JP2526775B2 - Cassette loading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device for mounting a cassette used in a cassette tape recorder or the like in a cassette mounting portion.

[0002]

2. Description of the Related Art As a cassette loading device for mounting a tape cassette in a cassette mounting portion in a cassette tape recorder, conventionally, a cassette is placed on a tray that reciprocates in the horizontal direction and an operation button is pushed to move the tray. It is known that the device is configured to be drawn into the main body case.

In such a conventional cassette loading apparatus, since the tray is integrated with a deck board provided with a tape driving mechanism such as a pinch roller and a capstan motor, it moves together with the deck board. It is done like this. Further, a rotating lever for pressing and holding the cassette against the cassette mounting portion on the deck board is adapted to rotate at a fulcrum provided on the deck board.

[0004]

As described above, in the conventional cassette loading device, the deck substrate itself is moved, so that the load of the moving system is large. Further, since the wiring bundle that electrically connects the deck board and the printed board is dragged and moved as the deck board moves, the movement operation of the deck board is not smoothly performed, and further, The wire bundle also needed a long thing. Further, since the vibration occurs when the deck board moves, this vibration adversely affects the mechanical section.
Further, since the rotating lever is provided on the deck substrate, vibration of the rotating lever occurs when moving, which causes noise. There is also a problem that the cassette cannot be seen from the outside because the cassette is pulled inside the main body case.

The present invention proposes a cassette loading device which can solve the above problems.

[0006]

The cassette loading device of the present invention comprises a movable base which is reciprocally movable in the horizontal direction, one end side of which is supported by the movable base and the other end side of which is vertically rotatable. A cassette holding plate, an urging means for urging the cassette holding plate upward, and a tape drive mechanism are provided, and the upper surface serves as a cassette mounting portion, which is provided below the moving table at an angle to the horizontal direction. and a substrate which, when the moving table is moved in the forward direction, this movement
It is designed to rotate in conjunction with the movement of the table, and by this pressing the upper surface side of the cassette downward,
While holding the cassette between the cassette holding plate and
This cassette holding plate is rotated downward against the said biasing means, a cassette being this clamped, characterized in that a and pivoting lever which is mounted in the cassette mounting portion.

[0007]

According to the cassette loading device of the present invention,
Since the deck board does not move, the load of the moving system is small when moving the moving table, and there is no vibration.
Therefore, the moving base can be moved smoothly.
Further, since the deck boards are arranged obliquely, the cassette can be easily viewed from above.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a cassette tape recorder will be described with reference to FIGS.

1 to 3, a fixed chassis 1 is fixedly provided inside a cabinet (not shown) of a cassette tape recorder. The fixed chassis 1 is provided with a motor 2, a gear mechanism 3, a deck substrate 4, a support member 5, a locking recess 6, a stopper 7, and the like.

A movable table 9 is provided above the fixed chassis 1 so as to be capable of reciprocating in the horizontal direction indicated by arrows a and b. Reference numeral 10 denotes a cassette holding plate, which is attached to the movable table 9 and the shaft 1
It is provided so as to be rotatable in the up-and-down direction indicated by arrows c and d with 1 as a fulcrum, and a guide shaft 12 is provided on the lower surface. Thirteen
Is a cassette, which is placed on the cassette holding plate 10.

In addition to the above, the movable base 9 is provided with a long hole 14 in which the shaft 11 is slidably fitted, and a long hole into which the guide shaft 12 is slidably fitted, on its side portion. 15, spring 8
(See FIG. 2), a cassette pressing limiter plate 16, a locking lever 17, a spring 18 and the like are provided, and further, a moving table 9
A rack gear 19, a stopper 20 and the like are provided on the lower surface of the.

In the fixed chassis 1, the rotation of the motor 2 due to the normal rotation or the reverse rotation is transmitted to the gear 21 at the final stage through the gear mechanism 3, and the gear 21 meshes with the rack gear 19. 9 is moved in the directions of arrows a and b. Also, this gear 21
Is provided with a lock release cam 22 so as to rotate coaxially.

The deck board 4 has a magnetic head 23,
A cassette positioning pin 24, a capstan 25, a reel base 26, a tape drive motor 27, and the like are provided, and a mechanism such as a pinch roller (not shown) is provided outside the cassette positioning pin 24. The upper surface of the deck board 4 is a cassette mounting portion 28, and the deck board 4 is mounted on the fixed chassis 1 in a tilted manner so that the cassette mounting portion 28 is tilted with respect to the horizontal direction as shown in the drawing.

