CN113101152A - Fall-proof, fall-proof, sitting and standing dual-purpose walking-aid vehicle - Google Patents
Fall-proof, fall-proof, sitting and standing dual-purpose walking-aid vehicle Download PDFInfo
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- CN113101152A CN113101152A CN202110481697.9A CN202110481697A CN113101152A CN 113101152 A CN113101152 A CN 113101152A CN 202110481697 A CN202110481697 A CN 202110481697A CN 113101152 A CN113101152 A CN 113101152A
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- 230000007246 mechanism Effects 0.000 claims abstract description 165
- 230000005484 gravity Effects 0.000 claims abstract description 14
- 230000036544 posture Effects 0.000 claims description 38
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 6
- 210000001217 buttock Anatomy 0.000 claims description 6
- 210000001364 upper extremity Anatomy 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 210000003127 knee Anatomy 0.000 description 18
- 238000005452 bending Methods 0.000 description 5
- 210000003141 lower extremity Anatomy 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010002027 Amyotrophy Diseases 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 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 fall-proof and sit-stand dual-purpose rollator, which comprises: a support mechanism; a seat mechanism; 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 and switch the sitting posture; a base; 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 to 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. The lifting of the supporting mechanism and the seat mechanism is realized through the lifting mechanism so as to realize the sitting and standing 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 and back directions of the vehicle body, the area of the base is expanded or reduced, the gravity center of a user falls into the base, the balance of the vehicle body loaded with the human body is kept, and the human body is prevented from tilting backwards and falling down.
Description
Technical Field
The invention relates to the field of nursing auxiliary equipment, in particular to a falling-prevention and sitting-station dual-purpose walking aid vehicle.
Background
With the continuous development of science and technology and the increase of population of lower limb disability, the performance and the variety of the walking aid tools are continuously improved and increased, and the walking aid tools of the lower limb disability population are developed from a sitting type walking aid to a standing type walking aid. Compared with a sitting type walking aid, the standing type walking aid effectively prevents the problems that a user is easy to bedsore and amyotrophy when sitting on a wheelchair for a long time, and has a certain rehabilitation effect.
The standing type walking aid vehicle assists a user to sit and stand through the lifting mechanism and the seat mechanism, but as the front and back positions of the gravity center of the user are different when the user uses the walking aid vehicle in a sitting posture and when the user uses the walking aid vehicle in a standing posture, in order to prevent the gravity center from moving backwards when the user uses the walking aid vehicle in a sitting posture and causing secondary injury, the walking aid device on the market can add a large amount of balance weights on the head of a vehicle body, generally 80kg-100kg to balance the backward movement of the gravity center of a seated person, so that the weight of the whole vehicle is too large, the use and the transportation are inconvenient, and energy is. And the walking aid is also partially provided, and the chassis is lengthened to ensure the stability, so that the turning radius of the vehicle body is increased, and the flexibility of actions such as turning and the like of the walking aid at home or in some narrow spaces is seriously influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the anti-falling and anti-falling dual-purpose rollator for the sitting and standing, the switching between the sitting posture and the standing posture can be carried out, the application is diversified, and the area of the base is adjusted along with the switching of the sitting posture and the standing posture of the rollator body, so that the gravity center of a user can be ensured to fall on the base, and the user is prevented from falling down by falling backwards.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The invention provides a crash-proof and fall-proof dual-purpose rollator which is used in a sitting and standing position, comprising an rollator body; the rollator body includes:
the supporting 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 and switch the sitting posture;
the base is 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 to 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 user sits or stands in two postures.
Preferably, the device also comprises a frame fixed on the fixed seat; the lifting mechanism is hinged on the rack.
Preferably, the lifting mechanism comprises a driving part, and 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 rack; two ends of the driving piece are respectively hinged to the second connecting rod and the rack;
the driving part is lifted to drive the first connecting rod and the second connecting rod to lift synchronously, so that the supporting mechanism is lifted.
