Apparatuses for changing gear in marine propulsion systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B63H-020/20
B63H-023/08
F16D-023/12
출원번호
US-0077754
(2013-11-12)
등록번호
US-9174715
(2015-11-03)
발명자
/ 주소
Hanes, Theodore J.
Syson, David T.
출원인 / 주소
Brunswick Corporation
대리인 / 주소
Andrus Intellectual Property Law, LLP
인용정보
피인용 횟수 :
1인용 특허 :
20
초록▼
An apparatus is for a changing gear in a marine propulsion system. A cam rotates about a first axis with a shift shaft. The cam has a body and an arm that radially extends from the body with respect to the first axis. A cam follower moves parallel to a second axis that is perpendicular to the first
An apparatus is for a changing gear in a marine propulsion system. A cam rotates about a first axis with a shift shaft. The cam has a body and an arm that radially extends from the body with respect to the first axis. A cam follower moves parallel to a second axis that is perpendicular to the first axis to cause movement of a clutch, thereby enacting a gear change. The cam follower defines a pocket that is elongated with respect to the second axis and a recess that extends from the pocket along a third axis that is perpendicular to the first and second axes. The cam is disposed in the pocket and the arm extends into the recess. During a constant rotation of the shift shaft in a first direction about the first axis, the cam follower moves with respect to the second axis to enact the gear change and also dwells with respect to the second axis.
대표청구항▼
1. An apparatus for changing gear in a marine propulsion system, the apparatus comprising: a shift shaft that rotates about a first axis;a cam that rotates about the first axis with the shift shaft, the cam having a body and an arm that radially extends from the body with respect to the first axis;a
1. An apparatus for changing gear in a marine propulsion system, the apparatus comprising: a shift shaft that rotates about a first axis;a cam that rotates about the first axis with the shift shaft, the cam having a body and an arm that radially extends from the body with respect to the first axis;an output shaft that rotates about a second axis that is perpendicular to the first axis;a clutch that moves in a direction parallel to the second axis to enact a gear change in the marine propulsion system; anda cam follower that moves parallel to the second axis to cause movement of the clutch, thereby enacting the gear change, the cam follower defining a pocket that is elongated with respect to the second axis and a recess that extends from the pocket along a third axis that is perpendicular to the first and second axes, wherein the recess is at least partially defined by first and second dwell surfaces;wherein the cam is disposed in the pocket and the arm extends into the recess; andwherein during a constant rotation of the shift shaft in a first direction about the first axis, the cam follower moves with respect to the second axis to enact the gear change and also dwells with respect to the second axis as the arm rotates past the first and second dwell surfaces. 2. The apparatus according to claim 1, wherein during said constant rotation of the shift shaft in the first direction, the cam follower first remains stationary with respect to the second axis as the arm rotates past the first dwell surface, then is moved along the second axis to cause movement of the clutch, and thereafter again remains stationary with respect to the second axis as the arm rotates past the second dwell surface. 3. The apparatus according to claim 2, wherein during a constant rotation of the shift shaft in an opposite, second direction about the first axis, the cam follower first remains stationary with respect to the second axis as the arm rotates past the second dwell surface, then is moved along the second axis to cause movement of the clutch, and thereafter again remains stationary with respect to the second axis as the arm rotates past the first dwell surface. 4. The apparatus according to claim 3, wherein the body comprises a first stop surface that engages with the cam follower to stop rotation of the cam in the first direction and an opposing, second stop surface that engages with the cam follower to stop rotation of the cam in the second direction. 5. The apparatus according to claim 4, wherein the cam follower comprises a stop wall located on an opposite side of the recess with respect to the second axis, wherein the first stop surface engages with the stop wall to stop said rotation of the cam in the first direction and wherein the second stop surface engages with the stop wall to stop said rotation of the cam in the second direction. 6. The apparatus according to claim 5, wherein the first and second stop surfaces radially extend from an upper portion of the body with respect to the first axis, and wherein a first lower side of the body engages with a first inside surface of the pocket when the first stop surface engages with the stop wall and wherein an opposite, second lower side of the body engages with a second inside surface of the pocket when the second stop surface engages with the stop wall. 7. The apparatus according to claim 6, wherein the first and second inside surfaces are disposed on opposite sides of the recess with respect to the second axis. 8. The apparatus according to claim 1, wherein during said constant rotation of the shift shaft in the first direction, the cam initially rotates with respect to the cam follower, the cam then engages with and causes the cam follower to move along the second axis, and the cam then again rotates with respect to the cam follower. 9. The apparatus according to claim 8, wherein during a constant rotation of the shift shaft in a second, opposite direction about the first axis, the cam initially rotates with respect to the cam follower, the cam then engages with and causes the cam follower to move along the second axis, and the cam then again rotates with respect to the cam follower. 10. The apparatus according to claim 1, wherein when the shift shaft rotates with respect to the first axis in the first direction, the cam first rotates through a first dwell zone wherein the cam does not cause movement of the cam follower, the cam then rotates through an actuating zone wherein the cam engages with and moves the cam follower, and the cam then rotates through a second dwell zone wherein the cam does not cause movement of the cam follower. 