JPS61177670A - Cartridge transporting mechanism - Google Patents

Abstract

PURPOSE:To prevent a loading while a cartridge is not correctly set by detecting the time when the action condition is obtained for a constant time, by the timer to count the action time of a cartridge inserting detecting switch and driving the driving motor. CONSTITUTION:When a cartridge is pushed into an inserting port of a front loading mechanism and immediately, the hands are released, a holder is returned up to the inserting position by the spring force, and a loading motor can not follow up the return speed, and then, the cartridge jumps out from the inserting position as a reaction. The timer is provided at the control circuit of the loading motor, the timer counts the action time of a cartridge inserting detecting switch and at the time of an action condition for a constant time, the loading motor is driven. Thus, while the cartridge is correctly set, the loading can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cartridge transport mechanism for a magnetic tape device.

A magnetic tape device is a device that records information on a magnetic tape or reads information recorded on a magnetic tape based on instructions from a computer or the like.

A magnetic tape wound on a reel is attached to a device and reciprocated between the two reels, during which time it comes into contact with a magnetic head to read/write information.

Recently, a magnetic tape and two reels have been made into a cartridge, which is inserted into the insertion slot of a cartridge transfer mechanism (hereinafter referred to as loading mechanism), loaded into a magnetic tape device, and the magnetic head reads/writes information on the magnetic tape. The process is performed, and when it is finished, the cartridge is returned to the insertion slot.

If the cartridge inserted into the insertion slot of the loading mechanism does not align with the reference position of the holder and the front of the cartridge, it will not be properly inserted into the magnetic tape device when loaded. Therefore, there is a need for a front loading mechanism that prevents the cartridge from being loaded if the inserted cartridge is not aligned with the reference position of the holder.

[Conventional technology]

FIG. 2 shows an external view of a conventional front loading mechanism A, and FIG. 3 is a perspective view of the holder shown in FIG.

There is a shaft 3 on which a cartridge 2 is placed and suspended as shown by the dotted line on a holder 1 shown in FIG. This shaft 3 engages with an L-shaped groove 4 shown in FIG. 2 and is movable within the groove. Further, the shaft 3 engages with the elongated hole 6 of the arm 5, and the arm 5 is moved by the rotation of the motor M shown by the dotted line via a gear described later, so that the holder 1 is loaded along the L-shaped groove 4. Ru.

The mechanism for moving the arm 5 is such that a gear 9 fixed to a motor shaft 8 meshes with a gear 10, a worm gear (not shown) coaxial with the gear lO meshes with a worm wheel 11, and a worm wheel 11 is coaxial with the worm gear 10. A gear (not shown) meshes with the gear 12, and on the shaft 13 of the gear 12 is the arm 5. The gear 12 has a notch 14 for moving the arm 5 and a loaded holder 1.
Spring 15 as an overdrive damper when stopped
There is. In addition, 16 is a switch for driving the loading motor, and 17 is a return spring, which is used to operate the push switch 16 from the position where the cartridge 2 is inserted.

Insert the cartridge 1 onto the holder 1 from the insertion opening of the front loading mechanism A as shown in Fig. 4, and push it a little further from the inserted position to align the front surface of the cartridge 2 with the reference surface of the holder 1 to align the reference position of the cartridge 2. is performed as shown in FIG. 5, and the switch 16 is operated.
The loading motor M is driven, the holder I is loaded, and the cartridge 2 is set in the magnetic tape device.

[Problem that the invention seeks to solve]

The conventional front loading mechanism A shown in FIG. 2 inserts the cartridge 2 into the holder 1 and pushes it a little further from the inserted position to align the front side of the cartridge 2 and operate the switch 16, which causes the loading motor M to operate.
The return spring 17 was required due to the structure in which it is pushed in from the insertion position.

