JPS6236717A - Rotary magnetic head device - Google Patents

Abstract

PURPOSE:To improve the assembling operability of a rotary magnetic head device by attaining the connection between the magnetic head and a rotary transformer with no intervention of a printed board and using both a male contact and a female contact. CONSTITUTION:A rotary magnetic head member 1 is attached to an upper rotary cylinder 2 and a rotor 4 of a rotary transformer is set opposite to a stator 4' and attached to a fixing member 6 via a polymer member 11. The cylinder 2 contains a female contact 3 for connection with the member 1 and the contact 3 is stored in a housing 10 made of a polymer material. An end part 3'' at the other side of a contact part 3' of the contact 3 is connected electrically to a terminal part 1' of the member 1 by soldering 8. While the member 11 set over the rotor 4 contains a male contact 7 connected by soldering 9 at an end with the other end connected electrically to the contact 3 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotating magnetic head device for a magnetic recording/reproducing device such as a video tape recorder, and more specifically to an electrically conductive means between a magnetic head and a rotating transformer. It is related to.

[Background of the invention]

In the conventional device engineering, as described in Japanese Utility Model Application Publication No. 5Q-59427-JJ, a printed circuit board was attached to the surface of the rotary cylinder opposite to the surface provided with the magnetic head, and the printed circuit board was connected from the magnetic head with a conductive wire. However, in the device in question, the conductor from the rotary transformer is also connected to the printed circuit board, so the conductor that transmits the ultra-weak signal from the +11i air head is long (and susceptible to externally induced noise). Due to the large number of solders required, workability is poor. (If the magnetic head wears out, it must be replaced for each rotating cylinder, but
A large number of soldered parts had to be removed due to the cross-section. )
There were other problems.

[Purpose of the invention]

An object of the present invention is to eliminate the drawbacks of the above-mentioned conventional examples and to improve assembly workability.

[Summary of the invention]

The present invention provides a connection between a magnetic head and a rotating transformer.
By using a male contact (plug) and a female contact (connector) without relaying the printed circuit board, the connection length is shortened, making it less susceptible to externally induced noise, and improving assembly workability. It is something. In particular, the elasticity of the polymer member that holds the contacts is skillfully utilized to attach the contacts to the rotating member, eliminating the need for fasteners and adhesives. Furthermore, by using the head mounting base as a stopper, the shape of the insertion hole in the approximately J-shaped portion is simplified and costs are reduced. Further, by using the approximately J-shaped part insertion hole and the head dispersion pedestal position adjustment hole, the number of parts added to the rotating cylinder can be reduced. .

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
2 is a top plan view of the rotary magnetic head device of the present invention, and FIG. 2 is a sectional view of a main part of the top plan view AOB of FIG. 1.

In FIGS. 1 and 2, 2' indicates a fixed cylinder (lower cylinder), 2 indicates a rotating cylinder (upper cylinder) attached to the rotating @5 via a fixed member (disc) 6,
A rotating magnetic head member 1 is attached to the cylinder as shown. 4' is a stator attached to the fixed cylinder 2, and 4 is a rotor of an a-tally transformer which is placed opposite the stator 4 at a temperature of 0.degree. C. and is attached to the fixed member 6 via a polymer member 11. A female contact 5 for connection with the rotating magnetic head member 1 is attached to the rotating cylinder 2, and this female contact is housed in a housing 10 made of a polymeric material. The other end 5' of the contact portion 3' of the female contactor 3 is electrically connected to the terminal portion 1' of the magnetic head member 1 by brazing 8. Furthermore, a male contact 7 is provided on the polymer member 11 located on the upper part of the a-tube 4, one end of which is electrically connected with a brazing 9, and the other end of which is electrically connected to a female contact 5VC. It is being

FIG. 3 is a perspective view of the rotating cylinder 20 components in FIG.
FIG. 4 is a perspective view showing the rotary magnetic head member 1 attached to the rotary cylinder 2. As shown in FIG. 5 and 4, the rotating cylinder 2 has a rotating head mounting screw hole 21 for mounting the rotating magnetic head member 1, and the rotating magnetic head member 1 is fixed to the rotating cylinder 2 with the rotating magnetic head mounting screw 24. has been done. Further, the rotary cylinder 2 is provided with rotary magnetic head adjustment holes 22 and 25 to adjust the position of the rotary magnetic head member 1. The rotating magnetic head member 1 has two adjustment holes 22 and 23, which can be classified into a coarse adjustment hole 23 and a fine adjustment hole 22. The precision adjustment hole 22 requires adjustment using a rotating cylinder device as shown in FIG.

