KR100459083B1 - chair - Google Patents

Abstract

The present invention relates to a chair, and since the seat 20 and the backrest 30 are directly installed in a pair of supports 10 whose overall shape is "∠", the height is adjustable, the structure is considerably simplified. In addition, since the loads applied to the seat 20 and the backrest 30 are directly transmitted to the support 10, the weight of the seated person is more stably supported, and moreover, the seat 20 and the backrest 30 can be seen without mutual interference. It is effective to adjust the height in various forms.

Description

Chair {chair}

TECHNICAL FIELD The present invention relates to a chair, and more particularly, to a chair in which seats and backrests are individually adjustable in height.

As is well known, chairs are used in various forms according to their purpose, and are generally divided into bench-type chairs that can be seated by several people and personal chairs that can be seated one by one. It is equipped with various functions to feel more comfortable.

Conventionally, a personal chair is generally provided with a seat for supporting the seat of the seat and a backrest for supporting the seat of the seat, and if necessary, a headrest for supporting the seat of the seat or an arm of the seater. There are also armrests that can be put on.

On the other hand, since the body size of the seat occupant using the chair is different from each other, the means for adjusting the height of the seat and the means for adjusting the height of the backrest are variously reinforced so that the chair can be deformed according to the body size of the seat. .

Moreover, the means which adjusts the inclination angle of a backrest is also provided reinforcement so that a seated person may sit down or lie down in a correct posture.

However, the conventional chair has a structure in which the seat is mounted on the ground so that the seat is adjustable in height in the vertical direction, and the backrest is installed in such a way that the seat is adjustable in height in the vertical direction or the inclined direction at a predetermined angle. Since the external force applied to the backrest is transmitted indirectly through the seat when leaning on the backrest of the seat, the weight of the seated person is not securely supported and a moment is applied to each connection part, thereby causing a problem of component damage.

In addition, the conventional chair has a structure that is very cumbersome and complicated structure of the connection between each component, causing a problem that increases the cost of the product.

Accordingly, the present invention has been invented to solve the above problems, it is possible to easily adjust the height of the seat and the back according to the body size of the seat, and to provide a chair of a simple structure that can safely support the weight of the seat There is a purpose.

1 is a perspective view of a chair according to the present invention,

Figure 2 is a perspective view showing a seat height adjustment mechanism constituting the chair according to the present invention,

3 is an enlarged left side view of the main part of FIG. 2;

4 is a plan view of FIG.

5 is an enlarged front sectional view of the main portion of FIG. 2;

6 is a partial perspective view showing the backrest and the headrest portion;

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a cross-sectional view taken along the line B-B of FIG.

9 is a view for explaining the backrest rotation angle adjustment mechanism, an enlarged view of the main portion viewed from the vertical direction of the support guide portion by partially cutting the housing of the backrest height adjustment mechanism;

10 is a right side view showing the main portion of the chair according to the present invention;

11 is an enlarged view illustrating main parts of FIG. 10;

12 is a plan view showing a rear wheel portion in which the brake mechanism is installed;

13A is a cross-sectional view taken along the line C-C of FIG. 12,

FIG. 13B is a view for explaining an operating state of the brake mechanism, and corresponds to FIG. 13A;

14 is a partial cutaway perspective view showing a knob rotation control mechanism.

-Explanation of terms for the main parts of the accompanying drawings-

10; Support, 11; Support,

11a; Wheel connecting member, 11b; Push pin,

12; Guide portion 12a; Hanging Hole,

13; Connecting member, 14; Front Wheel,

15; Rear wheel, 20; Sheet,

30; Backrest, 31; Shoulder Seat,

31a; Hanging jaw, 32; Headrest connecting rod,

40; Headrest, 41; Shoulder,

41a; Jamming, 42; Resting,

43; Connecting groove, 50; elbow rest,

60; Knob, 100; Seat height adjustment mechanism,

110; Moving block, 120; Hanging Pin,

130; Spring, 140; lever,

141; Locking pin pushing portion, 142; Handrail,

200; Height adjustment mechanism for backrest, 210; housing,

211; Rotary support shaft seating portion 220; Hanging Pin,

230; Spring, 240; button,

241; Locking pin pushing portion, 242; Pressing,

300; Backrest rotation angle adjusting mechanism, 310; Rotational Support Shaft,

311; Gear portion 320; spring,

330; Button, 331; Lock,

331a; Guide groove, 331b; Gear,

331c; Jamming, 332; Pressing,

400; Brake mechanism, 410; Concave,

420; Lever, 421; Control Panel,

422; Locking portion 422a; Overhanging,

500; Knob rotation control mechanism, 510; First member,

511; Axis of rotation, 512; Concave,

520; Second member, 521; Rotary shaft insert,

522; Uneven portion, B1, B2; Bowl,

H1, H2, H3, H4; Axis of rotation.

