JPH05342803A - Tape cassette - Google Patents

Abstract

PURPOSE:To provide a tape cassette capable of making the oscillation of restrain members suppressing the rotation of supply reel and a take-up reel linked with the opening/closing operation of a cover. CONSTITUTION:Shafts 63s,63t of the upper cover 6 guided by guiding grooves 13s, 13t are moved backward linked with the upward rotating operation of the front cover 5. By this procedure, the tip parts 8a, 9a of the restrain members 8, 9, which are inserted to holes 1e, 1f molded on an upper half 1a of the tape cassette 1, are pressed to oscillate the restrain members 8, 9. Thus, the suppression of the rotation of supply reel 3 and take-up reel 4 is made possible.

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 recording / reproducing apparatus.

[0002]

2. Description of the Related Art A conventional tape cassette used in a recording / reproducing apparatus is Japanese Patent Application No. 2-193 filed by the present applicant.
As shown in the conventional example of Japanese Patent No. 641 publication, a lid for protecting a tape rotatably attached to a tape cassette main body and a reel lock mechanism for preventing slack of the tape are provided, and the tape is rotated by the rotation of the lid. In general, a tape cassette having a structure in which an opening for inserting a tape pulling member for pulling out the tape is formed.

[0003]

In such a conventional tape cassette, by the lid releasing member of the cassette holder, the lid is rotated and the chassis of the recording / reproducing apparatus is installed until the tape cassette is ready for recording / reproducing. There is a problem that the reel lock mechanism needs to perform two swing operations of the reel lock mechanism by the standing reel lock release pin, which complicates the structure of the mechanism.

The present invention solves the above-mentioned problems, and it is possible to swing the locking member that inhibits the rotation of the supply reel and the take-up reel in one operation in conjunction with the opening / closing operation of the lid. It is intended to provide a tape cassette.

[0005]

In order to achieve this object, the tape cassette of the present invention accommodates a supply reel and a take-up reel, each of which is composed of an upper half and a lower half, around which the tape is wound. The cassette main body, which extends over the opening and has a guide groove on the side surface, the front lid that covers the front surface of the cassette main body opening and is pivotally supported by the cassette main body, and the upper surface of the cassette main body opening. A cover, an upper lid that is pivotally supported in conjunction with the front lid and is rotatably supported, and that engages with a guide groove of the cassette body, and a lock that is pivotally supported by the cassette body and contacts the outer circumferences of the flanges of both reels. The locking member projects from a hole provided in a guide groove on the side surface of the cassette body, and is configured to swing the locking member by movement of the upper lid.

[0006]

According to the present invention having the above-mentioned structure, the locking member is moved by the upward movement of the front lid about the fulcrum of the front lid and the rearward movement of the upper lid guided by the guide groove of the cassette body. By swinging against the biasing force of the elastic member, the rotation restraint of the supply reel and the take-up reel is released, and the supply reel and the take-up reel can rotate.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

As shown in the figure, the upper half 1a and the lower half 1
The supply reel 3 and the take-up reel 4 wound with the tape 2 are stored in the tape cassette 1 made of b, and the tape 2 is stretched on the front surface of the opening 11 by the fixed posts 12s and 12t formed in the tape cassette 1. Has been done. Guide grooves 13s and 13t are formed on both side surfaces of the tape cassette 1.

The front lid 5 is a fixed post 1 of the tape cassette 1.
Shafts 54s and 54t formed on ribs 51s and 51t at both ends, covering the tape 2 stretched over 2s and 12t from the front.
Holes 14s, 14 formed on the side surface of the tape cassette 1
engaged with t. Further, it is constantly urged by an elastic member (not shown) in the direction of closing the lid.

The upper lid 6 covers the opening 11 of the tape cassette 1 from the upper surface, and the shafts 63s and 63t formed on the ribs 61s and 61t at both ends guide the guide groove 13s of the tape cassette 1.
The ribs 51s, 51 on the side surface of the front lid 5 are engaged with the shafts 65s, 65t formed on the ribs 61s, 61t at both ends for engaging with the rib 13s.
The holes 55s and 55t formed at t are engaged with each other.

