CN113101152B - Anti-falling sitting and standing dual-purpose rollator - Google Patents
Anti-falling sitting and standing dual-purpose rollator Download PDFInfo
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- CN113101152B CN113101152B CN202110481697.9A CN202110481697A CN113101152B CN 113101152 B CN113101152 B CN 113101152B CN 202110481697 A CN202110481697 A CN 202110481697A CN 113101152 B CN113101152 B CN 113101152B
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- 230000007246 mechanism Effects 0.000 claims abstract description 169
- 230000005484 gravity Effects 0.000 claims abstract description 16
- 230000036544 posture Effects 0.000 claims description 33
- 210000001217 buttock Anatomy 0.000 claims description 6
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- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 210000003127 knee Anatomy 0.000 description 13
- 238000013461 design Methods 0.000 description 4
- 210000003141 lower extremity Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
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- 210000002414 leg Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/04—Wheeled walking aids for patients or disabled persons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
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Abstract
The invention provides a dual-purpose rollator for preventing falling and sitting, which comprises: a support mechanism; a seat mechanism; the lifting mechanism is respectively hinged with the supporting mechanism and the seat mechanism to drive the supporting mechanism and the seat mechanism to move up and down so as to switch the sitting posture; a base; the base comprises a fixed seat and a movable seat; the fixing seat is used for fixing the lifting mechanism; the seat mechanism is connected with the movable seat through the pushing mechanism, and when the seat mechanism ascends or descends, the pushing mechanism drives the movable seat to move along the front-back direction of the vehicle body, so that the area of the base is expanded or reduced. Lifting of the supporting mechanism and the seat mechanism is realized through the lifting mechanism, so that the sitting posture is switched; the seat mechanism enables the pushing mechanism to move in the lifting process, and then the movable seat can be driven to move along the front-back direction of the vehicle body, the area of the base is expanded or reduced, so that the gravity center of a user falls in the base to keep the balance of the vehicle body carrying the human body, and the human body is prevented from falling down due to backward tilting.
Description
Technical Field
The invention relates to the field of nursing auxiliary equipment, in particular to a dual-purpose rollator for preventing falling and sitting.
Background
With the continuous development of technology and the increase of lower limb incapacitation population, the performance and the variety of the walking aid are continuously improved and increased, and the walking aid for the lower limb incapacitation population is developed from a sitting walker to a standing walker. Compared with a sitting walker, the standing walker effectively prevents the problem that bedsores and muscular atrophy are easy to occur when a user sits on a wheelchair for a long time, and has a certain rehabilitation effect.
The standing walker assists the user to sit and stand through elevating system and seat mechanism and switches, but because the user is when the position of gravity center front and back is different when the position of sitting is used to the walker and is used to stand, in order to prevent when the position of sitting is used the gravity center back and move the walker and lean backward, cause secondary injury, the walker on the market can add a large amount of counter weights at the automobile body head, generally can add 80kg-100kg to balanced people sits back the back of gravity center, just so lead to whole car weight too big, inconvenient use and transportation, and the extravagant energy. In addition, the chassis is made long for ensuring stability, so that the turning radius of the vehicle body is increased, and the flexibility of the walker in turning and other actions in a house or in some narrow spaces is seriously affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the anti-falling dual-purpose rollator capable of being used for sitting and standing, the purposes are diversified, and the area of a base is adjusted along with the rollator body when the sitting and standing postures are switched, so that the gravity center of a user can be ensured to fall on the base, and the falling caused by backward tilting is prevented.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The invention provides a dual-purpose rollator for preventing falling and sitting, which comprises a rollator body; the rollator body comprises:
the support mechanism is used for supporting the upper limbs of the human body;
a seat mechanism for supporting the buttocks of a human body;
the lifting mechanism is respectively hinged with the supporting mechanism and the seat mechanism so as to drive the supporting mechanism and the seat mechanism to move up and down to switch the sitting posture;
a base provided with a plurality of travelling wheels; the base comprises a fixed seat and a movable seat; the fixed seat is used for fixing the lifting mechanism; the seat mechanism is connected with the movable seat through a pushing mechanism;
when the seat mechanism ascends or descends, the pushing mechanism drives the movable seat to move along the front-back direction of the vehicle body so as to expand or reduce the area of the base, and the gravity center of a user is positioned in the vertical projection area of the base when the seat is in two postures.
Preferably, the device further comprises a frame fixed on the fixed seat; the lifting mechanism is hinged on the frame.
Preferably, the lifting mechanism comprises a driving piece, a first connecting rod and a second connecting rod which are arranged in parallel up and down in the same longitudinal plane and have the same length; both ends of the first connecting rod and both ends of the second connecting rod are respectively hinged below the supporting mechanism and the frame; two ends of the driving piece are respectively hinged to the second connecting rod and the frame;
the driving piece is lifted to drive the first connecting rod and the second connecting rod to synchronously lift so as to realize the lifting of the supporting mechanism.
