Terminal of assembled inductor and assembled inductor

Abstract

The utility model discloses a terminal of an assembled inductor and the assembled inductor. The terminal comprises a terminal top part, two terminal middle parts, two terminal foot parts and a widening part, the two terminal middle parts are respectively positioned at a first end and a second end which are opposite to each other of the terminal top part, and the two terminal middle parts respectively extend downwards from the first end and the second end; the two terminal foot parts are respectively arranged at one ends, far away from the terminal top part, of the two terminal middle parts, and the widening part is positioned at a third end of the terminal top part and transversely extends outwards from the third end. According to the utility model, the direct current resistance of the terminal is reduced, the copper loss is effectively reduced, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a terminal of an assembled inductor and the assembled inductor. Background Art

[0002] Assembled high-current inductors are used to measure high currents. They consist of multiple components that can be assembled and disassembled as needed. They are commonly used in power systems to measure current in high-voltage lines.

[0003] Current assembled high current inductors, such as Figure 1-4 As shown, the terminal 9 is composed of an X-shaped terminal 9 and a magnetic core 6. The terminal 1 is formed by bending or stamping. The top, middle and foot of the terminal 1 have the same width. Its relative DCR (DC Resistance) is large, and the copper loss of the product is high.

[0004] It should be noted that the information disclosed in the above background technology section is only used to understand the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the present invention provides a terminal of an assembled inductor and an assembled inductor.

[0006] The technical problems of the present invention are solved by the following technical solutions:

[0007] In a first aspect, a terminal of an assembled inductor is provided, comprising a terminal top, two terminal middle portions, two terminal legs, and a widened portion, wherein the two terminal middle portions are respectively located at two opposite first and second ends of the terminal top, and the two terminal middle portions extend downward from the first and second ends, respectively, the two terminal legs are respectively arranged at one end of the two terminal middle portions away from the terminal top, and the widened portion is located at a third end of the terminal top and extends laterally outward from the third end.

[0008] Preferably, there are two widened portions, and the two widened portions are respectively located at the third end and the fourth end of the top of the terminal, and extend laterally outward from the third end and the fourth end respectively.

[0009] Preferably, the top surface and the bottom surface of the widened portion are flush with the top surface and the bottom surface of the terminal top, respectively.

[0010] Preferably, the cross-section of the top of the terminal is a rectangle, the first end and the second end are respectively on the narrow sides of the rectangle, and the third end and the fourth end are opposite to each other and are respectively on the wide sides of the rectangle.

[0011] Preferably, the middle parts of the two terminals are L-shaped and consist of a first column and a second column, the two first columns are located at the two opposite first and second ends of the top of the terminal, and extend downward from the first and second ends respectively, and the two second columns are respectively located at the ends of the two first columns away from the top of the terminal and extend laterally outward from the corresponding first columns.

[0012] Preferably, the two terminal legs are respectively located at one end of the two second columns away from the first column and extend downward.

[0013] Preferably, two second widened portions are further provided at opposite ends of each terminal foot, and the two second widened portions extend laterally outward.

[0014] Preferably, the terminal is integrally formed.

[0015] In a second aspect, an assembled inductor is provided, comprising the terminals and a magnetic core described in the first aspect, wherein the middle portions of the two terminals of the terminal are located inside the magnetic core, the top of the magnetic core has a notch, the two terminal feet are located at the bottom of the magnetic core and are exposed, the top of the terminal is exposed at the top of the magnetic core, and the widened portion is located in the notch at the top of the magnetic core and is exposed.

[0016] Preferably, the magnetic core is assembled from a first magnetic core and a second magnetic core.

[0017] The beneficial effects of the present invention compared with the prior art include:

[0018] The utility model increases the cross-sectional area of ​​the terminal top by arranging a widened portion at the terminal top, thereby reducing the overall DC resistance of the terminal and effectively reducing copper loss; the widened portion also increases the exposed cross-sectional area of ​​the conductor, thereby improving the heat dissipation effect of the terminal.

[0019] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the terminals of the assembled inductor in the prior art.

[0021] Figure 2 This is a front view of the terminals of a conventional assembled inductor.

[0022] Figure 3 It is a side view of the terminals of a conventional assembled inductor.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of an assembled inductor in the prior art.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the terminal of the preferred embodiment of the utility model.

[0025] Figure 6 This is another schematic diagram of the three-dimensional structure of the terminal of the preferred embodiment of the present utility model.

