CN215921967U

CN215921967U - Linkage type seat frame rear side lifting mechanism

Info

Publication number: CN215921967U
Application number: CN202122250761.0U
Authority: CN
Inventors: 李伟; 辛艺; 唐杰; 苟华刚; 谭木星
Original assignee: Chongqing Yanfeng Johnson Controls Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-01
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a linkage type seat frame rear side lifting mechanism which comprises a seat frame and a backrest rotatably arranged at the rear end of the seat frame, wherein a supporting body is arranged at the rear end of the seat frame, the end part of the supporting body is connected with a swing arm, one end of the swing arm, far away from the supporting body, is rotatably arranged on the seat frame, and the swing arm can drive the supporting body to move along the height direction of the seat frame; and a linkage mechanism is arranged between the backrest and the swing arm, and in the process that the backrest rotates backwards, the linkage mechanism is used for driving the swing arm to rotate relative to the seat frame. The utility model has the beneficial effects that: the height difference between the rear end of the seat frame and the backrest can be compensated, and the rear side of the hip of the passenger is effectively supported, so that the passenger can lie flat completely, and the passenger has better comfort in the lying posture mode.

Description

Linkage type seat frame rear side lifting mechanism

Technical Field

The utility model relates to the technical field of automobile seats, in particular to a linkage type seat frame rear side lifting mechanism.

Background

The comfort of the seat plays a significant role in the riding experience of the user. Nowadays, both automobile manufacturers and consumer terminals place more stringent requirements on the comfort of automobile seats.

The backrest of most automobile seats in the market can be flatly laid, and particularly, the backrest of the automobile seat in a middle-high vehicle type is flatly laid, so that a user can conveniently rest in a lying posture. However, in the existing seat structure, after the backrest is flatly laid, a certain fall exists between the rear end of the seat frame and the support plane of the backrest, which leads to the lack of support at the rear side of the buttocks of the user, even in an obvious suspension state, and the comfort of the user who lies flat is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a linkage type seat frame rear lifting mechanism, which can automatically compensate for a height difference between a seat frame rear end and a backrest when the backrest is flattened.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a linkage formula seat frame rear side lifting mechanism, includes that seat frame and rotation install the back at seat frame rear end, and its key lies in: the rear end of the seat frame is provided with a support body, the end part of the support body is connected with a swing arm, one end of the swing arm, which is far away from the support body, is rotatably installed on the seat frame, and the swing arm can drive the support body to move along the height direction of the seat frame through rotation; and a linkage mechanism is arranged between the backrest and the swing arm, and in the process that the backrest rotates backwards, the linkage mechanism is used for driving the swing arm to rotate relative to the seat frame.

By adopting the structure, the backrest of the seat is laid backwards, the linkage mechanism drives the support body to be upwards lifted along the height direction of the seat frame, the height difference between the rear end of the seat frame and the backrest can be made up, and the rear side of the hip of a passenger is effectively supported, so that the passenger can lie flat completely, and the comfort experience of the user lying is remarkably improved.

Preferably, the method comprises the following steps: the linkage mechanism comprises a traction rope and a first roller, one end of the traction rope is connected to the backrest, the other end of the traction rope is connected to the swing arm, the first roller is rotatably installed at a position, corresponding to the upper portion of the swing arm, of the seat frame, and the traction rope is supported on the first roller. By adopting the structure, when the backrest is inclined backwards, the swing arm can be driven to rotate through the movement of the traction rope, so that the purpose of lifting the support body is achieved.

Preferably, the method comprises the following steps: the one end of swing arm articulates at the middle part of seat frame curb plate, and the other end is fixed at the tip of supporter, be connected through vacancy stroke part between haulage rope and the swing arm, wherein, the upper end at vacancy stroke part is connected to the haulage rope, the middle part of swing arm is equipped with the back shaft that extends along seat frame width direction, be equipped with the bar hole that cup joints with the back shaft slip on the vacancy stroke part. Adopt above-mentioned structure, the in-process that the back rotated backward has the idle stroke section, promptly: the earlier stage bar hole slides on the back shaft, does not drive the supporter and upwards rises, can guarantee like this that the passenger normally adjusts when the back inclination, and its buttock gesture does not change.

