CN202695076U

CN202695076U - Electronic component

Info

Publication number: CN202695076U
Application number: CN 201220227780
Authority: CN
Inventors: 黄伦祖; 徐才冈; 鲁智; 阚言俊
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2012-05-21
Filing date: 2012-05-21
Publication date: 2013-01-23
Anticipated expiration: 2022-05-21

Abstract

The utility model discloses an electronic component (100) which comprises a magnetic core (2), an electrode plate and a winding (3), wherein the electrode plate is arranged on the surface of the magnetic core, the winding (3) is wound around the magnetic core, the electrode plate is provided with an electrode plate groove (225), and at least part of a thread head (31) of the winding is accommodated in the electrode plate groove. According to the utility model, through forming the groove on the electrode plate, the welding positioning of the thread head of the winding is facilitated, and the welding contact area between the thread head and the surface of the electrode plate is increased, thereby facilitating the improvement of the welding adhesiveness of the thread head.

Description

Electronic component

[technical field]

The utility model relates to a kind of chip electronic element with magnetic core.

[background technology]

The applicant has applied for a utility model patent on August 22nd, 2011 to China national Department of Intellectual Property, the application number of this patent application is CN201120304774.5, and the specification of this patent application has disclosed the utility model overwhelming majority's technical characterictic substantially.In addition, prior art also can be with reference to the CN202171992U Chinese utility model patent of bulletin on March 21st, 2012.Yet the electrode slice in above-mentioned two patent applications/patents is tabular.

Because electrode slice is to be immersed in the electroplate liquid by the flange portion with I-shaped iron core to form, if flange portion is tabular, then take out the actual low external convex arc shape in middle high both sides that is of rear electrode sheet.After this end of a thread with enamelled wire is welded on the surface of electrode slice, because electrode slice is external convex arc shape, the end of a thread of enamelled wire is difficult for the location and easily skids.Adopt aforementioned solder technology scheme, it is also relatively poor that enamelled wire is welded in the welding adherence of electrode slice.

Therefore, in fact be necessary to design and a kind ofly be easy to weld the end of a thread to the improvement structure of electrode slice.

[utility model content]

Technical problem to be solved in the utility model is: provide a kind of the end of a thread of enamelled wire that can make to be positioned iron core, and the good electronic component of enamelled wire welding adherence.

In order to address the above problem, it is a kind of for the SMD electronic component that is soldered to the external circuit board that the utility model provides, comprise magnetic core, be arranged at the lip-deep electrode slice of magnetic core, and be wound in winding on the magnetic core, the end of a thread of described winding is fixedly connected on electrode slice, described electrode slice is provided with the electrode slice groove, and the end of a thread of described winding is at least part of to be contained in the electrode slice groove, and the end of a thread of described winding and electrode slice form jointly in order to be soldered to the solder side of the external circuit board.

With respect to prior art, on the utility model electrode slice groove is set, winding the end of a thread can be positioned to be convenient to the welding of the end of a thread and electrode slice in the groove, and has increased the welding contact area on the end of a thread and electrode slice surface, is beneficial to the welding adherence that improves the end of a thread.

[description of drawings]

Fig. 1 is the stereogram of the utility model electronic component, and wherein the end of a thread does not also weld with electrode slice.

Fig. 2 is electronic component upward view shown in Figure 1, and wherein electrode slice is omitted.

Fig. 3 is the disassembly diagram of electronic component shown in Figure 2.

Fig. 4 is the assembling sequence figure of electronic component shown in Figure 1.

[main element symbol description]

Electronic component	100	Tabular iron core	1
				I-shaped iron core	2	Cylindrical portion	21
Flange portion	22	Boss	221
				Interval trough	222	The magnetic core groove	224
The electrode slice groove	225	Winding	3
				The end of a thread	31	The winding section	32

Following embodiment further specifies the utility model in connection with above-mentioned accompanying drawing.

[embodiment]

As shown in Figure 1 to Figure 3 for being used for the SMD electronic component 100 that is soldered to the external circuit board.

Electronic component 100 comprises magnetic core and winding 3.Magnetic core comprises I-shaped iron core 2 and tabular iron core 1.I-shaped iron core 2 comprises cylindrical portion 21 and is positioned at the flange portion 22 at cylindrical portion 21 two ends.Winding 3 twines cylindrical portion 21 and is connected to around to other end flange portion 22 from an end flanges section 22 of I-shaped iron core 2, and described tabular iron core 1 is covered on two flange portion 22.Flange portion 22 is tabular near an end of tabular iron core 1, and flange portion 22 has four boss 221 and the interval trough 222 between adjacent two boss 221 away from an end of tabular iron core 1.Each boss 221 has the magnetic core groove 224 that extends along cylindrical portion 21, these magnetic core groove 224 outer surfaces are electroplated and are formed electrode slice, this electrode slice depends on along magnetic core groove 224 and forms electrode slice groove 225(Fig. 4), these electrode slice groove 225 radius of curvature are greater than the radius of winding the end of a thread 31.Winding 3 comprises four enamelled wires, and every enamelled wire has the winding section 32 that is positioned at its free-ended two the end of a thread 31 and is positioned at two the end of a thread centres, and wherein the end of a thread 31 is fixedly connected on electrode slice.Eight the end of a thread 31 of winding 3 are separately at least part of electrode slice groove 225 that is welded in eight boss 221.

