WO2005096294A1

WO2005096294A1 - Conveyance device and disk device

Info

Publication number: WO2005096294A1
Application number: PCT/JP2005/006155
Authority: WO
Inventors: Yukinari Makisaka; Hitoshi Ueno
Original assignee: Pioneer Corporation
Priority date: 2004-03-30
Filing date: 2005-03-30
Publication date: 2005-10-13

Abstract

A shaft member (541) has at its head section a projection section (543) projecting from an end surface (542F) in the axial direction of a roller (542). This causes a load to be applied from the outside of a desk device to the top surface of a case body (110), and even if the top surface sags toward the inside of the case body (110), the top surface of the case body (110) comes into contact with the projection section (543) and does not press the roller (542). As a consequence, the roller (542) can rotate smoothly without being hindered from rotating, and an optical disk (10) can be smoothly conveyed by an ejection arm (531), loading arm (533), and holding arm (534).

Description

Transport device and disk device

Technical field

The present invention relates to a transport device for loading and unloading a disk-shaped recording medium, and a disk device.

Background art

Conventionally, as a disk device of this type, a so-called slot-in type, which automatically transports a disk-shaped recording medium to a predetermined processing position when a disk-shaped recording medium is inserted by a user to a predetermined position. / Disk unit is known! This slot-in type disk device is provided with an arm for guiding insertion and ejection of a disk-shaped recording medium. The arm includes, for example, a load arm for drawing the disk-shaped recording medium into the disk device, an ejector arm for discharging the disk-shaped recording medium out of the disk device, and a hold arm for correcting the position of the disk-shaped recording medium. RU Each of these arms has a rotation center axis, and rotates around the rotation center axis as the disk-shaped recording medium is inserted and removed. At the distal ends of these arms, for example, as shown in FIG. 1, the peripheral surface of the arm comes into contact with the peripheral edge of the disk-shaped recording medium to be conveyed, and is relatively rotated to smoothly convey the disk-shaped recording medium. Each of the pulleys 900 is provided.

In FIG. 1, a conventional pulley 900 is provided with a shaft member 903 projecting from each arm 901 to the case 902 side. A roller 904 that is in contact with the peripheral edge of the disk-shaped recording medium 905 is rotatably mounted on the peripheral surface of the shaft member 903. Thus, the roller 904 is relatively rotatable by the rotational movement of the arm 901 accompanying the insertion and removal of the disk-shaped recording medium 905 and the rotational movement of the conveyed disk-shaped recording medium 905. Disclosure of the invention

Problems to be solved by the invention

[0004] By the way, with the recent miniaturization of disk devices, miniaturization of disk devices is desired. In particular, there is a strong demand for miniaturization of portable personal computers and the like. Therefore, as shown in FIG. 1, the pulley 900 is moved from the axial end face of the roller 904 to It is conceivable that the tip of the shaft member 903 does not protrude. In addition, it is conceivable that the thickness of the case 902 is designed to be thinner as the disk device becomes smaller and lighter.

[0005] If the thickness of the case body is designed to be thinner while the space between the case body and the pulley 900 is shortened while reducing the size of the case body, it is necessary to reduce the external force. The pressure may cause the case body to radially abut against the pulley 900, and the pulley 900 may not be able to move. For this reason, a problem that the disk-shaped recording medium may not be satisfactorily conveyed is cited as an example.

An object of the present invention is to provide a transport device and a disk device for smoothly transporting a disk-shaped recording medium.

Means for solving the problem

[0007] A transport device of the present invention is a transport device that carries out at least one of loading a disk-shaped recording medium into a case and transporting the disk-shaped recording medium out of the case. A rotating member whose peripheral surface is in contact with a peripheral edge of the disk-shaped recording medium; and a shaft member protruding from the moving path of the disk-shaped recording medium so as to intersect with the axial direction and rotatably supporting the rotating member. A transport unit disposed in the body such that the shaft member is movable along a movement path such that a front end of the shaft member moves along the inner surface of the case body; Are provided so as to protrude from an axial end face of the rotating body.

[0008] A disk device of the present invention includes a case body having an opening through which a disk-shaped recording medium is inserted and removed, and the transport device of the present invention provided in the case body. The transport unit of the transport device is disposed such that a gap having a dimension smaller than the thickness dimension of the disk-shaped recording medium is interposed between the axial end surface of the rotating body and the inner surface of the case body. It is characterized by.

Brief Description of Drawings

FIG. 1 is a cross-sectional view showing a distal end portion of a conventional arm member.

