US3712644A - Connector for a millimeter waveguide - Google Patents

Connector for a millimeter waveguide Download PDF

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Publication number
US3712644A
US3712644A US00146321A US3712644DA US3712644A US 3712644 A US3712644 A US 3712644A US 00146321 A US00146321 A US 00146321A US 3712644D A US3712644D A US 3712644DA US 3712644 A US3712644 A US 3712644A
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US
United States
Prior art keywords
waveguides
pair
cylindrical
threads
spacer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00146321A
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English (en)
Inventor
A Takai
A Hara
H Naganuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
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Publication of US3712644A publication Critical patent/US3712644A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/061—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/04—Fixed joints
    • H01P1/042—Hollow waveguide joints

Definitions

  • ABSTRACT v A connector for millimeter or other types waveguides, wherein packing material and push rings are firmly disposed between connecting sleeve and waveguides with spacer rings provided between the connecting sleeve and waveguides. Alignment of the waveguides is effected at the time of connection. The interconnecting surfaces of the parts are superfine finished so that tolerances are met and bending amount at the connecting parts is kept minimal.
  • This invention relates to a connector for a millimeter or other types of waveguides.
  • Such waveguides can be disposed in the ground or in the air and can be used to transmit different wave signals.
  • waveguides There are two kinds or types of waveguides. One type has a copper plating with a resin lining on its inner surface. Another type is the helical waveguide in which a wire is wound around its inner surface. Gas having a pressure of about 1 Kg/cm is sealed in the waveguides.
  • the signals being transmitted by prior guides were often impaired, by such factors as unevenness or bending of the inner surface of the waveguide and warping or folding of a core thereof.
  • tolerances are usually strictly set,'for example, by staggering the core at the connecting part, and bending it either at the time of connecting the connecting part in the straight condition, or at the time of bending the passage to about 30 m radius of curvature.
  • tolerances are usually strictly set,'for example, by staggering the core at the connecting part, and bending it either at the time of connecting the connecting part in the straight condition, or at the time of bending the passage to about 30 m radius of curvature.
  • One prior art structure is a bat flange. This structure isrelatively air tight, and prevents warping of the core. However its outer diameter is so large that a plurality of pipes cannot beprovided at one pit or stand. Thus, this type of flange is not suitable for practical use.
  • twist waveguide Another prior art type -is the twist waveguide. This type has a long flat processing part. But, disadvantageously, if a small amount of dust is deposited on v the body, nibbles are caused on the body-and sleeve and prevents airtight seal, and lowers working efficien-
  • a third prior art type is a caulking or spring waveguide. Although this type has some merit, it has shortcomings in being difficult to connect.
  • a fourth type of'wave guide has been proposed using an O-ring.
  • a waveguide is screwed into a connecting sleeve and thereafter the O-ring is temporarily placed outside of the connector with a driver like tool.
  • the mounting step maycause flaws to the O-ring, or cause it to be inexactly set. In either case, there is lack of air tight seal.
  • a system of double tubes is often adopted for fabricating millimeter waveguides.
  • the connection is performed while the waveguide is being brought into the connect-sleeve. It is preferable that this moving force be obtained by screws formed at the central part of the connecting sleeve as well as a screw structure or threads located at end parts of the interconnecting waveguides.
  • Such connectors may display excellent performance at the time of arrangement of the straight passage.
  • the connectors are connected by moving the waveguide to make the axial direction thereof by use of the length of the threaded part, which is disadvantageous and troublesome.
  • An object of this invention is to remove the foregoing and other disadvantages of the prior art arrangements.
  • Other objects of the invention are to keep substantially perfect air tight seal of the gas in the wave guide, to improve the strength of the mechanical connector, to obtain a highly precise alignment which is kept within certain tolerances, such as those discussed above, to simplify connecting and exchange at the halfways of the passages, and to heighten the workings thereof.
  • the invention employs two spacer rings to engage by means of threads the waveguides with connecting sleeves having therein the spacer rings.
  • Connecting surfaces are respectively formed between I v and the inner surfaces of the connecting sleevesand the spacer rings.
  • the waveguides are set while the alignment is being effected automatically at the two connecting surfaces.
  • the spacer rings are aligned in the inside of the'connecting sleeves. The air tight condition is provided by pressing the packings while the exact alignment is being effected.
  • Both waveguides are easily connected by mounting the push rings onto the outer parts of the waveguides, subsequently positioning the connecting sleeve having at its inner sidethe spacer rings between the end portions of both waveguides, and rotating the push rings.
  • the waveguides are easily and exactly exchanged since they are fabricated by removing either of the push rings, instead of moving and/or rotating the waveguide as done in the prior art.
