초록 ▼

A stroller utilizes a handle folding assembly and a front frame folding assembly for a compact, easy storing folded size. An axle of the handle folding assembly rotates when a wrench is operated with single hand and two first sliders are brought to approach axially to each other and detach from two

A stroller utilizes a handle folding assembly and a front frame folding assembly for a compact, easy storing folded size. An axle of the handle folding assembly rotates when a wrench is operated with single hand and two first sliders are brought to approach axially to each other and detach from two fastening elements, making the handle rotatable and folding to a rear frame. A button of the front frame folding assembly is pressed with single hand (or a seat is detached from a seat bracket) to detach a second slider of the front frame from a roller to make the front frame rotatable and folding to the rear frame. The position pins accompanied with a plurality of position holes enable the stroller an adjustable height of a seat and the handle.

대표청구항 ▼

What is claimed is: 1. A stroller, comprising: a handle comprising a handle sleeve; a front frame comprising a seat bracket for supporting a seat and a front sleeve connected to the seat bracket; a rear frame comprising a rear sleeve; and a folding assembly, comprising: a roller having a first posi

What is claimed is: 1. A stroller, comprising: a handle comprising a handle sleeve; a front frame comprising a seat bracket for supporting a seat and a front sleeve connected to the seat bracket; a rear frame comprising a rear sleeve; and a folding assembly, comprising: a roller having a first position opening and at least a first slider movably mounted on the roller; and a fastening element fixed inside the handle sleeve; wherein the frame comprises a second slider movable within and retractable into the seat bracket, and roller passes through the handle sleeve, the front sleeve, and the rear sleeve for pivotally connecting to the handle, the front frame and the rear frame with each other, which allows the handle and the front frame for rotating relative to the rear frame around the roller respectively or being locked by engaging the first slider with the fastening elements or the second slider with the first position opening respectively. 2. The stroller of claim 1 wherein the first slider configured inside the roller and capable of sliding along an axis of the roller between a first position where the first slider protrudes from the roller and engages with the fastening element and a second position where the first slider retracts within the roller and disengages from the fastening element. 3. The stroller of claim 2 wherein the roller further comprises an inner guide on the inner wall of the roller, the fastening element is ring-shaped and comprises a fastening guide at inner wall, and the first slider comprises a teeth to move along the inner guide and operatively engage with the fastening guide of the fastening element when the first slider is in the first position. 4. The stroller of claim 2 wherein the folding assembly further comprises an axle configured at the axis of the roller and connected to the first slider for the first slider to slide on. 5. The stroller of claim 4 wherein the first slider further comprises a spiral groove, the axle further comprises a plurality of pins, each extending in the groove of the first slider, the plurality of pins guiding the first slider to move when the axle rotates. 6. The stroller of claim 2 wherein the folding assembly further comprises: a cover secured to the handle sleeve and comprising a ditch; an axle configured at the axis of the roller and connected to the first slider for bringing the plurality of first sliders to slide; and a safety lock secured to one end of the axle, the lock comprising a safety pin for engaging with the ditch to prevent the axle from rotating. 7. The stroller of claim 1 wherein the roller further comprises a second position opening, the second slider is configured inside the front sleeve, the front frame locked in a folded position when the second slider engages with the second position opening. 8. The stroller of claim 7 wherein the folding assembly further comprises a button operatively mounted on the seat bracket and connected to the second slider for bringing the second slider to detach from one of the position openings. 9. The stroller of claim 1, further comprising a seat comprising a supporting device, the seat bracket of the front frame having a plurality of position holes and an opening, and the second slider moveably protruding from the opening, the supporting device capable of pushing the second slider to engage with the first position opening when the supporting device of the seat is configured in the seat bracket. 10. The stroller of claim 9 wherein the supporting device comprises: a position pin for detachably engaging with one of the plurality of position holes; and a pressing device connecting to the position pin for bringing the position pin to detach from one of the plurality of position holes. 11. The stroller of claim 1 wherein the rear sleeve comprises a rear guide and the roller comprises a guider on the outer wall of the roller, the roller joining the rear sleeve by engaging the guider with the rear guide. 12. The stroller of claim 1 wherein the folding assembly further comprises an elastic element, the first slider connecting with one end of the elastic member. 13. The stroller of claim 1 wherein the handle comprises: a lower handle comprising the handle sleeve and a plurality of position holes; and an upper handle, comprising: a position pin for detachable engaging with one of the plurality of position holes; and a linkage linking to the position pin for bringing the position pin to detach from one of the plurality of position holes. 14. A stroller frame, comprising: a front frame; a rear frame; and a handle, comprising: a roller secured to the rear frame, the handle and the front frame pivotally connecting to the rear frame via the roller respectively and capable of rotating relative to the rear frame around the roller; a first locking device mounted on the roller and movable relative to the roller between a first position where the first locking device is engaged with the handle and a second position where the first locking device is disengaged from the handle; and a second locking device mounted on the front frame and movable relative to the front frame between an engaged position where the second locking device is locked with the roller and a disengaged position where the second locking device is removed from the roller. 15. The stroller frame of claim 14, wherein the first locking device comprises a plurality of fastening elements respectively fixed inside the handle and a plurality of first sliders configured inside the roller and capable of sliding along the axis of the roller, the plurality of first sliders moving to the first position for engaging respectively with the plurality of fastening elements for locking the handle and the rear frame or moving to the second position for disengaging respectively from the plurality of fastening elements for allowing the handle capable of rotating relative to the rear frame around the roller. 16. The stroller frame of claim 15, wherein the roller further comprises: an elastic element having two ends connecting with the plurality of first sliders respectively; and an axle configured at the axis of the roller for bringing the plurality of first sliders to slide. 17. The stroller frame of claim 16 wherein each of the plurality of first sliders further comprises a groove, the axle further comprises a plurality of pins, each extending in the groove of the first slider, the plurality of pins guiding the plurality of first sliders to approach to each other by means of the groove when the axle rotates. 18. The stroller frame of claim 14, wherein the roller comprises a plurality of position openings and the second locking device is in the engaged position when locked with one of the plurality of position openings of the roller. 19. The stroller frame of claim 18 wherein the plurality of position openings comprises a first position opening and a second position opening, the front frame locked in an extending position when the second locking device engages with the first position opening and in a folded position when the second locking device engages with the second position opening.