Automobile seat heating device

Abstract

This utility model belongs to the field of seat technology and relates to a car seat heating device, including a heating pad: heating wires are positioned according to the parts of the human body that need to be heated on the seat cushion and / or seat back, and the heating wires are embroidered on non-woven fabric with sewing thread to achieve the positioning of the heating wires; the heating wires have a bulletproof wire set in the center of the insulating tube, and multiple resistance wires are surrounded by the bulletproof wire inside the insulating tube; the temperature control component includes a temperature sensor, a temperature controller, a thermal protector, a terminal block and a connector connected by wires; the lead wire of the temperature control component is led out of a PVC pipe and electrically connected to the connector; the foam of the car seat cushion and / or seat back is provided with a settling groove to avoid the heating wires; the upper surface of the heating wires and the non-woven fabric is covered with a covering layer. The advantages are: it has temperature and flame retardant protection, good comfort, long service life, and is suitable for a safe heating device for car seats.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, and in particular relates to a car seat heating device. Background Technology

[0002] In recent years, with the strong development momentum of my country's automobile industry, China has become the third country after the United States and Japan to produce more than 10 million automobiles annually, entering the ranks of major automobile-producing countries.

[0003] With the increase in personal and family income, cars have become the first choice for family consumption. In addition to higher requirements for car brand, safety and quality, people pay more attention to driving comfort. Among these, the comfort of car seats is crucial. We know that in winter, the temperature inside the car is very low, and drivers or passengers tend to install car seat cushions with heating functions. Initially, only high-end cars were equipped with seat heating functions. As the market has become more widespread, mid-to-low-end cars have also become standard in the automotive industry. Therefore, developing a heating device suitable for mid-to-low-end car seats has become an urgent need for the industry. Summary of the Invention

[0004] The purpose of this invention is to provide a safe, temperature-protected, comfortable, and long-lasting car seat heating device with heating function.

[0005] The purpose of this utility model is to solve the following problem:

[0006] A car seat heating device includes a heating pad and a temperature control component. The heating pad is constructed by laying heating wires on a non-woven fabric according to the parts of the human body that need to be heated on the seat cushion and / or seat back, and then embroidering them onto the non-woven fabric with sewing thread and sewing bobbin thread to achieve the positioning of the heating wires on the non-woven fabric. The heating wires have a bulletproof wire in the center of an insulating tube, and multiple resistance wires with insulating varnish are surrounded by the bulletproof wire inside the insulating tube. The temperature control component includes a temperature sensor, a temperature controller, a thermal protector, a terminal block, and a connector, which are electrically connected by wires. The temperature control component is electrically connected to both ends of the heating wires through the terminal blocks. The power input end of the temperature control component is electrically connected to an outgoing wire, which is encased in a PVC pipe and electrically connected to a connector. The heating pad is placed on the foam of the seat cushion and / or seat back, and the foam has a settling groove to avoid the heating wires. The upper surface of the heating wires and the non-woven fabric is covered with a covering layer.

[0007] As a further optimization of the above technical solution, hot melt adhesive is provided at the end of the PVC pipe on the temperature control component side and at the electrical connection between the connector and the heating wire.

[0008] As a further optimization of the above technical solution, the temperature controller is equipped with a passive device made of two metals with different coefficients of thermal expansion for testing the temperature; when the temperature reaches the highest set value, the internal contacts disconnect and the heating wire power supply circuit is disconnected; when the temperature returns to the lowest set value, the internal contacts reconnect and the heating wire power supply circuit is connected.

[0009] As a further optimization of the above technical solution, the temperature sensor includes a PTC thermistor and an NTC thermistor respectively disposed at the connection points of the two ends of the heating wire. The temperature controller receives the temperature signals collected by the PTC thermistor and the NTC thermistor to control different temperature control levels.

[0010] As a further optimization of the above technical solution, the temperature sensor, thermostat, thermal protector, connector, and the wiring terminals at both ends of the heating wire are integrated into a control body through low-pressure injection molding.