The present invention for achieving the above object is composed of a bar-shaped support portion which is horizontally arranged to be placed on the ground, and a guide portion that is disposed to be inclined at a predetermined angle from the support portion and a plurality of engaging holes are formed along the longitudinal direction, A pair of supports, which are connected in parallel to each other via a connecting member, each of which has an overall shape of a “∠” shape; A seat which is installed to be adjustable in height at a support of the support via a seat height adjusting mechanism; It is a structure characterized in that the backrest is installed to be adjustable in height to the support portion of the support via the height adjustment mechanism of the backrest.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

According to FIG. 1, the chair according to the present invention has a bar-shaped support part 11 which is horizontally arranged and placed on the ground, and is disposed at an inclined angle at a predetermined angle from the support part 11 and includes a plurality of locking holes 12a along the length direction. A pair of supports (10) formed of a guide portion (12) formed in parallel, connected in parallel to each other via a connecting member (13), and having an overall shape having a “∠” shape; A seat 20 installed on the support 11 of the support 10 via a seat height adjustment mechanism 100 so that the height can be adjusted; The backrest height adjustment mechanism 200 forms a structure consisting of a backrest 30 which is installed to be adjustable in height on the support portion 11 of the support 10 via a medium.

According to the present invention, since the seat 20 and the backrest 30 are directly installed in a pair of supports 10 whose overall shape is "∠", the height is adjustable, the structure is considerably simplified, and the seat Since the load applied to the 20 and the backrest 30 is transmitted directly to the support portion 11 of the support 10 through the guide portion 12 of the support 10, the weight of the seat is supported more stably.

Furthermore, since the seat 20 and the backrest 30 are separately installed on the support 10, the seat 20 and the backrest 30 can be adjusted in various forms without mutual interference.

As the seat height adjustment mechanism 100, as shown in Figures 2 to 5, the moving block 110 is wrapped around the support portion 11 of the support 10 to be movable in the longitudinal direction; A locking pin 120 installed to be movable in the moving block 110 to be inserted into and removed from the locking hole 12a of the support 11; A spring 130 which supports the locking pin 120 in one direction; Rotatingly installed on the moving block 110, the locking pin 120 which is supported in one direction by the spring 130 is pushed into the locking hole 12a. The lever 140, the locking pin pushing portion 141 for pushing the locking pin 120 is supported in one direction by the spring 130 to the locking hole 12a, and the handle portion so that the user can easily lift It consists of 142. The locking pin pushing portion 141 forms a form in which the outer circumferential surface thereof is gradually moved along the rotation axis H1 direction. On the other hand, both ends of the seat 20 is firmly fixed to the seat height adjustment mechanism 100 disposed to face each other. Here, reference numeral "B1" denotes a fastening member such as a bolt for preventing separation of the lever 140 fitted to the rotation shaft H1.

Referring to the operation state of the first, as shown in Figures 2 to 5, when the user grasps the handle 142 and upwards, the lever 140 is moved forward with respect to the rotation axis (H1) Rotated, the locking pin 120 is naturally released from the locking hole 12a of the guide portion 12 by the restoring force of the spring 130. In this state, if the handle portion 142 is tilted downward after adjusting the height of the seat 20, the lever 140 is rotated in a reverse direction about the rotation shaft H1 to be caught while the spring 130 is pressed. The pin 120 is forcibly fitted into the corresponding locking hole 12a of the guide part 12.

As the backrest height adjustment mechanism 200, as shown in Figure 6 and 8, the housing 210 which is fixed to be movable in the longitudinal direction to surround the support portion 11 of the support (10); A locking pin 220 movably installed in the housing 210 to be inserted into the locking hole 12a of the support 11; A spring 230 which supports the locking pin 220 in one direction; The button 210 is installed to be reciprocated in the housing 210 and used as a button 240 for pushing the locking pin 220 which is supported in one direction by the spring 230 to the locking hole 12a. The button 240, the locking pin pushing portion 241 for pushing the locking pin 220 which is supported in one direction by the spring 130 to the locking hole (12a), and the press so that the user can easily operate It consists of a portion 142. The locking pin pushing portion 241 forms a fork, but a surface facing the locking pin 120 is inclined.

