Non-contact heatable steering wheel handle sleeve

Abstract

The utility model discloses a non-contact heatable steering wheel handle sleeve. The non-contact heatable steering wheel handle sleeve comprises a transmitting part, a receiving part and a steering wheel handle sleeve part, the structure is characterized in that a power supply is led into the wireless transmission device through the vehicle-mounted cigarette lighter port, dynamic transmission of electric energy is achieved in a wireless mode through the transmitting part and the receiving part, the wireless transmission device provides the power supply for the handlebar sleeve heating piece, the steering wheel is heated through the handlebar sleeve heating piece, and therefore modification of an automobile circuit is reduced, and the automobile safety is improved. And the driving comfort and safety are improved. When a driver uses the device, driving cannot be affected by interference of a connecting line, and the device is convenient to install and convenient and safe to use.

Description

Technical Field

[0001] The utility model belongs to the field of automobile accessories, and in particular relates to a non-contact heated steering wheel grip. Background Art

[0002] Most cars are equipped with air conditioning and heating systems, but they are often idle, and it takes considerable time for the heating system to warm the steering wheel. The driver's direct contact with the car is limited to their hands on the steering wheel and shifter, so steering wheel comfort impacts overall driving comfort. Existing steering wheel heating systems are standard on luxury cars and are not found in budget vehicles. Especially for cars without garages, which are often parked outdoors in winter, a cold steering wheel can significantly impact driving comfort. There are technical options for heated steering wheels, which can address the need for heated steering wheels, but these solutions still rely on utilizing or modifying the existing steering wheel's spare spring to power the steering wheel heating circuit. This method requires removing the steering wheel and part of the interior, and also requires modifying the original circuit of the car. It also involves changing the load of the original vehicle circuit, which can easily cause the circuit to be overloaded and heated severely, thereby causing serious consequences such as spontaneous combustion of the circuit. In addition, the existing steering wheel heater needs to be connected to the car with a power cord. The driver is easily disturbed by the power cord during driving, which is quite inconvenient to use and will also bring unnecessary safety hazards to driving work to a certain extent. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a non-contact heated steering wheel grip which can reduce modification of automobile circuits, improve driving comfort and safety, and realize dynamic transmission of electric energy in a wireless manner.

[0004] In order to solve the above technical problems, the utility model is achieved as follows:

[0005] A non-contact heated steering wheel grip, comprising a transmitting part, a receiving part and a steering wheel grip component;

[0006] The transmitting part includes a driving module and a transmitting coil; the receiving part includes a receiving coil and a signal conditioning circuit; the signal input end of the driving module is connected to the vehicle power supply; the signal output end of the driving module is connected to the transmitting coil; the signal output end of the receiving coil is connected to the signal input end of the signal conditioning circuit; the signal output end of the signal conditioning circuit is connected to the grip heating plate inside the steering wheel grip component.

[0007] Furthermore, the driving module of the present invention includes a boost module and a transmitting module; the signal transmission port of the boost module is connected to the signal transmission port of the transmitting coil via the transmitting module; the signal conditioning circuit includes a receiving module, a rectifier module and a voltage stabilizing module; the signal transmission port of the receiving module is connected to the signal transmission port of the voltage stabilizing module via the rectifier module.

[0008] As another preferred solution, the driving module of the present invention includes a filtering current limiting circuit, a transmitting voltage stabilizing circuit, a pulse width modulation part, an oscillation part and a switch part; the signal input end of the filtering current limiting circuit is connected to the vehicle power supply; the signal output end of the filtering current limiting circuit is connected to the signal input end of the transmitting voltage stabilizing circuit; the signal output end of the transmitting voltage stabilizing circuit is connected to the signal input end of the pulse width modulation part; the signal output end of the pulse width modulation part is connected to the signal input end of the oscillation part; the signal output end of the oscillation part is connected to the signal input end of the switch part; and the signal output end of the switch part is connected to the signal input end of the transmitting coil.

[0009] Furthermore, the utility model is also provided with a feedback part; ports of the feedback part are respectively connected to ports of the transmitting coil and the pulse width modulation part.

[0010] Furthermore, the steering wheel grip component of the present invention includes a plastic keel, a heating plate and a surface foreskin; the grip heating plate is fixed on the plastic keel; and the surface foreskin covers the grip heating plate and the plastic keel.

[0011] Furthermore, the transmitting part of the utility model is placed in a transmitting disk; the receiving part is placed in a receiving disk; the transmitting disk is fixedly connected to the end of the clamp via a flexible connecting tube; the clamp is fixedly arranged in the vehicle body; a power transmission line is sleeved in the flexible connecting tube; one end of the power transmission line is connected to the vehicle power supply, and the other end is connected to the signal input end of the drive module; the receiving disk is fixed on the movable base at the bottom of the steering wheel and corresponds to the position of the transmitting disk.

