Closed magnetic type surface-mounted inductor facing green process

Abstract

The utility model discloses a closed magnetic type surface-mounted inductor for a green process. The closed magnetic type surface-mounted inductor comprises a base, a magnetic core substrate and an outer cover, a first positioning part and a second positioning part are arranged on the base, the periphery of the magnetic core base is in positioning connection with the first positioning part, and the periphery of the outer cover is in positioning connection with the second positioning part. The coil is wound on the periphery of the magnetic core, the pin winding portions are arranged on the periphery of the base, the coil pins on the magnetic core base can be directly wound on the pin winding portions, coil copper wires are used as patch terminals, electroplating materials do not need to be additionally used on the base to manufacture electroplating terminals, and the requirements of surface mounting and green manufacturing procedures can be met. According to the inductor, the first positioning part and the second positioning part are arranged on the base, and the first positioning part and the second positioning part can position the magnetic core base and the outer cover correspondingly, so that the magnetic core base and the outer cover are not prone to shifting or slipping; and the positioning function of the magnetic core base and the outer cover can still be kept under the condition that an electroplating material is canceled.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, and in particular to a closed magnetic surface mounted inductor oriented to a green process. Background Art

[0002] Due to its advantages such as low DC impedance, closed magnetic inductors are the preferred inductors for most users in the market when used in surface mount processes. This inductor is generally composed of a magnetic core, a coil wound around the outer periphery of the magnetic core, and electroplated terminals. Among them, electroplated terminals have been the enemy of green and environmentally friendly components in recent years. The main reason is that the toxic wastewater generated by the process of electroplating terminals has an adverse effect on operators, and improper treatment of wastewater damages the environment. Therefore, more and more users have included green processes as key evaluation projects. However, electroplated terminals can indeed bring surface mount advantages to inductors, and electroplating materials have also become a tool for positioning the magnetic core in the process. Therefore, while considering how to meet the surface mount requirements without using electroplating materials, it is also necessary to consider the positioning of the magnetic core in the process. A closed magnetic inductor that can meet both surface mount requirements and green process requirements is urgently needed. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a closed-magnetic surface mount inductor for green process, which can meet both surface mount requirements and green process requirements.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows: a closed magnetic surface mount inductor for green process, including a base, a magnetic core base and an outer cover; the base is provided with a first positioning portion and a second positioning portion, the outer periphery of the magnetic core base is positioned and connected with the first positioning portion, the outer periphery of the outer cover is positioned and connected with the second positioning portion, and the magnetic core base is installed in the outer cover; a coil is wound around the outer periphery of the magnetic core, and a plurality of pin winding portions are provided around the outer periphery of the base, and the pin winding portions are used to wind the pins of the coil.

[0005] Compared with the prior art, the beneficial effect of the utility model is that: the inductor is provided with a pin winding part on the base, and the coil pin on the magnetic core base can be directly wound on the pin winding part, so as to use the coil copper wire as the patch terminal, and there is no need to use additional electroplating materials on the base to make electroplated terminals, which can also meet the surface mounting requirements and the requirements of green process. In addition, the inductor is provided with a first positioning part and a second positioning part on the base, and the first positioning part and the second positioning part can respectively provide positioning for the magnetic core base and the outer cover, so that the magnetic core base and the outer cover are not easy to shift or slip off, and the positioning function of the magnetic core base and the outer cover can still be maintained when the electroplating material is cancelled.

[0006] The above-mentioned closed magnetic surface mount inductor for green process has a sunken notch between the first positioning portion and the pin winding portion.

[0007] In the above-mentioned closed magnetic surface mount inductor for green process, both sides of the pin winding part are provided with winding grooves, and the winding grooves are connected with the sunken notch.

[0008] The closed magnetic surface mount inductor for green process has a clearance groove inside the outer cover, and the clearance groove, the sinking notch and the winding groove are connected in sequence.

[0009] In the above-mentioned closed magnetic surface mount inductor for green process, the inner side of the second positioning portion is fixedly connected with a third positioning portion, and the bottom of the outer cover is positioned and connected with the third positioning portion.

[0010] In the above-mentioned closed-magnetic surface-mount inductor for green process, the inner periphery of the outer cover is positioned and connected to the first positioning portion.

