JPS6216269A - Cassette loading device - Google Patents

Abstract

PURPOSE:To proceed the loading action of a cassette in accordance with the prescribed program without fail by a mechanism to guide a cassette tray along an L-shaped channel in the horizontal and vertical directions and a mechanism to drive a rotating lever and a pressing lever. CONSTITUTION:When a cassette 1 is inserted into a tray 3, a swinging gear 31 is rotated by the start of a motor in the clock-wise direction, and a rotating lever 18 pushed by a driving body 33 is rotated in the clock-wise direction, an engaging protrusion 15 in a guide notch 20 is shifted in the right direction in an L-shaped guide hole 13b and the tray 3 accompanies it. When the protru sion 15 is shifted to the vertical part of a hole 13b, the tray 3 is also descended, a driving body 34 rotates a plunge lever 36 in the lower direction, and a pressur ing arm 43 mounted on the lever 36 presses the upper surface of the cassette. The motor and the gear 31 are rotated reversely, the above-mentioned process is proceeded reversely and the cassette is discharged. Consequently, the operation from the insertion of the cassette to load and discharge the cassette can be proceeded without the erroneous action in accordance with the prescribed pro gram.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a cassette loading device used in a cassette handling device such as a video tape recorder, and in particular to a front loading type cassette loading device. .

Conventional Technology For example, most of the front-loading methods for cassettes used in video tape recorders (VTRs) have traditionally been to insert the cassette with its longitudinal sides facing forward and backward (so-called ``sideways insertion''). ”
) was adopted. In this sideways insertion method, the cassette insertion slot provided on the front panel of the VTR needs to be wide; for example, in the VH3 method, the width of the longitudinal side of the cassette must be 188 mm or more, or in the β method, the width of the cassette is 15611I11. Each of the above dimensions was required.

Nowadays, there is a tendency for various functions to be added to VTRs, and therefore, operation buttons and switches, as well as indicator lamps and displays, etc., related to these functions must be arranged closely on the front panel. Must be. Moreover, as recent VTRs have become smaller, their front panels have also become smaller, creating a need for a more efficient layout on the front panel.

Therefore, in order to reduce the area occupied by the cassette insertion slot on the front panel, insert the cassette with its narrow side facing forward and backward (so-called "vertical insertion J").
A method was proposed. In this way, if the cassette is inserted vertically, the width of the cassette insertion slot is, for example, V
104 am for HS method, 96IllIl for β method
It is sufficient that the insertion opening can pass through the insertion opening, and the widthwise dimension of the insertion opening can be made small.

Problems to be Solved by the Invention By the way, in the front loading method, the following operations are achieved. That is, a. When a cassette is inserted and accepted into the cassette tray, b. It is first sucked in horizontally, usually 50 to 80
It moves horizontally by about a+ni, and when the C0 horizontal movement is completed, it descends about 20 to 26111 meters vertically.

At the lowest point of descent, the cassette is strongly pressed against the bottom support to complete the predetermined installation. When ejecting a cassette, the operations described above are reversed.

The cassette mounting device must be configured to ensure that the cassette moves as described above in the order described above while maintaining the cassette in a horizontal position. It is undesirable for the cassette to wobble or tilt during movement.

In addition, in such a cassette loading device, the weight of the cassette itself ff1(2
500) is sufficient, and maintaining that posture does not require much force. However, at the lowest point of vertical movement, which is the mounting position of the cassette, the cassette is placed about 1.5 to 2 kQ with respect to the bottom support.
If you do not press it with a certain amount of force, release the brake on the cassette reel, then pull out the tape.
Furthermore, it is not possible to make the tape dock with the reel shaft in a stable state and bring the tape into a good playing state. Therefore, the cassette mounting device must be configured to exert a force that strongly pushes the cassette downward, at least just before the final point of the vertical descent of the cassette.

However, when front-loading a cassette by inserting it vertically, the front cover of the cassette is located on either the left or right side (usually the left side) in the direction of movement of the cassette. It is necessary to perform an operation called pulling out. Therefore, these aspects must be left as wide open as possible. This results in limitations on the design of the cassette loading device. More specifically, the mechanisms and parts responsible for holding and moving the cassette in the cassette loading device must be arranged in such a way that they do not interfere with the tape being pulled out after opening the front WJ cover of the cassette. It won't happen. Therefore, the cassette tray holding the cassettes is subject to structural constraints, and in particular, the cassettes must be strongly pressed downward without tilting at the cassette mounting position.

