KR0117300Y1 - Chairs with changeable inclination system - Google Patents

Abstract

In this case, when the user changes the seating position, for example, toward the front of the sheet, the front part of the sheet allows the wheel fixing frame to be lowered about the fixed axis, while the backrest of the sheet is ideally tilted forward with the sheet. In order to maintain the position, the position corresponding to the change in the seating posture, and the position-deformable chair that can prevent the occurrence of problems in the muscle system and joints, the backrest 101 is integrally formed The front portion of the sheet 100 can be formed to be flowable to the fixed shaft 505 of the wheel fixing frame 500, the rear portion of the sheet holding link 200 that can be flowably maintained as a tooth roller 303, 200; One end is fixed to the disks 506 and 506 formed on the fixed shaft 505, and the other end thereof is elastically connected to the teeth roller 303 of the sheet holding link 200 by rolling contact with the sheet. Connection bands 600 and 600 which allow the backrest 101 of the 100 to be elastically held about the fixed shaft 505;

It is formed to be in sliding contact with the bottom of the sheet 100, one side is fixed to the sheet bottom fixing bracket 103, the sheet holding link (200). It is formed in contact with the cloud 200, the transmission having a torsional restoring force in accordance with the movement of the sheet 100; consisting of, the sheet 100 and the backrest 101 is moved in conjunction with the It is intended to be recoverable.

Description

Position deformable chair

1 is a perspective view of a chair capable of changing the position of the present article.

2 is an exploded perspective view of a chair capable of changing the position of the present article.

Fig. 3A is a perspective view of the transmission in this article.

(B) is longitudinal sectional view of transmission in this article.

4 is a longitudinal cross-sectional view of the reversible chair in the present article.

* Explanation of symbols for main parts of the drawings

100: sheet 101: backrest

200: sheet retaining link 201: hinge hole

301: return spring 400: transmission

401: lowering fixed lever 402: bearing lever

403 teeth 404 tube

405: torsion spring 406: torsional member

407: torsion rod 408: tilt

500: wheel fixing frame 505: fixed shaft

506 disk 600: connection band

Depending on the seating position of the user in this paper, the seat and the backrest allow the user to maintain the most physiologically comfortable and balanced posture, avoiding the relaxation of the muscular system, the reduction of pressure on the vertebral disc, and the congestion of the legs and pelvis. The seat can be deformed, particularly when the user changes the seating position, for example, in front of the seat, allowing the front of the seat to be lowered about the fixed axis of the wheel fixing frame, The present invention relates to a chair that is capable of maintaining an ideal inclination forward with the sheet, thereby changing the position corresponding to the change in the seating position, thereby preventing problems such as causing problems in the muscular system and joints.

In the case of a work chair having functionality, the sheet is fixed by a fixing bracket to a height-adjustable strut fixed to a wheel fixing frame by fixing means such as welding, so that the sheet is spirally moved or lifted according to the user's sitting height. It is common that the height can be adjusted and used by means.

In addition, the backrest is elastically mounted with a spring so that the user can maintain the inclination backward from the seated position.

In the case of the chair having the conventional functionality as described above, the height of the seat is simply adjusted so that it can be used, and the backrest is limited so that the backrest can be moved only by the tension range of the spring about the seat. It only allows the user's seating height and range of use to bend the back.

Therefore, there is a problem in that the physiology of the human body can not prevent the relaxation of the muscular system and the compression applied to the vertebral disc and the congestion of the legs and the pelvis, and thus the user cannot take a comfortable posture.

In this proposal, the seat is mounted so that the pivot can move about the fixed shaft of the wheel fixing frame while being elastically lowered by a transmission, and the backrest is connected to the sheet by the sheet retaining link. By enabling the pivot movement, the backrest maintains the ideal inclination regardless of the positional change of the seat, so that the body's physiology can relax the muscular system, reduce the pressure applied to the spinal disc, and congestion of the legs and pelvis. It is an object of the present invention to provide a deformable chair that can be prevented.

