JP2001266446A - Recording medium drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem with the conventional constitution that the constitution is heretofore complicated because of a need for setting respective operation modes by using plural mechanisms. SOLUTION: When a cam gear 30 is rotated, a slider 40 is moved in an insertion direction. Simultaneously a detaining member 13 having an engaging pin 13c inserted into an engaging hole 40b is also moved and therefore a cartridge K detained at the detaining member 13 may be moved into the device. Since a supporting piece 12b supported in a cam groove 33 of the cam gear 30 may be downwardly moved, the device may be set at the reproducing mode from the initial mode by way of the loading mode. Further, when the cam gear 30 is rotated, the device is set at the recording mode and the respective operating modes may be set by the single cam gear 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium drive for recording and / or reproducing a recording medium contained in a cartridge such as an MD (mini disk).
In particular, the present invention relates to a recording medium driving device in which each operation mode can be switched by a single member.

[0002]

2. Description of the Related Art FIG. 10 is a sectional view showing a conventional recording medium drive.

In a recording medium driving device 1 shown in FIG. 10, a cartridge 4 such as an MD (mini-disc) containing a disk is transferred to the inside of the housing 2 through an entrance 3 provided in the front of the housing 2. .

[0004] A drive section 5 is provided at a lower position of the holder 6. The drive unit 5 includes a turntable Ta on the inclined drive base 7 and the turntable Ta.
, And an optical head mechanism (not shown) for reading a disk. A recording head unit 8 is provided on the drive base 7.
Is provided, and a recording head H provided at the tip is provided.
Is attached. The recording head H is supported so as to be able to contact and separate from the disk. The position where the recording head H contacts the disk is the recording position, and the position away from the disk is the retreat position.

A fulcrum 9 is provided at the back of the holder 6, and the open end (cartridge insertion portion) side of the fulcrum 6 is rotatably supported by α1 and α2 shown in the figure. . The state in which the holder 6 is rotated in the illustrated α1 is the standby position, and the state in which the holder 6 is rotated in the illustrated α2 direction is the drive position.

[0006] The holder 6 is provided with a shutter opening / closing mechanism (not shown) for opening and closing a shutter (opening / closing door) Sh provided in the cartridge 4. The shutter opening and closing mechanism pushes and opens the shutter Sh when the cartridge 4 is transferred into the holder 6, and closes the shutter Sh when the cartridge 4 is transferred from the holder 6 toward the entrance 3. Having.

When the holder 6 holding the cartridge 4 is rotated in the α2 direction in the figure, the cartridge 4 in the holder 6 is lowered, and the disk in the cartridge 4 is placed on the turntable Ta. Then, the turntable Ta is rotated by the spindle motor M, whereby a predetermined rotation is given to the disk.

The recording mode is shifted to the recording mode by lowering the recording head H fixed to the tip of the recording head unit 8 to the recording position, or to the reproducing mode by driving the optical head.

[0009]

In the recording medium driving device 1, the transfer for transferring the cartridge 4 inserted in the entrance 3 to the holder 6 and returning the cartridge held in the holder 6 to the entrance. Means are needed.

However, since a shutter opening / closing mechanism is provided on the shutter side of the recording medium driving device 1, a rotation fulcrum of the holder 6 is provided on the back side of the device, and a cartridge of the cartridge is provided on the entrance 3 side. A mechanism for raising and lowering the holder 6 needs to be provided at a position opposite to the shutter since entry and exit are performed, so that a space for installing a transfer unit for transferring a cartridge into a narrow housing is secured. There is a problem that it is difficult to do.

In the above case, the cartridge 4
If the transfer means and the mechanism for raising and lowering the holder 6 are separately provided, there is a problem that the number of parts increases and the configuration becomes complicated.

In some cases, when the mode is switched from the reproduction mode to the recording mode, the transfer means is further moved toward the back of the apparatus. In the cartridge 4 inside the holder 6, the concave portions formed on both sides of the tip of the cartridge are locked by locking means provided inside the holder 6, and the transfer means engages with the locking means. However, when the transfer means is further moved in the direction toward the back of the apparatus, if the state in which the cartridge is locked by the locking means is maintained, it is difficult to set the switching to the next operation mode. Problem.

The present invention has been made to solve the above-mentioned conventional problem, and relates to a recording medium driving device in which switching to each operation mode such as a reproduction mode and a recording mode can be performed by a single member.

Further, the present invention provides a recording medium driving apparatus in which a locking member for locking a cartridge and a moving member for transferring the locking member can be separated so that each operation mode can be switched smoothly. About.

[0015]

SUMMARY OF THE INVENTION According to the present invention, there is provided a housing having an entrance, a holder for guiding a recording medium inserted from the entrance inside the housing in opposition to the entrance, and a holder inserted from the entrance. A transfer unit for drawing the recording medium into the holder and ejecting the recording medium in the holder from the entrance and an entrance unit, and a drive unit for recording and / or reproducing data on the recording medium held in the holder are provided. In the recording medium driving device, the transfer unit includes a locking member that is locked to the recording medium, and a moving member that moves the locking member to move the recording medium in an insertion direction and a discharge direction. The moving member separates from the locking member when moving further in the insertion direction after the recording medium is loaded into the holder, and the moving member moves after the separation. It is characterized in that the switching mechanism is carried out by.

