JPH0240159A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the traveling load by turning a regulating pin around a pinch roller shaft as a turning center in the regulating direction in the case of necessity of regulating a tape or in the separating direction from the tape in the case of unnecessarily of the regulation. CONSTITUTION:A tape guide device possesses the regulating pin 22 for regulating the tape 2 to be wound around a capstan 12 first without abutting a pinch roller 13 when the pinch roller 13 is brought into pressurized contact with the capstan 12, and the tape is to enter this pressurized contact in the direction of an arrow A. In addition, the device is provided with a holder 31 for press- fitting the holding the regulating pin 22 and turning it around the pinch roller shaft 24 as the turning center and a plate 32 for turning the holder 31. Then, when the tape 2 is traveled in the direction of the arrow A, the tape travel is regulated by the regulating pin 22, and when the tape 2 is traveled in the direction of B, the tape 2 is not guided by the regulating pin 22, i.e., the pin is moved into a position of noncontact with the tape 2. By this method, the traveling load can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing apparatus, and more particularly to a magnetic recording and reproducing apparatus in which a tape guide for guiding a magnetic tape is improved.

[Conventional technology]

FIG. 1 is a plan view showing a conventional device.
is a drum with a built-in magnetic head, 2 is a tape, 3, 4,
5, 6, 7, 8.9 are tape guides that guide the tape 2; 10 is an erasing head; 11 is an audio head; 12
1 is a capstan that drives the tape 2; 13 is a pinch roller that presses the tape 2 against the capstan 12; 14 is a cassette that stores the tape; 15, 16, 17, and 18 are in the bottom 14 and guide the tape 2. A cassette roller, 19 a supply reel for supplying the tape 2, 20 a take-up reel for winding the tape, and 21 a deck base. 22, the pinch roller 13 is pressed against the capstan 12, and when the tape 2 enters the pressure contact portion in the direction of arrow A,
This is a regulating pin that does not contact the pinch roller 13 and first regulates the winding of the capstan 12 by a predetermined amount.

FIG. 5 is an enlarged plan view of the vicinity of the regulating pin 22 in FIG. 1, and the same parts are designated by the same reference numerals.

FIG. 6 is a sectional view showing a conventional holding device for the regulating pin 22. In the figure, 23 is a bearing that rotatably holds the pinch roller 13, 24 is a pinch roller shaft that holds the bearing 23, and 25° 26 is the bearing 23. 27 is the collar holding the pinch roller 13, 28 is the pinch roller shaft 24 and the regulating pin 2.
29 is a shaft that rotatably holds arm 28 and is press-fitted into deck base 21; 30 is a washer that holds arm 28 so that it does not come off from shaft 29.

Next, the operation will be explained. In FIG. 5, when the tape 2 travels in the direction of arrow A, it enters the area where the capstan 12 and the pinch roller 13 are in pressure contact. , the speed of the tape 2 fluctuates due to poor external precision of the pinch roller 13. Therefore, normally, the regulating pin 22 is first provided so that the tape 2 comes into contact with the capstan 12.

Further, the regulating pin 22 is integrally formed with an arm 28 that holds the pinch roller 13, as shown in FIG.

Next, when the tape 2 travels in the direction of arrow B in FIG. Tape 2 due to friction
It only becomes a load when driving the motor.

[Problem to be solved by the invention]

Since the tape guide device of the conventional magnetic recording/reproducing device is constructed as described above, when driving the tape in the direction of arrow B in FIG. There was a problem that power consumption was high.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a magnetic recording and reproducing apparatus equipped with a tape guide device that can reduce the running load.

[Means to solve the problem]

In the magnetic recording and reproducing device according to the present invention, a regulating pin for regulating tape running is rotated around a pinch roller shaft that holds a pinch roller, and the direction in which regulation is performed when regulation is necessary is determined according to the running direction of the tape. Additionally, the device is equipped with a tape guide device that can be rotated away from the tape when regulation is not required.

