A car seat with heated cushion

Abstract

This utility model relates to the field of automotive seat technology, specifically to an automotive seat with a heated cushion. The seat includes a seat body, an insulation layer sewn onto the back of the breathable cushion, a perforated heat-conducting plate fixedly connected to the inner side of the seat body, an electric heating wire mesh fixedly connected to the inner side of the insulating frame, and a miniature fan assembly fixedly installed on the inner side of the seat body. This automotive seat with a heated cushion, through the construction of a synergistic heat delivery system, utilizes the airflow generated by the miniature fan assembly to forcibly disperse heat, preventing localized heat accumulation. The first perforated layer of the perforated heat-conducting plate, the insulation layer, and the second perforated layer of the breathable cushion form a multi-level uniform flow channel, further diffusing the heat during transmission. The excellent heat retention properties of the cotton insulation layer concentrate heat transfer to the seat surface. Simultaneously, the breathable cushion uses highly breathable fabric, avoiding the stuffiness and sweating problems caused by the sealed design of traditional heated seats.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to an automotive seat with a heated seat cushion. Background Technology

[0002] With the continuous development of the automotive industry, consumers are increasingly demanding higher levels of comfort in car interiors, among which heated seats have become an important feature for vehicles in cold regions. In low-temperature environments, the surface temperature of car seats is low, which can easily cause discomfort to passengers when in direct contact, and may even affect the driving experience and safety. Therefore, designing car seats with heating functions can effectively improve this problem, thereby enhancing the heating efficiency, temperature uniformity, and ride comfort of car seats in low-temperature environments.

[0003] However, the existing heated seat structure has the following shortcomings:

[0004] 1) Poor heating uniformity: Traditional heated seats often use heating wires directly laid inside the seat. The heat is concentrated in the area near the heating wires, resulting in uneven temperature distribution on the seat surface. The area near the heating wires is too hot, while the area far from the heating wires heats up slowly, which can easily lead to local overheating or insufficient heating.

[0005] 2) Low heat transfer efficiency: Existing heating structures lack effective heat guidance and diffusion mechanisms. The heat generated by the heating wires accumulates inside the seat and is transferred to the seat surface slowly, resulting in a long time for the seat to heat up and failing to quickly meet the heating needs of passengers.

[0006] 3) Imbalance between heat preservation and breathability: Some heated seats use highly sealed materials, resulting in poor seat breathability. After prolonged use, passengers may feel stuffy and reduce riding comfort.

[0007] Therefore, in view of the above-mentioned technical problems, a car seat with a heated seat cushion is proposed. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a car seat with a heated cushion, which has the advantages of uniform heating and breathable insulation, thus solving the problem that existing heated seats in the background art need further improvement in terms of uniform heating and heating efficiency.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a car seat with a heated cushion, comprising a seat body, wherein the interior of the seat body is provided with a uniform heat distribution structure;

[0010] The uniform heat distribution structure includes a breathable pad sewn onto the front of the seat body, an insulation layer sewn onto the back of the breathable pad, a perforated heat-conducting plate fixedly connected to the inside of the seat body, an insulating frame fixedly installed inside the seat body, an electric heating wire mesh fixedly connected to the inside of the insulating frame, a miniature fan assembly fixedly installed inside the seat body, and a temperature sensor fixedly installed on the right side of the seat body.

[0011] Furthermore, the seat body is divided into a backrest and a seat surface, and a stitching groove is provided on both the backrest and the seat surface. There are two air-hole heat-conducting plates, which are fixed to the inner side of the two stitching grooves respectively. A first air-hole layer is evenly distributed on the inner side of both air-hole heat-conducting plates.

[0012] Furthermore, there are two breathable pads and two heat insulation layers. The inner sides of the two breathable pads and the two heat insulation layers are provided with a uniformly distributed second air hole layer. The two heat insulation layers are made of cotton and are respectively sewn and fixed to the side of the two air hole heat conduction plates facing the outside of the seat body.

[0013] Furthermore, an air duct is provided at the bottom front of the seat surface, and a filter screen is fixedly connected inside the air duct and on the side near the outside of the seat surface. A mounting plate is fixed to the back of the filter screen, and the miniature fan assembly is located on one side of the mounting plate. A power supply box is fixedly installed on the right side of the seat surface.

