CN213098864U

CN213098864U - Adjustable electric wheelchair

Info

Publication number: CN213098864U
Application number: CN202020702102.9U
Authority: CN
Inventors: 王尔琪
Original assignee: Changzhou Zhongjin Medical Devices Co ltd
Current assignee: Changzhou Zhongjin Medical Devices Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-05-04
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to an adjustable electric wheelchair, including the main frame, the main frame bottom is equipped with running gear, main frame upper portion is equipped with the seatpad support and the back of the chair support, install the back of the chair on the back of the chair support, the back of the chair rear is provided with angle adjusting device, the seatpad is installed to seatpad support top, seatpad support both sides articulate respectively has the bracing piece, upper end of the support bar articulates in the seatpad support, and the lower extreme articulates in the main frame lower part, the connection of seatpad support below is provided with high adjusting device, high adjusting device includes electric putter, two parallel arrangement's movable rod and connects the dead lever between two movable rods, electric putter movable mounting is on the main frame, and its push rod tip is connected. The utility model discloses a predominant use provides an overall structure is simple, reliable and stable, and convenient operation is nimble, and low in manufacturing cost is convenient for accomodate, the adjustable electric wheelchair that the practicality is strong.

Description

Adjustable electric wheelchair

Technical Field

The utility model relates to a wheelchair, in particular to an adjustable electric wheelchair.

Background

The electric wheelchair is a common medical care rehabilitation device. The electric wheelchair is used as a tool for riding instead of walk, thereby facilitating the traveling of the disabled and the mobility-handicapped people, and leading the users of the wheelchair to better participate in social activities. Meanwhile, the electric wheelchair can help a user to exercise and recover, and the physical quality of the user is improved. The electric wheelchair is added with an electronic power assisting function on the basis of a common wheelchair, so that the exercise intensity and physical strength consumption of a user are reduced. However, the electric wheelchair in the current market occupies a large space, is not required to be stored, has a generally complex structure, is not gentle in seat cushion height adjustment and chair back angle adjustment, is easy to generate impact feeling, and reduces use comfort.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an adjustable electric wheelchair which has simple structure, flexible use, easy operation, convenient maintenance and replacement and high comfort level.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

an adjustable electric wheelchair comprises a main frame, wherein a walking device is arranged at the bottom of the main frame, a seat cushion support and a seat back support are arranged at the upper part of the main frame, a seat back is installed on the seat back support, an angle adjusting device is arranged at the rear part of the seat back, a seat cushion is installed above the seat cushion support, supporting rods are respectively hinged to two sides of the seat cushion support, the upper end of each supporting rod is hinged to the seat cushion support, the lower end of each supporting rod is hinged to the lower part of the main frame, a height adjusting device is connected to the lower part of the seat cushion support and comprises an electric push rod, two movable rods which are arranged in parallel with each other and a fixed rod connected between the two movable rods, the electric push rod is movably installed on the main frame, the end part of the push rod is connected with the fixed rod, the lower end sliding part of the movable rod is in sliding connection with a guide rail correspondingly arranged at the lower part of the main frame in a matched mode, and the middle of the movable rod is hinged to the adjacent supporting rod.

Further, angle adjusting device includes the air spring, the air spring upper end is connected with back of the chair support, the air spring lower extreme is articulated with the main frame.

Further, height adjusting device still includes the stiffener, the stiffener links firmly between dead lever and movable rod, the stiffener has two, is the splayed and distributes.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model is provided with the height adjusting device and the angle adjusting device, which can conveniently adjust the angle of the chair back and the height of the seat cushion of the wheelchair and provide better and more comfortable use experience for users; the height adjusting device adopts an electric push rod, so that a user can directly adjust the height of the comfortable seat without getting off the vehicle, and the sliding part adopts a detachable structure, so that the maintenance and the replacement are convenient; the angle adjusting device adopts an air spring for adjustment, and the rotation is smooth and easy to control; overall structure is simple, and is reliable and stable, convenient operation is nimble, and low in manufacturing cost is convenient for accomodate, and the practicality is strong.

