CN101524308A - Manual portable wheelchair lifting device - Google Patents

Abstract

The invention discloses a manual portable wheelchair lifting device, which belongs to the field of civilian technology. The device consists of a sliding chute rod, a seat front frame, a side lift fork group, an upper chute rod, a seat rear frame, a plane lifting fork group, a lifting screw assembly, a positioning shaft, a sliding chute rod, a connecting pin of the lifting fork group, and a positioning shaft seat and other components. It is designed for the requirement that the wheelchair seat can be raised and lowered. The user can realize the lifting function of the wheelchair seat by turning the crank handle according to the need, which can conveniently ensure that the height of the user sitting on the seat after the wheelchair is raised is approximately equal to the height of a normal person standing , so as to improve the self-care ability of the disabled, and at the same time, the device still has the characteristic of enabling the portable wheelchair to realize the folding function.

Description

Manual Portable Wheelchair Lift

technical field

The invention relates to a manual portable wheelchair lifting device, which belongs to the field of civil technology.

Background technique

The disabled group is an important group of social concern, and the wheelchair is an important branch of the disabled assistance machinery. For people with lower limb disabilities, the wheelchair is an indispensable means of transportation. The wheelchair is designed to be humanized, cheap and easy to carry, which will effectively improve the self-care ability of disabled users.

Wheelchairs are usually divided into two categories: ordinary wheelchairs and special wheelchairs. Ordinary wheelchairs are generally composed of four parts: chair frame, wheels (large and small wheels), brakes and seat, including corresponding hand rims, tires, backrest armrests or arm rests, foot rests and leg rests, etc.; special wheelchairs It is derived from ordinary wheelchairs according to the physical functions and purposes of wheelchair users. Commonly used wheelchairs include fixed wheelchairs, folding wheelchairs, standing wheelchairs, reclining wheelchairs, unilaterally driven wheelchairs, electric wheelchairs, competitive wheelchairs, etc. . At present, what a large proportion of ordinary users need is a wheelchair that is convenient, cheap, and can expand certain self-care functions, such as liftable, etc., but there is no portable wheelchair with this function at present.

Contents of the invention

The technical problem to be solved by the present invention is to provide a manual portable wheelchair with liftable function, so that it can meet the requirements of the disabled for independent action and improve their self-care ability.

In order to achieve the above object, the manual portable wheelchair lifting device of the present invention consists of a lower chute rod, a seat front frame, a side lift fork group, an upper chute rod, a seat rear frame, a plane lift fork group, a lift screw assembly, a positioning shaft, a lift Fork group connecting pin, positioning shaft seat and other parts, the lifting screw assembly also includes lifting handle, lifting screw, screw bearing seat, lifting nut and crank handle, wherein the screw bearing seat is fixedly installed on the rear frame of the seat , the lifting nut is fixedly installed on the front frame of the seat, the upper chute rod and the lower chute rod are respectively connected to the side lifting fork groups on both sides through 4 hinges on each side, and the plane lifting fork group is respectively connected to the front frame of the seat through 4 hinges It is connected with the rear frame of the seat, and the four positioning shaft seats are respectively fixedly installed on the side lifting fork groups on both sides.

In addition, among the 4 hinge connections between the side lifting fork group on each side and the upper chute rod and the lower chute rod, 2 are movable connections with long slots or sliders; the plane lifting fork group is connected to the seat front frame and seat rear frame Of the 4 hinges connected, 2 are movable connections with long slots or sliders; the plane lifting fork set is set on one side of the wheelchair's symmetrical center.

The manual portable wheelchair lifting device involved in the present invention is designed in a humanized manner according to the requirement that the wheelchair seat can be lifted. The user can rotate the lifting screw through the crank handle to drive the lifting nut fixed on the front frame of the seat to make a linear motion according to the needs, and The front frame of the seat is driven to move back and forth, and the side lifting fork groups on both sides are driven to retract and retract through the positioning shaft. This movement in turn prompts the front frame of the seat and the rear frame of the seat to move up and down, thereby realizing the lifting function of the wheelchair seat. The present invention can change the expected lifting height through the customary design methods such as the size of the fork rod of the lifting fork group on the opposite side, the long groove size of the upper chute rod and the lower chute rod, or the moving interval of the slider, so that the user can be easily guaranteed After the wheelchair is raised, the height of sitting on the seat is approximately equal to the standing height of a normal person, thereby improving the self-care ability of the disabled; in addition, the device still has the characteristics of portability.

