JP2000222796A - Cassette loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open the lid of a small cassette without enlarging a cassette holder. SOLUTION: This device is provided with a cassette holder capable of selectively inserting a standard cassette and a small cassette C2, a torsion coil spring 20 provided in the side face plate 12 of the cassette holder 10 to rotatably support a rotary lever 14 to be rotated along the side face plate 12 and pressing the same to a standby position, a pressed part 14a provided in one end side of the rotary lever to be pressed to a small cassette lid opening member 22 in the moving process of the cassette holder 10, a lid opening lever 19 provided in the other end side of the rotary lever 14, this lid opening lever 19 being provided so as to be freely rotated between a lid engaging position engaged with the lid 15 of the small cassette C2 located in the cassette holder 10 and a retreating position for permitting the insertion of the standard cassette retreated out of the cassette holder 10, and the torsion coil spring 20 being provided to press the lid opening lever 19 to the lid engaging position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device for a magnetic recording / reproducing apparatus for selectively mounting a standard cassette and a smaller cassette smaller than the standard cassette at fixed positions.

[0002]

2. Description of the Related Art As a cassette mounting device of this type of magnetic recording / reproducing device, there is one disclosed in Japanese Patent Application Laid-Open No. 5-41003. FIG. FIG. 8 is a cross-sectional view of the cassette mounting device showing a small cassette inserted state, and FIG. 8 is a cross-sectional view of the cassette mounting device showing a standard cassette inserted state.

FIGS. 6 to 8 show that a cassette holder 2 is disposed in an apparatus main body 1, and the cassette holder 2 has a guide pin 2a guided by a guide hole (not shown) of the apparatus main body 1. It is configured to be movable between a cassette insertion position and a cassette mounting position. In the cassette holder 2, a standard cassette (for example, VHS cassette) C
1 and smaller cassettes (eg, VHS-C
(Cassette) C2 can be selectively inserted, and a lid opening lever 3 is disposed inside and above the cassette holder 2.

The lid opening lever 3 is rotatably supported by a support portion 4 hanging down from the upper surface of the cassette holder 2, and is urged by a spring 5 in the direction of arrow a in FIG. One end of the lid opening lever 3 is provided with a lid pressing portion 3a for pressing the lid 6 of the small cassette C2, and the other end is provided with an engaging projection 3b capable of engaging with the engaging portion 7 of the apparatus main body 1. I have. Although not shown, a cover releasing means for the standard cassette C1 is provided at a side end in the cassette holder 2.

In the above configuration, the cassette holder 2 is located at the insertion position, and as shown in FIG.
When the small cassette C2 is inserted into the cassette holder 2,
Moves from the insertion position to the mounting position side. In this movement process, the engaging projection 3b is engaged with the engaging portion 7 of the apparatus main body 1, and the lid opening lever 3 rotates in the direction of arrow b in FIG. Due to this rotation, the lid pressing portion 3a presses the lid 6 of the small cassette C2, and the lid 6 is positioned at the release position.

When the cassette holder 2 is in the insertion position and the standard cassette C1 is inserted into the cassette holder 2 as shown in FIG. 8, the standard cassette C1 presses the lid opening lever 3, and the lid opening lever 3 is moved. It rotates in the direction of arrow b in FIG. 6 against the spring force of the spring 5. By this rotation, insertion of the standard cassette C1 into the cassette holder 2 is permitted. Then, the lid (not shown) of the standard cassette C1 is located at a release position by lid release means (not shown).

[0007]

However, in the conventional cassette mounting device, when the insertion of the standard cassette C1 into the cassette holder 2 is permitted, the lid opening lever 3 is displaced upward in the cassette holder 2. Because of the configuration, it is necessary to secure a space for retracting the lid opening lever 3 in the cassette holder 2. Accordingly, there has been a problem that the height dimension of the cassette holder 2 is correspondingly increased and the size of the apparatus is increased.

