JPH03230311A - Rotary head drum device - Google Patents

Abstract

PURPOSE:To reduce the production cost of the rotary head drum device by constituting the device so that the number of soldering positions and the number of parts can be reduced. CONSTITUTION:When a rotary drum 11 is rotated, a signal to be recorded is transmitted to a magnetic head 13 through a rotary transformer 18, a transformer repeating terminal 19, a head terminal 16, and a printing board 14 and a signal to be reproduced is reversely transmitted. A spring contact of the other side of the head terminal 16 is allowed to come into contact with the terminal 19 only by engaging and screwing a rotary drum unit formed by the drum 11, a head base 12, the head 13, the printing board 14, a head terminal connector 15 and the head terminal 16 with a rotor unit formed by a sleave 17, a transformer 18, the terminal 19, and a resin member 20. Since the number of soldering positions can be reduced and connection between the head 13 and the transformer 18 can be obtained, the number of parts can also be reduced and the production cost can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rotary head drum device that can be used in video tape recorders and the like.

2. Description of the Related Art An example of a conventional rotary head drum device is shown in FIG. 2, and will be explained based on one drawing. Reference numeral 1 denotes a rotary drum, and a head base 2 is fixed to the rotary drum 1 with screws. 3 is a magnetic head fixed to the head base 2; 4 is a print board for the head also fixed to the head base 2; the ends of the windings of the magnetic head 3 are soldered. 5 is a head relay terminal inserted into the through hole of the rotating drum 1;
Relay terminal 5 held by this head relay terminal 5
One end of a is soldered to a head printed board 4, and the other end is soldered to a rotating drum printed board 6 attached to the upper surface of the rotating drum 1. 7 is a sleeve coaxially fitted to the rotating drum 1; 8 is a rotary transformer on the rotating side coaxially fixed to the sleeve 7; 9 is a printed board for the rotary transformer fixed to the rotary transformer 8 on the rotating side; The winding ends of the side rotary transformer 8 are soldered. 10 is a rotary transformer relay terminal coaxially fixed to the sleeve 7;

Relay terminal 10a held by this relay terminal 10
One end is soldered to a printed board 9 for a rotary transformer, and the other end is soldered to a printed board 6 for a rotating drum.

The operation of the conventional rotary head drum device configured as described above will be explained.

When the rotating drum 1 rotates, during recording, signals are sent to the rotating side rotary transformer 8, the printed board 9 for the rotary transformer, the relay terminal 10a of the relay terminal 10 for the rotary transformer, the printed board 6 for the rotating drum, and the head relay terminal 5. Relay terminal 5a, head printed board 4,
The information is transmitted in the order of the magnetic head 3, and during reproduction, the order is reversed.

Problems to be Solved by the Invention However, in the above configuration, there are many soldering points to connect the rotating side rotary transformer 8 and the magnetic head 3, and the number of parts is also large, which increases the cost. had.

The present invention solves these problems, and aims to provide an inexpensive rotary head drum device that reduces the number of soldering points and the number of parts.

Means for Solving the Problems In order to solve the problems, the present invention provides a magnetic head for recording and reproducing, a printed board for the head in which a metal coating is formed on contact portions for rust prevention, and a magnetic head for the magnetic head. and a head base to which the printed board for the head is fixed, and a head having a metal coating formed on the surface for rust prevention, one end of which is in contact with the printed board for the head, and the other end of which is a leaf spring and the other end is a connector. A terminal, a head terminal connector holding the head terminal, a rotating drum to which the head base is screwed and into which the head terminal connector is lightly press-fitted, and a metal coating is formed on the surface for rust prevention. The magnetic head, the printed board for the head, and the head base consist of a rotary transformer relay terminal, a rotary transformer on the rotary side to which the rotary transformer relay terminal is fixed, and a sleeve to which the rotary transformer on the rotary side is coaxially fixed.

