CN215911605U

CN215911605U - Multi-core cable shielding layer installation assembly and signal transmission device

Info

Publication number: CN215911605U
Application number: CN202120920078.0U
Authority: CN
Inventors: 董爱兵; 王勇; 姚李强; 王迎春; 甘海波
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-02-25
Anticipated expiration: 2031-04-29
Also published as: FR3122531A1

Abstract

The utility model relates to a multi-core cable shielding layer installation assembly and a signal transmission device comprising the same. The multi-core cable shielding layer mounting assembly comprises a mounting main body, a shielding ring and a mounting groove, wherein the mounting main body is provided with a through hole for accommodating a multi-core cable, and the mounting main body extends outwards along the radial direction of the through hole to form the shielding ring; the lead wires are supported on the outer surface of the mounting main body, one end of each lead wire is used for being connected with the shielding layer of the multi-core cable, and the other end of each lead wire is used for being abutted against the shielding ring, so that the shielding layer and the lead wires are electrically connected with the mounting main body; and a clip surrounding an outer surface of the mounting body, the plurality of leads passing through a space between the clip and the outer surface and being fixed to the outer surface of the mounting body by the clip. The multi-core cable shielding layer installation assembly can meet the signal transmission capability and can effectively guide external interference signals into the ground.

Description

Multi-core cable shielding layer installation assembly and signal transmission device

Technical Field

The utility model belongs to the field of signal transmission, and particularly relates to a multi-core cable shielding layer installation assembly and a signal transmission device.

Background

With the rapid change of the railway industry, people put higher requirements on signal transmission capability. High signal transmission capability necessarily requires that connectors for signal transmission need to have more core pins (Pin pins) and correspondingly more cable cores connected with the Pin pins, and to meet the requirement, most of the current cables adopt multi-core cables. The signal transmission of the multi-core cable requires higher reliability, intellectualization and electromagnetic interference resistance.

In order to avoid signal interference to the multi-core cable, a shielding layer is arranged on each cable core, and a part of core pins are connected with the shielding layer of the cable core to ground the shielding layer, so that an external interference signal can be effectively guided into the ground to avoid the interference signal entering the cable to interfere the signal transmission of the cable core. Therefore, the design mode adopted at present enables the time of product assembling workers to be more, the assembling efficiency is reduced, the product cost is increased, and under the condition of meeting the shielding requirement, the number of the core pins is sacrificed, so that the connection between more core pins and a cable core cannot be met, and the signal transmission capability is further reduced. In addition, in the prior art, a multi-core cable and a signal connector are provided, the multi-core cable is provided with a total shielding layer, the shielding layer is arranged around all cable cores, and the shielding layer is not separately arranged for each cable core, so that although the connection quantity of the cable cores and core pins is ensured, the signal transmission capability is improved, the grounding problem of the shielding layer is difficult to solve, and the signal interference problem cannot be solved.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.

According to an aspect of the present invention, there is provided a multi-core cable shield mounting assembly for a multi-core cable, the multi-core cable including a plurality of cable cores and a shield arranged around all of the plurality of cable cores, the multi-core cable shield mounting assembly comprising:

the mounting main body is provided with a through hole for accommodating the multi-core cable, and a shielding ring extends outwards along the radial direction of the through hole;

a plurality of leads supported on an outer surface of the mounting body, wherein one end of each lead is used for connecting with the shielding layer of the multi-core cable, and the other end of each lead is used for abutting against the shielding ring, so that the shielding layer and the leads are electrically connected with the mounting body; and

a band surrounding the outer surface of the mounting body, the plurality of leads passing through a space between the band and the outer surface and being secured to the outer surface by the band.

According to an exemplary embodiment of the present invention, the outer surface of the mounting body is a conical surface, an outer diameter of the conical surface is gradually increased from an end of the conical surface, which is away from the shield ring, to an end of the conical surface, which is close to the shield ring, in an axial direction of the through hole, an inner side of the clip is annular, and an inner diameter of the clip is larger than a minimum outer diameter of the conical surface and smaller than a maximum outer diameter of the conical surface.

According to another exemplary embodiment of the present invention, the outer surface of the mounting body is a cylindrical surface, and the multiconductor cable shield mounting assembly further comprises a clamp for clamping the clip on the outer surface of the mounting body.

