Electromagnetic coil

Abstract

The present application provides an electromagnetic coil, comprising a coil bobbin group, wherein the coil bobbin group comprises conductive terminals and two vertically mated coil bobbins, and at least two conductive terminals are mounted on any one of the coil bobbins. Each conductive terminal comprises a riveting section and a pin section which protrude from the coil bobbins. The pin section is connected to the side of the riveting section facing away from the coil bobbins. The width of the riveting section is greater than that of the pin section. The riveting section is used for riveting an enameled wire wound on the corresponding coil bobbin. Pin sections of the plurality of conductive terminals of the coil bobbin group are arranged at equal intervals. By means of the technical solution provided in the present application, the problem in the prior art that product quality is easily affected when an enameled wire is connected to a conductive terminal by means of soldering can be solved.

Description

Electromagnetic coil

[0001] The present application claims priority to the patent application with the application number 202421457918.4, the title of "Electromagnetic coil", which was filed on June 24, 2024, with the State Intellectual Property Office. TECHNICAL FIELD

[0002] The present application relates to the technical field of electromagnetic coils, in particular to an electromagnetic coil. BACKGROUND

[0003] In the prior art, the connection between the end of the enameled wire and the power terminal is usually realized by using a tin soldering process. However, tin soldering has the risk of false welding, and the generated welding slag, tin dust and the like also affect the welding uniformity and welding quality. In addition, if the tin soldering temperature is too high, it is easy to cause damage to the coil framework, thereby affecting the product quality. SUMMARY

[0004] The present application provides an electromagnetic coil to solve the problem that tin soldering in the prior art easily affects product quality.

[0005] In order to solve the above problems, the present application provides an electromagnetic coil, which comprises a coil framework group, the coil framework group comprises a power terminal and two coil frameworks which are docked up and down, and any one coil framework is provided with at least two power terminals; the power terminal comprises a riveting segment and a pin segment which protrude from the coil framework, the pin segment is connected to the side of the riveting segment which is away from the coil framework, the width of the riveting segment is greater than the width of the pin segment, the riveting segment is used for riveting the enameled wire which is wound on the coil framework, and the pin segments of the plurality of power terminals of the coil framework group are equally spaced.

[0006] Further, the riveting segments of the plurality of power terminals of the coil framework group are equally spaced.

[0007] Further, any one coil framework is provided with two power terminals, the center lines of the four power terminals of the coil framework group are located on the same plane which is perpendicular to the axis of the coil framework group, and the two power terminals of one coil framework and the two power terminals of another coil framework are alternately arranged.

[0008] Further, the coil framework comprises a frame body, a mounting seat and a terminal mounting block, the frame body has a winding groove for winding the enameled wire, the mounting seat is arranged on the bottom outer periphery of the frame body, the bottom of the mounting seat is provided with two terminal mounting blocks which are spaced from each other, one power terminal is arranged on any one terminal mounting block, the two coil frameworks are mutually docked, the plurality of terminal mounting blocks are sequentially arranged along the length direction of the mounting seat, and any two adjacent terminal mounting blocks are limitedly matched.

[0009] Further, the edge of the mounting base away from the rack body has two notches, and the two notches correspond to the two terminal mounting blocks below the mounting base respectively.

[0010] Further, the power terminal further comprises a winding segment connected to one end of the riveting segment away from the pin segment, the coil former comprises a terminal mounting block, the terminal mounting block has a terminal groove for mounting the power terminal, the winding segment is at least partially located outside the terminal groove, at least one side of the winding segment has a bundling groove, and the enameled wire is wound around the winding segment for one turn through the bundling groove.

[0011] Further, the connection between the winding segment and the riveting segment is stepped, the stepped connection is distributed on both sides of the power terminal along the length direction, and the bundling groove is arranged at one or both of the stepped connections.

[0012] Further, the power terminal further comprises an anti-extraction segment connected to one end of the winding segment away from the riveting segment, the anti-extraction segment is inserted into the terminal groove, and the outer periphery of the anti-extraction segment inserted into the terminal groove and / or the inner wall of the terminal groove is provided with an anti-extraction structure to limit the movement of the power terminal in the direction of extracting out of the terminal groove.

