Cushion adjusting mechanism of vehicle seat

Abstract

The utility model discloses a seat cushion adjusting mechanism of a vehicle seat, which comprises a seat frame skeleton and a slide rail assembly, the seat frame skeleton is arranged above the slide rail assembly through a connecting rod assembly, a first driving assembly is arranged between the connecting rod assembly and the slide rail assembly, and the first driving assembly drives the connecting rod assembly to realize zero-gravity adjustment of the seat. A second driving assembly is arranged between the seat frame skeleton and the connecting rod assembly, and the second driving assembly drives the connecting rod to realize height adjustment of the seat. Through the arrangement of the connecting rod assembly, the first driving assembly and the second driving assembly, zero-gravity adjustment and height adjustment of the cushion can be achieved; adjustment is achieved by pushing the seat cushion, the overall strength is good, and the seat cushion is not prone to damage when impacted in the initial state. The first driving assembly is arranged at the lower end, the lower space of the seat is utilized, and the height of the seat is reduced; an external zero-gravity adjusting structure is beneficial to the stability of the seat structure and the design of the seat basin structure, and the width size of the seat can be optimized as well.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seats, and in particular relates to a cushion adjustment mechanism for a vehicle seat. Background Art

[0002] With the continuous development of the automotive industry and the continuous improvement of intelligence, consumers' requirements for the comfort of car seats are also increasing, and zero-gravity seats are also emerging. The goal of "zero-gravity" posture seat adjustment is to meet the support requirements of the three main parts of the occupants' feet, thighs and torso, so that the three parts are fully and appropriately supported, dispersing the pressure on the back and legs, and making the muscles of the whole body in a state of relaxation, so as to achieve the ultimate relaxation state of the occupants.

[0003] Chinese patent CN112977187A discloses a zero-gravity car seat, and discloses that the height adjustment and rotation adjustment of the seat cushion assembly are achieved through a pivoted seat cushion wall panel assembly, a rear cross tube assembly, a slide rail assembly, a front connecting rod assembly and a zero-gravity adjustment connecting rod assembly, thereby achieving zero-gravity adjustment of the car seat. However, in this structure, when zero-gravity adjustment is achieved, the seat cushion is pulled by a zero-gravity adjustment motor to achieve zero gravity, so that in the initial state, the front and rear installation points of the zero-gravity adjustment motor are in the longest state. When the seat is impacted, the zero-gravity adjustment motor is easily damaged, the seat stability is insufficient, and the overall structural strength is not high. Utility Model Content

[0004] The utility model proposes a seat cushion adjustment mechanism for a vehicle seat, which has high overall strength and good stability when realizing zero-gravity adjustment and height adjustment of the seat, and is not easily damaged when the seat is impacted.

[0005] To this end, the technical solution adopted by the utility model is: a seat cushion adjustment mechanism for a vehicle seat, comprising a seat frame frame and a slide rail assembly, the seat frame frame is arranged above the slide rail assembly through a connecting rod assembly, a first drive assembly is arranged between the connecting rod assembly and the slide rail assembly, the first drive assembly drives the connecting rod assembly to achieve zero gravity adjustment of the seat, a second drive assembly is arranged between the seat frame frame and the connecting rod assembly, the second drive assembly drives the connecting rod assembly to achieve height adjustment of the seat.

[0006] As a preferred embodiment of the above scheme, the connecting rod assembly includes a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly, a connecting rod front fixing piece and a connecting rod rear fixing piece, the connecting rod front fixing piece and the connecting rod rear fixing piece are arranged on the slide rail assembly at a front-rear interval, one end of the first connecting rod assembly is hinged to the front end of the seat frame frame, and the other end is hinged to the second connecting rod assembly, the other end of the second connecting rod assembly is hinged to the connecting rod front fixing piece, one end of the third connecting rod assembly is hinged to the rear end of the seat frame frame, and the other end is hinged to the connecting rod rear fixing piece;

[0007] One end of the first drive assembly is hinged on the connecting rod rear fixing piece, and the other end of the first drive assembly is hinged on the second connecting rod assembly; one end of the second drive assembly is hinged on the third connecting rod assembly, and the other end of the second drive assembly is hinged on the front end of the seat frame frame.

