Stab-type terminal and magnetic device

Abstract

The utility model provides a stabbing type terminal and a magnetic device. The stabbing type terminal comprises at least one main body part which can be inserted into a shell of a magnetic device, at least one side of each main body part is provided with a plurality of stabs protruding outwards, a leading-in angle and an anti-falling angle are formed between the stabs and the corresponding side, the leading-in angle is an acute angle along the direction in which the main body parts are inserted into the magnetic device, and the anti-falling angle is an anti-falling angle. The anti-falling corner is matched with the shell so as to prevent the main body part from moving in the direction opposite to the insertion direction; the wiring part is arranged at one end of one main body part and is used for being electrically connected with a lead of the magnetic device; and the external connection part is arranged at one end of one main body part and is used for being electrically connected with a circuit board. On the basis, the terminal can be conveniently installed, the terminal is prevented from loosening after installation is completed, and the risk of electric connection failure between the terminal and a lead and between the terminal and a circuit board is reduced.

Description

Technical Field

[0001] This application relates to the field of magnetic devices, specifically to a spike-type terminal and a magnetic device. Background Technology

[0002] With the rapid development of technology, especially the emergence of multifunctional devices, the demand for passive components is increasing, and magnetic components, as one type of passive element, have been widely used. A magnetic component includes at least a magnet, windings, and terminals (also known as "external terminals" or "external electrodes"). The terminals mainly serve two functions: first, as a connection point, they electrically connect to the leads of the windings; second, as electrodes, they electrically connect to the circuit board (e.g., a PCB, or Printed Circuit Board). Currently, the sides of the terminals are usually relatively flat and smooth. When assembled into magnetic components, the fit between the terminals and the housing is not stable, and the terminals are prone to loosening, resulting in a high risk of electrical connection failure between the terminals and the leads and the circuit board. Utility Model Content

[0003] In view of this, this application provides a spike-type terminal and a magnetic device, which can improve the problem that the terminal is prone to loosening and the resulting high risk of electrical connection failure with the lead wire and circuit board.

[0004] This application provides a spike-type terminal, comprising:

[0005] At least one main body portion is insertable into the housing of a magnetic device. Each main body portion has at least one side provided with a plurality of outwardly protruding protrusions. An inlet angle and an anti-disengagement angle are formed between the protrusions and the corresponding side of the main body portion. The inlet angle is an acute angle along the direction in which the main body portion is inserted into the housing. The anti-disengagement angle cooperates with the housing to prevent the main body portion from moving in the opposite direction of the insertion direction.

[0006] A wiring section is provided at one end of one of the main bodies for electrical connection with the leads of a magnetic device;

[0007] An external part is provided at one end of one of the main parts for electrical connection with the circuit board.

[0008] Optionally, the ingress angle is α, and 10°≤α≤35°.

[0009] Optionally, the anti-detachment angle is β, and 60°≤β≤130°.

[0010] Optionally, the height difference between the spike and the corresponding side is H, and 0.03mm≤H≤0.3mm.

[0011] Optionally, the radius of the protrusion of the spike is R, and 0mm≤R≤0.1mm.

[0012] Optionally, the external portion extends in the same direction as the corresponding main body portion and both are located in the same plane.

[0013] Optionally, each side of the insertion end of the external part is provided with a chamfer, and the chamfer is an acute angle along the insertion direction.

[0014] Optionally, the chamfer is θ, and θ satisfies: 10°≤θ≤45°.

[0015] Optionally, the spike-type terminal includes a first main body and a second main body disposed opposite to each other; the external part is disposed at a first end of the first main body and a first end of the second main body, and is perpendicular to the extension direction of both the first main body and the second main body; the external part connects the first main body and the second main body, and can be exposed and attached to the bottom of the magnetic device.

[0016] Optionally, the wiring portion is disposed at the second end of the first main body portion; the height of the first main body portion is greater than the height of the second main body portion, so that the wiring portion can be exposed to the magnetic device, and the second end of the second main body portion is not exposed to the magnetic device.

[0017] Optionally, the wiring portion is also disposed at the first end of one of the first main body portion and the second main body portion, and along the extending direction, the wiring portion is located between the external portion and the second end of the first main body portion.