[0013] Further, the anti-extraction structure comprises an anti-extraction barb and / or an anti-extraction tooth arranged on the anti-extraction segment or the inner wall of the terminal groove.

[0014] Further, at least one side of the anti-extraction segment has a plurality of inclined grooves, the distance between the center line of any one inclined groove and the center line of the anti-extraction segment gradually decreases in the insertion direction of the anti-extraction segment, and the outer periphery of the anti-extraction segment between any adjacent two inclined grooves on the same side of the anti-extraction segment forms an anti-extraction barb or an anti-extraction tooth.

[0015] Further, the riveting segment comprises a main plate and a riveting plate, the main plate is connected with the pin segment, the riveting plate has an opposite connection end and a position-adjustable free end, the connection end of the riveting plate is connected with one side of the main plate, and the riveting plate is bendably arranged towards the main plate to form a riveting gap between the riveting plate and the main plate for riveting the enameled wire.

[0016] Further, the power terminal comprises a power terminal A and a power terminal B, the power terminal A and the power terminal B are mounted on the same coil former, the two riveting segments corresponding to the power terminal A and the power terminal B are symmetrically arranged, and the two connection ends corresponding to the power terminal A and the power terminal B are oppositely arranged.

[0017] Further, the power supply terminals further include a power supply terminal C and a power supply terminal D, the power supply terminal A and the power supply terminal B are mounted on one of the coil frames, the power supply terminal C and the power supply terminal D are mounted on the other coil frame, the power supply terminal A, the power supply terminal C, the power supply terminal B and the power supply terminal D are arranged in sequence, the connecting end of the power supply terminal A is opposite to the free end of the power supply terminal C, the connecting end of the power supply terminal C is opposite to the connecting end of the power supply terminal B, and the free end of the power supply terminal B is opposite to the connecting end of the power supply terminal D.

[0018] Further, the main plate has a protruding section on the side away from the riveting plate, and the riveting plate is bendably arranged so that the free end is abutted against the edge of the side of the protruding section away from the connecting end.

[0019] Further, the enameled wire riveted on the riveting section is electrically connected to the power supply terminal through resistance welding.

[0020] The technical scheme of the present application provides an electromagnetic coil, which includes a coil frame set, the coil frame set includes power supply terminals and two coil frames in upper and lower butt joint, and each coil frame is mounted with at least two power supply terminals; the power supply terminal includes a riveting section and a pin section, the pin section is connected to the side of the riveting section away from the coil frame, the width of the riveting section is greater than the width of the pin section, the riveting section is used for riveting the enameled wire wound on the coil frame, and the pin sections of the power supply terminals of the coil frame set are equally spaced.

[0021] By riveting the enameled wire through the riveting section, the power supply terminal realizes the fixation and electrical connection of the enameled wire, avoids the risk of virtual welding or the difficulty in ensuring the quality in the prior art, and avoids the case that the high welding temperature easily causes damage to the coil frame, which is conducive to improving the production efficiency on the basis of ensuring the product quality of the coil frame. Further, the width of the riveting section is greater, so that the riveting section can form a gap region capable of firmly riveting the enameled wire, thereby ensuring the reliability and stability of the riveting of the enameled wire. On the other hand, the pin sections of the power supply terminals are equally spaced, and this layout is conducive to matching with the equidistant electrical jack. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part of the present application, which serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0023] Fig. 1 shows a structural schematic diagram of an electromagnetic coil provided by an embodiment of the present application;

[0024] Fig. 2 shows a top view of Fig. 1;

[0025] Fig. 3 shows a structural schematic diagram of one of the coil frames of the electromagnetic coil of Fig. 1;

[0026] Fig. 4 shows a structure diagram of an energizing terminal of the electromagnetic coil of Fig. 1;

[0027] Fig. 5 shows a structure diagram of the energizing terminal of Fig. 4 in a state where a riveting plate is not riveted;

[0028] Fig. 6 shows a structure diagram of the energizing terminal of Fig. 4 in a state where the riveting plate is riveted;

[0029] Fig. 7 shows a structure diagram of an energizing terminal provided by another embodiment of the present application.

