JPH0734489Y2 - Cleaning cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cleaning cassette for a tape recorder that is mounted on a tape recorder to clean a magnetic head and a running portion of the tape. The present invention relates to a cleaning cassette which is wet-type cleaned first and then dry-type cleaning regardless of the direction.

[Conventional technology]

In a tape recorder, if the magnetic head gets dirty or the pinch roller gets dirty after a long period of use, the recording / playback status may deteriorate and the tape may not run smoothly. The cleaning tape is set in the cassette mounting part of the recorder and the cleaning tape is run around the magnetic head and around the tape running path. Such a cleaning cassette has a shape similar to that of a recording / playback cassette tape, in which a cleaning tape between two reels is wound, and the cleaning cassette is set at the tape loading position of the tape recorder and played. By being operated, the cleaning tape is set to be in sliding contact with the magnetic head or the pinch roller to wipe off the dirt adhering to the surface thereof.

As the cleaning tape, there are provided a so-called dry type which is made of Japanese paper, cloth or a synthetic resin film on which fine irregularities are formed, and a wet type which performs cleaning by impregnating these tapes with a cleaning liquid. The wet type has an advantage of being able to remove stains that cannot be removed by the dry type, but on the other hand, if the magnetic head or the pinch roller is not sufficiently dried, the magnetic tape may wind around the pinch roller.

Therefore, conventionally, a cleaning cassette in which a portion impregnated with the cleaning liquid and a portion not impregnated with the cleaning liquid are alternately provided, or the tape is impregnated with the cleaning liquid for a certain length and sent out, and then the cleaning liquid is not impregnated. A cleaning cassette designed to be sent out is also provided.

[Problems to be solved by the device]

In such a cleaning cassette, dirt is removed in the wet section, and floating dirt and residual moisture are wiped off and polished in the dry section, so that cleaning can be performed reliably and pinch due to insufficient drying, which is a drawback of the wet method. Although it is possible to prevent the magnetic tape from being wound around the roller, in the former case, if the cleaning operation is ended in the wet section, the cleaning liquid is not wiped off, and the same drawbacks as the conventional wet type described above occur. I will end up. Also,
In the latter case, it is convenient because it changes from wet to dry when traveling in one direction, but when it is reversed, it changes from dry to wet and ends, eventually the magnetic head and capstan get wet. The same problem as described above occurs.

Therefore, the purpose of this invention is to remove the dirt adhering to the magnetic head and the capstan in a wet state, and in a dry state, the tape recorder capable of bidirectionally wiping off the dirt that has floated and the water that has been left unwiped. The purpose is to provide a cleaning cassette.

[Means for Solving the Problems]

The above-mentioned problem is that a cleaning tape wound around a pair of tape reels and rewound freely, and at least a pair of guide rollers for guiding the cleaning tape from the tape reel to a position facing the magnetic head so as to be able to run. Has a cassette case inside the cassette case, sets the cassette case to the tape drive section of the tape recorder, and drives the tape reel to rotate to bring the cleaning tape into sliding contact with the magnetic head to clean the magnetic head. In, a pair of rollers respectively arranged between the guide roller and the tape reel, and by supporting the rollers, due to the difference in tension of the cleaning tape stretched along these rollers and the guide roller, Slide the sliding member and the cleaning tape A swing arm that rotatably supports a wet type cleaning roller that is pressed against one of the rollers of the guide member at one end side and presses the cleaning roller against one of the rollers provided on the slide member according to the rotation direction of the tape reel. And a gear that includes a cam means that meshes with a gear that is attached to one rotation shaft of the tape reel, swingably drives the swing arm in accordance with the rotation direction of the tape reel, and contacts one roller of the slide member. This is accomplished by providing a group.

[Action]

When the cleaning cassette is set on the tape recorder and rotated, the tape reel on the drive side rotates at a higher speed, so the tension of the cleaning tape on the drive side increases. As a result, the cleaning tape pulls the roller provided on the slide member in the direction in which the tension is reduced, and the slide member moves to the side where the tension is strong. At the same time, the gear group meshed with the tape reel is driven, and the swing arm is rotated by the cam means to the side opposite to the moving direction of the slide member. In this way, the roller on the side of the cleaning tape where the tension is weak and the cleaning roller attached to the tip of the swing arm are brought close to each other and further brought into contact with each other. The cleaning tape gets wet due to the contact between the two,
While wet, contact the capstan and magnetic head to remove dirt. When the rotation progresses to some extent, the swing arm rotates to the opposite side to release the contact state with the roller,
The cleaning tape is dry. In this state, feed the cleaning tape in one direction to the end, and wipe off the dirt on the wet cap stun and magnetic head.

