JPH06295556A - Tape cassette - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is such that the opening of the cassette case is covered when not in use, but the upper and lower sides of the opening can be completely opened during use. [Structure] Top plate 3a, bottom plate 3b, and left and right side plates 3c
A slide plate 3 integrally formed with and is supported so as to be slidable back and forth with respect to the cassette case 1, and a lid 2 is supported on both side plates 3b of the slide plate 3 so as to be vertically rotatable. When the slide plate 3 is moved forward and the lid 2 is rotated downward, when not in use, the upper face plate 3a and the lower face plate 3b of the slide plate 3 and the lid 2 form the upper face, the lower face and the front face of the opening 7 of the case 1. Are completely covered, the slide plate 3 is moved rearward, and the lid 2 is rotated upward, so that the upper and lower portions of the opening 7 are completely opened. [Effect] Since no member is located above and below the opening portion 7 of the case 1 in use, even a rotary cylinder having a large inclination or a power supply unit or the like provided on the upper portion,
The rotating cylinder can be easily arranged in the opening 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette used in a magnetic recording / reproducing apparatus such as a VTR or DAT.

[0002]

2. Description of the Related Art Conventionally, this type of tape cassette is constructed as shown in FIG. 6 or 7, for example.

FIG. 6 shows a tape cassette for an 8 mm VTR, in which (a) is a state in which the lid is closed and (b) is a state.
Is the state with the lid opened. In the figure, 21 is a cassette case (hereinafter referred to as a case), 22 is a front lid, and 25 is an inner lid.

A pair of left and right reels 26 around which a magnetic tape (hereinafter referred to as tape) 24 is wound are housed in the case 21. An opening 27 into which a tape guide member of the magnetic recording / reproducing apparatus is inserted is provided in the front part of the case 21, and a tape 24 is passed along the front surface of the opening 27.

The lid 22 is placed above and below the case 21 (arrow c,
It is attached so as to be rotatable in the d direction) and is urged to rotate in the closing direction (arrow d direction) by a torsion coil spring (not shown). Inner lid 25 is case 21
The tape 24 in the opening 27 is protected. Both ends of the inner lid 25 are rotatably supported by the lid 22, and different positions of both ends are engaged with a cam groove (not shown) of the case 21. With this configuration,
When the lid 22 is opened and closed in the directions of arrows c and d, the inner lid 25 is also opened and closed accordingly.

FIG. 7 shows a tape cassette for DAT, in which (a) is a state in which the lid is closed and (b) is a state in which the lid is opened. In the figure, the case 21, the lid 22, the tape 24, the reel 26, the opening 27, etc.
Although this tape cassette has substantially the same function as that of FIG. 6, this tape cassette does not have an inner lid and is provided with a slide plate 23.

The slide plate 23 is supported along the lower surface of the case 21 so as to be slidable back and forth (in the directions of arrows a and b). The slide plate 23 is moved forward (in the direction of arrow a) and the tape 24 in the opening 27 of the case 21 is moved.
And to prevent dust and the like from entering the case 21 through the reel shaft insertion hole on the lower surface of the case 21. The lid 22 is placed above and below the case 21 (arrow c,
It is attached so as to be rotatable in the d direction) and is urged to rotate in the closing direction (arrow d direction) by a torsion coil spring (not shown). With such a configuration, the slide plate 23 is moved in the direction of arrow b, the lid 22 is opened in the direction of arrow c, the lid 22 is closed in the direction of arrow d, and the slide plate 23 is moved in the direction of arrow a. .

As described above, in the conventional tape cassette, when the tape cassette for 8 mm VTR is not used,
The tape 24 is formed by the lid 22 and the inner lid 25.
Covers the front side and the rear side of the tape, and in the case of a DAT cassette, the tape 22 is provided by the lid 22 and the slide plate 23.
4 and the lower surface side of the opening 27 are covered. Therefore, both are so-called hermetically-sealed tape cassettes in which the tape 24 that has passed along the opening 27 of the case 21 is covered when not in use, and unexpected contact with the tape 24 and unexpected tape 24 contact. It is configured to prevent damage and the like.

[0009]

However, the conventional tape cassette described above has the following drawbacks. That is, in recent years, in a magnetic recording / reproducing apparatus in which this type of tape cassette is mounted, it has been attempted to arrange the rotating cylinder in the opening 27 of the case 21 to reduce the size of the apparatus.

However, in the conventional tape cassette described above, with the lid 22 opened, the inner lid 25 in the case of the cassette for 8 mm VTR, and the front end 21a of the top plate of the case 21 in the case of the cassette for DAT, respectively. It is located directly above the opening 27.

Therefore, when the rotary cylinder is largely tilted or a brush unit or the like for supplying power is attached to the upper portion of the rotary cylinder, these interfere with the inner lid 25 or the front end 21a of the top plate of the case 21. Will end up. As a result, the rotating cylinder as described above cannot be arranged in the opening 27 of the case 21, and there is a problem in that it is difficult to realize miniaturization of the magnetic recording / reproducing apparatus.

