Electromagnetic coil

Abstract

The utility model provides an electromagnetic coil, which comprises a coil framework group, the coil framework group comprises electrifying terminals and two coil frameworks which are butted up and down, and any one coil framework is provided with at least two electrifying terminals; each electrifying terminal comprises a riveting section protruding out of the coil framework and a pin section, the pin section is connected with one side, deviating from the coil framework, of the riveting section, the width of the riveting section is larger than that of the pin section, the riveting section is used for riveting an enameled wire wound on the coil framework, and the pin sections of the plurality of electrifying terminals arranged on the coil framework group are arranged at equal intervals. According to the technical scheme provided by the utility model, the problem that the product quality is easily influenced when the enameled wire and the electrified terminal are connected through tin soldering in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic coils, in particular to an electromagnetic coil. Background Art

[0002] In the prior art, the soldering process is usually used to connect the end of the enameled wire with the power terminal, but there is a risk of cold soldering, and the generated welding slag, tin ash, etc. will also affect the welding uniformity and welding quality. At the same time, if the soldering temperature is too high, it is easy to damage the coil skeleton, thereby affecting the product quality. Utility Model Content

[0003] The utility model provides an electromagnetic coil to solve the problem in the prior art that soldering easily affects product quality.

[0004] In order to solve the above problems, the utility model provides an electromagnetic coil, including a coil skeleton group, the coil skeleton group includes a power-carrying terminal and two coil skeletons connected up and down, any coil skeleton is installed with at least two power-carrying terminals; the power-carrying terminal includes a riveted section and a pin section protruding from the coil skeleton, the pin section is connected to the side of the riveted section away from the coil skeleton, the width of the riveted section is greater than the width of the pin section, the riveted section is used for riveting the enameled wire wound on the coil skeleton, and the pin sections of multiple power-carrying terminals arranged on the coil skeleton group are equally spaced.

[0005] Furthermore, the riveted sections of the plurality of power terminals arranged on the coil skeleton group are spaced at equal intervals.

[0006] Furthermore, any coil frame is equipped with two power terminals, the center lines of the four power terminals of the coil frame group are located on the same radial plane of the coil frame group, and the two power terminals of one coil frame are alternately arranged with the two power terminals of another coil frame.

[0007] Furthermore, the coil skeleton includes 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 at the bottom periphery of the frame body, and two terminal mounting blocks spaced apart from each other are arranged at the bottom of the mounting seat. An energized terminal is installed on any one of the terminal mounting blocks, the two coil skeletons are butt-jointed with each other, the projections of the multiple terminal mounting blocks on the mounting seat are arranged sequentially along the length direction of the mounting seat and cover the mounting seat, and any two adjacent terminal mounting blocks are limitedly matched.

[0008] Furthermore, the edge of the mounting seat facing away from the frame body has two notches, and the two notches are respectively arranged corresponding to the two terminal mounting blocks below the mounting seat.

[0009] Furthermore, the power-carrying terminal also includes a winding segment connected to one end of the riveted segment away from the pin segment, the coil skeleton includes a terminal mounting block, the terminal mounting block has a terminal groove for mounting the power-carrying 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 at least once through the bundling groove.

[0010] Furthermore, the connection between the winding section and the riveted section is stepped, and the enameled wire is wound around the winding section at least once through the bundling groove and the stepped connection between the winding section and the riveted section.

[0011] Furthermore, the power-on terminal also includes an anti-detachment section connected to one end of the winding section away from the riveted section, the anti-detachment section is inserted into the terminal slot, and the outer periphery of the part of the anti-detachment section inserted into the terminal slot and / or the inner wall of the terminal slot are provided with an anti-detachment structure to limit the movement of the power-on terminal in the direction of detaching from the terminal slot.

[0012] Furthermore, the anti-slip structure includes anti-slip barbs and / or anti-slip teeth arranged on the anti-slip section or the inner wall of the terminal slot.

[0013] Furthermore, at least one side of the anti-slip segment has a plurality of inclined grooves, and the distance between the center line of the inclined groove and the center line of the anti-slip segment gradually decreases in the insertion direction of the anti-slip segment, and an anti-slip barb or anti-slip tooth is formed on the outer periphery of the anti-slip segment between any two adjacent inclined grooves on the same side of the anti-slip segment.