The main subject of the present disclosure is a sheet holding link which can form a front portion of the sheet on which the backrest is integrally formed by a fixed shaft of the wheel fixing frame, and a rear portion of the sheet can be movable by a tooth roller; One end is fixed to the disk formed on the fixed shaft and the other side is elastically connected to the toothed roller of the sheet holding link in a rolling contact, so that the backrest of the sheet can be elastically maintained about the fixed shaft A band; A transmission which is formed to be in sliding contact with the bottom of the sheet, one side of which is fixed to a sheet bottom fixing bracket, and formed to be in contact with the sheet holding link, and having a torsion restoring force according to the movement of the sheet; It is made, characterized in that the sheet portion and the back portion is to move and restore in conjunction.

In addition, the present invention, the transmission is a fixed length of the tube and a certain length of the torsion spring is fixed to the lowering fixed lever with teeth formed at one end, the other side is inserted into the bearing lever formed with teeth and the torsion at the same time The end of the spring is fixed to the sheet bottom bracket, and the torsion fixing member fixed to the outer circumference of the tube and the bearing lever are connected by a plurality of torsion rods, and the lower fixing lever side is fixed around the sheet bottom bracket. It is characterized by having a.

In addition, the present invention is the circumferential teeth formed on one end of the sheet holding link is fixed to the fixed shaft, the teeth of the lower fixed lever and the bearing lever, and the other is in the back support bracket of the backrest It is characterized in that the pivot is fixed to the flowable teeth formed to be able to positionally deform the sheet and the backrest about the fixed shaft.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 and 2, the present invention includes a sheet 100 in which the backrest 101 is integrally formed; Sheet holding links (200) and (200) for holding the sheet (100) and the backrest (101) so as to be able to correlate with each other; Connection bands 600 and 600 formed on the sheet retaining links 200 and 200 so as to elastically maintain the backrest 101 at a predetermined inclination according to the positional deformation of the sheet 100; In addition, when the pressing force of the sheet 100 is applied to the bottom of the sheet 100 is applied, by the torsionally elastic restoring force, the transmission 400 having a function of lowering and restoring the sheet forward; have.

In the present proposal, a pillar 503 having a predetermined height is formed in the frame 502 on which the wheel 501 is mounted, and the fixed shaft mounting hole 504 is disposed above the pillar 503 as shown in FIG. 2. ), 504, the wheel fixing frame 500 is formed is to be fixed.

The fixed shaft vehicle holes 504 and 504 of the wheel fixing frame 500 have discs 506 and 506 of constant diameter on both sides of the fixed shaft 505 and on both sides of the fixed shaft 505. Fastening means (not shown) so that the hinge holes 201 and 201 at one end of the sheet holding links 200 and 200 are mounted at both ends of the fixed shaft 505 so as to be pivotally mounted. Fixed).

Further, as shown in FIGS. 2 and 4, the sheet retaining links 200 and 200 are formed in a substantially N-shape and are hinged holes 201 which are pivotally mounted to the fixed shaft 505. Circumferential teeth 202 and 202 are formed around the ends of the ends 201 and 202 of the lowering fixing lever 401 and the bearing lever 402 of the transmission 400 which will be described later. And the disks 506, 506 and return springs 301, 301 are elastically connected at the same time.

The return springs 301 and 301 are attached to the rectangular recesses 302 and 302 formed in the sheet holding link 200, as shown in FIG. ) To prevent exposure to outside, so as not to interfere with handling.

The other end of the sheet holding links 200 and 200 has holes 304 and 304 formed at the end thereof, and a back brackets 103 and 103 fixed to the rear portion of the backrest 101. Is coupled to the teeth rollers 303 and 303 so as to be elastically connected to the pivot movement portion toward the fixed shaft 505 and the connection band 407.