[0011] In the above-mentioned closed-magnetic surface-mount inductor for green process, the first positioning portion is a plurality of positioning protrusions distributed along the circumference of the base.

[0012] In the above-mentioned closed-magnetic surface-mount inductor for green process, the second positioning portion is a plurality of positioning strips distributed along the circumference of the base.

[0013] In the above-mentioned closed-magnetic surface-mount inductor for green process, the first positioning portion is located inside the second positioning portion, and the first positioning portion and the second positioning portion are staggered along the circumferential direction of the base.

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an inductor according to an embodiment of the utility model;

[0016] Figure 2 for Figure 1 An exploded view of the inductor shown;

[0017] Figure 3 It is a structural schematic diagram of a base of an inductor according to an embodiment of the utility model.

[0018] Description of the accompanying drawings: 100 base, 110 first positioning portion, 120 second positioning portion, 130 pin winding portion, 131 winding groove, 140 sinking notch, 150 third positioning portion, 160 first mounting position, 170 second mounting position, 200 core base, 300 outer cover, 310 positioning hole, 320 give way groove, 400 pin. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below. Figures 1 to 3 The embodiment of the utility model provides a closed magnetic surface mount inductor for green process, including a base 100, a core base 200 and an outer cover 300; the base 100 is provided with a first positioning portion 110 and a second positioning portion 120, the outer periphery of the core base 200 is positioned and connected with the first positioning portion 110, and the outer periphery of the outer cover 300 is positioned and connected with the second positioning portion 120; the core base 200 is used for positioning and installing the magnetic core, the outer periphery of the magnetic core is wound with a coil, and the outer periphery of the base 100 is provided with a plurality of pin winding portions 130, and the pin winding portions 130 are used to wind the pins 400 of the coil.

[0020] The inductor is provided with a pin winding portion 130 on the base 100, and the coil pin 400 on the magnetic core base 200 can be directly wound on the pin winding portion 130, so as to use the coil copper wire as the patch terminal, and there is no need to use additional electroplating materials on the base 100 to make electroplated terminals, which can also meet the surface mounting requirements and the requirements of green processes. In addition, the inductor is provided with a first positioning portion 110 and a second positioning portion 120 on the base 100, and the first positioning portion 110 and the second positioning portion 120 can respectively provide positioning for the magnetic core base 200 and the outer cover 300, so that the magnetic core base 200 and the outer cover 300 are not easy to shift or slip, and the positioning function of the magnetic core base 200 and the outer cover 300 can still be maintained when the electroplating material is cancelled.

[0021] Further, refer to Figure 2 and Figure 3 , the first positioning portion 110 is a plurality of positioning protrusions distributed along the circumference of the base 100, and the second positioning portion 120 is a plurality of positioning strips distributed along the circumference of the base 100. Thus, the outer cover 300 and the magnetic core base 200 can be positioned at multiple positions in the circumferential direction to improve the positioning effect. The base 100 has a first mounting position 160 and a second mounting position 170, wherein the first mounting position 160 is surrounded by a plurality of positioning protrusions. During installation, the magnetic core base 200 is placed in the first mounting position 160, and then under the positioning effect of the first positioning portion 110, the magnetic core base 200 can be positioned and installed to the base 100. The second mounting position 170 is surrounded by a plurality of positioning protrusions and a plurality of positioning strips. During installation, the outer cover 300 is plugged into the second mounting position 170, and then under the positioning effect of the second positioning portion 120, the outer cover 300 can be positioned and installed to the base 100.

