JPH0531687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a cassette type cleaning device for cleaning the magnetic head and capstan of a cassette deck of a cassette type magnetic recording and reproducing device, etc., and provides a supply means for supplying cleaning liquid to the cleaning tape inside the case, so that when the case is set on the deck, a predetermined amount of cleaning liquid is automatically and steadily supplied to the wet cleaning tape inside the case.

[Conventional example]

Due to long-term use, the magnetic head and capstan built into the deck may attract dust such as magnetic powder and dust coated on the magnetic tape, which may adversely affect the playback characteristics and feeding performance of the magnetic tape. Become. For this reason, as a device that can easily clean this type of magnetic head, capstan, etc., a wet cleaning tape is installed in the cassette case, and the tape is slid against the object to be cleaned, such as the magnetic head or capstan, built in the deck. A cassette-type cleaning device that cleans and removes dust adhering to these by cleaning and removing them has already been implemented. However, in order to replenish the cleaning liquid to the wet cleaning tape built into the cassette-type cleaning device, each time cleaning is performed, the cleaning liquid replenishment container 7a is held in hand and the cleaning liquid is refilled in the cassette case 7b. The supply container 7 is filled through a predetermined injection hole 7c provided on the outer surface.
The refilling operation was very troublesome because the injection was made by pressing the container 7a, and since the replenishment container 7a was separate from the case 7b and small, it was easy to lose it. tended not to necessarily carry out such cleaning work.
Furthermore, the injection hole 7c is easily dirty due to the accumulation of dirt, and the injection hole 7c is easily contaminated due to the accumulated dirt.
There are also drawbacks such as the cleaning liquid becoming clogged and the injected cleaning liquid becoming dirty.Furthermore, since the amount of cleaning liquid injected is not constant, there may be cases where too much cleaning liquid is injected or the amount injected is insufficient. However, there were drawbacks such as the fact that the magnetic head, etc., was sometimes not cleaned sufficiently.

Therefore, a cassette-type cleaner with an automatic cleaning liquid supply function as described in Japanese Utility Model Publication No. 51-42356 has been proposed, but since this cleaner sprays the liquid directly onto the cleaning tape, All of the liquid is not absorbed by the cleaning tape,
Excess liquid may remain in the case and flow out into the deck, and the cleaning tape is only impregnated with the liquid in one area, resulting in low cleaning effectiveness and a large amount of waste.

Furthermore, since the container is directly pressed to supply a change in container volume, the material and shape of the container must be suitable for pressing, making the container difficult to handle. Furthermore, if the capacity of the container is increased, the influence of variations in volume changes becomes greater as variations in the supply amount, so there is a drawback that the capacity of the container cannot be increased.

[Purpose of invention]

Therefore, the present invention has been devised for the purpose of providing a new cassette-type cleaning device that eliminates the drawbacks of the conventional ones. A cassette-type cleaning device that is internally equipped with a liquid holding liquid 27, a container 30 containing cleaning liquid, and a supply section 16 that communicates with the container 30 and temporarily stores the cleaning liquid,
The volume of the supply section 16 is made smaller than that of the container 30, and the supply section 16 is directly pressed from the outside in conjunction with the operation of mounting the device on the deck 50, so that the cleaning liquid stored in the supply section 16 can be removed. By supplying the cleaning liquid to the liquid holding liquid 27, the cleaning liquid can be automatically and efficiently supplied to the wet cleaning tape.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view of an 8-track cassette cleaning device according to the present invention, and Fig. 2 is a plan view with the upper case removed. The capstan insertion port 4, the head insertion port 5, and the track switching sensor insertion port 6 are provided on the front of the case 1. On the rear side, there is a lid plate 11 for taking out a cleaning liquid replenishment container, which will be described later.
is attached so that it can be opened and closed slidingly. 1a,
Reference numeral 1b denotes a tapered surface formed on the front end portions of both side walls of the case 1, which guides a positioning roll 21c, which will be described later, when the case 1 is attached to and removed from a deck. 7 is an endless annular wet cleaning tape, which includes a pinch roller 8 rotatably disposed on the lower case 3 adjacent to the capstan insertion opening 4; A guide pin 9 and a guide pin 10 erected approximately in the center of the lower case 3 are stretched in a Möbius strip shape so that both the front and back sides can be used alternately. 12,1
3 is a pressing pad, 14 is a spring plate to which both pads 12 and 13 are attached, and 15 is an arcuate rib that guides the reversal of the tape 7.

