Zero gravity and height adjusting mechanism for automobile seat cushion

Abstract

The utility model discloses a zero gravity and height adjustment mechanism for an automobile seat cushion, 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, a sliding chute for zero gravity adjustment is arranged in the connecting rod assembly, and a second driving assembly is arranged in the sliding chute. A first driving assembly is arranged between the seat frame framework and the connecting rod assembly, the first driving assembly drives the connecting rod assembly to achieve zero-gravity adjustment of the seat, a second driving assembly is arranged between the seat frame framework and the connecting rod assembly, the second driving assembly drives the connecting rod assembly to achieve height adjustment of the seat, and the first driving assembly and the second driving assembly are arranged on the left side and the right side in the seat frame framework respectively. Zero-gravity adjustment can be achieved, the height of the seat cushion can be adjusted, and by reasonably arranging all the parts, arrangement of the leg supports, the sliding rail assemblies and other parts is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seats, and in particular relates to a zero-gravity and high-profile mechanism for an automobile seat cushion. 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 CN115384362A discloses a zero gravity adjustment mechanism for a car seat, and discloses a slide rail, a telescopic part connected to the slide rail, a front connecting rod connected to the telescopic part, a seat frame side plate connected to the front connecting rod, a high-adjustment part connected to the seat frame side plate, and a rear connecting rod connecting the high-adjustment part and the slide rail, wherein the telescopic part drives the front connecting rod to move to adjust the seat frame angle, and the high-adjustment part drives the rear connecting rod to move to adjust the seat frame height; the telescopic part includes a connecting bracket connected to the slide rail, a slide plate with a slide groove arranged on the slide rail for guiding the reciprocating motion of the front connecting rod, a telescopic motor arranged on the connecting bracket, and a front cross tube connecting the telescopic motor and the front connecting rod. The structure can realize the adjustment of the seat cushion height and angle, and adjust the backrest at the same time, so that the passenger can reach a zero gravity posture, significantly improve the comfort, and the structure is relatively simple, with few hinge points, high structural stability, and can quickly respond to the adjustment movement. However, in this structure, the telescopic motor is arranged in the middle part below the seat frame, which is not conducive to the arrangement of the slide rail assembly and the leg support assembly. Since the front connecting rod is fixed on the front cross tube, the telescopic motor needs to rotate when the seat is in a high position. Therefore, when designing the seat, more space needs to be reserved under the seat to avoid the telescopic motor. In addition, a large number of telescopic motor brackets are arranged, which is not conducive to the lightweight design of the seat. Utility Model Content

[0004] The utility model proposes a zero-gravity and height-adjusting mechanism for a car seat cushion. When realizing zero-gravity adjustment and height adjustment of the cushion, the positions of various components are reasonably arranged to facilitate the arrangement of other components.

[0005] To this end, the technical solution adopted by the utility model is: a zero gravity and high-adjustment mechanism for a car seat cushion, including 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 driving assembly is arranged between the connecting rod assembly and the slide rail assembly, a slide groove for zero gravity adjustment is arranged in the connecting rod assembly, the first driving assembly drives the connecting rod assembly to achieve zero gravity adjustment of the seat, a second driving assembly is arranged between the seat frame frame and the connecting rod assembly, the second driving assembly drives the connecting rod assembly to achieve height adjustment of the seat, and the first driving assembly and the second driving assembly are respectively arranged on the left and right sides of the seat frame frame.

[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 connecting rod connecting 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, and two connecting rod front fixing pieces and two connecting rod rear fixing pieces are arranged opposite to each other on the left and right, one end of the first connecting rod assembly is hinged to the front end of the seat frame frame, the other end of the first connecting rod assembly is arranged on the connecting rod connecting assembly, each connecting rod front fixing piece is provided with a sliding groove, one end of the second 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, the other end of the first drive assembly is hinged on the connecting rod connecting assembly, one end of the second drive assembly is hinged on the second connecting rod assembly, and the other end of the second drive assembly is hinged on the seat frame frame. The first drive assembly and the second drive assembly are respectively arranged on the left and right sides of the seat frame frame.

[0008] Further preferably, the other end of the first connecting rod assembly is hinged on the connecting rod connecting assembly.