[0014] Furthermore, the power supply box is electrically connected to the miniature fan assembly via wires, the insulating frame is located directly behind the miniature fan assembly, and the heating wire mesh is electrically connected to the power supply box via cables.

[0015] Furthermore, the temperature sensor is located on the right side of the chair back, and a temperature probe is provided on the left side of the temperature sensor, extending into the interior of the chair back.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. This car seat with a heated cushion constructs a synergistic heat delivery system. The electric heating wire mesh adopts a uniformly distributed mesh structure to ensure uniform initial heat generation. The airflow generated by the micro fan group can forcefully disperse the heat and avoid local heat accumulation. The first pore layer of the pore heat conduction plate, the heat insulation layer, and the second pore layer of the breathable pad form a multi-level uniform flow channel, which further diffuses the heat flow during the transfer process, thereby effectively solving the problem of uneven temperature distribution in traditional heated seats.

[0019] 2. This car seat with heated cushion utilizes the excellent heat retention properties of the cotton insulation layer to effectively reduce the rate of heat loss through heat exchange with the outside environment, allowing heat to be concentrated and transferred to the seat surface, thus extending the heat retention time. At the same time, the breathable cushion uses highly breathable fabric, and with the through-hole design of the first and second air pore layers, a smooth air circulation channel is formed. While ensuring effective heat transfer, it also enables air exchange between the inside and outside of the seat, avoiding the stuffiness and sweating problems caused by the sealed environment of traditional heated seats. Attached Figure Description

[0020] Figure 1 This is a front view of the seat body structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the breathable pad and heat insulation layer structure of this utility model;

[0022] Figure 3 This is a schematic diagram showing the disassembled structure of the chair surface of this utility model.

[0023] In the diagram: 1. Seat body; 101. Backrest; 102. Seat surface; 2. Uniform heat distribution structure; 201. Breathable pad; 202. Insulation layer; 203. Air-perforated heat-conducting plate; 204. Insulating frame; 205. Heating wire mesh; 206. Miniature fan assembly; 207. Temperature sensor; 3. Seam groove; 4. First air-perforated layer; 5. Second air-perforated layer; 6. Air duct; 7. Filter plate; 8. Power supply box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 The structural and installation details of the various components of this car seat with heated cushion are as follows:

[0026] 1) The backrest 101 and seat 102 of the seat body 1 adopt a multi-layer structure design. The outer layer is made of leather or fabric, the inner layer is made of high-density sponge, and the internal skeleton cavity is made of metal to support the overall structure. A sewing groove 3 is provided on the front (the side in contact with the human body) of the backrest 101 and seat 102. The sewing groove 3 is a long groove, and its edge is sewn to the outer fabric of the seat with needle and thread to install the core component of the uniform heat distribution structure 2.

[0027] 2) The uniform heat delivery structure 2 is the core of achieving uniform heating. It consists of a breathable pad 201, a heat insulation layer 202, a perforated heat-conducting plate 203, an insulating frame 204, an electric heating wire mesh 205, a micro fan group 206, and a temperature sensor 207.

[0028] There are two breathable pads 201, corresponding to the backrest 101 and the seat surface 102 respectively. They are made of a blend of bamboo fiber and polyester fiber fabric, which has good breathability and skin-friendliness. The breathable pads 201 are sewn to the front of the seat body 1 by needle and thread, covering the seam groove 3 and the surrounding area. Its edges are tightly connected to the outer fabric of the seat to ensure a flat and close fit.

[0029] There are two insulation layers 202, which correspond one-to-one with the breathable pad 201. They are made of cotton material and filled with hollow cotton, which has excellent heat insulation performance. The insulation layer 202 is sewn on the back of the breathable pad 201, that is, on the side close to the inside of the seat, and the edges of the two are aligned and sewn together.

