CN211208205U

CN211208205U - Inductance coil

Info

Publication number: CN211208205U
Application number: CN201921862043.5U
Authority: CN
Inventors: 鞠万金; 朱勇; 黄文华
Original assignee: SHENZHEN JINGQUANHUA ELECTRONICS CO LTD
Current assignee: SHENZHEN JINGQUANHUA ELECTRONICS CO LTD
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-07
Anticipated expiration: 2029-10-31

Abstract

The utility model provides an inductance coil is applicable to the inductance of transformer, inductance coil include the body and by the body both ends extend the first terminal and the second terminal that form, the body the first terminal reaches second terminal integrated into one piece, and form by flat conductor coiling.

Description

Inductance coil

Technical Field

The utility model relates to a power technical field especially relates to an inductance coil.

Background

This section is intended to provide a background or context to the particular embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

In transformer inductance applications, especially high current coil applications, where the coil's primary function is to carry current through, the basic requirements of the coil typically include two points: the first point is that the coil conductor has small obstruction to the passing current, namely has large current-passing performance; the second point is better insulation performance and safety performance.

However, in the conventional connection method of the copper conductor and the lead terminal of the large-current coil, a general soldering or caulking method is generally used. Due to the process limitation, the manufacturing is difficult, the reliability is not high, the contact resistance is easy to be large, and the phenomenon of overhigh temperature rise is easy to occur in the using process of the coil. In order to solve the problem of excessive temperature rise of the coil, the cross-sectional area of the copper material of the conventional conductor is generally increased to reduce the temperature rise caused by copper loss, however, this increases the material cost, and is not in accordance with the general trend of miniaturization of the device.

In addition, because the welding point between the existing coil conductor and the leading-out terminal is generally exposed outside, the exposed welding point can cause the insufficient insulation distance of the coil and the poor insulation performance.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an integrated into one piece's inductance coil can solve coil contact resistance big, the temperature rise is too high and the naked potential safety hazard scheduling problem of solder joint in the current transformer inductance use, still can simplify coil manufacturing process simultaneously, strengthens the reliability of terminal, is favorable to the integration trend of whole device.

The utility model provides an inductance coil, is applicable to the inductance of transformer, inductance coil includes the body and by first terminal and the second terminal that the body both ends extended formation, the body, first terminal and the second terminal integrated into one piece just is formed by flat conductor coiling.

Preferably, the body is substantially circular and comprises coils stacked in sequence, the body is an insulated conductor, and the coils are insulated from each other.

Preferably, the body includes a first surface and a second surface opposite to each other, the first terminal is substantially perpendicular to the first surface, and the second terminal is coplanar with the second surface.

Preferably, the first terminal comprises a connecting portion and an extending portion connected with the connecting section, the connecting portion is substantially S-shaped, and the extending portion is saw-toothed.

Preferably, the connecting section comprises a first connecting section and a second connecting section, one end of the first connecting section is vertically connected with the body, the other end of the first connecting section is connected with the second connecting section, one end of the second connecting section is connected with the first connecting section, the other end of the second connecting section is connected with the extending portion, and the outer edge of the joint of the first connecting section and the second connecting section is arc-shaped.

Preferably, the extension part comprises a side edge, one side of the side edge is flush with the second connecting section, a plurality of convex teeth are arranged on the other side in a protruding mode and evenly spaced, and the convex teeth face the second terminal.

Preferably, the second connecting section is connected with the side edge, and the outer edge of the connecting part is arc-shaped.

Preferably, the second terminal is substantially rectangular and is formed by extending a section of the body.

Preferably, the flat conductor is made of copper or aluminum.

Preferably, the spacing between the first and second terminals is greater than 5 mm.

The utility model provides an inductance coil the body first terminal reaches the second terminal is integrated into one piece, can solve current transformer inductance, especially heavy current transformer inductance's coil body and the connection problem of terminal, avoids because the switching welds with the transition welding contact resistance who leads to big, the temperature rise is too high to and the naked potential safety hazard of solder joint, simultaneously, still simplified coil manufacturing process, strengthened the reliability of lead terminal, be favorable to the integration trend of whole device, have very big economic value and popularization nature to whole transformer inductance application.

Drawings

In order to more clearly illustrate the technical solution of the embodiments/modes of the present invention, the drawings needed to be used in the description of the embodiments/modes are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments/modes of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an inductance coil according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the inductor shown in FIG. 1

Description of the main elements

Inductance coil	100
		Body	10
First surface	11
		Second surface	13
First terminal	20
		Connecting part	21
First connecting section	211
		Second connecting section	213
Extension part	23
		Side edge	231
Convex tooth	233
		Second terminal	30
Spacer	D

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, fig. 1 shows an inductance coil 100 suitable for a transformer according to a preferred embodiment of the present invention, where the inductance coil 100 includes a body 10, and a first terminal 20 and a second terminal 30 formed by extending two ends of the body 10, and the body 10, the first terminal 20, and the second terminal 30 are integrally formed without being connected by welding or riveting, and are formed by winding a flat conductor. In the preferred embodiment, the flat conductors are made of copper or aluminum.