On the other hand, there has been proposed an apparatus for mounting a large DVC cassette and a small DVC cassette, in which a lid opening lever is shared by matching the positions of lids of both cassettes. Since it is necessary to move the positions of the reel and the take-up reel depending on the type of the mounting cassette, the reel base moving mechanism and the reel driving mechanism are complicated and cannot be adopted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a cassette mounting device that can release a lid of a small cassette without increasing the size of the cassette holder.

[0010]

According to a first aspect of the present invention, there is provided a cassette holder capable of selectively inserting a standard cassette and a small cassette, and moving the cassette holder from a cassette insertion position to a cassette mounting position to provide a standard cassette. In a cassette mounting device for mounting a cassette or a small cassette in a fixed position, a rotating lever that rotates along the side plate is rotatably supported on a side plate of the cassette holder, and one end of the rotating lever is provided on one side of the rotating lever. A pressing portion that is pressed by the small cassette lid releasing member in the process of moving the cassette holder is provided, and a lid opening lever is provided on the other end side of the rotating lever, and the lid opening lever of the small cassette positioned in the cassette holder is provided. A lid engaging position for engaging with the lid and a retreat position for allowing the standard cassette to be inserted by retreating from the cassette holder. In rotatably provided, and is characterized in that a first biasing means for biasing said lid opening lever to the lid engaging position.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1A is a schematic side view showing a state where a small cassette is inserted in a cassette mounting apparatus according to an embodiment of the present invention, and FIG. 1B is a schematic bottom view showing a state where the small cassette is inserted in the cassette mounting apparatus. FIG. 2 is a schematic side view showing the cassette mounting device in a small cassette mounting state, FIG. 3 is a schematic bottom view showing the cassette mounting device in a large cassette insertion state, and FIG. 4 is a large cassette insertion state in the cassette mounting device. FIG. 5 is a schematic side view showing a state in which the cassette mounting device is mounted on a large cassette.

1 to 5, a cassette holder 10 is disposed in an apparatus main body (not shown). In the cassette holder 10, a standard cassette C1 as shown in FIGS. A) and the small cassette C2 as shown in FIG. 1 (B) can be selectively inserted.

The cassette holder 10 is configured to be movable in the apparatus main body between a cassette insertion position and a cassette mounting position. At the cassette insertion position, the standard cassette C1 or the small cassette C2 is inserted from outside the apparatus main body. The standard cassette C1 or the small cassette C2 in the inserted state can be ejected out of the apparatus main body. At the cassette mounting position, the standard cassette C1 or the small cassette C2 is engaged with the reel base 11 so that the tape can be run by the rotation of the reel base 11. That is, the standard cassette C1
And the small cassette C2 can be selectively mounted at fixed positions.

A rotary lever 14 is rotatably provided on the side plate 12 of the cassette holder 10 with the support pin 13 as a fulcrum. The rotary lever 14 rotates vertically along the side plate 12. The support pin 13, which is the center of rotation of the rotary lever 14, is disposed on the same axis L (shown in FIG. 1B) as the center of rotation of the lid 15 of the small cassette C2 inserted into the cassette holder 10. The support pin 13 supports a torsion coil spring 16 as a second biasing means.

One end of the torsion coil spring 16 is hooked on a spring hook 10a of the cassette holder 10, and the other end is hooked on a pressing portion 14a on one end of the rotary lever 14. The rotating lever 14 is urged toward the standby position (the direction of the arrow a in FIG. 1A) by the spring force of the torsion coil spring 16.

On the other end of the rotating lever 14, a lid opening lever 19 is supported via a support pin 18, and this lid opening lever 19 is engaged with the lid 15 of the small cassette C2 located in the cassette holder 10. Rotation in the horizontal direction is possible between a lid engagement position (the position in FIG. 1B) and a retreat position (the position in FIG. 3) which retreats from the cassette holder 10 and allows insertion of the standard cassette C1. It is configured. First
The torsion coil spring 20 as the urging means is supported by the support pin 18, and the lid opening lever 19 is urged toward the lid engaging position (the position in FIG. 1B) by the spring force of the torsion coil spring 20.

