JP2010021923A - Waveguide connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure in which even a waveguide that has ruggedness on a junction surface, can be easily connected and disconnected on a temporary experimental stage. <P>SOLUTION: In a waveguide connection structure for connecting a waveguide 1 via flanges 2 each provided in an end of the waveguide, two portions of the bonded two flanges are held between flange clips 9, respectively. The flange clip includes an openable crimping piece 23, a spring member 17 for biasing the crimping piece in a direction to close it, and an engage pin which is provided in the crimping piece and can be engaged and disengaged to and from a bolt fastening hole opened in the flange. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connection structure in a temporary experimental stage of a waveguide.

  A waveguide is a rectangular cross-section hollow tube, and is used as a propagation path of electromagnetic waves in a frequency range from microwave to millimeter wave.

  First, referring to FIG. 14, a connection structure in a temporary experimental stage of a conventional waveguide will be described.

  A flange portion 2 is provided at an end portion of the waveguide 1, and the waveguides 1 and 1 are connected to each other through the flange portions 2 and 2. The flange portion 2 has a guide pin 3, a guide hole 4 into which the guide pin 3 of the opposing flange portion 2 is fitted, and a screw hole 6 for fastening with a screw 5.

  The waveguides 1 and 1 are connected to each other at the convex portion 7 on which the joint surface of the flange portion 2 is formed, the guide pin 3 is inserted into the guide hole 4 and positioned, and then the screw 5 and a nut 8 are used for fastening.

  However, in the temporary experimental stage, the frequency of connection and disconnection is high, and the screw must be fastened and removed each time, which makes the work extremely complicated and consumes more time than the original experimental work. there were. Furthermore, with respect to the millimeter wave band waveguide connecting portion, the connecting portion is also miniaturized, and thus the above-mentioned problem may become more conspicuous in screw fastening and removal.

  As a waveguide fastening clamper having a connection structure of the waveguide 1 in a temporary experimental stage, there is one disclosed in Patent Document 1.

Japanese Patent Laid-Open No. 3-85901

  The waveguide connection structure of Patent Document 1 is shown in FIGS.

  The flange clip tool 9 used for the waveguide connection of Patent Document 1 includes a pair of flat plate portions 11 formed by bending a plate material, a plate spring portion 12 continuous with the flat plate portions 11 and 11, and a wire rod. And a fitting slit 14 is formed in the central portion of the leaf spring portion 12. The waveguide 1 is inserted through the fitting slit 14, and the flange portion 2 is held and connected by the flat plate portions 11 and 11.

  However, since the connection structure of Patent Document 1 has one point of action, when the flange portion 2 has the convex portion 7, the opposite side of the point of action floats and cannot be properly connected. Therefore, in the connection structure of Patent Document 1, the joint surface of the flange portion 2 needs to be flat.

  In view of such a situation, the present invention provides a structure that can be easily connected and disconnected even in a temporary experimental stage, even in a waveguide having an uneven portion on a joint surface.

  The present invention provides a waveguide connection structure in which a waveguide is connected via a flange portion provided at an end portion of the waveguide, and the two portions of the joined two flange portions are each held by a flange clip device. The flange clip device can be opened and closed, a spring member that biases the holding piece in the closing direction, and a bolt fastening hole provided in the holding piece and formed in the flange portion. The invention relates to a waveguide connection structure having possible engagement pins.

  According to the present invention, in the waveguide connection structure in which the waveguide is connected via the flange portion provided at the end portion of the waveguide, the two flange portions joined to the flange clip device are respectively connected. The flange clip tool is provided in a bolt fastening hole provided in the holding piece and provided in the holding piece, and a spring member for biasing the holding piece in a closing direction. In the temporary experimental use, even if the flange portion of the waveguide is convex or convex, it can be easily connected and removed, and further, screws and Since a nut is not used, it is possible to significantly shorten the time required for connection and removal in the experimental stage.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 to 6, a first usage example of the first embodiment of the present invention will be described. 1 to 6, the same components as those shown in FIG. 14 are given the same reference numerals, and the equivalent components in FIGS. 5 and 6 are omitted.

