WO2019045184A1

WO2019045184A1 - Standing assist chair and wheelchair

Info

Publication number: WO2019045184A1
Application number: PCT/KR2017/013805
Authority: WO
Inventors: 차영철
Original assignee: 주식회사 컴포트
Priority date: 2017-08-31
Filing date: 2017-11-29
Publication date: 2019-03-07
Also published as: KR20190024417A; JP2020531229A; JP6923982B2

Abstract

The present invention relates to a standing assist chair capable of forwardly rotating a seat by a simple operation and easily adjusting a standing angle of the seat without external power. The standing assist chair, according to the present invention, enables a seat to be stood and inclined forward by movements of a link means and a gas cylinder when a seat control lever provided in an armrest part is simply operated, thereby helping stand a user sitting on the seat. Therefore, the invention can easily assist standing of a person having weak physical strengths, such as an old or weak person, by a simple operation, and a rotational angle of the seat can be adjusted so as to assist standing in accordance with weight and body type of the old or weak person. In addition, the standing assist chair of the present invention can assist standing and sitting of a user according to the user's weight and body type by easily adjusting a standing angle of the seat. In addition, since the link means, the gas cylinder, and the standing angle adjusting device can be configured as a single seat tilting module, the seat tilting module can be applied to various types of chairs. Specifically, the seat tilting module can be detached from the side frames for constituting side parts of a wheelchair by using a supporter.

Description

Standing up chair and wheelchair

The present invention relates to an upright supporting chair which can help a user sitting on a seat to stand up, and can easily rotate the seat upwardly and forwardly by simple operation, and can easily adjust the lifting and rotating force of the seat without external power A standing chair and a wheelchair.

Generally, a chair is a furniture in which a person can sit, and is composed of a backrest, a seat, an armrest portion, and a leg portion supporting them.

In modern society, chairs are used in situations such as work, leisure, and relaxation. Therefore, elderly or musculoskeletal sufferers who are able to live independently have more time to live in their chairs.

However, elderly people with weak joints or musculoskeletal diseases are hard to get up in the chair alone because of their weak muscles, and fall accidents are caused by erroneous central movement at the time of standing. To solve these problems, wheelchair and standing up chair have recently been developed for the elderly.

Korean Patent Laid-Open Publication No. 2011-0074342 discloses that when the end portion of the armrest portion is pressed by using the load of the upper body, the seat positioned parallel to the armrest portion is lifted up and simultaneously rotated so that the hip is lifted and the center of gravity of the upper body A functional chair for assisting an upright movement while moving forward is disclosed.

However, according to the related art, since a user has to operate with a force of a predetermined size or more for an upright assisting operation, it is difficult for a senior citizen who has weak muscular strength to use it spontaneously. In addition, since the stand-up assistance operation is continuously performed according to the mechanically set rotation angle and stroke, it is difficult to assisting the user to stand in accordance with the body weight and body shape of the user, and an accident such as a fall may occur due to the sudden movement of the center of gravity There is a problem.

Korean Patent Laid-Open Publication No. 2011-002969 discloses an upright auxiliary chair capable of standing up and reclining when the electric driver is operated, the movement of the seat back and the back plate being guided by the seat guide.

However, according to the related art, in addition to the electric motor, an external power or a battery for driving the motor must be provided since the power transmitting portion such as a pinion and a lever for converting the power of the motor into the linear reciprocating motion is employed in addition to the electric motor , Thereby complicating the structure and increasing the production cost.

In addition, Korean Utility Model Publication No. 2013-0007300 discloses a configuration in which a leg rest, which is fixed to a support frame, is pulled out from a lower side of a seat, and a leg rest is separately rotated around a rotation axis at a predetermined angle An office chair which is fixed to a support frame is disclosed.

However, according to the related art, there is a problem that it is inconvenient for the elderly to use because it is difficult for the elderly who have weak muscular strength to directly pull out the leg rest from the seat back and to return the leg to the horizon in the case of the elderly who are somewhat less flexible.

Korean Patent Laid-Open Publication No. 2014-0060447 discloses a chair comprising a head rest portion, a backrest portion, a hip rest portion, a leg rest portion, and a foot rest portion in a continuous form, There is disclosed a chair which can be composed of a chair or a bed by adjusting the angle of the seat portion.

However, according to the related art, since the angle of the leg rest portion is automatically adjusted by the chair tilt adjusting switch portion, an external power or battery for driving the leg rest portion separately must be provided, There is a problem that the cost is increased.

An object of the present invention is to provide an upright supporting chair and a wheel chair which can rotate the seat forward by a simple operation.

Another object of the present invention is to provide an upright supporting chair and a wheelchair which can easily adjust the lifting and rotating force of the seat without external power.

Still another object of the present invention is to provide an upright auxiliary chair and a wheelchair which make detachable means for providing a lift and a turning force to the seat.

Another object of the present invention is to provide an upright auxiliary chair and a wheelchair which can easily move and fix the leg-rest to a desired angle without external power by using a simple operation and a user's leg weight.

According to an aspect of the present invention, an upright supporting chair comprises: a seat on which a user can sit; a pair of armrests provided on both sides of the seat and capable of raising a user's arm; At least one gas cylinder which provides a predetermined power to the link means and a seat control lever which is connected to the gas cylinder and which controls the operation of the gas cylinder .

The standing up chair and the wheel chair according to the present invention are configured such that the seat is lifted up and tilted forward by the movement of the link means and the gas cylinder by the operation of the seat control lever to help the user sitting on the seat stand up .

Particularly, by employing a four-bar link in a seat tilting module that assists standing of the seat, a stable standing and seating assist function can be provided to the user. Specifically, when the user sitting on the seat stands, the seat can be driven in the same direction as the user's standing direction. Further, when the user sits on the seat in a standing state, the seat can be driven in the same direction as the seating direction of the user. Therefore, even a person with weak muscles such as the elderly can easily provide stable standing and sitting assist functions by a simple operation.

Further, the standing angle of the gas cylinder for adjusting the lifting force and the rotational force of the seat can be adjusted by using the standing angle adjusting device. Therefore, there is an advantage that it can be assisted to stand up to the weight and the body shape of the user sitting on the seat.

Further, since the rising angle of the gas cylinder can be easily manipulated without external power, there is an advantage that the design is simplified and the manufacturing cost is reduced.

In addition, since the seat tilting module can be easily separated and mounted on the standing up chair, maintenance of the seat tilting module is simple.

In addition, a person with weak muscles such as an elderly person can easily adjust the angle of the leg support by the simple operation and the weight of the leg, so that the ease of use can be increased and the leg rest can be adjusted to a desired angle. It is possible to provide a leg support function, and it is possible to construct without any external power, thereby reducing the production cost.

1 is a perspective view showing a standing up chair according to a first embodiment of the present invention.

2 to 4 are views showing a part of a leg-rest tilting module and a leg-rest control lever according to the first embodiment.

5A and 5B are side cross-sectional views illustrating an operating state of the leg-rest tilting module according to the first embodiment.

6 is a schematic view showing the installation structure of the body weight measuring means according to the first embodiment.

FIG. 7 is a perspective view showing the standing up chair according to the second embodiment of the present invention. FIG.

8 is a perspective view showing a seat tilting module applied to the standing up chair in the second embodiment.

Figs. 9A and 9B are views showing the operating state of the seat tilting module in the operation of the standing up chair according to the second embodiment.

10 is a schematic view showing a seat control lever applied to the standing up chair in the second embodiment.

11 is a schematic view showing a mounting structure of a weight measuring sensor applied to a standing up chair in the second embodiment.

12 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair in the second embodiment.

13 is a graph showing the stroke of the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair according to the second embodiment.

Fig. 14 is a perspective view showing a standing up chair according to a third embodiment of the present invention.

15 is a perspective view showing a seat tilting module applied to the standing up chair according to the third embodiment.

16 and 17 are views showing the operating state of the seat tilting module in the operation of the standing up chair according to the third embodiment.

18 is a side view of the seat tilting module to which the standing angle adjusting device for adjusting the standing angle of the gas cylinder according to the third embodiment is applied.

19 is a partially enlarged view of the seat tilting module showing the standing angle adjusting device according to the third embodiment.

20 is a graph showing the vertical force of the gas cylinder according to the stroke change of the seat tilting module according to the third embodiment.

FIG. 21 is an enlarged view of a part of an upright auxiliary chair for explaining a coupling structure of a seat tilting module and an upright auxiliary chair according to a third embodiment. FIG.

22 is a partial side view of a standing upright chair for explaining a state in which the seat tilting module according to the third embodiment is mounted on the standing up chair.

23 is a view showing a state in which the pressing portion of the locking device is pressed so that the seat-tilting module is separated from the standing-up auxiliary chair in Fig.

24 is a view showing a part of the standing up chair for explaining a plurality of levers provided in the standing up chair according to the third embodiment;

25 is a partial enlarged view of an upright auxiliary chair showing a seat control lever according to the third embodiment.

26 is a schematic view showing a height adjusting lever applied to the standing up chair according to the third embodiment.

Fig. 27 is a partially enlarged view of the standing upright chair viewed from the front according to the fourth embodiment of the present invention. Fig.

28 is a partially enlarged view of an standing upright chair viewed from the side according to the fourth embodiment.

29 is a perspective view showing a plurality of frames constituting a chair main body according to the fourth embodiment.

30 is a perspective view of the seat tilting module according to the fourth embodiment.

31 is a partially enlarged view showing the lower locking device of the seat tilting module according to the fourth embodiment.

FIG. 32 is a partially enlarged view showing the lower lock device unlocked in FIG. 31; FIG.

33 to 35 are partially enlarged views showing a process in which the seat tilting module is mounted on the standing up chair.

36 is a partially enlarged view showing a process in which the seat tilting module is separated from the stand-up assistance chair.

37 is a perspective view of an upright supporting chair according to a fifth embodiment of the present invention.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. It should be understood, however, that the scope of the inventive concept of the present embodiment can be determined from the matters disclosed in the present embodiment, and the spirit of the present invention possessed by the present embodiment is not limited to the embodiments in which addition, Variations.

&Lt; Embodiment 1 >

1, the standing up chair comprises a base 110, a seat 120, a backrest 130, a pair of

armrests

140 and 150, a legrest 160, A leg-rest tilting module 170, a seat control lever 180, and a leg-rest control lever 190.

Herein, the stand-up assistant chair is an article capable of assisting the operation when the seating object stands on all kinds of chairs capable of being seated such as a wheelchair for a disabled person, a sofa, and the like.

The base 110 is provided to fix the entire standing upright chair on the floor, and it can stably support the standing operation of the weak musculoskeletal user such as the elderly, and prevent the base 110 from falling down with the chair.

The seat 120 is configured as a seat for the user to sit comfortably by providing a predetermined cushion. In addition, the seat 120 is horizontally mounted on the base 110, and a seat tilting module (not shown) having a link structure using a gas spring is provided, so that the seat 120 is tilted forward And the rotation angle of the seat control lever 180 is adjusted by the seat control lever 180.

