JPH0110741Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cassette-type cleaning device for a recorder/player. A liquid absorbing member is attached to the periphery of the capstan insertion opening formed in the capstan, and the cleaning liquid flowing down along the outer surface of the capstan is collected by the liquid absorbing member.

The cassette of this type of cassette-type cleaning device is generally formed to have the same shape and size as a recording/playback cassette, so that the magnetic head can be cleaned by handling in the same manner as a recording/playback cassette. In other words, for such a cassette, 8
There are various types such as track cartridges, video cassettes, compact cassettes, and micro cassettes.For example, in the case of an 8-track type cassette-type cleaning device, as shown in Figure 7a, the cassette has the same shape as the 8-track type cassette for recording and playback. A cleaning tape 7b is placed in a cassette 7a of the same size and stretched around a pinch roller 7c rotatably provided on one side of the front of the cassette 7a. The capstan 7d contacts the pinch roller 7c and transmits rotation to the pinch roller 7c, and the pinch roller 7c and the capstan 7d feed the cleaning tape 7b to clean the front surface of the magnetic head 7e. . Thus, the capstan 7d is prevented from idling, and the cleaning tape 7b is formed by the capstan 7d and the pinch roller 7c.
In order to ensure the feeding force, this type of cleaning device is designed so that the capstan 7d comes into fairly strong pressure contact with the outer circumferential surface of the pinch roller 7c, and for this reason, the tape 7b is a wet tape, for example, a cleaning tape coated with isopropyl alcohol. In the case of cleaning by impregnating an appropriate amount of a predetermined cleaning liquid such as the above, when the tape 7b passes between the pinch roller 7c and the capstan 7d, the cleaning liquid impregnated into the tape 7b will be absorbed by both the pinch rollers 7c and the capstan 7d.
The cleaning liquid is squeezed out by c and 7d, and the squeezed cleaning liquid adheres to the capstan 7d, as shown in Fig. 7b.
As shown by the dotted arrow, the capstan 7 is driven by the deck-side motor 7f via the pulley 7g, belt 7h, and flywheel 7i.
d and tends to infiltrate the oil-impregnated bearing 7j of the capstan 7d, and when the oil contained in the bearing 7j deteriorates or becomes diluted due to such cleaning liquid, and the viscosity of the oil decreases, the oil contained in the bearing 7j Bearing 7 could no longer be held in place.
This has drawbacks such as oil leaking out of the bearing 7j, causing rust and preventing the capstan 7d from rotating smoothly, which may cause equipment failure.
Such drawbacks were also found in those in which the capstan 7d was driven by a rim, an idler, or the like. The same is true for cassette-type cleaning devices consisting of cassettes of the same shape and size as Philips-type compact cassettes, micro cassettes, etc., and when the cassettes are set on the deck,
A capstan and a pinch roller on the deck side enter the cassette through a capstan insertion opening and a pinch roller insertion opening formed in the cassette, and the capstan and pinch roller transport the wet cleaning tape, but at this time, the tape is impregnated. The cleaning liquid is squeezed out by the capstan and the pinch roller and flows down along the capstan toward the deck, which also has the drawback of causing failures in the drive system and the like.

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 cleaning device. The lower part of the capstan, which is inserted through the capstan insertion port, comes into sliding contact with the liquid absorbing member, and the liquid is squeezed out by the capstan and the pinch roller and reaches the outer surface of the capstan. The cleaning liquid flowing down along the deck toward the deck is collected by the liquid absorbing member. Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an eight-track type cassette-type 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; The shape and dimensions are the same as the well-known 8-track type cassette. 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 magnetic head The insertion port 3 and the sensor insertion port 4 are provided with pads 7, 7 attached to both ends of the spring plate 6. The capstan insertion opening 2 is formed by notching the front wall sides of both the upper and lower cases 1a, 1b, and further cutting shallowly into the main plates of the upper and lower cases 1a, 1b. (See also Figures 2 and 3). In addition, a liquid absorbing member 9 made of a material having appropriate liquid absorbing properties and elasticity, such as felt, is attached to the periphery of the capstan insertion opening 2 on the main plate side of the lower case 1b. The capstan 13 slightly enters the cassette 1 from the capstan insertion opening 2, slides on the pinch roller 5, transmits rotation to the pinch roller 5, and
The lower part of 3 is adapted to lightly slide into contact with the liquid absorbing member 9.

Reference numeral 10 denotes an endless wet cleaning tape, which is stretched around bosses 11, 11 erected at the center and one front side of the cassette 1 and the pinch roller 5. The magnetic head 15 is conveyed along each of the insertion openings 2, 3, and 4 formed in the magnetic head insertion opening 3, and comes into sliding contact with the front surface of the magnetic head 15 of the deck entered through the magnetic head insertion opening 3, thereby cleaning the magnetic head 15. ing. Reference numeral 16 denotes a bifurcated liquid-retaining material made of a liquid-retaining material such as felt, and the cleaning tape 10 runs inside the bifurcated portion, and is configured such that both surfaces of the cleaning tape 10 lightly slide against the inner surface of the bifurcated portion. A cleaning liquid supply port 17 is formed in the upper case 1a at a position directly above the liquid storage 16. When a few drops of the cleaning liquid are dropped from the supply port 17, the cleaning liquid infiltrates into the liquid storage 16. The cleaning tape 10 is supplied from the liquid storage 16. 8 is a capstan drive motor built into the deck, 18, 19,
20 is a pulley, a belt, a flywheel for transmitting the rotation of the motor 12 to the pinch roller 13;
12 is an oil-impregnated bearing.

