KR20200059199A - Apparatus for adjusting the angle of chair seat - Google Patents

Abstract

The present invention relates to a seat plate angle adjustment device for a chair and, more specifically, to a seat plate angle adjustment device for a chair, which allows a seat plate installed on a chair to be rotated, is adjusted according to a seat plate angle preferred by a chair user to straighten the waist of the chair user when the chair user performs work, and allows the seat plate angle to be adjusted according to the posture of the chair user during rest to provide comfort to the chair user so that the chair user can take a rest without a slip of the lower body.

Description

{Apparatus for adjusting the angle of chair seat}

The present invention relates to an angle adjustment device for the seat plate of a chair, and more specifically, to make the seat plate installed on the chair rotatable, and to be adjustable according to the angle of the seat plate preferred by the chair user, so that the chair user performs work. When it is done, the waist is straightened. When resting, the angle of the seat plate is adjusted to the posture according to the rest of the chair user so that the lower body of the chair user can rest comfortably without slipping. It is about.

In general, chairs used in offices, etc., are equipped with a height adjustment unit capable of adjusting the height of a seat suitable for a user's height, and are formed by adjusting the height of the seat while lowering or adjusting the height of the seat to fit the height of the seat. Is done.

In the middle of these chairs, it has been suggested that the rear end of the seat plate is hinged and the seat is lifted. Since the same force is applied, the seat plate with the rear end hinged is easily damaged by this large rotational force, and thus there is no marketability, resulting in a problem with the product being killed.

In addition, there are many conventional proposals regarding the height adjusting unit for adjusting the overall height of the seat plate, but there are not many proposals for adjusting the angle of the seat plate rather than adjusting the height of the entire seat plate.

In the conventional seat folding chair, the seat is formed so that the seat seat is horizontal, so the user lowers the lower body away from the back of the chair while bending the back while the user is performing work. This increases the fatigue of the back and back muscles. In addition, when the user's back and head are tilted back to rest, there is a problem that the user's lower body must slide forward and move forward. Therefore, a seatless folding chair with a relatively simple structure without a height adjustment unit or a simple chair that is not foldable Even in the case of a user, the user's lower body can be fixed at the current position so that the user's lower body does not slide forward from the seat plate even if the user's lower back and head are tilted back at rest. There is an urgent need to provide a chair capable of adjusting the angle of the seat of the chair so as to improve the convenience of the user who uses the chair.

On the other hand, in the related art, as a chair capable of adjusting the angle of the seat of the chair, a "sliding folding chair with a seat height adjustable in front (Republic of Korea Patent No. 10-1715092)" has been proposed.

FIG. 1 is a perspective view of a seat sliding folding chair capable of adjusting the front height of a seat, and FIG. 2 is a schematic cross-sectional view showing a state in which the seat of the seat sliding sliding chair capable of adjusting the front height is adjustable.

Referring to Figures 1 to 2, the conventional seat plate sliding height adjustable front seat sliding chair (A), the front caster 11 is attached to the lower portion is formed to be inclined rearward and the rear end is bent inclined basic support leg ( 1), a horizontal support bar (2) fixed horizontally from the middle of the basic support leg (1), a rear caster (31) is attached to the lower part and bent forward and bent on the horizontal support bar (2) The rear support leg (3) with an upper end attached thereto, the hinge plate fixed to the hinge support shaft (4) fixed to the horizontal support bar (2) and slidable forward, the seat (6), the rear end of the basic support leg (1) It consists of a hinge pivoting part (7) fixed to the upper end, and a waist support plate (8) fixed between the hinge pivoting parts (7).

