CN115675213A

CN115675213A - Lying seat with four-bar linkage mechanism for assisting in increasing front space

Info

Publication number: CN115675213A
Application number: CN202211480270.8A
Authority: CN
Inventors: 唐江; 李龙; 赵玮; 薛磊; 刘世明; 左家乐; 陈国刚
Original assignee: Magna Seating Research and Development Chongqing Co Ltd
Current assignee: Magna Seating Research and Development Chongqing Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-02-03

Abstract

The invention discloses a lying seat with a four-bar linkage mechanism for assisting in increasing the front space, which comprises a backrest assembly, a cushion assembly and an angle adjuster, wherein the backrest assembly can be turned backwards and laid flat, a front connecting bar, a rear connecting bar, a base and a four-bar linkage driving mechanism are arranged below the cushion assembly, a front base support and a rear base support are fixedly arranged above the base, the upper ends of the front connecting bar and the rear connecting bar are respectively hinged on the cushion assembly, the lower end of the front connecting bar is hinged on the front base support, and the lower end of the rear connecting bar is hinged on the rear base support, so that the four-bar linkage mechanism is formed below the seat assembly, and the four-bar linkage driving mechanism is used for driving the rear connecting bar to rotate clockwise or anticlockwise around a lower hinged point, so that the whole seat assembly is driven to move backwards or return forwards. After the backrest is overturned and laid flat, the front space can be enlarged through the four-bar mechanism, and more comfortable experience is provided for the passengers to lie.

Description

Lying seat with four-bar linkage mechanism for assisting in increasing front space

Technical Field

The invention relates to the technical field of automobile seats, in particular to a lying seat capable of increasing the front space.

Background

The main function of the automobile seat is to provide support so that passengers can sit safely and comfortably; secondly, when a safety accident such as collision or rolling occurs, the passenger is restrained within a predetermined position range to ensure the safety of the passenger.

With the increase of vehicle use scenes in the modern society, the requirement of consumers on the comfort of the interior space of the automobile is higher and higher, and the requirement on the interior function is more diversified. Not only is more function adjustment required for the front row, but also higher comfort requirements are provided for the rear row. Although the existing automobile seat, particularly the rear seat, can realize the turnover and flat lying of the backrest for lying, the front space is not enough, and the comfortable sleeping or resting experience of passengers cannot be met.

Disclosure of Invention

The invention aims to provide an automobile seat, which can not only turn over and lay a backrest flat, but also increase the front space through a four-bar mechanism on the basis, and provide more comfortable experience for passengers to lie.

Therefore, the technical scheme adopted by the invention is as follows: a reclining seat with a four-bar linkage mechanism for assisting in increasing the front space comprises a seat assembly consisting of a backrest assembly, a cushion assembly and a recliner, wherein the recliner is installed between the backrest assembly and the cushion assembly and can turn over and lay flat the backrest assembly backwards, a front connecting bar, a rear connecting bar, a base and a four-bar linkage driving mechanism are arranged below the cushion assembly, a front base support and a rear base support are fixedly installed above the base, the upper ends of the front connecting bar and the rear connecting bar are respectively hinged on the cushion assembly, the lower end of the front connecting bar is hinged on the front base support, the lower end of the rear connecting bar is hinged on the rear base support, so that the four-bar linkage mechanism is formed below the seat assembly, and the four-bar linkage driving mechanism is used for driving the rear connecting bar to rotate clockwise or anticlockwise around a lower hinged point so as to drive the whole seat assembly to move backwards or return forwards.

Preferably, the front connecting rod, the rear connecting rod, the base, the front base support and the rear base support are respectively two and are arranged below the cushion assembly in a bilateral symmetry mode.

Preferably, the four-bar linkage driving mechanism comprises a driving motor and two angle adjusters which are symmetrically arranged left and right, and the two angle adjusters are connected through a synchronizing rod, so that the synchronous driving of the same driving motor is realized; the angle adjuster is arranged between the rear connecting rod and the rear base support, one side of the angle adjuster is welded at the lower end of the rear connecting rod, the other side of the angle adjuster is welded on the rear base support, and the width of the rear connecting rod is gradually increased from top to bottom.

More preferably, the seat assembly is a rear quarter seat or a rear quarter seat, and the front end of the cushion assembly is provided with the leg rest assembly.

Further preferably, the base is mounted on an electric slide rail.