[0014] Furthermore, the riveting section includes a main board and a riveting plate, the main board is connected to the pin section, the riveting plate has a connecting end and a free end that are relatively arranged, the connecting end of the riveting plate is connected to one side of the main board, and the free end is bendably arranged toward the main board to form a riveting gap for riveting the power-on terminal when the free end abuts against the main board.

[0015] Furthermore, the power-on terminal includes power-on terminal A and power-on terminal B, which are installed on the same coil frame, and the two riveted sections corresponding to power-on terminal A and power-on terminal B are symmetrically arranged, and the two connecting ends corresponding to power-on terminal A and power-on terminal B are relatively arranged.

[0016] Furthermore, the power-on terminals also include power-on terminals C and power-on terminals D, power-on terminals A and power-on terminals B are installed on one of the coil frames, power-on terminals C and power-on terminals D are installed on the other coil frame, power-on terminals A, power-on terminals C, power-on terminals B, and power-on terminals D are arranged in sequence, the connecting end of power-on terminal A is opposite to the free end of power-on terminal B, the connecting end of power-on terminal B is opposite to the connecting end of power-on terminal C, and the free end of power-on terminal C is opposite to the connecting end of power-on terminal D.

[0017] Furthermore, the main board has a protruding section on a side facing away from the riveted plate, and the free end is bendably arranged and abuts against an edge of the protruding section on a side facing away from the connecting end.

[0018] Furthermore, the enameled wire riveted to the riveted section is electrically connected to the power terminal through resistance welding.

[0019] Applying the technical solution of the utility model, there is provided an electromagnetic coil, comprising a coil skeleton group, the coil skeleton group comprising a power-carrying terminal and two coil skeletons butted against each other up and down, any one of the coil skeletons being equipped with at least two power-carrying terminals; the power-carrying terminal comprising a riveted section and a pin section protruding from the coil skeleton, the pin section being connected to a side of the riveted section away from the coil skeleton, the width of the riveted section being greater than the width of the pin section, the riveted section being used for riveting the enameled wire wound on the coil skeleton, the pin sections of the multiple power-carrying terminals arranged on the coil skeleton group being equally spaced.

[0020] With this solution, the power-on terminal rivets the enameled wire through the riveting section to achieve fixation and electrical connection of the enameled wire, avoiding the risk of cold soldering or the difficulty in ensuring quality when using soldering in the prior art, and avoiding the situation where the coil skeleton is easily damaged by excessive welding temperature, which is beneficial to improving production efficiency on the basis of ensuring the product quality of the coil skeleton. Furthermore, the width of the riveting section is larger, so that the riveting section can form a gap area that can fully rivet the enameled wire firmly, ensuring the reliability and stability of the riveting of the enameled wire. On the other hand, the pin sections of multiple power-on terminals are spaced at equal intervals. This layout method is conducive to matching with equidistant electrical sockets in the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of an electromagnetic coil provided in an embodiment of the utility model is shown;

[0023] Figure 2 Shows Figure 1 A top view of

[0024] Figure 3 Shows Figure 1 A schematic diagram of the structure of one of the coil skeletons of the electromagnetic coil;

[0025] Figure 4 Shows Figure 1 A schematic diagram of the structure of the power supply terminal of the electromagnetic coil;

[0026] Figure 5 Shows Figure 4 A schematic diagram of the structure of the energized terminal when the riveted plate is in an un-riveted state;

[0027] Figure 6 Shows Figure 4 A schematic diagram of the structure of the energized terminal when the riveted plate is in a riveted state;

[0028] Figure 7 A schematic structural diagram of a power-on terminal provided in another embodiment of the utility model is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Coil skeleton; 11. Frame; 111. Winding groove; 12. Mounting seat; 121. Notch; 13. Terminal mounting block;

[0031] 20, power-on terminal; 21, riveting section; 211, main board; 2111, raised section; 212, riveting plate; 2121, connection end; 2122, free end; 213, riveting gap; 22, pin section; 231, anti-slip section; 2311, inclined groove; 2312, anti-slip barb; 2313, anti-slip teeth; 232, winding section; 2321, bundling groove;

