KR101722317B1

KR101722317B1 - Chair of Move Back

Info

Publication number: KR101722317B1
Application number: KR1020150082225A
Authority: KR
Inventors: 박영호
Original assignee: 박영호
Priority date: 2015-06-10
Filing date: 2015-06-10
Publication date: 2017-03-31
Also published as: KR20160145460A

Abstract

A chair backrest including a guide shaft 10 fixed to the seat back and back direction with respect to the seat back and a mover moving in the back and forth direction of the seat in association with the guide shaft are formed on the chair seat or the chair frame.
The left and right lower ends of the backrest structure 2 for supporting the back plate 1 of the backrest are coupled to the mover.
The mover also includes a stopper coupled to move in the lateral direction of the chair. The guide shaft 10 is formed with a sawtooth shape, and the stopper is formed with a sawtooth shape coupled with a sawtooth formed on the guide shaft. When the stopper coupled to the mover is moved to the left and right of the chair, Wherein the guide shaft and the teeth formed on the stopper are engaged or disengaged to thereby control the back and forth movement of the backrest.

Description

{Chair of Move Back}

The present invention relates to a chair in which a backrest is shifted forward and backward so that a worker sitting on a chair can tilt his or her posture forward or backward, or move back and forth around a chair seat and sit comfortably.

Figure 1 shows the first prior art that is configured to allow the backrest to move. The drawing shows Japanese utility model application publication no. 45-20210 (filed date 1966.7.23). This way, when the back is up and down, but when you are backing up, you have to lean against your back to get your butt off the seat. It can not sit because it is off the seat. I can not write at all.

Thereafter, a method of making the U-shaped bottom of the back of the back, such as KR 20-0448295, was filed as an improved method. However, this method can not be practically used because it becomes a strange form with protrusions at the rear of the chair.

A method of installing a guide rail on both sides of the seat so as not to protrude rearward has been proposed as in JPA_1999113674 and has become mainstream.

On the other hand, in a method of fixing the movement of the backrest, various methods for pinning and fixing the pins have been filed. JPA_1999113674 suggests a method in which the backrest does not protrude rearward. However, this also mentions that the backrest can be fixed by pin-fitting without any specific configuration. The patent is a function of locking the backrest received.

A configuration in which the pins are fixed in the same manner as that shown in KR 20-0448295 in Korea afterwards is a fixed method.

That is, in the history of the invention in which the backrest moves back and forth, the backrest is configured to protrude rearward, and the backrest moves to both sides of the seat.

At this time, the method of fixing the moving back is a method of fixing the pin by fixing the pin, which is a reliable method in that it can secure the certainty of fixation. However, inserting a pin into a discontinuously spaced hole requires adjustment, and a clicking sound is inevitable when connecting and disconnecting. In addition, the positions where the pins are inserted are provided on the left and right sides, respectively, or on both sides.

If the fixing pin is configured only on either the left or right side, there is a phenomenon that the unfixed side is pushed when the backrest is tilted. However, it is very annoying to install it on both sides and operate each.

In order to remedy these inconveniences, I have made a series of inventions such as 10-1103154 and 10-1092785, 10-1243018 and so on. This is basically a fixed method using friction. It is thought that by adjusting the roughness of the surface, sufficient fixing force can be obtained even with a small force. A cam or screw was used as a means of actuating the clamping force, and a contact pad was interposed to adjust the contact surface to reduce wear. However, in the case of assuming to move and fix frequently in the process of prototyping, wear and tear of abutment and screw used as connection and disconnection mechanism to get friction and abrasion of contact surface were serious.

Thus, the present invention provides an invention which is easy to fix and does not have a problem such as abrasion.

When studying or studying in front of a desk, the worker approaches the upper part of the workbench, and the back of the chair falls off the back of the worker. Therefore, the worker who is not supported by the backrest becomes unstable and fatigued over time. Although attempts have been made to cope with this condition as mentioned above, there is no practicality due to incomplete use and inconvenience in use or not in practical use. Overcoming these shortcomings, I have invented a series of inventions.

However, it was considered that there was difficulty in ensuring sufficient durability due to the worn parts used in the preceding invention of the prototype during the manufacturing process. Therefore, it is desirable to invent a method that can escape the problem of abrasion inherently while maintaining convenience and certain certainty.

A chair backrest which is movable in the front and rear direction of the chair, including a guide shaft 10 fixed to the seat back and fixed to the seat in a chair seat plate or a chair frame and a mover moving in the front- In the chair,

The left and right lower ends of the backrest structure 2 for supporting the back plate 1 of the backrest are coupled to the mover.

