JPH09115265A - Tape cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb an abrupt load on a magnetic tape and the obtain the convenience of a rewinding operation by incorporating a feeding reel and a winding reel in which a magnetic tape is respectively fitted by interposing a rubber tape and gears, a motor and batteries respectively driving the reels in a cassette main body. SOLUTION: In the tape cassette 1, when a changeover member 45 is manually moved to the backward side, a lock releasing lever 34 is pressurized to release locks of tape feeding and winding reels 6, 7 and to turn on detection switches 46. Consequently, a driving motor 39 rotates with a current supplied from a motor driving power source 42 to rotate the feeding reel 6 via a reel rotating gear 40 to wind a magnetic tape 2. When the tape 2 pulls out the same rubber tape as a rubber tape 55A from the winding reel 7, since an other side is prolonged, the rewinding operation is completed and moreover, when the member 45 is moved to the forward side, the reels 6, 7 are locked and the motor is stopped. Thus, the tape 2 is prevented from being damaged by absorbing an abrupt load on the tape and the convenience of the rewinding operation is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette in which a pair of tape reels around which a magnetic tape is wound are rotatably housed inside a cassette body.

[0002]

2. Description of the Related Art A tape cassette used in a recording / reproducing apparatus such as a video tape recorder constitutes a cassette body by combining a pair of upper and lower halves formed in a substantially rectangular shallow plate shape, and supplies the tape to the inside of the cassette body. The reel and the tape take-up reel are stored rotatably. The magnetic tape is passed between the tape supply reel and the tape take-up reel via a tape running path that passes through the front surface of the cassette body.

Further, in this tape cassette, the front surface of the cassette body forming the running path of the magnetic tape is open, and a space for loading is provided continuously to the open front surface. Then, a lid member is rotatably assembled to the open front surface of the cassette body to form a tape cassette. This lid member
Usually, the front surface of the cassette body is closed so as to cover the magnetic tape, thus protecting the magnetic tape. Also,
When the tape cassette is loaded into the video tape recorder, the lid member is rotated by the lid opening member on the video tape recorder side to open the front portion.

When the tape cassette is loaded in the loading section of the video tape recorder, the tape loading mechanism is inserted into the loading space from the opened front section, and the magnetic tape is transferred from the cassette body to the recording / reproducing section of the information signal processing device. It is pulled out to and loaded.

In the video tape recorder, the tape loading mechanism enters the loading space from the open front surface of the tape cassette loaded in the loading section, pulls out the magnetic tape from the cassette body, and the magnetic tape is loaded into a predetermined area. Load on the tape path. Then, the video tape recorder rotates the tape supply reel and the tape take-up reel of the tape cassette to run the magnetic tape, and causes the tape cassette to perform a recording operation, a reproducing operation, a fast-forwarding operation, or a rewinding operation. .

[0006]

By the way, in the above-mentioned conventional tape cassette, when rewinding a recorded or replayed magnetic tape, a rewinding operation is performed by a video tape recorder or a tape rewinder dedicated to rewinding. Be seen.

However, in the conventional tape cassette, each time the rewinding operation is performed, the video tape recorder or the tape rewinder must be loaded one by one, which is troublesome and troublesome, and many other tape cassettes can be used. On the other hand, there is a problem in that it is not convenient because the rewinding operation cannot be performed at the same time.

Further, in the conventional tape cassette, there is a problem in that during the rewinding operation by the video tape recorder, the recording operation or the reproducing operation cannot be performed by the same video tape recorder, which is inconvenient. It was

[0009]

A tape cassette according to the present invention which achieves this object is a cassette body, a pair of tape reels rotatably disposed inside the cassette body, and one tape reel. The magnetic tape is wound around the other tape reel and wound around the other tape reel, a reel rotation driving unit that drives at least one tape reel to rotate, and a drive motor that drives the reel rotation driving unit. The magnetic tape is attached to at least one tape reel via an elastic member.

