KR101705046B1 - transformable wheelchair for free position - Google Patents

Abstract

The present invention relates to a variable-type wheelchair capable of actively responding, comprising a frame portion, a seat plate portion connected to the frame portion by a hinge block, a backrest portion connected to the seat plate portion, a seat back portion connecting the frame portion and the seat plate portion, And a backrest lever connected to the left and right seatbacks when the support force of the left seatback cushion is released, the backrest connected to the left and right seatbacks can be moved with respect to the hinge block.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a variable-

The present invention is intended to prevent physical deformations such as stiffness, rigidity and constriction that can be caused by pathological reflexes such as static posture or hypersensitivity due to the use of a wheelchair, and ultimately to enhance social participation and quality of life The present invention relates to a wheelchair capable of improving the performance of a wheelchair.

A wheelchair is a chair in which a wheel is installed so that a person who can not move his / her leg freely moves. It is a mobile device that people with disabilities use to participate in social life, work and leisure.

The structure of the wheelchair includes a frame, a seat, a large wheel, a caster, a hand rim, a brake, a back rest, an arm rest, A foot rest, and the like.

There are two types of wheelchairs: manual wheelchairs and electric wheelchairs. There are outdoor and indoor wheelchairs depending on the application. Other special-purpose sporty wheelchairs, dedicated wheelchairs for bodybuilders, and one-handed wheelchairs.

The backrest was fixed to the wheelchair, so that the patient always had to stand upright, and it was impossible to lie down comfortably on the backrest.

A user who can not freely control muscle contraction and relaxation due to a brain lesion in such a wheelchair may develop a stretching phenomenon and may be seriously injured such as a fracture, pressure ulcer, fatigue and secondary physical damage.

Registered Utility Model No. 20-0311341 (2003.04.10)

The present invention provides a variable wheelchair capable of actively responding to physical characteristics and situations of a user.

The variable-type wheelchair capable of actively responding according to an embodiment of the present invention includes a frame portion, a seat plate portion connected to the frame portion by a hinge block, a backrest portion connected to the seat plate portion, a seat portion connecting the frame portion and the seat plate portion, And the seat back portion connected to the seat plate portion and the seat plate portion moves based on the hinge block when the support force of the seat plate cushion is released.

The variable-type wheelchair capable of actively responding may further include a left-side plate guide portion connected to the left-side plate portion, contacting the frame portion, and guiding the movement of the left-side plate portion and defining a range of movement.

Wherein the seat plate guide portion is disposed on a lower side of the seat plate portion, and is disposed on the frame portion and includes a guide rail having a predetermined path, a support rod connected to the seat plate portion, And a roller capable of moving along the guide rail.

Wherein the path of the guide rail has a predetermined diameter and the roller is movable and the center of the diameter is connected to the first curved portion which is the hinge block and the first curved portion and the diameter is larger than the diameter of the first curved portion And may include a second curved portion which is small and can be engaged with the roller.

The variable-type wheelchair capable of actively responding may further include a backlocking portion coupled to the backrest portion so as to be caught by the backboard portion and fixing the backrest portion so as not to be rotated.

Wherein the backrest locking portion comprises a casing coupled to the backrest portion, a shaft penetrating the casing to be engaged with the left plate portion, and a resilient portion disposed inside the casing, the elasticity imparting an elastic force so that the shaft is caught by the left plate portion Member.

The variable wheelchair capable of actively responding may further include a backrest rotation adjusting unit for supporting the backrest to rotate and restricting the rotation range.

Wherein the rotation regulating portion includes a pin guide block having one side connected to the backrest portion and formed in a curved shape rearward of the back portion, a position fixing pin connected to the seat plate portion and contacting the other side of the pin guide block, And an elastic member for applying an elastic force to the position fixing pin such that the pin contacts the pin guide block.

The rotation adjusting unit may further include a stopper block connected to the pin guide block and engaged with the guide rail when the backrest is rotated.

The seat plate may include a slide rail hinged to the frame and connected to the backrest, and a slide panel movably disposed on the slide rail and on which the seat can be placed.

The seat plate may further include a return spring disposed between the slide rail and the slide panel and applying an elastic force in a direction in which the slide panel returns.

The variable wheelchair capable of actively responding may further include a foot rest portion positioned in front of the frame portion and connected to the seat portion.

