Automobile seat cushion inclination angle adjusting mechanism capable of greatly adjusting sitting posture

Abstract

The utility model relates to the field of automobile seats, in particular to an automobile seat cushion inclination angle adjusting mechanism capable of greatly adjusting a sitting posture. The technical problems that in the using process of an existing automobile seat inclination angle adjusting device, due to the fact that a front lifting mechanism usually comprises two angle adjusters, the production cost of the whole adjusting device is increased, meanwhile, spline rods are adopted for synchronization on the two sides, and the lateral strength of a seat frame is often weak are solved. According to the technical scheme, the automobile seat cushion inclination angle adjusting mechanism capable of greatly adjusting the sitting posture comprises a cushion frame, a front upper linkage piece, a rear linkage piece, a front lower linkage piece, a front driving piece, a rear driving piece and a cushion base. According to the utility model, a special connecting structure is arranged to replace the original spline rod for synchronization, so that the mechanism can adjust the inclination angle of the cushion at a large angle, has higher lateral strength, is suitable for a zero-gravity seat, realizes the zero-gravity posture of a human body, and ensures the comfort.

Description

Technical Field

[0001] The utility model relates to the field of vehicle seats, in particular to a vehicle seat cushion inclination angle adjusting mechanism with a large range of sitting posture adjustment. Background Art

[0002] With the development of the automotive industry technology in the market, there are further requirements for riding comfort, and the adjustment functions of vehicle seats are becoming more and more abundant. In related technologies, a zero-gravity posture seat can meet the requirements of riding comfort to the greatest extent. The core difference between a zero-gravity posture seat and a general seat is that the angle of its seat cushion can be adjusted greatly. In a traditional vehicle seat inclination angle adjusting device, for example, a seat assembly disclosed in Patent Application No. 202320026090.6 includes a seat frame installed on a slide rail assembly, and the front end of the seat frame is connected to the slide rail assembly through a front lifting structure; the front lifting structure is composed of a transmission spline rod, a left lifting structure and a right lifting structure; the left lifting structure is composed of a left angle adjuster, an upper left connecting plate, a lower left connecting plate and an angle adjusting motor; the right lifting structure is composed of a right angle adjuster, an upper right connecting plate and a lower right connecting plate. By providing a large lifting height for the front end of the seat, the function of the zero-gravity seat is ensured. However, in this vehicle seat inclination angle adjusting device, the front lifting mechanism includes two angle adjusters on the left and right, resulting in a high cost; the two sides are synchronized by a spline rod, and the lateral strength of the seat frame is weak. Summary of the Utility Model

[0003] In order to overcome the problem that in the process of using the existing vehicle seat inclination angle adjusting device, the production cost of the entire adjusting device is increased because the front lifting mechanism usually includes two angle adjusters, and at the same time, the two sides are often synchronized by a spline rod, resulting in weak lateral strength of the seat frame.

[0004] The technical solution of the utility model is: a vehicle seat cushion inclination angle adjusting mechanism with a large range of sitting posture adjustment, which includes a seat cushion frame, a front upper linkage, a rear linkage, a front lower linkage, a front driving member, a rear driving member and a seat cushion base; a front upper linkage is arranged at one end of the seat cushion frame; a rear linkage is arranged at the other end of the seat cushion frame; a front lower linkage is arranged at the lower end of the front upper linkage; one end of the front lower linkage is connected to one end of the seat cushion base; the lower end of the rear linkage is connected to the other end of the seat cushion base; one end of the front driving member is connected to the seat cushion base; the other end of the front driving member is connected to the front lower linkage; the rear driving member is arranged on the rear linkage and is connected to the seat cushion base at the same time. The front driving member can drive the front lower linkage to rotate, and the rear driving member can drive the rear linkage to rotate.

[0005] Preferably, the front upper linkage, the rear linkage, and the front lower linkage are provided to achieve multi-angle adjustment of the inclination angle adjustment mechanism. Through the settings of the front drive member and the rear drive member, the front lower linkage and the rear linkage are respectively driven to work. Through the settings of the seat cushion frame and the seat cushion base, the state of the parts of the seat cushion inclination angle adjustment mechanism can be confirmed.