Therefore, an object of the present invention is to provide a tape cassette which has a structure in which the opening of the cassette case is covered when not in use, but which can completely open the top and bottom of the opening when in use.

[0013]

In order to achieve the above object, the present invention provides a tape guide member or the like for loading a pair of reels around which a tape is wound in a cassette case. An opening to be inserted is provided in the cassette case, and a tape cassette in which the tape is passed along the front surface of the opening has a top plate and a bottom plate and is slidable forward and backward with respect to the cassette case. A supported slide plate and a lid rotatably supported on the slide plate are provided, and the upper and lower surfaces of the opening are opened and closed by sliding the slide plate with respect to the cassette case. The front surface of the opening is opened and closed by the rotation of the lid as the plate slides.

[0014]

According to the tape cassette of the present invention constructed as described above, when the slide plate is slid forward and the lid is moved forward and closed accordingly, the top plate of the slide plate and The lower surface plate and the lid completely cover the upper and lower surfaces and the front surface of the opening of the cassette case. Still, when the slide plate is slid backwards and the lid is moved backwards and opened accordingly,
The upper and lower surfaces and the front surface of the opening are completely opened. As a result, when used with the opening opened, no member is positioned above and below the opening, so it is a rotating cylinder with a large inclination, and a rotating cylinder with a brush unit etc. attached to the top for power supply. However, the rotating cylinder can be easily arranged in the opening.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the tape cassette according to the present invention will be described below with reference to FIGS.

1A and 1B show a tape cassette according to this embodiment. FIG. 1A shows a state when not in use, and FIG. 1B shows a state when recording or reproducing. In the figure, 1 is a cassette case (hereinafter referred to as a case), 2 is a lid as a front lid, and 3 is a slide plate as upper and lower lids.

A pair of left and right reels 6 around which a magnetic tape (hereinafter referred to as tape) 4 is wound are housed in the case 1. An opening 7 into which a tape guide member of the magnetic recording / reproducing apparatus is inserted is provided in the front part of the case 1, and the tape 4 is passed along the front surface of the opening 7.

The slide plate 3 includes an upper plate 3a and a lower plate 3b.
And the left and right side plates 3c that connect them are integrally formed, and are engaged so as to cover the upper, lower, left, and right sides of the case 1, and can slide back and forth (directions of arrows a and b) with respect to the case 1. Supported by. In addition, when an unlocking protrusion (not shown) provided on the lower surface of the case 1 is pressed,
The slide plate 3 is slidable with respect to the case 1.

The lid 2 is a side plate 3c of the slide plate 3.
It is rotatably supported up and down (arrows c and d directions) about the shaft pin 2a, and is urged to rotate in a closing direction (arrow d direction) by a torsion coil spring (not shown).

Numeral 8 is a locking projection provided on both side surfaces of the case 1 for locking the lid 2 in the closed state so as not to open. Further, on both side plates 3c of the slide plate 3, a groove 9 for escaping the locking projection 8 is formed.

2 and 3 are an enlarged side view and an enlarged sectional view of the tape cassette for explaining the opening / closing operation of the slide plate and the lid, where (a) is a closed state, (d) is an open state, and (b) is a sectional view. ) And (c) are states in between.

First, in the state (a), the slide plate 3 is moved forward (in the direction of arrow a) with respect to the case 1, and the top plate 3a and the bottom plate 3b of the slide plate 3 open the case 1. The upper surface and the lower surface of the portion 7 are completely covered. Along with this, the front surface of the opening 7 is also completely covered by the lid 2 that moves forward and is biased to rotate in the direction of arrow d. In this closed state, since the side plate lower edge 2b of the lid 2 is in contact with the upper surface of the locking projection 8, the lid 2 cannot rotate in the direction of arrow c and is in the locked state.
By the forward movement of the slide plate 3, the reel shaft insertion hole 1a provided on the lower surface of the case 1 is also covered.

Next, in the states (b) to (c), the slide plate 3 is gradually moved rearward (in the direction of arrow b), whereby the upper surface and the lower surface of the opening 7 are gradually opened. Further, since the lid 2 is also moved rearward as the slide plate 3 is moved rearward, the lid 2 can be rotated in the direction of arrow c until the lid 2 comes into contact with the locking projection 8. At this time, the back surface 2c of the lid 2 comes into contact with the chamfered portion 1b at the upper end of the case 1, so that the lid 2 is opened in the direction of arrow c by this guiding action.

In the state of (d), the slide plate 3
Is completely moved backward (in the direction of arrow b), and the upper and lower surfaces of the opening 7 are completely opened. Further, the lid 2 is also completely rotated upward (in the direction of arrow c), and the front surface of the opening 7 is completely opened. When the slide plate 3 is moved rearward, the reel shaft insertion hole 10 provided in the lower surface plate 3b of the slide plate 3 becomes the reel shaft insertion hole 1 on the lower surface of the case 1.
matches a.

