JPH01307947A - Detecting device for operating position of tape player - Google Patents

Abstract

PURPOSE:To miniaturize an operating mechanism, to simplify a wiring, etc., and to easily obtain the certainty for detecting an operating position by detecting each operating position by a mode setting use shift member for determining all the operating positions. CONSTITUTION:In a mode plate 7, a play position detecting use cam part PL' is formed in its other end, and in a kerf-like inside edge side which is formed in the inside of the mode plate 7, a position detecting use cam part FF' of a rapid traverse cam part FF, a position detecting use cam part ST' of a stop cam part ST, etc. are formed, respectively, and also, in an adjacent part running along the moving direction of the mode plate, a rapid traverse position detecting switch SWe, a stop position detecting switch SWf, etc. are provided, respectively. Also, the switch SWe, and the switch SWf are used for detecting loading and eject positions of a cassette, and for detecting an eject completion position of the mode plate 7, as well, respectively. In such a way, a tape player can be miniaturized, the wiring, etc. can be simplified, and also, each operating position can be detected surely.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an operating position detection device for a tape player, and in particular detects each operating position of each mode position of a head and each operating position of a cassette loading position and ejecting position. This relates to improvements in equipment for

[Summary of the Invention] The present invention is capable of detecting each operation position of the player, the play position, the fast forward position, the stop position, and the cassette eject position using substantially one mode setting shift member. .

[Prior Art] Conventionally, in a tape player operating position detection means,
The player's play position and fast-forward position are not detected, but the stop position is detected by a switch when the player moves backward to head play 1, and the eject position is detected by a switch when the eject plate is moved.
A detection means using a separate member is used.

[Problems to be Solved by the Invention] With the above configuration, it is not possible to detect whether or not the play position and the fast forward position are actually located at those positions.

In addition, when detecting the operating position using a switch, the switch can only be placed near each operating member, which not only requires space, but also
There are disadvantages such as complicated wiring.

The purpose of the present invention is to reduce the size of the operating mechanism, simplify the wiring, etc., and ensure the reliability of detecting the operating positions by detecting each operating position using the mode setting shift member that determines all the operating positions described above. It is an object of the present invention to provide an easily obtainable operating position detection device for a tape player.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a shift member moved by a motor-driven power gear, a means for moving the head to each mode position by movement of the shift member, The above-mentioned problems can be solved by providing means for operating the cassette loading/ejecting mechanism by movement of the shift member, and means for detecting each mode operating position and ejection completion position of the head by the shift member. This is an attempt to solve the problem.

[Function] In the tape player operating position detection device described above, when the shift member is moved by the motor-driven power gear, head mode switching and loading/ejecting operations are performed in conjunction with the movement. From the movement position of the shift member, all operating positions of the head plate in each mode and the cassette ejection completion position are detected.

[Embodiment] Figures 1 to 13A and 13B show an embodiment of the present invention. First, the mode switching mechanism of the head will be explained.

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. It is made movable in the mode switching direction shown by the arrow P←Q by the pin 1a, and is biased in the P direction by the spring 4. Further, the plate portion 2
For the purpose described later, 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.

On the back side of the chassis 1, a plate-shaped mode plate 7 is moved in the moving direction P 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 AHB perpendicular to Q.

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

In addition, the mode plate 7 has a play position detection cam portion PL' formed at the other end, and a cutout formed inside the mode plate 7 so as to be parallel to 〇B in the moving direction of the mode plate 7. A position detection cam part FFj of the fast-forward cam part FF, a position detection cam part ST' of the stop cam part ST, and an ejection completion detection cam part EJ are formed on the inner edge of the groove, and the mode plate's Nearby parts along the moving direction include a play position detection switch swd that directly engages with the play position detection cam part PL', and a fast forward position that engages with the fast forward detection cam part FF' via the link member 8. Detection switch S
We, stop detection cam part ST via link member 9
A stop position detection switch SWf that engages with each of the two positions is disposed, respectively.

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 stepped cam portion FF-5T.
A tooth-shaped portion 7c is formed on the edge opposite to the tooth-shaped portion 7.
C is meshed with an output gear of a reduction gear driven by a motor M provided in the chassis 1, that is, a power gear 10.

In addition, in FIGS. 3A to 30, T represents a cassette tape.

The position detection switches swd, swe, and SWf have biasing members such as springs inside, and act to push the switch levers outward.
The link member 8゜9 engaged with SW6 is connected to the third A~
In Figure 30, a clockwise rotating force is acting.

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
W 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, and the roller 5 of the head plate 2 engages with the fast-feeding cam portion F
This shows a state in which the head plate 2 is moved in the direction of arrow P, that is, a fast forward mode position. At this fast-forward mode position, the stop detection switch SW is off, and the fast-forward position detection switch Swe is on.

