JP2583240Y2 - 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 8 show a conventional magnetic recording / reproducing apparatus used for the above-mentioned DAT tape cassette. The tape cassette X is provided with a return force 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).

On the left and right outer surfaces of the cassette holder 3, there are provided a lock member 6 for detecting the inserted tape cassette X and releasing the lock of the cassette holder 3, and a tape in the tape cassette X with the lid x2 released. A lid opener 7 for exposing T to the outside is attached, and the locking member 6 and the left and right mounting brackets 8 fixed to the left and right side walls 1a of the chassis 1 corresponding to the lid opener 7 can be engaged with the corresponding locking member 6. A lid cam 10 with which the holder stopper 9 and the corresponding lid opener 7 can come into contact is fixed. Therefore, when the tape cassette X is inserted into the cassette holder 3, as shown in FIG.
The tape cassette X is sensed by the lock member 6, the lock member 6 is disengaged from the holder stopper 9, and the restriction of the cassette holder 3 is released. Thereafter, when the slider x1 of the tape cassette X is sufficiently released by the engaging claws 3a of the cassette holder 3 with the subsequent insertion of the tape cassette X, the cassette holder 3 is moved by the operation of the position control cam as shown in FIG.
Is moved to the right. As a result, both lid openers 7
Are simultaneously driven by the lid cam 10, and as shown in FIG. 8, both lid openers 7 are simultaneously acted on the left and right of the lid x2 of the tape cassette X, and these lid openers 7
As a result, the lid x2 is opened, 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 constituting a tape path are mounted. Therefore, when the lift cam plate 4 is operated by the position control cam after the lid x2 is opened, the sub-chassis 11 moves up to the position shown in FIG.
And the pinch roller 14 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, although not shown, when the left and 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 by the tape oscillating rod 13, and the pinch roller 14 is not shown. Will be moved toward.

[0007]

In the conventional magnetic recording / reproducing apparatus as described above, 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 swinging rod 13, but if the tape cassette X is forcibly inserted into the cassette holder 3 in a state of being tilted left and right, the lid of the tape cassette X While the x2 is closed, the pinch roller 14 and the tape swing-out rod 1
It may be advanced in three directions. When such a situation occurs, the lid x2 of the tape cassette X comes into contact with the pinch roller 14 and the tape swing-out rod 13 slightly protruding above the chassis 1 as shown by phantom lines in FIG. The roller 14 and the tape swing-out rod 13 may be deformed or damaged, and the reliability of the magnetic recording / reproducing apparatus may become a problem. In view of the above-mentioned problems of the conventional magnetic recording / reproducing apparatus, even if a tape cassette is erroneously inserted to be inclined left and right, the pinch roller and the tape swing rod constituting the tape path are deformed. To obtain a structure that is not damaged or damaged.

[0008]

Means for Solving the Problems] To achieve this object, the present invention is a cassette holder having engaging pawl to move the slider of the tape cassette in the open position, horizontal in the direction of insertion of the tape cassette relative to the chassis Said to be movable
Installed on the top side of the chassis, front on the bottom side of the chassis
It is mounted so that it can move up and down in the
A magnetic recording / reproducing apparatus in which a tape path component is disposed on a sub-chassis, wherein at least one block member having a height which does not hinder the opening / closing movement of the lid of the tape cassette and can contact the surface of the lid in a closed state. Before
In the magnetic recording / reproducing apparatus protruding from the upper surface side of the chassis .

[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 8 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. The tape cassette X is provided with a return force by return springs 2L and 2R applied between the tape cassette X and 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.

A sub-chassis 11 which is moved up and down by the above-described lift cam plate 4 is assembled 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. Positioning pins 12 for preventing movement, tape path components, ie, tape oscillating rod 13, pinch roller 14, tape guide shafts 17L, 17R, tape guide rollers 18L, 18
R is mounted. Therefore, when the lift cam plate 4 is operated by the position control cam after the lid x2 is opened, the sub-chassis 11 is raised to the position shown in FIG. 5, and the tape swing rod 13, the pinch roller 14, the tape guide shaft 17L, 17R, tape guide roller 18L, 1
8R will be raised inside the tape cassette X.

