JP3417643B2 - Drive for recording medium - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium driving apparatus in which a recording medium such as a disc contained in a cartridge or a disc not contained in a cartridge is loaded and driven, and particularly to drive the recording medium. The present invention relates to a recording medium drive device in which a drive unit is elastically supported by a support portion by a damper or a spring.

[0002]

2. Description of the Related Art FIG. 12 is a side view showing the internal structure of a recording medium driving device (disc device) in which a plurality of discs D housed in a cartridge C as recording media are loaded. In this type of disk device, the disk storage unit 100
Each of the cartridges C is inserted into each of the multi-stage standby units and is on standby. In the drive unit 101, a clamp table 102 for clamping the central portion of the disk D in the cartridge C, a spindle motor 103 for driving the clamp table 102, and reproduction or recording / reproduction of data recorded on the disk D. The head 104 for use is mounted.

The drive unit 101 is held in a support frame 105, the drive unit 101 moves in the vertical direction in the figure together with the support frame 105, and the drive unit 101 stands by in the disk storage section 100. It faces the cartridge C. Then, the disk storage unit 100
The cartridge C selected from among the drive units 101
The disk D in the cartridge C is guided to the inside, is clamped on the clamp table 102, and is rotationally driven. Then, reproduction or recording / reproduction is performed by the head 104. When the recording medium is a disk D or the like, it is necessary to prevent the drive unit 101 from being elastically supported in the support frame 105 by an elastic body 106 such as a damper or a spring so that the head 104 is not directly affected by external vibration. . Particularly in the case of a vehicle-mounted disk device, elastically supporting the drive unit 101 is an essential condition.

[0004]

The drive unit 10 described above is to be solved.
1, the clamp table 1 is provided in the center of the disk D in the cartridge C introduced into the unit 101.
It is necessary to provide a mechanism for holding / releasing the clamp table 102 so that the clamp table 102 is taken out from the inside of the cartridge C when the cartridge 02 is inserted and the cartridge C is returned to the inside of the disk storage unit 100. Further, it is necessary to provide an ejector for ejecting the cartridge C introduced into the drive unit 101 back into the disc storage portion 100 and a drive mechanism for the ejector. The mechanism for holding and releasing the holding, the ejector and its driving mechanism are the driving unit 1
01 must be installed to operate. Providing these mechanisms and their power sources in the drive unit 101 is one conceivable means. However, in this case, the internal structure of the drive unit 101 becomes complicated, and the size and weight of the drive unit 101 are increased. Will lead to an increase.
Therefore, it is conceivable to provide a power source on the support frame 105 side and transmit the power from the power source to the mechanism in the drive unit 101 to operate each of the mechanisms in the drive unit 101. However, the support frame 105 side and the drive unit 1
If the inside of 01 is connected by the power transmission means, the drive unit 101 is constrained to the support frame 105, and the elastic body 106 cannot elastically support the drive unit 101.

The present invention has been made to solve the above-mentioned conventional problems. When the recording medium is driven, the drive unit can be elastically supported, and the holding / holding release mechanism in the drive unit and the drive mechanism of the ejector can be supported by the supporting portion. It is an object of the present invention to provide a drive device for a recording medium that can be operated by a power source provided on the side.

[0006]

According to the present invention, in a drive device for a recording medium in which a drive unit for driving the recording medium is elastically supported by a supporting portion, the supporting portion includes a power source, A rotating body that is driven to rotate by a power source is provided, and the driving unit includes a driven member for holding operation, a driven member for discharging operation, and a driven member for holding operation.
A movable portion is moved in between the position to open position and a recording medium that holds the recording medium introduced into the drive unit I by the moving force of the moving member, the for the discharge operation
Recording in the drive unit by the moving force of the drive member
The standby position that allows the medium to move and the drive unit that drives the recording medium
To be ejected to the outside.
Ekuta and is provided, wherein the rotary body Oyo first cam portion
And a second cam portion are provided for driving the holding operation.
The member follower that slides the first cam portion, the exhaust
For the driven member for the ejecting operation, a slide for the second cam portion is used.
A lower is provided for the first cam portion and the second cam portion.
Is a driving restraint that gives driving force to each follower
And the drive restraint is continuously formed on the follower
An open part for releasing the restraint is formed, and rotation of the rotating body is performed.
Each driven member is driven by the force and the movable parts are marked.
Move to the position to hold the recording medium and move the ejector
When you move to the standby position, each follower
It is characterized in that each cam portion moves to the opening portion .

[0007]

In the above means , the drive unit may move in the housing together with the supporting portion, and the drive unit may face any one of the plurality of recording media waiting in the housing.

[0009]

In the above means, the drive unit for driving the recording medium is elastically supported by the support portion by the elastic body such as a damper or a spring. A power source such as a motor and a solenoid and a driving member driven by the power source are provided on the support portion, and a driven member is provided on the driving unit side. The driving member and the driven member are engaged with each other by the cam portion and the follower, and the power from the power source provided in the support portion is transmitted to the driven member on the driving unit side by the cam portion and the follower. . Then, a movable part provided on the drive unit side for holding and releasing the recording medium and an ejector for ejecting the recording medium to the outside of the unit are driven.

However, when the movable portion holds the recording medium or the ejector moves to the standby position, that is, when the reproducing operation or the recording / reproducing operation is performed on the recording medium, the follower is opened by the opening portion of the cam. Is released from restraint. Therefore, during the reproducing or recording / reproducing operation, the driving member and the driven member are disengaged from each other, and the driving unit is elastically supported by the supporting portion. Therefore, external vibration such as vehicle vibration does not adversely affect the drive unit.

