JPH0810837Y2 - Head cleaner - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a head cleaner that removes dirt from the head with a cleaning tape supplied with a cleaning liquid, and takes measures to prevent excess cleaning liquid from flowing into the case. It is a thing.

[Conventional technology]

As a head cleaner of this type, for example, as shown in FIGS. 11 and 12, a support arm 13 is arranged in the front-rear direction between the delivery hub 4a in the main body case 1 and the case side wall 10 facing the delivery hub 4a. On the rear end side of the support arm 13, an open top type liquid reservoir 15 in which the supply liquid 12 for supplying the cleaning liquid to the cleaning tape 3 is mounted is formed, and on the front end side of the support arm 13, the supply liquid 12 is formed. There is one that horizontally swings around the shaft 14 so as to contact and separate from the cleaning tape 3 (actual flat-blade 2-
42203).

In this way, in the main body case 1, the support arm 13
By adopting a structure in which the front end side of the above is horizontally swingably supported by the shaft 14 and the liquid supply 12 is provided at the rear end side thereof, a narrow space is provided between the feeding hub 4a and the case side wall 10 facing the feeding hub 4a. Also, a swing space for the liquid supply 12 can be secured, which is advantageous in assembly.

[Problems to be solved by the device]

However, the upper end surface 13a of the root of the support arm 13 and the liquid reservoir 15 and the upper end surface 15a of the liquid reservoir 15 are formed in the same plane. Therefore, there is no problem in the case where the head cleaner is loaded in a horizontal position on a stationary video tape recorder (VTR), but in the case of a camera-integrated video (movie), the head cleaner is placed under this front cover 7. In this case, the cleaning liquid in the liquid reservoir 15 is placed on the upper end surface 15a of the liquid reservoir 15 and is flush with the upper end surface 13a of the root of the support arm 13 in order to load the cleaning liquid in the vertical position. It will spread to the front and will flow forward as indicated by arrow B. In this way, the cleaning liquid flowing out to the front inside the main body case 1 adheres to the cleaning tape 3 more than necessary in the front inside the main body case 1, and further flows to the deck side so that the cleaning mechanism such as a loading mechanism or a guide mechanism in the deck is A problem of melting the lubricating oil of the internal mechanism was confirmed.

Such a forward flow of the cleaning liquid is also due to the support arm 13 protruding straight from the front end side of the peripheral wall of the liquid reservoir 15 to the front.

According to the present invention, as described above, the support arm 13 arranged in the front-back direction between the feeding hub 4a in the main body case 1 and the case side wall 10 uses the front end side as a swing fulcrum and stores the liquid at the rear end side. Department
In a head cleaner having 15 parts, by adding a shape improvement to the root part of the support arm 13 with the liquid reservoir part 15, it is possible to prevent excessive adhesion to the cleaning tape 3 at the time of loading to the deck and to the deck. The purpose is to prevent the flow of water.

[Means for solving the problem]

In the head cleaner of the present invention, for example, as shown in FIG. 1, the upper end surface 13 of the root of the support arm 13 with respect to the liquid reservoir 15 is formed.
The reference character a is formed to be lower than the height of the upper end surface 15a of the liquid reservoir 15 and has a step h between the upper end surfaces 13a and 15a.

[Action]

In this case, when the head cleaner is loaded on the deck in a vertical posture, the cleaning liquid overflowing from the liquid reservoir 15 drops on the upper end surface 15a of the support arm 13 and travels above the upper end surface 13a of the support arm 13 to the front side. There will be no excessive flow to.

〔Example〕

An embodiment of the head cleaner according to the present invention will be described with reference to FIGS.