FIG. 2 is a partially cutaway plan view showing a schematic configuration of a disk device according to an embodiment of the present invention.

FIG. 3 shows an arm before or after the optical disc is inserted in the embodiment. It is a top view which shows the position of a member typically.

FIG. 4 is a plan view schematically showing a position of an arm member during insertion or ejection of the optical disc in the embodiment.

FIG. 5 is a plan view schematically showing the position of an arm member after insertion or before ejection of the optical disc in the embodiment.

FIG. 6 is a cross-sectional view showing a distal end portion of the arm member according to the embodiment.

FIG. 7 is a cross-sectional view showing a distal end portion of an arm member according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a distal end portion of an arm member according to still another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a distal end portion of an arm member according to still another embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a distal end portion of an arm member according to still another embodiment of the present invention.

Explanation of symbols

10 Optical disk as disk-shaped recording medium

100 ... Disk device

110… Case body

510… Link mechanism as transport unit

531 · · 'Eject arm that is the transport unit

533… Load arm that is a transport unit

535: Hold arm that is the transport unit

541, 541Α

542, 544 · · · Rollers as rotating bodies

542B… Disc contact part

542C… Disc holding piece as locking part

543, 543A, 543B, 543C ... Projection

545 ... Lid member as a shaft support member BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the present embodiment, a force applied to a so-called slot-in type disk device for recording and reading information on an optical disk as a disk-shaped recording medium will be described. be able to. Further, the present invention is not limited to a disk device that performs information processing on an optical disk, but can be applied to any disk device. Further, the disk-shaped recording medium is not limited to an optical disk, but may be any disk-shaped recording medium such as a magnetic disk and a magneto-optical disk. In addition, for example, a force such as a so-called thin slot interface attached to an electric device such as a portable personal computer, for example, a game machine or a playback device that performs processing for recording and reproduction such as video data recording. The configuration is not limited to a thin configuration.

[Configuration of Disk Device]

In FIG. 2, reference numeral 100 denotes a disk device. The disk device 100 is a so-called thin slot-in type mounted on an electric device such as a portable personal computer. The disk device 100 includes a reading process as information processing for reading information recorded on a recording surface (not shown) provided on at least one surface of a disk-shaped optical disk 10 as a disk-shaped recording medium which is detachably mounted. Performs recording processing, which is information processing for recording various information on the recording surface. The disk device 100 has, for example, a substantially box-shaped case body 110 made of metal and having an internal space. The case body 110 is provided on one side with an iridescent board 111 formed in an elongated plate shape, for example, of synthetic resin. The decorative plate 111 has an opening (not shown) provided in a slit shape along the longitudinal direction. In the case body 110, a disk processing unit 200 called a traverse mechanism, a processing moving unit 300, a driving unit 400 as a moving unit for moving the disk processing unit 200, and the optical disk 10 are transported. A transfer means 500 as a transfer device and a control circuit (not shown) are provided.

As shown in FIG. 2, the disk processing section 200 has a pedestal section 210 formed of, for example, a metal plate in a flat octagonal shape in plan view. The pedestal portion 210 is formed in a frame shape with a notch 211 provided substantially at the center. A relief 212 is formed on the inner periphery of the base 210. A notch is formed continuously with the notch 211. Further, on the inner peripheral surface of the notch portion 211 of the pedestal portion 210, for example, two pairs of step portions 213 as a pair of regulating means facing each other along the longitudinal direction of the pedestal portion 210 are provided.

[0014] The pedestal portion 210 is provided with a disk rotation drive means 220 located at one end in the longitudinal direction near the periphery. The disk rotation driving means 220 includes a rotating electric motor (not shown) such as a spindle motor and a turntable 222 integrally provided on the output shaft 221A of the rotating electric motor. The electric motor for rotation is controllably connected to the control circuit unit and is driven by electric power supplied from the control circuit unit. The turntable 222 has a substantially cylindrical rotating shaft 222A which is a shaft supporting portion that is inserted into a shaft hole (not shown) formed at the center of the optical disc 10 and is supported by the shaft. And a flange portion 222B that protrudes and supports the peripheral edge of the shaft hole of the optical disc 10 mounted thereon. Then, the turntable 222 rotates together with the optical disc 10 that is supported by the rotation motor.

[0015] Further, a pair of guide shafts 230 as guide members are provided on the base 210. These guide shafts 230 are formed, for example, in the form of elongated metal rods, and are supported in such a manner that both ends in the axial direction are bridged between the step portions 213 of the pedestal portion 210, and the axial direction is substantially in the longitudinal direction of the pedestal portion 210. It is arranged substantially parallel to the state along.

