KR0136473Y1 - Tension adjusting apparatus of a tape recorder - Google Patents

Abstract

This invention relates to a tension control device of a tape recorder. The tension adjusting device of the tape recorder according to the present invention is composed of a tension arm in which a key groove-shaped insertion hole is processed, and a tension band formed with a stopper to be inserted into and supported in the insertion hole, thereby inserting the stopper in accordance with the shape of the insertion hole. After rotation, the tension arm and the tension band can be simply combined without applying excessive force to maintain a constant tension on the magnetic tape, as well as reduce the labor cost and cost of the product.

Description

Tension control device of tape recorder

1 is a plan view schematically showing a driving path of a tape recorder.

2 is a conventional tension control device,

(a) is a plan view of a tension control device connected by a pin.

(b) is a plan view of a tension control device connected by a protruding member.

3 is a tension adjusting device of a tape recorder according to the present invention,

(a) is a plan view of the tension control device.

(b) is the exploded perspective view of the main part of (a) of FIG.

* Explanation of symbols for main parts of the drawings

2: slider 4: supply rail

6: magnetic tape 8: take-up rail

10: rotating drum 12: impedance roller

14 pole base 16: guide roller assembly

18: inclined pole 20: ring gear

22: pinji roller 24: capstan motor shaft

26: Middle Paul 28: Review Paul

30: Take-up rail 40, 50, 500: Tension arm

40a, 45a, 55a: through hole 41: shaft

42: pin 43: spring

44: engaging jaw 45, 55, 550: tension band

46: band holder 47: tension adjustment spring

50a: protrusion member 500a: insertion hole

550a: Stopper

The present invention relates to a tension control device of a tape recorder. More specifically, a tensioner and a tension arm are formed by forming a stopper at one end of the tension band, inserting it into a keyway-shaped insertion hole processed in the tension arm, and rotating the support arm. It relates to a tension control device of the tape recorder that can be easily combined.

In general, magnetic recording and reproducing apparatuses such as video tape recorders (VTRs) have been developed in various forms for a long time, and nowadays, the demand is soaring that they are almost spread to each household and feel like a living necessity for modern people. Doing.

Most of the magnetic recording and reproducing devices currently used for home use mainly ½-inch tape cassettes using the VHS (Video Home System) method. Such a magnetic recording and reproducing apparatus includes a cassette holder into which a tape cassette is largely inserted, drive members for pulling the cassette holder into the main body and seating the main cassette on the main technology, and when the tape ring gear (not shown) is rotated. It is provided so that a movement is possible by the guide member (not shown) which rotates interlockingly.

Therefore, when the ring gear is rotated, the pole base 14 is positioned as shown in FIG. 1, the magnetic tape 6 is brought into close contact with the rotating drum 10, and the pinch roller 2 is connected to the capstan motor shaft 24 at the same time. By the close contact, the magnetic tape 6 is located between the pinch roller 22 and the capstan motor shaft 24. As the capstan motor shaft 24 is rotated, the magnetic tape 6 is connected to the middle pole 26. The pinch roller 22 is wound around the take-up rail 30 via the capstan motor shaft 24 and the review pole 28.

The tape travel device of the tape recorder is equipped with a tension regulator to control the change in tension applied to the magnetic tape 6 as the magnetic tape 6 on the supply rail 4 runs. As shown in FIG. 2A, the tension arm 40, the tension band 45 and the spring 43 are largely divided.

The tension arm 40, the shaft 41 is inserted in the center so as to be rotatably installed on the slider 2, the through hole 40a is inserted into one side of the center portion 42 is processed, the other On one side, the locking jaw 44 is formed so that the spring 43 is supported.

The tension band 45 is wound on the supply rail 4 side, one side of which is fixed to the band holder 46 and the other side of which the through hole 45a is machined is inserted into and fixed to the tension arm 40. It is coupled to 42, the spring is mounted to the engaging jaw 44 of the tension control spring 47 and the tension arm 40.

The tension adjusting device configured as described above has a tension arm 40 rotatably mounted on the slider 2, and the spring 43 is placed on the rotating drum side of the magnetic tape in the cassette of the tension arm 40 on the main deck. It is composed of a device for loading or unloading, and a device for allowing the magnetic tape to travel along a certain path. Therefore, when the tape cassette is inserted into the cassette holder, the insertion state is sensed and seated on the main deck. In this state, the magnetic cap is loaded on the magnetic tape by the pair of pole bases and loaded onto the magnetic tape. It is possible to record signals or to reproduce recorded signals.

Recently, products such as a portable camcorder developed by applying the above-described magnetic recording and reproducing apparatus have been trying to reduce the size and weight as much as possible for the convenience of the user. As a result, products using 8 mm tape cassettes, which have been developed and widely used, have been researched and developed.

Referring to the tape recorder devised as part of the above efforts with reference to the drawings as follows.

