JPH0283847A - Cassette loading device - Google Patents

Abstract

PURPOSE:To enlarge the protruding quantity of a tape cassette at the time of discharging by holding a cassette holder and further, freely moving the cassette holder in the discharging direction after a sliding member to provide a groove to guide the driving pin of the cassette holder is stopped. CONSTITUTION:A sliding member 25 to pressurize and hold a cassette holder 14 through a block 28 is moved with a driving member provided at the main body of a cassette loading device in the discharging direction, abutted to the stopper of the main body and stopped. Driving pins 17A and 17B of the holder 14 are guided to slots 29 and 29B of the guiding groove of the member 25, after the member 25 is stopped, further, the holder 14 is moved in the discharging direction, the protruding quantity of the tape cassette at the time of discharging becomes larger and the taking-out of the discharged tape cassette can be easily and surely executed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cassette loading device suitable for use in, for example, a so-called front-loading type video tape recorder (VTR).

[Summary of the invention]

The present invention is applicable to, for example, a so-called front loading type V
Regarding a cassette loading device suitable for use in TR, it includes a cassette holder having a drive pin and holding the tape cassette in the ejection direction, and a groove for guiding the drive pin along the ejection direction and holding the tape cassette in the ejection direction. a slide member that is held so as to be biased in a direction that intersects with the direction; a drive member that biases the drive pin in the ejection direction;
The cassette holder is provided with a stopper that restricts the movement of the slide member in the ejection direction, and after the slide member has stopped, the cassette holder can be further displaced in the ejection direction, making it simple and inexpensive. When the tape cassette is ejected from the device, the amount of protrusion of the cassette is increased so that the cassette can be easily taken out.

C. Prior Art] For example, in a recording and reproducing device such as a VTR that uses a tape cassette containing magnetic tape, there is an eject position where the tape cassette is loaded and unloaded, and a loading completion position where the tape cassette is inserted into the recording and reproducing section. A cassette loading device is provided with a means for moving the cassette to and from the positions.

There have been various types of such cassette loading devices, but a front-loading type cassette loading device as shown in FIG. 8 is relatively commonly used because of its ease of use. In Figure 8, (
1) is a cassette loading device, (2) is a tape cassette fixed to the fPF at the loading completion position, and the front lid (3) of this tape cassette (2) is opened and the magnetic tape (4) is pulled out. . Further, (5) is a lid lock member that controls opening of the front lid (3), and (6) is a finger rest. The supply reel and take-up reel of the tape cassette (21) are driven by drive motors (7A) and (7A), respectively.
B) is inserted, and the magnetic tape (4) is inserted into the recording/reproducing head (
9) l: Arranged so as to make sliding contact.

The tape cassette (2) is manually pushed into the cassette loading port (9) from the WPH, and then transferred to the intermediate position PM by the moving means to the loading completion position P.
It was automatically transported to F. A conventional moving means has a bottom plate (10) and a top plate (10), as shown in FIG. 9, for example.
11) and a driving means (not shown) for conveying the holding means along a route. The bottom plate (10) and top plate (11) are connected by a tension coil spring (12), and when the tape cassette (2) is pushed through the loading port (9) and placed on the bottom plate (10), , the upper plate (11) is the tape cassette (
2) is biased and held against the bottom plate (10).

[Problem to be solved by the invention]

However, such conventional cassette loading devices automatically load the tape cassette (2) for cassette ejection.
) is ejected to the eject position PR, the protrusion fPo, which is the length from the cassette loading port (9) to the rear end of the tape cassette (2), is small, and the tape cassette is manually ejected from the eject position PE. (2) There was an inconvenience that it was difficult to take it out.

In particular, in a cassette loading device of a recording/playback device that uses a small tape cassette, such as a camera-integrated video tape recorder, the protrusion amount Po is 8+u.
Since the finger hook (6) remains partially hidden in the cassette loading slot (9), the eject position P
It was extremely difficult to remove the tape cassette (2) from E.

For this reason, the width of the bottom plate (10) is narrowed in front of the tape cassette (2)! A mechanism that holds the (3) side is also conceivable.However, in order to stably hold the tape cassette, place the tape cassette on a bottom plate with a certain width, and then adjust the center of gravity of the tape cassette. It is not preferable to hold only the front cover side of the tape cassette.

