CN215921968U

CN215921968U - Rear end lifting mechanism for seat part of automobile seat

Info

Publication number: CN215921968U
Application number: CN202122252105.4U
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 lifting mechanism for the rear end of a seat part of an automobile seat, wherein a supporting body is arranged at the rear end of a seat frame, the end part of the supporting body is connected with a swing arm, one end, far away from the supporting body, of the swing arm is rotatably arranged on the seat frame, a driving mechanism is arranged on the seat frame and used for driving the swing arm to rotate relative to the seat frame, and the swing arm can drive the supporting body to move along the height direction of the seat frame through rotation. The utility model has the beneficial effects that: the supporter along the direction of height of seat frame lifting upwards can compensate the difference in height between seat frame rear end and the back to form effective support to passenger's buttock rear side, make the passenger accomplish to lie flat completely, the passenger has better travelling comfort under the appearance mode of lying.

Description

Rear end lifting mechanism for seat part of automobile seat

Technical Field

The utility model relates to the technical field of automobile seats, in particular to a lifting mechanism for the rear end of a seat part of an automobile seat.

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 flat, a certain fall exists between the rear end of the seat part 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 utility model provides a lifting mechanism for the rear end of a seat part of an automobile seat, which can make up for the height difference between the rear end of the seat part and a backrest when the backrest is flat, and effectively improves the comfort experience of lying of a user.

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

the utility model provides a car seat portion rear end lifting mechanism, includes the seat frame, its key lies in: the rear end of seat frame is equipped with the supporter, the end connection of supporter has the swing arm, and the swing arm is kept away from the one end of supporter is rotated and is installed on the seat frame, install actuating mechanism on the seat frame, be used for the drive the relative seat frame of swing arm rotates, the swing arm rotates and to drive the direction of height removal that the supporter was followed the seat frame.

Adopt above-mentioned structure, the back of seat is laid down the back backward, and actuating mechanism drive supporter is along the direction of height ascending lifting upwards of seat frame, can reach and compensate the purpose of difference in height between seat frame rear end and the back to make the seat back can be laid down to true pure flat gesture, show the travelling comfort that has promoted the user and has lain and experience.

Preferably, the method comprises the following steps: the swing arm is provided with a driving section and a supporting section, wherein one end of the driving section is hinged to the middle of the side plate of the seat frame, the supporting section is arranged in an inward offset mode along the width direction of the seat frame relative to the driving section, and one end of the supporting section is fixedly connected to the end portion of the supporting body. By the design, the support body is rotatably assembled in an upward lifting mode, and the driving mechanism is favorable for controlling the swing arm to rotate.

Preferably, the method comprises the following steps: the driving mechanism comprises a speed reducing motor and a gear connected to an output shaft of the speed reducing motor, an arc-shaped tooth part is arranged at one end, far away from the end hinged with the seat frame, of the driving section, and the arc-shaped tooth part is meshed with the gear. By adopting the structure, the support body can be driven to be lifted upwards by the work of the speed reducing motor.

Preferably, the method comprises the following steps: the side plate is fixedly provided with a limiting pin, the driving section is provided with an arc-shaped hole, and the arc-shaped hole is sleeved on the limiting pin in a sliding manner. The arc hole slides in the spacer pin, can play spacing effect, promptly: defining upper and lower extreme positions of movement of the support body.

Preferably, the method comprises the following steps: the gear motor is installed in the outside of curb plate, and the gear passes through the support rotation and installs the inboard at the curb plate. The structure is adopted, so that the assembly is convenient.

Preferably, the method comprises the following steps: the support has three and curb plate fixed connection's journal stirrup, one of them the journal stirrup is fixed the tip of spacer pin, the middle part cover of gear is equipped with the installation axle, and the one end of installation axle supports on the support. By adopting the structure, all parts are reasonable in layout, and the compactness of the product structure and the reliability of assembly are guaranteed.

Preferably, the method comprises the following steps: the inner side of the arc-shaped tooth part is connected with a thickening toothed plate, and the tooth form of the thickening toothed plate is consistent with that of the arc-shaped tooth part. By adopting the structure, the meshing strength of the gear is improved.

