JPH06111253A - Head cleaner device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to propose a head cleaner device capable of sufficiently cleaning the surface of a fixed head. A fixed head 10 is disposed on a tape traveling path, and a surface of which is in sliding contact with the tape has a curved surface across the width direction of the tape traveling direction, and an end portion is provided on a center line of curvature of the curved surface of the fixed head. This is defined as a rotation fulcrum A, and the other end of the rotation arm 11 is provided with a rotation arm 11 provided with a cleaner member 13 that rotates in association with the driving of the loading motor so as to be capable of sliding contact with the curved surface of the fixed head. While rotating the cleaner member 13 by elastically abutting on a loading base that drives the reciprocating arm 11,
Rotate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cleaner device suitable for use in cleaning fixed heads, for example in video tape recorders.

[0002]

2. Description of the Related Art Conventionally, a cleaning device for a fixed head has one end of an arm member as a fulcrum of rotation, a central portion of the arm member is connected to a reciprocating drive mechanism such as a solenoid, and a cleaning member is provided at the other end of the cleaning device. When the recorder is not in operation, the cleaning of the fixed head is carried out by reciprocating the cleaning member on the surface of the tip of the fixed head.

[0003]

However, in the above-mentioned apparatus, the relative speed between the fixed head and the cleaning member is low at the time of cleaning, so that the cleaning is not sufficiently performed. Further, the surface of the tip of the fixed head has a nose having a constant curved surface in the tape running direction, and the wrap angle representing the contact portion with the tape is about 20 degrees, so not only the gap portion in the center of the head, There is a problem that it is impossible to sufficiently clean the entire surface including the wrap angle. The present invention has been made in view of the above point, and an object thereof is to propose a head cleaner device capable of sufficiently cleaning the surface of the fixed head.

[0004]

The head cleaner device of the present invention comprises the following means as shown in FIGS. 1 to 3, for example. According to the present invention, the fixed head 10 that is disposed on the tape running path and has a surface that comes into sliding contact with the tape has a curved surface over the width direction of the tape running direction, and an end portion on the centerline of the curvature of the curved surface of the fixed head 10. The rotation arm 11 is provided with this as a rotation fulcrum A, and the cleaner member 13 is provided at the other end so as to be slidably contactable with the curved surface of the fixed head 10.
The fixed head 10 is cleaned by rotating the rotating arm 11. In the present invention,
In the above invention, the cleaner member 13 provided on the other end of the rotating arm 11 is rotated. Further, in the present invention, in the above-mentioned invention, the rotating arm 11 is rotated by elastically contacting the loading base 7 which is driven to move back and forth. Further, in the present invention, in the above-mentioned invention, the cleaner member 13 provided on the other end of the rotating arm 11 rotates in association with the driving of the loading motor 5. Further, in the present invention, in the above-mentioned invention, the cleaner member 13 provided at the other end of the rotating arm 11 rotates in association with the gear C fixed to the rotating fulcrum A of the rotating arm 11.

[0005]

According to the present invention described above, the following operations are performed. According to the present invention, by rotating the rotary arm 11, the cleaner member 13 cleans the fixed head 10 while slidingly contacting the curved surface of the fixed head 10.
Further, according to the present invention, in the above-mentioned invention, the cleaner member 13 itself also rotates as the rotating arm 11 rotates.
Further, according to the present invention, in the above-mentioned invention, the rotating arm 11 rotates with the forward / backward drive of the loading base 7. Further, according to the present invention, in the above-mentioned invention, the cleaner member 13 is rotated by driving the loading motor 5. Further, according to the present invention, in the above-described invention, the cleaner member 13 rotates by revolving around the gear C fixed to the rotation fulcrum A of the rotation arm 11.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the head cleaner device of the present invention will be described in detail below with reference to FIGS.

First, the configuration of an embodiment of the head cleaner device of the present invention will be described. In FIG. 1, reference numeral 1 denotes a capstan motor, which drives a supply-side reel stand 2 or a winding-side reel stand 3 by a gear mechanism (not shown) to rotate a tape 4 through a tape guide P1 to P6. Is a drive source for traveling on the route. A loading motor 5 is a drive source for loading or unloading the tape by moving the supply-side base 6 and the winding-side base 7 along a predetermined path. 8 is a rotary drum for recording and reproducing,
Is an erasing head, and 10 is a fixed head for controlling input / output of a time code signal, a control signal and an audio signal.

