CN113602163A

CN113602163A - Automobile seat caudal vertebra supporting structure

Info

Publication number: CN113602163A
Application number: CN202111086597.2A
Authority: CN
Inventors: 辛艺; 李伟; 唐杰; 贾伟
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: 2021-11-05

Abstract

The invention discloses a vehicle seat caudal vertebra supporting structure, comprising: a backrest; a support member provided at a lower end of the backrest, the support member being capable of correspondingly supporting a coccyx region of an occupant; a linkage mechanism installed between the support member and the backrest for restricting the support member to be moved up and down in a thickness direction of the backrest; and the driving mechanism is used for driving the linkage mechanism to execute actions. The invention has the beneficial effects that: the driving mechanism drives the supporting component to protrude forwards at the lower end of the backrest, so that the supporting component can be supported at the caudal vertebra part of a user, and the comfort of the seat is improved.

Description

Automobile seat caudal vertebra supporting structure

Technical Field

The invention relates to the technical field of automobile seats, in particular to an automobile seat caudal vertebra supporting structure.

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.

Although the prior automobile seat has made remarkable technical progress in terms of hip comfort support and lumbar comfort support, after a user sits on the seat, the region between the waist and the hip (hip joint and coccyx) is still in an unsupported state, and if the region is in a suspended posture for a long time, the user feels tired after sitting for a long time, and the comfort needs to be improved. In the existing seat structure design, the research on the supporting structures of hip joints, coccygeal vertebrae and other parts is almost blank.

Disclosure of Invention

In view of the above, the present invention provides a seat back support structure for a vehicle, which can support a back portion of a user in a lifting manner.

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

the utility model provides a car seat caudal vertebra bearing structure which key its lies in, includes:

a backrest;

a support member provided at a lower end of the backrest, the support member being capable of correspondingly supporting a coccyx region of an occupant;

a linkage mechanism installed between the support member and the backrest for restricting the support member to be moved up and down in a thickness direction of the backrest; and

and the driving mechanism is used for driving the linkage mechanism to execute actions.

Adopt above-mentioned structure, actuating mechanism starts the back, can drive the supporting component forward motion under link gear's effect for the supporting component supports at user's caudal vertebra position, promptly: the area between the buttocks and the waist contributes to the improvement of the seat comfort.

Preferably, the method comprises the following steps: the backrest is provided with a support plate corresponding to the rear side of the support component, the linkage mechanism comprises a first moving block, a first connecting piece, a second connecting piece, a third connecting piece, a fixing block, a fourth connecting piece, a fifth connecting piece, a sixth connecting piece and a second moving block which are hinged in sequence, the second connecting piece and the fifth connecting piece are installed on the rear side of the support component in a sliding mode, the fixing block is fixedly installed in the middle of the support plate, and the first moving block and the second moving block can slide in opposite directions at two ends of the support plate. By adopting the structure, the first motion block and the second motion block slide towards opposite directions to drive the supporting component to do lifting motion.

Preferably, the method comprises the following steps: the driving mechanism comprises a motor, a gear box and a screw rod which are sequentially connected in a power mode, wherein the screw rod is arranged along the width direction of the backrest, the first motion block and the second motion block are connected to the screw rod in a threaded sleeve mode, and the screw thread turning direction of the screw rod corresponding to the position of the first motion block is opposite to the screw thread turning direction of the screw rod corresponding to the position of the second motion block. By adopting the structure, the motor drives the screw rod to rotate, and the first motion block and the second motion block can move towards opposite directions on the screw rod by the rotation of the screw rod.

Preferably, the method comprises the following steps: the support plate is characterized in that one end of the support plate is provided with a flange extending towards the direction of the support component, the other end of the support plate is provided with a support platform extending towards the direction of the side part of the backrest, the flange is provided with a bearing hole, the gear box is fixedly arranged on the support platform, one end of the screw rod is connected in the gear box, and the other end of the screw rod is rotatably arranged in the bearing hole. Adopt above-mentioned structure to the installation screw rod is rotated in the convenience.

