JPH0350605Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The invention is used in the field of X-ray tubes.

TECHNICAL FIELD The present invention relates to an X-ray tube enclosure, and more particularly to connection with a high voltage cable.

(b) Conventional technology As shown in Figure 3, the appearance of the X-ray tube container itself remains unchanged. 1 is an X-ray tube container, 2 is a high voltage cable, 19 is a cable portion thereof, and 20 is an X-ray emission port. 3 and 4 are connection parts according to the present invention.

Further, in FIG. 1, the parts other than the pressure band 18 are also the same as in the conventional example. The X-ray tube container 1 encloses an X-ray tube (not shown) and has a socket 6 in an outer cylinder 5 for supplying high voltage to the X-ray tube. The high voltage is sent via a high voltage cable 2. First, the head 10 installed at the end of the cable.
When inserted into the socket 6 and screwed together the tightening ring 15 and the threaded part 16 of the outer cylinder 5, the collar part 17
is also pressed down, and the head 10 is fixed within the socket 6. In the conventional example, high voltage cables are connected or fixed as outlined above.

(c) Problems to be solved by the invention However, in X-ray machines for medical rounds and tube containers suspended from the ceiling for general radiography, the direction of radiography varies. Therefore, since the tube container is rotated and moved every time a photograph is taken, the high voltage cable is pulled or pulled at the same time, and the tightening ring for holding and fixing it loosens.

When the tightening ring loosens, the filling material (silicone grease) in the connection flows out, creating a void. If such a gap occurs, electrical discharge may occur and the high-voltage cable may be pulled out.

Therefore, an object of the present invention is to provide an X-ray tube container that prevents the cable from coming out from the connection part with the high voltage cable.

(d) Means for solving the problem The above-mentioned object is such that the end head of the high voltage cable has a collar, and this head passes through the inner hole of the tightening ring and is attached to the inner circumferential surface of the upper opening. An X-ray tube container that is housed in a socket of an outer cylinder with a threaded part, and the flange of the head is also held down by the tightening ring and the threaded part of the outer cylinder, and a high voltage cable is connected and fixedly held. This is achieved by attaching an elastic pressure band across the tightening ring and part of the outer surface of the upper part of the outer cylinder.

(E) Effect According to the present invention, the pressure band to prevent loosening is engaged with the tightening ring to prevent loosening even due to vibrations caused by the movement of the X-ray tube container. .

(F) Embodiment A preferred embodiment of the present invention will be explained based on FIGS. 1 and 2.

FIG. 1 is a longitudinal cross-sectional view of a high voltage cable connecting portion connected to an outer tube 5 of an X-ray tube container 1, showing the first embodiment.

A socket 6 is airtightly fixed to the outer cylinder 5 of the tube container 1 via an O-ring 7 with a ring screw 8. In addition, there is an X (not shown) in the tube container 1 along with insulating oil 9.
A wire tube is enclosed.

The terminal head 10 of the high voltage cable 2 is inserted into the socket 6, the connecting pin 11 and the connecting socket 12 come into contact with the head 10, and high voltage power is supplied. A gap 13 between the head 10 and the socket 6 is filled with silicone grease 14 to prevent the generation of corona. The head 10 is held by a tightening ring 15 that engages with a threaded portion 16 provided on the inner peripheral surface of the opening of the outer cylinder 5, and by a collar portion 17 that is pressed thereby.

After the head 10 of the high voltage cable 2 is held and fixed to the tube container 1 in this manner, the locking press band 18 is placed over the tightening ring 15 and the upper outer surface of the outer tube 5. In this case, pressure band 1
Similarly to the tightening ring 15, the ring 8 also has an inner hole through which the cable 19 is inserted.

As shown in FIG. 2, a molded press band 18 is used, but since the X-ray tube container is heated to a maximum of about 80 degrees, an elastic material that does not undergo plastic deformation is selected. In use, before inserting the head 10 of the cable section 19 into the socket 6,
First press ring 18, then tighten ring 15
are inserted into their respective inner holes, and then
The tightening ring 15 is sequentially screwed on, and the pressing band 18 is
All you have to do is press it.

(g) Effects of the invention According to the invention, even if the X-ray tube container moves in multiple directions, it can withstand the tension of the cable due to its vibration and directional rotation, and there is no leakage of the filler material (silicon grease). Corona discharge does not occur, and since the high voltage cable does not come off due to the discharge, there is no risk of electric shock, and there is no damage to the holding and fixing screws.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a main part showing one embodiment of the present invention, FIG. 2 is a cross-sectional view of an example of molding of a press band according to the present invention, and FIG. 3 is a schematic external view of an X-ray tube container. 1 is a tube container, 2 is a high voltage cable, 3 and 4 are connection parts, 5 is an outer cylinder, 6 is a socket, 9 is an insulating oil, 1
0 is a head, 15 is a tightening ring, 18 is a pressing band, and 21 is a high voltage lead wire.

Claims (1)

[Scope of utility model registration request] The distal end head of the high voltage cable has a collar, the head passes through the inner bore of the clamping ring and is received in a socket of an outer cylinder with a threaded part on the inner circumference of the upper opening, and the clamping ring The collar of the head is also held down by the threaded part of the outer cylinder, and in the X-ray tube container where the high voltage cable is connected and fixed, it straddles the tightening ring and part of the outer surface of the upper part of the outer cylinder. An X-ray tube container characterized by having an elastic pressure band attached thereto.