CN222004976U - A car seat back adjustment and seat cushion linkage lifting mechanism - Google Patents

Abstract

The utility model provides an automobile seat backrest adjusting and seat cushion linkage lifting mechanism, wherein a backrest framework is rotatably arranged at the rear end of a seat frame framework, two linkage rods are symmetrically arranged at two sides of the seat frame framework, the front end of a seat basin is hinged to the seat frame framework, two sliding grooves are symmetrically arranged at the rear end of the seat basin, a return spring is arranged between the seat frame framework and the rear end of the seat basin, one end of each linkage rod is hinged to the backrest framework, the other end of each linkage rod is slidably hinged to the tail end of each sliding groove, the hinging points of the linkage rods and the backrest framework and the hinging points of the seat frame framework are positioned on the same axis, a driving piece is arranged on the backrest framework, when the backrest framework is turned backwards from an initial position to a turning angle limit position after a riding state, the driving piece can be abutted with the linkage rods, and at the moment, the driving piece can drive the linkage rods to slide, so that the rear end of the seat basin is lifted. The utility model can realize independent adjustment of the backrest in the backrest riding state angle range and can realize lifting adjustment of the seat cushion when the backrest is laid down.

Description

Car seat back is adjusted and seatpad linkage lifting mechanism

Technical Field

The utility model relates to the technical field of automobile seats, in particular to an automobile seat backrest adjusting and seat cushion linkage lifting mechanism.

Background

The comfort of car seats has a vital role for the user's riding experience. Today, both car manufacturers and consumer terminals place more stringent demands on the comfort of the seat. In order to facilitate the rest of the passengers or provide richer sitting modes, most seats have a function of being flat, namely: the backrest is reclined to a horizontal or nearly horizontal position.

In the existing car seat structure, because the rear end of the seat support plane is slightly inclined downwards, and the rotation center line of the backrest angle adjuster is higher than the seat support plane, after the backrest is flat, a height difference exists between the seat support plane and the backrest support plane, the height difference can cause the rear end of the buttocks of a user to lack support, even in an obvious suspension state, and the comfort of lying of the user is poor. In order to solve the above problems, although some seats realize the seat-back linkage to eliminate the height difference between the seat cushion and the backrest, the existing seat-back linkage mechanism is complex in structure, and the backrest is often in full-stroke linkage with the seat cushion, and the backrest cannot be independently adjusted in a specific stroke.

Disclosure of utility model

Aiming at the problems in the prior art, the utility model aims to provide the automobile seat backrest adjusting and seat cushion linkage lifting mechanism, which can not only realize independent adjustment of the backrest in the backrest sitting state angle range and avoid the influence of the sitting backrest linkage on the sitting experience of a user, but also realize the lifting adjustment of the seat cushion when the backrest is laid down, and eliminate the height difference between the seat cushion and the backrest.

In order to achieve the above-mentioned purpose, the utility model provides a back adjustment and seat cushion linkage lifting mechanism of an automobile seat, which comprises a backrest framework, a seat frame framework and a seat basin, wherein the backrest framework is rotatably arranged at the rear end of the seat frame framework, the seat basin is positioned above the seat frame framework, the seat cushion linkage lifting mechanism also comprises two linkage rods symmetrically arranged at two sides of the seat frame framework, the front end of the seat basin is hinged on the seat frame framework, two sliding grooves extending forwards and backwards are symmetrically arranged at the rear end of the seat basin, a return spring is arranged between the seat frame framework and the rear end of the seat basin, one end of the linkage rod is hinged on the backrest framework, the other end of the linkage rod is hinged at the tail end of the corresponding side sliding groove and can slide along the sliding groove, the hinge point of the linkage rod and the backrest framework and the hinge point of the seat frame framework are positioned on the same axis, the corresponding two linkage rods are provided with driving pieces, and the driving pieces are positioned at the rear sides of the linkage rods one by one, when the backrest framework is overturned backwards from an initial position to a state and the seat back overturned angle limit position, the driving pieces can just overturned with the corresponding side linkage rods to the corresponding side to the side linkage rods, and then drive the seat back to slide forwards, so that the driving pieces can slide forwards along the sliding grooves.

In the scheme, the method comprises the following steps: the backrest framework is turned back from the initial position to 20 degrees to the limit position of the back turning angle in the riding state, the backrest framework is turned back to 20-50 degrees to the lying adjustment angle, and when the backrest framework is turned back to 50 degrees, the linkage rod slides to the forefront end of the sliding groove. The method comprises the following steps: the backrest framework rotates forwards and backwards for 20 degrees from the initial position to form a normal riding state using angle, and the sitting basin is not linked at the moment; the back frame rotates backwards by 20-50 degrees to form a lying adjustment angle, at the moment, the sitting basin is linked with the back frame, and the rear end of the sitting basin rises to be flush with the back frame.