Therefore, the present invention provides a cassette loading device having a front loading structure in which a cassette is inserted vertically, while the loading operation of the cassette progresses reliably based on a predetermined program. This is an attempt to solve the technical problem of making pressing force work.

Means for Solving the Problems The cassette loading device of the present invention includes a cassette tray that holds cassettes, and one side of the cassette on the cassette tray in the longitudinal direction opposite to the side where the front cover of the cassette is located. a vertical M board provided to face the
L that connects the insertion position and the mounting position of the cassette and consists of a horizontal part and a vertical part that descends from the end of the horizontal part.
a guide mechanism that guides the cassette tray parallel to the vertical substrate along the linear path; and an engagement protrusion that is attached to the cassette tray and extends from the cassette tray toward the vertical substrate.
A rotary lever is rotatably attached to the vertical substrate and moves the cassette tray along an L-shaped path by rotating while engaging with an engaging protrusion; First, a rotary drive source that engages with a rotary lever and rotates the rotary lever reciprocatingly while being driven by the rotary drive source to move along a circumferential orbit. The above-mentioned technical problem is solved as follows.

a pusher for acting on at least one of the cassette or the cassette tray to apply a downward force to the cassette immediately before the end of at least the vertical portion of the movement of the cassette in the direction from the insertion position to the loading position; A lever is rotatably supported with a pivot axis oriented perpendicular to the vertical substrate.

Further, the rotation of the pressing lever is controlled by a pressing lever driving body that is driven periodically with the rotating lever driving body so as to move along a circumferential orbit by a rotational drive source.

That is, at least at the final point straight when the pivot lever is moving the cassette tray downward in the vertical portion of the L-shaped path, this push lever driver engages the push angle lever so that the push lever is moved downward. , is rotated to apply a downward force to at least one of the cassette or cassette tray.

To explain the operation of the action cassette from the insertion position to the attachment position, the rotation of the rotational drive source causes the rotation lever driver to move along a circumferential orbit, and at regular intervals, the pressing The lever drive also moves along a circumferential path. In response to this movement of the rotary lever driver, the rotary lever is rotated, and the cassette tray is moved along the L-shaped path via the engagement protrusion that engages with the rotary lever. On the other hand, in response to such movement of the cassette tray, at least immediately before the cassette reaches the R end point of the vertical portion of the L-shaped path, the pressing lever driver engages with the pressing lever,
The push lever is rotated to apply a downward force to at least one of the cassette or cassette l-lay.

When ejecting the cassette from the loading position to the insertion position, the rotational drive source is reversed, and the rotating lever driver and the pressing lever driver move in opposite directions.

Embodiment FIGS. 1 to 9 are for explaining one embodiment of the present invention.

1 and 2 show the cassette 1 in the insertion position, with FIG. 1 being a plan view and FIG. 2 being a right side view. The cassette 1 shown here is a video recorder, and is inserted, for example, through an insertion opening 2 provided in a front panel 1 of a VTR. The inserted cassette 1 is
The force is held in the cut tray 3. The cassette 1 includes a front cover 4 along the longitudinal side located on the left side in FIG. The cassette tray 3 has a front cover 4 like this.
To hold the cassette 1 in a manner that does not prevent the opening of the cassette 1. That is, the cassette tray 3 includes a top wall 5, a side wall 6, a bottom wall 7, and an end surface u8 so as to hold the right portion of the cassette 1 in FIG. Therefore, the cassette tray 3 is largely open on the left side of the cassette 1.

As shown in FIG.
0 and an upper frame 11.

The vertical board 9 is also shown in FIG. 2, and the main operating members included in this cassette mounting device are mounted almost centrally here. The upper frame 11 has a 1-shaped cross section, but its vertically extending portion is formed within a range that does not impede opening of the front cover 4 of the cassette 1 and withdrawal of the tape.

