JPH0773563A - Information recording medium recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a device capable of supplying power from a common driving source to both of a floating locking mechanism and a loading mechanism in the recording and reproducing device of a type loading an information recording medium with a mechanical engagement. CONSTITUTION:A driving source not shown in figure supplies a driving power to a loading arm 6 (a loading means) loading a cartridge C through a floating locking means not shown in figure and a first loading guiding plate 1. The arm 6 is connected with the engagement between the connecting pin 11b of an ejecting link 11 and the connecting groove 1b of the plate 1, however, when the movement of the plate 1 in the direction of an arrow FO is completed. the engagement is disengaged and then the link 11 and the arm 6 are detached from the plate 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium recording / reproducing apparatus, and more particularly to an information recording medium recording / reproducing apparatus in which a player section is in a floating state when recording / reproducing is performed on the information recording medium. It is a thing.

[0002]

2. Description of the Related Art In a car-mounted CD player, cassette player or the like, a medium such as a CD or a compact cassette is generally inserted directly into the player so as to be mounted in the player section.

In the cassette player, a part of the cassette to be inserted is mechanically engaged by using an arm attached to a holder that can be raised and lowered, and the cassette is loaded into the holder by the rotating operation of this arm. This holder is lowered to a position facing the head after the cartridge is completely retracted. On the other hand, in a CD player, a CD is sandwiched by a loading roller and the disc is pulled into the player by the rotation of the roller.

By the way, in an optical disk player such as a CD, the pickup needs to accurately follow a track formed on the medium, and in order to prevent a track jump or the like,
A so-called floating mechanism is used. Since it is necessary to accurately perform the disc insertion operation when the disc is loaded, the floating mechanism is locked (fixed) except when reproducing.

The mechanism for this floating lock (hereinafter referred to as the floating lock mechanism) is designed to utilize the power of the rotation driving motor of the loading roller for the sake of simplification of the construction.

[0006]

In recent years, an MD (Mini Disc) has appeared as an information recording medium, but the cartridge of this MD is smaller than a CD and has a rectangular contour. However, it is difficult to stably load the MD using the loading roller as in the conventional CD player.

For this reason, a structure is considered in which the MD is pulled in by mechanical engagement like a cassette player.
As described above, in the optical disc player, the player unit has to have a floating structure.
Like a player, it is difficult to perform the floating lock mechanism by using the power of the loading mechanism, and the structure becomes complicated.

That is, the floating lock mechanism is attached to the casing side (fixed side) of the player device, while the loading mechanism is attached to the side which is floated from the casing, so that a single drive source causes the floating state. When power is supplied to both the locking means and the loading means, a driving device on the loading side (when the driving source is provided on the housing side).
A drive device on the floating lock side when the drive source is provided on the floating side. ) Must be provided with a power biasing device (a power transmission direction changing device such as a universal joint), which complicates the structure.

[0009]

In order to solve the above problems, the invention according to claim 1 supplies power to both the medium loading means and the floating lock means from a single drive source. In the information recording medium recording / reproducing apparatus, when the floating lock is released by the floating lock means, the power transmission path of the power transmission means from the power source to one of the loading means and the floating lock means is cut off. There are features.

According to a second aspect of the present invention, there is provided a cartridge holder for accommodating the information recording medium, a loading means provided on the cartridge holder for loading the information recording medium, and recording and / or recording the information recording medium.
Alternatively, recording / reproducing means for reproducing, floating means for floatingly supporting a floating portion including the cartridge holder and the recording / reproducing means with respect to the housing, and floating lock means provided on the housing side for locking the floating means. A power source provided on the housing side for supplying power to both the loading means and the floating lock means; and a power transmission means for transmitting the power of the power source to the loading means and the floating lock means. And a path blocking means for blocking a power transmission path of the power transmission means from the power source to one of the loading means and the floating lock means when the floating lock means releases the floating lock. .

According to a third aspect of the present invention, the loading means is provided with a loading arm for retracting the cartridge into the cartridge holder, the power transmission means is provided with an eject link and a loading guide plate, and the path blocking means is provided with: It is characterized in that a connecting pin provided on the eject link and the loading plate and a connecting groove having an open end are provided at one end for connecting the eject link and the loading guide plate.

According to a fourth aspect of the present invention, the eject link is provided coaxially with the loading arm, and
A pressing portion for pressing the arm and the connecting pin are provided, the connecting groove is provided in the loading guide plate, and the connecting pin disposed inside the connecting groove moves as the loading guide plate moves. The feature is that it is formed so as to separate from.

