JP2006236444A - Disk recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk recording and reproducing device in which a motor for rotating the disk is also used as a motor for retracting, loading and unloading a disk with a simple configuration and for elevating a recording head. <P>SOLUTION: The rotational force in a first and second directions of a spindle motor 2 is transmitted to a disk guiding part 43 and a head 31 for recording by arranging an idler gear 9 provided in a transmitting means at an engagement position. In addition, the rotational force to the first direction of the spindle motor 2 is transmitted to a turn table 3 in a state that the idler gear 9 is arranged at a non-engagement position. Consequently, the spindle motor 2 provided in a drive means for the disk rotation is used for loading, mounting, ejecting the disk and elevating the head 31 for recording provided in a recording part 45. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk recording / reproducing apparatus such as an MD recorder provided with an automatic disk pull-in and automatic discharge apparatus.

  2. Description of the Related Art Conventionally, a disk recording / reproducing apparatus such as an MD recorder provided with such an automatic disk drawing / ejecting apparatus generally has a disk rotation motor and an operation motor for a disk reading unit such as an optical pickup. In addition to these, a total of three motors are provided, one for both pulling in, loading and ejecting the disc and for raising and lowering the recording head.

  FIG. 18 is a plan view showing a part of components of a disk drawing / ejecting device and a recording head lifting / lowering device in a conventional disk recording / reproducing apparatus having such a function. It is a side view. FIG. 20 is a plan view showing a component arranged in the upper space of the component depicted in FIG. 18, and FIG. 21 is a side view thereof. Further, FIG. 22 is a plan view showing a part of FIG. 20 extracted, and FIG. 23 is a side view showing a part of FIG.

  As shown in FIG. 18, a loading motor 101 is attached to a chassis 100 that is a body portion of the disk recording / reproducing apparatus near one corner inside thereof, and a motor gear 102 is press-fitted to the rotating shaft of the loading motor 101. And rotates integrally with the rotation shaft of the loading motor 101. Furthermore, a reduction gear A103, a reduction gear B104, and a cam gear C105 are attached to the chassis 100.

  The motor gear 102 is engaged with the gear 103a of the reduction gear A103, the gear 103b of the reduction gear A103 is engaged with the large gear 104a of the reduction gear B104, and the small gear 104b of the reduction gear B104 is engaged with the gear 105b of the cam gear C105. It is arranged. Therefore, when the loading motor 101 is operated, the rotational driving force is transmitted from the motor gear 102 to the cam gear C105 via the reduction gear A103 and the reduction gear B104.

  The cam plate 106 is engaged with a cylindrical boss 105a extending upward from the vicinity of one end of the gear 105b of the cam gear C105 by a groove 106a, and is attached to the upper surface of the chassis 100 so as to be movable in the front-rear direction. That is, as the cam gear C105 rotates, the cam plate 106 moves in the direction of arrow A, which is the discharge direction from the position where the disk is mounted on the turntable 116 to the position where the disk can be attached and detached, in other words, toward the front of the apparatus. Moving. Further, as the cam gear C105 rotates, the cam plate 106 moves in the direction of arrow B, which is the loading direction from the position where the disk can be attached / detached to the position where the disk is mounted on the turntable 116, in other words, the back of the apparatus. Move in the direction. Further, as shown in FIG. 19, the SW plate 107 is attached to the cam plate 106 so as to be integrally movable in the front-rear direction, and the arrow is moved by the SW plate spring 108 that connects the cam plate 106 and the SW plate 107. It is biased in the direction of the mark B.

  The cam plate 106 has guide holes 106b and 106c on its side surfaces, and regulates the height while supporting the cartridge holder 109 and the holder arm 110 as shown in FIGS. The cartridge holder 109 accommodates the disk cartridge 50, and its arm portion 109a is lifted and supported by a hook portion 110a of a holder arm 110 provided at the front portion of the chassis 100. Further, the burring portion on the side surface, in other words, the protruding hole portion 109c is fitted into the guide hole 106c on the side surface of the cam plate 106, and the position in the height direction is regulated and held by the guide hole 106c.

  The holder arm 110 has two left and right supporting points 100a and 100b extending in the direction of arrow D parallel to the rotational axis of the disk, which is upward from the front of the chassis 100, and two left and right fulcrum holes in the front of the holder arm 110. 110b and 110d are fitted and rotatably attached, and a burring portion 110c located at the rear left side is disposed in the guide hole 106b on the side surface of the cam plate 106, and the position in the height direction is determined by the guide hole 106b. Is regulated.

  The slider 111 is in the cartridge holder 109, and slider shafts 111a and 111b provided on the upper portion of the slider 111 move in the front-rear direction along the guide hole 109d on the upper surface of the cartridge holder 109, in other words, the loading direction. The disc cartridge 50 is engaged with the disc cartridge 50, and has a function of drawing the disc cartridge 50 in the loading direction inside the device or discharging the disc cartridge 50 from the inside of the device.

  The LD arm 112 is attached so as to be rotatable about a fulcrum shaft 109e protruding from the upper surface of the cartridge holder 109. As shown in FIG. 22, the tip 112a is slidably positioned in the mouth-shaped part 107a of the SW plate 107, and the slider shaft is located at the forked part 112b at the other end. 111a is held in sliding contact with this.

  Returning to FIG. 18, the recording head lifting lever A113 is attached to be rotatable about a shaft (not shown) of the chassis 100, one end 113a thereof is in sliding contact with the cam above the cam gear C105, and the other end 113b is recording. The head lift lever B114 is engaged with the left end portion 114a. The recording head raising / lowering lever B114 is attached to be rotatable about an axis (not shown) of the chassis 100, and the wall portion 114b is in sliding contact with the recording head 115. In this configuration, when the cam gear C105 rotates, the recording head raising / lowering lever B114 rotates through the swinging movement of the recording head raising / lowering lever A113 to bring the recording head 115 into contact with or away from the disk.

  In the disk recording / reproducing apparatus having the above-described configuration, when the disk is pulled in, the loading motor 101 is rotated counterclockwise as viewed from the rotation axis direction. At this time, the motor gear 102 also rotates counterclockwise. This rotation is transmitted to the cam gear C105 through the reduction gear A103 and the reduction gear B104 which are in mesh with each other. At this time, the cam gear C105 rotates counterclockwise, and the groove 106a of the cam plate 106 is engaged with the boss 105a of the cam gear C105, so that the cam plate 106 moves in the discharging direction.

  Further, since the tip end portion 112a of the LD arm 112 is pushed in the discharging direction by the mouth shape portion 107a of the SW plate 107, the LD arm 112 rotates counterclockwise. At this time, the slider 111 engaged with the disc cartridge 50 moves in the back of the apparatus, in other words, in the loading direction when the slider shaft A 111 a is pressed against the bifurcated portion 112 b of the LD arm 112.

  The cam plate 106 continues to move in the discharge direction even after the movement toward the back of the apparatus is completed. At this time, a burring portion 110c of the holder arm 110 located in the guide hole 106b on the side surface of the cam plate 106 and a burring portion 109c on the side surface of the cartridge holder 109 located in another guide hole 106c on the side surface of the cam plate 106 are respectively provided. It moves along the shape of the guide holes 106b and 106c.

  Accordingly, the burring portion 109c on the side surface of the cartridge holder 109 moves downward, in other words, in the direction of the arrow C. As a result, the cartridge holder 109 also moves downward, and the disk held inside the apparatus is lowered to a position where it is mounted on the turntable 116. Thereafter, when the position of the SW plate 107 is detected by a detection device (not shown), it is determined that the mounting is completed.

  Further, when the cam gear C105 continues to rotate, the arc portion of the groove 106a of the cam plate 106 and the boss 105a of the cam gear C105 come into sliding contact with each other, so that the cam plate 106 stops moving in the discharging direction, When the cam comes into contact with one end 113a of the recording head lifting lever 113, the recording head 115 is brought into contact with the disk via the recording head lifting lever B114. Thereafter, it is determined that the recording is possible by a detection device (not shown).

  When the disk is ejected, when the disk is mounted, in other words, when the disk is mounted on the turntable 116, the loading motor 101 rotates clockwise, so that the motor gear 102 also rotates clockwise. As in the case of pull-in, the rotation of the motor gear 102 is transmitted to the cam gear C105 via the reduction gear A103 and the reduction gear B104. At this time, the cam gear C105 is rotating clockwise, and the arc portion of the groove 106a of the cam plate 106 is in sliding contact with the boss 105a of the cam gear C105, so that the cam plate 106 stops moving and remains on the cam gear C105. The cam contacts the one end 113a of the recording head lifting lever 113. As a result, the recording head 115 is separated from the disk via the recording head lifting lever B114.

  Thereafter, the sliding contact of the boss 105a is released from the arc portion of the groove 106a of the cam plate 106, and the cam plate 106 moves in the loading direction. At this time, the burring portion 110c of the holder arm 110 located in the guide hole 106b on the side surface of the cam plate 106 and the burring portion 109c on the side surface of the cartridge holder 109 located in another guide hole 106c on the side surface of the cam plate 106 are respectively It moves in the upward direction along the guide, in other words, in the direction of the arrow D. As a result, the cartridge holder 109 also moves upward.

  Even after the upward movement is completed, the cam plate 106 continues to move in the loading direction. As a result, the distal end 112a of the LD arm 112 is pushed in the loading direction by the mouth-shaped portion 107a of the SW plate 107, so that the LD arm 112 rotates clockwise. At this time, the slider 111 engaged with the disc cartridge 50 moves the disc in the ejecting direction by the slider shaft A 111 a being pushed by the bifurcated portion 112 b of the LD arm 112. When the discharge is completed, the position of the cam plate 107 is detected by a detection device (not shown), and when it is determined that the discharge is completed, the rotation of the motor stops.

  However, in the conventional disk recording / reproducing apparatus as described above, the disk is retracted, mounted and ejected separately from the motor for rotating the disk at the time of disk recording / reproducing and the motor for operating the disk reading unit such as an optical pickup and recording. Since a dedicated loading motor for raising and lowering the head is required, the apparatus is disadvantageous in that it is difficult to reduce the thickness and weight of the apparatus and is expensive.

  In order to eliminate such problems, the disk recording / reproducing apparatuses of Patent Documents 1 to 3 and 5 use a disk rotation driving motor as a driving motor for other disk operations such as loading / unloading operations. It is configured to be used. The disk recording / reproducing apparatus disclosed in Patent Document 4 is an apparatus capable of holding a plurality of disks. The disk recording / reproducing unit moves the recording / reproducing unit up and down to position it at an arbitrary disk tray height, and the disk tray is stored in the disk. The second positioning means for raising and lowering the transfer means for transferring between the position, the position outside the apparatus, and the regeneration position is configured to be switched in the rotation direction of the motor.

JP-A-6-36515 Japanese Patent Laid-Open No. 7-73610 Japanese Patent Laid-Open No. 11-86400 JP-A-10-134475 JP 2004-280906 A

  However, in the configuration described in Patent Documents 1 to 4, a complicated configuration is required because the drive of the motor is used for transporting the disc or the operation of drawing and ejecting the disc is controlled. It is. Also, there is no disclosure of using the motor for a recording head lifting device. Further, even the configuration described in Patent Document 5 does not disclose the use of the motor as a lifting device for a recording head.

  An object of the present invention has been made in view of such problems, and a motor for moving a recording head up and down while pulling in, mounting and discharging a disk with a simple configuration is a motor for rotating a disk. Another object of the present invention is to provide a disc recording / reproducing apparatus that is also used.

