KR20170008406A

KR20170008406A - Tilting chair

Info

Publication number: KR20170008406A
Application number: KR1020150099525A
Authority: KR
Inventors: 이두형
Original assignee: 이두형
Priority date: 2015-07-14
Filing date: 2015-07-14
Publication date: 2017-01-24

Abstract

A tilting chair is disclosed. According to one aspect of the present invention, the present invention provides the tilting chair, comprising: a lower bracket supported at the predetermined height by a supporter and having a rail unit extended at an arc shape in the horizontal direction; a sliding bracket fastened to a lower portion of a seat to be supported by the lower bracket, having the arc shape corresponding to the rail unit to be fastened to the rail unit, and having a skid unit horizontally slid along the rail unit; and a first gas cylinder of which one end is hinged to a front side of the lower bracket through a first hinge pine, and the other end is hinged to a rear side of the sliding bracket through a second hinge pin.

Description

Tilting Chair {TILTING CHAIR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilting chair, and more particularly, to a tilting chair capable of tilting a seat or a seatback.

The tilting chair, which is widely used in offices and the like, is provided with a structure for lowering the seat back, adjusting the height of the seat, and the like. Usually, such a structure is provided with an elastic body, a gas cylinder, or the like in the link structure, so that the function of the seat or the seatback can be adjusted and the angle can be adjusted. Such a tilting chair contributes to improving the feeling of seating by making adjustments according to the body shape and the use environment of each user. However, the tilting chair can be a main factor for raising the product price due to the complicated link structure, There is a problem that a malfunction frequently occurs.

Embodiments of the present invention provide a tilting chair having a structure capable of reducing manufacturing costs and improving durability and minimizing malfunction or damage.

According to an aspect of the present invention, there is provided a bracket comprising: a lower bracket supported by a supporter at a predetermined height, the bracket having a rail portion extending in an arc shape along a front-rear direction; And a skid portion which is coupled to the lower portion of the seat and is supported by the lower bracket and is formed in an arc shape corresponding to the rail portion and is engaged with the rail portion and slidable in the forward and backward directions along the rail portion. And a first gas cylinder hinged to the front of the lower bracket via a first hinge pin and hinged to the rear of the sliding bracket via a second hinge pin at the other end, have.

According to another aspect of the invention, there is provided a seat comprising: a seat providing a seating space; A arm rest disposed on the left and right sides of the seat; A seat back which is rotatably fastened to one side of the armrest through a sixth hinge shaft spaced upward from the seat by a predetermined distance and is capable of being tilted about the sixth hinge shaft; A first link bar having one end hinged to a lower side of the armrest through a third hinge shaft; And a second link bar hinged to the other end of the first link bar through a fourth hinge shaft and hinged to the lower portion of the seatback via a fifth hinge axis.

The tilting chair according to the embodiments of the present invention has a structure in which the sliding bracket is contactably supported on the lower bracket by a contact having an arc shape and can support the weight of the user more stably as the supporting area becomes wider , It is possible to improve the operation feeling and minimize the breakage or malfunction of the product.

In addition, since the tilting chair according to the embodiments of the present invention is widely distributed in the load on the rail portion of the lower bracket, it is not necessarily required to use a steel having a high rigidity, and a relatively cheap material such as plastic is used The manufacturing cost of the product can be reduced.

In addition, the tilting chair according to the embodiments of the present invention includes the first and second gas cylinders, and the seat and the seatback can be operated to be tilted so that the user can sit in a more comfortable posture.

Further, according to the tilting chair according to the embodiments of the present invention, as the seat back is rotated about the sixth hinge axis on the upper side of the seat, it is possible to prevent the center of gravity from leaning too much backward even if the seat back is bent, The portion extending from the sixth hinge axis to the lower end of the seat back can be advanced as the seat back is turned over to support the lower side of the user's lower back, thereby providing a more comfortable seating feeling.

