CA1094155A - Flyback transformer and high tension lead assembly - Google Patents
Flyback transformer and high tension lead assemblyInfo
- Publication number
- CA1094155A CA1094155A CA282,381A CA282381A CA1094155A CA 1094155 A CA1094155 A CA 1094155A CA 282381 A CA282381 A CA 282381A CA 1094155 A CA1094155 A CA 1094155A
- Authority
- CA
- Canada
- Prior art keywords
- high tension
- lead wire
- connector body
- flyback transformer
- rectifier
- 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
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Title of the Invention Flyback transformer with high tension connector Abstract of the Disclosure A low tension and a high tension coil on a flyback transformer are coupled together with an output rectifier connected with the high tension coil by an enclosure of an electrically insulating material.
A hollow cylindrical connector body of an electrically insulating material is attached to the enclosure, and has one end of a greater inner diameter than that of the other end, with a step formed intermediate the both ends. Said one end of the connector body is disposed within the enclosure and is adapted to receive a conductive cap electrically connected with the rectifier while said other end opens outside the enclosure. The flyback transformer is mounted on a television receiver, and the end of a high tension lead wire is inserted into the connector body of the flyback transformer through said other end in order to supply the rectifier output to a cathode ray tube. At its inner end, the high tension lead wire is rigidly formed with a fastener of an electrically conductive material and having a plurality of resilient wings, which engage the conductive cap and are locked by the step when the inner end is inserted into the connector body.
A hollow cylindrical connector body of an electrically insulating material is attached to the enclosure, and has one end of a greater inner diameter than that of the other end, with a step formed intermediate the both ends. Said one end of the connector body is disposed within the enclosure and is adapted to receive a conductive cap electrically connected with the rectifier while said other end opens outside the enclosure. The flyback transformer is mounted on a television receiver, and the end of a high tension lead wire is inserted into the connector body of the flyback transformer through said other end in order to supply the rectifier output to a cathode ray tube. At its inner end, the high tension lead wire is rigidly formed with a fastener of an electrically conductive material and having a plurality of resilient wings, which engage the conductive cap and are locked by the step when the inner end is inserted into the connector body.
Description
0~ 5 Background of the Invention The invention relates to a flyback transformer for use in a television rec~iver, and more particularly to the construction of a connector for a high tension lead wire which is used to supply a transformer outpu-t to the anode of a cathode ray tuhe.
Recehtly a flyba~k transformer is manufactured in compact overall configuration by forming an integral coil assembly which is mounted on a core. The coil assembly includes a low tension and a high tension coil and a rectifier for rectifying a high tension output from the high tension coil, these components being integrally encapsulated in .,,~, . ~ ~
' , ~
. . ~
an insulating resin. sy way of example U.S. Patent No. 3,229, 149 (issued Jan 11, 1966 to Yasushi Watanabe et al) discloses an output end of a high tension coil which is perman~ntly con-ne~ted througll a diode with a high tension lead wire, with the coil and the diode as well as the junction therebetween being integrally encapsula-ted in a wax, rubber or syn-thetic resin.
Ilowever, in this arrangement, if a failure is found in either coil assembly or higll tension lead wire in the course of the manufacturillg~ the entire assembly must be disposed as defective, ~ a ~,hus causillg an increased waste and cost. A relatively large ~hiclcn~ss and high stiffness of the high tension ]ead wire pre-~en~d difficulties and de~raded the operational efficiency when a ~inished flyback transformer is packaged, shipped or mounted on a television receiver where the entire assembly is integrally encapsulated in synthetic resin.
` U.S. Patent No. 4,016,478 (issued April 5, 1977 to Iler~ert ~ndes et al) discloses a flyback transformer which avoids such problems. Specifically, in -the disclosed transformer, the higll tension lead wire is not permanently connected with the coil ~0 as~cmbly, but is connected therewith through a socket connector so as to be replaceable whenever necessary. The socket connector c~n~prises a soc~et provided on the part of the coil assembly, and a plu~ attached to the high tension lead wire. The socket com-pL^ises ~ cylindrical portion having a plurality of slits former t.herein, and a clamping screw which threadably engages around the cylindrical portion for exerting a centripetal pressure thereto.
