JPH04370561A - Tape cassette holder device - Google Patents

Abstract

PURPOSE:To provide a misinserting preventing function in a simple system without providing any slit on the bottom surface of a tape cassette for this application. CONSTITUTION:Since distances between two releasing pins 20 and 21 and a misinserting preventing pin 30, provided on a cassette receiver are set narrower than the tape cassette in short width, the tape cassette is to collide with its side wall against at least one out of the releasing pins 20 and 21 and the misinserting preventing pin 30 without fail even in the inserting direction of G. As a result, the tape cassette cannot be entered anymore. Further, when the tape cassette 1 is brought into contact with the releasing pin 20 or 21 at this time, an inserting amt. of the tape cassette into a cassette holder 25 is considerably shorter than an inserting amt. in the originally correct inserting direction. The tape cassette cannot be further inserted, and hence the user can recognize his misinserting direction.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a tape cassette containing a magnetic tape that is placed in a predetermined position in order to perform recording and reproduction by winding a magnetic tape at a predetermined angle around a cylinder containing a magnetic head, such as a video tape recorder. This invention relates to a guiding tape cassette holder device.

0002

2. Description of the Related Art FIG. 11 shows an example of a tape cassette used in a conventional rotary head type recording/reproducing apparatus, viewed from the back side. In the figure, a slit portion 102 is formed at the center of the bottom of the tape cassette 100. This is necessary to prevent incorrect insertion of the tape cassette. In other words, a protrusion protruding in the tape width direction is formed in the tape cassette holder device of the magnetic recording/reproducing device at a position opposite to the slit portion 102, and when the tape cassette 100 is inserted in the direction A, the protrusion This does not prevent insertion of the cassette 100. However, if the tape cassette 100 is inserted in direction B, for example, since there is no slit in the position opposite to the protrusion, the protrusion contacts the side wall 103 and prevents the tape cassette 100 from entering further, making it clear to the user that the tape cassette is inserted in the correct direction. I can let you know that it's not there.

0003

[Problems to be Solved by the Invention] As described above, the conventional method for preventing the wrong insertion direction of the tape cassette 100, so-called erroneous insertion, is constructed by the protrusion of the tape cassette holder device and the slit portion 102 provided in the tape cassette 100. things were common. Therefore, the mechanism is very simple and it is advantageous in terms of cost. However, as a tape cassette, the tape cassette has irregularities, which poses problems in terms of aesthetics and quality.

[0004] The present invention solves the above problems, and provides a tape cassette holder device that can achieve the function of preventing incorrect insertion using a simple method similar to the conventional method and without providing a slit in the bottom surface of the tape cassette. It is an object.

[0005]

[Means for Solving the Problems] In order to achieve this object, the tape cassette holder device of the present invention has left and right side plate portions for slidingly guiding both sides of the tape cassette, and a top surface and a bottom surface of the tape cassette opening. a slider opening member that moves the slider backward by coming into contact with a part of the slider covering the tape cassette, and an erroneous insertion prevention member that is disposed forward of the slider opening member in the tape cassette insertion direction, and holds the tape cassette. A cassette holder device that guides the tape cassette to a position where recording and playback is possible, wherein the distance from the erroneous insertion prevention member to the slider release member at each distance from the erroneous insertion prevention member to the left and right sides in the direction of the left and right side plate portions. Alternatively, when the shorter distance to the left and right side plate parts is R and L, respectively, and the length of both sides of the tape cassette is D, it is configured so that R<D, L<D. .

[0006]

[Operation] With the above-described structure, when a tape cassette is inserted with the side surface of the tape cassette forward into a tape cassette holder device that holds the tape cassette and guides it to a position where recording and playback is possible, the tape cassette holder The side surface of the tape cassette comes into contact with either the erroneous insertion prevention member or the slider release member provided in the device, thereby preventing further insertion of the tape cassette.