The present invention comprises a rotating means for detachably mounting a disk for recording information and rotating the disk,
A transport means for transporting the disk, provided to be displaceable across a loading position for mounting the disk on the rotating means and a discharge position at which the disk can be attached and detached;
A recording / reproducing means having an operating portion displaceable over an operating position for recording or reproducing information in proximity to a disk rotated by the rotating means and a retracted position away from the operating position;
A driving means which is rotatable in the first and second directions, and which rotates the rotating means by rotating in the first direction, and which drives the conveying means and the operating unit by rotating in the first and second directions; ,
A state in which the rotational force of the driving means can be transmitted to the operating part of the conveying means and the recording / reproducing means, and a non-transmitting state in which the rotational force of the driving means is stopped to be transmitted to the operating part of the conveying means and the recording / reproducing means Switchable transmission means;
The transmission means can be displaced over a state holding position for holding the transmission means against a force based on a rotational force transmitted from the driving means to the conveyance means, and a holding release position for releasing the holding of the state of the transmission means. A disc recording / reproducing apparatus comprising transmission state holding means.

  According to the present invention, the disc recording / reproducing apparatus is provided with a transmission means capable of switching the state between a transmittable state and a non-transmittable state. When the transmission means is in a transmittable state, the rotational force of the drive means in the first and second directions can be transmitted to the transport means and the operation unit. When the state of the transmission unit is switched from the transmittable state to the non-transmitted state, the rotational force of the drive unit can be stopped from being transmitted to the transport unit and the operating unit. For example, when the driving means rotates in the first direction, the transmitting means switches the state from the transmittable state to the non-transmitting state, and when the driving means rotates in the second direction, the transmitting means changes from the non-transmitting state. In the case of switching the state to the transmittable state, even when the transmitting means is in the non-transmitting state, the state of the transmitting means is switched from the non-transmitting state to the transmittable state by rotating the driving means in the second direction. The rotational force of the driving means can be transmitted to the conveying means and the operating unit.

  In addition, when the transmission means is in a transmittable state, the transport means can be displaced over the charging position and the discharge position based on the transmitted rotational force of the drive means, and the operating unit can transmit the transmitted drive. Based on the rotational force of the means, it can be displaced over the operating position and the retracted position. Therefore, by switching the state of the transmission means, the rotational force of the drive means can be transmitted to the transport means and the operating part, or the transmission can be stopped.

  Further, the disc recording / reproducing apparatus is provided with transmission state holding means displaceable between a state holding position and a holding release position, and the transmission state holding means is arranged at the state holding position, so that the drive means to the conveying means. The transmission means can be held in a transmittable state against the force based on the rotational force transmitted to the transmission force, and the transmission state holding means is disposed in the holding release position, thereby maintaining the state of the transmission means. It can be canceled. As a result, the state of the transmission means can be displaced by the displacement of the transmission state holding means to the state holding position or the holding release position. Therefore, when the transmission state holding unit is displaced to the state holding position and the transmission unit is held in a transmittable state, the rotational force of the driving unit in the first and second directions is transmitted to the transport unit and the operating unit. When the transmission state holding means is displaced to the holding release position, the transmission means is released from the holdable state and is switched to the non-transmission state, the rotational force of the drive means is applied to the conveying means and the operating unit. Transmission can be stopped. For example, when the driving means rotates in the first direction, the transmitting means switches the state from the transmittable state to the non-transmitting state, and when the driving means rotates in the second direction, the transmitting means changes from the non-transmitting state. In the case of switching the state to the transmission enabled state, even if the transmission means is released from holding the transmission enabled state and switched to the non-transmission state, the transmission means rotates in the second direction of the driving means, so that the transmission means The state is switched from the state to the state where transmission is possible, and the rotational force of the driving means can be transmitted to the conveying means and the operating portion.

In the present invention, the transmission means
A drive gear coupled to the drive means;
By rotating and rotating, the conveying means is displaced in the charging direction from the discharging position to the charging position and in the discharging direction from the charging position to the discharging position, and the operating part of the recording / reproducing means is retracted An actuating gear for displacing in the proximity direction from the operating position to the operating position and in the separating direction from the operating position to the retracted position;
An idler gear which is provided rotatably and has a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where the transmission of the rotational force of the driving gear to the working gear is stopped. And

  According to the present invention, the transmission means is provided with an idler gear that can be displaced between the meshing position and the non-meshing position, and when the idler gear is displaced to the meshing position, the rotational force of the driving means, specifically, The rotational force of the drive gear connected to the drive means can be transmitted to the operating gear. As a result, the operating gear can displace the conveying means in the loading direction and the discharging direction, and can displace the operating portion in the proximity direction and the separation direction. Therefore, it is possible to transmit the rotational force of the driving means to the conveying means and the operating portion by the transmission means, specifically, the driving gear, the idler gear, and the operating gear.

Further, according to the present invention, when the rotational force in the first direction of the driving means is transmitted, the conveying means is driven to be displaced in one of the discharging direction and the loading direction, and the operating portion of the recording / reproducing means Is driven to move in one of the separation direction and the proximity direction,
When the rotational force in the second direction of the driving means is transmitted, the conveying means is driven to be displaced to the other of the discharging direction and the loading direction, and the operating part of the recording / reproducing means It is driven to be displaced in either direction of proximity,
The transmission means transmits a rotational force that displaces the conveying means in the loading direction and the discharging direction in a state in which transmission is possible and the operating part is in the retracted position, and in the state in which the conveying means is in the charging position, Rotational force that displaces in the approaching direction and the separation direction is transmitted to.

  According to the present invention, when the transmission means is positioned in the transmittable state, the conveying means can be displaced in the discharge direction and the loading direction based on the rotational force of the driving means in the first and second directions. In addition, the operating portion can be displaced in the separation direction and the proximity direction. Thus, when the rotational force in one rotational direction of the driving means is transmitted, the transporting means and the operating part can be displaced in one direction, and the rotational force in the other rotational direction of the driving means is transmitted. Then, the conveying means and the operating part can be displaced in the other direction.

  Further, the transmission means transmits a rotational force that causes the transfer means to be displaced in the loading direction and the discharging direction when the operating unit is in the retracted position in a transmittable state. Further, the transmission means transmits a rotational force that displaces the moving portion in the proximity direction and the separation direction when the conveyance means is in the loading position in a transmittable state. As a result, it is possible to avoid contact between the conveying means and the operating portion, and based on the rotational force of the driving means in the first and second directions, the disk can be conveyed in the loading direction and the discharging direction by the conveying means. it can. Further, the operating unit can be displaced in the approaching direction and the retracting direction based on the rotational force of the driving means in the first and second directions.

Further, the present invention provides a detecting means for detecting completion of loading of the disk with respect to the conveying means at the discharge position and completion of loading of the disk with respect to the rotating means,
Operation input means for inputting recording instruction information representing a recording instruction for recording information and reproduction instruction information representing a reproduction instruction for reproducing information;
Control means for controlling the driving means based on the input result by the operation input means and the detection result by the detection means.

  According to the present invention, the control means can control the drive means to rotate in the first direction and the second direction based on the detection result by the detection means and information input to the operation input means by the user. it can. Therefore, the rotation direction of the driving means can be controlled based on the completion of the disc mounting and the reproduction instruction or recording instruction by the user.

  According to the present invention, when the detection means detects that the disk is mounted on the conveying means, the control means switches the transmitting means to a transmittable state and rotates the driving means in the second direction. Features.

  According to the present invention, when the detection unit detects the completion of the mounting of the disc on the transport unit at the discharge position, the control unit switches the transmission unit to a transmittable state. The control means rotates the driving means in the second direction. Thereby, based on the detection result by the detection means, the control means can control to start the rotation of the drive means. Further, when the transmission unit is in a transmittable state, the rotational force of the drive unit in the second direction can be transmitted to the transport unit and the operation unit. Therefore, based on the detection result of the completion of the disk mounting by the detecting means, the control means switches the transmitting means to the transmittable state and rotates the driving means in the second direction, thereby moving the conveying means from the discharge position to the loading position. The disk can be transported in the loading direction. Here, the detection of the completion of the mounting of the disk by the detecting means may be performed by an operation in which the user mounts the disk at the mounting position at a position where the disk can be attached and detached and pushes the disk into the apparatus.

  In the present invention, when it is detected by the detecting means that the conveying means is displaced in the loading direction and the disk is placed in the loading position and the loading is completed, the recording instruction information is input. In this case, the rotation of the driving unit in the second direction is continued, and when the reproduction instruction information is input, the rotation of the driving unit in the second direction is stopped.

  According to the present invention, when the recording instruction information is input to the operation input means by the user, the detection means transfers the disk to the position where the rotation means is mounted, and when the completion of loading the disk is detected, The control means controls the driving means so as to continue the rotation in the second direction. As a result, the control means can transmit the rotational force of the drive means to the operating part, so that the operating part can be displaced between the retracted position and the operating position. Further, when the reproduction instruction information is input to the operation input means by the user, the control means stops the rotation of the drive means in the second direction when the detection means detects the completion of loading the disc. To control. As a result, the rotational force of the driving means can be stopped from being transmitted to the conveying means and the operating portion, so that the rotational force of the driving means is not transmitted to the operating portions of the conveying means and the recording / reproducing means.

  In the invention, it is preferable that the detection means is a switch means whose switching mode is switched by movement of the transport means.

  According to the present invention, the detection means is a switch means that is engaged and disengaged by the movement of the conveyance means. When the conveyance means is at a predetermined position, specifically, the detection means is located at the charging position and the discharge position. In this case, the conveying means and the detecting means are engaged. In addition, when the transport unit is located at a position other than that, specifically, a position displaced across the charging position and the discharge position, the transport unit and the detection unit are separated from each other. In other words, the switching mode of the detecting means is switched by the movement of the conveying means. Thus, depending on whether or not the conveying means is engaged with the detecting means, whether or not the position of the conveying means, specifically, the position where the disk is mounted on the rotating means or the position where the disk can be attached / detached is determined. Can be detected.

  More specifically, when the transport unit is configured to push the detection unit, in other words, the switch unit, when the disk is in a detachable position, the detection unit can eject the disk by pressing the switch unit. Can be detected. Further, when the disc is in the position where the disk is mounted on the rotating means, if the conveying means presses the detecting means, in other words, the switch means, the detecting means attaches the disk to the rotating means by pressing this switch means. Can be detected. Thus, the position of the disk can be detected with a simple configuration, and based on the detection result, the control means can be controlled to start, continue or stop the rotation of the driving means at a good timing.

  Further, the present invention is characterized in that the control means switches the state of the transmission means by controlling at least the rotation direction of the drive means among the position of the transmission state holding means and the rotation direction of the drive means.

  According to the present invention, the control means can switch the state of the transmission means, specifically the idler gear, between the meshing position and the non-meshing position by controlling the rotation direction of the driving means. Further, by controlling the rotation direction of the driving means and the transmission state holding means to the state holding position and the holding release position, the state of the transmission means, specifically the idler gear, can be switched between the meshing position and the non-meshing position. Therefore, the control means can switch the transmission state of the transmission means by controlling at least the rotation direction of the drive means among the position of the state holding means and the rotation direction of the drive means.

In the present invention, the transmission means
A drive gear coupled to the drive means;
An operation gear that is rotatably provided and rotates to displace the conveying means in the loading direction and the discharging direction, and to displace the operating portion of the recording / reproducing means in the proximity direction and the separation direction;
An idler gear which is rotatably provided and displaceable over a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where transmission of the rotational force of the driving gear to the working gear is stopped;
The idler gear receives a force in the mesh release direction from the meshing position toward the non-meshing position when the driving means rotates in the first direction, and when the drive means rotates in the second direction, the idler gear moves from the non-meshing position toward the meshing position. Under the force in the meshing direction,
The idler gear is arranged at the non-engagement position by disposing the transmission state holding means at the holding release position and rotating the driving means in the first direction.

