Automobile seat cushion adjusting mechanism

Abstract

The utility model discloses an automobile seat cushion adjusting mechanism, and relates to the technical field of vehicles, and the mechanism comprises a bottom plate, a seat cushion adjusting mechanism and a seat cushion adjusting mechanism, a fixed supporting piece is arranged at one end of the bottom plate away from the seat framework; the slideway is fixedly connected with the bottom plate; the height of the slideway is gradually increased from one end close to the seat framework to one end far away from the seat framework; the supporting structure is provided with a first connecting part and a second connecting part; the first connecting part is movably connected with the slide way; the air bag body is arranged between the fixed supporting piece and the second connecting part, communicates with the air source assembly and is used for pushing the supporting structure to move in the direction away from the seat framework, so that the side, away from the seat framework, of the supporting structure is raised; the reset piece is arranged between the fixed supporting piece and the second connecting part and used for pulling the supporting structure to move in the direction close to the seat framework; the mechanism has the stretching and lifting functions, and the problem that a traditional automobile seat cushion adjusting mechanism cannot be attached to the thighs and only supports the shanks during stretching is effectively solved.

Description

Technical Field

[0001] This application generally relates to the field of vehicle technology, and specifically to a car seat cushion adjustment mechanism. Background Technology

[0002] With the rapid development of the automotive industry, people have increasingly higher demands for driving comfort, leading to the more frequent use of seat cushion extension mechanisms. However, for taller individuals with longer legs, when the seat cushion extends to support the calves, the thighs near the knees may be unsupported, failing to provide adequate support. Therefore, we propose a car seat cushion adjustment mechanism to address this issue. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a car seat cushion adjustment mechanism that solves the problem that traditional seat cushion extension mechanisms cannot fit the thighs when extended and only support the calves.

[0004] This application provides a car seat cushion adjustment mechanism, including:

[0005] A base plate is mounted on the seat frame; a fixing support is provided at the end of the base plate away from the seat frame.

[0006] The slide rail is fixedly connected to the base plate, and the height of the slide rail increases from the end closer to the seat frame to the end farther away from the seat frame.

[0007] A supporting structure having a first connecting portion and a second connecting portion; the first connecting portion is movably connected to the slide rail.

[0008] An airbag body is disposed between the fixed support member and the second connecting part. The airbag body is connected to the air source assembly and is used to push the support structure to move away from the seat frame so that the side of the support structure away from the seat frame is raised.

[0009] A reset member is disposed between the fixed support member and the second connecting part, and is used to pull the support structure to move closer to the seat frame.

[0010] According to the technical solution provided in the embodiments of this application, the slide rails are disposed on both sides of the base plate;

[0011] The supporting structure includes:

[0012] A sliding support member, comprising a sliding section and a connecting section; the lower surface of the sliding section forms a first connecting portion for sliding connection with the base plate; the connecting section forms a second connecting portion on the side near the seat frame;

[0013] A rotating support member is rotatably connected to the sliding support member; guide sliders on both sides of the rotating support member are slidably connected to the slide rail.

[0014] When the air source assembly inflates the airbag, the airbag expands, which in turn pushes the sliding support member to slide away from the seat frame relative to the base plate. At the same time, the guide slider slides along the slide rail, causing the rotating support member to rotate relative to the sliding support member, thereby raising the height of the free end of the rotating support member. When the air source assembly deflates the airbag, the force of the reset member causes the sliding support member to slide towards the seat frame relative to the base plate. At the same time, the guide slider slides along the slide rail, and the height of the free end of the rotating support member decreases.

[0015] According to the technical solution provided in the embodiments of this application, the slide is an inclined structure in which the height of the bottom plate increases along the direction away from the seat frame on the side of the supporting structure near the supporting structure.

[0016] The support structure includes:

[0017] A sliding support member has a sliding section and a connecting section; the lower surface of the sliding section forms a first connecting portion for sliding connection with the base plate; the connecting section forms a second connecting portion on the side near the seat frame.

