KR101220939B1 - Lumbar support assembly - Google Patents

Abstract

The present invention relates to a lumber support, and according to a preferred embodiment of the present invention, in a lumber support assembly installed on a seatback frame inside an automobile seat to support a vertebrae and a back part of the occupant, installed inside the seatback frame. The support member is installed at the rear of the support member, and the U-shaped guide bar hinged to the upper end of the support member, and a pair of fixed brackets respectively coupled to the upper and lower sides of the guide bar. And a screw bar having both ends coupled to the pair of fixing brackets, the screw bars being symmetrically formed on the outer circumferential surface of the screw bar with respect to the center in the longitudinal direction, and a second coupling part protruding from the screw bar formed on the screw bar in the center thereof. Screwed to face each other with respect to the center, and follow the guide bar when the screw bar is rotated A pair of moving brackets are formed on both sides of the second guide grooves supported by the guide bars so as to slide in opposite directions, and one end is hinged to the fixed bracket, and the other end is respectively supported by the moving brackets. A lumber support assembly is provided that includes at least one pivoting wire that rotates in the direction of the support member when the bracket is moved.

Description

Lumber support assembly {LUMBAR SUPPORT ASSEMBLY}

The present invention relates to a lumber support, and more particularly, to a lumber support assembly installed inside a seat back of a vehicle to support the spine and the back of the occupant.

Seats are installed inside the vehicle to allow passengers to sit.These seats are seat cushions that support the hips of the passengers, seatbacks that support the back, armrests that can put the arms of the passengers, and headrests that support the heads. Is made of.

Looking in detail the seatback associated with the present invention, a seatback frame serving as a skeleton of the seatback is installed inside the seatback, a lumber support assembly for supporting the back of the passenger is installed inside the seatback frame.

At this time, the lumber support assembly has a variable structure so as to fit the spine shape of the occupant in order to reduce the fatigue of the occupant during vehicle operation.

Looking at the conventional variable lumber support assembly, after forming a protrusion on the rotating rod is coupled to the seat back frame, the support rod for supporting the waist of the occupant is installed on the protrusion, the rotating rod is rotated according to the position of the occupant sitting on the seat The support member is moved forward and backward of the seat back frame to support the occupant's waist.

However, such a conventional lumber support structure has a high failure rate due to assembly and manufacture by a large number of parts, requires a lot of manufacturing cost and time, and vibration and shock generated by road conditions or traffic conditions while driving a vehicle. As it is transmitted to the waist of the occupant through the protrusion, the occupant easily feels tired or there is a risk of injury.

The present invention is to solve the above problems, an embodiment of the present invention is installed in the seat back frame inside the car seat in the lumber support assembly for supporting the spine and back of the occupant, the interior of the seat back frame A support member to be installed; It is installed at the rear of the support member, the guide bar of the 'U' shaped hinge is coupled to the upper end of the upper support member; A pair of fixing brackets coupled to the upper side and the lower side of the guide bar, respectively; A screw bar having both ends coupled to a pair of fixing brackets; A pair of moving brackets which are screwed to the screw bars and slides in opposite directions along the guide bars when the screw bars are rotated; And at least one pivoting wire, one end of which is hinged to the fixing bracket, the other end of which is supported by the moving bracket, and which rotates in the direction of the support member during the movement of the moving bracket.

According to a preferred embodiment of the present invention, in the lumber support assembly installed on the seat back frame inside the vehicle seat to support the spine and the back of the occupant, a support member installed inside the seat back frame and the support member Installed in the rear, the U-shaped guide bar is hinged to the upper end of the support member, a pair of fixing brackets respectively coupled to the upper and lower side of the guide bar, and the pair of fixing brackets Both ends are coupled to each other, the screw bar is formed on the outer circumferential surface of the screw bar symmetrically with respect to the center in the longitudinal direction, and the second coupling portion protruded in the center on the screw thread formed on the screw bar, respectively, facing each other with respect to the center of the screw bar Coupled and slides in opposite directions along the guide bar when the screw bar is rotated. A pair of moving brackets formed at both sides of the second guide grooves supported by the guide bar are hingedly coupled to the fixed brackets, and the other ends of the second guide grooves are supported by the moving brackets, so that the support member moves when the moving brackets are moved. A lumber support assembly is provided that includes at least one pivoting wire that rotates in a direction.

