Patent US3955712A successfully refreshed from Google Patents.
EP0185140A2
Expired / Lapsed
EP
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Disk playback apparatus
Assignee: Toshiba Corp
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Filing: 1985-08-28
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Granted: —
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Expires: 2005-08-28
Abstract
Abstract recorded disk playback apparatus in accordance with the present invention includes a sub-chassis (126) whose one end is supported as turntable by the main chassis (124) that is housed in a main frame, a carriage (156) which is freely movable on the sub-chassis (126) to feed the pick-up head (154) in the radial direction of the recorded disk (14), a turn table (16) which is placed on the sub-chassis (126) to have the record disk placed on it, a slide table (122) which transports the record disk to the position which coincides with the center of rotation of the turn table (16), a disk clamper (24) which is fixed rotatably to the main chassis (124), an adjustable mechanism (164,178) which moves the carriage (156), as well as turns upward/downward the sub-chassis (126), a driving motor (166) which, by the driving of the adjusting mechanism, serves commonly for the feeding drive of the pick-up head (154) and the turning drive of the sub-chassis (126), and a locking/unlocking mechanism which locks/unlocks the slide table in association with the operation of the adjusting mechanism. The engagement/ disengagement of the disk clamper (24) with respect to the recorded disk which is placed on the turn table is controlled by the raising/lowering drive of the sub-chassis. The adjusting mechanism may comprise a rack which moves in the radial direction of the recorded disk under the power of the driving motor, a stopper which defines the range of operation of the carriage, a linking mechanism which makes the linkage possible between the rack and the carriage within the range of operation of the carriage, and a raising/lowering mechanism which raises-lowers the sub-chassis in association-with the shifting operation of the rack.
Inventors
- 👤 Koich Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:13
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/05; G11B17/053; G11B17/056; G11B17/022; G11B17/028; G11B17/035
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
154 words
A recorded disk playback apparatus for reproducing information memorized in a record disk (14) by means of a pick-up head (154), characterized by: a main chassis (124) which is housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) one end of which is supported turnably by said main chassis (124); a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk (14); a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and driven to rotate by a turn table motor (20); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); an adjusting mechanism (164,178) which moves the carriage (156) and turns upward/downward said sub-chassis (126); and driving means (166) dor driving said adjusting mechanism.
Claim 2
Dependent Claim
154 words
A recorded disk playback apparatus for reproducing information memorized in a record disk (14) by means of a pick-up head (154), characterized by: a main chassis (124) which is housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) one end of which is supported turnably by said main chassis (124); a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk (14); a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and driven to rotate by a turn table motor (20); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); an adjusting mechanism (164,178) which moves the carriage (156) and turns upward/downward said sub-chassis (126); and driving means (166) dor driving said adjusting mechanism.
Claim 3
Dependent Claim
39 words
A recorded disk playback apparatus as clamed in Claim 1, in which the engagement/disengagement of said disk clamper with respect to the recorded disk that is placed on said turn table is controlled by the raising/lowering of said sub-chassis.
Claim 4
Dependent Claim
46 words
A recorded disk playback apparatus as claimed in Claim 1, in which the recorded disk that is engaged with said turn table is arrnged to be clamped between said disk clamper and said turn table at the time when said sub-chassis attains a predetermined rotating position.
Claim 5
Dependent Claim
37 words
A recorded disk playback apparatus as claimed in Claim 4, in which said driving means comprises a driving motor which serves commonly for the feeding drive for the pick-up head and the raising/lowering drive for said sub-chassis.
Claim 6
Dependent Claim
84 words
A recorded disk playback apparatus as claimed in Claim 4, in which said adjusting mechanism comprises a rack which moves in the radial direction of the recorded disk under the power of the driving motor, a stopper which defines the moving range of said carriage, a linking mechanism which makes it possible to link the rack and the carriage within the moving range of said carriage, and a raising/lowering mechanism which turns upward/downward said sub-chassis in association with the shifting motion of the rack.
