JPS6159658A - Disc loading mechanism - Google Patents

Abstract

PURPOSE:To make a device thin and hold a disc till the last moment of attachment and detachment to prevent the damage by providing a clamper on a freely slidable carrier and setting the disc with a vertically movable container. CONSTITUTION:A carrier 11 which is supported freely slidably with respect to a housing 12 is provided with a container cam 13 which can be slid freely to right and left side parts of the carrier 1, a holder 15 supported freely rotatably on a connection rod, a clamper 17 supported freely rotatably in the approximate center of the holder 15, and a container 19 which is supported freely vertically movably with respect to the carrier 11. The cam 13 is slid relatively and is clamped by the clamper 17 when the carrier 11 is pulled out from the housing and is stopped there, and the cam 13 is slid together with the carrier 11 as one body; and when the carrier 11 is stored in the housing and is stopped in the stop position, the cam 13 is slid relatively to move the container 19 downward, and the clamping operation of the clamp 17 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc loading mechanism for loading discs in video disc players, digital audio disc players, and the like.

[Conventional technology]

A conventional disc recording/reproducing apparatus has a configuration as shown in FIG. 5, for example. Reference numeral 1 denotes a carry that is slidably provided in the housing 2, and a disc 3 can be placed thereon at a position pulled out from the housing 2 and housed in the housing 2. A clamper 5 rotatably supported by a holder 4 is provided inside the casing 2, and is configured to clamp the disk 3 onto a turntable 7 rotated by a motor 6. , 8 is the disc 3 protruding from the turntable 7
It is a hub that fits into the center hole of. 9 is a pink-up operation in which the disc 3 is irradiated with a laser beam or the like to record and reproduce information.

[Problem that the invention seeks to solve]

In such a conventional device, the clamper 5 for clamping the disk 3 is supported inside the casing 2, which increases the height of the casing 2, making it difficult to make the entire device thin. That is, in order to fit the center hole of the disk 3 into the hub 8 protruding from the turntable 7, the disk 3 must be moved at least above the top surface of the hub 8, and then lowered and placed on the turntable 7. It is necessary to place

For this purpose, it is necessary to keep the position of the clamper 5 considerably higher than the top surface of the hub 8 when it is not clamped so as not to interfere with the movement of the disk 3.

The height of the casing 2 had to be increased.

[Means for solving problems]

1 to 4 show the basic configuration of the present invention. Reference numeral 11 denotes a carry that is slidably supported in the casing 12, and has a position where it is housed in the casing 12 and a position where the casing 12
It is designed so that it can take a position where it is pulled out from the outside. 1
Reference numeral 3 designates two container cams that are slidably provided on the left and right sides of the carry 11. A relatively short rack 13a is provided at a part of the upper part of the container cam 3, and a roughly short rack 13a is provided at the lower part of at least one of the two container cams. The rack 13b is relatively long over its entire length.
are provided for each. Further, on the side surface of the container cam 13, a guide portion 13C113d consisting of a groove or a hole having two parallel portions and an inclined portion connecting therebetween is provided at the front and rear, and a recess 13C is provided on the relatively rear inner surface.
e is provided. Reference numeral 14 denotes a connecting rod whose both ends are supported by the carrier 11, and a gear 14a that meshes with the rack 13a is rotatably supported near the end of the surface thereof. A pin 14b is integrally provided on the gear 14a. A holder 615 is rotatably supported at both ends by the connecting rod 14. Both end side parts 15a of the holder 15
is provided with a guide portion 15b consisting of an approximately annular (approximately C-shaped) groove or hole centered around the connection rl 114, into which the pin 14b of the gear 14a is inserted and guided. (See Figure 3). Reference numeral 16 denotes a click spring whose one end is locked to the carry 11 and which constantly biases the holder 15 downward. 17 is holder 1
This is a clamper rotatably supported approximately at the center of 5.

Reference numeral 18 denotes a drive unit fixed inside the casing 12 and consisting of a motor, a speed reduction mechanism, and the like.

Some of the gears in the reducer groove mesh with the rack 13b.