In FIG. 3, the cassette 1 is inserted along an L-shaped path consisting of a horizontal portion and a vertical portion descending from the end thereof, connecting the insertion position of the cassette 1 and the mounting position (FIG. 9). A guiding mechanism is shown that guides the tray 3 parallel to the vertical substrate 9. FIG. 3 shows a portion of the vertical substrate 9 shown in FIG. 2, with some of the components shown in FIG. 2 removed.

The vertical substrate 9 is provided so as to face a side surface 12 opposite to the side surface on which the front surface M4 of the cassette 1 is located. The vertical board 9 has three L-shaped guide holes 1 having a shape that corresponds to an L-shaped path connecting the insertion position and the mounting position of the cassette 1.
3a, 13b, and 13C are provided in parallel to each other passing through the vertical substrate 9. The uppermost L-shaped guide hole 13a
A guide protrusion 14a provided on the cassette tray 3 is fitted into the guide protrusion 14a. A vertical board 9 attached to the cassette tray 3 is inserted into the middle one-shaped guide hole 13b.
Engagement protrusions 15 extending toward the vertical substrate 9 are fitted together and extend a predetermined length further outward from the vertical substrate 9. A guide protrusion 14C provided on the cassette tray 3 fits into the lowermost L-shaped guide hole 13C.

The two guide projections 14a, 14c described above are preferably constructed of rows having flanges 16, 17 at both ends, as shown in FIG. Such a roller is installed in the guide hole 138. with the vertical substrate 9 between the flanges 16.17.
It fits into 130.

In this way, by configuring the guide projections 14a, 14C with rollers, the guide hole 13 of each guide projection 14a, 14C
Movement within a and 13c becomes smooth.

Further, by sandwiching the vertical substrate 9 between the flanges 16 and 17, the cassette tray 3 is held more firmly to the vertical substrate 9.

As shown in FIG. 3, a pivot lever 18 is attached to the vertical base plate 9 so as to be pivotable about a pivot shaft 19 in association with the engagement protrusion 15. As shown in FIG. The rotating lever 18 has an engaging protrusion 1
A guide cutout 20 is formed for receiving the 5. As will be described later, as the rotary lever 18 rotates, the engagement protrusion 15
guide notch 20 while moving inside the L-shaped guide hole 13b.
In order to achieve smooth movement, it is preferable that the engagement protrusion 15 be constructed of a roller, similarly to the guide protrusions 14a and 14C.

The rotation lever 18 is rotated by the rotational force from the motor 21 shown in FIGS. 1 and 2 being transmitted via the transmission mechanism schematically shown in FIG. 5. Fifth
The figure shows a sub-board 2 fixed to a vertical board 9 in FIG.
The rotation transmission Akebonobashi bridge hidden by 2 is illustrated so that the order of transmission can be understood. In addition, since FIG. 5 is extremely schematic, the gear is also shown as a mere disk.

Referring to FIGS. 1, 2, and 5, the rotation of the small pulley 23 attached to the rotating shaft of the motor 21 is controlled by the belt 2.
4, the signal is decelerated and transmitted to the large pulley 25. The large pulley 25 rotates around a rotating shaft 26 held by the sub-board 22. Coaxially and fixedly with this person pulley 25,
A small first gear F27 is provided, and this first gear 27
The large second gear 28 is connected to the rotating shaft 29 so as to mesh with the rotating shaft 29.
is rotatably provided around the The two rotating shafts are held by the sub-board 22. A small third gear 30Ifi is provided coaxially and fixedly with the second gear r28.

A large swing gear 31 meshes with the third gear 30. Swing gear 31 rotates around a rotating shaft 32 held by sub-board 22.

In this way, the rotation from the motor 21 is transmitted to the swing gear 31 with a large deceleration. Note that the swing gear 31 operates during one operation of the cassette mounting W device.
It is rotated within a range of one revolution. Further, as the motor 21, a motor that can selectively rotate in both forward and reverse directions is used, and the swing gear 31 is rotated reciprocally.

