CN201112035Y

CN201112035Y - Electrical inductance structure

Info

Publication number: CN201112035Y
Application number: CNU2007201560966U
Authority: CN
Inventors: 李正雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-14
Filing date: 2007-08-14
Publication date: 2008-09-10
Anticipated expiration: 2017-08-14

Abstract

The utility model relates to an electric inductance structure which comprises at least one coil and a magnetic filler which can fully fill up the coil, and each coil comprises at least one electric magnetic inductance segment formed by a plurality of loops and two terminal feet by extending out the two ends of the electric magnetic inductance segments; the magnetic filler fills up the space between the electric magnetic inductance segment of the coil and the adjacent space of each loops, wherein, the two terminal feet are exposed outside the magnetic filler. In virtue of the electric inductance structure, the occurrence of magnetic leakage is reduced, and the heat dispersing efficiency can be speeded up by increasing the heat dispersing area of a heat source; moreover, as the coil is wrapped by the magnetic filler, the electric magnetic interference can be effectively reduced. In addition, the electric magnetic structure is provided with a magnetic core layer which is arranged at the surface of the magnetic filler and the inductance value of the magnetic core layer is different from the magnetic filler so as to widen the filter frequency range of the electric inductance structure.

Description

Induction structure

Technical field

The utility model relates to a kind of induction structure, particularly relates to a kind of induction structure that is coated on the magnetisable material interior loop that has.

Background technology

Inductor (Inductor) is one of passive device very important in the present electronic industry, it has the noise of filtration, suppresses immediate current, reduces electromagnetic interference (EMI, ElectroMagneticInterference) and function such as power transfer, also because multi-functional characteristic is widely used in the various electronic products inductor.No matter conventional coil type inductance or SMD (Surface Mount Device) inductance, all possess the coil and the core structure that supplies this coil to be fastened that have a power supply stream to pass through, this type of inductor is because of there being the standoff effects electromagnetic conversion between iron core and the coil, therefore the phenomenon of big leakage field takes place, cause in the inductance energising running and produce a large amount of heat energy, and be to prevent to cause electromagnetic interference (EMI) to the nearby electron element because of the coil leakage field that exposes, general outer cover one deck in order to the shell of isolated electromagnetism metal in the coil outside, but the setting of this shell certainly will cause the heat energy accumulation of inductor.

Multiple built-in inductor, as United States Patent (USP) No. 6725525, No. 6614338, No. 6373368, No. 6189204, and the inductor shown in TaiWan, China patent I277107 number, No. 436824, be to use distinct methods to be embedded at the magnetic thing coil, though can effectively completely cut off the influence of electromagnetic interference, but still has the gap between this type of inductor interior loop and the molding magnetic material, when the energising running, be easy to generate vibrations even noise, also can cause flux loss, make the whole magnetic flux of inductor produce the inhomogeneous magnetic stability degree that influences.

On the other hand, in the electronic product load in response to the different frequency signal, may be respectively equipped with inductor, and those inductors further are electrically connected, to increase filter range on the circuit board at different operating signal frequency.Yet, because the trend that electronic product is microminiaturized day by day, though the installing of most inductors can increase the filtering working range, but the possibility that inevitable restricting circuits plate bulk is dwindled, can cause the mutual interference of signal phase again between the adjacent inductors, may cause problems such as signal instability, and on industry is made, set up inductor production cost is risen.

This shows that above-mentioned existing inductor obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that inductor exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of induction structure of new structure, just becoming the current industry utmost point needs improved target.

Because the defective that above-mentioned existing inductor exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of induction structure of new structure, can improve general existing inductor, make it have more practicality.Through constantly research, design, and, create the utility model that has practical value finally through after studying sample and improvement repeatedly.

Summary of the invention

Main purpose of the present utility model is, overcome the defective that existing inductor exists, and provide a kind of induction structure of new structure, technical problem to be solved is to make it solve in the past traditional inductor easily to give off problem such as overheated in bigger electromagnetic interference and the running, significantly reduce magnetic loss and take place, thereby be suitable for practicality more.

