KR940006553B1 - Pinch arm driving device of magnetic recording/reproducing - Google Patents

Abstract

The device reduces components of assembly, makes a run of tape stable by keeping a dakeup post (11) stable position. The device includes a pinch roller (10) which is placed in a fixed base plate (1), a pinch roller mechanism (30) which connects a pinch roller to a capstan axis (9), a driving means (20) which interconnects a pinch roller mechanism (30) to a slide base (2), a pinch arm (31) and pressure arm (32) which connect a pinch roller mechanism (30) to a fixed base plate (1), a spring (33), a pressure driving cap lever (35) which rotates a pressure arm (32), a driving pin (21), a slant plate (22), a takeup arm (41), and a connecting plates (31c)(41a).

Description

Pinch arm driving device of magnetic recording player

1 and 3 are plan views showing the configuration and operation of the apparatus of the present invention.

1 is a plan view showing an unloading state.

2 is a plan view showing the pinch roller in contact with the capstan shaft.

3 is a plan view showing the pinch roller is pressed on the capstan shaft.

4 is a perspective view of main parts of the device of the present invention;

* Explanation of symbols for main parts of the drawings

l: Fixed base plate 2: Slide base

5: Loading Gear 6: Inclined Post Assembly

10: pinch roller 11: take-up post

20: drive means 21: drive pin

22: inclined surface 30: pinch roller mechanism

31: Pinch arm 31c: Connecting piece

31a, 32a: Between Connections 32: Compression Arm

33: spring 35: cap lever

40: take-up means 41: take-up arm

41a: connecting piece 42: spring

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pinch arm driving apparatus of a magnetic recording player, and more particularly, to a pinch arm driving apparatus of a magnetic recording player which is provided with a pinch roller mechanism on a fixed base plate and drives the pinch roller arm by a slide base.

In the conventional magnetic recorder such as a capcoder, the pinch roller mechanism which is used to take the tape out of the tape cassette and compress the tape on the capstan shaft and then transfer the tape by the power of the capstan motor is installed on the slide base. Since there is a problem in precision and position reproducibility, and these parts must be assembled on the slide base and fastened at the bottom of the slide base, it is difficult to assemble and there is a defect that the productivity is lowered.

FIG. 1 is a plan view showing the configuration of the pinch arm driving apparatus of the magnetic recording and reproducing apparatus according to the present invention. FIG. 4 is a main perspective view, and as shown therein, the slide base 2 reciprocates back and forth on the fixed base plate l. The coupling is possible, and the fixed base plate 1 is provided with a rotating head drum 3.

A loading inner hole 4 is formed in both sides of the rotating head drum 3 of the fixed base plate 1, and a pair of loading gears 5 are engaged with each other at the front part of the rotating head drum 3. The inclined post assembly 6 is reciprocally coupled to both sides of the loading guide hole 4 back and forth.

The inclined post assembly 6 is connected to the loading gear 5 by articulated loading levers 7 and moves.

A capstan motor 8 is installed at one side of the rotating head drum 3 of the fixed base plate 1 so that the capstan shaft 9 protrudes upward.

The slide base 2 is provided with a supply reel table 12 and a take-up reel table 13.

In such a slide loading deck mechanism, the present invention provides a pinch roller mechanism 30 and a pinch roller mechanism 30 for moving and compressing the pinch roller 10 that is pressed onto the capstan shaft 9 to feed a tape. It is composed of a drive means 20 for driving ().

In the embodiment of the present invention, the take-up post 11 forming the running route of the tape is interlocked with the pinch roller mechanism 30.

The pinch roller mechanism 30 has a pinch arm 31 which is fixed to the fixed base plate 1 by the shaft 31 ', a crimping arm 32 which is fixed by the same shaft 31' on the lower portion thereof, and the shaft. And a spring 34, such as a torsion spring, which is supported by 31 'and holds the pinch arm 31 counterclockwise, wherein the pinch roller 11 is condensed to the tip of the pinch arm 31. . Connecting pins 31a and 32a are formed in the pinch arm 31 and the crimping arm 32, respectively, and both ends of the spring 33 are connected to the connecting pins 31a and 32a. 31, a locking piece 31b to which the crimping arm 32 is caught is formed. In addition, a crimp drive cap lever 35 having a locking groove 35a formed at one end thereof is rotatably installed on the fixed base plate 1 about the shaft 35 ', and the crimp drive cap lever ( The cap pin 36 fixed to the other end of the 35 is inserted into the cap groove 5a formed in the loading gear 5, and one side end of the crimping arm 32 of the compression driving cap lever 35 The operation pin 37 inserted into the locking groove 35a is fixed.

The driving means 20 formed on the slide base 2 is, for example, such that the driving pin 21 and the driving pin 21 of the pinch arm 31 come into contact with a middle portion of the upper surface of the pinch arm 31. The inclined surface 22 formed in the slide base 2 is used.

The tape take-up means 40 holding the take-up post 11 affixes the take-up arm 41 with the take-up post 11 affixed to the distal end to the fixed base plate 1 with a shaft 41 '. The spring 42 is connected to the connecting pieces 31c and 41a formed on the take-up arm 41 and the pinch arm 31, respectively.

Referring to the effect of the present invention as described above is as follows.

