JPH04295660A - Cassette mount device - Google Patents

Abstract

PURPOSE:To provide a front loading type cassette mounting device where the posture of the cassette is corrected in a holder even if the cassette is inserted slightly on the slant and it is carried to a spacified position in a normal condition. CONSTITUTION:A cassette positioning means 9, which comprises a U-shaped slide 10 provided with a pair of cassette sliding pins 11, is installed to a cassette carrier holder 1 in such a fashion that it may move freely vertically with the holder 1 and moreover in such a condition that it may be spring-energized upward usually. To side boards 4 provided with guide grooves 4b and 4c which guide the holder 1, a regulation means 14 which is shaped by a folded piece having an offset section which regulates the downward motion of the positioning means 9 is installed. When the cassette is inserted, the paired positioning pins 1 stay in a position lower than the bottom of the holer 1, and interlock with the movement of the holder 1. The regulation means 9 starts rising gradually so that the tip-pointed pins 11 may be inserted into a positioning hole of the cassette and the cassette may be carried to the specified position in a normal condition.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device for a magnetic recording/reproducing apparatus such as a video tape recorder (VTR).

0002

[Prior Art] In magnetic recording and reproducing devices such as VTRs,
In a so-called front-loading type cassette loading device in which the insertion slot for a magnetic tape cassette (hereinafter referred to as a cassette) is on the front panel surface, various measures are taken to prevent the cassette from being inserted at an angle when the cassette is inserted. However, some of the many types of cassettes have a width that exceeds the standard, and in consideration of these, the width of the cassette holder is designed to be larger than the width of the standard cassette. ing. Therefore, when inserting the cassette, it often happens that the cassette is inserted at a slight angle.

As shown in FIG. 2, one conventional method for countering this problem is to provide a holder lock lever 3 on the left side surface 1a of the holder 1, which is biased to rotate counterclockwise by a spring 2. The holder 1 is connected to a loading motor (
A gear 5 attached to the side plate 4 receives a driving force (not shown).
, 6, but if the cassette is tilted, the protruding piece 3a of the lock lever 3 will move through the bending guide piece 4a of the side plate 4.
A safety mechanism is provided which engages and prevents further movement of the holder 1 as well as ejects the cassette and reinserts the cassette. (For example, see JP-A-63-86140 G11B 15/675.)

0004

[Problems to be Solved by the Invention] With the above-mentioned configuration, if the cassette is even slightly tilted during insertion, the cassette will be ejected and the cassette must be reinserted, resulting in poor operability. There was a problem.

[0005]

[Means for Solving the Problems] A cassette loading device that includes a holder that moves between a first position for loading and unloading a cassette and a second position for pulling out a tape from the cassette, the holder always having an upper position. A cassette positioning means is movably provided with a pair of positioning pins that are biased by a spring and penetrate into positioning holes of the cassette, and the cassette positioning means is provided on a side plate provided with a guide groove for guiding the holder in conjunction with the movement of the holder. The configuration includes a regulating means for regulating the downward movement of the means.

[0006]

[Operation] When a cassette is inserted from the cassette insertion slot, the tip of the positioning pin is conically pointed, so even if the cassette is inserted at an angle, the positioning pin of the cassette positioning means will fit into the positioning hole of the cassette. After the cassette is smoothly inserted and the cassette tilt is corrected, the holder moves the cassette from a first position for loading and unloading the cassette while holding the cassette in the correct position to a second position for pulling out the tape from the cassette.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an exploded perspective view of the main parts of the present invention, and the same parts as in the conventional example shown in FIG. 2 are given the same numbers and their explanations will be omitted.

In FIG. 1, three guide pins 1b, 1c, and 1d are installed on the side surface 1a of the holder 1. A pipe 7 is inserted through the pin 1b, and an L-shaped side plate 4 is inserted into the pin 1b. After being inserted into the guide groove 4b, it is attached to one end of the link. The other end of the link 8 is attached to a lever 6a formed integrally with the gear 6. The pipe 7 is also inserted through the pin 1c, and further into the guide groove 4c of the side plate 4.