According to the tape cassette of the present invention constructed as described above, when the drive motor is rotated, the reel rotation drive means is driven to rotate. The reel rotation driving means drives one tape reel to rotate, and causes the magnetic tape to perform a rewinding operation and a fast-forwarding operation. When one end of the magnetic tape is wound around one tape reel, the other end pulls out the elastic member from the other tape reel. When the elastic member is pulled out from the other tape reel, the elastic member stops the rotation operation of the other tape reel and is energized as it extends due to the traveling operation of the magnetic tape. Absorbs sudden load on magnetic tape.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 1 to 7, a tape cassette shown as an embodiment of the present invention is a tape cassette 1 for a video tape recorder provided with a magnetic tape 2 having a 1/2 inch width, and as shown in FIG. , A pair of upper half 3 and lower half 4 which are formed of a synthetic resin material in a substantially rectangular shallow dish shape are combined so that their opening sides are butted, and then combined by a plurality of setscrews. A box-shaped cassette body 5 is configured. As shown in FIG. 2, the cassette main body 5 accommodates a tape supply reel 6 and a tape take-up reel 7 in which the magnetic tapes 2 are arranged side by side in the longitudinal direction so as to be freely rotatable.

The cassette body 5 is provided with a rectangular display window 8 on the ceiling surface 3A of the upper half 3 which constitutes the upper surface, and the tape supply reel 6 and the tape take-up housed inside the cassette body 5 are provided. Magnetic tape 2 wound around reel 7
The state of is visible from the outside.

Further, the upper half 3 has a pitch dimension of 92 m corresponding to the reel drive shaft on the video tape recorder side.
A pair of bearing mounting holes 9A and 9B having a diameter of 10 mm and a diameter of 10 mm
Are provided so as to penetrate therethrough. This bearing mounting hole 9
Metal reel bearings 10A and 10B having mounting holes with a hole diameter of 6 mm are inserted and fixed in A and 9B. The reel bearings 10A and 10B are rotatably supported by reel rotation shafts 11A and 11B for restricting free movement of the tape supply reel 6 and the tape take-up reel 7 in the height direction.

The tape supply reel 6 and the tape take-up reel 7 are substantially bottomed cylindrical hub portions 12A and 12B around which the magnetic tape 2 is wound, and disks provided on both sides of the hub portions 12A and 12B. The upper flange portions 13A, 13B and the lower flange portions 14A, 14B each have a shape.

The hub portions 12A and 12B are provided with reel rotation shaft mounting holes 15A and 15B in the central region thereof, and the reel rotation shaft mounting holes 15A and 15B are provided with the reel rotation shaft 11A through the upper half 3. By attaching 11B respectively, the tape supply reel 6 and the tape take-up reel 7 are rotatably accommodated in the cassette body 5.

The upper flange portions 13A and 13B have a module of 0.5 and a pitch circle diameter dimension of 88 on the outer peripheral portion.
Engaging teeth 16A and 16B each having a size of mm are formed. Further, the lower flange portions 14A and 14B have engaging teeth 17A and 17B formed on their outer peripheral portions, respectively.

Further, in the cassette body 5, the lower half 4 constituting the bottom surface is made to face the tape supply reel 6 and a part of the hub portions 12A and 12B of the tape take-up reel 7 to the outside, and these tapes Hub fitting holes 18A, 18B for restricting rotation of the supply reel 6 and the tape take-up reel 7
Is provided.

Further, the lower half 4 is integrally formed with tape guide walls 19A and 19B located on the front side. Support pins 20A and 20B are erected on the bottom surface on the front side of the lower half 4, and tape guide rollers 21A and 21B are rotatably supported by these support pins 20A and 20B.

As shown in FIG. 3, the magnetic tape 2 has rubber tapes 55A and 55B fixed to both ends with an adhesive or the like. The rubber tapes 55A and 55B are formed in a band shape from polyisoprene rubber having elasticity and high heat resistance. The rubber tapes 55A and 55B have a length of 30 m.
m, thickness dimension is 100 μm, Young's modulus is 10 to 1
It is set to 00 kgf / cm. Further, as the rubber tapes 55A and 55B, in addition to polyisoprene rubber, an elastic member having elastic force and high heat resistance such as silicon rubber, butyl rubber, or fluororubber may be applied.

The magnetic tape 2 is attached to the hub portions 12A and 12B of the tape supply reel 6 and the tape take-up reel 7, respectively.
Rubber tapes 55A, 5 by clampers 22A, 22B
Both ends of 5B are fixed. After the magnetic tape 2 is pulled out from the tape supply reel 6, the tape guide wall 19
Guided by A, 19B and tape guide rollers 21A, 21B, they run along the front surface of the cassette body 5 and are wound on the tape winding reel 7.

