JPH0437330Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is based on the following method: After pulling a recording medium, such as an optical disk, horizontally into the player body using a disk tray, the disk is rotated inside the player body. This invention relates to a disk player that is mounted on a table.

[Summary of the idea]

This invention is used in a disk player in which a recording medium, such as an optical disk, is drawn horizontally into the player body using a disk tray, and then the disk is mounted on a turntable inside the player body. By using a double-speed mechanism for horizontal movement of the disk tray, and by making it possible to lower the disk tray vertically without being restricted in any way by the double-speed mechanism, the structure is extremely simple, yet the depth can be improved. The disk tray can be almost completely pulled out from inside the short player body.

[Conventional technology]

A known example of a disc player according to the applicant of this invention is, for example, Japanese Utility Model Application No. 149255/1983.

This known example uses a speed-doubling mechanism consisting of a fixed rack, a rolling pinion, and a movable rack to horizontally move the disk tray by an amount twice as much as the amount of rolling of the rolling pinion.

According to this known example, it is possible to pull out the disc tray almost completely from within the player main body, which has a short depth, and it is possible to easily attach and remove the disc onto the disc tray.

[Problem that the invention attempts to solve]

However, in this known example, the speed-doubling mechanism restricts the vertical descent of the disc tray, so that the disc tray itself, which has been horizontally retracted into the player body, cannot be vertically lowered as it is.

Therefore, in order to utilize this known double speed mechanism, the disk tray is attached to a tray carrier exclusively for horizontal movement so that it can rise and fall freely, and the tray carrier is driven by the double speed mechanism. It is necessary to adopt a method in which the disk tray is pulled horizontally into the player body, and then the disk tray is lowered vertically relative to the tray carrier.

However, if such a method is adopted,
There is a defect that the structure becomes complicated and the number of parts and assembly man-hours increase.

This device was devised to solve these problems, and uses a double speed mechanism to horizontally move the disk tray, while also allowing the disk tray itself to be moved vertically after being pulled horizontally into the player body. This allows it to descend.

[Means for solving problems]

This invention consists of a fixed rack fixed inside the player body, a trailer rack provided on the disc tray, and a rolling pinion rotatably attached to a trace slider that holds the disc tray and engaged between the two racks. A double speed mechanism is constructed by
By driving the trace slider in the horizontal direction along the horizontal guide of the guide plate by a rack plate driven by a motor, the disk tray is moved horizontally by an amount twice as much as the horizontal movement amount of the trace slider. do. At this time, by arranging the fixed rack and the trailer rack to face each other horizontally and configuring the rolling pinion placed between them as a vertical and wide pinion, the trace slider is moved by the rack plate to the guide plate. When driven horizontally along a vertical guide, the rolling pinion is allowed to slide vertically relative to a fixed rack.

[Effect]

According to this invention, a double speed mechanism is used to move the disk tray horizontally, but when the disk tray is moved vertically, the rolling pinion of the speed double mechanism may slip vertically with respect to the fixed rack. Therefore, the double speed mechanism does not restrict the vertical descent of the disk tray in any way. Therefore, the disk tray itself, which has been horizontally retracted into the player main body, can be lowered vertically as it is without being restricted in any way by the speed-doubling mechanism.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings.

First, an overview of the entire disk player will be explained with reference to FIGS. 4A to 6B.

A turntable 2 and an optical head 3 for recording and reproduction are provided inside the player body 1.
The turntable 2 is directly rotationally driven by a motor 4 attached to its lower part, and the optical head 3 is guided by a pair of guide shafts 5 and horizontally reciprocated along the radial direction of the disk, which will be described later. It is configured as follows.

The disk tray 7 is inserted through a horizontally long front opening 8 provided in the front wall (the left wall in FIG. 4A) 1a of the player main body 1, and is inserted into the horizontal direction of the player main body 1 by arrows a and b. It is configured so that it can be moved in and out in any direction. Top surface 7a of disk tray 7
A circular recess 10 for horizontally positioning and placing a disk 9 such as an optical disk as a recording medium.
is provided. The disk tray 7 is provided with an opening 11 that is horizontally elongated from the central portion of the circular recess 10 to the rear end (the right end in FIG. 4A) and vertically passes through the disk tray 7.