According to another exemplary embodiment of the present invention, the plurality of leads are arranged on the outer surface of the mounting body in a circumferential direction of the through-hole.

According to another exemplary embodiment of the present invention, the mounting body, the shield ring and the plurality of leads are all made of metal.

According to another aspect of the present invention, there is provided a signal transmission apparatus including a male-end socket connector, a female-end plug connector, a first multi-core cable, a second multi-core cable, and a plurality of core pins, the first multi-core cable and the second multi-core cable each including a plurality of cable cores and a shield layer disposed around all of the plurality of cable cores, wherein,

one end of the male end socket connector is fixedly connected with one end of the female end plug connector, and the multi-core cable shielding layer mounting assembly is mounted at the other end of the male end socket connector and the other end of the female end plug connector;

the plurality of core pins are arranged across the interior of the male-end socket connector and the interior of the female-end plug connector; and is

The first multi-core cable and the second multi-core cable are respectively accommodated in the through holes of the corresponding multi-core cable shielding layer installation assemblies, cable cores of the first multi-core cable are respectively connected into one end of a corresponding core needle in a pressing mode, cable cores of the second multi-core cable are respectively connected into the other end of the corresponding core needle in a pressing mode, and therefore the plurality of cable cores of the first multi-core cable, the plurality of core needles and the plurality of cable cores of the second multi-core cable are sequentially electrically connected in a one-to-one correspondence mode.

According to an exemplary embodiment of the utility model, each core pin comprises a male terminal located in the male end socket connector and a female terminal located in the female end plug connector, one end of each male terminal is in plug fit with one end of the corresponding female terminal to form a core pin together, the other end of each male terminal is concave to form a male terminal crimping end for inserting a cable core of the first multi-core cable, and the other end of each female terminal (102) is concave to form a female terminal crimping end for inserting a cable core of the second multi-core cable.

According to another exemplary embodiment of the present invention, the male-end socket connector includes a socket housing and a male-end insulator disposed within the socket housing, the female-end plug connector includes a plug housing and a female-end insulator disposed within the plug housing, and each core pin is disposed within the male-end insulator and the female-end insulator.

According to another exemplary embodiment of the present invention, the receptacle housing is threadedly coupled with the plug housing.

According to another exemplary embodiment of the present invention, the threaded connection between the socket housing and the plug housing is provided with a sealing ring.

According to another exemplary embodiment of the present invention, the mounting body has a mounting portion extending away from the shield ring in an axial direction of the through-hole, the mounting portion being used to mount the mounting body to the corresponding socket housing or the plug housing.

According to another exemplary embodiment of the present invention, an auxiliary mounting ring and a sealing ring are provided between the mounting portion and the corresponding socket housing or the plug housing.

According to another exemplary embodiment of the present invention, the socket housing, the plug housing and the mounting portion are all made of a metal material, and the socket housing or the plug housing can be grounded.

According to another exemplary embodiment of the utility model, each lead of the multi-core cable shielding layer installation component is a braid woven by metal mesh wires at the end of the corresponding shielding layer.

In the foregoing exemplary embodiments of the present invention, the provided multi-core cable shielding layer mounting assembly is suitable for a multi-core cable including a plurality of cable cores and shielding layers arranged around all the cable cores, and can effectively guide an external interference signal into the ground while satisfying signal transmission capability, so as to avoid interference of the external signal on signal transmission.

Other objects and advantages of the present invention will become apparent from the following description of the utility model which refers to the accompanying drawings, and may assist in a comprehensive understanding of the utility model.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, it being understood that the drawings described below relate only to some embodiments of the present invention and are not limiting to the utility model, wherein:

fig. 1 is a schematic structural diagram of a multi-core cable shield mounting assembly according to an embodiment of the present invention, wherein the outer surface of the mounting body is a cylindrical surface.

Fig. 2 is an assembly view of the multi-conductor cable shield mounting assembly, the multi-conductor cable and the connector of fig. 1.

Fig. 3 is a schematic structural diagram of a multi-core cable shield mounting assembly according to an embodiment of the utility model, wherein the outer surface of the mounting body is a conical surface.

Fig. 4 is an assembly view of the multi-conductor cable shield mounting assembly, the multi-conductor cable and the connector of fig. 3.

Fig. 5 is a sectional view of a signal transmission device according to an embodiment of the present invention.