FIG. 1 shows a state in which the unloading is completed. In order to play or play in such a state, a tape cassette is mounted on the feeding reel table 12 and the reeling table 13, and the tape loading mode is performed. (2) is moved to the rear by a separate drive means, if the slide base 2 is moved to the rear in this way, the inclined surface 22 of the slide base (2) moves the drive pin 21 of the pinch arm (31) As it is pushed, the pinch arm 31 overcomes the force of the spring 34 and rotates clockwise. As the operation is further progressed, the pinch roller 11 is shown in FIG. 9).

Then, when the pinch arm 31 rotates forward as described above, the pressing arm 32 is caught by the engaging piece 31b of the pinch arm 31 and rotates forward together, and the contact portion 31d of the pinch arm 31 is rotated forward. The contact portion 41b of the take-up arm 41 is pushed so that the take-up arm 41 rotates forward together to form a second view, and an operation pin 37 fixed to one end of the crimping arm 41 is It is inserted into the locking groove 35a of the cap lever 35.

As shown in FIG. 2, when the pinch roller 10 approaches the capstan shaft 9 and the movement is stopped, the movement of the slide base 2 is stopped and the loading gear 5 continues to rotate. Since the cap pin 36 of 35 is slid in a section in which the radius gradually decreases in the concentric section of the cap groove 5a formed in the loading gear 5, the crimp driving cap lever 35 is half-centered about the shaft 35 '. While rotating in a clockwise direction, the actuating pin 37 of the pressing arm 32 inserted into the locking groove 35a is pushed so that the pressing arm 32 rotates clockwise about the axis 31 '. do.

As shown in FIG. 2, when the pressing arm 32 rotates clockwise while the pinch roller 10 is close to the capstan shaft 9, the spring 33 connected to the connecting rod 32a is pulled, and the spring 33 ) As the spring 33 is applied to the pinch arm 31 in a counterclockwise direction as the pinch arm 31 pulls the connecting portion 31a of the pinch arm 31, so the pinch roller 10 is pressed against the capstan shaft 9. It becomes the state of FIG. 3 which can transfer a tape. When the pinch roller 10 is compressed to the capstan shaft 9 in this way, the support surface 23 of the slide base 2 pushes the contact pin 43 of the take-up arm 41 to the take-up arm 41. And take-up post 11 guide the tape in place.

On the other hand, in the tape driving mode such as the play mode, when the operation stops and waits, the loading gear 5 rotates slightly in the opposite direction, and accordingly, the pinch arm 31 and the pinch roller are adversely affected. 10 rotates counterclockwise, and as the pinch arm 31 moves in the reverse direction, the take-up arm 41 and the take-up post 11 move slightly in the opposite direction by the spring 42. As a result, the tape T is loosened and the tension is slightly reduced.

In this way, since the tension of the tape T applied to the traveling system is reduced when switching from the play mode to the stop mode, the rotating head drum 3 is temporarily changed when switching from the stop mode to the play mode such as play again. The fault that prevents starting while starting again in the stopped state is prevented and starts smoothly.

When the play mode is performed in the state of FIG. 3 as described above, and the eject mode is performed, the pinch arm 31 holds the pinch arm 31 counterclockwise as the slide base 2 moves forward. Therefore, as the pinch arm 31 returns to its original position and the pinch arm 31 rotates in the counterclockwise direction, the take-up arm 41 is attracted to the spring 42 to return to the original position, thereby making the first degree ejection state.

As described above, the present invention enables the pinch roller mechanism 30 to be driven by the slide base 2, thereby eliminating the need to separately install the driving means. Not only can there be an advantage, but also the slide base 2 can hold | maintain the take-up post 11 in the correct position, and there exists an advantage that the running of a tape can be performed stably.

Claims (4)

A pinch roller mechanism 30 which is installed on the fixed base plate 1 to move the pinch roller 10 from the eject position to the operating position and presses it onto the capstan shaft 9, and the pinch roller mechanism 30 includes a slide base ( 2) A pinch arm driving apparatus of a magnetic recording and reproducing apparatus, characterized in that it comprises a driving means (20) for communicating with and driving. According to claim 1, wherein the pinch roller sphere 30 is the pinch arm 31 and the pressing arm 32 is fixed to the fixed base plate 1 in the same axis (31 '), and the pinch roller 10 to the pressing force Pressing the spring 33 is connected between the connection between the pinch arm 31 and the pressing arm 32 between the connection 31a, 32a and the loading gear 5 to rotate the pressing arm 32 A pinch arm driving device of a magnetic recording and reproducing apparatus, characterized in that it comprises a driving cap lever (35). According to claim 2, wherein the drive means 20 formed in the slide base 2 is a drive pin 21 is fixed to the middle of the upper surface of the pinch arm 31, the drive pin 34 of the pinch arm 31 Pinch arm driving device of a magnetic recording and reproducing apparatus, characterized in that it is an inclined surface (22) formed on the slide base (2) to be in contact with each other. The take-up arm 41 in which the take-up post 11 is fixed to the distal end portion of the fixed base plate 1 is fixed to the fixed base plate 1 by the shaft 41 ', and the take-up arm is fixed. A pinch arm drive device for a magnetic recording and reproducing apparatus, characterized in that a spring (42) is connected to a connecting piece (31c) (41a) formed on the (41) and the pinch arm (31), respectively.