Here, the pair of fixing brackets, the upper fixing bracket is coupled across the guide bar on the upper side of the guide bar, and the lower fixing bracket is coupled across the guide bar on the lower side of the guide bar.

In addition, the pair of moving brackets, the lower end of the upper fixed bracket to be movable along the guide bar coupled to the upper movement bracket, and the lower portion of the upper movement bracket is coupled to the lower movable bracket to be movable along the guide bar.

At this time, the fixing bracket, the first coupling portion to which the screw bar is coupled protrudes in the center, the first guide portion for supporting the guide bar is formed on both sides, the first guide groove for receiving the guide bar on one side of the first guide portion It is formed, the other side of the first guide portion is formed with a coupling groove is hinged rotational wire.

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At this time, a curved portion curved in the direction of the support member is formed on one side of the rotating wire.

In addition, one side of the guide bar is provided with a coupling bracket for coupling the guide bar to the seat frame, the drive motor is coupled to the lower end of the guide bar, the screw bar is axially rotated by the operation of the drive motor.

According to the lumber support assembly according to an embodiment of the present invention, the degree of protrusion of the lumber support can be properly adjusted according to the physical condition of the occupant, and the vibration and shock applied to the lumber support while driving the vehicle are prevented from injuring the occupant. It is effective to provide a comfortable driving environment.

In addition, the lightweight synthetic resin material is applied to help reduce the weight of the vehicle, and the structure is simple, thereby improving the price competitiveness by reducing the production cost and time.

1 is a perspective view of a lumber support assembly according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
Figure 3 is a rear view of the lumber support assembly according to an embodiment of the present invention.
Figure 4 is an operating state of the lumber support assembly according to an embodiment of the present invention.
5 is a state in which the lumber support assembly according to an embodiment of the present invention is installed in the seat back frame.

Hereinafter, a lumber support assembly according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

Example

1 is a perspective view of a lumber support assembly according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a rear view of the lumber support assembly according to an embodiment of the present invention.

As shown in Figures 1 to 3, the lumber support assembly 10 according to an embodiment of the present invention, is installed in the seat back frame (1, 5) inside the car seat to the back and back of the occupant The support member 20 is installed in the seat back frame 1 to support the spine and the back of the occupant, and the upper end of the support member 20 is hinged to the rear of the support member 20. Both ends are provided with a guide bar 30 having a U-shaped guide bar, a pair of fixing brackets 50 coupled to upper and lower sides of the guide bar 30, and a pair of fixing brackets 50, respectively. A screw bar 60 coupled to each other, a pair of moving brackets 70 screwed to the screw bar 60 to slide in opposite directions along the guide bar 30 when the screw bar 60 rotates, One end is hinged to the fixing bracket 50 and the other end is supported by the moving bracket 70, respectively In this case, the moving bracket 70 includes at least one rotation wire 80 which rotates in the direction of the support member 20.

Here, the seatback frame 1 is installed inside the seatback of the automobile seat to maintain the shape of the seatback, and is connected to the seat cushion to support the load of the occupant, and is formed in a shape corresponding to the outer shape of the seatback.

In addition, the support member 20 supports the spine and the back of the vehicle occupant, and may be made of a synthetic resin material or a thin metal material. The support member 20 is formed to be symmetrically about the center and has a plurality of side wings 21 on both sides. ) Is formed to be spaced apart from each other in the longitudinal direction of the support member 20, wherein the central portion is slightly concave in the longitudinal direction corresponding to the shape of the vertebrae of the occupant, and each side wing 21 is slightly inclined forward It is preferable to be formed in a form surrounding the back portion, the front end portion of the side wing 21 is preferably formed by slightly bending in the opposite direction in order to prevent injury of the occupant or damage of the side wing 21.

In addition, fitting portions 22 are formed on both upper sides of the support member 20 so that both upper ends of the guide bars 30 to be described later may be pivotably coupled to each other.

Guide bar 30 is made of a 'U' shape of the wire is bent in a predetermined thickness as a whole open top, is coupled to the seat back frame (1), the open ends of the guide bar 30, the ends of each other The bending portion 31 is bent inward to face each other, and the closed lower end of the guide bar 30 is bent backward to be coupled to the seatback frame 1 by a clip (not shown).

