CN2615833Y - Inductance element - Google Patents

Abstract

An inductor comprises coils and a coating body covering the coils. The coils comprise a winding part where wires wind a certain number of loops along a center axes and two extension parts which is extended out from the sides of the coil. The coating body is formed by the close combination of a upper covering layer, a lower covering layer and a chassis without clearances. The structure of the covering layer is filled closely permeating to the chassis and the coils sections, and covering the coils sections into the covering sections and the chassis. Because the covering sections and the coils are closely connected, the inductor can be mass produced with high quality and convenience.

Description

Inductance element

Technical field

The utility model relates to a kind of inductance element, particularly relates to a kind of inductance element of forming at the outside coating of a coil one cladding.

Background technology

The structure design of general inductance element, can be different with the difference of required characteristic and specification such as frequency, electric current, volume, inductance value etc., the structure of inductance element in the past as shown in Figure 1, 2, be to include by permeability magnetic material such as the made jacket body 10 of ferroalloy, and a coil 13 that is wrapped in this jacket body 10.

This jacket body 10 include can one correspondence covers on next a base 11 and a top board 12.This base 11 have one by the one end face toward the tank 111 of lower recess, an and jack-post 110 that erectly is built up in these tank 111 centre.This tank 111 has two side opening ends 112.These top cover 12 summarys become tabular, have two by the spacing convave trough 121 of one end face opposition side toward lower recess, these top cover 12 correspondences cover the manufacture on this base 11, be to adopt at top cover 12 and base 11 joints with glue coating bonding unshakable in one's determination, and two members are bonding is integral with this.

It is one curved around the pitch of the laps portion 131 that pre-fixing turn forms along a central axis by radius ground such as rectangular flat leads that this coil 13 has, and two extensions 132 that extended toward the place by these pitch of the laps portion 131 two ends respectively.This pitch of the laps portion 131 is before top cover 12 is bonded in base 11 during assembling, elder generation's correspondence is contained in the tank 111 of this base 11, and the axle encapsulation is combined in jack-post 110 outsides of base 11, and this two extension 132 is corresponding respectively one high and one lowly these side opening ends 112 that pass this tank 111, then just can be bonded in this base 11 end faces by aforementioned top cover 12, and with coil 13 fixed limits 11 of top cover 12 and bases.Again, as shown in Figure 2, the outer end of this two extension 132 can optionally up and in opposite directions paste in this two groove 121 of top cover 12 bendingly.

In the manufacture process of above-mentioned inductance element in the past, except the base 11 of this jacket body 10 is processed with the some glue bond that top cover 12 is carried out, can cause its operation comparatively to bother and be unfavorable for beyond a large amount of productions and the increase cost, its coil 13 is sleeved on the structure that is provided with in the tank 111 of base 11, because coil 13 is contained in 12 of base 11 and top covers in the fit mode, can there be the space unavoidably, and both-side opening end 112 a unavoidable magnetic conduction gap especially, therefore except being easy to generate noise and vibration, and can cause bigger magnetic loss, and the quality factor of inductance (QualityFactor is called for short the Q value) can descend.

The utility model content

The purpose of this utility model is to provide and does not have the space between a kind of cladding and coil fully and be convenient to mass-produced inductance element.

Inductance element of the present utility model comprises the cladding that a coil and is coated on the coil outside, and it is one curved around the pitch of the laps portion that pre-fixing turn forms along a central axis by a lead that this coil has, and two extensions that extended outward by these pitch of the laps portion two ends respectively.Be characterized in, this cladding be by one on the other knot coating and a base seamlessly integrally combine constitute, and this knot coating structurally be fill close ooze on this base with this winding section in, enclose in this knot coating and this base and the winding section inclusion of this coil covered.

There is not the space in structure between cladding body and coil fully whereby, and the not only big step is improved the quality of this inductance element and also convenient a large amount of production.

