KR20030050541A - Apparatus to control angle of the back of chair - Google Patents

Abstract

PURPOSE: Provided is an angle adjuster in a back of a chair which lets a back sheet of the chair moved freely so that it helps users to relieve one's fatigue. CONSTITUTION: The angle adjuster in the back of the chair comprises the parts of: a support pipe(10) which is combined with armrests(12) at both sides; a head rest(90) which lets an insertion hole(91) formed at upper edge of the support pipe; a bracket which is fixed at a nut pipe(21), with forming a penetration hole at both sides; a support piece(30) which is fixed at the bracket by a bolt(32), with forming a penetration hole and a circular groove; a spring(S) which lets the support pipe moved freely; a control tool(50) which controls rotation of the spring; a connection pole which lets a binding hole and an adjusting hole formed; an adjusting pipe(70) which lets the back sheet moved restrictively by controlling an adjusting screw(74); and a fixed piece(80) which is fixed by a bolt pipe of a fixed grip(101) in a state that one edge of the fixed piece is inserted into a support bar for back(100).

Description

Apparatus to control angle of the back of chair}

The present invention relates to an angle adjusting device of the chair back.

The present invention is to free the limited movement of the backrest plate is installed chair backrest to increase the width of the upper body can move to ease the fatigue of the rigid upper body in the state sitting on the chair.

The chair currently being provided is designed to keep the back of the chair in close contact with the upper body so that the upper body can maintain a comfortable and stable posture for a long time.

To this end, the present applicant is used to support the back of a functionally divided functional backrest, and a chair back support for a structure for allowing the upper body and the back to be in close contact with each other (Application No. 20-1999-23769, 20-1999-23771). ) And many others.

The support for the chair back is easy to assemble and install due to its simple structure, which makes the back support of the divided functional chair more stable, and in particular, the close contact structure of the back supports maximizes the comfort of the chair, and the function of the functional chair by the back support. It is recognized that the unique effect to enhance the level of the job is widely used in business and learning suspects.

However, the chair back support supports the seat back so that the back of the divided chair moves flexibly according to the flexion of the upper body so that it can be closely seated for work or learning. When you see the result will cause a strain on the body and usually get up from the chair to relax the rigid body from time to time, such as a simple stretch.

However, this method has to worry about breaking the work or learning environment because it must get up and move from the chair, and also have to consider the surrounding conditions such as leaving the current place for simple rest and stretching. .

An object of the present invention is to free the limited movement of the backrest plate is installed chair backrest to increase the width of the upper body can move to ease the fatigue of the rigid upper body seated in the chair.

The present invention for achieving the above object is bent armrests formed on both sides of the upper coupled to the support tube formed in the bottom fitting tube, the insertion hole is coupled to the upper end of the support tube is formed to be movable up and down of the support tube Bracket is installed in close contact with the rest, the nut pipe fixed to the center of the back of the back plate, and the through hole is formed on both sides, the through hole corresponding to the through hole of the bracket and the annular groove is formed in the center, the bottom of the support tube is accommodated inside the ring groove A support piece that is tightly fixed to the bracket by a low bolt, a spring installed at the bottom of the support pipe and coupled to a fitting pipe of the support pipe inside the top to freely move the support pipe, and a bottom of the spring. The control unit is installed and coupled to control the radius of rotation of the spring is installed with one end inserted inside the spring, the bottom of the control The connecting rod is formed on the upper surface, the connecting rod is formed in the upper and lower sides of the coupling rod, and the slot hole is formed in the center and the bolt hole is inserted into the adjustment screw on one side of the outer periphery and the connecting rod is inserted inside the slide hole. A control tube for controlling the movement of the back plate by the adjustment fixing of the adjustment screw, and the support hole and the bottom of the connecting rod is inserted and fixed in the state in which the control tube is annular, the fixing hole is formed It is intended to provide a series of related configurations comprising a fixing piece fixed by a bolt tube of a fixing handle with one end inserted into a backrest support installed in a seat bottom.

