A hand-off detection pad and a car steering wheel

Abstract

The present application discloses a hand-off detection pad and a car steering wheel, which relate to the technical field of car steering wheels. The hand-off detection pad comprises: a flexible cloth conductive layer and an electrical connection component attached to a substrate; a welding area connected to the electrical connection component is formed on the flexible cloth conductive layer; the electrical connection component comprises: a wiring structure body, the wiring structure body is arranged at one end of the electrical connection component connected to the flexible cloth conductive layer, and the wiring structure body is welded to the welding area to achieve the connection between the flexible cloth conductive layer and the electrical connection component. The hand-off detection pad assists in melting solder through the wiring structure body, thereby avoiding direct contact between the welding equipment and the solder, and ensuring the welding cleanliness and welding quality.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of automobile steering wheels, and in particular to a hands-off detection pad and an automobile steering wheel. Background Art

[0002] In order to enable the steering wheel to detect whether the driver is holding the steering wheel and the position of the hand on the steering wheel, a pad structure with a conductive sensor is wrapped around the steering wheel. Capacitance is generated between the human hand and the pad structure arranged in different areas, thereby realizing the function of judging the position of the human hand and whether there is a hand holding the steering wheel.

[0003] Currently, the Hand Off Detection (HOD) product uses a polyester base fabric. A special process is used to attach metal (such as nickel or copper-nickel) to the surface of the base fabric as a sensing layer or shielding layer conductive material. The subsequent electrical signal transmission function is then achieved by welding the wire to the conductive fabric.

[0004] However, currently when the wire is directly soldered to the metal cloth, the direct contact between the soldering iron and the metal cloth will cause the end face of the soldering iron tip to absorb a portion of the solder, affecting the reliability of welding. If the amount of solder is increased, the flux in the solder in the welding area may also diffuse seriously, affecting the appearance and the adhesion effect of the metal cloth and other materials, and reducing the reliability of welding. For this reason, we propose a hands-off detection pad. Utility Model Content

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide a hands-off detection pad and a car steering wheel.

[0006] In a first aspect, the present application provides a hand-off detection pad, the hand-off detection pad comprising: a flexible cloth conductive layer and an electrical connection component attached to a substrate; a welding area connected to the electrical connection component is formed on the flexible cloth conductive layer;

[0007] The electrical connection component includes: a wiring structure body, which is arranged at one end of the electrical connection component connected to the flexible cloth conductive layer, and the wiring structure body realizes the connection between the flexible cloth conductive layer and the electrical connection component by welding with the welding area.

[0008] According to the technical solution provided in the present application, a welding coating is provided on the welding area, and the welding coating is used to assist the connection between the electrical connection component and the flexible cloth conductive layer.

[0009] According to the technical solution provided in the present application, the electrical connection component has a conductive portion at one end close to the flexible cloth conductive layer, and the wiring structure body is crimped and fixed to the conductive portion.

[0010] According to the technical solution provided in the present application, the wiring structure body includes: a first connecting part and a first welding part that cooperate with each other; the first connecting part is used to connect with the conductive part; the first welding part is located at one end of the first connecting part away from the conductive part, and is used to connect with the flexible cloth conductive layer.

[0011] According to the technical solution provided in the present application, the first connecting portion and the first welding portion are an integrally formed metal structure.

[0012] According to the technical solution provided by the present application, the first welding portion is used to contact with the welding equipment and receive heat from the welding equipment;

[0013] The first welding portion is arranged at the welding paint. During welding, the welding paint is melted by heating the first welding portion to achieve connection between the flexible cloth conductive layer and the electrical connection component.

[0014] According to the technical solution provided in the present application, at least one first opening is provided on the first welding portion, and the first opening can be provided inside the first welding portion or at an edge of the first welding portion.

[0015] According to the technical solution provided by the present application, the first connecting portion includes: a first fixing portion and a second fixing portion;

[0016] The first fixing portion is used to be connected to the insulating outer layer of the conductive portion, and the second fixing portion is used to be connected to the conductive copper wire bundle of the conductive portion.

