Waist supporting mechanism of automobile seat

Abstract

The invention relates to an automobile seat waist supporting mechanism which comprises an automobile seat body, and an adjusting mechanism is arranged at the top of the automobile seat body. The adjustable backrest has the beneficial effects that when a user needs to adjust the angle of the seat backrest, the inclination of the adjustable backrest body can be manually adjusted firstly, then the micro transmission pump is started, air is conveyed into the air bag through the communicating pipe, the user can sit on a trial to ensure optimal matching of waist support, and after the user is adjusted to an ideal state, the user can sit on the waist support. In the running process of the vehicle, if braking occurs and a user inclines forwards due to the inertia effect, the back can apply pressure to a plurality of adjusting air bags, after the adjusting air bags are pressed, a mounting plate is driven to apply force to a fixing plate, the fixing plate is made to generate displacement, the force is transmitted to a protection plate step by step, and the protection plate further transmits the pressure to a reset spring; the reset spring effectively buffers impact on the waist and the back of the user during braking by absorbing impact force.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a lumbar support mechanism for an automobile seat. Background Art

[0002] With the development of the automobile industry and the increasing demand of consumers for driving comfort, the ergonomic design of automobile seats has become an important research direction. Among them, the lumbar support mechanism, as an important component to improve seat comfort and driving safety, can effectively relieve the discomfort caused by poor sitting posture or lumbar fatigue during long-term riding for drivers and passengers. Reasonable lumbar support can not only improve the alignment of the spine and reduce lumbar pressure, but also play a certain buffering and protective role during emergency braking.

[0003] The prior art discloses an invention patent with application number CN202686044U, which discloses a lumbar support mechanism for a car seat. The basic description is as follows: it includes a support plate, a slide rail, a cable, an adjuster installed at one end of the cable, a cable sleeve sleeved on the rear half of the cable, and a mounting buckle. A card is fixedly installed on the lower fixed bracket and connected to the bottom of the slide rail through the card. The other end of the cable is installed on the lower fixed bracket. The lower end of the support plate is seated in the "L"-shaped groove of the lower fixed bracket. There is a connecting hole connected to the seat frame on the lower fixed bracket. The utility model can adjust the support plate to produce different curvatures through the adjuster. It implements large-area overall support for the human waist and spine, has a simple and reasonable structure, is easy to use, and is suitable for various sitting occasions.

[0004] In the actual implementation process, there are still some problems:

[0005] Some seats provide basic support by adding foam filling in the lumbar area, but the elasticity of the foam will gradually decay over time and the support effect will weaken. Some seats use levers or springs to adjust the lumbar support position, but the adjustment accuracy is low, making it difficult to achieve personalized matching, and mechanical wear may occur during the adjustment process, affecting reliability in long-term use. The traditional seat lumbar support mechanism cannot effectively buffer the impact force caused by inertia of the user when the vehicle brakes suddenly. During high-speed driving or long-term driving, the user's waist may be subjected to additional pressure during long-term vibration or braking due to the strong rigidity of the support structure and the lack of dynamic buffering ability, causing discomfort. In winter environments, the lumbar support area of ​​traditional seats may be too cold, causing the driver's waist muscles to stiffen, affecting the comfort of long-distance driving. The plastic components of traditional lumbar support mechanisms may become brittle at low temperatures. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In order to solve the above problems in the prior art, the present invention provides a lumbar support mechanism for a car seat, which solves the problems of traditional car seat foam being easy to collapse, having low adjustment accuracy, insufficient cushioning, strong rigidity that easily causes discomfort, and becoming brittle at low temperatures that affects comfort.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention are:

[0010] A car seat lumbar support mechanism comprises a car seat body, an adjustment mechanism is arranged on the top of the car seat body, auxiliary support mechanisms are arranged on both sides of the adjustment mechanism, and an adjustable backrest body is hinged on the back of the car seat body;