Inside the player body 1, there are a pair of left and right trace sliders 13, a pair of left and right guide plates 14, a pair of left and right rack plates 15, a pair of left and right drive pinions 16, a motor 17, and a pair of left and right double speed mechanisms 1.
8th grade is provided. Note that the double speed mechanism 18 is
a pair of left and right fixing racks 19 integrally provided on the pair of left and right guide plates 14; a pair of left and right trailer racks 20 integrally provided on the disk tray 7;
It is constituted by a pair of left and right rolling pinions 21 rotatably attached to a pair of left and right trace sliders 13 and engaged with both racks 19 and 20. Further, the guide plate 14 is fixed vertically within the player body 1, and both guide plates 14
is provided with a rail-shaped horizontal guide 23 and a pair of front and rear groove-shaped vertical guides 24. Further, both rack plates 15 are attached to both guide plates 14 so as to be freely slidable in the front-rear direction (in the direction of arrows a and b). Further, both drive pinions 16 are connected to both guide plates 14.
It is fixed to both ends of a drive shaft 25 installed horizontally between them, and engaged with a rack 26 integrally provided on the lower surface of both rack plates 15. In addition, the drive shaft 25
is coupled to the motor 17 via a gear train 27. Both trace sliders 13 are connected to both guide plates 14 by a total of four horizontal guide pins 28, a pair of front and rear guide pins 28 provided on both left and right sides respectively.
The guide pins 28 are placed horizontally on both horizontal guides 23, and the tips of these guide pins 28 are engaged with a total of four groove-shaped inclined guides 29, a pair of front and rear grooves provided at both front and rear ends of both rack plates 15. There is. Further, the disk tray 7 is placed horizontally on both trace sliders 13, and these are engaged with each other via a pair of left and right guide grooves 30 and a total of four guide pins 31, one pair each on the left and right sides. As a result, both trace sliders 13 are configured to be able to move in and out horizontally in the directions of arrows a and b from the front and rear openings 8, and the disk tray 7 is held by both trace sliders 13 so that it can be moved in and out horizontally in the directions of arrows a and b. .

According to the disk player configured as described above, first, before starting loading of the disk 9, as shown in FIG. 4A, the disk tray 7 is
is almost completely pulled out of the player body 1 in the direction of arrow b. Further, as shown in FIGS. 4A and 5A, both trace sliders 13 are also connected to the player body 1.
The disk tray 7 is pulled out to the outside by approximately half the amount that the disk tray 7 is pulled out.

Next, the loading operation of the disk 9 is started after the disk 9 is placed horizontally in the circular recess 10 of the disk tray 7.

That is, when both drive pinions 16 are driven by the motor 17 via the drive shaft 25 in the direction of arrow c in FIG. The guide pin 28 is horizontally driven on the horizontal guides 23 of both guide plates 14 in the direction of arrow a. Then, both trace sliders 13 are horizontally driven in the direction of arrow a, and both drive pinions 21 are moved in the direction of arrow a on both fixed racks 19.
While being rolled in the direction, these two rolling pinions 2
1, both trailer racks 20 are horizontally driven in the direction of arrow a. As a result, the disc tray 7 is horizontally moved in the direction of arrow a by a horizontal movement amount twice the horizontal movement amount of both trace sliders 13, and the disk tray 7 is horizontally retracted into the player body 1 as shown in FIG. 4B. will be included.

As shown in FIG. 6A, when the disk 9 is horizontally pulled in to a position directly above the turntable 2, as shown in FIG. Stopper 3
A pair of guide pins 28 are brought into contact with 2a, and the horizontal retracting operation of both trace sliders 13 and disk tray 7 is completed.

On the other hand, both rack plates 1 are driven by both drive pinions 16.
5 continues to be horizontally driven (overstroked) in the direction of arrow a, and as shown in FIG. Driven. Then, as shown in FIG. 6B, the disk tray 7 is vertically lowered together with both trace sliders 13 in the direction of arrow d, and the disk 9 is mounted horizontally on the turntable 2. At this time, the disk 9 is engaged with the outer periphery of the center guide 2a of the turntable 2 through the center hole 9a and is centered, and is also moved around the turntable 2 by a chucking means (not shown).
is being teased.

With the above, the disk loading operation is completed, and the disk 9 is horizontally rotationally driven by the motor 4 via the turntable 2.
The optical head 3 performs recording and reproduction on the disk 9.

The unloading operation of disk 9 is as follows:
This is the reverse operation of the loading operation.

That is, when both drive pinions 16 are driven to reverse rotation in the direction of arrow e in FIG. 5C due to the reverse rotation of the motor 17, the disk tray 7 is moved in the direction of arrow f by both trace sliders 13 as shown in FIG. 6A. The disk 9 is lifted vertically to the turntable 2.
After being lifted from above and placed horizontally in the circular recess 10 of the disk tray 7, the disk tray 7 is horizontally moved in the direction of arrow b by a horizontal movement amount twice the horizontal movement amount of both trace sliders 13. , 4th
As shown in Figure A, the disk tray 7 is almost completely pulled out of the player body 1. At this time, as shown in FIG. 5A, the stopper 32 provided at the end of both guide plates 14 in the direction of arrow b
A pair of guide pins 28 are brought into contact with b, and the horizontal pull-out operation of both trace sliders 13 and disk tray 7 is completed.