In addition, the connecting bands 600 and 600 have one end of each of the disks 506 and 506 fixed to the fixed shaft 505 by means of fastening means (not shown) as shown in FIGS. 2 and 4. The other side is wound on the toothed rollers 303 and 303 fixed to the backrest bracket 103 of the backrest 101 so that the teeth 604 and 604 are rolled in contact with each other so that the sheet holding link (200) and (200) are elastically connected to the guide rollers (606) and (606) formed at the bent portions of the sheet retaining links (200) and (200) by the tension springs (603).

Therefore, the connection bands 600 and 600 have the circumferential teeth 202 and 202 of the sheet retaining links 200 and 200 described above to lower the transmission 400 about the fixed shaft 505. It is possible to elastically transmit and restore the flow movement due to the rolling contact with the stationary lever 401 and the bearing lever 402 to a portion of the backrest 101 which is a rear portion of the sheet holding link 200 and 200 at a predetermined inclination. Has the function.

Next, the transmission 400 is fixed to the sheet bottom fixing bracket 103 while being formed to be in sliding contact with the bottom of the sheet 100 as shown in FIGS. 3A and 3B. The retaining links 200 and 200 are formed in rolling contact with each other, and have a torsional restoring force according to the movement of the sheet 100, so that the sheet 100 and the backrest 101 can be correlated. .

That is, the transmission 400, as shown in Figure 3 (a), one end of the tube 404 of a certain length is fixed to the lowering fixing lever 401, the teeth are formed, the other is also a tooth ( While the tube 404 is inserted into the bearing lever 402 having the 403 formed therein to be fluidly defective, the torsion spring 405 is fixed to one of the lower fixing levers 401 and the other bearing shaft is separately. It penetrates 402 and is fixed to the sheet bottom bracket 103.

The torsion fixing member 406 is fixed to the outer circumference of the tubular body 404, and the torsion fixing member 406 and the bearing lever 402 are connected and fixed by a plurality of torsion rods 407.

At this time, the inclined yaw 408 is formed on the fixing portion of the torsion fixing member 406 to which the torsion rod 407 is fixed, and the torsion rod 407 is fixed to the torsion rod by the lower fixing lever 401. When a torsional force is received about the torsion fixing member 406 as shown in FIG. 3B in the state fixed to the member 406, the torsion width of the torsion rod 407 can be compensated.

In addition, the lower fixing lever 401 is maintained in surface contact with the bottom surface of the sheet 100 and one sheet bottom bracket 103, and when the front side of the sheet 100 is pressed, the torsion of the transmission 400 is achieved. In the state where the spring 405 is fixed to the one sheet bottom bracket 103, the lower fixing lever 401 can be deformed by the repulsive force of the torsional force.

Referring to the operation and effects of the present invention configured as described above are as follows.

When the user views normal work in a normal posture, as shown in FIG. 4, the posture of the seating posture is at the center of the seat 100, while the back is supported by the backrest 101. It is sustainable.

In the above state, when the user moves the seating center toward the front of the sheet 100, the front of the sheet 100 is pressed. The bottom surface of the sheet 100 is curved, but the transmission 400 The pressing force is applied to the transmission 400 in a state of being in surface contact with the lowering fixing lever 401 and the bearing lever 402 of ().

Therefore, one side of the torsion spring 405 of the transmission 400 is fixed to the sheet bottom bracket 103, while the other side is fixed to the lowering fixing lever 401, and also torsion fixed to the tubular body 404. While the other side of the torsion rod 407, one of which is fixed to the fixing member 406, is fixed to the bearing lever 402, the pressing force of the sheet 100 lowers the fixing lever 401 of the transmission 400. And to the bearing lever 402 to some extent.

As a result, the teeth 403 and 403 of the lower fixing lever 401 and the bearing lever 402 are engaged with the peripheral teeth 202 and 202 formed in the sheet retaining links 200 and 200. While maintaining the state, when the torsion spring 405 and the torsion rod 407 reaches the elastic actuation point, the lower torsion spring 405 of the transmission 400 is fixed to the seat bottom bracket 103 in the lower fixing lever ( 401) is twisted to lower the sheet 100.

