JPS6320758A - Disk loading mechanism for front loading disk player - Google Patents

Abstract

PURPOSE:To selectively load plural disks of different outer diameters by securing such a constitution where a disk moves to the inner part of a disk player only when the disk is positioned at a prescribed position according to a prescribed outer diameter. CONSTITUTION:When a large-size disk 1a is loaded, the rotary levers 3a and 3b turn shallowly and the projections 8 of both levers are set in the outer grooves 6a and 6d of a disk stage 5. Then a disk holding plate 2 can move in the loading direction of the disk 1a. While both levers 3a and 3b turn deeply when a small-size disk 1b is loaded. In this case, the projections 8 are set in the inner grooves 6b and 6c and the plate 2 can move in the loading direction of the disk 1b. When the disk 1 moves to the inside of a disk player by a prescribed amount, a chuck and draw-in means 20 works to chuck and draw the disk 1 into a prescribed position of the player. In such a way, plural disks of different diameters are loaded selectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc loading mechanism in a front-loading disc player in which a disc is inserted through an opening at the front of the player. The present invention relates to a loading mechanism that can selectively and arbitrarily load a plurality of discs having different values.

[Conventional technology]

A conventional loading mechanism is disclosed in Japanese Patent Application Laid-open No. 1986-
There are known discs as described in Japanese Patent No. 185061, but these conventionally known discs are intended for the case where the outer diameter of the disk is limited to one type, and is intended for the case where the outer diameter of the disc is limited to one type. It was not possible to selectively and arbitrarily load discs.

[Problem that the invention seeks to solve]

Therefore, the present invention aims to solve the problem of making it possible to selectively and arbitrarily load a plurality of discs having different outer diameters in a disc loading mechanism of a front-loading disc player. .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a disc loading mechanism in a front-loading disc player that makes the above possible.

[Means for solving problems]

To achieve the above object, the present invention provides a front loading disc player in which a disc is inserted through a front opening of the player, including a disc holding plate disposed in the front opening; disc outer diameter determining means for determining the size of the outer diameter of the inserted disc and positioning the disc accordingly; Only when the disc is positioned at a predetermined position, the disc, together with the disc holding plate, is allowed to advance further into the player and is guided into the player.

[Effect]

The operation will be explained below with reference to FIG.

FIG. 10 is a conceptual diagram showing an overview of the operation of the loading mechanism according to the present invention. In the figure, 1 is a disk, 2
1 is a disc holding plate provided at the front opening of the player (not shown), 3a and 3b are rotating levers attached to the holding plate 2 with 1 as a pivot point, and 8 is at one end of the rotating lever 3a or 3b. Protrusions attached perpendicular to the paper surface, 5a, 5d
20 is a groove formed in an appropriate member (not shown) disposed on the lower side of the disk holding plate 2, and 20 is a means for inserting the disk 1 into the chuck.

FIG. 10(a) shows the initial state before the insertion of the disc starts.

FIG. 10(B) shows the state at the initial stage when the disc I is inserted from the front opening of the player (not shown). That is, the front edge of the disc 1' contacts the two rotating levers 3a and 3b, and rotates both levers at their respective pivot points.
Rotate left and right around the center. The amount of displacement of both levers 3a, 3b due to this rotation is determined by the outer diameter dimension of the inserted disk 1. If the outer diameter of the disk 1 is relatively small, the disk 1 will fit relatively deep and the displacement amount of both levers 3a, 3b will be large. However, if the outer diameter of the disk 1 is large, the disk 1 will move quickly to the levers 3a, 3b. When I hit 3b,
The amount of displacement due to rotation of both levers 3a, 3b is also reduced.

Once the outer diameter of the disk 1 is determined in this manner, the amount of displacement due to rotation of the levers 3a, 3b is also uniquely determined accordingly. When the levers 3a and 3b rotate, the protrusion 8 attached to one end of the lever and extending perpendicularly to the paper surface similarly rotates by a predetermined displacement amount about the pivot point 1.