[0012] Furthermore, the flexible connecting pipe of the present invention is a foldable and bendable metal hollow hose.

[0013] Furthermore, the vehicle-mounted power supply of the present invention is a cigarette lighter.

[0014] Furthermore, the clamp of the present invention is an I-shaped clamp.

[0015] Furthermore, the grip heating plate of the present invention adopts electric heating cloth; the electric heating cloth includes a layer of glass fiber cloth; both sides of the glass fiber cloth are coated with a conductive layer; and electrodes are embedded in the conductive layer.

[0016] This utility model directs power to the wireless transmission device through the vehicle's cigarette lighter port, achieving dynamic wireless power transmission. The wireless transmission device then provides power to the grip heater, which then heats the steering wheel. This reduces vehicle wiring modifications and improves driving comfort and safety. The driver is not affected by interference from connecting wires, making the device easy to install, convenient, and safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the non-contact heated steering wheel grip of the utility model;

[0018] Figure 2 This is a circuit diagram of the power supply part of the utility model;

[0019] Figure 3 This is a circuit principle block diagram of one implementation method of the power supply part of the utility model;

[0020] Figure 4 This is a circuit principle block diagram of another implementation scheme of the power supply part of the utility model.

[0021] In the figure: 1. Transmitting part; 2. Receiving part; 2-1. Driving module; 2-2. Signal conditioning circuit; 3. Transmitting coil; 3-1. Boost module; 3-2. Transmitting module; 3-3. Receiving module; 3-4. Rectifier module; 3-5. Voltage stabilizing module; 4. Receiving coil; 4-1. Receiving voltage stabilizing part; 4-2. Rectifier part; 4-3. Filter and current limiting circuit; 4-4. Transmitting voltage stabilizing part; 4-5. Pulse width modulation part; 4-6. Oscillation part; 4-7. Switch part; 4-8. Feedback part; 5. Steering wheel grip cover parts; 6. Screws; 7. Transmitting disk; 8. Receiving disk; 9. Flexible connecting pipe; 10. Clamp; 11. Power transmission line; 12. Plastic keel; 13. Grip heating plate; 14. Surface foreskin; 15. On-board power supply. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below through specific examples. These examples are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. As mentioned throughout the specification and claims, "including" or "comprising" is an open-ended term and is interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0023] See also Figure 1 、 Figure 2As shown, the non-contact heated steering wheel grip includes a transmitting part 1, a receiving part 2 and a steering wheel grip component 5;

[0024] The transmitting portion 1 includes a driver module 2-1 and a transmitting coil 3; the receiving portion 2 includes a receiving coil 4 and a signal conditioning circuit. The signal input of the driver module 2-1 is connected to the vehicle power supply 15; the signal output of the driver module 2-1 is connected to the transmitting coil 3; the signal output of the receiving coil 4 is connected to the signal input of the signal conditioning circuit 2-2; and the signal output of the signal conditioning circuit 2-2 is connected to the steering wheel grip heater 13 within the steering wheel grip assembly 5. The driver module 2-1 outputs high-frequency pulses to the transmitting coil 3 based on the load. The transmitting coil 3 converts the high-frequency pulses into resonant electromagnetic waves and transmits them to the receiving coil 4. After receiving the electromagnetic waves, the receiving coil 4 outputs direct current through the signal conditioning circuit 2-2 for use by the grip heater.

[0025] See also Figure 3 As shown, the driving module 2-1 includes a boost module 3-1 and a transmitting module 3-2; the signal transmission port of the boost module 3-1 is connected to the signal transmission port of the transmitting coil 3 via the transmitting module 3-2; the signal conditioning circuit 2-2 includes a receiving module 3-3, a rectifier module 3-4 and a voltage stabilizing module 3-5; the signal transmission port of the receiving module 3-3 is connected to the signal transmission port of the voltage stabilizing module 3-5 via the rectifier module 3-4.

[0026] The power supply of this utility model is divided into two parts: the transmitting part and the receiving part. The wireless transmission of power is achieved through the coordinated work of the two parts. The maximum power can reach 50W. The specific design method is as follows:

[0027] Transmitter: The power supply of this utility model is connected to the vehicle's 12V power supply (such as the car's own cigarette lighter or fuse box) as the input part of the power supply, and the 12V voltage is boosted to 24V by a boost IC (such as MPQ346). Then, the transmitting IC: WP3510, WPT512A, WPT8070M, as well as electronic components such as inductors and capacitors are combined to form the transmitting end part.

