Heating device for steering wheel

Abstract

The utility model relates to a heating device for a steering wheel. According to the technical scheme, the heating device for the steering wheel comprises a wrapping connecting layer, a supporting carrier and a heating unit, the heating unit is located between the wrapping connecting layer and the supporting carrier, the heating unit comprises a primary area heating structure and a secondary area heating structure which are prepared based on silk-screen printing, and the secondary area heating structure is located between the primary area heating structure and the secondary area heating structure. The primary area heating structure and the secondary area heating structure are in contact and are insulated and isolated; the heating unit and the supporting carrier are wrapped on the steering wheel through the wrapping connecting layer, the main area heating structure and the secondary area heating structure which are independent of each other are used for heating the main area heating structure and the secondary area heating structure of the steering wheel respectively, and the electromagnetic shielding layer is used for conducting electromagnetic shielding on the main area heating structure and the secondary area heating structure. Under the condition that the control comfort of the steering wheel is not influenced, the heating efficiency is improved, and the magnetic field interference during starting is reduced.

Description

Technical Field

[0001] This utility model relates to a heating device, and more particularly to a steering wheel heating device. Background Art

[0002] To heat a car steering wheel, a steering wheel heating device is typically installed. Currently, most steering wheel heating devices use sewn heating wires, such as stitching the heating wires onto thick TPU or foam materials using sewing techniques.

[0003] Understandably, the thicker substrate for the sewn heating wires increases the overall thickness of the steering wheel cover, reducing steering comfort. Heating wires using sewn technology are generally thinner, resulting in slower heating and a higher risk of breakage. Furthermore, the large current generated when the steering wheel heating device is switched on can cause strong magnetic field interference, affecting the operation of other electronic components in the car. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a steering wheel heating device that improves heating efficiency and reduces magnetic field interference during startup without affecting the comfort of steering wheel operation.

[0005] According to the technical solution provided by this utility model, a steering wheel heating device includes a covering connecting layer, a supporting carrier, and a heating unit, wherein...

[0006] The heating unit is located between the covering and connecting layer and the supporting carrier. The heating unit includes a main heating structure and a secondary heating structure prepared by screen printing. The main heating structure and the secondary heating structure are in contact and insulated from each other.

[0007] The heating unit and supporting carrier are wrapped around the steering wheel using a wrapping and connecting layer. The main heating area and the secondary heating area of ​​the steering wheel are heated by independent main heating structure and secondary heating structure respectively. The main heating area and the secondary heating area are electromagnetically shielded by an electromagnetic shielding layer.

[0008] The main heating structure is located on the supporting carrier, and the secondary heating structure is set on the main heating structure through an insulating connection layer.

[0009] The electromagnetic shielding layer is located between the secondary heating structure and the covering connection layer.

[0010] The electromagnetic shielding layer is in the form of a grid. The electromagnetic shielding layer is insulated from the secondary heating structure by a shielding insulation isolation layer, and the electromagnetic shielding layer is connected to the covering connection layer by a shielding connection layer.

[0011] The main heating structure includes a main heating layer printed on a support carrier, a main insulating support block disposed on the support carrier, and a main thermally conductive heating layer disposed on the main heating layer.

[0012] The main heating layer of the main area includes a first heating block, a second heating block, and a third heating block that are independent of each other and arranged in sequence.

[0013] The main area heat-conducting heating layer includes a main area first insulating heat conductor disposed on the main area first heating block, a main area secondary heating body disposed on the main area second heating block, and a main area second insulating heat conductor disposed on the main area third heating block, wherein the main area secondary heating body is electrically connected to the main area second heating block;

[0014] The main zone insulating support block is located outside the main zone first heating block, and the main zone insulating support block is in contact with the main zone first heating block and the main zone first insulating heat conductor;

[0015] When covered on the steering wheel, the main zone insulating support block corresponds to the first zone of the steering wheel, the main zone first insulating heat conductor corresponds to the first main zone of the steering wheel, the main zone auxiliary heating element corresponds to the second zone of the steering wheel, and the main zone second insulating heat conductor corresponds to the second main zone of the steering wheel.