On the support member 5, a substantially L-shaped rotating arm 29 for pressing the cassette is rotatable about a shaft 30 provided at the bent portion in the vertical direction as shown by arrows e and f. Installed on. This rotating arm 29
Comprises a pressed arm portion 29a and a cassette pressing arm portion 29b. A pin 31 is provided at the tip of the arm 29a, and a pressing member 32 having pressing protrusions 32a and 32b at both ends is rotatably attached to the tip of the arm 29b with a shaft 33 as a fulcrum. .

In the movable table 9, the elongated hole 15 has a horizontal short hole 15a and an arcuate hole 15b extending in a substantially vertical direction, and the guide shaft 12 is fitted into the hole 15a so that the elongated hole 1
When the shaft 11 is fitted to the cassette 4, the cassette holding plate 10
Is kept horizontal. The limiter plate 16 has pins 3 provided on the limiter plate 16.
By fitting 4 into a long hole 35 provided in the moving table 9, it is possible to move in the directions of arrows a and b. Also,
A limiter spring 36 is provided between the limiter plate 16 and a protrusion 37 provided on the moving table 9, and the limiter plate 16 is biased by the spring 36 in the direction of arrow a.

The locking lever 17 is provided so as to be rotatable in the directions of arrows g and h about a shaft 38 as a fulcrum, and the spring 18 is provided.
Is urged in the direction of arrow g. The shaft 38 is provided on a support plate 39 provided on the moving table 9, and the spring 18 is provided.
Is wound around a pin 40 provided on the moving table 9.

In FIG. 2, the spring 8 is wound around a pin 41 provided on the moving table 9, and one arm portion 8a of the spring 8 abuts on the guide shaft 12 to attach the guide shaft 12 in the direction of arrow i. I am energetic.

Further, as shown in FIG. 4, guide rollers 4 are provided at four locations on the upper portions of both side edges of the fixed chassis 1.
2 is provided, and a guide groove 43 on which the guide roller 42 rolls is provided at the bottom of the moving table 9. Further, hook-shaped engaging portions 44 are provided on both sides of the fixed chassis 1, and the engaging portions 44 are engaged with stepped portions 45 provided on both sides of the moving base 9. By the guide mechanism shown in FIG. 4, the movable table 9 can be smoothly moved on the fixed chassis 1 in the directions of the arrows a and b.

FIG. 5 shows the appearance of the entire cassette tape recorder 46 in which the cassette loading device shown in FIGS. 1 to 3 is incorporated. The cassette loading device is provided inside the cassette accommodating portion 47. As shown in FIG. 7, which will be described later, when the cassette 13 is mounted in the cassette mounting portion 28, the cassette 13 is mounted obliquely as shown in the drawing. Therefore, by providing the window 48 on the upper surface of the cassette housing portion, It is possible to view the cassette 13 through the window 48.

Next, the operation of the above configuration will be described with reference to FIG.
This will be described with reference to FIGS. 2, 6 and 7.

In FIG. 1, when the cassette 13 is placed on the cassette holding plate 10 and the operation button (not shown) is pushed, the motor 2 is rotated. This rotation is transmitted to the gear 21 via the gear mechanism 3 and further transmitted to the rack gear 19, so that the movable table 9 moves in the direction of arrow a. Then, first, as shown in FIG. 6, the shaft 11 comes into contact with the support member 5 and the limiter plate 16 comes close to the arm portion 29 a of the rotary arm 29. Further, the locking lever 17 slides on the fixed chassis 1 and moves to the vicinity of the locking recess 6. When the shaft 11 comes into contact with the support member 5, the cassette holding plate 10 slightly moves in the direction of arrow b with respect to the moving table 9,
The guide shaft 12 separates from the horizontal hole 15a of the elongated hole 15 and enters the arc-shaped hole 15b.

When the movable table 9 further moves in the direction of arrow a, the limiter plate 16 presses the pin 31 of the arm portion 29a against the spring 36, so that the rotating arm 29 is rotated by the shaft 30.
Is rotated in the direction of arrow e (counterclockwise) with the fulcrum as the fulcrum. By this rotation, the pressing member 32 presses the upper surface of the cassette 13, so that the guide shaft 12 moves down the hole 15b in the direction of arrow j against the spring 8 (see FIG. 2). Therefore, the cassette holding plate 10 rotates in the direction of arrow c with the shaft 11 as a fulcrum and approaches the cassette mounting portion 28. When the movable table 9 still moves in the direction of the arrow a, the capstan 25, the cassette positioning pin 24, the head 23, etc. enter the cassette 13, and the cassette 13 is mounted on the cassette mounting portion 28 as shown in FIG. At this time, the locking lever 17 falls into the locking recess 6 by the biasing force of the spring 18 to lock the movable table 9 and turns on a leaf switch (not shown). Further, the stopper 7 and the stopper 20 come into contact with each other.