[0006] Preferably, the seat cushion frame includes a first connection point, a second connection point, and a frame body; the first connection point and the second connection point are arranged at both ends of the frame body; the front upper linkage includes a third connection point, a fourth connection point, and a front upper linkage body; the third connection point and the fourth connection point are arranged at both ends of the front upper linkage body. The first connection point and the third connection point are rotatably connected;

[0007] Preferably, the rear linkage includes a fifth connection point, a sixth connection point, and a rear drive support; the fifth connection point and the sixth connection point are arranged at both ends of the rear drive support. The second connection point and the fifth connection point are rotatably connected.

[0008] Preferably, the front lower linkage includes a seventh connection point, an eighth connection point, a ninth connection point, and a front lower linkage body; the fourth connection point and the seventh connection point are rotatably connected.

[0009] Preferably, the seat cushion base includes an eleventh connection point, a twelfth connection point, a front stop point, a front drive support, a rear stop point, a toothed plate, and a base body; a front stop point is arranged on one side of the eleventh connection point; a toothed plate is arranged on one side of the twelfth connection point; a rear stop point is arranged on one side of the toothed plate; the eleventh connection point and the eighth connection point are rotatably connected; the twelfth connection point and the sixth connection point are rotatably connected; the seat cushion frame, the front upper linkage, the rear linkage, the front lower linkage, and the seat cushion base form a five-bar linkage.

[0010] Preferably, the front drive member includes a tenth connection point and a front drive body; the ninth connection point and the tenth connection point are rotatably connected; the front drive body is fixed on the front drive support;

[0011] Preferably, the rear drive member includes a gear and a rear drive body; the rear drive body is fixed on the rear drive support; the gear of the rear drive member meshes with the toothed plate of the seat cushion base.

[0012] Preferably, the front drive member can drive the front lower linkage to rotate, realizing the raising or lowering of the front end of the seat cushion; the rear drive member can drive the rear linkage to rotate, realizing the raising or lowering of the rear end of the seat cushion. By raising (or lowering) the front end of the seat cushion frame while lowering (or raising) the rear end, a large-angle adjustment of the seat cushion inclination angle can be achieved, which is used for the attitude adjustment of the zero-gravity seat.

[0013] The beneficial effects of the present utility model:

[0014] 1. By setting a special connection structure to replace the original spline rod synchronization, the mechanism can adjust the inclination angle of the seat cushion at a large angle, has high lateral strength, is applicable to zero-gravity seats, realizes the zero-gravity posture of the human body, ensures comfort, and thus can, to a certain extent, solve the problems that in the process of using the existing automobile seat inclination adjustment device, since the front-lifting mechanism usually includes two angle adjusters, the production cost of the entire adjustment device is increased, and at the same time, the synchronization on both sides often uses a spline rod for synchronization, resulting in relatively weak lateral strength of the seat frame;

[0015] 2. By setting a front-lifting structure to directly connect the left and right structures, and driving the front lower linkage to rotate through a front driving member, the front end of the seat cushion frame is raised or lowered, and the rear driving member drives the rear linkage to rotate, so that the rear end of the seat cushion frame is raised or lowered. When the front end of the seat cushion frame rises and the rear end descends simultaneously, the inclination angle of the seat cushion can be adjusted at a large angle, which is used for the attitude adjustment of the zero-gravity seat, thereby improving the convenience of use of the entire automobile seat cushion inclination adjustment mechanism to a certain extent, and further greatly improving the working efficiency of the entire automobile seat cushion inclination adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the design position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0017] Figure 2 Schematic diagram of the zero-gravity position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0018] Figure 3 First exploded view of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0019] Figure 4 Second exploded view of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0020] Figure 5 Cross-sectional view of the design position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0021] Figure 6 Cross-sectional view of the zero-gravity position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0022] Figure 7 Front view of the lowest position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0023] Figure 8 Cross-sectional view of the lowest position of the preferred example of the automobile seat cushion inclination adjustment mechanism of the present invention;

[0024] Figure 9 Front view of the highest position of the preferred example of the inclination angle adjustment mechanism of the car seat cushion of the present utility model;

[0025] Figure 10 Cross-sectional view of the highest position of the preferred example of the inclination angle adjustment mechanism of the car seat cushion of the present utility model;

[0026] Figure 11 Comparison diagram of the states of another example of the inclination angle adjustment mechanism of the car seat cushion of the present utility model.

