US3743979A - Filtered connector with barrel spring contact - Google Patents

Filtered connector with barrel spring contact Download PDF

Info

Publication number
US3743979A
US3743979A US3743979DA US3743979A US 3743979 A US3743979 A US 3743979A US 3743979D A US3743979D A US 3743979DA US 3743979 A US3743979 A US 3743979A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
tube
connector
filter
contact
means
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
Inventor
F Schor
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.)
AMP Inc
Original Assignee
AMP Inc
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
Grant date

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/719Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7197Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/02Contact members
    • H01R13/20Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Abstract

In a filtered connector a conductive metal tube has a barrel spring contact for receiving a mating pin and another spring contact for making electrical connection to the inside conductive surface of the pin filter. Both of the aforesaid spring contacts are formed from wall portions of the metal tube, and are therefore integral with the tube itself. A wire well at the end of the tube receives the wire which is crimped into the well. A molded plastic jacket has protruding hollow cylinders which form a jacket for the tube. The tube has an open end which receives the pins of a mating connector.

Description

United States Patent Schor July 3, 1973 FILTERED CONNECTOR WITH BARREL 3.539.973 10/1970 Antes et al 333/79 SPRING CONTACT 3.535.676 i0/l970 Schultz 333/79 Ferdinand William Schor, Altadena, Calif.

Assignee: AMP Incorporated, Harrisburg, Pa.

Filed: July 15, 1971 Appl. No.: 162,864

Inventor:

References Cited UNITED STATES PATENTS 8/1965 Dahlen 333/79 5/1969 Schor 333/79 Primary Examiner-Rudolph V. Rolinec zgsistam Examiner-Saxfield Chatmon, Jr.

Anorney-William J. Keating, Jay L. Seitchick et al.

[ 5 7 ABSTRACT in a filtered connector a conductive metal tube has a barrel spring contact for receiving a mating pin and another spring contact for making electrical connection to the inside conductive surface of the pin filter. Both of the aforesaid spring contacts are formed from wall portions of the metal tube, and are therefore integral with the tube itself. A wire well at the end of the tube receives the wire which is crimped into the well. A molded plastic jacket has protruding hollow cylinders which form a jacket for the tube. The tube has an open end which receives the pins of a mating connector.

9 Claims, 2 Drawing Figures Patented July 3, 1973 2 Sheets-Sheet 2 FILTERED CONNECTOR WITH BARREL SPRING CONTACT BACKGROUND OF THE INVENTION This invention relates to filtered connectors and more particularly to a connector in which a tubular member provides spring contact for both the mating pin and the filter.

Connector pin filters are shown in US. Pat. Nos. 3,447,104 Schor, 3,435,387 Reinke et al., 3,002,162 Garstang. Copending application Ser. No. 883,501, filed Dec. 9, 1969, in the name of William B. Fritz, describes a particularly advantageous pin filter.

These filters commonly include an extruded tube of ferrite. The pin is inserted in the extruded tube and makes contact with an inner conducting layer deposited on the ferrite. A dielectric layer is coated on the ferrite and an outer conductive layer is deposited, as by plating or painting, on the dielectric. This outer conductive layer is generally the common or ground terminal for all filters in a connector. A ground plane in the connector provides a common connection to all of the outer conductors of the filters in the connector.

Some connectors have extremely small, closely spaced pins. In some connectors of this type, the filters have been assembled to the contact pin. Such a connector has the disadvantage that breakage of the filter pin assemblies sometimes occurs while crimping on the lead-in wires. Since the filter pin assemblies are relatively expensive, this is a decided disadvantage.

SUMMARY OF THE INVENTION In accordance with an important aspect of this invention the wire is pre-crimped into the wire well of the tubular member having two spring contacts. Thereafter the tube is inserted through the filter which is permanently assembled in the connector body. The protruding end of the tube is relatively thick and is not subject to breakage. However, even if there is breakage, the tube can be withdrawn and another inexpensive tube can be inserted in the connector.

The protruding end of the tube has an opening to receive the thin pins of a mating connector. These pins are recessed so that they are not as subject to breakage as would otherwise be the case. The protruding, or contact end of the tube has a barrel spring integral with the tube itself, which spring exerts pressure against the mating pin. The center of the tube has another integral spring which makes contact with the filter. In this manner, electrical connection is made to the pin and the filter by the same conductive metal tube.