The end of the high tension lead wire which includes the plug is inserted into the cylindrical portion and is firmly gripped therein by tightening the clamping screw. ~owever, with a flyback trans-former of this type, the clamping screw must be turned whenattaching the lead wire to a television receiver, and a satis-factory electrical connection may not be achieved if the operation ~[99~
. .
is imperfect. Since it is usually unnecessary to remove the l~igh tension lead wire after the fly~ack transformer is once mounted on the television receiver, ~) ~0 - 2a -s~
it is desirable that the lead wira be locked in place after such mounting.
Summary o~ the Invention It is an object of the invention to provide a flyback transformer having an associated high tension lead wire which is separately manufactured and which is adapted to be rigidly connected with the transformer in locked manner after the transformer has been mounted on a television receiver.
It is a specific object of the invention to provide a flyback transformer having a connector for a high tension lead wire which is simple in construction and easy to manufacture.
It is another object of the invention to provide a connect~r for high tension lead wire which prevents an electric discharge which may occur along the lead wire.
It is a further object of the invention to-provide a connector for high tension lead wire which prevents ingress of moisture.
In accordance with the invention, there is provided a flyback transformer for a television receiver including a core, a co~l assembly mounted on the core and including a low tension and a high tension coil and also including a rectifier connected with the high tension coil for rectifyiny a high tension output therefrom, the coil assembly being contained in an enclosure of an electrically insulating material together with the rectifier, a high tension lead wire having an insulating coating, and astener means for providing an electrical connection between the high tension lead wire and the rectifier; characterized in that the fastener means comprises a tubular connector bod~ -formed of an electrically insulating material and having one end of a greater inner diameter than that of the other end, a step being formed inside said body where the inner diameter thereof changes, the connector body being supported by the enclosure ,.
.
and having said other end opening outside the enclosure, said other end being formed with a plurality of substantially axially extending slits with a plurality of inwardly extending lips at the ends thereof, a conductive cap fitted into the space at said one end of the connector body and positioned against the step and electrically connected with the rectifier, and a fastener of an elect.rically conductivematerial firmly mounted on and electrically connected with the high tension lead wire and adapted to engage the conductive cap and to be locked by the step as the end of the high tension lead wire is inserted into the connector body, said fastener means including a resilient insulating cap fitted on the end of the high tension lead wire : and which is adapted to be fitted over said other end of the connector body to resiliently urge the lips inwardly to firmly grip the high tension lead wire. ~
.
3a~
-5~i .
.
In a preferred embodiment of the invention, said other end of tne connector body projects out of the enclosure and com-prise a piurality of axially extending li~s formed ~y a plurality of slits t~lerebetween, each lip having a slight inward projection.
An insulating cap of a resilient material is disposed around the end of -the high tension lead wire, and urges the individual lips inwaraly so that their projections firmly grip the high tension lead wire when the end of the lead wire is inserted i~to the con-nector body.
10Brief Description of the Drawings Fig~ 1 is a schematic view, partly in section, of the flyback transformer according to -the invention before it is coupled with a high tension lead wire;
; Fig. 2 is a perspective view of a fastener shown in Fig. l;
Fig. 3 is a fragmentary view, partly in section, of the flyback transformer coupled with the high tension lead wire;
Fig. 4 i5 a fragmentary, schematic view of another embodiment of the invention in which the flyback transformer incorporates insulating casing; and Fig. 5 is a sectional view of a modification of the conductive cap shown in Figs. 1 and 4.
Description of Preferred Embodiments Referring to Fig. 1, there is shown a coil assernbly 10 ~hich is fitted on the upper limbs of a pair of U-shaped core halves 11, 12. The assembly 10 comprises a coil bobbin 13, and a low tension and a high tension coil, generally shown at 14, which are disposed on the bobbin, It will be understood that the core halves 11, 12 are clamped together by known clamping means to interconnect them, thus forming a closed magnetic path extend-ing through the low tension and the high tension coil. A hollow cylindrical connector body 20 is formed of an electrically insulat-.~ .
~ - 4 -.
... .
. .
ing resin material, and its one end 2~ includes an extension which is secured to ~he bobbin 13. The other end of the con-nector body 20 is formed with four axially ex-tending slits 21, " thereby forming four resillent lips 22. At its free end, each lip 22 carries an inwardly ex-tending projection 221 of a short length which extend toward the center axis of the connector body.