After winding the cleaning tape to the end in one direction,
If it is driven in the opposite direction, the cleaning tape will be rewound. Then, the side where the tension was small in the initial state becomes larger this time, the sliding member slides in the opposite direction to the above, and the gear group rotates in the opposite direction, so that the swing arm also swings in the opposite direction. Contact the cleaning roller with the opposite roller. Then, by the same operation as described above, the cleaning tape is wetted and wet-cleaned, and then wiped off with the dry cleaning tape.
That is, at the start of rotation of the tape reel, the cleaning roller at the tip of the swing arm abuts the roller of the slide member on the upstream side in the tape running direction to wet the cleaning tape, and when the cleaning tape is fed to some extent, the cleaning roller slides. The cleaning tape is put into a dry state by separating from the roller of the member. As a result, the cleaning is performed by shifting from the wet type to the dry type in both the forward and backward directions.

〔Example〕

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

FIG. 1 is a plan view showing the internal structure of the cleaning cassette according to the embodiment in the initial state, which is mounted on the tape recorder. As shown in FIG. 1, the cleaning cassette 1 includes a pair of tape reels 3 and 4 in the case 2 and a pair of tapes that guide the tape to the head insertion opening 5 of the case 2, as in the case of the conventional tape cassette in which the magnetic tape is stored. Guide roller
It has 6 and 7. A cleaning tape 8 composed of a synthetic resin film or the like having a large number of small holes or irregularities formed on its surface so that the cleaning liquid can be impregnated is wound between the tape reels 3 and 4.

Inside the case 2 between the tape reels 3 and 4 and the guide rollers 6 and 7, there are provided a slide member 9 and a swing arm 12 having a cleaning roller 11 rotatably attached to its tip. The slide member 9 is composed of arm portions 13 and 14 at both ends and a connecting portion 15 between them. Long holes 16 and 17 for guides are formed in the arm portions 13 and 14, respectively. The slide member has pins 18 and 19 which are formed by arranging these long holes 16 and 17 upright on the case 2.
It is attached to the case 2 by being externally attached to the pins 18, 19 and the long hole 1
It is possible to reciprocate within the range constrained by 6,17. Further, guide rollers 21 and 22 are rotatably supported by the ends of the arm portions 13 and 14 on the opposite sides.

A gear 23 is coaxially attached to the lower portion of the tape reel 3, and the gear 23 meshes with a gear 24 rotatably attached to the case 2. A gear 25 having a smaller diameter than the gear 24 is coaxially attached to the gear 24, and a gear 26 rotatably attached to the case 2 is meshed with the gear 25.
A gear 27 having a smaller diameter than that of the gear 26 is coaxially attached to the lower portion of the gear 26, and a gear 28 at the final stage meshes with the gear 27, and the gear 28 to the gear 28 at the final stage are preliminarily provided. The speed is reduced at the set rate. The deceleration rate is set so that the gear 28 starts to rotate when the cleaning tape 8 starts to be wound around the one tape reel 3 or 4, and the gear 28 rotates exactly once when the winding is completed. A disk-shaped cam 31 is eccentrically mounted on the rotary shaft 29 of the final stage gear 28. The cam 31 is rotatably connected to the end of a swing arm 12 which is swingably supported by a support shaft 32, and is loose in an elliptical guide 33 provided at the end of the swing arm 12. Fitted with swing arm
12 is constrained by the guide 33 and the cam 31 and swings about the support shaft 32 as a fulcrum. Therefore, the cam means is constituted by the cam 31 and the guide 33.

Further, at the upper right of the case 2, the reset arm 34 is provided with a spring.
It is mounted by means of 35 around the support shaft 36 at all times while being elastically biased clockwise in FIG. A knob 37 is provided on the free end side of the reset arm 34, and the knob 37 is exposed in a window 38 provided on the rear surface of the case 2. Protrusion 39 on the back of the free edge of the reset arm 34
Is projected. On the top surface of the gear 28 at the final stage, a protrusion 39
A first engagement recess 41 (see FIG. 2) and a second engagement recess
An engagement recess 42 is formed. These first and second engaging recesses 41, 42 are provided at intervals in the diametrical direction of the gear 28, and the projection 39 is engaged with the first engaging recess 41 in the initial state. The protrusion 39 is firstly pressed by pressing the knob 37.
It moves from the engaging recess 41 to the second engaging recess 42. For example, although not shown, the lower end of the protrusion 39 may be tapered so that the inclined surface is located on the second engagement recess 42 side. Also, when the gear 28 rotates, the protrusion 39 moves to the second position.
The engagement with the engagement recess 42 is released, and for example, although not shown, the depth gradually decreases in the circumferential direction around the second engagement recess 42. This is possible by providing such a guide groove.

