A foldable stroller (1, 41) is provided with at least one pushrod (2, 3) being pivotable about a first pivot axis (9, 10). The folding mechanism is further provided with a number of rods, comprising a first rod (19, 20) being pivotable about a second pivot axis (17, 18). The first rod and the pushro
A foldable stroller (1, 41) is provided with at least one pushrod (2, 3) being pivotable about a first pivot axis (9, 10). The folding mechanism is further provided with a number of rods, comprising a first rod (19, 20) being pivotable about a second pivot axis (17, 18). The first rod and the pushrod are provided with cooperating connecting elements (52, 56) being connectable to each other by pivoting the pushrod about the first pivot axis to an erect position of the pushrod, in which position the connecting elements are lockable to each other by locking means (57). When the locking means are unlocked and the connecting elements are still connected to each other, the connecting means prevent the first rod to pivot about the second pivot axis. After unlocking the locking means as well as after disconnecting the connecting elements by pivoting the pushrod about the first pivot axis towards a collapsed position of the pushrod, the first rod is pivotable about the second axis to achieve the collapsed position of the stroller.
대표청구항▼
1. A stroller being foldable from an erect position to a collapsed position, and vice versa, which stroller comprising at least a collapsible folding mechanism, provided with at least one push rod fitted with a handle, which push rod is pivotable about a first pivot axis of the folding mechanism, wh
1. A stroller being foldable from an erect position to a collapsed position, and vice versa, which stroller comprising at least a collapsible folding mechanism, provided with at least one push rod fitted with a handle, which push rod is pivotable about a first pivot axis of the folding mechanism, which folding mechanism is further provided with a number of rods, wherein a first rod of said number of rods is pivotable about a second pivot axis of the folding mechanism, characterized in that the first rod and the push rod are provided with cooperating connecting elements, which connecting elements being connectable to each other by pivoting the push rod about the first pivot axis to an erect position of the push rod, wherein in the erect position of the push rod, the connecting elements are lockable to each other by locking means, wherein when the locking means are unlocked and the connecting elements are still connected to each other, the connecting means prevent the first rod to pivot about the second pivot axis, whilst after unlocking the locking means as well as after disconnecting the connecting elements by pivoting the push rod about the first pivot axis towards a collapsed position of the push rod, the first rod is pivotable about the second pivot axis to allow the folding mechanism to collapse into the collapsed position of the stroller, characterized in that stroller comprises a support, at least one front wheel connected to the support and at least one rear wheel, which wheels are interconnected by means of the folding mechanism, wherein the folding mechanism comprises a cross shaped linkage system having at least one central joint as well as the first rod and additional rods extending from said central joint, wherein first ends of the first and the additional rods are pivotally connected to the central joint, whilst a second end of one of the additional rods remote from the central joint is connected to said rear wheel and a second end of the first rod remote from the central joint is pivotable about the second pivot axis of the folding mechanism, which central joint being movable with respect to the support over an axis extending between the central joint and the support during erection and collapsion of the stroller,characterized in that the folding mechanism furthermore comprises a central rod connected to the support, which central joint is slidably connected to the rod near an end remote from the support, wherein said axis extends through said rod,characterized in that at an end remote of the support a disc-shaped stop element extending perpendicular to the central rod is connected to the central rod, wherein the pivot axes of the rods are located on a side of the central joint directed towards the disc-shaped stop element, whereby in the erect position, at least the first ends of the rods abut against the disc-shaped stop element. 2. A stroller according to claim 1, characterized in that the first and second pivot axes are provided near an end of a second rod extending substantially parallel to the push rod in the erect position of the stroller. 3. A stroller according to claim 2, characterized in that on both sides of the stroller, such a push rod fitted with said handle, such a first rod as well as such a second rod, extending substantially parallel to the push rod in the erect position of the stroller are located. 4. A stroller according to claim 3, characterized in that a first of said connecting elements comprises a protrusion, whilst a second of said connecting elements comprises a hook, which is positioned over the protrusion, when the connecting elements are connected to each other. 5. A stroller according to claim 1, characterized in that second ends of two rods forming part of the cross-shaped linkage system are each pivotably connected to the push rod fitted with the handle as well as to a rod connected to said at least one front wheel. 6. A stroller according to claim 1, characterized in that the central joint comprises a bushing, which bushing is slidably over the central rod connected to the support. 7. A stroller according to claim 1, characterized in that said axis is an imaginary axis which extends through the support and through the central joint. 8. A stroller according to claim 1, characterized in that with respect to a virtual plane extending through pivot axes at the second ends of the rods, the pivot axes of the first ends of the rods are located on one side of said virtual plane in the collapsed position and on the other side of said virtual plane in the erect position. 9. A stroller according to claim 1, characterized in that the stroller comprises two of said at least one rear wheels and two of said at least one push rods fitted with a handle, wherein the cross shaped linkage system comprises at least four rods, wherein second ends of the four rods are located near said rear wheel and near said push rod fitted with the handle respectively. 