[0011] As a further optimization of the above technical solution, the control body is attached to one end of the non-woven fabric with double-sided adhesive.

[0012] As a further optimization of the above technical solution, the heating pad is fixed to the foam of the seat cushion and / or seat back using double-sided adhesive.

[0013] As a further optimization of the above technical solution, a cover is fitted onto the foam of the seat cushion and / or seat back where the heating pad is provided.

[0014] As a further optimization of the above technical solution, the nonwoven fabric is a flame-retardant nonwoven fabric.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. Improved riding comfort: This utility model heats up quickly, and the human body can feel the heat in 3 minutes, bringing you a comfortable driving experience.

[0017] 2. Performance Improvement: Flame-retardant non-woven fabric is used as the base cloth of the heating pad, which is flame-retardant. The thermal protector is a passive device made of two metals with different expansion coefficients. It is used to test the temperature. When the temperature reaches the highest set value, the internal contacts open. When the temperature returns to the lowest set value, the internal contacts close again. The temperature sensor uses PTC thermistors and NTC thermistors to collect temperature signals and form an electronic temperature control unit (TCU) with the temperature controller to realize temperature control level control. It automatically cuts off the power in case of high temperature abnormality, thus improving the heating performance.

[0018] 3. Adaptability and flexibility: The seat heating pad is made of foam material based on the human body's contact surface and heating area data, combined with the principles of human motion engineering. The foam material has settling grooves, which makes the heating pad fit the seat foam material better and can be completely customized.

[0019] 4. Environmental Contribution: Experimental verification shows that the materials and lightweight design that meet the standards have a positive effect on environmental protection and meet environmental protection requirements.

[0020] 5. This utility model has temperature protection, good comfort, and long service life, and is suitable for a safety heating device for car seats. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main components of this utility model.

[0022] Figure 2 This is a cross-sectional view of the heating wire of this utility model.

[0023] Figure 3 This is a partial cross-sectional view of the heating pad of this utility model at the settling tank of the foam.

[0024] Figure 4 This is a partial cross-sectional view of the heating pad of this utility model at the wiring terminal.

[0025] Figure 5 This is a schematic diagram of the node principle of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-5 :

[0027] A car seat heating device includes a heating pad 30 and a temperature control component 31. The heating pad 30 is formed by embroidering heating wires 19 onto the upper surface of a non-woven fabric 20 according to the parts of the human body that need to be heated on the seat cushion 35 and / or the seat back 34, using sewing thread 22 and sewing thread 21 to position the heating wires 19 on the non-woven fabric 20. The heating wires 19 have a bulletproof wire 191 at the center of an insulating tube 194, and multiple resistance wires 192 with insulating varnish 193 are surrounded around the bulletproof wire 191 inside the insulating tube 194. The temperature control component 31 includes a temperature sensor, a thermostat, a thermal protector, and wiring connected by wires. Terminal 23 and connector 16; the temperature control component 31 is electrically connected to both ends of the heating wire 19 through the terminal 23. The power input end of the temperature control component 31 is electrically connected to the lead wire 15. The lead wire is encased in a PVC pipe 13 and led out and electrically connected to the connector 16. The heating pad 30 is placed on the foam body 33 of the car seat cushion 35 and / or the seat back 34. The foam body 33 is provided with a settling groove 331 to avoid the heating wire 19. The upper surface of the heating wire 19 and the non-woven fabric 20 is covered with a covering layer. After the heating pad 30 is placed on the foam body 33 of the car seat cushion 35 and / or the seat back 34, the heating wire 19 automatically sinks into the bottom of the settling groove 331.

[0028] The heating pad is installed on the foam of the seat cushion and / or seat back, the foam having a settling groove to avoid the heating wire, and the heating wire and the upper surface of the non-woven fabric are covered with a covering layer.

[0029] As a further optimization of the above technical solution, hot melt adhesive 12 is provided at the end of the PVC pipe 13 on the side of the temperature control component 31, and at the electrical connection between the connector 16 and the heating wire 19.