Reference numeral 16 denotes a cleaning liquid supply section consisting of a retractable bellows-shaped container disposed on the lower case 3, and is fixed to ribs 17 and 18 erected on the lower case 3 (see Fig. 3). (See also). A rear end portion of the supply portion 16 faces a positioning fitting portion 19 formed below one side wall of the lower case 3 . When the case 1 is set in the cassette insertion hole 51 of the deck 50 for an 8-track cassette, the fitting portion 19 is elastically moved toward the case 1 by the spring force of the spring 21a disposed inside the deck 50. a rotating plate 21b that is rotatable around the emitted rotating shaft 21d;
A positioning device 21 comprising a positioning roll 21c rotatably attached to the tip of the rotary plate 21b.
The above-mentioned positioning roll 21c is inserted to position the case 1, and the roll 21c
The above-mentioned fitting part 1 is closed due to the strong spring force of the spring 21a.
9 and securely fixes the case 1 in a predetermined position. Both side walls 19a, 19 of the insertion part 19
b is tapered so as to gradually reduce the width of the fitting part 19 toward the inside of the case 1, and a fitting opening 22 that is slightly smaller than the diameter of the roll 21c is opened at the back of the fitting part 19, and the above-mentioned When the roll 21c is inserted into the insertion part 19, the front part of the roll 21c enters into the case 1 from the insertion opening 22 to a predetermined depth. Reference numeral 26 denotes a pouring pipe attached to the distal end of the supply section 16, and the distal end thereof is slightly inserted into an absorbent liquid retaining liquid 27 formed of a porous material such as felt. As shown in FIG. 4, the cross-sectional shape of the liquid retaining liquid 27 is U-shaped, and the tape 7
The tape 7 is slidably fed, and the cleaning liquid impregnated in the retaining liquid 27 wets the tape 7 at this time.

30 is a container for storing cleaning liquid;
As shown in FIG. 5, the support ribs 31 and 32 are disposed on supporting ribs 31 and 32 that are erected on the rear side of the lower case 3. 33 is a connecting pipe that connects the container 30 and the above-mentioned supply section 16, and the tip thereof is connected to the above-mentioned supply section 16.
is connected to the upper side of the container 30, and its rear end is connected to the upper side of the container 30.
The distal end of a delivery pipe 34 formed at the front of the container 30 is removably inserted into the rear end of the connecting pipe 33. The inner diameter of the connecting pipe 33 is larger than the inner diameter of the pouring pipe 26, and the supply section 16 is sufficiently supplied with cleaning liquid from the container 30 so that the supply section 16 is always full of cleaning liquid. Above rib 3
The upper surfaces of ribs 1 and 32 are slightly inclined downward toward the supply section 16, and the container 30 disposed on both ribs 31 and 32 is also slightly inclined toward the supply section 16. Supply section 1 via connecting pipe 33
The cleaning liquid is automatically replenished into the tank 6. 35 and 36 are a capstan and a magnetic head on the deck 50 side, respectively.

