JP2006244681A - Reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproducing device which can reliably insert/eject an MD and reduce the costs for miniaturizing it. <P>SOLUTION: This reproducing device has a drive chassis 300 having a recording/reproducing section 800 to reproduce the information on an MD, a floating mechanism to keep the drive chassis 300 and the MD in a floating state when reproducing the information in the recording/reproducing section 800, and a lock mechanism which regulates the movement of the MD by the floating mechanism of the drive chassis 300 in the insertion/ejection direction in association with the ejection operation of the MD by an insertion/ejection mechanism. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a playback apparatus that plays back music recorded on an MD (Mini Disc) or the like, and more particularly to a playback apparatus that includes a disk insertion / ejection mechanism for inserting and ejecting a disk such as an MD.

  In recent years, an in-vehicle disk recording / reproducing apparatus that reproduces music recorded on an MD as an audio device provided in an automobile has been widely used. This disk recording / reproducing apparatus has a function of reading information recorded on the disk surface of the MD through a pickup objective lens and reproducing it into music or the like. Specifically, by irradiating the MD recording surface with a laser beam through an objective lens by a pickup, obtaining reflected light reflected from the MD as an RF signal, and converting the RF signal into an analog signal, Information (for example, music information) recorded on the MD is read. On the other hand, in the case of a rewritable MD, the user's favorite music can be recorded on the MD.

(Schematic configuration of conventional disk recording / reproducing apparatus 100a)
First, a conventional disk recording / reproducing apparatus 100a will be described with reference to FIG. FIG. 12 is a diagram showing a schematic configuration of a conventional disc recording / reproducing apparatus 100a. As shown in the figure, the disc recording / reproducing apparatus 100a includes an insertion / extraction holder in which a drive chassis 300, a clamper 400, and an insertion / extraction lever 511 are connected to the inside of a deck chassis 200 as a casing (main frame). 500 and an elevating lever 600a are assembled. A recording / reproducing unit 800 and a pickup 810 are provided below the clamper 400.

  The clamper 400 has a function of transferring the MD inserted by the user to the recording / reproducing unit 800 by moving up and down (up and down) inside the disc recording / reproducing apparatus 100a.

  The insertion / extraction holder 500 grips the MD inserted into the clamper 400 by the claw portion 530 of the gripping arm 520 and moves the MD in the clamper 400 along with the movement of the insertion / extraction lever 511 connected to the insertion / extraction holder 500. A function of moving to a predetermined position is provided.

  The elevating lever 600a supports the drive chassis 300 and the clamper 400, and has a function of lowering the clamper 400 to the position of the recording / reproducing unit 800 when the MD is inserted. In addition, it has a function of raising the clamper 400 from the recording / reproducing unit 800 and discharging it when the MD is discharged.

  The recording / reproducing unit 800 includes a pickup 810 that reads information recorded on the MD and a turntable 811 on which the transferred MD is placed. A support spring 370 (FIG. 15A) is attached between the upper position of the drive chassis 300 and the deck chassis 200, and a damper member 364 is provided at the bottom position of the drive chassis 300. Thus, the drive chassis 300 is supported by the support spring 370 and the damper member 364 so as to be able to float.

  Reference numeral 700a denotes a transfer drive mechanism including a drive motor 705a for transferring the clamper 400 to the recording / reproducing unit 800, a worm gear 710a of the drive motor 705a, and a plurality of transmission gears 720a to 740a. The driving force by 700a is transmitted from the insertion / extraction lever 511 to the insertion / extraction holder 500, and the insertion / extraction holder 500 can be transferred to a predetermined position of the clamper 400.

  Further, as will be described later, after the insertion / extraction holder 500 is moved, the driving force by the transfer drive mechanism 700a is further transmitted to the elevating lever 600a, and the clamper 400 starts to descend as the elevating lever 600a moves. The MD held by the holding arm 520 of the insertion / extraction holder 500 by the lowering of the clamper 400 is transferred to the turntable 811 of the recording / reproducing unit 800.

(Movement mechanism of insertion / extraction holder 500 and elevating lever 600a)
Next, with reference to FIGS. 13 and 14, the details of the moving mechanism of the insertion / ejection holder 500 and the elevating lever 600a in the conventional disk recording / reproducing apparatus 100a will be described. FIG. 13 shows an outline of a moving mechanism using the insertion / ejection holder 500 and the lift lever 600a, and FIG. 14 shows an enlarged view of the main part of FIG.

  That is, as shown in FIGS. 13 and 14, a rack lever 680a is attached to the side plate portion of the insertion / extraction lever 511 connected to the insertion / extraction holder 500 so as to be slidable in the front-rear direction (vertical direction in the drawing). A short rack lever 680b is fixed to the side surface of the lift lever 600a. The rack lever 680b and the rack lever 680a are disposed adjacent to each other so as to partially overlap each other. Further, rack teeth 688 and rack teeth 689 are formed on the rack lever 680a and the rack lever 680b, respectively, and the rack teeth 688 and 689 are engaged with a pinion gear 741a formed on the transmission gear 740a.

  Further, a long through hole 681a is formed in the substantially central portion of the rack lever 680a, and a dowel 685 provided in the rack lever 680b is slidably fitted into the long through hole 681a. The insertion / ejection lever 511 and the rack lever 680a are connected by a tension spring 690a.

  In the moving mechanism of the insertion / ejection holder 500 and the lift lever 600a configured as described above, the drive of the drive motor 705a is transmitted from the worm gear 710a to the transmission gear 720a to the transmission gear 740a, and the transmission gear 740a is clockwise (FIG. 14). When the rack lever 680a meshing with the pinion gear 741a of the transmission gear 740a starts moving backward (upward in FIG. 14), the insertion / extraction lever 511 thereby causes the MD pull-in direction. Start moving toward the rear.

  Next, when the end (the lower side in FIG. 14) of the long through hole 681a formed in the rack lever 680a reaches the position of the dowel 685 of the rack lever 680b (the solid line portion in FIG. 14), the rack lever 680b moves to the rack lever 680a. It is pulled and starts moving rearward in the same manner as the rack lever 680a.

  Hereinafter, by further driving the transfer drive mechanism 700a, the pinion gear 741a of the transmission gear 740a gets over the overlap portion (overlapping portion) between the rack lever 680a and the rack lever 680b and meshes with the rack teeth 688 of the rack lever 680a. It disengages and then meshes with the rack teeth 689 of the rack lever 680b.

  As a result, the driving force of the transfer drive mechanism 700a is transmitted to the rack lever 680b, so that the lifting lever 600a connected to the rack lever 680b starts moving rearward. Accordingly, the clamper 400 starts to descend. Details of the lowering operation of the clamper 400 will be described later.

(MD insertion / extraction mechanism in disc recording / reproducing apparatus 100a)
Next, with reference to FIGS. 15A to 15C, an outline of an MD insertion / extraction operation by the clamper 400 and the lift lever 600a provided in the disk recording / reproducing apparatus 100a will be described. 15A shows a state before the MD is inserted into the disc recording / reproducing apparatus 100a, FIG. 15B shows a state when the MD is inserted by the user, and FIG. It is a figure which shows the state at the time of completion of insertion of MD, respectively.

  That is, as shown in FIG. 15A, when the MD is not inserted, the elevating lever 600a is positioned at the front end of the deck chassis 200 (on the right side in FIG. 15A). The four provided shaft portions (however, only two locations on the near side in the drawing are shown) are fitted into the parallel grooves 631 of the first groove portion 630a. Further, the four shaft portions 340 (only two on the front side shown in the drawing) fixed to the side surface portion of the drive chassis 300 are respectively fitted into the parallel grooves 641 of the second groove portion 640a. ing. The clamper 400 and the drive chassis 300 are connected by a tension spring 411.

  Next, as shown in FIG. 15-2, when the user of the disc recording / reproducing apparatus 100a inserts the MD from the state shown in FIG. 15-1, the claw portion 530 of the grip arm 520 of the insertion / extraction holder 500 (FIG. 12). As a result, the insertion / extraction holder 500 is slightly retracted and an insertion detection switch (not shown) is operated in accordance with the retraction, so that the driving by the transfer drive mechanism 700a is started.

  Specifically, the driving force by the drive motor 705a is transmitted from the transmission gears 720a to 740a to the insertion / ejection lever 511 through the rack lever 680a by the worm gear 710a. For this reason, the insertion / extraction holder 500 connected to the insertion / extraction lever 511 can move backward in the clamper 400 while gripping the MD, and the MD can be drawn to a predetermined position in the clamper 400.

  Further, the elevating lever 600a starts to move toward the rear (upper side in FIG. 12) by driving the transfer driving mechanism 700a. For this reason, as shown in FIG. 15B, the shaft portion 430 fitted in the parallel groove 631 of the first groove portion 630a moves downward from the parallel groove 631 of the first groove portion 630a via the skew groove 632. Therefore, the clamper 400 starts to descend due to the elasticity of the tension spring 411.

  Hereinafter, as shown in FIG. 15C, the shaft portion 430 of the clamper 400 and the shaft portion 340 of the drive chassis 300 move to the circular grooves 633 and 643 of the first groove portion 630a and the second groove portion 640a, respectively, and stop. To do. At this time, the MD is placed on the turntable 811 (FIG. 12), and the lowering operation of the clamper 400 is stopped. As shown in the figure, when the MD is completely inserted, the shaft portions 430 and 340 of the clamper 400 and the drive chassis 300 are located at substantially the center of the circular hole grooves 633 and 643 of the elevating lever 600a. The lift lever 600a is not in contact with the lift lever 600a, and is held in a floating state inside the deck chassis 200 by the damper member 364 and the support spring 370.

