JP2696151B2 - 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 wet head cleaner provided with a liquid supply for applying a cleaning liquid to a cleaning tape, and particularly to a countermeasure for excessive replenishment of the cleaning liquid.

[0002]

2. Description of the Related Art In a wet type head cleaner, it is known to supply a cleaning liquid to a liquid supply in a main body case and apply the cleaning liquid to a cleaning tape with the liquid supply. -1471
No. 13 is known.

[0003]

As described above, in the type in which the supply liquid is provided in the main body case, the cleaning liquid is supplied to the supply liquid by injecting or dripping into the supply liquid from a liquid supply port provided on the outer wall of the main body case. If the cleaning liquid is replenished excessively at this time, the cleaning liquid may overflow from the supply liquid to the inner wall of the main body case. In such a case, during the cleaning, the overflowing cleaning liquid flows along the inner wall of the main body case and flows out to the deck side, thereby causing a problem that the lubricating oil of the tape loading mechanism and the tape guide mechanism in the deck is dissolved.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem. The object of the present invention overflows into the main body case by devising the setting of the liquid supply port and the position of the liquid supply to the reel for feeding the cleaning tape. This is to prevent the excess cleaning liquid from flowing into the deck.

[0005]

According to the present invention, as shown in the figure, a pair of left and right take-out and take-up reels 3, 4 around which a cleaning tape 2 is wound in a main body case 1; Supply liquid 19 applied to
A head cleaner comprising:
3 has a lower flange 3b , and the liquid supply 19 is
It is arranged above the flange 3b, and
The liquid supply port 34 for supplying the cleaning liquid is
It is provided on the upper wall of the main body case 1 so as to face the liquid supply 19 .

[0006]

When the cleaning liquid is excessively replenished to the supply liquid 19 from the liquid supply port 34, the cleaning liquid overflowing from the supply liquid 19 falls and disperses on the lower flange 3b. It does not flow out to the deck side.

[0007]

1 to 7 show a head cleaner in which the present invention is applied to an 8 mm video deck, and its basic form is substantially the same as that of an 8 mm video tape cartridge. In FIG. 2, a head cleaner rotates a pair of take-out and take-up reels 3 and 4 around which a cleaning tape 2 is wound around left and right inside a main body case 1 in which upper and lower half cases 1a and 1b are connected in a lid-like manner. It is arranged freely. The feeding reel 3 has a hub portion 3c around which the cleaning tape 2 is wound, and upper and lower flanges 3a and 3b extending from upper and lower ends of the hub portion. The outer diameter of the upper flange 3a is smaller than that of the lower flange 3b. ing.

At the left and right ends on the front side of the main body case 1, a tape inlet 6 having a tape guide 6a as well as a tape outlet 5 having a tape guide 5a is provided at the front of the outermost peripheral edge of the take-up and take-up reels 3,4. A tape loading pocket 7 is formed between the tape outlet 5 and the tape inlet 6 while being formed so as to protrude further forward than the portion.
The cleaning tape 2 is led out of the reel 3 through the tape guide 5a in the tape outlet 5 in front of the reel 3 into the pocket 7, and is located behind the tape guide 6a in the other tape outlet 6 through the tape guide 6a. It is taken up by the take-up reel 4.

On the front side of the main body case 1, a front cover 8 for covering and protecting the outer surface of the leading portion of the cleaning tape 2 when not in use, and a back cover 9 for covering and protecting the inner surface of the leading portion of the cleaning tape 2 when not in use. Have. As shown in FIG. 5, the front lid 8 is pivotally attached to the main body case 1 (upper case 1a) so as to be openable and closable about a pivot 8a in a posture in which the front surface of the main body case 1 is closed and an upper open posture. Is always urged to rotate to the closed position. Although not shown, the main body case 1 is provided with a reel brake means for preventing the feeding and winding reels 3 and 4 from rotating, a lock means for restricting the opening operation of the front cover 8, and the like.

A liquid applying means 11 is provided between the left side wall of the main body case 1 and the supply reel 3 in order to apply the cleaning liquid to the cleaning tape 2 by circumscribing the hub 3c of the supply reel 3. The liquid application unit 11 includes, as main members, an application arm 12 that swings horizontally and a control arm 13 that regulates a displacement operation of the arm 12 in conjunction with an opening and closing operation of the front cover 8.

In FIG. 3 and FIG.
Are disposed between the left side wall of the main body case 1 and the payout reel 3 in the front-rear direction. The front end of the application arm 12 is horizontally swingably supported by a shaft 14 erected from the lower case 1b in the tape outlet 5, and a first liquid reservoir 15 and a second liquid A reservoir 16. First reservoir 15
Consists of a keyhole-shaped boss 17 and a liquid supply 19 made of a felt-made application pad inserted and fixed in a groove 18 penetrating the boss 17 to the left and right. A liquid receiving recess 20 is formed shallowly on the upper end surface of the boss 17, and the upper portion of the liquid supply 19 is exposed in the recess 20. The liquid supply 19 is mounted so that a part thereof protrudes outward from the groove 18 of the boss 17, as shown in FIG. It is cut out in a V-shape.