The body 10 is O-shaped, and comprises coils 10a which are sequentially stacked, the body 10 is an insulated conductor, and the coils 10a are insulated and non-conductive. In the preferred embodiment, the number of the coils 10a is two, and it can be understood that the number of the coils 10a can be increased or decreased according to actual requirements. In the preferred embodiment, the main body 10 is formed by vertically winding a special jig.

The body 10 includes a first surface 11 and a second surface 13 disposed opposite to each other, the first terminal 20 is substantially perpendicular to the first surface 11, and the second terminal 30 is coplanar with the second surface 13.

The first terminal 20 includes a connection portion 21 and an extension portion 23 connected to the connection portion 21, the connection portion 21 is substantially S-shaped, and the extension portion 23 is saw-toothed.

Connecting portion 21 includes first linkage segment 211 and second linkage segment 213, the one end of first linkage segment 211 with body 10 links to each other perpendicularly, the other end with second linkage segment 213 links to each other, the one end of second linkage segment 213 with first linkage segment 211 links to each other, the other end with extension 23 links to each other, first linkage segment 211 with the outer fringe of the junction of second linkage segment 213 is the arc, simultaneously, second linkage segment 213 with extension 23 links to each other, and the outer fringe of junction is the arc, thereby forms S type connecting portion 21. In the preferred embodiment, the S-shaped connecting portion 21 is formed by extending, shaping and punching.

The extension portion 23 includes a side 231, one side of the side 231 is flush with the second connection section 213, and the other side is protruded with a plurality of convex teeth 233 at regular intervals. The side 231 is connected to the second connection segment 213. The convex teeth 233 are disposed toward the second terminal 30. Each of the teeth 233 are parallel to each other. The serration structure formed by the teeth 233 can be interlocked with another connection end having the same structure, so that the connection is more stable.

The second terminal 30 is substantially rectangular and is formed by extending a length of the body 10. Referring to fig. 2, in the preferred embodiment, the distance D between the second terminal 30 and the first connecting section 211 is greater than 5mm, so that there is a safety distance therebetween.

The utility model discloses in the embodiment induction coil the body 10 first terminal 20 reaches second terminal 30 is integrated into one piece, can solve current transformer inductance, especially the coil body of heavy current transformer inductance and the connection problem of lead terminal, it is big with the contact resistance that transition welding leads to avoid the switching to weld, the temperature rise is too high, and the naked potential safety hazard of solder joint, and simultaneously, coil manufacturing process has still been simplified, the reliability of lead terminal (first terminal 20 and second terminal 30) has been strengthened, be favorable to the integration trend of whole device, have very big economic value and popularization nature to whole transformer inductance application.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several of the means recited in the apparatus claims may also be embodied by one and the same means or system in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An inductance coil, is applicable to the inductance of transformer, its characterized in that: the inductance coil comprises a body, a first terminal and a second terminal, wherein the first terminal and the second terminal are formed by extending two ends of the body, and the body, the first terminal and the second terminal are integrally formed and are formed by winding a flat conductor.

2. The inductor of claim 1, wherein: the body is roughly O-shaped and comprises coils which are sequentially stacked, the body is an insulated conductor, and the coils are insulated.

3. The inductor of claim 2, wherein: the body comprises a first surface and a second surface which are oppositely arranged, the first terminal is approximately perpendicular to the first surface, and the second terminal is coplanar with the second surface.

4. The inductor of claim 3, wherein: the first terminal comprises a connecting part and an extending part connected with the connecting part, the connecting part is approximately S-shaped, and the extending part is in a sawtooth shape.

5. The inductor of claim 4, wherein: the connecting portion include first linkage segment and second linkage segment, the one end of first linkage segment with the body links to each other perpendicularly, the other end with the second linkage segment links to each other, the one end of second linkage segment with first linkage segment links to each other, the other end with the extension links to each other, first linkage segment with the outer fringe of the junction of second linkage segment is the arc.

6. The inductor of claim 5, wherein: the extension includes the side, one side of side with the second linkage segment parallel and level, a plurality of evenly spaced dogtooths are established to the opposite side arch, the dogtooth orientation the second terminal sets up.

7. The inductor of claim 6, wherein: the second connecting section is connected with the side edge, and the outer edge of the connecting part is arc-shaped.

8. The inductor of claim 7, wherein: the second terminal is substantially rectangular and is formed by extending a section of the body.

9. The inductor of claim 8, wherein: the flat conductor is made of copper or aluminum.

10. The inductor of claim 1, wherein: the spacing between the first and second terminals is greater than 5 mm.