In accordance with another aspect of this invention, a molded plastic jacket has a plurality of protruding hollow cylinders which fit over the protruding metallic tubes of the connector. These form a jacket for the contact section of the metal tube.

The foregoing and other objects, features and advantages of the invention will be better understood from the following more detailed description and appended claims.

DESCRIPTION OF THE DRAWINGS DESCRIPTION OF A PARTICULAR EMBODIMENT The connector assembly of the invention comprises a connector shell 11. A plurality of pin filters are mounted in the shell, only one of the filters 12 being shown for clarity. These filters are tubular and are commonly an extruded tube of ferrite coated with a dielectric, commonly a barium titanate compound. An outer conductive layer is deposited on the barium titanate. The outer conductive layer on the filter is usually the common connection. A pair of ground planes 13 and 14 of conductive metal provide a low impedance common connection to the outer conductors of all filters. This ground plane arrangement is more fully described in a copending application entitled Filter Pin Connector Having Low Ground Return Impedance, application Ser. No. 109,423, filed Jan. 25, I971, Fritz and Schor.

The connector assembly further includes a front insulator 15 and rear insulators l6 and 17 which are of hard phenolic material. A retention spring 18 holds the front assembly in place.

In accordance with this invention a conductive metal tube 19 makes electrical contact with the inside conductor of the filter 12 and with the mating pin. Commonly the tube 19 will be constructed of hard beryllium copper. The tube 19 has a wire receiving portion at one end comprising, for example, a wire well 20 which is crimped onto the tube 19.

The tube 19 has a barrel-type outer spring 21 in the middle. The tube is inserted in the filter 12. This spring 21 exerts pressure against the inner surface of the filter to make a good electrical connection to it.

A contact section 22 at the outer end of tube 19 extends from the front assembly. This section has an end opening 23 adapted to receive a pin of the mating conductor. The contact section 22 has an inner, barreltype, spring 24 which exerts pressure against the mating pin to establish a good electrical connection to the pin. As an important aspect of the invention, each of the two spring contacts 21 and 24 is formed by cutting a number of narrow parallel slots in the wall of tube 19, directed along the longitudinal axis of the tube, and bending or bowing the arms thus formed between the slots awayfrom the surface of the tube to serve as spring contact elements 21a and 24a. The contact 21 of course has the elements 21a thereof bent outwardly of the tube and the other contact 24 has its elements 24a bent inwardly. It should be noted that the protrud ing contact section 22 is of larger size than the mating pin and hence is more sturdy. Furthermore, the mating pins are recessed so that they are not as subject to breakage, as is seen in FIG. 2.

In assembling the connector, the wire 25 is first crimped into the wire well 20 before the tube is inserted therein. A retaining spring 26 snaps over a shoulder of the wire well to hold the tube in place in the connector. Even if the tube 19 is bent or damaged during assembly, it can be easily removed without damage to the filter 12.

In accordance with another aspect of this invention, a soft plastic insulator 27 has a plurality of protruding plastic cylinders, the cylinder 28 being shown. These protruding cylinders form jackets for the contact section 22 of the tube. This is particularly advantageous in a water-proof type connector.

A defective filter 12 can also be easily replaced by releasing spring 18 and removing elements 15 and 27,

thus gaining access to the filter array. The filter in question is removed from its tube 19 and replaced.

While a particular embodiment has been shown and described, it will be understood that various modifications are within the true spirit and scope of the invention. The appended claims are intended to cover these modifications.

What is claimed is:

1. A filtering connector assembly comprising,

a tubular conductive shell open at its ends and provided with insulation means therewithin,

the insulation means having a longitudinally extending bore therethrough,

an elongated hollow tubular filter removably held within at least one portion of the bore,

an elongated tubular contact element removably mounted within the filter and conductively engaged with the inner wall thereof,

the ends of the contact element being accessible at both ends of the bore within the insulation means for engagement with mating contacts, and

means within the shell for grounding the outer wall of the filter to the shell.

2. A filtering connector assembly according to claim 8 including means for retaining the contact element within the filter.

3. A filtering connector assembly according to claim 8 wherein the insulation means is provided with a plurality of bores therethrough, there being a said filter within each bore and a said contact element within each filter mounted in the said manner, the means within the shell for grounding 'the outer wall of a filter being a substantially conductive planar element extending in a plane normal to that of the filters and in direct contact with the outer wall of each of the filters.

4. A filtering connector assembly according to claim 10 and in which at least one further conductive planar element parallel to and spaced from the first planar element is in direct contact with the outer wall of each of the filters for grounding them to the shell.