[0027] Explanation of reference numerals: 1, seat cushion frame; 2, front upper linkage; 3, rear linkage; 4, front lower linkage; 5, front drive member; 6, rear drive member; 7, seat cushion base; 101, first connection point; 102, second connection point; 103, frame main body; 201, third connection point; 202, fourth connection point; 203, front upper linkage main body; 301, fifth connection point; 302, sixth connection point; 303, rear drive support; 401, seventh connection point; 402, eighth connection point; 403, ninth connection point; 404, front lower linkage main body; 501, tenth connection point; 502, front drive main body; 601, gear; 602, rear drive main body; 701, eleventh connection point; 702, twelfth connection point; 703, front stop point; 704, front drive support; 705, rear stop point; 706, toothed plate; 707, base main body. Detailed implementation manners

[0028] The present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please refer to Figure 1-2 , FIGS. 5-11, the present utility model provides an embodiment: an inclination angle adjustment mechanism of a car seat cushion for significantly adjusting the sitting posture, including a seat cushion frame 1, a front upper linkage 2, a rear linkage 3, a front lower linkage 4, a front drive member 5, a rear drive member 6 and a seat cushion base 7; a front upper linkage 2 is provided at one end of the seat cushion frame 1; a rear linkage 3 is provided at the other end of the seat cushion frame 1; a front lower linkage 4 is provided at the lower end of the front upper linkage 2; one end of the front lower linkage 4 is connected to one end of the seat cushion base 7; the lower end of the rear linkage 3 is connected to the other end of the seat cushion base 7; one end of the front drive member 5 is connected to the seat cushion base 7; the other end of the front drive member 5 is connected to the front lower linkage 4; the rear drive member 6 is provided on the rear linkage 3 and is simultaneously connected to the seat cushion base 7. The front drive member 5 can drive the front lower linkage 4 to rotate, and the rear drive member 6 can drive the rear linkage 3 to rotate.

[0030] Please refer to Figure 3-4, in this embodiment, an inclination adjustment mechanism for the seat cushion of an automobile seat with a large adjustment of sitting posture, characterized in that: the seat cushion frame 1 includes a first connection point 101, a second connection point 102 and a frame main body 103; the first connection point 101 and the second connection point 102 are arranged at both ends of the frame main body 103; the front upper linkage 2 includes a third connection point 201, a fourth connection point 202 and a front upper linkage main body 203; the third connection point 201 and the fourth connection point 202 are arranged at both ends of the front upper linkage main body 203. The first connection point 101 is rotatably connected to the third connection point 201; the rear linkage 3 includes a fifth connection point 301, a sixth connection point 302 and a rear drive support 303; the fifth connection point 301 and the sixth connection point 302 are arranged at both ends of the rear drive support 303. The second connection point 102 is rotatably connected to the fifth connection point 301; the front lower linkage 4 includes a seventh connection point 401, an eighth connection point 402, a ninth connection point 403 and a front lower linkage main body 404; the fourth connection point 202 is rotatably connected to the seventh connection point 401; the front drive member 5 includes a tenth connection point 501 and a front drive main body 502; the ninth connection point 403 is rotatably connected to the tenth connection point 501; the rear drive member 6 includes a gear 601 and a rear drive main body 602; the rear drive main body 602 is fixed on the rear drive support 303; the seat cushion base 7 includes an eleventh connection point 701, a twelfth connection point 702, a front stop point 703, a front drive support 704, a rear stop point 705, a toothed plate 706 and a base main body 707; the front drive main body 502 is fixed on the front drive support 704; the eleventh connection point 701 and the twelfth connection point 702 are arranged at both ends of the base main body 707; a front stop point 703 is arranged on one side of the eleventh connection point 701; a toothed plate 706 is arranged on one side of the twelfth connection point 702; a rear stop point 705 is arranged on one side of the toothed plate 706; the eleventh connection point 701 is rotatably connected to the eighth connection point 402; the twelfth connection point 702 is rotatably connected to the sixth connection point 302; the gear 601 meshes with the toothed plate 706; when working, the front lower linkage can be driven to rotate by the front drive member 5 to realize the raising or lowering of the front end of the seat cushion frame 1. When the front lower linkage 4 contacts the front stop point 703, the rear linkage 3 can be driven to rotate by the rear drive member 6 to realize the overall height adjustment of the seat cushion; when the rear linkage 3 contacts the rear stop point 705, the push rod on the front drive member 5 is the shortest, and at this time, the front end of the seat cushion frame 1 reaches the highest position, the rear end reaches the lowest position, and the seat cushion inclination reaches the zero-gravity attitude position.