As shown in FIG. 2, the cassette body 5 has a front portion which is opened over substantially the entire width direction, and the loading means on the video tape recorder side is continuously inserted from the front portion. Each of them is provided with a convex tape-drawing portion 23. The cassette body 5 is partitioned by a partition wall 24 between an internal space in which the tape supply reel 6 and the tape take-up reel 7 are rotatably accommodated and the tape pull-out portion 23.

A lid member 25 for closing the opened front portion is rotatably attached to the cassette body 5.
The lid member 25 has a length that is substantially equal to the width of the cassette body 5, and side walls 26A and 26B that are opposed to each other and form a fulcrum portion are integrally formed at both ends so that the lid member 25 has a substantially general shape. It is formed in a letter shape. Pin shafts 27A and 27B are integrally formed on the inner surfaces of the side wall portions 26A and 26B with their axes aligned. A torsion spring 28 is attached to one of the pin shafts 27B.

On the other hand, on the cassette body 5 side, the upper half 3
The one side wall on the side of the lower half 4 projects and extends to form one lid member supporting portion 29A, and the one side wall of the lower half 4 on the side of the other side projects and extends to configure the other lid member supporting portion 29B. Corresponding to the pin shafts 27A and 27B of the lid member 25, shaft holes 30A and 30B are provided in these lid member support portions 29A and 29B with their axes aligned. The lid member 25 has the pin shafts 27A and 27B in the shaft holes 3
By engaging with 0A and 30B, the cassette body 5
It is rotatably combined with the front part of the.

The lid member 25 closes the open front surface of the cassette body 5 in the normal state, and the tape guide wall 1
The magnetic tape 2 is covered between 9A and 19B to protect the magnetic tape 2 from adhesion of dust or the like or external force. The lid member 25 rotates to move the cassette body 5
With the front surface of the magnetic tape 2 open, the magnetic tape 2 is exposed to the front surface of the cassette body 5 by rotating to the upper surface of the upper half 3. In this case, the torsion spring 28 accumulates elastic force, so that the cassette main body 5 moves against the lid member 25.
A habit of turning in the direction of closing the front part of the.

The lower half 4 is provided with a lid lock lever 31 which is located at a lid member supporting portion 29B with which the lid member 25 is assembled and which holds the lid member 25 in a locked state in a normal state. Lid lock lever 31
Releases the lid member 25 from the locked state when the lid drive member on the video tape recorder side enters.

Further, the lower half 4 is provided with a reel lock mechanism 32 for preventing the magnetic tape 2 wound by the tape supply reel 6 and the tape take-up reel 7 moving in a normal state from loosening. ing. The reel lock mechanism 32 is arranged in the central portion on the back surface side of the lower half 4, and the lower flange portion 14A of the tape supply reel 6 is
A lock lever 33A elastically contacting the engaging teeth 17A formed on the outer peripheral portion of 14B, a lock lever 33B elastically contacting the engaging teeth 17B formed on the outer peripheral portions of the lower flange portions 14A and 14B of the tape take-up reel 7, and Lock lever 33
A lock release lever 34 for rotating the A and 33B.

The lock levers 33A and 33B are located between the tape supply reel 6 and the tape take-up reel 7 and are erected on the bottom surface of the lower half 4 and are parallel to each other.
It is rotatably assembled by A and 35B. The lock release lever 34 is pivoted to a space formed by guide walls 36A and 36B which are located between the tape supply reel 6 and the tape take-up reel 7 and which are erected on the bottom surface of the lower half 4 and which are parallel to each other. It is freely assembled.

The cassette body 5 is formed so as to rise from the bottom surfaces of the upper half 3 and the lower half 4, and has the lower flange portions 14A, 1A of the tape supply reel 6 and the tape take-up reel 7.
A tape reel guide wall 37 for holding the outer peripheral portion of 4B,
A substantially triangular space formed by the rising peripheral wall 38 forming the outer peripheral wall of the cassette body 5 is provided at both corners on the back side.

On the other hand, as shown in FIG. 4, a drive motor 39 and a reel rotation gear 40 are housed in the corner portion. A small DC motor is used as the drive motor 39, and is fixed to the bottom surface of the lower half 4 of the one corner by a motor bracket 41. This drive motor 39
The reel rotation gear 40 is inserted and attached to the drive shaft. The reel rotary gear 40 has a module of 0.5 and a pitch circle diameter of 15 mm, and is meshed with engaging teeth 16A formed on the outer peripheral portion of the upper flange portion 13A of the tape supply reel 6.

