JPH0430690Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a loading mechanism for a magnetic recording/reproducing apparatus, and particularly to a mechanism for stabilizing the mounting state of a cassette.

(Prior art and problems) When installing a cassette in a magnetic recording/reproducing device,
When the cassette is pushed into a predetermined position, an ejection member such as an arm comes into contact with the tip of the cassette in the insertion direction, and even when the loading motor for loading the cassette to the playback position is driven, the ejection member acts to push the cassette back. . This causes a misalignment in the mounting position of the cassette, leading to inaccurate recording and playback.

(Means for solving the problem) The present invention was devised to solve the above problem, and it has a substantially box shape, and a box is provided on the top surface of the box, slanting from the sides toward the center. A chassis having a sloped side and an engaging side formed continuously on the rear side of the sloped side, a sliding member disposed inside the chassis and slidable in the front and back direction of the chassis, and a recording medium built therein. a cassette holder to which a cassette is attached, which is locked in a slide member and is movable in the longitudinal direction of the chassis in conjunction with the slide member; a discharge arm rotatably attached to the top surface of the slide member; The ejection arm is arranged so that one end of the arm faces the tip of the cassette in the insertion direction and presses the cassette in the ejection direction, and the other end of the ejection arm abuts the inclined side or the engagement side of the chassis. When inserting the cassette into the cassette holder,
One end of the ejection arm contacts the tip of the cassette in the insertion direction, and the ejection arm rotates against the biasing force of the spring member due to the insertion force of the cassette, and the cassette is inserted a predetermined amount and the ejection arm is moved a predetermined amount. After rotation, the slide member slides through the cassette holder due to the insertion force of the cassette, and as the slide member moves, the other end of the ejection arm moves along the inclined side until it engages with the engagement side. By doing so, the ejection arm is further rotated, and one end of the ejection arm is separated from the leading end in the insertion direction of the cassette.

This makes it possible to achieve stable cassette loading.

(Example) The cassette loading mechanism of the present invention will be explained in detail below based on the drawings.

Figure 1 is a perspective view of the cassette loading mechanism;
Fig. 2 is a plan view with the cassette pushed in, Fig. 3 is a left side view of the same, Fig. 4 is an explanatory front view of the same, Fig. 5 is a perspective view of the cassette holder, and Fig. 6 is a view with the cassette installed. FIG. 7 is an explanatory plan view of the cassette loading mechanism showing a state in which the cassette is installed in a predetermined position; FIG.
The figure is a perspective view showing a state in which the front cover of the cassette is opened.

The main components of the cassette loading mechanism are a cassette holder 1 into which a cassette 2 containing a magnetic tape (not shown) is inserted and loaded to a predetermined position, a chassis 3 serving as an exterior body, and the cassette holder 1 and the chassis 3. and a slide plate 4 disposed between.

The cassette holder 1 has a substantially U-shaped cross section as shown in the perspective view of FIG.
1a is provided. Further, a guide plate 1b is attached to the upper surface, which serves as a cassette guide. Presser springs 1c, 1c for positioning the cassette 2 on the bottom side and center side of the cassette holder 1 are formed at both ends of the guide plate 1b. Furthermore, a pair of pins 1d, 1d, . . . , which are slidably inserted into a through hole of the chassis 3 and an inclined groove of the slide plate 4, which will be described later, are provided at the front and rear ends of both sides.

The chassis 3 has a substantially square-shaped cross section, and the pins 1d and 1d of the cassette holder 1 are attached to both sides of the chassis 3.
Through-holes 3a, 3a, . . . are bored through which . Further, arcuate inclined sides 3b, 3b are formed on both sides of the substantially center, and these inclined sides 3
Engagement sides 3c, 3c are formed to be continuous with b, 3b and substantially parallel to the moving direction of the cassette holder 1.

On the other hand, the slide plate 4 has a substantially U-shaped cross section, and has pins 1d and 1 of the cassette holder 1 on both sides thereof.
Slanted grooves 4a, 4a, .

