JPH0450600Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an autoloading device used in a magnetic tape recording or reproducing machine, typified by a cassette-type music tape or the like.

(Prior Art) Conventionally, this type of autoloading device slides a timing plate based on the rotational driving force of a motor, etc., and loads a cassette-type magnetic tape (hereinafter simply cassette The device is configured to control the loading or unloading of tape (abbreviated as tape). The sliding operation of the timing plate has come to be performed either directly by a loading gear etc. that is linked to the motor, or indirectly through a loading plate etc. that is slid by the loading gear. There is.

(Problems to be Solved by the Invention) In the conventional autoloading device described above, when the cassette tape is pulled in when loading it or when it is ejected from this loading state, there is a possibility that the cassette tape may be affected by some cause. Even when a load is applied that would impede its movement, the autoloading device may continue its operation, which could result in failure or malfunction of the recording/playback device.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, an autoloading device for a cassette-type magnetic tape recording/playing machine according to the present invention is constructed as follows.

In other words, as shown in FIGS. 1 and 2, an autoloader is a type in which the operation for loading or ejecting a cassette-type magnetic tape is performed by sliding the timing plate 2 based on the rotational drive of a motor. The loading device includes a loading plate 10 and an ejecting plate 15 that are slidable in the same direction as the timing plate 2, and both plates 1.
0 and 15 are connected to each other so that they always maintain an integral relationship and slide in the same direction, and are provided with a spring 20 that can allow relative sliding of both plates 10 and 15 by elastic deformation. .

The loading plate 10 and the ejecting plate 15 selectively receive sliding forces in opposite directions based on the rotational drive of the motor, and the sliding movement of one of the plates receiving this sliding force causes the spring 20 to The timing plate 2 is arranged so as to cause the other plate to follow the movement through the timing plate 2, and to transmit the movement of the following plate to the timing plate 2.

(Function) According to the above structure, when a load is applied to the timing plate 2 that prevents its sliding operation during the loading or ejecting operation of the cassette tape, the loading plate 10 or the timing plate 2 is Of the ectoplates 15, slide only one plate that is receiving the driving force at the time, and then record.
This makes it possible to avoid situations such as failures due to malfunction or forced operation of the playback machine.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings.

Part 1 showing the main parts of a cassette tape playback machine.
In the figure and FIG. 2, which is an exploded perspective view of the main components of FIG. 1, the timing plate 2 is assembled to the chassis 1 so as to be slidable downward in the drawing from the state shown in FIG. In other words,
A guide pin 28 of the chassis 1 is engaged with a guide hole 27 formed long in the side plate portion of the timing plate 2 along the sliding direction.
It slides along the guide pin 28 of the chassis 1 within a range of . Further, an opening 3 is formed on the upper surface of the timing plate 2, with which a roller 7b of a catch arm 7, which will be described later, engages, and a roller 5b of a cassette tray arm 5, which will be described later, is formed on the side surface of the timing plate 2.
A cam hole 4 is formed in which the cam hole 4 is engaged.

As is clear from FIGS. 1 and 3, the cassette tray arm 5 is rotatably attached to the chassis 1 by a shaft 5a, and a cassette tape (not shown) is attached to the cassette tray arm 5. A cassette tray 6 into which the cassette tray 6 is inserted is hinged for relative rotation. In addition, the above-mentioned catch arm 7 is attached to a part of the chassis 1 by the shaft 7.
A roller 7b is mounted so as to be rotatable in the clockwise direction from the state shown in FIG.
The other end has a catch 8 for receiving the cassette tape inserted into the cassette tray 6.
is engaged in. This catch 8 is attached to the cassette tray arm 5 so that it can slide upward in the drawing from the state shown in FIG. 1, and when a cassette tape is inserted into the cassette tray 6, the catch 8 It engages with the center hole of the tape reel to receive the cassette tape.

In FIG. 1, on the right side of the timing plate 2, there is a loading plate 10 located on the same plane as the bottom plate 9 of the timing plate 2, and an eject plate 15 located on the upper surface of the loading plate 10. The timing plate 2 is attached to the chassis 1 so as to be slidable in the same direction as the timing plate 2. That is, the loading plate 10 and the eject plate 15 have guide holes 12 extending long along the sliding direction thereof.
17 are formed respectively, and guide pins 24 erected on the chassis 1 are engaged with these guide holes 12 and 17, respectively. Thereby, each plate 10, 15 has its guide hole 1
2,17 along the guide pin 24 of the chassis 1.

As is clear from FIGS. 1 and 2, the notch end surface 10a formed in the loading plate 10 is positioned so as to be able to come into contact with the end surface 9a of the bottom plate 9 of the timing plate 2, and Projection piece 10b of loading plate 10
is positioned so as to be able to come into contact with the end surface 15a of the eject plate 15. Further, the protrusion 9b formed on the bottom plate 9 of the timing plate 2 is positioned so as to be able to abut against the protrusion 15b of the eject plate 15. A power spring is disposed between a spring locking portion 10c integrally formed by bending the projecting piece 10b of the loading plate 10 and a spring locking portion 15c formed by bending upward from the eject plate 15. It is multiplied by 20. This power spring 2
The loading plate 10 and the eject plate 15 are held in a state in which the protruding piece 10b and the end surface 15a are in contact with each other due to the elasticity of 0, and both plates 10 and 15 are always maintained in an integral relationship. However, in FIG. 1, both plates 10 and 15 are in a state where they are slightly displaced relative to each other in the sliding direction against the elasticity of the power spring 20 for reasons to be described later.

