US3093435A - Electrical terminal - Google Patents

Electrical terminal Download PDF

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Publication number
US3093435A
US3093435A US95609A US9560961A US3093435A US 3093435 A US3093435 A US 3093435A US 95609 A US95609 A US 95609A US 9560961 A US9560961 A US 9560961A US 3093435 A US3093435 A US 3093435A
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United States
Prior art keywords
stem
terminal
collar
wire
aperture
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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
US95609A
Inventor
Philmore E Johnson
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Superior Electric Co
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Superior Electric Co
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Filing date
Publication date
Application filed by Superior Electric Co filed Critical Superior Electric Co
Priority to US95609A priority Critical patent/US3093435A/en
Application granted granted Critical
Publication of US3093435A publication Critical patent/US3093435A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49796—Coacting pieces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49945—Assembling or joining by driven force fit

Definitions

  • the electrical terminal of the present invention has particular utility when secured in a mounting panel, such as formed of an insulated material with the electrical conducting wire secured on one side of the panel, normally the inner side.
  • a connector extends through the panel and permits detachable connection to be secured thereto and thus be electrically connected to the wire.
  • An object of the present invention is to provide an electrical terminal which may be both mechanically secured and electrically connected to an end of an electrical conducting wire.
  • Another object of the present invention is to provide a terminal which requires only a simple operation for securing the wire and terminal, needing no special or expensive tools or solder.
  • a further object of the present invention is to provide a terminal that may be easily and economically fabricated in one piece priorto it being secured to the wire.
  • a solderless terminal composed of a body which may be secured, as by being pressed or molded, into an insulated panel.
  • the terminal has a body having a head that preferably is accessible from the exterior of the panel and secured to the other side of the body is a stem that projects from the inner side of the panel.
  • a through aperture or cross hole that receives the end of the electrical conducting wire to which it is secured is formed partially in the body and partially in the stem.
  • a collar is integrally connected to the stem but is provided with an axial aperture which reduces the uniting cross-sectional area of the connection between the stem and collar to a relatively small area.
  • the size of the aperture formed in the collar is limited to approximately the size of the stem so that a press fit occurs when the collar is forced onto the stem. Moreover, the fracturable area provides for rough areas of friction on both the collar and the stem which also aids in. securely clamping the wire to the terminal.
  • FIGURE 1 is an elevation partly in section of the electrical terminal of the present invention.
  • FIG. 2 is an end view looking in the direction of the arrows 22.
  • FIG. 3 is an axial sect-ion of the terminal mounted in an insulated panel.
  • FIG. 4 is an axial section of the terminal similar to "ice an automatic screw machine to shape the terminal from a piece of free machining brass.
  • the terminal includes a head 11, a body 12, a stem 13 and a collar 14. Each of these portions, in the specific embodiment of the invention herein described, has a cylindrical periphery and with their axes being aligned. As shown, the head 11 has a larger diameter than the body 12 which in turn has a larger diameter than the stem 13 while the diameter of the collar 14 is greater than the stem 13.
  • An axial bore 15- extends through the head into the body and is preferably threaded to provide for detachable securement of another electrical connector, such as a wire and screw, to the terminal.
  • the exterior 16 of the body is knurled or otherwise roughened and at the junction of the stem and body there is formed a transverse aperture or cross hole 17.
  • the cross hole has at least a portion thereof formed in the stem while the other portion is formed in the body, the latter being indicated by the reference numeral 18.
  • the axis of the cross hole 1 7 is on the junction of the stem and body.
  • T he collar 14 is. formed with an axial aperture 19 having a diameter substantially the same or slightly less than the diameter of the stem. For example, if the stem diameter limits are .136 and .138 inch the aperture 19 is drilled with a drill having a diameter of .136 inch. It will be noted that the aperture 19 extends considerably into the collar portion but leaves a cross-sectional uniting area, indicated by the reference numeral 26 that forms the connection between the stem and the collar, thus making the terminal one piece as formed.
  • the terminal 10 is preferably mounted in an insulating panel 21, such as shown in FIGS. 3 and 4, by either mold ing the terminal therein or by force fitting and/ or staking or spinning the terminal into an aperture 22 formed in the panel until the head 11 abuts the outer surface 23 of the panel.
  • the length of the body 12 is sufficient to extend beyond the inner side 24 of the panel.
  • the wire end 26 is inserted into the cross aperture 17 until it substantially engages the body throughout the length of the portion 18 of the cross hole 17.
  • A. compressive force is then exerted axially on the collar and this force is sufiicient to fracture or rupture the unit-ing cross-sectional area 20 and force the collar onto the stern until the collar abuts the wire 25.
  • the collar by abutting the wire 25 also forces the wire against the cross hole portion 18 and hence the wire is clamped between the collar 14 and the body.
  • the wire is prevented from being sheared off when clamped in place by the collar.
  • the terminal may be formed to have an integral stud projecting out therefrom which may be threaded or otherwise formed to have an electrical connector secured thereto in any well-known manner.
  • An electrical terminal comprising a head, a body connected to the head, a stern secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a wire inserted in the aperture to the terminal.
  • a one-piece electrical terminal comprising a head, a body connected to the head and being of smaller diameter than the head, a stem secured to the body and being of smaller diameter than the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem and being of a larger outer diameter than the stern and having an axial aperture formed therein having a diameter substantially the same as the diameter of the stem, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a wire inserted in the aperture to the terminal.
  • An electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being of smaller diameter than the body and being formed to provide at least a portion of a transverse aperture and a collar secured to the stem, said collar being larger than the stem and being pressed onto said stem to form a press 4 fit with the stem to clamp 21 wire inserted in the aperture between the body and the collar.
  • a one-piece electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem, said collar being fracturable from its connection to the stem to the pressed onto said stem to form a press fit with the stem to clamp a Wire inserted in the aperture to the terminal to provide for electrical connection between said wire and the terminal and additional means formed on said terminal for providing for another electrical connection to the terminal.
  • An electrical terminal comprising a body, a stem secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stern, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a Wire inserted in the aperture to the terminal.
  • An electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being formed to provide at least a portion of a transverse aperture, 3. wire positioned in said aperture, and a collar, said collar being press fitted onto said stem to clamp the wire inserted in the aperture to the terminal.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Description