Also, the tape guide wall 1 is provided on the lower half 4.
A motor drive power supply 42, which is located between 9A and 19B and the tape reel guide wall 37, is connected to the drive motor 39 by a lead wire and supplies a supply current to the drive motor 39. A mercury battery is used as the motor drive power source 42, and is fixed to the bottom surface of the lower half 4 by a battery holder 43. Motor drive power supply 4
Regarding No. 2, one pole is connected to the drive motor 39 via a lead wire, and the other pole is connected to the switching mechanism 44 via a lead wire.

A switching mechanism 44 is attached to the surface of the upper half 3 so as to freely slide.
The switching mechanism 44 includes a switching member 45 having a substantially rectangular plate shape.
And a detection switch 46 fixed to this inner surface.

The switching member 45 is located below the knob plate 45A that is manually slid in the front-rear direction, and a switching lever 45B is integrally formed therewith. The switching member 45 is in a state in which the tip end portion of the switching lever 45B is arranged at a predetermined distance from the tip end portion of the lock release lever 34 rotatably assembled to the lower half 4.

As the detection switch 46, a push-type micro switch having a switch main body 46A and an operator 46B is used, and the operator 46B is fixed in a state in which it is directed forward. At this time, the detection switch 46
Is arranged at a predetermined distance from the tip of the switching lever 45B of the switching member 45.

The detection switch 46, as shown in FIG.
One pole of the operator 46B is connected to the drive motor 39 via the lead wire.
And one pole of the switch body 46A is connected to the motor drive power source 42 via a lead wire.
The other pole of A is connected to the drive motor 39 and the motor drive power source 42 via a lead wire. The detection switch 46 is
One pole of the operator 46B is brought into contact with one pole of the switch body 46A to be turned on, one pole of the operator 46B is brought into contact with the other pole of the switch body 46A to be turned off, and an input terminal of the drive motor 39 is also provided. The two are short-circuited, and the supply current supplied from the motor drive power supply 42 to the drive motor 39 is switched between the supply state and the stop state.

On the other hand, the other corner portion has various kinds of holes such as a tape length detecting hole for detecting the length of the magnetic tape 2 or a tape specification identifying hole for identifying the type of the magnetic tape 2 on the bottom surface of the lower half 4. Identification holes are provided.

In the tape cassette 1 of the embodiment configured as described above, the switching member 45 is manually slid backward as shown by an arrow M in FIG.
In the tape cassette 1, the switching lever 45B of the switching member 45 is moved rearward, and the tip of the switching lever 45B presses the lock release lever 34.
The lock release lever 34 is rotated toward the back side and presses the lock lever. In the lock lever, the operating portion is pivoted rearward, the locking portion is prevented from being engaged with the engaging teeth of the tape supply reel 6 and the tape take-up reel 7, and the tape supply reel 6 and the tape winding reel are engaged. The locked state of the take-up reel 7 is released.

In the tape cassette 1, when the switching member 45 is slid backward, the switching lever 45B of the switching member 45 is moved rearward, as shown in FIG. 5, and the switching lever 45B is moved. The tip of the button pushes the operator 46B of the detection switch 46. In the detection switch 46, one pole of the operator 46B is the switch body 46.
The drive motor 39 is brought into contact with one pole of A and turned on.
Supply current is supplied to.

The drive motor 39 is rotated counterclockwise as shown in FIG. 2, and drives the reel rotation gear 40 attached to the drive shaft in the counterclockwise direction as shown in FIG. The reel rotation gear 40 rotationally drives the tape supply reel 6 in the clockwise direction shown in FIG. 2 via the upper flange portions 13A and 13B whose engaging teeth mesh with the gear portion 40A. When the tape supply reel 6 is rotated clockwise as shown in FIG. 2, the magnetic tape 2 fixed to the hub portion 12A is wound up. Therefore, in the tape cassette 1, when the switching member 45 is manually slid backward, the locked state of the tape supply reel 6 and the tape take-up reel 7 is released, and the rewinding operation for the magnetic tape 2 is performed. Done.

