Source: http://www.google.com/patents/US7340752?dq=inassignee:integral+inassignee:peripherals
Timestamp: 2017-02-27 02:32:46
Document Index: 428241089

Matched Legal Cases: ['Application No. 2003', 'art 10', 'art 20', 'art 10', 'art 43', 'art 20', 'art 45', 'art 44', 'art 30', 'arts 43', 'art 10', 'art 43', 'art 20', 'art 45', 'arts 19', 'art 30', 'arts 43']

Patent US7340752 - Disc driving device and cam for disc driving device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsIn a disc driving device that performs loading operation to transfer a disc, which is a disc-shaped storage medium, in its radial direction, and chucking operation to transfer the disc substantially in the direction of the thickness, the loading operation and the chucking operation are to be performed...http://www.google.com/patents/US7340752?utm_source=gb-gplus-sharePatent US7340752 - Disc driving device and cam for disc driving deviceAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7340752 B2Publication typeGrantApplication numberUS 11/716,252Publication dateMar 4, 2008Filing dateMar 9, 2007Priority dateSep 2, 2003Fee statusLapsedAlso published asCN1591638A, CN100489980C, DE602004031810D1, EP1513146A2, EP1513146A3, EP1513146B1, US7191454, US20050050564, US20070180458Publication number11716252, 716252, US 7340752 B2, US 7340752B2, US-B2-7340752, US7340752 B2, US7340752B2InventorsTakamasa ArakiOriginal AssigneeSony Computer Entertainment Inc., Sony CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (21), Referenced by (2), Classifications (15), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetDisc driving device and cam for disc driving device
US 7340752 B2Abstract
1. A recording medium driving apparatus comprising:
a disc insertion/ejection port;
first and second recording medium supporting members disposed in the vicinity of the disc insertion/ejection port, said first recording medium supporting member having two disc support portions, and said second recording medium supporting member having two disc support portions;
a third recording medium supporting member disposed remotely from the disc insertion/ejection port and having two disc support portions; and
a recording medium chucking member operable to move to a holding position for holding said disc;
wherein said support portions move to support said disc when said recording medium chucking member commences operation to hold said disc.
2. The apparatus according to claim 1, further comprising a driving force for driving a support portion of one of said recording medium supporting members.
3. The apparatus according to claim 2, wherein the other support portion of said one recording medium supporting member is fixed thereon without rotating, and said disc rotates about a support point established by said fixed supporting portion as its fulcrum.
4. The apparatus according to claim 2, further comprising a sensor to detect the insertion of said disc and to trigger said driving force, thereby starting a disc-loading operation.
5. The apparatus according to claim 2, further comprising a belt and pulley arrangement for transmitting said driving force to the driven support portion.
6. The apparatus according to claim 1, further comprising a driving force for driving a respective support portion in each of said first and second recording medium supporting members.
7. The apparatus according to claim 1, further comprising a belt and pulley arrangement for transmitting said driving force to said respective support portions.
8. The apparatus according to claim 1, wherein said support portions of said first and second recording medium supporting members exhibit respective arrangement pitches, and the arrangement pitch of the support portions of said first recording medium supporting member is different from the arrangement pitch of the support portions of said second recording medium supporting member.
9. The apparatus according to claim 1, wherein said third recording medium supporting member is movable; and further comprising a controlling member for stopping movement of said third recording medium supporting member.
10. The apparatus according to claim 1, further comprising a controlling member for moving said support portions away from said disk.
11. The apparatus according to claim 1, wherein said support portions are positionable; and further comprising a controlling member for controlling the position of the support portions according to the size of said disc.
This is a continuation of application Ser. No. 10/931,419, filed Sep. 1, 2004, now U.S. Pat. No. 7,191,454, with a claim of priority under 35 USC 119 to Japanese Application 2003-309534, filed in Japan on Sep. 2, 2003, the entirety thereof being incorporated herein by reference.
This application claims priority of Japanese Patent Application No. 2003-309534, filed on Sep. 2, 2003, the entirety of which is incorporated by reference herein.
Patent Reference 1: Japanese Patent Application Laid-Open No. 2002-304799
FIGS. 5A to 5C are explanatory views showing an exemplary structure of a cam in the disc driving device shown in FIGS. 1A and 1B. FIG. 5A shows an exemplary structure of the face side. FIG. 5B shows an exemplary structure of the rear side. FIG. 5C is a sectional view showing a part along line A-A in FIG. 5A.
After that, as the driving source continues rotational driving and the transfer of the 12-cm disc in the radial direction is continued, the outer circumferential end part of the 12-cm disc is supported by the roller members 12 b, 12 d of the first roller arm part 10 and is abutted against the circumferential parts of the roller members 22 a, 22 b of the second roller arm part 20. Then, as the transfer of the 12-cm disc in the radial direction is still continued by the rotational driving of the driving source after the abutment, the roller members 22 a, 22 b are pressed toward the transfer direction by the outer circumferential end part of the 12-cm disc. This causes the pair of roller arms 21 a, 21 b to sway synchronizing substantially symmetrically with reference to the center of the 12-cm disc (S105).