FIG. 5 is a plan view showing the female contact 3 inserted into the housing 10 made of a polymeric material, and FIG. 6 is a side view of FIG. 5. FIG. 7 is a plan view in which FIG. 5 is attached to FIG. 4, and FIG. 8 is a side sectional view of FIG. 7. Fifth
8, the housing 10 is provided with a protrusion 2.degree. having a 1-shaped cross section, and this J-shaped protrusion 20 is inserted into the rough adjustment hole 25VC of the rotary cylinder 2 shown in FIG.

This single-shaped convex part has spring properties, and a part of the convex part 20α is
When it is inserted all the way to the bottom of the head core mounting base 12, which is one part of the rotating magnetic head member, the J-shaped convex part widens.
By abutting against the bottom surface of the head core mounting pedestal 12, the mounting 10 is configured to prevent it from easily coming off from the rotating cylinder 2. Further, a female contact 3 is attached to the housing 10, and a brazed portion 5' is attached so as to match the printed circuit board 13 of the rotating hunting head member 1. The printed circuit board 13 is attached to the rotating magnetic head member 1 and is used to transmit signals from the head core.

〔Effect of the invention〕

According to the present invention, it is possible to improve externally induced noise by 6 dB to 105 dB, reducing interference in strong electric field areas near busy medium wave broadcasting transmitting stations. As a result, assembly workability is improved and a highly reliable rotary magnetic head device can be provided.

In particular, this shape eliminates the need for additional holes for the rotating cylinder by using the holes for position adjustment of the rotating magnetic head. In addition, since the rotating 8-air head is attached to the flat surface of the rotating cylinder and is fixed to the herad core mounting bracket of this rotating magnetic head, it can be fixed with high precision. In addition, since the hole near the rotating magnetic head is used, the precision between the printed circuit board of the rotating 8-air head and the brazed part of the female contact is very easy to achieve, and it can be easily connected to the rotating cylinder by simply inserting it. Can be installed.

[Brief explanation of drawings]

FIG. 1 is a top plan view of a rotating magnetic head device showing an embodiment of the present invention, FIG. 2 is an AOBIfr side view of FIG. 1, and FIG.
4 is a perspective view of the rotary cylinder 2, FIG. 4 is a perspective view of the rotary hunting head member attached to FIG. 3, FIG. 5 is a plan view of the housing when the male contact is inserted, and FIG. 7 is a plan view combining FIG. 4 and FIG. 5, and FIG. 8 is a sectional side view of the main part of FIG. 7. 1... Rotating magnetic head member 5... Rotating shaft 1'... Terminal portion 2 of 1...
-Rotating cylinder 6...Contact part of fixed member 5'...3 3...Female contact 7...Male contact 3'...Other end 4 of contact part of 3...・Rotor 1J
-) I-lance a-tar 9...brazing 10
...Housing 11...Polymer member 12...Head core mounting pedestal (10 parts) 20...
Approximately one 10-shaped convex part

Claims (1)

[Claims] 1. A rotary cylinder equipped with a magnetic head and a rotary transformer equipped with a winding for signal transmission, and one of the male contact and the female contact is connected to the rotary cylinder or the rotary transformer. In a rotating magnetic head device, the contactor is attached to a transformer, and the other is attached to the rotary transformer or the rotary cylinder, and the two types of contacts provide electrical continuity between the magnetic head and the rotary transformer. A rotating magnetic head device characterized in that it is held by a polymer member. 2. The rotation according to claim 1, characterized in that a convex portion having spring properties is provided on a part of the polymer member, and the convex portion is inserted and fixed into a hole provided in a rotary cylinder. magnetic head device. 3. The rotary magnetic head device according to claim 1 or 2, wherein the convex portion of the polymer member is J-shaped to provide springiness. 4. A hole in the rotating cylinder into which the convex part of the polymer member is inserted is provided near the head core mounting base, and a part of the J-shaped convex part is abutted against a part of the head core mounting base. 4. The rotary magnetic head device according to claim 3, wherein the polymer member does not easily come off from the rotary cylinder. 5. A hole in the rotating cylinder into which the polymeric convex portion is inserted;
5. The rotary magnetic head device according to claim 4, wherein the hole for moving the head mounting base also serves as a hole for adjusting the position and angle of the head mounting base.