The guide shaft 10 is formed with a saw tooth shape, and the mover includes a stopper 3 coupled to move in the left-right direction of the chair. The stopper is formed with a saw tooth shape to be engaged with a saw tooth formed on the guide shaft. When the stopper 3 coupled to the mover is moved in the left and right direction of the chair, the guide shaft and the teeth formed on the stopper are engaged So that the forward and backward movement of the backrest can be interrupted.

The guide shaft 10 is formed on both left and right sides of the chair seat plate or the chair frame which is a fixed portion and the stopper 3 is integrally formed so as to operate simultaneously on both the left and right guide shafts. The stopper 3 moves in the left and right direction of the chair even when the stopper 3 is engaged with the guide shaft 10 in the left and right direction of the chair and applies force to the left and right sides of the chair. So that the back and forth movement of the backrest can be controlled by engaging or disengaging the guide shaft 10 at the same time.

The stopper 3 constitutes the guide shaft 10 in the middle of the chair seat plate or the chair frame and the stopper 3 is moved in the left and right direction of the chair even when the stopper 3 is engaged with the guide shaft 10 in the left- And the stopper is engaged with or detached from the guide shaft 10 by the movement, so that the movement of the backrest in the forward and backward directions can be interrupted.

The fixation of the backrest movement is achieved by engagement with a saw tooth formed on the stopper 3 coupled to the mover 6 so as to move in the left and right direction of the chair in a saw tooth shape formed on the guide shaft 10 as a fixed portion. The releasing of these engagements is accomplished by pushing the handle 8 of the stopper 3 in the left and right direction of the chair and releasing the tooth shape engagement.

As a result, the backrest coupled to the mover 6, which is engaged with the guide shaft 10 and can move in the front-rear direction of the chair along the guide shaft 10, can move freely forward and backward along the guide shaft 10 do.

These operations can fundamentally solve the wear-out problem in the prior art of the present invention because there is no part to be rubbed. Therefore, the problem of durability due to abrasion is solved.

In addition, compared with my prior art, the components to be operated can be minimized, so that the configuration is simple, and therefore, it is economically advantageous.

Figure 1: An example of an early invention for a reclining movement
Fig. 2: Another example of a backrest moving invention
3: perspective view of a stopper for fixing the backrest movement
Fig. 4 is a perspective view of the stopper excluding the guide cover
Fig. 5: Magnified view of the portion where the tooth shape of the guide shaft and the stopper are combined
Figure 6 is a perspective view of the intermediate guide shaft and the stopper.

The present invention will now be described in detail with reference to the accompanying drawings.

3 and 4 show the structure of a movable backrest.

Fig. 3 shows a state in which the stopper 3 is engaged with a saw tooth formed on the guide shaft 10. Fig.

4 is a view showing the stopper guide lid 20 which is a component for guiding and fixing the stopper in order to see how the stopper 3 is engaged with the guide shaft 10. [

FIG. 5 is an enlarged view of the saw tooth shape of the stopper 3 coupled to the saw tooth shape of the guide shaft 10 for more clear view.

6 shows an example in which the guide shaft 10 is constituted by one and the auxiliary guide shaft 101 is constituted for stability. Here, the front support 14 does not appear to show the configuration.

The backboard (1) of the chair is coupled to a backrest structure (2) supporting the backboard (1).

The guide shaft 10 is fixed to the seat 15 or the chair frame, which is a fixed part of the chair, in the front-back direction of the chair. The guide shaft 10 is coupled with a mover 6 which is coupled with the guide shaft 10 and is movable in the front and rear direction of the chair.

The lower end of the backrest structure 2 is engaged with and supported by the mover 6.

A saw-tooth shape is formed in the lower portion of the guide shaft 10.

A stopper (3) capable of moving in the left and right direction of the chair is coupled to the mover (6).

The stopper (3) is formed with a saw tooth shape to be engaged with a saw tooth shape formed on the guide shaft (10).

The position of the sawtooth shape formed on the guide shaft 10 can be formed at any portion of the guide shaft. However, the problem of wear and cosmetic appearance are shown in the above-mentioned drawings 3, 4 and so on.

The shape of the guide shaft 10 is a circular axis in the drawings of FIGS. 3 to 5, but may be a square, a pentagon, a hexagon, or the like; 6, it is also possible that a part of the mover is made into a parser guide groove and the guide shaft 10 is fitted to the guide shaft 10 by matching the shape of the guide shaft 10. In this way, May be combined.

In the drawings of FIGS. 3 to 6, the guide shaft 10 is constructed below the seat, which is one of the fixed objects, but it may be a fixed object even if it is not a seat. For example, it can be fixed to the chair frame below the seat.

