Support structure for a lumbar support of a car seat

Through the design of the installation and support mechanisms, the position adjustment and warm support of the car seat lumbar support are realized, solving the problem that the traditional lumbar support structure cannot meet the needs of different body shapes, and improving the comfort and practicality of the seat.

CN224545788UActive Publication Date: 2026-07-24DANYANG CITY YAGUANG AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DANYANG CITY YAGUANG AUTO PARTS CO LTD
Filing Date
2025-10-22
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional car seat lumbar support structures have fixed airbag positions, lacking flexibility and adjustability, and cannot meet the diverse needs of drivers and passengers of different body types, affecting comfort and practicality.

Method used

The design incorporates an installation and support mechanism. A motor-driven lead screw moves the lead screw slide, enabling adjustable lumbar support position. The airbag is made of carbon fiber with a heating mechanism on its outer surface, providing warmth and support through an electric heating film. The airbag can inflate or deflate independently or in tandem, with a temperature control module for precise temperature control.

Benefits of technology

It enables personalized adjustment of the lumbar support position, provides suitable warm support, improves driving and riding comfort and fit, and adapts to different body shapes and environmental needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of supporting structure of automobile seat waist support, it is related to the supporting structure field of seat waist support.The utility model includes mounting mechanism, the mounting mechanism includes mounting plate, the mounting plate is fixedly connected with automobile seat frame body by bolt, by being arranged mounting mechanism, wherein mounting plate and automobile seat frame body stable bolt connection, provide stable basis for entire waist support supporting structure;Adjusting groove is set on adjusting seat, motor is used as power source, its output end is fixedly connected with screw rod through adjusting seat, when motor starts, the adjustability of waist support supporting position is realized, the problem that traditional automobile seat waist support supporting structure is solved, air bag position is fixed, lack of flexibility and adjustability, cannot satisfy the diversified needs of different body shape drivers and passengers, it is difficult to provide personalized comfortable support.
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Description

Technical Field

[0001] This utility model relates to the field of support structures for lumbar supports, specifically a support structure for a car seat lumbar support. Background Technology

[0002] In car seat design, the lumbar support plays a crucial role in enhancing the comfort of drivers and passengers. A well-designed lumbar support structure can effectively support the lower back, reduce the pressure on the lower back during long drives or rides, prevent lower back fatigue and injury, and thus significantly improve the driving and riding experience.

[0003] Traditional car seat lumbar support structures mostly use airbag support. However, the position of these airbags is usually fixed, lacking flexibility and adjustability. Since different drivers and passengers have significant differences in body shape, such as height and build, fixed-position airbags cannot meet diverse needs. For taller individuals, fixed-position airbags may not accurately support the key areas of the lower back; while for shorter individuals, the airbag position may be too high, resulting in inaccurate support and even discomfort. This mismatch makes it difficult for traditional airbag support structures to provide personalized comfort support for drivers and passengers of different body types in actual use, failing to fully realize the intended function of lumbar support and affecting the overall comfort and practicality of the car seat. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a support structure for the lumbar support of a car seat, so as to solve the technical problems of the fixed position of the airbag, lack of flexibility and adjustability in the traditional lumbar support structure of the car seat, which cannot meet the diverse needs of drivers and passengers of different body shapes, and is difficult to provide personalized comfort support, thus affecting the overall comfort and practicality of the car seat.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support structure for a car seat lumbar support, comprising an installation mechanism, wherein the installation mechanism includes an installation plate, the installation plate being fixedly connected to the car seat frame by bolts, an adjustment seat being provided on the outer surface of the installation plate, an adjustment groove being formed on the outer surface of the adjustment seat, a lead screw being rotatably connected in the adjustment groove, a motor being provided at the bottom of the adjustment seat, the output end of the motor passing through the adjustment seat and being fixedly connected to the lead screw, a lead screw slide being screwed onto the lead screw, and a support mechanism being installed on the outer surface of the lead screw slide by bolts.

[0006] By adopting the above technical solution and designing the installation mechanism, the lumbar support structure can be securely installed on the car seat frame. The position of the support mechanism can be adjusted by a motor-driven lead screw, meeting the personalized needs of different drivers and passengers for lumbar support position and improving driving comfort.

[0007] Furthermore, the support mechanism includes an airbag seat, an airbag is provided on the outer surface of the airbag seat, and an air inlet is provided on one side of the airbag.

[0008] By adopting the above technical solution, the airbag seat in the support mechanism carries the airbag, which can be inflated and deflated through the air inlet. This design can adjust the lumbar support strength according to the needs of the driver and passengers, providing a more fitting and comfortable lumbar support experience.

[0009] Furthermore, the airbag seat is made of carbon fiber, and multiple airbags are provided, arranged from top to bottom.