FIG. 1 is a diagram schematically showing the traveling path of the tape recorder of the tape recorder, in which the magnetic tape 6 released from the splice rail 4 provided on the slider 2 is guided by the supply post 8. Afterwards, it is in close contact with the rotating drum 10, and a tension control device is installed between the impedance roller 12 and the supply rail 4 to adjust the tension of the magnetic tape 6 in close contact as described above. Similarly, the magnetic tape 6 is in close contact with the rotating drum 10 by the guide roller assembly 16 and the inclined pole 18 mounted to the pole base 14. Here, the guide roller assembly 16 and the inclined pole 18 are mounted to the pole base 14, and the pole base 14 is attached to the locking jaw 44 and the tension adjustment spring 47. The tension band 45 is formed by forcibly fitting the pin 45a into the through hole 40a of the tension arm 40 and forcibly inserting the through hole 45a of the tension band 45 into the pin 45a. Is coupled to the tension arm 40 so that the tension of the magnetic tape 6, the force of the tension band 45, the force of the spring 43, and the like are parallel in the regeneration, rewind, fast forward and stop modes. As the tension arm 40 is rotated all the time, and as the tension arm 40 is rotated, the rotation speed of the supply rail 4 is controlled by the tension band 45, and the tension between them is kept constant by the spring 43. By holding, the tension of the magnetic tape 6 supplied from the supply rail 4 side was kept constant. However, as the pin is fitted into the through-hole of the tension arm as described above, deformation occurs around the through-hole, as well as an excessive force is applied to the tension band that is forcibly inserted into the pin. Even the slightest change affects the tension control device which operates sensitively, resulting in an increase in the number of labor and parts.

On the other hand, to compensate for the above problems, as shown in (b) of FIG. 2, the through-hole 55a of the tension band 55 is formed by forming a protruding member 50a provided with a locking jaw at one side of the center of the tension arm 50. Since the number of parts is reduced by inserting and fixing the protruding member 50a, the same method also applies the through-hole 55a of the tension band 55, such as a burr phenomenon by forming the protruding member 50a. Since deformation occurs in the tension band 55 by forcibly inserting the protrusion arm 50a of the tension arm 50, there is a problem that it is impossible to maintain a constant tension of the magnetic tape 6, which is a main role of the tension adjusting device. It was.

The object of the present invention is to solve the above problems, and an object of the present invention is to form an insertion hole in one side of the center portion of the tension arm and to form a stopper in the tension band in a shape corresponding to the insertion hole, and then insert the stopper into the insertion hole. The present invention provides a tension control device for a tape recorder that can be inserted into and rotated so that the tension arm and the tension band are not applied to the tension arm and are simply connected, thereby maintaining a constant tension on the magnetic tape.

Features of the tension control device of the tape recorder according to the present invention for achieving the above object is a tension arm installed to control the tension of the magnetic tape that changes as the tape recorder is loaded, unloaded and run, and the tension A tension band of a tape recorder attached to an arm to control a rotation speed of a supply rail and a spring-loaded tape recorder to have a constant tension between the tension arm and the tension bed, wherein a predetermined shape is formed at one end of the tension band. The stopper is provided, and the said tension arm forms the insertion hole similar to the shape of the said stopper.

Hereinafter, a preferred embodiment of the tension control device of the tape recorder according to the present invention will be described in detail with the accompanying drawings.

3 (a) and 3 (b) show a plan view and a partial exploded perspective view of the tension control device of the tape recorder according to the present invention, and the magnetic tape 6 released from the supply rail 4 installed on the slider 2 is shown. ) Is guided by the supply post (8), the tension of the magnetic tape (6) changes when it comes into close contact with the rotating drum (10) and rewinds, fast forwards, plays, and stops the magnetic tape (6). Tension control device is installed between the impedance roller 12 and the supply rail (4) to adjust the.

The tension adjusting device is divided into a tension arm 500, a tension band 55 and a spring 43, the tension arm 500, the shaft at one end to be rotatably installed on the slider (2) Is inserted, the key groove-shaped insertion hole (500a) is processed on one side of the central portion, the locking jaw 44 is formed to support the spring 43 on the other side.

The tension band 550 is wound on the side of the supply rail 4 so that one side thereof is fixed to the band holder 46 and the other side thereof is coupled to the insertion hole 500a of the tension arm 500. It is processed into a shape corresponding to the insertion hole 500a of the key groove shape, and the spring 43 is mounted on the tension adjusting spring 47 and the engaging jaw 44 of the tension arm 500. .

The tension adjusting device configured as described above is provided with a tension arm 500 rotatably on the slider 2 and the spring 43 is attached to the engaging jaw 44 and the tension control spring 47 of the tension arm 500. In addition, the tension band 550 is not detached from the tension arm 500 by rotating by inserting the stopper 550a of the tension band 550 in accordance with the shape of the insertion hole 500 of the tension arm 500. In the regeneration, rewinding, fast-forwarding and stop mode, the tension arm 500 is always rotated so that the tension of the magnetic tape 2, the force of the tension band 550, and the force of the spring 43 become parallel. As the tension arm 500 is rotated, the rotation speed of the supply rail 4 is controlled by the tension band 550, and the spring 43 maintains a constant tension therebetween, thereby supplying the supply rail 4 side. The tension of the magnetic tape 6 supplied from is to be kept constant.

Therefore, the stopper of the tension band is inserted and rotated into the insertion hole of the tension arm to couple them, so that the force of the tension arm and the tension band is not applied to the tension arm. No pins and no pins are removed, which saves labor and cost.

As described above, according to the tension control device of the tape recorder according to the present invention, since the change in the tension of the more minute tape is also detected and adjusted, there is an effect of clearing the image quality and sound quality.

Claims (1)

A tension arm installed to control the tension of the magnetic tape that changes as the tape recorder is loaded, unloaded, and driven, a tension band which is attached to the tension arm to control the rotational speed of the supply rail, and the tension arm and the tension band. In the tension control device of the spring-loaded tape recorder so as to have a constant tension therebetween, a stopper having a predetermined shape is formed at one end of the tension band, and the insertion arm is formed with the same insertion hole as that of the stopper. Tension control device for a tape recorder characterized in that.