CN217157909U

CN217157909U - Common mode inductor with easily wound coil terminal

Info

Publication number: CN217157909U
Application number: CN202121103488.2U
Authority: CN
Inventors: 邢海涛
Original assignee: Shenzhen Group Tek Electronics Technology Co ltd
Current assignee: Shenzhen Group Tek Electronics Technology Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-08-09
Anticipated expiration: 2031-05-21

Abstract

The utility model provides an easy winding common mode inductance of coil terminal, it includes casing, magnetic core, coil and four PIN feet. The casing has the holding tank, and the magnetic core setting is in the holding tank. The coil includes first coil and second coil, and first coil and second coil all twine on the magnetic core. The two ends of the first coil are respectively a first terminal and a second terminal, and the two ends of the second coil are respectively a third terminal and a fourth terminal. The PIN foot includes fixed part and stop part, and the fixed part is fixed on the casing, and first terminal, second terminal, third terminal and fourth terminal are fixed respectively on four fixed parts. Be provided with the contained angle between stop part and the fixed part, when each terminal twined respectively on four fixed parts, four stop parts were used for preventing four fixed parts of its roll-off respectively. The utility model provides a pair of easy winding common mode inductance of coil terminal is convenient for each terminal winding on the fixed part to the welding is on the fixed part, thereby is convenient for batch production.

Description

Common mode inductor with easily wound coil terminal

Technical Field

The utility model relates to a common mode inductance technical field, in particular to easy winding common mode inductance of coil terminal.

Background

Common mode inductor (Common mode Choke), also called Common mode Choke, mainly plays a role of filtering, so as to suppress Common mode interference signals in electromagnetic interference, and is commonly used in a switching power supply of a computer. In the board design, the common mode inductor also plays a role in EMI filtering, and is used for inhibiting electromagnetic waves generated by the high-speed signal line from radiating and emitting outwards. In the common mode inductor in the prior art, the winding process of the coil terminal on the PIN PIN is inconvenient to operate, the coil terminal is not easy to weld on the PIN PIN, and the common mode inductor is not suitable for batch production.

Therefore, it is necessary to provide a common mode inductor with easily wound coil terminals to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an easy winding common mode inductance of coil terminal, its first coil and second coil all twine on the magnetic core to fix in the holding tank of casing. When the first terminal and the second terminal of first coil to and the third terminal and the fourth terminal of second coil, twine respectively on four fixed parts of four PIN feet that correspond, block four parts through four of four PIN feet and prevent four fixed parts of its roll-off respectively, be convenient for first terminal, second terminal, third terminal and fourth terminal twine on the fixed part, and weld on the fixed part. The common mode inductor solves the technical problems that the winding process of a coil terminal of the common mode inductor on a PIN PIN is inconvenient to operate, the coil terminal is not easy to weld on the PIN PIN, and the common mode inductor is not suitable for batch production.

In order to solve the technical problem, the utility model adopts the technical scheme that:

a common mode inductor with coil terminals susceptible to winding, comprising:

a housing having an accommodating groove;

a magnetic core disposed in the accommodation groove;

the coil comprises a first coil and a second coil, the first coil and the second coil are wound on the magnetic core, a first terminal and a second terminal are respectively arranged at two ends of the first coil, and a third terminal and a fourth terminal are respectively arranged at two ends of the second coil; and the number of the first and second groups,

four PIN feet, the PIN foot includes fixed part and block portion, the fixed part is fixed on the casing, first terminal the second terminal the third terminal with fourth terminal is fixed respectively four on the fixed part, block portion with be provided with the contained angle between the fixed part, work as first terminal the second terminal the third terminal with fourth terminal twines respectively four when on the fixed part, four the block portion is used for preventing its roll-off four respectively the fixed part.

Coil terminal easy winding common mode inductance in, the stop part with contained angle between the fixed part sets up to 85 degrees-95 degrees.

Coil terminal easy winding common mode inductance in, four the stop part all to the centrifugal direction of casing extends.

In the easy winding common mode inductance of coil terminal, four all be provided with the constant head tank on the fixed part, will first the first terminal the second terminal the third terminal with the fourth terminal is the location winding respectively four in the constant head tank, then will again the first terminal the second terminal the third terminal with the fourth terminal welding is in on the fixed part.

In the easy winding common mode inductance of coil terminal, four the width of constant head tank with first terminal the second terminal the third terminal with the width of fourth terminal is the same.

Coil terminal easy winding common mode inductance in, the casing is the rectangle, four the fixed part vertically sets up on four angles of casing, and with the top of holding tank lies in same one side.

Coil terminal easy winding common mode inductance in, the magnetic core sets up to the annular structure of rectangle, just the rectangle structure is personally submitted in truncation of magnetic core, first coil with the second coil twines respectively two long edges of magnetic core.

Coil terminal easy winding common mode inductance in, be provided with two spacing archs, two on the edge of casing spacing arch respectively with two minor faces of magnetic core lie in same one side, lie in with one side first terminal with third terminal is spacing setting respectively in one of them spacing bellied both sides lie in with one side the second terminal with fourth terminal is spacing setting respectively in another spacing bellied both sides.

