KR200385119Y1 - apparatus for forwarding of a tilting-chair - Google Patents

Abstract

In the forwarding device of the tiltable chair according to the present invention, a tilting case having a tilting mechanism coupled therein is coupled to a lower side of the seat plate, and a seat connector connected to the back plate connector connected to the back plate and the seat plate at the tilting mechanism of the tilting case. In the tiltable chair combined with, the hinge shaft 116 is connected to the back connector and the seat plate connector, the bushing bracket 118 coupled to the hinge axis to support it, and the back plate and the seat plate at a predetermined angle The lever 122 connected to the bush bracket to slide intermittently along the outer side of the bush bracket to lean forward, the forwarding block 124 coupled to the shaft to which the bush bracket is connected, and the forwarding block to be caught A forwarding arm 128 protruding from a hinge axis, and an axis to which the bushing bracket is connected to apply a restoring force to the forwarding block. Since it includes a forwarding spring 120 is installed, it is convenient to reduce the number of parts and operate in a compact structure.

Description

Apparatus for forwarding of a tilting-chair}

The present invention relates to a tilting range adjustment device of the tiltable chair.

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 in an outer shell in which a cushion member such as a sponge is built, and the user stretches the back. In order to do so, the back is tilted backwards.

When the user is seated in the conventional tiltable chair and presses the back to the back, the entire back is pivoted at a predetermined angle around the hinge point. At this time, since the seat plate is fixed to the tilting case, there is no change in position and angle. When the force for pressing the back plate is removed, the back plate is restored to its original position by an elastic body (spring or torsion spring) provided in the tilting mechanism.

Conventional tiltable chairs do not have the function of restraining the inclination of the back forward, there is a problem that the user is uncomfortable for a long time to work on the computer.

To solve this problem, a tilting chair forwarding device for restraining the user from using the computer for a long time by selectively restraining the back of the back when tilting is registered as Korean Utility Model Registration No. 0315975. The forwarding device disclosed in Utility Model Registration No. 0315975 is applied to the tiltable chair shown in FIG. 1, and is installed inside the tilting case as shown in FIG.

As shown in FIG. 1, the tilting case 18 is fixed to the rotary shaft 16 of the chair leg 14 at the lower side of the seat plate 12, and the back connector 36 is installed at the rear side of the seat plate 12. The back plate 20 supporting the user's back is installed, and the first hinge shaft 24 is hinged to the lower front of the seat plate 12, and the second hinge shaft (behind the rear plate of the seat plate 12). 26 is hinged, a third hinge shaft 28 is hinged to the front of the tilting case 18, the fourth hinge shaft 30 is hinged to the rear of the tilting case 18, The first hinge shaft 24 and the third hinge shaft 28 are connected by the front link 32, and the second hinge shaft 26 and the fourth hinge shaft 30 are connected by the rear link 34. In connection, the seat plate 12, the tilting case 18, the front link 32 and the rear link 32 is a kinematic linkage mechanism.

As shown in FIG. 2, the third hinge shaft 28 is supported at the front of the tilting case 18, and the fourth hinge shaft 30 is supported at the rear of the tilting case 18. The middle portion of the third hinge shaft 28 is provided with a back restoring elastic body 38 for restoring the back plate 20 by applying a restoring force to the front link 32 and the back connector 36. One side of the shaft 28 is coupled to the tilting range adjusting unit 40 for adjusting the tilting range of the back plate 20, the one side of the back restoring elastic body 38 is changed to tilt the elastic strength of the back restoring elastic body Tilting strength adjusting unit 50 to adjust the strength is coupled, the other side of the third hinge shaft 28 is coupled to the forwarding device 60 to selectively restrain the back plate 20 is tilted forward.

As shown in FIG. 3, the forwarding device 60 includes a locking mechanism 62 fixed to the third hinge shaft 28 and protruding in a radial direction of the third hinge shaft 28. The restraint block 64 restrains the end of the locking hole 62 so that the 62 does not rotate in one direction, and the rocking member 68 is connected to the restraint block 64 via a rod 66. It is a structure having a handle 72 for rocking the rocking member (68).

The locking hole 62 is a cam-shaped member fitted to the third hinge shaft 28 and fixed. The restraining block 64 is a member that receives the bottom of the locking device 62 or is separated from the locking device 62 according to the swinging of the rocking member 68, and is guided by a guide unit (not shown). The restraining block 64 is movably coupled along the rod 66 to adjust the distance between the restraining block 64 and the swinging member 68, and the restraining block 64 and the swinging member 68. ) Between the elastic block 74, that is, the coil spring is applied to the rod 66. The restraint block 64 and the rod 66 are coupled with a power screw, so that the restraint block 64 moves in a linear motion according to the rotation of the rod 66. The swinging member 68 is fixed to the pivot shaft 78 to which the handle 72 is fixed. The swinging member 68 is adjacent to the swinging member 68 and contacts the guide surface of the guide member 82. The cam 84 which slides in a fixed manner is fixed.

