JPH0445701Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an electric wheelchair for physically disabled people.

(Prior art) Electric wheelchairs include regular four-wheeled wheelchairs that have a pair of idle wheels attached to the lower front part of the chair and a pair of drive wheels attached to the rear, and three-wheeled ones that have front wheels that can be steered using a steering handle. There are two forms.

(Problems to be solved by the invention) A four-wheel electric wheelchair with all wheels located below the chair has a short body and is suitable for indoor use, but lacks stability when used outdoors. or,
The maneuvering method is complicated and the maneuverability is poor.

In addition, three-wheeled electric wheelchairs have good operability because the front wheels are controlled directly by the control handle, and the body is long and stable, making them suitable for outdoor driving, but not suitable for indoor driving. The turning radius is large and inappropriate.

This invention aims to eliminate the drawbacks of the prior art as described above and provide an electric wheelchair that can be driven indoors and outdoors.

(Means for solving the problem) A front machine frame 3 to which a control handle 1 and a front wheel 2, etc. are mounted, and a rear machine frame 7 to which a drive box 4 is mounted and rear wheels 5, 5, a chair 6, etc. are mounted. is configured to be detachable via a connector 8, and auxiliary wheels 9, 9 are provided on the front part of the rear machine frame 7 so as to be detachable or tiltable.

(Operations and effects of the invention) When traveling outdoors, the front machine frame 3 to which the control handle 1, front wheels 2, etc. are mounted, and the drive box 4
By connecting the rear wheels 5, 5 and the rear machine frame 7 to which the chair 6, etc. is attached by means of a connector 8 to form a three-wheeled electric wheelchair, stable running performance and handle operation can be achieved. This ensures good maneuverability.

In addition, when traveling indoors, the front machine frame 3 and the rear machine frame 7 are separated by removing the connector 8, and
By attaching the auxiliary wheels 9, 9 to the front part of the rear machine frame 7, or by raising the auxiliary wheels 9, 9 if they are stored in the rear machine frame 7, The rear machine frame 7 is supported by rear wheels 5, 5 and auxiliary wheels 9, 9. Therefore, the overall length of the aircraft can be shortened and the aircraft can be sufficiently run even in a narrow indoor space. In addition, when traveling indoors, a method in which a caregiver pushes the wheelchair by hand, a manual wheelchair method in which the passenger manually drives the wheelchair, and a power wheelchair method in which a joy stay control device is installed on the rear aircraft frame 7 side are adopted. can.

(Embodiment) In the illustrated example, the front machine frame 3 has a footrest plate 10 integrally formed on its upper surface, and is equipped with a front wheel 2 serving as a control wheel and a control handle 1. Reference numeral 11 denotes a control box to which a headlamp is mounted at the front, and is configured to be able to control the running speed, etc.

A drive box 4 containing a battery, a motor, etc. is mounted on the rear machine frame 7, and a chair 6 is mounted on the drive box 4. 12 is an armrest of the chair 6, and 13 is a control handle for the caregiver. A clutch lever 14 connects and disconnects the power transmission path between the rear wheels 5, 5 and the drive box 4, thereby allowing the rear wheels 5, 5 to rotate freely.

The connector 8 is composed of a front connector 8a that protrudes rearward from the front frame 3 and a rectangular cylindrical rear connector 8b that protrudes forward from the rear frame 7. It is constructed so that it can be fixed with a stopper 15.

Reference numeral 16 denotes a stand, which is pivotally supported at the rear of the front machine frame 3 so that it can be raised and lowered, and is erected to support the front machine frame 3 when separated from the rear machine frame 7.

The auxiliary wheels 9, 9 are connected to a connecting plate 17 which also serves as a footrest.
A fitting (not shown) provided at the rear center of the connecting plate 17 is configured to be detachable and fit into the rear connecting fitting 8b of the rear machine frame 7. 18, 18 are plugs for electrical wiring connection.

When traveling outdoors, the front connector 8a is fitted into the rear connector 8b and fixed with the stopper 15 to connect the front machine frame 3 and the rear machine frame 7, and the three-wheeled power transmission wheelchair is connected. Configure. The passenger can easily control the aircraft by accurately rotating the front wheels 2 by operating the control handle 1, and also controls the aircraft by using the rear wheels 5, 5 below the chair 6 and the front wheels 2 provided on the front frame 3. It can be stably supported and run.

When traveling indoors, the stopper 15 is removed and the front connector 8a is taken out from the rear connector 8b to separate the front and rear machine frames 3 and 7. Next, the fittings of the connecting plate 17 are fitted into the connecting fittings 8b of the rear machine frame 7 and fixed with the fasteners 15. Therefore, the rear machine frame 7 is supported by the rear wheels 5, 5 and the floating auxiliary wheels 9, 9 attached to the connecting plate 17, and can be easily moved even in a narrow indoor space using only the rear machine frame 7, which has a short body length. It is something.

Further, in the embodiment shown in FIG. 3, the auxiliary wheels 9,
9 is provided in the front part of the rear machine frame 7 so that it can be raised and lowered freely, and an arm 2 is attached to the end of the shaft 20, which is rotatably supported by bearings 19, 19 fixed to the rear machine frame 7.
1, 21 are attached, and auxiliary wheels 9, 9 are provided at the lower ends of the arms 21, 21. Note that the arm 21,
The fixing means 21 is performed by a stopper, a spring beyond the dead center, or the like.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
2 is a perspective view of the entire system, FIG. 2 is a perspective view of the entire system showing the operating state, and FIG. 3 is a perspective view of another embodiment. In the figure, 1 is the control handle, 2 is the front wheel, 3 is the front frame, 4 is the drive box, 5 is the rear wheel, 6 is the chair, 7 is the rear frame, 8 is the coupling, and 9 is the auxiliary wheel. show.

Claims (1)

[Scope of utility model registration request] A front machine frame 3 on which a control handle 1, front wheels 2, etc. are mounted, and a rear machine frame 7 on which a drive box 4 is mounted and rear wheels 5, 5, a chair 6, etc. are mounted can be freely attached and detached via a connector 8. This electric wheelchair is provided with auxiliary wheels 9, 9 on the front part of a rear machine frame 7 so that they can be attached and detached or raised and lowered.