The moving member according to the present invention is a slider that can be moved in the inserting direction and the discharging direction, but may be a rotating arm or the like that rotates around a rotating shaft provided on the housing. The configuration may be such that the locking member is moved by an engagement pin provided at the tip of the rotation arm, and the rotation arm and the locking member are separated at a time when the rotation arm rotates by a certain angle.

In the above-mentioned recording medium driving device, a reproducing mode and / or a recording mode of the recording medium are set by a moving force of the moving member after the locking member is separated.

In the above, the driving unit includes:
It is preferable that a head that performs a recording operation on the recording medium is provided, and the recording mode is set by moving the head in a direction of the recording medium by a moving force of the moving member. , In this case, for example,
The locking member is movably supported by the holder, and when the recording medium is held by the holder, moves the holder in a direction away from the moving member to drive the recording medium in the holder. A posture switching means for loading the unit is provided, and the locking member is set so as to come out of the moving member when the holder moves toward the drive unit.

The holder is moved in the direction of the drive unit while being inclined about a rotation center line extending from one end side in the width direction in the recording medium insertion direction as a fulcrum.

Preferably, the drive unit is provided with a regulating means for regulating the movement of the locking member when the holder moves in the direction of the drive unit.

With this configuration, the locking member separated from the moving member can be stopped at the separated position. Therefore, when the moving member moves in the discharge direction, the moving member and the locking means can be returned to the engaged state again.

Further, a cam gear is provided which meshes with a rack formed on the moving member. The rotating force of the cam gear causes the moving member to move to a position where the recording medium is held by the holder. It is preferable that the moving member is moved in a direction away from the moving member, and the moving member is further moved to the back side in the insertion direction by the rotational force of the cam gear thereafter.

In the above configuration, each operation mode can be set by driving the cam gear which applies a transfer force to the slider for transferring the cartridge between the entrance and the holder. Therefore, since the transfer of the cartridge and the switching of each mode can be set by a single member, the number of parts can be reduced, and the space in the housing can be effectively used.

The holder is provided with two racks, and the cam gear is provided with two gear teeth which are individually meshed with the two racks. The member is moved to a position where the recording medium is held by the holder, and the moving member is further moved deeper in the insertion direction by the engagement of the other rack and the other gear tooth, whereby the two racks and the gear tooth are moved. It is preferable that the holder be moved in a direction away from the moving member by a cam provided on the cam gear when the engagement with the cam gear is interrupted.

Thus, the holder can be set from the horizontal position to the inclined position, and vice versa. As described above, since the cam gear can be provided with various functions, the usage efficiency of the cam gear can be improved.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a recording medium driving apparatus according to the present invention, FIG. 2 is a sectional view taken along the line PP of FIG. 1, and FIG. 1A shows a state where the holder is at a standby position, and FIG. FIG. 3 is a plan view showing details of a closing member, FIG. 4 shows a holder and a locking member, FIG.
Fig. 5 is a side view of A as viewed from the Q direction, C is a cross-sectional view of A taken along the line RR, Fig. 5 shows the operation of the locking member, A is a protruding state, and B is a locking state. Is shown.

A recording medium driving device 10 shown in FIGS. 1 and 2A and 2B performs recording and reproduction of a recording medium of a cartridge storage type in which a disk D is stored in a cartridge K. For example, an MD (mini disk) It is.

As shown in FIGS. 2A and 2B, a driving unit 20 is provided at a lower position of the recording medium driving device 10. A turntable Ta for holding a disk D is provided on a drive base 21 of the drive unit 20.
A spindle motor M for rotating the turntable Ta and a holder stopper 1 for positioning the cartridge K
2g, locate pins 12h, and an optical head mechanism (not shown) for reading the disk D are provided.

A fixed portion 21a is formed at the end of the drive base 21 on the X1 side in the width direction, and the fixed portion 21a is formed.
Are fixed to the housing 11. At a position facing the fixed portion 21a of the drive base 21, a fixed portion 11c formed of a part of the housing 11 is provided. The surface of the fixed portion 21a on the drive base side is shown by Z
A convex portion (fulcrum or rotation center line) 21c protruding in one direction is formed entirely along the insertion and ejection direction (Y1-Y2 direction in the drawing) of the disk D, or is formed partially at intervals. I have. The other end of the drive base 21 is fixed to an end on the X2 side in the housing 11, and FIG.
As shown in A and B, the drive base 21 is fixed inside the housing 11 in a state of being inclined as a whole.

Y of the housing 11 of the recording medium driving device 10 is shown.
On one side, an entrance 11a for inserting and discharging the cartridge K is provided. Inside the housing 11, a holder 12 formed by bending a metal plate by sheet metal processing is provided, and an open end thereof (a cartridge insertion portion).
Is provided so as to be able to face the entrance 11a, through which the cartridge K can be inserted and ejected.

As shown in FIG. 4, the extending portion 1 extends further outside the one side surface (side portion on the X1 side) 12D of the holder 12.
2a is formed integrally. As shown in FIGS. 2A and 2B, the extending portion 12a is inserted between the fixing portion 11c on the housing 11 side and the fixing portion 21a of the drive base 21, and is supported by the convex portion 21c. Further, a slight clearance margin is formed between the fixing portion 11c of the holder 12 and the extending portion 12a of the holder 12.