Referring to the operation state of the first, as shown in Figures 6 to 8, when the user is holding the housing 210 and presses the pressing portion 242, the button 240 into the housing 210 Since it pushes in and pushes the locking pin 220 in one direction, the spring 230 is pressed and the locking pin 220 is forced out of the locking hole 12a of the guide part 12. In this state, if the pressing part 242 is released after adjusting the height of the backrest 30, the locking pin 220 is naturally brought into the corresponding locking hole 12a of the guide part 12 by the restoring force of the spring 230. While being fitted, the lever 140 naturally returns to its initial position.

The seat height adjustment mechanism 100 or the backrest height adjustment mechanism 200 may be variously modified without being limited to the present embodiment. For example, the seat height adjustment mechanism of the shape shown in FIGS. 6 or 8 may be used as the seat height adjustment mechanism 100, the seat 20 along the guide portion 12 of the support (10). And any of the well-known that can adjust the height of the backrest 30 can be used as the seat height adjustment mechanism 100 or the backrest height adjustment mechanism 200 of the present invention.

On the other hand, the backrest 30 may be firmly fixed to the backrest height adjustment mechanism 200, as in the present embodiment, rotates in the backrest height adjustment mechanism 200 via the backrest rotation angle adjustment mechanism 300 as a medium. It is preferable to install as much as possible.

As the backrest rotation angle adjusting mechanism 300, as shown in Figures 9 and 11, one end is provided with the gear portion 311 is fixed to the backrest 30, the other end is the backrest height adjustment mechanism ( A rotation support shaft 310 rotatably fixed to the housing 210 of the 200; A button 330 installed reciprocally in the housing 210 of the backrest height adjusting mechanism 200 and selectively engaged with the gear part 311; The button 330 was used that consists of a spring 320 to support the ball in one direction. The button 330 includes a guide groove 331a into which the rotation support shaft 310 is fitted, a gear portion 331b selectively engaged with the gear portion 311 of the rotation support shaft 310, and a spring 320. A locking part 331 having a locking protrusion 331c to which both ends of the upper and lower ends thereof are supported against each other; It is made of a pressing portion 142 so that the user can easily operate, the pressing portion 142 is guided by being inserted into the housing 210 of the backrest height adjustment mechanism 200 in a linear reciprocating manner. Here, reference numeral "211" indicates a rotation support shaft seating portion provided in the housing 210, the rotation support shaft 310 is rotatably inserted.

Referring to the operation state of the first, as shown in Figures 9 to 11, when the user presses the pressing portion 332 protruding out of the housing 210, the button 330 is inside the housing 210 Since the spring 320 is pressed, the gear part 331b of the button locking part 331 is spaced apart from the gear part 311 of the rotation support shaft 310 to release the mutual engagement. In this state, if the pressing portion 332 is released after adjusting the inclination angle of the backrest 30, the button 330 is moved outwardly by the restoring force of the spring 320, so that the button locking portion The gear part 331b of 331 is engaged with the gear part 311 of the corresponding rotation support shaft 310.

In addition, in the present embodiment, as shown in Figure 1 and 6 and 10, the headrest 40 is rotatably installed in the front and rear of the backrest 30, the present invention is not limited thereto, It can be variously modified. For example, the headrest may be integrally formed on the upper backrest 30, or the headrest made of a separate material may be firmly fixed to the upper part of the backrest 30 through a fastening member such as a bolt or a screw. The headrest is made to be may be provided to adjust the height at the top of the backrest (30). In addition, all known headrest 40 can be applied to the present invention, of course.

