JP2541081Y2 - Magnetic recording / reproducing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus for recording information on a magnetic tape recording medium, and more particularly to a DAT.
The present invention relates to a structure of a magnetic recording / reproducing apparatus suitable for a (digital audio tape) system.

[0002]

2. Description of the Related Art As is well known, in a DAT tape cassette, after a slider for closing a reel hub hole is set to a release position, a closed lid must be opened and a tape in the tape cassette must be pulled out to a position of a magnetic head. .

FIGS. 6 to 9 show a conventional magnetic recording / reproducing apparatus used for the above-described DAT tape cassette. A return force is applied to the tape cassette X by return springs 2A and 2B applied between the tape cassette X and the chassis 1. It is manually inserted into the cassette holder 3. The cassette holder 3 moves the slider x1 of the tape cassette X to the release position to expose a reel hub hole (not shown) of the tape cassette X to the outside.
a, and can be moved in the tape cassette X insertion direction along the lift cam plate 4 mounted on the chassis 1 so that the tape cassette X can be moved in the tape cassette X insertion direction by a position control cam (not shown).

As shown in FIG. 9, locking members 6A, 5A for detecting the inserted tape cassette X and releasing the lock of the cassette holder 3 are attached to mounting pins 5A, 5B on the left and right outer surfaces of the cassette holder 3. 6B and lid x
Lid openers 7A and 7B for releasing the tape T in the tape cassette X to the outside by releasing the lock member 6 are provided, and these lock members 6A and 6B and the lid openers 7A and 7B are provided.
The right and left mounting brackets 8A and 8B fixed to the left and right side walls 1A and 1B of the chassis 1 correspond to the holder stoppers 9A and 9B which can be engaged with the locking claws 6a of the corresponding locking members 6A and 6B, and the corresponding lid opener 7A. Cams 10A and 10B with which the driven pins 7a of the
Are fixed respectively. Therefore, the cassette holder 3
7, the tape cassette X is detected by the lock members 6A and 6B, and the lock claws 6a of the lock members 6A and 6B are disengaged from the holder stoppers 9A and 9B, as shown in FIG. The constraint of the holder 3 is released. Thereafter, when the slider x1 of the tape cassette X is sufficiently released by the engaging claw 3a of the cassette holder 3 with the subsequent insertion of the tape cassette X, the cassette holder 3 is moved to the position shown in FIG. Moved to the right. As a result, both lid openers 7A, 7B
The driven pin 7a is simultaneously driven by the lid cams 10A and 10B, and as shown in FIG.
7B are simultaneously acted on the left and right sides of the lid x2 of the tape cassette X, and these lid openers 7A,
The lid x2 is opened by 7B, and the tape T in the tape cassette X is exposed to the outside.

A sub-chassis 11 which is moved up and down by the above-described lift cam plate 4 is attached to a lower portion of the chassis 1, and a tape cassette X having a lid x2 opened at a rear portion of the sub-chassis 11. A positioning pin 12 for preventing movement, a tape swing rod 13 and a pinch roller 14 are mounted. Therefore, lid x2
When the lift cam plate 4 is operated by the position control cam after the opening of the sub-chassis 11, the sub-chassis 11 is raised to the position shown in FIG.
Is raised inside the tape cassette X.

On the other hand, below the sub-chassis 11,
A motor mounting board 15 and a left and right moving cam plate 16 are mounted on the motor mounting board 15.
A reel hub motor 17 having a 7a is mounted. Therefore, when the left / right moving cam plate 16 is operated by the position control cam, the tape T
Is pulled out from the inside of the tape cassette X, and the pinch roller 14 is moved toward a capstan (not shown).

