CN212592764U

CN212592764U - Anti-tilting wheelchair

Info

Publication number: CN212592764U
Application number: CN202021449255.3U
Authority: CN
Inventors: 王尔琪
Original assignee: Changzhou Zhongjin Medical Devices Co ltd
Current assignee: Changzhou Zhongjin Medical Devices Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-26
Anticipated expiration: 2030-07-21

Abstract

The utility model provides an anti-tilting wheelchair, which comprises a control frame, a plurality of rotating wheel assemblies symmetrically arranged at two sides of the control frame and a height adjusting assembly connected with the rotating wheel assemblies and the control frame, wherein the rotating wheel assemblies comprise self-driven wheels and connecting plates, the height adjusting assembly comprises a plurality of hinged rods and height adjusting cylinders connected between the connecting plates and the control frame, two ends of the hinged rods are respectively hinged to the connecting plates and the control frame, two ends of the height adjusting cylinders are both hinged to the connecting plates and the control frame, an acute angle is always kept between the height adjusting cylinders and the hinged rods, the multi-layer rectangular frame structure can be controlled to deform after the height adjusting cylinders are started, the connecting plates and the self-driven wheels can move parallel to the gravity center direction of the control frame, the height of the self-driven wheels can be adjusted by the height adjusting cylinders, the connecting limit of the hinged rods can be adjusted to the, the probability of the wheelchair turning on one side is reduced.

Description

Anti-tilting wheelchair

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a prevent wheelchair that inclines.

Background

When the movable frame on the wheelchair is used and passes through a steep slope, because the four wheels of the wheelchair cannot be always positioned on the same horizontal plane, the plane of the wheelchair bearing the human body is not always horizontal, the sitting center of gravity of a patient is unbalanced, the wheelchair is easy to roll over (or forwards and backwards overturns), and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the four wheels of the moving frame of the wheelchair are not on the same horizontal plane when passing through the ramp.

The utility model provides a technical scheme that its technical problem adopted is: an anti-tilting wheelchair comprises a control frame, a plurality of rotating wheel assemblies symmetrically arranged on two sides of the control frame and a height adjusting assembly connected with the rotating wheel assemblies and the control frame, wherein each rotating wheel assembly comprises a self-driving wheel arranged on the control frame and a connecting plate arranged at the axle center position of the self-driving wheel, the number of the self-driving wheels is at least four, the height adjusting assembly comprises a plurality of hinged rods connected between the connecting plate and the control frame and a height adjusting cylinder, two ends of each hinged rod are respectively hinged to the connecting plate and the control frame, the connecting plate, the hinged rods and the control frame form an easily deformed multi-layer rectangular frame structure after being connected, two ends of each height adjusting cylinder are hinged to the connecting plate and the control frame, and an acute angle is always kept between each height adjusting cylinder and the hinged rods, after the height adjusting cylinder is started, the multi-layer rectangular frame structure can be controlled to deform, and the connecting plate and the self-driven wheels can move in a direction parallel to the gravity center of the control frame.

Further, the hinge rods are connected to two side positions of the connecting plate, and the height adjusting cylinder is connected to the middle position of the connecting plate.

Further, the control frame comprises a suspension frame, and the hinge rod and the height adjusting cylinder are both hinged to the suspension frame.

Furthermore, the rotating wheel assembly further comprises a plurality of auxiliary wheels, the auxiliary wheels are mounted on the self-driving wheel, and the wheel diameter of the auxiliary wheels is smaller than that of the self-driving wheel.

Further, the wheelchair further comprises a humanoid fold pad, and the auxiliary wheel is further mounted to an end of the humanoid fold pad.

Furthermore, the suspension bracket further comprises a bearing plate arranged on the control frame, a power supply is arranged on the bearing plate, and the power supply is electrically connected with the self-driven wheel.

Furthermore, the control frame further comprises a base, the base is installed on the suspension frame, a horizontal sensor is installed on the base, and the horizontal sensor is electrically connected with the self-driven wheel.