  As described above, in the disc recording / reproducing apparatus 100a, the MD inserted by the user is gripped by the claw portion 530 of the grip arm 520 of the insertion / ejection holder 500 provided inside the clamper 400, and the clamper 400 moves to the position of the recording / reproducing unit 800 by moving the elevating lever 600a, and is placed (set) on the turntable 811 of the recording / reproducing unit 800. Thereafter, the turntable 811 rotates by driving a spindle motor (not shown), and the recorded information recorded on the MD is read by the pickup 810 to reproduce the information recorded on the MD (for example, music information). It will be.

(Outline of MD and opening / closing mechanism of dustproof shutter)
Next, referring to FIG. 16, the outline of the MD and the opening / closing mechanism of the dustproof shutter will be described. That is, as shown in FIG. 16, the MD includes a disk 111, a cartridge 112, a U-shaped slidable dustproof shutter 113, and a locking spring 114. Music information or the like is recorded on the disk 111 and is rotatably incorporated in the cartridge 112. Further, windows 111a are formed on both the front and back surfaces of the cartridge 112, and a dustproof shutter 113 is provided on the window 111a to protect scratches, dirt, dirt, and the like attached to the recording surface of the disk 111.

  Further, a locking claw 115 is provided on the dust-proof shutter 113, and an engagement hole 116 is formed on the side surface (right side in the figure). That is, when the MD is not inserted (when not set), the locking claw 115 of the dustproof shutter 113 and the locking portion 117 of the locking spring 114 are engaged with each other to lock the dustproof shutter 113. This prevents the dust-proof shutter 113 from opening unexpectedly.

  On the other hand, the side plate portion 420 constituting the clamper 400 is provided with a locking spring 118 and a side plate piece 419 respectively protruding from the inside of the side plate portion 420. The locking spring 118 is formed so as to be fitted into the engagement hole 116 of the dustproof shutter 113 and has a function of fixing the dustproof shutter 113 at a predetermined position by elasticity (spring pressure).

  The side plate piece 419 abuts on the locking spring 114 when the MD is inserted, and presses the locking spring 114 inward, thereby locking the locking portion 117 of the locking spring 114 and the dustproof shutter 113. When the engagement with the claw 115 is released and then the MD is further inserted, the side plate piece 419 comes into contact with the locking claw 115 and has a function of opening the dustproof shutter 113.

  On the other hand, when the MD is discharged, the pressing by the side plate piece 419 against the locking spring 114 is released along with the MD discharging operation, while the locking spring 118 is engaged with the engagement hole 116 and the dustproof shutter 113 is moved. It slides in the closing direction, and finally, the locking claw 115 of the dustproof shutter 113 and the locking portion 117 of the locking spring 114 are engaged to close the dustproof shutter 113.

  As a conventional technique of the disk recording / reproducing apparatus described above, for example, Patent Document 1 describes a cartridge transport apparatus that draws an MD into a clamper using a roller without using an insertion / ejection holder or an insertion / ejection lever. Has been.

JP 2000-222805 A

  By the way, in the case of the MD insertion / extraction mechanism constituting the conventional disc recording / reproducing apparatus 100a described above, the MD is discharged after the dust-proof shutter 113 is closed by the movement of the insertion / extraction holder and the action of the locking spring 118. Further, the MD is pushed forward to complete the discharge. Therefore, in this case, the engagement with the locking spring 118 engaged with the engagement hole 116 of the dustproof shutter 113 is released by the driving force of the transfer drive mechanism 700a (FIG. 13).

  That is, in the conventional insertion / extraction mechanism, the movement of the clamper 400 is only in the vertical direction. Therefore, in order to secure the amount of protrusion of the MD at the time of ejection, the locking spring 118 gets over the engagement hole 116 and further forwards to the MD. The driving force over the locking spring 118 must depend on the transfer driving mechanism 700a. For this reason, conventionally, if the locking spring 118 is deformed or there is a burr or the like in the engagement hole 116 formed in the dust-proof shutter 113, there is a problem that an extra load is applied to the transfer drive mechanism 700a. is there.

  Further, conventionally, since the elevating lever 600a is driven only by the spring force of the tension spring 690a (FIG. 13), the tension spring 690a is elongated at the initial stage of discharging the MD with a relatively large load. As a result, the clamper 400 There is a risk of malfunctions such as inability to perform the discharge operation.

  Further, the conventional insertion / extraction mechanism includes an insertion / extraction holder 500 that holds the MD inserted therein and moves the inside of the clamper 400. The movement of the insertion / extraction holder 500 is transferred to the insertion / extraction holder 500. This is done by moving the connected insertion / extraction lever 511 by the transfer drive mechanism 700a. For this reason, a complicated configuration such as an insertion / extraction lever 511 for moving the insertion / extraction holder 500 to a predetermined position and a drive mechanism for moving the insertion / extraction lever 511 is required, and these configurations become bulky. As a result, there is a problem that the apparatus becomes large.

  Here, in the case of the cartridge transport device described in Patent Document 1, MD can be inserted / removed without using an insertion / extraction holder or insertion / extraction lever by using a roller, thereby reducing the size of the apparatus. However, there is a problem in that the driving force of the rollers tends to be uneven in the left and right directions, and as a result, it becomes difficult to pull out (push out) the disk straight.

  Specifically, there is a possibility that the MD may be skewed during the insertion / extraction operation and may be caught inside. As a result, an extra load is applied to the MD transfer drive mechanism, which impairs the operability when the user takes out the MD.

  Accordingly, the present invention has been made to solve the above-described problems caused by the prior art, and is capable of reliably inserting and removing a disk such as an MD and reducing costs associated with downsizing the apparatus. An object of the present invention is to provide a reproducing apparatus capable of performing the above.

  In order to solve the above-described problems and achieve the object, the invention according to claim 1 includes an insertion / discharge mechanism for setting or discharging a recording medium having a dustproof shutter for protecting the recording surface at a reproducible position. The insertion / ejection mechanism includes a leaf spring member that engages with an engagement portion of the dustproof shutter when the recording medium is ejected to close the dustproof shutter, and the fixing position of the leaf spring member is When the discharge of the recording medium is completed, the position is selected to be engaged with the engaging portion of the dustproof shutter.

  The invention according to claim 2 is a reproducing apparatus including an insertion / ejection mechanism for setting the recording medium at a reproducible position or ejecting the recording medium from the reproducible position, wherein the insertion / ejection mechanism includes: A drive member that conveys and drives the recording medium; a drive transmission mechanism that transmits a driving force to the drive member; and a transmission that supports transmission of power from the drive transmission mechanism to the drive member during a discharge operation of the recording medium. A support member is provided.

  The invention according to a third aspect is the invention according to the second aspect, wherein the transmission support member transmits power from the drive transmission mechanism to the drive member at an initial stage of the discharge operation of the recording medium. It is characterized by supporting.

  The invention according to claim 4 is the invention according to claim 2 or 3, wherein the transmission support member is a claw member rotatably provided on the drive member, and the transmission support member is a recording medium. The tip of the claw member engages with the drive transmission mechanism during discharging to assist in the transmission of power from the drive transmission mechanism to the drive member.

  The invention according to claim 5 is a reproducing apparatus including an insertion / ejection mechanism for setting the recording medium at a reproducible position or ejecting the recording medium from the reproducible position, and records information on the recording medium. A drive chassis having a reproducing unit for reproducing, a floating mechanism for holding the drive chassis in a floating state, and the movement of the drive chassis by the floating mechanism in accordance with the ejection operation of the recording medium by the insertion / ejection mechanism And a movement lock mechanism for regulating.

  Further, an invention according to claim 6 is the invention according to claim 5, further comprising a drive member for setting the recording medium to the position of the reproducing unit or discharging the recording medium from the position of the reproducing unit, The drive member is provided with a groove portion, the drive chassis is provided with a shaft portion that engages with the groove portion and moves along the groove portion, and the movement lock mechanism is based on the insertion / discharge mechanism, The shaft portion of the drive chassis is provided with a movement lock member that restricts movement of the shaft portion of the drive chassis along the groove portion as the recording medium is ejected.

  The invention according to claim 7 is the invention according to claim 6, wherein the movement lock member is rotatably supported by a pivot provided at one end of the movement lock member, and the other end is The shaft of the drive chassis is restricted from moving along the groove by being slidably supported with respect to the drive member and rotating around the pivot as the drive member moves. It is characterized by doing.

  The invention according to claim 8 is the invention according to claim 7, wherein the movement lock member is provided with a notch portion that can be fitted into the shaft portion of the drive chassis, and the notch portion and the shaft portion. The shaft portion of the drive chassis is restricted from moving along the groove portion by the engagement with.

  The invention according to claim 9 is the invention according to claim 8, wherein the movement lock mechanism is configured such that when an external force acts on the drive chassis, the movement lock member moves to move the shaft portion and the shaft. It is further characterized by further comprising a movement prevention mechanism for preventing the engagement with the notch from being released.