[0007]

In the above-described conventional magnetic recording / reproducing apparatus, the lid x2 of the tape cassette X is opened by the operation of the left and right lid openers 7A and 7B provided on the cassette holder 3. Thereafter, the tape T is pulled out from the inside of the tape cassette X by the tape swing-out rod 13, but when the tape cassette X is forcibly inserted into the cassette holder 3 in a state of being tilted right and left, the lid openers 7A and 7B. Operates, the lid x2 of the tape cassette X remains closed,
It may be advanced in the direction of the pinch roller 14 or the tape swing-out rod 13. That is, when the tape cassette X is inserted while being inclined left and right, the engagement end 7b of the lid openers 7A and 7B cannot be engaged with the lower edge of the lid x2, and even if both the lid openers 7A and 7B operate. Then, the tape cassette X moves forward with the lid x2 closed. Therefore, when such a situation occurs, the lid detector 18
As a result, the open state of the lid x2 is not detected, resulting in an operation error and giving the user anxiety. SUMMARY OF THE INVENTION An object of the present invention is to provide a structure in which an operation error does not occur even if a tape cassette is erroneously inserted left and right in consideration of the above-described problems of the conventional magnetic recording and reproducing apparatus.

[0008]

According to the present invention, a cassette holder having an engaging claw for moving a slider of a tape cassette to a release position is moved in a tape cassette insertion direction with respect to a chassis. Mounting,
In a magnetic recording / reproducing apparatus in which a pair of lid cams and a lid opener for releasing the lid of the tape cassette after the tape cassette is completely inserted into the cassette holder are provided between the left and right sides of the chassis and the corresponding portions of the cassette holder, The present invention proposes a magnetic recording / reproducing apparatus in which the lid cam and the lid opener are different in shape from each other to give a phase difference to the lid opening timing of the left and right lid openers.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS. In FIGS. 1 to 5, the same structural parts as those in FIGS. 6 to 9 described above are denoted by the same reference numerals, and duplicate description will be omitted.

1 to 5 show a magnetic recording / reproducing apparatus according to the present invention used for a DAT tape cassette. A tape cassette X is provided with a return force by return springs 2A and 2B applied to a chassis 1. It is manually inserted into the holder 3. This cassette holder 3 engages with a notch x3 of a lid x2 that moves a slider x1 of the tape cassette X to a release position to expose a reel hub hole (not shown) of the tape cassette X to the outside.
It can be moved in the tape cassette X insertion direction along the lift cam plate 4 mounted on the chassis 1 so that the tape cassette X can be moved in the tape cassette X insertion direction by a position control cam (not shown).

As shown in FIG. 2, locking members 6L, 5R for detecting the inserted tape cassette X and releasing the lock of the cassette holder 3 are attached to the mounting pins 5L, 5R on the left and right outer surfaces of the cassette holder 3. 6R and lid x
The lid openers 7L, 7R for releasing the tape T in the tape cassette X to the outside by releasing the lock members 6L, 6R and the lid openers 7L, 7R are provided.
The left and right mounting brackets 8L and 8R fixed to the left and right side walls 1L and 1R of the chassis 1 correspond to the holder stoppers 9L and 9R that can be engaged with the lock claws 6a of the corresponding lock members 6L and 6R, and the corresponding lid opener 7L. Cams 10L, 10R with which the driven pins 7a of the
Are fixed respectively. Therefore, the cassette holder 3
4, the tape cassette X is sensed by the lock members 6L and 6R, and the lock claws 6a of the lock members 6L and 6R are disengaged from the holder stoppers 9L and 9R, as shown in FIG. The constraint of the holder 3 is released.

The illustrated embodiment is characterized by a lid opener 7.
Left and right lid cams 10L, 10R driven by L, 7R
It is in. That is, as understood from FIG. 1, the length L1 of the left lid cam 10L in the tape cassette X insertion direction is the corresponding length L2 of the right lid cam 10R.
And the cassette holder 3
In a later stage of the forward movement of the left side, the driven pin 7a of the corresponding lid opener 7L on the left is driven by the same lid cam 10L. Of course, in the present invention, in order to give an operational phase difference between the left and right lid openers 7L and 7R, the lid cams 10L and 10R are formed in the same shape, and the structures of the lid openers 7L and 7R are made different from each other. You can also get a purpose.

