JP2011081863A - Drive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cause a lower casing to firmly support a base unit without using a screw. <P>SOLUTION: A drive device includes a device body 2 where the lower casing 4 and an upper cover 5 are made to abut on each other, a base unit 8 comprising a recording and reproducing mechanism 50, and a vertically moving mechanism 9 of the base unit 8. The drive device comprises a cushioning mechanism 40 which includes: a supporting convex part 22 which is formed at the lower casing 4 and inserted to a connection part 56 provided at the end of the base unit 8, and supports the vertical movement of the base unit 8; and an abutting convex part 32 which is formed at the upper cover 5 and abuts on the supporting convex part 22 and an insulator 57 inserted to the supporting convex part 22. The cushioning mechanism 40 is provided in the vicinity of a fixing part 35 which fixes the vertically connecting position of the upper cover 5 and the lower casing 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drive device for a recording medium, and more particularly to a drive device in which a base unit for supporting a recording / reproducing mechanism for recording and / or reproducing with respect to a recording medium is disposed in the apparatus main body so as to be movable up and down.

  2. Description of the Related Art Conventionally, in a disk drive device that writes and / or reads information signals to and from an optical disk, a so-called tray type in which a disk tray on which an optical disk is placed is conveyed over the inside and outside of the apparatus main body, and an optical disk are provided. A so-called slot-in type is provided which is directly inserted and ejected inside and outside the apparatus body.

  As shown in FIG. 16, this type of disk drive device has a substantially rectangular box-shaped device main body 100 configured by combining a lower housing 101 and an upper cover 102. In the apparatus main body 100, a base unit 104 provided with an optical pickup mechanism 103 that records and / or reproduces an information signal with respect to the optical disc, and the base unit 104 are connected to the optical disc by the optical pickup mechanism 103. And an elevating mechanism 105 that elevates and lowers between a recording / reproducing position for recording and reproducing and a standby position for retreating from the conveyance area of the optical disc (see Patent Document 1).

  The base unit 104 is formed in a substantially rectangular shape, and is provided with a disk rotation mechanism 106 that rotatably supports an optical disk on one end 104 a in the longitudinal direction, and a lifting support frame 107 that is lifted and lowered by the lifting mechanism 105. . In addition, the base unit 104 is connected to the lower housing 101 on the other end 104b side in the longitudinal direction, and is provided with a connecting piece 109 serving as a lifting fulcrum.

  As shown in FIG. 17, the coupling piece 109 is provided with an insertion hole 112 through which the insulator 110 is attached and the support protrusion 111 protruding from the lower housing 101 is inserted. A part of the insertion hole 112 is opened, and a cylindrical insulator 110 in which an elastic resin is molded is attached from an open end. In the base unit 104, after the insulator 110 is mounted in the insertion hole 112, the support convex portion 111 protruding from the lower housing 101 is inserted through the insulator 110.

  The support convex portion 111 is formed in a hollow cylindrical shape provided with a screw hole 111a extending from the upper surface in the protruding direction. The support protrusion 111 is inserted into the connection hole 112 provided in the connection piece 109 of the base unit 104, and then the screw 113 is inserted into the screw hole 111a facing the upper surface, thereby supporting the base unit 104. To do.

  When the one end 104a side is moved up and down by the lifting mechanism 105, the base unit 104 is rotated about the support convex portion 111, and the optical pickup mechanism 103 is moved up and down between the recording / reproducing position and the standby position.

JP 2008-176883 A

  However, in the above-described configuration, in order to attach the base unit to the lower housing, the screws are inserted after the connection holes of the base unit are inserted into the support convex portions protruding from the lower housing. Therefore, in order to attach the base unit to the lower housing, a screw is required, and the work for fixing the screw is increased, resulting in an increase in the number of parts and an assembling work.

  In addition, when vibration or impact is applied to the apparatus main body 100, the load of the base unit 104 is applied to the support convex portion 111 and the screw 113 via the connecting piece 109 and the insulator 110. The screw 113 has sufficient strength to withstand the load of the base unit 104 when properly screwed. However, the screw 113 is driven obliquely, the driving is insufficient, or the driving force is excessive and the screw hole If the screwing operation is not performed properly, for example, if 111a is damaged, for example, if it is accidentally dropped during transportation, there is a risk that it will come off the screw hole 111a due to a drop impact.

  Therefore, an object of the present invention is to provide a drive device that firmly supports a base unit on a lower housing without using screws.

  In order to solve the above-described problems, a drive apparatus according to the present invention includes an apparatus main body configured by a lower casing and an upper cover being abutted and coupled, and a conveyance for conveying a recording medium inside and outside the apparatus main body. A base unit provided with a mechanism and a recording / reproducing mechanism for recording and / or reproducing information signals with respect to the recording medium, and a base unit, and the recording / reproducing mechanism records and / or records on the recording medium. An elevating mechanism that elevates and lowers between a recording / reproducing position for performing reproduction and a standby position for retreating from the conveyance area of the recording medium, and the apparatus main body is formed in the lower casing and includes an end portion of the base unit A support convex portion that is inserted into the connecting portion provided in the upper cover and supports the raising and lowering of the base unit, and a contact convex portion that is formed on the upper cover and contacts the support convex portion. The abutting convex portion is fitted to the connecting portion, and a buffer mechanism is formed to abut against the insulator inserted through the support convex portion, and the buffer mechanism is formed in the vertical direction of the upper cover and the lower housing. It is provided in the vicinity of the fixing portion that fixes the coupling position.

  According to the buffer mechanism of the present invention, the impact applied to the base unit is concentrated on the support convex portion by the contact between the support convex portion supporting the base unit and the contact convex portion provided on the upper cover. There is nothing. Therefore, according to the present invention, the base unit can be firmly supported by the support convex part and the contact convex part without using screws. In addition, since the shock-absorbing mechanism of the present invention is provided in the vicinity of the fixed portion that fixes the vertical coupling position between the lower housing and the upper cover, the height of the contact convex portion with respect to the support convex portion is highly accurate. I can put it out. Therefore, according to the present invention, the support convex portion and the contact convex portion can be reliably brought into contact with each other, and the base unit can be firmly supported by the support convex portion and the contact convex portion.