The seat tilting module is mounted on the upper side of the base 110 and is configured to mount the seat 120 and the backrest 130 and the leg- The present invention can be applied to a conventional chair structure to easily realize an upright support chair that can rotate the seat 120 forward, and can be configured in various forms.

The backrest 130 is provided so that a user can lean against the backrest. The backrest 130 is mounted on the base 110 in a vertical or rearward inclined state and is fixed to the base 110 or a separate seat tilting module (not shown).

The

armrests

140 and 150 are provided to allow the user's hands and arms to be placed on the seat 120. The

armrests

140 and 150 are composed of a right armrest portion 140 and a left armrest portion 150 on both sides of the seat 120, ) Or a separate seat tilting module (not shown).

A handle lever (not shown) of the seat control lever 180 is exposed on a front surface of the right armrest portion 140. The legrestrest control lever The handle lever 191 (FIG. 4) of the handle 190 is exposed, but is not limited thereto.

In addition, the

armrests

140 and 150 may have a predetermined space and may be configured to be able to open and close a space by a separate cover, and a medication time alarm setting button (not shown) may be provided on a separate cover .

Of course, the inside of the

armrests

140 and 150 may include shelves that can be easily taken out and opened, or may store health-related items, but are not limited thereto.

The leg-rest 160 is provided to allow a user to lift the leg, and similarly, a predetermined cushion is provided so as to be easily raised. In addition, the leg-rest 160 is installed so as to be vertically downward in front of the seat 120. The leg-rest 160 is installed to be able to rotate horizontally as the leg-rest tilting module 170 is mounted, Its rotational angle is adjusted by the leg-rest control lever 190 to be described.

Since the leg-rest tilting module 170 is mounted on the lower side of the seat 120 and the leg-rest 160 so as to connect the seat 120 and the leg-rest 160 to each other, It is possible to easily rotate the leg-rest 160 to a desired angle. The detailed configuration will be described below.

The seat control lever 180 is provided to adjust the rotation angle of the seat tilting module (not shown). The seat control lever 180 is installed to expose a part of a handle lever (not shown) on the right arm rest 140, (Not shown), and the detailed configuration may be variously implemented, and thus will not be described here.

The leg-rest control lever 190 is provided to adjust the rotation angle of the leg-rest 160. Likewise, the leg-rest tilting module 170 is installed such that a part of the lever lever is exposed to the left leg- And the detailed configuration will be described later in detail.

FIGS. 2 to 4 are views showing a part of a leg-rest tilting module and leg-rest control lever according to the first embodiment.

2 to 4, the leg-rest tilting module 170 includes a first fixing frame 121 bolted to the lower side of the seat 120 and a second fixing frame 121 bolted to the lower side of the leg- A pair of support springs 171 for supporting the leg support 160 in the horizontal direction like the seat 120 and a pair of support springs 171 The brake means includes a rotary shaft 172, a ratchet 173, a pawl 174, a moving plate 175 and a fixed plate 176, And a compression spring 177.

The support springs 171 are installed to provide an elastic force to support the leg supports 160 in the horizontal direction like the seat 120. The support springs 171 are spaced at a predetermined interval in the horizontal direction below the leg supports 160 And both ends thereof are fixed to the first and second fixed

frames

121 and 161.

A plurality of holes 121h may be formed in the side surface of the first fixing frame 121 at predetermined intervals in the up and down direction and a hole may be formed in the side surface of the second fixing frames 161 Wherein one end of the support springs 171 is fixed to one of the holes 121h of the first fixing frame by a bolt and the other end of the support springs 171 is fixed to the second end Fixed in the holes 161h of the fixed frames, or may be fixed as they are structurally formed at the time of assembly, and are not limited.

The rotation shaft 172 is installed such that both ends of the rotation shaft 172 are engaged with the support springs 171 in the axial direction to rotate together with the support springs 171. The lower portion of the rotation shaft 172 is rotated by the first and second fixing frames 121 and 161 And is rotatably installed as it is supported.

The ratchet 173 is installed around the center of the rotation shaft 172. The rectilinear portion 172L and the ratchet 173L have a predetermined linear shape in planar contact with the outer peripheral surface of the rotary shaft 172 and the inner peripheral surface of the ratchet 173, The rotation shaft 172 and the ratchet 173 are installed to rotate with each other. Of course, the ratchet 173 is formed so as to engage with the pawl 174, which will be described later, with a gear tooth formed on the outer circumferential surface thereof. Accordingly, when the ratchet 173 is engaged with the pawl 174 described below, the rotation shaft 172 is stopped.

The other end of the pawl 174 is connected to the hinge 174a so that the pawl 174 can be selectively engaged with the gear teeth of the ratchet 173. The other end of the pawl 174 is connected to the

hinge

174a, 174 can be moved to the ratchet 173 side. Accordingly, when the pawl 174 rotates a predetermined angle about the hinge 174a, the teeth of the pawl 174 selectively engage with the gear teeth of the ratchet 173 to fix the rotation shaft 172 have.

The moving plate 175 is movably installed along with the other end of the pawl 174 while being connected to the other side of the pawl 174 while the holding plate 176 is movable along the moving plate 175 And is fixed at a spaced position. In an embodiment, the fastening plate 176 may be configured to have a hinge 174a of the pawl 174, or may be configured to have a rectangular shaped casing shape such that the compression spring 177 and the actuation shaft 194, , But is not limited to.

Both ends of the compression spring 177 are supported between the moving plate 175 and the fixing plate 176. As the compression spring 177 is supported by the fixing plate 176, the elastic force of the compression spring 177 Thereby providing a force to push the moving plate 175 and the pawl 174 toward the ratchet 173 side.

Meanwhile, the leg-rest control lever 190 is configured to mechanically transmit the movement of the user's hand to the moving plate 175 to control the operation of the leg-rest tilting module 170, A wire 192, an operation lever 193, and an operation shaft 194. The operation lever 193 is connected to the wire 192,

The handle lever 191 is provided in one of the armrests 140 and 150 (shown in FIG. 1), and is configured in such a form that the user can pull it by hand.

The wire 192 is provided to transmit the movement of the handle lever 191, and is preferably built so as not to be exposed.

The operation lever 193 is configured as a kind of levers for transmitting the movement of the wire 192 to an operation axis 194 to be described later. The operation lever 193 has one end connected to the wire 192, And is horizontally supported on the outside of the fixing plate 176 while being hinged to the operation shaft 194 to be described. Of course, the wire 192 and the operation shaft 194, which will be described later, are installed in opposite directions with respect to the operation lever 193.

The operating shaft 194 connects the moving plate 175 and the operating lever 193 and is installed to pass through the compression spring 177 and the fixed plate 176. In the embodiment, it is preferable that the operation lever 193 and the operation shaft 194 are hinged so as to be able to transmit motion even if they are fixed in a state where they cross each other on the installation structure.

The other end of the operating lever 193 may be provided with a hole 193h which can be hinged to the operating shaft 194. The position of the hole 193h is determined by a force The operation lever 193 and the operation shaft 194 intersect with each other.

When the user pulls the handle lever to adjust the angle of the leg-rest 160, the operation lever 193 and the operation shaft 194 are pulled by the wire (not shown) as shown in Fig. 5A, When the teeth of the pawl 174 are released from the gear teeth of the ratchet 173 as the spring 177 is compressed and one end of the moving plate 175 and the pawl 174 are pulled, The restraint is released, and the leg-rest 160 is supported on the seat 120 only by the support springs 171. [

The weight of the leg is larger than the elastic force of the support springs 171 when the user lifts the leg on the leg support 160. Accordingly, when the leg support 160 rotates about the rotation shaft 172, And the angle of the leg-rest 160 can be adjusted.

Of course, when the user lowers the legs on the leg-rest 160, the angle of the leg-rest 160 can be adjusted to be level with the seat 120 by the elastic force of the springs 161.

5B, the operation lever 193 and the operation shaft 194 are connected to each other by a wire (not shown) when the user pulls the handle lever to maintain the angle of the leg- The teeth of the pawl 174 are engaged with the teeth of the ratchet 173 so that the teeth of the pawl 174 are engaged with the teeth of the ratchet 173, The rotation shaft 172 is restrained by engagement with the gear teeth and the leg support 160 is mechanically supported by the seat 120 by the ratchet 173 and the pawl 174. [

Therefore, even if the user puts the leg on the leg-rest 160, the angle of the leg-rest 160 can be maintained as it is, and the rest can be rested comfortably.

The weight measuring means applied to the present invention can measure the weight accurately when the user sits on the seat 120 (shown in Fig. 1) and legs on the leg-rest 160 (shown in Fig. 1) A top plate 211 mounted on a lower surface of a seat 120 (see FIG. 1) on which the user sits; a middle plate 212 fixed by a separate member at a position spaced apart below the top plate 211; And a weight measuring sensor 213 installed to connect between the upper plate 211 and the middle plate 212.

In the present embodiment, the upper plate 211 and the middle plate 212 may be included in a seat tilting module (not shown) provided to rotate the seat 120 (shown in FIG. 1) Or more.

It is preferable that the weight measurement sensor 213 is installed at each of at least four places in order to reduce the measurement error. The weight measurement sensors 213 may be installed at four corners of the middle plate 212, (212H).

The weight measuring sensor 213 may be constituted by a plate-shaped piezoelectric element. The weight measuring sensor 213 includes an outer circumferential portion 213a bolted to the hole 212H of the middle plate 212, An inner circumferential portion 213b to be bolted to the upper plate 211 in a possible form and a measuring portion 213c to generate a voltage change according to the degree of bending of the inner circumferential portion 213b with respect to the outer circumferential portion 213a , But is not limited to.

Of course, the voltage changes measured by each weight measuring sensor 213 can be averaged, and then converted to weight accurately.

Accordingly, when the user puts the leg on the leg-rest 160 in the state where the user is sitting on the seat 120 (shown in Fig. 1), the weight of the user is applied to the seat 120 (shown in Fig. The inner circumferential portion 213b is bent downward with respect to the outer circumferential portion 213a and the inner circumferential portion 213b is bent with respect to the outer circumferential portion 213a as the upper plate 211 is moved downward The voltage changes according to the degree of the voltage, and the weight can be accurately measured according to the voltage change.

&Lt; Embodiment 2 >

The second embodiment will be described below.

The present embodiment differs from the first embodiment in the configuration in which the preferred seat tilting module is implemented in detail.

In addition, the description of the same configuration as that of the first embodiment is omitted.

7 is a perspective view showing the standing up chair according to the second embodiment.

The standing up chair according to the second embodiment of the present invention includes a base 310, a seat 320, a backrest 330, a pair of

armrests

340 and 350, A leg support 360, a seat tilting module 370, a seat control lever 380, and a leg rest control lever 390. [

The seat tilting module 370 of this embodiment includes a rotary plate 371, a fixing plate 372, a four-bar link 373, and a gas cylinder 374 as shown in Fig.

Of course, in order to stably drive the seat tilting module 370, a pair of the four-link 373 and the gas cylinder 374 are provided so as to connect both sides of the rotating plate 371 and the fixed plate 372 However, only one of the four-bar link 373 and the gas cylinder 374 is shown in the drawing.

