JPH0548278Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a disk transfer mechanism, and more particularly to a disk transfer mechanism that can reliably hold and transfer a disk with a simple structure.

BACKGROUND TECHNOLOGY For example, a so-called joke box that automatically reproduces audio records, etc., or a disk on which video signals, audio signals, tracking control reference signals, etc. are respectively recorded, is used, for example, with a playback needle, and the connection between the playback needle and the disk is used. An information recording medium reproducing apparatus having a configuration in which a video signal, an audio signal, and a tracking control reference signal as main information signals are reproduced as changes in capacitance by relative sliding scanning, or in a configuration in which they are reproduced using optical means. Due to the structure of the device, it is necessary to move the disk over a predetermined range within the device, and for this reason, a disk transfer mechanism is generally incorporated.

Generally speaking, this type of disk transfer mechanism includes one configured to transfer the disk in the vertical direction;
There is a structure in which the disk is held in a vertical position and transferred horizontally. Conventionally, in the configuration of (2), it is common to simply place the disk on a disk holder that holds the disk and move it up and down, while in the configuration (2), the disk is gripped from both sides by arm members, etc. In some cases, the disk was transferred along with the displacement of the arm member.

Problems to be solved by the invention However, in the case of the conventional disk transfer mechanism with the above configuration, the disk was simply placed on the disk holder, so vibrations etc. were not applied from the outside. In such a case, the mounting position may be displaced from a predetermined position, making it impossible to carry out proper playback processing, or in the worst case, there is a risk that the disk may come off from the disk holder.

On the other hand, in the case of the above configuration, the disk is gripped by an arm member and the disk is transferred while maintaining this state, resulting in a complicated structure, an increase in the number of parts, and an increase in the size of the mechanism. The dot was hot.

The present invention was created in view of the above points, and it is an object of the present invention to provide a disk transfer mechanism that can easily and reliably hold and transfer a disk.

Means for Solving the Problems In order to solve the above problems, in the present invention, the disk transfer mechanism is composed of a disk holder, a disk clamper, and a double-acting cam.

The disk holder has a clamp base that engages with the central hole of the disk, and is configured to be movable over the transfer range of the disk.

Only one disk clamper is displaceably attached to the disk holder, and is displaced to lock the disk on the clamp base to the disk holder, and is also displaced as the disk holder is displaced.

The double-acting cam has a first cam connected to the disk holder.
The second cam unit connected to the cam part and the disc clamper
The cam portion is rotatably driven by the drive means to displace the disk holder over the transfer range, and also displaces the disk clamper to lock the disk when transferring the disk, and also displaces the disk clamper to lock the disk when the disk is removed. Displace the disk clamper to release the lock.

Function By configuring the disk transfer mechanism as described above, the disk is securely held by one disk clamper, and the disk holder and disk clamper are collectively driven by a double-acting cam, which simplifies the structure. In addition to being able to achieve
Drive timing can be determined appropriately.

Embodiments Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a disk transfer mechanism 1 (hereinafter simply referred to as transfer mechanism), which is an embodiment of the present invention. The transfer mechanism 1 is, for example, disclosed in Japanese Patent Application No. 62-94750 (Japanese Unexamined Patent Application Publication No. 63-1988), which was previously proposed by the present applicant.
It can be applied to the caseless mechanism section shown in "Disc-shaped information recording medium automatic selection recording/reproduction device" (No. 259865).

The transfer mechanism 1 generally includes a disk holder 2, a disk clamper 3, a double-acting cam 4, first to third lever members, and the like. In addition, each of the above components is attached and fixed to a hanging board 8,
As will be described later, the disk 9 (shown in FIG. 5, etc.) is transferred by the transfer mechanism 1 in the directions of arrows A ₁ and A ₂ in the figure while maintaining a state parallel to the substrate 8. still,
Figure 1 shows the standby state before startup (hereinafter,
The position of each component in the standby state is called the initial position).

The disk holder 2 protrudes through a clamp base 11 having a flange 10 protruding from the surface of the substrate 8 (the arrow A ₁ side in the figure of the substrate 8 is referred to as the front surface, and the arrow A ₂ side is referred to as the back surface) and the back surface of the substrate 8. The slider 12 is made up of a slider 12. Flange 10, clamp stand 11 and slider 12
are integrally constructed, and the slider 12 has guides 13A ₁ and A ₂ attached to the back surface of the board 8.
It is held slidably in the direction. Further, a pin 14 is implanted at the end of the slider 12 in the _A2 direction, and this pin 14 protrudes from a long hole 15 formed in the guide 13. Therefore, the disk holder 2 can move in the A ₁ and A ₂ directions while being guided and held by the guide 13 .

