JP5541700B2 - Disk unit - Google Patents

Description

  The present invention has a mechanism control unit that controls the operation of the mechanism unit, and even when an operation instruction signal for ejecting the disk is not normally given to the mechanism control unit, the disk can be ejected with a simple operation. The present invention relates to a disk device that can be operated.

  A so-called slot-in type disk device in which a disk is inserted from a slit-shaped insertion opening formed in a housing is used for in-vehicle use. This disk device is provided with a rotation drive unit that holds the center part of the disk, a transport mechanism that includes a transport roller, and a clamp mechanism that holds the center part of the disk on the rotation drive part. Yes.

  When the disc is inserted from the insertion slot and the detection unit in the housing detects this, the transport mechanism is started, the disc is carried toward the rotation drive unit, and the center of the disc is clamped to the rotation drive unit. The

  As described in the following Patent Document 1 and the like, this type of disk device is provided with an eject switch in the operation unit. When the eject switch is operated, the clamp of the disk by the clamp mechanism is released and transported. By the mechanism, the disc is carried out toward the insertion slot of the housing.

JP 2000-90529 A

  However, in a slot-in type disk device, if the eject switch fails when the disk is loaded inside the housing, normal ejection cannot be performed and the disk inside the housing cannot be removed. . Even if the eject switch operates normally, the clamp mechanism or the transport mechanism cannot be operated normally due to a malfunction of the microcomputer, and the disk ejection operation may not be performed.

  In this case, maintenance work such as removing the disk device from the vehicle body, disassembling the mechanism and taking out the disk is required.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a disk device that can take out a disk without disassembling even if there is an eject switch failure or a microcomputer malfunction. Yes.

The present invention includes a rotation drive unit, a clamp mechanism that clamps a central portion of a disk to the rotation drive unit, and a transport mechanism that carries a disk inserted from an insertion port of a housing toward the rotation drive unit. In the disk device provided with the mechanism part,
The disk is detected in at least one of a carry-in operation and a discharge operation, which is located at a position disengaged from the disk clamped by the rotation drive unit and can be operated from the insertion port , and the disk is clamped by the rotation drive unit A detection member that is sometimes in a non-detection state is provided,
When the disc cannot be ejected normally even if the operation unit is operated, a mechanism control unit is provided for causing the mechanism unit to execute a disc ejection operation when the detection member is switched to a detection state by an operation from the insertion port. It is characterized by that.

  The disk device according to the present invention can detect a detection signal from the detection unit even if the eject operation unit provided in the operation unit fails or the device control unit to which an operation signal is given from the operation unit malfunctions. By giving directly to the mechanism, the mechanism control unit can be operated. For this reason, the disc can be automatically ejected from the insertion slot without disassembling the mechanism.

  That is, according to the present invention, a device control unit that provides an operation instruction signal to the mechanism control unit in response to an operation of the operation unit is provided. Even if the operation unit is operated, the device control unit transfers the mechanism control unit to the mechanism control unit. When the operation instruction signal for ejecting the disc is not normally given, and the detection member is switched to the detection state, the mechanism control unit is controlled to perform the disc ejection operation by the mechanism control unit. it can.

  According to the present invention, in the disc ejection operation of the mechanism unit, the disc clamp by the clamp mechanism is released, and the disc is carried out toward the insertion port by the transport mechanism.

For example, the detection member is a light detection unit located on the disk transport path, and the disk discharge operation is performed by blocking the detection light of the light detection unit with a tool inserted from the insertion port.

As described above, when a normal ejection operation cannot be performed with the disc in the housing, the disc can be automatically ejected by manually operating the detection member that detects the disc. Become.

  In the present invention, it is preferable that power is directly supplied to the mechanism control unit when the apparatus is started.

As described above, regardless of the operation state of the disk device, if the power is supplied to the mechanism control unit for a predetermined time or continuously when the power is turned on, the detection operation of the detection member is performed during this period. Is possible. Therefore, when the disk ejection operation is not normally performed when the power is turned on, the disk can be ejected by operating the detection member .