[0030] In the above drawings, the following reference signs are used: 10, coil former; 11, frame body; 111, winding groove; 12, mounting seat; 121, notch; 13, terminal mounting block; 20, energizing terminal; 21, riveting section; 211, main plate; 2111, protruding section; 212, riveting plate; 2121, connecting end; 2122, free end; 213, riveting gap; 22, pin section; 231, anti-disengagement section; 2311, inclined groove; 2312, anti-disengagement barb; 2313, anti-disengagement tooth; 232, winding section; 2321, bundling groove; 31, stator housing; 32, stator pole plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] As shown in Figs. 1 to 5, the embodiments of the present application provide an electromagnetic coil, which comprises a coil former set, the coil former set comprising an energizing terminal 20 and two coil formers 10 which are in upper and lower butt joint, and any one coil former 10 is provided with at least two energizing terminals 20; the energizing terminal 20 comprises a riveting section 21 and a pin section 22 which protrude from the coil former 10, the pin section 22 is connected to the side of the riveting section 21 which is away from the coil former 10, the width of the riveting section 21 is greater than the width of the pin section 22, the riveting section 21 is used for riveting the enameled wire wound on the coil former 10, and the pin sections 22 of the plurality of energizing terminals 20 of the coil former set are equally spaced.

[0033] In the embodiment, the energized terminal 20 realizes the fixation and electrical connection of the enameled wire through the riveting of the riveting section 21 to the enameled wire, avoids the risk of virtual welding or the difficulty in ensuring the quality in the prior art when tin soldering is adopted, meanwhile avoids the case that the high welding temperature is easy to cause damage to the coil framework 10, and is conducive to improving the production efficiency on the basis of ensuring the product quality of the coil framework 10. Further, the width of the riveting section 21 is larger, so that the riveting section 21 can form a gap region capable of sufficiently riveting the enameled wire, and ensure the reliability and stability of the riveting of the enameled wire. On the other hand, the pins 22 of the plurality of energized terminals 20 are equally spaced, and this layout is conducive to matching with the equidistant electrical jack.

[0034] As shown in FIG. 2, the interval between the two pins 22 of any two adjacent energized terminals 20 is L. It can be understood that the shape of the pin 22 is matched with the external power supply socket, and in the embodiment, the cross section of each pin 22 is a rectangular surface with a length greater than a width, and the end portion of the pin 22 gradually decreases in radial dimension, so as to be inserted into the external power supply socket.

[0035] It should be noted that the electromagnetic coil further includes a shell group arranged outside the coil framework group, and a stator pole plate group. The shell group includes two stator shells 31, and the two assembled coil frameworks 10 are located in the space surrounded by the two stator shells 31. The stator pole plate group includes two stator pole plates 32, and the two stator pole plates 32 are assembled with the corresponding coil frameworks 10 respectively. The stator shells 31 and the stator pole plates 32 are made of metal material, and the coil frameworks 10 are made of plastic injection. The energized terminal 20 is fixed on the coil framework 10, and the magnetic field generated by the energized enameled wire on the coil framework 10 is converted into a magnetic pole through the magnetic stator shell 31 and the stator pole plate 32, and then converted into a magnetic field for driving the valve body.

[0036] In the embodiment, the two energized terminals 20 of the same coil framework 10 are symmetrically arranged.

[0037] Further, the riveting sections 21 of the plurality of energized terminals 20 arranged on the coil framework group are equally spaced.

[0038] In this way, the adjacent two riveting sections 21 are avoided to be electrically connected and thus cause the short circuit of the electromagnetic coil, which is more conducive to maintaining the stability of the electromagnetic coil under different working conditions, and is conducive to realizing the reasonable layout of the plurality of energized terminals 20 in a compact space.

