JP2684498B2 - 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 type head cleaner having a liquid supply for applying a cleaning liquid to a cleaning tape.

[0002]

2. Description of the Related Art In a wet type head cleaner, its basic form is substantially the same as that of a tape cartridge for VHS or 8 mm video, and a cleaning liquid is replenished to a liquid supply provided in its main body case. Applying the cleaning liquid to the cleaning tape with the liquid supply
It is known in Japanese Utility Model Laid-Open No. 61-16710 and No. 63-55204.

[0003]

In the above head cleaner of the type in which the liquid supply is provided in the main body case, the main body case is provided with a liquid supply port for replenishing the liquid supply with the cleaning liquid from the outside of the main body case. The liquid supply port is formed in the shape of a square hole or a round hole near the front end of the main body case near the front end of the tape. However, it has been found that such a case where the liquid supply port is provided near the tape feeding out of the main body case causes a decrease in case strength. That is,
The main body case of this kind of head cleaner, which is formed in substantially the same form as the basic form of a tape cartridge for VHS or 8 mm video, is a structure for the body structure, that is, a holder for holding the form and a holder on the deck side. It can be divided into a main structure part that is supported to increase the relative positioning accuracy with respect to and a supplementary structure part of a transparent window that makes it easier to visually recognize the amount of tape remaining on the reel and the winding state. When the liquid supply port is opened in the main structure part of the main body case as shown in, the case strength is reduced,
The main structure of the body case is easily deformed starting from the liquid supply port, and the deformation reduces the positioning accuracy and makes the tape running unstable, and in the worst case, there is a problem that it may be difficult to put it in and out of the deck. Will occur. Particularly, as seen in Japanese Utility Model Laid-Open No. 63-55204, when the liquid supply port needs to be relatively large in an arcuate shape in order to cope with a change in the tape winding diameter, the case strength is significantly reduced. . An object of the present invention is to ensure the strength of the case by devising the position setting of the liquid supply port with respect to the main body case that houses the cleaning tape.

[0004]

According to the present invention, as shown in the drawing, the main body case 1 having a transparent window 33 for visually recognizing the reels is provided.
In a head cleaner having therein a pair of left and right feeding and take-up reels 3 and 4 around which the cleaning tape 2 is wound, and a liquid supply 19 for applying the cleaning liquid to the cleaning tape 2, the cleaning liquid is supplied to the liquid supply 19. A liquid supply port 34 for supplying the liquid is provided in the transparent window 33.

[0005]

The liquid supply port 34 is provided in the transparent window 33 which is an incidental structure part of the main body case 1 and is not provided in the main structure part, so that the liquid supply port 34 can be provided without lowering the case strength of the main structure part. It can be provided in the main body case 1. In particular, since the transparent window 33 is formed by a mold different from the main structure portion of the main body case 1 or by double injection molding, the strength of the liquid supply port 34 is taken into consideration, and the transparent window 33 is freely set to a shape that facilitates liquid supply. In addition, since the materials can be different, the design can be excellent. Further, the liquid can be replenished while visually checking the state of injection or dropping into the liquid supply 19.

[0006]

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, there are provided a tape outlet 5 having a tape guide 5a and a tape inlet 6 having a tape guide 6a in front of the outermost peripheral edge of the take-up and take-up reels 3 and 4. A pocket 7 for tape loading is formed between the tape outlet 5 and the tape inlet 6 while being formed so as to project further forward from 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, there are provided a front lid 8 for covering and protecting the outer surface of the leading portion of the cleaning tape 2 when not in use, and a back lid 9 for covering and protecting the inner surface of the leading portion of the cleaning tape 2. 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 application means 11 is provided between the left side wall of the main body case 1 and the delivery reel 3 in order to apply the cleaning liquid to the cleaning tape 2 by circumscribing the hub portion 3c of the delivery 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.

1 and 3, the coating arm 12 is shown.
Is arranged in the front-back direction between the left side wall of the main body case 1 and the delivery reel 3. 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. As shown in FIG. 4, a part of the liquid supply liquid 19 is mounted so as to project outward from the side circumference of the boss 17, and the center of the tip end of the liquid supply liquid 19 is formed so that the coating marks on the tape 2 form two upper and lower streaks. Notched in a V shape.

