JPS62190314U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a plan view showing opposing surfaces of the rotary transformer core in a rotary head assembly as an embodiment of the present invention, and Fig. 2 is a cross section showing the structure of the rotary head assembly as an embodiment of the present invention. 3 is a sectional view of the core of the rotary transformer shown in FIG. 1, and FIG. 4 is a sectional view showing the structure of a rotary head assembly as another embodiment of the present invention.
Fig. 5 is a plan view showing opposing surfaces of the core of the rotary transformer shown in Fig. 4, Fig. 6 is a sectional view of the core of the rotary transformer shown in Fig. 5, and Figs. 7 and 8 are the core of the rotary transformer. FIG. 9 is a diagram showing an example of a conventional rotary head cylinder, and FIG. 10 is a diagram showing another conventional example of a rotary head cylinder. 1 is a fixed cylinder as a fixed member, 2 is a rotating shaft member, 3 is a supporting member, 4 is a rotating upper cylinder, 9
10 is the rotating core of the rotary transformer, 10 is the fixed core of the rotary transformer, 39 is the photosensitive material, 4
0a is a groove.

Claims (1)

[Scope of utility model registration request] A rotating device comprising a fixed member, a rotating member, and a rotary transformer for transmitting signals between the rotating member and the fixed member, the rotary transformer having a photosensitive material layer on at least one of opposing surfaces thereof. . A rotating device, wherein the photosensitive material layer is formed with a groove whose size changes from the rotation center side of the rotating member toward the outside by exposure.