JP2969660B2 - Automatic cassette changer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cassette changing apparatus used in a broadcasting station or the like.

2. Description of the Related Art Hereinafter, an automatic cassette changing apparatus will be described with reference to the drawings. Fig. 3 is a plan view of the cassette tape mounting portion of the conventional cassette automatic exchanging device when a large cassette is mounted, Figs. 4 and 5 are side views of the same portion, and Figs. FIGS. 7 and 8 are side views of the same part.

In the drawing, reference numeral 1 denotes a cassette case for accommodating a cassette, which is attached to a frame (not shown) of the automatic cassette changing device. Reference numerals 3 and 8 denote claws for gripping the small cassette 2 or the large cassette 7 from above and below. The claws 3 and 8 are attached to the support base 5 and rotate about a fulcrum 9. Reference numeral 5 denotes a support table configured to drive the claws 3 and 8 up and down, and is attached to driving means 6 (the configuration is not shown) for moving the support table 5 in three axial directions perpendicular to each other. Reference numeral 10 denotes a cassette pushing portion of the claw 8. The driving means 6 is mounted on a frame (not shown) of the automatic cassette changing device.

The operation of attaching the cassette tape to the cassette case in the automatic cassette exchange apparatus configured as described above will be described below. First, in the case of a large cassette, the claws 3 and 8 are gripped by the large cassette 7 as shown in FIGS. 3 and 4, and then the driving means 6 moves the claw 3 and the claw 8 relative to the cassette case 1 as shown in FIGS. Then, the pawl 3 and the pawl 8 are rotated by the driving device (not shown) of the support base 5 to the position shown in FIG. 5 to release the cassette 7, and in this state, the support base 5 is driven by the driving device. 6, the large cassette 7 is finally inserted to the position shown in FIG. 5, and the mounting of the large cassette 7 is completed.

Next, in the case of a small cassette, as shown in FIG. 6, it is inserted at a position deviated in the left-right direction with respect to the large cassette.
The claw 3 and the claw 8 hold the small cassette 2 as shown in FIGS.
6 and 7, the claw 3 and the claw 8 are then moved by the driving device of the support base 5 to the eighth position.
The cassette 7 is pivoted to the position shown in the figure to release the cassette 7, and in this state, the support 5 is moved in the cassette insertion direction by the driving device 6, and the small cassette 2 is finally inserted to the position shown in FIG. The mounting of the cassette 2 is completed.

Problems to be Solved by the Invention However, in the above configuration, when the small cassette is inserted, the small cassette 2 is pushed only by the pushing portion 10 of the claw 8 due to the mounting accuracy of the claw 3 and the claw 8 as shown in FIG. May be rare. At that time, as shown in FIG. 9, since the pushing section 10 is located closer to the right end than the center of the small cassette, a moment 11 is generated in the cassette 2 at the time of pushing, so that the cassette moves counterclockwise. Rotate. Therefore, there is a problem in that the cassette may hit the wall of the cassette case 1 and not proceed further in the insertion direction due to the reaction force of the pressing of the arrow 12.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an automatic cassette exchanging device which can be smoothly inserted even when the small cassette is inserted with only the claw 8 when the cassette is inserted.

Means for Solving the Problems The present invention has a pushing portion capable of pushing both the front center of the large cassette and the front center of the small cassette,
It has a claw for grasping each cassette from above and below, and a driving means for driving the claw.

According to the present invention, when the small cassette is pushed by the above-described structure, the pushing portion is in contact with the front surface of the cassette and is located at least at the center, so that no rotational moment is given to the cassette, and the cassette can be smoothly inserted smoothly. It is what is done.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a cassette tape mounting portion when a small cassette is inserted in an automatic cassette changing apparatus according to an embodiment of the present invention, and FIG. 2 is a side view of the same portion. In the drawing, 1 is a cassette case, 2 is a small cassette, 3 is a pawl, 5 is a support base, 6 is a driving means, and 9 is a fulcrum, which is the same as the conventional configuration shown in FIG. Reference numeral 4 denotes a lower claw, and 4a denotes a pressing portion of the claw 4, which protrudes in a direction perpendicular to the cassette pressing direction. The mounting configuration of 4 is the same as the claw 8 in FIGS. 3 and 4.

The operation of the automatic cassette changing device configured as described above will be described below. When inserting a small cassette,
After grasping the small cassette 2 of the claws 3 and the claws 4 as shown in FIG.
Then, the pawl 3 and the pawl 4 are rotated to the position shown in FIG. 2B by the driving device of the support table 5 to release the small cassette 2. Next, in this state, the pawls 3 and 4 push the small cassette 2 to the position shown in FIG. 2C. At this time, however, only the pawl 4 hits the small cassette 2 because of the positional accuracy of the pawls 3 and 4. Even if the small cassette 2 is not provided, since the force of the arrow is applied to the small cassette 2 at the portion including the pushing portion 4a as shown in FIG. 1, the right and left rotating moment does not occur and the small cassette 2 can reach the position shown in FIG. 2c without difficulty. It is pushed in, and the mounting of the small cassette 2 is completed.

In this embodiment, the effect at the time of inserting the small cassette 2 into the cassette case 1 has been described. However, the storage section for storing the cassette is not limited to the case of the cassette case 1, and is not limited to the case of the VTR (not shown). Similar effects can be obtained when the small cassette 2 is inserted. The arrangement of the claws 3 and the claws 4 shown in FIGS. 1 and 2a is such that the claws 3 are on the upper side and the claws 4 are on the lower side. The same effect can be obtained even when

As described above, according to this embodiment, when a small cassette is inserted, even if the cassette is pushed in with only one of the upper and lower claws, a projection perpendicular to the insertion direction is provided at the pushing portion of the nail, and the cassette is inserted. Since the front center is pressed, the cassette can be inserted into the small cassette without generating a moment, and the insertion can be performed without difficulty.

When a large cassette is inserted, as in the case of FIG. 3, the center of the front surface of the cassette is pushed, so that a reasonable insertion is performed.

Effect of the Invention As described above, according to the present invention, when a small cassette is inserted by a cassette automatic exchange device capable of inserting two types of cassettes, large and small, the pushing portion presses the center of the front surface of the cassette. An excellent effect of being able to be pushed in without generating cracks is obtained. Therefore, in the cassette automatic exchange device of the present invention, even if two types of cassettes, large and small, are used, both can be inserted smoothly without difficulty.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a cassette tape mounting portion when a small cassette is inserted in an automatic cassette changing apparatus according to an embodiment of the present invention, and FIGS. FIG. 3 is a plan view of a cassette tape mounting portion of the conventional automatic cassette mounting device when a large cassette is mounted, FIGS. 4 and 5 are side views of the same portion, and FIGS. 6 and 9 are small cassettes of the same portion. FIGS. 7 and 8 are side views of the same part when mounted. 1 ... Cassette case, 2 ... Small cassette, 3,4 ...
Claw, 4a: Pushing portion of claw 4, 5: Support base, 6: Driving means, 7, Large cassette, 8, Claw, 9, Support point, 10
... Depressed part of claw 8, 11 ... Moment, 12 ... Pressing force.

Claims (1)

(57) [Claims] 1. A cassette automatic exchange device for inserting a large cassette and a small cassette inserted at a position deviated in the left-right direction with respect to the large cassette into a cassette accommodating portion, wherein a front center of the large cassette and the small cassette are inserted. An automatic cassette exchanging device, comprising: a pushing portion capable of pushing any of the front center of the cassette; a claw for grasping each cassette from above and below; and a driving means for driving the claw.