It is a perspective view which shows the electronic device by which a disk drive apparatus is mounted. 1 is an external perspective view showing a disk drive device. 1 is an external perspective view showing a disk drive device from which a disk tray is pulled out. 1 is an exploded perspective view showing a disk drive device. It is a perspective view which shows the accommodating part of an upper cover. It is a perspective view which shows the back surface of an upper cover. It is sectional drawing which shows a buffer mechanism and a fixing | fixed part. It is a perspective view which shows the inside of a disk drive apparatus. It is sectional drawing which shows the state which the fitting pin of a chucking plate has opposed the fitting hole. It is sectional drawing which shows the state which the disc table and the chucking plate have fitted. It is a perspective view which shows a chucking plate, (a) shows an upper surface side, (b) shows a lower surface side. It is a perspective view which shows a support plate, (a) shows an upper surface side, (b) shows a lower surface side. It is sectional drawing which shows the state which is guiding the centering pin with the centering wall. In other embodiment, it is sectional drawing which shows the state which the fitting pin of the chucking plate has opposed the fitting hole. In other embodiment, it is sectional drawing which shows the state which the disk table and the chucking plate have fitted. It is a disassembled perspective view which shows the conventional disk drive apparatus. It is sectional drawing which shows the support structure of the lower housing | casing which supports a base unit in the conventional disk drive apparatus.

Hereinafter, a disk drive device to which the present invention is applied will be described in detail with reference to the drawings. The description will be given in the following order.
1. 1. Device main body 2. Transport mechanism Base unit 4. 4. Elevating mechanism Clamp mechanism

<1. Main unit>
This disk drive device 1 has a substantially rectangular device main body 2 and is disposed inside an optical disk recorder 3 for recording and / or reproducing information signals with respect to an optical disk, for example, as shown in FIG. In addition, it is used for stationary electronic devices such as game machines and desktop personal computers. As shown in FIGS. 2, 3, and 4, the apparatus main body 2 is configured by a lower casing 4 and an upper cover 5 being connected to each other. The apparatus body 2 includes a transport mechanism 7 that includes a disk tray 23 and transports the optical disk 6 in and out, and a base unit 8 that is provided with an optical pickup mechanism 50 that records and / or reproduces information signals with respect to the optical disk. And an elevating mechanism 9 for elevating and lowering the base unit 8 between a recording / reproducing position where the optical pickup mechanism 50 records and / or reproduces the optical disk 6 and a standby position where the optical unit 6 is retracted from the transport area of the optical disk 6. Prepare.

[Lower casing 4]
The lower housing 4 constituting the apparatus main body 2 has a substantially rectangular box shape, and a disc tray 23 is supported in a longitudinal direction through an insertion / removal port 11 formed on the front side. The lower housing 4 is raised from the bottom along the left and right side walls 4a and 4b, provided with a guide deck 12 for guiding the movement of the disk tray 23, and supports the transport mechanism 7 and the lifting mechanism 9 on the front side. A support deck 13 is provided.

  The guide deck 12 has a plurality of intermittently protruding guide protrusions 14 that guide the movement of the disk tray 23. The guide deck 12 is inserted into a slide guide groove (not shown) in which the guide convex portion 14 is formed on the back surface of the disc tray 23 in the transport direction, and thereby the movement of the disc tray 23 can be guided. The guide deck 12 is formed with a pair of left and right bearing recesses 15 for supporting a lifting support frame 70 of the lifting mechanism 9 described later. The bearing recess 15 is provided with a substantially hook-like engagement piece, and a rotation shaft portion 72a formed on the elevating support frame 70 is rotatably engaged by the engagement piece.

  The support deck 13 provided on the front side of the lower housing 4 transmits a drive motor 17 that supplies a drive force to the disk tray 23 and the lift cam 71, and transmits the drive force of the drive motor 17 to the disk tray 23 and the lift cam 71. A driving gear 18 that rotates and a pair of pulleys 19 that transmit the driving force of the driving motor 17 to the driving gear 18 are disposed.

  The support deck 13 supports the lifting cam 71 so as to be movable in a direction substantially perpendicular to the conveying direction of the disk tray 23. The support deck 13 is configured such that the tip of a detection switch for detecting the slide position of the elevating cam 71 faces the moving path of the elevating cam so that it can come into contact with the elevating cam 71.

  In the lower housing 4, a base unit deck 21 that supports the base unit 8 is formed on the back side of the support deck 13. The base unit 8 supported by the base unit deck 21 is supported on the front side by an elevating support frame 70 described later, and the elevating support frame 70 is operated up and down by an elevating cam 71. As a result, the base unit 8 moves upward to the upper cover 5 side and chucks the optical disk 6 and a standby position where the base unit 8 descends to the bottom surface side of the lower housing 4 and the chucking with the optical disk 6 is released. It is lifted up and down.

  Further, the lower housing 4 has a pair of support convex portions 22 and 22 constituting a buffer mechanism 40 to be described later on the base unit deck 21 in the vicinity of the back surface and in the vicinity of both side walls 4a and 4b. Further, the lower casing 4 is formed with a locking convex portion 36 constituting a fixing portion 35 with the upper cover 5 on the back wall 4c. Further, the lower casing 4 is formed with a pair of engaging projections 24, 24 that are snap-fit fastened to the upper cover 5 on the front side of the side walls 4a, 4b. The support convex portion 22, the locking convex portion 36, and the engaging convex portion 24 will be described later together with the upper cover 5.

[Upper cover 5]
Next, the upper cover 5 that faces the lower housing 4 will be described. The upper cover 5 constitutes the upper surface of the apparatus body 2 by closing the opened upper surface of the lower housing 4, and has a rectangular plate shape having the same shape as the lower housing 4.

  The upper cover 5 is formed with a storage portion 25 in which a chucking plate 81 that constitutes a clamp mechanism 80 that rotatably clamps the optical disk 6 and a support plate 82 that supports the chucking plate 81 on the upper cover 5 are stored. ing. As shown in FIG. 5, the storage unit 25 includes an opening 26 that allows the chucking plate 81 to face the lower housing 4, and a support surface 27 that is formed around the opening 26 and supports the chucking plate 81. A guide wall 28 that rises from the support surface 27 and restricts the swinging range of the chucking plate 81 and a plate locking portion 29 that locks the support plate 82 are formed. The clamp mechanism 80 will be described in detail later.

  The plate locking portion 29 is formed to project outward on a locking wall formed on the outer peripheral side of the guide wall 28. The plate locking portion 29 is locked by the locking protrusions 92 projecting inwardly on the outer peripheral surface of the support plate 82, so that the support plate 82 is locked and the storage portion 25 of the chucking plate 81. It is intended to prevent it from coming off.

  Further, as shown in FIG. 6, the upper cover 5 has locking pieces 30 locked to the engaging convex portions 24 formed on the lower housing 4 on both side surfaces on the front side. The locking piece 30 hangs downward from both side surfaces of the upper cover 5, and a locking hole 30 a that locks the locking protrusion 30 formed on the lower housing 4 at the tip is opened. The locking piece 30 has a slight flexibility at the base end side, and the upper cover 5 causes the back side to contact the back side of the lower housing 4 and tilts the front side with the back side as a fulcrum. As a result, the locking hole 30a is fitted into the engaging convex portion 24 while being bent. Thereby, the upper cover 5 is fastened to the lower housing 4.