[0018] The base plate and the sliding support are respectively connected to limit sliders, and the limit slider on the base plate is slidably connected to the limit structure on the sliding support; the limit slider on the sliding support is slidably connected to the limit structure on the base plate.

[0019] When the air source assembly inflates the airbag, the airbag expands, which in turn pushes the sliding support member to slide away from the seat frame relative to the base plate, causing the end of the sliding support member to move away from the seat frame. At the same time, the limiting slider slides along the limiting structure to restrict the movement of the sliding support member along the extension direction of the base plate. When the air source assembly deflates the airbag, the force of the reset member causes the sliding support member to slide away from the base plate towards the seat frame, causing the height of the free end of the sliding support member to decrease.

[0020] According to the technical solution provided in the embodiments of this application, the upper surface of the sliding section and the lower surface of the rotating support are respectively provided with U-shaped brackets, and all the U-shaped brackets are connected by a rotating shaft;

[0021] The rotating shaft has a slot, which engages with a retaining spring to limit the relative position of the U-shaped bracket.

[0022] According to the technical solution provided in the embodiments of this application, multiple limiting grooves are provided on the sliding section of the sliding support member, and limiting bolts are provided through the limiting grooves, and the limiting bolts are connected to the seat frame through the bottom plate.

[0023] According to the technical solution provided in the embodiments of this application, multiple guide rails are provided on the base plate, and the sliding section of the sliding support is also provided with a sliding groove adjacent to the limiting through groove, and the sliding groove is slidably connected to the guide rails.

[0024] According to the technical solution provided in the embodiments of this application, the slide is a straight slide or a parabolic slide.

[0025] According to the technical solution provided in the embodiments of this application, when a support structure is installed on the base plate, the support structure is used to raise the front end area of ​​the seat frame as a whole.

[0026] According to the technical solution provided in the embodiments of this application, when two support structures are installed on the base plate, the two support structures are used to perform zoned adjustments corresponding to different positions of the front end area of ​​the seat frame.

[0027] According to the technical solution provided in the embodiments of this application, the limiting structure is a through groove formed on the side wall of the base plate and / or on the side wall of the sliding support.

[0028] As can be seen from the above technical solution, this application has at least the following beneficial effects:

[0029] This application discloses an automotive seat cushion adjustment mechanism, comprising: a base plate mounted on a seat frame, with a fixed support member at the end of the base plate away from the seat frame; a slide rail fixedly connected to the base plate, the height of which increases from the end closer to the seat frame to the end farther away from the seat frame; a support structure having a first connecting portion and a second connecting portion, the first connecting portion being movably connected to the slide rail; an airbag body provided between the fixed support member and the second connecting portion, the airbag body being connected to an air source assembly for pushing the support structure to move away from the seat frame, thereby raising the side of the support structure away from the seat frame; and a reset member provided between the fixed support member and the second connecting portion for pulling the support structure to move closer to the seat frame.

[0030] This application, by designing a movable connecting slide, support structure, airbag, and reset component on the base plate, enables the mechanism to have both extension and lifting functions. Specifically, when the air source component inflates the airbag, it can push the support structure to move away from the seat frame along the slide and rise, thus achieving both extension and lifting functions. When the airbag deflates, the reset component can pull the support structure to move closer to the seat frame along the slide and lower its own height. This effectively solves the problem that traditional car seat cushion adjustment mechanisms cannot fit the thighs when extended, only supporting the calves. It is suitable for people of different body types and meets the requirements of driving comfort. Attached Figure Description

[0031] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0032] Figure 1 An exploded view of the first structure of a car seat cushion adjustment mechanism.

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of a car seat cushion adjustment mechanism when it is not in operation.

[0034] Figure 3 for Figure 1 A schematic diagram of the structure of a car seat cushion adjustment mechanism in operation.

[0035] Figure 4 When in an inactive state Figure 1 A schematic diagram showing the connection relationships of the various components of a car seat cushion adjustment mechanism.

