Screen supporting device and torsion adjusting structure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E04G-003/00
F16M-011/20
E05D-003/06
E05D-007/06
출원번호
US-0925042
(2013-06-24)
등록번호
US-8944396
(2015-02-03)
우선권정보
CN-2013 1 0071750 (2013-03-06)
발명자
/ 주소
Mau, Shu-Hua
Jiang, Yue-Wen
출원인 / 주소
Lite-On Electronics (Guangzhou) Limited
대리인 / 주소
Li & Cai Intellectual Property (USA) Office
인용정보
피인용 횟수 :
5인용 특허 :
13
초록▼
A torsion adjusting structure, which is installed on a shaft and a carrying member pivoted on the shaft, includes a gear, a pair of friction washers, and a linkage assembly. The shaft passes through the gear and the friction washers respectively abutted on two opposite surfaces of the gear. The link
A torsion adjusting structure, which is installed on a shaft and a carrying member pivoted on the shaft, includes a gear, a pair of friction washers, and a linkage assembly. The shaft passes through the gear and the friction washers respectively abutted on two opposite surfaces of the gear. The linkage assembly installed on the carrying member has an engaging portion. The linkage assembly is adjusted between an engaging position and a separating position. When the linkage assembly is at the engaging position, the engaging portion engages with the gear for enabling rotation of the carrying member to rotate the gear to rub the friction washers, thereby providing the carrying member with an additional torsion. When the linkage assembly is at the separating position, the engaging portion separates from the gear for maintaining the relative position between the gear and the friction washers.
대표청구항▼
1. A screen supporting device, comprising: a bottom seat;a frame module having two opposite end portions respectively defined as a bottom end portion and a top end portion, wherein the bottom end portion is pivotally coupled to the bottom seat along a rotation axis;a hinge structure pivotally couple
1. A screen supporting device, comprising: a bottom seat;a frame module having two opposite end portions respectively defined as a bottom end portion and a top end portion, wherein the bottom end portion is pivotally coupled to the bottom seat along a rotation axis;a hinge structure pivotally coupled to the top end portion of the frame module, wherein the hinge structure comprises: a shaft coupled through the top end portion of the frame module, wherein the shaft has a non-circular cross-section, a longitudinal direction of the shaft is defined as a central axis parallel to the rotation axis; anda washer assembly sleeved at the shaft;a carrying member for carrying a screen, the carrying member having a thru hole, wherein the shaft is inserted into the thru hole of the carrying member, and the carrying member is pivotable with respect to the shaft along the central axis; anda torsion adjusting structure, comprising: a gear formed with a circular thru hole along an axial direction thereof, wherein the shaft is inserted into the thru hole of the gear, and the gear is axially rotatable with respect to the shaft along the central axis;a pair of friction washers, each of the friction washers having a non-circular positioning opening conforming with the cross-section of the shaft, wherein the shaft is inserted into the positioning opening, and the friction washers respectively abut against two opposite surfaces of the gear; anda linkage assembly coupled to the carrying member and having an engaging portion, wherein a longitudinal direction of the engaging portion and the axial direction of the gear are parallel to the central axis, a predetermined distance between the engaging portion and the central axis is smaller than a radius of an addendum circle of the gear, and the engaging portion is movable between any two adjacent teeth of the gear,wherein when the linkage assembly horizontally moves along the central axis, the engaging portion is horizontally displaced with respect to the gear and along the central axis, the engaging portion moves along the central axis and parallel to the gear for adjusting the linkage assembly to shift to an engaging position or a separating position in relation to the carrying member;wherein when the engaging portion is engaged between any two adjacent teeth of the gear, the position of the linkage assembly is defined as the engaging position, and the positions of the shaft and the friction washers sleeved at the shaft hold still, the rotation of the carrying member drives the gear to axially rotate along the central axis to rub the friction washers, based on the engaging portion of the linkage assembly has engaged the gear, thereby providing the carrying member with an additional torsion;wherein when the engaging portion is separated from the gear, the position of the linkage assembly is defined as the separating position, the positions of the shaft and the friction washers sleeved at the shaft hold still, the relative position between the gear and the friction washers is maintained when the carrying member is rotating. 