The beneficial effects of the utility model are that, axle center position at the self-driving wheel sets up the connecting plate, and utilize hinge bar swing joint control frame and connecting plate, form the very easily deformable rectangle frame structure, swing joint altitude mixture control cylinder in rectangle frame structure simultaneously, the regulation of activity regulation through activity regulation cylinder, can make the rectangle frame structure carry out controllable deformation, drive reciprocating of self-driving wheel parallel state, adjust the height of each self-driving wheel to the road conditions, thereby reduce the degree of jolting of wheelchair when road conditions through unevenness, reduce the probability that the wheelchair takes place to turn on one's side, avoid causing the influence to patient's personal safety.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of the wheelchair of the present invention;

FIG. 2 is another perspective view of the wheelchair of FIG. 1 (with the humanoid fold pad and base omitted);

FIG. 3 is a perspective view of the lift assembly and portions of the components of the wheelchair shown in FIG. 1;

FIG. 4 is a perspective view of the wheel assembly, height adjustment assembly and angle adjustment assembly shown in FIG. 1;

FIG. 5 is a schematic view of the wheelchair of FIG. 1 in the process of moving a patient;

in the figure: wheelchair-100, control frame-10, humanoid folding cushion-20, suspension bracket-110, protective box-120, base-130, rotating plate-131, rotating frame-132, rotating cylinder-133, lifting component-30, rotating wheel component-40, height adjusting component-50, angle adjusting component-60, frame body-111, bearing plate-112, power supply-113, lifting rod-310, control rod-320, abutting plate-330, lifting cylinder-340, stroke limiting block-114, self-driving wheel-410, connecting plate-420, auxiliary wheel-430, hinged rod-510, height adjusting cylinder-520, rotating bracket-610, self-rotating rod-620, control component-630, curved rod-611, control shaft-631, etc, A limit connecting rod-621, a limit curved groove-115 and a limit rod-622.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1 and 2, the utility model provides a wheelchair 100 convenient for patient moving, including control frame 10 and the humanoid pad 20 of rolling over installed on control frame 10, humanoid pad 20 of rolling over can carry out the adjustment corresponding with the human form, and control frame 10 sets up in the below of humanoid pad 20, through the removal of control frame 10, can drive humanoid pad 20 and move with the human body on it.

The control frame 10 includes a suspension frame 110, a protective casing 120 fixedly mounted on the suspension frame 110, and a base 130 fixed on the protective casing 120. Humanoid pad 20 is rotationally installed on base 130, install horizontal sensor (not shown) on base 130 towards the side of protection box 120, horizontal sensor is used for monitoring whether base 130 is in horizontal position, still be provided with control terminal (not shown) on the plane that deviates from humanoid pad 20 on base 130, horizontal sensor can be with detecting data transmission to control terminal on, control terminal adjusts base 130 according to the inclination that detects, takes place to turn on one's side after avoiding humanoid pad 20 to incline. The protective case 120 is perpendicular to the base 130, and the base 130 is detachably mounted to the protective case 120.

Preferably, the base 130 comprises a rotating plate 131 and a rotating frame 132, the human-shaped folding pad 20 is rotatably mounted on the rotating plate 131, and the human-shaped folding pad 20 can be changed from a human sitting posture to a lying posture parallel to the rotating plate 131 after being folded. The rotating frame 132 is fixedly installed on the side surface of the rotating plate 131, which is far away from the humanoid folding pad 20, one end of the rotating frame 132 is hinged to the top of the protective box body 110, the rotating frame 132 is hinged with a rotating cylinder 133, the cylinder body of the rotating cylinder 133 is hinged in the protective box body 110, the piston shaft of the rotating cylinder 133 is hinged to the middle position of the rotating frame 132, after the rotating cylinder 133 is started, when the piston shaft extends out or retracts, the rotating plate 131 and the humanoid folding pad 20 can be driven to rotate relative to the protective box body 120, the angle of the humanoid folding pad 20 relative to the protective box body 120 is changed, when the wheelchair 100 is close to a bed or a sofa, the overturning of the humanoid folding pad 20 can be realized through the action of the rotating cylinder 133, and therefore, a patient can slide to the sofa.

The wheelchair 100 further includes a lifting assembly 30 provided on the suspension frame 110, a plurality of wheel assemblies 40 symmetrically provided on both sides of the suspension frame 110, a height adjusting assembly 50 connecting the wheel assemblies 40 and the suspension frame 110, and an angle adjusting assembly 60.

The hanging bracket 110 includes a frame body 111 having a square frame structure and a bearing plate 112 fixedly laid on the frame body 111, and the protective case 120 is fixedly mounted on the bearing plate 112. The bearing plate 112 is also provided with a power source 113, the power source is preferably a lithium battery, and the power source 113 provides moving power for the wheelchair. The four corners of the frame body 111 extend out of the edge of the bearing plate 112.