[0017] According to the technical solution provided in the present application, the first fixing portion includes: a first fixing section and a first covering section arranged on both sides of the first fixing section; the first fixing section is used to contact the insulating outer layer, and the first covering section is used to cover the insulating outer layer;

[0018] The second fixing portion includes: a second fixing section and second covering sections arranged on both sides of the second fixing section; the second fixing section is used to contact the conductive copper wire bundle, and the second covering section is used to cover the conductive copper wire bundle.

[0019] In a second aspect, the present application provides a car steering wheel, which is applied with the above-mentioned hand-off detection pad, and also includes: a steering wheel frame and the hand-off detection pad installed on the steering wheel frame; the flexible cloth conductive layer and the electrical connection component in the hand-off detection pad are connected through the wiring structure body.

[0020] In summary, the present technical solution specifically discloses a hand-off detection pad and a car steering wheel; wherein, the hand-off detection pad comprises: a flexible cloth conductive layer and an electrical connection component attached to a substrate; a welding area connected to the electrical connection component is formed on the flexible cloth conductive layer; the electrical connection component comprises: a wiring structure body, the wiring structure body is arranged at one end of the electrical connection component connected to the flexible cloth conductive layer, and the wiring structure body realizes the connection between the flexible cloth conductive layer and the electrical connection component by welding with the welding area.

[0021] Currently, when the wire is directly soldered to the metal cloth, whether the soldering iron is directly in contact with the metal cloth or the amount of solder is increased, different disadvantages will be brought about. Therefore, in order to improve the welding reliability while not affecting the appearance and the adhesion effect of the metal cloth and other materials, the present application proposes a hand-off detection pad body that completes the connection between the flexible cloth conductive layer and the electrical connection component by welding the wiring structure body provided on the electrical connection component and the welding area. This effectively avoids direct contact between the soldering iron and the solder during subsequent welding, thereby ensuring the welding cleanliness and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 The figure is a schematic diagram of the welding assembly of a hands-off detection pad.

[0024] Figure 2 The figure is a schematic diagram of the welding working condition of a hands-free detection pad.

[0025] Figure 3 The figure is a schematic diagram showing the connection between the wiring structure body and the electrical connection assembly of the first type of hands-off detection pad.

[0026] Figure 4 The present invention is a structural schematic diagram of a wiring structure body in a hands-off detection pad.

[0027] Figure 5 The figure is a connection diagram of the wiring structure body and the electrical connection assembly of the second type of hand-off detection pad.

[0028] Figure 6 The figure is a schematic diagram showing the connection between the wiring structure body and the electrical connection assembly of the third type of hand-off detection pad.

[0029] Figure 7 The fourth embodiment is a schematic diagram of the connection between the wiring structure body and the electrical connection assembly of the hands-off detection pad.

[0030] Figure 8 The figure is a schematic diagram of the overall structure of a hands-off detection pad.

[0031] Fig. 9 This is an enlarged schematic diagram of the structure at location A of a hand-off detection pad.

[0032] Fig.10 The figure is a simplified structural diagram of a hands-off detection pad.

[0033] Fig.11 The present invention is a schematic diagram of the structure of a car steering wheel.

[0034] Fig.12 This is a schematic diagram of the welding condition of the original hand-off detection pad.

[0035] Numbers in the figure: 1. Hand-off detection pad; 11. Flexible cloth conductive layer; 12. Welding area; 13. Welding paint; 14. Electrical connection component; 15. Insulating substrate; 16. Double-sided tape; 17. Polyester thread; 18. Metal wire; 19. Conductive structure; 2. Wiring structure body; 21. First connecting part; 22. First welding part; 23. Opening; 24. First fixing part; 241. First fixing section; 242. First covering section; 25. Second fixing part; 251. Second fixing section; 252. Second covering section; 3. Welding equipment; 4. Conductive part; 41. Insulating outer layer; 42. Conductive copper wire bundle; 5. Steering wheel frame; 6. Connector. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] Example 1

[0039] In order to clearly describe the present technical solution, the relevant technical background is first explained.

[0040] Hand Off Detection (HOD): used to detect whether the driver is holding the steering wheel and the position of the hand on the steering wheel. The design principle of the hand off detection pad is generally to wrap a pad structure with a conductive sensor on the steering wheel, and generate capacitance between the human hand and the pad structure arranged in different areas, thereby realizing the function of judging the position of the human hand and whether there is a human hand holding the steering wheel.

