KR200191797Y1 - Chair to control position of the back of chair - Google Patents

Abstract

This design moves only the back of the chair up, down, front and back independently of the back. The present invention relates to a chair capable of adjusting the position of the backrest, which can be fixed or restored to the original position, and a preferred specific means for carrying out the present invention includes a long hole formed in the longitudinal direction of the back of the back plate and along the long hole. The position adjustment unit is coupled to the position adjustment unit which is slidably coupled up, down, front and back, and the backrest which is integrally slidable when the position adjustment unit is slid along the long hole by being coupled to the position adjustment unit. Both sides have fixing holes for fixing the backrest with screws, and a guide bar is integrally formed at the center so as to be slidable back and forth, and an insertion protrusion with a plurality of separation preventing protrusions on each side of the outer circumference in a ball shape is integrally formed thereon. Formed fasteners, and fastening holes are formed in the center of the upper surface Coupled with a coupler formed integrally with a coupling pipe with a plurality of long grooves on each side of the edge, the spring interposed between the fixture and the coupler, and coupled to the fastening hole, one side of the spiral rod and the close contact portion is sequentially The control knob formed by the combination of the structure.

By constructing as described above, the present invention provides the position adjustment part fixed to the backrest so that the insertion protrusion of the fastener can be inserted into the joint so that the backrest can be flexed and at the same time, the insertion protrusion is prevented from being released from the state of the fitting. The protrusions are slidable by guide bars along the long grooves formed on the inner circumferential surface of the coupling tube, thereby separating the backrest from the back plate. It can be slid backward and the backrest can be returned to its original position by the elasticity of the spring, and it can be moved up and down to fit the body shape according to the adjustment of the adjustment knob formed on the position adjusting part along the long hole formed in the back plate. Not only does it satisfy the various types of seated occupants, but it also maximizes the comfort by not burdening the waist even if there is no auxiliary cushion or cushion, and it is easy to assemble and install with a simple structure to improve the function of the conventional chair. Can be.

Description

Chair to control position of the back of chair}

This design moves only the back of the chair up, down, front and back independently of the back. The present invention relates to a chair capable of adjusting the position of the backrest to be fixed or restored to original use.

Conventional chairs are largely divided into employees, executives, including students for students, and the former consists of a small base plate, back plate, armrests, etc., solely for practical use. The lower body of the seated person is generally accommodated under the desk and the upper body of the seated person is incomplete to the back, but in the latter case of the executive board, the purpose of raising the authority consciousness of the seated person and the purpose of pursuing comfort such as an armchair Due to the pursuit of practicality, it consists of a large base plate, back plate, and armrests, so the chair itself cannot be accommodated under the desk, so when the seated person puts his arms on the desk and reads, writes, etc. Only part of it is placed on the base plate, and the upper body is in the air without any dependence on the back plate. Due to the cushion gamyeo standing for auxiliary heal properly shaped in accordance with the position it has been customary to force the screen used for the auxiliary backrest.

Another example is the driver's seat, the bus chair and the barber's chair, where the entire backrest only moves backwards to the desired angle. There was a fixation or return, but this is mainly to provide the seated person a rest, such as sleep.

In the conventional chair as described above, the chair is produced uniformly regardless of the body of the seated person, so that in the case of an executive chair, that is, the seated person's back when a person sees work or writes at a desk, etc. Not only do they feel tired easily due to the lack of close contact with the back of the chair, but if such chairs are used for a long time, their backs may bend or other body changes may occur. Seeing is commonplace, and it is the same with feeling fatigue and discomfort.

Looking at the technical gist of the application patent application No. 92-13909 No. 92-13909, namely the chair that can adjust the position of the backrest, to solve the problems with the conventional chair, 'a set of ratchets that drive the ratchet by the movement of the handle. A driving means, a spring, a spring fixing plate for fixing the spring, and a rod having a ratchet on one side and a connecting shaft on the other side, and a rod having a rod operating plate at a predetermined position to drive the rod by elasticity of the spring. A set of links consisting of a main link, a sublink, a moving link, and a fixed link having a set of link driving means, two fixed hinge points and two movable hinge points, and a long hole connected to the connecting shaft of the rod. It is provided with means for varying the backrest to the front position of the backplate.

Looking at the technical gist of another patent application No. 92-13910, the seat of the back adjustable chair, 'a ratchet driving means for driving the ratchet by the movement of the handle, and one side has a ratchet On the other side, the backrest has an extension part fixedly installed, and has a set of backrest moving means consisting of a rod having a rod operating plate at a predetermined position and a spring for driving the rod so that the backrest can be changed to the front position of the backplate. It's done.