The invention has the beneficial effects that: after the backrest is turned over and laid flat, the front space can be enlarged through the four-bar mechanism, and more comfortable experience is provided for the passengers to lie; furthermore, when the leg support assembly is arranged, the backrest is turned over and flatly placed, the leg support assembly is opened, then the front space is enlarged through the four-bar mechanism, and the comfortable feeling is stronger.

Drawings

FIG. 1 is a layout view of two rows of seats on a vehicle body.

FIG. 2 is an overall view of the installation of the rear quarter seats of the automobile on the automobile body.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a middle position diagram of the rear quarter seat of the automobile when lying.

Fig. 5 shows the final position of the rear quarter seat of the motor vehicle when lying.

FIG. 6 is a schematic view of a four bar linkage drive mechanism.

Fig. 7 is a fully exploded schematic view of the four bar linkage.

Fig. 8 is a partially exploded schematic view of the four bar linkage.

Fig. 9 is a schematic view of the construction of the present invention applied to a two-row double belt sextant seat.

Fig. 10 is an exploded view of fig. 9 (without the motorized slide).

Figure 11 is an exploded view of a six-part back frame assembly.

Figure 12 is an exploded view of a six-part seat cushion frame assembly.

FIG. 13 is a schematic view of a first anti-dive bracket mounting location.

Fig. 14 is a partial enlarged view of fig. 13.

FIG. 15 is a schematic view of a second anti-dive bracket installation position.

Detailed Description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, a reclining seat with a four-bar linkage mechanism for assisting in increasing a front space is mainly used for a rear quarter seat assembly or a rear quarter seat assembly, and can also be used for a front seat.

Figures 2-8 show a condition for use in a rear quarter seat assembly including a seat assembly comprising a backrest assembly 1, a seat cushion assembly 2 and a recliner 3. The angle adjuster 3 is installed between the backrest assembly 1 and the cushion assembly 2, and can turn the backrest assembly 1 backwards and lay flat, which is an existing mechanism of the seat and is not described herein again.

A front connecting rod 5, a rear connecting rod 6, a base 7 and a four-bar driving mechanism 8 are arranged below the seat cushion assembly 2. Specifically, the front connecting rod 5, the rear connecting rod 6, the base 7, the front base support 9 and the rear base support 10 are respectively two and are arranged below the cushion assembly 2 in a bilateral symmetry manner.

A front base support 9 and a rear base support 10 are fixedly arranged above the base 7. The upper ends of the front connecting rod 5 and the rear connecting rod 6 are respectively hinged on the cushion assembly 2, the lower end of the front connecting rod 5 is hinged on the front base support 9, and the lower end of the rear connecting rod 6 is hinged on the rear base support 10, so that a four-bar mechanism is formed below the seat assembly. The base 7 supports the entire four-bar linkage. The four-bar linkage driving mechanism 8 is used for driving the rear connecting bar 6 to rotate clockwise or anticlockwise around the lower hinge point, so that the whole seat assembly is driven to move backwards or return forwards.

The four-bar linkage driving mechanism 8 preferably adopts a driving motor and two angle adjusters 3 symmetrically arranged left and right, and the two four-bar linkages share one set of four-bar linkage driving mechanism 8. The two angle adjusters 3 are connected through a synchronous rod 12, so that the same driving motor synchronously drives the four-bar mechanisms on two sides to move. The angle adjuster 3 is arranged between the rear connecting rod 6 and the rear base support 10, one side of the angle adjuster 3 is welded at the lower end of the rear connecting rod 6, the other side of the angle adjuster 3 is welded on the rear base support 10, and the width of the rear connecting rod 6 is gradually increased from top to bottom so as to facilitate the installation and arrangement of the angle adjuster. The specific structure of the four-bar linkage drive mechanism 8 is not limited thereto. When the four-bar linkage mechanism is used for a rear row six-minute seat assembly, the number of the four-bar linkage mechanism can be correspondingly adjusted to be three, namely left, middle and right.

Preferably, a leg rest assembly 4 is mounted to the front end of the seat cushion assembly 2. Fig. 4 and 5 show the adjustment process from the intermediate state to the final state, in which the leg rest assembly 4 is first lifted to the highest position and the backrest assembly 1 is adjusted backwards to the last position, as shown in fig. 4, simulating the need of the passenger to lie down when the passenger is parked; fig. 5 shows that after the leg rest assembly 4 and the backrest assembly 1 are adjusted to the final positions, the four-bar linkage is actuated to move the seat assembly backwards by a certain distance to meet the requirement of the passenger for lying.