  According to the present invention, the idler gear receives a force in the meshing release direction by the rotation of the driving means in the first direction and receives a force in the non-meshing release direction by the rotation of the driving means in the second direction. When the state holding means is disposed at the holding release position, the idler gear receives a force in the meshing release direction and can be displaced to the non-meshing position by the rotation of the driving means in the first direction. Therefore, the control means can displace the idler gear in the non-engagement direction only by the rotational force of the drive means in the first direction, and can be arranged at the non-mesh position, and the drive means can rotate in the first direction with a simple configuration. It is possible to prevent the force from being transmitted to the conveying means and the operating unit.

In the present invention, the transmission means
A drive gear coupled to the drive means;
An operation gear that is rotatably provided and rotates to displace the conveying means in the loading direction and the discharging direction, and to displace the operating portion of the recording / reproducing means in the proximity direction and the separation direction;
An idler gear which is rotatably provided and displaceable over a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where transmission of the rotational force of the driving gear to the working gear is stopped;
The idler gear is arranged at the meshing position by rotating the driving means in the second direction or by arranging the transmission state holding means at the state holding position when the driving means is rotated in the first direction. It is characterized by.

  According to the present invention, the idler gear receives a force in the meshing direction by the rotation of the driving means in the second direction, and is arranged at the meshing position. Further, when it is necessary to rotate the drive means in the first direction while keeping the position where the idler gear is located at the meshing position, the control means places the idler gear by placing the transmission state holding means at the state holding position. Hold in the meshing position. As a result, the idler gear can be disposed at the meshing position only by the rotational force of the driving means in the second direction. Further, by disposing the transmission state holding means at the state holding position in a state where the idler gear is located at the meshing position, the idler gear is not displaced to the non-meshing position, but is held in the meshing position in the first direction of the driving means. Can be transmitted to the conveying means and the operating portion.

Further, in the present invention, when the idler gear is disposed at the non-engagement position, information is recorded on or reproduced from the disc by the recording / reproducing means,
When the first idler gear is disposed at the meshing position, the disk is transported by a transport means.

  According to the present invention, when the idler gear is disposed at the non-engagement position, the disk can be rotated for reproduction or recording without transmitting the rotational force of the driving means to the conveying means and the operating portion. Further, when the idler gear is disposed at the meshing position, the rotational force of the driving means is transmitted to the idler gear, and the rotation of the idler gear is transmitted to the operating gear, so that it is transmitted to the conveying means and the operating portion, and conveys the disc. be able to.

  According to the present invention, when the idler gear is disposed at the meshing position, the driving unit rotates in the first direction, whereby the conveying unit is driven to be displaced in the discharge direction, and the driving unit rotates in the second direction. Thus, the conveying means is driven to be displaced in the loading direction.

  According to the present invention, by rotating the driving means in the first direction or the second direction in a state where the idler gear is disposed at the meshing position, the conveying means is discharged or inserted based on the rotation direction of the driving means. It can be displaced in the direction. Therefore, the displacement direction of the conveying means can be switched with a simple configuration.

According to the present invention, the conveying means is driven in the loading direction by rotating the driving means in the second direction from the state where the conveying means is in the discharge position with the idler gear arranged at the meshing position. The disk is transported to a position where the disk is mounted on the rotating means, and then the driving means is further rotated in the second direction so that the operating portion is driven in the proximity direction and disposed at the operating position.
From this state, when the driving means rotates in the first direction, the operating portion is driven in the separating direction and disposed at the retracted position, and then, further, the driving means rotates in the first direction, thereby conveying means. Is driven in the ejecting direction, and the disc is transported to a position where it can be attached and detached.

  According to the present invention, when the drive means is rotating in the second direction from the state in which the transport means is in the discharge position with the idler gear disposed at the meshing position, the disk can be attached and detached by the transport means. From the position, it is transported to a position where it is mounted on the rotating means and reaches a reproducible state. After that, the operation unit is driven in the proximity direction and placed at the operation position, and the reproducible state becomes the recordable state. Further, from this state, when the driving means rotates in the first direction, the operating portion is driven in the separating direction and is disposed at the retracted position, and the recording state is reached to the reproducible state. Can perform a series of operations to be transported from a position where it is mounted on the rotating means to a position where it can be attached and detached. Therefore, only by selecting the meshing position of the idler gear, the rotation of the driving means in the first and second directions causes a series of displacements of the disk to the recordable state and the reproducible state by the displacement of the disk and the operation unit. The operation can be switched.

  Further, the idler gear is disposed at the meshing position, and the rotational force of the driving means is transmitted to the conveying means and the operating portion via the idler gear, so that the operation in the two directions of loading and unloading of the disc and the proximity direction of the operating portion are separated. The driving means used for rotating the disk can be used for conveying the disk by the conveying means and displacing the operation unit.

  According to the present invention, by switching the state of the transmission means between the transmittable state and the non-transmittable state, the rotational force of the drive means can be transmitted to the conveying means and the operating unit, or the transmission can be stopped. . Further, when the transmission state holding means is displaced to the state holding position and the transmission means is held in a transmittable state, the rotational force of the driving means in the first and second directions can be transmitted to the conveying means and the operating unit. In addition, when the transmission means is released from the transmission enabled state and switched to the non-transmission state, the rotational force of the first and second rotations of the drive means can be stopped from being transmitted to the conveying means and the operating unit. Therefore, with a simple configuration, the rotational force of the driving means can be transmitted to the conveying means and the operating unit, or the transmission can be stopped, and the transmission path can be selected as necessary. In addition, it is possible to provide a disk recording / reproducing apparatus that retracts, mounts, and ejects the disk and displaces the operation unit by the driving means for rotating the disk.

  According to the present invention, the rotational force of the driving means can be transmitted to the conveying means and the operating portion by the transmission means, specifically, the driving gear, the idler gear and the operating gear, and the disk is loaded and ejected. And the operating part can be displaced. Therefore, it is possible to provide a disk recording / reproducing apparatus that has a simple configuration and that serves as a drive means for rotating and rotating the disk, as well as a drive means for drawing, mounting, and ejecting the disk and displacing the operating portion.

  According to the present invention, the disk is conveyed in the loading direction and the ejection direction by the conveying means based on the rotational force in the first and second directions of the driving means while avoiding the contact between the conveying means and the operating portion. In addition, the operating part can be displaced in the approaching direction and the retracting direction. Therefore, it is possible to provide a disk recording / reproducing apparatus that has a simple configuration and that serves as a drive means for rotating and rotating the disk, as well as a drive means for drawing, mounting, and ejecting the disk and displacing the operating portion.

  According to the present invention, the control means can control the drive means to rotate in the first direction and the second direction based on the detection result by the detection means and information input to the operation input means by the user. it can. Therefore, the rotation direction of the driving means can be controlled based on the completion of the disc mounting and the reproduction instruction or recording instruction by the user.

  According to the present invention, the control unit can start the rotation of the drive unit based on the detection result by the detection unit. Further, when the transmission unit is in a transmittable state, the rotational force of the drive unit in the second direction can be transmitted to the transport unit. As a result, the conveying means can be displaced in the loading direction from the discharge position toward the loading position, and the disk can be conveyed to the loading position. Therefore, with a simple configuration, the drive means and the transmission means can be controlled based on the detection result of the detection means detecting the completion of the disk installation, and the disk can be taken in the insertion direction.

According to the present invention, the control means continues the rotation of the driving means in the second direction when the recording instruction information is input based on the result of the completion of the loading of the disc by the detecting means, and the reproduction instruction When information is input, the rotation of the driving unit in the second direction can be stopped. As a result, the smooth operation continuity of the drive means can be maintained, or the operation of the drive means can be stopped. Further, by continuing the rotation of the driving means in the second direction, the rotational force of the driving means can be transmitted to the operating portion, so that the operating portion is displaced between the retracted position and the operating position, and the disc can be recorded. Or it can be in a reproducible state.
Therefore, the position of the disk can be detected with a simple configuration, and the rotation of the driving means can be continued or stopped as necessary.

  According to the present invention, the switching mode of the detecting means is switched by the movement of the conveying means. Therefore, depending on whether or not the conveying means is engaged with the detecting means, the position of the conveying means, specifically, whether or not the disk is mounted on the rotating means or whether or not the disk is detachable. Can be detected. Therefore, it is possible to detect the position of the disk with a simple configuration, and based on the detection result, the control means controls so as to continue or stop the rotation of the driving means in a timely manner. Can be smoothly transferred.

  According to the present invention, the control unit can switch the transmission state of the transmission unit by controlling at least the rotation direction of the drive unit among the position of the transmission state holding unit and the rotation direction of the drive unit. Therefore, with a simple configuration, the transmission state of the transmission unit can be switched, and the driving force of the driving unit can be transmitted to the conveyance unit and the operating unit, or the transmission can be stopped.

  According to the present invention, the control means can displace the idler gear in the non-meshing direction only by the rotational force of the driving means in the first direction, and can arrange the idler gear in the non-meshing position. Therefore, it is possible to prevent the rotational force in the first direction of the drive means from being transmitted to the transport means and the operation unit with a simple configuration.

  According to the present invention, the idler gear can be disposed at the meshing position only by the rotational force of the driving unit in the second direction, and the transmission state retaining unit is disposed at the state retaining position with the idler gear disposed at the meshing position. By doing so, the rotational force in the first direction of the driving means can be transmitted to the conveying means and the operating part without displacing the idler gear to the non-meshing position, and the operating part is displaced to the operating position and the retracted position. Can do. Therefore, with a simple configuration, the rotational force of the driving means in the first direction and the second direction can be transmitted to the conveying means and the operation unit, and the disk can be conveyed and the operation unit can be displaced.

  According to the present invention, when the idler gear is disposed at the non-engagement position, the disk can be rotated for reproduction or recording without transmitting the rotational force of the drive means to the transport means and the operation unit, and the idler gear can be In this case, the rotational force of the driving means is transmitted to the idler gear, and further, the rotation of the idler gear is transmitted to the operating gear, so that the disk is transported to the transporting means and the operating portion. Therefore, by disposing the idler gear at the non-meshing position or the meshing position, information can be recorded or reproduced with respect to the disk, or the disk can be transported, so that the disk can be transported and the disk can be recorded with a simple configuration. Playback operation can be performed.

  According to the present invention, in the state where the idler gear is arranged at the meshing position, the displacement of the conveying means in the discharge direction and the charging direction can be displaced in the rotation direction of the driving means. The displacement direction can be switched, and the disk can be automatically conveyed.

  According to the present invention, only by selecting the meshing position of the idler gear, the rotation of the driving means in the first and second directions brings the disk into the recordable state and the reproducible state due to the transport of the disk and the displacement of the operation unit. It is possible to switch a series of operations of displacement. Accordingly, it is possible to carry out the operation of the disc transport, the displacement of the operation unit, and the disc recording / reproducing operation with a simple configuration, and the disc recording / reproducing apparatus can be thinned.

  Further, the operation unit provided in the recording / reproducing means in conjunction with the disk transport operation can be displaced over the operation position and the separation position. In other words, when the operating unit is displaced to the operating position, recording can be performed on the disc, and when the operating unit is displaced to the separation position, the disc can be reproduced and transported. According to this, the drive means used for disk rotation for disk recording and reproduction can be used to transport the disk over the position where the disk is mounted on the rotation means and the position where the disk can be attached and detached. It is possible to reduce the manufacturing cost of the driving means and reduce the thickness of the disk recording / reproducing apparatus.