Preferably, the method comprises the following steps: the seat frame is characterized in that an offset transition section is arranged between the driving section and the supporting section, the driving section, the supporting section and the offset transition section are integrally formed, and one end, connected with the supporting body, of the supporting section exceeds the driving section along the length direction of the seat frame.

Preferably, the method comprises the following steps: the supporting body is constructed into a strip-shaped structure transversely arranged along the width direction of the seat frame, and the rear end of the seat spring of the seat frame is connected to the supporting body.

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. Each part and the assembly layout thereof are reasonable in design, and the device has the technical advantages of high production, manufacturing and assembly reliability and good market application prospect.

Drawings

FIG. 1 is a schematic structural view of a seat frame;

FIG. 2 is a partial schematic view of a rear lifting structure of a seat frame;

FIG. 3 is a schematic structural view of a swing arm;

figure 4 is a schematic view of a seat having a seat rear end lift mechanism.

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, a rear end lifting mechanism for a seat portion of an automobile seat, the seat portion is a seat frame 1 of the automobile seat, side plates 1a are fixedly mounted on two 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 of a strip-shaped structure and is transverse to the width direction of the seat frame 1, swing arms 3 are connected to end portions of two ends of the support body 2, the swing arms 3 are provided with driving sections 3a and supporting sections 3b, the driving sections 3a extend towards the direction away from the supporting sections 3b, a mounting hole a is arranged at one end, away from the supporting sections 3b, of the driving sections 3a, the mounting hole a is hinged to the middle portion of the side plates 1a of the seat frame 1 through a pin b, and one end, away from the driving sections 3a, of the supporting sections 3b is fixedly connected to the end portions of the support body 2. The seat frame 1 is provided with a driving mechanism 4, and the driving mechanism 4 is used for driving one of the swing arms 3 to rotate relative to the side plate 1 a.

As shown in fig. 4, after the backrest a of the seat is laid down backwards, the driving mechanism 4 drives the swing arm 3 to rotate, the rotation of the swing arm 3 drives the support body 2 to lift upwards along the height direction of the seat frame 1, so as to achieve the purpose of compensating for the height difference between the rear end of the seat frame 1 and the backrest a, and enable the backrest a to be laid down to a truly flat posture, therefore, after a passenger lies on the seat, the rear side of the hip of the passenger can be supported by the support body 2, and the comfort experience of the user in lying down is remarkably improved.

As shown in fig. 2, in this embodiment, the driving mechanism 4 is composed of a speed reduction motor 4a and a gear 4b which are connected with each other by power, the gear 4b is rotatably mounted on the side plate 1a of the seat frame 1 through a mounting shaft 4c, an end of the driving section 3a, which is away from the side plate 1a and is hinged to the side plate, is provided with an arc-shaped tooth portion 3c, the arc-shaped tooth portion 3c is meshed with the gear 4b, the speed reduction motor 4a drives the gear 4b to rotate, and the gear 4b drives the driving section 3a to move through the arc-shaped tooth portion 3c, so as to control the support body 2 to move up or down along the height direction of the seat frame 1. Further, in order to improve the meshing strength of the gear, a thickening toothed plate 3e is installed on the inner side of the arc-shaped tooth portion 3c, and the tooth form of the thickening toothed plate 3e is consistent with that of the arc-shaped tooth portion 3 c.

As shown in fig. 3, the supporting section 3b is disposed to be offset inward along the width direction of the seat frame 1 relative to the driving section 3a, an offset transition section 3f is provided between the two, the driving section 3a, the supporting section 3b and the offset transition section 3f are integrally formed, and one end of the supporting section 3b connected to the supporting body 2 exceeds the driving section 3a along the length direction of the seat frame 1, that is: the arc-shaped tooth part 3c is positioned between the ends of the driving section 3a and the supporting section 3b, so that the gear motor 4a can better drive the swing arm 1 to rotate.

As shown in figure 1, the rear end of the seat spring 1b of the seat frame 1 is connected to the supporting body 2, and by the design, after the supporting body 2 at the rear end of the seat frame 1 is lifted upwards, a smooth transition between the supporting body 2 and the seat frame 1 can be ensured, and the uncomfortable feeling caused by the obvious upward protrusion of the supporting body 2 is avoided.