5. A filtering connector assembly according to claim 8 wherein the insulator means is comprised of a pair of longitudinally spaced sections, I

one of said sections being removably mounted within the shell and substantially thereacross,

the filter being mounted within the other insulator section with one end protruding therefrom and against the adjacent wall of the first insulator section, 7

whereby removal of the first section permits removal of the filter from the shell.

6. A filtering connector assembly according to claim 12 wherein the insulation means is provided with an outwardly protruding insulating cylindrical member secured thereto in coaxially alignment with the bore therein,

at least one end of the contact element normally extending through the insulation means and within the cylindrical member and terminating at the free end thereof.

7. A filtering connector assembly according to claim 13 wherein the cylindrical member protrudes from the first section.

8. A filtering connector assembly according to claim 8 wherein an exposed end of the insulation means within an exposed end of the insulation means within the shell is provided with a protruding insulating cylinder secured thereto and coaxial with the bore therein,

the contact member extending in said cylinder and substantially terminating at its free end.

9. A filter assembly according to claim 8 in which the elongated contact member is substantially hollow,

an intermediate section thereof being formed with longitudinal slits angularly spaced thereabout,

the material between the slits being bowed outwardly to form spring members for engaging the inner wall of the filter.

Claims (9)

1. A filtering connector assembly comprising, a tubular conductive shell open at its ends and provided with insulation means therewithin, the insulation means having a longitudinally extending bore therethrough, an elongated hollow tubular filter removably held within at least one portion of the bore, an elongated tubular contact element removably mounted within the filter and conductively engaged with the inner wall thereof, the ends of the contact element being accessible at both ends of the bore within the insulation means for engagement with mating contacts, and means within the shell for grounding the outer wall of the filter to the shell.
2. A filtering connector assembly according to claim 8 including means for retaining the contact element within the filter.
3. A filtering connector assembly according to claim 8 wherein the insulation means is provided with a plurality of bores therethrough, there being a said filter within each bore and a said contact element within each filter mounted in the said manner, the means within the shell for grounding the outer wall of a filter being a substantially conductive planar element extending in a plane normal to that of the filters and in direct contact with the outer wall of each of the filters.
4. A filtering connector assembly according to claim 10 and in which at least one further conductive planar element parallel to and spaced from the first planar element is in direct contact with the outer wall of each of the filters for grounding them to the shell.
5. A filtering connector assembly according to claim 8 wherein the insulator means is comprised of a pair of longitudinally spaced sections, one of said sections being removably mounted within the shell and substantially thereacross, the filter being mounted within the other insulator section with one end protruding therefrom and against the adjacent wall of the first insulator section, whereby removal of the first section permits removal of the filter from the shell.
6. A filtering connector assembly according to claim 12 wherein the insulation means is provided with an outwardly protruding insulating cylindrical member secured thereto in coaxially alignment with the bore therein, at least one end of the contact element normally extending through the insulation means and within the cylindrical member and terminating at the free end thereof.
7. A filtering connector assembly according to claim 13 wherein the cylindrical member protrudes from the first section.
8. A filtering connector assembly according to claim 8 wherein an exposed end of the insulation means within an exposed end of the insulation means within the shell is provided with a protruding insulating cylinder secured thereto and coaxial with the bore therein, the contact member extending in said cylinder and substantially terminating at its free end.
9. A filter assembly according to claim 8 in which the elongated contact member is substantially hollow, an intermediate section thereof being formed with longitudinal slits angularly spaced thereabout, the material between the slits being bowed outwardly to form spring members for engaging the inner wall of the filter.
US3743979A 1971-07-15 1971-07-15 Filtered connector with barrel spring contact Expired - Lifetime US3743979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16286471 true 1971-07-15 1971-07-15

Publications (1)

Publication Number Publication Date
US3743979A true US3743979A (en) 1973-07-03

Family

ID=22587438

Family Applications (1)

Application Number Title Priority Date Filing Date
US3743979A Expired - Lifetime US3743979A (en) 1971-07-15 1971-07-15 Filtered connector with barrel spring contact

Country Status (1)