[0010] By adopting the above technical solution, the airbag seat is made of carbon fiber, which is high in strength and lightweight, reducing the overall weight while ensuring structural stability. Multiple airbags positioned from top to bottom can more precisely conform to the curve of the human waist, improving the support effect.

[0011] Furthermore, a heating mechanism is provided on the outer surface of the airbag, and the heating mechanism includes an electrothermal film.

[0012] By adopting the above technical solution, a heating mechanism is installed on the outer surface of the airbag, and the electrothermal film therein can generate heat in cold environments. This provides warm support for the lumbar region of drivers and passengers, relieving discomfort caused by the cold and improving the driving experience.

[0013] Furthermore, a wiring port is provided on one side of the heating film, and a circuit wire is provided on the wiring port.

[0014] By adopting the above technical solution, the wiring port and circuit wires on one side of the heating film facilitate connection to the power supply and temperature control module. The temperature control module can precisely control the heating temperature of the heating film to meet the different waist temperature needs of drivers and passengers.

[0015] Furthermore, the airbags are arranged in an array, and the air inlet is connected to the air pump unit via a hose.

[0016] By adopting the above technical solution, the airbags are arranged in an array and the air inlets are connected to the air pump unit, enabling multiple airbags to inflate and deflate independently or collaboratively. This allows for more flexible adjustment of the lumbar support shape to adapt to different driving postures and body shapes, enhancing the comfort and fit of the support.

[0017] Furthermore, the heating film is attached to the outer surface of the airbag, and the circuit wires are connected to the temperature control module.

[0018] By employing the above technical solution, the heating film is attached to the outer surface of the airbag and the circuitry is connected to the temperature control module, which can efficiently transfer heat to the airbag. The temperature control module can precisely control the temperature, avoiding excessively high or low temperatures, and providing suitable and stable warm support for the waist.

[0019] Furthermore, a limiting structure is provided between the lead screw slide and the adjusting groove, and the motor is a servo motor.

[0020] By adopting the above technical solution, the limiting structure between the lead screw slide and the adjusting groove can prevent the lead screw slide from shifting or disengaging. The servo motor can precisely control the speed and direction of rotation, ensuring smooth and accurate movement of the support mechanism and improving the reliability and stability of the adjustment.

[0021] In summary, the present invention has the following main advantages:

[0022] 1. This utility model, through the setting of an installation mechanism, wherein the installation plate is firmly bolted to the car seat frame, providing a stable foundation for the entire lumbar support structure; an adjustment groove is opened on the adjustment seat, and the motor serves as the power source, with its output end passing through the adjustment seat and fixedly connected to the lead screw. When the motor starts, based on the principle of precise control of speed and direction by the servo motor, it drives the lead screw to rotate stably in the adjustment groove. During the rotation of the lead screw, based on the screw connection between the lead screw and the lead screw slide, the lead screw slide makes linear reciprocating motion along the adjustment groove, thereby driving the support mechanism bolted to the lead screw slide to move flexibly, realizing the adjustability of the lumbar support position. This solves the problem that the airbag position is fixed in the traditional car seat lumbar support structure, lacks flexibility and adjustability, and cannot meet the diverse needs of drivers and passengers of different body shapes, making it difficult to provide personalized comfort support.

[0023] 2. This utility model incorporates a heating mechanism, in which an electric heating film is attached to the outer surface of the airbag. Utilizing the principle of heating by electricity, the electric heating film can quickly generate heat and transfer it to the airbag. A wiring port is provided on one side of the electric heating film, which is connected to a temperature control module via electrical wires. Based on the principle that the temperature control module can precisely control the temperature, drivers and passengers can adjust the heating temperature of the electric heating film according to their own needs and the actual environment, thereby providing suitable warm support for the lower back. This solves the problem that traditional car seat lumbar supports cannot provide warm and comfortable support for the lower back of drivers and passengers in cold environments. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0026] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0027] Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0028] In the diagram: 1. Mounting mechanism; 101. Mounting plate; 102. Adjusting seat; 103. Adjusting groove; 104. Lead screw; 105. Lead screw slide; 106. Motor; 2. Supporting mechanism; 201. Airbag seat; 202. Airbag; 203. Air inlet; 3. Heating mechanism; 301. Heating film; 302. Wiring port; 303. Circuit wire. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] A support structure for a car seat lumbar support, such as Figure 1-4 As shown, the installation mechanism includes a mounting plate 101, which is bolted to the car seat frame. An adjustment seat 102 is provided on the outer surface of the mounting plate 101, and an adjustment groove 103 is formed on the outer surface of the adjustment seat 102. A lead screw 104 is rotatably connected within the adjustment groove 103. A motor 106 is located at the bottom of the adjustment seat 102, and the output end of the motor 106 passes through the adjustment seat 102 and is fixedly connected to the lead screw 104. A lead screw slide 105 is screwed onto the lead screw 104, and a support mechanism 2 is bolted to the outer surface of the lead screw slide 105. The mounting plate 101 and the car seat frame are bolted together in the mounting mechanism 1, providing a stable mounting base for the entire lumbar support structure. The motor 106 on the adjustment seat 102 serves as a power source, and its output end drives the lead screw 104 to rotate within the adjustment groove 103. Based on the principle of lead screw transmission, the rotation of lead screw 104 causes the screw-connected lead screw slide 105 to move along the adjustment groove 103, which in turn drives the support mechanism 2, which is bolted to the lead screw slide 105, to move, thereby realizing flexible adjustment of the lumbar support position and meeting the needs of drivers and passengers of different body shapes for the lumbar support position.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4The support mechanism 2 includes an airbag seat 201, on the outer surface of which an airbag 202 is mounted. An air inlet 203 is located on one side of the airbag 202. Within the support mechanism 2, the airbag seat 201 provides an installation position for the airbag 202, and the air inlet 203 on the side of the airbag 202 is connected to an air source via a flexible hose. When increased lumbar support is needed, air is inflated into the airbag 202 through the air inlet 203, causing the airbag 202 to expand and increase the support for the lower back. When decreased support is needed, air is released from the air inlet 203, causing the airbag 202 to contract and reduce the support. This design allows for flexible adjustment based on the different lumbar support requirements of various drivers and passengers, providing a more fitted and comfortable lumbar support.

