JPS5894174A - Tape cassette - Google Patents

Abstract

PURPOSE:To draw out a tape out of a cassette, and to arrange a tape running path at the outside of the cassette, by making the side wall of a head side surface rotatable. CONSTITUTION:When pressing members 29, 33 press the tip of rotary guide plates 34, 35 of a tape cassette at recording and reproduction, the plates 34, 35 turn by taking posts 5, 8 as fulcrums. The plates 34, 35 are shifted to the position shown in one- dot chain lines against springs 27, 31 to draw out the running path of the tape 2 at the outside of the tape cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette, and in particular to a tape cassette that allows the magnetic tape contained therein to be pulled out from the tape cassette body without causing damage to the outside and to set the running path of the magnetic tape outside the tape cassette. Another object of the present invention is to enable the present invention to be used in a recording/reproducing apparatus using a conventional tape cassette in which the magnetic tape running path is set in a half.

Conventional tape cassettes, for example tape cassettes called compact cassettes that are generally popular for audio use, have a plurality of openings on one side of the tape cassette through which heads and pinch rollers enter and come into contact with the tape. Since the openings are all small, it is very difficult to control the position of the running magnetic tape. Furthermore, since the dimensional accuracy of the chip cassette itself is poor, it is difficult to improve the running performance of the magnetic tape.

The present invention solves the above-mentioned conventional drawbacks, and makes the side wall of the head side of the tape cassette rotatable, and uses a post provided integrally with this rotatable side wall to pull out the tape to the outside of the cassette when the tape cassette is rotated. To provide a tape cassette characterized in that a tape running path can be set outside the cassette.

An embodiment of the present invention will be described below based on the drawings. explain.

FIG. 1 shows the overall configuration of a tape cassette according to an embodiment of the present invention, in which (-) is a plan view, and (by) is a front view. A magnetic tape wound around a supply reel hub 1. (
(hereinafter referred to as tape) 2 is a first tape contact post (hereinafter referred to as post) 3, a first rotating roller 4, a second to fifth boss) 5, 6° 7.8, a second rotating roller 9 and the sixth post 1o, it is wound onto the take-up reel hub 11. The above-mentioned posts 3 and 6 are installed on the half main surface of the cassette, and the rotating rollers 4 and 9 are rotatably installed on shafts installed on the half main surface.

Reference numerals 12 and 13 denote first holes for inserting a capstan shaft provided on the main surface of the half. the second hole, 14 and 1
5 is the first and second holes for inserting the positioning pin;
is a tape pad placed on a leaf spring.

Furthermore, as shown in Φ in Fig. 1, there are first to fifth openings 1 in the side surface facing the head of the device (hereinafter referred to as the front).
7, 18, 19, 20, 21 and the side walls 22, 23, 24, 25' between the respective openings are arranged in this order. FIG. 2 shows an enlarged detail of the main part of FIG. 1. is a diagram,
FIG. 5(a) is a plan view of a main part, and FIG. 1(b) is a front view.

The post 6 is rotatably provided on the half main surface, and a rotation guide portion 34 described below is integrally fixed to the post 5. The rotation guide section 34 has an opening 18 in the center and a rotation side wall on the front side connecting the side walls 22 and 23 on both sides of the opening 18, and a back side of the tape (smooth side of the tape) when viewed from the front.
It consists of a guide plate 26 located at , and a post 6 fixed to the end of this guide plate 26 . This rotation guide part 3
4 is rotatable around the post 5, but is constantly urged toward the back of the tape cassette by a spring 27 whose one end is locked near the other post 6, and is brought into contact with the fixing member 28 to ensure positioning. being done.

In this contact state, the rotation side walls 22 and 23 of the rotation guide portion 34
is on the same plane as the other side wall portion of the front, as shown by the solid line in FIG. .7, the support shaft post 8, the other rotating roller 9
It is strung almost in a straight line along the

On the other hand, 29 is a suppressing member provided on the equipment side, which moves forward and enters the opening 17 of the tape cassette when the head comes into contact with the reproduction/recording special tape.

As shown in FIG. 3, the distal end of the suppressing member 29 has a U-shaped notch when viewed from the side, that is, it comes into contact with the end of the guide plate 26 of the rotation guide section 34, as will be described later. Tip portions 29a and 29b and a recess 29c that serves to position the tape 2 when the rotation guide plate 34 rotates are provided.

As described above, the pressing member 2e enters the opening 17 of the tape cassette during playback, and the guide plate 2 of the rotation guide section 34
When the end of 6 is pressed inward, the rotation guide part 34 rotates clockwise (in the direction of the arrow in the figure) about the post 6 and is displaced to the position shown by the dashed line against the spring 27. do.