[0011] An adjustment mechanism, the adjustment mechanism includes an adjustment airbag, a return spring, a screw and a threaded barrel, the backs of the three adjustment airbag bodies are fixedly connected to a mounting plate, the back of the mounting plate is provided with a protective plate, the back of the protective plate is fixedly connected to a return spring, the back of the return spring is rotatably connected to a limit ring, the inner side of the limit ring is threadedly connected to a screw, and one end of the two screws is threadedly connected to a threaded barrel;

[0012] The auxiliary support mechanism comprises an auxiliary support side plate, a temperature plate and a rubber plate. The inner sides of the two auxiliary support side plates are fixedly connected with the temperature plate, and the outer sides of the two temperature plates are snap-connected with the rubber plate.

[0013] A slide groove is provided on the back of the adjustable backrest body, and a guide rail is fixedly connected to the inner wall of the slide groove.

[0014] The inner sides of the guide rails are respectively slidably connected with a slider 1 and a slider 2, and one end of the slider 1 is rotatably connected with an auxiliary lumbar support.

[0015] The slider 1 and the slider 2 are respectively slidably connected to the inner wall of the slide groove, and one end of the slider 2 is rotatably connected to the back plate.

[0016] Two installation boxes are fixedly connected to the inner side of the back plate, and two adjacent threaded cylinders are rotatably connected to the inner sides of the two installation boxes respectively. Two limiting grooves are arranged on the inner sides of the two installation boxes.

[0017] The inner side of each of the limiting grooves is slidably connected with a locking plate, one end of two adjacent locking plates is fixedly connected with a fixing plate, and the back side of the fixing plate is attached to the front side of the protective plate.

[0018] A micro transmission pump is fixedly connected to the front of the back plate, and a connecting pipe is fixedly connected to the output end of the micro transmission pump. The three ends of the connecting pipe respectively pass through three mounting plates and are respectively connected to three regulating air bags. The backs of the three mounting plates are all provided with air permeable grooves.

[0019] Two side walls of the back plate are fixedly connected with two adjustable resistance hinges, and one end of two adjacent adjustable resistance hinges is hinged to one side of the auxiliary supporting side plate.

[0020] (III) Beneficial effects

[0021] The beneficial effects of the present invention are as follows: when the user needs to adjust the seat back angle, the user can first manually adjust the inclination of the adjustable backrest body, then start the micro transmission pump, and use the connecting tube to transmit gas to the inside of the airbag. The user can try sitting to ensure the best match of the lumbar support. When adjusted to the ideal state, the driving state can be entered. During the driving process of the vehicle, if braking occurs, the user leans forward due to inertia, and the back will exert pressure on multiple adjustment airbags. After the adjustment airbags are compressed, the mounting plate is driven to exert force on the fixing plate, causing the fixing plate to move and gradually transmit the force to the protective plate. The protective plate further transmits pressure to the return spring. The return spring absorbs the impact force and effectively buffers the impact on the user's waist and back during braking, thereby improving driving safety and comfort. As the use time increases, the elasticity of the return spring may gradually decay. Reduction, for this purpose, an adjustable compensation mechanism is designed, the user can fix the protective plate with one hand and rotate the threaded barrel with the other hand to adjust the length of the screw, and apply additional pressure to the return spring by turning the limit ring, thereby effectively extending the service life of the spring and maintaining stable cushioning performance. In addition, the auxiliary lumbar support equipped with the seat further enhances the personalized adaptability of the support. For users with wider waists, the auxiliary support side panels can be adjusted to fit the waist curve closely, thereby providing more precise support and improving the ergonomic effect of the seat. In winter environments, users can activate the temperature plate, which can evenly heat the rubber plate, thereby increasing the temperature of the lumbar support area and ensuring a comfortable driving experience in cold weather. The overall design takes into account dynamic cushioning, adjustability, durability and comfort, which effectively improves the functionality and user experience of the car seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a top view;

[0024] Figure 3 It is a schematic structural diagram of the auxiliary lumbar support part of the present invention;

[0025] Figure 4It is a structural schematic diagram of the back side of the guide rail of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the back plate part of the present invention;

[0027] Figure 6 It is a structural exploded view of the installation box part of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0029] Figure 8 It is a structural schematic diagram of the connecting pipe part of the present invention;

[0030] Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle.