[0016] The surface of the main thermally conductive heating layer away from the support carrier is flush with the surface of the main insulating support block away from the support carrier, and the main insulating support block includes a PET block.

[0017] The main heating structure is electrically connected to the main heating connection harness, wherein...

[0018] The main area heating connection harness includes a main area first connection line, a main area second connection line, and a main area third connection line, wherein the main area first connection line is electrically connected to the main area first heating block, the main area second connection line is electrically connected to the main area second heating block, and the main area third connection line is electrically connected to the main area third heating block.

[0019] The first, second, and third connecting lines of the main area are all in a grid pattern.

[0020] The secondary heating structure includes a secondary substrate, a secondary main heating layer printed on the secondary substrate, a secondary insulating support block disposed on the secondary substrate, and a secondary thermally conductive heating layer disposed on the secondary main heating layer, wherein...

[0021] The secondary zone main heating layer includes a first heating block, a second heating block, and a third heating block that are independent of each other and arranged in sequence.

[0022] The secondary zone heat-conducting heating layer includes a secondary zone first insulating heat conductor disposed on a secondary zone first heating block, a secondary zone auxiliary heating body disposed on a secondary zone second heating block, and a secondary zone second insulating heat conductor disposed on a secondary zone third heating block, wherein the secondary zone auxiliary heating body is electrically connected to the secondary zone second heating block.

[0023] The secondary zone insulating support block is located outside the secondary zone third heating block, and the secondary zone insulating support block is in contact with the main zone third heating block and the main zone second insulating heat conductor;

[0024] When covered on the steering wheel, the secondary zone insulating support block corresponds to the second main zone of the steering wheel, the secondary zone first insulating heat conductor corresponds to the first zone of the steering wheel, the secondary zone auxiliary heating element corresponds to the first main zone of the steering wheel, and the secondary zone second insulating heat conductor corresponds to the second zone of the steering wheel.

[0025] The secondary heating structure is electrically connected to the secondary heating connection harness, wherein...

[0026] The secondary heating connection harness includes a first secondary heating line, a second secondary heating line, and a third secondary heating line. The first secondary heating line is electrically connected to the first secondary heating block, the second secondary heating line is electrically connected to the second secondary heating block, and the third secondary heating line is electrically connected to the third secondary heating block.

[0027] The first, second, and third connecting lines of the sub-zone are all grid-like.

[0028] Supporting carriers include PET film, TPU film, or PI film.

[0029] The coating bonding layer includes a double-sided adhesive layer.

[0030] The advantages of this utility model are as follows: A heating unit is set between the covering connecting layer and the supporting carrier. The heating unit includes an independent main heating structure and a secondary heating structure, so that the main heating area and the secondary heating area of ​​the steering wheel can be heated and controlled separately, thereby improving the heating efficiency without affecting the steering wheel handling comfort; the electromagnetic shielding layer can reduce the electromagnetic interference generated when the main heating structure and the secondary heating structure are started, reduce the magnetic field interference when the heating device is started, and improve the reliability of heating the steering wheel. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of one embodiment of the heating device of this utility model.

[0032] Figure 2 This is a schematic diagram of one embodiment of the steering wheel of this utility model.

[0033] Figure 3 This is a schematic diagram of one embodiment of the heating connection harness for the main area of ​​this utility model.

[0034] Figure 4 This is a schematic diagram of one embodiment of the secondary heating connection harness of this utility model.

[0035] Explanation of reference numerals in the attached diagram: 1-Supporting carrier, 2-Main heating layer of the main zone, 3-Insulating support block of the main zone, 4-Second insulating heat conductor of the main zone, 5-Secondary heating element of the main zone, 6-Insulating connecting layer, 7-Sub-zone substrate, 8-Main heating layer of the secondary zone, 9-Insulating support block of the secondary zone, 10-First insulating heat conductor of the secondary zone, 11-Secondary heating element of the secondary zone, 12-Shielding insulating isolation layer, 13-Electromagnetic shielding layer, 14-Shielding connecting layer, 15-Covering connecting layer, 16-Steering wheel, 17-First insulating layer of the main zone 18 - Secondary heat-conducting insulation, 19 - Primary zone, 20 - First main zone, 21 - Secondary zone, 22 - Second main zone, 23 - Main zone heating connection harness connector, 24 - Main zone harness base, 25 - Main zone first connecting wire, 26 - Main zone second connecting wire, 27 - Main zone third connecting wire, 28 - Secondary zone first connecting wire, 29 - Secondary zone second connecting wire, 30 - Secondary zone third connecting wire, 31 - Secondary zone harness base, and 32 - Secondary zone heating connection harness connector. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the specific accompanying drawings and embodiments.

