IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0296342
(2007-05-22)
|
등록번호 |
US-8220348
(2012-07-17)
|
우선권정보 |
FR-06 51935 (2006-05-29) |
국제출원번호 |
PCT/FR2007/051311
(2007-05-22)
|
§371/§102 date |
20081010
(20081010)
|
국제공개번호 |
WO2007/138216
(2007-12-06)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
6 |
초록
▼
An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined
An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.
대표청구항
▼
1. A travel compensation actuator for a clutch of a motor vehicle, comprising: a casing;a driving mechanism (16);a motor (12) mounted to the casing for driving the driving mechanism along an outward and a return path; andtravel compensating means (14) for compensating travel of the driving mechanism
1. A travel compensation actuator for a clutch of a motor vehicle, comprising: a casing;a driving mechanism (16);a motor (12) mounted to the casing for driving the driving mechanism along an outward and a return path; andtravel compensating means (14) for compensating travel of the driving mechanism and connecting the motor (12) to the driving mechanism (16);the travel compensating means (14) mounted to the casing (10) and displaceable inside the casing by the motor along an adjustment path (P0-P2) and along a drive path (P3-P4) of the driving mechanism (16);the travel compensating means comprising a slide element (18) displaceable within the casing (10) and driven by the motor (12) along the adjustment and drive paths, means (22, 24) for adjusting the position of a drive stop of the driving mechanism and two combined means (34a, 34b) for unidirectional travel of the drive stop;the position adjustment means carried by the slide element (18) and including a screw (22) defining the drive stop and a nut (24) screwed onto the screw (22) both mounted inside the casing (10);the two combined unidirectional travel means (34a, 34b) are mounted inside the casing (10) to cooperate with the position adjustment means (22, 24) in order to displace the position adjustment means (22, 24) by one step in one direction or the other when the travel compensating means (14) are displaced by the motor in one direction or the other from an intermediary position (P1) of the adjustment path;the position adjustment means (22, 24) mounted to the slide member (18) such that the screw (22) being linearly displaceable and non-rotatable in the slide member (18);the nut (24) being rotatable on the slide member and comprising an external teeth (30) cooperating with the two combined unidirectional travel means (34a, 34b) when the slide member (18) travels along the adjustment path. 2. The travel compensation actuator in accordance with claim 1, wherein the screw (22) is tubular in shape and a distal end of the driving mechanism (16) is engaged in an interior of the screw (22). 3. The travel compensation actuator in accordance with claim 2, wherein the distal end of the driving mechanism (16) is in the form of a head-shaped section that comes to rest against a rear wall of the screw (22). 4. Actuator The travel compensation actuator in accordance with claim 1, wherein, the slide member is displaced in the direction of the return of the clutch. 5. The travel compensation actuator in accordance with claim 1, wherein the adjustment and the drive paths of the travel compensating means are contiguous. 6. The travel compensation actuator in accordance with claim 1, wherein the travel compensation actuator further comprises at least one compensation spring (52) acting through the intermediary of a mobile element (54) on a cam (56) carried by the travel compensating means (14) and exerting a force on the travel compensating means in the direction corresponding to the opening of the clutch. 7. A travel compensation actuator for a clutch of a motor vehicle, comprising: a casing;a driving mechanism (16);a motor (12) mounted to the casing for driving the driving mechanism along an outward and a return path; andtravel compensating means 14 for compensating travel of the driving mechanism and connecting the motor (12) to the driving mechanism (16);the travel compensating means (14) mounted to the casing (10) and displaceable inside the casing by the motor along an adjustment path (P0-P2) and along a drive path (P3-P4) of the driving mechanism (16);the travel compensating means comprising a slide element (18) displaceable within the casing (10) and driven by the motor (12) along the adjustment and drive paths, means (22, 24) for adjusting the position of a drive stop of the driving mechanism and two combined means (34a, 34b) for unidirectional travel of the drive stop;the position adjustment means including a screw (22) defining the drive stop and a nut (24) screwed onto the screw (22) both mounted inside the casing (10);the two combined unidirectional travel means (34a, 34b) are mounted inside the casing (10) to cooperate with the position adjustment means (22, 24) in order to displace the position adjustment means (22, 24) by one step in one direction or the other when the travel compensating means (14) are displaced by the motor in one direction or the other from an intermediary position (P1) of the adjustment path;the position adjustment means (22, 24) mounted to the slide member (18) such that the screw (22) being linearly displaceable and non-rotatable in the slide member (18);the nut (24) being rotatable on the slide member and comprising an external teeth (30) cooperating with the two combined unidirectional travel means (34a, 34b) when the slide member (18) travels along the adjustment path;the combined unidirectional travel means comprising two unidirectional drive rings (34a, 34b) mounted in a rotational manner around the slide member (18) and having an internal teeth (32) intended to work in cooperating with the external teeth (30) of the nut (24), the two unidirectional drive rings engaging elastic means of return (40)3 inducing the two unidirectional drive rings to rotate in opposite directions until the two unidirectional drive rings come to rest against stops formed on the slide member (18). 8. The travel compensation actuator in accordance with claim 7, wherein each of the internal teeth of the unidirectional drive rings (34a, 34b) is in the form of an open V and comprises a first an oblique part (46) that is oblique in relation to an axis of rotation of the ring and a rectilinear part (48) that is parallel to the axis of the ring, with the oblique parts (46) of the internal teeth of one of the unidirectional drive rings being parallel to the oblique parts (46) of the internal teeth of the other unidirectional drive ring and stretching in opposite directions. 9. The travel compensation actuator in accordance with claim 8, wherein the external teeth of the nut (24) are in the shape of a diamond and have two parallel faces (42) that are parallel to an axis of rotation of the nut and two oblique faces (44) that are oblique in relation to the axis of the nut, the oblique faces of the external teeth of the nut (24) being parallel to the oblique parts (46) of the internal teeth of the unidirectional drive rings (34a, 34b). 10. The travel compensation actuator in accordance with claim 9, wherein the oblique faces (44, 46) of the teeth of the nut and the rings are parallel to the thread of the screw (22) and orientated in the same direction. 11. The travel compensation actuator in accordance with claim 7, wherein the unidirectional drive rings (34a, 34b) comprise longitudinal legs (50) that cooperate with the casing (10) of the actuator to limit the longitudinal and angular displacement of the unidirectional drive rings.
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