This device has the above-mentioned configuration, and its handling will be explained next. When cleaning the magnetic head 36 and capstan 35, the case 1 is inserted into the cassette insertion slot 51 of the deck 50. Then, the tapered surface 1a formed at the front end of the side wall of the case 1
hits the positioning roll 21c in the main deck 50, and when the case 1 is pushed further, the case 1 pushes the reel 21c aside with the tapered surface 1a against the spring force of the spring 21a, and moves into the insertion slot 51. enter. When the case 1 is inserted to a predetermined position, the positioning roll 21c is fitted into the fitting part 19 along the tapered side wall 19b of the fitting part 19 on the side of the case 1, and the case 1 is positioned (see FIG. 2). and the chain line in FIG. 3), when the roll 21c is inserted into the insertion part 19, the roll 21c is
The front part of the supply part 1c enters into the case 1 to a predetermined depth from the fitting opening 22, and the rear part of the supply part 16 enters the roll 21c.
The supply part 16 is compressed by a predetermined amount by being directly pressed by the pump, and the cleaning liquid in the supply part 16 is automatically pumped by a predetermined amount into the liquid holding liquid 27 through the pouring pipe 26. In other words, the supply section 16 and the positioning device 2
1 and the like constitute means for supplying cleaning liquid to the cleaning tape 7, and by setting the case 1 at a predetermined position on the deck 50, a predetermined amount of cleaning liquid is automatically supplied to the cleaning tape 7. Also, deck 50 for case 1.
If you set it to 7 and perform the specified playback operation, tape 7
is fed by the capstan 35 and the pinch roller 8, and when it slides in the recess 27a of the liquid retaining liquid 27, the cleaning liquid impregnated in the liquid retaining liquid 27 is further replenished onto the tape 7, and the tape 7 is transferred to the magnetic head 36. Cleaning is performed by sliding the front surface and the circumferential surface of the capstan 35. After cleaning the magnetic head 36 and capstan 35, the deck 5
The case 1 is taken out from the deck 50 by holding the rear part of the case 1 that protrudes outward. At this time, the positioning roll 21c is inserted into the side wall 1 in the opposite direction to the above-mentioned insertion operation.
9b from the fitting part 19, and the supply part 16
expands to its free length and returns to its original shape, supplying section 1
In order to maintain the full state of the cleaning liquid in the container 30, the cleaning liquid is replenished from the container 30 to the supply unit 16 in an amount substantially equal to the amount supplied to the tape 7 side.
In the above operation, the insertion depth of the positioning roll 21c into the insertion part 19, that is, the amount of contraction of the supply part 16 is approximately constant, and the supply part 16 is
Since the capacity is sufficiently small compared to , even if the amount of shrinkage varies, it will not exceed this small capacity range, and the amount of cleaning liquid can be stabilized.

As described above, the cleaning liquid is not directly sprayed onto the cleaning tape 7, but is temporarily impregnated into the liquid holding liquid 27 that can hold the liquid, and the cleaning liquid impregnated into the liquid holding liquid 27 flows inside the recess 27a of the liquid holding liquid 27. Since the tape 7 is gradually replenished as it slides,
A predetermined amount of cleaning liquid is efficiently supplied to the cleaning tape 7, and good cleaning is performed.
Particularly in this embodiment, since the pouring pipe 26 is slightly inserted into the liquid holding liquid 27, the cleaning liquid pumped from the supply section does not spill and is impregnated into the liquid holding liquid 27, so that the cleaning liquid is not spilled inside the apparatus. There is no risk of it getting wet. When the cleaning liquid in the container 30 becomes smaller than the volume of the supply part 16, the lid plate 11 is removed, the container 30 is taken out from the case 1, the cleaning liquid is replenished into the container 30, and then the container 30 is moved again to the rib 31. , 32, or a new container filled with cleaning liquid is set on the ribs 31, 32. Note that the amount of cleaning liquid in the container 30 can be checked from the outside by forming part or all of the cover plate 11 or the case 1 from a see-through transparent material, or by forming a see-through hole therein. It's good to do that.
In addition, since the inner diameter of the spouting pipe 26 is small, the surface tension of the cleaning liquid causes the roll 21c to
The cleaning liquid in the supply section 16 does not leak into the liquid holding liquid 27 when the pressure is not pressed.

[Other Examples]

FIG. 7 shows another embodiment of the present invention, in which there is a small distance t between the tip of the pouring pipe 26 and the liquid retaining liquid 27, and the positioning roll 21c is inserted into the fitting part 19 as described above. When the supply part 16 is pressed by being inserted into the supply part 16 , the cleaning liquid in the supply part 16 is injected from the tip of the spouting pipe 26 into the liquid holding liquid 27 . That is, the spring 21a exerts a strong fitting force on the roll 21c into the fitting part 19, and by strongly pressing the supply part 16 with the strong fitting force, the cleaning liquid in the supply part 16 is transferred to the liquid holding part 27.
Can be supplied by injection.

FIG. 8 shows another embodiment of the present invention, in which reference numeral 40 denotes a cleaning liquid storage container horizontally disposed on a rib 41 protruding from the lower case 3; 40 is connected to the supply section 16 disposed on the lower case 3 via a connecting pipe 42. An injection port 43 is formed on the upper surface of the container 40, and a lid plate 44 is rotatably provided on the injection port 43, which is urged by a spring (not shown) in a direction to close the injection port 43. The injection port 43 is normally closed by a cover plate 44.
In addition, the supply port 4 is located directly above the fill port 43 of the upper case 3.
5 is formed.