  FIG. 1 is a plan view showing a portion forming the center of a disk recording / reproducing apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the disc recording / reproducing apparatus shown in FIG. The disc recording / reproducing apparatus of the present invention includes a chassis 1, a drive unit 40 that constitutes drive means, a turntable 3 that constitutes rotation means, a connecting part 41 and a drive transmission part 42 that constitute transmission means, and conveyance means. A disc guide 43 that constitutes a detection unit, a detection unit 44 that constitutes a detection unit, a motor control unit 60 that constitutes a control unit, an optical pickup 26 and a recording unit 45 that constitute an operation unit provided in the recording / reproducing unit, It has an optical pickup detection unit 46 that constitutes a transmission state holding unit, and an operation input unit 70. The recording unit 45 provided in the recording / reproducing means has a recording head 31, and the recording head 31 has a function of supplying a magnetic field to the disk. The optical pickup 26 has a function of supplying a laser spot to the disk. The disk recording / reproducing apparatus writes information in the disk cartridge 50 and reads information written in the disk cartridge 50 by the functions of the recording head 31 and the optical pickup 26.

  The chassis 1 is a body portion that supports the disk recording / reproducing device. The chassis 1 includes a drive unit 40, a turntable 3, a connection unit 41, a drive transmission unit 42, a disk guide unit 43, a detection unit 44, and a motor control unit 60. An optical pickup 26, a recording unit 45, an optical pickup detection unit 46, an operation input means 70, and the like are provided.

  3 is a cross-sectional view taken along the broken line ee in FIG. The drive unit 40 includes a spindle motor 2, a mounting plate 2 a, a motor rotation shaft 2 b, and a motor gear 4. The drive unit 40 drives the disk rotation and the disk cartridge 50 drawing and discharging conveyance operation and the recording head 31 lifting and lowering operation. It is a source. The spindle motor 2 is attached to the chassis 1 by screws, in other words, screws or the like, through an attachment plate 2a. The spindle motor 2 is a rotational drive source, and rotates a motor rotating shaft 2b that protrudes above the spindle motor 2. The motor rotating shaft 2b rotates a turntable 3, a motor gear 4 or a motor arm 5 which will be described later fixed to the motor rotating shaft 2b. The motor gear 4 is fixed to the root portion of the motor rotating shaft 2b on the spindle motor 2 side, and is a gear for utilizing the rotational driving force of the spindle motor 2 for transporting the disk cartridge 50 and raising / lowering the recording head 31. is there.

  The turntable 3 is disposed at the tip of the motor rotating shaft 2b, and a disk is placed on the turntable 3 to rotate the disk. Further, by rotating the disk with the turntable 3, information can be read from or written to the disk using the recording head 31 and the optical pickup 26.

  The connecting portion 41 includes a motor arm 5, a compression spring 6, a washer 7, a support shaft 5 a, an idler arm 8, an arm regulating shaft 8 a, an idler gear 9 and a washer 10, and the rotation of the motor gear 4 and the conveyance of the disk cartridge 50 are included. The disk guide 43 and the recording head 31 are transmitted to the recording unit 45 that moves up and down.

  The motor arm 5 is connected to the motor rotation shaft 2b between the motor gear 4 and the turntable 3, and is inserted into the motor rotation shaft 2b between the compression spring 6 and the turntable 3 installed in a compressed state. The urging force generated by the washer 7 is configured to rotate in the same direction as the rotation direction of the motor rotating shaft 2b. Further, the motor arm 5 is connected to the support shaft 5a together with the idler arm 8 at the end opposite to the connection portion of the motor rotation shaft 2b, and is configured to be rotatable by the support shaft 5a.

  The idler arm 8 is fixed by a washer 10 to an arm regulating shaft 8 a to which an idler gear 9 is fixed to the idler arm 8 at the end opposite to the connecting portion of the motor arm 5. By providing the idler arm 8, the idler gear 9 can be displaced to a meshing position that meshes with both the motor gear 4 and the intermediate gear A13 and a non-meshing position that does not mesh with both the motor gear 4 and the intermediate gear A13. The idler gear 9 is configured to be rotatable around the arm regulating shaft 8a. That is, the idler gear 9 moves through the motor arm 5 and the idler arm 8 with the rotation of the motor rotating shaft 2b. At this time, since the upper end portion of the arm regulating shaft 8a is located in the guide hole 1a provided in the chassis 1, the movement range of the idler gear 9 is restricted, and the rotation ranges of the motor arm 5 and the idler arm 8 are also set. It is regulated within a certain range.

  FIG. 8 is a plan view showing the meshed state of the motor gear 4, the idler gear 9, the intermediate gear A13, and the intermediate gear B14 during recording and reproduction of the disk recording / reproducing apparatus. As shown in FIG. 1, the guide hole 1a is obliquely formed. Specifically, when the pitch circle diameters of the motor gear 4 and the intermediate gear A13 are substantially the same, the guide hole 1a It is formed extending in a substantially vertical direction with respect to a line passing through the axis and the axis of the motor rotating shaft 2b. The arm restricting shaft 8a is displaced along the guide hole 1a. Specifically, the arm regulating shaft 8a is displaced in the direction of the arrow Q, which is the meshing direction, and is displaced in the direction of the arrow P, which is the one end of the guide hole 1a, and the arrow P direction, which is the meshing release direction. , It is displaced over the back end of the apparatus which is the other end of the guide hole 1a. Accordingly, when the position of the guide hole 1a shown in FIG. 8, in other words, the arm restriction shaft 8a is brought into contact with the end of the apparatus at the back of the guide hole 1a and the position is restricted, the idler gear 9 is connected to the motor gear 4 and an intermediate position described later. The gear A13 is moved away from the gear A13 to a non-meshing position where it does not mesh. In other words, the rotational force of the spindle motor 2 is displaced to a non-transmitting state where it is not transmitted to the disk guide part 43 and the recording part 45. Further, when the position of the guide hole 1a shown in FIG. 1, in other words, the arm restriction shaft 8a is brought into contact with the front end of the guide hole 1a and the position is restricted, the idler gear 9 is connected to the motor gear 4 and an intermediate position described later. It is displaced to a meshing position that meshes with the gear A13. In other words, the rotational force of the spindle motor 2 is displaced to a transmittable state in which the rotational force of the spindle motor 2 is transmitted to the disk guide unit 43 and the recording unit 45.

  The position of the idler gear 9 is determined by the rotation direction of the motor gear 4. That is, when the spindle motor 2 rotates in the direction of the arrow f shown in FIG. 8, in other words, in the clockwise direction, that is, in the recording / reproducing rotation direction of the disc, the motor arm 5 also rotates in the clockwise direction. The idler arm 8 moves in the direction of the arrow B that is the loading direction toward the position where the disk is mounted on the turntable 3 from the back of the apparatus, in other words, from the position where the disk can be attached and detached. The idler gear 9 is displaced in the direction of the arrow P that is the mesh release direction. When the arm restricting shaft 8a reaches the rear end of the guide hole 1a, the idler gear 9 is displaced to the non-meshing position away from the motor gear 4 and the intermediate gear A13, so that the rotation of the motor gear 4 is moved to the intermediate gear A13. No transmission is made and the intermediate gear A13 does not rotate.

  On the other hand, as shown in FIG. 1, when the spindle motor 2 rotates in the direction of the arrow g, the motor arm 5 also rotates in the same direction, and accordingly, the idler arm 8 is in front of the apparatus, in other words, the disk is turned. It moves in the direction of arrow A, which is the ejection direction from the position where it is mounted on the table 3 toward the position where the disk can be attached and detached. The idler gear 9 is displaced in the arrow Q direction, which is the non-meshing release direction. When the arm regulating shaft 8a reaches the front end of the guide hole 1a, the idler gear 9 is displaced to the meshing position where it meshes with both the motor gear 4 and the intermediate gear A13, so that the rotation of the motor gear 4 causes the idler gear 9 to rotate. To the intermediate gear A13.

  As shown in FIG. 3, the drive transmission unit 42 includes an intermediate gear A13, a washer 12, a support shaft 1b, an intermediate gear B14, a support shaft 1c, and the cam gear 16. When the rotational force of the spindle motor 2 is transmitted to the intermediate gear A13 and the intermediate gear B14 by the connecting portion 41, the rotational force is transmitted to the cam gear 16 by meshing of the gears.

  The intermediate gear A13 has a large gear portion 13a and a small gear portion 13b, is rotatably supported around the support shaft 1b, and is prevented from being removed by the washer 12. The intermediate gear B14 has a large gear portion 14a and a small gear portion 14b, and is supported rotatably about the support shaft 1c of the chassis 1. The large gear portion 14a is a small gear portion of the intermediate gear A13. It is comprised so that it may mesh with 13b. Further, the cam gear 16 is rotatable and a cylindrical portion 16a extending downward from the center of the lower surface of the cam gear 16 is inserted into the hole 1d of the chassis, and the gear portion 16b of the cam gear 16 is connected to the small gear portion 14b of the intermediate gear B14. It is comprised so that it may mesh. Therefore, when the motor gear 4 rotates counterclockwise, as described above, the large gear portion 13a of the intermediate gear A13 is engaged with the idler gear 9 by the connecting portion 41, whereby the rotational force of the spindle motor 2 causes the idler gear 9 to rotate. To the intermediate gear A 13, to the intermediate gear B 14, and further to the cam gear 16.

  A cylindrical boss 16 c extending upward is integrally formed with the cam gear 16 in the vicinity of the outer peripheral portion of the upper surface of the cam gear 16. The boss 16 c is fitted in a groove portion 17 a of a cam plate 17 installed above the cam gear 16. A cylindrical boss 16 d extending downward is formed integrally with the cam gear 16 in the vicinity of the outer peripheral portion of the lower surface of the cam gear 16. The boss 16d is arranged so as to be in contact with a cam lever 33 (described later) installed below the cam gear 16. In FIG. 3 showing the ee cross-sectional view of FIG. 1, the boss 16d is not originally shown, but in order to conceptually show that it is formed on the lower surface of the cam gear 16, it has been rotated to the paper surface in FIG. Illustrated in position.

  FIG. 4 is a plan view showing a component configured in an upper space of the component shown in FIG. FIG. 5 is a side view of the disc recording / reproducing apparatus shown in FIG. 6 is a plan view showing a part of the component shown in FIG. 4 in an extracted state, and FIG. 7 is a side view showing a part of the component shown in FIG. The disk guide portion 43 includes a cam plate 17 and a SW plate 18 that are driven members, an LD arm 22 and a slider 20 as transfer arms, a cartridge holder 19, and a holder arm 21. The cam plate 17 is attached to the upper surface of the chassis 1 so as to be movable in the front-rear direction, in other words, in the discharging direction and the loading direction, and the boss 16c is rotated by the rotation of the cam gear 16 described above. The 17 groove portions 17a are pressed, and the cam plate 17 moves in the discharging direction or the loading direction.

  Further, as shown in FIG. 5, guide holes 17b and 17c extending mainly in the front-rear direction are provided on the side surface of the cam plate 17, and a burring portion 19c of the cartridge holder 19 and a burring portion 21c of the holder arm 21, which will be described later, respectively. Are mated. The guide holes 17b and 17c are formed in parallel to the ejection direction and the loading direction, but the vicinity of the end in the loading direction is perpendicular to the ejection direction and the loading direction and parallel to the rotation axis of the disk. In such a direction, the recording head extends obliquely in the direction of arrow C, which is a proximity direction from the retracted position to the operating position.