One end of a lever pressing plate 21 is rotatably supported on the side plate 12, and the lever pressing plate 21 is urged toward the lid opening lever 14 by a urging means (not shown) with a weak urging force. ing. Although the free end side of the lever pressing plate 21 is disposed so as to protrude into the cassette holder 10, the small cassette C2
Does not protrude into the insertion area.

On the other hand, a small cassette lid releasing member 22 is provided on the apparatus main body side, and the pressing portion 14a of the rotating lever 14 is brought into contact with the lid releasing member 22 in the vertical moving process during the moving process of the cassette holder 10. In contact therewith, the rotating lever 14 is configured to rotate toward the lid release position (the direction of the arrow b in FIG. 1A) against the spring force of the torsion coil spring 16.

A standard cassette lid releasing member 23 is provided on the main body of the apparatus. The lid 2 of the standard cassette C1 is moved vertically during the vertical movement of the cassette holder 10.
4 is configured to contact the standard cassette lid release member 23 to rotate the lid 24 to the lid release position (the direction of arrow c in FIG. 5).

Next, the operation of the above configuration will be described. When the cassette holder 10 is at the insertion position, and FIGS.
As shown in FIG.
When the cassette 2 is inserted, the cassette holder 10 moves from the insertion position to the mounting position. In the vertical movement process during this movement process, the small cassette lid releasing member 22 presses the pressing portion 14a of the rotating lever 14, and the rotating lever 14 resists the spring force of the torsion coil spring 16 in FIG. It rotates in the direction of arrow b. By this rotation, the lid opening lever 19 presses the lid 15 of the small cassette C2, and as shown in FIG. 2, the lid 15 is located at the release position at the cassette mounting position.

In the process of opening the lid, the center of rotation of the lid opening lever 19 and the center of rotation of the lid 15 of the small cassette C2 are substantially on the axis L.
The contact surface between the lid 9 and the lid 15 almost does not slide.
5 is pressed, so that the lid is opened smoothly.

When the standard cassette C1 is inserted into the cassette holder 10 as shown in FIG. 3, the standard cassette C1 presses the lever pressing member 21 during the insertion process. 3 together with the lever pressing member 21, the lid opening lever 19 rotates in the direction of arrow d in FIG. 3 against the spring force of the torsion coil spring 20. By this rotation, the lid opening lever 19 is displaced to the retreat position, and the insertion of the standard cassette C1 into the cassette holder 10 is allowed. Then, the cassette holder 10 moves from the insertion position to the mounting position side, and as shown in FIG. 4, in the vertical movement process during this movement process, the standard cassette cover release member 23 presses the cover 24 of the standard cassette C1, As shown in FIG. 5, at the cassette mounting position, the lid 24 is located at the release position.

In the course of this lid releasing operation, when the standard cassette C1 is allowed to be inserted into the cassette holder 10, the lid opening lever 19 is merely arranged along the side plate 12, so that the lid is opened in the cassette holder 10. There is no need to secure a retreat space for the lever 19. Therefore,
The lid 15 of the small cassette C1 can be released without increasing the size of the cassette holder 10.

On the other hand, when the cassette eject operation is performed, the rotating lever 14 is moved to the standby position side torsion coil spring 1.
6, the rotating lever 14 is reliably returned to the standby position by the urging force of the coil spring 16 during the movement of the cassette holder 10 from the cassette mounting position to the cassette insertion position. The mounting cassette is the standard cassette C.
In the case of 1, when the standard cassette C1 is ejected from the cassette holder 10, the lid opening lever 19 is reliably returned to the lid engaging position by the urging force of the torsion coil spring 20.