Preferably, the method comprises the following steps: and one end of the vacancy stroke component, which is far away from the traction rope, is hung with a spring, and the other end of the spring is hung on the swing arm. By adopting the structure, when the lifting mechanism is retracted, all the components can be ensured to be in the tightening posture, and the components are prevented from shaking.

Preferably, the method comprises the following steps: the back rotates the rear end of assembly at the seat frame through the pivot, set firmly downwardly extending's trailing arm in the pivot, the one end fixed connection that the haulage rope is close to the back is on the trailing arm, rotate in the pivot and install the second gyro wheel, the position rotation that the seat frame rear end corresponds the pivot below installs the third gyro wheel, the haulage rope supports in proper order on third gyro wheel and second gyro wheel towards the direction of keeping away from the trailing arm. By adopting the structure, the movement of the traction rope can be controlled by the backward rotation of the backrest, so that the swing arm at the front end is driven to rotate.

Preferably, the method comprises the following steps: the lower extreme of draft arm is equipped with the draw-in groove that runs through its front and back both sides, the end connection of haulage rope has spacing ball, and the diameter of this spacing ball is greater than the groove width of draw-in groove. Adopt above-mentioned structure to install the haulage rope fast.

Preferably, the method comprises the following steps: the seat frame is provided with a fourth roller and a connector, and the middle part of the traction rope is supported on the fourth roller and the connector. By adopting the structure, the function of guiding the traction rope and avoiding other structures of the seat can be realized.

Compared with the prior art, the utility model has the beneficial effects that:

1. after the backrest of the seat is laid backwards, the supporting body is upwards lifted along the height direction of the seat frame, the height difference between the rear end of the seat frame and the backrest can be made up, effective support is formed on the rear side of the hip of a passenger, the passenger can completely lie down, and the comfort experience of the user in lying down is remarkably improved.

2. The backrest linkage mode is adopted to drive the support body to move in a lifting mode, the number of driving mechanisms on the seat is reduced, all parts of the linkage mechanism and the assembly layout thereof are reasonable in design, and the backrest linkage mechanism has the technical advantages of high production, manufacturing and assembly reliability and good market application prospect.

Drawings

FIG. 1 is a schematic view of a vehicle seat;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I;

FIG. 3 is a partial schematic view of the linkage engaging the back and swing arms (back and seat frame not shown);

FIG. 4 is a schematic structural view of a swing arm;

FIG. 5 is a schematic view of a vacancy routing component.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1, 2 and 3, an automobile seat comprises a seat frame 1, a backrest a is rotatably and adjustably installed at the rear end of the seat frame 1 through a rotating shaft 5, side plates 1a are fixedly installed at both sides of the seat frame 1, a support body 2 is arranged at the rear end of the seat frame 1, the support body 2 is in a strip-shaped structure and is transversely arranged along the width direction of the seat frame 1, a swing arm 3 is fixedly connected to the end part of the support body 2, the swing arm 3 extends forwards relative to the support body 2, the swing arm 3 is hinged to the middle part of the side plate 1a through a mounting hole b at the front end, a linkage mechanism 4 is arranged between the backrest a and the swing arm 3, the linkage mechanism 4 drives the swing arm 3 to rotate in the process that the backrest a is laid backwards around the rotating shaft 5, the rotation of the swing arm 3 drives the support body 2 to be lifted upwards along the height direction of the seat frame 1, so as to achieve the purpose of compensating the height difference between the rear end of the seat frame 1 and the backrest a, and enable the backrest a to be laid to be in a true flat posture, therefore, after the passenger lies on the seat, the rear side of the hip of the passenger can be fully supported by the support body 2, and the comfort experience of the user in lying is remarkably improved.