  The invention according to claim 10 is the invention according to claim 9, wherein the movement lock member is provided with a first notch, and the first notch and the shaft are engaged. By doing so, the shaft portion is restricted from moving along the groove portion, and the movement preventing mechanism is substantially the same as the first cutout portion formation direction from the formation position of the first cutout portion. It is constituted by a second cutout portion formed in a direction orthogonal to the drive chassis, and when an external force is applied to the drive chassis, the second cutout portion and the shaft portion of the drive chassis are engaged, The engagement between the shaft portion and the first cutout portion is prevented from being released.

  As described above, according to the first aspect of the present invention, the insertion / ejection mechanism constituting the reproducing apparatus engages with the engagement portion of the dustproof shutter and closes the dustproof shutter when the recording medium is ejected. And the fixing position of the leaf spring member is selected at a position engaged with the engaging portion of the dustproof shutter when the recording medium is completely discharged, so that an extra load is applied to the transfer driving mechanism. In addition, the MD can be taken out manually, so that a member that does not take into account the spring pressure and shape can be adopted as the member used for the leaf spring member, and as a result, the cost can be reduced. It has the effect of becoming.

  According to the invention of claim 2, the insertion / ejection mechanism includes a drive member that conveys and drives the recording medium, a drive transmission mechanism that transmits a driving force to the drive member, and an ejection operation of the recording medium. Occasionally, a transmission support member that supports transmission of power from the drive transmission mechanism to the drive member is provided, so that a large load (unreasonable force) is not applied to the drive motor or the like constituting the transfer drive mechanism. There is an effect that damage to the drive mechanism can be avoided.

  According to the invention of claim 3, the transmission support member supports transmission of power from the drive transmission mechanism to the drive member at an initial stage of the discharge operation of the recording medium. A large load (unreasonable force) is not applied to the drive motor constituting the transfer drive mechanism, and the transfer drive mechanism can be prevented from being damaged.

  According to a fourth aspect of the present invention, the transmission support member is a claw member that is rotatably provided on the drive member, and the transmission support member has a tip of the claw member that is positioned when the recording medium is discharged. By engaging with the drive transmission mechanism, the transmission of power from the drive transmission mechanism to the drive member is supported, so that an excessive load is not transmitted to the transfer drive mechanism. A large load (unreasonable force) is not applied to the drive motor or the like, and the transfer drive mechanism can be prevented from being damaged.

  According to the fifth aspect of the present invention, the reproducing apparatus includes a drive chassis having a reproducing unit that reproduces recorded information of the recording medium, and the drive chassis and the recording medium during reproduction of the recorded information by the reproducing unit. In a floating state, and in accordance with the discharge operation of the recording medium by the insertion / discharge mechanism, the floating mechanism of the drive chassis causes the recording medium to be inserted into / removed from the playback device. Since the movement lock mechanism that restricts movement is provided, the movement lock mechanism can lock (prevent) sudden movement of the drive chassis, thereby protecting the drive chassis from impacts such as dropping. Play.

  According to the invention of claim 6, the reproducing apparatus includes a driving member that sets the recording medium to the position of the reproducing unit or ejects the recording medium from the position of the reproducing unit. Is provided with a groove portion, and the drive chassis is provided with a shaft portion which engages with the groove portion and moves along the groove portion. Since the shaft portion of the drive chassis is provided with a movement lock member that restricts the movement of the shaft portion of the drive chassis along the parallel groove portion in accordance with the ejection operation, the shaft portion of the drive chassis is locked from suddenly moving along the groove portion. Thus, the drive chassis can be reliably protected from impacts such as dropping.

  According to the invention of claim 7, the movement lock member is rotatably supported by a pivot provided at one end of the movement lock member, and the other end slides with respect to the drive member. The shaft portion of the drive chassis is restricted from moving along the groove portion by rotating about the pivot axis as the drive member moves. Even when an external force is applied, the operation of the movement lock member can lock (block) the sudden movement of the drive chassis, and the drive chassis can be reliably protected from impacts such as dropping.

  According to an eighth aspect of the present invention, the movement lock member is provided with a notch portion that can be fitted into the shaft portion of the drive chassis, and the engagement between the notch portion and the shaft portion allows the movement lock member to Since the shaft portion of the drive chassis is restricted from moving along the groove portion, there is an effect that the drive chassis can be reliably protected from an impact such as dropping by the operation of the movement lock member.

  According to a ninth aspect of the invention, the movement lock mechanism is configured such that when the external force is applied to the drive chassis, the movement of the movement lock member causes the shaft portion and the notch portion to be engaged. In addition, the drive chassis can be locked on both sides by the movement prevention mechanism, thereby more reliably protecting the drive chassis from impacts such as dropping. There is an effect that can be.

  According to the invention of claim 10, the movement lock member is provided with a first cutout portion, and the shaft portion is engaged by the engagement of the first cutout portion and the shaft portion. The movement preventing mechanism is formed in a direction substantially perpendicular to the forming direction of the first notch portion from the forming position of the first notch portion. When the external force is applied to the drive chassis, the second notch and the shaft portion of the drive chassis are engaged with each other, so that the shaft portion and the first notch portion are engaged with each other. Since the engagement with the notch is prevented from being released, the drive chassis can be more reliably protected from an impact such as dropping.

  Exemplary embodiments of a reproducing apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing the overall configuration of a disc recording / reproducing apparatus 100 according to the present invention. FIG. 2 is a schematic diagram showing a state in which MD insertion is completed by the disc recording / reproducing apparatus 100. FIG. 3 is a diagram showing an outline of the internal configuration of the disc recording / reproducing apparatus 100 and a main circuit configuration.

  Here, the “set” of the MD described in the specification means that the MD is mounted on the turntable 811 (FIG. 12) of the recording / reproducing unit 800 by the insertion / ejection mechanism of the disc recording / reproducing apparatus 100. It is shown that it can be placed and played back. “Insertion” indicates an operation of transferring (withdrawing) the MD inserted into the insertion port of the disk recording / reproducing apparatus 100 by the user to the position of the recording / reproducing unit 800 by the insertion / ejection mechanism. “Ejection” indicates an operation of transferring the MD set in the recording / reproducing unit 800 to the position of the insertion slot by the insertion / ejection mechanism. In addition, this invention is not limited by each Example 1-3 shown below.

  The disc recording / reproducing apparatus 100 according to the first embodiment is characterized in that it includes a movement control member 900 that interlocks the MD insertion / extraction operation by the insertion / extraction holder 500 and the forward / backward movement of the clamper 400. As a result, in the first embodiment, the MD insertion / extraction operation can be performed reliably, and a conventional insertion / extraction lever for moving the insertion / extraction holder and a rack lever for driving the insertion / extraction lever, etc. The drive transmission mechanism can be eliminated, and as a result, the disk recording / reproducing apparatus 100 can be downsized.

  That is, the operation of the clamper 400 by the conventional disk recording / reproducing apparatus 100a (FIG. 12) is configured to move up and down by the vertical movement of the elevating lever 600a, but the clamper 400 in the disk recording / reproducing apparatus 100 of the first embodiment is In addition to moving up and down, the disc recording / reproducing apparatus 100 has a function of moving in the front-rear direction (vertical direction in FIG. 1).

  In addition, as shown in FIG. 1, the movement control member 900 can amplify the MD transfer operation by the insertion / extraction holder 500 in accordance with the so-called lever principle in conjunction with the movement of the clamper 400 back and forth. . That is, in the conventional disc recording / reproducing apparatus 100a (FIG. 12), the clamper 400 and the insertion / extraction holder 500 operate separately, but in the first embodiment, the operation of the insertion / extraction holder 500 and the clamper 400 Are interlocked by the movement control member 900, and thereby the movement stroke of the insertion / extraction holder 500 can be amplified.

  More specifically, based on the back and forth movement of the clamper 400 accompanying the back and forth movement of the drive member 600, the movement control member 900 is moved in the back and forth direction around the pivot 465 provided in the clamper 400. The longitudinal movement of the insertion / ejection holder 500 provided inside the clamper 400 is amplified.

  That is, as shown in FIG. 1, when the travel distance by the clamper 400 is S1 and the travel distance by the MD is S2, the movement control member 900 controls the movement of the clamper 400 by comparing the movement S1 of the clamper 400 with the MD. Can be amplified almost twice or more. As a result, a sufficient eject margin can be ensured while suppressing the projected area, and the operability related to the insertion / extraction of the MD can be improved.

(Configuration of disc recording / reproducing apparatus 100)
Details of the configuration of the disk recording / reproducing apparatus 100 will be described below with reference to FIGS. That is, as shown in FIGS. 1 to 3, the disc recording / reproducing apparatus 100 includes a deck chassis 200 as a housing (main frame), a drive chassis 300, and a clamper 400 provided inside the drive chassis 300. Similarly, in the clamper 400, an insertion / ejection holder 500 for moving in the front-rear direction (the vertical direction in FIGS. 1 and 2), which is the MD insertion and ejection direction, and a drive member 600 provided above the clamper 400, It is comprised by. A movement control member 900 is provided between the clamper 400 and the drive member 600. Details of the configuration and functions of the movement control member 900 will be described later.