A fifth aspect of the present invention is characterized in that the connecting groove is provided with a tip portion for receiving the connecting pin.

According to a sixth aspect of the present invention, the loading means is provided with a loading arm for retracting the cartridge into the cartridge holder, the power transmission means is provided with an eject link and a loading guide plate, and the path blocking means is provided with: It is characterized in that a connection groove and a connection pin, which have an open end at one end, are provided on the eject link and the loading plate for connecting the eject link and the loading guide plate.

[0015]

According to the first and second aspects of the present invention, the power transmission path from the power source to one of the loading means and the floating lock means is cut off, so that one of the one of the fixed sides of the housing is fixed from the common drive source. It is possible to supply power not only to the means but also to the other means on the floating side without any trouble. That is, it is possible to supply power to both the floating lock means and the loading means from a single drive source without providing a special power biasing device.

In the invention according to claims 3 to 6, the power is cut off by using the connecting pin and the connecting groove having an open end at one end thereof. Therefore, the power can be cut off by an extremely simple device. realizable.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. In this embodiment, a cartridge containing an information recording medium is drawn into a holder (cartridge holder) arranged on a turntable and housed, and then the cartridge holder is lowered to a disk in the cartridge on the turntable. The disc player is configured to be mounted with. In the following description, the cartridge is the MD and the disc player is the MD player.

A. Floating lock mechanism For MD players, drive unit D for playing MD
Is movably attached to the chassis unit A (see FIG. 1) by a floating means (not shown) including a damper and a damper spring, and the floating state of the floating unit F including the drive unit D is locked and floated. A floating lock mechanism for fixing the unit F to the chassis unit A is provided.

The floating lock mechanism includes locked portions D1 and D2 provided on the side surface of the drive unit D.
(FIG. 3) and D3 (FIG. 4) and these locked portions D1,
It has a lock claw capable of engaging with D2 and D3. Lock claws 2b and 2c that can be engaged with the locked portions D1 and D2
Is the second loading guide plate 2 (see FIG.
See). A member (not shown) having an engaging claw that can be engaged with the locked D3 is configured to operate in synchronization with the second loading guide plate 2 by a known appropriate method.

B. Cartridge Loading Mechanism The loading mechanism for loading the MD into the disc player is composed of a cartridge retracting mechanism for retracting the cartridge into the cartridge holder 4 and a dropping mechanism for dropping the cartridge holder in which the cartridge is retracted onto the turntable. To be done.

In this example, the cartridge retracting mechanism comprises a loading arm 6 having a clamper 102 and an eject link 11. This clamper 102 is provided with an engaging claw capable of engaging with a recess C1 provided on the side surface of the cartridge C, and a shaft 10 is provided at the tip of a loading arm 6 rotatably provided around a shaft 6c.
It is attached so as to be rotatable around 2c. The clamper 102 is biased clockwise in FIG. 1 by a coil spring (not shown). As a result, when the cartridge C is inserted into the cartridge holder 4, the engagement claw 101 engages with the recess C1.

B-1. Loading arm 6 The loading arm 6 has an abutting portion 6c at its front edge.
(See FIG. 1). One end of an arm spring 6d is attached near the rear end of the loading arm 6. The other end of the arm spring 6d is attached to the right end of the eject link 11,
Due to the elastic force of the arm spring 6d, the contact portion 6c is in contact with a pressing portion 11d, which will be described later, so that the loading arm 6 and the eject link 11 are interlocked with each other.

B-2. Eject Link 11 The eject link 11 is a member that connects the loading arm 6 and a first loading guide plate 1 described below, and is disposed above the loading arm 6 and is a spindle 11a that is coaxial with the spindle 6a. It is attached so as to be rotatable in the horizontal direction with the fulcrum as a fulcrum. A connecting pin 11 protruding upward is provided at the left end of the eject link 11.
b is provided. Further, the other end of the link spring 11c, one end of which is attached to the upper surface of the cartridge holder 4, is attached to the front end of the eject link 11 so that the eject link 11 is slightly counterclockwise from the position in FIG. When turned to, link spring 11
The eject link 11 is biased counterclockwise in FIG. 1 by c. Further, a pressing portion 11d for pressing the contact portion 6c of the loading arm 6 is formed at the front end of the eject link 11.

C. Members Constituting Floating Unit F The floating unit F includes a drive unit D, a cartridge holder 4, a holder arm 5, the loading arm 6 and the eject link 11, and the like.
It is a group of parts that are in a floating state when reproducing D (see FIGS. 1 to 4).

