JPS6234352A - Disk inserting device - Google Patents

Abstract

PURPOSE:To execute easily operations of insertion ejection by providing a roller and an idler which is driven by said roller, in the vicinity of one side face of a case of a player, and rotating this roller forward/backward when inserting and ejecting a disk. CONSTITUTION:When a disk 13 is inserted in a direction as indicated with an arrow into a player by operator's hands, the tip of the disk 13 enters between a roller 1 and an idler, and the roller 1 and the idler are turned by receiving a force from the disk 13. In this case, a tip part 13a of the inserting direction of the disk 13 abuts on a tip stepped part 1d' of the rotating direction of a recessed part 1d of the roller 1. Therefore, the disk 13 becomes a state that it has been contained in the recessed part 1d, and when the roller 1 is turned clockwise by a prescribed angle, a projecting part 12b of the second switch 12 is detached from a recessed part of a cam 1b, and a contact is closed and becomes on. As a result, a loading motor 2 starts to rotate, and when the disk 13 is being inserted, the switch 12 keeps on by the cam 1b, therefore, the roller 1 feeds the disk 13 to the player.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a disc insertion device for a record player, a compact disc player, etc., and more particularly to a disc insertion device of a simple structure with improved operability.

[Background of the invention]

As an example of a conventional disk insertion device, for example, the
As described in Publication No. 9-22307.

It has a first turntable and a second turntable that is detachable from the first turntable and is for mounting a disc, and the second turntable is pulled out to the outside of the player body to record records. There is one that allows for the exchange of

However, this conventional device requires a drive control means for pulling the second turntable out of the player body, and therefore has a problem in that the configuration is complicated and the number of parts increases.

Furthermore, when changing records, the user has to pull out the second turntable from the player body, resulting in the problem that changing records is troublesome and time consuming.

[Purpose of the invention]

The purpose of the present invention is to eliminate the problems of the prior art described above,
To provide a disc insertion mechanism for a record player, a compact disc player, etc., which is easy to operate and has a simple structure.

[Summary of the invention]

According to the present invention, a roller and an idler driven by the roller are provided close to one side of the case of the player, and the roller is rotated in one direction when a disc is inserted, and the roller is rotated in the opposite direction when the disc is ejected. This allows the operator to automatically insert the disc into the player by simply pushing the disc a little between the roller and the idler.

[Embodiments of the invention]

Below, the present invention will be explained in detail by way of examples. 1st
The figure shows a top plan view of a disc insertion mechanism mounted on a player and a turntable section on which a disc is mounted. Moreover, FIGS. 2 and 3 show cross-sectional views when FIG. 1 is cut along the A-entry line and the B-B line, respectively.
The figure shows a sectional view before the disk is installed, and FIG. 3 shows a sectional view when the disk is installed.

In these figures, %l indicates a roller to which power is transmitted from the loading motor 2 via the boot IJ'a and the belt 4.

This roller may be a normal elastic roller with a flat surface, but preferably has a recessed portion 1d on the roller surface. When viewed in a developed view, this recess ld has a circular shape that is slightly larger than the disk to be mounted.

Reference numeral 5 indicates a lever to which a spring 6 applies rotational force in one direction. The lever 5 has a U-shaped shape,
Both ends thereof are rotatably supported by a support shaft 20 supported by the player's body.

Further, the radius of the U-shaped arc of the lever 5 is made smaller than that of the disk, and at or near the boundary between the arc and the straight part, there is a A center holter' support part 5a is formed which protrudes a predetermined length above the plane of the paper in FIG.

The center portion of the center holder support portion 5a is formed into an annular shape having a circular hole, and the center holder 7 is supported by the Narita-shaped hole. Furthermore, an annular spring 8 is provided between the annular portion of the center holder support portion 5a and the center holder 7, as clearly shown in FIGS.

A lever extension part 5b is integrally formed on the bottom of the U-shape of the lever 5 in the tangential direction thereof, and the eye lever extension part 5
As shown in FIGS. 2 and 3, the open end of b is bent in the vertical direction so as to approach the roller l, and its tip is bent vertically in the direction approaching the rotational axis of the roller 1. It is folded into. This bent portion forms a roller cam action portion 5c.

A direct drive motor IO that directly drives the turntable 9 is mounted on the bottom of the player case 14.
The axis 10m of the cough motor 10 is the center axis 9 of the turntable 9.
Support and rotate the Yuichi table 9 in a relationship consistent with a. The first switch 1) is a switch that turns on and off the power supplied to the motor 10.