However, the conventional forwarding device configured as described above has a problem in that the number of parts, the structure of the electric screw, etc. are complicated, not compact, and inconvenient to operate.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a forwarding device of a tiltable chair that is convenient to reduce the number of parts and to operate in a compact structure.

The forwarding device of the tiltable chair according to the present invention for achieving the above object, the lower side of the seat plate is coupled to the tilting case coupled to the tilting mechanism therein, the tilting mechanism of the tilting case and the back connector is connected to the back plate A tiltable chair having a seat plate connector coupled to a seat plate, the tiltable chair comprising: a hinge axis to which the back plate connector and the seat plate connector are connected; a bush bracket coupled to and supporting the hinge axis; and the back plate and the seat plate at a predetermined angle. A lever connected to the bush bracket to slide intermittently along the outer side of the bush bracket so as to lean forward, a forwarding block coupled to the shaft to which the bush bracket is connected, and a forwarding protruding from the hinge shaft to catch the forwarding block. The bushing bracket is connected to the arm and the forwarding block to apply a restoring force. It includes a forward spring installed on the shaft.

The bush bracket and the lever are connected to each other by a forwarding pin, and the bush bracket is provided with a long hole through which the forwarding pin moves according to the rotation of the lever. It is formed at intervals of.

The catch is fitted to the outside of the forwarding pin is installed, one side of the catch is installed a spring for applying an elastic force.

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

As shown in FIG. 4, the tilting case 108 is fixed to the rotary shaft 106 of the chair leg 104 at the lower side of the seat plate 102, and the back of the seat plate 102 supports the user's back. The back plate 110 is installed, and both sides of the seat plate 102 are provided with armrests 112, the height of which can be adjusted. In addition, the back plate of the back plate 102 is provided with an auxiliary back plate 114 that supports the lumbar spine of the user by the auxiliary back connector. The tilting mechanism of the tilting case 108 is coupled to a back plate connector 111 connected to the back plate 110 and a seat plate connector 103 connected to the seat plate 102.

Inside the tilting case 108, in addition to a forwarding device that flips the back plate and the seat plate forward at a predetermined angle, a tilting range adjusting unit for adjusting the tilting range of the back plate, a back restoring elastic body restoring the back plate, and the back restoring Tilting strength control unit for adjusting the tilting strength by changing the elastic strength of the elastic body, auxiliary backrest restoration elastic body for restoring the auxiliary back, lumbar support weakness control unit for adjusting the strength of the lumbar support, the auxiliary back tilts more than a predetermined angle forward A lumbar support locking part may be additionally installed so as not to be locked. Hereinafter, only the forwarding device will be described in detail. The remaining general configuration installed in the tilting case is disclosed in Korean Patent Laid-Open No. 2004-0049039.

As shown in FIG. 5, a hinge shaft 116 is installed at the front of the tilting case 108 to which the back connector 111 and the seat plate connector 103 are connected, and the hinge shaft 116 supports it. The bush bracket 118 (see FIGS. 6 to 8) is coupled to the bush bracket 118 and intermittently slides along the outside of the bush bracket 118 so as to flip the back plate and the seat plate forward at a predetermined angle. A fork lever 122 is connected to the shaft 130 to which the bush bracket 118 is connected, and a forwarding block 124 to which a forwarding arm to be described later is coupled, and the forwarding block 124 is connected to the hinge shaft 116. The forwarding arm 128 is formed to protrude, and the forwarding spring 120 for applying a restoring force to the forwarding block 124 is installed on the shaft 130 to which the bush bracket 118 is connected. In addition, the shaft 130 is provided with a tilting angle adjustment cam 126 for adjusting the tilting angle of the tilting range adjustment unit (not shown).

As illustrated in FIGS. 7 and 8, the bush bracket 118 protrudes from the outer surface of the semi-cylindrical portion 132 in close contact with the outer surface of the hinge shaft 116 in the form of a reinforcing flange. It is structured.

 The bush bracket 118 and the lever 122 are connected to each other by a forwarding pin 136 passing through the out bush portion 134, and the out bush portion 134 through which the forwarding pin 136 passes. The long hole 134a is formed to move the forwarding pin 136 in accordance with the rotation of the lever 122, while the locking groove 134b intermittently close by the engaging hole 138 along the long hole 134a. It is formed at predetermined intervals. The out bush portion 134 is formed with a hole 134c into which the shaft 130 is fitted.

The forwarding spring 120 is a torsion spring which is applied at both ends of the forwarding pin 136 and the forwarding block 124, and the forwarding block 124 is hooked to the forwarding arm 128 and released. In form.

