JP2592350B2 - Library device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a library device for an information storage medium that stores a large number of information storage media such as an optical disk cartridge or a cartridge-type magnetic tape, and takes out and stores / reproduces a required information storage medium. Two rotating plates fixed above and below a rotating shaft and rotating about the rotating shaft, respectively, with the object of improving mounting efficiency and realizing high performance, large capacity, and space saving; A rotating mechanism disposed below the rotating plate and driving the rotating shaft including a speed reducer, and a rotating drum in which a plurality of racks for storing an information storage medium are arranged along the rotating shaft direction between the rotating plates. Type medium storage unit, a medium processing unit that performs at least reproduction of the information storage medium, and transfer of the information storage medium to transfer the information storage medium between the medium storage unit and the medium processing unit In the library device of the information storage medium having an automatic transport unit for performing, the lower rotating plate, the outer peripheral portion is lowered, and a rack is disposed between the outer peripheral portion and the upper rotating plate. I do.

[Industrial applications]

The present invention relates to an information storage medium library device that accommodates a large number of information storage media such as an optical disk cartridge or a cartridge-type magnetic tape, and takes out and stores / reproduces a necessary information storage medium.

When a large amount of data is handled in an information storage device, the amount of a file increases, and a large number of information storage media for storing the file are required.

For this reason, automatic warehouse (library) devices for processing and storing a large number of information storage media have been provided on the market.

In such a library device, it is desired that the installation space is small, the system is duplicated with respect to a failure, and a completely non-stop system configuration.

[Conventional technology]

FIG. 4 is an explanatory view of the structure of a rotary drum type medium storage unit of a conventional library device. In the figure, reference numeral 1 denotes a hollow shaft rotatably provided, and 2 and 3 are fixed above and below the shaft 1. A top plate and a base plate. A plurality of racks 4 are arranged at equal intervals in the circumferential direction between the upper plate 2 and the base plate 3, and each rack 4 stores a large number of information storage media 100 such as optical disk cartridges. . A rotation mechanism 5 is provided below the base plate 3 of the shaft 1. The rotation mechanism unit 5 includes a drive motor 6 and a speed reducer 7, and the speed reducer 7 includes a worm 8 fixed to an output shaft of the motor 6.
And a worm wheel 9 fixed to the lower end 1a of the shaft 1 and meshing with the worm 8.

When transferring the information storage medium in the rotating drum type medium storage unit to and from a medium processing unit (not shown), the motor 6 is rotated by a predetermined amount so that a desired rack 4 is opposed to an automatic conveyance unit (not shown). Delivery of the desired information storage medium 100 is performed by the automatic transport unit.

The medium processing unit performs reproduction / recording of information on the supplied information storage medium.

[Problems to be solved by the invention]

However, in the above-described conventional structure, the rotating mechanism 5 is disposed below the storage unit main body (the part above the base plate 3), and the central part of the storage unit main body is wasted without being utilized.

For this reason, it has been difficult to increase the mounting efficiency of the information storage medium as a device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a library device capable of improving storage medium mounting efficiency and realizing high performance, large capacity, and space saving.

[Means for solving the problem]

In order to achieve the above-described object, the present invention includes two rotating plates fixed above and below the rotating shaft and rotating about the rotating shaft, and a speed reducer disposed below the lower rotating plate. A rotating mechanism for driving the rotating shaft, a rotating drum-type medium storing section in which a plurality of racks for storing the information storage medium are arranged along the direction of the rotating axis between the rotating plates, and at least the information storage medium. In a library device for an information storage medium having a medium processing unit for performing reproduction and an automatic conveyance unit for conveying the information storage medium and transferring an information storage medium between the medium storage unit and the medium processing unit, The lower rotating plate has a configuration in which the outer peripheral portion is lowered, and a rack is disposed between the outer peripheral portion and the upper rotating plate.