In addition, the hinge support shaft 4 extending obliquely from the rear of the middle of the horizontal support bar 2 is fixed, and an extension portion 5 for supporting a seat plate extending obliquely forward from the middle of the horizontal support bar 2 Is fixed, the length of the extension for supporting the seat plate 5 fixed to the front of the horizontal support bar 2 is formed longer than the length of the hinge fixing shaft 4 fixed to the rear, and the extension for supporting the seat plate The height of the portion (5) is formed equal to or higher than the height of the hinge fixing shaft (4) fixed to the rear, the rear end of the seat plate (6) is hinged to the hinge fixing shaft (4) and the bottom surface of the seat plate supports the transverse Supported by a bar (2) and an extension portion (5) for supporting the seat plate, a seat plate height adjuster (55) is fixed to the front end of the extension portion (5) for supporting the seat plate, and the seat plate height adjuster (55) , Fixing pipes (56), which are communicated up and down, and which are threaded into the threaded holes (56a) in which female threads are machined, are welded and fixed to the two inner edges of the extension (5) for the seat plate support, and screwed to the fixtures (56). As it is lifted, it is in contact with the support plate on the bottom of the seat plate 6 and includes an adjustment handle 57 for adjusting the height of the front portion of the seat plate.

The adjustment handle 57 includes a control handle 57a that can be rotated by a chair user by hand, a screw portion 57b extending from the control handle 57a and having a male screw formed on an outer surface thereof, and the screw portion 57b ) Is fixed to the other end of the welding, and the upper surface is made of a flat surface, which makes surface contact with the front portion of the support plate 61 of the bottom surface of the seat plate 6 and is in front of the seat plate 1 according to the rising and falling operation of the screw portion 57b. It comprises a seat plate contact portion (57c) for adjusting the height of the portion.

However, in the case of the conventional seat plate sliding foldable chair (A) capable of adjusting the front height, the seat plate height adjuster 55 for adjusting the height of the seat plate is installed on the left and right sides, respectively, and is configured to adjust individually. In the process of adjusting the height of the seat plate has a problem that it is difficult to adjust to the correct horizontal state. Due to this, if the user's seating process is repeated on a seat plate that is not level during long-term use, the user's sitting posture may be poor, which may cause back pain, etc., and may have a problem of deteriorating the durability of the chair. have.

Republic of Korea Registered Patent No. 10-1715092

The object of the present invention is to solve this problem, it is possible to rotate the seat plate installed on the chair, it is possible to adjust according to the angle of the seat plate preferred by the user of the chair, and the seat plate in a state in which the entire seat plate is correctly leveled It is possible to adjust the angle of the chair so that the user of the chair can straighten the waist when performing work. When resting, the angle of the seat plate is adjusted comfortably in the posture according to the rest of the chair user. It is to provide a seat angle adjustment device for a chair so that you can rest.

In order to achieve the above object, the seat angle adjustment device of the chair according to the first embodiment of the technical idea of the present invention, the front supporter 11 is attached to the lower part and is formed to be inclined backward and the rear end is bent to bend the basic support leg ( 1), the horizontal support bar (2), which is fixed horizontally from the middle of the basic support leg (1) and fixed to the hinge support shaft (21) to one side, a rear caster (31) is attached to the lower part and is inclined forward. A hinged hole 42a for bending and fixing the rear support leg 3 with the top attached to the horizontal support bar 2 and the hinge fixing shaft 21 fixed to the horizontal support bar 2 is hinged. The seat hinge 4 to which the formed hinge fastener 42 is attached to the bottom surface, the hinge pivot part 5 fixed to the upper end of the rear end of the basic support leg 1, and the waist fixed between the hinge pivot part 5 In the folding chair (A) made of a support plate (6), the seat plate (4) is installed on the base plate (41) of the bottom of the chair to adjust the seat angle of the chair seat angle adjustment device (300) of the chair, The seat angle adjustment device 300 of the gear case 310 coupled to the horizontal support bar 2 and having an accommodation space formed therein, and a handle shaft 321 to pass through the gear case 310 are axial Combined, and accommodated in the accommodation space of the gear case 310 in a state coupled to the handle (320) and the handle shaft 321, the user rotates by hand to adjust the angle of the seat plate (4) The worm 330 to be engaged, the worm gear 340 accommodated in the accommodation space of the gear case 310 to mesh with the worm 330, and the gear shaft 350 coupled to the worm gear 340 and having a thread formed thereon ); And a lifting member that is screwed with the threads of the gear shaft 350 and moves in the up and down direction while in contact with one side of the support plate 41 to adjust the angle of the seat plate 4 when the worm gear 340 rotates. 360) ;.