This device is constructed as described above, and when the cassette 1 is inserted into the cassette insertion slot of the deck after the cleaning liquid is supplied, the magnetic head 15 enters from the magnetic head insertion slot 3 and its front surface is aligned with the cleaning tape 10. At the same time, the capstan 13 slightly enters the cassette 1 from the capstan insertion opening 2, contacts the pinch roller 5, transmits rotation to the pinch roller 5, and the capstan 1
The cleaning tape 10 is fed by the magnetic head 3 and the pinch roller 5, and the front surface of the magnetic head 15 is cleaned. At that time, as mentioned above, the capstan 13
In order to ensure the tape feeding force, the cleaning liquid impregnated in the cleaning tape 10 is squeezed out by the capstan 13 and the pinch roller 5 and adheres to the capstan 13. However, it flows downward to the capstan 13 (see the dotted line arrow in Figure 3).
As mentioned above, the lower part of the capstan 13 rotates while lightly sliding in contact with the liquid absorbing member 9 attached to the periphery of the capstan insertion port 2, so that the cleaning liquid flowing down along the entire outer circumferential surface of the capstan 13 is All of the liquid is collected by the liquid absorbing member 9 and does not reach the oil-impregnated bearing 12, so the oil-impregnated bearing 12
The oil inside will not deteriorate or become diluted. The liquid absorbing member 9 only lightly slides into contact with the capstan 13 to the extent that the liquid can be recovered, and therefore the liquid absorbing member 9 does not interfere with the rotation of the capstan 13.

4 to 6 show other embodiments of the present invention, in which 30 shows an upper case 30a and a lower case 3.
0b, its shape and dimensions are the same as the well-known Phillips type compact cassette, and the front wall has a pinch roller insertion opening 21,
21 and a magnetic head insertion opening 22 are formed, and capstan insertion openings 23, 23 corresponding to the pinch roller insertion openings 21, 21 are formed slightly behind the front surfaces of both the upper and lower cases 30a, 30b. Ring-shaped liquid-absorbing members 24, 24 made of a material having liquid-absorbing properties and elasticity, such as felt, are attached to the periphery of each capstan insertion port 23, respectively. When the capstan 25 is inserted, the lower outer peripheral surface of the capstan 25 comes into light sliding contact with the inner peripheral edge of the liquid absorbing member 24. 26 is a wet cleaning tape stretched along each of the insertion openings 21, 21, 22 in the cassette 30; 27;
is a pressure pad, 28, 28 is a drive shaft insertion port, 29a, 29b is a guide roller, 31, 31
are cleaning tape winding reels, 32 and 3
3 are a pinch roller and a magnetic head on the deck side, respectively. One guide roller 29a is made of a liquid retaining material such as felt, and a cleaning liquid supply hole 34 is formed in the corner of the upper case 30a corresponding to the roller 29a. Add a few drops of cleaning liquid,
The cleaning liquid is impregnated into the roller 29a,
The cleaning tape 26 is replenished.

In the above configuration, when the cassette 30 is set on the deck, the magnetic head 33 on the deck side moves forward and comes into contact with the cleaning tape 26.
The capstan 25 and the pinch roller 32 enter through the respective insertion openings 23 and 21 and come into contact with both sides of the cleaning tape 26, and the drive shaft insertion opening 2
The rotation of the drive shaft on the deck side that entered 8, 28,
By the rotation of the capstan 25 and the pinch roller 32, the cleaning tape 26 is fed toward the take-up reel 31, and the front surface of the magnetic head 33 is cleaned. At that time, the cleaning liquid impregnated into the cleaning tape 26 is squeezed out by the capstan 25 and the pinch roller 32.
The liquid flows down toward the deck (see the dotted line arrow in FIG. 6), but along the way, it is collected by the liquid absorbing member 24 that slides against the outer peripheral surface of the capstan 25. Note that the liquid absorbing member 24 also only lightly slides into contact with the outer circumferential surface of the capstan 13, and does not interfere with the rotation of the capstan 13.

Each of the above embodiments has been explained using as an example a cleaning device comprising a cassette of the same shape and size as the well-known 8-track type cassette or the Phillips-type compact cassette, but the device according to the present invention can be used with the well-known micro cassette, video cassette, etc. It can also be applied to a cleaning device consisting of cassettes of the same shape and size.

As explained above, in the present invention, the wet cleaning tape 10 is stretched inside the cassette 1, and the capstan 13 and the pinch roller 5 are brought into sliding contact with both sides of the cleaning tape 10.
In the cassette type cleaning device in which the cleaning tape 10 is fed by the pinch roller 5 and the pinch roller 5, the liquid absorbing member 9 is attached to the periphery of the capstan insertion opening 2 formed in the cassette 1. It is possible to prevent the cleaning liquid squeezed from the cleaning tape 10 from flowing down toward the deck along the capstan 13 and adversely affecting the drive system in the deck.

[Brief explanation of the drawing]

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 a side view of the main parts, respectively, Figure 4 is a perspective view of another embodiment of the present invention, and Figure 5 6 are a plan view and a side view of the main part, respectively, and FIGS. 7a and 7b are a plan view and a side view of the main part of the conventional type. 1,30...cassette, 2,23...capstan insertion slot, 5,32...pinch roller, 9,2
4...Liquid absorbing member, 10, 26...Wet cleaning tape, 13, 25...Capstan.

Claims (1)

[Scope of utility model registration request] A wet cleaning tape 10 is stretched inside the cassette 1, and a capstan 13 and a pinch roller 5 are brought into sliding contact with both sides of the cleaning tape 10, so that the cleaning tape 10 is fed by the capstan 13 and the pinch roller 5. In the cassette type cleaning device according to the present invention, a liquid absorbing member 9 is attached to the periphery of a capstan insertion opening 2 formed in the cassette 1.