JP2906669B2 - Disk cassette mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a draw-in type disk cassette mounting apparatus which automatically inserts a disk cassette after the disk cassette is partially inserted into a cassette holder.

[0002]

2. Description of the Related Art A conventional example of a disk cassette mounting apparatus will be described with reference to FIGS. 12 and 15
13 and 15 show the manual insertion process of the disk cassette D, FIGS. 13 and 15 show the automatic insertion process of the disk cassette D, and FIGS. 12 to 17, the chassis 1
An elevating operation member 8 is slidably provided in the directions of arrows a and a 'on the upper side, and a cassette holder 11 is arranged on the elevating operation member 8.

The left and right sides of the cassette holder 11 are bent in a substantially U-shape so as to face each other, and a pair of front and rear rollers 50 are supported outside the both sides 11a. The pair of front and rear rollers 50 are mounted on the roller moving surfaces 51 of both side portions 8 a of the lifting operation member 8, and the rear pair of rollers 50 are engaged in the vertical guide grooves 10 of the chassis 1. A spring 52 for urging the cassette holder 11 downward is hung between the cassette holder 11 and the chassis 1.

A return arm 37 is provided on the upper surface of the cassette holder 11 by a fulcrum pin portion 38 so as to be rotatable in the directions of arrows b and b '. Being energized.
The pin portion 37a at one end of the return arm 37 is a lifting operation member 8
Is pressed against the pressed portion 54.

At the rear end of the upper surface of the cassette holder 11, a shutter opening / closing arm 19 is supported by a fulcrum shaft 55 by arrows c and c '.
And is urged in the direction of arrow c by a return spring 56 hung between the cassette holder 11 and the cassette holder 11. A shutter latch 21 is provided at the tip of the shutter opening / closing arm 19.

[0006] The lock lever 57 is a shutter opening / closing arm 1
9 is provided rotatably in the directions of arrows c and c 'by the same fulcrum shaft 55, and the projection 58 is urged in the direction of arrow c by being pressed from the side by the return spring 56. A lock pin 5 is provided on the tip side of the lock lever 57.
The lock pin 59 is provided so as to be engageable with the locked portion 60 of the lifting operation member 8. The lock lever 57 and the locked portion 60 constitute trigger means E.

A retractable member 15 is provided on the upper surface of the cassette holder 11 so as to be slidable in the directions of arrows d and d 'by a guide shaft 61. The return arm 37 is provided in a notch 62 at the rear end of the retractable member 15. Of the other end is engaged. The front end of the retracting member 15 has an engaging member 6.
A return spring 6 is rotatably provided in the directions of arrows e and e 'by a fulcrum shaft 65,
6 is urged to the detached position in the direction of arrow e. The arm 67 of the engaging member 64 is bent vertically downward, and then horizontally bent below the cassette holder 11, and an engaging pin 68 is provided at the tip of the arm 67. I have.

A guide portion 69 is formed in front of the side portion 11a of the cassette holder 11, and as shown in FIGS. 12 and 13, the engaging member 64 is moved in accordance with the forward movement of the retracting member 15 in the direction of arrow d. When it is moved, the guide member 69 guides the engaging member 64 to rotate from the disengaged position to the engaged position in the direction of the arrow e ′ against the return spring 66. When the engaging member 64 is moved in accordance with the return movement of the retracting member 15 in the direction of the arrow d ', the return spring 66 rotates the engaging member 64 from the engaged position to the detached position in the direction of the arrow e.

A head device 4 is provided on the chassis 1 so as to be slidable in the radial direction of the disk.
Comprises an upper head section 5 and a lower head section (not shown). The upper head section 5 is provided rotatably with respect to the lower head section, and is urged by a spring 7 in a direction in which the head element of the upper head section 5 approaches the head element of the lower head section. A projection 5 a is provided on the upper head 5, and the projection 5 a is placed on the head lifting rod 14 of the cassette holder 11.

