JPH0718034Y2 - Portable recording / playback device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a portable recording / reproducing apparatus suitable for application to, for example, a front loading type VTR, a tape recorder or a floppy disk device. In particular, it relates to a cassette attaching / detaching device.

[Outline of device]

The present invention is directed to a cassette having a cassette insertion opening, a lid for opening and closing the cassette insertion opening, a cassette insertion position arranged in the cassette insertion opening, close to the cassette insertion opening, and a cassette retracted behind the cassette insertion opening. A portable recording / reproducing apparatus comprising: a cassette holder that reciprocates between a cassette mounting position and a drive unit that reciprocally drives the cassette holder between the cassette insertion position and the cassette mounting position. Then, by using the backward movement of the cassette holder that is moved back from the cassette mounting position to the cassette insertion position, the lock at the closed position of the lid configured to open outward is released to remove the lid. It is configured to open automatically at the right time by the outside opening method, and it has high drip-proof and dust-proof properties, a simple structure, and a cover. It is obtained by the extraction operation of bracts to very easily performed.

[Conventional technology]

Conventionally, as a cassette attaching / detaching device in a front loading type VTR, for example, Japanese Utility Model Publication No. 60-25740 and Japanese Utility Model Publication No. 63-6545 are known.

In these conventional examples, the cassette insert opening of the cabinet is
A lid with an inward opening structure is provided to open the inside of the cabinet.

When the cassette is attached, the lid is pushed inward by the cassette to insert the cassette into the cassette holder which is returned to the cassette insertion position.

Then, the motor, which is the driving means, is driven to rotate in the forward direction, and the cassette holder is moved forward from the cassette insertion position to the cassette mounting position pulled downward and rearward thereof, and the cassette is mounted to the cassette mounting position, and at the same time, the cassette holder is mounted. The lid is closed by the lid opening / closing mechanism that is interlocked with.

When ejecting the cassette, press the eject button. Then, the motor is driven to rotate in the reverse direction, the cassette holder starts returning from the cassette mounting position, the lid is opened by the lid opening / closing mechanism, and then the cassette holder returns to the cassette insertion position. Then, the cassette is made to stick out of the cassette insertion opening.

[Problems to be solved by the device]

However, in these conventional examples, since the lid that opens and closes the cassette insertion opening has an inward opening structure, the lid opening / closing mechanism is used when the lid is pushed inward when the cassette is inserted or when the cassette is removed. When the lid is opened to the inside, rainwater and dust easily enter the cabinet through the cassette insertion port and cannot be applied to a portable VTR used outdoors.

In addition, a lid opening / closing mechanism that opens and closes the lid in association with the cassette holder when the cassette is attached or taken out is required, which makes the structure complicated and costly.

In addition, when the cassette is taken out, it takes a long time until the cassette is ejected from the cassette insertion opening after the lid is opened, so that the cassette cannot be taken out in a timely manner.

An object of the present invention is to provide a portable recording / reproducing apparatus in which a lid body having an outer opening structure can be automatically and automatically opened with a very simple structure.

[Means for Solving the Problems]

In order to achieve the above object, the portable recording / reproducing apparatus of the present invention has a lid body for opening and closing the cassette insertion opening of the cabinet, which has an outside opening structure for opening the casing above the cassette insertion opening on the outside of the cabinet. A biasing means for biasing the lid to open the lid, a locking means for locking the lid at the closed position, and a cassette holder are provided on the cassette holder, and the cassette holder is returned from the cassette mounting position to the cassette insertion position by the driving means. When the cassette holder is moved, it is provided with a lock releasing means for releasing the lock means when the cassette holder reaches the position immediately before the cassette inserting position.