The disk clamper 3 is composed of arm parts 16 and 17, and is rotatably supported on a holder part 18 formed on the back side of the clamp base 11 by a pin 19. A clamp claw 20 is provided at the end of the arm portion 16 in the _A1 direction, while a clamp claw 20 is provided at the end of the arm portion 17 in the _A2 direction. The elongated hole 21 that existed previously is now formed.

As shown in FIGS. 2 and 3, the double-acting cam 4 is a cam member with a composite structure in which a grooved cam 22 is provided on the outer periphery and an outcam 23 is provided on the surface facing the substrate 8. Also, the double acting cam 4 is connected to the base plate 8.
It is rotatably attached to the shaft 4a, and is configured to rotate in the direction shown by arrow J in FIG. 3 about a shaft 4a by a driving means (not shown). Note that the grooved cam 22 has a cam shape as shown in FIG.

The first lever member 5 is a rod-shaped member whose one end is rotatably supported by a pin 25 implanted in a holder 24 provided on the back surface of the substrate 8 . Also,
A long hole 26 is provided at the other end, and the pin 14 implanted in the slider 12 described above is engaged with this long hole 26 . A roller 27 is attached to the first lever member 5, and the roller 27 engages with a grooved cam 22 formed on the double acting cam 4. Therefore, as the double-acting cam 4 rotates, the grooved cam 22
Due to the relative displacement of the first lever member 5, the pin 2
The slider 12 swings around centering on the slider 12.
is biased in the directions of arrows A ₁ and A ₂ in the figure.

The second lever member 6 is attached to the substrate 8 so as to be movable in the vertical direction (in the direction of arrows B ₁ and B ₂ in the figure), and a pin 28 implanted in the third lever member 7 is pressed into contact with the second lever member 6 . There is. Also, the second lever member 6
A pin 29 is also implanted in the disk clamper 3, and this pin 29 engages with a long hole 21 formed in the arm portion 17 of the disk clamper 3.

The third lever member 7 is rotatably supported by a support shaft 30, and is provided with an engagement pin 31 on the upper portion thereof that abuts and engages with the output cam 23 of the double-acting cam 4. This third lever member 7 is configured so that the engagement pin 31 is always pressed against the outcome cam 23 by a biasing means (not shown). Therefore, the double-acting cam 4 rotates, and the distance from the rotation center to the outer periphery of the outcome changes, so that the third lever member 7 swings about the support shaft 30, and accordingly the pin 2
8, the second lever members 6B ₁ and 6B ₂ move up and down in the direction, and the disc clamper 3 is rotated about the pin 19.

Next, the operation of the transfer mechanism 1 having the above structure will be explained in relation to the rotation angle of the double-acting cam 4 with reference to FIGS. 3 and 4. The following explanation will be based on the disk holder 2 starting from the initial position shown in FIG.
This is an explanation of the operation from moving in the _A1 direction, clamping the disk 9, and returning to the initial position again.

When the double-acting cam 4 rotates in the direction shown by arrow J in FIGS. 3 and 4 from the initial position shown in FIG. The outcome 23 does not change its distance from the center of rotation. Therefore, the first lever member 5 rotates counterclockwise around the pin 25, and the slider 12 is accordingly urged in the same direction, and the disk holder 2 moves in the _A1 direction. On the other hand, the third lever member 7 is not displaced, and therefore the disc clamper 3
maintains its initial position. Further, the disk clamper 3 is displaced in the _A1 direction together with the disk holder 2, and the arm portion 17 is formed with a long hole 21 similar to the long hole 15 formed along the extending direction of the guide 13. Pin 29 of lever member 6 of No. 2
are relatively displaced within this elongated hole 21. Therefore, the disk clamper 3 can be displaced in the _A1 direction, and the second lever member 6 is not displaced and therefore maintains its initial position.

Then, the clamp table 11 is inserted into the central hole 9a of the disk 9, which is held by another mechanism (not shown), with the rotation angle reaching approximately 150 degrees. This state is shown in FIG. At this time, the disk holder 2 is displaced by a distance indicated by an arrow L in the figure.
can be adjusted by appropriately selecting the relative displacement amount of the grooved cam 22 (that is, the displacement amount with respect to the axial direction), the arrangement positions of the pin 14 and the roller 27 in the first lever member 5, and the like.