When the drive unit moves in the housing together with the support, and the drive unit faces any one of a plurality of recording media waiting in the housing, the power is applied to the moving support. By providing the power source and the driving member, it is possible to operate each mechanism in the driving unit regardless of the position of the supporting unit, and the reproducing / recording / reproducing operation of the recording medium is performed in the driving unit. The drive unit can be elastically supported with respect to the support portion during the operation.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mechanical portion of an in-vehicle disk drive device as an example of a recording medium driving device according to the present invention, and FIGS. 2 and 3 are exploded perspective views showing a part of the mechanical portion, FIGS. 7 is a plan view for each operation, FIGS. 8 and 9 are side cross-sectional views for each operation, FIG. 10 is a partial cross-sectional view taken along line XX in FIG. 4, and FIG. 11 is a partial cross-section taken along line XI-XI in FIG. It is a figure. As shown in FIG. 1, the inside of the housing 1 is a disc housing portion A and a playing portion moving area B. Figure 8
As shown in, the nose portion 2 is attached to the front of the housing 1. The nose portion 2 has an insertion opening 2a which communicates with the disc storage portion A. A cover 2b is provided on the front surface of the nose portion 2 and can rotate forward with the lower end as a fulcrum. As shown by the solid line in FIG. 8, when the cover 2b rotates forward, the insertion port 2a is exposed, and when the cover 2b rotates to the state shown by the chain line, the insertion port 2a is closed. The housing 1 is embedded in a 1-din (DIN) size storage portion of a front panel in the interior of an automobile, and a nose portion 2 appears on the front panel surface.

The disc D as a recording medium used in this embodiment is a so-called mini disc or the like, and is inserted into the disc storage portion A from the insertion slot 2a by hand while being stored in the cartridge C. In the disk storage portion A, a pair of holding frames 3 and 3 fixed to the housing 1 are provided so as to face each other, and holding ribs 3a, 3a, ... Are holding ribs 3
4 stages of disk standby portions E1, which are divided by a and 3a
E2, E3 and E4 are formed. As shown by the solid line in FIG. 8, the cartridge C is inserted into each of the disk standby portions E1, E2, E3, E4 with the cover 2b opened forward.

A playing section F is provided in the playing section moving area B. The playing portion F has a lower support frame 5 and an upper support frame 6 as shown in FIG. Both supporting frames 5 and 6 are fixed to each other by fixing screws 7, 7, ... to form a box-shaped frame, and a combination of the lower supporting frame 5 and the upper supporting frame 6 forms a supporting portion. Has become. A frame-shaped support portion in which both support frames 5 and 6 are combined can be selectively moved up and down in the housing 1. That is,
.. are fixed to both side surfaces of the lower support frame 5, and the support shafts 8, 8, .. Holes 1a, 1a, ...
Has been inserted inside. Drive levers 10, 10 are provided outside the both side surfaces of the housing 1. In FIG. 1, only one drive lever 10 is shown. The drive lever 10 is formed with sliding holes 10c, 10c extending in the horizontal direction.
The guide shafts 11, 11 fixed to the side surface of the
0c, 10c are inserted, the drive lever 10 is (a)-
It is slidably supported in the (b) direction. A motor (not shown) is provided at the bottom of the housing 1, and the power of the motor is transmitted to the pinion gear 14 via the reduction gears 12 and 13. A rack 10b is formed at the lower edge of the drive lever 10 and meshes with the pinion gear 14. The drive lever 10 is driven in the (a)-(b) direction by the decelerating rotation of the pinion gear 14 by the power of the motor.

The drive lever 10 is provided with a pair of drive holes 10a, 10a of the first set in an inclined manner.
The support shafts 8 and 8 are inserted into 0a and 10a.
As a result, due to the moving force of the drive lever 10 in the (a)-(b) directions, the support portion constituted by the performance portion F, that is, the support frames 5 and 6, and the mechanism housed therein (drive unit H). ) Move up and down together in the housing 1. Figure 1
In, the drive lever 10 is moved to the end in the (a) direction, and the playing portion F is located at the top. When the drive lever 10 moves in the (b) direction from the state of FIG. 1, the playing portion F descends. 2 shows the lower support frame 5 and the upper support frame 6 of the playing portion F, the drive unit H shown in FIG. 3 is supported in the support portion composed of the both support frames 5 and 6.
The drive unit H includes an upper chassis 21 and a lower chassis 2.
2 and. As shown in FIG. 3, the upper chassis 2
Bottom guide plates 21a, 21a and side guide plates 21b, 21b are attached to both sides of the lower surface of the No. 1 and guide pieces 21c, 21c are formed at the ends of the upper chassis 21. On the lower surface of the upper chassis 21, the upper chassis 21
And side guide plates 21b, 21b and bottom guide plates 21a,
21a, which is surrounded by 21a and guides both sides of the cartridge C into the drive unit H and holds them.
1d is formed.

Support shafts 23, 23 are provided on both sides of the right end of the upper chassis 21 in the figure, and support holes 22a, 22a formed in the right end of the lower chassis 22 in the figure rotate about the support shafts 23, 23. It is supported freely. In this embodiment, the lower chassis 22 is movable by pivoting in the (H)-(L) direction between the holding position shown in FIG. 8 and the open position shown in FIG. 9 with the support shafts 23, 23 as fulcrums. It is a division. Both sides of the upper chassis 21 are supported by elastic bodies 24 such as air dampers or oil dampers. Alternatively, the elastic body 24 is formed of a coil spring or a combination of a damper and a coil spring. The elastic body 24 is fixed to the inner side (portion indicated by * 1) of both side surfaces of the lower support frame 5 shown in FIG. That is, the drive unit H is elastically supported in a movable state by the elastic body 24 inside the lower support frame 5 and the upper support frame 6 that move up and down in the housing 1. A lock mechanism (not shown) is provided in the lower support frame 5 and the upper support frame 6 to lock the upper chassis 21 only when the upper and lower chassis 21 and 22 are in an open state (state in FIG. 9). Has been.
This lock mechanism is provided so that the cartridge C can be easily inserted into the drive unit H in the open state shown in FIG.

