초록 ▼

A foldable stroller having a frame for supporting a child carrier, wherein the frame includes front and rear wheels, a push/pull handle with a right and left push/pull bar, right and left front and rear wheel bars, having discs, which support the front and rear wheels, respectively, a right and left

A foldable stroller having a frame for supporting a child carrier, wherein the frame includes front and rear wheels, a push/pull handle with a right and left push/pull bar, right and left front and rear wheel bars, having discs, which support the front and rear wheels, respectively, a right and left carrier supporting pin, a right coupling member associated with the right front wheel bar and a left coupling member associated with the left front wheel bar. The right push/pull bar and the right supporting pin are fixed so that the right front and rear wheel bar discs can pivot about an axis that runs transverse to the front and rear wheel bars, the push/pull bars and the support pins. The left push/pull bar and the left supporting pin are fixed so that the left front and rear wheel bar discs pivot relative one another about the pivot axis.

대표청구항 ▼

The invention claimed is: 1. A buggy comprising a frame for accommodating a carrier for a child, wherein the frame comprises: front and rear wheels; a push and pull handle with a right-hand push/pull bar and a left-hand push/pull bar; a right-hand and a left-hand front wheel bar which supports said

The invention claimed is: 1. A buggy comprising a frame for accommodating a carrier for a child, wherein the frame comprises: front and rear wheels; a push and pull handle with a right-hand push/pull bar and a left-hand push/pull bar; a right-hand and a left-hand front wheel bar which supports said front wheels; a right-hand and a left-hand rear wheel bar which supports said rear wheels; a right-hand and a left-hand supporting pin for supporting the carrier; a right-hand coupling member, the right-hand coupling member comprising a right-hand front wheel bar disc, a right-hand rear wheel bar disc, a right-hand push/pull bar disc, and a right-hand supporting pin disc, wherein the right-hand front wheel bar is fixed to the right-hand coupling member via the right-hand front wheel bar disc, wherein the right-hand rear wheel bar is fixed to the right-hand coupling member via a right-hand rear wheel bar disc, wherein the right-hand push/pull bar is fixed to the right-hand coupling member via the right-hand push/pull bar disc, wherein the right-hand supporting pin is fixed to the right-hand coupling member via the right-hand supporting pin disc, and wherein the right-hand front wheel bar disc and the right-hand rear wheel bar disc are fixed in such a way that the right-hand front wheel bar disc and the right-hand rear wheel bar disc are turnable relative to one another about a pivot axis that runs essentially transversely to the front wheel bars, the rear wheel bars, the push/pull bars and the supporting pins; a left-hand coupling member, the left-hand coupling member comprising a left-hand front wheel bar disc, a left-hand rear wheel bar disc, a left-hand push/pull bar disc, and a left-hand supporting pin disc, wherein the left-hand front wheel bar is fixed to the left-hand coupling member via the left-hand front wheel bar disc, wherein the left-hand rear wheel bar is fixed to the left-hand coupling member via a left-hand rear wheel bar disc, wherein the left-hand push/pull bar is fixed to the left-hand coupling member via the left-hand push/pull bar disc, wherein the left-hand supporting pin is fixed to the left-hand coupling member via the left-hand supporting pin disc, and wherein the left-hand front wheel bar disc and the left-hand rear wheel bar disc are fixed in such a way that the left-hand front wheel bar disc and the left-hand rear wheel bar disc are turnable relative to one another about the pivot axis; wherein the right-hand and left-hand coupling member are each lockable in one or more positions in which the right-hand front wheel bar and the right-hand rear wheel bar and the left-hand front wheel bar and the left-hand rear wheel bar, respectively, are fixed relative to one another, and are unlockable from the one or more positions, wherein each respective coupling member has a locking mechanism provided on the frame, wherein each locking mechanism comprises: a projection, provided on each respective supporting pin, wherein the projection is movable between a protruding position and a retracted position, when viewed from a direction parallel in alignment with the pivot axis; a pin slider, provided in each respective supporting pin, the pin slider being slidable in the longitudinal direction of each respective supporting pin, the pin slider having a first end facing the projection and a second end facing the pivot axis; a tensioning system equipped to pretension the pin slider and the projection such that, while the first end of the pin slider is in contact with the projection, the projection is subjected to a pretensioning force driving the projection in the direction of the protruding position; wherein each locking mechanism is equipped to push the pin slider, against the pretensioning force, towards the pivot axis when the projection is pushed, against the pretensioning force, from the protruding position to the retracted position, such that the locking mechanism moves from a release position corresponding to the protruding position of the projection, in which the respective rear wheel bar disc and the respective front wheel bar disc are able to turn relative to one another, into a locked position corresponding to the retracted position of the projection, in which the respective rear wheel bar disc and the respective front wheel bar disc are not able to turn relative to one another. 