JPS6183243U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the main parts of a rotating anode type X-ray tube according to an embodiment of this invention, FIGS. 2 to 4 are sectional views showing modified examples of this invention, and FIGS.
The figure is an explanatory diagram showing the mechanical model of this invention and the conventional one. Figure 7 is a sectional view showing a conventional rotating anode type X-ray tube. Figure 8 is a rotation mechanism in a conventional rotating anode type X-ray tube with a preload structure. Sectional view showing the vicinity, No. 9
The figure is a sectional view showing an enlarged main part of FIG. 8. 8...Rotating shaft, 9...Anode fixed base, 9a...Inner cylindrical part, 9b...Outer bottomed cylindrical part, 9c...Tapered inner circumferential wall surface, 14 ...Bearing, 15...Ball, 16
...Inner ring race, 17...Outer ring race, 17a...Tapered outer peripheral surface, 18...Spring, 19...Lubricating film, 20
...Intermediate material.

Claims (1)

[Scope of claims for utility model registration] (1) A rotating cylinder to which an anode target is fixed,
A rotating shaft coaxially fixed to the inside of the rotating cylinder, a bottomed cylindrical anode fixing base disposed between the rotating shaft and the rotating cylinder, and a bottomed cylindrical anode fixing base between the anode fixing base and the rotating shaft. A rotating device comprising: a pair of bearings interposed therebetween; and a coil spring disposed between the outer ring race of the bearing farthest from the anode target of the pair of bearings and the stepped portion of the anode fixing base. In the anode type X-ray tube, the outer circumferential surface of the outer race of the bearing located far from the anode target and the inner circumferential wall surface of the anode fixing base that contacts this outer circumferential surface are each tapered to become wider toward the farther side in terms of thermal path. Rotating anode type
wire tube. (2) The taper angle of the tapered sliding surface is 2°~
A rotating anode type X-ray tube according to claim 1, which is set within a range of 10 degrees. (3) A thin plate-like intermediate material made of a solid lubricant is interposed between the tapered outer circumferential surface of the outer race and the tapered inner circumferential wall surface of the anode fixing base. The rotating anode type X-ray tube described. (4) Utility model registration claim 1, wherein an intermediate layer made of a self-lubricating material is interposed between the tapered outer circumferential surface of the outer race and the tapered inner circumferential wall surface of the anode fixing base. Rotating anode type X-ray tube as described in . (5) The rotating anode X-ray tube according to claim 1, wherein a lubricating film made of a self-lubricating material is adhered to the tapered sliding surface. (6) The tapered inner circumferential wall surface of the anode fixing base has a double structure and consists of an inner cylindrical part and an outer bottomed cylindrical part, and the outer ring race of the bearing is in contact with the inner cylindrical part.Request for Utility Model Registration The rotating anode X-ray tube according to item 1. (7) The rotating anode X-ray tube according to claim 6, wherein a lubricating film made of a self-lubricating material is adhered to the tapered outer peripheral surface of the outer race. (8) The rotating anode type X-ray tube according to claim 1, wherein the outer race is made of a self-lubricating material.