[0018] Optionally, the spike-type terminal further includes an extension portion, one end of which is disposed on one side of the external portion. After the extension portion is bent, its other end is directed toward the second end of the first main body portion along the extension direction and can be exposed and attached to the side of the magnetic device.

[0019] This application provides a magnetic device comprising a magnet, a housing, a winding, and a spiked terminal as described in any of the preceding claims. The winding is wound around the magnet, the main body of the spiked terminal is inserted into the housing, the wiring portion of the spiked terminal is electrically connected to the lead wire of the winding, and the external portion of the spiked terminal is electrically connected to a circuit board.

[0020] As described above, in the spiked terminal and magnetic device of this application, the spiked terminal (also referred to as a "terminal") is provided with at least one main body portion for insertion into the housing. The main body portion is provided with a plurality of outwardly protruding spikes. An inlet angle and an anti-disengagement angle are formed between the spikes and the corresponding side of the terminal. The inlet angle is an acute angle along the direction in which the main body portion is inserted into the housing, which is beneficial for the terminal to be inserted into the housing and facilitates installation. The housing can cooperate with the anti-disengagement angle to prevent the terminal and its main body portion from moving in the opposite direction of the insertion direction. Therefore, when the terminal is inserted into the housing, the terminal can be prevented from becoming loose in the magnetic device, thereby reducing the risk of electrical connection failure between the terminal and the lead wire and the circuit board. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the first type of spike-type terminal according to the first embodiment of this application;

[0022] Figure 2 yes Figure 1 A side view of a spike-type terminal is shown;

[0023] Figure 3 This is an exploded view of the structure of the first magnetic device according to the first embodiment of this application;

[0024] Figure 4 and Figure 5 yes Figure 3 The diagram shows a three-dimensional structure of the magnetic device from two different perspectives.

[0025] Figure 6 This is a three-dimensional structural diagram of the second type of spike-type terminal according to the first embodiment of this application;

[0026] Figure 7 yes Figure 6 Side view of the spiked terminal shown;

[0027] Figure 8 This is a schematic diagram of the structure of the second type of magnetic device according to the first embodiment of this application;

[0028] Figure 9 This is a three-dimensional structural diagram of the third type of spike-type terminal according to the first embodiment of this application;

[0029] Figure 10 yes Figure 9 Side view of the spiked terminal shown;

[0030] Figure 11 This is a schematic diagram of the structure of the third type of magnetic device according to the first embodiment of this application;

[0031] Figure 12 This is a schematic diagram of the structure of a spike-type terminal according to the second embodiment of this application;

[0032] Figure 13 yes Figure 12 Side view of the spiked terminal shown;

[0033] Figure 14 This is a schematic diagram of the structure of the magnetic device and circuit board assembled according to the second embodiment of this application;

[0034] Figure 15 This is a schematic diagram of the structure of a spike-type terminal according to the third embodiment of this application;

[0035] Figure 16 yes Figure 15 Side view of the spiked terminal shown;

[0036] Figure 17 This is a schematic diagram of the structure of a magnetic device according to the third embodiment of this application;

[0037] Figure 18 yes Figure 17 The diagram shows the structure after the magnetic device is electrically connected to the circuit board.

[0038] First direction x, second direction y, third direction;

[0039] Magnetic device 100, magnet / magnetic ring 1, winding 2, spike-type terminal / terminal 3, housing 4, lead wire 20, insulating partition 5, protective sheet 6; first terminal 3a, second terminal 3b, pre-positioning 30, main body 31, wiring part 32, external part 33, spike 311, first branch 321, second branch 322, third branch 323, branch 324, notch 325, first main body 312, second main body 313, extension part 34, solder 341, first wire pressing branch 326, second wire pressing branch 327; mounting hole 41, wire outlet groove 42, wire protection groove 43, support 44, assembly 45, top wall 401, colloid 402, table surface 440, circuit board 200. Detailed Implementation

[0040] To address the aforementioned technical problems in the prior art, the spike-type terminal (hereinafter referred to as "terminal") of this application is provided with at least one main body portion for insertion into a magnet. The main body portion is provided with a plurality of outwardly protruding spikes. An inlet angle and an anti-disengagement angle are formed between the spikes and the corresponding sides of the main body portion. The inlet angle is an acute angle along the direction in which the magnetic device is inserted into the main body portion, so as to facilitate the insertion of the terminal into the magnet and facilitate installation. The anti-disengagement angle cooperates with the housing to prevent the terminal from moving in the opposite direction of the insertion direction, thereby avoiding the terminal from becoming loose and reducing the risk of electrical connection failure between the terminal and the leads of the magnetic device and the circuit board.