Preferably, the method comprises the following steps: the support component all is equipped with the push pedal corresponding to the position of second connection piece and fifth connection piece, is equipped with the bar hole in the push pedal, all through rivet hinge between second connection piece and first connection piece and the third connection piece to and between fifth connection piece and fourth connection piece and the sixth connection piece, each the middle part sliding support of rivet is downthehole at the bar that corresponds the push pedal. By adopting the structure, when the linkage mechanism works, the second connecting piece and the fifth connecting piece can be ensured to slide relative to the supporting part, and the running reliability of the mechanism is ensured.

Preferably, the method comprises the following steps: the supporting part is of an arc-shaped plate structure, a positioning lug is arranged on the rear side of the supporting part, a connecting groove is formed in the positioning lug, and an inserting piece matched with the connecting groove is arranged at the end of the push plate. The structure is adopted, so that the assembly is convenient.

Preferably, the method comprises the following steps: the back side of the supporting component is symmetrically provided with two groups of linkage mechanisms, and the two groups of linkage mechanisms are distributed along the height direction of the backrest. By adopting the structure, the stress distribution can be ensured to be uniform, and the supporting reliability is improved.

Preferably, the method comprises the following steps: the lower end of the backrest is provided with a rotating shaft extending along the width direction of the backrest, and the rotating shaft is positioned between the two groups of linkage mechanisms. By adopting the installation mode, the rotating shaft can be avoided, so that the structure of the seat backrest is more compact.

Compared with the prior art, the invention has the beneficial effects that:

1. the motor-driven support member protrudes forward at the lower end of the backrest so that the support member can be supported at the caudal vertebra of a user, contributing to improving the comfort of the seat.

2. The structure sets up rationally, and each mechanism operation is reliable, on the basis that does not change current seat skeleton, can realize the modularization assembly, has technical advantage such as cost controllable, market perspective is wide.

3. The linkage mechanism forms symmetrical support for the support component in the width direction and the height direction of the backrest, the uniformity of stress distribution is good, and the support component has better support comfort for users.

Drawings

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

FIG. 2 is a cross-sectional view of a vehicle seat;

FIG. 3 is a partial schematic view of a seat reflecting a caudal vertebra support structure;

FIG. 4 is an exploded view of a reflective caudal vertebral support structure;

FIG. 5 is a schematic structural view of the support member;

FIG. 6 is a schematic structural view of a push plate;

fig. 7 is a schematic structural view of the bracket plate.

Detailed Description

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

As shown in fig. 1 to 3, in an automobile seat, a backrest 1 is rotatably installed at the rear end of a seat frame 5 by using a rotating shaft 12 as a rotation fulcrum, a supporting member 3 is arranged at the lower end of the backrest 1, the supporting member 3 is of an arc-shaped plate structure, the supporting member 3 extends along the width direction of the backrest 1, a bracket plate 11 is fixedly installed at the position of the backrest 1 corresponding to the rear side of the supporting member 3, a linkage mechanism 2 is installed between the supporting member 3 and the bracket plate 11, the linkage mechanism 2 is used for restricting the lifting movement of the supporting member 3 along the thickness direction of the backrest 1, a driving mechanism 4 is further installed in the backrest 1, and after the driving mechanism 4 is started, the linkage mechanism 2 performs an action, so as to drive the supporting member 3 to move forward, and the supporting member 3 is supported at the caudal vertebra of a user.

As shown in fig. 4, the linkage mechanism 2 includes a first moving block 21, a first connecting plate 22, a second connecting plate 23, a third connecting plate 24, a fixing block 25, a fourth connecting plate 26, a fifth connecting plate 27, a sixth connecting plate 28 and a second moving block 29, which are hinged in sequence, wherein the second connecting plate 23 and the fifth connecting plate 27 are located on the same straight line, and both are slidably mounted on the rear side of the supporting member 3, the first moving block 21, the fixing block 25 and the second moving block 29 are also located on the same straight line, the fixing block 25 is fixedly mounted in the middle of the supporting plate 11, the first moving block 21 and the second moving block 29 are located at both ends of the supporting plate 11, and the first moving block 21 and the second moving block 29 can slide in opposite directions at both ends of the supporting plate 11, based on the structural layout of the linkage mechanism 2, when both the first moving block 21 and the second moving block 29 slide in a direction close to the fixing block 25, the linkage mechanism 2 will drive the supporting component 3 to move forward relative to the backrest 1, so as to support the caudal vertebra of the user, and when the first moving block 21 and the second moving block 29 both slide in the direction away from the fixed block 25, the linkage mechanism 2 will drive the supporting component 3 to move back, so as to complete the mechanism folding.