In the above configuration, when the disk cassette D is inserted into the cassette holder 11 (direction f), the shutter opening / closing arm 19 rotates in the direction of arrow c 'against the return spring 56, and The shutter 40 is gradually opened. As the insertion of the disk cassette D proceeds, the shutter opening / closing arm 19 is further rotated in the direction of arrow c ', and the lock lever 57 is similarly rotated in the direction of arrow c'. Then, the lock pin 59 of the lock lever 57 is disengaged from the locked portion 60 of the elevating operation member 8, and the lock is released. Then, the return arm 37 is rotated in the direction of arrow b by the drive spring 53, and the retraction member 15 is moved forward in the direction of arrow d. The forward movement of the retracting member 15 causes the engaging member 64 to move.
Is rotated to the engagement position in the direction of arrow e 'against the return spring 66 so that the engagement pin 68 is
9 is engaged. In this engagement state, the retracting member 15
Is displaced in the direction of arrow d by the drive spring 53, so that the disk cassette D is retracted from the retracting start position to the retracting end position.

Further, the lifting operation member 8 is slid in the direction of the arrow a by the rotation of the return arm 37 in the direction of the arrow b simultaneously with the operation of pulling in the disk cassette D. Then, each roller 50 of the cassette holder 11 is guided downward by the roller moving surface 51 of the elevating operation member 8, and the cassette holder 11 is lowered from the insertion position in FIG. 15 to the mounting position in FIG.

Next, when the eject mode is selected after desired recording and reproduction, the lifting operation member 8 is slid in the direction of the arrow a '. Then, each roller 5 of the cassette holder 11 is
0 is guided upward by the roller moving surface 51 of the lifting operation member 8, and the cassette holder 11 is raised from the mounting position in FIG. 17 to the insertion position in FIG.

When the lifting operation member 8 slides in the direction of the arrow a ', the return arm 37 is rotated in the direction of the arrow b', and the retracting member 15 is moved back in the direction of the arrow d '. The disk cassette D is pushed out in the direction of arrow f 'so as to be displaced from the drawing-in end position to the drawing-in start position by the return movement of the drawing-in member 15. When the disc cassette D is pushed out, the shutter opening / closing arm 19 rotates in the direction of arrow c to gradually close the shutter 40 and the lock lever 5.
7 also rotates in the direction of arrow c, and the lock pin 59 is engaged with the locked portion 60 to be locked.

At the final stage of the return movement of the lifting / lowering operation member 8 in the direction of arrow d ', the engaging member 64 is rotated in the direction of arrow e by the return spring 66, and the engaging pin 68 is moved out of the groove 29 of the disk cassette D. Be separated. Then, the shutter opening / closing arm 19 is further rotated in the direction of arrow c by the return spring 56 to further close the shutter 40, and the disc cassette D is pushed out in the direction of arrow f 'and ejected.

In the mounting process described above, the process can be divided into a manual insertion process in which the operator inserts the disk cassette D and an automatic insertion process in which the lock pin 59 is automatically released when the lock pin 59 is released.
The operator sometimes notices an error in the disc cassette D to be inserted at the stage of the automatic insertion process and pulls out the disc cassette D. In such a case, there is a drawback in that the cassette holder 11 falls down because the lock pin 59 has already been released, and the head is damaged.

In order to solve this drawback, the applicant of the present invention separately provided a pull-in trigger means for pulling the disk cassette into the cassette holder and a down trigger means for lowering the cassette holder from the insertion position to the mounting position. We have developed a mounting device to prevent falling.

Here, it is conceivable that the down-trigger is configured as follows using the configuration of a non-retractable mounting device. That is, a trigger arm is rotatably provided on the chassis 1 between a holder lock position and a release position, and a trigger spring is hung between the chassis 1 and the trigger arm to urge the trigger arm toward the holder lock position. At the holder lock position, the trigger arm holds the cassette holder 11 at the insertion position, and when the disk cassette D is pulled in to the retracted position, the front end of the disk cassette D presses the trigger arm to release the trigger.

[0018]

However, in the down trigger means having the above structure, the cassette holder 1 is not provided.
In order to rotate the trigger arm against the spring force of the trigger spring in the automatic retraction process, the spring force of the drive spring 53 of the retraction member 15 needs to be set large enough to retract the disc cassette and rotate the trigger arm. . When the spring force of the driving spring 53 is set to be large, a large driving force is required to move the elevating operation member 8 in the eject mode, and the strength of each member must be increased, which is a configuration suitable for a retractable mounting device. is not.

