CN220137985U - Signal transmission structure and signal wire harness - Google Patents

Abstract

This application provides a signal transmission structure and a signal wire harness. The cotton layer filler has multiple exposed cotton wires, and the multiple exposed cotton wires are located at one end of the insulating protective sheath away from the connection terminal base. The signal transmission structure also includes a plurality of waterproof components. Each waterproof component includes a waterproof protective sleeve and a waterproof filling glue layer. Each waterproof protective sleeve is set on an end of a corresponding insulating protective sleeve away from the connection terminal base. The waterproof protective sleeve and the insulating protective sleeve The cover is surrounded by a filling area, and the waterproof filling adhesive layer is filled in the filling area, so that the waterproof filling adhesive layer is bonded to the waterproof protective cover, the insulating protective cover, a plurality of exposed cotton wires and a plurality of signal wire cores respectively.

Description

Signal transmission structure and signal wiring harness

Technical field

The utility model relates to the field of signal transmission, and in particular to a signal transmission structure and a signal wiring harness.

Background technique

The signal wire harness is composed of a terminal block, a terminal group, a signal wire group, stuffing cotton and a protective sleeve. The signal wire group and stuffing cotton are covered by a protective sleeve to form a signal wire harness. One end of the signal wire group is plugged into the device through the terminal block. Internally, the other end of the signal line group is connected to the corresponding port through the terminal group.

However, the preparation of traditional signal wire harnesses involves the step of trimming the wires. After the wire trimming is completed, some of the filled cotton wires of the signal wires remain on the end face of the end of the protective sleeve away from the terminal block, so a second trimming is required. However, the end face of the end of the protective sleeve away from the terminal base is exposed to the air, and because the filling cotton layer is water-absorbent, it also makes the filling cotton layer easy to absorb water, causing water to enter the signal line group, resulting in a short circuit. .

Therefore, how to prevent water from entering the signal line group without secondary trimming is an urgent problem that needs to be solved.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art and provide a signal transmission structure and signal wire harness that do not require secondary trimming and can prevent water from entering the signal wire group.

The purpose of this utility model is achieved through the following technical solutions:

A signal transmission structure includes a connecting component and a plurality of signal line groups. The plurality of signal line groups are connected to the connecting component. The connecting component includes a connecting end base and a plurality of connecting end pieces. Each of the The signal wire set includes an insulating protective sheath, a cotton layer filler and a plurality of signal wire cores. One end of the plurality of signal wire cores is connected to the connection terminal base, and the other end of each two signal wire cores is connected to The corresponding connecting terminal piece is connected, the insulating protective sheath covers a plurality of the signal wire cores, and the cotton layer filler is filled in the insulating protective sheath;

The cotton layer filling piece has a plurality of exposed cotton threads, and the multiple exposed cotton threads are located at one end of the insulating protective sheath away from the connection terminal base;

The signal transmission structure also includes a plurality of waterproof components. Each of the waterproof components includes a waterproof protective sleeve and a waterproof filling glue layer. Each of the waterproof protective sleeves is set on a corresponding one of the insulating protective sleeves away from the connection end. At one end of the seat, the waterproof protective sheath and the insulating protective sheath form a filling area, and the waterproof filling glue layer is filled in the filling area, so that the waterproof filling glue layer and the waterproof protective sheath are respectively , the insulating protective sheath, the plurality of exposed cotton wires and the plurality of signal wire cores are bonded.

In one embodiment, the signal transmission structure further includes a plurality of marking tube sleeves, and each of the marking tube sleeves is tightened to a corresponding one of the signal wire cores.

In one embodiment, the number of the signal line groups is two, which are a first signal line group and a second signal line group.

In one embodiment, the first signal wire group includes a first insulating protective sheath, a first cotton layer filler and four first signal wire cores, one end of each of the four first signal wire cores is connected to the The terminal block is connected, and the other end of each two first signal wire cores is connected to a corresponding one of the connecting terminal pieces, and the first insulating protective sheath covers four of the first signal wire cores, so The first cotton layer filling piece is filled in the first insulating protective cover. The first cotton layer filling piece has a plurality of first exposed cotton threads, and the plurality of first exposed cotton threads are located in the first insulating protective cover. The sleeve is away from the end of the connecting end base.