Preferably, a first right-angle connecting piece is arranged at the bottom of the supporting mechanism; 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 end of the first connecting rod and one end of the second connecting rod.
Preferably, the seat mechanism comprises a seat, a third link, a fourth link; two ends of the third connecting rod are hinged to the seat and the rack respectively; two ends of the fourth connecting rod are hinged to the third connecting rod and the second connecting rod respectively;
when the second connecting rod is lifted, the seat is lifted 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; a first rotating shaft of the fifth connecting rod is coaxially connected with a rotating shaft of the third connecting rod, and a second rotating shaft of the fifth connecting rod is hinged to the first end of the chain; the chain is arranged in a bending mode, and the second end of the chain extends in the front-rear direction of the vehicle body and is connected to the push rod; the push rod is movably connected with 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, and therefore 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 close to the second rotating shaft extends along the motion 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 upward from a first end and then bends to extend downward to the second end.
Preferably, at least two walking wheels at the bottom of the fixed seat are electric wheels; the movable seat is U type structure, the walking wheel that the movable seat both ends bottom was equipped with is the universal wheel.
Preferably, the supporting mechanism is provided with two under-arm supporting pieces; and the support mechanism is provided with a remote control part for controlling the motion direction of the vehicle body.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a crash-proof and fall-proof dual-purpose rollator for sitting and standing, which realizes the lifting of a supporting mechanism and a seat mechanism through a lifting mechanism so as to realize the posture switching of the sitting and standing; the seat mechanism makes the pushing mechanism move in the lifting process, and then the movable seat can be driven to move along the front and rear directions of the vehicle body, the area of the base is adjusted, so that the gravity center of a user falls into the base, the balance of the vehicle body loaded with a human body is kept, and the human body is prevented from tilting backwards and falling down.
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 capable of saving processing cost.
In a preferred scheme, the lifting mechanism realizes the lifting transmission of the supporting mechanism and the seat mechanism through the first connecting rod and the second connecting rod which have the same length and are parallel to each other, has a simple structure and is convenient to maintain the horizontal state of the supporting mechanism and the seat mechanism in the lifting process.
In a preferred scheme, the pushing mechanism realizes pushing of the movable seat through the fifth connecting rod, the chain and the push rod, is matched with the seat mechanism, can complete switching of two postures of the vehicle body in the sitting position and adjustment of the length of the base only by driving one power piece, and is simple in structure and flexible in vehicle body.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is 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 embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic perspective view of a rollator body in a standing position according to the present invention;
FIG. 2 is a schematic perspective view of the rollator body in the sitting and standing position according to the present invention;
FIG. 3 is a schematic view of a portion of the rollator body of the present invention in a standing position;
FIG. 4 is a partial structural view of the 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 view 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; 112. a lower plate; 12. an underarm support; 121. a first support plate; 122. a second support plate; 13. a chest protecting plate; 14. an auxiliary handrail;
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 fixed 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 card slot; 5111. a channel; 52. a first connecting member; 53. a second connecting member;
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 bolt;
70. remote control;
80. a knee protection mechanism; 81. knee protection plates; 82. a telescoping member; 83. knee protection frame.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. 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, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, 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 the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example 1
The invention provides a crash-proof and reverse-sitting-station-standing dual-purpose rollator, which comprises a rollator body 100 as shown in figures 1, 2 and 4, wherein the rollator body 100 comprises:
a support mechanism 10 for supporting the upper limbs of the human body;
a seat mechanism 20 for supporting the buttocks of a human body;
the lifting mechanism 30 is respectively hinged to 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 fixing 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 is raised or lowered, 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, and the gravity center of a 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 bodies of the human body to stably support the human body. In one embodiment, the rollator body 100 is further provided with a safety belt to restrain the human body, so as to firmly fix the human body when the user is in a general powerless state.