The first link 431 of the quadrupole link 373 is fixed on both sides of the front side of the rotation plate 371 and the first link 431 Are rotatable forward as they are rotated forward.

In the embodiment, the rotary plate 371 is composed of an upper plate 411 and a middle plate 412 spaced apart from the lower plate 411 in order to mount a weight measuring sensor 413 (shown in FIG. 11) to be described later. The upper plate 411 is fixed to the lower surface of the seat 320 and the middle plate 412 is spaced below the upper plate 411 by the weight measuring sensors 413 Fixed, but not limited to.

The fixing plate 372 has a plate shape fixed to the upper side of the base 310 (shown in FIG. 7). The second link 432 of the four-bar link 373, which will be described later, And remains fixed like the second link 432.

The four-link link 373 includes a first link 431 which is a kind of rotating link, a second link 432 which is a kind of fixed link, and a third link 432 which is hinged between the first and

second links

431 and 432. And 4

links

433 and 434, respectively.

The first link 431 is fixed to the front side of the middle plate 711 of the rotary plate 371 while the second link 432 is fixed to the rear side of the fixing plate 372, The first and

second links

431 and 432 may be vertically downwardly disposed with respect to the rotary plate 371 and may have a plate shape having a U-shaped cross section .

The third link 433 is hinged to the center of the first link 431 and the upper portion of the second link 432 and the fourth link 434 is hinged to the center of the first link 431, And the third and

fourth links

433 and 434 are hinged to the lower portion and the lower portion of the second link 432, respectively.

At this time, the first and

second links

431 and 432 may be provided with a plurality of

holes

431h and 432h at predetermined intervals in order to easily change the hinge connection position of the gas cylinder 374, According to the simulation result, the installation angle of the gas cylinder 374 can be appropriately adjusted according to the body weight and the body shape of the user.

In addition, a fixing frame 432a for fixing the armrests 340 and 350 (shown in FIG. 7) may be provided on one side of the second link 432. In addition, a backrest part 330 and the like Various frames for fixing may be additionally provided, but are not limited thereto.

The gas cylinder 374 is hinged to connect between the upper portion of the first link 431 and the lower portion of the second link 432 as a cylinder to which a predetermined gas pressure can be applied in an internal compression space , And provides a driving force to the four-bar link 373. Of course, the gas cylinder 374 is connected to a seat control lever 380 (shown in FIG. 7), which will be described later.

Accordingly, when the seat control lever 380 (shown in Fig. 7) to be described below is pulled, the size of the compression space inside the gas cylinder 374 is varied by the predetermined gas pressure, The total length of the gas cylinder 374 is increased as the compression space is increased. However, if the force externally applied is greater than the gas pressure, the length of the entire gas cylinder 374 decreases as the compression space decreases do.

On the other hand, releasing the seat control lever 380 (shown in FIG. 7), which will be described below, keeps the entire length of the gas cylinder 374 by fixing the size of the compression space inside the gas cylinder 374.

Of course, the pressure of the gas cylinder 374 is preferably used to match the body weight and body shape of the user. However, even if the gas cylinder 374 having the same pressure is used, the installation angle and the stroke of the gas cylinder 374 are adjusted It is possible to provide an erecting assistant operation suited to the body weight and the body shape of the user.

9A, the rotary plate 371 and the fixed plate 372 are maintained in a horizontal state, and the gas cylinder 374 is moved to a predetermined installation angle a (a) with respect to the rotary plate 371 ).

When the user pulls the seat control lever 380 (shown in FIG. 7) and slightly grasps the buttocks, the entire length of the gas cylinder 374 is increased to move from FIG. 9A to FIG. 9B, The first, third, and

fourth links

431, 433, and 434 are rotated about respective hinges in a state where the first link 432 is fixed, and the rotation plate 371 connected to the first link 431 is rotated And is inclined toward the front while moving up the buttocks of the user.

On the other hand, when the user pulls the seat control lever 380 (shown in Fig. 7) and weights the seat with the buttocks, the entire length of the gas cylinder 374 is reduced and moves from Fig. 9b to Fig. 9a , The rotary plate 371 is moved downward and returned to its original state in a horizontal state, and a stable seat assist operation is performed in a state where the user's buttocks are seated on the seat.

Of course, when the user releases the pulling of the seat control lever 380 (shown in FIG. 7) to be described later in the standing or sitting operation, the length of the gas cylinder 374 is maintained as it is due to the characteristics of the gas cylinder 374 The user can stop at a desired position during standing or sitting operation.

The seat control lever 380 of the present invention includes a handle lever 381, a main wire 382, a distribution lever 383 and a pair of

distribution wires

384 and 385 as shown in Fig. do.

The handle lever 381 is provided in one of the armrests 340 and 350 (shown in FIG. 7), and is configured in a form that can be pulled by the user's hand.

The main wire 382 is provided to transmit the movement of the handle lever 381, and is preferably built so as not to be exposed.

The dispensing lever 383 is provided to be movable by the main wire 382. The dispensing lever 383 is hinged to the center portion and can be fixed to the rear of the fixing plate 372 (see FIG. 8), but is not limited thereto.

The pair of

distribution wires

384 and 385 are installed to connect between the levers of the

gas cylinders

374 and 375 on both sides of the hinge of the distribution lever 383.

Therefore, when the user pulls the handle lever 381, the movement of the handle lever 381 is transmitted to the distribution lever 383 by the main wire 382, and the hinge of the distribution lever 383 is moved to the center The movement of the distribution lever 383 is transmitted to the levers of the

gas cylinders

374 and 375 by the

distribution wires

384 and 385 so that the

gas cylinders

374 and 375 And the total length of the

gas cylinders

374 and 375 can be varied according to the magnitude of the externally provided force to assist the standing or seating operation.

On the other hand, when the user releases the pulling state of the handle lever 381, the distribution lever 383 is returned to its original state by the main wire 382, and the distribution wires 383, When the levers of the

cylinders

374 and 375 return to their original positions, the total length of the

gas cylinders

374 and 375 can also be fixed as the internal compression space size of the

gas cylinders

374 and 375 is fixed The standing or sitting operation can be stopped.

As shown in FIG. 11, the weight measuring sensor according to the present invention is provided to accurately measure the body weight when the user is seated. The weight measuring sensor according to the present invention includes a rotating plate 371 (see FIG. 7) 8), as shown in Fig.

8, the upper plate 411 and the middle plate 412 are separated from each other by the weight measuring sensor 413, and the upper plate 411 and the middle plate 412 Are connected to each other.

The weight measuring sensors 413 are preferably installed at at least four positions in order to reduce measurement errors. The weight measuring sensors 413 are installed at four corners of the middle plate 412, respectively. Holes 412H are provided.

The weight measuring sensor 413 may be constituted by a plate-shaped piezoelectric element. The weight measuring sensor 413 includes an outer circumferential portion 413a bolted to the periphery of the hole 412H of the middle plate 412, An inner peripheral portion 413b to be bolted to the upper plate 411 in a possible form and a measuring portion 413c to generate a voltage change depending on the degree of bending of the inner peripheral portion 413b with respect to the outer peripheral portion 413a , But is not limited to.

Of course, the voltage changes measured by each weight measuring sensor 413 can be averaged, and then converted to weight accurately.

7) and the upper plate 411, the user's body weight acts on both the seat 320 (shown in Fig. 7) and the upper plate 411 The inner circumferential portion 413b is bent downward with respect to the outer circumferential portion 413a as a result of the downward movement of the inner circumferential portion 413b and the inner circumferential portion 413b is bent toward the outer circumferential portion 413a, The body weight can be accurately measured according to the voltage change.

Fig. 12 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair in the second embodiment, Fig. 13 is a graph showing the stress acting on the gas cylinder in the standing- The stroke of the gas cylinder according to the installation angle of the gas cylinder.

The installation angle (a) of the gas cylinder applied to the standing up chair of the present invention was varied in 10 ° increments in the range of 10 ° to 90 ° downward with respect to the horizontal plane, and an external load of 60 kg was applied, In which the rotation angle of the rotary plate applied to the horizontal plane is upwardly moved to the 25 ° target angle for 5 seconds with respect to the horizontal plane.

As a result of the above simulation, the stress change acting on the gas cylinder appears as shown in Fig. 12, in which the stress acting on the gas cylinder gradually decreases in the rising section in which the user stands, and the stress acting on the gas cylinder in the fully- The stress is reduced to the minimum, and the stress acting on the gas cylinder gradually increases in the descending section where the user is seated.

However, as the installation angle (a) of the gas cylinder increases from 10 ° to 60 °, the stress acting on the gas cylinder during the rising section and the falling section is entirely reduced. On the other hand, when the installation angle of the gas cylinder is increased to 70 °, The stress acting on the gas cylinder becomes larger at the end of the initial or falling section of the rising section than when the mounting angle is 60 °. Further, as the installation angle of the gas cylinder is increased from 70 ° to 90 °, the stress acting on the gas cylinder increases over the rising section and the falling section as a whole.

Therefore, considering the stress acting on the gas cylinder, it is preferable that the installation angle of the gas cylinder is determined within the range of 20 to 60 degrees.

13, the stroke of the gas cylinder is gradually increased in the rising section where the user stands, and the stroke of the gas cylinder is maximized And the stroke of the gas cylinder gradually decreases in the descending section where the user is seated

However, when the installation angle (a) of the gas cylinder is increased from 10 ° to 70 °, the maximum stroke of the gas cylinder gradually increases to 45 mm or more. On the other hand, when the installation angle (a) The stroke is reduced to 70 mm.

Therefore, in order to freely design the installation angle a of the gas cylinder within a range of 10 ° to 90 °, it is preferable that the stroke of the gas cylinder is determined to be 45 mm or more.

&Lt; Third Embodiment >

In this embodiment, there is a difference between the structure for adjusting the standing angle of the seat tilting module and the structure for detachably mounting the standing tilting chair in comparison with the previous embodiments.

14 is a perspective view showing the standing up chair according to the third embodiment.

Referring to FIG. 14, the standing up chair 5 according to the third embodiment of the present invention may include a chair body 50 formed of a plurality of frames. A plurality of

wheels

610 and 620 may be mounted on the chair body 50. Therefore, the chair main body 50 can be moved by the user's operation by the plurality of

wheels

610, 620. The details of the plurality of frames will be described later.

The chair body 50 may include a seat 530 provided for the user to sit on. The seat 530 is configured to provide a predetermined cushion as a seat for a user to sit comfortably. In addition, the seat 530 may be positioned on a seat tilting module 800, which will be described below. More details about the seat tilting module 800 will be described later.

The chair body 50 further includes a backrest portion 540 on which a user can lean. The backrest portion 540 is configured to provide a predetermined cushion and to lean comfortably. Further, the backrest portion 540 is mounted in a state of being vertically or rearwardly inclined with respect to the seat 530. To this end, the backrest 540 may be disposed behind the seat tilting module 800 in the plurality of frames.

The chair body 50 may further include a footrest 580 for supporting a foot of a user.

