JPH0216412Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a so-called wet cleaning type eight-track type cassette cleaning device in which a cleaning tape built into the cassette is impregnated with a cleaning liquid. In order to prevent the excessively impregnated cleaning liquid from adhering to the capstan and flowing down to the deck side, a wet cleaning tape feeding roller is provided which is driven and rotated by the capstan via a pinch roller to prevent the magnetic tape from falling onto the deck. It is arranged to be fed by rollers.

(Prior Art) As shown in FIG. 9a, a cleaning tape 9a of this type of cleaning device has a tape guide boss 9k vertically installed in a cassette 9b,
When the cassette 9b is set on the deck, the capstan 9d on the deck side is stretched over the pinch roller 9c, which is rotatably provided at a position facing the capstan insertion hole on the front side of the cassette 9b. The cleaning tape 9a is conveyed by the pinch roller 9c and the capstan 9d to clean the front surface of the magnetic head 9e.

(Problem to be Solved by the Invention) In order to prevent the capstan 9d from idling and to ensure the feeding force of the cleaning tape 9a by the capstan 9d and the pinch roller 9c, in this type of cleaning device, the capstan 9d is attached to the outer peripheral surface of the pinch roller 9c. Therefore, if the cleaning tape 9a is excessively impregnated with cleaning liquid, the cleaning liquid impregnated into the tape 9a will come into contact with both 9a.
c and 9d, and the squeezed out cleaning liquid adheres to the capstan 9d, as shown in Fig. 9b.
As shown by the dotted line arrow, the flow flows down toward the deck side along the capstan 9d driven by the motor 9f on the deck side via the pulley 9g, belt 9h, and flywheel 9i, and the capstan 9
It tends to penetrate into the oil-impregnated bearing 9j etc. of d.
When the oil contained in the bearing 9j deteriorates or becomes diluted due to this cleaning liquid and the viscosity of the oil decreases, it becomes unable to be held in the bearing 9j and flows out of the bearing 9j, causing the oil in the bearing 9j to run out. However, the capstan 9d may not rotate smoothly due to rust, which may cause a malfunction of the device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conventional eight-track cassette cleaning device that eliminates the drawbacks of the conventional cleaning device.

(Means for Solving the Problems) For this purpose, the present invention provides wet cleaning tape feeding rollers 10 and 11 which are indirectly driven and rotated by a capstan 21 on the deck side via a pinch roller 5, and 12
The rollers 10 and 11 are conveyed by sliding friction force.

(Function) In the above configuration, the cleaning tape 12
is fed not by the sliding frictional force between the capstan 21 and the pinch roller 5, but by the sliding frictional force between the conveying rollers 10 and 11 which are indirectly driven by the capstan 21 via the pinch roller 5. Ru. Therefore, direct strong sliding contact with the capstan 21 is avoided, and the sliding contact is bypassed to the rollers 10 and 11 side, so the cleaning liquid impregnated in the cleaning tape 12 is squeezed out and transferred to the capstan. It does not flow directly to the deck side along the line 21.

(Example 1) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an 8-track cassette cleaning device according to the present invention, in which 1 is a cassette formed by overlapping an upper case 1a and a lower case 1b in a lid-like manner, and the shape of the cassette 1 is , the dimensions are the same as the well-known 8-track type cassette. The front wall of the cassette 1 has a capstan insertion slot 2, a magnetic head insertion slot 3, and a track switching sensor insertion slot 4.
A pinch roller 5 is rotatably provided in the capstan insertion port 2, and a plate spring 6 is provided in the magnetic head insertion port 3 and the sensor insertion port 4.
Pads 7 and 8 attached to both ends are provided.

10 and 11 are endless wet cleaning tapes 12 rotatably provided in the cassette 1.
(See also Fig. 2).
One of the rollers 10 has a small diameter, and its diameter is approximately the same as the diameter of the capstan 21, and in order to reliably receive the rotational force from the pinch roller 5, at least its barrel surface is made of a rubber material or the like with surface friction. It is made of large parts. Further, the roller 10 is in contact with the rear peripheral surface of the pinch roller 5, that is, the peripheral surface on the opposite side to the capstan insertion opening 2.
The other roller 11 has a larger diameter than the roller 10 and is approximately the same as the diameter of the pinch roller 5, and is in contact with the rear peripheral surface of the roller 10. Therefore, the roller 10 is moved by the capstan 21 via the pinch roller 5.
The roller 11 is rotated in the same direction as the pinch roller 5 at substantially the same speed, and the roller 11 is rotated in the same direction as the pinch roller 5 at substantially the same speed.

The cleaning tape 12 goes around a boss 13 that stands between the magnetic head insertion slot 3 and the pinch roller 5, passes between the rollers 10 and 11, and also runs around the center of the cassette 1 and on one front side. The magnetic head is stretched around the upright bosses 14 and 15, runs along the sensor insertion opening 4 and the magnetic head insertion opening 3 between the bosses 15 and 13, and enters from the magnetic head insertion opening 3. The magnetic head 16 is cleaned by slidingly contacting the front surface of the magnetic head 16.