6, only one guide shaft 10 may be provided in the middle of the seat plate, instead of constituting the guide shaft 10 on the left and right sides of the seat plate. In this case, Alternatively, the auxiliary guide shaft 101 may be further constructed to ensure stability. 6, the auxiliary guide shaft 101 is formed around the guide shaft 10. In this case, the mover 6, which is engaged with the guide shaft 10, It is preferable to form one long side to the left and right.

3 to 6, when the chair user leans against the back and applies a force directed backward to the backrest, the backrest is not pushed backward by the stopper 3 coupled to the fixed guide shaft 10.

The shape of the teeth formed on the guide shaft 10 and the stopper 3 to be engaged with each other may be a square shape, a shape that can be combined with a point of view such as a pentagon or a round shape, and the term "saw tooth shape" .

3 to 6, the stopper 3 is pushed to the right of the drawing by pressing the part of the handle 8 on the left side of the stopper. This results in a state in which the tooth shape of the guide shaft 10 and the tooth shape of the stopper 3 are engaged. Therefore, in this state, the backrest can be adjusted to the front and back of the chair to be positioned at a desired position.

In use, the user can simultaneously hold the mover 6 or the backrest structure 2 by projecting the protruding portion of the mover downward while pressing the stopper 3. In this state, the backrest is moved to the front and rear of the chair You can place it anywhere you want.

Then, when the force pressing the handle 8 of the stopper 3 is released, the stopper is restored to its original position by the restoring spring 31 configured to resist the variation of the stopper. This causes the saw tooth shape of the guide shaft 10 and the tooth shape of the stopper 3 to be biased, and the motion of the back is fixed.

3, 4, and 6, the restoring spring 31 may be formed on both sides. Thus, the stopper can be returned to its original position by pressing either the left or right side.

Alternatively, one spring may be applied to tension and compression.

Such a restoring spring may be an elastic rubber or an elastic plate as an example of an elastic material that performs a restoring action, and the name of the restoring spring of the present invention includes them.

3 and 4, the shape of the stopper 3 is elongated in the left and right direction of the chair so as to be simultaneously engaged with the guide shafts 10 formed on the right and left sides, but either or both of them may be formed separately. Figures 3 and 4 illustrate examples that are deemed desirable.

The shape of the stopper 3 may be the same as that shown in Figs. 3 to 5, or may be configured as shown in Fig. 6 to achieve the function and implement a proper shape.

The above-described chair according to the present invention can be variously modified and embodied within the scope of the claims, the detailed description of the invention and the attached drawings, and is within the scope of the present invention.

The structure of the present invention is less neat because the shape of the outer teeth is visible compared with the prior art of the present invention, and when a force is applied before the teeth are completely engaged, Can be. However, the structure of the present invention is simple in construction compared with the prior art of the present invention, and is free from the problem of durability that was worried about in the prior art since there is no part to be worn by being combined with each other.

Although the advantages and disadvantages of the respective products can be obtained, the present invention is added to the present invention because the worry of durability is reduced in the actual merchandising process, easiness of production and economical efficiency arise, and it is thought that it is more advantageous for actual product launch.

1: back plate 2: backrest structure 3: stopper
1: handle 31: restoring spring 6: mover
10: guide shaft 14: support base 15:
18: Bracket 20: Stopper guide cover 101: Auxiliary guide shaft

Claims

A chair backrest which is movable in the front and rear direction of the chair, including a guide shaft 10 fixed to the seat back and fixed to the seat in a chair seat plate or a chair frame and a mover moving in the front- In the chair,

The left and right lower ends of the backrest structure 2 for supporting the back plate 1 of the backrest are coupled to the mover, and the guide shaft 10 is formed with a saw tooth shape. (3); The stopper is formed with a saw tooth shape to be engaged with a saw tooth formed on the guide shaft. When the stopper coupled to the mover is moved in the left and right direction of the chair, the guide shaft 10 and the teeth formed on the stopper are engaged Wherein the backrest is capable of interrupting the back and forth movement of the backrest by falling.

The stopper (3) according to claim 1, wherein the stopper (3) is coupled to a guide shaft (10) formed on both left and right sides of a chair seat plate or a chair frame, Wherein the backrest is capable of interrupting movement of the backrest in the forward and backward directions by simultaneously engaging or disengaging the guide shaft (10) formed on both the left and right sides by the movement.

The stopper (3) according to claim 1, wherein the stopper (3) is coupled to a guide shaft (10) formed in the middle of a chair seat plate or a chair frame so as to move in a left and right direction of a chair Wherein the backrest is coupled to the guide shaft (10) by movement thereof, or can be separated from the guide shaft (10), thereby controlling the back and forth movement of the backrest.