Fig. 6 is an exploded view of the male-end receptacle connector of fig. 5 and a corresponding multi-conductor cable shield mounting assembly.

Fig. 7 is an exploded view of the female plug connector of fig. 5 and a corresponding multi-conductor cable shield mounting assembly.

Reference numerals:

1. mounting the main body; 2. a lead wire; 3. clamping a hoop; 4. a through hole; 5. a shield ring; 6. an outer surface of the mounting body; 7. a shielding layer; 8. a male-end socket connector; 81. a socket housing; 82. a male end insulator; 9. a female terminal plug connector; 91. a plug housing; 92. a female terminal insulator; 10. a core needle; 101. a male terminal; 102. a female terminal; 11. a multi-core cable; 111. a male terminal crimping end; 112. a female terminal crimping end; 12. a seal ring; 13. an installation part; 14. an auxiliary mounting ring; 15. a seal ring; 16. a tail attachment; 17. cable gland head.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the present invention, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the following description of the embodiments is intended to illustrate and explain the present general inventive concept and should not be taken as limiting the present invention. In the specification and drawings, the same or similar reference numerals refer to the same or similar parts or components. The figures are not necessarily to scale and certain well-known components and structures may be omitted from the figures for clarity.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "a" or "an" does not exclude a plurality. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top" or "bottom", etc. are used merely to indicate relative positional relationships, which may change when the absolute position of the object being described changes. When an element is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

As shown in fig. 1 and 2, the present embodiment provides a multi-core cable shield mounting assembly for a multi-core cable 11, the multi-core cable 11 including a plurality of cores and a shield 7 disposed around all of the plurality of cores, the multi-core cable shield mounting assembly including a mounting body 1, a plurality of leads 2, and a clip 3. The mounting body 1 is opened with a through hole 4 for accommodating the multicore cable 11, the mounting body 1 extends outward in a radial direction of the through hole 4 to form a shield ring 5, and the mounting body 1 can be connected to a connector for signal transmission to be grounded. The plurality of leads 2 are supported on the outer surface 6 of the mounting body 1, wherein one end of each lead 2 is used for being connected with the shielding layer 7 of the multi-core cable, the other end of each lead 2 is used for being abutted against the shielding ring 5, and the annular structure of the shielding ring 5 can ensure that the leads 2 are more reliably contacted with the mounting body 1, so that the shielding layer 7, the leads 2 and the mounting body 1 form firmer electric connection. The clip 3 is wrapped around the outer surface 6 of the mounting body 1, and the plurality of lead wires 2 pass through a space between the clip 3 and the outer surface 6 and are fixed to the outer surface 6 of the mounting body by the clip 3.

The specific configuration of the multi-core cable shield mounting assembly of the embodiment is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the outer surface 6 of the mounting body 1 may be a cylindrical surface, and in order to firmly fix the plurality of leads to the outer surface of the mounting body, the multicore cable shield mounting assembly of the present embodiment further includes a clamp, and the clip 3 is clamped to the outer surface 6 of the mounting body 1 by the clamp, thereby firmly fixing the leads to the outer surface of the mounting body. In this case, the multi-core cable shield mounting assembly, the multi-core cable and the connector may be assembled as shown in fig. 2.

As shown in fig. 3, the outer surface 6 of the mounting main body 1 may be a conical surface having an outer diameter that gradually increases from one end of the conical surface that is away from the shield ring 5 to one end of the conical surface that is close to the shield ring 5 in the axial direction of the through-hole 4, the inner side of the clip 3 may be annular, and the inner diameter of the clip 3 may be larger than the minimum outer diameter of the conical surface and smaller than the maximum outer diameter of the conical surface. The arrangement is such that the clip 3 can be fixed to the outer surface 6 of the mounting body 1 by simply moving the clip 3 to the maximum outer diameter of the conical surface of the mounting body 1, thereby firmly fixing the lead 2 to the outer surface 6 of the mounting body 1. In this case, the multi-core cable shield mounting assembly, the multi-core cable and the connector may be assembled as shown in fig. 4.

As can be seen from fig. 2 and 4, the plurality of leads 2 are arranged on the outer surface 6 of the mounting body 1 along the circumferential direction of the through hole 4, and thus, the plurality of leads 2 are arranged along the circumferential direction of the shielding layer 7, so that the shielding layer 7 forms 360 ° ground, thereby achieving a better shielding effect on external interference signals.