Reference numeral 19 denotes a container, which is supported by the carrier 11 so as to be able to move up and down. Two protrusions 19a are provided on each side of the container, and the container is inserted and guided by guide parts 13c and 13d, respectively. It has become. 20 is rotatably supported by the carry 11 at one end, and has a recess 13e of the container cam 13 and two recesses 12a provided in the casing 12 at the other end.
, 12b are lock switching gutter grooves in which engaging portions 20a that can be switched and engaged with each other are formed. Reference numeral 21 denotes a spring stretched between the carry 11 and the date and time switching mechanism 20 so as to bias it counterclockwise.

Reference numeral 22 denotes stoppers fixed to the housing 12 that determine the positions of both ends of the sliding movement of the carry 11.

Other motor 6, rotated by motor 6, disk 3
a turntable 7 on which it is placed during performance; a hub 8 that fits into the center hole of the disc 3; The pickup 9, which is movable in the disk radial direction, is the same as that shown in FIG. 5, so a detailed description thereof will be omitted.

[Function] Next, we will explain the action 6 When you operate the ejectors (not shown) when starting a performance, the drive unit 18 is energized and the rack 1
The container cams (the left and right container cams, as they are mutually connected by the connecting rod 14) 13 move to the left in the figure via the connector 3b, and the carry 11 is pulled out from the housing 12 in conjunction with the container cams 13.

In this position, the disk 3 is placed in the container 19''2. In this case, the engaging portion 20a of the lock switching device 20 is engaged with the recess 12b of the housing 12.

In FIG. 4, the protrusion 19a of the container cam 19 (c)
). Further, the pin 14b of the gear 14a is in the position (i) in FIG.

Therefore, the clamper 17 moves upward against the biasing force of the spring 16, so that there is no problem in attaching and detaching the disk 3 to and from the container 19.

When a play start button (not shown) is operated, the drive unit 18 moves the container cam 13 inward of the housing 12 via the rack 13b. At this time, the engaging portion 2 of the lock switching mechanism 20
Since 0a is engaged with the recess 12b of the housing 12, the carry 11 remains stopped. When the container cam 13 moves, the gear 14a rotates counterclockwise via the rack 13a, so that the pin 14b in FIG.
Rotate from the position ( ) to the position (g). Therefore, due to the biasing force of the spring 16, the holder 15 and the clamper 17
descends, presses the disk 3 placed on the container 19 from above, and clamps it.

During this time, the protrusion 19a moves the upper parallel part of the guide part 13c (13d) from the position (c) in FIG. 4 to the position (b).
Move to the position. However, the container 19 is movable only in the vertical direction with respect to the carry 11, and does not move in the horizontal direction.

When the container cam 13 reaches the position shown in FIG. 1 and FIG. Separate from 12b, container cam 1
It engages with the recess 13e of No.3. As a result, the carry 11 and the container cam 13 slide integrally toward the inside of the housing 12.

When the carry 11 and the container cam 13 slide together and the container cam 13 reaches the position (a) shown in FIGS. 1 and 2, the carry 11 comes into contact with the stopper 22 and stops, and the container cam 13 As the engaging portion 20a is further advanced by the driving portion 18, the engaging portion 20a is pushed out of the recess 13e against the spring 21 and engaged with the recess 12a.

After that, only the container cam 13 slides.

The container cam 13 is further shown in FIGS. 1 and 2 (
When sliding to position a), guide parts 13c, 13
Since the inclined portion d pushes down the projection 19a, the projection 19a moves from the position (b) to the position (a) in FIG. 4. As a result, the container 19 descends relative to the carry 11, so the disc 3 descends together with the container 19 while being pressed by the clamper 17, and the turntable 7
placed on top and clamped. During this time, the gear 14a rotates counterclockwise, and the pin 14b is rotated as shown in FIG.
Since the holder 15 moves within the guide portion 15b from the position to the (force) position, further rotation of the holder 15 in the counterclockwise direction is not prevented.

Further, the motor 6 starts rotating (or may have already started rotating), the pickup 9 is moved in the radial direction of the disk, and recording or reproduction of information is started.

Next, when the eject button is operated, the rotation of the motor 6 is stopped and the drive unit 18 is activated.

