Steering wheel heating device and vehicle

Abstract

The embodiment of the utility model relates to the technical field of automobiles, and discloses a steering wheel heating device and a vehicle. The steering wheel heating device provided by the utility model comprises a steering wheel which comprises a steering wheel heating pipe; the steering wheel pipeline comprises a steering wheel liquid inlet pipe and a steering wheel liquid outlet pipe, and the steering wheel liquid inlet pipe and the steering wheel liquid outlet pipe are both connected with the steering wheel; the conveying pipeline comprises a liquid conveying pipeline and a liquid discharging pipeline, the liquid conveying pipeline is connected with a liquid outlet of the heat production component, and the liquid discharging pipeline is connected with a liquid inlet of the radiator; the swivel joint comprises a fixed part and a follow-up part which are connected in a matched mode. Wherein the steering wheel liquid inlet pipe is communicated with the liquid conveying pipeline through the swivel joint, and the steering wheel liquid outlet pipe is communicated with the liquid discharging pipeline through the swivel joint. The steering wheel heating device heats the steering wheel by using heat generated by the vehicle, so that the energy utilization rate of the whole vehicle is improved while the operation sensitivity and the driving comfort of a driver are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of automobile technology, and in particular to a steering wheel heating device and a vehicle. Background Art

[0002] Some existing cars have a steering wheel heating function. When the weather is cold, the steering wheel is heated so that the driver's hands will not become stiff due to the low temperature of the steering wheel, which can improve the operating sensitivity and driving comfort and ensure driving safety.

[0003] At present, all steering wheels with heating function on the market are electrically heated. A resistance wire is built into the steering wheel, and the resistance wire is energized to generate heat to heat the steering wheel. However, electric heating will increase the power consumption of the whole vehicle, and the service life of the resistance wire is short. At the same time, the heat generated by the vehicle during operation is wasted because it is not reasonably used, and the energy consumption of the whole vehicle is high. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a steering wheel heating device and a vehicle. The steering wheel heating device utilizes the heat generated during the operation of the vehicle to heat the steering wheel, thereby improving the driver's operating sensitivity and driving comfort while improving energy utilization and saving energy consumption of the entire vehicle.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] On the one hand, an embodiment of the present application provides a steering wheel heating device, comprising: a steering wheel, comprising a steering wheel heating tube, the steering wheel heating tube having a steering wheel inlet and a steering wheel outlet; a steering wheel pipeline, comprising a steering wheel inlet tube and a steering wheel outlet tube, the outlet of the steering wheel inlet tube is connected to the steering wheel inlet, and the inlet of the steering wheel outlet tube is connected to the steering wheel outlet; a delivery pipeline, comprising an infusion pipeline and a drainage pipeline, the inlet of the infusion pipeline is connected to the outlet of the heat-generating component, and the outlet of the drainage pipeline is connected to the inlet of the radiator; a swivel joint, comprising a fixed part and a follower part that are matched and connected, the fixed part is fixedly connected to the steering column, and the follower part rotates with the steering wheel; wherein, the inlet of the steering wheel inlet tube is connected to the outlet of the infusion pipeline through the swivel joint, and the outlet of the steering wheel outlet tube is connected to the inlet of the drainage pipeline through the swivel joint.

[0007] The steering wheel heating device provided by the embodiment of the present application is provided with a steering wheel heating tube in the steering wheel, and a swivel joint is installed on the steering column, wherein the fixed part of the swivel joint is fixed to the steering column, and the follower part rotates with the steering wheel. The steering wheel inlet pipe is connected between the steering wheel inlet and the follower part of the steering wheel heating tube, and the infusion pipeline is connected between the fixed part and the outlet of the heat generating component, and the infusion pipeline is connected to the steering wheel inlet pipe. The steering wheel outlet pipe is connected between the steering wheel outlet and the follower part of the steering wheel heating tube, and the drainage pipeline is connected between the fixed part and the inlet of the radiator, and the drainage pipeline is connected to the steering wheel outlet pipe. In this way, the coolant discharged from the heat generating component can be drained to the steering wheel, and then circulated in the steering wheel heating tube and discharged to the radiator, so as to use the heat generated by the heat generating component to heat the steering wheel. In this way, while improving the driver's operating sensitivity and driving comfort, the energy utilization rate of the vehicle is improved, and the energy consumption of the whole vehicle is saved.

[0008] In a possible embodiment, the follower part is provided with a steering wheel liquid inlet channel and a steering wheel liquid outlet channel, and the fixed part is provided with a docking liquid inlet channel and a docking liquid outlet channel, the steering wheel liquid inlet channel is connected with the docking liquid inlet channel, and the steering wheel liquid outlet channel is connected with the docking liquid outlet channel; wherein, the inlet of the steering wheel liquid inlet pipe is connected with the steering wheel liquid inlet channel, and the outlet of the steering wheel liquid outlet pipe is connected with the steering wheel liquid outlet channel; the outlet of the infusion pipeline is connected with the docking liquid inlet channel, and the inlet of the discharge pipeline is connected with the docking liquid outlet channel.

[0009] Through the docking liquid inlet channel and the steering wheel liquid inlet channel on the swivel joint, the joint liquid inlet pipe and the steering wheel liquid inlet pipe can be connected to deliver the coolant discharged from the heat-generating component to the steering wheel. Through the steering wheel liquid outlet channel and the docking liquid outlet channel on the swivel joint, the steering wheel liquid outlet pipe and the joint liquid outlet pipe can be connected to deliver the coolant discharged from the steering wheel to the radiator.