  Further, the upper cover 5 is provided with a projecting protrusion 32 constituting the buffer mechanism 40 on the back surface 5a facing the lower housing 4 side. A pair of contact protrusions 32 are formed in the vicinity of the back surface of the upper cover 5 and in the vicinity of both side surfaces corresponding to the support protrusions 22 provided on the lower housing 4, and the upper cover 5 is fastened to the lower housing 4. Then, it comes into contact with the support convex portion 22.

[Fixing part 35]
Further, the upper cover 5 is formed with a hook 37 constituting a fixing portion 35 with the lower housing 4 in the vicinity of the back surface on the back surface 5a. As shown in FIG. 7, the fixing portion 35 fixes the coupling position in the vertical direction between the lower housing 4 and the upper cover 5, and includes a locking projection 36 formed on the lower housing 4, It consists of a hook 37 formed on the cover 5.

  The locking projection 36 is formed on the back wall 4 c of the lower housing 4. The locking projection 36 has a rectangular frame shape and protrudes to the front side, so that the hook 37 can be locked. The locking projections 36 are provided on both sides of the back wall 4c of the lower housing 4 so as to be separated from each other, and the support projections 22 are formed in the vicinity thereof.

  The hook 37 to be locked to the locking convex portion 36 is erected on the back side of the upper cover 5, and has a concave flange portion toward the back side. In addition, the hook 37 is provided on both sides of the upper cover 5 in accordance with the locking convex portion 36, and a contact convex portion 32 is formed in the vicinity thereof.

  The fixing portion 35 is configured such that the hook portion of the hook 37 is locked to the locking convex portion 36 by bringing the back surface side of the upper cover 5 into contact with the back surface side of the lower housing 4. In this state, by tilting the front surface side of the upper cover 5 toward the front surface side of the lower housing 4, the locking holes 30 a of the locking pieces 30 formed in the upper cover 5 are engaged with the engaging protrusions of the lower housing 4. 24 is snap fit. At this time, the fixing portion 35 firmly fixes the lower housing 4 and the upper cover 5 by the hook portion of the hook 37 being locked to the locking protrusion 36, and the lower housing 4 of the upper cover 5. Position in the height direction with respect to.

[Buffer mechanism 40]
Further, the apparatus main body 2 is formed with a buffer mechanism 40 for buffering the apparatus main body 2 and the base unit 8 in the vicinity of the fixing portion 35 by coupling the upper cover 5 to the lower housing 4. Since the shock applied to the apparatus main body 2 and the base unit 8 concentrates on the support convex portion 22 that supports the base unit 8, the buffer mechanism 40 reduces the load concentrated on the support convex portion 22.

  The buffer mechanism 40 includes a support convex portion 22 formed on the back side of the lower housing 4 and a contact convex portion 32 formed on the back side of the upper cover 5. The support convex portion 22 is a substantially cylindrical member erected on the back side of the base unit deck 21 of the lower housing 4, and as shown in FIG. 7, the support convex portion 22 is a base unit 8 described later. Is inserted through a connecting hole 56 formed in the rear side end portion of the first through the insulator 57 attached to the connecting hole 56. Thereby, the support convex part 22 becomes a fulcrum when the base unit 8 is moved up and down by the lifting mechanism 9 by supporting the base unit 8 with the insulator 57 interposed therebetween.

  Further, the abutment convex portion 32 is opposed to the support convex portion 22 by coupling the upper cover 5 to the lower housing 4, and is formed in a cylindrical shape according to the support convex portion 22. Further, the contact protrusion 32 has a cylindrical shape having a diameter larger than that of the support protrusion 22, and comes into contact with the insulator 57 when facing the support protrusion 22 as shown in FIG. 7. Further, the contact convex portion 32 has a concave surface portion 41 having a diameter larger than that of the support convex portion 22 at the center of the upper surface.

  In the buffer mechanism 40, when the upper cover 5 is coupled to the lower housing 4, the support convex portion 22 faces the concave surface portion 41 of the contact convex portion 32, and the insulator 57 contacts the upper surface of the contact convex portion 32. Touched. Thereby, the buffer mechanism 40 can reliably fix the support convex portion 22 that supports the base unit 8 via the insulator 57. In addition, the shock absorbing mechanism 40 makes contact with the support convex portion 22 and the contact convex portion 32 even when a strong impact is applied, so that the load due to the impact is not concentrated on the support convex portion 22. Buffering can be achieved by the insulator 57 in contact with the convex portion 32.

  Here, the buffer mechanism 40 is formed in the vicinity of the fixed portion 35. Therefore, the buffer mechanism 40 increases the height accuracy of the abutment protrusion 32 relative to the support protrusion 22 when the upper cover 5 is coupled to the lower housing 4. That is, as described above, the fixing portion 35 serves as a pivot point of the upper cover 5 when the upper cover 5 is coupled to the lower housing 4, and serves as a reference in the height direction of the upper cover 5 with respect to the lower housing 4. Become. Therefore, the buffer mechanism 40 formed in the vicinity of the fixed portion 35 is formed in the vicinity of the height reference position, and the height accuracy is improved.

  Thereby, the buffer mechanism 40 has a gap between the support convex portion 22 and the contact convex portion 32 or the contact convex portion 32 is supported by the support convex portion before the upper cover 5 is coupled to the lower housing 4. The situation of abutting 22 does not occur. In addition, when the upper cover 5 is coupled to the lower housing 4, the buffer mechanism 40 can abut the abutment convex portion 32 against the insulator 57 and buffer the impact of the apparatus main body 2 via the insulator 57. Further, the shock absorbing mechanism 40 does not concentrate the load due to the impact on the support convex portion 22 by the contact between the support convex portion 22 and the concave surface portion 41 of the contact convex portion 32 even when a strong impact is applied. In addition, the contact protrusion 32 is not separated from the support protrusion 22 by the fixing portion 35.

  Thereby, the buffer mechanism 40 is formed in the vicinity of the fixing portion 35, thereby providing a strength equal to or higher than that of the conventional method of supporting the base unit 8 by screwing, and can buffer the base unit 8. it can.

  On the other hand, as shown in FIG. 7, the hook 37 is pressed against the upper surface of the locking protrusion 36 when the contact protrusion 32 is pressed by the insulator 57. Therefore, the fixing portion 35 can be coupled to the lower housing 4 without causing the upper cover 5 to rattle, and the height accuracy of the contact convex portion 32 can be obtained.

  The fixing portion 35 is provided with a locking projection 36 on the lower housing 4 and a hook 37 on the upper cover 5, and on the contrary, a hook 37 is provided on the lower housing 4 and locked on the upper cover 5. The convex portion 36 may be formed. In addition to the method of locking the hook 37 to the locking projection 36 described above, the fixing portion 35 is provided with a through hole that penetrates the lower housing 4 and the upper cover 5, and a fixing screw is screwed into the through hole. Arbitrary fixing methods such as wearing can be adopted.