As shown in fig. 1 and 2, fixed mounting has spacer pin 5 on curb plate 1a, is equipped with arc hole 3d on the drive section 3a, and this arc hole 3d slides the cover and establishes on spacer pin 5, and when swing arm 1 tilting, arc hole 3d slides in spacer pin 5, can play spacing effect, promptly: defining the upper and lower extreme positions of movement of the support body 2. Further, for easy to assemble, gear motor 4a installs in the outside of curb plate 1a, and gear 4b rotates through support 6 and installs in the inboard of curb plate 1a, and support 6 has three and curb plate 1a fixed connection's journal stirrup 6a, and so design helps guaranteeing the compactness of product structure and the reliability of assembly. Simultaneously, fix one of them journal stirrup 6a at the tip of spacer pin 5, the installation axle 4c that the cover was established on the gear 4b axis supports on support 6, can also inject to have the constant distance between installation axle 4c and the spacer pin 5 to guarantee gear 4b and the precision and the stability of meshing between the arc tooth portion 3c, help promoting the transmission smoothness.

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 car seat portion rear end lifting mechanism, includes seat frame (1), its characterized in that: the rear end of seat frame (1) is equipped with supporter (2), the end connection of supporter (2) has swing arm (3), and swing arm (3) are kept away from the one end rotation of supporter (2) is installed on seat frame (1), install actuating mechanism (4) on seat frame (1), be used for the drive seat frame (1) rotates relatively in swing arm (3), swing arm (3) rotate and to drive the direction of height removal that seat frame (1) was followed in supporter (2).

2. The car seat rear end lifting mechanism according to claim 1, wherein: the swing arm (3) is provided with a driving section (3a) and a supporting section (3b), wherein one end of the driving section (3a) is hinged to the middle of the side plate (1a) of the seat frame (1), the supporting section (3b) is arranged in an inward offset mode along the width direction of the seat frame (1) relative to the driving section (3a), and one end of the supporting section (3b) is fixedly connected to the end portion of the supporting body (2).

3. The car seat rear end lifting mechanism according to claim 2, wherein: the driving mechanism (4) comprises a speed reducing motor (4a) and a gear (4b) connected to an output shaft of the speed reducing motor (4a), an arc-shaped tooth part (3c) is arranged at one end, far away from the end hinged with the seat frame (1), of the driving section (3a), and the arc-shaped tooth part (3c) is meshed with the gear (4 b).

4. The car seat rear end lifting mechanism according to claim 3, wherein: the side plate (1a) is fixedly provided with a limiting pin (5), the driving section (3a) is provided with an arc-shaped hole (3d), and the limiting pin (5) is sleeved with the arc-shaped hole (3d) in a sliding manner.

5. The car seat rear end lifting mechanism according to claim 4, wherein: the gear motor (4a) is installed on the outer side of the side plate (1a), and the gear (4b) is rotatably installed on the inner side of the side plate (1a) through the support (6).

6. The car seat rear end lifting mechanism according to claim 5, wherein: support (6) have three journal stirrup (6a) with curb plate (1a) fixed connection, one of them journal stirrup (6a) are fixed the tip of spacer pin (5), the middle part cover of gear (4b) is equipped with installation axle (4c), and the one end of installation axle (4c) is supported on support (6).

7. The car seat rear end lifting mechanism according to claim 3, wherein: the inner side of the arc-shaped tooth part (3c) is connected with a thickening toothed plate (3e), and the tooth form of the thickening toothed plate (3e) is consistent with that of the arc-shaped tooth part (3 c).

8. The car seat rear end lifting mechanism according to claim 2, wherein: the offset transition section (3f) is arranged between the driving section (3a) and the supporting section (3b), the driving section (3a), the supporting section (3b) and the offset transition section (3f) are integrally formed, and one end, connected with the supporting body (2), of the supporting section (3b) exceeds the driving section (3a) along the length direction of the seat frame (1).

9. The car seat rear end lifting mechanism according to claim 2, wherein: 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).