JPS58197807A - Rotary transformer - Google Patents

Abstract

PURPOSE:To thin and miniaturize the titled transformer without lowering characteristics by interposing a high-permeability alloy layer or a high-permeability ferrite layer between a coil and a rigid base body. CONSTITUTION:The high-permeability thin layer 2 of the paste of Ni-Mn-Zn group ferrite powder or permalloy powder is formed onto the base body 1 in which the paste of magnetic ferrite powder capable of displaying mechanical characteristics is printed orbicularly to a proper substrate. The powdered paste of glass, alumina or titania or the like and two spiral conductors 3, 4 are further formed to the surface for insulation. A wholly small-sized or thin rotor or stator can be constituted because there is the high-permeability layer of permalloy, etc. just at the back of the coil conductors and interaction (the cross-linkage of magnetic flux) between the coils is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tattoo lance. A tally transformer is used as a means to transmit electrical signals from a rotating head in a video recorder, a sensor for a rotating body, etc. to a path in a stationary part.
Between these concepts, Figure 1 and Figure 2 show a rotary transformer that transmits signals from the head of a two-head video recorder, with Figure 1 being a disk type and Figure 2 being a coaxial type. The coil 51 connected to the magnetic head H1%H1 acts magnetically with the coil 4' of the stator 21 through the surface of the rotor 11 rotated by the shaft 5'.
, 4", the larger the interaction, the better, so
The coils 5' and 4' are magnetically exposed on the opposing surface of the stator 21, and the opposite surface of the coil is supported by a highly rigid magnetic material such as ferrite. However, the fill s1.41 l
In order to increase the number of linkages of the magnetic flux of the 7-elite, it is necessary to make the thickness of the 7-elite sufficiently large. J! Specifically, between the coil and the rigid body, a highly permeable high-crystalline magnetic alloy layer with extremely high magnetic permeability or a high magnetic permeability ferrite layer such as Ni-Zn ferrite with extremely high magnetic permeability is used. By interposing sintered 7-elite with good mechanical properties or in some cases mu-1,0. %Tie
To provide a thinner or smaller scale transformer using a non-magnetic material such as , etc. without deteriorating the characteristics.

The present invention will be described in detail below with reference to the m-plane.◇The transformer of the present invention can be roughly divided into two methods for manufacturing.
One is the printing method and the other is the thin film method.

In the printing method, the part that is to become a rigid substrate is a paste such as ferrite powder, alumina powder, or titania powder that exhibits good mechanical properties after sintering, and the part that is to become a high magnetic permeability thin film is a permalloy surface* or Ni-M*-. Z m 7 E-fit powder paste, coil conductor is metal powder paste F, and the part that should become the insulating layer is glass or N1-Mu-Z+a
The insulator is made by vapor deposition of titania, glass, or alumina, and the conductor is also made by vapor deposition without firing. In the case of the thin screen method, the coil conductor may be coated with polyurethane or the like, and in this case, the coil conductor can be bonded to the permalloy surface with an adhesive.

In the following, an example of a printing method will be described as shown in Section HH, where a disk-shaped paste of magnetic 7) powder that exhibits mechanical properties is printed on a suitable substrate (not shown) to form the substrate 1. The thickness is determined so as to provide sufficient rigidity; therefore, printing of this part may be repeated several times. On top of this, a paste of Nl-Mu-Lm 7-elite powder or permalloy powder is printed as shown in 11M4- to form a high magnetic permeability thin layer 2. Further, a thin powder paste of glass, alumina or titania is printed on this for insulation, and on top of that, two spiral conductors 13 and 14T are printed as shown in No. 5 wJ (must be a 2-head method). (if one conductor is enough). Furthermore, 84 g of glass, alumina, or titania paste is thinly printed on top of the insulating layer 5 to protect the conductor 3.4. At this time, conductor i, 417) terminal 'l s Sl ,' m s s.

is exposed by the large 4. As shown in Figure t1My, conductor terminals s1, r, ss, sFl are drawn out to the outer periphery of the disk by forming a drawer@7 with conductor paste, and a connecting terminal portion is formed on the surface of the old board scrap. Finally, as shown in FIG. 8, through holes 8 are punched to form a laminated structure as shown in FIG. 9.

The above-mentioned laminate can be used as a finished product by firing at a high temperature in a firing furnace (in the case of lamination by printing method) or as it is (in the case of vapor deposition by plasma method, sputtering method, etc.). 2 laminates configured as follows.
Prepare two parts (but make necessary changes) and configure one as a data center and the other as a stator. The first
Let's use a rotary i-lance as shown in the figure.

Because of the above structure, a high magnetic permeability layer such as permalloy is located directly behind the coil conductor and enhances the interaction (magnetic flux linkage) between the coils, so the overall shape is small or thin. The advantage is that the rotor and stator can be configured as follows.

It will be apparent to those skilled in the art that many variations are possible within the scope of the invention.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional disc type rotary transformer, N
Figure 12 is a sectional view of a conventional coaxial rotary transformer, and Figures 3 to 8v! A is a plan view of each sequential process showing the manufacture of a rotor or stator according to an embodiment of the present invention, and FIG.
The figure is a cross-sectional view of a completed laminated rotor or stator. The main parts in the diagram are as follows. 1: Rigid substrate 2: High permeability magnetic film 5.4: Conductor 5: Insulating layer Akira Kurahashi ()・Procedure supplement 11:
, July 1! 1, 1982 Kazuo Wakasugi, Commissioner of the Patent Office Displaying one item 1982 - No. 80282 Title of invention Relationship to the case of a person who performs a supplementary IF of a Tally transformer Patent application Person Name (SO6) Tokyo Denki Kagaku Kogyo Hata Co., Ltd. Kanesha Agent Amendment Subject Supplement 11: Contents As shown in the attached document, Figure 1 has been corrected by Haruka in the attached document. Figure 1

Claims (1)

[Claims] (1) A laminate consisting of a WA substrate, a high permeability magnetic layer provided on the surface thereof, at least one coil-shaped conductor provided on the surface, and an insulator for the above-mentioned coil-shaped conductor. A pair of Tally transformers are prepared, and the thresholds on the conductor side are arranged in pairs to allow relative rotation. (2) The rigid base is selected from non-magnetic materials such as alumina and titania, or magnetic materials such as ferrite, and Permeability magnetic layer is par! Alloys of Tai et al.
Or Nl-Mu-Z*7 with higher magnetic permeability than the magnetic material
The Noritsu tally transformer according to the above item 1, which is selected from the 7 types of Elaishi.