KR890000776Y1 - Pinch roller of vtr - Google Patents

Abstract

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Description

VTR pinch roller crimping device

1 is a plan view showing a pinch roller compaction apparatus of the prior art, showing that it is in a stationary state.

FIG. 2 is a plan view showing that the pinch roller pressing device shown in FIG. 1 is in a compressed state.

Figure 3 is a perspective view of the pinch ring assembly in the present device.

4 is an exploded perspective view of the pressing arm and the push lever roller.

Figure 5 is a plan view showing that the device is in a stationary state.

6 is a cross-sectional view showing the configuration of the pinch ring assembly in the state of FIG.

7 is a plan view showing the device of the present invention in a compressed state.

8 is a cross-sectional view showing the configuration of the pinch ring assembly in the state of FIG.

* Explanation of symbols for main parts of the drawings

31: loading ring 32: capstan shaft

34: pinch roller arm 35: pinch roller

36: drive gear 37: pinch base

38: pinch ring 39: stop pin

40: guide slot 41: gear

42: guide post 43: guide slot

44: guide pin 45: spring

46: stopper 47: rear end

48: tip 49: pinch roller compression arm

50: axis 51: wing

52: slot 53: push lever

54: axis 55: push pin

56: spring

The present invention relates to a pinch roller crimping device of a VTR, and in particular, a pinch roller crimping device capable of crimping the pinch roller to the capstan shaft after driving the pinch ring assembly to a position adjacent to the capstan shaft using the rotational force of the loading ring. It is about.

It requires a pinch roller drive and crimping device to take a tape from a conventional tape cassette, load it onto a drum, and squeeze the pinch roller against the capstan shaft so that the tape squeezed therebetween can travel along the selected mode, One example of such a typical pinch roller drive and compaction apparatus is shown in FIGS. 1 and 2. That is, the pinch roller 5 which pulls out the tape 2 from the tape cassette 1 and loads it on the drum 3 and compresses the tape 2 against the capstan shaft 4 adjacent to the drum 3 is bra It is installed at the end of the pinch ring (8) formed with the gear (7) on the inner side through the kit (6), the pinch ring (8) is a loading ring (9) installed on the outer peripheral side of the drum (3) The driving motor 11 is engaged with the loading motor 10 to be driven. In addition, when the pinch ring 8 is driven by the loading motor 10 and the pinch roller 5 is moved to the position close to the capstan shaft 4, the bracket 6 of the pinch roller 5 is removed. A crimping lever 12 for crimping the pinch roller 5 to the capstan shaft 4 is formed on the shaft 13. The rear end of the crimping lever 12 has an intermediate joint portion 14 having a solenoid 15. The rear end is connected to the front end of the articulated lever 17 fixed to the shaft 16. Therefore, when the pinch roller 5 is close to the capstan shaft 4, the solenoid 15 is operated to drive the crimping lever 12, and the front end of the crimping lever 12 has a bracket 6 of the pinch roller 5. ) Is pressed.

However, in the configuration of the prior art, a separate power source for operating the solenoid 15 is required, and the pinch roller driving device and the pinch roller pressing device are separately configured to cause a cost increase and occupy a large amount of effective space. There were defects.

In the present invention, it is conceived in view of such a conventional situation, and the pinch roller's driving and crimping device has a single configuration so that the pinch roller's rotational force can be driven and compressed, thereby reducing the effective space and increasing the cost factor. It will be to reduce the bar, which will be described in more detail based on the accompanying drawings as follows.