[Action]

The portable recording / reproducing apparatus configured as described above is configured so that when the cassette is taken out, the cassette holder is moved back from the cassette mounting position to the cassette insertion position by the driving means, and when the cassette holder reaches the position immediately before the cassette insertion position. The lock releasing means provided in the holder operates the lock means to release the lock at the closed position of the lid body, and the lid body is automatically opened by the biasing means by the outward opening method. It
Immediately after the lid is opened, the cassette holder is moved back to the cassette insertion position, and the cassette is immediately ejected outside the cassette insertion opening.Before the cassette is ejected into the cassette insertion opening, remove the lid. The lid can be opened automatically in good timing.

〔Example〕

The present invention will be described below with reference to a front loading type portable VTR.
An embodiment applied to will be described with reference to the drawings.

First, FIG. 2 shows the whole of a portable VTR 1, in which a horizontally long and horizontal cassette insertion opening 3 is provided along the upper end of the front panel 2a of the cabinet 2. And
As shown in FIGS. 1A to 1C, the lid body 4 having a substantially U-shaped cross section for opening and closing the cassette insertion opening 3 is configured to have an outward opening structure, and is shown by a chain line in FIG. A closed position,
It is configured so as to be openable and closable in the directions of arrows a and a ′ between the outside of the cabinet 2 shown by the solid line in FIG. 2 and the open position above the cassette insertion port 3. A rubber packing 5 is adhered to the back surface of the lid 4 along the outer periphery thereof, and when the lid 4 is closed to the closed position in the direction of the arrow a ', the rubber packing 5 is attached to the outer periphery of the cassette insertion port 3. It is configured to be in close contact with the surface 3a and to be sealed in a watertight manner. Further, the front panel 2a of the cabinet 2 is provided with various kinds of operation buttons 7 such as an eject button 6 and other recording buttons and reproduction buttons, and various knobs 8 such as various switches and volumes. Also,
The carrying handle 9 and the like are also attached to the cabinet 2.

Next, FIGS. 1A to 1C show a cassette attaching / detaching device 11 provided inside the cabinet 2, in which a pair of left and right support plates 13 mounted vertically and in parallel on a chassis 12 are shown. It is horizontally arranged from the cassette holder 14 between them. Then, the plurality of guide grooves 15 having substantially L-shapes provided on both the support plates 13 guide the plurality of guide rollers 16 attached to the left and right sides of the cassette holder 14, and the cassette holder 14 is moved to the first A position. Reciprocating movements in the directions of arrows b and b'along the substantially L-shaped moving path between the cassette insertion position shown in the figure and close to the cassette insertion position and the lower cassette mounting position shown in FIG. 1C. It is freely configured. A motor 17, which is a driving means, is mounted on the chassis 12 and the like, and a holder driving mechanism driven by the motor 17 (a structure including an L-shaped rack and a pinion disclosed in Japanese Utility Model Publication No. 60-25740). It is configured to be reciprocally driven in the directions of arrows b and b'between the cassette insertion position and the cassette mounting position by means of the structure of the drive gear shown in Japanese Utility Model Laid-Open No. 63-6545.

A pair of left and right lid attachment plates 19 attached to the back surface of the lid 4 are attached to both support plates 13 via a fulcrum shaft 20 so as to be rotatable in the directions of arrows a and a '. A spring 21, which is a biasing means for biasing the lid 4 in the direction of the arrow a, is installed between the lid mounting plate 19 and the support plate 13. A lock lever 22, which is a locking means for locking the lid 4 at the closed position, is attached to the support plate 13 via a fulcrum shaft 23 so as to be rotatable in the directions of arrows c and c '. A cam portion 22a is provided at one end of the lock lever 22, and a hook portion 22b for locking a pin 24 provided on the lid mounting plate 19 is provided at the other end. The lock lever 22 is in contact with a stopper 26 which is urged to rotate in the direction of arrow c by a spring 25 which is an urging means provided between the lock lever 22 and the support plate 13.

The lock releasing means provided in the cassette holder 14 is constituted by a guide roller 16a which is one of the guide rollers 16.

It should be noted that an arrow a is formed around the fulcrum shaft 20 integrally with the lid mounting plate 19.
A sector gear 28 rotated in the a'direction is meshed with a driven gear 31 attached to a rotary shaft 30 of a rotary damper 29 to which the support plate 13 is attached.