On the other hand, the pre-utilized utility model does not need to support the conventional auxiliary cushion or cushion, but simply the backrest is slid back and forth in the back plate to satisfy all the various body types of the seated person. That is, there are many problems in satisfying the various types of seats of the upper body or the lower body, and so on, and thus, the backrest can slide all the way back and forth from the back plate to satisfy the deformation of the seated body or the fatigue of the seated person. There is no problem.

The present invention is to solve the above problems with the prior art or the prior application as a solution means "long hole formed in the longitudinal direction in the back close contact of the back plate, along the long hole. The position adjuster is slidably coupled to the rear, and the backrest is coupled to the position adjuster so as to be integrally slidable when the position adjuster slides along the long hole. Fixing hole for fixing with a screw, the guide bar is integrally formed in the center so as to be slidable back and forth, and the fastener formed integrally with the insertion protrusions with a plurality of escape prevention protrusions on each side of the outer periphery in the shape of a ball on the upper part, Fastening hole is formed on the inside, and the bottom inner circumference is provided with a plurality of long grooves on each side The coupling is formed integrally with the tube, the spring interposed between the fixing and the coupling and the coupling, and the fastening hole is fastened to one side, the spiral rod and the close contact is formed in the structure of the control knob is formed integrally integrated ' .

By constructing as described above, the present invention has a position adjustment part fixed to the backrest, so that the insertion protrusion of the fastener is fitted to the coupling member so that the backrest can be moved flexibly, and at the same time, the insertion protrusion is prevented from being removed from the fixing tool in the state of being fitted to the coupling tool. The backrest is separated from the back plate by allowing the guide bar to slide along the long groove formed on the inner circumferential surface of the coupling pipe. It can be slid backward and the backrest can be returned to its original position by the elasticity of the spring, and it can be moved up and down to fit the body shape according to the adjustment of the adjustment knob formed on the position adjusting part along the long hole formed in the back plate. Not only does it satisfy the various types of seated occupants, but it also maximizes the comfort by not burdening the waist even if there is no auxiliary cushion or cushion, and the simple structure makes it easy to assemble and install, thereby improving the function of the conventional chair. Has its purpose.

1 is an exploded perspective view of the present invention,

Figure 2 is an exploded perspective view of the position adjusting unit which is the main part of the present invention,

Figure 3 is a cross-sectional view showing a combined operating state of the present invention.

Explanation of symbols on the main parts of the drawings

1: back plate 2: position adjusting part

3: backrest 11: waist close contact

12: long hole 20: fixture

21: coupler 22: spring

23: adjusting knob 200: fixing hole

201: guide bar 202: separation prevention protrusion

203: insertion protrusion 210: fastening hole

211: long groove 212: coupling pipe

230: spiral bar 231: close contact

Hereinafter, described in detail with respect to the configuration of the present invention for achieving the above object.

Figure 1 shows an exploded perspective view of the subject innovation, Figure 2 is an exploded perspective view of the position control portion of the main part of the subject innovation, Figure 3 shows a cross-sectional view showing a combined operating state of the subject innovation, respectively.

Reference 1 indicates climbing. A long hole 12 is formed in a longitudinal direction at a predetermined position of the lumbar contact portion 11 of the back plate.

Reference numeral 2 designates a position control unit which is slidably fastened up, down, front and back along the long hole 12.

Reference numeral 3 designates a backrest coupled to the position adjusting unit 2 so as to be slidable up, down, front and back along the long hole 12.

As described above, the long hole 12 formed on the back plate and the position adjusting part 2 and the backrest 3 are coupled to each other, so that the position adjusting part 2 and the backrest 3 are integrally formed along the long hole 12. It is moved and fixed before and after.

On the other hand, the position adjusting portion 2 is composed of a fastener 20, the coupling member 21, the spring 22, and the adjustment knob 23 as large,

Looking at the structure of the fixture 20, the fixing hole 200 for fixing the backrest (3) with screws on both sides, the guide bar 201 is formed integrally so as to be slidable back and forth in the center and the ball shape on the top As such, the insertion protrusion 203 is formed integrally with a plurality of departure preventing projections 202 protruding on each side of the outer circumference.

Next, the coupling hole 21 is a fastening hole 210 is formed in the center of the upper surface and the coupling pipe 212 is provided with a plurality of long grooves 211 on each side of the inner periphery of the bottom integrally formed structure.

Next, the spring 22 is inserted into the long groove 211 of the coupler 21 to the separation preventing projection 202 of the insertion protrusion 203, the coupling of the fixture 20 and the coupler 21 As interposed and coupled therebetween, the upper body of the seated person is spaced apart from the back 3 and at the same time, the back 3 can be returned to its original state.

