IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0896928
(2007-09-06)
|
등록번호 |
US-7731137
(2010-06-29)
|
우선권정보 |
TW-96116756 A(2007-05-11) |
발명자
/ 주소 |
- Lee, Yung-Ta
- Lin, Chia-Han
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
5 |
초록
▼
A vertically adjustable supporting structure that comprises a link member whose bottom and top portions disposed with a lower end and a top end; a lower hinge having at least one shaft pivoted on the lower end of the link member so as to render the link member rotatably pivoted between the two lower
A vertically adjustable supporting structure that comprises a link member whose bottom and top portions disposed with a lower end and a top end; a lower hinge having at least one shaft pivoted on the lower end of the link member so as to render the link member rotatably pivoted between the two lower frames of the lower hinge; an upper hinge having at least one shaft pivotally connected on the upper end of the link member so as to render the link member rotatably pivoted between the two upper frames of the upper hinge; at least a coupling assembly having one lower axle wheel and one upper axle wheel disposed between the lower end and the upper end of one side of the link member and between the lower frame and upper frame, respectively, and pivoted on the lower hinge and upper hinge, respectively, with a flexible cord engagingly secured between the lower and upper axle wheels; and at least an idle wheel pivoted on one side of the link member and between the lower and upper axle wheels to be interlacing engaged with the flexible cord and to form a coupling movement, such that the coupling assembly transforms the circular movement of the link member into a rotation for compensating displacement difference of two upper frames without affecting their original angle.
대표청구항
▼
What is claimed is: 1. A vertically adjustable supporting structure comprising: a link member whose bottom and top portions are disposed with a lower end and a top end; a lower hinge having a respective fixed shaft pivoted on the lower end of the link member so as to render the link member rotatabl
What is claimed is: 1. A vertically adjustable supporting structure comprising: a link member whose bottom and top portions are disposed with a lower end and a top end; a lower hinge having a respective fixed shaft pivoted on the lower end of the link member so as to render the link member rotatably pivoted between two lower frames of the lower hinge; an upper hinge having at least one respective movable shaft pivotally connected on the upper end of the link member so as to render the link member rotatably pivoted between two upper frames of the upper hinge; at least a coupling assembly having one lower axle wheel and one upper axle wheel disposed between the lower end and the upper end of one side of the link member and between the lower frame and the upper frame, respectively, and pivoted on the lower hinge and upper hinge, respectively, with a flexible cord engagingly secured between the lower and upper axle wheels; and at least an idle wheel pivoted on one side of the link member and between the lower and upper axle wheels to be interlacingly engaged with the flexible cord and to form a coupling movement, such that the coupling assembly transforms a circular movement of the link member into a rotation for compensating displacement difference of the two upper frames without affecting their original angle. 2. The vertically adjustable supporting structure as claimed in claim 1, wherein the top and lower ends of the link member extend protrudingly to form a pair of upper lugs and a pair of lower lugs, respectively, through each of which an axial hole is formed for the pivotal connection of the upper and lower hinges. 3. The vertically adjustable supporting structure as claimed in claim 2, wherein the lower hinge is rotatably disposed into two rotating bases on the pair of lower lug of the lower end of the link member, respectively, by insertingly fitting the respective fixed shaft with, in order of, the axial hole of the lower lug, a first washer, a second washer, a support ring of the lower frame, at least a flexible part, and finally an end cap connected with the fixed shaft. 4. The vertically adjustable supporting structure as claimed in claim 3, wherein between the lower lug and the first washer is disposed a frictional disc, whose circumference extends inwardly to form a fastening tenon, which is fastened and positioned onto a fastening slot formed on the circumference of the axial hole of the lower lug. 5. The vertically adjustable supporting structure as claimed in claim 3, wherein the fixed shaft is a single part sheathingly inserted into a torsional spring between the two lower lugs and two ends of the torsional spring extend, respectively, to abut against a notch groove formed on the lower end of the link member and an accommodating groove. 6. The vertically adjustable supporting structure as claimed in claim 3, wherein the second washer is securingly fastened on an inner side of a frame ring with at least an engaging tenon engagingly fitted into a corresponding connection hole formed on the frame ring for fastening. 7. The vertically adjustable supporting structure as claimed in claim 2, wherein the upper hinge is rotatably disposed into two rotating bases on the pair of the upper lugs on the upper end of the link member by insertingly fitting the at least one respective movable shaft with, in order of, a seat ring of the upper frame, a third washer, a fourth washer, the axial hole of the upper lug, a fifth washer, at least a flexible part, and finally an end cap connected with the movable shaft. 8. The vertically adjustable supporting structure as claimed in claim 7, wherein between the seat ring of the upper frame and the third washer is disposed with a frictional disc, whose circumference extends outwardly to form a fastening tenon engagingly fastened and positioned onto a fastening slot formed on the circumference of the seat ring. 9. The vertically adjustable supporting structure as claimed in claim 7, wherein an arc-shape angle restricting groove is formed on an inner side of the seat ring of the upper frames to continuously accommodate an engaging tenon protrudingly formed on the circumference of the third washer. 10. The vertically adjustable supporting structure as claimed in claim 7, wherein between the upper lug and the fourth washer as well as between the fifth washer is disposed a frictional disc, respectively, whose circumference extends inwardly to form a fastening tenon engagingly fastened and positioned onto a fastening slot formed on the circumference of the axle hole of the upper lug. 11. The vertically adjustable supporting structure as claimed in claim 7, wherein a retaining device provided on the upper hinge, is formed by insertingly fitting, in an order of, a retaining ring and an engaging ring securingly disposed inside the seat ring between the movable shaft and the upper frames; the retaining ring is oppositely disposed with two protruding ring tenons on an inner surface thereof and the circumference of the engaging ring is formed to have two oppositely indented, arc-shape engaging slots, such that when the two upper frames rotate along with a top rack, the ring tenons of the retaining ring run across a stop edge of one engaging slot and engages onto the other engaging slot to render the upper frames parallel to the two lower frames. 12. The vertically adjustable supporting structure as claimed in claim 1, wherein, the flexible cord comprises two connection cords with a positioning block on both ends, respectively; two pin holes formed at both sides of a central wheel groove of the two axle wheels, respectively, are separated at a predetermined distance and correspond to each other, such that the respective pin holes of the lower and upper axle wheels are engagingly fitted by the positioning blocks on the both ends of the two connection cords for positioning. 13. The vertically adjustable supporting structure as claimed in claim 1, wherein a cord groove is formed at the center of the idle wheel to be interlacingly engaged with the flexible cord.
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