JP4353074B2 - Disk unit - Google Patents

Description

  The present invention relates to a disk device, and more particularly to a disk device including a member whose operation is controlled by a slider that performs a linear reciprocating motion in a lateral width direction on a resin chassis.

  This type of disk device has been well known (see, for example, Patent Document 1). In this type of disk device, generally, a slider is integrally provided with a rack of a pinion rack mechanism, and rotational movement of the pinion is prevented. It is converted into a linear movement of the rack so that the slider reciprocates left and right. In addition, in this disk device, a turntable and an optical pickup are mounted on a movable frame attached to the chassis so as to be movable up and down, and when the movable frame rises, the disk mounted on the turntable is chucked by a chucking mechanism. When the movable frame is lowered, the chucking state is released and the disc can be removed from the turntable.

  In the disk device described in Patent Document 1, the cam member (corresponding to the slider) reciprocates in the facing space of the left and right wall portions raised at both ends in the left-right width direction of the chassis. Therefore, a situation in which one end portion of the cam member protrudes outside the one end edge in the left-right direction of the chassis does not occur.

  However, there are restrictions on the layout and external size of the mechanical parts of the disk device itself, and the design and external size of the disk device due to demands for housing the disk device together with other types of devices and parts in the outer shell. In such a case, one end of the slider's moving range that reciprocates in the left-right direction exceeds the limit position on one side of the slider, and one end of the slider exceeds the left-right edge of the chassis. In some cases, it is necessary to set the protruding position protruding outside. Such a disk device will now be described with reference to FIGS.

  5 is a schematic perspective view showing the appearance of the disk device, FIG. 6 is a plan view showing the schematic configuration of the disk device, FIG. 7 is an enlarged view of the main part of FIG. 6, and FIG. 8 is a side view of the main part of FIG. FIG. 9 and FIG. 9 are cross-sectional views taken along the line IX-IX in FIG.

  In FIG. 5, reference numeral 1 denotes a resin chassis. A disk tray 2 and a disk chucking mechanism 3 for loading and unloading disks (not shown) are attached to the chassis 1, and the horizontal width of the chassis 1 is also shown. A mounting bracket 4 for mounting the disk device on a mounting substrate or the like is integrally formed on an edge in the direction.

  As shown in FIG. 6, the chassis 1 is integrally provided with a support base 5 that is horizontally mounted over the entire width of the front end portion, and the slider 6 is attached to the support base 5 as shown by an arrow A. A pinion 7 attached to the chassis 1 is disposed in the vicinity of the rear side of the support base 5 so as to be reciprocally movable, and a rack 61 integrally formed with the slider 6 meshes with the pinion 7. Thus, the forward / reverse rotational motion indicated by the arrow a of the pinion 7 is converted into the reciprocating linear motion of the rack 61. 7-9, the guide rib 8 extending in the left-right direction A is provided in a state where the reciprocating movement of the slider 6 in the left-right direction A protrudes from the upper surface of the support base 5. The slider 6 is guided by a guide groove 62 that is slidably fitted to the guide rib 8. Then, the fitting position of the guide groove 62 with respect to the guide rib 8 is located on the back portion closest to the rack 61 to increase the reliability of the engagement of the rack 61 with the pinion 6 and the guide groove 62 is connected to the rack of the slider 6. It is formed over the entire width of the forming portion 63.

  On the other hand, a movable frame 9 is attached to the chassis 1 as shown in FIG. The movable frame 9 has a rear end portion rotatably attached to the chassis 1 and is configured such that a front end portion thereof moves up and down around a portion indicated by a one-dot chain line a. The movable frame 9 includes a turntable 91 on which a disk (not shown) is mounted, an optical pickup 92 that optically scans the recording surface of the disk, and a gear train 93 that transmits rotation to the pinion 7 described above. Is attached. When the movable frame 9 is raised, the disk mounted on the turntable 91 is chucked by the cooperation of the disk chucking mechanism 3 and the turntable 91 shown in FIG. When the movable frame 9 is held so as to be lowered, the chucking is released and the disk can be removed from the turntable 91. The feeding of the disc to the turntable 91 and the ejection of the disc from the turntable 91 are performed through the loading / unloading operation of the disc tray 2 shown in FIG. 5, and the optical recording of the disc by the optical pickup 92 is optically scanned. Is performed when the turntable 91 is rotating in the disk chucking state.

