Coaxial connector

• US 5,879,190 A
• Filed: 04/16/1996
• Issued: 03/09/1999
• Est. Priority Date: 04/18/1995
• Status: Expired due to Term

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Maruyama, Takashi, Kuriyama, Toshitaka
• Primary Examiner(s): Swann, J. J.
• Application Number:
  US08/633,112
• Time in Patent Office: 1,057 Days
• Field of Search: 439/63, 439/581, 439/582
• US Class Current: 439/582
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/44 comprising impedance matching means
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule

Abstract

The invention provides a coaxial connector wherein a bushing can be mounted to a housing more easily, poor pressure resistance and characteristic impedance due to socket displacement can be eliminated, and deformation of the front end of the socket can be prevented. The coaxial connector of the invention includes projections along the outer periphery of the bushing, and cutouts in the housing. The bushing has a cover that covers the upper portion of the socket. In addition, the bushing has a tapered intermediate portion between its base portion and its front end. The bushing is positioned around the axis, and displacement of the mounting position of the socket to the bushing and deformation of the front end of the socket are prevented.

Claims

1. A coaxial connector comprising:

a metallic housing including a cylindrical portion which comes into contact with an outer conductor portion of a receptacle and includes at least one cutout at a top portion thereof, a housing cover for covering an upper opening of said cylindrical portion, and a crimping portion for gripping at least an outer conductor portion of a coaxial cable wherein said cylindrical portion, said housing cover, and said crimping portion are integral with one another;

a socket for electrically connecting to a central conductor portion of said coaxial cable and which comes into contact with a central conductor portion of said receptacle; and

an insulating bushing having holes for holding said socket at a central axis of said bushing, said bushing being mounted in said cylindrical portion of said housing.

wherein said bushing has a bushing cover for covering said holes in said bushing,

wherein an outer periphery of a base portion of said insulating bushing substantially contacts an inner periphery of said cylindrical portion of said metallic housing, and

wherein a front end of said bushing in a direction in which said bushing is inserted into said housing extends up to an end of said socket, and an outer periphery of said front end is smaller than an outer periphery of a base portion of said cylindrical portion of said housing, a tapered intermediate portion interconnecting said front end and a bushing base portion of said bushing which is adjacent said central conductor;

wherein at least one projection not adapted to retain any portion of said coaxial cable projects from an outer periphery of said bushing, and said at least one cutout of said metallic housing engages two sides of said at least one projection is formed along a periphery of said cylindrical portion of said housing to prevent rotation.

2. A coaxial connector according to claim 1, wherein said bushing has two projections formed along said outer periphery of said bushing, and said cylindrical portion has two cutouts for engaging said two projections formed along said periphery of said cylindrical portion of said housing.

3. A coaxial connector according to claim 1, wherein said bushing cover has parallel sides and, when covering said holes in said bushing, said bushing cover is coplanar to a top surface of said outer periphery of said bushing.

4. A coaxial connector according to claim 3, wherein said bushing cover includes a wedge-shaped cutout in a base portion of said bushing cover.

5. A coaxial connector according to claim 1, wherein said bushing cover has a cylindrical side and, when covering said holes in said bushing, covers a top surface of said outer periphery of said bushing.

6. A coaxial connector according to claim 2, wherein said bushing cover has parallel sides and, when covering said holes in said bushing, said cover is co-planar to a top surface of said outer periphery of said bushing.

7. A coaxial connector according to claim 6, wherein said bushing cover includes a wedge-shaped cutout in a base portion of said bushing cover.

8. A coaxial connector according to claim 2, wherein said bushing cover has a cylindrical sides and, when covering said holes in said bushing, covers a top surface of said outer periphery of said bushing.

9. A coaxial connector according to claim 1, wherein said bushing has two holes for holding said socket at said central axis and wherein said socket has two electrode portions, each of said respective electrode portions being inserted in a respective hole of said bushing.

10. A coaxial connector according to claim 4, wherein said socket has a U-shaped cross-section extending into each hole of said bushing and over a surface of said bushing extending between said holes.

11. A coaxial connector according to claim 2, wherein said bushing has two holes for holding said socket at said central axis and wherein said socket has two electrode portions, each of said respective electrode portions being inserted in a respective hole of said bushing.

12. A coaxial connector according to claim 11, wherein said socket has a U-shaped cross-section extending into each hole of said bushing and over a surface of said bushing extending between said holes.