[0009] Further preferably, the first connecting rod assembly includes two first connecting rods arranged at intervals on the left and right, the connecting rod connecting assembly includes a front connecting tube for installing the two first connecting rods, the left and right ends of the front connecting tube are arranged on the connecting rod front fixing parts on the corresponding sides through corresponding mounting parts, and the mounting parts can slide in the slide groove, and a first driving bracket for hingedly connecting the first driving assembly is fixedly arranged at a position close to the left side on the front connecting tube; the second connecting rod assembly includes a rear connecting tube extending left and right and hinged at the rear end of the seat frame skeleton, a left second connecting rod and a right second connecting rod are arranged on the rear connecting tube at intervals on the left and right, and the second driving assembly is hinged on the right second connecting rod.

[0010] Further preferably, the slide groove is configured as a horizontal straight slide groove, and the mounting member is configured as a special-shaped step bolt that passes through the slide groove from the outside and is fixed on the front linkage tube.

[0011] It is further preferred that the upper end of the first connecting rod assembly is correspondingly hinged on the left and right outer sides of the seat frame skeleton, so that the first drive assembly and the first drive bracket are arranged closer to the slide rail, reducing the distance between the connection point of the first drive assembly and the slide rail, thereby reducing the bending moment of the first drive assembly and the first drive bracket, which is beneficial to the force stability of the seat structure. At the same time, the front end structure of the seat frame side panels on both sides can be retracted to reduce the front end width of the seat, which is beneficial to the layout and the design of the seat basin structure; or the upper end of the first connecting rod assembly is correspondingly hinged on the left and right inner sides of the seat frame skeleton, which is convenient for the cooperation of the connecting rod connecting assembly and the connecting rod front fixing assembly, and the hinge position of the first connecting rod assembly and the seat frame skeleton is selected according to needs to make it more in line with functional requirements.

[0012] Further preferably, the first drive assembly and the second drive assembly both adopt a motor screw assembly or a linear guide assembly.

[0013] Further preferably, the seat frame skeleton includes seat frame side panels spaced apart on the left and right sides and a front cross tube disposed at the front ends of the two seat frame side panels.

[0014] 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 first drive assembly and the second drive assembly are respectively arranged on the left and right sides of the inner side of the seat frame skeleton, leaving the middle position for facilitating the arrangement of the slide rail motor and other components of the leg support; the first connecting rod and the front link tube are connected in a hinged manner, so that when the seat is in high adjustment, the front link tube will not rotate, and correspondingly the first drive assembly will not rotate, thereby reducing the space occupied by the first drive assembly during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the utility model.

[0016] Figure 2 It is a side view of the utility model.

[0017] Figure 3 for Figure 2 A schematic diagram of the structure.

[0018] Figure 4 It is a side view of the utility model when it is deployed in zero gravity.

[0019] Figure 5 for Figure 4 A schematic diagram of the structure.

[0020] Figure 6 It is a side view of the utility model when it is in high-profile deployment.

[0021] Figure 7 for Figure 6 A schematic diagram of the structure.

[0022] Figure 8 This is a schematic diagram of the utility model when the first connecting rod assembly is arranged on the left and right outer sides of the seat frame frame.

[0023] Fig. 9 This is a schematic diagram of the utility model installed on a seat frame.

[0024] Fig.10 This is a schematic diagram of the utility model installed on a seat frame when it is deployed in zero gravity.

[0025] Fig.11 It is a schematic diagram of the mounting member and the slide groove in the utility model.

[0026] Figure markings: slide groove-a, seat frame frame-100, seat frame side panel-110, front cross tube-120, slide rail assembly-200, connecting rod assembly-300, first connecting rod assembly-310, first connecting rod-311, left second connecting rod-322, right second connecting rod-323, second connecting rod assembly-320, rear linkage tube-321, left second connecting rod-322, right second connecting rod-323, connecting rod front fixing part-330, connecting rod rear fixing part-340, connecting rod connecting assembly-350, front linkage tube-351, mounting part-352, first drive bracket-353, first drive assembly-400, second drive assembly-500. DETAILED DESCRIPTION

[0027] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0028] like Figure 1-Figure 10 As shown, a zero gravity and high-profile mechanism for a car seat cushion is mainly composed of a seat frame 100, a slide rail assembly 200, a connecting rod assembly 300, a first drive assembly 400 and a second drive 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 a front cross tube 120 arranged at the front ends of the two seat frame side panels 110.

