JPH0273554A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To eliminate the need of a mechanism for introducing one part of a rotary head drum into a cassette mouth part of a tape cassette and to simplify the loading mechanism by inserting the whole drum into the mouth part. CONSTITUTION:When the cassette 10 is mounted on slide frames 24 and 26 and then the frame 24 is moved in the direction A, cassette main bodies 10A and 10B are expanded in accordance with the movement. Simultaneously, by meshing with a rack 24, a reel 12B is rotated via a roller 18 to supply a tape. Then, a main frame 22 is lowered to insert the head drum 40 into the cassette mouth part 10C and moreover a capstan 46 and reels 12A and 12B are inserted with reel bases 50A and 50B. Subsequently, the tape is wound around the drum 40, and a pinch roller 48 is brought into pressurized contact with the capstan 46 so as to carry out the recording and reproducing. By this method, the need of the mechanism for introducing one part of the drum into the mouth part is eliminated, thus simplifying the loading mechanism.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device, and in particular, in a video tape recorder or the like, a tape of a tape cassette is wound around a rotating head drum to perform magnetic recording or reproduction on the tape. The present invention relates to a magnetic recording/reproducing device.

[Conventional technology]

This type of magnetic recording/reproducing device is miniaturized by eliminating wasted space as much as possible, and in particular, miniaturization of this magnetic recording/reproducing device is required as in the case of camera-integrated VTRs, etc. It is effective when applied to equipment that is

Conventionally, in order to reduce the size of magnetic recording and reproducing devices, a movable chassis that can move forward and backward is provided with respect to a fixed chassis on which a rotating head drum, etc. is disposed, and a pair of chassis for tape winding and supply is provided on this movable chassis. There is a reel stand (Japanese Patent Application Laid-Open No. 61-271648).

That is, the tape cassette is attached/detached with the movable chassis retracted from the fixed chassis, and during recording and playback, the movable member located in the cassette mouth portion of the tape cassette is moved along a predetermined path, and the movable member is moved toward the rotating head drum side. By moving the tape forward, the tape in the tape cassette can be pulled out and wound around the rotating head drum. After the tape loading is completed, a portion of the rotary head drum enters the cassette mouth portion of the tape cassette.

Therefore, the magnetic recording/reproducing apparatus having the above configuration can reduce the distance between the rotating head drum and the pair of reel stands (tape cassettes).

[Problem that the invention seeks to solve]

However, in the case of a conventional magnetic recording/reproducing device in which a movable shearn is moved so that a part of the rotary head drum enters the cassette mouth portion of the tape cassette, the device can be made smaller, but tape loading and There is a problem in that the movable chassis must be moved during unloading, which complicates the loading mechanism.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a magnetic recording/reproducing device that can be made smaller and has a simple loading mechanism.

[Means for solving problems]

In order to achieve the above object, the present invention prepares a tape cassette which has a mouth portion and a magnetic surface on the inside of the tape (7) which stores the entire rotating head drum between a pair of reels. The rotating head drum is placed in a tape loop within the cassette mouth section when it is attached to the apparatus main body, and the loading member is moved into the cassette mouth section during tape loading to wind the tape around the rotating head drum. .

[Effect]

According to the present invention, by mounting the tape cassette having the above configuration into the main body of the apparatus, the entire rotary head drum is inserted into the cassette mouth portion of the tape cassette, that is, into the tape loop between the pair of reels. When loading the tape, the tape is wound around the rotating head drum by moving a loading member outside the tape loop into the cassette mouth section.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the magnetic recording and reproducing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

First, to explain the tape cassette applied to the present invention, as shown in FIG. A video tape 14 is wound around these rolls 12AS and 12B.

The magnetic surface of this videotape 14 is located on the opposite side of a conventional cassette, ie, on the inside of the tape.

Guide grooves 11Δ and IIB are formed on the back surfaces of the left and right cassette bodies 10A and IOB, respectively, and a connecting plate 16 is disposed between each guide groove 11A and IIB. As a result, the left and right cassette bodies 10A, IO
B is configured to be extendable and retractable as shown in FIGS. 3(A) and 4, and when extended, the left and right cassette bodies 10A, 10
A cassette mouth portion 10C into which a rotating head drum, etc., which will be described later, is inserted is formed between the two.

Further, the left cassette main body 10A is formed with a notch 10D into which a capstan, which will be described later, is inserted, and the right cassette main body 10'B is provided with a roller 18. This roller 18 is provided so as to be in contact with the outer circumferential surface of the reel 12B and to partially protrude from the main body 10B of the reel 12B.

Furthermore, on the bottom of the left and right cassette bodies 10A and IOB,
Parallel grooves 19A and 19B are formed, respectively.

Now, FIG. 5 and FIG. 6 are a plan view and a front view showing an embodiment of a cassette mounting section in which the cassette 10 of the magnetic recording/reproducing apparatus according to the present invention is mounted.

This cassette mounting section 20 is mainly connected to the main frame 2.
2. It is composed of a slide frame 24 and a slide frame 26.

A fifth slide frame 24 is attached to the main frame 22.
Guide groove 22A for guiding in the direction of arrow ASB in the figure
, 22B are formed, and the slide frame 26
A guide groove 22C is formed to guide the slider in an oblique direction, and a rack 28 that meshes with the gear 30 on the slide frame 24 is provided b).