The chair body 50 is provided in a module form and may further include a seat tilting module 800 on which the seat 530 is mounted. The seat tilting module 800 may provide a lift force and a rotational force to the seat 530. For example, the horizontal seat 530 may be tilted forward while being lifted up by the seat tilting module 800. In other words, the horizontal seat 530 can be moved upwardly toward the front of the chair body 50 by the seat tilting module 800. At this time, the seat 530 may be tilted forward while being upwardly moved forward by the seat tilting module 800. Therefore, since the direction in which the user who is seated on the seat 530 stands and the direction in which the seat 800 is tilted while moving, the user can stand easily.

Conversely, in a state in which the seat 530 is moved forward, the seat tilting module 800 can always move the seat 530 downward toward the rear of the chair body 50. The seat 530 can be returned to the horizontal state in the process of moving downward toward the rear side. Since the direction in which the user sits on the seat 530 and the direction in which the seat 530 is moved backward by the seat tilting module 800 are coincident with each other on the seat 530, . &Lt; / RTI >

The seat tilting module 800 may include a seat control lever 730 for adjusting the forward and backward movement of the seat 530. The seat tilting module 800 can move the seat 530 in a horizontal position forward by operating the seat control lever 730. [ The user can operate the seat control lever 730 after putting the weight on the seat 530 in a standing state. At this time, the seat tilting module 800 can restore the seat 530 in an upright state while moving it downward.

The seat tilting module 800 is configured to detect an upright angle adjusting device (850 in Fig. 18) for setting the standing angle (the standing angle of the gas cylinder, see Fig. 18 in Fig. 18) at which the seat 530 stands from the floor surface . An opening (821 in FIG. 15) for installing the standing angle adjusting device 850 may be formed on the fixing plate 820. The opening 821 may be disposed at a rear portion of the fixing plate 820. The rising angle regulating device 850 may be installed to be rotatable with respect to the fixing plate 820 forming the opening 821. In other words, at least a portion of the standing angle regulating device 850 can be inserted into the opening 821. The remaining part of the standing angle adjusting device 850 may be fixed to the fixing plate 820. The center of rotation of the gas cylinder 840 can be lowered when the rising angle adjusting device 850 is inserted into the opening 821 and fixed to the fixing plate 820. Therefore, There is an advantage of being able to design.

The standing angle? Can be set by the standing angle adjusting device 850. The upward force and the rotational force applied to the seat 530 according to the standing angle alpha can be adjusted. In other words, the force applied perpendicularly to the seat 530 by the seat tilting module 800 (hereinafter, vertical force) may be changed. As the standing angle a approaches 90 °, the normal force provided to the seat 530 may become larger. In contrast, as the standing angle approaches 0, the vertical force applied to the seat tilting module 800 can be reduced. For example, a person having a heavy body weight can increase the vertical force by adjusting the standing angle?. In summary, there is an advantage that a stable standing motion can be provided to the user by setting the standing angle [alpha] differently based on the user's body condition.

The chair body 50 may further include a supporter 700 on which the seat tilting module 800 is mounted. The supporter 700 may be installed in the plurality of frames. The supporter 700 may be screwed to at least one of the plurality of frames. Alternatively, the supporter 700 may be integrally formed with at least one of the plurality of frames. Meanwhile, the seat tilting module 800 may be detachably mounted to the supporter 700. [ For example, the seat tilting module 800 may be screwed to the supporter 700. [ Since the seat tilting module 800 is detachably mounted to the supporter 700, the maintenance of the seat tilting module 800 is simplified.

The plurality of frames may include a pair of support frames (510, 510) forming an appearance of the standing up chair (5). The pair of support frames 510 and 510 'may be spaced apart from each other. A plurality of

wheels

610 and 620 may be mounted on the support frames 510 and 510 '.

Meanwhile, in the present embodiment, the pair of support frames 510 and 510 'have the same configuration. Therefore, for convenience of explanation, only one support frame 510 will be described, and a detailed description of the other support frame 510 'will be omitted.

The support frame 510 may include a first support frame 511 on which the auxiliary rotation wheel 610 is mounted and a second support frame 512 on which the main rotation wheel 620 is mounted. The main rotating wheel 620 may be provided with power for driving the standing up chair 5. The power may, for example, be provided by a motor. As another example, it is also possible that the power is provided as a force (attraction) of the user. Meanwhile, the auxiliary rotating wheel 610 may be used for switching directions. For this purpose, the auxiliary rotary wheel 610 may be rotatably coupled to the first support frame 511.

The support frame 510 may further include a handle 513 extending from the second support frame 512 and capable of being held by the user. When the main rotating wheel 620 is positioned below the second supporting frame 512 with the second supporting frame 512 as the center, the handle 513 is positioned on the upper side of the second supporting frame 512 As shown in FIG.

The plurality of frames may further include a side frame 515 connecting the first support frame 511 and the second support frame 512 to each other. The side frame 515 may include a second side frame 517 connecting substantially the center of the first support frame 511 and the second support frame 512. The side frame 515 may further include a first side frame 516 connecting the first support frame 511 and the second support frame 512 on the upper side. The first side frame 516 may be disposed above the second side frame 517. The side frame 515 may further include a third side frame 518 connecting the first support frame 511 and the lower side of the second support frame 513.

The plurality of frames may further include a connection frame 519 and a stationary frame 520 connecting one side frame 515 and the other side frame 515 '. The connection frame 519 may connect the third side frame 518 on one side and the third side frame 518 'on the other side. A plurality of connection frames 519 may be provided, and a plurality of connection frames may connect the side frames 515 and the side frames 515 '. The fixed frame 520 can connect the second side frame 517 on one side and the second side frame 517 'on the other side. On the other hand, the supporter 700 may be coupled to the second side frame 517 and the second side frame 517 '. In other words, the supporter 700 can connect the second side frame 517 on one side and the second side frame 517 'on the other side.

The connection frame 519 can support the supporter 700. On the upper surface of the connection frame 519, the supporter 700 can be contacted and supported. Accordingly, when a load is generated on the seat tilting module 800 by seating the user's seat 530, the weight of the load is distributed to at least one of the plurality of frames by the connecting frame 519 . Therefore, there is an advantage that the durability of the standing up chair 5 is improved and the wearer's feeling of wearing stability is improved.

Meanwhile, in another embodiment, the supporters 700 may be provided in pairs, and each supporter 700 may be coupled to both sides of the seat tilting module 800. At this time, the bottom surface of the seat tilting module 800 may be supported by the connection frame 519.

Since the seat tilting module 800 is seated on the connection frame 519 and the fixed frame 520 in this specification, the connection frame 519 and the fixing frame 520 are fixed to the

seating portions

519 and 520 Name it.

Prior to describing FIG. 15, the orientation of the seat tilting module 800 is defined.

The right side of the seat tilting module 800 shown in the figure can be understood as a front side of the actual seat tilting module 800. [ And the left side of the seat tilting module 800 shown in the figure can be understood as the rear of the actual seat tilting module 800. [ Further, the upper side of the seat tilting module 800 shown in the figure can be understood as the upper side of the actual seat tilting module 800. Further, the lower side of the seat tilting module 800 shown in the figure can be understood as the lower side of the actual seat tilting module 800. [

Hereinafter, the seat tilting module 800 will be described with reference to FIG.

The seat tilting module 800 may include a rotating plate 810 on which the seat 530 is mounted. The seat 530 may be mounted on the upper surface of the rotary plate 810. The rotary plate 810 may be formed in a plate shape, for example. The rotary plate 810 can be moved upward (or upright) in the horizontal direction by the four-bar link 830, which will be described later. In the process of rising the rotation plate 810, the rotation plate 810 can be inclined forward. In addition, the rotary plate 810 can be moved downward by the four-link 830 in the standing state. In the process of moving the rotating plate 810 downward, the rotating plate 810 may be returned to a horizontal state.

The seat tilting module 800 may further include a fixing plate 820 disposed above the connection frame 519. The fixing plate 820 may be supported by the supporter 700. Also, the fixing plate 820 may be detachably coupled to the supporter 700. For example, the fixing plate 820 may be screwed to the supporter 700. The four-link 830 may be coupled to the fixing plate 820. Accordingly, the rotation plate 810 can be moved forward or backward with respect to the fixing plate 820. [

The seat tilting module 800 may further include a four-bar link 830 connecting the rotating plate 810 and the fixing plate 820. The four-bar link 830 may be provided as a pair. And a pair of four-link links 830 may be provided on both sides of the rotating plate 810 and the fixing plate 820, respectively.

The four-link link 830 includes a first link 831 as a rotating link, a second link 832 as a fixed link, and third and

fourth links

831 and 832 hingedly connected between the first and

second links

831 and 832. [

Links

833 and 834, respectively. In detail, the first link 831 may be fixed to the front end side of the rotary plate 810. The second link 832 may be fixed to the rear end side of the fixing plate 820. The first link 831 may be vertically downwardly positioned with respect to the rotation plate 810 when the rotation plate 810 is in a horizontal state. The second link 832 may be vertically upright relative to the fixing plate 820. The first and

second links

831 and 832 may be formed in a plate shape having a U-shaped cross section. The upper portion of the second link 832 may be hinged to the center of the first link 831. The lower portion of the second link 832 may be hinged to the lower portion of the first link 831.

The seat tilting module 800 may further include a gas cylinder 840 that hinges between the lower portion of the rotary plate 810 and the upper portion of the fixing plate 820 and provides a driving force to the four- have. The gas cylinder 840 is hinged between the upper portion of the first link 831 and the lower portion of the second link 832 to provide a predetermined gas pressure to the internal compression space, Section link 830 of the link. The gas cylinder 840 may include a cylinder body 841 hinged to a lower portion of the rotary plate 810 and a piston 842 accommodated in the cylinder body 841. The piston 842 may be connected to the rising angle regulating device 850.

The gas cylinder 840 may be connected to a seat control lever 730 (see FIG. 24), which will be described later. The size of the compression space inside the gas cylinder 840 can be varied by a predetermined gas pressure by pulling the handle lever 732 of the seat control lever 730 to be described below. At this time, if the externally applied force is smaller than the gas pressure, the total length of the gas cylinder 840 increases as the compression space increases. On the contrary, when the force externally acting is larger than the gas pressure, the length of the entire gas cylinder 840 is reduced as the compression space is reduced. The weight of the load can be understood as a weight of the user sitting on the seat 530, for example.

On the other hand, when the handle lever 732 is pulled out, the size of the compression space inside the gas cylinder 840 can be fixed. Thus, the variable length of the gas cylinder 840 can be maintained. It is preferable that the pressure of the gas cylinder 840 is used to match the body weight and body shape of the user. However, even if the gas cylinder 840 having the same pressure is used, the installation angle and stroke of the gas cylinder 840 are adjusted, It is possible to provide a standing up assistant operation suited to body weight and body shape.

Figs. 16 and 17 are views showing the operating state of the seat tilting module in the operation of the standing up chair according to the embodiment.