When the chucking arm 31 sways according to the rotation of the cam 40 to a position where the chucking plate 32 a of the chucking member 32 is perfectly engaged with the center hole of the 12-cm disc (position where they contact each other), the guide boss 17 of the roller arm 11 a of the first roller arm part 10 is engaged with the 12-m disc chucking cam groove part 43 b of the cam groove 43, on the face side of the cam 40, and the guide boss 25 of the roller arm 21 a of the second roller arm part 20 is engaged with the 12-cm disc chucking cam groove part 45 c of the cam groove 45, on the rear side of the cam 40. This causes the roller arms 11 a, 11 b, 21 a, 21 b to resume swaying (S109). In this case, however, the roller arms 11 a, 11 b, 21 a, 21 b sway in such a direction that the roller members 12 b, 12 d, 22 a, 22 b of the roller arms 11 a, 11 b, 21 a, 21 b, that is, the roller members 12 b, 12 d, 22 a, 22 b supporting the outer circumferential end part of the 12-cm disc at the four points, move away from the outer circumferential end part.
Following the shape of the chucking cam groove part 44 of the cam 40, the chucking arm 31 sways to a state where a spindle hub (not shown) of the spindle mechanism and the chucking member 32 of the chucking arm part 30 can hold the 12-cm disc between them (S110). Moreover, following the shapes of the 12-cm disc chucking cam groove parts 43 b, 45 c of the cam 40, the roller arms 11 a, 11 b, 21 a, 21 b sway to positions where the roller members 12 b, 12 d, 22 a, 22 b are not in contact with the outer circumferential end part of the 12-cm disc (see FIG. 12). Since this enables the 12-cm disc to be rotated by the spindle mechanism, the disc driving device stops the rotational driving of the driving source and thus stops the rotation of the roller members 12 c, 12 d and the cam 40 (S111). The stop of the driving source may be triggered by a signal from a sensor for detecting disc chucking or a signal from a sensor from detecting the position of the cam 40, or by measuring time from the start of rotation of the driving source and determining the lapse of a predetermined time as a result of the measurement.
In the case of the 12-cm disc, the regulation of swaying of the roller arms 21 a, 21 b, that is, the state where the roller arms 21 a, 21 b no longer sway toward the back, is realized by the cam groove 45 and the 12-cm disc is positioned at the centering position. The operation in the case of the 8-cm disc is different from the operation in the case of the 12-cm disc in that the regulation of swaying of the roller arms 11 a, 11 b, that is, the state where the roller arms 11 a, 11 b no longer sway toward the back, is realized by the cam groove 43 and the 8-cm disc is positioned at the centering position. However, the correspondence between the diameter of disc and the roller arms 11 a, 11 b, 21 a, 21 b regulated in swaying is not limited to the above-described mode. As long as the disc can be positioned at the centering position by the regulation of swaying by the cam 40, for example, the correspondence may be reverse to the above-described mode. Alternatively, the same roller arms may be regulated in swaying, both in the case of the 8-cm disc and in the case of the 12-cm disc.
When the chucking arm 31 sways according to the rotation of the cam 40 to a position where the chucking plate 32 a of the chucking member 32 is perfectly engaged with the center hole of the 8-cm disc (position where they contact each other), the guide boss 17 of the roller arm 11 a of the first roller arm part 10 is engaged with the 8-cm disc chucking cam groove part 43 c of the cam groove 43, on the face side of the cam 40, and the guide boss 25 of the roller arm 21 a of the second roller arm part 20 is engaged with the 8-cm disc chucking cam groove part 45 d of the cam groove 45, on the rear side of the cam 40. That is, since the positions of the roller arms 11 a, 11 b, 21 a, 21 b after the end of the loading operation in the case of the 12-cm disc are different from their positions in the case of the 8-cm disc because of the difference in diameter between the two discs, in the case of the 8-cm disc, the guide bosses 17, 25 are engaged with the cam grooves 43 c, 45 d that are different from the cam grooves in the case of the 12-cm disc. This causes the roller arms 11 a, 11 b, 21 a, 21 b to resume swaying (S210). Also in this case, the roller arms 11 a, 11 b, 21 a, 21 b sway in such a direction that the roller members 12 b, 12 d, 22 a, 22 b of the roller arms 11 a, 11 b, 21 a, 21 b, that is, the roller members 12 b, 12 d, 22 a, 22 b supporting the outer circumferential end part of the 8-cm disc at the four points, move away from the outer circumferential end part, as in the case of the 12-cm disc.
As the roller arms, 11 a, 11 b, 21 a, 21 b resume swaying and the chucking arm 31 sways toward the spindle mechanism, the 8-cm disc positioned at the centering position by the loading operation is transferred substantially in the direction of the thickness of the disc according to the swaying of the chucking arm 31 while being assisted by the tapered parts 19 a, 27 a of the roller members 12 b, 12 d, 22 a, 22 b, with the center hole of the 8-cm disc engaged with the chucking plate 32 a of the chucking member 32. The chucking arm 31 sways to a state where the spindle hub of the spindle mechanism and the chucking member 32 of the chucking arm part 30 can hold the 8-cm disc between them (S211). Moreover, following the 8 cm disc chucking cam groove parts 43 c, 45 d of the cam 40, the roller arms 11 a, 11 b, 21 a, 21 b sway to positions where the roller members 12 b, 12 d, 22 a, 22 b are not in contact with the outer circumferential end part of the 8-cm disc (see FIG. 22). Since this enables the 8-cm disc to be rotated by the spindle mechanism, the disc driving device stops the rotational driving of the driving source and thus stops the rotation of the roller members 12 c, 12 d and the cam 40 (S212). The trigger to stop the driving source is the same as in the case of the 12-cm disc.
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