[0010] In a possible implementation, the follower part and the fixed part together enclose an annular liquid inlet groove and an annular liquid outlet groove, and the annular liquid inlet groove and the annular liquid outlet groove are arranged at intervals inside and outside; wherein the steering wheel liquid inlet channel and the docking liquid inlet channel are both connected to the annular liquid inlet groove, and the steering wheel liquid outlet channel and the docking liquid outlet channel are both connected to the annular liquid outlet groove. In this way, no matter how the follower part rotates, the annular liquid inlet groove can make the steering wheel liquid inlet channel always connected to the docking liquid inlet channel, and the annular liquid outlet groove can make the steering wheel liquid outlet channel always connected to the docking liquid outlet channel.

[0011] In a possible implementation, a sealing ring is provided on the side of the annular liquid inlet groove facing away from the annular liquid outlet groove, on the side of the annular liquid outlet groove facing away from the annular liquid inlet groove, and between the annular liquid inlet groove and the annular liquid outlet groove. In this way, the annular liquid inlet groove and the annular liquid outlet groove can be sealed separately to ensure the sealing performance of the swivel joint and prevent the swivel joint from leaking.

[0012] In a possible implementation, the angle between the radius line where the steering wheel liquid inlet channel is located and the radius line where the steering wheel liquid outlet channel is located is less than 90 degrees. In this way, the distance between the steering wheel liquid inlet pipe and the steering wheel liquid outlet pipe is very small, and the steering wheel liquid inlet and the steering wheel liquid outlet can be arranged close to each other, extending the flow distance of the coolant in the steering wheel heating pipe, and improving the heating uniformity of the steering wheel.

[0013] In a possible implementation, the angle between the radius line where the steering wheel liquid inlet channel is located and the radius line where the steering wheel liquid outlet channel is located is greater than 0°. In this way, the steering wheel liquid inlet channel and the steering wheel liquid outlet channel are staggered front and back in the circumferential direction of the follower, and there is a sufficient distance between the steering wheel liquid inlet channel and the steering wheel liquid outlet channel, which is convenient for the installation of the steering wheel liquid inlet pipe and the steering wheel liquid outlet pipe.

[0014] In a possible embodiment, the liquid infusion pipeline includes a main liquid inlet pipe and a joint liquid inlet pipe, the inlet of the main liquid inlet pipe is connected to the liquid outlet of the heat generating component, the outlet of the joint liquid inlet pipe is connected to the swivel joint, and the inlet of the joint liquid inlet pipe passes through the front wall plate and is connected to the outlet of the main liquid inlet pipe; the liquid discharge pipeline includes a main liquid outlet pipe and a joint liquid outlet pipe, the outlet of the main liquid outlet pipe is connected to the liquid inlet of the radiator, the inlet of the joint liquid outlet pipe is connected to the swivel joint, and the outlet of the joint liquid outlet pipe passes through the front wall plate and is connected to the inlet of the main liquid outlet pipe.

[0015] By setting a total liquid inlet pipe in the front cabin and a joint liquid inlet pipe in the cockpit, the total liquid inlet pipe and the joint liquid inlet pipe are butted at the front wall plate to form a liquid delivery pipeline. In addition, a total liquid outlet pipe is set in the front cabin and a joint liquid outlet pipe is set in the cockpit, the total liquid outlet pipe and the joint liquid outlet pipe are butted at the front wall plate to form a liquid delivery pipeline. In this way, the layout and installation of the delivery pipeline are facilitated.

[0016] In a possible implementation, a plurality of reinforcing ribs are arranged at intervals along the circumferential direction in the steering wheel heating tube, and the reinforcing ribs are connected between the outer wall and the inner wall of the steering wheel heating tube. In this way, the rigidity of the steering wheel heating tube can be increased and the service life of the steering wheel heating tube can be extended.

[0017] In a possible embodiment, the steering wheel also includes: a steering wheel frame, a steering wheel heating tube wrapped around the outside of the steering wheel frame; a filling layer, arranged between the steering wheel frame and the steering wheel heating tube; a foaming layer, wrapped around the outside of the steering wheel heating tube; and an exterior layer, wrapped around the outside of the foaming layer.

[0018] On the other hand, an embodiment of the present application provides a vehicle, comprising the steering wheel heating device as described above.

[0019] The vehicle provided in the embodiment of the present application, since it includes the aforementioned steering wheel heating device, has all the technical effects of the steering wheel heating device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A partial structural diagram of a vehicle provided in an embodiment of the present application;

[0021] Figure 2 Another partial structural diagram of a vehicle provided in an embodiment of the present application;

[0022] Figure 3 Another partial structural diagram of a vehicle provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of a steering wheel heating device provided in an embodiment of the present application;

[0024] Figure 5 A cross-sectional view of a swivel joint provided in an embodiment of the present application;

[0025] Figure 6 A top view of a swivel joint provided in an embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of a steering wheel provided in an embodiment of the present application;

[0027] Figure 8 for Figure 7 The cross-sectional view of the steering wheel along line AA;

[0028] Fig. 9 for Figure 8 A partial enlarged view of point A on the steering wheel.

