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US 6,010,426 AGranted
Lock device of output shaft
OwnerDaijiro Nakamurainventor
Life of this patent
Estimating the term…
Abstract
A lock device for an output shaft, wherein an output shaft is formed by connection of a driving shaft and a driven shaft, a play angle for not transmitting power for a specified angle in mutual rotating directions is formed in the connection area for connecting the driving shaft and driven shaft, a locking mechanism for locking by moving a lock member arrested on the driven shaft and held movably inward and outward in the radial direction is provided at the driven shaft side, and an unlocking mechanism for unlocking by moving the lock member of the locking mechanism in an unlocking direction within the rotating amount of the play angle is provided in the driving shaft.
Claims23
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft to said driven shaft to thereby form an output shaft, said connecting means forming a play angle in the rotating directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means provided in said connecting means and adjacent said driven shaft for moving said lock member to a locked position on said driven shaft;
- unlocking means provided in said connecting means and adjacent said driving shaft for moving said lock member to an unlocked position while said driving shaft is moved within said play angle, and by reverse rotation of said driving shaft relative to said driven shaft;
- and
- a planetary gear differential mechanism provided in said connecting means and comprising an internal gear, a planetary gear, a sun gear, and a carrier supporting said planetary gear, said carrier being coupled to said driven shaft and said sun gear being coupled to said driving shaft;
- wherein
- differential action of said internal gear and said sun gear causes said unlocking means to move said lock member to said unlocked position when said driving shaft is rotated, and causes said locking means to move said lock member to said locked position.
7 more elements
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft to said driven shaft to thereby form an output shaft, said connecting means forming a play angle in the rotating directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means provided in said connecting means and adjacent to said driven shaft for moving said lock member to a locked position on said driven shaft;
- unlocking means provided in said connecting means and adjacent to said driving shaft for moving said lock member to an unlocked position while said driving shaft is moved within said play angle, said unlocking means being operable by relative rotation between said driving shaft and said driven shaft;
- and
- planetary gear differential mechanism disposed between said driving shaft and said driven shaft and comprising an internal gear, a planetary gear, a sun gear, and a carrier supporting said planetary gear, said carrier being coupled to said driven shaft, and said sun gear being coupled to said driving shaft, wherein
- differential action of said internal gear and said sun gear and movement of said driven shaft cause said unlocking means to move said lock member to said unlocked position, and wherein said differential mechanism causes said locking means to move said lock member to said locked position.
6 more elements
An outupt shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft to said driven shaft to thereby form an output shaft, said connecting means forming a play angle in the rotating directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means provided in said connecting means and adjacent to said driven shaft for moving said lock member to a locked position on said driven shaft;
- an unlocking means provided in said connecting means and adjacent to said driving shaft for moving said lock member to an unlocked position while said driving shaft is moved within said play angle, said unlocking means comprising means for releasing said lock member from said unlocked position by reverse rotation of said driving shaft relative to said driven shaft;
- and
- a planetary gear differential mechanism disposed between said driving shaft and said driven shaft and comprising an internal gear, a planetary gear, a sun gear, and a carrier supporting said planetary gear, said carrier being coupled to said driven shaft, said sun gear being coupled to a brake member when said output shaft is stopped, and said internal gear being coupled to said unlocking means, wherein
- differential action of said internal gear and revolution of said planetary gear cause said unlocking means to be operated when said driven shaft is rotated, and wherein said planetary gear differential mechanism causes said lock member to be in said locked position.
6 more elements
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driven shaft to said driving shaft to thereby form an output shaft, said connecting means forming a play angle in the rotating directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means for moving said lock member to a locked position on said driven shaft;
- unlocking means for moving said lock member to an unlocked position while said driving shaft is moved within said play angle, said unlocking means comprising means for causing said lock member to be released from said unlocked position by differential operation of said driving shaft and said driven shaft;
- and
- planetary gear differential means for providing said differential operation of said driving shaft and said driven shaft and for operation of said locking means to move said lock member to said locked position, said differential means comprising an internal gear, a planetary gear, a sun gear, and a carrier supporting said planetary gear, said carrier being coupled to a brake member when said output shaft is stopped, said internal gear being coupled to said unlocking means so that movement of said internal gear and said planetary gear causes said unlocking means to move said lock member to said unlocked position when said driven shaft is rotated, and wherein said differential means causes said lock member to be moved to said locked position.
5 more elements
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft and said driven shaft to thereby form an output shaft, said connecting means forming a play angle in rotating directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means for moving said lock member to a locked position on said driven shaft;
- unlocking means for moving said lock member to an unlocked position while said driving shaft is moved within said play angle;
- a fixing member formed in a ring shape and rotatably held in a fixing position;
- and
- a torque limiter comprising means for pressing and fixing said fixing member with a specified load.
6 more elements
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft to said driven shaft to thereby form an output shaft, said connecting means forming a play angle in rotation directions of said driving shaft and said driven shaft for not transmitting power therebetweeen;
- a lock member disposed on said driven shaft;
- locking means for moving said lock member to a locked position on said driven shaft;
- unlocking means for moving said lock member to an unlocked position while said driving shaft is moved within said play angle;
- fixing member formed in a ring shape and rotatably held in a fixing position;
- and
- brake member comprising means for fixing and pressing said fixing member with a specified load.
6 more elements
An output shaft lock device comprising:
- a driven shaft;
- a driving shaft;
- connecting means for connecting said driving shaft to said driven shaft to thereby form an output shaft, said connecting means forming a play angle in rotational directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- a lock member disposed on said driven shaft;
- locking means for moving said lock member to a locked position on said driven shaft;
- and
- unlocking means for moving said lock member to an unlocked position while said driving shaft is moved within said play angle;
- wherein said unlocking means comprises pins formed on one portion of said unlocking means and cam holes formed on another portion of said unlocking means, and
- wherein during an initial phase of rotation of said driving shaft over the play angle, said cam holes abut against said pins to move said lock member to said unlocked position.
6 more elements
An output shaft lock device comprising:
- a driving shaft;
- a driven shaft;
- connecting means for connecting said driving shaft to said driven shaft thereby to form an output shaft, said connecting means forming a play angle in the rotational directions of said driving shaft and said driven shaft for not transmitting power therebetween;
- two lock members disposed on said driven shaft;
- locking means for moving said two lock members to a locked position on said driven shaft, said locking means comprising spring means for moving said two lock members to said locked position;
- and
- unlocking means for moving said two lock members to an unlocked position while said driven shaft is moved within said play angle;
- wherein said two lock members comprise a fixed member, lock pawls, and stopping pawls formed on said fixed member for engaging and disengaging said lock pawls, pins being formed on one portion of said unlocking means and cam holes formed on another portion of said unlocking means;
- whereby rotation of said driving shaft over said play angle abuts said cam holes against said pins to move said two lock members to said unlocked postion;
- wherein said unlocking means operates by reverse rotation of said driving shaft relative to said driven shaft;
- and
- wherein said two lock members are formed in a circumferential direction of said driven shaft.
9 more elements
Dependencies are inferred from the claim text.