[0041] Currently, HOD products use a polyester base fabric, and a metal (such as nickel or copper-nickel) is attached to the surface of the base fabric using a special process as a sensing layer or a shielding layer conductive material (also known as metal cloth, collectively referred to as a flexible cloth conductive layer in this application), which is then connected to the connector 6 through a wire to achieve an electrical signal transmission function, wherein the flexible cloth conductive layer is directly connected to the wire by soldering.

[0042] Please refer to Figure 1 The present embodiment shows a schematic diagram of a hand-off detection pad body, wherein the hand-off detection pad body 1 comprises: a flexible cloth conductive layer 11 and an electrical connection component 14 attached to a substrate; a welding area 12 connected to the electrical connection component 14 is formed on the flexible cloth conductive layer 11;

[0043] The electrical connection component 14 includes: a wiring structure body 2, which is arranged at one end of the electrical connection component 14 connected to the flexible cloth conductive layer 11, and the wiring structure body 2 is welded to the welding area 12 to achieve the connection between the flexible cloth conductive layer 11 and the electrical connection component 14.

[0044] Combination Fig.12 As can be seen from the above introduction to the scheme, the flexible cloth conductive layer 11 and the wire need to be welded. However, due to the high integration of electrical components inside the steering wheel, the space left for the wiring area of ​​the HOD pad is limited, so the following difficulties are likely to occur during the welding process: (1) Welding cleanliness and low welding quality: Currently, the wire is directly welded to the flexible cloth conductive layer. It is necessary to position the wire on the flexible cloth conductive layer so that the flexible cloth conductive layer and the wire are in contact. Then, a fixed amount of solder is added to the surface of the wire. Then, the soldering iron of the welding equipment is pressed onto the solder to melt it, and the flexible cloth conductive layer and the wire are reliably welded. (2) Since the solder contains flux, the flux in the welding area will be seriously diffused, affecting the appearance. In addition, the flux on the surface of the flexible cloth conductive layer belongs to the grease type, which will affect the adhesion effect of the flexible cloth conductive layer and the other materials. (3) The direct contact of the soldering iron with the flexible cloth conductive layer will cause the end face of the soldering iron tip to absorb part of the solder, affecting the welding reliability.

[0045] In view of this, see Figure 8-Figure 10As shown, in this embodiment, the flexible cloth conductive layer 11 and the electrical connection component 14 are attached to the insulating substrate 15, and then the flexible cloth conductive layer 11 and the insulating substrate 15 can be pasted together by double-sided adhesive 16 to form an integrated structure (the hand-off detection pad body 1 also includes a metal wire 18 fixed to the insulating substrate 15 away from the flexible cloth conductive layer 11 by a polyester thread 17 and a conductive structure 19 connected to the metal wire 18, which will not be described in detail here), and the flexible cloth conductive layer 11 and the electrical connection component 14 are connected by the wiring structure body 2. The wiring structure body 2 can be arranged at one end where the electrical connection component 14 (containing a wire) is connected to the flexible cloth conductive layer 11, so as to contact with an external welding device 3 (for example, a high-temperature welding iron tip), and utilize heat conduction to transfer the heat emitted from the welding device 3 to the welding area 12 formed on the flexible cloth conductive layer 11, so that the wiring structure body 2 can achieve the connection between the flexible cloth conductive layer 11 and the electrical connection component 14 through welding with the welding area 12, and then the wire is connected to the connector 6 to complete the electrical signal transmission function of the hand-off detection pad.

[0046] It should be noted that the setting of the welding area 12 in the hand-off detection pad body needs to be determined in advance by a technician. After the welding area 12 is confirmed, the position of the corresponding electrical connection component 14 and the wiring structure body 2 will also be determined.

[0047] In a preferred embodiment, a welding coating 13 is provided on one side of the welding area 12 close to the wiring structure body 2 , and the welding coating 13 is used to assist in welding the electrical connection component 14 to the flexible cloth conductive layer 11 .

[0048] The welding coating 13 can be selected to be solder, and its function is to weld the electrical connection component 14 and the flexible cloth conductive layer 11 together to form a reliable electrical path, wherein the solder can be used in conjunction with flux to further improve the welding quality.

