KR101444192B1 - Apparatus of adjusting back protrusion of seat - Google Patents

Abstract

The present invention relates to a seat backrest adjustment device. The present invention provides a seat backrest protrusion amount adjustment device including a curved plate positioned inside a seat backrest portion as a plate material which can be curved and deformed by elasticity; a guide member which guides a movement of the curved plate along a predetermined path; a first moving member fixated to the curved plate and moved along the guide member; a second moving member fixated to the curved plate at a position apart from the first moving member, and moved along the guide member; a moving driving screw shaft where a male screw portion engaged with a female screw portion formed in the first moving member is formed; a moving driving motor position-fixed to the guide member, drives the moving driving screw shaft to rotate, and moves the second moving member vertically to the guide member; a curved driving wire fixated to a central portion of the first moving member, extends upwards or downwards, and extends to the left or the right from the curved plate via a direction conversion pulley; and a curved driving disposed to be supported by the first moving member and pulls or releases the curved driving wire. According to the present invention, twisting of both sides of a supporting plate due to a height difference can be prevented, and thus a user can feel comfortable with a balanced operation during the course of the control amount of a seat backrest protrusion.

Description

[0001] APPARATUS OF ADJUSTING BACK PROTRUSION OF SEAT [0002]

More particularly, the present invention relates to a seat backrest adjusting device, and more particularly, to a seat backrest adjusting device capable of adjusting the seat backrest adjusting device so as to protrude from a desired position according to a sitting position of a user sitting on a seat, To adjust the projecting amount of the seat back so that the adjustment of the projecting amount of the seat back can be balanced to the user.

BACKGROUND ART [0002] In general, since a seat for an automobile, an armchair, and the like are constructed of a fixed type of backrest, there has been a long standing problem that the posture becomes uncomfortable according to the body shape of a person sitting on the seat. Accordingly, as disclosed in Korean Patent Laid-Open Publication No. 2003-64150, a protruding amount adjusting device for a seat back capable of adjusting the forward protruding shape of the backrest according to the body shape and taste of the driver or the user has been developed.

In general, the backrest of an automobile seat is composed of a rectangular outer frame as shown in Fig. 1, a cushioning material embedded inside the outer frame, and an outer sheet 10 covering the outer frame and the cushioning material.

A conventional backrest projection adjusting device 1 includes a curved plate formed on a back surface of a cushioning material of a backrest 12 and made of a steel material having excellent elastic restoring force, a wire having its tip fixed to the upper or lower end of the curved plate, A winding drum for winding the wire, and a rotary motor for rotating the winding drum forward and backward.

When the winding drum is rotated and the wire is wound by the rotation type motor, the upper or lower end of the curved plate is pulled so that the curved plate bends and projects to the front (12d), and the amount of forward projecting of the back is increased When the winding drum is rotated by the rotation type motor and the wire is released, the curved plate is restored backward by the elastic force of the curved plate, and the amount of forward protrusion of the back is reduced. Thus, the backrest is adjusted according to the driver's or user's body shape or taste .

However, the conventional apparatus for adjusting the amount of protrusion of the seat back has to include a rotary motor and a winding drum for rotating the wire while rotating by the rotary motor, so that the number of components increases, complicating parts management, , The space for installing the backrest increases, and the like.

Korean Patent Registration No. 10-12632299, filed by the present applicant and patented, discloses a device for adjusting the amount of protrusion of a seat back which simultaneously adjusts a protruding position and a protruding amount of a seat back, The movable driving screw shaft for adjusting the protruding position is biased to one side of the supporting plate so that when the driving driving motor is driven to adjust the protruding position, There is a problem that both sides of the support plate move differently from each other without going up, and there is a problem that it causes heterogeneity or inconvenience to the user.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a seat for a vehicle or the like that allows movement in a lateral direction corresponding to a movement of a user sitting on a seat, And it is an object of the present invention to provide a device for adjusting the amount of protrusion of a seat back which can be adjusted.

At the same time, according to the present invention, both the protruding position and the protruding amount of the seat back can be adjusted at the same time, and both the protruding position and the protruding amount are adjusted at the central portion of the support plate, And it is an object of the present invention to enable the user to feel comfort in a balanced operation without feeling a sense of heterogeneity in the process of manipulating the amount of projection of the seat back.

In addition, the present invention is not limited to locating the protruding portions of the seat back, but rather protruding in a uniformly distributed state over the entire seat, thereby locally protruding, thereby eliminating the inconvenience felt by the user and ensuring the comfort of the user For other purposes.

It is another object of the present invention to enable silent operation by minimizing noise that operates the seat back device.