  The SW plate 18 is attached to the cam plate 17 so as to be movable in the front-rear direction. The SW plate 18 is connected to the cam plate 17 by the SW plate spring 23 and is urged toward the back of the apparatus, in other words, the loading direction. The SW plate 18 moves integrally with the cam plate 17. Further, the SW plate 18 is in sliding contact with a distal end portion 22 a of an LD arm 22 which will be described later, and transmits the movement operation of the cam plate 17 forward and backward to the LD arm 22.

  The LD arm 22 is attached so as to be rotatable about a fulcrum shaft 19e that protrudes from the upper surface of the cartridge holder 19, and a tip portion 22a of the LD arm 22 is slidable in the mouth shape portion 18a of the SW plate 18. Located in a state. Therefore, the LD arm 22 swings as the SW plate 18 moves back and forth. Further, a bifurcated portion 22b at the end opposite to the tip portion 22a across the fulcrum shaft 19e is in sliding contact with the slider shaft 20a of the slider 20, which will be described later. Therefore, the swing of the LD arm 22 is transmitted to the slider 20.

  The slider 20 is located in the cartridge holder 19 and engages with the disk cartridge 50 to draw the disk cartridge 50 into the apparatus, in other words, to draw in the loading direction or to discharge from the apparatus to the discharging direction. It is. The slider 20 has slider shafts 20a and 20b at the upper part thereof, and the slider 20 moves along the guide hole 19d on the upper surface of the cartridge holder, so that the disc cartridge 50 is smoothly discharged in the front-rear direction. It can move in the entry direction. The swinging of the LD arm 22 moves the slide shaft 20a in the ejection direction or the loading direction, and accordingly moves the disk cartridge 50 in the ejection direction or the loading direction to perform the drawing and ejection operations. .

  The cartridge holder 19 accommodates the disc cartridge 50, and the arm portion 19 a is lifted and supported by the hook portion 21 d of the holder arm 21. The burring portion 19c on the side surface of the cartridge holder 19 is fitted in the guide hole 17c on the side surface of the cam plate 17, and the position in the height direction is regulated and held by the guide hole 17c. Therefore, when reading or writing information on the disc, the cartridge holder 19 is guided to the guide hole 17c when the cam plate 17 is moved to the extreme end in the ejection direction and the burring portion 19c is positioned at the oblique slide portion. Move in the proximity direction.

  In addition, when the disk is replaced or discharged when the disk is discharged, the cam holder 17 is moved in the loading direction. Conversely, the cartridge holder 19 is rotated in a direction perpendicular to the discharging direction and the loading direction and the rotation of the disk. In the direction parallel to the axis, the recording head moves away from the operating position from the operating position where information is recorded or reproduced close to the disk rotated by the turntable 3, and the arrow is a separating direction from the operating position. Move in the direction of the symbol D. As described above, when the cartridge holder 19 is moved away from the disk when the disk is replaced, the disk can be inserted and removed smoothly.

  The holder arm 21 is for supporting the cartridge holder 19 and is provided at the front part of the chassis 1, and is supported at two left and right support parts 1 f and 1 g extending in the separating direction and left and right at the front part of the holder arm 21. The two fulcrum holes 21a and 21b are fitted and rotatably mounted, and the burring portion 21c located on the left rear is located in the guide hole 17b on the side surface of the cam plate 17, and the guide hole The position in the height direction is regulated by 17b.

  The guide hole 17b has the same shape as the guide hole 17c. Similar to the cartridge holder 19 guided by the guide hole 17c, the holder arm 21 is also guided by the guide hole 17b and is close to the disk reading or writing. Rotate in the direction, and in the direction of separation when replacing the disk.

  As shown in FIG. 2, the detection unit 44 includes a SW plate 18, a loading detection switch 24, a loading position detection switch 25, and an LD arm 22, and detects what state the disk cartridge 50 is in. is doing. In a state where the disk cartridge 50 is completely inserted, the SW plate 18 is positioned at the extreme end in the ejection direction, and one end 18b of the SW plate 18 pushes the loading position detection switch 25 disposed in the chassis 1. . On the other hand, when the disk cartridge 50 is ejected, the SW plate 18 is positioned at the extreme end in the loading direction, and one end 18b pushes the loading detection switch 24 disposed in the chassis 1.

  In a state in which the loading position detection switch 25 is pressed, the driving of the spindle motor 2 can be selected depending on the operation mode in which the next operation is reproduction or recording. Further, in the state where the disc ejection is completed and the loading detection switch 24 is pressed, the rotation of the spindle motor 2 in the arrow g direction can be stopped.

  The recording / reproducing means has an optical pickup and a recording unit 45. The recording unit 45 includes a recording head 31, a head lever 32, a cam lever 33, and a cam lever detection switch 34, and has a function of converting the rotation of the cam gear 16 into an ascending / descending operation of the recording head 31. First, the optical pickup 26 can be moved by an unillustrated slide driving device in an inner circumferential direction, in other words, in a direction approaching the turntable 3, and in an outer circumferential direction, in other words, in a direction away from the turntable 3. .

  FIG. 9 is a plan view showing main components when the disk is inserted, and FIG. 10 is a side view thereof. FIG. 11 is a side view showing the recording head 31 and the head lever 32 of FIG. FIG. 12 is a plan view showing main components at the time of transition to the recording state, and FIG. 13 is a side view thereof. FIG. 14 is a side view showing the recording head 31 and the head lever 32 of FIG.

  In the recording head 31, as shown in FIG. 11, the main body 31a of the recording head 31 is fixed to the optical pickup 26 with screws or the like. The head lever 32 is pivotally attached to the chassis 1 by a fulcrum hole 32a at one end and a fulcrum hole 32d at the other end, and is urged clockwise by a spring, in other words, by the spring 81 around the fulcrum hole 32a. Has been. A wall surface 32 b at the center of the head lever 32 is positioned so as to be in sliding contact with one end 31 b of the arm portion of the recording head 31.

  The cam lever 33 is attached to the chassis 1 so as to be rotatable about a fulcrum hole 33a. One end of the cam lever 33 is positioned so as to be in contact with the boss 16d of the cam gear 16, and the other end boss 33b is connected to the head lever 32. It is positioned so as to be able to contact the lower end 32c. Accordingly, in FIG. 11, since the head lever 32 is urged clockwise by the urging force of the spring 81, the wall surface 32b presses the one end 31b of the arm portion of the recording head 31 and moves the recording head core portion 31c upward. Direction, in other words, it is pushed up in the direction of separation. At this time, the disk cartridge 50 and the recording head 31 do not come into contact with each other and a sufficient gap is provided while the disk cartridge 50 is being transported and loaded.

  In the disk recording / reproducing apparatus shown in FIGS. 9 and 12, when the cam gear 16 rotates in the direction of the arrow g, in other words, counterclockwise and the boss 16d presses the cam lever 33, the cam lever 33 is moved to the head by the boss 33b. By pressing the lower end 32c of the lever 32, the recording head 31 and the head lever 32 are displaced from the state shown in FIG. 11 to the state shown in FIG. At this time, the head lever 32 is rotated counterclockwise against the biasing force of the spring 81. Along with this, while the one end 31b of the arm portion of the recording head 31 and the wall surface 32b of the head lever 32 slide, the recording head core portion 31c descends to a position where it comes into sliding contact with the disk. In other words, it is in a recordable state. In this state, the cam lever 33 presses the cam lever detection switch 34, and the motor control unit 60 determines that the recording is possible and stops the rotation of the spindle motor 2 in the arrow g direction.

  As shown in FIG. 1, the optical pickup detection unit 46 includes a pickup lever 35, a pickup detection switch 36, and a pickup inner circumference detection switch 37. First, the pickup lever 35 has long holes 35b and 35c, and is provided so as to be displaceable in the left-right direction along the long holes 35b and 35c, in other words, in the arrow X direction and the arrow Y direction. 80 is biased in the right direction, in other words, in the arrow Y direction. Here, the arrow X direction and the arrow Y direction are directions perpendicular to the arrow A direction and the arrow B direction, and are directions perpendicular to the arrow C direction and the arrow D direction. . Further, by contacting the hook portion 35a of the pickup lever 35 and the tip portion 5b of the motor arm 5, the idler gear can be transmitted against the force based on the rotational force transmitted from the spindle motor 2 to the disk guide portion 43. The holding release direction from the holding state holding position to the holding releasing position for releasing the holding of the idler gear state is taken as an arrow Y direction, and the state holding direction from the holding releasing position toward the state holding position is taken as an arrow X direction. The right end portion of the pickup lever 35 in the holding release direction is positioned so as to be in contact with the optical pickup 26, and the left end portion in the state holding direction is positioned so as to be in contact with the motor arm 5.

  The pickup detection switch 36 is arranged so as to be slidable in contact with the outer portion 26b of the front part of the optical pickup 26, and is arranged so as to detect a state where the motor arm 5 and the pickup lever 35 are separated as shown in FIG. Has been. In this state, the idler gear 9 can be displaced to a meshing position that meshes with the motor gear 4 and the intermediate gear A13. The motor arm 5 can be rotated clockwise as the spindle motor 2 rotates in the direction of arrow f. The pickup inner circumference detection switch 37 is positioned so as to face the protruding portion 26a protruding from the rear side surface of the optical pickup 26, and the optical pickup 26 is in the innermost circumference, in other words, close to the center of the disk cartridge 50. It is arranged so that the position can be detected.

  FIG. 15 is a plan view showing main components at the start of the transition from the recording state to the reproduction state, and FIG. 16 is a plan view showing the main components at the completion of the transition from the recording state to the reproduction state. As shown in FIGS. 15 and 16, when the optical pickup 26 is located at the innermost circumference, the pickup lever 35 is pressed to the left by the optical pickup 26 against the urging force of the spring 80. At this time, the L-shaped tip portion 5b of the motor arm 5 is positioned to face the hook portion 35a of the pickup lever 35. In this state, the clockwise rotation of the motor arm 5 is restricted by the tip portion 5b of the motor arm 5 and the hook portion 35a of the pickup lever 35 coming into contact with each other via the connecting portion 41 and the drive transmission portion 42. The rotation of the spindle motor 2 in the direction of arrow f can be transmitted to the cam gear 16. In this manner, the rotation of the motor arm 5 in the clockwise direction is restricted by the position of the optical pickup 26 so that the rotation of the spindle motor 2 in the direction of the arrow f can be transmitted to the cam gear 16.

  FIG. 17 is a plan view showing a state in which the idler gear 9 is disposed at a meshing position where the idler gear 9 meshes with the motor gear 4 and the intermediate gear A13.

  The pickup lever 35 has long holes 35b and 35c, and is provided so as to be displaceable in the left-right direction along the long holes 35b and 35c, in other words, in the state holding direction and the holding release direction. In other words, it is biased in the holding release direction.

  The guide hole 1a is inclined, specifically, when the pitch circle diameters of the motor gear 4 and the intermediate gear A13 are substantially the same, the axis of the support shaft 1b and the axis of the motor rotation shaft 2b. Is formed so as to extend in a substantially vertical direction with respect to the line Z passing through. The arm restricting shaft 8a displaces the guide hole 1a across the device back side end and the device front side end. In other words, the arm regulating shaft 8a is displaced in the arrow Q direction that is the meshing direction and in the arrow P direction that is the meshing release direction. When the arm restricting shaft 8a is displaced in the meshing direction and reaches the front end of the apparatus, the arm restricting shaft 8a is disposed on a line Z passing through the axis of the motor rotating shaft 2b and the axis of the support shaft 1b. When the arm regulating shaft 8a is displaced in the meshing release direction and reaches the rear end of the device, the idler gear does not mesh with the motor gear 4 and the intermediate gear A13. By forming the guide hole 1a in this way, the size of the guide hole 1a can be reduced to the minimum necessary size, and the downsizing of the disk recording / reproducing apparatus can be realized.