The cleaning tape 8 is hung from one tape reel 3 on the side of the roller 19 facing the cleaning roller 11, the guide roller 5, the guide roller 6, and the side of the roller 22 facing the cleaning roller 11, and the other tape reel 4 Are linked to.

The magnetic head 43 shown below the case 2, a pair of pinch rollers 44 and 45, and the pinch rollers 44 and 45, respectively.
The capstans 46 and 47 arranged at positions facing 45 are provided in a tape recorder main body (not shown).

The cleaning cassette 1 configured as described above presses the knob 37 of the reset arm 34 as shown in FIG.
The protrusion 39 is engaged with the second engagement recess 42 from the first engagement recess 41. After this, the tape recorder is loaded into the main body and set in the play state. As a result, the tape reel 4 rotates counterclockwise (arrow A) in FIG.
Further, the pinch roller 33 sandwiches the cleaning tape 8 with the cap stun 35, and the magnetic head 43 presses the cleaning tape against the pad 48. In this state, the cleaning tape 8 is wound around the tape reel 4 by the rotational force of the capstan 35 and the tape reel 4, and the tape reel 3 also rotates counterclockwise (arrow B). At this time, since the tape reel 4 on the take-up side rotates faster, the tension of the cleaning tape 8 on the tape reel 4 side increases, and the slide member 9 moves along the long holes 16 and 17 in the direction of arrow C. Slide to move.

On the other hand, as the tape reel 3 rotates, the gear 23 also starts to rotate, and the gear 28 at the final stage is rotated in the direction of arrow D via the gears 24, 25, 26, 27, 28. This rotation further rotates the cam 31, and this rotation causes the swing arm 12 to rotate in the direction of arrow E in the drawing due to the restraining movement between the cam 31 and the guide 33. By such movement of the slide member 9 and rotation of the swing arm 12, the cleaning roller 11 wetted by the cleaning liquid at the tip of the swing arm 12 comes into contact with the roller 19, as shown in FIG. By this contact, the cleaning tape 8 gets wet with the cleaning liquid, and in the wet state, the magnetic head
Sliding contact with the gap forming surface of 43, cap cap 35
To the pinch roller 33. When the gear 28 rotates to some extent, the projection 39 of the reset arm 34 disengages from the second engagement recess 42, and the elastic force of the spring 35 causes the reset arm 34 to return to its original position as shown in FIG. At this time, gear 28
Reset arm 34
Does not engage with the first engaging recess 41 even when the gear returns to its original position, the protrusion 39 engages with the flat surface of the gear 28 and prevents rotation of the gear 28. Absent.

When the gear 28 rotates about a half turn, the swing arm 12 returns to the initial position as shown in FIG. 3, and the cleaning roller 11 separates from the roller 19. As a result, the cleaning tape 8
Will be in a dry state and will be wiped in a dry state after cleaning with a wet type. When the gear 28 further rotates 1/4, the cam 31 causes the swing arm 12 to move as shown by an arrow F in FIG.
Although it is swung in the direction of the roller 22, since the slide member 9 is moving to the right in the drawing, the cleaning roller 11
Does not contact the roller 22. In this way, when the cleaning tape 8 is completely wound up on the tape reel 3 side, as shown in FIG. 1, the gear 28 at the final stage also makes one revolution, and the protrusion 39 of the reset arm 34 again becomes the first engagement. Mating recess 41
To prevent rotation of the gear 28. In this way, the running of the cleaning tape 8 is completed.