The lifting assembly 30 includes a plurality of lifting rods 310 constituting a scissor structure, a control rod 320 hinged on the lifting rods 310, a holding plate 330 mounted on the top end of the scissor structure, and a lifting cylinder 340 hinged on the control rod 320.

As shown in fig. 3, the lifting rods 310 are hinged to each other to form a scissor structure, the bottom ends of the scissor structure are slidably mounted on the bearing plate 112, specifically, the bearing plate 112 is fixedly mounted with the stroke limiting block 114, the stroke limiting block 114 is provided with a waist-shaped groove (not shown), the bottom ends of the scissor structure are hinged in the waist-shaped groove, the abutting plate 330 is disposed in the protective box 120, the abutting plate 330 is U-shaped, the top ends of the scissor structure are hinged to the wing plate of the abutting plate 330, the end portions of the lifting rods 310 can slide relative to the wing plate of the abutting plate 330, and the cylinder body of the rotating cylinder 133 is hinged to the abutting plate 330. The control rod 320 is disposed close to the carrier plate 112, the control rod 320 is located at the middle position of the lifting rod 310 in the scissor-like structure, the cylinder body of the lifting cylinder 340 is hinged to the carrier plate 112, and the piston shaft of the lifting cylinder 340 is hinged to the control rod 320.

After the lifting cylinder 340 is started, the control rod 320 moves in a direction away from or close to the bearing plate 112 under the driving of the lifting cylinder 340, so as to drive the scissor structure formed by the lifting rods 310 to deform, the lifting rods 310 at the two ends of the scissor structure can move in a way along the wing plates of the abutting plate 330 and the stroke limiting block 114, and the base 130 can adjust the height of the human-shaped cushion 20 relative to the protection box 120 under the pushing of the scissor structure.

The rotating wheel assembly 40 includes at least four self-driving wheels 410 mounted on the frame 111 and a connecting plate 420 mounted at an axial center position of the self-driving wheels 410, and an electric brush (not shown) electrically connected to the power source 113 is mounted in the self-driving wheels 410, and when the electric brush is energized, the self-driving wheels 410 are driven to rotate correspondingly, so as to drive the wheelchair 100 to move. The wheelchair 100 of the present embodiment is driven to rotate by a four-wheel drive method, and the specific driving method refers to a driving technology generally used in the field of electric vehicles. Preferably, the rotating wheel assembly 40 further includes at least four auxiliary wheels 430, wherein two auxiliary wheels 430 are fixedly mounted on the humanoid fold pad 20, two auxiliary wheels 430 are fixedly mounted on the self-driving wheel 410 along a direction away from the humanoid fold pad 20, the wheel diameter of the auxiliary wheels 430 is smaller than the diameter of the self-driving wheel 410, the auxiliary wheels 430 are connected to the self-driving wheel 410 through a bending rod, and the lowest end of the auxiliary wheels 430 is located above the lowest end of the self-driving wheel 410 after being bent, so that when a road section with an excessive gradient is experienced, the auxiliary wheels 430 contact the ground, and then the self-driving wheel 410 can be driven to decelerate and stop rotating through a speed difference mode, thereby realizing deceleration and sudden stop of the wheelchair 100.

As shown in fig. 4, the height adjusting assembly 50 includes a plurality of hinge rods 510 movable with respect to the suspension frame 110 and a height adjusting cylinder 520, the hinge rods 510 being hinged to both sides of the link plate 420, it being understood that the self-driving wheel 410 is connected to the suspension frame 110 through the hinge rods 510. The hinged rod 510 is connected with the suspension bracket 110 and the connecting plate 420 to form a flexible multi-layer rectangular frame structure. Preferably, the hinge rods 510 at both sides of the link plate 420 are arranged in parallel with each other, and the direction of rotation of the hinge rods 510 around the link plate 420 is the same.

The height adjusting cylinder 520 is arranged in the middle of the connecting plate 420, the piston shaft of the height adjusting cylinder 520 is hinged to the connecting plate 420, and an acute angle is always kept between the height adjusting cylinder 520 and the hinge rod 510, it can be understood that when the height adjusting cylinder 520 is started, the cuboid frame structure formed by the hinge rod 510 can be forcibly driven to deform by pushing or retracting the piston shaft, and therefore the self-driven wheel 410 can be moved in a state parallel to the frame body 111 all the time. In other embodiments, the height adjustment assembly 50 can be fixedly connected to the suspension bracket 110 and the connecting plate 420 only by the height adjustment cylinder 520, and the height of the self-driving wheel 410 relative to the suspension bracket 110 can be adjusted under the driving of the height adjustment cylinder 520.

