EP0038883A1 - Bobine revêtue, procédé et dispositif pour sa fabrication - Google Patents

Bobine revêtue, procédé et dispositif pour sa fabrication Download PDF

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Publication number
EP0038883A1
EP0038883A1 EP80301335A EP80301335A EP0038883A1 EP 0038883 A1 EP0038883 A1 EP 0038883A1 EP 80301335 A EP80301335 A EP 80301335A EP 80301335 A EP80301335 A EP 80301335A EP 0038883 A1 EP0038883 A1 EP 0038883A1
Authority
EP
European Patent Office
Prior art keywords
loop
insulating tube
wire
shaped insulating
shaped
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.)
Withdrawn
Application number
EP80301335A
Other languages
German (de)
English (en)
Inventor
Toshiro Hatanaka
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.)
Takachiho Electric Co Ltd
Original Assignee
Takachiho Electric Co Ltd
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
Application filed by Takachiho Electric Co Ltd filed Critical Takachiho Electric Co Ltd
Priority to EP80301335A priority Critical patent/EP0038883A1/fr
Publication of EP0038883A1 publication Critical patent/EP0038883A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form

Definitions

  • This invention relates to a covered coil for use in electrical equipments or telecommunication equipments, and particularly relates to a covered coil which is formed by winding an insulated wire ( hereinafter simply referred to as wire ) through a loop-shaped insulating tube, so that an insulating distance and space distance therearound can readily be selected as required, and can safely be isolated from unfavorable environments, and relates to a process for manufacturing the covered coil and a device for manufacturing the covered coil.
  • wire insulated wire
  • the conventional covered coil for example, a degaussing coil for use in a color television image receiver is prepared by a process in which an insulating tube is cut longitudinally to be opened in the circumferential direction so as to fit therein a coil formed by winding wire to cover, and after the coil is covered with the cut insulating tube the cut is sealed, or a process in which a coil formed by winding wire is wrapped with an insulating tape.
  • the conventional covered coil is very difficult to be manufactured due to the complicated processes therefor as mentioned above, which results in a high manufacturing cost.
  • the insulating tube used for insulation thereof is uniform in thickness, the insulating distance or the space distance therearound can readily be selected as required, an insulating tube free of defects such as pinholes can be obtained for use, and the coil therein can be completely isolated from unfavorable environments.
  • the present invention provides a covered coil comprising a loop-shaped insulating tube having a given length and diameter, a coil formed by winding an insulated wire through the loop-shaped insulating tube by a given number of turns, an inlet and outlet open tips of the loop-shaped insulating tube, and an inlet and outlet terminal sections of the insulated wire.
  • the present invention also provides a covered coil comprising a loop-shaped insulating tube having a given length and diameter, a coil formed by winding an insulated wire through a loop-shaped insulating tube by a given number of turns, an inlet and outlet open tips of the loop-shaped insulating tube, and an inlet and outlet terminal sections of the insulated wire, the loop-shaped insulating tube being a loop-shaped composite insulating tube which is composed of a loop-shaped insulating tube A and a loop-shaped insulating tube B which has the same length as that of the loop-shaped insulating tube A and has an inner diameter greater than the outer diameter of the loop-shaped insulating tube A, and into which the loop-shaped insulating tube A is inserted and fitted concentrically therein.
  • the insulating distance and space distance therearound can readily be selected as required,and the loop-shaped insulating tube free of defects such as pinholes can be employed directly as an insulating covering for a coil to be insulated.
  • the present invention also provides a process for manufacturing a covered coil, which process comprises inserting a wire-shaped material of a given length into a loop-shaped insulating tube having a given length and diameter from the inlet open tip thereof to the outlet open tip thereof, detachably fixing the head tip of the wire-shaped material to a tail section of the wire-shaped material at a given point thereof between the tail tip thereof and the inlet open tip of the loop-shaped insulating tube to form a wire-shaped guide having a loop and a tail section thereof, fixing a wire to the tail tip of the wire-shaped guide, and rolling in by the rotating force of a pair of rolling-in rollers provided face to face to each other the wire-shaped guide so formed and the wire fixed thereto in order through the loop-shaped insulating tube to effect winding by a given number of turns, while holding therebetween the wire-shaped guide so formed and the wire fixed thereto by means of a pair of rolling-in rollers.
  • the covered coil according to the present invention can readily be manufactured at low cost by a simple process such that the wire is rolled in the loop-shaped insulating tube by the application of the rotation of a pair of rolling-in rollers, and the wire-shaped guide so formed and the wire fixed thereto are rolled in together by means of the rolling-in rollers in order to make it easy to roll in the wire through the loop-shaped insulating tube.