[0032] 31. Stator housing; 32. Stator pole plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] like Figures 1 to 5 As shown, an embodiment of the utility model provides an electromagnetic coil, including a coil skeleton group, the coil skeleton group includes a power terminal 20 and two coil skeletons 10 connected to each other up and down, any coil skeleton 10 is installed with at least two power terminals 20; the power terminal 20 includes a riveted section 21 and a pin section 22 protruding from the coil skeleton 10, the pin section 22 is connected to the side of the riveted section 21 away from the coil skeleton 10, the width of the riveted section 21 is greater than the width of the pin section 22, the riveted section 21 is used for riveting the enameled wire wound on the coil skeleton 10, and the pin sections 22 of the multiple power terminals 20 arranged on the coil skeleton group are equally spaced.

[0035] In this embodiment, the power terminal 20 fixes and electrically connects the enameled wire by riveting the enameled wire through the riveting section 21, avoiding the risk of cold soldering or the difficulty in ensuring the quality when using soldering in the prior art, and avoiding the situation where the welding temperature is too high and easily damages the coil skeleton 10, which is beneficial to improving production efficiency on the basis of ensuring the product quality of the coil skeleton 10. Furthermore, the width of the riveting section 21 is larger, so that the riveting section 21 can form a gap area that can fully rivet the enameled wire firmly, ensuring the reliability and stability of the riveting of the enameled wire. On the other hand, the pin sections 22 of multiple power terminals 20 are spaced at equal intervals, and this layout is conducive to matching with equidistant electrical sockets in the outside world.

[0036] Among them, Figure 2 As shown, the interval between the two pin segments 22 of any two adjacent power terminals 20 is L. It can be understood that the shape of the pin segment 22 is adapted to the external power socket. In this embodiment, the cross-section of each pin segment 22 is a rectangular surface with a length greater than a width, and the radial dimension of the end of the pin segment 22 is gradually reduced to facilitate insertion into the external power socket.

[0037] It should be noted that the electromagnetic coil also includes a shell group and a stator pole plate group arranged on the periphery of the coil skeleton group. The shell group includes two stator shells 31, and the two assembled coil skeletons 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 respectively assembled with their corresponding coil skeletons 10. Among them, the stator shell 31 and the stator pole plates 32 are made of metal materials, and the coil skeleton 10 is made of plastic injection molding. The power terminal 20 is fixed on the coil skeleton 10, and the magnetic field generated by the enameled wire wound on the coil skeleton 10 after being energized is converted into magnetic poles through the magnetic stator shell 31 and the stator pole plates 32, and then converted into a magnetic field that drives the valve body.

[0038] In this embodiment, the two power terminals 20 of the same coil bobbin 10 are symmetrically arranged.

[0039] Furthermore, the riveted sections 21 of the plurality of power terminals 20 disposed on the coil skeleton assembly are spaced at equal intervals.

[0040] This arrangement avoids the situation where two adjacent riveted sections 21 are electrically connected and thus cause a short circuit in the electromagnetic coil, helps to maintain the stability of the electromagnetic coil under different working conditions, and is conducive to the reasonable layout of multiple power terminals 20 in a compact space.

[0041] like Figures 1 to 3As shown, any coil frame 10 is equipped with two power terminals 20, and the center lines of the four power terminals 20 of the coil frame group are located on the same radial plane of the coil frame group, and the two power terminals 20 of one coil frame 10 are alternately arranged with the two power terminals 20 of another coil frame 10.

[0042] In this way, the four power terminals 20 of the two coil skeletons 10 are arranged alternately, which is convenient for fool-proof docking of the two coil skeletons 10, and the four power terminals 20 are arranged on the same plane, which is beneficial to reduce the occupied area of ​​the four power terminals 20 on the basis of ensuring the reasonable arrangement of the multiple power terminals 20, thereby realizing the reasonable layout of the multiple power terminals 20 in a compact space.