The footrest includes a first bar connected to the slide rail, a second bar foldably connected to the first bar, a mobile block movably disposed on the second bar, a footrest movably disposed on the mobile block, And a footstep buffer connecting the first footstep and the footstep, wherein the footstep buffer can pull the footstep toward the frame portion.

According to the embodiment of the present invention, the support force of the seat cushioning buffer is released by the operation of the seat cushion lever in the user's over-prone reaction, and the backrest and the footrest connected to the seat cushion and the seat cushion can support the body deployed by the hypersensitive reaction . The variable wheelchair which can actively cope with this can actively substitute for the physical characteristics and situation of the user.

According to one embodiment of the present invention, when the seat plate, the backrest, and the footrest move abruptly without any resistance or buffering during a hypersensitive reaction of the wheelchair user, the user's posture may be rapidly changed, You can give a bunch. However, since the backrest, the seat plate, and the foot rest part are moved slowly by the respective cushions of the variable wheelchair which can actively cope with, it is possible to restrict sudden movement during the hypersensitivity reaction of the user, thereby preventing the fall and the elements can do.

According to an embodiment of the present invention, the backrest can be tilted back, the footrest can move forward, and the seat plate, backrest, and footrest can move at the same time, Can be moved to some extent when the seat plate, the backrest, and the footrest are moved. Accordingly, in the case of a user who is able to actively cope with maintaining a static posture and a user who can not freely control the contraction and relaxation of the muscles, the body can be moved by the seat plate, the backrest, and the footrest, It can prevent the musculoskeletal stiffness, rigidity, construction, fracture caused by extensor stretching, pressure sores, increased fatigue, etc., which can occur because the body can not move while sitting on a variable wheelchair.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a variable wheelchair capable of actively responding in accordance with one embodiment of the present invention.
Fig. 2 is a perspective view showing a state in which the variable-type wheelchair capable of actively responding in Fig. 1 is viewed from the rear; Fig.
Fig. 3 is a side view showing the variable-type wheelchair capable of actively responding as shown in Fig. 1. Fig.
4 is an enlarged view of the seat panel shown in Fig.
Fig. 5 is an operational view showing a state in which the backrest is inclined as shown in Fig. 3;
6 is a cross-sectional view of the backrest angle adjusting portion of FIG. 5;
Fig. 7 shows a back locking part shown in Fig. 2, in which a) shows a state in which the backrest frame is raised, and b) shows a state in which the backrest frame is bent.
Fig. 8 is an operational view showing the state in which the seat plate shown in Fig. 3 is inclined. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated with like reference numerals throughout the specification. The following description means the front of a variable wheelchair capable of actively responding, and the rear means the rear of a variable wheelchair capable of actively responding.

A variable wheelchair capable of actively responding according to an embodiment of the present invention will now be described with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a perspective view of a variable wheelchair capable of actively responding in accordance with an embodiment of the present invention, and FIG. 2 is a perspective view showing a rear wheel of a variable wheelchair capable of actively responding in FIG.

1 and 2, the variable wheelchair 1 capable of actively responding to the present embodiment is capable of freely adjusting the user's muscle relaxation, and includes a frame 10, a seat plate 30, A seat back cushion 40, a seat back cushion 60, a seat cushion lever 61, a seat cushion guide 70, a backrest rotation regulating portion 53 and a backrest locking portion 54.

The frame portion 10 includes a first side frame 11, a second side frame 12, a lower connecting bar 13, and an upper connecting bar 14.

The first side frame 11 and the second side frame 12 form a single frame and are spaced apart at predetermined intervals. The width of the variable wheelchair 1 capable of actively responding to the distance between the first side frame 11 and the second side frame 12 can be determined. The front side portions of the first side frame 11 and the second side frame 12 extend in directions away from each other and the steering wheel 15 is engaged. A large wheel 16 is coupled to a rear portion of the first side frame 11 and the second side frame 12. Although not shown in the drawings, the large wheel 16 may be power-connected to a driving device (not shown) such as a motor, an engine, or the like. A brake (not shown) is connected to the large wheel 16 so that the variable wheelchair 1 capable of actively braking can be braked.

An armrest 18 is coupled to the upper side of the first side frame 11 and the second side frame 12, respectively. The armrests 18 can be positioned according to the user's body.