  Further, a transfer drive mechanism 700 for operating the clamper 400 and the drive member 600 in the front-rear direction (vertical direction in FIGS. 1 and 2) is provided at the rear position (upper side in FIG. 1) of the deck chassis 200. The transfer drive mechanism 700 includes a drive motor 705 for driving, a worm gear 710 fixed to the drive shaft of the drive motor 705, and transmission gears 720, 730, and 740. As will be described later, The driving force by the transfer driving mechanism 700 is transmitted from the worm gear 710 to the rack lever 680 via the transmission gears 720, 730, and 740, thereby moving the clamper 400 and the driving member 600 in the front-rear direction. .

  Further, at a predetermined position (the rear side in FIG. 2) of the deck chassis 200, when detecting the movement of the driving member 600, insertion detection for turning the transfer driving mechanism 700 on (ON) or non-operating (OFF). A switch 601 and an insertion completion detection switch 602 are attached.

  On the other hand, a convex portion 621 is formed on the rear side of the drive member 600 so that it can come into contact with the insertion detection switch 601 and the insertion completion detection switch 602 when the drive member 600 moves.

  The insertion detection switch 601 detects that the insertion of the MD is started by the contact with the convex portion 621 accompanying the backward movement of the driving member 600 when the MD is inserted by the user, and the transfer driving mechanism. A function for starting the operation according to 700 is provided.

  Further, the insertion completion detection switch 602 has a function of detecting the completion of MD insertion by abutting with the convex portion 621 accompanying the backward movement of the drive member 600 and stopping the operation of the transfer drive mechanism 700. Yes. That is, when the user of the disk recording / reproducing apparatus 100 inserts (pushes in) the MD, the operation of the insertion detection switch 601 and the insertion completion detection switch 602 is detected, and thereby the operation of the drive member 600 by the transfer drive mechanism 700 is detected. Alternatively, stop control is performed.

  The insertion / ejection holder 500 has a function of holding the MD inserted by the user and moving the MD to a predetermined position. As shown in FIG. 1, the insertion / extraction holder 500 includes a flat plate portion 510 formed in a flat plate shape and a pair of gripping arms 520 attached to both ends of the flat plate portion 510. A claw portion 530 having a convex shape toward the inside is formed at the distal end portion of the grip arm 520, and the claw portion 530 is engaged with a concave portion (not shown) formed in the cartridge portion of the MD. By combining, the MD can be gripped from both sides.

  Further, long passage holes 540 and 540 are formed at two positions (left and right in FIG. 1) of the flat plate portion 510 of the insertion / ejection holder 500, and the sliding holes of the movement control member 900 are slid into these long passage holes 540 and 540. The moving shaft portions 920 and 920 are respectively inserted. As a result, the insertion / extraction holder 500 can move back and forth (up and down in FIG. 1) while holding the MD inside the clamper 400 by the operation of the movement control member 900 as the clamper 400 moves (movable). ).

(Configuration and Function of Movement Control Member 900)
Next, details of the configuration and functions of the movement control member 900 will be described. As shown in FIGS. 1 and 2, the movement control member 900 is configured in an X shape in which a pair of lever members 910 and 910 are combined. More specifically, a through hole 915 is formed at substantially the center of the lever members 910 and 910 constituting the movement control member 900, and the lever members 910 and 910 are crossed with each other. A pivot 465 erected on the flat plate portion 410 of the clamper 400 passes through 915.

  Sliding shaft portions 920 and 920 are fixedly provided in front of the lever members 910 and 910 (the lower side in FIGS. 1 and 2). As described above, the sliding shaft portions 920 and 920 are slidably fitted into the long through holes 540 and 540 formed in the insertion / extraction holder 500. Further, long through holes 930 are formed behind the lever members 910 and 910 (upper side in FIGS. 1 and 2), and these long through holes 930 are fixed to the flat plate portion 310 of the drive chassis 300. A shaft portion 350 is slidably fitted.

  That is, in the conventional disc recording / reproducing apparatus 100a, the clamper 400 and the insertion / ejection holder 500 are individually operated. However, in this embodiment, the movement by the insertion / ejection holder 500 accompanying the longitudinal operation of the clamper 400 is as follows. The movement control member 900 is interlocked.

  More specifically, when the insertion / ejection holder 500 moves rearward (upper side in FIGS. 1 and 2), the lever members 910 and 910 of the movement control member 900 move the clamper 400 around the pivot 465. In this configuration, the clamper 400 can be pulled back to the position where the clamper 400 is lowered. As will be described later, at this time, the movement of the clamper 400 is amplified by the action of the movement control member 900 (the principle of the lever) and transmitted to the insertion / extraction holder 500, so that the MD is pulled into the interior with a small movement of the clamper 400. be able to.

(Outline of disc recording / reproducing apparatus 100 and recording / reproducing unit 800)
Next, with reference to FIG. 3, an internal configuration of the disk recording / reproducing apparatus 100 and an outline of the recording / reproducing unit 800 will be described. That is, as shown in the figure, the recording / reproducing unit 800 includes a pickup 810, a turntable driving unit 816 that drives (rotates) a turntable 811 that rotates by placing an MD, and a control unit 820. It is configured. The control unit 820 has a function of transmitting a drive signal to the pickup 810, the turntable drive unit 816, and the transfer drive mechanism 700 and controlling each operation in an integrated manner.

  Further, as shown in the figure, supported by a damper member 364 that prevents the drive chassis 300 from swinging at three positions (two positions are shown in FIG. 3) interposed between the drive chassis 300 and the deck chassis 200. Has been. Further, support springs 370 are attached between the upper four positions of the drive chassis 300 (in FIG. 3, two positions are described) and the deck chassis 200. Therefore, the drive chassis 300 is supported on the deck chassis 200 by the three damper members 364 and the four support springs 370 so that they can float.

(Configuration of drive chassis 300)
Hereinafter, the details of each member constituting the disk recording / reproducing apparatus 100 will be described with reference to the drawings. 4A is a plan view showing the overall configuration of the drive chassis 300, and FIG. 4-2 is a side view of the drive chassis 300.

  That is, as shown in FIGS. 4A and 4B, the drive chassis 300 is formed in a U-shaped cross section including a flat plate portion 310 and a pair of side plate portions 320. A plurality of shaft portions 340 are fixed. These four shaft portions 340 are formed at positions that can be fitted into the second groove portion 640 formed in the drive member 600 (FIG. 7-2). Further, a notch 325 is formed at the upper half edge of the side plate portion 320. As will be described later, the notch 325 has a function of holding the shaft portion 430 fixed to the clamper 400 (FIG. 5-1) in a state where the MD is inserted.

  In addition, at two positions of the flat plate portion 310 constituting the drive chassis 300, two (a pair of) shaft portions 350 and 350 are fixedly provided above the flat plate portion 310. As described above, the shaft portions 350 and 350 are slidable in the long through holes 930 and 930 formed in the lower portion (upper side in FIGS. 1 and 2) of the movement control member 900 (FIGS. 1 and 2), respectively. It is assembled in the state of being inserted into the.

  As described above, the drive chassis 300 is disposed below the clamper 400 and functions to support the clamper 400 by engaging the four shaft portions 430 provided on the clamper 400 with the cutout portions 325. It has. As described above, the drive chassis 300 is supported on the deck chassis 200 by the three damper members 364 (FIG. 3) and the four support springs 370 so as to be floating.

(Configuration of clamper 400)
Next, the configuration of the clamper 400 will be described with reference to FIGS. 5A and 5B. Here, FIG. 5A is a plan view showing the overall configuration of the clamper 400, and FIG. 5B is a side view of the clamper 400. FIG.

  The clamper 400 has a function of accommodating an insertion / extraction holder 500 (FIG. 1) for inserting / removing an MD therein. Therefore, as shown in the figure, the clamper 400 is formed in a U-shaped cross section comprising a flat plate portion 410 and a pair of side plate portions 420, and the four shaft portions 430, 430 are fixed to the side plate portion 420. It is installed. As will be described later, these four shaft portions 430 and 430 are assembled in a state of being fitted into first groove portions 630 formed in the drive member 600 (FIG. 7-2).

  In addition, an opening 415 for preventing the flat plate portion 410 from interfering with the pickup 810 (FIG. 12) is formed in the lower half portion of the flat plate portion 410. Further, as described above, the pivot 465 is erected on one side of the flat plate portion 410, and this pivot 465 is formed at the intersection of the pair of lever members 910 constituting the movement control member 900 (FIG. 1). The movement control member 900 is rotatably supported through the through hole 915.

  Further, a part of the side plate part 420 constituting the clamper 400 (the front side plate part 421 functioning as an MD insertion port) is left to cover (hold) the upper part of the MD, while being located on the rear side. Most of the rear plate is removed halfway.

  More specifically, each of the side plate portions 420 of the clamper 400 includes a front plate portion 421 and a rear plate portion 422 that are bent by 90 ° toward the inside. Among these, the rear plate portion 422 is a front plate portion. It is bent 90 ° inward at a lower position. The rear side plate portion 422 formed on the side plate portion 420 has a function of opening and closing the MD dustproof shutter 113.

  Here, a notch 611 for preventing interference with the front plate 421 is formed in the flat plate 610 of the driving member 600 (FIG. 7-1) corresponding to the front plate 421, whereby the clamper 400 is formed. Thus, a large space (margin) between the drive member 600 and the drive member 600 can be ensured, whereby the thickness of the entire disk recording / reproducing apparatus 100 can be suppressed.