[0030] There are two vented heat-conducting plates 203, which are made of aluminum alloy and have good thermal conductivity. Their shape matches the stitching groove 3 and they are fixed to the inside of the stitching groove 3 by bolts, that is, on the side of the insulation layer 202 that is close to the inside of the seat. The inner side of the vented heat-conducting plate 203 (facing the inside of the seat) has a uniformly distributed first vent layer 4. The first vent layer 4 is arranged in a matrix for heat diffusion and transfer.

[0031] The insulating frame 204 is made of high-temperature resistant ceramic fiber material and has a rectangular frame structure. Its length and width are slightly smaller than the stitching groove 3. It is fixed inside the seat body 1 by buckles and is located on the side of the air vent heat conduction plate 203 facing the inside of the seat.

[0032] The electric heating wire mesh 205 is woven from nickel-chromium alloy wire, which has the characteristics of high heating efficiency and strong oxidation resistance. The electric heating wire mesh 205 is fixed to the inside of the insulating frame 204 and is positioned by the slots on the edge of the frame to ensure that it is flat and wrinkle-free.

[0033] The miniature fan assembly 206 consists of 3-4 small axial fans, which are fixed inside the seat surface 102 by a mounting plate and located on the front side of the insulating frame 204 (the side closest to the outside of the seat). The mounting plate is bolted to the internal frame of the seat surface 102 to ensure that there is no obvious vibration when the fan assembly is working.

[0034] The temperature sensor 207 is an NTC thermistor sensor. Its main body is fixed to the right side surface of the chair back 101 by a buckle for easy observation and operation. The temperature probe on the left side is a flexible probe with a diameter of 2mm. It passes through the fabric and sponge of the chair back 101 and extends to the space between the insulation layer 202 and the air-hole heat conduction plate 203 inside the chair back 101 to monitor the temperature of the core heating area in real time.

[0035] 3) Other auxiliary structures:

[0036] The stitching groove 3 is formed in the backrest 101 and the seat 102 to provide space for the installation of the uniform heat distribution structure 2. The stitching line at its edge is made of high-strength polyester thread to ensure a firm connection.

[0037] The second pore layer 5 is formed on the inner side of the breathable pad 201 and the heat insulation layer 202, corresponding to the position of the first pore layer 4, forming a through airflow channel. The pore spacing is the same as that of the first pore layer 4, ensuring that heat can be transferred smoothly.

[0038] The air duct 6 is located at the bottom front of the seat surface 102, and is long and narrow with its opening facing the front of the seat to introduce outside air;

[0039] The filter screen 7 is made of stainless steel and is fixed inside the air duct 6 on the side near the outside of the seat surface 102 by a buckle. It is used to filter dust, impurities and other contaminants in the air and prevent them from entering the seat and affecting the operation of the components.

[0040] The power supply box 8 uses an ABS plastic shell and integrates circuit components such as control circuit board, relay, and fuse. It is fixed to the right side surface of the seat 102 with bolts. The input end of the power supply box 8 is connected to the car battery through wires, and the output end is electrically connected to the micro fan group 206 and the heating wire mesh 205 through wires for power supply and control.

[0041] The connection relationships of each component are as follows:

[0042] 1) Electrical Connection: The power supply box 8 is connected to the 12V power interface of the car battery via a main cable, with the cable wrapped in a flame-retardant insulating sleeve. The output of the power supply box 8 is divided into two paths: one path is connected to the motor of the miniature fan assembly 206 via a wire to control the fan's start, stop, and speed; the other path is connected to the terminal block of the heating wire mesh 205 via a cable to supply power to the heating wire mesh; the temperature sensor 207 is connected to the control circuit board inside the power supply box 8 via a signal line to transmit temperature signals in real time.

[0043] 2) Mechanical connection: After the edges of the breathable pad 201 and the heat insulation layer 202 are sewn together, the back of the heat insulation layer 202 and the side of the heat-conducting plate 203 facing the outside of the seat are bonded with high-temperature resistant adhesive and fixed with needle and thread to ensure that the two fit tightly and reduce heat loss; the insulating frame 204 is connected to the internal frame of the seat by snaps, and the electric heating wire mesh 205 is embedded in the slot of the insulating frame 204 without relative movement with the frame; the mounting plate of the micro fan group 206 is bolted to the internal frame of the seat surface 102, and the filter screen 7 is snapped to the air duct 6, which can be disassembled and cleaned regularly.