~aid one end 24 of the connector bod~ 20 has a greater inner diameter than the other end, thereby forming a step 23 there-between. The end 24 is closed by a conductive cap 25 of an electrically conductive material such as brass which is Eitted into the end 24 and frictionally retained against the step 23.
A rectifier 15 wllich may comprises silicon diode is connected ' between the output end of the high tension coil and the conductive cap 25. The coils 14, rectifier 15 and connector body 20 includ-ing the conductive cap 2~, exclusive of the region of the lips 22 ', at the other end thereof, are encapsulated b~ ~ltegrally moulding ' an insulating layer ]6 made of a silicone rubb~r 1-2 polybutadiene ,~ resin or epoxy resin therearound.
A high tension lead wire 30 having an insulating coat-ing is prepared separately from the coil assembly 10. At its one end, the high tension lead wire 30 is mechani,cally and elec-trically connected with an anode cap 31 for connection with -the anode of a cathode ray tube (not shown) while the other end is . , .
" soldered with a fastener 32 of a resilien-t conductive material ~" such as pihospllor bronze. Adjacent to the other end of the lead ' wi,re 30, an insulating cap 40 is slidably fitted thereon. As shown in Fig. 2, the fastener 32 comprises a disc 321 of substan-tially the same diameter as the outer diameter of the lead wire .
~`~ 30, and a plurality of wings 322, four in the example shown, .,, ~ 30 which are disposed at an equal interval around the circumference `~ of the disc 321 and extend radially outward. The disc 321 is ,~' centrally formed with an opening 323 for passing the conductor of the lead wire 30 therethrough. In this manner, the fastener 32 .
is in the Iorm of an arrowhead at the end of the high tension lead wire 30O
The insulating cap 40 is formed of a material such as silicone ruhber, for example, and includes a base 41 which slidably engages the lead wire 30, and a cylindrical cover 4~. As will be described later, the cover 42 is sized and configured in connec$ion wi~ the outer perip~ery o~ the connector body 20, Describing now the connection between the lead wire 30 and the connector body 20, the Iastener ~2 is pressed into the connector body 20.
~t this time, ~e lips 22 at the other end OI the connector body 20 are -spread radially outward while ~e wings 322 on the fastener 32 are compressed inwardly. When ~e fastener 3~ moves past ~he projections 221 `~
of the lips 22, the lips 22 return to their original position. The wings 322 of the fastener remain compressed even ~ough they may slightly restore resiliently. When the lead wire 30 is driven furSher inward into ~e ;
connector body 20, t~e fastener 32 evelltually enters the interior o the conductive cap 25, whereupon the wings 322 are al:Lowed to spread outward into contact with the conductive cap 25. In this manner, ~e lead wire 30 ~ ;
is locked against withdrawal by virtue o~ the en~age~ent o$ the wi~gs 322 ;
against the step 2~ formed in the cormector body 20.
When mounting, the anode cap 31 is conneoted wi~ ~he arlode of a ca~ode ray tllbe, and the insula~ing cap 40 is fitted over that portion of t~e connector body 20 which is ea;posed o~t of ~e illsulating layex 16 By choosing an inner diameter of ~e cover 42 which is slightly less tha~
.
the outer diameter of the adjacent end of ~e connsctor body 20, ~e resilience of the material of the cover 42 urges th0 lips 2~ radially ": ~
ward to oause the projection~ 221 to bear against the high tenBion lead wire 30 with a su~icie~ force to prevent a~ angular moveme~t thereo~ about its a~is. ~ ;
As will be noted rom Fig~ 3, with the arrangement o the in~e~io the wings 322 Oll the ~astener 30 engage the con~uctive cap 25 a~ soon as ~ `
:
~: `
the end of the wings is engaged with the step 23 in the connector body 20, ~iUS preventing a withdrawal thereof and completing a connection ~hereof :
:1 wi1~ the rectified high tension output from the recti:~ier 15. The . ' insulating cap 40 covers thie entire e~po~ed portion of the connector 5I S body 20, thus preventing i~gress oP moisture into the connector body and al80 preventing a discharge from ~e i~ternal parts thereof. ` -Fig. 4 shows ano~er embodimer~ of the invention in which the coil a~sembly and the rectifler of the flyback trans~ormer are separately . ` -~
contained iIli a common in~ulating casing 50. In ~iis Figure, part~
corresponding to those shown in Figs. 1 to 3 are desi~ated b~ like numerals. The casing 50 includes a core receiving cylindrical portion 51 around which a low tension and a high tension coil 17, 18 are concentricall~
mounted~ The insulating case 50 includes a detent, which mate~ with a radial rib 61 for:~ed peripherally of a connector body 60, ~us supportinig i:
- ~ 15 the latter. The connector body 60 is constructed in the ~imilar manner .