As shown in FIG. 16, when the user is seated on the seat, the rotation plate 810 and the fixing plate 820 maintain a horizontal state. At this time, the gas cylinder 840 maintains a standing angle [alpha] set with respect to the fixing plate 820. [

When the user pulls the handle lever 732 and slightly grasps the buttocks, the gas cylinder 840 can move from FIG. 16 to FIG. 17 as the entire length of the gas cylinder 840 increases. At this time, the first, third, and

fourth links

831, 833, and 834 are rotated about the respective hinges while the second link 832 is fixed. Accordingly, the rotary plate 810 connected to the first link 831 can be moved upward and tilted forward. In addition, the rotating plate 810 performs a standing assist operation for pushing up the buttocks of the user.

On the other hand, when the user pulls the handle lever 732 and puts the weight on the seat with the buttocks, the gas cylinder 840 can move from FIG. 17 to FIG. 16 while reducing the overall length. At this time, the rotary plate 810 is moved downward and is returned to the original state in a horizontal state. The rotation plate 810 provides a stable seat assist operation with the user's buttocks seated on the seat.

Of course, when the user releases the pulling of the handle lever 732 during the standing or sitting operation, the length of the gas cylinder 840 can be maintained as it is due to the characteristics of the gas cylinder 840. Therefore, the user can stop at a desired position during standing or sitting operation.

FIG. 18 is a side view of the seat tilting module to which the standing angle adjusting device for adjusting the standing angle according to the third embodiment is applied, FIG. 19 is a partial enlarged view of the seat tilting module showing the standing angle adjusting device according to the third embodiment to be.

Referring to FIGS. 17 through 19, the standing angle? Between the gas cylinder 840 and the fixing plate 820 can be set by the standing angle adjusting device 850. In other words, as shown in the drawing, a virtual extension line 11 'extending in the longitudinal direction of the gas cylinder 840 by the standing angle regulating device 850 and a virtual extension line 11' extending in the longitudinal direction of the rotation plate 810 The standing angle? May be formed between the extending virtual extension lines 11.

The standing angle adjusting device 850 may include an angle adjusting case 851 coupled to the fixing plate 820. In detail, the angle adjusting case 851 may be installed in a fixing plate 820 forming the opening 821. At least a part of the angle adjusting case 851 may penetrate through the opening 821. The angle regulating case 851 may have an open top shape. For example, the angle adjusting case 851 may have a U-shaped cross section. The angle adjusting case 851 may be detachably coupled to the fixing plate 820. For example, the angle adjusting case 851 may be screwed to the fixing plate 820. Alternatively, the angle adjusting case 851 may be integrally formed with the fixing plate 820 forming the opening 821.

A rotation opening 852 and a rotation hole 853 may be formed in the angle adjustment case 851 to set the rising angle α between the gas cylinder 840 and the fixing plate 820. The rotation opening 854 may be formed to extend in the direction intersecting with the imaginary extension line 11 formed on the fixing plate 820 so that the standing angle α is variable. The first rotation axis 860, which is a first rotation center, may pass through the rotation opening 854. The second rotation axis 867, which is the second rotation center, may pass through the rotation hole 853. More details of setting the standing angle [alpha] with the first rotation center and the second rotation center will be described later.

The standing angle regulating device 850 may include a first rotating member 854 coupled to the gas cylinder 840. A cylinder body 841 or a piston 842 of the gas cylinder 840 may be coupled to the first rotary member 854. For example, when the piston 842 is coupled to the first rotary member 854, the cylinder body 841 may be coupled to the rotary plate 810. As another example, when the cylinder body 841 is coupled to the first rotary member 854, the piston 842 can be coupled to the rotary plate 810. The first rotating member 854 may have a first through hole 854a through which the first rotating shaft 860 passes. The first through hole 854a may be formed on one surface of the first rotating member 854 and on the other surface opposite to the one surface. The first rotary member 854 and the gas cylinder 840 may rotate around a first rotation axis 860 inserted in the first through hole 854a as a first rotation center.

The standing angle adjusting device 850 may further include a second rotating member 855 positioned between the first rotating member 854 and the angle adjusting case 851. A second through hole (not shown) through which the first rotation shaft 860 passes may be formed in the second rotary member 855. The second through hole (not shown) may be formed on one surface of the second rotating member 855 and on the other surface facing the one surface. The first rotation shaft 860 may pass through the first through hole 854a and the second through hole (not shown).

The first rotation shaft 860 may include a bolt 861 and a nut 862 to act as a support shaft for rotation. The second rotating member 855 may connect the first rotating member 854 and a standing angle adjusting lever 868 for adjusting the standing angle [alpha]. To this end, a third through hole 855b through which the second rotation shaft 867 coupled to the upright angle control lever 868 passes may be formed in the second rotary member 855. [ The third through hole 855b may be formed on one surface of the second rotating member 855 and on the other surface facing the one surface. The second rotation shaft 867 may pass through the rotation hole 853 and the third through hole 855b. When the second rotation shaft 867 is rotated by the rising angle adjustment lever 868, the second rotation member 855 and the first rotation member 854 rotate the second rotation axis 867 toward the second And can be rotated around the center of rotation.

For example, when the second rotating shaft 867 rotates in the first direction (the clockwise direction in the drawing), the second rotating member 855 and the first rotating member 854 rotate about the second rotating shaft 867 In the first direction. At this time, the first rotating member 854 and the first rotating shaft 860 may be moved upward along the rotation opening 852. [ At this time, the standing angle? May increase.

Conversely, when the second rotating shaft 867 rotates in a second direction ccw (counterclockwise in the figure) opposite to the first direction, the second rotating member 855 and the first rotating member 854 May rotate in the second direction about the second rotation axis 867. [ At this time, the first rotating member 854 and the first rotating shaft 860 may be moved downward along the rotation opening 852. At this time, the standing angle alpha may decrease.

A plurality of locking

grooves

852a, 852b and 852c may be formed in the rotation opening 852 in order to maintain the rising angle alpha set by the second rotation center rotation of the gas cylinder 840 have. Each of the plurality of latching

grooves

852a, 852b, 852c may be formed to be downwardly opened from the rotation opening 852. [ The plurality of latching

grooves

852a, 852b and 852c may include a second latching groove 852a formed at the center of the rotation opening 852. [ The plurality of latching

grooves

852a, 852b and 852c may further include a first latching groove 852a formed in the upper portion of the rotation opening 852. [ The second latching groove 852a may be formed above the second latching groove 852b. The plurality of latching

grooves

852a, 852b, and 852c may further include a third latching groove 852c formed below the rotation opening 852. The third latching groove 852c may be formed below the second latching groove 852b.

The gas cylinder 840, the first rotating member 854, and the second rotating member 855 can be rotated at the second rotation center by the operation of the standing angle control lever 868. [ The first rotating shaft 860 passing through the first rotating member 854 and the second rotating member 855 may move upward or downward along the rotation opening 852. The first rotation axis 860 may be engaged with any one of the plurality of

engagement grooves

852a, 852b, and 852c. When the first rotation shaft 860 is engaged with any one of the plurality of

engagement grooves

852a, 852b, and 852c, the standing angle? Can be maintained.

In this specification, the rising angle? Formed when the first rotation shaft 860 is engaged with the third engagement groove 852c is referred to as a first setting angle d1. The rising angle? Formed when the first rotation shaft 860 is engaged with the second engagement groove 852b is referred to as a second setting angle d2. The rising angle? Formed by the first rotation shaft 860 being engaged with the first engaging groove 852a is referred to as a third setting angle d3.

The first setting angle d1 may be greater than the second setting angle d2. The second setting angle d2 may be greater than the third setting angle d3.

The user can manually adjust the standing angle [alpha] using the first rotation center.

Further, since the user can set the standing angle [alpha] at any one of a plurality of predetermined angles (for example, first to third setting angles) using the second center of rotation, the user can quickly adjust his or her body weight The standing angle? Can be set. The set standing angle alpha is adjusted to the latching groove and the position is fixed to a predetermined value.

20 is a graph showing the normal force of the gas cylinder according to the stroke change according to the third embodiment.

Prior to explaining Fig. 20, the configuration of the graph shown in Fig. 20 will be described.

The X-axis represents the stroke change of the gas cylinder 840.

And the Y axis represents the normal force applied to the gas cylinder 840. [

The rhombus graph shows the magnitude of the vertical force according to the stroke change of the gas cylinder 840 at the first set angle d1 when the set weight is applied to the rotary plate 810. [ The square graph shows the magnitude of the normal force according to the stroke change of the gas cylinder 840 at the second setting angle d2 when the setting weight is applied to the rotating plate 810. [ The circle graph shows the magnitude of the normal force according to the stroke change of the gas cylinder 840 at the third setting angle d3 when the setting weight is applied to the rotating plate 810. [

16, 17, and 20, when the X-axis value is S1, each graph indicates a state in which the gas cylinder 840 is extended. In other words, when the X-axis value is S1, the rotary plate 810 is moved upward toward the front. And the user may be in an upright state. In this embodiment, S1 may be '0' as a default value with no stroke change.

On the other hand, when the X-axis value is S11, each graph indicates a state in which the gas cylinder 840 is compressed due to a load applied to the rotary plate 810. [ In other words, when the X-axis value is S11, the rotary plate 810 may be in a horizontal state. The user may be seated on the seat 530.

The greater the standing angle?, The greater the magnitude of the normal force of the gas cylinder 840 applied to the rotating plate 810 (or the sheet 530). For example, when the standing angle? Is the first set angle d1, the vertical force of the gas cylinder 840 is the largest. As the standing angle alpha approaches the second set angle d2 and the third set angle d3, the magnitude of the normal force gradually decreases. Therefore, when the standing angle? Is the first predetermined angle d1, the upward force applied to the rotary plate 810 or the seat 530 may be greater than at other setting angles d2 and d3. As the standing angle? Gradually decreases, the upward force applied to the rotating plate 810 and the seat 530 may increase.

Accordingly, as the weight of the user is increased, the standing angle? May be increased to increase the vertical force of the gas cylinder 840. Thus, the user can easily stand up.

Or, as the weight of the user is lighter, the standing angle? May be reduced and the vertical force of the gas cylinder 840 may be reduced. Accordingly, the user can stably stand up. In summary, the standing angle? Can be adjusted according to the weight of the user, thereby providing a more stable standing assist operation to the user.

FIG. 21 is an enlarged view of a portion of an upright auxiliary chair for explaining a coupling structure between a supporter and an upstanding auxiliary chair according to the third embodiment. FIG.

14 and 21, the supporter 700 may include a supporter body 701 forming an outer appearance. The supporter main body 701 may be provided in an open top shape. For example, the supporter main body 701 may have a U shape. The seat tilting module 800 can be seated and supported on the supporter body 701. The seat tilting module 800 may be detachably coupled to the supporter body 701.

The supporter 700 may further include a supporter fixing member 702 for fitting the supporter main body 701 into the standing up chair 50. The supporter fixing member 702 may have an approximately `? 'Shape. And can be fitted to the fixed frame 520. [ The supporter main body 701 can be fitted into the fixing frame 520 by the supporter fixing member 702 so that the user can easily mount or detach the seat tilting module 800 to the chair main body 50 .

