CN106923977A - A kind of wheelchair with liftable - Google Patents

Abstract

The invention provides a lifting wheelchair, which is characterized in that it has: a chair frame; a seat; a lifting device installed on the chair frame for lifting the seat; and a control assembly for controlling the lifting device, wherein The lifting device includes a lifting hydraulic component, a driving hydraulic component that drives the lifting hydraulic component to rise and fall, an oil storage chamber, and an oil circuit unit used to communicate with the lifting hydraulic component, the driving hydraulic component and the oil storage cavity. The control component includes a hand crank Rod, oil return handle, the lifting hydraulic component has a lifting cylinder for lifting the seat, and the hand rocker controls the connection and cut-off of the oil circuit unit through the lever structure to control the oil intake of the lifting cylinder, and then the seat rises or Stop rising, and the oil return handle controls the oil return of the lifting cylinder by controlling the connection and cut-off of the oil circuit unit, so as to lower or stop the seat seat.

Description

lift wheelchair

technical field

The invention relates to a wheelchair, in particular to an elevating wheelchair.

Background technique

China is a country with a large population and a large number of disabled people, especially those with lower limbs. They cannot take care of themselves completely. They have many difficulties in travel or sports. They need the help of others to solve them. When they are alone Facing a life isolated from the outside world.

At present, people with lower limb disabilities can only rely on ordinary wheelchairs as a means of transportation to meet the needs of simple travel.

However, it is difficult for the elderly and lower-limb disabled people who use ordinary wheelchairs to complete actions such as taking high objects and going to bed without the help of others. However, there is no device that meets this demand on the market now, which increases the number of elderly and disabled people. Potential safety hazards or inconvenience of going out when the disabled are alone at home.

Contents of the invention

In order to solve the above problems, the present invention adopts the following technical solutions:

The invention provides a lifting wheelchair, which is characterized in that it has: a chair frame; a seat; a lifting device installed on the chair frame for lifting the seat; and a control assembly for controlling the lifting device, wherein The lifting device includes a lifting hydraulic component, a driving hydraulic component that drives the lifting hydraulic component to rise and fall, an oil storage chamber, and an oil circuit unit used to communicate with the lifting hydraulic component, the driving hydraulic component and the oil storage cavity. The control component includes a hand crank Rod, oil return handle, the lifting hydraulic component has a lifting cylinder that lifts the seat, and the hand rocker controls the connection and cut-off of the oil circuit unit through the lever structure to control the oil intake of the lifting cylinder, thereby allowing the seat to rise or Stop rising, and the oil return handle controls the oil return of the lifting cylinder by controlling the connection and cut-off of the oil circuit unit, so as to lower or stop the seat seat.

An elevating wheelchair of the present invention can also have such features, wherein the lifting hydraulic assembly also has: a base fixedly installed on the chair frame; a telescopic rod arranged in the lifting cylinder, the lower end of which It is installed on the base; and the top plate is fixedly installed on the lifting oil cylinder, and the seat seat is fixedly installed on the top plate.

An elevating wheelchair of the present invention may also have the following feature: wherein, the driving hydraulic assembly has a driving cylinder and a piston unit arranged in the driving cylinder.

An elevating wheelchair of the present invention may also have such features, wherein the piston unit has: a piston cover, which is covered on the driving cylinder; a piston rod, which is arranged in the driving cylinder, and the upper end of the piston rod passes through the piston cover; and The piston is arranged inside the driving cylinder and connected with the lower end of the piston rod.

A lifting type wheelchair of the present invention may also have such a feature: wherein, the hand rocker is L-shaped, has a horizontal part and a vertical part, and a connecting rod is hinged on the end of the horizontal part away from the vertical part, and the connecting rod The lower end of the lever is hinged with the piston cover, and the middle part of the horizontal part is hinged with the upper end of the piston rod to form a lever structure.

An elevating wheelchair of the present invention can also have the following features, wherein the oil circuit unit has: an oil inlet pipeline communicated with the driving cylinder and the lifting cylinder; an oil return pipeline communicating with the oil storage chamber, the driving cylinder and the lifting cylinder; The oil cylinders are connected to each other; the oil inlet check valve is set in the oil inlet pipeline, which is used to make the oil flow from the driving cylinder to the lifting cylinder; the oil return check valve is set in the oil return pipeline, and is used to make the oil flow to the oil storage chamber The driving oil cylinder; and the oil return switch are arranged in the oil return pipeline and connected with one end of the oil return handle so that the oil flows from the lifting oil cylinder to the oil storage chamber.

Invention function and effect

According to an elevating wheelchair of the present invention, due to the use of a hand rocker elevating device, it can meet the needs of the disabled to independently raise the wheelchair and look forward to self-care, and help the disabled to carry out free daily life without the assistance of others. Life and travel have improved the self-care ability of the disabled; due to the use of the hand rocker to control the lifting device, the disabled can freely adjust the height of the wheelchair, and can exercise the upper limb strength of the disabled while lifting the wheelchair, helping the disabled to improve its physical fitness.

