CN114631985B

CN114631985B - Folding three-wheeled rollator

Info

Publication number: CN114631985B
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: 2023-04-21
Anticipated expiration: 2042-03-21
Also published as: CN114631985A

Abstract

The invention relates to a folding three-wheeled walker 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, rear wheels are arranged at the rear parts of the first frame and the second frame, and a containing gap is reserved between the rear parts of the first frame and the second frame. A 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 parts of the first frame and the second frame are mutually far away to form a containing vacancy in the locking state, and the rear parts of the first frame and the second frame are mutually abutted in the folding lock catch unlocking state. The user can turn up the seat cushion for rest after pulling up the zipper, the seat cushion is positioned at the center of the rollator, and the brackets on two sides can be used for holding hands and supporting, so that the safety and comfort are improved; when the walker is held to stand and stay, the gravity center of the body cannot incline forwards, so that the risk of falling injury caused by inadvertently pushing the walker to slide forwards is avoided.

Description

Folding three-wheeled rollator

Technical Field

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

Background

In life, people with inconvenient walking, such as the elderly or people with disabled legs, often need to use walking aid when going out. The walking aid vehicle is used as a walking aid, has good support stability and can effectively help a user 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, wherein the first frame and the second frame are respectively provided with a front wheel and a rear wheel, a connecting cross rod is often arranged between the rear ends of the first frame and the second frame, and two hands of a user can be supported on the connecting cross rod to push.

The technical problems are as follows: the four-wheel rollator occupies large space, is difficult to move in a narrow space, has large turning radius and is difficult for a user to control the direction; when a user leans against the connecting cross bar to stand and stay, the gravity center of the body is easy to incline forwards due to the long distance between the body and the rollator, and sometimes the user can unintentionally push the rollator to slide forwards to cause falling injury.

Disclosure of Invention

Aiming at the technical problems existing in the prior art, the invention aims at: the folding three-wheeled rollator is provided, when a user holds the rollator to stand and stay, the gravity center of the body cannot incline forward, and the risk of falling injury caused by inadvertently pushing the rollator to slide forward is avoided.

In order to achieve the above 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 in the front wheel respectively, and the rear portion of first frame and second frame all is equipped with the rear wheel, leaves the accommodation vacancy between the rear portion of first frame and second frame.

Further, a storage bag is arranged between the accommodating vacancy and the front wheel and is connected with the first frame and the second frame.

Further, a turnover seat cushion is arranged in the accommodating vacancy and is connected with the rear end of the storage bag.

Further, both sides of the seat cushion are respectively connected with the first frame and the second frame through the zippers, when the zippers are pulled up, the seat cushion is turned up to be in a sitting use state, and when the zippers are released, the seat cushion falls down to be in a vertical storage state.

Further, the seat cushion is made of a flexible material.

Further, be equipped with folding hasp between first frame and the second frame, folding hasp has unblock 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 accommodation vacancy, and under folding hasp unblock state, the rear portion of first frame and second frame butt each other.

Further, folding hasp includes first lock hinge piece, second lock hinge piece, locking plate and spring, first lock hinge piece one end articulates in first frame, second lock hinge piece one end articulates in the second frame, first lock hinge piece other end articulates in the second lock hinge piece other end, first lock hinge piece and second lock hinge piece dislocation arrangement, first lock hinge piece is equipped with first recess, second lock hinge piece is equipped with the second recess that corresponds with first recess, be equipped with spring and locking plate in proper order by second lock hinge piece one end to the other end in the second recess, locking plate sliding connection is in the second recess, when the locking plate inserts simultaneously in first recess and second recess under the spring effect, folding hasp is the locking state, when the locking plate leaves first recess and slides to the spring direction along the second recess, folding hasp is the unblock state.

Further, the first locking hinge piece is provided with a double-layer structure, the second locking hinge piece is embedded in 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 through holes are provided with rotating shafts in a penetrating mode.

Further, the upper end of the locking plate is provided with a sliding plate, and the surface of the sliding plate is provided with an anti-slip structure.

Further, the sliding vane 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 general, the invention has the following advantages:

when the scooter is used, the first frame and the second frame are respectively supported by the hands of a user, the turning direction of the scooter is easier to grasp due to the three-wheel structure, and meanwhile, the scooter has smaller turning radius, so that the scooter is convenient for the user to operate. The user's body may be positioned behind the rollator during pushing, with the body in a slightly forward leaning state, to better push the rollator and control the direction of advancement. When the user needs to stand and stay, as the accommodating vacancy is reserved between the rear parts of the first frame and the second frame, the user can move forwards for a small distance to enable the body to enter the accommodating vacancy, the body is converted into a basic upright state from a slightly forward tilting state, and the distance between the body gravity center and the rollator is shortened, so that the body gravity center cannot tilt forward when the user stands and stays while holding the rollator, and the risk of falling injury caused by inadvertently pushing the rollator to slide forwards is avoided.