[0029] Reference numerals:

[0030] 100- Steering wheel;

[0031] 110-steering wheel frame; 120-steering wheel heating tube; 130-foaming layer; 140-exterior layer; 150-filling layer; 160-supplementary layer;

[0032] 121- reinforcing ribs;

[0033] 200-steering wheel pipe;

[0034] 210-steering wheel liquid inlet pipe; 220-steering wheel liquid outlet pipe;

[0035] 300-transmission pipeline;

[0036] 310-infusion pipeline; 320-drainage pipeline;

[0037] 311- total liquid inlet pipe; 312- joint liquid inlet pipe; 321- total liquid outlet pipe; 322- joint liquid outlet pipe;

[0038] 400-swivel joint;

[0039] 410-fixed part; 420-follower part;

[0040] 401-annular liquid inlet groove; 402-annular liquid outlet groove; 403-sealing ring; 411-docking liquid inlet channel; 412-docking liquid outlet channel; 421-steering wheel liquid inlet channel; 422-steering wheel liquid outlet channel;

[0041] 500 - steering column; 600 - front wall panel; 700 - heat generating component; 810 - first three-way valve; 811 - temperature sensor; 820 - second three-way valve; 900 - radiator; 1000 - liquid return pipe. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0043] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0044] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0045] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0047] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0048] The embodiment of the present application provides a vehicle, which may refer to a large car, a small car, a special-purpose car, etc. For example, according to the vehicle type, the vehicle in the present application may be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV) or other vehicle types. Generally, a vehicle is provided with wheels, a power source, and a transmission system provided between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, so that the wheels rotate, thereby driving the vehicle to travel.

[0049] It should be noted that in the embodiments of the present application, the type of the power source of the vehicle is not limited. For example, for a fuel vehicle, the power source may refer to a fuel engine such as a gasoline engine or a diesel engine; for an electric vehicle, the power source may refer to an electric motor; for a hybrid vehicle, the power source may refer to an engine or an electric motor; for a vehicle powered by other means, the power source may refer to a device that generates power.

[0050] As described in the background technology, the steering wheels with heating function on existing automobiles all adopt electric heating. By building a resistance wire into the steering wheel and energizing the resistance wire to make it heat up, the steering wheel is heated. However, the electric heating method will increase the power consumption of the whole vehicle, and the service life of the resistance wire is short. At the same time, the heat generated by the vehicle during operation is wasted because it is not reasonably used, resulting in high energy consumption of the whole vehicle.

[0051] In view of this, the embodiment of the present application provides a steering wheel heating device, which is provided with a steering wheel heating tube in the steering wheel, and a swivel joint is installed on the steering column, wherein the fixed part of the swivel joint is fixed to the steering column, and the follower part rotates with the steering wheel. By connecting the steering wheel inlet pipe between the steering wheel inlet and the follower part of the steering wheel heating tube, connecting the infusion pipeline between the fixed part and the outlet of the heat generating component, the infusion pipeline is connected to the steering wheel inlet pipe. The steering wheel outlet pipe is connected between the steering wheel outlet and the follower part of the steering wheel heating tube, and the drainage pipeline is connected between the fixed part and the inlet of the radiator, and the drainage pipeline is connected to the steering wheel outlet pipe. In this way, the coolant discharged from the heat generating component can be drained to the steering wheel, circulated in the steering wheel heating tube, and then discharged to the radiator, so as to use the heat generated by the heat generating component to heat the steering wheel. In this way, while improving the driver's operating sensitivity and driving comfort, the energy utilization rate of the vehicle is improved, and the energy consumption of the whole vehicle is saved.

[0052] The steering wheel heating device provided in the embodiment of the present application is described in detail below.

[0053] Figure 1 A partial structural diagram of a vehicle provided in an embodiment of the present application. Figure 2 Another partial structural diagram of the vehicle provided in an embodiment of the present application. Figure 3 This is another partial structural diagram of the vehicle provided in an embodiment of the present application.

[0054] Combination Figures 1 to 3 As shown, the steering wheel heating device provided in the embodiment of the present application includes a steering wheel 100, a steering wheel pipeline 200, a delivery pipeline 300 and a swivel joint 400. A steering wheel heating pipe 120 (see Figure 8 As shown in FIG. 1 , the steering wheel pipeline 200 is connected to the steering wheel heating pipe 120, and the delivery pipeline 300 is connected to the cooling system in the vehicle. The swivel joint 400 is installed on the steering column 500, and the steering wheel pipeline 200 and the delivery pipeline 300 are connected through the swivel joint 400.

[0055] The steering wheel heating pipe 120 is provided with a steering wheel liquid inlet and a steering wheel liquid outlet (not shown in the figure), the steering wheel pipeline 200 includes a steering wheel liquid inlet pipe 210 and a steering wheel liquid outlet pipe 220, and the delivery pipeline 300 includes a liquid delivery pipe 310 and a liquid discharge pipe 320. The inlet of the liquid delivery pipe 310 is connected to the heat generating component ( Figure 1-Figure 3The inlet of the steering wheel liquid outlet pipe 220 is connected to the steering wheel liquid outlet, the outlet of the steering wheel liquid outlet pipe 220 is connected to the swivel joint 400, the inlet of the steering wheel liquid inlet pipe 210 is connected to the swivel joint 400, the outlet of the steering wheel liquid inlet pipe 210 is connected to the steering wheel liquid inlet, and the inlet pipe 310 and the steering wheel liquid inlet pipe 210 are connected through the swivel joint 400. The inlet of the steering wheel liquid outlet pipe 220 is connected to the steering wheel liquid outlet, the outlet of the steering wheel liquid outlet pipe 220 is connected to the swivel joint 400, the inlet of the drain pipe 320 is connected to the swivel joint 400, and the outlet of the drain pipe 320 is connected to the radiator ( Figure 1-Figure 3 The steering wheel liquid outlet pipe 220 and the liquid discharge pipe 320 are connected through a swivel joint 400.