Furthermore, as a device that can increase the amount of protrusion of the tape cassette when ejecting the tape cassette while holding the center of gravity of the tape cassette, Japanese Patent Laid-Open No. 63-42061 discloses a device equipped with a rubber roller (13) as shown in FIG. 10. A device has been proposed. In the conventional example shown in FIG. 10, when ejecting a cassette, the biasing force of the upper plate (11) is weakened and the rubber roller (13) is rotated in the θ direction, thereby moving the tape cassette (2) in the ejection direction (X direction). ) to make it stand out. However, the device using the rubber roller (13) requires a rotation means for rotating the rubber roller (13) in addition to a drive means for driving the bottom plate (10) along the path, making the mechanism complicated. However, the manufacturing cost is high.

In view of the above, an object of the present invention is to propose a cassette loading device that has a simple configuration and can increase the amount of protrusion of a tape cassette when the cassette is ejected.

[Means to solve the problem]

The cassette loading device according to the present invention includes, for example, a first
As shown in the figure, the cassette holder (14) has a drive pin (17A) and holds the tape cartridge in the ejection direction (X direction).
) and a groove (29A) that guides the drive pin (17^) along the ejection direction, and a slide member that holds the tape cassette so as to bias it in a direction (Y direction) that intersects with the ejection direction. (25) and its drive pin (17A)
A drive member (46) that urges the slide member (25) in the ejection direction, and stoppers (59) and (60) that restrict the movement of the slide member (25) in the ejection direction, and the slide member (25) stops. After that, remove the cassette holder (
14) can be further displaced in the discharge direction.

[Effect]

According to the present invention, the tape cassette is stably held by the cassette holder (14) and the slide member (25) during recording and reproduction. When the cassette is ejected, the slide member (25) moves to the stopper (5).
9), after stopping by (60), further move the drive pin (17A) of the cassette holder (14) along the groove (29A) of the slide member (25) to move the cassette holder (14) in the ejection direction. , the tape cassette is moved in the ejection direction. Therefore, the tape cassette can be easily removed manually.

Moreover, the cassette holder (14) and the slide member (25) are connected to the drive pin (17A) and the drive member (4).
6). Therefore, the tape cassette can be ejected with an extremely simple structure.

〔Example〕

Hereinafter, one embodiment of the cassette loading device of the present invention will be described with reference to FIGS. 1 to 7.

1 and 2 show a front-loading type cassette loading device incorporated in, for example, a camera-integrated VTR of this example, disassembled into its respective component parts. is a tape cassette (
2) in the ejection direction (X direction), and this cassette holder (14) has resin side walls (16) on both sides of a box-shaped frame (15) made of sheet metal.
A) and (16B) are installed and configured. On the side wall (16A) is a long cylindrical drive pin made of hard resin (
17A) and a short cylindrical guide pin (18A), (
19^), and a drive pin (17B), guide pins (18A), and (19B) are respectively planted in the corresponding side wall (16B) symmetrically with the side wall (16A). Also,
Both side walls (16A) and (16B) are provided with projections (20A) and (20B) for releasing the stopper, which will be described later, respectively.

Furthermore, a front cover (21) is provided inside the cassette holder (14), and this front cover (21) is attached to both side walls (
16A) and (16B), respectively.
2A) and (22B), and a guide pin (23) is installed on the side of the front cover (21) to guide the rotation of the front cover (21).
An arcuate groove (24) for guiding the guide pin (23) is formed in the side wall (16A). This front cover (21)
is used to open the front cover (3) of the tape cassette (2). In addition, a pair of grooves (61^) and (62A) extending substantially parallel to each other along the discharge direction are bored in the side wall (16^), and a pair of grooves (61B) are symmetrically formed in the side wall (16B).
, (62B) is drilled.

(25) is a sliding member that sandwiches the cassette holder (14) from the side, and this sliding member (25) connects two approximately symmetrical sliding plates (26) and (27) made of sheet metal to resin-made sliding members (25). They are connected by a presser plate (28). Sliding plate (2
6) and (27) are bent respectively to form the base part (26a
).