The lower connecting bars 13 are arranged between the lower side of the first side frame 11 and the lower side frame 12 and are arranged at intervals along the longitudinal direction. The lower connection bars 13 are also arranged in the vertical direction. The lower side of the first side frame 11 and the lower side frame 12 are connected together by the lower connecting bar 13. The lower connecting bar 13 located at the rear end of the first side frame 11 and the second side frame 12 is coupled with an auxiliary wheel 17 for preventing the variable wheelchair, .

The upper connecting bar 14 is disposed between the upper side of the first side frame 11 and the upper side of the second side frame 12 and connects the upper side of the first side frame 11 and the upper side of the second side frame 12 do. The upper connection bar 14 is located at the center of the upper side of the first side frame 11 and the second side frame 12. However, it can be located in the front.

Next, the seat portion will be described with reference to Figs. 3 and 4. Fig.

Fig. 3 is a side view showing the variable-type wheelchair capable of actively responding as shown in Fig. 1, and Fig. 4 is an enlarged view of the seat panel shown in Fig.

3 and 4, the seat plate 30 is movable forward from the frame portion 10 and supports the user's buttocks. The slide rail 31, the slide panel 34, the seat plate 37, And a return spring 36.

The slide rail 31 is disposed on the frame portion 10 and has a rail groove 311 formed along the longitudinal direction on the upper surface thereof and a stopper 311 is formed on both sides of the upper surface of the slide rail 31, 32 are coupled.

A hinge block 33 connected to the upper connecting bar 14 is coupled to the lower surface of the slide rail 31. The position of the hinge block 33 is coupled to the rear side with respect to the longitudinal center of the slide rail 31. The slide rail 31 can be rotated with respect to the hinge block 33. Although two slide rails 31 are shown in the drawing, one slide rail 31 may be used depending on the width.

And a connecting portion 38 to which the backrest portion 50 is rotatably coupled is disposed on the rear side of the slide rail 31. [ The connecting portion 38 includes a connecting frame 381 connected to the slide rail 31 and a connecting bracket 382 vertically protruding upward from both sides of the upper surface of the connecting frame 381.

The slide panel 34 is disposed on the slide rail 31. A seat plate 37 having a cushion is detachably coupled to the upper surface thereof and a rail block 35 coupled to the rail groove 311 Respectively. The slide panel 34 can be slid within the range of the rail groove 311 by the rail block 35. Thus, the slide panel 34 can be moved forward on the slide rail 31 or on the slide rail 31 in front (backward). When the rail block 35 is caught by the stopper 32, the slide panel 34 can stop.

The return spring 36 is disposed between the stopper 32 and the rail block 35 and exerts an elastic force so that the slide rail 31 moved forward can move backward. Therefore, when the slide panel 34 is moved forward, a large force must be exerted by the user. However, when returning to the original state, the elasticity of the return spring 36 makes it possible to return easily with less force. In addition, the return spring 36 prevents the slide panel 34 from moving forward when the user is not sitting on the seat board 30. [

The user of the adjustable wheelchair 1 capable of actively responding by the movable slide panel 34 can move freely forward and backward while sitting on the seat panel 37. [

Next, the foot rest will be described with reference to Figs. 1 and 2 again.

1 and 2, the foot rest portion 40 is positioned in front of the frame portion 10 and can be put on the foot by the user who is seated on the foot rest 30. The first and second bars 41, A second bar 42, a moving block 44, a footing 45, and a footstep buffer 47. The first bar 41, the second bar 42, the moving block 44, the footrest 45 and the footstep bufferers 47 are formed as a pair and disposed on both sides of the front side of the frame portion 10, respectively.

The first bar 41 and the second bar 42 are formed to have predetermined lengths and are connected to each other by a hinge 43 so as to be foldable. The first bar 41 is coupled to the front side of the slide rail 31 and the second bar 42 is movable with respect to the hinge 43. The second bar 42 can maintain a vertical state with respect to the first bar 41.

The moving block 44 is movably coupled to the second bar 42. The position where the moving block 44 is coupled to the second bar 42 can be set according to the leg length of the user. The movable block 44 is movably coupled with a rod 46 of a foot 45 on which a user can put his or her foot.

The footrest absorber 47 is formed in a gas spring structure. The housing of the footstep buffer 47 is hinged to the first bar 41 and the exposed rod in the housing is hinged to the moving block 44. The rod of the foot buffer absorber 47 is drawn into the inside of the housing so that the moving block 44 is pulled in the direction of the left plate 30. So that the foot plate 45 can be pulled toward the seat plate portion 30.