As shown in FIG. 1 and FIG.
A protrusion 11e is formed on the upper side of the fixing portion 11c of the cartridge K, and the shutter Sh of the cartridge K is
Is provided. The closing member 15 is formed of an elastic member such as a wire,
a. One end is locked in the fixed portion 11 c of the housing 11. The other end of the closing member 15 has a tapered portion 15b bent in a substantially V shape.
1 and the tip thereof is a hook 15b. The engaging portion 15b is provided with a hole 11f formed in the side surface 11A of the housing 11.
Through the small hole 12 d formed in the side surface 12 D of the holder 12.
It has entered the inside of the holder 12. Then, the further end portion (the end portion in the Y1 direction) 15 of the hook portion 15b
c is locked to the edge of the small hole 12d of the holder 12 (see FIG. 3). The closing member 15 is urged in the X2 direction in the figure by the elastic action of the winding portion 15a and the wire.
The holding portion 15b can hold the holding hole Sh1 formed on the side surface of the shutter Sh of the cartridge K.

As described above, since the closing member 15 can be easily formed of a wire, the manufacturing cost can be reduced.

As shown in FIGS. 1 and 4A, a locking portion 12i projecting inward is formed on a side surface 12D (side surface on the X1 side in the figure) of the holder 12, and is transferred in the holder 12. The shutter Sh of the cartridge K can be opened.

As shown in FIG. 4A, a long hole 12c extending in the Y1-Y2 direction is formed on the top surface 12A of the holder 12.
Is formed, and a locking member (locking means) 13 is provided inside the elongated hole 12c. The edge portion of the elongated hole 12c on the X1 side in the figure is bent perpendicularly to the top surface 12A, and this portion serves as a rail portion 12c1. In addition, the other X2 shown in the width direction of the other holder (X2 side).
Side surface 12B is bent in the illustrated X2 direction so as to be flush with the top surface 12A, and this bent portion is the edge of the long hole 12c, and the guide portion 12c2 along the longitudinal direction (Y direction). It has been. And the side surface 12B
Is bent, and a support piece 12b is formed at the center of the portion protruding in the X2 direction in the figure.

The support piece 12b is inserted into a cam groove 33 formed on an inner surface of a cam gear 30 described later (see FIG. 7). By moving the support piece 12b along the cam groove 33 in the Z1-Z2 direction in the drawing, the holder 12 is moved from the standby position shown in FIG.
B is moved up and down with respect to the driving position shown in FIG.

As shown in FIG. 4C, a locking arm 13a and a locking arm 13b are provided on both sides of the locking member 13. And these parts are the long holes 12.
The rails 12c1 and the guides 12c2 of c are respectively hooked, and the locking members 13 are slidable freely in the Y1-Y2 directions inside the elongated holes 12c.

An engaging pin 13c is formed at the center of the locking member 13 and protrudes in the Z1 direction in the figure, and can be inserted into an engaging hole 40b formed in a slider (moving member) 40 described later. ing. The locking member 13 has a Y1
An arm 13d extending in the direction is provided, and a locking claw 13e is formed at the tip of the arm 13d. The arm 13d
On the upper part of the arm, abutment portion 13f projecting from locking member 13 toward arm 13d is formed.

As shown in FIG. 4B, the side surface 1 of the holder 12
A notch 12B1 extending in the longitudinal direction is formed in 2B, and the arm 13d and the locking claw 13e can protrude from the holder 12 in the X2 direction in the drawing from the notch 12B1.

The notch 12B1 has a recess 12B.
2 are formed. When the locking member 13 moves to the most open end side (Y1 side) in the concave portion 12B2,
It is set so that the abutting portion 13f of the locking member 13 can be located. Only when the abutting portion 13f of the locking member 13 is located in the concave portion 12B2 as shown in FIG. 5A, the locking member 13 is allowed to rotate in the δ1 direction in the drawing, and at this time, the notch 12B1 Then arm 13
d and the locking claw 13 e can protrude outside the holder 12. As shown in FIG. 5B, when the abutting portion 13f faces the side surface 12B other than the concave portion 12B2, the abutting portion 13f contacts the side surface 12B, so that the rotation of the locking member 13 is restricted. Can be For this reason, the locking member 1
The third locking claw 13 e enters the inside of the holder 12. Therefore, the locking member 13 inserts and removes a portion other than the concave portion 12B2 in the elongated hole 12c in the inserting and discharging directions (Y in the drawing)
When moving in the (1-Y2 direction), the abutment portion 13f slides along the side surface 12B of the holder 12, so that the locking member 13 is rotated in the illustrated δ2 direction, and the locking claw 13e is constantly moved. The locked state is entered into the holder 12.

A pressing member 17 made of a coil spring or the like is provided on the top surface of the housing 11, and the holder 12 is urged downward (Z2 direction in the figure).

As shown in FIGS. 1 and 2A and 2B, a cam gear 30 rotatably provided is provided on a side surface of the housing 11 on the X2 side. Further, a slider (moving member) 40 which is movable in the Y1-Y2 directions in the figure by the cam gear 30 is provided.

FIG. 6 shows the relationship between the slider and the cam gear when the recording medium driving device of FIG. 1 is viewed from the X2 side in the X1 direction, where A is the standby mode, B is the loading completion mode, and C is the loading mode.
Is an operation diagram showing a reproduction mode, and D shows a recording mode. 7 shows the relationship between the slider and the cam gear when viewed from the X1 side in the X2 direction, where A is the standby mode, B is the loading complete mode, and FIG. 8 is the recording head and slider viewed from the X1 direction in FIG. FIG. 4 is a side view showing the relationship between A and B; FIG.
FIG. 9 shows the relationship between the slider and the locking member when viewed from the X2 side in the X1 direction. A shows a state where the holder is at the standby position, and B shows a state where the holder is at the driving position.

