JPH01320669A - Tape cassette loader - Google Patents

Abstract

PURPOSE:To prevent an accident from happening due to insertion of a foreign matter by opening an opening and closing door in interlocking with a cassette inserting operation only at the time of loading a tape cassette with a lock claws and keeping the opening and closing door unopened at the time of inserting a substance other than the tape cassette. CONSTITUTION:When the tape cassette 1 is inserted, it is brought into contact with tip parts 21 of right and left lock claws, so as to turn the tip parts 21 and moreover to turn also tip parts 22, and consequently the opening and closing door 7 which has been locked up by the tip parts 22 with a lock groove 23 is released from the locking state, and then the cassette 1 is pushed into a prescribed position in a cassette holder 5. Then, when the cassette 1 is taken out after recording and reproducing, the cassette 1 is returned together with the holder 5 to come into contact with the claws 8, so that the claws 8 are pressed down, and simultaneously the door 7 is sprung up to eject the cassette from a main body 2. Now, in case of the insertion of the foreign matter other than the cassette 1, the door 7 is not opened because the door 7 is obstructed by the claws 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tape cassette loading device for audio or video tape recorders, etc. 0. Prior Art The recent VTR industry is no longer expected to grow as much as before. However, the number of machines is increasing year by year, and the competition for market share among companies is becoming more and more intense. Furthermore, the differences in performance and functionality between companies are narrowing, and we expect that there will be many moves to find superiority over other companies in slight differences in appearance, usability, etc. be done.

For example, most of the tape cassette loading devices for current stationary VTRs are slot-in type, but since they are the point of contact with the user, they are still not perfect in terms of safety. It is difficult to say that this is a big deal, but it is thought to be one of the important points in future VTR development.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the conventional tape cassette loading device described above will be described below with reference to the drawings.

FIG. 7 is a schematic side sectional view of a tape cassette mounting device in a conventional magnetic tape device (hereinafter referred to as a VTR) when the tape cassette mounting is completed. In FIG. 7, 1 is a tape cassette, 2 is a deck (VTR) main body, 3 is a cassette insertion slot, and 4 is a tape cassette mounting device. 5 is a cassette holder for storing and holding the tape cassette 1, 6 is a holder drive arm for transporting the cassette holder 6, 7 is an opening/closing door, and 9 is a mechanical chassis. In FIG. 7, the solid line indicates the state in which the tape cassette 1 has been installed in the predetermined position on the mechanical chassis 9. At this time, the opening/closing door A is in a free state, so you can use your fingers etc. It can be opened easily (the state shown by the dotted line in the figure). FIG. 8 is a schematic side sectional view of another embodiment of the conventional tape cassette mounting device for a VTR when the tape cassette mounting is completed. In Figure 8, 6a
A drive cam is integrally formed with the holder drive arm 6, and a lock lever 11 has one end engaged with a cam groove 6b of the drive cam 6Δ. Reference numeral 12 denotes a lock lever biasing spring, one end of which is stretched over the lock lever 11 and the other end stretched over a spring hook provided on a part of the tape cassette loading device 4. In FIG. 8, the solid line indicates a state in which the tape cassette 1 has been installed in a predetermined position on the mechanical chassis 9. At this time, one end of the lock lever 11 is located immediately behind the opening/closing door 7, and the opening/closing door is This will prevent the movement (rotation) of the Therefore, there is no risk of a foreign object being accidentally or intentionally put into the tape cassette mounting device 4 or getting caught in the tape cassette mounting device 4 while the tape cassette 1 is being mounted.

On the other hand, when the tape cassette 1 is not installed (at the time of completion of ejection), the state is shown by the dotted line in the figure.

That is, the drive cam 6a rotates counterclockwise, and in conjunction with this, the lock lever 11 also rotates counterclockwise and stops at a predetermined position.

In this state, the lock lever 11 is located outside the rotation locus of the opening/closing door, so the opening/closing door 7 becomes free and can be easily opened with fingers or the like.