When the user sitting on the seat plate 30 abruptly undergoes an excessive reaction in the state of putting the foot on the foot plate 45, the second bar 42 can actively respond to the hinge 43 along the foot of the user The footrest 45 can be moved along the user's foot while the rod of the footstep buffer 47 is pulled out from the inside of the housing. Thus, the foot of the user can be prevented from being separated from the foot plate 45.

The second bar 42 is prevented from being abruptly moved by the buffering force of the foot buffer absorber 47 when the second bar 42 is moved so that abrupt movement of the user can be restricted. When the user's extreme overaction reaction is completed, the rod of the foot buffer absorber 47 is drawn into the housing and the second bar 42 moves slowly in the direction of the frame part 10, so that the impact transmitted to the patient can be minimized. However, the foot rest portion 40 may be omitted.

Next, the backrest will be described with reference to Figs. 2, 5, and 6. Fig.

FIG. 5 is an operational view showing a state in which the backrest portion shown in FIG. 3 is inclined, and FIG. 6 is a sectional view showing the backrest angle adjusting portion of FIG.

2, 5, and 6, the backrest portion 50 is located behind the left seat panel 37 to support the back of the user sitting on the seat panel 30, (52).

The backrest frame 51 has a predetermined width. Here, the width of the backrest frame 51 is equal to the width of the frame portion 10. The upper side of the backrest frame 51 is bent backward. The bent part can be an adjustable wheelchair capable of actively responding (1) a handle that can be held by the user's caregiver. A brake lever 20 is coupled to the rear of the backrest frame 51 so that the protector can operate the brake. The brake lever (20) can be coupled to the armrest (18).

In front of the backrest frame 51 is detachably coupled a backrest seat 52 which can provide comfort to the user. On the upper side of the backrest frame 51, a headrest portion 55 capable of supporting the user's head is movably coupled.

The backrest frame 51 is positioned behind the seat panel 37 and both lower sides thereof are hingedly connected to the side surfaces of the connecting brackets 382. The backrest frame 51 maintains a state in which the upper surface of the seat panel 37 is viewed at 0 degree with the hinge as a reference and is normally set at 90 to 110 degrees. However, when the user sitting on the seat board 30 is turned backward, the backrest frame 51 can be turned back by about 30 to 45 degrees.

The backrest rotation adjusting portion 53 adjusts the rotation angle of the backrest portion 50 and includes a pin guide block 531, a fixed pin block 532, a fixing pin 533, an elastic member 534, 535).

The pin guide blocks 531 are formed as a pair and are spaced apart. One side of the pin guide block 531 is connected to the backrest frame 51 via a connecting bar 536. [ The other side of the pin guide block 531 protrudes in the direction of the connecting brake 381. The pin guide block 531 is formed in a "C" shape when viewed from the front. In the pin guide block 531, setting holes 531a are formed at intervals along the longitudinal direction.

One side of the fixed pin block 532 is hinged to the end of the connection frame 381 and the other side is opposite to the front side of the pin guide block 531.

The fixing pin 533 is disposed on the other side of the fixed pin block 532. One side of the fixing pin 533 is located outside the fixing pin block 532 and is formed in a structure that can be held by the user. The other side of the fixing pin 533 passes through the fixing pin block 532 and is inserted into any one of the plurality of setting grooves 531a. When the user pulls one side of the fixing pin 533, the other side can escape from the setting groove 531a, and the backrest frame 51 can be rotated or raised based on the hinge.

The elastic member 534 is located inside the fixed pin block 532 and applies an elastic force in a direction in which the other side of the fixing pin 533 is inserted into the setting groove 531a. When the user extends the fixing pin 533, the elastic member 534 can be compressed.

The stopper block 535 is connected to the pin guide block 531. The stopper block 535 can be brought into contact with the guide rail 71 when the backrest frame 51 is turned backward. So that the backrest frame 51 is no longer tilted backward.

The angle at which the receiving frame 51 is tilted can be adjusted stepwise according to the position of the setting groove 531a where the fixing pin 533 is caught. However, the backrest rotation adjusting portion 53 may be omitted.

The back locking unit will be described with reference to Fig.

