CN215921993U

CN215921993U - Four-way adjustable lumbar support device

Info

Publication number: CN215921993U
Application number: CN202122314549.6U
Authority: CN
Inventors: 唐杰; 辛艺; 李伟
Original assignee: Chongqing Yanfeng Johnson Controls Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-01
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a four-way adjustable lumbar support device, which comprises a support component positioned in a backrest frame body, wherein the upper end of the support component is in running fit with the backrest frame body; the X-direction driving mechanism comprises a guy cable and a guy cable motor for controlling the guy cable to move, wherein the guy cable is supported at the lower end of the rear side of the supporting assembly, and the guy cable motor can drive the supporting assembly to move along the thickness direction of the backrest frame body when working; and the first tension spring and the second tension spring are respectively connected to two ends of the backrest frame body, and one ends, far away from the backrest frame body, of the first tension spring and one ends, far away from the backrest frame body, of the second tension spring are connected to the stay cables. The utility model has the beneficial effects that: the supporting component can float adaptively along with the thrust or dead weight of the back of a human body, and an elastic support is formed, so that the waist support is more comfortable compared with the traditional waist support.

Description

Four-way adjustable lumbar support device

Technical Field

The utility model relates to an automobile seat component, in particular to a four-way adjustable lumbar support device.

Background

With the development of automobile science and technology, the requirement of consumers on the riding comfort of automobile seats is higher and higher, and an important criterion for evaluating whether the seats are comfortable is to effectively relieve driving fatigue. In the design of a traditional seat, the seat cushion is usually only arranged and supported by a seat basin, and the backrest is supported by a backrest framework, so that the support performance of the seat structure on a human body is not fully considered, the waist of the human body is in a suspension posture, and the driver and passengers are easy to feel tired in the waist after sitting for a long time.

Therefore, a lumbar support technology applied to a seat also comes up, namely a so-called lumbar support, the lumbar support relieves the lumbar fatigue of drivers and passengers due to the suspension of the waist to a certain extent, and in the prior art, no matter the lumbar support is a fixed lumbar support or an adjustable lumbar support, the lumbar support is completely fixed relative to a backrest in the process of supporting the waist of a user and cannot float adaptively along with the self weight of the human body, so that the comfort is poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a four-way adjustable lumbar support device to solve the technical problem of poor comfort of the traditional adjustable lumbar support.

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

a lumbar support device with four-way adjustment is characterized by comprising:

a backrest frame;

the supporting assembly is positioned in the backrest frame body, the upper end of the supporting assembly is in running fit with the backrest frame body, and the supporting assembly comprises a supporting body and a Z-direction driving mechanism for driving the supporting body to move along the height direction of the backrest frame body;

the X-direction driving mechanism comprises a guy cable and a guy cable motor for controlling the guy cable to move, wherein the guy cable is supported at the lower end of the rear side of the supporting assembly, and the guy cable motor can drive the supporting assembly to move along the thickness direction of the backrest frame body when working; and

connect respectively first extension spring and second extension spring at back framework both ends, the one end that the back framework was kept away from to first extension spring and second extension spring is all connected on the cable.

By adopting the structure, the lower end of the supporting component is suspended and supported in the backrest frame body by the first tension spring and the second tension spring, and the upper end of the supporting component can rotate relative to the backrest frame body, so that when the waist of a user is supported on the supporting component, the supporting component can float adaptively along with the thrust or dead weight of the back of the human body, and an elastic support is formed, and the comfort is better. Meanwhile, under the action of the Z-direction driving mechanism and the X-direction driving mechanism, the supporting positions of the supporting component in the height direction and the front-back direction of the backrest can be adjusted, so that the backrest is suitable for users with different body types. The X-direction driving mechanism adopts a cable winding and unwinding mode to realize the front-back adjustment of the supporting component, and has the advantages of novel structure and convenience in adjustment.

Preferably, the method comprises the following steps: the pull cable is connected with a suspended guide sleeve and two groups of fixed guide sleeves which are in sliding fit with the pull cable, wherein the two groups of fixed guide sleeves are fixedly arranged at the lower end of the rear side of the supporting component, and one end, far away from the backrest frame body, of the first tension spring is hung on the suspended guide sleeve. Adopt above-mentioned structure, can guarantee that cable motor drive cable moves, can guarantee again that the both ends of cable are hung on the back framework by the spring, have that structural design is reasonable, the high technical advantage of reliability.

