KR200270446Y1 - Controlling system of back panel for chair - Google Patents

Abstract

The present invention is to adjust the backrest provided on the stool to the user's body shape in the forward and rearward direction so that the user can maintain a stable posture to contribute to the improvement of the comfort and increase the quality and stability of the stool. Regarding, the backrest adjusting device (50) is provided with a guide plate (51) fixed to the lower side of the auxiliary frame (32) provided inside the upper frame (33) for fixing the seat plate (31);

The outer side of the guide plate 51 is treated with a round 52 so as to increase the adhesion to the auxiliary frame 32, the inner side is connected to the bottom of the seat plate 31 to guide the backrest frame 37. A bent portion 53 capable of being formed;

A horizontal portion 54 between the round 52 and the bent portion 53 includes a guide hole 55 extending in the longitudinal direction;

The guide hole 55 is inserted with a bolt 56 fixed to the backrest frame 37 so that the backrest 36 can move forward and backward;

The bolt 56 is characterized in that the movement is limited by the fixing means 57 is coupled to the bottom of the guide plate 51.

Description

Chair backrest control device {Controlling system of back panel for chair}

The present invention relates to a backrest adjusting device of a stool, and more particularly, to easily adjust the backrest of a stool used with a desk in a school or an academy according to a user's physical condition.

In general, desks and stools used by students in a school or academy are divided into a desk and a stool and a desk and a stool are separated.

In the case of the integrated type and the detachable type, the desk is composed of a frame fixing a top plate on which books and notes can be placed.

In the case of the stool 1, as shown in FIG. 1;

It consists of an upper frame 4 having a seat plate 2 and a backrest 3 and a lower frame 6 having a pedestal 5 at a lower end thereof, so that height and height can be adjusted.

The conventional stool as described above is not only the height of the seat plate is adjusted, but the angle of the backrest is not adjusted, which is quite inconvenient to use, because the height of the seat plate is considered to be considered only the size of the height.

For example, if a short student sits on a stool and sticks his back to the back, the foot is in contact with the back of the seat when the knee joint is locked to the tip of the seat. If the foot is in close contact with the floor, the back does not stick to the back. There are several problems, such as maintaining an unsafe posture at all times.

Therefore, the present invention is designed to solve the above problems, by adjusting the backrest provided on the stool in the forward and rearward directions according to the user's body shape, so that the user maintains a stable posture and contributes to the improvement of convenience and the stool's quality and stability. The purpose is to increase.

1 is a front configuration diagram showing a stool to which the prior art is applied.

Figure 2 is a side view showing a stool applied to the backrest adjustment technology of the present invention.

Figure 3 is an exploded perspective view showing the main portion of the backrest of the stool adjustment device applied technology of the present invention.

4 is a cross-sectional view taken along line A-A of the backrest adjustment device of the stool applied to FIG.

Figure 5 is a perspective view showing an extract of the portion B of the backrest control device applied to Figure 3;

Figure 6 is a cross-sectional view taken a portion C of the backrest adjustment device shown in Figure 3;

* Description of the symbols used in the main parts of the drawings *

30; Stool

33; Upper frame

36; back of a chair

50; Backrest Control

51; Guide Plate

55; Information Hall

56; volt

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

Figure 2 is a side view showing a stool applied to the backrest adjustment technology of the present invention, Figure 3 is an exploded perspective view showing the main portion of the backrest adjustment device applied to the technology of the present invention, Figure 4 is a stool applied to FIG. 5 is a cross-sectional view taken along line A-A of the backrest control device of Figure 5 is a perspective view of the B portion of the backrest control device of the stool applied to Figure 3, Figure 6 is a perspective view of the backrest control device of Figure 3 A cross-sectional view showing an excerpt from the C portion will be described together.

In general, the stool 30 used in schools and academies is fixed to the seat plate 31 and the upper frame 33 having an auxiliary frame 32 for preventing flow and the lower frame 35 having a pedestal 34 at the bottom. Consists of, the upper frame 33 is coupled to the back frame frame 37 fixed to the backrest 36.