(27a), and the base portion (26a) and (2
The tape cassette (2) is placed on 7a), and the tape cassette (2) is held by the holding plate (28) so as to urge the tape cassette (2) in the Y direction. Therefore, one end (28A) of the holding plate (28) is connected to the sliding plate (28A) via the tension coil spring (31A) (not shown).
26), and the other end (28b) of the presser plate (28) is connected to the protrusion (32b) of the sliding plate (27) via a tension coil spring (31B). One end (28a) of the holding plate (28) and the protrusion (32A) of the sliding plate (26) are connected to a pair of grooves (61^) bored in the side wall (16A) of the cassette holder (14), respectively. (62
A) and the other end (28b) of the holding plate (28).
) and the protrusion (32B) of the sliding plate (27), as shown in FIG.
) through a pair of grooves (61B) and (62B) formed in

These pair of grooves (61A) and (62^) and the pair of grooves (61, 8) and (62B) each become narrower in the X direction, so that the cassette holder (14) can be attached to the slide member (25). cassette ejection direction (X
direction), for example, the distance between the other end (28b) of the holding plate (28) and the protrusion (32B) of the sliding plate 27) increases. Therefore, the holding plate (28) rises and the tape cassette H2) can be taken out.

Moreover, in the sliding member (25), the sliding plate (2
6) are formed with elongated holes (29A) (33A) and holes (30A) extending in the X direction, and elongated holes (29B) and grooves (33B) and (30B) are formed symmetrically on the sliding plate (27). Form. Then, the side wall (16) of the cassette holder (14)
Drive pin (17^) and guide pin (18) installed in A)
A) and (19A) are respectively the long length (26) of the sliding plate (26).
29A), the groove (30A) and the long diameter (33A), and the drive pin (17B), guide pin (18B) and (19B) implanted in the side wall (16B) of the cassette holder (14), respectively. Long moving plate (27) (29B)
, the slide member (25) is attached to the cassette holder (14) so as to pass through the grooves (30B) and (33B). In addition, the front cover of the cassette holder (14) (
A hole (34) is bored in the sliding plate (26) of the sliding member (25) in correspondence with the guide pin (23) for the sliding member (21).

Further, the base portion (26a) of the slide member (25) is provided with a punched portion (26b) and a projection (26c), and the base portion (27a) is provided with a punched portion (27b) and a projection (27c).
) will be established. The protrusion (26c) is connected to the tape cassette (2
) is used to release the lid lock member (5) (see Figure 8), and its protrusion (27c) is used to release the lid lock member (5) of the tape cassette (2).
Use as a stopper.

(35) is a main body that houses the above-mentioned cassette holder (14) and slide member (25), and this main body (35)
) consists of a bottom plate (36) and side plates (37) and (38). The bottom plate (36) is equipped with drive motors (7^) and (7B) for driving the supply reel and take-up reel of the tape cassette, as well as a recording/reproducing head (8) and the like.

The side plate (38) of this main body (35) has a drive motor (3
9) is attached, and the rotational force of this drive motor (39) is transmitted to a gear (41) via a gear device (40), and this gear (41) rotates a small gear (42). The rotation axis of this small gear (42) is used as a drive shaft (43), and the side plate (
37), and the side plate (37) is extended by this drive shaft (43).
) drives a pinion (44) mounted on the pinion (44). and,
This pinion (44) causes the rotation wheel (45) of the side plate (37) to
A drive arm (46), which is rotatably attached and partially formed with a gear, is rotated around the axis. This drive arm (
46) is provided with an L-shaped groove (46a), and a spring (63) is wound around the rotation axis (45A). Side plate (3
A drive arm (47) is attached to a position symmetrical to 8) so as to be rotatable around the rotation wheel (45B), and this drive arm (47) is
7) is driven by a small gear (42). Therefore, the drive arms (46) (47) are rotated synchronously by the drive motor (39).

Further, a locking arm (49) is rotatably attached to a shaft (48) implanted in the side plate (37). This locking arm (49
) is given rotational force by a tension coil spring (50),
The locking arm (49) and the outer ring (46) of the drive arm (46)
c) A rod (51) is interposed between the two (see FIG. 7A).

Additionally, the side plate (37) has three L-shaped slits (52).
A), (53A) and (54A) are formed, and the sliding plate (26) of the sliding member (25) is inserted into these slits, respectively.
) through the side wall (16A) of the cassette holder (14)
Drive pin (17^) and guide pin (18A) installed in
and insert the guide pin (19A). Similarly, the side plate (38
) also has three slits (52B), (53B) and (
54B), and drive pins (17) implanted in the side wall (16B) of the cassette holder (I4) through the sliding plates (27) of the slide member (25) in these slits, respectively.
B), insert the guide pin (18B) and guide pin (19B). The drive pins (17A) and (17B) also pass through the groove (46a) of the drive arm (46) and the groove (47a) of the drive arm (47), respectively.

