CN114631985A

CN114631985A - Foldable tricycle helps driving

Info

Publication number: CN114631985A
Application number: CN202210275958.6A
Authority: CN
Inventors: 熊志勇; 袁天棋; 刘绮
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-06-17
Anticipated expiration: 2042-03-21
Also published as: CN114631985B

Abstract

The invention relates to a foldable three-wheel rollator which comprises a front wheel, a first frame and a second frame, wherein the front parts of the first frame and the second frame are respectively connected with the front wheel, the rear parts of the first frame and the second frame are respectively provided with a rear wheel, and an accommodating vacancy is reserved between the rear parts of the first frame and the second frame. The folding lock catch is arranged between the first frame and the second frame, the folding lock catch has an unlocking state and a locking state, the rear portions of the first frame and the second frame are far away from each other to form an accommodating vacancy in the locking state, and the rear portions of the first frame and the second frame are abutted to each other in the unlocking state of the folding lock catch. The user can turn up the seat cushion for rest by pulling the zipper, the seat cushion is positioned at the center of the rollator, and the supports at the two sides can be used for holding hands and supporting, so that the safety and the comfort are improved; when the walking aid vehicle is held up to stand and stop, the gravity center of the body can not incline forwards, so that the risk of falling and injury caused by the fact that the walking aid vehicle is pushed to slide forwards accidentally is avoided.

Description

Foldable tricycle helps driving

Technical Field

The invention relates to the technical field of walking aids, in particular to a foldable three-wheeled walking aid vehicle.

Background

In life, some people who are inconvenient to walk, such as the old or people with disabled legs, often need to use walking aid equipment when going out. The walking aid vehicle is used as a walking assisting tool, has good supporting stability and can effectively help users with dyskinesia to walk.

The rollator of the prior art is usually a four-wheel rollator and is provided with a first frame and a second frame, both the first frame and the second frame are provided with front wheels and rear wheels, a connecting cross rod is often arranged between the rear ends of the first frame and the second frame, and both hands of a user can support the connecting cross rod to push.

It has the following technical problems: the four-wheel rollator occupies large space, is difficult to move in narrow space, has large turning radius, and is difficult for users to control the direction; when a user stands and stays by leaning on the connecting cross rod, the body gravity center is easy to incline forwards due to the fact that the body is far away from the walking aid vehicle, and the walking aid vehicle is pushed to slide forwards accidentally sometimes to cause falling injury.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to: the foldable three-wheel rollator is provided, when a user holds the rollator to stand and stop, the body gravity center can not incline forwards, and the risk of falling and injury caused by that the rollator is pushed to slide forwards accidentally is avoided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a foldable tricycle helps driving, includes front wheel, first frame and second frame, and the front portion of first frame and second frame is connected respectively in the front wheel, and the rear portion of first frame and second frame all is equipped with the rear wheel, leaves the holding vacancy between the rear portion of first frame and second frame.

Furthermore, a storage bag is arranged between the containing vacant site and the front wheel and connected with the first frame and the second frame.

Furthermore, a foldable seat cushion is arranged in the containing vacant position and connected to the rear end of the storage bag.

Further, the both sides portion of seatpad passes through the zip fastener with first frame and second frame respectively and is connected, and back is pulled up when the zip fastener, and the seatpad is upwards turned up and is the user state that can sit, and when the zip fastener loosen the back, the seatpad is vertical state of accomodating to the droop.

Further, the seat cushion is made of flexible materials.

Further, be equipped with folding hasp between first frame and the second frame, folding hasp buckle has unlocking state and locking state, and under the locking state, the rear portion of first frame and second frame is kept away from each other and is formed the holding vacancy, and under the folding hasp unblock state, the rear portion of first frame and second frame is butt each other.

Further, the folding lock catch comprises a first locking hinge piece, a second locking hinge piece, a lock plate and a spring, one end of the first locking hinge piece is hinged to the first frame, one end of the second locking hinge piece is hinged to the second frame, the other end of the first locking hinge piece is hinged to the other end of the second locking hinge piece, the first locking hinge piece and the second locking hinge piece are arranged in a staggered mode, the first locking hinge piece is provided with a first groove, the second locking hinge piece is provided with a second groove corresponding to the first groove, the spring and the lock plate are sequentially arranged from one end of the second locking hinge piece to the other end in the second groove, the lock plate is connected to the second groove in a sliding mode, the folding lock catch is in a locking state when the lock plate is inserted into the first groove and the second groove under the action of the spring, and the folding lock catch is in an unlocking state when the lock plate leaves the first groove and slides towards the spring direction along the second groove.

