JPH0363957A - Automatic cassette exchanging device - Google Patents

Abstract

PURPOSE:To smoothly insert a compact cassette even when the cassette is pushed in only by pawls at the time of cassette insertion by providing the pawls, which vertically sandwich and hold the end parts of the cassette, and a driving means to drive these pawls. CONSTITUTION:In the case of the compact cassette, pawls 3 and 4 hold the compact cassette 2 and afterwards, the pawls are moved to a position a relative to a cassette case 1 by a driving means 6. Next, the pawls 3 and 4 are turned to a position b by the driver of a supporting pedestal 5 and the compact cassette 2 is separated. Next, in that state, the pawls 3 and 4 push the compact cassette 2 into a position c. At such a time, even when only the pawl 4 is abutted to the compact cassette 2 according to the relation of fitting position accuracy for the pawls 3 and 4, right and left rotary moments are not generated and the cassette can be smoothly pushed into the position c since arrow force is applied to the compact cassette 2 in the part including the part of a push-in part 4a as well. Then, it is completed to mount the compact cassette 2. Thus, even when two kinds of large and small cassettes are used, the both cassettes naturally and smoothly are inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic cassette exchange device used in broadcasting stations and the like.

BACKGROUND OF THE INVENTION An automatic cassette exchange device will be described below with reference to the drawings. Figure 3 is a plan view of the cassette tape loading section of a conventional automatic cassette changing device when a large cassette is loaded;
5 and 5 are side views of the gap, FIG. 6.9 is a plan view of the gap when a small cassette is attached, and FIG. 7.8 is a side view of the gap.

In the figure, reference numeral 1 denotes a cassette case in which cassettes are stored, and is attached to a frame (not shown) of an automatic cassette exchange device. Numerals 3 and 8 are claws for grasping the small cassette 2 or the large cassette 7 from above and below, and are attached to the support base 5 and rotated around a fulcrum 9. Reference numeral 5 denotes a support base configured to drive the claws 3 and 8 up and down, and is attached to drive means 6 (the configuration is not shown) for moving the support base 5 in three axes directions perpendicular to each other. 10 is a cassette pushing portion of the claw 8. The drive means 6 is attached to a frame (not shown) of the automatic cassette exchanger.

The operation of attaching a cassette tape to a cassette case in the automatic cassette exchange apparatus constructed as described above will be described below. First, in the case of a large cassette, the claws 3 and 8 grip the large cassette 7 as shown in FIGS. position, and then the pawls 3 and 8 are rotated by the drive device (not shown) of the support base 5 to the position shown in FIG. 6, the large cassette 7 is moved in the cassette insertion direction, and finally the large cassette 7 is inserted to the position shown in FIG. 5, and the installation of the large cassette 7 is completed.

Next, in the case of a small cassette, the claws 3 and 8 grip the small cassette 2 as shown in FIGS. 6 and 7, and then the drive means 6 moves the cassette case 1 to Then, the claws 3 and 8 are rotated by the drive device of the support base 5 to the position shown in FIG. direction, and finally small cassette 2
is inserted to the position shown in FIG. 8, and installation of the small cassette 2 is completed.

Problem to be Solved by the Invention However, in the above configuration, when inserting a small cassette, due to the mounting accuracy of the claws 3 and 8, the small cassette 2 cannot be pushed in only by the pushing part 10 of the claw 8, as shown in FIG. It may occur. At that time, as shown in FIG. 9, since the pushing part 10 is located closer to the right end than the center of the small cassette, a moment 11 is generated in the cassette 2 when pushing it in, so that the cassette moves counterclockwise. Rotate. Therefore, there is a problem in that the cassette collides with the wall of the cassette case 1, and the cassette may not advance further in the insertion direction due to the reaction force of the pressing force indicated by the arrow 12.

In view of the above-mentioned problems, the present invention has provided the claw 8 when inserting a small cassette.
To provide an automatic cassette exchange device which can be inserted smoothly even when pushed in with a chisel.

Means for Solving the Problems The present invention comprises a cassette case for storing cassettes of two sizes, large and small, containing magnetic tapes, and a device main body for recording and reproducing the magnetic tape of the cassette. An automatic cassette exchange device for pulling out or inserting the cassette between the cassette and the cassette, the device having a protrusion extending in a direction perpendicular to the cassette insertion direction and extending toward the reference surface side, the end of the cassette being inserted into the cassette It is characterized by having a claw that grips the end portion by pinching it from above and below, and a driving means that drives the claw.