The seat angle adjustment device for a chair according to an embodiment of the technical idea of the present invention for achieving the above object has the following effects.

First, it is possible to rotate the seat plate installed on the chair, it is possible to adjust according to the angle of the chair user's preferred seat plate, and the angle of the seat plate can be adjusted with the horizontal level of the entire seat plate accurately adjusted.

Second, as the seat angle of the chair can be finely adjusted to the angle desired by the user, the chair user straightens his back when performing work, and when resting, the chair user can comfortably adjust the posture according to the rest of the chair user. The effect is that you can take a comfortable rest without slipping your lower body.

1 is a perspective view of a sliding seat folding chair with adjustable seat height.
Figure 2 is a schematic cross-sectional view showing a state in which the seat height of the seat folding sliding chair that can adjust the height of the seat front.
3 is a perspective view of a typical seat folding chair.
Figure 4 is a perspective view of the seat angle adjustment device of the chair according to the first embodiment of the present invention installed on the base of the chair seat.
5 is a bottom perspective view of the seat plate angle adjuster of the chair of FIG. 4 as viewed from the bottom.
Figure 6 is a perspective view showing a main portion of the seat angle adjustment device of the chair of Figure 4;
7 is a cut perspective view showing a cut state of the seat angle adjustment device of the chair of Figure 4;
Figure 8 is an operational view showing the operating state of the seat angle adjustment device of the chair of Figure 4;
9 is a perspective view of the seat angle adjustment device of a chair according to a second embodiment of the present invention installed on a base plate of a chair seat.
10 is a bottom perspective view of the seat plate angle adjuster of the chair of FIG. 9 as viewed from the bottom.
11 and 12 is a perspective view showing a main portion of the seat angle adjustment device of the chair of Figure 9;
13 is a cut perspective view showing a cut state of the seat angle adjustment device of the chair of FIG. 9;
14 is an operational view showing the operating state of the seat angle adjustment device of the chair of Figure 9;
15 is a perspective view of a seat angle adjustment device for a chair according to a third embodiment of the present invention installed on a chair.
16 and 17 are perspective views of the seat plate angle adjustment device of a chair according to a third embodiment of the present invention installed on a base plate of a chair seat plate.
Figure 18 is an exploded perspective view of the seat plate angle adjustment device of Figure 15 chair.
19 is a perspective view of a cutting part of the seat plate angle adjustment device of FIG. 15;
20 is an operation view showing the operating state of the seat angle adjustment device of the chair of FIG. 15.
21 is a perspective view of a seat angle adjustment device for a chair according to a fourth embodiment of the present invention installed on a base plate of a chair seat.
22 is a bottom perspective view of the seat plate angle adjuster of FIG. 21 as viewed from the bottom.
23 is an operational view showing the operating state of the seat angle adjustment device of the chair of Figure 21.

In order to fully understand the present invention and the operational advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the contents described in the drawings, which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing denote the same members.

3 is a perspective view of a typical seat folding chair.