FIG. 10(B) shows that as a result of the protrusion 8 being rotated by a predetermined amount of displacement around the pivot point kl, the protrusion 8 has reached a position where it can be held at one end of the grooves 6a and 6d. It shows what you did. As a result, the protrusion 8 is now formed into the groove 6a,
6d, and when you push the disc 1, the disc holding plate 2, the rotating levers 3a, 3b,
The disk 1 is integrated and the protrusion 8 is guided inside /I6a, 6a and advances to the back.

In this way, when the disc 1 advances a predetermined distance to the back,
When this is detected, the chuckless loading means 20 operates, and the means 20 chucks (grabs) the disk 1 as shown in FIG. 10(c). Then, the chuck-loading means 20 uses the power of a motor or the like to pull the chucked disc 1 into the player (the disc holding plate 2, rotating levers 3a, 3b, etc. are also integrated). It goes without saying that the protrusion 8 is drawn into the grooves 5a, 5d as it is guided therein).

When the disc 1 reaches a predetermined position in the player, this is detected, and the chuck and loading means 20 releases the chuck of the disc 1, leaving the disc 1 in place (that is, setting it in the predetermined position). ).

When handling a plurality of disks with different outer diameters, use a rotating lever 3a that matches the outer diameter of each disk.

If the grooves 5a and 6d are separately formed in accordance with the displacement position of the groove 3b, this problem can be solved.

〔Example〕

The present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a plan view of the same.

In these figures, 1 is a disk, 2 is a disk holding plate, 3a and 3b are rotating levers, and 4a and 4b are disk clamping pieces (corresponding to the gripping means 20 in FIG. 10).
, 5 is a disk stand, 6a to 6d are grooves, 7a, 7b are grooves related to the holding pieces 4a, 4b, 8 is a protrusion, 9a, 9b are rotating pieces, 12 is a protrusion, 13a, 13b are sliding plates, 13C 1 is a side wall, 14a and 14b are chassis surfaces, 15 is a shaft, 16 is a clamper holder, and 17 is a disk clamper.

The operation will be explained below.

When the disc 1 is inserted through the front opening of the player, the front edge of the disc comes into contact with the rotating levers 3a and 3b that are pivotally supported on the disc holding plate 2, and when the disc 1 is pushed further, the rotating levers 3a and 3b are brought into contact with the pivot levers 3a and 3b. It will rotate around the center.

Fig. 4 shows the position of the rotating lever depending on whether the inserted disc 1 is a large disc 1a, a small disc 1b, or no disc is inserted.
It is shown in FIGS. 5 and 6.

When inserting the large disk 1a, the rotating levers 3a, 3
As seen in FIG. 4, the projections 8 attached to the rotation levers 3a and 3b and extending in the direction perpendicular to the plane of the paper are inserted into the outer grooves 6a and 6d formed in the disc stand 5. Accordingly, the disc holding plate 2 becomes movable in the insertion direction of the disc 1a.

In addition, when inserting a small disk lb, the rotation lever 3
As shown in FIG. 5, the levers a and 3b rotate deeply, and the protrusions 8 attached to the rotation levers 3a and 3b are grooves 6b formed inside the disk base 5.

6c, and the disk holding plate 2 is also the disk 1a.
It becomes possible to move in the insertion direction.

If you press the disk 1a with more force, the disk 1a will move to the disk holding plate 2 via the rotation levers 3a and 3b.
The whole thing, including the disc, will be inserted deeper.

In this way, when the disk 1 is inserted a predetermined distance, the front edge of the disk is clamped (chucked) by the clamping pieces 4a and 4b (FIGS. 1 to 3).

This clamping mechanism will be explained below. Clamping pieces 4a, 4
As the disc 1 is inserted, the discs 1 and 2b are pushed by the disc 1 and advance to the back along the grooves 7a and 7b, and when they have advanced a predetermined distance, they grip the front edge of the disc 1.

The following explanation will be given by taking the clamping piece 4a and the groove 7a as an example, and a sectional view of the main part of the clamping mechanism is shown in FIG.