[0007]

[Example] The following is an example of the present invention shown in FIGS. 1 to 10.
This will be explained with reference to. Note that since the tape cassette has a symmetrical configuration, only one side will be explained.

As shown in FIG. 4, the tape cassette 1 consists of an upper half 1a, a lower half 1b, a front lid 5, and a slider 6. As shown in FIG. 3, the tape cassette 1 contains
A supply reel 3 and a take-up reel 4 on which the tape 2 is wound are housed. Further, the tape 2 is stretched on the front side by fixing posts 1c and 1d formed on the tape cassette 1, and surrounds the opening 11. Front lid 5 is tape cassette 1
The slider 6 is pressed in the direction A by a spring (not shown) and placed in the opening 11 of the tape cassette 1, with the opening 11 facing the top surface. and covered by the bottom. The slider 6 faces the front lid 5, seals the tape 2 whose front surface is covered with the front lid 5, and is slidably supported by the upper half 1a and the lower half 1b at both side surfaces. As shown in FIG. 5, in the front cover 5, a long hole 5a engages with a guide pin 7 provided on the side surface of the upper half 1a, while a long hole 5b engages with a guide pin 8 implanted in the slider 6.
is engaged in.

FIG. 1 is a plan view of this tape cassette 1 viewed from the back side. The tape cassette 1 is slidably guided by the side plate portion 25a of the cassette holder 25 and held at the position shown in FIG. Slider 6 is used on the reel stand (
Reel holes 6a and 6b are provided so that the reel (not shown) can enter to engage the supply reel 3 and the take-up reel 4. Further, a locking mechanism for the slider 6 and the front lid 5 is provided at the front. The mechanism will be explained with reference to FIG. Front lid 5
A notch 5d is provided on the front surface at a slight height from the lower end into which a release pin 21 provided on the cassette holder of the recording/reproducing apparatus can enter. Reference numeral 65 denotes a locking member, which is rotatably supported by a shaft 66, but has a clockwise urging force because a thin elastic portion 100 is bent and fixed to a pin 67. A claw portion 65a provided on this locking member 65 engages with notch holes 6c, 5c provided on the side surface of the slider 6 and front lid 5, and prevents the slider 6 from moving in the direction B in FIG. At the same time, rotation of the front cover 5 in the C direction is prevented. The front cover 5 cannot be rotated in the C direction even if force is applied from the outside unless the slider 6 moves in the B direction, and this locking mechanism provides a double safety mechanism. As shown in FIG. 1, in order to slide the slider 6 in the G direction against the spring to open the opening 11, the cassette receiving portion 29 of the cassette holder 25 has two holes.
Book release pins 20 and 21 are prepared, and a notch 5d is formed in the front lid 5 so that the two release pins 20 and 21 can enter the cassette space. At the same time, a guide groove 6e is provided in the slider 6 at a position opposite to the notch 5d. Similar to the release pins 20 and 21, an incorrect insertion prevention pin 30 is provided in the cassette receiving portion 29 slightly in front of the two release pins 20 and 21 and between the two release pins 20 and 21.

