IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0191839
(2011-07-27)
|
등록번호 |
US-8602442
(2013-12-10)
|
우선권정보 |
CN-2010 2 0291304 U (2010-08-03) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Wonderland Nurserygoods Company Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
28 |
초록
▼
A collapsible stroller comprises a support frame and a linkage assembly. The support frame includes handle arms, front and rear leg tubes, a seat board, and linking segments mounted at two sides of the seat board. The handle arms are pivotally connected with rear ends of the linking segments via fir
A collapsible stroller comprises a support frame and a linkage assembly. The support frame includes handle arms, front and rear leg tubes, a seat board, and linking segments mounted at two sides of the seat board. The handle arms are pivotally connected with rear ends of the linking segments via first hinge structures, the front and rear leg tubes are pivotally connected with the front ends of the linking segments via second hinge structures. Wheels are also mounted at lower ends of the front and rear leg tubes. The linkage assembly includes support brackets and linkage tubes. The support brackets are above the linking segments and connected between the handle arms. The linkage tubes have middle portions pivotally connected with middle portions of the linking segments, and each of the linkage tubes has a first end pivotally connected with one associated support bracket, and a second end detachably locked with one associated rear leg tube.
대표청구항
▼
1. A collapsible stroller comprising: a support frame including handle arms, front leg tubes, rear leg tubes, a seat board, and linking segments disposed at two sides of the seat board, wherein each of the linking segments has a first and a second end, the handle arms are respectively connected with
1. A collapsible stroller comprising: a support frame including handle arms, front leg tubes, rear leg tubes, a seat board, and linking segments disposed at two sides of the seat board, wherein each of the linking segments has a first and a second end, the handle arms are respectively connected with the first ends of the linking segments via first hinge structures, the front leg tubes and the rear leg tubes are respectively connected with the second ends of the linking segments via second hinge structures, and the front and rear leg tubes have lower portions respectively mounted with front and rear wheels; anda linkage assembly including support brackets and linkage tubes, wherein the support brackets are disposed above the linking segments and are connected with the handle arms, each of the linkage tubes has a first tube end pivotally connected with one associated support bracket, and a second tube end operable to detachably lock with one associated rear leg tube, and the linkage tubes are respectively connected with the linking segments via pivot connections located between the first and second tube ends;wherein the second tube ends of the linkage tubes are respectively displaced away from the rear leg tubes and the second hinge structures when the stroller is in a collapsed state, and the second tube ends of the linkage tubes are respectively locked adjacently with the rear leg tubes when the stroller is in an unfolded state. 2. The stroller according to claim 1, wherein the linkage assembly further includes a basket support frame, first link elements, second link elements, and third link elements, each of the linkage tubes having a lower portion pivotally connected with an upper end of one associated second link element via a first pivot connection, each of the second link elements has a lower end pivotally connected with one associated rear leg tube, a front portion of the basket support frame is pivotally connected with the front leg tubes, an intermediate portion of the basket support frame is pivotally connected with intermediate portions of the second link elements between the upper and lower ends of the second link elements, and each of the first link elements has two opposite ends respectively connected pivotally with the intermediate portion of the basket support frame and a side edge of the seat board. 3. The stroller according to claim 2, wherein a rear of the seat board is pivotally connected with second pivot connections provided on the third link elements. 4. The stroller according to claim 2, wherein the support frame further comprises a backrest tube pivotally connected with third pivot connections provided on the third link elements. 5. The stroller according to claim 1, wherein at least one of the first hinge structures includes a first coupling element, a second coupling element, a spring and an end cap, the first coupling element has a first end affixed with one associated handle arm, and a second end pivotally connected with one associated linking segment via the second coupling element, the spring being installed on the second coupling element covered by the end cap. 6. The stroller according to claim 5, wherein the support frame further comprises a canopy wire frame, and the second coupling element has a socket adapted to engage with the canopy wire frame. 7. The stroller according to claim 1, wherein the support frame further comprises a table having two sides respectively provided with coupling extensions that pivotally connect with the linking segments. 8. The stroller according to claim 7, wherein at least one of the second hinge structures includes a front leg coupling element and a rear leg coupling element, the front leg coupling element is affixed with one associated front leg tube, the rear leg coupling element is secured with one associated rear leg tube, and the front leg coupling element, the rear leg coupling element, and one linking segment and one coupling extension associated therewith are pivotally connected together. 9. The stroller according to claim 8, wherein the second hinge structure further comprises a table latch and a spring, the associated coupling extension has a lock opening and a guide slot, the table latch and the spring are assembled between the coupling extension and the front leg coupling element, the spring biasing the table latch to engage with the lock opening or to be guided through the guide slot, wherein the table is locked in position when the table latch engages with the lock opening, and the table is allowed to rotate relative to the linking segments when the table latch is movably guided through the guide slot. 10. The stroller according to claim 2, wherein the basket support frame includes a rear portion that bends upward near the rear wheels to form a support plane, whereby the stroller once collapsed is adapted to stand up supported by the rear portion of the basket support frame and the rear wheels. 