FIG. 3C shows that the mode plate 7 is moved in the direction of arrow A from the position shown in FIG. 3A by the power gear 1o, and the roller 5 of the head plate 2 is disengaged 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 starting the motor M in the head shift;
FIG. 8 is a flowchart showing an example of a control circuit for stopping the operation.

In FIG. 7, SWa is a play operation switch, SWb
is a fast forward operation switch, SWc is a stop operation switch, the G signal is a signal to rotate the motor to move the mode plate 7 in the direction of arrow A, and the H signal is a signal to move the mode plate 7 in the direction of arrow B. This is a signal that rotates the motor.

In the example of FIG. 7, each switch was turned on by grounding, but by applying a voltage.

You can also turn it on.

Regarding the fast-forward position detection switch SWe, stop position detection switch SW, etc., switches having on/off operations suitable for the control circuit can be arbitrarily selected and used.

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-shaped cam portion 1 for the purpose of rear packing.
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 panel.

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 pivot point.

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.

In addition, the sleeve plate 19a has a protruding piece 19f, which is hooked between the tip of the protruding piece 19f that protrudes through the opening 11i of the rising plate 11a and the chassis 1 side.The spring 20 that is passed between the protruding piece 19f causes the guide arm 19 to rotate downward. At the same time, 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 runs in the cassette insertion direction of the back 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 plates 1, 1d and the operating plate 15,
They are connected so that they can rotate about the pin llf on the receiving plate side as a rotation fulcrum, and a spring 23 is hooked between the end of the operating plate 15 that protrudes outside and the protruding piece 15c of the operating plate 15. has been done.

The back guide 18 is connected and held in a flexible manner to a guide arm 19, and the guide arm 19 is supported by 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 21Q 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 15c 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 W8 moves from the most pressed state to the intermediate position, and this movement starts the motor M and starts 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.
move in the direction of

(5) When the plate 12 moves in the direction of arrow F,
Since the protruding shaft portion 14b of the link member 14 that is engaged with the valley portion of the groove-like cam portion 12e moves along the upward slope of the cam portion 12e, the link member 14 continues to move clockwise (see FIG. 2). ) and is linked to the operation plate 1.
5 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 causes
The cassette 24 is horizontally retracted.

(6) FIGS. 12A and 12B show the state in which the cassette 24 has been completely drawn 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) FIGS. 13A and 13B show the state in which the cassette 24 is lowered after being pulled in.

Even if the operation plate 15 stops moving, the loading/eject plate 12 continues to move in the direction of the arrow F due to the drive of the motor M, so that the guide supported by the horizontal peak of the cam portion 12f on the plate 12 The protruding shaft 19e on the side of the sleeve plate 19a of the arm 19 is removed from the horizontal peak, and the cam portion 12 is moved by the biasing force of the spring 20 (see FIG. 1).
While being guided along the downhill slope of f, the guide arm 1
9 rotates clockwise (Fig. 13B) with the support shaft 19c as a fulcrum, so the back guide 18 supported by it
is lowered while supporting the cassette 24, as shown in FIG. 13B.

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 upright plate 1, 1a.

(8) When the cassette 24 is lowered by the back 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 10, the position detection switch SW described above 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 SWf 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, since position detection is performed by the shift member that determines all operating positions of the tape player, it is possible to downsize the tape player and simplify wiring, etc. In addition, each operating position can be detected reliably.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an operating position detection device for a tape player showing an embodiment of the present invention, FIG. 2 is an exploded perspective view,
FIGS. 3A, 3B, and 3C are plan views showing mode positions of the 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 and loading/eject plate. A side view showing the linked state of the
FIG. 10 is a plan view thereof. Fig. 11A is a plan view of the loading mechanism when inserting a cassette, Fig. 11B is a side view thereof, Fig. 11c is a side view of the back stopper, Fig. 12A is a plan view of the loading mechanism when retracting the cassette, and Fig. 12B is a side view of the loading mechanism. Its side view, 1st
Figure 3A is a plan 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 forwarding position detection, ST
'...Cam part for detecting stop position, 7.
...Mode plate, 7c...
...Tooth profile section, 8, 9...Link member, 1
0......Power gear, M...
・Motor, 11... Frame, 12...
...Loading/eject plate, 1
3... Spring, 14...
・・Link member, 15・・・・・Operation board, 17
・・・・・・・・・Frame, 18・・・・・・・・・
Pack guide, 19...Guide arm,
20... Spring, 21...
...Back stopper, 22...Lever, 24...Cassette. Patent Applicant Clarion Co., Ltd. Agent Patent Attorney Nagai 1) Takeshi Part 7 Figure 7 □] Figure 9 Figure 10

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 means for moving a cassette loading/ejection mechanism by movement of the shift member. An operating position detecting device for a tape player, comprising means for activating the head, and means for detecting each mode operating position and ejection completion position of the head using the shift member.