The capstan shaft 32 is placed adjacent to the loading ring 31, and the pinch roller assembly 34 is installed on the pinch ring assembly 33 on the arc-shaped pinch ring assembly 33. In the case where 33 is coupled to the loading ring 31 by several drive gears 36, the pinch ring assembly 33 is composed of a pinch base 37 and a pinch ring 38 overlapping up and down. In the base 37, a pinch roller arm 34 and a guide post 42 on which a pinch roller 35 is installed are installed, and a stop pin 39 is inserted in the middle, and a guide slot 40 is formed at an end side thereof. The pinch ring 38 forms a gear 41 at an inner circumference, a push pin 55 is inserted in the middle, and a guide slot 43 opened at one end thereof to form a stop pin 39 and a guide post 42. ) Is inserted and guide pins 44 are inserted into the other end to be inserted into the guide slots 40 of the pinch base 37 to guide pins 44 and the stop pins. The pinch ring assembly 33 is completed by connecting the springs 45 with each other, and the stopper 46 is placed near the rear end side of the pinch ring assembly 33 at the pre-drive position of the pinch ring assembly 33. The pinch roller is mounted on the chassis (not shown) and adjacent the rear end 47 is bent toward the loading ring 31 and the front end 48 is extended to the pinch ring assembly 33 to pivot the compression arm 49. 50), a push lever 53 is formed on the biaxial shaft 50 with a pinch roller overlapping the lower side of the pressing arm 49 and having a blade piece 51 in the middle and a slot 52 formed at the rear end thereof. The slot 52 has a shaft 54 fixed to the chassis to be inserted, and the rear end 47 of the pressing arm 49 and the rear end of the push lever 53 are connected by a spring 56 to the pinch roller. to be.

In this invention, the rotational force of the loading ring 31 is transmitted to the pinch ring 38 of the pinch ring assembly 33 through the drive gear 36 engaged with the gear 41 of the pinch ring 38. At this time, the guide pin 44 of the pinch ring 38 and the stop pin 39 of the pinch base 37 are connected by a spring 45 so that the pinch ring 38 and the pinch base 37 move as a single assembly. At first, the pinch roller 35 mounted on the pinch base 37 moves to a position where the capstan shaft 32 is in contact with the capstan shaft 32. In this position, the stopper 46 meets the stop pin 39 and blocks the movement of the pinch base 37 by suppressing the movement of the stop pin 39. However, since the rotational force is continuously transmitted to the pinch ring 38, as the spring 45 between the stop pin 39 and the guide pin 44 extends, the pinch ring 38 continues to move. The continuous movement of the pinch ring 38 causes the push pin 55 of the pinch ring 38 to contact the blade 51 of the push lever 53 and the push pin 55 keeps pushing the blade 51. The push lever 53 is rotated in the clockwise direction, and the rear end 47 of the pressing arm 49, which is connected to the spring 56 at the rear end of the push lever 53, is also rotated in the clockwise direction, and the tip end thereof. The pinch roller arm 34 compresses the pinch roller arm 34 while the 48 is rotated in the clockwise direction to apply a pressing force against the capstan shaft 32.

As such, the present invention has the advantage of reducing the effective space without requiring a separate driving and pressing source by pressing the pinch roller by the pinch roller using the rotational force of the loading ring.

Claims (1)

Adjacent to the loading ring 31, the capstan shaft 32 is installed, and the pinch roller arm 34 is installed on the pinch base 37 with the pinch roller arm 34, and several driving gears 36 are mounted on the loading ring 31. In combination with the gear 41 of the pinch ring 38 superimposed on the pinch base 37, the pinch roller arm 34 and the guide post on which the pinch roller 35 is mounted on the pinch base 37. (42) is installed and the stop pin (39) in the middle and the guide slot (40) is formed on the end side, the push pin (55) in the middle of the pinch ring (38) and the stop pin at one end A guide slot 43 into which the 39 and the guide foot 42 are inserted is formed, and a guide pin 44 is inserted into the guide slot 40 at the lower end thereof and inserted into the guide slot 40 of the pinch base 37. And a spring 45 connected between the guide pin 44 and the stub pin 39, and the stopper 46 is installed in the chassis near the rear end side of the pinch ring 38 before driving. In contact with the rear end portion 47 is bent toward the loading ring 31 and the front end portion 48 pinch roller compression arm 49 is extended to the pinch base 37 side to the shaft 50, and to this shaft 50 Pinch rollers are folded to the lower side of the pressing arm (49) and has a blade piece (51) inward in the middle of the push lever 53 formed with a slot (52) at the rear end and the slot (52) is fixed to the chassis A pinch roller pressing device for a VTR formed by inserting a shaft (54) and connecting a rear end portion (47) of the pressing arm (49) and a rear end portion of the push lever (53) with a spring (56).