KR101192254B1 - apparatus for adjusting a tilting limit angle of chair - Google Patents

Abstract

The present invention relates to a tilting angle control device of the chair. Specifically, the tilting case 110, a back connecting bracket 120 hinged to the tilting case and connected to the back plate, an elastic body 130 installed in the tilting case to apply a tilting restoring force to the back connecting bracket, It includes a limit block 140 fixed to the lower portion of the back connection bracket, a limit rocker 150 fixed in the tilting case, a first arm portion to be applied to the limit block and a second arm portion to be applied to the limit rocker A stopper 160 rotatably coupled to the tilting case, and a handle shaft 170 fixed to an intermediate center of rotation of the stopper to adjust a tilting angle at which the stopper can be tilted by rotating the stopper. According to this configuration, it is possible to easily set the limit angle that can be tilted according to the user can determine the tilt angle conditions according to the user's preference.

Description

{Apparatus for adjusting a tilting limit angle of chair}

The present invention relates to a tilting angle control device of the chair, and more particularly to a tilting angle control device of the chair that can easily set the tilting angle to be tilted according to the user.

In general, the chair is coupled to the back plate and the seat plate at a predetermined angle, and the legs are coupled to the lower side of the seat plate, and the seat plate and the back plate are wrapped by an outer shell in which a cushion member such as a sponge is built, and the user stretches the back plate. In order to make the back tilted back is disclosed a lot of structures that tilt the back.

Such chairs have a back plate and a seat plate integrally formed to be tiltable, or the back plate and the seat plate are separated to be tiltable.

1 shows a chair in which a conventional back plate and a seat plate are separated. As shown in the drawing, a tilting case 4 having a tilting mechanism coupled thereto is installed at a lower side of the seat plate 2, and a connector 6 is connected to the tilting mechanism of the tilting case 4, and the connector 6 is connected to the tilting case 4. The back plate 8 is connected to stand, the rotary leg 10 is coupled to the lower side of the tilting case (4).

The tilting mechanism includes a tilting strength adjusting part for adjusting the tilting strength of the back plate, and the tilting strength adjusting part is configured to adjust the tilting strength by changing the length of the coil spring by rotating the adjusting bolt made of a triangular screw.

In the conventional chair configured as described above, when the user is seated and presses the back plate connected to the connector 6 backward, the whole back plate 8 is pivoted by a predetermined angle around the hinge point A. At this time, since the seat plate 2 is fixed to the tilting case 4, there is no change in position and angle. When the force for pressing the back plate 8 is removed, the back plate 8 and the connector 6 are restored to their original positions by the springs provided in the tilting mechanism.

However, in the conventional tilting mechanism of the chair, since it is impossible to set a tilting angle that can be tilted according to the user, there is a problem that it is difficult to determine the tilting angle according to the preference of each user.

The present invention has been made to solve the above problems, and an object of the present invention is to easily set a limit angle that can be tilted according to the user to adjust the tilt angle of the chair that can determine the tilt angle conditions according to the user's preference To provide a device.

Tilting limit angle adjustment device of the chair according to the present invention for achieving the above object, the tilting case, the back connection bracket hinged to the tilting case is connected to the back plate, and to apply a tilting restoring force to the back connection bracket An elastic body installed in the tilting case, a limit block fixed to the lower part of the back connecting bracket, a limit rocker fixed in the tilting case, a first arm part caught by the limit block, and a second arm part caught by the limit rocker And a stopper pivotably coupled to the tilting case, and a handle shaft fixed to an intermediate rotation center of the stopper to adjust a tilting angle at which the stopper can be tilted by rotating the stopper.

In the limit block, as the stopper rotates to rotate the handle shaft, a plurality of guide grooves may be sequentially formed to allow the back connecting bracket to rotate at a large angle to be caught at the end of the first arm portion. As the stopper rotates, a plurality of stop grooves which always catch the end of the second arm portion are sequentially formed.

Protruding portions are formed on both side portions (lower portion and upper portion) of the limit rocker to prevent the stopper from rotating.

According to the tilting angle control device of the chair according to the present invention, it is possible to easily set the tilting angle according to the user to determine the tilting angle conditions according to the user's preference.