In addition, the tilting chair according to the embodiments of the present invention minimizes the center of gravity of the tilting back even when the seat back or the seat is being pivoted by the pivoting center arrangement or the sliding movement of the seat as described above The load applied to each member can be uniformly dispersed to prevent malfunction or breakage while minimizing the use of reinforcing structure or expensive steel due to centering of the center of gravity Thereby contributing to lowering the production cost of the product.

Further, the tilting chair according to the embodiments of the present invention minimizes the center of gravity of the tilting back even when it is tilted, so that it is possible to use a supporting leg having a smaller radius even in the supporter substructure for supporting the chair, Increasing the degree of freedom also brings many benefits in terms of design.

1 is a first perspective view of a tilting chair according to an embodiment of the present invention.
2 is a second perspective view of the tilting chair shown in Fig.
3 is a side view of the tilting chair shown in Fig.
Fig. 4 is a perspective view showing the lower structure of the tilting chair shown in Figs. 1 to 3. Fig.
5 is a side view of the substructure shown in FIG.
6 is a side sectional view of the substructure shown in Fig.
Fig. 7 is a side view showing a state in which the substructure shown in Figs. 4 to 6 is installed on the seat and the seatback.
8 is a first operation diagram showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat is tilted.
Fig. 9 is a second operational diagram showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat is tilted.
10 is a first operational view showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat back is tilted.
11 is a second operational view showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat back is tilted.
12 is a perspective view of a tilting chair according to another embodiment of the present invention.
13 is a side view of the tilting chair shown in Fig.
FIG. 14 is a view showing a part of the armrest in the tilting chair shown in FIG.
15 is a partially enlarged view of Fig.
Fig. 16 is a perspective view showing the sheet portion omitted in Fig. 15. Fig.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It is to be understood, however, that the following examples are provided to facilitate understanding of the present invention, and the scope of the present invention is not limited to the following examples. In addition, the following embodiments are provided to explain the present invention more fully to those skilled in the art. Those skilled in the art will appreciate that those skilled in the art, Will be omitted.

1 is a first perspective view of a tilting chair according to an embodiment of the present invention. 2 is a second perspective view of the tilting chair shown in Fig. 3 is a side view of the tilting chair shown in Fig.

1 to 3, the tilting chair 100 according to the present embodiment may include a seat 110 for providing a seating space and a seatback 120 for a backrest. The armrests 130 can be provided on the left and right sides of the seat 110, as required, for the user to hold his / her arms.

Also, the tilting chair 100 according to the present embodiment may include a lower structure 140 disposed under the seat 110. The lower structure 140 can support the seat 110 and the seatback 120 while providing the seat 110 or the seatback 120 with the function of swinging. That is, the lower structure 140 allows the seat 110 and the seatback 120 to be rearwardly tilted when the user is seated. This will be described in detail with reference to FIGS. 4 and 5, which will be described later. Meanwhile, the lower structure 140 may be supported at a predetermined height by the supporter 150, and the supporter 150 may be formed to be adjustable in height.

Hereinafter, the lower structure 140 as described above will be described in more detail with reference to the drawings.

Fig. 4 is a perspective view showing the lower structure of the tilting chair shown in Figs. 1 to 3. Fig. 5 is a side view of the substructure shown in FIG. 6 is a side sectional view of the substructure shown in Fig. Fig. 7 is a side view showing a state in which the substructure shown in Figs. 4 to 6 is installed on the seat and the seatback.

Referring to FIGS. 4 to 7, the tilting chair 100 according to the present embodiment may include a lower bracket 141. The lower bracket 141 may be disposed on the lower side of the seat 110 and the bottom surface may be fastened to the upper end of the supporter 150.

The lower bracket 141 may have a rail portion 141a. The rail portion 141a may be formed in a concave groove on the upper surface of the lower bracket 141 and may extend in the front-rear direction along the lower bracket 141. [ In addition, the rail part 141a may be extended in an arc shape with a predetermined curvature. Alternatively, the rail portion 141a may have a circular arc shape protruding downward. This is for the purpose of realizing the function of bending the seat 110 through the sliding movement of the sliding bracket 142 to be described later.

