JPH0685201B2 - Head cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head cleaner for cleaning a head for a video deck or an audio deck, and has an improved means for applying a cleaning liquid to a cleaning tape.

[0002]

2. Description of the Related Art A conventional technique for applying a cleaning liquid to a cleaning tape is disclosed in, for example, Japanese Utility Model Application Laid-Open No. 57-126722.
There is a gazette, in which a liquid-impregnated body such as a sponge is fixed in a stationary position in the main body case so that it is always in contact with the cleaning tape, and the cleaning liquid is continuously applied in the longitudinal direction of the tape as the cleaning tape runs. Had been applied to. Thus, in the type in which the cleaning liquid is continuously applied to the cleaning tape, there has been a problem that the cleaning tape clings to the head cylinder or the like during cleaning of the video head, and the tape cannot run.

Therefore, as other conventional techniques for solving such a problem, for example, JP-A-59-90224, JP-A-61-98209 and JP-A-61-13.
No. 6315 and the like, the application roller is rotatably arranged on the running line of the cleaning tape in the main body case, and the cleaning liquid impregnated body protruding from a part of the peripheral surface of the application roller is slidably brought into contact with the cleaning tape for cleaning. Some apply liquid intermittently to the tape over its length.

[0004]

However, conventionally, the liquid impregnating body for applying the cleaning liquid to the cleaning tape is in a fixed position regardless of the continuous coating method or the intermittent coating method.
Therefore, when the cleaning liquid is replenished to the liquid impregnated body and the head cleaner is loaded on the deck, the cleaning liquid is applied to the tape even when the cleaning tape is wound around the feeding reel.

When actually using the head cleaner,
Work to rewind the cleaning tape fed from the feeding reel is started. This tape rewinding operation is performed after cleaning is completed or at the start of cleaning.
However, when the cleaning liquid is applied to the cleaning tape until the time of winding the tape, when the tape is rewound after the cleaning is completed, the cleaning liquid is trapped between the tape winding layers on the feeding reel and is less likely to vaporize.
During the next use, the cleaning liquid may be excessively applied to the tape, which causes sticking of the cylinder head. Moreover, the interposition of the cleaning liquid increases the adhesion between the tape winding layers on the delivery reel, which tends to cause a situation in which the cleaning tape cannot be delivered smoothly from the delivery reel during the next use.

Further, when the cleaning tape is rewound at the start of cleaning after the cleaning liquid is replenished to the liquid impregnated body, the cleaning liquid is applied to the tape also at this time, and then the tape is unwound from the unwind reel to eject the head.
Even when cleaning is performed, the cleaning liquid is excessively applied to the tape in a double-coated state, which also causes the tape to be unable to run.

Therefore, an object of the present invention is to apply a cleaning liquid to a feeding reel while the cleaning tape is running in the tape winding direction with an extremely simple structure with a minimum required number of members. Is made impossible, and the cleaning liquid is applied to the cleaning tape only when the cleaning tape is running in the tape feeding direction to ensure smooth running of the tape.

[0008]

According to the present invention, as shown in the drawing, a delivery reel 4 around which a cleaning tape 2 is wound is rotatably accommodated in a main body case 1, and a cleaning liquid for applying a cleaning liquid to the cleaning tape 2 is provided. In the head cleaner in which the coating means 10 is arranged between the feeding reel 4 and the tape guide member 6 located in front of the reel 4, in the cleaning liquid coating means 10, the boss 12a on the base end side is located on the main body case 1 side. On the other hand, the cleaning tape 2 includes a holder 12 swinging about the longitudinal axis and a liquid impregnated body 11 held by the holder 12, and the cleaning tape 2 has the boss 12a.
The cleaning tape 2 is arranged so as to be slidably contacted with the outer peripheral surface thereof, and when the cleaning tape 2 travels in the tape feeding direction B, the liquid impregnated body 11 contacts the tape 2, but the cleaning tape 2 is in the tape winding direction. When traveling to D, it is required that the holder 12 swings around the longitudinal axis by sliding contact between the boss 12a of the holder 12 and the tape 2 so that the liquid impregnated body 11 is separated from the tape 2. To do.

[0009]

The cleaning tape 2 is the boss 12 of the holder 12.
It travels in sliding contact with the outer peripheral surface of a. Therefore, when the cleaning tape 2 is running in the tape feeding direction B, the holder 12 is swung so that the liquid impregnated body 11 is always in contact with the tape 2 due to the sliding contact between the tape 2 and the boss 12a. Energized. As a result, while the cleaning tape 2 is running in the tape feeding direction B, if the liquid impregnation body 11 is replenished with the cleaning liquid in advance, the tape 2 is removed from the liquid impregnation body 11.
The cleaning liquid is applied to.