In one embodiment, the second signal wire group includes a second insulating protective sheath, a second cotton layer filler and two second signal wire cores. One end of the two second signal wire cores is connected to the second signal wire core. The connection terminal blocks are connected, the other ends of the two second signal wire cores are connected to a corresponding one of the connection terminal pieces, and the second insulating protective sheath covers the two second signal wire cores, The second cotton layer filling piece is filled in the second insulating protective sheath. The second cotton layer filling piece has a plurality of second exposed cotton lines, and the plurality of second exposed cotton lines are located on the first insulating cover. The protective cover is away from the end of the connecting terminal base.

In one embodiment, the number of the waterproof components is two, which are a first waterproof component and a second waterproof component respectively.

In one embodiment, the first waterproof component includes a first waterproof protective sleeve and a first waterproof filling glue layer, and the first waterproof protective sleeve is placed on the first insulating protective sleeve away from the connection terminal base. At one end, the first waterproof protective cover and the first insulating protective cover form a first filling area, and the first waterproof filling glue layer is filled in the first filling area to make the first waterproof protective cover. The filling glue layer is respectively bonded to the first waterproof protective cover, the first insulating protective cover, the plurality of first exposed cotton wires and the four first signal wire cores.

In one embodiment, the second waterproof component includes a second waterproof protective sleeve and a second waterproof filling glue layer, and the second waterproof protective sleeve is placed on the second insulating protective sleeve away from the connection terminal base. At one end, the second waterproof protective sheath and the second insulating protective sheath form a second filling area, and the second waterproof filling glue layer is filled in the second filling area to make the second waterproof protective cover The filling glue layer is bonded to the second waterproof protective cover, the second insulating protective cover, the plurality of second exposed cotton wires and the two second signal wire cores respectively.

In one embodiment, the second signal line group is further provided with a first signal extension wire core and a second signal extension wire core. One end of the first signal extension wire core is connected to one of the second signal wire cores. connection, one end of the second signal extension wire core is connected to the other second signal wire core, and the other end of the first signal extension wire core and the other end of the second signal extension wire core are both connected to a The connecting end piece is connected, and the marking tube sleeve is tightened on the first signal extension wire core and the second signal extension wire core.

A signal wiring harness includes the signal transmission structure described in any of the above embodiments.

Compared with the existing technology, the present utility model has at least the following advantages:

The signal transmission structure of this application is first provided with a waterproof protective sleeve and a waterproof filling glue layer, and each waterproof protective sleeve is set on one end of a corresponding insulating protective sleeve far away from the connection terminal base, that is, the waterproof protective sleeve is set on the insulating protective sleeve. One end of the cover is exposed to the air, so that multiple exposed cotton threads are covered in the waterproof protective cover. Secondly, a filling area is surrounded by the waterproof protective cover and the insulating protective cover, that is, the area where the waterproof protective cover is not covered by the insulating protective cover is the filling area. Finally, the waterproof filling glue layer is filled in the filling area, so that the waterproof filling glue layer is bonded to the waterproof protective sleeve, the insulating protective sleeve, the exposed cotton wire and the signal wire core respectively, that is, the end face of the waterproof protective sleeve is The waterproof filling glue layer is sealed, and the multiple exposed cotton wires are sealed in the waterproof protective sleeve by the waterproof filling glue layer, which will not affect the normal use of the multiple signal wire cores. Therefore, there is no need for secondary trimming and it can prevent water from entering the signal line group, thereby effectively improving the production efficiency and waterproof performance of the signal transmission structure.

Description of drawings

In order to explain the technical solutions of the embodiments of the present utility model more clearly, the drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the utility model. Therefore, it should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a signal transmission structure in an embodiment;

Figure 2 is a partial structural cross-sectional view of the signal transmission structure shown in Figure 1;

Figure 3 is a partial structural schematic diagram of the signal transmission structure shown in Figure 1;

Figure 4 is an enlarged schematic diagram of position A of the signal transmission structure shown in Figure 1;

Figure 5 is a partial structural cross-sectional view of the signal transmission structure shown in Figure 4;

Figure 6 is a partial structural schematic diagram of the signal transmission structure shown in Figure 4;

Figure 7 is an enlarged schematic diagram of position B of the signal transmission structure shown in Figure 1;

Figure 8 is a partial structural cross-sectional view of the signal transmission structure shown in Figure 7;

FIG. 9 is a partial structural diagram of the signal transmission structure shown in FIG. 7 .