The rail portion 141a may be made of a material having less friction so that the sliding bracket 142 can be smoothly slid. For example, the rail portion 141a may be formed of plastic or acetal plastic in part or whole. Particularly, acetal plastics are relatively low in friction so that sliding of the sliding bracket 142 can be smoothly carried out, while being resistant to pressure and having high durability, it is possible to reduce damage during use and prolong product life. Furthermore, such plastic or acetal plastics are generally inexpensive materials as compared to steel used in chairs, and can contribute to lowering the product cost by minimizing the use of steel.

The pair of rails 141a may be disposed at left and right sides of the lower bracket 141 at predetermined intervals. However, if necessary, a plurality of the rails 141a may be provided.

The lower bracket 141 may include a first hinge pin H1. The first hinge pin H1 may be disposed in a front portion of the lower bracket 141 and may be horizontally elongated in a lateral direction of the lower bracket 141. [

Meanwhile, the tilting chair 100 according to the present embodiment may include a sliding bracket 142. The sliding bracket 142 may be coupled to the lower bracket 141 and supported by the lower bracket 141.

The sliding bracket 142 may include a skid portion 142a. The skid portion 142a may be formed as a convex projection on the lower portion of the sliding bracket 142 and may extend in the front-rear direction along the sliding bracket 142. [ Further, the skid portion 142a may be extended in an arc shape along the front-rear direction so as to correspond to the arc-shaped rail portion 141a.

The skid portion 142a may be fastened to the rail portion 141a so as to be slidable along the rail portion 141a. More specifically, the skid portion 142a can be fastened to the rail portion 141a so as to be engaged with a groove-shaped rail portion 141a having a concave convex shape in a concave shape and to be able to slide along the rail portion 141a. However, the rail portion 141a and the skid portion 142a are not limited to the shapes of the above-described grooves, projections, and the like, as long as the skid portion 142a can slide along the rail portion 141a .

Further, the skid portion 142a may be made of a material with less friction so that the skid portion 142a can smoothly slide on the rail portion 141a. For example, the skid portion 142a may be formed entirely or partially of plastic or acetal plastic. Use of such a plastic or acetal plastic can bring about similar effects as in the railing 141a described above.

Further, the tilting chair 100 according to the present embodiment has a structure in which the skid portion 142a is seated and supported on a railing portion 141a extending in a circular arc shape, and the sliding bracket 142 and the skid portion 142a are supported And is supported by a large area over the large area 141a. That is, the load transmitted to the skid portion 142a can be evenly dispersed and stably supported over the entire rail portion 141a extended in the front-rear direction.

Therefore, the skid portion 142a and the rail portion 141a are not required to have a large structural rigidity, which makes it possible to use a material such as plastic having a smaller rigidity than the steel material. That is, the rail portion 141a and the skid portion 142a can reduce the use of the steel material compared to the prior art, thereby reducing the production cost. Further, since the skid portion 142a is slidably moved in a state of being stably supported, a smoother operation feeling can be realized.

In addition, the above-mentioned advantage can be compared with a conventional tilting chair in which each frame or bracket has a point contact support structure via a pin. That is, in the conventional tilting chair, a concentrated load is applied to the pin, the feeling of operation is hindered and the tilting chair 100 according to the present embodiment easily breaks during repeated use. On the other hand, Is supported in contact with the large area on the rail portion 141a, so that a smoother working feeling can be obtained and there is no fear of breakage or failure even in long-term use.

On the other hand, the skid portion 142a may be provided with a pair of left and right spaced apart portions corresponding to the pair of rails 141a. Needless to say, a plurality of skid portions 142a may be provided along with the number of the rail portions 141a.

The sliding bracket 142 may include a second hinge pin H2. The second hinge pin H2 may be disposed at a rear portion of the sliding bracket 142 and may be horizontally elongated in the lateral direction of the sliding bracket 142. [ The second hinge pin H2 is spaced apart from the first hinge pin H1 by a predetermined distance in the front-rear direction.

The sliding bracket 142 may have a link arm 142b. The link arm 142b may be formed extending rearward from the rear end of the sliding bracket 142 by a predetermined length. The link arm 142b is fixed to the sliding bracket 142 and can be moved together with the sliding bracket 142 when the sliding bracket 142 is slid.