A slider 7 for covering the tape 2 in cooperation with the front lid 5 and the upper lid 6 covers the opening 11 of the tape cassette 1 from the bottom surface, and both ends thereof have vertical walls 71s and 71t rising to the side surface of the tape cassette 1. It is slidably mounted on the tape cassette 1. Further, a vertical wall 72 rises on the front side of the tape cassette 1, and the slider 7 is constantly pressed toward the front of the tape cassette 1 by an elastic member (not shown) mounted between the vertical wall 72 and the tape cassette 1. ..

The locking members 8 and 9 are fitted with shafts 1c and 1d formed on the upper half 1a, and are rotatably fixed by pins 10 and 11. The locking members 8 and 9 press the outer circumferences of the flanges 3a and 4a of the supply reel 3 and the take-up reel 4, respectively, by elastic members (not shown). Further, the tip portions 8a and 9a of the locking members 8 and 9 are inserted into the holes 1e and 1f formed in the upper half 1a, and the protrusions 8b and 9b apply the biasing force of the elastic member (not shown). While holding the positions of the locking members 8 and 9 against each other, the projections 8a and 9b block the holes 1e and 1f, respectively, so that dust, dust, etc. may enter the tape cassette 1 and adhere to the tape 2. To prevent.

The opening operation of the tape cassette 1 having the above-mentioned structure will be described. Since the tape cassette 1 is symmetrical between the supply reel side and the take-up reel side, the supply reel side will be mainly described.

When the tape cassette 1 is not mounted in the recording / reproducing apparatus, as described in the above-mentioned configuration,
The locking members 8 and 9 press the outer peripheries of the flanges 3a and 4a of the supply reel 3 and the take-up reel 4, respectively, by the urging force of the elastic member, and prevent their rotation, so that the tape 2 does not easily sag. It is like this.

When the tape cassette 1 is mounted and used in a recording / reproducing apparatus, first, a cassette holder (not shown) for holding the tape cassette 1 and loading it in the recording / reproducing apparatus from the closed state of the tape cassette 1. When the tape cassette 1 is inserted into the tape cassette 1, the slider 7 is pushed by the locking portion 7a formed on the cassette holder and slides rearward of the tape cassette 1 against the biasing force of the spring. As a result, the bottom surface of the opening 11 is opened and the tape 2 pull-out member of the recording / reproducing apparatus can be inserted.

Further, the front lid 5 is pressed from below by the opening member 5a provided on the cassette holder against the urging force of the elastic member, and starts to rotate about the shaft 54s.

When the front lid 5 is rotated, the shaft 65s of the upper lid 6 which is engaged with the hole 55s is interlocked and pivoted upward, so that the front portion of the upper lid 6 is lifted upward and is directed rearward of the tape cassette 1. It is pressed and moves.

Further, when the rear end of the upper lid 6 slides over the upper surface of the tape cassette 1 beyond the height of the upper surface of the tape cassette 1, the shaft 63s of the upper lid 6 is positioned behind the guide groove 13s of the tape cassette 1. The shaft 63s of the upper lid 6 comes into contact with the wall surface 17s, and thereafter the shaft 63s of the upper lid 6 is guided by the wall surface 17s having a large inclination to reach the horizontal wall surface 18s, and further slides to move the upper lid 6. Move backwards. At this time, the locking member 8 inserted in the hole 1e formed in the guide groove 13s
The shaft 63s presses the protruding portion 8a of the locking member 8 against the biasing force of the elastic member in the direction of arrow A from the state in which the elastic member presses the outer periphery of the flange 3a of the supply reel 3. It rotates and the flange 3a of the supply reel 3
Away from the outer circumference. In this way, the supply reel 3 of the tape cassette 1 can be rotated and the tape 2 can be run, and the tape 2 can be mounted in the recording / reproducing apparatus.

In this state, the opening 1 of the tape cassette 1
The tape pull-out member inserted in 1 pulls out the tape 2 from the supply reel 3 or the take-up reel 4 and moves it to a position in the vicinity of the drum equipped with the rotary head, so that the tape 2 can be wound around the drum equipped with the rotary head. By rotating the drum equipped with the rotary head and rotating the supply reel 3 and the take-up reel 4 to run the tape, the tape 2
It is possible to record and reproduce video signals, audio signals, and the like.