In the scheme, the method comprises the following steps: the linkage rod is L-shaped or V-shaped, so that the driving piece can be just abutted with the linkage rod when the backrest framework is turned backwards for 20 degrees from the initial position.

In the scheme, the method comprises the following steps: the front end of the sitting basin is hinged on the seat frame framework through two hinge brackets which are arranged in bilateral symmetry, and the sitting basin is fixedly connected with the hinge brackets, so that the structure is simple and the assembly is convenient.

In the scheme, the method comprises the following steps: the basin is characterized in that two slide supports are symmetrically welded at the rear end of the basin, the slide grooves are formed in the slide supports, the structure is simple, and the processing is convenient.

In the scheme, the method comprises the following steps: the return springs are connected between the slide way supports and the seat frame framework, and the two slide way supports are respectively connected with a return spring, so that the structure is simple, and the arrangement is convenient.

In the scheme, the method comprises the following steps: the slide support and the slide groove surface are provided with the plastic coating layer, and the plastic coating layer not only plays a role in protecting the slide support, but also can reduce noise when the linkage rod slides along the slide groove.

In the scheme, the method comprises the following steps: the linkage rod is hinged in the chute through the step bolt and the nut, and the structure is simple and the assembly is convenient.

The beneficial effects of the utility model are as follows: 1. the backrest framework is turned forwards, or when the backrest framework is turned between the initial position and the limit position of the turning angle after the riding state, the driving piece is not contacted with the linkage rod, and the backrest framework can be independently adjusted; namely, when the backrest framework is used for adjusting the riding state angle, the sitting basin is not moved, so that the height of the seat cushion is also changed under the riding state angle of the backrest framework, and the riding comfort of a user is prevented from being influenced. 2. When the backrest framework is backwards turned to a limit position exceeding the turning angle after the sitting state, namely, the lying angle is entered, and when the backrest framework is subjected to lying angle adjustment, the driving piece is abutted with the linkage rod and drives the linkage rod to slide forwards along the sliding groove, so that the rear end of the sitting basin is lifted, and zero height difference between the seat cushion and the backrest framework is realized. In a word, compared with the traditional backrest linkage mechanism, the backrest linkage mechanism has the advantages that the structure is simpler, the operation is more convenient, the independent adjustment of the backrest can be realized within the backrest riding state angle range, the influence of the backrest linkage on the riding experience of a user is avoided, the lifting adjustment of the seat cushion can be realized when the backrest is laid down, and the height difference between the seat cushion and the backrest is eliminated.

Drawings

Fig. 1 is a schematic view of the present utility model when the back frame is turned to the limit position of the turning angle before the sitting state.

Fig. 2 is a schematic view of the present utility model with the back frame in an initial position.

Fig. 3 is a schematic view of the present utility model when the back frame is turned to the turning angle limit position after the sitting state.

Fig. 4 is a schematic view of the present utility model with the back frame flipped to a lying flat angular position.

Fig. 5 is a schematic installation view of the return spring.

Fig. 6 is a schematic view of the installation of the chute support.

Detailed Description

As shown in fig. 1-6, a backrest adjusting and seat cushion linkage lifting mechanism of an automobile seat mainly comprises a backrest framework 1, a seat frame framework 5, a seat basin 4 and two linkage rods 3 symmetrically arranged on two sides of the seat frame framework 5. The backrest framework 1 is rotatably arranged at the rear end of the seat frame framework 5, and the seat basin 4 is positioned above the seat frame framework 1.

The front end of the sitting basin 4 is hinged on the sitting frame framework 5, two sliding grooves 71 extending front and back are symmetrically arranged at the rear end of the sitting basin 4, and a return spring 8 is arranged between the sitting frame framework 5 and the rear end of the sitting basin 4. One end of the linkage rod 3 is hinged on the backrest framework 1, the other end is hinged at the tail end of the corresponding side chute 71 and can slide along the chute 71, and the hinge point of the linkage rod 3 and the backrest framework 1 and the hinge point of the backrest framework 1 and the seat frame framework 5 are positioned on the same axis.

The backrest framework 5 is provided with driving pieces 2 corresponding to the two linkage rods 3 one by one, and the driving pieces 2 are positioned at the rear sides of the linkage rods 3.

When the backrest framework 1 is turned backwards from the initial position to the limit position of the turning angle after the sitting state, the driving piece 2 can be just abutted against the linkage rod 3 at the corresponding side, and the backrest framework 1 is continuously turned backwards at the moment, the driving piece 2 can drive the linkage rod 3 to slide forwards along the sliding groove 71, so that the rear end of the sitting basin 4 is lifted; when the rear end of the sitting basin 4 is lifted, the return spring 8 is pulled, and when the backrest framework 1 is turned back to be within the normal use angle range, the rear end of the sitting basin 4 can be reset under the action of the pull force of the return spring 8.

