IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0541864
(2006-10-02)
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등록번호 |
US-7510168
(2009-03-31)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Jia Hsin Press Cast Industry Co., Ltd.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
6 |
초록
▼
A cable tension device includes a fixing seat, a rotation shaft, a ratchet unit, a movable seat, a safety locking plate, a control member, an engaging board, a push board, a compression spring, and a tension adjustment knob. Thus, when the cable is tightened to a determined extent by rotation of the
A cable tension device includes a fixing seat, a rotation shaft, a ratchet unit, a movable seat, a safety locking plate, a control member, an engaging board, a push board, a compression spring, and a tension adjustment knob. Thus, when the cable is tightened to a determined extent by rotation of the movable seat, the force applied by the cable on the ratchet unit is greater than that applied by the engaging board and the push board on the ratchet unit, so that the engaging board is pushed and deflected by the ratchet unit to pass by the ratchet unit, and the movable seat performs an idle rotation, thereby preventing the cable from being tightened too excessively.
대표청구항
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The invention claimed is: 1. A cable tension device, comprising: a fixing seat; a rotation shaft rotatably mounted on the fixing seat; a ratchet unit secured on the rotation shaft to rotate the rotation shaft; a movable seat rotatably mounted on the rotation shaft; a safety locking plate movably mo
The invention claimed is: 1. A cable tension device, comprising: a fixing seat; a rotation shaft rotatably mounted on the fixing seat; a ratchet unit secured on the rotation shaft to rotate the rotation shaft; a movable seat rotatably mounted on the rotation shaft; a safety locking plate movably mounted on the fixing seat and detachably engaged with the ratchet unit to allow the ratchet unit to rotate forward in one direction only; a control member movably mounted on the movable seat; an engaging board pivotally connected with the control member and detachably engaged with the ratchet unit to drive the ratchet unit to rotate forward in the one direction only; a push board movably mounted on the movable seat and rested on the engaging board to push the engaging board to deflect forward in an inclined angle; a compression spring biased between the movable seat and the push board to push the push board toward the engaging board; a tension adjustment knob adjustably mounted on the movable seat and rested on the compression spring to adjust a tension applied by the compression spring on the push board. 2. The cable tension device in accordance with claim 1, wherein the movable seat has a first end rotatably mounted on the rotation shaft and a second end formed with a threaded adjusting hole, and the tension adjustment knob is a threaded rod screwed into the adjusting hole of the movable seat, so that the tension adjustment knob is rotatable relative to the movable seat to adjust the tension applied by the compression spring on the push board to adjust a force applied by the engaging board and the push board on the ratchet unit. 3. The cable tension device in accordance with claim 2, wherein the compression spring is mounted in the adjusting hole of the movable seat and biased between the tension adjustment knob and the push board. 4. The cable tension device in accordance with claim 1, further comprising an elastic member mounted on the control member and biased between the movable seat and the control member to push the control member toward the engaging board and to push the engaging board toward the ratchet unit. 5. The cable tension device in accordance with claim 1, wherein the movable seat has a mediate portion having two opposite sides each formed with a guide groove, and the engaging board has two opposite sides each formed with a protruding slide edge slidable in the respective guide groove of the movable seat. 6. The cable tension device in accordance with claim 1, wherein the engaging board has a first end formed with an engaging end detachably engaged with the ratchet unit and a second end formed with two upward extending pivot ears pivotally mounted in the control member. 7. The cable tension device in accordance with claim 6, wherein the movable seat has a mediate portion having two opposite sides each formed with a guide slot, the control member has two downward extending slides each movably mounted in the movable seat and each formed with an oblong guide hole, and the cable tension device further comprises a pivot pin extended through the guide slots of the movable seat, the guide holes of the control member and the pivot ears of the engaging board. 8. The cable tension device in accordance with claim 7, wherein the control member is movable forward and backward on the movable seat by guidance of the guide slots of the movable seat and is movable upward and downward on the movable seat by guidance of the guide holes of the control member. 9. The cable tension device in accordance with claim 7, wherein the engaging board is movable with the control member and is pivotable relative to the control member by pivot of the pivot pin. 10. The cable tension device in accordance with claim 1, wherein the movable seat has a mediate portion having two opposite sides each formed with two guide channels, and the push board has two opposite sides each formed with two protruding slide portions each slidable in the respective guide channel of the movable seat. 11. The cable tension device in accordance with claim 1, wherein the control member has a face formed with a through hole, the push board has a first end formed with a push end rested on the first end of the engaging board and a second end formed with an elongated limit slot, and the cable tension device further comprises a limit pin extended through the through hole of the control member and the limit slot of the push board, and a restoring spring mounted on the limit pin and biased between the control member and the push board to push the control member upward and downward. 12. The cable tension device in accordance with claim 11, wherein the push board is movable forward and backward relative to the control member by guidance of the limit pin. 13. The cable tension device in accordance with claim 11, wherein the engaging board is formed with an arcuate recess to receive the limit pin. 14. The cable tension device in accordance with claim 1, wherein the fixing seat has a mediate portion formed with an elongated slideway in which the safety locking plate movable. 15. The cable tension device in accordance with claim 1, wherein the rotation shaft is rotatably mounted on a first end of the fixing seat, and the cable tension device further comprises a push spring biased between a second end of the fixing seat and the safety locking plate to push the safety locking plate toward the ratchet unit. 16. The cable tension device in accordance with claim 1, wherein the control member has a substantially inverted U-shaped cross-sectional profile. 17. The cable tension device in accordance with claim 1, wherein the ratchet unit is located on two ends of the rotation shaft. 18. The cable tension device in accordance with claim 1, wherein when a force applied by the cable on the ratchet unit is greater than that applied by the engaging board and the push board on the ratchet unit, the engaging board is pushed and deflected by the ratchet unit to pass by the ratchet unit, and the movable seat performs an idle rotation. 19. The cable tension device in accordance with claim 1, wherein the elastic member pushes the control member toward the engaging board and pushes the engaging board toward the ratchet unit, so that the engaging board is engaged with the ratchet unit at a normal state, while the compression spring pushes the push board toward the engaging board to push the engaging board to deflect forward in an inclined angle, so that the engaging board is engaged with the ratchet unit at the normal state. 20. The cable tension device in accordance with claim 1, wherein when the control member is movable outwardly relative to the ratchet unit, the engaging board is movable with the control member to disengage the ratchet unit, so that the movable seat is rotatable freely relative to the fixing seat to expose the safety locking plate.
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