1 is a rear perspective view of the present invention

2 is an exploded perspective view of the present invention

Figure 3 is an excerpt cross-sectional view showing the operating state of the control device of the present invention

Figure 4 is a side view showing a combined state of the present invention

5 is a cross-sectional configuration of the present invention

Figure 6 is a cross-sectional view showing a state for using the chair back as usual by the present invention control tube

Figure 7a, 7b is a side configuration of the chair for showing the operating state of the present invention

* Description of the symbols for the main parts of the drawings *

10: support tube 11: fitting tube

12: armrest stand 20: backrest plate

21: nut pipe 30: support piece

31,41: Hole 32: Bolt

33: round groove 40: bracket

50: control unit 51: receiving groove

52: angle control rod 53: coupling portion

54: bolt pipe 60: connecting rod

61: fastening hole 62: adjustment hole

70: control tube 71: slide ball

72: expansion 73: long hole

74: adjusting screw 80: fixing piece

81: support hole 82: fixing hole

90: headrest 91: insertion hole

100: support 101: fixed handle

The present invention is the support arm 10 is formed on both sides of the upper bent armrest stand 12 is coupled to the bottom fitting tube 11 and the insertion hole 91 is coupled to the upper end of the support tube 10 is formed A bracket in which the headrest 90 coupled to the upper and lower sides of the support tube 10 and the nut tube 21 fixed to the center of the back surface of the backrest plate 20 are installed in close contact with each other, and through holes 41 are formed at both sides. 40, a through hole 31 corresponding to the through hole 41 of the bracket 40, and an annular groove 33 is formed in the center thereof, so that the bottom of the support tube 10 is accommodated inside the annular groove 33. The support piece 30 which is tightly fixed to the bracket 40 by the 32 and the fitting pipe 11 of the support pipe 10 are installed at the bottom of the support pipe 10, and the support pipe 10 is coupled to the upper inside of the support pipe. The spring (S) coupled to allow the movement of the (10) freely, and is installed at the bottom of the spring (S) and installed with one end inserted into the spring (S) to rotate the spring (S) Control rod 50 coupled to control the diameter, and the connecting rod 60 is formed on the upper surface of the fastening hole 61 is fastened to the bottom of the control sphere 50 and the adjustment hole 62 is formed on the upper and lower ends of the outer periphery. And, the slide hole 71 is formed in the center and the long hole 73 is formed in the bolt pipe of the adjustment screw 74 is formed on one side of the outer circumference in the state that the connecting rod 60 is inserted into the slide hole 71 The control rod 70 and the connecting rod 60 in a state in which the control tube 70 and the control tube 70 are arranged to be movable in the vertical direction and control the movement of the backrest plate 20 by the adjustment fixing of the adjustment screw 74. A fixing hole 82 is formed at one side of the support hole 81 and the bottom of which is fixed and inserted into the back support 100 installed at the bottom of the seat, and is fixed by the bolt tube of the fixing handle 101. It is a structure composed of a piece (80).

The present invention overcomes the limitations on the flow of the backrest plate 20 so that the user who is sitting on the chair for a long time watching the work does not have to get out of the chair or deviate from the current position to release the rigid muscles. To make it easier to solve.

Such an angle adjusting means of the backrest plate 20 of the present invention is that the angle control rod 52 of the control tool 50 is operated with a constant rotation radius with respect to the movement of the backrest plate 20 and the spring (S) It is also closely related to the original return by elastic force.

The present invention maintains the basic chair structure, such as the back plate 20 that is coupled to the divided backrest, as well as the structure of the seat and the leg for constituting the chair.

However, in the present invention, the armrest stand 12 is not installed on both sides of the seat and is bent and coupled to the support tube 10 installed at the rear of the backrest plate 20.