[0031] [Description of Reference Numerals]

[0032] 1. Car seat body; 2. Adjustable backrest body; 3. Slide groove; 4. Auxiliary lumbar support; 5. Auxiliary support mechanism; 501. Auxiliary support side plate; 502. Temperature plate; 503. Rubber plate; 504. Adjustable resistance hinge; 6. Adjustment mechanism; 601. Guide rail; 602. Slider 1; 603. Slider 2; 604. Installation box; 605. Adjustment airbag; 606. Installation plate; 607. Fixing plate; 608. Return spring; 609. Connecting pipe; 610. Micro transmission pump; 611. Breathable groove; 612. Locking plate; 613. Limiting groove; 614. Protective plate; 615. Back plate; 616. Threaded barrel; 617. Screw; 618. Limiting ring. DETAILED DESCRIPTION

[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0034] Please refer to Figures 1 to 9 As shown, a lumbar support mechanism for a car seat of the present invention comprises a car seat body 1, an adjustment mechanism 6 is provided on the top of the car seat body 1, auxiliary support mechanisms 5 are provided on both sides of the adjustment mechanism 6, and an adjustable backrest body 2 is hinged on the back of the car seat body 1;

[0035] The adjusting mechanism 6 includes an adjusting airbag 605, a return spring 608, a screw 617 and a threaded barrel 616. The backs of the three adjusting airbags 605 bodies are fixedly connected to a mounting plate 606. A protective plate 614 is provided on the back of the mounting plate 606. A return spring 608 is fixedly connected to the back of the protective plate 614. The back of the return spring 608 is rotatably connected to a limit ring 618. The inner side of the limit ring 618 is threadedly connected to a screw 617. One end of the two screws 617 is threadedly connected to a threaded barrel 616.

[0036] Auxiliary support mechanism 5, the auxiliary support mechanism 5 includes auxiliary support side plates 501, temperature plates 502 and rubber plates 503. The inner sides of the two auxiliary support side plates 501 are fixedly connected with the temperature plates 502, and the outer sides of the two temperature plates 502 are snap-connected with the rubber plates 503. In the actual implementation process, auxiliary support mechanisms 5 are provided on both sides of the adjustment mechanism 6, and the surface of the car seat body 1 is hinged with an adjustable backrest body 2 to achieve the angle adjustment function of the seat, so as to adapt to the body shape and sitting posture requirements of different drivers. The adjustment airbag 605 is made of high-elastic memory material such as TPU or nano-composite rubber, which has good fatigue resistance and deformation recovery ability, ensuring that a stable support effect can be maintained after long-term use. The reset spring 608 is made of high-carbon steel or nickel-titanium alloy material, which has stable elasticity and strong durability, and can be compressed multiple times. The seat cushion 608 has good deformation recovery ability and is used to adjust the elastic force of the return spring 608, so that the lumbar support system can still maintain a good support effect when the elasticity decays, thereby improving the durability and personalized adaptability of the mechanism. When the driver needs to adjust the seat support, the micro transmission pump 610 can be used to inflate the adjustment airbag 605, thereby enhancing the lumbar support. When braking or accelerating, the driver's back applies pressure to the adjustment airbag 605, and the airbag is compressed to drive the mounting plate 606, causing the fixing plate 607 to move, thereby gradually transmitting the impact force to the protective plate 614 and the return spring 608, the return spring 608 absorbs most of the impact force to form a buffer protection. After long-term use, if the elastic force of the return spring 608 decays, the driver can adjust the compression force of the limit ring 618 by rotating the screw 617 and the threaded cylinder 616, so as to restore the support strength. The auxiliary support side plate 501 is made of shape memory alloy and can be adjusted according to the driver's waist contour to ensure the support fit and provide dynamic support. The temperature plate 502 is made of a flexible graphite heating sheet, which has the characteristics of low power consumption, uniform heating, and high temperature resistance, and can provide comfort in winter. The rubber plate 503 is made of silicone composite material, which provides moderate elasticity and improves the comfort of seat support. The adjustable auxiliary support side plate 501 is suitable for users of different body shapes, improves the fit of the waist and reduces the discomfort caused by lumbar lateral tilt. The temperature plate 502 can heat up quickly in a low temperature environment to avoid tension in the waist muscles caused by the cold and improve the comfort of long-term driving. The rubber plate 503 is made of environmentally friendly materials and has no discomfort when in contact with the skin for a long time. It can also prevent sweat penetration and extend the life of the seat.