Referring to Figure 3, the seat plate angle adjustment device (100, 200, 300, 400) of the chair according to an embodiment of the present invention, the front caster 11 is attached to the lower portion is formed to be inclined backward and bent at the rear end Basic support leg (1), a horizontal support bar (2) fixed horizontally from the middle of the basic support leg (1), a rear caster (31) is attached to the bottom, bent forward and inclined, and the horizontal support bar (2) A rear support leg (3) with an upper end attached to it, a hinge plate fixed to the hinge support shaft (4) fixed to the horizontal support bar (2) and sliding forward (6), the basic support leg ( In the folding chair (A) consisting of a hinge pivoting part (7) fixed to the upper end of the rear end of 1) and a waist support plate (8) fixed between the hinge pivoting parts (7), the seat plate (4) of the bottom It is installed on the base plate 41 and relates to a seat plate angle adjustment device for a chair for adjusting the seat plate angle of the chair. Such an angle adjustment device for the seat plate of the chair enables the seat plate to be rotatable, and it is possible to adjust according to the angle of the chair user's preferred seat plate, and the angle of the seat plate can be adjusted with the horizontal level of the entire seat plate accurately adjusted. When the user performs the work, the waist is straightened, and when resting, the angle of the seat plate is adjusted comfortably to the posture according to the rest of the chair user, so that the lower body of the chair user can rest comfortably without slipping. Can have

Chair seat angle adjustment device (100, 200, 300, 400) according to an embodiment of the present invention is to be installed on the folding chair (A) as described above, the core of the present invention is to adjust the seat angle of the chair Since it relates to the seat angle adjustment device, a detailed description of the folding chair A will be omitted and the seat angle adjustment device will be mainly described.

Figure 4 is a perspective view of the seat angle adjustment device of the chair according to the first embodiment of the present invention installed on the support plate of the chair seat plate, Figure 5 is a bottom perspective view of the seat plate angle adjustment device of Figure 4 from the bottom, Figure 6 4 is a perspective view showing the main part of the seat angle adjustment device of the chair, FIG. 7 is a cut perspective view showing the cut state of the seat angle adjustment device of FIG. 4, and FIG. 8 is an operating state of the seat angle adjustment device of the chair of FIG. 4 It is an operation diagram showing.

4 to 8, the seat plate angle adjustment device 100 of the chair, the front supporter 11 is attached to the lower portion is formed to be inclined to the rear, and the rear end is bent at an angle to the basic support leg 1, the basic The horizontal support bar (2), which is fixed horizontally from the middle of the support leg (1) and fixed to the hinge hinge shaft (21) on one side, and the flat support plate (22) on the other side, has a rear caster (31) at the bottom. Attached and bent forward and inclined forward, the rear support leg (3) with an upper end attached to the horizontal support bar (2), and the hinge fixing shaft (21) fixed to the horizontal support bar (2) are hinged to be hinged and fixed Fixing hole (42a) is formed hinge hinge fixture (42) is attached to the bottom plate (4), the hinge pivot portion (5) fixed to the upper end of the rear end of the basic support leg (1), the hinge pivot portion (5) In the foldable chair (A) made of a waist support plate (6) fixed in between, the seat plate (4) is installed on the base plate (41) of the bottom surface to adjust the angle of the seat plate of the chair (100) for adjusting the angle of the seat plate ) Is a seat plate angle adjustment device 100 installed on the chair.

The seat angle adjustment device 100 of the chair may largely include an adjustment handle 110 and a cam 120.

The adjustment handle 110 is axially coupled to one side of the support plate 41. That is, an open space is formed in the support plate 41 by a predetermined area, and the adjustment handle 110 is installed to axially rotate in one direction to the open space. In addition, a gear wheel-shaped drive gear 111 is formed on one side of the adjustment handle 110, and a portion that can be held and turned by a user is provided at a portion adjacent to the drive gear 111. For example, as shown in the figure, a driving gear 111 is formed in the central portion, and a portion that the user holds and turns by hand on both sides of the driving gear 111 is formed, and the user of the adjustment handle 110 is the user's hand. The outer surface of the part to be grasped and turned may be formed of rubber or silicone material so that it can be rotated without slipping.

The cam 120 is installed to axially rotate in the same lateral direction adjacent to the adjustment handle 110 to one side of the open space of the base plate 41. Further, the cam 120 may be provided with a driven gear 121 for engaging and rotating by rotation of the driving gear 111. In addition, the cam 120 is installed to be eccentric to both sides of the driven gear 121 on the same axis as the driven gear 121. That is, when the user rotates the adjustment handle 110, the drive gear 111 rotates, and as the drive gear 111 rotates, when the driven gear 121 engaged therewith rotates, it is on the same axis as the driven gear 121. The installed cam 120 rotates eccentrically and comes into contact with the upper portion of the support plate 22.

