KR100960608B1 - Slim-type lumbar protecting chiar - Google Patents

Abstract

PURPOSE: A slim-type lumbar protecting chair is provided, which improves use feeling remarkably and enhances spatial utilization and marketability. CONSTITUTION: A slim-type lumbar protecting chair comprises: a seat plate in which a backing plate(20) is hinge-coupled so that slope can be changeable; a support stand(30) which is integrally formed in the seat plate and in which a hinge hole is formed; a fixture(33) for an extension spring, which is formed in the bottom of the hinge hole; a hinge piece which is integrally formed on the backing plate and in which the hinge hole is formed to be hinge-coupled with the support stand; and a lower fixture(23) for an extension spring, which is formed in the bottom of a hinge piece.

Description

Slim type lumbar protection chair {SLIM-TYPE LUMBAR PROTECTING CHIAR}

The present invention adopts a tension spring as an elastic member of the tilting means, the user can smoothly back the back plate tilt variable tilting back and the desired inclination is maintained stable to significantly improve the feeling of use, and minimize the protrusion of the back of the back space The present invention relates to a slim lumbar protection chair that enhances usability and improves the merchandise by implementing a slim design.

The chair is required to be able to stably support the entire body from the cervical spine, which is upper back to the lower lumbar spine, even in a posture change such as the user tilting his back.

However, the general chair is fixed to the support connected to the lower plate of the lower back plate, when the user leans back, the back plate does not support the waist portion, the waist is floating in the air, and sitting in the chair for a long time back pain, etc. There was a problem causing.

As an alternative to this problem, a chair that allows the back plate to support the lower back even when the user leans back is disclosed in Publication No. 20-2009-0002112 (hereinafter referred to as "prior art").

As shown in FIG. 10, the chair 100 according to the related art is fixed to a structure positioned below the seat plate 120, and a support 130 supporting the back plate 110 is tilted through the tilting means 150. Is configured to be coupled to the back plate 110, the tilting means 150 is the first bracket 155 is fixed to the back plate 110, the second bracket 156 fixed to the support 130, the first A torsion shaft 151 connecting the first bracket 155 and the second bracket 156 from the upper portion, and a torsion fitted to the hinge shaft 151 and interposed between the first bracket 155 and the second bracket 156. It consists of a spring 153, an adjustment screw 157 for fixing the second bracket 156 to the first bracket 155 and fixed to the first bracket 155, and a cover 158 covering the upper portion of the tilting means 150. .

Looking at the operation state of the configuration as described above, the first bracket 155 fixed to the back plate 110 and the second bracket 156 fixed to the support 130 through the torsion spring 153 is hinged by the user When the back is folded back, the back plate 110 is inclined about the hinge axis 151 and has a merit of closely supporting the waist at all times in conjunction with a change in posture of the user.

However, this conventional technology has various problems by using the torsion spring 153 as described above.

First, since the torsion spring has a slight increase in repulsive force during the pressurization from the initial stage of pressurization, after the user starts to change the inclination of the back plate by applying a force to the back, for example, even after stopping the force to reach the desired inclination of 30 degrees. There is a fatal disadvantage that the tilt rotation of the back plate continues due to weight pressure and the waist is lifted.

When the torsion spring is used as a high strength to prevent such a waist, there is a problem in that it is inconvenient to use because it requires a very large force to be applied to the user's power in the tilt variable starting to tilt the back plate.

Second, the torsion spring can not be fixed to any one side when assembling first, there is a difficulty in the assembly work and reduces productivity.

Third, the torsion spring inevitably requires a variable space for the torsion spring 153 between the first bracket 155 on the back plate 110 and the second bracket 156 on the support 130. The support 130 from the protruding width is large, occupies a large amount of rear space in which the chair is placed, generates a rectangular space, and makes space utilization difficult.

fourth. As described above, since the protrusion toward the rear of the chair is large, it is a limitation in developing a design aiming at slimming.

The present invention has been made to solve the above problems,

It is an object of the present invention to stably support and protect the lumbar spine in the chair life, and by adopting a tension spring as an elastic member of the tilting means, the backrest plate tilt variable starting to back the user is smoothly made and the desired inclination is stably maintained. It provides a slim lumbar protection chair that significantly improves the usability, is easy to assemble, and implements slimming, thereby increasing space utilization, and improving the productability with a slim design.