Preferably, the bottom of the supporting mechanism is provided with a first right-angle connecting piece; the upper plate of the first right-angle connecting piece is horizontally arranged; the upper plate and the lower plate of the first right-angle connecting piece are respectively hinged to one ends of the first connecting rod and the second connecting rod.
Preferably, the seat mechanism comprises a seat, a third link and a fourth link; two ends of the third connecting rod are respectively hinged to the seat and the frame; two ends of the fourth connecting rod are respectively hinged to the third connecting rod and the second connecting rod;
and when the second connecting rod is lifted, the lifting of the seat is realized through the transmission of the fourth connecting rod and the third connecting rod.
Preferably, the pushing mechanism comprises a fifth connecting rod, a chain and a push rod; the first rotating shaft of the fifth connecting rod is coaxially connected with the rotating shaft of the third connecting rod, and the second rotating shaft of the fifth connecting rod is hinged to the first end of the chain; the chain is bent, and the second end of the chain extends along the front-back direction of the vehicle body and is connected with the push rod; the push rod is movably connected to the fixed seat;
when the third connecting rod rotates, the first rotating shaft is driven to rotate, the second rotating shaft is driven to drive the chain to move, so that the push rod is pushed to drive the movable seat to move along the front-back direction of the vehicle body.
Preferably, the frame is provided with a fixing plate; the fixing plate is vertically arranged and provided with a clamping groove, and the chain moves in the clamping groove; and a section of channel of the clamping groove, which is close to the second rotating shaft, extends along the movement track of the second rotating shaft.
Preferably, the movement directions of the third connecting rod and the fifth connecting rod are opposite; the chain extends upwardly from the first end and then bends to extend downwardly to the second end.
Preferably, at least two travelling wheels at the bottom of the fixed seat are electric wheels; the movable seat is of a U-shaped structure, and travelling wheels arranged at the bottoms of two ends of the movable seat are universal wheels.
Preferably, the support mechanism is provided with two underarm supports; the supporting mechanism is provided with a remote control part for controlling the movement direction of the vehicle body.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a dual-purpose rollator for preventing falling and sitting, which realizes lifting of a supporting mechanism and a seat mechanism through a lifting mechanism so as to realize sitting posture switching; the seat mechanism enables the pushing mechanism to move in the lifting process, and then the movable seat can be driven to move along the front-back direction of the vehicle body, and the area of the base is adjusted, so that the gravity center of a user falls in the base, the balance of the vehicle body carrying the human body is kept, and the human body is prevented from falling down due to backward tilting.
In a preferred scheme, the lifting mechanism provides driving force through a driving part, and the lifting mechanism is simple in structure, easy to assemble and low in processing cost.
In a preferred scheme, the lifting mechanism realizes lifting transmission of the supporting mechanism and the seat mechanism through the first connecting rod and the second connecting rod which are equal in length and parallel to each other, has a simple structure and is convenient for maintaining the horizontal state of the supporting mechanism and the seat mechanism in the lifting process.
In a preferred scheme, the pushing mechanism pushes the movable seat through the fifth connecting rod, the chain and the push rod, is matched with the seat mechanism, and can complete the switching of two postures of the vehicle body sitting station and the adjustment of the length of the base by only one power of the driving part, and has a simple structure and a flexible vehicle body.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the technical means of the present invention, and is to be implemented in accordance with the contents of the specification, as follows, in accordance with the preferred embodiments of the present invention, as hereinafter described in detail with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic perspective view of a walker body in a standing position according to the present invention;
FIG. 2 is a schematic perspective view of the walker body in a sitting and standing position according to the present invention;
FIG. 3 is a schematic view of a part of the walker body in a standing position according to the present invention;
FIG. 4 is a schematic view of a partial structure of a base of the present invention;
FIG. 5 is a schematic perspective view of a fixing plate according to the present invention;
fig. 6 is a schematic diagram of an assembly structure of the fixing plate and the chain of the present invention.