At this time, the recess 29c of the pressing member 29 is fully inserted,
On the other hand, the postolo is located in front of the tape cassette, so
The tape 2 is positioned by the concave portion 29C of the pressing member 29 and changed to the right as shown by the dashed line in the figure, and then turned to the left by the post 6 in the rotated position. A path is formed. Therefore, the tape running path is positioned outside the tape cassette (in front of the front wall surface) by the entry of the suppressing member 29.

Note that the post 8, which serves as a supporting shaft, and the guide plate 30. Post 7 provided at the tip of this guide plate, connected rotating side wall 24.2
The structure of the second rotation guide section 36 made up of the rotation guide section 36, the second suppressing member 33 relative to the rotation guide section 35, and the operation of both of them are located symmetrically to the above and are exactly the same.

Here, the first and second suppression members 29.33 enter at the same time, and the first and second suppression members 29.33 enter at the same time. Since the second rotation guide portions 34 and 35 are rotated and protruded to the same position, the running path of the tape 2 is as shown in FIG.
-) located outside the tape cassette at the center of the front.

According to the configuration of the above embodiment, during playback and recording, the pressing member 29.33 enters the opening 17°21 of the tape cassette, presses the end of the guide plate 26.30, and presses the end of the guide plate 26.30.
．． 35 is rotated and protruded, and the tape is pulled out of the tape cassette by the post 6.7 integrated with the rotation guide portion 34.35. By doing so, it is possible to form a tape running path outside the tape cassette. It became. In the above configuration, a particularly large bending angle does not occur in the tape running path, and since the tape is pulled out by the post of the rotation guide part that is rotatably provided in a part of the tape cassette, the tape is pulled out when the tape is pulled out. without damaging it. Further, by providing a tape running path outside the tape cassette, it becomes easier to regulate the tape running position, and highly accurate tape position adjustment becomes possible. Furthermore, the winding angle between the head (not shown) and the tape is large, making it possible to stabilize the contact of the tape and greatly improve the tape running performance. In the above configuration, the concave portions of the pressing members 29 and 33 can have the functions of tape guidance and position regulation in the tape width direction, and the above-mentioned improvement in running performance can be greatly effected with a simple configuration. .

Further, when the suppressing member 29.33 is not advanced, the rotation guide portion 34.35 is moved by the fixing member 28.35 by the spring 27.31.
32, the tape running path becomes almost a straight line inside the tape cassette, and the running resistance is minimized, for example, during fast forwarding or rewinding. In particular, the springs 27, 31 mentioned above prevent the pivot guides 34, 35 from opening unexpectedly. Furthermore, when the rotation guide portions 34 and 35 do not rotate (closed condition), they have exactly the same external shape as a popular audio tape cassette, especially the position of the front opening and the tape running system. Since the paths are the same, the tape cassette of the present invention can be used in a normal tape cassette recording and reproducing device.

In the above embodiment, the post 6.8 is made rotatable to serve as the pivot for the rotation of the rotation guide, but it is not necessary to use the pivot as the post 6.8, and other configurations may be used. But it's good.

As described above, according to the present invention, a part of the front side wall of the tape cassette is rotatable, and a rotation guide part is provided, and this rotation guide part is provided with a post that abuts on the smooth side of the tape. has
Since the rotation guide part is partially pressed by an external force and rotates so that the post moves forward,
When the external force is applied, it is possible to form a tape running path in which the tape is pulled out from the front of the cassette, making it possible to run the tape with high running accuracy, and to keep the wrapping angle between the tape and the head close to the same angle. Therefore, the tape running performance can be improved. Furthermore, if the external force is removed, the shape becomes the same as a normal audio tape force set, so it is possible to run the tape through a normal tape running path, and it can also be used in devices that use conventional tape cassettes. It also has a positive effect.

[Brief explanation of drawings]

FIG. 1(,) is a top view of a tape cassette according to an embodiment of the present invention, FIG. 1(b) is a front view thereof, FIG. 2(a) is an enlarged top view of main parts, and FIG. The front view and FIG. 3 are perspective views of main parts. 2...magnetic tape, 6, 6, 7.8...
・Post, 22.23, 24.25...Side wall,
26...Guide plate, 29...Press member,
30...Guidance plate, 33...Pushing member,
34.35...Rotation guide section.

Claims (1)

[Claims] A side wall portion of the side surface of the outer casing of the tape cassette facing the head is rotatable in the tape thickness direction, and a guide post integrally provided on the side wall portion is disposed on the smooth side of the tape, A tape cassette characterized in that the tape can be drawn out from the side wall of the tape cassette by applying an external force to the side wall to rotate the side wall and the guide post together.