The disk device of the present invention operates the detection unit and gives a signal directly to the mechanism control unit when the operation for ejecting the disk cannot be performed due to a failure of the operation unit, etc. The disc can be ejected.

The front view which looked at the operation panel of the disk device of an embodiment of the invention from the front, A plan view showing the main part of the internal structure of the disk device, Circuit block diagram of the disk device,

  A disk device 1 shown in FIGS. 1 and 2 has a metal housing 2, and an operation panel 3 is fixed to a front surface 2 a of the housing 2 facing in the Y1 direction. The casing 2 is a rectangular parallelepiped having a size of 1 DIN, and is embedded in an instrument panel or the like in the interior of the automobile. The operation panel 3 is installed so as to be exposed on the surface of the instrument panel.

  As shown in FIG. 1, an insertion port 4 that is elongated in the lateral direction is opened on the front surface 3 a of the operation panel 3 facing in the Y1 direction. The insertion port 4 communicates with the inside of the housing 2. A display 5 such as a liquid crystal display panel is provided on the front surface 3 a of the operation panel 3. Further, operation units 6, 7 and 8 are provided on the front surface 3 a, and the operation unit 8 serves as an eject operation button 8.

  A mechanism unit 10 is housed inside the housing 2. The mechanism unit 10 has various components for loading the disk D, clamping the loaded disk D to the rotation driving unit, and driving the disk D to rotate and reproduce information recorded on the disk and record information. doing.

  The mechanism unit 10 has a mechanism chassis 11 formed of a metal plate. Inside the housing 2, the mechanism chassis 11 is elastically supported by a plurality of dampers 12. A rotation drive unit 13 is provided at the center of the mechanism chassis 11. The rotation drive unit 13 has a spindle motor Ms and a turntable fixed to the rotation shaft thereof.

  The mechanism chassis 11 is provided with a clamp mechanism 14. The clamp mechanism 14 has a clamp arm 15. The clamp arm 15 is formed of a metal plate, and bearings 15a and 15a provided on both sides on the back side (Y2 side) of the apparatus are rotatably supported by a support shaft fixed to the mechanism chassis 11. Yes. A rotation support portion 15b is provided at the tip of the clamp arm 15 on the Y1 side, and a synthetic resin clamp member 16 is rotatably supported by the rotation support portion 15b.

  A clamp spring 17 of a torsion spring is provided on the side of the clamp arm 15. One arm portion 17a of the clamp spring 17 is hung on the clamp arm 15, and the other arm portion 17b is hung on the mechanism chassis 11, and the clamp arm 15 is biased in a direction in which the clamp member 16 is pressed against the turntable. ing.

  A switching member 20 is provided on the left side of the mechanism chassis 11 in the figure. The switching member 20 is supported so as to be reciprocally movable in the Y1-Y2 direction. On the switching member 20, a clamp control protrusion 20a protrudes upward (frontward in FIG. 2). In FIG. 2, when the switching member 20 moves in the Y2 direction, the lifting portion 15c of the clamp arm 15 is lifted by the clamp control projection 20a, and the clamp member 16 is released from the turntable and is in a clamp release state. When the switching member 20 moves in the Y1 direction and the clamp control projection 20a is detached from the lifting portion 15c, the clamp arm 15 is rotated by the clamp spring 17, and the clamp member 16 is pressed against the turntable and set in a clamped state. Is done.

  A transport mechanism 18 is provided between the operation panel 3 and the rotation drive unit 13. The transport mechanism 18 includes a roller shaft 18a and synthetic rubber transport rollers 18b and 18b provided on the outer periphery of the roller shaft 18a. A synthetic resin sandwiching member facing the transport rollers 18b and 18b is provided inside the housing 2, and the roller shaft 18a is urged by the transport spring in a direction in pressure contact with the sandwiching member. The disc D inserted from the insertion port 4 is sandwiched between the transport rollers 18b and 18b and the sandwiching member, and is carried in the Y2 direction or carried out in the Y1 direction by the rotational force of the transport rollers 18b and 18b.

