Tilt mechanism for the movable part of a stairlift guide
The present invention relates to a device for transport along a staircase of persons and/or goods, which staircase extends between two platforms, and wherein the device includes: a guide which in the arranged situation extends at least along the staircase, a stationary segment and at least one tiltable segment; a tilting mechanism between the segments so as to selectively tilt the tiltable segment between a position lying in line with the stationary segment and a position substantially folded out of the space above one of the platforms; a carriage with transport means for persons and/or goods and a drive for advancing movement along the guide; and a transmission to selectively engage the carriage in the vicinity of the tilting mechanism to transmit movement of the carriage along the guide onto the tiltable segment for a tilting movement thereof.
1. A device for transport along a staircase of persons and/or goods, which staircase extends between two platforms, the device comprising:
a guide which in the arranged situation extends at least along the staircase and includes a stationary segment and at least one movable segment;
a mechanism between the segments configured to selectively move the movable segment between a position lying in line with the stationary segment and a position substantially out of the space above one of the platforms;
a carriage with transport means for persons and/or goods having a drive for advancing movement along the guide; and
a transmission adapted to selectively engage the carriage in the vicinity of the tilting mechanism for transmitting movement of the carriage along the guide onto the movable segment for movement thereof, wherein the movable segment is tiltable and the mechanism is a tilting mechanism for the transmission to selectively tilt the tiltable segment to and from the position out of the space, in which position the tiltable segment is folded away;
wherein the transmission comprises an arm movable substantially in a longitudinal direction of the guide and engaging means for selective engagement of the carriage, the transmission coupled to the tiltable segment; and
wherein the engaging means comprise a lever with an engaging means for the carriage, the lever connected by means of a bush and a clamp connection to the arm and arranged pivotally on the guide.
2. The device as claimed in claim 1 , further comprising a safety portion to prevent tilting of the pivotable segment if a resistance thereto occurs which is higher than a desired threshold resistance.
3. The device as claimed in claim 2 , wherein the transmission is slip-free, and wherein a transmission ratio is selected subject to the distance to be covered by the arm in the longitudinal direction of the guide so as to tilt the tiltable segment between the positions thereof
4. The device as claimed in 1 , wherein the connection between the arm and the lever is adapted to be broken at the threshold resistance or a higher resistance.
5. The device as claimed in claim 4 , wherein the transmission is slip-free, and wherein a transmission ratio is selected subject to the distance to be covered by the arm in the longitudinal direction of the guide so as to tilt the tiltable segment between the positions thereof
6. The device as claimed in claim 1 , wherein the transmission has a selected transmission ratio.
7. The device as claimed in claim 6 , wherein the transmission is slip-free, and wherein a transmission ratio is selected subject to the distance to be covered by the arm in the longitudinal direction of the guide so as to tilt the tiltable segment between the positions thereof
8. The device as claimed in 1 , wherein the transmission is slip-free, and wherein a transmission ratio is selected subject to the distance to be covered by the arm in the longitudinal direction of the guide so as to tilt the tiltable segment between the positions thereof.
9. The device as claimed in claim 8 , wherein the transmission is a gear rack on the arm, a toothed wheel on the tiltable segment or a rod assembly on the tiltable segment.
10. The device as claimed in claim 9 , wherein a transmission ratio is determined by the diameter of the toothed wheel.
11. The device as claimed in claim 1 , wherein the device is a stair lift or a stair walking aid.
12. The device as claimed in claim 1 , wherein the transport means is a chair or a hand grip.
13. A guide for a device for transport along a staircase of persons and/or goods with a carriage with transport means for persons and/or goods, and with a drive for advancing movement along the guide, which staircase extends between two platforms, and wherein, in the arranged situation, the guide extends at least along the staircase, the guide comprising:
a stationary segment and at least one tiltable segment;
a tilting mechanism between the segments configured to selectively tilt the tiltable segment between a position lying in line with the stationary segment and a position folded out of the space above one of the platforms; and
a transmission adapted to selectively engage the carriage in the vicinity of the tilting mechanism so as to transmit movement of the carriage along the guide onto the tiltable segment for a tilting movement thereof;
wherein the transmission comprises an arm movable substantially in a longitudinal direction of the guide and engaging means for selective engagement of the carriage, the transmission coupled to the at least one tiltable segment;
wherein the engaging means comprise a lever with an engaging means for the carriage, the lever connected by means of a bush and a clamp connection to the arm and arranged pivotally on the guide.
14. The device as claimed in claim 13 , wherein the device is a stair lift or a stair walking aid.
15. The device as claimed in claim 13 , wherein the transport means is a chair or a hand grip.