  • a further object of the invention is to obtain a waveguide which may be used to connect differently shaped waveguides or connecting parts between structures.
  • Another object is to obtain a strong connector for waveguides of comparatively small size in comparison with the conventional flanged one or others while maintaining the other favorable characteristics. Since the invention disposes the spacer rings, the connecting sleeve and push rings on the outer surface of the waveguides, these members are not bulky. Also, any protective coating would be on the outside and be of small size or diameter; thus, operation and utility would be improved.
  • FIG. 1 is a side view, partially in section, showing an illustrative embodiment of the invention.
  • FIG. 2 depicts a cross-sectional view of another spacer ring.
  • waveguides (1) and (2) which are to be connected, namely at the outer peripheries of the end portions thereof, are depicted having threads (11) and (12) formed at the ends.
  • Spacer rings (3) and (4) are screwed thereon to face each other.
  • the rings (3) and (4) are formed with a first connecting surface A of superfine finishing, the connecting surface being between the inner surface thereof and the outer surface of the waveguides.
  • a second chamfered connecting surface B of superfine finishing of substantially the correct size is located between the outer surface of spacer rings (3) and (4) and the inner surface of connecting sleeve (10).
  • Attaching portion (19) is formed between waveguide (1) and the inner surface of one end portion of connecting sleeve (10) in order to attach a wedge shaped rubber packing (5) and a push ring (6).
  • Attaching portion (18) is formed between waveguide (2) and the inner surface of another end portion of connecting sleeve in opposition to the attaching portion (19), in order to attach a packing (8) and a'push ring (7).
  • Packings (5) and (8) are provided, respectively, with back-up rings (5') and (8') to enable the push rings to easily rotate.
  • Threads (23) and (24) are formed on the outer surfaces push rings (6) and (7) to be threaded into connecting sleeve (10).
  • An O-ring (9) of circular cross section is furnished between the end portion of spacer ring (4) and packing (8) as depicted.
  • Threads (14) are formed between connecting sleeve (10) and the outer circumference of the spacer ring (4) located behind O-ring (9).
  • the reference numerals (l6) and (17) are holes formed in the push rings (6) and (7) and used for rotating the push rings. Number denotes a concave shaped opening formed at the center of push ring (7).
  • the connecting sleeve (10) has formed at its inside a convex portion (13) which contacts the end portion of spacer ring (3) so that connecting sleeve (10) and spacer ring (4) are fixed at a desired position.
  • connecting sleeve (10) may be screwed to the right at the time of connecting of connecting sleeve (10) and spacer ring (4). This clamps or tightens thread (12) through thread (14) and thus waveguide (2) and spacer ring (4) are connected thereby to subsequently tighten or clamp thread (14).
  • spacer ring (3) may come out from the waveguide because of the friction between connecting surface B of the superfine finishing and convex portion (13).
  • connecting sleeve (10) is provided at its end portion with convex portion (13)
  • spacer ring (3) contacts with the end portion of spacer ring (4) to prevent it from coming out.
  • connecting sleeve (10) may be positioned at the desired location.
  • this spacer ring (3) may be made as a lock nut, such as that shown in FIG. 2.
  • FIG. 2 there is depicted a lock nut comprising a first piece (3a) and a second piece (3b) and engaging steps (21) and (22) which may be mutually engaged.
  • the waveguides (1) and (2) are substantially prevented from warping at the core. Furthermore, bending is prevented by finishing surface C.
  • the rigid connecting conditions are satisfied for connectors of waveguides.
  • Gaseous material such as nitrogen gas, having a pressure of from 0.5 to 1.5 Kg/cm is sealed in the waveguides (1) and (2).
  • the sealed or airtight condition is kept with the wedge shaped rubber packings (5) and (8) and the O-ring, to thereby produce a connector for waveguides which does not impair the transmission characteristics of the waves.
  • the connection can also be effected for different types and shapes of waveguides.
  • A. spacer means comprising a pair of cylindrical sleeves having threads on the inner surface thereof suitable for engagement with said threads of said wave guides when in a connected position and having cylindrical surfaces for engaging cylindrical surfaces of said wave guides adjacent their threads;
  • connecting means comprising sleeve means for fitting about and interconnecting said pair of cylindrical sleeves and said end portions of said wave guide in said connected position
  • said connecting means having toward one end thereof a convex portion for holding in said connected position the non-engaged end of one of said pair of cylindrical sleeves and having toward the other endthereof thread means for engaging the non-engaged end of the other of said pair of cylindrical sleeves, said sleeve means having an internal cylindrical surface engaging cylindrical surfaces on said spacers; V
  • packing means comprising a pair of wedge shaped packing material disposed between the ends of said sleeve means and the outer surface of said wave guide;
  • said spacer means comprises a lock nut type system having a first piece and a second piece both shaped to be mutually engageable with each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Waveguide Connection Structure (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Joints With Pressure Members (AREA)
US00146321A 1970-05-25 1971-05-24 Connector for a millimeter waveguide Expired - Lifetime US3712644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970050260U JPS5222193Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-05-25 1970-05-25