Detailed ways

In order to facilitate understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a thorough and comprehensive understanding of the disclosure of the present invention.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present application provides a signal transmission structure including a connecting component and a plurality of signal wire groups. The multiple signal wire groups are connected to the connecting component. The connecting component includes a connecting terminal base and a plurality of connecting terminal pieces. Each signal wire group includes insulation protection. sleeve, cotton layer filler and multiple signal wire cores. One end of the multiple signal wire cores is connected to the connecting terminal block, and the other end of each two signal wire cores is connected to a corresponding connecting terminal piece. The insulation protection sleeve is Covered on multiple signal wire cores, the cotton layer filler is filled in the insulating protective sheath. The cotton layer filling piece has a plurality of exposed cotton wires, and the multiple exposed cotton wires are located at one end of the insulating protective sleeve away from the connection terminal base. The signal transmission structure also includes a plurality of waterproof components. Each waterproof component includes a waterproof protective sleeve and a waterproof filling glue layer. Each waterproof protective sleeve is set on an end of a corresponding insulating protective sleeve away from the connection terminal base. The waterproof protective sleeve and the insulating protective sleeve The cover is surrounded by a filling area, and the waterproof filling adhesive layer is filled in the filling area, so that the waterproof filling adhesive layer is bonded to the waterproof protective cover, the insulating protective cover, a plurality of exposed cotton wires and a plurality of signal wire cores respectively.

Please refer to Figures 1 to 3. In order to better understand the signal transmission structure 10 of the present application, the signal transmission structure 10 is further explained below:

The signal transmission structure 10 of one embodiment includes a connection assembly 100 and a plurality of signal line groups 200. The plurality of signal line groups 200 are connected to the connection assembly 100. The connection assembly 100 includes a connection end base 110 and a plurality of connection end pieces 120, each of which A signal wire set 200 includes an insulating protective sheath 210, a cotton layer filler 220 and a plurality of signal wire cores 230. One end of the plurality of signal wire cores 230 is connected to the connection terminal base 110, and the other end of each two signal wire cores 230 They are all connected to a corresponding connecting terminal piece 120 . The insulating protective sheath 210 covers the plurality of signal wire cores 230 , and the cotton layer filler 220 is filled in the insulating protective sheath 210 . The cotton layer filler 220 has a plurality of exposed cotton wires 2210 , and the multiple exposed cotton wires 2210 are located at one end of the insulating protective sleeve 210 away from the connection terminal base 110 . The signal transmission structure 10 also includes a plurality of waterproof components 300. Each waterproof component 300 includes a waterproof protective sleeve 310 and a waterproof filling glue layer 320. Each waterproof protective sleeve 310 is set on a corresponding insulating protective sleeve 210 away from the connection terminal base 110. At one end, the waterproof protective cover 310 and the insulating protective cover 210 form a filling area 302, and the waterproof filling glue layer 320 is filled in the filling area 302, so that the waterproof filling glue layer 320 is connected to the waterproof protective case 310, the insulating protective case 210, and Multiple exposed cotton wires 2210 and multiple signal wire cores 230 are bonded.

In this embodiment, firstly, a waterproof protective sleeve 310 and a waterproof filling glue layer 320 are provided, and each waterproof protective sleeve 310 is set on an end of the connection terminal base 110 far away from the corresponding insulating protective sleeve 210, that is, the waterproof protective sleeve 310 is provided with a waterproof protective sleeve 310. The cover 310 is set on one end of the insulating protective cover 210 that is exposed to the air, so that the multiple exposed cotton wires 2210 are covered in the waterproof protective cover 310 . Secondly, the waterproof protective cover 310 and the insulating protective cover 210 are surrounded by a filling area 302 , that is, the area where the waterproof protective cover 310 is not covered by the insulating protective cover 210 is the filling area 302 . Finally, the waterproof filling glue layer 320 is filled in the filling area 302, so that the waterproof filling glue layer 320 is bonded to the waterproof protective cover 310, the insulating protective cover 210, the exposed cotton wire 2210 and the signal wire core 230 respectively. That is, the end face of the waterproof protective sleeve 310 is sealed by the waterproof filling glue layer 320, and the multiple exposed cotton wires 2210 are sealed in the waterproof protective sleeve 310 by the waterproof filling glue layer 320, which will not affect the normal operation of the multiple signal wire cores 230. use. Therefore, there is no need for secondary trimming and water intrusion inside the signal wire group 200 can be prevented, thereby effectively improving the production efficiency and waterproof performance of the signal transmission structure 10 .