C-1. Drive Unit D The drive unit D has a turntable t attached to a spindle motor (not shown), and rotates the disk accommodated in the cartridge C. The locked portions D1 and D2 described above are provided on the left side surface portion of the drive unit D, and the locked portion D3 is provided on the right side surface portion. Further, guide grooves D4, D5 cut out in the vertical direction are provided at the left and right side edge portions of the drive unit D.

The cartridge C has a lower surface when the disc housed therein is an optical disc (when the disc is a read-only disc), and when the disc is a magneto-optical disc (recordable disc). In this case), an openable and closable shutter S is provided so that the lower surface and the upper surface of the disk can be exposed.

C-2. Cartridge Holder 4 The cartridge holder 4 is a member that holds the cartridge C, and is arranged above the drive unit D.
A cartridge insertion port 4a is provided at the front edge of the cartridge holder 4. The cartridge holder 4 is provided with a pawl for unlocking the shutter S of the cartridge C and a shutter spring (both not shown) for holding the opened shutter S. When the cartridge C is housed in the cartridge holder 4, the shutter S is unlocked by the pawl,
After that, the shutter S is opened by retracting the cartridge C. Therefore, when the cartridge C is placed on the turntable t, the shutter S is in an open state, and the information recording surface of the MD faces a pickup (not shown) provided in the drive unit D.

A holder pin 4b is provided at the center of the left side edge of the cartridge holder 4, and a guide pin 4 is provided at the center of the right side edge.
c are respectively provided so as to project outward. These pins 4b and 4c are guide grooves D of the drive unit D.
4, D5.

C-3. Holder Arm 5 As shown in FIGS. 1 and 2, the holder arm 5 is composed of a pair of side surface portions 5x extending in a substantially vertical direction on the left and right side surface portions of the drive unit D and a horizontal portion 5y connecting the side portion portions 5x. It is attached so as to be vertically swingable about a support shaft 5a provided on the side surface portion 5x. A grip portion 5b for gripping the pins 4b and 4c of the cartridge holder 4 is provided at the rear end of the holder arm 5. Further, one end of the holder spring 5c is attached to the left side surface portion 5x of the holder arm 5, and the other end is attached to the drive unit D side. The holder spring 5c biases the cartridge holder 4 in a direction in which the cartridge holder 4 is pushed down.

Next, the structure of the loading control mechanism provided in this disc player will be described. The loading control mechanism is composed of loading guide plates 1 and 2, a drive system, and the like.

D. First and second loading guide plates 1, 2 First loading guide plate 1 (see FIG. 5) and second loading guide plate 2 (see FIGS. 6 and 7)
Is provided on the left edge of the chassis unit A so as to be slidable in the front-rear direction (directions of arrows FO and RE in FIG. 1). The first loading guide plate 1 is incorporated in the cartridge loading mechanism to load a cartridge, and the second loading guide plate 2 is incorporated in the floating lock mechanism to perform a floating lock. The first and second loading guide plates 1 and 2 are respectively provided with a drive motor 8
Although it is slid by the rotation of, the operation timing of each of the plates 1 and 2 is controlled by the method described later.

The first and second loading guide plates 1 and 2 are respectively provided with a first contact portion 1z and a second contact portion 2z (see FIGS. 5 and 6). , 2 are the first contact portion 1z and the second contact portion 2z.
Are provided in the chassis unit A so as to face each other.

The first loading guide plate 1
A connecting spring 18 (FIG. 1) is attached to the rear end of the second loading guide plate 2 and the front end of the second loading guide plate 2. This connecting spring 18 connects the first loading guide plate 1 to the front side (arrow FO).
Direction) to urge the second loading guide plate 2 to the back side (direction of arrow RE).

D-1. First Loading Guide Plate 1 The first loading guide plate 1 shown in FIGS. 5A to 5C has a U-shaped cross section having a bottom surface portion, a side surface portion, and a top surface portion, of which the right edge of the bottom surface portion. A rack gear 1a is formed in the portion (in FIG. 5A, the bottom portion is viewed from the back side, so the left edge portion).

A cam hole 1b is formed on the side surface of the plate 1 (see FIG. 5B), and a side portion 1f is formed in the cam hole 1b. The holder pin 4b of the cartridge holder 4 is inserted into the cam hole 1b, and the cartridge holder 4
It is configured to control the lifting operation of the.