A loading gear 21 is arranged on the lower surface of the loading plate 10 and eject plate 15, which is rotatable in the direction of the arrow (clockwise) in FIG. 1 by receiving power from a motor (not shown). . The pin 21a protruding from the upper surface of the loading gear 21 is connected to the loading gear 21.
As the loading plate 10 rotates, the loading plate 10
or the bent portion 16 of the eject plate 15, and applies a sliding force in opposite directions to each of the plates 10, 15. Further, a switch operation piece 11 is integrally bent upward on the loading plate 10, and this switch operation piece 11 comes into contact with the switching lever 22a of the switch 22 assembled on the chassis 1 side. located within easy access. In addition,
This switch 22 is connected to the loading gear 21 mentioned above.
This allows the electric circuit of the motor that transmits rotational force to be turned on or off.

It is assumed that the autoloading device configured as described above is currently in the eject state shown in FIGS. 1 and 3. Therefore,
When a cassette tape (not shown) is inserted into the cassette tray 6 shown in FIG. In response to the insertion force, it slides slightly upward in FIG. 1 with respect to the cassette tray arm 5. As the catch 8 slides, the catch arm 7 rotates clockwise in FIG. 1 about its shaft 7a, and the timing plate 2 moves downward in FIG. 1 through the roller 7b of the catch arm 7. The slide is operated slightly. As a result, the end surface 9a of the bottom plate 9 of the timing plate 2 pushes the notch end surface 10a of the loading plate 10, and the loading plate 10 also slides slightly downward in FIG. Along with this, loading plate 1
The switch operation piece 11 of the switch 22 is removed from the switching lever 22a of the switch 22, and the switch 22, which had been keeping the electric circuit of the motor that is the drive source of the loading gear 21 in the OFF state, is turned on.

By switching the switch 22, the loading gear 21 starts rotating in the direction of the arrow in FIG. 1, and the end surface 13 of the loading plate 10 is pushed by the pin 21a of the loading gear 21. As a result, loading plate 10
As shown in FIG. 4, the eject plate 15 slides in an integral relationship with each other with the projection 10b and end surface 15a in contact with each other due to the elasticity of the power spring 20. and,
In this state, the protrusion 15b of the eject plate 15 is in contact with the protrusion 9b of the bottom plate 9 of the timing plate 2, and as a result, the timing plate 2, loading plate 10, and eject plate 15 are integrated. The slide continues downward in FIGS. 1 and 4.

As the timing plate 2 slides, the catch arm 7 rotates about its shaft 7a in the clockwise direction,
The cassette tape is transferred through the catch 8 to the first
It is pulled upward in FIGS. 4 and 4. and,
At the time when this cassette tape retraction is completed, the roller 5 of the cassette tray arm 5
b is located at a position immediately before the inclined portion 4a of the cam hole 4 in the timing plate 2, and as the timing plate 2 further slides to the position shown in FIG. Move as shown in Figure 6. This allows the cassette tray arm 5 to
It rotates about the shaft 5a from the state shown in FIG. 3 to the state shown in FIG. 6. As a result, the cassette tray 6 connected to the cassette tray arm 5 is lowered into the player together with the cassette tape, and the cassette tape is then loaded.

In the cassette tape mounted state shown in FIGS. 5 and 6, the timing plate 2 is restricted by the cassette tray 6, cassette tray arm 5, etc. and cannot slide any further. At the same time, the protrusion 15b of the bottom plate 9 of the timing plate 2 is
The position of the eject plate 15, which is in contact with the eject plate 15, is also restricted in the state shown in FIG. However, with the cassette tape attached, the loading plate 10 is held at a position where it has slid further downward in the drawing against the elasticity of the power spring 20, as shown in FIG. Therefore, the elastic force of the power spring 20 acts on the timing plate 2 from the protrusion 15b of the eject plate 15 through the protrusion 9b of the timing plate 2. Therefore, the elastic force of the power spring 20 pulls the roller 5b of the cassette tray arm 5 toward the right in FIG. 6 through the inclined portion 4a of the cam hole 4 in the timing plate 2. In other words, due to this action, the cassette tray arm 5 receives the force necessary to maintain the proper attachment of the cassette tape in the cassette tray 6.

