JPH0535471Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disk loading device that transports and loads a disk into a disk loading section provided in a disk player to chuck and rotationally drive the disk.

[Summary of the idea]

The present invention provides a disk device comprising a disk table provided with a first magnetic coupling member and a centering member, and a second magnetic coupling member provided on a tracking arm and coupled to the first magnetic coupling member. , a pair of rollers consisting of an upper roller and a fixed roller placed on a movable arm that clamps and conveys a disk on a disk table, and a rotating arm that is provided with a stopper that regulates the position of the disk that is conveyed by this roller. and a loading device consisting of the above-mentioned chucking arm, a pair of rollers, and an elevating frame on which the rotating arm is placed, and the disk is transported by the pair of rollers and positioned on the disk table. In this state, the elevating frame is lowered, and after being sandwiched between the first and second magnetic coupling members, the movable arm having the upper roller is rotated by lowering the elevating frame, and the rotary arm is also rotated to place the disc on the disk table. By leaving the placed disk in a free state, the disk can be self-aligned even if it is not fully centered with respect to the disk table, which prevents chucking mistakes, and also prevents chucking errors when installed vertically. This also enabled automatic tracking.

[Conventional technology]

Some disc players are configured so that the disc is automatically drawn in by a disc loading mechanism and transferred to a disc loading section that is rotationally driven. There is a roller type.

This guide roller type disk loading device is constructed as shown in FIG. A disk table 1 that rotationally drives a disk D includes a disk-shaped magnetic coupling member 2 in the center and this magnetic coupling member 2.
A centering member 4, which is slidably inserted into the disk via a spring 3 and has an outer diameter gradually increasing in the disk mounting direction, is provided to center the disk. This disk table 1
is fixed to the rotating shaft 5 in the magnetic coupling body 2.

Corresponding to the disk table 1, a magnetic coupling member (hereinafter referred to as a chucking member) 7 having a magnet 6 is attached to an elevating frame 8 so as to be movable up and down and swingable. That is, this chucking member 7 has flanges 7a and 7b on the upper and lower surfaces, respectively.
A magnet 6 is built in between the frames 7a and 7b, and is loosely inserted into a through hole 8a formed in the elevating frame 8, and its sliding causes the upper and lower flanges 7a and 7b to move against the upper and lower surfaces of the frame, respectively. It is made to come into contact with.

The chucking member 7 is rotatably supported by a shaft 9 on a pair of bearing pieces 8b provided oppositely to the elevating frame 8, and has a rotary arm 11 which is rotatably biased by a spring 10 so that the tip thereof is always raised. The upper flange 7a is engaged with the tip portion 11a and is constantly raised. A pair of disk positioning stoppers 12 are provided protruding from the lower surface of the rear end of the rotating arm 11.

In this way, a loading device is constructed by providing a transport roller 13 consisting of a pair of upper and lower rollers 13a and 13b on the front side of the elevating frame 8 to which the chucking member 7 corresponding to the disk table 1 is attached. In this conveyance roller 13, a lower roller 13b as a fixed roller is directly supported by the lifting frame 8, and an upper roller 13a is supported by the free end of a movable arm 14 which is supported by the lifting frame 8. The front end of the sliding arm 15 is pivotally attached to the pivot support. The rear end portion of the sliding arm 15 is engaged with the lifting frame 8 so as to be able to slide and tilt in the front-back direction, and a tension spring 16 is stretched between the intermediate portion and the lifting frame 8. 15, a biasing force is applied to constantly rotate it downward. Further, the upper roller 13a, which is pivotally supported by the movable arm 14, is driven in both forward and reverse directions by a rotating mechanism.

In the disk loading device configured as described above, when the elevating frame 8 is raised, the disk D is moved between the upper and lower rollers 1 of the conveying roller 13.
When inserted between 3a and 13b, the upper roller 13a
is conveyed to the lower side of the lifting frame 8 by the rotational drive in the feeding direction of
At the same time as the rotation of 3a is stopped, the disk D is positioned and its rear edge side is held by the conveyance rollers 13 with its center hole d corresponding to the chucking member 7.