Description of drawings

Below by most preferred embodiment and accompanying drawing inductance element of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the three-dimensional exploded view of inductance element in the past;

Fig. 2 is this assembled sectional view of inductance element in the past;

Fig. 3 is the stereogram of the utility model inductance element first embodiment;

Fig. 4 is the side cutaway view of this first embodiment;

Fig. 5 one is used for making the mould three-dimensional exploded view of this first embodiment;

Fig. 6 is a combined right sectional view of this mfg. moulding die among Fig. 5, illustrates that a coil is positioned in the base and is subjected to mould holding to be positioned at one to be installed in the space;

Fig. 7 one is similar to the view of Fig. 6, illustrates that this coil end face is launched into this knot coating that is installed in the space and coats;

Fig. 8 is the stereogram of the utility model inductance element second embodiment;

Fig. 9 one is used for making the simple three-dimensional exploded view of mfg. moulding die of this second embodiment;

Figure 10 is a combined right sectional view of this mfg. moulding die among Fig. 9, illustrates that a coil is positioned in the base and is subjected to mould holding to be positioned at one to be installed in the space;

Figure 11 one is similar to the view of Figure 10, illustrates that this coil end face is launched into this knot coating that is installed in the space and coats.

Embodiment

As shown in Figures 3 and 4, first embodiment of the utility model inductance element 2 has a coil 21, and a coating layer 22 that is coated on these coil 21 outsides.

It is one curved around the pitch of the laps portion 211 that pre-fixing turn forms along a central axis by radius ground such as rectangular flat leads that this coil 21 has, and two extensions 212 that extended outward by these pitch of the laps portion 211 two ends respectively.

This cladding 22 be by one on the other knot coating 23 and a base 24 seamlessly integrally combine constitute, and winding section 211 fixed packet of this coil 21 are overlying on cladding 22 inside.

As shown in Figure 5, the mfg. moulding die that is used for making the first embodiment inductance element 2 includes a counterdie 3, and one is used for correspondence and is pressed together on the patrix 4 of these counterdie 3 end faces.

This counterdie 3 is horizontal lengthy motion picture shape plate body, following basal wall 31 with a horizontal expansion, and most adjacent ground connection are by an end face of this time basal wall 31 leg 32 under the rectangular shaped as frame of consubstantiality extension up, so as to defining most openings following die cavity 33 up, graphic comparatively cheer and bright for making, only having two following die cavitys 33 with this counterdie 3 in the present embodiment is that example explains, and still designs not as limit.

Each all can supply to place this in advance by permeability magnetic material such as the made base 24 of ferroalloy powder die casting on the die cavity 33 down.This base 24 have one by the one end face toward the tank 241 of lower recess, an and jack-post 242 that erectly is built up in these tank 241 centre, this tank 241 has two side opening ends 243.The pitch of the laps portion 211 of aforementioned coil 21 is contained in the tank 241 of this base 24, and is linked in this jack-post 242 outsides, and this two extension 212 of coil 21 is corresponding respectively these side opening ends 242 that pass this tank 241.

Each descends all can bridge for the extension 212 of aforementioned coil 21 on leg 32 on it, and each down leg 32 have parallel before, rear wall section 321,322 and two be connected in before, rear wall section 321, side wall sections 323 between 322 liang of ends, aforesaid die cavity 33 down is to be defined jointly by this time leg 32 and 31 of following basal walls, before being somebody's turn to do, rear wall section 321,322 all have front and back extends ground by the following location notch 324 of one end face toward lower recess, 325, these two times location notchs 324,325 have the rectangular cross section that cooperates with the extension 212 of aforementioned coil 21, two extensions 212 that make coil 21 level respectively bridge at these two times location notchs 324, on 325, this two side wall sections 323 is contour with front wall segments 321, and the height of this rear wall section 322 is up projection than this front wall segments 321 in the design, make this two times location notchs 324,325 is a low height, and this design is that its two extension 212 is to be one high and one low horizontal-extending state in response to the bridging of coil 21 time.