Operation The present invention has the above-described configuration, so that when a small cassette is pushed in, even if the small cassette is pushed in by one claw on either the upper or lower claw, the pushing part of the claw contacts the front surface of the cassette and is located at least in the center. Therefore, no rotational moment is applied to the cassette, and the cassette can be inserted easily and smoothly.

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

FIG. 1 is a plan view of a cassette tape loading section of an automatic cassette changing device according to an embodiment of the present invention when a small cassette is inserted, and FIG. 2 is a side view of the intermediate section. In the figure, 1 is a cassette case, 2 is a small cassette, 3 is a claw, 5 is a support stand,
6 is a driving means, and 9 is a fulcrum, which is the same as the conventional structure shown in FIG. 4 is a lower claw, and 4a is a pushing part of the claw 4, which projects in a direction perpendicular to the cassette pushing direction.

The mounting configuration of 4 is the same as the claw 8 in FIGS. 3 and 4.

The operation of the automatic cassette exchange device configured as described above will be described below. In the case of inserting a small cassette, the claws 3 and 4 grasp the small cassette 2 as shown in FIG. 1, and then are moved by the driving means 6 to the relative position shown in FIGS. Then, the claws 3 and 4 are rotated by the driving device of the support base 5 to the position shown in FIG. 2, and the small cassette 2 is released. Next, in this state, the claws 3 and 4 push the small cassette 2 to the position shown in Fig. 2C, but at this time, due to the mounting positional accuracy of the claws 3 and 4, only the claw 4 is in contact with the small cassette 2. Even if the small cassette 2 is not there, the force of the arrow is applied to the small cassette 2 at the portion including the push-in portion 4a as shown in FIG. 1, so that it can easily reach the position shown in FIG. The small cassette 2 is pushed in, and the installation of the small cassette 2 is completed.

Although this embodiment has described the effect when inserting the small cassette 2 into the cassette case 1, this is not limited to the case when inserting the small cassette 2 into the cassette case 1;
A similar effect can be obtained when inserting the small cassette 2 into a cassette (not shown). Furthermore, although the arrangement of the claws 3 and 4 shown in FIGS. 1 and 2a is such that the claw 3 is on the top and the claw 4 is on the bottom, this is not limited to the above arrangement; the claw 3 is on the bottom and the claw 4 is on the bottom. A similar effect can be obtained even when

As described above, according to this embodiment, when inserting a small cassette,
Even if the cassette is pushed in with only one of the upper and lower claws, a protrusion perpendicular to the insertion direction is installed on the pushing part of the claw, and as it pushes the center of the front of the cassette, no moment is generated on the small cassette. It can be inserted easily into the body.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when inserting a small cassette in an automatic cassette exchange device that can insert two types of cassettes, even if it is pushed in by only one side of the upper and lower claws, Since a protrusion in the direction perpendicular to the insertion direction is arranged in the pushing part and pushes the center of the front of the cassette, an excellent effect can be obtained in that the small cassette can be pushed into the small cassette without generating a moment. Therefore, in the automatic cassette exchange device of the present invention, even if two types of cassettes are used, both large and small cassettes can be inserted smoothly and easily.

[Brief explanation of drawings]

Fig. 1 is a plan view of a cassette tape loading section when a small cassette is inserted in an automatic cassette changing device according to an embodiment of the present invention, Fig. 2 a - d are side views of the same part, and Fig. 3 is a conventional cassette automatic changing device. A plan view of the cassette tape loading section of the loading device when a large cassette is loaded, FIGS. 4 and 5 are side views of the same section, FIGS. 6 and 9 are a plan view of the same section when a small cassette is loaded, and FIGS. Figure 7. FIG. 8 is a side view of the same part. l...Cassette case, 2...Small cassette, 3.4...Claw, 4a...Claw 4
Pushing part, 5...Supporting stand, 6...Driving means, 7...Large cassette, 8...Claw, 9... Fulcrum, 10... Pushing portion of claw 8, 11... Moment, 12... Pushing force.

Claims (1)

[Claims] A cassette case for storing cassettes of two sizes, large and small, containing magnetic tapes, and an automatic cassette exchange device for pulling out or inserting the cassettes from a VTR for recording and playing back the magnetic tapes of the cassettes, the device comprising: The cassette has a protrusion extending in the vertical direction and toward the reference surface, and includes a claw that grips the end of the cassette by sandwiching it from above and below the end of the cassette, and a driving means for driving the claw. Features an automatic cassette exchange device.