[0041] The specific form of the shape, quantity, size, and other parameters of any of the spiked terminals, spikes, main body, wiring part, external part, magnetic device, magnet, and winding can be determined according to the adaptability required by the actual scenario, and this application does not limit it.

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described below are only a part of the embodiments of this application, and not all of them. Unless otherwise specified, the following embodiments and their technical features can be combined with each other, and also belong to the technical solutions of this application.

[0043] In the description of the embodiments of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solutions of the corresponding embodiments, and are not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application.

[0044] First Embodiment

[0045] See also Figure 1 and Figure 2 The present application provides an example of a spike-type terminal (which may be referred to simply as a "terminal" or "external terminal") 3. A single terminal 3 includes a main body 31, a wiring portion 32, and an external portion 33. This terminal 3 is suitable for applications such as... Figures 3 to 5 The magnetic device 100 shown is used for electrical connection with the circuit board. The structure and assembly design of terminal 3 are described below in conjunction with the magnetic device 100.

[0046] At least one side of the main body 31 is provided with a plurality of outwardly protruding protrusions 311, in Figures 1 to 3 In the example, the main body 31 has multiple protrusions 311 on both sides along its width direction (i.e., along the third direction z). The multiple protrusions 311 on any side of the main body 31 are arranged opposite each other in sequence along the second direction y, and the distance between each pair can be equal to achieve uniform distribution. Each protrusion 311 forms an induction angle α and an anti-detachment angle β with the corresponding side of the main body 31, and the induction angle α is an acute angle along the direction in which the magnetic device 100 is inserted into the main body 31 (i.e., along the opposite direction of the second direction y or the direction of gravity).

[0047] A wiring portion 32 is located at one end of the main body portion 31, such as the upper end or top end as shown in the figure, for electrical connection with the lead 20 of the winding 2 of the magnetic device 100. An external connection portion 33 is located at one end of the main body portion 31, such as the lower end or bottom end as shown in the figure, for electrical connection with the circuit board. The external connection portion 33 extends in the same direction as the corresponding main body portion 31, both parallel to the second direction y, and both are located in the same plane, so that each terminal 3 is a sheet electrode, suitable for plug-in magnetic device 100.

[0048] The magnetic device 100 includes a magnet 1, a winding 2, several terminals 3, and a housing 4. The number of terminals 3 provided in this application can be determined according to the type of magnetic device 100; for example... Figures 3 to 5 The magnetic device 100 shown may be provided with four terminals 3.

[0049] For ease of description and understanding, combined with Figures 1 to 5 In the orientation shown, the width direction of the magnetic device 100 is referred to as the first direction x, the height direction as the second direction y, and the thickness direction as the third direction z. The first direction x, the second direction y, and the third direction z are all perpendicular to each other and can be regarded as the three coordinate axes of a three-dimensional rectangular coordinate system. It should be understood that the term "perpendicular" throughout this application does not require that the angle between the two directions must be 90°, but allows for deviations of, for example, ±10°. That is, "perpendicular" can be understood as the angle between any two directions being 80° to 100°. Similarly, the term "parallel" throughout this application does not require that the angle between the two directions be 0° or 180°, but allows for deviations of, for example, ±10°. That is, "parallel" can be understood as the angle between any two directions being 0° to 10° or 170° to 190°.

[0050] Magnet 1 can be a ring-shaped magnetic component with a circular cross-section (xz), referred to as magnetic ring 1, made of a soft magnetic material conventional in the art, and the surface of magnet 1 is covered with an insulating layer. The magnet 1 illustrated in this application is only an exemplary illustration; other examples may also be octagonal or other polygonal shapes.