1 is a schematic configuration diagram showing a conventional tiltable chair;
2 is a block diagram showing a tilting angle control device of the chair according to the present invention;
3 is a plan view of FIG. 2;
4 is a view showing the main part of the tilting angle control device of the chair according to the present invention;
Figure 5 (b) and (b) is a tilting action state diagram in the tilting angle control device according to the present invention,
Figure 6 (a) to (c) is a state of adjustment of the tilting limit angle in the tilting limit angle control apparatus according to the present invention,
7 (a) to 7 (c) are state diagrams tilted to the tilting limit angle in FIGS. 6 (a) to 6 (c).

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a tilting angle control device of the chair according to the present invention, Figure 3 is a plan view of FIG. As shown in the drawing, the tilt connection case 120 connected to the back plate (not shown) is hinged to the tilting case 110 of the tilting limit angle control device 100 of the present invention, and in the tilting case 110. An elastic body 130 for applying a tilting restoring force is installed on the back connection bracket 120, and a limit block 140 is fixed to the bottom of the back connection bracket 120, and the limit block is inside the tilting case 110. A limit locker 150 corresponding to 140 is fixed, and the first arm part 161 applied to the limit block 140 and the second arm part 162 applied to the limit locker 150 are fixed. The stopper 160 provided is pivotally coupled to the tilting case 110 (see FIG. 4), and the intermediate rotation of the stopper 160 is adjusted to adjust the tilting angle which can be tilted by rotating the stopper 160. In the center of the handle shaft 170 to the outside of the tilting case 110 It is fixed to protrude.

One end of the seat plate pedestal 181 to which a seat plate (not shown) is fixed to one side end of the tilting case 110 is hinged, and the other end of the seat plate pedestal 181 is on the top of the back connection bracket 120. Hinged.

A fixing bracket 182 to which one end of the elastic body 130 is coupled is fixed to the lower portion of the back connecting bracket 120, and the limit block 140 is fixed to one side of the fixing bracket 182.

The first hinge shaft 183 is installed on both side walls of the middle portion of the tilting case 110 in the width direction so that the middle portion of the back connecting bracket 120 is hinged, and the upper portion of the tilting case 110 is in the width direction. A second hinge shaft 184 is installed across both side walls so that one end of the seat plate bracket 181 is hinged.

The back connection bracket 120 has a lower part 121 having a base 121a on which the fixing bracket 182 and the limit block 140 are seated, and an upper part 122 having a back connector 122a to which the back plate is connected. ) Is formed so as to swing around the first hinge shaft 183, and a third hinge shaft 185 is installed at the upper portion 122 to be hinged to the other end of the seat plate support 181. . The lower portion 121 of the back connecting bracket 120 is inserted into the tilting case 110 and hinged to the tilting case 110.

The boss portion 123 is inserted into the back connection bracket 120 so that the first hinge shaft 181 is inserted and rotated in a portion where the first hinge shaft 181 is inserted in the back connection bracket 120. It is formed by protruding.

The fixing bracket 182 is installed to move the movable body 186 in the up and down direction, and is provided with a control means (not shown) for moving the movable body 186 to adjust the position of the movable body 186. The adjusting means may include an electric screw member coupled to the movable screw to the movable body, an adjusting handle shaft for rotating the electric screw member, a drive gear fixed to the adjusting handle shaft, and a driven gear fixed to the electric screw member. have.

The elastic body 130 is a compression coil spring, and is installed between the middle portion of the second hinge shaft 184 and the movable body 186 via a mounting means.

As shown in FIG. 4, as the stopper 160 rotates by rotating the handle shaft 170 on the outer surface of the limit block 140, the back connecting bracket 120 gradually rotates at a large angle. A plurality of guide grooves (141: first guide groove, 142: second guide groove, 143: third guide groove) that can be caught at the end of the first arm portion 161 are sequentially formed from the upper side to the lower side, On the outer surface of the limit rocker 150, a plurality of stop grooves (151: first stop groove, 152: second stop groove, 153) at which the end of the second arm portion 162 is always caught as the stopper 160 rotates. The third stop groove is sequentially formed along the circumferential direction of drawing a circle at the rotation center 170 of the stopper 160.

The stopper 160 is prevented from rotating on both side portions (lower portion and upper portion) of the limit rocker 150, that is, the lower side of the first stop groove 151 and the upper side of the third stop groove 153. The projections 154 (lower projections, 155: upper projections) are formed.

At the outer end of the tilting case of the handle shaft 170, a handle portion 172 having a prismatic (triangular prism) shape is formed to allow the user to easily grasp the handle shaft 170 and rotate the handle shaft 170.

