US3622100A - Bobbin with lead strain-relieving device - Google Patents

Bobbin with lead strain-relieving device Download PDF

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Publication number
US3622100A
US3622100A US761157A US3622100DA US3622100A US 3622100 A US3622100 A US 3622100A US 761157 A US761157 A US 761157A US 3622100D A US3622100D A US 3622100DA US 3622100 A US3622100 A US 3622100A
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Prior art keywords
coil
wire
flange
bobbin
slot
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Expired - Lifetime
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US761157A
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Thomas J Wright
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Bel Tronics Corp
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Bel Tronics Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • 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
    • Y10T24/3916—One-piece
    • Y10T24/3918—Wedge slot

Definitions

  • the invention relates to a bobbin having means for securing the wire leading from the bobbin to prevent any strain being placed on the coil wound on the bobbin,
  • BOBBIN WITI-I LEAD STRAIN-RELIEVING DEVICE As is known, in the production of electrical coils the wire forming the coil is wound around a core or bobbin with the ends of the wire extending from the coil for subsequent connection to the associated electrical connections or terminals. Frequently, when the ends of the wire are handled, or manipulated, in connecting to the associated electrical terminals, the wires are pulled causing a strain to be placed on the coil.
  • a bobbin having means for preventing or minimizing any strain on the coil as the coil wire ends are handled or connected to the associated circuitry.
  • FIG. 1 shows a plan view of the bobbin in accordance with the invention
  • FIG. 2 shows a front view of the bobbin of FIG. 1;
  • FIG. 3 shows a side view of the bobbin of FIG. 1;
  • FIG. 4 shows a partial enlarged view of the bobbin of FIGS. 1-3, indicating by the dotted lines the positioning of the wire in the bobbin to prevent strain from being placed on the coil;
  • FIG. 5 shows a modification of the bobbin of FIGS. 1-4.
  • the numeral 11 designates a bobbin of an electrical insulating material such as, for example, nylon, and having a pair of spaced projecting flanges 13 and 14 straddling an essentially hollow core or sleeve 15 upon which a wire is to be wound for forming an electrical coil or winding.
  • the flanges 13 and 14 include extending projections or ears 17 and 18, respectively; and, each ear is bifurcated or divided into two portions.
  • ear 18 is divided into two portions 19 and 21, separated by a slot 23 extending from the edge of the ear in toward the edge of the flange 14.
  • the portions 19 and 21 include slots 25 and 27, respectively, extending from the top and bottom of the car 18 inwardly through a slightly restricted throat to form a pocket or recess for receiving a wire as will be explained hereinafter.
  • one end A of the wire 30 forming the coil 32 on bobbin 11 extends from the bobbin 11 for connection to the associated electronic circuitry.
  • Wire 30 is arranged to lead from the coil 32 through the pocket 27 outwardly to the exterior side of ear 19 on flange 14, back through the slot 23 to the interior side of car 21, and outwardly through pocket 25 to the exterior side of ear 21.
  • the end 30A of wire 30 winds in serpentine fashion through the pocket 27, slot 23 and pocket 25 to retain or restrain wire 30.
  • the other end of the wire 30, not shown, is retained or restrained in flange l7 similarly to the manner in which end 30A of wire 30 is retained or restrained in flange 18.
  • FIG. 5 A modification of the inventive bobbin is shown in FIG. 5 wherein a bobbin 33 includes two spaced flanges 35 and 37 straddling a core 39.
  • the flanges 35 and 37 are formed essentially in a closed U or shield shape with outstanding cars 41 and 43 being formed on the straight portion of the shield
  • Each of the cars 41 and 43 has two pockets and a slot similar in construction to the ears l7 and 18 of the bobbin of FIGS. 14.
  • slot 23A and the pockets 25A and 27A similar respectively to slot 23 and pockets 25 and 27 in ear 18.
  • the ears 41 and 43 of the bobbin of FIG. 5 are similar in function and mode of utilization as are the ears of bobbin 11 shown in FIGS. 1-4.
  • a bobbin for supporting a wire coil comprising a coil-supporting core having a flange carried on the end thereof,
  • said flange having an ear portion extending outwardly therefrom
  • said ear portion having a plurality of apertures for securing a coil wire passed therethrough in a serpentine fashion to prevent tensile forces applied to said wire from being transmitted to the coil,
  • said plurality of apertures of said ear portion comprise a center slot bifurcating the ear portion
  • each bifurcated ear portion directed transverse to said center slot.
  • the apparatus of claim 1 including a coil of wire supported on said core and having each of oppositely extending ends thereof passing through said plurality of apertures on one of said ear portions in a serpentine fashion to prevent transmittal of tensile forces to said coil.
  • the apparatus of claim 1 including a coil of wire supported on said core and having one end thereof passing through an inwardly extending slot over a bifurcated ear portion, through said center slot, over the opposite bifurcated ear portion and through the opposite inwardly extending slot securing the coil end from transmitting tensile forces to the coil.
  • a bobbin as in claim 1 wherein said flange is formed in the shape of a shield, and said ear portion extends outwardly from the flat edge of the shield.
  • a bobbin for supporting a wire coil having a coil-supporting core with a flange carried on the end thereof and a strain-relieving means carried by said flange for preventing tensile forces applied to the wire from being transmitted to the coil, the improvement wherein said strain-relieving means comprises a center slot defined in said flange extending inwardly toward said coil-supporting core, and
  • a bobbin as in claim 6 formed of a plastic material wherein said core is elongated and said flanges are circular.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Abstract

