Backward Wheelchair

A backward wheelchair contains two side-frame units, a seat support, and a back support. The two side-frame units are symmetrical and spaced apart, between the two side-frame units is connected a first connecting rod, each side-frame unit includes an auxiliary wheel, each side frame has a main wheel with a manual operating wheel, an armrest, and a handle. The seat support includes an elongated body connecting with a seat portion and is fixed between the two side-frame units, a width of the seat support is less than a distance between the two side-frame units. The backward wheelchair further contains a gate formed on a rear side thereof, and among the seat support and the two side-frame units are defined two passage spaces. The back support is fixed between the two side-frame units so as to facilitate a movement of a patient, and the patient's back contacts with the back support.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a wheelchair, and more particularly to a backward wheelchair which helps a patient having paraplegia or hemiplegia to move easily.

2. Description of the Prior Art

A conventional wheelchair is applied to assist a patient having paraplegia or hemiplegia to move and/or to sit, so the patient enters and sits on the wheelchair from a front side of the wheelchair. When desiring to move to the wheelchair from a bed or to move to the bed from the wheelchair, the patient has to request for someone's help. Therefore, it is not convenient for the patient to move to the bed or the wheelchair.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a backward wheelchair in which a back side of the backward wheelchair is contacted with a bed or a chair, and then a patient holds two armrests of two side-frame units so as to easily move to the backward wheelchair from the bed or the chair easily via a gate and two passage spaces.

Another object of the present invention is to provide a backward wheelchair in which the back side of the backward wheelchair is contacted with the bed or the chair, and then a patient holds the two armrests of the two side-frame units so as to move to the bed or the chair from the backward wheelchair via the gate and the two passage spaces easily.

To obtain the above objectives, a backward wheelchair contains: two side-frame units, a seat support, and a back support.

The two side-frame units are symmetrical and spaced a distance apart, between the two side-frame units is connected a first connecting rod, each side-frame unit includes an auxiliary wheel mounted proximate to a lower side of a front end of each side frame, each side frame has a main wheel disposed adjacent to a rear end thereof, and the main wheel has a manual operating wheel, each side frame further has an armrest mounted on an upper side of the rear end thereof and a handle extending upwardly from the rear end thereof.

The seat support includes an elongated body connecting with a seat portion, the seat support is fixed between the two side-frame units, a width of the seat support is less than the distance between the two side-frame units, the backward wheelchair further contains a gate formed on a rear side thereof, among the seat support and the two side-frame units are defined two passage spaces.

The back support is fixed or rotated between the two side-frame units so as to facilitate a movement of a patient, and the patient's back contacts with the back support.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS. 1-6, a backward wheelchair according to a preferred embodiment of the present invention comprises: two side-frame units1, a seat support2, a back support3, and a top plate4, wherein the two side-frame units1are symmetrical and spaced a distance D1apart, each side-frame unit1includes an auxiliary wheel11mounted proximate to a lower side of a front end of each side frame10, between two lower sides of two front ends of two side frames10is connected a first connecting rod12on which a foot plate121is fixed so as to put a patient's feet, and between two upper sides of the two front ends of the two side frames10is connected a second connecting rod13, wherein each side frame10has a main wheel14disposed adjacent to a rear end thereof, and the main wheel14has a manual operating wheel141, each side frame10also has a manual brake device15disposed on a middle section thereof proximate to the main wheel14(since the manual brake device is a well-known art, further remarks are omitted) and used to brake the main wheel14, wherein the manual brake device15can be kept in a braking state. Each side frame10further has an armrest16mounted on an upper side of the rear end thereof and a handle17extending upwardly from the rear end thereof, between two lower sides of two rear ends of two side frames10is connected a third connecting rod18, and between the armrest16and the handle17is defined a sleeve19, the sleeve19has an orifice191defined therein, a cutout192formed on a top end of an outer peripheral wall thereof, and a through hole193passing through the outer peripheral wall thereof relative to the cutout192. The seat support2includes an elongated body21connecting with a seat portion22, one end of the elongated body21couples with a middle section of the second connecting rod13, another end of the elongated body21connects with a middle section of the third connecting rod18, such that the seat support2is fixed between the two side-frame units1. In addition, a width D2of the seat support2is less than the distance D1between the two side-frame units1, and the backward wheelchair further comprises a gate G formed on a rear side thereof, among the seat support2and the two side-frame units1are defined two passage spaces W. The back support3is fixed or rotated between the two side-frame units1and includes a supporting rack31and a cushion32coupled with the supporting rack31, the supporting rack31has two posts311extending downwardly from two ends thereof, and each post311has an elongated aperture3111arranged on an outer peripheral side thereof and partially inserts into the orifice191of the sleeve19of each side-frame unit1, and a shaft33selectively inserts into the through hole193of the sleeve19of each side-frame unit I or the elongated aperture3111of the post311of the supporting rack31(In this embodiment, the shaft33is a screw, a bolt, or a rivet), such that the back support3is fixed between the two side-frame units1securely so that when the patient sits on the backward wheelchair, his/her back contacts with the back support3. Also, the top plate4is mounted proximate to the two upper sides of the two front ends of the two side frames10so that the patient places objects on the top plate4.

When the patient, who has paraplegia or hemiplegia, is desired to move to the seat portion22or a chair from a bed, as shown inFIGS. 7-10, a back side of the backward wheelchair is contacted with the bed, and then the back support3is pulled upwardly so that each post311of the supporting rack31of the back support3moves upwardly from the orifice191of the sleeve19, and the shaft33slides to a lower end of the elongated aperture3111downwardly from an upper end of the elongated aperture3111of each post311, such that the shaft33matches with the cutout192of the sleeve19, thereafter the back support3is rotated outwardly, and the main wheel14is kept in the braking state by ways of the manual brake device15, such that the patient holds the two armrests16of the two side-frame units1so as to move to and sit on the seat portion22of the seat support2from the bed or the chair via the gate G and the two passage spaces W. Thereafter, the back support3is rotated inwardly, and the two posts311of the back support3are partially inserted into two orifices191of two sleeves19of the two side-frame units1so that the back support3is fixed between the two side-frame units1, hence as sitting on the seat portion2, the patient's back contacts with the back support3, and the manual brake device15is released from the barking state, so the patient moves two manual operating wheels141with two hands to drive the backward wheelchair to move. Furthermore, when the patient is desired to move to the bed or the chair from the backward wheelchair, the back side of the backward wheelchair is contacted with the bed or the chair, and the back support3is rotated outwardly, then two main wheels14are kept in the braking state by ways of two manual brake devices15, such that the patient holds the two armrests16of the two side-frame units1so as to move backwardly to sit on the bed or the chair from the seat portion22via the gate G and the two passage spaces W.

When the patient intends to move to a toilet from the backward wheelchair, as illustrated inFIG. 11, the backward wheelchair is abutted against the toilet, and then the back support3is rotated outwardly, thereafter the two main wheels14are kept in the braking state by using the two manual brake devices15, such that the patient holds the two armrests16of the two side-frame units1so as to move backwardly to the toilet from the seat portion22via the gate G and the two passage spaces W.

Thereby, the backward wheelchair of the present invention has the following advantage:

In use, the back side of the backward wheelchair is contacted with the bed or the chair, and then the patient holds the two armrests16of the two side-frame units1so as to move to the backward wheelchair from the bed or the chair or to move to the bed or the chair from the backward wheelchair via the gate G and the two passage spaces W easily.

Referring further toFIG. 12, a backward wheelchair according to another embodiment of the present invention comprises a protective sheet1amounted among the two side frames10and the two main wheels14of two side-frame units1so as to protect the patient.