  The above-described raising / lowering operation of the movable frame 9 is performed through the reciprocating movement of the slider 6 in the left-right direction. That is, as shown in FIG. 6, the slider 6 is formed as a cam slider having a cam mechanism including a cam groove (not shown in the figure) and a cam protrusion 64 guided in the cam groove. 64 projects from the front end of the movable frame 9.

  In this disk device, the pinion 7 is located in the vicinity of the inside of the left-right width direction end edge 12 of the chassis 1. The pinion 7 is provided at this position because the mounting space for the movable frame 9, the mounting space for the gear train 93, and the installation space for housing the disk device in a casing as an outer shell are as small as possible. This is because of the relationship with various factors such as the necessity of shortening the lateral width of the chassis 1 as much as possible.

  As a result of positioning the position of the pinion 7 in the vicinity of the inside of the left and right width direction end edge 12 of the chassis 1 as described above, the one side limit position of the moving range of the slider 6 reciprocating in the left and right direction is As shown in FIGS. 6 and 7 to 9, the end portion 65 of the slider 6 has to be set at a protruding position that protrudes beyond the one end edge 12 in the left-right direction of the chassis 1. Therefore, when the slider 6 moves to the one side limit position, one end portion 65 of the slider 6 protrudes beyond the one end edge 12 in the left-right direction of the chassis 1 as shown in FIG. On the other hand, when the slider 6 moves to the other side limit position, although not shown, the one end portion 65 retracts inside the one end edge 12 in the left-right direction of the chassis 1. When the slider 6 moves to the one-side limit position, a mechanism (not shown) operates to move the rack 61 in the direction of the arrow A1 to a position beyond the pinion 7 and away from the pinion 7, and the pinion 7 is idling. The optical pickup 92 moves in the radial direction of the disk (arrow B in FIG. 6) (recording / reproducing mode), but when the slider 6 moves to the other limit position, it is not shown. This mechanism is actuated so that the rack 61 moves in the direction of arrow A2 to a position where the rack 61 moves away from the inside of the pinion 7 (tray open mode).

  Further, in the illustrated disk apparatus, the mounting bracket 4 of the chassis 1 is provided at the end of the support base 5 as shown in FIG. 5, and this bracket 4 is screwed to the bottom plate of the housing. The disk device is attached to the housing.

As another conventional example, when a lateral external force is applied to the disc tray, the guide for the disc tray to guide the loading / unloading operation is removed to prevent the stability of the loading / unloading operation of the disc tray from being impaired. The technique which makes this content is proposed (for example, refer patent document 2 and patent document 3).
JP 2003-317357 A JP 2004-227655 A JP 2003-281868 A

  However, as in the disk device described with reference to FIGS. 5 to 9, the one-side limit position of the moving range of the slider 6 as a cam slider is such that one end portion 65 of the slider 6 is one end edge 12 in the left-right width direction of the chassis 1. If the projecting position is set so as to project outward beyond the outer edge of the chassis 1, the operator or operator can move beyond the one edge 12 in the left-right width direction of the chassis 1 to the outside during the assembly process or other handling of the disk device. A situation in which one end of the projecting slider 6 is accidentally or mistakenly touched with a handling or emergency member and the slider 6 is pushed toward the other side limit position as shown by an arrow F in FIG. It was found to be obtained. In particular, when such an inadvertent pushing operation is performed on the slider 6 at the assembly stage before the disc tray 2 is assembled, the rack 61 rotates the pinion 7 by the pushing operation of the slider 6, so-called a gear shift. As a result, each gear of the gear train 93 meshed with the pinion 7 is rotated, so that the initial setting position of the optical pickup 92 after the disk tray 2 is assembled is shifted from the normal position, or other mechanisms. In some cases, the proper operation timing may be impaired, causing malfunction.

  Therefore, in the present invention, the limit position on one side of the moving range of the slider that reciprocates in the left-right direction is defined as a protruding position where one end of the slider protrudes beyond the one end edge in the left-right width direction of the chassis. Even in such a case, by making it possible to prevent a situation in which the slider positioned at the one-side limit position is accidentally pushed and causes a gear shift, the above-described malfunction may occur. The object is to provide no disk device.

  In particular, an object of the present invention is to provide a disk device that does not cause the above-described malfunctions by adding extremely simple measures without adding parts.

