JPH04109452A - tape cassette - Google Patents

Abstract

PURPOSE:To simplify a device by providing a slide plate to cover a hole part into which a reel stand is inserted, a front cover to cover the front of a magnetic tape stretched between reels, and an energizing means to close normally the front cover, and making the front cover capable of being opened and closed in response to the moving operation of the slide plate. CONSTITUTION:The front cover 16 is installed rotatably at a lower half 11 so as to cover the front of a cassette main body 12, and besides, it is always energized by a torsion spring 17 to a direction in which it is made into an open state. A slider 19 covers the cassette lower half 11 and a part of an upper half 10, and is energized always by the torsion spring 20 to the front direction of the cassette main body 12. When the cassette main body 12 is inserted, the front cover 16 having been closed at the inside 19a of the upper surface side of the slider 19 is rotated counterclockwise around a shaft 18b by the energizing force of the torsion spring 17, and is turned into the open state. Besides, when the cassette main body 12 is moved to the direction of an arrow mark 34, the slider 19 is moved to the direction of the arrow mark 21 by the resetting force of the torsion spring 20, and the front cover 16 is rotated clockwise around the shaft 18a, and the front cover 16 is closed. Thus, the device can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a tape cassette used in a magnetic recording/reproducing device.

BACKGROUND OF THE INVENTION FIG. 5 is an external perspective view of a conventional tape cassette seen from the back side. Reference numeral 1 denotes a slider provided at the bottom of the cassette, and is usually provided to cover a hole into which a reel stand for the reel is inserted. The slider 1 is provided with holes 2a and 2b. 3 is a front cover that covers the front surface of the cassette body 4.

The front cover 3 is rotatable around a shaft 5 implanted in the cassette body 4.

In the conventional tape cassette configured as described above, when the cassette body 4 is inserted into the cassette loading device (not shown), the slider 1 moves in the direction of the arrow 6 (FIG. 6), and the hole 2a of the slider 1 moves in the direction of the arrow 6). and 2b are located corresponding to the reels included in the cassette body 4. In this state, the front cover 3 can be rotated. Thereafter, the opening operation of the front cover 3 is performed within the cassette loading device (FIG. 7).

In this state, the reel included in the cassette body 4 is also unlocked, and the magnetic tape can be pulled out.

Problems to be Solved by the Invention However, in the configuration of the tape cassette as described above,
It was necessary to perform the moving operation of the slider 1 and the opening operation of the front cover 3 by separate means. Furthermore, the reel locking and unlocking operations also had to be performed by other means. This not only complicates the configuration of the cassette loading device, but also
The device is extremely complicated in design, as it is necessary to consider the timing of the movement of the slider 1, the opening of the front cover 3, and the locking and unlocking of the reel.

In view of this, an object of the present invention is to provide a tape cassette in which the lid can be opened and the reel lock release member can be opened by moving the slider.

Means for Solving the Problems In order to achieve the above object, the tape cassette of the present invention includes a supply reel and a take-up reel on which magnetic tape is wound;
a slide plate provided to cover the hole into which the reel stand of each of the reels is inserted; a front cover that covers the front surface of the magnetic tape stretched between the supply reel and the take-up reel; The front lid is configured to open and close in response to the movement of the slide plate.

According to the present invention, with the above-described configuration, the front cover can be opened by moving the slider.

Embodiment FIG. 1 is a partially sectional plan view of a tape cassette showing an embodiment of the present invention. FIG. 2 is a side view of the same.

In FIGS. 1 and 2, 10 indicates the upper half of the cassette, and 11 indicates the lower half of the cassette. Inside the cassette body 12 is a supply reel 1 on which a magnetic tape 13 is wound.
4 and a take-up wheel 15 are each rotatably provided. The front lid 16 is rotatably provided on shafts 18a and 18b provided on the side surfaces of the lower half 11 so as to cover the front surface of the cassette body 12. Further, the front lid 16 is always biased by a torsion spring 17 in the direction of being in the open state. The slider 19 covers part of the lower half 11 and upper half 10 of the cassette. The slider 19 is always urged toward the front of the cassette body 12 (in the direction of arrow 21 in FIG. 2) by a torsion spring 20. The torsion spring 20 is twisted around a shaft 22 provided on the lower half 11, and one end is engaged with a protrusion 23 provided on the lower half 11, and the other end is engaged with a tape guide post 24 of the cassette body 12. Note that 25 is supply reel 1
The tape guide post on the 4th side is shown.