Furthermore, the first locking hinge piece is provided with a double-layer structure, the second locking hinge piece is embedded into the double-layer structure, the double-layer structure of the first locking hinge piece and the second locking hinge piece are respectively provided with corresponding through holes, and the rotating shaft is penetrated through the through holes.

Furthermore, the locking plate upper end is equipped with the gleitbretter, and the gleitbretter surface is equipped with anti-skidding structure.

Furthermore, the slip sheet is provided with an arc-shaped surface which is matched with the side wall of the rotating shaft, and the arc-shaped surface is abutted against the side wall of the rotating shaft.

In summary, the present invention has the following advantages:

during the use, first frame and second frame are held respectively as supporting to user's both hands, and the tricycle structure makes the rollator hold the direction of turning more easily, has less transformation radius simultaneously, makes things convenient for user's operation. When the walking aid cart is pushed, the body of a user can be positioned behind the walking aid cart and is in a slightly forward leaning state, so that the walking aid cart can be pushed better and the advancing direction can be controlled better. When the user needs to stand and stop, the accommodating vacant position is reserved between the rear parts of the first frame and the second frame, the user can move forwards for a short distance, the body enters the accommodating vacant position, the body is changed from a slightly forward-inclined state to a basically vertical state, and the distance between the body gravity center and the walking aid vehicle is shortened, so that the body gravity center cannot incline forwards when the user holds the walking aid vehicle to stand and stop, and the risk of falling and injury caused by the fact that the walking aid vehicle is pushed to slide forwards accidentally is avoided.

Drawings

FIG. 1 is a perspective view of the rollator of the present invention in use.

Fig. 2 is a schematic perspective view of the seat cushion of the present invention after being turned up.

Fig. 3 is a schematic perspective view of the rolled seat cushion according to the present invention.

FIG. 4 is a perspective view of the rollator of the present invention in a folded state.

Fig. 5 is a schematic perspective view of the folding buckle of the present invention.

Fig. 6 is an exploded view of the folding latch of the present invention.

Reference numerals:

11-handrails, 12-brake device, 13-front wheels, 14-rear wheels, 15-height adjusting knob, 16-storage bag, 17-barrier piece;

21-a first frame, 22-a second frame;

31-front support, 32-rear support, 33-bottom support, 34-front vertical bar, 35-rear vertical bar, 36-upper vertical bar;

41-seat cushion, 42-zipper;

5-folding latch, 51-first locking hinge, 511-first groove, 52-second locking hinge, 521-second groove;

61-rotating shaft, 62-locking plate, 63-sliding sheet and 64-spring.

Detailed Description

The present invention will be described in further detail below.

As shown in fig. 1-4, a foldable three-wheeled rollator comprises a front wheel 13, a first frame 21 and a second frame 22, wherein the front parts of the first frame 21 and the second frame 22 are respectively connected with the front wheel 13, the rear parts of the first frame 21 and the second frame 22 are respectively provided with a rear wheel 14, and an accommodating space is reserved between the rear parts of the first frame 21 and the second frame 22. The first frame 21 and the second frame 22 are provided with brake devices 12 for braking the rollator, and the brake devices 12 may be of various conventional technologies.

Compared with a four-wheel walking aid vehicle, the three-wheel walking aid vehicle has better stability and smaller turning radius, and a user can easily grasp the turning direction, thereby facilitating the operation of the user. When the walking aid vehicle is pushed, a user holds the first frame 21 and the second frame 22 of the walking aid vehicle with hands, the body of the user is positioned behind the walking aid vehicle, and the body of the user is slightly inclined forwards, so that the walking aid vehicle can be pushed better and the advancing direction can be controlled better. When the user needs to stand and stop, the accommodating vacant position is reserved between the rear parts of the first frame 21 and the second frame 22, the user can move forwards for a short distance, so that the body enters the accommodating vacant position between the first frame 21 and the second frame 22, the body is changed from a slightly forward inclined state to a basically vertical state, and the distance between the body gravity center and the walking aid vehicle is shortened.