In the figure:
100. a rollator body;
10. a support mechanism; 11. a first right angle connector; 111. an upper plate member; 112. a lower plate member; 12. an underarm support; 121. a first support plate; 122. a second support plate; 13. chest-protecting plate; 14. an auxiliary armrest;
20. a seat mechanism; 21. a seat; 22. a third link; 23. a fourth link;
30. a lifting mechanism; 31. a driving member; 32. a first link; 33. a second link; 34. a second right angle connector;
40. a base; 41. a fixing seat; 411. a fixed block; 412. an electric wheel; 42. a movable seat; 421. a universal wheel;
50. a frame; 51. a fixing plate; 501. a first fixing plate; 502. a second fixing plate; 511. a clamping groove; 5111. a channel; 52. a first connector; 53. a second connector;
61. a fifth link; 611. a first rotating shaft; 612. a second rotating shaft; 62. a chain; 621. a first end; 622. a second end; 623. a first segment; 624. a second segment; 625. a third segment; 63. a push rod; 64. a plug pin;
70. a remote control;
80. a knee protection mechanism; 81. a knee pad; 82. a telescoping member; 83. a knee-pad frame.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a device for practicing the invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the top-to-bottom dimension, "width" corresponds to the left-to-right dimension, and "depth" corresponds to the front-to-back dimension. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms (e.g., "connected" and "attached") referring to an attachment, coupling, etc., refer to a relationship wherein these structures are directly or indirectly secured or attached to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Example 1
The invention provides a dual-purpose rollator for preventing falling and sitting down, as shown in fig. 1, 2 and 4, comprising a rollator body 100, wherein the rollator body 100 comprises:
a support mechanism 10 for supporting an upper limb of a human body;
a seat mechanism 20 for supporting buttocks of a human body;
the lifting mechanism 30 is hinged to the supporting mechanism 10 and the seat mechanism 20 respectively to drive the supporting mechanism 10 and the seat mechanism 20 to move up and down so as to switch the sitting posture;
a base 40 provided with a plurality of travelling wheels; the base 40 comprises a fixed seat 41 and a movable seat 42; the fixing seat 41 is used for fixing the lifting mechanism 30; the seat mechanism 20 is connected to the movable seat 42 by a pushing mechanism;
when the seat mechanism 20 is lifted or lowered, the pushing mechanism drives the movable seat 42 to move along the front-rear direction of the vehicle body, so as to expand or reduce the area of the base 40, so that the center of gravity of the user is located in the vertical projection area of the base 40 in both sitting and standing postures.
Specifically, the support mechanism 10 and the seat mechanism 20 together form a support for the upper and lower body of the human body to firmly support the human body. In one embodiment, the rollator body 100 is also provided with a safety harness to tie up the human body and to secure the human body firmly when the user is in a general weakness state.
Specifically, the lifting mechanism 30 is fixed relative to the fixed seat 41, and the lifting mechanism 30 can perform lifting or descending movement relative to the fixed seat 41, because the lifting mechanism 30 is hinged to the supporting mechanism 10 and the seat mechanism 20, when the lifting mechanism 30 moves up and down, under the downward acting force of a human body on the supporting mechanism 10, the lifting mechanism 30 rotates at a certain angle relative to the supporting mechanism 10 when supporting the supporting mechanism 10, and the supporting mechanism 10 does not rotate relative to a horizontal plane in the lifting process, so as to ensure that the supporting mechanism 10 maintains a relative horizontal state to stably support the upper limb of the human body, and the hinge point of the supporting mechanism 10 and the lifting mechanism 30 is in a dead point or a locking state when the two postures of the sitting station are switched, so that the supporting mechanism can not rotate relative to the lifting mechanism 30 under the gravity of the supporting structure 10 when the two postures are switched. For the seat mechanism 20, when the lifting mechanism 30 moves up and down, the seat mechanism 20 is driven to move up and down so as to adjust the hip position of the human body.
Specifically, the base 40 can support the human body when the sitting and standing positions cause different centers of gravity by adjusting the length of the base 41 through the movement of the movable seat 42 along the front-rear direction of the vehicle body while the vehicle body is supported by the fixed seat 41 and the movable seat 42. When the stand posture is switched, the gravity center moves forward relative to the vehicle body, the lifting mechanism 30 supports the supporting mechanism 10 to match the height of the standing upper limb of the human body, and meanwhile drives the seat mechanism 20 to rise, and the seat mechanism 20 rises to drive the pushing mechanism to drive the movable seat 42 to move close to the fixed seat 41, so that the whole length of the base 40 is shortened, and the flexibility of the vehicle body during movement is ensured. When the sitting posture is switched, the gravity center moves backwards relative to the vehicle body, the lifting mechanism 30 descends to enable the supporting mechanism 10 to descend to match with the height of the lower limbs of the human body in the sitting posture, meanwhile, the lifting mechanism 30 descends to enable the seat mechanism 20 to descend to match with the height of the buttocks of the human body in the sitting posture, in addition, the seat mechanism 20 descends to enable the pushing mechanism to drive the movable seat 42 to move away from the fixed seat 41, the whole length of the base 40 is further prolonged, the gravity center is guaranteed to fall in the base 40 all the time in the sitting process of a user, and the human body is prevented from leaning backwards. Namely, the walker body 100 is driven by the lifting mechanism 30, the seat mechanism 20 and the pushing mechanism, so that the movable seat 42 is matched with the switching of the sitting and standing postures of the walker body to move along the front and back directions of the walker body, and the length of the base 40 is adjusted, so that the base 40 is ensured to firmly support the center of gravity of the walker body and the human body, and the human body is prevented from falling down.
In one embodiment, the rollator body 100 further includes a frame 50 fixed to the fixed seat 41; the lifting mechanism 30 is hinged to the frame 50. The lifting mechanism 30 is fixed through the frame 50, so that the whole length of the lifting mechanism 30 is shortened, the lifting amplitude of the lifting mechanism 30 is controlled, and the processing cost of the lifting mechanism 30 with a complex structure is saved.
