Title of Invention

A COIL COMPONENT FOR AN ELECTROMAGNETIC RELAY

Abstract

A coil component for an electromagnetic relay relates to an electromagnetic relay which provides a coil component for the electromagnetic relay with a magneto-conductive component in shape of “C”. It is provided with a magneto-conductive component in form of “C”, an insulative bobbin, a coil and at least a pair of lead pins integrated with the bobbin, in which the coil is wounded on the bobbin. There are two free ends for each lead pin. One of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. By forming an integrated lead pin with the winding head end for a coil and the pig tail for fetching out a relay coil in the present art and molding the lead pin with the bobbin component, the process of welding a lead pad to a pig tail for fetching out a relay coil with a additional equipment can be omitted. So it can save equipment cost sharply, eliminate the hidden trouble of the rosin joint, simplify the process, increase the space for winding the coil, increase the magnetic efficiency of the coil, simplify the winding process, miniaturize the relay, reduce the material cost and effectively increase the reliability, the productive efficiency and the qualified rate of a relay.

Full Text

FORM 2 THE PATENT ACT 1970 (39 of 1970) & The Patents Rules, 2003 COMPLETE SPECIFICATION (See section 10 and rule 13) 1. A COIL COMPONENT FOR AN ELECTROMAGNETIC RELAY 2. (A) XIAMEN HONGFA ELECTROACOUSTIC CO., LTD (B) A Company Incorporated under the laws of CHINA (C) No.91-101 Sunban S. Rd., Jimei North Ind. Dist., Xiamen, Fujian 361021, China The following specification particularly describes the invention and the manner in which it is to be performed. Technical field The present invention relates to an electromagnetic relay, particularly to a coil component of electromagnetic relay with C-shaped magnetizer or with C-shaped magnetizer and magnetic steel. Background Electromagnetic relay is widely used in autocontrol equipments, owing to development of science and technology, following relay is needed: that has a compact structure, has a small size, has a high sensitivity, has a long useful time, has a high work reliability. Chinese patent number CN02217796 discloses an ultrasmall high sensitivity relay, after a coil has been wound on and encased into a base, a down-lead piece of the coil is welded with a coil leading foot of the relay, then an armature member is assembled on the base, to complete assembly of the relay, which makes the coil leading foot have a hidden trouble of rosin joint, and makes the match of the electromagnetic system and the armature become bad because of the electromagnetic system and the armature are assembled on the base, to make parameters of the relay become unstable. Chinese patent number CN99101704 discloses an electromagnetic relay, after a coil has been circled and before a base is processed by injection moulding, a down-lead piece of the coil is welded with a coil leading foot of the relay on the static spring frame, which has a hidden trouble of rosin joint, and in the working procedure of the injection moulding of a base, the coil and the static spring frame still need to be positioned in a mould of the injection moilding, weld spot is easily struck by outside force to make the weld spot easily break off, and it need additional machining equipment, which has a complex and long technics. Chinese application number CN03141569 discloses an ultrasmall high-sensitivity communication relay, a seat hole of magnetic steel is set in the middle part of a coil frame to make a circling space of the coil is remarkably minished, which will bring on great decrease of magnetic circuit efficiency, and the relay is difficultly miniaturized; the coil has a complex circling technics: in the course of circling the coil, the coil must span the seat hole of magnetic steel, which will increase production cost. Summary of the present invention The purpose of the present invention is to overcome disadvantages of known technology, to provide a coil component for an electromagnetic relay with a C-shaped magneto-conductive component, which can save equipment cost, simplify the process, increase the space for winding the coil, increase the efficiency of magnetic circuit, simplify the winding process of the coil, miniature the relay, increase the reliability of the relay and the productive efficiency and the qualified rate of a relay. The present invention adopts technical proposal as follows: A coil component for an electromagnetic relay, comprising a C-shaped magneto-conductive component, an insulative coil frame, a coil and at least a pair of lead pins; there are two free ends for each lead pin. One of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil; the lead pins are integrated with the coil frame, the free ends of them are extended outside of the coil frame. The coil is wound on the coil frame, the ends for fetching out the coil are separately enlaced and welded on the winding head ends of the pig tails. Said C-shaped magneto-conductive component is C-shaped magnetizer or C-shaped component consisting of magnetizer and magnetic steel. Said C-shaped magneto-conductive component consists of magnetizer and magnetic steel; maybe one pair of magnetic steels respectively set at two ends of a shaft magnetizer, or one pair of magnetizers are respectively set at two ends of a shaft magnetic steel, or a magnetic steel is set at middle of a C-shaped magnetizer. Said lead pins comprise two pairs of lead pins, there are two free ends for each lead pin; one of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. When the coil is unicoil, thereinto pig tails of one pair of coils are for supporting and orientation in the course of machining; when the coil is twin coil, pig tails of the two pairs of coil have the same function. When the C-shaped magneto-conductive