2. The screen supporting device as claimed in claim 1, wherein the linkage assembly has a positioning block, a swing bar, a sliding member, and a connecting bar, the positioning block is fixed on the carrying member, the swing bar is pivotally coupled to the positioning block, the sliding member is slidably configured to the carrying member, two opposite ends of the connecting bar are respectively and pivotally coupled to the swing bar and the sliding member, and the sliding member is formed with the engaging portion, when the swing bar is pushed, the connecting bar is driven and the sliding member slides for adjusting the linkage assembly to shift to the engaging position or the separating position. 3. The screen supporting device as claimed in claim 2, wherein the linkage member has a returning member abutting against the sliding member and the carrying member, and when the sliding member is sliding with respect to the carrying member, the returning member is deformed for storing a returning force. 4. The screen supporting device as claimed in claim 2, wherein the sliding member has a sliding bar, a connecting block, and a sliding block, the sliding bar is slidably configured to the carrying member, the connecting block and the sliding block are fixed on the sliding bar, and the connecting bar is pivotally coupled to the connecting block, the engaging portion is integrally formed on the sliding block. 5. The screen supporting device as claimed in claim 4, wherein the linkage assembly has a compression spring and a restricting pin, two opposite ends of the compression spring respectively abut against the carrying member and the sliding block, the restricting pin passes through the carrying member and the compression spring, and the restricting pin is fixed on the sliding block. 6. The screen supporting device as claimed in claim 1, wherein the top end portion of the frame module has a non-circular positioning opening conforming with the cross-section of the shaft, and the shaft is coupled through the positioning opening of the top end portion of the frame module for enabling the shaft to be supported by the frame module. 7. The screen supporting device as claimed in claim 1, wherein the gear has a plurality protrusions respectively formed on the opposite surfaces thereof, and the protrusions respectively abut against the friction washers. 8. The screen supporting device as claimed in claim 2, wherein the sliding member slides substantially parallel to the central axis. 9. The screen supporting device as claimed in claim 2, wherein any two of the positioning block, the swing bar, the sliding member, and the connecting bar have a hinge axis substantially perpendicular to the central axis. 10. A hinge structure applied for being installed on a shaft having a non-circular cross-section and a carrying member, wherein a longitudinal direction of the shaft is defined as a central axis, the carrying member for carrying a screen is pivotable with respect to the shaft along the central axis, the hinge structure comprising: a gear formed with a circular thru hole along an axial direction thereof, wherein the shaft is inserted into the thru hole of the gear, and the gear is axially rotatable with respect to the shaft along the central axis;a pair of friction washers, each of the friction washers having a non-circular positioning opening conforming with the cross-section of the shaft, wherein the shaft is inserted into the positioning opening of each friction washer, and the friction washers respectively abut against two opposite surfaces of the gear; anda linkage assembly coupled to the carrying member and having an engaging portion, wherein a longitudinal direction of the engaging portion and the axial direction of the gear are parallel to the central axis, a predetermined distance between the engaging portion and the central axis is smaller than a radius of an addendum circle of the gear, and the engaging portion is movable between any two adjacent teeth of the gear,wherein when the linkage assembly horizontally moves along the central axis, the engaging portion is horizontally displaced with respect to the gear and along the central axis, the engaging portion moves along the central axis and parallel to the gear for adjusting the linkage assembly to shift to an engaging position or a separating position in relation to the carrying member;wherein when the engaging portion is engaged between any two adjacent teeth of the gear, the position of the linkage assembly is defined as the engaging position, and the positions of the shaft and the friction washers sleeved at the shaft hold still, the rotation of the carrying member drives the gear to axially rotate along the central axis to rub the friction washers, based on the engaging portion of the linkage assembly has engaged the gear, thereby providing the carrying member with an additional torsion;wherein when the engaging portion is separated from the gear, the position of the linkage assembly is defined as the separating position, the positions of the shaft and the friction washers sleeved at the shaft hold still, the relative position between the gear and the friction washers is maintained when the carrying member is rotating.
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