On the other hand, in the lower part of 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, the pinch roller 14 is moved toward the capstan 19 shown in FIG. 2, and the tape guide shafts 17L, 17R and the tape guide rollers 18L, 18R are moved to the magnetic drum 2 shown in FIG.
It will be moved towards zero.

In the illustrated embodiment, the lid x2
Cassette X that has been advanced with the door closed
Block pins 20L and 20R for preventing the forward movement of
Is provided on the rear surface of the chassis 1. These block pins 20L and 20R are provided on the surface of the chassis 1 that does not correspond to the notch x3 of the lid x2, and FIG.
As shown in the figure, the tape path components provided on the sub-chassis 11, namely, the tape swinging rod 13, the pinch roller 1
4. The tape guide shafts 17L and 17R and the tape guide rollers 18L and 18R are located in front of the tape cassette X in the insertion direction. In addition, these block pins 2
As shown in FIG. 4, the height H of 0L, 20R does not hinder the opening and closing movement of the lid x2, and the tape cassette X held in the cassette holder 3 has advanced abnormally with the lid x2 closed. Sometimes, the dimensions are such that they can contact the surface of the lid x2.

Since the magnetic recording / reproducing apparatus according to the illustrated embodiment has the above-described structure, the tape cassette X can be moved in the direction of the tape path component without opening the lid x2 by an operation such as forcible insertion by hand. As they move forward, these tape path components are not deformed or damaged.

That is, when such a situation occurs, the lid x2 is made up of the tape path components, that is, the tape swing rod 13, the pinch roller 14, the tape guide shaft 17L,
Before contact with the tape guide rollers 18L and 18R, the lid x2 is inserted into the block pins 20L and 20R.
Upon contact with R 1, further forward movement of the tape cassette X is prevented. Therefore, damage and deformation of the tape swinging rod 13, the pinch roller 14, the tape guide shafts 17L and 17R, and the tape guide rollers 18L and 18R, which require strictness in positional accuracy and assembly state, are prevented.

In the embodiment described above, the two block pins 20L and 20L projecting from the surface of the chassis 1 are used.
0R, the block pins 20L, 2
The number of 0R is arbitrary, and the number of the block pins 20L, 20R is the same.
R 1 may be a block projection obtained by folding a part of the chassis 1.

[0018]

As is apparent from the above description, in the present invention, a simple block member projecting on the surface of the chassis can reliably prevent delicate deformation or damage of the tape path components. , A highly reliable magnetic recording / reproducing apparatus that does not cause a functional failure even if the device is somewhat roughly handled.

[Brief description of the drawings]

FIG. 1 is an enlarged exploded perspective view of a main part of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is a plan view 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.

[Explanation of symbols]

X Tape cassette x1 Slider x2 Lid 1 Chassis 3 Cassette holder 7L, 7R Lid opener 10L, 10R Lid cam 13 Tape swing rod (Tape path component) 14 Pinch roller (Tape path component) 17L, 17R Tape guide shaft (Tape path configuration) Parts) 18L, 18R Tape guide roller (tape path component) 20L, 20R Block pin (block member)

Claims (1)

(57) [Scope of request for utility model registration] 1. A cassette holder with engaging pawl to move the slider of the tape cassette in the open position, horizontally movably above the insertion direction of the tape cassette relative to the chassis
Installed on the top side of the chassis, front on the bottom side of the chassis
It is mounted so that it can move up and down in the
A magnetic recording / reproducing apparatus in which a tape path component is disposed on a sub-chassis, wherein at least one block member having a height which does not hinder the opening / closing movement of the lid of the tape cassette and can contact the surface of the lid in a closed state. Before
A magnetic recording / reproducing device characterized in that the magnetic recording / reproducing device protrudes from the upper surface of the chassis .