In FIGS. 2 and 3, reference numeral 11 denotes a rotating arm, which is supported so as to be rotatable about a rotating shaft A and has a spring 1.
It is biased counterclockwise by 2. Rotating arm 11
A drive roller CR pivotally attached to the rotating shaft B is provided at the tip end of the rotating shaft B, and is connected to the loading motor 5 through a gear mechanism such as a gear C and a gear D. The rotation of the loading motor 5 causes the rotating shaft B to rotate. Is designed to rotate. Further, a manual drive gear M is connected to the gear C via another gear, and the manual drive gear M is connected to the loading motor 5 via reduction gears G1 and G2, which allows fine adjustment by manual operation. Has become.

A cylindrical cleaner 13 made of foamed polyurethane is fixed to the upper end of the rotary shaft B with an adhesive. The outer peripheral surface of the cleaner 13 is provided so as to have a diametrical width sufficient for sliding contact with the curved surface of the tip portion of the fixed head 10, and the width of the cleaner 13 in the longitudinal direction of the rotation axis B is the same as that of the fixed head 10. It is provided wider than the tape running width.

The drive roller CR provided at the tip of the rotatable arm 11 over the rotatable range is located on the advancing path of the winding-side base 7 during loading, and the rotatable arm 11 is Rolling side base 7 near the tip
The spring 12 rotates clockwise against the urging force of the spring 12 in the counterclockwise direction. Here, the rotation arm 11 has a rotation range from the initial position to the maximum rotation position at an angle including the curved surface of the tip portion of the fixed head 10.

An embodiment of the head cleaner device of the present invention is constructed as described above and operates as follows.
When the tape is mounted on the supply-side reel base 2 and the winding-side reel base 3, the loading motor 5 starts driving to move the supply-side base 6 and the winding-side base 7 along a predetermined path. The tape is so-called M-loaded. At this time, since the drive roller CR provided at the tip of the rotating arm 11 is located on the advancing path of the winding-side base 7, the advancing of the winding-side base 7 causes the winding-side base 7 to move. While the base 7 is in contact with the drive roller CR provided at the tip of the rotating arm 11, the rotating arm 11 is moved from the initial position to the maximum rotating position against the counterclockwise biasing force of the spring 12. Rotate clockwise. At this maximum turning position, the drive roller CR provided at the tip of the turning arm 11 is disengaged from the tape running path, so that the tape running is not damaged.

At the same time, the rotation of the loading motor 5 causes the rotation shaft B to rotate counterclockwise through a gear mechanism (not shown). Since a cylindrical cleaner 13 made of foamed polyurethane is fixed to the upper end of the rotary shaft B by an adhesive, the outer peripheral surface of the cleaner 13 rotates counterclockwise while sliding on the curved surface of the tip of the fixed head 10. Contact.

When the tape is unloaded,
The operation in the opposite direction to the operation at the time of loading described above is performed. That is, when the winding-side base 7 is retracted from its advanced position due to the reverse rotation of the loading motor 5, the drive roller CR provided at the tip of the rotating arm 11 that is in contact with this is the spring 12 of the drive roller CR. It rotates counterclockwise from its maximum rotation position to the initial position according to the counterclockwise biasing force.

At the same time, the rotation of the loading motor 5 in the opposite direction causes the rotation shaft B to rotate clockwise through a gear mechanism (not shown). The outer peripheral surface of the cylindrical cleaner 13 made of foamed polyurethane fixed to the upper end of the rotary shaft B is in sliding contact with the curved surface of the tip of the fixed head 10 while rotating clockwise.

As described above, in this embodiment, when the tape is loaded and unloaded, the cleaner 13 itself is rotated by using the loading drive mechanism so that the curved surface of the tip of the fixed head 10 is moved in the tape running direction. It can be slidably contacted.