As shown in FIGS. 2A, 2B and 6A, a first pitch having a predetermined pitch is formed on the outer peripheral surface of the cam gear 30.
Gear teeth 31 are provided. X of the cam gear 30
The first gear teeth 31 are provided on the outer end surface (outer surface) on the second side.
The second gear teeth 32a having a smaller diameter than the first gear teeth 32b and the second gear teeth 32b connected to the second gear teeth 32a are formed at a ratio of about a half circumference. An arcuate cam 32c is formed inside the second gear teeth 32a and the first missing tooth portion 32b so as to protrude and extend in the X direction in the figure. Further, near the center of the cam gear 30, third gear teeth 32d
And a second missing tooth portion 32e continuous with the second toothless portion 32e.

As shown in FIGS. 7A and 7B, the cam gear 3
A spiral cam groove 33 is formed on the inner end surface (inner surface) on the X1 side of FIG. 0, and the support piece 12b of the holder 12 is inserted into the cam groove 33. And
The other end (the end on the X2 side) of the holder 12 is supported by the cam groove 33, and can be moved up and down in the Z1-Z2 direction in the figure.

As shown in FIG. 1, a drive motor 50 is provided on the inner side (Y2) of the housing 11.
The rotational driving force of the driving motor 50 is transmitted to the first gear of the cam gear 30 via power transmission means such as a belt or gear.
Transmitted to the gear teeth 31 of the cam gear 3
0 indicates rotation in the normal rotation direction or the reverse rotation direction.

As shown in FIGS. 1 and 2A and 2B, the slider 40 is formed to have a substantially L-shaped cross section by the upper surface 40A and the side surface 40B, and includes the upper portion of the housing 11 on the Z1 side and the housing including the cam gear 30. 11 so as to cover the side surface 11B on the X2 side. An end portion 41a on the X1 side of the upper surface 40A of the slider 40 in the drawing is locked in a sliding groove 11d provided in an upper portion of the housing 11, and is slidable in the Y1-Y2 direction in the drawing. Also, the other end portion 41b on the Z2 side
Is inserted into a groove extending in the Y direction in the figure on the bottom surface 11C of the housing 11, and is movable in the Y1-Y2 direction in the groove.

As shown in FIGS. 6 and 7, the slider 4
A first rack 42 extending in the Y1-Y2 direction is formed on the inner surface of the cam gear 30 so that the first rack 42 can mesh with the second gear 32a of the cam gear 30. As shown in FIGS. 2 and 6A to 6D, a second rack 43 is formed on the side surface 40B of the slider 40 and extends in the illustrated Y1-Y2 directions. The third gear teeth 32d are meshable. The first
The first rack 4 is provided at the edge of the rack 42 on the Y1 side in the drawing.
2 are formed, and a substantially arc-shaped protruding piece 45 driven by the arc cam 32c is formed at a lower position thereof.
Are formed.

As shown in FIGS. 1, 2A, 2B, and 4C, an engagement hole 40b is formed near the center of the upper surface 40A of the slider 40, and the engagement pin 13c of the locking member 13 is formed. Can be inserted. In this embodiment,
The slider 40 and the locking member 13 constitute a recording medium transport unit.

As shown in FIG. 1, on the top surface of the housing 11,
An urging member 16 composed of a torsion coil spring or the like is provided. One end of the urging member 16 is connected to the housing 11.
And the other end is a biasing arm 16a. The urging arm 16a extends into the elongated hole 12c, and can be brought into contact with the locking member 13.

As shown in FIGS. 1, 2A, and B and FIGS. 8A and 8B, the recording medium drive unit 10 can be freely moved on the drive base 21 in the width direction (X1-X2 direction) of the drive unit 20. Pickup 80 is provided. Then, on the pickup 80, the cartridge K
A head unit 70 provided with a recording head (magnetic head) H for recording data on a disk D in the inside is provided.

As shown in FIGS. 8A and 8B, the head unit 70 includes a support member 71 fixed on the pickup 80.
And a head arm 72 movably supported between the inner circumference and the outer circumference of the disk D, and an elevating arm 73 for elevating the head. The recording head H is
The head arm 72 is fixed to the tip. The head arm 72 is rotatably provided at the tip of the support member 71, and is capable of moving up and down in a direction approaching and away from the disk D. The lifting arm 73 is also rotatably provided on the support member 71, and a support projection 73a for supporting the head arm 72 from below to above is protruded from one end. The other end of the elevating arm 73 is provided with a pressurized portion 73b formed in a crank shape.

On the back side of the drive base 21, a pressing means 74 for pressing the pressed portion 73b of the elevating arm 73 is provided.
It is provided rotatable in the 1 and γ2 directions. At the tip of the pressing unit 74, a pressing unit 74a extending in the width direction (X1-X2 direction) of the recording medium driving device 10 is formed. The pressing means 74 is provided with an urging member such as a coil spring.
Are urged in the illustrated γ1 direction in which the pressed portion 73b of the lifting arm 73 can be pressed. Accordingly, the head unit 70 is moved by the movement of the pickup 80 in the width direction.
Even if is moved in the width direction, the pressurizing portion 74a of the pressurizing means 74 always faces the pressurized portion 73b of the elevating arm 73, and is set so as to pressurize it.