In this state, when the elevating frame 8 descends and approaches the disk table 1, the chucking member 7 first moves the built-in magnet 6 onto the disk table 1.
The magnetic coupling member 2 is moved downward by an attractive magnetic force to the magnetic coupling member 2, and the disk D is pressed from above by the lower flange 7b.

Next, when the upper roller 13a of the conveyance roller 13 is moved upward by the rotation against the biasing force of the tension spring 16 via the sliding arm 15 of the movable arm 14, and the upper and lower rollers 13a and 13b are opened, immediately after that, the disk D becomes free and placed on the disk table 1. At this time, the tracking member 7
Due to the magnetic force, the gravity, and the lower flange 7b, the center hole d of the disk D is fitted into the center of the disk table 1, that is, the centering member 4, and the disk D is connected to the chucking member on the side of the disk table 1 and the lifting frame 8. 7 holds the pressure (chucking)
The disc is rotated by the disc table 1 and played back (played).

[Problem that the invention attempts to solve]

In the disk loading device configured as described above, when chucking the disk D onto the disk table 1, as shown in FIG. The chucking member 7 is moved down, and its lower flange 7b holds the disc D in a state shifted from the center hole d as shown in FIG. It turns out.

Therefore, as shown in FIG. Due to the rotational drive, there was a problem that the optical pickup could not focus and playback became impossible.

In particular, when this disk loading device is used vertically, as shown in FIG. When the rotating arm 11 is rotated so that the chucking member 7 comes into contact with the disk D, the positioning stopper 12 is separated from the disk D and the conveyance roller 13 is opened, so that the disk D becomes free and is always moved downward by its gravity. It will shift to This deviation is corrected by the tracking member 7, but in this case, since the direction of the magnetic force of the tracking member 7 is different from the direction of gravity of the disk D, the centering force is smaller than when the device is placed horizontally. Therefore, when this device is installed vertically, various adverse conditions overlap, and the disk table 1 of disk D mentioned above
The problem of being chucked with incomplete centering is likely to occur.

In view of these points, the present invention has a disk loading system that has a simple structure and allows accurate centering and tracking of the disk with respect to the disk table at all times, and in particular allows accurate centering and tracking even when the device is placed vertically. The purpose is to provide equipment.

[Means for solving problems]

In order to solve the above-mentioned problems, the disk loading device according to the present invention will be described based on the embodiment shown in the drawings. In order to center the first magnetic coupling member 2 and the disk, the disk loading device according to the present invention will be described. A disk table 1 provided with a centering member 4 formed with a large diameter, and a spring 23
In a disk device, a second magnetic coupling member 7 is coupled to a first magnetic coupling member 2 provided on a chucking arm 22 which is rotated back at A pair of rollers 13 consisting of an upper roller 13a and a fixed roller 13b placed on a movable arm 14 for pinching and conveying the disc, and a pair of stoppers 12 for regulating the position of the disk conveyed by the roller 13 are provided. The loading device includes a rotating arm 21, a chucking arm 22, a pair of rollers 13, and an elevating frame 8 on which the rotating arm 21 is placed.

[Effect]

With this configuration, the inserted disk is held and conveyed by a pair of rollers 13 mounted on the elevating frame 8, and is positioned above the disk table 1 by a pair of stoppers 12, 12 of the rotating arm 21. In this state, the elevating frame 8 is lowered, and after the disk is magnetically sandwiched between the first and second magnetic coupling members 2 and 7, the movable arm 14 having the upper roller 13a is rotated by lowering the elevating frame 8. At the same time, the tracking arm 22 is rotated via the rotation arm 21 to free the disk placed on the disk table 1, so that the disk is connected to the first and second magnetic coupling members 2.
The centering is automatically performed by the impact caused by the attachment and detachment of the discs 7 and 7, and the disc 7 is centered and chucked onto the disk table 1.