(Mounting position of locking spring 118)
Next, the attachment position of the locking spring 118 provided in the clamper 400 in the first embodiment will be described. 6A is a mounting position of the locking spring 118 provided in the clamper 400 according to the first embodiment, and FIG. 6B is a mounting position of the locking spring 118 provided in the first embodiment and the conventional clamper 400. It is explanatory drawing which compares. FIGS. 6A and 6B show the position of the clamper 400 when the MD ejection operation is completed (when ejection is completed).

  That is, as shown in FIG. 6A, in the first embodiment, by using the forward / backward movement of the clamper 400 by the movement control member 900, the position of the locking spring 118 for opening and closing the shutter of the MD can be changed. Even when the discharging operation is completed, the position is set so as to be engaged with the engaging hole 116 of the dustproof shutter 113. As a result, the operation of releasing the engagement between the locking spring 118 and the engagement hole 116 of the dust-proof shutter 113 is substantially performed by the user without using the driving force of the transfer drive mechanism 700 (FIG. 1). This is done by operating force when taking out.

  In other words, as shown in FIG. 6B, in the case of the MD insertion / extraction mechanism shown as the conventional example, the dust-proof shutter 113 is closed by the movement of the insertion / extraction holder 500 and the action of the locking spring 118. Thereafter, the MD is pushed further forward (lower side in FIG. 6B) to complete the discharge. Accordingly, in this case, the engagement with the locking spring 118 engaged with the engagement hole 116 of the dustproof shutter 113 is released by the driving force of the transfer drive mechanism 700a (FIG. 13).

  That is, in the conventional insertion / extraction mechanism, the movement of the clamper 400 is only in the vertical direction. Therefore, in order to secure the amount of protrusion of the MD at the time of ejection, the locking spring 118 gets over the engagement hole 116 and further forwards to the MD. The driving force over the locking spring 118 must depend on the transfer driving mechanism 700a. For this reason, conventionally, if the locking spring 118 is deformed or there is a burr or the like in the engagement hole 116 formed in the dust-proof shutter 113, there is a problem that an extra load is applied to the transfer drive mechanism 700a. .

  On the other hand, if the spring pressure of the locking spring 118 is too weak, MD may be discharged without the dustproof shutter 113 being closed. On the other hand, if the spring pressure of the locking spring 118 is too large, A large driving force is required to get over the spring 118. For this reason, there is a problem that the appropriate range of the spring pressure is narrow, and the cost is high in order to suppress manufacturing variations.

  On the other hand, as shown in the figure, in the first embodiment, the state in which the locking spring 118 is engaged with the MD engagement hole 116 is the MD discharge completion state (the engagement hole 116 is Therefore, the force for overcoming the locking spring 118 substantially depends on the operation force when the user takes out the MD by hand, and thereby the transfer drive mechanism 700. Even if the locking spring 118 is deformed (variation in shape) or there is a burr in the engagement hole 116, the MD can be easily taken out by the user's operation. Can be done.

  Further, since the clamper 400 moves not only in the vertical direction but also in the front-rear direction as in the prior art by the function of the movement control member 900, it is possible to secure the MD projecting amount t as the conventional projecting amount t. .

  As described above, in the first embodiment, the disposition position of the locking spring 118 that opens and closes the dust-proof shutter 113 is the position where the engagement hole 116 and the locking spring 118 engage when the MD discharging operation is completed. Therefore, a large driving force for overcoming the locking spring 118 by the driving force (disengagement between the engagement hole 116 and the locking spring 118) is unnecessary, and therefore the transfer driving mechanism The load on 700 can be reduced and the MD can be taken out reliably.

  Further, as described above, since the MD is manually taken out, the allowable range of the spring pressure and the shape of the member used for the locking spring 118 is widened, and the manufacturing cost can be reduced. .

(Configuration of driving member 600)
Next, the configuration of the driving member 600 will be described with reference to FIGS. Here, FIG. 7A is a plan view showing the overall configuration of the drive member 600, and FIG. 7B is a side view of the drive member 600. FIG. 7C is an enlarged view of a main part showing a state when the MD insertion is completed. FIG. 7-4 is an enlarged side view showing the operation of the drive member 600 when the MD is discharged.

  That is, as shown in the figure, the drive member 600 is formed in a U-shaped cross section including a flat plate portion 610 and a pair of side plate portions 620. In addition, a pair of cutout portions 611 that open toward one side (left side in FIG. 7-1) is formed at one end edge (left side in FIG. 7-1) of the flat plate portion 610 constituting the drive member 600. .

  As described above, the notches 611 are formed at positions corresponding to the front plate 421 constituting the clamper 400 (FIG. 4A) when the disc recording / reproducing apparatus 100 is assembled. The front side plate portion 421 is configured to be freely inserted into the 611. Thus, a large space (margin) between the clamper 400 and the drive member 600 can be secured.

  Further, as shown in FIG. 7B, the side plate portion 620 is formed with a first groove portion 630 located on the upper side of the side plate portion 620 and a second groove portion 640 located on the lower side. The first groove portion 630 includes a skew groove 635 and a circular groove 636, and the first groove portion 630 is fitted with a pair of shaft portions 430 fixed to the clamper 400 (FIG. 5-2). A function of guiding to a predetermined position is provided.

  The second groove portion 640 includes a parallel groove 645 and a circular groove 646. The second groove portion 640 is fitted with a pair of shaft portions 340 fixed to the drive chassis 300 (FIG. 4-2). A function of guiding to a predetermined position in a state is provided.

  The drive member 600 has a function of moving the clamper 400 back and forth and lowering the clamper 400 to the position of the recording / reproducing unit 800. The drive arm 600 moves back and forth, and the gripping arm 520 of the insertion / extraction holder 500 is provided. MD has a function of transferring to the recording / reproducing unit 800 of the disk recording / reproducing apparatus 100.

  More specifically, the driving member 600 is moved back and forth by the driving force of the transfer driving mechanism 700 being transmitted from the plurality of transmission gears 720 to 740 by the rack lever 680. That is, as shown in FIG. 7-3, a flat rack lever 680 and a tension spring 690 are attached to one side of the drive member 600 (on the right side of FIG. 7-3). An oval hole 681 is formed, and a pair of shaft portions 682 and 683 engage with the oval hole 681.

  Further, one end of the tension spring 690 (left side in FIG. 7-3) is connected to a flange 684 formed on one end of the rack lever 680 (left side in FIG. 7-3), while the other end of the tension spring 690 is provided. (The right side of FIG. 7-3) is attached to a flange 622 protruding from the side plate 620 of the drive member 600.

  Further, as described above, rack teeth 686 (FIG. 1) are formed on one side (inside of FIG. 1) of the rack lever 680, and the rack teeth 686 and the transmission gear 740 constituting the transfer drive mechanism 700 are provided. It can be freely meshed.

  Therefore, when the transfer drive mechanism 700 (FIG. 1) is driven, the drive force (rotational drive force) of the drive motor 705 is the worm gear 710, the transmission gear 720, and the transmission gear 730 fixed to the drive shaft of the transfer drive mechanism 700. The rotation of the transmission gear 740 is transmitted to the rack lever 680 via the transmission gear 740, and the rack lever 680 can move back and forth (left and right direction in FIG. 7-3) by this transmission.

  As a result, as shown in FIG. 7-4, along with the movement of the rack lever 680, the drive member 600, which is the MD discharge direction, can move to the front side (left direction in FIG. 7-4). Details of the movement of the drive member 600 will be described later.

(Description of operation of drive member 600 and clamper 400 when MD is inserted)
Hereinafter, with reference to FIGS. 8-1 to 8-4 and FIGS. 9-1 to 9-4, the operation of the drive member 600 and the clamper 400 when the MD is inserted into the disk recording / reproducing apparatus 100 will be described. This will be described in detail. 8A shows a state before the user inserts the MD into the disc recording / reproducing apparatus 100, and FIGS. 8B and 8C show a state when the MD is being inserted. -4 is a diagram showing a state when MD insertion is completed. FIGS. 9-1 to 9-4 are enlarged views showing main parts of FIGS. 8-1 to 8-4.

(State before inserting MD)
As shown in FIG. 8A, before the MD is inserted, the drive member 600 is stopped at the position of the front end portion of the deck chassis 200 (the left side in FIG. 8A) (stop position). Four shaft portions 430 fixed to the side plate portion 420 of 400 (note that only two portions on the near side are shown in FIG. 8A) are upper positions (vertical) of the oblique grooves 635 of the first groove portion 630. Part).

  Further, the four shaft portions 340 (only two on the near side in FIG. 8A) fixed to the side plate portion 320 of the drive chassis 300 are respectively provided in the parallel grooves 645 of the second groove portion 640. It is inserted. At this time, since the drive member 600 is stopped, both the insertion detection switch 601 (FIG. 2) and the insertion completion detection switch 602 are inoperative.

(Operation when inserting MD: parallel movement of clamper 400)
Here, as shown in FIG. 8B, the MD inserted into the clamper 400 by the user is held by the holding arm 520 of the insertion / extraction holder 500 (FIG. 1) provided inside the clamper 400. At this time, the insertion / extraction holder 500 is pushed by the MD and starts moving toward the rear (right side in FIGS. 8-2 and 9-2).

  As a result, the clamper 400 connected to the movement control member 900 (FIG. 1) also starts moving backward. More specifically, when the insertion / ejection holder 500 moves rearward, the lever members 910 and 910 of the movement control member 900 are retracted around the pivot 465 toward the rear. As a result, the clamper 400 also moves backward.