On the side of the roller 1 opposite to the side on which the belt 4 is attached, a cam lb and a shirt lc are provided coaxially and fixedly with the central axis of the O-roller 1, as shown in Fig. 2-3. ing. A second switch 12 that turns on and off the electric power supplied to the loading motor 2 is disposed opposite to the cam 1b. This second switch 12 includes, for example, two elastic leaf pieces 12a, a protrusion 12b attached to one end of the leaf pieces 12a toward the cam lb, and a false leaf piece 12a.
and contacts attached to opposite sides of the cam 1b, and turns off when the protrusion 12b faces the recess of the cam 1b.

Further, reference numeral 21 in FIG. 1 is a reverse switch that is turned on when the disc is taken out from the turntable. This reverse switch 21 includes a push button 16 and a switch section 17.
It is fixed at a position facing the second switch 12 of the case 14. The structure and operation of this switch 21 will be explained in detail later.

Next, the structure of the roller I on the side where the belt 4 is attached will be explained with reference to FIGS. 4 and 5. As shown, the roller cam acting portion 5 of the lever 5 is located close to the rotation axis of the roller 1.
c extends, and a roller cam la is fixed to the rotating shaft of the cough roller l. As shown in FIG. 4, the positional relationship between the roller cam 1a and the roller cam acting portion 5C is that before the disk 13 is installed, they are engaged with each other, and the disk 13 is pushed into the player and the roller 1 is turned back. When the roller cam 1a starts to rotate clockwise, the roller cam 1a also rotates counterclockwise. As this rotation progresses, when the disk 13 is almost separated from the roller 1, the roller cam 1a engages with the roller cam action portion 5C, as shown in FIG. 5, and the lever 5 is pressed downward. Then, the lower end of the lever extension 5b of the lever 5 presses the first switch 1) downward, turning the switch 1) on. As a result, the direct drive motor lO is supplied with power and rotates the disk 13 placed on the turntable 9.
The disc starts playing.

Next, the operation of this embodiment will be explained with reference to FIGS. 6 and 7.

6 and 7 are perspective views showing the mutual positional relationship between the disc 13 and the recess 1d provided in the roller 1. FIG.

First, as shown in FIGS. 2 and 4, the disc 13 is inserted into the player (in the direction of the arrow) by the operator's hand. Then, the tip of the disk 13 enters between the roller 1 and the idler, and the roller 1 and the idler receive force from the cough disk. It comes into contact with the tip step portion 1d'. Therefore, the disk 13 is housed in the core recess 1d, and the disk 13 is housed in the core recess 1d.
When 3 is pressed into the player by the operator.

The roller 1 rotates counterclockwise to the state shown in FIG.

When the roller 1 is rotated counterclockwise by a predetermined angle, the second
The protrusion 12b of the switch 12 comes out of the recess of the cam 1b, and its contact closes and turns on.

As a result, electric power is supplied to the loading motor 2, and the reed motor 2 starts rotating. % while inserting the disc
Since the cough switch 12 is maintained in the ON state by the cam lb, the roller 1 is maintained at one rotation by the driving force supplied from the motor 2.

The disk 13 is fed into the player at the same speed as the rotational speed of the roller l. At this time, the lever 51 moves in the opposite direction while being fitted into the disk 13 portion 1d. and,
When almost all of the disk 13 is pushed onto the lever 5, the rear end 13a' of the disk 13 in the advancing direction
comes into contact with the rear end portion 1d'' of the concave portion 1d of the roller 1 in the rotational force direction, and the disk 13 receives a force toward the lever 5 by the stepped portion ld''. Therefore, the disk 13 is well separated from the roller 1 and is supported on the disk holding portion of the lever 5. Therefore, the disc can be reliably pulled into the player's case.

When the disk 13 is placed on the disk holding portion on the lever 5, the roller cam 1a comes to press against the roller cam acting portion 5c, as shown in FIGS. 3 and 5. Therefore, the lever 5 integrated with the action portion 5c moves downward. As described above, the lever 5 is integrally formed with the center holder support part 5a, and the center holder 7 is supported at the center of the center holder support part 5a, and is pressed in the direction of the turntable by the spring 8. Therefore, when the lever 5 comes down, the center holder 7 also comes down and comes into contact with the upper surface of the disk 13.

When the roller 1 rotates roughly, the disk holding part of the lever 5 is positioned below the plane of the turntable 9, and the center hole of the disk 13 is aligned with the central axis 9a of the turntable 9, and the turntable 9 is rotated. be placed on top. When the lever 5 is further lowered, the center holder 7 presses the center of the disk 13 toward the turntable by the repulsive force of the spring 8, so that the disk 13 is pressed onto the turntable 9 with an appropriate force.

