KR200187150Y1 - Reel disk breaking apparatus of magnetic recording/reproducing system - Google Patents

Abstract

The present invention relates to a reel disk braking device of a magnetic recording / reproducing apparatus, which rotates about a hinge axis on an upper surface of the deck adjacent to a reel disk so as to be interlocked with a main slide member installed to be linearly movable on a deck of the magnetic recording / reproducing apparatus. A brake lever possibly installed and having a protrusion extending from a bottom thereof; And a band connected to the brake lever by turning the reel disk from a predetermined position of the deck and capable of compressing the reel disk by the rotation of the brake lever, wherein the protrusion slides on the main slide member. A plurality of protrusions having different heights are formed to be spaced apart at predetermined intervals so as to interfere with the protrusion on the guide surface to rotate the brake levers at different angles. In this way, the braking force with a different degree to the reel disk is provided by a band for pressing the reel disk with a different compression force by the rotation of the brake lever linked to the linear movement of the main slide member. It is easy.

Description

Reel disc braking device for magnetic recording / playback device

The present invention relates to a reel disk braking device of a magnetic recording / playback apparatus. Specifically, the magnetic recording / reduction can be provided to the reel disk in various stages by varying the tightening degree of a band surrounding a portion of the outer surface of the reel disk. A rally disc braking device for a playback device.

Deck mechanisms for performing recording / playback operations on magnetic tapes with rotating head drums can be seen, for example, in video cassette tape recorders (VCRs), camcorders, and the like.

1 is a plan view showing a tape traveling system of a general VCR.

Referring to the drawings, the tape 3 drawn from the supply reel 2 of the tape cassette seated on the reel disk 1 on the left side is guided to the plurality of guide rollers 12 so that the erase head 4 and the head drum ( 5) It is wound around the winding reel 9 seated on the right reel disk 10 past the audio head 6. Here, reference numeral 11 is a tension arm, which is used to maintain a proper tension on the tape when the tape travels. The reference numeral 11 rotates in the direction of the arrow in conjunction with the main slide member (not shown). Reference numeral 7 is a capstan motor shaft, and 8 is a pinch roller.

2 is a partial plan view showing a conventional reel disk braking device.

Referring to the drawings, the reel disk 1 is braked by a rotation of the main brake portion braked by the main brake lever 21 and the sub brake portion and tension arm 11 braked by the sub brake lever 22. 23) has a band brake section for braking.

Conventionally, it is composed of a plurality of brake parts as described above in order to apply an appropriate braking force to the reel disk 1, and has a cost reduction factor of assembly production rate and product cost due to a complicated structure. In addition, the occupied space increases in proportion to the required number of parts, which hinders slimming of the product.

The present invention was devised to solve the above problems, and an object of the present invention is to provide a reel disk braking device of a magnetic recording / reproducing device while providing a different braking force to the reel disk and having a simplified structure.

1 is a plan view showing a tape traveling system of a general VCR.

Fig. 2 is a partial plan view showing a reel disk braking apparatus of a conventional magnetic recording / reproducing apparatus.

3 is a plan view showing a reel disk braking apparatus of the magnetic recording / reproducing apparatus according to the present invention.

4 is a plan view illustrating a state in which the reel disk braking device of FIG. 3 is braking the reel disk in the stop mode.

