JPH01307963A - Operating device for tape player - Google Patents

Abstract

PURPOSE:To simplify the mechanism by operating a loading . eject mechanism of a cassette and a mode switching mechanism of a head by moving one shift member linked with a power gear driven by a motor. CONSTITUTION:Link members 8, 9 are provided so as to be freely turnable by supporting shafts 8a, 9a on a plate being separated from a chassis 1, and in a mode plate 7, a tooth form part 7c is formed at an edge side of the opposite side to a stepwise can part FF-ST, and an output gear of a reduction gear driven by a motor M provided on the chassis 1, namely, a power gear 10 is engaged to its tooth form part 7c. In such a state, when a shift member is moved by the power gear 10, a loading . eject mechanism and a mode switching mechanism work, respectively, and leading-in and discharge of a cassette and switching of a mode are executed. In such a way, the mechanism can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an operating device for loading and ejecting a cassette and switching modes in a tape player.

[Summary of the Invention] The present invention is a tape player in which cassette loading/ejection and mode switching are smoothly transmitted in relation to the movement of substantially one member driven by a motor. .

[Prior Art] Conventionally, in a tape player, a loading/ejecting mechanism for loading and ejecting a cassette and a mode switching mechanism for moving a head plate according to modes such as stop, play, and fast forward are operated by separate members. I'm letting you do it.

In addition, the mode switching mechanism uses the attraction force of an electromagnetic plunger and the drive of a motor to hold and switch each mode, making it easy to operate by simply pressing a switch without requiring manual operating force. Mechanisms that allow switching between each mode are often used.

[Problems to be Solved by the Invention] As described above, an automated tape player inevitably has a more complicated structure than a manually operated tape player. It is desired to reduce the use of electromagnetic plungers, which have a complex structure and require a large number of man-hours to manufacture compared to other parts6.Furthermore, in a mechanism in which the head plate is held by suction with an electromagnetic plunger, when the head plate is moved back during ejection, the return spring is It is also considered a problem that this is accompanied by the generation of backward impact noise.

In addition, in the conventional mode switching mechanism, the mode switching from play to fast forward (FF) is from play to stop → FF.
To change the mode from FF to play, the head plate is moved in the order of FF → stop → play, and the switching operation is not direct, but must always go through the stop position.

It is an object of the present invention to provide an operating device for a tape player that can simplify the functions of a loading/eject mechanism and a mode switching mechanism, reduce operating noise, and can directly switch modes depending on the position of each mode. is the main purpose.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a shift member that is moved by a motor-driven power gear, a means for moving the head to each mode position by movement of the shift member, and a shift member that is moved by a motor-driven power gear; The apparatus is characterized by comprising means for operating a cassette loading/ejecting mechanism by movement of a shift member, and position detecting means for stopping the power gear at the mode position and the loading/ejecting position.

[Function] In the tape player operating device configured as described above, when the shift member is moved by the motor-driven power gear, the loading/eject mechanism and the mode switching mechanism operate in conjunction with the movement, and the cassette is pulled in and ejected. and mode switching is performed in a fixed order.

[Embodiment] FIGS. 1 to 13B show an embodiment of the present invention. For convenience of explanation, the configuration of the mode switching mechanism will be described first.

In the figure, 1 is a chassis, 2 is a head plate placed on the front side of the chassis, and this head plate 2
is formed into a substantially L-shape by a plate portion 2a that supports the head 3 and a plate portion 2b bent at right angles from one end of the plate portion 2a, and has guide holes 2c provided at required portions of the plate portion 2a and a chassis side portion inserted therein. arrow P4-8Q by pin 1a of
It is movable in the mode switching direction shown by the spring 4.
is biased in the P direction. Further, at the tip of the plate portion 2b, a roller 5 is provided at the tip of a shaft 6 that protrudes from the guide hole 1b of the chassis to the back side for the purpose to be described later.