[0043] Specifically, the coil skeleton 10 includes a frame 11, a mounting seat 12 and a terminal mounting block 13. The frame 11 has a winding groove 111 for winding the enameled wire. The mounting seat 12 is arranged on the bottom periphery of the frame 11. Two terminal mounting blocks 13 spaced apart from each other are arranged at the bottom of the mounting seat 12. A power-carrying terminal 20 is installed on any one of the terminal mounting blocks 13. The two coil skeletons 10 are butt-jointed with each other. The projections of the multiple terminal mounting blocks 13 on the mounting seat 12 are arranged sequentially along the length direction of the mounting seat 12 and cover the mounting seat 12. Any two adjacent terminal mounting blocks 13 are disengaged from the limit fit.

[0044] In this embodiment, the mounting seat 12 is a plate-shaped seat body, and the area below it is two mounting areas and two matching areas, which are alternately arranged along the length direction of the mounting seat 12, and a terminal mounting block 13 is arranged below each mounting area. When two coil skeletons 10 are docked with each other, the two mounting areas of the mounting seat 12 of one coil skeleton 10 correspond to the two matching areas of the mounting seat 12 of the other coil skeleton 10, that is, the two terminal mounting blocks 13 of one coil skeleton 10 will be respectively installed in the two matching areas of the mounting seat 12 of the other coil skeleton 10, and the side walls of the four terminal mounting blocks 13 are limited and matched in pairs. This arrangement facilitates the limited docking of the two coil skeletons 10.

[0045] Preferably, the edge of the mounting seat 12 facing away from the frame 11 has two notches 121, and the two notches 121 are respectively arranged corresponding to the two terminal mounting blocks 13 below the mounting seat 12. In this way, the notches 121 can be used to accommodate and guide the enameled wire, which is conducive to ensuring the reliability of the extension and installation of the enameled wire.

[0046] like Figures 2 to 4As shown, the power terminal 20 also includes 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 slot for mounting the power 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 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 wound around the bundling groove 2321 to avoid the situation that the winding position of the enameled wire is easy to move along the length direction of the winding segment 232, which is conducive to improving the reliability of the winding installation of the enameled wire. Specifically, in this embodiment, one side of the winding segment 232 of a power terminal 20 has a bundling groove 2321, and the two bundling grooves 2321 of the two power terminals 20 of the same coil skeleton 10 are respectively arranged on the side of the two winding segments 232 close to each other, and the bundling groove 2321 is an arc groove.

[0047] It is understandable that in other embodiments not shown in the figures, bundling grooves 2321 can be set on both sides of the winding segment 232 of an electric terminal 20, and the number, shape and other parameters of the bundling grooves 2321 can be adjusted according to actual conditions, which are not listed here one by one.

[0048] To facilitate winding, the connection between the winding segment 232 and the riveted segment 21 is stepped, and 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 riveted segment 21 .

[0049] Specifically, the power-on terminal 20 also includes an anti-detachment segment 231 connected to one end of the winding segment 232 away from the riveting segment 21. The anti-detachment segment 231 is inserted into the terminal slot. The outer periphery of the part of the anti-detachment segment 231 inserted into the terminal slot and / or the inner wall of the terminal slot are provided with an anti-detachment structure to limit the movement of the power-on terminal 20 in the direction of detaching from the terminal slot.

[0050] Such a configuration is beneficial to prevent the power terminal 20 from being easily dislodged from the terminal slot without affecting the installation of the power terminal 20, thereby ensuring the reliability and stability of the installation of the power terminal 20.

[0051] Specifically, the anti-slip structure includes an anti-slip barb 2312 and / or an anti-slip tooth 2313 arranged on the anti-slip section 231 or the inner wall of the terminal slot.

[0052] With such arrangement, the anti-dropout installation of the power terminal 20 can be achieved through the friction or stop between the anti-dropout barb 2312 and / or the anti-dropout tooth 2313 and the inner wall of the limiting groove, while the installation of the power terminal 20 is not affected.