  Further, as shown in FIGS. 4 and 6, the fixing portion 35 may be appropriately added with a preliminary fixing piece 43 and a preliminary hook 44. The preliminary fixing pieces 43 are provided on both sides of the back wall 4c of the lower housing 4 and are formed to project toward the front side. The spare hook 44 is formed on the back side of the upper cover 5 so as to correspond to the spare fixing piece 43. By providing the preliminary fixing piece 43 and the preliminary hook 44, the fixing portion 35 can firmly bond the lower housing 4 and the upper cover 5.

  In addition to the fixing portion 35, the apparatus main body 2 may include means such as screws for connecting the back sides of the lower housing 4 and the upper cover 5. 4 and the back side of the upper cover 5 may be combined.

  The fixing portion 35 is provided at a position slightly deviated left and right toward the back side of the lower housing 4 and the upper cover 5 from the position where the support convex portion 22 and the contact convex portion 32 are formed. Yes. As a result, the lower housing 4 and the upper cover 5 have regions where the support protrusions 22 and the contact protrusions 32 are formed further toward the back side than the positions where the support protrusions 22 and the contact protrusions 32 are formed. It is not necessary to ensure, and the enlargement of the apparatus main body 2 in the longitudinal direction can be prevented.

  Therefore, the disk drive device 1 can reduce the depth of the electronic device installed in the vicinity of the TV monitor, such as an optical disk player or an optical disk recorder. As a result, the disk drive device 1 can reduce the depth size of an electronic device that requires a depth space as compared to a thin TV monitor.

<2. Transport mechanism>
Next, the transport mechanism 7 that transports the optical disc 6 across the inside and outside of the apparatus main body 2 will be described. The transport mechanism 7 includes a disk tray 23 on which the optical disk 6 is placed, and a drive gear 18 that transmits the driving force of the drive motor 17 to the disk tray 23.

  As shown in FIG. 3, the disc tray 23 is transported from the insertion / removal port 11 provided on the front surface of the apparatus main body 2 to the inside and outside. The disc tray 23 includes a disc accommodating portion 46 formed of a circular concave portion capable of accommodating an optical disc 6 such as a CD, a DVD, or a BD in a horizontal position, and a central portion of the disc accommodating portion 46 along the tray center. A long hole-like opening 47 is provided so as to extend rearward. The disc housing portion 46 includes a large-diameter portion 46a on which an optical disk having a diameter of 12 cm is placed, and a small-diameter portion 46b having a concave portion formed at the center of the large-diameter portion 46a and on which an optical disc having an diameter of 8 cm is placed. have.

  The opening 47 of the disc tray 23 is opened from the center of the small-diameter portion 46b of the disc accommodating portion 46 to the back side, and extends to the outside of the disc accommodating portion 46 by cutting out a part of the large-diameter portion 46a. Has been. The size and shape of the opening 47 are such that the upper part of the optical pickup mechanism 50 of the base unit 8 can completely enter. A pair of left and right guide rails 48, 48 extending in parallel in the front-rear direction are provided on the left and right side edges of the disc tray 23.

  A tray rack (not shown) that meshes with the drive gear 18 disposed on the support deck 13 extends in the transport direction of the disk tray 23 on the back surface of the disk tray 23. Further, on the back surface of the disk tray 23, the lifting cam 71 is moved in the direction of engagement with the drive gear 18 according to the conveyance of the disk tray 23, or the disk tray 23 is moved with the driving gear 18 according to the slide of the lifting cam 71. A guide cam groove (not shown) for moving in the occlusal direction is provided.

  In this transport mechanism 7, the tray rack is engaged with the drive gear 18, so that the disk tray 23 is transported across the inside and the outside of the apparatus main body 2 under the driving force of the drive motor 17. Further, when the disc tray 23 is transported into the apparatus main body 2, the transport mechanism 7 switches the engagement with the drive gear 18 from the tray rack to the lift cam 71 by the guide cam groove, and stops the transport. Further, when the disc tray 23 is ejected outside the apparatus main body 2, the transport mechanism 7 switches the engagement with the drive gear 18 from the lift cam 71 to the tray rack, and the driving force of the drive motor 17 is transmitted. It is discharged out of the apparatus body 2.

  The disc tray 23 is formed with a notch 45 that avoids the abutting convex portion 32, the locking convex portion 36 of the fixing portion 35, and the hook 37 on the side edge on the back side. As shown in FIG. 8, by forming the notch portion 45, the disk drive device 1 can draw the disk tray 23 to the back side of the device main body 2, and the size of the disk tray 23 and the size of the device main body 2 can be obtained. Can be substantially the same. Therefore, the disk drive apparatus 1 can reduce the depth of the apparatus body 2 with respect to the conveying direction of the disk tray 23 as much as possible.

<3. Base unit>
Next, the base unit 8 on which the optical pickup mechanism 50 for recording and / or reproducing information signals with respect to the optical disk 6 is described. As shown in FIG. 4, the base unit 8 has a substantially rectangular frame body, and the base unit deck 21 is provided with the longitudinal direction of the lower housing 4 provided with the insertion / removal port 11 and the back wall 4c as the longitudinal direction. It is arranged. The base unit 8 is formed with a disk rotation mechanism 51 that rotatably supports the optical disk 6 on one end side in the longitudinal direction, which is the front side of the apparatus main body 2. The base unit 8 is formed with a pickup moving mechanism 53 that moves the optical pickup mechanism 50 from one end side in the longitudinal direction toward the other end side.

  Further, the base unit 8 is formed with a pair of support holes 55 and 55 supported by the elevating support frame 70 of the elevating mechanism 9 at one end side corner portion in the longitudinal direction, and at the other end side corner portion in the longitudinal direction. The connection holes 56 and 56 supported by the supporting convex portion 22 are formed. Each of the support hole 55 and the connection hole 56 is partially opened, and a cylindrical insulator 57 formed by molding an elastic resin is attached from the open end.

  A support pin 75 erected on the elevating support frame 70 is inserted into the support hole 55 in which the insulator 57 is mounted. Thereby, the base unit 8 is supported by the elevating support frame 70 at one end side in the longitudinal direction. In addition, the support convex portion 22 formed on the back surface side of the lower housing 4 is inserted into the connection hole 56 in which the insulator 57 is mounted. Thereby, the base unit 8 is supported by the lower housing 4 at the other end in the longitudinal direction.

  When the elevating support frame 70 is moved up and down by the elevating cam 71, the base unit 8 is moved up and down at one end in the longitudinal direction with the support convex portion 22 supporting the other end in the longitudinal direction as a fulcrum. Therefore, the optical pickup mechanism 50 of the base unit 8 and the disk rotation mechanism 51 provided on one end side in the longitudinal direction record information signals on the optical disk 6 by the optical pickup mechanism 50 in accordance with the elevation of the base unit 8. It moves up and down between a recording / reproducing position where reproduction is performed and a standby position where it is retracted from the conveyance area of the optical disk.