On the back side of the chassis 1, a plate-shaped mode plate 7 is moved in the moving direction P4 of the head plate 2 by, for example, a motor M capable of forward and reverse movement for moving the head plate 2.
-) It is provided so as to be movable in the direction A←B perpendicular to Q. 2d and 2e are guide holes provided in the chassis 1 to guide the movement of the mode plate, and 7a and 7b are pins inserted into the guide holes on the mode plate side.

The mode plate 7 has a cam portion FF corresponding to the fast-forward mode and a cam portion ST corresponding to the stop mode formed in a stepped manner on one outer edge parallel to 〇B in the direction of movement. A roller 5 provided at the tip of the plate portion 2b of the plate 1 can engage with stepped cam portions FF and ST of the mode plate 7.

Further, the mode plate 7 has a play position detection cam portion PL″ formed at the other end thereof, and.

parallel to the moving direction AHB of the mode plate 7,
The inner edge of the cut groove formed inside the mode plate 7 includes a position detecting cam part FF' of the fast-feeding cam part FF,
The position detection cam part ST' of the stop cam part ST and the eject!・Cam parts EJ for completion detection are formed respectively,
In addition, in the vicinity of the mode plate along the moving direction,
A play position detection switch SW, which engages directly with the play position detection cam part PL', a fast forward position detection switch SWe, which engages with the fast forward detection cam part FF' via a link member 8, a link member 9. A stop position detection switch SWf that engages with the stop detection cam portion ST' via the stop detection cam portion ST' is provided.

The switch SWe is used for detecting the loading/ejecting position of a cassette, which will be described later.
Wf is also used to detect the ejection completion position of the mode plate 7.

The link members 8 and 9 are separate plates from the chassis 1 (
(not shown) is rotatably provided on support shafts 8a, 9a, and includes cam engaging portions 8b, 9b and switch engaging portions 8c, 9.
They each have c.

The mode plate 7 has a one-stage cam portion FF-8T.
A tooth-shaped portion 7C is formed on the edge opposite to the tooth-shaped portion 7.
An output gear of a reduction gear driven by a motor M provided in the chassis 1, that is, a power gear 10, is meshed with the gear 1c.

In addition, in FIGS. 3A to 3C, T represents a cassette tape.

The position detection switch S W c3 + S W (B
r SW 1 has a biasing member such as a spring inside, which acts to push the switch lever outward.
The link member 8.9 engaged with the switch SW (1r SW 6) is subjected to a force that causes it to rotate clockwise in FIGS. 3A to 30.

Next, the operation and operation of the mode switching mechanism of the tape player configured as described above will be explained.

FIG. 3A shows that the mode plate 7 is
moves in the direction of arrow B, and the roller 5 of the head plate 2
This figure shows a state in which the head plate 2 is engaged with the stop cam ST and the head plate 2 is thereby moved in the direction of the arrow Q, that is, the stop mode position.

In this stop mode position, the engaging portion 9b of the link member 9 is engaged with the stop position detection cam portion ST' of the mode plate 7, and the stop position detection switch S
Wf is on, and the fast forward position detection switch SWe is off.

FIG. 3B shows that the mode plate 7 is
moves in the direction of arrow A from the position shown in FIG. 3A, the roller 5 of the head plate 2 engages with the fast-feeding cam part FF, and the head plate 2 is moved in the direction of arrow P, that is, fast-forwarding. This shows the mode position. At this fast-forward mode position, the stop detection switch SWf is off and the fast-forward position detection switch SWe is on.

3C, the power gear 10 moves the mode plate 7 from the position shown in FIG. 3A in the direction of arrow A, and the roller 5 of the head plate 2 disengages from the mode plate 7.
This figure shows a state in which the head plate is moved in the direction of arrow P so that the shaft 6 comes into contact with the end of the guide hole 1b, that is, the play mode position. In this play mode position, the stop position detection switch SWf and the fast forward position detection switch SWe are turned off, and the play position detection switch SWf is turned on.