It is an object of the present invention to provide a disk cassette mounting apparatus which is of a retractable type and in which the drawback of the retractable member is suppressed to a necessary minimum and the drawback caused by increasing the retractable force is prevented. Make it an issue.

[0020]

A disk cassette mounting apparatus according to the present invention for solving the above-mentioned problems is slidable between an ejection position and an unejection position with respect to a chassis and attached to the unejection position side. The lifting operation member being urged, the lifting operation is performed with respect to the chassis following the sliding operation of the lifting operation member, and the ejecting position of the lifting operation member is located at an insertion position for inserting a disk cassette. a cassette holder which is located in the mounting position for mounting the disk cassette en ejecting position <br/>, urging the slidable in and the retracted end position side between the retracted starting position and a retracted end position with respect to the cassette holder And the position of the pull-in member is restricted to the pull-in start position. Retracting trigger means for releasing the position restriction of the retracting member, a holder lock member for moving between a restriction position for restricting the position of the elevating operation member to the eject position and a release position for not restricting the position, and A cam mechanism for displacing the holder lock member to the release position when the retraction member is displaced from the retraction start position to the retraction end position, the down trigger means being provided at a restriction position at the retraction start position of the retraction member. It is.

[0021]

When the operator inserts the disc cassette into the cassette holder, the engaging member engages with the retraction groove of the disc cassette during the insertion process to the retraction start position, and when the operator inserts the disc cassette to the retraction start position, the retraction trigger is activated. Then, the disk cassette moves from the drawing start position to the drawing end position together with the drawing member. When the retraction member is displaced to the retraction end position, the down-trigger means is actuated, the elevating operation member is displaced from the ejection position to the unejection position, and the cassette holder is displaced from the insertion position to the mounting position.
In this mounting process, the down trigger means is such that the cam mechanism is actuated by the stroke of the retracting member to displace the holder lock member from the restricting position to the release position, and the operation of this down trigger means almost uses the retracting force of the retracting member. Not in.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a disk cassette mounting device. In FIG. 1, a disk cassette D has an irregular square shape, and a recording disk D ₁ is provided in the case.
Is rotatably housed. A shutter 40 is slidably provided on the front end side of the case.
The head insertion hole 41 of the case is opened and closed by the slide. In addition, a drawing groove 29 is formed on both sides of the lower surface of the case at the insertion front end.

A disk motor (not shown) is fixed to the lower surface side of the chassis 1 of the mounting device, and the rotating shaft 2 of the disk motor projects above the chassis 1. A turntable 3 is fixed to a protruding portion of the rotating shaft 2, and a disk of a disk cassette mounted on the turntable 3 is chucked.

A head device 4 is provided on the chassis 1 so as to be slidable in the radial direction of the disk.
Consists of an upper head section 5 and a lower head section 6. Upper head 5
Is provided rotatably with respect to the lower head portion 6, and is urged by a spring 7 in a direction in which the head element of the upper head portion 5 approaches the head element of the lower head portion 6.

The elevating operation member 8 is slidably provided on the chassis 1 between an eject position (the position shown in FIG. 8) and an unejected position (the position shown in FIG. 9), and is hung between the chassis 1. It is urged toward the unejected position by a tension spring 9. Guide grooves 10 are formed at two places on both sides 8 a of the elevating operation member 8, and each guide portion 12 of the cassette holder 11 is inserted into each guide groove 10.

The cassette holder 11 is disposed on the elevating operation member 8, and is configured to hold the disk cassette D. On both sides 11a of the cassette holder 11, a guide projection 13 is provided in addition to the guide section 12, and the guide projection 13 is inserted into the guide groove 1a of the chassis 1. The cassette holder 11 moves up and down following the sliding operation of the elevating operation member 8, and the eject position of the elevating operation member 8 is adjusted.
Located in the insertion position of the disk cassette D with location (position in FIG. 8), located in the mounting position of the disk cassette D (position of FIG. 9) in Ann eject position. Also, cassette holder 1
A head elevating rod portion 14 is integrally provided in front of the insertion of 1, and the protruding portion 5 a of the upper head portion 5 rides on the head elevating rod portion 14. When the cassette holder 11 is at the insertion position, the upper head portion 5 is at the separated position (FIG. 8).
When the cassette holder 11 is at the mounting position, the upper head portion 5 is at the pressure contact position (the position in FIG. 9).