When the double-acting cam 4 further rotates, the rotation angle is 150°~
During the 210° period, the grooved cam 22 is not displaced, and therefore the disk holder 2 maintains the state shown in FIG. On the other hand, the outcome 23 displaces the distance from the center of rotation within a rotation angle of 165° to 159°. Therefore, the third lever member 7 rotates around the support shaft 30, and this rotation biases the second lever member 6 in the _B1 direction via the pin 28. By the way, pin 2
9 presses the arm portion 17 in the _B1 direction, the disk clamper 3 rotates counterclockwise about the pin 19, and the clamp claw 20 comes into contact with the disk 9. This state is shown in FIG. As shown in the figure, the disk clamper 3 is rotated and the clamp claw 20 presses the disk 9 toward the flange 10, so that the disk 9 is securely locked and held by the disk holder 2.

Furthermore, the double-acting cam 4 rotates, and the rotation angle is 210° to 330°.
During this period, the grooved cam 22 has the above-mentioned rotation angle of 30° to 150°.
Since the disk holder 2 is relatively displaced in a state opposite to that between the two, the disk holder 2 is displaced in the _A2 direction. On the other hand, at the above rotation angle, the distance from the rotation center of the outcome 23 does not change, and therefore the disk clamper 3 maintains the state in which the disk 9 is held on the disk holder 2. Therefore, in the process of transferring the disk 9 from the state shown in FIG. 6 to the initial position, the disk 9 is moved by one disk clamper 3.
Since the disk 9 is securely and easily locked and held by the disk holder 2, the disk 9 does not shift or come off from the disk holder 2, and highly reliable transfer can be achieved.

Further, as the rotation progresses further, the engagement pin 31, The disc clamper 3 is rotated clockwise around the pin 19 via the second and third lever members 6, 7, etc.
Return to the initial position shown in FIG.

In the above embodiment, the transfer of the disk 9 is stopped when the disk holder ₂ returns to the initial position, but the structure is not limited to this. A configuration may be adopted in which the clamp base 11 is completely removed from the clamp base 9a (at this time, the disk 9 needs to be held by some kind of holding means). By using the transfer mechanism of this configuration in the caseless mechanism section shown in the above-mentioned Japanese Patent Application No. 62-94750 "Disk-shaped information recording medium automatic selection recording/reproduction device", the disk storage mechanism section can be moved from the caseless mechanism section to the caseless mechanism section. The disk can be easily transferred to the clamp mechanism section or the like.

Effects of the invention As mentioned above, according to the transfer mechanism of the present invention,
Since the disk can be reliably locked and held in the disk holder by a single disk clamper, it is a highly reliable disk that can reliably prevent accidents such as the disk shifting from the disk holder or coming off during transportation. It is possible to realize the transfer of
Furthermore, since the disk clamper and the disk holder are collectively driven by a double-acting cam, the present invention has the advantage that the structure can be simplified and the drive timing can be adjusted appropriately.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of an embodiment of the transfer mechanism according to the present invention, Fig. 2 is a side view of the double-acting cam, Fig. 3 is a front view of the double-acting cam, and Fig. 4 is the cam line of the double-acting cam. 5 to 7 are diagrams for explaining the operation of the transfer mechanism. 1... Transfer mechanism, 2... Disk holder, 3...
...Disk clamper, 4...Double acting cam, 5...First lever member, 6...Second lever member, 7...
...Third lever member, 8... Board, 9... Disc, 10... Flange, 11... Clamp stand, 12...
... Slider, 13 ... Guide, 18 ... Holder part, 20 ... Clamp claw, 22 ... Groove cam, 23
... Outcome, 27 ... Roller, 31 ... Engagement pin.

Claims (1)

[Claims for Utility Model Registration] A disk holder having a clamp base that engages with the center hole of the disk and is movable over the transfer range of the disk; a single disk clamper that is displaced and locks the disk on the clamp base to the disk holder, and that is displaced in accordance with the displacement of the disk holder; and a first cam portion connected to the disk holder. and a second cam portion connected to the disk clamper, which is rotationally driven by a driving means to displace the disk holder over the transfer range,
and a double-acting cam that displaces the disk clamper to lock the disk when the disk is transferred and displaces the disk clamper to release the lock when the disk is removed. mechanism.