CN219071018U

CN219071018U - Rear wheel positioning structure for integrated folding four-wheel vehicle

Info

Publication number: CN219071018U
Application number: CN202222116612.XU
Authority: CN
Inventors: 曾宪伟
Original assignee: Xiamen Jixin Medical Technology Co ltd
Current assignee: Xiamen Jixin Medical Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-05-26
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to the field of four-wheel vehicle components and discloses an integral folding four-wheel vehicle rear wheel positioning structure which comprises a pushing handle, wherein the lower end of the pushing handle is provided with a seat, a backrest, an armrest, a support frame, a front wheel and a rear wheel, the inner sides of the rear wheels are all provided with fixing rods, the lower ends of the fixing rods are provided with connecting blocks, the upper ends of the rear sides of first bosses are provided with second bosses, threaded holes are formed in the second bosses, the upper ends of the connecting blocks are provided with sliding blocks, one side of each sliding block is provided with a limiting plate, the rear ends of the sliding blocks are provided with a third boss, the third bosses are provided with placing holes, connecting rods are arranged in the placing holes, the lower ends of the connecting rods are fixedly connected with screws, the lower ends of the screws are screwed into the threaded holes, and springs are sleeved on the screws. In the utility model, the rear wheel positioning structure can play a role in positioning the rear wheels, and the positioning device has the advantages of simple structure, convenient operation, convenient installation and strong practicability, and is suitable for popularization and use.

Description

Rear wheel positioning structure for integrated folding four-wheel vehicle

Technical Field

The utility model relates to the field of four-wheel vehicle assemblies, in particular to a rear wheel positioning structure for an integrated folding four-wheel vehicle.

Background

The wheelchair is also called a four-wheel vehicle, is an important moving tool for the home rehabilitation, turnover transportation, medical treatment and outgoing activities of wounded persons, patients and disabled persons, is divided into an electric and manual folding wheelchair, and is generally composed of a foldable frame, front wheels, rear wheels, left and right knee pads, foot pedals, left and right detachable armrests, a handle brake device, a seat, and the like.

However, the existing wheel structure of the wheelchair lacks a fixed positioning structure and has potential safety hazards, so that a person skilled in the art provides an integrated folding four-wheel vehicle rear wheel positioning structure to solve the problems set forth in the background art.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides the integral folding rear wheel positioning structure for the four-wheel vehicle.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the integrated folding four-wheel vehicle rear wheel positioning structure comprises a pushing handle, wherein a seat is arranged at the lower end of the pushing handle, a backrest is arranged above the rear side of the seat, armrests are arranged on two sides of the seat, a support frame is arranged below the armrests, front wheels are arranged at the front ends below the support frame, rear wheels are arranged at the rear ends below the support frame, rear wheel positioning devices are arranged at the inner sides of the rear wheels, the rear wheel positioning devices comprise fixing rods, connecting blocks are arranged at the lower ends of the fixing rods, the inside of the connecting blocks is hollowed, a fixing sleeve is arranged at the lower end of the fixing rods, a first boss is fixedly arranged at the outer side of the connecting blocks, rear wheels are rotatably connected to the outer side of the first boss, a second boss is fixedly arranged at the upper side of the first boss, threaded holes are formed in the inside of the second boss, the upper ends and the lower ends of the threaded holes penetrate through the second boss, a sliding block is arranged at the upper end of the connecting block, a sliding block is internally hollow, a sliding sleeve is arranged on the fixing rod, a third boss is fixedly arranged at the lower end of the side of the sliding block, a third boss is screwed into the connecting rod is fixedly arranged at the lower end of the side of the connecting rod, a third boss is fixedly arranged at the lower end of the third boss, and a threaded hole is fixedly arranged at the lower end of the third boss, and is fixedly screwed into a third boss arranged at the lower end of the connecting rod;

through above-mentioned technical scheme, drive the limiting plate downward movement on the slider through torsion handle, until limiting plate embedding spacing inslot, can play the effect to rear wheel location, and positioner simple structure, convenient operation is convenient for install, and the practicality is strong, is fit for using widely.

Further, the placement holes correspond to the threaded holes in position;

through above-mentioned technical scheme, screw rod lower extreme screw in the screw hole, upper end and place the connecting rod fixed connection in placing the hole.

