JPS605464A - Magnetic tape device - Google Patents

Abstract

PURPOSE:To facilitate easy assembling together with the reduction in size of magnetic tape device by detecting the loading and unloading stop positions of a holding member for cassette just with a single detection switch and therefore eliminating the actuation timing control of both the switch and a driving means after assemling. CONSTITUTION:When a cassette is loaded, a motor 6 starts its revolutions to revolve a driving wheel 9 clockwise and a rotary center shaft 39 moves down along the vertical part of a hook groove 40. Thus a cassette is moved down in a body with shift members 34 and 35 and then loaded to a prescribed position. Then a reel driving disk is fitted to a reel set in the cassette. The conduction part formed on a substrate 21 is changed to an ON state from an OFF state, and the revolution of the motor 6 is stopped by a microcomputer. Thus a cassette loading procedure is through. A rotary/slide type switch which stops the revolution of the motor 6 consists of a slider formed in a body on the substrate 21 and attached to an intermediate gear 20 which revolves synchronously with said conduction part and the wheel 9. Such a switch has high accuracy for its actuating position. In such a way, the actuation timing control of both the switch and the wheel 9 after a magnetic tape device is assembled is eliminated.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is directed to "7--7 TI-G and VIDEO TECHNOLOGY".
The present invention relates to a magnetic tape device that can be used for - files, etc.

Structure of the conventional example and its problems In recent years, magnetic tape has been wound on a reel, pulled out from a built-in cassette, and attached to a rotating magnetic head drum. In particular, the so-called slot incubator VTR, in which the cassette is inserted from the front opening of the device, is generally preferred due to its efficiency in utilizing the space on one side of the device. Below, we will explain the conventional slot-to-intive VTR with reference to the drawings.First, we will explain the operation when loading a cassette. When inserting the cassettes 1 to 4 in the direction of the arrow approximately parallel to the main board 3, the cassette 4 hits the switch 5, and the cassette 5
is activated, and the motor 6 shown in FIG.
During driving, 9 rotates clockwise in FIG. 2. The drive wheel 9 rotates in the horizontal direction to transfer the cassette holding member 7 in the horizontal direction, so that the cassette 1-4 is moved to the position shown by the two-dot chain line in FIG. , and is transferred in the direction B and mounted at a predetermined position on the main board 3 as shown in FIG. In this state, the reel stand 8 rotatably arranged on the main board 3 and the reel (not shown) in the cassette 4 are engaged. At this time, the drive vehicle 9
The convex part 10 provided in () hits the switch 11 attached to the side, and the state shown in Fig.
1 is activated, the solar radiation of the motor 6 stops, and the device is completed. U
1), the motor 6 rotates in the opposite direction to the insertion portion, and the Karen [-4] is transported along a path opposite to the above-described operation, returning to the state shown in FIG. 1A.

At this time, the convex portion 10 provided on the drive wheel 9 hits the switch 12, and the state shown in FIG. The control 911 of the driving means described above is to input the turning on of each switch into a programmed microcomputer (not shown in the figure).
The microcomputer is configured to ignore the switch operation when it is not needed.

With the above configuration a5, there is a switch 11 for controlling the device 71 of the power hitter 4 and the completion of the take-out operation and the driving means.
．． Adjusting the timing of i2 operation (11 magnetic)
This is important for 2-build devices. However, the conventionally used 1liIIIlI switches are two leaf-type switches 11 and 12, and the operating position accuracy and
There were problems with installation accuracy, etc. For this reason, there was a problem in adjusting the positions of the switches 11 and 12 after assembling the car and adjusting the operating timing of the drive wheel 9.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, and provides a magnetic tape mount for a slot incubator that does not require adjustment of the position of a control switch and is easy to assemble.