In addition, a third hinge pin H3 may be provided at a rear end of the link arm 142b. The third hinge pin H3 may be horizontally elongated at the rear end of the link arm 142b and may be spaced apart from the second hinge pin H2 by a predetermined distance in the front-rear direction.

Meanwhile, a base frame 111 and a seat 110 may be provided on the sliding bracket 142. The base frame 111 and the seat 110 are supported on the sliding bracket 142 and can be moved together with the sliding bracket 142. The base frame 111 provides a support frame for mounting the seat 110 and the seatback 120 and the seatback 120 is rotatable on the base frame 111 via the sixth hinge pin H6 .

The tilting chair 100 according to the present embodiment may include a first gas cylinder 143. The first gas cylinder 143 may be coupled to one end of the first hinge pin H1 such that the first hinge pin H1 is rotatable and the other end of the first gas cylinder 143 may be rotatably coupled to the second hinge pin H2. That is, the first gas cylinder 143 can be fastened between the first hinge pin H1 of the lower bracket 141 and the second hinge pin H2 of the sliding bracket 142. The first gas cylinder 143 supports the sliding bracket 142 with respect to the lower bracket 141 to fix the position of the sliding bracket 142 or return the moved sliding bracket 142 to the original position, Thereby controlling the bending function of the bobbin 110.

Also, the tilting chair 100 according to the present embodiment may include first and second link bars 144 and 145. The first link bar 144 may be coupled to one end of the third link bar 144 so as to be rotatable with respect to the third hinge pin H3 and the other end of the first link bar 144 may be coupled to the second link bar 145 through the fourth hinge pin H4 . The fourth hinge pin H4 links the first and second link bars 144 and 145 to the other end of the first link bar 144 and the other end of the second link bar 145 in the left and right directions And may be spaced apart from the third hinge pin H3 by a predetermined distance in the longitudinal direction. The other end of the second link bar 145 may be coupled to the first link bar 144 through the fourth hinge pin H4 and the other end of the second link bar 145 may be coupled to the rear side of the seatback 120 via the fifth hinge pin H5. As shown in Fig. The fifth hinge pin H5 may be spaced downward from the sixth hinge pin H6 that hinges the seatback 120 and the base frame 111 downwardly.

In addition, the tilting chair 100 according to the present embodiment may include a second gas cylinder 146. The second gas cylinder 146 may be fastened to one end of the second hinge pin H2 so as to be rotatable and the other end of the second gas cylinder 146 may be fastened to the fourth hinge pin H4 so as to be rotatable. That is, the second gas cylinder 146 can be fastened between the second hinge pin H2 of the sliding bracket 142 and the fourth hinge pin H4 connecting the first and second link bars 144, 145 have. The second gas cylinder 146 receives a compressive force between the second and fourth hinge pins H2 and H4 as the seatback 120 is turned backward and the seatback 120 is positioned Thereby returning the seat back 120 to its home position. In other words, the second gas cylinder 146 controls the bending function of the seatback 120.

In addition, the tilting chair 100 according to the present embodiment may include a cover unit 160. FIG. The cover 160 covers the link arm 142b and the first and second link bars 144 and 145 disposed at the lower side of the rear surface of the tilting chair 100 and shields the first and second link bars 144 and 145 from the outside, And the appearance of the tilting chair 100 can be enhanced.

8 is a first operation diagram showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat is tilted. Fig. 9 is a second operational diagram showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat is tilted.

8 and 9 illustrate the operation when the sheet 110 is tilted to a predetermined degree, and the operation when the sheet 110 is tilted will be described with reference to this. 6, when the user is seated on the seat 110 and applies weight to the back of the seat 110 or leans against the seatback 120, the sliding bracket 142 is rotated by the weight of the user, And is slid forward to a predetermined extent along the portion 141a. That is, the sliding bracket 142 is moved to the front side of the lower bracket 141 along the arcuate rail 141a. As the sliding bracket 142 is moved, the first gas cylinder 143 between the first and second hinge pins H1 and H2 receives the compressive force and supports the sliding bracket 142 with respect to the base frame 111 do. When the sliding bracket 142 is moved as described above, the seat 110 is tilted to a predetermined angle with respect to the initial state, and the user can appropriately sit back in a comfortable posture by appropriately tilting the seat 110 backward do.