  As the clamper 400 moves backward, the shaft portion 430 of the clamper 400 abuts (collides) with the rear side of the skew groove 635 (the right vertical portion in FIG. 9-2). The drive member 600 starts moving rearward in the same manner as the clamper 400 while extending the tension spring 690 rearward (FIG. 8-2). Here, the shaft portions 682 and 683 of the drive member 600 move rearward while sliding in the oval hole 681 formed in the rack lever 680 (FIG. 9-2).

  At this time, since the insertion detection switch 601 is pushed and operated by the convex portion 621 of the drive member 600 as the drive member 600 moves backward, the transfer drive mechanism 700 is operated. The driving force is transmitted from the worm gear 710 to the rack lever 680 via a plurality of transmission gears 720, 730, and 740 (FIG. 1). Thereafter, the MD insertion operation is performed by the operation of the transfer drive mechanism 700 even if the user releases his / her hand.

  That is, since the rotational driving force (counterclockwise rotation) of the transmission gear 740 is transmitted to the rack lever 680, the rack lever 680 starts to move rearward, whereby the front end portion of the oblong hole 681 ( The left side in FIG. 8-2 abuts on the shaft portion 682 and pushes the shaft portion 682 rearward, thereby causing the drive member 600 to move rearward.

  At this time, as the driving member 600 moves backward, the shaft portion 430 of the clamper 400 comes into contact with the front side of the skew groove 635 of the drive member 600 (the left vertical portion in FIG. 9-2). 635 is pushed backward by 635. Therefore, the clamper 400 starts to move further backward while sliding on the upper side portion 301 of the side plate portion 320 of the drive chassis 300 (FIG. 9-2). At this time, since the insertion / extraction holder 500 is pulled into the clamper 400 by the action of the movement control member 900, the MD is also pulled into the clamper 400 accordingly.

  Further, at this time, the movement of the clamper 400 is amplified by the action of the movement control member 900 (the principle of the lever) and transmitted to the insertion / extraction holder 500, so that the MD can be drawn into the inside with a small movement of the clamper 400.

(Operation when inserting MD: vertical movement of clamper 400)
8-3, when the driving member 600 further moves rearward and the movement position of the shaft portion 430 of the clamper 400 reaches the notch portion 325 (FIG. 9-3), the shaft portion 430 is The side plate 320 falls from the upper side 301 to the notch 325 and starts to descend along the skewed portion of the skew groove 635 (at this time, the center of the MD is mounted in the drive chassis 300). And is pulled into the clamper 400 up to a position coinciding with the center of the turntable 811). That is, the position of the clamper 400 is thereby lowered in the vertical direction (downward in FIG. 9-3).

(MD insertion completion operation)
Hereinafter, as shown in FIG. 8-4, when the driving member 600 further moves rearward, the shaft portion 430 of the clamper 400 and the shaft portion 340 of the drive chassis 300 are circles of the first and second groove portions 630 and 640, respectively. It reaches almost the center of the hole grooves 636 and 646. At this time, as shown in FIG. 9-4, the shaft portion 430 of the clamper 400 reaches the bottom of the notch portion 325 of the drive chassis 300, so that the clamper 400 contacts the drive chassis 300.

  At this time, since the convex portion 621 (FIG. 2) of the driving member 600 presses the insertion completion detection switch 602, the driving by the transfer driving mechanism 700 is stopped. Thereby, the movement operation of the rack lever 680 and the drive member 600 is completed, and the insertion of the MD is completed. That is, according to the operations shown in FIGS. 8A to 8D, the MD inserted by the user is placed on the turntable 811 (FIG. 12) and can be recorded / reproduced.

  As described above, the shaft portion 430 of the clamper 400 and the shaft portion 340 of the drive chassis 300 are located at substantially the center of the circular groove 636, 646 of the first and second groove portions 630, 640. 340 and 430 are not in contact with the drive member 600, and the four support springs 370 attached to the deck chassis 200 and the three damper members 364 are in a state where the drive chassis 300 and the clamper 400 are integrated. Only supported in a floating state (FIG. 3). For this reason, even if the deck chassis 200 vibrates due to some factor, this vibration is not transmitted to the MD or the drive chassis 300, and good recording / reproduction can be realized.

  As described above, according to the disc recording / reproducing apparatus 100 according to the first embodiment, since the movement control member 900 is provided, the insertion / extraction operation of the MD can be performed reliably, and the insertion / extraction that has been provided conventionally is provided. By eliminating the need for a drive transmission mechanism such as an insertion / ejection lever for moving the ejection holder and a rack lever for driving the insertion / ejection lever, the disc recording / reproducing apparatus 100 can be reduced in size.

  In addition, since the movement control member 900 can amplify the movement stroke of the insertion / extraction holder 500 as the clamper 400 moves back and forth, the size (width dimension) of the disk recording / reproducing apparatus 100 itself can be suppressed. However, the travel distance when MD is discharged can be increased. In addition, when the MD is taken out, it is possible to secure a sufficient discharge amount when taking out the MD, and it is possible to improve the operability when the user inserts the MD.

(Emission Support Organization)
Next, Example 2 according to the present invention will be described in detail. Here, the feature of the second embodiment is that a discharge support mechanism for the clamper 400 accompanying the movement of the drive member 600 is provided. Here, FIG. 10-1 shows the position of the driving member 600 before the MD discharging operation (during performance) in the second embodiment, and FIG. 10-2 shows the position of the driving member 600 when the MD discharging operation is completed. It is explanatory drawing shown, respectively. Hereinafter, the configuration and operation of the discharge support mechanism for the clamper 400 will be described in detail with reference to FIGS.

  That is, as shown in FIG. 10A, the discharge support mechanism includes a discharge support lever 780 attached to a predetermined position of the side plate portion 620 constituting the drive member 600. The discharge support lever 780 has a pivot 781 on the side plate. A substantially rectangular shape having a rotating arm portion 782 that is attached to the portion 620 and that rotates around the pivot 781 and a projecting piece 783 that is formed from the base end side to the lower side of the rotating arm portion 782. It is comprised by the plate member of the type | mold.

  In the discharge assist lever 780 configured as described above, the tip end portion 780a (the right end portion in FIG. 10-1) of the discharge support lever 780 is the same as the tip end portion 680a (the left end portion in FIG. 10-1) of the rack lever 680. It arrange | positions in the position which contact | abuts. Further, the projecting piece 783 is configured to enter into the notch 212 formed in the deck chassis 200 and abut against the edge of the notch 212 when the drive member 600 moves.

  Specifically, a tension spring 785 is attached between the rotating arm portion 782 of the discharge assist lever 780 and the deck chassis 200, and the discharge support lever 780 is rotated clockwise (see FIG. The urging force toward the lower side of 10-1 is acting.

  Further, the position and protrusion amount (protrusion amount) of the projecting piece 783 are set so as to abut against the end edge of the notch 212, and the projecting piece 783 is notched only when the drive member 600 is moved. It is arranged at a position where it collides with 212. In the second embodiment, a tension spring 785 is attached between the tip of the discharge assist lever 780 and the deck chassis 200. However, any member that urges the discharge assist lever 780 clockwise can be pulled. Instead of the spring 785, a spring member such as a mainspring spring may be used.

Here, in FIG. 10A, the interval between the shaft portion 430 of the clamper 400 positioned substantially in the center of the first groove portion 630 formed in the side plate portion 620 and the skew groove 635 is t ₁ , and the notch If the distance between the edge and the projecting piece 783 parts 212 was t _2, is preferably set as the interval t ₂ becomes larger (interval t ₁ <interval t ₂₎ than the interval t _1. As shown in FIGS. 10-1 to 10-2, the discharge assist mechanism is operated until the shaft portion 430 of the clamper 400 located substantially at the center of the first groove portion 630 rides up to the position of the skew groove 635. This is to make it function.

  That is, the driving force in the discharge direction by the rack lever 680 is directly applied to the drive member 600 by the discharge support lever 780 until the protruding piece 783 of the discharge support lever 780 abuts the notch 212 (initial discharge). Can be transmitted. After the projecting piece 783 of the discharge assist lever 780 abuts the notch 212 (late discharge stage), the moving force on the drive member 600 is transmitted via the spring force of the tension spring 690 of the rack lever 680. Will be.

  That is, since the fixing function by the discharge support lever 780 (contact between the discharge support lever 780 and the rack lever 680) is released when the discharge is completed, for example, when the user inserts the MD, the drive member 600 moves. Can be performed by using the elasticity of the tension spring 690, and thereby the user can have a good feeling of use and operability when inserting the MD.

  Further, for example, when the MD is about to be discharged, even if the user tries to insert the MD forcibly, the contact state (fixed state) between the discharge support lever 780 and the rack lever 680 is released at this time. Because of the separation (FIG. 10-2), the pressing force associated with the insertion of the MD is not transmitted to the transfer drive mechanism 700 via the discharge assist lever 780 and the rack lever 680, and is pulled by the tension spring 690. Can be absorbed.

  Thereby, a large load (unreasonable force) is not applied to the drive motor 705 constituting the transfer drive mechanism 700, and damage to the transfer drive mechanism 700 can be avoided. In this case, the positional relationship between the projecting piece 783 of the discharge assist lever 780 and the notch 212 is set so that the fixing function by the discharge assist lever 780 is released by the time when the MD starts to be discharged out of the playback device at the latest. You just have to.