The seat is divided into a seating state and a lying state. According to the riding requirements of different people, the backrest framework 1 can be subjected to angle adjustment between an initial position and a turning angle limit position after a riding state, and at the moment, the angle of the sitting basin 4 is kept unchanged; when the backrest framework 1 continues to turn backwards, the rear end of the sitting basin 4 starts to lift upwards, so that the sitting state is converted into the lying state. Preferably, when the back frame 1 is turned back from the initial position by 20 ° to the limit position of the turning angle after the riding state, the back frame 1 is turned back by 20 ° to 50 ° to the reclining adjustment angle, and when the back frame 1 is turned back to 50 °, the link lever 3 slides to the forefront end of the chute 71. The method comprises the following steps: the backrest framework 1 rotates forwards and backwards from the initial position by 20 degrees to form a normal riding state using angle, and the sitting basin 4 is not linked at the moment; the backrest framework 1 rotates backwards by 20-50 degrees to form a lying adjustment angle, at the moment, the sitting basin 4 is linked with the backrest framework 1, and the rear end of the sitting basin 4 is lifted to be flush with the backrest framework 1.

Preferably, the linkage rod 3 is in an L shape or a V shape, so that the driving piece 2 can be just abutted with the linkage rod 3 when the backrest framework 1 is turned back by 20 degrees from the initial position.

Preferably, the front end of the sitting basin 4 is hinged on the seat frame skeleton 5 through two hinge brackets 6 which are symmetrically arranged left and right, the sitting basin 4 and the hinge brackets 6 are fixedly connected, and the structure is simple and the assembly is convenient.

Preferably, two slide supports 7 are symmetrically welded at the rear end of the sitting basin 4, and a slide groove 71 is formed in the slide supports 7, so that the structure is simple and the processing is convenient.

Preferably, return springs 8 are connected between the slide support 7 and the seat frame skeleton 5, and two slide supports 7 are respectively connected with a return spring 8, so that the structure is simple and the arrangement is convenient.

Preferably, the surfaces of the slide support 7 and the slide groove 71 are provided with plastic coating layers, and the plastic coating layers not only play a role in protecting the slide support 7, but also can reduce noise when the linkage rod 3 slides along the slide groove 71.

Preferably, the linkage rod 3 is hinged in the chute 71 through a step bolt and a nut, so that the structure is simple, the assembly is convenient, and the cost of parts is low.

Claims (8)

1. The utility model provides an automobile seat back is adjusted and seatpad linkage lifting mechanism, includes back skeleton (1), seat frame skeleton (5) and seat basin (4), its characterized in that: still including symmetry setting up in two gangbars (3) of seat frame skeleton (5) both sides, seat basin (4) front end articulates on seat frame skeleton (5), seat basin (4) rear end bilateral symmetry is equipped with spout (71) that extend around two, be equipped with return spring (8) between seat frame skeleton (5) and the seat basin (4) rear end, the one end of gangbar (3) articulates on back skeleton (1), and the other end articulates in corresponding side spout (71) end to can slide along spout (71), and the pin joint of gangbar (3) and back skeleton (1), back skeleton (1) and seat frame skeleton (5) is located same axis, corresponding two gangbars (3) one-to-one on back skeleton (1) are equipped with driving piece (2), driving piece (2) are located the rear side of gangbar (3), when back skeleton (1) are by initial position backward to take back upset angle extreme position, driving piece (2) can just with corresponding side spout (71) to overturn, thereby drive back skeleton (3) forward along the drive piece (71), and back skeleton (1) can continue to slide forward.

2. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 1, wherein: the backrest framework (1) is turned backwards for 20 degrees from the initial position to be the limit position of the turning angle after the sitting state, the backrest framework (1) is turned backwards for 20-50 degrees to be the lying adjustment angle, and when the backrest framework (1) is turned backwards to 50 degrees, the linkage rod (3) slides to the forefront end of the sliding groove (71).

3. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 2, wherein: the linkage rod (3) is L-shaped or V-shaped.

4. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 1, wherein: the front end of the sitting basin (4) is hinged on the seat frame skeleton (5) through two hinge brackets (6) which are symmetrically arranged left and right, and the sitting basin (4) is fixedly connected with the hinge brackets (6).

5. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 1, wherein: two slide supports (7) are symmetrically welded at the rear end of the sitting basin (4) in a left-right mode, and the sliding groove (71) is formed in the slide supports (7).

6. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 5, wherein: the return springs (8) are connected between the slide way supports (7) and the seat frame framework (5), and the two slide way supports (7) are respectively connected with a return spring (8).

7. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 5, wherein: the surface of the slideway bracket (7) and the slideway (71) is provided with a plastic coating layer.

8. The vehicle seat back adjustment and seat cushion linkage lifting mechanism of claim 1, wherein: the linkage rod (3) is hinged in the chute (71) through a step bolt and a matched nut.