As shown in fig. 2 and 3, in the present embodiment, the components related to the link mechanism 4 include: a third roller 4f, a second roller 4e, an adapter 4h, a fourth roller 4g, a first roller 4a, a vacancy stroke component 4c, a spring 4d and a traction rope 4b, wherein the third roller 4f, the adapter 4h, the fourth roller 4g and the first roller 4a are rotatably mounted inside a side plate 1a of the seat frame 1, the second roller 4e is rotatably mounted on a rotating shaft 5, a downwardly extending traction arm 6 is fixedly mounted on the rotating shaft 5, one end of the traction rope 4b is fixed at the lower end of the traction arm 6, the traction rope 4b is sequentially supported on the third roller 4f, the second roller 4e, the adapter 4h, the fourth roller 4g and the first roller 4a in a direction away from the traction arm 6, the traction rope 4b penetrates through one end of the first roller 4a and is connected to the vacancy stroke component 4c, in this embodiment, the third roller 4f is located below the second roller 4e, the third roller 4f is located behind the pulling arm 6, so that when the backrest 1 is rotated backward, the lower end of the pulling arm 6 moves forward, thereby pulling the pulling rope 4b to move.

As shown in fig. 4 and 5, a support shaft 3a extending in the width direction of the seat frame 1 is provided at the middle of the swing arm 3, a strip-shaped hole 4c1 is provided at the middle of the idle stroke member 4c, the strip-shaped hole 4c1 is slidably fitted over the support shaft 3a, both ends of the idle stroke member 4c are connected to a pull rope 4b and a spring 4d, respectively, and the other end of the spring 4d is connected to the swing arm 3.

The movement process of the linkage type seat frame rear side lifting mechanism provided by the embodiment is as follows:

referring to fig. 3, the backrest 1 is turned rearward → the rotation shaft 5 is turned → the lower end of the pulling arm 6 is turned forward → the pulling rope 4b is moved → the vacant stroke part 4c is turned obliquely to be upright → the strip-shaped hole 4c1 of the vacant stroke part 4c slides upward relative to the support shaft 3a → the swing arm 3 is turned upward around the mounting hole b → the support body 2 is lifted upward.

In the above movement process, the idle stroke part 4c rotates from the inclined state to the vertical state, and the upward sliding state of the strip-shaped hole 4c1 relative to the support shaft 3a is the idle stroke, and in the process, the swing arm 3 and the support body 2 do not move. By the design, when the passenger normally adjusts the inclination angle of the backrest, the posture of the hip of the passenger can be ensured not to change.

As shown in fig. 3, in order to conveniently install the end of the traction rope 4b at the lower end of the traction arm 6, the lower end of the traction arm 6 is provided with a slot 6a penetrating through the front side and the rear side of the traction arm, the end of the traction rope 4b is connected with a limiting ball a, and the diameter of the limiting ball a is larger than the slot width of the slot 6 a. The fourth roller 4g and the adapter 4h arranged on the side plate 1a of the seat frame 1 can enable the traction rope 4b to avoid other structures of the seat, thereby being beneficial to product assembly.

As shown in fig. 2, when a user normally sits on the seat frame 1, in order to ensure the support strength of the support body 2 to the buttocks, a bearing part 7 is arranged at a position below the support body 2 at the rear end of the seat frame 1, that is: the support body 2 is supported on the carrier part 7 in a folded state.

As shown in fig. 1 and 2, the rear end of the seat spring 1b of the seat frame 1 is connected to the support body 2, and after the support body 2 is lifted upwards, the seat spring 1b deforms along with the seat frame, so that a smooth transition between the support body 2 and the seat frame 1 can be ensured, and the discomfort caused by the obvious upward protrusion of the support body 2 is avoided.

In order to ensure the stability of the linkage motion of the support body 2 and the backrest 1, the two ends of the support body 2 are both provided with a swing arm 3 and a linkage mechanism 4.