A rotating drum unit composed of a head terminal connector and a rotating drum is connected to the rotary transformer relay terminal 2.
The rotary transformer is fitted into a rotating body unit constituted by a rotating rotary transformer and a sleeve, so that the connector portion of the head terminal and the rotary transformer relay terminal are in contact with each other.

Effect of the Invention With the above-described configuration, the present invention can reduce the number of soldering points and the number of parts.

EXAMPLE Hereinafter, an example of the present invention will be described based on one drawing.

In FIG. 1, 11 is a rotating drum, and a head base 12 is fixed to this rotating drum 11 with screws. 13
14 is a magnetic head for recording and reproducing that is fixed to the head base 12, and 14 is a printed board for the head that is also fixed to the head base 12 and has a metal coating for rust prevention on the contacts. The wire ends are soldered. 15 is a head terminal connector that is lightly press-fitted and held in the through hole 11a of the rotating drum 11; 16 is a head terminal connector 1 having a metal coating formed on its surface for rust prevention;
5 is a head terminal held, 17 is a rotating drum 11
A sleeve 18 is coaxially fitted to the sleeve 17.
A rotating side rotary transformer 19 is fixed coaxially to the rotating side rotary transformer 18, and is held by a resin member 20 fixed to the rotating side rotary transformer 18 coaxially and with the phase determined in the circumferential direction. This is a rotary transformer relay terminal on which a film is formed, and the winding end of the rotating side rotary transformer 18 is soldered to one end.

The operation of the rotary head drum device configured as above will be explained.

When the rotating drum 11 rotates, in the case of recording, a signal is transmitted to the rotating side rotary transformer 18. Rotary transformer relay terminal 19, head terminal 16, head printed board 14.
The information is transmitted in the order of the magnetic head 13, and this is reversed during reproduction.

Here, a rotating drum unit constituted by a rotating drum 11, a head base 12, a magnetic head 13, a head printed board 14, a head terminal connector 15, and a head terminal 16 whose one end is a leaf spring and is in contact with the head printed board 14. , sleeve 171 rotating side rotary transformer 1
8. By simply fitting the rotary transformer relay terminal 19 and the rotary unit consisting of the resin member 20 and fixing them with screws, the spring contact at the other end of the head terminal 16 and the rotary transformer relay terminal 19 will come into contact and solder. The magnetic head 13 and the rotating side rotary transformer 1 are removed by reducing the number of parts.
8, and the number of parts required for this purpose is also reduced.

Effects of the Invention As described above, according to the present invention, it is possible to reduce the number of soldering points and the number of parts in the rotary head drum device, and thereby reduce costs.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a rotary head drum device showing an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional rotary head drum device. 11...Rotating drum, lla...Through hole, 12...
・Head base, 13...Magnetic head, 14...Printed board for head, 15...Head terminal connector, 16
... Head terminal, 17. Sleeve, 18.. Rotating side rotary transformer, 19.. Rotary transformer relay terminal, 20.. Resin member.

Claims (1)

[Claims] 1. A magnetic head for recording and reproducing, a head printed board with a metal coating formed on the contact points for rust prevention, a head base to which the magnetic head and the head printed board are fixed, and a head base with an anti-rust coating on the surface. A metal coating for rust is formed,
A head terminal whose one end is a leaf spring in contact with the head printed board and whose other end is a connector, a head terminal connector holding the head terminal, and a head base that is screwed to the head A rotating drum into which a terminal connector is lightly press-fitted, a rotary transformer relay terminal whose surface is coated with a metal coating for rust prevention, a rotary transformer on the rotating side to which this rotary transformer relay terminal is fixed, and a rotary transformer on the rotating side to which the rotary transformer relay terminal is fixed. A rotating drum unit consisting of a coaxially fixed sleeve, the magnetic head, a print board for the head, a head base, a head terminal connector, and a rotating drum is connected to the rotary transformer relay terminal, the rotary transformer on the rotary side,
A rotary head drum device configured to fit into a rotary body unit constituted by a sleeve so that a connector portion of the head terminal and the rotary transformer relay terminal are in contact with each other.