a~ the connector body 20 and ~erefore will not be de~cribed, Lip~ 22 .
projects out oP the casing 50, a~di a conductive cap 25 loc~ted at ~lQ other e~d of the casing 50 is electrically connected through a rectlfier 15 . disposed therein with the high tension Goil 18~ The ho~low ~pace wilhin` . `;
~' ~ 20 the casing 5รป is filled with a name-proof insulating re~in.
Fig~ 5 shows another Iorm o~ the conductive cap. In this example,, a conductive cap 2~ is again U-shaped in cro~s ~ection, and has an inwardly curved edge 261 $ormed around ~e opening for engageme~
- with the step 23 in the connector bodyc The edge 261 is adapted to mate;
. 25 with the WiIlg~ 322 OI t~e fastener 32J l~us improving the electric~
connection between ~e cap 26 and the ~a~tener 32.
" '~
. . . , ~ ~
Recehtly a flyba~k transformer is manufactured in compact overall configuration by forming an integral coil assembly which is mounted on a core. The coil assembly includes a low tension and a high tension coil and a rectifier for rectifying a high tension output from the high tension coil, these components being integrally encapsulated in .,,~, . ~ ~
' , ~
. . ~
an insulating resin. sy way of example U.S. Patent No. 3,229, 149 (issued Jan 11, 1966 to Yasushi Watanabe et al) discloses an output end of a high tension coil which is perman~ntly con-ne~ted througll a diode with a high tension lead wire, with the coil and the diode as well as the junction therebetween being integrally encapsula-ted in a wax, rubber or syn-thetic resin.
Ilowever, in this arrangement, if a failure is found in either coil assembly or higll tension lead wire in the course of the manufacturillg~ the entire assembly must be disposed as defective, ~ a ~,hus causillg an increased waste and cost. A relatively large ~hiclcn~ss and high stiffness of the high tension ]ead wire pre-~en~d difficulties and de~raded the operational efficiency when a ~inished flyback transformer is packaged, shipped or mounted on a television receiver where the entire assembly is integrally encapsulated in synthetic resin.
` U.S. Patent No. 4,016,478 (issued April 5, 1977 to Iler~ert ~ndes et al) discloses a flyback transformer which avoids such problems. Specifically, in -the disclosed transformer, the higll tension lead wire is not permanently connected with the coil ~0 as~cmbly, but is connected therewith through a socket connector so as to be replaceable whenever necessary. The socket connector c~n~prises a soc~et provided on the part of the coil assembly, and a plu~ attached to the high tension lead wire. The socket com-pL^ises ~ cylindrical portion having a plurality of slits former t.herein, and a clamping screw which threadably engages around the cylindrical portion for exerting a centripetal pressure thereto.
The end of the high tension lead wire which includes the plug is inserted into the cylindrical portion and is firmly gripped therein by tightening the clamping screw. ~owever, with a flyback trans-former of this type, the clamping screw must be turned whenattaching the lead wire to a television receiver, and a satis-factory electrical connection may not be achieved if the operation ~[99~
. .
is imperfect. Since it is usually unnecessary to remove the l~igh tension lead wire after the fly~ack transformer is once mounted on the television receiver, ~) ~0 - 2a -s~
it is desirable that the lead wira be locked in place after such mounting.
Summary o~ the Invention It is an object of the invention to provide a flyback transformer having an associated high tension lead wire which is separately manufactured and which is adapted to be rigidly connected with the transformer in locked manner after the transformer has been mounted on a television receiver.
It is a specific object of the invention to provide a flyback transformer having a connector for a high tension lead wire which is simple in construction and easy to manufacture.