A clamp table 25 for magnetically adsorbing and clamping the central portion of the disk D in the cartridge C is provided almost at the center of the lower chassis 22. As shown in FIG. A spindle motor Ms that rotationally drives the clamp table 25 is fixed. A reproducing or recording / reproducing head 26 is supported on the lower chassis 22. As shown in FIG. 3, a drive slider 31 that serves as a first driven member is provided on the upper surface of the upper chassis 21. Sliding holes 31a, 31a, ... Are formed in the drive slider 31,
The sliding holes 31a, 31a, ... Are inserted into the guide shafts 32, 32 ,.
The drive slider 31 is (d) relative to the upper chassis 21.
It is supported so that it can slide in the (-) direction.

A crank hole 31c is formed in the bent piece 31b of the drive slider 31, and the crank hole 31c is formed.
A shaft 33 fixed to the lower chassis 22 is inserted therein. When the drive slider 31 moves in the (d) direction,
The shaft 33 is guided to the upper end (to) of the crank hole 31c, and the lower chassis 22 uses the support shaft 23 as a fulcrum.
By rotating in the (h) direction, the cartridge C guided into the holding guide passages 21d and 21d can be held as shown in FIG. When the drive slider 31 moves in the (e) direction, the shaft 33 is guided to the lower end (g) of the crank hole 31c, the lower chassis 22 rotates in the (i) direction, and as shown in FIG. , Holding guide passages 21d, 21d
The cartridge C guided inside is ready to be opened. A pin 37 is fixed to a side portion of the upper chassis 21,
A hook piece 31d is integrally formed on a side portion of the drive slider 31, and a tension spring 34 is hung between the pin 37 and the hook piece 31d as a biasing member or a spring member. The pulling force of the spring 34 urges the drive slider 31 in the (d) direction. Since the drive slider 31 is pulled in the (d) direction and is urged, the lower chassis 22 is pushed by the crank hole 31c.
Is biased in the (h) direction so that it can be stabilized in a state of holding the cartridge C as shown in FIG.

However, the lower chassis 22 is equipped with a clamp table 25, a spindle motor Ms, a head 26, etc., and is somewhat heavy. Therefore, in order to pull up the shaft 33 provided on the lower chassis 22 by the crank hole 31c and stabilize the lower chassis 22 in the posture shown in FIG. 8, the pulling force of the spring 34 must be considerably strong. However,
If the tensile force of the spring 34 is made too strong, the drive slider 31 is driven in the (e) direction, and the lower chassis 2
When trying to rotate 2 in the (i) direction, the load on the driving force becomes excessive.

Therefore, in the embodiment shown in FIG. 3, an auxiliary spring member 35 by a torsion spring is attached to the support shaft 23 fixed to the upper chassis 21. One arm 35a of the auxiliary spring member 35 is hooked on the lower surface of the upper chassis 21, and the other arm 35b can exert an elastic force in the (h) direction. The arm 35b is hooked in the hooking hole 22b of the lower chassis 22, whereby the auxiliary spring member 35 biases the lower chassis 22 in the (h) direction. The auxiliary spring member may be a tension coil spring or the like that connects the lower chassis 22 and the upper chassis 21. The auxiliary spring member 35 urges the lower chassis 22 in the (h) direction to urge the drive slider 31.
Even if the pulling force of 4 is not excessive, the lower chassis 22
Is urged to rotate in the (h) direction by a sufficient elastic force, and can be stabilized in the posture shown in FIG. Since the tensile force of the tension spring 34 is not excessive, the driving force for driving the drive slider 31 in the (e) direction against the tensile force of the spring 34 can be small.

In order to drive the drive slider 31 in the (e) direction against the biasing force of the spring 34, the first follower pin 36 is fixedly mounted on the upper surface of the drive slider 31 which is the first driven member. ing. A rotating arm 41, which is a second driven member, is provided on the lower surface of the upper chassis 21. One end of the rotating arm 41 has an upper chassis 2
It is rotatably supported by a support shaft 42 fixed to 1. An eject roller 43, which functions as an ejector that serves as a pressing portion when the cartridge C is ejected, is rotatably provided on the lower surface of the tip of the rotating arm 41. Further, a second follower pin 44 is fixed to the upper surface of the intermediate portion of the rotating arm 41, and the follower pin 44 is
It projects upward from an arc hole 21e formed in the upper chassis 21. The circular arc hole 21e is formed in the same circular arc locus around the support shaft 42.

Further, the second follower pin 44 is
It passes through a hole 31e formed in the drive slider 31 and projects upward. A holding hole 31f as a holding portion is formed on the rear end side of the hole 31e. As shown in FIG.
When the rotating arm 41 is rotated most clockwise, and when the drive slider 31 is moving in the (d) direction,
That is, when the disk in the cartridge C can be played back or recorded / played back, the follower pin 44 is restrained by the holding hole 31f so that the turning arm 41 does not turn counterclockwise without permission. In addition,
If the rotating arm 41 is biased clockwise by a weak spring member, the follower pin 44 is held by the holding hole 31f.
It is possible to prevent the rotation arm 41 in the clockwise rotation state from freely moving without restraining the.

As shown in FIG. 2, a rotating body 45 is provided on the lower surface of the upper support frame 6. The rotating body 45 serves as a driving member provided on the side of the support portion formed by the supporting frames 5 and 6, and the follower pins 36 and 44 serve as driven members on the driving unit H side driven by the rotating body 45.
The center of the rotating body 45 is rotatably supported by a shaft 46 fixed to the lower surface of the upper support frame 6. The upper support frame 6 is formed with a guide hole 6a having a locus of a constant radius r1 (see FIG. 2) around the shaft 46, and a detection pin 49 fixed to the upper surface of the rotating body 45 is inserted into the guide hole 6a. Has been done. As shown in FIG. 4 and the like, the opening width dimension of the guide hole 6a is small and slightly larger than the diameter of the detection pin 49.

