CN212756180U

CN212756180U - Pull-type wheelchair capable of going upstairs and downstairs and system

Info

Publication number: CN212756180U
Application number: CN202020562281.0U
Authority: CN
Inventors: 朱大伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-03-23
Anticipated expiration: 2030-04-16

Abstract

Relates to a traction wheelchair capable of going upstairs and downstairs and a system thereof. The wheelchair comprises a wheelchair body and wheels, wherein fixed plates are arranged on the two inner sides of each wheel, and each fixed plate is connected with a sliding plate through 2 connecting plates; the connecting plate is a centrosymmetric geometric body with two ends respectively provided with a 90-degree arc, two ends of the connecting plate are connected with the fixed plate and the sliding plate through rotating shaft pins, and one rotating shaft pin is provided with a reset torsion spring; the reset torsion spring uses the pivot pin as its installation center, and the linkage plate revolutes the pivot pin and rotates to be the predetermined contained angle with the fixed plate contained angle under the torsion effect of reset torsion spring, and the scope of predetermined contained angle is 0-20 degrees, and when the slide received the forward tension effect and is greater than the torsion of reset torsion spring, the linkage plate revolutes the pivot and rotates to the state of perpendicular to fixed plate to drive the slide and fall down. This application installs additional on ordinary wheelchair and can packs up, the slide that falls, carries out the interlaminar removal with electric tractor with the wheelchair together with personnel under nursing staff's control, reaches the purpose upstairs and downstairs.

Description

Pull-type wheelchair capable of going upstairs and downstairs and system

Technical Field

The utility model relates to a wheelchair field especially relates to a towed wheelchair and system that can go upstairs and downstairs.

Background

With the advent of aging society, there are more elderly people who need to move about with the help of wheelchairs, in addition to partially physically handicapped people. Going downstairs and going out are the most difficult when they live in buildings without elevator cars. The manual carrying can be completed by at least two persons with light and strong years. Generally, the corridor of a residential building is relatively narrow, and the transportation is very difficult. Difficulties are more difficult to imagine if living on higher floors. They are trapped in the air and cannot go downstairs to communicate with neighbors. Even seeking medical doctors to see a doctor is difficult and serious, and the quality of life is poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been developed to provide a pull-type upstairs and downstairs wheelchair and system that overcome or at least partially solve the above problems.

According to one aspect of the utility model, a traction wheelchair capable of going upstairs and downstairs is provided, which comprises a wheelchair body and wheels arranged on the wheelchair body, wherein fixed plates are arranged on two inner sides of the wheels, and each fixed plate is connected with a sliding plate through 2 connecting plates; the connecting plate is a centrosymmetric geometric body with two ends respectively provided with a 90-degree arc, the two ends of the connecting plate are connected with the fixed plate and the sliding plate through rotating shaft pins, and a reset torsion spring is arranged on one rotating shaft pin; the reset torsion spring uses the rotating shaft pin as an installation center, the connecting plate rotates around the rotating shaft pin to a position which is a preset included angle with a fixed plate included angle under the torsion action of the reset torsion spring, the range of the preset included angle is 0-20 degrees, and when the sliding plate is subjected to the forward tension action and is larger than the torsion of the reset torsion spring, the connecting plate rotates around the rotating shaft pin to a position which is perpendicular to the fixed plate, so that the sliding plate is driven to fall down.

In one possible embodiment, the return torsion spring is a hollow circular torsion spring wound with a spring wire.

According to another aspect of the utility model, a pull-type wheelchair system capable of going upstairs and downstairs is provided, including mobilizable electric tractor and the aforementioned pull-type wheelchair capable of going upstairs and downstairs, the slide in the pull-type wheelchair capable of going upstairs and downstairs is connected electric tractor.

In a possible embodiment, the electric traction apparatus comprises an electric motor, a speed reducer, a traction sheave, a traction cable, a control device, a coupling plate and a traction fixing base.

The utility model discloses install additional on ordinary wheelchair and pack up, the slide that falls, carry out the floor with electric tractor with the wheelchair together with personnel and remove under nursing staff's control, reach the purpose upstairs and downstairs.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view showing a state in which a coupling plate and a fixed plate are at a small angle when the slide plate is retracted;

FIG. 2 is a schematic view showing a state where the coupling plate is perpendicular to the fixed plate when the slide plate is dropped;

FIG. 3 is a perspective view of the wheelchair in the stowed position;

FIG. 4 is a schematic view of an application scenario of a traction wheelchair capable of going upstairs and downstairs;

description of reference numerals:

1-fixing plate, 2-reset torsion spring, 3-connecting plate, 4-pivot pin, 5-sliding plate and 6-traction cable.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1-4, the embodiment of the present invention provides a traction wheelchair capable of going upstairs and downstairs, which comprises a wheelchair body and wheels mounted on the wheelchair body, wherein fixing plates 1 are mounted on both sides of the wheels, and each fixing plate 1 is connected with a sliding plate 5 through 2 connecting plates 3.

The connecting plate 3 is a centrosymmetric geometric body with two ends respectively provided with a 90-degree arc, two ends of the connecting plate 3 are connected with the fixing plate 1 and the sliding plate 5 through a rotating shaft pin 4, and one rotating shaft pin 4 is provided with a reset torsion spring 2.

The reset torsion spring 2 is a hollow round torsion spring wound by spring steel wires, a rotating shaft pin 4 is used as an installation center of the reset torsion spring, the connecting plate 3 rotates around the rotating shaft pin 4 to a state of forming a small angle with the fixing plate 1 under the torque force action of the reset torsion spring 2, and when the sliding plate 5 is subjected to forward tension force action which is larger than the torque force of the reset torsion spring 2, the connecting plate 3 rotates around the rotating shaft pin 4 to a state of being perpendicular to the fixing plate 1, so that the sliding plate 5 is driven to fall down. The small angle ranges from 0 to 20 degrees.

