JPS6228966A - Front loading mechanism for player of video disk cum compact disk - Google Patents

Abstract

PURPOSE:To improve operativity by providing a table for CD in addition to a table for VD and moving forth and back the CD table to and away from the VD table accosiatively with the drawing-out/storing operation of the VD table. CONSTITUTION:The CD table 30 is provided in addition to the VD table 20. The CD table 30 is allowed to move forth and back relatively to the VD table 20 which is drawn out of and stored in the disk player body 1, and the interlocking mechanism consisting of a pinion 28 and a rack 29 which move forth and back the CD table 30 to and away from the VD table 20 associatively with the drawing-out/storing operation of the VD table 20 is provided. Then the CD table 30 is moved forth when the VD table 20 is drawn out to set a CD or reduce the drawing-out quantity of a VD.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a player that can be used for both video discs and compact discs, and particularly relates to a front-loading player in which a disc table is provided in the player body so that it can be pulled out and stored in the front and rear directions. Regarding the mechanism.

"Prior art and its problems" Video discs (on which video information is recorded by optical recording means)
Since the basic recording principle is the same, compact discs (hereinafter referred to as CDs) on which audio information such as music is similarly recorded using optical recording means, are used by a single optical information reading pickup. , it is possible to read that information. For this reason, a dual-purpose player has been proposed, but in the conventional front loading mechanism, as shown in FIG. The disc mounting recesses 13a, 13b, and 13c for CDs (two types, 12 inches and 8 inches) and CDs (5 inches) are provided concentrically with stepped cross sections. Now, when playing a small-diameter CD, the disc table 12 must be pulled out almost all the way and placed in the disc mounting recess on the disc table 12, which has the same center, almost regardless of whether a large-diameter CD is played. This is why CDs in particular
There was a problem of poor operability in the case of

``Object of the Invention'' The present invention is based on the above-mentioned awareness of the problems with conventional devices.When playing a small-diameter CD, the table can be pulled out only by a small amount, and it can be placed in front of the table. The purpose is to obtain a front loading mechanism that can be used.

``Summary of the Invention'' The present invention replaces the conventional front loading mechanism in which disc mounting recesses for VD and CD are formed on a single table. This was created based on the idea of providing a table and moving it.A CD table was provided that could be moved back and forth relative to a VD table that could be pulled out and stored in the main body of the disc player. The present invention is characterized in that an interlocking mechanism is provided that moves the CD table forward and backward relative to the VD slave table in conjunction with the table drawer storage operation. If the CD table moves forward when the VD slave table is pulled out in this way, the amount of VDs to be pulled out when setting or taking out a CD can be reduced.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. 1 to 4 show an embodiment of the present invention, in which a disc player main body 11 includes a disc table 12 of a conventional device.
A VD slave table 20 corresponding to the table 20 is provided so as to be able to be drawn out and stored in the front and back direction. There are various types of guide mechanisms for the VD slave table 20, and since the present invention does not concern any type of guide mechanism, illustration thereof will be omitted.

This VD slave table 20 has a circular disc mounting recess 2 for 12-inch VD and 8-inch VD in its center.
2.23 are formed concentrically and with a stepped cross section.

The VD slave table 20 is provided with a through hole 24 extending forward from the center of the disc mounting recess 22,23. Front and rear end surfaces 25.2 of this through hole 24
6 has a semicircular arc shape corresponding to the diameter of the CD. 27 is a hole extending rearward from the rear end surface 26 of the through hole 24;
This is an escape hole for the disc clamp mechanism.

On the bottom surface of this VD child table 20, there is a CD table 3.
0 is supported so as to be movable in the front and rear direction. This CD table 30 has a circular disc mounting recess 31 for a CD formed in the center of its front part, and a front-rear rack 32 is fixed to the side surface thereof. Reference numeral 33 denotes a guide roller that makes the CD table 30 movable, and supports the VD slave table 20. Reference numeral 34 designates an escape hole for a disc clamp mechanism, which is bored in the center of the CD table 30 so as to extend in the front-rear direction.

When the CD table 30 is advanced relative to the VD slave table 20, the disc mounting recess 31 is inserted into the through hole 24.
When it reaches the tip of the disk and retreats, the disk mounting recess 31
and a disc mounting recess 22.2 on the VD slave table 20 side.
The centers of 3 and 3 coincide.