The upper support frame 6 has a linearly long hole-like first relief portion 6b having a sufficiently wide opening width (b) (see FIG. 2).
And the arc-hole-shaped second relief portion 6c having a sufficiently wide width dimension (b) is formed. As shown in FIG. 4, the second relief portion 6c is an arc hole having a constant radius r2 centered on the support shaft 42 which is the rotation center of the rotating arm 41. The opening width dimension (b) of the first and second relief portions 6b and 6c is sufficiently wider than the diameter dimension of the first follower pin 36 and the second follower pin 44. Rotating body 45
A tooth 45a is formed on the outer periphery of the. As shown in FIG. 4, a motor Ma is mounted in the lower support frame 5 as a power source. A worm gear 47 is fixed to the output shaft of the motor Ma. A reduction gear train 48 is provided in the lower support frame 5, and the output gear 48 a at the final stage is provided in the rotating body 4.
5 teeth 45a. The rotational force of the motor Ma as a power source is decelerated and transmitted by these gears, and the rotating body 45 is rotationally driven in the clockwise direction and the counterclockwise direction.

A first driving portion 51 and a second driving portion 52 are formed on the rotating body 45 as a driving member on the supporting portion side. Each of the drive parts 51 and 52 is a cam hole, that is, a cam part, which vertically penetrates the rotating body 45. However, these may be cam portions having bottomed grooves. The first drive portion 51, which is one of the cam portions, has an opening portion 51 having a sufficiently wide opening area.
a and the drive restraint portion 5 approaching the rotation center direction of the rotating body 45
1b and an escape portion 51c that extends in an arc shape with a constant radius with respect to the shaft 46 that is the center of rotation of the rotating body 45 are continuously formed. The second drive portion 52 which is the other cam portion
Is an opening portion 52a having a sufficiently large opening area and the rotating body 45.
An escape portion 52b that extends at a constant radius r3 (see FIG. 2) with respect to the shaft 46 that is the center of rotation and a drive restraint portion 52c that extends outward from the center of rotation are continuously formed. The first follower pin 36 extending from the drive slider 31 (first driven member) of the drive unit H is shown in FIG.
As shown by 2, it passes through the inside of the first drive portion 51 of the rotating body 45 and extends into the inside of the first escape portion 6b of the upper support frame 6. The second follower pin 44 extending from the rotating arm 41 (second driven member) passes through the hole 31e of the drive slider 31 as indicated by * 3, and further rotates the rotating body 4
5 in the second drive section 52 of the upper support frame 6
Extends into the escape portion 6c.

In the plan view shown in FIG. 4, the support shaft 42, which is the rotation center of the rotating arm 41, is positioned δ in the direction of the second relief portion 6c with respect to the shaft 46, which is the rotation center of the rotating body 45. They are arranged offset. Then, as described above, in the upper support frame 6, the arc-shaped oblong hole serving as the second escape portion 6c forms an arc locus of radius r2 with respect to the support shaft 42 serving as the rotation center of the rotation arm 41. Is formed.
In addition, as shown in FIG. 2, the relief portion 52b of the second drive portion 52 formed on the rotating body 45 is formed in an arc locus having a constant radius r3 with respect to the support shaft 46 serving as the rotation center of the rotating body 45. Has been done. Therefore, from the state of FIG.
Is rotated counterclockwise, as shown in FIG. 5, FIG. 6, and FIG.
Departing from c toward the center of rotation, under the escape portion 6c,
Only the drive restraint portion 52c of the second drive portion 52 moves.

Further, as shown in FIG. 1, detection switches S1, S2, S3, S4 for detecting the moving position of the detection pin 49 are provided on the upper surface of the upper support frame 6. Figure 1
As shown in FIG.
The pushing unit G is provided between the outside of the housing and the side surface of the housing 1.
Is provided. As shown in FIG. 11, a guide shaft 15 is provided between the bottom plate and the ceiling plate of the housing 1,
A lifting base 16 is supported on the guide shaft 15.
As shown in FIG. 1, a guide hole 1b extending vertically is formed on the side surface of the housing 1, and a slide shaft 17 protruding from the elevating base 16 is inserted into the guide hole 1b. That is, the elevating base 16 is supported by the guide shaft 15 and the guide hole 1b so as to be vertically movable in the housing 1. A second drive hole 10d extends obliquely to the drive lever 10, and the moving force of the drive lever 10 in the (a)-(b) directions causes the elevating base 1 of the pushing unit G to move.
6 is driven up and down.

The first set of driving holes 10a, 10a for driving the playing portion F and the second driving hole 10d for driving the pushing unit G have the same inclination angle, and as a result, the driving lever The moving force of 10 in the (a)-(b) directions causes the playing section F and the pushing unit G to move up and down (selectively move) in synchronization. When the drive lever 10 stops at a predetermined position, the playing section F and the pushing unit G
Are stopped at the selected position corresponding to the same disk standby portion (any one of E1 to E4).
As shown in FIG. 11, the casing 1 extends along the guide shaft 15.
The elevating base 16 that moves up and down inside has a U-shaped cross section, and a slider 62 is attached to the outside thereof.
As shown in FIG. 4, the shaft 61 is fixed to the elevating base 16, and the elongated hole 62 a is formed in the slider 62.
The shaft 2a is inserted through the shaft 2a. The slider 62 is also provided with an elongated hole (not shown) that slides on the sliding shaft 17 fixed to the elevating base 16. as a result,
The slider 62 is (n)-(l) with respect to the lifting base 16.
It can slide in any direction.