[0039] As shown in FIGS. 1-3, each coil former 10 is provided with two energizing terminals 20, and the center lines of the four energizing terminals 20 of the coil former set are located on the same plane perpendicular to the axis of the coil former set, and the two energizing terminals 20 of one coil former 10 are alternately arranged with the two energizing terminals 20 of the other coil former 10.

[0040] In this way, the four energizing terminals 20 of the two coil formers 10 are alternately arranged, facilitating fool-proof butt joint of the two coil formers 10, and the coplanar arrangement of the four energizing terminals 20 is conducive to reducing the occupied area of the four energizing terminals 20 while ensuring reasonable arrangement of the multiple energizing terminals 20, thereby realizing reasonable layout of the multiple energizing terminals 20 in a compact space.

[0041] Specifically, the coil former 10 comprises a frame body 11, a mounting seat 12 and a terminal mounting block 13, the frame body 11 is provided with a winding groove 111 for winding the enameled wire, the mounting seat 12 is arranged at the bottom outer periphery of the frame body 11, the bottom of the mounting seat 12 is provided with two terminal mounting blocks 13 spaced from each other, one energizing terminal 20 is arranged on each terminal mounting block 13, the two coil formers 10 are butted against each other, the multiple terminal mounting blocks 13 are sequentially arranged along the length direction of the mounting seat 12, and the two adjacent terminal mounting blocks 13 are not limited in position.

[0042] In the embodiment, the projections of the multiple terminal mounting blocks 13 on the mounting seat 12 sequentially arrange along the length direction of the mounting seat 12 and cover the mounting seat 12, the mounting seat 12 is a plate-shaped seat body, the lower area of the mounting seat 12 is two mounting areas and two matching areas, the two mounting areas and the two matching areas are alternately arranged along the length direction of the mounting seat 12, one terminal mounting block 13 is arranged below each mounting area, when the two coil formers 10 are butted against each other, the two mounting areas of the mounting seat 12 of one coil former 10 correspond to the two matching areas of the mounting seat 12 of the other coil former 10, that is, the two terminal mounting blocks 13 of one coil former 10 are respectively arranged in the two matching areas of the mounting seat 12 of the other coil former 10, and the side walls of the four terminal mounting blocks 13 are limited in position. In this way, the two coil formers 10 are limited in position.

[0043] Preferably, the edge of the mounting seat 12 away from the frame body 11 is provided with two notches 121, and the two notches 121 correspond to the two terminal mounting blocks 13 below the mounting seat 12, respectively. In this way, the notches 121 can realize accommodation and guiding limitation of the enameled wire, which is conducive to ensuring the reliability of the extension and installation of the enameled wire.

[0044] As shown in FIGS. 2-4, the power terminal 20 further comprises a winding segment 232 connected to one end of the riveting segment 21 away from the pin segment 22, the terminal mounting block 13 has a terminal groove for mounting the power terminal 20, and the winding segment 232 is at least partially located outside the terminal groove, at least one side of the winding segment 232 has a bundling groove 2321, and the enameled wire is wound around the winding segment 232 at least once through the bundling groove 2321. The enameled wire is arranged around the bundling groove 2321, which avoids the situation that the winding position of the enameled wire is prone to shift along the length direction of the winding segment 232, and is conducive to improving the reliability of the enameled wire winding installation. Specifically, in the present embodiment, one side of the winding segment 232 of one power terminal 20 has a bundling groove 2321, and the two bundling grooves 2321 of the two power terminals 20 of the same coil former 10 are arranged on the sides of the two winding segments 232 close to each other, and the bundling groove 2321 is an arc-shaped groove.

[0045] It can be understood that in other embodiments not shown in the figures, the two sides of the winding segment 232 of one power terminal 20 can each be provided with a bundling groove 2321, and the number, shape, and other parameters of the bundling groove 2321 can be adjusted according to actual conditions, which will not be exemplified one by one.

[0046] In order to facilitate winding, the connection between the winding segment 232 and the riveting segment 21 is stepped, the stepped connection is distributed on both sides of the power terminal 20 along the length direction, and the bundling groove 2321 is arranged at one or both of the stepped connections. In the present embodiment, the bundling groove 2321 is arranged on one side of the winding segment 232 used to form the stepped connection. The enameled wire is wound around the winding segment 232 at least once through the bundling groove 2321 and the stepped connection between the winding segment 232 and the riveting segment 21.