FIG. 7 is a sectional view of the holding piece 4a and the groove 7a taken along the length direction of the groove 7a in FIG. In FIG. 7, the clamping piece 4a is supported so as to be rotatable in the vertical direction about the fulcrum 2, and a protrusion 10 is provided protrudingly from one end of the cough clamping piece 4a. The other end of the clamping piece 4a is adapted to clamp the front edge of the disc 1 between it and the disc holding plate 2. Also, the spring 11 is the fulcrum 2
One end of the disc is supported by a shaft, and its one end applies a pushing force to the disk holding plate 2, and the other end also exerts elasticity on the clamping member 4a.

When the protrusion 10 protruding from one end of the clamping piece 4a rotates upward about the fulcrum 2 against the elasticity of the spring 11,
When the gap between the other end of the clamp 4a and the disk holding plate 2 opens to open the front edge of the disk 1 into a fin, and the protrusion 10 rotates downward with the fulcrum 2 as the axis according to the elasticity of the spring 11, The space between the other end of the clamping piece 4a and the disc holding plate 2 is closed to clamp (chuck) the front edge of the disc 1.

The projection lO moves along the groove 7a as the holding piece 4a is pushed by the disk l. The bottom of the groove 7a consists of a shallow part 7x (two places) and a deep part 7y, and when the protrusion 10 is at the shallow bottom part 7x at the right end of the groove 7a, the protrusion 10 supports the spring 11 with 2 as the fulcrum. It is in a state of being rotated upward against the elastic force, so that the space between the disc holding plate 2 and the other end of the clamping piece 4a is open, and the front edge of the disc 1 is in a freely open state.

When the protrusion 10 is pushed by the disc 1 and reaches the deep bottom 7y, the protrusion 10 rotates downward with the elasticity of the spring 11 about the fulcrum 2, and therefore the disc holding plate 2 and the clamping piece 4a The space between the disk 1 and the other end is closed, and the front edge of the disk 1 is clamped (chucked).

In this way, once the clamping piece 4a has clamped the front edge of the disc 1, a detection switch (not shown) or the like is operated, and the entire clamping piece 4a, including the disc, is moved into the groove 7a using power from a coding motor or the like. When the projection 10 reaches the shallow bottom 7x at the left end of the groove 7a, the holding piece 4a releases the holding piece 4a and releases the disk 1, so that the disk 1 is pulled inside the player. The cent can be placed in place.

The above description is applicable to the case where the disk 1 is a large disk 1a and the protrusion 8 advances along the outer grooves 6a, 6d.

Next, the disk 1 is a small disk 1b, and the protrusion 8
A case will be explained in which the movement progresses along the inner grooves 5b and 5c. The fact that the disk 1 is small means that the position on the groove 7a at which the leading edge of the disk should be released is
This means that it is different from the case where the disk 1 is large. In other words, in the case of a large disk, it was sufficient to release the grip on the disk 1 when the protrusion 10 reached the shallow bottom 7x at the left end in FIG. In order to set the disc 1, the disc 1 must be unclamped midway through the process. The operating mechanism for this point will be explained below.

8A and 8B respectively show the groove 6b in FIG. 1.
and 7a, FIG. 9A is a sectional view taken along vAx-x' in FIG. 8A, and FIG. 9B is a similar sectional view to FIG. 8B.

It has already been explained that when the disk is a small disk ib, the protrusion 8 attached to one end of the rotary lever 3a advances along 7a6b. Therefore, in the middle of m6b, Fig. 8A,
As shown in FIG. 9A, the left end of the rotary piece 9a, which is rotatable about the pivot point 3, is made to protrude. Then? The protrusion 8 that has advanced along the rotor 6b hits this, and the rotating piece 9
Rotate clockwise around 3 with a as the pivot point, and as a result,
As seen in FIGS. 8B and 9B, the right end of the rotating piece 9a protrudes into the groove 7a.