At this time, the descending center point in front of the sheet 100 is the lower fixing lever 401 of the transmission 400 and the teeth 403, () of the bearing lever 402 of the sheet holding link (200), (200) By engaging the circumferential teeth 202, 202, the sheet 100 is lowered forward with respect to the stationary shaft 505, which is the central axis of the sheet retaining links 200, 200.

In addition, the seat holding links 200 and 200 meshed with the teeth 403 and 403 of the lower fixing lever 401 and the bearing lever 402 of the transmission 400 are shown in FIG. As shown, as it moves counterclockwise about the fixed shaft 505, the abdominal spring 405 fixed to the disks 506 and 506 is retracted, and one side to the disks 506 and 506. The connection bands 600 and 600 to which the ends () are connected compensate for the force to move the sheet retaining links 200 and 200 and the backrest 101 in the direction of the arrow. The backrest 101 is moved forward of the sheet 100 in a correlation motion with the positional deformation of the 100.

In addition, when the sitting posture is removed from the normal posture or the sheet in the above state, the sheet 100 is returned to its original position by the elastic restoring force of the torsion spring 405 and the torsion rod 407 of the transmission 400. The backrest 101 also maintains its original state by the elastic restoring force of the return bands 301 and the tension springs 603 of the connection bands 600 and 600.

As described above, the subject of the present invention is to mount the sheet so as to be able to descend a certain distance elastically by the transmission while allowing the pivot movement about the fixed axis of the wheel fixing frame, and the backrest is connected to the sheet by the sheet holding link. By enabling the pivoting movement around the fixed axis, the backrest can maintain the ideal slope regardless of the positional deformation of the seat, so that the body's physiology can relax the muscular system and reduce the pressure applied to the spinal disc and the legs and It is possible to prevent congestion of the pelvis.

Claims (3)

The front part of the seat 100, in which the backrest 101 is integrally formed, may be formed to be movable to the fixed shaft 505 of the wheel fixing frame 500, and the rear part may be held to be flowable by the teeth roller 303. Sheet holding links (200, 200); One end is fixed to the disks 506 and 506 formed on the fixed shaft 505, and the other end thereof is elastically connected to the teeth roller 303 of the sheet holding link 200 in a rolling contact with the sheet. Connection bands 600 and 600 which allow the backrest 101 of the 100 to be elastically held about the fixed shaft 505; While being formed in sliding contact with the bottom of the sheet 100, one side is fixed to the sheet bottom fixing bracket 103, and is formed to be in contact with the sheet holding links 200 and 200 so as to be in contact with the sheet. Transmission 400 having a torsional restoring force according to the movement of the (100); consisting of, the seat (100) and the backrest 101, the position-deformable chair, characterized in that the movement and restoring to be linked. According to claim 1, The transmission 400, the length of the tubular body 404 and the predetermined length of the torsion spring 405, respectively, one end is fixed to the lowering fixed lever 401 having teeth formed, the other side The tube 404 is inserted into the bearing lever 402 in which silver teeth 403 are formed, and at the same time, the end of the torsion spring 405 is fixed to the sheet bottom bracket 103 and fixed to the outer circumference of the tube 404. The torsion fixing member 406 and the singer bearing lever 402 are connected to the plurality of torsion rods 407, so that the lower fixing lever 401 side of the seat bottom bracket 103 has the torsion restoring force. Position deformable chair, characterized in that. According to claim 1 or claim 2, The sheet holding links (200, 200), circumferential teeth (202, 202) are formed at one end portion fixed to the fixed shaft (505), Teeth of the lower fixing lever 401 and the bearing lever 402 to be engaged with the teeth 403 and 403, and the other side of the tooth roller 303 is formed to be movable to the back bracket 103 of the backrest 101. And pivotally secured to position the seat (100) and the backrest (101) about the fixed shaft (505).