[0036] Figure 5 When in working state Figure 1 A schematic diagram showing the connection relationships of the various components of a car seat cushion adjustment mechanism.

[0037] Figure 6 for Figure 1 A schematic diagram showing the connection between the central airbag and the fixed support.

[0038] Figure 7 for Figure 1 A schematic diagram of the first type of midsole plate structure.

[0039] Figure 8 for Figure 7 A schematic diagram of the middle slide.

[0040] Figure 9 for Figure 1 A schematic diagram of the second structure of the midsole plate.

[0041] Figure 10 for Figure 9A schematic diagram of the middle slide.

[0042] Figure 11 This is a schematic diagram of the rotating shaft.

[0043] Figure 12 This is a schematic diagram of the snap ring structure.

[0044] Figure 13 This is a schematic diagram showing the connection between the rotating support and the guide slider.

[0045] Figure 14 This is a schematic diagram showing the connection relationship between the rotating support and the sliding support.

[0046] Figure 15 This is a schematic diagram showing the connection between the rotating shaft and the U-shaped bracket.

[0047] Figure 16 This is a schematic diagram of a split-type structure for a car seat cushion adjustment mechanism.

[0048] Figure 17 For application Figure 16 A diagram of a car seat.

[0049] Figure 18 This is a schematic diagram of a car seat cushion adjustment mechanism that is an integrated structure.

[0050] Figure 19 For application Figure 18 A diagram of a car seat.

[0051] Figure 20 An exploded view of the second structure of a car seat cushion adjustment mechanism.

[0052] Figure 21 for Figure 20 A diagram showing the car seat cushion adjustment mechanism when it is not in operation.

[0053] Figure 22 for Figure 21 A schematic diagram of the overall structure of a car seat cushion adjustment mechanism.

[0054] Figure 23 for Figure 20 A schematic diagram of the car seat cushion adjustment mechanism in operation.

[0055] Figure 24 for Figure 23 A schematic diagram of the overall structure of a car seat cushion adjustment mechanism.

[0056] Figure 25 for Figure 20 A schematic diagram showing the connection relationships of the various components of a car seat cushion adjustment mechanism.

[0057] Figure 26 for Figure 20 A schematic diagram showing the connection between the bottom plate and the sliding support.

[0058] Figure 27 for Figure 20 Overall structural diagram of the sliding support component.

[0059] Figure 28 for Figure 20 Side view of the sliding support component.

[0060] Figure 29 for Figure 20 Overall structural diagram of the midsole plate.

[0061] Figure 30 for Figure 20 Side view of the midsole plate.

[0062] The following are the labeling elements in the diagram: 1. Seat frame; 2. Base plate; 3. Fixed support; 4. Slide rail; 5. Sliding support; 6. Airbag body; 7. Reset component; 8. Air source assembly; 9. Rotating support; 10. Guide slider; 11. U-shaped bracket; 12. Rotating shaft; 13. Slot; 14. Snap ring; 15. Limiting through slot; 16. Limiting bolt; 17. Guide rail; 18. Fixing screw; 19. Fixing buckle; 20. Fixing hole; 21. Through slot; 22. Limiting slider. Detailed Implementation

[0063] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0064] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0065] To make the car seat cushion adjustment mechanism provided in this application embodiment clearer and easier to understand, the mechanism will be described below with reference to the accompanying drawings.

[0066] This organization includes:

[0067] The base plate 2 is mounted on the seat frame 1; a fixing support 3 is provided at the end of the base plate 2 away from the seat frame 1.

[0068] Slide 4 is fixedly connected to the base plate 2. The height of slide 4 increases from the end closer to the seat frame 1 to the end farther away from the seat frame 1.

[0069] The support structure has a first connecting part and a second connecting part; the first connecting part is movably connected to the slide rail 4.

[0070] Airbag 6 is located between the fixed support 3 and the second connecting part. Airbag 6 is connected to the air source assembly 8 and is used to push the support structure to move away from the seat frame 1 so that the side of the support structure away from the seat frame 1 is raised.