This is to allow the user to easily adjust the movement of the upper body in any direction while holding the upper body to the backrest by holding both sides of the armrest 12.

The support tube 10 is firmly fixed to the backrest plate 20 by the bracket 40 and the support piece 30, and the nut tube 21 having the bracket 40 fixed to the center of the rear surface of the backrest plate 20 is provided. The bottom of the support tube 10 into the annular groove 33 of the support piece 30, and then contact the bracket 40 with the bolt 32 and the through holes 31 and 41 of the support piece 30. By fastening through the support tube 10 is firmly fixed to the backrest plate (20).

On the other hand, the bottom of the support tube 10 is coupled to the fitting tube 11 of the support tube 10 in a state inserted into the upper inside of the spring (S), the backrest plate 20 and both armrests 12 is coupled The movement of the supported support tube 10 is made free.

Of course, the support by the spring (S) can expand the flow width of the support tube 10, but in consideration of the stability of the chair, one end is inserted into the inside of the spring (S) at the bottom of the spring (S) The control tool 50 is installed to be installed to control the rotation radius of the spring (S) is installed.

The control port 50 is formed with a receiving groove 51 which is connected to the center of the upper surface opened inside the ball-type coupling portion 53 is connected to the angle control rod 52 at one end thereof, the connecting rod 60 in the center of the bottom Bolt tube 54 for fastening and fastening to the fastening hole 61 of the joint structure is constructed so that the engaging portion 53 is in close contact with the inner circumference of the receiving groove 51 freely with respect to the movement of the angle control rod 52. Will be rotated.

The control tool 50 is coupled to the movement of the angle control rod 52 formed integrally with the coupling portion 53 as the ball type coupling portion 53 is matched with the circular receiving groove 51 formed in the inner side Since the part 53 is rotated with a constant rotation radius at the inner circumference of the receiving groove 51, the back plate 20 is moved in conformity with the movement of the support tube 10 to which the back plate 20 is coupled, and moves at the same time. When spaced apart by the restoring force of the spring (S) is the back plate 20 is naturally returned to the vertical state, the user can easily perform the stretching of the upper body with a small force by the elasticity accordingly.

And the bottom of the control tool 50 is a fastening hole 61 is fastened to the bottom of the control tool 50 is formed on the upper surface and the connecting rod 60, the control hole 62 is formed on the upper and lower outer periphery is coupled to the control tool Fixed handle 101 with the end of the bottom of the connecting rod 60 inserted into the back support 100 installed at the bottom of the seat so that not only the support of the 50 but also the upper configuration including the control tool 50 can be stably supported. Headrest 90, support tube 10, the control unit 50, the connecting rod (installed in the state inserted into the fixing hole 82 of the fixing piece 80 fixed by the bolt tube of the vertical) 60) as well as the configuration of the armrest stand 20 and the backrest is coupled to support the backrest plate 20 is good.

On the other hand, the outer circumference of the connecting rod 60 is slid to the upper and lower sides, and the adjustment pipe 70 for allowing only the movement of the back plate 20 to the front and rear by adjusting the adjustment of the adjustment screw 74 is installed. Bar, the present invention control tube 70 is formed with a long hole in the extension portion 72 and the side extending the outer peripheral edge of the upper surface of the slide hole 71 to one side to control the flow width of the backrest plate 20 Not only can be made possible, it is possible to simplify the adjustment of the control tube 70 by the up and down movement.

5 is a cross-sectional configuration diagram of the present invention, which shows the state of a chair.

