SMD (Surface Mount Device) inductor

Abstract

The utility model discloses a patch type inductor, which relates to the field of inductor structures and comprises a base, a magnetic core arranged on the base, a partition plate arranged in the middle of the magnetic core, coils arranged on two sides of the partition plate and wound on the magnetic core, and a fixing device comprising two fixing parts symmetrically arranged at two ends of the partition plate. The fixing piece is arranged between the partition plate and the base, the inner arc face of the fixing piece makes contact with the magnetic core, and connecting pieces are arranged at the four corners of the base and connected with the coil. According to the patch type inductor, the fixing device is arranged between the base and the partition plate, additional support can be provided for fixing of the magnetic core, the connection strength between the magnetic core and the base is enhanced, the structural stability of the inductor can be effectively improved, displacement of internal elements is prevented, and the shaking frequency of the magnetic core is reduced; and the welding point between the coil and the patch is prevented from being broken or pseudo-welded, so that the stability and the reliability of the whole circuit are prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the field of inductor structures, in particular to a chip-type inductor. Background Art

[0002] As a key component in electronic devices such as high-power LED sources, chip inductors play the role of automatic adjustment, safety protection and conversion circuits.

[0003] In traditional SMD inductor designs, the magnetic core is only fixed by the connection between the coil and the base. Due to the relatively low connection strength, the magnetic core is prone to shaking when the device is working or subjected to external vibrations, which not only affects the performance of the inductor, but may also cause the soldering point between the coil and the SMD to break or become cold, thus affecting the stability and reliability of the entire circuit. Utility Model Content

[0004] The purpose of the utility model is to provide a chip inductor, in which a fixing device is arranged between a base and a partition, which can provide additional support for the fixation of a magnetic core, strengthen the connection strength between the magnetic core and the base, effectively improve the structural stability of the inductor, prevent the displacement of internal components, reduce the frequency of shaking of the magnetic core, and avoid fracture or cold soldering at the welding point between the coil and the patch, thereby affecting the stability and reliability of the entire circuit.

[0005] The above-mentioned optimized structure of the utility model is realized through the following technical scheme: a chip inductor, including a base, a magnetic core is provided on the base, a partition is provided in the middle of the magnetic core, coils are provided on both sides of the partition, and the coils are wound on the magnetic core. It also includes a fixing device, and the fixing device includes two fixing parts, the two fixing parts are symmetrically arranged at both ends of the partition, the fixing parts are arranged between the partition and the base, and the inner arc surface of the fixing parts is in contact with the magnetic core, and connecting parts are provided at the four corners of the base, and the connecting parts are connected to the coils.

[0006] In some embodiments, the fixing member is an arc-shaped block, and the fixing member includes a hinged portion and a connecting portion, the hinged portion is hinged to one end of the partition, and the connecting portion is detachably connected to the base.

[0007] In some embodiments, both ends of the partition are provided with rotation grooves, one end of the hinged portion is arranged in the rotation groove, and a rotation shaft is provided through the hinged portion and the rotation groove.

[0008] In some embodiments, slots are provided at both ends of the base, the slots penetrate through one end surface and the top surface of the base, and the connecting portion is plugged into and matched with the slots.

[0009] In some embodiments, the connecting part includes a fixed rod and an elastic rod arranged in parallel, a gap is left between the fixed rod and the elastic rod, and the fixed rod and the elastic rod are both connected to the hinge part, and a protrusion is provided at one end of the elastic rod away from the hinge part, and the protrusion protrudes from the slot.

[0010] In some embodiments, limiting grooves are symmetrically provided at both ends of the magnetic core, and the fixing member is provided in the limiting grooves.

[0011] In some embodiments, the base includes a fixing frame, four mounting blocks are symmetrically provided at two ends of the fixing frame, and the connecting member is provided on the mounting blocks.

[0012] In some embodiments, a mounting groove is provided on the mounting block, and the connecting member includes a groove-shaped patch, the groove-shaped patch is installed in the mounting groove, a connecting piece is provided on the top surface of the groove-shaped patch, and the connecting piece is connected to the coil.