The slide frame 24 has guide bins 33A guided by guide grooves 22Al and 22B of the main frame 22.
, 33A, 33B, and 33D, and these guide bins move the main frame 22 along arrows A, 33B, and 33D in FIG.
It is slidably guided in direction B. Note that FIG. 7 shows the state in which the slide frame 24 has moved in the direction indicated by the arrow. In addition, the slide frame 24 includes
A guide groove 24A is formed for guiding the slide frame 26 in the directions of arrows C and D in FIG. Furthermore,
A gear 30 that meshes with the rack 28 of the main frame 22 and a gear 32 that meshes with this gear 30 and rotates the roller 18 of the cassette 10 are provided on the slide frame 24.

The slide frame 26 includes a guide bin 35A guided by the guide J24A of the slide frame 24, and a guide J24A of the slide frame 24! 'g 24 A and a guide bin 35B guided by both the guide groove 22C of the main frame 22, and these guide bins 35A, 35B.
Guided by arrow C on the slide frame 26,
It moves in the D direction in conjunction with the movement of the slide frame 26 (see FIGS. 5 and 7).

Note that the cassette 1 is mounted on the slide frames 24 and 26.
0 can be mounted, and the slide frame 2
4.26 are formed with guide pieces 24B, 26B and a stopper 24C126C for guiding the cassette 10 to a predetermined position.

1 and 2 are plan views showing an embodiment of the magnetic recording/reproducing apparatus according to the present invention, respectively, before and after tape loading. In FIG. 1, 40 is a rotating head drum, 42, 44 is a loading guide, 46 is a capstan, 48 is a pinch roller, and 50A.

50B is a reel stand.

In FIG. 1, the cassette 10 is inserted from the direction of arrow E and mounted on the slide frame 24,26. When tape loading is performed from this state as shown in FIG.
A, move in the direction of the arrow along 22B. As a result, the slide frame 26 guided to the guide groove 22C126 moves in the direction of arrow C, and each frame and the groove 1
The space between the left and right cassette bodies 10AS 108 engaged with 9, 1 (IB) expands as the slide frame 26 moves (FIG. 2).

Further, as the slide frame 26 moves in the direction of the arrow, the roller 18 is transferred from the rack 28 via the gears 30 and 32.
The rotation of the roller 18 rotates the reel 12B, and the cassette body 10
The tape necessary for stretching between A and 108 is supplied from reel 12B.

Next, the main frame 22 is lowered perpendicularly to the plane of the paper. As a result, the pair of reels 1 of the cassette 10
The rotary head drum 40 is inserted into the cassette mouth portion 10c between 2A and 12B, and the capstan 46 is inserted into the notch 10D of the cassette 10. Also,
A pair of reels 12AS and 12B with reel stands 50A and 50
B is inserted.

Next, move the loading guides 42 and 44 to the second position.
The tape is wound around the rotary head drum 40 by moving in the direction of the arrow in the figure. During magnetic recording and reproduction, the pinch roller 48 is brought into pressure contact with the capstan 46 through the tape, thereby performing desired tape feeding.

In this embodiment, the case where the telescopic cassette 10 is used has been described, but the present invention is not limited to this, and the cassette 10 is in an extended state and the cassette has a path-to-way configuration, that is, a rotary head drum is used between a pair of reels. A non-retractable cassette having a fully enclosing cassette mouth portion may also be used. Of course, in this case, a mechanism for automatically expanding and contracting the cassette becomes unnecessary.

〔Effect of the invention〕

As explained above, according to the magnetic recording and reproducing apparatus according to the present invention, the entire rotating head drum is inserted into the tape loop in the cassette mouth section between the pair of reels of the tape cassette, so that it does not work like a conventional movable chassis. A mechanism for inserting a part of the rotating head drum into the cassette mouth part is not required, and the loading mechanism is simplified. Further, the size of the device can be made approximately the size of a cassette.

42. 44...Loading guide, Pustan, 48...pinch roller, OB... reel stand.

46...Kia 50A, 5

[Brief explanation of the drawing]

Figures 1 and 2 are plan views showing an embodiment of the magnetic recording/reproducing device according to the present invention, and Figures 3 (A) and (B) respectively.
are a plan view and a front view showing an example of a tape cassette applied to the present invention, respectively, and (C) is A of the same figure (A).
- A cross-sectional view taken along line A; FIG. 4 is a plan view showing the tape cassette in an extended state; FIGS. 5 and 6 are plan views showing the cassette mounting portion of the magnetic recording/reproducing apparatus shown in FIG. 1; and a front view, and FIG. 7 is a plan view showing the cassette mounting section of the magnetic recording/reproducing apparatus shown in FIG. 2.

Claims (1)

[Claims] A tape cassette is prepared which has a cassette mouth part that stores the entire rotating head drum between a pair of reels and has a magnetic surface on the inside of the tape, and when the tape cassette is installed in the main body of the apparatus, the rotating head drum is inserted into the cassette mouth part. 1. A magnetic recording and reproducing apparatus, characterized in that the tape is placed in a tape loop within the cassette mouth section, and when loading the tape, a loading member is moved into the cassette mouth section to wind the tape around the rotating head drum.