1, 6, and 10, a shoulder portion 41 is formed on the headrest 40, and a seating portion 42 into which the neck of the seater is fitted is formed between the shoulder portions 41, and the backrest is formed. The shoulder seat portion 31 is formed in front of the 30, and when the headrest 40 is flipped forward, the shoulder portion 41 of the headrest 40 is inserted into the shoulder seat portion 31 of the backrest 30. To form a structure that is supported rearward. In the present embodiment, the headrest connecting rod 32 protruding upward from the backrest 30 is installed, and the headrest connecting groove 32 is formed in the headrest 40 so that the headrest connecting rod 32 is inserted into the connecting rod. In the state of being inserted into the groove 43 was connected to the headrest 40 through the rotation axis (H) to be rotated in the front and rear direction. In this case, since the connection portion of the backrest 30 and the headrest 40 is placed inside the headrest 40, the rotational function of the headrest 40 is prevented from being deteriorated by foreign substances such as dust, and the appearance is There is an advantage to being beautiful. In addition, the locking projection 41a is formed in the shoulder portion 41 and the locking projection 31a is formed in the shoulder seating portion 31, so that the locking protrusion 41a of the shoulder portion 41 is the shoulder seating portion ( 31 is detachably engaged with the locking jaw 31a. In this case, since the shoulder portion 41 of the headrest 40 is stably seated on the shoulder seating portion 31 of the backrest 30, there is an advantage of preventing the headrest 40 from being unnecessarily flipped backwards. .

Referring to Figure 1, 6 and 10 with reference to the cross-linking operation of the backrest 30 and the headrest 40 as follows.

First, in the state as shown in Figure 1, when the external force is applied to the top of the headrest 40, when the headrest 40 is flipped backward, the shoulder portion locking projection 41a and the shoulder seating portion locking jaw 31 As the mutual engagement between the fork) is forcibly released, as shown in FIGS. 6 and 10, the headrest 40 is flipped backward about the rotation shaft H2. In this state, when the seater inserts his neck part into the seating part 42 between the shoulder parts 41 and the head part rests on the headrest 40, the shoulder part 41 lifts both shoulder parts of the seater. Naturally covered. Here, when the chair according to the present invention is used for a general purpose, the friction between the pivotal connection portion of the headrest 40 and the backrest 30 is increased, that is, the rotation of the headrest 40 is restricted, the head While the head 40 of the seat is sufficiently supported while the support 40 is rotated, when the chair according to the present invention is used as a head winding chair, the headrest 40 and the backrest 30 are connected to each other. The friction of the part is reduced, that is, the rotation of the headrest 40 is made natural, and the top of the headrest 40 is fixed to the sink (not shown), so that the head restraint 40 is placed on the sink and fixed. Keep the head of the seat fully supported. In this state, when the seated person lifts the head forward from the seating portion 42 of the headrest 40 by bending the body forward after raising the head, the headrest 40 is turned forward, Since the headrest 40 is rotated forward with respect to (H), the headrest shoulder portion 41 is inserted into the backrest shoulder seating portion 31 and supported rearward, so that the shoulder portion locking projection 41a is seated on the shoulder. Engaged in and fixed to the secondary engaging jaw (31a) is to maintain a state as shown in FIG. In this state, the backrest 30 supports the lower back of the seat, and the headrest 40 supports the upper back of the seat. That is, the headrest 40 is used as an auxiliary backrest.

According to the present embodiment, the head restraint 40 can be unfolded from the backrest 30 and used as a head restraint, and the head restraint 40 can be folded into the back rest 30 to be used as an auxiliary backrest. This has the advantage of greatly improving convenience. In addition, the shoulder portion 41 of the headrest 40 is inserted into the shoulder seating portion 31 of the backrest 30 to form a structure that is supported backward, so that the height of the headrest 40 is properly maintained Since the size of the shoulder portion 41 can be enlarged so that the shoulder portion of the seat is sufficiently covered by the shoulder portion 41, it is also expected to improve the splashing function when used as a chair for the head.

In addition, in order to facilitate the movement of the chair as shown in Figure 1, it is preferable to install the front wheel 14 and the rear wheel 15 on the support portion 11 of the support (10). More preferably, the front wheel 14 is rotatably installed around the connecting shaft with the support 11, so that the operation is convenient when the chair is moved.