[0056] With such a configuration, the coolant in the cooling system of the vehicle cools down the heat-generating components, and the cooling temperature increases after heat exchange with the heat-generating components, and the increased temperature coolant is discharged from the liquid outlet of the heat-generating components. The coolant discharged from the heat-generating components passes through the liquid inlet pipe 310 and the steering wheel liquid inlet pipe 210, and is drained into the steering wheel heating pipe 120 through the steering wheel liquid inlet of the steering wheel heating pipe 120. The coolant circulates in the steering wheel heating pipe 120 and performs heat exchange with the steering wheel 100, thereby heating the steering wheel 100. Afterwards, the coolant is discharged from the steering wheel liquid outlet of the steering wheel heating pipe 120, and the coolant flows through the steering wheel liquid outlet pipe 220 and the liquid discharge pipe 320 in turn, and enters the radiator through the liquid inlet of the radiator. After the radiator dissipates heat and cools down the coolant, it transports the coolant with a lowered temperature to the heat-generating components that need to dissipate heat, and the cycle continues.

[0057] In this way, the steering wheel 100 is added to the cooling system of the vehicle, and the steering wheel 100 is heated by the heat generated by the heat-generating components, which can improve the driver's operating sensitivity and driving comfort. Compared with the traditional method of heating the steering wheel 100 with a resistance wire, the steering wheel 100 is heated by using the heat in the cooling system of the whole vehicle. This method of heating the steering wheel 100 has better stability and higher reliability, and can extend the service life of the steering wheel heating device. In addition, this method of heating the steering wheel 100 realizes the rational use of the heat generated by the vehicle during operation, improves the energy utilization rate of the vehicle, and saves the energy consumption of the whole vehicle.

[0058] When the steering wheel heating device is applied to a new energy vehicle, the heat generated by the heat generating component is used to heat the steering wheel 100 instead of the resistance wire, which can reduce the power consumption of the whole vehicle. The steering wheel heating device provides effective energy-saving support to increase the vehicle's cruising range, especially for long-distance driving in winter.

[0059] It should be noted that this embodiment does not limit the heat source of the steering wheel heating device, that is, there is no specific limitation on the heat-generating components. For example, the heat-generating components may be components such as motors, heaters, and air conditioners in the vehicle that generate a lot of heat during operation. When the steering wheel heating device is used in new energy vehicles, the heat-generating components may be battery packs.

[0060] Furthermore, there may be only one heat-generating component for providing heat to the steering wheel 100, and the infusion pipe 310 may be connected to the liquid outlet of only one heat-generating component. For example, the heat-generating component is selected from a battery pack, a motor, a heater, and an air conditioner. Alternatively, there may be more than two heat-generating components for providing heat to the steering wheel 100, and the infusion pipe 310 may be connected to the liquid outlets of more than two heat-generating components. For example, the inlet of the infusion pipe 310 may be connected to the liquid outlets of more than two heat-generating components in a battery pack, a motor, a heater, and an air conditioner.

[0061] Among them, refer to Figure 1 or Figure 2 As shown, the swivel joint 400 installed on the steering column 500 may include a fixed portion 410 and a follower portion 420, and the fixed portion 410 and the follower portion 420 are matched and connected. The fixed portion 410 is fixedly connected to the steering column 500, and the follower portion 420 can rotate synchronously with the steering wheel 100. Exemplarily, the fixed portion 410 and the follower portion 420 can be coaxially arranged, the fixed portion 410 can be sleeved on the outside of the follower portion 420, and the follower portion 420 rotates under the limiting and guiding action of the fixed portion 410. Among them, the follower portion 420 can be located on the side of the fixed portion 410 facing the steering wheel 100, the delivery pipeline 300 is connected to the fixed portion 410, and the steering wheel pipeline 200 is connected to the follower portion 420.

[0062] By setting the swivel joint 400, the fixed part 410 of the swivel joint 400 can relatively fix the delivery pipeline 300, thereby ensuring the stability and reliability of the delivery pipeline 300. The follower part 420 of the swivel joint 400 can rotate with the steering wheel 100, and the steering wheel pipeline 200 connected between the steering wheel 100 and the follower part 420 can move to the corresponding position with the rotation of the steering wheel 100. In this way, the steering wheel pipeline 200 can be prevented from being entangled, dead folded, and other problems, ensuring that the steering wheel pipeline 200 can reliably transmit the coolant. In addition, there is no need to reserve too much redundant length for the steering wheel pipeline 200 or design the steering wheel pipeline 200 into a spiral structure in order to meet the rotation stroke of the steering wheel 100, which can simplify the design method of the steering wheel pipeline 200.

[0063] The infusion pipe 310 and the drainage pipe 320 are both connected to the fixed part 410, and the steering wheel inlet pipe 210 and the steering wheel outlet pipe 220 are both connected to the follower part 420. In addition, the infusion pipe 310 is connected to the steering wheel inlet pipe 210, and the drainage pipe 320 is connected to the steering wheel outlet pipe 220.

