Variable height trolley and height displaying assembly thereof
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47B-009/00
F16M-011/24
출원번호
US-0154274
(2014-01-14)
등록번호
US-9133976
(2015-09-15)
우선권정보
TW-102144798 A (2013-12-06)
발명자
/ 주소
Lin, Chuan-Kai
Lai, Sheng-Kai
출원인 / 주소
KINPO ELECTRONICS, INC.
대리인 / 주소
Li&Cai Intellectual Property (USA) Office
인용정보
피인용 횟수 :
4인용 특허 :
9
초록▼
A variable height trolley and a height displaying assembly thereof, and the height displaying assembly includes a height indicator unit, a spool and an connecting unit. The height displaying assembly obtains a height of platform from a serial mechanical action between the connecting unit and the pla
A variable height trolley and a height displaying assembly thereof, and the height displaying assembly includes a height indicator unit, a spool and an connecting unit. The height displaying assembly obtains a height of platform from a serial mechanical action between the connecting unit and the platform. The height displaying assembly uses mechanical approach to instantly show the height of the platform.
대표청구항▼
1. A variable height trolley comprising: a platform having a height displaying window;a supporting frame connected to the platform, wherein the supporting frame is reconfigurable to selectively change a height of the platform, the supporting frame includes a roller element that changes a position re
1. A variable height trolley comprising: a platform having a height displaying window;a supporting frame connected to the platform, wherein the supporting frame is reconfigurable to selectively change a height of the platform, the supporting frame includes a roller element that changes a position relative to the height of the platform; anda height displaying assembly disposed on the platform and displaying the height of the platform from the height displaying window, the height displaying assembly including: a height indicator unit movably disposed on the platform and exposable from the height displaying window for displaying the height of the platform from the height displaying window;a spool attached to the platform; anda connecting unit movably coupled to the height indicator unit and having a first end and a second end opposite to the first end, the first end of the connecting unit movably connected to the spool, and the second end of the connecting unit movably connected to the roller element to allow the height indicator unit to move with the connecting unit for displaying the height of the platform relative to a movement of the roller element. 2. The variable height trolley according to claim 1, wherein the height displaying assembly further comprises: a guiding assembly disposed adjacent to the connecting unit to change a direction of connecting unit propagation; anda guiding roller disposed adjacent to the connecting unit to change the direction of connecting unit propagation;wherein the guiding assembly and the guiding roller are disposed between the spool and the roller element. 3. The variable height trolley according to claim 1, wherein the height indicator unit further comprises: a height indicator disposed on a top surface of the platform; anda cursor connected to the connecting unit and movable along with the connecting unit. 4. The variable height trolley according to claim 1, wherein the spool includes a torsion spring to drive the connecting unit. 5. The variable height trolley according to claim 1, wherein the supporting frame further comprises: a base;a rail disposed underneath the platform to accommodate the roller element;a first link disposed between the base and the platform; anda second link disposed between the base and the platform;wherein the roller element is pivotally connected to one end of the first link and movable along the rail. 6. The variable height trolley according to claim 1, wherein the height displaying assembly further comprises: a guiding roller disposed adjacent to the connecting unit to change a direction of connecting unit propagation;wherein the guiding roller is disposed between the spool and the roller element. 7. The variable height trolley according to claim 1, wherein the height indicator unit further comprises: a reel interactive with the spool; andan indicator ribbon winding about the spool and the reel;wherein the spool and the reel are rotatable;wherein when the second end of the connecting unit is pulled by the roller element, the spool is dragged by the first end of the connecting unit such that the spool and the reel rotationally drive the indicator ribbon to move. 8. A height displaying assembly disposed on a variable height trolley, the trolley including a platform and a supporting frame connected to the platform, the platform having a height displaying window, the supporting frame reconfigurable to selectively change a height of the platform, and the supporting frame having a roller element changing a position relative to the height of the platform, the height displaying assembly comprising: a height indicator unit movably disposed on the platform and exposable from the height displaying window for displaying the height of the platform through the height displaying window;a spool disposed on the platform; anda connecting unit movably coupled to the height indicator unit and having a first end and a second end opposite to the first end, the first end movably connected to the spool, and the second end movably connected to the roller element to allow the height indicator unit to move with the connecting unit for displaying the height of the platform relative to a movement of the roller element. 9. The variable height trolley according to claim 8, wherein the height displaying assembly further comprises: a guiding assembly disposed adjacent to the connecting unit to change a direction of connecting unit propagation; anda guiding roller disposed adjacent to the connecting unit to change the direction of connecting unit propagation;wherein the guiding assembly and the guiding roller are disposed between the spool and the roller element. 10. The variable height trolley according to claim 8, wherein the height indicator unit further comprises: a height indicator disposed on a top surface of the platform; anda cursor connected to the connecting unit and movable along with the connecting unit. 11. The variable height trolley according to claim 8, wherein the spool includes a torsion spring to drive the connecting unit. 12. The variable height trolley according to claim 8, the height displaying assembly further comprises: a guiding roller disposed adjacent to the connecting unit to change a direction of connecting unit propagation;wherein the guiding roller is disposed between the spool and the roller element. 13. The variable height trolley according to claim 8, wherein the height indicator unit further comprises: a reel interactive with the spool; andan indicator ribbon wound about the spool and the reel;wherein the spool and the reel are rotatable;wherein when the second end of the connecting unit is pulled by the roller element, the spool is dragged by the first end of the connecting unit such that the spool and the reel rotationally drive the indicator ribbon to move.
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