In order to achieve the above-mentioned object, the present invention provides a folding type elevator comprising: a curved plate positioned inside a seat back portion of a plate material which is deformable by elasticity; A guide member for guiding movement of the curved plate along a predetermined path; A first moving member fixed to the curved plate and moving along the guide member; A second moving member fixed to the curved plate at a position spaced apart from the first moving member and moving along the guide member; A movement driving screw shaft having a male screw portion engaged with a female screw portion formed on the first moving member; A movement driving motor which is fixed to the guide member and drives the movement driving screw shaft to rotate the second moving member up and down with respect to the guide member; A curved driving wire fixed to a central portion of the first moving member and extending in any one of a vertical direction and extending in either the left or right direction of the curved plate via a direction changing pulley; A curved driving motor installed to be supported by the first moving member and pulling or releasing the curved driving wire; And a control unit for controlling the amount of protrusion of the seat back.

This allows the curved deformation of the curved plate to be made in a compact structure in which the curved driving wire is not exposed to the outside of the curved plate by adjusting the linear distance of the first moving member and the second moving member by using the curved driving wire Not only the first moving member and the second moving member which are connected to each other by the curved driving wire are moved along the direction in which the guide member extends by the moving portion so that the portion protruding according to the physical condition of the user sitting on the seat is free So that it can be controlled by the material.

The present invention is characterized in that the curved driving wire extends in the vertical direction from the first moving member and extends in the left and right direction via the direction switching pulley and is pulled or released by the curved driving motor, The distance between the first and second movable members is adjusted so that the amount of curvature projection of the curved plate between the first movable member and the second movable member is adjusted so that the operation of adjusting the amount of curvature projection can be performed in a more quiet environment.

At this time, the direction switching pulley is rotatably provided on the first moving member, and friction with the direction switching pulley is minimized in accordance with the movement of the curving driving wire in the axial direction, so that the life of the curving driving wire can be secured, The noise generated during the adjustment of the amount of projection of the back can be reduced.

The end of a portion of the curved driving wire extending in the left-right direction is connected and fixed to a curved driving shaft moving in the left-right direction. The curved driving shaft is moved leftward and rightward by the curved driving motor to pull the curved driving wire It works to release. Thus, the curvature drive motor linearly moves the curvature drive wire along a predetermined path, thereby pulling and releasing the curvature drive wire. Thus, the movement path of the curvature drive wire is always constantly adjusted, The plate can be bent and projected.

More specifically, in the present invention, the adjustment of the bending position is performed by the movable drive screw shaft, and the adjustment of the bending protrusion amount is performed by the bending drive wire which does not occupy the volume, And the movable drive screw shaft can be both positioned at the center of the support plate. Accordingly, as the protruding position and the protruding amount of the seat back can be adjusted at the same time, the adjustment of the protruding position and the protruding amount is made at the central portion which is the center of gravity of the support plate, so that the first moving member and the second moving member are inclined Therefore, it is possible to solve the conventional problem that the both sides of the support plate are not always maintained at the same height. Accordingly, it is possible to prevent the user from feeling uncomfortable or inconvenient in the process of manipulating the protruding position and the protruding amount , An advantageous effect that a more compact structure can be realized can be obtained.

Further, in the present invention, the curved plate is formed of two or more plate members vertically connecting the first moving member and the second moving member at positions spaced apart from each other; The support plate may further include a support plate rotatably installed on the guide member, the support plate being rotatable in an anteroposterior direction according to the amount of curved protrusion of the curved plate to support the seat back, and being formed of a plate material capable of being deformed by elasticity . As described above, by adjusting the projecting amount of the backrest by making the curved plate and the support plate two sides, it is possible to realize a feeling that the entire back of the seat back gradually protrudes, thereby providing the user with more comfort.

In addition, according to the present invention, since the curved plate and the support plate are biased, the support plate can be deformed in the left-right direction as the user's body moves, and the curved plate and the first It is possible to prevent the components of the movable member, the second movable member, and the like from being displaced.

On the other hand, the guide member is formed in a bar shape including a pair of linear regions parallel to each other, and the extended regions on both sides thereof are arranged to penetrate both sides of the first moving member and the second moving member, When the first moving member and the second moving member are driven to move along the guide member by the moving unit, the first moving member and the second moving member can stably move without shaking.