[0030] As a further optimization of the above technical solution, the temperature controller is equipped with a passive device made of two metals with different coefficients of thermal expansion for testing the temperature; when the temperature reaches the highest set value, the internal contacts are disconnected and the power supply circuit of the heating wire 19 is disconnected; when the temperature returns to the lowest set value, the internal contacts are reconnected and the power supply circuit of the heating wire 19 is connected.

[0031] As a further optimization of the above technical solution, the temperature sensor includes a PTC thermistor 11 and an NTC thermistor 17 respectively disposed at the connection points of the two ends of the heating wire 19. The temperature controller receives the temperature signals collected by the PTC thermistor 11 and the NTC thermistor 17 to control different temperature control levels.

[0032] As a further optimization of the above technical solution, the connection points at both ends of the temperature sensor, thermostat, thermal protector, connector 16 and heating wire 19 are formed into an integrated control body 10 by low-pressure injection molding.

[0033] As a further optimization of the above technical solution, the control body 10 is attached to one end of the nonwoven fabric 20 with double-sided tape 18.

[0034] As a further optimization of the above technical solution, the heating pad 30 is fixed to the foam of the seat cushion 35 and / or the seat back 34 by double-sided adhesive tape 18.

[0035] A cover 32 is fitted onto the foam 33 of the seat cushion 35 and / or seat back 34, which is provided with the heating pad 30.

[0036] As a further optimization of the above technical solution, the nonwoven fabric 20 is a flame-retardant nonwoven fabric.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A car seat heating device, characterized in that: The device includes a heating pad and a temperature control component. The heating pad is constructed by laying heating wires on non-woven fabric according to the areas of the human body that need heating on the seat cushion and / or seat back, and then embroidering them onto the non-woven fabric with sewing thread and sewing bobbin thread to achieve the positioning of the heating wires on the non-woven fabric. The heating wires have a bulletproof wire in the center of an insulating tube, and multiple resistance wires with insulating varnish are surrounded by the bulletproof wire inside the insulating tube. The temperature control component includes a temperature sensor, a temperature controller, a thermal protector, a terminal block, and a connector, all electrically connected by wires. The temperature control component is electrically connected to both ends of the heating wires through the terminal blocks. The power input end of the temperature control component is electrically connected to an outgoing wire, which is encased in a PVC pipe and electrically connected to a connector. The heating pad is placed on the foam body of the seat cushion and / or seat back, and the foam body has settling grooves to avoid the heating wires. The upper surface of the heating wires and the non-woven fabric is covered with a covering layer.

2. The automobile seat heating device according to claim 1, characterized by: Hot melt adhesive is applied to the end of the PVC pipe on the temperature control component side, as well as to the electrical connection between the connector and the heating wire.

3. The automobile seat heating device according to claim 1, characterized by: The temperature controller is equipped with a passive device made of two metals with different coefficients of thermal expansion for testing temperature. When the temperature reaches the highest set value, the internal contacts open and the heating wire power supply circuit is disconnected. When the temperature returns to the lowest set value, the internal contacts reconnect and the heating wire power supply circuit is connected.

4. The car seat heating device according to claim 1, wherein: The temperature sensor includes a PTC thermistor and an NTC thermistor respectively installed at the connection points of the two ends of the heating wire. The temperature controller receives the temperature signals collected by the PTC thermistor and the NTC thermistor to control different temperature control levels.

5. The car seat heating device according to claim 1, wherein: The temperature sensor, thermostat, thermal protector, connector, and the wiring terminals at both ends of the heating wire are integrated into a single control unit through low-pressure injection molding.

6. The car seat heating device according to claim 5, wherein: The control unit is attached to one end of the non-woven fabric with double-sided tape.

7. The car seat heating device according to claim 1, wherein: The heating pad is fixed to the foam of the seat cushion and / or seat back using double-sided adhesive.

8. The car seat heating device according to claim 1, wherein: A cover is fitted onto the foam of the seat cushion and / or seat back, which is equipped with the heating pad.

9. The car seat heating device according to claim 1, wherein: The nonwoven fabric is a flame-retardant nonwoven fabric.

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