In order to simultaneously drive the first motion block 21 and the second motion block 29 to slide in opposite directions, in this embodiment, the driving mechanism 4 includes a motor 41, a flexible shaft 44, a gear box 42, and a screw 43, which are sequentially and dynamically connected, wherein the screw 43 is disposed along the width direction of the backrest 1, both the first motion block 21 and the second motion block 29 are connected to the screw 43 in a threaded sleeve manner, the thread direction of the screw 43 corresponding to the position of the first motion block 21 is opposite to the thread direction corresponding to the position of the second motion block 29, the motor 41 drives the screw 43 to rotate, and the screw 43 rotates to drive the first motion block 21 and the second motion block 29 to move in opposite directions on the screw 43.

Further, as shown in fig. 4 and 7, in order to facilitate assembling of the components of the driving mechanism 4, one end of the supporting plate 11 is provided with a flange 111 extending toward the supporting component 3, the other end of the supporting plate is provided with a supporting platform 112 extending toward the side of the backrest 1, the flange 111 is provided with a supporting hole 113, the motor 41 is fixed on the side of the backrest 1, the gear box 42 is fixedly arranged on the supporting platform 112, one end of the screw 43 is connected in the gear box 42, and the other end of the screw 43 is rotatably installed in the supporting hole 113. The power transmission relationship of the driving mechanism 4 is as follows: motor 41 → flexible shaft 44 → gear box 42 → screw 43.

As shown in fig. 5 and 6, in order to realize the sliding connection between the second connecting piece 23 and the fifth connecting piece 27 and the supporting member 3, the supporting member 3 is provided with a push plate 31 at positions corresponding to the second connecting piece 23 and the fifth connecting piece 27, the push plate 31 is provided with a strip-shaped hole 32, the space between the second connecting piece 23 and the first connecting piece 22, the space between the second connecting piece 23 and the third connecting piece 24, the space between the fifth connecting piece 27 and the fourth connecting piece 26, and the space between the fifth connecting piece 27 and the sixth connecting piece 28 are all hinged by rivets 20, the middle part of each rivet 20 is slidably supported in the strip-shaped hole 32 corresponding to the push plate 31, and when the linkage mechanism 2 performs an action, the rivet 20 slides along the strip-shaped hole 32, that is, the second connecting piece 23 and the fifth connecting piece 27 slide along the corresponding strip-shaped hole 32.

Further, in order to facilitate the assembly of the supporting member 3 and the pushing plate 31, a positioning protrusion 33 is provided at the rear side of the supporting member 3, a connecting groove 34 is provided on the positioning protrusion 33, and an insertion piece 35 adapted to the connecting groove 34 is provided at the end of the pushing plate 31.

In this embodiment, the number of the link mechanisms 2 is two, and the two sets of link mechanisms 2 are symmetrically distributed at the rear side of the supporting part 3 along the height direction of the backrest 1, so that the design can ensure that the stress distribution is uniform, and the supporting reliability is improved. The first connecting piece 22, the third connecting piece 24, the fourth connecting piece 26 and the sixth connecting piece 28 of the two groups of linkage mechanisms 2 share one set of the first moving block 21, the fixed block 25 and the second moving block 29, and the first connecting piece 22, the third connecting piece 24, the fourth connecting piece 26 and the sixth connecting piece 28 of the two groups of linkage mechanisms 2 are symmetrically connected to two sides of the corresponding first moving block 21, the fixed block 25 and the second moving block 29.

As shown in fig. 2, the rotary shaft 12 at the lower end of the backrest 1 is inserted between the two sets of the link mechanisms 2 in order to avoid the rotary shaft 12 and to make the structure of the seat back 1 more compact.