It is another object of the invention to provide a connect~r for high tension lead wire which prevents an electric discharge which may occur along the lead wire.
It is a further object of the invention to-provide a connector for high tension lead wire which prevents ingress of moisture.
In accordance with the invention, there is provided a flyback transformer for a television receiver including a core, a co~l assembly mounted on the core and including a low tension and a high tension coil and also including a rectifier connected with the high tension coil for rectifyiny a high tension output therefrom, the coil assembly being contained in an enclosure of an electrically insulating material together with the rectifier, a high tension lead wire having an insulating coating, and astener means for providing an electrical connection between the high tension lead wire and the rectifier; characterized in that the fastener means comprises a tubular connector bod~ -formed of an electrically insulating material and having one end of a greater inner diameter than that of the other end, a step being formed inside said body where the inner diameter thereof changes, the connector body being supported by the enclosure ,.
.
and having said other end opening outside the enclosure, said other end being formed with a plurality of substantially axially extending slits with a plurality of inwardly extending lips at the ends thereof, a conductive cap fitted into the space at said one end of the connector body and positioned against the step and electrically connected with the rectifier, and a fastener of an elect.rically conductivematerial firmly mounted on and electrically connected with the high tension lead wire and adapted to engage the conductive cap and to be locked by the step as the end of the high tension lead wire is inserted into the connector body, said fastener means including a resilient insulating cap fitted on the end of the high tension lead wire : and which is adapted to be fitted over said other end of the connector body to resiliently urge the lips inwardly to firmly grip the high tension lead wire. ~
.
3a~
-5~i .
.
In a preferred embodiment of the invention, said other end of tne connector body projects out of the enclosure and com-prise a piurality of axially extending li~s formed ~y a plurality of slits t~lerebetween, each lip having a slight inward projection.
An insulating cap of a resilient material is disposed around the end of -the high tension lead wire, and urges the individual lips inwaraly so that their projections firmly grip the high tension lead wire when the end of the lead wire is inserted i~to the con-nector body.
10Brief Description of the Drawings Fig~ 1 is a schematic view, partly in section, of the flyback transformer according to -the invention before it is coupled with a high tension lead wire;
; Fig. 2 is a perspective view of a fastener shown in Fig. l;
Fig. 3 is a fragmentary view, partly in section, of the flyback transformer coupled with the high tension lead wire;
Fig. 4 i5 a fragmentary, schematic view of another embodiment of the invention in which the flyback transformer incorporates insulating casing; and Fig. 5 is a sectional view of a modification of the conductive cap shown in Figs. 1 and 4.
Description of Preferred Embodiments Referring to Fig. 1, there is shown a coil assernbly 10 ~hich is fitted on the upper limbs of a pair of U-shaped core halves 11, 12. The assembly 10 comprises a coil bobbin 13, and a low tension and a high tension coil, generally shown at 14, which are disposed on the bobbin, It will be understood that the core halves 11, 12 are clamped together by known clamping means to interconnect them, thus forming a closed magnetic path extend-ing through the low tension and the high tension coil. A hollow cylindrical connector body 20 is formed of an electrically insulat-.~ .
~ - 4 -.
... .
. .
ing resin material, and its one end 2~ includes an extension which is secured to ~he bobbin 13. The other end of the con-nector body 20 is formed with four axially ex-tending slits 21, " thereby forming four resillent lips 22. At its free end, each lip 22 carries an inwardly ex-tending projection 221 of a short length which extend toward the center axis of the connector body.
~aid one end 24 of the connector bod~ 20 has a greater inner diameter than the other end, thereby forming a step 23 there-between. The end 24 is closed by a conductive cap 25 of an electrically conductive material such as brass which is Eitted into the end 24 and frictionally retained against the step 23.
A rectifier 15 wllich may comprises silicon diode is connected ' between the output end of the high tension coil and the conductive cap 25. The coils 14, rectifier 15 and connector body 20 includ-ing the conductive cap 2~, exclusive of the region of the lips 22 ', at the other end thereof, are encapsulated b~ ~ltegrally moulding ' an insulating layer ]6 made of a silicone rubb~r 1-2 polybutadiene ,~ resin or epoxy resin therearound.