[Effect]

In this invention, the regulation pin is rotated around the rotation of the pinch roller shaft that holds the pinch roller, in the regulation direction when regulation of the tape is necessary, and in the direction away from the tape when regulation is not required. With this configuration, the running load can be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are respectively plan views showing one state of a magnetic recording/reproducing device according to an embodiment of the present invention, FIG. 3 is an enlarged plan view of the vicinity of the regulating pin of this embodiment, and FIG. FIG. 2 is a sectional view showing a tape guide device according to an embodiment. In these figures, the same parts as in FIGS. 1, 5, and 6 are denoted by the same reference numerals and explanations will be omitted. In FIG. 4, 31 is a holder that holds the regulating pin 22 in its normal position and rotates around the pinch roller shaft 24, and 32 is a plate that rotates the holder 31 by a mechanism not shown.
33 is a plate 3 rotatably fitted to the other end.
The part 2 is a stop washer.

Next, the operation will be explained. In FIGS. 1 and 3, when the tape 2 runs in the direction of the arrow A, the tape travel is restricted by the regulating pin 22 as described in the conventional example, and when the tape 2 runs in the direction of the arrow B, as shown in FIG. And as shown in FIG. 3, the regulating pin 22 does not guide the tape 2, that is, it has moved to a position where it does not contact the tape 2. That state is the third
In the figure, it is indicated by a two-dot chain line. Regulation pin 2 at that time
The movement of 2 is described in Figure 4. In the figure, the pinch roller 13 is pressed against and separated from the capstan 12 by the arm 28, and at this time, the regulating pin 22 also moves together by operating the plate 32 by a mechanism not shown. Furthermore, a holder 31 holds the regulating pin 22 in its normal position by adjusting the regulating pin 22 in the traveling direction of the tape 2 and operating a plate 32 depending on whether or not a guide is required.
is rotated about the pinch roller shaft 24 as the center of rotation.

As described above, in this embodiment, the regulation pin 22 is configured to rotate away from the tape around the pinch roller shaft 24 when regulation of the tape is not necessary depending on the tape running direction, so that the running load is reduced. can be reduced.

〔Effect of the invention〕

As described above, in the magnetic recording and reproducing apparatus according to the present invention, the pin that regulates tape running according to the tape running direction at the capstan and the pinch roller pressure contact portion is rotated around the pinch roller shaft that holds the pinch roller. Since the tape is configured to be rotated so as to control the tape or move away from the tape, the tape can be easily operated to stabilize the running of the tape during normal recording and playback, and to reduce the running load when running in the reverse direction. There are effects that can be obtained with this configuration.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one state of a magnetic recording/reproducing apparatus according to an embodiment of the present invention or a conventional magnetic recording/reproducing apparatus;
This figure is a plan view showing another state of the embodiment of FIG. 1, FIG. 3 is an enlarged plan view of the vicinity of the regulating pin of the tape guide device of the embodiment of FIG. 2, and FIG. A cross-sectional view showing a tape guide device of a magnetic recording and reproducing device according to an embodiment, FIG. 5 is an enlarged plan view of the vicinity of a regulating pin of a tape guide device of a conventional magnetic recording and reproducing device, and FIG. 6 is a diagram of a conventional magnetic recording and reproducing device. FIG. 3 is a sectional view showing the tape guide device of FIG. 2 is a magnetic tape, 12 is a capstan, 13 is a pinch roller, 19 is a supply reel, 20 is a take-up reel, 22 is a regulation pin, and 24 is a pinch roller shaft. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) In a magnetic recording/reproducing device in which a pair of reels on which magnetic tape can be wound are loaded in parallel, a magnetic tape drive unit consisting of a pinch roller pressed against a capstan, which drives the magnetic tape, has a tape entrance. A regulation pin that regulates the running position of the magnetic tape is rotated around the pinch roller shaft that holds the above-mentioned pinch roller according to the running direction of the tape, and when regulation is necessary, touches the tape to regulate its running. 1. A tape guide device for a magnetic recording and reproducing device, characterized in that the tape guide device is provided with a tape guide device that can be rotated in a direction in which regulation is performed and away from the tape when regulation is not required.