Claim 7
Dependent Claim
56 words
A recorded disk playback apparatus as claimed in.Claim 5, in which the linking mechanism is arranged to make the rack alone movable when the motion of said carriage is regulated by the stopper, and to make the linkage between the rack and said cariage possible when the regulation of the stopper on said carriage is released.
Claim 8
Dependent Claim
39 words
A recorded disk playback apparatus as claimed in Claim 6, in which the raising/lowering mechanism turns upward/downward said sub-chassis in association with the shifting motion of the rack when the motion of said carriage is regulated by the stopper.
Claim 9
Dependent Claim
70 words
A recorded disk playback apparatus as claimed in Claim 7, in which said linking mechanism comprises long openings prepared in the rack and protuberances that are mounted on said carriage as freely movable in the long openings in the rack, and a linkage between said carriage and the rack being achieved only when the long openings in the rack and the protuberances on said carriage are joined with direct contact.
Claim 10
Dependent Claim
118 words
A recorded disk playback apparatus as claimed in Claim 7, in which said raising/lowering mechanism comprises a slit prepared at the front end of said sub-chassis, a metallic crank held revolvably by a bracket fixed to said main chassis, and an elastic component which energizes said sub-chassis for all times so as to turn it in the direction in which said turn table is to be raised, and one end of the metallic crank is linked to the slit, while the other end of the crank is prepared at a position where it makes a direct contact with the rack, and it being arranged to lower the sub-chassis in association with the shifting motion of the rack alone.
Claim 11
Dependent Claim
52 words
A recorded disk playback apparatus as claimed in Claim 5, further comprising: a slide table for transporting the recorded disk to the position which coincides with the center of rotation of said turn table; and a locking/unlocking mechanism which locks/unlocks said slide table in association with the shifting motion of the rack.
Claim 12
Dependent Claim
167 words
A recorded disk playback apparatus as claimed in Claim 10, in which said locking/unlocking mechanism is equipped with a locking lever which holds the slide table at the housing position of the playback apparatus by linking the slide table with a locking post prepared on said slide table, an unlock holding lever which holds the locking lever at its released position, and an unlocking lever which is moved by the shifting motion of the rack during the loading/unloading of the disk, and one end of the unlocking lever being provided with an unlocking ratchet, while the other end of the unlocking lever is moved by the driving means to cause the unlocking ratchet to move solidly with the unlocking lever and cause the locking lever to move to its unlocking position by the unlocking ratchet, during the loading operation in such a manner that, even when the unlocking lever is moved, it will not affect the locking lever due to the dodging turn of the unlocking ratchet.
Claim 13
Dependent Claim
180 words
A recorded disk playback apparatus as claimed in Claim 10, in which said locking/unlocking mechanism is equipped with a locking lever which holds the slide table at the housing position of the playback apparatus by linking the slide table with a locking pin prepared on the slide table, and an unlocking lever which is moved by the rack of the driving means that is shifted during the loading/unloading of the disk, and on one end of the unlocking lever there being provided an unlocking ratchet, while the other end of the unlocking lever is moved by the parts of the driving means to be moved solidly with the unlocking lever, the unlocking ratchet moving the locking lever to its unlocking position, the locking lever being not affected during the loading operation, even when the unlocking lever is moved, because of the dodging turn of the unlocking ratchet, and it being arranged that the locking pin on the slide table rides across and presses the cam slope at the tip of the locking lever, to be locked at the locking lever.
Claim 14
Dependent Claim
45 words
A recorded disk playback apparatus as claimed in Claim 10, in which said adjusting mechanism further comprises a control mechanism which controls the turning on/off of the driving motor in accordance with the shifted position of said carriage and the raised/lowered position of said sub-chassis.