Another purpose of the present utility model is, a kind of induction structure of new structure is provided, and technical problem to be solved is to make its operating frequency range that increases inductor, with the setting of minimizing inductor, thereby is suitable for practicality more.

The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to a kind of induction structure that the utility model proposes, this induction structure comprises an at least one coil and a magnetic filler, each coil comprises one at least by the formed electromagnetic induction section of a plurality of circle circles, and extend as being electrically connected the two-terminal pin of use by this electromagnetic induction Duan Erduan, this magnetic filler one enriches the electromagnetic induction section of this coil and respectively this circle circle is in abutting connection with the gap, and this two-terminal pin is exposed to this magnetic filler outside.

The purpose of this utility model and solve its technical problem and can also be able to be further achieved by the following technical measures.

Aforesaid induction structure, the external diameter of wherein said magnetic filler is greater than the circle circle external diameter of coil.

Aforesaid induction structure, wherein said coil are a loop coil.

Aforesaid induction structure, wherein said magnetic filler coat loop coil to form a solid tubular construction.

Aforesaid induction structure, wherein said magnetic filler coat loop coil to form a closed ring structure.

Aforesaid induction structure, the surface of wherein said magnetic filler has at least one radiator structure.

Aforesaid induction structure, wherein said coil are a cylindrical solenoid.

Aforesaid induction structure, wherein said induction structure have more be located at magnetic filler surface and with the core layer of the different magnetic capacity of this magnetic filler, this core layer has an accommodation space that is installed with this magnetic filler.

Aforesaid induction structure, the surface of wherein said core layer has at least one radiator structure.

Aforesaid induction structure, wherein said core layer have more at least one opening that supplies terminal supportor to pass.

Aforesaid induction structure, wherein said core layer are coated on the magnetic filler outside fully.

Aforesaid induction structure, wherein said magnetic filler partly exposes core layer.

The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present utility model thes contents are as follows:

In order to achieve the above object, the utility model provides a kind of induction structure, solve the problems of the technologies described above the technical scheme that is adopted, include an at least one coil and a magnetic filler, each coil includes one at least by the formed electromagnetic induction section of a plurality of circle circles, and by this extended two-terminal pin in electromagnetic induction section two ends, and this magnetic filler, one enrich the electromagnetic induction section of this coil and respectively this circle circle in abutting connection with the gap, and make this two-terminal pin be exposed to this magnetic filler outside with as being electrically connected use, and the external diameter of this magnetic filler is greater than the circle circle external diameter of this coil.

In addition, in order to achieve the above object, a kind of induction structure of the utility model, more have in this magnetic filler surface one with the core layer of the different magnetic capacity of this magnetic filler, this core layer is provided with an accommodation space that is installed with this magnetic filler.By the technical scheme of above-mentioned two kinds of different magnetic capacity magnetic element assemblings, effectively prolong the scope of work signal frequency, reduce the setting of a plurality of inductors, also can avoid because of causing the interference problem of signal frequency between a plurality of inductors mutually.

Via as can be known above-mentioned, a kind of induction structure of the utility model, it comprises that at least one coil and enriches the magnetic filler of this coil fully, each coil comprises one at least by the formed electromagnetic induction section of a plurality of circle circles, and the two-terminal pin that extends by this electromagnetic induction section two ends, this magnetic filler one enriches the electromagnetic induction section of this coil and respectively this circle circle is in abutting connection with the gap, and wherein, this two-terminal pin is exposed to this magnetic filler outside.By this induction structure, reduce the generation of leakage field, also can quicken radiating efficiency because of the area of dissipation that increases thermal source, more, can effectively reduce the influence of electromagnetic interference because this coil is coated in this magnetic filler.In addition, this induction structure has more the surface of being located at this magnetic filler, and with the different core layer of this magnetic filler inductance value, to widen the scope of this induction structure frequency filtering.