[0037] In order to improve heating efficiency and reduce magnetic field interference during startup without affecting the handling comfort of the steering wheel 16, this utility model provides a heating device for the steering wheel 16. Specifically, the heating device includes a covering connecting layer 15, a supporting carrier 1, and a heating unit.

[0038] The heating unit is located between the covering and connecting layer 15 and the support carrier 1. The heating unit includes a main area heating structure and a secondary area heating structure prepared by screen printing. The main area heating structure and the secondary area heating structure are in contact and insulated from each other.

[0039] The heating unit and the support carrier 1 are covered onto the steering wheel using the covering and connecting layer 15. The main heating area and the secondary heating area of ​​the steering wheel 16 are heated by the independent main heating structure and the secondary heating structure, respectively. The main heating structure and the secondary heating structure are electromagnetically shielded by the electromagnetic shielding layer 13.

[0040] It should be noted that the heating device of this utility model is mainly used for heating the steering wheel 16, which can be a commonly used car steering wheel. Figure 2The diagram illustrates one embodiment of a steering wheel 16. The steering wheel 16 is generally circular. Depending on how the steering wheel 16 is held, when heating the steering wheel 16, it can be divided into a main heating zone and a secondary heating zone. The main heating zone is generally the area where the steering wheel 16 is usually held and controlled; it is the area where the steering wheel 16 should be primarily heated. The secondary heating zone can be any area outside the main heating zone. Specifically, the areas corresponding to the 3 o'clock and 9 o'clock positions of the steering wheel 16 can be designated as the main heating zone, and the areas corresponding to the 12 o'clock and 6 o'clock positions can be designated as secondary heating zones. Therefore, the main heating zone may include a first main zone 20 and a second main zone 22, and the secondary heating zone may include a first zone 19 and a second zone 21, as shown below. Figure 2 As shown.

[0041] To improve the efficiency of heating the steering wheel 16 without affecting its handling comfort, the heating device of this utility model includes at least a covering connecting layer 15, a supporting carrier 1, and a heating unit. The heating unit is located between the covering connecting layer 15 and the supporting carrier 1. The covering connecting layer 15 can cover the entire heating device on the steering wheel 16, and the supporting carrier 1 can be used to assemble the heating unit. In specific implementations, the supporting carrier 1 includes a PET (polyethylene terephthalate) film, a TPU (thermoplastic polyurethane elastomer) film, or a PI film. The covering connecting layer 15 includes a double-sided adhesive layer. Of course, the supporting carrier 1 and the covering connecting layer 15 can also be made of other materials, which can be selected according to needs.

[0042] In specific implementation, the heating unit may include a main heating structure and a secondary heating structure. The main heating structure and the secondary heating structure are independent of each other. The main heating structure can be used to heat the main heating area of ​​the steering wheel 16, and the secondary heating structure can be used to heat the secondary heating area of ​​the steering wheel 16. Since the main heating structure and the secondary heating structure are independent of each other, the heating device of this utility model is more suitable for effectively heating the main heating area and the secondary heating area of ​​the steering wheel 16. In addition, the thickness of the entire heating device can be reduced.

[0043] In practical implementation, when the main heating structure and the secondary heating structure are prepared by screen printing, the thickness of the heating device can not exceed 0.3mm. Therefore, the thickness of the heating device is relatively small, and when the heating device is wrapped around the steering wheel through the covering connecting layer 15, it will not affect the comfort of controlling the steering wheel 16. Furthermore, the heating device should be flexible to effectively wrap around the steering wheel 16 without affecting the heating of the wrapped steering wheel 16.