Further, the frame 50 is vertically disposed, has a simple structure and can provide a stable supporting force.
Further, the frame 50 is disposed on the upper surface of the fixed seat 41 and near the front end of the fixed seat 41, so as to facilitate the design of balancing the vehicle body.
In an embodiment, the lifting mechanism 30 includes a driving member 31, and a first link 32 and a second link 33 disposed in parallel in the same longitudinal plane and having equal lengths; the two ends of the first connecting rod 32 and the second connecting rod 33 are respectively hinged below the supporting mechanism 10 and the frame 50; two ends of the driving member 31 are respectively hinged to the second connecting rod 33 and the frame 50;
the driving member 31 is lifted to drive the first link 32 and the second link 33 to synchronously lift, so as to realize the lifting of the supporting mechanism 10. Specifically, in the lifting process of the lifting mechanism 30, the first connecting rod 32 and the second connecting rod 33 always form a parallelogram structure, and the structure is simple. When the driving member 31 pushes or pulls down the second link 33, the first link 32 and the second link 33 rotate relative to the hinge point of the frame 50, so that in order to match the parallelogram structure formed by the first link 32 and the second link 33, the hinge point of the first link 32 and the second link 33 relative to the supporting mechanism 10 also rotates, so that the supporting mechanism 10 is maintained to be always in a relatively horizontal state and the supporting mechanism 10 is lifted. Because the parallelogram structure formed by the first connecting rod 32 and the second connecting rod 33 is positioned below the supporting mechanism 10, when the driving piece 31 stops driving, the first connecting rod 32 and the second connecting rod 33 do not rotate relative to the frame 50, so that the first connecting rod 32 and the second connecting rod 33 do not rotate relative to the supporting mechanism 10 in order to match the parallelogram structure formed by the first connecting rod 32 and the second connecting rod 33, namely two hinge points of the first connecting rod 32 and the second connecting rod 33 relative to the supporting mechanism 10 are in dead points at the moment, even if the supporting mechanism 10 is kept in a relative horizontal state due to the dead weight of the supporting mechanism 10, the supporting mechanism 10 is always in a relative horizontal state when the sitting posture of the vehicle body is adjusted, and the upper limbs of the human body are stably supported. The driving member 31 includes, but is not limited to, an electric push rod and an electric cylinder, and can automatically stretch and retract to drive the second connecting rod 33 to drive the first connecting rod 32 to move up and down. The driving part 31 has a simple structure, and the lifting transmission mechanism is formed by the driving part 31, the first connecting rod 32 and the second connecting rod 33 together, so that the lifting of the supporting mechanism 10 and the seat mechanism 20 can be realized.
Further, the driving member 31 and the first and second connecting rods 32 and 33 are in the same longitudinal plane, so as to design the control of the assembly positions of the driving member 31 and the first and second connecting rods 32 and 33 on the lifting amplitude of the vehicle body.
Further, the first link 32 and the second link 33 are telescopic rods, and can be adjusted in equal length to ensure the horizontal state of the support mechanism 10 and adjust the size of the vehicle body to match with the human bodies of different sizes.
Further, a first right-angle connecting piece 11 is arranged at the bottom of the supporting mechanism 10; the upper plate 111 of the first right angle connector 11 is horizontally arranged; the upper plate 111 and the lower plate 112 of the first right angle connector 11 are respectively hinged to one ends of the first link 32 and the second link 33. The hinge connection of the supporting mechanism 10 and the first connecting rod 32 and the second connecting rod 33 is realized through the first right-angle connecting piece 11, the first right-angle connecting piece 11 has certain supporting strength and simple structure, and is matched with the first connecting rod 32 and the second connecting rod 33 which form a parallelogram structure so as to realize the horizontal support of the supporting mechanism 10 by the first connecting rod 32 and the second connecting rod 33.
Further, the first link 32 and the second link 33 are respectively hinged to the top end of the frame 50. Specifically, a top wall of the top end of the frame 50 is provided with a first connecting piece 52, and a side wall of the top end of the frame 50 is provided with a second connecting piece 53. The first connecting piece 52 and the second connecting piece 53 are hinged with one end of the first connecting rod 32 and one end of the second connecting rod 33 respectively, and the first connecting piece 52 and the second connecting piece 53 form a right-angle connecting structure which is matched with the first right-angle connecting piece 11 so as to realize the hinging of two ends of the first connecting rod 32 and the second connecting rod 33.