Description of drawings

Fig. 1 is a schematic structural view of a lifting wheelchair according to an embodiment of the present invention;

Fig. 2 is a schematic side view of the structure of the lifting device and the control assembly according to the embodiment of the present invention;

Fig. 3 is a schematic side view of the front structure of the lifting device and the control assembly according to the embodiment of the present invention;

Fig. 4 is A-A sectional view of Fig. 3;

Fig. 5 is an enlarged schematic diagram of the driving hydraulic assembly of the lifting device according to the embodiment of the present invention;

Fig. 6 is a schematic diagram of the structure of the hand rocker lever of the lifting device according to the embodiment of the present invention.

detailed description

The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

<Example>

Fig. 1 is a structural schematic diagram of a lifting wheelchair according to an embodiment of the present invention.

As shown in FIG. 1 , a lifting wheelchair 100 provided by the present invention includes a chair frame 1 , a seat 2 , a lifting device 3 , and a control assembly 4 .

The lifting device 3 and the control assembly 4 are arranged on the chair frame 1, and the control assembly 4 controls the lifting device 3 to raise and lower the seat.

Fig. 2 is a schematic side view of the structure of the lifting device and the control assembly of the embodiment of the present invention, Fig. 3 is a schematic side view of the front structure of the lifting device and the control assembly of the embodiment of the present invention, and Fig. 4 is a sectional view of A-A of Fig. 3 .

As shown in FIG. 2 , FIG. 3 and FIG. 4 , the lifting device 3 includes a lifting hydraulic component 31 , a driving hydraulic component 32 , an oil storage chamber 33 and an oil circuit unit 34 .

The lifting hydraulic assembly 31 includes a base 311 , a lifting cylinder 312 , a telescoping rod 313 and a top plate 314 .

The base 311 is fixedly installed on the chair frame 1, the telescopic rod 313 is arranged in the lifting cylinder 312, the lower end of the telescopic rod 313 is fixedly mounted on the base 311, the top plate 314 is fixedly mounted on the lifting cylinder 312, and the seat base 2 is fixedly installed on the top plate 314 .

Fig. 5 is an enlarged schematic diagram of the driving hydraulic assembly of the lifting device according to the embodiment of the present invention.

As shown in FIG. 5 , the driving hydraulic assembly 32 includes a driving cylinder 321 and a piston unit 322 . The piston unit 322 is disposed in the driving cylinder 321, and the piston unit 322 includes a piston cover 322a, a piston rod 322b, and a piston 322c.

The piston cover 322a is covered on the driving cylinder 321, the piston rod 322b is arranged in the driving cylinder 321, the upper end of the piston rod 322b passes through the piston cover 322a, and the piston 322c is arranged in the driving cylinder 321 and is connected with the lower end of the piston rod 322b.

The oil storage chamber 33 is disposed on one side of the driving cylinder 321 for storing oil.

The oil circuit unit 34 includes an oil inlet pipeline 341 , an oil return pipeline 342 , an oil inlet check valve 343 , an oil return check valve 344 and an oil return switch 345 .

The oil inlet pipeline 341 communicates with the driving cylinder 321 and the lifting cylinder 311, and the oil return pipeline 342 communicates with the oil storage chamber 33, the driving cylinder 321 and the lifting cylinder 311.

The oil inlet check valve 343 is arranged in the oil inlet pipe 341 and placed at the bottom of the driving cylinder 321 , and the oil inlet check valve 343 is used to make oil flow from the driving cylinder 321 to the lifting cylinder 311 .

The oil return check valve 344 is arranged in the oil return pipeline 342 and placed at the bottom of the driving cylinder 321 , and the oil return check valve 344 is used to make the oil storage chamber 33 flow to the driving cylinder 321 .

The oil return switch 345 is arranged in the oil return pipeline 342 to make the oil flow back from the lifting cylinder 311 to the oil storage cavity 33 .

Fig. 6 is a schematic diagram of the structure of the hand rocker lever of the lifting device according to the embodiment of the present invention.

As shown in FIG. 6 , the control assembly 4 includes a hand rocker 41 and an oil return handle 42 .

The hand rocker 41 is L-shaped and has a horizontal portion 411 and a vertical handle 412 .

One end of the horizontal part 411 away from the handle 412 is hinged with a connecting rod 413. The lower end of the connecting rod 413 is hinged on the upper end of the piston cover 322a, and the middle part on the horizontal part 411 is hinged with the upper end of the piston rod 322b to form a lever structure. The hydraulic component 32 is driven to control the connection and disconnection of the oil circuit unit 34 , and then to control the oil intake of the lift cylinder 311 , and finally to make the seat 2 rise or stop rising.

The lower end of the oil return handle 42 is connected with the oil return switch 345 to control the connection and disconnection of the oil circuit unit 34 so as to control the oil return of the lifting cylinder 311, and then the seat 2 is lowered or stopped.

The working process of the lifting wheelchair 100 of this embodiment will be described below with reference to the accompanying drawings.

