JPH0433536Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lead wire drawing structure for a reversible head in which the magnetic head rotates 180 degrees.

[Prior art]

Conventionally, the magnetic head is controlled depending on the running direction of the tape.
The lead wire of a reversing magnetic head that rotates 180 degrees is passed through the center through hole of the rotating member to which the magnetic head is fixed, as shown in Japanese Utility Model Application No. 59-45727, and the magnetic head is directly fixed to the terminal plate on the back side. Or it was connected by soldering to a relay terminal board fixed to the frame.

Therefore, it is difficult to assemble as it requires passing the lead wire through the through hole, the hollow shaft is expensive, and when replacing the magnetic head, if a connector is connected to the lead wire, the lead wire must be unsoldered. The drawback was that the assembly work was extremely troublesome.

[Purpose of invention]

In view of the above drawbacks, the present invention draws out the lead wire through a U-shaped groove formed in the frame and communicates with the outside, thereby reducing costs by not using a hollow shaft, and omitting the work of passing the lead wire through the hollow shaft. It is an object of the present invention to propose a lead wire drawing structure for a reversing head which facilitates replacement of the magnetic head and improves assembly workability.

[Structure of the idea]

The present invention includes a rotating member that supports a magnetic head and has a rotating shaft, a bearing section that is provided on a frame and rotatably supports the rotating shaft, and a bearing section that is formed on the outside of the bearing section and that is connected to the outside of the frame. The apparatus includes a communicating U-shaped groove and a reversing gear integrally attached to the end of the rotating shaft, and the lead wire of the magnetic head is drawn out through the groove.

〔Example〕

Hereinafter, the present invention will be explained with reference to an illustrated embodiment. As shown in FIGS. 1 to 3, the reversing head has a lead wire drawing structure in which a bearing portion 2 is fixed to the center of a frame 1, and a rotating shaft 4 of a rotating member 3 is rotatably supported. The magnetic head 5 is attached to the rotating member 3 by a fixing screw 10.
It is fixedly supported. A U-shaped groove portion 1a is formed in the frame 1 outside the bearing portion 2. A reversing gear 6 is attached to the end of the rotating shaft 4 that has passed through the bearing 2, and the reversing gear 6 is integrally formed with a pull-out portion 6a, and the pull-out portion 6a passes through the groove portion 1a. Notch 3a of rear rotating member 3
It is fitted in. A printed circuit board 11 is fixed to the back side of the magnetic head 3, and lead wires 13 to which a connector 12 is connected are soldered and connected, and the lead wires 13 are placed on the rear side so as to be fitted into the grooves of the drawer portion 6a. It's being pulled out.

A sector gear 7 that meshes with the reversing gear 6 is rotatably supported on the frame 1 by a screw shaft 14.
A reversing spring 8 is attached to the sector gear 7, and the reversing spring 8 is engaged with an engaging portion 9a of a reversing member 9 that is provided on a chassis 15 to which the frame 1 is fixed so as to be slidable left and right. . A compression spring 16 is mounted on the frame 1, and azimuth adjustment screws 17, 17 screwed into the frame 1 are pressed upward, and the rotating member 3 is provided with an azimuth adjustment protrusion 3b.

When the reversing head lead wire drawing structure is configured as described above, when the magnetic head 5 is replaced, the magnetic head 5 is removed from the rotating member 3 by removing the fixing screw 10, and the lead wire 13 is pulled out. By pulling it out from the portion that communicates the groove of the portion 6a and the U-shaped groove portion 1a with the outside of the frame 1, it can be removed and replaced very easily, and the assembly work efficiency is improved. Furthermore, since no hollow shaft is used, parts costs are reduced.

Furthermore, if the lead wires are passed through the hollow shaft as in the conventional case, the lead wires 13 will be twisted when the magnetic head 5 is turned over by 180 degrees, but if they are fitted into the pull-out portion 6a, they will not be twisted. , wire breakage can be prevented simply by shaking the free part.

In the above description, when the lead wire 13 is passed through the groove 1a of the frame 1, it is pulled out so as to fit into the pull-out part 6a of the reversing gear 6, but
The lead wire 13 may be freely passed through the groove portion 1a and drawn out by omitting part or all of the portion a.

[Effect of idea]

Since the present invention is constructed as described above, a reversing head lead wire drawing structure has been created which has excellent practical effects such as extremely easy replacement of the magnetic head, improved assembly workability, and reduced parts cost. can be provided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a rear view of the lead wire pull-out structure of the reversing head, and Fig. 2 is a view of the reversing gear being rotated so that the lead wire is in the highest position. A partial cross-sectional side view, and FIG. 3 is an exploded perspective view. 1... Frame, 1a... U-shaped groove, 2...
... Bearing part, 3 ... Rotating member, 4 ... Rotating shaft, 5 ...
...magnetic head, 6...reversing gear, 13...lead wire.

Claims (1)

[Scope of utility model registration request] a rotating member that supports a magnetic head and has a rotating shaft; a bearing provided on the frame that rotatably supports the rotating shaft; and a U-shape formed on the outside of the bearing that communicates with the outside of the frame. A lead wire drawing structure for a reversing head, comprising: a shaped groove portion; and a reversing gear integrally attached to an end of the rotating shaft, and the lead wire of the magnetic head is drawn out through the groove portion.