In this embodiment, first frame 21 and second frame 22 all include front truck 31, rear bracket 32, bottom bracket 33, preceding montant 34, back montant 35, go up montant 36 and handrail 11, front bracket 31, rear bracket 32 and bottom bracket 33 are through preceding montant 34, back montant 35 and last montant 36 connect and form the triangle-shaped support, front bracket 31's lower extreme is connected in front wheel 13 through preceding montant 34, rear bracket 32's lower extreme is connected in rear wheel 14 through back montant 35, bottom bracket 33 both ends are connected respectively in preceding montant 34 and back montant 35, front bracket 31 and rear bracket 32's upper end is connected in handrail 11 through last montant 36. The armrest 11 is horizontally arranged, when the rollator is in an open state, a semi-enclosure ring is formed between the armrest 11 and the first frame 21 and the second frame 22, a user can support the left palm or the right palm or the elbow on the armrest 11, and the front wheels 13 and the two rear wheels 14 of the rollator stand on the ground in a triangular shape, so that stable support is provided for the user, and the user is prevented from standing unstably and falling down.

Preferably, the bottom bracket 33, the front vertical bar 34 and the rear vertical bar 35 are integrally formed as an H-shaped bracket. The upper vertical rod 36 and the handrail 11 are an integrally formed L-shaped bracket.

The upper vertical rod 36 is provided with a height adjusting knob 15 which can adjust the height of the upper vertical rod 36 on the rear bracket 32 and lock the height, thereby being suitable for users with different heights to use the walking aid vehicle.

A storage bag 16 is arranged between the containing space and the front wheel 13, and the storage bag 16 is connected to the first frame 21 and the second frame 22.

The storage bag 16 is nested between the first frame 21 and the second frame 22 through the cloth surface, specifically, two sides of the storage bag 16 are nested on the left front support 31 and the right front support 31 respectively, and the rear side of the storage bag 16 is nested on the left upper vertical rod 36 and the right upper vertical rod 36. The front support 31 can slide up and down and be locked on the front vertical rods 34 and the upper vertical rods 36, so that the height of the front support 31 is adjusted, the height of the storage bag 16 is adjusted, a user can take and place own articles from the storage bag 16 without bending down, the requirements of users with different heights can be met, and the front support is particularly suitable for old people with mobility inconvenience.

The triangular support is nested with the barrier piece 17, and the barrier piece 17 not only improves the appearance of the rollator, but also increases the protection range of a user sitting on the seat cushion 41 from the side.

In the containing vacancy, the rear end of the storage bag 16 is provided with a foldable seat cushion 41, and the seat cushion 41 is arranged between the left and the right baffle parts 17. The two side portions of the seat cushion 41 are connected to the left and right stoppers 17 by zippers 42. When the zipper 42 is pulled up, the seat cushion 41 is turned up to be in a sitting use state, and when the zipper 42 is loosened, the seat cushion 41 is dropped downwards to be in a vertical storage state.

Specifically, the initial end of each zipper 42 is located at the interface between the seat cushion 41 and the barrier 17, and the two branches of each zipper 42 are located on the seat cushion 41 and the barrier 17, respectively. Wherein, the branched half-rings on the seat cushion 41 are arranged around the seat cushion 41, and the branched path on the blocking member 17 is adapted to the folded side of the seat cushion 41. When the slide fastener 42 is gradually closed from the initial end, the seat cushion 41 and the barrier member 17 gradually increase the connecting area and finally turn up the seat cushion 41 to an approximately horizontal seating use state. The zipper 42 continues to be pulled upwardly and forwardly around the end of the seat cushion 41 until it reaches the terminating end of the zipper 42 at the upper end of the seat cushion 41. Because the whole path of the zipper 42 comprises 180-degree rotation, the zipper 42 is not easy to loosen after being pulled up, and the zipper 42 cannot be accidentally slipped off even if a user with large weight sits on the seat cushion 41, so that the seat cushion 41 can always keep stable supporting force, and a safe rest space can be provided for the user. After the user sits on the seat cushion 41, the two hands can naturally hold the rear supports 32 on the two sides, so that the safety factor is increased, and the two arms and the hands can have better rest.