In the present embodiment, it is described that the supporter fixing member 702 is coupled to the fixed frame 520. However, in another embodiment, the fixing frame 520 may be omitted, and the supporter fixing member 702 may be fitted to the second side frame 517.

Meanwhile, the supporter 700 may further include a locking device 710 that can selectively restrict or release the fitting engagement of the supporter fixing member 702. The supporter fixing member 702 may be constrained by the locking device 710 in a state of being fitted to the fixing frame 520. In this case, the phenomenon that the fitting of the supporter fixing member 702 is released due to external impact or attraction can be reduced.

The locking device 710 may include a pressing portion 713 for releasing the fitting of the supporter fixing member 702 in a restrained state. The locking device 710 may further include a device housing 711 in which at least a portion of the pressing portion 713 is received. When the pressing portion 713 is pressed, the pressing portion 713 can be inserted into the device housing 711. [ And the locking device 710 can be unlocked. Thus, the fitting of the supporter fixing member 702 can be released.

The locking device 710 may further include a device fixing portion 712 for fixing the device housing 711 to the supporter body 701. The apparatus fixing portion 712 can be screwed to at least one of the supporter main body 701 and the apparatus housing 711. [ Alternatively, the apparatus fixing portion 712 may be integrally formed with at least one of the apparatus housing 711 and the supporter main body 701.

Fig. 22 is a partial side view of a standing upright chair for explaining a state in which the seat tilting module according to the third embodiment is mounted on the standing up chair; Fig. 23 is a partial side view of the standing tilting chair, Fig. 7 is a view showing a state in which the pushing portion of the apparatus is pressed.

Referring to FIGS. 22 and 23, at least a part of the pressing portion 713 can be received inside the apparatus housing 711. In detail, the cross section of the pressing portion 713 may have a substantially trapezoidal shape. The pressing portion 713 may include a pressing portion contacting surface 714 which is slid on at least one surface of a locking portion 715 described later when the pressing portion 713 is pressed. More details about the locking portion 715 will be described later.

The locking device 710 may further include a lock portion 715 whose position is changed by the pressing portion 713. The locking portion 715 may have a shape extending gradually downward toward an area. For example, the cross section of the locking portion 715 may have a substantially trapezoidal shape. If the pressing portion 713 is not pressed, at least a part of the locking portion 715 can be maintained protruded to the outside. In other words, when the pressing portion 713 is not pressed, the locking portion 715 can maintain the protruding state in the direction of closing the fixing frame 520 in the apparatus housing 711.

Meanwhile, the locking portion 715 may be formed with a locking portion groove 716 into which the pressing portion 713 can be inserted. The lock part groove 716 may be formed with a locking part first contact surface 717 on which the pressing part contact surface 714 can slide. The lock first contact surface 717 may have a shape that is inclined in a direction opposite to the tilting direction of the pusher contact surface 714 to contact the pusher contact surface 714. [

When the pressing portion 713 is pressed, the pressing portion 713 can be lowered (in the drawing). At this time, the lock portion 715 may be moved rearward (rightward in the drawing) while the pusher contact surface 714 slides on the first contact surface 717 of the lock portion. When the pressing portion 713 is pressed to the maximum, the locking portion 715 can be received in the device housing 711. Accordingly, the locking device 710 can be unlocked such that the fitting between the supporter fixing member 702 and the fixing frame 520 can be disengaged.

The locking portion 715 may further include a locking portion second contact surface 719 for fitting the fixing frame 520 and the supporter main body 701 into engagement with each other. As another example, when the fixing frame 520 is inserted into the locking portion 715, the fixing frame 520 slides on the locking portion second contact surface 719 and is fitted to the supporter fixing member 702 . Meanwhile, in the process of sliding the fixed frame 520 on the second contact surface 719 of the lock part, the lock part 715 can be moved backward.

The locking device 710 may further include an elastic member 718 for restoring the locked position of the locking portion 715 in place. The elastic member 718 may be disposed between the locking portion 715 and the device housing 711. When the position of the locking portion 715 is variable, a restoring force may be accumulated in the elastic member 718. [ The elastic member may include, for example, a compression spring.

The locking portion 715 may compress the elastic member 718 when the locking portion 715 is moved to the rear of the device housing 711 by the pressing of the pressing portion 713 . Therefore, restoring force can be accumulated in the elastic member 718. [ When the pressing force of the pressing portion 713 is cut off, the restoring force accumulated in the elastic member 718 can be provided to the locking portion 715. [ Accordingly, the locking portion 715 can be restored to its original position. At this time, a stopper (not shown) may be provided in the apparatus housing 711 to prevent the locking portion 715 from protruding from the apparatus housing 711.

As another example, the locking portion 715 may be moved rearward of the apparatus housing 711 in the process of sliding the fixing frame 520 on the second contact surface 719 of the locking portion. The locking portion 715 may compress the elastic member 718. [ Therefore, restoring force can be accumulated in the elastic member 718. [ When the supporter fixing member 702 is fitted into the fixing frame 520, the external force applied to the locking portion 715 can be blocked. Accordingly, the locking portion 715 can be restored to its original position by the restoring force of the elastic member 718. [

In addition, in the present embodiment, the seat tilting module 800 can be detachably mounted on the fixed frame 520, so that it can be applied to various kinds of chairs.

In this embodiment, the wheelchair is folded, stored or transported during storage or transportation. At this time, since the seat tilting module 800 can be easily separated from the wheelchair, the user can fold or store or transport the wheelchair. That is, since the seat tilting module 800 can be detachably mounted on the wheel chair, the wheel chair can be easily stored and transported.

Fig. 24 is a view showing a part of the standing up chair for explaining a plurality of levers provided in the standing up chair according to the third embodiment, Fig. 25 is a view showing a part of the standing up chair shown in Fig. And Fig. 26 is a schematic view showing a height-adjusting lever applied to the standing up chair according to the third embodiment.

24 to 26, any one of the first to third side frames 516, 517 and 518 may be provided with a seat control lever (not shown) for operating the length of the gas cylinder 840 of the seat tilting module 800, (730). For example, the seat control lever 730 may be provided on the second side frame 517.

The seat control lever 730 may include a handle lever 732 for manipulating the length of the gas cylinder 840. The handle lever 732 may have a lever shape that can be manipulated by a user's hand. And the handle lever 732 is configured to be pulled by the user's hand.

The seat control lever 730 may further include a seat lever case 731 in which the handle lever 732 is received. The seat lever case 731 may be installed on the second side frame 517. Meanwhile, the seat lever case 731 may be detachably mounted on any one of the first to third side frames 516, 517, and 518. It is possible to vary the position of the seat lever case 731 according to the user's preference, thereby improving convenience for the user. For example, when the user is a left-handed person, the seat lever case 731 may be mounted on a frame located on the left side of the chair body.

The seat control lever 730 may further include a wire 733 connecting the handle lever 732 and the gas cylinder 840. The wire 733 is provided to transmit the movement of the handle lever 732 to the lever 734 of the gas cylinder 840. The wire 733 is preferably embedded so as not to be exposed to the outside.

When the user pulls the handle lever 732, a force for pulling the handle lever 732 can be transmitted to the lever 734 of the gas cylinder 840 by the wire 733. When a force pulling the handle lever 732 is transmitted to the lever 734 of the gas cylinder 840, a predetermined gas pressure can be applied to the internal compression space of the gas cylinder 840. The overall length of the gas cylinder 840 may vary depending on the magnitude of the force externally provided. Accordingly, the seat tilting module 800 can assist the user in standing or sitting.

On the other hand, when the user stops pulling the handle lever 732, the lever 734 of the gas cylinder 840 can be returned to the original state by the wire 733. Accordingly, the internal compression space size of the gas cylinder 840 can be fixed. And the entire length of the gas cylinder 840 can be fixed. Therefore, the standing or sitting operation of the seat tilting module 800 can be stopped.

The seat control lever 730 may further include a brake regulator 740 for stopping the movement of the wheel 60.

The brake control device 740 further includes a brake lever 742 capable of stopping the movement of the wheel 60 by a user's operation and a brake lever case 741 in which the brake lever 742 is received can do. The brake lever case 741 may be installed on the second side frame 517, for example.

The fourth embodiment will be described below.

The present embodiment differs from the third embodiment in that there is a difference in the structure in which the seat tilting module is mounted on the chair body.

In the present embodiment, the detailed description of the same configuration as the third embodiment will be omitted. In the present embodiment, the same reference numerals as those of the third embodiment are used.

28 is a partial enlarged view of the standing upright chair viewed from the side according to the fourth embodiment, FIG. 29 is a partial enlarged view of the standing upright chair viewed from the front according to the fourth embodiment, Fig. 2 is a perspective view showing a plurality of frames constituting a chair body according to the present invention;

27 to 29, the standing up chair 5 according to the fourth embodiment of the present invention may include a chair body 50 formed of a plurality of frames.

The plurality of frames may include a pair of support frames (510, 510) forming an appearance of the standing up chair (5). The support frame 510 includes a first support frame 511 and a second support frame 512 separated from the first frame 511 and a handle 513 can do.

The plurality of frames form side surfaces and may include a side frame 515 connecting the first support frame 511 and the second support frame 512. The side frame 515 includes a first side frame 516 connecting the upper side portion, the central portion and the lower side portion of the first support frame 511 and the

second support frame

512, 517, and a third side frame 518.

The chair body 50 may further include a seating portion 550 disposed between one side frame 515 and the other side frame 515 '. A seat (not shown) for seating the user may be positioned on the seating part 550. A seat tilting module 800 may be disposed between the seat and the seat portion 550 to assist the user in standing up and sitting on the seat. More details about the seat tilting module 800 will be described later.

The seating part 550 may include a fixed frame 551 disposed between the side frame 515 and the side frame 515 '. The plurality of fixed frames 551 may be provided. In addition, a plurality of fixed frames 551 may be disposed adjacent to the second side frame 517 and the three side frames 518. In detail, the plurality of fixed frames 551 may include first to fourth fixed

frames

552, 553, 554, and 555. The first fixed frame 552 and the second fixed frame 553 may be disposed adjacent to the pair of second side frames 517 and 517 ', respectively. In addition, the third fixed frame 554 and the fourth fixed frame 555 may be disposed adjacent to each of the pair of third side frames 518 and 518 '.

The seating portion 550 further includes a fixing portion 556 for fixing the third fixing frame 554 and the fourth fixing frame 555 to the pair of third side frames 518 and 518 ' .

The seating part 550 may include a connection frame 561 connecting one of the plurality of fixed frames 552 to 554 and the other. The connection frame 561 may have an approximately `X` shape. For example, the connection frame 561 may have a shape in which one frame and another frame intersect with each other. And the intersecting inner sides of the one frame and the other frame may be hingedly folded or unfolded. For example, when one frame and another frame of the connection frame 561 are folded, the connection frame 561 may have an approximately 'I' shape. At this time, it can be understood that the chair body 50 is folded. Thus, the user can more easily carry the standing up chair 5. As another example, when one frame and the other frame of the connection frame 561 are rotated away from each other, the connection frame 561 may have a substantially 'X' shape. At this time, the chair main body 50 can be understood as being spread (or installed) so that the user can be seated.