Fig. 7 is a perspective view of the backrest locking part shown in Fig. 2, in which a) is a raised state of the backrest frame, and b) is a perspective view of the backrest frame.

Referring to Fig. 7, the backrest locking portion 54 prevents the backrest frame 51 from being tilted back behind the movable wheelchair 1 capable of actively responding to the backrest locking portion 54. The backrest locking portion 54 includes a casing 541, a shaft 542 and an elastic member 543 .

The casing 541 faces the front surface of the connecting bracket 382 and is coupled to the backrest frame 51.

The shaft 542 has a predetermined length and one side protrudes to the outside of the casing 542 for the user to hold and the other side is inserted into the fixing hole 382a formed in the connecting bracket 382 through the casing 541 . So that the backrest frame 51 can be kept standing (see Fig. 7 (a)). When the shaft 542 is pulled, the other side is released from the fixing hole 382a, so that the backrest frame 51 can be tilted with respect to the hinge (see Fig. 7 (b)).

The elastic member 543 is disposed inside the casing 541 and imparts an elastic force such that one side of the shaft 542 is inserted into the fixing hole 382a. When the shaft 542 is pulled, the elastic member 543 can be compressed.

1, 3 and 8, a description will be given of the shock absorber 60 for a seat.

8 is an operation diagram showing a state in which the seat plate shown in Fig. 3 is inclined.

1, 3 and 8, the seat cushioning cushion 60 is formed in a gas spring structure and is disposed between the first side frame 11 and the second side frame 12. As shown in Fig. The housing of the seat buffer cushion 60 is hinged to the lower connecting bar 13 located at the center of the lower connecting bars 13 and the rod 46 is hinged to the lower face of the connecting frame 381.

The seat cushion 60 is connected to a seat cushion lever 61 coupled to the back of the backrest frame 51. The seat plate lever 61 can be coupled to the armrest 18. When the left plate lever 61 of the left plate 30 is pulled, the rod can be drawn into the housing. When the seat plate lever 61 is not pulled, the rod is not drawn into the housing.

The user sitting on the seat plate 30 can concentrate behind the variable wheelchair 1 whose weight can actively respond when the body is unfolded while undergoing an hypersensitive reaction. At this time, when the seat plate lever 61 is pulled, the rod is drawn into the housing and the seat plate portion 30 is rotated with respect to the hinge block 33. At this time, the front side of the seat plate 30 is raised with respect to the hinge block 33, and the rear side is lowered. That is, when the imaginary line perpendicular to the front side of the upper connecting bar 14 is rotated 0 degrees with respect to the hinge block 33, the left side plate 30 can rotate within a range of approximately 0 to 60 degrees . When the loading of the rod is completed, the seat plate 30 is no longer rotated with respect to the hinge block 33.

The backrest portion 50 and the footrest portion 40 connected to the seat plate portion 30 also move together with the seat plate portion 30 when the seat plate portion 30 rotates. The footrest 45 of the foot rest 40 moves along the footboard 30 while moving forward along the foot of the user. Thus, when the seat plate portion 30 rotates, the user's feet do not come off from the foot rest portion 40.

The backrest 50 and the footrest 40 move along the seat plate 30 so that the user who has undergone the hypersensitive reaction can be spread out on the variable wheelchair 1 capable of actively responding. The variable wheelchair 1 capable of actively responding thereto can actively replace the user according to the physical characteristics and the situation of the user while the user is sitting on the variable wheelchair 1 capable of actively responding.

When the user pushes the seat plate lever 61 and pushes the backrest frame 51 forward, the rod is drawn out of the housing and the seat plate 30 can return to the original state. The backrest portion 50 and the footrest mounting portion 40 can also be returned to the circular state by returning the seat plate portion 30. [

3 and 8, the guide plate portion 70 is disposed between the first side frame 11 and the second side frame 12 and guides the rotation of the left plate portion 30, So that the seat plate portion 30 does not deviate from a certain range. The seat panel guide portion 70 includes a guide rail 71, a support table 73, and a roller 72.

The guide rail 71 has a predetermined length and has a predetermined path. One side of the guide rail 71 is vertically connected to the upper side of the lower connecting bar 13 located at the center among the lower connecting bars 13 and the other side is connected to the lower connecting bar 13 located at the rear of the lower connecting bars 13 And is connected vertically to the upper side of the upper case 13.

