KR101723604B1 - Apparatus for adjusting height of chair - Google Patents

Abstract

The present invention relates to a chair height adjusting apparatus which is easy to assemble by a simple structure and can raise manufacturing efficiency accordingly, and relates to a chair height adjusting apparatus comprising a seat plate base, a gas cylinder installed below the seat plate and moving the seat plate up and down, A gas cylinder operating part installed on the seat on the upper side; A user lever provided in an outer region of the seat, and a cable coupled at both ends to the gas cylinder and the user lever, wherein the gas cylinder operating portion includes a body having a through hole formed therein, A stopper, a coupling hole formed to face the lower surface of the body in contact with the through hole in a direction orthogonal to the direction of the through hole, an operation lever having a tapered lower surface inserted into the through hole, A first insertion hole formed at an end of the operation lever and adapted to be inserted into the cable, and a second insertion hole formed at an upper portion of the body on the other side opposite to a side surface of the through hole in which the stopper is formed. And a second insertion hole formed in the second insertion hole and in which the cable is inserted, and a second insertion hole formed in the first insertion hole and the second insertion hole, It may include a spring provided in the table.

Description

Apparatus for adjusting height of chair

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair, and more particularly, to a chair height adjusting apparatus capable of arbitrarily adjusting a height of a chair according to a user's desire.

Generally, the height adjustment device of the chair is used to adjust the height of the chair seat, and a gas cylinder is used. A gas chamber is formed on both sides of a piston provided in a gas cylinder, and gas movement is performed between both gas chambers according to the operation of the opening / closing pin of the gas cylinder. The direction of the gas movement is determined by the pressure due to the gas movement between the both gas chambers and the pressure applied to the seat plate so that the height of the chair seat plate is adjusted by moving the piston up and down.

In order to control the operation of the opening / closing pin in the chair height adjusting apparatus using the gas cylinder, a height adjusting lever was used. However, when the height adjusting lever is used, the position of the handle of the height adjusting lever is distant from the action radius of the user's hand in the sitting posture, and it is inconvenient to change the posture to adjust the height of the seat.

In order to solve the inconvenience of the height adjusting lever, a device such as an adjusting block capable of operating the opening / closing pin on the cylinder side is provided, a button or an operating lever is provided at a position where the user can reach, A device such as a block and an operation lever (or button) are connected by a cable. In such an apparatus, when the operation lever (or button) is operated in a sitting position by the user, the control block for operating the opening / closing pin is operated by the force of the cable, and accordingly, the opening / closing pin is operated, .

However, such an apparatus using a cable has a problem that a control block for operating the opening / closing pin must be installed in combination with the opening / closing pin.

KR 10-2000-0007287 A KR 20-0315980 Y1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a chair height adjusting device which is easy to assemble by a simple structure and can thereby increase manufacturing efficiency.

The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a chair height adjusting apparatus comprising: a seat plate base; a gas cylinder installed below the seat plate base to vertically move the seat plate; a gas cylinder operating unit installed on the seat plate at an upper portion of the gas cylinder; A user lever provided in an outer region of the seat, and a cable coupled at both ends to the gas cylinder and the user lever, wherein the gas cylinder operating portion includes a body having a through hole formed therein, A stopper, a coupling hole formed to face the lower surface of the body in contact with the through hole in a direction orthogonal to the direction of the through hole, an operation lever having a tapered lower surface inserted into the through hole, A first insertion hole formed at an end of the operation lever and adapted to be inserted into the cable, and a second insertion hole formed at an upper portion of the body on the other side opposite to a side surface of the through hole in which the stopper is formed. And a second insertion hole formed in the second insertion hole and in which the cable is inserted, and a second insertion hole formed in the first insertion hole and the second insertion hole, It may include a spring provided in the table.

The stopper may be formed such that the height of the through-hole is lower than the height of the top surface of the side on which the height of the top surface is opposite.

The first interpolation hole is formed such that the diameter of the first interpolation hole to a certain depth is larger than the diameter of the remaining region, the end cap coupled to the end of the cable wire is inserted in a region extending to a certain depth in the outer region, So that the wire can be inserted.