Specifically, the lifting mechanism 30 is fixed relative to the fixing seat 41, the lifting mechanism 30 can perform ascending or descending motion relative to the fixing seat 41, because the lifting mechanism 30 is hinged to the supporting mechanism 10 and the seat mechanism 20, when the lifting mechanism 30 performs ascending and descending motion, 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 relatively horizontal state, so as to stably support the upper limbs of the human body, and the hinge point between the supporting mechanism 10 and the lifting mechanism 30 is in a dead point or a locking state when the switching of the two postures of the sitting station is completed by limiting, so as to ensure that the supporting mechanism 10 cannot rotate relative to the lifting mechanism 30 under the self gravity of the supporting. With respect to the seat mechanism 20, when the lifting mechanism 30 moves up and down, the seat mechanism 20 is driven to move up and down to adjust the position of the buttocks of the human body.
Specifically, the base 40 is provided with the fixed seat 41 and the movable seat 42 to realize vehicle body support, and simultaneously, the movable seat 42 can move along the front-back direction of the vehicle body to adjust the length of the base 41 so as to support the human body in different postures and with different gravity centers. When the vehicle body is switched to the standing posture, 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 limbs of the human body and simultaneously drives the seat mechanism 20 to ascend, the seat mechanism 20 ascends to drive the pushing mechanism to drive the movable seat 42 to move close to the fixed seat 41, the overall length of the base 40 is further shortened, and the flexibility of the vehicle body during movement is ensured. When switching to the position of sitting, the focus moves backward relative to the vehicle body, elevating system 30 descends to make supporting mechanism 10 descend in order to cooperate the position of sitting human lower limbs height, and elevating system 30 makes seat mechanism 20 descend in order to cooperate the position of sitting human buttock height simultaneously, and in addition, seat mechanism 20 descends to make pushing mechanism order about movable seat 42 to keep away from fixing base 41 motion, and then prolongs the whole length of base 40, guarantees that the user sits down in-process focus and falls in base 40 all the time, prevents human hypsokinesis. That is, the rollator body 100 is driven by the lifting mechanism 30, the seat mechanism 20 and the pushing mechanism, so that the movable seat 42 moves along the front and rear directions of the body in cooperation with the change of the sitting and standing postures of the body, and the length of the base 40 is adjusted to ensure the stable support of the base 40 on the body and the center of gravity of the human body, thereby preventing the human body from falling down.
In one embodiment, the rollator body 100 further comprises a frame 50 fixed on the fixing base 41; the lifting mechanism 30 is hinged to the frame 50. The lifting mechanism 30 is fixed by 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 on one hand, and the processing cost of the lifting mechanism 30 with a complex structure is saved on the other hand.
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 fixing base 41 and near the front end of the fixing base 41, so as to facilitate the balance design of the vehicle body.
In one embodiment, the lifting mechanism 30 includes an active member 31, and a first link 32 and a second link 33 that are disposed in parallel in the same longitudinal plane and have the same length; two ends of the first connecting rod 32 and the second connecting rod 33 are respectively hinged below the supporting mechanism 10 and the rack 50; two ends of the driving member 31 are hinged to the second connecting rod 33 and the frame 50 respectively;
the driving member 31 ascends and descends to drive the first connecting rod 32 and the second connecting rod 33 to ascend and descend synchronously, so as to realize the ascending and descending of the supporting mechanism 10. Specifically, in the process of lifting the lifting mechanism 30, the first link 32 and the second link 33 always form a parallelogram structure, and the structure is simple. When the driving member 31 pushes or pulls the second connecting rod 33, the hinge points of the first connecting rod 32 and the second connecting rod 33 rotate relative to the frame 50, and in order to match the parallelogram structure formed by the first connecting rod 32 and the second connecting rod 33, the hinge points of the first connecting rod 32 and the second connecting rod 33 rotate relative to the supporting mechanism 10, so as to lift and lower the supporting mechanism 10 while maintaining the supporting mechanism 10 in a relatively horizontal state. Because the parallelogram structure formed by the first link 32 and the second link 33 is located below the supporting mechanism 10, when the driving member 31 stops driving, the first link 32 and the second link 33 do not rotate relative to the frame 50, and in order to match the parallelogram structure formed by the first link 32 and the second link 33, the first link 32 and the second link 33 do not rotate relative to the supporting mechanism 10, that is, two hinge points of the first link 32 and the second link 33 relative to the supporting mechanism 10 are in a dead point state at the moment, even if the supporting mechanism 10 is dead weight, the supporting mechanism 10 is maintained in a relatively horizontal state, so as to ensure that the supporting mechanism 10 is always in a relatively horizontal state when the sitting posture of the vehicle body is adjusted, and to stably support the upper limbs of the human body. The driving member 31 includes, but is not limited to, an electric push rod, an electric cylinder, and can automatically extend and retract to drive the second connecting rod 33 to drive the first connecting rod 32 to move up and down. The driving member 31 has a simple structure, and the lifting transmission mechanism is formed by the driving member 31, the first connecting rod 32 and the second connecting rod 33, so that the lifting of the supporting mechanism 10 and the seat mechanism 20 can be realized.