A connecting groove 1c is formed on the upper surface of the plate 1 so as to gently curve to the right toward the back (FIG. 5).
(See (C)). The eject link 11 is inserted into the connecting groove 1c.
The first loading guide plate 1 and the eject link 11 are connected by inserting the connecting pin 11b, and the connecting pin 11b is released from the connecting groove 1c to release the connection between the two. Further, of the pair of side portions forming the connection groove 1c, the front side edge portion 1d extends longer than the back side edge portion. The tip 1d serves as a guide when the connecting pin 11b enters the connecting groove 1c.

D-2. Second Loading Guide Plate 2 The second loading guide plate 2 shown in FIGS. 6 and 7 is provided with a bottom surface portion and a side surface portion, and the right edge portion of the bottom surface portion (in FIG. 6, the bottom surface portion is viewed from the back side). Therefore, the rack gear 2a is formed at the left edge). Also, lock claws 2b are provided at the back and front end of the bottom of the plate 2.
2c is provided. As described above, the lock claws 2b and 2c engage the locked portions D1 and D2 of the drive unit D and lock the floating unit F.

E. Drive System A drive motor 8, a gear train 9 and a loading guide gear 10 are arranged on the bottom surface of the chassis unit A (shown in FIG. 8).

E-1. Drive Motor 8 and Gear Train 9 The drive motor 8 is a drive source that is controlled by the start switch 7 (FIG. 1) and operates the first and second loading guide plates 1 and 2. The gear train 9 is a gear group that transmits a rotational force from the drive motor 8 to the loading guide gear 10.

E-2. Loading Guide Gear 10 As shown in FIG. 9, the loading guide gear 10 is composed of an input gear 10a, a first output gear 10b, and a second output gear 10c. The input gear 10a is a gear that meshes with a gear on the gear train 9 side, and a rotational force is supplied from this gear to the loading guide gear 10.

As will be described later, the first output gear 10b meshes with the rack gear 1a at the start of the loading operation (FIG. 8), and the rack gear 1b is in the middle of the loading operation.
It is configured so that the engagement with a is completed (FIG. 10 (B)). The second output gear 10c is not meshed with the rack gear 2a at the start of the loading operation (FIG. 8), but is meshed with the rack gear 2a during the loading operation (FIG. 10 (A)). It is configured.

Since the loading guide plates 1 and 2 are biased in the directions of the arrow FO and the arrow RE by the spring force of the connecting spring 18, the meshing of the output gears 10b and 10c with the rack gears 1a and 2a is completed. The rack gears 1a and 2a, the output gear 1
Move away from 0b and 10c.

G. First loading guide plate 1
And the operation timing of the eject link 11 The engagement / disengagement timing of the connecting groove 1c of the first loading guide plate 1 and the connecting pin 11b of the eject link 11 is set as follows. That is, when the first loading guide plate 1 is moved to a position where the cartridge is completely drawn into the cartridge holder 4 and the lowering operation of the cartridge holder 4 is started, the connecting pin 11b is disengaged from the connecting groove 1c. On the contrary, when the first loading guide plate 1 moves to the position where the lifting operation of the cartridge holder 4 is completed, the connecting pin 1 is inserted into the connecting groove 1c.
1b engages.

[Operation of this Embodiment] The operation of the embodiment having the above-described structure will be described separately for the loading operation and the ejecting operation.

Α. Loading Operation (Start of Operation of Drive Motor 8) When the cartridge C is inserted into the cartridge holder 4 as shown in FIG. 1, one concave portion C1 of the cartridge C is engaged with the engaging claw 10 of the clamper 102.
Engage with 1. After the engagement, when the cartridge C is further pushed, the loading arm 6 is moved to the arm spring 6
It rotates counterclockwise in FIG. 1 against the elastic force of d. At this time, the eject link 11 has its connecting pin 1
Since 1b is inserted in the connection groove 1c, it is restricted by the first loading guide plate 1 and does not move.

As a result, the switch pressing portion 6b of the loading arm 6 is separated from the start switch 7, and the drive motor 8 is turned on.

(Start of sliding operation of the first loading guide plate 1) When the drive motor 8 starts rotating,
The driving force is applied to the input gear 10a via the gear train 9 (FIG. 8).
And the loading guide gear 10 rotates.