When one end of the magnetic tape 2 is wound around the tape supply reel 6, the other end of the magnetic tape 2 is covered with the rubber tape 55.
Pull B out of the tape take-up reel 7. Rubber tape 55
When B is pulled out from the tape take-up reel 7, it stops the rotation operation of the tape take-up reel 7. Rubber tape 55
B is extended by the running operation of the magnetic tape 2 when the tape winding reel 7 stops rotating. Rubber tape 5
5B is energized as it extends, and the magnetic tape 2
To allow the running operation of the magnetic tape 2 to absorb a sudden load applied to the magnetic tape 2. Therefore, the tape cassette 1 is
The magnetic tape 2 is pulled back slightly by the energized elastic force of the rubber tape 55B, and the rewinding operation for the magnetic tape 2 is completed.

Further, in the tape cassette 1, when the switching member 45 is manually slid forward as shown by an arrow N in FIG. 5, the switching lever 45B of the switching member 45 moves backward in the tape cassette 1. When the switching lever 45B is moved to the side, the tip end portion of the switching lever 45B releases the pressing state of the lock release lever 34. The lock release lever 34 is pivoted forward to release the pressing state of the lock lever. In the lock lever, the actuating portion is rotated forward, the locking portion is engaged with the engaging teeth of the tape supply reel 6 and the tape take-up reel 7, and the tape supply reel 6 and the tape take-up reel. Lock 7

The tape cassette 1 has a switching member 4 when the switching member 45 is slid forward.
The switching lever 45B of No. 5 is moved to the front side,
The tip of the switching lever 45B is the detection switch 46.
The pressed state of the operator 46B is released. In the detection switch 46, one pole of the operator 46B is the switch body 46A.
While being brought into contact with the other pole to be turned off, the input terminals of the drive motor 39 are short-circuited as indicated by an arrow P in FIG. 6, and the supply current to the drive motor 39 is stopped. The drive motor 39 stops the rotation operation of the tape supply reel 6 via the reel rotation gear 40. Therefore, in the tape cassette 1, when the switching member 45 is manually slid forward, the tape supply reel 6 and the tape take-up reel 7 are locked, and the rewinding operation for the magnetic tape 2 is stopped. .

At this time, when the tape cassette 1 is loaded into the video tape cassette after the supply current to the drive motor 39 is stopped and a recording operation, a reproducing operation, a fast forward operation or a rewinding operation is performed, the drive motor is driven. The tape supply reel 6 and the tape take-up reel 7 are smoothly rotated without the load of 39.

The tape cassette 1 of the embodiment is taken out from the video tape recorder after being loaded in the video tape recorder and recording for one hour, and the switching member 45 is slid backward. It was confirmed that there was no problem such as breakage of the magnetic tape 2 and the magnetic tape 2 was wound up to the end on the tape supply reel 6.
It was also confirmed that when the tape cassette 1 was loaded into the video tape recorder and the fast-forward operation for the magnetic tape 2 was performed, the tape cassette 1 was fed to the end without being stopped halfway due to the load on the drive motor 39.

In the tape cassette 1 of the embodiment,
Although a micro switch was used as the detection switch 46 that constitutes the switching mechanism 44, as shown in FIG. 7, a first connection terminal 47A is provided at the tip of the switching lever 45B and is fixed to the inner surface of the upper half 3. The mounting plate 48 may be provided with the second connection terminal 47B and used as the detection switch 49.

At this time, the second connection terminal 47B is connected to the first lever provided on the switching lever 45B of the switching member 45.
The connection terminals 47A are arranged at a predetermined interval. In the detection switch 49, one pole of the first contact terminal 47A is connected to the drive motor 39 via a lead wire, and one pole of the second connection terminal 47B is connected to the motor drive power supply 42 via a lead wire, Second connection terminal 47
The other pole of B is connected to the drive motor 39 and the motor drive power source 42 via a lead wire.

The detection switch 49 has a first contact terminal 47A when the switching member 45 is slid backward.
When one pole of the first contact terminal 47A is brought into contact with one pole of the second connection terminal 47B to be turned on and the switching member 45 is slid forward, one pole of the first contact terminal 47A is connected to the second connection terminal 47B. While being in contact with the other pole of the
The input terminals of the drive motor 39 are short-circuited, and the supply current supplied from the motor drive power supply 42 to the drive motor 39 is switched between the supply state and the stop state.

Further, in the tape cassette 1 of the embodiment, the drive motor 39 and the reel rotation gear 40 are housed in one corner of the cassette body 5 on the tape supply reel 6 side, and the rewinding operation for the magnetic tape 2 is performed. , The drive motor 39 and the reel rotation gear 40 are the cassette body 5
The tape take-up reel 7 may be housed in the other corner of the tape take-up reel 7 so that the magnetic tape 2 can be fast-forwarded.