Next, when the tape is ejected from the recording / reproducing apparatus, the operation of the recording / reproducing apparatus first causes the tape pull-out member to the opening 11 of the tape cassette 1 and the tape wound on the drum to be supplied to the supply reel. 3 or take-up reel 4 while winding back. After that, when the lid opening member 5a of the cassette holder that has pressed the front lid 5 is removed, the front lid 5
Starts to rotate in the closing direction about the shaft 54s by the urging force of the elastic member. Along with this, the positions of the hole 55s of the front lid 5 and the shaft 65s of the upper lid 6 move forward in the tape cassette 1, and the upper lid 6 moves forward while being pulled by the front lid 5. Then, the hole 1e formed in the guide groove 13s
63s to the protrusion 8a of the locking member 8 inserted in the
When the pressing force is released, the elastic member 8 separated from the outer periphery of the flange 3a of the supply reel 3 is lowered by the urging force of the elastic member, and the locking member 8 rotates in the arrow B direction.
That is, the elastic member 8 is pressed against the outer periphery of the flange 3a of the supply reel 3 and suppresses the rotation of the supply reel so that the tape 2 does not sag.

Further, the shaft 63s of the upper lid 6 abuts and slides on the front and upper wall surfaces 15s of the guide groove 13s of the tape cassette 1, and the locus of the upper lid 6 during the rotation of the front lid 5 always depends on the shape of the wall surface 15s. The front lid 5 and the upper lid 6 are moved to a state in which the front lid 5 and the upper lid 6 close the front surface and the upper surface of the opening 11 of the tape cassette 1 as determined. Further, as the tape cassette 1 is ejected from the cassette holder that holds the tape cassette 1 and is loaded in the recording / reproducing apparatus, a slider formed on the cassette holder that presses the slider 7 rearward of the tape cassette 1. When the stopper 7a is removed, the slider 7 moves by the biasing force of the elastic member until the bottom surface of the opening 11 of the tape cassette 1 is completely closed together with the front lid 5, and the tape cassette 1 is in the closed state.

As described above, according to the tape cassette of the embodiment of the present invention, the shafts 63s, 6 of the upper lid 6 guided by the guide grooves 13s, 13t are interlocked with the upward rotation of the front lid 5.
Only by moving 3t backward, the tip portions 8a and 9a of the locking members 8 and 9 inserted into the holes 1e and 1f formed in the upper half 1a of the tape cassette 1 are pressed, and the locking member 8 is pushed. , 9 by oscillating,
The rotation of the supply reel 3 and the take-up reel 4 can be suppressed.

[0023]

As is apparent from the above description, according to the present invention, the supply reel and the take-up of the locking member are performed only by the rearward movement of the upper lid which is interlocked with the upward movement of the front lid. The reel can be pressed and released, the supply reel and the take-up reel can be prevented from rotating, and the slack of the tape can be prevented.

Further, the locking member is rocked in conjunction with the upward movement of the front lid, and the locking member can be rocked only by the operation of inserting it into the cassette holder. It is possible to simplify.

[Brief description of drawings]

FIG. 1 is a plan cross-sectional view of a main part XX of a tape cassette according to an embodiment of the present invention in a closed state.

FIG. 2 is a side view of the tape cassette in the closed state according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of the main portion YY of the tape cassette in the open state according to the embodiment of the present invention.

FIG. 4 is a side view of the tape cassette according to the embodiment of the present invention when the tape cassette is open.

FIG. 5 is a perspective view of an essential part of a reel locking member of the tape cassette according to the embodiment of the present invention.

FIG. 6 is a perspective view of the tape cassette according to the embodiment of the present invention with the lid open.

FIG. 7 is a plan view of the tape cassette in the closed state according to the embodiment of the present invention.

[Explanation of symbols]

 1 tape cassette 5 front lid 6 upper lid 8, 9 locking member

Claims (1)

[Claims] 1. A cassette main body, which is composed of an upper half and a lower half, accommodates a supply reel and a take-up reel around which a tape is wound, extends the tape over an opening, and has a guide groove on a side surface thereof. A front lid that covers the front surface of the cassette main body opening and is rotatably supported by the cassette main body; and a front cover that covers the upper surface of the cassette main body opening and is rotatably supported in conjunction with the front cover. It comprises an upper lid engaged with a guide groove of the main body, and a locking member that is axially supported by the cassette main body and comes into contact with the outer circumferences of the flanges of both reels, and the locking member is a guide groove on the side surface of the cassette main body. A tape cassette, characterized in that it projects from a hole provided in the and that the locking member is swung by the movement of the upper lid.