The reel lock member 26 is rotatably provided around a shaft 27 provided on the upper half 10, and is always biased counterclockwise by a torsion spring 28 around the shaft 29. The tip of the reel locking member 26 engages with the upper outer periphery of the supply reel 14 to prevent rotation of the supply reel 14 (third
Figures and Figure 4). The slider 19 is configured such that it engages the end of the reel locking member 26,30 as the slider 19 moves.
A reel lock release member 31 is provided on the top surface of the reel 9 and protrudes inward. Note that the strength of the torsion spring 20 is set to be stronger than that of the torsion spring 17.

The operation of the tape cassette of this embodiment configured as described above will be described below.

First, the case where the cassette main body 12 is inserted into the cassette loading device will be described. The cassette body 12 is
2 (Figure 4) from the direction of the cassette loading device (not shown).
When the slider 19 is inserted into the torsion spring 20 by a moving claw (not shown) provided on the device side, the slider 19 moves in the direction indicated by the arrow 3.
Move in direction 3. The front cover 16, which has been closed until now by the inner surface 19a on the upper surface side of the slider 19, is rotated counterclockwise around the shaft 18b by the biasing force of the torsion spring 17, and becomes open (FIG. 2). Further, the supply reel 14 and the take-up reel 15 are unlocked by pushing the end portions of the reel lock members 26 and 30, respectively, by the reel lock release member 31 provided on the slider 19 (FIG. 1).

At this time, the holes 19c and 19d provided on the lower surface of the slider 19 are connected to the supply reel 14 and the take-up reel 1, respectively.
5, allowing insertion of a reel drive unit (not shown). Then, the magnetic tape 13 can be pulled out.

Next, the case where the cassette main body 12 is removed from the cassette mounting device will be described. The arrow 34 (
When the slider 19 is moved in the direction shown in FIG. 2), the return force of the torsion spring 20 causes the slider 19 to move in the direction of the arrow 21. The reel lock members 26 and 30 are rotated by the return force of the torsion spring 28, and the supply reel 14 and the take-up reel 15 are rotated.
lock. When the slider 19 moves further, the upper end surface 19b of the slider 19 and the end surface 16 of the front cover 16
a comes into contact and rotates the front lid 16 clockwise around the shaft 18a, and the front lid 16 closes to its initial state. This operation is possible because the force of the torsion spring 20 is set to be stronger than the force of the torsion spring 17. At the same time, the lower holes of the supply reel 14 and the take-up reel 15 are each closed by the slider 19, and the cassette body 12 has a substantially sealed structure.

As described above, according to this embodiment, the front cover 16 can be opened and closed in conjunction with the movement of the slider 19, and the supply reel 14 and take-up reel 15 can be locked and released, so that the cassette can be attached. The device only needs to move the slider, making the device extremely simple.

In this embodiment, the front cover 16 is opened by the force of the torsion spring 17, but this configuration is different from the slider 19 and the front cover 1.
6 may be connected by an obvious method.

As described in detail, the tape cassette of the present invention allows the front cover to be opened and closed and the reel to be locked and released by simply moving the slider, thereby greatly simplifying the apparatus. Furthermore, since the cassette only needs to be moved at one location, the degree of freedom in configuring the device is increased.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view showing the operational state of one embodiment of the tape cassette of the present invention, FIG. 2 is a side view of the same embodiment, and FIG. 3 is a partially cutaway plan view showing the state before the same operation. 4 is a side view thereof, FIG. 5 is an external view showing a conventional tape cassette, and FIGS. 6 and 7 are side views of the conventional tape cassette. 10... Upper half, 11... Lower half, 1
3...Magnetic tape, 16...Front lid, 19...
・Slider, 26.30... Reel lock member. Name of Akira's agent: Patent attorney Akira Okeyaki and two others Fig. 1t, l Fig./

Claims (2)

[Claims] (1) A supply reel and a take-up reel on which magnetic tape is wound, a slide plate provided to cover a hole into which a reel stand of each of the reels is inserted, and a frame between the supply reel and the take-up reel; It consists of a front cover that covers the front surface of the stretched magnetic tape, and a biasing means that always biases the front cover in a closing direction, and the front cover is opened and closed in response to the movement of the slide plate. tape cassette. (2) A supply reel and a take-up reel on which magnetic tape is wound, a slide plate provided to cover the hole into which the reel stand of each of the reels is inserted, and a frame between the supply reel and the take-up reel; a front cover that covers the front surface of the stretched magnetic tape; a biasing means for always biasing the front cover in a closing direction; a reel locking means for normally preventing movement of the reel; and a direction for always locking the reel locking means. The tape cassette comprises a biasing means for biasing the slide plate, and opens and closes the front cover and unlocks and locks the reels in response to the movement of the slide plate.