[0044] In specific implementation, an electromagnetic shielding layer 13 is also provided inside the heating device. The electromagnetic shielding layer 13 can be used to electromagnetically shield the electromagnetic interference generated by the main heating structure and the secondary heating structure when heating is started, thereby reducing the impact of the heating device on other electronic components when it is working.

[0045] In one embodiment of the present invention, the main heating structure is located on the support carrier 1, and the secondary heating structure is disposed on the main heating structure through the insulating connection layer 6.

[0046] The electromagnetic shielding layer 13 is located between the secondary heating structure and the covering connection layer 15.

[0047] Figure 1 In the embodiment of the heating device shown, the main heating structure is located on the support carrier 1, and the secondary heating structure is located between the main heating structure and the covering connection layer 15. In the figure, the secondary heating structure can be disposed on the main heating structure via an insulating connection layer 6. The insulating connection layer 6 can be an adhesive layer, specifically designed to allow the secondary heating structure to be disposed on the main heating structure and effectively connected to it. Furthermore, the electromagnetic shielding layer 13 is generally located between the secondary heating structure and the covering connection layer 15.

[0048] In one embodiment of this utility model, the electromagnetic shielding layer 13 is in the form of a grid, and the electromagnetic shielding layer 13 is insulated from the secondary heating structure through the shielding insulation isolation layer 12. The electromagnetic shielding layer 13 is connected to the covering connection layer 15 through the shielding connection layer 14.

[0049] Specifically, the electromagnetic shielding layer 13 can be made of commonly used metal materials, as long as it can achieve the electromagnetic shielding effect. The electromagnetic shielding layer 13 can be prepared on the shielding insulating layer 12 using commonly used processes, such as screen printing. The electromagnetic shielding layer 13 is preferably in a grid shape to enable it to be stretchable. The shielding insulating layer 12 and the shielding connecting layer 14 can be made of PET film.

[0050] In one embodiment of this utility model, the main area heating structure includes a main area main heating layer 2 printed on a support carrier 1, a main area insulating support block 3 disposed on the support carrier 1, and a main area heat-conducting heating layer disposed on the main area main heating layer 2, wherein...

[0051] The main heating layer 2 of the main area includes a first heating block, a second heating block, and a third heating block of the main area that are independent of each other and arranged in sequence.

[0052] The main area heat-conducting heating layer includes a main area first insulating heat conductor 17 disposed on the main area first heating block, a main area secondary heating body 5 disposed on the main area second heating block, and a main area second insulating heat conductor 4 disposed on the main area third heating block, wherein the main area secondary heating body 5 is electrically connected to the main area second heating block.

[0053] The main zone insulating support block 3 is located outside the main zone first heating block, and the main zone insulating support block 3 is in contact with the main zone first heating block and the main zone first insulating heat conductor 17;

[0054] When covered on the steering wheel 16, the main area insulating support block 3 corresponds to the first area 19 of the steering wheel 16, the main area first insulating heat conductor 17 corresponds to the first main area 20 of the steering wheel 16, the main area auxiliary heating body 5 corresponds to the second area 21 of the steering wheel 16, and the main area second insulating heat conductor 4 corresponds to the second main area 22 of the steering wheel 16.

[0055] Figure 1 The diagram illustrates one embodiment of the main heating structure. As shown, the main heating structure may include a main heating layer 2, which is typically printed onto the support carrier 1 using a screen printing process. Figure 1 In the cross-section shown, the length of the main heating layer 2 in the main area is also less than the length of the support carrier 1. Therefore, a main area insulating support block 3 can be simultaneously set on the support carrier 1. The main area insulating support block 3 includes a PET block, that is, the main area insulating support block 3 can be made of PET film. The main area insulating support block 3 should be in contact with the main heating layer 2 in the main area. Figure 1 As shown.

[0056] To achieve heating regulation, the main heating layer 2 of this invention may include a first heating block, a second heating block, and a third heating block arranged independently and sequentially. The arrangement direction of the first heating block, the second heating block, and the third heating block may be along... Figure 1 The insulating support block 3 in the main zone points towards the main heating layer 2 in the main zone. Furthermore... Figure 1 The arrangement of the first, second, and third heating blocks in the main area is not shown. Since the main heating layer 2 in the main area can be prepared by screen printing, the first, second, and third heating blocks in the main area can be prepared according to the process conditions during screen printing.

