JPS584241Y2 - Dielectric support device for waveguide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a device for supporting a dielectric within a waveguide.

Figures 1a and 1b are cross-sectional views showing an example of a conventionally known device of this type. Figure 1a is a vertical cross-sectional view along the tube axis of the waveguide, and Figure 1 is a cross-sectional view It is a diagram.

□In Figure 1 a and b, 1 is a waveguide, A. Mounting holes B, C, and D are provided at vertically symmetrical positions of the waveguide 1, respectively, and mounting holes A, B, C, and 2 are provided so that the tips protrude into the pipe.
The push pin 3 inserted in D is a plate-shaped dielectric material having a hexagonal shape elongated in the tube axis direction of the waveguide 1, and the dielectric material 3 has two mutually parallel sides 3a and 3b. The push pin 2 is supported by recesses provided at the tips of the push pin 2 protruding from both sides at two locations, and is pressed by a mechanism (not shown) that presses the rear end of the push pin 2 provided at the rear of the push pin 2. By pushing into the waveguide 1, the dielectric 3 is tightened and supported.

However, in such a device, the dielectric 3 is generally made of extremely inflexible material such as glass or ceramic, so it is difficult to tighten the dielectric 3 with the push pins 2 too strongly, or to damage the dielectric 3. If vibration or impact is applied to the dielectric 3 after installation, there is a risk of damage to the dielectric 3, and to prevent this, it is recommended to keep the tightening force low, such as when using the waveguide 1 vertically. There is a drawback that the dielectric 3 may shift or fall off.

If the electromagnetic waves passing through this outside have a large power, the dielectric 3
Another drawback was that as the temperature rose, thermal expansion occurred, leading to damage.

This invention aims to eliminate the above-mentioned drawbacks in conventional support devices.

FIG. 2 is a longitudinal cross-sectional view showing an embodiment of this invention. In the figure, the same reference numerals as in FIGS. 1a and 1b indicate the same parts. This is different from the conventional method in that points on the sides 30 to 3f forming the corners of are supported by push pins 2.

FIG. 3 is an enlarged perspective view of the push pin 2. As shown in FIG. It is formed so that it has the same slope as the slope of each side surface.

In the device configured in this way, there is no risk of the dielectric 3 shifting in the tube axis direction or falling off even if the push pin 2 is not tightened too strongly, and the push pin 2 is not forced against the dielectric 3. The dielectric 3 can be supported without applying any force.

Furthermore, since the push pins 2 do not apply unreasonable force to the dielectric 3, there is extremely little risk of the dielectric being damaged by vibration, impact, or thermal expansion, making it possible to obtain an extremely reliable support device. can.

In the above embodiment, the dielectric body 3 has a hexagonal shape, but the dielectric body may be of any shape as long as both ends are pointed, for example, a parallelogram shape. The support device of this invention can also be applied to

As explained above, according to this invention, it is possible to prevent the dielectric from shifting or falling off, and it is also possible to extremely reduce the risk of damage due to vibrations, shocks, etc.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional support device, FIG. 2 is a sectional view showing an embodiment of this invention, and FIG. 3 is an enlarged perspective view showing a push pin used in the support device of this invention. . In the figure, 1 is a waveguide, 2 is a push pin, 2a is a recess of the push pin 2, 2b is the bottom of the recess 2a, 3 is a dielectric, A, B
, C, and D are mounting holes. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Scope of utility model registration request] (1) A dielectric plate having a shape that has a pointed portion formed by two sides, at least one of which is not parallel to the tube axis, at both ends facing in the tube axis direction of the waveguide when installed in the waveguide. , a mounting hole provided so as to penetrate from the outer surface to the inner surface of the waveguide at a position opposite to two sides forming each of the pointed portions of the dielectric plate, and a pointed portion of the dielectric plate at the tip end thereof; A recess having an inclined bottom that matches the inclination of two sides forming the dielectric plate is inserted into the mounting hole so that the tip protrudes into the waveguide, and the tip of the dielectric plate is inserted into the recess. 1. A dielectric support device for a waveguide, comprising a push pin that fits and supports one point on two sides forming a waveguide. (2) The shape of the dielectric plate is a hexagon with two parallel sides, and with the two parallel sides parallel to the tube axis, press one point on each of the other four sides. A dielectric support device for a waveguide according to claim 1, characterized in that the device is supported by pins.