In FIG. 7, the rotary piece 9a can be seen in the middle of the groove 7a because one end of the rotary piece 9a is made to protrude to 17a as described above. Then, the protrusion lO that has progressed along the groove 7a rides on this rotating piece 9a, and
As a result, the clamping piece 4a rotated upward,
Release the leading edge of the disc 1. ? In R7a, the position at which the disk l is released from the grip can be arbitrarily determined depending on the position from which one end of the rotary piece 9a protrudes, and this point has also been devised.

When ejecting the disc 1 from inside the player, as shown in FIGS. 8B and 9B, the protrusion 8 that has advanced through 46b from the opposite direction hits the left end of the rotary piece 9a, and uses this as a pivot point to rotate the protrusion 8. As a result, the rotating piece 9a can return to its original state as shown in FIGS. 8A and 9A.

Referring to Figures 1 to 3 again, insert disk 1,
The disk 1 is held between the holding pieces 4a and 4b, and the holding plate 2
At the same time, we will return to the point at which we started proceeding inside the player and explain related matters.

As the disk holding plate 2 advances to the back, the disk holding plate Vi2 comes into contact with the side wall 13C formed on the sliding plates 13a and 13b shown in FIG. 1, and the sliding plate 13a.

13b all at once in the disk insertion direction.

These sliding plates N15a and 13b have slopes that fit into protrusions 12 formed on the disk base 5, and chassis surfaces 14a are formed on the outside of the sliding plates 13a and 13b.
, 14b are arranged, and the sliding plates 13a, 13b are placed on this.
Form a vertical hole that fits the protrusion 12 through the slope of (
As a result, the sliding plates 13a and 13b move in the disk insertion direction, and the disk stand 5 is lowered to the lower position.
The disc 1 can be placed on a turntable (not shown). Similarly, the clamper holder 16 equipped with the disc clamper 17 is also movable to the lower position.

〔Effect of the invention〕

According to the present invention, there is an advantage that in a front-loading disc player, it is possible to selectively and arbitrarily code a plurality of discs having different outer diameters.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a plan view thereof, and Figs. An explanatory diagram showing the position of the rotating lever, FIG. 7 is a new view showing the main parts of the clamping mechanism used in the present invention, FIG. 8A is an enlarged plan view showing the state where grooves 6b and 7a are formed, and FIG. 8B is an enlarged plan view of the same in another state, and FIG. 9A is b'A in FIG. 8A.
FIG. 9B is a cross-sectional view taken along the line XX′, FIG. 9B is a similar cross-sectional view to FIG. 8B, and FIG. 10 is a conceptual diagram showing an outline of the operation of the loading mechanism according to the present invention. Explanation of symbols 1...Disc, 2...Disk holding plate, 3a, 3
b...Rotating lever, 4a, 4b...Disc clamping piece, 5...Disc stand, 6a, 6b, 6c, 6d...-
Groove, 7a, 7b...Groove, 8...Protrusion, 10...Protrusion, 20...Chuck powerless loading means. $ l Figure $2 Figure 3 Figure 4 Figure 9 and 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. A front-loading disc player in which a disc is inserted from the front opening of the player, including a disc holding plate disposed at the front opening, and a disc holding plate attached to the holding plate and inserted from the front opening. a disk outer diameter determining means for determining the size of the outer diameter of the disk and positioning the disk accordingly; A loading mechanism for a disc in a front-loading disc player, comprising means for allowing the disc to advance further into the player together with the disc holding plate and guiding the disc into the player only when the disc is positioned at . 2. In the disk loading mechanism for a front-loading disk player as set forth in claim 1, the disk outer diameter determining means is mounted on the holding plate and spaced apart from each other by a certain distance along a direction intersecting the disk insertion direction. The two rotating levers attached to the front opening and the disk inserted from the front opening abut against the two rotating levers, and the disk is moved by a predetermined displacement amount that varies depending on the size of the outer diameter of the disk. A disk loading mechanism for a front-loading disk player, comprising means for relatively rotating and positioning two rotating levers.