Reference numeral 9 denotes positioning means, and a pair of cassette positioning pins 11 having conically pointed tips are fixed to the bottom surface of a U-shaped slide plate 10, and slits 12 are provided on the left and right sides. The pins 1c and 1d of the holder 1 described above are inserted into the slits 12, and the slide plate 10 is movable up and down by a coil spring 13 and always urged upward in the drawing, so that the slide plate 10 moves integrally with the holder 1. A bent piece 14 is formed on the side plate 4 as a regulating means for regulating the downward movement of the positioning means 9. The stepped portion 14a of the bent piece 14 is set to have a step greater than the height of the pin 11 so that the above-mentioned cassette positioning pins 11, 11 do not get caught on the bottom surface of the cassette when the cassette is inserted. When the holder 1 moves, the tips 10a of the left and right side pieces of the slide plate 10 come into sliding contact with the inner surface of the bent piece 14. 15 and 16 are frames attached to the left and right side plates 4 and 4 with screws 18, and 17 is a retaining washer for regulating the left and right positions of the slide 10.

Next, the operation will be explained. When the cassette is completely removed, the tip 10a of the slide 10 is located on the lower surface of the step 14a of the bent piece 14 of the side plate 4, so the slide 10 is pushed down against the holder 1 against the spring 13. There is. At this time, the cassette positioning pins 11, 1
The tip of holder 1 is lower than the bottom of holder 1. Here, when the cassette is inserted into the holder 1 from the direction of arrow A and the cassette is further pushed in a little, the holder 1 moves to the back.

In conjunction with the movement of the holder 1, the tip 10a of the slide 10 slides on the stepped portion 14a of the bent piece 14, passing through the inclined portion 14b and reaching the flat portion 14c. When the tip 10a of the slide reaches the inclined portion 14b, the slide 10 begins to gradually rise due to the spring 13. At this time, the positioning hole (not shown) on the bottom of the cassette is positioned approximately above the positioning pins 11, 11 of the slide 10. Even if the cassette is installed at a slight angle, the tip of the positioning pin 11 is conically pointed, so the pin 11
, 11 are positioned in the positioning holes of the above-mentioned cassette, and as the slide 10 rises, the pins 11,
11 is inserted into the positioning hole while correcting the posture of the cassette, and finally moves the cassette together with the holder 1 to the second position while maintaining the cassette in its normal position.

When reaching the second position where the cassette installation is complete,
The bottom of the cassette is attached to the mechanism chassis height regulating pin (
(not shown), and the bent piece 1e of the holder 1
, 1e press against the top surface of the cassette, so that the cassette is securely held in place.

[0013] When taking out the cassette, the operation is reverse to that described above. That is, by the eject operation, the holder 1 moves the cassette from the second position to the first cassette removal position. By moving holder 1, slide 10
The tip 10a of the bent piece 14 extends from the flat part 14c to the inclined part 1.
4b, and reaches the stepped portion 14a, but when it reaches the inclined portion 14b, the slide 10 starts to gradually descend against the spring 7, and reaches the stepped portion 14.
When reaching point a, the pins 11, 11 are completely removed from the positioning holes of the cassette, and the cassette can be taken out smoothly.

[0014]

As described above, according to the structure of the present invention, even if the cassette is inserted into the holder with a slight incline when the cassette is installed, the positioning pin of the slide can correct the posture of the cassette and position the cassette. Since the cassette can be moved to a predetermined position by penetrating the hole and holding the cassette in its normal position, it is possible to provide a front-loading type cassette mounting device with extremely high reliability and good operability.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is an exploded perspective view of a conventional example.

[Explanation of symbols]

1 Holder 4 Side plate 7 Coil spring 9 Cassette positioning means 10 Slide 11 Positioning pin 14. Regulating means (bending piece)

Claims (2)

[Claims] 1. A cassette loading device comprising a holder that moves between a first position for loading and unloading a cassette and a second position for pulling out a tape from the cassette, wherein the holder is always biased upwardly by a spring. The cassette positioning means is movably provided, and a regulating means for regulating the downward movement of the cassette positioning means in conjunction with movement of the holder is provided on a side plate provided with a guide groove for guiding the holder. cassette loading device. 2. The cassette mounting device according to claim 1, wherein said cassette positioning means is provided with a pair of positioning pins that penetrate into positioning holes of said cassette.