CN2827326Y

CN2827326Y - Frame structure of electric wheel-chair

Info

Publication number: CN2827326Y
Application number: CN 200520111789
Authority: CN
Inventors: 黄少诗
Original assignee: Dongyi Science & Tech Co Ltd
Current assignee: Dongyi Science & Tech Co Ltd
Priority date: 2005-07-08
Filing date: 2005-07-08
Publication date: 2006-10-18
Anticipated expiration: 2015-07-08

Abstract

The utility model discloses a frame structure of electric wheelchair, which mainly comprises a wheelchair frame, a connecting rod, a front wheel frame, a rear wheel frame and an elastic component, wherein the front section of the wheelchair frame is pivoted with the middle section of the front wheel frame and the rear section of the wheelchair frame is pivoted with the middle section of the rear wheel frame. The front end of the front wheel frame is pivoted with a front wheel, and the rear end of the front wheel frame is pivoted with the lower end of the connecting rod; the middle section of the connecting rod is pivoted with the front end of the rear wheel frame, and the upper end of the connecting rod is pivoted with one end of the elastic component. The rear end of the rear wheel frame is pivoted with a back wheel, a main wheel is pivoted below the front section of the rear wheel frame and the other end of the elastic component is pivoted above the front section of the rear wheel frame. The front wheel frame or the rear wheel frame which waves and swings because of uneven ground can be absorbed by the connecting rod and the elastic component to cause the wheelchair frame to be kept in a horizontal state to enable the wheelchair to move on the flat ground similarly to achieve the efficacy of safety, smoothness and comfort for users.

Description

The chassis structure of electric wheelchair

Technical field

This utility model relates to a kind of chassis structure of electric wheelchair.

Background technology

Electric wheelchair or electric bicycle have been one of handicapped necessary vehicles of old people, and for making user more comfortable when taking, its chassis structure all is provided with the main wheel of electro-motor transmission in chair frame both sides, and be respectively equipped with front wheel carrier and rear wheel frame before and after the chair frame, the auxiliary main wheel to articulate front-wheel or trailing wheel respectively, thereby can travel on safely on the uneven road surface, wherein on the front wheel carrier of some car type and the rear wheel frame shock absorber is installed, but so as to the vibrations of absorption portion when travelling on uneven road surface, and comparatively comfortable.

But, because of chair frame and front wheel carrier and rear wheel frame are to be fixed together in fact, though utilize the shock absorber shock-absorbing, the chair frame in fact still can jolt because of the road surface height rises and falls, especially chair frame bottom often becomes the angle of inclination with horizontal plane, for user, the chair frame also is a dipping and heaving with respect to ground, can allow user feel ill.

In addition, for asking safety, after car body bore the weight of user at the chair frame, center of gravity can be near the rear wheel place, thereby was travelling when jolting the road surface, and front vehicle wheel regular meeting perk and unsettled a little allows user feel dangerous.

The utility model content

The purpose of this utility model is to provide a kind of chassis structure of electric wheelchair, and it can allow the chair frame keep level and just like travelling on the smooth ground, so that allow user feel safe, steadily and comfortable.

For achieving the above object, technical solution of the present utility model is: a kind of chassis structure of electric wheelchair, and it mainly comprises chair frame, connecting rod, front wheel carrier, rear wheel frame and elastic component, wherein: the chair frame comprises leading portion and back segment; Connecting rod comprises upper end, stage casing and lower end; Front wheel carrier comprises front-wheel, front end, stage casing and rear end; Rear wheel frame comprises trailing wheel, main wheel, front end, leading portion, stage casing and rear end; Elastic component comprises an end and the other end; During assembling, the leading portion of chair frame is articulated in the stage casing of front wheel carrier, the back segment of chair frame then is articulated in the stage casing of rear wheel frame, the front end of front wheel carrier articulates front-wheel, and the rear end of front wheel carrier articulates the lower end of connecting rod, and the stage casing of connecting rod articulates the front end of rear wheel frame, the upper end of connecting rod then articulates an end of elastic component, and the rear end of rear wheel frame articulates trailing wheel, and the leading portion of rear wheel frame below pivot joint main wheel, and the leading portion top of rear wheel frame then articulates the other end of elastic component.

This elastic component is a bolster.This bolster is the elastomer of rubber-like.

After adopting such scheme, this utility model can by connecting rod and elastic component absorbs front wheel carrier or rear wheel frame is swung because of the fluctuating of uneven ground, thereby allow its chair frame held stationary advance, promptly allow the chair frame remain on level and just like travelling on the smooth ground, and then reach and allow user feel safe, steadily and comfortable effect.