The feeding roller 11 also serves as a liquid retainer for the cleaning liquid, and is formed by loading a liquid retaining material 11b such as felt into a cylindrical body 11a, as shown in FIG. A cleaning liquid suction port 11e is formed on the upper surface, and a cleaning liquid leaching port 11d is formed along the circumferential direction at the center of the circumferential barrel surface. The roller 1
1 is a cassette 1 by fitting rotary shafts 11e and 11f protruding from the upper and lower surfaces of the cylindrical body 11a into bearings 17 and 18 protruding from the inner surfaces of the upper case 1a and the lower case 1b. A cleaning liquid supply port 19 is formed in the upper case 1a directly above the liquid suction port 11c, and a nozzle 20a at the tip of the cleaning liquid supply container 20 is formed in the supply port 19 so as to be rotatable. From the above liquid retaining material 1
When a few drops of a predetermined cleaning liquid such as isopropyl alcohol is dropped onto 1b, the cleaning liquid infiltrates into the liquid retaining material 11b and further leaches out from the above-mentioned seepage opening 11d to the cleaning tape 12 which is in contact with the outer circumferential surface of the roller 11 and rotates around it. Furthermore, friction belts 11g made of a material with high surface friction such as rubber are attached to the upper and lower outer peripheral surfaces of the cylindrical body 11a in order to ensure the feeding force of the cleaning tape 12.

This device is constructed as described above, and when the cassette 1 is inserted into the cassette insertion slot of the deck, the front surface of the magnetic head 16 comes into contact with the cleaning tape 12, and the capstan 21 comes into contact with the outer peripheral surface of the pinch roller 5, and the capstan 21 comes into contact with the outer peripheral surface of the pinch roller 5. The rotation of 21 is transmitted to the pinch roller 5, and further transmitted to each roller 10, 11 via the pinch roller 5.
As mentioned above, the roller 1 comes into contact with the pinch roller 5.
0 rotates in the same direction as the capstan 21, and the roller 11 in contact with the roller 10 rotates in the same direction as the pinch roller 5, so each roller 10, 1
The cleaning tape 12 circulating between 1 and 1 is conveyed by both rollers 10 and 11 in the same direction as the conveyance direction by the capstan 9d and pinch roller 9c of the conventional magnetic type, thereby cleaning the front surface of the magnetic head 16. That is, this device detours the cleaning tape 12 to the rollers 10 and 11, thereby replacing the feeding of the cleaning tape 12 with the capstan 21 and the pinch roller 5, and instead of feeding the cleaning tape 12 with the roller 1.
By doing so, the cleaning liquid impregnated into the cleaning tape 12 adheres to the capstan 21, flows down along the outer surface of the capstan 21 toward the deck, and drives the motor, etc. inside the deck. This is to prevent any negative effects on the system.

(Embodiment 2) FIGS. 4 and 5 show another embodiment of the present invention, in which, like the first embodiment, inside the cassette 1, a pinch roller 5 is provided which is in contact with the pinch roller 5. A feeding roller 10 that is driven and rotated by a capstan 21 via the pinch roller 5 and a feeding roller 25 that abuts the roller 10 are rotatably disposed. The roller 25 does not also serve as a liquid retainer for cleaning liquid, and a friction belt 25b with a large surface friction is attached to the outer peripheral surface of a cylindrical body 25a rotatably disposed in the cassette 1 to ensure tape feeding force. It is formed by being attached. Reference numeral 26 is a bifurcated liquid-retaining material made of a liquid-retaining material such as felt, which is disposed on the opposite side of each of the rollers 10 and 25, and is configured to lightly contact both sides of the cleaning tape 12. A cleaning liquid supply port 27 is formed at a position directly above the liquid holding liquid 26 of the upper case 1a.
When a few drops of the cleaning liquid are dropped, the cleaning liquid is replenished onto the cleaning tape 12 via the liquid retaining liquid 26.

In the case of this device as well, when the cassette 1 is inserted into the cassette insertion slot of the deck and the playback operation is performed, the rollers 10 and 25 rotate in the same direction as the rollers 10 and 11 to feed the cleaning tape 12. Although the magnetic head 16 is cleaned, since the cleaning tape 12 does not come into contact with the capstan 21 on the deck side, the cleaning liquid impregnated in the cleaning tape 12 does not adhere to the capstan 21.