As described above, according to the present invention, by adjusting the linear distance between the first moving member and the second moving member to be closer or further away using the curved driving wire, a compact structure in which the curved driving wire is not exposed to the outside of the curved plate Not only the curved deformation of the curved plate is enabled but also the first moving member and the second moving member connected to each other by the curved driving wire are moved along the direction in which the guide member extends by the moving portion, It is possible to obtain an advantageous effect of freely adjusting the protruding portion according to the condition.

According to the present invention, the direction-switching pulley for guiding the curved driving wire is rotatably installed on the first moving member, and minimizes the friction with the direction switching pulley in accordance with the movement of the curved driving wire in the axial direction, The long life of the wire can be ensured and an advantage that the adjustment of the amount of protrusion of the seat back can be performed more silently is obtained.

More specifically, according to the present invention, the curved position is adjusted by positioning the movable driving screw shaft and the curved driving wire for adjusting the amount of curved projection to be aligned with the central portion of the supporting plate, Since both sides of the support plate are always maintained at the same height, it is possible to advantageously operate in a comfortable environment without causing any inconvenience or inconvenience to the user in the process of manipulating the protruding position and the protruding amount Can be obtained.

In addition, according to the present invention, since the curved plate and the support plate are made double and the amount of protrusion of the backrest is adjusted, not only the whole back of the seat back is gradually protruded so that the user can feel more comfortable, Even if the support plate is rotated by the rotation of the support plate, the degree to which the curved plate is tilted is kept smaller than this, so that the durability life of each component becomes long and reliable operation can be ensured for a long time.

1 is a schematic view showing the action of a projection adjusting device of a general seat back;
2 is a perspective view showing a configuration of a projection adjusting device of a seat back according to an embodiment of the present invention;
Fig. 3 is a functional principle diagram of the moving part of Fig. 2,
FIG. 4A is a schematic view for explaining the operation principle of the 'A' portion of FIG. 2,
5A and 5B are a rear view and a side view for explaining the projecting action of the seat back.

Hereinafter, a projection adjusting device 100 of a seat back according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a perspective view showing the configuration of the projection adjusting device of the seat back according to the embodiment of the present invention, Fig. 3 is a working principle diagram of the moving part of Fig. 2, Figs. 5A and 5B are a rear view and a side view for explaining the projecting action of the seat back. Fig.

As shown in the drawing, the projection adjusting device 100 of the seat back according to the embodiment of the present invention is installed inside the seat back as shown in FIG. 1, and the curved portion is movable in the vertical direction (1v) A guide member (110) of a rod shape including a pair of parallel paths so as to guide the guide member in the up and down direction; a guide member (110) formed of a plate material capable of being deformed by bending by elasticity and provided inside the seat back A curved plate 120z which moves along the guide member 110, a support plate 120 which is rotatably fixed on the upper side of the guide member 110 and projects forward in accordance with the curvature of the curved plate 120z, A first shifting member 130 coupled to the lower end of the lower end of the plate 120z by a coupling rivet 133 and movably along the guide member 110, A second shifting member 160 coupled to the first shifting member 163 so as to be movable along the guide member 110 and a male threaded portion engaged with the female threaded portion 131 of the first shifting member 130, A moving drive motor 140 which is fixedly positioned on the lower side 110b of the guide member 110 so as to rotate the movement driving screw shaft 150, A curved driving wire 180 extending in the vertical direction and extending in the left and right direction by the direction changing pulley 185 of the first moving member 130, And a curved driving motor 170 installed to be supported by the second moving member 130 by a bracket and pulling or loosening the curved driving wire 180.

The guide member 110 is installed in the seat 10 and guides the movement of the first moving member 130 and the second moving member 160 in the vertical direction 130d and 160d. The guide member 110 has a pair of linear regions 110a parallel to each other so as to guide the movement path of the first moving member 130 and the second moving member 160 without shaking, And a connecting portion 110b bent from the lower side to the rear side of the seat and connected to each other.

The first moving member 130 and the second moving member 160 that move in a state in which the guide member 110 passes through the pair of linear regions 110a are provided in parallel on both sides of the guide member 110, Prevents the posture of the curved plate 120z from being changed while moving along the linear region 110a of the guide member 110. [ The connecting portion 110b on the lower side of the guide member 110 is bent and protrudes rearward and connects the linear regions 110a to each other so that the supporting base 141 supporting the moving driving motor 140 is more stable And can be installed firmly.

The curved plate 120z is formed of a plate material having excellent elastic restoring force and is formed so that both sides of the first moving member 130 and the second moving member 160 are vertically connected. In the embodiment of the present invention, a configuration in which two curved plates 120z are formed is described as an example, but it may be composed of two or more. However, it is advantageous in that the curved plates 120z are symmetrically arranged at positions spaced by the same distance about the center of the support plate 120, so that the support plate 120 can be projected without turning.