Next, the operation of the cassette attaching / detaching device 11 configured as described above will be described.

First, when the cassette is attached, as shown in FIG.
Is opened in the direction of arrow a to the open position. Therefore,
When the cassette 42 is inserted horizontally from the cassette insertion port 3 in the direction of the arrow f and the cassette 42 is inserted into the cassette holder 14 which is moved back to the cassette insertion position to the predetermined position in the direction of the arrow f, the insertion of the cassette is detected. As detected by a switch (not shown), the motor 17 is driven to rotate forward,
The cassette holder 14 moves from the cassette insertion position in Fig. 1A to the 1C position.
It is reciprocated in the direction of arrow b to the cassette mounting position in the figure. The cassette holder 14 pulls the cassette 42 from the cassette insertion opening 3 into the cassette 2 in the direction of the arrow b, and the pair of left and right reel stands at the cassette mounting position and a plurality of tape loading means (both are shown in FIG. (Not shown) is mounted horizontally from above.

As shown in FIG. 1A, since the lid 4 opened to the open position in the direction of the arrow a has a function of a cover for covering the upper portion of the cassette insertion opening 3, the cassette insertion opening 3 is inserted into the cabinet 2.
To some extent prevent rainwater and dust from entering the interior. However, after the cassette is mounted, as shown in FIG. 1C, the lid 4 is closed to the closed position in the direction of the arrow a ', and the cassette insertion opening 3 is inserted.
To completely prevent rainwater and dust from entering the cabinet 2. At this time, when the operator manually rotates the lid body 4 to the closed position in the direction of the arrow a ', the pin 24 moves the lock lever.
The lid 4 is locked at the hook portion 22b of 22 and locked at the closed position.

Next, when the cassette is taken out, when the eject button 6 shown in FIG. 2 is pressed, the motor 17 is driven in the reverse rotation, and the cassette holder 14 is moved from the cassette mounting position in FIG. 1C to the cassette insertion position in FIG. 1A. The backward movement is started in the b'direction. Then, the cassette 42 is ejected by the cassette holder 14 toward the cassette insertion position 3 in the direction of arrow b '.

However, in this case, as shown in Fig. 1B, the cassette holder
When the cassette 14 is returned to the position immediately before the cassette insertion position and the rear end side 42a of the cassette 42 is discharged to the position immediately before the cassette insertion port 3, the guide roller 16a which is a lock releasing means provided in the cassette holder 14 is provided. Is contacted with the cam portion 22a of the lock lever 22, and the lock lever 22 is rotated against the spring 25 in the direction of arrow c'from the lock position indicated by the one-dot chain line to the lock release position indicated by the solid line.

Then, the hook portion 22b of the lock lever 22 is connected to the pin 4 of the lid 4.
2 and the lock at the closed position of the lid body 4 is released, and the lid body 4 is automatically opened by the spring 21 from the closed position of the one-dot chain line to the open position of the solid line in the direction of arrow a. Covered. At this time, since the rotary shaft 30 of the rotary damper 29 is rotationally driven by the fan gear 28 that is rotated integrally with the lid body 4 in the direction of the arrow a via the driven gear 31, the lid body 4 is rotated. Due to the damper effect of the damper 29, the lid is opened at a stable low speed.

Immediately after the lid 4 is opened, as shown in FIG. 1A, the cassette holder 14 is moved to the cassette insertion position by the arrow b '.
When the cassette 42 is completely returned in the direction, the rear end side 42a of the cassette 42 is immediately projected out of the cassette insertion port 3 in the direction of arrow f '. The return of the cassette holder 14 to the cassette insertion position is detected by a detection switch (not shown), and the motor 17 is stopped.