The container cam 13 is slid to the outside of the housing 12 via the rack 13b, and moves from the position (A) to the position (B) in FIGS. 1 and 2.

During this time, the gear 1 is connected via the rack 13a of the container cam 13.
4a rotates clockwise, so in Fig. 4, pin 1
4b rotates from the (force) position to the (ki) position. On the other hand, the engaging portion 20a of the lock switching mechanism 20 is connected to the housing 1.
2, the carry 11 remains stopped.

Therefore, the inclined portions of the guide portions 13c and 13d of the container cam 13 push up and move the protrusion 19a from the position (a) to the position (b) in FIG. 4. As a result, the disk 3 placed on the container 19 is pushed upward while being held between the container 19 and the clamper 17 which is biased by the spring 16, and is positioned above the hub 8.

When the container cam 13 reaches the position (a) in FIGS. 1 and 2, the spring 21 operates in conjunction with the sliding movement of the container cam 13, and the lock switching mechanism 20
is switched, and the engaging portion 20a is connected to the recess 12a of the housing 12.
and engages with the recess 13e of the container cam 13.

Therefore, while the container cam 13 further slides and moves from the position (A) to the position (X) in FIGS. 1 and 2, the carry 11 and the container cam 13 move integrally. Therefore, during this period, the gear 14a does not rotate, and the pin 14b remains in the position (g) in FIG. 3.゛When the container cam 13 reaches the position (1) in Figs. 1 and 2, the carry 11 comes into contact with the stopper 22 and stops, and the container cam 13 is further advanced by the drive unit 18 to activate the lock switching mechanism. Switch 20,
The engaging portion 20a is pushed out from the recess 13e of the container cam 13 and engaged with the recess 12b of the housing 12. As a result, from then on, only the container cam 13 slides.

When the container cam 13 further slides from the position (1) in FIGS. 1 and 2 to the position (1), the protrusion 19a of the container 19 moves from the position (b) to the position (c) in FIG. Move to.

Since the gear 14a rotates clockwise via the rack 13a of the container cam 13, the pin 14b rotates from the position (K) to the position (R) in FIG. 4. pin 14
Since point b has already reached the end of the guide portion 15b, the holder 15 is eventually rotated clockwise against the biasing force of the spring 16, and the clamper 17 is largely separated from the disk 3.
The disk 3 can be attached and detached.

[Effects] As described above, in the present invention, the clamper is provided on the member that slides with respect to the casing, and the clamping action of the clamper is released when the member is pulled out from the casing and stopped. , the height of the device can be reduced. In addition, since the disk is clamped not only during sliding but also just before being removed and removed, there is little risk of damage to the disk.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the disc loading mechanism of the present invention;
FIG. 2 is a front view of the device, FIGS. 3 and 4 are schematic diagrams for explaining its operation, and FIG. 5 is a front view of the conventional device. 1.11...Carry 2.12...Casing 3...
・Disk 5.17... Clamper 6... Motor 7... Turntable 8... Hub 9...
Pickup 13... Container cam 14... Connecting rod 15... Holder 16... Click spring 18... Drive section 19... Container 20... Lock switching mechanism 21... Spring 22...・Patent over stopper Roganjin Pioneer Co., Ltd.

Claims (3)

[Claims] (1) A first means that is slidably supported with respect to a casing and can take a position housed in the casing and a pulled out position in which a disk can be attached and detached; a second means supported vertically movably on which the disk is placed; a third means for clamping the disk;
and a fourth means slidably supported with respect to the means, the fourth means sliding relative to the first means when the first means is stopped at the pulled out position. The third means is caused to perform a clamping operation, and when the first means slides integrally with the first means and comes to a position where the first means is housed in the housing and stops, the first means slides relative to the first means. A disk loading mechanism characterized by moving the means of item 2 up and down. (2) A patent claim characterized in that a means is provided between the first means and the casing to lock the first means to the casing and stop it at a predetermined position. Disc loading mechanism in the first range. (3) Between the first means and the fourth means, the first means
Claim 1 or Claim 1, characterized in that means is provided for locking the means and the fourth means so that they can integrally slide relative to the housing. 2. Disk loading mechanism.