Further, the upper end of the connecting rod is fixedly connected with a torsion handle;

through the technical scheme, the strength is saved, and the operation is convenient.

Further, a limit groove is fixedly formed in the middle of one side, close to the connecting block, of the rear wheel;

through above-mentioned technical scheme, can cooperate with the limiting plate.

Further, the torsion handle drives the screw rod and the sliding block to move downwards, and the limiting plate on the sliding block is embedded into the limiting groove;

through above-mentioned technical scheme, limiting plate card prevents limiting groove and rear wheel rotation in the limiting groove.

Further, the connecting rod is welded with the screw rod;

through the technical scheme, the connection is more stable.

Further, a limiting device is fixedly arranged at the lower end of the screw rod;

through above-mentioned technical scheme, prevent that the screw rod from breaking away from the screw hole when upwards unscrewing.

Further, the connecting block is fixedly connected with the fixed rod through a bolt;

through above-mentioned technical scheme, connect conveniently, the dismouting of being convenient for.

The utility model has the following beneficial effects:

1. according to the utility model, the limiting plate on the sliding block is driven to move downwards by twisting the handle until the limiting plate is embedded into the limiting groove, so that the effect of positioning the rear wheels can be achieved.

2. In the utility model, the positioning device has the advantages of simple structure, convenient operation, convenient installation and strong practicability, and is suitable for popularization and use.

Drawings

Fig. 1 is a perspective view of a rear wheel positioning structure for an integrated folding four-wheel vehicle according to the present utility model;

FIG. 2 is an exploded view of a rear wheel positioning device of a rear wheel positioning structure for an integrated folding four-wheel vehicle according to the present utility model;

fig. 3 is a perspective view of a rear wheel positioning device of an integrated folding four-wheel vehicle rear wheel positioning structure according to the present utility model.

Legend description:

1. pushing the handle; 2. a backrest; 3. a seat; 4. an armrest; 5. a support frame; 6. a rear wheel; 7. a front wheel; 8. a rear wheel positioning device; 9. a fixed rod; 10. a connecting block; 11. a first boss; 12. a second boss; 13. a threaded hole; 14. a slide block; 15. a limiting plate; 16. a third boss; 17. placing the hole; 18. a connecting rod; 19. twisting the handle; 20. a screw; 21. a spring; 22. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the utility model provides an integral type receipts closes folding four-wheel vehicle rear wheel location structure, is provided with seat 3 including promotion handle 1, promotion handle 1 lower extreme, and seat 3 rear side top is provided with back 2, and seat 3 both sides all are provided with handrail 4, and two handrail 4 below all is provided with support frame 5, and support frame 5 below front end is provided with front wheel 7, and support frame 5 below rear end is provided with rear wheel 6, and the inboard of two rear wheel 6 all is provided with rear wheel positioner 8.

The rear wheel positioner 8 includes dead lever 9, and dead lever 9 lower extreme is provided with connecting block 10, and connecting block 10 inside is drawn out, and fixed cover is established at dead lever 9 lower extreme, and connecting block 10 passes through bolt and dead lever 9 fixed connection, and convenient to connect, the dismouting of being convenient for, connecting block 10 outside is fixed to be provided with first boss 11, and the rotation of first boss 11 outside is connected with rear wheel 6, and first boss 11 rear side upper end is fixed to be provided with second boss 12, and threaded hole 13 has been seted up to second boss 12 inside, and second boss 12 is run through at both ends about threaded hole 13.

The upper end of connecting block 10 is provided with slider 14, and slider 14 inside is drawn out to be hollow, and the slip cap is established on dead lever 9, and slider 14 is close to the fixed limiting plate 15 that is provided with of lower extreme of rear wheel 6 one side, and slider 14 rear end top is fixed to be provided with third boss 16, and the inside hole 17 of placing that has seted up of third boss 16, and the hole 17 upper and lower both ends run through third boss 16 of placing.

