JP3239470B2 - Head cleaner device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaner device suitable for use, for example, for cleaning a fixed head in a video tape recorder.

[0002]

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

[0003]

However, in the above-described apparatus, cleaning is not performed sufficiently because the relative speed between the fixed head and the cleaning member is low during cleaning. Also, the surface of the tip of the fixed head has a nose having a constant curved surface over the tape running direction, and the wrap angle representing the contact portion with the tape is about 20 degrees. There is a problem that the entire surface including the wrap angle cannot be sufficiently cleaned. The present invention has been made in view of the above, and an object of the present invention is to propose a head cleaner device that can sufficiently clean the surface of a fixed head.

[0004]

The head cleaner of the present invention comprises, for example, as shown in FIGS. 1 to 3, the following means. In the present invention, a fixed head 10 that is disposed on a tape running path and has a surface that is in sliding contact with the tape and has a curvature surface over the width direction of the tape running direction, and has an end portion on the center line of the curvature of the curvature surface of the fixed head 10. A rotating arm 11 having a cleaner member 13 provided at the other end thereof so as to be able to slide on the curvature surface of the fixed head 10.
When rotating the rotating arm 11,
The rotating member 13 in the direction opposite to the rotating direction of the rotating arm 11.
The fixed head 10 is cleaned by rotating . Further, according to the present invention, in the above-mentioned invention, the rotation arm
The rotation of the cleaner 11 and the rotation of the cleaner member 13
Loading motor for loading the tape running path
It is performed based on the drive of .

[0005]

According to the present invention described above, the following operations are performed. According to the present invention, by rotating the rotating arm 11, the fixed head 10 is cleaned while the cleaner member 13 is in sliding contact with the curvature surface of the fixed head 10.
According to the present invention, in the above-described invention, the cleaner member 13 itself rotates together with the rotation of the rotating arm 11.
Further, according to the present invention, in the above-described invention, the turning arm 11 turns in accordance with the forward / backward driving of the loading base 7. Further, according to the present invention, in the above-described invention, the cleaner member 13 is rotated by the driving of 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 a head cleaner according to the present invention will be described below in detail with reference to FIGS.

First, the structure of one embodiment of the head cleaner device of the present invention will be described. In FIG. 1, reference numeral 1 denotes a capstan motor, which rotates a supply reel base 2 or a take-up reel base 3 by means of a gear mechanism (not shown) to rotate the tape 4 in a predetermined manner via tape guides P1 to P6. It is a driving source for traveling on a route. Reference numeral 5 denotes a loading motor, which is a drive source for loading or unloading the tape by moving the take-up base 6 and the supply base 7 along a predetermined path. Reference numeral 8 denotes a rotating drum for recording and reproducing, and 9
Denotes an erasing head, and 10 denotes a fixed head, which controls input and output of a time code signal, a control signal, and an audio signal.

In FIG. 2 and FIG. 3, reference numeral 11 denotes a pivot arm, which is rotatably supported about a pivot axis A,
2 urged counterclockwise. Rotating arm 11
Is provided with a driving roller CR mounted on a rotating shaft B at a tip end thereof, and is connected to the loading motor 5 via a gear mechanism such as a gear C and a gear D. The rotation of the rotating shaft B 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. Has become.

At the upper end of the rotating shaft B, a columnar cleaner 13 made of foamed polyurethane is fixed with an adhesive. The outer circumferential surface of the cleaner 13 is provided so as to have a width in the diametric direction sufficient to slide on the curved surface of the distal end portion of the fixed head 10, and the width in the length direction of the rotation axis B of the cleaner 13 is It is provided wider than the tape running width.

A driving roller CR provided at the distal end of the rotating arm 11 over its rotatable range is located on the path of the take-up side base 6 at the time of loading. Take-up base 6 near
And rotates clockwise against the biasing 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 distal end portion of the fixed head 10.

One embodiment of the head cleaner device of the present invention is configured as described above, and operates as follows.
When the tape is mounted on the supply-side reel base 2 and the take-up reel base 3, the loading motor 5 starts to drive, so that the take-up base 6 and the supply- side base 7 are moved along a predetermined path. Is so-called M loading. At this time, the drive roller CR, which is provided at the distal end of the pivot arm 11 and are located on the advance path of the take-up side base 6, the advancement of the take-up side base 6, the winding-side base 6 While abutting against a driving roller CR provided at the tip of the rotating arm 11, the rotating arm 11 is further moved clockwise from its initial position to the maximum rotating position against the counterclockwise urging force of the spring 12. Rotate. At this maximum rotation position, the drive roller CR provided at the tip of the rotation arm 11 is displaced from the tape traveling path, so that there is no obstacle to tape traveling.