  • the present invention further provides a process for manufacturing a covered coil, which process comprises inserting a wire-shaped material of a given length into a loop-shaped insulating tube having a given length and diameter from the inlet open tip thereof to the outlet open tip thereof, detachably fixing the head tip of the wire-shaped material to a tail section of the wire-shaped material at a given point thereof between the tail tip thereof and the inlet open tip of the loop-shaped insulating tube to form a wire-shaped guide having a loop and a tail section thereof, fixing a wire to the tail tip of the wire-shaped guide, and rolling in by the rotating force of a pair of rolling-in rollers provided face to face to each other the wire-shaped guide so formed and the wire fixed thereto in order through the loop-shaped insulating tube to effect winding by a' given number of turns, while holding therebetween the wire-shaped guide so formed and the wire fixed thereto by means of the rolling-in rollers, winding a string for use in binding a winding so formed around the winding
  • the present invention also provides a device for manufacturing a covered coil, which device comprising a means for fixing a loop-shaped, insulating tube, a pair of rolling-in rollers provided face to face to each other for rolling in a wire through the loop-shaped insulating tube, while holding the wire therebetween, a drive means for the rolling-in rollers, a pair of leading-in rollers linked to the rolling-in rollers and for making uniform the tension applied to the wire by the rolling-in rollers, and a pair of counter rollers for counting the number of turns of winding from the total length of the wire lead therein.
  • the tension applied to the wire by the rolling-in rollers can be set at a low and uniform value to maintain the rolling-in force, and in counting the number of turns of winding, a uniform tension applied to the wire and the counter rollers combine to permit displaying the number of turns of winding, setting a given number of turns of winding, and stopping the operation for counting.
  • Figures 1 and 2 show one embodiment of the present invention
  • Figure 1 is a perspective view of a degaussing coil according to the present invention
  • Figure 2 is an explanatory view of a process and device for manufacturing a covered coil according to the present invention.
  • Figure 1 shows a degaussing coil as an example of the present invention.
  • an enameled wire or insulated wire 2 is rolled in to form a loop therein a given number of times through a loop-shaped insulating tube 1 having a uniform wall thickness, the inlet and outlet terminal sections 2a, 2b of the insulated wire 2 are covered with a pair of inlet and outlet small insulating tubes 3a, 3b respectively, and one open tip of the small insulating tube sealed to be insulated by heat bonding or the like integrally to the open tip of the loop-shaped insulating tube.
  • the covered coil with a insulating covering uniform in thickness can be obtained, and the insulating distance as well as the space distance therearound can readily be selected as required, which results in making it possible to manufacture a highly reliable covered coil.
  • the loop-shaped insulating tube having a given length and diameter of the present invention should be construed to include a loop-shaped composite insulating tube.
  • a highly reliable improved degaussing coil with a doubly insulated coil may be obtained by rolling in a wire through a loop-shaped composite insulating tube which is composed of a loop-shaped insulating tube A and a loop-shaped insulating tube B which has the same length as that of the loop-shaped insulating tube A and has an inner diameter greater than the outer diameter of the loop-shaped insulating tube A, and into which the loop-shaped insulating tube A is inserted and fitted therein concentrically.
  • loop-shaped insulating tubes A and B can be arbitrarily selected as required, which makes it very easy to design and manufacture a doubly insulated coil.
  • a covered coil that the covered coil is obtained by winding a wire through a loop-shaped heat shrinkable plastic tube as a loop-shaped insulating tube used or as an inner loop-shaped insulating tube for the loop-shaped 'composite insulating tube mentioned above, and thereafter heating the covered coil in an oven or the like for heat shrinking the loop-shaped heat shrinkable plastic tube, an improved covered coil having an insulating covering or double insulating covering uniform in thickness, and having a well arranged coil as above and consequently less vibration humming can be obtained advantageously.
  • the loop-shaped insulating tube may cover two or more coils, or may cover one coil having one or more intermediate taps.
  • a wire-shaped material of a given length is inserted into a loop-shaped insulating tube 1 uniform in thickness and having a given length and diameter from the inlet open tip thereof to the outlet open tip thereof.
  • the head tip of the wire-shaped material is fixed to the tail section of the wire-shaped material at a given point thereof between the tail tip thereof and the inlet open tip of the loop-shaped insulating tube 1 to form a wire-shaped guide composed of a loop and a tail section thereof.
  • the wire-shaped material is formed into a loop through the loop-shaped insulating tube as mentioned above in order to make wire length uniform for each turn of a coil, and prevent the wire rolled in from being broken or bent. Therefore, the wire-shaped material should have an appropriate elasticity and stiffness.
  • the wire used for winding is suitable as a wire-shaped material
  • the wire may be used as the wire-shaped material, where a loop may be formed by soldering to fix, and after a coil is formed a guide section of the wire may be removed.
  • a wire-shaped material made of an insulating material such as plastics has such an advantage that the material used as a guide may be allowed to remain in the coil after the coil is formed.
  • the loop-shaped insulating tube 1 is fixed in place along a guide groove 5 formed in a workbench 4, and a wire is fixed to the tail tip of the wire-shaped guide so formed.