Problem to be Solved by the Invention However, in the above configuration, in the former case shown in FIG. 7, the opening/closing door can always be opened even when the tape cassette is installed, so when taking out the tape cassette, it is difficult to remove the tape cassette. As shown by the dotted line in Figure 7, there is a problem in that if a child in particular puts his or her hand into the device, there is a risk that the child's hand will get caught in the device and cause injury.

Furthermore, since foreign objects other than tape cassettes (for example, clothespins, children's toys, etc.) can be easily inserted into the VTR, there is also the problem that depending on the degree of trouble, the VTR may be damaged. Even in the case of the latter example shown in Figure 8, the opening/closing door is locked at least while the tape cassette is installed, so the above trouble can be avoided, but if the tape cassette is not installed. Since the opening/closing door is unlocked when there is no tape cassette, the VTR may be contaminated with foreign matter other than the tape cassette as described above.
The problem was that there was a risk of damage to the main body.

In view of the above-mentioned problems, the present invention locks the opening/closing door with a plurality of special locking claws, which prevents not only children's hands from getting caught, but also foreign objects other than regular tape cassettes accidentally or intentionally. To provide a tape cassette mounting device which prevents the tape cassette from being inserted into a VTR main body.

Means for Solving the Problems In order to solve the above problems, the tape cassette mounting device of the present invention includes a cassette insertion slot, an opening/closing door that covers the cassette insertion slot, and a plurality of tape cassette mounting devices installed near the cassette insertion slot. The device has a locking claw, and the locking claw opens the door in conjunction with the cassette insertion operation only when the tape cassette is inserted, and prevents the door from opening when an object other than the tape cassette is inserted. It is something.

According to the above-described structure, the plurality of locking claws are released in conjunction with the insertion operation, and the opening/closing door can be opened only when a regular tape cassette is inserted. This makes it possible to prevent foreign matter other than a regular tape cassette from entering the VTR body, regardless of whether or not a tape cassette is present.

EXAMPLE Hereinafter, a tape cassette mounting device according to an example of the present invention will be described with reference to the drawings. Fig. 4 is a perspective view showing a tape cassette mounting state of a magnetic tape device having a tape cassette mounting device according to an embodiment of the present invention, and Fig. 5 is a schematic side view at that time.◎In Figs. 4 and 6 Components that are the same as those of the conventional example shown in FIGS. 7 to 9 are given the same numbers. 7 is the opening/closing door, 8 is the locking claw,
Normally, it is engaged with the opening/closing door 7. FIG. 6 is an enlarged front view of the vicinity of the cassette insertion opening 3 of the tape cassette loading device 4 in one embodiment of the present invention. As can be seen from this figure, two identical locking claws 8 are provided on the left and right sides of the front lower part of the cassette insertion slot 3.

FIG. 1 is an enlarged side sectional view of the vicinity of the opening/closing door 7 of the tape cassette loading device 4 immediately before insertion of the tape cassette 1 in one embodiment of the present invention. In FIG. 1, reference numeral 10 is a lock claw biasing spring that always biases the lock claw 8 to lock the door 7. Similarly, in FIG. FIG. 3 shows an enlarged side sectional view of the tape cassette 1 in a state where it has been completely inserted, and FIG.

The operation of the tape cassette loading device 4 constructed as described above will be described below with reference to FIGS. 1 to 6. First, we will discuss the case of installing the tape cassette 1.0 As can be seen from FIGS. 5 and 6 and FIG. When tape cassette 1 is inserted from a state where movement in the insertion direction is blocked, the second
As shown in the figure, the first tips 21 of the left and right locking claws 8
At this time, the first tip 21 rotates, and the second tip 22 of the lock claw 8 also rotates, and the opening/closing door 7, which was locked between the second tip 22 and the lock groove 23, is locked. The state is released and the cassette can be pushed into the cassette holder 5 to a predetermined position. Thereafter, the tape cassette is automatically mounted at a predetermined position on the mechanical chassis 9, similar to a conventional tape cassette mounting device. Next, the tape cassette 1 is inserted into the deck body 2.
When the eject operation is performed to remove the tape cassette after recording or playback, the tape cassette 1 returns with the cassette holder 6 in a completely opposite movement to the above-mentioned insertion, contacts the lock claw 8, and is pushed downward at the same time. As shown in FIG. 3, the opening/closing door 7 is flipped upward to a state where it protrudes beyond the front surface of the deck body 2, and ejection is completed.