In addition, a movable stopper (55) is installed in the inner groove of the side plate (37).
), and the tip of this movable stopper (55) (
55a) is made to float above its side plate (37) in its free state. Similarly, a movable stopper (56) with a raised tip (56a) is embedded in the inner groove of the side plate (3 days). Stoppers (59) and (60) are provided at one ends of the side plates (37) and (38) in the cassette ejection direction, respectively.
) to form. The tip (55) of the movable stopper (55)
Slide plate (25) between a) and stopper (59)
The sliding plate (26) of the movable stopper (56) is fitted, and the sliding plate (27) of the sliding plate (25) is fitted between the tip (56a) of the movable stopper (56) and the stopper (60).

Limit switches (58A) and (58B) are rotatably placed near the stoppers (59) and (60), respectively.
will be established. These limit switches (58A) and (5
8B) are respectively biased by springs (59^) and (59B) (springs (59A) are not shown), and the tape cassette (
2) is not loaded, the tips of these limit switches (58A) and (58B) are attached to the punched portion (26b) of the base portion (26a) of the slide member (25).
) and the base part (27a>) so as to protrude from the punched part (27b) (see Fig. 4B).
Inside is the front cover (2) of the cassette holder (14).
1) A groove is carved for moving the guide pin (23) connected to the guide pin (23) in an arc shape.

When these limit switches (58A) and (58B) rotate, an electric signal is output. In addition, the tips (55a) and (2) of the movable stoppers (55) and (56)
56a) are pressed against the side plates (37) and (38), an electric signal is also output, and the drive arm (4
Various control signals such as electrical signals are generated according to the rotation angles of (6) and (47).

The tape cassette (2
) In the initial state, the drive pin (17A) of the cassette loading device of this example is connected to the three/ ) of the side plate (37) as shown in FIG. 4A.
(52A) has a drive arm (
46). Therefore, Figure 4B
As shown in FIG. 2, the slide member (25) is in a state of being shifted to the maximum extent in the X direction with respect to the cassette holder (14), and the presser plate (28) of the cassette holder (14) is pushed up.

Therefore, as shown in FIG.
The front cover (3) of 2) can be pushed in until it comes into contact with the front cover (21) of the cassette holder (14). The position of the tape cassette (2) shown in FIG. 5 is also the eject position fPE when the cassette is ejected, but the presser plate (28) is still pushed up at this position. and,
Limit switches (58A) and (58B) are pressed down.

When the tape cassette (2) is further pushed in from the state shown in FIG.
) and (56), so only the cassette holder (14) slides along the slide member (25) with its tape cassette (2) and the 6th FI! It becomes like J.

In the state shown in FIG. 6, the presser plate (28) of the slide member (25) presses the tape cassette (2) from above, and the tape cassette (2) is stably held at the center of gravity. Then, the protrusion (20) of the cassette holder (14)
A) pushes down the tip (55a) of the movable stopper (55), and the protrusion (20B) pushes down the movable stopper (55).
6), the slide member (25) is pushed down (see Fig. 2), so the slide member (25)
4) Be able to move together.

Also, since electric signals are output from the movable stoppers (55) and (56), the drive motor (39)
), the drive arms (46) and (47) rotate in the φ direction, and the tape cassette (2) is automatically conveyed. However, the drive motor (39) may be started in the state shown in FIG. 5, for example.

When the drive arm (46) rotates in the φ direction from the state shown in FIG. 6, the drive pin (17A) moves from the side plate (
37) along the slit (52A) and descend to the lower end of the slit (52A). After this, the locking arm (
The drive motor (39) stops with the edge part (49a) of the drive arm (49) engaged with the edge part (46b) at the tip of the drive arm (46), and the drive arm (46) and drive pin (17^) It is held stably by the action of the spring (63). Similarly, since the drive pins (1, 7B) are held stably, the cassette holder (14)
The slide member (25) is stably held at the loading completion position inside the main body (35).

Also, in this process, the guide pin (23) of the front cover (21) of the cassette organ (14) moves in an arc along the groove carved inside the side plate (37) of the main body (35). , before the tape cassette (2)! (3) is opened together with its front cover (21). Therefore, magnetic tape (
4) can be extracted to the recording/reproducing device side.

Next, to explain the operation of the cassette loading device of this example when ejecting a cassette, the locking arm (49) is released in the state shown in FIG. Rotates in the φ direction. When the drive arm (46) reaches the position shown in Figure 6,
The slide member (2
5) movement in the X direction is prevented. The protrusion amount P0 of the tape cassette (21) in this case corresponds to the protrusion amount of the conventional example shown in FIG.

