JPH04205841A - Recording or reproducing apparatus - Google Patents

Abstract

PURPOSE:To prescribe the compression force of a capstan with reference to a pinch roller and to ensure a stable tape feed force by a simple mechanism by a method wherein a base plate which holds a drum by an energizing means and a base plate which holds a cassette are energized to a direction in which they come close to each other and this energizing force is utilized. CONSTITUTION:A plurality of magnetic heads 2 are arranged and installed in prescribed positions on a drum 1; the drum is turned and driven by using a drum-driving motor. The drum 1 is fixed onto a second base plate 3; the base plate 3 is constituted in such a way that it can be moved by respective guide grooves 4, 30, 32 formed so as to pass through the base plate 3 and by respective guide pins 5, 31, 33 planted on a first base plate 28. The first base plate 28 and the second base plate 3 are energized relatively by an energizing means A, and the compression force of a capstan 13 with reference to a pinch roller 9 is prescribed. Thereby, the compression force of the capstan 13 with reference to the pinch roller 9 is prescribed stably, and a stable tape feed force is ensured by a simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a recording or reproducing device, and particularly to a device for recording or reproducing signals by diagonally guiding a tape around a cylindrical drum having a head. It is related to.

[Prior Art] In recent years, as recording density has improved, this type of recording and reproducing apparatus has become more compact, and a cassette-type tape recorder was devised that does not require pulling out the tape from the cassette in order to wind the tape onto a drum. has been done.

FIG. 3 is a perspective view showing the relative movement of the drum and cassette with the upper half of the cassette removed in this type of tape recorder disclosed in Japanese Utility Model Publication No. 63-36536 (hereinafter referred to as the conventional example). It is a diagram.

In FIG. 3, pinch rollers 9 and 1 are included in the cassette 6.
0 and tape guides 11 and 12, respectively, and when the drum l approaches the central opening of the cassette 6 and comes to a predetermined position, the tape is wound around the drum and the tape runs in a predetermined manner. It is structured so that the system is completed. Therefore, a dedicated tape loading mechanism is not required, and the mechanism is simplified and costs are reduced.

[Problems to be Solved by the Invention] As described above, in the conventional example, the drum 1 or the cassette 6 moves and the drum 1 enters the tape cassette 6 to form the tape bus 32. The pressing force between the pinch roller 9 and the capstan 13 is not constant.

In other words, when the capstan 13 presses against the pinch roller 9, it is determined only by the position, so the pressing force may be too little, too large, or vary, which may cause tape slip or deformation of the cassette. There was a problem.

This invention has been made to solve the problems of the conventional example described above. In a recording or reproducing apparatus in which a pinch roller is built in a tape cassette and a drum and a cassette are moved relative to each other, a capstan for the pinch roller is used. The purpose of this invention is to stably specify the pressure bonding force of the tape and ensure stable tape feeding force with a simple configuration.

[Means for Solving the Problems] Therefore, the present invention provides an apparatus for recording or reproducing signals by diagonally guiding a tape around a cylindrical drum having a head.

a moving mechanism for relatively moving a first base plate holding the cassette and a second base plate holding the drum using a cassette incorporating a tape reel and a pinch roller; A capstan placed in the
a recording device comprising a biasing means for biasing the first base plate and the second base plate in a direction toward each other, and pressing the casp tongue against the pinch roller using a biasing force of the biasing unit; The purpose of the present invention is to achieve the above object by means of a playback device.

[Operation] The recording or reproducing device according to the present invention has a configuration in which the first base plate and the second base plate are relatively biased by the biasing means to define the pressing force of the capstan against the pinch roller. Therefore, it is now possible to stably regulate the pressure bonding force without particularly providing a capstan on a movable member.

[Example 1 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 tape 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 this embodiment during recording and reproduction.

1 and 2, a plurality of magnetic heads 2 are disposed on a drum 1 at predetermined positions, and are rotationally driven by a drum drive motor (not shown). drum 1
is fixed on a movable base plate (second base plate) 3, and the base plate 3 has guide grooves 4, 30, 32 provided through the base plate 3.
It is configured to be movable in the vertical direction in the figure by each of the guide bins 5, 31, and 33 set up on the fixed base plate (first base plate) 28. Further, the base plate 28 holds the cassette 6.

