JPS58105467A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent the disturbance to smooth draw-out action of a magnetic tape and the damage or breakage of the tape or a cover member, by inhibiting load-in of a small-sized tape cassette into a cassette holder when the cover member is closed, and then permitting the load-in of said cassette into the cassette holder when the cover member is opened. CONSTITUTION:The 2nd tape cassette 2 is loaded from above into the cassette storing part of a case 1. In this case, the lower edge part 3a of a cover member 3 touches the tip part (upper edge) 8a of a stopper 8 before the bottom plate 2a of the cassette 2 touches an active member 6 if the member 3 is closed. Thus it is impossible to load the cassette 2 into the cassette storing part. While if the member 3 is opened, the member 6 is pushed by the plate 2a and then by an opening edge face part 2b. As a result, the member 6 turns counterclockwise against the force of a return spring 12 and centering on a shaft 7. Accordingly the stopper 8 turns clockwise centering on a shaft 9 and via a coupling member 10. As a result, the cassette 2 is loaded into the cassette storing part, and at the same time a magnetic tape 4 can be drawn outside.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for recording or reproducing signals using magnetic tape, such as an audio tape recorder or a video tape recorder (hereinafter collectively referred to as a magnetic tape apparatus). This relates to a cassette adapter that is effective for use.

Depending on the application, magnetic tape devices include large magnetic tape devices that use large tape cassettes with many magnetic tape winding devices for long-time recording or playback;
There is a small magnetic tape device that uses a small tape cassette that is small and lightweight and has a relatively small amount of magnetic tape wound therein so as to be convenient for outdoor portable use.

In this case, it goes without saying that both of the above magnetic tape devices are used.

The configurations such as the tape running path and the spacing between the reel stands (reel shafts) are different, and the tape cassettes used for both are different in not only the reel spacing but also the external dimensions, and the large tape cassette and the small tape cassette are different from each other. However, even if the recording formats of magnetic tapes are the same, it is difficult to provide mutual compatibility.

In view of these points, it is an object of the present invention to provide a cassette adapter that allows a small tape cassette to be easily applied to a large magnetic tape device when the recording formats of the magnetic tapes are the same. In particular, when using a small tape cassette that has an opening in the front for allowing the magnetic tape to be drawn out and a rotatable lid member that can open and close the opening, When the lid member is in the closed state, a small tape cassette cannot be loaded into the cassette holder,
To provide a cassette adapter having a tape cassette erroneous insertion prevention function that allows a small tape cassette to be loaded into the interior only when the lid is open.

Hereinafter, the present invention will be explained based on the illustrated embodiments. Hereinafter, the large tape cassette will be referred to as a first tape cassette, and the small tape cassette will be referred to as a second tape cassette.

FIG. 1 is a perspective view showing the configuration of essential parts of an embodiment of the present invention, in which a predetermined portion of a case 1 constituting a cassette adapter according to the present invention having a size and shape applicable to a large-sized magnetic tape device is shown. This figure shows a state in which a second tape cassette 2 applicable to a small magnetic tape device is loaded in the cassette accommodating section.

The second tape cassette 2 is smaller than the first tape cassette that can be applied to a large-sized magnetic tape device, and has a magnetic tape similar to (same width) as the magnetic tape of the first tape cassette on its front surface. It has an opening A that can be pulled out outward in a loop shape, and a rotatable lid member 3 that can open and close the opening A.

Although not shown, the magnetic tape 4 is wound from a supply reel built into the second tape cassette 2 through the tape guide and the opening A onto a take-up reel. Also, this second tape cassette 2 is connected to the case 1.
The position is determined by a positioning member (not shown) provided in the cassette accommodating section.

The lower 7 langes of the take-up reel of the second tape cassette 2 have a gear 2o, and the take-up reel base of the large magnetic tape device (not shown)
It meshes with a gear 24 provided in the. Reference numeral B designates an opening provided on the front surface of the case 1, which allows the magnetic tape 4 to be pulled out further to the outside of the case 1.

Note that although not shown in the drawings since they are not directly related to the present invention, the case 1 includes a magnetic tape 4 in the second tape cassette 2 loaded into the cassette storage section.
A pair of tape pulling pins (or Equipped with a tape pull-out mechanism including rollers). Of course, the magnetic tape 4 may be pulled out by other suitable means in place of the tape pulling mechanism as described above. By the way, the second tape cassette 2 may be attached to a large magnetic tape device for recording or recording. When attempting to play the tape, it is necessary to open the lid member 3 and insert the second tape cassette 2 into the cassette accommodating portion of the case 1. This is because if the magnetic tape 4 is inserted with the lid closed, the magnetic tape 4 will not be pulled out, or if the tape is forcibly pulled out by the tape pulling mechanism described above, the magnetic tape 4 and the lid member 3 will be removed. This is because it may cause damage or breakage.

For this reason, in the present invention, the second tape cassette cannot be inserted into the cassette accommodating portion of the case when the lid is closed. This will be explained with reference to FIGS. 2 and 3.