Further, the active part 31 is in the same longitudinal plane with the first connecting rod 32 and the second connecting rod 33, so that the control of the lifting amplitude of the vehicle body by the assembling position of the active part 31 with the first connecting rod 32 and the second connecting rod 33 is designed.
Further, the first connecting rod 32 and the second connecting rod 33 are both telescopic rods, and the length adjustment can be performed in an equivalent amount, so that the horizontal state of the supporting mechanism 10 is guaranteed, and meanwhile, the size of the vehicle body is adjusted to match human bodies of different body types.
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 connecting piece 11 is horizontally arranged; the upper plate 111 and the lower plate 112 of the first right-angle connecting member 11 are respectively hinged to one end of the first connecting rod 32 and one end of the second connecting rod 33. The first right-angle connecting piece 11 is used for realizing the hinging of the supporting mechanism 10 with the first connecting rod 32 and the second connecting rod 33, 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 supporting of the first connecting rod 32 and the second connecting rod 33 on the supporting mechanism 10.
Further, the first link 32 and the second link 33 are respectively hinged to the top end of the frame 50. Specifically, the top wall of the top end of the frame 50 is provided with a first connecting piece 52, and the 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 respectively hinged with one end of the first connecting rod 32 and one end of the second connecting rod 33, and the first connecting piece 52 and the second connecting piece 53 form a right-angle connecting structure and are matched with the first right-angle connecting piece 11 to realize the hinging of the 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, 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 ascends and descends, the seat 21 ascends and descends through the transmission of the fourth connecting rod 23 and the third connecting rod 22. Specifically, the hinge point of the seat 21 and the third link 22 is used to realize the rotational adjustment of the position of the seat 21, and further realize the folding and unfolding of the seat 21, so as to meet different requirements of users for getting on and off the vehicle. Further, the seat 21 and the third link 22 are switched between a fixed connection and a rotating connection by a mechanical locking means (e.g. a locking wrench). Specifically, the driving member 31 is taken as an example of an electric push rod, when the vehicle body is switched from the sitting posture to the standing posture, the driving member 31 extends to jack 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 jack 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 the third connecting rod 22 to move upwards 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 the standing posture to the sitting posture, the driving part 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 connecting rod 33 moves downwards to press down the fourth connecting rod 23, the fourth connecting rod 23 moves downwards to press down the third connecting rod 22, and hinge points at two ends of the third connecting rod 22 rotate to be matched with the third connecting rod 22 to move downwards to drive the seat 21 to move downwards, so that the standing posture is switched to the sitting posture.
Further, the active member 31, the first link 32, the second link 33, the third link 22, and the fourth link 23 are all symmetrical about the same vertical plane, so as to facilitate the balance design of the vehicle body.
Further, the driving part 31 and the fourth connecting rod 23 are connected below the second connecting rod 33 through the second right-angle connecting part 34, so that the using amount of the connecting parts is reduced, and the design difficulty of the vehicle body is simplified.