At this time, in the tape cassette 1, when the other end of the magnetic tape 2 is wound on the tape take-up reel 7, the other end of the magnetic tape 2 pulls out the rubber tape 55A from the tape supply reel 6. When the rubber tape 55A is pulled out from the tape supply reel 6, the rotation operation of the tape supply reel 6 is stopped. The rubber tape 55A is extended by the running operation of the magnetic tape 2 when the tape supply reel 6 stops rotating. The rubber tape 55A is energized as it extends, allows the running operation of the magnetic tape 2, and absorbs a sudden load applied to the magnetic tape 2. Therefore, the tape cassette 1 has the rubber tape 55.
The magnetic tape 2 is pulled back slightly by the elastic force of A, and the fast-forward operation for the magnetic tape 2 ends.

Furthermore, the tape cassette 1 of the embodiment
Then, the drive motor 39 and the reel rotation gear 40 are connected to the tape supply reel 6 side of the cassette body 5 and the tape winding reel 7
The magnetic tape 2 may be housed in both corners on the side so that both the rewinding operation and the fast-forwarding operation for the magnetic tape 2 are performed.

According to the above-described tape cassette 1 of the present invention, the drive motor 39 and the reel rotation gear 40 that meshes with the engaging teeth of the upper flange portions 13A and 13B of the tape supply reel 6 are provided. As a result, when the switching member 45 slides backward, the drive motor 39 rotationally drives the tape supply reel 6 to wind up the magnetic tape 2, and the convenience of the rewinding operation for the magnetic tape 2 is illustrated. To be

According to the tape cassette 1, the magnetic tape 2 is fixed to the tape supply reel 6 and the tape take-up reel 7 via the rubber tapes 55A and 55B, so that the tape take-up reel 7 and the tape supply reel are provided. When the rotation operation of 6 is stopped, the running operation of the magnetic tape 2 is allowed by the rubber tapes 55A and 55B to allow the tape 2 to move.
The sudden load on the magnetic tape 2 is absorbed and damage to the magnetic tape 2 is prevented.

Furthermore, according to this tape cassette 1,
Since the switching mechanism 44 for switching the supply current supplied to the drive motor 39 to the supply state or the stop state is provided, after the drive motor 39 is stopped, it is loaded in the video tape recorder and the recording operation for the magnetic tape 2 is performed. When the reproducing operation, the fast-forwarding operation, or the rewinding operation is performed, the load of the drive motor 39 is reduced, the running operation of the magnetic tape 2 is smoothed, and the noise sound is prevented. Therefore, this tape cassette 1
The load of the drive motor 39 is reduced, the power consumption of the video tape recorder is reduced, and the life of the drive motor and the drive motor of the video tape recorder side is extended.

A tape cassette 50 shown as another embodiment of the present invention has a basic structure similar to that of the tape cassette 1 of the embodiment, as shown in FIGS. 8 to 10.
The motor drive power supply is characterized in that it has a power supply input terminal 51 for supplying a current supplied from the outside. In the following description, the same members and components as those of the above-described tape cassette 1 according to the embodiment will be designated by the same reference numerals and the description thereof will be omitted.

In another embodiment of the tape cassette 50, as shown in FIGS. 8 and 9, a power input terminal 51 is attached to the upper half 3 corresponding to the other corner of the lower half 4. As the power supply input terminal 51, one pole is connected to the drive motor 39 via a lead wire, and the other pole is connected to the switching mechanism 45 via a lead wire.

In another embodiment of the tape cassette 50 having the above-described structure, the power input terminal 51 is connected to the AC from the outside.
When the adapter is inserted and the switching member 45 is manually slid to the rear side, the tape supply reel 6 and the tape take-up reel 7 are unlocked and the magnetic tape 2 is rewound. .
Further, the tape cassette 50 has the switching member 4 with the AC adapter plugged into the power plug 51 from the outside.
When 5 is manually slid forward, the tape supply reel 6 and the tape take-up reel 7 are locked, and the rewinding operation for the magnetic tape 2 is stopped.

