JPH0320886Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is applicable to magnetic recording and reproducing devices such as video tape recorders that record on magnetic tape using the helical scan method or reproduce signals recorded on magnetic tape. This invention relates to a rotating magnetic head device used in an apparatus. (Prior Art) Generally used in video tape recorders to record signals on magnetic tape, or
A rotating magnetic head device for reproducing signals recorded on a magnetic tape was constructed as shown in FIG. That is, a rotating drum 1 and a fixed drum 2 are disposed on the same axis above and below, and the rotating drum 1 is attached to a rotating shaft 4 of a motor (not shown) via a disk 3 and rotated at high speed. At the same time, a pair of opposing magnetic heads 5, 5 are fixed to the peripheral edge of the rotating drum 1 by screws 6, 6. Further, a rotary transformer 7 is attached to the disk 3 to which the rotating drum 1 is attached and the fixed drum 2 so as to face each other, and the rotor side core 7a attached to the rotating drum 1 is magnetically connected to the rotor side core 7a by signal lines 8, 8. The rotary transformer 7 is connected to the heads 5, 5, so that signals can be transmitted between the rotating part and the fixed part without contact.

(Problems to be solved by the invention) However, in the above-mentioned conventional rotating magnetic head device,
The magnetic heads 5, 5 are arranged so that the rotating drum 1 can be easily replaced when the magnetic heads 5, 5 wear out.
The signal lines 8, 8 connecting the magnetic heads 5, 5 and the rotor side core 7a of the rotary transformer 7 are once pulled out onto the rotary drum 1, and connected to the magnetic heads 5, 5 and the rotor side core 7a by a substrate 9 provided on the disk 3. Since both of the signal lines 8, 8 drawn out were soldered, the signal lines 8, 8 became long, making them susceptible to external noise and attenuating the signal.

(Means for Solving the Problems) The present invention aims to eliminate the drawbacks of the above-mentioned conventional devices, and makes it possible to connect signal lines over the shortest distance without drawing them out onto the rotating drum. .

(Example) The present invention will be explained below according to the example shown in FIGS. 2 and 3. First, an L-shaped connecting pin 12 is soldered to a magnetic head 11 attached to a rotating drum 10 so as to come into contact with the peripheral surface of a rotary transformer 13. Further, a flexible printed circuit board 15 is bonded with adhesive to the circumferential surface of the rotor-side core 13a of the rotary transformer 13 attached to the rotating drum 10 via the disk 14, and coils 16, 1 for transmitting signals
6 are connected to each other, and the connecting pins 12 are soldered, and the magnetic head 11 and the rotor-side core 13a are electrically connected. Further, the disk 14 is fixed to a rotating shaft 17 of a motor (not shown), so that the rotating drum 10 can be rotated by the force of the motor. On the other hand, an opening 19 is provided on the circumferential surface of the fixed drum 18.
is provided so that a soldering iron 20 can be inserted for soldering the rotor-side core 13a and the connecting pin 12.

Therefore, in the rotating magnetic head device in the above embodiment, the magnetic head 11 and the rotary transformer 13
Since it is connected to the rotor side core 13a at the shortest distance, it is possible to prevent signal attenuation, and because it is shielded by the metallic rotating drum 10 and fixed drum 18, it is said to be less susceptible to external noise. There are advantages.

(Effects) As described above, the rotating magnetic head device according to the present invention includes a magnetic head provided on a rotating drum rotated by a driving means, and a rotary device attached to the rotating drum that transmits signals with a non-rotating part. A rotating magnetic head device that electrically connects one core of a transformer by soldering a pin or the like, the rotating magnetic head device having an opening through which a soldering iron can be inserted from the outside into the inside of the rotating magnetic head device. By inserting a soldering iron into the drum, the magnetic head and the rotary transformer can be soldered from the outside of the rotating magnetic head device inside the drum. It is possible to provide a rotating magnetic head device that can reliably transmit signals, which are weak currents flowing between the two, without attenuation, and improve reliability, and is less susceptible to external noise. Furthermore, by inserting a soldering iron through the opening, soldering work can be performed extremely easily and reliably, and work efficiency and reliability can be greatly improved with a simple configuration.

[Brief explanation of drawings]

Figure 1 is a sectional view of a conventional rotating magnetic head device.
FIG. 2 is a sectional view of the main parts of a rotating magnetic head device according to an embodiment of the present invention, and FIG. 3 is a partially cutaway front view of the rotating magnetic head device according to an embodiment of the present invention. . 10... Rotating drum, 11... Magnetic head, 1
2... Connection pin, 13... Rotary transformer,
13a... Rotor side core.

Claims (1)

[Claims for Utility Model Registration] A magnetic head provided on a rotating drum rotated by a driving means and one core of a rotary transformer attached to the rotating drum that transmits signals with a non-rotating part are connected by a pin or the like. A rotating magnetic head device that is electrically connected by soldering includes an opening through which a soldering iron can be inserted from the outside of the rotating magnetic head device into the inside of the rotating magnetic head device, and the soldering iron is inserted through the opening. A rotating magnetic head device characterized in that the magnetic head and the rotary transformer can be connected by soldering inside the drum from outside the rotating magnetic head device.