[0022] Furthermore, in some embodiments, the inner periphery of the outer cover 300 can also be positioned and connected with the first positioning portion 110, that is, the first positioning portion 110 can not only position the outer periphery of the magnetic core base 200, but also position the inner periphery of the outer cover 300, so as to improve the positioning effect and avoid the influence caused by the processing error. Furthermore, the first positioning portion 110 is located on the inner side of the second positioning portion 120, and the first positioning portion 110 and the second positioning portion 120 are staggered along the circumference of the base 100, so as to increase the number of positioning points of the outer cover 300, and further improve the positioning effect of the base 100 on the outer cover 300. Specifically, the inner wall surface and the outer wall surface of the first positioning portion 110 are both arc surfaces, the inner wall surface can fit the outer periphery of the magnetic core base 200, and the outer wall surface can fit the inner periphery of the outer cover 300. In addition, in some embodiments, the third positioning portion 150 can be fixedly connected to the inner side of the second positioning portion 120, and the bottom of the outer cover 300 is positioned and connected to the third positioning portion 150, so that the outer cover 300 can be positioned from three directions, thereby improving the positioning effect of the outer cover 300. While ensuring the positioning effect of the outer cover 300, the third positioning portion 150 can also lift the outer cover 300, so that there is a certain gap between the outer cover 300 and the inner bottom surface of the base 100, so as to facilitate the lead-out of the pin 400. Of course, it can be understood that the second positioning portion 120 is higher than the third positioning portion 150.

[0023] Furthermore, there is a semicircular sunken notch 140 between the first positioning portion 110 and the pin winding portion 130, so that the coil pin 400 can be led out from here. There are winding grooves 131 on both sides of the pin winding portion 130, and the winding grooves 131 are connected with the sunken notch 140, so that the pin 400 led out from the sunken notch 140 can be wound to the pin winding portion 130 to avoid excessive bending of the pin 400. A positioning hole 310 is provided in the outer cover 300, and the positioning hole 310 is used to position and plug the magnetic core base 200. The outer cover 300 has a clearance groove 320 inside, which is set at the four corners of the positioning hole 310, and the clearance groove 320, the sunken notch 140 and the winding groove 131 are connected in sequence. The setting of the clearance groove 320 can facilitate the coil pin 400 to be led out from the inner part of the outer cover 300 through the sunken notch 140 after routing.

[0024] This inductor is an environmentally friendly green electronic component. The entire product does not use electroplating terminals, and no electroplating materials are used in the entire process. It is a structural design that can reduce environmental pollution to almost zero. As a closed magnetic inductor, this inductor still maintains the function of resisting EMI interference, and can achieve high-frequency applications, high-inductance filter applications, and low-frequency power inductor application designs. In particular, in the design of the patch base 100, the positioning function of the base 100, the outer cover 300, and the magnetic core base 200 is maintained. The use of coil copper wire as the patch terminal can not only meet the needs of surface mounting without using electroplating materials, but also increase the voltage resistance of the inductor to the PCB.

[0025] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A closed magnetic surface mount inductor for green process, characterized in that: It comprises a base (100), a magnetic core base (200) and an outer cover (300); The base (100) is provided with a first positioning portion (110) and a second positioning portion (120); the outer periphery of the magnetic core base (200) is positioned and connected to the first positioning portion (110); the outer periphery of the outer cover (300) is positioned and connected to the second positioning portion (120); and the magnetic core base (200) is installed in the outer cover (300); A coil is wound around the outer periphery of the magnetic core, and a plurality of pin winding portions (130) are provided on the outer periphery of the base (100), wherein the pin winding portions (130) are used to wind the pins (400) of the coil.

2. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: A sunken notch (140) is provided between the first positioning portion (110) and the pin winding portion (130).

3. The green process-oriented closed magnetic surface mount inductor according to claim 2, characterized in that: The pin winding portion (130) has winding grooves (131) on both sides, and the winding grooves (131) are connected to the sinking notch (140).

4. The green process-oriented closed magnetic surface mount inductor according to claim 3, characterized in that: The outer cover (300) has a clearance groove (320) inside, and the clearance groove (320), the sinking notch (140) and the winding groove (131) are connected in sequence.

5. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: A third positioning portion (150) is fixedly connected to the inner side of the second positioning portion (120), and the bottom of the outer cover (300) is positioned and connected to the third positioning portion (150).

6. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: The inner periphery of the outer cover (300) is positioned and connected to the first positioning portion (110).

7. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: The first positioning portion (110) is a plurality of positioning protrusions distributed along the circumference of the base (100).

8. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: The second positioning portion (120) is a plurality of positioning strips distributed along the circumference of the base (100).

9. The green process-oriented closed magnetic surface mount inductor according to claim 1, characterized in that: The first positioning portion (110) is located inside the second positioning portion (120), and the first positioning portion (110) and the second positioning portion (120) are staggered along the circumferential direction of the base (100).

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