In this case, a problem may occur in fixing the position of the chair. However, as shown in FIGS. 1, 12, and 13A, the braking of the rear wheel 15 selectively to the support 11 of the support 10 is performed. When the brake mechanism 400 can be installed, such a problem can be easily solved. As the brake mechanism 400, all known ones may be applied, but in the present embodiment, an uneven portion 410 provided in the rear wheel 15; Rotatingly installed on the wheel connecting member (11a) of the support portion 11 was used that consists of a lever 420 to selectively engage the uneven portion 410. The lever 420 is composed of a control unit 421 and a locking portion 422 having a locking projection 422a engaging with the concave-convex portion 410 so that the user can easily operate. Here, the uneven portion 410 may be made of a separate material and may be installed on the rear wheel 15 through a fastening member such as a bolt or a screw, or may be integrally formed on the rear wheel 15. On the other hand, reference numeral "11a" indicates a wheel connecting member connected to the front end of the support portion 11 via a fixing pin 11b, "H3" is capable of rotating the rear wheel 15 and the wheel connecting member (11a). "H4" represents a rotating shaft rotatably connecting the lever 420 and the wheel connecting member (11a), the rotating shaft (H4) is spaced apart from the rotating shaft (H3) by a predetermined distance.

Referring to FIGS. 13A and 13B, an operation state of the brake mechanism 400 is as follows.

First, in a state as shown in FIG. 13A, when the user lifts the operation unit 421 by the foot or the hand, the lever 420 is rotated around the rotation shaft H4 to lock the engagement that is engaged with the uneven portion 410. Since the locking protrusion 422a of the portion 422 is spaced apart from the uneven portion 410, the locking of the rear wheel 15 is released as shown in FIG. 13B. In such a state, when the operation unit 421 is pushed downward after moving the chair to the corresponding position, the lever 420 is rotated in the reverse direction about the rotation shaft H4, and the locking projection 422a of the locking unit 422 is rotated. ) Is engaged with the uneven portion 410, the rear wheel 15 is locked rotatably as shown in Figure 13a. Here, the friction between the rotational connecting portion of the lever 420 and the wheel connecting member 11a is increased, that is, the rotation of the lever 420 is restricted, so that the lever 420 is sufficiently positioned without an external force applied thereto. To be fixed.

In order to improve the ease of operation of the chair as shown in Figures 1 and 14, it is preferable to install the handle 60 to the guide portion 12 of the support (10). In the present embodiment, the handle 60 is rotatably installed on the support 10 via the handle rotation control mechanism 500, but the present invention is not limited thereto, but may be variously modified. . For example, the handle 60, which is made of a separate material, may be firmly fixed to the support 10, and its shape may be variously changed.

According to FIG. 14, the handle rotation control mechanism 500 includes a first member 510 having a rotating shaft 511 and an uneven portion 512 and fixed to an upper end of the support guide portion 12; The rotary shaft inserting portion 521 and the concave-convex portion 522, the overall shape is composed of a second member 520 is fixed to both ends of the handle 60 of the "C" shape. Here, reference numeral "B2" indicates a bolt that is inserted through the rotation shaft inserting portion 521 and fixed to the rotation shaft 511, which performs a function of preventing the separation of the second member 510. The knob rotation control mechanism 500 is not limited to this embodiment, and all known ones capable of controlling the rotation angle of the knob 60 are applicable.

Referring to Figure 14 schematically illustrating the operation of the handle rotation control mechanism 500 as follows.

First, when the "c" shaped handle 60 is pushed forward or pulled backward, the uneven parts 512 and 522 of the first and second members 510 and 520 engaged with each other support it, so that the chair is pushed forward. It will be pulled backwards.

On the other hand, when the handle 60 is folded upward or downward, the uneven portion 522 of the second member 520 is pushed out of the uneven portion 512 of the first member 510, and the handle 60 is pulled out. Because the second member 520 is close to each other in the direction facing each other by the elasticity of the ()), the handle 60 is a modestly "tuck" and "tuck" sound about the rotation axis 511 of the first member 510. Is rotated. When the external force applied to the handle 60 is stopped after the handle 60 is rotated at an appropriate angle, both second members 520 are opened to each other by the restoring force of the handle 60, and the second member uneven portion ( 522 maintains the state engaged with the first member concave-convex portion 512 in the position.

According to the present invention as described above, since the seat and the backrest are directly installed in a pair of supports having an overall shape of the "∠" form, the structure is considerably simplified, and is also applied to the seat and the backrest. Since the losing load is transmitted directly to the support, the weight of the seat is supported more stably.

Furthermore, since the seat and the backrest are separately installed on the support, there is an effect that the seat and the backrest can be adjusted in various forms without mutual interference.