The upper and lower connecting pipes 38 and 39 are protruded and coupled to the lower and upper portions of the upper and lower frames 33 and 35, and are coupled to the coupling points of the upper and lower connecting pipes 38 and 39. It is provided with a height adjusting means (40).

In the present invention, the backrest 36 of the stool 30 is characterized in that it further comprises a backrest control device 50 that can be adjusted by moving in the front, rear direction to fit the body shape.

The backrest adjustment device 50;

The lower back frame 37 is provided with a guide plate 51 fixed to the lower side of the auxiliary frame 32 provided inside the upper frame 33 to fix the seat plate 31 to the front of the guide plate 51. Adjust to move backwards.

The guide plate 51 is treated with a round 52 so as to enhance adhesion with the auxiliary frame 32 in the outer direction, and in contact with the bottom of the seat plate 31 in the inner direction to connect the backrest frame 37. The bent portion 53 is bent upwardly to guide.

In the horizontal portion 54 between the round 52 and the bent portion 53, the guide hole 55 is formed long in the longitudinal direction, so that the bolt 56 is pressed or welded to the back frame 37 and inserted freely. Make it move.

Of course, it will be obvious that the bolt 56 is limited by the fixing means 57 such as a butterfly nut coupled to the bottom of the guide plate 51 or a handle inserted into the nut.

Looking at the operation of the backrest control device 50 is applied to the stool 30 as described above are as follows.

If the backrest 36 does not fit itself while sitting on the stool 30, the backrest 36 is moved forward and backward to adjust it to its own body shape and then to maintain the adjusted state for comfort and stability. Keep your posture.

This operation, by sitting on the seat plate 31 of the stool 30 can determine whether the backrest 36 is suitable for them, and at this time, it is possible to determine in which direction the backrest 36 should move in the front or rear. do.

In this state, the upper frame 32 provided on the bottom surface of the seat plate 31 and the lower surface of the guide plate 51 fixed to the auxiliary frame 32 coupled to the bolt 56 fixed to the backrest frame 37 Loosen the fixing means 57 to allow the backrest frame 37 to move freely in the front and rear directions of the guide plate 51.

Adjustment is completed by moving the backrest frame 37 fixing the backrest 36 forward or rearward as described above to adjust to fit the body shape and then tightening the fixing means 57 so that the backrest frame 37 does not move.

Of course, the back frame 37 can be moved only as long as the length of the guide hole 55 formed in the horizontal portion 54 of the guide plate 51.

The present invention as described above is able to maintain a more stable posture by adjusting the backrest 36 to move forward and backward to fit the user's body shape using the stool (30).

The present invention as described above is to adjust the backrest provided on the stool to the user's body shape in the forward and rearward direction, so that users can maintain a stable posture to contribute to the improvement of convenience and increase the quality and stability of the stool, etc. You can get it.

Claims (1)

An upper frame 33 having an auxiliary frame 32 for fixing the seat plate 31 and preventing flow, and a lower frame 35 having a pedestal 34 at the bottom thereof; The upper frame 33, the backrest control device 50 that can be adjusted by moving the backrest 36 of the stool 30, the backrest frame 37 fixed with the backrest 36, to the body shape in front and rear directions. In further comprising; The backrest adjusting device (50) is provided with a guide plate (51) fixed and welded below the auxiliary frame (32) provided inside the upper frame (33) for fixing the seat plate (31); The outer side of the guide plate 51 is treated with a round 52 so as to increase the adhesion to the auxiliary frame 32, the inner side is connected to the bottom of the seat plate 31 to guide the backrest frame 37. A bent portion 53 capable of being formed; A horizontal portion 54 between the round 52 and the bent portion 53 includes a guide hole 55 extending in the longitudinal direction; The guide hole 55 is inserted with a bolt 56 fixed to the backrest frame 37 so that the backrest 36 can move forward and backward; The bolt 56 is a backrest control device, characterized in that the movement is limited by the fixing means 57 is coupled to the bottom of the guide plate (51).