Publications (1)

Publication Number Publication Date
US3712644A true US3712644A (en) 1973-01-23

Family

ID=12853994

Family Applications (1)

Application Number Title Priority Date Filing Date
US00146321A Expired - Lifetime US3712644A (en) 1970-05-25 1971-05-24 Connector for a millimeter waveguide

Country Status (6)

Country Link
US (1) US3712644A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5222193Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH536031A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE7120316U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2090277B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1356966A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947785A (en) * 1973-02-02 1976-03-30 Industrie Pirelli Societa Per Azioni Method and apparatus for joining a flexible waveguide to another element
US5208569A (en) * 1992-06-03 1993-05-04 The United States Of America As Represented By The United States Department Of Energy Simplified flangeless unisex waveguide coupler assembly
US5870062A (en) * 1996-06-27 1999-02-09 Andrew Corporation Microwave antenna feed structure
EP1076198A1 (en) * 1999-08-09 2001-02-14 Aeroquip Corporation Coupling
WO2021191599A1 (en) * 2020-03-23 2021-09-30 Poulton Technologies Limited Connector assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962991A (en) * 1985-01-23 1990-10-16 Raytheon Company Quick-disconnect waveguide connector assembly
RU2741777C1 (ru) * 2020-06-11 2021-01-28 Акционерное общество «Российская корпорация ракетно-космического приборостроения и информационных систем» (АО «Российские космические системы») Быстроразъёмное соединение волноводов

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US174572A (en) * 1876-03-07 Improvement in pipe-connections for ice-machines
US318356A (en) * 1885-05-19 Thirds to simon
US607180A (en) * 1898-07-12 landis
US1506564A (en) * 1923-05-19 1924-08-26 Cattoni Albino Pipe coupling
US2374266A (en) * 1944-07-10 1945-04-24 Barr Oscar Lock nut
US3275347A (en) * 1958-07-25 1966-09-27 Gen Dynamics Corp Coupling for conduits through bulkheads
US3500264A (en) * 1966-02-04 1970-03-10 Amp Inc Connection means for waveguide means
US3560029A (en) * 1965-07-01 1971-02-02 Amp Inc Connection means for wave guide means

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE674C (de) * 1877-09-03 H. dietrich, Schlosser- und Maschinenbaumeister, in Potsdam Elastisches Ortscheit
US1378015A (en) * 1920-04-30 1921-05-17 Erickson Frederic Wm Conduit-pipe coupling
US1707087A (en) * 1924-08-27 1929-03-26 Wilber R Little Union coupling
US1898617A (en) * 1930-10-30 1933-02-21 Thomas & Betts Corp Union
US1993372A (en) * 1931-02-24 1935-03-05 Jones Frederick George Screwed pipe joint and in fittings relating thereto
DE1248129B (de) * 1966-03-18 1967-08-24 Felten & Guilleaume Carlswerk Verbindung fuer elektrische Rundhohlleiter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US174572A (en) * 1876-03-07 Improvement in pipe-connections for ice-machines
US318356A (en) * 1885-05-19 Thirds to simon
US607180A (en) * 1898-07-12 landis
US1506564A (en) * 1923-05-19 1924-08-26 Cattoni Albino Pipe coupling
US2374266A (en) * 1944-07-10 1945-04-24 Barr Oscar Lock nut
US3275347A (en) * 1958-07-25 1966-09-27 Gen Dynamics Corp Coupling for conduits through bulkheads
US3560029A (en) * 1965-07-01 1971-02-02 Amp Inc Connection means for wave guide means
US3500264A (en) * 1966-02-04 1970-03-10 Amp Inc Connection means for waveguide means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947785A (en) * 1973-02-02 1976-03-30 Industrie Pirelli Societa Per Azioni Method and apparatus for joining a flexible waveguide to another element
US5208569A (en) * 1992-06-03 1993-05-04 The United States Of America As Represented By The United States Department Of Energy Simplified flangeless unisex waveguide coupler assembly
US5870062A (en) * 1996-06-27 1999-02-09 Andrew Corporation Microwave antenna feed structure
EP1076198A1 (en) * 1999-08-09 2001-02-14 Aeroquip Corporation Coupling
WO2021191599A1 (en) * 2020-03-23 2021-09-30 Poulton Technologies Limited Connector assembly
US12110994B2 (en) 2020-03-23 2024-10-08 Poulton Technologies Limited Connector assembly

Also Published As

Publication number Publication date
CH536031A (fr) 1973-04-15
JPS5222193Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-05-21
GB1356966A (en) 1974-06-19
FR2090277B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-04-26
DE7120316U (de) 1973-06-14
FR2090277A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-01-14
DE2125902B2 (de) 1972-08-17
DE2125902A1 (de) 1971-12-02

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