Drawings

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a right side view of the present invention;

FIG. 4 is a schematic view of the middle frame structure of the present invention;

wherein, 1, a main frame; 11. a seat cushion bracket; 12. a chair back bracket; 2. a support bar; 3. a height adjustment device; 31. fixing the rod; 32. a movable rod; 33. a reinforcing bar; 34. an electric push rod; 35. a guide rail; 4. a chair back; 5. a controller; 6. a seat cushion; 7. an angle adjusting device.

Detailed Description

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

It should be noted that, in the description of the technical solutions of the present invention, some directional words, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., used for clearly describing the technical features of the present invention are all in terms of the orientation of the drawings of the present invention.

Examples

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the adjustable electric wheelchair of this embodiment includes a main frame 1, and a traveling device is arranged at the bottom of the main frame 1, and the traveling device mainly includes a pair of front wheels and a pair of rear wheels, and the front wheels are correspondingly installed on a front wheel support at the bottom of the main frame 1 in a matching manner, and the rear wheels are correspondingly installed on a rear wheel support at the bottom of the main frame 1 in a matching manner, and the front wheels and the rear wheels adopt universal wheels, so that the steering is convenient and fast. The upper portion of the main frame 1 is provided with a seat cushion support 11 and a chair back support 12, a chair back 4 is installed on the chair back support 12, an angle adjusting device 7 is arranged behind the chair back 4, the angle adjusting device 7 comprises an air spring, the upper end of the air spring is connected with the chair back support 12, and the lower end of the air spring is hinged to the main frame 1. The expansion of the gas spring can drive the chair back support 12 to rotate by taking the hinge point as the circle center, thereby realizing the angle adjustment of the chair back 4. The gas spring (gasspring) is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. The device mainly comprises the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston. Due to the fundamental difference in principle, the gas spring has the remarkable advantages of relatively slow speed, small dynamic force change (generally within 1: 1.2) and easiness in control over a common spring.

The seatpad 6 is installed to the seatpad support 11 top of this embodiment, as shown in fig. 4, seatpad support 11 includes U type frame, U type frame comprises two parallel arrangement's stock and a perpendicular horizontal pole of connecting in two stock tip, two connecting rods have been linked firmly between two stock, the connecting rod sets up for the stock is perpendicular, be connected with the anchor strut of two piece at least perpendicular settings between two connecting rods, the perpendicular connection is provided with two straight-bars between horizontal pole and the adjacent connecting rod, all be fixed with guide rail 35 on two straight-bars, guide rail 35 arranges along straight-bar length direction, and guide rail 35's cross section is U type groove structure, the both ends in U type groove are provided with the baffle, prevent that the slider from breaking away from the track, guide rail 35. The two sides of the seat cushion support 11 of this embodiment are respectively hinged with a support rod 2, the upper end of the support rod 2 is hinged with the right end of the seat cushion support 11, and the lower end is hinged with the left end of the lower part of the main frame 1 (as shown in fig. 3). The seat cushion support 11 of this embodiment is connected below and is provided with height adjusting device 3, height adjusting device 3 includes electric putter 34, two parallel arrangement's movable rod 32 and connect the dead lever 31 between two movable rod 32 each other, dead lever 31 sets up with movable rod 32 is perpendicular, electric putter 34 movable mounting is on main frame 1, and its push rod tip is connected with dead lever 31, both ends are provided with the slider respectively about movable rod 32, movable rod 32 upper end slider with correspond the guide rail 35 cooperation sliding connection who sets up on seat cushion support 11, movable rod 32 lower extreme slider with correspond the guide rail 35 cooperation sliding connection who sets up in main frame 1 lower part, movable rod 32 middle part is connected with adjacent bracing piece 2 is articulated, movable rod 32 is X type cross structure with adjacent bracing piece 2. When the height adjusting device is used, the fixed rod 31 is driven to move by controlling the stretching of the electric push rod 34, so that the sliding pieces at the upper end and the lower end of the movable rod 32 are driven to move forwards and backwards respectively, the vertical heights of the upper end and the lower end of the movable rod 32 are changed, the seat cushion 6 is driven to move up and down, and the height adjustment of the seat cushion 6 is realized. When the electric push rod 34 extends to the longest, the height of the seat cushion 6 is reduced to the lowest, and meanwhile, the main frame 1 adopts a foldable structure, so that the whole electric wheelchair can be folded, the chair back 4 is folded onto the seat cushion 6, the specific foldable structure adopts the prior art, and the embodiment is not repeated.