Claim 15
Dependent Claim
35 words
A recorded disk playback apparatus as claimed in Claim 10, further comprising: a push-back mechanism for pushing out said slide table at the point in time when the locking of said slide table is released.
Claim 16
Dependent Claim
259 words
A recorded disk playback apparatus for reproducing information memorized in a record disk by means of a pick-up head (154), characterized by: a main chassis (124) which is housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) whose one end is supported turnably by said main chassis ( 124 ) ; 0185140 a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk (14); a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and driven to rotate by a turn table motor (20); a slide table (122) for transporting the record disk (14) to the position which coincides with the center of rotation of said turn table (16); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); an adjusting mechanism (164,178) for shifting said carriage (156) as well as for turning upward/downward said sub-chassis (126), the engagement/disengagement of said disk clamper (24) with respect to the record disk (14) which is placed on said turn table (16) being controlled by the raising/lowering of said sub-chassis (126); a driving motor (166) to serve commonly for the feeding drive of the pick-up head (154) and the turning drive of said sub-chassis (126) by the driving of said adjusting mechanism; and a locking/unlocking mechanism for locking/unlocking said slide table (122) in association with the operation of said adjusting mechanism (164, 1 78).
Claim 17
Dependent Claim
259 words
A recorded disk playback apparatus for reproducing information memorized in a record disk by means of a pick-up head (154), characterized by: a main chassis (124) which is housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) whose one end is supported turnably by said main chassis ( 124 ) ; 0185140 a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk (14); a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and driven to rotate by a turn table motor (20); a slide table (122) for transporting the record disk (14) to the position which coincides with the center of rotation of said turn table (16); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); an adjusting mechanism (164,178) for shifting said carriage (156) as well as for turning upward/downward said sub-chassis (126), the engagement/disengagement of said disk clamper (24) with respect to the record disk (14) which is placed on said turn table (16) being controlled by the raising/lowering of said sub-chassis (126); a driving motor (166) to serve commonly for the feeding drive of the pick-up head (154) and the turning drive of said sub-chassis (126) by the driving of said adjusting mechanism; and a locking/unlocking mechanism for locking/unlocking said slide table (122) in association with the operation of said adjusting mechanism (164, 1 78).
Claim 18
Dependent Claim
43 words
A recorded disk playback apparatus as claimed in Claim 15, in which the recorded disk which is engaged with said turn table is arranged to be clamped between said disk clamper and said turn table when said sub-chassis attains a predetermined rotating position.
Claim 19
Dependent Claim
84 words
A recorded disk playback apparatus as claimed in Claim 15, in which said adjusting mechanism comprises a rack which moves in the radial direction of the recorded disk under the power of the driving motor, stopper which defines the shifting range of said carriage, a linking mechanism which makes the linkage possible between the rack and said carriage within the range of motion of said carriage, and a raising/lowering mechanism which turns upward/downward said sub-chassis in association with the shifting operation of the rack.
Claim 20
Dependent Claim
62 words
A recorded disk playback apparatus as claimed in Claim 15, in which the linking mechanism is arranged to make the shifting of the rack alone possible when the operation of said carriage is regulated by the stopper, and to make the linkage possible between the rack and said carriage when the regulation of operation on said carriage by the stopper is released.
Claim 21
Dependent Claim
39 words
A recorded disk playback apparatus as claimed in Claim 18, in which the raising/lowering mechanism turns upward/downward said sub-chassis in association with the shifting motion of the rack when the operation of said carriage is regulated by the stopper.
Claim 22
Dependent Claim
177 words
A recorded disk playback apparatus as claimed in Claim 15, in which said locking/unlocking mechanism is equipped with a locking lever for holding the locking of the slide table at its housing position in the playback apparatus by linking the locking lever with the slide table by means of a locking post prepared on the slide table, an unlock holding lever which holds the locking lever at the released position, and an unlocking lever which is moved by the rack that undergoes shifting during the loading/unloading of the disk, and on one end of the locking lever being provided an unlocking ratchet, while the other end of the unlocking lever moves solidly with the unlocking lever by being pushed by the parts of the driving mechanism to let the unlocking ratchet shift the locking lever to the unlocking position, in such a manner that the locking/unlocking is carried out in such a way that will not affect the locking lever even when the unlocking lever is moved by way of the dodging turn of the unlocking ratchet.