  Further, in the front end portion 5a of the motor arm 5, the engaging surface 5c that engages with the hook portion 35a of the pickup lever 35 is in contact with the hook portion 35a of the pickup lever 35. As shown, at the position to be locked, it is formed to be a plane perpendicular to the discharge direction and the loading direction. Further, the locking surface 35d of the hook portion 35a of the pickup lever 35 is also formed to be a plane perpendicular to the discharging direction and the loading direction, in other words, a plane parallel to the holding release direction and the state holding direction. . Therefore, when the locking surface 5c of the motor arm 5 and the locking surface 35d of the pickup lever 35 come into contact with each other and the motor arm 5 receives a force in the loading direction, more specifically, the idler gear moves in the meshing release direction. When receiving a force, the tip 5a of the motor arm 5 is guided in the locking direction by the hook 35a of the pickup lever 35, so that the tip 5a of the motor arm 5 and the hook 35a of the pickup lever 35 are guided. Is difficult to come off and can maintain the locked state.

  Further, the front end portion 5a of the motor arm 5 is in contact with the hook portion 35a of the pickup lever 35 and, as shown in FIG. Both surfaces 35d are formed so as to be parallel to the holding release direction and the state holding direction, which are the movement directions of the pickup lever 35, so that the pickup lever 35 is moved in the holding release direction and the state holding direction. Can be easily engaged and disengaged.

  Next, the operation of the disc recording / reproducing apparatus according to the present embodiment will be described. First, the case where the disk recording / reproducing apparatus of the present invention performs disk drawing and loading will be described. At this time, the disc cartridge 50 has come out of the disc recording / reproducing apparatus, and the SW plate 18 is positioned at the extreme end in the loading direction and the loading detection switch 24 is being pushed.

  When the user inserts the disk cartridge 50 into the loading / unloading direction from the position where the disk cartridge 50 is attachable / detachable into the disk recording / reproducing apparatus of the present invention, the slider 20 engaged with the disk cartridge 50 moves inside the cartridge holder 19 toward the back of the apparatus. In other words, it moves in the loading direction, the slider shaft 20a presses the bifurcated portion 22b of the LD arm, and the LD arm 22 rotates counterclockwise. At this time, the tip 22a of the LD arm located in the mouth-shaped portion 18a of the SW plate 18 presses the SW plate 18, and the SW plate 18 slightly moves in the front direction of the apparatus, in other words, in the discharge direction. Moving.

  As a result of this movement, the one end 18b below the SW plate 18 that has been pushing the loading detection switch 24 is separated from the loading detection switch 24, so that the circuit system as the motor control unit 60 determines that the disk pull-in is started, At the same time as the spindle motor 2 is rotated in the direction of the arrow g, the optical pickup 26 is moved until the pickup detection switch 36 detects the optical pickup 26.

  When the spindle motor 2 rotates in the arrow g direction, the motor arm 5 is rotated in the same direction as the motor rotating shaft 2 b by the frictional force generated by the compression spring 6 and the washer 7. As a result, the arm regulating shaft 8a of the idler arm 8 abuts against the front end portion of the apparatus which is one end portion of the guide hole 1a while rotating along the guide hole 1a, and its rotation is restricted, and FIG. It will be in the state shown in.

  Therefore, since the idler gear 9 is engaged with both the motor gear 4 and the intermediate gear A13, the rotation of the counterclockwise motor gear 4 is transmitted to the intermediate gear A13 via the idler gear 9, and is transmitted to the cam gear 16 via the intermediate gear B14. Communicated. At this time, the cam gear 16 rotates in the arrow g direction. The boss portion 16c on the upper surface of the cam gear 16 presses the groove hole portion 17a of the cam plate 17 in the discharging direction as the cam gear 16 rotates, so that the state moves from the state of FIG. 1 to the state of FIG.

  As the cam plate 17 moves, the SW plate 18 also moves in the discharge direction, so that the mouth-shaped portion 18a of the switch follower member pushes the tip end portion 22a of the LD arm in the discharge direction, thereby rotating the LD arm 22 counterclockwise. Turn to. The bifurcated portion 22b of the LD arm 22 pushes the slider shaft 20a in the loading direction, and moves the slider 20 and the disk cartridge 50 toward the back of the apparatus, in other words, in the loading direction.

  Even after the movement toward the back of the apparatus is completed, the cam plate 17 continues to move in the discharging direction, and the burring portion 21c of the holder arm 21 located in the guide hole 17b on the side surface of the cam plate 17 and the side surface of the cam plate 17 are located. The burring portion 19c on the side surface of the cartridge holder 19 located in another guide hole 17c moves downward, in other words, in the proximity direction along the inclined surfaces of the guide holes 17b and 17c.

  As a result, the cartridge holder 19 also moves downward, and the disk cartridge 50 inserted into the apparatus is lowered to the loading position. Thereafter, the cam plate 17 further moves in the discharging direction. When the loading position detection switch 25 detects that the cam plate 17 has reached the loading position, the motor control unit 60 determines that the mounting is completed, and the next The rotation of the spindle motor 2 is controlled based on the instructed operation.

  Further, the wall surface 32 b of the head lever 32 is in a state where the one end 31 b of the recording head 31 is pressed by the biasing force of the spring 81. Therefore, as shown in FIG. 11, the recording head core portion 31c is pushed upward, in other words, in the separating direction, so that there is no hindrance to the conveyance of the disk cartridge 50.

  Next, the operation at the time of reproducing the disk cartridge 50 will be described. When the disk cartridge 50 is mounted on the turntable 3 which is a rotating means, the disk recording / playback apparatus is in a standby state in which a disk is loaded but recording / playback is not performed. Does not cause any movement. When the reproduction instruction information indicating the reproduction instruction is input to the operation input means 70 provided in the disk recording / reproducing apparatus, the spindle motor 2 rotates in the direction of arrow f. As a result, the turntable 3 provided on the motor rotating shaft 2b rotates, and reproduction is performed by rotating the disk.

  At this time, the motor arm 5 whose one end is connected to the motor rotation shaft 2b of the spindle motor 2 has a frictional force generated by the rotation of the spindle motor 2 by the compression spring 6 and the washer 7 at the connection portion with the motor rotation shaft 2b. Is rotated in the same direction as the motor rotating shaft 2b. Along with this, the idler arm 8 connected to the other end of the motor arm 5 also rotates in the same direction as the motor rotating shaft 2b.

  As shown in FIG. 8, the idler arm 8 has an arm regulating shaft 8a at the end opposite to the portion connected to the motor arm 5, and the arm regulating shaft 8a meshes along the guide hole 1a. It is displaced in the release direction, and is brought into contact with the back end of the apparatus which is the other end of the guide hole 1a. Therefore, the idler gear 9 is in a non-meshing state separated from the motor gear 4 and the intermediate gear A13. Therefore, even if the spindle motor 2 rotates in the direction of the arrow f, the idler gear 9 and the intermediate gear A13 do not rotate. The rotation is not transmitted to the gear train after A13. Similarly to the above-described conveyance of the disk cartridge 50, the recording head core 31c of the recording head 31 is pushed upward, in other words, away from the disk, and is sufficiently separated from the disk. It will never be done.

  Next, the operation during recording of the disk cartridge 50 will be described. When recording instruction information representing a recording instruction is input to the operation input means provided in the disk recording / reproducing apparatus in a state where the disk is mounted on the turntable 3, the spindle motor 2 rotates in the direction of arrow g. Since the idler gear 9 is engaged with both the motor gear 4 and the intermediate gear A13, the counterclockwise rotation of the motor gear 4 is transmitted to the intermediate gear A13 via the idler gear 9, and the cam gear 16 passes through the intermediate gear B14. Is transmitted to.

  At this time, the cam gear 16 rotates in the arrow g direction. The boss portion 16c on the upper surface of the cam gear 16 rotates as shown in FIGS. 9 to 12 while slidingly contacting the arc portion of the groove portion 17a of the cam plate 17 as the cam gear 16 rotates. The cam plate 17 does not move, and maintains the disc mounted state, in other words, the state where the disc is mounted on the turntable 3. Further, the boss 16d on the lower surface of the cam gear 16 also presses the cam lever 33 as the cam gear 16 rotates, and the cam lever 33 rotates clockwise.

  As a result, as shown in FIGS. 11 to 14, the head lever 32 is rotated counterclockwise, and the core portion 31c of the recording head 31 is brought into sliding contact with the disk surface. At this time, since the cam lever detection switch 34 is pushed by the cam lever 33, it is detected that the recording head 31 has reached the recordable state, and the circuit system that is the motor control unit 60 determines that the recordable state is present, and the spindle The rotation of the motor 2 is stopped.

  Then, the spindle motor 2 rotates in the direction of arrow f, and the turntable 3 provided on the motor rotation shaft 2b rotates. Thus, recording is performed by rotating the disc. At this time, the motor arm 5 whose one end is connected to the motor rotating shaft 2b of the spindle motor 2 is given a frictional force generated by the rotation of the spindle motor 2 by the compression spring 6 and the washer 7 at the connecting portion. It rotates in the same direction as the motor rotation shaft 2b.

  Along with this, the idler arm 8 connected to the other end of the motor arm 5 also rotates in the same direction as the motor rotating shaft 2b. As shown in FIG. 8, the idler arm 8 has an arm restricting shaft 8a at the end opposite to the portion connected to the motor arm 5, and the arm restricting shaft 8a extends along the guide hole 1a. It is displaced in the meshing release direction, and is brought into contact with the back end of the apparatus which is the other end of the guide hole 1a. Therefore, the idler gear 9 is displaced to the non-meshing position that is separated from the motor gear 4 and the intermediate gear A13. Therefore, even if the spindle motor 2 rotates in the direction of the arrow f, the idler gear 9 and the intermediate gear A13 do not rotate. The rotation is not transmitted to the gear train after the intermediate gear A13.

  Next, the operation from the recording state to the reproduction state will be described. When operating from the disc recording state to the disc playback state, the motor control unit 60 starts to rotate the spindle motor 2 in the direction of the arrow g based on the playback instruction information indicating the playback instruction, as in the pull-in state. When the spindle motor 2 rotates in the arrow g direction, the motor arm 5 is rotated in the same direction as the motor rotating shaft 2 b by the frictional force generated by the compression spring 6 and the washer 7. Accordingly, the arm regulating shaft 8a of the idler arm 8 is displaced in the meshing direction along the guide hole 1a, and comes into contact with the front end of the apparatus, which is one end of the guide hole 1a, as shown in FIG. Is done.

  At this time, the optical pickup 26 is moved to the innermost peripheral position until the pickup inner circumference detection switch 37 detects it, and the pickup lever 35 is pressed by the optical pickup 26 against the urging force of the spring 80 to the left. At this time, the L-shaped tip portion 5b of the motor arm 5 is positioned to face the hook portion 35a of the pickup lever 35.

  In this state, the spindle motor 2 is rotated in the direction of the arrow f. When the motor arm 5 rotates clockwise, the tip 5b of the motor arm 5 and the hook 35a of the pickup lever 35 come into contact with each other. Be regulated. More specifically, the tip 5a of the motor arm 5 is guided and regulated in the locking direction by the hook 35a of the pickup lever 35 by the clockwise rotation of the motor arm 5.

  As a result, the idler gear 9 is positioned in mesh with both the motor gear 4 and the intermediate gear A13, so that the rotation of the motor gear 4 rotating clockwise is transmitted to the intermediate gear A13 via the idler gear 9. The rotation transmitted to the intermediate gear A13 is transmitted to the cam gear 16 via the intermediate gear B14 in meshing relation. At this time, the cam gear 16 rotates in the direction of the arrow f.