Here, the bent portion 31 of the guide bar 30 is pivotally coupled to the fitting portion 22 of the support member 20 described above, so that the support member 20 is directed toward the occupant about the fitting portion 22. It is possible to rotate back and forth.

On the other hand, on both sides of the guide bar 30 are inclined portions 32 which are inclined forward at the heights facing each other, respectively, the coupling bracket 40 across the guide bar 30 below the inclined portion 32 ) Is coupled to the lower end of the coupling bracket 40 is formed to be spaced apart from each other at least one fastening portion 41 is projected to the rear and having a fastening hole 411, the fastening portion 41 is a seat back frame (1) One side of the) is coupled by fasteners such as bolts.

On the other hand, a pair of fixing bracket 50 is coupled to the upper side and the lower side of the guide bar 30, the upper fixing bracket 51 is coupled to the upper side of the guide bar 30 across the guide bar 30 The lower fixing bracket 52 is coupled across the guide bar 30 at a lower side of the guide bar 30, and a screw bar having a thread formed on an outer circumferential surface between the upper fixing bracket 51 and the lower fixing bracket 52. 60 is installed vertically.

At this time, the fixing bracket 50 has a rectangular parallelepiped shape as a whole, and the upper fixing bracket 51 and the lower fixing bracket 52 are installed to face each other in a symmetrical shape, and the lower fixing bracket 51 will be described as an example. The first coupling part 511 to which the upper end of the screw bar 60 is coupled is protruded downward in the center part, and the first guide part 512 is protruded downward in both sides.

In addition, a coupling groove (not shown) is formed on the front surface of the first guide part 512 in a horizontal direction so that the opening of the pivoting wire 80 to be described later is fitted into the hinge, and on the rear surface of the first guide part 512. The first guide groove 513 is formed in the longitudinal direction so that one side of the guide bar 30 is fitted therein.

A pair of moving brackets 70 are installed between the pair of fixing brackets 50 and slide in the opposite directions along the guide bar 30 when the screw bar 60 is rotated.

Here, the pair of moving brackets 70 are spaced apart from the lower end of the upper fixing bracket 51, the upper movable bracket 71 and the upper movable bracket 71 are slidably coupled along the guide bar 30. The bottom of the movement bracket 72 is coupled to be slidably moved along the guide bar 30 to the bottom of the.

At this time, the moving bracket 70 is a rectangular parallelepiped shape as a whole, and the upper movable bracket 71 and the lower movable bracket 72 are installed to face each other in a symmetrical shape, and the upper movable bracket 71 will be described as an example. The second coupling portion 711 is screwed to the screw bar 60 and the center portion is formed to protrude, the second guide groove 712 is formed in the longitudinal direction so that one side of the guide bar 30 is accommodated on both sides of the rear.

At this time, when the screw bar 60 is rotated, the upper movement bracket 71 and the lower movement bracket 72 slide in opposite directions to each other, and for this purpose, the threads of the screw bar 60 move upward and downward relative to the center in the longitudinal direction. It is preferably formed symmetrically.

Here, it is preferable that the fixing bracket 50 and the moving bracket 70 are made of a light synthetic resin material to help reduce the weight of the vehicle.

At least one rotating wire 80 is installed between the upper fixing bracket 51 and the upper movable bracket 71, and the lower fixing bracket 52 and the lower movable bracket 72. Hereinafter, the upper fixing bracket 51 and An embodiment of the rotational wire 80 interposed on the upper end movement bracket 71 will be described. The rotational wire 80 interposed on the lower fixing bracket 52 and the lower end movement bracket 72 will be described below. It turns out in advance that it is a shape which is symmetrical with the rotating wire 80 demonstrated.

Rotating wire 80 is an 'U' shape of the upper portion is open, the upper ends of both sides are bent to be coupled to the coupling groove (not shown) of the upper fixing bracket 51, the closed lower end of the upper movable bracket (71) ) Is supported on one side of the front side.

At this time, the lower portion of the rotating wire 80 is formed a curved portion 81 of the arc shape curved in the support member 20 direction, the curved portion 81 is supported on the back surface of the support member (20).