The traction rope 4b can be directly fixedly connected with any position of the backrest 1 without passing through the second roller 4e, the third roller 4f and the traction arm 6, and the traction rope 4b can be pulled to move as long as the backrest 1 rotates backwards.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a linkage type seat frame rear side lifting mechanism, includes seat frame (1) and rotates and installs back (A) at seat frame (1) rear end, its characterized in that: a supporting body (2) is arranged at the rear end of the seat frame (1), the end part of the supporting body (2) is connected with a swing arm (3), one end, far away from the supporting body (2), of the swing arm (3) is rotatably installed on the seat frame (1), and the swing arm (3) can drive the supporting body (2) to move along the height direction of the seat frame (1) in a rotating mode; and a linkage mechanism (4) is arranged between the backrest (A) and the swing arm (3), and in the process that the backrest (A) rotates backwards, the linkage mechanism (4) is used for driving the swing arm (3) to rotate relative to the seat frame (1).

2. The coordinated type seat frame rear side lifting mechanism of claim 1, characterized in that: link gear (4) include haulage rope (4b) and first gyro wheel (4a), the one end of haulage rope (4b) is connected on back (A), and the other end is connected on swing arm (3), first gyro wheel (4a) are rotated and are installed and are corresponded seat frame (1) the position of swing arm (3) top, haulage rope (4b) support on first gyro wheel (4 a).

3. The coordinated type seat frame rear side lifting mechanism of claim 2, characterized in that: the one end of swing arm (3) articulates at the middle part of seat frame (1) curb plate (1a), and the tip at supporter (2) is fixed to the other end, be connected through vacancy stroke part (4c) between haulage rope (4b) and swing arm (3), wherein, haulage rope (4b) are connected in the upper end of vacancy stroke part (4c), the middle part of swing arm (3) is equipped with along back shaft (3a) that seat frame (1) width direction extends, be equipped with on vacancy stroke part (4c) with back shaft (3a) slip muff-coupling's strip hole (4c 1).

4. The coordinated type seat frame rear side lifting mechanism of claim 3, characterized in that: and one end of the vacant stroke component (4c), which is far away from the traction rope (4b), is hung with a spring (4d), and the other end of the spring (4d) is hung on the swing arm (3).

5. The coordinated type seat frame rear side lifting mechanism of claim 2, characterized in that: backrest (A) rotates the rear end of assembly at seat frame (1) through pivot (5), set firmly downwardly extending's trailing arm (6) on pivot (5), the one end fixed connection that haulage rope (4b) are close to backrest (A) is on trailing arm (6), rotate on pivot (5) and install second gyro wheel (4e), and seat frame (1) rear end corresponds the position below pivot (5) and rotates and install third gyro wheel (4f), haulage rope (4b) supports in proper order on third gyro wheel (4f) and second gyro wheel (4e) towards the direction of keeping away from trailing arm (6).

6. The coordinated type seat frame rear side lifting mechanism of claim 5, characterized in that: the lower extreme of draft arm (6) is equipped with draw-in groove (6a) of running through its front and back both sides, the end connection of haulage rope (4b) has spacing ball (a), and the diameter of this spacing ball (a) is greater than the groove width of draw-in groove (6 a).

7. The coordinated type seat frame rear side lifting mechanism of claim 2, characterized in that: the seat frame (1) is provided with a fourth roller (4g) and a switching piece (4h), and the middle part of the traction rope (4b) is supported on the fourth roller (4g) and the switching piece (4 h).

8. The coordinated type seat frame rear side lifting mechanism of claim 1, characterized in that: the supporting body (2) is configured into a strip-shaped structure transversely arranged along the width direction of the seat frame (1), and the rear end of a seat spring (1b) of the seat frame (1) is connected to the supporting body (2).

9. The coordinated type seat frame rear side lifting mechanism of claim 1, characterized in that: and a bearing part (7) is arranged at the rear end of the seat frame (1) corresponding to the position below the support body (2).

10. The coordinated type seat frame rear side lifting mechanism of claim 1, characterized in that: both ends of the supporting body (2) are provided with a swing arm (3) and a linkage mechanism (4).