A sub-chassis 11 which is moved up and down by the above-mentioned lift cam plate 4 is attached to a lower portion of the chassis 1, and a tape cassette X having a lid x2 opened at a rear portion of the sub-chassis 11. A positioning pin 12 for preventing movement, a tape swing rod 13 and a pinch roller 14 are mounted. Therefore, lid x2
When the lift cam plate 4 is operated by the position control cam after the opening of the sub-chassis 11, the sub-chassis 11 is raised to the position shown in FIG.
Is raised inside the tape cassette X.

On the other hand, below the sub-chassis 11,
A motor mounting board 15 and a left and right moving cam plate 16 are mounted on the motor mounting board 15.
A reel hub motor 17 having a 7a is mounted. Therefore, when the left / right moving cam plate 16 is operated by the position control cam, the tape T
Is pulled out of the tape cassette X, and the pinch roller 14 is moved toward the capstan 19 shown in FIG.

Since the magnetic recording / reproducing apparatus according to the illustrated embodiment has the above-described structure, it operates as follows. When the tape cassette X is inserted into the cassette holder 3, as shown in FIG. 4, the tape cassette X is detected by the lock members 6L and 6R, and the lock claws 6a of the lock members 6L and 6R are moved from the holder stoppers 9L and 9R. The cassette holder 3 is released, and the constraint of the cassette holder 3 is released.

Thereafter, with the subsequent insertion of the tape cassette X, the driven pin 7a of the right lid opener 7R is immediately driven by the corresponding lid cam 10R, and the engaging claw 3a of the cassette holder 3 causes the slider x of the tape cassette X to move.
Until the opening 4 is sufficiently opened, the cassette holder 3 is moved rightward in FIG. 7 by the operation of the position control cam. In this case, the driven pin 7a of the right lid opener 7R is driven by the lid cam 10R, and as shown in FIG. 4, the lid x2 of the tape cassette X is opened by the engagement end 7b of the right lid opener 7R. Immediately before opening the slider x4 of the tape cassette X, the lid cam 10L
End 7b of left lid opener 7L driven by
However, as shown in FIG. 5, since the operation is performed with a phase difference, the lid x of the tape cassette X is reliably opened even if the opening by the right lid opener 7R is missed. For this reason, the frequency at which the lid detector 18 detects a mistake in the open state of the lid x2 is reduced, and the user is less likely to feel uneasy.

[0017]

As is apparent from the above description, according to the present invention, the frequency of operation errors due to the forcible insertion of the tape cassette can be reduced, so that a highly reliable magnetic recording / reproducing apparatus can be obtained. it can.

[Brief description of the drawings]

FIG. 1 is a plan view of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is an enlarged exploded perspective view of a main part of the magnetic recording / reproducing apparatus.

FIG. 3 is a sectional view of the magnetic recording and reproducing apparatus before a tape cassette is inserted.

FIG. 4 is a sectional view of the magnetic recording / reproducing apparatus in a state where a lid of a tape cassette is opened.

FIG. 5 is a cross-sectional view of the magnetic recording / reproducing apparatus in a state where the sub-chassis is raised.

FIG. 6 is a sectional view of a conventional magnetic recording / reproducing apparatus before a tape cassette is inserted.

FIG. 7 is a sectional view of the magnetic recording / reproducing apparatus in a state where a lid of the tape cassette is opened.

FIG. 8 is a cross-sectional view of the magnetic recording / reproducing apparatus with the sub-chassis raised.

FIG. 9 is an enlarged exploded perspective view of a main part of the magnetic recording / reproducing apparatus.

[Explanation of symbols]

 X Tape cassette x1 Slider x2 Lid 1 Chassis 3 Cassette holder 7L, 7R Lid opener 10L, 10R Lid cam

Claims (1)

(57) [Scope of request for utility model registration] A cassette holder having an engagement claw for moving a slider of the tape cassette to a release position, the cassette holder being movably attached to a chassis in a tape cassette insertion direction;
In a magnetic recording / reproducing apparatus in which a pair of lid cams and a lid opener for releasing the lid of the tape cassette after the tape cassette is completely inserted into the cassette holder are provided between the left and right sides of the chassis and the corresponding portions of the cassette holder, A magnetic recording / reproducing apparatus, wherein the lid cam and the lid opener have different shapes to give a phase difference to the lid opening times of the left and right lid openers.