In this state, since the fixing of the adjusting screw 70 by the adjusting tube 70 is fastened to the bottom adjusting hole 62 of the connecting rod 60, the upper half of the spring S is integrally formed with the control tool 50. 6 is a state that is free to move with respect to the movement of the angle control rod 52 and Figure 6 is a cross-sectional view showing a state for using the chair back plate as usual by the control tube of the present invention, unlike in Figure 5 control tube 70 The bolt tube of the adjustment screw 74 to the upper adjustment hole 62 of the connecting rod 60 in the state of placing the upper side of the connecting rod 60 to the back plate by the extension 72 of the adjusting tube 70. Since the state before and after the movement of the 20 is also made possible, it is possible to maintain the state of the chair as usual, and the expansion portion of the mobility adjusting pipe 70 with respect to the angle control rod 52 of the control tool 50. (72) The backrest plate of the chair (2 0) Stabilize support so that you can maintain the right posture for work or learning.

Figure 7a, 7b is a side configuration diagram of a chair for showing the operating state of the present invention is the back plate 20 before and after, as well as in the left and right direction in a constant radius around the control port 50 It moves freely and the user can comfortably attach the upper body to the back of the chair to move the upper body freely in the direction to move, so that the fatigue of the upper body can be solved immediately while sitting on the chair and simple stretching, etc. You can exercise.

Accordingly, the chair of the present invention can fully exhibit its function as a fitness chair and can be used by controlling the flow width of the backrest plate 20 by the selective adjustment of the control tube 70. It has it.

As described above, the present invention has been illustrated and described with reference to certain preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications may be made by a person having the same authority.

The present invention overcomes the limited movement of the backrest plate with a simple structure to free the movement of the backrest plate so as to ease the fatigue of the rigid upper body while sitting on a chair, as well as simple stretching using the chair of the present invention. It is possible to easily exercise the back.

Claims (3)

The support arm 10 formed by bending the armrest stand 12 is bent on both sides and the fitting tube 11 is formed on the bottom, and the insertion hole 91 is formed to be coupled to the upper end of the support tube 10 is formed up and down The bracket 40 is installed in close contact with the movable headrest 90, the nut tube 21 fixed to the center of the back of the back plate 20, and the through hole 41 is formed on both sides thereof, and the bracket 40 The through hole 31 and the center of the annular groove (33) is formed in the center and the bottom of the support tube (10) accommodated in the inside of the annular groove (33) bracket (32) by the bolt 32 The support piece 30 which is tightly fixed to the support pipe 10 is installed at the bottom of the support pipe 10, and the fitting pipe 11 of the support pipe 10 is coupled to the upper inner side to freely move the support pipe 10. Spring (S) coupled so that, and is installed on the bottom of the spring (S) and is installed with one end inserted into the inside of the spring (S) can control the radius of rotation of the spring (S) The control unit 50 is coupled to the connection hole 60, the fastening hole 61 is fastened to the bottom of the control unit 50 is formed on the upper surface and the adjustment hole 62 is formed on the upper and lower ends of the outer periphery, and the slide hole in the center. A 71 is formed and a long hole 73 in which a bolt pipe of the adjustment screw 74 is inserted is formed at one side of the outer circumference thereof, and thus the vertical rod can be moved vertically with the connecting rod 60 inserted into the slide hole 71. And the control tube 70 for controlling the movement of the back plate 20 by the adjustment fixing of the adjustment screw 74, and the bottom of the connecting rod 60 is inserted and fixed in the state in which the control tube 70 is inverted The ball 81 and the fixing hole 82 is formed on one side and the fixing piece 80 is fixed by the bolt tube of the fixing handle 101 with one end inserted into the backrest support 100 installed in the seat bottom Angle adjustment device of the chair back characterized in that the configuration. According to claim 1, the control unit 50 is formed in the receiving groove 51 which connects to the center of the upper surface opened therein, the ball-type coupling portion 53 connected to the angle control rod 52 at one end is received and the bottom The angle adjustment device of the chair back, characterized in that the bolt pipe 54 for fastening and fastening to the fastening hole 61 of the connecting rod 60 is configured in the center. The method according to claim 1, wherein the control tube 70 is formed to extend the outer periphery of the upper surface of the slide hole 71 to the extension portion 72 is configured to enable the control of the flow width of the back plate 20 Adjusting angle of chair back.