[0047] Specifically, the power terminal 20 further comprises an anti-disengagement segment 231 connected to one end of the winding segment 232 away from the riveting segment 21, the anti-disengagement segment 231 is inserted into the terminal groove, and the outer periphery of the portion of the anti-disengagement segment 231 inserted into the terminal groove and / or the inner wall of the terminal groove is provided with an anti-disengagement structure to limit the movement of the power terminal 20 in the direction of disengaging from the terminal groove.

[0048] In this way, the power terminal 20 is prevented from being easily disengaged from the terminal groove without affecting the installation of the power terminal 20, thereby ensuring the reliability and stability of the installation of the power terminal 20.

[0049] Specifically, the anti-disengagement structure comprises an anti-disengagement barb 2312 and / or an anti-disengagement tooth 2313 arranged on the anti-disengagement segment 231 or the inner wall of the terminal groove.

[0050] In this way, the anti-disengagement installation of the power terminal 20 can be achieved through the friction or stop of the anti-disengagement barb 2312 and / or the anti-disengagement tooth 2313 with the inner wall of the limiting groove, while the installation of the power terminal 20 is not affected.

[0051] As shown in FIG. 4, at least one side of the anti-escape section 231 has a plurality of inclined grooves 2311, the distance between the center line of any one of the inclined grooves 2311 and the center line of the anti-escape section 231 gradually decreases in the insertion direction of the anti-escape section 231, and the outer periphery of the anti-escape section 231 between any two adjacent inclined grooves 2311 on the same side of the anti-escape section 231 forms an anti-escape barb 2312. In this way, the anti-escape barb 2312 is conveniently formed. In this embodiment, the side of the two anti-escape sections 231 of the same coil former 10 close to each other has a plurality of anti-escape barbs 2312.

[0052] As shown in FIG. 7, another embodiment of the present application provides a power terminal 20 of a coil, which is different from the above-mentioned embodiments in that the outer periphery of the anti-escape section 231 between any two adjacent inclined grooves 2311 on the same side of the anti-escape section 231 forms an anti-escape tooth 2313. In this way, the anti-escape tooth 2313 is conveniently formed. In this embodiment, the two sides of the anti-escape section 231 have a plurality of anti-escape teeth 2313.

[0053] It can be understood that the anti-escape barb 2312 and the anti-escape tooth 2313 can be used in combination, for example, in another embodiment not shown in the figure, one side of the anti-escape section 231 forms a plurality of anti-escape barbs 2312, and the other side of the anti-escape section 231 forms a plurality of anti-escape teeth 2313.

[0054] As shown in FIGS. 4 to 6, the riveting section 21 includes a main plate 211 and a riveting plate 212, the main plate 211 is connected to the pin section 22, the riveting plate 212 has an opposite connection end 2121 and a position-adjustable free end 2122, the connection end 2121 of the riveting plate 212 is connected to one side of the main plate 211, and the riveting plate 212 is bendably arranged to the main plate 211 to form a riveting gap 213 for riveting the enameled wire between the riveting plate 212 and the main plate 211.

[0055] In this way, the riveting gap 213 is conveniently formed, and the riveting plate 212 is convenient for riveting the enameled wire. In this embodiment, the main plate 211 is located between the pin section 22 and the winding section 232, the inner side of the main plate 211 is flush with the inner side of the pin section 22, and the connection end 2121 of the riveting plate 212 is connected to the inner side of the main plate 211. FIGS. 5 and 6 respectively show a structure schematic diagram of the power terminal 20 when the riveting plate 212 is in an un-riveted state and a structure schematic diagram of the power terminal 20 when the riveting plate 212 is in a riveted state.