Incidentally, another embodiment of the tape cassette 50
Is taken out of the video tape recorder after being loaded into the video tape recorder for 1 hour of recording operation, an AC adapter is externally inserted into the power input terminal 51, and the switching member 45 is slid backward. Then, it was confirmed that when the magnetic tape 2 was smoothly wound around the tape supply reel 6 and the switching member 45 was slid forward, the rewinding operation for the magnetic tape 2 was immediately stopped.

Another embodiment of the tape cassette 50
In the above, a micro switch was used as the detection switch 46 that constitutes the switching mechanism 44. However, as shown in FIG. 10, a first connection terminal 52A is provided at the tip of the switching lever 45B, and the inner surface of the upper half 3 is provided. A second connection terminal 52B may be provided on the fixed mounting plate 53 and used as the detection switch 54.

At this time, the second connecting terminal 52B is the first connecting terminal 52B provided on the switching lever 45B of the switching member 45.
The connection terminal 52A is placed at a predetermined interval. In the detection switch 54, one pole of the first contact terminal 52A is connected to the drive motor 39 via a lead wire, and one pole of the second connection terminal 52B is connected to the motor drive power source 42 via a lead wire, Second connection terminal 52
The other pole of B is connected to the drive motor 39 and the motor drive power source 42 via a lead wire.

The detection switch 54 has a first contact terminal 52A when the switching member 45 is slid backward.
When the switching member 45 is slid forward, one pole of the first contact terminal 52A moves to one pole of the second connection terminal 52B. While being in contact with the other pole of the
The input terminals of the drive motor 39 are short-circuited, and the supply current supplied from the motor drive power supply 42 to the drive motor 39 is switched between the supply state and the stop state.

Still another embodiment of the tape cassette 5
At 0, the drive motor 39 and the reel rotation gear 40 are housed in one corner of the cassette body 5 on the tape supply reel 6 side to perform the rewinding operation for the magnetic tape 2, but the drive motor 39 and the reel rotation gear 40 are The cassette main body 5 may be housed in the other corner of the tape take-up reel 7 side so that the magnetic tape 2 can be fast-forwarded.

At this time, in the tape cassette 50, when the other end of the magnetic tape 2 is taken up by the tape take-up reel 7.
The other end of the magnetic tape 2 pulls out the rubber tape 55A from the tape supply reel 6. When the rubber tape 55A is pulled out from the tape supply reel 6, the rotation operation of the tape supply reel 6 is stopped. The rubber tape 55A is extended by the running operation of the magnetic tape 2 when the tape supply reel 6 stops rotating. The rubber tape 55A is energized as it extends, allows the running operation of the magnetic tape 2, and absorbs a sudden load applied to the magnetic tape 2. Therefore, the tape cassette 50 is the rubber tape 5
The magnetic tape 2 is pulled back slightly by the stored elastic force of 5A, and the fast-forward operation for the magnetic tape 2 is completed.

Furthermore, the tape cassette 5 of the embodiment
At 0, the drive motor 39 and the reel rotation gear 40 are housed in both the corners of the cassette body 5 on the side of the tape supply reel 6 and the side of the tape take-up reel 7, respectively, and perform both the rewinding operation and the fast-forwarding operation for the magnetic tape 2. May be configured to be performed.

According to another embodiment of the tape cassette 50 of the present invention described above, the drive motor 39 and the reel rotation gear 40 that meshes with the engaging teeth of the upper flange portions 13A and 13B of the tape supply reel 6 are provided. By being equipped,
When the switching member 45 is slid backward,
The drive motor 39 rotationally drives the tape supply reel 6 to wind up the magnetic tape 2, and the rewinding operation for the magnetic tape 2 is convenient.

According to this tape cassette 50,
Since the magnetic tape 2 is fixed to the tape supply reel 6 and the tape take-up reel 7 via the rubber tapes 55A and 55B, the tape take-up reel 7 and the tape supply reel 6
When the rotation operation of the is stopped, the rubber tapes 55A, 55B
Thus, the running operation of the magnetic tape 2 is allowed and a sudden load on the tape 2 is absorbed, and damage to the magnetic tape 2 during the rewinding operation and the fast-forwarding operation on the magnetic tape 2 is prevented.