The second interpolation hole may be formed such that the diameter of the second interpolation hole to a certain depth is larger than the diameter of the remaining area, and the cable housing is interpolated to a predetermined depth in the outer area and the cable wire is inserted into the remaining area.

The angle of the tapered lower surface of the operation lever may be set such that the lower surface is not moved into the through hole region of the body at a position where the operation lever is fixed by the stopper so as not to protrude to the lower portion of the body.

The details of other embodiments are included in the detailed description and drawings.

The chair height adjusting device according to various embodiments of the technical idea of the present invention is easy to assemble by a simple structure and thus can increase manufacturing efficiency.

The height adjustment device according to various embodiments of the technical idea of the present invention can reduce the manufacturing cost of the chair by a simple configuration.

Various other effects of the present invention will be mentioned in the text.

1 is a side view schematically showing a chair according to an embodiment of the technical idea of the present invention,
FIG. 2 is a cross-sectional view schematically showing an embodiment of the gas cylinder in FIG. 1,
FIG. 3 is a plan view schematically showing an embodiment of the seat plate base in FIG. 1,
Fig. 5 is a perspective view schematically showing an embodiment of the gas cylinder operating portion in Fig. 3,
Fig. 6 is an exploded perspective view schematically showing an embodiment of the gas cylinder operating portion in Fig. 3,
Fig. 7 is a side view schematically showing one embodiment of the operating lever in Fig. 5 or Fig. 6; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Like reference numerals designate the same or functionally similar elements throughout the specification. Accordingly, although the same reference numerals or similar reference numerals are not mentioned or described in the drawings, they may be described with reference to other drawings. Further, even if the reference numerals are not shown, they can be described with reference to other drawings.

1 is a side view schematically showing a chair according to one embodiment of the technical idea of the present invention.

Referring to FIG. 1, a chair has a seat 110 for allowing a user to sit on an upper portion of a seat 100, and a back panel 200 for supporting a back of the seat 100 on a rear side of the seat 100. An armrest 300 for supporting a user's arm is provided on both sides of the seat plate base 100 and a gas cylinder 400 for moving the seat plate 100 up and down is installed below the seat plate base 100 . A leg 500 for supporting a chair on the ground is installed at a lower portion of the gas cylinder 400.

Fig. 2 is a cross-sectional view schematically showing an embodiment of the gas cylinder in Fig. 1; Fig.

2, the gas cylinder 400 is provided with a spindle guide 411 in a cylindrical outer cylinder 410, and a spindle 420 for sliding movement along the inner circumferential surface of the spindle guide 411 is installed. A gas chamber 430 is formed in the spindle 420. A piston 440 is provided in the gas chamber 430 to perform a piston movement in response to the pressure of the gut and a gas chamber 430 Is divided into a gas chamber 431 and a gas chamber 432. [ The piston 440 is coupled to the piston rod 441 passing through the gas chamber 432 and one end of the piston rod 441 is engaged with the outer cylinder 410 by the fixing portion 442. An opening / closing pin 421 is provided at one side of the gas chamber 431 so as to discharge or shut off the gas. A push button 422 for operating the opening / closing pin 421 is installed at the protruding end of the opening / closing pin 421 . The opening / closing pin 421 and the push button 422 can be integrally formed. At this time, the opening / closing operation can be performed by the force applied to the upper end of the opening / closing pin 421. A gas moving pipe 450 is installed on the outer wall of the gas chamber 430 and the gas moving pipe 450 can move the gas between the gas chamber 431 and the gas chamber 432 according to the operation of the opening and closing pin 4210 .

FIG. 3 is a perspective view schematically showing one embodiment of the seat plate base in FIG. 1, and FIG. 4 is a side view schematically showing an embodiment of the seat plate base in FIG.

Referring to FIGS. 3 and 4, the seat plate base 100 is formed in a downwardly curved shape toward the center area, and the gas cylinder 400 shown in FIG. 2 is coupled through the center area downwardly satisfied.