component consists of magnetizer and magnetic steel, insulative materials of the insulative coil frame are integrative; the insulative materials wrap other parts other than the two polar of the C-shaped component made up of magnetizer and magnetic steel. Or there are seat holes for the magnetizer or the magnetic steel in the two ends of the coil frame or the center part of the insulative coil frame; the magnetizer or the magnetic steel are set in the seat holes. Said insulative coil frame comprises two end panels and a connective part integrated with the two end panels; the C-shaped magneto-conductive component is set in the insulative coil frame; two polar of the C-shaped magneto-conductive component extends outside of the insulative coil frame from the two end panels; there is a space for containing a coil between the two end panels in the insulative coil frame; the lead pins are respectively integrated with the two end panels of the coil frame by injection moulding. There are seat holes for the magnetizer or the magnetic steel in the two end panels or the connective part of the insulative coil frame; the magnetizer or the magnetic steel are set in the seat holes. The insulative coil frame at least comprises two end panels that wrap underside parts of the two polar of the C-shaped magnetizer; an insulative layer is smeared on surface of the C-shaped magnetizer; there is a space for containing a coil between the two end panels in the insulative coil frame; the lead pins are respectively integrated with the two end panels of the coil frame by injection moulding. The lead pins are on a same frame before enlacing the coil; the frame is made by pressing from an electric metal piece; the metal piece can be made to a series of frames by pressing and the series of frames are integrative. The frame is cut off after the insulative coil frame is made by the C-shaped magnetizer made up of magnetizer and magnetic steel integrating with lead pins, so to get at least two lead pins; or lead pins are unattached parts, which are inserted into the coil frame made by injection moulding. When the C-shaped magneto-conductive component is C-shaped magnetizer, insulative materials of the insulative coil frame are integrative; the insulative materials wrap other parts other than the two polar of the C-shaped component. Lead pins are on a same frame before enlacing the coil; the frame is made by pressing from an electric metal piece; the metal piece can be made to a series of frames by pressing and the series of frames are integrative. The frame is cut off after the insulative coil frame is made by the C-shaped magnetizer with lead pins, so to get at least two lead pins; or lead pins are unattached parts, which are inserted into the coil frame made by injection moulding. The mode of fetching out the coil is as follows: two or four ends for fetching out the coil are separately enlaced and welded on the winding head ends of the pig tails. The C-shaped magneto-conductive component made up of magnetic steel and magnetizer or C-shaped magnetizer can be used in electromagnetic relay; the electromagnetic relay comprises a shell, an armature component, a base part integrated with a coil component and a static spring. The coil component comprises the C-shaped magneto-conductive component made up of magnetic steel and magnetizer or C-shaped magnetizer and an insulative coil frame integrated with the C-shaped magneto-conductive component. A coil is wound on the coil frame; the armature component comprises an armature, at least a moveable spring beside the armature, insulative materials integrated with the armature and the moveable spring. The coil component also comprises lead pins integrated with the coil frame. There are two free ends for each lead pin. One of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. Comparing known technology, the present invention has virtues as follows: by forming an integrated lead pin with the winding head end for a coil and the pig tail for fetching out a relay coil in the present art and molding the lead pin with the bobbin component, the process of welding a lead pad to a pig tail for fetching out a relay coil with a additional equipment can be omitted. So it can save equipment cost sharply, eliminate the hidden trouble of the rosin joint, simplify the process, increase the space for winding the coil, increase the magnetic efficiency of the coil, simplify the winding process, miniaturize the relay, reduce the material cost and effectively increase the reliability, the productive efficiency and the qualified rate of a relay, is propitious to large-scale continuous production. Brief description of attached drawings Figure 1 is a structure sketch map of embodiment 1 of the present invention. Figure 2 is another side structure sketch map in figure 1. Figure 3 is a cutaway view of embodiments of the present invention. Figure 4 is a structure sketch map of lead pins of embodiments of the present invention. Figure 5 is a structure sketch map of lead pin pieces of embodiments of the present invention. Figure 6 is a cutaway view of embodiment 2 of the present invention. Figure 7 is a cutaway view of embodiment 3 of the present invention. Figure 8 is a cutaway view of embodiment 4 of the present invention. Figure 9 is a cutaway view of embodiment 5 of the present invention. Figure 10 is a structure sketch map of embodiment 6 of the present invention. Figure 11 is a base machining drawing of electromagnetic relay adopting the coil component of the present invention. Figure 12 is a structure sketch map of electromagnetic relay adopting the coil component of the present invention. Embodiment We will explain the present invention as follows referring to attached drawings. Embodiment 1 As shown in figures 1 to 3, the present invention comprises a C-shaped component 11 made up of a magnetizer lie; the coil 13 is wound on the