KR950001263Y1 - Head drum cleaning device for vtr - Google Patents

Abstract

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Description

VTR Head Drum Cleaning Unit

1 is a schematic diagram showing a traveling crab of a general VTR.

2 is a plan view of a conventional apparatus, (a) is a state diagram before operation, and (b) is a state diagram at operation.

Figure 3 is a perspective view showing the main part of the device.

4 is a plan view of the device of the present invention, (a) is an unloading state, (b) is a cleaning state, (c) is a loading state.

* Explanation of symbols for main parts of the drawings

2: tape 3: inclined post

5: Head drum 6: Guide groove

18: Head cleaning roller 19,20: Inclined post base

The present invention relates to a head drum cleaning device for removing the foreign matter on the head drum before operation of the VTR to prevent damage to the head drum from the material, more specifically, the structure can be simplified and compact I did it.

In general, the driving system of the VTR is the same as that shown in FIG. 1, and when the tape 2 is loaded while the cassette 1 is built in the main body (not shown), the supply slope post base and the take-up slope post base are respectively. The fixed drums 3 and 4 move along the guide groove toward the head drum 5, loading the tape 2 into the head drum 5 so that the head drum 5 is stored on the tape 2. To play the content.

When the contents recorded on the tape are repeatedly reproduced by the odometer as described above, it is impossible to obtain a good image when the foreign matter on the tape contaminates the head drum 5, so that the tape 2 is prevented. Immediately before loading on the head drum 5, an apparatus for cleanly cleaning the head drum 5 is required.

The conventional head drum cleaning apparatus has a shape as shown in FIG. 2, and a pair of guide grooves 6 and 7 are formed to extend to the cassette 1 and the openings on both sides of the head drum 5 installed at an inclined angle. The inclined post base 10 and the take-up inclined post base 11, in which the inclined posts 3, 4 and the guide rollers 8 and 9 are provided in the grooves, are movable and the guide groove 6 on one side is provided. Arm 14 having a driving portion 14a to be rotated about the pin 13 by the take-up inclined post base 11 at the other end rotatably coupled to the head cleaning roller 12 at one end. The spring 15 is elastically installed, and in the unloading state of the tape, movement of the stopper 17 fixed to the chassis 16 by the arm 14 is controlled.

Therefore, in the state where the tape is unloaded, as shown in (a) of FIG. 2, the arm 14 has a force to rotate clockwise about the pin 13 by the restoring force of the spring 15. ) Is maintained so that the head cleaning roller 12 is spaced apart from the head drum 5.

In this state, when the tape loading mode is set, the supply inclined post base 10 and the take-up inclined force base 11, which are located in the opening of the cassette 1, move along the guide grooves 6 and 7, to move the tape. It is loaded on the head drum (5).

In order to load the tape into the head drum 5, the take-up inclined post base 11 moves along the guide groove 6 and moves the driving portion 14a of the arm 14 installed to be exposed on the guide groove 6. Since the pushing arm 14 is rotated counterclockwise while tensioning the spring 15 about the pin 13, the head cleaning roller 12 is connected to the head drum 5 as shown in (b). Since the head drum 5 is rotated while being connected to the head cleaning roller 12, foreign matter on the head drum 5 is removed.

Then, as the take-up inclined post base 11 continues to move along the guide groove 6 to be released from the driving portion 14a, the arm 14 is driven by the restoring force of the spring 15 (i), that is, In the initial state, the head cleaning roller 12 is spaced apart from the head drum 5 and the tape is connected to the head drum 5 by the inclined posts 3 and 4 and the guide rollers 8 and 9. The content contained in is played back.

However, such a conventional apparatus requires a separate arm 14, a spring 15, and a stopper 17 on one side of the guide groove 6 to connect the head cleaning roller 12 with the head drum 5, respectively. As a result, the cost has increased due to the increase in the number of parts, as well as the size of the set is increased in a camcorder and the like which require a small size and light weight due to the increase in the occupied area according to the installation of the parts.