By technique scheme, the utility model induction structure has following advantage at least: the utility model induction structure is that coil is embedded in the magnetic filler, only extend two as be connected the terminal supportor that uses with external electrical, and there is no the gap between this coil and this magnetic filler, therefore, when electric current by the time, effectively increase inductance value and reduce the generation of leakage field, also can reduce the heat energy that causes because of magnetic loss and have problems.In addition, the utility model more will include peripheral hardware one core layer on the magnetic filler surface of coil, this core layer is different magnetic capacity with this magnetic filler, can be respectively in response to different operating signal frequency, make the operating frequency range of overall inductance structure enlarge, to replace the inductor of a plurality of little working ranges, so can reduce the amount of setting of inductor on the circuit board, avoid the electromagnetic interference that causes between the adjacent inductors.

The utlity model has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on structure or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing inductor has the multinomial effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is the stereoscopic schematic diagram of the utility model induction structure one preferred embodiment.

Fig. 2 is the structural profile schematic diagram of the utility model induction structure one preferred embodiment.

Fig. 3 be the utility model induction structure have a double-deck electromagnetic induction section embodiment look schematic diagram in appearance.

Fig. 4 is the structural profile schematic diagram that has the preferred embodiment of protuberance radiator structure in the utility model.

Fig. 5 is the structural profile schematic diagram that has the preferred embodiment of depressed part radiator structure in the utility model.

Fig. 6 is the structural profile schematic diagram of closed ring induction structure in the utility model preferred embodiment.

Fig. 7 is the structural profile schematic diagram of cylindricality induction structure in the utility model preferred embodiment.

Fig. 8 is the STRUCTURE DECOMPOSITION schematic diagram of another embodiment of the utility model induction structure.

Fig. 9 is the combination schematic perspective view of another embodiment of the utility model induction structure.

Figure 10 is the structural profile schematic diagram that the magnetic filler partly exposes core layer among another embodiment of the utility model induction structure.

Figure 11 is the structural profile schematic diagram of the complete coated magnetic filler of core layer among another embodiment of the utility model induction structure.

Figure 12 is the structural profile schematic diagram that has another embodiment of protuberance radiator structure in the utility model.

Figure 13 is the structural profile schematic diagram that has another embodiment of depressed part radiator structure in the utility model.

Figure 14 is the structural profile schematic diagram of closed ring induction structure among another embodiment of the utility model.

Figure 15 is the structural profile schematic diagram of cylindricality induction structure among another embodiment of the utility model.

Embodiment

For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of induction structure, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

See also Figure 1 and Figure 2, the stereoscopic of the utility model one preferred embodiment and structural profile schematic diagram, as shown in the figure: the utility model is a kind of induction structure, include at least one coil 10, and one be coated on the outer magnetic filler 20 of this coil 10, this coil 10 comprises one at least by the formed electromagnetic induction section 11 of a plurality of circle circles, and by the extended two-terminal pin 12 of these electromagnetic induction section 11 2 ends, 12a, these magnetic filler 20 one enrich the electromagnetic induction section 11 of this coil 10 and respectively this circle circle in abutting connection with the gap, 20 tights of this coil 10 and this magnetic filler are existed, and the external diameter of this magnetic filler 20 makes this coil 10 can be embedded in fully among this magnetic filler 20 greater than the circle circle external diameter of this coil 10.In addition, for making this induction structure be able to be electrically connected with the exterior electrical components (not shown), the two-terminal pin 12 of this

coil

10,12a are exposed to this magnetic filler 20 outsides, and this two-

terminal pin

12,12a can be fixed on the circuit board (not shown) by modes such as hot blast soft solderings.