[0049] In a preferred embodiment, see Figure 1 and Figure 2 As shown, the electrical connection component 14 has a conductive part 4 at one end close to the flexible cloth conductive layer 11, and the wiring structure body 2 and the conductive part 4 are crimped and fixed; the crimping and fixing method can not only make the connection between the wiring structure body 2 and the conductive part 4 convenient, but also ensure the tightness of the connection between the two. In the actual crimping process, the corresponding crimping mold can be used to complete the crimping.

[0050] In a preferred embodiment, the wiring structure body 2 includes: a first connecting portion 21 and a first welding portion 22 that cooperate with each other;

[0051] The first connection portion 21 is used to connect with the conductive portion 4 of the electrical connection component 14 ; the first welding portion 22 is located at one end of the first connection portion 21 away from the conductive portion 4 , and is used to connect with the flexible cloth conductive layer 11 .

[0052] It should be noted that the first connecting portion 21 and the first welding portion 22 are used to realize the welding of the conductive portion 4 and the flexible cloth conductive layer 11. Preferably, the first connecting portion 21 and the first welding portion 22 are an integrally formed metal structure. Such a structural selection can enable the wiring structure body 2 to more quickly conduct the heat released by the external welding equipment 3 to the welding coating 13 set on the welding area 12, thereby accelerating the welding of the electrical connection component 14 and the flexible cloth conductive layer 11.

[0053] In a preferred embodiment, see Figure 2 and Figure 3 As shown, the first welding portion 22 is used to contact with the welding device 3 and receive heat from the welding device 3;

[0054] The first welding portion 22 is disposed at the welding coating 13 . During welding, the welding coating 13 is melted by heating the first welding portion 22 , so as to achieve connection between the flexible cloth conductive layer 11 and the electrical connection component 14 .

[0055] Specifically, the first welding part 22 can replace the welding coating 13 to contact the welding equipment 3, so during welding, the corresponding heating end of the welding equipment 3 can be contacted with the first welding part 22, and the first welding part 22 can be used for heat conduction to transfer heat to the welding coating 13, thereby melting the welding coating 13.

[0056] Moreover, after the wiring structure body 2 is crimped and fixed with the conductive part 4 , its first welding part 22 will be exactly located in the welding area 12 , so that the first welding part 22 and the welding device 3 conduct heat to complete the welding of the flexible cloth conductive layer 11 and the electrical connection component 14 .

[0057] Combine the following Figure 3-Figure 7 The structural form of the first welding portion 22 is illustrated by way of example. First, the shape of the first welding portion 22 is not limited and may be circular, rectangular, triangular or elliptical, etc. However, it is necessary to ensure that the final specifications of the first welding portion 22 can meet the connection requirements and have sufficient contact area with the welding device 3. For details, see Figure 5 and Figure 6 , the first welding portion 22 can be in a disc-shaped and rectangular state.

[0058] On the basis of the above, in a preferred embodiment, at least one first opening 23 is formed on the first welding portion 22, and the first opening 23 can be provided inside the first welding portion 22 or at the edge of the first welding portion 22;

[0059] When multiple first openings 23 are provided, the multiple first openings 23 can be separately arranged inside and at the edge of the first welding part 22, or evenly arranged at the edge of the first welding part 22, or evenly arranged inside the first welding part 22, without any special limitation; the first openings 23 are used to assist the first welding part 22 in melting the welding coating 13.

[0060] Specifically, see Figure 3 As shown, if the first opening 23 is arranged inside the first welding part 22 in a disc shape (for example, the first opening 23 is arranged exactly at the center of the first welding part 22), the first welding part 22 is a circular ring structure; the circular ring structure can release the heat of the welding equipment 3 at the first opening 23, and then conduct the heat to the welding area 12 more quickly.

[0061] Further, see Figure 7 As shown, if the first opening 23 is set at the edge of the first welding part 22 in a disc shape, the first welding part 22 is a forked ring structure. At this time, the first opening 23 is also used to accelerate the heat release of the welding equipment 3 and assist the first welding part 22 to melt the welding coating 13.