Accordingly, the cam 120 can be implemented such that the distance from the support plate 22 of the horizontal support bar 2 fixed while rotating eccentrically becomes farther or closer. That is, through the process in which the cam 120 rotates eccentrically, the supporting plate 41 is rotated around the hinge fixing shaft 21, and thereby, the angle of the seat plate 4 can be adjusted.

9 is a perspective view of a seat angle adjusting device of a chair according to a second embodiment of the present invention installed on a base plate of a chair seat plate, and FIG. 10 is a bottom perspective view of the seat plate angle adjusting device of FIG. 9 as viewed from the bottom, FIGS. 12 is a main perspective view showing the main part of the seat angle adjustment device of the chair of FIG. 9, FIG. 13 is a cut perspective view showing a cut state of the seat angle adjustment device of the chair of FIG. 9, and FIG. 14 is a seat angle adjustment device of the chair of FIG. It is an operation diagram showing the operating state of.

9 to 14, the seat plate angle adjustment device 200 of the chair, the front supporter 11 is attached to the lower portion is formed to be inclined to the rear and the rear end is bent at an angle to support the base leg (1), the basic The first hinge fixing shaft 21a and the second hinge fixing shaft 21b are fixed to be horizontally transversely fixed to the opposite sides of the support leg 1, and fixed to one side and formed with holes, respectively. ) Is provided with a horizontal support bar (2), a rear caster (31) is attached to the lower and bent forwardly bent and the rear support leg (3), the upper end is attached to the horizontal support bar (2), the horizontal support bar (2) The first hinge fixing shaft 21a fixed to the hinge plate to which the hinge fixing holes 42a in which the hinge hole 42a is formed is attached to the bottom surface 4, the basic supporting leg 1 In the folding chair (A) consisting of a hinge pivoting part (5) fixed to the upper end of the rear end, and a waist support plate (6) fixed between the hinge pivoting parts (5), the support plate (4) of the bottom plate ( It is installed on 41) is a seat plate angle adjustment device 200 of the chair for adjusting the angle of the seat plate of the chair.

The seat angle adjustment device 200 of the chair may largely include a rotating member 210 and an adjustment handle 220.

The rotating member 210 is coupled to the second hinge fixing shaft 21b of the horizontal support bar 2 so as to be rotatable in the left and right directions. When the rotating member 210 rotates, the support plate 41 is lifted to adjust the angle of the seat plate 4. That is, the rotating member 210 is axially coupled to the second hinge fixing shaft 21b to rotate in the left and right directions around the second hinge fixing shaft 21b, and one side contacts a part of the supporting plate 41 It is configured to be able to. Therefore, the supporting plate 41 may be provided with a portion capable of contacting the rotating member 210.

The adjustment handle 220 is interpolated to be rotatable on one side of the rotating member 210, but is screwed to the hole of the support piece 23. That is, the adjustment handle 220 may be interpolated to the rotating member 210 to a part opposite to the part in contact with the support plate 41, wherein the adjustment handle 220 allows the user to adjust the angle of the seat plate 4 As a part to be rotated by hand, it can be divided into a handle part held by a user and a bolt part above the handle part. In addition, the locking handle 211 may be installed inside the rotating member 210 so as not to be separated from the rotating member 210 when the adjusting handle 220 is interpolated to the rotating member 210. The clamp 211 may be a part in which a central portion of the adjustment handle 220 is combined so that the adjustment handle 220 is rotatable, but a hole is formed so as not to be separated, and the adjustment handle 220 is coupled to the clamp 211 The bolt portion is screwed into the hole of the support piece 23 in a state in which it is possible to have a rotatable structure.