The guide rail 71 has one vertical portion 711 connected to the central lower connecting bar 13, another vertical portion 712 connected to the rear lower connecting bar 13 and one vertical portion 711 and the other vertical portion 712 ). The length of the other vertical portion 712 is longer than the length of the one vertical portion 711.

The path of the guide rail 71 includes a first curved portion 713 and a second curved portion 714.

And is formed from the upper side of one vertical portion 711 of the first curved portion 713 to a predetermined point. The first curved portion 713 has a predetermined diameter. The center of the diameter of the first curved portion 713 is the hinge block 33.

The second curved portion 714 is connected to the first curved portion 713 and the upper side of the other vertical portion 712. The second curved portion 714 includes a first section 714a having a diameter smaller than the diameter of the first curved section 713 and a second section 714b connecting the first section 714a and the other vertical section 712 ). The center of the diameter of the first section 714a is away from the center of the diameter of the first curved section 713.

The support base 73 has a predetermined length and is disposed on the guide rail 71 so that the upper side thereof is connected to the rear side of the connection frame 381 and the lower side thereof faces the guide rail 71.

The roller 72 is rotatably coupled to the lower side of the support table 73 and the outer circumferential surface thereof is in contact with the guide rail 71. The roller 72 may be made of rubber, plastic, metal, or the like. The roller 72 can guide the rotation of the seat plate 30 while moving along the first curved line 713 when the seat plate 30 rotates about the hinge block 33. [ The second curved portion 714 is located inside the movement path of the roller 72. [ The roller 72 moves along the first curved portion 713 and reaches the second curved portion 714 when the rotated seat portion 30 returns to the original state, The movement is stopped by the first section 714a. At this time, the seat plate portion 30 stops rotating in the returning direction no longer. And the rod of the left plate shock absorber 60 is able to support the left plate part 30 which has been drawn out to the maximum from the housing and stopped rotating.

Although the footrest buffer 47, the backrest rotation control unit 53 and the left seat cushioning unit 60 described above are shown as two in the drawings, the number may be varied depending on the size of the variable-type wheelchair 1 capable of actively responding have. Although the footstep cushioning device 47, the backrest rotation adjusting device 53 and the seat cushioning device 60 are referred to as gas springs, they may be constituted by gas cylinders, fluid cylinders, and the like. Therefore, the structure of the gas spring, the gas cylinder, the fluid cylinder, and the like can be applied to the footrest buffer 47, the backrest rotation regulating part 53 and the seat buffer cushion 60, and a detailed description of the structure is omitted .

Hereinafter, the operation of the variable-type wheelchair capable of actively responding to the user's sitting-posture dynamic movement according to the present embodiment will be described again with reference to FIGS. 1 to 8. FIG.

The user places his / her foot on the seat seating portion 40 and leans his or her back to the backrest portion 50 in the seat board portion 30. [ If the patient suddenly stretches out suddenly due to hypersensitivity reaction, the weight of the user can be concentrated behind the variable wheelchair (1) which can actively respond. At this time, when the left plate lever 61 is pulled, the rod of the left plate buffer 60 is drawn into the housing, and the supporting force of the left plate portion 30 can be released. The seat plate portion 30 is rotated backward with respect to the hinge block 33. [ The roller 72 of the left plate guide portion 70 moves along the first curved portion 713 to guide the left plate portion 30. At this time, the backrest 50 and the footrest 40 move together along the seat 30 so that the backrest 50 moves backward and the footrest 40 supports the body which is lifted and extended. The foot 45 is moved along the foot of the user by the moving second bar 42, so that the foot of the user does not come off from the foot 45.

When the backrest 50 is pushed forward with the left seat lever 61 pulled out, the seat back 30 connected to the backrest 50 returns to its original state and the left seat of the left seat cushion 60 The rod can be withdrawn from the housing. The roller 72 of the left plate guide portion 70 again moves the first curved portion 713 toward the second curved portion 714 to guide the movement of the left plate portion 30. The roller 72 reaches the second curved portion 714 and the roller 72 is caught by the second curved portion 714 so that the return of the left plate 30 is completed and the left plate cushion 60 reaches the left plate 30 ) Can be cushioned and supported. The footrest 45 of the footrest mounting portion 40 is returned to the original state by the footrest cushioning 47.