Thus, the slide plate 3 having the upper surface plate 3a and the lower surface plate 3b is slidable back and forth with respect to the case 1, and the lid 2 is provided on the slide plate 3 so as to be vertically rotatable. Therefore, in the closed state, the front surface and the upper and lower surfaces of the opening portion 7 of the case 1 are completely covered by the lid 2 and the slide plate 3 to form a hermetically sealed tape cassette. In addition, due to the rearward movement of the slide plate 3 and the upward rotation of the lid 2 associated therewith, in the open state,
Not only the front surface of the opening 7 but also the upper and lower surfaces are largely opened, and no member is located above and below the opening 7. The operation of closing the lid 2 and the slide plate 3 is performed by the reverse operation described above.

FIG. 1 shows a tape cassette having the above structure.
A cassette mounting mechanism for mounting the magnetic recording and reproducing apparatus at a predetermined position from the state of (a) to the state of FIG.
Various types such as the top loading type and the front loading type can be easily applied, and therefore the description thereof will be omitted.

4A and 4B show a state in which the tape cassette of this embodiment is mounted on a magnetic recording / reproducing apparatus and a tape is loaded. FIG. 4A is a schematic plan view and FIG. 4B is a schematic side view. Further, FIG. 5 is a schematic perspective view when the rotary cylinder is arranged in the opening of the cassette case.

4 and 5, 11 is a rotary cylinder, 12 to 16 are guide rollers, 17 and 18 are inclined posts, 19 is a capstan shaft, and 20 is a pinch roller. As is clear from these figures, when the opening 7 of the case 1 is opened and used, no member is positioned above and below the opening 7.
1 is arranged in the opening 7 of the case 1, the rotating cylinder 11, the guide roller, etc. are not included in the case 1 and the lid 2.
It is possible to realize a tape path in the opening 7 without interfering with.

Further, in the above embodiment, the slide plate 3 is integrally formed on the upper and lower sides, whereby the structure can be extremely simplified and the opening / closing operation can be made smooth. The upper and lower sides of the slide plate may be divided and independently slidable, and the lid 2 may be rotatably attached to the upper or lower slide plate.

[0030]

As described above, according to the tape cassette of the present invention, the opening portion of the cassette case into which the tape guide member for loading the tape is inserted, and the upper and lower surfaces thereof are relative to the cassette case. While opening and closing with a slide plate that is supported slidably back and forth,
The front surface is opened and closed by a lid that is vertically rotatably supported by a slide plate, so that the opening is covered when not in use when the slide plate is slid forward and the lid is rotated downward. When the slide plate is slid backward and the lid is rotated upward, the upper and lower openings can be completely opened without impairing the characteristics of the mold. Therefore, when used, no member is positioned above and below the opening. The magnetic recording / reproducing apparatus can be miniaturized because it can be easily arranged in the unit.

[Brief description of drawings]

1A and 1B show an embodiment of a tape cassette according to the present invention, FIG. 1A is a perspective view with a lid and a slide plate closed, and FIG. 1B is a perspective view with a lid and a slide plate open.

2A to 2D are enlarged side views for explaining the opening and closing operations of a lid and a slide plate in the tape cassette of the above embodiment.

3A to 3D are enlarged cross-sectional views for explaining the opening / closing operation of the lid and the slide plate in the tape cassette of the above embodiment.

FIG. 4 shows a state in which the tape cassette of the above embodiment is mounted on a magnetic recording / reproducing apparatus and a tape is loaded,
(A) is a schematic plan view, (b) is a schematic side view.

FIG. 5 is a schematic perspective view showing a case where a rotary cylinder is arranged in the opening of the tape cassette of the above embodiment.

6A and 6B show a conventional tape cassette for an 8 mm VTR, in which FIG. 6A is a perspective view with the lid closed, and FIG. 6B is a perspective view with the lid open.

FIG. 7 shows a conventional DAT tape cassette,
(A) is a perspective view showing a state in which a lid and a slide plate are closed,
(B) is a perspective view showing a state in which a lid and a slide plate are opened.

[Explanation of symbols]

 1 cassette case 1a reel shaft insertion hole 1b chamfered portion 2 lid 2a shaft pin 2b side plate lower edge 2c back surface 3 slide plate 3a top plate 3b bottom plate 3c side plate 4 magnetic tape 6 reel 7 opening 8 locking projection 9 groove 10 reel shaft insertion hole 11 rotating cylinder 12-16 guide roller 17, 18 inclined post 19 capstan shaft 20 pinch roller

Claims (2)

[Claims] 1. A pair of reels around which a tape is wound are housed in a cassette case, and an opening for inserting a tape guide member for loading the tape is provided in the cassette case. In a tape cassette in which the tape is passed along the front surface, a slide plate that has an upper plate and a lower plate and is slidably supported forward and backward with respect to the cassette case, and can be rotated up and down on the slide plate. A lid supported by the slide plate, the upper and lower surfaces of the opening are opened and closed by the slide of the slide plate with respect to the cassette case, and the front of the opening is opened by the rotation of the lid accompanying the slide of the slide plate. A tape cassette characterized in that it is configured to be opened and closed. 2. An upper surface plate that opens and closes an upper surface of the opening,
2. The tape cassette according to claim 1, wherein the slide plate is integrally formed by a lower surface plate that opens and closes the lower surface of the opening and left and right side plates that connect the upper surface plate and the lower surface plate. .