When the user rotates the adjusting handle 220 using the rotating member 210 and the adjusting handle 220, the adjusting handle 220 rotates while being locked by the catch 211, and accordingly, the adjusting handle The rotating member 210 is rotated around the second hinge fixing shaft 42b while the 220 is tightened or released in a state where the bolt portion is screwed to the support piece 23 and the rotating member 210 is rotated. A part of the support plate 41 is pushed in contact with it, so that the angle of the seat plate 4 can be adjusted.

15 is a perspective view of a seat angle adjustment device for a chair according to a third embodiment of the present invention installed on a chair, and FIGS. 16 and 17 are angle adjustments for a seat plate of a chair according to a third embodiment of the present invention installed on a base plate of a chair seat plate Device perspective view, FIG. 18 is an exploded perspective view of the seat plate angle adjusting device of FIG. 15, and FIG. 19 is a cut perspective view showing a part of the seat plate angle adjusting device of FIG. 15 cut, and FIG. It is an operation diagram showing the operating state of the seat angle adjustment device for the chair.

15 to 20, the seat plate angle adjustment device 300 of the chair, the front supporter 11 is attached to the lower portion is formed to be inclined to the rear and the rear end is bent inclined to the base support leg (1), the basic The horizontal support bar (2), which is fixed horizontally from the middle of the support leg (1) and fixed to the hinge hinge shaft (21) to one side, is attached to the rear caster (31) at the bottom, bent forward and bent inclined. A hinge supporting hole 42 having a hinge supporting hole 42a for fixing the rear supporting leg 3 with the upper end attached to the bar 2 and the hinge fixing shaft 21 fixed to the horizontal supporting bar 2 is provided. ) Is a seat plate (4) attached to the bottom surface, a hinge pivot part (5) fixed to the upper end of the rear end of the basic support leg (1), and a waist support plate (6) fixed between the hinge pivot parts (5) In the folding chair (A) is made, the seat plate (4) is installed on the support plate 41 of the bottom surface is a seat plate angle adjustment device 300 of the chair for adjusting the seat plate angle of the chair.

The seat plate angle adjustment device 300 of the chair may largely include a gear case 310, an adjustment handle 320, a worm 330, a worm gear 340, a gear shaft 350, and a lifting member 360. have.

The gear case 310 is coupled to the horizontal support bar 2 and has an accommodation space formed therein, into which the worm 330, the worm gear 340, and the gear shaft 350 are accommodated. Can be. The gear case 310 is fixedly coupled to the horizontal support bar 2 in a fixed state, and at least two may be installed on the horizontal support bar 2. In addition, the worm 330, the worm gear 340 and the gear shaft 350 may be accommodated and assembled in a structure in which the upper and lower parts are separated.

The adjustment handle 320, the handle shaft 321 is axially coupled to penetrate the gear case 310, the user rotates the hand to adjust the angle of the seat (4). That is, the adjustment handle 320 is a handle shaft 321 is coupled to penetrate a plurality of gear cases 310, the handle shaft 321 may be provided with a handle portion that the user can hold at one end, the handle portion It can be formed of a rubber or silicone material to prevent slipping. That is, when the handle portion is rotated, the handle shaft 321 is interlocked to have a rotating structure.

The worm 330 is accommodated in the receiving space of the gear case 310 while being axially coupled to the handle shaft 321, and is a gear having a thread formed on its outer circumferential surface, with rotation of the handle shaft 321. It is interlocked and rotates within the accommodation space of the gear case 310.

The worm gear 340 is accommodated in the accommodation space of the gear case 310 so as to mesh with the worm 330, and is arranged at right angles to the worm 330 and is perpendicular to the worm 330 as it rotates. It is a gear that changes direction and rotates. At this time, the worm 330 corresponds to the drive shaft and the worm gear 340 corresponds to the driven shaft, and the worm gear 340 may rotate by the rotation of the worm 330, but, conversely, by the rotation of the worm gear 340. The worm 330 is made of a structure that cannot be rotated.