When the zipper 42 is pulled in the opposite direction until the zipper 42 is completely released after returning to the initial end of the zipper 42, the seat cushion 41 is disconnected from the barrier member 17 and is turned from the flipped-up state to the free-hanging state, thereby providing a receiving space for a user to get in and out between the first frame 21 and the second frame 22.

The seat cushion 41 can be made of various flexible or hard materials, and in the embodiment, the seat cushion 41 is made of flexible cloth so as to fold the rollator and reduce the storage space of the rollator. When the seat cushion 41 is not in use, the freely hanging seat cushion 41 can be rolled up to keep clean.

As shown in fig. 1, 5, and 6, a folding buckle 5 is provided between the first frame 21 and the second frame 22, the folding buckle 5 has an unlocked state and a locked state, in the locked state, rear portions of the first frame 21 and the second frame 22 are away from each other to form an accommodation space, and in the unlocked state of the folding buckle 5, rear portions of the first frame 21 and the second frame 22 are abutted to each other.

Specifically, the folding catch 5 is disposed between the bag 16 and the front wheel 13, and includes a first locking hinge 51 and a second locking hinge 52, wherein one end of the first locking hinge 51 is hinged to the front bracket 31 of the first frame 21, one end of the second locking hinge 52 is hinged to the front bracket 31 of the second frame 22, and the other end of the first locking hinge 51 is hinged to the other end of the second locking hinge 52.

The first locking hinge 51 is provided with a double-layer structure, the second locking hinge 52 is embedded into the double-layer structure in a sliding manner, the double-layer structure of the first locking hinge 51 and the second locking hinge 52 are respectively provided with corresponding vertical through holes, and the rotating shaft 61 penetrates through the through holes of the first locking hinge 51 and the second locking hinge 52.

The double-layer structure is provided with a first groove 511, the first groove 511 is communicated with a through hole of the first locking hinge 51, the second locking hinge 52 is provided with a second groove 521 corresponding to the first groove 511, and the second groove 521 is communicated with the through hole of the second locking hinge 52. A spring 64 and a locking plate 62 are sequentially arranged in the second groove 521 from one end of the second locking hinge 52 to the other end, and the locking plate 62 is slidably connected to the second groove 521.

When the walker needs to be used, the rear parts of the first frame 21 and the second frame 22 are pulled outwards, the first frame 21 and the second frame 22 rotate back to back with the front wheel 13 as an axis, so that the first locking hinge 51 and the second locking hinge 52 rotate back to back with the rotating shaft 61 as an axis, and the included angle between the first locking hinge 51 and the second locking hinge is gradually increased. When the angle between the first groove 511 and the second groove 521 is a straight angle, the locking piece 62 moves forward under the force of the spring 64 to a certain distance to be inserted into the first groove 511 and to be kept embedded into the first groove 511 and the second groove 521. The locking plate 62 limits the first locking hinge 51 and the second locking hinge 52 from rotating continuously in the first groove 511 and the second groove 521, so that the folding lock catch 5 is kept in a straight shape, the folding lock catch 5 is in a locking state, and an accommodating vacancy is formed between the rear parts of the first frame 21 and the second frame 22;

when the rollator needs to be stored, the locking plate 62 is pulled, the locking plate 62 leaves the first groove 511 and slides towards the spring 64 along the second groove 521, the locking plate 62 does not limit the rotation of the first locking hinge 51 and the second locking hinge 52 any more, at this time, the folding lock catch 5 is in an unlocking state, the rear parts of the first frame 21 and the second frame 22 are pulled inwards, the first frame 21 and the second frame 22 rotate relatively around the front wheel 13, and the rear parts of the first frame 21 and the second frame 22 approach each other until abut against each other, so that the rollator has a small occupied space in the storage state.

When the rollator is again required to be used, the rear portions of the first frame 21 and the second frame 22 are simply pulled outwardly to rotate the first locking hinge 51 and the second locking hinge 52 back to back in a straight shape. When the first and

second recesses

511 and 521 are aligned, the locking piece 62 is automatically pushed into the first and

second recesses

511 and 521 by the force of the spring 64, so that the folding lock 5 is automatically restored to the locking state.