As shown in FIG. 11, a motor Mb is held in the lift base 16. Lifting base 16
A reduction gear group 63 is provided inside, and a pinion gear 64 at the final stage thereof meshes with a rack 62b formed on a slider 62. The slider 6 is driven by the driving force of the motor Mb.
2 is driven in the (nu)-(ru) direction. The guide shaft 1
5, an arm-shaped pushing member 65 is provided so as to be rotatable and slidable in the axial direction. Pushing member 65
Has a curved arm, and the tip of the arm has a pressing portion 65.
It is a. The drive arm 6 is provided at the base of the pushing member 65.
5b is provided, and the drive arm 65b is sandwiched between the elevating base 16 and the slider 62. Therefore, as shown in FIG. 6, the pushing member 65 causes the holding frame 3 of the disc storage portion A to
When the elevating base 16 moves up and down along the guide shaft 15 in a state in which it is rotated to the position where it is disengaged to the outside, the pushing member 65 also slides on the guide shaft 15 and moves up and down together.

A pin 66 is fixed to the drive arm 65b of the pushing member 65, and this is the drive slot 62c of the slider 62.
Has been inserted inside. When the slider 62 is driven in the (R) direction by the power of the motor Mb, a rotational force is applied to the pin 66 from the drive slot 62c, and the pushing member 65 is pushed.
Is driven clockwise around the guide shaft 15. At this time, the pressing portion 65a at the tip of the pushing member 65 passes through any of the slits 3b opened between the holding ribs 3a of the holding frame 3 and enters the inside of any of the disk standby portions E1 to E4. Get in.

Next, the operation of the disk device will be described. (Disc Selection Operation) In this disc device, the cartridge C is inserted into each of the plurality of disc standby portions E1 to E4 and stands by. Therefore, the playing section F and the pushing unit G are moved to a position where any one of the disk standby sections is selected. In this selective movement operation, the reduction gear 12,
13 is driven, and the drive lever 10 is moved in the (a) or (b) direction by the engagement of the pinion gear 14 and the rack 10b. Due to this movement, the first set of drive holes 10
A moving force is applied to the support shafts 8 and 8 from a and 10a, and the lower support frame 5 and the upper support frame 6 of the playing portion F are moved up and down (selected movement). Then, the motor is stopped at a position where the holding guide passages 21d, 21d of the upper chassis 21 of the drive unit H supported in the support frames 5 and 6 face either of the disk standby portions. In the above selection operation, when the drive lever 10 moves in the (a)-(b) direction, the second drive hole 10 formed in the drive lever 10
A moving force is applied to the support shaft 17 by d, and the elevating base 16 of the pushing unit G shown in FIG. The holding guide passage 21 of the drive unit H
When d and 21d are stopped at any one of the disc standby portions, the pushing member 65 of the pushing unit G faces the outside of the slit 3b of the holding frame 3 corresponding to the same disc standby portion.

(Operation in Playing Part F) FIG. 8 shows the lower chassis 22 which is the movable part of the drive unit H in the holding position rotated in the (h) direction with respect to the upper chassis 21, but FIG. The rotation position of the rotating body 45 at that time is shown. In FIG. 4, the rotating body 45 is in the most clockwise direction, and the detection pin 49 fixed to the rotating body 45 is at the most end position of the guide hole 6 a formed in the upper support frame 6.
At this time, the detection output of the detection switch S1 fixed to the upper support frame 6 shown in FIG. 1 is ON.

In the state of FIG. 4, the first follower pin 36 fixed to the drive slider 31 of the drive unit H is
It is located inside the opening 51 a of the first drive unit 51 of the rotating body 45. The opening 51a is a round hole having a wide opening area,
The first follower pin 36 is free to move within the open portion 51a without being restrained.
The first follower pin 36 is inserted into the first escape portion 6b formed in the upper support frame 6. First
The opening width dimension (b) of the escape portion 6b of the follower pin 36
It is formed sufficiently larger than the diameter of. Therefore,
The follower pin 36 inserted into the open portion 51a of the rotating body 45 and the first relief portion 6b of the upper support frame 6 is not restricted to the upper support frame side and is at least the opening width dimension (b). It is in a free state inside (see FIG. 10).

In FIG. 4, the driving slider 31 is moved in the (d) direction by the tensile force of the spring 34,
The shaft 33 is located at the upper end (to) of the crank hole 31c of the drive slider 31. Therefore, the lower chassis 22
As shown in FIG. 8, using the support shaft 23 as a fulcrum,
Has been rotated in the direction. The lower chassis 22
Is also urged in the (H) direction by the urging force of the auxiliary spring member 35 provided on the support shaft 23. That is, the lower chassis 22 is rotated to the holding position shown in FIG. 8 by the urging forces of both the spring 34 and the auxiliary spring member 35. Further, the second follower pin 44 fixed to the rotating arm 41 passes through the inside of the open portion 52 a of the second drive portion 52 of the rotating body 45 and passes through the second escape portion 6 of the upper support frame 6.
It projects into c. The opening portion 52a is a round hole having a sufficient opening area, and the second relief portion 6c has an opening width dimension (b) sufficiently wider than the diameter of the follower pin 44.
Therefore, in the state of FIG. 4, the second follower pin 44 is also not restrained from the upper support frame 6 side (see FIG. 10). At this time, the rotating arm 41 is rotating clockwise, and the eject roller 43 at the tip thereof is stopped at the first position (standby position) on the innermost side of the drive unit H. Further, as shown in FIG. 4, the holding hole 31f of the drive slider 31 which has moved in the (d) direction restrains the second follower pin 44, and the rotating arm 41 can freely move from the first position. There is no such thing.

