JPH0348847Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a communication bus that connects a DC electronic device, such as an electron microscope, and its DC power source.

[Technical background of the invention and its problems] A conventional communication busbar is constructed as shown in FIGS. 2A to 2C. FIG. 2A shows the overall outline of the cylinder 1. In this figure, the cylinder 1 has a power source and a
Tapered portions 2 to be inserted into the main body of the device are provided, and electrode portions 3 shown in FIGS. 2B and 2C are provided at the tips of each tapered portion 2, respectively. The electrode section has a cylindrical insulating tube 4 and a plurality of ring-shaped electrode plates 5 embedded in the surface thereof and distributed in the axial direction. In addition,
In this figure, 6 indicates a lead wire that connects each conductor in the cylinder 1 and the corresponding electrode plate.

The illustration shows a case where there are three electrode plates 5, but for example, if the electronic device is an electron microscope, a large number of electrode plates such as 13 are required, and in the conventional connecting busbar described above, the electrode portion 3 is very large. It is long and inconvenient to attach, detach, and otherwise handle.

This invention was made based on the above circumstances,
The purpose of the present invention is to obtain a communication bus bar that can shorten the length of an electrode part even when a power source or a device main body requires a large number of electrodes.

[Summary of the invention] The communication busbar of the invention has a cylindrical body, tapered portions at both ends thereof, and cylindrical electrode portions provided at the tips of each tapered portion. The tube is a stepped tube in which a plurality of sections with different diameters are arranged in descending order of diameter from the tip thereof, and a plurality of electrode plates are attached to the sections with different diameters at equal intervals in the circumferential direction. do.

[Embodiment of the invention] FIG. 1A is a longitudinal sectional view of an embodiment of the invention, FIG. 1B is a cross-sectional view thereof, and FIG. 1C is a perspective view of the main parts thereof. In these figures, a positioning key 7 is provided at the tapered end of the cylindrical body 1, and a socket (not shown) is provided with a keyway for receiving the key. In addition, the insulating tube 14 of the electrode section 3 has a small diameter section 14.
a, a medium diameter portion 14b, and a large diameter portion 14c. A disc-shaped electrode plate 15 is attached to the tip of the small diameter part 14a, and the middle diameter part 14b
Four rectangular electrode plates 16 that are equally spaced in the circumferential direction and long in the axial direction are attached to the surface near the tip of the large diameter portion 14c, and similar to the electrode plates described above are attached to the surface near the tip of the large diameter portion 14c. Eight electrode plates 17 are attached. In the embodiment with the above configuration, the electrode part 3
has a total of 13 electrode plates.

In this invention, the electrode plate is placed in the axial direction of the electrode part.
Since the electrode section is divided in the circumferential direction, even if the electrode section must include a large number of electrode plates, its length will not become too large.

Note that the present invention is not limited to the above embodiments. For example, the number of electrode plates is not limited to the 13 illustrated. Furthermore, the shape of the electrode portion insulating cylinder is not limited to the illustrated three-stage configuration, but can be made into a more multi-stage configuration depending on the number of electrodes.

[Effect of the invention] As is clear from the above, the connection bus of the invention has a large number of electrode plates,
The axial length of the electrode portion will not be excessive, and there will be no inconvenience in attachment/detachment or other handling.

[Brief explanation of the drawing]

Figure 1A is a longitudinal cross-sectional view of an embodiment of the present invention, Figure 1B is a cross-sectional view thereof, Figure 1C is a perspective view of the main parts thereof, and Figure 2A is an outline of a conventional connecting busbar. A side view, FIG. 2B is a longitudinal sectional view of the main part, and FIG. 2C is a perspective view of the main part. 3... Electrode part, 7... Positioning key, 14...
Insulating tube, 15, 16, 17...electrode plate.

Claims (1)

[Scope of utility model registration request] In a device that has a cylindrical body, tapered portions at both ends, and cylindrical electrode portions provided at the tips of each tapered portion, the insulating tube of the electrode portion is arranged in the order of decreasing diameter from the tip. A connecting bus bar, characterized in that it is a stepped tube in which a plurality of different parts are connected, and a plurality of electrode plates are attached to the parts having different diameters at equal intervals in the circumferential direction.