[0051] Winding 2 may include two coils, each coil being formed, for example, by leads 20 of the type enameled wire. The leads 20 of each coil are wound turn by turn onto the magnetic ring 1, the winding method depending on the specific application. After winding, the two coils are positioned opposite each other along a first direction x. "Relatively positioned" means that the two coils are not in contact, i.e., they have a non-zero distance between them. The ends of the leads 20 may extend beyond the magnetic ring 1 and be electrically connected to corresponding terminals 3, for example, by soldering. Figures 3 to 5In the example, the winding 2 is provided with four lead wire 20 ends, and the magnetic device 100 is provided with four terminals 3. These four terminals 3 have different shapes. For ease of description, the two identical ones can be referred to as first terminals 3a, and the other two identical ones as second terminals 3b. The structures of the first terminals 3a and the second terminals 3b can be arranged symmetrically. The two lead wire 20 ends are respectively welded to the two second terminals 3b in a one-to-one correspondence. The remaining two lead wire 20 ends are respectively welded to the two first terminals 3a in a one-to-one correspondence.

[0052] like Figure 3 As shown, an insulating partition 5, made of insulating material, can be provided between the two coils to separate them and prevent interference. Of course, when the distance between the two coils is large enough, the magnetic device 100 may not require the insulating partition 5.

[0053] The housing 4 can be made of plastic and is provided with a receiving cavity, a mounting hole 41, a wire outlet groove 42, and a wire protection groove 43. The top of the receiving cavity is closed and serves as the top wall 401 of the housing 4. The bottom of the receiving cavity is open and has an opening to serve as part of the bottom of the housing 4 for mounting and exposing the winding 2. In addition, a support platform 44 is provided on the periphery of the receiving cavity and near the top wall 401. The mounting hole 41 is a through hole that penetrates the support platform 44 along the second direction y. The xz cross-sectional shape of the mounting hole 41 is adapted to the xz cross-sectional shape of the corresponding terminal 3. For example, a serrated structure can be provided in the mounting hole 41 to adapt to the protrusions 311 of each terminal 3.

[0054] Each main body 31 can be inserted into the corresponding mounting hole 41 of the housing 4 along the second direction y. The serrated structure within the mounting hole 41 allows only the protrusions 311 to be inserted in the insertion direction, and abuts against the anti-disengagement angle β to prevent the protrusions 311 from disengaging from the mounting hole 41 in the opposite direction of the insertion direction. The external part 33 extends beyond the housing 4 via the bottom of the housing 4 and can be electrically connected to the circuit board via a plug-in method. In other examples, the housing 4 can be formed by injection molding to enclose each main body 31.

[0055] After the winding 2 and the magnet 1 are assembled, they are installed in the receiving cavity through the opening at the bottom of the housing 4. A glue 402 can be provided on one side of the receiving cavity corresponding to the top wall 401. This glue 402 bonds and fixes the two coils of the winding 2 and the insulating partition 5 into the receiving cavity of the housing 4. In one example, the magnetic device 100 can have a protective sheet 6 at the bottom of the receiving cavity, made of insulating material, and placed on the surface of the winding 2 coil facing the external connection 33 to fully shield the winding 2 coil and improve the defect of poor insulation withstand voltage caused by solder splattering onto the coil body during soldering of the external connection 33 to the circuit board.

[0056] Each lead 20 end of the winding 2 coil extends from the corresponding lead slot 42 to the outside of the housing 4, and extends along the wire protection slot 43 on the outside of the housing 4 to the platform 440 of the support 44, so as to connect with the wiring portion 32 of the corresponding main body 31. The connection between the lead 20 end and the wiring portion 32 can be wrapped by a bonding agent 45 such as solder. The platform 440 of the support 44 is lower than the top wall 401 of the housing 4, so that the top of each main body 31 after being wound with the lead 20 end is also lower than the top wall 401 of the housing 4. Finally, the connection between the lead 20 end and the wiring portion 32 is also lower than the top wall 401 of the housing 4, reducing the risk of the connection being affected by external impact, thereby improving the stability of the electrical connection.

[0057] Based on the above, the acute angle α of the protrusion 311 in the direction of insertion of the main body 31 into the housing 4 is conducive to the insertion of the terminal 3 into the housing 4, which is convenient for installation. The anti-dislodgement angle β of the protrusion 311 can cooperate with the housing 4 so that the housing 4 applies a force to the protrusion 311 at least in the opposite direction of insertion to prevent the terminal 3 from moving in the opposite direction of insertion. Therefore, it avoids the terminal 3 from becoming loose relative to the magnet 1 and the housing 4, thereby reducing the risk of electrical connection failure between the terminal 3 and the lead 20 and the circuit board.