[0016] Further, an information processing unit 240 is provided on the pedestal unit 210. The information processing section 240 includes a movement holding section 241 supported in a state of being bridged between the pair of guide shafts 230. The movement holding part 241 includes a holding part 241A for movably inserting the guide shaft 230, and a movement restricting claw part 241B as a locking part. In addition, the movement holding unit 241 includes a light source (not shown), a lens 242A that converges the light having the light source power, and a pickup 242 that includes an optical sensor (not shown) that detects the light reflected by the optical disk 10. Is established. The pickup 242 is connected to the control circuit so that signals can be transmitted and received, and under the control of the control circuit, reads various information recorded on the recording surface of the optical disc 10 and outputs the information to the output circuit. A recording process for recording various information from the control circuit unit on the recording surface is performed.

[0017] A cover body (not shown) is integrally attached to base 210. this In the cover body, a long processing opening is cut out substantially at the center along the longitudinal direction of the pedestal 210 corresponding to the movement path of the pickup 242 and the position of the turntable 222. The disk processing unit 200 is configured such that the one end of the pedestal unit 210 in the longitudinal direction, on which the turntable 222 is provided, is rotatable in a direction substantially along the axial direction of the rotating shaft 222A, and the other end is pivotally connected to the case body 110. It is supported and is rotatably disposed in the case body 110 such that the turntable 222 side is a rotation end.

The processing moving means 300 is integrally provided on the bottom surface of the case body 110, and moves the information processing section 240 provided on the pedestal section 210 and supported by the guide shaft 230. The processing moving means 300 includes a moving electric motor 310 such as a stepping motor which is an electric motor, a lead screw 320 as a screw member, and a mounting portion 330.

The electric motor for movement 310 is controllably connected to the control circuit, and is driven by electric power supplied from the control circuit. The lead screw 320 is formed in, for example, an elongated metal bar shape, and has a spiral engagement groove 321 as an engagement portion with which the movement restricting claw portion 241B of the information processing unit 240 is engaged. You.

The attachment part 330 is formed in a substantially flat plate shape by, for example, a metal plate, and is attached to the case body 110 by, for example, screwing. The mounting portion 330 is formed with a pair of not-shown shaft support plates that face each other in the longitudinal direction and rotatably support both ends of the lead screw 320 in the axial direction. In addition, a holding plate portion for holding the electric motor 310 for movement is formed in the attachment portion 330 by bending together with one shaft support plate portion. Then, the mounting part 330 moves the electric motor 310 for movement and the lead screw 320 so that the output shaft (not shown) of the electric motor 310 for movement is integrally and substantially coaxially connected to one axial end of the lead screw 320. Each is held and attached to the bottom surface of the case body 110. This mounting position corresponds to the relief portion 212 of the pedestal portion 210 in a state where the pedestal portion 210 does not contact when the disk processing unit 200 rotates, and the axial direction of the lead screw 320 is substantially parallel to the axial direction of the guide shaft 230. It is arranged in a state. That is, even when the lead screw 320 is rotated by the driving of the electric motor 310 for movement, the movement restricting claw 241B of the information processing unit 240 is not disengaged from the engagement groove 321.

[0020] The drive unit 400 includes, for example, a control circuit unit provided in the case body 110 as shown in FIG. And a moving cam 410 that is moved by driving the motor. The moving cam 410 engages with an engaging claw 214 projecting outward from the pedestal 210 and engages with the motor, and is moved by driving the motor to rotate the pedestal 210. The rotation of the pedestal part 210 is a state in which the rotating shaft 222A of the turntable 222 advances and retreats on the movement path on which the optical disk 10 is transported by the transport means 500.

The detection switch of the driving means is provided on the case body 110, and is turned on / off by the rotation state of the interlocking arm 532. Specifically, the eject arm 531 is turned off near the carry-in completion position, which is substantially the same position as the standby position (see FIG. 3), and is turned on when the eject arm 531 is rotated other than that. . Then, the on / off signal of the detection switch 520 is output to the control unit control means of the control circuit unit.