11. The apparatus according to claim 10, wherein when the shift shaft rotates with respect to the first axis in an opposite, second direction with respect to the first axis, the cam rotates back through the second dwell zone, the cam then rotates back through the actuating zone, and the cam then rotates back through the first dwell zone. 12. An apparatus for changing near in a marine propulsion system, the apparatus comprising: a shift shaft that rotates about a first axis;a cam that rotates about the first axis with the shift shaft, the cam having a body and an arm that radially extends from the body with respect to the first axis;an output shaft that rotates about a second axis that is perpendicular to the first axis;a clutch that moves in a direction parallel to the second axis to enact a gear change in the marine propulsion system; anda cam follower that moves parallel to the second axis to cause movement of the clutch, thereby enacting the gear change, the cam follower defining a pocket that is elongated with respect to the second axis and a recess that extends from the pocket along a third axis that is perpendicular to the first and second axes;wherein the cam is disposed in the pocket and the arm extends into the recess; andwherein during a constant rotation of the shift shaft in a first direction about the first axis, the cam follower moves with respect to the second axis to enact the gear change and also dwells with respect to the second axis;wherein during said constant rotation of the shift shaft in the first direction, the cam follower first remains stationary with respect to the second axis, then is moved along the second axis to cause movement of the clutch, and thereafter again remains stationary with respect to the second axis:wherein during a constant rotation of the shift shaft in an opposite, second direction about the first axis, the cam follower first remains stationary with respect to the second axis, then is moved along the second axis to cause movement of the clutch, and thereafter again remains stationary with respect to the second axis; andwherein the recess is at least partially defined by first and second actuated surfaces that extend along the third axis and first and second dwell surfaces that extend at opposite taper angles with respect to the third axis. 13. The apparatus according to claim 12, wherein the recess, viewed in a plane defined by the second and third axes, has a Y-shape. 14. The apparatus according to claim 12, wherein during said constant rotation of the shift shaft in the first direction, the arm first rotates past the first dwell surface, the arm then engages with the first actuated surface to move the cam follower, and the arm then rotates past the second dwell surface. 15. The apparatus according to claim 14, wherein during said constant rotation of the shift shaft in the second direction, the arm first rotates past the second dwell surface, then arm then engages with the second actuated surface to move the cam follower, and the arm then rotates past the first dwell surface. 16. The apparatus according to claim 15, wherein the arm comprises a head and stem, the stem having a first end connected to the body and a second end connected to the head, wherein the head, viewed in a plane defined by the second and third axes, is wider than the stem. 17. The apparatus according to claim 16, wherein the head has opposing first and second convex actuating surfaces that engage with the first and second actuated surfaces of the recess. 18. The apparatus according to claim 17, wherein the convex actuating surfaces apply a camming force on the first actuated surface during said constant rotation of the shift shaft in the first direction and on the second actuated surface during said constant rotation of the shift shaft in the second direction. 19. The apparatus according to claim 18, wherein the head has a planar end surface that extends between the actuating surfaces and that faces the first and second dwell surfaces when the cam rotates past the first and second dwell surfaces, respectively. 20. An apparatus for changing gear in a marine propulsion system, the apparatus comprising: a shift shaft that rotates about a first axis;a cam that rotates about the first axis with the shift shaft, the cam having a body and an arm that radially extends from the body with respect to the first axis;an output shaft that rotates about a second axis that is perpendicular to the first axis;a clutch that moves in a direction parallel to the second axis to enact a gear change in the marine propulsion system; anda cam follower that moves parallel to the second axis to cause movement of the clutch, thereby enacting the gear change, the cam follower defining a pocket that is elongated with respect to the second axis and a recess that extends from the pocket along a third axis that is perpendicular to the first and second axes;wherein the cam is disposed in the pocket and the arm extends into the recess;wherein when the shift shaft is rotated with respect to the cam follower, the cam first rotates through a first dwell zone wherein the cam does not move the cam follower, the cam then rotates through an actuating zone wherein the cam engages with and moves the cam follower, and the cam then rotates through a second dwell zone wherein the cam follower does not move the cam follower;wherein the recess is at least partially defined by first and second actuated surfaces that extend along the third axis and first and second dwell surfaces that extend at opposite taper angles with respect to the third axis; andwherein when the shift shaft rotates in the first direction, the arm rotates past the first dwell surfaces in the first dwell zone, then the arm engages the first actuating surface in the first actuating zone, and then the arm rotates past the second dwell surface in the second dwell zone.
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이 특허에 인용된 특허 (20)
Onoue Akihiro (Hamamatsu JPX), Ahead/astern shifting device for marine propulsion unit.
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