  • the wire-shaped guide so formed and the wire fixed thereto are rolled in through a loop-shaped insulating tube 1 by the application of a rolling-in roller 7 rotated by a driving source such as a motor and a rolling-in roller 8 linked to the roller 7 to rotate.
  • the wire 2 When rolled in, the wire 2 is lead in to the rolling-in rollers 7,8 by means of a pair of leading-in rollers 9,9 1 linked to the rolling-in rollers 7,8 to rotate so that an unfavorable tension may not be applied to the wire 2,-which makes it possible to keep the rolling-in force of the rolling-in rollers 7,8 at an appropriately high level to be rolled in easily.
  • a number of times of winding that is, a number of turns is counted by means of a pair of counter rollers 10, 10' located between the rolling-in rollers 7,8 and a pair of leading-in rollers 9,9', and the value of a number of turns of winding is displayed by means of a winding number display counter 11.
  • the winding number display counter 11 is provided with a memory storage attached thereto such that a predetermined number of turns of winding is set, and when the set number is reached the operation thereof is stopped by means of a driving source 6.
  • a uniform tension applied to the wire by means of the leading-in rollers 9,9' makes it possible for the counter rollers 10,10' to count accurately the number of turns of winding.
  • the resultant winding is bound to arrange the coil covered by the loop-shaped insulating tube 1. That is, after the completion of the winding procedure, the wire is cut to length to form an inlet terminal section thereof.
  • a string for use in binding set in a winding binding head 13 is rolled a few times around the coil to bind it and to fix a head section of the string to the coil, and then while the coil is turning in the peripheral direction through the loop-shaped insulating tube 1 by means of the rolling-in rollers 7,8, a winding binding mechanism 12 is operated to bind helically the coil automatically by means of the winding binding head 13. After the binding procedure is completed, a tail section of the string for use in binding is fixed to the coil.
  • the coil covered by the loop-shaped insulating tube 1 is bound and arranged as mentioned above so that a humming due to vibration may be reduced.
  • the coil may be arranged by covering tightly the coil with heat shrinkable plastics as mentioned above, or by encapsulating and setting therein an encapsulant such as an elastic oil-modified polyester varnish or cold-setting silicone rubber.
  • an encapsulant such as an elastic oil-modified polyester varnish or cold-setting silicone rubber.
  • the method of encapsulating and setting the elastic oil-modified polyester varnish or cold-setting silicone rubber has such advantages that the loop-shaped insulating tube 1 covering the coil can be employed directly as a mold for encapsulation, and after encapsulating, the encapsulant can be set to form easily a coil having a specified shape as required.
  • the loop-shaped insulated coil is removed from the guide groove 5.
  • the wire fixed to the tail tip of the wire-shaped guide is removed, and a pair of small insulating tubes 3a,3b at least enough to cover the wire are inserted into the inlet and outlet terminal sections 2a,2b of the wire 2 rolled in respectively.
  • one open tip of the small insulating tube is sealed to be insulated integrally to the open tip of the loop-shaped insulating tube 1 to obtain a covered coil as a final product.
  • the coil so formed can not be covered entirely with the loop-shaped insulating tube due to the rolling-in rollers 7,8 and the winding binding head 13 used.
  • a large insulating tube having a given length and enough to cover tightly the loop-shaped insulating tube 1 may be fitted thereon before starting the winding procedure mentioned above, and may be fitted over a coil section not to be covered with the loop-shaped insulating tube 1 after the sealing procedure mentioned above is completed by shifting it thereover to seal entirely the uncovered coil section, so that the covered coil may be completely isolated from unfavorable environments.
  • the rolling-in roller 8 is fitted rotatably to a shaking rod 14 mounted shakably on the workbench 4. Movements of the shaking rod 14 as shown in Figure 2 makes it possible to hold the wire therebetween, or to release the wire from being held simply and easily.
  • a loop-shaped covered coil as final product can readily be manufactured at low cost by a simple process without needing highly complicated manufacturing facilities, because the winding procedure is carried out directly in a loop-shaped insulating tube, which makes it unnecessary to seal a cut in an indulating tube as in the conventional covered coil, or to wrap an coil with an insulating tape as in the prior art.
  • a. loop-shaped covered coil such as a degaussing coil or the like can readily be manufactured at low cost by a simple process without needing high manufacturing techniques, while a loop-shaped insulating tube used has such a uniform wall thickness that the insulating distance and space distance therearound can readily be selected as required, and the loop-shaped covered coil thus obtained is free from defects such as pinholes on the insulating tube and is isolated safely from unfavorable environments, which results in a highly reliable final product as well.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP80301335A 1980-04-24 1980-04-24 Bobine revêtue, procédé et dispositif pour sa fabrication Withdrawn EP0038883A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP80301335A EP0038883A1 (fr) 1980-04-24 1980-04-24 Bobine revêtue, procédé et dispositif pour sa fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80301335A EP0038883A1 (fr) 1980-04-24 1980-04-24 Bobine revêtue, procédé et dispositif pour sa fabrication