In one embodiment, the seat mechanism 20 includes a seat 21, a third link 22, and a fourth link 23; the two ends of the third connecting rod 22 are respectively hinged with the seat 21 and the frame 50; the two ends of the fourth connecting rod 23 are respectively hinged with the third connecting rod 22 and the second connecting rod 33;
when the second link 33 is lifted, the lifting of the seat 21 is realized by the transmission of the fourth link 23 and the third link 22. Specifically, the hinge point of the seat 21 and the third link 22 is used for realizing rotation adjustment of the position of the seat 21, so as to fold or open the seat 21, so as to adapt to different requirements of users for getting on and off the vehicle. Further, the switching of the fixed connection or the rotational connection between the seat 21 and the third link 22 is achieved by a mechanical locking means (such as a locking wrench). Taking the driving piece 31 as an electric push rod for specific explanation, when the vehicle body is switched from a sitting posture to a standing posture, the driving piece 31 stretches to jack up the second connecting rod 33 to drive the first connecting rod 32 to move upwards, and hinge points at two ends of the first connecting rod 32 and the second connecting rod 33 rotate to prop up the supporting mechanism 10; the second connecting rod 33 moves upwards to pull up the fourth connecting rod 23, the fourth connecting rod 23 moves upwards to pull up the third connecting rod 22, and the hinge points at the two ends of the third connecting rod 22 rotate to match with the upward movement of the third connecting rod 22 to drive the seat 21 to move upwards, so that the sitting posture is switched to the standing posture. When the vehicle body is switched from a standing posture to a sitting posture, the driving piece 31 is retracted, the second connecting rod 33 is pulled downwards to drive the first connecting rod 32 to move downwards, and the hinge points at the two ends of the first connecting rod 32 and the second connecting rod 33 rotate, so that the supporting mechanism 10 moves downwards; the second link 33 moves downwards to press the fourth link 23, the fourth link 23 moves downwards to press the third link 22, and the hinge points at two ends of the third link 22 rotate to match with the downward movement of the third link 22 to drive the seat 21 to move downwards, so that the standing posture is switched to the sitting posture.
Further, the driving member 31, the first link 32, the second link 33, the third link 22 and the fourth link 23 are symmetrical about the same vertical plane, so as to facilitate the vehicle body balance design.
Further, the driving member 31 and the fourth link 23 are connected to the lower portion of the second link 33 through the second right angle connecting member 34, so as to reduce the amount of connecting members and simplify the design difficulty of the vehicle body.
In one embodiment, as shown in fig. 1, 2 and 3, the pushing mechanism includes a fifth link 61, a chain 62 and a push rod 63; the first shaft 611 of the fifth link 61 is coaxially connected with the shaft of the third link 22, and the second shaft 612 thereof is hinged to the first end 621 of the chain 62; the chain 62 is bent, and a second end 622 of the chain 62 extends in the front-rear direction of the vehicle body and is connected to the push rod 63; the push rod 63 is movably connected to the fixed seat 41;
when the third link 22 rotates, the first shaft 611 is driven to rotate, so as to drive the second shaft 612 to drive the chain 62 to move, so as to push the push rod 63 to drive the movable seat 42 to move along the front-rear direction of the vehicle body. Specifically, when the lifting mechanism 30 lifts, the third link 22 rotates relative to the rotation axis of the fifth link 61 and further rotates together with the first rotation axis 611, so that the shaft of the fifth link 61 rotates relative to the first rotation axis 611, the second rotation axis 612 longitudinally displaces to apply a longitudinal pushing force to the first end 621 of the chain 62, so that the chain 62 longitudinally displaces, and the second end 622 of the chain 62 moves along the front-rear direction of the vehicle body, so that the push rod 63 moves along the front-rear direction of the vehicle body; the push rod 63 drives the movable seat 42 to move along the front-rear direction of the vehicle body when moving along the front-rear direction of the vehicle body, so as to adjust the length of the base 40, thereby ensuring that the center of gravity always falls in the base 40 during sitting of the human body when the vehicle body switches sitting postures, and preventing the human body from falling down due to backward tilting.
In one embodiment, as shown in fig. 1, 2, 5 and 6, the frame 50 is provided with a fixing plate 51; the fixing plate 51 is vertically arranged and provided with a clamping groove 511, and the chain 62 moves in the clamping groove 511. The movement trace of the chain 62 is defined by the catching groove 511. The slot 511 extends along the movement track of the second shaft 612 of the fifth link 61 near the channel 5111 of the fifth link 61, so that the chain 62 moves to match the movement of the second shaft 612.
Further, a fixing plate 51 is provided at the left or right side of the frame 50 to facilitate connection of the fifth link 61 with the third link 22.
Further, the peripheral side profile of the fixing plate 51 extends in the extending direction of the chain 62 to enhance visual sense.
Further, the fixing plate 51 includes a first fixing plate 501, a second fixing plate 502 to facilitate assembly of the fixing plate 51. The first fixing plate 501 has a plate-like structure for fixing the upper bent section of the chain 62, and the second fixing plate 502 has an L-shaped structure for fixing the lower bent section of the chain 62.