The pressurizing section 74a of the pressurizing means 74
When the pressed portion 73b is pressurized, the elevating arm 73 is rotated counterclockwise in the drawing. As a result, the head arm 72 is lifted by the support projection 73a of the lifting arm 73, so that the recording head H provided at the tip of the head arm 72 is separated from the disk D. When the pressurization by the pressurizing means 74 is released, the head arm 72 and the elevating arm 73 can be lowered by their own weight in the direction in which they come into contact with the disk D.
That is, the housing 11 is provided with elevating means for elevating the recording head H with respect to the disk D.

As shown in FIGS. 8A and 8B, the slider 4
0 is provided with a riser 46. The Y2 side of the kick-up portion 46a is a pressing portion 46b that pushes out the cartridge K in the discharging direction at the time of discharging. And FIG.
As shown in B, the slider 40 is moved in the depth direction of the apparatus, and the lifter 46 presses the pressing member 74 to rotate in the γ2 direction, thereby lowering the lifting arm 73 and the head arm 72. The recording head H is allowed to approach the disk D (recording position).

As shown in FIGS. 4A to 4D and FIGS. 8A and 8B, the inside of the housing 11 of the recording medium drive 10 is
Leaf switch S facing side surface 40B of slider 40
W1, SW2 and SW3 are provided so that the position of the slider 40 in the insertion and ejection directions can be detected. Inside the housing 11, signals of the leaf switches SW1, SW2 and SW3 and other operation switches (for example, a recording (REC) switch,
A control unit CN is provided (not shown) that obtains signal information from an eject switch, etc., and controls the start and stop of the spindle motor M and the drive motor 50.

The pickup 80 is provided with an optical head slidable in the radial direction of the disk D (the width direction in FIG. 8). In the optical head, light energy from the optical head is radiated perpendicularly to the disk D, so that the disk D can be read. Further, by applying magnetism from the recording head H together with the irradiation of the optical head, it is possible to write data on the disk D by performing magnetic field modulation or magnetic modulation. In the recording medium drive 10, since the drive base 21 is inclined, in the optical head, the optical axis of light energy is inclined in the vertical direction (Y1-Y2 direction) of the housing 11. is set up.

The operation of the above-described recording medium driving device will be described. (Initial Mode) First, in the initial mode before the cartridge K is inserted into the recording medium driving device 10, the slider 40 is set to the entrance 11a side (Y1 side in the figure) (see FIG. 1). 7A, the support piece 12b of the holder 12 is inserted into the outer peripheral side of the cam groove 33 of the cam gear 30. Therefore, the holder 12 is shown in FIG.
Is set at the standby position shown in FIG.
2 is set in a state where the opening end faces the entrance 11a of the housing 11.

In the initial mode, the slider 40
The locking member 13 provided in the elongated hole 12c of the holder 12 is moved in the opening end direction (Y1 direction in the drawing) in accordance with the position of. Therefore, the abutting portion 13f of the locking member 13 is located in the concave portion 12B2 of the side surface 12B of the holder 12, so that
The locking member 13 is rotatable in the δ1 and δ2 directions (see FIGS. 4B and 5A).

As shown in FIG. 8A, the recording head H has been moved to a retracted position away from the turntable Ta.

In this state, the entrance 11 of the housing 11
When the cartridge K is inserted into the holder 12 through a, the locking claw 13e of the locking member 13 is pressed toward the back of the apparatus by the arc-shaped tip corner on the insertion side of the cartridge K. As a result, the locking member 13 is rotated in the δ1 direction by the tip corner of the cartridge K.
The 3d and the locking claw 13e are pushed out of the holder 12 (see FIG. 5A). When the cartridge K is further inserted, the locking member 13 itself is moved toward the inner part of the apparatus (Y1 direction in the drawing) by the tip of the cartridge K. At this time, as shown in FIG. 5A, the leading end of the cartridge K abuts on the corner of the locking member 13, so that the locking member 13
In the direction. Thereby, the locking claw 13e of the arm 13d of the locking member 13 enters the concave portion K1 provided on the side of the cartridge K, and locks the concave portion K1 (see FIG. 5B). When the cartridge K is further pushed in, the abutting portion 13f of the locking member 13 is
The holder 12 is moved from the position B2 to a position facing the side surface 12B of the holder 12, and the rotation of the locking member 13 in the δ1 direction is restricted. That is, the side surface 12B of the holder 12 has a function as a regulating member that regulates the rotation of the locking member 13.

Then, the locking member 13 is
When moving in the Y2 direction, the arm portion 13d of the locking member 13 is
Side side). For this reason,
It is possible to maintain the state in which the cartridge K is securely held without rotating in the direction (δ1 direction) in which the locking claws 13e protrude.

When the locking member 13 holding the cartridge K is pushed in the Y2 direction in the figure, the locking member 1
Since the third engagement pin 13c is engaged with the engagement hole 40b of the slider 40, the slider 40 is moved in the insertion direction together with the locking member 13.