The present invention is to solve such a problem in the prior art, and to provide an apparatus capable of cleaning the head drum before loading the tape without installing a separate arm.

According to an aspect of the present invention for achieving the above object, there is provided a drum head cleaning apparatus of the VTR by rotatably coupling the head cleaning roller on the inclined post base moving along the guide groove for loading the tape to the head drum do.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 and 4 of the accompanying drawings.

FIG. 3 is a plan view of the main part of the device of the present invention, and FIG. 4 is a plan view of the installation state of the device of the present invention. (6) (7) are formed, and the guide groove has an inclined post (3) (4) and a vertical guide roller (8) (9) for loading / unloading the tape (2) into the drum head (5). The installed inclined post base 19 and 20 are movably coupled, and the head cleaning roller 18 is rotatably coupled to the inclined post base 21 on one side.

As shown in FIG. 3, the head cleaning roller 18 extends one side of the inclined post base 20 to couple the head cleaning roller 18 to the extension part so that the tape 2 is unloaded. When the cassette 1 is inserted, the tape 2 is positioned between the head cleaning roller 18 and the inclined post 3.

Meanwhile, the head cleaning roller 18 installed on the inclined post base 20 may be installed to have an inclination angle and a direction angle in accordance with the inclination angle and the direction angle of the head drum 5.

This is to increase the cleaning efficiency by maximizing the connection area when the head cleaning roller 18 is connected to the head drum 5.

In addition, the head cleaning roller 18 is installed on the inclined post base 20 on the take-up side in one embodiment of the present invention, but the head cleaning roller can be installed on the inclined post base 19 on the supply side. .

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

First, when the inclined post bases 19 and 20 are positioned at the bottom dead center of the guide grooves 6 and 7, and inserted into the main body in the cassette 1, the tape 2 is the head as shown in FIG. Located between the cleaning roller 18 and the inclined post 3

When the tape loading mode is set in this state, the inclined post bases 19 and 20 are moved along the guide grooves 6 and 7 toward the head drum 5.

Accordingly, when the inclined post base 20 passes through the guide groove 6 close to the head drum 5, the head cleaning roller 18 rotatably coupled to the extension of the inclined post base 20 is illustrated in FIG. Since b) is connected to the head drum 5, as the head drum 5 rotates, the foreign matter on the head drum 5 is removed.

At this time, since the head cleaning roller 18 has the same inclination angle and direction angle as the head drum 5, the foreign matter removal efficiency can be maximized. The head cleaning roller 18 performs the same operation as the head drum 5. It is made only during the progress along the guide groove (6) in the connected state.

In this state, the inclined post bases 19 and 20 continue along the guide grooves 6 and 7 to load the tape 2 into the head drum 5 as shown in FIG. Since the head 6 moves away from the head drum 5, the head cleaning roller 18 is spaced apart from the head drum 5 so as not to cause interference when the tape 2 travels.

Then, when the running of the tape 2 is completed and the inclined post bases 19 and 20 are reduced to the initial state along the guide grooves 6 and 7, the operation in the reverse order as described above is performed. ), It is possible to clean the foreign matter on the head drum (5) during the initial loading of the tape (2).

As described above, the device of the present invention forms an extension on the inclined post base, and the head drum can be cleaned when the tape is loaded without a separate arm by a simple configuration of installing a head cleaning roller on the extension. Therefore, the productivity is improved by simplifying the parts, and the product is compacted due to the reduction of the installation area.

Claims (2)

In the head drum cleaning apparatus of the VTR, which combines the head cleaning roller 18 on the inclined post base 20 along the guide groove 6 to load the tape 2 into the head drum 5, the inclined post base The head of the VTR, which extends one side of the 20 and rotatably couples the head cleaning roller 19 to its extension, so that the tape is positioned between the head cleaning roller 18 and the inclined post 3. Drum cleaning device. 2. The head drum cleaning apparatus of the VTR according to claim 1, wherein the inclination angle and the direction angle of the heady cleaning roller (18) are coincident with the inclination angle and the direction angle of the head drum (5).