cover 4 and the inner wall of the connection through-hole 101, so as to increase the sealing performance of the connection through-hole 101 and prevent water vapor from penetrating into the connection through-hole 101. A second sealing ring 22 is fixedly sleeved on the outer circumference of the shielding ring 2, and the two sides of the second sealing ring 22 are respectively tightly fitted to the shielding ring 2 and the connector body 1, so as to further increase the sealing performance of the connection through-hole 101.

[0051] The implementation principle of a through-hole connector in Example 1 of the present application is: S1. The shielding ring 2 is crimped and sleeved on the wiring harness 5 by using a hexagonal crimping pliers, so that the cross-section of the shielding ring 2 is set in a hexagonal shape, so that the subsequent sleeve part 31 is not easily deflected due to the smooth curved surface of the shielding ring 2 during the crimping process on the shielding ring 2.

[0052] S2. Insert the shielding ring 2 and the wiring harness 5 together into the sleeve through-hole 301, and then crimp the sleeve portion 31 onto the shielding ring 2 through the crimping equipment, and further press the raised portion 33 formed on the sleeve portion 31 during the crimping process against the outer peripheral surface of the shielding ring 2, so that the elastic sleeve 3 is not easily deflected due to improper operation of the operator during the subsequent crimping process.

[0053] S3. Press the elastic sleeve 3, the shielding ring 2 and the wiring harness 5 together into the connecting through-hole 101. The abutment portion 32 is deformed by the crimping inclined surface 321, so that the abutment portion 323 is tightly fitted against the inner wall of the sleeve through-hole 301, so that the wiring harness 5 is stably fixed on the through-hole connector.

[0054] S4, putting the first sealing ring 12 into the connecting through hole 101, and then snap-fitting the sealing tail cover 4 to the connector body 1 through the tail cover snap-fitting groove 401.

[0055] When the wiring harness 5 needs to be installed and debugged, the elastic sleeve 3 is pulled or pushed from the connecting through hole 101 through the wiring harness 5 to achieve length adjustment, or the elastic sleeve 3 is rotated through the circular abutment portion 32 to achieve angle adjustment, thereby facilitating the operator to fine-tune the installation of the wiring harness installed on the through-hole connector, so that the wiring harness of the through-hole connector can overcome installation errors and be firmly connected to the designated device.

[0056] Embodiment 2:

[0057] Embodiment 2 of the present application discloses a via connector, which includes all the technical features of Embodiment 1 and further includes:

[0058] Reference Figure 8 and Fig. 9 The connector body 1 is integrally formed by injection molding. The inner wall of the connecting through hole 101 is provided with a perforated card slot 102, which extends along the axis of the connecting through hole 101 to the surface of the first sealing ring 12, so as to reduce the difficulty of molding the perforated card slot 102. Fig. 9 The elastic sleeve 3 further includes a locking protrusion 34, which is integrally connected and sleeved on the outer circumferential surface of the sleeve portion 31. Fig.10 The locking protrusion 34 is circular and is far from the abutment portion 32, and the outer peripheral surface of the locking protrusion 34 is rounded. The first sealing ring 12 closes the end of the perforated card slot 102 extending toward the first sealing ring 12, so that the elastic sleeve 3 is engaged with the perforated card slot 102 through the locking protrusion 34.

[0059] The implementation principle of a through-hole connector in Example 2 of the present application is as follows: after the elastic sleeve 3 is elastically deformed and pressed into the connecting through-hole 101, the locking protrusion 34 recovers its deformation and snaps into place with the through-hole snap-in groove 102, and then the through-hole snap-in groove 102 is closed by the elastic first sealing ring 12. On the one hand, the locking protrusion 34 is restricted in the through-hole snap-in groove 102, so that the elastic sleeve 3 is not easy to detach from the connecting through-hole 101 and the wiring harness is not easy to passively change in length under the action of slight external force. On the other hand, it is convenient for the operator to fine-tune the length and / or angle of the wiring harness by actively compressing the first sealing ring 12 or actively twisting the first sealing ring 12.

[0060] Embodiment 3:

[0061] Embodiment 1 of the present application discloses a via connector, in addition to all the technical features of Embodiment 1, further comprising: Fig.11The elastic sleeve 3 is penetrated with a deformation slit 302, and the deformation slit 302 is penetrated along the thickness direction of the elastic sleeve 3. The deformation slit 302 extends to both ends along the axial direction of the elastic sleeve 3, and the deformation slit 302 is closed after the elastic sleeve 3 is crimped and sleeved on the shielding ring 2, so that the elastic sleeve 3 is deformed through the deformation slit 302, which is conducive to reducing the difficulty of pressing the elastic sleeve into the connecting through hole 101.

[0062] The implementation principle of a via connector in Example 3 of the present application is as follows: the deformation seam 302 makes it easier for the elastic sleeve 3 to be deformed when it is expanded under the action of the wiring harness 5 or when it is pressed into the connecting through-hole 101, and the deformation seam 302 can be closed after the elastic sleeve 3 is crimped and sleeved on the shielding ring 2 to ensure the shielding effect of the elastic sleeve 3, thereby making the elastic sleeve 3 easier to deform while ensuring the shielding effect.