Further, as shown in fig. 1 and 3, the movement directions of the third link 22 and the fifth link 61 are opposite, so that the third link 22 and the fifth link 61 can be rotated in opposite directions when rotating, and the movement process of the chain 62 is driven by the rotation of the fifth link 61 without interfering with the movement of the third link 22 by arranging the third link 22 and the fifth link 61 on two sides of the hinge point of the third link 22 and the fifth link 61 respectively. The positions of the lifting mechanism 30 and the pushing mechanism are reasonably arranged so as to facilitate the posture switching of the vehicle body. Further, as shown in fig. 6, the chain 62 extends upwardly from a first end 621 and then bends to extend downwardly to the second end 622. The chain 62 is provided with a first chain segment 623 extending upwards from the first end 621, a second chain segment 624 extending downwards after bending from the tail end of the first chain segment 623, and a third chain segment 625 extending from the tail end of the second chain segment 624 along the front-rear extending direction of the vehicle body; the first end 621 is disposed on the first segment 623 and the second end 622 is disposed on the third segment 625. Because the movement directions of the third link 22 and the fifth link 61 are opposite, and the longitudinal movement directions of the first chain segment 623 and the second chain segment 624 are opposite, when the vehicle body moves upward (the sitting posture is switched to the standing posture), the third link 22 moves upward, the fifth link 61 rotates downward, the first end 621 of the chain 62 drives the first chain segment 623 to move downward, and the second chain segment 624 moves upward, so that the third chain segment 625 finally drives the movable seat 42 to move close to the fixed seat 41, thereby shortening the length of the base 40. On the contrary, the principle is similar when the vehicle body descends, and the description is omitted here. By defining the movement direction of the third link 22 and the fifth link 61 and the bending direction of the chain 62, the purpose of switching the vehicle body between sitting and standing and adjusting the length of the base 42 can be achieved, and the vehicle body structure can be simplified, so that the flexibility of the rollator body 100 can be improved.
It should be understood that the first and second ends 621, 622 of the chain 62 may represent links at the ends of the chain 62, respectively, or may be links near the ends of the chain 62. To make efficient use of the drive of the chain 62, the first and second ends 621, 622 of the chain 62 represent the two end links of the chain 62, respectively.
In an embodiment, as shown in fig. 1, 2 and 4, the push rod 63 is movably connected below the fixing seat 41, and is hidden to improve the aesthetic feeling of the vehicle body. In one embodiment, the fixing base 41 is a plate structure to provide a stable supporting force. Further, the fixing plate 51 includes a first fixing plate 501, a second fixing plate 502; the fixing seat 41 is provided with a through groove, the second fixing plate 502 is of an L-shaped structure, and the transverse side plate of the second fixing plate 502 is inserted into the through groove on the fixing seat 41, so that a section of chain 62 on the second fixing plate 502 is positioned below the fixing seat 41, and the push rod 63 positioned below the fixing seat 41 is connected with the second end 622 of the chain 62.
Further, as shown in fig. 4, the second end 622 of the chain 62 is connected to the push rod 63 by a pin 64, and the pin 64 is simple and compact.
In an embodiment, as shown in fig. 4, the push rod 63 has an optical axis structure, and the push rod 63 has a simple structure and is convenient for being movably connected with the fixing seat 41. Further, the fixing seat 41 is provided with a fixing block 411, a through hole is formed in the fixing block 411, the push rod 63 is movably connected in the through hole, and the assembly structure is simple.
In an embodiment, as shown in fig. 1, at least two travelling wheels at the bottom of the fixed seat 41 are electric wheels 412 for driving the walker body 100 to walk; the movable seat 42 is in a U-shaped structure, and travelling wheels arranged at the bottoms of two ends of the movable seat 42 are universal wheels 421. Specifically, the movable seat 42 has a U-shaped structure, and the structure is simple and the support is stable, and the movable seat 42 with the U-shaped structure is convenient to be inserted into two sides of furniture such as a toilet, a chair, etc., so that a user can move from the rollator body 100 to other positions in the home. In order to facilitate the movement of the movable seat 42, its weight is lower than that of the fixed seat 41, and its stability is weaker than that of the fixed seat 41. The electric wheel 412 is disposed at the bottom of the fixed seat 41, and the universal wheel 421 is disposed at the bottom of the movable seat 42, which is more beneficial to driving the vehicle body by the wheel structure.
In one embodiment, as shown in fig. 1 and 2, the support mechanism 10 is provided with two underarm supports 12. Further, the armpit supporting member 12 includes a first supporting plate 121 and a second supporting plate 122, which are perpendicular to each other, wherein the first supporting plate 121 is used for supporting the lower part of the arm, and the second supporting plate 122 is used for limiting the left and right sides of the human body. The supporting mechanism 10 is provided with a remote control 70 for controlling the movement direction of the vehicle body. Further, the remote control 70 is a rocker.
In an embodiment, as shown in fig. 1 and 2, the supporting mechanism 10 further includes a chest-protecting plate 13, where an outer surface of the chest-protecting plate 13 facing the human body is a concave curved surface for fitting the front outline of the upper body of the human body and for supporting the forward leaning body of the human body.
