Steering wheel and vehicle

Abstract

The utility model provides a steering wheel and a vehicle. The steering wheel comprises an annular handle ring and a heating pad arranged outside the handle ring in a sleeving mode. The heating pad comprises a heat storage layer and at least one heating assembly, the heat storage layer is elastic and sleeves the handle ring, the heating assembly comprises a plurality of graphene monomers and a metal wire used for connecting the graphene monomers in series, the graphene monomers are arranged on the heat storage layer and are sequentially arranged in the circumferential direction of the handle ring, and the metal wire is used for connecting the graphene monomers in series. And the metal wire between two adjacent graphene monomers is bent. According to the steering wheel, the portion, between every two adjacent graphene monomers, of the metal wire is arranged to be in the bent shape, the metal wire is provided with a redundant part for the two connected graphene monomers to be away from each other, in this way, the heating assembly can have large elastic force to be connected with the handle ring in a sleeved mode, extrusion wrinkles caused by insufficient elastic force are avoided, and the service life of the steering wheel is prolonged. And the application of the graphene on the steering wheel is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle steering wheels, and particularly relates to a steering wheel and a vehicle. Background Art

[0002] Traditional steering wheels use metal copper wires as heating elements. The metal copper wires are fixed on a base material pad by surface wires to form a steering wheel heating pad, and then the steering wheel heating pad is pasted onto the grip ring of the steering wheel through back glue. In an environment of -20°C, it takes 5 minutes to heat up from -20°C to 20°C, with a long time and a slow heating rate. Moreover, the power of the electric heating pad reaches 105W, resulting in high power consumption. Currently, on the market, there has emerged a steering wheel that uses a whole piece of graphene as the heating source for the steering wheel heating pad. However, due to the very limited elasticity of graphene, with a stretching rate of less than 10%, when the steering wheel heating pad is put on the grip ring, the steering wheel heating pad will produce wrinkles due to stretching deformation and extrusion, so it cannot be arranged. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a steering wheel and a vehicle, aiming to solve the technical problem that when a whole piece of graphene is used as the heating source currently, it cannot be arranged on the steering wheel.

[0004] The utility model is implemented as follows. In the first aspect, a steering wheel is provided, which includes a grip ring and a heating pad;

[0005] The grip ring is annular;

[0006] The heating pad includes a heat storage layer and at least one heating component. The heat storage layer has elasticity and is sleeved outside the grip ring. The heating component includes a plurality of graphene monomers and a metal wire for connecting the plurality of graphene monomers in series. The plurality of graphene monomers are arranged on the heat storage layer and are sequentially arranged along the circumferential direction of the grip ring. The metal wire between adjacent two graphene monomers is bent.

[0007] In one embodiment of the first aspect, the heating component is arranged on the side of the heat storage layer facing the grip ring.

[0008] In one embodiment of the first aspect, there are a plurality of heating components, and the plurality of heating components are arranged in parallel and are sequentially arranged along the circumferential direction of the extension track line of the grip ring.

[0009] In one embodiment of the first aspect, the graphene in adjacent two heating components is spaced apart.

[0010] In one embodiment of the first aspect, the graphene monomers in adjacent two heating components are at least partially misaligned in the circumferential direction of the extension track line of the grip ring.

[0011] In one embodiment of the first aspect, the graphene monomer includes a base material, a graphene film, and a conductive metal sheet. The base material is connected to the heat storage layer. The graphene film is disposed on the base material, and the conductive metal sheet is disposed on the graphene film and is connected in series with the metal wire.

[0012] In one embodiment of the first aspect, there are a plurality of the conductive metal sheets. The plurality of conductive metal sheets are spaced apart. At least one of the plurality of conductive metal sheets is connected to one of the metal wires, and the remaining conductive metal sheets are connected to the other metal wire.

[0013] In one embodiment of the first aspect, the graphene monomer further includes a protective film coated on the graphene film or on the graphene film and the conductive metal sheet.

