Coaxial connector

• US 5,195,910 A
• Filed: 01/15/1991
• Issued: 03/23/1993
• Est. Priority Date: 01/16/1990
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: Hirose Electric Company Limited, NEC Corporation
• Inventors: Enomoto, Hideyuki, Mitani, Ikujiro
• Primary Examiner(s): PIRLOT, DAVID
• Application Number:
  US07/641,269
• Time in Patent Office: 798 Days
• Field of Search: 439/578-585, 439/675, 439/874
• US Class Current: 439/578
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 4/02 Soldered or welded connections H01R4/625, H01R4/723, H01R12/59 take precedence
• CPC Class Codes: Y10S 439/91 Observation aide, e.g. transparent material, window in housing

Abstract

A coaxial connector for use in connecting a first coaxial cable having a terminal processed in advance, to a second cable. The first cable comprises a central conductor, an insulator surrounding the conductor, a braid surrounding the insulator for shielding the same, and a sheath surrounding the braid for protecting the same. The coaxial connector comprises a sleeve section having an inner peripheral surface in close contact with an outer peripheral surface of the sheath, and a shell section integral with the sleeve section in coaxial relation thereto. A plurality of soldering bores are formed in the shell section and cooperate with each other to form passageway through which molten solder can pass to fill up an annular gap formed between an outer peripheral surface of the braid and an inner peripheral surface of the shell section. The coaxial connector may further comprise at least one cable-sheath viewing bore which is formed in the sleeve section and one can view the presence of the sheath through the viewing bore.

Claims

1. A coaxial connector for use in connecting a first cable having a terminal processed in advance, to a second cable, said first cable comprising a central conductor, an insulator surrounding said conductor, a braid surrounding and shielding said insulator and having an outer peripheral surface, and a sheath surrounding and protecting said braid and having an outer peripheral surface, said coaxial connector comprising:

a sleeve section having an inner peripheral surface in close contact with said outer peripheral surface of said sheath;

a shell section integral with said sleeve section in coaxial relation thereto and having a smaller inner diameter than the sleeve section and an inner peripheral surface; and

at least one viewing bore formed in said sleeve section through which the presence of said sheath may be viewed and a plurality of soldering bores formed in said shell section and arranged peripherally thereof and axially displaced from said viewing bore, said plurality of soldering bores cooperating with each other to form passage means through which molten solder can pass to fill up an annular gap form between said outer peripheral surface of said braid and said inner peripheral surface of said shell section, said molten solder being solidified to connect to said braid to said shell section.

2. The coaxial connector according to claim 1, wherein said plurality of soldering bores are located at the connection between said shell section and sleeve section.

3. The coaxial connector according to claim 1, wherein said shell section is located adjacent to a forward end of said first cable, with said sleeve section located between said shell section and the remainder of said first cable.

4. The coaxial connector according to claim 1, further comprising a coupling nut fitted about said shell section for sliding movement therealong, and a contractible tube fitted about said sleeve section, said contractible tube having a forward end thereof which partially covers each of said plurality of soldering bores.

5. An apparatus for connecting a coaxial cable comprising:

a single, monolithic coaxial connector piece including;

a shell portion having a shell central bore for receiving a braided portion of an external coaxial cable, and a plurality of soldering holes formed in said shell portion, and

a sleeve portion, adjacent and coaxial to the shell portion, having a sleeve central bore for receiving an insulating sheath portion of the external coaxial cable, the sleeve central bore being larger than the shell central bore, and a viewing bore through which the presence of said sheath may be viewed, said viewing bore being axially displaced from said soldering holes; and

a coupling nut rotatably mounted to the shell portion of said single coaxial connector piece.

6. An apparatus as recited in claim 5 wherein an inner diameter of the sleeve portion is substantially in agreement with an outer diameter of the external coaxial cable.

7. An apparatus as recited in claim 5, further comprising a contractible tube fitted over the sleeve portion, the contractible tube having a forward end which partially covers each of the plurality of soldering bores.

8. An apparatus as recited in claim 5, further comprising a cable-sheath viewing hole formed in the sleeve portion so that the presence of the insulating sheath portion can be confirmed.

9. An apparatus as recited in claim 8 wherein the cable-sheath viewing hole being formed adjacent to where the sleeve portion and the shell portion are joined.

10. A coaxial connector connecting a coaxial cable comprising:

a shell section having a shell central bore for receiving a braided portion of an external coaxial cable, and a plurality of soldering holes formed in said shell section; and

a sleeve section, coaxially connected to said shell section, having a sleeve central bore for receiving an insulating sheath portion of the external coaxial cable, the sleeve central bore being larger than the shell central bore, and having a cable sheath viewing hole formed in said sheath section and axially displaced from said soldering holes so that the presence of the sheath can be confirmed.

11. A coaxial connector as recited in claim 10, wherein the cable-sheath viewing hole being formed adjacent to where said sleeve section and said shell section are coaxially connected.

12. A method for attaching a coaxial cable to a coaxial cable connector comprising the steps of:

inserting a previously processed end terminal of a coaxial cable into a single coaxial connector piece having a first portion with a first diameter bore and a second portion with a smaller second diameter bore, including inserting an insulating sheath portion of the coaxial cable into the first diameter bore until the sheath portion appears through a viewing port in the first portion to mechanically support the insulating sheath portion, and inserting a braided portion of the coaxial cable into the second diameter bore;

soldering the braided portion of the coaxial cable to the single coaxial connector piece by flowing solder through a plurality of soldering holes provided in the second portion and axially displaced from the viewing port to provide electrical and fixed connection between the coaxial cable and the single coaxial connector piece; and

rotatably mounting a connecting nut to the portion of the single coaxial connector piece having the first diameter bore.