When electric current passes through this coil 10, this coil 10 produces a magnetic field, the intensity in this magnetic field is along with the size of current of this coil 10 of flowing through and this circle number of turns order and change, in the utility model, because this coil 10 is embedded in this magnetic filler 20, and this magnetic filler 20 enriches the internal clearance of this coil 10 fully, make this coil 10 fit tightly with this magnetic filler 20, may cause the generation of coil 10 vibrations or noise after avoiding switching on, also can increase the inductance value of inductor, reduce the generation of leakage field, more the electromagnetic induction section 11 owing to this coil 10 is coated among this magnetic filler 20, effectively avoid giving off the influence of electromagnetic interference (EMI), make the utility model induction structure in the energising running, obtain preferable job stability.In addition, generally speaking Sun Shi energy sheds with the form of heat mostly, the magnetic filler 20 that is coated on these coil 10 outsides has bigger area of dissipation compared to the core structure of traditional inductor, the heat energy that the induction structure that effectively scatters and disappears produces in the work running.

The coil 10 of the utility model induction structure comprises an electromagnetic induction section 11 at least, as shown in Figure 3, this coil 10 includes the first electromagnetic induction section 11a and is built in the second electromagnetic induction section 11b among this first electromagnetic induction section 11a, this first electromagnetic induction section 11a and this second electromagnetic induction section 11b are one another in series, setting by double-deck

electromagnetic induction section

11a, 11b, make this induction structure overall inductance amount rise, also can make full use of the remaining space of magnetic filler 20.

And in order to promote the radiating efficiency of overall inductance structure, as Fig. 4 and shown in Figure 5, these magnetic filler 20 surfaces have more at least one radiator structure in the utility model, this radiator structure can be a plurality of protuberances 21 as bullet, cuboid or cylindrical body etc., or be the hole of a plurality of depressed parts 22 as microscler groove or indivedual depressions, and the shape of above-mentioned this radiator structure is not to limit as scope of the present utility model only as possible embodiment.

This magnetic filler 20 can utilize modes such as die cast, ejection formation to coat this coil 10, and its Overmolded mode there is no in the utility model and limited.This coil 10 can be wound in difformity, as annular, cylindricality or the shape of a hoof etc., the difform coil 10 of these magnetic filler 20 collocation is overmolding to solid tubular construction (as shown in Figure 1), closed ring structure (as shown in Figure 6) or column construction (as shown in Figure 7) etc.

See also Fig. 8 and shown in Figure 9, the STRUCTURE DECOMPOSITION of another embodiment of the utility model and combination schematic perspective view, as shown in the figure: the utility model induction structure comprises that more the core layer 30 of being located at these magnetic filler 20 surfaces applies to loop coil 10 formed induction structures in present embodiment, this core layer 30 has an accommodation space 31 that is installed with magnetic filler 20, this magnetic filler 20 is embedded in this core layer 30, and this core layer 30 has a two-terminal pin 12 for this coil 10 at least, the opening 32 that 12a passes, this magnetic filler 20 can partly expose this core layer 30 (as Fig. 9 and shown in Figure 10), and perhaps this core layer 30 can be coated on this magnetic filler 20 outsides (as shown in figure 11) fully.It should be noted that, this core layer 30 is the material of different magnetic capacity with this magnetic filler 20, when electric current was flowed through this coil 10, this core layer 30 had its work signal frequency range respectively with this magnetic filler 20, to carry out the filter function of different frequency scope.Generally speaking, the inductor of single iron core has the fixing frequency that can work, if the signal frequency of input exceeds outside this operating frequency range, this inductor then can't be to this input signal generation effect.In the utility model, the magnetic line of force that this coil 10 is produced, can pass through the magnetisable material of two kinds of different magnetic capacity simultaneously, this induction structure can corresponding input signal operating frequency range increase, that is to say, magnetic filler 20 and core layer 30 can be selected the magnetisable material that is applicable to different signal frequencies respectively for use, enlarge the scope of induction structure operating frequency.Thus, the utility model induction structure is set on circuit board can be substituted by in response to the set a plurality of inductors of different operating frequency and can reach identical effect, also avoid because of the problem that too much inductor causes the electromagnetic interference that causes between the inductor is set, effectively reduce the needed volume of circuit board, also can reduce because of the production cost that most inductor causes is set.In addition, at least one radiator structure also can be set up in the surface of this core layer 30, and this radiator structure can be a plurality of protuberances 33 or is a plurality of depressed parts 34, as Figure 12 or shown in Figure 13.