[0029] 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. At the same time, a slide groove a for zero gravity adjustment is arranged in the connecting rod assembly 300. 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. In order to facilitate the use of the seat space, the first driving assembly and the second driving assembly are respectively arranged on the left and right sides of the seat frame frame.

[0030] The specific structure of the connecting rod assembly 300 includes a first connecting rod assembly 310, a second connecting rod assembly 320, a connecting rod connecting assembly 350, a connecting rod front fixing member 330 and a connecting rod rear fixing member 340. The connecting rod front fixing member 330 and the connecting rod rear fixing member 340 are arranged on the slide rail assembly 200 at intervals in front and back, and two connecting rod front fixing members 330 and two connecting rod rear fixing members 340 are arranged opposite to each other on the left and right. 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 arranged on the connecting rod connecting assembly 350, and each connecting rod front fixing member 330 is provided with a slide groove a. One end of the second connecting rod assembly 320 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 340.

[0031] One end of the first drive assembly 400 is hinged on the connecting rod rear fixing member 340, and the other end of the first drive assembly 400 is hinged on the first connecting rod assembly. One end of the second drive assembly 500 is hinged on the second connecting rod assembly 320, and the other end of the second drive assembly 500 is hinged on the front end of the seat frame frame 100. The first drive assembly and the second drive assembly are respectively arranged on the left and right sides of the seat frame frame.

[0032] When the first drive assembly is working, it can drive the connecting rod assembly to move backward along the slide slot. Since the second drive assembly is locked, the front end of the entire seat cushion is lifted upward and the rear end is downward through the connecting rod assembly, the first connecting rod assembly, the seat frame frame and the second connecting rod assembly, thereby realizing zero gravity adjustment of the seat. Since the other end of the first connecting rod assembly 310 is hinged on the connecting rod assembly 350, when the seat is in high adjustment, the first connecting rod assembly rotates, while the connecting rod assembly 350 does not rotate, so the corresponding first drive assembly does not rotate, which can reduce the space occupied by the first drive assembly when working, thereby facilitating the arrangement of other parts of the leg support.

[0033] When the second driving assembly is working, it drives the second connecting rod assembly to rotate around the hinge point between the second connecting rod assembly and the rear fixing piece of the connecting rod. Since the first driving assembly is locked, the second connecting rod assembly, the seat frame skeleton and the first connecting rod assembly form a quadrilateral mechanism. Therefore, by driving the second connecting rod assembly to rotate, the height adjustment of the entire seat cushion can be achieved.

[0034] The first link assembly 310 includes two identical first links 311 arranged at intervals on the left and right. The link connection assembly 350 includes a front link tube 351 for mounting the two first links 311, the left and right ends of the front link tube 351 are arranged on the link front fixing member 330 on the corresponding side through corresponding mounting members 352, and the mounting members 352 can slide in the slide groove a, and a first driving bracket 353 for the first driving assembly 400 to be hinged is fixedly arranged at a position close to the left side on the front link tube 351. The second link assembly 320 includes a rear link tube 321 extending left and right and hinged to the rear end of the seat frame frame 100, and a left second link 322 and a right second link 323 are arranged at intervals on the rear link tube 321, and the second driving assembly 500 is hinged to the right second link 323, and the other end of the second driving assembly is hinged to the seat frame frame 100.

[0035] The slide groove is set as a horizontal straight slide groove, and the mounting member 352 is set as a special-shaped step bolt that passes through the slide groove from the outside and is fixed on the front linkage tube 351. Preferably, the cross section of the mounting member and the slide groove is set as a waist shape, such as Fig.11 As shown, the waist shape is composed of arc segments at both ends and straight line segments for connecting the arc segments at both ends. The setting of the waist-shaped stage of the mounting part can increase the force-bearing surface, thereby ensuring the stability of the overall movement.

[0036] The upper end of the first connecting rod assembly 310 can be hinged on the left and right outer sides of the seat frame frame 100 or on the left and right inner sides of the seat frame frame 100 as required. When hinged on the left and right outer sides of the seat frame frame 100, the first drive assembly and the first drive bracket are arranged closer to the slide rail, reducing the distance between the connection point of the first drive assembly and the slide rail, thereby reducing the bending moment of the first drive assembly and the first drive bracket, which is beneficial to the force stability of the seat structure. At the same time, the front end structure of the seat frame side panels on both sides can be retracted to reduce the width of the front end of the seat, which is beneficial to the layout and the design of the seat basin structure. When hinged on the left and right inner sides of the seat frame frame 100, it is convenient for the connecting rod connection assembly to cooperate with the connecting rod front fixing assembly, and the hinge position of the first connecting rod assembly and the seat frame frame can be selected as required.