Claims (15)

It consists of a bar-shaped support portion 11 which is arranged horizontally and placed on the ground, and a guide portion 12 which is inclined at a predetermined angle from the support portion 11 and has a plurality of engaging holes 12a formed along the longitudinal direction. A pair of supports 10 connected in parallel with each other via a connecting member 13 to form a “∠” shape; A seat 20 installed on the support 11 of the support 10 via a seat height adjustment mechanism 100 so that the height can be adjusted; Chair back, characterized in that consisting of the backrest 30 is installed to adjust the height to the support portion 11 of the support 10 via the height adjustment mechanism 200. According to claim 1, The seat height adjustment mechanism 100 and / or backrest height adjustment mechanism 200, A moving block (110) surrounding the support (11) of the support (10) and fixedly movable in the longitudinal direction; A locking pin 120 installed to be movable in the moving block 110 to be inserted into and removed from the locking hole 12a of the support 11; A spring 130 which supports the locking pin 120 in one direction; The chair is rotatably installed in the movable block 110, characterized by consisting of a lever 140 for pushing the locking pin 120 which is supported in one direction by the spring 130 to the locking hole (12a). According to claim 1, The seat height adjustment mechanism 100 and / or backrest height adjustment mechanism 200, A housing 210 which is fixed to be movable in the longitudinal direction when surrounding the support 11 of the support 10; A locking pin 220 movably installed in the housing 210 to be inserted into the locking hole 12a of the support 11; A spring 230 which supports the locking pin 220 in one direction; The chair is installed in the housing 210 so as to reciprocate, characterized in that consisting of a button 240 for pushing the locking pin 220 which is supported in one direction by the spring 230 to the locking hole (12a). The chair according to claim 1, wherein the backrest (30) is rotatably installed on the backrest height adjustment mechanism (200) via a backrest rotation angle adjustment mechanism (300). The method of claim 4, wherein the backrest rotation angle adjustment mechanism 300, One end of which the gear part 311 is provided is fixed to the backrest 30, and the other end of the support shaft 310 is rotatably fixed to the housing 210 of the backrest height adjusting mechanism 200; A button 330 installed reciprocally in the housing 210 of the backrest height adjusting mechanism 200 and selectively engaged with the gear part 311; The chair, characterized in that made of a spring 320 to support the button 330 in one direction. The chair according to claim 4, wherein the headrest (40) is rotatably installed in the front and rear of the backrest (30). According to claim 6, wherein the headrest 40 is formed with a shoulder portion 41 is formed between the shoulder portion 41 seating portion 42 is fitted to the neck of the seat, the front of the backrest 30 The shoulder seating portion 31 is formed at the front, and when the headrest 40 is folded forward, the shoulder portion 41 of the headrest 40 is inserted into the shoulder seating portion 31 of the backrest 30 to be supported backward. Chair characterized in that. The method of claim 7, wherein the shoulder portion 41 is provided with a locking projection 41a, the shoulder seating portion 31 is provided with a locking jaw 31a, the locking projection 41a of the shoulder portion 41 A chair characterized in that the detachable engagement is fixed to the locking jaw (31a) of the shoulder seating portion (31). According to claim 7, wherein the backrest 30 is provided with a headrest connecting rod 32 protruding upward, the headrest 40 is formed with a connecting rod insertion groove 43, the headrest connecting rod 32 is connected Chair, characterized in that connected to the headrest 40 in the front and rear direction via the rotation shaft (H) in the state inserted into the insertion groove 43. 10. Chair according to any one of the preceding claims, characterized in that the front wheel (14) and the rear wheel (15) are provided on the support (11) of the support (10). 11. A chair according to claim 10, characterized in that a brake mechanism (400) is provided on the support (11) of the support (10) for selectively braking the movement of the rear wheel (15). The method of claim 11, wherein the brake mechanism 400, An uneven portion 410 provided on the rear wheel 15; The chair is characterized in that consisting of a lever 420 is rotatably installed on the wheel connecting member (11a) of the support portion (11) to selectively engage the uneven portion (410). 10. Chair according to any one of the preceding claims, characterized in that the handle (60) is provided on the guide portion (12) of the support (10). 14. The chair according to claim 13, wherein the handle (60) is rotatably installed on the support (10) via a handle rotation control mechanism (500). The method of claim 14, wherein the handle rotation control mechanism 500, A first member 510 having a rotating shaft 511 and an uneven portion 512 fixed to an upper end of the support guide portion 12; Chair having a rotating shaft insertion portion 521 and the concave-convex portion 522, the second member 520 is fixed to both ends of the handle 60, the overall shape of the "c" shape .