[0032] See Figure 1 , Figure 4 The airbag seat 201 is made of carbon fiber. Multiple airbags 202 are arranged from top to bottom. The airbag seat 201 in the support mechanism 2 is made of carbon fiber, which has high strength and lightweight properties. This ensures that the airbag seat 201 can stably support the airbags 202, providing reliable support while reducing the weight of the entire lumbar support structure and minimizing its impact on vehicle energy consumption. The multiple airbags 202 arranged from top to bottom can be individually inflated and deflated according to the curves of different parts of the human waist, more precisely conforming to the waistline and providing more even and effective support, further enhancing the comfort of passengers.

[0033] See Figure 3 , Figure 4 The airbag 202 has a heating mechanism 3 on its outer surface, which includes an electrothermal film 301. This electrothermal film 301 generates heat when energized. In cold environments, when a passenger sits in the car seat and the power is turned on, the electrothermal film 301 heats up and transfers the heat to the airbag 202. The airbag 202 then conducts the heat to the passenger's lower back, providing warm support. This effectively alleviates discomfort in the lower back caused by cold, allowing passengers to feel comfortable in cold weather and improving the overall driving experience.

[0034] See Figure 1 , Figure 2The heating film 301 has a wiring port 302 on one side, with a circuit wire 303 connected to the port 302. This connection facilitates the connection of the heating film 301 to an external power source and temperature control module. The circuit wire 303 connects the wiring port 302 to the temperature control module. When the power is turned on, the heating film 301 begins to heat up. Passengers can precisely adjust the heating temperature of the heating film 301 according to their own comfort and the actual environment through the temperature control module. Different people have different temperature sensitivities; this design can meet the personalized temperature needs of different passengers, ensuring their lower back remains in a comfortable temperature environment.

[0035] See Figure 4 The airbags 202 are arranged in an array, and the air inlets 203 are connected to the air pump unit via hoses. This design allows each airbag 202 to inflate or deflate independently or collaboratively. The air pump unit can adjust the inflation and deflation of different airbags 202 according to preset programs or manual control by the driver and passengers. When the driver and passengers adopt different sitting postures or have different body shapes, the shape of the lumbar support can be more flexibly changed by adjusting the inflation degree of each airbag 202, making the support more conform to the lumbar curve, enhancing the comfort and fit of the support, and providing a better lumbar support experience for the driver and passengers.

[0036] See Figure 1 The heating film 301 is attached to the outer surface of the airbag 202, and the circuit line 303 is connected to the temperature control module. This close fit design allows the heat generated by the heating film 301 to be efficiently transferred to the airbag 202, reducing heat loss and improving heating efficiency. The circuit line 303 connects to the temperature control module, which can monitor the temperature of the heating film 301 in real time and perform precise control according to the preset temperature range. When the temperature is lower than the set value, the current is increased to raise the temperature of the heating film 301; when the temperature is higher than the set value, the current is reduced or the power is cut off to prevent burns caused by excessively high temperatures and to prevent insufficient heating, thus providing suitable and stable warm support for the waist.