Be illustrated in figure 4 as the number of assembling steps figure of electronic component 100.

1) provide an I-shaped iron core 2, wherein the flange portion 22 of I-shaped iron core 2 has magnetic core groove 224.

The I-shaped iron core 2 that 2) will have a magnetic core groove 224 is immersed in and forms electrode slice groove 225 in the electroplate liquid.

3) provide two enamelled wires along being wound to clockwise I-shaped iron core 2, the end of a thread 31 at least part of accommodating in the electrode slice groove 225 of every enamelled wire, winding section 32 is wound in cylindrical portion 21, by Wuxi spot welding the end of a thread 31 of enamelled wire and 225 welding of electrode slice groove are formed for being soldered to the solder side (not shown) of the external circuit board again, the bearing of trend of described the end of a thread 31 is consistent with the bearing of trend of electrode slice groove 225.

4) provide other two enamelled wires along being wound to counterclockwise I-shaped iron core 2, the end of a thread 31 at least part of accommodating in the electrode slice groove 225 of every enamelled wire, winding section 32 is wound in cylindrical portion 21, by Wuxi spot welding the end of a thread 31 of enamelled wire and 225 welding of electrode slice groove are formed for being soldered to the solder side (not shown) of the external circuit board again, the bearing of trend of described the end of a thread 31 is consistent with the bearing of trend of electrode slice groove 225.

5) tabular iron core 1 is fixed in the flat board end of I-shaped iron core 2 by a glue.

Really, embodiment of the present utility model is the chip electronic element of four enamelled wires, and it can be used for the transformer function.Yet creation point of the present utility model is that the magnetic core of SMD inductor element is provided with electrode slice groove 225, is convenient to the end of a thread 31 positioning weldings of winding, and increases the welding contact area on the end of a thread 31 and electrode slice surface, improves the welding adherence of the end of a thread 31.According to different demands; use thought of the present utility model the enamelled wire of different numbers and the electrode slice of different numbers can be set; therefore chip electronic element also can be used for the application such as inductance and common mode inhibition device, and these distortion are protection range of the present utility model.

Claims

1. one kind is used for the SMD electronic component that is soldered to the external circuit board, comprise magnetic core (2), be arranged at the lip-deep electrode slice of magnetic core, and be wound in winding (3) on the magnetic core, the end of a thread of described winding (31) is fixedly connected on electrode slice, it is characterized in that: described electrode slice is provided with electrode slice groove (225), the end of a thread of described winding is at least part of to be contained in the electrode slice groove, and the end of a thread of described winding and electrode slice form jointly in order to be soldered to the solder side of the external circuit board.

2. electronic component as claimed in claim 1, it is characterized in that: described magnetic core has magnetic core groove (224), and described electrode slice depends on and forms the electrode slice groove on the magnetic core groove.

3. electronic component as claimed in claim 1, it is characterized in that: the bearing of trend of described electrode slice groove (225) is consistent with the bearing of trend of the end of a thread (31), and described electrode slice groove (225) radius of curvature is greater than the radius of winding the end of a thread.

4. electronic component as claimed in claim 1 or 2, it is characterized in that: described magnetic core is I-shaped iron core, around to other end flange portion (22), described electrode slice is positioned on the flange portion described winding from an end flanges section (22) of I-shaped iron core.

5. electronic component as claimed in claim 4, it is characterized in that: described electronic component also comprises the tabular iron core (1) that is covered on the I shape iron core.

6. electronic component as claimed in claim 4, it is characterized in that: described each flange portion (22) has some boss (221), and described electrode slice depends on the outer surface of boss, is provided with interval trough (222) between adjacent two boss.

7. electronic component as claimed in claim 6, it is characterized in that: described winding comprises some enamelled wires, the end of a thread of described enamelled wire (31) is respectively welded in the electrode slice groove (225).

8. electronic component as claimed in claim 1, it is characterized in that: described electronic component is a transformer, and described winding comprises four enamelled wires, and wherein two are wound in magnetic core along clockwise direction, and other two are wound in magnetic core in the counterclockwise direction.

9. electronic component as claimed in claim 1, it is characterized in that: described magnetic core forms described electrode slice groove by being immersed into electroplate liquid.

10. electronic component as claimed in claim 1, it is characterized in that: the end of a thread of described winding (31) Wuxi is welded to electrode slice groove (225) in order to form solder side.