The base 7 is preferably attached to the electric slide rail 11 so as to be slidable back and forth.

Passengers sit on the two-row seats of the automobile, and require large-angle adjustment of the backrest, and the seats can also be adjusted at a larger distance from front to back. However, since the rear seat belts in the current market are almost installed on the vehicle body, the passenger cannot meet the requirements of safety or comfort when the backrest is adjusted at a large angle or the front and rear of the seat are adjusted at a large distance; particularly, when two safety belts are arranged on the two rows of the six-minute seats, the requirement on the strength of the framework of the six-minute seats is higher, and once the strength of the seats is not enough, the requirement on the collision safety test cannot be met. .

As shown in fig. 9, the present solution is applied to a two-row double-safety-belt six-part seat, and includes a six-part backrest frame assembly a and a six-part cushion frame assembly B. The sixth minute backrest frame assembly A is rotationally connected with a connecting plate 31 at the rear end of the sixth minute cushion frame assembly B through an angle adjuster 3. A first safety belt 26 is installed on the left side of the top of the six-part seat framework assembly, and a second safety belt 17 is installed in the middle of the top of the six-part seat framework assembly. Move two safety belts from the automobile body to the skeleton of two rows of six minutes seats on, through many initiatives and lifting, increase skeleton intensity, satisfy collision safety test requirement, reduce cost simultaneously lightens weight, improves travelling comfort and security to possess the effect of anticollision dive.

As shown in fig. 9 to 11, a first reinforced steel plate 25, a second reinforced steel plate 28 and a third reinforced steel plate 29 are fixedly mounted on the left side surface of the sixth-part backrest frame assembly a for structural reinforcement of the upper mounting point of the first seat belt 26. The first reinforcing steel plate 25 is bent into an L shape by adopting a high-strength steel plate, is matched with the height of the six-part backrest frame assembly A in height, comprises a back plate 25a and a side plate 25b, and the upper part and the lower part of the side plate 25b are deviated outwards to form a step surface 25c. The second reinforcing steel plate 28 is welded to the lower outer side of the side plate 25b and just fills the step surface 25c. A third reinforcing steel plate 29 is welded to a lower portion of the front side of the back plate 25 a. The first reinforced steel plate 25, the second reinforced steel plate 28 and the third reinforced steel plate 29 are welded into a whole and then are attached and welded to the left side face of the six-part backrest frame assembly A. The first reinforced steel plate adopts a special L-shaped structure and a step surface structure, is equivalently bent from two directions, and fills the step surface through the second reinforced steel plate, so that the overall structural strength of the first reinforced steel plate is better.

A fourth reinforcing steel plate 30 is welded to the lower portion of the right side face of the sixth backrest frame assembly a in a fitted manner and is used for structurally reinforcing a lower mounting point of the second seat belt 17. The root parts of the left and right outer sides of the six-part backrest frame assembly A are specially reinforced so as to meet the requirement of higher bending resistance torque of the root parts.

A tenth reinforcing steel plate 27 is welded to the front lower portion of the middle position of the sixth-part backrest frame assembly a in an attached manner and is used for performing structural reinforcement on a lower mounting point of the first safety belt 26. Preferably, a T-shaped eleventh reinforcing plate 18 is welded to the front wall of the tenth reinforcing steel plate 27.

The connecting plate 31 is formed by two high-strength steel buckles welded together to bear the force applied to the backrest assembly by the double safety belts.

Referring to fig. 10 and 12, the main body of the six-point seat cushion frame assembly B is a high-strength aluminum alloy seat pan B1, a fifth reinforcing steel plate 32 is attached to the upper side of the high-strength aluminum alloy seat pan B1, a sixth reinforcing steel plate 13 with upper and lower flanges is attached to the left side of the seat pan B1, a seventh reinforcing steel plate 14 with upper and lower flanges is attached to the right side of the seat pan B, and the fifth reinforcing steel plate, the sixth reinforcing steel plate and the seventh reinforcing steel plate are respectively fixedly mounted on the high-strength aluminum alloy seat pan B1 through bolts. Adopt high strength aluminum alloy to sit the basin, can lighten weight, add fifth, six, seven reinforcing steel plate simultaneously to improve overall strength, especially sixth, seven reinforcing steel plate have turn-ups from top to bottom, can follow the high strength aluminum alloy and sit the basin and carry out parcel formula structure from the left and right sides and strengthen.