As shown in FIG. 7, the lever 122 is divided into two sides (upper and lower sides) so as to surround and assemble the semi-cylindrical portion 132 of the bush bracket 118. The handle portion 142 protrudes from the 140. A plurality of ribs 140a are formed inside the cylindrical portion 140 to increase the rigidity while the semi-cylindrical portion 132 is fastened, and the connecting portion to which the forwarding pin 136 is fitted is installed in the cylindrical portion 140. 140b is formed. The head portion of the forwarding pin 136 is formed with a hole 136a to which one end of the forwarding spring 120 is fitted.

The latch 138 is fitted to the outside of the forwarding pin 136, a spring 144 for applying an elastic force is installed on one side of the latch 138. One end of the locking hole 138 is formed with an inclined surface or a chamfer (chamfer) to be easily caught in the locking groove (134b).

In the forwarding device of the tiltable chair according to the present invention configured as described above, the forwarding function is operated by the lever 122. That is, when the lever 122 is rotated, the forwarding spring 120 obtains an elastic force and the forwarding block 124 rotates to release the restraint of the forwarding arm 128 so that the seat plate and the back plate are flipped forward at a predetermined angle. .

9A shows a general state in which the seat plate and the back plate are not forwarded. At this time, the forwarding block 124 is caught in the forwarding arm 128. Rotating the lever 122 in such a state releases the restraint of the forwarding arm 128 as shown in Fig. 9B, so that the seat plate 102 and the back plate 110 are inclined at a predetermined angle. In this case, the back plate 110 is inclined by about 7 degrees and the seat plate 102 is inclined by about 5 degrees. The degree of inclination is determined by the link ratio of the back connector 111 and the seat plate connector 103.

When the lever 122 is rotated, the forwarding pin 136 rides through the long hole 134a of the bush bracket 118, and the catch 138 stops at the catch groove 134b, and the spring 144 catches the catch ( Since the 138 is being pushed, the latch 138 does not come out by itself.

When the forwarding pin 136 moves as the lever 122 rotates, the forwarding spring 120 is compressed to obtain an elastic force, and the forwarding block 124 tries to rotate by the elastic force. 124 is caught in the forwarding arm 128 so that it is not rotated. At this time, when the user pushes the back plate 110 backward, the forwarding block 124 is removed from the forwarding arm 128. When the forwarding arm 128 is released from restraint, a repulsive force acts on the hinge axis 116, causing the forwarding arm 128 to rotate. The forwarding spring 120 serves to temporarily hold the elastic energy generated by the rotation of the lever 122, thereby preventing the back plate or the seat plate from moving when the lever 122 rotates.

The forwarding device of the tiltable chair according to the present invention has an effect of being compact compared to the conventional structure and reducing the number of parts and being convenient to operate.

1 is a schematic configuration diagram showing a tiltable chair to which a conventional forwarding device is applied;

2 is a perspective view showing a tilting mechanism coupled to the inside of the tilting case of FIG. 1;

3 is a perspective view showing the forwarding device of FIG.

4 is a schematic configuration diagram showing a tiltable chair to which a forwarding device according to the present invention is applied;

FIG. 5 is a partial perspective view illustrating the inside of the tilting case in which the forwarding device of FIG. 4 is installed; FIG.

6 is an exploded perspective view showing the forwarding device of FIG. 5;

7 is a perspective view illustrating the bush bracket and the lever of FIG. 6;

8 is a perspective view showing the rear side of the bush bracket of FIG. 7;

9a and 9b is an operational state diagram of the forwarding device of the tiltable chair according to the present invention.

<Description of the symbols for the main parts of the drawings>

108: tilting case 116: hinge axis

118: bush bracket 120: forwarding spring

122: lever 124: forwarding block

128: forwarding arm 136: forwarding pin

138: latch 142: spring

Claims (3)

 In the tilting chair is coupled to the lower side of the seat plate and the tilting case coupled to the tilting mechanism therein, the tilting mechanism of the tilting case is coupled to the back connector connected to the back plate and the seat plate connector connected to the seat plate, A hinge axis to which the back connector and the seat plate connector are connected, a bush bracket coupled to and supporting the hinge axis, and intermittently sliding along the outside of the bush bracket to flip the back plate and the seat plate forward at a predetermined angle. A lever connected to the bush bracket, a forwarding block coupled to the shaft to which the bush bracket is connected, a forwarding arm protruding from the hinge shaft to engage the forwarding block, and the bushing bracket to apply a restoring force to the forwarding block. The forwarding device of the tiltable chair, characterized in that it comprises a forwarding spring installed on the connecting shaft. The method of claim 1, The bush bracket and the lever are connected to each other by a forwarding pin, and the bush bracket is provided with a long hole through which the forwarding pin moves according to the rotation of the lever. The forwarding device of the tiltable chair, characterized in that formed at intervals of. The method of claim 2,  The locking device is fitted to the outside of the forwarding pin is installed, the forwarding device of the tiltable chair, characterized in that a spring for applying an elastic force is installed on one side of the locking port.