In FIGS. 1 and 2, the main body case 1 of the head cleaner of this embodiment has substantially the same form as the VHS cassette, and the upper and lower cases 1a and 1b made of plastic are butted and integrated with each other with a screw P or the like. And the flanged hubs 4a and 4b for feeding and winding the cleaning tape 3 around the central portion of the lower case 1b are rotatably arranged. On the front side of the main body case 1, tape guide members 5 are provided on the left and right, and a tape loading pocket 6 is provided between the tape guide members 5 and 5. The cleaning tape 3 is led out from one feeding hub 4a to the pocket 6 via the tape guide member 5 in front of it.
The tape is wound around the other winding hub 4b located behind the other tape guide member 5. On the front side of the main body case 1, a front lid 7 for covering and protecting the lead-out portion of the cleaning tape 3 when not in use is pivoted 9 (left pivot 9
(Not shown) is pivotally attached around the pocket 6
Can be opened and closed freely between a closed position (when not used) and an upward opened position (when used).

The mechanism so far is the same as the structure of the VHS cassette except that the cleaning tape 3 which replaces the magnetic tape is stored.

 Next, the mechanism specific to the head cleaner will be described.

1 and 2, the cleaning tape 3
In order to apply and supply the cleaning liquid to the main body case 1,
The liquid supply means 11 is arranged between the case side wall 10 on the left side of the and the feeding hub 4a. This liquid supply means 11 supports a front end side of a support arm 13 having a pad-shaped liquid supply 12 on its rear end side so as to be horizontally swingable by a shaft 14 standing from the lower case 1b.

On the rear end side of the support arm 13, an open top type liquid reservoir 15 is formed. The illustrated liquid reservoir 15 is a tubular first liquid reservoir 16
It is formed to have a and a second liquid storage portion 16b having a deep dish shape surrounding the outer periphery, and the liquid supply 12 is supplied to the first liquid storage portion 16a in a direction in which the tip portion 12a faces the cleaning tape 3. It is attached so that it protrudes.

The liquid supply 12 is made of a porous chamber material such as a sponge fiber mass, but may be one in which a sheet or a film body is provided with a large number of cuts to draw out and supply the cleaning liquid by a capillary phenomenon.

In the liquid reservoir 15, the second liquid is provided on the outer circumference of the first liquid reservoir 16a.
The liquid reservoir 16b is provided so that when the cleaning liquid is excessively injected into the first liquid reservoir 16a, the first liquid reservoir 16a is provided.
This is because the excess liquid overflowing from the reservoir is stored in the second liquid storage portion 16b so as not to be immediately spilled into the main body case 1.
A storage mat 1 that absorbs excess liquid in the second liquid reservoir 16b.
Embedded 7 However, the second as the liquid reservoir 15
It may be configured to include only the liquid reservoir portion 16b and to which the liquid supply 12 is attached.

The support arm 13 is integrally formed by projecting from the left end surface 15b of the peripheral wall of the liquid reservoir 15 facing the case side wall 10 toward the case side wall 10 once, and then bent forward at a substantially right angle to integrally extend. As shown in FIGS. 5 and 6, the upper end surface 13a of the root of the support arm 13 with respect to the liquid reservoir portion 15 is formed lower than the upper end surface 15a of the liquid reservoir portion 15 so that the distance between the upper end surfaces 13a and 15a is large. Step h
I am wearing. In this way, if the upper end surface 13a of the root portion of the support arm 13 is formed lower than the upper end surface 15a of the liquid reservoir 15, the support arm 13 is different from the one shown in the drawing.
It may be formed so as to extend forward from the front end surface 15c of the peripheral wall of 15.

In this case, when loading the deck, as shown in FIG. 7, when loading the cleaning liquid in the direction of the arrow A in a vertical posture with the front lid 7 on the lower side, the cleaning liquid is the second liquid storage portion of the liquid storage portion 15. If it overflows from 16b, this liquid will be
Even if it drops in the form of drops from 5a forward, it does not flow excessively forward along the upper end surface 13a of the support arm 13.

Further, in this case, the root portion of the support arm 13 is the liquid reservoir 15
It is possible to more reliably prevent the cleaning liquid overflowing from the liquid reservoir 15 from flowing over the upper end surface 13a of the support arm 13 if it is located on the left end surface 15b of the peripheral wall facing the case side wall 10. it can.