  Specifically, the timing at which the protruding piece 783 of the discharge assist lever 780 abuts the notch 212 is, for example, that the shaft 430 of the clamper 400 fitted in the notch 325 of the drive chassis 300 The positional relationship between the projecting piece 783 of the discharge assist lever 780 and the notch 212 may be set so as to substantially coincide with the timing of separation from the notch 325.

  The details of the operation of the discharge support lever 780 constituting the discharge support mechanism described above will be described below. That is, as shown in FIG. 10A, when the MD is completely inserted (initial discharge state), the front end 780a of the discharge assist lever 780 (the right end of FIG. 10-1) and the front end 680a of the rack lever 680 ( The left end portion of FIG. 10-1 is in contact with each other, so that both maintain a fixed state.

  Next, as shown in FIG. 10-2, when there is an ejection instruction (MD ejection operation), the driving force by the transfer drive mechanism 700 (FIG. 1) is transmitted via the worm gear 710, the transmission gears 720 to 740, and the rack teeth 686. The rack lever 680 is transmitted to the rack lever 680, and the driving force causes the rack lever 680 to start moving toward the front side (left direction in FIG. 10-2).

  For this reason, the rack lever 680 starts pressing the discharge assist lever 780 toward the front (left side in FIG. 10-2). As a result, the discharge assist lever 780 also starts moving toward the front side together with the rack lever 680. Accordingly, the drive member 600 to which the discharge assist lever 780 is connected also starts moving toward the front side.

  Then, as shown in the figure, when the discharge assist lever 780 moves and the projecting piece 783 of the discharge support lever 780 abuts the notch 212, the pivot arm 782 of the discharge support lever 780 is pivoted 781. Is pivoted counterclockwise against the spring force of the tension spring 785, thereby releasing the contact between the discharge assist lever 780 and the rack lever 680 that have been in contact with each other (the fixation is released). ).

  On the other hand, when the MD is inserted by the user and the drive member 600 moves rightward (right side in FIG. 10-2), the protrusion 783 and the cutout portion 212 of the discharge assist lever 780 are moved along with this movement. Accordingly, the discharge assist lever 780 is rotated clockwise by the spring force of the tension spring 690, and returns to the fixed state shown in FIG.

  In the case of the discharge support mechanism described above, the clamper 400 can be reliably discharged even when an excessive load is applied during MD discharge. That is, conventionally, since the driving member 600 is driven only by the spring force of the tension spring 690, the tension spring 690 extends at the initial stage of discharging the MD having a relatively large load. As a result, the discharging operation of the clamper 400 is prevented. Problems such as failure to perform well have occurred (insufficient driving force that causes the shaft portion 430 of the clamper 400 to disengage from the notch portion 325 occurs).

  On the other hand, when the shaft portion 430 of the clamper 400 is detached from the cutout portion 325, the load is reduced and the tension spring 690 is suddenly contracted, so that the usability is deteriorated such that the MD jumps out vigorously. However, as described above, in the second embodiment, the driving force in the discharge direction by the rack lever 680 is applied until the protruding piece 783 of the discharge support lever 780 collides with the notch 212 (discharge). Initially, since it is directly transmitted to the drive member 600 by the discharge assist lever 780, the clamper 400 can be reliably discharged by the transmission drive force by the discharge support lever 780, not by the spring force of the tension spring 690.

  Further, in the latter half of the discharge, the moving force with respect to the drive member 600 is transmitted via the spring force of the tension spring 690 of the rack lever 680 instead of the discharge assist lever 780 as in the prior art. As a result, the tension spring 690 does not contract suddenly, and the usability and operability when the user takes out the MD is improved.

(Movement lock mechanism for drive chassis 300 by lock member 660)
Next, Example 3 according to the present invention will be described in detail. Here, in the third embodiment, when the drive chassis 300 (FIG. 4A) is in the ejected position (when the ejection of the MD is completed), a movement lock mechanism (lock member) that restricts the forward / backward movement of the drive chassis 300. 660). Hereinafter, with reference to FIG. 11A and FIG. 11B, details of the movement lock mechanism for the forward / backward movement of the drive chassis 300, which is a feature of the third embodiment, will be described.

  Here, FIG. 11-1 shows a state when MD ejection is completed (when the movement lock mechanism is in operation), and FIG. 11-2 shows a state when MD insertion is completed (when the movement lock mechanism is released). It is. As will be described later, when the MD is inserted by the user, the lock mechanism by the lock member 660 is released as the drive member 600 moves.

  That is, the disk recording / reproducing apparatus 100 is provided with a drive chassis provided inside the disk recording / reproducing apparatus 100 due to an impact caused by a drop accident during transportation from the manufacturing factory (abrupt movement of the driving member 600). 300 may be damaged.

  More specifically, the shaft portion 340 provided in the side plate portion 320 of the drive chassis 300 disposed inside the disc recording / reproducing apparatus 100 is formed by the parallel grooves 645 formed in the side plate portion 620 of the drive member 600. Since it is supported, there is a possibility of moving in the front-rear direction (left-right direction in FIG. 11-1) due to some impact upon completion of MD ejection. Therefore, in the third embodiment, when the drive chassis 300 is in the ejected position (FIG. 11-1) at a predetermined position of the side plate portion 620 constituting the drive member 600, the drive chassis 300 is restricted from moving back and forth. A movement lock mechanism (lock member 660) is provided.

  That is, as shown in FIG. 11A, the side plate portion 620 constituting the driving member 600 is formed with a sliding groove 650 in which a pair of upper and lower parallel grooves 651 and 651 are continuous with an oblique groove 652. A lock member 660 constituting a movement lock mechanism is attached to the moving groove 650.

  More specifically, a sliding shaft 653 protrudes inward from the upper end of the lock member 660, and the sliding shaft 653 is fitted into a parallel groove 651 positioned above the sliding groove 650. ing. As shown in the figure, when the MD is completely discharged, the sliding shaft 650 of the lock member 660 is in contact with the end edge of the parallel groove 651 (the right end edge in FIG. 11-1). . Further, a through hole 655 for inserting a pivot 341 projecting from the deck chassis 200 is formed at a lower position of the lock member 660, and the pivot 341 is inserted into the through hole 655.

  Further, on one end side (the left side in the drawing) of the lock member 660, a protrusion 661 formed downward is provided. The lower end edge of the protrusion 661 and the lower surface 660a of the lock member 660 are: Since the top surface portion 200a of the deck chassis 200 is in contact with the top surface 200a, the lock member 600 is attached in an upright state.

  For this reason, the lock member 660 is configured to be deviated only toward one side (clockwise in the figure) around the pivot 341. Further, the lock member 660 is formed with a notch 654 that opens from the end edge of the protrusion 661 toward the lower side (downward in FIG. 11-1). The shaft portion 340 of the chassis 300 is engaged. Further, an engaging portion 659 is formed at an upper position of the notch portion 654, and the shaft portion 340 is also engaged with the engaging portion 659. As will be described later, the engaging portion 659 and the shaft portion 340 are engaged when the drive chassis 300 moves in the direction B in the drawing.

(Locking operation by the locking member 660)
Hereinafter, the lock operation by the lock member 660 constituting the above-described movement lock mechanism will be described. That is, as shown in FIG. 11A, the drive member 600 is moved in the discharge direction (left side in the drawing) when the MD is completely discharged, so that the sliding shaft 653 of the lock member 660 is formed on the drive member 600. It is in contact with the end edge (right end in the figure) of the parallel groove 651 pressed.

  Further, the lower surface portion 660a of the lock member 660 and the lower end portion of the protrusion 661 are in contact with the upper surface portion 200a of the deck chassis 200, and the notch portion 654 of the lock member 660 is engaged with the shaft portion 340 of the drive chassis 300. Therefore, the drive chassis 300 is configured to be prevented from moving in the A direction by the lock member 660.

  Thus, even when an impact in the direction A in the figure is applied to the disk recording / reproducing apparatus 100, the lock member 660 prevents the drive chassis 300 from moving suddenly, resulting in damage to the drive chassis 300. This can be prevented.

(Unlocking by lock member 660)
Next, unlocking by the locking member 660 described above will be described. That is, as shown in FIG. 11-2, when the MD is inserted by the user, the drive member 600 moves rearward (rightward in the figure), so that the drive member 600 is locked as the drive member 600 moves. The member 660 is deviated clockwise around the pivot 341. For this reason, the engagement between the notch portion 654 of the lock member 660 and the shaft portion 340 of the drive chassis 300 is released.

  Furthermore, since the lower surface portion 660a of the lock member 660 and the lower end portion of the protrusion 661 are separated from the upper surface portion 200a of the deck chassis 200, the lock by the lock member 660 is released. That is, when the user inserts the MD (during setting), the lock mechanism by the lock member 660 is easily released as the drive member 600 moves.

  Here, in the movement lock mechanism described above, the movement lock mechanism by the lock member 660 that functions when the falling direction of the disk recording / reproducing apparatus 100 is the A direction in the figure has been described. When acting in the B direction in the figure rather than in the A direction, the drive member 600 also moves in the B direction, so that the end edge portion (the right end portion in the figure) of the parallel groove 651 formed in the drive member 600 The contact of the lock member 660 with the sliding shaft 653 is separated.