insulative coil frame 12; lead pins 14 and 15 are integrated with the insulative coil frame 12; lead pins 14 and 15 respectively have two free ends, wherein free ends, 14a and 15a are pig tails for fetching out a relay coil, and free ends 14b and 15b are used as winding head ends of a coil. When the coil 13 is an unicoil, lead pin 15 is for supporting and orientation in the course of machining; when the coil 13 is twin coil, lead pin 15 has the same function with the lead pin 14. In figure 3, the insulative coil frame 12 comprises two end panels and a connective part integrated with the two end panels; the insulative materials wrap other parts other than the two polar 11 a and 11 b of the C-shaped magnetizer 11; two polar 11 a and 11 b of the C-shaped magneto-conductive component extend outside of the insulative coil frame 12 from the two end panels. The mode of fetching out the coil 13 is as follows: ends for fetching out the coil 13 are separately enlaced and welded on the winding head ends 14b and /or 15b of the pig tails. The coil 13 can be one or two. As shown in figures 4 and 5, the lead pin 14 of the present invention comprises two free ends, wherein one free end 14a is used as a pig tail for fetching out a relay coil, and the other one 14b is used as a winding head end of a coil. Lead pin 14 is on a same frame 17 before enlacing the coil 13; the frame is made by pressing from an electric metal piece; the metal piece can be made to a series of frames 17 by pressing and the series of frames are integrative. The frame 17 is cut off after the insulative coil frame 12 has been made by the C-shaped magnetizer 11 integrated with lead pin 14 by injection moulding, so to get at least two lead pins 14. Or lead pin 14 is unattached part, which is inserted into the coil frame 12. Embodiment 2 Figure 6 is another embodiment of the present invention. The insulative coil frame 12 is not integrative; it comprises two end panels 12a and 12b. The two end panels 12a and 12b respectively wrap the underside parts of the C-shaped magnetizer other than the two polar 1 la and 1 lb. An insulative material 16 wrap the middle part of the C-shaped magnetizer 11. An insulative layer can be smeared on surface of the C-shaped magnetizer 11. Embodiment 3 Figure 7 is another embodiment of the present invention. There are seat holes for the magnetizer 11 c or the magnetic steel 11 d at the two end panels of the insulative coil frame or the center of coil. The magnetizer lie or the magnetic steel lid are set in the seat holes in later working procedure. The C-shaped component 11 made up of the magnetic steel lid and the magnetizer lie can be replaced by C-shaped magnetizer 11 made up of several parts. The C-shaped magnetizer 11 is divided to several parts being similar with above magnetic steel lid and the magnetizer lie. Maybe the coil frame 12 is integrated after the magnetizer lie has been welded with the magnetic steel 1 Id. Embodiment 4 As shown in figure 8, it is another embodiment of the present invention, magnetic steel Id is set at the approximate middle of C-shaped magnetizer lie to form C-shaped component 11. The insulative coil frame 12 wraps the C-shaped component other than the two polar 11a and lib of the magnetizer lie. The coil 13 is wound on the coil frame 12 to form coil component 1. Embodiment 5 Figure 9 is another embodiment of the present invention. There are seat holes for the magnetizer 1 lc or the magnetic steel 1 Id at the two end panels of the insulative coil frame 12 or the center of coil. The magnetizer lie or the magnetic steel lid are set in the seat holes in later working procedure. The C-shaped component 11 made up of the magnetic steel lid and the magnetizer lie can be replaced by C-shaped magnetizer 11 made up of several parts. The C-shaped magnetizer 11 is divided to several parts being similar with above magnetic steel 1 Id and the magnetizer lie. It can be that the coil frame 12 is integrated after the magnetizer lie has been welded with the magnetic steel 1 Id. Embodiment 6 Figure 10 is another embodiment of the present invention. The insulative coil frame 12 is made up of C-shaped component 11 by injection moulding. The coil 13 is wound on the insulative coil frame 12. The lead pin 14 is integrated with the insulative coil frame 12 by injection moulding. There are two free ends for lead pin 14. One free end 14a is used as a pig tail for fetching out a relay coil, and the other one 14b is used as a winding head end of a coil. Two pig tails form a L-shaped. In embodiments 2 to 6, there are same structure with the embodiment 1 about that not be mentioned. As shown in figures 11 and 12, it is an embodiment of an electromagnetic relay adopting the present invention. The electromagnetic relay comprises a shell 4, an armature component 3, a base part 2 integrated with a coil component 1 and a static spring frame 20. The coil component 1 comprises the C-shaped magneto-conductive component 11 and an insulative coil frame 12 integrated with the C-shaped magneto-conductive component. A coil 13 in wound on the coil frame 12. The armature component 3 comprises an armature, a pair of moveable springs beside the armature, insulative materials integrated with the armature and the moveable springs. The coil component 1 also comprises lead pins 14 and /or 15 integrated with the coil frame. There are two free ends for lead pin 14. One free end 14a is used as a pig tail for fetching out a relay coil, and the other one 14b is used as a winding head end of a coil. The lead pin 15 is used for supporting and orientation in the course of machining. The magnetic steel can be set on the coil component 1 or the armature component 3 according to different embodiments. Industry practicability A coil component for an electromagnetic relay of the present invention, comprising a C-shaped magneto-conductive component, an insulative coil frame, a