CN223196252U - Wheelchair anti-reverse structure and wheelchair - Google Patents

Abstract

The application relates to the technical field of medical appliances, in particular to a wheel tilting prevention structure of a wheelchair and the wheelchair, which comprise a fixed seat, a first rod piece, a U-shaped joint, a torsion spring, a second rod piece and two wheel bodies, wherein the first rod piece is detachably fixed on the fixed seat, the U-shaped joint is welded and fixed at the bottom of the first rod piece, a small hole is formed in one side wall of the U-shaped joint, the second rod piece is hinged inside the U-shaped joint through a hinge shaft, one end of the torsion spring is sleeved on the hinge shaft outside the side provided with the small hole, and is inserted into the small hole, the other end of the torsion spring is arranged at the rear side of the second rod piece, and the two wheel bodies are rotatably connected to the bottom of the second rod piece.

Description

Wheel structure and wheelchair are prevented falling by wheelchair

Technical Field

The application relates to the technical field of medical equipment, in particular to an anti-tilting wheel structure of a wheelchair and the wheelchair.

Background

Wheelchairs are an important tool for rehabilitation, not only for disabled limbs and mobility impaired persons, but also for physical exercise and social activities by means of wheelchairs. The common wheelchair generally comprises a wheelchair frame, wheels, a brake device and a seat.

At present, wheelchairs in the market are various, most wheelchairs are not provided with backward tilting prevention devices, potential safety hazards exist, and when a user carelessly moves backward in use, the wheelchairs can tilt backward or overturn, so that danger is brought to the user.

In order to solve the problems, the application discloses an anti-tilting wheel structure of a wheelchair and the wheelchair.

Disclosure of utility model

In order to overcome the defects of the prior art, the application discloses an anti-tilting wheel structure of a wheelchair and the wheelchair.

In order to achieve the aim, the technical scheme adopted by the application is that the anti-tilting wheel structure of the wheelchair comprises a fixed seat, a first rod piece, a U-shaped joint, a torsion spring, a second rod piece and two wheel bodies, wherein the first rod piece is detachably fixed on the fixed seat;

the U-shaped joint is welded and fixed at the bottom of the first rod piece, and a small hole is formed in one side wall of the U-shaped joint;

The second rod piece is hinged in the U-shaped joint through a hinge shaft;

the torsion spring is sleeved on the hinge shaft outside one side provided with a small hole, one end of the torsion spring is inserted in the small hole, and the other end of the torsion spring is arranged at the rear side of the second rod piece;

The two wheel bodies are rotatably connected to the bottom of the second rod piece.

It is further preferable that the jack is provided in the fixing base along the direction of the fixing base, the first rod is inserted into the jack, the first rod and the circumference of the fixing base are provided with mounting through holes correspondingly, when the first rod is inserted into the jack, the mounting through holes are penetrated with screws, and nuts are screwed on the screws to fix the first rod and the fixing base.

It is further preferable that the second rod member is internally provided with a weight-reducing groove.

It is further preferred that the first rod and the second rod are both arc-shaped structures.

It is further preferable that the inner bottom surface of the fixing seat is provided with two internal threaded holes.

In addition to the above structure, the application also comprises a wheelchair comprising two anti-tilting wheel structures of the wheelchair according to any one of the above, wherein the inside of each fixing seat is fixed with a rear wheel supporting rod of the wheelchair through two screws passing through two internal threaded holes.

The application has the following beneficial effects:

when the wheel chair is reclined, the distance between the wheel chair and the rear wheel is increased, so that the ground contact area is increased, the supporting force is enhanced, the anti-tilting effect is better, the safety coefficient of a user during use is improved, and the wheel chair has strong practicability.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present disclosure;

FIG. 2 is a schematic view of the backside structure of the present disclosure;

FIG. 3 is a schematic view of a wheelchair according to the present disclosure;

10 parts of a fixed seat, 11 parts of an inserting hole, 12 parts of an internal threaded hole, 20 parts of a first rod, 30 parts of a U-shaped joint, 31 parts of a small hole, 40 parts of a torsion spring, 50 parts of a second rod, 51 parts of a weight reducing groove, 60 parts of a wheel body, 70 parts of a hinge shaft, 80 parts of a screw, 90 parts of a nut, 100 parts of an installation through hole, 110 parts of a rear wheel supporting rod.

Detailed Description

The following description of the embodiments of the present application 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 application, but not all embodiments.