Preferably, the fifth reinforced steel plate 32 has an avoidance gap 32a at the rear middle part thereof for avoiding the process requirements of the structural members or the connecting members, and the eighth reinforced steel plate 15 and the ninth reinforced steel plate 16 are installed at the avoidance gap 32 a. And the eighth reinforcing steel plate and the ninth reinforcing steel plate are fixedly arranged on the high-strength aluminum alloy sitting basin B1 through bolts respectively.

Referring to fig. 9 to 15, the electric slide rail 11 is provided with a base 7, the front end of the high-strength aluminum alloy seat basin B1 is integrally provided with a left leg B2, a middle leg B2 and a right leg B2, and the base 7 is provided with a first anti-dive bracket 23 at a position corresponding to each leg B2 with a space. When the vehicle crashes, the seat assembly dives, and when the structure warp to a certain distance, landing leg B2 supported with the contact of first anti-dive support 23 to reduce the injury of seat assembly dive to the passenger.

Fig. 4 and 5 show the adjustment process from the intermediate state to the final state, in which the leg rest assembly 4 is first lifted to the highest position, and the six-part backrest frame assembly is adjusted backwards to the final position, as shown in fig. 4, simulating the passenger to lie down when the passenger parks; fig. 5 shows that after the leg rest assembly 4 and the six-part backrest assembly are adjusted to the final positions, the four-bar linkage is started to move the six-part seat frame assembly backwards by a certain distance to meet the requirement of the passengers for lying.

As shown in fig. 12 to 15, a second submergence preventing bracket 24 is further provided on the base 7 corresponding to each front link 5, and when the four-link mechanism is in the front end position, which is a normal seating position of the seat, the second submergence preventing bracket 24 is located immediately below the front link 5 with a space left. Preferably, the second anti-dive bracket 24 is formed by welding a gate frame 24a and a front closure plate 24b, and the top of the gate frame 24a is gradually raised from the rear to the front and forms a box-like structure with the front closure plate 24 b. When the passenger normally takes the vehicle and collides, the front connecting rod 5 is deformed to a certain distance and contacts with the second anti-submergence support 24, and the second anti-submergence support 24 supports the front connecting rod 5 to prevent the front connecting rod 5 from being deformed or pressure feed from damaging the passenger.

The electric slide rail 11 is divided into a left part, a middle part and a right part, the front connecting rod 5, the rear connecting rod 6, the front base support 9 and the rear base support 10 are respectively three and are respectively arranged at the left position, the middle position and the right position below the six-part cushion framework assembly B. The three four-bar linkage mechanisms share one set of four-bar linkage driving mechanism. The three angle adjusters 3 are connected by a synchronizing rod 12, so that the same driving motor can be synchronously driven.

Claims

1. The utility model provides a supplementary seat that lies who increases front portion space of four-bar linkage, includes the seat assembly of constituteing by back assembly (1), cushion assembly (2) and angle modulation ware (3), install between back assembly (1) and cushion assembly (2) angle modulation ware (3), can carry out back upset of back assembly (1) and set level its characterized in that: be provided with preceding connecting rod (5), back connecting rod (6), base (7) and four-bar linkage actuating mechanism (8) in the below of cushion assembly (2), base (7) top fixed mounting has preceding base support (9) and back base support (10), and the upper end of preceding connecting rod (5), back connecting rod (6) articulates respectively on cushion assembly (2), and the lower extreme of preceding connecting rod (5) articulates on preceding base support (9), and the lower extreme of back connecting rod (6) articulates on back base support (10) to form four-bar linkage under the seat assembly, four-bar linkage actuating mechanism (8) are used for driving back connecting rod (6) around lower pin joint clockwise or anticlockwise rotation, thereby drive whole seat assembly rearward movement or forward return.

2. A reclining seat with increased front space assisted by a four-bar linkage according to claim 1, wherein: the front connecting rod (5), the rear connecting rod (6), the base (7), the front base support (9) and the rear base support (10) are respectively arranged in a bilateral symmetry mode below the cushion assembly (2).

3. A reclining seat with increased front space assisted by a four-bar linkage according to claim 2, wherein: the four-connecting-rod driving mechanism (8) comprises a driving motor and two angle adjusters (3) which are symmetrically arranged left and right, and the two angle adjusters (3) are connected through a synchronizing rod (12), so that the synchronous driving of the same driving motor is realized; the angle adjuster (3) is arranged between the rear connecting rod (6) and the rear base support (10), one side of the angle adjuster is welded at the lower end of the rear connecting rod (6), the other side of the angle adjuster is welded on the rear base support (10), and the width of the rear connecting rod (6) is gradually increased from top to bottom.