[0026] Figure 7 It is a front view of the terminal of the preferred embodiment of the present utility model.

[0027] Figure 8 It is a top view of the terminal of the preferred embodiment of the present utility model.

[0028] Figure 9 It is a side view of the terminal of the preferred embodiment of the present utility model.

[0029] Figure 10 It is a schematic diagram of the three-dimensional structure of the first magnetic core 1 of the assembled inductor according to the preferred embodiment of the present utility model.

[0030] Figure 11 3D is a schematic diagram of the three-dimensional structure of the second magnetic core 3 of the assembled inductor according to a preferred embodiment of the present invention.

[0031] Figure 12 It is a schematic diagram of the combined structure of the first magnetic core 1 and the terminal 2 of the assembled inductor in a preferred embodiment of the present utility model.

[0032] Figure 13 It is a schematic diagram of the three-dimensional structure of the assembled inductor according to an embodiment of the present utility model.

[0033] Figure 14 It is a schematic inverted three-dimensional structure diagram of the assembled inductor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0035] It should be noted that the directional terms such as left, right, up, down, top, and bottom in this embodiment are merely relative concepts, or are based on the normal use status of the product, and should not be considered as restrictive.

[0036] In such Figure 1-4In actual applications of the conventional assembled inductor, the inventors discovered that the top of the magnetic core is rarely utilized. This led them to the idea that if the unused portion of the top of the magnetic core could be removed, leaving space for the terminal, and the terminal top could be widened to fill the space left by the removal, the terminal's DCR could be reduced. Therefore, the inventive concept of the present invention is to widen the terminal top based on the discovery of the unused portion of the top of the magnetic core. This increases the terminal's cross-sectional area, reduces the terminal's overall DC resistance, and effectively reduces copper loss. The widened portion also increases the exposed conductor cross-sectional area, improving the terminal's heat dissipation.

[0037] like Figure 5-14 As shown, in an embodiment of the present invention, a terminal 2 of an assembled inductor is proposed, wherein the terminal 2 includes a terminal top 4, two terminal middle portions 5, two terminal legs 7 and a widened portion 8. The two terminal middle portions 5 are respectively located at two opposite first ends 41 and second ends 42 of the terminal top 4, and the two terminal middle portions 5 extend downward from the first end 41 and the second end 42, respectively. The two terminal legs 7 are respectively arranged at one end of the two terminal middle portions 5 away from the terminal top 4, and the widened portion 8 is located at the third end 43 of the terminal top 4 and extends laterally outward from the third end 43.

[0038] In a preferred embodiment, Figure 5-9 As shown, there are two widened portions 8 , which are respectively located at the third end 43 and the fourth end 44 of the terminal top 4 and extend laterally outward from the third end 43 and the fourth end 44 .

[0039] In a preferred embodiment, Figure 5-9 As shown, the top surface of the widened portion 8 is flush with the top surface of the terminal top 4 , and the bottom surface of the widened portion 8 is flush with the bottom surface of the terminal top 4 .

[0040] In a preferred embodiment, Figure 5-9 As shown, the cross section of the terminal top 4 is a rectangle, the first end 41 and the second end 42 are respectively on the narrow side of the rectangle, and the third end 43 and the fourth end 44 are opposite and respectively on the wide side of the rectangle.

[0041] In a preferred embodiment, Figure 5-9 As shown, the two terminal middle portions 5 are both L-shaped and consist of a first column 51 and a second column 52. The two first columns 51 are located at the two opposite first ends 41 and the second end 42 of the terminal top 4, and extend downward from the first end 41 and the second end 42 respectively. The two second columns 52 are respectively located at the end of the two first columns 51 away from the terminal top 4 and extend laterally outward from the corresponding first column 51.

[0042] In a preferred embodiment, Figure 5-9 As shown, the two terminal legs 7 are respectively located at one end of the two second columns 52 away from the first column 51 and extend downward.

[0043] In a preferred embodiment, Figure 5-9 As shown, two second widened portions 71 are further provided at opposite ends of each terminal foot 7 , and the two second widened portions 71 extend laterally outward.

[0044] In a preferred embodiment, the terminal is integrally formed. For example, the provided substrate is subjected to ① punching → ② initial punching → ③ preliminary forming → ④ thinning → ⑤ fine punching → ⑥ trimming → ⑦ secondary forming → ⑧ electroplating to form an integrally formed terminal.