〔Example〕

Hereinafter, an embodiment of the disk loading device according to the present invention will be described with reference to FIGS. 1 to 4. The same members as those in the conventional example described above will be designated by the same reference numerals, and a detailed explanation will be provided. is omitted.

In this example, the rotating arm 21, which is supported by a shaft 9 on a pair of bearing pieces 8b opposite to each other on the lifting frame 8, is not engaged with the second magnetic coupling member (hereinafter referred to as chucking member) 7. , a pair of disc positioning stoppers 12, 12 for positioning and supporting the disc D are protrudingly provided at the rear, and an engaging piece 2 is provided.
1a is formed as an extension, and this rotating arm 21
is also rotationally biased by a spring 10 as in the conventional example.

A shaft 9 on which this rotating arm 21 is supported
A chucking arm 22 is pivotally supported by the chucking arm 22, the distal end portion 22a of which is engaged with the upper flange 7a of the chucking member 7, and the rear portion 22b of which abuts on the rotating arm 21. This chucking arm 22 is located between a locking piece 22c formed rearwardly from the shaft support and a locking piece 8c protruding from the rear of the lifting frame 8. Spring 2 has a smaller force than Spring 10 which rotationally biases the
3 is stretched, and its tip 22a is rotated and biased so as to constantly lift the chucking member 7.

In addition, in this example, on the mechanical chassis side, a locking arm 24 is provided on which a sliding arm 15 that rotates a movable arm 14 on which an upper roller 13a of a conveyance roller 13 is pivoted comes into contact and is locked when the lifting frame 8 is lowered.
is formed lower than that of the conventional example, and a push-up piece 25 is provided in a protruding manner corresponding to the engaging piece 21a of the rotating arm 21.

Next, the operation of the apparatus of this example configured as described above will be explained.

First, when the elevating frame 8 is in the raised state, the disk D is moved by the upper and lower rollers 13a, 1 of the conveying roller 13.
3b, the upper roller 13a is rotated in the feeding direction by the drive mechanism 26, and is conveyed to the lower side of the lifting frame 8, as in the conventional example described above, and its leading edge touches the positioning stopper 12 of the rotating arm 21. , 12, the rotation of the upper roller 13a is stopped, and the disk D is positioned so that the rear edge side thereof is held by the conveying roller 13 with the center hole d corresponding to the chucking member 7.

In this state, when the elevating frame 8 descends and approaches the disk table 1, the chucking member 7 is biased by the spring 23 of the chucking arm 22 due to the attractive magnetic force against the magnetic coupling member 2 of the disk table 1, as shown in FIG. 3B. The lower flange 7b moves downward against the force, and the lower flange 7b comes into contact with the disk D. In this state, the lowering of the elevating frame 8 causes the disk D to move downward.
from above and press it onto the disk table 1. (Status shown in Figure 4A).

However, in this state, the conveyance roller 13 that clamps the rear edge side of the disk D does not open and continues to hold the disk D, and in this state, the elevating frame 8 further descends. Therefore, the disk D tilts with respect to the disk table 1, as shown in FIG. 4B, and lifts one side of the chucking member 7, which is attracted to the disk table 1. Immediately after this, the sliding arm 15 contacts and locks the locking arm 24, the movable arm 14 rotates in the raising direction, the upper roller 13a moves upward, and the conveying roller 13 opens as shown in FIG. Then, the hold on disk D is released.

By this operation, the chucking member 7 is again attracted toward the disk table 1 and presses the disk D against the disk table 1. In this way, the disk D is chucked by the movement of the chucking member 7 to and from the disk table 1.

Therefore, even if the disk D is not centered with respect to the centering member 4 of the disk table 1 when it is lowered and the centering (centering) is incomplete, it will be automatically adjusted due to the impact of the attachment/detachment operation of the tracking member 7 to the disk table 1. After being centered, the center hole d of the disk D is accurately fitted into the centering member 4, and the disk D is reliably chucked on the disk table 1 in a perfectly centered state.