FIG. 5A shows the state before the chair is tilted, and FIG. 5B shows the state when the user sits on the seat plate of the chair and tilts the back of the chair.

As shown, since the back connecting bracket 120 and the seat plate bracket 181 are hinged at the third hinge shaft 185, when the user sits on the seat plate, the seat plate bracket 181 is second hinge shaft 184. Since the back connection bracket 120 is rotated and tilted using the first hinge shaft 183 as the hinge point while rotating as the hinge point, it may be easily tilted even when the force applied to the back plate is small.

6 (a) shows that the end of the first arm portion 161 of the stopper 160 is caught by the first guide groove 141 of the limit block 140 and the end of the second arm portion 162 of the stopper 160 is closed. It is a state caught in the first stop groove 151 of the limit rocker 150, the back connection bracket 120 that rotates around the first hinge shaft 183 is constrained and can not be tilted (Fig. 7 ( in the same state as a).

6 (b) shows that the stopper 160 rotates clockwise with the handle shaft 170 at the center of rotation so that the end of the first arm portion 161 is the second guide groove (of the limit block 140). 142 is spaced apart from the end of the second arm portion 162 of the stopper 160 in the second stop groove 152 of the limit rocker 150, a predetermined angle around the first hinge shaft (183) The second guide groove 142 is in close contact with the end of the first arm portion 161 when it is rotated (tilted), and thus has a predetermined tilting limit angle.

7 (b) is a state in which the tilting angle to the tilting limit angle in Figure 6 (b), that is, the back connection bracket 120 is rotated to the tilting limit angle so that the end of the first arm portion 161 is the limit block 140 It shows a state in close contact with the second guide groove 142 of.

6 (c) shows that the stopper 160 further rotates clockwise with the handle shaft 170 at the center of rotation so that the end of the first arm portion 161 is the third guide groove of the limit block 140. Further spaced at 143, the end of the second arm portion 162 of the stopper 160 is caught in the third stop groove 153 of the limit rocker 150, and is positioned around the first hinge shaft 183. When the rotation (tilting) at a predetermined angle larger than 6 (b) is the third guide groove 143 close to the end of the first arm portion 161 is caught tightly larger than the tilting limit of Figure 6 (b) Has an angle.

7 (c) is a state in which the tilt of the tilting angle to the tilting limit angle in Fig. 6 (c), that is, the back connection bracket 120 is rotated to the tilting limit angle so that the end of the first arm portion 161 is the limit block 140 It shows a state in close contact with the third guide groove 142.

According to the tilting angle control device of the chair according to the present invention, it is possible to easily set the limit angle that can be tilted according to the user can determine the tilting angle conditions according to the user's preference.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. The scope of the technical protection shall be determined by the technical idea of the appended claims.

100: tilting angle control device 110: tilting case
120: back connection bracket 130: elastic body
140: limit block 141: the first guide groove
142: the second guide home 143: the third guide home
150: limit rocker 151: first stop groove
152: second stop groove 153: third stop groove
160: stopper 161: first arm portion
162: second arm portion 170: handle shaft
181: seat plate support 182: fixing bracket
183: first hinge axis 184: second hinge axis
185: third hinge axis 186: mobile body

Claims (3)

With tilting case,
A back connection bracket hinged to the tilting case and connected to the back plate;
An elastic body installed in the tilting case to apply a tilting restoring force to the back connecting bracket;
A limit block fixed to the lower portion of the back connecting bracket;
A limit rocker fixed in the tilting case;
A stopper having a first arm portion caught by the limit block and a second arm portion caught by the limit rocker, and rotatably coupled to the tilting case;
And a steering shaft fixed to an intermediate center of rotation of the stopper to adjust the tilting angle which can be tilted by rotating the stopper. The method according to claim 1,
As the stopper rotates the handle shaft to rotate the handle shaft, a plurality of guide grooves may be sequentially formed in the limit block so that the back connecting bracket may be gradually rotated at a large angle to be caught at the end of the first arm portion.
The limit rocker chair tilt limit angle adjustment device characterized in that the stopper is rotated in order to form a plurality of stop grooves that always take the end of the second arm portion. The method according to claim 2,
Tilt limit angle control device of the chair, characterized in that the protrusions are formed on both sides of the limit rocker to prevent the stopper from rotating.

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