Next, the adjustment handle 23 is formed on one side is a spiral rod 230 is formed to be fastened to the fastening hole 210 and the close contact portion 231 is formed so that the adjustment handle 23 is in close contact with the back plate in sequence The contact portion 231 is separated from the back plate 1 by the adjustment of the adjustment knob 23, and then the adjustment knob 23 is adjusted up and down along the long hole 11 by adjusting the entire position adjusting part 2 and the backrest 3. If fixed by the control of the) is in close contact with the back portion 231 is fixed to the back surface (1).

Hereinafter, the operation of the present invention in detail.

The present invention, as shown in Figures 1 and 3 using the fastener 20 and the backrest by using a screw in the fixing hole 200 formed on both sides of the fastener 20 on the back of the back plate 1 does not touch the seated body After fixing (3) the coupling pipe formed integrally to the bottom of the coupling hole 21, the insertion protrusion 203 formed with a plurality of escape preventing projections 202 formed on each side of the outer circumference in a ball shape on the top of the fixture 20 (212) After inserting the insertion protrusion 203 so that the plurality of long grooves 211 and the separation prevention projections 202 on each side of the inner circumferential surface spring between the fixture 20 and the coupling sphere 21 ( By interposing 22) the upper body of the seated person is spaced apart from the backrest (3) and at the same time the backrest (3) can be returned to its original state again, and the backrest (3), the fastener (20) and the coupler (21) joined in this way ) In front of the chair back (1), that is, the chair back (1 The spiral rod 230 formed at one side of the adjustment knob 23 at the fastening hole 210 formed at the center of the upper surface of the back of the back plate 1 at the center of the upper surface of the back plate 1. When fastening and fixing, the contact part 231 formed integrally with the spiral rod 230 is closely attached to the back plate 1 so that the backrest 3 itself is fixed, and when the seated person wants to change the position, the adjusting knob 23 After loosening the position and moving the position, the adjustment knob 23 is fixed again, so that the tight contact part 231 is fixed to the back plate 1.

Therefore, the present invention is not close to the upper body of the body by the rigid structure of the flexible back (3) and also by the adjustment of the adjustment knob 23 formed in the position adjusting unit 2 according to the body structure of the seat 3 By allowing it to slide freely up and down along the long hole 12 perforated on the back plate 1, the position of the backrest can be moved according to the various body structure of the seated person. It can prevent the deformation of the body structure.

The present invention not only can reduce the deformation or fatigue of the seater's body structure by allowing the backrest to move up and down along the long hole formed in the back plate to fit the various body structures of the seater, and also the insertion protrusion of the fastener fixed to the backrest is It is inserted into the coupler so that it can be moved up, down, left and right flexibly, while the insertion protrusion is inserted into the coupler, the release prevention protrusion of the fixture can be slidable by the guide bar along the long groove formed in the inner circumferential surface of the coupler. This allows the backrest to slide back and forth, and also allows the backrest to return to its original position automatically by the elasticity of the spring to maximize the comfort of the chair. .

While the present invention has been shown and described with reference to certain preferred embodiments, the present invention is not limited to the above-described embodiments and within the scope not departing from the spirit of the present invention has a common knowledge in the art Various changes and modifications may be made by the user.

Claims (2)

Long hole 12 formed in the longitudinal direction in the back contact portion 11 of the back plate 1, Position adjustment unit 2 is slidably fastened up, down, front and back along the long hole 12, The position adjustment of the backrest is characterized in that the backrest (3) is coupled to the position adjusting portion (2) to be integrally slidable when the position adjusting portion (2) is slid along the long hole (12). Available chairs The method of claim 1, The position adjusting unit 2 has a fixing hole 200 for fixing the backrest 3 with screws on both sides thereof, and a guide bar 201 is integrally formed so as to be slidable back and forth in the center thereof, and a ball shape is formed thereon. The fastener 20 is formed integrally with the insertion protrusion 203 in which the plurality of departure preventing protrusions 202 protrude from each side of the outer circumference, and a fastening hole 210 is formed at the center of the upper surface and the bottom inner circumferential sides of the four sides. Coupler 21 formed integrally with the coupling pipe 212 is provided with a plurality of long grooves 211, the spring 22 for interposing and coupling between the fixture 20 and the coupler 21, and As fastened to the fastening hole 210, the side of the chair capable of adjusting the position of the backrest, characterized in that the spiral handle 230 and the close contact portion 231 is formed of a control knob 23 is integrally formed integrally.