Slim lumbar protection chair according to the present invention to achieve the above object

A seat plate and a back plate, a support fixed to the seat plate and supporting the back plate, the back plate is configured to include a tilting means for changing the inclination according to the change of the posture of the user, the tilting means is hinged to fix the back plate and the support In the chair provided with an elastic member for resilient support and tilt return of the hinge shaft and the back plate,

The tilting means has a tension spring as an elastic member,

The tension spring is characterized in that the upper end is fixed to the upper stator positioned adjacent to the top of the support and the lower end is fixed to the stator provided below the back plate.

In one embodiment according to the invention,

The upper stator is formed integrally on the support in the form of hooks,

The stator is in the form of a bracket is characterized in that it is coupled to the back plate.

In one embodiment according to the invention,

The stator is made of a flat plate attached to the inner back plate and the hook hole is formed in the upper portion, the lower portion is formed by bending the engaging portion fitted to the lower back plate,

The back plate is characterized in that the through-hole is formed for passage through the tension spring is connected to the stator.

In one embodiment according to the invention,

The support is in the form of a "c" -shaped channel is provided with a hinge portion is installed on both sides of the top of the hinge hole and the hinge shaft type,

The back support plate is characterized in that the hinge hole or the hinge hole and the bracket is formed integrally corresponding to the hinge portion of the support is formed.

In one embodiment according to the invention,

A chair in which the back plate is hinged to the seat plate so that the inclination is variable,

The seat plate is formed of a support plate formed with a hinge hole for the back plate and the hinge coupling to the rear is formed integrally and an upper stator for the tension spring is formed below the hinge hole,

The back plate is made of a hinge piece is formed integrally with a hinge hole in order to hinge coupled to the support, and is formed by a cross-stator for the tension spring is formed below the hinge piece,

The upper stator is supported on the upper stator of the support, characterized in that the tension spring is installed to the lower end is supported on the stator of the back plate.

The slim lumbar protection chair according to the present invention having the above structure distributes the load burden concentrated on the lumbar spine in the sitting position of the chair to the back and protects the waist so that the lumbar spine is not overwhelmed even in a long chair life and the tilting means. By adopting tension spring as elastic member

First, the backrest plate tilt variable that allows the user to lean back is made smoothly with little force, and the desired tilt is kept stable, which significantly improves the feeling of use,

Secondly, it is easy to assemble to improve assembly productivity,

third. Significantly improves space utilization by realizing slimming by minimizing the separation distance between back plate and support

Fourth, there is a remarkable effect of improving the commerciality by implementing a slim design.

Hereinafter, with reference to the accompanying drawings an embodiment of the slim lumbar protection chair of the present invention will be described in more detail.

1 is an exploded perspective view showing the configuration of an embodiment according to the present invention, Figure 2 is a perspective view of the combination of Figure 1, Figure 3 is a longitudinal cross-sectional view of Figure 2, Figure 4 is a variable state diagram of FIG.

As shown in Figures 1 to 4, the slim lumbar protection chair 1 of the embodiment according to the present invention is fixed to the seat plate 10 and the back plate 20, the seat plate 10 and the back plate 20 Support support 30, the back plate 20 is configured to include a tilting means 50 to change the inclination in accordance with the change in the posture of the user, the tilting means 50 is the back plate 20 and In a chair having a hinge shaft 51 for hinge fixing the support 30 and an elastic member for resilient support and tilt return of the back plate, the tilting means 50 is a tension spring 53 as an elastic member. The tension spring 53 is fixed to the upper stator 33, the upper end 531 is provided adjacent to the upper end of the support 30, and the lower end 532 is provided on the back plate 20 below the stator ( 23) is fixed.

That is, the tension spring 53 is installed obliquely between the support 30 and the back plate 20.

Here, the upper stator 33 is integrally formed on the support 30 in the form of a hook, the stator 23 is preferably in the form of a bracket is coupled to the back plate 20.

The upper stator 33 may be formed by cutting a portion of the support 30.