Meanwhile, a plurality of the connection frames 561 may be provided. For example, the connection frame 561 may include a first connection frame 562 and a second connection frame 563. The first connection frame 562 may connect the first fixing frame 552 and the fourth fixing frame 555. The second connection frame 563 may connect the second fixing frame 553 and the third fixing frame 554.

The first connection frame 562 and the second connection frame 563 may be spaced apart from each other. For example, the first connection frame 562 and the second connection frame 563 may extend in the front-rear direction of the pair of second side frames 517 and 517 '(or a pair of second side frames 517 , 517 ') extend in a long direction).

The seating part 550 may further include an auxiliary frame 571 connecting the first connection frame 562 and the second connection frame 563 to each other. The auxiliary frames 571 may be provided as a pair. For example, the auxiliary frame 571 may include a first auxiliary frame 572 and a second auxiliary frame 573 spaced apart from the first auxiliary frame 572. On the first and second

auxiliary frames

572 and 573, a seat on which a user can sit can be disposed. A seat tilting module 800 may be disposed between the seat and the first and second

auxiliary frames

572 and 573 to assist the user in standing on the seat. The seat tilting module 800 may be removably mounted on the first and second

auxiliary frames

572 and 573. The seat tilting module 800 can be easily separated and attached to the standing up chair 5, so that the maintenance of the seat tilting module 800 can be simplified. More details about the seat tilting module 800 will be described later.

Referring to FIG. 30, the seat tilting module 800 may include a rotating plate 810 on which the seat is mounted, and a fixing plate 820 disposed on the seating portion 550. The four-link link 830 includes a first link 831 as a rotating link, a second link 832 as a fixed link, and third and

fourth links

831 and 832 hingedly connected between the first and

second links

831 and 832. [

Links

833 and 834, respectively.

The seat tilting module 800 may further include a gas cylinder 840 that hinges between the lower portion of the rotary plate 810 and the upper portion of the fixing plate 820 and provides a driving force to the four- have. The gas cylinder 840 is hinged between the upper portion of the first link 831 and the lower portion of the second link 832 to provide a driving force to the quadric link 830. The gas cylinder 840 may include a cylinder body 841 hinged to a lower portion of the rotary plate 810 and a piston 842 accommodated in the cylinder body 841.

The gas cylinder 840 may be connected to a seat control lever 730 (shown in FIG. 24), which will be described later. The size of the compression space inside the gas cylinder 840 can be varied by a predetermined gas pressure by pulling the handle lever 732 of the seat control lever 730 to be described below.

On the other hand, when the handle lever 732 is pulled out, the size of the compression space inside the gas cylinder 840 can be fixed. Thus, the variable length of the gas cylinder 840 can be maintained.

A lower locking device 750 may be further provided at a lower portion of the seat tilting module 800 to be mounted and fixed to the seating portion 550. The lower locking device 750 may be coupled to the fixing plate 820. In addition, the lower locking device 750 may fix (or restrain) the fixing plate 820 mounted on the seating part 550 so as not to be separated.

The lower locking device 750 may include a device housing 751 that forms an appearance. The device housings 751 are provided in a pair and may have a U-shaped opening with one side open. Each of the pair of device housings 751 may be disposed at a position corresponding to each of the pair of four-link links 830.

In the present embodiment, it is described that the device housing 751 is provided as a pair, but the device housing 751 may be integrally formed.

Meanwhile, the apparatus housing 751 may include a mounting opening 753 through which the auxiliary frame 571 can be mounted (or inserted). The mounting opening 753 may be formed in a plurality of directions in which the auxiliary frame 571 extends in the longitudinal direction (or in the forward and backward directions of the apparatus housing 751) in order to mount the auxiliary frame 571.

The lower locking device 750 may further include a rotation mechanism 760 that can selectively open and close the mounting opening 753. [ The number of the rotation mechanisms 760 may be plural or may correspond to the number of the mounting openings 753. The rotation mechanism 760 can rotate around a point of the apparatus housing 751 as a center point. In detail, the rotation mechanism 760 can rotate clockwise or counterclockwise about the rotation center of the first projection 751a.

The lower locking device 750 may further include a connection member 752 connecting the plurality of rotation mechanisms 760. The plurality of rotation mechanisms 760 provided by the connecting member 752 can be interlocked with each other. For example, when any one of the plurality of rotation mechanisms 760 is moved in the clockwise direction, the remaining rotation mechanism 760 can be moved together in the clockwise direction by the connection member 752. [

The lower locking device 750 may further include an elastic member 754 for restoring the variable position of the rotation mechanism 760. The elastic member may connect the rotation mechanism 760 and the device housing 751. The elastic member 754 may include, for example, a tension spring. When the rotation mechanism 760 is rotated in the first direction (the direction in which the mounting opening 753 is opened) by the external force, the restoring force can be accumulated in the elastic member 754. When the external force provided to the rotation mechanism 760 is interrupted, the rotation mechanism 760 is rotated in the second direction (the direction in which the mounting opening 753 is closed) opposite to the first direction by the restoring force . Accordingly, the rotation mechanism 760 can be restored to its original position.

In the present embodiment, the first direction can be understood as the outward direction of the device housing 751. [ Further, the second direction can be understood as a direction toward the center of the apparatus housing 751. [

In this embodiment, when the rotation mechanism 760 is rotated in one direction, the rotation mechanism 760 can rotate in the other direction due to the restoring force of the elastic member 754. On the other hand, as another embodiment, the elastic member 754 is omitted, and the rotating mechanism 760 rotated in one direction can rotate in the other direction by its own weight. For example, when the rotation mechanism 760 is mounted on the mounting opening 753, the rotation mechanism 760 can rotate in the second direction by its own weight. As another example, when the rotating mechanism 760 is separated from the mounting opening 753, the rotating mechanism 760 rotated in the first direction can be rotated in the second direction by its own weight.

When the locking part 765 is rotated in the second direction with the auxiliary frame 571 mounted on the mounting opening 753, the mounting opening 753 is closed by the locking part 765 . At this time, the auxiliary frame 571 may be fixed to the lower locking device 750. Conversely, when the locking portion 765 is rotated in the first direction by the elastic member 754, the mounting opening 753 can be opened. At this time, the auxiliary frame 571 mounted on the mounting opening 753 can be separated from the mounting opening 753. [

FIG. 31 is a partially enlarged view showing a lower locking device of the seat tilting module according to the fifth embodiment, and FIG. 32 is a partially enlarged view showing a lower locking device unlocked in FIG. 31.

Referring to FIGS. 31 and 32, the apparatus housing 751 may include a first protrusion 751a protruding inward. The first protrusion 751a may pass through one point of the rotation mechanism 760. For example, the first protrusion 751a may be inserted into the hole 762 formed in the center of the rotation mechanism 760. [

The rotation mechanism body 761 may further include a second projection 751b to which one side of the elastic member 754 is fixed. The second protrusion 751b may protrude to the inside of the apparatus housing 751. [

The rotating mechanism 760 may include a rotating mechanism body 761 for forming an outer tube. The rotation mechanism body 761 may include the holes 762 through which the first protrusions 751a are inserted. The hole 762 may be formed at the center of the rotation mechanism body 761, for example. The rotation mechanism body 761 can be rotated clockwise or counterclockwise when it is inserted into the first projection 751a.

The rotation mechanism body 761 may further include a locking projection 764 for fixing the other side of the elastic member 754. [ One side of the elastic member 754 is fixed to the apparatus housing 751 and the other side is fixed to the rotation mechanism body 761. Thus, the rotation mechanism body 761 is rotated by the elastic member 754 Can be provided.

The rotating mechanism body 761 may further include a locking portion 765 for selectively opening and closing the mounting opening 753. [ The locking portion 765 may be rounded from the rotation mechanism body 761 at a predetermined curvature. The locking portion 765 may be rounded toward the center of the rotation mechanism body 761. In other words, the locking portion 765 may be formed to be rounded in the direction of closing the mounting opening 753.

The locking portion 765 may include a locking surface first surface 765a defining an inner surface and a locking surface second surface 765b defining an outer surface. The locking portion first surface 765a and the locking portion second surface 765b may be rounded toward the mounting opening 753 side.

In summary, the rotating mechanism 760 of the lower locking device 750 can open or close the mounting opening 753. For example, by the external force, the rotation mechanism 760 can be rotated in the first direction. Therefore, the mounting opening 753 can be opened. Therefore, the auxiliary frame 571 can be mounted on the mounting opening 753. [ In contrast, when the external force is interrupted, the rotation mechanism 760 can be rotated in the second direction by the restoring force. Therefore, the mounting opening 753 can be closed by the rotation mechanism 760. [ That is, a mounting space in which the auxiliary frame 751 can be mounted may be formed between the mounting opening 753 and the rotation mechanism 760. When the auxiliary frame 571 is mounted in the mounting space, the auxiliary frame 751 can be restrained by the locking portion 765 so as not to be detached from the mounting opening 753.

The auxiliary frame 571 can be fixed by the mounting opening 753 and the rotation mechanism 760.

Hereinafter, a process in which the seat tilting module is mounted on and separated from the standing up chair will be described.

Referring to FIGS. 33 to 35, the seat tilting module 800 may be mounted on the seating portion 550 of the standing-up chair 50. At this time, the lower locking device 750 of the seat tilting module 800 may be mounted on the subframe 571 of the seating part 550. The locking portion 765 of the lower locking device 750 contacts the outer peripheral surface of the auxiliary frame 571 in the process of mounting the lower locking device 750 to the seating portion 550. At this time, the second surface 765b of the lock part slides toward the outside of the apparatus housing 751 while contacting the auxiliary frame 765b. In other words, the locking portion 765 rotates in the first direction. Thus, the mounting opening 753 is opened, and the auxiliary frame 571 can be mounted (or inserted) into the mounting opening 753. [

During the process of mounting the auxiliary frame 571 to the mounting opening 753, a restoring force can be accumulated in the elastic member (see 754 in FIG. 32).

When the auxiliary frame 571 is mounted on the mounting opening 753, the locking portion 765 may be provided with a restoring force of the elastic member 754. [ Therefore, the lock portion 765 rotates in the second direction by the restoring force. The attachment of the auxiliary frame 571 is completed when the auxiliary frame 571 is inserted into the mounting opening 753 and the auxiliary frame 571 is no longer attached to the second surface 765b of the locking part It can be understood that it is not contacted.

Rotation of the locking portion 765 in the second direction can be restricted when the locking portion first surface 765a contacts the outer peripheral surface of the auxiliary frame 571. [ Accordingly, the auxiliary frame 571 can be fixed by the locking portion 765 and the mounting opening 753. [

Referring to FIG. 36, the normal seat tilting module 800 can be separated from the seating portion 550 of the standing up chair 50. For example, when the user provides a force to the connecting member 572 in an upward direction (a direction opposite to the direction of gravity), the connecting member 572 moves inward (second direction) of the apparatus housing 751 . And the locking portion 765 can open the mounting opening 753 while moving outside the device housing 751 (first direction).