On the other hand, if the backrest portion 50 is to be pushed backward while the seat back portion 30 is returned, the backrest portion 50 can be tilted backward in a state where the backrest locking portion 54 is unlocked. The moving seat plate portion 30 does not move abruptly by the seat plate shock absorber 60. If the seat plate 30 moves abruptly, the user's posture may change suddenly, resulting in falling in the wheelchair or imposing a strain on the body joint. However, the backrest 50, the seat plate 30, and the foot rest 40 are moved slowly by the respective shock absorbers of the variable-type wheelchair capable of actively responding, thereby preventing the fall and the elements that may damage the body joints have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

1: Variable wheelchair capable of actively responding 10: Frame part
11: first side frame 12: second side frame
13: Lower connection bar 14: Upper connection bar
15: steering wheel 16: large wheel
17: Auxiliary wheel 18: Armrest
20: Brake lever 30:
31: slide rail 311: rail groove
32: stopper 33: hinge block
34: slide panel 35: rail block
36: return spring 37: seat plate
38: connection 381: connection frame
382: connection bracket 40: foot rest part
41: first bar 42: second bar
43: hinge 44: moving block
45: foot plate 46: rod
47: foot restrainer 50: backrest
51: back frame 511: insertion groove
52: a backrest seat 53: a backrest rotation adjusting section
531: Pin guide block 531a: Setting hole
532: Fixing pin block 533: Fixing pin
534: elastic member 535: stopper block
54: backrest locking portion 541: casing
542: shaft 543: elastic member
55: head restraint part 60: seat restrainer
61: seat plate lever 70: seat plate guide portion
71: guide rail 711: one vertical portion
712: the other vertical part 713: the first curved part
714: second curved portion 714a: first section
741b: second section 72: roller
73: Support

Claims (11)

A frame part; A left plate part connected to the frame part by a hinge block; A backrest connected to the seat plate; A seat cushion which connects the frame portion and the seat cushion portion and supports the seat cushion portion; And a left plate lever connected to the left plate buffer and releasing the supporting force,
When the supporting force of the seat cushioning buffer is released, the backrest portion connected to the seat cushion and the seat cushion moves on the basis of the hinge block,
And a backrest rotation regulating portion for supporting the rotating backrest portion and restricting the rotation range thereof,
Wherein the backrest rotation adjusting unit comprises:
A pin guide block having one side connected to the backrest part and formed in a curved shape behind the backrest part;
A fixing pin connected to the seat plate and contacting the other side of the pin guide block; And
And an elastic member for applying an elastic force to the fixing pin such that the fixing pin contacts the pin guide block. The method of claim 1,
Further comprising: a left plate guide portion connected to the left plate portion to contact the frame portion and to guide the movement of the left plate portion and to define a range of movement. 3. The method of claim 2,
Wherein the left-hand guide portion is disposed on a lower side of the left-
A guide rail disposed in the frame portion and having a predetermined path,
A support plate connected to the seat plate portion,
A roller rotatably connected to the support and movable along the guide rail,
Containing
Variable wheelchair with active response. 4. The method of claim 3,
The path of the guide rails
A first curved portion having a predetermined diameter and the center of the diameter being the hinge block and the roller being movable;
A second curved portion connected to the first curved portion, the diameter of which is smaller than the diameter of the first curved portion,
Containing
Variable wheelchair with active response. 4. The method of claim 3,
Further comprising a backrest locking portion coupled to the backrest portion so as to be hung on the left side plate portion and to fix the backrest portion so as not to rotate. The method of claim 5,
Wherein the backrest locking portion comprises:
A casing coupled to the backrest,
A shaft penetrating through the casing and engageable with the seat plate; and
An elastic member which is disposed inside the casing and which applies an elastic force so that the shaft is caught by the seat plate,
Containing
Variable wheelchair with active response. delete delete The method of claim 1,
Wherein the backrest rotation adjusting unit comprises:
A stopper block connected to the pin guide block and engaged with the guide rail when the backrest is rotated,
Further comprising
Variable wheelchair with active response. The method of claim 1,
The left-
A slide rail hinged to the frame portion and connected to the backrest portion,
A slide rail movably disposed on the slide rail,
Containing
Variable wheelchair with active response. 11. The method of claim 10,
The left-
A return spring which is disposed between the slide rail and the slide panel and applies an elastic force in a direction in which the slide panel returns,
Wherein the wheelchair includes:

Images