(Embodiment 3) FIGS. 6, 7, and 8 show still other embodiments of the present invention, in which 31 is a pinch roller provided in the capstan insertion opening 2, and 32 is the pinch roller. The roller 32 is a wet cleaning tape feeding roller that comes into contact with the rear peripheral surface of the capstan 31, and the rotation of the capstan 21 is transmitted to the roller 32 via the pinch roller 31, so that the roller 32 rotates in the same direction as the capstan 21. The cleaning tape 12 passes between the capstan 21 and the pinch roller 31, circulates along the circumferential surface of the pinch roller 31, and then wraps around each roller 3.
1 and 32 in the direction of the boss 14. As shown in FIG. 8, the pinch roller 31
is the diameter of the center portion 31a, and the upper and lower ends 31b,
The center part 31 is made slightly smaller than the diameter of 31c.
The capstan 21 on the deck side contacts the outer peripheral surfaces of the upper and lower ends 31b and 31c and transmits rotation to the pinch roller 31. The cleaning tape 12 is fed along the circumferential surface of the central portion 31a while being guided by the portions 31b and 31c. At this time, the cleaning tape 12 does not come into direct sliding contact with the capstan 21, or only lightly contacts the capstan 21. Therefore, the cleaning tape 1
The cleaning liquid impregnated in capstan 2
1 and the pinch roller 31 to prevent it from being squeezed out and adhering to the capstan 21.

The diameter of the central portion 32a of the feeding roller 32 is slightly larger than the diameter of both the upper and lower end portions 32b, 32c, and the central portion 32a fits into the recessed central portion 31a of the pinch roller 31,
The cleaning tape 12 is conveyed with both sides of the cleaning tape 12 sandwiched between the outer circumferential surfaces of a and 32a. That is, in this device, the cleaning tape 12 is fed by both rollers 31 and 32, and the capstan 21 only transmits rotation to the pinch roller 31, and slides on the cleaning tape 12 to feed it. It's not a thing. Numerals 33 and 33 are friction belts made of a liquid-absorbing material with high surface friction such as felt attached to the circumferential body surface of the roller 32, which ensures the feeding force of the cleaning tape 12, and
The cleaning liquid squeezed out from the cleaning tape 12 is absorbed, and the cleaning liquid is applied to both rollers 3.
This prevents the liquid from flowing into the cassette 1 along the lines 1 and 32.

This device is constructed as described above, and when the cassette 1 is inserted into the cassette insertion slot, the pinch roller 31 is driven and rotated by the capstan 21, and the roller 32 that is in contact with the pinch roller 31 is also rotated, so that both rollers 31, 32 are rotated. The cleaning tape 12 is fed and the magnetic head 16 is cleaned. At that time, use the cleaning tape 12 as described above.
Since the pinch roller 31 circulates along the recessed central portion 31a of the pinch roller 31, the cleaning liquid impregnated in the cleaning tape 12 is not squeezed out and attached to the capstan 21. Note that in each of the above embodiments, the same components are given the same reference numerals.

(Effects of the Invention) As explained above, the eight-track cassette cleaning device according to the present invention inserts the capstan 21 through the pinch roller 5 rotatably provided in the capstan insertion opening 2 formed in the front wall of the cassette 1. Wet cleaning tape feeding rollers 10 and 11 which are indirectly driven and rotated by the rollers 10 and 11 are rotatably provided.
The rollers 10, 11 are stretched along the rollers 10, 11.
Since the cleaning tape 12 is fed by the sliding friction force between the cleaning tape 12 and the cleaning tape 12, the cleaning liquid impregnated in the cleaning tape 12 is squeezed out by the capstan 21 and the pinch roller 5 and adheres to the capstan 21. It is possible to prevent the water from flowing down along the capstan 21 toward the deck.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a perspective view of an 8-track cassette cleaning device, Figures 2 and 3 are a plan view and side view of the main parts, respectively, and Figures 4 and 5 are perspective views of other embodiments of the present invention. diagram and side view,
6, 7, and 8 are respectively a perspective view, a plan view, and a side view of still another embodiment of the present invention, and FIGS. 9a and 9b are a partial plan view and a partial side view of the conventional one. . 1...Cassette, 2...Capstan insertion slot,
3... Magnetic head insertion slot, 4... Track switching sensor insertion slot, 5, 31... Pinch roller, 1
0, 11, 25, 32... Wet cleaning tape feeding roller, 12... Wet cleaning tape, 11, 26, 32... Liquid retaining roller.

Claims (1)

[Scope of utility model registration request] A capstan insertion port 2, a magnetic head insertion port 3, and a track switching sensor insertion port 4 are formed in the front wall of the cassette 1. A pinch roller 5 is rotatably provided in the capstan insertion port 2, and a pinch roller 5 is rotatably provided in the capstan insertion port 2. And an 8-track cassette cleaning device in which a wet cleaning tape 12 is fed along the track switching sensor insertion opening 4, and a liquid retaining liquid 11 with which the cleaning tape 12 comes into sliding contact is provided in the cassette 1. wet cleaning tape feeding rollers 10 and 11 that are indirectly driven and rotated by the capstan 21 via the pinch roller 5;
is rotatably provided, the wet cleaning tape 12 is stretched along the rollers 10 and 11, and the cleaning tape 12 is fed by the sliding friction force with the rollers 10 and 11. Mold cassette type cleaning device.