[0057] Specifically, the first heating block, the second heating block, and the third heating block of the main area are capable of generating heat through electricity, thereby heating the steering wheel 16 by utilizing the heat generated through electricity. The main heating layer 2 of the main area can be made of commonly used metal materials with heating capabilities.

[0058] In order to regulate the heating state of the main heating layer 2, a main heat-conducting heating layer can be provided on the main heating layer 2. Specifically, the surface of the main heat-conducting heating layer away from the supporting carrier 1 is flush with the surface of the main insulating support block 3 away from the supporting carrier 1. Figure 1 As shown. In specific implementation, the main area heat-conducting heating layer includes a main area first insulating heat conductor 17, a main area secondary heating body 5, and a main area second insulating heat conductor 4. The main area first insulating heat conductor 17 and the main area second insulating heat conductor 4 can be made of commonly used insulating heat-conducting materials, such as PET (Polyester) film. The main area secondary heating body 5 can be made of the same metal material as the main area main heating layer 2.

[0059] As can be seen from the above description, when the main zone auxiliary heating element 5 is disposed on the main zone second heating block and electrically connected to the main zone second heating block, a thicker main and auxiliary heating element can be formed. The thickness of the main zone first heating block and the main zone third heating block is smaller than the thickness of the main and auxiliary heating element. Therefore, when heating the steering wheel 16, under the same heating current, the heating power of the main and auxiliary heating elements is smaller than the heating power of the main zone first heating block and the main zone third heating block.

[0060] In specific implementation, when covered on the steering wheel 16, the main zone insulating support block 3 corresponds to the first zone 19 of the steering wheel 16, the main zone first insulating heat conductor 17 and the main zone first heating block correspond to the first main zone 20 of the steering wheel 16, the main zone auxiliary heating body 5 and the main zone second heating block correspond to the second zone 21 of the steering wheel 16, and the main zone second insulating heat conductor 4 and the main zone third heating block correspond to the second main zone 22 of the steering wheel 16. Therefore, when the main zone heating structure is working, it mainly heats the first main zone 20 and the second main zone 22 of the steering wheel 16.

[0061] In one embodiment of this utility model, the main heating structure is electrically connected to the main heating connection harness, wherein...

[0062] The main area heating connection harness includes a main area first connection line 25, a main area second connection line 26, and a main area third connection line 27. The main area first connection line 25 is electrically connected to the main area first heating block, the main area second connection line 26 is electrically connected to the main area second heating block, and the main area third connection line 27 is electrically connected to the main area third heating block.

[0063] The first connecting line 25, the second connecting line 26, and the third connecting line 27 of the main area are all in a grid pattern.

[0064] It is understandable that after the heating device is wrapped around the steering wheel 16, in order to heat the steering wheel 16, the main heating structure should be connected to the main heating connection harness so that the main heating connection harness can provide the heating current required for the main heating structure. In addition, the heating state of the main heating structure can also be controlled through the main heating connection harness, such as controlling the heating state of the first main heating block, the second main heating block and / or the third main heating block.

[0065] Figure 3 The figure shows an embodiment of the main area heating connection harness. The main area heating connection harness may include a main area harness base 24 and a main area heating connection harness connector 23 adapted to be connected to the main area harness base 24. The main area heating connection harness connector 23 can be connected to a controller that controls the heating device. The method and process of using the controller to control the heating device to heat the steering wheel can be consistent with the prior art, and will not be described in detail here.

[0066] Figure 3 The main area wiring harness base 24 includes a first main area connecting line 25, a second main area connecting line 26, and a third main area connecting line 27. Specifically, the first main area connecting line 25 is electrically connected to the first main area heating block, the second main area connecting line 26 is electrically connected to the second main area heating block, and the third main area connecting line 27 is electrically connected to the third main area heating block. Generally, the first main area connecting line 25, the second main area connecting line 26, and the third main area connecting line 27 can be connected in series. Of course, the first main area connecting line 25, the second main area connecting line 26, and the third main area connecting line 27 can also be independent of each other, depending on whether the required heating connection can be achieved.