As described above, at the start of the loading operation (FIGS. 8 and 11), only the rack gear 1a of the first loading guide plate 1 is the first output gear 10.
b, the rack gear 2a of the second loading guide plate 2 does not mesh with the second output gear 10c (FIG. 8). As described above, the elastic force of the connecting spring 18 causes the first loading guide plate 1 and the second loading guide plate 2 to move in the direction of arrow F, respectively.
It is biased in the O and RE directions.

Therefore, the rack 1a slides due to the rotational force of the first output gear 10b, and the first loading guide plate 1 moves to the front side (FIGS. 8 to 10).
(A) ・ From FIG. 11 to FIG. 12).

At the start of loading, as described above, the rack gear 2a of the second loading guide plate 2 is not meshed with the teeth of the second output gear 10c,
At this time, the connecting spring 18 urges the second loading guide plate 2 toward the rear side (direction of arrow RE), that is, in the direction of separating the rack gear 2a from the second output gear 10c. Therefore, at the start of loading, only the first loading guide plate 1 moves.

(Retracting Operation of Cartridge C) At the start of the loading operation, the cartridge holder 4 is in the raised position. Further, as described above, the connecting pin 11b is provided in the connecting groove 1c.
, And the eject link 11 connects the first loading guide plate 1 and the loading arm 6 by the elastic force of the arm spring 6d (FIG. 1, FIG.
8 and 14).

Therefore, the moving force of the first loading guide plate 1 is transmitted to the loading arm 6 by the pressing portion 11d as a pressing force for pushing the contact portion 6c, whereby the loading arm 6 is moved by the first loading guide plate 1. Retracting operation is realized. That is, the loading arm 6 rotates in the counterclockwise direction in FIG. 1 to perform the retracting operation, and the clamper 102 causes the concave portion C of the cartridge C.
The cartridge C is pulled into the cartridge holder 4 while keeping 1 held engaged.

During this withdrawal, the clamper 102 slides along the contact portion 103b of the control plate 103, so that the clamper 102 and the cartridge C are disengaged from each other even if a mechanical load is applied to the cartridge C. There is no.

Even when the drawing of the cartridge C into the cartridge holder 4 is completed, the first loading guide plate 1 continues to move as will be described later, but as a result, as shown in FIG. 11b comes off. By disconnecting the eject link 11 provided on the cartridge holder 4 side from the first loading guide plate 1 provided on the chassis unit A side, the cartridge holder 4 can be floated thereafter. be able to.

Even if the connection between the eject link 11 and the first loading guide plate 1 is released, the eject link 1 is repulsed by the elastic force of the link spring 11c.
1. In other words, the loading arm 6 keeps the cartridge C retracted.

(Start of Sliding Operation of Second Loading Guide Plate 2) First Loading Guide Plate 1
As the movement of the plate 1 proceeds, the first contact portion 1z of the plate 1 (see FIG.
(See (B)) comes into contact with the second contact portion 2z (see FIG. 6) of the second loading guide plate 2 (see FIG. 10 (B),
(Refer to FIG. 12), it is pressed in the direction of arrow FO against the elastic force of the connecting spring 18, whereby the rack 2a of the second loading guide plate 2 starts to mesh with the second output gear 10c.

Therefore, the rotation of the loading guide gear 10 causes the second output gear 10c to slide the rack 2a, and the second loading guide plate 2 is moved to the front side in synchronization with the first loading guide plate 1.

(Cartridge drop operation) When the first loading guide plate 1 moves and the holder pin 4b of the cartridge holder 4 reaches a portion inclined downward of the cam hole 1b (see FIG. 12), the holder spring of the holder arm 5 is moved. Since the grip portion 5b pushes down the holder pin 4b and the guide pin 4c of the cartridge holder 4 by the spring force of 5c, the holder pin 4b descends along the shape of the cam hole 1b. As a result, the guide grooves D4 and D5 guide the pins 4b and 4c, and the cartridge holder 4
Performs a lowering operation, and the cartridge C is dropped and mounted on the drive unit D together with the cartridge holder 4 (see FIGS. 3 and 4).

A magnet (not shown) provided on the turntable t attracts a magnetic material portion (not shown) at the center of the disk in the cartridge C, whereby the disk is held on the turntable t. .

(Stopping the sliding operation of the first loading guide plate 1) At the time when the above-mentioned cartridge dropping operation is completed, the tooth portion of the rack gear 1a which should be meshed with the first output gear 10b disappears, and the first loading guide plate 1 Slide operation stops (Fig. 10
(B)). As a result, the synchronization of the first loading guide plate 1 and the second loading guide plate 2 is completed, and thereafter, only the second loading guide plate 2 continues to move.

