JPS606562B2 - Structure of waveguide penetration part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for mounting a waveguide that passes through a wall surface, etc., and more specifically to a structure in which the mounting position can be finely adjusted.

Microphones between buildings and outdoor equipment, between outdoor equipment and equipment, or between antennas, etc. for electronic communication equipment or other equipment that uses ultra-high frequencies, such as microwave bands.

Waveguides with three-dimensional circuits having rectangular, circular, elliptical, coaxial, etc. cross sections are used to transmit wave signals. These waveguides are expanded by connecting the waveguides with flanges at their ends.
The waveguide is supported in the portion where the waveguide passes through the wall surface of the building, equipment, etc., and furthermore, waterproofness and airtightness are imparted to the waveguide. Conventionally, the structure of such a penetrating portion was as shown in FIG. That is, the flange 6 of the waveguide 5 is attached to the surface of the flange 3 of the cylinder 2 attached to the outside of the wall surface 1 via the packing 4 with screws 7. In this case, the other waveguide 8 extending to the outside of the waveguide 5 has a relatively long distance and can be connected to the waveguide 5 while matching the positional relationship.

However, connecting to the internal waveguide 9 requires a combination of many waveguides (not shown) as circuit components, and when these are arranged and connected in high density, errors in individual shapes and dimensions may occur. will be accumulated, so that the final connection end of the waveguide 9 will very rarely coincide with the desired position, i.e. the connection point of the waveguide 5, and there will usually be a considerable distance discrepancy. Even if there is a slight difference, if the connection is forced, there will be no elasticity and the waveguide will be deformed, causing problems in signal transmission. Therefore, in order to compensate for such errors at the ends of the waveguides and match them, the thickness of the packing 4 may be changed, or space waveguides 10 with different thicknesses may be prepared in advance and inserted between the waveguides 5 and 9. Although the difference in direction could be corrected, it was extremely difficult to correct the error in the direction perpendicular to the axis.

Another method is to make the space waveguide portion long enough to insert and mount a flexible waveguide, but this method requires space and the flexible waveguide is expensive. In view of the above-mentioned points, the present invention aims to provide a structure of a penetration part that allows the connection end of a waveguide of the penetration part to be arbitrarily matched with the connection end position of a waveguide arranged in a device without any difficulty. For this purpose, the configuration of the present invention includes a cylindrical body that is attached to a place where the waveguide is to be penetrated with the waveguide inside, and a cylindrical body that is screwed together with the cylindrical body to adjust the axial position of the cylindrical body. and a mounting member having an end portion with a mounting surface of the waveguide perpendicular to the axis, and a pressing member that presses and clamps a flange surface provided on the waveguide to the mounting surface of the mounting member. It is a feature.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a side cross-sectional view of one embodiment of the present invention, in which means (not shown) such as welding, screwing, or rivets are attached to the outside of the wall surface 11 such as the ceiling or side surface of the device, and if necessary, waterproofing or airtightness is provided. A cylindrical body 12 is attached to the cylindrical body 12, and a male thread is formed on the outer surface of the cylindrical body 12.

On the outside of the cylindrical body 12, a cylindrical part having a female thread that fits and screws together with the male thread of the cylindrical body 12 on the inside, and a mounting part village 13 having a mounting surface formed of a flange on the end surface are mated.
The waveguide 14, which passes through a hole in the wall surface 11 and is inserted into the cylindrical body 12, has a connecting flange at both ends and a connecting flange at the middle part, which is sufficiently larger than the inner hole of the mounting surface of the mounting section 13 and the spacing between the mounting screws described later. A flange 5 having a small diameter is also integrated by brazing or the like. An annular pressing member 16 is applied from the outside of the flange 5, and is tightened to the mounting surface of the mounting member 13 with mounting screws 17 arranged in an appropriate number of circles to sandwich the flange 5. 18 is a set screw that penetrates and is screwed into the cylindrical portion of the mounting member, and 19 and 20 are a waveguide extending outside the device and a waveguide disposed inside the device, respectively.
It is connected to both ends of 4 with screws.

To assemble the waveguide penetration part having the above-mentioned structure, the mounting member 13 is screwed into the cylinder body 12 as shown in the figure, but at this time, it must be screwed in to a sufficient depth. The waveguide 14 in the penetration part is connected. In this state, the mounting member 13 is screwed back so that its mounting surface is in contact with the flange 5, and the set screw 18 is tightened to fix the positional relationship between the cylinder body 12 and the mounting member 13. Then press member 1
6 is attached to the attachment surface of the attachment member via a flange on the outside thereof, and screws 17 are screwed in to secure the attachment member by tightening and clamping. In this way, the waveguide 14 can be fixed at any position in the axial direction and the direction perpendicular to the axis with respect to the penetration part, at a position determined depending on the position of the internal waveguide 20. The above provides a length margin that allows the threaded portion of the cylinder 12 and the mounting member 13 to follow the error or difference in the position of the internal waveguide 20, and the mounting surface relative to the outer diameter of the flange 15. This is achieved by keeping a similar gap between the opposing screws 13.

After that, the external waveguide 19 is connected. In addition, if it is necessary to keep the inside of the device waterproof or airtight from the outside, an appropriate sheet-like packing or a slimy sealant is inserted into the contact surface between the mounting surface and the flange 15, and the cylindrical body 12 This can be easily achieved by applying a sticky sealant to the threaded portion of the mounting member 13 and threading the mounting member 13 together. As described above, the present invention provides a cylindrical body in the waveguide substantially penetrating portion of a device, etc., and an axially adjustable mounting portion that is screwed onto the cylindrical body, and further includes a penetrating guide on the mounting surface of the mounting material. By arranging a pressing part that can move the flange of the waveguide in a plane perpendicular to the axis and presses the flange against the mounting surface and fixes the flange by crocheting, it has been possible to adjust various members according to the difference in the position of the internal waveguide. Since adjustments that have been made by adding or subtracting can be made according to the assembly work for fixing without requiring any such members, the efficiency of the assembly work is extremely high, and there is no need to use extra spacing adjustment members or other special parts. It has the advantage of not requiring a waveguide or the like.

The present invention is not limited to the above-mentioned embodiments, and the screwing relationship between the cylindrical body and the mounting material may be swapped between the inside and outside. It may also be possible to connect waveguides. In addition, the pressing member does not necessarily have to be annular and may be made into individual pieces suitable for the mounting screw portion, and can be modified and implemented in various ways. There is no difference whatsoever.

[Brief explanation of the drawing]

FIG. 1 is a side cross section showing the structure of a conventional penetrating portion, and FIG. 2 is a side cross section showing an embodiment of the present invention. In the figure, 11 is a solid wall surface, 12 is a cylindrical body, 13 is a mounting material, 14 is a waveguide, 15 is a flange, 16 is a pressing member, 17 is a mounting screw, 18 is a set screw, 19, 2 river waveguides shows. Figure 7 Figure 2

Claims (1)

[Claims] 1. A cylindrical body that is attached to a location where the waveguide is to be penetrated with the waveguide inside, and attachment of the waveguide that is screwed to the cylindrical body so that its axial position with the cylindrical body can be adjusted and perpendicular to the axis. A structure of a waveguide penetrating portion comprising: a mounting member having a surface at an end; and a pressing member that presses and clamps a flange surface provided on the waveguide to the mounting surface of the mounting member.