[0037] In the present application, the first drive assembly 400 and the second drive assembly 500 use a motor screw assembly or a linear guide assembly, and of course other linear drive mechanisms can also be used.

Claims

1. A zero gravity and high-profile mechanism for a car seat cushion, comprising a seat frame (100) and a slide rail assembly (200), characterized in that: The seat frame frame (100) is arranged above the slide rail assembly (200) through a connecting rod assembly (300); a first driving assembly (400) is arranged between the connecting rod assembly (300) and the slide rail assembly (200); a slide groove (a) for zero gravity adjustment is arranged in the connecting rod assembly (300); 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; the first driving assembly and the second driving assembly are respectively arranged on the left and right sides of the seat frame frame.

2. The zero gravity and high profile mechanism for a car seat cushion 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 connecting rod connecting assembly (350), a connecting rod front fixing member (330) and a connecting rod rear fixing member (340), wherein the connecting rod front fixing member (330) and the connecting rod rear fixing member (340) are arranged on the slide rail assembly (200) at a front-to-back interval, and two connecting rod front fixing members (330) and two connecting rod rear fixing members (340) are arranged opposite to each other on the left and right sides, 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 of the first connecting rod assembly (310) is arranged on the connecting rod connecting assembly (350), and each connecting rod front fixing member (330) is provided with a sliding groove (a), and one end of the second connecting rod assembly (320) 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 (340); One end of the first drive assembly (400) is hinged to the connecting rod rear fixing member (340), and the other end of the first drive assembly (400) is hinged to the connecting rod connecting assembly (350). One end of the second drive assembly (500) is hinged to the second connecting rod assembly (320), and the other end of the second drive assembly (500) is hinged to the seat frame frame (100).

3. The zero gravity and high profile mechanism for a car seat cushion according to claim 2, characterized in that: The other end of the first connecting rod assembly (310) is hinged on the connecting rod connection assembly (350).

4. The zero gravity and high profile mechanism for a car seat cushion according to claim 2, characterized in that: The first connecting rod assembly (310) comprises two first connecting rods (311) arranged at intervals on the left and right sides; the connecting rod connection assembly (350) comprises a front connecting rod (351) for mounting the two first connecting rods (311); the left and right ends of the front connecting rod (351) are arranged on the connecting rod front fixing member (330) on the corresponding side through corresponding mounting members (352); and the mounting members (352) can slide in the slide groove (a); a first driving bracket (353) for hingedly connecting the first driving assembly (400) is fixedly arranged at a position close to the left side on the front connecting rod (351); the second connecting rod assembly (320) comprises a rear connecting rod (321) extending left and right and hingedly connected to the rear end of the seat frame frame (100); a left second connecting rod (322) and a right second connecting rod (323) are arranged on the rear connecting rod (321) at intervals on the left and right sides; and the second driving assembly (500) is hingedly connected to the right second connecting rod (323).

5. The zero gravity and high profile mechanism for a car seat cushion according to claim 4, characterized in that: The slide groove is configured as a horizontal straight slide groove, and the mounting member (352) is configured as a special-shaped step bolt that passes through the slide groove from the outside and is fixed on the front linkage tube (351).

6. The zero gravity and high profile mechanism for a car seat cushion according to claim 2, characterized in that: The upper end of the first connecting rod assembly (310) is correspondingly hinged on the left and right outer sides of the seat frame frame (100), or the upper end of the first connecting rod assembly (310) is correspondingly hinged on the left and right inner sides of the seat frame frame (100).

7. The zero gravity and high profile mechanism for a car seat cushion according to claim 1, characterized in that: The first drive assembly (400) and the second drive assembly (500) adopt a motor screw assembly or a linear guide rail assembly.

8. The zero gravity and high profile mechanism for a car seat cushion according to claim 1, characterized in that: The seat frame frame (100) comprises seat frame side panels (110) arranged at intervals on the left and right, and a front transverse tube (120) arranged at the front ends of the two seat frame side panels (110).

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