The control circuit unit is configured as a circuit configuration on a circuit board on which various electric components are mounted, for example, and controls the operation of the entire disk device 100. When the control circuit unit detects the insertion of the optical disk 10 based on the on / off state of the detection switch 520 of the transport means 500, that is, recognizes that the detection switch 520 has been turned off, it determines that the optical disk 10 has been inserted, The drive unit 400 is operated to rotate the disk processing unit 200 to an advanced position where the disk processing unit 200 advances on the movement path of the optical disk 10. Further, the control circuit unit recognizes an operation of an eject button for requesting ejection of the optical disc 10, or recognizes a command signal for ejecting the optical disc 10 from an electric device, and the like. The controller 310 is driven to move the information processing unit 240 to the end position of the pedestal unit 210 on the rotation base end side. Further, when the control circuit unit recognizes that the movement of the information processing unit 240 to the end position is completed, the control circuit unit operates the drive unit 400 to move the disk processing unit 200 to the retreat position where the moving path force of the optical disk 10 also retreats. The rotation is controlled. Then, the control circuit drives the transport motor of the transport means 500 to move the link mechanism, and controls the optical disc 10 to discharge the opening.

As shown in FIG. 2 to FIG. 5, the transport means 500 is interlocked with a transport motor (not shown) provided in the case body 110 and operation-controlled by, for example, a control circuit unit, by driving the transport motor. It has a link mechanism section 510 as a transport section, a detection switch 520, and a guide groove 550 for guiding the insertion of an optical disk. The link mechanism 510 is an arm member 523. It includes an eject arm 531, an interlocking arm 532 as an arm member, a load arm 533 as an arm member, and a hold arm 353 as an arm member. The eject arm 531, the interlocking arm 532, the load arm 533, and the hold arm 534 are formed in, for example, a metal plate or the like in an elongated plate shape, and are each formed with a rotating shaft 531A, 533A formed at one end in the longitudinal direction. , 534A, and is rotatably supported by the case body 110. The eject arm 531 and the interlocking arm 532, and the eject arm 531 and the hold arm 534 are connected to each other so that their longitudinal intermediate portions are rotatably supported by each other. As a result, the interlocking arm 532 and the hold arm 534 rotate.

The load arm 533 has the other end rotatably disposed in the vicinity of the opening of the case body 110 so as to be rotatable inward. In the vicinity of the tip of the eject arm 531, the load arm 533, and the hold arm 534 on the rotation side, the center in the axial direction is formed to have a small diameter, and the peripheral edge of the optical disc 10 abuts on the peripheral surface. Pulley 540 is rotatably supported. Note that the igitator arm 531 and the load arm 533 can move outward against a bias when a relatively strong force is applied. Specifically, when the optical disc 10 is pushed into the opening, the It is rotatable so that it can be pushed outward by the peripheral surface of 10. The guide groove 550 is formed on the inner surface of the case body 110 along the direction of inserting and removing the optical disk. In addition, a sliding portion (not shown) is formed on the top surface of case body 110 so as to correspond to the movement path of the substantially central axis of pulley 540. The sliding portion is formed of a metal material or a non-ferrous material having a small coefficient of friction, and reduces friction with the pulley 540. Note that the present invention is not limited to the configuration in which such a sliding portion is provided, and may be formed of a material having a small coefficient of friction with the shaft member 541 on the inner surface of the case body 110.

(Structure of pulley)

As shown in FIG. 6, the pulley 540 includes a shaft member 541 and a roller 542 as a rotating body having the shaft member 541 as a rotation axis. The shaft member 541 is provided near the distal ends of the eject arm 531, the load arm 533, and the hold arm 534, and is provided in a state in which the axial direction stands toward the top surface of the case body 110. Such a shaft member 541 is, for example, a case body. It is formed of a metal material or a non-metal material having a small frictional resistance with 110. Note that the shaft member 541 may be formed integrally with each of the arms 531, 533, and 534, or may be fixed to each of the arms 531, 533, and 534 by a screw or the like. A substantially spherical projection 543 is formed at the tip of the shaft member 541. A slight gap dimension L1 is formed between the spherical end of the protrusion 543 and the case body 110, and the protrusion 543 is movable along the inner surface of the body 110 to which the case 110 is attached. Note that, here, the force of using a metal material or a nonmetal material that reduces frictional resistance as the material of the shaft member 541 is not limited to this. For example, a coating layer such as a fluorine coating may be formed on the protruding portion 543 of the shaft member 541 to reduce the frictional resistance with the top surface of the case body 110.

The roller 542 is rotatably supported by passing the shaft member 541 through a shaft hole 542A formed in the axial direction. The roller 542 is made of, for example, a synthetic resin such as rubber. The roller 542 includes a disk contact portion 542B with which the peripheral edge of the optical disk 10 contacts, and a disk pressing piece 542C as a guide portion formed on the top surface side of the disk contact portion 542B and the case body 110. A roller base 542D as a guide formed on each of the arms 531, 533, 534 of the disk contact portion 542B, and a ring formed between the roller base 542D and each of the arms 531, 533, 534. And a groove 542E. The opposing surfaces of the disc pressing piece 542C and the roller base 542D are formed to be inclined so as to expand with respect to the annular groove 542E, that is, to expand radially outward of the roller 542. .