  When in the recording state, the boss 16c on the upper surface of the cam gear 16 and the boss 16d on the lower surface are in the positions shown in FIG. 15, and the boss 16d is separated from the cam lever 33 by the cam gear 16 rotating in the direction of arrow f. Rotate to the position shown in FIG. At that time, the head lever 32 is rotated from the state shown in FIG. 14 to the state shown in FIG. 11 by the urging force of the spring 81 to the head lever 32, in other words, the head lever 32 is rotated clockwise. While the lower end portion 32 c of the lever 32 presses the boss 33 b of the cam lever 33, the cam lever 33 rotates counterclockwise while following the boss 16 d of the cam gear 16.

  At this time, the wall surface 32b of the head lever 32 presses the one end 31b of the recording head 31 with the urging force of the spring 81, so that the core portion 31c is urged upward, in other words, away. Further, as the cam gear 16 rotates in the direction of the arrow f, the boss 16c rotates as shown in FIGS. 15 to 16 while being in sliding contact with the arc portion of the groove portion 17a of the cam plate 17, so that the cam plate 17 Will not move, and the disc will remain attached.

  As the cam gear 16 continues to rotate in the direction of the arrow f, the cam plate 17 starts to move in the loading direction, so that the loading position detection switch 25 and the one end 18b of the SW plate 18 are separated from the pressed state. In this state, it is determined that the circuit system has reached a reproducible state. At that time, the rotation of the spindle motor 2 in the direction of the arrow f is reversed in the direction of the arrow g and the cam plate 17 is moved in the discharging direction. The charging position detection switch 25 is restored until it is pressed again, and a reproducible state is entered as shown in FIG.

  This completes the operation from the recording state to the disc mounting state, in other words, the standby state where recording / reproduction is not performed. At this time, when the reproduction instruction information is given to the disc recording / reproducing apparatus, the optical pickup 26 is moved in the holding release direction which is the outer peripheral direction until the position is detected by the pickup detection switch 36. As a result, the pickup lever 35 is also moved by the spring 80 in the direction of arrow Y, which is the holding release direction, so that the motor arm 5 and the pickup lever 35 are separated from each other. For example, in the state shown in FIG. As in the explanation of the operation during reproduction, the spindle motor 2 can be reproduced by rotating in the direction of the arrow f.

  Next, the operation when the disc is ejected will be described. When ejecting a disc in a disc loaded state, the motor is moved by moving the optical pickup 26 in the inner circumferential direction in the state holding direction until the pickup inner circumference detection switch 37 detects it based on information representing a disc ejection instruction. The arm 5 and the pickup lever 35 abut. Further, by starting the rotation of the spindle motor 2 in the direction of the arrow f, the idler gear 9 is held at the meshing position, and the rotational force of the spindle motor 2 in the direction of the arrow f is transmitted to the cam gear 16. When the disc is ejected from the recording state, the operation from the recording state to the disc loading state is completed in the same manner as the operation from the recording state to the reproduction state. In this case, when the cam plate 17 starts to move in the loading direction, the loading position detection switch 25 and the one end 18b of the SW plate 18 are separated from the pressed state, so that the circuit system can be regenerated. Even after determining that the spindle motor 2 has been reached, the spindle motor 2 can continue to rotate in the direction of the arrow f and be discharged as described later.

  When the disc is in the mounted state, the cam plate 17 is in the position shown in FIG. 16, and the boss portion 16c on the upper surface of the cam gear 16 is inserted into the groove portion 17a of the cam plate as the cam gear 16 rotates. Since it pushes in the direction, the cam plate 17 moves in the loading direction. At this time, the burring portion 21c of the holder arm 21 located in the guide hole 17b on the side surface of the cam plate 17 and the burring portion 19c on the side surface of the cartridge holder located in another guide hole 17c on the side surface of the cam plate 17 are respectively guided. It moves upward along the slopes of the holes 17b and 17c, in other words, in the direction of separation. As a result, the cartridge holder 19 also moves upward.

  Even after such upward movement is completed, the cam plate 17 continues to move in the loading direction. As a result, the SW plate 18 also moves in the loading direction, and the tip portion 22a of the LD arm 22 is pushed in the loading direction by the mouth-shaped portion 18a, so that the LD arm 22 rotates clockwise. By this rotation, the bifurcated portion 22b of the LD arm 22 pushes the slider shaft 20a in the ejection direction, and moves the slider 20 and the disk cartridge 50 in the disk ejection direction, in other words, the ejection direction.

  When the discharge is completed, the SW plate 18 that moves together with the cam plate 17 has its one end 18b pushing the loading switch 24, whereby the circuit system determines that the discharge is complete and stops the rotation of the spindle motor 2. To do. In this state, the optical pickup 26 is moved to the outer periphery until the pick detection switch 36 is detected. At this time, the state shown in FIG. 1 is obtained. An MD or the like can be used as the disk cartridge 50.

  According to the present embodiment, the rotational force of the spindle motor 2 can be transmitted to the disk guide portion 43 and the recording head 31 by switching the state of the connecting portion 41 between a transmittable state and a non-transmittable state. Or can stop transmission. When the pickup lever 35 is displaced to the state holding position and the connecting portion 41 is held in a transmittable state, the rotational force of the spindle motor 2 in the first and second directions is applied to the disk guide portion 43 and the recording head 31. When the connection portion 41 is released from the transmission-permissible state and switched to the non-transmission state, the rotational forces of the first and second rotations of the spindle motor 2 are applied to the disc guide portion 43 and the recording. Transmission to the head 31 can be stopped. Therefore, with a simple configuration, the rotational force of the spindle motor 2 can be transmitted to the disk guide 43 and the recording head 31 or stopped, and the transmission path can be selected as necessary. In addition, it is possible to provide a disk recording / reproducing apparatus that retracts, mounts, and ejects the disk and displaces the recording head 31 by the spindle motor 2 for rotating the disk.

  Further, the rotational force of the spindle motor 2 can be transmitted to the disk guide part 43 and the recording head 31 by the transmission means, specifically, the drive transmission part 42 and the connecting part 41, and the disk is loaded and ejected. In addition, the recording head 31 can be displaced. Accordingly, it is possible to provide a disk recording / reproducing apparatus that uses the spindle motor 2 that rotates the disk as the spindle motor 2 that pulls in, mounts and ejects the disk and displaces the recording head 31 with a simple configuration. .

  Further, while avoiding contact between the disk guide portion 43 and the recording head 31, the disk guide portion 43 causes the disk to be loaded and ejected based on the rotational force of the spindle motor 2 in the first and second directions. The recording head 31 can be displaced in the proximity direction and the retracting direction. Accordingly, it is possible to provide a disk recording / reproducing apparatus that uses the spindle motor 2 that rotates the disk as the spindle motor 2 that pulls in, mounts and ejects the disk and displaces the recording head 31 with a simple configuration. .

  Further, the circuit system as the motor control unit 60 rotates the spindle motor 2 in the first direction and the second direction based on the detection result by the detection unit 44 and information input to the operation input means 70 by the user. Can be controlled. Therefore, the rotation direction of the spindle motor 2 can be controlled on the basis of the completion of the disk mounting and the reproduction instruction or recording instruction by the user.

  Further, the circuit system can start the rotation of the spindle motor 2 based on the detection result by the detection unit 44. Further, when the connecting portion is in a transmittable state, the rotational force of the spindle motor 2 in the second direction can be transmitted to the disc guide portion 43. As a result, the disc guide 43 can be displaced in the loading direction, and the disc can be transported to the loading position. Therefore, with a simple configuration, the spindle motor 2 and the connecting part 41 can be controlled on the basis of the detection result of the detection unit 44 detecting the completion of the disk mounting, and the disk can be taken in the loading direction.

  Further, the circuit system continues the rotation of the spindle motor 2 in the second direction when the recording instruction information is input based on the result of the disc loading completion by the detection unit 44, and the reproduction instruction information is input. If so, the rotation of the spindle motor 2 in the second direction can be stopped. Thereby, smooth operation continuity of the spindle motor 2 can be maintained, or the operation of the spindle motor 2 can be stopped. Further, by continuing the rotation of the spindle motor 2 in the second direction, the rotational force of the spindle motor 2 can be transmitted to the recording head 31, so that the recording head 31 is displaced over the retracted position and the operating position. Thus, the disc can be put into a recordable state or a reproducible state. Therefore, the position of the disk can be detected with a simple configuration, and the spindle motor 2 can be started, continued or stopped as necessary.

  Further, the switching mode of the detection unit 44 is switched by the movement of the disk guide unit 43. Therefore, depending on whether or not the disk guide portion 43 is engaged with the connecting portion 41, the position of the disk guide portion 43, specifically, the position where the disk is mounted on the rotating means or the position where the disk can be attached and detached. It can be detected. Therefore, the position of the disk can be detected with a simple configuration, and the circuit system controls to continue or stop the rotation of the spindle motor 2 in a timely manner based on the detection result. It is possible to make the transition smoothly.

  Further, the circuit system can switch the transmission state of the connecting portion 41 by controlling at least the rotation direction of the spindle motor 2 among the position of the pickup lever 35 and the rotation direction of the spindle motor 2. Therefore, the transmission state of the connecting portion 41 is switched with a simple configuration, and the driving force of the spindle motor 2 is displaced in the loading direction and the discharging direction, and the recording head 31 is moved in the proximity direction and the retracting direction. be able to.

  Further, the circuit system can displace the idler gear 9 in the non-meshing direction only by the rotational force of the spindle motor 2 in the first direction and can be arranged at the non-meshing position. Accordingly, the rotational force in the first direction of the spindle motor 2 can be prevented from being transmitted to the disk guide portion 43 and the recording head 31 with a simple configuration.

  Further, the idler gear 9 can be disposed at the meshing position only by the rotational force of the spindle motor 2 in the second direction, and the pickup lever 35 is disposed at the state holding position with the idler gear 9 disposed at the meshing position. The rotational force in the first direction of the spindle motor 2 can be transmitted to the disk guide 43 and the recording head 31 without displacing the idler gear 9 to the non-meshing position, and the recording head 31 is retracted from the operating position. It can be displaced to a position. Accordingly, the rotational force of the spindle motor 2 in the first direction and the second direction can be transmitted to the disk guide portion 43 and the recording head 31 with a simple configuration, and the conveyance of the disk and the displacement of the recording head 31 can be reduced. Can act.

  Further, when the idler gear 9 is disposed at the non-engagement position, the disk can be rotated and reproduced or recorded without transmitting the rotational force of the spindle motor 2 to the disk guide portion 43 and the recording head 31. When arranged at the meshing position, the rotational force of the spindle motor 2 is transmitted to the idler gear, and the rotation of the idler gear is transmitted to the operating gear, whereby it is transmitted to the disk guide portion 43 and the recording head 31 to Can be transported. Therefore, by disposing the idler gear 9 at the non-engagement position or the engagement position, information can be recorded or reproduced with respect to the disk, and the disk can be conveyed. Thus, the disc recording / reproducing apparatus can be thinned.

  Further, since the displacement of the disc guide 43 in the ejecting direction and the loading direction can be displaced in the rotational direction of the spindle motor 2 in a state where the idler gear is disposed at the meshing position, the disc guide 43 has a simple configuration. The displacement direction can be switched, and the disk can be automatically conveyed.