  As shown in FIG. 8, the optical pickup mechanism 50 condenses the light beam emitted from the semiconductor laser serving as the light source by the objective lens and irradiates the signal recording surface of the optical disc 6. It has a pickup base 50a on which an optical block for detecting the reflected return light beam by a photodetector made up of a light receiving element or the like is formed, and signals are written to or read from the optical disc 6.

  The optical pickup mechanism 50 has an objective lens drive mechanism such as a biaxial actuator that drives the objective lens to move in the optical axis direction (focusing direction) and in a direction orthogonal to the recording track of the optical disk (tracking direction). Based on the detection signal from the optical disc 6 detected by the photodetector, the objective lens is focused on the signal recording surface of the optical disc 6 while the objective lens is displaced in the focusing direction and the tracking direction by the biaxial actuator. Drive control such as a focus servo and a tracking servo for causing the spot of the light beam condensed by the objective lens to follow the recording track is performed. As the objective lens driving mechanism, in addition to such focusing control and tracking control, the signal recording of the optical disc 6 is performed so that the light beam condensed by the objective lens is irradiated perpendicularly to the signal recording surface of the optical disc 6. A triaxial actuator that can adjust the inclination (skew) of the objective lens with respect to the surface may be used.

  The optical pickup mechanism 50 is movable in the radial direction of the optical disc 6 by the pickup base 50 a being supported by the pickup moving mechanism 53.

  The pickup moving mechanism 53 includes a pair of guide shafts 60 and 61 that support the pickup base 50 a so as to be slidable in the radial direction of the optical disc 6, and the pickup base 50 a that is supported by the pair of guide shafts 60 and 61. And a displacement drive mechanism 62 for driving the displacement in the direction.

  One of the pair of guide shafts 60 and 61 is inserted into a guide hole formed on one side edge of the pickup base 50a, and the other is sandwiched in a guide groove formed on the other side edge of the pickup base 50a. Thus, the pickup base 50a is slidably supported. Further, the pair of guide shafts 60 and 61 are arranged so as to be parallel to each other along the longitudinal direction of the base unit 8, and guide the pickup base 50 a over the inner and outer circumferences of the optical disk 6.

  The displacement drive mechanism 62 converts the rotational drive of the drive motor attached to the base unit 8 into linear drive via a gear or a rack, and moves the pickup base 50a along the pair of guide shafts 60, 61, that is, the optical disc 6. For example, a stepping motor having a lead screw is used.

  The disk rotation mechanism 51 includes a disk table 65 on which the optical disk 6 is placed, and a flat spindle motor 66 that rotates the optical disk 6 integrally with the disk table 65.

  The disc table 65 is formed with a support surface portion 65 a that supports the peripheral edge of the center hole 6 a of the optical disc 6 and an engagement protrusion 65 b that is engaged with the center hole 6 a of the optical disc 6. The engaging protrusion 65b is formed with a tapered surface whose diameter increases from the tip surface toward the support surface 65a, and can be mounted while centering the optical disk 6. Further, the engagement protrusion 65b is formed with a fitting hole 68 on the front end surface for fitting with a chucking plate 81 of a clamp mechanism 80 described later. The fitting hole 68 is formed with a guide surface 69 around which a fitting pin 89 protruding from the chucking plate 81 is drawn. The guide surface 69 is formed as a tapered surface or a curved surface whose diameter increases upward from the tip of the fitting hole 68, and the fitting pin 89 is brought into the fitting hole 68 by the proximity of the chucking plate 81. Withdrawing, the chucking plate 81 is fitted into the disc table 65. Thereby, the chucking plate 81 is positioned with respect to the disk table 65 at the time of disk chucking.

  The spindle motor 66 is mounted on a mounting substrate attached to one end side of the base unit 8, and a disk table 65 is attached to the spindle shaft.

  When the optical disk 6 is transported into and out of the apparatus main body 2, the disk rotating mechanism 51 is retracted from the transport area of the optical disk 6 by the base unit 8 being lowered to the standby position. When the optical disk 6 is conveyed into the apparatus main body 2 and the base unit 8 is raised to the recording / reproducing position, the disk rotation mechanism 51 causes the disk table 65 together with the chucking plate 81 to be described later to have a center hole 6a of the optical disk 6. Is held in a freely rotatable manner. Thereafter, the spindle motor 66 is rotationally driven in accordance with a recording or reproduction instruction, and the optical disk 6 is controlled at a predetermined rotational speed such as CLV or CAV.

<4. Lifting mechanism>
Next, an elevating mechanism 9 that elevates the base unit 8 between the recording / reproducing position and the standby position will be described. The elevating mechanism 9 includes an elevating support frame 70 that supports one end side of the base unit 8, and an elevating cam 71 that is connected to the drive gear 18 and raises and lowers the elevating support frame 70 according to a slide.

  The elevating support frame 70 includes a pair of support arm portions 72, 72 disposed on the base unit deck 21 along both side walls 4 a, 4 b of the lower housing 4, and tips of the pair of support arm portions 72, 72. And a connecting arm portion 73 that engages the lifting cam 71.

  The support arm portion 72 is provided with a pivot shaft portion 72a projecting from the distal end portion thereof so as to be engaged with the bearing recess 15 formed in the both side walls 4a and 4b of the lower housing 4. Thereby, the raising / lowering support frame 70 can rotate the connection arm part 73 side by using the rotation shaft part 72a as a fulcrum. Further, the support arm portion 72 is provided with a support pin 75 protruding from a support hole 55 formed in one end side corner portion of the base unit 8. The support pin 75 is inserted through the hollow portion of the insulator 57 after the insulator 57 is mounted in the support hole 55. Accordingly, the lifting support frame 70 supports one end side of the base unit 8.

  The connecting arm 73 is provided with a cam pin 76 that is engaged with a cam groove formed in the elevating cam 71. Therefore, the lift support frame 70 is lifted and lowered by the cam pins 76 moving in the cam grooves in accordance with the movement of the lift cam 71.

  The elevating cam 71 is engaged with the drive gear 18 to slide up and down on the support deck 13 in the arrow Y direction and the counter arrow Y direction in FIG. 4 orthogonal to the conveying direction of the disk tray 23. The support frame 70 is raised and lowered. Thereby, the raising / lowering cam 71 can raise / lower the base unit 8 supported by the raising / lowering support frame 70 between the recording / reproducing position and the standby position.

  The elevating cam 71 includes a main surface portion that slides on the support deck 13 and a side surface portion that hangs downward from the main surface portion along the wall surface of the support deck 13. The main surface portion is formed in a substantially rectangular plate shape, and a cam rack engaged with the drive gear 18 is formed.