Coil terminal easy winding common mode inductance in, the shape of holding tank with the shape of magnetic core corresponds, just the size of holding tank is greater than the size of magnetic core, four angles of magnetic core with the spacing butt of four angles of holding tank.

Coil terminal easy winding common mode inductance in, be scribbled the insulating layer on the magnetic core.

The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses an easy winding common mode inductance of coil terminal, first coil and second coil all twine on the magnetic core to fix in the holding tank of casing. When the first terminal and the second terminal of first coil to and the third terminal and the fourth terminal of second coil, twine respectively on four fixed parts of four PIN feet that correspond, prevent four fixed parts of its roll-off respectively through four blocking parts of four PIN feet, be convenient for first terminal, second terminal, third terminal and fourth terminal twine on the fixed part, and weld on the fixed part, thereby be convenient for batch production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a schematic side view of the common mode inductor with easily wound coil terminals according to the present invention.

Fig. 2 is a schematic front structural diagram of the common mode inductor with easily wound coil terminals according to the present invention.

Wherein the content of the first and second substances,

11. a shell body, a 111, an accommodating groove, a 112, a limit bulge,

12. a magnetic core is arranged on the outer side of the magnetic core,

13. the number of the coils is such that,

131. a first coil, 1311, a first terminal, 1312, a second terminal,

132. a second coil, 1321, a third terminal, 1322, a fourth terminal,

14. a PIN foot is arranged on the base plate,

141. a fixing portion 1411, a positioning groove,

142. a blocking portion.

In the drawings, elements having similar structures are denoted by the same reference numerals.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the directional terms mentioned in the following description, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding of the present invention, but not for limiting the present invention.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the common mode inductor in the prior art, the winding process of the coil terminal on the PIN PIN is inconvenient to operate, the coil terminal is not easy to weld on the PIN PIN, and the common mode inductor is not suitable for batch production.

The present invention provides a preferred embodiment of a common mode inductor with easily wound coil terminals, which can solve the above technical problems.

Referring to fig. 1 and 2, the present invention provides a common mode inductor with easily wound coil terminals, which includes a housing 11, a magnetic core 12, a coil 13 and four PIN PINs 14. The housing 11 has a receiving groove 111, the core 12 is disposed in the receiving groove 111, and the core 12 may be a ferrite core. The coil 13 includes a first coil 131 and a second coil 132, and the first coil 131 and the second coil 132 are both wound on the magnetic core 12, and have the same size, the same number of turns, and opposite winding directions. The first coil 131 has a first terminal 1311 and a second terminal 1312 at its two ends, respectively, and the second coil 132 has a third terminal 1321 and a fourth terminal 1322 at its two ends, respectively. The PIN 14 includes a fixing portion 141 and a stopper 142, the fixing portion 141 is fixed to the housing 11, and the first terminal 1311, the second terminal 1312, the third terminal 1321, and the fourth terminal 1322 are fixed to the four fixing portions 141, respectively. An included angle is formed between the blocking portion 142 and the fixing portion 141, and when the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are respectively wound around the four fixing portions 141, the four blocking portions 142 are respectively used for preventing the four fixing portions 141 from sliding out.

The utility model discloses an easy winding common mode inductance of coil terminal, first coil 131 and second coil 132 all twine on magnetic core 12 to fix in the holding tank 111 of casing 11. When the first terminal 1311 and the second terminal 1312 of the first coil 131 and the third terminal 1321 and the fourth terminal 1322 of the second coil 132 are respectively wound on the four fixing portions 141 of the corresponding four PIN legs 14, the four blocking portions 142 of the four PIN legs 14 respectively prevent the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 from sliding out of the four fixing portions 141, so that the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are conveniently wound on the fixing portions 141 and welded on the fixing portions 141, thereby facilitating mass production.

Referring to fig. 1 and fig. 2, an included angle between the blocking portion 142 and the fixing portion 141 is set to 85-95 degrees. With the above structure, the four blocking parts 142 have better blocking effects on the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal, and the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are more conveniently wound on the fixing part 141.

Referring to fig. 1 and fig. 2, the four blocking portions 142 extend in the centrifugal direction of the housing 11. The above structure makes the four stoppers 142 not to form a block to the magnetic core 12 when the magnetic core 12 is mounted in the receiving groove 111, and the mounting thereof is more convenient.

Referring to fig. 1, referring to fig. 2, the four fixing portions 141 are respectively provided with positioning grooves 1411, the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are respectively positioned and wound in the four positioning grooves 1411, and then the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are welded to the fixing portions 141. With the structure, the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are not easy to slide when being wound on the fixing portion 141, and the structure is more convenient, time-saving and labor-saving.

Referring to fig. 1, the widths of the four positioning grooves 1411 are the same as the widths of the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322. With the above structure, the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 are more stably fixed in the positioning groove 1411.

Referring to fig. 1 and fig. 2, the housing 11 is rectangular, and the four fixing portions 141 are disposed at four corners of the housing 11 in a longitudinal direction and located at the same side as the top of the accommodating groove 111. The above structure allows the PIN 14 to be located closest to the core 12, thereby facilitating the fixing of the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322.

