US3836946A

US3836946A - Coaxial connector

Info

Publication number: US3836946A
Application number: US00343839A
Authority: US
Inventors: A Geiger
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1972-03-30
Filing date: 1973-03-22
Publication date: 1974-09-17
Anticipated expiration: 1991-09-17
Also published as: YU80073A; DE2215757B2; IT981634B; YU34344B; FR2178181B1; NL7304427A; DE2215757C3; JPS498791A; DE2215757A1; FR2178181A1; SE391842B; JPS5636551B2

Abstract

A coaxial connector for coaxial cables which, in addition to an outer conductor and an inner conductor, comprise a screen surrounding the outer conductor, and wherein a section provided for the connection with a cable and a section provided for connection with another connection member of a connector part are inclined with respect to each other. The screen is continued in the area of the connector by means of a contact side section comprising a threaded cap which closes the section at the side facing away from the contact side and a cable side section which is screwed onto a stud shaped rim of the contact side screen case. The contact side sections of an outer conductor casing which are supported by other stages and which are supported at the screen casing of the inner conductor, and insulation members required for electric insulation in the radial direction are inserted into the contact side screen casing section through the opening which is closed by the threaded cap.

Description

United States Patent 11 1 Geiger 1541 COAXIAL CONNECTOR [75] Inventor: Alfons Geiger, Munich, Germany [73] Assignee: Siemens Aktiengesellsehait, Berlin and Munich, Germany [22] Filed: Mar. 22, 1973 [21] Appl. No.: 343,839

[30] Foreign Application Priority Data 1451 Sept. 17, 1974 Primary ExaminerPaul R. Gilliam Assistant Examiner-Lawrence J. Staab Attorney, Agent, or Firm-Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson [5 7] ABSTRACT A coaxial connector for coaxial cables which, in addition to an outer conductor and an inner conductor, comprise a screen surrounding the outer conductor,

Mar. 30, 1972 Germany 2215757 and wherein a Section Provided for the connection with a cable and a section provided for connection [52] U.S. Cl. 339/177 R, 174/87 with another ect on m e of a connector part [51] Int. Cl H01r 17/04 are inclined with respect to each othcr- The Screen is [58] Field of Search 174/75 C, 86, 87; 339/177 continued in the area of the connector by means of a contact side section comprising a threaded cap which [56] Refer Cit d closes the section at the side facing away from the UNITED STATES PATENTS contact side and a cable side section which is screwed 477 95 l 6 1892 M 174 7 X onto a stud shaped rim of the contact side screencase. 2 152504 3x939 z fi gi 12., X The contact side sections of an outer conductor casing 3432798 3/1969 Brishka 77 R X which are supported by other stages and which are 33301425 9/1970 Vachhani: WI: 339 177 R x Supported at the Screen casing of the inner Conduotot, 3,701,086 10/1972 Somerset 339/177 R and insulation memberS required for electric insulation in the radial direction are inserted into the FOREIGN PATENTS OR APPLICATIONS contact side screen casing section through the opening 920,725 3/1963 Great Britain 339/177 R which is closed by the threaded can 1,157,274 5/1958 France 339/177 E 1,941,267 3/1971 Germany 339/177 E 3 Chums, 2 Drawing Figures 1 P 1 f\ L,

(KKEQA E K L 5 2 13 i -1 zu i n5 W p Q 18 fw %Q 2 1 l I l j 22 COAXIAL CONNECTOR BACKGROUNDOF THE INVENTION- 1. Field of the Invention This invention relates to a coaxial connector which comprises a screen surrounding the outer conductor in addition to the outer conductor and an inner conductor, and more particularly to such a construction wherein a section provided for connection with a cable and a section provided for contacting with another connection element of a connector are inclined with respect to each other.

2. Description of the Prior Art Coaxial cables are required for special purposes in the date transmission technique, which, in addition to a hollow cylindrical outer conductor and an inner conductor extending concentrically within the outer conductor, a metallic cable screen is provided surrounding the outer conductor and separated therefrom by an insulating layer. When sections of such a cable are connected with the help of a coaxial plug connection, it must be provided that the cable screen is insulated from the outer conductor and extended in a high frequency manner of continuity in the zone of the plug connection. For this purpose, therefore, as simple as possible electrical and mechanical connections of a part of such a tri-coaxial plug connection to a cable having the additional screen is to be provided without thereby impairing the cooperable engagement of the individual parts of the plug connector.

SUMMARY OF THE INVENTION It is therefore the primary object of the present invention to provide a tri-coaxial plug connector which complies with the above-mentioned requirements as far as possible.