As described above, when the lower chassis 22 is in the closed state (the state shown in FIG. 8) with respect to the upper chassis 21, the follower pins 36 and 44, which are driven members on the drive unit H side, support the upper portion. The frame 6 and the rotating body 45 as a driving member attached to the frame 6 can freely move at least by the opening width dimension (b) (see FIG. 10). Therefore, the drive unit H has the elastic body 24 with respect to the support portion including the lower support frame 5 and the upper support frame 6.
Is elastically supported. That is, in the power transmission path from the upper support frame 6 and the rotating body 45 which is a driving member attached thereto to the follower pins 36 and 44 which are driven members in the driving unit H, in the state of FIG. Only the open parts 51a and 52a
The restraining force is released by the openings of the escape portions 6b and 6c, so that the drive unit H can be removed from the support frames 5 and 6.
Is completely elastically supported by the elastic body 24.

In the state shown in FIGS. 4 and 8, when the cartridge C is inserted into the holding guide passages 21d, 21d of the upper chassis 21, the clamp table 25 provided on the lower chassis 22 is inserted into the hole on the lower surface of the cartridge C. To enter the,
The central portion of the disc D is clamped on the clamp table 25. By driving the disc with the clamp table 25, the reproducing operation or the recording / reproducing operation by the head 26 becomes possible. As described above, the follower pins 36 and 44 on the drive unit H side are not constrained by the drive portions 51 and 52 (cam portions) of the upper support frame 6 and the rotating body 45, and the drive unit H is elastically supported by the elastic body 24. Since the vehicle body is in the open state, the reproduction operation and the recording / reproduction operation are not adversely affected even if the vehicle body vibration acts on the housing 1.

From the state shown in FIG. 4, the rotating body 45 is rotated counterclockwise by the power of the motor Ma, and when the movement of the detection pin 49 is detected by the detection switch S2 and the switch Ma is turned on, the motor Ma is turned on. Stopped. The rotation angle of the rotating body 45 at this time is as shown in FIG. While the rotating body 45 rotates from the angle of FIG. 4 to the angle of FIG. 5, the first follower pin 36 is pulled in the direction close to the rotation center by the drive restraint portion 51b of the first driving portion 51 of the rotating body 45. The drive slider 31 is driven in the (e) direction in opposition to the pulling force of the spring 34. As a result, the shaft 33
Is guided to the lower end (g) of the crank hole 31c formed in the drive slider 31, and the lower chassis 22 resists the urging force of the auxiliary spring member 35 and uses the support shaft 23 as a fulcrum (i). It is turned to the open position.

When the rotating body 45 is rotated to the position shown in FIG.
As shown in FIG. 9, the clamp table 25 provided on the lower chassis 22 is detached downward from the region of the holding guide passage 21d of the upper chassis 21. Holding guide passage 21
When the cartridge C is held in d, the clamp table 25 is pulled out from the inside of the cartridge C in the state shown in FIGS. 5 and 9, and the holding of the cartridge C is released. When the cartridge C is not held, the holding guide passages 21d, 21
The cartridge C is ready to be received in d. Further, while the state of FIG. 4 to FIG.
The arc-shaped relief portion 52b of the second drive portion 52 of FIG. 6 moves the position of the second follower pin 44 in the counterclockwise direction, and the rotational force of the rotating body 45 at this time is given to the follower pin 44. In the states of FIGS. 5 and 9, the eject roller 43 of the rotating arm 41 remains stopped at the first position (standby position) on the back side of the drive unit H.

As described above, when the rotating body 45 is in the position of FIG. 4, the lower chassis 22 is rotated in the (h) direction to the holding position shown in FIG. 8, and the rotating body 45 is rotated to the position of FIG. When the lower chassis 22 moves, the lower chassis 22 rotates in the (r) direction, and the lower chassis 22 becomes the open position shown in FIG. Swivel arm 4
When 1 is further operated, the rotating body 45 is further rotated counterclockwise from the state of FIG. While the rotating body 45 rotates counterclockwise from the state of FIG. 5 to the state of FIG. 6 and further to the state of FIG. 7, the first follower pin 3
For 6, the arc-shaped relief portion 51 of the first drive portion 51 is provided.
c slides. Therefore, the drive slider 31 does not move while moving in the (e) direction. Therefore, the lower chassis 22 remains in the open position in which the lower chassis 22 is rotated in the (r) direction.

On the other hand, in the state shown in FIG.
The drive restraint portion 52c of the drive portion 52 of FIG. 2 comes to the position of the second follower pin 44. Here, the center of rotation of the rotating body 45 and the center of rotation of the rotating arm 41 are displaced by an amount indicated by δ in FIG. Further, the second escape portion 6c is formed in a locus of radius r2 around the support shaft 42 which is the rotation center of the rotating arm 41, and the escape portion 52b of the second drive portion 52 rotates the rotating body 45. It is formed with a constant radius r3 with respect to the center axis 46. Therefore, when the rotating body 45 further rotates in the counterclockwise direction from the position of FIG. 5, the escape portion 52b of the second drive portion 52 of the rotating body 45 is located inside the second escape portion 6c of the upper support frame 6. It moves so that it may come off. Therefore, in the subsequent counterclockwise rotation operation of the rotating body 45, as shown in FIGS. 5 to 6 and 7, only the drive restraint portion 52c of the second drive portion 52 is the second escape portion. 6c, and the second follower pin 44
Is restrained by the drive restraint portion 52c and driven counterclockwise.