[0027] The disk contact portion 542B abuts the peripheral edge of the optical disk 10, and holds the optical disk 10 so as not to move in the axial direction when the optical disk 10 is inserted or ejected. At this time, the disk pressing piece 542C guides the optical disk 10 to the intermediate portion of the roller 542 by the inclined surface, and restricts the optical disk 10 from moving toward the top surface of the case body 110. Further, the roller base 542D is formed in an inclined shape in which the arms 531, 533 and 534 expand. Therefore, when the peripheral edge of the optical disk 10 comes into contact with the roller base 542D, the peripheral edge of the optical disk 10 moves on the roller base 542D on the slope and moves to the disk contact part 542B. You. In this manner, the optical disk 10 is held by the disk contact portion 542B of the roller 542. It is put in and out in the state.

The annular groove 542E is provided with an unillustrated urging means such as a coil spring, for example, and urges the roller 542 against the case body 110. FIG. 6 shows a state in which the roller 542 is not urged toward the top surface of the case body by the urging means for convenience of explanation.

[0029] The gap L2 between the end surface 542F of the roller 542 facing the top surface of the case body 110 and the top surface of the case body 110 is determined by the distance between the protrusion 543 of the shaft member 541 and the top surface of the case body 110. The distance L1 is set to be larger than the gap L1, and the protrusion 543 is formed to protrude between the end surface 542F of the roller 642 and the top surface of the case 110. Further, the optical disc 10 is provided in a state smaller than the thickness dimension L3.

[Operation of Disk Device]

Next, the operation of inserting and removing the optical disk 10 in the disk device 100 will be described.

First, power is supplied to the disk device 100 by turning on the electric device. By supplying the electric power, the control circuit recognizes the rotation state of the disk processing unit 200 based on the on / off state of the detection switch 520. Specifically, when the detection switch 520 is off, it is determined that the eject arm 531 of the link mechanism is in the standby state, the disk processing unit 200 determines that the disk is in the advanced position, and the optical disk 10 is inserted. Judge that it is located at the loading completion position. On the other hand, when the detection switch 520 is on, it is determined that the tip of the eject arm 531 is rotating toward the opening, the disk processing unit 200 determines that the disk is in the retracted position, and the optical disk 10 is loaded. It is determined that the optical disk 10 that has not been inserted is in a standby state. Then, the control circuit outputs a signal regarding whether or not the optical disk 10 is inserted into the circuit for controlling the operation of the electric device.

Then, when the optical disk 10 is inserted from the opening portion in the insertion standby state of the optical disk 10, the peripheral edge of the optical disk 10 contacts the pulley of the eject arm 531 as shown in FIG. When the optical disc 10 is further pushed in in this state, as shown in FIG. 4, the eject arm 531 and the load arm 533 are pushed out in a state of being urged and turned outward. Then, when the optical disc 10 is pushed to a certain extent, the load arm 533 goes over the periphery of the optical disc 10 and the load arm 533 is again urged to rotate inward. A force acts, and the optical disc 10 is carried into the insertion completed position by this urging force.

Further, when optical disk 10 is carried in before the carrying-in completion position shown in FIGS. 2 and 5, detection switch 520 is turned off. Then, when the control circuit recognizes the off of the detection switch 520, it starts the process of driving the motor of the drive unit 400 to move the moving cam 410 to rotate the disk processing unit 200 to the advanced position. . Then, when the optical disk 10 is carried in to the carry-in completion position shown in FIGS. 2 and 5, the eject arm 531 becomes the standby position, and the movement of the optical disk 10 is regulated. When the optical disk 10 is positioned at the loading completion position, the rotating shaft 222A of the turntable 222 of the rotating disk processing unit 200 is inserted into a shaft hole opened substantially in the center of the optical disk 10, and the optical disk 10 is moved. Turntable 222 222 This shaft is supported.

Here, when the optical disk 10 is inserted, the opposing surfaces of the disk pressing piece 542C and the roller base 542D are inclined so as to expand, and the end surface 542F of the roller 542 and the top of the case body 110 are inclined. The gap L2 with the surface is set smaller than the thickness L3 of the optical disc 10. Therefore, the optical disc 10 is guided in the middle of the roller 542 in the axial direction without being sandwiched between the roller 542 and the case body 110, and is relatively moved with the rotation of the optical disc 10 due to conveyance. The roller 542 rotates, and the optical disk 10 is smoothly transported.