As schematically shown in FIG. 5, a rotating lever driver 33 and a pressing lever driver 34 are provided at different eccentric positions of the swing gear 31, respectively. The rotating lever driver 33 is provided to protrude from the back side of the swing gear 31 in FIG. 5, and the pressing lever driver 34 is provided to protrude from the front side. In this way, both moving bodies 33 and 34 move along their respective circumferential orbits as the swing gear 31 rotates.

The rotary lever driver 33 functions to rotate the aforementioned rotary lever. In other words, the rotating lever drive body 33
is fitted into the guide elongated hole 35 of the rotary lever 18 shown in FIG. Regarding the operation of the rotating lever 18,
This will be explained later with reference to FIGS. 6 to 8.

The pressing lever driver 34 acts on the pressing lever 36 shown in FIGS. 1 and 2, and rotates the pressing lever 36 so that the pressing lever 36 presses the cassette 1 downward. The pressing lever 36 has its main body portion 37 located between the vertical substrate 9 and the upper frame 11, and is rotatably supported near its end with a rotation axis oriented perpendicular to the vertical substrate 9. . In the illustrated embodiment, these rotation axes are two pins 38a located on the same axis near both ends of the main body portion 37 in the width direction.

38b. The pin 38a is connected to the main body portion 3
7 is pivotally supported on a protruding piece 39 extending from the vertical substrate 9,
The pin 38b pivots the body portion 37 on a protruding piece 40 extending from the termination board 10.

In this way, by pivotally supporting the pressing lever 36 at both ends in the width direction, the pressing lever 36 is firmly and rotatably supported. Extending from the main body portion 37 to the outside of the vertical substrate 9,
A driven arm 41 is formed.

The driven arm 41 is a portion on which the aforementioned pressing lever driver 34 directly acts. Furthermore, two pressure contact arms 43a and 43b are fixed to the main body portion 37 with screws or the like, for example. Pressure contact arm 43a.

43b projects from the main body portion 37 in the two directions of the insertion opening. The press-contact arms 43a and 43b are made of a metal plate having spring properties, and are parts that directly contact the cassette 1 or the cassette tray 3.

In this embodiment, a stepped portion 44 is formed extending from the top wall 5 of the cassette tray 3 at a relatively high position. When the cassette tray 3 is in the cassette 1 insertion position as shown in FIGS. 1 and 2, the pressure contact arm 43a rides on this stepped portion 44, and rotates the pressure lever 36 further upward. There is.

Further, a pressure contact arm 4 is attached to the upper wall 5 of the cassette tray 3.
A window 45 for exposing the cassette 1 corresponding to the position 3a
is formed. Due to the presence of this window 45, when the cassette 1 is brought to the mounting position as shown in FIG. 9, the tip of the pressure contact arm 43a comes into direct contact with the upper surface of the cassette 1.

Further, an engagement piece 42 is provided extending from the top wall 5 so as to cover the window 45 from above. When the cassette tray 3 moves in the vertical direction, this engagement piece 42 engages the pressing lever 3.
6, the rotation of the pressing lever 36 actively follows the vertical movement of the cassette tray 3.

The cassette tray 3 is maintained in its position mainly by the guide protrusions 14a and 140 provided on the vertical board 9 side, but other methods may be used as long as the opening of the front surface M4 of the cassette 1 and the tape withdrawal as described above are not obstructed. A posture maintaining means may be provided. In this embodiment, as an example, a reinforcing plate 46 is screwed onto the upper wall 5 of the cassette tray 3. The reinforcing plate 46 extends to the upper frame 11 side, and a receiver formed slightly projecting from the upper frame 11 rests on the plate 47. While the cassette tray 3 moves in the horizontal part of the L-shaped path, the reinforcing plate 46 slides on the plate 47, and when the cassette tray 3 moves in the vertical part, the reinforcing plate 46 slides on the plate 47 as shown in FIG. The support is now detached from the plate 47.

Further, as shown in FIGS. 1, 3, and 9, protruding pieces 48 and guide rollers 49 may be provided to protrude from the end wall 8 of the cassette tray 3 and be vertically shifted. When the cassette tray 3 moves along the vertical portion of the L-shaped path, these projecting pieces 48 and guide rollers 49 fit into guide holes (not shown) provided in the terminal board 10 and extending in the vertical direction. The movement contributes to maintaining the posture of the cassette tray 3.