The linkage mechanism 2 may directly employ a fork lift mechanism in addition to the embodiment provided in the present embodiment.

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. A car seat caudal vertebra bearing structure, comprising:

a backrest (1);

a support component (3) arranged at the lower end of the backrest (1), wherein the support component (3) can correspondingly support the caudal vertebra region of the passenger;

the linkage mechanism (2) is arranged between the support component (3) and the backrest (1) and used for limiting the lifting motion of the support component (3) along the thickness direction of the backrest (1); and

and the driving mechanism (4) is used for driving the linkage mechanism (2) to perform actions.

2. The vehicle seat caudal vertebra support structure of claim 1, wherein: the utility model discloses a chair backrest, including backrest, supporting part (3), link mechanism (2), first motion piece (21), first connection piece (22), second connection piece (23), third connection piece (24), fixed block (25), fourth connection piece (26), fifth connection piece (27), sixth connection piece (28) and second motion piece (29), wherein, equal slidable mounting in supporting part (3) rear side of second connection piece (23) and fifth connection piece (27), fixed block (25) fixed mounting is in the middle part of supporting part (11), and first motion piece (21) and second motion piece (29) can slide towards opposite direction at the both ends of supporting part (11).

3. The vehicle seat caudal vertebra support structure of claim 2, wherein: the driving mechanism (4) comprises a motor (41), a gear box (42) and a screw rod (43) which are sequentially connected in a power mode, wherein the screw rod (43) is arranged along the width direction of the backrest (1), the first moving block (21) and the second moving block (29) are connected to the screw rod (43) in a threaded sleeve mode, and the thread turning direction of the screw rod (43) corresponding to the position of the first moving block (21) is opposite to the thread turning direction of the screw rod corresponding to the position of the second moving block (29).

4. The vehicle seat caudal vertebra support structure of claim 3, wherein: one end of the support plate (11) is provided with a flanging (111) extending towards the direction of the support component (3), the other end of the support plate is provided with a support platform (112) extending towards the direction of the side part of the backrest (1), the flanging (111) is provided with a bearing hole (113), the gear box (42) is fixedly arranged on the support platform (112), one end of the screw rod (43) is connected into the gear box (42), and the other end of the screw rod is rotatably arranged in the bearing hole (113).

5. The vehicle seat caudal vertebra support structure of claim 2, wherein: the position that supporting component (3) corresponds second connection piece (23) and fifth connection piece (27) all is equipped with push pedal (31), is equipped with bar hole (32) on push pedal (31), between second connection piece (23) and first connection piece (22) and third connection piece (24) to and all articulated through rivet (20) between fifth connection piece (27) and fourth connection piece (26) and sixth connection piece (28), each the middle part sliding support of rivet (20) is in bar hole (32) that correspond push pedal (31).

6. The vehicle seat caudal vertebra support structure of claim 5, wherein: the supporting part (3) is of an arc-shaped plate-shaped structure, a positioning lug (33) is arranged on the rear side of the supporting part, a connecting groove (34) is arranged on the positioning lug (33), and an inserting piece (35) matched with the connecting groove (34) is arranged at the end part of the push plate (31).

7. The vehicle seat caudal vertebra support structure of claim 2, wherein: the rear side of the supporting part (3) is symmetrically provided with two groups of linkage mechanisms (2), and the two groups of linkage mechanisms (2) are distributed along the height direction of the backrest (1).

8. The vehicle seat caudal vertebra support structure of claim 7, wherein: the lower end of the backrest (1) is provided with a rotating shaft (12) extending along the width direction of the backrest, and the rotating shaft (12) is positioned between the two groups of linkage mechanisms (2).

9. The vehicle seat caudal vertebra support structure of claim 4, wherein: the motor (41) is fixed on the side of the backrest (1), and the motor (41) is in power connection with the gear box (42) through a flexible shaft (44).

10. The vehicle seat caudal vertebra support structure of claim 1, wherein: the linkage mechanism (2) is a fork type lifting mechanism.