Quickly-assembled novel annular chip inductor

Abstract

The utility model discloses a novel fast-assembly annular chip inductor, which relates to the technical field of chip inductors and comprises an insulating shell, a magnetic ring in an inner cavity of the insulating shell and a winding wound on the magnetic ring, and the insulating shell is provided with a bottom opening; notch areas are formed in the four corners of the insulating shell and provided with wire outlets communicated with an inner cavity of the insulating shell. Conducting pieces are arranged on the periphery of the bottom of the insulating shell, and winding pieces are arranged on the tops of the conducting pieces and penetrate through the insulating shell to extend into the notch area. In the assembling process, the magnetic ring wound with the winding is placed in the inner cavity of the insulating shell, then the pin wire of the winding is led out from the wire outlet to the notch area to be connected with the wire winding piece, the winding normally acts in a PCB circuit through the wire winding piece and the conducting strip, and therefore the magnetic ring is not prone to being damaged. The pin wire of the winding led out from the top is connected with the wire winding sheet, so that the inductor is convenient to assemble, the consumption of labor cost is reduced, and the capacity of the inductor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of patch inductors, in particular to a novel fast-assembly annular patch inductor. Background Art

[0002] SMT inductors, also known as chip inductors, are miniaturized passive electronic components designed specifically for automated surface mount processes. These inductors typically have a compact structure that allows for high-density assembly on PCBs (printed circuit boards).

[0003] In the prior art, chip inductors are typically assembled by placing a wound magnetic ring into an insulating housing, then leading the winding lead wires out from the bottom of the insulating housing and wiring them to the pins. For example, the Chinese patent "A High-Current Chip Inductor" published with publication number CN210535478U includes a wound inductor and a base (insulating housing). The base has a chamber with a positioning post in the chamber, and the wound inductor is placed in the chamber and sleeved on the positioning post. Two winding spools are provided on the outer wall of the base, and a wiring opening corresponding to each winding spool is opened on the top of the base. The two taps (lead wires) of the wound inductor are respectively wound on each winding spool through the corresponding wiring openings.

[0004] However, since chip inductors are generally small in size, the assembly method of leading the pin wires from the bottom will make the inductor assembly difficult. In addition, when the pin wires are led out from the bottom, the routing port is used. However, during the wiring process, the pin wires passing through the routing port need to be shaped to avoid bending and warping of the pin wires. Otherwise, it is easy to cause the bottom of the inductor to be uneven, which will cause difficulties in the subsequent soldering and fixation of the chip inductor. For example, an uneven soldering surface will lead to loose soldering.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the problem of difficulty in operation caused by leading out the pin wires from the bottom during assembly of the chip inductor, thereby affecting the assembly efficiency.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a novel ring-shaped patch inductor for quick assembly, comprising an insulating housing, a magnetic ring in an inner cavity of the insulating housing, and a winding wound around the magnetic ring, wherein the insulating housing has a bottom opening;

[0008] The insulating shell is formed with a notch area at each of the four corners, and the notch area has a wire outlet communicating with the inner cavity of the insulating shell;

[0009] Conductive sheets are provided around the bottom of the insulating shell, and a wire wrapping sheet is provided on the top of the conductive sheet. The wire wrapping sheet passes through the insulating shell and extends into the notch area.

[0010] The winding leads out with a lead wire, and the lead wire passes through a wire outlet and is connected to a winding sheet.

[0011] As a further solution of the present invention: a through hole connected to the bottom of the insulating shell is opened on the bottom surface of the notch area, and the winding sheet passes through the through hole to the notch area.

[0012] As a further solution of the present invention: the pin wire is wound around the wire winding piece, and the pin wire and the wire winding piece are welded.

[0013] As a further solution of the present invention: a wire groove extending from the top downward to a certain length is opened on the winding plate, and a first bent piece and a second bent piece are formed on the upper end of the winding plate through the wire groove, and the first bent piece and the second bent piece are bent to opposite sides respectively.

[0014] As a further solution of the present invention: the conductive sheet is bent at 90 degrees to form a transverse portion and a longitudinal portion, the winding sheet is connected to the transverse portion, the transverse portion is in contact with the bottom surface of the insulating shell, and the longitudinal portion is in contact with the side surface of the insulating shell.

[0015] As a further solution of the present invention: the conductive sheet and the wire winding sheet are integrally formed.

[0016] Compared with the prior art, the beneficial effects of the present technical solution are as follows: during the assembly process of the present invention, the magnetic ring with the wound winding is placed in the inner cavity of the insulating housing, and then the pin wires of the winding are led out from the wire outlet into the notch area, and then the pin wires are connected to the winding sheet. The winding is electrically connected to the PCB using the winding sheet and the conductive sheet, so that the chip inductor can function normally in the PCB board circuit. By leading the pin wires of the winding from the top and connecting them to the winding sheet, the assembly of the inductor can be facilitated and simplified, the assembly labor cost is reduced, and the inductor production capacity is increased. At the same time, the pin wires 301 are avoided from being led out from the bottom, which may cause the bottom of the inductor to be uneven.