The angle adjusting assembly 60 includes a rotating bracket 610 connected to the hinge lever 510, a rotation lever 620 fixedly installed on the rotating bracket 610, and a manipulation member 630 controlling the rotation of the rotation lever 620.

The rotating bracket 610 is a square frame structure parallel to the connecting plate 420, the hinge rod 510 is hinged to the side of the rotating bracket 610, the cylinder body of the height adjusting cylinder 520 is hinged to the middle position of the rotating bracket 610 (the rotating shaft for inserting and connecting the hinge rod 510 and the height adjusting cylinder 520 in the rotating bracket 610 is not shown in the drawing), the rotating bracket 610 is provided with a curved rod 611, the curved rod 611 and the bearing plate 112 are parallel and corresponding, two ends of the curved rod 611 are arranged near the hinge rod 510, the rotation rod 620 is fixedly connected to the curved rod 611, and the rotation rod 620 can relatively rotatably penetrate through the bearing plate 112. The control member 630 can control the rotation rod 620 to rotate relative to the carrier plate 112.

It is understood that in one embodiment, the operating member 630 includes an operating shaft 631, the operating shaft 631 is a rotating shaft of a driving motor, a body of the driving motor is mounted on the bearing plate 112, and the operating shaft 631 drives the rotation rod 620 to rotate by means of gear engagement. In another embodiment, the control shaft 631 of the control member 630 may drive the rotation rod 620 to rotate in a rack-and-pinion manner, and in another embodiment, the control shaft of the control member 630 may drive the rotation rod 620 to rotate in a belt pulley manner. In summary, the structure manner of the operating member 630 for driving the rotation of the rotation rod 620 is not particularly limited in this embodiment. The rotation of the rotation rod 620 drives the rotation bracket 610 to rotate, and the rotation bracket 610 can change the angle of the self-driving wheel 410 relative to the bearing plate 112 through the hinge rod 510 and the connection plate 420, so as to adjust the rotation angle of the wheelchair 100.

Preferably, the end part of the rotation rod 620 far away from the curved rod 611 is fixedly provided with a limiting connecting rod 621, the bearing plate 112 is provided with a limiting curved groove 115, the limiting curved groove 115 is an arc-shaped waist-shaped groove, the limiting rod 622 is slidably inserted in the limiting curved groove 115, the limiting rod 622 is fixedly connected to the limiting connecting rod 621, when the rotation rod 620 rotates, the stroke of the limiting rod 622 is limited through the limiting curved groove 115, the rotation angle of the rotation rod 620 can be limited, so that the rotation bracket 610, the hinge rod 510 and the connecting plate 420 can control the rotation angle of the self-driving wheel 410, and the phenomenon of side turning caused by overlarge angle when the wheelchair 100 turns is avoided.

Height adjustment cylinder 520, control piece 630 and horizontal sensor common electric connection to control terminal on, horizontal sensor transmits the angle of base 130 slope to control terminal on, according to the inclination information of collecting in the control terminal, when inclination surpassed the safety interval, the adjustable height adjustment cylinder 520 that each self-driven wheel 410 corresponds stretches out or the state of retracting, it is more specific, can carry out the analysis to the signal of horizontal sensor transmission in the control terminal, judge the incline direction of base 130, in the incline direction, the height adjustment cylinder 520 that self-driven wheel 410 that the focus is lower corresponds starts to stretch out, self-driven wheel 410 moves down, change to reasonable interval until the inclination of base 130 in, thereby can prevent that wheelchair 100 from taking place to turn on one's side.

When turning around or turning around on a slope, the height adjusting cylinder 520 is started, and simultaneously, the corresponding control member 630 is started, and the rotation angle of the self-driving wheel 410 can be changed through the self-rotating rod 620, so that the steering process of the wheelchair 100 on the slope is ensured to be stably performed.