Publications (1)

Publication Number Publication Date
EP0038883A1 true EP0038883A1 (fr) 1981-11-04

Family

ID=8187153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80301335A Withdrawn EP0038883A1 (fr) 1980-04-24 1980-04-24 Bobine revêtue, procédé et dispositif pour sa fabrication

Country Status (1)

Country Link
EP (1) EP0038883A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2121661A1 (es) * 1995-04-07 1998-12-01 Hispano Portuguesa De Bobinado Proceso de fabricacion de bobinas desmagnetizadoras.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR737051A (fr) * 1932-05-13 1932-12-06 Cfcmug Procédé de bobinage à l'intérieur d'un corps creux de forme annulaire
GB851233A (en) * 1957-10-11 1960-10-12 Brentford Transformers Ltd Improvements in or relating to insulated current carrying members
FR2080733A1 (fr) * 1970-02-24 1971-11-19 Asea Ab
US3878494A (en) * 1972-04-06 1975-04-15 Warwick Electronics Inc Coil assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR737051A (fr) * 1932-05-13 1932-12-06 Cfcmug Procédé de bobinage à l'intérieur d'un corps creux de forme annulaire
GB851233A (en) * 1957-10-11 1960-10-12 Brentford Transformers Ltd Improvements in or relating to insulated current carrying members
FR2080733A1 (fr) * 1970-02-24 1971-11-19 Asea Ab
US3878494A (en) * 1972-04-06 1975-04-15 Warwick Electronics Inc Coil assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2121661A1 (es) * 1995-04-07 1998-12-01 Hispano Portuguesa De Bobinado Proceso de fabricacion de bobinas desmagnetizadoras.

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19811021

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19831212

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HATANAKA, TOSHIRO