coil and at least a pair of lead pins integrated with the coil frame; there are two free ends for each lead pin. One of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. The present invention has a smart design, is produced easily, can be produced of large-scale continuous production, has a good industry practicability. We Claim: 1. A coil component for an electromagnetic relay, has characters as follows: comprising a C-shaped magneto-conductive component, an insulative coil frame, a coil and at least a pair of lead pins; there are two free ends for each lead pin; one of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil; the lead pins are integrated with the coil frame, the free ends of them extend outside of the coil frame; the coil is wound on the coil frame, the ends for fetching out the coil are separately enlaced and welded on the winding head ends of the pig tails. 2. The coil component for an electromagnetic relay according to claim 1, has characters as follows: said C-shaped magneto-conductive component is C-shaped magnetizer. 3. The coil component for an electromagnetic relay according to claim 1, has characters as follows: said C-shaped magneto-conductive component consists of magnetizer and magnetic steel; maybe one pair of magnetic steels are respectively set at two ends of a shaft magnetizer, or one pair of magnetizers are respectively set at two ends of a shaft magnetic steel, or a magnetic steel is set at middle of a C-shaped magnetizer. 4. The coil component for an electromagnetic relay according to claim 1, has characters as follows: comprising two pairs of lead pins, there are two free ends for each pair lead pins; one of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. 5. The coil component for an electromagnetic relay according to claims 1 or 2 or 3 or 4, has characters as follows: said insulative coil frame comprises two end panels and a connective part integrated with the two end panels; the C-shaped magneto-conductive component is set in the insulative coil frame; two polar of the C-shaped magneto-conductive component extends outside of the insulative coil frame from the two end panels; there is a space for containing a coil between the two end panels in the insulative coil frame; the lead pins are respectively integrated with the two end panels of the coil frame by injection moulding. 6. The coil component for an electromagnetic relay according to claim 5, has characters as follows: there are seat holes for the magnetizer or the magnetic steel at the two end panels or the connective part of the insulative coil frame; the magnetizer or the magnetic steel are set in the seat holes. 7. The coil component for an electromagnetic relay according to claims 1 or 2, has characters as follows: the insulative coil frame at least comprises two end panels that wrap underside parts of the two polar of the C-shaped magnetizer; an insulative layer is smeared on surface of the C-shaped magnetizer; there is a space for containing a coil between the two end panels in the insulative coil frame; the lead pins are respectively integrated with the two end panels of the coil frame by injection moulding. 8. The coil component for an electromagnetic relay according to claims 1 or 3, has characters as follows: the insulative coil frame at least comprises two end panels that wrap underside parts of the two polar of the C-shaped magnetizer made up of magnetizer and magnetic steel, namely the C-shaped magnetizer made up of magnetizer and magnetic steel has two polar and a middle part that is not wrapped by insulative materials; an insulative layer is smeared on surface of the C-shaped magnetizer made up of magnetizer and magnetic steel; there is a space for containing a coil between the two end panels in the insulative coil frame ; the lead pins are respectively integrated with the two end panels of the coil frame by injection moulding. 9. The coil component for an electromagnetic relay according to claim 1, has characters as follows: a pair of lead pins are on a same frame before enlacing the coil; the frame is made by pressing from an electric metal piece; the frame is cut off after the insulative coil frame has been made by the C-shaped magnetizer integrated with lead pins, so to get at least two lead pins. 10. The coil component for an electromagnetic relay according to claims 1 or 4, has characters as follows: two or four ends for fetching out the coil are separately enlaced and welded on the winding head ends of the pig tails. 11. A coil component for an electromagnetic relay as claimed substantially as herein described with forgoing description & drawings. Abstract A coil component for an electromagnetic relay relates to an electromagnetic relay which provides a coil component for the electromagnetic relay with a magneto-conductive component in shape of "C". It is provided with a magneto-conductive component in form of "C", an insulative bobbin, a coil and at least a pair of lead pins integrated with the bobbin, in which the coil is wounded on the bobbin. There are two free ends for each lead pin. One of the free ends is used as a pig tail for fetching out a relay coil, and the other one is used as a winding head end of a coil. By forming an integrated lead pin with the winding head end for a coil and the pig tail for fetching out a relay coil in the present art and molding the lead pin with the bobbin component, the process of welding a lead pad to a pig tail for fetching out a relay coil with a additional equipment can be omitted. So it can save equipment cost sharply, eliminate the hidden trouble of the rosin joint, simplify the process, increase the space for winding the coil, increase the magnetic efficiency of the coil, simplify the winding process, miniaturize the relay, reduce the material cost and effectively increase the reliability, the productive efficiency and the qualified rate of a relay.