The second liquid reservoir 16 is for receiving excess cleaning liquid overflowing from the recess 20 when replenishing the cleaning liquid, and has a petal-shaped peripheral wall 1 in plan view.
6a and the bottom wall 16b are formed in a shallow dish shape, and are disposed so as to surround the protruding base end of the boss 17. Then, an occlusion mat 22 that occludes and captures excess cleaning liquid is laid and mounted in a bullet-shaped recess adjacent to the boss 17.
The storage mat 22 is made of a porous material such as a sponge or a fiber mass. The storage mat 22 of the second reservoir 16
Is set to be larger than that of the liquid supply 19 in the first liquid reservoir 15, so that the excess cleaning liquid stored in the second liquid reservoir 16 is evaporated and dried at an early stage. Provide for the next excess cleaning liquid receiver.

A passive pin 23 is erected near the pivoting end of the application arm 12, and one end of a torsion coil type spring 24 fitted on the shaft 14 is hung on the pin 23,
The application arm 12 is oscillated in a counterclockwise direction about a shaft 14 in the tape outlet 5 so as to oscillate in a counterclockwise direction.
Are always pressed against the hub 3c, which is the center of rotation of the payout reel 3. By the pressing action, it is possible to prevent rattling of the pay-out reel 3 and to suppress the dance of the liquid supply 19 caused by rattling of the pay-out reel 3, so that the liquid supply 19 is always applied to the cleaning tape 2 on the hub 3 c. In contrast, stable contact can be achieved. The application arm 12 has a pivot 14 on the swinging base end side installed in a tape outlet 5 protruding further forward than a front portion of the outer peripheral edge of the payout reel 3, and a tip end of the swing behind the tape outlet 5. Since it extends inward, the length between the shaft 14 of the application arm 12 and the liquid supply 19 can be set as long as possible even in a restricted narrow space in the main body case 1. This is advantageous in that the supply of the liquid 19 to the cleaning tape 2 on the portion 3c is always stable regardless of the change in the tape winding diameter.

The control arm 13 restricts the contact of the passive pin 23 erected near the swinging base end of the coating arm 12 or releases the restriction, whereby the coating arm 12 is moved to the position shown in FIG.
Swinging and displacing to the standby posture shown in FIG.
Further, in the application posture, the cleaning posture is changed to the application posture shown in FIG. 6 and the application execution posture shown in FIG. Among these attitude controls, switching from the standby attitude to the application attitude is performed in conjunction with the opening operation of the front cover 8, and the attitude switching for intermittent application is performed by the feeding reel 3.
This is performed using the rotation operation of.

In FIG. 4, the control arm 13 is supported by a shaft 25 having a rear end protruding from the upper case 1a so as to be horizontally swingable, and is counterclockwise rotated by a torsion coil type spring 26 fitted on the shaft 25. It is urged to swing in the direction. The tension of the spring 26 is set to be larger than the tension of the spring 24 for the application arm 12.
A cam piece 27, which is operated to be retracted by the front lid 8, is formed so as to protrude laterally near the distal end of the control arm 13.
The wall member 28 that regulates the second passive pin 23 is extended downward.

As shown in FIGS. 2 and 5, in the assembled state, the cam piece 27 projects out of the case through an opening 29 formed in the side wall of the upper case 1a.
It fits inside the tape window 8c for tape end detection opened at b. Therefore, when the front lid 8 is opened, the cam piece 27 is pushed into the case by the side wall 8b, and the entire control arm 13 tilts inward of the case against the spring 26 as shown in FIG. Thus, the existing lamp window 8c
Is used to operate the cam piece 27, the front cover 8
This is advantageous in that it is not necessary to add a structure for operating.

When the front cover 8 is closed, the wall member 28 is closed.
Abuts against the passive pin 23 to maintain the application arm 12 in the standby position against the spring 24. From this state, the front lid 8
When the opening operation is performed, the control arm 13 is tilted inward as described above and the contact restriction by the wall member 28 is released, so that the application arm 12 is switched to the application posture.

In order to perform intermittent application in the application posture, the application arm 12 is provided with a cam roller 31 adjacent to the boss 17.
Which is rotatably supported by pins 32 erected from the bottom wall 16b of the second liquid reservoir 16. Further, a cam recess 38 is formed at one peripheral edge of the upper flange 3a of the reel 3. In the application posture, the cam roller 31 is always in pressure contact with the peripheral edge of the upper flange 3a.
Keeps the application standby posture apart from the hub 3c.
When the feeding reel 3 is rotated by the tape loading operation and the cam roller 31 falls into the cam recess 38 as shown in FIG. 7 and is switched to the application execution posture, the liquid supply 19 circumscribes the hub 3c and the cleaning liquid is applied to the tape 2. Is applied. When the cam concave portion 38 passes, the cam roller 31 is pushed back onto the peripheral edge of the upper flange 3a, and returns to the application standby posture again. Thereafter, the cleaning liquid is applied to the tape 2 each time the reel 3 rotates.