According to the above embodiment, the rotating lever 1
4 is urged by the torsion coil spring 16 toward the standby position,
When the pressing portion 14 a is pressed by the small cassette lid releasing member 22, the pressing portion 14 a rotates toward the lid releasing position against the urging force of the torsion coil spring 16. The rotation of the rotation lever 14 may be controlled by providing a cam groove that engages with 14a on the apparatus main body side.

According to the above embodiment, both the first urging means and the second urging means are constituted by the torsion coil springs 20, 16, but are constituted by springs other than the torsion coil springs 20, 16. Also, even if it is not a spring, the lid opening lever 1
9 can be urged toward the lid engaging position or the rotating lever 14 can be urged toward the standby position.

[0028]

As described above, according to the first aspect of the present invention, the side plate of the cassette holder rotatably supports the rotating lever that rotates along the side plate. One end is provided with a pressing portion that is pressed by the small cassette lid releasing member during the movement of the cassette holder, and the other end of the rotating lever is provided with a lid opening lever, and the lid opening lever is located in the cassette holder. The small cassette is rotatably provided between a lid engaging position for engaging with the lid of the small cassette and a retreat position for allowing the standard cassette to be inserted by retreating from the cassette holder, and the lid opening lever being engaged with the lid. Since the first biasing means for biasing to the position side is provided, when the insertion of the standard cassette into the cassette holder is permitted, only the lid opening lever is arranged along the side plate. , It is not necessary to secure a retraction space in the lid opening lever in the cassette holder, can release the lid of the small cassette without increasing the size of the cassette holder. In addition, since it can be constituted by the rotating lever, the cover opening lever and the first urging means, the structure is simple and the cost is low.

[Brief description of the drawings]

FIG. 1A is a schematic side view showing a small cassette inserted state of a cassette mounting device according to an embodiment of the present invention,
FIG. 3B is a schematic bottom view showing the small cassette inserted state of the cassette mounting device.

FIG. 2 is a schematic side view showing a small cassette mounted state of the cassette mounting apparatus according to one embodiment of the present invention.

FIG. 3 is a schematic bottom view showing a state where a large cassette is inserted in the cassette mounting device according to the embodiment of the present invention.

FIG. 4 is a schematic side view showing a state where a large cassette is inserted in the cassette mounting apparatus according to the embodiment of the present invention.

FIG. 5 is a schematic side view showing a large cassette mounted state of the cassette mounting apparatus according to one embodiment of the present invention.

FIG. 6 is a perspective view of a main part of a cassette mounting apparatus according to a conventional example.

FIG. 7 is a cross-sectional view of a cassette mounting device showing a state in which a small cassette according to a conventional example is inserted.

FIG. 8 is a cross-sectional view of a cassette mounting device showing a standard cassette inserted state according to a conventional example.

[Explanation of symbols]

 C1 Standard cassette C2 Small cassette 10 Cassette holder 12 Side plate 14 Rotating lever 14a Pressing portion 15 Lid 16 Torsion coil spring (second biasing means) 19 Lid opening lever 20 Torsion coil spring (first biasing means) 22 Small cassette lid release Member L axis

Claims (1)

[Claims] 1. A cassette in which a standard cassette and a small cassette are selectively inserted, and the cassette holder is moved from a cassette insertion position to a cassette mounting position to mount the standard cassette or the small cassette in a fixed position. In the mounting device, a rotating lever that rotates along the side plate is rotatably supported on a side plate of the cassette holder, and a small cassette lid is opened at one end of the rotating lever during the movement of the cassette holder. A pressing portion pressed by a member, a lid opening lever provided on the other end side of the rotating lever, and a lid engaging position for engaging the lid opening lever with a lid of the small cassette located in the cassette holder; A cover that is rotatably provided between a cassette holder and a retracted position that allows the standard cassette to be inserted by retracting from the cassette holder; Only cassette loading apparatus characterized in that a first biasing means for biasing the lid engaging position side lever.