When the motor Ma is stopped by the detection pin 49 provided on the rotating body 45 when the detection switch S3 shown in FIG. 1 is turned on, the rotating posture of the rotating body 45 becomes the state shown in FIG. Becomes During this time, the rotating arm 41
Rotates to the second position, and the eject roller 43 moves to the second position.
To the position (discharging position). While the rotating arm 41 moves to the second position shown in FIG. 6, the drive slider 31 remains moving in the (e) direction as described above, and the lower chassis 22 is moved to the open position away from the upper chassis 21. It is rotating. Therefore, the holding guide passage 21 of the upper chassis 21
When the cartridge C is inserted in the d and 21d, the rear end of the cartridge C is pushed by the eject roller 43 at the tip of the rotating arm 41, and the cartridge C is moved to one of the disc standby portions (the maximum in FIG. 9). It is returned to the upper disk standby portion E4). In the operation of returning the cartridge C to the disk standby portion, the rotating arm 41 is stopped at the second position in FIG. 6, and the rotating arm 41 is not rotated counterclockwise anymore. Then, after the cartridge C is returned to the disk standby portion, the rotating body 45 is driven to rotate in the clockwise direction, the rotating arm 41 rotates in the clockwise direction, and the eject roller 43 moves to the first position (see FIG. 5). It is returned to the standby position).

Next, when the cartridge C located in any one of the disk standby portions is to be ejected from the insertion opening 2a of the nose portion 2, the rotary body 45 is further moved counterclockwise from the state shown in FIG. It is turned to the turning position shown in FIG. At this time, the detection switch S4 shown in FIG.
It is switched to ON output by 9. At this time, the eject roller 43 at the tip of the rotating arm 41 moves into any one of the disc standby portions to reach the third position (position in FIG. 7), and the cartridge C in the disc standby portion is moved to the eject rollers 43. It is pushed and discharged forward from the insertion opening 2a. That is, when the rotating body 45 rotates counterclockwise from the state of FIG. 5, only the rotating arm 41 rotates with the lower chassis 22 still rotating to the open position as shown in FIG. By rotating the rotating arm 41 to the position of FIG. 6, the cartridge C in the drive unit H is returned to the inside of the disk standby portion, and when it is rotated to the position of FIG. 7, the cartridge in the disk standby portion is inserted. It is discharged from 2a.

(Operation of Pushing Unit G) As described above, the playing portion F is moved up and down by the movement of the driving lever 10, and the holding guide passages 21d and 21d of the upper chassis 21 of the driving unit H are moved to the disk waiting portions E1 to E4. When stopped at a position facing either of the above, the pushing member 65 of the pushing unit G faces the outside of the slit 3b of the holding frame 3 formed on the side of the same disk standby portion. The cartridge C is inserted from the insertion opening 2a into each of the disk standby portions E1 to E4 of the disk storage portion A when the pushing member 65 is outside the disk standby portion.

The motor M mounted on the elevating base 16 of the pushing unit G in a state where the playing unit F and the pushing unit G face one of the selected disk standby portions.
When the reduction gear group 63 is driven by b, the slider 62 is driven by the meshing of the pinion gear 64 and the rack 62b. When the moving direction of the slider 62 is the (ru) direction, the power conversion between the drive elongated hole 62c and the pin 66 causes
The push-in member 65 is driven in the clockwise direction, and the push-in member 65 passes through the slit 3b of the holding frame 3 and enters the inside of any one of the disk standby portions E1 to E4 (FIG. 5).
Of the chain line). Then, the rear end of the cartridge C located in the disc standby portion is pushed by the pushing portion 65a,
The cartridge C is transferred into the holding guide passages 21d, 21d of the upper chassis 21 of the drive unit H. After that, the slider 62 of the pushing unit G is driven in the (nu) direction, the pushing member 65 rotates counterclockwise, and in synchronization with this, the rotating body 45 rotates clockwise in the playing portion F. As shown in FIG. 4, the lower chassis 2 of the drive unit H
2 is rotated to the holding position shown in FIG.
The cartridge C transferred into d, 21d is held, and the central portion of the disk D is clamped by the clamp table 25.

After the cartridge C in the disk standby portion is transferred into the drive unit H and held in the drive unit H, the pushing member 65 is rotated counterclockwise,
It is stopped at the position shown in FIG. As a result, the pushing member 65 intervenes in the empty disk standby portion where the cartridge C has been transferred to the drive unit H side, and the new cartridge C is transferred from the insertion port 2a to the empty disk standby portion. It can be prevented from being inserted. The disk standby portion that has become empty when the cartridge C is transferred to the drive unit H is an area where the cartridge C that has completed reproduction or the like will be returned. Therefore, the pushing member 65 is inserted in the middle of the disk standby portion. By stopping the cartridge, it is possible to prevent the cartridge C from being inserted into the disk standby portion again.

When the reproduction of the disk in the cartridge C is completed, the lower chassis 22 of the drive unit H is in the open state shown in FIG. 9 and the rotating arm 41 is in the second position shown in FIG. 6, as described above. Then, the eject roller 43 pushes the cartridge C back from the drive unit H into the base disk standby portion. At this time, the slider 62 is moved in the (nu) direction, and the pushing member 6
5 is rotated to the outside of the holding frame 3 so that the returning operation of the cartridge C to the disk standby portion is not obstructed by the pushing member 65. In the above embodiment, a plurality of cartridges C are waiting in the disk storage portion A, and the lower support frame 5 and the upper support frame 6 in the playing portion F move up and down in the housing 1 to drive the drive unit H. Are opposed to the selected cartridge C. However, in the case of a disk device in which only one cartridge C is on standby in the disk storage portion A, a support portion including a lower support frame and an upper support frame is fixedly provided in the housing 1, and is provided in this support portion. The drive unit H is elastically supported by the elastic body 24. The support portion in this case may be the housing 1 itself.