Country Link
US (1) US3743979A (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878486A (en) * 1973-07-11 1975-04-15 Rca Corp High frequency device assembly
FR2283564A1 (en) * 1974-08-31 1976-03-26 Comtronic Bauelemente Connector plugs for electronic devices
FR2309055A1 (en) * 1975-04-21 1976-11-19 Amp Inc electrical connector
FR2309996A1 (en) * 1975-04-28 1976-11-26 Amp Inc Electric connector comprising at least one tubular filter
US4020430A (en) * 1975-04-28 1977-04-26 Amp Incorporated Filtered connector assembly with composite ground plane
FR2412965A1 (en) * 1977-12-23 1979-07-20 Bunker Ramo filter connector intensities HIGH
US4187481A (en) * 1977-12-23 1980-02-05 Bunker Ramo Corporation EMI Filter connector having RF suppression characteristics
US4195272A (en) * 1978-02-06 1980-03-25 Bunker Ramo Corporation Filter connector having contact strain relief means and an improved ground plate structure and method of fabricating same
EP0025367A1 (en) * 1979-08-31 1981-03-18 The Bendix Corporation Filter connector
US4276523A (en) * 1979-08-17 1981-06-30 Bunker Ramo Corporation High density filter connector
US4362350A (en) * 1980-06-09 1982-12-07 International Telephone And Telegraph Corporation Contact retention assembly
US4440463A (en) * 1981-10-26 1984-04-03 The Bendix Corporation Electrical connector having a metallized plastic grounding insert
US4457574A (en) * 1982-02-05 1984-07-03 Automation Industries, Inc. Electromagnetically shielded connector
US4596437A (en) * 1984-06-30 1986-06-24 Smiths Industries Public Limited Company Electrical contact elements, connectors and methods of manufacture
US4707040A (en) * 1981-08-24 1987-11-17 W. L. Gore & Associates, Inc. Connector for coaxially shielded cable
US4836806A (en) * 1983-10-24 1989-06-06 Microdot Inc. Pin connector
USRE33153E (en) * 1983-12-19 1990-01-23 Amp Incorporated Solderless mounted filtered connector
US4908942A (en) * 1984-01-31 1990-03-20 Amp Incorporated Method of making an electrical terminal
US5286224A (en) * 1993-05-10 1994-02-15 Itt Corporation Interchangeable contact connector
EP0601327A2 (en) * 1992-11-09 1994-06-15 Framatome Connectors International High density filtered connector
US5498180A (en) * 1992-10-05 1996-03-12 Amphenol Corporation Diode/filter connector
US5647766A (en) * 1995-05-26 1997-07-15 The Whitaker Corporation Modular connector assembly having removable contacts
US6297942B1 (en) * 1997-09-05 2001-10-02 Morata Manufacturing Co., Ltd Metal terminal and electronic component including same
US8062063B2 (en) 2008-09-30 2011-11-22 Belden Inc. Cable connector having a biasing element
US8469739B2 (en) 2011-02-08 2013-06-25 Belden Inc. Cable connector with biasing element
US9472887B1 (en) * 2015-04-22 2016-10-18 Tyco Electronics Corporation Electrical connector having a ground bracket

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200355A (en) * 1961-11-24 1965-08-10 Itt Electrical connector having rf filter
US3447104A (en) * 1966-06-06 1969-05-27 Itt Electrical connector filter comprising at least one electrically conductive coated dielectric disc and a ferromagnetic disc
US3535676A (en) * 1968-02-12 1970-10-20 Hughes Aircraft Co Electrical connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200355A (en) * 1961-11-24 1965-08-10 Itt Electrical connector having rf filter
US3447104A (en) * 1966-06-06 1969-05-27 Itt Electrical connector filter comprising at least one electrically conductive coated dielectric disc and a ferromagnetic disc
US3535676A (en) * 1968-02-12 1970-10-20 Hughes Aircraft Co Electrical connector
US3539973A (en) * 1968-02-12 1970-11-10 Hughes Aircraft Co Electrical connector