10 is a first operational view showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat back is tilted. 11 is a second operational view showing the operation of the tilting chair shown in Figs. 1 to 7 when the seat back is tilted.

10 and 11 illustrate the operation when the seatback 120 is turned backward by a predetermined amount, and the operation when the seatback 120 is worn will be described with reference to the drawings. First, in the initial state as shown in FIG. 6, the user is seated and leans against the seat back 120 to apply weight. When the weight is applied to the seat back 120, the seat back 120 is rotated about the sixth hinge pin H6 fastened to the base frame 111 by a predetermined amount. The fifth hinge pin H5 disposed at the lower portion of the sixth hinge pin H6 and fastened to the rear surface of the seatback 120 is engaged with the seatback 120 when the seatback 120 is rotated about the sixth hinge pin H6, 120, respectively. The fourth hinge pin H4 connecting the first and second link bars 144 and 145 is moved forward by a predetermined amount and the second gas cylinder 146 is moved by the second and fourth hinge pins H2 and H2, H4) and receives compressive force. The seatback 120 can be tilted rearward about the sixth hinge pin H6 while being supported by the second gas cylinder 146 so that the user can use the seatback 120 with the desired angle .

8 and 9 illustrate a case in which the seat 110 or the seatback 120 is operated in a bumped state for the sake of convenience of explanation. However, the operation of swinging the seat 110 and the seatback 120 . That is, when the user sits on the seat 110 and applies weight to the seatback 120, the seat 110 can be tilted to a predetermined degree through the operation as shown in Fig. 8, The seat back 120 is also turned backward by a predetermined amount. Accordingly, the user can appropriately adjust the degree of bending of the seat 110 and the seatback 120, respectively, so that the seat can be seated in a more comfortable posture.

As described above, the tilting chair 100 according to the embodiments of the present invention has a structure in which the sliding bracket 142 is contacted and supported on the lower bracket 141 with the arc-shaped contact, Accordingly, it is possible to more stably support the user's body weight and the like, to improve the feeling of operation, and to minimize damage or malfunction of the product.

Further, since the tilting chair 100 according to the embodiments of the present invention is widely distributed in the load on the rail portion 141a of the lower bracket 141, the use of a steel having a high rigidity is not necessarily required, It is possible to reduce the manufacturing cost of the product by making it possible to use plastic, which is an inexpensive material.

The tilting chair 100 according to the embodiments of the present invention includes the first and second gas cylinders 143 and 146 and allows the seat 110 and the seatback 120 to be pivoted, So that the seat can be seated in a more comfortable posture.

12 is a perspective view of a tilting chair according to another embodiment of the present invention. 13 is a side view of the tilting chair shown in Fig. FIG. 14 is a view showing a part of the armrest in the tilting chair shown in FIG. 15 is a partially enlarged view of Fig. Fig. 16 is a perspective view showing the sheet portion omitted in Fig. 15. Fig.

Referring to FIGS. 12 to 16, the tilting chair 200 according to the present embodiment includes a seat 210 for providing a seating space, a seatback 220 for a backrest, and a seat 210 disposed at left and right sides of the seat 210, And may include an arm rest 230 that can be mounted. This is similar to the tilting chair 100 of the previous embodiment.

The tilting chair 200 according to the present embodiment may be formed such that the armrest 230 extends to the lower portion of the seat 210 and the lower portion of the armrest 230 forms a part of the lower structure 140 of the above- do. More specifically, the tilting chair 200 according to the present embodiment may include a sliding bracket 242 integrally formed under the armrest 230. The sliding bracket 242 of the present embodiment corresponds to the sliding bracket 142 of the above embodiment and has a skid portion formed in an arc shape along the front and rear direction and can be slidably moved with respect to a lower bracket 241 to be described later . The sliding bracket 242 is formed integrally with the lower portion of the armrest 230. The sliding bracket 242 may be integrally formed with the armrest 230 in the same manner as the above- The number of parts can be reduced and the assembling property can be improved.