Drawings

Fig. 1 is a schematic perspective view of the walker according to the present invention in a use state.

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 of the present invention.

Fig. 4 is a schematic perspective view of the folding state of the rollator according to the invention.

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

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

Reference numerals:

11-armrests, 12-brake devices, 13-front wheels, 14-rear wheels, 15-height adjusting knobs, 16-storage bags and 17-baffle pieces;

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

31-front supports, 32-rear supports, 33-bottom supports, 34-front vertical rods, 35-rear vertical rods and 36-upper vertical rods;

41-seat cushion, 42-zipper;

5-folding lock, 51-first hinge member, 511-first groove, 52-second hinge member, 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 walker 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, rear wheels 14 are respectively arranged at the rear parts of the first frame 21 and the second frame 22, and a containing 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 a brake device 12 for assisting service braking, and the brake device 12 can adopt various existing technologies.

Compared with a four-wheel rollator, the three-wheel rollator has better stability, smaller turning radius and easier grasping of turning direction by a user, and is convenient for the user to operate. When pushing, the user holds the first frame 21 and the second frame 22 of the rollator with hands, and the body is positioned behind the rollator, and the body is in a slightly forward inclined state, so that the rollator can be better pushed and the advancing direction can be controlled. When standing and staying are needed, as the containing space is reserved between the rear parts of the first frame 21 and the second frame 22, a user can move forwards for a small distance, so that the body enters the containing space between the first frame 21 and the second frame 22 and is converted into a basic upright state from a slightly forward tilting state, and the distance between the body gravity center and the rollator is shortened.

In this embodiment, the first frame 21 and the second frame 22 each include a front bracket 31, a rear bracket 32, a bottom bracket 33, a front vertical rod 34, a rear vertical rod 35, an upper vertical rod 36 and a handrail 11, the front bracket 31, the rear bracket 32 and the bottom bracket 33 are connected through the front vertical rod 34, the rear vertical rod 35 and the upper vertical rod 36 to form a triangle bracket, the lower end of the front bracket 31 is connected to the front wheel 13 through the front vertical rod 34, the lower end of the rear bracket 32 is connected to the rear wheel 14 through the rear vertical rod 35, the two ends of the bottom bracket 33 are respectively connected to the front vertical rod 34 and the rear vertical rod 35, and the upper ends of the front bracket 31 and the rear bracket 32 are connected to the handrail 11 through the upper vertical rod 36. The handrail 11 is arranged horizontally, when the rollator is in a pulled-open state, a semi-surrounding ring is formed between the handrail 11 and the first frame 21 and the second frame 22, a user can support left and right palms or elbows on the handrail 11, and the front wheel 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 unstable falling of the user during standing is avoided.

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

The upper vertical rod 36 is provided with a height adjusting knob 15, so that the height of the upper vertical rod 36 on the rear bracket 32 can be adjusted and locked, thereby being suitable for users with different heights to use the rollator.

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

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

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

In the accommodation space, the rear end of the storage bag 16 is provided with a turnover seat cushion 41, and the seat cushion 41 is arranged between the left and right baffle members 17. The seat cushion 41 is connected to the left and right spacers 17 at both sides thereof by a slide fastener 42. When the slide fastener 42 is pulled up, the seat cushion 41 is turned up to be in a satable use state, and when the slide fastener 42 is released, the seat cushion 41 is dropped down to be in a vertical storage state.

Specifically, the initial ends of the zippers 42 are located at the interface of 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 chain semi-circle seat 41 on the seat 41 is arranged, and the branched chain path on the baffle 17 is matched with the side part of the seat 41 after being turned up. As the slide fastener 42 is gradually closed from the initial end, the seat cushion 41 and the barrier 17 gradually increase in the connection area and eventually the seat cushion 41 is turned up to an approximately horizontal satable use state. The zipper 42 continues to be pulled upward and forward around the end of the seat cushion 41 until it reaches the end of the zipper 42 at the upper end of the seat cushion 41. Because the whole path of the zipper 42 comprises a rotation of 180 degrees, the zipper 42 is not easy to loosen after being pulled up, and the zipper 42 cannot slide off accidentally even if a user with a large weight sits on the seat cushion 41, so that the seat cushion 41 can always maintain stable supporting force, and a safe rest space can be provided for the user. After sitting on the seat cushion 41, the user can naturally hold both hands on the rear brackets 32 on both sides, which increases the safety factor and also enables better resting of both arms and hands.