At the same time, the rotation of the loading motor 5 causes the rotation shaft B to rotate counterclockwise via a gear mechanism (not shown). At the upper end of the rotating shaft B, a columnar cleaner 13 made of foamed polyurethane is fixed by an adhesive, so that the outer peripheral surface of the cleaner 13 slides on the curved surface of the front end of the fixed head 10 while rotating counterclockwise. Touch

When unloading the tape,
The operation in the direction opposite to the above-described operation at the time of loading is performed. That is, when the take-up side base 6 retreats from its advanced position due to the rotation of the loading motor 5 in the reverse direction, the drive roller CR provided at the tip end of the rotating arm 11 abutting on the take-up base 6 reverses the spring 12. It rotates counterclockwise from its maximum rotation position to its initial position according to the clockwise urging force.

At the same time, the rotation of the loading motor 5 in the reverse direction causes the rotation shaft B to rotate clockwise via 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 rotating shaft B slides on the curved surface at the tip end of the fixed head 10 while rotating clockwise.

As described above, in the present embodiment, during loading and unloading of the tape, the curved surface of the leading end of the fixed head 10 is moved by the length of the tape running direction while rotating the cleaner 13 itself using the loading drive mechanism. Can be in sliding contact with each other.

Further, in the above-described embodiment, an example has been described in which the rotational force of the rotating shaft B is obtained from the loading motor 5, but 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
With the rotation of the rotation arm 11 due to the forward and backward movement of the gear, the gear D
Revolves around the gear C, and can rotate the rotary 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 embodiment described above, the winding-side base 6
Is a drive roller C provided at the tip of the rotating arm 11.
The example in which the rotating arm 11 is rotated clockwise from its initial position to the maximum rotating position against the urging force of the spring 12 in the counterclockwise direction while abutting on the R has been described. 6 may directly contact the rotating arm 11.

Furthermore, in the above-described embodiment, the cleaning of the fixed head 10 has been described. However, it is needless to say that the erasing head 9 can 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 spirit 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 disposed on a tape running path and having a surface which is in sliding contact with the tape and having a curvature surface over the width direction of the tape running direction, and an end portion on the center line of the curvature of the curvature surface of the fixed head. A rotating arm having a cleaner member provided at the other end so as to be able to slide on the curvature surface of the fixed head, and rotating the rotating arm. Cleaning can be sufficiently performed over the curvature 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 curvature surface of the fixed head and the cleaner member can be increased, and the density can be increased at a high speed. High cleaning becomes possible. Further, according to the present invention, since the rotating arm rotates by elastically contacting the loading base that moves forward and backward, there is no need to provide another drive source for the rotating arm. Since cleaning can be performed, it is not necessary to provide a dedicated cleaning only. Further, according to the present invention, the cleaner member provided at the other end of the rotating arm rotates in association with the driving of the loading motor, so that the cleaner member rotates together with the rotation of the rotating arm during loading and unloading. Can be rotated, so that there is no need to provide another drive source for rotating only the cleaning member. Further, according to the present invention, the cleaner member provided at the other end of the rotating arm rotates in relation to the gear fixed to the rotating fulcrum of the rotating arm, so that only the rotation of the cleaner member is driven. There is no need to provide another source, and the cleaner member can be rotated using the rotation of the rotation arm.

[Brief description of the drawings]

FIG. 1 is a plan view of a video tape recorder to which one embodiment of a head cleaner device of the present invention is mounted.

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. 1;

FIG. 3 is a partially omitted side view of one embodiment of the head cleaner device of the present invention in FIG. 2;

[Explanation of symbols]

Reference Signs List 5 Loading motor 6 Take-up side base 10 Fixed head 11 Rotating arm 12 Spring 13 Cleaner A Rotating axis B Rotating axis C Gear CR Drive roller

Claims (2)

(57) [Claims] 1. A fixed head which is disposed on a tape traveling path and has a surface which is in sliding contact with the tape and has a curvature surface over a width direction of the tape traveling direction, and an end portion which is located on a center line of a curvature of the curvature surface of the fixed head. A rotating arm having a rotating fulcrum provided at the other end thereof and a cleaner member slidably provided on the curvature surface of the fixed head , wherein the cleaner member is rotated when rotating the rotating arm.
Is rotated in the direction opposite to the rotation direction of the rotation arm.
Head cleaner apparatus characterized by cleaning the more fixed head. 2. The rotation of the rotation arm and the cleaner.
The rotation of the member moves the tape to the tape running path.
Based on the driving of the loading motor
Head cleaner apparatus according to claim 1, wherein the dividing.