[0058] In one example, the spike 311 satisfies at least one of the following:

[0059] The ingress angle α satisfies 10°≤α≤35°;

[0060] The anti-detachment angle β satisfies 60°≤β≤130°;

[0061] The height difference between the protrusion 311 and the corresponding side is H, which can be regarded as the protrusion height of the protrusion 311 being H, and 0.03mm≤H≤0.3mm;

[0062] The radius of the protrusion of the spike 311 is R, and 0mm≤R≤0.1mm. Among them, the protrusion of the spike 311 is optimally designed with a sharp angle.

[0063] Based on the aforementioned threshold range, this example ensures that while terminal 3 is easy to insert and install and not easily loosened, each protrusion 311 has high structural strength.

[0064] Please continue reading. Figure 2Each terminal 3 has a chamfer θ on its opposite sides along its width direction, and the chamfer θ is acute along the insertion direction, so that the width of the outer portion 33 gradually decreases along the extension direction, facilitating the insertion and installation of each terminal 3 into the housing 4. In one example, the chamfer θ satisfies: 10°≤θ≤45°. Furthermore, in practical scenarios, for the plate-type terminal 3 shown in the figure, the insertion end of the outer portion 33 includes four sides, so chamfer θ can be provided on each of its four sides.

[0065] exist Figures 1 to 5 In the example, each terminal 3 can form a narrow pre-position 30 at the junction of the wiring portion 32 and the main body portion 31. The end of the lead wire 20 is wound around this pre-position 30 to achieve an electrical connection between the coil of the winding 2 and the corresponding terminal 3. In addition, the wiring portion 32 and the main body portion 31 can be staggered. When the main body portion 31 is inserted into the housing 4, the wiring portion 32 is away from the receiving cavity, which facilitates the end of the lead wire 20 to be wound around the wiring portion 32 between the wiring portion 32 and the receiving cavity.

[0066] This application does not limit the way in which the lead 20 end and the wiring part 32 are electrically connected. Accordingly, the specific structure of the wiring part 32 can be adapted to actual needs.

[0067] For example, combining Figures 6 to 8 As shown, the wiring portion 32 can be vertically disposed on the side of the main body 31 away from the receiving cavity, and includes a first branch 321, a second branch 322, and a third branch 323. The first branch 321 is plate-shaped and vertically disposed on one side of the main body 31. The second branch 322 and the third branch 323 are respectively connected to the two sides of the first branch 321 along its width direction. When the end of the lead wire 20 extends onto the first branch 321, the second branch 322 and the third branch 323 are bent toward the end of the lead wire 20, and finally the end of the lead wire 20 is pressed and fixed onto the first branch 321 to achieve electrical connection between the end of the lead wire 20 and the wiring portion 32. The bent second branch 322 and the third branch 323 are arranged side by side along the thickness direction of the main body 31 to improve the pressing and fixing effect on the end of the lead wire 20.

[0068] For example, combining Figures 9 to 11 As shown, the wiring portion 32 may include two branches 324 disposed opposite to each other. One branch 324 is disposed opposite to the side of the main body portion 31 to form a notch 325. The end of the lead wire 20 extends through the connection portion 32 and the cavity wall of the receiving cavity to the notch 325, and then extends through the side of the connection portion 32 away from the receiving cavity to the other branch 324. It then extends around the other branch 324 and through the connection portion 32 and the cavity wall of the receiving cavity, and finally is locked and fixed between the two branches 324 to realize the electrical connection between the end of the lead wire 20 and the connection portion 32.

[0069] Second Embodiment

[0070] This application uses the same reference numerals to identify structural elements with the same name. Based on the description of the first embodiment above, the difference lies in the combination of… Figures 12 to 14 As shown, each spike-type terminal 3 of this second embodiment includes two main body parts 31 arranged opposite to each other, referred to as the first main body part 312 and the second main body part 313 respectively, and the two are arranged opposite to each other along the third direction z in the figure.