Structure of the Invention In order to achieve the above object, the magnetic j-] device of the present invention comprises:
The magnetic tape is wound on a reel and the current flowing inwardly R' is transferred to a first right direction substantially parallel to the main board of the device and a second direction 10v above and below the main board to transfer the current to the currents 1 to 1. a holding member for holding the force hit; a driving means for driving the holding member by rotational movement; and a driving means for driving the holding member by rotational movement; It consists of a detection means for detecting the rotational phase of the drive means, and a control means for activating and stopping the drive means.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, a first embodiment shown in FIGS. 3 to 8 will be described. In FIG. 6, the rotation of the motor 6 fixed to the side of the room 13 placed on the board at J3 is controlled by a small pulley 14.
, Bell! ~15, human pulley 16, 11, 1A-
The signal is transmitted to the drive wheel 9 via the wheel 18, small gear 19, and intermediate gear 20. Intermediate gear 20 and this intermediate gear 20
The lower side of is constructed as shown in FIG. That is, a slider 22 made of an elastic metal material is disposed inside the intermediate gear 20 made of an insulating material, and this slider 22 is provided with three pairs of legs 23, 24, and 25. It is being taken. Further, on the upper surface of the substrate 21 made of an insulating material, three sets of independent conductive parts 21 having different lengths are formed by etching or printing.
3.27.28 is provided, and the shaft 29, which is attached to the frame 13, is connected to the shaft 29 by a ring 30 or the like.
The board 21 is prevented from rotating by a protrusion 31 provided on the frame 13 for determining the position γ.

Also, one part 23 of three sets of sliders 22 fixed to the intermediate gear 20
．． 24 and 25 are three sets of conductive parts 2 provided on the upper surface of the substrate 21.
By rotating and sliding G, 27, and 28J-, a rotary switch with 1 circuit and 2 contacts, with conductive 8+S2G as a common terminal, is constructed. A part of the driving wheel 9 is a convex portion 33 having an elongated hole 32 as shown in FIG.

The portion shown in FIG. 6 with the members on the front side removed from the frame 13 is the same as a conventional magnetic tape device, and is constructed as shown in FIG. 3. That is, on the opposite side of the frame 13 from the drive wheel 9, there is a first unit including the Karen 1 to the holding member 7, which are integrated into one body.
A moving part shrine 34 and a second moving member 35 are provided. A rack 3J37 is formed on the first moving member 34 and the second moving member 35 at a position facing the people, and the rotation center shaft 39 of the pin A 38 that engages with these racks 36 and 37 is driven by the aforementioned drive. The elongated hole 32 of the wheel 9 is engaged. The rotation center shaft 39 engages with the guide key cover 4 ( ) of the frame 13 and the elongated hole 41 of the first moving member 34 .

The first moving member 34 and the second moving member 35 are constructed so that they can move relative to each other only in the direction of the arrow Ah or in the opposite direction to the arrow. Pin 42 formed on second moving member 35
A roller 43 rotating around the frame 13 engages with an elongated hole 44 formed in the frame 13, and when the first moving member 34 and the second moving member 35 move up and down integrally as shown in FIG. The inner surface on the opposite side of the J0 frame 13 also has a structure substantially similar to that shown in FIG. 3, so a description thereof will be omitted. As shown in FIG. 5, a bush type switch 5 is attached to the upper surface of the frame 13.

The operation of the magnetic tape device of this embodiment described above will now be described.

As shown in Figure 5, when the cassette 4 is inserted into the outer box 1 from the stepped cassette insertion slot 2 approximately parallel to the main board 3, the cassette 4 hits the switch 5 and the motor 6 starts to rotate. The wheel 9 rotates clockwise, and the rotation center shaft 39 shown in FIG. 3 also begins to move in the direction of the arrow in FIG. 5. When the drive wheel 9 rotates and the rotation center shaft 39 moves in the direction of the arrow, the first moving part 34 moves in the direction of the arrow twice the amount of movement of the rotation center shaft 39 because the pinion 38 is engaged with the racks 36 and 37. move in the direction. When the drive wheel 9 further rotates, the rotation center shaft 39 descends along the vertical part of the key groove 40, so the first moving member 34 and the second moving member 35 are integrally moved [
- The unloading collars 1 to 4 are installed at predetermined positions of the device as shown in FIG. 5C, and the reel stand 8 and the reels in the collars 1 to 4 are engaged. At this time, the relationship between the drive wheel 9 and the intermediate gear 20 becomes the state shown in FIG.
(not shown), the motor 6 rotates 11 times, and the cassette loading operation is completed. Next, the operations for taking out the curry 1 will be explained. When the switch I/retrieval switch (f, not shown) provided on the device is activated, Tanabata 6 rotates in the opposite direction to the direction at which it was inserted, and Carets 1-4 are transferred in the direction opposite to the direction at which it was inserted. The state shown in Figure 5 is the same. At this time, the relationship between the driving wheel 9 and the intermediate gear 20 is as shown in FIG. The motor 96 stops rotating, and the cassette ejecting operation is completed.