[0008] Further preferably, the seat frame frame, the first connecting rod assembly, the second connecting rod assembly, the third connecting rod assembly and the first driving assembly form a zero gravity adjustment structure, and the first connecting rod assembly is arranged on the left and right outer sides of the seat frame frame, so that the zero gravity adjustment structure is an external zero gravity adjustment structure. Not only can the first driving assembly be arranged closer to the front connecting rod fixing member, it can reduce the cantilever between the first driving assembly and the center of each side slide rail, thereby improving the force of the first driving assembly and increasing the stability of the structure, but also make room so that the front end of the seat frame frame can be retracted inward, thereby facilitating the design of the front end of the seat basin, thereby reducing the lateral size of the seat cushion and facilitating the arrangement of the entire seat.

[0009] Further preferably, the first link assembly includes two first links spaced apart on the left and right, the second link assembly includes a left second link and a right second link spaced apart on the left and right, and the left second link and the right second link are provided with a front link tube extending left and right, and the first drive assembly is hinged on the left second link; the third link assembly includes a rear link tube extending left and right and hinged at the rear end of the seat frame skeleton, and a left third link and a right third link are spaced apart on the rear link tube, and the second drive assembly is hinged on the right third link.

[0010] It is further preferred that the front linkage tube is arranged at the hinge point between the first link assembly and the second link assembly, or at the hinge point between the second link assembly and the front fixing piece of the link. When the front linkage tube is located at the hinge point between the first link assembly and the second link assembly, the space between the front linkage tube and the anti-submarine tube can be increased, which is convenient for the arrangement of the leg support mechanism. At this time, threads can be directly arranged on the front linkage tube, so that the threaded fasteners connecting the first link assembly and the second link assembly can be reduced, which is beneficial to the lightweight design of the seat; when the front linkage tube is located at the hinge point between the second link assembly and the front fixing piece of the link, the linkage tube is only subjected to torque but not bending moment, which increases the structural strength and stability of the seat.

[0011] Further preferably, the first drive assembly and the second drive assembly both use a motor screw assembly or a linear guide assembly. When the first drive assembly uses a motor screw assembly, and zero gravity and height adjustment are not performed, the front and rear mounting points of the first drive assembly are in the shortest state, and when the vehicle collides, the motor is stably stressed and the seat is better stressed as a whole; during zero gravity adjustment, the first drive assembly can push the connecting rod assembly to achieve zero gravity adjustment.

[0012] Further preferably, the hinge point between the first drive assembly and the second connecting rod assembly is located below the hinge point between the second connecting rod assembly and the connecting rod front fixing piece, so that the first drive assembly is arranged closer to the lower end, which can effectively utilize the lower end space and facilitate reducing the height of the seat cushion.

[0013] Further preferably, when zero gravity adjustment and height adjustment are not performed, the angle formed between the first link assembly and the second link assembly is arranged to protrude forward, which is beneficial for the link to bear the force when the seat is impacted forward, thereby enhancing the impact stability of the seat.

[0014] Further preferably, the seat frame skeleton includes seat frame side panels spaced apart on the left and right and anti-submarine tubes disposed at the front ends of the two seat frame side panels.

[0015] The beneficial effects of the present utility model: through the arrangement of the connecting rod assembly, the first drive assembly and the second drive assembly, the seat cushion of the present application can achieve zero-gravity adjustment and height adjustment; in the present application, the adjustment is achieved by pushing the seat cushion, the overall strength is good, and it is not easy to be damaged when impacted in the initial state; the first drive assembly is arranged at the lower end, utilizing the space under the seat and reducing the height of the seat; the external zero-gravity adjustment structure is beneficial to the stability of the seat structure and the design of the seat basin structure, and can also optimize the width of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the utility model.

[0017] Figure 2 For the utility model Figure 1 .

[0018] Figure 3 for Figure 2 Side view of.

[0019] Figure 4 for Figure 2 A schematic diagram of the structure.

