JP2863418B2 - Cassette loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a VTR (Video
Tape Recorder), DAT (Digita
More specifically, the present invention relates to a cassette loading device used for a magnetic recording / reproducing device such as an audio tape recorder, and more particularly, to a fixed chassis in which a tape traveling system component is disposed, a lifting / lowering means for vertically moving a cassette holding portion for holding a tape cassette, One end is attached to the elevating means, and the urging means constantly urges the cassette holding portion in the direction of the tape take-out position. The present invention relates to a cassette loading device having a chassis.

[0002]

2. Description of the Related Art A conventional cassette loading apparatus of this kind is shown in FIG.
This will be described below with reference to FIGS.

FIG. 4 is a schematic side view showing a state where the cassette holding portion is located at an upper position, that is, a state where the cassette is taken out, and FIG. 5 is a state where the cassette holding portion is located at a lower position, that is, the cassette. FIG. 6 is a schematic side view showing a state in which the slide chassis is a movable chassis, and FIG.

In a conventional cassette loading apparatus, a slide chassis 1 is attached to a fixed chassis 2 serving as a base on which a traveling system component such as a rotating drum (not shown) or a capstan (not shown) is arranged by a tape (tape). (Not shown) is slidably mounted in the direction (in the direction of arrow A) wound around the traveling system component. Further, a cassette holder 4 for holding the tape cassette 3 is moved up and down on the slide chassis 1. It is attached movably in the vertical direction (the direction of arrow B) by the cross link 5 as a means.

In the above configuration, the cross link 5
Comprises a pair of left and right X-shaped component arms 6, 7, one end of which is connected to the cassette holding portion 4.
Is fitted and attached.

A biasing spring 8 for raising the cassette holding portion 4 is stretched between one of the constituent arms 6 of the cross link 5 and the slide chassis 1, and is sufficiently provided for the constituent arm 6. By applying a rotational moment, the cassette holding section 4 can be moved to a cassette removal position.

In the cassette loading device constructed as described above, the cassette holding portion 4 is held at the cassette loading position by locking the cassette holding portion 4 by a lock mechanism (not shown). When the lock of the holding unit 4 is released, the cross link 5 operates so as to raise the cassette holding unit 4 by the urging force of the urging spring 8, and as shown in FIG. It can be moved to the take-out position.

[0008]

However, in the case of the above-described conventional cassette loading apparatus, the cassette holding section 4
Is normally held at the cassette loading position by one lock mechanism, but if the urging force of the urging spring 8 is too large,
Due to the urging force, an unlocked portion of the cassette holding portion 4 rises, and there is a problem that the cassette holding portion 4 cannot be held securely.

Thus, the urging force of the urging spring 8 needs to be set in consideration of both the lifting force of the cassette holding unit 4 and the holding force of the cassette holding unit 4. There is a problem that is very difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is intended to easily set the urging force of the urging spring to the urging force necessary for raising the cassette holding unit. It is an object of the present invention to provide a cassette loading device which can easily cope with the change of the cassette.

[0011]

In order to solve the above-mentioned problems, in a cassette loading apparatus according to the present invention, a fixed chassis on which a tape traveling system component is arranged, and a lifting / lowering means for vertically moving a cassette holding portion for holding a tape cassette. One end is attached to the elevating means, and the urging means constantly urges the cassette holding portion toward the tape removing position, and moves the tape cassette in a direction for winding the tape around the traveling system component of the fixed chassis. In the cassette loading device provided with a moving chassis to be moved, the other end of the urging means is attached to the fixed chassis.

[0012]

In the cassette loading device of the present invention, since the urging means is stretched between the elevating means and the fixed chassis, the moving chassis moves in the direction of winding the tape around the traveling system component of the fixed chassis. Accordingly, the urging force of the urging means can be reduced, and therefore, it is easy to set the urging means to the urging force necessary to raise the cassette holding unit,
This can facilitate the design of small devices.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cassette loading apparatus according to the present invention will be described below with reference to FIGS.
FIG. 1 is a schematic side view showing a state in which the cassette holding portion of the cassette loading device in the present embodiment is located at an upper position, that is, a state in which the cassette holding portion is at a cassette removal position.
Is a schematic side view showing a state in which the cassette holding portion is located below, that is, a state in which the cassette is in the cassette loading position,
FIG. 3 is a schematic side view showing a state in which a slide chassis, which is a movable chassis, has been slid to a position where the tape can travel.

In the cassette loading device of the present embodiment, one end of the biasing spring 18 is connected to one of the constituent arms 6 of the cross link 5.
And the other end is attached to a predetermined position of the fixed chassis 2.

In the cassette loading device constructed as described above, when the cassette holding section 4 is at the cassette loading position (see FIG. 2), the length of the urging spring 18 is greatly extended similarly to the above-described conventional example. However, as the slide chassis 1 slides to a position where the tape can travel (a direction in which the tape cassette is wound around the traveling system component of the fixed chassis), the length of the urging spring 18 is reduced. And the urging force of the urging spring 18 decreases.

Therefore, in a state where the slide chassis 1 reaches a position where the tape can run (see FIG. 3), the biasing spring 1
8, the urging force is sufficiently reduced, and the cassette holding section 4 can be reliably held at a predetermined position.

[0017]

Since the cassette loading device of the present invention has the above-described configuration, the moving chassis moves in the direction in which the tape is wound around the traveling system component of the fixed chassis. The urging force can be reduced, so that it is easy to set the urging means to the urging force necessary to raise the cassette holding unit, and it is possible to easily design a small device.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a state in which a cassette holding section is positioned upward in one embodiment of a cassette loading device of the present invention.

FIG. 2 is a schematic side view showing a state in which a cassette holding unit is positioned below in the embodiment of the cassette loading device of the present invention.

FIG. 3 is a schematic side view showing a state where the slide chassis is slid to a position where the tape can travel in the embodiment of the cassette loading device of the present invention.

FIG. 4 is a schematic side view showing a state in which a cassette holding unit in a conventional cassette loading device is positioned upward.

FIG. 5 is a schematic side view showing a state in which a cassette holding unit in a conventional cassette loading device is located below.

FIG. 6 is a schematic side view showing a state where a slide chassis is slid to a position where a tape can travel in an embodiment of a conventional cassette loading apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slide chassis 2 Fixed chassis 3 Tape cassette 4 Cassette holding part 5 Cross link 6 Component arm 7 Component arm 18 Urging spring

Claims (1)

(57) [Claims] 1. A fixed chassis on which a tape traveling system component is arranged; elevating means for vertically moving a cassette holding part for holding a tape cassette; one end attached to the elevating means; And a moving chassis for moving the tape cassette in a direction of winding the tape around the traveling system component of the fixed chassis. A cassette loading device attached to the fixed chassis.