[0014] In one embodiment of the first aspect, the steering wheel further includes an outer skin layer disposed outside the heating pad.

[0015] In a second aspect, a vehicle is provided, including a vehicle body and the steering wheel as described in the above embodiments. The steering wheel is connected to an end of a steering rod of the vehicle body.

[0016] The technical effect of the present utility model relative to the prior art is as follows: When the heating pad is put on the handlebar ring, the heat storage layer will be stretched. By setting the heating component as a plurality of serially connected graphene monomers, the heat storage layer can elastically deform through the gaps between adjacent two graphene monomers. By setting the metal wire between adjacent two graphene monomers to be bent, the metal wire has a redundant part for the two connected graphene monomers to move away from each other. That is, when the heat storage layer is stretched, adjacent two graphene monomers move away from each other and the bending degree of the metal wire decreases. After removing the external force on the heating pad, the heat storage layer contracts, adjacent two graphene monomers approach each other, and the bending degree of the metal wire increases. In this way, the heating component can have a large elastic force to realize the socket connection with the handlebar ring, avoiding extrusion wrinkles due to insufficient elastic force, and realizing the application of graphene on the steering wheel. In addition, the graphene monomer can generate far-infrared light concentrated in the range of 6 - 14 μm, which generates a frequency resonance with the far-infrared wave generated by the human body itself, promotes the absorption of the far-infrared wave ability by the human body, and better improves the human body blood circulation. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments of the present utility model or the description of the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional structure diagram of the steering wheel provided by an embodiment of the present utility model;

[0019] Figure 2 It is an exploded view of the steering wheel provided by an embodiment of the present utility model;

[0020] Figure 3 It is a sectional view of the steering wheel provided by an embodiment of the present utility model;

[0021] Figure 4 It is an arrangement diagram of the heating component in the steering wheel provided by an embodiment of the present utility model;

[0022] Figure 5 It is a structural schematic diagram of the graphene monomer provided by an embodiment of the present utility model.

[0023] Explanation of reference numerals:

[0024] 100, steering wheel; 10, grip ring; 20, heating pad; 201, wire; 21, heat storage layer; 22, heating component; 221, graphene monomer; 2211, substrate; 2212, graphene film; 2213, conductive metal sheet; 222, metal wire; 222a, first metal wire; 222b, second metal wire; 30, skin layer; 90, support frame. Detailed implementation manners

[0025] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0028] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figure 1 , an embodiment of the present utility model provides a steering wheel 100 and a vehicle. The vehicle includes a vehicle body and a steering wheel 100 provided on the driver's seat of the vehicle body. The steering wheel 100 is also called a steering wheel, which is installed at the end of the steering rod and is used for the driver to operate the steering.

[0031] Please refer to Figure 2 and Figure 3 , the steering wheel 100 includes a grip ring 10 and a heating pad 20. The grip ring 10 is connected to the end of the steering rod through a support frame 90. A controller is provided in the support frame 90. The controller can be an Electronic Control Unit (ECU), and the controller is connected to a power source. The grip ring 10 is annular. The grip ring 10 has a rotation axis and an extension trajectory line. The rotation axis of the grip ring 10 is the central axis of the grip ring 10. The grip ring 10 extends around the rotation axis to form an annular shape. The circumferential direction of the grip ring 10 is the circumferential direction around the rotation axis. The extension trajectory line of the grip ring 10 is an annular line, and this extension trajectory line passes through the midpoints of the cross-sections at different positions of the grip ring 10. Among them, the grip ring 10 can be made of foaming materials such as polyurethane to provide a comfortable grip feeling and help absorb impact energy during a collision to protect the driver. The heating pad 20 is sleeved outside the grip ring 10 and is used for heating to improve the driver's operation experience. The heating pad 20 can be adhesively bonded to the grip ring 10 through an adhesive layer, and the adhesive layer can be a 3M adhesive layer.

