CN210489380U

CN210489380U - Stable magnetic core

Info

Publication number: CN210489380U
Application number: CN201921500921.9U
Authority: CN
Inventors: 盛明刚; 汪洪伟; 王强
Original assignee: Sichuan Jingweida Science And Technology Group Co ltd
Current assignee: Sichuan Jingweida Science And Technology Group Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-08
Anticipated expiration: 2029-09-10

Abstract

The utility model relates to an inductance equipment field discloses a firm type magnetic core, including the magnetic core body, the magnetic core body includes first end, second end and wire winding portion, first end, second end are located respectively the both ends head of wire winding portion constitutes the I shape structure, the bottom surface of first end, second end all is provided with first welding, just one or more lateral walls of first end all are provided with second welding, one or more lateral walls of second end all are provided with second welding. The utility model discloses the technological effect who has, the bottom surface through first end, second end all is provided with first welding, and the lateral wall of first end and second end is provided with second welding, makes the area of weld between magnetic core and the PCB board increase to increase the welding strength of magnetic core, improved the steadiness of magnetic core.

Description

Stable magnetic core

Technical Field

The utility model relates to an inductance equipment field particularly, relates to a firm type magnetic core.

Background

Magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials. While ferrite cores are commonly used in coils and transformers for various electronic devices. The traditional IF magnetic core is formed by sintering nickel zinc, and then electroplating end silver at a bonding pad position for wire welding. However, the area of the bonding pad of the existing product is small, the requirement on wire welding is high, and the welding area of the bonding pad and the PCB is small, so that the tensile capacity of the magnetic core is weak, and the product is easy to fall off to cause product open circuit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a firm type magnetic core, it is little that it has solved current product pad area, and is higher to wire welding requirement, and pad and PCB board welding area are little for the tensile ability of magnetic core is weak, leads to the product to drop easily and causes the problem that the product was opened a way.

The embodiment of the utility model is realized like this:

the utility model provides a firm type magnetic core, includes the magnetic core body, the magnetic core body includes first end, second end and wire winding portion, first end, second end are located respectively the both ends head of wire winding portion constitutes the I shape structure, the bottom surface of first end, second end all is provided with first welding, just one or more lateral walls of first end all are provided with second welding, one or more lateral walls of second end are provided with second welding.

In a further aspect, the first and second solder connections are both solder pads.

In a further aspect, the second welding parts are disposed on a plurality of side walls of the first end portion, and the second welding parts are disposed on a plurality of side walls of the second end portion.

In a further aspect, a plurality of second welding parts are disposed on each of the plurality of side walls of the first end portion, and a plurality of second welding parts are disposed on each of the plurality of side walls of the second end portion.

In a further aspect, the second weldment is disposed on only one side wall of the first end portion, and the second weldment is disposed on only one side wall of the second end portion.

In a further aspect, a plurality of second welds are disposed on only one side wall of the first end portion and a plurality of second welds are disposed on only one side wall of the second end portion.

In a further aspect, the right side wall of the first end portion is connected to the winding portion, two feet of the left side wall of the first end portion are respectively provided with a second welding part, the left side wall of the second end portion is connected to the winding portion, and two feet of the right side wall of the second end portion are respectively provided with a second welding part.

In a further aspect, the second weldment on the first end and the second weldment on the second end are symmetrically disposed with respect to the winding portion.

In a further aspect, the second weldment on the first end and the second weldment on the second end are asymmetrically disposed with respect to the wire wrap.

The utility model has the advantages that:

the bottom surface through first end, second end all is provided with first welding, and the lateral wall of first end and second end is provided with the second welding, makes the area of weld between magnetic core and the PCB board increase to the welding strength of increase magnetic core has improved the steadiness of magnetic core.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a top view of a stable magnetic core according to an embodiment of the present invention;

fig. 2 is a side view of a stable magnetic core according to an embodiment of the present invention;

fig. 3 is a front view of the stable magnetic core provided by the embodiment of the present invention when it is welded on a PCB.

Icon: 1-a first end, 2-a second end, 3-a winding, 4-a first solder, 5-a second solder, 6-a solder plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present embodiment provides a stable magnetic core, which includes a magnetic core body, and the magnetic core body includes a first end portion 1, a second end portion 2, and a winding portion 3. Wherein, the first end part 1 and the second end part 2 are respectively arranged at two ends of the winding part 3 to form an I-shaped structure. The bottom surfaces of the first end part 1 and the second end part 2 are both provided with a first welding part 4, and the side walls of the first end part 1 and the second end part 2 are provided with a second welding part 5. Conventional IF magnets have been plated with terminal silver at the bond pad location for wire bonding. However, the area of the bonding pad of the existing product is small, the requirement on wire welding is high, and the welding area of the bonding pad and the PCB is small, so that the tensile capacity of the magnetic core is weak, and the product is easy to fall off to cause product open circuit. And the bottom surface through first end portion 1, second end portion 2 all is provided with first welding 4 in this scheme, and the lateral wall of first end portion 1 and second end portion 2 is provided with second welding 5, makes the increase of welding area between magnetic core and the PCB board to the welding strength of increase magnetic core has improved the steadiness of magnetic core.