  A switching motor Mc is provided inside the housing 2. The roller shaft 18a is rotationally driven by the power of the switching motor Mc, and the switching member 20 is further moved.

  As shown in FIG. 2, detection units 19 a, 19 b, and 19 c are provided between the operation panel 3 and the transport mechanism 18. The detectors 19a, 19b, and 19c are all optical detectors. A light emitting element is provided on one of the upper and lower sides of the conveyance path of the disk D, and a light receiving element is provided on the other.

  As shown in FIG. 2, when the disk D reaches the loading completion position (i) and the center of the disk D is clamped by the turntable and the clamp member 16, the detection units 19a and 19b are D is detected, and the detection unit 19c is arranged not to detect the disk D.

  The mechanism chassis 11 is provided with an optical head 21. The optical head 21 moves in the radial direction of the disk along the recording surface of the disk D clamped by the rotation drive unit 13, and data recorded on the disk D is reproduced or recorded.

  As shown in the circuit block diagram of FIG. 3, a mechanism control unit 22 for controlling the mechanism unit 10 is provided inside the housing 2. The mechanism control unit 22 is a microcomputer, and controls the optical head 21, the switching motor 20 that drives the switching member 20 and the transport mechanism 18, and the spindle motor Ms of the rotation driving unit 13. The detection outputs of the detection units 19a, 19b, and 19c are given to the mechanism control unit 22.

  As shown in FIG. 3, a main board 31 is accommodated in the housing 2. On the main board 31, a device control unit 32, which is a microcomputer, a power supply circuit 33, and an audio amplifier 34 are mounted.

Next, the operation of the disk device 1 will be described.
When the power of the disk device 1 is turned on, power is directly supplied from the power supply circuit 33 to each mechanism unit of the mechanism unit 10, the mechanism control unit 22 and the detection units 19a, 19b, and 19c via the power line (a). Is done. When the disk device 1 is mounted on a vehicle, when the accessory switch of the vehicle is turned on, the disk device 1 is powered on as described above.

  The loading operation, the clamping operation, and the ejecting operation of the disk D are executed by the control operation of the mechanism control unit 22. When the disk D is inserted from the insertion port 4 and the detection unit 19a detects the disk, the detection output is given to the mechanism control unit 22. At this time, the switching motor Mc is started by the control operation of the mechanism control unit 22, and the roller shaft 18a is started in the loading direction. The disk D is sandwiched between the transport rollers 18b and 18b and the sandwiching member, and is carried in the Y2 direction by the rotational force of the transport rollers 18b and 18b.

  While the disk D is being carried in, the detection unit 19b continues the disk detection state, and the detection unit 19a is in the non-detection state when the center hole of the disk D passes, but before and after that, the detection unit 19a is in the detection state. The detector 19c changes from the non-detection state to the disk detection state, and enters the non-detection state when the disk D reaches the loading completion position (i). The mechanism control unit 22 monitors the combination of switching of the detection outputs of the detection units 19a, 19b, and 19c, and determines whether or not the regular disk D is loaded. When the device control unit 32 determines that the regular disk D is not loaded, the device control unit 32 gives an operation instruction signal for unloading the disk to the mechanism control unit 22. Here, what is not judged to be a regular disk is a small disk having a diameter of 8 cm, a disk that is not exactly circular, or a disk in which no hole is formed in the center.

  When a normal disk D is loaded and reaches the loading completion position (i), the loading detection member is pushed at the outer peripheral edge of the disk D, and the movement force of the loading detection member is provided. Thus, the power transmission path of the switching motor Mc is switched, and the power of the switching motor Mc is applied to the switching member 20. As a result, the switching member 20 moves in the Y1 direction, the clamp control projection 20a is separated from the lifting portion 15a, the clamp arm 15 is rotated by the urging force of the clamp spring 17, and the central portion of the disk D is the turntable and the clamp member 16. And the disk D is clamped.