The invention relates to a bobbin having means for securing the wire leading from the bobbin to prevent any strain being placed on the coil wound on the bobbin.

Description

1 v United States 'atent inventor Thomas J. Wright 1tasca,lll.
Appl, No. 761,157
Filed Sept. 20, 1968 Patented Nov. 23, 1971 Assignee BeI-Tronics Corporation Addison, Ill.
BOBBIN WITH LEAD STRAIN-RELIEVING DEVICE 9 Claims, 5 Drawing Figs.
US. Cl 242/1252, 24/130, 242/851 Int. Cl Bh /28, B65h 75/36 Field 01 Search 242/1252,
125.1,125.3,125,118.4,118.7,ll8.8,118,100, 85.1,77;24/129,130,129.1,129B
References Cited UNITED STATES PATENTS 9/1907 Jodrey 242/1252 6/1913 Tobin 24/130 UX 7/1925 Ovellet.... 24/130 6/1940 Lyons 242/851 X 2/1912 Schmucker 242/851 12/1930 Griswold 242/ 7/1954 Criswell... 242/851 X 5/1962 Walker 242/1252 X Primary Examiner-George F. Mautz AnorneyPetherbridge, ONeill & Lindgren ABSTRACT: The invention relates to a bobbin having means for securing the wire leading from the bobbin to prevent any strain being placed on the coil wound on the bobbin,
BOBBIN WITI-I LEAD STRAIN-RELIEVING DEVICE As is known, in the production of electrical coils the wire forming the coil is wound around a core or bobbin with the ends of the wire extending from the coil for subsequent connection to the associated electrical connections or terminals. Frequently, when the ends of the wire are handled, or manipulated, in connecting to the associated electrical terminals, the wires are pulled causing a strain to be placed on the coil.
Accordingly, it is a principal object of the invention to provide a bobbin having means for preventing or minimizing any strain on the coil as the coil wire ends are handled or connected to the associated circuitry.
The invention will be more fully understood from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings:
FIG. 1 shows a plan view of the bobbin in accordance with the invention;
FIG. 2 shows a front view of the bobbin of FIG. 1;
FIG. 3 shows a side view of the bobbin of FIG. 1;
FIG. 4 shows a partial enlarged view of the bobbin of FIGS. 1-3, indicating by the dotted lines the positioning of the wire in the bobbin to prevent strain from being placed on the coil; and,
FIG. 5 shows a modification of the bobbin of FIGS. 1-4.
Referring now to the drawings, and first, particularly to FIGS. 1-4, the numeral 11 designates a bobbin of an electrical insulating material such as, for example, nylon, and having a pair of spaced projecting flanges 13 and 14 straddling an essentially hollow core or sleeve 15 upon which a wire is to be wound for forming an electrical coil or winding.
The flanges 13 and 14 include extending projections or ears 17 and 18, respectively; and, each ear is bifurcated or divided into two portions. For example, ear 18 is divided into two portions 19 and 21, separated by a slot 23 extending from the edge of the ear in toward the edge of the flange 14. In addition, the portions 19 and 21 include slots 25 and 27, respectively, extending from the top and bottom of the car 18 inwardly through a slightly restricted throat to form a pocket or recess for receiving a wire as will be explained hereinafter.
Referring now to FIG. 4, one end A of the wire 30 forming the coil 32 on bobbin 11 extends from the bobbin 11 for connection to the associated electronic circuitry. Wire 30 is arranged to lead from the coil 32 through the pocket 27 outwardly to the exterior side of ear 19 on flange 14, back through the slot 23 to the interior side of car 21, and outwardly through pocket 25 to the exterior side of ear 21. Thus, the end 30A of wire 30 winds in serpentine fashion through the pocket 27, slot 23 and pocket 25 to retain or restrain wire 30.
Accordingly, tensile forces applied to the wire 30 will be absorbed or reacted by the ears 19 and 21 and will not be transmitted to the portion of the wire forming the coil 32.