[0071] The reset member 7 is located between the fixed support member 3 and the second connecting part, and is used to pull the support structure to move closer to the seat frame 1.

[0072] It should be noted that the seat frame 1 refers to the structural part that provides support under the seat. The base plate 2, as the basic load-bearing component of the vehicle seat cushion adjustment mechanism, has a fixed support 3 at its end; here, as... Figure 4 and Figure 5 As shown, the base plate 2 can be connected to the seat frame 1 via fixing screws 18. The fixing support 3 is used to install the airbag body 6; the airbag body 6 is, for example, an air bag. The reset member 7 is elastic, for example, an elastic band or a spring.

[0073] This application incorporates a movable sliding track 4, a support structure, an airbag 6, and a reset component 7 on the base plate 2, enabling the mechanism to perform both extension and lifting functions. Specifically, when the air source component 8 inflates the airbag 6, it pushes the support structure along the sliding track 4 to move away from the seat frame 1 and raise it, thus achieving both extension and lifting functions. When the airbag 6 deflates, the reset component 7 pulls the support structure along the sliding track 4 to move closer to the seat frame 1 and lowers its height. This effectively solves the problem that traditional car seat cushion adjustment mechanisms cannot fit the thighs when extended, only supporting the calves, making it suitable for people of different body types and meeting driving comfort requirements.

[0074] Among them, slide 4 has at least two design forms.

[0075] First design form:

[0076] Slides 4 are located on both sides of the base plate 2; there are two slides 4. The type of slide 4 is not limited here; for example, it can be a straight slide or a parabolic slide, such as... Figure 7 As shown, the slide 4 on the base plate 2 is a parabolic slide, such as... Figure 8 As shown, a parabolic slide refers to a slide 4 whose longitudinal section away from the base plate 2 has a parabolic shape; for example... Figure 9 As shown, the slide 4 on the base plate 2 is a straight slide, such as... Figure 9 As shown, a straight slide refers to a slide 4 whose longitudinal section is straight on the side away from the base plate 2.

[0077] like Figure 1As shown, this figure is an exploded view of the first structure of the car seat cushion adjustment mechanism provided in this application embodiment. The support structure includes:

[0078] Slide 4 is set on the base plate 2, and the height of slide 4 increases from the end closer to the seat frame 1 to the end farther away from the seat frame 1.

[0079] The sliding support 5 has a sliding section and a connecting section; the lower surface of the sliding section forms a first connecting part for sliding connection with the base plate 2; the connecting section forms a second connecting part on the side near the seat frame 1.

[0080] Rotary support 9 is rotatably connected to sliding support 5; for example Figure 13 The guide sliders 10 on both sides of the rotating support 9 shown are slidably connected to the slide rail 4;

[0081] When the air source assembly 8 inflates the airbag body 6, the airbag body 6 expands, which in turn pushes the sliding support 5 to slide away from the seat frame 1 relative to the base plate 2. At the same time, the guide slider 10 slides along the slide rail 4, causing the rotating support 9 to rotate relative to the sliding support 5, so that the height of the free end of the rotating support 9 increases. When the air source assembly 8 deflates the airbag body 6, the force of the reset member 7 causes the sliding support 5 to slide closer to the seat frame 1 relative to the base plate 2. At the same time, the guide slider 10 slides along the slide rail 4, and the height of the free end of the rotating support 9 decreases.

[0082] It should be noted that the slide rail 4 is used to gradually lift the rotating support 9 as the sliding support 5 moves; for example... Figure 6 As shown, the airbag body 6 is connected by a fixing buckle 19 and a fixing support 3, making it easier to assemble and disassemble the airbag body 6.