(Operation)

Since at least the speed reducer of the rotation mechanism is disposed in the center portion of the medium storage, the space conventionally required below the medium storage body for the rotation mechanism can be allocated to the information storage medium storage space. . Therefore, a rotating drum type medium storage unit having a large number of storage media and a short dimension in the height direction is realized. Further, when the medium processing unit is disposed immediately below the rotating drum type medium storage unit, the number of mounted medium processing units can be increased.

〔Example〕

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

FIG. 1 is a perspective view of the inside of the library apparatus of the present example as viewed from the front side, FIG. 2 is a perspective view as viewed from the back side thereof, in which 11 is a rotating drum type medium storage unit, 12 is a medium processing unit, and 13 Is an automatic transporter.

As shown in detail in FIG. 3, the rotating drum type medium storage unit 11 includes a hollow shaft 14 and an upper plate fixed above and below the shaft 14.
15 and a base plate 16, and a plurality of racks 17 are arranged at regular intervals in the circumferential direction between the upper plate 15 and the base plate 16. Each rack 17 has a number of information storage media 100
Is stored. The center of the base plate 16 is formed so as to protrude upward, whereby a concave portion 18 is formed in the center portion of the base plate 16. The rotating mechanism 19 for driving the rotating drum type medium storage unit 11 includes a speed reducer 20 mounted in the recess 18 and connected to the lower end of the shaft 14, and a motor 21 (first The rotation of the motor 21 is transmitted to the speed reducer 20 via the timing belt 22. FIG. 3 shows an example in which a harmonic drive manufactured by Harmonic Drive is used, and the reducer 20 has a compact outer shape, so that it can be mounted in the recess 18.

The medium processing unit 12 has a well-known structure and operation for reproducing or recording information on the supplied information storage medium 100, and is disposed below the rotating drum type medium storage unit 11.

The automatic transport unit 13 is used to store the information storage medium 100 input from the medium input port 23 in the rotary drum type medium storage unit 11, and to transfer the information storage medium 100 in the rotary drum type medium storage unit 11 to the medium discharge port 24. It is a well-known task of performing an operation of discharging the information storage medium between the rotating drum type medium storage unit 11 and the medium processing unit 12.

When a plurality of devices having such a configuration are installed, they are not shown in the figure, but are installed side by side or
The back-to-back units should be installed side by side.

〔The invention's effect〕

As described above, according to the present invention, at least the speed reducer of the rotating mechanism is disposed in the center of the rotary drum-type medium storage unit. The space of subordinates can be used. Therefore, it is possible to increase the number of information storage media to be stored and increase the number of mounted media processing units, which greatly contributes to the improvement of the performance of the library device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the inside of a library device according to an embodiment of the present invention as viewed from the front side, FIG. 2 is a perspective view of the same as viewed from the back side, and FIG. FIG. 4 is a structural explanatory view of a rotary drum type medium storage unit of the embodiment, FIG. 4 is a structural explanatory view of a rotary drum type medium storage unit of a conventional library device, where 11 is a rotary drum type medium storage unit, and 12 is a medium. A processing section, 13 is an automatic transport section, 19 is a rotation mechanism section, 20 is a speed reducer, and 100 is an information storage medium.

Claims (1)

(57) [Claims] 1. Two rotating plates fixed above and below a rotating shaft and rotating about the rotating shaft, and disposed below a lower rotating plate to drive the rotating shaft including a speed reducer. A rotating mechanism, a rotating drum type medium storing unit in which a plurality of racks for storing the information storage medium are arranged along the direction of the rotation axis between the rotary plates, and a medium processing unit for at least reproducing the information storage medium. An information storage medium library device having an automatic conveyance unit that conveys the information storage medium to transfer the information storage medium between the medium storage unit and the medium processing unit, wherein the lower rotating plate includes: A library device wherein an outer peripheral portion is lowered, and a rack is disposed between the outer peripheral portion and an upper rotating plate.