As described above, according to this embodiment, the switch that stops the rotation of the motor 6 is formed on the substrate 21, and the conductive parts 2G, 2
7. Attached to the intermediate gear 20 that rotates in synchronization with the drive wheel and the drive wheel
The sliding switch provides precise operating position, eliminating the need to adjust the operating timing of the drive wheel 9 and the switch operating timing when assembling the magnetic device.

In addition, this rotary and sliding type switch can be mounted on a printed circuit board 45 for mounting a connector and a transistor (not shown) for detecting the Arp termination, as shown in Fig. 9, if necessary. A gear 4 in which the conductive parts 2G, 27, 28 are directly formed, and the slider 22 similar to the above is removed
G and the inspector set the rivet 47 and put J on the opening to take it.
The conductive portions 26, 27, and 28 can be formed directly up to the connector mounting position, and as in the case described above, an inexpensive rotary and sliding switch with high 'cL accuracy can be obtained.

The effects of the invention exceed the effects of the invention.
In addition to being able to detect the installation and ejection stop positions of the BJJ holding part with a single detection switch, there is no need to adjust the operation timing of the drive means and the switch operation timing after assembling the magnetic 7--/equipment. (You can easily and inexpensively obtain a small magnetic Arp device.

[Brief explanation of drawings]

Figures 1a and 1b are side views of essential parts showing the cassette loading operation in a conventional slot ink drive device;
Figure 2 a and b show the same magnetic arp i'! Iti! ? FIGS. 3 to 8 show the first embodiment of the present invention, and FIGS. 3 a to C are a plan view of the human IZQ section, a side view of the main parts,
4 is a sectional view of the main part, Fig. 5 a-C is an explanatory diagram of the cassette mounting operation, Fig. 6 is a side view of the drive section, Fig. 7 shows the construction of the switch section, and a is a plan view of the board, l) is a sectional view showing the relationship between ujk and the intermediate gear, C is a perspective view of the intermediate gear and slider, Figures 8a and b are explanatory diagrams of the operation of the switch, and Figure 9 is It is a side view of the drive part in other Example of this invention. "',,l"',,exterior box, 2...ht? Insert cut [1, 3...Main board, 4...Cullet, 5...
・Switch, 6... Motor, 7... Curtain 1 to holding member, 8... Reel stand, 9... Driving, 13...
- Frame, 14... Small pulley, 15... Belt,
16...Pulley, 17...Thumb, 18...
19... Small gear, 20... Intermediate gear, 21... Board, 22... 10 mover, 23,2
4.25... Leg part, 2G, 27.28... Conductive part, 29... Shaft, 32... Elongated hole, 33... Convex part, 3
4... First moving member, 35... Second moving member, 36
．． 37...Rack, 38...Binion, 39...
Rotation center axis, 40...key groove, 41...elongated hole, 42
...Bin, 43...Roller, 44...Elongated hole, 45
...pudding 1~star plate, 4G...gear, 47...tack agent Yahiro Morimoto Figure 1 [a) δ 3 Figure 4 Figure 5 (d) ζ J Figure 6 Figure 7 Figure (d) Cb) ((1)

Claims (1)

[Claims] 1. Move the force cellar 1 to a predetermined position so as to transport a cassette containing a magnetic arp wound on a reel in a first direction substantially parallel to the main board of the device and in a second direction above and below the first board. A retaining member for holding the cullet, a driving means for driving the holding member by rotational movement, and a driving means for rotating the driving means by rotating in synchronization with the driving means. A magnetic tape device comprising: a detection means for detecting a dynamic phase; and means for activating (1) a closing drive means;