[0064] Combination Figure 2 and Figure 3 As shown, in some embodiments, the heat generating component and the radiator can be both arranged at the corresponding position of the front cabin. Taking the heat generating component as a battery pack as an example, the battery pack can be installed in the area corresponding to the front cabin on the chassis. The radiator can be directly arranged in the front cabin. At this time, the delivery pipeline 300 needs to pass through the front wall panel 600 between the front cabin and the cockpit, be introduced into the cockpit, and then be connected to the swivel joint 400 located in the cockpit.

[0065] In this regard, the infusion pipeline 310 and the drainage pipeline 320 can be composed of two parts, one part can be set in the front cabin, and the other part can be set in the cockpit. The two parts are connected at the front wall panel 600 to facilitate the layout and installation of the delivery pipeline 300.

[0066] The liquid infusion pipeline 310 may include a main liquid inlet pipe 311 and a joint liquid inlet pipe 312. The main liquid inlet pipe 311 is arranged in the front cabin, and the joint liquid inlet pipe 312 is arranged in the cockpit. The inlet of the main liquid inlet pipe 311 is connected to the liquid outlet of the heat generating component, the inlet of the joint liquid inlet pipe 312 passes through the through hole arranged on the front wall plate 600 and is connected to the outlet of the main liquid inlet pipe 311, and the outlet of the joint liquid inlet pipe 312 is connected to the fixed part 410 of the swivel joint 400.

[0067] Similarly, the liquid discharge pipe 320 may include a main liquid outlet pipe 321 and a joint liquid outlet pipe 322. The main liquid outlet pipe 321 is arranged in the front cabin, and the joint liquid outlet pipe 322 is arranged in the cockpit. The inlet of the joint liquid outlet pipe 322 is connected to the fixed portion 410 of the swivel joint 400, and the outlet of the joint liquid outlet pipe 322 is connected to the inlet of the main liquid outlet pipe 321 through the through hole arranged on the front wall plate 600, and the outlet of the main liquid outlet pipe 321 is connected to the liquid inlet of the radiator.

[0068] Figure 4 This is a schematic diagram of a steering wheel heating device provided in an embodiment of the present application. Figure 3 and Figure 4As shown, the liquid outlet of the heat generating component 700 may be connected to a first three-way valve 810, one liquid outlet of the first three-way valve 810 is connected to the liquid inlet of the radiator 900, and the other liquid outlet of the first three-way valve 810 is connected to the swivel joint 400 through the liquid infusion pipeline 310, and part of the coolant discharged from the heat generating component 700 is drained to the steering wheel 100 through the swivel joint 400. In addition, a temperature sensor 811 may be provided at the liquid outlet of the heat generating component, and the temperature sensor 811 is integrated on the first three-way valve 810, for example. The temperature of the coolant discharged from the heat generating component 700 is detected by the temperature sensor 811 to ensure that the coolant drained to the steering wheel 100 has a suitable temperature, so as to prevent the temperature of the drained coolant from being too low and failing to effectively heat the steering wheel 100.

[0069] Taking the steering wheel heating device applied to a new energy vehicle, and the heat generating component 700 being a battery pack as an example, the temperature of the coolant at the liquid outlet of the battery pack is usually 40°C to 42°C, and is basically concentrated at 40.5°C, which can meet the heating requirements of the steering wheel 100. When the steering wheel 100 needs to be heated, the temperature sensor 811 at the liquid outlet of the battery pack detects that the temperature of the coolant reaches 40°C, and then controls the first three-way valve 810 to be connected to the liquid infusion pipeline 310, and part of the coolant of the battery pack is throttled through the first three-way valve 810, and the liquid infusion pipeline 310 guides part of the coolant through the rotary joint 400 to the steering wheel heating pipe 120 to heat the steering wheel 100.

[0070] Continue to refer to Figure 3 and Figure 4 , similar to the first three-way valve 810 provided at the liquid outlet of the heat generating component 700, the liquid inlet of the radiator 900 may also be connected to a second three-way valve 820. The swivel joint 400 is connected to one liquid inlet of the second three-way valve 820 through the liquid discharge pipe 320, and the other liquid inlet of the second three-way valve 820 is connected to the liquid return pipe 1000 of the heat generating component 700 in the vehicle. In this way, the coolant discharged from the steering wheel 100 and the coolant discharged from the heat generating component 700 can be transported to the radiator 900. Among them, the liquid return pipe 1000 can be connected to the liquid outlets of all the heat generating components 700 in the vehicle, and the coolant discharged from all the heat generating components 700 can be transported to the radiator through the liquid return pipe 1000.

[0071] Figure 5 This is a cross-sectional view of a swivel joint provided in an embodiment of the present application. Figure 5As shown, the fixed part 410 of the swivel joint 400 is provided with a docking liquid inlet channel 411 and a docking liquid outlet channel 412, the outlet of the joint liquid inlet pipe 312 is connected to the docking liquid inlet channel 411, and the inlet of the joint liquid outlet pipe 322 is connected to the docking liquid outlet channel 412. The following part 420 of the swivel joint 400 is provided with a steering wheel liquid inlet channel 421 and a steering wheel liquid outlet channel 422, the inlet of the steering wheel liquid inlet pipe 210 is connected to the steering wheel liquid inlet channel 421, and the outlet of the steering wheel liquid outlet pipe 220 is connected to the steering wheel liquid outlet channel 422. Among them, the docking liquid inlet channel 411 on the fixed part 410 is connected to the steering wheel liquid inlet channel 421 on the following part 420, and the docking liquid outlet channel 412 on the fixed part 410 is connected to the steering wheel liquid outlet channel 422 on the following part 420.