[0037] Optionally, a slide groove 3 is provided on the back of the adjustable backrest body 2, and a guide rail 601 is fixedly connected to the inner wall of the slide groove 3. In actual implementation, when the user adjusts the backrest angle, the guide rail 601 in the slide groove 3 can guide the backrest to slide smoothly, making the adjustment process smoother and avoiding the jamming problem caused by loose backrest or uneven friction. The guide rail 601 provides a stable constraint path, making the backrest adjustment process more linear, and can cooperate with the adjustment mechanism of the lumbar support mechanism to improve the adjustment accuracy.

[0038] Optionally, the inner side of the guide rail 601 is slidably connected with a slider 1 602 and a slider 2 603, and one end of the slider 1 602 is rotatably connected with an auxiliary lumbar support 4. In the actual implementation process, one end of the slider 1 602 is rotatably connected with the auxiliary lumbar support 4 to achieve the adjustability and personalized adaptation of the lumbar support. In order to prevent the slider from sliding automatically without external force, in the actual implementation process, a certain damping is provided at the sliding connection between the slider 1 602 and the slider 2 603 and the guide rail 601 to ensure that the slider 1 602 and the slider 2 603 will not be displaced when sliding without human intervention, thereby enhancing the stability of the lumbar support. The auxiliary lumbar support 4 enables it to dynamically fit the waist at different angles, provide precise support, and improve comfort.

[0039] Optionally, the slider 1 602 and the slider 2 603 are respectively slidably connected to the inner wall of the slide slot 3, and one end of the slider 2 603 is rotatably connected to the back plate 615. In the actual implementation process, the slider 1 602 and the slider 2 603 are respectively slidably connected to the inner wall of the slide slot 3, and are equipped with damping control to ensure smooth adjustment without displacement due to external impact. One end of the slider 2 603 is rotatably connected to the back plate 615. By adjusting the position of the slider 2 603, the back plate 615 can change the inclination angle accordingly to adapt to the spinal curves of different users and achieve a more personalized support effect.

[0040] Optionally, two installation boxes 604 are fixedly connected to the inner side of the back plate 615, and two adjacent threaded barrels 616 are respectively rotatably connected to the inner sides of the two installation boxes 604, and two limiting grooves 613 are provided on the inner sides of the two installation boxes 604. In the actual implementation process, the installation box 604 is fixed to the inner side of the back plate 615, as a supporting structure of the threaded barrel 616 and the screw rod 617, to ensure the stability of the adjustment mechanism 6, and the two adjacent threaded barrels 616 are respectively rotatably connected to the inner sides of the two installation boxes 604, so that when the screw rod 617 is adjusted, it can rotate more smoothly along the internal structure of the installation box 604, to prevent tilting or loosening during the adjustment process, and to improve the adjustment accuracy. The threaded barrel 616 is made of precision stainless steel to enhance wear resistance and reduce wear problems in long-term use. When the user needs to adjust the lumbar support strength, the threaded barrel 616 can slide along the limiting groove 613 of the installation box 604 by rotating the screw rod 617, and the preload force of the reset spring 608 can be changed, thereby adjusting the strength of the lumbar support.