When the disc 13 is set on the turntable 9,
The first switch 1) is pressed by the lower end of the lever 5 and turned on, power begins to be supplied to the direct drive motor 10, and the cough motor IO begins to rotate. At this time, the roller l rotates once and the protrusion 12b provided on the second switch 12 comes to face the recess of the cam 1b again, so the second switch 12 is turned off and the loading is stopped. The rotation of the motor 2 stops.

In this way, when the disc 13 is set on the turntable 9 and ready to be played, the tone arm is carried at a predetermined position on the disc, as is well known, and the data is recorded on the disc by the needle attached to the tone arm. The signal that is present is picked up. Since this mechanism is not the subject of the present invention, its explanation will be omitted. When the reproduction of the disc 13 is completed and the disc 13 is taken out of the player, the reverse switch 21 is pressed. When the reverse rotation switch 21 is turned on, the second switch 12 is turned on and the current to the loading motor 2 is reversed.

Therefore, the drum 1 rotates clockwise in FIGS. 3 and 5. Then, the roller cam 1a also rotates in the same direction, the engagement between the roller cam 1a and the roller cam acting portion 5c is disengaged, and the lever 5 slowly rotates clockwise around the support shaft 20 due to the force of the spring 6. do.

When the disc holding part of the lever 5 rises close to the flat surface of the turntable 9, the center holder support part 5a integrated with the lever 5 also rises, and the disc 13 is held by the center holder 7.
The pressing force on will be smaller.

When the lever 5 further rotates clockwise, the disk whose outer periphery protrudes from the turntable is supported by the disk holding portion of the lever 5, and rotates clockwise along with the lever 5 at C. When the lever 5 rotates at a predetermined angle, the outer periphery of the disk comes into contact with the outer periphery of the drum 1, and at this time, the drum l
is rotating clockwise, the disk receives a tangential force from the drum 1. Therefore, the disk 13 moves in the direction in which it is held between the drum 1 and the idler, and then is pulled out of the player while being held between the drum 1 and the idler.

At this time, the recess 1d provided in the disc 13 and the roller 1
The engagement relationship with the disk is the opposite of that when inserting the disk.◎ As described above, this embodiment has a roller and an idler that pull in the disk when inserting the disk, and pull the disk in the ejection direction when ejecting the disk. Because
The operator simply pushes the disc into the player by hand, and the disc is automatically placed on the turntable and playback begins. Furthermore, when the disc is to be removed from the turntable and out of the player, this can be done simply by turning on the reverse switch.

Here, an example of a mechanism for reversing the rotation of the drum 1 and allowing it to rotate clockwise when the reversing switch 21 is turned on will be described. 8 and 9 show the electrical connection relationship of the reversing switch 21, and FIG. 10 and FIG. 1) show the mechanical connection relationship between the reversing switch 21 and the second switch 12.・The reverse switch 21 has the push button 16 and the switch part 1.
7, and the switch section 17 is composed of a moving section 17a and a fixed section 17b. A movable contact 17k is fixed to the movable part 17a at an appropriate position on the surface,
In addition, the extension part of the moving part 17a is shown in FIGS. 10 and 1.
) The extension protrusion 17a' clearly shown in FIG. 1 is integrally formed. On the other hand, the fixed contacts 17c, L7d, 17e, 17f arranged at appropriate intervals are located on the fixed part 17b facing the moving part 17a.
17g and 17h are fixed. Moreover, wiring as shown in the figure is formed between these fixed contacts and the loading motor 2 and the power supply 18.

Now, until the disk 13 is mounted on the turntable 9 and the playback of the disk is completed, the push button 16 is in the released state, that is, in the position shown in FIG. 8. Therefore, the positive side of the power supply 18 is connected to the terminal T of the loading motor 2 through the fixed contact 17h, the movable contact 17i, and the fixed contact 17f.
The terminal T2 is connected to the negative side of the power source 18 through the fixed contact 176, the movable contact 17I, and the fixed contact 17g.

At this time, the extended protrusion 17a' of the movable part 17m is in the position shown in FIG.