The pull-in member 15 is disposed on the cassette holder 11, and the pull-in member 15 has three long holes 16 formed therein. The projection 17 of the cassette holder 11 is disposed in the elongated hole 16, and the retracting member 15 is slidably provided between a retracting start position (the position in FIGS. 2 and 3) and a retracting end position (the position in FIG. 6). ing. Further, a tension spring 18 is hung between the retraction member 15 and the cassette holder 11, and the retraction member 15 is urged toward the retraction end position.

The shutter opening / closing arm 19 is disposed on the pull-in member 15, and the base of the shutter opening / closing arm 19 is rotatably supported by a fulcrum pin 20. A shutter engaging portion 21 is provided at a tip of the shutter opening / closing arm 19, and the shutter engaging portion 21 protrudes below a hole 22 of the retracting member 15. The shutter opening / closing arm 19 is displaced between a shutter closed position (the position shown in FIG. 2) and a shutter open position (the position shown in FIG. 3), and is moved toward the shutter closed position by a tension spring 23 hooked between the shutter 15 and the retracting member 15. Being energized.

The engaging member 24 is rotatably supported by a fulcrum pin 25 at the front end of the retracting member 15.
Is provided with a cassette pressed portion 27 projecting downward from the hole 26 of the drawing member 15. The engaging member 24 is provided with a claw portion 28 which is bent so as not to hinder the insertion of the disc cassette D. The engaging member 24 is the claw portion 2
8 moves between an engaging position (position shown in FIG. 4) engaging with the drawing groove 29 of the disk cassette D and a non-engaging position (position shown in FIG. 3) not engaging with the drawing groove 29. And is urged toward the non-engagement position side by a tension spring 30 hooked between them.

The retracting trigger means A has a locking groove 31 formed in the engaging member 24, which is shown in detail in FIG.
The locking projection 32 of the cassette holder 11 is arranged in the locking groove 31. A locking surface 31a is formed in the locking groove 31 using the end surface, and in a locked state (solid line position) in which the locking projection 32 is locked to the locking surface 31a, the engaging member 24 is in the non-engaging position. And the retraction member 15 is connected to the tension spring 30
Is positioned at the retraction start position. When the engaging member 24 is displaced to the engaging position, the locking projection 32 is disengaged from the locking surface 31a, and the lock is released (a virtual line position).

The down trigger means B has a holder locking member 33 which is shown in detail in FIG. The holder lock member 33 is rotatably supported by a fulcrum pin portion 34, and is restricted (a solid line position).
And between the release position and the release position (virtual line position). In the restricting position, the lock claw 33a of the holder lock member 33 is engaged with the protrusion 35 of the elevating operation member 8, and the position of the elevating operation member 8 is restricted to the eject position. Lifting member 8 in the release position
Is displaced to the unejected position by the spring force of the extension spring 9.

The holder lock member 33 includes a pin 33
The pin portion 33b is inserted into the guide groove 36 of the pull-in member 15, and the pin portion 33b and the guide groove 36 constitute a cam mechanism C. This cam mechanism C is a retractable member 1
The position of the holder lock member 33 is displaced by the slide of No. 5, and the retracting member 15 is located at the regulation position from the retracting start position to the position immediately before the retracting end, gradually displaced from the position immediately before the retracting end, and is released at the retracting end position. Position.

The return arm 37 is rotatably supported by a fulcrum pin 38 on the cassette holder 11, and a pin 37 a at one end of the return arm 37 is locked to the pull-in member 15. The other end of the return arm 37 is
The pressed portion 37b is pressed by the pressing portion 39 of the lifting operation member 8 in the second half stroke from the unejected position to the ejected position. When the pressed portion 37b receives the pressing force, the retracting member 15 is displaced from the retracting end position to the retracting start position against the tension spring 18 by receiving the rotational force in the direction of arrow a in FIG.