[0053] like Figure 4As shown, at least one side of the anti-slip section 231 has a plurality of inclined grooves 2311, and the distance between the center line of the inclined groove 2311 and the center line of the anti-slip section 231 gradually decreases in the insertion direction of the anti-slip section 231, and the outer periphery of the anti-slip section 231 between any two adjacent inclined grooves 2311 on the same side of the anti-slip section 231 forms an anti-slip barb 2312. This arrangement is convenient for processing and forming the anti-slip barb 2312. In the present embodiment, the two anti-slip sections 231 of the same coil skeleton 10 have a plurality of anti-slip barbs 2312 on one side close to each other.

[0054] like Figure 7 As shown, another embodiment of the utility model provides a power-on terminal 20 of an electromagnetic coil, which is different from the above embodiment in that an anti-slipping tooth 2313 is formed on the periphery of the anti-slipping section 231 between any two adjacent inclined grooves 2311 on the same side of the anti-slipping section 231. This arrangement facilitates the processing and forming of the anti-slipping tooth 2313. In this embodiment, a plurality of anti-slipping teeth 2313 are provided on both sides of the anti-slipping section 231.

[0055] It is understandable that the anti-slip barbs 2312 and the anti-slip teeth 2313 can be used in combination. For example, in other embodiments not shown in the figure, a plurality of anti-slip barbs 2312 are formed on one side of the anti-slip segment 231 , and a plurality of anti-slip teeth 2313 are formed on the other side of the anti-slip segment 231 .

[0056] like Figures 4 to 6 As shown, the riveted section 21 includes a main board 211 and a riveted plate 212. The main board 211 is connected to the pin section 22. The riveted plate 212 has a connecting end 2121 and a free end 2122 that are relatively arranged. The connecting end 2121 of the riveted plate 212 is connected to one side of the main board 211, and the free end 2122 is bendably arranged toward the main board 211 to form a riveting gap 213 for riveting the power terminal 20 when the free end 2122 abuts against the main board 211.

[0057] This arrangement facilitates the formation of the riveting gap 213 and the riveting of the enameled wire by the riveting plate 212. In this embodiment, the main board 211 is located between the pin segment 22 and the winding segment 232, the inner side of the main board 211 is flush with the inner side of the pin segment 22, and the connecting end 2121 of the riveting plate 212 is connected to the inner side of the main board 211. Figure 5 and Figure 6 The figures are respectively a schematic diagram of the structure of the power terminal 20 when the riveting plate 212 is in a non-riveted state, and a schematic diagram of the structure of the power terminal 20 when the riveting plate 212 is in a riveted state.

[0058] like Figures 1 to 3As shown, the two power terminals 20 located on the same coil frame 10 are symmetrically arranged, and the two connection ends 2121 of the two riveted plates 212 are respectively connected to the sides of the two main boards 211 that are close to each other. Specifically, the power terminals 20 include power terminals A and power terminals B, which are installed on the same coil frame 10, and the two riveted sections 21 corresponding to the power terminals A and the power terminals B are symmetrically arranged, and the two connection ends 2121 corresponding to the power terminals A and the power terminals B are arranged oppositely. This arrangement is conducive to avoiding interference between multiple power terminals 20 after the two coil frames 10 are installed together.

[0059] Further, for two adjacent power terminals 20 located on the same side of the coil skeleton group, the connection end 2121 of one riveted plate 212 and the free end 2122 of the other riveted plate 212 are respectively connected to the relatively close side of the two main boards 211. Specifically, the power terminal 20 also includes a power terminal C and a power terminal D, wherein the power terminal A and the power terminal B are installed on one of the coil skeletons 10, and the power terminal C and the power terminal D are installed on the other coil skeleton 10, and the power terminal A, the power terminal C, the power terminal B, and the power terminal D are arranged in sequence, and the connection end 2121 of the power terminal A is opposite to the free end 2122 of the power terminal B, the connection end 2121 of the power terminal B is opposite to the connection end 2121 of the power terminal C, and the free end 2122 of the power terminal C is opposite to the connection end 2121 of the power terminal D. Such an arrangement is conducive to equidistant spacing of the pin sections 22 of the multiple power terminals 20 arranged on the coil skeleton group, and further avoids interference between the multiple power terminals 20 after the two coil skeletons 10 are installed together.