(Loading Mode) When the slider 40 is Y
The leaf switch SW shown in FIG. 6 is moved in two directions.
When the side surface 40B of the slider 40 deviates from 1 in the Y2 direction in the drawing, a detection signal of the leaf switch SW1 is notified to the control unit CN. The control unit CN is provided with a drive motor 50.
Is started, and the cam gear 30 is rotated counterclockwise. Thereby, the second gear 32a of the cam gear 30
Is moved in the insertion direction (loading starts). Therefore, the locking member 13 engaged with the slider 40 is also moved in the insertion direction, so that the cartridge K locked by the locking member 13 is automatically drawn into the housing 11. Can be.

During the pulling-in operation, the shutter S of the cartridge K is moved by the locking portion 12i formed on the side surface 12D (side surface on the X1 side in the figure) of the holder 12.
h is opened.

As shown in FIGS. 6A and 6B, when the cam gear 30 is rotated substantially half a turn, the cartridge K is transferred to the loading completion position in the holder 12, and the first rack 42 of the slider 40 is moved to the cam gear 30. It comes off from the second gear teeth 32a. Then, the first missing tooth portion 32b comes into contact with the braking piece 44 adjacent to the first rack 42. When the cam gear 30 is further rotated counterclockwise, the braking piece 44 slidably contacts the first missing tooth portion 32b, so that a small transfer force F1 acts on the slider 40 in the Y2 direction in the figure. The upper surface 40A of the slider 40
The slider 40 abuts on the urging arm 16a of the urging member 16 and is urged in the Y1 direction in the drawing between the housing and the top surface of the housing 11. Therefore, the urging arm 16 is attached to the slider 40.
The urging force F2 in the direction Y1 shown in FIG. That is, the transfer force F1 and the urging force F2 act on the slider 40 at the same time, and when these forces are balanced, the slider 40 after loading is stopped in the state shown in FIG. 4B.

It should be noted that the reproduction mode shown in FIG.
The slider 40 is also urged by the urging member 16 in the Y1 direction in FIG. Therefore, the braking piece 44 is moved to the first toothless portion 32b.
Around the first rack 4 of the slider 40
When the second gear meshes with the second gear teeth 32a of the cam gear 30, meshing can be smoothly performed.

On the other hand, as shown in FIGS. 7A and 7B, when the cam gear 30 is rotated substantially half a turn, the support piece 12 b of the holder 12 slides in the cam groove 33. That is, the support piece 1
2b is relatively moved toward the center of the spiral along the Z2 direction.

As shown in FIGS. 2A and 2B, the X
The extension 12a on one side is inserted into a gap between the lower surface of the fixing portion 11c of the housing 11 and the protrusion 21c of the fixing portion 21a of the drive base 21, and in this state, the extension 12a
A slight gap margin is formed between the fixing portion 11c and the fixing portion 11c. Therefore, when the support piece 12b is moved in the Z2 direction in the figure by the cam groove 33, the extending portion becomes
It is rotated like a seesaw between the clearances around the contact point between the extension 1c and the extension 12a. As a result, the holder 12 set in the horizontal posture at the standby position in FIG. 2A is rotated in the illustrated β2 direction about the convex portion 21c as a fulcrum.
In the drive position shown in B, the vehicle is set to an inclined posture along the drive base 21. When the cam gear 30 is rotated in the reverse direction, the support piece 12b of the drive base 21 moves from the center of the cam groove to the outer peripheral side, that is, from below (Z2 side) to above (Z1
2A) can be set from the inclined posture shown in FIG. 2B to the horizontal posture shown in FIG. 2A. In this sense, the cam gear 30 functions as a posture switching unit that switches the holder 12 from the horizontal posture to the inclined posture or vice versa. The protrusion 21
The contact point between c and the extension portion 12a extends in the insertion direction,
The rotation center line of the holder 12 is formed.

As described above, since the holder 12 can be moved up and down by the cam gear for switching the mode by employing the structure in which the side on which the shutter Sh is provided is pivoted about the fulcrum, the cartridge K
There is no need to provide a dedicated member for raising and lowering the device. Therefore, the manufacturing cost can be reduced and the housing 1
1 can be effectively used.

When the holder 12 is moved to the driving position, as shown in FIG.
3c comes out of the engagement hole 40b of the slider 40. For this reason, the slider 40 can be moved in the insertion direction without being restricted by the locking member 13.

Note that, as shown in FIGS. 2A and 2B,
A stopper (regulating means) 18 is provided on the inner surface of the side surface 11B. As shown in FIGS. 4A and 9A and 9B, when the holder 12 is moved down from the standby position in FIG. 9A to the driving position in FIG. 9B, the arm 1 of the locking member 13 is moved.
3 is set to be in a state where it can face and contact the stopper 18. In this state, the locking member 13 is moved most in the insertion direction (Y2 direction).
Is set so that the side surface on the Y2 side faces the edge portion 12c3 of the long hole 12c. That is, since the locking member 13 is held between the stopper 18 and the end 12c3 of the elongated hole 12c, it is possible to prevent the displacement in the insertion (Y2) -discharge (Y1) direction.

Since the holder 12 is constantly urged downward by the pressing member 17 provided on the top surface of the housing 11, the holder 12 is held inside the holder 12 after moving to the driving position. The bottom of the cartridge K is the drive base 2
1 is pressed against the upper holder stopper 12g. At the same time, locate pin 12h provided on drive base 21
Accordingly, the cartridge K is positioned at a predetermined position on the drive base 21. Further, the disk D in the cartridge K is mounted on the turntable Ta of the drive unit 20.