This patrix 4 be can with the aforementioned counterdie 3 corresponding lengthy motion picture shape plate bodys that cover, have the last basal wall 41 of a horizontal expansion, and most adjacent ground connection are by a bottom surface of this time basal wall 41 leg 42 on the rectangular shaped as frame of consubstantiality extension down.That should go up that basal wall 41 has that majority runs through that Qi Ding, bottom surface be used for injecting aforementioned knot coating 23 injects hole 411.Leg 42 has parallel front and back walls section 421,422 on each, and two side wall sections 423 that are connected between 421,422 liang of ends of front and back walls section, and define a downward opening upper mould cave 43 jointly by leg on this 42 and last basal wall 41, and the shape of last leg 42 is following leg 31 complementary shape for can correspondingly covering with aforementioned counterdie 3, that is to say that these side wall sections 423 of leg 42 are identical with front wall segments 421 projecting degrees on this, only the projecting degree of this rear wall section 422 is less.

Cooperate shown in Figure 6, when all being placed with base 24 with coil 21 on these following legs 32 of aforementioned counterdie 3, can then patrix 4 correspondences be covered at counterdie 3 end faces, borrow leg 42 on these of patrix 4 this moment, close respectively compressing on these following legs 32 that are combined in counterdie 3, and utilize anchor clamps (figure do not show) with two extensions 212 of each coil 21 respectively clamping be positioned on institute's correspondence, following leg 42,32 front wall segments 421,321 and rear wall section 422,322, this moment and by patrix 4, counterdie 3 is on each, following leg 42,32 define one jointly by last, following die cavity 43,33 be communicated with form be installed in space 5, this base 24 is to be contained in this bottom that is installed in space 5 with coil 21.

As shown in Figure 7, each base 24 and coil 21 are ccontaining be positioned 4,3 of upper and lower moulds after, then will contain the made fluidised form coating fluid of ferroalloy powder, mode with metal ejection formation, the hole 411 of injecting by patrix 4 is injected and is full of this and is installed in 5 upper ends, space, becomes the solid-state knot coating 23 that is coated on base 24 and coil 21 tops to condense.Coat fluid herein and can add that the solvent and some cementing agent that help the stream effect are made by the ferroalloy powder fluid, inject hole 411 by these and inject being installed in 5 upper ends, space of 4,3 of upper and lower moulds, and close filling out oozed completely on base 24 and in the pitch of the laps portion 211, make the pitch of the laps portion 211 of each base 24 and coil 21 condensed into afterwards solid-state knot coating 23 fill coating, and then be combined into one.

In addition, selectively toast these bases that integrally combine 24, coil 21 and knot coating 23, make the 23 sclerosis typings of knot coating, so just, can be made into desired inductance element 2, and 23 sub-fractions that account for integral coating body 22 of the knot coating in the made inductance element 2, the volume of this knot coating 23 accounts for 20%～30% of integral coating body 22 in the present embodiment, relatively the volume of this base 24 accounts for 70%～80% of integral coating body 22, and therefore 23 of this knot coating account for cladding 22 fraction volumes.

Again, what deserves to be mentioned is the structure design of above-mentioned inductance element 2, can adopt the material of different qualities by base 24 and knot coating 23, make inductance element 2 not be subjected to the restriction of homogenous material condition, produce cladding 22 with combined type material at different operating characteristic demand.

In addition, needs for whole coil 21 location, can be when coil 21 be inserted counterdie 3, just default two blocks 6 (being found in Fig. 6,7) on the machine table, be barred from these two extensions, 212 ends of coil 21, so that mobile the pushing that subsequent job during injecting knot coating 23, avoids two extensions 212 of coil 21 to be tied coating 23 influences and the front and back displacement.

In addition, two extensions, 212 ends of the inductance element 2 that present embodiment is made, can carry out bending process in addition, and up also identical bending pastes to the end face of cladding 22, its bending state cooperates this demand that makes certainly with aforementioned shown in Figure 2 identical, can down outstanding position be set in the collocation of upper substrate 41 bottom surfaces of patrix 4 in addition, so that constitute corresponding groove, do not show with graphic in addition at this at cladding 22 end faces.