Thereafter, the control circuit unit determines that the detection switch 520 is turned off, the optical disk 10 is carried in to the carry-in completion position, the disk processing unit 200 is in the advance position, and the optical disk 10 is pivotally supported. A standby state for information processing is appropriately set. Then, based on a request for information processing such as a reading process for reading various information recorded on the recording surface of the optical disc 10 and a recording process for recording various information on the recording surface, the control circuit unit includes an electric motor 221 for rotation, The operation of the electric motor 310 and the pickup 242 is appropriately controlled to execute information processing.

On the other hand, when the control circuit unit recognizes, for example, an operation of an eject button for requesting ejection of the optical disc 10 or a request signal for requesting ejection of electric device power, the control circuit unit drives the moving electric motor 310. Under the control, the information processing section 240 is moved to a state where the pickup 242 is located on the rotation base end side of the disk processing section 200. Thereafter, the control circuit unit drives the motor of the driving unit 400 to move the moving cam 410, and retreats the disk processing unit 200. Rotate to the position. The rotation of the disk processing unit 200 causes the rotation shaft 222A of the turntable 222 to be disengaged from the optical disk 10. After the rotation of the disk processing unit 200, the control circuit unit drives the transport motor, rotates the eject arm 531 to push out the optical disk 10, and also discharges the opening force of the optical disk 10. In this state, for example, a part of the optical disc 10 is not completely discharged and is supported in a state where it is positioned in the opening and does not fall off.

By the way, when a large force is applied to the case body 110 from the outside when the optical disc 10 is inserted or ejected when the optical disc 10 is loaded or unloaded, the inner surface of the case body 110 is bent by the shaft member 541. The state comes into contact with the tip. Here, the contact area of the case body 110 with the tip of the shaft member 541 is much smaller than the contact area when it comes into contact with the axial end face of the roller 904 as shown in FIG. 1, for example. Therefore, the rotation of the roller 542 can be supported, and the link mechanism section 510 of the transport means 500 can also be operated.

[Function and Effect of Disk Device]

As described above, in the present embodiment, the protruding portion 543 of the shaft member 541 is provided in a state in which the tip portion also protrudes the axial end face 542F of the roller 542. For this reason, even if the external force of the disk device 100 applies a load to the top surface of the case body 110 and the top surface radiuses toward the inside of the case body 110, the top surface of the case body 110 abuts on the protrusion 543, Do not hold down roller 542. Therefore, the roller 542 can rotate smoothly without hindering the rotation, and the optical disc 10 can be smoothly transported by the eject arm 531, the load arm 533, and the hold arm 534.

[0039] The protrusion 543 formed on the shaft member 541 is formed in a substantially spherical shape. Therefore, the contact position between the top surface of case body 110 and this protruding portion 543 becomes a contact point between the tip of the spherical surface and the top surface, and the contact area between protruding portion 543 and case body 110 can be reduced. Therefore, the frictional resistance between the protruding portion 543 and the case body 110 can be reduced, and the eject arm 531, the load arm 533, and the hold arm 534 can be smoothly rotated.

[0040] The shaft member 541 is formed of a material having a small coefficient of friction with the top surface of the case body 110, such as a metal member whose surface is processed smoothly. For this reason, the protrusion of the shaft member 541 Even when the portion 543 is in contact with the top surface of the case body 110, the frictional force with the case body 110 can be reduced. Therefore, the rotation of each of the arms 531, 533, and 534 is not hindered by the protruding portion 543, and the optical disc 10 can be smoothly transported.

Further, a coating layer for reducing the coefficient of friction with the inner surface of the case body 110 may be formed on the tip end of the protrusion 543 by, for example, fluorine coating or the like. Even in such a case, the frictional force between the protrusion 543 and the top surface of the case body 110 can be further reduced. Therefore, each arm 531, 533, 534 can be rotated with a smoother force.

[0042] The roller 542 is provided with a disk pressing piece 542C and a roller base 542D protruding in a flange shape at both axial ends of the disk contact portion 542 #. The disc holding piece 542C and the roller base 542D are inclined so as to expand outward in the radial direction of the roller 542. For this reason, the peripheral edge of the optical disk 10 can be positioned at the disk contact portion 542 # by sandwiching the peripheral edge between the disk pressing piece 542C and the roller base 542D. Further, even if the optical disc 10 is displaced in the axial direction of the roller 542, the peripheral edge of the optical disc 10 can move on the slope of the disc pressing piece 542C and the roller base 542D to the disc contact portion 542 #. Therefore, the optical disk 10 does not come off from the disk contact portion 542 #, and the optical disk 10 can be smoothly inserted and ejected.