In order to more conveniently push the locking plate 62, a sliding piece 63 is arranged at the upper end of the locking plate 62, an anti-slip structure is arranged on the surface of the sliding piece 63, and a sliding arrow for prompting the sliding direction of a user is further arranged on the sliding piece 63. When the sliding piece 63 slides in the direction of the arrow, the sliding piece 63 drives the locking piece 62 to leave the first groove 511, and the locking state of the foldable lock catch 5 is released.

The side of the sliding sheet 63 is provided with an arc-shaped surface corresponding to the side wall of the rotating shaft 61, and when the folding lock catch 5 is in a locking state, the arc-shaped surface is abutted against the side wall of the rotating shaft 61.

The beneficial effects of the invention include:

1. the folding rollator is convenient to store, the sliding sheet 63 can be slid to release the locking state of the folding lock catch 5, and the rollator can be folded easily;

2. the seat cushion 41 can be turned up for rest by pulling the zipper 42, the seat cushion 41 is positioned at the center of the walking aid vehicle, the rear supports 32 at the two sides can be used for holding and supporting hands, and the safety and the comfort are improved;

3. the rollator is of a stable triangular structure, and is not easy to generate side turning in the use process;

4. the space utilization is reasonable, the frame gap is fully utilized, the storage bag 16 is arranged for storing daily articles, and the height of the storage bag 16 can be adjusted to adapt to users with different heights.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. A foldable tricycle helps car which characterized in that: the front portions of the first frame and the second frame are connected to the front wheels respectively, rear wheels are arranged at the rear portions of the first frame and the second frame, and an accommodating vacancy is reserved between the rear portions of the first frame and the second frame.

2. A foldable three-wheeled rollator according to claim 1, wherein: and a storage bag is arranged between the containing vacant site and the front wheel and is connected with the first frame and the second frame.

3. A foldable three-wheeled rollator according to claim 1, wherein: the containing vacant site is internally provided with a foldable seat cushion which is connected with the rear end of the storage bag.

4. A foldable three-wheeled rollator according to claim 3, wherein: the both sides portion of seatpad passes through the zip fastener with first frame and second frame respectively and is connected, and back is pulled up when the zip fastener, and the seatpad upwards turns up and is the user state that can sit, and when the zip fastener loosen the back, the seatpad is vertical state of accomodating that hangs down.

5. A foldable three-wheeled rollator according to claim 3, wherein: the seat cushion is made of flexible materials.

6. A foldable three-wheeled rollator according to claim 1, wherein: the folding lock catch is arranged between the first frame and the second frame, the folding lock catch has an unlocking state and a locking state, the rear portions of the first frame and the second frame are far away from each other to form an accommodating vacancy in the locking state, and the rear portions of the first frame and the second frame are abutted to each other in the unlocking state of the folding lock catch.

7. A foldable three-wheeled rollator according to claim 6, wherein: the folding lock catch comprises a first lock hinge piece, a second lock hinge piece, a lock plate and a spring, one end of the first lock hinge piece is hinged to the first frame, one end of the second lock hinge piece is hinged to the second frame, the other end of the first lock hinge piece is hinged to the other end of the second lock hinge piece, the first lock hinge piece and the second lock hinge piece are arranged in a staggered mode, the first lock hinge piece is provided with a first groove, the second lock hinge piece is provided with a second groove corresponding to the first groove, the spring and the lock plate are sequentially arranged in the second groove from one end of the second lock hinge piece to the other end, the lock plate is connected to the second groove in a sliding mode, the folding lock catch is in a locking state when the lock plate is simultaneously inserted into the first groove and the second groove under the action of the spring, and the folding lock catch is in an unlocking state when the lock plate leaves the first groove and slides towards the spring direction along the second groove.

8. A foldable three-wheeled rollator according to claim 7, wherein: the first locking hinge piece is provided with a double-layer structure, the second locking hinge piece is embedded into the double-layer structure, the double-layer structure of the first locking hinge piece and the second locking hinge piece are respectively provided with corresponding through holes, and the rotating shaft is arranged in the through holes in a penetrating mode.

9. A foldable three-wheeled rollator according to claim 8, wherein: the locking plate upper end is equipped with the gleitbretter, and the gleitbretter surface is equipped with anti-skidding structure.

10. A foldable three-wheeled rollator according to claim 9, wherein: the slip sheet is provided with an arc-shaped surface which is matched with the side wall of the rotating shaft, and the arc-shaped surface is abutted against the side wall of the rotating shaft.