  Almost simultaneously with the clamping operation, the roller shaft 18a is lowered by the moving force of the switching member 20 in the Y1 direction, and the transport rollers 18b and 18b are separated from the disk D. Furthermore, the mechanism chassis 11 in the housing 2 is unlocked by the moving force of the switching member 20 in the Y1 direction, and the mechanism chassis 11 is elastically supported by the damper 12.

  When the above operation is completed and the switching member 20 reaches the end of movement in the Y1 direction, the mechanism switch operates. When the detection output of the mechanism switch is given to the mechanism control unit 22, the switching motor Mc is stopped by a command from the mechanism control unit 22. Then, by the control operation of the mechanism control unit 22, the spindle motor Ms is rotationally driven and the disk D is rotationally driven. Further, the optical head 21 is started, and data recorded on the disk D is reproduced and recorded.

  The operation units 6 and 7 are operated to select the type of reproduction data from the disc D and to perform fast forward and fast reverse of the reproduction data. When the operation signal (b) at this time is given to the device control unit 32, an operation instruction signal is given from the device control unit 32 to the mechanism control unit 22 via the command line (c). Based on this operation instruction signal, the mechanism control unit 22 controls the spindle motor Ms and the optical head 21 to execute various controls such as selection of reproduction data, and fast-forwarding and fast-rewinding of reproduction data.

  The data read by the optical head 21 is supplied from the audio line (d) to the audio amplifier 34, demodulated into an audio signal, and further supplied from the audio line (e) to the speaker 35.

  The display 5 is supplied with power from the power line (f). When various control information is given from the apparatus control unit 32 to the display 5 through the display signal line (g), various information is displayed on the display 5.

  When taking out the disk D from the inside of the housing 2, an eject operation button 8 which is one of the operation units is operated. When the operation signal (b) of the eject operation button 8 is given to the device control unit 32, an operation instruction signal for ejecting the disc from the device control unit 32 to the mechanism control unit 22 is given via the command line (c).

  Upon receiving the operation instruction signal for ejecting the disk, the mechanism control unit 22 stops the spindle motor Ms, stops the rotation of the disk D, and further starts the switching motor Mc. When the spindle motor Ms has already stopped, the switching motor Mc is started immediately. The switching motor 20 shown in FIG. 2 is moved in the Y2 direction by the switching motor Mc, and the roller shaft 18a starts to rotate in the carry-out direction.

  When the switching member 20 moves in the Y2 direction, the clamp arm 15 is lifted by the clamp control protrusion 20a to release the clamp, the roller shaft 18a is lifted by the switching member 20, and the disk D is transported by the transport rollers 18b and 18b. And the clamping member. The disk D is discharged from the insertion port 4 to the outside by the rotation of the transport rollers 18b and 18b.

  During this time, the mechanism control unit 22 monitors the detection output of the detection unit 19c. When the detection unit 19c enters the disk detection state and then enters the non-detection state, the switching motor Mc is stopped, and the disk D is unloaded. Stop. As a result, as shown in FIG. 2 (ii), the disk D has transport rollers 18b and 18b, most of the disk D protruding from the insertion port 4 and the end on the Y2 side stopped, Stops while being pinched by.

  When the disk D is further pulled out and the detection units 19a and 19b are switched to the non-detection state, the mechanism control unit 22 determines that the disk D has been taken out of the housing 2, and the information is sent to the command line (c ) To the apparatus control unit 32.