Further, a sliding portion made of a material having a small coefficient of friction is formed on the top surface of case body 110 corresponding to the movement path of pulley 540. Therefore, when the top surface of case body 110 is pressed down so as to bend under the load, shaft member 541 of pulley 540 can come into contact with the sliding portion having a small friction coefficient. Therefore, the arms 531, 533, and 534 can rotate more smoothly, and the transport of the optical disk 10 can be performed more smoothly.

The gap L 2 between the end surface 542 F of the roller 542 and the top surface of the case body 110 is smaller than the thickness L 3 of the optical disk 10. For this reason, even if the optical disk 10 moves to the top surface side of the case body 110 beyond the disk pressing piece 542C of the roller 542, it does not get caught between the roller 542 and the case body 110. Further, a gap dimension L1 between the protruding portion 543 and the case body 110 is set to be smaller. Therefore, intrusion between the projecting portion 543 of the optical disc 10 and the case body 110 can be more reliably prevented. Therefore, with this configuration, the optical disc 10 can be ejected by being sandwiched between the pulley 540 and the case body 110. Loss of error, V, and other mechanical locks can be prevented.

Further, an annular groove 542E is formed in the roller 542, and an urging means for urging the roller 542 toward the top surface is provided in the annular groove 542E. For this reason, the roller 542 is pressed against the top surface side, so that the backlash in the axial direction can be prevented.

The protruding portion 543 is formed integrally with the shaft member 541. For this reason, the protrusion

There is no need to manufacture 543 separately. Therefore, it is possible to form a projection without impairing productivity.

[Modification of Embodiment]

In addition, specific structures and procedures for implementing the present invention can be appropriately changed to other structures or the like as long as the object of the present invention can be achieved.

[0048] That is, although the disk device 100 using the disk-shaped recording medium has been illustrated, as described above, the present invention is not limited to the optical disk 10, but may be any disk-shaped recording medium such as a magnetic disk or a magneto-optical disk. In addition to the V and so-called slot-in type disk devices, a pedestal portion provided with a shaft support moves. Also, the present invention can be applied to a configuration in which only one of the reading process and the recording process is performed. Further, although the spherical protrusion 543 is formed on the shaft member 541 of the pulley 540, it is not limited to this. For example, various configurations as shown in FIGS. 7 to 10 may be used.

[0049] The protrusion 543A of the pulley 540 shown in Fig. 7 is obtained by extending the shaft member 541 as it is. In such a protruding portion 543A, when the top surface of the case body 110 and the protruding portion 543A come into contact with each other, the frictional resistance is slightly increased. However, since the shaft member 541 is simply extended, it is easily formed. it can.

The protruding portion 543B of the pulley 540 shown in FIG. 8 is an example in which the peripheral surface of the distal end portion of the shaft member 541 is cut into a tapered shape. The protrusion 543C of the pulley 540 shown in FIG. 9 is an example in which the peripheral surface of the tip of the shaft member 541 is formed in a curved shape. As described above, in the protrusions 543B and 543C whose tip ends have a small diameter, the frictional resistance with the top surface of the case body 110 can be made smaller than that of the protrusion 543A shown in FIG. Further, the protrusions 543B and 543C and the shaft member 541 are passed through the shaft hole 542A of the roller 542, and the productivity is excellent immediately.

[0051] In the pulley 540 shown in Fig. 10, a shaft is provided between the shaft member 541A and the top surface of the case body 110. A lid member 545 is provided as a stop member. The cover member 545 is formed of a metal material / a non-metal material having a small friction coefficient, and the sliding with the case body 110 is smooth. Note that a cover layer such as a fluorine coating may be formed on the surface of the cover member 545 facing the top surface of the case body 110 to reduce the coefficient of friction. A pin 545A is formed in the lid member 545, and a locking hole 541B is formed in the center axis of the shaft member 541A. The lid member 545 is attached to the shaft member 541A by locking the pin portion 545A in the locking hole 541B. Further, the lid member 545 may be fixed to the shaft member 541A by adhesion or the like, or may be rotatably attached. In this case, since the lid member 545 moves while rotating along the top surface of the case body 110, frictional resistance is reduced, and the arms 531, 533, 534 can smoothly rotate. The attachment of the lid member 545 is not limited to the above, and may be, for example, a configuration in which the lid member 545 is bonded and fixed to the shaft member.

