A differential mode inductor

Abstract

The utility model discloses a differential mode inductor, which relates to the field of electronic components. The differential mode inductor comprises an inductor winding and a fixed shell installed outside the inductor winding, wherein the fixed shell comprises a fixed seat, a movable cover, a support base and a positioning support portion. The differential mode inductor is manufactured by placing the inductor winding inside the fixed seat, and allowing the pins to pass through the connection grooves to the installation station, and then fixing the support base to the circuit board by screws. At this time, the fixed seat is plugged into the support base, and the positioning support portion is inserted into the installation station. At this time, the pins pass downward to the bottom of the support base, and at the same time, the positioning support portion is fixed by an elastic clip and a clip hole. At this time, the pins are welded to the circuit board, which effectively avoids the pins from being desoldered due to stress during use, and at the same time, the outer surface of the inductor winding is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a differential mode inductor. Background Art

[0002] Differential mode inductor is an inductor used to suppress differential mode interference. A coil is wound on an iron core. When the current changes, a magnetic field is generated. This magnetic field will increase or decrease, thereby hindering the current. Its main function is to reduce the interference current generated between lines.

[0003] The differential-mode inductor has two pins on its surface and an insulating base for support at the bottom. The pins penetrate the insulating base. When soldering with the circuit board, the insulating base contacts the circuit board, and the pins penetrate downwards through the soldering holes of the circuit board. Then the pins are soldered from the back. This causes the differential-mode inductor to lack effective fixation during the soldering process and is prone to movement, resulting in the inability to ensure that the insulating base is tightly attached to the circuit board after soldering. In subsequent use, the entire differential-mode inductor is supported and fixed only by two pins, which increases the probability of desoldering of the differential-mode inductor, affecting its service life. At the same time, the surface of the differential-mode inductor is exposed, and the metal coil on its surface is easily damaged by accidental touching during the assembly process, resulting in failure of the differential-mode inductor. For this reason, a differential-mode inductor is specially provided to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a differential mode inductor, which solves the problem that the prior differential mode inductor has a simple structure and relies only on two pins for support and fixation, which increases the probability of desoldering of the differential mode inductor and affects its service life. At the same time, the surface of the differential mode inductor is exposed, and the metal coil on its surface is easily damaged by accidental touching during the assembly process, resulting in failure of the differential mode inductor.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: A differential mode inductor includes an inductor winding and a fixed housing installed outside the inductor winding, wherein the fixed housing includes;

[0006] A fixing seat, wherein the inductor winding is embedded in the fixing seat;

[0007] A movable cover, which is detachably mounted on one side of the fixing base and is used to fix the inductor winding;

[0008] A supporting base, which is arranged at the bottom of the fixing base;

[0009] The positioning support part is integrally formed on both sides of the top of the support base, and the positioning support part is movably connected to the inside of the fixing seat to fix and support the fixing seat.

[0010] Preferably, the inductor winding comprises:

[0011] Ring permanent magnet;

[0012] A magnetic induction coil, which is wound around the outer surface of the annular permanent magnet;

[0013] Two sets of pins are fixedly welded to the magnetic induction coil.

[0014] Preferably, a shaping cylinder is provided in the middle of the fixing seat, an annular chamber is formed between the fixing seat and the shaping cylinder, and the annular permanent magnet is assembled in the annular chamber.

[0015] Preferably, an installation station is provided at the bottom of the fixing seat, and the positioning support portion is movably inserted in the installation station.

[0016] Preferably, a connecting groove is provided between the installation station and the annular chamber, the pin passes through the connecting groove, and the bottom end of the pin extends downward to below the supporting base.

[0017] Preferably, a clamping hole is provided on the side wall of the installation station, and an elastic clamping piece is integrally formed on the side surface of the positioning support portion, and the bottom end of the elastic clamping piece is movably inserted in the clamping hole.

[0018] Preferably, a rectangular groove is provided in the middle of the top surface of the support base, and a screw hole is provided in the inner bottom of the rectangular groove.

[0019] Preferably, a fixed stop cover is integrally formed between one side of the fixed seat and the shaping cylinder, and the movable stop cover is threadedly connected to the other side of the fixed seat.