[0063] Embodiment 4:

[0064] The present application also discloses a mounting structure of a via connector, referring to Fig.12 The mounting structure of the through-hole connector includes a wire harness 5 and a copper foil ring 6. The wire harness 5 includes a wire core 51, a shielding braided mesh 52 and an outer skin 53. One end of the shielding braided mesh 52 is fixedly sleeved on the wire core 51, and the outer skin 53 is sleeved on one end of the shielding braided mesh 52. The copper foil ring 6 is sleeved on the outer skin 53, and the other end of the shielding braided mesh 52 is turned outward and sleeved on the copper foil ring 6, and the end of the shielding braided mesh 52 is arranged flush with the end of the shielding ring 2. The shielding ring 2 is crimped and sleeved on the other end of the shielding braided mesh 52, and the protrusion 33 of the elastic sleeve 3 is tightly fitted on the shielding ring 2, and the elastic sleeve 3 is tightly fitted on the inner wall of the connecting through hole 101.

[0065] The implementation principle of a through-hole connector in Example 4 of the present application is as follows: first, peel off the outer skin 53, then sleeve the copper foil ring 6 on the outer skin 53, then turn the shielding braided mesh 52 outward and cover it on the copper foil ring 6, and finally crimp the shielding ring 2 on the shielding braided mesh 52, and remove the portion of the shielding braided mesh 52 exposed from the shielding ring 2, thereby completing the installation of the shielding ring 2. After the shielding ring 2 is installed on the wiring harness 5, the shielding ring 2 is inserted into the sleeve perforation 301, and then the elastic sleeve 3 is pressed into the connecting perforation 101, thereby installing the wiring harness 5 on the through-hole connector.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A via connector, characterized in that: It comprises a connector body (1), a shielding ring (2) and an elastic sleeve (3); The connector body (1) is integrally formed by an injection molding process, the connector body (1) is provided with a connecting through hole (101), the shielding ring (2) is provided with a ring body through hole (201), and the ring body through hole (201) is used to enable the shielding ring (2) to be crimped and sleeved on the wiring harness (5); the shielding ring (2) and the elastic sleeve (3) are both made of metal, the elastic sleeve (3) is provided with a sleeve through hole (301), and the sleeve through hole (301) is used to enable the elastic sleeve (3) to be crimped and sleeved on the shielding ring (2), the elastic sleeve (3) is elastic, and the elastic sleeve (3) has an abutment portion (32), the cross section of the abutment portion (32) is circular, and when the through-hole connector is installed with the wiring harness (5), the abutment portion (32) is tightly fitted on the inner wall of the connecting through hole (101); The through-hole connector further comprises a sealing tail cover (4), the sealing tail cover (4) being detachably mounted on the connector body (1), a first sealing ring (12) being mounted in the connecting through hole (101), and two sides of the first sealing ring (12) respectively tightly fitting against the sealing tail cover (4) and the inner wall of the connecting through hole (101); The inner wall of the connecting through hole (101) is provided with a perforated snap-fitting groove (102), the perforated snap-fitting groove (102) extends along the axis of the connecting through hole (101) to the surface of the first sealing ring (12), and the first sealing ring (12) closes the end of the perforated snap-fitting groove (102) extending toward the first sealing ring (12), and the elastic sleeve (3) has a locking protrusion (34), and the locking protrusion (34) is used to make the elastic sleeve (3) snap-fit ​​into the perforated snap-fitting groove (102).

2. A via connector according to claim 1, characterized in that: The abutment portion (32) is provided with a crimping inclined surface (321), and the crimping inclined surface (321) increases the outer diameter of the elastic sleeve (3) along the axial direction.

3. A via connector according to claim 1, characterized in that: The inner wall of the sleeve through hole (301) is provided with an insertion bevel (322), the insertion bevel (322) is located at the opening of the sleeve through hole (301), and the insertion bevel (322) increases the inner diameter of the sleeve through hole (301) along the axial direction.

4. A via connector according to claim 1, characterized in that: The connector body (1) is provided with a snap-fitting protrusion (11), and the sealing tail cover (4) is provided with a tail cover snap-fitting groove, wherein the tail cover snap-fitting groove is used to snap-fit ​​the sealing tail cover (4) to the snap-fitting protrusion (11).

5. A via connector according to claim 1, characterized in that: The elastic sleeve (3) is provided with a deformation seam (302), the deformation seam (302) is arranged to penetrate along the thickness direction of the elastic sleeve (3), and the deformation seam (302) extends to both ends along the axial direction of the elastic sleeve (3), and after the elastic sleeve (3) is crimped and sleeved on the shielding ring (2), the deformation seam (302) is closed.

6. A mounting structure of a via connector, characterized in that: It comprises a wiring harness (5), wherein the wiring harness (5) is installed on the via connector according to any one of claims 1 to 5.

7. The via connector installation structure according to claim 6, characterized in that: The mounting structure of the through-hole connector also includes a copper foil ring (6), the wiring harness (5) includes a wire core (51), a shielding braided mesh (52) and an outer skin (53), one end of the shielding braided mesh (52) is sleeved on the wire core (51), the outer skin (53) is sleeved on one end of the outer skin (53), the copper foil ring (6) is sleeved on the outer skin (53), and the other end of the shielding braided mesh (52) is turned outward and sleeved on the copper foil; the shielding ring (2) is crimped and sleeved on the other end of the shielding braided mesh (52), the elastic sleeve (3) is provided with a protrusion (33), the protrusion (33) is tightly fitted on the shielding ring (2), and the elastic sleeve (3) is tightly fitted on the inner wall of the connecting through hole (101).

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