  In the disk device according to the present invention, the support base of the resin chassis having the support base is provided with guide ribs extending in the left-right width direction of the support base, and the rack for converting the forward / reverse rotational motion of the pinion into the reciprocating linear motion is integrated. Is provided with a guide groove slidably fitted to the guide rib. And the one side limit position of the moving range of the slider that moves along the linear motion path by the guide action by the guide groove and the guide rib is such that one end of the slider exceeds the one end edge in the left-right width direction of the chassis. And when one end of the slider projects beyond the one edge in the left-right width direction of the chassis and projects to the outside, the slider is positioned at the other limit position of the moving range. An external force receiving member that receives a pressing external force in a direction to be pressed toward the slider and is difficult to be transmitted to the slider is integrally formed on the chassis so as to protrude from one edge in the left-right width direction.

  With this configuration, an operator or operator inadvertently pushes in one end of the slider that protrudes beyond one edge of the chassis in the width direction in the assembly process or other handling of the disk device. The external force receiving member receives the force when trying to touch it by mistake or trying to touch it with a member for handling or emergency, that is, the force to push the slider toward the limit position on the other side. Therefore, the situation that the slider is accidentally pushed cannot occur. As a result, it is difficult to cause a situation in which an unexpected operation of the slider causes a malfunction.

  In the present invention, the guide rib includes an extended rib portion that extends beyond one edge of the chassis in the left-right width direction, and the extended rib portion forms a part of the external force receiving member. It is desirable. According to this, not only the force to push the slider toward the limit position on the other side is received by the external force receiving member and the slider does not easily reach the slider, but also the one end of the slider is one end edge in the left-right width direction of the chassis. Even during the operation of overhanging the outer side of the slider, the movement of the slider is guided by the extension rib portion, so that the operation stability during the movement of the slider is improved.

  In the present invention, the entire external force receiving member having the extended rib portion as a part is formed to have the same thickness as the thickness of the extended rib portion, and the external force receiving member is provided on the left and right sides of the chassis. It is desirable to protrude outward from one edge in the width direction. According to this, the external force receiving member not only serves as a reinforcing rib of the chassis, but there is an advantage that the addition of the external force receiving member does not cause an increase in the external size of the chassis.

  In the present invention, a configuration is adopted in which the outer end surface of the external force receiving member is formed by a vertical surface that is flush with the end surface of one end of the slider that has moved to the protruding position, which is the one-side limit position. By doing so, it is possible to avoid the external force receiving member from protruding greatly from one end edge in the left-right width direction of the chassis, and push the slider toward the limit position on the other side. The effect that the force to be received is received by the external force receiving member and hardly reaches the slider is surely exhibited.

  The disk device according to the present invention is further embodied by adopting the following configuration. That is, the above-mentioned support base of the resin chassis having the support base is provided with a guide rib extending in the left-right width direction of the support base, and a slider integrally provided with a rack that converts the forward / reverse rotational motion of the pinion into a reciprocating linear motion, In the disk device having a guide groove slidably fitted to the guide rib, a movable frame is attached to the chassis so as to be movable up and down, and a turntable on which the disk is mounted and recording of the disk An optical pickup that scans the surface is mounted, and when the movable frame rises, the disk mounted on the turntable is chucked and held so as to be integrally rotatable on the turntable, and the movable frame is lowered. Removes the chucking of the disc and removes the disc from the turntable. The slider is formed as a cam slider having a cam mechanism that raises and lowers the movable frame through a reciprocating movement in the left-right direction, and reciprocates in the left-right direction by the guide action of the guide groove and the guide rib. One limit position of the slider moving range is defined as a protruding position where one end of the slider projects beyond one edge in the left-right width direction of the chassis, and one end of the slider is When the chassis is positioned so as to protrude beyond the one edge in the left-right width direction, it receives external force in the direction in which the slider is pushed toward the limit position on the other side of the moving range, and external force reception that makes it difficult to transmit to the slider. The stop member is integrally formed on the chassis so as to protrude from one end edge in the left-right width direction, The guide rib includes an extended rib portion that extends outward beyond one edge in the left-right width direction of the chassis, and the extended rib portion forms a part of the external force receiving member and receives the external force. The entire member is formed to have the same thickness as the extension rib portion and protrudes outward from one edge in the left-right width direction of the chassis, and the outer end surface of the external force receiving member is the one-side limit position. It is further embodied by adopting a configuration in which the slider is formed by a vertical surface that is flush with the end surface of the one end of the slider that has moved to the protruding position. The operation of the present invention will be described in detail with reference to embodiments described later.