The VD slave table 20 is rotatably supported by a pinion 28 that constantly engages with the rack 32 of the CD table 30, and a rack rack 29 that engages and disengages from the pinion 28 is fixed to the disc player main body 11. These constitute an interlocking mechanism that moves the CD table 30 forward and backward in conjunction with the drawer storage operation of the VD slave table 20.

That is, in this apparatus having the above configuration, when the VD slave table 20 is housed in the disc player main body 11, the pinion 28 supporting the VD slave table 20 is fixed to the CD table 30, as shown in FIG. The CD table 30 is positioned at the rearward end with respect to the VD secondary table 20 and the center of the disc mounting recess 31 is engaged with both the rack 32 fixed to the disc player body 11 and the rack 29 fixed to the disc player main body 11. VD child table 20
It is made to coincide with the center of the disk mounting recesses 22 and 23.

When the VD slave table 20 is pulled out from this state, the pinion 28 meshing with the rack 29 rotates in the direction of the arrow, and the rack 32, that is, the CD table 30 rotates accordingly.
advances toward the VD child table 20. The speed of this forward movement is twice the drawing speed of the VD slave table 20 due to the meshing relationship of the gears. When the CD table 30 reaches the forward end, the pinion 28 and rack 29 are disengaged.
Thereafter, the VD child table 20 and the CD table 30 are pulled out together.

Conversely, if you push the VD secondary table 20 and store it,
Contrary to the second operation, the VD slave table 20 and CD table 30 move together until the pinion 28 engages with the rack 29, and when the pinion 28 engages with the rack 29,
The CD table 30 is stored at twice the storage speed of the VD slave table 20. At the push-in end of the CD table 30, the center of the disc mounting recess 31 and the center of the disc mounting recesses 22 and 23 coincide.

Therefore, according to the present invention, when setting a CD, there is no need to pull out the entire VD sub table 20.
As shown in the figure, the VD slave table 20 can be pulled out until the CD can be placed on the disc mounting recess 31 of the CD table 30, which is moving forward relative to the VD slave table 20. , the amount of drawout of the VD secondary table 20 can be reduced, and operability is improved. The amount of pull out of the VD child table 20 when playing a VD is the same as in the conventional device.

When the CD set in the disc mounting recess 31 of the CD table 30 is pushed into the VD secondary table 20, the CD set in the disc mounting recess 31 of the CD table 30 is stored in the disc mounting recesses 22 and 2 of the VD secondary table 20.
3, the disc clamping mechanism (not shown) passing through relief holes 27 and 34 can clamp a CD in exactly the same motion as it clamps a VD.

In the above embodiment, when a VD is mounted in the disc mounting recesses 22 and 23 of the VD slave table 20, in order to avoid the disc mounting recess 31 of the CD table 30 from interfering with this, the VD slave table 20 is penetrated. A hole 24 is drilled and a CD table 30 is supported on the underside of the hole 24. For example, a VD slave table 20 groove is provided and a CD is inserted into this groove.
Interference can be similarly avoided even if the table 30 is moved back and forth.

"Effects of the Invention" As described above, in the front loading mechanism of the VD/CD player of the present invention, a CD table is provided separately from the VD table, and the CD table is connected to the VD table drawer storage operation. Since the VD slave table is moved forward and backward in conjunction with the VD slave table, the amount of drawout of the VD slave table when setting a CD can be made smaller than that when setting a VD. Therefore, since no extra operations are required, operability can be improved.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the VD@CD player according to the present invention, FIGS. 1 and 2 are plan views in different operating states, and FIGS. 3 and 4 are plan views in different operating states. Figure 5 is a cross-sectional view taken along lines ■-■ and IV-IV of the conventional VDΦC.
FIG. 3 is a perspective view showing a front loading mechanism of the D-type player. 11...Disc player main body, 20...VD child table 22.23...Disc mounting recess, 2 pieces...
・Through hole, 28... Pinion, 29... Rack, 3
0...CD table, 31...Disk placement recess, 32...Rack. Patent applicant: Asahi Optical Industry Co., Ltd. Agents: Kunio Miura and Shigeru Matsui

Claims (1)

[Claims] (1) Disc player body; A video disc table supported on this disc player body so that it can be pulled out and stored in the front and rear directions; A compact disc table that is provided so as to be movable back and forth relative to this video disc table; and an interlocking mechanism for moving the compact disc table forward and backward relative to the video disc table in conjunction with the drawer storage operation of the video disc table. Front loading mechanism.