June 11, 1963 4' J1 J9 14 T Z 13 30 2 P. E. JOHNSON ELECTRICAL TERMINAL Filed March 14, 1961 15 14 Z- 2a 24 Z I 1 12 zz 1 K I n 21 1 I: I l I 1.! 2 23 INVENTOR. P/zlmore F. 1/0/0750/2/ flTTUE/VEY United States Patent 6 3,093,435 ELECTRICAL TERMINAL Philmore E. Johnson, Bristol, Conn, assiguor to The Superior Electric Company, Bristol, Conn, a corporation of Connecticut Filed Mar. 14, 1961, Ser. No. 95,609 6 Claims. (Cl. 339-276) The present invention relates to an electrical terminal that is secured to an end of an electrical conducting wire to facilitate fastening of other electrical connectors to the wire.
The electrical terminal of the present invention has particular utility when secured in a mounting panel, such as formed of an insulated material with the electrical conducting wire secured on one side of the panel, normally the inner side. A connector extends through the panel and permits detachable connection to be secured thereto and thus be electrically connected to the wire.
An object of the present invention is to provide an electrical terminal which may be both mechanically secured and electrically connected to an end of an electrical conducting wire.
Another object of the present invention is to provide a terminal which requires only a simple operation for securing the wire and terminal, needing no special or expensive tools or solder.
A further object of the present invention is to provide a terminal that may be easily and economically fabricated in one piece priorto it being secured to the wire.
In carrying out the present invention, there is provided a solderless terminal composed of a body which may be secured, as by being pressed or molded, into an insulated panel. The terminal has a body having a head that preferably is accessible from the exterior of the panel and secured to the other side of the body is a stem that projects from the inner side of the panel. A through aperture or cross hole that receives the end of the electrical conducting wire to which it is secured is formed partially in the body and partially in the stem. A collar is integrally connected to the stem but is provided with an axial aperture which reduces the uniting cross-sectional area of the connection between the stem and collar to a relatively small area. Thus after the end of the wire is positioned in the cross hole and a compressive axial force is exerted on the collar, the uniting area between the collar and the stem is fractured and the collar is forced on the stem towards the body to thereby clamp the wire between the collar and the body.
The size of the aperture formed in the collar is limited to approximately the size of the stem so that a press fit occurs when the collar is forced onto the stem. Moreover, the fracturable area provides for rough areas of friction on both the collar and the stem which also aids in. securely clamping the wire to the terminal.
Other features and advantages will hereinafter appear.
In the drawing:
FIGURE 1 is an elevation partly in section of the electrical terminal of the present invention.
FIG. 2 is an end view looking in the direction of the arrows 22.
FIG. 3 is an axial sect-ion of the terminal mounted in an insulated panel.
FIG. 4 is an axial section of the terminal similar to "ice an automatic screw machine to shape the terminal from a piece of free machining brass. The terminal includes a head 11, a body 12, a stem 13 and a collar 14. Each of these portions, in the specific embodiment of the invention herein described, has a cylindrical periphery and with their axes being aligned. As shown, the head 11 has a larger diameter than the body 12 which in turn has a larger diameter than the stem 13 while the diameter of the collar 14 is greater than the stem 13. An axial bore 15- extends through the head into the body and is preferably threaded to provide for detachable securement of another electrical connector, such as a wire and screw, to the terminal.
As shown, the exterior 16 of the body is knurled or otherwise roughened and at the junction of the stem and body there is formed a transverse aperture or cross hole 17. As shown particularly in FIG. 3, the cross hole has at least a portion thereof formed in the stem while the other portion is formed in the body, the latter being indicated by the reference numeral 18. Specifically, in the embodiment shown, the axis of the cross hole 1 7 is on the junction of the stem and body.
T he collar 14 is. formed with an axial aperture 19 having a diameter substantially the same or slightly less than the diameter of the stem. For example, if the stem diameter limits are .136 and .138 inch the aperture 19 is drilled with a drill having a diameter of .136 inch. It will be noted that the aperture 19 extends considerably into the collar portion but leaves a cross-sectional uniting area, indicated by the reference numeral 26 that forms the connection between the stem and the collar, thus making the terminal one piece as formed.