  According to the present invention, even if the limit position on one side of the moving range of the slider is determined to be a protruding position where one end of the slider protrudes beyond one edge in the left-right width direction of the chassis, Since the external force receiving member receives the force to push the slider and makes it difficult for the slider to reach the slider, it is possible to prevent a situation in which the slider positioned at the one-side limit position is accidentally pushed to cause a gear shift. . For this reason, it is difficult to cause a malfunction that is caused by an unexpected pushing operation of the slider, and it is possible to provide a disk device that is excellent in operational stability and does not cause the malfunction described above. Become.

  In addition, it is possible to provide a disk device that does not cause the above-mentioned malfunctions by adding extremely simple measures without adding parts and without increasing the outer size. Become.

  1 is an external perspective view of a disk device according to an embodiment of the present invention, FIG. 2 is a plan view corresponding to FIG. 7, FIG. 3 is a plan view corresponding to FIG. 8, and FIG. It is sectional drawing of the part which follows.

  As can be seen by comparing FIGS. 1 to 4 with FIGS. 5 and 7 to 9 described above, in the disk device of this embodiment, the external force in the disk device described with reference to FIGS. The receiving member 100 is only formed integrally with the resin chassis 1 so as to protrude from one end edge 12 in the left-right width direction, and the other configuration has been described with reference to FIGS. It is the same as the disk device.

  As shown in FIG. 1 or FIG. 2 to FIG. 4, the external force receiving member 100 is formed in a rib shape at a corner portion formed by the mounting bracket 4 and the side surface of the chassis 1. The external force receiving member 100 functions as a reinforcing rib for the chassis 1 and its mounting bracket 4. Further, in this embodiment, the guide rib 8 provided on the upper surface of the support base 5 of the chassis 1 includes the extension rib portion 81 that extends straight beyond the one edge 12 in the left-right width direction of the chassis 1 to the outside. The extension rib portion 81 forms a part of the external force receiving member 100, specifically, the upper end portion of the external force receiving member 100. Furthermore, as can be seen from FIG. 3, the entire external force receiving member 100 is formed to have the same thickness as the extension rib portion 81 and protrudes outward from one end edge 12 in the left-right width direction of the chassis 1. As shown in FIG. 4, the outer end surface 101 of the external force receiving member 100 is formed by a vertical surface that is flush with the end surface of one end of the slider 6 that has moved to the protruding position that is the one-side limit position.

  Since the other configuration is the same as that of the disk device described with reference to FIGS. 5 to 9, the same or corresponding parts are denoted by the same reference numerals as those in FIGS. Description of each part is omitted.

  According to the disk device having the above-described configuration, the operator or operator can move the slider 6 over the one end edge 12 in the left-right width direction of the chassis 1 during the assembly process or other handling of the disk device. Force when trying to push one end inadvertently or trying to touch it by mistake with a handling or emergency member, that is, force trying to push the slider 6 toward the limit position on the other side ( Since the arrow F) in FIG. 4 is received by the external force receiving member 100 and does not easily reach the slider, a situation in which the slider 100 is accidentally pushed cannot occur. Therefore, there is no room for the gear shift due to the unexpected pushing operation of the slider 100, and the gear shift does not cause a malfunction.

  In addition, since the extension rib portion 81 provided on the guide rib 8 forms the upper end portion of the external force receiving member 100 and guides the guide groove portion 62 of the slider 6, one end portion 65 of the slider 6 is the chassis. 1 has an advantage that the movement of the slider 6 is guided by the extension rib portion 81 and the operation stability during the movement of the slider is improved even during the operation of projecting beyond one edge 12 in the left-right width direction.

  Further, as can be seen from FIG. 1, FIG. 2, and FIG. 4, the protruding width of the external force receiving member 100 from the one edge 12 in the left-right width direction of the chassis 1 is smaller than the protruding width of the mounting bracket 4. Further, the external force receiving member 100 is formed by a matter that the outer end surface 101 of the external force receiving member 100 is formed by a vertical surface that is flush with the end surface of one end of the slider 6 that has moved to the projecting position that is one side limit position. Despite the addition of 100, the external size of the chassis 1 is the same as that without the external force receiving member 100 (shown in FIG. 6 and the like). There is no need to expand the installation space when housed in the body. Therefore, there is an advantage that it is not necessary to reduce the installation space for other elements in the casing.

  In this embodiment, the upper end portion of the external force receiving member 100 is formed by the extended rib portion 81 of the guide rib 8, or the thickness of the external force receiving member 100 is determined to be the same as the thickness of the extended rib portion 81. However, it is also possible to provide the external force receiving member 100 separately from the guide rib 8. Even in such a case, the external force receiving member 100 can prevent the slider 6 moving to the one-side limit position from being accidentally pushed. Can be prevented.