The first output gear 10b and the rack gear 1a
As a result, the first loading guide plate 1 is slightly moved in the direction of arrow FO by the elastic force of the connecting spring 18. As a result, the rack gear 1
a is completely separated from the first output gear 10b.

After the movement of the first loading guide plate 1 is completed in this way, the rack gear 1a is moved to the first output gear 10
The reason for separating from b is that the operation of the first loading guide plate 1 needs to be delayed from the operation of the second loading guide plate 2 at the time of ejection, as described later. That is, the rack gear 1a is replaced with the first output gear 10b.
This is because the operation timing of the first loading guide plate 1 may be too early at the time of ejecting unless it is positively separated from.

(Operation of Releasing Locked State of Floating Lock Mechanism) Finally, the movement of the second loading guide plate 2 causes the lock claws 2b and 2c to separate from the locked portions D1 and D2 of the drive unit D (FIG. 10C and (Fig. 13). As a result, the floating lock mechanism is released from the locked state, and the floating unit F enters the floating state. At the time of this floating, the circular portion formed in the cam hole 1b and the hole 2s formed in the second loading guide plate 2 are aligned with each other, and the holder pin 4b is arranged in the center thereof (FIG. 13), whereby the cartridge holder 4 is floated. The area is reserved.

(Stopping the Sliding Operation of the Second Loading Guide Plate 2) A sensor (not shown) indicating that the second loading guide plate 2 has reached the final movement position after the operation of releasing the locked state of the floating lock mechanism is completed. When detected by the switch, the drive motor 8 is stopped and the rack gear 2a moves to the second output gear 10
The sliding operation of the second loading guide plate 1 is stopped in the state of being meshed with c (FIG. 10 (C)).

When the stop of the sliding operation of the second loading guide plate 2 is stopped in this manner, thereafter, the disc mounted on the turntable can be accessed (recorded or reproduced).

Β. Operation when Performing Eject Operation (Unloading Operation) Next, the eject operation of this disc player will be described.

(Start of Sliding Operation of Second Loading Guide Plate 2 and Locking Operation of Floating Lock Mechanism) When a predetermined eject operation is performed from the state shown in FIGS. 10 (C) and 13, the drive motor 8 reverses to the above. The loading guide gear 10 rotates in the direction opposite to that at the time of loading. At the start of such an ejecting operation (that is, the loading completion state), the rack gear 2a of the second loading guide plate 2 only meshes with the second output gear 10c as described above, and the first loading guide plate 1 Rack gear 1
a does not mesh with the first output gear 10b. Further, the connecting spring 18 urges the rack gear 1a in a direction away from the first output gear 10b.

Therefore, the rack 2a slides due to the rotational force of the second output gear 10c, and only the second loading guide plate 1 moves to the back side (direction of arrow RE) (FIG. 10 (C) to FIG. 10 (B)). From Figure 13 to Figure 12
What).

By the movement of the second loading guide plate 2 as described above, the lock claws 2b and 2c are engaged with the locked portions D1 and D2 of the drive unit D, and the floating portion is locked.

(Start of Sliding Operation of First Loading Guide Plate 1) Second Loading Guide Plate 2
The second contact portion 2z of the plate 2 moves to the first
The rack gear 1a of the first loading guide plate 1 is moved to the first contact portion 1z of the loading guide plate 1 and pressed in the direction of the arrow RE against the elastic force of the connecting spring 18 (FIG. 12). The first output gear 10b starts to mesh.

Therefore, when the loading guide gear 10 rotates, the first output gear 10b slides the rack gear 1a, and the first loading guide plate 1 moves to the second
In synchronization with the loading guide plate 2, the back side (arrow R
Move in the E direction).

(Cartridge raising operation) After that, the first loading guide plate 1 moves to the position where the cam hole 1b pushes up the holder pin 4b, and the holder pin 4b rises along the shape of the cam hole 1b (from FIG. 12). (See FIG. 11). As a result, the guide grooves D4 and D5 are attached to the pins 4
The cartridge holder 4 moves up while guiding b and 4c.

(Stopping the sliding operation of the second loading guide plate 2) The second loading guide plate 2
When the floating lock is completed by the action of
The tooth portion of the rack gear 2a that should mesh with the output gear 10c disappears, and the sliding operation of the second loading guide plate 2 stops (FIG. 10 (A)). This makes the first
The synchronization of the loading guide plate 1 and the second loading guide plate 2 is completed, and thereafter only the first loading guide plate 1 continues to move.