The operation of the above configuration will now be explained. The tape cassette 1 is attached to the cassette holder 25 of the recording/reproducing apparatus as shown in FIG. Since the cassette holder 25 is provided with a cassette presser 26 that receives a counterclockwise rotational force from a spring 28 about a shaft 27, the tape cassette 1 is urged toward the cassette receiving portion 29. The cassette receiving portion 29 is provided with the release pins 20 and 21 described above. The front surface of the tape cassette in FIG. 2 is a cross-section taken along line E--E in FIG. When the tape cassette 1 is moved to a position where it engages with the guide groove 6e formed in the slider 6, the locking mechanism will be in the state shown in FIG. In other words, the release pin 20 presses the slope of the guide portion 65b of the lock member 65 located in the space of the guide groove 6e in FIG. Rotate counterclockwise to connect the notch hole 5c of the front cover 5, the notch hole 6c of the slider 6, and the lock member 6.
5 is disengaged from the claw portion 65a. Therefore, although the slider 6 is biased by the spring in the direction of covering the opening 11, the lock is released, so when the tape cassette 1 is further inserted into the cassette holder 25, the slider 6 resists the biasing force of the spring. Then, it moves in the direction of the supply reel 3 and the take-up reel 4. At that time, the front lid 5
As shown in FIG. 6, as the slider 6 moves, the guide pin 8 retreats and rotates approximately 90 degrees counterclockwise, exposing the magnetic tape 2 covered by the slider 6 and the front cover 5. At the same time, the opening 11 is also exposed, allowing insertion of the tape pull-out member. The locking member 65 will move to the locked position again as shown in FIG. 8, but this is due to the shape of the guide groove 65c, and it is free to choose whether it will be in the locked position or the released position in the final position. It is. As shown in FIG. 9, after the slider 6 is unlocked with the release pin 20 and the release pin 20 relatively enters the tape cassette 1 a little further and starts opening the slider 6 and the front cover 5, it prevents incorrect insertion. The pin 30 enters the cassette space. Therefore, the incorrect insertion prevention pin 30 does not come into contact with the slider 6 or the front cover 5. That is, there is a release pin 2 on the front cover 5.
There is no need for a cutout 5d corresponding to 0 and 21.

Reel hole 6 provided on the back surface of slider 6
a, 6b are tape cassettes 1 by movement of the slider 6.
The supply reel 3 and take-up reel 4 are moved to the positions of the built-in supply reel 3 and take-up reel 4, and the bottom surfaces of the supply reel 3 and take-up reel 4 are exposed. When the tape cassette 1 is inserted into the standard position of the recording/reproducing apparatus in this state, the tape pull-out member inserted into the opening 11 of the tape cassette 1 pulls out the tape 2 from the supply reel 3 or the take-up reel 4, and the rotating head is mounted. The tape 2 can be moved to a position near the drum and wound around the drum equipped with a rotating head, and the drum equipped with the rotating head is rotated to rotate the supply reel 3 and the take-up reel 4 to run the tape. This makes it possible to record on or reproduce the tape 2.

Next, the case where the tape cassette 1 is inserted in the wrong direction will be explained. Although several directions are possible for inserting the tape cassette, we will examine the insertion operation in the F direction in FIG. 3, where an operational error is most likely to harm the apparatus. The reason why the F direction is most likely to cause damage to the device is as follows.

■When the cassette dimensions are L2 and L3, L
Since 2<L3, when inserted in the F direction, the insertion stroke becomes longer than the original stroke, and if the abnormal operation is not notified early, there is a risk of collision with the rotating head cylinder or the like.

■The width of the cassette holder is L3, so if you insert a cassette with a width of L2 into it, the horizontal position of the cassette with respect to the cassette holder 25 at the time of insertion cannot be determined, so the detection of the cassette is difficult. The method becomes complicated.

FIG. 10 shows a plan view of the tape cassette 1 inserted into the cassette holder 25 from the F direction. Two release pins 20 and 21 provided on the cassette receiver 29
Let the distances between the erroneous insertion prevention pin 30 and the erroneous insertion prevention pin 30 be R and L, respectively. On the other hand, let D be the width of the shorter side of the tape cassette 1. The position of the incorrect insertion prevention pin is determined so that the dimensional relationship is R<D and L<D. Then, even if the tape cassette 1 is inserted from the F direction, the side wall 1c will always touch the release pin 2 as shown in Figure 10.
0, 21, and at least one of the erroneous insertion prevention pins 30 will collide. Therefore, the tape cassette cannot be penetrated any further. Furthermore, if the tape cassette 1 at this time comes into contact with the release pin 20 or 21,
The amount of insertion of the tape cassette 1 into the cassette holder 25 is considerably shorter than the amount of insertion from the original correct insertion direction. If it is the correct insertion operation, the release pin will
This is because, as shown in FIG. 8, the slider 6 is unlocked from the front surface of the tape cassette 1, and the slider 6 is allowed to enter by the amount of its own movement stroke. This means that even if the insertion is performed in a direction other than F, for example from the rear of the tape cassette 1, the amount of insertion of the release pin 2 will be smaller than the insertion amount in the correct insertion direction.
, 21, the tape cassette cannot be inserted any further, making the user aware of the wrong insertion direction. Similarly, when the tape cassette 1 comes into contact with the incorrect insertion prevention pin 30, the insertable length becomes shorter than the normal insertion length of the tape cassette 1, so that the user can be made aware of the incorrect insertion direction.