  Further, only by selecting the meshing position of the idler gear 9, the rotation of the spindle motor 2 in the first and second directions can switch a series of operations of transporting the disk, displacement of the recording head 31, and recording / reproducing of the disk. Can do. Therefore, it is possible to carry out operations of transporting the disc, displacing the recording head 31, and recording / reproducing the disc with a simple configuration, and the disc recording / reproducing apparatus can be thinned.

  Further, the recording head 31 provided in the recording unit 45 in conjunction with the disk transport operation can be displaced over the operation position and the separation position. In other words, when the recording head 31 is displaced to the operating position, recording can be performed on the disk, and when the recording head 31 is displaced to the separation position, the disk can be reproduced and transported. According to this, the spindle motor 2 used for disk rotation for disk recording and reproduction can be used for conveying the disk over the position where the disk is mounted on the rotating means and the position where the disk can be attached and detached. Thus, the manufacturing cost of the spindle motor 2 can be reduced and the disk recording / reproducing apparatus can be made thinner.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  Further, the present invention has been described with respect to an MD recorder as an embodiment, but the present invention is not limited to this, and can be applied to CDs and DVDs.

It is a top view which shows the main components of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a side view which shows the main components of the disc recording / reproducing apparatus shown by FIG. It is sectional drawing at the time of cut | disconnecting on the broken line of ee which shows the main components of the disc recording / reproducing apparatus shown by FIG. It is a top view which shows the components comprised in the upper space of the components shown by FIG. 1 of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a side view which shows the components comprised in the upper space of the disc recording / reproducing apparatus shown by FIG. FIG. 5 is a plan view showing a part of the components of the disk recording / reproducing apparatus shown in FIG. FIG. 6 is a side view showing a part of the disc recording / reproducing apparatus shown in FIG. It is a top view which shows the meshing state of the motor gear 4, the idler gear 9, intermediate | middle gear A13, and intermediate | middle gear B14 at the time of recording and reproduction | regeneration of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a top view which shows the main components at the time of disc insertion of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a side view which shows the main components at the time of disc insertion of the disc recording / reproducing apparatus shown by FIG. FIG. 10 is a side view showing a recording head 31 and a head lever 32 shown in FIG. 9 of a disk recording / reproducing apparatus according to an embodiment of the present invention. It is a top view which shows the main components at the time of transfer to the recording state of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a side view which shows the main components at the time of transfer to the recording state of the disc recording / reproducing apparatus shown in FIG. It is a side view which shows the recording head 31 and the head lever 32 which are shown in FIG. 12 of the disc recording / reproducing apparatus which is one Embodiment of this invention. It is a top view which shows the main components at the time of a transfer start from the recording state of the disc recording / reproducing apparatus which is one Embodiment of this invention to a reproducing state. It is a top view which shows the main component parts at the time of completion of transfer from the recording state of the disc recording / reproducing apparatus which is one Embodiment of this invention to a reproducing state. In the disk recording / reproducing apparatus which is one Embodiment of this invention, it is a top view which shows the main component articles in the state by which the idler gear 9 is distribute | arranged to the meshing position meshing with the motor gear 4 and intermediate | middle gear A13. It is a top view which shows the main components of the disc recording / reproducing apparatus of a prior art. It is a side view which shows the main components of the disc recording / reproducing apparatus of the prior art shown by FIG. It is a top view which shows the components comprised in the upper space of the components shown by FIG. 18 of the disk recording / reproducing apparatus of a prior art.

FIG. 21 is a side view showing components arranged in an upper space of the conventional disk recording / reproducing apparatus shown in FIG. 20. FIG. 21 is a plan view showing a part of a part of the conventional disk recording / reproducing device shown in FIG. FIG. 22 is a side view showing a part of a part of the conventional disk recording / reproducing apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chassis 1a Guide hole 1b Support shaft 1c Support shaft 1d Hole 1f Support 1g Support 2 Spindle motor 2a Mounting plate 2b Motor rotating shaft 3 Turntable 4 Motor gear 5 Motor arm 5a Support shaft 5b Tip 5c Locking surface 6 Compression Spring 7 Washer 8 Idler arm 8a Arm regulating shaft 9 Idler gear 10 Washer 12 Washer 13 Intermediate gear A
13a Large gear portion 13b Small gear portion 14 Intermediate gear B
14a Large gear portion 14b Small gear portion 16 Cam gear 16a Cylindrical portion 16b Gear portion 16c Boss portion 16d Boss portion 17 Cam plate 17a Groove hole portion 17b Guide hole 17c Guide hole 18 SW plate 18a Mouth shape portion 18b One end portion 19 Cartridge holder 19a Arm part 19c Burring part 19d Guide hole 19e Support shaft 20 Slider 20a Slider shaft 20b Slider shaft 21 Holder arm 21a Support hole 21b Support hole 21c Burring part 21d Hook part 22 LD arm 22a Tip part 22b Bifurcated part 23 SW plate spring 24 Loading Detection switch 25 Loading position detection switch 26 Optical pickup 26a Protruding portion 26b Outer portion 31 Recording head 31a Body 31b One end 31c Core portion 32 head lever 32a fulcrum hole 32b wall surface 32c lower end part 32d fulcrum hole 33 cam lever 33a fulcrum hole 33b boss 34 cam lever detection switch 35 pickup lever 35a hook part 35b long hole 35c long hole 35d locking surface 36 pickup detection switch 37 pickup inner circumference detection Switch 40 Drive unit 41 Connection unit 42 Drive transmission unit 43 Disc guide unit 44 Detection unit 45 Recording unit 46 Optical pickup detection unit 50 Disc cartridge 60 Motor control unit 70 Operation input means 80 Spring 81 Spring

Claims (13)

A disk for recording information is detachably mounted, and rotating means for rotating the disk;
A transport means for transporting the disk, provided to be displaceable across a loading position for mounting the disk on the rotating means and a discharge position at which the disk can be attached and detached;
A recording / reproducing means having an operating portion displaceable over an operating position for recording or reproducing information in proximity to a disk rotated by the rotating means and a retracted position away from the operating position;
A driving means which is rotatable in the first and second directions, and which rotates the rotating means by rotating in the first direction, and which drives the conveying means and the operating unit by rotating in the first and second directions; ,
A state in which the rotational force of the driving means can be transmitted to the operating portion of the conveying means and the recording / reproducing means, and a non-transmitting state in which the rotational force of the driving means is stopped to be transmitted to the operating portion of the conveying means and the recording / reproducing means. Switchable transmission means;
The transmission means can be displaced over a state holding position for holding the transmission means against a force based on a rotational force transmitted from the driving means to the conveyance means, and a holding release position for releasing the holding of the state of the transmission means. A disc recording / reproducing apparatus comprising: a transmission state holding unit. The transmission means is
A drive gear coupled to the drive means;
By rotating and rotating, the conveying means is displaced in the charging direction from the discharging position to the charging position and in the discharging direction from the charging position to the discharging position, and the operating part of the recording / reproducing means is retracted An actuating gear for displacing in the proximity direction from the operating position to the operating position and in the separating direction from the operating position to the retracted position;
An idler gear which is provided rotatably and has a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where the transmission of the rotational force of the driving gear to the working gear is stopped. The disk recording / reproducing apparatus according to claim 1. When the rotational force in the first direction of the driving means is transmitted, the conveying means is driven to be displaced in one of the discharging direction and the loading direction, and the operating part of the recording / reproducing means is moved in the separating direction and It is displaced in either direction of proximity,
When the rotational force in the second direction of the driving means is transmitted, the conveying means is driven to be displaced to the other of the discharging direction and the loading direction, and the operating part of the recording / reproducing means It is driven to be displaced in either direction of proximity,
The transmission means transmits a rotational force that displaces the conveying means in the loading direction and the discharging direction in a state in which transmission is possible and the operating part is in the retracted position, and in the state in which the conveying means is in the charging position, The disc recording / reproducing apparatus according to claim 1, wherein a rotational force that displaces the disc in a proximity direction and a separation direction is transmitted to the disc. Detecting means for detecting completion of loading of the disk with respect to the conveying means at the discharge position and completion of loading of the disk with respect to the rotating means;
Operation input means for inputting recording instruction information representing a recording instruction for recording information and reproduction instruction information representing a reproduction instruction for reproducing information;
4. The disc recording / reproducing apparatus according to claim 1, further comprising a control unit that controls the driving unit based on an input result by the operation input unit and a detection result by the detection unit.   The control means switches the transmission means to a transmittable state and rotates the drive means in a second direction when the detection means detects completion of mounting of the disk on the conveyance means. 5. The disk recording / reproducing apparatus according to 4.   When it is detected by the detecting means that the conveying means is displaced in the loading direction and the disc is placed at the loading position and the loading is completed, the recording means is input, and the driving means 6. The disc recording / reproducing apparatus according to claim 5, wherein the rotation in the second direction is continued and the rotation of the driving means in the second direction is stopped when the reproduction instruction information is input.   7. The disc recording / reproducing apparatus according to claim 4, wherein the detecting means is a switch means whose switching mode is switched by movement of the conveying means.   The control means switches the state of the transmission means by controlling at least the rotation direction of the drive means among the position of the transmission state holding means and the rotation direction of the drive means. The disc recording / reproducing apparatus according to claim 1. The transmission means is
A drive gear coupled to the drive means;
An operation gear that is rotatably provided and rotates to displace the conveying means in the loading direction and the discharging direction, and to displace the operating portion of the recording / reproducing means in the proximity direction and the separation direction;
An idler gear which is rotatably provided and displaceable over a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where transmission of the rotational force of the driving gear to the working gear is stopped;
The idler gear receives a force in the mesh release direction from the meshing position toward the non-meshing position when the driving means rotates in the first direction, and when the drive means rotates in the second direction, the idler gear moves from the non-meshing position toward the meshing position. Under the force in the meshing direction,
9. The disk recording according to claim 8, wherein the idler gear is arranged at the non-engagement position by disposing the transmission state holding means at the holding release position and rotating the driving means in the first direction. Playback device. The transmission means is
A drive gear coupled to the drive means;
An operation gear that is rotatably provided and rotates to displace the conveying means in the loading direction and the discharging direction, and to displace the operating portion of the recording / reproducing means in the proximity direction and the separation direction;
An idler gear which is rotatably provided and displaceable over a meshing position where the rotational force of the driving gear is transmitted to the operating gear and a non-meshing position where transmission of the rotational force of the driving gear to the working gear is stopped;
The idler gear is arranged at the meshing position by rotating the driving means in the second direction or by arranging the transmission state holding means at the state holding position when the driving means is rotated in the first direction. The disk recording / reproducing apparatus according to claim 8 or 9, characterized in that: When the idler gear is disposed at the non-engagement position, information is recorded or reproduced on the disc by the recording / reproducing means,
11. The disk recording / reproducing apparatus according to claim 2, wherein the disk is transported by a transport means when the first idler gear is disposed at a meshing position.   With the idler gear arranged at the meshing position, the driving means rotates in the first direction, the conveying means is driven to be displaced in the discharge direction, and the driving means rotates in the second direction, thereby conveying. 12. The disk recording / reproducing apparatus according to claim 11, wherein the means is driven to be displaced in the loading direction. When the idler gear is located at the meshing position and the conveying means is at the discharge position, the driving means is rotated in the second direction, whereby the conveying means is driven in the loading direction, and the disk is rotated. Then, the operating unit is driven in the proximity direction by being further rotated in the second direction, and is arranged in the operating position.
From this state, when the driving means rotates in the first direction, the operating portion is driven in the separating direction and disposed at the retracted position, and then, further, the driving means rotates in the first direction, thereby conveying means. The disk recording / reproducing apparatus according to claim 11, wherein the disk is driven in a discharging direction and the disk is transported to a position where the disk can be attached and detached.

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