[0017] At the same time, the four conductive sheets with flat bottom surfaces allow the chip inductor to be placed stably on the PCB, thus ensuring that the chip inductor can be firmly soldered during subsequent soldering;

[0018] By bending the first bent piece and the second bent piece to opposite sides respectively, the upper end of the winding piece is provided with a limiting structure, which facilitates winding the pin wire on the winding piece. At the same time, the bent first bent piece and the second bent piece can also be used to limit the pin wire wrapped on the winding piece to prevent the pin wire from detaching from the top of the winding piece, thereby facilitating the welding of the pin wire and the winding piece.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the first bent piece and the second bent piece of the utility model, with the lead wire wound on the winding piece;

[0023] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0024] Figure 4 This is a schematic diagram of the insulating shell structure of the utility model;

[0025] Figure 5 This is a schematic structural diagram of the first bent piece and the second bent piece of the utility model when they are not bent;

[0026] Figure 6 This is a schematic diagram of the structure of the first bent piece and the second bent piece of the utility model after being bent;

[0027] The corresponding reference numerals in the accompanying drawings are described as follows:

[0028] 1. Insulating shell; 2. Magnetic ring; 3. Winding; 301. Pin wire; 4. Notch area; 401. Wire outlet; 402. Through hole; 5. Conductive sheet; 6. Wire winding sheet; 601. First bend sheet; 602. Second bend sheet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-6A new type of ring-shaped chip inductor that can be quickly assembled includes an insulating housing 1, a magnetic ring 2 in the inner cavity of the insulating housing 1, and a winding 3 wound around the magnetic ring 2. The insulating housing 1 has a bottom opening, and the magnetic ring 2 and the winding 3 can be placed into the inner cavity through the bottom opening of the insulating housing 1. At the same time, after the chip inductor is mounted on the PCB board, the insulating housing can isolate the chip inductor from the outside, provide a certain shielding effect for the inductor, and prevent damage if the inductor is accidentally dropped;

[0031] The insulating housing 1 has notch areas 4 formed at each of its four corners. The notch areas 4 have wire outlets 401 communicating with the inner cavity of the insulating housing 1. The notch areas 4 are configured to form wire outlets 401 communicating with the inner cavity of the insulating housing 1 for the lead wires 301 to be led out from the top. The notch areas 4 also have a bottom surface for supporting the lead wires 301 after being connected to the wire wrapping sheet 6.

[0032] Conductive sheets 5 are provided around the bottom of the insulating shell 1, and a wire wrapping sheet 6 is provided on the top of the conductive sheet 5. The wire wrapping sheet 6 passes through the insulating shell 1 and extends to the notch area 4;

[0033] A lead wire 301 is led out of the winding 3 , and the lead wire 301 passes through the wire outlet 401 and is connected to the winding sheet 6 .

[0034] Specifically, during the assembly process of the present invention, the magnetic ring 2 with the wound winding 3 is placed in the inner cavity of the insulating shell 1, and then the pin wire 301 of the winding 3 is led out from the outlet 401 to the notch area 4, and then the pin wire 301 is connected to the winding piece 6, and the winding piece 6 can pass through the insulating shell 1 and be fixed to the conductive piece 5 set at the bottom, so that when the inductor is patched, the conductive piece 5 is welded and fixed to the welding point, and the winding 3 is electrically connected to the PCB using the winding piece 6 and the conductive piece 5, so that the patch inductor can function normally in the PCB board circuit. By leading out the pin wire 301 of the winding 3 from the top and connecting it with the winding piece 6, the assembly of the inductor can be facilitated and simplified, the consumption of assembly labor cost can be reduced, thereby improving the inductor production capacity, and at the same time avoiding the pin wire 301 being led out from the bottom, causing the bottom of the inductor to become uneven.

[0035] Preferably, a through hole 402 connected to the bottom of the insulating shell 1 is provided on the bottom surface of the notch area 4, and the conductive sheet 5 and the wire winding sheet 6 are integrally formed, and the wire winding sheet 6 passes through the through hole 402 to the notch area 4. After the wire winding sheet 6 passes through the through hole 402, the conductive sheet 5 and the insulating shell 1 can be fixed by gluing.

[0036] Specifically, when assembling the conductive sheet 5 and the wire wrapping sheet 6, the wire wrapping sheet 6 is inserted into the through hole 402 into the notch area 4. Glue can be applied to the top surface of the conductive sheet 5 so that the conductive sheet 5 is glued and fixed to the bottom surface of the insulating housing 1. The bottom surface of the conductive sheet 5 is flat. When the chip inductor is mounted on the PCB, the four conductive sheets 5 with flat bottom surfaces allow the chip inductor to be placed stably on the PCB, thereby ensuring that the chip inductor can be firmly soldered during subsequent soldering.