(Regeneration Mode) As shown in FIG. 6C, when the cam gear 30 is further rotated by the drive motor 50, an arc cam 32c formed on the outer surface of the cam gear 30 is formed.
Presses the protruding piece 45 formed on the side surface 40B of the slider 40 in the counterclockwise direction, so that the slider 40 in the stopped state is slightly moved in the insertion direction (Y2 direction in the drawing). As a result, the leaf switch SW2 is switched to the ON state by the end of the side surface 40B of the slider 40 on the Y2 side in the drawing. When the control unit CN detects the ON signal of the leaf switch SW2, the drive motor 5
0 is stopped and the spindle motor M is started to give a predetermined rotation to the disk D on the turntable Ta. Next, the control unit CN operates the optical head mechanism on the pickup 80 to read data recorded on the disk D.

(Recording Mode) Next, the recording medium drive 1
When a REC switch (not shown) provided outside the control unit CN is operated, the control unit CN stops the rotation of the spindle motor M and starts the drive motor 50,
The cam gear 30 is further rotated counterclockwise. As shown in FIG. 6D, this rotation causes the third gear teeth 32 d formed on the cam gear 30 to move to the side surfaces 40 of the slider 40.
In order to engage with the second rack 43 of B, the slider 40 is further moved in the insertion direction (Y2 direction in the drawing). Then, the leaf switch SW3 is switched to the ON state by the end of the side surface 40B of the slider 40 on the Y2 side in the drawing.

At the same time, as shown in FIGS. 8A and 8B, the kick-up portion 46 provided on the slider 40 comes into contact with the pressing member 74 of the head unit 70, and rotates this pressing member 74 in the γ2 direction in the figure. . Thereby, the lifting arm 73
However, the head arm 72 supported by the elevating arm can be lowered by its own weight. Accordingly, as shown in FIG. 8B, the recording head H fixed to the tip of the head arm 72 enters the opening K2 for exposing the disk of the cartridge K, and moves to the recording position in contact with the disk D. (See FIG. 8). In the recording mode shown in FIG. 8B, the elevating arm 73 is
It is evacuated to a position away from.

In the above description, since the holder 12 is rotated in the directions of β1 and β2 with the side of the cartridge K where the shutter Sh is provided as a fulcrum, the opening K2 of the cartridge K and the fulcrum of the rotation (convex portion). 21c) (rotation radius) can be reduced. Therefore, the amount of movement of the disk D in the opening K2 during rotation can be reduced as compared with the conventional case. Therefore, the amount of movement of the head arm 72 that moves between the retracted position (FIG. 8A) and the recording position (FIG. 8B) can be reduced.

The control unit CN operates the leaf switch SW
When it is detected that 3 has been switched to the ON state, the drive motor 50 is stopped, and at the same time, the spindle motor M is started. Therefore, the disc D can record data such as music via the recording head H.

(Transition from Recording Mode) In the recording mode, when a reproduction switch (not shown) provided outside the recording medium driving device 10 is pressed, the control unit CN
Drives the drive motor 50 in the reverse direction to rotate the cam gear 30 counterclockwise. Thereby, it is possible to shift from the recording mode to the reproduction mode. Similarly, when an eject switch (not shown) is selected, when the recording medium driving device 10 is in the recording mode, the recording medium driving device 10 can be shifted to the initial mode via the reproduction mode and the loading mode. In the case of the mode, the mode can be shifted to the initial mode via the loading mode. The transition to these operations can be performed by a procedure reverse to the procedure for transitioning to each of the above operations.

When shifting from the loading mode to the initial mode, the slider 40 is moved by the cam gear 30 as shown in FIG.
It is moved from the position shown in FIG. 6B to the position shown in FIG. 6A.
At this time, as shown by the dotted line in FIG. 8A, the pressing portion 46b provided on the slider 40 presses the leading end on the insertion side of the cartridge K in the Y2 direction in the drawing, so that the cartridge K is transferred in the discharging direction. When the control unit detects from the signal from the leaf switch SW1 that the slider 40 moved in the Y1 direction has reached the initial mode, the control unit stops the drive motor 50. Thereby, the cartridge K is
The cartridge K is set in a state where the front end protrudes from the entrance 11a in the Y1 direction. Therefore, the cartridge K can be taken out by grasping the cartridge K and pulling it out in the discharge direction (Y1 direction).

In the initial mode, the abutting portion 13f of the locking member 13 is located in the concave portion 12B2 of the side surface 12B of the holder 12. Therefore, when the cartridge K is pulled out from this state, the concave portion K1 of the cartridge K pushes the tapered portion 13g adjacent to the locking claw 13e in the Y1 direction in the drawing (see FIG. 5). For this reason, since a rotational force in the δ1 direction is generated in the locking member 13, the locking claw 13e can come out of the concave portion K1. Therefore, since the locking of the cartridge K by the locking claw 13e can be easily released, the cartridge K can be taken out with a small force.

Further, as shown in FIG.
Is transported in the discharge direction, the engaging portion 15b of the closing member 15 is elastically deformed and the cartridge K
Slides on the X1 side surface. Then, the engaging portion 15b of the closing member 15 enters the holding hole Sh1 on the side surface of the shutter Sh and urges and holds the shutter Sh in the X2 direction in the figure. Therefore, when the cartridge K is further transferred in the discharge direction (Y1 direction), the cartridge
Is closed by a shutter Sh that is relatively moved in the Y2 direction.