[0071] The external connection portion 33 is disposed at the first end (i.e., the lower end or bottom end) of the first main body portion 312 and the first end (i.e., the lower end or bottom end) of the second main body portion 313, and is perpendicular to both the extension direction (i.e., the second direction y) of the first main body portion 312 and the extension direction of the second main body portion 313, thereby connecting the first end of the first main body portion 312 and the first end of the second main body portion 313. The external connection portion 33 can be exposed and attached to the bottom of the magnetic device 100. In this embodiment, the magnetic device 100 is equivalent to a surface mount magnetic device 100, and the external connection portion 33 can be regarded as a surface mount electrode or surface mount pin of the magnetic device 100.

[0072] The wiring portion 32 is located at the second end of the first main body portion 312, i.e., the upper end or the top end.

[0073] The height of the first main body 312 is greater than the height of the second main body 313. The height refers to the length along the second direction y, so that the wiring part 32 can be exposed in the housing 4 of the magnetic device 100, while the second end of the second main body 313 is not exposed in the housing 4 of the magnetic device 100.

[0074] In this embodiment, both main body portions 31 are provided with protrusions 311, which improves the stability of the fit between the terminal 3 and the housing 4, reduces the risk of loosening in the magnetic device 100, and lowers the risk of electrical connection failure. In other examples, the protrusions 311 may be provided on only one of the main body portions 31, or the protrusions 311 may be provided on only one side of any main body portion 31.

[0075] The spike-type terminal 3 in this embodiment also includes an extension 34. One end of the extension 34 is disposed on one side of the external part 33. After the extension 34 is bent, its other end is directed toward the second end of the first main body 312 along the second direction y, and can be exposed and attached to the side of the magnetic device 100.

[0076] Unlike the first embodiment described above, where the main body 31 is inserted into the housing 4 from the top, in this second embodiment, each main body 31 is inserted into the housing 4 from the bottom to be assembled into the magnetic device 100. When the protruding terminal 3 is assembled into the magnetic device 100, the extension 34 can be exposed and attached to the side of the magnetic device 100. When the external part 33 is soldered to the circuit board 200 to perform SMT mounting, the solder 341 used for soldering will exhibit solder creep, that is, the solder will overflow towards the extension 34 and adhere to the outer surface of the extension 34. Therefore, the finally cured solder 341 will be exposed in the extension 34 of each terminal 3. When using AOI (Automated Optical Inspection) technology, the solder 341 image can be acquired along the direction of gravity (i.e., the opposite direction of the second direction y), and the soldering quality can be judged accordingly, thereby achieving effective monitoring of SMT quality.

[0077] Third Embodiment

[0078] Based on the description of the second embodiment, the difference lies in the combination Figures 15 to 18 As shown, in each of the protruding terminals 3 in this third embodiment, the wiring portion 32 is also provided at the first end of the first main body portion 312 and the first end of the second main body portion 313. The wiring portion 32 and the external connection portion 33 are arranged side by side between the first main body portion 312 and the second main body portion 313. Along the second direction y, the wiring portion 32 is located between the external connection portion 33 and the second end of the first main body portion 312 (or the second main body portion 313), that is, in the insertion direction or the second direction y, the wiring portion 32 and the external connection portion 33 are arranged with a height difference.

[0079] Wiring section 32 can be adopted with Figure 6 The structure of the external part 33 shown is similar to that of the principle, such as Figure 15 and Figure 16 As shown, the wiring section 32 includes a first crimping branch 326 and a second crimping branch 327. The end of the lead wire 20 extends out of the receiving cavity through the bottom of the housing 4 and is finally held and fixed by the first crimping branch 326 and the second crimping branch 327 to realize the electrical connection between the end of the lead wire 20 and the external connection section 33.

[0080] The main body 31 of each terminal 3 is inserted into the housing 4 from the bottom along the second direction y, so that the external part 33 is exposed and attached to the bottom of the magnetic device 100. Optionally, the end of the main body 31 of each terminal 3 away from the external part 33 (i.e., the second end or the top end) may be provided with a chamfer θ as described in the first embodiment above. The second ends of the first main body 312 and the second main body 313 may not extend outside the housing 4 of the magnetic device 100, but may be exposed or not exposed on the platform 440 of the support 44.

[0081] This embodiment differs in structure from the magnetic device 100 in the aforementioned embodiments, but this is not within the scope of protection of the inventive concept of the spiked terminal 3 in this application, and therefore will not be described in detail.