[0020] Figure 5 This is a schematic diagram of the utility model being deployed in zero gravity. Figure 1 .

[0021] Figure 6 This is a schematic diagram of the utility model being deployed in zero gravity. Figure 2 .

[0022] Figure 7 for Figure 5 Side view of.

[0023] Figure 8 for Figure 5 A schematic diagram of the structure.

[0024] Fig. 9 This is a schematic diagram of the utility model in high-profile deployment Figure 1 .

[0025] Fig.10 This is a schematic diagram of the utility model in high-profile deployment Figure 2 .

[0026] Fig.11 for Fig. 9 Side view of.

[0027] Fig.12 for Fig. 9 A schematic diagram of the structure.

[0028] Fig.13 For the utility model Figure 2 (The front link tube is arranged at the hinge point between the second link assembly and the front fixing member of the link).

[0029] Fig.14 This is a schematic diagram of the utility model installed on a seat frame.

[0030] Figure markings: seat frame frame -100, seat frame side panel -110, anti-submarine tube -120, slide rail assembly -200, connecting rod assembly -300, first connecting rod assembly -310, first connecting rod -311, second connecting rod assembly -320, front connecting rod tube -321, left second connecting rod -322, right second connecting rod -323, third connecting rod assembly -330, rear connecting rod tube -331, left third connecting rod -332, right third connecting rod -333, connecting rod front fixing piece -340, connecting rod rear fixing piece -350, first driving assembly -400, second driving assembly -500. DETAILED DESCRIPTION

[0031] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0032] like Figure 1-Figure 14 As shown, a seat cushion adjustment mechanism for a vehicle seat is mainly composed of a seat frame 100, a slide rail assembly 200, a connecting rod assembly 300, a first driving assembly 400 and a second driving assembly 500. The structure of the slide rail assembly 200 is the prior art. To facilitate the arrangement of the connecting rod assembly, the seat frame 100 includes seat frame side panels 110 arranged at intervals on the left and right and anti-submarine pipes 120 arranged at the front ends of the two seat frame side panels 110.

[0033] The seat frame frame 100 is arranged above the slide rail assembly 200 through the connecting rod assembly 300. A first driving assembly 400 is arranged between the connecting rod assembly 300 and the slide rail assembly 200. The first driving assembly 400 drives the connecting rod assembly 300 to achieve zero gravity adjustment of the seat. A second driving assembly 500 is arranged between the seat frame frame 100 and the connecting rod assembly 300. The second driving assembly 500 drives the connecting rod assembly 300 to achieve height adjustment of the seat.

[0034] The specific structure of the connecting rod assembly 300 includes a first connecting rod assembly 310, a second connecting rod assembly 320, a third connecting rod assembly 330, a connecting rod front fixing member 340 and a connecting rod rear fixing member 350, and the connecting rod front fixing member 340 and the connecting rod rear fixing member 350 are arranged on the slide rail assembly 200 at intervals in front and back. One end of the first connecting rod assembly 310 is hinged to the front end of the seat frame frame 100, and the other end is hinged to the second connecting rod assembly 320. The other end of the second connecting rod assembly 320 is hinged to the connecting rod front fixing member 340. One end of the third connecting rod assembly 330 is hinged to the rear end of the seat frame frame 100, and the other end is hinged to the connecting rod rear fixing member 350.

[0035] One end of the first driving assembly 400 is hinged to the connecting rod rear fixing member 350, and the other end of the first driving assembly 400 is hinged to the second connecting rod assembly 320. One end of the second driving assembly 500 is hinged to the third connecting rod assembly 330, and the other end of the second driving assembly 500 is hinged to the seat frame 100.

[0036] When the first drive assembly is working, it can drive the second connecting rod assembly to rotate around the hinge point between the second connecting rod assembly and the front fixing piece of the connecting rod. Since the second drive assembly is locked and the third connecting rod assembly is hinged to the rear fixing piece of the connecting rod, the front end of the entire seat cushion is lifted upward and the rear end is downward through the first connecting rod assembly, the second connecting rod assembly, the seat frame skeleton and the third connecting rod assembly, thereby realizing zero gravity adjustment of the seat.