[0072] In this way, the joint inlet pipe 312 and the steering wheel inlet pipe 210 can be connected through the docking inlet channel 411 and the steering wheel inlet channel 421 on the swivel joint 400, so that the coolant discharged from the heat-generating component can be delivered to the steering wheel 100. The steering wheel outlet pipe 220 and the joint outlet pipe 322 can be connected through the steering wheel outlet channel 422 and the docking outlet channel 412 on the swivel joint 400, so that the coolant discharged from the steering wheel 100 can be delivered to the radiator.

[0073] Continue to refer to Figure 5 Since the follower 420 rotates relative to the fixed part 410, in order to make the steering wheel liquid inlet channel 421 and the docking liquid inlet channel 411 always connected, and the steering wheel liquid outlet channel 422 and the docking liquid outlet channel 412 always connected, in this embodiment, the follower 420 and the fixed part 410 jointly enclose an annular liquid inlet groove 401 and an annular liquid outlet groove 402, the steering wheel liquid inlet channel 421 and the docking liquid inlet channel 411 are both connected to the annular liquid inlet groove 401, and the steering wheel liquid outlet channel 422 and the docking liquid outlet channel 412 are both connected to the annular liquid outlet groove 402. In this way, no matter how the follower 420 rotates, the steering wheel liquid inlet channel 421 is always connected to the docking liquid inlet channel 411, and the steering wheel liquid outlet channel 422 is always connected to the docking liquid outlet channel 412.

[0074] Among them, for the annular liquid inlet groove 401, a side surface of the fixed part 410 facing the follower part 420 may be provided with an annular lower liquid inlet groove, and a side surface of the follower part 420 facing the fixed part 410 may be provided with an annular upper liquid inlet groove, and the lower liquid inlet groove and the upper liquid inlet groove together enclose the annular liquid inlet groove 401. Similarly, for the annular liquid outlet groove 402, a side surface of the fixed part 410 facing the follower part 420 may be provided with an annular lower liquid outlet groove, and a side surface of the follower part 420 facing the fixed part 410 may be provided with an annular upper liquid outlet groove, and the lower liquid outlet groove and the upper liquid outlet groove together enclose the annular liquid outlet groove 402.

[0075] The annular liquid inlet groove 401 and the annular liquid outlet groove 402 are coaxially arranged, and the center lines of the two can coincide with the axis of the steering shaft. In this way, no matter how the follower 420 rotates, the steering wheel liquid inlet channel 421 is always on the contour track of the annular liquid inlet groove 401, and the steering wheel liquid outlet channel 422 is always on the contour track of the annular liquid outlet groove 402. In addition, the annular liquid inlet groove 401 and the annular liquid outlet groove 402 can be arranged with internal and external spacing, and the radius of the annular liquid inlet groove 401 is different from the radius of the annular liquid outlet groove 402, so as to separate the liquid inlet route and the liquid outlet route in the rotary joint 400, ensure the accuracy and uniqueness of the circulation route of the coolant, and ensure the stability and reliability of the steering wheel heating device.

[0076] like Figure 5 As shown, the figure takes the example of the annular liquid inlet groove 401 being arranged around the outer periphery of the annular liquid outlet groove 402, and the radius of the annular liquid inlet groove 401 is greater than the radius of the annular liquid outlet groove 402. At this time, the docking liquid inlet channel 411 and the steering wheel liquid inlet channel 421 are both connected to the large-radius annular groove located on the outside, and the docking liquid outlet channel 412 and the steering wheel liquid outlet channel 422 are both connected to the small-radius annular groove located on the inside. Of course, the annular liquid outlet groove 402 can also be arranged around the outer periphery of the annular liquid inlet groove 401, and the radius of the annular liquid outlet groove 402 is greater than the radius of the annular liquid inlet groove 401, and this embodiment does not limit this.

[0077] Between the contact surfaces of the fixed part 410 and the follower part 420, a sealing ring 403 is provided on the side of the annular liquid inlet groove 401 away from the annular liquid outlet groove 402, a sealing ring 403 is also provided on the side of the annular liquid outlet groove 402 away from the annular liquid inlet groove 401, and a sealing ring 403 is also provided between the liquid inlet groove and the annular liquid outlet groove 402. In this way, the annular liquid inlet groove 401 and the annular liquid outlet groove 402 can be sealed separately to ensure the sealing performance of the rotary joint 400, avoid leakage of the rotary joint 400, and improve the reliability and safety of the steering wheel heating device.

[0078] Figure 6 This is a top view of a swivel joint provided in an embodiment of the present application. Figure 6 As shown, in some embodiments, the angle α between the radius line R1 where the steering wheel inlet channel 421 is located and the radius line R2 where the steering wheel outlet channel 422 is located can be less than 90°. In this way, the steering wheel inlet channel 421 and the steering wheel outlet channel 422 are arranged on the same side of the follower 420. Taking the paper direction shown in the figure as an example, the steering wheel inlet channel 421 and the steering wheel outlet channel 422 are both located on the left side of the follower 420. In addition, the spacing between the steering wheel inlet channel 421 and the steering wheel outlet channel 422 in the circumferential direction of the follower 420 is very small.