[0044] In summary, the workflow of this car seat with heated cushion includes:

[0045] 1) Start-up phase: The driver and passengers start the heating function through the control button on the power box 8. After receiving the instruction, the control circuit board inside the power box 8 connects the power supply to the heating wire mesh 205 and the miniature fan assembly 206. At this time, the heating wire mesh 205 is powered on and heats up, and the temperature rises rapidly. The miniature fan assembly 206 starts to rotate and draws in air from the outside through the air duct 6. The air enters the seat surface 102 after being filtered by the filter plate 7.

[0046] 2) Heat transfer stage: The micro fan group 206 blows the filtered air toward the electric heating wire mesh 205. When the air flows through the electric heating wire mesh, it absorbs heat and forms a hot airflow. Under the thrust of the fan, the hot airflow flows behind the insulating frame 204 and enters the first pore layer 4 of the pore heat conduction plate 203. Since the through holes of the first pore layer 4 are evenly distributed, the hot airflow is dispersed into multiple fine airflows, which evenly pass through the pore heat conduction plate 203 and enter the second pore layer 5 of the insulation layer 202 and the breathable pad 201. The hot airflow further diffuses in the second pore layer 5 and is finally transferred to the seat surface through the breathable pad 201, thereby heating the backrest 101 and the seat surface 102.

[0047] 3) Heating shutdown stage: The driver and passengers turn off the heating function by pressing the button on the power box 8. The power box 8 cuts off all output power, the heating wire mesh 205 stops heating, the miniature fan group 206 stops working, and the entire system enters standby mode.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car seat with a heated seat cushion, comprising a seat body (1), characterized in that: The seat body (1) is provided with a uniform heat distribution structure (2) inside; The uniform heat distribution structure (2) includes a breathable pad (201) sewn onto the front of the seat body (1), an insulation layer (202) sewn onto the back of the breathable pad (201), a perforated heat-conducting plate (203) fixedly connected to the inner side of the seat body (1), an insulating frame (204) fixedly installed inside the seat body (1), an electric heating wire mesh (205) fixedly connected to the inner side of the insulating frame (204), a miniature fan assembly (206) fixedly installed inside the seat body (1), and a temperature sensor (207) fixedly installed on the right side of the seat body (1).

2. The car seat with a heated seat cushion according to claim 1, wherein: The seat body (1) is divided into a backrest (101) and a seat surface (102). A stitching groove (3) is provided on both the backrest (101) and the seat surface (102). There are two air-hole heat-conducting plates (203), which are fixed to the inside of the two stitching grooves (3). A uniformly distributed first air-hole layer (4) is provided on the inside of both air-hole heat-conducting plates (203).

3. The car seat with a heated seat cushion according to claim 1, wherein: The number of breathable pads (201) and heat insulation layers (202) are two. The inner sides of the two breathable pads (201) and the two heat insulation layers (202) are provided with a uniformly distributed second air hole layer (5). The two heat insulation layers (202) are made of cotton and are sewn and fixed to the two air hole heat conduction plates (203) on the side facing the outside of the seat body (1).

4. The car seat with a heated seat cushion according to claim 2, wherein: A wind trough (6) is provided at the bottom front of the seat (102). A filter plate (7) is fixedly connected inside the wind trough (6) and on the side near the outside of the seat (102). A mounting plate is fixed on the back of the filter plate (7). The miniature fan assembly (206) is located on one side of the mounting plate. A power supply box (8) is fixedly installed on the right side of the seat (102).

5. The vehicle seat with a heated seat cushion according to claim 4, wherein: The power supply box (8) is electrically connected to the miniature fan assembly (206) via wires. The insulating frame (204) is located directly behind the miniature fan assembly (206). The heating wire mesh (205) is electrically connected to the power supply box (8) via cables.

6. The automobile seat with a heating seat cushion according to claim 2, wherein: The temperature sensor (207) is located on the right side of the backrest (101), and a temperature probe is provided on the left side of the temperature sensor (207), the temperature probe extending into the backrest (101).

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