[0041] Optionally, a locking plate 612 is slidably connected to the inner side of each limiting groove 613, and one end of two adjacent locking plates 612 is fixedly connected to a fixing plate 607, and the back of the fixing plate 607 is attached to the front of the protective plate 614. In the actual implementation process, the locking plate 612 is slidably connected to the inner wall of the limiting groove 613, which can provide a guiding path for the locking plate 612 to move, avoid failure of the adjustment mechanism 6 due to vibration during driving, improve the safety of use, and prevent severe collision between metal parts during adjustment, reduce noise and wear.

[0042] Optionally, a micro transmission pump 610 is fixedly connected to the front of the back plate 615, and a connecting pipe 609 is fixedly connected to the output end of the micro transmission pump 610. The three ends of the connecting pipe 609 respectively penetrate the three mounting plates 606 and are respectively connected to the three adjusting airbags 605. The backs of the three mounting plates 606 are all provided with air-permeable grooves 611. In the actual implementation process, the micro transmission pump 610 is used to provide the inflation and deflation capacity of the adjusting airbag 605, ensuring that the lumbar support system can be accurately adjusted according to the needs of the user, and a low-noise, energy-saving micro air pump is used to reduce vibration and noise during operation and improve the driving experience. The three ends of the connecting pipe 609 respectively penetrate the three mounting plates 606 and are respectively connected to the three adjusting airbags 605 to ensure that multiple airbags can be adjusted synchronously to make the lumbar support more uniform. The air-permeable groove 611 is used to adjust the airflow to prevent the airbag from being deformed or over-expanded due to long-term pressure, and the air-permeable groove 611 can prevent the user's back from being stuffy when using it in high-temperature weather.

[0043] Optionally, two side walls of the back panel 615 are fixedly connected to two adjustable resistance hinges 504, and one end of the two adjacent adjustable resistance hinges 504 is hinged to one side of the auxiliary support side panel 501. In the actual implementation process, the adjustable resistance hinges 504 are fixed to the two side walls of the back panel 615 to ensure that the auxiliary support side panel 501 can be freely adjusted within different angle ranges and remain stable after the position is set, and the angle will not be easily changed due to external forces. One end of the two adjacent adjustable resistance hinges 504 is connected to one side of the auxiliary support side panel 501, so that the auxiliary support side panel 501 can surround the waist at a certain angle to improve the support fit. The adjustable resistance hinge 504 is connected to the back panel 615, and the angle can be adjusted according to the waist width and body shape of the user, so that the support area fits the waist better.