In the description of the present application, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present application and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Examples

In order to solve the defects that the wheelchair in the prior art is not provided with a backward tilting prevention device and has potential safety hazards, the application discloses a backward tilting prevention structure of the wheelchair, which is shown by referring to fig. 1 and 2, and comprises a fixed seat 10, a first rod piece 20, a U-shaped joint 30, a torsion spring 40, a second rod piece 50 and two wheel bodies 60, wherein the first rod piece 20 is detachably fixed on the fixed seat 10;

The U-shaped joint 30 is welded and fixed at the bottom of the first rod piece 20, and a small hole 31 is formed in one side wall of the U-shaped joint 30;

The torsion spring 40 is sleeved on the hinge shaft 70 at the outer part of one side provided with the small hole 31, one end of the torsion spring is inserted into the small hole 31, and the other end of the torsion spring is arranged at the rear side of the second rod piece 50;

Two wheels 60 are rotatably connected to the bottom of the second lever 50.

When the wheel chair is inclined backwards, the wheel body 60 rotates backwards by a certain angle, and at this time, the area of the whole wheelchair contacting the ground is enlarged, and the supporting force is also strengthened, so that the wheel chair has the function of preventing falling.

In order to facilitate the disassembly and assembly of the first rod 20 and the fixed seat 10, the application provides a jack 11 in the fixed seat 10 along the direction of the first rod 20, the first rod 20 is inserted into the jack 11, the first rod 20 and the circumference of the fixed seat 10 are correspondingly provided with a mounting through hole 100, when the first rod 20 is inserted into the jack 11, the mounting through hole 100 is penetrated with a screw 80, and the screw 80 is screwed with a nut 90 to fix the first rod 20 and the fixed seat 10.

The application provides a weight reduction groove 51 in the second rod 50 without affecting the normal use of the second rod 50 and reducing the weight of the second rod 50.

In one embodiment, in order to enable the wheel 60 to be placed on the ground after installation, the first rod 20 and the second rod 50 of the present application are both arc-shaped.

In this embodiment, two internal threaded holes 12 are formed on the bottom surface of the fixing base 10, so that the fixing base 10 and the wheelchair can be mounted by screws 80.

Referring to fig. 3, in addition to the above-mentioned structure, the present application further includes a wheelchair comprising two anti-roll-over structures of the wheelchair according to any one of the above, and the inside of each fixing base 10 is fixed to the rear wheel support bar 110 of the wheelchair by two screws 80 passing through two female screw holes 12.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing embodiments are merely illustrative of the technical concept and features of the present application, and are intended to enable those skilled in the art to understand the present application and to implement the same according to the present application, not to limit the scope of the present application. All changes and modifications that come within the meaning and range of equivalency of the application are to be embraced within their scope.

Claims (6)

1. A wheelchair anti-rollover structure, characterized by comprising a fixing seat (10), a first rod (20), a U-shaped joint (30), a torsion spring (40), a second rod (50) and two wheel bodies (60); The first rod (20) is detachably fixed to the fixing seat (10); The U-shaped joint (30) is welded and fixed to the bottom of the first rod (20), and a small hole (31) is opened on one side wall of the U-shaped joint (30); The second rod (50) is hinged inside the U-shaped joint (30) via a hinge shaft (70); The torsion spring (40) is sleeved on the hinge shaft (70) on the side where the small hole (31) is opened, and one end of the torsion spring is inserted into the small hole (31), and the other end is arranged on the rear side of the second rod (50); The two wheels (60) are rotatably connected to the bottom of the second rod (50). 2. A wheelchair anti-rollover structure according to claim 1, characterized in that the interior of the fixing seat (10) is provided with a socket (11) along its direction, the first rod (20) is inserted into the socket (11), and the first rod (20) and the peripheral side of the fixing seat (10) are provided with mounting through holes (100) respectively. When the first rod (20) is inserted into the socket (11), a screw (80) is passed through the mounting through hole (100) and a nut (90) is screwed on the screw (80) to fix the first rod (20) to the fixing seat (10). 3. A wheelchair anti-reverse structure according to claim 1, characterized in that a weight-reducing groove (51) is provided inside the second rod (50). 4. A wheelchair anti-reverse structure according to claim 3, characterized in that both the first rod (20) and the second rod (50) are arc-shaped structures. 5. The wheelchair anti-rollover structure according to claim 1, characterized in that two internal threaded holes (12) are provided on the inner bottom surface of the fixing seat (10). 6. A wheelchair, characterized in that it comprises two wheelchair anti-reverse structures according to any one of claims 1 to 5, wherein the interior of each fixing seat (10) is fixed to the rear wheel support rod (110) of the wheelchair by two screws (80) passing through two internal threaded holes (12).