[0056] As shown in FIGS. 1-3, the two energized terminals 20 located in the same coil former 10 are symmetrically arranged, and the two connecting ends 2121 of the two riveting plates 212 are respectively connected to the sides of the two main plates 211 close to each other. Specifically, as shown in FIG. 3, the energized terminals 20 include an energized terminal A (the right energized terminal 20) and an energized terminal B (the left energized terminal 20), the energized terminal A and the energized terminal B are installed in the same coil former 10, the two riveting segments 21 corresponding to the energized terminal A and the energized terminal B are symmetrically arranged, and the two connecting ends 2121 corresponding to the energized terminal A and the energized terminal B are oppositely arranged. In this way, interference between the multiple energized terminals 20 after the two coil formers 10 are installed together can be avoided.

[0057] Further, for the two adjacent energized terminals 20 located on the same side of the coil former group, the connecting end 2121 of one riveting plate 212 and the free end 2122 of the other riveting plate 212 are respectively connected to the sides of the two main plates 211 close to each other. Specifically, as shown in FIGS. 1 and 2, the energized terminals 20 further include an energized terminal C (the third energized terminal 20 from left to right) and an energized terminal D (the first energized terminal 20 from left to right), wherein the energized terminal A and the energized terminal B are installed in one of the coil formers 10, the energized terminal C and the energized terminal D are installed in the other coil former 10, the energized terminal A (the fourth energized terminal 20 from left to right), the energized terminal C (the third energized terminal 20 from left to right), the energized terminal B (the second energized terminal 20 from left to right), and the energized terminal D (the first energized terminal 20 from left to right) are arranged in sequence, the connecting end 2121 of the energized terminal A is opposite to the free end 2122 of the energized terminal C, the connecting end 2121 of the energized terminal C is opposite to the connecting end 2121 of the energized terminal B, and the free end 2122 of the energized terminal B is opposite to the connecting end 2121 of the energized terminal D. In this way, the pin segments 22 of the multiple energized terminals 20 arranged on the coil former group are equally spaced, and interference between the multiple energized terminals 20 after the two coil formers 10 are installed together can be further avoided.

[0058] Specifically, the side of the main plate 211 away from the riveting plate 212 has a protruding segment 2111, and the riveting plate 212 is bendable so that the free end 2122 abuts against the edge of the side of the protruding segment 2111 away from the connecting end 2121. In this way, the width of the main plate 211 is larger, which is more conducive to the formation of the riveting area and the effective riveting of the enameled wire by the riveting plate 212. It can be understood that the connection between the protruding segment 2111 and the winding segment 232 is stepped, which is used for winding the enameled wire.

[0059] It should be noted that in the embodiment, the main plate 211 and the riveting plate 212 are both rectangular strip plate bodies, and the size of the riveting gap 213 formed when the free end 2122 abuts against the main plate 211 gradually increases in the direction in which the free end 2122 faces the connecting end 2121. In the embodiment, the side with the larger size of the riveting gap 213 is arranged on the same side as the bundling groove 2321, which is conducive to the effective riveting of the enameled wire drawn out of the bundling groove 2321.

[0060] Optionally, the outer periphery of the free end 2122 of the riveting plate 212 is rounded, and the connection position of the main plate 211 with the pin segment 22 and the winding segment 232 can also be rounded.

[0061] The enameled wire riveted on the riveting segment 21 is electrically connected to the current-carrying terminal 20 through resistance welding.

[0062] In the embodiment, the enameled wire is riveted on the current-carrying terminal 20 through the riveting segment 21, and then the enameled film is melted through high-temperature resistance welding to realize the welding of the enameled wire and the current-carrying terminal 20. Compared with the case of directly using tin soldering to weld the enameled wire and the current-carrying terminal 20 in the prior art, such an arrangement will not cause the risk of affecting the quality such as welding slag and false welding, and compared with tin soldering, resistance welding also avoids the case that the welding temperature is too high and is easy to cause damage to the coil skeleton, which is conducive to ensuring the product quality of the coil skeleton.

[0063] It can be understood that the width of the riveting segment 21 is larger, which is used for sufficiently and firmly clamping the enameled wire and also provides sufficient width for melting the enameled wire through resistance welding. The reasonable design and layout of the plurality of current-carrying terminals 20 are also conducive to the use of resistance welding.