A high tension lead wire 30 having an insulating coat-ing is prepared separately from the coil assembly 10. At its one end, the high tension lead wire 30 is mechani,cally and elec-trically connected with an anode cap 31 for connection with -the anode of a cathode ray tube (not shown) while the other end is . , .
" soldered with a fastener 32 of a resilien-t conductive material ~" such as pihospllor bronze. Adjacent to the other end of the lead ' wi,re 30, an insulating cap 40 is slidably fitted thereon. As shown in Fig. 2, the fastener 32 comprises a disc 321 of substan-tially the same diameter as the outer diameter of the lead wire .
~`~ 30, and a plurality of wings 322, four in the example shown, .,, ~ 30 which are disposed at an equal interval around the circumference `~ of the disc 321 and extend radially outward. The disc 321 is ,~' centrally formed with an opening 323 for passing the conductor of the lead wire 30 therethrough. In this manner, the fastener 32 .
is in the Iorm of an arrowhead at the end of the high tension lead wire 30O
The insulating cap 40 is formed of a material such as silicone ruhber, for example, and includes a base 41 which slidably engages the lead wire 30, and a cylindrical cover 4~. As will be described later, the cover 42 is sized and configured in connec$ion wi~ the outer perip~ery o~ the connector body 20, Describing now the connection between the lead wire 30 and the connector body 20, the Iastener ~2 is pressed into the connector body 20.
~t this time, ~e lips 22 at the other end OI the connector body 20 are -spread radially outward while ~e wings 322 on the fastener 32 are compressed inwardly. When ~e fastener 3~ moves past ~he projections 221 `~
of the lips 22, the lips 22 return to their original position. The wings 322 of the fastener remain compressed even ~ough they may slightly restore resiliently. When the lead wire 30 is driven furSher inward into ~e ;
connector body 20, t~e fastener 32 evelltually enters the interior o the conductive cap 25, whereupon the wings 322 are al:Lowed to spread outward into contact with the conductive cap 25. In this manner, ~e lead wire 30 ~ ;
is locked against withdrawal by virtue o~ the en~age~ent o$ the wi~gs 322 ;
against the step 2~ formed in the cormector body 20.
When mounting, the anode cap 31 is conneoted wi~ ~he arlode of a ca~ode ray tllbe, and the insula~ing cap 40 is fitted over that portion of t~e connector body 20 which is ea;posed o~t of ~e illsulating layex 16 By choosing an inner diameter of ~e cover 42 which is slightly less tha~
.
the outer diameter of the adjacent end of ~e connsctor body 20, ~e resilience of the material of the cover 42 urges th0 lips 2~ radially ": ~
ward to oause the projection~ 221 to bear against the high tenBion lead wire 30 with a su~icie~ force to prevent a~ angular moveme~t thereo~ about its a~is. ~ ;
As will be noted rom Fig~ 3, with the arrangement o the in~e~io the wings 322 Oll the ~astener 30 engage the con~uctive cap 25 a~ soon as ~ `
:
~: `
the end of the wings is engaged with the step 23 in the connector body 20, ~iUS preventing a withdrawal thereof and completing a connection ~hereof :
:1 wi1~ the rectified high tension output from the recti:~ier 15. The . ' insulating cap 40 covers thie entire e~po~ed portion of the connector 5I S body 20, thus preventing i~gress oP moisture into the connector body and al80 preventing a discharge from ~e i~ternal parts thereof. ` -Fig. 4 shows ano~er embodimer~ of the invention in which the coil a~sembly and the rectifler of the flyback trans~ormer are separately . ` -~
contained iIli a common in~ulating casing 50. In ~iis Figure, part~
corresponding to those shown in Figs. 1 to 3 are desi~ated b~ like numerals. The casing 50 includes a core receiving cylindrical portion 51 around which a low tension and a high tension coil 17, 18 are concentricall~
mounted~ The insulating case 50 includes a detent, which mate~ with a radial rib 61 for:~ed peripherally of a connector body 60, ~us supportinig i:
- ~ 15 the latter. The connector body 60 is constructed in the ~imilar manner .
a~ the connector body 20 and ~erefore will not be de~cribed, Lip~ 22 .
projects out oP the casing 50, a~di a conductive cap 25 loc~ted at ~lQ other e~d of the casing 50 is electrically connected through a rectlfier 15 . disposed therein with the high tension Goil 18~ The ho~low ~pace wilhin` . `;
~' ~ 20 the casing 5รป is filled with a name-proof insulating re~in.
