KR200421931Y1 - Chair of which back is supported elastically - Google Patents

Abstract

The present invention relates to a chair on which the back plate is elastically supported, and more particularly, to a chair having a seat plate and a back plate and a frame of rods supporting them, the back plate being rotatable at a predetermined angle about the frame and being elastically supported. It is about a chair which can become and give a comfortable feeling.

The chair that is supported by the backrest of the present invention is a chair having a back plate and a back plate supporting the lower body and the back of the user, and a seat frame supporting the back plate and the back plate, respectively, wherein the back support part of the frame penetrates. A torsion coil spring inserted and supported at one end of the back of the back, a stopper fixed to the back support of the frame and supporting the other end of the torsion coil spring, and a back from the back of the back so that the back is rotatable about the frame. It characterized in that it comprises a fixing plate fixed.

Chair, back, spring, resilience, resilience, frame.

Description

Chair with elastic back support {CHAIR OF WHICH BACK IS SUPPORTED ELASTICALLY}

1 is an exploded perspective view of a chair that is supported by the back elastic according to the present invention,

2 is a perspective view of the combination of FIG.

3 is a cross-sectional view taken along the line A-A of FIG.

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

100 frame 110 seat plate support

120: backing support 200: backing

210: protrusion 300: stopper

400: coupling plate 500: torsion coil spring

600: seat

The present invention relates to a chair on which the back plate is elastically supported, and more particularly, to a chair having a seat plate and a back plate and a frame of rods supporting them, the back plate being rotatable at a predetermined angle about the frame and being elastically supported. It is about a chair which can become and give a comfortable feeling.

There are many types of chairs depending on the use, but when the ease of movement, loading and storage is required, so-called stacking chairs are widely used. Stacking chairs are stackable chairs, which are premised on storing and moving, so they are often small and lightweight, and the manufacturing cost is low. The stacking chair usually has a simple structure in which a frame having a circular cross section is a frame and the back plate and the seat plate support the frame.

On the other hand, when a comfortable feeling is required, a reclining chair is used. The reclining chair is a chair designed so that the angle of the seat and the back can be arbitrarily changed to take the best rest position according to the user's body shape or the situation, and complicated mechanical mechanism is applied and manufacturing cost is expensive.

However, since the stacking chair according to the related art has a simple structure, the seat plate and the back plate are fixed, and thus cannot be deformed according to the user's body shape, and there is a problem of being tired easily for a long time use. In addition, the reclining chair according to the prior art can give a comfortable and comfortable feeling, but it is not suitable for use in a place where mass movement is frequent, such as in a convention hall, because the structure is complicated and the weight and cost are high.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a chair to feel comfortable using the elastic support while having a simple structure.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

The chair that is supported by the backrest of the present invention is a chair having a back plate and a back plate supporting the lower body and the back of the user, and a seat frame supporting the back plate and the back plate, respectively, wherein the back support part of the frame penetrates. A torsion coil spring inserted and supported at one end of the back of the back, a stopper fixed to the back support of the frame and supporting the other end of the torsion coil spring, and a back from the back of the back so that the back is rotatable about the frame. It characterized in that it comprises a fixing plate fixed. The chair is elastically supported backrest according to the present invention is because the backrest is elastically supported by the restoring force of the torsion coil spring can give a comfortable feeling and the structure is also simple.

In addition, the chair according to the present invention, the back plate is elastically supported, the frame is a part of the back support portion is cut by a predetermined length, the stopper is a rod shape longer than the length of the cut portion of the back support portion of the frame, the cut portion of the back support portion of the frame transversely Both ends are fixed to the frame, respectively. By providing the cutout in the frame, the process of installing the torsion coil spring is facilitated.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the chair is elastically supported according to the present invention.

1 is an exploded perspective view of the chair is elastically supported back according to the present invention, Figure 2 is a combined perspective view of FIG.

The seat plate 600 and the back plate 200 are for supporting the lower body and the back of the user, respectively, and have a curved plate shape made of synthetic resin.

The frame 100 is a skeleton that forms the shape of the entire chair, and includes a seat plate support 110 and a back plate support 120 that support the seat plate 600 and the back plate 200, respectively. In addition, the frame 100 is made of a rod having a circular cross section.