[0083] like Figure 2 As shown, when this mechanism is in a non-operating state, the air supply component 8 does not supply air to the airbag body 6, the reset component 7 is in a natural state, and the airbag body 6 is in a flattened state; as Figure 3 As shown, when the mechanism is in operation, the air source assembly 8 inflates the airbag 6, causing the airbag 6 to gradually expand. The reset member 7 deforms during this expansion. The expansion of the airbag 6 pushes the sliding support member 5 relative to the base plate 2. Simultaneously, the rotating support member 9 slides synchronously and is gradually lifted by the slide rail 4. In other words, by switching the inflation / deflation state of the airbag 6 through the air source assembly 8, the relative position of the sliding support member 5 and the relative height of the rotating support member 9 are changed, thus enabling the mechanism to perform both extension and lifting functions. Furthermore, depending on the amount of air in the airbag 6, the reset member 7 moves the sliding support member 5 to change the height at which the rotating support member 9 is lifted.

[0084] Here, the relative height of the rotating support 9 refers to the straight-line distance between the free end of the rotating support 9 and the extension line of the base plate 2. The air source assembly 8 is, for example, an air pump, which is connected to the airbag body 6 via a connecting pipe.

[0085] Furthermore, the upper surface of the sliding section and the lower surface of the rotating support 9 are respectively provided with U-shaped brackets 11, and all U-shaped brackets 11 are connected by a rotating shaft 12;

[0086] A slot 13 is provided on the rotating shaft 12, which engages with the retaining spring 14 to limit the relative position of the U-shaped bracket 11.

[0087] Specifically, such as Figure 14 As shown, the upper surface of the sliding section of the sliding support 5 and the lower surface of the rotating support 9 are respectively provided with U-shaped brackets 11, and all U-shaped brackets 11 are connected by a rotating shaft 12; here, the U-shaped brackets 11 are respectively welded to the upper surface of the sliding section of the sliding support 5 and the lower surface of the rotating support 9, and the U-shaped brackets 11 have through holes, such as... Figure 15 As shown, the rotating shaft 12 passes through all the through holes of the U-shaped brackets 11, so that the sliding support 5 and the rotating support 9 form a rotating connection. Figure 11 and Figure 12 As shown, a slot 13 is provided on the rotating shaft 12, and the slot 13 is engaged with the snap ring 14 to limit the relative position of the U-shaped bracket 11.

[0088] In order to enable the sliding support 5 to slide stably relative to the base plate 2, this application also has the following design structure: the sliding section of the sliding support 5 is provided with multiple limiting slots 15, the number of limiting channels 15 is at least two, and the limiting bolt 16 passes through the limiting slot 15 and the base plate 2 and is connected to the seat frame 1; when the sliding support slides relative to the base plate 2, the limiting slot 15 moves relative to the limiting bolt 16, and the threaded part of the limiting bolt limits the sliding support 5 to prevent the sliding support 5 from swaying left and right relative to the base plate 2.

[0089] In addition, such as Figure 7 and Figure 9 As shown, multiple guide rails 17 are provided on the base plate 2. The sliding section of the sliding support member 5 is also provided with a sliding groove adjacent to the limiting through groove 15. The sliding groove is slidably connected to the guide rails 17, so that the sliding support member 5 can slide relative to the base plate 2. Here, the extension direction of the guide rails 17 is perpendicular to the connecting section.

[0090] The second form:

[0091] The slide 4 is an inclined structure that rises in height on the side of the base plate 2 near the supporting structure in a direction away from the seat frame 1;

[0092] like Figure 20As shown, this figure is an exploded view of a second structure of the car seat cushion adjustment mechanism provided in an embodiment of this application. The support structure includes:

[0093] The sliding support 5 has a sliding section and a connecting section; the lower surface of the sliding section forms a first connecting portion for sliding connection with the base plate 2; the connecting section forms a second connecting portion on the side near the seat frame 1; as shown... Figure 25 As shown, the base plate 2 is connected to the seat frame 1 by fixing screws.