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 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 thereof is hinged to the first end 621 of the chain 62; the chain 62 is arranged in a curved manner, 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 connecting rod 22 rotates, the first rotating shaft 611 is driven to rotate, so as to drive the second rotating shaft 612 to drive the chain 62 to move, so as to drive 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 is lifted, the third link 22 rotates relative to the rotating shaft of the fifth link 61 and further rotates along with the first rotating shaft 611, so that the shaft of the fifth link 61 rotates relative to the first rotating shaft 611, the second rotating shaft 612 is longitudinally displaced to apply a longitudinal pushing force to the first end 621 of the chain 62, so that the chain 62 is longitudinally displaced, and the second end 622 of the chain 62 moves along the front-rear direction of the vehicle body, so that the pushing rod 63 moves along the front-rear direction of the vehicle body; and when the push rod 63 moves along the front-back direction of the vehicle body, the movable seat 42 can be driven to move along the front-back direction of the vehicle body, so that the length of the base 40 can be adjusted, the gravity center of the human body always falls in the base 40 in the sitting process when the vehicle body is switched to the sitting posture, and the human body is prevented from tilting backwards and falling down.
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 slot 511, and the chain 62 moves in the slot 511. The movement locus of the chain 62 is defined by the catching groove 511. The slot 511 is adjacent to a section of the channel 5111 of the fifth link 61 and extends along the moving track of the second rotating shaft 612 of the fifth link 61, so that the chain 62 moves to match the movement of the second rotating shaft 612.
Further, a fixing plate 51 is disposed at the left or right side of the frame 50 to facilitate the connection of the fifth link 61 with the third link 22.
Further, the peripheral side contour of the fixing plate 51 extends along the extending direction of the chain 62 to improve the visual aesthetic feeling.
Further, the fixing plate 51 includes a first fixing plate 501 and a second fixing plate 502 to facilitate assembly of the fixing plate 51. The first fixing plate 501 is a plate-shaped structure for fixing the upper bending section of the chain 62, and the second fixing plate 502 is an L-shaped structure for fixing the lower bending 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 rotate in opposite directions when rotating, and the third link 22 and the fifth link 61 are respectively disposed at two sides of a hinge point of the third link 22 and the fifth link 61, so that the movement process of the fifth link 61 rotating to drive the chain 62 does not interfere with the movement of the third link 22. 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 upward from the first end 621 and then bends to extend downward to the second end 622. Let the chain 62 extend upward from the first end 621 as a first chain segment 623, extend downward after bending from the end of the first chain segment 623 as a second chain segment 624, and extend in the longitudinal direction of the vehicle body from the end of the second chain segment 624 as a third chain segment 625; 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 up (the sitting posture is switched to the standing posture), the third link 22 moves up, the fifth link 61 rotates downward, the first end 621 of the chain 62 drives the first chain segment 623 to move downward, the second chain segment 624 moves upward, and finally the third chain segment 625 drives the movable seat 42 to move close to the fixed seat 41, so as to shorten the length of the base 40. Otherwise, the principle is similar when the vehicle body descends, and the description is omitted. The purpose of switching the sitting and standing of the vehicle body and adjusting the length of the base 42 is realized by limiting the movement direction of the third connecting rod 22 and the fifth connecting rod 61 and limiting the bending direction of the chain 62, and the vehicle body structure is simplified at the same time, so that the flexibility of the rollator body 100 is improved.
It should be understood that the first end 621 and the second end 622 of the chain 62 may respectively represent end links of the chain 62, and may also be links near the end points of the chain 62. In order to effectively utilize the transmission of the chain 62, the first end 621 and the second end 622 of the chain 62 respectively represent two end links of the chain 62.