In addition, as shown in FIG. 8, when the left side case side wall 10 is placed in the vertical position in the vertical posture and is loaded in the direction of the arrow A, the cleaning liquid overflowing from the second liquid storage portion 16b of the liquid storage portion 15 is a liquid. Even if the liquid drops from the upper end surface 15a of the reservoir 15 onto the case side wall 10, it does not flow forward through the support arm 13 in the main body case 1. In this case, turn the support arm 13
If the bent portion 13b is formed in the shape of a square and the bent portion 13b is formed so as to come close to the side wall 10 of the case, even if the base 13 of the support arm 13 flows over the arm 13, the bent portion Since it drips from the portion 13b onto the side wall 10 of the case, it can be reliably prevented from flowing out forward in the main body case 1. As this shape, as shown in FIG. 9, the support arm 13 may meander in the middle, and in this case, the flowing length becomes longer than that in the case of the above-mentioned "C" shape, and the liquid The outflow prevention effect is high.

Further, as shown in FIG. 10, the fin-shaped projection 13c may be provided in the middle of the support arm 13 to prevent the flow of the cleaning liquid. At this time, the fin-shaped projections 13c and 13c
By narrowing the distance, the surface tension of the cleaning liquid can be used to stay and prevent its flow.

Incidentally, it is desirable that the support arm 13 is formed thin so that the width of the upper end surface 13a thereof is as narrow as possible in order to prevent the flow of the cleaning liquid. Further, the support arm 13 may be, for example, a wire having a circular cross section.

Such a support arm 13 horizontally swings around the shaft 14 in a liquid supply posture in which the tip 12a of the liquid supply 12 contacts the cleaning tape 3 on the peripheral surface of the feeding hub 4a and in a standby posture separated from the cleaning tape 3. You are free. Then, the support arm 13 includes the case side wall 10 on the left side and the support arm.
A spring 19 interposed between the spring 13 and 13 constantly swings and urges in the direction of the liquid supply posture.

As shown in FIG. 6, a liquid supply port 32 for injecting a cleaning liquid such as isopropyl alcohol is opened in a transparent window 31 provided in the upper case 1a. This liquid supply port 32 is a support arm.
It is set so as to be located right above the first liquid reservoir 16a when 13 is in the standby position. When the support arm 13 is in the standby position, the liquid supply 12 is separated from the cleaning tape 3. Therefore, even if the cleaning liquid is injected into the liquid supply port 32, the liquid supply 12 is transmitted to wet the cleaning tape 3. There is no.

The above-described posture change of the support arm 13 is performed by using the opening / closing operation of the front lid 7. Therefore, as shown in FIGS. 1 and 2, between the tip end side of the support arm 13 and the side piece 7a of the front lid 7, the opening / closing rotation of the front lid 7 is set to the standby posture of the support arm 13. Diversion mechanism 21 by lever 20 that changes to swing between liquid supply positions
Is provided. The middle of the lever 20 is horizontally swingably supported by a shaft 22 protruding from the upper case 1a, and a passive cam 23 provided at one end of the lever 20 is projected from a hole 24 in the left side wall 10 of the case to allow the front cover 7 to move. The pin 25 provided at the other end of the lever 20 is brought into contact with the side piece 7a of the above and is brought into contact with and separated from the side edge of the support arm 13. The lever 20 is always mounted in the direction in which the passive cam 23 projects from the hole 24 by the spring 26 mounted on the shaft 22 and the pin 25.
Is urged to swing away from the side edge of the support arm 13.

At this time, as shown in FIG. 2, when the front cover 7 is closed, the passive cam 23 has a hole 24 by the pressing action of the side piece 7a.
The lever 20 swings in the direction in which the pin 25 presses against the side edge of the support arm 13 by this pushing, and the support arm 13 is maintained in the standby posture. From this state, when the front lid 7 is opened as shown in FIG. 3, the side piece 7a thereof is separated from the passive cam 23, and the lever 20 is swung in the opposite direction by the spring 26 so that the passive cam 23 is opened in the hole 24. The support arm 13 so that the pin 25 projects from the side edge of the support arm 13
To switch to the liquid supply position.