  The cam rack is engaged with the drive gear 18 to slide the elevating cam 71 in the direction of arrow Y in FIG. 4 which is orthogonal to the direction of arrow X in FIG. The cam rack is connected to the drive gear 18 while the base unit 8 is moved up and down between the recording / reproducing position and the standby position via the elevating support frame 70 and while the information signal is recorded / reproduced with respect to the optical disc 6. After the base unit 8 is lowered to the standby state, the occlusion with the drive gear 18 is released when the disc tray 23 is conveyed.

  The elevating cam 71 is formed with a cam groove through which a cam pin 76 projecting from the elevating support frame 70 is inserted in the side surface portion. The cam groove moves the base unit 8 up and down between the recording / reproducing position and the standby position by raising and lowering the raising and lowering support frame 70. The cam groove has an inclined surface extending in the vertical direction and an upper side continuous from the end of the inclined surface. And a lower horizontal plane.

  The elevating cam 71 slides between the left side wall 4a side and the right side wall 4b, thereby moving the cam pin 76 engaged with the cam groove between the lower horizontal plane and the upper horizontal plane via the inclined surface. Let Thereby, the elevating support frame 70 can elevate one end side of the base unit 8 between the recording / reproducing position and the standby position. At this time, the other end of the base unit 8 is supported for rotation by the support convex portion 22 protruding from the lower housing 4.

<5. Clamp mechanism>
Next, the clamp mechanism 80 that clamps the optical disk 6 together with the disk table 65 in a rotatable manner will be described. As shown in FIGS. 9 and 10, the clamp mechanism 80 is housed in the housing portion 25 of the upper cover 5, and is attached to the upper cover 5 and a chucking plate 81 that rotatably clamps the optical disk 6 together with the disk table 65. And a support plate 82 that supports the chucking plate 81 in the storage unit 25.

  Then, when the chucking plate 81 is stored in the storage unit 25, the clamp mechanism 80 is inserted into the opening 26 formed in the storage unit 25 and is magnetically attracted to the disk table 65 that is raised to the recording / reproducing position. Is done. Thereby, the clamp mechanism 80 clamps the optical disc 6 together with the disc table 65 so as to be rotatable.

  As shown in FIGS. 11A and 11B, the chucking plate 81 includes a clamp plate 83 formed in a substantially disc shape, a circular magnet 84 held in the clamp plate 83, and a magnet 84. And a support plate 85 that supports the inside of the clamp plate 83.

  The clamp plate 83 is molded using an engineering plastic such as polyacetal (POM). The clamp plate 83 is formed on a circular convex surface portion 87 that protrudes toward the lower housing 4 from the opening 26 formed in the storage portion 25, and on the outer periphery of the convex surface portion 87, and on the support surface 27 of the storage portion 25. A flange 88 to be supported and a fitting pin 89 erected in the center of the convex portion 87 and fitted into the fitting hole 68 of the disk table 65, and protruded on the opposite side of the fitting pin 89 to support A centering pin 90 that engages with the restriction portion 93 of the plate 82 and a locking claw 91 that locks the support plate 85 are formed.

  As shown in FIG. 10, the convex surface portion 87 is formed in a circular shape and protrudes toward the lower housing 4 from the opening portion 26, thereby sandwiching the peripheral edge of the center hole 6 a of the optical disk 6 together with the disk table 65. Further, the convex surface portion 87 is accommodated between the support plate 85 and an iron plate provided on the disk table 65 and a magnet 84 that performs magnetic attraction.

  The flange portion 88 is formed on the outer periphery of the convex portion 87 and is supported by the support surface 27 of the storage portion 25, thereby preventing the chucking plate 81 from coming off from the opening portion 26. The flange portion 88 abuts against the guide wall 28 of the storage portion 25 when the chucking plate 81 swings in the storage portion 25. Accordingly, the swinging range of the chucking plate 81 in the storage unit 25 is restricted.

  The fitting pin 89 integrally molded at the center of the convex portion 87 is used to position the chucking plate 81 with respect to the disc table 65 by fitting into the fitting hole 68 of the disc table 65. When the disc table 65 is raised to the recording / reproducing position, the fitting pin 89 is guided by the guide surface 69 formed around the fitting hole 68 and pulled into the fitting hole 68. Thereby, the chucking plate 81 is positioned with respect to the disk table 65 at the time of disk chucking.

  The centering pin 90 projecting from the upper surface side of the convex surface portion 87 opposite to the fitting pin 89 of the clamp plate 83 is engaged with a restricting portion 93 provided on the support plate 82, so that the chucking plate The swing range of 81 is restricted to a range where the fitting pin 89 and the fitting hole 68 or the guide surface 69 face each other. The centering pin 90 is integrally molded toward the upper surface side of the convex surface portion 87 and protrudes upward from the protrusion hole 85 b of the support plate 85.

  The support plate 85 supports the magnet 84 by being attached to the upper surface side of the convex surface portion 87, and as shown in FIG. 11A, a locking claw 91 protruding from the upper surface of the convex surface portion 87 is provided. An insertion hole 85a for insertion is formed. The support plate 85 is attached to the upper surface of the convex portion 87 by being locked by the locking claw 91 inserted through the insertion hole 85a. Further, the support plate 85 is formed with a projecting hole 85b for allowing the centering pin 90 protruding from the clamp plate 83 to face the support plate 82 side.

  As shown in FIGS. 12A and 12B, the support plate 82 that supports the chucking plate 81 in the storage unit 25 is formed in a disk shape, and is formed on the outer cover on the upper cover 5. A locking ridge 92 that is locked to the plate locking portion 29 is formed, and a regulating portion 93 that regulates the swing range of the chucking plate 81 is formed on the lower surface portion facing the lower housing 4 side. Yes.

  The locking ridge 92 is intermittently formed inside the outer peripheral surface of the support plate 82. Then, the support plate 82 is placed on the storage portion 25 after aligning the portion where the locking ridge 92 is not formed with the plate locking portion 29, and rotating in one direction. It wraps around the lower part of the plate latching part 29. In addition, the plate latching | locking part 29 is formed with the rotation stopper which the front-end | tip part of the rotation direction of the latching protrusion 92 contact | abuts to the edge part of one direction. The support plate 82 is locked to the storage portion 25 by rotating until the locking ridge 92 abuts against the rotation stopper.

  The restricting portion 93 is formed substantially at the center of the support plate 82, and is substantially opposed to the centering pin 90 of the chucking plate 81 when the support plate 82 is locked to the storage portion 25. The restricting portion 93 includes a circular flat surface portion 94 provided in the center, and a centering wall 95 formed so as to rise around the flat surface portion 94.

  The centering wall 95 is formed as a tapered surface or a curved surface that increases in diameter toward the distal end side, and guides the chucking plate 81 toward the flat surface portion 94 by contacting the centering pin 90.