As shown in FIG. 1 , in one embodiment, the signal transmission structure 10 further includes a plurality of marking tube sleeves 400 , and each marking tube sleeve 400 is tightened to a corresponding signal wire core 230 . It can be understood that by providing the marking sleeve 400, the corresponding signal wire core 230 can be distinguished to facilitate subsequent assembly.

As shown in FIG. 1 , in one embodiment, the number of signal line groups 200 is two, which are a first signal line group 200a and a second signal line group 200b. It can be understood that by providing the first signal line group 200a and the second signal line group 200b, different ports can be connected to achieve multi-path signal transmission.

As shown in Figures 1, 4 to 6, in one embodiment, the first signal wire group 200a includes a first insulating protective sheath 210a, a first cotton layer filler 220a and four first signal wire cores 230a. Four One end of the first signal wire core 230a is connected to the connection terminal base 110, and the other end of each two first signal wire cores 230a is connected to a corresponding connection terminal piece 120. The first insulating protective sheath 210a is covered with four The first signal wire core 230a and the first cotton layer filling member 220a are filled in the first insulating protective cover 210a. The first cotton layer filling member 220a has a plurality of first exposed cotton wires 2210a. The plurality of first exposed cotton wires 2210a are located on the first insulating protective sleeve 210a. An insulating protective sleeve 210a is located away from one end of the connection terminal base 110 .

As shown in Figures 1, 7 to 9, in one embodiment, the second signal wire group 200b includes a second insulating protective sleeve 210b, a second cotton layer filler 220b and two second signal wire cores 230b. One end of the two second signal wire cores 230b is connected to the connection terminal base 110, and the other end of the two second signal wire cores 230b is connected to a corresponding connection terminal piece 120. The second insulating protective sheath 210b covers the two second signal wire cores 230b. a second signal wire core 230b, a second cotton layer filler 220b filled in the second insulating protective cover 210b, the second cotton layer filler 220b has a plurality of second exposed cotton wires 2210b, and the plurality of second exposed cotton wires 2210b are located The first insulating protective sleeve 210a is away from an end of the connection terminal base 110 .

As shown in Figures 4 and 7, in one embodiment, the number of waterproof components 300 is two, which are a first waterproof component 300a and a second waterproof component 300b respectively. It can be understood that since the number of signal line groups 200 is two, the number of waterproof components 300 is also two, thereby ensuring the waterproof performance of the signal transmission structure 10 .

As shown in Figures 4 and 6, in one embodiment, the first waterproof component 300a includes a first waterproof protective cover 310a and a first waterproof filling glue layer 320a. The first waterproof protective cover 310a is set on the first insulating protection layer. The end of the sleeve away from the connection terminal base 110, the first waterproof protective sleeve 310a and the first insulating protective sleeve 210a surround a first filling area 302a, and the first waterproof filling glue layer 320a is filled in the first filling area 302a, so that the first filling area 302a A waterproof filling glue layer 320a is bonded to the first waterproof protective cover 310a, the first insulating protective cover 210a, the plurality of first exposed cotton wires 2210a and the four first signal wire cores 230a respectively. It can be understood that this effectively improves the waterproof performance of the first signal line group 200a.

As shown in Figures 7 and 9, in one embodiment, the second waterproof component 300b includes a second waterproof protective cover 310b and a second waterproof filling glue layer 320b. The second waterproof protective cover 310b is set on the second insulating protection layer. The end of the sleeve 210b away from the connection terminal base 110, the second waterproof protective sleeve 310b and the second insulating protective sleeve 210b form a second filling area 302b, and the second waterproof filling glue layer 320b is filled in the second filling area 302b, so that The second waterproof filling glue layer 320b is bonded to the second waterproof protective cover 310b, the second insulating protective cover 210b, the plurality of second exposed cotton wires 2210b and the two second signal wire cores 230b respectively. It can be understood that this effectively improves the waterproof performance of the second signal line group 200b.