Further, the disc storage portion A is formed by the holding frames 3 and 3 fixed in the housing 1, but a magazine in which the standby portions of a plurality of cartridges C are formed is provided in the housing 1. It may be detachably provided. Further, in the above embodiment, the drive member on the support portion side is the rotating body 45, but this rotating body 45 is a sliding lever that slides along a linear locus, an arc locus, etc. The first and second drive units 51 and 52 may be formed. In this case, the power source provided on the support portion side is not limited to the motor, and may be a solenoid or the like that moves the sliding lever. A drive member driven by a power source such as a motor and a solenoid and followers such as pins and protrusions provided on the drive member are provided on the support portion side such as the upper support frame 6 and provided on the drive unit H side. A cam portion may be formed on the driven member thus driven, and the driven member on the drive unit H side may be operated by the follower driven on the support portion side to drive the movable portion and the ejector.

The cam portion need not be a cam hole as in the embodiment, but may be a cam groove. Further, in the above-described embodiment, the movable portion of the drive unit H is the clamp table 2
Although it is a lower chassis 22 having 5 or the like, when a compact disc or the like which is not housed in a cartridge is loaded in the drive unit, a clamp arm or the like having a clamper for pressing the central portion of the disc to the turntable is driven. It is a movable part on the unit side. The recording medium is not limited to a mini disk, and may be another magneto-optical recording system or optical recording system disc, a magnetic disc, or a disc other than the disc.

[0049]

As described above, according to the present invention, the motive power from the power source provided in the support portion is generated by the cam portion and the follower,
It is transmitted to the driven member on the drive unit side. Then, a movable part provided on the drive unit side for holding and releasing the recording medium and an ejector for ejecting the recording medium to the outside of the unit are driven. However, when the movable portion holds the recording medium or when the ejector moves to the standby position, that is, when the reproducing operation or the recording / reproducing operation is performed on the recording medium, the opening portion of the cam restrains the follower. Is released. Therefore, during the reproducing or recording / reproducing operation, the driving member and the driven member are disengaged from each other, and the driving unit is elastically supported by the supporting portion. Therefore, external vibration such as vehicle vibration does not adversely affect the drive unit.

When the drive unit moves in the housing together with the support and the drive unit faces any one of a plurality of recording media waiting in the housing, the power is transferred to the moving support. By providing the power source and the driving member, it is possible to operate each mechanism in the driving unit regardless of the position of the supporting unit, and the reproducing / recording / reproducing operation of the recording medium is performed in the driving unit. The drive unit can be elastically supported with respect to the support portion during the operation. Also in this case, it is possible to prevent external vibration such as vehicle vibration from adversely affecting the drive unit.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire mechanical portion of a vehicle-mounted disk device as one embodiment of the present invention,

2 is an exploded perspective view showing a support frame of the disk device shown in FIG. 1 and a rotating body as a driving member;

FIG. 3 is an exploded perspective view showing each member of the drive unit,

4 shows the disk device shown in FIG. 1,
A plan view showing a state where the cartridge is held by the drive unit,

FIG. 5 is a plan view showing an operation in which the cartridge is transferred from the standby portion into the drive unit,

FIG. 6 is a plan view showing a state in which the cartridge in the drive unit is returned to the standby portion,

FIG. 7 is a plan view showing a state in which the cartridge in the standby unit is ejected from the insertion port,

FIG. 8 is a side cross-sectional view of the disk device showing a state in which a lower chassis as a movable portion is moved to a holding position by a drive unit.

FIG. 9 is a side cross-sectional view of the disk device showing a state where a lower chassis as a movable portion is moved to an open position by a drive unit.

10 is a sectional view taken along line XX in FIG. 4,

11 is a sectional view taken along line XI-XI in FIG. 4,

FIG. 12 is a partial side view showing the internal structure of a conventional disk device,

[Explanation of symbols]

A disk storage B Performance area C cartridge D disk E1-E4 Disc standby part F performance section G push unit H drive unit Ms, Ma, Mb motor 1 case 2 nose part 2a insertion slot 3 holding frame 3a retaining rib 3b slit 5 Lower support frame 6 Upper support frame 6b First relief part 6c Second relief part 10 Drive lever 16 lifting base 21 upper chassis 21d holding guide passage 22 Lower chassis as moving parts 24 Elastic body 25 clamp table 26 heads 31 Drive Slider as Driven Member 31c crank hole 33 axes 34 Extension spring 35 Auxiliary spring member 36 1st follower pin 41 Rotating arm as driven member 43 Eject roller 44 Second follower pin 45 rotating body 51 First Drive Unit (Cam Unit) 51a open part 52 Second drive section (cam section) 52a open part 65 Push member

Claims (2)

(57) [Claims] 1. A drive device for a recording medium, wherein a drive unit for driving the recording medium is elastically supported by a support portion, wherein the support portion is rotatably driven by a power source. A rotating body is provided, and the drive unit has a holding motion.
A driven member of the working, and a driven member for discharging operation, the
Movable being moved in between the position to open position and a recording medium that holds the recording medium introduced me by the moving force to the drive uni <br/> Tsu the capital of the driven member for holding operation Department and front
The driving unit is driven by the moving force of the driven member for the discharging operation.
Standby position and recording to allow movement of recording medium into knit
Transfer the media to the ejecting position where it is ejected outside the drive unit.
And a first cam portion and a second cam portion provided on the rotating body.
The driven member for holding operation has a follower sliding on the first cam portion, and the driven member for discharging operation is
A follower that slides on the second cam portion is provided on the first cam portion and the second cam portion.
In the drive restraint part for giving the driving force to the lower and the drive restraint part
An open that is formed continuously and releases the restraint on the follower
Is formed, and each of them is formed by the rotating force of the rotating body.
The position where the driven member is driven and the movable part holds the recording medium
To the standby position and the ejector moves to the standby position.
When each follower releases each cam part
A drive device for a recording medium, which is characterized in that it moves to another section . Wherein said drive unit according to claim wherein the supporting part in the housing move together, the drive unit is intended to face the one of the plurality of recording media to wait housing
Drive device 1 Symbol mounting of the recording medium.