In this embodiment, there are two release pins, and the distances R and L from the incorrect insertion prevention pin 30 are the distances from these two release pins. However, for example, if only one of the 20 release pins is used. , the distance R is the distance between the release pin 20 and the erroneous insertion prevention pin 30, and the distance L is the distance between the erroneous insertion prevention pin 30 and the side plate portion 25a, and the distance R is the distance between the erroneous insertion prevention pin 30 and the side plate part 25a, and the distance R is the distance between the erroneous insertion prevention pin 30 and the side plate part 25a. A similar effect can be obtained by determining the position of the pin 30. Furthermore, it is clear that the configuration described above has no problem even if the left and right sides are reversed.

[0017]

As is clear from the above description, according to the tape cassette holder device of the present invention, the slider and front cover can be unlocked and Equipped with a release pin that moves rearward to expose the magnetic tape stretched on the front, and a pin to prevent incorrect insertion, and by defining their position relative to the length of the side of the cassette, it will not be completely inserted in any direction other than the correct insertion direction. The insertion amount required for storage in the cassette holder is not secured. Therefore, the user can notice the wrong insertion direction of the tape cassette. Furthermore, since the mechanism for preventing erroneous insertion can be constructed using a member for unlocking and opening the slider and one erroneous insertion prevention pin, it is inexpensive and reliable. Furthermore, since it is not necessary to form a slit for guiding the release pin in the cassette exterior part, the tape cassette can be made very superior in terms of aesthetics and quality.

[Brief explanation of drawings]

FIG. 1 is a plan view of a tape cassette according to an embodiment of the present invention when it is stored in a cassette holder.

[Figure 2] Side view of Figure 1

FIG. 3 is an external plan view of a tape cassette according to an embodiment of the present invention.

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

[Fig. 5] Side view of the tape cassette according to the embodiment of the present invention when the front lid is closed.

[Fig. 6] Side view of the tape cassette according to the embodiment of the present invention when the front lid is opened.

[Figure 7] Plan view of the main part of the locking mechanism when locking the slider

[Figure 8] Plan view of the main part of the locking mechanism when the slider is unlocked

[Figure 9] Plan view of the main part of the locking mechanism when the slider is opened

[Figure 10] Plan view of the tape cassette incorrect insertion prevention mechanism

[Figure 11] Back view of conventional tape cassette

[Explanation of symbols]

1 Tape cassette 2　Tape 5 Front lid 6 Slider 20, 21 Release pin 30　Incorrect insertion prevention pin 65 Lock member

Claims (1)

[Claims] 1. Left and right side plate parts that slide and guide both sides of the tape cassette, and a slider opening member that abuts a part of the slider that covers the top and bottom surfaces of the tape cassette opening and moves the slider backward. and an erroneous insertion prevention member disposed ahead of the slider release member in the tape cassette insertion direction, the cassette holder device holds the tape cassette and guides the tape cassette to a position where recording and playback is possible. The shorter distance from the insertion prevention member to the slider release member or the distance from the left and right side plate portions to the left and right side plate portions is R and L, respectively.
A tape cassette holder device configured such that R<D and L<D, where D is the length of both sides of the tape cassette.