Furthermore, in the state in which the cassette tape is attached as shown in FIG. 5, the transmission of rotation from the motor to the loading gear 21 is interrupted by means such as disengaging the gears (not shown); A reaction force based on the elasticity of the power spring 20 acts on the pin 21a of the loading gear 21 through the loading plate 10, and the loading gear 21 is rotated clockwise from the state shown in FIG. There is a starting force at work. Therefore, when the braking force that had been acting on the loading gear 21 is released based on the eject operation after the cassette tape has been played, the loading gear 21 first receives the elasticity of the power spring 20. After that, rotation is transmitted from the motor due to meshing of gears (not shown), and continuous rotation begins. In other words, when the cassette tape is attached as shown in FIG. 5, the elastic action of the power spring 20 has both the function of holding the cassette tape in the attached state and the function of applying starting force to the loading gear 21. That's what I'm doing.

Now, when the eject operation is performed from the mounted state of the cassette tape shown in FIG.
This time, the eject plate 15 is pulled upward in FIG.
The three members work together to slide upward from the state shown in Figure 5. Accordingly, first, the cassette tray arm 5 rotates about its shaft 5a from the state shown in FIG. 6 to the state shown in FIG. lifted from. As the timing plate 2 continues to slide, the catch arm 7 rotates counterclockwise around its shaft 7a from the state shown in FIG. 5 or 4, and the catch 8 returns to the position shown in FIG. 1. Then, the cassette tape in the cassette tray 6 is ejected.

In the eject state shown in Fig. 1,
Contrary to the case when the cassette tape is attached as shown in FIG. 5, the eject plate 15 is slid further upward in FIG. 1. As a result, the elasticity of the power spring 20 acts to pull the loading plate 10 upward in FIG. An upward biasing force shown in FIG. 1 is applied to the timing plate 2 through the timing plate 9a. Therefore, a counterclockwise rotational force is applied to the catch arm 7 about the axis 7a thereof, and the catch 8 has a sense of moderation when the cassette tape inserted into the cassette tray 6 is rotated. I have been given the strength to accept it.

Next, a case will be explained in which when the cassette tape retracting operation is started as described above from the eject state shown in FIG. 1, a load is applied to the timing plate 2 that prevents the sliding operation. . For example, even though the cassette tape retraction operation has started,
If the operator continues to hold the cassette tape in his hand, the timing plate 2 is prevented from sliding through the catch 8 and the catch arm 7. For this reason, the protrusion 15 is attached to the protrusion 9b of the bottom plate 9 of the timing plate 2.
The eject plate 15 that b is in contact with is also prevented from sliding. Therefore, under such conditions, as the loading gear 21 rotates, only the loading plate 10 slides against the elasticity of the power spring 20, as shown in FIG. Become.

Furthermore, when the eject operation is performed from the cassette tape attachment state shown in FIG. Only the eject plate 15, leaving the eject plate 10, slides upward in FIG. 5 against the elasticity of the power spring 20.

In this way, when a load is applied to the timing plate 2 that prevents its sliding movement, only the loading plate 10 or the ejection plate 15 is slid.
You can avoid accidents at that time,
This makes it possible to avoid situations such as failures due to malfunctions or forced operation of the recorder/player.

(Effect of the invention) As described above, according to the invention, one of the loading plate and eject plate slides by directly receiving the rotational driving force of the motor, while the other plate follows through the spring. However, since the timing plate is slid by the movement of the following plate, for example, if a load is applied to the timing plate that prevents it from sliding, the rotational driving force of the motor will be reduced. Only the loading plate or eject plate that is sliding due to the load directly continues to slide while elastically deforming the spring, and the other plate and timing plate that were following this stop at the position where they received the load. It will stop. Therefore, the situation where the timing plate is forced to slide against such a load is eliminated, and failures and malfunctions of the device can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view showing a part of a cassette tape recording/playback machine;
Figure 2 is an exploded external perspective view of the main parts in Figure 1, Figure 3 is a side view of the relationship between the timing plate and the cassette tray arm, seen from the left side of Figure 1, and Figure 4 is an auto FIG. 5 is a plan view showing the operating state of the loading device corresponding to a part of FIG. 1; FIG. 5 is a plan view showing the loading state of the cassette tape corresponding to a part of FIG.
The figure is a side view showing the relationship between the timing plate and the cassette tray arm when the cassette tape is installed, corresponding to figure 3, and figure 7 is a load that prevents the timing plate from sliding when the autoloading device is operating. FIG. 2 is a plan view partially corresponding to FIG. 1, showing a state when . 2...Timing plate, 10...Loading plate, 15...Eject plate, 2
0...Power spring.

Claims (1)

[Claims for Utility Model Registration] In an autoloading device of the type in which an operation for loading or ejecting a cassette-type magnetic tape is performed by sliding a timing plate based on the rotational drive of a motor, A loading plate and an eject plate that can slide in each direction are connected to each other so that these two plates always maintain an integral relationship and slide in the same direction, and the relative sliding of these two plates is elastically controlled. The loading plate and the ejecting plate selectively receive sliding forces in opposite directions based on the rotational drive of the motor, and one of the loading plates receives the sliding force. A cassette-type magnetic tape recording/playback machine, characterized in that the slide operation of one plate causes the other plate to follow through the spring, and is arranged so that the following movement of the plate is transmitted to the timing plate. autoloading device.