The cassette 6 has built-in supply and take-up reels 7, 8, and pinch rollers 10 and 9 are provided on the supply side and the take-up side, respectively.

The biasing means A is formed of a spring 29 and is a means for biasing the base plate 3 toward the cassette 6 to define the pressing force of the capstan 13 against the pinch roller 9 (details will be described later).

Further, the pinch roller 9 is pressed against the capstan 13, and the tape runs. When the cassette is inserted upside down, the pinch roller 10 presses it. Inside the cassette, tape guides 11 and 12 are arranged on the inlet and outlet sides of the drum 1, respectively.

Next, the drive transmission system will be explained.

The reel system and capstan 13 are rotationally driven by a drive motor 15 disposed on the base plate 3 via a transmission system.

First, the reel system is connected to the gear 17 from the gear 16 attached to the output of the drive motor 15. Belt 18, gear 19. idler 2
0 to the winding side gear 21 or the supply side gear 22 to perform the winding operation.

Similarly, the gear 17 connects the capstan 13 to the belt 23 . It is connected to a gear 27 directly connected to the capstan 13 via gears 24, 25, and 26, respectively. With the above, it becomes possible to drive the capstan and reel system simultaneously with the motor 15.

In addition, the spring 29, which is the biasing element jUA,
The movable base plate 3 is constantly pulled in the direction of the reel (fixed) base plate 28.

In the state shown in FIG. 1, tape slack removal and FF-FR operations can be performed. On the other hand, the state shown in FIG. 2 shows a state in which the drum 1 has entered the cassette 6 and the magnetic tape 14 is guided by the drum 1, allowing recording and reproduction.

In FIG. 2, the base plate 3 has moved toward the cassette 6 along the grooves 4, 30.32 and the guide bins 5, 31.33, and the drum 1 has entered the cassette 6. The magnetic tape 14 is a tape guide 11.1
2 and tram 1, the driver is guided along a predetermined travel route.

In this state, the capstan 13 is pressed against the pinch roller 9, and the tape is driven by the rotation of the drive motor 15. At this time, the pinch roller 9 of the capstan 13
The pressing force against the spring 29 is determined by a predetermined biasing force formed by the spring 29. Of the guide groove and the guide bin, the guide groove 4 and the guide bin 5 are used to lock the right side of the movable base plate 3 from moving toward the cassette 6 side. Further, the capstan 13 is brought into contact with the pinch roller 9 by locking the left side portion thereof. The pressing force is a moment ratio with the guide bin 5 as a fulcrum, and the tensile force of the spring 29 is applied, so that the pressing force of the capstan 13 against the pinch roller 9 can be defined.

In addition, the capstan and drum do not move relative to each other on the same base plate, which has the effect of ensuring stability in terms of accuracy.

[Effects of the Invention 1] As explained above, the present invention uses the urging means to urge the main plate that holds the drum and the main plate that holds the cassette in a direction toward each other, and uses this urging force to move the pinch roller. It is possible to specify the pressure force of the capstan against the tape and ensure stable tape feeding force with a simple mechanism.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the state of a tape recorder according to an embodiment of the present invention immediately after loading a cassette, FIG. 2 is a block diagram showing the state of this embodiment during recording and playback, and FIG. 3 is a block diagram of a conventional example. FIG. 3 is a perspective view showing a state in which the upper half of the cassette of the tape recorder is removed. A...Biasing means l...Drum 2...Magnetic head 3...Movable base plate (second base plate) 6...
Cassette 7... Supply reel 8... Take-up reel 9.10... Pinch roller 13... Capstan

Claims (1)

[Claims] In an apparatus for recording or reproducing signals by diagonally guiding a tape around a cylindrical drum having a head, a cassette having a built-in tape reel and a pinch roller is used to hold the cassette. a moving mechanism for relatively moving a first base plate that holds the drum and a second base plate that holds the drum; a capstan disposed on the second base plate; A recording or reproducing apparatus, comprising: a biasing means for biasing a second main plate in a direction toward each other, and the casp tongue is pressed against the pinch roller using a biasing force of the biasing means. .