As shown in FIGS. 1 and 3, a leaf spring 45 is provided extending from the top wall 5 of the cassette tray 3. As shown in FIGS. The leaf spring 45 is connected to the cassette 1 placed in the cassette tray 3.
The cassette 1 is elastically contacted with the upper surface of the cassette tray 3, and the positioning of the cassette 1 within the cassette tray 3 is made more secure.

Next, the operation of the cassette loading device of this embodiment will be explained with reference mainly to FIGS. 6 to 8. 6th
In the figures to FIG. 8, the swing gear 31 is shown in imaginary lines, and the rotating lever drive body 33 and the pressing lever drive body 34 provided thereon, as well as the rotation shaft 32 serving as the center of rotation, are respectively It is shown as a hatched circle.

As shown in Fig. 6, the cassette 1 is inserted into the insertion slot 2 (Fig.
When the cassette 1 is inserted into the cassette tray 3 from the position shown in FIG. Along with this, the rotary lever driver 33 moves inside the guide elongated hole 35 of the rotary lever 18 while drawing a circumferential orbit.
rotated in the direction. With this rotation of the rotation lever 18, the engagement protrusion 15 located within the guide notch 20 is moved into the single-shaped guide hole 1.
Move the horizontal part of 31) to the right. ζ, the cassette tray 3 holding the cassette 1 also moves in the same direction. At this time, the guide protrusion 148.14
While C moves within the 1-shaped guide holes 13a and 13c,
Maintain the posture of the cassette tray 3.

The motor 21 is configured to be turned on when the pressure contact arm 43a is removed from the step portion 44 by pushing the cassette tray 3 as described above. That is, although not shown, a switch is provided in association with the pressing lever 36, which is activated in response to the movement of the pressing lever 36 that occurs when the pressure contact arm 43a rides on the stepped portion 44 or conversely descends from the stepped portion 44. The control system is configured to turn the motor 21 on or off, or to rotate it forward or reverse, depending on the operation of the switch. Note that when the press arm 43a comes off the stepped portion 44, the press lever 36 is rotated to a downwardly inclined state, but this rotation is caused by the weight of the press lever 36 or by an active spring means or the like. or a combination thereof. For example, when using spring means,
The reaction force from the activation of the switch (e) above may be used as a spring means.

When the rotating lever 18 further rotates in the direction of arrow 52, the engaging protrusion 15 moves from the horizontal portion to the vertical portion of the L-shaped guide hole 13b. And this time, the engagement protrusion 15
descends in the vertical portion of the single-shaped guide hole 13tl. In response to this, the cassette tray 3 holding the cassette 1 also descends.

Even when the cassette tray 3 is lowered, the guide protrusion 14
The fitting of the holes a and 14c into the L-shaped guide holes 13a and 13c helps to maintain the horizontal posture of the cassette tray 3.

Also, at this stage, the engagement piece 42 engages with the pressure contact arm 43a, and the pressing lever 36 actively follows the lowering of the cassette tray 3 and tilts.

FIG. 7 shows the situation immediately before the final point of such a descent. In this state, the rotary lever driver 33 provided on the swing gear 31 presses the rotary lever 18 in the direction of arrow 52, and further presses the lever driver 33 provided on the swing gear 31.
4 comes into contact with the pressing lever 36. but,
Immediately after the pressing lever driver 34 comes into contact with the pressing lever 36, the pressing arms 43a, 4 of the pressing lever 36
3b cannot move such a large force to the cassette 1. Therefore, the swing gear 31 is slightly rotated further in the direction of the arrow 51.

FIG. 8 shows the final state 81 of the cassette 1. From the state shown in FIG. 7, the swing gear 31 is
When further rotated in the direction, the pressing lever driver 34
Rotate the pressing lever 36 roughly downward. In response to this, the pressure contact arms 43a and 43b move their elasticity to strongly press the top surface of the cassette 1. This state is also shown in FIG. Note that the final installed state of the cassette 1-1 shown in FIGS. 8 and 9 is substantially held by the pressing lever 36, so at this point, as shown in FIG. The drive body 33 may be suspended in the guide slot 35 of the rotary lever 18.