  The waveguide 1 has a flange portion 2 at the end. The flange portion 2 is provided with a screw hole 6 for inserting a bolt for joining the flange portions 2 and 2 together with a bolt. When the waveguide 1 is finally connected, a bolt is inserted into the screw hole 6 and fastened with the flange portion 2 joined. In order to temporarily join the waveguide 1, the flange portion 2 is held by a pair of flange clip tools 9, 9. Since the flange clip tools 9 and 9 have the same mechanism, the flange clip tool 9 will be described below.

  The flange clip 9 for connecting the waveguide 1 via the flange portion 2 includes a pair of clips 16 and 16 that are rotatably connected via a coupling shaft 15, and the clips 16 and 16. The clip portion 18 includes a spring 17 provided, and includes a clamp portion 26 including an L-shaped sheet metal 19, a screw 21, a nut 22, a holding piece 23, a pin fixing screw 24, and a positioning pin 25. The flange clip 9 has a rotating structure around the coupling shaft 15 with the clip 16 as a force point and the holding piece 23 on the positioning pin 25 side as an action point.

  The flange clip 9 has a structure in which the clip 16 is urged in the opening direction by the elasticity of the spring 17 and the L-shaped sheet metal 19 is urged in the closing direction via the coupling shaft 15. The L-shaped sheet metal 19 has a crank shape in which one end of the sheet metal is bent at an acute angle according to the angle of the clip portion 18 and the other end is bent at a right angle in the opposite direction.

  An acute angle portion 19 a of the L-shaped sheet metal 19 is fixed to the clip portion 18, and a right angle portion 19 b is fastened by one end of the holding piece 23, the screw 21, and the nut 22. The positioning pin 25 is fixed to the other end portion of the holding piece 23 by the pin fixing screw 24. Note that a bolt portion may be formed at one end of the positioning pin 25 and directly screwed to the holding piece 23.

  Examples of use of the flange clip device 9 described above will be described below.

  In the pair of flange portions 2 and 2 having the convex portions 7, the guide pins 3 are inserted into the guide holes 4, and the flange portions 2 and 2 are brought into contact with each other.

  When connecting the waveguides 1 and 1, by applying an external force to the clip 16 of the flange clip 9, the gripping piece 23 rotates in the opening direction via the coupling shaft 15. The positioning pin 25 is opened together with the holding piece 23.

  The opened positioning pin 25 is aligned with the position of the screw hole 6 and the external force is removed, whereby the holding piece 23 is rotated in the closing direction, and the positioning pin 25 is inserted into the screw hole 6 and closed. The gripping piece 23 grips the flange portion 2. Similarly, the positioning pin 25 is inserted into the screw hole 6 that is symmetric with respect to the center by using the flange clip 9 and is clamped by the clamping piece 23 so that screws and nuts can be secured. The structure which connects the said waveguides 1 and 1 easily without using is implement | achieved. Since the positioning pin 25 is inserted into the screw hole 6 and fixed, the flange clip tool 9 is not displaced from or detached from the flange portion 2 even when subjected to some impact.

  When only one flange clip tool 9 is used, there is only one point of action, and the opposite side of the point of action floats so that the waveguides 1 and 1 cannot be properly connected. Two are used and fixed at two positions symmetrical about the center.

  When disconnecting the waveguides 1, 1, an external force is applied to the clip 16 to rotate the gripping piece 23 in the opening direction, and the positioning pin 25 is removed from the screw hole 6. Then, the flange clip device 9 is removed from the flange portion 2. Similarly, an external force is applied to the clip 16 attached to the facing surface, the positioning pin 25 is removed from the screw hole 6 and removed from the flange portion 2, so that the waveguide What connected 1 and 1 is removed, and the connection of said waveguides 1 and 1 can be cancelled | released easily.

  Next, a second usage example of the first embodiment of the present invention will be described with reference to FIGS. 7 to 9, the same components as those shown in FIGS. 1 to 6 are denoted by the same reference numerals, and the description thereof is omitted.

  In the second usage example, the flanges 2, 2 are joined by the convex portion 7 formed on the one flange portion 2 and a flat surface 27 on the other flange portion 2.

  Also in the second usage example, the waveguides 1 and 1 can be connected and disconnected in the same procedure as in the first usage example.

  Next, a third usage example of the first embodiment of the present invention will be described with reference to FIGS. 10 to 12, the same components as those shown in FIGS. 1 to 6 are denoted by the same reference numerals, and the description thereof is omitted.

  In the joint surface of the flange portions 2 and 2 in the third usage example, the convex portion 7 is formed on the one flange portion 2, and the concave portion 28 is formed on the other flange portion 2. The flange portions 2 and 2 are fitted to each other.