Actually, the cleaning operation of running the cleaning tape 2 in the tape feeding direction B can be completed in a short time. When the cleaning operation is completed, the cleaning tape 2 may be rewound in the tape winding direction D in preparation for the next use. At this time, the holder 12 is brought into contact with the liquid impregnated body 1 by sliding contact between the boss 12a and the cleaning tape 2.
1 is oscillated so as to move away from the cleaning tape 2. Therefore, even if the cleaning liquid remains in the liquid impregnated body 11, the cleaning liquid is not applied to the cleaning tape 2 while the cleaning tape 2 is being rewound on the feeding reel 4.

On the other hand, the liquid impregnated body 11 is replenished with the cleaning liquid, the head cleaner is loaded on the deck, and then the cleaning tape 2 is once rewound on the feeding reel 4 side.
It is not uncommon for the tape 2 to be fed and run. Also in that case, while the cleaning tape 2 is running in the tape winding direction D, the cleaning liquid is not applied to the tape 2 as well, so that the cleaning liquid is not applied to the tape 2 twice in excess. .

[0012]

According to the present invention, even if the cleaning tape 2 is rewound onto the feeding reel 4 side after or after the cleaning of the head on the deck side is completed,
At this time, since the holder 12 is swinging so that the liquid impregnated body 11 is separated from the tape 2, the cleaning liquid is not applied to the tape 2. The liquid impregnation body 11 applies the cleaning liquid to the cleaning tape 2 only while the tape 2 is running in the tape feeding direction B for cleaning the head.

Therefore, at the time of cleaning the head, the cleaning liquid is not excessively applied to the cleaning tape 2 and the tape running defect is not caused, and the reliability of the operation can be ensured. In addition, the cleaning liquid is not applied between the tape winding layers of the cleaning tape 2 rewound on the feeding reel 4, which is also effective in preventing excessive application of the cleaning liquid at the time of head cleaning. The tape 2 can be smoothly fed out from the tape 4.

Moreover, the contact posture in which the liquid impregnated body 11 contacts the cleaning tape 2, and the liquid impregnated body 11 is in contact with the cleaning tape 2.
Switching to the non-contact posture separating from the contact is performed by swinging the holder 12 holding the liquid impregnated body 11. The swing of the holder 12 is operated by sliding contact between the boss 12a and the tape 2. Has become. There is no need for a special member for switching the holder 12 between the contact position and the non-contact position, and a spring member for urging and maintaining the contact position and the non-contact position by swinging. Therefore, it is advantageous in that the initial purpose can be achieved with a simple structure with a minimum necessary number of members, the cost can be reduced, and the cleaning liquid application means 10 is arranged in a narrow space.

[0015]

【Example】

(First Embodiment) FIGS. 1 to 5 show a first embodiment of a head cleaner according to the present invention, and FIG. 4 shows an example applied to a beta type video deck. The main body case 1 of this has substantially the same external shape as the main body case of the beta-type video cassette, and the cleaning tape 2 is provided on the left and right sides of the main body case 1.
The take-up reel 3 and the pay-out reel 4 around which the tape is wound are rotatably arranged, and the tape guide member 5 is provided at the left and right ends on the front side of the case.
6 are arranged, and a tape loading pocket 7 is recessed at a position corresponding to these tape guide members 5 and 6.

The cleaning tape 2 is delivered from the delivery reel 4 to the front side of the case and is taken up by the take-up reel 3 via the tape guide members 6 and 5. The take-up reel 4 and the take-up reel 3 have upper and lower flanges 4b, 4a and 3b, 3a, respectively. Be prepared for. Further, a front lid 9 for opening and closing is provided on the front side of the case to cover and protect the cleaning tape 2 drawn out to the front of the case when not in use.

Inside the main body case 1, a cleaning liquid applying means 10 is arranged between the feeding reel 4 and the tape guide member 6 located in front of it. In FIG. 1 and FIG. 5, the cleaning liquid application means 10 is composed of a liquid impregnated body 11 made of felt, sponge, etc., and a holder 12 for holding the liquid impregnated body 11.

The holder 12 has a boss 1 at the base end (front end).
Each of the rollers 2a has a roller 14 at its free end (rear end), and the liquid impregnated body 11 is fitted and mounted in a groove 15 provided in an intermediate portion between the boss 12a and the roller 14. Then, by fitting the boss 12a to the shaft 13 on the main body case 1 side which is vertically erected between the upper and lower walls 1a and 1b of the case, the holder 12 has a coating posture in which the liquid impregnated body 11 contacts the cleaning tape 2 and the tape. It can be freely swung about the shaft 13 in a horizontal posture over a non-coating posture separated from 2. The liquid injection port 16 is attached to a part of the case upper wall 1a corresponding to the upper part of the liquid impregnated body 11.
The cleaning liquid from 6 is the liquid impregnated body 1 from above the outside of the case.
Can be replenished by injecting into 1.