4. A lying seat with an increased front space assisted by a four-bar linkage according to claim 1, characterized in that: the seat assembly is a rear quarter seat or a rear sextant seat, and the front end of the cushion assembly (2) is provided with a leg support assembly (4).

5. A reclining seat with increased front space assisted by a four-bar linkage according to claim 2, wherein: the base (7) is installed on the electric sliding rail (11).

6. A reclining seat with increased front space assisted by a four-bar linkage according to claim 1, wherein: the seat is applied to a seat with two rows of double safety belts and six minutes, and comprises a backrest skeleton assembly (A) and a cushion skeleton assembly (B), wherein the backrest skeleton assembly (A) is rotationally connected with a connecting plate (31) at the rear end of the cushion skeleton assembly (B) through an angle adjuster (3), a first safety belt (26) is installed on the left side of the top of the seat skeleton assembly, and a second safety belt (17) is installed in the middle position of the top;

a first reinforced steel plate (25), a second reinforced steel plate (28) and a third reinforced steel plate (29) are fixedly arranged on the left side surface of the sixth backrest frame assembly (A); the first reinforcing steel plate (25) is bent into an L shape by adopting a high-strength steel plate, is matched with the height of the six-part backrest framework assembly (A), comprises a back plate (25 a) and a side plate (25 b), and the upper part of the side plate (25 b) is shifted outwards relative to the lower part to form a step surface (25 c); the second reinforced steel plate (28) is welded on the outer side of the lower part of the side plate (25 b) and just fills up the step surface (25 c); a third reinforced steel plate (29) is welded at the lower part of the front side of the back plate (25 a); the first reinforced steel plate (25), the second reinforced steel plate (28) and the third reinforced steel plate (29) are welded into a whole and then are welded to the left side surface of the six-part backrest frame assembly (A) in an attaching mode; a fourth reinforced steel plate (30) is welded at the lower part of the right side surface of the sixth-minute backrest framework assembly (A) in a fitting manner; a tenth reinforced steel plate (27) is welded at the front lower part of the middle position of the sixth backrest framework assembly (A) in an attaching manner; the connecting plate (31) is formed by buckling and welding two pieces of high-strength steel; the main body of the six-part cushion skeleton assembly (B) is a high-strength aluminum alloy sitting basin (B1), a fifth reinforced steel plate (32) is attached to the upper side of the high-strength aluminum alloy sitting basin (B1), a sixth reinforced steel plate (13) with flanges at the upper and lower sides is attached to the left side of the high-strength aluminum alloy sitting basin, a seventh reinforced steel plate (14) with flanges at the upper and lower sides is attached to the right side of the high-strength aluminum alloy sitting basin, and the fifth, sixth and seventh reinforced steel plates are fixedly mounted on the high-strength aluminum alloy sitting basin (B1) through bolts respectively;

a left supporting leg, a middle supporting leg and a right supporting leg (B2) are integrally arranged at the front end of the high-strength aluminum alloy sitting basin (B1), and a first anti-submergence support (23) is arranged at the position, corresponding to each supporting leg (B2), on the base (7) and a gap is reserved; and a second anti-submergence support (24) is arranged on the base (7) corresponding to each front connecting rod (5), and when the four-bar linkage mechanism is at the front end position, the second anti-submergence support (24) is positioned under the front connecting rods (5) and is provided with an interval.

7. A lying seat with an increased front space assisted by a four-bar linkage according to claim 6, characterized in that: the middle part of the rear side of the fifth reinforced steel plate (32) is provided with an avoiding notch (32 a), eighth and ninth reinforced steel plates (15 and 16) are arranged at the avoiding notch (32 a), and the eighth and ninth reinforced steel plates (15 and 16) are fixedly arranged on the high-strength aluminum alloy sitting basin (B1) through bolts respectively.

8. A lying seat with an increased front space assisted by a four-bar linkage according to claim 6, characterized in that: the front wall of the tenth reinforced steel plate (27) is welded with a T-shaped eleventh reinforced plate (18).

9. The double seat belt framework of a two-row six-component seat of an automobile according to claim 6, characterized in that: the second anti-submergence support (24) is formed by welding a door-shaped frame (24 a) and a front sealing plate (24 b), wherein the top of the door-shaped frame (24 a) gradually rises from back to front, and the top of the door-shaped frame and the front sealing plate (24 b) enclose to form a box-shaped structure.