When the wheelchair 100 is used, a user sits on the humanoid folding pad 20, when the user needs to move from the wheelchair 100 to a bed, the humanoid folding pad 20 can be changed into an extension state corresponding to a lying posture according to the user requirement, the humanoid folding pad 20 is close to the vicinity of the bed body through the movement of the self-driven wheels 410, the lifting cylinder 340 in the lifting assembly 30 is started, the shape of the scissor structure formed by the lifting rods 310 is changed, the humanoid folding pad 20 is enabled to ascend to be close to the edge of the bed body, then the rotating cylinder 133 is started, under the abutting action of the rotating cylinder 133, the base 130 bearing the humanoid folding pad 20 is overturned, and the user can slide or roll onto the bed body even if the user is carried onto the bed body.

In the embodiment shown in fig. 5, when the human-shaped folding pad 20 is under the action of the lifting assembly 30, it can be adjusted to a state slightly higher than the bed body, and the angle of the self-driving wheel 410 relative to the frame body 111 is adjusted, so as to cause the inclination of the wheelchair 100, and the edge of the human-shaped folding pad 20 far away from the bed is higher than the edge near the bed, specifically, the height adjusting cylinder 520 near the bed starts to contract, the height adjusting cylinder 520 far away from the bed starts to extend, and the human-shaped folding pad can be tilted by making a height difference, so that the user can move the patient conveniently.

When the wheelchair 100 encounters a rugged road condition and the base 130 is tilted, the corresponding height adjusting cylinder 520 is started according to the inclination angle of the base 130, and after the height adjusting cylinder 520 is started, the angle of the hinge rod 510 connecting the frame body 111 and the connecting plate 420 can be changed, so that the height of the self-driving wheel 410 relative to the frame body 111 is changed, and therefore, the base 130 can be always kept in a horizontal state when the self-driving wheel 410 is in contact with the ground, and a user is prevented from rolling over when using the wheelchair 100.

In the above-mentioned use process, when the wheelchair 100 is steered in a place with poor road conditions, the control member 630 can be used to adjust the rotation angle of the rotation rod 620, so as to drive the rotation bracket 610 to rotate, when the rotation bracket 610 rotates, the rotation rod 510 and the connecting plate 420 drive the self-driving wheel 410 to change the direction, and while changing the advancing direction of the self-driving wheel 410, the above-mentioned height adjustment process can be repeatedly performed, so that the process of turning a slope can be stably completed, and further, the user can be prevented from turning over when using the wheelchair 100.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An anti-tip wheelchair, comprising: comprises a control frame, a plurality of rotating wheel assemblies symmetrically arranged at two sides of the control frame and a height adjusting assembly connecting the rotating wheel assemblies and the control frame, the rotating wheel assembly comprises a self-driving wheel arranged on the control frame and a connecting plate arranged at the axle center of the self-driving wheel, the height adjusting assembly comprises a plurality of hinged rods connected between the connecting plate and the control frame and a height adjusting cylinder, two ends of the hinged rod are respectively hinged to the connecting plate and the control frame, the connecting plate, the hinged rod and the control frame are connected to form an easily-deformed multi-layer rectangular frame structure, both ends of the height adjusting cylinder are hinged to the connecting plate and the control frame, the height adjusting cylinder can control the deformation of the multi-layer rectangular frame structure after being started, the connecting plate and the self-driving wheel can move in parallel to the gravity center direction of the control frame.

2. An anti-tip wheelchair as claimed in claim 1, wherein: the hinged rods are connected to the positions of two sides of the connecting plate, and the height adjusting cylinder is connected to the middle position of the connecting plate.

3. An anti-tip wheelchair as claimed in claim 1, wherein: the control frame comprises a suspension frame, and the hinged rod and the height adjusting cylinder are hinged to the suspension frame.

4. An anti-tipping wheelchair as claimed in claim 3, wherein: the rotating wheel assembly further comprises a plurality of auxiliary wheels, the auxiliary wheels are mounted on the self-driving wheels, and the wheel diameters of the auxiliary wheels are smaller than those of the self-driving wheels.

5. An anti-tipping wheelchair as claimed in claim 4, wherein: the wheelchair further comprises a humanoid folded cushion, and the auxiliary wheel is further mounted to the end portion of the humanoid folded cushion.

6. An anti-tipping wheelchair as claimed in claim 3, wherein: the suspension frame further comprises a bearing plate arranged on the control frame, a power supply is arranged on the bearing plate, and the power supply is electrically connected with the self-driven wheel.

7. An anti-tipping wheelchair as claimed in claim 3, wherein: the control frame further comprises a base, the base is installed on the suspension frame, a horizontal sensor is installed on the base, and the horizontal sensor is electrically connected with the self-driven wheel.