In an embodiment, as shown in fig. 1, 2, and 4, the push rod 63 is movably connected below the fixing base 41 and hidden, so as to improve the aesthetic feeling of the vehicle body. In one embodiment, the fixing base 41 is a plate-shaped 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 base 41 is provided with a through groove, the second fixing plate 502 is an L-shaped structure, and the transverse side plate of the second fixing plate 502 is inserted into the through groove of the fixing base 41, so that one section of chain of the chain 62 located on the second fixing plate 502 is located below the fixing base 41, and the push rod 63 located below the fixing base 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 through a latch 64, and the latch 64 has a simple and compact structure.
In an embodiment, as shown in fig. 4, the push rod 63 is an optical axis structure, and the push rod 63 has a simple structure and is easily movably connected to the fixing base 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 into the through hole, and the assembling structure is simple.
In one embodiment, as shown in fig. 1, at least two rows of walking wheels at the bottom of the fixing base 41 are electric wheels 412 to drive the rollator body 100 to walk; the movable seat 42 is a U-shaped structure, and the traveling wheels arranged at the bottoms of the two ends of the movable seat 42 are universal wheels 421. Specifically, the movable seat 42 is of a U-shaped structure, which is simple in structure and stable in support, and the movable seat 42 of the U-shaped structure is conveniently inserted into two sides of furniture such as a toilet and a chair, 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, the weight of the movable seat is lower than that of the fixed seat 41, and the stability of the movable seat 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 for 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 perpendicular to each other, 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 support mechanism 10 is provided with a remote control 70 for controlling the moving direction of the vehicle body. Further, the remote control 70 is a joystick.
In one embodiment, as shown in fig. 1 and 2, the supporting mechanism 10 further includes a chest protecting plate 13, an outer surface of the chest protecting plate 13 facing the human body is a concave curved surface for fitting the front contour of the upper body of the human body and 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 plate 13 and/or for adjusting the horizontal and vertical positions of the two armpit supporting members 12, respectively, so as to adapt to the body sizes of different body heights.
In one embodiment, as shown in FIGS. 1 and 2, the support mechanism further includes an auxiliary armrest 14 for holding by a caregiver to push the rollator body 100.
In one embodiment, as shown in fig. 1, 2 and 3, the rollator body 100 further comprises two knee protection mechanisms 80 for limiting the knees of the human body and limiting the lower limbs of the human body. Further, the two pairs of knee protecting mechanisms 80 are symmetrically arranged.
Further, the knee protecting mechanism 80 comprises a knee protecting plate 81, a telescopic member 82 and a knee protecting frame 83, wherein the knee protecting plate 81 is used for abutting against the knee of the human body; the knee guard 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 guard 81. The extension member 82 is connected to a knee bolster frame 83, and the knee bolster frame 83 is connected to the frame 50. The knee guard 83 is vertically movable to adjust the vertical height of the knee guard 81. And further, the front, back, up and down positions of the knee protecting plate 81 are adjusted to meet the requirements of users with different heights and leg lengths.
The user boarding method comprises the following steps:
s11, the 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 maintained to be folded;
s12, a user puts feet on the fixing seat 41, fixes the lower leg and the waist by using a safety belt, and supports 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 hip of the user;
and S15, the user can control the walking aid vehicle to run, and can switch sitting posture and standing posture by controlling the driving piece 31.
The user getting-off method comprises the following steps:
s21, controlling the rollator body 100 to move to a proper position in front of a chair or a bed, and adjusting the posture of the user to a standing posture;
s22, supporting the armpit by using the armpit supporting piece 12;
s23, folding seat 21;
s24, controlling the active part 31 to fall, and placing the user at the chair or the bedside;
s25, the user releases the fixation of the waist and the lower leg;
s26, the remote control rollator body 100 is moved to a proper position.