[0079] In this way, the distance between the steering wheel liquid inlet pipe 210 and the steering wheel liquid outlet pipe 220 is very small, and the distance between the steering wheel liquid inlet pipe 210 and the steering wheel liquid outlet pipe 220 corresponding to the steering wheel 100 can also be very small, and the steering wheel liquid inlet and the steering wheel liquid outlet on the steering wheel heating pipe 120 can be arranged close to each other. The flow path of the coolant in the steering wheel heating pipe 120 can be extended, and the coolant can basically circulate a full circle in the steering wheel 100, so as to improve the heating uniformity of the steering wheel 100.

[0080] Continue to refer to Figure 6 On this basis, the angle α between the radius line R1 where the steering wheel inlet channel 421 is located and the radius line R2 where the steering wheel outlet channel 422 is located can be greater than 0°. In other words, the steering wheel inlet channel 421 and the steering wheel outlet channel 422 are not on the same radius line, and the steering wheel inlet channel 421 and the steering wheel outlet channel 422 are staggered front and back in the circumferential direction of the follower 420. In this way, a sufficient spacing can be reserved between the steering wheel inlet channel 421 and the steering wheel outlet channel 422 to facilitate the installation of the steering wheel inlet pipe 210 and the steering wheel outlet pipe 220.

[0081] For the sake of convenience in installation, the docking liquid inlet channel 411 and the docking liquid outlet channel 412 can be respectively arranged on both sides of the fixing portion 410. Figure 6 Taking the paper direction shown in as an example, the docking liquid inlet channel 411 is located on the right side of the fixing portion 410, and the docking liquid outlet channel 412 is located on the left side of the fixing portion 410. In this way, the distance between the docking liquid inlet channel 411 and the docking liquid outlet channel 412 is large, which facilitates the installation of the joint liquid inlet pipe 312 and the joint liquid outlet pipe 322.

[0082] Figure 7 A schematic diagram of the structure of a steering wheel provided in an embodiment of the present application. Figure 8 for Figure 7 Cross-sectional view of the steering wheel along line AA. Fig. 9 for Figure 8 A partial enlarged view of point A on the steering wheel.

[0083] Reference Figure 7-Figure 9 As shown, the steering wheel 100 is supported by the steering wheel frame 110, and the steering wheel heating tube 120 can be wrapped on the outside of the steering wheel frame 110. In addition, the outside of the steering wheel heating tube 120 is also wrapped with a foam layer 130 and an outer layer 140 in sequence. The outer layer 140 is the outermost structure of the steering wheel 100, which is generally a leather layer, which can make the steering wheel 100 more beautiful, and the leather layer is moderately soft and has good anti-slip performance, which can meet the operation requirements of the steering wheel 100. The foam layer 130 is arranged between the steering wheel heating tube 120 and the outer layer 140. The foam layer 130 is usually thicker and has good flexibility, which can improve the grip comfort of the steering wheel 100.

[0084] The steering wheel frame 110 is usually made of metal material, for example, the steering wheel frame 110 is an aluminum alloy frame. Although the cross-section of the steering wheel 100 as a whole is usually a smooth circle or oval, the cross-section of the steering wheel frame 110 is usually processed into a flat shape due to material limitations. Therefore, a filling layer 150 is usually provided between the steering wheel frame 110 and the steering wheel heating tube 120. The filling layer 150 is used to make up for the contour shape of the steering wheel frame 110, shape the square wheel, and facilitate wrapping the steering wheel heating tube 120, the foaming layer 130, the exterior layer 140 and other structural layers outside the filling layer 150.

[0085] In some embodiments, a supplementary layer 160 may be provided between the foam layer 130 and the outer layer 140 in the steering wheel 100. The supplementary layer 160 is also generally made of a flexible material. The supplementary layer 160 increases the volume of the steering wheel 100 and makes the flexible structural layer of the steering wheel 100 have a sufficient thickness to improve the grip comfort of the steering wheel 100. Of course, when the foam layer 130 has a sufficient thickness, the supplementary layer 160 may not be provided between the foam layer 130 and the outer layer 140.

[0086] Reference Fig. 9 As shown, as an embodiment, a plurality of reinforcing ribs 121 may be provided in the steering wheel heating tube 120, and the reinforcing ribs 121 may be provided at intervals along the circumference of the steering wheel heating tube 120. One end of the reinforcing rib 121 is connected to the outer wall of the steering wheel heating tube 120, and the other end of the reinforcing rib 121 is connected to the inner wall of the steering wheel heating tube 120. By providing the reinforcing rib 121, the rigidity of the steering wheel heating tube 120 may be increased, the structural strength of the steering wheel heating tube 120 may be higher, the reliability may be better, and the service life of the steering wheel heating tube 120 may be extended.

[0087] Among them, the reinforcing rib 121 can separate a plurality of cavities in the steering wheel heating tube 120, and each cavity can be located at a different circumferential position of the steering wheel heating tube 120, and the coolant can flow in each cavity. In this way, the coolant can be distributed more evenly in the circumferential direction of the steering wheel heating tube 120 to enhance the heating uniformity of the steering wheel 100. Of course, at the location of the steering wheel liquid inlet and the steering wheel liquid outlet, each cavity is connected so that the coolant can enter each cavity and the coolant in each cavity can be discharged.