[0060] Specifically, the main board 211 has a protruding section 2111 on one side away from the riveting plate 212, and the free end 2122 is bendable and abuts against the edge of the protruding section 2111 on the side away from the connecting end 2121. This arrangement makes the width of the main board 211 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 section 2111 and the winding section 232 is stepped, which is used to wind the enameled wire.

[0061] It should be noted that, in this embodiment, both the main board 211 and the riveted board 212 are rectangular strip-shaped plates, and the size of the riveting gap 213 formed when the free end 2122 abuts against the main board 211 gradually increases in the direction from the free end 2122 toward the connecting end 2121. In this embodiment, the side with a 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 led out of the bundling groove 2321.

[0062] Optionally, the outer periphery of the free end 2122 of the riveted plate 212 is rounded, and the connection positions between the main board 211 and the pin segment 22 and the winding segment 232 may also be rounded.

[0063] The enameled wire riveted to the riveting section 21 is electrically connected to the power terminal 20 by resistance welding.

[0064] In this embodiment, the enameled wire is riveted onto the power-carrying terminal 20 by the riveting section 21, and then the paint film is melted by resistance welding at high temperature to realize welding of the enameled wire and the power-carrying terminal 20. Compared with the prior art in which the enameled wire and the power-carrying terminal 20 are directly welded by tin soldering, such a setting will not cause the risk of welding slag, cold welding and other risks that affect the quality. At the same time, compared with tin soldering, resistance welding also avoids the situation in which the welding temperature is too high and easily causes damage to the coil skeleton, which is conducive to ensuring the product quality of the coil skeleton.

[0065] It is understandable that the width of the riveted section 21 is larger, which is used to fully and firmly clamp the enameled wire and provide enough width for melting the enameled wire by resistance welding. The above-mentioned reasonable design and layout of the multiple power terminals 20 are also conducive to the use of resistance welding.

[0066] Optionally, at least the outer layer of the riveted section 21 of the power terminal 20 may be tin-plated.

[0067] In summary, the utility model provides an electromagnetic coil, wherein two power terminals 20 of the same coil skeleton 10 are respectively a start winding side terminal and an end winding side terminal, and the side where the start winding side terminal and the end winding side terminal are close to each other is the inner side of the power terminal 20, and the process sequence for winding the enameled wire includes:

[0068] Step 1: First, fix the enameled wire end on the inner side of the riveted section 21 of the terminal on the start winding side (press the enameled wire after riveting), and the wire end extends from the side away from the coil frame 10 and is located at the outer root of the riveted section 21;

[0069] Step 2: Bundle the enameled wire in the bundling groove 2321 of the terminal on the start-winding side for at least one turn counterclockwise and then lead it out from the inside;

[0070] Step 3: The enameled wire is placed close to the mounting seat 12 of the coil frame 10 and introduced into the winding groove 111 of the frame 11 through the notch 121, and is wound in the winding groove 111 in a counterclockwise direction until the required number of turns is reached, and then the enameled wire is led out from the other side of the winding groove 111 close to the mounting seat 12 to the bundling groove 2321 of the terminal on the final winding side;

[0071] Step 4: Bundle the enameled wire in the terminal bundling groove 2321 on the end winding side in a counterclockwise direction for at least one turn;

[0072] Step 5: The enameled wire is led out from the inner side of the terminal riveting section 21 at the end winding side;

[0073] Step 6: Perform a riveting operation on the terminal riveting section 21 on the final winding side to press and fix the enameled wire, and the enameled wire is cut off from the outer root of the riveting section 21;

[0074] Step 7: Go to the next process, use the resistance welding equipment electrode to simultaneously press the riveted section 21 of the start-roll side terminal and the end-roll side power-carrying terminal and discharge to perform resistance welding, so that the riveted section 21 generates a high temperature to melt the paint film of the enameled wire, thereby achieving electrical connection between the enameled wire and the power-carrying terminal 20.