Further, according to this tape cassette 50,
Since the switching mechanism 44 for switching the supply current supplied to the drive motor 39 to the supply state or the stop state is provided, the supply current is stopped when the drive motor 39 is stopped, and then the drive tape is loaded into the video tape recorder. When the recording operation, the reproducing operation, the fast-forwarding operation or the rewinding operation is performed on the magnetic tape 2, the load of the drive motor 39 is reduced, the running operation of the magnetic tape 2 is smoothed, and the noise noise is prevented. To be Further, in the tape cassette 1, the load of the drive motor 39 is reduced, the power consumption of the video tape recorder is reduced, and the life of the drive motor and the drive motor of the video tape recorder side is extended.

Further, according to the tape cassette 50, since the power source input terminal 51 is provided as the motor drive power source, the magnetic tape 2 can be rewound many times, and the magnetic tape 2 can be rewound. Convenience of the rewinding operation with respect to is achieved.

In addition to the tape cassettes 1 and 50 in which the lid member is formed of a member, the present invention is applicable to a tape cassette provided with a member or a lid member formed of a member, or a tape cassette without a lid member. Also applies.

In addition to the tape cassette for the video tape recorder, the present invention has a width of 4 mm, a width of 1/4 inch,
Tape cassettes containing magnetic tapes of various tape widths such as 1/2 inch width, 3/4 inch width, 1 inch width,
It is also used for recording and reproducing tape cassettes such as audio tape cassettes and tape cassettes for storing information processing devices.

[0069]

As described above, according to the tape cassette of the present invention, since the drive motor and the reel rotation drive means for rotating one tape reel are provided, the drive motor has one tape reel. The supply reel is rotationally driven to wind the magnetic tape, and the rewinding operation for the magnetic tape is convenient.

Further, according to this tape cassette, when the magnetic tape is attached to at least one tape reel via the elastic member, the rotation of the tape reel to which the elastic member is attached is stopped. The member absorbs a sudden load on the magnetic tape and prevents the magnetic tape from being damaged.

Further, according to this tape cassette, since the switching mechanism for switching the supply current supplied to the drive motor to the supply state or the stop state is provided, the supply current is stopped when the drive motor is stopped. After that, when the video tape recorder is loaded into the video tape recorder and a recording operation, a reproducing operation, a fast-forwarding operation, or a rewinding operation with respect to the magnetic tape is performed, the load of the drive motor is reduced, and the running operation of the magnetic tape is smoothed. Noise noise is prevented.

Furthermore, in this tape cassette, when the load of the drive motor is reduced, the power consumption of the video tape recorder is reduced and the life of the drive motor and the drive motor on the video tape recorder side is extended. Planned.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a tape cassette according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the tape cassette.

FIG. 3 is a perspective view showing a state in which magnetic tapes are fixed to a tape supply reel and a tape take-up reel of the tape cassette.

FIG. 4 is a perspective plan view showing the tape cassette.

FIG. 5 is a lateral cross-sectional view of a main part showing the same tape cassette.

FIG. 6 is a schematic diagram showing a drive motor and a motor drive power source of the tape cassette.

FIG. 7 is an exploded perspective view of essential parts showing a modified example of the detection switch of the tape cassette.

FIG. 8 is an exploded perspective view showing a tape cassette according to another embodiment of the present invention.

FIG. 9 is a perspective plan view showing the tape cassette.

FIG. 10 is an exploded perspective view of essential parts showing a modified example of the detection switch of the tape cassette.

[Explanation of symbols]

 1 Tape cassette 2 Magnetic tape 5 Cassette body 6 Tape supply reel 7 Tape take-up reel 39 Drive motor 40 Reel rotation gear 55A Rubber tape 55B Rubber tape

Claims (4)

[Claims] 1. A cassette main body, a pair of tape reels rotatably arranged inside the cassette main body, a magnetic tape reeled out from one tape reel and wound on the other tape reel, It is provided with a reel rotation drive means for rotating at least one tape reel and a drive motor for driving this reel rotation drive means. The magnetic tape is attached to at least one tape reel via an elastic member. Characteristic tape cassette. 2. The tape cassette according to claim 1, wherein the cassette body is provided with a drive power supply for supplying a supply current to a drive motor. 3. The cassette body is provided with a switching mechanism for switching between a state in which both input terminals of the drive motor are connected to the drive power source and a state in which both input terminals of the drive motor are short-circuited. The tape cassette according to claim 2. 4. The cassette body is provided with a reel lock mechanism for locking the rotation of the tape reel, and the switching mechanism switches the supply current to the supply state and releases the lock state of the tape reel by the reel lock mechanism. The tape cassette according to claim 3, wherein the tape cassette is a tape cassette.