[0037] At the same time, the conductive sheet 5 and the wire winding sheet 6 are integrally formed, so that the strength of the conductive sheet 5 and the wire winding sheet 6 is guaranteed, and the wire winding sheet 6 is prevented from breaking during the process of inserting the wire winding sheet 6 into the through hole 402 .

[0038] Preferably, the lead wire 301 is wound around the wire winding piece 6 , and the lead wire 301 and the wire winding piece 6 are welded.

[0039] Specifically, after the pin wire 301 is led out from the top through the wire outlet 401 , the pin wire 301 is wound around the wire winding piece 6 and fixed by welding, thereby fixing the pin wire 301 on the wire winding piece 6 .

[0040] Further, such as Figure 1-Figure 2 and Figure 5-Figure 6 As shown, a wire groove extending from the top downward to a certain length is provided on the winding plate 6, and a first bent piece 601 and a second bent piece 602 are formed on the upper end of the winding plate 6 through the wire groove, and the first bent piece 601 and the second bent piece 602 are bent to opposite sides respectively.

[0041] Specifically, by bending the first bent piece 601 and the second bent piece 602 to opposite sides, the upper end of the winding piece 6 is provided with a limiting structure, which facilitates winding the pin wire 301 on the winding piece 6. At the same time, the bent first bent piece 601 and the second bent piece 602 can also limit the pin wire 301 wound on the winding piece 6, preventing the pin wire 301 from detaching from the top of the winding piece 6, thereby facilitating welding of the pin wire 301 and the winding piece 6.

[0042] The conductive sheet 5 and the wire winding sheet 6 are both made of conductive metal, and since the wire winding sheet 6 is thin enough, the first bent sheet 601 and the second bent sheet 602 can be easily bent using pliers.

[0043] Preferably, the conductive sheet 5 is bent at ninety degrees to form a transverse portion and a longitudinal portion, the winding sheet 6 is connected to the transverse portion, the transverse portion is in contact with the bottom surface of the insulating shell 1 , and the longitudinal portion is in contact with the side surface of the insulating shell 1 .

[0044] Specifically, the conductive sheet 5 is bent ninety degrees to form a transverse portion and a longitudinal portion, so that when the conductive sheet 5 is installed, the transverse portion and the longitudinal portion are mechanically bonded to the insulating shell 1, thereby improving the fixing effect of the conductive sheet 5 and effectively preventing the conductive sheet 5 from falling off.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A new type of fast-assembly ring chip inductor, characterized by: It comprises an insulating shell (1), a magnetic ring (2) in an inner cavity of the insulating shell (1), and a winding (3) wound around the magnetic ring (2), wherein the insulating shell (1) has a bottom opening; The insulating housing (1) is formed with notch areas (4) at all four corners, and the notch areas (4) have wire outlets (401) communicating with the inner cavity of the insulating housing (1); Conductive sheets (5) are provided on all sides of the bottom of the insulating shell (1), and a wire wrapping sheet (6) is provided on the top of the conductive sheet (5), and the wire wrapping sheet (6) penetrates the insulating shell (1) and extends into the notch area (4); The winding (3) is led out with a lead wire (301), and the lead wire (301) passes through a wire outlet (401) and is connected to a winding sheet (6).

2. The novel fast-assembly ring-shaped chip inductor according to claim 1 is characterized in that: The bottom surface of the notch area (4) is provided with a through hole (402) connected to the bottom of the insulating shell (1), and the winding sheet (6) passes through the through hole (402) to the notch area (4).

3. The novel fast-assembly ring-shaped chip inductor according to claim 2, characterized in that: The pin wire (301) is wound around the wire winding piece (6), and the pin wire (301) and the wire winding piece (6) are welded.

4. The novel fast-assembly ring-shaped chip inductor according to claim 3 is characterized in that: The winding piece (6) is provided with a wire groove extending downward from the top for a certain length, and a first bent piece (601) and a second bent piece (602) are formed on the upper end of the winding piece (6) through the wire groove, and the first bent piece (601) and the second bent piece (602) are bent to opposite sides respectively.

5. The novel fast-assembly ring-shaped chip inductor according to claim 2, characterized in that: The conductive sheet (5) is bent at ninety degrees to form a transverse portion and a longitudinal portion, the winding sheet (6) is connected to the transverse portion, the transverse portion is in contact with the bottom surface of the insulating shell (1), and the longitudinal portion is in contact with the side surface of the insulating shell (1).

6. The novel fast-assembly ring-shaped chip inductor according to claim 2, characterized in that: The conductive sheet (5) and the wire winding sheet (6) are integrally formed.

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