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878486A (en) * 1973-07-11 1975-04-15 Rca Corp High frequency device assembly
FR2283564A1 (en) * 1974-08-31 1976-03-26 Comtronic Bauelemente Connector plugs for electronic devices
FR2309055A1 (en) * 1975-04-21 1976-11-19 Amp Inc electrical connector
FR2309996A1 (en) * 1975-04-28 1976-11-26 Amp Inc Electric connector comprising at least one tubular filter
US4020430A (en) * 1975-04-28 1977-04-26 Amp Incorporated Filtered connector assembly with composite ground plane
FR2412965A1 (en) * 1977-12-23 1979-07-20 Bunker Ramo filter connector intensities HIGH
US4187481A (en) * 1977-12-23 1980-02-05 Bunker Ramo Corporation EMI Filter connector having RF suppression characteristics
US4260966A (en) * 1977-12-23 1981-04-07 Bunker Ramo Corporation High current filter connector with removable contact members
US4195272A (en) * 1978-02-06 1980-03-25 Bunker Ramo Corporation Filter connector having contact strain relief means and an improved ground plate structure and method of fabricating same
US4276523A (en) * 1979-08-17 1981-06-30 Bunker Ramo Corporation High density filter connector
EP0025367A1 (en) * 1979-08-31 1981-03-18 The Bendix Corporation Filter connector
US4362350A (en) * 1980-06-09 1982-12-07 International Telephone And Telegraph Corporation Contact retention assembly
US4707040A (en) * 1981-08-24 1987-11-17 W. L. Gore & Associates, Inc. Connector for coaxially shielded cable
US4440463A (en) * 1981-10-26 1984-04-03 The Bendix Corporation Electrical connector having a metallized plastic grounding insert
US4457574A (en) * 1982-02-05 1984-07-03 Automation Industries, Inc. Electromagnetically shielded connector
US4836806A (en) * 1983-10-24 1989-06-06 Microdot Inc. Pin connector
USRE33153E (en) * 1983-12-19 1990-01-23 Amp Incorporated Solderless mounted filtered connector
US4908942A (en) * 1984-01-31 1990-03-20 Amp Incorporated Method of making an electrical terminal
US4596437A (en) * 1984-06-30 1986-06-24 Smiths Industries Public Limited Company Electrical contact elements, connectors and methods of manufacture
US5498180A (en) * 1992-10-05 1996-03-12 Amphenol Corporation Diode/filter connector
EP0601327A2 (en) * 1992-11-09 1994-06-15 Framatome Connectors International High density filtered connector
EP0601327A3 (en) * 1992-11-09 1997-01-22 Framatome Connectors Int High density filtered connector.
US5286224A (en) * 1993-05-10 1994-02-15 Itt Corporation Interchangeable contact connector
US5647766A (en) * 1995-05-26 1997-07-15 The Whitaker Corporation Modular connector assembly having removable contacts
US6297942B1 (en) * 1997-09-05 2001-10-02 Morata Manufacturing Co., Ltd Metal terminal and electronic component including same
US8062063B2 (en) 2008-09-30 2011-11-22 Belden Inc. Cable connector having a biasing element
US8075337B2 (en) 2008-09-30 2011-12-13 Belden Inc. Cable connector
US8113875B2 (en) 2008-09-30 2012-02-14 Belden Inc. Cable connector
US8506325B2 (en) 2008-09-30 2013-08-13 Belden Inc. Cable connector having a biasing element
US8469739B2 (en) 2011-02-08 2013-06-25 Belden Inc. Cable connector with biasing element
US9472887B1 (en) * 2015-04-22 2016-10-18 Tyco Electronics Corporation Electrical connector having a ground bracket

Similar Documents

Publication Publication Date Title
US3564487A (en) Contact member for electrical connector
US3422394A (en) Electrical connector
US3319216A (en) Connector for flat cables
US3517375A (en) Crimping terminal for coaxial cable
US3573677A (en) Connector with provision for minimizing electromagnetic interference
US3465281A (en) Base for coaxial cable coupling
US3194877A (en) Electrical connector for connecting an electrical lead to the braid of a braid-shielded electrical cable
US3539976A (en) Coaxial connector with controlled characteristic impedance
US3082398A (en) Electrical connectors
US3149893A (en) Auxiliary ground connection for a printed circuit connector
US3297979A (en) Crimpable coaxial connector
US6582252B1 (en) Termination connector assembly with tight angle for shielded cable
US5417588A (en) Coax connector with center pin locking
US5184965A (en) Connector for coaxial cables
US3873172A (en) Flat multi-conductor cable holder
US7311566B2 (en) Electrical connectors
US4889500A (en) Controlled impedance connector assembly
US4275945A (en) Filter connector with compound filter elements
US6273753B1 (en) Twinax coaxial flat cable connector assembly
US4703291A (en) Dielectric filter for use in a microwave integrated circuit
US5062811A (en) Capacitive coupled connector for PCB grounding
US3573719A (en) Connector for multiple-conductor cable
US5906511A (en) Multi-position coaxial cable connector
US4490574A (en) Electrical cable
US4533191A (en) IDC termination having means to adapt to various conductor sizes