Fig~ 5 shows another Iorm o~ the conductive cap. In this example,, a conductive cap 2~ is again U-shaped in cro~s ~ection, and has an inwardly curved edge 261 $ormed around ~e opening for engageme~
- with the step 23 in the connector bodyc The edge 261 is adapted to mate;
. 25 with the WiIlg~ 322 OI t~e fastener 32J l~us improving the electric~
connection between ~e cap 26 and the ~a~tener 32.
" '~
. . . , ~ ~
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A flyback transformer for a television receiver including a core, a coil assembly mounted on the core and including a low tension and a high tension coil and also including a rectifier connected with the high tension coil for rectifying a high tension output therefrom, the coil assembly being contained in an enclosure of an electrically insulating material together with the rectifier, a high tension lead wire having an insulating coating, and fastener means for providing an electrical connection between the high tension lead wire and the rectifier;
characterized in that the fastener means comprises a tubular connector body formed of an electrically insulating material and having one end of a greater inner diameter than that of the other end, a step being formed inside said body where the inner diameter thereof changes, the connector body being supported by the enclosure and having said other end opening outside the enclosure, said other end being formed with a plurality of substantially axially extending slits with a plurality of inwardly extending lips at the ends thereof, a conductive cap fitted into the space at said one end of the connector body and positioned against the step and electrically connected with the rectifier, and a fastener of an electrically conductive material firmly mounted on and electrically connected with the high tension lead wire and adapted to engage the conductive cap and to be locked by the step as the end of the high tension lead wire is inserted into the connector body, said fastener means including a resilient insulating cap fitted on the end of the high tension lead wire and which is adapted to be fitted over said other end of the connector body to resiliently urge the lips inwardly to firmly grip the high tension lead wire.
characterized in that the fastener means comprises a tubular connector body formed of an electrically insulating material and having one end of a greater inner diameter than that of the other end, a step being formed inside said body where the inner diameter thereof changes, the connector body being supported by the enclosure and having said other end opening outside the enclosure, said other end being formed with a plurality of substantially axially extending slits with a plurality of inwardly extending lips at the ends thereof, a conductive cap fitted into the space at said one end of the connector body and positioned against the step and electrically connected with the rectifier, and a fastener of an electrically conductive material firmly mounted on and electrically connected with the high tension lead wire and adapted to engage the conductive cap and to be locked by the step as the end of the high tension lead wire is inserted into the connector body, said fastener means including a resilient insulating cap fitted on the end of the high tension lead wire and which is adapted to be fitted over said other end of the connector body to resiliently urge the lips inwardly to firmly grip the high tension lead wire.
2. A flyback transformer according to claim 1, in which the fastener comprises a disc of substantially the same diameter as the outer diameter of the high tension lead wire inclusive of its insulating coating and mechanically and electrically connected with the high tension lead wire, and a plurality of resilient wings disposed at an equal interval around the periphery of the disc and extending in a direction which forms an acute angle with the axial direction of the high tension lead wire.
3. A flyback transformer according to claim 1, in which the conductive cap is cup-shaped and having an inwardly extending flange along its opening, said flange being adapted to engage with the step in the connector body and the fastener.
4. A flyback transformer according to claim 1, in which the enclosure is formed by a resin material cast around the coils and the rectifier, said one end of the connector body being embedded into the cast resin to be supported thereby.
5. A flyback transformer according to claim 1, in which the enclosure comprises a casing which contains the coils and the rectifier, the connector body being secured to the casing in a manner such that said one end thereof is located within the casing, the casing being filled with an insulating resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA282,381A CA1094155A (en) | 1977-07-08 | 1977-07-08 | Flyback transformer and high tension lead assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA282,381A CA1094155A (en) | 1977-07-08 | 1977-07-08 | Flyback transformer and high tension lead assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1094155A true CA1094155A (en) | 1981-01-20 |
Family
ID=4109102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA282,381A Expired CA1094155A (en) | 1977-07-08 | 1977-07-08 | Flyback transformer and high tension lead assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1094155A (en) |
-
1977
- 1977-07-08 CA CA282,381A patent/CA1094155A/en not_active Expired
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