IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0027332
(2011-02-15)
|
등록번호 |
US-8162345
(2012-04-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
10 |
초록
▼
A foldable bicycle includes a frame, gears and two wheels. The frame includes a front vertical tubular portion, a front horizontal tubular portion, a hinge, a rear horizontal tubular portion and a seat-supporting tubular portion. A lopsided portion is disposed above the front fork. One piece of the
A foldable bicycle includes a frame, gears and two wheels. The frame includes a front vertical tubular portion, a front horizontal tubular portion, a hinge, a rear horizontal tubular portion and a seat-supporting tubular portion. A lopsided portion is disposed above the front fork. One piece of the hinge is welded to the rear end of the front horizontal tubular portion, and another piece is welded to the front end of the rear horizontal tubular portion. The seat-supporting tubular portion is positioned by a positioning rod. Therefore, the foldable bicycle of the present invention may be folded up into a smallest volume and then may be stored away easily through its positioning unit, hinge and positioning rod. Also, its two small wheels fitted to the rear rack enable the bicycle in a folded condition to be moved around easily.
대표청구항
▼
1. A foldable bicycle, comprising: gears;two wheels; anda frame, comprising:a front vertical tubular portion, including a lopsided portion horizontally disposed above a front fork and a positioning unit disposed on the lopsided portion;a front horizontal tubular portion, including a matching lopside
1. A foldable bicycle, comprising: gears;two wheels; anda frame, comprising:a front vertical tubular portion, including a lopsided portion horizontally disposed above a front fork and a positioning unit disposed on the lopsided portion;a front horizontal tubular portion, including a matching lopsided portion provided on a front end of the front horizontal tubular portion and a matching positioning member corresponding to the positioning unit provided on the matching lopsided portion;a rear horizontal tubular portion, wherein the gears and a rear fork are fitted on the rear horizontal tubular portion, and wherein a rear wheel of the two wheels is fitted on the rear fork, and wherein a hinge is provided between a front end of the rear horizontal tubular portion and a rear end of the front horizontal tubular portion; anda seat-supporting tubular portion, fitted on a seating portion to locate above the rear fork, wherein the seat-supporting tubular portion is positioned by a positioning rod,wherein when folding up the bicycle, first the positioning unit and the matching positioning member are disengaged to release the lopsided portion and the matching lopsided portion and then by pulling the rear horizontal tubular portion upwards the front horizontal tubular portion and the rear horizontal tubular portion may be folded up through the hinge to be positioned side by side with the front vertical tubular portion, so that the seat-supporting tubular portion may be retracted through the release of the positioning rod and the bicycle may be folded into a smallest volume. 2. The foldable bicycle as in claim 1, wherein the hinge has two pieces connected together and is fitted with an open end facing upwards, and wherein one of the two pieces is welded to the rear end of the front horizontal tubular portion and the other piece is welded to the front end of the rear horizontal tubular portion. 3. The foldable bicycle as in claim 2, wherein one or more connective units are provided on the open end of the hinge. 4. The foldable bicycle as in claim 3, wherein the one or more connective units include a catch and a lever and the lever may be used to adjust a degree of tightness, and wherein the catch is disposed on one piece of the hinge and the lever is disposed on the other piece of the hinge. 5. The foldable bicycle as in claim 1, wherein the seating portion is connected with the rear horizontal tubular portion, and wherein a first positioning portion is provided on the seat-supporting tubular portion, and a second positioning portion is provided on a front end of a rack so as to facilitate the positioning of the positioning rod. 6. The foldable bicycle as in claim 5, wherein the rack extends from the second positioning portion and one or more small wheels other than the two wheels are fitted to a rear end of the rack. 7. The foldable bicycle as in claim 5, wherein the rack extends from the second positioning portion and two small wheels other than the two wheels are fitted to a rear end of the rack. 8. The foldable bicycle as in claim 1, wherein a connective unit is provided at a mid-point of the front vertical tubular portion and a matching connective unit is provided on the rear horizontal tubular portion. 9. The foldable bicycle as in claim 8, wherein a grip portion is provided on the connective unit. 10. The foldable bicycle as in claim 1, wherein an extension portion, which extends horizontally, is provided on the lopsided portion and one or more positioning holes are provided in the extension portion, and wherein one or more retractable rods are provided in the matching lopsided portion and a number of the retractable rods is the same as a number of the positioning holes, and wherein the one or more retractable rods are controlled by a control lever. 11. The foldable bicycle as in claim 1, wherein the positioning unit is provided with a spring and is in the form of a bolt or two pins. 12. The foldable bicycle as in claim 1, wherein at least a connective member is provided on a T-shaped handle portion of the bicycle so that the T-shaped handle portion may be folded up. 13. The foldable bicycle as in claim 1, wherein a horizontally oriented female connective unit is provided on one side of the front fork and a vertically oriented male connective unit is provided on the rear fork to engage with the female connective unit after the bicycle has been folded.
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