As described above, according to this cassette attaching / detaching device, the motor
When the cassette holder 14 which is moved back from the cassette mounting position to the cassette insertion position by 17 reaches the position immediately before the cassette insertion position, the lock lever 22 is operated by the guide roller 16a provided in the cassette holder 14. The lock at the closed position of the lid 4 is released. Then, the lid body 4 is automatically opened by the spring 21 in the outward opening method in the direction of the arrow a. Immediately after the lid 4 is opened, the cassette holder 14 is returned to the cassette insertion position, and the cassette 42 is immediately ejected to the outside of the cassette insertion port 3, so that the cassette 42 is ejected to the cassette insertion port 3. Immediately before the operation, the lid 4 can be automatically opened with good timing.

Then, the operator grips the rear end side 42a of the cassette 42 by the hand and pulls the arrow f'outside the cassette insertion port 3.
It can be quickly withdrawn in the correct direction.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various effective modifications can be made based on the technical idea of the present invention.

Further, the present invention is not limited to the VTR shown in the above embodiment, but can be applied to various portable recording / reproducing devices such as tape recorders, floppy disc devices and the like.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

The lid is configured to open outside the cassette above the cassette insertion opening, and the opened lid has the function of a cover that covers the upper part of the cassette insertion opening. It is possible to prevent rainwater and dust from entering the cabinet to some extent, and it is possible to obtain high drip-proofness and dustproofness which are necessary conditions for the portable recording / reproducing apparatus.

When the cassette is taken out, the lid is moved back from the cassette mounting position to the cassette insertion position by the drive means by using the backward movement of the cassette holder to unlock the lid at the lid closing position. The lid is automatically opened by the urging means, and the lid opening / closing mechanism for opening / closing the lid in conjunction with the cassette holder is not required. Therefore, the structure is simple and the cost is low. Therefore, it is possible to reduce the size and weight of the portable recording / reproducing device.

When the cassette is removed, the lid is moved back from the cassette mounting position to the cassette insertion position.When the cassette holder reaches the position immediately before the cassette insertion position, the lid is automatically opened by the outside opening method. Right after the lid was opened,
The cassette holder is returned to the cassette insertion position, the cassette is immediately projected outside the cassette insertion port, and the lid can be automatically opened in a timely manner immediately before the cassette is projected into the cassette insertion port. When the cassette is taken out, the time during which the lid is opened can be extremely shortened, and the drip-proof and dust-proof properties are high.

The lid can be automatically opened by pushing the eject button and the cassette can be pushed out to the cassette insertion port.There is no need for the operator to manually open the lid, so the cassette removal operation is a one-touch operation. Is very easy to do.

[Brief description of drawings]

The drawings show an embodiment of the present invention, wherein FIGS. 1A to 1C are side views, partially cut away, showing the operation of the cassette attaching / detaching device, and FIG. 2 is a perspective view showing the entire portable VTR. It is a figure. Further, in the reference numerals used in the drawings, 1 ... portable VTR 2 ... Cabinet 3 ... cassette insertion port 4 ... lid 11 ... cassette attaching / detaching device 14 ... cassette holder 16a ... guide roller (lock) Releasing means) 17 …… Motor (driving means) 21 …… Spring (biasing means) 22 …… Lock lever (locking means).

Claims (1)

[Scope of utility model registration request] 1. A cabinet having a cassette insertion opening,
A lid that opens and closes the cassette insertion opening, and a cassette holder that is disposed in the cassette and is reciprocated between a cassette insertion position that is close to the cassette insertion opening and a cassette installation position that is pulled behind the cassette insertion position. And a portable recording / reproducing apparatus having a driving means for reciprocally driving the cassette holder between the cassette insertion position and the cassette mounting position, wherein the lid body is located outside the cabinet and above the cassette insertion port. An opening structure for opening the lid, a biasing means for biasing the lid body to open the lid body, a locking means for locking the lid body at the closed position, and a cassette holder provided on the driving means. Therefore, when the cassette holder is moved back from the cassette mounting position to the cassette insertion position,
A portable recording / reproducing apparatus comprising: a lock releasing means for releasing the lock means when the cassette holder reaches a position immediately before the cassette inserting position.