A gas cylinder operating portion 610 is provided in a base plate region of the seat plate to which the gas cylinder 400 is coupled. The gas cylinder manipulating part 610 may be installed close to the upper end of the push button 422 or the opening / closing pin 421 of the gas cylinder 400. The push button 422 or the opening and closing pin 421 is operated according to the operation of the gas cylinder manipulating part 610 and the gas cylinder 431 is moved in accordance with the gas movement between the gas chamber 431 and the gas chamber 432 in the gas cylinder 400 The height of the chair is adjusted.

A user lever 660 may be installed on the outer lower region of the seat plate base 100 and the user lever 660 may be installed at a position where the user can easily move his or her hands in a sitting position on the seat plate 110. [ The user lever 660 can be hinged to the seat plate base 100 and can be installed so that the other end rotates according to the user's operation.

The gas cylinder manipulation unit 610 and the user lever 660 can be coupled to both ends of the cable 650, respectively. The cable 650 is moved according to the movement distance of the other end of the user lever 660 by the operation of the user and the gas cylinder operating portion 610 is operated by the movement of the cable 650. Movement of the cable 650 is such that only the cable wire inside the cable housing is moved by the cable housing.

Fig. 5 is a perspective view schematically showing one embodiment of the gas cylinder operating portion in Fig. 3, Fig. 6 is an exploded perspective view schematically showing an embodiment of the gas cylinder operating portion in Fig. 3, 5 is a side view schematically showing one embodiment of the operating lever in Fig. 5 or Fig. 6; Fig.

5 to 7, the gas cylinder manipulating part 610 has a body 611 formed with a through hole h passing through the upper and lower surfaces thereof. A stopper 621 may be formed on one side of the through hole h and the stopper 621 may be formed such that the height of the upper surface of one side of the through hole h is lower than the height of the upper surface of the opposite surface . The coupling holes 613 may be formed in the lower surface of the body 611 in contact with the through holes h in a direction perpendicular to the direction of the through holes h. The direction in which the respective coupling holes 613 are located and the side in which the stopper 612 is formed and the direction in which the opposing surfaces are formed are perpendicular to each other. An insertion hole h1 through which the cable 650 is inserted may be formed in an upper region of the body 611 of the surface opposite to the one side where the stopper 621 is formed, May be larger than the diameter of the remaining region. A cable housing 652 is inserted in a region extending from the outer region to a certain depth and a cable wire 651 in the cable housing 652 is extended and inserted in the remaining region.

An operation lever 621 is provided in the through hole h of the body 611. The operation lever 621 is formed with a coupling rod 622 at a position opposite to the lower region and each coupling rod 622 is coupled to the coupling hole 613 of the body 611. The engaging rod 622 is coupled to the engaging hole 613 so that the operating lever 621 can move horizontally within the through hole h of the body 611. [

An interpolation hole h2 for interpolating the cable 650 may be formed in the upper region of the operation lever 621. The diameter of the interpolation hole h2 in the outer region to a certain depth is formed larger than the diameter of the remaining region . The end cap 653 is inserted in the region from the outer region to a certain depth, and the cable wire 651 can be inserted into the remaining region. The end cap 653 may be engaged with the end of the cable wire 651.

A spring 631 may be provided on the cable wire 651 between the body 611 and the operation lever 621. The spring 631 horizontally moves the upper region of the operation lever 621 by an elastic force so as to be away from the area where the cable 650 of the body 611 is inserted.

The upper region of the operation lever 621 horizontally moved by the elastic force 631 of the spring 631 can be fixed in position by the stopper 612 of the body 611. [

The lower surface of the operation lever 621 may be formed to be tapered. The lower surface of the operation lever 621 may be formed to be tapered from below the region where the coupling rod 622 is formed and the angle of the tapered lower surface is set such that the operation lever 621 is fixed by the stopper 612 of the body 611 So that the lower region of the operation lever 621 is moved into the region of the through hole h of the body 611 so as not to protrude outside the lower surface of the body.