  Also in the third usage example, the waveguides 1 and 1 can be connected and detached in the same procedure as in the first usage example and the second usage example.

  Next, FIG. 13 shows a second embodiment. In FIG. 13, the same components as those shown in FIG. 1 to FIG.

  The flange clip device 9 according to the second embodiment includes a coupling shaft 15, a clip 16, a spring 17, a holding piece 23, and a positioning pin 25. The flange clip 9 has a rotating structure around the coupling shaft 15 with the clip 16 as a force point and the holding piece 23 on the positioning pin 25 side as an action point.

  The flange clip tool 9 has a structure for urging the clip 16 in the opening direction using the elasticity of the spring 17 and urging the holding piece 23 in the closing direction via the coupling shaft 15. Yes. The spring 17 is a compression coil spring. The positioning pin 25 has a bolt portion formed at one end, and the bolt portion is directly screwed to the holding piece 23.

  The method of connecting the waveguides 1 and 1 using the flange clip tool 9 in the second embodiment is the same as that in the first embodiment. By applying an external force to the clip 16, the holding piece 23 and the positioning pin 25 screwed to the holding piece 23 rotate in the opening direction.

  By aligning the opened positioning pin 25 with the position of the screw hole 6 and removing the external force, the gripping piece 23 rotates in the closing direction, and the positioning pin 25 is inserted into the screw hole 6. By fixing the screw hole 6 in a symmetrical position with respect to the center with the flange clip device 9, the flange portions 2 and 2 are held by the flange clip device 9, and the waveguides 1 and 1 are connected to each other. Connected.

  When removing the waveguides 1 and 1, an external force is applied to the clip 16, and the positioning pin 25 is removed from the screw hole 6. By removing the flange clip tool 9 on the opposite side, the one that has connected the waveguides 1 and 1 is removed, and the connection between the waveguides 1 and 1 is released.

  As described above, also in the second embodiment, a structure for easily connecting and disconnecting the waveguides 1 and 1 without using screws and nuts is realized.

  Needless to say, even when the pair of waveguides 1 and 1 having a flat joint surface of the flange portion 2 are connected and disconnected, it can be easily connected and disconnected.

It is a perspective view of the connection structure of the waveguide which shows the 1st Embodiment of this invention. It is a front view of the connection structure of the waveguide which shows the 1st Embodiment of this invention. It is a principal part expansion perspective view which shows the 1st usage example of the 1st Embodiment of this invention. It is a principal part enlarged front view which shows the 1st usage example of the 1st Embodiment of this invention. It is a front view which shows the 1st usage example of the 1st Embodiment of this invention. It is a perspective view which shows the 1st usage example of the 1st Embodiment of this invention. It is a principal part expansion perspective view which shows the 2nd usage example of the 1st Embodiment of this invention. It is a principal part enlarged front view which shows the 2nd usage example of the 1st Embodiment of this invention. It is a front view which shows the 2nd usage example of the 1st Embodiment of this invention. It is a principal part expansion perspective view which shows the 3rd usage example of the 1st Embodiment of this invention. It is a principal part enlarged front view which shows the 3rd usage example of the 1st Embodiment of this invention. It is a front view which shows the 3rd usage example of the 1st Embodiment of this invention. It is a principal part enlarged front view which shows the 2nd Embodiment of this invention. It is a perspective view which shows the conventional waveguide connection. It is a perspective view which shows the waveguide connection structure of patent document 1. FIG. It is a side view which shows the waveguide connection structure of patent document 1. It is a front view which shows the waveguide connection structure of patent document 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waveguide 2 Flange part 3 Guide pin 4 Guide hole 6 Screw hole 7 Convex part 9 Flange clip tool 15 Connection shaft 16 Clip 17 Spring 18 Clip part 23 Grip piece 25 Positioning pin 26 Clamp part 27 Flat surface 28 Concave part

Claims (1)

  In a waveguide connection structure in which a waveguide is connected via a flange portion provided at an end portion of the waveguide, two portions of the joined two flange portions are each held by a flange clip tool, and the flange The clip device is an openable / closable holding piece, a spring member that urges the holding piece in the closing direction, and an engagement that is provided in the holding piece and is detachable into a bolt fastening hole formed in the flange portion. A waveguide connection structure comprising a pin.

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