The support plate 120 is rotatably fixed to the upper side of the guide member 110 and rotates around an upper portion of the guide member 110 according to the amount of protrusion of the curved plate 120z due to the curvature, Or backward. By forming the curved plate 120z and the support plate 120 separately from each other, it is possible to realize a feeling that the entire back of the seat back gradually protrudes when adjusting the amount of protrusion of the seat back, do.

In addition, since the support plate 120 is formed in a dual shape with the curved plate 120z, the support plate 120 is deformed as the user's body moves in the lateral direction, It is possible to prevent the components of the plate 120z and the first moving member 130 and the second moving member 160, which are coupled to the plate 120z, from being displaced, so that the service life of each component is secured, It becomes possible to operate.

The first moving member 130 is coupled to the lower end of the curved plate 120z by a coupling rivet 133 and a guide member 110 arranged on both sides in a linear path passes through the ring guide 133, Along with the guide member 120z in the vertical direction 130d. The first moving member 130 is provided with a female screw portion 131 which engages with a movement driving screw shaft 150 driven by the movement driving motor 140 so that the moving screw shaft 150 moves in the forward and reverse directions The first moving member 130 whose rotation is restrained is driven to move in the vertical direction 130d.

When the first moving member 130 moves in the vertical direction 130d by the movement driving motor 140, the second moving member 160 and the curved plate 120z, which are connected to each other through the curved plate 120z, Down direction 160d so that the vertical position of the curved protrusion can be adjusted.

The second moving member 160 is coupled to the upper end of each curved plate 120z by a coupling rivet and the guide member 110 arranged in a linear path on both sides is passed through the ring guide 163, 120z along the guide member 110 in a vertical direction 160d.

One end of the curved driving wire 180 is fixed to the second moving member 160 so that when the curved driving wire 180 is pulled by the curved driving motor 170, The curved plate 120z protrudes forward and the curved driving wire 180 is released by the curved driving motor 170 so that the first moving member 130 and the second moving member 160 The curved plate 120z protruding forward is retreated rearward to adjust the projecting amount of the curved plate 120z.

That is, by the tensile force acting on the curved driving wire 180, the lower end of the curved plate 120z coupled with the first movable member 130 and the upper end of the curved plate 120z coupled with the second movable member 160 The amount of projection of the sheet 10 can be adjusted since the degree to which the curved plate 120z is curved and deformed varies.

5A, a relatively thin curved driving wire 180 is positioned at the center of the supporting plate 120, while a moving driving screw shaft 150 for moving the curved plate 120z in the up and down direction is positioned at the center of the supporting plate 120, Can also be located at the center of the support plate 120. That is, the movable driving screw shaft 150 and the curved driving wire 180 can both be arranged in a state of being aligned (overlapping position when viewed from the rear) of the support plate 120. The curved plate 120z is moved in the vertical direction at the central portion of the support plate 120 and the curved plate 120z is projected forward at the central portion of the support plate 120, The supporting plate 120 and the curving plate 120z are rotated during operation to uncomfortably support the user's back part seated on the seat, .

Since the second moving member 160 is coupled to the first moving member 130 by the curved driving wire 180, the first moving member 130 is moved up and down by the moving driving screw shaft 150 130d, the second moving member 160 moves in the vertical direction 160d together with the curved driving wire 180. [

The movement driving motor 140 is fixed to the connection portion 110b on the lower side of the guide member 110 independently of the first moving member 130 and the second moving member 160 so that the moving driving screw shaft 150 Rotation drive.

3, the rotation driving screw shaft 150 includes a gear 142g in which the rotation 140r of the movement driving motor 140 is arranged perpendicularly to the pinion 140p, The rotational driving force is applied to the driving shaft 150r. At this time, the male screw portion of the movement driving screw shaft 150 is engaged with the female threaded portion 131 of the first movable member 130, and both sides of the first movable member 130 are inserted through the guide member 110, The first movable member 130 is moved in the vertical direction 130d by the rotation 150r of the movable drive screw shaft 150. As a result, Thus, the curved plate 120z and the second movable member 160 coupled to the first movable member 130 also move in the vertical direction 160d. In the drawing, the movable driving screw shaft 150 is connected to the bevel gear by the moving driving motor 140, but it may be connected to a worm gear or any other known structure.