The other end of the wire 30, not shown, is retained or restrained in flange l7 similarly to the manner in which end 30A of wire 30 is retained or restrained in flange 18.
A modification of the inventive bobbin is shown in FIG. 5 wherein a bobbin 33 includes two spaced flanges 35 and 37 straddling a core 39. The flanges 35 and 37 are formed essentially in a closed U or shield shape with outstanding cars 41 and 43 being formed on the straight portion of the shield Each of the cars 41 and 43 has two pockets and a slot similar in construction to the ears l7 and 18 of the bobbin of FIGS. 14.
Note slot 23A and the pockets 25A and 27A similar respectively to slot 23 and pockets 25 and 27 in ear 18.
The ears 41 and 43 of the bobbin of FIG. 5 are similar in function and mode of utilization as are the ears of bobbin 11 shown in FIGS. 1-4.
While the invention has been particularly shown and described with reference to a preferred embodiment thereof, it will be understood by those skilled in the art that changes in form and details may be made therein without departing from the spirit and scope of the invention.
1 claim:
1. A bobbin for supporting a wire coil comprising a coil-supporting core having a flange carried on the end thereof,
said flange having an ear portion extending outwardly therefrom,
said ear portion having a plurality of apertures for securing a coil wire passed therethrough in a serpentine fashion to prevent tensile forces applied to said wire from being transmitted to the coil,
wherein said plurality of apertures of said ear portion comprise a center slot bifurcating the ear portion, and
an inwardly extending slot formed in each bifurcated ear portion directed transverse to said center slot.
2. The apparatus of claim 1 including a coil of wire supported on said core and having each of oppositely extending ends thereof passing through said plurality of apertures on one of said ear portions in a serpentine fashion to prevent transmittal of tensile forces to said coil.
3. The apparatus of claim 1 including a coil of wire supported on said core and having one end thereof passing through an inwardly extending slot over a bifurcated ear portion, through said center slot, over the opposite bifurcated ear portion and through the opposite inwardly extending slot securing the coil end from transmitting tensile forces to the coil.
4. The apparatus of claim 3 wherein the wire-engaging portion of said inwardly extending slots terminates in a recess portion having a width greater than the slot channel width.
5. A bobbin as in claim 1 wherein said flange is formed in the shape of a shield, and said ear portion extends outwardly from the flat edge of the shield.
6. In a bobbin for supporting a wire coil having a coil-supporting core with a flange carried on the end thereof and a strain-relieving means carried by said flange for preventing tensile forces applied to the wire from being transmitted to the coil, the improvement wherein said strain-relieving means comprises a center slot defined in said flange extending inwardly toward said coil-supporting core, and
a pair of slots formed in said flange each extending parallel to said coil-supporting core and directed inwardly toward said center slot for securing a coil wire passed therethrough preventing tensile forces applied to the wire from being transmitted to the coil.
7. The apparatus of claim 6 wherein the pair of slots formed in said flange each extending parallel to said coil-supporting core and directed inwardly toward said center slot terminate in a recess portion having a width greater than the slot channel width.
8. A bobbin as in claim 6 formed of a plastic material wherein said core is elongated and said flanges are circular.
9. The apparatus of claim 6 wherein a flange is carried by each end of said coil-supporting core.