In the same figure, 5 is a base provided, for example, in the portion C of the case 1 shown in FIG. The base body is moved by the support shaft 7 so that it is pressed by the bottom plate portion 2a and further the open end surface portion 2b of the tape cassette 2 and is displaced from the first position shown in FIG. 2 to the second position shown in FIG. 6 is an actuating member vertically rotatably supported. Reference numeral 8 denotes a support shaft such that at least the tip portion 8a can be displaced between a third position located in the cassette accommodating portion as shown in FIG. 2 and a fourth position spaced from the cassette accommodating portion as shown in FIG. 9 is a stopper vertically rotatably supported on the base 6, and this is a stopper located at the lower end of the lid member 3 of the second tape cassette 2 which is in the closed state when in the third position shown in FIG. 3a to prevent the second tape cassette 2 from being inserted into the cassette accommodating portion.

10 indicates that when the actuating member 6 is in the first position, K indicates that the stopper 8 is in the third position (as shown in FIG. 2), and when the actuating member 6 is in the second position, the stopper 8 is in the third position. 4 position (as shown in Figure 3),
This is a connecting member that interlocks the actuating member 6 and the stopper 8. Note that one end 10a of the connecting member 10 on the stopper 8 side is slidably inserted into a long hole 11 formed near the pivot point of the stopper 8, and is prevented from coming out. Reference numeral 12 denotes a torsion spring that moves and biases the actuating member 6 to the first position and the stopper 8 to the third position, as shown in FIG. Above,
A mechanism for preventing incorrect cassette insertion is configured.

With the above configuration, when the second tape cassette 2 is inserted into the cassette accommodating portion of the case 1 from above and loaded, if the lid member 3 is in the closed state, as shown in FIG. , the lower end 3a of the lid member 3 contacts the tip (upper end) 8a of the stopper 8 before the bottom plate 2a of the second tape cassette 2 contacts the actuating member 6, so that the second tape cassette 2 cannot be inserted into the cassette housing.

On the other hand, when the lid member 3 is inserted with the lid open, the malfunctioning member 6 is twisted due to the activation member 6 being pushed by the bottom plate portion 2a of the second tape cassette 2 and further by the open end surface portion 2b. The stopper 8 rotates counterclockwise around the support shaft 7 against the spring force of the spring 12, and the stopper 8 rotates clockwise around the support shaft 9 via the connecting member 10. The result will be as shown in Figure 3. As a result, the second tape cassette 2 is loaded into the cassette accommodating section, and the magnetic tape 4 can be pulled out.

Note that when the second tape cassette 2 is removed upward from the cassette accommodating section in the state shown in FIG. 3, the torsion spring 1
It goes without saying that the spring force of 2 causes the operating member 6 and the stopper 8 to return to their original states shown in FIG.

As is clear from the above description, the cassette adapter of the present invention allows the second tape cassette with the lid open to be loaded into the cassette accommodating section, and the second tape cassette with the lid closed can be loaded into the cassette accommodating section. Since it is configured to prevent loading of the tape cassette in step 2, it may interfere with the smooth pulling out of the magnetic tape due to forgetting to open the lid of the tape cassette in step 2, or damage the magnetic tape or the lid. This cassette adapter has an extremely excellent feature of being able to prevent damage to the cassette adapter and, if a tape pull-out mechanism is built into this cassette adapter, also prevent damage to the tape pull-out mechanism. be.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part of an embodiment of the present invention, and FIGS. 2 and 3 are enlarged side sectional views of the main part in various states of the embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Case, 2... Second tape cassette, 3... Lid member, 4... Magnetic tape, 5... Base body, 6... Operating member, 8
...stopper, 10...connection member,
12...Torsion spring. Name of agent: Patent attorney Toshio Nakao and one other name
1 figure

Claims (2)

[Claims] (1) A second tape cassette, which is smaller than the first tape cassette and has an opening in the front and a rotatable lid member that can open and close the opening, is removably stored in a predetermined cassette housing. , and detects whether the lid member of the second tape cassette and the case having the same size as the first tape cassette is open or closed, and only when the lid is in the closed state, A cassette adapter comprising a cassette erroneous insertion prevention mechanism that prevents insertion of a second cassette into the cassette accommodating portion. (2) The cassette erroneous insertion prevention mechanism includes an actuating member that is pressed by the second tape cassette and displaced from the first position to the second position when the second tape cassette is inserted into the cassette accommodating part, and at least a distal end portion. is provided so that it can be displaced between a third position located in the cassette accommodating part and a fourth position spaced apart from the cassette accommodating part, and when in the third position, the tip part is in a closed state. a stopper that can come into contact with the lower end of the lid member of the second tape cassette; when the actuating member is in the first position, the stopper is in the third position; and the actuating member is in the third position; a connecting member for interlocking the actuating member and the stopper so that the stopper is in the fourth position when the stopper is in the second position; and a connecting member that brings the actuating member to the first position and brings the stopper to the third position. the actuating member and the stopper are arranged so that when the second tape cassette with the lid closed is inserted into the cassette accommodating portion, the stopper is in the third position; The leading end comes into contact with the lower end of the lid member of the second tape cassette to prevent the second tape cassette from being loaded into the cassette accommodating section, and the second tape cassette with the lid open is inserted into the cassette accommodating section. When inserting, the second tape cassette moves the actuating member from the first position to the second position to bring the stopper from the third position to the fourth position, and inserts the stopper into the cassette storage section. The cassette adapter 0 according to claim (1), characterized in that the cassette adapter 0 is connected to allow loading.