In addition, the stator 23 is in the form of a flat plate attached to the back plate 20, the hook hole 231 is formed through the upper portion and the locking portion 232 to be fitted to the bottom of the back plate 20 Is formed, the back plate 20 is preferably formed through the through hole 25 for the passage of the tension spring 53 is connected to the stator (23).

As described above, when the stator 23 is attached to the inside of the backrest plate 20 and the through hole 25 is formed in the backrest plate, the backrest cushion 21 is essentially installed (see FIGS. 1 to 5).

As shown in FIG. 1 and FIG. 6 according to the present invention, the support 30 is in the form of a "c" channel and has a hinge hole 311 and a hinge shaft type stator on both sides of the upper end ( A hinge portion 31 is installed, and the back plate 20 has a hinge hole 221 or a hinge hole 221 and the stator 23 corresponding to the hinge portion 31 of the support. It is preferred that the bracket 22 formed integrally with each other.

As such, the bracket 22 having the hinge hole 221 for installing the hinge shaft 51 and the stator 23 for fixing the lower end 532 of the tension spring may be provided on the back plate 20. In this case, assembly is easy.

The present invention may be provided with a seat plate cushion 11, a leg portion 60 below the seat plate 10 and a wanderable footrest 70 as in a chair that is commonly used in common (see FIG. 5).

In addition, it is preferable that the rear cover 80 for covering the support 30 is formed to surround the back plate 20 at a height that does not interfere with the inclination of the back plate 20 (see FIG. 5).

The invention also applies to legless chairs without legs.

As shown in FIG. 7, the slim lumbar protection chair 1A according to the embodiment of the present invention applied to a legless chair is preferably formed with the support 30 integrally behind the seat plate 10.

In addition, the hinge 30 and the upper stator 33 are integrally formed on the support 30 formed on the seat plate 10, and the stator 23 is integrally formed at the rear of the back plate 20. Can be formed.

As shown in Figs. 8 and 9, the slim lumbar protection chair 1B of the embodiment according to the present invention is a chair in which the back plate 20 is hinged with the seat plate 10 so that the inclination can be varied. The seat plate 10 is formed with an integral supporter 30 having a back plate 20 and a hinge hole 311 formed therein for hinge coupling, and an upper stator 33 for a tension spring below the hinge hole 311. Is formed is formed, the back plate 20 is a hinge piece 27 is formed integrally with the hinge hole 221 is formed to be hinged to the support 30, the tension spring (53) below the hinge piece The stator 23 is formed across the horizontal, the upper end is supported on the upper stator (33) of the support and the tension spring 53 is installed on the lower end is supported on the stator (23) of the back plate will be.

Here, the seat plate 10 has a support cover 30 is formed in the rear cover to surround the back of the back plate 20, the hinge cover 37 is formed to protrude from the support of the rear cover form, the hinge piece 37 The stator 33 is preferably installed across the horizontal.

Preferably, the hinge pieces 27 and 37 extend downward to serve as reinforcement portions of the back plate and the support.

The seat plate 10 and the back plate 20 are preferably injection molded with a resin material, and the upper stator 33 and the stator 23 are preferably made of metal in consideration of strength.

This slim lumbar protection chair 1B is preferably used as a legless chair having a simple structure, also called a duck chair.

In addition, a leg of simple structure can be combined with such a seating chair.

In the figure, reference numeral '34' is a support connector, and '35' is a reinforcing embossing part.

Looking at the operation state of the slim lumbar protection chair (1) according to the present invention having the above configuration.

The present invention is when the back plate 20 and the support 30 is hinged and the tension spring 53 is installed obliquely over the upper portion of the support 30 and the lower back plate 20 when the user flips back back Tilting in which the back plate is tilted about the hinge axis 51 is made resilient and stably supports the entire area such as the lower part of the waist of the user (see FIG. 4).

Therefore, the load burden concentrated on the lumbar spine in the sitting position of the chair is distributed to the entire back, so that the lumbar spine is prevented even when the chair life is prolonged and the waist is prevented from bending.

The tension spring 53 has the same function as the conventional torsion spring in that the back plate 20 is inclined elastically and the back plate 20 is returned to its original position.