[0067] In order to provide tensile deformation capability, in one embodiment of the present invention, the first connecting line 25, the second connecting line 26, and the third connecting line 27 of the main area are all in a mesh shape. Specifically, the first connecting line 25, the second connecting line 26, and the third connecting line 27 of the main area can be prepared on the main area wire harness substrate 24 by screen printing process.

[0068] In one embodiment of this utility model, the secondary heating structure includes a secondary substrate 7, a secondary main heating layer 8 printed on the secondary substrate 7, a secondary insulating support block 9 disposed on the secondary substrate 7, and a secondary thermally conductive heating layer disposed on the secondary main heating layer, wherein...

[0069] The secondary zone main heating layer 8 includes a first heating block, a second heating block, and a third heating block that are independent of each other and arranged in sequence.

[0070] The secondary zone heat-conducting heating layer includes a secondary zone first insulating heat conductor 10 disposed on the secondary zone first heating block, a secondary zone auxiliary heating body 11 disposed on the secondary zone second heating block, and a secondary zone second insulating heat conductor 18 disposed on the secondary zone third heating block, wherein the secondary zone auxiliary heating body 11 is electrically connected to the secondary zone second heating block.

[0071] The secondary zone insulating support block 9 is located outside the secondary zone third heating block, and the secondary zone insulating support block 9 is in contact with the main zone third heating block and the main zone second insulating heat conductor 18.

[0072] When covered on the steering wheel 16, the secondary zone insulating support block 9 corresponds to the second main zone 22 of the steering wheel 16, the secondary zone first insulating heat conductor 10 corresponds to the first zone 19 of the steering wheel 16, the secondary zone auxiliary heating element 11 corresponds to the first main zone 20 of the steering wheel 16, and the secondary zone second insulating heat conductor 18 corresponds to the second zone 21 of the steering wheel 16.

[0073] As can be seen from the above description, the secondary heating structure is mainly used for the secondary heating area of ​​the steering wheel 16. The details of the secondary heating structure can be referred to the description of the main heating structure above. The only difference between the two is that the heating area of ​​the steering wheel 16 is different, which will not be repeated here.

[0074] In one embodiment of this utility model, the secondary heating structure is electrically connected to the secondary heating connection harness, wherein...

[0075] The secondary heating connection harness includes a secondary first connection line 28, a secondary second connection line 29, and a secondary third connection line 30. The secondary first connection line 28 is electrically connected to the secondary first heating block, the secondary second connection line 29 is electrically connected to the secondary second heating block, and the secondary third connection line 30 is electrically connected to the secondary third heating block.

[0076] The first connecting line 28, the second connecting line 29, and the third connecting line 30 of the sub-zone are all in a grid pattern.

[0077] Specifically, the details of the secondary heating connection harness can be found in [reference needed]. Figure 4 Description, Figure 4 In the middle, the first connecting line 28, the second connecting line 29, and the third connecting line 30 of the secondary zone can be prepared on the secondary zone wire harness substrate 31 by screen printing process. The secondary zone heating connecting wire harness connector 32 is also provided on the secondary zone wire harness connecting substrate 31. The connection between the secondary zone heating connecting wire harness, the secondary zone heating structure and the secondary zone heating connecting wire harness can be referred to the above description of the connection between the main zone heating structure and the main zone heating connecting wire harness, and will not be repeated here.

Claims

1. A steering wheel heating device, characterized in that, The heating device includes a covering connecting layer, a supporting carrier, and a heating unit, wherein... The heating unit is located between the covering and connecting layer and the supporting carrier. The heating unit includes a main heating structure and a secondary heating structure prepared by screen printing. The main heating structure and the secondary heating structure are in contact and insulated from each other. The heating unit and supporting carrier are wrapped around the steering wheel using a wrapping and connecting layer. The main heating area and the secondary heating area of ​​the steering wheel are heated by independent main heating structure and secondary heating structure respectively. The main heating area and the secondary heating area are electromagnetically shielded by an electromagnetic shielding layer.

2. The steering wheel heating device according to claim 1, characterized in that: The main heating structure is located on the supporting carrier, and the secondary heating structure is set on the main heating structure through an insulating connection layer. The electromagnetic shielding layer is located between the secondary heating structure and the covering connection layer.