  Here, when the eject operation button 8 is operated in a state where the disk D is clamped to the rotation drive unit 13, an operation instruction signal for causing the mechanism control unit 22 to eject the disk is sent from the device control unit 32. It may not be given normally. For example, when the eject operation button 8 breaks down, or even when the eject operation button 8 operates normally, the device control unit 32 becomes defective or the command line (c) becomes poor communication. An operation instruction signal for ejecting the disc is not normally given from the device control unit 32 to the mechanism control unit 22.

  In this case, a thin plate-like tool 41 that can block light is inserted into the housing 2 from the insertion port 4, and the light of the detection unit 19 c that is detached from the clamped disk D is blocked by the tool 41. .

  The mechanism control unit 22 recognizes that the disk D is clamped, and starts the operation for ejecting the disk when the detection unit 19c enters the detection state while the detection units 19a and 19b detect the disk. Control. That is, the spindle motor Ms is stopped, the switching motor Mc is started, and the disk D is ejected. When the disc is ejected to the position (ii), the apparatus stops.

  In order to perform the disc ejection process, it is necessary to supply power to the mechanism control unit 22 and the detection units 19a, 19b, and 19c. Therefore, whether the operation of the device control unit 32 is normal or not when the disk device 1 is turned on, or when the accessory switch of the vehicle is turned on when mounted on the vehicle. Regardless, power is directly supplied to the mechanism control unit 22 and the detection units 19a, 19b, and 19c by enabling the power supply line (a).

As a detection member for ejecting the disk, instead of the detection unit 19c, the detection state is entered in the middle of loading the disk D, and the non-detection state when the disk D reaches the loading completion position (i). Thus, any contact opening / closing type switch can be used as long as it can be switched to the detection state with a tool inserted from the insertion port 4 .

  Further, in the case of a disk device in which the insertion port 4 is closed by a shutter when the disk D is loaded in the housing 2, it is preferable that a slit is formed in the shutter for inserting the tool 41. .

DESCRIPTION OF SYMBOLS 1 Disk apparatus 2 Housing | casing 3 Operation panel 4 Insertion slot 6, 7, 8 Operation part 10 Mechanism part 11 Mechanism chassis 13 Rotation drive part 14 Clamp mechanism 15 Clamp arm 16 Clamp member 17 Clamp spring 18 Transport mechanism 20 Switching member 20a Clamp control Protrusion 19c Detection unit 21 Optical head 22 Mechanism control unit 32 Device control unit

Claims (5)

There is provided a mechanism unit that includes a rotation drive unit, a clamp mechanism that clamps the center portion of the disk to the rotation drive unit, and a transport mechanism that carries the disk inserted from the insertion port of the housing toward the rotation drive unit. In the specified disk unit,
The disk is detected in at least one of a carry-in operation and a discharge operation, which is located at a position disengaged from the disk clamped by the rotation drive unit and can be operated from the insertion port , and the disk is clamped by the rotation drive unit A detection member that is sometimes in a non-detection state is provided,
When the disc cannot be ejected normally even if the operation unit is operated, a mechanism control unit is provided for causing the mechanism unit to execute a disc ejection operation when the detection member is switched to a detection state by an operation from the insertion port. A disk device characterized by that.   An apparatus control unit that provides an operation instruction signal to the mechanism control unit in response to an operation of the operation unit is provided, and an operation instruction for ejecting a disk from the device control unit to the mechanism control unit even when the operation unit is operated 2. The disk apparatus according to claim 1, wherein when the detection member is switched to a detection state when the signal is not normally given, the mechanism control unit controls the mechanism unit to perform a disk ejection operation.   3. The disk device according to claim 1, wherein in the disk ejecting operation of the mechanism portion, the disk clamp is released by the clamp mechanism, and the disk is carried out toward the insertion port by the transport mechanism. The sensing member is a light sensing portion located on the conveying path of the disc, by blocking the detection light of the light detecting portion is inserted tool from the insertion opening, claims 1 disk ejection operation is performed 4. The disk device according to any one of 3 . When starting the apparatus, the disk apparatus according to any one of power claims 1 given directly to the mechanism control unit 4.

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