Specifically, the first solder part 4 and the second solder part 5 in this embodiment are both pads. The side walls of the first end part 1 and the second end part 2 are provided with second welding parts 5, the second welding parts 5 are welding pads, and a welding tin surface 6 is formed after the side wall of the magnetic core is welded with a plate, so that the welding area is increased by 30-50%. And the welding mode of the magnetic core is changed when the area of the bonding pad is increased, so that the tensile strength of the magnetic core is enhanced, and the assisting direction of the magnetic core when the magnetic core is subjected to tensile force is changed because the side wall is connected with the PCB, so that the peeling force of an actual product is increased by 25-60%. The stability of magnetic core welding after the PCB board has been improved greatly.

In the present embodiment, the second welding member 5 is provided on only one side wall of the first end portion 1, and the second welding member 5 is provided on only one side wall of the second end portion 2. As a specific embodiment, in the present embodiment, the right side wall of the first end portion 1 is connected to the winding portion 3, two feet of the left side wall of the first end portion 1 are respectively provided with one second welding member 5, the left side wall of the second end portion 2 is connected to the winding portion 3, and two feet of the right side wall of the second end portion 2 are respectively provided with one second welding member 5. Under the condition of ensuring stable connection, the position and the size of the product bonding pad can be adjusted according to special requirements of different products, application environments and the like. The position and size of the bonding pad are not limited herein. And under the condition that the product PCB board face allows and the product demand, also can all set up second welding piece 5 on a plurality of lateral walls of first end 1 and second end 2, further increase the connection area, improve the steadiness behind the magnetic core welds the PCB board. Further, a fixing mode that two second welding pieces 5 are arranged on a plurality of side walls can be adopted, and the stability of the magnetic core is further enhanced. And it is easy to understand, meanwhile, in this scheme, the number of the second welding parts 5 on the side walls of the first end part 1 and the second end part 2 is two. But may be three, four, or more than four.

In the present embodiment, the second welding members 5 on the first end portion 1 and the second welding members 5 on the second end portion 2 are provided symmetrically with respect to the winding portion 3. It is easy to understand that, in the case of ensuring the stable fixation of the magnetic core and the PCB, the second welding part 5 on the first end portion 1 and the second welding part 5 on the second end portion 2 may also be disposed asymmetrically with respect to the winding portion 2.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a firm type magnetic core, its characterized in that, includes the magnetic core body, the magnetic core body includes first end, second end and wire winding portion, first end, second end are located respectively the both ends end constitution I shape structure of wire winding portion, the bottom surface of first end, second end all is provided with first welding, just one or more lateral walls of first end all are provided with second welding, one or more lateral walls of second end all are provided with the second welding.

2. A robust magnetic core in accordance with claim 1, wherein said first and second weldment are both solder pads.

3. A robust magnetic core according to claim 1, wherein said second welds are provided on side walls of said first end portion and said second welds are provided on side walls of said second end portion.

4. A robust magnetic core according to claim 3, wherein a plurality of second welds are provided on each of the plurality of side walls of said first end portion and a plurality of second welds are provided on each of the plurality of side walls of said second end portion.

5. A robust magnetic core according to claim 1, wherein said second weld is provided on only one side wall of said first end portion and said second weld is provided on only one side wall of said second end portion.

6. A robust magnetic core according to claim 5, wherein said first end portion is provided with a plurality of second welds on only one side wall and said second end portion is provided with a plurality of second welds on only one side wall.

7. A robust magnetic core according to claim 6, wherein said right side wall of the first end portion is connected to said winding portion, said two feet of the left side wall of the first end portion are provided with one second weld, respectively, said left side wall of the second end portion is connected to said winding portion, said two feet of the right side wall of the second end portion are provided with one second weld, respectively.

8. A robust magnetic core in accordance with claim 1, wherein the second weldment on the first end and the second weldment on the second end are symmetrically disposed with respect to the winding.

9. A robust magnetic core in accordance with claim 1, wherein the second weld on the first end and the second weld on the second end are asymmetrically arranged with respect to the winding.