When the conditions shown in FIGS. 8 and 9 are achieved,
Motor 21 is turned off.

When ejecting the installed cassette 1, the motor 21 is rotated in the reverse direction. As a result, swing gear 31 is rotated in the direction opposite to arrow 51. Therefore, the above-described operations proceed in reverse, and finally a state as shown in FIG. 6 is obtained.

When the state shown in FIG. 6 is reached, the pressure welding arm 43a is
4, the pressing lever 36 rotates upward, a switch (not shown) is activated, and the motor 21 is turned off again. 1 can be removed from this cassette loading device.

Although the present invention has been described above in connection with the illustrated embodiment, the illustrated embodiment does not fall within the scope of the present invention.
Variations are possible in several respects.

For example, a guide mechanism that guides a cassette tray along an L-shaped path connecting a cassette insertion position and a mounting position is composed of a plurality of L7 guide holes and a plurality of guide protrusions as shown in the figure. Others, for example, JP-A-58-14
The guide mechanism described in Japanese Patent No. 1462 may also be used.

Here, the guide mechanism is divided into a mechanism for guiding the cassette tray in the horizontal direction and a mechanism for guiding it in the vertical direction, and the guide mechanism in the horizontal direction is guided by the engagement of the longitudinal guide hole and the guide protrusion. However, in the vertical direction, an attempt is made to lower the slider using a slider that receives a guide protrusion in the direction in which the cassette tray enters horizontally, and a slider guide means that guides the slider in the vertical direction. It's Surano.

Therefore, when the guide protrusion passes the horizontal portion and approaches the vertical portion, the cassette tray engages with the slider and descends as it is.

Further, in relation to the above-mentioned guide mechanism, either one of the guide protrusions 148, 14G shown in the illustrated embodiment may be provided with the function that the engagement protrusion 15 has. In other words,
The illustrated engagement protrusion 15 and central L-shaped guide hole 13b may be omitted, and either one of the guide protrusions 14a, 14C may be engaged with the rotating lever 18.

Further, in the illustrated embodiment, both the rotary lever drive body 33 and the pressing lever drive body 34 are provided on the swing gear 31 which is a common rotating body, but if they rotate in a periodic manner with each other, The rotating lever drive body and the pressing lever drive body may be provided in separate rotary bodies, respectively. For example, a gear equivalent to the swing gear 31 is further added to the third gear 3.
0 (FIG. 5), either one of a rotating lever drive body or a pressing lever may be provided on this gear, and the other may be provided on a swing gear.

Further, in the illustrated embodiment, the pivot shaft 19 of the rotation lever 18 is
Although the pivot shaft 19 is directly attached to the vertical substrate 9, the pivot shaft 19 may be attached to another substrate such as the sub-board 22 that performs the same function as the vertical substrate 9. in short,
As a result, it is only necessary that the rotation lever 18 is rotatably attached to the vertical substrate 9.

Further, although the pressing lever 36 is rotatably supported by the beams 38a and 38b, it may be rotatably supported by, for example, the terminal board 10 via a leaf spring.

Further, although the pressing lever 36 is configured to press the cassette 1, it can also be configured to press the cassette tray 3 to achieve substantially the same function.

Further, although the motor 21 used in the embodiment functions as a rotational drive source, a rotational drive source used in other parts of the VTR may alternatively be used.

Further, in the illustrated embodiment, the pressing lever 36 is pressed against the cassette tray 3 just before the cassette tray 3 completes its vertical descent.
Although the pressing force is applied to the object, the pressing force may be applied from the time when the vertical movement starts after the horizontal movement is completed.

Effects of the Invention As described above, according to the present invention, the movement of the cassette tray and the movement of the cassette are achieved by extracting the operation from the rotating lever driving body and the pressing lever driving body, which move along circumferential orbits in a periodic manner. Since the pressure is applied, the operation from inserting the cassette to mounting it, and from putting it on to ejecting the cassette, is easy.
According to a predetermined program, this can be achieved without malfunction.