When a user is on a chair or a bedside and wants to get on, or the user wants to get off the walker body 100 to the bedside or the chair, the seat 21 may be folded up in order to ensure that the walker body 100 can be moved to a position closest to the bed or the chair; when the user uses the rollator body 100, the seat 21 can be unfolded to support the buttocks to ensure the safety of the user, no matter in a standing posture or in a sitting posture. 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 when the seat 21 is turned over to the right position, the seat 21 is locked in a mechanical locking mode.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A rollator for preventing falling, sitting and standing comprises an rollator body (100), characterized in that the rollator body (100) comprises:
a support mechanism (10) for supporting the upper limbs of the human body;
a seat mechanism (20) for supporting the buttocks of a human body;
the lifting mechanism (30) is respectively hinged to the supporting mechanism (10) and the seat mechanism (20) so as to drive the supporting mechanism (10) and the seat mechanism (20) to move up and down and switch the sitting posture;
the base (40) is 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), and the gravity center of a user is positioned in the vertical projection area of the base (40) in two postures of sitting and standing.
2. The crash-proof and fall-down-proof dual-purpose rollator according to claim 1, further comprising a frame (50) fixed on the fixing base (41); the lifting mechanism (30) is hinged on the rack (50).
3. The crash-proof and lodging-resistant dual-purpose rollator according to claim 2, wherein the lifting mechanism (30) comprises an active member (31) and a first connecting rod (32) and a second connecting rod (33) which are arranged in parallel up and down on 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 rack (50);
the driving piece (31) ascends and descends to drive the first connecting rod (32) and the second connecting rod (33) to ascend and descend synchronously, so that the supporting mechanism (10) ascends and descends.
4. The crash-proof and fall-down-proof dual-purpose rollator according to claim 3, wherein the bottom of the support mechanism (10) is provided with a first right angle connector (11); the upper plate (111) of the first right-angle connecting piece (11) is horizontally arranged; an upper plate (111) and a 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 fall arrest and station bi-purpose rollator according to claim 3, wherein the seat mechanism (20) comprises a seat (21), a third link (22), a fourth link (23); two ends of the third connecting rod (22) are respectively hinged to the seat (21) and the rack (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 seat (21) is lifted through the transmission of the fourth connecting rod (23) and the third connecting rod (22).
6. The rollator of claim 5 wherein the pushing mechanism comprises a fifth link (61), a chain (62), a push rod (63); a first rotating shaft (611) of the fifth connecting rod (61) is coaxially connected with a rotating shaft of the third connecting rod (22), and a second rotating shaft (612) of the fifth connecting rod is hinged to a first end (621) of the chain (62); the chain (62) is arranged in a bent mode, 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 (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, and therefore the push rod (63) is driven to drive the movable seat (42) to move along the front and back directions of the vehicle body.
7. The crash-proof, reverse-sitting and standing dual-purpose rollator according to claim 6 wherein the frame (50) is provided with a fixing plate (51); the fixed 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 motion track of the second rotating shaft (612).
8. The crash tolerant dual use walker as claimed in claim 6, wherein the third and fifth links (22, 61) are moved in opposite directions; the chain (62) extends upward from the first end (621) and then bends to extend downward to the second end (622).
9. The crash-proof and fall-down-proof dual-purpose rollator according to claim 1, wherein at least two walking wheels at the bottom of the fixing base (41) are electric wheels (412); the movable seat (42) is of a U-shaped structure, and the walking wheels arranged at the bottoms of the two ends of the movable seat (42) are universal wheels (421).
10. A crash-proof, sit-stand dual purpose rollator according to claim 1 wherein the support mechanism (10) is provided with two underarm supports (12); and a remote control part (70) is arranged on the supporting mechanism (10) and used for controlling the motion direction of the vehicle body.
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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 |
|---|---|---|---|
| CN202110481697.9A CN113101152B (en) | 2021-04-30 | 2021-04-30 | Anti-falling sitting and standing dual-purpose rollator |
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| Publication Number | Publication Date |
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| CN113101152A true CN113101152A (en) | 2021-07-13 |
| CN113101152B 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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| CN114767474A (en) * | 2021-11-24 | 2022-07-22 | 杭州科技职业技术学院 | Rehabilitation device |
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| CN113101152B (en) | 2023-05-12 |
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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 |
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