In FIGS. 1 to 3, a liquid supply port 34 is opened at a predetermined position of a transparent window plate 33 provided on the upper case 1a (upper wall) of the main body case 1 so that the reel can be seen through. That is, the liquid supply port 34 is located immediately above the concave portion 20 when the application arm 12 is in the standby posture, and further has a diameter smaller than the outer periphery of the upper flange 3a of the lower flange 3b on the large diameter side as shown in FIG. It is disposed on the transparent window plate 33 so as to be located above the portion that protrudes outward in the direction, and as shown in FIG. 1, the drip port 34a is formed in a funnel shape deviated to one side.

The cleaning liquid applied to this type of head cleaner often uses an alcohol-based solvent, and its viscosity is extremely low. For this reason, as shown in FIG. 3, the liquid droplets drop just by inverting the liquid container 35, and the liquid droplets are easily replenished excessively. In order to prevent this, a resistor 37 made of a porous material is fitted inside the drip nozzle 36 of the liquid container 35 to prevent a dripping flow of the cleaning liquid. Therefore, simply turning the liquid container 35 upside down does not cause the dripping of the content liquid at a stretch, and the proper amount of the cleaning liquid can be surely dropped and replenished. This is particularly advantageous when the proper replenishing liquid amount is as small as several drops. is there.

According to the head cleaner as described above, the cleaning liquid is replenished from the liquid supply port 34 to the concave portion 20 of the first liquid storage section 15 excessively, and the first liquid storage section 15 or the second liquid storage section 16 is supplied. Even if it overflows, it once falls onto the lower flange 3b of the payout reel 3 and is dispersed, so that it does not immediately overflow onto the inner wall of the main body case 1. Further, even when the cleaning liquid remaining in the liquid supply port 34 due to surface tension during cleaning may drop from the liquid supply port 34 onto the lower flange 3b, the cleaning liquid may drop onto the inner wall of the main body case 1. Absent. Therefore, at the time of cleaning, such overflowing or dripping cleaning liquid can be prevented from immediately flowing along the inner wall of the main body case 1 to the deck side, and the lubricating oil of the tape loading mechanism and the guide mechanism in the deck is dissolved by the cleaning liquid. And the like can be eliminated.

In the above embodiment, the application arm 12 is switched between the standby position and the application position in conjunction with the opening / closing operation of the front cover 8, but this is not always necessary. For example, the posture may be switched by artificially operating a switching member provided on the outer surface of the main body case 1. The first liquid reservoir 15 may be formed in a roller shape or a flat plate shape,
It is not necessary to have a beak shape as in the illustrated example. Further, since the second liquid reservoir 16 should be formed in accordance with the shape of the first liquid reservoir 15, its planar shape is not limited. The head cleaner of the present invention can be changed to a form applicable to a VHS or β video deck or a DAT deck.

[0023]

According to the present invention, the liquid supply port 34 provided in the upper wall of the main body case 1 for supplying the cleaning liquid to the liquid supply 19 disposed above the lower flange 3b of the supply reel 3 is provided. Since it is provided so as to be located above the lower flange 3b, the excess liquid overflowing from the liquid supply 19 or the liquid supply port 3
The residual liquid dripping from 4 is dispersed on the lower flange 3b, does not immediately flow down the inner wall of the main body case 1 to the deck side, and lubricates the tape loading mechanism and the tape guide mechanism in the deck. The problem of melting can be solved.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line BB in FIG.

FIG. 2 is a cutaway plan view of a main part.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is an exploded perspective view of a liquid application unit.

FIG. 5 is a view taken in the direction of arrow C in FIG. 2;

FIG. 6 is a plan view of a liquid application unit.

FIG. 7 is a plan view of a first liquid storage section when coating is performed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Cleaning tape 3 Feeding reel 3a Feeding reel upper flange 3b Feeding reel lower flange 4 Take-up reel 19 Liquid supply 34 Liquid supply port

Claims (1)

(57) [Claims] 1. A pair of left and right pay-out and take-up reels 3, 4 around which a cleaning tape 2 is wound in a main body case 1.
And a supply liquid 19 for applying a cleaning liquid to the cleaning tape 2, the supply reel 3 has a lower flange 3b , and the supply liquid 19 is disposed above the lower flange 3b. Been
And a liquid supply for supplying a cleaning liquid to the liquid supply 19.
The main body case 1 so that the supply port 34 faces the liquid supply 19.
A head cleaner provided on the upper wall of the head cleaner.