[0032] Optionally, a multimedia screen is provided on the vehicle body. The multimedia screen is a touch screen, and an electric heating virtual switch is provided on the touch screen. The controller is electrically connected to the electric heating virtual switch. When electric heating of the steering wheel 100 is required, the driver can press the electric heating virtual switch, and the controller controls the heating pad 20 to generate heat after receiving the heating instruction.

[0033] Optionally, a notch can be provided on the grip ring 10 so that the grip ring 10 forms an arc-shaped structure, thereby improving the aesthetics.

[0034] The heating pad 20 includes a heat storage layer 21 and at least one heating component 22.

[0035] The heat storage layer 21 is elastic, and the materials of the heat storage layer 21 include but are not limited to insulating materials such as polyethylene (PE), polyurethane (PU), and ethylene propylene diene monomer (EPDM). The heat storage layer 21 is sleeved outside the handle ring 10. The heat storage layer 21 can cover all areas of the handle ring 10 along the extension direction of the extension track line of the handle ring 10, or only cover part of the area of the handle ring 10. The heat storage layer 21 can be connected to the handle ring 10 in multiple pieces or as a whole piece. The cross-section of the heat storage layer 21 perpendicular to the extension track line can be arc-shaped or an annular shape with a notch, which is not limited here as long as it can be sleeved outside the handle ring 10 through its own elasticity.

[0036] The heating component 22 is arranged on the heat storage layer 21 and is electrically connected to the controller. The heating component 22 can generate heat through the control of the controller. The heat storage layer 21 can carry the heat generated by the heating component 22 and transfer the heat to the driver's hand.

[0037] Among them, please refer to Figure 4 , the heating component 22 includes a plurality of graphene monomers 221 and a metal wire 222 for connecting the plurality of graphene monomers 221 in series. Both ends of the heating component 22 are respectively connected to the positive electrode and the negative electrode of the controller through wires 201. The wires 201 at both ends of the heating component 22 are respectively connected to the graphene monomers 221 at both ends in the heating component 22. In this way, all the graphene monomers 221 in the heating component 22 can be connected in series to the circuit. The plurality of graphene monomers 221 are arranged on the heat storage layer 21 and are arranged in sequence along the circumferential direction of the handle ring 10. The graphene monomers 221 can be bonded to the heat storage layer 21 or embedded in the heat storage layer 21. The metal wire 222 between two adjacent graphene monomers 221 is bent. Among them, the sequential arrangement of the graphene monomers 221 along the circumferential direction of the handle ring 10 means that the arrangement direction of the plurality of graphene monomers 221 is the same or approximately the same as the extension direction of the extension track line of the handle ring 10.

[0038] It should be noted that the curved shape includes, but is not limited to, a sine wave shape, a sawtooth shape, a spiral shape, or an irregular curved shape, as long as it can be stretched and deformed in the extending direction of the extending track line. The metal wire 222 can be in the form of a wire or a sheet, as long as it is flexible and can be bent. The metal wire 222 can be connected to the heat storage layer 21 and deformed as the heat storage layer 21 is stretched, or can be relatively independent of the heat storage layer 21 to facilitate self-stretching and deformation. The shape of the graphene monomer 221 can be circular, oval, polygonal, or irregular, and the length of each graphene monomer 221 in the circumferential direction of the extending track line of the handlebar loop 10 is less than the circumference of the heat storage layer 21 in the circumferential direction of the extending track line of the handlebar loop 10. The material of the metal wire 222 can be copper, aluminum, silver, etc.