FIG. 7 shows an example of a control circuit for starting and stopping the motor M in a head shift, and FIG. 8 is a flowchart thereof.

In FIG. 7, SW8 is a play operation switch.

SWI is a fast forward operation switch, SWo is a stop operation switch, the G signal is a signal that rotates the motor to move the mode plate 7 in the direction of arrow A, and the H signal is a signal that moves the mode plate 7 in the direction of arrow B. This is the signal that causes the motor to rotate.

In the example of FIG. 7, each switch is turned on by grounding, but it can also be turned on by applying a voltage.

As for the fast-forward position detection switch SWe, stop position detection switch SWf, etc., switches having on/off operations suitable for the control circuit can be selected and used as desired.

Next, the configuration of the cassette loading and ejecting mechanism will be explained in Figures 1, 2, 9 and 10.
In the figure, 11 is a frame provided on the chassis 1, and a loading/eject plate 12 movable in the same direction as the mode plate 7 on the back side of the chassis is arranged parallel to a rising plate 11a forming the frame. has been done.

That is, the pin 7b on the mode plate 7 side protruding from the guide hole 2d of the chassis 1, and the lower protruding piece 1 of the plate 12.
The plate 12 is integrated with the mode plate 7 by pressing and holding the lower stopper piece 12b on the plate 12 side to the pin 7b by the biasing force of the spring 13 applied between the plate 12 and the pin 7b. A guide hole 11b provided in the rising plate 11a.

11c, and a pin 12e on the plate side inserted into it,
12d guides the sliding movement of the plate 12. The plate 12 has a groove-like cam portion 1 for the purpose described later.
2e is provided.

On the other hand, a link member 14 is provided between the upright plate 11a of the frame 11 and the plate 12, and is swingably supported on the upright plate 11a by a support shaft 14d. This link member 14 has a bifurcated portion 14a, a protruding shaft portion 14b, and a protruding piece portion 14c.The protruding shaft portion 14b engages with the groove-shaped cam portion 12e of the plate 12, and the cam action causes the link The member 14 is adapted to be swung.

An operating plate 15 is provided on the surface of a receiving plate lid bent at right angles from the upright plate 11a of the frame 11 so as to be slidable in the same direction as the loading/ejecting plate 12. A guide hole 15a provided in this operation plate 15,
15b and the pin lie on the receiving plate lid side inserted into it,
llf guides the sliding movement of the operation plate.

The operation plate 15 has spring latching protrusions 15c, 15d and a stopper protruding piece 15e at required positions, and the spring latching protrusion 15C is attached to the link member 1.
The spring 16 for returning the operation plate 15 is inserted between the protruding piece 15d and the protruding piece 11g provided on the receiving plate lid side.

A guide arm 19 that supports a U-shaped back guide 18 is rotatably supported between the upright plate 11a of the frame 11 and the upright plate 17a of another frame 17 facing at a distance from the upright plate 11a. There is. That is, 19a
, 19b are sleeve plates on the guide arm side, 19c and 19d are support shafts provided on the sleeve plates respectively, and these 19c and 19
d is inserted through and supported by the upright plates 11a and 17a, and serves as a fulcrum for one rotation.

The sleeve plate 19a is provided with a protruding shaft 19e at its tip, which is engaged with a cam portion 12f on the outer edge of the loading/eject plate 12 through a notch 11h of the rising plate 11a.

Further, the sleeve plate 19a has a protruding piece 19f, which is hooked between the tip protruding through the opening 11i of the rising plate 11a and the chassis 1 side, and is attached by a spring 20 that rotates the guide arm 19' downward. While applying force, the protruding shaft 19e is brought into pressure contact with the cam portion 12f of the plate 12.