[0028] Receiving part: Receives electromagnetic waves from the transmitter through the inductor, IC:MBRD20100CT and NPO capacitor, inputs IC:WPT6035DDA, and outputs a stable 24V power supply after rectification by WPT6035DDA.

[0029] See also Figure 4As shown, the driving module 2-1 includes a filtering current limiting circuit 4-3, a transmitting voltage stabilizing circuit 4-4, a pulse width modulation part 4-5, an oscillation part 4-6 and a switch part 4-7; the signal input end of the filtering current limiting circuit 4-3 is connected to the vehicle power supply; the signal output end of the filtering current limiting circuit 4-3 is connected to the signal input end of the transmitting voltage stabilizing circuit 4-4; the signal output end of the transmitting voltage stabilizing circuit 4-4 is connected to the signal input end of the pulse width modulation part 4-5; the signal output end of the pulse width modulation part 4-5 is connected to the signal input end of the oscillation part 4-6; the signal output end of the oscillation part 4-6 is connected to the signal input end of the switch part 4-7; the signal output end of the switch part 4-7 is connected to the signal input end of the transmitting coil 3.

[0030] See also Figure 4 As shown, the driving module 2-1 of the present invention is further provided with a feedback part 4-8; the ports of the feedback part are respectively connected to the ports of the transmitting coil 3 and the pulse width modulation part.

[0031] See also Figure 1 As shown, the steering wheel grip assembly 5 of the present invention includes a plastic keel 12, a grip heating plate 13, and a surface covering 14. The grip heating plate 13 is fixedly mounted on the plastic keel 12, and the surface covering 14 covers the grip heating plate 13 and the plastic keel 12. The manufacturing method of the steering wheel grip assembly 5 is as follows: the grip heating plate 13 is glued to the outer surface of the plastic keel 12 with glue. After gluing, the surface covering 14 is glued to the surfaces of the grip heating plate 13 and the plastic keel 12. The grip heating plate 13 is supplied with electricity by an exposed power cord, thereby heating the entire grip.

[0032] See also Figure 1 As shown, the transmitting part 1 is placed in the transmitting tray 7; the receiving part 2 is placed in the receiving tray 8; the transmitting tray 7 is fixedly connected to the end of the clamp 10 via a flexible connecting tube 9; the clamp 10 is fixedly installed in the vehicle body; a power transmission line 11 is sheathed in the flexible connecting tube 9; one end of the power transmission line 11 is connected to the vehicle power supply 15, and the other end is connected to the signal input terminal of the drive module; the receiving tray 8 is fixed to the movable base below the steering wheel and corresponds to the position of the transmitting tray 7. Figure 1As shown, the flexible connecting tube 9 is a foldable and bendable hollow metal hose. The on-board power supply 15 is a cigarette lighter. The clamp 10 is an I-shaped clamp. The transmitting part 1 is placed in the transmitting disk 7 and is connected to the cigarette lighter through a power transmission line 11 in a concealed wiring manner. This wiring method not only does not affect the appearance but also is convenient to use. In addition to using metal wire, the handle heating plate 13 of the utility model can also use electric heating cloth. The electric heating cloth includes a layer of glass fiber cloth, and a conductive layer is coated on both sides of the glass fiber cloth, and electrodes are embedded in the conductive layer; the conductive layer can be evenly coated on both sides of the glass fiber cloth after mixing graphite powder, metal powder and adhesive. The above-mentioned electric heating cloth is low in cost, generates heat evenly, and can change the temperature rise amplitude according to the change of voltage.

[0033] See also Figure 1 As shown, the power cable from the transmitter tray 7 passes through a flexible connecting tube 9, which is screwed to the transmitter tray 7. The other end of the flexible connecting tube 9 is connected to a clamp 10 and secured with screws. The power cable exits the flexible connecting tube 9 and is screwed to the transmitter tray 7. The other end of the flexible connecting tube 9 is connected to a clamp 10 and secured with screws. The power cable exiting the flexible connecting tube 9 is connected to the cigarette lighter connector (or a car fuse). The receiving tray 8 has two power cables.

[0034] The power supply unit is installed in a suitable position in the vehicle using a fixture 10. Connecting the power input connector to the cigarette lighter connector allows for a stable 24V power output when the receiving tray 8 and transmitting tray 7 are aligned and positioned parallel to each other. The power supply utilizes a foldable, flexible hollow metal hose to flexibly adjust the position of the transmitting tray 7. Furthermore, contactless power is provided between the transmitting tray 7 and the receiving tray 8 to provide power to the load.