Meanwhile, the tilting chair 200 according to the present embodiment may include a lower bracket 241 and a supporter 250 for supporting the lower bracket 241 at a predetermined height. The lower bracket 241 and the supporter 250 correspond to the lower bracket 141 and the supporter 150 of the embodiment described above and the lower bracket 241 may include a circular rail portion. The bracket 242 is engaged with the rail portion by sliding on the skid portion so as to implement the swinging motion of the seat 210. The operation principle is similar to the above-described embodiment except that the sliding bracket 242 is formed integrally with the lower portion of the armrest 230, and thus a detailed description thereof will be omitted.

The tilting chair 200 according to the present embodiment may include a first gas cylinder 243 for controlling the movement of the sliding bracket 242 to control the degree of swing of the seat 210. The first gas cylinder 243 may be formed similarly to the first gas cylinder 143 of the above-described embodiment.

The tilting chair 200 according to the present embodiment has a structure for swinging the seatback 220 and includes a link bracket 242b provided below the armrest 230 or one side of the sliding bracket 242, A first link bar 244 hinged to one side of the seat back 242b, a second link bar 245 hinged to one side of the first link bar 244, A gas cylinder 246 may be provided.

More specifically, the link bracket 242b may be provided at one side of the sliding bracket 242, and the first link bar 244 may be hinged to the link bracket 242b via the third hinge axis H3 . The other end of the first link bar 244 may be hinged to one end of the second link bar 245 through the fourth hinge axis H4 and the other end of the second link bar 245 may be hinged to the lower end of the seatback 220 Through the fifth hinge axis H5. Meanwhile, the second gas cylinder 246 may be hinged to the sliding bracket 242 through one end of the second hinge axis H2 and the other end may be hinged to the first and second link bars 244 and 245 And can be hinged to the fourth hinge axis H4. The second gas cylinder 246 is pulled or pushed between the second hinge axis H2 and the fourth hinge axis H4 as the second gas cylinder 246 is compressed or elongated so that the first and second link bars 244 and 245 And the degree of bending of the seat back 220 can be adjusted. The operation of the second gas cylinder 246 is similar to the second gas cylinder 146 of the above-described embodiment (see FIG. 8).

In the tilting chair 200 according to the present embodiment, the seatback 220 is coupled to a sixth hinge shaft H6 provided at one side of the upper portion of the armrest 230 and rotates about the sixth hinge axis H6 . That is, the seatback 220 can be rotated about the sixth hinge axis H6 to adjust the degree of the tilting, and the second gas cylinder 246 is compressed or stretched to rotate the sixth hinge axis H6 Thereby causing the seat back 220 to be pivoted about its center.

The sixth hinge axis H6 may be disposed at a predetermined distance from the upper end of the seat 210 and the fifth hinge axis H5 at which the second link bar 245 is hinge- And may be disposed at a position spaced apart from the hinge axis H6 by a predetermined distance. This is distinguished from a conventional structure in which a seatback is hinged to a portion where the seatback meets the seat in a conventional tilting chair and is pivotally or tilted about the seat. In other words, in the related art, when the seat back is directly coupled at the portion where the seat back meets the seat and is rotated around the seat back, the entire center of gravity is shifted backward when the seat back is tilted, And there is a problem that the feeling of sitting is hindered.

However, in the case of the tilting chair 200 according to the present embodiment, as the seatback 220 is rotated about the sixth hinge axis H6 on the upper side of the seat 210, In particular, the portion from the sixth hinge axis H6 to the lower end of the seatback 220 is advanced as the seatback 220 is turned, so that the lower portion of the user's lower back can be supported So that a more comfortable sitting feeling can be provided.