1 is an external perspective view of a disk device according to an embodiment of the present invention. It is a top view of the principal part of the disc apparatus concerning an embodiment. It is a side view of the principal part of the disc apparatus concerning an embodiment. It is sectional drawing of the part which follows the IV-IV line | wire of FIG. It is the schematic perspective view which showed the external appearance of the disc apparatus as a comparative example. It is the top view which showed schematic structure of the disk apparatus as a comparative example. It is an enlarged view of the principal part of FIG. It is a side view of the principal part of FIG. It is sectional drawing of the part which follows the IX-IX line of FIG.

Explanation of symbols

1 Resin chassis 5 Support stand 6 Slider (cam slider)
7 Pinion 8 Guide rib 9 Movable frame 12 One end edge in the left-right width direction of the chassis 61 Rack 62 Guide groove portion 65 One end portion of the slider 81 Extension rib portion 91 Turntable 92 Optical pickup 100 External force receiving member 101 External end surface of the external force receiving member

Claims (5)

The above-mentioned support base of the resin chassis having the support base is provided with a guide rib extending in the left-right width direction of the support base, and a slider integrally including a rack for converting the forward / reverse rotation motion of the pinion into a reciprocating linear motion, In the disk device having a guide groove slidably fitted to
A movable frame is attached to the chassis so as to be movable up and down, and a turntable on which a disk is mounted and an optical pickup that scans a recording surface of the disk are mounted on the movable frame, and the turntable is raised by raising the movable frame The disc mounted on the disc is chucked and held on the turntable so as to be integrally rotatable, and when the movable frame is lowered, the disc is unchucked and the disc can be removed from the turntable. The slider is formed as a cam slider having a cam mechanism that raises and lowers the movable frame through a reciprocating movement in the left-right direction.
One limit position of the slider moving range that reciprocates in the left-right direction by the guide action of the guide groove and the guide rib is such that one end of the slider extends beyond the one edge in the left-right width direction of the chassis. When the slider is positioned at the protruding position where the slider projects and is positioned so that one end of the slider protrudes beyond the one edge of the chassis in the left-right width direction, the slider is directed toward the other limit position of the moving range. The external force receiving member that receives the pressing external force in the direction to be pushed in and hardly transmitted to the slider is integrally formed on the chassis so as to protrude from one end edge in the left-right width direction,
The guide rib includes an extended rib portion that extends outward beyond one edge in the left-right width direction of the chassis, and the extended rib portion forms a part of the external force receiving member and receives the external force. The entire member is formed to have the same thickness as the extension rib portion and protrudes outward from one edge in the left-right width direction of the chassis, and the outer end surface of the external force receiving member is the one-side limit position. A disk device characterized in that it is formed by a vertical surface that is flush with the end surface of one end of the slider that has moved to the protruding position. The above-mentioned support base of the resin chassis having the support base is provided with a guide rib extending in the left-right width direction of the support base, and a slider integrally including a rack for converting the forward / reverse rotation motion of the pinion into a reciprocating linear motion, In the disk device having a guide groove slidably fitted to
The limit position on one side of the slider moving range that moves along the linear motion path by the guide action of the guide groove and the guide rib is such that one end of the slider extends beyond the one edge in the left-right width direction of the chassis. When the slider is positioned at the protruding position where the slider projects and is positioned so that one end of the slider protrudes beyond the one edge of the chassis in the left-right width direction, the slider is directed toward the other limit position of the moving range. An external force receiving member that receives a pressing external force in a pushing direction and makes it difficult to transmit to a slider is integrally formed on the chassis so as to protrude from one end edge in the left-right width direction. The said guide rib is provided with the extension rib part extended over the outer side across the edge of the left-right width direction of the said chassis, The extension rib part forms a part of said external force receiving member. The disk device described. The entirety of the external force receiving member having the extended rib portion as a part is formed to have the same thickness as the thickness of the extended rib portion, and the external force receiving member is one end edge in the left-right width direction of the chassis. 4. The disk device according to claim 3, wherein the disk device protrudes outward from the disk. 5. The disk apparatus according to claim 4, wherein an outer end surface of the external force receiving member is formed by a vertical surface that is flush with an end surface of one end of the slider that has moved to the protruding position that is the one-side limit position.

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