However, since the tension spring 53 gradually increases the strength of the repulsive force during the pressurization process, the tilt variable starting is made smoothly with a small force, and when the pressurization stops at the desired inclination, for example, a 30 degree inclination, The tilt of the backrest of the viewpoint is stable and supports the waist comfortably.

In other words, the tension spring 53 has a stronger rebound force as the pressure tension proceeds from the initial time when the repulsive force is applied, and the tilt variable starting that the user starts to lean back is made smoothly, and when the pressure stops at the desired inclination, the slope of the back plate is Since it is stable and supports the lumbar spine, unlike the prior art using a torsion spring, it is possible to prevent waist lifting and significantly improve the feeling of use.

In addition, by adopting a tension spring, assembly is easy and assembly productivity is improved.

In addition, the tension spring is installed obliquely between the back plate 20 and the support 30 to minimize the separation interval between the back plate 20 and the support 30, in addition, the upper stator 33 is a support It is formed by cutting a part of the 30, the stator 23 is formed into the back plate 20, the back plate 20, when the through hole 25 for the tension spring through the back plate 20, the back plate 20 ) And narrowing the separation interval of the support 30 to implement a slimmer and significantly improve the space utilization.

In addition, in the chair design is an important factor that determines the consumer's choice, as the protrusion of the support is minimized as described above, so that a slim design can be realized and the productability is significantly increased.

On the other hand, as shown in FIG. 7, the slim lumbar protective chair 1A in which the support 30 is integrally formed on the seat plate 10, and the slim lumbar protective chair 1B shown in FIGS. 8 and 9 are configured. Extremely simple and injection molded with resin material, it is possible to provide a legless chair that supports the waist stably at an affordable price.

In addition, the slim lumbar protection chair (1B) shown in Figures 7 and 8 has a beautiful appearance in appearance by the support 30 is formed in a form that surrounds the back plate serving as a rear cover.

In addition, by combining the leg of a simple structure with such a legless chair, it can be used in various ways, such as a chair for school classrooms, preschool children or outdoor chairs.

The present invention is not limited to the above-described embodiments and drawings since various substitutions, modifications, and changes are possible to those skilled in the art without departing from the technical spirit of the present invention. .

1 is an exploded perspective view showing the configuration of an embodiment according to the present invention

2 is a perspective view of the combination of FIG.

3 is a longitudinal cross-sectional view of FIG.

4 is a variable state diagram of FIG.

Figure 5 is a cross-sectional view showing the configuration of an embodiment according to the present invention

Figure 6 is an exploded perspective view showing the configuration of an embodiment according to the present invention

Figure 7 is a cross-sectional view showing the configuration of an embodiment according to the present invention

8 is an exploded perspective view showing the configuration of an embodiment according to the present invention

9 is a longitudinal cross-sectional view of the coupled state of FIG.

10 is a block diagram of a prior art

* Explanation of symbols for the main parts of the drawings

1,1A, 1B: Slim lumbar protection chair of the present invention

10: seat plate 11: seat cushion 20: back plate

21: back cushion 22: bracket 221: hinge hole

23: tentator 231: hook hole 232: hook

25: through hole 30: support 31: hinge portion

311: hinge hole 33: stator 34: support connector

35: embossed portion 50: tilting means 51: hinge axis

53: tension spring 60: leg 70: footrest

80: rear cover 100: prior art

Claims (6)

delete delete delete delete In the chair that the back plate 20 is hinged to the seat plate 10 so that the inclination is variable, The seat plate 10 is formed of an integral supporter 30 having a back plate 20 and a hinge hole 311 for hinge coupling to the rear plate, and an upper stator 33 for a tension spring under the hinge hole 311. ) Is formed, The back plate 20 is a hinge piece 27 is formed integrally with a hinge hole 221 is formed to be hinged to the support 30, the stator for the tension spring (53) below the hinge piece ( 23) is formed across the horizontal, Slim support lumbar protection chair characterized in that the upper end is supported on the upper stator (33) of the support and the tension spring 53 is supported on the lower end of the stator (23) of the back plate. The method according to claim 5, The seat plate 10 is in the form of a rear cover to support the support plate 30 to the lower side of the back plate 20, the hinge cover 37 is formed protruding from the support of the rear cover form, the hinge piece 37 Slim type lumbar protection chair characterized in that the sperm 33 is installed across.

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