Description of drawings

A manual portable wheelchair lifting device proposed according to the present invention will be further described in detail below in conjunction with the specific implementations in FIG. 1 , FIG. 2 and FIG. 3 .

Fig. 1 is a schematic front view of a manual portable wheelchair lifting device proposed according to the present invention.

Fig. 2 is a schematic top view of a manual portable wheelchair lifting device proposed according to the present invention.

Fig. 3 is a schematic cross-sectional view of a manual portable wheelchair lifting device according to the present invention.

Detailed ways

A kind of manual portable wheelchair lifting device of this embodiment is shown in Fig. 1, Fig. 2 and Fig. 3, mainly consists of down chute bar 1, seat front frame 4, side lifting fork group 5, upper chute bar 6, seat rear frame 8. Plane lifting fork group 9, lifting screw assembly 10, positioning shaft 11, lifting fork group connecting pin 13, positioning shaft seat 17 and other components, and lifting screw assembly 10 also includes lifting handle 2, lifting screw 3, Lead screw bearing block 7, lifting nut 14, rocking handle 16 etc.

Said lead screw bearing seat 7 is fixedly installed on the seat rear frame 8, and the lifting nut 14 is fixedly installed on the seat front frame 4, and the upper chute bar 6 and the lower chute bar 1 are respectively connected to the two sides by 4 hinges on each side. The side lifting fork group 5 is connected, the plane lifting fork group 9 is respectively connected with the seat front frame 4 and the seat rear frame 8 through four hinges, and the four positioning shaft seats 17 are respectively fixedly installed on the side lifting fork groups 5 on both sides, The seat front frame 4 and the seat rear frame 8 are respectively moved and placed in the positioning shaft seats 17 on both sides through the positioning shaft 11, and the side lifting fork group 5 on each side is hingedly connected with 4 places of the upper chute rod 6 and the lower chute rod 1 Among them, there are 2 joints of long groove type connection, or sliding block movable connection, and among the 4 hinges connecting the plane lifting fork group 9 with the seat front frame 4 and the seat rear frame 8, there are also 2 joints of long slot type. Groove type connection, or sliding block movable connection can also be used, so that when the lifting screw is rotated by the crank handle, the front frame of the seat can be moved back and forth to drive the side lifting fork groups on both sides to perform retraction and retraction movement, and The front frame of the seat and the rear frame of the seat are driven to move up and down through the positioning shaft seat 17 and the positioning shaft 11, thereby realizing the lifting of the wheelchair seat.

Said plane lifting fork group 9 is arranged on one side of the wheelchair symmetry center, so just can be convenient to make portable wheelchair realize folding function.

In addition to the above-mentioned embodiments, the present invention can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (4)

1. manual portable wheelchair lifting device, this lowering or hoisting gear is by downslide channel bar (1), seat front baffle (4), side lifting fork group (5), upper hopper chute bar (6), seat afterframe (8), plane lifting fork group (9), elevating screw assembly (10), locating shaft (11), lifting fork group connecting pin (13), location axle bed parts such as (17) are formed, elevating screw assembly (10) also comprises lifting handle (2), elevating screw (3), lead screw shaft bearing (7), lifting nut (14); rocking handle (16); it is characterized in that: lead screw shaft bearing (7) is fixedly mounted on the seat afterframe (8); lifting nut (14) is fixedly mounted on the seat front baffle (4); upper hopper chute bar (6) and downslide channel bar (1) connect with the side lifting fork group (5) of both sides by each 4 hinge of every side respectively; plane lifting fork group (9) connects with seat front baffle (4) and seat afterframe (8) respectively by 4 place's hinges; locate axle beds (17) for 4 and be fixedly mounted on respectively on the side lifting fork group (5) of both sides, seat front baffle (4) and seat afterframe (8) by locating shaft (11) respectively activity be placed on both sides and locate in the axle beds (17).

2. manual portable wheelchair lifting device according to claim 1 is characterized in that: in 4 place's hinge-coupled of the side lifting fork group (5) of every side and upper hopper chute bar (6) and downslide channel bar (1), 2 places are elongated slot or the movable connection of slide block.

3. manual portable wheelchair lifting device according to claim 1 is characterized in that: in plane lifting fork group (9) and 4 place's hinges that seat front baffle (4) and seat afterframe (8) connect, 2 places are elongated slot or the movable connection of slide block.

4. manual portable wheelchair lifting device according to claim 1 is characterized in that: plane lifting fork group (9) is arranged on a side of wheelchair symmetrical centre.

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