The guide arm 19 is provided with a guide groove 19g that passes in the cassette insertion direction of the pack guide 18, and one end of a lever 22 is freely connected to a back stopper 21 that is slidably provided in the guide groove 19g. . That is, the pin 21a provided on the back stopper 21 is inserted into the guide hole 22a on the lever 22 side. The other end of the lever 22 is inserted between the receiving plate lid and the operating plate 15, is connected so as to be rotatable about a pin llf on the receiving plate side as a rotation fulcrum, and projects outside the operating plate 15. A spring 23 is hooked between the end and the projection 15c of the operation plate 15.

The pack guide 18 is connected and held in a flexible manner to a guide arm 19, and the guide arm 19 is connected to support shafts 19c and 19d.
When it is rotated using the fulcrum as a fulcrum, it is pushed down by it.

Next, the operation and operation of the loading/ejecting mechanism will be explained.

(1) As shown in FIGS. 11A and 11B, when the cassette 24 is inserted into the pack guide 18 until its tip touches the stopper plate 21b of the back stopper 21, the engager 21c of the back stopper 21 is placed on the cassette side. hub hole (not shown).

(2) Push the cassette slightly from the insertion position above.
The back stopper 21 is pushed in the direction of the arrow C, and the lever 22 rotates in the direction of the arrow with the pin llf as a fulcrum, so the operating plate 15 moves in the direction of the arrow E.

(3) As the operation plate 15 moves, the link member 14 linked to the protrusion 15e rotates clockwise about the support shaft 14d in FIG. 2, and the protrusion 14c moves. , the link member 14 rotates clockwise, and the switch S
The lever We moves from the most pressed state to the intermediate position, and this movement activates the motor M to start loading.

Note that the movement of the operation plate 15 is stopped by the protrusion 15e engaging with the step 12g of the loading/eject plate 12, but when the motor M is started, the plate 12
moves in the direction of arrow F, so the restraining action is released.

(4) That is, when the motor M starts, the
As explained with reference to Fig. A, the power gear 10 moves the mode plate 7 in the direction of the arrow A, but since the loading/eject plate 12 is integrally connected to the mode plate 7, the plate 12 moves in the direction of the arrow F.
(5) When the plate 12 moves in the direction of arrow F,
The protruding shaft portion 14b of the link member 14, which is engaged with the trough portion of the groove-like cam portion 12e, moves along the upward slope of the cam portion 12e, so that it is a link member.

14 continues to rotate clockwise (see Figure 2), the operation plate 15 linked thereto further moves in the direction of arrow E, and at the same time the lever 22 also rotates in the direction of arrow E, and the back stopper 21, the cassette 24 is horizontally pulled in. 6 (6) Figures 12A and 12B show the state in which the cassette 24 has been completely pulled in.

When the cassette retraction is completed, the protruding shaft portion 14b of the link member 14 rides on the peak of the cam portion 12e on the plate 12, and the rotation of the link member 14 is stopped, so that the movement of the operation plate 15 is also stopped.

Also, when the cassette retraction is completed, the guide arm 1
The protruding shaft 19e of the sleeve plate 19a of No. 9 is located at the tip of the horizontal peak of the cam portion 12f on the outer edge of the plate 12 (see FIG. 12B).

(7) Figures 13A and 13B show the state in which the cassette 24 is lowered after it has been pulled in. 6 Even if the operation plate 15 stops moving, the motor M drives the loading - The eject plate 12 continues to move in the direction of arrow F.

The protruding shaft 19e on the sleeve plate 19a side of the guide arm 19, which was supported by the horizontal peak of the cam portion 12f on the plate 12, is removed from the horizontal peak, and the cam portion is moved by the biasing force of the spring 20 (see FIG. 1). While being guided along the downward slope of 12f, the guide arm 19 rotates clockwise (Fig. 13B) about the support shaft 19c, so the pack guide 18 supported by it rotates as shown in Fig. 13B. It descends with the cassette 24 supported.