Referring to fig. 2, the magnetic core 12 is configured as a rectangular ring structure, and the cross section of the magnetic core 12 is a rectangular structure, and the first coil 131 and the second coil 132 are respectively wound on two long sides of the magnetic core 12. In the structure, the magnetic core 12 is enclosed into a rectangle, the four corners of the rectangle are convenient for the coil 13 to be wound in a limiting way, and the number of winding turns of the coil 13 is more due to the long edges.

Referring to fig. 1, referring to fig. 2, two limiting protrusions 112 are disposed on the edge of the housing 11, the two limiting protrusions 112 are respectively located on the same side with the two short sides of the magnetic core 12, the first terminal 1311 and the third terminal 1321 located on the same side are respectively limited and disposed on two sides of one of the limiting protrusions 112, and the second terminal 1312 and the fourth terminal 1322 located on the same side are respectively limited and disposed on two sides of the other limiting protrusion 112. The above-described structure facilitates the fixing of the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 to the fixing portions 141 corresponding thereto.

Referring to fig. 2, the shape of the receiving groove 111 corresponds to the shape of the magnetic core 12, the size of the receiving groove 111 is larger than the size of the magnetic core 12, and four corners of the magnetic core 12 are in limit contact with four corners of the receiving groove 111. Above-mentioned structure for it is more convenient when magnetic core 12 assembles holding tank 111, and magnetic core 12 is fixed stable.

The insulating layer is coated on the magnetic core 12, and the structure enables the winding process of the coil 13 to be controlled better and the inductance to be higher.

The utility model discloses an assembly process of easy winding common mode inductance of coil terminal:

firstly, winding the first coil 131 and the second coil 132 on the magnetic core 12, wherein the first coil 131 and the second coil 132 have the same size, the same number of turns and opposite winding directions;

then, the magnetic core 12 wound with the coil 13 is fixed in the accommodating groove 111 of the housing 11;

then, respectively winding the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322 on the fixing portions 141 of the PIN legs 14 corresponding to the first terminal 1311, the second terminal 1312, the third terminal 1321 and the fourth terminal 1322, and positioning and winding the fixing portions 141 through the positioning grooves 1411;

finally, the first terminal 1311, the second terminal 1312, the third terminal 1321, and the fourth terminal 1322 are welded to the fixing portion 141.

This completes the assembly process of the common mode inductor with the coil terminal easy to wind of the preferred embodiment.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention is to be determined by the appended claims.

Claims

1. A common mode inductor that coil terminal was easily twined, its characterized in that includes:

a housing having an accommodating groove;

a magnetic core disposed in the accommodation groove;

four PIN feet, the PIN foot includes fixed part and block portion, the fixed part is fixed on the casing, the first terminal the second terminal the third terminal with the fourth terminal is fixed respectively four on the fixed part, block portion with be provided with the contained angle between the fixed part, work as the first terminal the second terminal the third terminal with the fourth terminal is twined respectively four during on the fixed part, four the block portion is used for preventing its roll-off four respectively the fixed part.

2. A common mode inductor with easily wound coil terminals as claimed in claim 1, wherein the angle between the blocking portion and the fixing portion is set to 85-95 degrees.

3. A common mode inductor with coil terminals easy to wind according to claim 1, wherein each of the four blocking portions extends toward the centrifugal direction of the housing.

4. A common-mode inductor with easily wound coil terminals as claimed in claim 1, wherein each of the four fixing portions has a positioning groove, the first terminal, the second terminal, the third terminal and the fourth terminal are respectively positioned and wound in the four positioning grooves, and then the first terminal, the second terminal, the third terminal and the fourth terminal are welded to the fixing portions.

5. A common mode inductor with coil terminals easy to wind as claimed in claim 4, wherein the widths of the four positioning grooves are the same as the widths of the first, second, third and fourth terminals.

6. A common-mode inductor with easily wound coil terminals as claimed in claim 1, wherein the housing is rectangular, and four fixing portions are longitudinally disposed at four corners of the housing and located at the same side as the top of the accommodating groove.

7. The common mode inductor of claim 6, wherein the magnetic core is configured as a rectangular ring structure, and the cross-section of the magnetic core is a rectangular structure, and the first coil and the second coil are wound around two long sides of the magnetic core respectively.

8. A common-mode inductor with easily wound coil terminals as claimed in claim 7, wherein two position-limiting protrusions are disposed on the edge of the casing, the two position-limiting protrusions are respectively located on the same side with the two short sides of the magnetic core, the first terminal and the third terminal located on the same side are respectively position-limited and disposed on two sides of one of the position-limiting protrusions, and the second terminal and the fourth terminal located on the same side are respectively position-limited and disposed on two sides of the other position-limiting protrusion.

9. A common mode inductor with easily wound coil terminals as claimed in claim 7, wherein the shape of the accommodating groove corresponds to the shape of the magnetic core, the size of the accommodating groove is larger than that of the magnetic core, and four corners of the magnetic core are in limit abutment with four corners of the accommodating groove.

10. A common mode inductor with easily wound coil terminals as claimed in claim 1, wherein the magnetic core is coated with an insulating layer.