In addition, when the cassette is installed, the pressing lever strongly presses the cassette downward, which advantageously compensates for the weak holding of the cassette tray, which is a problem when the cassette is inserted vertically, and the cassette reel is It is possible to realize the cassette mounted state with high reliability, such as releasing the brake and stably docking the reel on the reel shaft.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a cassette loading device according to an embodiment of the present invention, and shows a state in which a cassette 1 is in an insertion position. FIG. 2 is a right side view of the cassette loading device in the state shown in FIG. 1. FIG. 3 shows the vertical board 9 and its related components viewed from the same angle as FIG. 2, mainly showing the guide mechanism for the cassette tray 3. FIG. 4 shows the guide protrusion 14a shown in FIG.
. 14c is an enlarged sectional view showing a fitted state between L-shaped guide holes 13a and 13c. FIG. 5 schematically shows the rotation transmission mechanism from the motor 21 shown in FIG. 2 to the swing gear 31. 6 to 8 sequentially show the operations of the cassette loading device realized as the swing gear F31 rotates. FIG. 9 is a plan view of the cassette loading device, showing the cassette 1 in the loading position. In the figure, 1 is a cassette, 2 is an insertion slot, 3 is a cassette tray, 4 is a front cover, 9 is a vertical board, 12 is a side surface, 13
a, 13b, 13c are single-shaped guide holes, 14a, 14
c is a guide projection, 15 is an engagement projection, 16.17 is a flange, 18 is a rotating lever, one is a pivot shaft, 20 is a guide notch,
21 is a motor, 22 is a sub-board, 31 is a swing gear, 3
2 is a rotating shaft, 33 is a rotating lever driver, 34 is a push lever driver, 35 is a guide elongated hole, 36 is a push lever, 38a
. 38b is L'n, 41 is a driven arm, and 43a and 43b are pressure contact arms.

Claims (6)

[Claims] (1) A cassette tray that holds a cassette, and a vertical board that is provided to face one longitudinal side of the cassette on the cassette tray that is opposite to the side where the front cover of the cassette is located; An L consisting of a horizontal part and a vertical part descending from its end, connecting the insertion position and the mounting position.
a guide mechanism that guides the cassette tray parallel to the vertical board along the letter-shaped path; an engaging protrusion that is attached to the cassette tray and extends from the cassette tray toward the vertical board; and a guide mechanism that is rotatably attached to the vertical board. and a rotating lever that moves the cassette tray along an L-shaped path by rotating while engaging with the engagement protrusion, and a rotating shaft that is perpendicular to the vertical substrate and is rotatably supported. and immediately before the final point of at least the vertical portion of the movement of the cassette in the direction from the insertion position to the mounting position,
a pressing lever for applying a downward force to the cassette by acting on at least one of the cassette or the cassette tray; a rotary drive source selectively rotated in both forward and reverse directions; A rotary lever driver that engages with a rotary lever and rotates the rotary lever back and forth while being driven to move; and a rotary lever that is driven to move along a circumferential orbit by a rotary drive source. While being driven cyclically with the driver, the pivoting lever engages the pusher lever to move the cassette tray downwardly in the vertical portion of the L-shaped path, at least just before the final point. A cassette loading device comprising: a pressing lever driver that rotates the pressing lever so as to apply a downward force to at least one of the trays. (2) The guide mechanism includes an L-shaped guide hole that is provided through the vertical substrate and has a shape that correlates to the L-shaped path, and a guide protrusion that is provided on the cassette tray and moves while fitting into the L-shaped guide hole. A cassette mounting device according to claim 1, comprising: (3) The cassette mounting device according to claim 2, wherein the guide protrusion is constituted by a roller having flanges at both ends, and the roller fits into the guide hole with a vertical substrate sandwiched between the flanges. (4) Near both ends of the pressing lever in the width direction,
A cassette mounting device according to any one of claims 1 to 3, which is pivotally supported by a pin. (5) The cassette mounting device according to any one of claims 1 to 4, wherein the portion of the pressing lever that acts on at least one of the cassette and the cassette tray is made of a material with spring properties. . (6) The rotating lever driver and the pressing lever driver are respectively provided at different eccentric positions of a common swing gear that is rotationally driven by a rotational drive source. The cassette loading device according to any one of the above.