[0044] Working principle: The lumbar support mechanism of the automobile seat of the present invention realizes multiple optimization functions such as dynamic buffering, precise support, long-term stability and environmental adaptability through the coordinated action of the components such as the adjustable backrest, the micro transmission pump 610, the adjustment airbag 605, the mounting plate 606, the fixing plate 607, the protective plate 614, the return spring 608, the threaded cylinder 616, the auxiliary lumbar support 4, the auxiliary support side plate 501 and the temperature plate 502. When the user needs to adjust the seat back angle, the user can first manually adjust the inclination of the adjustable backrest body 2, and then start the micro transmission pump 610. Gas is delivered to the regulating airbag 605 through the connecting pipe 609, so that the regulating airbag 605 expands to provide adaptive support. The user can try to sit to ensure the best match of the lumbar support, and enter the driving state after adjusting to the ideal state. During the driving process of the vehicle, if braking occurs, the user leans forward due to inertia, and the back will exert pressure on the multiple regulating airbags 605. After being pressed, the airbag pushes the mounting plate 606, causing the fixing plate 607 to move and gradually transmit force to the protective plate 614, which further acts on the return spring 608. The return spring 60 8 absorbs the impact force by deformation, thereby effectively buffering the impact on the user's waist and back during braking, improving driving safety and comfort. As the use time increases, the elasticity of the return spring 608 may gradually decay, so an adjustable compensation mechanism is designed. The user can fix the protective plate 614 with one hand and rotate the threaded barrel 616 with the other hand to adjust the length of the screw 617, and then apply additional pressure to the return spring 608 through the limit ring 618, thereby effectively extending the service life of the return spring 608 and maintaining stable buffering performance. In addition, the auxiliary lumbar support 4 of the seat is further The personalized adaptability of the support is further improved. For users with wider waists, the auxiliary support side panels 501 can be adjusted to fit the waist curve closely, providing more precise lateral support, enhancing waist stability, and improving the ergonomics of the seat. In winter, the user can activate the temperature plate 502, which evenly heats the rubber plate 503 to increase the temperature of the waist support area and ensure a comfortable driving experience in cold weather. The overall design takes into account dynamic cushioning, adjustability, durability and comfort, effectively improving the functionality of the car seat and the user experience.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lumbar support mechanism for a car seat, comprising a car seat body (1), characterized in that: The top of the automobile seat body (1) is provided with an adjustment mechanism (6), both sides of the adjustment mechanism (6) are provided with auxiliary support mechanisms (5), and the back of the automobile seat body (1) is hinged with an adjustable backrest body (2); An adjustment mechanism (6), the adjustment mechanism (6) comprising an adjustment airbag (605), a return spring (608), a screw (617) and a threaded barrel (616), the back sides of the three adjustment airbags (605) bodies are fixedly connected to a mounting plate (606), the back side of the mounting plate (606) is provided with a protective plate (614), the back side of the protective plate (614) is fixedly connected to a return spring (608), the back side of the return spring (608) is rotatably connected to a limit ring (618), the inner side of the limit ring (618) is threadedly connected to a screw (617), and one end of the two screws (617) is threadedly connected to a threaded barrel (616); The auxiliary support mechanism (5) comprises an auxiliary support side plate (501), a temperature plate (502) and a rubber plate (503), wherein the inner sides of the two auxiliary support side plates (501) are fixedly connected to the temperature plate (502), and the outer sides of the two temperature plates (502) are snap-connected to the rubber plate (503).

2. The lumbar support mechanism for a car seat according to claim 1, characterized in that: A slide groove (3) is provided on the back of the adjustable backrest body (2), and a guide rail (601) is fixedly connected to the inner wall of the slide groove (3).

3. The lumbar support mechanism for a car seat according to claim 2, characterized in that: The inner side of the guide rail (601) is slidably connected to a slider 1 (602) and a slider 2 (603), and one end of the slider 1 (602) is rotatably connected to an auxiliary lumbar support (4).

4. The automobile seat lumbar support mechanism according to claim 3, characterized in that: The slider 1 (602) and the slider 2 (603) are respectively slidably connected to the inner wall of the slide groove (3), and one end of the slider 2 (603) is rotatably connected to the back plate (615).

5. The lumbar support mechanism for a car seat according to claim 4, characterized in that: Two installation boxes (604) are fixedly connected to the inner side of the back plate (615), and the two adjacent threaded cylinders (616) are rotatably connected to the inner sides of the two installation boxes (604) respectively. Two limiting grooves (613) are provided on the inner sides of the two installation boxes (604).

6. The automobile seat lumbar support mechanism according to claim 5, characterized in that: The inner side of each limiting groove (613) is slidably connected to a locking plate (612), one end of two adjacent locking plates (612) is fixedly connected to a fixing plate (607), and the back side of the fixing plate (607) is attached to the front side of the protective plate (614).

7. The lumbar support mechanism for a vehicle seat according to claim 6, characterized in that: A micro transmission pump (610) is fixedly connected to the front of the back plate (615), and a connecting pipe (609) is fixedly connected to the output end of the micro transmission pump (610). The three ends of the connecting pipe (609) respectively pass through the three mounting plates (606) and are respectively connected to the three regulating air bags (605). The backs of the three mounting plates (606) are all provided with air permeable grooves (611).

8. The lumbar support mechanism for a vehicle seat according to claim 7, characterized in that: Two side walls of the back plate (615) are fixedly connected to two adjustable resistance hinges (504), and one end of two adjacent adjustable resistance hinges (504) is hinged to one side of the auxiliary support side plate (501).

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