The posture switching operation of the holder 12 is performed by utilizing the tension of the cleaning tape 2. That is, the holder 12
Axis 13, the contact point A ₁ of the tape 2 on the peripheral surface of the tape guide member 6 as shown in FIG. 1, connecting the contact point A ₂ of the tape 2 on the peripheral surface tape wrap of the supply reel 4 Set it so that it is located inside the line L, and
The circular outer peripheral surface of a is pressed against the tape 2 from the outside. A plurality of recesses 17 (four in the illustrated example) are provided on the peripheral edge of the upper flange 4b of the feeding reel 4 at equal intervals in the circumferential direction, and the roller 14 is brought into contact with the peripheral edge of the upper flange 4b. .

At this time, when the head cleaner is loaded on the deck, the cleaning tape 2 is loaded in front of the case and wound around the head cylinder. At this time, as shown in FIGS. As the tape 12 travels in the tape feeding direction B, the holder 12 receives a rotational moment in the C direction due to a frictional force generated between the contact surfaces of the boss 12a and the cleaning tape 2.

That is, the roller 14 is urged by swinging so that it is always in contact with the peripheral edge of the upper flange 4b of the feeding reel 4.
Under this condition, as shown in FIG. 1, when the roller 14 falls into the concave portion 17 on the peripheral edge of the upper flange 4b, the liquid impregnated body 11
Switches to an application position in which the cleaning tape 2 contacts the cleaning tape 2, and at this time, the cleaning liquid is applied to the cleaning tape 2. As shown in FIG. 2, when the roller 14 is on the peripheral edge of the upper flange 4b other than the concave portion 17, the liquid impregnated body 11 is forcibly switched to the non-application posture in which it is separated from the cleaning tape 2. Thus, while the cleaning tape 2 is running in the tape feeding direction B, the cleaning liquid is intermittently applied over the longitudinal direction of the tape 2.

After cleaning the head, as shown in FIG. 3, when the cleaning tape 2 is rewound in the tape winding direction D with respect to the feeding reel 4, the tape 2 and the boss 12a are wound.
By the sliding contact with the holder 12, the holder 12 receives a rotational moment in the opposite direction E, and the holder 12 is switched to the non-contact posture in which the liquid impregnated body 11 is separated from the tape 2, and the non-contact posture is maintained. The same applies when the cleaning tape 2 is once run in the tape winding direction D at the start of head cleaning. Cleaning tape 2 in these cases
No cleaning liquid is applied to the. The boss 8a of the reel brake 8 is used as a means for restricting the swing angle of the holder 12 in the E direction, and the holder 12 contacts the boss 8a.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing a state of applying a cleaning liquid when a cleaning tape is fed out.

FIG. 2 is a plan view of an essential part showing a non-application state of a cleaning liquid when the cleaning tape is fed.

FIG. 3 is a plan view of essential parts showing a non-application state of a cleaning liquid when the cleaning tape is rewound.

FIG. 4 is a partially cutaway plan view showing an entire head cleaner.

FIG. 5 is a vertical sectional view of a main part.

[Explanation of symbols]

 1 main body case 2 cleaning tape 4 feeding reel 4b feeding reel flange 6 tape guide member 10 cleaning liquid applying means 11 liquid impregnating body 12 holder 12a holder boss 13 axis B tape feeding direction D tape winding direction

Claims (1)

[Claims] 1. A cleaning tape 2 in a main body case 1.
A feeding reel 4 around which is wound is rotatably accommodated, and a cleaning liquid applying means 10 for applying a cleaning liquid to the cleaning tape 2 is arranged between the feeding reel 4 and a tape guide member 6 located in front of the feeding reel 4. The cleaning liquid applying means 10 includes a holder 12 in which the boss 12a on the base end side swings about the longitudinal axis with respect to the main body case 1 side, and a liquid impregnated body 11 held by the holder 12. In addition, the cleaning tape 2 is arranged so as to run in sliding contact with the outer peripheral surface of the boss 12a, and when the cleaning tape 2 travels in the tape feeding direction B, the liquid impregnation body 11 contacts the tape 2,
When the cleaning tape 2 travels in the tape winding direction D, the boss 12a of the holder 12 and the tape 2 are in sliding contact with each other so that the liquid impregnated body 11 is separated from the tape 2, so that the holder 12 rotates about the longitudinal axis. A head cleaner characterized by swinging to.