Claim 23
Dependent Claim
231 words
A recorded disk playback apparatus for, reproducing information memorized in a record disk (14) by means of a pick-up head (154), characterized by: a main chassis (124) housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) whose one end is supported turnably by said main chassis (124); a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk; a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and being driven to rotate by a turn table motor (20); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); a driving motor (200) which serves commonly for the feeding drive of the pick-up head (154) and for the upward/downward turning drive of said sub-chassis (126); a rack (218) which moves in the radial direction of the recorded disk under the power of said driving motor; a stopper (292) which defines the range of operation of said carriage; a linking mechanism (220,210,212) which makes the linkage possible between the rack (218) and said carriage (156) within the range of movement of said carriage; and a raising/lowering mechanism (228) which turns upward/downward said sub-chassis (126) in association of the shifting operation of the rack (218).
Claim 24
Dependent Claim
231 words
A recorded disk playback apparatus for, reproducing information memorized in a record disk (14) by means of a pick-up head (154), characterized by: a main chassis (124) housed in a main frame of the recorded disk playback apparatus; a sub-chassis (126) whose one end is supported turnably by said main chassis (124); a carriage (156) which is freely movable on said sub-chassis (126) for feeding the pick-up head (154) in the radial direction of the record disk; a turn table (16) for placing the record disk (14), said turn table (16) being placed on the sub-chassis (126) and being driven to rotate by a turn table motor (20); a disk clamper (24) which is mounted rotatably at a fixed position with respect to said main chassis (124); a driving motor (200) which serves commonly for the feeding drive of the pick-up head (154) and for the upward/downward turning drive of said sub-chassis (126); a rack (218) which moves in the radial direction of the recorded disk under the power of said driving motor; a stopper (292) which defines the range of operation of said carriage; a linking mechanism (220,210,212) which makes the linkage possible between the rack (218) and said carriage (156) within the range of movement of said carriage; and a raising/lowering mechanism (228) which turns upward/downward said sub-chassis (126) in association of the shifting operation of the rack (218).
Claim 25
Dependent Claim
40 words
A recorded disk reporducing apparatus as claimed in Claim 21, in which the engagement/disengagement of said disk clamper with respect to the recorded disk which is placed on said turn table is controlled by the turning operation of said sub-chassis.
Claim 26
Dependent Claim
40 words
A recorded disk playback apparatus as claimed in Claim 21, in which the recorded disk which is linked to said turn table is clamped between said disk clamper and said turn table when said sub-chassis attains a predetermined rotating position.
Claim 27
Dependent Claim
61 words
24 . A recorded disk playback apparatus as claimed in Claim 21, in which linking mechanism is arranged to make the rack alone movable when the motion of said carriage is regulated by the stopper, and to make the linkage between the rack and said carriage possible when the regulation by the stopper on the operation of said carriage is released.
Claim 28
Dependent Claim
41 words
25 . A recorded disk playback apparatus as claimed in Claim 24, in which the raising/lowering mechanism turns upward/downward said sub-chassis in association with the shifting operation of the rack when the motion of said carriage is regulated by the stopper.
Claim 29
Dependent Claim
75 words
A recorded disk playback apparatus as claimed in Claim 25, further comprising: a slide table which transforms the recorded disk to the position which coincides with the center of rotation of said turn table; a locking/unlocking mechanism which locks/unlocks said slide table in association with the shifting operation of the rack; and a push-back mechanism which pushes out said slide table at the point in time when the locking of said slide table is released.
References Cited (Backward Citations)
No citation records indexed.
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