Further, the supporting mechanism 10 further comprises an adjusting mechanism (not shown) for adjusting the horizontal and vertical positions of the chest-protecting plate 13 and/or for adjusting the horizontal and vertical positions of the two armpit supporting members 12 respectively, so as to adapt to human bodies with different body heights.
In one embodiment, as shown in fig. 1 and 2, the support mechanism further includes an auxiliary armrest 14 for a caregiver to grasp to push the rollator body 100.
In one embodiment, as shown in fig. 1, 2 and 3, the rollator body 100 further includes two knee protection mechanisms 80 for limiting the knees of the human body and for limiting the lower limbs of the human body. Further, the two knee protecting mechanisms 80 are symmetrically arranged.
Further, the knee-pad mechanism 80 includes a knee-pad plate 81, a telescopic member 82, a knee-pad frame 83, the knee-pad plate 81 being adapted to rest against the knee of the human body; the knee pad 81 is connected to a telescopic member 82, and the telescopic member 82 is movable in the front-rear direction of the vehicle body to adjust the front-rear position of the knee pad 81. The extension member 82 is connected to a knee brace 83, and the knee brace 83 is connected to the frame 50. The knee pad frame 83 is vertically movable to adjust the vertical height of the knee pad 81. And further, the front and back positions and the up and down positions of the knee pad 81 are adjusted to meet the requirements of users with different heights and leg lengths.
The user boarding method comprises the following steps:
s11, a user sits on a chair or a bedside, the remote control rollator body 100 moves to the front of the user, and the seat 21 is kept in a folded state;
s12, placing feet on the fixing seat 41, fixing the lower leg and the waist by using the safety belt, and supporting armpits by using the armpit supporting piece 12;
s13, controlling the driving piece 31 to hold the user up to a standing state;
s14, unfolding the seat 21 to be attached to the buttocks of the user;
s15, the user can control the rollator to run, and the sitting posture and the standing posture can be switched by controlling the driving piece 31.
The user getting-off method comprises the following steps:
s21, controlling the rollator body 100 to run to a proper position in front of a chair or a bed, and adjusting the posture to be a standing posture by a user;
s22, supporting the armpit by using the armpit supporting piece 12;
s23, folding the seat 21;
s24, controlling the driving piece 31 to fall, and placing the user on a chair or a bedside;
s25, the user releases the fixation of the waist and the lower leg;
s26, the remote control rollator body 100 is operated to a proper position.
To ensure that the rollator body 100 can be moved to a position closest to the bed or chair when the user is on the chair or at the bedside wants to get on the car or when the user wants to get off the bedside or chair by the rollator body 100, the seat 21 can be folded; when the user is using the rollator body 100, both in standing position and sitting position, the seat 21 can be unfolded to support the buttocks, ensuring the safety of the user. When the seat 21 is turned over, the seat 21 can be turned over around the hinge point of the seat 21 and the third connecting rod 22, and the seat 21 is locked in place through a mechanical locking mode when the seat 21 is turned over.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can smoothly practice the invention as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (8)
1. A dual-purpose rollator of sitting at station prevents falling, includes rollator body (100), characterized in that, rollator body (100) includes:
a support mechanism (10) for supporting the upper limb of the human body;
a seat mechanism (20) for supporting the buttocks of a person;
the lifting mechanism (30) is respectively hinged with the supporting mechanism (10) and the seat mechanism (20) to drive the supporting mechanism (10) and the seat mechanism (20) to move up and down so as to switch the sitting posture;
a base (40) provided with a plurality of travelling wheels; the base (40) comprises a fixed seat (41) and a movable seat (42); the fixed seat (41) is used for fixing the lifting mechanism (30); the seat mechanism (20) is connected to the movable seat (42) through a pushing mechanism;
when the seat mechanism (20) ascends or descends, the pushing mechanism drives the movable seat (42) to move along the front-back direction of the vehicle body so as to expand or reduce the area of the base (40), so that the gravity center of a user is positioned in the vertical projection area of the base (40) when in two postures of sitting and standing;
the seat mechanism (20) comprises a seat (21) and a third connecting rod (22), and the third connecting rod (22) is hinged to the seat (21);
the pushing mechanism comprises a fifth connecting rod (61), a chain (62) and a push rod (63); the first rotating shaft (611) of the fifth connecting rod (61) is coaxially connected with the rotating shaft of the third connecting rod (22), and the second rotating shaft (612) of the fifth connecting rod is hinged with the first end (621) of the chain (62); the chain (62) is bent, and a second end (622) of the chain (62) extends along the front-rear direction of the vehicle body and is connected to the push rod (63); the push rod (63) is movably connected with the fixed seat (42);
when the third connecting rod (22) rotates, the first rotating shaft (611) is driven to rotate, the second rotating shaft (612) is driven to drive the chain (62) to move, so that the push rod (63) is pushed to drive the movable seat (42) to move along the front-back direction of the vehicle body;
the supporting mechanism (10) is provided with two armpit supporting pieces (12); a remote control (70) is arranged on the supporting mechanism (10) and used for controlling the movement direction of the vehicle body;
the seat mechanism (20) rises to drive the pushing mechanism to drive the movable seat (42) to move close to the fixed seat (41), so that the overall length of the base (40) is shortened, and the seat mechanism (20) descends to drive the movable seat (42) to move away from the fixed seat (41), so that the overall length of the base (40) is prolonged.