[0094] like Figure 27 and Figure 28 As shown, the sliding support 5 has a slide rail 4 and a fixing hole 20 on both sides. The fixing hole 20 is used to install the limiting slider 22. Similarly, as shown... Figure 29 and Figure 30 As shown, the base plate 2 has slide rails 4 and fixing holes 20 on both sides, as follows: Figure 26 As shown, the limiting slider 22 on the base plate 2 is slidably connected to the limiting structure on the sliding support 5; the limiting slider 22 on the sliding support 5 is slidably connected to the limiting structure on the base plate 2; here, as... Figure 20 As shown, the limiting structure is a through groove 21 formed on the side wall of the base plate 2 and / or on the side wall of the sliding support member 5.

[0095] like Figure 21 and Figure 22 As shown, when this mechanism is in a non-operating state, the air supply component 8 does not supply air to the airbag body 6, the reset component 7 is in a natural state, and the airbag body 6 is in a flattened state; as Figure 23 and Figure 24 As shown, when the air source assembly 8 inflates the airbag body 6, the airbag body 6 expands, which in turn pushes the sliding support 5 to slide relative to the base plate 2 away from the seat frame 1, causing the end of the sliding support 5 away from the seat frame 1 to rise. At the same time, the limiting slider 22 slides along the limiting structure to restrict the movement of the sliding support 5 along the extension direction of the base plate 2. When the air source assembly 8 deflates the airbag body 6, the force of the reset member 7 causes the sliding support 5 to slide relative to the base plate 2 towards the seat frame 1, causing the height of the free end of the sliding support 5 to decrease.

[0096] The inflation and deflation of the airbag 6 and the force of the reset component 7 drive the sliding support 5 to move relative to the base plate 2 and rise or fall, thus achieving the function of simultaneously extending and raising or shortening and lowering.

[0097] Taking the first form of this organization as an example,

[0098] When a support structure is installed on the base plate 2, the support structure is used to raise the front end area of ​​the corresponding seat frame 1 as a whole.

[0099] When two support structures are installed on the base plate 2, the two support structures are used to make zoned adjustments for different positions in the front end area of ​​the seat frame 1.

[0100] Among them, such as Figure 16 and Figure 17 As shown, this car seat cushion adjustment mechanism is a split structure, meaning that two support structures are installed on the base plate 2, and two side-by-side support structures are set on the same seat frame 1. Each support structure corresponds to one of the driver's legs. For example, when this mechanism is applied to an automatic transmission vehicle, since automatic transmission vehicles lack a clutch pedal, the driver's left leg is in a resting state during driving, resulting in inconsistent leg function. Through the individual adjustment of this car seat cushion adjustment mechanism, the two support structures can meet the different comfort needs of the legs. In other types of vehicles or in the non-driver's seat of an automatic transmission vehicle, an integrated structure can be used for quick adjustment.

[0101] like Figure 18 and Figure 19 As shown, the car seat cushion adjustment mechanism is an integrated structure, that is, a support structure is installed on the base plate 2. The support structure can be set to correspond to the human legs. This form can be applied to other types of vehicles or the non-driver's seat of automatic transmission vehicles. By adjusting the car seat cushion through this car seat cushion adjustment mechanism, the comfort needs of both legs can be met at the same time, and the purpose of quick adjustment can be achieved.

[0102] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A car seat cushion adjustment mechanism, characterized in that, include: A base plate (2) is mounted on a seat frame (1); a fixed support (3) is provided at the end of the base plate (2) away from the seat frame (1); The slide (4) is fixedly connected to the base plate (2), and the height of the slide (4) increases from the end closer to the seat frame (1) to the end farther away from the seat frame (1); The support structure has a first connecting part and a second connecting part; the first connecting part is movably connected to the slide (4); Airbag (6), the airbag (6) is disposed between the fixed support (3) and the second connecting part, the airbag (6) is connected to the air source assembly (8) and is used to push the support structure to move away from the seat frame (1) so that the side of the support structure away from the seat frame (1) is raised; The reset member (7) is located between the fixed support member (3) and the second connecting part, and is used to pull the support structure to move closer to the seat frame (1).