Documents:

2095-MUMNP-2007-ABSTRACT(4-10-2012).pdf

2095-mumnp-2007-abstract.doc

2095-mumnp-2007-abstract.pdf

2095-MUMNP-2007-CLAIMS(AMENDED)-(4-10-2012).pdf

2095-mumnp-2007-claims.doc

2095-mumnp-2007-claims.pdf

2095-mumnp-2007-correspondence(25-3-2008).pdf

2095-MUMNP-2007-CORRESPONDENCE(8-12-2010).pdf

2095-mumnp-2007-correspondence-received.pdf

2095-mumnp-2007-declaration(17-1-2008).pdf

2095-mumnp-2007-description (complete).pdf

2095-MUMNP-2007-DRAWING(4-10-2012).pdf

2095-mumnp-2007-drawings.pdf

2095-MUMNP-2007-ENGLISH TRANSLATION(9-4-2012).pdf

2095-mumnp-2007-form 1(17-1-2008).pdf

2095-mumnp-2007-form 18(26-3-2008).pdf

2095-mumnp-2007-form 26(17-1-2008).pdf

2095-mumnp-2007-form 3(17-1-2008).pdf

2095-MUMNP-2007-FORM 3(9-4-2012).pdf

2095-mumnp-2007-form 5(17-1-2008).pdf

2095-mumnp-2007-form-1.pdf

2095-mumnp-2007-form-2.doc

2095-mumnp-2007-form-2.pdf

2095-mumnp-2007-form-3.pdf

2095-mumnp-2007-form-5.pdf

2095-MUMNP-2007-MARKED COPY(4-10-2012).pdf

2095-mumnp-2007-pct-search report.pdf

2095-MUMNP-2007-REPLY TO EXAMINATION REPORT(4-10-2012).pdf

2095-MUMNP-2007-REPLY TO EXAMINATION REPORT(9-4-2012).pdf

2095-MUMNP-2007-SPECIFICATION(AMENDED)-(4-10-2012).pdf

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