Since the sliding bracket 242 integrally formed at the lower portion of the armrest 230 can be made to slide along the lower bracket 241 in the form of an arc similarly to the above embodiment, 210 are tilted, the overall center of gravity does not sway backward, and a stable posture can be maintained. As a result, the above-described rotation of the seat back 220 and the movement of the seat 210 by the sliding movement of the seat 210 can minimize the overall center of gravity of the seat back 220 when the seat back 220 or the seat 210 is lifted. In particular, it is possible to uniformly distribute the loads applied to the respective members, thereby preventing malfunction or breakage, and it is also possible to prevent a malfunction or breakage from occurring due to a reinforcing structure due to centering of the center of gravity, It can contribute to lowering the production cost of the product by minimizing the use. Further, in the case of the tilting chair 200 according to the present embodiment, it is minimized that the center of gravity of the tilting chair 200 is tilted backward even when the tilting chair 200 is tilted. Thus, even in the lower structure of the supporter 250 for supporting the chair, This increases the degree of freedom of design and brings many advantages in terms of design.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

100: tilting chair (one embodiment) 110: seat
120: Seatback 130: Armrest
140: substructure 150: supporter
160: cover part 141: lower bracket
142: sliding bracket 143: first gas cylinder
144: first link bar 145: second link bar
146: second gas cylinder
200: a tilting chair (another embodiment) 210: a seat
220: Seatback 230: Armrest
241: Lower bracket 242: Sliding bracket
243: first gas cylinder 244: first link bar
245: second link bar 246: second gas cylinder

Claims

A lower bracket 141 which is supported at a predetermined height by a supporter 150 and has a rail portion 141a extending in the form of an arc along an anteroposterior direction;
And is supported by the lower bracket 141 and is formed in an arc shape corresponding to the rail part 141a and fastened to the rail part 141a, A sliding bracket 142 having a skid portion 142a slidably moved in the front-rear direction; And
A first gas hinged to the front of the lower bracket 141 through one end of the first hinge pin H1 and hinged to the rear of the sliding bracket 142 through the second hinge pin H2, A tilting chair comprising a cylinder (143).

The method according to claim 1,
A link arm 142b extending from a rear end of the sliding bracket 142;
A first link bar 144 hinged to the rear end of the link arm 142b through the third hinge pin H3;
The other end of which is hinged to the other end of the first link bar 144 through the fourth hinge pin H4 and the other end of which is hinged to the rear surface of the seatback 120 through the fifth hinge pin H5 145); And
And a second gas cylinder (146) having one end hinged to the second hinge pin (H2) and the other end hinged to the fourth hinge pin (H2).

The method according to claim 1,
At least one of the rail part (141a) and the skid part (142a) is formed of acetal plastic at least partly.

The method of claim 2,
The seatback 120 is pivotally coupled to the base frame 111 by a sixth hinge pin H6 spaced upward from the fifth hinge pin H5 by a predetermined distance.

The method of claim 2,
Further comprising a cover portion (160) disposed at a rear lower side of the seatback (120) to shield the link arm (142b), the first and second link bars (144, 145) from the outside.

A seat 210 providing a seating space;
An armrest 230 disposed on the left and right sides of the seat 210;
And is rotatably coupled to one side of the armrest 230 through a sixth hinge axis H6 spaced upward from the seat 210 by a predetermined distance so that the sixth hinge axis H6 can be tilted about the sixth hinge axis H6 A seatback 220;
A first link bar 244 hinged to the lower side of the armrest 230 via a third hinge axis H3;
A first link bar 244 is hinged to the other end of the first link bar 244 through a fourth hinge axis H4 and the other end is hinged to the lower portion of the seatback 220 via a fifth hinge axis H5, A tilting chair comprising a bar (245).

The method of claim 6,
And the fifth hinge axis (H5) is disposed at a position lower than the sixth hinge axis (H6).

The method of claim 6,
And the other end is hinged to the fourth hinge axis H4 and the second hinge axis H2 and the fourth hinge axis H4 are hinged to each other at one end thereof under the armrest 230 through the second hinge axis H2, And a second gas cylinder (246) extending between the hinge axis (H4) and swinging the seatback (220) about the sixth hinge axis (H6).