Explanation of symbols on the main parts of the drawings

1, 10, 31: Reel Disc 2: Supply Reel

3: tape 4: erase head

5: head drum 6: voice head

7: capstan motor shaft 8: pinch roller

9: reel 11, 41: tension arm

12, 46: guide roller 21: main brake lever

22: sub brake lever 23, 39: band

32: Deck 33: Hinge Shaft

34: brake lever 35: first arm

36: second arm `37: projection

38: main slide member 42: first protrusion

43: second projection 44: guide surface

45, 48: spring

In order to achieve the above object, the reel disk braking apparatus of the magnetic recording / reproducing apparatus according to the present invention is interlocked with a main slide member installed to be linearly movable on the deck of the magnetic recording / reproducing apparatus. A brake device for a device, comprising: a brake lever rotatably mounted on an upper surface of said deck adjacent to a reel disk and having a projection extending from a bottom surface thereof; and turning said reel disk from a predetermined position of said deck; And a band connected to the brake lever and configured to compress the reel disk by the rotation of the brake lever, wherein the main slide member interferes with the projection on the guide surface on which the projection slides, respectively. Stones of different height to rotate at different angles And the addition number which is spaced apart a predetermined distance to its features. The brake lever includes a first arm to which one end of the band is fixed and a second arm inclined at a predetermined angle with respect to a longitudinal direction of the first arm, and the second arm having the protrusion formed thereon, and being rotatable to the deck. The other end of the band is fixed to one side of the arm tension is installed and interlocked with the main sliding member to adjust the tension of the tape, the first arm is the arm tension when the predetermined angle rotates in the direction to pull the band It is preferable that a part of the arm tension is arranged so as to overlap the pivot path so as to prevent dragging.

Hereinafter, a reel disk braking apparatus of a magnetic recording / reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a plan view illustrating a reel disk braking apparatus of the magnetic recording / reproducing apparatus according to the present invention, and FIG. 4 is a plan view illustrating a state in which the reel disk braking apparatus of FIG. 3 is braking the reel disk in the stop mode.

Referring to the drawings, the brake lever 34 is rotatably coupled to the hinge shaft 33 on the upper surface of the deck 32 adjacent to the reel disk 31 on which the supply reel is seated.

The brake lever 34 extends at a predetermined angle with respect to the first arm 35 and the first arm 35, and the second arm 36 having a protrusion 37 contacting the main slide member 38 on the bottom thereof. )

The band 39 is fixed to one side of the tension arm 41 by turning the reel disk 31 from the first arm 35. The tension arm 41 has the same function as the reference numeral 11 of FIG. 1. The tension arm 41 is interlocked with the main slide member 38 to push out the tape positioned between the guide rollers 46 on the tape running track. To adjust the tension of the tape. Here, the other end of the band 39 fixed at one end to the first arm 35 may be provided so that the fixed center is positioned at the rotation center position of the tension arm 41 as another example of the illustrated type. It may be fixed at another position on the deck 32 other than 41). On the other hand, the band 39 is made of an elastic flexible material.

On the main slide member 41 installed on the bottom of the deck 32, protrusions 42 and 43 having different heights are formed on the guide surface 44 on which the protrusions 36 slide when the linear movement is performed. Accordingly, as the main slide member 38 moves in a straight line, the protrusion 37 is supported on the top of any one of the protrusions 42 and 43 or is positioned on the guide surface 44 between the protrusions 42 and 43. . In this case, the first arm 35 that is interlocked according to the position on the guide surface on which the protrusion 37 is supported pulls or releases the band 39 to provide mutually different braking force to the reel disk 31.

Although not shown, the main slide member 38 has a rack gear portion engaged with a gear portion that is rotationally driven on one side thereof so as to linearly slide with respect to the deck 32.

On the other hand, one end of the spring 45, which is an elastic means, is fixed at one side of the deck 32 so as to elastically bias the brake lever 34 in one direction, and the other end of the first arm 35 of the brake lever 34. It is coupled at one side of.

When the projection 37 is moved from the bottom of the guide surface 44 to the top of the protrusions 42 and 43, the protrusion 37 is slid while overcoming the restoring force by the spring 45, thereby being moved upwardly to the top of the protrusions 42 and 43. The protrusion 37 is maintained in a state in which the upper portions of the protrusions 42 and 43 are pressed to prevent the positional deviation due to external impact or the like.

As a method different from the illustrated example, precise sliding to a width corresponding to the outer circumferential surface of the protrusion 37 so as to prevent the protrusion 37 from being displaced on the protrusions 42 and 43 without using the spring 45. It is also possible by the method of forming a groove | channel.

Next, the operation of the reel disk brake device will be described.

