JPH04205840A - Recording or reproducing apparatus - Google Patents

Abstract

PURPOSE:To make a motor for capstan drive use small-sized by a method wherein a capstan is arranged and installed on a lever which can be turned and the compression force of the capstan with reference to a pinch roller is prescribed by an energizing means. CONSTITUTION:When a tape 14 is guided with reference to a drum 1, a turning lever 28 and a capstan 13 which is arranged and installed on it are turned, the lever 28 is energized to the side of a pinch roller 9 by a prescribed energizing force and the compression force of the capstan 13 with reference to the pinch roller 9 is prescribed stably. In this case, the compression of the capstan 13 with reference to the pinch roller 13 can be released in this state. Thereby, a motor for capstan drive use can be made small-sized.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a recording or reproducing device, and more particularly to a device for recording or reproducing signals by diagonally guiding a tape around a cylindrical drum having a head. It is.

[Conventional technology]

In recent years, as recording density has improved, this type of recording and reproducing apparatus has become more compact, and cassette-type tape recorders have been devised that do not require the tape to be pulled out from the cassette in order to wind the tape onto a tram.

FIG. 3 is a perspective view showing the relative movement of the tram and cassette with the upper half of the cassette removed in this type of cheap coater disclosed in Japanese Utility Model Publication No. 63-36536 (hereinafter referred to as the conventional example). It is. In FIG. 3, the cassette 6 has pinch rollers 9, 10 and tape guides 11, 12 respectively, and the tram 1 is brought close to the central opening of the cassette 6 and brought into position. Sometimes the tape is wrapped around a tram to complete a specific tape running system. Therefore, there is no need for a dedicated cheap approach ink mechanism, which is expected to simplify the mechanism and reduce costs.

[Invention or problem to be solved]

As described above, in the conventional example, either the tram 1 or the cassette 6 is moved and the tram 1 enters into the tape cassette 6 to form the tape path 32, or at this time, the pinch roller 9 and the capstan 13 are pressed together. The force is not constant. That is, when the capstan 13 is pressed against the pinch roller 9,
Since the position is fixed, there is a problem that the pressure force may be too low or too high or vary, which may cause tape slip or deformation of the cassette.

In addition, since the tape is always pressed against a capstan or pinch roller when it is wound around a drum, it is necessary to use a motor such as a cue/reheux that regenerates signals while transporting the tape at high speed. In some cases, it may be necessary to rotate the capstan at high speed. As a result, the capstan drive motor has become larger, and even though the mechanism itself has become smaller,
This was an obstacle to reducing the size and weight of the entire device.

This invention was made to solve the problems of the above-mentioned conventional example, and includes a pinch roller built into the tape cassette.
An object of the present invention is to stably define the pressing force of a capstan against a pinch roller in a recording or reproducing device that relatively moves a drum and a cassette, and to realize a reduction in size and weight of the device as a whole.

(Means for Solving Eight Problems) Therefore, in the present invention, in an apparatus for recording or reproducing signals on a tape by causing the tape to run diagonally on a cylindrical drum having a head, the tape reel and a moving mechanism for moving the drum relative to the cassette using a cassette incorporating a pinch roller, a capstan disposed on a rotatable lever, and a capstan that moves the lever toward the pinch roller. and pressure release means for rotating the rotating lever against the urging force of the urging means to release the pressure of the capstan against the pinch roller. The purpose of the present invention is to achieve the above object with a recording or reproducing apparatus comprising the following.

[Effect]

When the tape is guided by the tram in this invention, the lever and the capstan disposed on it rotate and bias the lever toward the pinch roller with a predetermined biasing force. Thus, the pressure force of the capstan against the pinch roller can be stably defined. Further, in this state, the capstan can be released from being pressed against the pinch roller, making it possible to support various motors without increasing the size of the capstan drive motor.

(Example〕 Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the state of a cheap recorder according to an embodiment of the present invention immediately after loading a cassette, and FIG. 2 is a block diagram showing the state of the cheap recorder shown in FIG. 1 during recording and reproduction. 1 and 2, a plurality of magnetic heads 2 are disposed at predetermined positions on a tram 1, and are rotationally driven by a tram drive motor (not shown). The drum 1 is mounted on a movable base plate 3, and the base plate 3 is movable relative to the cassette 6 by means of guide grooves 4 and guide bins 5 set on a fixed base plate 32. .

The cassette 6 has respective reels 7.on the take-up and supply sides.
8 is built-in, and pinch rollers 9 and 10 are built-in on the winding side and the supply side, respectively. When the capstan 13 is inserted into the opening of the tram 1 or the cassette 6 as shown in FIG. 2, the capstan 13 is pressed against the pinch roller 9 by the biasing force of the springs 30, and the tape can be run. In the cassette 6, tape kites 11 and 12 are arranged on the entrance and exit sides of the tram 1, respectively.