The back plate 200 is supported in contact with the back plate support 120 of the frame 100. Since the frame 100 is a rod having a circular cross section, a protrusion 210 having a semicircular groove is formed on the rear surface thereof so that the frame 100 may be partially accommodated.

Torsional coil spring (Helical Torsion Spring) (500) is installed on the back support 120 of the frame (100). That is, the back support 120 of the frame 100 is inserted into the hollow of the torsion coil spring 500. In addition, one end of the torsion coil spring 500 is supported by the back surface of the back plate 200. In consideration of symmetry and balance, the pair of torsion coil springs 500 is preferably arranged left and right.

On the other hand, since it is not easy to assemble the back plate 200 and the coupling plate 400 to be described below with the frame 100 inserted in the torsion coil spring 500, the frame 100 of the back support portion 120 It is preferable that a part is cut. Therefore, the torsion coil spring 500 can be fitted to the frame from the cut portion, thereby facilitating the manufacturing process.

The stopper 300 is also fixed to the back support 120 of the frame 100. The stopper 300 has a rod shape, and is coupled to the frame 100 by welding or a separate screw. The stopper 300 serves to regulate the angle of rotation of the backplate 200 in contact with the back surface of the backplate 200 when the backplate 200 rotates with respect to the frame 100. In addition, the stopper 300 supports the other end of the torsion coil spring 500. When the frame 100 is partially cut from the back support 120, the stopper 300 is disposed so that both ends thereof extend to both sides of the cut portion of the frame 100, and both ends thereof are fixed to the frame 100.

The coupling plate 400 is coupled to the backplate 200 on the opposite side from the backplate 200 with respect to the frame 100. As in the case of the back plate 200, the coupling plate 400 is also preferably formed with a semi-circular groove to accommodate a portion of the frame 100. As the coupling plate 400 is coupled to the back plate 200, the back plate 200 is rotatable about the frame 100. In addition, it is preferable that the coupling plate 400 accommodates both the torsion coil spring 500 and the stopper 300 in the inner space thereof, thereby making the appearance beautiful.

Hereinafter, with reference to Figure 3 describes the operation of a preferred embodiment of the chair is elastically supported according to the present invention.

3 is a cross-sectional view taken from the line A-A of FIG. 2, and shows before and after the back plate 200 rotates, respectively. The left side of the figure is before the back plate 200 rotates, and the right side of the figure shows after the back plate 200 rotates. First, before the back plate 200 rotates, one end of the torsion coil spring 500 is in contact with the back surface of the back plate 200, and the other end of the torsion coil spring 500 is fixed to the frame 100. Since the back plate 200 is supported by the rotational force in the counterclockwise direction with reference to the drawings. However, since the back surface of the back plate 200 is in contact with the stopper 300, the stopped state is maintained.

In this state, when a suitable external force is applied, such as the user is seated, the back plate 200 rotates in a clockwise direction based on the frame 100 as a center axis. When the back plate 200 rotates, the torsion coil spring 500 is deformed to generate a restoring force. Therefore, when the external force applied to the back plate 200 is removed, the back plate 200 is rotated in the counterclockwise direction based on the drawing to return to the state before the rotation. In this process, the user receives proper elasticity from the back plate 200, so that the back plate 200 feels a much more comfortable use than that fixed to the frame 100.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

As described above, the chair is elastically supported backrest according to the present invention, the backrest is elastically supported by using the restoring force of the torsion coil spring, the user can feel a comfortable feeling. Therefore, fatigue is reduced even when used for a long time, and has a simple structure is easy to manufacture and low cost.

Claims (2)

A chair having a seat plate and a back plate for supporting the lower body and the back of a user, and a frame made of a rod and supporting the seat plate and the back plate, respectively, A torsion coil spring having a back support inserted through the frame and having one end supported on the back of the back plate; A stopper fixed to the back support of the frame and supporting the other end of the torsion coil spring; And the back plate includes a coupling plate fixed to the back plate on the back side of the back plate so as to be rotatable about the frame. The method of claim 1, The frame has a part of the back support is cut by a predetermined length, The stopper has a rod shape longer than the length of the cutout of the back support of the frame, and both ends are fixed to the frame across the cutout of the back support of the frame.

Images