From the state shown in Figure 6, further adjust the drive arm (46) to minus φ.
When the cassette holder (14) and tape cassette (2) are rotated in the X direction, the cassette holder (14) and the tape cassette (2) slide along the slide member (25) in the ) and (60), the drive motor (39) is stopped and the rotation of the drive arm (46) is stopped.

Therefore, the tape cassette (2) is inserted into the cassette/throat loading slot (9).
) and stops at the position of the protrusion amount P+, and the press plate (28) of the slide member (25) is released.

Further, the protrusion amount P1 is approximately equal to the protrusion amount P0 in FIG. 6 plus the length in the longitudinal direction such as the length (29A) of the sliding plate (26) of the slide member (25), and for example, Po is P can be set to about 20 mm for about 81R1.

Therefore, even if it is assumed that a decorative panel or the like is further provided in front of the cassette loading port (9) in FIG. The finger hooks (6) of 2) are all exposed to the outside, and the tape cassette (2) can be easily taken out by hand.

As described above, the cassette loading device of this example holds the tape cassette by the cassette holder (14) and the slide member (25), and also holds the tape cassette by the cassette holder (14) and the slide member (25).
14) is slidable in the cassette ejection direction with respect to the slide member (25), so it is possible to stably hold the tape cassette (2) during recording and playback, and the amount of protrusion of the tape cassette (2) is reduced when the cassette is ejected. There is an advantage that a large number of values can be set, and the tape cassette (2) can be easily taken out manually from the eject position.

In addition, in the device of this example, movement from loading to ejection of the tape cassette is achieved by using drive pins (17A) and (17B) provided on the cassette holder (14) with drive arms (46) and (
47), the structure is simple and the manufacturing cost is low.

Further, in the device of this example, when the cassette holder (14) slides in the ejection direction with respect to the slide member (25), the presser plate (28) that was holding down the tape cassette (2) from above moves the cassette holder (14) ) grooves (61A) and (61
B) and is released automatically (see Figure 3), the structure for raising and lowering the presser plate (28) is simplified, and the overall structure is more structured. be.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that changes can be made without departing from the gist of the present invention.

For example, the drive pin (17A) of the cassette holder (14) can be connected with a cam or wire instead of the drive arm (46).
, (17B) may be moved, and its drive pin (17B) may be moved.
A), (17B) and its cassette holder (14)
It may be planted on the bottom side.

Also, a fixed stopper (59) of the main body (35)
.

Instead of (60), the movement of the slide member (25) may be limited, for example, by a cam mechanism interlocked with the drive arm (46).

〔Effect of the invention〕

As described above, the cassette loading device of the present invention holds the tape cassette by the cassette holder and the slide member, and also allows the cassette holder to be displaced in the cassette ejection direction with respect to the slide member. The amount of protrusion of the tape cassette from the cassette loading port during ejection can be increased. Therefore, there is an advantage that the tape cassette can be easily taken out manually.

Further, the cassette-loading device of the present invention has the advantage of being simple in structure, since the tape cassette can be displaced from loading to unloading by simply moving the drive pin provided on the cassette holder.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing one embodiment of the cassette loading device of the present invention, FIG. 2 is an exploded plan view of the example shown in FIG.
The figure is a cross-sectional view taken along line I FIG. 5 is a side view showing the state in which the cassette of the embodiment is loaded and ejected with the side plate (37) removed. FIG. 6 is a side view showing the state in which the cassette of the embodiment is pushed in. FIG. 7A is a side view with the side plate (37) removed; FIG. 7A is a side view showing the state when loading the cassette of the embodiment is completed; FIG. 2) is a tape cassette, (1
4) is a cassette holder, (17A) and (17B) are drive pins, (25) is a slide member, (29A),
(29B) are elongated holes, (46) and (47) are drive arms, (52A), (53A), and (54), respectively.
A) are slits, and (59) and (60) are stoppers.

Claims (1)

[Scope of Claims] A cassette holder having a drive pin and holding the tape cassette in the ejection direction, and a groove for guiding the drive pin along the ejection direction, and the tape cassette is moved in a direction crossing the ejection direction. a slide member that is biased and held;
a drive member that urges the drive pin in the ejection direction; and a stopper that restricts movement of the slide member in the ejection direction; and after the slide member stops, the cassette holder is further displaced in the ejection direction. A cassette loading device characterized by being able to