[0039] When the heating pad 20 is put on the handlebar loop 10, the heat storage layer 21 will be stretched. The steering wheel 100 enables the heat storage layer 21 to elastically deform through the gap between two adjacent graphene monomers 221 by setting the heating component 22 as a plurality of series-connected graphene monomers 221. By setting the metal wire 222 between two adjacent graphene monomers 221 in a curved shape, the metal wire 222 has a redundant part for the two connected graphene monomers 221 to move away from each other. That is, when the heat storage layer 21 is stretched, two adjacent graphene monomers 221 move away from each other and the bending degree of the metal wire 222 decreases. After the external force on the heating pad 20 is removed, the heat storage layer 21 contracts, two adjacent graphene monomers 221 move closer to each other, and the bending degree of the metal wire 222 increases. In this way, the heating component 22 can have a greater elastic force to achieve the socket connection with the handlebar loop 10, avoiding extrusion wrinkles due to insufficient elastic force, and realizing the application of graphene on the steering wheel 100. In addition, the heat generated by the graphene monomer 221 can produce far-infrared light concentrated at 6-14 μm, which generates a frequency resonance with the far-infrared wave generated by the human body itself, promotes the absorption of the far-infrared wave ability by the human body, and better improves human blood circulation.

[0040] Optionally, the heating component 22 is arranged on the side of the heat storage layer 21 facing the handlebar loop 10. In this way, the heat storage layer 21 can accumulate the heat generated by the heating component 22 in the heat storage layer 21, providing better heat preservation and avoiding scalding the driver at the same time. In other embodiments, the heating component 22 can also be arranged on the side of the heat storage layer 21 facing away from the handlebar loop 10, and there is no limitation here.

[0041] Please refer to Figure 4, in some embodiments, there are multiple heating components 22, and the multiple heating components 22 are connected in parallel. That is, the multiple heating components 22 are all connected in series to the circuit through the wire 201, and the multiple heating components 22 are in parallel with each other. The multiple heating components 22 are arranged in sequence along the extension track line of the handle ring 10. In this way, the number of graphene monomers 221 provided on the heat storage layer 21 can be increased, thereby increasing the total heat of the heating pad 20. Among them, the number of graphene monomers 221 in each heating component 22 can be the same or different, and can be specifically set according to actual needs.

[0042] It should be noted that to improve the elasticity of the heating pad 20, the size of each graphene monomer 221 can be reduced and the number of graphene monomers 221 can be increased. In this way, the number and density of the gaps between adjacent two graphenes can be increased, so that the heating pad 20 has more deformable regions, increasing the elasticity and deformability of the heating pad 20. However, with the increase in the number of graphene monomers 221, the processing difficulty of arranging each heating component 22 on the heat storage layer 21 also increases. In practical applications, the number of heating components 22 and the number of graphene monomers 221 in the heating components 22 can be selected according to actual needs.

[0043] Optionally, the graphene monomers 221 in adjacent two heating components 22 are spaced apart, which increases the elasticity of the heating pad 20 in the circumferential direction of the extension track line of the handle ring 10.

[0044] Please refer to Figure 4 , in some embodiments, the graphene monomers 221 in adjacent two heating components 22 are at least partially misaligned in the direction of the extension track line of the handle ring 10. In this way, the gaps between the graphene monomers 221 of adjacent two heating components 22 and the gaps between adjacent two graphene monomers 221 in the heating component 22 together form a grid shape with grid lines inclined to the extension track line of the handle ring 10, which is convenient for the heating pad 20 to deform inclined to the extension track line of the handle ring 10.

[0045] Optionally, the graphene monomer 221 is hexagonal. In this way, the density of the graphene monomers 221 that can be arranged on the heat storage layer 21 can be increased. Among them, the metal wires 222 or wires 201 connected to both ends of each graphene monomer 221 are connected to two opposite vertices among the six vertices of the graphene monomer 221, or are connected to two opposite sides among the six sides of the graphene monomer 221. In this shape, by adjusting the distance between adjacent two graphene monomers 221, the stretching rate of the heating pad 20 can be increased to 15%, thereby alleviating or eliminating the wrinkles generated on the heating pad 20.