11. The stroller according to claim 1, wherein the support frame further comprises a tray affixed with the support brackets. 12. A collapsible stroller comprising: a support frame including handle arms, front leg tubes, rear leg tubes, a seat board, and linking segments disposed at two sides of the seat board, wherein each of the linking segments has a first and a second end, the handle arms are respectively connected with the first ends of the linking segments via first hinge structures, the front leg tubes and the rear leg tubes are respectively connected with the second ends of the linking segments via second hinge structures, and the front and rear leg tubes have lower portions respectively mounted with front and rear wheels;a linkage assembly including support brackets and linkage tubes, wherein the support brackets are disposed above the linking segments and are connected with the handle arms, each of the linkage tubes has a first tube end pivotally connected with one associated support bracket, and a second tube end operable to detachably lock with one associated rear leg tube, the linkage tubes being connected with the linking segments via pivot connections located between the first and second tube ends; anda collapse actuator mechanism and latch mechanisms, wherein the latch mechanisms are respectively mounted adjacent to the second tube ends of the linkage tubes, each of the latch mechanisms includes a spring-biased lock and a holder element, the collapse actuator mechanism includes a button that is arranged near the first tube ends of the linkage tubes and is connected with two cables respectively disposed through the interior of the linkage tubes and extending to the second tube ends of the linkage tubes to connect with the spring-biased locks, and the holder elements are respectively affixed with the rear leg tubes, whereby the button is operable to drive the spring-biased locks to disengage from the holder elements. 13. The stroller according to claim 12, wherein the linkage assembly further includes: a frame portion having side segments pivotally connected with the front leg tubes;a plurality of first link elements, each of the first link elements having two opposite ends respectively connected pivotally with one associated side segment of the frame portion and one associated side edge of the seat board; anda plurality of second link elements, wherein each of the second link elements has an upper end pivotally connected with one associated linkage tube near the second tube end thereof, a lower end pivotally connected with one associated rear leg tube, and an intermediate portion between the upper and lower ends that is pivotally connected with one associated side segment of the frame portion. 14. The stroller according to claim 13, wherein the support frame further includes a backrest tube, and the linkage assembly further includes a plurality of third link elements, the third link elements being respectively connected with a rear portion of the seat board and the backrest tube. 15. The stroller according to claim 13, wherein the frame portion is a basket support frame. 16. A collapsible stroller comprising: a front leg tube and a rear leg tube;a seat board;a handle arm;a linking segment disposed at one side of the seat board, wherein the linking segment includes a first and a second end, the first end of the linking segment being connected with the handle arm via a first hinge structure, the second end of the linking segment being respectively connected with the front and rear leg tubes via a second hinge structure; anda support bracket pivotally connected with the handle arm;a linkage tube having a first and a second tube end, wherein the first tube end is pivotally connected with the support bracket, and the second tube end is operable to detach and attach with the rear leg tube, and the linkage tube is assembled with the linking segment via a pivot connection located between the first and second tube ends;a frame portion having a side segment pivotally connected with the front leg tube;a first link element having two opposite ends respectively connected pivotally with the side segment of the frame portion and a side edge of the seat board; anda second link element having an upper end, a lower end, and an intermediate portion between the upper and lower ends, wherein the upper end is pivotally connected with the linkage tube, the lower end is pivotally connected with the rear leg tube, and the intermediate portion is pivotally connected with the side segment. 17. The stroller according to claim 16, wherein the frame portion is a basket support frame. 18. The stroller according to claim 16, further including a backrest tube, and a third link element respectively connected pivotally with a rear portion of the seat board and backrest tube. 19. The stroller according to claim 16, further including a table having one side provided with a coupling extension that pivotally connect with the linking segment. 20. The stroller according to claim 19 wherein the coupling extension has a lock opening and a guide slot, and the second hinge structure includes: a front and a rear leg coupling element, wherein the front leg coupling element is affixed with the front leg tube, the rear leg coupling element is secured with the rear leg tube, and the front leg coupling element, the rear leg coupling element, the linking segment and the coupling extension are pivotally connected together; anda table latch and a spring assembled between the coupling extension and the front leg coupling element, wherein the spring is operable to bias the table latch to engage with the lock opening or to be guided through the guide slot, the table being locked in position when the table latch engages with the lock opening, and the table being allowed to rotate relative to the linking segment when the table latch is movably guided through the guide slot.
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