3. The steering wheel heating device according to claim 1, characterized in that: The electromagnetic shielding layer is in the form of a grid. The electromagnetic shielding layer is insulated from the secondary heating structure by a shielding insulation isolation layer, and the electromagnetic shielding layer is connected to the covering connection layer by a shielding connection layer.

4. The steering wheel heating device according to claim 2, characterized in that: The main heating structure includes a main heating layer printed on a support carrier, a main insulating support block disposed on the support carrier, and a main thermally conductive heating layer disposed on the main heating layer. The main heating layer of the main area includes a first heating block, a second heating block, and a third heating block that are independent of each other and arranged in sequence. The main area heat-conducting heating layer includes a main area first insulating heat conductor disposed on the main area first heating block, a main area secondary heating body disposed on the main area second heating block, and a main area second insulating heat conductor disposed on the main area third heating block, wherein the main area secondary heating body is electrically connected to the main area second heating block; The main zone insulating support block is located outside the main zone first heating block, and the main zone insulating support block is in contact with the main zone first heating block and the main zone first insulating heat conductor; When covered on the steering wheel, the main zone insulating support block corresponds to the first zone of the steering wheel, the main zone first insulating heat conductor corresponds to the first main zone of the steering wheel, the main zone auxiliary heating element corresponds to the second zone of the steering wheel, and the main zone second insulating heat conductor corresponds to the second main zone of the steering wheel.

5. The steering wheel heating device according to claim 4, characterized in that: The surface of the main thermally conductive heating layer away from the support carrier is flush with the surface of the main insulating support block away from the support carrier, and the main insulating support block includes a PET block.

6. The steering wheel heating device according to claim 4, characterized in that: The main heating structure is electrically connected to the main heating connection harness, wherein... The main area heating connection harness includes a main area first connection line, a main area second connection line, and a main area third connection line, wherein the main area first connection line is electrically connected to the main area first heating block, the main area second connection line is electrically connected to the main area second heating block, and the main area third connection line is electrically connected to the main area third heating block. The first, second, and third connecting lines of the main area are all in a grid pattern.

7. The steering wheel heating device according to claim 4, characterized in that: The secondary heating structure includes a secondary substrate, a secondary main heating layer printed on the secondary substrate, a secondary insulating support block disposed on the secondary substrate, and a secondary thermally conductive heating layer disposed on the secondary main heating layer, wherein... The secondary zone main heating layer includes a first heating block, a second heating block, and a third heating block that are independent of each other and arranged in sequence. The secondary zone heat-conducting heating layer includes a secondary zone first insulating heat conductor disposed on a secondary zone first heating block, a secondary zone auxiliary heating body disposed on a secondary zone second heating block, and a secondary zone second insulating heat conductor disposed on a secondary zone third heating block, wherein the secondary zone auxiliary heating body is electrically connected to the secondary zone second heating block. The secondary zone insulating support block is located outside the secondary zone third heating block, and the secondary zone insulating support block is in contact with the main zone third heating block and the main zone second insulating heat conductor; When covered on the steering wheel, the secondary zone insulating support block corresponds to the second main zone of the steering wheel, the secondary zone first insulating heat conductor corresponds to the first zone of the steering wheel, the secondary zone auxiliary heating element corresponds to the first main zone of the steering wheel, and the secondary zone second insulating heat conductor corresponds to the second zone of the steering wheel.

8. The steering wheel heating device according to claim 7, characterized in that: The secondary heating structure is electrically connected to the secondary heating connection harness, wherein... The secondary heating connection harness includes a first secondary heating line, a second secondary heating line, and a third secondary heating line. The first secondary heating line is electrically connected to the first secondary heating block, the second secondary heating line is electrically connected to the second secondary heating block, and the third secondary heating line is electrically connected to the third secondary heating block. The first, second, and third connecting lines of the sub-zone are all grid-like.

9. The steering wheel heating device according to any one of claims 1 to 8, characterized in that: Supporting carriers include PET film, TPU film, or PI film.

10. The steering wheel heating device according to any one of claims 1 to 8, characterized in that: The coating bonding layer includes a double-sided adhesive layer.

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