[0082] This application also provides a magnetic device, including a magnet, a housing, a winding, and a spiked terminal 3 as described in any of the above embodiments. Therefore, it possesses the beneficial effects that the spiked terminal 3 of the corresponding embodiments can produce, which will not be elaborated further here. The winding 2 is wound around the magnet 1, the main body 31 of the spiked terminal 3 is inserted into the housing 4, the wiring portion 32 of the spiked terminal 3 is electrically connected to the lead wire 20 of the winding 2, and the external connection portion 33 of the spiked terminal 3 is electrically connected to the circuit board. The structural design of these components and their mutual cooperation can be found in the aforementioned corresponding embodiments.

[0083] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. For those skilled in the art, any equivalent structural transformations made using the content of this specification and drawings are similarly included within the patent protection scope of this application.

[0084] Although this document uses terms such as "first," "second," etc., to describe various types of information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. Furthermore, the singular forms "a," "an," and "the" are intended to also include the plural forms. The terms "or" and "and / or" are interpreted as inclusive, or meaning either one or any combination thereof. Exceptions to this definition only arise when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

Claims

1. A poke-in terminal characterized by comprising: The application relates to a spike-shaped terminal, which comprises at least one main body part, which can be inserted into a shell of a magnetic device, and a plurality of protrusions outwardly protruding from at least one side of each main body part, wherein an introduction angle and an anti-extraction angle are formed between the protrusions and the corresponding side of the main body part, and along the direction of insertion of the main body part into the shell, the introduction angle is an acute angle, and the anti-extraction angle cooperates with the shell to prevent the main body part from moving in the opposite direction of the insertion direction. A wiring part is arranged at one end of one main body part and is used for electrically connecting with a lead wire of the magnetic device. An external connecting part is arranged at one end of one main body part and is used for electrically connecting with a circuit board. At least one of the following conditions is met:

2. The poke-in terminal according to claim 1, characterized by The introduction angle alpha satisfies 10 DEG <= alpha <= 35 DEG. The anti-extraction angle beta satisfies 60 DEG <= beta <= 130 DEG. The height difference between the protrusions and the corresponding side is H, and 0.03 mm <= H <= 0.3 mm is met. The protrusion point corner radius of the protrusions is R, and 0 mm <= R <= 0.1 mm is met. The external connecting part and the corresponding main body part have the same extension direction and are located in the same plane.

3. The poke-in terminal according to claim 1 or 2, characterized by Each side of the insertion end of the external connecting part is provided with a chamfer, and along the insertion direction, the chamfer is an acute angle.

4. The poke-in terminal according to claim 3, characterized by The chamfer is theta, and 10 DEG <= theta <= 45 DEG is met.

5. The poke-in terminal according to claim 4, characterized by The spike-shaped terminal comprises oppositely arranged first and second main body parts.

6. The poke-in terminal according to claim 1 or 2, characterized by The external connecting part is arranged at the first end of the first main body part and the first end of the second main body part, and the extension directions of the first and second main body parts are perpendicular to the extension direction of the external connecting part; the external connecting part connects the first and second main body parts and can be exposed to the bottom of the magnetic device.

7. The spike-shaped terminal according to claim 6, wherein The wiring part is arranged at the second end of the first main body part. The height of the first main body part is greater than the height of the second main body part, so that the wiring part can be exposed to the magnetic device, and the second end of the second main body part is not exposed to the magnetic device. The wiring part is also arranged at the first end of one of the first and second main body parts, and along the extension direction, the wiring part is located between the external connecting part and the second end of the first main body part.

8. The poke-in terminal according to claim 6, characterized by The spike-shaped terminal further comprises an extension part, one end of the extension part is arranged at one side of the external connecting part, and after being bent, the other end of the extension part is directed towards the second end of the first main body part along the extension direction and can be exposed to the side of the magnetic device.

9. The poke-in terminal according to claim 6, characterized by The application relates to a spike-shaped terminal, which comprises at least one main body part, which can be inserted into a shell of a magnetic device, and a plurality of protrusions outwardly protruding from at least one side of each main body part, wherein an introduction angle and an anti-extraction angle are formed between the protrusions and the corresponding side of the main body part, and along the direction of insertion of the main body part into the shell, the introduction angle is an acute angle, and the anti-extraction angle cooperates with the shell to prevent the main body part from moving in the opposite direction of the insertion direction.

10. A magnetic device, characterized by, ​

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