  The restricting portion 93 is configured so that the chucking plate 81 is moved to the support plate 82 side in a state where the disk table 65 is lowered to the standby position and the chucking plate 81 is swingable without being fitted to the disk table 65. When swinging, the centering pin 90 comes into contact with the centering wall 95. Then, as shown in FIG. 13, the restricting portion 93 attempts to center the chucking plate 81 by guiding the centering pin 90 toward the flat portion 94 side by the centering wall 95. Therefore, the chucking plate 81 always has the fitting pin 89 opposed to the fitting hole 68 or the guide surface 69 of the disc table 65. As a result, the chucking plate 81 can always be fitted into the fitting hole 68 by the fitting pin 89 being guided by the guide surface 69 when the disc table 65 is raised to the recording / reproducing position.

[Dimensions of each part]
Here, if the protrusion height is increased, the fitting pin 89 hangs down from the opening 26 onto the transport area of the optical disk 6 and therefore cannot be formed high in order to avoid interference with the optical disk 6. Accordingly, the height of the guide surface 69 cannot be increased if the fitting depth between the fitting pin 89 and the fitting hole 68 is secured. If the angle of the guide surface 69 is reduced in a state where the height of the guide surface 69 cannot be sufficiently secured, the guide width increases, but the pulling force of the fitting pin 89 becomes weak, so that a certain pulling force is secured. Therefore, it is necessary to increase the angle, and as a result, it is not possible to ensure a wide width of the guide surface 69. For this reason, when the swinging range of the chucking plate 81 is wide, the fitting pin 89 does not face the guide surface 69, and there is a possibility that a chucking mistake in which the fitting pin 89 is not inserted into the fitting hole 68 may occur.

  Therefore, in the disk drive device 1, the dimensions of the clamp mechanism 80 and the storage unit 25 that stores the clamp mechanism 80 are defined as follows.

  As shown in FIG. 9, in the state where the chucking plate 81 is in a position where the fitting pin 89 and the fitting hole 68 face each other, the support surface 27 of the storage portion 25 is the end surface of the flange portion 88 of the chucking plate 81. The surplus distance (B) from the guide wall 28 is shorter than the swing range (A) in which the fitting pin 89 of the chucking plate 81 can face the guide surface 69.

  Therefore, even when the chucking plate 81 swings in the left-right direction in FIG. 9 with the flange portion 88 supported by the support surface 27, the fitting pin 89 can be opposed to the guide surface 69. Yes. Therefore, when the disc table 65 is moved up to the recording / reproducing position, the chucking plate 81 is reliably fitted into the fitting hole 68 with the fitting pin 89 guided by the guide surface 69.

  Further, as shown in FIG. 10, the guide wall 28 of the storage unit 25 has the end face of the flange portion 88 of the chucking plate 81 in a state where the chucking plate 81 is engaged with the disc table 65 raised to the recording / reproducing position. Thus, when at least the base unit 8 is raised to the recording / reproducing position and the chucking plate 81 is engaged with the disc table 65, a distance (C ′) equal to or greater than the assumed movable distance (C) at which the outer periphery of the flange portion 88 is located. It is separated.

  As described above, the base unit 8 has the other end in the longitudinal direction supported by the support convex portion 22 projecting from the lower housing 4 via the insulator 57 and the one end in the longitudinal direction supported by the lifting support frame 70. The lift support frame 70 is lifted and lowered according to the slide of the lift cam 71, and is lifted from the standby position to the recording / reproducing position. That is, the base unit 8 is moved up and down by turning one end side with the other end side supported by the support convex portion 22 via the insulator 57 as a fulcrum, and the disk table 65 draws a turning locus. . Further, when the optical disk 6 is rotated, the chucking plate 81 also swings. In addition, it is necessary to allow for errors and assembly errors of each component.

  Therefore, when the disk table 65 is raised to the recording / reproducing position, the disc table 65 may be displaced in the left-right direction in FIG. 10 from the designed fitting position. Therefore, the guide wall 28 has a distance (C ′) that is equal to or greater than the assumed movable distance (C) at which the outer periphery of the flange portion 88 can be located when the chucking plate 81 is engaged with the disc table 65 raised to the recording / reproducing position. ). Thereby, even when the chucking plate 81 is rotated together with the optical disc 6, the outer periphery of the flange portion 88 is prevented from slidingly contacting the guide wall 28.

  The guide wall 28 has a height (D) at which the flange portion 88 of the chucking plate 81 fitted to the disc table 65 does not come into contact with the support surface 27. At a height lower than the height (D), By contacting the flange portion 88, the swinging range of the chucking plate 81 is restricted to a range where the fitting pin 89 faces the fitting hole 68 or the guide surface 69.

  That is, the guide wall 28 is located at the height of the flange portion 88 of the chucking plate 81 fitted to the disk table 65 raised to the recording / reproducing position, even when the chucking plate 81 swings as the optical disk 6 rotates. The height (D) at which the flange portion 88 does not contact the support surface 27 is required.

  On the other hand, at a height lower than the height (D), the swinging range of the chucking plate 81 that is not fitted to the disc table 65 needs to be restricted to a range where the fitting pin 89 faces at least the guide surface 69. There is. For this reason, the guide wall 28 is separated from the flange portion 88 by a distance (C ′) that is equal to or greater than a predetermined distance (C) at the height (D), while at a position lower than the height (D). The part 88 can be brought into contact, and thereby the swinging range of the chucking plate 81 is restricted.

  Further, the restricting portion 93 has a centering wall extending from the outer periphery of the tip of the centering pin 90 of the chucking plate 81 in a state in which the flat portion 94 is in a position where the chucking plate 81 and the fitting hole 89 face each other. The centering wall 95 has a surplus distance (E) equal to or less than the surplus distance (B) to the base end of 95, and the centering wall 95 is at most the distance (C) from the centering pin 90 of the chucking plate 81 fitted to the disc table 65. ) Separated by a shorter distance (C ″).

  With such a configuration, when the chucking plate 81 is not fitted to the disc table 65 and swings upward from the recording / reproducing position, the centering pin 90 abuts against the centering wall 95, and the flat portion 94. Guided to the side. In the flat portion 94, the surplus distance (E) from the outer periphery of the tip of the centering pin 90 to the centering wall 95 is such that the chucking plate 81 is in a position where the fitting pin 89 and the fitting hole 68 face each other. Shorter than (B). Therefore, when the centering pin 90 is guided to the flat portion 94, the chucking plate 81 is guided to a position where the fitting pin 89 faces the guide surface 69 or the fitting hole 68. Therefore, when the disc table 65 is moved up to the recording / reproducing position, the chucking plate 81 is reliably fitted into the fitting hole 68 with the fitting pin 89 guided by the guide surface 69.

  The restricting portion 93 is formed at a sufficient distance (F) where the flat portion 94 does not come into contact with the centering pin 90 of the chucking plate 81 fitted to the disc table 65. That is, the flat portion 94 is between the centering pin 90 of the chucking plate 81 fitted to the disc table 65 raised to the recording / reproducing position, even when the chucking plate 81 swings as the optical disc 6 rotates. The height (F) at which the centering pin 90 does not contact the flat surface portion 94 is ensured.