Preferably, the method comprises the following steps: the position that the back framework corresponds first extension spring and second extension spring has set firmly the piece of hanging, all be equipped with the connecting hole on the piece of hanging, be equipped with first string connection seat on the unsettled guide pin bushing, the one end that the cable kept away from the cable motor is equipped with the second and hangs the connection seat. Adopt above-mentioned structure to install first extension spring and second extension spring in convenient to.

Preferably, the method comprises the following steps: and a retaining rod is fixedly arranged between the two groups of fixed guide sleeves. By adopting the structure, the stability of the installation of the two groups of fixed guide sleeves at the lower end of the rear side of the supporting component can be ensured.

Preferably, the method comprises the following steps: the inhaul cable motor is fixedly assembled on the side portion of the backrest frame body, a first straight line hole and a second straight line hole which are perpendicular to each other are formed in the suspended guide sleeve, and an arc-shaped hole is connected between the first straight line hole and the second straight line hole in a transition mode. Adopt above-mentioned structure, can make the cable convert to transversely from vertical transition, be favorable to the cable assembly.

Preferably, the method comprises the following steps: the middle part of the backrest frame body is transversely provided with a spring steel wire, and the upper end of the supporting component is rotatably connected to the spring steel wire. By adopting the structure, the spring steel wire can also provide certain elastic supporting force, which is helpful for further improving the comfort of the lumbar support device.

Preferably, the method comprises the following steps: the supporting component is provided with two guide steel wires which are arranged along the height direction of the backrest frame body, the two guide steel wires are integrally connected between the lower ends of the guide steel wires, and the upper ends of the two guide steel wires are rotatably connected to the spring steel wires. By adopting the structure, the rotation assembly between the support component and the backrest frame body is realized.

Preferably, the method comprises the following steps: the two ends of the support body are assembled on the two guide steel wires in a sliding mode, the Z-direction driving mechanism comprises a screw rod, a nut sleeve and a motor, the nut sleeve is sleeved on the screw rod in a threaded mode, the motor is fixed on the support body, the upper end of the screw rod is connected to the spring steel wire in a hanging mode through a hook, and the lower end of the screw rod is fixedly connected to the transverse steel wire. By adopting the structure, the motor can drive the supporting body to move along the height direction of the backrest when working.

Preferably, the method comprises the following steps: the supporting component is provided with a supporting plate positioned at the front side of the supporting body, the supporting plate has elasticity, and the upper end of the supporting plate is rotatably connected to the spring steel wire. By adopting the structure, the waist of the driver and the passenger can be flexibly supported, and the waist fatigue caused by waist suspension or sedentariness can be relieved.

Preferably, the method comprises the following steps: the upper end of the supporting plate is provided with a hanging structure protruding backwards, the hanging structure is provided with a hanging groove with a downward opening, and the side part of the hanging groove is provided with an elastic clamping tongue. The structure is adopted, so that the assembly is convenient.

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

1. under the effect of first extension spring and second extension spring, the supporting component can carry out the adaptability along with the thrust or the dead weight of human back and float to form an elastic support, hold in the palm bearing structure for traditional waist, the travelling comfort is better.

2. The lumbar support device can be adjusted in the Z direction and the X direction, namely the support height and the front and rear support positions of the support component are adjustable, so that the use of users with different body types can be met, and the universality is good.

3. The X-direction adjustment of the lumbar support device adopts the traction drive of a guy cable, and the lumbar support device has the advantages of novel structure and convenience in adjustment.

4. The spring steel wire and the supporting plate on the front side of the supporting body are elastic members, so that flexible support can be formed for the waist of a user, and the comfort is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the lumbar support device shown with the back frame concealed (front view of the back);

FIG. 3 is a schematic view of the lumbar support device shown with the back frame concealed (back view);

fig. 4 is a cross-sectional view of a suspended guide sleeve.

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, a lumbar support device with four-direction adjustment comprises a backrest frame 1, a support assembly 2 is arranged inside the backrest frame 1, the support assembly 2 is used for supporting the waist of a user, a spring steel wire 8 is transversely arranged in the middle of the backrest frame 1, the upper end of the support assembly 2 is rotatably connected to the spring steel wire 8, an X-direction driving mechanism 3 is arranged inside the backrest frame 1, the X-direction driving mechanism 3 comprises a cable 3b and a cable motor 3a for controlling the movement of the cable 3b, wherein the cable 3b is supported at the lower end of the rear side of the support assembly 2, the backrest frame 1 is respectively connected with a first tension spring 4 and a second tension spring 5 at positions close to the two ends of the lower part of the support assembly 2, one ends of the first tension spring 4 and the second tension spring 5 far away from the backrest frame 1 are both connected to the cable 3b, after the product is assembled, the lower part of the support assembly 2 bears the cable 3b, the inhaul cable 3b is hung on the first tension spring 4 and the second tension spring 5, so the lower part of the supporting component 2 is hung inside the backrest frame body 1 by a spring, when the waist of a user is supported on the supporting component 2, the supporting component 2 can float adaptively along with the thrust or dead weight of the back of the human body, an elastic support is formed, and the comfort is better.