[0020] Preferably, the movable cover comprises:

[0021] Block frame;

[0022] An external screw ring is integrally formed on the inner side wall of the retaining frame, an internal thread groove is provided on the fixing seat, and the external screw ring is threadedly connected in the internal thread groove;

[0023] The positioning ring is integrally formed in the middle of the retaining frame and is movably inserted in the shaping cylinder.

[0024] The utility model discloses a differential mode inductor, which has the following beneficial effects: by placing the inductor winding inside the fixing seat, and allowing the pins to pass through the connecting grooves to the installation station, and then fixing the support base to the circuit board by screws, the fixing seat is plugged into the support base, so that the positioning support part is inserted into the installation station, and the pins are downwardly penetrated to the bottom of the support base, and the positioning support part is fixed by the elastic clip and the clip hole, and the pins are welded to the circuit board, which effectively avoids the pins from being desoldered due to stress during use, and at the same time, the outer surface of the inductor winding is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0027] Figure 2 It is an exploded view of the overall structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the outer surface structure of the fixing seat of the utility model;

[0029] Figure 4 This is a schematic diagram of the outer surface structure of the support base of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the movable cover of the utility model.

[0031] In the figure: 1. inductor winding; 11. annular permanent magnet; 12. magnetic induction coil; 13. pin; 2. fixed shell; 21. fixed seat; 22. movable cover; 221. retaining frame; 222. outer screw ring; 223. positioning ring; 23. support base; 24. fixed cover; 25. shaping cylinder; 26. inner thread groove; 27. installation station; 28. connecting groove; 29. ​​clamping hole; 210. rectangular groove; 211. positioning support; 212. elastic clamp. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The embodiment of the present application provides a differential mode inductor to solve the problem that the existing differential mode inductor has a simple structure and relies on only two pins for support and fixation, which increases the probability of the differential mode inductor becoming desolderable, thereby affecting its service life. At the same time, the surface of the differential mode inductor is exposed, and the metal coil on its surface is easily damaged by accidental touching during the assembly process, resulting in the problem of differential mode inductor failure.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The embodiment of the utility model discloses a differential mode inductor.

[0036] Embodiment 1

[0037] According to the attached Figure 1-5 As shown, it includes an inductor winding 1 and a fixed housing 2 installed outside the inductor winding 1, and the fixed housing 2 includes;

[0038] A fixing base 21, in which the inductor winding 1 is embedded;

[0039] A movable cover 22, which is detachably mounted on one side of the fixing base 21 and is used to fix the inductor winding 1;

[0040] A supporting base 23, which is disposed at the bottom of the fixing base 21;

[0041] The positioning support part 211 is integrally formed on both sides of the top of the support base 23 . The positioning support part 211 is movably connected to the inside of the fixing seat 21 for fixing and supporting the fixing seat 21 .

[0042] The inductor winding 1 comprises:

[0043] Ring-shaped permanent magnet 11;

[0044] A magnetic induction coil 12, which is wound around the outer surface of the annular permanent magnet 11;

[0045] Two groups of pins 13 are fixedly welded to the magnetic induction coil 12 .

[0046] A shaping cylinder 25 is disposed in the middle of the fixing seat 21 , and an annular chamber is formed between the fixing seat 21 and the shaping cylinder 25 , in which the annular permanent magnet 11 is assembled.

[0047] An installation station 27 is provided at the bottom of the fixing seat 21 , and the positioning support portion 211 is movably inserted into the installation station 27 .

[0048] A connecting groove 28 is defined between the installation station 27 and the annular chamber. The pin 13 passes through the connecting groove 28 , and the bottom end of the pin 13 extends downward to below the supporting base 23 .

[0049] A clamping hole 29 is formed on the side wall of the installation station 27 , and an elastic clamping piece 212 is integrally formed on the side of the positioning support portion 211 . The bottom end of the elastic clamping piece 212 is movably inserted into the clamping hole 29 .

[0050] A rectangular groove 210 is formed in the middle of the top surface of the support base 23 , and screw holes are formed in the inner bottom of the rectangular groove 210 .