2. The car seat cushion adjustment mechanism according to claim 1, characterized in that, The slide rail (4) is located on both sides of the base plate (2); The supporting structure includes: A sliding support (5) has a sliding section and a connecting section; the lower surface of the sliding section forms the first connecting part for sliding connection with the base plate (2); the side of the connecting section near the seat frame (1) forms the second connecting part; Rotary support (9) is rotatably connected to sliding support (5); guide sliders (10) on both sides of the rotating support (9) are slidably connected to the slide rail (4); When the air source assembly (8) inflates the airbag (6), the airbag (6) expands, thereby pushing the sliding support (5) to slide away from the seat frame (1) relative to the base plate (2). At the same time, the guide slider (10) slides along the slide rail (4), causing the rotating support (9) to rotate relative to the sliding support (5), so that the free end of the rotating support (9) is raised. When the air source assembly (8) deflates the airbag (6), the force of the reset member (7) causes the sliding support (5) to slide closer to the seat frame (1) relative to the base plate (2). At the same time, the guide slider (10) slides along the slide rail (4), and the free end of the rotating support (9) is lowered.

3. The car seat cushion adjustment mechanism according to claim 1, characterized in that, The slide (4) is an inclined structure on the side of the base plate (2) near the support structure that rises in height away from the seat frame (1); The supporting structure includes: A sliding support (5) has a sliding section and a connecting section; the lower surface of the sliding section forms the first connecting part for sliding connection with the base plate (2); the side of the connecting section near the seat frame (1) forms the second connecting part; The base plate (2) and the sliding support (5) are respectively connected to a limiting slider (22), and the limiting slider (22) on the base plate (2) is slidably connected to the limiting structure on the sliding support (5); the limiting slider (22) on the sliding support (5) is slidably connected to the limiting structure on the base plate (2); When the air source assembly (8) inflates the airbag (6), the airbag (6) expands, thereby pushing the sliding support (5) relative to the base plate (2) to slide away from the seat frame (1), so that the sliding support (5) is away from the seat frame (1). At the same time, the limiting slider (22) slides along the limiting structure to restrict the sliding support (5) from moving along the extension direction of the base plate (2). When the air source assembly (8) deflates the airbag (6), the force of the reset member (7) drives the sliding support (5) relative to the base plate (2) to slide closer to the seat frame (1), so that the height of the free end of the sliding support (5) decreases.

4. The car seat cushion adjustment mechanism according to claim 2, characterized in that, The upper surface of the sliding section and the lower surface of the rotating support (9) are respectively provided with U-shaped brackets (11), and all the U-shaped brackets (11) are connected by a rotating shaft (12); The rotating shaft (12) has a slot (13) which engages with a snap ring (14) to limit the relative position of the U-shaped bracket (11).

5. A car seat cushion adjustment mechanism according to claim 2 or 3, characterized in that, The sliding support (5) has multiple limiting slots (15) on its sliding section. A limiting bolt (16) is provided through the limiting slot (15), and the limiting bolt (16) passes through the base plate (2) and connects to the seat frame (1).

6. The car seat cushion adjustment mechanism according to claim 5, characterized in that, Multiple guide rails (17) are provided on the base plate (2), and the sliding section of the sliding support (5) is also provided with a sliding groove adjacent to the limiting through groove (15), and the sliding groove is slidably connected to the guide rail (17).

7. The car seat cushion adjustment mechanism according to claim 2, characterized in that, The slide (4) is a straight slide or a parabolic slide.

8. The car seat cushion adjustment mechanism according to claim 1, characterized in that, When a support structure is installed on the base plate (2), the support structure is used to raise the front end area of ​​the seat frame (1) as a whole.

9. The car seat cushion adjustment mechanism according to claim 1, characterized in that, When two support structures are installed on the base plate (2), the two support structures are used to make zoned adjustments corresponding to different positions of the front end area of ​​the seat frame (1).

10. The car seat cushion adjustment mechanism according to claim 3, characterized in that, The limiting structure is a through groove (21) formed on the side wall of the base plate (2) and / or on the side wall of the sliding support (5).

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