KR200185924Y1 - Elasticity coupling corporation for a chair back - Google Patents

Abstract

The present invention relates to an elastic fastener that is coupled to the backrest of a chair used for business or student use, the conventional elastic fastener is formed of a hard synthetic resin between the two back and the back support fasteners, between the soft synthetic resin or rubber The elastic part is adhesively formed by adhesive or heat, and the surface of the back binding part is formed in a flat surface. The excessive number of parts causes excessive manufacturing cost of the elastic fastener, and an improvement stress is applied even when no load is applied when bolts are connected to the chair back. When the load or force acts on the back plate, the stress of the back binding part is greater, and the life of the adhesive part is shortened while the adhesive part is easily opened.

The present invention, the injection molding of the back binding portion, the back support binding portion, the elastic portion integral type elastic binding port of rubber or synthetic resin, etc. to be coupled to the back of the chair divided into two or three quarters, including the one-piece, and the elastic part is elliptical in the bottom When the pressure is applied to the back plate by drilling holes, it can be supported smoothly even if it is twisted. Also, the bottom of the back binding part can be smoothly fixed to the back surface of the back plate, which facilitates the manufacture of the elastic fastener and reduces the manufacturing cost of the elastic fastener. And the backrest elastic fasteners for chairs to provide maximum stability and life of the chair back while improving its durability, including elasticity.

Description

ELASTICITY COUPLING CORPORATION FOR A CHAIR BACK}

The present invention relates to an elastic fastener that is coupled to the back of the chair used for work or students.

In particular, the injection molding of the back fastening part, the back support fastening part, and the elastic part integral type elastic fasteners by rubber or synthetic resin, etc., to be combined with the chair backrest divided into two or three parts, which reduces the manufacturing cost of the elastic fasteners, The present invention relates to a chair back elastic fastener for improving the durability of the chair back and improving its durability including elasticity.

In general, most student or office chairs are designed to support the shape of the back.

That is, the user who sits on the chair feels less fatigue even if they sit or study or work as long as possible by covering the surface with fabric or resin or leather embedded with sponge or foam urethane.

However, since the back of the chair is a uniform configuration, there is a problem in that the back is not properly supported according to the long and short state of the tall or small person or the upper body and the development of the body.

As a result, I felt a lot of tiredness when sitting in a chair, and my learning or work efficiency fell short.

Thus, in order to solve the above problems, there is a configuration in which the back plate is bisected in the longitudinal direction, and the back plate and the support are connected and connected using the support and the elastic fastener, but the back plate is divided into two parts and the back and the support as the elastic fastener. Since the left and right two back plates have the advantage of stably supporting both sides of the back, the elastic fasteners themselves have the following problems.

In other words, in the process of supporting the two left and right backs appropriately according to the characteristics of the human body, the elastic fasteners are too focused on supporting the backs by injecting the working pressure appropriately.

1 and 2, the back support portion (102) connected to the bottom of the seat plate and the back plate attachment portion 101 (101 ') that is screwed to the back plate when manufacturing the elastic fastener 100, as shown in FIG. In addition, the separation between the back binding portion 102 and the back support binding portion 102 formed of an elastic material 103 (103 ') formed of a separate material and then elastically binding by integrating it using an adhesive and heat There was a lot of other hassle in manufacturing the sphere (100).

In addition, the elastic fasteners include a plurality of parts including a back binding part 101 (101 ') made of a hard synthetic resin, a back support binding part 102, and an elastic part 103 (103') made of soft synthetic resin or rubber. Was integrated using adhesive or heat,

In the process of use, when there is a torsion or excessive pressure on only one part, the adhesive site tends to follow, and thus has a short life and a disadvantage of poor durability.

In addition, the conventional elastic fasteners have a binding surface of the back fasteners 101 and 101 ′ that are flat, so that they are forced to be tightly fastened to the curved back plate by bolts, and thus to the back of the chair. Since the enhanced stress is applied between the elastic parts 103 and 103 'of the elastic fastener and the back fastening part 101 and 101' of the coupled elastic fastener, the closed end of which stability is inferior even under a load or force is not applied. Followed.

That is, the conventional elastic fasteners are formed of hard synthetic resin between the two back binding portions 101 and 101 'and the back support binding portion 102, and the elastic portions 103 and 103' made of soft synthetic resin or rubber therebetween. ) Is configured as an adhesive or heat, and the back-bonding portions 101 and 101 'are formed in a plane,

Due to the excessive number of parts, the manufacturing cost of the elastic fastener 100 is excessively increased, and an improvement stress is applied even when no load is applied when the bolt is coupled to the chair back, but when the load or the force acts on the back plate, The stress of 101) (101 ') acts even more and the life of the adhesive is shortened while the adhesive part is easily opened.

Therefore, the present invention is to solve the conventional problems as described above, such as rubber or synthetic resin to be coupled to the back of the chair divided into two or three quarters, such as a back plate binding portion, back plate support portion, elastic portion of the elastic portion integrated Injection molding of the elastic part, and the elastic part to make a smooth support even when twisted when the pressure applied to the back plate to the bottom surface, and also to ensure that the bottom surface of the back binding unit smoothly fixed to the back surface of the back plate to manufacture the elastic binder The purpose of the present invention is to reduce the manufacturing cost of the elastic fastener and to improve the durability including the elasticity while providing the stability and the maximum life of the chair back.

1 is a perspective view showing the structure of a conventional elastic fastener.

