Wheelchair controls
First Claim
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1. In a wheelchair having, a power source, a driving wheel on each side of the wheelchair, and at least two motors one motor driving a wheel on one side of the wheelchair and the other motor driving a wheel on the other side of the wheelchair, the improvement comprising:
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Abstract
A control unit for a motorized wheelchair for an invalid the control unit having a part engageable with the occupants chin and being movable in a first direction in order to cause movement of the wheelchair in a forwards direction and in a second and third direction to steer the wheelchair either to the left or to the right, an on/off and reverse/forward switch being provided operable by the occupants head.
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Citations
7 Claims
- 1. In a wheelchair having, a power source, a driving wheel on each side of the wheelchair, and at least two motors one motor driving a wheel on one side of the wheelchair and the other motor driving a wheel on the other side of the wheelchair, the improvement comprising:
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2. a control unit including first and second power control means respectively for controlling the supply of power from the power source, to said one and said other of said motors, and each having an operating member movable from an "at rest" position towards an operated position to increase the power supplied to the respectively controlled motor,an operating means for said first and second control means including:
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a. a chin-engageable part, b. mounting means for mounting the chin-engageable part on said control unit for movement relative thereto in first, second and third directions from an "at rest" position, c. biasing means adapted to bias the chin-engageable part into its "at rest" position, and d. means connecting the chin-engageable part to said operating members of said first and second power control means for transmitting movement thereto in response to movement of said chin-engageable part in said first, second, and third directions respectively to; i. move both of said operating members from their "at rest" positions towards their operated positions, ii. move said operating member of said first power control means from its "at rest" position towards its operated position to an extent greater than any corresponding movement applied to said operating member of said second power control means, and iii. move said operating member of said second power control means from its "at rest" position towards its operated position to an extent greater than any corresponding movement applied to said operating member of said first power control means, and - View Dependent Claims (5)
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- 3. a support member for supporting said control unit in a position with said chin-engageable part in proximity to the chin of an occupant of the wheelchair.
Specification