According to this operation, the user unlocks the locking means (lower locking device 750) of the seat-tilting module 800 with the single operation of lifting the seat-tilting module 800, Action can be performed together.

As another example, the user may provide a force to press the connecting member 572 to move into the inside of the device housing 751. Accordingly, the connecting member 572 is moved to the inside of the apparatus housing 751, and the locking portion 765 can be moved to the outside of the apparatus housing 751. Therefore, the mounting opening 753 can be opened. When the mounting opening 753 is opened, the lower locking device 750 of the seat tilting module 800 can be separated from the auxiliary frame 571 of the seating part 550.

According to this operation, the direction in which the user applies force primarily changes the direction of the force applied to the inside of the apparatus housing 751 and then upward, and the unlocking of the locking means of the seat- And the separating action of the seat tilting module 800 can be performed together. However, the change in the direction of the force may be insignificant to the user.

On the other hand, in the process of separating the seat tilting module 800 from the seating part 550, a restoring force can be accumulated in the elastic member (see 754 in FIG. 32). When the auxiliary frame 571 is removed from the mounting opening 753, the locking portion 765 may be provided with the restoring force. Accordingly, the locking portion 765 can rotate in the second direction. Here, the auxiliary frame 571 is completely dismounted because the auxiliary frame 571 is completely separated from the mounting opening 753 so that the auxiliary frame 571 is attached to the first surface 765a of the locking part It can be understood that the contact is not made.

The fifth embodiment will be described below.

This embodiment is characterized in that the seat tilting module is applied to the recliner chair as compared to the previous embodiments.

In this embodiment, the same reference numerals as those of the third embodiment are used.

37 is a perspective view of the standing up chair according to the fifth embodiment.

37, the recliner chair 9 according to the fifth embodiment includes a leg portion 910, a seat 920, a backrest portion 930, a pair of

armrest portions

940 and 950, A seat tilting module 800, and a seat control lever 730. [ The reclining chair 9 also includes a backrest rotation module (not shown) for rotating the backrest 930 relative to the seat 920 and a backrest rotation module control lever 980 for controlling the backrest rotation module .

The leg portion 910 can support the seat 920 in a substantially horizontal shape at a predetermined height from below. The legs 910 may be provided in a plurality of frames, and the plurality of frames may be disposed to surround the seat 920. The seat tilting module 800 may be disposed above the leg portion 910.

The seat 920 is configured as a seat for the user to sit comfortably by providing a predetermined cushion. The seat 920 is installed so as to stand upright by a rotary plate 810 (shown in Fig. 15) of the seat tilting module 800 and can be tilted forward, and it can be determined whether or not the seat 920 is upright by a seat control lever have.

The backrest portion 930 is provided so that a user can lean against the backrest, and is similarly configured to provide a predetermined cushion and to lean comfortably. 15) of the seat tilting module 800. The seat back tilting module 800 is mounted on the back of the leg portion 910 in a vertical or rearward tilted state, .

By the backrest rotation module (not shown), the deployment angle of the backrest 930 relative to the seat 920 can be varied. The deployment angle can be understood as an angle formed between one side of the seat 920 and one side of the back 930 adjacent to the seat 920. The deployment angle of the backrest 930 can be controlled stepwise or stepwise by the backrest angle adjustment lever 980. [ In a state in which the backrest angle adjusting lever 980 is pulled, the back angle of the backrest 930 can be varied by an external force. Further, when the backrest angle adjusting lever 960 is in the initial position (the state where it is not pulled), the backrest 930 can maintain the deployment angle.

The

armrests

940 and 950 are provided to allow the user's hands and arms to be placed thereon. The

armrests

940 and 950 are composed of a right armrest 940 and a left armrest 950 on both sides of the seat 920, To be fixed to the seat tilting module 800. In this embodiment, the handle lever of the seat control lever 730, which will be described later, is exposed on the front surface of the right armrest portion 940.

The recliner chair 9 may further include a leg rest 960 and a leg rest control lever (not shown). The leg-rest 960 is provided so that a user can lift the leg, and the leg-rest 960 can be comfortably raised by providing a predetermined cushion. In addition, the leg-rest 960 may be mounted so as to be vertically downward in front of the seat 920. A separate leg-rest rotation module (not shown) is mounted on the reclining chair 9 so as to be rotatable up to the horizontal direction, and the standing-up angle is adjusted by the leg-rest control lever. The leg-rest control lever (not shown) is provided to adjust the standing angle of the leg-rest 960. Likewise, the leg-rest control lever may be installed to expose a part of the handle lever. And the leg-rest control lever can be connected to control the operation of the separate leg-rest rotation module.

The seat tilting module 800 is a module type and is fixed on the leg portion 910 and is configured to mount the seat 920 and the backrest portion 930 and the leg rest. It is possible to implement an upright auxiliary chair which can easily rotate the seat 920 forward. Of course, the seat tilting module 800 can control its operation by the seat control lever 730.

The seat control lever 730 is provided to adjust the standing angle of the seat tilting module 800. The seat control lever 730 is installed on the right arm 940 so that the seat control lever 730 is directly connected to the gas cylinder 840 of the seat tilting module 800 .

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

A seat on which the user can sit;

A pair of armrests provided on both sides of the seat and capable of raising a user's arm;

A link provided at a lower portion of the seat for moving the seat upright and tilting forward;

At least one gas cylinder for providing a predetermined power to the link means; And

And a seat control lever connected to the gas cylinder and controlling operation of the gas cylinder.
The method according to claim 1,

Wherein the link means comprises:

A rotating plate attached to a lower portion of the seat,

A fixing plate horizontally positioned below the rotary plate,

And a pair of four-link links provided on both sides between the rotating plate and the fixed plate and interlocked so that the rotating plate can be tilted forward with respect to the fixed plate.
3. The method of claim 2,

In the four-bar link,

A first link fixed perpendicularly to a front side surface of the rotating plate,

A second link fixed perpendicularly to a rear side surface of the fixing plate,

A third link hingedly connected to a central portion of the first link and an upper portion of the second link,

And a fourth link hingedly connected to a lower portion of the first link and a lower portion of the second link.
The method of claim 3,

The gas cylinder includes:

And a hinge connected to an upper portion of the first link and a lower portion of the second link.
5. The method of claim 4,

The first and second links may include:

Wherein the gas cylinder is provided with a plurality of holes at regular intervals such that the gas cylinders can be selectively hingedly connected.
The method according to claim 1,

A chair body to which the seat is attached and formed by a plurality of frames;

A side frame which is included in the plurality of frames and forms a side surface of the chair body,

And a seat portion coupled to the side frame and forming a lower portion of the chair body,

Wherein the link means is detachably mounted to at least one of the side frame and the seat.
The method according to claim 6,

A supporter to which the link means is mounted and detachably coupled to the side frame;

Further comprising a locking device capable of selectively restraining engagement of the side frame and the supporter such that the supporter is not separated from the side frame.
The method according to claim 6,

Further comprising a lower locking device provided on the link means for releasably securing the link means to the seat portion

The lower locking device comprises:

A mounting housing having a mounting opening through which the seating portion can be inserted,

And a rotating mechanism rotatably coupled to the mounting housing, the rotating mechanism selectively opening and closing the mounting opening.
9. The method of claim 8,

The lower locking device further includes a connecting member for receiving an external force that moves at least upward and transmitting the external force to the rotating mechanism,

Wherein the rotating mechanism is adapted to open the mounting opening by switching the external force to rotational movement of a predetermined center point.
3. The method of claim 2,

Further comprising an upstanding angle adjusting device coupled to the fixed plate and the gas cylinder, the upstanding angle adjusting device setting the standing angle in which the seat is upright and tilted forward,

Wherein the rising angle adjusting device comprises:

And adjusts the standing angle formed between the fixed plate and the gas cylinder by varying the position of the gas cylinder.
11. The method of claim 10,

Wherein the fixing plate is provided with an opening, and the rising angle adjusting device is inserted into the opening.
11. The method of claim 10,

Wherein the rising angle adjusting device comprises:

An angle adjusting case provided on the fixing plate,

A first rotating member coupled to the gas cylinder and having a first rotational center for rotation of the gas cylinder,

And a second rotary member spaced apart from the first rotation center and having a second rotation center for rotation of the gas cylinder.
11. The method of claim 10,

Wherein the rising angle adjusting device comprises:

A rotation opening formed to be long in the angle adjusting case in a direction crossing a virtual line extending in the longitudinal direction of the fixing plate;

A first rotation shaft passing through the rotation opening and the first rotation member,

A second rotating shaft passing through the angle adjusting case and the second rotating member,

And an upstanding angle adjusting lever connected to the second rotating shaft for manipulating the rotation of the second rotating shaft.
14. The method of claim 13,

Wherein when the second rotation shaft is rotated by the operation of the rising angle adjustment lever, the first rotation axis is varied in the rotation opening.
14. The method of claim 13,

Wherein the angle adjusting case includes a plurality of engagement grooves formed in the rotation opening,

Wherein the first rotation axis is engaged with any one of the plurality of engagement grooves to fix a rising angle formed between the gas cylinder and the fixed plate.
10. The method of claim 9,

A chair body on which the seat is mounted; And

Further comprising a plurality of wheels mounted on the chair body,

A seat tilting module is disposed between the seat and the plurality of wheels,

Wherein the seat tilting module includes the link means, the gas cylinder, and the standing angle adjusting device.
17. The method of claim 16,

Further comprising a supporter on which the seat tilting module is mounted,

And the supporter is detachably mounted on the chair body.
The method according to claim 1,

A legrest provided on a front lower side of the seat and capable of raising a user's leg;

A pair of support springs provided below the seat and the leg cradle and supporting the leg cradle in a horizontal direction like the seat;

A brake means for stopping the movement of the support springs; And

And a leg rest control lever connected to the brake means and controlling the operation of the brake means.
A seat on which the user can sit;

A link provided at a lower portion of the seat for moving the seat upright and tilting forward;

A gas cylinder for providing a predetermined power to the link means; And

A seat control lever connected to the gas cylinder and controlling the operation of the gas cylinder,

Wherein the link means comprises:

A rotating plate attached to a lower portion of the seat,

A fixing plate horizontally positioned below the rotary plate,

And a four-bar link provided between the rotating plate and the fixed plate and interlocking the rotating plate so as to be tilted forward with respect to the fixed plate,

Wherein the rotating plate is provided with a plurality of weight measuring sensors capable of measuring the weight of the user.
A seat on which a user can sit;

A plurality of frames for supporting the sheet;

A plurality of wheels disposed under the seat and rotatably mounted on the plurality of frames;

Link means disposed between the seat and the plurality of wheels for driving the seat to stand up and tilt forward;

A gas cylinder for providing power to the link means;

An upstanding angle regulating device connected to the gas cylinder and for setting an angle at which the seat stands up and tilts forward; And

And a seat control lever coupled to the gas cylinder and for controlling operation of the gas cylinder.