Specifically, the mounting body 1, the shielding ring 5 and the plurality of leads 2 are all made of metal materials, so that the shielding layer 7, the leads 2 and the mounting body 1 are better electrically connected, and the shielding layer 7 is better grounded. The mounting body 1 and the shield ring 5 may be integrally formed to make the structure more firm.

In addition, as shown in fig. 5 to 7, an embodiment of the present invention also provides a signal transmission device, which is generally cylindrical in shape and includes a male-end receptacle connector 8 (i.e., the connector on the left side in fig. 5), a female-end plug connector 9 (i.e., the connector on the right side in fig. 5), a first multi-core cable, a second multi-core cable, and a plurality of core pins 10 (also referred to as Pin pins), the first multi-core cable and the second multi-core cable each including a plurality of core pins and a shield layer, such as the shield layer 7, disposed around all of the plurality of core pins.

One end (the right end in fig. 5) of the male-end socket connector 8 and one end (the left end in fig. 5) of the female-end plug connector 9 are fixedly connected, and the multi-core cable shielding layer mounting assembly shown in fig. 1 or fig. 3 is mounted on the other end (the left end in fig. 5) of the male-end socket connector 8 and the other end (the right end in fig. 5) of the female-end plug connector 9. That is, the other end of the male-end socket connector 8 and the other end of the female-end plug connector 9 may be mounted with the same multi-core cable shield mounting assembly, for example, the other end of the male-end socket connector 8 and the other end of the female-end plug connector 9 may be both mounted with the multi-core cable shield mounting assembly shown in fig. 1 (or the multi-core cable shield mounting assembly shown in fig. 3); the other end of the male-end socket connector 8 and the other end of the female-end plug connector 9 may also be respectively mounted with different multi-core cable shielding layer mounting assemblies, for example, the multi-core cable shielding layer mounting assembly shown in fig. 1 is mounted at the other end of the male-end socket connector 8, and the multi-core cable shielding layer mounting assembly shown in fig. 3 is mounted at the other end of the female-end plug connector 9.

As shown in fig. 5, a plurality of core pins 10 are arranged across the inside of the male-end socket connector 8 and the inside of the female-end plug connector 9; and two multi-core cables 11 (a first multi-core cable and a second multi-core cable) are respectively accommodated in the through holes 4 of the corresponding multi-core cable shielding layer installation component, and the cable cores of the first multi-core cable are respectively crimped into one end of a corresponding core pin, and the cable cores of the second multi-core cable are respectively crimped into the other end of a corresponding core pin, so that the plurality of cable cores of the first multi-core cable, the plurality of core pins and the plurality of cable cores of the second multi-core cable are electrically connected in sequence in one-to-one correspondence.

Referring to fig. 5, each core pin includes a male terminal 101 located in the male-end socket connector 8 and a female terminal 102 located in the female-end plug connector 9, one end of the male terminal 101 is in plugging fit with one end of the corresponding female terminal 102 to collectively form the core pin 10, the other end of the male terminal 101 is recessed to form a male terminal crimping end 111 into which a core of the first multi-core cable is inserted, and the other end of the female terminal 102 is recessed to form a female terminal crimping end 112 into which a core of the second multi-core cable is inserted.

The male-end socket connector 8 and the female-end plug connector 9 are similar in structure, specifically, the male-end socket connector 8 includes a socket housing 81 and a male-end insulator 82 disposed inside the socket housing 81, the female-end plug connector 9 includes a plug housing 91 and a female-end insulator 92 disposed inside the plug housing 91, and each core pin is disposed inside the male-end insulator 82 and the female-end insulator 92.

Regarding the connection manner of the socket housing and the plug housing, the socket housing may be screwed with the plug housing, for example, the surface of the socket housing is provided with an external thread, and the surface of the plug housing is provided with an internal thread matching with the external thread. However, this way of screwing is merely an example, and the embodiment is not limited thereto. In order to make the connection between the socket housing and the plug housing tight, the threaded connection between the socket housing 81 and the plug housing 91 may be provided with a sealing ring 12.