A rotation fulcrum 34 of the reel system and capstan is arranged on the reel (fixed) base plate 32, and is rotationally driven by the drive motor 15 via a transmission system.

Next, this transmission system will be explained. First, the reel system is connected to the carrier 16 and the carrier 17 attached to the output of the drive motor 15. Held 18. Kya19. It is connected to a winding side cap 21 or a supply side cap 22 via an idler 20 to perform a winding operation.

Similarly, for the capstan 13, from the cap 17, the heald 23. Gear 24. Kiya 25. It is connected to a cap 27 directly connected to the capstan 13 via a coupling cap 26. The above connection allows the motor 15 to simultaneously drive the capstan 13 and the reel system.

Next, the pressing operation between the capstan 13 and the pinch roller 9 in this embodiment will be explained. The capstan 13 is mounted on a rotatable lever 28.
The rotation fulcrum 34 of No. 8 is located coaxially with the central axis of the capstan connecting cap 26 that engages with the capstan direct connecting cap 27. The slide lever 29 provided on the movable base plate 3 is
It is possible to move up and down in the figure by a mechanism not shown.

A hook portion 37 protrudes from the lever 29, and is loosely fitted into the hole 35 of the lever 28. The biasing force that defines the crimping force is given by the spring 30,
The lever 28 is biased toward the pinch roller 9 (counterclockwise) to define the pressing force of the capstan 13 against the pinch roller 9. That is, when the tram 1 is inserted into the cassette as shown in FIG.
9 is biased toward the cassette (counterclockwise).

The plunger 36 is energized during cue review and presses the slide lever 29 in the X direction in the figure. The end of the wing 30 is hooked to a hook 31 protruding from the base plate 3.

In the state shown in FIG. 1, the lever 28 is rotated by the projection 37 of the lever 29 in the opposite direction (clockwise) to the crimping direction (cassette side) regardless of whether the plunger 36 is energized or not. And the pinch roller 9 does not press.

In this state, if the slack in the tape is taken up, the device can be set to FF mode or FR mode, which feeds the tape at high speed. Note that 33 is the capstan flywheel.

In the state shown in Fig. 2, the tram l is cassette 6 compared to Fig. 1.
It is moved to the side and inserted into the cassette 6.

The magnetic tape 14 is guided by each of the tape guides 11, 12 so as to run at a predetermined position relative to the tram 1. The lever 28 is moved to the lever 29 by the movement of the base plate 3.
or the protrusion 37 of the lever 29 or the full 3 of the lever 28.
5 on the opposite side of FIG. 1, and is urged toward the pinch roller 9 side. At this time, a predetermined pressing force is applied to the pinch roller 9 by a moment due to the spring pressure of the spring 30 against the fulcrum 34. Since the center axis of the capstan connecting gear 26 and the fulcrum 34 of the lever 28 are coaxial, the engagement of the gear does not change and the gear can be driven smoothly.

In the state shown in FIG. 2, the apparatus is capable of being set to record mode or playback mode, but when the apparatus is set to cue or review mode, the plunger 36 is energized. As a result, the slide lever 29 moves in the direction indicated by arrow X in the figure, and the rotating lever 28 rotates in the direction not indicated by Y in the figure. Therefore, the capstan 13 can be separated from the pinch roller 9 with the tape wrapped around the tram 1 as shown in FIG.

In this state, when the reel is driven by the drive motor 15, the tape is conveyed at high speed by the reel, and a cue/review mode is realized.

In the above embodiment, the slide lever 29 is moved by the plunger 36, but it can also be moved by a cam moved by a moat.

〔Effect of the invention〕

As explained above, according to the present invention, the capstan is disposed on a rotatable lever, and the pressing force of the capstan against the pinch roller can be determined by the biasing means, thereby ensuring stable tape feeding. be done. In addition, the capstan can be separated from the pinch roller even when it is wrapped around tape or a tram, which has the effect of being able to handle various types of motors without increasing the size of the capstan drive motor. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the state of a cheap recorder which is an embodiment of the present invention immediately after loading a cassette, FIG. 2 is a block diagram showing the state of the cheap recorder of FIG. 1 during recording and reproduction, and FIG.
This figure is a perspective view of a conventional tape recorder with the upper half of the cassette removed. 1...Tram 2...Magnetic head 3...Moving base plate 6...Cassette 9.10...Pinch roller 11.12... ... Tape kite 13 - ... Capstan 26 ... Capstan connection gear 28 ...
・Lever 30...Spring (biasing means) 34...Fulcrum

Claims (1)

[Claims] A device for recording or reproducing signals on a tape by diagonally guiding a tape around a cylindrical drum having a head, which uses a cassette containing a tape reel and a pinch roller to relatively a moving mechanism for moving the drum relative to the cassette; a capstan disposed on a rotatable lever; biasing means for biasing the lever toward the pinch roller; A recording or reproducing apparatus comprising: a pressure releasing means for rotating a lever against the urging force of the urging means to release the pressure of the capstan against the pinch roller.