Claims (9)

1. A bobbin for supporting a wire coil comprising a coilsupporting core having a flange carried on the end thereof, said flange having an ear portion extending outwardly therefrom, said ear portion having a plurality of apertures for securing a coil wire passed therethrough in a serpentine fashion to prevent tensile forces applied to said wire from being transmitted to the coil, wherein said plurality of apertures of said ear portion comprise a center slot bifurcating the ear portion, and an inwardly extending slot formed in each bifurcated ear portion directed transverse to said center slot.
2. The apparatus of claim 1 including a coil of wire supported on said core and having each of oppositely extending ends thereof passing through said plurality of apertures on one of said ear portions in a serpentine fashion to prevent transmittal of tensile forces to said coil.
3. The apparatus of claim 1 including a coil of wire supported on said core and having one end thereof passing through an inwardly extending slot over a bifurcated ear portion, through said center slot, over the opposite bifurcated ear portion and through the opposite inwardly extending slot securing the coil end from transmitting tensile forces to the coil.
4. The apparatus of claim 3 wherein the wire-engaging portion of said inwardly extending slots terminates in a recess portion having a width greater than the slot channel width.
5. A bobbin as in claim 1 wherein said flange is formed in the shape of a shield, and said ear portion extends outwardly from the flat edge of the shield.
6. In a bobbin for supporting a wire coil having a coil-supporting core with a flange carried on the end thereof and a strain-relieving means carried by said flange for preventing tensile forces applied to the wire from being transmitted to the coil, the improvement wherein said strain-relieving means comprises a center slot defined in said flange extending inwardly toward said coil-supporting core, and a pair of slots formed in said flange each extending parallel to said coil-supporting core and directed inwardly toward said center slot for securing a coil wire passed therethrough preventing tensile forces applied to the wire from being transmitted to the coil.
7. The apparatus of claim 6 wherein the pair of slots formed in said flange each extending parallel to said coil-supporting core and directed inwardly toward said center slot terminate in a recess portion having a width greater than the slot channel width.
8. A bobbin as in claim 6 formed of a plastic material wherein said core is elongated and said flanges are circular.
9. The apparatus of claim 6 wherein a flange is carried by each end of said coil-supporting core.
US761157A 1968-09-20 1968-09-20 Bobbin with lead strain-relieving device Expired - Lifetime US3622100A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146860A (en) * 1977-07-25 1979-03-27 Universal Manufacturing Corporation Electrical coil assembly
US4177961A (en) * 1978-06-23 1979-12-11 Excel Plastic Products, Inc. Extension cord holder
US4385581A (en) * 1980-05-05 1983-05-31 Patterson Howard F Device for tying to a point of support
US4554406A (en) * 1982-05-06 1985-11-19 Lectron Products, Inc. Electric wiring terminal and method of making same
US5886451A (en) * 1997-10-30 1999-03-23 Ford Motor Company Wire routing design for a rotor of an electrical machine
US6047918A (en) * 1999-01-27 2000-04-11 Japan Automatic Machine Co., Ltd. Wire spool
US6249201B1 (en) * 1999-11-23 2001-06-19 Darfon Electronics Corp. Fly back transformer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US865907A (en) * 1905-10-26 1907-09-10 Gen Electric Coil for electrical purposes.
US1016783A (en) * 1910-11-30 1912-02-06 Edwin B Schmucker Fish-line holder.
US1065190A (en) * 1912-11-16 1913-06-17 Bryant Electric Co Strain-relief device.
US1547677A (en) * 1924-08-18 1925-07-28 Ouellet Arthur Cord-gripping device
US1784064A (en) * 1928-07-31 1930-12-09 George M Griswold Chalk-line reel
US2204939A (en) * 1939-07-25 1940-06-18 Carleton R Lyons Combination electrical cord reel and outlet plug
US2683937A (en) * 1952-07-15 1954-07-20 Lewis B Kingsley Plumb bob adjuster
US3033487A (en) * 1961-04-12 1962-05-08 Uel T Walker Fishhook and leader holder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US865907A (en) * 1905-10-26 1907-09-10 Gen Electric Coil for electrical purposes.
US1016783A (en) * 1910-11-30 1912-02-06 Edwin B Schmucker Fish-line holder.
US1065190A (en) * 1912-11-16 1913-06-17 Bryant Electric Co Strain-relief device.
US1547677A (en) * 1924-08-18 1925-07-28 Ouellet Arthur Cord-gripping device
US1784064A (en) * 1928-07-31 1930-12-09 George M Griswold Chalk-line reel
US2204939A (en) * 1939-07-25 1940-06-18 Carleton R Lyons Combination electrical cord reel and outlet plug
US2683937A (en) * 1952-07-15 1954-07-20 Lewis B Kingsley Plumb bob adjuster
US3033487A (en) * 1961-04-12 1962-05-08 Uel T Walker Fishhook and leader holder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146860A (en) * 1977-07-25 1979-03-27 Universal Manufacturing Corporation Electrical coil assembly
US4177961A (en) * 1978-06-23 1979-12-11 Excel Plastic Products, Inc. Extension cord holder
US4385581A (en) * 1980-05-05 1983-05-31 Patterson Howard F Device for tying to a point of support
US4554406A (en) * 1982-05-06 1985-11-19 Lectron Products, Inc. Electric wiring terminal and method of making same
US5886451A (en) * 1997-10-30 1999-03-23 Ford Motor Company Wire routing design for a rotor of an electrical machine
US6047918A (en) * 1999-01-27 2000-04-11 Japan Automatic Machine Co., Ltd. Wire spool
US6249201B1 (en) * 1999-11-23 2001-06-19 Darfon Electronics Corp. Fly back transformer

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