10. A stroller according to claim 1, characterized in that in the erect position at least the first ends of the rods abut against the central joint. 11. A stroller according to claim 1, characterized in that in the erect position the central joint abuts against the disc-shaped stop element. 12. A stroller according to claim 1, characterized in that the central joint and the disc-shaped stop element are provided with at least one cooperating set comprising a groove and a notch, the groove being provided on the central joint, whilst the notch being provided on the disc-shaped stop element or vice versa, whereby in the erect position, the notch is located in the groove to prevent rotation of the central joint about the central rod. 13. A stroller being foldable from an erect position to a collapsed position, and vice versa, which stroller comprising at least a collapsible folding mechanism, provided with at least one push rod fitted with a handle, which push rod is pivotable about a first pivot axis of the folding mechanism, which folding mechanism is further provided with a number of rods, wherein a first rod of said number of rods is pivotable about a second pivot axis of the folding mechanism, characterized in that the first rod and the push rod are provided with cooperating connecting elements, which connecting elements being connectable to each other by pivoting the push rod about the first pivot axis to an erect position of the push rod, wherein in the erect position of the push rod, the connecting elements are lockable to each other by locking means, wherein when the locking means are unlocked and the connecting elements are still connected to each other, the connecting means prevent the first rod to pivot about the second pivot axis, whilst after unlocking the locking means as well as after disconnecting the connecting elements by pivoting the push rod about the first pivot axis towards a collapsed position of the push rod, the first rod is pivotable about the second pivot axis to allow the folding mechanism to collapse into the collapsed position of the stroller, characterized in that the locking means comprises a pin being slidably located in the push rod, which pin is movable against spring force from a first locked position wherein the pin is located in a passage of the first rod, to a second unlocked position wherein the pin is removed from the passage to allow the push rod to pivot about the first pivot axis. 14. A stroller according to claim 13, characterized in that the locking means comprises unlocking means, which unlocking means comprises a cable connected with a first end to the pin and with a second end to a movable operating element located on the push rod, preferably on the handle of the push rod. 15. A stroller being foldable from an erect position to a collapsed position, and vice versa, which stroller comprising at least one front wheel and at least one rear wheel, which wheels are interconnected by means of a collapsible folding mechanism, which stroller furthermore comprises at least one push rod fitted with a handle, which is connected to the folding mechanism, the folding mechanism comprises at least a cross shaped linkage system having a central joint and a central rod connected via a support to said at least one front wheel, which cross shaped linkage system also comprises a number of rods each extending from said central joint and with a first end pivotally connected about a pivot axis to the central joint, wherein second ends of rods remote from said central joint are located near said rear wheel and near said push rod fitted with the handle, respectively, which central joint being slidable over the central rod away from and to the support during the erection and collapsion of the stroller, characterized in that at an end remote of the support a disc-shaped stop element extending perpendicular to the central rod is connected to the central rod, wherein the pivot axes of the rods are located on a side of the central joint directed towards the disc-shaped stop element, whereby in the erect position, at least the first ends of the rods abut against the disc-shaped stop element, characterized in that the central joint and the disc-shaped stop element are provided with at least one cooperating set comprising a groove and a notch, the groove being provided on the central joint, whilst the notch being provided on the disc-shaped stop element or vice versa, whereby in the erect position, the notch is located in the groove to prevent rotation of the central joint about the central rod. 16. A stroller-according to claim 15, characterized in that with respect to a virtual plane extending through pivot axes at the second ends of the rods, the pivot axes of the first ends of the rods are located on one side of said virtual plane in the collapsed position and on the other side of said virtual plane in the erect position. 17. A stroller according to claim 15, characterized in that in the erect position the stroller is locked by locking means located at a connection between the push rod fitted with a handle and the folding mechanism. 18. A stroller according to claim 15, characterized in that the central joint comprises a bushing in which the central rod is slidably accommodated. 19. A stroller according to claim 15, characterized in that in the erect position at least the first ends of the rods abut against the central joint. 20. A stroller according to claim 15, characterized in that in the erect position the central joint abuts against the disc-shaped stop element. 21. A stroller according to claim 15, characterized in that the stroller comprises two of said at least one rear wheels and two of said at least one push rods fitted with a handle, wherein the cross shaped linkage system comprises at least four rods, wherein second ends of the four rods are located near said rear wheel and near said push rod fitted with the handle respectively. 22. A stroller according to claim 15, characterized in that second ends of two rods forming part of the cross-shaped linkage system are each pivotably connected to the push rod fitted with the handle as well as to a rod connected to said at least one front wheel.
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이 특허에 인용된 특허 (9)
Dickie, Robert G.; Copeland, Steve A., Collapsible support structure.
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