In addition, a lower portion of the lower fixing bracket 52 is coupled to the driving motor coupling portion 90, the driving motor 91 is connected to the gear box 92 and coupled to the driving motor coupling portion 90 by a bracket, It is installed at the bottom of the guide bar (30).

At this time, the lower end of the screw bar 60 is coupled to the gear box 92, so that the rotational force of the drive motor 91 is transmitted to the screw bar 60 via the gear box 92 when the driving motor 91 is operated. The screw bar 60 is to be rotated.

Figure 4 is an operating state diagram of the lumber support assembly according to an embodiment of the present invention, Figure 5 is a state diagram showing a state in which the lumber support assembly is installed in the seat back frame according to an embodiment of the present invention.

Looking at the operation of the lumber support assembly according to an embodiment of the present invention.

When the occupant rotates the screw bar 60 in one direction by operating the driving motor 91, the upper fixing bracket 51 and the lower fixing bracket 52 are fixed, and the upper movable bracket 71 is fixed at the upper end. The bracket 51 moves in the direction, and the lower end movement bracket 72 moves in the lower fixed bracket 52 direction.

Accordingly, as shown in FIGS. 4A and 4B, the pivoting wire 80 is pushed and rotated by the upper end bracket 71 and the lower end bracket 72 to push the support member 20. Move in the back direction of the occupant.

In this case, vibration or shock generated while driving the vehicle may be absorbed by the bent portion 81 of the rotation wire 80.

Subsequently, when the operation of the driving motor 91 is stopped, the support member 20 is maintained in the rotated state, and when the screw bar 60 is rotated in the reverse direction by operating the driving motor 91 again, the upper end moves. The bracket 71 and the lower end movement bracket 72 move to their original positions, and the support member 20 rotates backwards to its original position.

1: Seat back frame 10: Lumber support assembly
20: support member 30: guide bar
40: bonding bracket 50: fixing bracket
51: upper fixing bracket 52: lower fixing bracket
60: screw bar 70: moving bracket
71: Top moving bracket 72: Bottom moving bracket
80: rotating wire 90: drive motor coupling portion
91: drive motor 92: gearbox

Claims (8)

In the lumber support assembly installed on the seat back frame inside the car seat to support the spine and back of the passenger,
A support member installed inside the seat back frame;
A U-shaped guide bar installed at the rear of the support member and having an upper end hinged to an upper portion of the support member;
A pair of fixing brackets coupled to the upper side and the lower side of the guide bar, respectively;
A screw bar having both ends coupled to the pair of fixing brackets, the threads being symmetrical with each other on the outer circumferential surface of the longitudinal center;
The second coupling parts protruding at the center of the thread formed on the screw bar are respectively screwed to face each other with respect to the center of the screw bar, and when the screw bar is rotated, the guide bar is slidably moved in opposite directions along the guide bar. A pair of moving brackets formed at both sides of the second guide groove being supported; And
And one or more pivoting wires, one end of which is hinged to the fixed bracket, and the other end of which is supported by the movable bracket, respectively, to rotate in the direction of the support member when the movable bracket moves.
The method of claim 1, wherein the pair of fixing brackets,
And a top fixing bracket coupled to the upper side of the guide bar across the guide bar, and a bottom fixed bracket coupled across the guide bar to the lower side of the guide bar.
The method of claim 2, wherein the pair of moving brackets,
A lumber support assembly comprising a top movable bracket coupled to the bottom of the upper fixed bracket so as to be movable along the guide bar, and a bottom movable bracket coupled to the bottom of the upper movable bracket along the guide bar. .
The method of claim 1, wherein the fixing bracket,
The first coupling portion to which the screw bar is coupled is formed to protrude in the center, and the first guide portion for supporting the guide bar is formed to protrude on both sides, the first guide groove for receiving the guide bar is formed on one side of the first guide portion The other side of the first guide portion lumber support assembly, characterized in that the coupling groove is formed in which the pivoting wire is hinged.
delete The method of claim 1, wherein the rotating wire,
The lumber support assembly, characterized in that the curved portion formed in one direction in the support member.
The method according to claim 1,
Lumber support assembly, characterized in that the coupling bracket for coupling the guide bar to the seat frame on one side of the guide bar.
The method according to claim 1,
A drive motor is coupled to the lower end of the guide bar, the lumber support assembly, characterized in that the screw bar is rotated by the operation of the drive motor.

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