2. The buggy according to claim 1, wherein the projection includes a tapered portion, wherein each supporting pin respectively includes a free end, wherein when the projection is in the protruding position the tapered portion is located outside each supporting pin and the tapered portion tapers in the direction of the free end. 3. The buggy according to claim 1, wherein the projection has a first end that is located outside each supporting pin in the protruding position and a second end where a tilt pin is provided, wherein the projection can be tilted with respect to the tilt pin, and wherein the side of the projection extending between the first and second end and facing away from the free end of each supporting pin is convex. 4. The buggy according to claim 1, wherein the first end of the pin slider in contact with the projection is chamfered wherein, viewed from the low side of the chamfering towards the high side of the chamfering, the chamfering runs in the direction of retraction of the projection. 5. The buggy according to claim 1, wherein each locking mechanism further comprises a shaft slider that is provided in each respective coupling member, wherein the shaft slider can be slid in the longitudinal direction of the pivot axis, wherein the second end of the pin slider makes contact with the shaft slider under the influence of the tensioning system and wherein each locking mechanism is respectively equipped to slide the shaft slider via the pin slider from a first position to a second position as the projection transitioned from the protruding position to the retracted position, wherein the first position corresponds to the release position of each locking mechanism, and wherein the second position corresponds to the locked position of each locking mechanism. 6. The buggy according to claim 5, wherein the second end of the pin slider includes a contact surface that tapers in the direction of the pivot axis, and wherein the contact surface faces and contacts the shaft slider. 7. The buggy according to claim 5, wherein the shaft slider has an annular body, wherein the pivot axis extends through the annular body of the shaft slider. 8. The buggy according to claim 7, wherein the annular body of the shaft slider has a surface that is rotationally symmetrically tapering with respect to the pivot axis at the end facing the pin slider. 9. The buggy according to claim 7, wherein the annular body has at least one locking pin at the end of the annular body of the shaft slider facing away from the pin slider, wherein the at least one locking pin, in the locked position of each locking mechanism, protrudes into at least one locking recess in each respective rear wheel bar disc or each respective front wheel bar disc, and wherein the at least one locking pin, in the release position, is retracted from the at least one locking recess. 10. The buggy according to claim 9, wherein the at least one locking pin comprises a plurality of locking pins arranged along the periphery of the annular body of the shaft slider facing away from the pin slider, wherein the at least one locking recess comprises a plurality of locking recesses corresponding to the plurality of locking pins. 11. The buggy according to claim 10, wherein said respective front wheel bar disc or said respective rear wheel bar disc has a locking pin guide per locking pin through which in each case one locking pin can be slid back and forth. 12. The buggy according to claim 5, wherein the tensioning system comprises a pretensioned spring which, at one end, engages on the shaft slider and, at the other end, engages the respective rear wheel bar disc or the respective front wheel bar disc. 13. The buggy according to claim 6, wherein the tensioning system comprises a pretensioned spring which, at one end, engages on the shaft slider and, at the other end, engages the respective rear wheel bar disc or the respective front wheel bar disc. 14. The buggy according to claim 7, wherein the tensioning system comprises a pretensioned spring which, at one end, engages on the shaft slider and, at the other end, engages the respective rear wheel bar disc or the respective front wheel bar disc. 15. The buggy according to claim 1, wherein the carrier is provided on either side with a support tube in which the supporting pins can be accommodated while the projections are driven by the support tubes from the protruding position into the retracted position. 16. The buggy according to claim 15, wherein each supporting pin respectively includes a free end, and wherein the projection is provided at the free end of each supporting pin.