In achieving the foregoing object, a coaxial plug connection of the type initially mentiond, according to the invention, is provided with a screen casing which continues the cable screen in the zone of the connection. The screen casing comprises a contact side section having a threaded cap which can close this section at a side which is facingaway from the contact side, and a section on the cable side which is screwed onto a stud shaped shoulder of the contact side screen casing section. The contact side sections of an outer conductor casing, which are supported at the screen casing, sections of an inner conductor and sections of insulating material or casing required in the radial direction of electrical insulation, are inserted into the contact side screen casing section through the opening which is closed by the threaded cap.

More specifically, it is provided that the cable side outer conductor casing section of the connector be screwed into a circumferentially flattened zone of the contact side outer conductor casing section, and that the cable side screen casing section comprises an inwardly directed collar at its free end, and that means clamping the screen of a, cable, which must be connected, are mounted between this collar and the frontal side of the tubular stud shaped rim.

This embodiment of a plug connector according to this invention results, amongother things, in the advantage that the outer conductor of a cable to be connected can be connected to the plug connector before the cable side screen casing section has been screwed in, almost as simply as is possible with a plug connector for coaxial cables which compriseonly an inner conductor and an outer conductor.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects, features and advantages of the invention, its organization, construction and operation will DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a plug side part 50 of a tricoaxial plug connector is illustrated as comprising two sections which are engaged at a right angle, namely a contact side section 51 and a cable side section 52. A contact side section 7 of a screen casing continuing a cable screen 22 in the zone of the plug connection serves as a housing and basic component of the contact side section 51. A cable side section 25 of this screen casing is screwed onto a stud shaped rim 53 of the contact side screen casing section 7. The hollow cylindrical contact side screen casing section 7 is closed off with the help of a threaded cap 29 which can be screwed into the section 7 at its rear end, therefore at its side which is facing away from the contact side.

A first casing 4 of insulating material, a contact side outer conductor casing section II, members 2 and 3 of insulating material for centering an inner conductor pin 1, and the inner conductor pin 1 are inserted into the section 7 through the opening which is closed off by the threaded cap 29. All of these parts therefore mutually support each other and support themselves at the contact side screen casing section 7 and are telescopically embodied and related in disposition within the section 7. For accurate electrical sealing of the contact side outer conductor casing section II, the section comprises a ring groove at the end facing away from the threaded cap 29 for receiving a metal disc 27. A cap 28 of insulating material can be inserted between the threaded cap 29 and themetal disc 27 whereby the metal disc 27 presses firmly into the ring groove when the threaded cap 29 is screwed into place.

The contact side outer conductor casing section 11 includes a flat zone 12 which has a threaded bore which is concentric with respect to the stud shaped rim 53. A cable side outer conductor casing section 13 is screwed into this threaded bore. The outer conductor 14 of a coaxial cable to be connected to the plug connector is connected with the cable side outer conductor casing 13 in such a way that it is bent in the opposite direction around a terminal casing 15 which can be shifted onto the outer conductor, and the terminal casing which can be inserted over a wide range of the cable side outer conductor casing section 13 is fixed in this zone by a clamping nut 16, whereby the outer cable conductor is clampingl-y fixed between a clamp casing front and a rim of the cable side outer conductor casing 13' by means of the insertion of the clamping nut.

An inner conductor 8 of a coaxial cable is soldered together with the inner conductor pin 1, whereby the soldering location 26 is positioned within the contact side outer casing section 11 and is accessible via the opening of this casing section with the cap 29, the cap 28 and the metal disc 27 removed. The metallic cable screen 22 is fixed between two complementary plug in

clamping rings

23 and 24 which are supported at an inner shoulder 55 of the cable side screen casing section 25 on the one hand and, on the other hand, at the frontal side 20 of the stud shaped rim 53 of the contact side screen casing section 7 by way of two metallic semirings 21 and a sliding casing 19 which is shiftably arranged within the cable side screen casing section 25. When the cable side screen casing section 25 is screwed onto the stud shaped rim 53, the cable screen 22 is therefore clamped. In order to prevent disruptive arcings between the cable side outer conductor section 13 and the cable side screen casing section 25, a separation casing 18 of insulating material is provided in the stud shaped rim 53 of the contact side screen casing section 7.

In order to clamp an outer coating of insulating material on a cable, a clamping nut which can be screwed onto the cable side end of the cable side screen casing section'25 is provided with a ring bulge 56 which protrudes inwardly and presses fingers 31 at the end of the cable side screen casing section 25 into the cable insulating coating during the screwing in process.

Spring contact casings 3 and are attached on the contact side of the connector, both at the contact side screen casing section 7 and at the contact side outer conductor casing section 11 to springingly engage the outer or inner wall of the corresponding receptacle side screen or outer conductor casing section when the plug part is connected with a receptacle part with the help of their spring tongues. The contact screen casing section 7 is additionally provided with an attachment nut 33 which can be screwed onto the contact side which allows for an axial movement of the plug part in a housing wall 32 between a shoulder of the contact side screen casing section 7 and the attachment nut 33. In order to prevent damage of the contact casings 5, 3 and to guarantee an interference-free cooperation between the plug part and the receptacle part of the connection, the attachment nut 33 is further provided with a guidance outline 57 at its contact side.

