JPS6180547A - Tape draw-out mechanism - Google Patents

Abstract

PURPOSE:To stabilize recording/reproducing operation by providing a stopper enforcing the position in contact with a tape draw-out member when it is in the position where a cartridge is loaded or ejected to said member and a rubber being an elastic body to one side of a link slot. CONSTITUTION:The state at cartridge loading/ejection and recoding/reproduction is shown in figure respectively. The tape draw-out member 20 is provide with the stopper 21 in contact with the member 20 and enforcing the position when it is in the position at cartridge loading/ejection and the rubber 22 being an elastic body provided to one side of the link slot 8. A roller 16 presses the rubber 22 to deform the rubber 22 at cartridge loading/ejection and its force is exerted to the stopper 21 through an arm 9, then the position of a tape roller 13 is decided by the stopper 21. Since the position of a tape roller 13 is decided by the position of the roller 16, when the position of a drive shaft 12 is adjusted, the accurate position of the tape roller 13 is decided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cartridge type recording/reproducing machine, and in particular, to a cartridge-type recording/reproducing machine, in which a tape is pulled out from a tape cartridge, and a tape running path is created such that the tape is brought into contact with a fixed head via a fixed tape guide. The present invention relates to a tape pull-out mechanism for recording and reproducing data.

The cartridge type recording/reproducing machine has a supply reel boss 1 and a take-up reel hub 2 connected to a reel motor (not shown), as will be described later, for example, as shown in FIG. The tape 4 is pulled out, and a tape running path is formed through the fixed guide 5 to contact the fixed head 6 as shown in FIG. 4, and recording and reproduction of the magnetic tape 4 is performed.

The above-mentioned tape running path is formed by a tape pull-out mechanism 7, which includes an arm 9 having a link a8 in the center, one end of a crank plate 10 engaged with the link groove 8, and a crank plate 10 that is connected to the arm 9. Connect the other end of the plate 10 to the motor 1
By fixing the drive shaft 12 to a first-class drive shaft 12 and rotating the drive shaft 12, the tape pull-out member 14 having the tape roller 13 on the arm 9 is swung about the fulcrum 15 of the arm 9, and the tape cartridge is removed. 3 to magnetic tape 4
is brought out.

When installing the tape cartridge 3 in a recording/reproducing machine, the position of the tape roller 13 of the tape pull-out member 14 during installation and ejection of the tape cartridge should be adjusted so that the tape 4 is not damaged by the tape roller 13 or cannot be installed. It is desirable that the position be in a suitable position.

Further, during recording and reproduction, it is desirable that the tape roller 13 be positioned so that the tape wrapping angle around the tape roller 13, the tape wrapping angle around the fixed guide 5, etc. do not change on the tape running path formed by pulling out the tape from the tape cartridge 3. .

[Conventional technology]

FIG. 3 shows the cartridge mounting and ejecting positions, and FIG. 4 shows the respective positions during recording and playback. In the conventional tape pull-out mechanism 7 of a cartridge type recording device, a pair of tape pull-out members 14 are attached to a tape roller 13 at the tip of an arm 9. A link 8 is provided at the center of the arm 9 to engage with a crank plate 10, which will be described later.A fulcrum 15 is provided on the opposite side of the arm 9 from the tape roller 13, and the tape pull-out member 14 is attached to the arm 9. It is designed to swing around a fulcrum shaft 15. On the other hand, connect one end of the crank plate 10 to the motor shaft 12.
A roller 16 is held on a shaft provided at the other end, and the roller 16 is engaged with the link groove 8 to constitute a driving device for the swinging slider crank mechanism.

When pulling out a tape from the state shown in FIG. 3 in which a tape cartridge is installed in a cartridge-type recording/reproducing machine, the tape is initially placed as shown in the figure, and the tape pull-out member 14
The tape roller 13 is located in the pull-out groove 17. When the crank hand 10 is rotated in the direction of the arrow by the drive of the motor rotation shaft 12, the tape pull-out member 14 swings about the fulcrum 15, and the tape is pulled out by the tape roller 13. A sensor 18 is provided to stop the tape drawing member 14 so that the drawn tape comes into contact with the fixed head 6 via the fixed guide 5 to form a tape path for recording and reproduction.

The sensor 18 detects the tape pull-out member 14, the drive of the crank plate 10 is stopped, and the state shown in FIG. 4 is maintained. Also, when the tape pull-out member 14 is restored to its original position in the cartridge and stopped, the sensor 19 is used to stop the rotation of the crank plate 10.

[Problem that the invention seeks to solve]

The tape roller 13 is positioned in two positions: the position shown by the solid line in FIG. 3 (state B when the cartridge is installed and ejected) and the position shown by the solid line in FIG. 4 (state during recording and playback). is being adjusted.

This is because if the position of the tape roller 13 shown by the solid line in FIG. This is because there is a risk that it will not fit properly.

Otherwise, at that time, the tape roller 13 may come into contact with the tape and damage the tape.

Furthermore, if the tape roller 13, indicated by the solid line in FIG. This is because the frictional force between the tape and these guides is different, which may adversely affect the recording and reproducing characteristics.