Note that the protruding shaft 19e of the sleeve plate 19a that has been removed from the downward slope of the cam portion 12f of the plate 12 is retained in the notch portion 11h of the frame rising plate 11a.

(8) When the cassette 24 is lowered by the pack guide 18, the mode plate 7 is
When the stop mode position shown in Fig. A is moved from there to the play position shown in Fig. 3C by the power gear 1o, the above-mentioned position detection switch SWt is turned on,
By stopping the motor M, the movement of the mode plate 7 is stopped.

Note that while the mode plate 7 is moving after the cassette is lowered, the loading/eject plate 12 only moves in the direction of arrow F together with the mode plate 7.
There is no effect on other parts.

(9) Next, when ejecting the cassette, turn on the eject switch (not shown) and drive the motor M in the reverse direction.

When the motor is driven in the reverse direction, an operation opposite to that at the time of loading described above is performed, and each member is returned from the state shown in FIGS. 13A and 13B to the state shown in FIGS. 11A and 11B.

At this time, the mode plate 7 is at the movement completion position (Fig. 3A).
Then, the link member 9 is rotated by moving the engaging portion 9b to the ejection completion position.

When the lever of the switch SW moves from the intermediate position to the outermost position, the motor M stops, and ejection is completed.

In the above embodiment, the separately manufactured mode plate and loading/eject plate are combined together, but they can be configured as one shift member.

[Effects of the Invention] As described above, according to the present invention, the cassette loading/ejecting mechanism and the head mode switching mechanism are operated by movement of one shift member linked to a motor-driven power gear. Therefore, the operation mechanism of the tape player can be greatly simplified.

Also, compared to the conventional mechanism that uses a mechanism such as a plunger to switch modes, the mechanical part is limited to a linkage mechanism between the shift member and the head plate, and the rest is an electrical control circuit that starts and stops the motor. Since the present invention can be configured, it is possible to obtain an operating device for a tape player that makes no operating noise.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an operating device of a tape player showing an embodiment of the present invention, FIG. 2 is an exploded perspective view, and FIGS. 3A, 3B, and 3C are mode positions of a mode switching mechanism. FIG. 4 is a plan view of the mode plate, FIGS. 5 and 6 are plan views of the link member, FIG. 7 is a control circuit diagram, FIG. 8 is a flowchart, and FIG. 9 is a mode plate. Fig. 10 is a plan view thereof, Fig. 11A is a plan view of the loading mechanism when inserting a cassette, Fig. 11B
Figure 11C is a side view of the backstopper, Figure 12A is a plan view of the loading mechanism when the cassette is retracted, Figure 12B is a side view thereof, and Figure 13A is a plane view of the loading mechanism when the cassette is lowered. FIG. 13B is a plan view thereof. 1.......Chassis, 2........
Head plate, 3...Head, 4...
・・・・・・Spring, FF・・・・Rapid cam part, ST・・・・・・Stop cam part,
PL'・・・・・・Cam part for detecting play position, F
F' ・・・・・・Cam part for fast forward position detection, S
T'・・・・・・Cam part for detecting stop position, 7
...Mode plate. 7c......Tooth profile part, 8, 9...
...Link components. 10... Power gear, M...
...Motor, 11... Frame, 12.
・・・・・・Loading/eject plate,
13... Spring, 14...
... Link member, 15 ...... Operation board, 1
7・・・・・・・・・Frame, 18・・・・・・・・・
・Pack guide, 19...Guide arm, 20...Spring, 21...
...Backstopper, 22...Lever, 24.Old...Cassette. Patent Applicant Clarion Co., Ltd. Agent Patent Attorney Nagai 1) Takeshi Part 7 Figure 10 Figure 12B

Claims (1)

[Scope of Claims] A shift member moved by a motor-driven power gear; means for moving the head to each mode position by movement of the shift member; and actuation of a cassette loading/ejection mechanism by movement of the shift member. and position detection means for stopping the power gear at the mode position and the loading/eject position.