[0062] Based on the above description, it can be known that the shape of the first welding part 22 can be selected according to actual needs, including but not limited to a circular ring structure, a rectangular structure, and a disc structure. At the same time, it should be noted that when a first opening 23 is opened on the first welding part 22, it is also necessary to ensure that the welding equipment 3 can contact the first welding part 22. The first opening 23 must not be too large, the welding equipment 3 cannot contact the first welding part 22, or the contact area is too small.

[0063] In a preferred embodiment, see Figure 3 , Figure 5-Figure 7 As shown, the first connecting portion 21 includes: a first fixing portion 24 and a second fixing portion 25;

[0064] The first fixing part 24 is used to connect to the insulating outer layer 41 of the conductive part 4, and the second fixing part 25 is used to connect to the conductive copper wire bundle 42 of the conductive part 4; wherein, the connection here can be understood as the aforementioned "crimping fixation" or other connection means, and the conductive part 4 here can be understood as a wire, which includes a conductive copper wire bundle 42 and an insulating outer layer 41 (PVC insulation skin) wrapped around the conductive copper wire bundle 42.

[0065] At the same time, there is no essential distinction between the first and second fixing parts 24 and 25, and both functions are to connect with the conductive part 4; accordingly, the first fixing part 24 is used to connect with the insulating outer layer 41 of the conductive part 4, and the specification of the first fixing part 24 will be larger than that of the second fixing part 25. At this time, the second fixing part 25 will also be arranged on the side of the first fixing part 24 that is closer to the conductive copper wire bundle 42, and then the second fixing part 25 is connected to the conductive copper wire bundle 42.

[0066] It should be explained that, in terms of the function of the first connecting portion 21, the first connecting portion 21 needs to be connected to the conductive portion 4, so the form of the first fixing portion 24 and the second fixing portion 25 includes but is not limited to the above forms, and can also be an integral metal sheet or other forms, mainly for the purpose of being able to connect to the conductive portion 4. In addition, in the actual process, whether the first fixing portion 24 and the second fixing portion 25 are accurately connected to the fixed position may also deviate, so there is no special limitation. For example, the first fixing portion 24 is relatively large in size, and after being connected to the insulating outer layer 41, part of it is also connected to the conductive copper wire bundle 42.

[0067] In a preferred embodiment, see Figure 4 As shown, the first fixing portion 24 includes: a first fixing section 241 and a first covering section 242 disposed on both sides of the first fixing section 241; the first fixing section 241 is used to contact the insulating outer layer 41, and the first covering section 242 is used to cover the insulating outer layer 41;

[0068] The second fixing portion 25 includes: a second fixing section 251 and second covering sections 252 disposed on both sides of the second fixing section 251 ; the second fixing section 251 is used to contact the conductive copper wire bundle 42 , and the second covering section 252 is used to cover the conductive copper wire bundle 42 .

[0069] See also Figure 4 As shown, the first fixed section 241 in the first fixed portion 24 is closer to a straight section than the first covering section 242 arranged on both sides thereof, so the first fixed section 241 can first contact the insulating outer layer 41, and then the two second covering sections 252 arranged in a bent shape and inclined on both sides of the first fixed section 241 can be bent toward the direction of the insulating outer layer 41, and then covered on the outside of the insulating outer layer 41; similarly, although the second fixed portion 25 is located outside the conductive copper wire bundle 42, its design principle is basically the same as that of the first fixed portion 24, and will not be repeated here.

[0070] It should be noted that the automated welding equipment 3 needs to be precisely positioned before welding is carried out, so there are high positional accuracy and dimensional requirements for the position and outer contour size of the wire; then the wire is easy to spread out after the insulating outer layer 41 is removed, which will also reduce the welding reliability, so the second fixing part 25 is designed to be covered on the outside of the conductive copper wire bundle 42 by the second fixing section 251 and the second covering section 252. When the number of conductive copper wire strands in the conductive part 4 is large and easy to spread, it can also play a role in fixing the conductive copper wire bundle 42 so that it can be accurately positioned during welding.

[0071] Example 2

[0072] See also Fig.11 As shown, an embodiment of the present application proposes a car steering wheel, which is applied with a hand-off detection pad of embodiment 1, and also includes: a steering wheel frame 5 and a hand-off detection pad 1 installed on the steering wheel frame 5; the flexible cloth conductive layer 11 and the electrical connection component 14 in the hand-off detection pad 1 are connected through a wiring structure body 2.