The second output gear 10c and the rack gear 2a
The second loading guide plate 2 is slightly moved in the direction of the arrow RE by the elastic force of the connecting spring 18 due to the lack of engagement with the. Thereby, the rack gear 2
a is completely separated from the second output gear 10c.

After the movement of the second loading guide plate 2 is completed in this way, the rack gear 2a is moved to the second output gear 10
The reason for separating from c is that the operation of the second loading guide plate 2 must be delayed from the operation of the first loading guide plate 1 at the time of starting the next loading. That is, the rack gear 2a is connected to the second output gear 10c.
This is because, unless it is positively moved away, the operation timing of the second loading guide plate 2 may be too early at the time of the next loading.

When the floating lock is completed,
The raising operation of the cartridge holder 4 is almost completed.

(Discharging Operation of Cartridge C) When the first loading guide plate 1 is moved to the position where the raising operation of the cartridge holder 4 is completed, the side end portion 1d
The connecting pin 11 of the eject link 11 from the back side
b contacts (state shown in FIG. 15). When the first loading guide plate 1 further moves to the inner side, the eject link 11 rotates and the connecting pin 11b moves to the connecting groove 1c.
Will be inserted into the back of the
The first loading guide plate 1 and the loading arm 6 are connected via 1.

Therefore, the moving force of the first loading guide plate 1 is transmitted from the eject link 11 to the loading arm 6 via the arm spring 6d, and the first loading guide plate 1 executes the discharging operation of the loading arm 6. As a result, the loading arm 6 rotates in the clockwise direction in FIG. 1 to perform a discharging operation, and the clamper 102 exposes the rear end of the cartridge C from the cartridge holder 4 while holding the concave portion C1 of the cartridge C.

(Stopping the sliding operation of the first loading guide plate 1) When the loading arm 6 rotates clockwise in FIG. 1 and the switch pressing portion 6b presses the start switch 7, the switch 7 is driven. Motor 8
Is turned off, which ends the eject operation. When the drive motor 8 is stopped, the sliding operation of the first loading guide plate 1 is stopped while the rack gear 1a remains meshed with the first output gear 10b (state shown in FIG. 8).

When the cartridge C exposed from the cartridge insertion port 4a is pulled out as it is, the clamper 102 rotates against the elastic force of a spring (not shown) for urging the clamper 102 and the engaging claw 101 is recessed. Remove from C1.
As a result, the cartridge C can be taken out.

In the disc player as described above, the power of the drive source provided on the chassis unit A side is supplied to the loading arm 6 provided on the floating unit D side.
The power transmission means for transmitting to the chassis unit A can be disconnected / connected at a predetermined timing.
The loading mechanism provided on the side and the floating lock mechanism provided on the floating side can be operated using a common drive source. This simplifies the structure of the disc player.

In the above example, the drive motor 8 is provided on the chassis unit A side provided with the floating lock mechanism.
The drive motor 8 is used to drive both the floating lock mechanism provided on the chassis unit A side and the loading mechanism provided on the floating unit D side. However, when the drive motor is provided on the floating unit D side, the same effect can be obtained by disconnecting the power transmission means from the drive motor to the floating lock mechanism. Can be obtained. A person skilled in the art can easily think of such cutting means of the power transmission means.

Further, the connecting pin 11b is the eject link 1
1, the connection groove 1c is provided in the first loading guide plate 1, but the connection pin may be provided in the first loading guide plate and the connection groove may be provided in the eject link. .

Further, the present invention is not limited to the above-described embodiments, but the shape, dimensions, etc. of each constituent member can be appropriately changed.

Furthermore, in the above description, the information recording medium is described as an MD, but the present invention is also applicable to an information recording medium recording / reproducing apparatus that handles media other than MD.

Furthermore, the present invention can be applied to any information recording medium recording / reproducing apparatus capable of reproducing only, recording only, and recording / reproducing.

[0087]

According to the first and second aspects of the present invention, power can be supplied to both the floating lock means and the loading means from a single drive source without providing a special power biasing device. . Therefore, the information recording medium recording / reproducing apparatus having the floating lock mechanism can be realized with a simple configuration.

In the invention according to claims 3 to 6, the power is cut off by using the connecting pin and the connecting groove having an open end at one end thereof. Therefore, the power can be cut off by an extremely simple device. realizable.

[Brief description of drawings]

FIG. 1 is a plan view of a disc player according to the present invention, in which a cartridge holder 4, a holder arm 5 and the like are partially cut away.