[0037] When the second driving assembly is working, it drives the third connecting rod assembly to rotate around the hinge point between the third connecting rod assembly and the connecting rod rear fixing piece. Since the first driving assembly is locked, the height of the entire seat cushion can be adjusted by rotating the third connecting rod assembly, the seat frame frame and the first connecting rod assembly.

[0038] The seat frame frame 100, the first connecting rod assembly 310, the second connecting rod assembly 320, the third connecting rod assembly 330 and the first driving assembly 400 form a zero gravity adjustment structure, wherein the first connecting rod assembly 310 is arranged on the left and right outer sides of the seat frame frame, so that the zero gravity adjustment structure is an external zero gravity adjustment structure. The external zero gravity adjustment structure not only makes the first driving assembly closer to the front connecting rod fixing member, but also reduces the cantilever between the first driving assembly and the center of each side slide rail, thereby improving the force of the first driving assembly and increasing the stability of the structure, and also makes room so that the front end of the seat frame frame can be retracted inward, thereby facilitating the design of the front end of the seat basin, thereby reducing the lateral size of the seat cushion and facilitating the arrangement of the entire seat.

[0039] The first link assembly 310 includes two identical first links 311 spaced apart from each other. The second link assembly 320 includes a left second link 322 and a right second link 323 spaced apart from each other from each other, and the left second link 322 and the right second link 323 are provided with a front link tube 321 extending from each other from each other, and the first drive assembly 400 is hinged on the left second link 323. The third link assembly 330 includes a rear link tube 331 extending from each other from each other and hinged on the rear end of the seat frame frame 100, and a left third link 332 and a right third link 333 are spaced apart from each other ...

[0040] The front linkage tube 321 can be arranged at the hinge point between the first link assembly 310 and the second link assembly 320, or at the hinge point between the second link assembly 320 and the link front fixing piece 340. When the front linkage tube is located at the hinge point between the first link assembly and the second link assembly, the space between the front linkage tube and the anti-submarine tube can be increased, which is convenient for the arrangement of the leg support mechanism. At this time, threads can be directly arranged on the front linkage tube, so that the number of threaded fasteners connecting the first link assembly and the second link assembly can be reduced, which is beneficial to the lightweight design of the seat; when the front linkage tube is located at the hinge point between the second link assembly and the link front fixing piece, the linkage tube is only subjected to torque but not bending moment, which increases the structural strength and stability of the seat.

[0041] The first drive assembly 400 and the second drive assembly 500 both use a motor screw assembly or a linear guide assembly. Of course, other linear drive elements in the prior art can also be selected as needed. When the first drive assembly uses a motor screw assembly and zero gravity and height adjustment are not performed, the front and rear mounting points of the first drive assembly 400 are in the shortest state, and the screw is not exposed. When the vehicle collides, the motor is stably stressed and the seat is better stressed as a whole; when zero gravity adjustment is performed, the first drive assembly can push the connecting rod assembly 300 to achieve zero gravity adjustment.

[0042] The hinge point between the first drive assembly 400 and the second connecting rod assembly 320 is located below the hinge point between the second connecting rod assembly 320 and the connecting rod front fixing member 340, so that the first drive assembly is arranged closer to the lower end, which can effectively utilize the lower end space and facilitate reducing the height of the seat cushion.

[0043] When zero gravity adjustment and height adjustment are not performed, the angle formed between the first link assembly 310 and the second link assembly 320 is arranged to protrude forward, which is beneficial for the link to bear the force when the seat is impacted forward, thereby enhancing the impact stability of the seat.

Claims

1. A seat cushion adjustment mechanism for a vehicle seat, comprising a seat frame (100) and a slide rail assembly (200), characterized in that: The seat frame skeleton (100) is arranged above the slide rail assembly (200) via a connecting rod assembly (300); a first driving assembly (400) is arranged between the connecting rod assembly (300) and the slide rail assembly (200); the first driving assembly (400) drives the connecting rod assembly (300) to achieve zero-gravity adjustment of the seat; a second driving assembly (500) is arranged between the seat frame skeleton (100) and the connecting rod assembly (300); the second driving assembly (500) drives the connecting rod assembly (300) to achieve height adjustment of the seat.