[0046] Please refer to Figure 3 and Figure 5, in some embodiments, the graphene monomer 221 includes a substrate 2211, a graphene film 2212, and conductive metal sheets 2213. The substrate 2211 is connected to the heat storage layer 21. The graphene film 2212 is disposed on the substrate 2211. There are multiple conductive metal sheets 2213, and all of them are disposed on the graphene film 2212. The multiple conductive metal sheets 2213 are spaced apart from each other. The two metal wires 222 connected to the graphene monomer 221 are respectively connected to at least one conductive metal sheet 2213 and are in series with the metal wires 222. It can be understood that the substrate 2211 and the heat storage layer 21 are stacked or at least partially embedded in the heat storage layer 21. The graphene film 2212 and the substrate 2211 are stacked. The projection of the graphene film 2212 on the heat storage layer 21 is less than or equal to the projection of the substrate 2211 on the heat storage layer 21, so that the substrate 2211 can support the graphene film 2212. The two metal wires connected to the graphene monomer 221 can be named the first metal wire 222a and the second metal wire 222b. All of the multiple conductive metal sheets 2213 are in contact with the graphene film 2212. At least one of the multiple conductive metal sheets 2213 is connected to the first metal wire 222a, and the other conductive metal sheets 2213 are connected to the second metal wire 222b. The conductive metal sheets 2213 connected to the first metal wire 222a and the conductive metal sheets connected to the second metal wire 222b are electrically connected through the graphene film 2212, so that the graphene monomer 221 is connected in series to the circuit. After the heating pad 20 is powered on, the current is transmitted to the graphene film 2212 through the conductive metal sheets 2213, and the graphene film 2212 generates heat, thereby causing the graphene monomer 221 to generate heat.

[0047] Among them, the graphene film 2212 can be disposed on the side of the substrate 2211 facing the heat storage layer 21 to increase the heat of the heat storage layer 21. The graphene film 2212 can also be disposed on the side facing away from the heat storage layer 21 to protect the heat storage layer 21 through the substrate 2211 and prevent the heat storage layer 21 from being broken down by the current.

[0048] Optionally, a plurality of conductive metal sheets 2213 are provided. The plurality of conductive metal sheets 2213 are arranged along a preset path, and the plurality of conductive metal sheets 2213 are alternately connected to the first metal wire 222a and the second metal wire 222b along the extending direction of the preset path. In this way, different regions of the graphene film 2212 can receive the current of the conductive metal sheets 2213, and thus, heat can be generated in different regions of the graphene film 2212 to make the heat of the graphene monomer 221 balanced. Among them, the conductive metal sheets 2213 can extend linearly, the extending direction of each conductive metal sheet 2213 can be substantially parallel to the extending track line of the heating coil 10, and the arrangement direction of the plurality of conductive metal sheets 2213 is the same as the arrangement direction of the plurality of heating components 22, so as to facilitate the series connection of the plurality of conductive metal sheets 2213 to the two metal wires 222. It should be noted that the plurality of conductive metal sheets 2213 can be provided on the same side of the graphene film 2212 or on different sides. When the plurality of conductive metal sheets 2213 are provided on the same side of the graphene film 2212, they can all be provided on the side of the graphene film 2212 facing away from the base material 2211.

[0049] Optionally, the graphene monomer 221 further includes a protective film, which is coated on the graphene film 2212 or on the graphene film 2212 and the conductive metal sheets 2213. The protective film can prevent the graphene monomer 221 from leaking electricity and at the same time protect the graphene film 2212. Among them, the protective film can be a transparent insulating film.

[0050] Please refer to Figure 2 and Figure 3 In some embodiments, the steering wheel 100 further includes an epidermal layer 30 provided outside the heating pad 20. The epidermal layer 30 can protect the heat storage layer 21, and also has a certain heat insulation or heat storage effect, preventing the driver from being scalded, and at the same time can improve the touch feel of the steering wheel 100. Among them, the material of the epidermal layer 30 can be genuine leather, and the epidermal layer 30 can be bonded to the heating pad 20 through another adhesive layer, and the another adhesive layer can also be a 3M adhesive layer.