[0045] In the above preferred embodiment, widening the position of the top of the terminal can increase the local cross-sectional area of ​​the terminal, reduce the DCR of the terminal, effectively reduce copper loss and effectively improve the heat dissipation effect of the product.

[0046] The present invention also provides an assembled inductor. Figure 5-14 As shown, the assembled inductor includes the terminal 2 and the magnetic core of the above embodiment, the two terminal middle parts 5 of the terminal 2 are located in the magnetic core, the top of the magnetic core has a notch, the two terminal feet 7 are located at the bottom of the magnetic core and exposed to the outside, the terminal top 4 is exposed at the top of the magnetic core, and the widened part 8 is located in the notch at the top of the magnetic core and exposed to the outside.

[0047] In a preferred embodiment, the magnetic core is assembled from a first magnetic core 1 and a second magnetic core 3. In a preferred embodiment having two widened portions 8, during manufacturing, the tops of the first magnetic core 1 and the second magnetic core 3 are cut away at locations corresponding to the two widened portions 8 to form a first notch 11 and a second notch 31, respectively. After the first magnetic core 1 and the second magnetic core 3 are assembled into a completed magnetic core, the terminal top 4 is exposed at the top of the magnetic core, and the two widened portions 8 are located in the notches 11 and 31 at the top of the magnetic core and are exposed.

[0048] In this embodiment of the utility model, the top of the magnetic core of the assembled inductor is cut off to leave space for the terminal, thereby widening the top of the terminal and increasing the local cross-sectional area, thereby reducing the DCR (DC Resistance) of the terminal and effectively reducing copper loss. At the same time, the increase in the exposed cross-sectional area of ​​the conductor increases the area of ​​contact between the conductor and the air, which also improves the heat dissipation effect of the product.

[0049] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, it is possible to make several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and the performance or use are the same, and all of them should be considered to fall within the scope of protection of the present invention.

Claims

1. A terminal of an assembled inductor, characterized in that: The terminal includes a terminal top, two terminal middle parts, two terminal feet and a widened portion, the two terminal middle parts are respectively located at two opposite first ends and second ends of the terminal top, and the two terminal middle parts extend downward from the first end and the second end respectively, the two terminal feet are respectively arranged at one end of the two terminal middle parts away from the terminal top, and the widened portion is located at the third end of the terminal top and extends laterally outward from the third end.

2. The terminal of the assembled inductor according to claim 1, wherein: There are two widened portions, which are respectively located at the third end and the fourth end of the top of the terminal and extend laterally outward from the third end and the fourth end respectively.

3. The terminal of the assembled inductor according to claim 1 or 2, characterized in that: The top surface and the bottom surface of the widened portion are flush with the top surface and the bottom surface of the terminal top, respectively.

4. The terminal of the assembled inductor according to claim 2, wherein: The cross-section of the top of the terminal is rectangular, the first end and the second end are respectively on the narrow sides of the rectangle, and the third end and the fourth end are opposite to each other and are respectively on the wide sides of the rectangle.

5. The terminal of the assembled inductor according to claim 1 or 2, characterized in that: The middle parts of the two terminals are both L-shaped and consist of a first column and a second column. The two first columns are located at the two opposite first and second ends of the top of the terminal and extend downward from the first and second ends respectively. The two second columns are respectively located at the ends of the two first columns away from the top of the terminal and extend laterally outward from the corresponding first columns.

6. The terminal of the assembled inductor according to claim 5, wherein: The two terminal legs are respectively located at ends of the two second columns away from the first column and extend downward.

7. The terminal of the assembled inductor according to claim 2, wherein: Two second widened portions are further provided at opposite ends of each terminal foot, and the two second widened portions extend laterally outward.

8. The terminal of the assembled inductor according to claim 1, wherein: The terminal is integrally formed.

9. An assembled inductor, characterized in that: Comprising the terminal and magnetic core according to any one of claims 1 to 8, the middle parts of the two terminals of the terminal are located inside the magnetic core, the top of the magnetic core has a notch, the two terminal feet are located at the bottom of the magnetic core and exposed to the outside, the top of the terminal is exposed at the top of the magnetic core, and the widened part is located in the notch at the top of the magnetic core and exposed to the outside.

10. The assembled inductor according to claim 9, wherein: The magnetic core is assembled from a first magnetic core and a second magnetic core.

Images