[0013] In summary, the utility model has the following beneficial effects:

[0014] This type of chip inductor is equipped with a fixing device between the base and the partition, which can provide additional support for the fixation of the magnetic core and strengthen the connection strength between the magnetic core and the base, which can effectively improve the structural stability of the inductor, prevent the displacement of internal components, reduce the frequency of core shaking, and avoid breakage or cold welding at the welding point between the coil and the patch, thereby affecting the stability and reliability of the entire circuit; at the same time, the detachable connection design between the fixing device and the base facilitates installation and disassembly, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the utility model without the fixing device;

[0017] Figure 3 This is a structural diagram of the utility model without the fixing device and the connecting piece.

[0018] In the figure: 1. base; 11. slot; 12. fixing frame; 13. mounting block; 2. magnetic core; 21. limiting slot; 3. partition; 31. rotating slot; 4. coil; 5. fixing device; 51. hinge part; 52. connecting part; 6. connecting piece; 61. slot-shaped patch; 62. connecting piece; 7. rotating shaft. DETAILED DESCRIPTION

[0019] 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 them. 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.

[0020] refer to Figure 1-3 A chip inductor includes a base 1, a magnetic core 2, a partition 3, a coil 4 and a fixing device 5; the base 1 carries the entire inductor and can be made of insulating materials such as plastic, etc. A groove is provided in the middle of the base 1 for placing the magnetic core 2. A partition 3 is provided in the middle of the magnetic core 2, and coils 4 are provided on both sides of the partition 3. The coils 4 are wound on the magnetic core 2. The fixing device 5 includes two fixing parts, which are symmetrically arranged at both ends of the partition 3. The fixing parts are arranged between the partition 3 and the base 1, and the inner arc surface of the fixing parts contacts the magnetic core 2 to fix the magnetic core. Connectors 6 are provided at the four corners of the base 1, and the connecting parts 6 are connected to the coil 4 and can be connected to an external circuit, so as to connect the coil 4 to the external circuit.

[0021] In some embodiments, the fixing member may be an arc-shaped block, which includes a hinged portion 51 and a connecting portion 52. The hinged portion 51 is hinged to one end of the partition 3, and the connecting portion 52 is detachably connected to the base 1 to facilitate the installation and disassembly of the fixing member. A rotation groove 31 is provided at both ends of the partition 3, and one end of the hinged portion 51 is provided in the rotation groove 31. A rotation shaft 7 is provided through the hinged portion 51 and the rotation groove 31, so that the hinged portion 51 can rotate flexibly in the rotation groove 31, thereby driving the fixing member.

[0022] In some embodiments, slots 11 are provided at both ends of the base 1, and the slots 11 extend from one end surface of the base 1 to the top surface. The connecting portion 52 includes a fixed rod and an elastic rod arranged in parallel, and a gap is left between the fixed rod and the elastic rod, and the fixed rod and the elastic rod are both connected to the hinge portion 51. A protrusion is provided at one end of the elastic rod away from the hinge portion 51, and the protrusion protrudes from the slot 11. Through the elastic force of the elastic rod, the protrusion can protrude and fix the slot 11, thereby realizing the plug-in fit between the connecting portion 52 and the slot 11, so that the fixing piece can be tightly connected to the base 1, and the protrusion can be separated from the slot 11, so that the fixing piece is separated from the base 1, thereby realizing the detachable connection between the fixing piece and the base 1.

[0023] In some embodiments, limiting grooves 21 are symmetrically provided at both ends of the magnetic core 2, and fixing parts are provided in the limiting grooves 21. Through the cooperation between the limiting grooves 21 and the fixing parts, the multi-directional movement of the magnetic core 2 can be restricted, and at the same time, the contact area between the magnetic core 2 and the fixing parts can be increased to improve the limiting effect.

[0024] In some embodiments, the base 1 includes a fixed frame 12, and four mounting blocks 13 are symmetrically provided at both ends of the fixed frame 12. A connector 6 is provided on the mounting block 13 for connecting the inductor with an external circuit; specifically, a mounting groove is provided on the mounting block 13, and the connector 6 includes a groove-shaped patch 61 and a connecting piece 62. The groove-shaped patch 61 is installed in the mounting groove and can be fixed by welding, which can increase the contact area between the groove-shaped patch 61 and the mounting block 13 and improve the connection strength. A connecting piece 62 is provided on the top surface of the groove-shaped patch 61, and the connecting piece 62 is connected to the coil 4. The connection with the external circuit is achieved through the connection of the bottom of the groove-shaped patch 61 and then through the transfer of the connecting piece 62, thereby achieving the connection of the coil 4 with the external circuit, thereby achieving a stable connection of the inductor.