A receptacle part, which has not been illustrated and which is required for connection of the two sections of a tri-coaxial cable, in addition to the plug part, is constructed essentially in the same manner as the illustrated plug part.

FIG. 2, however, illustrates a receptacle part 58 as is required for the connection of a tri-coaxial cable to an electrical device. With this receptacle also, a screen casing 38 serves as a basic component and receiving housing for the remaining parts of the receptacle. A casing 37 of insulating material is inserted into the screen casing 38, an outer conductor casing 36 is inserted into the insulating material casing 37, insulating material members 35 are inserted into the outer conductor casing 36, and finally an inner conductor receptacle or bushing 34 is inserted into the insulating material members 35, whereby all of these parts support each other in the plugging direction with the help of shoulders. A threaded ring 46, which can be turned into the screen casing 38 on the device side of the receptacle, will lock the further casing parts of the receptacle which are inserted into the screen casing 38, via a further casing 42 of insulating material which bears against a shoulder 44 of the inner conductor casing 36. The receptacle itself may be fixed by an attachment nut 41 which can be screwed about an outer thread of the screen casing 38 to clamp a device wall 40 between the attachment nut 41 and a shoulder 39 of the screen casing 38. In order to avoid a mutual rotation of the casing parts of the receptacle, a tubing 45 is provided between the casing 37 of insulating material and the casing 42 of insulating material, as well as a margin engaging the casing 37 and worked into a shoulder 44 of the outer conductor casing. A hollow cylindrical cap 47 is snapped over an end of the inner conductor casing 36 protruding from the receptacle on the device side, which terminates in a soldering lug 43, in order to electrically isolate the solder connected components of the inner conductor bushing 34 and the outer conductor casing.

Although I have described my invention by reference to a particular illustrative embodiments, many changes and modifications of the invention may become apparent to those skilled in the art without departing from the spirit and scope of the invention. I therefore intend to include within the patent warranted hereon all such changes and modifications as may reasonably and properly be included within the scope of my contribution to the art.

I claim:

l. A coaxial connector plug having a cable side for receiving coaxial cables which have an inner conductor, an outer conductor, and a screen insulated from and surrounding the outer conductor, and a contact side for engaging a cooperating connector, said connector plug comprising: a screen casing which continues the screen in the zone of the connection including a tubular contact side section, a threaded cap closing said contact side section at an end facing away from the contact side of the plug, and a cable side section, said contact side section having a threaded stud shaped shoulder, said cable side section including a threaded portion engaging said threaded stud shaped shoulder, an outer conductor casing within said said screen casings, an inner conductor pin and insulating casings telescopically related and disposed within the contact side section of the screen casing through the opening that is closed by said threaded cap whereby said inner conductor pin, outer conductor casing, and screen casing are electrically insulated from each other, said outer conductor casing including a contact side segment having a flat portion with a threaded bore therein, and a cable side segment having a threaded portion threading engaging said threaded bore of said flat portion, and said contact side segment and said cable side segment being disposed at right angles to each other.

2. A coaxial connection plug according to claim 1, wherein said cable side section comprises an inwardly directed shoulder at one end and clamping means for clamping the screen of a cable between said shoulder and said threaded stud shaped shoulder.

3. A coaxial connection plug according to claim 1, wherein the axis of the inner conductor of a cable and the axis of said inner conductor pin are at right angles and the inner conductor and said inner conductor pin are soldered together.

Claims

1. A coaxial connector plug having a cable side for receiving coaxial cables which have an inner conductor, an outer conductor, and a screen insulated from and surrounding the outer conductor, and a contact side for engaging a cooperating connector, said connector plug comprising: a screen casing which continues the screen in the zone of the connection including a tubular contact side section, a threaded cap closing said contact side section at an end facing away from the contact side of the plug, and a cable side section, said contact side section having a threaded stud shaped shoulder, said cable side section including a threaded portion engaging said threaded stud shaped shoulder, an outer conductor casing within said said screen casings, an inner conductor pin and insulating casings telescopically related and disposed within the contact side section of the screen casing through the opening that is closed by said threaded cap whereby said inner conductor pin, outer conductor casing, and screen casing are electrically insulated from each other, said outer conductor casing including a contact side segment having a flat portion with a threaded bore therein, and a cable side segment having a threaded portion threading engaging said threaded bore of said flat portion, and said contact side segment and said cable side segment being disposed at right angles to each other.