The positions of the two tape rollers 13 mentioned above are determined by the fulcrum 15 of the arm 9 and the position of the drive shaft 12, so if you adjust the position of one of them and then adjust the other position, the adjustment will be made first. There is a problem in that it is difficult to accurately adjust both positions because the positions are out of order.

[Means for solving the problem] The above problem is solved by providing an elastic body on the side opposite to the drive shaft of the crank plate of the link groove of the tape pull-out member of the cartridge type recording/reproducing machine, and further improving the installation and ejection state of the tape cartridge. This is achieved by the tape drawing mechanism of the present invention, which is characterized in that it is provided with a stopper for regulating the arm position.

[Effect]

That is, an elastic body is provided on the side opposite to the drive shaft of the clamp plate of the link groove of the tape pull-out member, and a stopper is also provided to regulate the arm position when the tape cartridge is installed or ejected, thereby making it possible to control the tape roller during recording and playback. The tape roller presses and deforms the elastic body to correct the misalignment caused by adjusting the position of the cartridge and the position of the cartridge when it is mounted and ejected at different parts (the position of the fulcrum 15 of the arm 9 and the position of the drive shaft 12). The position of the tape roller is determined by the stopper.

〔Example〕

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

FIG. 1 shows the position of an embodiment of the present invention when the cartridge is mounted and ejected, and FIG. 2 shows the position when recording and reproducing. It should be noted that, as shown in the drawings, when the pull-out member 20 is in the cartridge loading/unloading position, a stopper 21 and a rubber 22, which is an elastic body, are provided on one side of the link groove 8 and a stopper 21 that comes into contact with the pull-out member 20 to force the position. That is what we are doing.

In FIG. 1, the roller 16 pushes the comb 22 and the rubber 22
Since the force is applied to the stopper 21 through the arm 9, the stopper 21 deforms the tape roller 1.
The position of number 3 will be determined. (The fulcrum shaft 15 of the arm 9 is fixed.) Furthermore, since the position of the tape roller 13 during recording and reproduction in FIG. 2 is determined by the position of the roller, it is possible to accurately adjust the position of the drive shaft 12. It is possible to set the tape roller 13 at a suitable position.

The reason for the above configuration is that, for example, the position of the tape roller 13 when the cartridge is installed and ejected is adjusted by the motor shaft 12, and the position of the tape roller 1 during recording and playback is adjusted.
It is also possible to configure the third position to be adjusted using a stopper 21. During recording and reproduction, the tape contacts the tape roller 13 and is under tension, so the roller 16 is moved to position the stopper 21 at this time.
Link in contact with? This is because if rubber is provided on one side of the fp 8 (the side opposite to the embodiment), the relatively soft rubber will be deformed by the tape tension, making the position of the tape roller 13 unstable. Therefore, the position of the tape roller 13 is determined by bringing the relatively hard roller 16 into contact with the link groove 8. In this respect, since the tape 4 is not in contact with the tape roller 13 when the cartridge is attached and ejected, the position of the tape roller 13 does not move even through the rubber 22.

With the above configuration, even if the position RmN of the tape roller 13 during recording and playback and the position of the tape roller 13 when installing and discharging a cartridge are adjusted in separate parts, they can be easily and accurately adjusted. .

(Effects of the Invention) As explained above, according to the present invention, when the tape pull-out member is in the cartridge mounting and ejecting position, the stopper that contacts the tape pull-out member and forces the position, and the elastic rubber on one side of the link groove. By providing this, it is possible to easily and accurately adjust the position of the tape roller both during recording and playback and when loading and unloading the cartridge, allowing stable recording and playback operations and eliminating the risk of the tape roller hitting the cartridge or tape when loading and unloading the cartridge. It disappears.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the position of an embodiment of the present invention when the cartridge is installed and ejected, Fig. 2 is a plan view showing the position during recording and playback, and Fig. 3 is a conventional cartridge installation and ejection of a cartridge-type recording device. FIG. 4 is a plan view showing the position during recording and reproduction of FIG. 3. FIG. In the figure, ■ is a supply reel, 2 is a take-up reel, and 3 is a tape cartridge. 4 is a magnetic tape, 5 is a fixed guide, 6 is a fixed head, 8 is a link groove, 9 is an arm, IO is a crank plate, 11 is a motor, 12 is a drive shaft, 13 is a tape roller, 15 is a fulcrum, 16 is a roller , 17 is a pull-out groove, 18 and 19 are sensors, 20 is a tape pull-out member, 21 is a stopper, and 22 is a rubber. ? -2rl:j

Claims (1)

[Claims] The arm has a link groove in the center, one end of a crank plate is engaged with the link groove, and the other end of the crank plate is fixed to a drive shaft such as a motor to rotate the drive shaft. In the tape pull-out mechanism of a cartridge-type recording/reproducing machine, which swings a tape pull-out member having a tape roller around the fulcrum of the arm to pull out the tape from the tape cartridge, the side surface of the link groove opposite to the drive shaft of the crank plate; A tape drawer mechanism is provided with an elastic body and a stopper that regulates the arm position when a tape cartridge is loaded or ejected.