[0064] Optionally, the outer layer of at least the riveting segment 21 of the current-carrying terminal 20 can be plated with tin.

[0065] In summary, the present application provides an electromagnetic coil, two current-carrying terminals 20 of the same coil skeleton 10 are a start winding side terminal and an end winding side terminal, and the side of the start winding side terminal and the end winding side terminal close to each other is the inner side of the current-carrying terminal 20. The process sequence for winding the enameled wire includes:

[0066] Step 1: first fix the enameled wire head inside the riveting segment 21 of the start winding side terminal (rivet and press the enameled wire), and the wire head extends from the side away from the coil skeleton 10 and is located at the outer side root of the riveting segment 21;

[0067] Step 2: after winding the enameled wire at least one circle in the bundling groove 2321 of the start winding side terminal in the counterclockwise direction, draw it out from the inside;

[0068] Step 3: The enameled wire is introduced into the winding groove 111 of the frame 11 through the gap 121 of the mounting seat 12 of the coil framework 10, and is wound in the winding groove 111 in the counterclockwise direction until the required number of turns, and then is introduced out of the winding groove 111 from the other side of the mounting seat 12 to the bundling groove 2321 of the terminal on the terminal side;

[0069] Step 4: The enameled wire is bundled in the terminal bundling groove 2321 on the terminal side in the counterclockwise direction for at least one turn;

[0070] Step 5: The enameled wire is introduced out of the terminal riveting section 21 on the terminal side;

[0071] Step 6: The terminal riveting section 21 on the terminal side is riveted to press and fix the enameled wire, and the enameled wire is disconnected from the root of the riveting section 21 on the terminal side;

[0072] Step 7: Go to the next process, use the electrode of the resistance welding equipment to press the riveting sections 21 of the terminal on the terminal side and the terminal on the terminal side at the same time, and discharge to perform resistance welding, so that the riveting section 21 generates high temperature to melt the paint film of the enameled wire, so that the enameled wire and the terminal 20 realize electrical connection.

[0073] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electromagnetic coil, characterized in that, include: The coil frame assembly includes a power terminal (20) and two coil frames (10) connected vertically, wherein each coil frame (10) is equipped with at least two power terminals (20); The energized terminal (20) includes a riveting section (21) and a pin section (22) protruding from the coil frame (10). The pin section (22) is connected to the side of the riveting section (21) away from the coil frame (10). The width of the riveting section (21) is greater than the width of the pin section (22). The riveting section (21) is used to rivet the enameled wire wound on the coil frame (10). The pin sections (22) of the multiple energized terminals (20) of the coil frame group are evenly spaced.

2. The electromagnetic coil according to claim 1, characterized in that, The riveted sections (21) of the plurality of energized terminals (20) of the coil frame assembly are equally spaced.

3. The electromagnetic coil according to claim 1, characterized in that, Each of the coil frames (10) is equipped with two power terminals (20). The center lines of the four power terminals (20) of the coil frame group are located on the same plane perpendicular to the axis of the coil frame group. The two power terminals (20) of one coil frame (10) are alternately arranged with the two power terminals (20) of another coil frame (10).

4. The electromagnetic coil according to claim 3, characterized in that, The coil frame (10) includes a frame (11), a mounting base (12), and terminal mounting blocks (13). The frame (11) has a winding groove (111) for winding the enameled wire. The mounting base (12) is located on the bottom outer periphery of the frame (11). Two terminal mounting blocks (13) are spaced apart from each other at the bottom of the mounting base (12). A power-conducting terminal (20) is installed on any one of the terminal mounting blocks (13). The two coil frames (10) are connected to each other. A plurality of terminal mounting blocks (13) are arranged sequentially along the length direction of the mounting base (12). Any two adjacent terminal mounting blocks (13) are mutually constrained.

5. The electromagnetic coil according to claim 4, characterized in that, The mounting base (12) has two notches (121) on the edge opposite to the frame (11), and the two notches (121) are respectively provided for the two terminal mounting blocks (13) below the mounting base (12).