In the state of FIG. 7, the pressing member 32 of the rotating arm 29 presses the upper surface of the cassette 13 by the urging force of the limiter spring 36, and holds the cassette 13 against the spring 8.

As described above, the rotating arm 29 has the shaft 30.
Is used as a fulcrum, and based on this rotation, the cassette holding plate 10 is rotated with the shaft 11 abutting the support member 5 as a fulcrum. That is, the rotating arm 29 and the cassette holding plate 10 simultaneously rotate about different fulcrums. In this case, if the pressing member 32 is fixed, the cassette 13 by the pressing member 32 during the above-mentioned turning operation.
The pressing operation against the upper surface of the is not performed smoothly and vibration or the like occurs. However, in the present embodiment, the pressing member 32
Is rotatable about the shaft 33 as a fulcrum.
The pressing operation is smoothly performed by absorbing the deviation between the two fulcrums.

Next, in the state of FIG. 7, when the operation button is pushed to release the mounting of the cassette 13 in the cassette mounting portion 28, the motor 2 rotates in the reverse direction. For this reason, since the gear 21 rotates in the opposite direction, the cam 22 also rotates accordingly, and this cam 22 pushes up the locking lever 17 against the spring 18 in the arrow h direction, whereby
The engagement between the engagement lever 17 and the engagement recess 6 is released.

Therefore, the movable table 9 starts moving in the direction of arrow b by the engagement of the gear 21 and the rack gear 19.
By this movement, the limiter plate 16 separates from the arm portion 29a, and the guide shaft 12 fitted in the hole 15b rises in the direction of arrow i due to the urging force of the spring 8.
The cassette holding plate 10 also rotates about the shaft 11 as a fulcrum in the direction of arrow d and leaves the cassette mounting portion 28.

When the moving table 9 further moves in the direction of arrow b, the cassette holding plate 10 further rotates in the direction of arrow d, so that the cassette 13 moves away from the capstan 25, the cassette positioning pin 24, etc. 15
The guide shaft 12 fitted in b reaches the upper end of this hole 15b, further enters into the hole 15a, and the state shown in FIG. 1 is again obtained.

[0028]

According to the present invention, since the substrate is fixed, it is possible to reduce the load on the motor that drives the moving table, to shorten the wiring bundle, and to move the substrate. There is no fear that vibration will occur and adversely affect the mechanical section.

Further, since the cassette is supported from the upper and lower surfaces by the rotating lever and the urging means , smooth and stable loading can be performed. Further, since the substrate is provided obliquely, the mounted cassette can be easily seen from the outside.

[Brief description of drawings]

FIG. 1 is a right side view showing a cassette loading device in an embodiment in which the present invention is applied to a cassette tape recorder before a cassette is loaded.

FIG. 2 is a left side view showing the cassette loading device shown in FIG. 1 in a state before loading a cassette.

FIG. 3 is a plan view showing the cassette loading device shown in FIG. 1 in a state before loading a cassette.

4 is a front view showing a main part of a guide mechanism in the cassette loading device shown in FIG.

5 is a perspective view showing an appearance of the entire cassette tape recorder in which the cassette loading device shown in FIG. 1 is incorporated.

FIG. 6 is a side view showing the cassette loading device shown in FIG. 1 in the middle of a loading operation.

FIG. 7 is a side view showing the cassette loading device shown in FIG. 1 in a mounted state of a cassette.

[Explanation of symbols]

 4 Deck Substrate 8 Spring 9 Moving Stand 10 Cassette Holding Plate 13 Cassette 16 Limiter Plate 28 Cassette Mounting Part 29 Rotating Arm

Claims (1)

(57) [Claims] 1. A movable base which is reciprocally movable in the horizontal direction, a cassette holding plate whose one end side is supported by the movable base, and the other end side is vertically rotatable, and the cassette holding plate upward. A urging means for urging , a tape drive mechanism, a top surface of which serves as a cassette mounting portion, a substrate obliquely provided below the movable table with respect to the horizontal direction, and the movable table in the forward direction. When moving, move this platform
Linked to adapted to pivot, by pressing the upper surface of the cassette downward by this rotation, the cassette
With the cassette clamped between the cassette holder and
Rotate the bottom holding plate downward against the biasing means ,
The cassette is the clamped cassette loading apparatus characterized by comprising a rotary lever which is mounted in the cassette mounting portion.