  For this reason, the support on the upper side of the lock member 660 is lost, and the engagement between the notch portion 654 of the lock member 660 and the shaft portion 340 of the drive chassis 300 is released, whereby the lock mechanism by the lock member 660 functions. There is a risk of not doing so.

  Therefore, in the third embodiment, as described above, the locking member 660 itself has a locking mechanism by providing the engaging portion 659 that can be engaged with the shaft portion 340 at the upper end portion of the notch portion 654 of the locking member 660. Is configured to function.

  More specifically, when the falling direction is the B direction, the drive member 600 moves in this B direction, so that the contact between the sliding shaft 653 and the edge of the parallel groove 651 (the right end portion in the figure). At this time, the shaft portion 342 of the drive chassis 300 is engaged with the engagement portion 659 formed at the upper end portion of the notch portion 654 of the lock member 660. To do.

  For this reason, the rotation of the lock member 660 is prevented by the force of the drive chassis 300 itself to move, whereby the movement of the drive chassis 300 can be locked by the lock member 660.

  Although only one lock member is illustrated in FIGS. 11A and 11B, a similar lock mechanism can be provided on the side surface on the opposite side of the drive member 600. In this case, since the drive chassis 300 is locked on both sides, the drive chassis 300 can be more reliably protected from an impact such as dropping.

  In Embodiments 1 to 3 described above, the playback apparatus of the present invention is applied to a music disk recording / playback apparatus. However, the present invention is a disk recording / playback for recording / playing back a music MD. The present invention can be applied not only to the apparatus but also to a disk insertion / ejection mechanism and a front loading mechanism in each player that reproduces a disk such as a CD (Compact Disk) and a DVD (Digital Video Disc).

  In the first to third embodiments described above, the recording medium used in the disk recording / reproducing apparatus 100 has been described as an MD. However, the reproducing apparatus of the present invention performs recording as in the MD shown in the first to third embodiments. The medium is not necessarily limited to a disk-shaped recording medium, and may be a recording medium that is not disk-shaped, such as a cassette tape. Furthermore, it goes without saying that the present invention can also be applied to a recording medium that does not require driving of the medium for recording / reproduction, such as an IC memory card.

  As described above, the playback device of the present invention is suitable for an on-vehicle playback device that constitutes an audio system mounted on an automobile.

1 is a schematic diagram illustrating the overall configuration of a disk recording / reproducing apparatus according to a first embodiment. It is the schematic which shows the state at the time of completion of insertion of the same MD. It is a figure which shows schematic structure of the disc recording / reproducing apparatus and recording / reproducing part. It is a top view which shows the structure of a drive chassis. It is a side view which shows the structure of a drive chassis. It is a top view which shows the structure of a clamper. It is a side view which shows the structure of a clamper. It is the schematic which shows the position of the clamper at the time of MD discharge operation completion by the present Example 1 (at the time of completion of ejection). It is a figure which shows the position of the clamper at the time of MD discharge operation completion by the prior art and the present Example 1 (at the time of completion of ejection), respectively. It is a top view which shows the structure of a drive member. It is a side view which shows the structure of a drive member. It is a principal part enlarged view of FIG. 7-2 (at the time of MD insertion). It is a principal part enlarged view of Drawing 7-2 (at the time of discharge of MD). It is a side view of the drive member which shows the state before inserting MD in a disk recording / reproducing apparatus. It is a side view of the drive member which shows the state in the middle of insertion of MD (horizontal movement). It is a side view of the drive member which shows the state in the middle of insertion of MD (vertical movement). It is a side view of the drive member which shows the state at the time of MD insertion completion. It is a principal part enlarged view of FIGS. 8-1. It is a principal part enlarged view of FIGS. 8-2. It is a principal part enlarged view of FIGS. 8-3. It is a principal part enlarged view of FIGS. 8-4. It is explanatory drawing which shows the structure of the discharge assistance mechanism in the present Example 2. It is explanatory drawing which shows operation | movement of the discharge assistance mechanism. It is a figure which shows the state at the time of completion of discharge of MD in the present Example 3 (at the time of a movement lock mechanism operation | movement). It is a figure which shows the state at the time of completion of insertion of MD (at the time of movement lock mechanism cancellation | release). It is a schematic block diagram which shows the principal part of the conventional disc recording / reproducing apparatus. It is a figure explaining the outline of the moving mechanism by an insertion / extraction holder and a raising / lowering lever. It is expansion explanatory drawing which shows the principal part. It is a side view of the raising / lowering lever which shows the state before inserting MD in a disc recording / reproducing apparatus. It is a side view of the raising / lowering lever which shows the insertion middle state of MD. It is a side view of the raising / lowering lever which shows the state at the time of completion of insertion of MD. It is the schematic which shows internal structure of MD and a clamper.

Explanation of symbols

100, 100a Disc recording / reproducing apparatus 110 Guide groove 113 Dust-proof shutter 200 Deck chassis 212, 325, 654 Notch 300 Drive chassis 301 Upper side 310, 410, 510, 610 Flat plate 320, 420, 620 Side plate 340, 350 430, 682, 683 Shaft portion 400 Clamper 411, 690, 690a, 785 Tension spring 421 Front side plate portion 422 Rear side plate portion 500 Insertion / ejection holder 511 Insertion / ejection lever 520 Grip arm 530 Claw portion 540, 681a, 930 Long hole 600 Drive member 600a Elevating lever 601 Insertion detection switch 602 Insertion completion detection switch 621 Protruding part 622, 684 Spear part 630, 630a First groove part 631, 645 Parallel groove 632, 635 Skew groove 636, 646 Circular hole groove 640, 640a Second groove portion 654 Protruding portion 653 Sliding shaft 659 Engaging portion 660 Lock member 680, 680b Rack lever 681 Oval hole 685 Dowel 686, 688, 689 Rack tooth 700, 700a Transfer drive mechanism 780 Discharge support lever 781 Pivot 782 Rotating arm portion 783 Projection piece 800 Recording / reproducing portion 900 Movement control member

Claims (10)

A playback device comprising an insertion / discharge mechanism for setting or discharging a recording medium having a dustproof shutter for protecting the recording surface at a reproducible position,
The insertion / ejection mechanism is
A leaf spring member that closes the dust-proof shutter by engaging with the engaging portion of the dust-proof shutter when the recording medium is discharged;
The reproducing apparatus according to claim 1, wherein the fixed position of the leaf spring member is selected to be a position engaged with an engaging portion of the dustproof shutter when the discharge of the recording medium is completed. A playback device having an insertion / ejection mechanism for setting a recording medium at a reproducible position or discharging a recording medium from the reproducible position,
The insertion / ejection mechanism is
A drive member for conveying and driving the recording medium;
A drive transmission mechanism for transmitting a drive force to the drive member;
A reproducing apparatus comprising: a transmission support member that supports transmission of power from the drive transmission mechanism to the drive member during the discharge operation of the recording medium.   The reproducing apparatus according to claim 2, wherein the transmission support member supports transmission of power from the drive transmission mechanism to the drive member at an initial stage when the recording medium is ejected.   The transmission support member is a claw member that is rotatably provided on the drive member, and the transmission support member is configured such that a tip of the claw member engages with the drive transmission mechanism when the recording medium is ejected. 4. The reproducing apparatus according to claim 2, wherein transmission of power from a transmission mechanism to the driving member is supported. A playback device having an insertion / ejection mechanism for setting a recording medium at a reproducible position or discharging a recording medium from the reproducible position,
A drive chassis comprising a reproducing unit for reproducing the recording information of the recording medium;
A floating mechanism for holding the drive chassis in a floating state;
A reproducing apparatus comprising: a movement lock mechanism for restricting movement of the drive chassis by the floating mechanism in accordance with the discharging operation of the recording medium by the insertion / ejection mechanism. The recording medium is provided with a driving member for setting the recording medium to the position of the reproducing unit or discharging the recording medium from the position of the reproducing unit, and the driving member is provided with a groove,
The drive chassis is provided with a shaft that engages with the groove and moves along the groove,
The movement lock mechanism is
6. The moving lock member for restricting movement of the shaft portion of the drive chassis along the groove portion as the recording medium is discharged by the insertion / discharge mechanism. Playback device.   The movement lock member is rotatably supported by a pivot provided at one end of the movement lock member, and the other end is slidably supported with respect to the drive member. The playback apparatus according to claim 6, wherein the shaft portion of the drive chassis is restricted from moving along the groove portion by rotating around the pivot shaft.   The movement lock member is provided with a notch portion that can be fitted into the shaft portion of the drive chassis, and the shaft portion of the drive chassis moves along the groove portion by the engagement between the notch portion and the shaft portion. The playback apparatus according to claim 7, wherein movement is restricted.   The movement lock mechanism is configured to prevent movement when an external force is applied to the drive chassis to prevent the engagement between the shaft part and the notch part from being released due to the movement of the movement lock member. The playback apparatus according to claim 8, further comprising a mechanism. The movement lock member is provided with a first notch, and the movement of the shaft along the groove is restricted by the engagement of the first notch and the shaft. With
The movement blocking mechanism is
An external force is applied to the drive chassis. The second notch is formed from a position where the first notch is formed in a direction substantially perpendicular to the direction of formation of the first notch. Sometimes, the engagement between the second notch portion and the shaft portion of the drive chassis prevents the disengagement between the shaft portion and the first notch portion. The playback apparatus according to claim 9.

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