As shown in Figure 1, in one embodiment, the second signal line group 200b is also provided with a first signal extension wire core 240b and a second signal extension wire core 250b. One end of the first signal extension wire core 240b is connected to a first signal extension wire core 240b. The two signal wire cores 230b are connected, one end of the second signal extension wire core 250b is connected to another second signal wire core 230b, the other end of the first signal extension wire core 240b and the other end of the second signal extension wire core 250b are both connected to A connecting end piece 120 is connected, and the first signal extension wire core 240b and the second signal extension wire core 250b are both fastened with a marking sleeve 400. It can be understood that by providing the extension wire core, the second signal wire group 200b can be connected to more ports.

This application also provides a signal wiring harness, including the signal transmission structure described in any of the above embodiments.

In this embodiment, firstly, a waterproof protective sleeve and a waterproof filling glue layer are provided, and each waterproof protective sleeve is placed on one end of the corresponding connecting terminal base away from the corresponding insulating protective sleeve. That is, the waterproof protective sleeve is placed on the insulating protective sleeve. One end is exposed to the air, so that multiple exposed cotton threads are covered in a waterproof protective cover. Secondly, a filling area is surrounded by the waterproof protective cover and the insulating protective cover, that is, the area where the waterproof protective cover is not covered by the insulating protective cover is the filling area. Finally, the waterproof filling glue layer is filled in the filling area, so that the waterproof filling glue layer is bonded to the waterproof protective sleeve, the insulating protective sleeve, the exposed cotton wire and the signal wire core respectively, that is, the end face of the waterproof protective sleeve is The waterproof filling glue layer is sealed, and the multiple exposed cotton wires are sealed in the waterproof protective sleeve by the waterproof filling glue layer, which will not affect the normal use of the multiple signal wire cores. Therefore, there is no need for secondary trimming and it can prevent water from entering the signal wire group, thereby effectively improving the production efficiency and waterproof performance of the signal wire harness.

Compared with the existing technology, the present utility model has at least the following advantages:

The signal transmission structure of this application is first provided with a waterproof protective sleeve and a waterproof filling glue layer, and each waterproof protective sleeve is set on one end of a corresponding insulating protective sleeve far away from the connection terminal base, that is, the waterproof protective sleeve is set on the insulating protective sleeve. One end of the cover is exposed to the air, so that multiple exposed cotton threads are covered in the waterproof protective cover. Secondly, a filling area is surrounded by the waterproof protective cover and the insulating protective cover, that is, the area where the waterproof protective cover is not covered by the insulating protective cover is the filling area. Finally, the waterproof filling glue layer is filled in the filling area, so that the waterproof filling glue layer is bonded to the waterproof protective sleeve, the insulating protective sleeve, the exposed cotton wire and the signal wire core respectively, that is, the end face of the waterproof protective sleeve is The waterproof filling glue layer is sealed, and the multiple exposed cotton wires are sealed in the waterproof protective sleeve by the waterproof filling glue layer, which will not affect the normal use of the multiple signal wire cores. Therefore, there is no need for secondary trimming and it can prevent water from entering the signal line group, thereby effectively improving the production efficiency and waterproof performance of the signal transmission structure.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims (10)