6. The electromagnetic coil according to claim 1, characterized in that, The energized terminal (20) also includes a winding segment (232) connected to one end of the riveting segment (21) away from the pin segment (22). The coil frame (10) includes a terminal mounting block (13) having a terminal slot for mounting the energized terminal (20). The winding segment (232) is at least partially located outside the terminal slot. At least one side of the winding segment (232) has a binding groove (2321). The enameled wire is wound around the winding segment (232) at least once through the binding groove (2321).

7. The electromagnetic coil according to claim 6, characterized in that, The connection between the winding segment (232) and the riveting segment (21) is stepped, and the stepped connection is distributed on both sides of the power terminal (20) along the length direction. The binding groove (2321) is provided at one or two of the stepped connection points.

8. The electromagnetic coil according to claim 6, characterized in that, The energized terminal (20) also includes an anti-detachment section (231) connected to the end of the winding section (232) away from the riveting section (21). The anti-detachment section (231) is inserted into the terminal slot. The outer periphery of the portion of the anti-detachment section (231) inserted into the terminal slot and / or the inner wall of the terminal slot are provided with an anti-detachment structure to restrict the movement of the energized terminal (20) in the direction of detachment from the terminal slot.

9. The electromagnetic coil according to claim 8, characterized in that, The anti-detachment structure includes anti-detachment barbs (2312) and / or anti-detachment teeth (2313) disposed on the anti-detachment section (231) or the inner wall of the terminal slot.

10. The electromagnetic coil according to claim 9, characterized in that, The anti-detachment section (231) has at least one side having a plurality of inclined grooves (2311), the distance between the center line of any one of the inclined grooves (2311) and the center line of the anti-detachment section (231) gradually decreases in the insertion direction of the anti-detachment section (231), and an anti-detachment barb (2312) or an anti-detachment tooth (2313) is formed on the outer periphery of the anti-detachment section (231) between any two adjacent inclined grooves (2311) on the same side of the anti-detachment section (231).

11. The electromagnetic coil according to claim 1, characterized in that, The riveting section (21) includes a main board (211) and a riveting plate (212). The main board (211) is connected to the pin section (22). The riveting plate (212) has a connecting end (2121) and a free end (2122) that are arranged opposite to each other. The connecting end (2121) of the riveting plate (212) is connected to one side of the main board (211). The riveting plate (212) is bent toward the main board (211) so that a riveting gap (213) for riveting the enameled wire is formed between the riveting plate (212) and the main board (211).

12. The electromagnetic coil according to claim 11, characterized in that, The power-on terminal (20) includes power-on terminal A and power-on terminal B. Power-on terminal A and power-on terminal B are installed on the same coil frame (10). The two riveting sections (21) corresponding to power-on terminal A and power-on terminal B are symmetrically arranged. The two connecting ends (2121) corresponding to power-on terminal A and power-on terminal B are arranged opposite to each other.

13. The electromagnetic coil according to claim 12, characterized in that, The energized terminal (20) further includes energized terminal C and energized terminal D. The energized terminal A and the energized terminal B are installed on one of the coil frames (10), and the energized terminal C and the energized terminal D are installed on the other coil frame (10). The energized terminal A, the energized terminal C, the energized terminal B, and the energized terminal D are arranged in sequence. The connecting end (2121) of the energized terminal A is opposite to the free end (2122) of the energized terminal C, the connecting end (2121) of the energized terminal C is opposite to the connecting end (2121) of the energized terminal B, and the free end (2122) of the energized terminal B is opposite to the connecting end (2121) of the energized terminal D.

14. The electromagnetic coil according to claim 11, characterized in that, The main board (211) has a protruding section (2111) on the side opposite to the riveting plate (212), and the riveting plate (212) is bendably arranged so that the free end (2122) abuts against the edge of the protruding section (2111) on the side opposite to the connecting end (2121).

15. The electromagnetic coil according to claim 1, characterized in that, The enameled wire crimped to the riveting section (21) is electrically connected to the power terminal (20) by resistance welding.

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