The curved driving motor 170 is fixed to the first moving member 130 and moves together with the first moving member 130 in the vertical direction. Similar to the operating structure shown in Fig. 3, by rotating the bending drive shaft 175 at a reduced speed through the gear box in the housing fixed by rotation of the bending drive motor 170, (175d) in the lateral direction. Since the curved driving wire 180 is connected to the one end of the curved driving shaft 175 through the connecting claw 175a, by moving the curved driving shaft 175 to the left and right by the curved driving motor 170, The driving wire 180 is pulled or loosened.

4, one end of the curvature drive wire 180 is fixed to a central portion of the second moving member 160, and a direction changing pulley (not shown) which is rotatable in the casing 180x of the first moving member 130, And the other end is fixed to the curved drive shaft 175. The other end is fixed to the curved drive shaft 175, Accordingly, when the bending drive shaft 175 is moved in the left-right direction 175d by the bending drive motor 170, the bending drive wire 180 is pulled or loosened so that the second moving member 160 can move up and down 160d.

5A, the curved driving motor 170 is driven to move the curved driving shaft 175 in the outward direction (leftward direction in FIG. 5A) by driving the curved driving motor 170, The curved driving wire 180 connected to the curved driving shaft 175 is pulled in the direction of the arrow 180d1 and the second moving member 160 is moved to the first moving member 130, In the downward direction 160d1.

When the distance between the first moving member 130 and the second moving member 160 becomes close to each other as described above, the first moving member 130 and the second moving member 160 are provided with a curved plate The support plate 120 positioned forward of the support plate 120z rotates about the rotation engaging portion of the upper end of the guide member 110 so that the front plate 120z is forwardly protruded .

The apparatus 100 for controlling the amount of protrusion of the seat back according to an embodiment of the present invention operates in the same manner as in the first embodiment except that the first moving member 130 and the second moving member 130, By adjusting the straight distance between the members 160, the amount of protrusion of the seat back in a more quiet environment can be adjusted, and all the components can be positioned inside the support plate 120, thereby realizing a compact structure .

At the same time, even if the seat occupant's body is shifted to one side, only the support plate 120 is deformed and the curved plate 120z keeps its position, so that the seat is not stiff The bending deformation of the bending plate 120z is minimized and the bending deformation of each component is prevented so that normal operation can not be performed. State can be assured.

In the present invention, the adjustment of the curved position is performed by adjusting the movement drive screw shaft and the curved driving wire which adjusts the curved protrusion amount by being aligned with the central portion of the support plate, The position of the support plate 120 or the bending plate 120z is changed during operation of the seat back projection device so that the back portion of the user sitting on the seat is uncomfortably supported It is possible to obtain a preventive effect.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

100: projection regulating device of seat back
110: guide member 120z: curved plate
120z: support plate 130: first moving member
140: Moving drive motor 150: Moving drive screw shaft
160: second moving member 170: bending drive motor 1
180: Curved driving wire

Claims (5)

A curved plate positioned inside the seat back portion by a plate material capable of being deformed by elasticity;
A guide member for guiding movement of the curved plate along a predetermined path;
A first moving member fixed to the curved plate and moving along the guide member;
A second moving member fixed to the curved plate at a position spaced apart from the first moving member and moving along the guide member;
A movement driving screw shaft having a male screw portion engaged with a female screw portion formed on the first moving member;
A movement driving motor which is fixed to the guide member and drives the movement driving screw shaft to rotate the second moving member up and down with respect to the guide member;
A curved driving wire fixed to a central portion of the first moving member and extending in any one of a vertical direction and extending in either the left or right direction of the curved plate via a direction changing pulley;
A curved driving motor installed to be supported by the first moving member and pulling or releasing the curved driving wire;
And the amount of protrusion of the seat back is adjusted.
The method according to claim 1,
Wherein the pulley is rotatably mounted on the first shifting member.
3. The method of claim 2,
The end of a portion of the curved driving wire extending in the left-right direction is connected and fixed to a curved driving shaft moving in the left-right direction. The curved driving shaft is moved leftward and rightward by the curved driving motor to pull or release the curved driving wire And the amount of protrusion of the seat back is adjusted.
3. The method of claim 2,
Wherein the upper and lower parts, which are connected to ends arranged in the left-right direction of the curvature driving wire, and the moving drive screw shaft are arranged to be overlapped with each other.
5. The method according to any one of claims 1 to 4,
Wherein the curved plate is formed of two or more plate members vertically connecting the first moving member and the second moving member at positions spaced apart from each other;
A support plate rotatably installed on the guide member, the support plate being rotatable in an anteroposterior direction according to a curved protrusion amount of the curved plate to support the seat back and being formed of a plate material capable of being deformed by elasticity;
Wherein the seat back is provided with a seat back.

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