2. Rollator for use in both fall and sitting positions according to claim 1, further comprising a frame (50) fixed to the fixed seat (41); the lifting mechanism (30) is hinged to the frame (50).
3. A rollator for both sitting and standing as claimed in claim 2, wherein the lifting mechanism (30) comprises a driving member (31) and a first link (32) and a second link (33) which are arranged in parallel up and down in the same longitudinal plane and have the same length; both ends of the first connecting rod (32) and both ends of the second connecting rod (33) are respectively hinged below the supporting mechanism (10) and the rack (50); two ends of the driving piece (31) are respectively hinged to the second connecting rod (33) and the frame (50);
the driving piece (31) is lifted to drive the first connecting rod (32) and the second connecting rod (33) to synchronously lift so as to realize the lifting of the supporting mechanism (10).
4. A rollator for both sitting and standing use, according to claim 3, characterized in that the bottom of the supporting means (10) is provided with a first right angle connection (11); the upper plate (111) of the first right-angle connecting piece (11) is horizontally arranged; the upper plate (111) and the lower plate (112) of the first right-angle connecting piece (11) are respectively hinged to one ends of the first connecting rod (32) and the second connecting rod (33).
5. A rollator for both fall and sitting positions according to claim 3, characterized in that the seat mechanism (20) further comprises a fourth link (23); two ends of the third connecting rod (22) are respectively hinged to the seat (21) and the frame (50); two ends of the fourth connecting rod (23) are respectively hinged to the third connecting rod (22) and the second connecting rod (33);
when the second connecting rod (33) is lifted, the lifting of the seat (21) is realized through the transmission of the fourth connecting rod (23) and the third connecting rod (22).
6. Rollator for use in a fall and sitting position according to claim 5, characterized in that the frame (50) is provided with a fixing plate (51); the fixing plate (51) is vertically arranged and provided with a clamping groove (511), and the chain (62) moves in the clamping groove (511); the clamping groove (511) is close to a section of channel (5111) of the second rotating shaft (612) and extends along the movement track of the second rotating shaft (612).
7. A rollator for both sitting and standing as claimed in claim 1, characterized in that the third link (22) and the fifth link (61) are moved in opposite directions; the chain (62) extends upwardly from a first end (621) and then bends to extend downwardly to the second end (622).
8. The rollator for both sitting and standing as claimed in claim 1, wherein at least two walking wheels at the bottom of the fixed seat (41) are electric wheels (412); the movable seat (42) is of a U-shaped structure, and travelling wheels arranged at the bottoms of two ends of the movable seat (42) are universal wheels (421).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110481697.9A CN113101152B (en) | 2021-04-30 | 2021-04-30 | Anti-falling sitting and standing dual-purpose rollator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110481697.9A CN113101152B (en) | 2021-04-30 | 2021-04-30 | Anti-falling sitting and standing dual-purpose rollator |
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| CN113101152A CN113101152A (en) | 2021-07-13 |
| CN113101152B true CN113101152B (en) | 2023-05-12 |
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| CN202110481697.9A Active CN113101152B (en) | 2021-04-30 | 2021-04-30 | Anti-falling sitting and standing dual-purpose rollator |
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| CN114767474B (en) * | 2021-11-24 | 2024-01-23 | 杭州科技职业技术学院 | Rehabilitation device |
| CN114452115A (en) * | 2022-01-19 | 2022-05-10 | 广东中匠福健康产业股份有限公司 | Armpit supporting type shifting machine |
| CN114291190B (en) * | 2022-02-09 | 2022-07-12 | 中国科学院苏州生物医学工程技术研究所 | Telescopic chassis and walking aid vehicle |
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Effective date of registration: 20221114 Address after: 215000 No. 88, Keling Road, science and Technology City, high tech Zone, Suzhou, Jiangsu Applicant after: Suzhou Guoke medical technology development (Group) Co.,Ltd. Address before: 321000 8th floor, Jinzu building, Yongkang headquarters center, Jinhua City, Zhejiang Province Applicant before: YONGKANG GUOKE REHABILITATION ENGINEERING TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20240806 Address after: 215000 No. 88, Keling Road, science and Technology City, high tech Zone, Suzhou, Jiangsu Patentee after: Suzhou Guoke medical technology development (Group) Co.,Ltd. Country or region after: China Patentee after: Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences Address before: 215000 No. 88, Keling Road, science and Technology City, high tech Zone, Suzhou, Jiangsu Patentee before: Suzhou Guoke medical technology development (Group) Co.,Ltd. Country or region before: China |