2. The seat cushion adjustment mechanism for a vehicle seat according to claim 1, characterized in that: The connecting rod assembly (300) comprises a first connecting rod assembly (310), a second connecting rod assembly (320), a third connecting rod assembly (330), a connecting rod front fixing piece (340) and a connecting rod rear fixing piece (350); the connecting rod front fixing piece (340) and the connecting rod rear fixing piece (350) are arranged on the slide rail assembly (200) at a front-to-back interval; one end of the first connecting rod assembly (310) is hinged to the front end of the seat frame frame (100), and the other end is hinged to the second connecting rod assembly (320); the other end of the second connecting rod assembly (320) is hinged to the connecting rod front fixing piece (340); one end of the third connecting rod assembly (330) is hinged to the rear end of the seat frame frame (100), and the other end is hinged to the connecting rod rear fixing piece (350); One end of the first driving assembly (400) is hinged to the connecting rod rear fixing member (350), and the other end of the first driving assembly (400) is hinged to the second connecting rod assembly (320); one end of the second driving assembly (500) is hinged to the third connecting rod assembly (330), and the other end of the second driving assembly (500) is hinged to the front end of the seat frame skeleton (100).

3. The seat cushion adjustment mechanism for a vehicle seat according to claim 2, characterized in that: The seat frame frame (100), the first connecting rod assembly (310), the second connecting rod assembly (320), the third connecting rod assembly (330) and the first driving assembly (400) form a zero gravity adjustment structure, wherein the first connecting rod assembly (310) is arranged on the left and right outer sides of the seat frame frame, so that the zero gravity adjustment structure is an external zero gravity adjustment structure.

4. The seat cushion adjustment mechanism for a vehicle seat according to claim 2, characterized in that: The first link assembly (310) comprises two first links (311) arranged at intervals on the left and right; the second link assembly (320) comprises a left second link (322) and a right second link (323) arranged at intervals on the left and right, and the left second link (322) and the right second link (323) are provided with a front link tube (321) extending left and right; the first drive assembly (400) is hinged on the left second link (322); the third link assembly (330) comprises a rear link tube (331) extending left and right and hinged on the rear end of the seat frame (100); a left third link (332) and a right third link (333) are arranged on the rear link tube (331) at intervals on the left and right; the second drive assembly (500) is hinged on the right third link (333).

5. The seat cushion adjustment mechanism for a vehicle seat according to claim 4, characterized in that: The front link tube (321) is arranged at a hinge point between the first link assembly (310) and the second link assembly (320), or at a hinge point between the second link assembly (320) and the link front fixing member (340).

6. The seat cushion adjustment mechanism for a vehicle seat according to claim 1, characterized in that: The first drive assembly (400) and the second drive assembly (500) both use a motor screw assembly or a linear guide assembly; When the first drive assembly (400) uses a motor screw assembly, and zero gravity and height adjustment are not performed, the front and rear mounting points of the first drive assembly (400) are in the shortest state, and during zero gravity adjustment, the first drive assembly can push the connecting rod assembly (300) to achieve zero gravity adjustment.

7. The seat cushion adjustment mechanism for a vehicle seat according to claim 2, characterized in that: The hinge point between the first driving assembly (400) and the second connecting rod assembly (320) is located below the hinge point between the second connecting rod assembly (320) and the connecting rod front fixing member (340).

8. The seat cushion adjustment mechanism for a vehicle seat according to claim 2, characterized in that: When zero gravity adjustment and height adjustment are not performed, the angle formed between the first connecting rod assembly (310) and the second connecting rod assembly (320) is arranged to protrude forward.

9. The seat cushion adjustment mechanism for a vehicle seat according to claim 1, characterized in that: The seat frame frame (100) comprises seat frame side plates (110) arranged at intervals on the left and right, and an anti-submarine pipe (120) arranged at the front ends of the two seat frame side plates (110).

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