[0073] After the flexible cloth conductive layer 11 inside the hand-off detection pad 1 and the conductive part 4 that needs to be connected to the flexible cloth conductive layer 11 are welded through the wire structure body 2, the end of the conductive part 4 that is not connected to the flexible cloth conductive layer 11 is connected to the connector 6, and the connector 6 is electrically connected to the vehicle body power supply to complete the electrical signal transmission function of the hand-off detection pad 1. Then, when the driver's hand is holding the steering wheel and generates capacitance with the hand-off detection pad 1 arranged in different areas, the position of the human hand and whether there is a human hand holding the steering wheel of the car can be determined.

[0074] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A hands-off detection pad, characterized in that: The hand-off detection pad (1) comprises: a flexible cloth conductive layer (11) and an electrical connection component (14) attached to a substrate; a welding area (12) connected to the electrical connection component (14) is formed on the flexible cloth conductive layer (11); The electrical connection component (14) comprises: a wiring structure body (2), wherein the wiring structure body (2) is arranged at one end of the electrical connection component (14) connected to the flexible cloth conductive layer (11), and the wiring structure body (2) is welded to the welding area (12) to achieve the connection between the flexible cloth conductive layer (11) and the electrical connection component (14).

2. The hand-off detection pad according to claim 1, characterized in that: A welding coating (13) is provided on the welding area (12), and the welding coating (13) is used to assist in connecting the electrical connection component (14) with the flexible cloth conductive layer (11).

3. The hand-off detection pad according to claim 2, characterized in that: The electrical connection component (14) has a conductive portion (4) at one end close to the flexible cloth conductive layer (11), and the wiring structure body (2) is crimped and fixed to the conductive portion (4).

4. The hand-off detection pad according to claim 3, characterized in that: The wiring structure body (2) comprises: a first connecting portion (21) and a first welding portion (22) which cooperate with each other; the first connecting portion (21) is used to connect with the conductive portion (4); the first welding portion (22) is located at an end of the first connecting portion (21) away from the conductive portion (4) and is used to connect with the flexible cloth conductive layer (11).

5. The hand-off detection pad according to claim 4, characterized in that: The first connecting portion (21) and the first welding portion (22) are integrally formed metal structures.

6. The hand-off detection pad according to claim 4, characterized in that: The first welding portion (22) is used to contact the welding device (3) and receive heat from the welding device (3); The first welding portion (22) is arranged at the welding coating (13), and during welding, the welding coating (13) is melted by heating the first welding portion (22) to achieve connection between the flexible cloth conductive layer (11) and the electrical connection component (14).

7. The hand-off detection pad according to claim 6, characterized in that: At least one first opening (23) is provided on the first welding portion (22); the first opening (23) may be provided inside the first welding portion (22) or at an edge of the first welding portion (22).

8. The hand-off detection pad according to claim 4, characterized in that: The first connecting portion (21) comprises: a first fixing portion (24) and a second fixing portion (25); The first fixing portion (24) is used to connect to the insulating outer layer (41) of the conductive portion (4), and the second fixing portion (25) is used to connect to the conductive copper wire bundle (42) of the conductive portion (4).

9. The hand-off detection pad according to claim 8, characterized in that: The first fixing portion (24) comprises: a first fixing section (241) and a first covering section (242) arranged on both sides of the first fixing section (241); the first fixing section (241) is used to contact the insulating outer layer (41), and the first covering section (242) is used to cover the insulating outer layer (41); The second fixing portion (25) comprises: a second fixing section (251) and second coating sections (252) arranged on both sides of the second fixing section (251); the second fixing section (251) is used for contacting the conductive copper wire bundle (42), and the second coating section (252) is used for coating the conductive copper wire bundle (42).

10. A car steering wheel, characterized in that: A hands-off detection pad according to any one of claims 1 to 9 is used, further comprising: a steering wheel frame (5) and the hands-off detection pad (1) mounted on the steering wheel frame (5); the flexible cloth conductive layer (11) and the electrical connection component (14) in the hands-off detection pad (1) are connected via the wiring structure body (2).

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