By the way, as shown in FIG. 4A, when the disc tray 7 is almost completely pulled out of the player main body 1, the circular recess 10 is completely exposed outside the player main body 1, so that the disc 9 relative to the disc tray 7 The attachment/detachment operation can be performed very easily from directly above the circular recess 10.

Next, according to FIGS. 1A to 3, the double speed mechanism 1
8 will be explained in detail.

First, the fixed rack 19 and the trailer rack 20 are horizontally opposed to each other. The rolling pinion 21 is disposed vertically between the two racks 19, 20, is engaged with the two racks 19, 20, and is configured as a wide pinion with a wide width at the top and bottom. . Note that this rolling pinion 21
is rotatably attached to a pinion shaft 34 attached vertically to the lower part of the trace slider 13. Furthermore, the rack plate 15 is engaged with a horizontal guide groove 35 provided in the guide plate 14 via a pair of front and rear guide pins 36, and is configured to be movable in the horizontal direction. Furthermore, the disk tray 7 and the trace slider 13 have vertical engagement between a guide groove 30 and a guide pin 31, and another guide groove 37 provided at right angles to these and a pair of front and rear guide pins 38. Due to the engagement in the horizontal direction by b direction)
It is configured so that it can only be moved relative to. Further, the disk tray 7 is configured to be able to move smoothly in the front and back direction on a total of four steel balls 40, a pair of front and rear, which are held in a recess 39 on the trace slider 13.

According to the double speed mechanism configured as described above, when the disk tray 7 is vertically moved together with the trace slider 13, the rolling pinion 21 is moved as shown in FIGS. 1A and 1B. It is possible to smoothly slide on the fixing rack 19 in the vertical directions of arrows d and f.

Therefore, since the double speed mechanism 18 does not restrict the vertical descent of the disk tray 7, the player main body 1
The disk tray 7 itself, which has been horizontally retracted inside, can be vertically lowered as it is.

Although the embodiments of this invention have been described above, this invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of this invention.

Furthermore, this invention can be applied to disc players for various uses using discs of various recording and reproducing methods.

[Effect of idea]

As mentioned above, this invention uses a double speed mechanism to horizontally move the disc tray, so the disc tray can be pulled out almost completely from within the player body, which has a short depth, and the disc can be moved onto the disc tray. It can be easily attached and detached.

However, since the disk tray itself, which has been pulled horizontally into the player main body, can be lowered vertically without being restrained by the speed-doubling mechanism, it is possible to lower the disk tray itself vertically without being restricted by the speed-doubling mechanism. There is no need to adopt a complicated structure such as using a tray carrier and attaching the disk tray to the tray carrier so that it can be raised and lowered.The structure is extremely simple, and the number of parts and assembly man-hours can be greatly reduced. can.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Figures 1A and 1B are cross-sectional views of essential parts for explaining the speed-doubling mechanism, Figure 2 is an exploded perspective view of the same essential parts, and Figure 3 is an exploded perspective view of the same essential parts. The figure is a perspective view of the main parts of the same as above, Figures 4A and 4B are overall plan views for explaining how to take in and take out the disk tray, Figures 5A to 5C are side views of the entire same as above, and Figures 6A and 4B are Figure 6B is a central vertical cross-sectional view of the same as above. In addition, in the symbols used in the drawings, 1...player body, 2...turntable, 7...disc tray, 9...disk, 13...trace slider, 14...guide plate, 15...rack plate, 1
6... Drive pinion, 17... Motor, 18...
Double speed mechanism, 19...fixed rack, 20...trailer rack, 21...rolling pinion, 23...horizontal guide, 24...vertical guide.

Claims (1)

[Scope of Claim for Utility Model Registration] A player body with a turntable installed inside, a trace slider configured to be able to move in and out horizontally with respect to the player body, and a trace slider with a disk placed horizontally on the top surface. a disk tray held so as to be horizontally movable in and out of the player; a guide plate having a horizontal guide and a vertical guide for a trace slider provided in the player body; A rack plate that is driven horizontally and vertically along a guide plate, a drive pinion that is moved by a motor to drive the rack plate horizontally, and a trailer rack that is installed horizontally and laterally on the disk tray.
A fixed rack fixed inside the player main body and provided horizontally facing the trailer rack, and a fixed rack rotatably attached to the trace slider and arranged vertically between the trailer rack and the fixed rack and connected to both racks. When the trace slider is driven in the horizontal direction along the horizontal guide of the guide plate by the rack plate, the rolling pinion is rolled on the fixed rack. By driving the trailer rack with this rolling pinion, the disc tray is moved in the horizontal direction with a horizontal movement amount twice that of the trace slider, and the rack plate moves the trace slider perpendicular to the guide plate. When driving vertically along the guide, the rolling pinion slides vertically against the fixed rack, and the disc tray is moved vertically together with the trace slider, thereby moving the disc relative to the turntable. A disk player configured to be detachable.