The operation of the above configuration will be described below.

When the operator inserts the disk cassette D into the cassette holder 11 in the cassette insertion standby state shown in FIG. 2, the front end of the disk cassette D presses the shutter latch 21 and the shutter opening / closing arm 19 extends the tension spring. 2
3 moves to the shutter open position side. This movement of the shutter opening / closing arm 19 gradually opens the shutter 40, and the shutter opening position of the shutter opening / closing arm 19 reaches the shutter opening completed state in FIG.

When the disc cassette D is further inserted from this state, the front end of the disc cassette D presses the cassette pressed portion 27, and the engaging member 24 rotates to the engaging position against the tension spring 30. This rotation causes the engagement member 2
4 engages with the recess 29 and the locking projection 3
2 is disengaged from the locking surface 31a and is brought into a state immediately after the release trigger means A of FIG. 5 is released. Then, the retracting member 15 slides toward the retracting end position by the tension spring 18 and the disk cassette D is retracted together with the retracting member 15 to the retracting end position.

When the retracting member 15 is slid, the holder lock member 3 may be slid from immediately before the retracting end position (immediately before the release of the down trigger means in FIG. 5).
3 is displaced to the release position (down trigger means B in FIG. 6).
(The state immediately after the release), the pulling force of the pulling member 15 is hardly required for the operation of the down trigger means B, and the spring force of the tension spring 18 is sufficient to the degree required for pulling the disk cassette D. When the holder lock member 33 is displaced to the release position, the elevating operation member 8 is displaced to the unejected position side by the tension spring 9, and each guide portion 12 descends the inclination of each guide groove 10, and the cassette holder 11 becomes the disk. It is lowered to the mounting position together with the cassette D (the cassette mounted state in FIG. 7). Also the upper head portion 5 lowered with lowering of the cassette holder 11, the disk D ₁ is turned with each head element of the disc cassette D attachment state and the upper head portion 5 beneath the head portion 6 is pressed state to the disk D ₁ It is rotatably supported by the table 3.

In this mounting process, the disc cassette D once inserted may be pulled out due to the wrong disc cassette D to be inserted. After the release trigger means A is released (the state of FIG. 4), the down trigger means B
5 is released (the state shown in FIG. 5), since the engaging member 24 is engaged, the retracting member 15 is returned to the retracting start position against the tension spring 18 by the withdrawal stroke of the disk cassette D. . When the retracting member 15 is returned to the retracting start position, the engaging member 2 is
4 rotates, the locking projection 32 locks on the locking surface 31a, and the retraction trigger means A is again locked. The rotation of the engagement member 24 also causes the claw portion 28 to move the disc cassette D
When the disk cassette D is further pulled out, the shutter opening / closing arm 19 is pulled out of the tension spring 2.
At 3, the disk cassette D is pulled out while returning to the shutter closed position.

When the desired recording / reproduction is completed and the eject mode is selected, the elevating operation member 8 is moved to the eject position against the extension spring 9 or the extension spring 18 or the like. The movement of the elevating operation member 8 is performed by the tension spring 1.
Since the spring force of No. 8 is kept to a necessary minimum, it can be moved smoothly. When the lifting operation member 8 moves to the eject position, each guide section 12 rises the inclination of each guide groove 10 to move the cassette holder 11 to the insertion position. Can also be raised. When the lifting operation member 8 is further moved to the eject position side from this state, the pressing portion 39 of the lifting operation member 8 is moved.
Presses the pressed portion 37b of the return arm 37, and the return arm 37 rotates in the direction of arrow a in FIG. Return arm 37
With this rotation, the retraction member 15 is slid toward the retraction start position against the tension spring 18. When the retraction member 15 slides, the holder lock member 33 is first displaced to the regulating position, and then the engaging member 24 is rotated by the tension spring 30 to displace the claw portion 28 to the disengaged position. When the claw portion 28 is displaced to the disengaged position, the shutter opening / closing arm 19 is rotated by the extension spring 23 to the shutter closed position side. Then, the disc cassette D is pushed out toward the cassette insertion port while the shutter 40 is gradually closed.