The terminal 10 is preferably mounted in an insulating panel 21, such as shown in FIGS. 3 and 4, by either mold ing the terminal therein or by force fitting and/ or staking or spinning the terminal into an aperture 22 formed in the panel until the head 11 abuts the outer surface 23 of the panel. The length of the body 12 is sufficient to extend beyond the inner side 24 of the panel.
In order to secure the end of an electrical conducting wire 25 to the terminal, the wire end 26 is inserted into the cross aperture 17 until it substantially engages the body throughout the length of the portion 18 of the cross hole 17. A. compressive force is then exerted axially on the collar and this force is sufiicient to fracture or rupture the unit-ing cross-sectional area 20 and force the collar onto the stern until the collar abuts the wire 25. Naturally, the collar by abutting the wire 25 also forces the wire against the cross hole portion 18 and hence the wire is clamped between the collar 14 and the body. Moreover, by having the cross hole partially formed in the body, the wire is prevented from being sheared off when clamped in place by the collar.
Because of the relative size between the axial hole 19 and the diameter of the stern 13 the collar thus is press fitted onto the stem and hence is held by such a fit against movement. Moreover, it will be appreciated that the sides of cross-section 20 that are fractured are relatively rough and aid in maintaining, by their engagement with the stem and the collar, the securement of the collar on the stem.
After the wire has been secured to the terminal it will be appreciated that a bolt or other connector may be easily threaded into the aperture 15 to make an electrical connection to the wire 25 in view of the material forming the terminal 10 being electrically conductive. Moreover, instead of employing the aperture 15 as a connecting means, the terminal may be formed to have an integral stud projecting out therefrom which may be threaded or otherwise formed to have an electrical connector secured thereto in any well-known manner.
-It will accordingly be appreciated that there has been disclosed an electrical terminal for a wire which is formed in one piece. The terminal, by a simple pressing operation, provides for an extremely rigid and solid connection to the wire end, a. connection which is both mechanically strong and electrically conductive.
Variations and modifications may be made Within the scope of the claims and portions of the improvements may be used without others.
I claim:
1. An electrical terminal comprising a head, a body connected to the head, a stern secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a wire inserted in the aperture to the terminal.
2. A one-piece electrical terminal comprising a head, a body connected to the head and being of smaller diameter than the head, a stem secured to the body and being of smaller diameter than the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem and being of a larger outer diameter than the stern and having an axial aperture formed therein having a diameter substantially the same as the diameter of the stem, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a wire inserted in the aperture to the terminal.
3. An electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being of smaller diameter than the body and being formed to provide at least a portion of a transverse aperture and a collar secured to the stem, said collar being larger than the stem and being pressed onto said stem to form a press 4 fit with the stem to clamp 21 wire inserted in the aperture between the body and the collar.
4. A one-piece electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stem, said collar being fracturable from its connection to the stem to the pressed onto said stem to form a press fit with the stem to clamp a Wire inserted in the aperture to the terminal to provide for electrical connection between said wire and the terminal and additional means formed on said terminal for providing for another electrical connection to the terminal.
5. An electrical terminal comprising a body, a stem secured to the body and being formed to provide at least a portion of a transverse aperture and a collar integrally secured to the stern, said collar being fracturable from its connection to the stem to be pressed onto said stem to form a press fit with the stem to clamp a Wire inserted in the aperture to the terminal.
6. An electrical terminal comprising a head, a body connected to the head, a stem secured to the body and being formed to provide at least a portion of a transverse aperture, 3. wire positioned in said aperture, and a collar, said collar being press fitted onto said stem to clamp the wire inserted in the aperture to the terminal.
References Cited in the file of this patent UNITED STATES PATENTS 2,520,259 Pummill Aug. 29-, 1950 FOREIGN PATENTS 858,987 Great Britain Jan. 18, 1961