When cleaning is performed by reversing, that is, reversing, take out the cleaning cassette 1 from the tape recorder main body, and as shown in FIG.
To push the projection 30 from the first engaging recess 41 to the second engaging recess 42.
, The tape recorder body is loaded again, and the reverse play state is established. In the starting state, as shown in FIG.
The tape reel 3 on the take-up side rotates clockwise as indicated by arrow G, and the tape reel 4 rotates in the direction of arrow H. At this time, the rotation of the tape reel 3 side becomes faster, the tension of the cleaning tape 8 on the same side increases, the slide member 9 slides in the direction of arrow I, and the gear 28 moves in the direction of arrow J.
The swing arm 12 is rotated in the direction of arrow F by this rotation, and the cleaning roller 11 is brought into contact with the roller 22 as shown in FIG. As a result, wet cleaning is performed even when traveling in the reverse direction. Then, after a lapse of a predetermined time, the state becomes the same as that described with reference to FIG. 3, the swing arm 12 is separated from the roller 22 (FIG. 7), and the dry cleaning is performed. Thus, when fully dry and wound up in the opposite direction, the gear 28 at the final stage makes one revolution to return to the initial state shown in FIG. 1, and the projection 39 of the reset arm 34 makes the first engagement of the gear 28. The engaging recess 41 is engaged. When this engagement is performed, the running of the cleaning tape 8 is completely stopped, the tape reel 3 is locked, and it is not possible to rotate both forward and backward.

As described above, according to the above-described embodiment, the final stage gear 28 is rotated through the gear group in accordance with the sliding movement of the slide member 9 and the winding and feeding of the tape reel 3, and the cam 31 and the cam 31 are rotated. By swinging the swing arm 12 by the cam mechanism configured by the guide 33, the cleaning tape 8 is always wet-cleaned at the beginning of running of the cleaning tape 8 regardless of forward or reverse rotation, and after being wet-cleaned for a predetermined length, You can wipe off the dirt and dust that floated up and the remaining water to polish it. Further, at that time, wet / dry cleaning can be performed on the capstans 46, 47 and the pinch rollers 44, 45 in both the forward and reverse directions.

[Effect of device]

As will be apparent from the above description, according to the present invention configured as described above, the cleaning roller wetted by the sliding operation of the slide member and the swinging motion of the swing arm at the initial stage of running the cleaning tape is used as the sliding member. When one of the rollers is brought into contact with the roller and the cleaning tape is fed for a predetermined distance, the swing arm is returned to separate the cleaning roller from the roller, so that the dirt adhered to the magnetic head or the capstan in a wet state is removed, and the roller is further dried. In this state, it is possible to provide a cleaning cassette for a tape recorder that can bidirectionally wipe off floating dirt and residual moisture.

[Brief description of drawings]

The drawings are all for explaining the embodiments of the present invention. FIG. 1 is an explanatory view showing essential parts of a cleaning cassette and a tape recorder in an initial state, and FIG. 2 is a wet cleaning state in the case of forward rotation. FIG. 3, FIG. 3 and FIG. 4 are explanatory views showing a dry cleaning state in the case of forward rotation, FIG. 5 is an explanatory view showing an initial rotation in the case of reverse rotation, and FIG. FIG. 7 is an explanatory diagram showing a wet cleaning state in the case of reverse rotation, and FIG. 7 is an explanatory diagram showing a dry type cleaning state in the case of reverse rotation. In the figure, 1 is a cleaning cassette, 2 is a case, 3 and 4 are tape reels, 6 and 7 are guide rollers, 8 is a cleaning roller, 9 is a slide member, 11 is a cleaning tape,
12 is a swing arm, 21 and 22 are rollers, 23 ... 28 are gears, 2
Reference numeral 9 is a rotary shaft, 31 is a cam, 34 is a reset arm, 37 is a knob, 36 is a support shaft, 39 is a protrusion, and 41 and 42 are first and second engaging recesses.

Claims (1)

[Scope of utility model registration request] 1. A cleaning tape wound between a pair of tape reels and rewound freely, and at least a pair of cleaning tapes that guide the cleaning tape to a position facing a magnetic head so that the cleaning tape can run. It has a guide roller of and inside the cassette case, and set this cassette case in the tape drive part of the tape recorder,
In a cleaning cassette of a tape recorder for cleaning the magnetic head by rotating the tape reel to bring the cleaning tape into sliding contact with the magnetic head, a pair of rollers arranged between the guide roller and the tape reel. A slide member that supports these rollers and slides due to the difference in tension of the cleaning tape stretched along these rollers and the guide roller; A swinging arm which is rotatably supported at one end side thereof and is pressed against the cleaning roller to press the cleaning roller against one of the rollers provided on the slide member in accordance with the rotation direction of the tape reel, and the tape. Attached to one rotation shaft of the reel A gear group that includes a cam unit that meshes with the formed gear, swings the swing arm in accordance with the rotation direction of the tape reel, and contacts the one roller of the slide member. A cleaning cassette for tape recorders.