When the cartridge K is further pulled out, the tapered portion 15b1 of the closing member 15 is moved to the shutter S.
The stopper 15b hits the edge of the holding hole Sh1 of h, and is raised in the X1 direction in the figure. Thereby, the closing member 15
Are elastically deformed in the X1 direction in the figure, and the engaging portion 15b of the closing member 15 comes out of the holding hole Sh1. Therefore, the cartridge K with the shutter Sh closed can be taken out.

It should be noted that the present invention is not limited to an MD (mini-disc), but may be an FD (floppy disk), MO (magnet optical), or another cartridge-storing disk.

[0086]

According to the present invention described in detail above, each operation mode of the recording medium driving device can be set by a single member. Therefore, the space in the housing can be effectively used.

[Brief description of the drawings]

FIG. 1 is a plan view showing a recording medium driving device according to the present invention;

FIG. 2 is a sectional view taken along line PP of FIG.
Is a state where the holder is at the standby position, B is a state where the holder is at the driving position,

FIG. 3 is a plan view showing details of a closing member;

FIG. 4 shows a holder and a locking member, where A is a plan view and B is A
C is a cross-sectional view taken along the line R-R of A,

FIG. 5 shows the operation of the locking member, where A is a protruding state, B is a locking state,

6 shows the relationship between the slider and the cam gear when the recording medium driving device of FIG. 1 is viewed from the X2 side in the X1 direction, where A is a standby mode, B is a loading completion mode, C is a reproduction mode,
D is an operation diagram showing a recording mode,

FIG. 7 shows the relationship between the slider and the cam gear from X1 side to X2 side.
A shows a state viewed in the direction, A is a standby mode, B is a loading completion mode,

8 is a side view showing the relationship between the recording head and the slider viewed from the X1 direction in FIG. 1, where A is a state moved to a retracted position, B is a state moved to a recording position,

FIG. 9 shows the relationship between the slider and the locking member when viewed in the X1 direction from the X2 side, where A is a state where the holder is at the standby position, B is a state where the holder is at the driving position,

FIG. 10 is a cross-sectional view showing a conventional recording medium driving device.

[Explanation of symbols]

 Reference Signs List 10 recording medium drive 11 housing 12 holder 12a extension 12b support piece 12c long hole 13 locking member 13a, 13b locking arm 13c engagement pin 13d arm 13e locking claw 13f abutment 15 closing member 15b Hook part 18 Stopper (restriction means) 20 Drive unit 21 Drive base 21c Convex part 30 Cam gear 31 First gear tooth 32a Second gear tooth 32b First missing tooth part 32c Arc cam 32d Third gear tooth 32e 2 missing tooth portion 40 slider (moving member) 40b engagement hole 42 first rack 43 second rack 44 brake piece 50 drive motor 70 head unit 72 head arm 73 elevating arm K cartridge K1 concave portion K2 disk opening Sh shutter Sh1 holding hole H recording head

Claims (8)

[Claims] 1. A housing having an entrance, a holder for guiding a recording medium inserted from the entrance opposite the entrance in the housing, and a recording medium inserted from the entrance into the holder. A recording medium driving device provided with a transfer unit that draws in and discharges a recording medium in a holder from the entrance and a drive unit that records and / or reproduces data on the recording medium held by the holder; The means has a locking member that is locked to the recording medium, and a moving member that moves the locking member to move the recording medium in the insertion direction and the ejection direction. When the recording medium is further loaded in the apparatus and moves further in the insertion direction, it separates from the locking member, and the mechanism is switched by the operation of the moving member after the separation. Recording medium drive, characterized in that it is. 2. The recording medium driving device according to claim 1, wherein a reproducing mode and / or a recording mode of the recording medium is set by a moving force of the moving member after the locking member is separated. 3. A head for performing a recording operation on the recording medium is provided in the driving unit, and the recording is performed by moving the head in a direction of the recording medium by a moving force of the moving member. 3. The recording medium drive according to claim 1, wherein a mode is set. 4. The holding member is movably supported by the holder, and when the recording medium is held by the holder, moves the holder in a direction away from the moving member to move the holder inside the holder. 4. The apparatus according to claim 1, further comprising a posture switching unit configured to load a recording medium into the drive unit, wherein the locking member comes out of the moving member when the holder moves toward the drive unit. 5. Recording medium drive. 5. The recording medium driving device according to claim 4, wherein the holder moves in the direction of the driving unit while being inclined about a rotation center line extending from one end side in the width direction in a recording medium insertion direction as a fulcrum. 6. The recording medium according to claim 4, wherein said drive unit is provided with regulating means for regulating movement of said locking member when said holder moves toward said drive unit. Drive. 7. A cam gear meshing with a rack formed on the moving member is provided. The rotating force of the cam gear causes the moving member to move to a position where a recording medium is held by a holder, and the holder further moves the holder. 7. The recording medium drive according to claim 4, wherein the moving member is moved in a direction away from the moving member, and the moving member is further moved deeper in the insertion direction by a rotational force of the cam gear thereafter. 8. The holder is provided with two racks, and the cam gear is provided with two gear teeth individually meshing with the two racks. The member is moved to a position where the recording medium is held by the holder, and the moving member is further moved deeper in the insertion direction by the engagement of the other rack and the other gear tooth, whereby the two racks and the gear tooth are moved. 8. The recording medium driving device according to claim 7, wherein the holder is moved in a direction away from the moving member by a cam provided on the cam gear when the engagement with the cam gear is interrupted.