The sliding plate 5 is connected with a power device through a traction cable 6.

In one example, the slider 5 is made of a composite of a metal material and a wear-resistant low-resistance material. Ensuring the sliding plate to have enough strength and self-lubricating property.

The working principle is as follows:

when the connecting plate 3 is acted by a forward pulling force, the connecting plate 3 rotates from a state of being approximately parallel to the fixed plate 1 to a state of being vertical to the fixed plate 1, the sliding plate 5 automatically falls down against the action of the reset torsion spring 2 along with the rotation of the connecting plate 3, and when the connecting plate 3 rotates to a limit position, the connecting plate is limited and stops rotating. At the moment, the sliding plate and the four wheels of the wheelchair are positioned on the same plane, and the wheels lose the rotating function. When the pulling force disappears, the connecting plate 3 returns to the position which is approximately parallel to the fixed plate 1 again under the action of the reset torsion spring 2, the sliding plate 5 retracts to the original retracting state again, and the four wheels of the wheelchair restore the function.

The embodiment of the utility model provides a towed wheelchair system that can go upstairs and downstairs still is provided, including mobilizable electric tractor and above-mentioned towed wheelchair that can go upstairs and downstairs, slide 5 in the towed wheelchair that can go upstairs and downstairs is at the during operation, is connected by the traction cable electric tractor.

The movement of the pull-up and down-stairs wheelchair may be powered by means of an independently movable electric tractor. The tractor comprises a motor, a speed reducer, a traction rope wheel, a traction rope 6, a control device, a connecting plate and the like. The DC motor can also be provided with a battery power supply.

The connecting plate of the electric tractor is used for being inserted into the traction fixing seat positioned on the wall body of the corridor. The traction fixing seat is a fixing device arranged on a wall body of a corridor. The purpose of which is to position the retractor on the wall. The electric tractor moves to the corresponding floor according to the change of the position of the floor where the wheelchair is positioned. After moving for many times, the wheelchair can go upstairs and downstairs.

The position of the traction fixing seat fixed on the wall body is fixed, so the movement track of the wheelchair upstairs and downstairs on the corridor is also fixed. Just like a virtual rail on a staircase. The slide plate is in contact only at right angles to the steps being traversed. Therefore, a thin metal corner or other coating can be pasted at the position, so that the friction resistance between the sliding plate and the step is reduced, and the operation is more facilitated.

The traction wheelchair capable of going upstairs and downstairs is always pulled by the traction rope when moving up and down on the stairs, and no lateral acting force is generated. The movement and the stoppage of the medical nursing bed are controlled by nursing staff, and the medical nursing bed is safe and reliable.

The mode of use;

1, inserting a connecting plate of a tractor into a corridor wall traction fixing seat. The retractor is now fixed to the wall. The traction fixing seat needs to be detected after installation, and the traction fixing seat is guaranteed to bear horizontal tension not less than 200 kilograms of force.

2, the front of the mobile wheelchair faces the tractor. The wheelchair occupant and the operator always face the retractor. The user moves forward when going upstairs and moves backward when going downstairs.

And 3, connecting the traction rope with the sliding plate traction hook by an operator.

And 4, controlling the wheelchair handle by an operator, starting the tractor and enabling the sliding plate to fall down. The wheelchair moves slowly and goes up to the upper corridor platform or goes down to the lower corridor platform. The above steps are repeated to finish the movement among the multi-floor.

And 5, disconnecting the connection, retracting the sliding plate, and recovering the wheelchair to the normal use state of flat ground.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A traction wheelchair capable of going upstairs and downstairs is characterized by comprising a wheelchair body and wheels arranged on the wheelchair body, wherein fixing plates (1) are arranged on the two inner sides of each wheel, and each fixing plate (1) is connected with a sliding plate (5) through 2 connecting plates (3);

the connecting plate (3) is a centrosymmetric geometric body with two ends respectively provided with a 90-degree arc, two ends of the connecting plate (3) are connected with the fixing plate (1) and the sliding plate (5) through rotating shaft pins (4), and one rotating shaft pin (4) is provided with a reset torsion spring (2);

reset torsion spring (2) regards pivot pin (4) as its installation center, and hookup plate (3) revolute pivot pin (4) under the torsion effect of reset torsion spring (2) rotate to be the predetermined contained angle with fixed plate (1) contained angle, the scope of predetermined contained angle is 0-20 degrees, and when slide (5) received the forward pulling force effect and is greater than the torsion of reset torsion spring (2), hookup plate (3) revolute pivot pin (4) and rotate the state to perpendicular to fixed plate (1) to drive slide (5) and fall down.

2. The pull-type wheelchair capable of going upstairs and downstairs as claimed in claim 1, wherein the return torsion spring (2) is a hollow circular torsion spring wound with a spring wire.

3. A pull-type wheelchair system capable of going upstairs and downstairs, characterized in that it comprises a movable electric tractor and a pull-type wheelchair capable of going upstairs and downstairs according to claim 1 or 2, wherein the slide plate (5) of the pull-type wheelchair capable of going upstairs and downstairs is connected with the electric tractor.

4. The towed upstairs or downstairs wheelchair system of claim 3 wherein the electric tractor includes a motor, a speed reducer, a traction sheave, a traction cable, a control device, a connection plate and a traction mount.