Figure 2 is a cross-sectional view showing the structure of a conventional elastic fastener.

Figure 3 is a perspective view showing the structure of the backrest elastic fastener for the subject innovation chair.

Figure 4 is a longitudinal sectional view showing the structure of the backrest elastic fastener for the subject innovation chair.

Figure 5 is a bottom view showing the structure of the backrest elastic fastener for the subject innovation chair.

Figure 6 is a cross-sectional view taken along line A-A 'of the present invention.

7 is a cross-sectional view taken along line B-B 'of the present invention.

8 is a state of use of the backrest elastic fastener for the subject innovation chair.

When the present invention for achieving the above object is described with reference to the accompanying drawings 3 to 8 as follows.

3 to 8, in the chair back elastic fastener 100.

Injection molding of the elastic fastener 100a in which the back fastening portion 101a (101a '), the support stand fastening portion 102a, and the elastic portion 103a (103a') are integrally formed with a soft rubber or a soft synthetic resin,

The back binding portion (101a) (101a ') is formed on the curved surface of the back of the chair back 104, the contact surface to be smoothly secured as a bolt, the inclined curved surface 106, the reinforcing force ribs 107 on both side portions To form a stepped hole 108 to be assembled and secured to the chair back 104 naturally and firmly,

The back support binding portion (102a) is formed so as to be a position of about 5 to 10mm higher than the back binding portion (101a) (101a '),

The insert portion is molded in the nut 109 in the inner center portion, and the elastic portion 103a does not cause bending or torsion of the elastic portions 103a and 103a ', which will be described later, when a force or pressure is applied to the back surface. Forming stop stops 110 and 110 ′ to protect 103 a ′,

On both sides of the back support (102a) is provided with a reinforcing force rib 107 'to prevent partial breakage with the back binding portion (101a) (10la'),

Wherein the elastic portion (103a) (103a ') to actively connect the back binding portion 101a (101a') and the back support binding portion 102a, while actively responding to torsion or pressure,

A straight connection is made from the narrow back binding portion 101a (101a ') to the relatively wide back support binding portion 102a,

The upper surface of the portion connected to the back support binding portion (102a) is projected to withstand bending, the bottom surface is a structure in which the elliptical hole 111 is formed to be resistant to torsional stress or bending.

Hereinafter, reference numeral 112, which has not been described, is a back support frame, and the same parts as in the prior art FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will not be repeated.

Referring to the attached Figures 3 to 8 with respect to the operation of the present invention configured as described above are as follows.

First, injection molding an elastic binder 100a in which the back binding portion 101a, 101a ', the support stand binding portion 102a, and the elastic portion 103a, 103a' are integrated with the same material, that is, a soft rubber or a soft synthetic resin. do.

At this time, the back fastening portion 101a, 101a 'and the back support fastening portion 102a form an elliptical hole 111 in the center of the bottom surface of the elastic portion 103a, 103a', thereby forming the elastic fastener ( 100a) is capable of backing support very smoothly and stably even when the torsion is applied, while maximizing its life and reliability.

In addition, the present invention is not only formed on the bottom surface of the back support binding portion (102a) 5-10 mm higher than the back binding portion (101a) (101a '), but also the stop protrusion 110 (on the bottom of the back support binding portion (102a) ( 110 ')

Even if the elastic part 103a (103a ') is bent due to a strong force or pressure acting on the back of the chair, the stopper part 110 (110') does not cause the wheel to be elastically over the appropriate limit, and the stopper part 110 Lifespan extension effect of the elastic fastener 100a by 110O 'can be improved.

And, the elastic fastener (100a) is to form a reinforcing force protrusion 107 (107 ') in a plurality of lines on the side portion, it is to be able to work very stably when the torsion acts on the elastic fastener itself.

As described above, the present invention is injection molded into the elastic fastener of the back fastening part, the back support fastening part, the elastic part integral part with rubber or synthetic resin, etc. so as to be coupled to the chair backrest divided into two or three parts, including the one-piece and the elastic part. The elliptical hole is drilled on the bottom so that it can be smoothly supported even when the pressure is applied to the back, and the bottom of the back is smoothly fixed to the back surface of the back to facilitate the manufacture of the elastic fastener. It reduces the manufacturing cost, improves the elasticity and durability, and provides the stability and maximum life of the chair back.

Claims (1)

In the chair back elastic fastener, Injection molding of the elastic fasteners in which the back fastening part, the supporter fastening part, and the elastic part are made of soft rubber or soft synthetic resin, etc. The back fastening portion is formed in the inclined curved surface to be smoothly secured as a bolt on the back surface of the chair back, and the reinforcing force ribs are formed on both side portions of the back surface, forming a stepped hole to make the chair back and natural and firm To be assembled and fixed, The back support binding portion is formed so that the position of about 5 to 10mm higher than the back binding portion, Insert molding a nut in the inner central part, and a stop protrusion is formed on the bottom to protect the elastic part while causing a bending or torsion effect of the elastic part to be described later when a force or pressure is applied to the back plate. On both sides of the backrest support, install a reinforcing force relief part to prevent partial breakage along with the backrest fastening part, The elastic portion is to respond to the torsion or pressure to actively connect the back binding and the back support binding, A straight connection is made from a narrow backing fastener to a relatively wide backing fastener. The upper surface of the portion connected to the back support binding portion protrudes to withstand bending, the bottom surface of the chair is characterized in that the elliptical hole is formed to be resistant to torsional stress or bending.