Claims (1)

  1. 4. A ONE-PIECE ELECTRICAL TERMINAL COMPRISING A HEAD, A BODY CONNECTED TO THE HEAD, A STEM SECURED TO THE BODY AND BEING FORMED TO PROVIDE AT LEAST A PORTION OF A TRANSVERSE APERTURE AND A COLLAR INTEGRALLY SECURED TO THE STEM, SAID COLLAR BEING FRACTURABLE FROM ITS CONNECTION TO THE STEM TO BE PRESSED ONTO SAID STEM TO FORM A PRESS FIT WITH THE STEM TO CLAMP A WIRE INSERTED IN THE APERTURE TO THE TERMINAL TO PROVIDE FOR ELECTRICAL CONNECTION BETWEEN SAID WIRE AND THE TERMINAL AND ADDITIONAL MEANS FORMED ON SAID TERMINAL FOR PROVIDING FOR ANOTHER ELECTRICAL CONNECTION TO THE TERMINAL.
US95609A 1961-03-14 1961-03-14 Electrical terminal Expired - Lifetime US3093435A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278890A (en) * 1964-04-13 1966-10-11 Pylon Company Inc Female socket connector
US3323094A (en) * 1964-07-29 1967-05-30 Markite Corp Potentiometer terminal
US3771112A (en) * 1972-04-07 1973-11-06 J Thompson Cable splice clamping and bonding assembly
US4349951A (en) * 1980-11-06 1982-09-21 Wefler Michael W Method of making a key ring bob
US4653155A (en) * 1984-09-07 1987-03-31 Nifco, Inc. Wire bundling harness
US4842530A (en) * 1988-01-28 1989-06-27 The Dexter Corporation Electrical floating bond assembly
US5954547A (en) * 1997-10-28 1999-09-21 Electric Motion Company, Inc. Low cost strain relief device for clamp assembly
US6202261B1 (en) * 1999-06-14 2001-03-20 Polytech Netting, L.P. Swivelling anchor for storage net and method of installing same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520259A (en) * 1943-12-11 1950-08-29 Edwin W Pummill Self-locking nut and washer
GB858987A (en) * 1958-02-10 1961-01-18 Hermes Miquelis Improvements relating to terminal connections for electric or electronic components in hermetrically sealed containers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520259A (en) * 1943-12-11 1950-08-29 Edwin W Pummill Self-locking nut and washer
GB858987A (en) * 1958-02-10 1961-01-18 Hermes Miquelis Improvements relating to terminal connections for electric or electronic components in hermetrically sealed containers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278890A (en) * 1964-04-13 1966-10-11 Pylon Company Inc Female socket connector
US3323094A (en) * 1964-07-29 1967-05-30 Markite Corp Potentiometer terminal
US3771112A (en) * 1972-04-07 1973-11-06 J Thompson Cable splice clamping and bonding assembly
US4349951A (en) * 1980-11-06 1982-09-21 Wefler Michael W Method of making a key ring bob
US4653155A (en) * 1984-09-07 1987-03-31 Nifco, Inc. Wire bundling harness
US4842530A (en) * 1988-01-28 1989-06-27 The Dexter Corporation Electrical floating bond assembly
US5954547A (en) * 1997-10-28 1999-09-21 Electric Motion Company, Inc. Low cost strain relief device for clamp assembly
US6202261B1 (en) * 1999-06-14 2001-03-20 Polytech Netting, L.P. Swivelling anchor for storage net and method of installing same

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