[0088] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A steering wheel heating device, characterized in that: include: A steering wheel (100) comprises a steering wheel heating tube (120), wherein the steering wheel heating tube (120) has a steering wheel liquid inlet and a steering wheel liquid outlet; A steering wheel pipeline (200) comprises a steering wheel liquid inlet pipe (210) and a steering wheel liquid outlet pipe (220), wherein the outlet of the steering wheel liquid inlet pipe (210) is connected to the steering wheel liquid inlet port, and the inlet of the steering wheel liquid outlet pipe (220) is connected to the steering wheel liquid outlet port; The delivery pipeline (300) comprises a liquid delivery pipeline (310) and a liquid discharge pipeline (320), wherein the inlet of the liquid delivery pipeline (310) is connected to the liquid outlet of the heat generating component (700), and the outlet of the liquid discharge pipeline (320) is connected to the liquid inlet of the radiator (900); The swivel joint (400) comprises a fixed portion (410) and a follower portion (420) which are matched and connected, wherein the fixed portion (410) is fixedly connected to the steering column (500), and the follower portion (420) rotates with the steering wheel (100); The inlet of the steering wheel liquid inlet pipe (210) is connected to the outlet of the liquid infusion pipe (310) through the swivel joint (400), and the outlet of the steering wheel liquid outlet pipe (220) is connected to the inlet of the liquid discharge pipe (320) through the swivel joint (400).

2. The steering wheel heating device according to claim 1, characterized in that: The follower part (420) is provided with a steering wheel liquid inlet channel (421) and a steering wheel liquid outlet channel (422); the fixed part (410) is provided with a docking liquid inlet channel (411) and a docking liquid outlet channel (412); the steering wheel liquid inlet channel (421) is communicated with the docking liquid inlet channel (411); and the steering wheel liquid outlet channel (422) is communicated with the docking liquid outlet channel (412); The inlet of the steering wheel liquid inlet pipe (210) is connected to the steering wheel liquid inlet channel (421), and the outlet of the steering wheel liquid outlet pipe (220) is connected to the steering wheel liquid outlet channel (422); the outlet of the infusion pipeline (310) is connected to the docking liquid inlet channel (411), and the inlet of the discharge pipeline (320) is connected to the docking liquid outlet channel (412).

3. The steering wheel heating device according to claim 2, characterized in that: The follower portion (420) and the fixed portion (410) together enclose an annular liquid inlet groove (401) and an annular liquid outlet groove (402), and the annular liquid inlet groove (401) and the annular liquid outlet groove (402) are arranged with an interval inside and outside; Wherein, the steering wheel liquid inlet channel (421) and the docking liquid inlet channel (411) are both connected to the annular liquid inlet groove (401), and the steering wheel liquid outlet channel (422) and the docking liquid outlet channel (412) are both connected to the annular liquid outlet groove (402).

4. The steering wheel heating device according to claim 3, characterized in that: A sealing ring (403) is provided on one side of the annular liquid inlet groove (401) facing away from the annular liquid outlet groove (402), on one side of the annular liquid outlet groove (402) facing away from the annular liquid inlet groove (401), and between the annular liquid inlet groove (401) and the annular liquid outlet groove (402).

5. The steering wheel heating device according to any one of claims 2 to 4, characterized in that: The angle between the radius line where the steering wheel liquid inlet channel (421) is located and the radius line where the steering wheel liquid outlet channel (422) is located is less than 90°.

6. The steering wheel heating device according to claim 5, characterized in that: The angle between the radius line where the steering wheel liquid inlet channel (421) is located and the radius line where the steering wheel liquid outlet channel (422) is located is greater than 0°.

7. The steering wheel heating device according to any one of claims 1 to 4, characterized in that: The liquid infusion pipeline (310) comprises a main liquid inlet pipe (311) and a joint liquid inlet pipe (312); the inlet of the main liquid inlet pipe (311) is connected to the liquid outlet of the heat generating component (700); the outlet of the joint liquid inlet pipe (312) is connected to the swivel joint (400); and the inlet of the joint liquid inlet pipe (312) passes through the front wall plate (600) and is connected to the outlet of the main liquid inlet pipe (311); The liquid discharge pipe (320) comprises a main liquid outlet pipe (321) and a joint liquid outlet pipe (322); the outlet of the main liquid outlet pipe (321) is connected to the liquid inlet of the radiator (900); the inlet of the joint liquid outlet pipe (322) is connected to the swivel joint (400); and the outlet of the joint liquid outlet pipe (322) passes through the front wall plate (600) and is connected to the inlet of the main liquid outlet pipe (321).

8. The steering wheel heating device according to any one of claims 1 to 4, characterized in that: A plurality of reinforcing ribs (121) are arranged at intervals along the circumferential direction in the steering wheel heating tube (120), and the reinforcing ribs (121) are connected between the outer wall and the inner wall of the steering wheel heating tube (120).

9. The steering wheel heating device according to any one of claims 1 to 4, characterized in that: The steering wheel (100) further comprises: A steering wheel frame (110), wherein the steering wheel heating tube (120) is wrapped around the outside of the steering wheel frame (110); A filling layer (150) is arranged between the steering wheel frame (110) and the steering wheel heating tube (120); A foaming layer (130) wrapped around the outside of the steering wheel heating tube (120); The outer decoration layer (140) is wrapped around the outside of the foaming layer (130).

10. A vehicle, characterized in that: The invention comprises a steering wheel heating device as claimed in any one of claims 1 to 9.

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