Therefore, if you push in the cartridge 2 and immediately release your hand, the holder 1 will return to the insertion position by the force of the spring 17, and if the loading motor cannot follow the return speed, the cartridge 2 will not pop out from the insertion position due to the reaction. , as shown in Figure 6, the cartridge front reference plane F shifts and a gap E is created.
Reference pin 18 of the magnetic tape device even when loaded;
Cartridge 2 to reel boss 19. There was a problem that not only did it not fit, but it also damaged mechanical parts.

[Means for solving problems]

The above-mentioned problem is solved by the cartridge transport mechanism of the present invention, which includes a timer in the transport mechanism, uses the timer to count the operating time of the cartridge insertion detection switch, and drives the drive motor when the cartridge insertion detection switch is in the operating state for a certain period of time.

[Effect]

In other words, if the switching operation time of the loading motor when inserting a front-loading cartridge is less than a certain period of time, the motor is turned off to prevent loading when the cartridge is not properly set in the holder. It is possible to prevent the cartridge from popping out and protect the mechanism.

〔Example〕

Hereinafter, the gist of the present invention will be specifically explained with reference to the drawings.

Conventionally, when the cartridge 2 is pushed into the insertion opening of the front loading mechanism A and the hand is immediately released, the holder 1 returns to the insertion position by the force of the spring 17. If the loading motor cannot follow the return speed, the cartridge 2 recoils. Since the cartridge protrudes beyond the insertion position, the front reference surface F of the cartridge has created a gap E as shown in FIG. In the present invention, a timer is provided in the control circuit of the loading motor (see the timer 20 indicated by a dotted line in FIG. 4) so that the loading operation is not performed when the gap E is generated, and the timer 20 is used to insert the cartridge. The operating time of the detection switch 16 is counted and the operating state is maintained for a certain period of time (for example, 0°5 seconds or more).
The loading motor M is driven when the

FIG. 1 is a flowchart showing the operation of the front loading mechanism of the present invention.

Insert the cartridge 1 onto the holder l from the insertion opening of the front loading mechanism A (see Fig. 4), push it in a little further from the inserted position, and turn the switch 16 to O? JL, timer 20 is switch 16
The operating time of the motor M is measured, and the motor M is driven only after a certain period of time, for example, 0.5 seconds has passed. Return spring 1
If the cartridge 2 is returned by the force 7 and the switch 16 is operated for less than 0.5 seconds (when a gap E is created as shown in Fig. 5 and the position has shifted), the loading motor M is Not driven.

As mentioned above, if the operating time of the switch 16 of the loading motor M is less than a certain period of time, the motor will not be driven, which prevents the cartridge 2 from being loaded when it is not correctly set in the holder 1, and protects the mechanism. can be done.

〔Effect of the invention〕

As explained above, according to the present invention, a timer is provided, and the timer counts the operating time of the cartridge insertion detection switch, thereby preventing loading of the cartridge in a state where the cartridge is not correctly inserted into the holder of the loading mechanism. The mechanism can be protected.

[Brief explanation of the drawing]

Fig. 1 is a flowchart showing the operation of the front loading mechanism of the present invention, Fig. 2 is an external front view of a conventional front loading mechanism, Fig. 3 is a perspective view of the holder shown in Fig. 2, and Fig. 4 is when a cartridge is inserted. 5 is a diagram showing the position of the cartridge and the holder at the end of loading, FIG. 5 is a diagram showing the position when the cartridge is pushed in, and FIG. 6 is a diagram showing the state in which the cartridge is displaced due to the reaction of the spring. In the figure, 1 is a holder, 2 is a cartridge, 3 is a shaft, and 16 is a switch.

Claims (1)

[Claims] A transfer mechanism includes a cartridge insertion detection switch for detecting insertion of a magnetic tape cartridge, and automatically transfers the cartridge to a magnetic tape device upon detection of the cartridge insertion detection switch, wherein the operation time of the cartridge insertion detection switch is 1. A cartridge transport mechanism, comprising: a timer for counting, and the drive motor is driven when the timer detects when the cartridge is in an operating state for a certain period of time.