The gear shaft 350 is axially coupled to the worm gear 340 and a thread is formed on the upper portion. The gear shaft 350 is one side is axially coupled to the worm gear 340, the other side is installed to be exposed to the outside of the gear case 310. For example, a threaded portion of the gear shaft 350 may be exposed outside the gear case 310. When the gear shaft 350 is rotated, a part of the worm gear 340 is rotated while being partially accommodated in the inner space of the gear case 310 and the rest of the gear shaft 310 is exposed outside the gear case 310.

The lifting member 360 is a portion that is screwed with the threads of the gear shaft 350 and moves in the up and down direction when the worm gear 340 rotates. The lifting member 360 is screwed to the threads of the gear shaft 350 exposed outside the gear case 310, and when the gear shaft 350 rotates, the screw coupling is loosened or fastened on the gear shaft 350 in the process of being engaged. It can move up and down. At this time, a guide protrusion 361 protruding in the vertical direction is inserted into the guide groove 311 formed on the upper side of the gear case 310 and guided at one side of the elevating member 360 so that the lifting operation may be performed. That is, as the elevating member 360 is inserted into the guide groove 311 of the gear case 310 and the elevating operation is performed, the elevating member 360 may be stably supported without being disengaged. There will be.

When explaining the operation sequence of the seat angle adjustment device 300 of the chair, first, when the user rotates the adjustment handle 320, the worm 330 coupled to the handle shaft 321 rotates, and the worm 330 The gear shaft 350 rotates when the worm gear 340 is rotated by changing the direction, and the lifting member 360 screwed to the gear shaft 350 is engaged with or loosened from the gear shaft 350. This is made, the upper portion of the elevating member 360 is in contact with one side of the support plate 41, it is possible to adjust the angle of the seat plate 4 while the support plate 41 rotates around the hinge fixing shaft 21.

21 is a perspective view of a seat angle adjusting device of a chair according to a fourth embodiment of the present invention installed on a base plate of a chair seat plate, FIG. 22 is a bottom perspective view of the seat plate angle adjusting device of FIG. 21 as viewed from the bottom, and FIG. 21 This is an operation diagram showing the operating state of the seat angle adjustment device for a chair.

21 to 23, the seat plate angle adjustment device 400 of the chair, the front supporter 11 is attached to the lower portion is formed to be inclined to the rear, and the rear end is bent at an angle to the basic support leg 1, the basic A horizontal support bar (2) having a support piece (23), which is fixed horizontally from the middle of the support leg (1), fixed to one side and fixed with a hinge shaft (21), and fixed to one side, and is provided with a hole (23). The caster 31 is attached, bent forward and inclined, and the rear support leg 3 with the top attached to the horizontal support bar 2 and the hinge fixing shaft 21 fixed to the horizontal support bar 2 are hinged. The hinge plate fixed to the upper end of the rear end of the base support leg (1), the base plate (4), the hinge supporting hole (42) and the hinge member fixed hole (42b) formed with a locking member (42b) for fixing is formed In the foldable chair (A) made of a waist (6) fixed between the eastern part (5) and the hinge pivot part (5), the seat plate (4) is installed on the base plate (41) of the bottom of the chair and the seat plate angle of the chair It is a seat angle adjustment device 400 of the chair for adjusting the.

The seat angle adjustment device 400 of the chair may largely include a holder 410, a locking member 420, and an adjustment handle 430.

The holder 410 is fitted so as to be walked on the horizontal support bar 2, one end is formed with a hook portion 411 formed in a ring shape, and the other end is a space portion having an accommodation space therein ( 412) is provided. The holder 410 is fitted so as to wrap a part of the horizontal support bar 2, and may be basically formed in an 'S' shape. The hook portion 411 is a portion for the locking member 420 to be described later, and may be formed in a ring shape in which a space is provided to correspond to the thickness of the locking member 420. In addition, the space portion 412 is a space provided so that the end of the adjustment handle 430, which will be described later, is locked and accommodated.