In this state, when the user pulls the user lever 660, the cable wire 631 located in the cable housing 652 moves, and the end cap 653 coupled to the end of the cable wire 651 moves The operating lever 621 of the interpolated gas cylinder operating portion 610 is moved horizontally while overcoming the elastic force of the spring 631. The tilted lower surface of the operation lever 621 moves to the outside of the lower surface of the body 611 in accordance with the horizontal movement of the operation lever 621, The upper push button 422 or the opening / closing pin 421 is pressed. The opening and closing pin 421 is operated by the compression of the lower surface of the operation lever 621 to perform the gas movement between the gas chamber 431 and the gas chamber 432 through the gas moving pipe 450. The user can move the piston 440 by a difference between the gas pressure difference between the gas chamber 431 and the gas chamber 432 and the pressing force of the seat 110 to adjust the seat 110 to a desired height .

When the height of the seat plate 110 is adjusted and the user releases the user lever 660, the operation lever 621 horizontally moves to the position of the stopper 612 by the elastic force of the spring 631 of the gas cylinder operating portion 610 So that the cable wire 651 in the cable housing 652 is also moved. The user lever 660 is returned to the original position in accordance with the movement of the cable wire 651. The user lever 660 may also be inserted with a spring for positional restoring. The lower surface of the operation lever 621 is moved to the upper side of the gas cylinder 400 by the movement of the operation lever 621. As a result, The pressing with the push button 422 or the opening and closing pin 421 is canceled. The opening and closing pin 421 is operated in response to the disengagement of the piston 440 from the lower surface of the operation lever 621 to block gas movement between the gas chamber 431 and the gas chamber 432 through the gas moving pipe 450, So that the height of the seat 110 adjusted by the user is maintained.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative and not restrictive in every respect.

100: base plate, 110: seat plate,
200: back plate, 300: armrest,
400: gas cylinder, 410: outer tube,
411: spindle guide, 420: spindle,
421: opening / closing pin, 422: push button,
430, 431, 432: gas chamber, 440: piston,
441: Piston rod, 442: Fixing part,
450: gas moving pipe, 500: leg,
610: gas cylinder operating part, 611: body,
612: Stopper, 613: Coupling hole,
621: Operation lever, 622: Coupling rod,
631: spring, 650: cable,
651: Cable wire, 652: Cable housing,
653: end cap, 660: user lever,
h: Through hole, h1, h2: Interpolation hole

Claims (5)

A seat plate base; A gas cylinder installed at a lower portion of the seat plate base to move the seat plate up and down; A gas cylinder operating part installed on the seat on the upper part of the gas cylinder; A user lever provided in an outer region of the seat; And a cable coupled at both ends to the gas cylinder operating portion and the user lever; / RTI >
The cable,
Cable wire; A cable housing surrounding a portion of the cable wire; And an end cap coupled to one end of the cable wire,
The gas cylinder operating portion includes:
A body having a through hole formed therein; A stopper formed on the body at one side of the through-hole; A coupling hole formed on a lower surface of the body in contact with the through hole so as to face in a direction perpendicular to the direction of the through hole; An operating lever having a tapered lower surface that is inserted into the through hole; A coupling rod formed to face the lower region of the operation lever and coupled to the coupling hole; Wherein the end cap is inserted in a region extending from the outer region to a certain depth and the cable wire is inserted into the remaining region so as to be inserted into the remaining region, A first interpolating hole for allowing the first insertion hole to be formed; And an upper region in a body of the other side opposite to the one side of the through hole in which the stopper is formed, wherein a diameter to a certain depth in an outer region is formed larger than a diameter of the remaining region, A second insertion hole through which the cable housing is inserted and the cable wire is inserted into the remaining area; And a spring that surrounds the cable wire and is installed to support between the first insertion hole and the second insertion hole. The chair height adjusting apparatus according to claim 1, wherein the stopper is formed such that the through hole is lower than a height of a top surface of a surface of the one side surface opposed to the height of the top surface. delete delete The apparatus as claimed in claim 1, wherein the angle of the tapered lower surface of the operating lever is set so that the lower surface is moved into the through hole region of the body at a position where the operating lever is fixed by the stopper, Chair height adjustment.

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