[0052] Further, since the cover member 545 is formed so as to protrude in the radial direction from the disk contact portion 544B of the roller 544, it also functions as a movement restriction of the optical disk 10 toward the top surface side. In this case, since the disk pressing piece of the roller 544 can be made unnecessary 542D, the configuration of the roller 544 can be simplified.

[0053] Further, the roller 544 may be configured to be rotatably mounted by a screw screwed to the arm. In such a configuration, the pulley can be easily formed only by forming a screw hole in the arm, and the configuration can be further simplified.

[0054] In the present embodiment, the roller 542 is urged toward the top surface by the urging means. For example, a biasing means for biasing toward the top-side force arm may be provided, or a configuration without the biasing means may be provided. When the configuration is such that no urging means is provided, the annular groove formed in the roller is not required, and the configuration can be simplified.

[0055] Further, the roller 542 is positioned by sandwiching the peripheral edge of the optical disk 10 with the disk contact portion 542B, the disk pressing piece 542C, and the roller base 542D. For example, the roller may be formed in a cylindrical shape. In such a case, productivity can be improved because the structure of the mouthpiece can be further simplified.

[0056] Although both the shaft member 541 and the case body 110 are formed of a member having a small coefficient of friction, provided with a coating layer, and provided with a sliding portion, only one of them has been described. The same operational effects as those of the above-described embodiment can be sufficiently obtained without using the configurations and further using these configurations. By providing such a configuration with a low friction coefficient, smoother operation of the link mechanism section 510 can be obtained.

[Effects of Embodiment]

As described above, the protruding portion 543 of the shaft member 541 is provided in a state where the tip portion also protrudes the axial end face 542F of the roller 542. For this reason, even if the external force of the disk device 100 also applies a load to the top surface of the case body 110 and the top surface is radiused toward the inside of the case body 110, the top surface of the case body 110 is Abuts roller 542 and does not hold down roller 542. Therefore, the roller 542 can smoothly rotate without hindering the rotation, and the optical disc 10 can be smoothly transported by the eject arm 531, the load arm 533, and the hold arm 534.

Industrial applicability

The present invention can be used as a transport device for loading and unloading a disk-shaped recording medium and a disk device, and can be used for a computer system using the disk-shaped recording medium and a video / audio recording / reproducing device.

Claims

The scope of the claims

[1] A transport device that carries out at least one of loading a disk-shaped recording medium into a case and discharging the case internal force,

A rotating body whose peripheral surface is in contact with the peripheral edge of the disk-shaped recording medium;

A shaft member protruding in a state in which the axial directions intersect on the movement path of the disk-shaped recording medium and rotatably supporting the rotating body; the shaft member is provided in the case body on the movement path; A transport unit movably disposed so that the tip of the member moves along the inner surface of the case body,

The shaft member is provided in a state in which a tip portion protrudes in an axial end face force of the rotating body.

A transfer device characterized by the above.

[2] The transport device according to claim 1, wherein

The shaft member is formed to have a small diameter at least toward the distal end.

A transfer device characterized by the above.

[3] The transport device according to claim 1, wherein

The shaft member has a tip surface formed into a spherical shape.

A transfer device characterized by the above.

[4] The transfer device according to any one of claims 1 to 3, wherein

The shaft member has a small coefficient of friction with the inner surface of the case body! (4) A transport device characterized by being formed of a material.

[5] The transfer device according to any one of claims 1 to 4, wherein

The shaft member is provided with a coating layer on at least the distal end surface where the friction coefficient with the inner surface of the case body is small.

A transfer device characterized by the above.

[6] The transfer device according to any one of claims 1 to 5, wherein

The shaft member has a large-diameter locking member that engages with an end surface of the rotating body and restricts axial movement of the rotating body.

A transfer device characterized by the above.

[7] The transfer device according to any one of claims 1 to 6, wherein a tip portion of the shaft member moves along an inner surface of the case body.

A transfer device characterized by the above.

[8] a case body having an opening through which the disk-shaped recording medium is taken in and out;

And the transfer device according to any one of claims 1 to 7 provided in the case body.

The transport unit of the transport device is disposed such that a gap having a dimension smaller than a thickness dimension of the disk-shaped recording medium is interposed between an axial end surface of the rotating body and an inner surface of the case body.

A disk device characterized by the above-mentioned.

[9] The disk device according to claim 8, wherein

The transfer device urges the rotating body toward the inner surface of the case body so that the rotating body can move by elastically deforming by the biasing force from the inner surface of the case body where the tip of the shaft member faces. With biasing member

A disk device characterized by the above-mentioned.