[0075] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0076] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0077] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0078] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0079] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0080] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electromagnetic coil, characterized in that: include: A coil frame group, comprising a power-carrying terminal (20) and two coil frames (10) butted against each other, wherein at least two of the power-carrying terminals (20) are installed on any one of the coil frames (10); The power-on terminal (20) comprises a riveted section (21) protruding from the coil frame (10) and a pin section (22); the pin section (22) is connected to a side of the riveted section (21) facing away from the coil frame (10); the width of the riveted section (21) is greater than the width of the pin section (22); the riveted section (21) is used for riveting the enameled wire wound around the coil frame (10); the pin sections (22) of the multiple power-on terminals (20) arranged on the coil frame group are spaced at equal intervals.

2. The electromagnetic coil according to claim 1, characterized in that The riveted sections (21) of the plurality of power terminals (20) arranged on the coil skeleton group are spaced at equal intervals.

3. The electromagnetic coil according to claim 1, characterized in that Any one of the coil skeletons (10) is equipped with two of the power terminals (20), and the center lines of the four power terminals (20) of the coil skeleton group are located on the same radial plane of the coil skeleton group, and the two power terminals (20) of one of the coil skeletons (10) are alternately arranged with the two power terminals (20) of another of the coil skeletons (10).

4. The electromagnetic coil according to claim 3, characterized in that The coil skeleton (10) comprises a frame (11), a mounting seat (12) and a terminal mounting block (13); the frame (11) has a winding groove (111) for winding the enameled wire; the mounting seat (12) is arranged on the bottom periphery of the frame (11); two terminal mounting blocks (13) spaced apart from each other are arranged at the bottom of the mounting seat (12); one of the power-carrying terminals (20) is mounted on any one of the terminal mounting blocks (13); the two coil skeletons (10) are butt-jointed with each other; the projections of the plurality of terminal mounting blocks (13) on the mounting seat (12) are arranged in sequence along the length direction of the mounting seat (12) and cover the mounting seat (12); and any two adjacent terminal mounting blocks (13) are limitedly matched.

5. The electromagnetic coil according to claim 4, characterized in that The edge of the mounting seat (12) on the side facing away from the frame (11) has two notches (121), and the two notches (121) are respectively arranged corresponding to the two terminal mounting blocks (13) below the mounting seat (12).

6. The electromagnetic coil according to claim 1, characterized in that The power-carrying terminal (20) further comprises a winding segment (232) connected to one end of the riveting segment (21) away from the plug-in segment (22); the coil frame (10) comprises a terminal mounting block (13); the terminal mounting block (13) has a terminal slot for mounting the power-carrying 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 bundling groove (2321); the enameled wire is wound around the winding segment (232) at least once through the bundling groove (2321).

7. The electromagnetic coil according to claim 6, characterized in that The connection between the winding section (232) and the riveting section (21) is in a stepped shape, and the enameled wire at least passes through the bundling groove (2321) and the stepped connection between the winding section (232) and the riveting section (21) to wind around the winding section (232) once.

8. The electromagnetic coil according to claim 6, characterized in that The power terminal (20) further comprises an anti-slip section (231) connected to one end of the winding section (232) away from the riveting section (21), the anti-slip section (231) being inserted into the terminal slot, and an anti-slip structure is provided on the outer periphery of the portion of the anti-slip section (231) inserted into the terminal slot and / or the inner wall of the terminal slot to limit the movement of the power terminal (20) in a direction of slipping out of the terminal slot.

9. The electromagnetic coil according to claim 8, characterized in that The anti-slip structure comprises an anti-slip barb (2312) and / or an anti-slip tooth (2313) arranged on the anti-slip section (231) or the inner wall of the terminal slot.

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

11. The electromagnetic coil according to claim 1, characterized in that The riveting section (21) comprises 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) 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 free end (2122) is bendably arranged toward the main board (211) so as to form a riveting gap (213) for riveting the power-on terminal (20) when the free end (2122) abuts against the main board (211).

12. The electromagnetic coil according to claim 11, characterized in that The power-on terminal (20) comprises a power-on terminal A and a power-on terminal B, wherein the power-on terminal A and the power-on terminal B are mounted on the same coil frame (10), the two riveted sections (21) corresponding to the power-on terminal A and the power-on terminal B are symmetrically arranged, and the two connecting ends (2121) corresponding to the power-on terminal A and the power-on terminal B are relatively arranged.

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

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

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

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