In this configuration, when the cleaning liquid in the container 40 becomes low, hold the supply container 46 in which the cleaning liquid is stored in your hand, and insert the injection tube 47 at the tip into the container 40 from each of the ports 45 and 43. Then, the cleaning liquid is replenished into the container 40.
In this way, the cleaning liquid is replenished into the container 40.
It may also be possible to do this from outside the cassette 1.
In this case, the container 40 may be fixed within the cassette 1, and the lid plate 11 is also unnecessary. Also in the case of this embodiment, the amount of cleaning liquid in the container 40 can be controlled from the outside by forming part or all of the case 1 from a transparent material, or by forming a see-through hole in a suitable position in the case 1. It would be good to be able to inspect it. In this embodiment, the same components as in the first embodiment are given the same reference numerals.

The cassette type cleaning device according to the present invention is
Furthermore, various design changes are possible; for example, in the first embodiment, the supply section 16 and the connecting pipe 3
3. The container 30 is integrally formed, and when the cleaning liquid in the container 30 becomes low, the supply part 16, the connecting pipe 33, and the container 30 are taken out from the case 1 as a unit and the cleaning liquid is replenished into the container 30,
Case 1 may be set again. Further, the tape 7 may not be tied into a Möbius strip shape, but may be tied into a normal endless tape shape, and only one side of the tape may be used as a cleaning surface.

The liquid retainer does not necessarily require the recess 27a for the tape 7 to pass through, and a structure in which the tape 7 is brought into contact with the side wall of the liquid retainer may be considered, and the shape of the liquid retainer may also be various, such as a cylindrical shape. It is.

Furthermore, as shown in this embodiment, the present invention can be applied to, for example, video cassette type and audio cassette type cleaning apparatuses other than the truck type cassette type cleaning apparatus.

[Effect]

As explained above, the cassette-type cleaning device according to the present invention includes a cleaning tape 7 in the case 1, a liquid retaining liquid 27 disposed along the cleaning tape 7, and a container 30 containing the cleaning liquid. This is a cassette-type cleaning device equipped with a supply section 16 that communicates with the container 30 and temporarily stores the cleaning liquid, and the supply section 1
The volume of the container 6 is made smaller than that of the container 30, and the supply section 16 is directly pressed from the outside in conjunction with the operation of mounting the device on the deck 50, and the cleaning liquid stored in the supply section 16 is transferred to the storage liquid. 2
7, the cleaning liquid contained in the container is impregnated with the liquid holding liquid at the stage when it is supplied to the cleaning tape, which is inconvenient in that only a small portion of the cleaning tape is excessively supplied with the liquid, unlike the conventional method. In addition, there is no liquid leakage inside the case, and even if there is variation in the pressure applied to the supply unit, it only varies within the volume range of the small capacity supply unit, so the cleaning liquid can be used almost immediately. It has the advantage that it can be supplied in a constant amount and that a good cleaning effect can be maintained stably.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is an overall perspective view of the 8-track cassette cleaning device, Figure 2 is a plan view with the upper case removed, Figure 3 is a partial plan view, Figure 4 is a partial perspective view, and Figure 5 is a partial side view. Figure 6 is a plan view during handling, Figure 7 is a partial side view of another embodiment of the present invention, Figure 8 is a partial side view of yet another embodiment of the present invention, and Figure 9 is a conventional FIG. 3 is a side view of the device in use. 1... Case, 4... Capstan insertion slot, 5
...head insertion slot, 6...wet type track switching sensor insertion port, 7...wet type cleaning tape,
16... Supply section, 19... Roll insertion section, 21...
...Case positioning device, 21c...Positioning roll, 50...Deck.

Claims (1)

[Scope of utility model registration request] A cleaning tape 7 inside the case 1 and a liquid retaining liquid 27 disposed along the cleaning tape 7
This is a cassette-type cleaning device that is equipped with a container 30 containing a cleaning liquid, and a supply section 16 that communicates with the container 30 and temporarily stores the cleaning liquid, and the volume of the supply section 16 is equal to or smaller than the container. 30, and the supply section 16 is connected to the mounting operation of the device on the deck 50.
A cassette type cleaning device characterized in that the cleaning liquid stored in the supply section 16 is supplied to the liquid storage 27 by being directly pressed from the outside.