As shown in Figure 4 and Figure 5, manually pull up the handle 412, the handle 412 drives the hand rocker 41 upward, the hand rocker 41 forms a lever structure with the piston cover 322a and the piston rod 322b of the driving hydraulic assembly 32, and drives the piston rod 322b to do The movement in the vertical upward direction, so that the piston rod 322b drives the piston 322c to move upward. The upward movement of the piston 322c makes the piston 322c and the bottom of the driving cylinder 321 form a negative pressure, drives the oil inlet check valve 343 to close, and drives the oil return check valve 344 to open at the same time, so that the hydraulic oil passes through the oil return pipeline from the oil storage chamber 33 342 enters the bottom of the drive cylinder 33 to realize the injection of hydraulic oil.

As shown in Figure 4 and Figure 5, manually press the handle 412 downward, the handle 412 drives the hand rocker 41 downward, the hand rocker 41 drives the piston unit 322 to move vertically downward, and the piston 322c and the driving cylinder 321 High pressure is formed at the bottom, the oil return check valve 344 is driven to close, and the oil inlet check valve 343 is driven to open simultaneously, so that the hydraulic oil in the drive cylinder 33 is injected into the lift cylinder 311 through the oil inlet pipeline 341 . The hydraulic oil that injects in the lifting oil cylinder 311 presses the extension rod 313 to elongate, realizes the lifting of the lifting device 3, and raises the seat 2 simultaneously.

As shown in FIGS. 2 and 5 , turn the oil return handle 42 , the oil return switch 345 connected to the lower end of the oil return handle 42 is opened, and the hydraulic oil inside the lifting cylinder 311 enters the oil storage chamber 33 through the oil return pipe 342 . The oil pressure in the lifting oil cylinder 311 decreases, and the telescopic rod 313 retracts, so that the lifting device 3 is lowered, and the seat 2 is lowered simultaneously.

Function and effect of embodiment

According to an elevating wheelchair of this embodiment, due to the adoption of the elevating device, the disabled can quickly ascend or descend, which can meet the needs of the disabled to independently raise the wheelchair and expect to take care of themselves, and help the disabled It needs the assistance of others to carry out free daily life and travel, which improves the self-care ability of the disabled; because the hand rocker is used to control the lifting device, the disabled can easily and freely adjust the height of the wheelchair, and can exercise while lifting the wheelchair. The upper body strength of the disabled, helping the disabled to improve their physical fitness, thereby improving the quality of life.

Claims (6)

1. a kind of wheelchair with liftable, it is characterised in that have：

Chair frame；

Seat support；

Lowering or hoisting gear, in the chair frame, for being lifted to the seat support；And

Control assembly, for controlling the lowering or hoisting gear,

Wherein, the lowering or hoisting gear includes lifting hydraulic package, the driving hydraulic package, the storage that drive the lifting hydraulic package to lift Oil pocket and the oil circuit unit for connecting the lifting hydraulic package, the driving hydraulic package and the shoe cream room,

The control assembly includes joystick, oil return handle,

The lifting hydraulic package has the elevating ram of seat support described in lifting,

Connection and cut-out of the joystick by lever construction to the oil circuit unit are controlled so as to control the lifting The oil-feed of oil cylinder, and then allow the seat support to rise or stop rising,

The oil return handle is controlled so as to control the elevating ram by the connection to the oil circuit unit and cut-out Oil return, and then allow the seat support to decline or stop declining.

2. a kind of wheelchair with liftable according to claim 1, it is characterised in that：

Wherein, the lifting hydraulic package also has：

Base, is fixedly mounted in the chair frame；

Expansion link, is arranged in the elevating ram, and the lower end of the expansion link is fixedly mounted on the base；And

Top board, is fixedly mounted on the elevating ram, and the seat support is fixedly mounted on the top board.

3. a kind of wheelchair with liftable according to claim 1, it is characterised in that：

Wherein, the driving hydraulic package has driving oil cylinder and is arranged at the in-oil cylinder piston unit of driving.

4. a kind of wheelchair with liftable according to claim 3, it is characterised in that：

Wherein, the piston unit has：

Piston cap, covers on the driving oil cylinder；

Piston rod, is arranged in the driving oil cylinder, and the piston cap is run through in the upper end of the piston rod；And

Piston, is arranged on driving oil cylinder inside and is connected with the lower end of the piston rod.

5. a kind of wheelchair with liftable according to claim 4, it is characterised in that：

Wherein, the joystick is L-shaped, with horizontal part and vertical portion,

One end on the horizontal part away from the vertical portion is hinged with connecting rod, and the lower end of the connecting rod is hinged with the piston cap,

Middle part on the horizontal part is hinged with the upper end of the piston rod, constitutes the lever construction.

6. a kind of wheelchair with liftable according to claim 1, it is characterised in that：

Wherein, the oil circuit unit has：

Inflow pipeline, connects with the driving oil cylinder and the elevating ram；

Oil returning tube, is interconnected with the shoe cream room, the driving oil cylinder and the elevating ram；

In line check valve, is arranged in the inflow pipeline, for making oil flow to the elevating ram from the driving oil cylinder：

Return check valve, is arranged in the oil returning tube, for making the oily shoe cream room flow to the driving oil cylinder；And

Oil return is switched, and is arranged in the oil returning tube, and the one end with the oil return handle is connected, and makes oil from the elevating ram Flow to the shoe cream room.