  In this way, the clamp mechanism 80 is guided to a position where the fitting pin 89 faces the fitting hole 68 or the guide surface 69 when the chucking plate 81 swings to any position in the storage portion 25. The Therefore, the chucking plate 81 is securely fitted to the disc table 65. As a result, even when the chucking plate 81 uses a magnet that is magnetically attracted to the disk table 65 and has a relatively weak magnetic force, a chucking error to the disk table 65 can be prevented.

[Other embodiments]
Further, in the disk drive device 1, in addition to providing the restriction portion 93 on the support plate 82, as shown in FIGS. 14 and 15, a restriction portion 96 may be formed in the storage portion 97 of the upper cover 5. In the following description, the same components as those of the disk drive device 1 described above are denoted by the same reference numerals and their details are omitted.

  In the present embodiment, the storage portion 97 is provided with an opening 26 that allows the convex surface portion 87 of the chucking plate 81 to face the lower housing 4, and the chucking provided around the opening 26, similar to the storage portion 25. A support surface 27 that supports the flange portion 88 of the plate 81, and a guide wall 28 that rises from the outer edge portion of the support surface 27 and increases in diameter upward. Further, in the storage portion 97, a regulating portion 96 including a centering wall 98 and a flat surface portion 99 is integrally extended from the upper end of the guide wall 28.

  The support surface 27 and the guide wall 28 have the dimensions as described above. Further, as shown in FIG. 15, the guide wall 28 has a sufficient height (D) so that the flange portion 88 of the chucking plate 81 fitted to the disc table 65 does not slide on the support surface 27. A centering wall 98 is extended through a vertical wall that is about the thickness of the flange portion 88 from the height.

  The centering wall 98 corresponds to the centering wall 95 of the restricting portion 93 described above. As with the centering wall 95, the centering wall 98 is separated from the outer periphery of the flange portion 88 of the chucking plate 81 fitted with the disc table 65 by a distance (C ″) equal to or less than the distance (C). The diameter is reduced upward.

  Further, the centering wall 98 is placed between the flange portion 88 of the chucking plate 81 fitted to the disc table 65 raised to the recording / reproducing position and the flat portion 99 even if the chucking plate 81 swings. It has a sufficient height (F) that does not touch.

  The flat surface portion 99 has the above surplus from the outer periphery of the flange portion 88 of the chucking plate 81 to the proximal end of the centering wall 95 in a state where the chucking plate 81 is in a position where the fitting pin 89 and the fitting hole 68 are opposed to each other. The surplus distance (E) is equal to or less than the distance (B).

  With such a configuration, when the chucking plate 81 is not fitted to the disc table 65 and swings upward from the recording / reproducing position, the flange portion 88 abuts on the centering wall 98, and the flat portion 99. Guided to. In the flat surface portion 99, the surplus distance (E) from the outer periphery of the flange portion 88 to the centering wall 98 is such that the chucking plate 81 is in a position where the fitting pin 89 and the fitting hole 68 face each other. Shorter than B). Therefore, when the flange portion 88 is guided to the flat portion 99, the chucking plate 81 is guided to a position where the fitting pin 89 faces the guide surface 69 or the fitting hole 68. Therefore, when the disc table 65 is moved up to the recording / reproducing position, the chucking plate 81 is reliably fitted into the fitting hole 68 with the fitting pin 89 guided by the guide surface 69.

  Also in this embodiment, when the chucking plate 81 is not fitted to the disc table 65 and swings downward from the recording / reproducing position, as described above, the guide wall 28 and the support surface 27, the fitting pin 89 is guided to a position facing the guide surface 69 or the fitting hole 68.

  In the present embodiment, the chucking plate 81 does not have to form the centering pin 90.

DESCRIPTION OF SYMBOLS 1 Disk drive apparatus, 2 Apparatus main body, 4 Lower housing | casing, 5 Upper cover, 6 Optical disk, 7 Conveyance mechanism, 8 Base unit, 9 Lifting mechanism, 22 Support convex part, 23 Disc tray, 24 Engagement convex part, 25 Storage Part, 26 opening part, 27 support surface, 28 guide wall, 30 locking piece, 32 abutting convex part, 35 fixing part, 36 locking convex part, 37 hook, 40 buffer mechanism, 41 concave surface part, 45 notch part , 50 Optical pickup mechanism, 51 Disk rotation mechanism, 55 Support hole, 56 Connection hole, 57 Insulator, 65 Disk table, 66 Spindle motor, 68 Fitting hole, 69 Guide surface, 70 Lift support frame, 71 Lift cam, 80 Clamp Mechanism, 81 Chucking plate, 82 Support plate, 83 Clamp plate, 84 Magnet, 85 Support plate, 87 convex portion, 88 flange portion, 89 fitting pin, 90 centering pin, 93 restricting portion, 94 flat portion, 95 centering wall, 96 restricting portion, 97 storage portion, 98 centering wall, 99 flat portion

Claims (5)

An apparatus body configured by abutting and coupling a lower housing and an upper cover;
A transport mechanism for transporting a recording medium across the inside and outside of the apparatus main body;
A base unit provided with a recording / reproducing mechanism for recording and / or reproducing information signals with respect to the recording medium;
An elevating mechanism for elevating the base unit between a recording / reproducing position where the recording / reproducing mechanism records and / or reproduces the recording medium and a standby position where the base unit is retracted from a conveyance area of the recording medium;
The apparatus main body is formed in the lower housing, inserted into a connecting portion provided at an end portion of the base unit, formed on a support convex portion that supports lifting of the base unit, and the upper cover, A contact convex portion that contacts the support convex portion, the contact convex portion is fitted to the connecting portion, and a buffer mechanism that contacts the insulator inserted through the support convex portion is formed,
The said buffer mechanism is a drive apparatus provided in the fixed part vicinity which fixes the coupling position of the up-down direction of the said upper cover and the said lower housing | casing.   The fixing portion includes a locking projection provided on one side wall of the upper cover and the lower housing, and a hook portion provided on the other side wall and locked to the locking projection. Item 2. The drive device according to Item 1.   3. The drive device according to claim 1, wherein the device main body is snap-fit fastened to the upper cover and the lower housing at one end, and the fixing portion is provided at the other end.   The drive device according to claim 3, wherein the device main body performs coupling on the other end side of the upper cover and the lower housing by the fixing portion. The transport mechanism includes a disc tray on which the disc-shaped recording medium is placed, and a transport mechanism that transports the disc tray over the inside and outside of the apparatus body,
2. The drive device according to claim 1, wherein the disc tray is formed with a notch at an end portion for avoiding interference with the abutting convex portion.

Images