Placing hole 17 inside is provided with connecting rod 18, connecting rod 18 upper end fixedly connected with twists reverse handle 19, save effort, convenient operation, connecting rod 18 lower extreme fixedly connected with screw rod 20, connecting rod 18 and screw rod 20 welded connection, it is more stable to connect, screw rod 20's lower extreme is twisted into the screw hole 13 on the connecting block 10 inside, place hole 17 and screw hole 13 position correspondence, make things convenient for screw rod 20 lower extreme to twist into in the screw hole 13, the upper end with place the connecting rod 18 fixed connection in placing hole 17, screw rod 20's lower extreme is fixedly provided with stop device, break away from screw hole 13 when preventing that screw rod 20 from upwards screwing out, the cover is equipped with spring 21 on screw rod 20 between second boss 12 and the third boss 16.

The rear wheel 6 is close to fixed spacing groove 22 that is provided with in the middle of the connecting block 10 one side, can cooperate with limiting plate 15, twists reverse handle 19 drive screw rod 20 and slider 14 downstream, and limiting plate 15 on the slider 14 imbeds spacing groove 22, and limiting plate 15 card is in spacing groove 22, prevents spacing groove 22 and rear wheel 6 rotation.

Working principle: when positioning is needed, the torsion handle 19 drives the screw rod 20 to move downwards, the torsion handle 19 presses the slide block 14 and the limiting plate 15 on the slide block 14 to move downwards until the limiting plate 15 is embedded into the limiting groove 22, and the limiting plate 15 is clamped in the limiting groove 22 to prevent the limiting groove 22 and the rear wheel 6 from rotating, so that the positioning effect of the rear wheel 6 is achieved.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Rear wheel location structure for integral folding four-wheel vehicle, including pushing handle (1), its characterized in that: the novel bicycle is characterized in that a seat (3) is arranged at the lower end of the pushing handle (1), a backrest (2) is arranged above the rear side of the seat (3), armrests (4) are arranged on two sides of the seat (3), a supporting frame (5) is arranged below the two armrests (4), a front wheel (7) is arranged at the front end below the supporting frame (5), a rear wheel (6) is arranged at the rear end below the supporting frame (5), and rear wheel positioning devices (8) are arranged on the inner sides of the two rear wheels (6);

the rear wheel positioning device (8) comprises a fixed rod (9), a connecting block (10) is arranged at the lower end of the fixed rod (9), the inside of the connecting block (10) is hollowed, a fixed sleeve is arranged at the lower end of the fixed rod (9), a first boss (11) is fixedly arranged at the outer side of the connecting block (10), a rear wheel (6) is rotationally connected to the outer side of the first boss (11), a second boss (12) is fixedly arranged at the upper end of the rear side of the first boss (11), a threaded hole (13) is formed in the second boss (12), the upper end and the lower end of the threaded hole (13) penetrate through the second boss (12), a sliding block (14) is arranged at the upper end of the connecting block (10), the inside of the sliding block (14) is hollowed, a limiting plate (15) is fixedly arranged at the lower end of one side of the sliding block (14) close to the rear wheel (6), a third boss (16) is fixedly arranged at the upper end of the sliding block (14), a placement hole (17) is formed in the inner side of the third boss (16), and the placement hole (17) penetrates through the upper end and the lower end of the third boss (17).

The connecting rod (18) is arranged in the placing hole (17), the screw rod (20) is fixedly connected to the lower end of the connecting rod (18), the lower end of the screw rod (20) is screwed into the threaded hole (13) in the connecting block (10), and the spring (21) is sleeved on the screw rod (20) between the second boss (12) and the third boss (16).

2. The integrated folding four-wheel vehicle rear wheel positioning structure according to claim 1, wherein: the placement holes (17) correspond to the positions of the threaded holes (13).

3. The integrated folding four-wheel vehicle rear wheel positioning structure according to claim 1, wherein: the connecting rod (18) upper end fixedly connected with twists reverse handle (19), back wheel (6) are close to fixed being provided with spacing groove (22) in the middle of connecting block (10) one side, twist reverse handle (19) drive screw rod (20) and slider (14) downstream, limiting plate (15) on slider (14) imbeds in spacing groove (22).

4. The integrated folding four-wheel vehicle rear wheel positioning structure according to claim 1, wherein: the connecting rod (18) is welded with the screw rod (20).

5. The integrated folding four-wheel vehicle rear wheel positioning structure according to claim 1, wherein: and a limiting device is fixedly arranged at the lower end of the screw rod (20).

6. The integrated folding four-wheel vehicle rear wheel positioning structure according to claim 1, wherein: the connecting block (10) is fixedly connected with the fixing rod (9) through bolts.