Really do not need to carry out assembling operation in the above-mentioned manufacture process as bonding processing that manufacture carries out in the past, therefore can reduce manufacturing cost and convenient a large amount of production, and made inductance element 2, because its cladding 22 is seamlessly coated the coil portion 211 of coil 21 therebetween by knot coating 23 and base 24, can not there be the space in 22 of pitch of the laps portion 211 and claddings, therefore noise and vibration can be avoided producing, and the Q value of magnetic loss and lifting inductance can be reduced.And in manufacture process, this coil 21 also can be located with being stabilized, the distance of itself and mould inner wall is fully separated and fixes, and guarantees the gauge thickness of magnetic conductor (cladding 22).

As shown in Figure 8, the coil 21 of second embodiment of the utility model inductance element 2 is different with aforementioned first embodiment, this coil 21 is curved around forming by rectangular round wire lead, and this coil 21 has one by curved coil portion 211, two extensions 212 that extended outward by the two ends of this pitch of the laps portion 211 respectively that form around pre-fixing turn of a rectangular round wire lead, and two kinks 213 that down extended in the same way by the end of these extensions 212 respectively.

As Fig. 9 and shown in Figure 10, for difference in response to coil 21 shapes, be used for making in the mfg. moulding die of this second embodiment inductance element, the forward and backward side wall sections 321,322 of the following leg 32 of this counterdie 3, has the side location notch 326,327 that down extends by following location notch 324,325 respectively more respectively, make these two kinks, 213 same side of coil 21 can respectively and be lower than this two sides location notch 326,327, and more can guarantee the vertical stable state of the centerline axis of coil 21.

When all being placed with base 24 with coil 21 on these following legs 32 of aforementioned counterdie 3, can then patrix 4 correspondences be covered at counterdie 3 end faces, state as shown in figure 10, these that borrow patrix 4 go up that leg 42 is close respectively to compress on these times legs 32 that are combined in counterdie 3, and with two extensions 212 of each coil 21 respectively clamping be positioned 422,322 of 412,321 of the front wall segments of corresponding upper and lower leg 42,32 and rear wall sections, this base 24 is to be contained in this to be installed in 5 bottoms, space with coil 21 equally.

As shown in figure 11, each base 24 and coil 21 are ccontaining be positioned 4,3 of upper and lower moulds after, then will contain the made fluidised form coating fluid of ferroalloy powder, the hole 411 of injecting by patrix 4 is injected and is full of this and is installed in 5 upper ends, space, becomes the solid-state knot coating 23 that is coated on base 24 and coil 21 tops to condense.

Conclude above-mentioned, inductance element 2 of the present utility model is by made knot coating 23 one-body molded base 24 and coil 21 tops of being coated on of ferroalloy powder, make 21 of made cladding that integrally combines 22 and coils, can there be the space, and it is can effectively promote the quality of made inductance element, so very practical really and progressive.

Claims (6)

1. inductance element, comprise the cladding that a coil and is coated on the coil outside, it is one curved around pitch of the laps portion that pre-fixing turn forms along a central axis by a lead that this coil has, and two extensions that extend outward by these pitch of the laps portion two ends respectively, it is characterized in that: this cladding be by one on the other knot coating and a base seamlessly integrally combine constitute, and this knot coating structurally be fill close ooze on this base with this winding section in, enclose in this knot coating and this base and the winding section inclusion of this coil covered.

2. inductance element as claimed in claim 1, it is characterized in that: this base has one by the tank of one end face toward lower recess, an and jack-post that erectly is built up in this tank centre, this tank has two side opening ends, the pitch of the laps portion of this coil is contained in the tank of this base, and be linked in this jack-post outside, and this two extension of this coil is corresponding respectively these side opening ends that pass this tank.

3. inductance element as claimed in claim 1 is characterized in that: this two extension is one high and one lowly to be extended outward by these pitch of the laps portion two ends respectively.

4. inductance element as claimed in claim 1 is characterized in that: this inductance element more includes two respectively by the past vertically extending in the same way kink of the end of these extensions.

5. as claim 1,2,3 or 4 described inductance elements, it is characterized in that: this coil is curved around forming by rectangular flat lead.

6. as claim 1,2,3 or 4 described inductance elements, it is characterized in that: this coil is curved around forming by rectangular wire lead.

Images