When the slide fastener 42 is pulled in the opposite direction until the slide fastener 42 is completely released after returning to the initial end of the slide fastener 42, the seat cushion 41 is disconnected from the stopper 17 and is changed from the flipped-up state to a free-hanging state, thereby providing a receiving space for the user to enter and exit between the first frame 21 and the second frame 22.

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

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

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

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

The double-layer structure is provided with a first groove 511, the first groove 511 is communicated with the through hole of the first hinge locking piece 51, the second hinge locking piece 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 hinge locking piece 52. A spring 64 and a locking piece 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 piece 62 is slidably connected to the second groove 521.

When the rollator is needed 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 by taking the front wheel 13 as the axle center, so that the first hinge locking piece 51 and the second hinge locking piece 52 rotate back to back by taking the rotating shaft 61 as the axle center, and the included angle between the first frame 21 and the second frame 22 is gradually increased. When the included angle is flat, the first groove 511 and the second groove 521 are aligned, and the locking piece 62 moves forward by a distance under the force of the spring 64 to be inserted into the first groove 511 and to be simultaneously inserted into the first groove 511 and the second groove 521. Since the locking piece 62 restricts the continued rotation of the first hinge member 51 and the second hinge member 52 in the first groove 511 and the second groove 521, the folding lock 5 is kept in a straight shape, and at this time, the folding lock 5 is in a locked state, and a containing space is formed between the rear parts of the first frame 21 and the second frame 22;

when the rollator is required to be stored, the locking plate 62 is shifted, so that the locking plate 62 leaves the first groove 511 and slides along the second groove 521 towards the direction of the spring 64, the locking plate 62 does not limit the rotation of the first locking hinge piece 51 and the second locking hinge piece 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 relatively rotate by taking the front wheel 13 as an axis, and the rear parts of the first frame 21 and the second frame 22 are close to each other until being abutted against each other, so that the rollator has a small occupied space in a storage state.

When the rollator is needed again, only the rear parts of the first frame 21 and the second frame 22 are pulled outwards, so that the first locking hinge piece 51 and the second locking hinge piece 52 rotate in a straight shape. When the first groove 511 and the second groove 521 are aligned, the locking piece 62 is automatically pushed into the first groove 511 and the second groove 521 by the force of the spring 64, so that the folding latch 5 is automatically restored to the locked state.

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

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

The beneficial effects of the invention include:

1. the folding scooter is convenient to store, the sliding slide sheet 63 can release the locking state of the folding lock catch 5, and the folding scooter is easy to fold;

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 rollator, and the rear brackets 32 on two sides can be used for holding hands and supporting, so that the safety and comfort are improved;

3. the rollator is of a stable triangle structure, and rollover is not easy to occur in the use process;

4. the space is reasonable, and the space of the frame is fully utilized, and 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 examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims

1. A foldable three-wheeled rollator, characterized in that: the bicycle 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, rear wheels are arranged at the rear parts of the first frame and the second frame, and a containing gap is reserved between the rear parts of the first frame and the second frame; a storage bag is arranged between the accommodating vacancy and the front wheel and is connected with the first frame and the second frame;

a 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, in the locking state, the rear parts of the first frame and the second frame are mutually far away to form a containing vacancy, and in the folding lock catch unlocking state, the rear parts of the first frame and the second frame are mutually abutted;

the folding lock catch comprises a first lock hinge piece, a second lock hinge piece, a locking plate and a spring, wherein 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 second groove is internally provided with the spring and the locking plate from one end of the second lock hinge piece to the other end in sequence, the locking plate is connected with the second groove in a sliding mode, and when the locking plate is simultaneously inserted into the first groove and the second groove under the action of the spring, the folding lock catch is in a locking state, and when the locking plate leaves the first groove and slides along the second groove to the direction of the spring, the folding lock catch is in an unlocking state;

a turnover seat cushion is arranged in the accommodating vacancy and is connected with the rear end of the storage bag;

the two side parts of the seat cushion are respectively connected with the first frame and the second frame through zippers, when the zippers are pulled up, the seat cushion is turned up to be in a satable use state, and when the zippers are released, the seat cushion falls down to be in a vertical storage state;

the first locking hinge piece is provided with a double-layer structure, the second locking hinge piece is embedded in 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 through holes are provided with rotating shafts in a penetrating way;

a sliding sheet is arranged at the upper end of the locking sheet, and an anti-slip structure is arranged on the surface of the sliding sheet;

the gleitbretter is equipped with the arcwall face that suits with the pivot lateral wall, arcwall face butt in the pivot lateral wall.

2. A folding three-wheeled rollator as claimed in claim 1 wherein: the seat cushion is made of flexible materials.