[0025] The specific working principle is as follows:

[0026] The slot-shaped patch 61 is installed on the four mounting blocks 13 of the base 1, and the hinge part 51 is rotated so that the connecting part 52 is located at the top. The magnetic core 2 with the coils 4 wound on both sides is passed through the two fixing devices and placed in the groove of the base 1. At this time, the two coils 4 are arranged on both sides of the partition. The hinge part 51 is rotated so that the connecting part 52 is located at the bottom and inserted into the slot 11. The gap between the fixed rod and the elastic rod becomes smaller under the pressure of the inner wall of the slot 11. When the boss on the elastic rod protrudes from the slot 11, the gap between the fixed rod and the elastic rod is restored to its original size, so that the magnetic core 2 is firmly placed on the base 1, and then the wire ends at both ends of the coil 4 are respectively welded to the connecting piece 62 close to it. The fixed connection between the coil 4 and the connecting piece 62 further improves the stability of the magnetic core 2 on the base 1, effectively improves the structural stability of the inductor, reduces the frequency of shaking of the magnetic core 2, and avoids the welding point between the coil 4 and the patch from being broken or cold-welded, thereby affecting the stability and reliability of the entire circuit.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chip inductor, comprising a base (1), a magnetic core (2) being provided on the base (1), a partition (3) being provided in the middle of the magnetic core (2), coils (4) being provided on both sides of the partition (3), and the coils (4) being wound on the magnetic core (2), characterized in that: It also includes a fixing device (5), the fixing device (5) including two fixing parts, the two fixing parts are symmetrically arranged at the two ends of the partition (3), the fixing parts are arranged between the partition (3) and the base (1), and the inner arc surface of the fixing parts is in contact with the magnetic core (2), and the four corners of the base (1) are provided with connecting parts (6), and the connecting parts (6) are connected to the coil (4).

2. A chip inductor according to claim 1, characterized in that: The fixing member is an arc-shaped block, comprising a hinged portion (51) and a connecting portion (52), wherein the hinged portion (51) is hinged to one end of the partition (3), and the connecting portion (52) is detachably connected to the base (1).

3. A chip inductor according to claim 2, characterized in that: Both ends of the partition plate (3) are provided with a rotation groove (31), one end of the hinged portion (51) is arranged in the rotation groove (31), and a rotation shaft (7) is provided through the hinged portion (51) and the rotation groove (31).

4. A chip inductor according to claim 2, characterized in that: Both ends of the base (1) are provided with slots (11), the slots (11) being arranged through one end surface and the top surface of the base (1), and the connecting portion (52) being plug-fitted into the slots (11).

5. A chip inductor according to claim 4, characterized in that: The connecting portion (52) comprises a fixed rod and an elastic rod arranged in parallel, a gap is left between the fixed rod and the elastic rod, and the fixed rod and the elastic rod are both connected to the hinge portion (51), and a protrusion is provided at one end of the elastic rod away from the hinge portion (51), and the protrusion protrudes from the slot (11).

6. The chip inductor according to claim 1, characterized in that: Limiting grooves (21) are symmetrically provided at both ends of the magnetic core (2), and the fixing piece is provided in the limiting groove (21).

7. The chip inductor according to claim 1, characterized in that: The base (1) comprises a fixing frame (12), four mounting blocks (13) are symmetrically provided at two ends of the fixing frame (12), and the connecting member (6) is provided on the mounting blocks (13).

8. The chip inductor according to claim 7, characterized in that: The mounting block (13) is provided with a mounting groove, the connecting member (6) comprises a groove-shaped patch (61), the groove-shaped patch (61) is installed in the mounting groove, a connecting piece (62) is provided on the top surface of the groove-shaped patch (61), and the connecting piece (62) is connected to the coil (4).

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