The locking member 420, one side is hinged to the locking member fixing hole (42b), the other side is a portion that is engaged with the hook portion 411 of the holder (410).

The adjustment handle 430, the end is hooked to the space 412 of the holder 410, is screwed to the hole of the support piece 23, the user to adjust the angle of the seat plate (4) Is the part that rotates by hand.

When explaining the operation sequence of the seat plate angle adjustment device 400 of the chair, when the user rotates the adjustment handle 430, the adjustment handle, which penetrates the hole of the support piece 23 and hangs on the space of the holder 410 ( 430) The end is pushed or pulled by the holder 410 to rotate the holder 410, and the locking member 420 caught in the hook portion 411 of the holder 410 is pulled in either direction and hinged shaft The support plate 41 is rotated around (21), and the angle of the seat plate 40 installed therewith can be adjusted.

The seat angle adjustment device (100, 200, 300, 400) of the chair according to an embodiment of the present invention in accordance with the technical idea of the present invention, the seat (4) installed in the chair (A) is rotatable, the chair ( A) It can be adjusted according to the angle of the user's preferred seat plate (4), the angle of the seat plate (4) can be adjusted in a state in which the entire level of the seat plate (4) is accurately adjusted, and the seat plate of the chair (A) (4) As the angle can be finely adjusted to the angle desired by the user, the chair (A) allows the user to straighten the waist when performing work, and when resting, the chair (A) is comfortable in the posture according to the user's rest It is an effect that allows the user's lower body to rest comfortably without slipping.

As described above, optimal embodiments have been disclosed in the drawings and specifications. Although specific terms are used herein, they are only used for the purpose of describing the present invention, and are not used to limit the meaning or limit the scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100, 200, 300, 400: Chair seat angle adjustment device
110: adjustment handle 111: drive gear
120: cam 121: driven gear
210: rotating member 211: clasp
220: adjustment handle 310: gear case
311: guide groove 320: adjustment handle
321: handle shaft 330: worm
340: worm gear 350: gear shaft
360: lifting member 361: guide projection
410: holder 411: hook
412: space 420: a locking member
430: adjustable handle

Claims (1)

The front supporter 11 is attached to the lower portion and is formed to be inclined rearward, and the rear end is bent at an angle to be fixed horizontally from the middle of the basic support leg 1 and fixed to the hinge hinge shaft 21 at one side ) Is fixed, the horizontal support bar (2), the rear caster (31) is attached to the lower and bent forwardly bent and the rear support leg (3), the upper end is attached to the horizontal support bar (2), the horizontal support bar (2) A hinge plate for fixing the hinge fixing shaft 21 fixed to the hinge fixing hole 42a to which the hinge fixing fixture 42 is formed is attached to the bottom surface 4, the rear end of the basic supporting leg 1 In the folding chair (A) consisting of a hinge pivoting part (5) fixed to the upper end and a waist support plate (6) fixed between the hinge pivoting parts (5), the seat plate (4) on the bottom support plate (41) Installed in the seat plate angle adjustment device 300 of the chair for adjusting the seat angle of the chair,
The seat angle adjustment device 300 of the chair,
A gear case 310 coupled to the horizontal support bar 2 and having an accommodation space formed therein;
The handle shaft 321 is axially coupled to penetrate the gear case 310, and the adjusting handle 320 is rotated by a user's hand to adjust the angle of the seat plate 4;
A worm 330 accommodated in an accommodation space of the gear case 310 while being axially coupled to the handle shaft 321;
A worm gear 340 accommodated in an accommodation space of the gear case 310 so as to mesh with the worm 330;
A gear shaft 350 coupled to the worm gear 340 and having a thread formed thereon; And
When the worm gear 340 is rotated by being screwed with a screw thread of the gear shaft 350, it moves in the upper and lower directions, and is in contact with one side of the support plate 41 to adjust the angle of the seat plate 4 (360) ); Seat angle adjustment device for a chair, characterized in that it comprises a.

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