Further, on the upper surface of the slide plate 4, arms 5 and 6 for discharging cassettes formed in a substantially dogleg shape are rotatably supported, and one end of the arms 5 and 6 has roller pins 5a and 6a and The engagement pin 5 is attached to the protrusion of the
b and 6b are provided, respectively. The arms 5 and 6 are moved in a predetermined direction (in a second
In the figure, arm 5 is biased clockwise, arm 6 is biased counterclockwise), and engaging pins 5b, 6b are biased.
For example, by coming into contact with the side surface of the chassis 3, its rotation is restricted. In this state, as shown in FIG. 2, the engagement pins 5b, 6b are locked to the front ends of the inclined sides 3b, 3b of the chassis 3, and the one end side where the roller pins 5a, 6a are provided is The position is inclined and opposed to the direction in which the cassette 2 is inserted.

The pins 1d, 1d provided on both sides of the cassette holder 1 are inserted into the inclined grooves 4a, 4 of the slide plate 4.
a and the round-shaped through holes 3a, 3a... on the side of the chassis 3.
are arranged through each. Further, the slide plate 4 is configured to be slidable in long slide grooves 3d, 3d provided on the upper surface of the chassis 3 via screws 3e, 3e.

Next, the operation of attaching and loading the cassette 2 to the cassette holder 1 will be explained.

As shown in Figure 2, when cassette 2 is inserted into cassette holder 1 and pushed in the direction of the arrow, cassette 2 will open.
The front cover 2a at the tip in the insertion direction presses the roller pins 5a, 6a against the urging force of the springs 7, 7, and the arms 5, 6 begin to rotate. At this point, arm 5,
The engagement pins 5b and 6b of 6 are connected to the inclined side 3 of the chassis 3.
Since the slide plate 4 and the cassette holder 1 are locked to the front ends of the slide plates 4 and 3b, the slide plate 4 and the cassette holder 1 do not slide. When the cassette 2 is further pushed in, the arms 5 and 6 rotate, and the engagement pins 5b and 6b at the other ends of the arms 5 and 6 move along the inclined sides 3b and 3b from the front end of the inclined sides 3b and 3b. It then begins to rotate inward. Therefore, the engagement pins 5b, 6b are released from the front ends of the inclined sides 3b, 3b, and the slide plate 4 begins to slide through the cassette holder 1 due to the pressing force of the cassette 2. Slide plate 4
6, the engaging pins 5b, 6b further rotate inward along the inclined sides 3b, 3b of the chassis 3, and slide onto the engaging sides 3c, 3c as shown in FIG. while engaging. And engagement pins 5b, 6b
The arms 5, 6 continue to rotate while the roller pins 5a, 6a move away from the front cover 2a of the cassette 2, and the cassette 2 moves from the inclined sides 3b, 3b to the engaging sides 3c, 3c. It is beginning to free itself from biasing forces.

On the other hand, when the cassette holder 1 begins to slide due to the pressing force of the cassette 2, the switch 9, which had been turned off by the pin 1d, is turned off as shown in FIG.
is turned on, and the loading motor 10 provided at the bottom of the chassis 3 is driven. The driving force of this loading motor 10 is transmitted via a reduction gear 11 to a rack 12 provided at the bottom of the slide plate 4, and the slide plate 4 itself moves inward of the chassis 3. As shown in the plan view of FIG.
Vertical grooves of ... and inclined grooves 4a, 4a of slide plate 4
Slide down and the cassette holder 1
The switch 13 provided on the side surface of the chassis 3 is turned off by the pin 1d, and the driving of the loading motor 10 is stopped. The front cover 2a of the cassette 2 that has descended together with the cassette holder 1 is opened by the door opener 14 provided at the bottom of the chassis 3 as shown in FIG. The loading operation is then completed.

When ejecting the cassette 2, an operation opposite to the above-mentioned loading operation is performed, and the cassette 2 is finally pushed out of the chassis 3 by the arms 5 and 6 urged by the bars 7 and 7. It's getting old.