[0035] See also Figure 4As shown, 12V-24V DC power is input from the vehicle's power supply. After filtering and current limiting, it is stabilized by the transmitter voltage regulator to power the relevant chips and oscillator circuits to ensure normal operation of the components. It also powers the switch section and provides power for the induction of the transmitting coil. When the relevant chips are operating, an 80mA current is supplied to the oscillator section, causing it to oscillate at a frequency of 30-40kHz. The oscillator section then drives the switch section, ultimately transmitting the power through the transmitting coil as pulses at a frequency of 30-40kHz. During the transmission process, the transmission signal is fed back to the chip through the signal feedback section to control the transmission signal and stabilize its operating state, thus completing the transmission process. When the receiving coil of the receiving section senses the 30-40kHz frequency signal, it converts it to the rectifier section, which converts the received pulse signal into DC power. After being stabilized by the receiver voltage regulator section, it is finally supplied to the handlebar heating plate 13, thus completing the receiving process. The pulse width modulation section can use a TL494 chip. The vehicle power supply 15 inputs 12V~24V DC power, and dynamically adjusts the power through the transmitter voltage stabilization and feedback loop to ensure that the output power matches the impedance characteristics of the grip heater 13 to avoid overload risks.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A non-contact heated steering wheel grip, characterized in that: It comprises a transmitting part (1), a receiving part (2) and a steering wheel grip component (5); The transmitting part (1) includes a driving module and a transmitting coil (3); the receiving part (2) includes a receiving coil (4) and a signal conditioning circuit; the signal input end of the driving module is connected to a vehicle power supply (15); the signal output end of the driving module is connected to the transmitting coil (3); the signal output end of the receiving coil (4) is connected to the signal input end of the signal conditioning circuit; and the signal output end of the signal conditioning circuit is connected to a steering wheel grip heating plate (13) in the steering wheel grip component (5).

2. The non-contact heated steering wheel grip according to claim 1, characterized in that: The driving module comprises a boost module and a transmitting module; the signal transmission port of the boost module is connected to the signal transmission port of the transmitting coil (3) via the transmitting module; the signal conditioning circuit comprises a receiving module, a rectifier module and a voltage stabilizing module; the signal transmission port of the receiving module is connected to the signal transmission port of the voltage stabilizing module via the rectifier module.

3. The non-contact heated steering wheel grip according to claim 1, characterized in that: The driving module comprises a filter current limiting circuit, a transmitting voltage stabilizing circuit, a pulse width modulation part, an oscillating part and a switch part; the signal input end of the filter current limiting circuit is connected to the vehicle power supply; the signal output end of the filter current limiting circuit is connected to the signal input end of the transmitting voltage stabilizing circuit; the signal output end of the transmitting voltage stabilizing circuit is connected to the signal input end of the pulse width modulation part; the signal output end of the pulse width modulation part is connected to the signal input end of the oscillating part; the signal output end of the oscillating part is connected to the signal input end of the switch part; and the signal output end of the switch part is connected to the signal input end of the transmitting coil (3).

4. The non-contact heated steering wheel grip according to claim 3, characterized in that: A feedback part is also provided; ports of the feedback part are respectively connected to the transmitting coil (3) and ports of the pulse width modulation part.

5. The non-contact heated steering wheel grip according to any one of claims 1 to 4, characterized in that: The steering wheel grip component (5) comprises a plastic keel (12), a grip heating plate (13) and a surface foreskin (14); the grip heating plate (13) is fixed on the plastic keel (12); and the surface foreskin (14) covers the grip heating plate (13) and the plastic keel (12).

6. The contactless heated steering wheel grip according to claim 5, characterized in that: The transmitting part (1) is placed in a transmitting disk (7); the receiving part (2) is placed in a receiving disk (8); the transmitting disk (7) is fixedly connected to the end of a clamp (10) via a flexible connecting tube (9); the clamp (10) is fixedly arranged in a vehicle body; a power transmission line (11) is sleeved in the flexible connecting tube (9); one end of the power transmission line (11) is connected to a vehicle power supply (15), and the other end is connected to a signal input end of a drive module; the receiving disk (8) is fixed on a movable base at the lower part of the steering wheel and corresponds to the position of the transmitting disk (7).

7. The contactless heated steering wheel grip according to claim 6, characterized in that: The flexible connecting pipe (9) is a foldable and bendable metal hollow hose.

8. The contactless heated steering wheel grip according to claim 7, characterized in that: The vehicle-mounted power supply (15) is a cigarette lighter.

9. The contactless heated steering wheel grip according to claim 8, characterized in that: The clamp (10) is an I-shaped clamp.

10. The contactless heated steering wheel grip according to claim 9, characterized in that: The grip heating plate (13) adopts electric heating cloth; the electric heating cloth comprises a layer of glass fiber cloth; both sides of the glass fiber cloth are coated with a conductive layer; electrodes are embedded in the conductive layer.

Images