FIG. 2 is a front view of a floating unit F.

FIG. 3 is a left side view of a floating unit F.

FIG. 4 is a right side view of the floating unit F.

FIG. 5 is a view of a first loading guide plate, (A) is a bottom view, (B) is a side view, and (C) is a plan view.

FIG. 6 is a bottom view of a second loading guide plate.

FIG. 7 is a side view of a second loading guide plate.

FIG. 8 is a plan view (loading start state) showing a drive system and first and second loading guide plates.

9A is a front view showing the first and second loading guide plates and a loading guide gear, and FIG. 9B is a plan view, front view, and bottom view of the loading guide gear.

10A and 10B are plan views showing the operations of the first and second loading guide plates, FIG. 10A is a diagram showing a synchronization start state at the time of loading, FIG. 10B is a diagram showing a synchronization end state at the time of loading, and FIG. Is a diagram at the time of completion of loading.

FIG. 11 is a side view showing the operation of the first and second loading guide plates, and is a diagram showing when loading is started.

FIG. 12 is a side view showing the operation of the first and second loading guide plates, and is a diagram at the start of synchronization at the time of loading.

FIG. 13 is a side view showing the operation of the first and second loading guide plates, and is a diagram when the loading is completed.

FIG. 14 is a plan view showing the operation of the first loading guide plate and the eject link, showing the loading start state.

FIG. 15 is a plan view showing the operation of the first loading guide plate and the eject link, and is a view showing a state in the middle of loading.

[Explanation of symbols]

 C cartridge t turntable 1 first loading guide plate 1a rack gear 1c connecting groove 1z first contact portion 2 second loading guide plate 2a rack gear 2z second contact portion 6 loading arm 8 drive motor 9 gear train 10 loading guide gear 11 Eject link 11d Connection pin 11b 18 Connection spring 102 Clamper

Claims (6)

[Claims] 1. A loading means for loading an information recording medium, a recording / reproducing means for recording and / or reproducing the information recording medium, and a floating means for floatingly supporting a floating portion including the recording / reproducing means with respect to a housing. Floating lock means for locking the floating means, a power source for supplying power to both the loading means and the floating lock means, and power of the power source transmitted to the loading means and the floating lock means Power transmission means, and path cutoff means for cutting off the power transmission path of the power transmission means from the power source to one of the loading means and the floating lock means when the floating lock is released by the floating lock means. Special Information recording medium for recording and reproducing device. 2. A cartridge holder for accommodating an information recording medium, a loading means provided on the cartridge holder for loading the information recording medium into the holder, and a recording / reproducing means for recording and / or reproducing the information recording medium. Floating means for floatingly supporting a floating portion including the cartridge holder and the recording / reproducing means with respect to the housing, floating lock means provided on the housing side and locking the floating means, and provided on the housing side. A power source for supplying power to both the loading means and the floating lock means; a power transmission means for transmitting the power of the power source to the loading means and the floating lock means; During Ngurokku released, the power transmission means, the loading means and the information recording medium recording and reproducing apparatus is characterized in that a path-blocking means for blocking the power transmission path to one of the floating lock means from the power source. 3. The information recording medium recording / reproducing apparatus according to claim 2, wherein the loading means includes a loading arm for retracting the cartridge into the cartridge holder, and the power transmission means includes an eject link and a loading guide. A plate is provided, and the path blocking means comprises a connection pin for connecting the eject link and the loading guide plate, the connecting pin being provided on the eject link and the loading plate, and a connecting groove having an open end at one end thereof. Information recording medium recording / reproducing apparatus. 4. The information recording medium recording / reproducing apparatus according to claim 3, wherein the eject link is provided coaxially with the loading arm, and includes a pressing portion for pressing the arm and the connecting pin. The plate is provided with the connection groove, and the connection groove is formed such that the connection pin disposed inside the loading groove moves away from the open end of the loading guide plate. Recording / playback device. 5. The information recording medium recording / reproducing apparatus according to claim 4, wherein the connecting groove has a tip portion at an open end thereof. 6. The information recording medium recording / reproducing apparatus according to claim 2, wherein the loading means includes a loading arm for retracting the cartridge into the cartridge holder, and the power transmission means includes an eject link and a loading guide. A plate, and the path blocking means comprises a connection groove and a connection pin for connecting the eject link and the loading guide plate, the connection groove having an open end at one end, the connection groove being provided on the eject link and the loading plate. Characteristic information recording medium recording / reproducing apparatus.