When the cassette 2 is inserted and pushed into the cassette holder 1 as described above, the roller pins 5a and 6a are pressed by the leading end of the cassette 2 in the insertion direction, and the slide plate 4 moves to move the arms 5 and 6. The engagement pins 5b, 6b are connected to the inclined sides 3b, 3b of the chassis 3.
Since the arms 5 and 6 are rotated by engaging with the engaging sides 3c and 3c, the roller pins 5a and 6a of the arms 5 and 6, which are ejecting members, move toward the ends of the cassette 2 in the insertion direction during loading of the cassette 2. Becomes to move away from. Therefore, the pressure of the arms 5 and 6 on the cassette 2 is released, and the cassette 2 itself is securely held within the cassette holder 1, so that loading with stable accuracy is performed. Furthermore, even if the cassette 2 has a front lid 2a on the front surface, the front lid 2a can be opened smoothly without being hindered.

(Effects) As explained above, according to the present invention, when a cassette is inserted into a cassette holder, one end of the ejection arm comes into contact with the tip of the cassette in the insertion direction, and the spring member is activated by the insertion force of the cassette. The ejection arm rotates against the biasing force, and after the cassette is inserted a predetermined amount and the ejection arm rotates a predetermined amount, the slide member slides through the cassette holder due to the insertion force of the cassette, and the slide member As the other end of the ejection arm moves along the inclined side until it engages with the engaging side, the ejection arm further rotates and one end of the ejection arm moves away from the tip in the insertion direction of the cassette. Since the cassette is separated from the cassette, when the cassette is inserted into the cassette holder and loaded to a predetermined position, the pushing force in the cassette ejection direction by the ejection arm can be kept from acting on the cassette, and the magnetic field inside the cassette can be This enables reliable recording and playback without causing the tape to be misaligned with respect to, for example, a magnetic head.

Further, since the ejection arm does not come into contact with the tip of the cassette in the insertion direction, even if the cassette has a front lid on the front surface, the opening operation of the front lid can be smoothly performed without being hindered.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a cassette loading mechanism showing an embodiment of the present invention, Fig. 2 is a plan view of the same with the cassette pushed in, Fig. 3 is a left side view of the same, and Fig. 4 is a front view of the same. FIG. 5 is a perspective view of the cassette holder, FIG. 6 is a plan view of the cassette loading mechanism with the cassette inserted, and FIG. 7 shows the cassette loaded in a predetermined position. FIG. 8 is a perspective view showing a state in which the front cover of the cassette is opened. 1...Cassette holder, 2...Cassette, 3...
... Chassis, 3b... Inclined side, 3c... Engagement side,
4...Slide plate, 5, 6...Arm, 7...Spring.

Claims (1)

[Scope of utility model registration request] A chassis that is approximately box-shaped and has an inclined side that is inclined from the side toward the center on the upper surface thereof, and an engagement side that is continuously formed on the rear side of the inclined side; A slide member that is disposed inside and can freely slide in the front-rear direction of the chassis and a cassette containing a recording medium are attached, and are locked in the slide member and move in the front-rear direction of the chassis in conjunction with the slide member. a movable cassette holder, an ejection arm rotatably attached to the upper surface of the slide member, one end of the ejection arm facing the tip of the cassette in the insertion direction, and the one end pressing the cassette in the ejection direction. and a spring member that biases the ejection arm so that the other end side of the ejection arm comes into contact with the inclined side or the engagement side of the chassis, and when the cassette is inserted into the cassette holder, One end of the ejection arm comes into contact with the tip of the cassette in the insertion direction, and the ejection arm rotates against the biasing force of the spring member due to the insertion force of the cassette, and the cassette is inserted a predetermined amount and the cassette is ejected. After the arm has rotated a predetermined amount, the slide member slides through the cassette holder due to the insertion force of the cassette, and as the slide member moves, the other end of the ejection arm moves along the inclined side. A cassette drawer for a magnetic recording and reproducing device, characterized in that by moving the ejecting arm until it engages with the engaging side, the ejecting arm further rotates and one end of the ejecting arm separates from the leading end in the insertion direction of the cassette. Deing mechanism.