[0031] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A seat cushion inclination adjustment mechanism for a car seat with a large adjustment of the sitting posture, comprising a seat cushion frame (1); characterized in that: The seat frame (1) further comprises a front upper linking member (2), a rear linking member (3), a front lower linking member (4), a front driving member (5), a rear driving member (6) and a cushion base (7); one end of the cushion frame (1) is provided with the front upper linking member (2); the other end of the cushion frame (1) is provided with the rear linking member (3); the lower end of the front upper linking member (2) is provided with the front lower linking member (4); one end of the front lower linking member (4) is connected to one end of the cushion base (7); the lower end of the rear linking member (3) is connected to the other end of the cushion base (7); one end of the front driving member (5) is connected to the cushion base (7); the other end of the front driving member (5) is connected to the front lower linking member (4); the rear driving member (6) is provided on the rear linking member (3) and is connected to the cushion base (7); the front driving member (5) can drive the front lower linking member (4) to rotate, and the rear driving member (6) can drive the rear linking member (3) to rotate.

2. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 1, characterized in that: The cushion frame (1) comprises a first connection point (101), a second connection point (102) and a frame body (103); the first connection point (101) and the second connection point (102) are arranged at two ends of the frame body (103); the front upper linking member (2) comprises a third connection point (201), a fourth connection point (202) and a front upper linking member body (203); the third connection point (201) and the fourth connection point (202) are arranged at two ends of the front upper linking member body (203); the first connection point (101) and the third connection point (201) are rotatably connected.

3. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 2, characterized in that: The rear connecting member (3) comprises a fifth connecting point (301), a sixth connecting point (302) and a rear driving support (303); the fifth connecting point (301) and the sixth connecting point (302) are arranged at two ends of the rear driving support (303); and the second connecting point (102) is rotatably connected to the fifth connecting point (301).

4. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 2, characterized in that: The front lower linking member (4) comprises a seventh connection point (401), an eighth connection point (402), a ninth connection point (403) and a front lower linking member body (404); the fourth connection point (202) is rotatably connected to the seventh connection point (401).

5. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 4, characterized in that: The front driving member (5) comprises a tenth connection point (501) and a front driving body (502); The ninth connection point (403) is rotatably connected to the tenth connection point (501).

6. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 3, characterized in that: The rear driving member (6) comprises a gear (601) and a rear driving body (602); the rear driving body (602) is fixed on the rear driving support (303).

7. The seat cushion inclination adjustment mechanism for a car seat capable of greatly adjusting the sitting posture according to claim 5, characterized in that: The seat cushion base (7) comprises an eleventh connection point (701), a twelfth connection point (702), a front stop point (703), a front drive support (704), a rear stop point (705), a tooth plate (706) and a base body (707); the front drive body (502) is fixed on the front drive support (704); the eleventh connection point (701) and the twelfth connection point (702) are arranged at both ends of the base body (707); the front stop point (703) is arranged on one side of the eleventh connection point (701); the tooth plate (706) is arranged on one side of the twelfth connection point (702); the rear stop point (705) is arranged on one side of the tooth plate (706); the eleventh connection point (701) is rotatably connected to the eighth connection point (402); the twelfth connection point (702) is rotatably connected to the sixth connection point (302); the gear (601) is meshed with the tooth plate (706).

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