Specifically slider includes the pulley in this embodiment, connecting axle and fixation nut, pulley sliding connection is in guide rail 35, the pulley passes through the one end of bearing rotatable coupling in the connecting axle, external screw thread and threaded connection have been seted up on the connecting axle has fixation nut, the mounting hole has been seted up in the cooperation on the movable rod 32, the assorted internal thread has been seted up in the mounting hole, the mounting hole threaded connection of connecting axle and movable rod 32 tip, fixation nut connects soon between pulley and movable rod 32 mounting hole, the connecting axle protrusion is provided with lock nut in the one end of mounting hole, adopt this kind of structure, the pulley connection is reliable and stable, the installation is simple and convenient, can very convenient maintenance and replacement when using the pulley wearing and tearing for a long time, low in manufacturing cost. Height adjusting device 3 still includes stiffener 33 in this embodiment, and stiffener 33 links firmly between dead lever 31 and movable rod 32, and stiffener 33 has two, is the splayed and distributes, can improve structural strength and connection stability. Running gear, height adjusting device 3 and angle adjusting device 7 all with controller 5 electric connection in this embodiment, control its start or stop through controller 5, controller 5 installs on one side handrail, accords with human engineering, and the person of facilitating the use operates.

The adjustable electric wheelchair of the utility model is provided with the height adjusting device 3 and the angle adjusting device 7, so that the angle of the wheelchair back 4 and the height of the seat cushion 6 can be conveniently adjusted, and a user can have better and more comfortable use experience; the height adjusting device 3 adopts the electric push rod 34, so that a user can directly adjust the height of the comfortable seat without getting off the vehicle, and the sliding part adopts a detachable structure, so that the maintenance and the replacement are convenient; the angle adjusting device 7 adopts an air spring for adjustment, and is smooth in rotation and easy to control; overall structure is simple, and is reliable and stable, convenient operation is nimble, and low in manufacturing cost is convenient for accomodate, and the practicality is strong.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. An adjustable electric wheelchair, which is characterized in that: including main frame (1), main frame (1) bottom is equipped with running gear, main frame (1) upper portion is equipped with seatpad support (11) and back of the chair support (12), install back of the chair (4) on back of the chair support (12), back of the chair (4) rear is provided with angle adjusting device (7), seatpad (6) are installed to seatpad support (11) top, seatpad support (11) both sides are articulated respectively to have bracing piece (2), bracing piece (2) upper end articulates in seatpad support (11), and the lower extreme articulates in main frame (1) lower part, seatpad support (11) below is connected and is provided with height adjusting device (3), height adjusting device (3) include electric putter (34), two parallel arrangement's movable rod (32) and connect dead lever (31) between two movable rod (32), electric putter (34) movable mounting is on main frame (1), and its push rod tip is connected with dead lever (31), both ends are provided with the slider respectively about movable rod (32), movable rod (32) upper end slider with correspond guide rail (35) cooperation sliding connection who sets up on seat support (11), movable rod (32) lower extreme slider with correspond guide rail (35) cooperation sliding connection who sets up in main frame (1) lower part, movable rod (32) middle part is connected with adjacent bracing piece (2) are articulated.

2. The adjustable electric wheelchair as claimed in claim 1, wherein: the angle adjusting device (7) comprises an air spring, the upper end of the air spring is connected with the chair back support (12), and the lower end of the air spring is hinged with the main frame (1).

3. The adjustable electric wheelchair as claimed in claim 1 or 2, wherein: height-adjusting device (3) still include stiffener (33), stiffener (33) link firmly between dead lever (31) and movable rod (32), stiffener (33) have two, are the splayed and distribute.