[0051] When the device is in use, the inductor winding 1 is placed inside the fixing seat 21, and the pin 13 passes through the connecting groove 28 to the installation station 27, and then the support base 23 is fixed to the circuit board by screws. At this time, the fixing seat 21 is plugged into the support base 23, so that the positioning support part 211 is inserted into the installation station 27. At this time, the pin 13 passes downward to the bottom of the support base 23, and the positioning support part 211 is clamped and fixed with the clamping hole 29 through the elastic clamp 212. At this time, the pin 13 is welded to the circuit board, which effectively avoids the pin 13 from being desoldered due to force during use, and at the same time protects the outer surface of the inductor winding 1.

[0052] Embodiment 2

[0053] According to the attached Figure 1-5 As shown, on the basis of Example 1, more specifically; a fixed baffle 24 is integrally formed between one side of the fixed seat 21 and the shaping cylinder 25, and a movable baffle 22 is threadedly connected to the other side of the fixed seat 21, and the movable baffle 22 includes a baffle frame 221, an outer screw ring 222 and a positioning ring 223, the outer screw ring 222 is integrally formed on the inner side wall of the baffle frame 221, an inner thread groove 26 is opened on the fixed seat 21, and the outer screw ring 222 is threadedly connected in the inner thread groove 26; the positioning ring 223 is integrally formed in the middle of the baffle frame 221, and the positioning ring 223 is movably inserted in the shaping cylinder 25.

[0054] In this embodiment, when the inductor winding 1 is damaged, the pins 13 are soldered and melted off, and then the retaining frame 221 is rotated so that the outer screw ring 222 is screwed out of the inner thread groove 26. At this time, the entire movable cover 22 is removed, and the inductor winding 1 can be pulled out from one side of the fixing seat 21 for repair and replacement.

[0055] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A differential mode inductor, comprising an inductor winding (1) and a fixed housing (2) mounted outside the inductor winding (1), characterized in that: The fixed housing (2) comprises: A fixing seat (21), wherein the inductor winding (1) is embedded inside the fixing seat (21); A movable cover (22) is detachably mounted on one side of the fixing seat (21) and is used to fix the inductor winding (1); A supporting base (23) disposed at the bottom of the fixing base (21); A positioning support portion (211) is integrally formed on both sides of the top of the support base (23); the positioning support portion (211) is movably snap-connected to the interior of the fixing seat (21) and is used to fix and support the fixing seat (21); A shaping cylinder (25) is provided in the middle of the fixing seat (21), and an annular chamber is formed between the fixing seat (21) and the shaping cylinder (25).

2. The differential mode inductor according to claim 1, characterized in that: The inductor winding (1) comprises: annular permanent magnet (11); A magnetic induction coil (12) wound around the outer surface of the annular permanent magnet (11); Two groups of pins (13) are fixedly welded to the magnetic induction coil (12).

3. A differential mode inductor according to claim 2, characterized in that: The annular permanent magnet (11) is assembled in the annular chamber.

4. The differential mode inductor according to claim 3, characterized in that: An installation station (27) is provided at the bottom of the fixing seat (21), and the positioning support portion (211) is movably inserted into the installation station (27).

5. The differential mode inductor according to claim 4, characterized in that: A connecting groove (28) is provided between the installation station (27) and the annular chamber, the pin (13) passes through the connecting groove (28), and the bottom end of the pin (13) extends downward to below the support base (23).

6. The differential mode inductor according to claim 4, characterized in that: A clamping hole (29) is provided on the side wall of the installation station (27), and an elastic clamping piece (212) is integrally formed on the side of the positioning support portion (211), and the bottom end of the elastic clamping piece (212) is movably inserted into the clamping hole (29).

7. The differential mode inductor according to claim 1, characterized in that: A rectangular groove (210) is provided in the middle of the top surface of the support base (23), and screw holes are provided at the inner bottom of the rectangular groove (210).

8. The differential mode inductor according to claim 2, characterized in that: A fixed stop cover (24) is integrally formed between one side of the fixed seat (21) and the shaping cylinder (25), and the movable stop cover (22) is threadedly connected to the other side of the fixed seat (21).

9. The differential mode inductor according to claim 8, characterized in that: The movable blocking cover (22) comprises: Blocking frame (221); An external screw ring (222) is integrally formed on the inner side wall of the retaining frame (221); an internal thread groove (26) is provided on the fixing seat (21), and the external screw ring (222) is threadedly connected in the internal thread groove (26); The positioning ring (223) is integrally formed in the middle of the retaining frame (221), and the positioning ring (223) is movably inserted in the shaping cylinder (25).

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