Next, when the playback of the disc is finished and the disc is to be removed from the turntable, the push button 16 shown in FIG. 8 is pressed. Then, since the nuclear reversal switch 21 has a self-locking mechanism, the push button 16 is locked in the pressed state as shown in FIG. Terminal T is opposite to the diagram.
, the negative side of the L source 18 is connected, and the terminal T
2 is connected to the positive side of the power supply 18. Further, the extension protrusion 17a' of the movable part 17m protrudes in the direction of the arrow as shown in FIG. Slide. As shown in the figure, the cam 23 has an inclined part that slopes upward to the right, so when the tip 17a'' slides on the inclined part, one of the leaf pieces is pressed, the contact is closed, and the second switch 12 is activated. Therefore, the loading motor 2 starts rotating in the opposite direction and the roller 1 rotates clockwise. Therefore, as described above.

The disk 13 is lifted from the turntable 9 by the lever 5, further engaged with the roller 1, and is sent out of the player by receiving a force from the roller 1.

At the timing when the roller 1 sends the disk 13 out of the player, the shaft lc fixed to the rotating shaft of the roller 1 moves from the solid line position to the dotted line position in FIG. 10.

At this time, the tip of the cough shaft (1c) engages with the tip 17a'' of the movable part 17a, and lifts the tip 17a'' upward. Then, the self-lock of the 5J moving part 17a is released, the push button 16 is placed in the position shown in FIG. 8, and the moving part 1
The extended protrusion 17a' of 7a returns to the position shown in Figure 1).

As described above, the roller 1 rotates in the first direction (for example, counterclockwise) when the disc is mounted on the turntable, and when the disc is taken out of the player.
The rotation may be in a second direction (eg, clockwise).

Although the above embodiment has been described as an example in which the lever 5 and the center holder holding part 5a are integrated, the present invention is not limited to this, and it goes without saying that a different structure may be used. be. For example, as shown in FIG. 12, which is a cross-sectional view similar to FIG.
It will be obvious that the present invention can also be applied to a device in which the cough center holder holding section 30 operates in conjunction with the lever 5 by bringing the cough center holder holding section 30 into contact with the lower side of the center holder holding section 30.

Here, the same reference numerals as in FIG. 2 in FIG. 12 indicate the same or equivalent components.

In addition, WJl and the second switch 1) in the above-mentioned embodiments. It goes without saying that the means for turning on and off 12 is not limited to the above-mentioned means, and other means may be used. The key is to turn on these switches.

It is obvious that the timing for turning off the switch may be set as explained in the above embodiment.

For example, a sensor for detecting a disc may be provided near the roller l, and the second switch 12 may be turned on or off by this sensor.

〔Effect of the invention〕

According to the present invention, when the operator simply pushes the disc into the player, the disc is automatically loaded onto the turntable and playback begins, resulting in very good operability. In addition, since the effects of the present invention described above can be achieved using only rollers for sucking and ejecting the disk, idlers that follow the rollers, levers for raising and lowering the disk, and various switches, the configuration is simple. This has the effect of requiring fewer parts.

Further, since the device of the present invention allows reliable insertion of discs and can be manufactured at low cost, it has great practical effects when used in portable players used outdoors.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a disk insertion mechanism according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1 before disk insertion,
Fig. 3 is the same cross-sectional view when the disc has been inserted, Fig. 4 is a side view of the roller on the belt side before the disc has been inserted, Fig. 5 is the same side view when the disc has been inserted, and Figs. 6 and 7 are A perspective view showing the engagement relationship between the disc and the recess formed in the roller when inserting the disc, and Figures 8 and 9 showing the electrical connections of the reversing switch that is operated when taking the disc out of the player. Figures 10 and 1)
This figure shows the mechanical engagement relationship between the reversing switch and the leaf portion of the second switch, and FIG. 12 shows a sectional view of another player structure to which the present invention is applied. DESCRIPTION OF SYMBOLS 1... Roller, ld... Recessed part, 2... Loading motor, 5... Lever, 5m... Center holder support part, 6... Spring, 7... Center holder,
DESCRIPTION OF SYMBOLS 10... Direct drive motor, 1)... First switch, 12... Second switch, 13... Disk,
21... Reverse switch 1st YjA Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10

Claims (2)

[Claims] (1) Inside the case of the player, a roller provided close to one side of the case, an idler that follows the roller with an appropriate contact pressure, and an idler that extends near the contact area between the roller and the idler. A lever having at least a disc holding part and moving up and down around the turntable, and a driving means for rotating the roller in one direction when inserting a disc and rotating the roller in the opposite direction when ejecting the disc. A disk insertion device characterized in that the disk can be mounted on a turntable by inserting the disk between the roller and the idler. (2) A recessed portion having substantially the same shape as the disk is provided on the surface of the roller, and the recessed portion engages with the disk when the disk is inserted and ejected. Disc insertion device as described in section.