As shown in fig. 2 and 3 again, be connected with all rather than the unsettled guide pin bushing 3c of sliding fit and two sets of fixed guide pin bushings 3d on the cable 3b, two sets of fixed guide pin bushing 3d fixed mounting are at the rear side lower extreme of supporting component 2, the position that the back framework 1 corresponds first extension spring 4 and second extension spring 5 has set firmly the joint piece 6, all be equipped with connecting hole 6a on the joint piece 6, be equipped with first articulate seat 3f on the unsettled guide pin bushing 3c, the one end that cable 3b kept away from cable motor 3a is equipped with

second articulate seat

3e, 4 one end articulates on first articulate seat 3f of first extension spring, the other end articulates on corresponding

articulate piece

6, 5 one end of second extension spring articulates on second articulate seat 3e, the other end articulates on corresponding articulate piece 6, so design, can adjust the support position of lumbar support device in back thickness direction, namely: the cable motor 3a works to drive the cable 3b to contract or release, so that the support component 2 moves along the thickness direction of the backrest. In this embodiment, the cable motor 3a is an existing mature component, and the working principle thereof is not further described herein.

As shown in fig. 1 and 4, the cable motor 3a is fixedly mounted on a side portion of the backrest frame 1, and in order to convert the cable 3b from a vertical direction to a horizontal direction, a first linear hole a and a second linear hole b perpendicular to each other are provided in the suspension guide sleeve 3c, and an arc hole c is transitionally connected between the first linear hole a and the second linear hole b.

As shown in fig. 2 and 3, the embodiment provides an implementation structure for rotationally connecting the support component 2 and the spring steel wire 8, specifically: the supporting component 2 is provided with two guide steel wires 2c which are all arranged along the height direction of the backrest frame body 1, a transverse steel wire 2d is integrally connected between the lower ends of the two guide steel wires 2c, and the upper ends of the two guide steel wires 2c are all rotatably connected on the spring steel wire 8.

In order to adjust the lumbar support device in the Z direction, the support assembly 2 is internally provided with a support body 2a and a Z-direction driving mechanism 2b, wherein two ends of the rear side of the support body 2a are slidably assembled on the two guide steel wires 2c, the Z-direction driving mechanism 2b comprises a screw rod 2b1, a nut sleeve 2b2 which is sleeved on the screw rod 2b1 in a threaded manner, and a motor 2b3 which drives the nut sleeve 2b2 to rotate, the motor 2b3 is fixed on the rear side of the support body 2a, the upper end and the lower end of the screw rod 2b1 are respectively connected to the spring steel wire 8 and the transverse steel wire 2d, and based on the structural arrangement, the motor 2b3 works to drive the support body 2a to move along the height direction of the backrest, so as to realize the Z-direction adjustment of the lumbar support device.

In order to ensure the working reliability of the Z-direction driving mechanism 2b, when the supporting body 2a moves up and down, the screw rod 2b1 should be kept in a non-rotating state, and meanwhile, because the supporting component 2 provided by the embodiment needs to rotate relative to the spring steel wire 8, in the embodiment, the upper end of the screw rod 2b1 is hung on the spring steel wire 8 through a hook d, and the lower end is fixedly connected to the transverse steel wire 2 d.

As shown in fig. 2 and 3, a support plate 2e is disposed at the front side of the support body 2a, the support plate 2e has elasticity, the upper end of the support plate is rotatably connected to the spring wire 8, the lower end of the support plate 2e is not limited, when the Z-direction driving mechanism 2b works, the front side of the support body 2a slides relative to the rear surface of the support plate 2e, the area of the support plate 2e is larger than that of the support body 2a, and the support plate 2e can flexibly support the waist of the driver and the passenger due to the elasticity, so that the comfort is better.

For the convenience of assembly, the upper end of the supporting plate 2e is provided with a hanging structure 2f protruding backwards, the hanging structure 2f is provided with a hanging groove 2f1 with a downward opening, the side part of the hanging groove 2f1 is provided with an elastic clamping tongue 2f2, and after the hanging groove 2f1 is hung on the spring steel wire 8, the elastic clamping tongue 2f2 can prevent the supporting plate 2e from falling off.