Further, in the above-mentioned embodiment, the example in which the rotational force of the rotating shaft B is obtained from the loading motor 5 is shown. However, the gear mechanism for transmitting the rotational force from the loading motor 5 is eliminated, and in FIG. If C is fixed, the winding side base 7 during loading or unloading
When the rotating arm 11 is rotated by the forward / backward movement of the gear, the gear D
Can revolve around the gear C, rotate the rotating shaft B, and rotate the cleaner 13 without the driving force from the loading motor 5. At this time, the gear C has a small diameter,
If the reduction ratio is increased by increasing the diameter of the gear D, the rotation of the cleaner 13 can be increased.

In the above-described embodiment, the winding-side base 7
Is a drive roller C provided at the tip of the rotating arm 11.
An example is shown in which the rotating arm 11 is rotated clockwise from the initial position to the maximum rotating position against the counterclockwise biasing force of the spring 12 while contacting the R. The base 7 may be brought into direct contact with the rotating arm 11.

Further, in the above-described embodiment, the cleaning of the fixed head 10 has been described, but it goes without saying that the erasing head 9 can also be cleaned by the same configuration.

The above embodiment is an example of the present invention.
It goes without saying that various other configurations can be adopted without departing from the scope of the present invention.

[0020]

According to the present invention described above, the following effects can be obtained. According to the present invention, a fixed head that is disposed on a tape traveling path and has a surface that is in sliding contact with the tape has a curved surface over the width direction of the tape traveling direction, and an end portion on the center line of the curvature of the curved surface of the fixed head. Is provided as a fulcrum of rotation, and the other end of the rotary arm is provided with a cleaner member slidably in contact with the curved surface of the fixed head, and the rotary arm is rotated. It can be sufficiently cleaned over a curved surface. Further, according to the present invention, since the cleaner member itself provided at the other end of the rotating arm is rotated, the relative speed between the curved surface of the fixed head and the cleaner member can be increased, and the density can be increased at high speed. High cleaning is possible. Further, according to the present invention, since the rotating arm rotates by elastically contacting the loading base that is driven forward and backward, it is not necessary to provide another drive source for the rotating arm, and it is possible during loading and unloading. Since it can be cleaned, it is not necessary to provide a dedicated cleaning time. Further, according to the present invention, since the cleaner member provided at the other end of the rotating arm rotates in association with driving of the loading motor, the rotating arm rotates during loading and unloading, and the cleaner member rotates. Since it is possible to rotate, it is not necessary to provide a drive source for rotating only the cleaning member. Further, according to the present invention, since the cleaner member provided at the other end of the rotating arm rotates in association with the gear fixed to the rotation fulcrum of the rotating arm, it is possible to drive only the rotation of the cleaner member. It is not necessary to provide another source, and the rotation of the rotation arm can be used to rotate the cleaner member.

[Brief description of drawings]

FIG. 1 is a plan view of a video tape recorder equipped with an embodiment of a head cleaner device of the present invention.

FIG. 2 is a partially enlarged plan view showing a main part of one embodiment of the head cleaner device of the present invention in FIG.

FIG. 3 is a partially omitted side view of an embodiment of the head cleaner device of the present invention in FIG.

[Explanation of symbols]

 5 Loading Motor 7 Rolling Side Base 10 Fixed Head 11 Rotating Arm 12 Spring 13 Cleaner A Rotating Axis B Rotating Axis C Gear CR Driving Roller

Claims (5)

[Claims] 1. A fixed head which is arranged on a tape running path and has a surface in sliding contact with the tape which has a curvature surface over the width direction of the tape running direction, and an end portion on the center line of curvature of the curvature surface of the fixed head. A rotary arm provided with the cleaner as a rotation fulcrum and a cleaner member slidably contacting the curved surface of the fixed head at the other end, and the fixed arm is cleaned by rotating the rotary arm. A head cleaner device characterized by: 2. The head cleaner device according to claim 1, wherein the cleaner member provided on the other end of the rotating arm is rotated. 3. The head cleaner device according to claim 2, wherein the rotating arm is rotated by elastically contacting a loading base that is driven to move back and forth. 4. The head cleaner device according to claim 2, wherein the cleaner member provided at the other end of the rotating arm rotates in association with driving of a loading motor. 5. The cleaner member provided at the other end of the rotating arm rotates in association with a gear fixed to a rotation fulcrum of the rotating arm. Head cleaner device.