Thereafter, when the tape cassette 1 is completely pulled out by hand, the opening/closing door 7 and the lock claw 8 return to the state shown in FIG. 1. This state is exactly the same when the tape cassette 1 described above is installed in a predetermined position on the mechanical chassis 9, and since the opening/closing door A is blocked by the two locking claws 8, objects other than the tape cassette 1 Even if an attempt is made to insert the door, the left and right locking claws 8 are not released at the same time, so the opening/closing door 7 will not open.

In this embodiment, the position and number of the lock claws 8 are two (two places) at the bottom of the cassette insertion slot 3.
There may be two locations on both the left and right sides of the cassette insertion slot 3,
Alternatively, it may be placed at four locations in total, including the bottom and both sides. The key is the pair of locking claws 8 near the cassette insertion slot 3.
At a position where the distance between them is approximately equal to the width of the tape cassette 1,
Any location is acceptable as long as it is provided in two or more locations.

Effects of the Invention As described above, according to the present invention, the tape cassette includes a cassette insertion port, an opening/closing door that covers the cassette insertion port, and a plurality of locking claws installed in the vicinity of the cassette insertion port. Only when installed, the opening/closing door opens in conjunction with the cassette insertion operation,
By providing a structure in which the opening/closing door is prevented from opening when an object other than the tape cassette is inserted,
The extremely simple configuration prevents troubles caused by accidentally or intentionally inserting a foreign object other than a regular tape cassette, such as an accident where a child's hand gets caught, or damage to the magnetic tape unit or tape. It is possible to obtain excellent effects such as being able to prevent

[Brief explanation of the drawing]

Fig. 1 is an enlarged side sectional view of the tape cassette loading device in an embodiment of the present invention near the opening/closing door just before the tape cassette is inserted, and Fig. 2 shows the tape cassette of the same device being inserted just before it comes into contact with the opening/closing door. FIG. 3 is an enlarged side sectional view of the tape cassette of the same device in a state where the ejection operation has been completed; FIG. 6 is a schematic side view of the same device, FIG. 6 is an enlarged front view of the vicinity of the cassette insertion slot of the device, and FIG. 7 is a tape cassette 1 in a conventional magnetic tape device. FIG. 8 is a schematic side sectional view of the tape cassette mounting device in another embodiment of the conventional magnetic tape device when the tape cassette mounting is completed; FIG. The figure is an enlarged front view of the vicinity of the cassette insertion opening of the tape cassette loading device in another embodiment of the present invention. . 1...Tape cassette, 2...Deck body, 3...Cassette insertion slot, 4...Chide cassette mounting device, T...Opening/closing door, 8...
・Lock claw. Name of agent: Patent attorney Toshio Nakao and 1 other person8-
〇・Nkume 10-1 Locking claw bias 1; 1? , 5-Ichiriki Sesoto Holder B-゛Ho λ Leg',! V movement arm, arm, 7-Opening/closing field 8'-Lock claw Fig. 5 υ" Mechazoin Fig. 6 Fig. 7 6tz--Lock gum 11"-Lock lever- Fig. 8 t2゛°-Mouth
Tsukureba 2 How many people are 1? Figure 9

Claims (1)

[Claims] It has a cassette insertion opening, an opening/closing door that covers the cassette insertion opening, and a plurality of locking claws installed near the cassette insertion opening, and the locking claws are connected to the cassette insertion operation only when the tape cassette is installed. 1. A tape cassette mounting device characterized in that the opening/closing door is prevented from opening when the opening/closing door opens and an object other than the tape cassette is inserted.