The second liquid reservoir 16 is for receiving the excess cleaning liquid overflowing from the recess 20 when the cleaning liquid is replenished, and the 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 lump of fibers. By setting the exposed (open) area of the second liquid reservoir 16 to the outside of the storage mat 22 to be larger than that of the liquid supply 19 of the first liquid reservoir 15, the surplus accumulated in the second liquid reservoir 16 is set. A minute amount of the cleaning liquid is evaporated and dried at an early stage and used for the next excess cleaning liquid receiver.

A passive pin 23 is provided upright near the swinging base end of the coating arm 12, and one end of a torsion coil type spring 24 fitted on the shaft 14 is hooked 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.

When the passive pin 23 standing upright near the swinging base end of the coating arm 12 is contact-regulated by the control arm 13 or released from the regulation, 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. 3, a rear end of the control arm 13 is horizontally swingably supported by a shaft 25 protruding from the upper case 1a, and is rotated counterclockwise by a torsion coil spring 26 fitted on the shaft 25. Oscillate 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 is exposed to the outside of the case from the opening 29 opened in the side wall of the upper case 1a, and the side wall 8 of the front lid 8 is shown.
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 lid 8 is closed, the wall member 28 is
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 coating in the coating posture, the cam roller 31 is provided adjacent to the boss 17 on the coating arm 12.
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, 2 and 4, the liquid supply port 3 is provided in a transparent window 33 through which the reel can be seen and which is provided in the upper case 1a.
4 is open. The liquid supply port 34 is used for the coating arm 1.
2 is located directly above the recess 20 when in the standby position and above the lower flange 3b on the large diameter side as shown in FIG. 3, and as shown in FIG. Three
4a is formed in a funnel shape that is biased to one side. When the liquid supply port 34 is opened in the transparent window 33 of the upper case 1a,
Not only is it easy to visually check the state of the cleaning liquid accumulated in the first and second liquid reservoirs 15 and 16, but it is also advantageous in securing the strength of the main body case 1. In this type of head cleaner formed in substantially the same shape as the basic shape of a tape cartridge for 8 mm video, the case 1a
As described above, the transparent window 33 formed originally is originally an accessory structure portion mainly for the purpose of visually recognizing the reel and does not require so much strength, and the liquid supply port 34 is provided at that portion. In particular, the case strength of the main structure part supported to improve the relative positioning accuracy with respect to the holder on the deck side is not adversely affected, and the case strength of the main structure part can be sufficiently secured. I arrived.

As the cleaning liquid applied to this type of head cleaner, an alcohol solvent is often used and its viscosity is extremely low. For this reason, as shown in FIG. 1, the liquid drops fall off simply by inverting the liquid container 35, and the liquid drops are likely to be replenished excessively. In order to prevent this, a resistor 37 made of a porous material is fitted inside the dropping nozzle 36 of the liquid container 35 to prevent the sagging 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.

In the above embodiment, the coating arm 12 is switched between the standby posture and the coating posture in conjunction with the opening / closing operation of the front lid 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 head cleaner of the present invention can be changed to a form applicable to a VHS or β video deck or a DAT deck.

[0021]

According to the present invention, since the liquid supply port 34 for supplying the cleaning liquid to the liquid supply 19 is provided in the transparent window 33 of the incidental structure portion of the main body case 1, the case strength of the main structure portion is reduced. The liquid supply port 34 can be provided in the main body case 1 without doing so. In particular, since the transparent window 33 is formed by a mold different from the main structure part of the main body case 1 or by double injection molding, the shape is freely set in consideration of the strength of the liquid supply port 34 and the ease of liquid supply. This is advantageous because it can be made different and the material can be made different so that it can be made excellent in design. Moreover, it is also advantageous in that the liquid can be replenished while visually checking the state of injection or dripping into the liquid supply 19, and excessive replenishment can be prevented.

[Brief description of the drawings]

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

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

FIG. 3 is an exploded perspective view of a liquid applying unit.

FIG. 4 is a sectional view taken along line BB in FIG. 6;

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]

 1 Body Case 2 Cleaning Tape 3 Feeding Reel 4 Take-up Reel 19 Liquid Supply 33 Transparent Window 34 Liquid Supply Port

Claims (1)

(57) [Claims] 1. A pair of left and right feeding and winding reels 3 and 4 around which a cleaning tape 2 is wound, and a liquid supply for applying a cleaning liquid to the cleaning tape 2 in a main body case 1 having a transparent window 33 for recognizing the reel. 19. A head cleaner comprising: a liquid supply port 34 for supplying a cleaning liquid to the liquid supply 19 in the transparent window 33.