[0037] See Figure 1 , Figure 4A limiting structure is provided between the lead screw slide 105 and the adjustment groove 103. The motor 106 is a servo motor. The limiting structure between the lead screw slide 105 and the adjustment groove 103 can effectively prevent the lead screw slide 105 from deviating or disengaging from the adjustment groove 103 during its movement along the adjustment groove 103, ensuring the stability of the movement. The servo motor 106 used at the bottom of the adjustment seat 102 has the characteristic of precisely controlling the speed and direction of rotation. When adjusting the lumbar support position, the servo motor 106 can accurately control the rotation speed and direction of the lead screw 104 according to the control signal, thereby enabling the lead screw slide 105 to drive the support mechanism 2 to move smoothly and accurately, improving the reliability and stability of the adjustment and meeting the needs of drivers and passengers for adjusting the lumbar support position.

[0038] The implementation principle of this embodiment is as follows: First, during installation, the mounting plate 101 in the mounting mechanism 1 is firmly fixed to the car seat frame with bolts, providing a reliable installation base for the entire lumbar support structure. When it is necessary to adjust the lumbar support position according to the body shape of different drivers and passengers, the motor 106 at the bottom of the adjustment seat 102 is started. Since the motor 106 is a servo motor, it has the characteristic of precise control of speed and direction. The output end of the motor 106 drives the lead screw 104 to rotate in the adjustment groove 103. According to the lead screw transmission principle, the lead screw 104 is screwed to the lead screw slide 105. During the rotation of the lead screw 104, the lead screw slide 105 will move linearly along the adjustment groove 103. At the same time, a limit structure is provided between the lead screw slide 105 and the adjustment groove 103 to prevent the lead screw slide 105 from deviating or disengaging during the movement, ensuring the stability of the movement. The lead screw slide 105 drives the support mechanism 2 to move through bolts, thereby realizing the adjustability of the lumbar support position and meeting the needs of drivers and passengers of different body shapes for the lumbar support position.

[0039] The airbag seat 201 in the support mechanism 2 is made of carbon fiber. Carbon fiber has the characteristics of high strength and lightweight, which reduces the overall weight while ensuring structural strength. Multiple airbags 202 are arranged from top to bottom and distributed in an array on the outer surface of the airbag seat 201. The air inlet 203 on one side of the airbag 202 is connected to the air pump unit through a hose. The air pump unit inflates or deflates the airbag 202, which can adjust the degree of inflation of the airbag 202 and thus adjust the lumbar support strength to meet the lumbar support strength requirements of different drivers and passengers.

[0040] In cold environments, to provide warm and comfortable support for the lumbar region of passengers, a heating mechanism 3 is provided on the outer surface of the airbag 202. The heating film 301 is attached to the outer surface of the airbag 202. The wiring port 302 on one side of the heating film 301 is connected to the temperature control module through the circuit line 303. Based on the principle that the heating film heats up when energized and the temperature control module can accurately control the temperature, when the power is turned on, the heating film 301 heats up and transfers the heat to the airbag 202. Passengers can adjust the heating temperature of the heating film 301 through the temperature control module to obtain suitable lumbar temperature support and improve the comfort of driving and riding.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A support structure for a car seat lumbar support, characterized in that: The system includes an installation mechanism (1), which includes an installation plate (101). The installation plate (101) is fixedly connected to the car seat frame by bolts. An adjustment seat (102) is provided on the outer surface of the installation plate (101). An adjustment groove (103) is provided on the outer surface of the adjustment seat (102). A lead screw (104) is rotatably connected in the adjustment groove (103). A motor (106) is provided at the bottom of the adjustment seat (102). The output end of the motor (106) passes through the adjustment seat (102) and is fixedly connected to the lead screw (104). A lead screw slide (105) is screwed onto the lead screw (104). A support mechanism (2) is installed on the outer surface of the lead screw slide (105) by bolts.

2. The support structure of the car seat lumbar support according to claim 1, characterized in that: The support mechanism (2) includes an airbag seat (201), an airbag (202) is provided on the outer surface of the airbag seat (201), and an air inlet (203) is provided on one side of the airbag (202).

3. The support structure of the car seat lumbar support according to claim 2, characterized in that: The airbag seat (201) is made of carbon fiber, and multiple airbags (202) are provided, arranged from top to bottom.

4. The support structure of the car seat lumbar support according to claim 3, characterized in that: The outer surface of the airbag (202) is provided with a heating mechanism (3), which includes an electrothermal film (301).

5. The support structure of the car seat lumbar support according to claim 4, characterized in that: A wiring port (302) is provided on one side of the electric heating film (301), and a circuit line (303) is provided on the wiring port (302).

6. The support structure of the car seat lumbar support according to claim 2, characterized in that: The airbags (202) are arranged in an array, and the air inlet (203) is connected to the air pump unit via a hose.

7. The support structure of the car seat lumbar support according to claim 5, characterized in that: The heating film (301) is attached to the outer surface of the airbag (202), and the circuit line (303) is connected to the temperature control module.

8. The support structure of the car seat lumbar support according to claim 1, characterized in that: A limiting structure is provided between the lead screw slide (105) and the adjustment groove (103), and the motor (106) is a servo motor.