In this embodiment, the down trigger means B mounts the holder lock member 33 on the cassette holder 11 and at the same time moves the cam mechanism C between the retracting member 15 mounted on the cassette holder 11 and the holder lock member 33.
Is provided, the position of the holder lock member 33 and the cam mechanism C can be determined with reference to the cassette holder 11, so that there is an advantage that the alignment at the time of assembly can be easily performed.

[0041]

As described above, according to the present invention, the cassette holder is provided so as to be able to move up and down with respect to the chassis, the elevating operation member for operating the elevating and lowering of this cassette holder is provided, and the draw-in member is slidable on the cassette holder. A pull-in trigger means for starting the retraction of the disc cassette by the retraction member and a down-trigger means for starting the displacement of the cassette holder toward the mounting position after the retraction is completed. When the holder lock member and the retracting member are moved from the retracting start position to the retracting end position, the holder lock member is moved from the regulating position to regulate the member to the ejecting position and the releasing position where the position is not regulated. Because it is composed of a cam mechanism that displaces Attractive force of the suction member sufficient with a small force is an effect that prevents the disadvantages attributed to be of a minimum required to retract the disk cassette, to increase the attractive force of the suction member.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an upper side of a disc cassette mounting device (embodiment).

FIG. 2 is a schematic plan view (embodiment) of the mounting device in a cassette insertion standby state.

FIG. 3 is a schematic plan view (embodiment) of the mounting device in a shutter opening completed state.

FIG. 4 is a schematic plan view (embodiment) of the mounting device in a state immediately after the retraction trigger is released.

FIG. 5 is a schematic plan view (embodiment) of the mounting device in a state immediately before the release of the down trigger means.

FIG. 6 is a schematic plan view (embodiment) of the mounting device in a state immediately after release of the down trigger means.

FIG. 7 is a schematic plan view of the mounting device in a cassette mounted state (example).

FIG. 8 is a schematic side view of the mounting device in a cassette insertion standby state (embodiment).

FIG. 9 is a schematic side view of the mounting device in a cassette mounted state (example).

FIG. 10 is a perspective view of an essential part in the vicinity of the retraction trigger means (embodiment).

FIG. 11 is a perspective view of an essential part in the vicinity of a down trigger means (example).

FIG. 12 is a schematic plan view of a mounting device in a manual insertion process (conventional example).

FIG. 13 is a schematic plan view of a mounting device in an automatic insertion process (conventional example).

FIG. 14 is a schematic plan view of a mounting device in a cassette mounted state (conventional example).

FIG. 15 is a schematic side view of a mounting device in a manual insertion process (conventional example).

FIG. 16 is a schematic side view of a mounting device in an automatic insertion process (conventional example).

FIG. 17 is a schematic plan view of a mounting device in a cassette mounted state (conventional example).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chassis 8 ... Elevating operation member 11 ... Cassette holder 15 ... Retraction member 33 ... Holder lock member A ... Retraction trigger means B ... Down trigger means C ... Cam mechanism D ... Disk cassette

Claims (1)

(57) [Claims] An up-down operation member slidable between an eject position and an un-eject position with respect to a chassis, and urged toward the un-eject position; The lifting operation member moves upward and downward,
A cassette holder which is located in the mounting position for mounting the disk cassette en eject position of the elevation operating member located in the insertion position for inserting a disk cassette in location, between a retracted starting position and a retracted end position with respect to the cassette holder A pull-in member slidable and biased toward the retraction end position side; a retraction trigger means for restricting the position of the retraction member to a retraction start position and releasing the position restriction of the retraction member by inserting the disk cassette; A holder lock member that moves between a restriction position that restricts the position of the lifting operation member to an eject position and a release position that does not restrict the position, and the holder lock member is located at a restriction position at a retraction start position of the retraction member; When the retracting member is displaced from the retracting start position to the retracting end position, the holder lock member Mounting device of the disc cassette is characterized in that a down-triggering means comprising a cam mechanism for displacing the release position.