First, after the cassette tape is seated, the first protrusion 42 of the main sliding member 38 to which the protrusion 37 is moved in the loading step to prevent sudden release of the tape in the loading step of loading the tape to each head position. Is supported. At this time, the pressing force of the band 39 applied to the reel table 31 is kept weak enough that the reel table 31 can be driven when the tape is expanded in the loading step. Meanwhile, the tension arm 41 is loaded between the guide rings 46 by interfering with other guide parts formed on the main slide member 38. Therefore, in order to maintain the braking force by tightening the band 39 on the reel disk 31 in the loading step, the moving distance of the band 39 according to the rotation of the tension arm 41 on the upper portion of the first protrusion 42 is maintained. In consideration of this it is necessary to have a constant slope. Similarly, in order to increase the braking force by tightening the band 39 to the reel disk 31 in the loading step, the upper portion of the first protrusion 42 may have a constant height. Since it is adjusted by the inclination of the protrusions 42 and 43 formed on the guide surface of the main slide member 38 in relation to the braking force, the position of the other end fixed point of the band 39 is not limited, and it is advantageous in design. Just set On the other hand, when fixing the band 39 on one side of the tension arm 41 rotated in conjunction with the main slide member 38 to adjust the tape tension tension arm 41 when trying to release the tension applied to the tape In conjunction with the movement of the band 39, the pressing degree of the reel disk 31 is lowered, the operation control becomes easier.

During normal driving of the tape after the loading step, the main slide member 38 continues to move a certain distance so that the band 39 surrounding the reel table 31 is separated from the reel table 31 so that the protrusion 37 is guided. Located at the bottom of 44.

In the stop mode for stopping the driven reel disk 31, the main slide member 38 is moved to the right side so that the protrusion 37 is supported on the upper surface of the second protrusion 43. At this time, the first arm 35 is also rotated at a predetermined angle while the restoring force of the spring 45 is moved by the movement of the protrusion 37 to pull the band 39 to strongly compress the reel disk 31. At this time, the edge of the rotating first arm 35 supports the tension arm 41 elastically biased by the spring 48 (see FIG. 4), whereby the band 39 strongly supports the reel disk 31. I can tighten it.

Thus, different braking force can be applied to the reel disk 31 by the band 39 by the protrusions 42 and 43 having different heights. Therefore, other braking force can be applied to the reel disk 31 only by the movement control of the main slide member 38. Here, the movement distance of the main slide member 38 is determined in relation to the other members to be loaded.

Relative height differences and separation distances of the protrusions 42 and 43 in the illustrated example may be set in relation to the operation of each element throughout the system.

The reel disc braking device of the magnetic / recording and reproducing apparatus according to the present invention is applied to a band for pressing the reel disc with a different compression force by the rotation of the brake lever linked to the linear movement of the main slide member. The structure is simple and the production is easy.

Claims (5)

A brake apparatus of a magnetic recording / reproducing apparatus interlocked with a main slide member provided to be linearly movable on a deck of a magnetic recording / reproducing apparatus, wherein the brake apparatus of the magnetic recording / reproducing apparatus is rotated about a hinge axis on an upper surface of the deck adjacent to the reel disk. A brake lever, possibly installed and having a protrusion extending from the bottom thereof; and And a band connected to the brake lever by turning the reel disk from a predetermined position of the deck and capable of pressing the reel disk by the rotation of the brake lever. Magnetic recording, characterized in that the main slide member is formed with a plurality of projections having different heights spaced apart at predetermined intervals so as to interfere with the projections on the guide surface on which the projections slide so as to rotate the brake levers at different angles. Brake device of play / playback device. 2. The brake lever of claim 1, wherein the brake lever comprises a first arm to which one end of the band is fixed and a second arm which extends in a direction inclined at a predetermined angle with respect to a longitudinal direction of the first arm, wherein the protrusion is formed. A reel disc braking device for a magnetic recording / playback apparatus. The magnetic recording / reproducing apparatus of claim 1, wherein the other end of the band is fixed to one side of an arm tension which is rotatably installed on the deck and interlocked with the main sliding member to adjust the tension of the tape. Reel disc brake system. The method of claim 3, wherein the first arm is arranged so as to overlap the partial region of the arm tension on the rotation path when the first arm is rotated in the direction to pull the band to prevent the arm tension is attracted. Reel disc braking device for magnetic recording / playback device. 4. The reel disk braking apparatus of claim 3, further comprising a spring having one end coupled to one side of the first arm and the other end fixed to a predetermined position on the tech.