[0051] The electric heating process of the steering wheel 100 includes the following steps:

[0052] S1. The driver uses a finger to touch and click an electric heating virtual switch located in the multimedia screen. The multimedia host calculates the capacitance signal between the driver's finger and the multimedia screen, and can confirm that the driver's finger has clicked the electric heating virtual switch when the capacitance value in the capacitance signal exceeds the touch capacitance threshold. At this time, the multimedia host converts the capacitance signal into a CAN (Controller Area Network) signal for turning on the electric heating.

[0053] S2 . After receiving the CAN signal indicating that the electric heating is turned on from the CAN network, the controller supplies 2.5 A of current to the heating pad 20 , and the current is transmitted to the graphene monomer 221 through the wire 201 .

[0054] S3. The graphene monomer 221 generates heat through the graphene film 2212 under the action of the current.

[0055] When the heating pad 20 is under the condition of 12V voltage and 2A current, since the volume of each graphene monomer 221 is small, the electric heating power of the multiple small graphene monomers 221 in this application can be reduced to 20W compared to using a whole piece of graphene in the heating pad 20, thereby reducing the power consumption of the battery of the whole vehicle and avoiding battery depletion. At the same time, the time for the heating pad 20 in this application to heat up from -20℃ to 20℃ can be increased to less than 1 minute, and the maximum temperature can be increased to 39℃, which greatly improves the human-machine experience of the driver getting in the car in cold environments and feeling the electric heating function of the steering wheel 100.

[0056] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A steering wheel, characterized in that, Comprising: A handle ring, in a circular shape; A heating pad, including a heat storage layer and at least one heating component. The heat storage layer is elastic and sleeved outside the handle ring. The heating component includes a plurality of graphene monomers and a metal wire for connecting the plurality of graphene monomers in series. The plurality of graphene monomers are arranged on the heat storage layer and are sequentially arranged along the circumferential direction of the handle ring. The metal wire between two adjacent graphene monomers is in a bent shape.

2. The steering wheel according to claim 1, wherein, The heating component is arranged on one side of the heat storage layer facing the handle ring.

3. The steering wheel according to claim 1, wherein, There are a plurality of the heating components, and the plurality of heating components are arranged in parallel and are sequentially arranged along the circumferential direction of the extension track line of the handle ring.

4. The steering wheel according to claim 3, wherein The graphene in two adjacent heating components is spaced apart.

5. The steering wheel according to claim 3, characterized in that The graphene monomers in two adjacent heating components are at least partially misaligned in the circumferential direction of the extension track line of the handle ring.

6. The steering wheel according to claim 1, wherein The graphene monomer includes a substrate, a graphene film and a conductive metal sheet. The substrate is connected to the heat storage layer. The graphene film is arranged on the substrate. There are a plurality of the conductive metal sheets, and the plurality of conductive metal sheets are all arranged on the graphene film and are spaced apart. At least one of the plurality of conductive metal sheets is connected to one of the metal wires, and the remaining conductive metal sheets are connected to the other metal wire, two conductive metal sheets.

7. The steering wheel according to claim 6, characterized in that, At least two of the conductive metal sheets are connected to one of the metal wires, and at least two of the conductive metal sheets are connected to the other metal wire.

8. The steering wheel according to claim 6, wherein, The graphene monomer further includes a protective film coated on the graphene film or on the graphene film and the conductive metal sheet.

9. The steering wheel according to claim 1, characterized in that, The steering wheel further includes an epidermis layer arranged outside the heating pad.

10. A vehicle, characterized in that, Comprising a vehicle body and a steering wheel according to any one of claims 1 to 9, the steering wheel being connected to the end of the steering rod of the vehicle body.

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