In the liquid supply posture shown in FIG. 3, a cam roller 27 is rotatably provided on the support arm 13 for intermittently applying the cleaning liquid to the cleaning tape 3, while the periphery of the flange 29 attached to the upper end of the feeding hub 4a. Cam recess in part
Provide 30. The cam roller 27 is always in close contact with the peripheral edge of the flange 29 by the force of the spring 19, and in this state, the liquid supply 12
Is in a standby position away from the cleaning tape 3. At the time of head cleaning, the feeding hub 4a is rotated by the tape loading operation, so that the cam recess 30 as shown in FIG.
When the cam roller 27 falls into the inside, the liquid supply 12 comes into contact with the cleaning tape 3 to apply and supply the cleaning liquid, and when the cam recess 30 passes, the cam roller 27 becomes a flange.
It is pushed back on the periphery of 29 and returns to the standby position again. After that,
The cleaning liquid is applied and supplied to the cleaning tape 3 every one rotation of the hub 4.

In addition to the VHS method, the head cleaner of the present invention is
It goes without saying that the same applies to HS-C, 8mm video, or DAT decks.

[Effect of device]

According to the head cleaner of the present invention, the upper end surface 13a of the root of the support arm 13 with respect to the liquid reservoir 15 is the upper end surface 1 of the liquid reservoir 15.
By making the height lower than the height of 5a, it is possible to prevent the cleaning liquid overflowing from the liquid reservoir 15 from flowing through the support arm 13 to the front inside the main body case 1 at the time of loading on the deck. Therefore, it is possible to solve the problems that the overflowing cleaning liquid is excessively attached to the cleaning tape 3 or flows into the deck from the front inside the main body case 1 to melt the lubricating oil.

[Brief description of drawings]

1 to 8 show an embodiment of a head cleaner according to the present invention. FIG. 1 is a perspective view and FIG. 2 is a partially cutaway plan view showing a state in which a support arm is in a standby posture. 3, FIG. 3 is a plan view of relevant parts showing the support arm in a liquid supply posture, FIG. 4 is a plan view of relevant parts showing a state in which the cleaning liquid is applied to the cleaning tape, and FIG. FIG. 6 is a sectional view taken along line VV in the figure, FIG. 6 is a sectional view taken along line VI-VI in FIG. 2, and FIGS. 7 and 8 are schematic front views showing the loading posture on the deck. 9 and 10 are perspective views of a support arm showing another embodiment of the present invention. 11 and 12 show a conventional head cleaner, FIG. 11 is a plan view showing a partially cutaway state, and FIG. 12 is a cross-sectional view of an essential part. 1 …… Main body case, 3 …… Cleaning tape, 4a ……
Feeding hub, 4b …… Winding hub, 10 …… Case side wall, 12
…… Liquid supply, 13 …… Support arm, 13a …… Upper end surface of root of support arm, 14 …… Shaft, 15 …… Liquid reservoir, 15a ……
The upper end surface of the liquid reservoir, h ... step.

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right feeding and winding hubs (4a, 4b) around which a cleaning tape (3) is wound are rotatably accommodated in the main body case (1), and A support arm (13) is arranged in the front-rear direction between the delivery hub (4a) and the case side wall (10) facing the delivery hub, and the cleaning tape (3) is attached to the rear end side of the support arm (13). An open top type liquid reservoir (15) is formed on which the liquid supply (12) for supplying the cleaning liquid is attached. The liquid supply (12) is attached to the cleaning tape (3) on the front end side of the support arm (13). ) So that it contacts and separates from ()
In a head cleaner that is horizontally swingable, the upper end surface (13a) of the root of the support arm (13) with the liquid reservoir (15) is the upper end surface (15a) of the liquid reservoir (15). The head cleaner is characterized in that it is formed to be lower than the height of the above and has a step (h) between both upper end surfaces (13a, 15a).