Another embodiment of the utility model also can be applicable to other different structures induction structure, as Figure 14 or shown in Figure 15, be respectively the induction structure of a closed ring or the induction structure of a cylindricality, this magnetic filler 20 also is embedded at one and meets in the core layer 30 of these magnetic filler 20 surface textures, make the magnetic line of force that this coil 10 produced can be simultaneously through the magnetic filler 20 and the core layer 30 of two different magnetic capacity, to enlarge the working range of cylindricality inductance, reach and reduce the purpose that inductor is provided with.

In sum, because the utility model induction structure is that coil 10 is embedded in the magnetic filler 20, only extend two as be connected terminal supportor 12, the 12a that uses with external electrical, and there is no the gap between this coil 10 and this magnetic filler 20, therefore, when electric current by the time, effectively increase inductance value and reduce the generation of leakage field, also can reduce the heat energy that causes because of magnetic loss and have problems.In addition, the utility model more will include magnetic filler 20 surfaces of coil 10 and go up peripheral hardware one core layer 30, this core layer 30 is different magnetic capacity with this magnetic filler 20, can be respectively in response to different operating signal frequency, make the operating frequency range of overall inductance structure enlarge, to replace the inductor of a plurality of little working ranges, so can reduce the amount of setting of inductor on the circuit board, avoid the electromagnetic interference that causes between the adjacent inductors.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. induction structure is characterized in that:

This induction structure comprises an at least one coil (10) and a magnetic filler (20), each coil (10) comprises one at least by the formed electromagnetic induction sections of a plurality of circle circles (11), and extend as the two-terminal pin (12,12a) that is electrically connected use by these electromagnetic induction section (11) two ends, this magnetic filler (20) one enriches the electromagnetic induction section (11) of this coil (10) and respectively this circle circle is in abutting connection with the gap, and this two-terminal pin (12,12a) is exposed to this magnetic filler (20) outside.

2. according to the described induction structure of claim 1, it is characterized in that the circle circle external diameter of the external diameter of wherein said magnetic filler (20) greater than coil (10).

3. according to the described induction structure of claim 1, it is characterized in that wherein said coil (10) is a loop coil.

4. according to the described induction structure of claim 3, it is characterized in that wherein said magnetic filler (20) coats loop coil (10) to form a solid tubular construction.

5. according to the described induction structure of claim 3, it is characterized in that wherein said magnetic filler (20) coats loop coil (10) to form a closed ring structure.

6. according to the described induction structure of claim 1, it is characterized in that the surface of wherein said magnetic filler (20) has at least one radiator structure.

7. according to the described induction structure of claim 1, it is characterized in that wherein said coil (10) is a cylindrical solenoid.

8. according to the described induction structure of claim 1, it is characterized in that wherein said induction structure have more be located at magnetic filler (20) surface and with the core layer (30) of the different magnetic capacity of this magnetic filler (20), this core layer (30) has an accommodation space (31) that is installed with this magnetic filler (20).

9. described according to Claim 8 induction structure is characterized in that the surface of wherein said core layer (30) has at least one radiator structure.

10. described according to Claim 8 induction structure is characterized in that wherein said core layer (30) has more at least one opening (32) that passes for terminal supportor (12,12a).

11. described according to Claim 8 induction structure is characterized in that wherein said core layer (30) is coated on magnetic filler (20) outside fully.

12. described according to Claim 8 induction structure is characterized in that wherein said magnetic filler (20) part exposes core layer (30).