1. A signal transmission structure, including a connecting component and a plurality of signal line groups, a plurality of the signal line groups are connected to the connecting component, the connecting component includes a connecting terminal base and a plurality of connecting terminal pieces, each The signal wire set includes an insulating protective sheath, a cotton layer filler and a plurality of signal wire cores. One end of the plurality of signal wire cores is connected to the connection terminal base, and the other end of each two signal wire cores is They are all connected to a corresponding one of the connecting terminal pieces, the insulating protective sheath covers a plurality of the signal wire cores, and the cotton layer filler is filled in the insulating protective sheath, which is characterized in that: The cotton layer filling piece has a plurality of exposed cotton threads, and the multiple exposed cotton threads are located at one end of the insulating protective sheath away from the connection terminal base; The signal transmission structure also includes a plurality of waterproof components. Each of the waterproof components includes a waterproof protective sleeve and a waterproof filling glue layer. Each of the waterproof protective sleeves is set on a corresponding one of the insulating protective sleeves away from the connection end. At one end of the seat, the waterproof protective sheath and the insulating protective sheath form a filling area, and the waterproof filling glue layer is filled in the filling area, so that the waterproof filling glue layer and the waterproof protective sheath are respectively , the insulating protective sheath, the plurality of exposed cotton wires and the plurality of signal wire cores are bonded. 2. The signal transmission structure according to claim 1, characterized in that the signal transmission structure further includes a plurality of marking tube sleeves, and each of the marking tube sleeves is tightened to a corresponding one of the signal wire cores. 3. The signal transmission structure according to claim 2, characterized in that the number of the signal line groups is two, which are a first signal line group and a second signal line group respectively. 4. The signal transmission structure according to claim 3, characterized in that the first signal wire group includes a first insulating protective sheath, a first cotton layer filler and four first signal wire cores, and the four first signal wire cores One end of the signal wire core is connected to the connection terminal base, the other end of each two first signal wire cores is connected to a corresponding one of the connection terminal pieces, and the first insulating protective sheath is wrapped around four the first signal wire core, the first cotton layer filler is filled in the first insulating protective sheath, the first cotton layer filler has a plurality of first exposed cotton wires, and the plurality of first exposed cotton wires are The exposed cotton wires are located at an end of the first insulating protective sheath away from the connection terminal base. 5. The signal transmission structure according to claim 4, characterized in that the second signal wire group includes a second insulating protective sheath, a second cotton layer filler and two second signal wire cores, and the two second signal wire cores include One end of the second signal wire core is connected to the connection terminal base, the other ends of the two second signal wire cores are connected to the corresponding one of the connection terminal pieces, and the second insulating protective sheath is covered with Two of the second signal wire cores, the second cotton layer filler is filled in the second insulating protective sheath, the second cotton layer filler has a plurality of second exposed cotton wires, and a plurality of the second exposed cotton wires The two exposed cotton wires are located at one end of the first insulating protective sheath away from the connection terminal base. 6. The signal transmission structure according to claim 5, characterized in that the number of the waterproof components is two, which are a first waterproof component and a second waterproof component respectively. 7. The signal transmission structure according to claim 6, wherein the first waterproof component includes a first waterproof protective sleeve and a first waterproof filling glue layer, and the first waterproof protective sleeve is set on the first waterproof protective sleeve. An end of the insulating protective sheath away from the connection terminal base, the first waterproof protective sheath and the first insulating protective sheath form a first filling area, and the first waterproof filling glue layer is filled in the first filling area. area, so that the first waterproof filling glue layer is bonded to the first waterproof protective cover, the first insulating protective cover, the plurality of first exposed cotton wires and the four first signal wire cores respectively. . 8. The signal transmission structure according to claim 7, wherein the second waterproof component includes a second waterproof protective sleeve and a second waterproof filling glue layer, and the second waterproof protective sleeve is set on the second waterproof protective sleeve. An end of the insulating protective sheath away from the connection terminal base, the second waterproof protective sheath and the second insulating protective sheath form a second filling area, and the second waterproof filling glue layer is filled in the second filling area. area, so that the second waterproof filling glue layer is respectively adhered to the second waterproof protective cover, the second insulating protective cover, the plurality of second exposed cotton wires and the two second signal wire cores. catch. 9. The signal transmission structure according to claim 5, wherein the second signal line group is further provided with a first signal extension wire core and a second signal extension wire core, and the first signal extension wire core is One end is connected to one of the second signal wire cores, one end of the second signal extension wire core is connected to the other second signal wire core, and the other end of the first signal extension wire core is connected to the second signal wire core. The other ends of the signal extension wire cores are connected to one of the connecting end pieces, and the marking sleeves are tightened on the first signal extension wire core and the second signal extension wire core. 10. A signal wiring harness, characterized by comprising the signal transmission structure according to any one of claims 1-9.