To facilitate mounting of the multi-core cable shield mounting assembly to the connector, the mounting body 1 may extend away from the shield ring 5 in the axial direction of the through hole 4 to form a mounting portion 13, so that the mounting body 1 is mounted to the corresponding socket housing 81 or plug housing 91 through the mounting portion 13. According to an embodiment, referring to fig. 5 to 7, an auxiliary mounting ring 14 (which may be omitted) and a sealing ring 15 may be provided between the mounting portion 13 and the corresponding socket housing 81 or plug housing 91, the auxiliary mounting ring may tightly fit the mounting portion 13 to the corresponding housing, and the sealing ring may improve sealing performance.

In the embodiment, the socket housing 81, the plug housing 91 and the mounting portion 13 are made of metal materials, and the socket housing or the plug housing can be grounded, so that when the multi-core cable shielding layer mounting assembly is mounted on the socket housing or the plug housing, the shielding layer 7, the lead 2, the mounting main body 1 and the corresponding housing are sequentially and electrically connected, so that the shielding layer 7 is grounded, an external interference signal or current in the shielding layer is introduced to the ground, the interference signal is prevented from entering the cable and interfering with the signal transmission of the cable core, the signal transmission capability is ensured not to be affected, and the signal interference problem is effectively solved.

As shown in fig. 2 and 4, each lead 2 of the multi-core cable shielding layer mounting assembly is a braid woven by metal mesh wires at the end of the corresponding shielding layer, that is, the lead 2 is directly taken from the shielding layer and belongs to a part of the shielding layer, and this arrangement improves the connection reliability of the lead 2 and the shielding layer, simplifies the structure and saves the assembly process. One end of each braid is connected with one end of the shielding layer adjacent to the through hole 4, and after the other end of the braid abuts against the shielding ring 5, an excess portion on the other end of the braid may be cut off so that the other end of the braid is aligned with the annular groove of the shielding ring 5. Finally, the connector tail fitting 16, the cable gland 17 and the like can be installed to further fix and seal the multi-core cable of the signal transmission device.

In summary, the multi-core cable shielding layer mounting assembly fixes the plurality of leads on the outer surface of the mounting body through the clamping band, the shielding layer, the leads and the mounting body are electrically connected, and when the multi-core cable shielding layer mounting assembly is used, the connector shell connected with the mounting body is grounded, namely, external interference signals in the shielding layer can be effectively guided to the ground, so that interference on signal transmission of a cable core is avoided. This multicore cable shielding layer installation component reliability is high, the equipment is convenient, labour saving and time saving, and multicore cable shielding layer installation component is applicable to the multicore cable including a plurality of cable cores and the shielding layer of arranging around all cable cores, this kind of multicore cable arranges the shielding layer around all cable cores, can arrange more cable cores like this in order to improve signal transmission ability, that is to say this multicore cable shielding layer installation component is when satisfying signal transmission ability, again can be effectively leading-in earth external interference signal effectively, thereby the interference of external signal to signal transmission has been avoided.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of the embodiments of the present invention and should not be construed as limiting the utility model. The dimensional proportions in the figures are merely schematic and are not to be understood as limiting the utility model.

The foregoing embodiments are merely illustrative of the principles and constructions of this invention and are not to be construed as limiting the utility model, it being understood by those skilled in the art that any variations or modifications may be made to the utility model without departing from the general inventive concept thereof. The protection scope of the present invention shall be defined by the claims of the present application.

Claims

1. A multi-core cable shield mounting assembly for a multi-core cable (11), the multi-core cable (11) comprising a plurality of cable cores and a shield (7) arranged around all of the plurality of cable cores, characterized in that the multi-core cable shield mounting assembly comprises:

the cable connector comprises a mounting main body (1), wherein a through hole (4) used for accommodating the multi-core cable (11) is formed in the mounting main body (1), and a shielding ring (5) extends outwards from the mounting main body (1) along the radial direction of the through hole (4);

a plurality of leads (2), wherein the leads (2) are supported on an outer surface (6) of the mounting body (1), one end of each lead (2) is used for being connected with the shielding layer (7) of the multi-core cable (11), and the other end of each lead (2) is used for being abutted against the shielding ring (5), so that the shielding layer (7) and the leads (2) are electrically connected with the mounting body (1); and

a clamp (3), the clamp (3) surrounding the outer surface (6) of the installation body (1), the plurality of leads (2) passing through a space between the clamp (3) and the outer surface (6) and being fixed to the outer surface (6) by the clamp (3).