In this state, the engaging piece 21a of the rotating arm 21 is pushed up by the pushing-up piece 25, and the rotating arm 21 is rotated against the biasing force of the spring 10, so that the positioning stopper 1
2 and 12 are separated from the leading edge of the disk D, the disk D becomes rotatable, and the disk table 1
The playback (performance) is performed by rotationally driving the drum.

Furthermore, when the device is used vertically, the direction of the attracting magnetic force of the chucking member 7 with respect to the disk table 1 is different from the direction of gravity of the disc D, as in the conventional example described above, but in this example, the chucking member 7 is placed upward. The chucking arm 22 for biasing the positioning arm 22 and the rotating arm 21 on which the positioning stoppers 12, 12 are protruded are formed as separate members,
By making the force of the biasing spring 23 of the chucking arm 22 smaller than the force of the biasing spring 10 of the rotary arm 21, the chucking member 7 can be moved while the disc D is held by the positioning stops 12, 12 of the rotary arm 21. is attracted by the disk table 1 and comes into contact with and presses the disk D, and then, as described above, the rotating arm 21 is rotated against the biasing force of the spring 10 via the engagement piece 21a, and the positioning stoppers 12, 12 are rotated. is separated from the disc D, but since the disc D is held down by the chucking member 7, it does not shift with respect to the disc table 1, and the disc D is reliably chucked in a perfectly centered state by the above-mentioned attachment/detachment operation of the chucking member 7. Ru.

In this example, disk table 1
Even when the upper surface of the centering member 4 is flat, mischucking of the disk D can be reduced, and automatic chucking is possible even when placed vertically.

Although one embodiment of the present invention has been described above, the present invention is not limited to the illustrated embodiment, and can be modified in various ways without departing from the spirit of the present invention.

For example, in the embodiment, the magnet 6 is built into the chucking member 7, but the magnet 6 may be built into the turntable 1 side.
0 and 23, it is also possible to use torsion coil springs for the shaft supports of the rotating arm 21 and the chucking arm 22 without using the tension coil springs shown in the drawings. It is something that can be changed and shaped.

[Effect of idea]

As described above, according to the present invention, even if the disk is not fully centered with respect to the disk table, it is possible to automatically align the disk, thereby preventing chuck errors, and especially when the disk is placed vertically, the disk can be automatically aligned. This enables reliable playback (performance) of the disc at all times.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the disk loading device according to the present invention, Fig. 2 is a plan view of the same, and Fig. 3 A and B.
2 is a vertical sectional side view of the main part, A shows the loading operation state, and B shows the chucking operation state. FIG. 4 is an explanatory diagram of the operation of the device of the present invention, FIG. 5 is a longitudinal sectional side view of a conventional disk loading device, and FIG. 6 is an explanatory diagram of the operation of the conventional device. In the figure, 1 is a disk table, 2 is a first magnetic coupling member, 4 is a centering member, 7 is a tracking member as a second magnetic coupling member, 8 is a lift frame, 12 is a stopper, 13 [13a, 13b]
14 is a movable arm, 21 is a rotating arm, 22 is a chucking arm, and 23 is a spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A disk table provided with a first magnetic coupling member and a centering member whose diameter gradually increases in the disk mounting direction for centering the disk, and a spring. In a disk device comprising a second magnetic coupling member provided on a chucking arm that can be rotated back and coupled to the first magnetic coupling member, the disk is held and conveyed on the disk table. a pair of rollers consisting of an upper roller and a fixed roller placed on a movable arm, a rotating arm provided with a pair of stoppers for regulating the position of the disk conveyed by the rollers, and the chucking arm; The device further includes a loading device comprising the pair of rollers and an elevating frame on which the rotary arm is placed, and the inserted disk is conveyed while being held between the pair of rollers and positioned on the disk table by the stopper. In this state, the lifting frame is lowered, and after the disk is magnetically sandwiched between the first and second magnetic coupling members, the rotating arm having the upper roller is rotated by lowering the lifting frame. A disk loading device that rotates the rotating arm to free a disk placed on the disk table.