As shown in fig. 3, a holding rod 7 is fixedly connected between the two sets of fixing guide sleeves 3d to ensure the stability of the installation of the two sets of fixing guide sleeves 3d at the lower end of the rear side of the support assembly 2.

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 four-way adjustable lumbar support device, comprising:

a backrest frame (1);

the support assembly (2) is positioned inside the backrest frame body (1), the upper end of the support assembly (2) is in running fit with the backrest frame body (1), and the support assembly (2) comprises a support body (2a) and a Z-direction driving mechanism (2b) for driving the support body (2a) to move along the height direction of the backrest frame body (1);

the X-direction driving mechanism (3) comprises a guy cable (3b) and a guy cable motor (3a) for controlling the guy cable (3b) to move, wherein the guy cable (3b) is supported at the lower end of the rear side of the supporting component (2), and the guy cable motor (3a) can drive the supporting component (2) to move along the thickness direction of the backrest frame body (1) in a working mode; and

connect respectively first extension spring (4) and second extension spring (5) at back framework (1) both ends, the one end that back framework (1) was kept away from in first extension spring (4) and second extension spring (5) all connects on cable (3 b).

2. The four-way adjustable lumbar support device of claim 1, wherein: the pull cable (3b) is connected with a suspended guide sleeve (3c) and two groups of fixed guide sleeves (3d) which are matched with the pull cable in a sliding mode, the fixed guide sleeves (3d) are fixedly installed at the lower end of the rear side of the supporting component (2), and one end, away from the backrest frame body (1), of the first tension spring (4) is hung on the suspended guide sleeve (3 c).

3. The four-way adjustable lumbar support device of claim 2, wherein: the utility model discloses a chair backrest, including backrest frame body (1), first extension spring (4) and second extension spring (5), hanging piece (6) have set firmly in the position that corresponds back frame body (1), all be equipped with connecting hole (6a) on hanging piece (6), be equipped with first articulate seat (3f) on unsettled guide pin bushing (3c), the one end that cable motor (3a) were kept away from in cable (3b) is equipped with second articulate seat (3 e).

4. The four-way adjustable lumbar support device of claim 2, wherein: a retaining rod (7) is fixedly arranged between the two groups of fixed guide sleeves (3 d).

5. The four-way adjustable lumbar support device of claim 2, wherein: the inhaul cable motor (3a) is fixedly assembled on the side portion of the backrest frame body (1), a first straight line hole (a) and a second straight line hole (b) which are perpendicular to each other are formed in the suspended guide sleeve (3c), and an arc-shaped hole (c) is in transitional connection between the first straight line hole (a) and the second straight line hole (b).

6. The four-way adjustable lumbar support device of claim 1, wherein: the middle part of the backrest frame body (1) is transversely provided with a spring steel wire (8), and the upper end of the supporting component (2) is rotatably connected onto the spring steel wire (8).

7. The four-way adjustable lumbar support device of claim 6, wherein: the supporting component (2) is provided with two guide steel wires (2c) which are all arranged along the height direction of the backrest frame body (1), the two guide steel wires (2c) are integrally connected with a transverse steel wire (2d) between the lower ends of the two guide steel wires (2c), and the upper ends of the two guide steel wires (2c) are all rotatably connected to the spring steel wire (8).

8. The four-way adjustable lumbar support device of claim 7, wherein: the two ends of the support body (2a) are assembled on the two guide steel wires (2c) in a sliding mode, the Z-direction driving mechanism (2b) comprises a screw rod (2b1), a nut sleeve (2b2) which is sleeved on the screw rod (2b1) in a threaded mode, and a motor (2b3) which drives the nut sleeve (2b2) to rotate, the motor (2b3) is fixed on the support body (2a), the upper end of the screw rod (2b1) is connected to the spring steel wire (8) in a hanging mode through a hook (d), and the lower end of the screw rod is fixedly connected to the transverse steel wire (2 d).

9. The four-way adjustable lumbar support device of claim 6, wherein: the supporting component (2) is provided with a supporting plate (2e) positioned at the front side of the supporting body (2a), the supporting plate (2e) has elasticity, and the upper end of the supporting plate is rotatably connected to the spring steel wire (8).

10. The four-way adjustable lumbar support device of claim 9, wherein: the upper end of the supporting plate (2e) is provided with a hanging structure (2f) protruding backwards, the hanging structure (2f) is provided with a hanging groove (2f1) with a downward opening, and the side part of the hanging groove (2f1) is provided with an elastic clamping tongue (2f 2).