2. The multi-core cable shield mounting assembly according to claim 1, wherein the outer surface (6) of the mounting body (1) is a conical surface, an outer diameter of the conical surface becomes gradually larger from an end of the conical surface away from the shield ring (5) to an end of the conical surface close to the shield ring (5) in an axial direction of the through hole (4), an inner side of the yoke (3) is annular, and an inner diameter of the yoke (3) is larger than a minimum outer diameter of the conical surface and smaller than a maximum outer diameter of the conical surface.

3. The multiconductor cable shield mounting assembly according to claim 1, characterized in that the outer surface (6) of the mounting body (1) is a cylindrical surface and further comprising a clamp for clamping the collar (3) on the outer surface (6) of the mounting body (1).

4. The multi-core cable shield mounting assembly according to claim 1, wherein the plurality of leads (2) are arranged on the outer surface (6) of the mounting body (1) along a circumferential direction of the through-hole (4).

5. The multi-core cable shield mounting assembly according to claim 1, wherein the mounting body (1), the shield ring (5) and the plurality of leads (2) are all made of metal.

6. A signal transmission device comprising a male-end socket connector (8), a female-end plug connector (9), a first multi-core cable, a second multi-core cable, and a plurality of core pins (10), the first multi-core cable and the second multi-core cable each comprising a plurality of cable cores and a shielding layer (7) arranged around all of the plurality of cable cores, characterized in that,

one end of the male-end socket connector (8) and one end of the female-end plug connector (9) are fixedly connected, and the other end of the male-end socket connector (8) and the other end of the female-end plug connector (9) are both provided with the multi-core cable shield mounting assembly according to any one of claims 1 to 5;

the plurality of core pins (10) being arranged across the interior of the male end socket connector (8) and the interior of the female end plug connector (9); and is

The first multi-core cable and the second multi-core cable are respectively accommodated in the through holes (4) of the corresponding multi-core cable shielding layer installation assembly, cable cores of the first multi-core cable are respectively connected into one end of a corresponding core needle (10) in a pressing mode, and cable cores of the second multi-core cable are respectively connected into the other end of the corresponding core needle (10) in a pressing mode, so that the plurality of cable cores of the first multi-core cable, the plurality of core needles (10) and the plurality of cable cores of the second multi-core cable are electrically connected in sequence in a one-to-one correspondence mode.

7. The signal transmission device according to claim 6, wherein each core pin (10) comprises a male terminal (101) located in the male socket connector (8) and a female terminal (102) located in the female plug connector (9), one end of the male terminal (101) is in plugging fit with one end of the corresponding female terminal (102) to form the core pin (10) together, the other end of the male terminal (101) is recessed to form a male terminal crimping end (111) for inserting a core of the first multi-core cable, and the other end of the female terminal (102) is recessed to form a female terminal crimping end (112) for inserting a core of the second multi-core cable.

8. The signal transmission device according to claim 6, wherein the male-end socket connector (8) includes a socket housing (81) and a male-end insulator (82) disposed within the socket housing (81), the female-end plug connector (9) includes a plug housing (91) and a female-end insulator (92) disposed within the plug housing (91), and each core pin (10) is disposed within the male-end insulator (82) and the female-end insulator (92).

9. The signal transmission device according to claim 8, wherein the socket housing (81) is screw-coupled with the plug housing (91).

10. The signal transmission device according to claim 9, wherein a seal ring (12) is provided at a threaded connection between the socket housing (81) and the plug housing (91).

11. The signal transmission device according to claim 8, characterized in that the mounting body (1) has a mounting portion (13) extending away from the shielding ring (5) in the axial direction of the through-hole (4), the mounting portion (13) being used for mounting the mounting body (1) to the corresponding socket housing (81) or plug housing (91).

12. The signal transmission device according to claim 11, wherein an auxiliary mounting ring (14) and a sealing ring (15) are provided between the mounting portion (13) and the corresponding socket housing (81) or plug housing (91).

13. The signal transmission device according to claim 11, wherein the receptacle housing (81), the plug housing (91), and the mounting portion (13) are made of a metal material, and the receptacle housing (81) or the plug housing (91) is capable of being grounded.

14. The signal transmission device according to claim 6, wherein each lead (2) of the multi-core cable shielding layer mounting assembly is a braid woven by metal mesh wires at the end of the corresponding shielding layer.