Description of drawings

Fig. 1 is an axonometric chart of the present utility model;

Fig. 2 is a combination of side view of the present utility model;

Fig. 3 is one of action sketch map of the present utility model;

Fig. 4 is two of an action sketch map of the present utility model.

The element numbers explanation:

1 chair frame, 2 connecting rods, 3 front wheel carriers

4 rear wheel frames, 5 elastic components, 11 leading portions

22 stage casings, 12 back segments, 21 upper ends

23 lower ends, 31 front-wheels, 32 front ends

34 rear ends, 33 stage casings, 41 trailing wheels

42 main wheels, 43 front ends, 44 leading portions

46 rear ends, 45 stage casings, 51 1 ends

52 other ends

The specific embodiment

As shown in Figures 1 and 2, this utility model mainly comprises chair frame 1, connecting rod 2, front wheel carrier 3, rear wheel frame 4 and elastic component 5, wherein:

Chair frame 1 comprises leading portion 11 and back segment 12;

Connecting rod 2 comprises upper end 21, stage casing 22 and lower end 23;

Front wheel carrier 3 comprises front-wheel 31, front end 32, stage casing 33 and rear end 34;

Rear wheel frame 4 comprises trailing wheel 41, main wheel 42, front end 43, leading portion 44, stage casing 45 and rear end 46;

Elastic component 5 comprises an end 51 and the other end 52, and present embodiment is a bolster, i.e. the elastomer of rubber-like, and it also can be spring, pneumatic cylinder, oil hydraulic cylinder, and the equivalence that is this example is replaced.

During assembling, the leading portion 11 of chair frame 1 is articulated in the stage casing 33 of front wheel carrier 3, the back segment 12 of chair frame 1 then is articulated in the stage casing 45 of rear wheel frame 4, the front end 32 of front wheel carrier 3 articulates front-wheel 31, the rear end 34 of front wheel carrier 3 articulates the lower end 23 of connecting rod 2, the stage casing 22 of connecting rod 2 articulates the front end 43 of

rear wheel frame

4,21 ends 51 that articulate elastic component 5 in the upper end of connecting rod 2, and the rear end 46 of rear wheel frame 4 articulates trailing wheel 41, and leading portion 44 belows of rear wheel frame 4 articulate main wheel 42, and leading portion 44 tops of rear wheel frame 4 then articulate the other end 52 of elastic component 5.

When road bump, as shown in Figures 3 and 4, main wheel 42 is butted on the ground because of the back partially perseverance of whole center of gravity with trailing wheel 41, and because of front wheel carrier 3 and rear wheel frame 4 are articulated in respectively on the chair frame 1, the front-wheel 31 of front wheel carrier 3 also can be butted on ground, thereby allow the rear end of front wheel carrier 3 and the front end of rear wheel frame 4 pass through connecting rod 2 compression elastic pieces 5, and by the fully swing of absorption front wheel carrier 3 (or rear wheel frame 4) of elastic component 5, thereby can not influence rear wheel frame 4 (or front wheel carrier 3), and then allow chair frame 1 remain on level, just like travelling on the smooth ground, allow user feel safe, steadily with comfortable.

Claims

1, a kind of chassis structure of electric wheelchair is characterized in that it mainly comprises chair frame, connecting rod, front wheel carrier, rear wheel frame and elastic component, wherein:

The chair frame comprises leading portion and back segment;

Connecting rod comprises upper end, stage casing and lower end;

Front wheel carrier comprises front-wheel, front end, stage casing and rear end;

Rear wheel frame comprises trailing wheel, main wheel, front end, leading portion, stage casing and rear end;

Elastic component comprises an end and the other end;

During assembling, the leading portion of chair frame is articulated in the stage casing of front wheel carrier, the back segment of chair frame then is articulated in the stage casing of rear wheel frame, the front end of front wheel carrier articulates front-wheel, and the rear end of front wheel carrier articulates the lower end of connecting rod, and the stage casing of connecting rod articulates the front end of rear wheel frame, the upper end of connecting rod then articulates an end of elastic component, and the rear end of rear wheel frame articulates trailing wheel, and the leading portion of rear wheel frame below pivot joint main wheel, and the leading portion top of rear wheel frame then articulates the other end of elastic component.

2, the chassis structure of electric wheelchair according to claim 1, it is characterized in that: this elastic component is a bolster.

3, as the chassis structure of electric wheelchair as described in the claim 2, it is characterized in that: this bolster is the elastomer of rubber-like.