CN1967745A

CN1967745A - Reactance device

Info

Publication number: CN1967745A
Application number: CNA2006101427404A
Authority: CN
Inventors: 中嶋俊治; 佐伯英人
Original assignee: Tamura Corp
Current assignee: Tamura Corp
Priority date: 2005-10-31
Filing date: 2006-10-30
Publication date: 2007-05-23
Anticipated expiration: 2026-10-30
Also published as: KR20070046738A; CN1967745B; JP2007123767A; JP4738981B2; KR101056381B1

Abstract

The present invention provides a reactance device which comprises a first iron core having a middle leg and at least an outside leg, a second iron core which faces the middle leg of the first iron core and at least an outside leg, a gasket arranged in the clearance formed between the inside leg and the second iron core, and a coil connecting to the circle surface of the inside leg of the first iron core. The gasket comprises at least a projecture formed on at least one surface of the gasket. The end surface of said projecture, which is a plane, is contacted with the second iron core or the middle leg of the first iron core to support the second iron core or the middle leg of the first iron core.

Description

Reactor

Technical field

The present invention relates to a kind of reactor (reactor) that is used for power supply unit, relate in particular to a kind of reactor that is used for reducing interference.

Background technology

Usually, as shown in figure 11, reactor uses the iron core 12 that forms

E core

2 and 4 combinations of the I sections heart.Structure unshakable in one's determination 12 is so that form gap g between the front end face of E core 2 crura intermedium 2a and the I sections heart 4 bottom surface section with respect to the front end face of crura intermedium 2a.In the g of gap, pad 1S provides as shown in figure 12, and it is to use the perspective view of the reactor 20 of iron core 12.Pad (spacer) 1S is as the part that keeps gap g and be used for stoping the appearance of the interference that is caused by 12 vibrations unshakable in one's determination.Coil 5 be arranged on E core 2 crura intermedium 2a around.The I sections heart 4 each A place, junction surface between each front end surface of the I sections heart 4 and E core 2 outside pin 2b is welded to E core 2.

The example that constitutes the reactor that has pad 1S in the g of gap is open in the interim publication number No.2004-140055 of Japan Patent.

Figure 13 is the perspective view of pad 1S.This pad 1S is made by the moulded resin that thickness t equals gap g size.If thickness is too big, just form the space at joint portion A place.In this case, the E core 2 and the I sections heart 4 just can not be welded together.Therefore, pad 1S just must form and have high accuracy.

Thereby the Recombinant Interferon that reactor produces becomes a uniform in-plane zone by the whole zone that the accuracy that increases pad 1S upper surface and lower surface is reduced each upper surface of pad 1S and lower surface.Yet using moulding machine that the whole zone of each upper surface of pad 1S and lower surface is become a uniform in-plane zone is non-ly to become difficult.

Form the plane even the surface looks, but the exact shape on surface is concavo-convex inclination, amplification illustrates as Figure 15.Therefore, under the situation in pad 1S is inserted into gap g, caused space b by the concavo-convex and inclination of pad 1S between the lower surface of the front end face of E core 2 crura intermedium 2a and the I sections heart 4.In this case, can not realize reducing disturbing.

Summary of the invention

Advantage of the present invention has been to provide a kind of reactor with pad, and iron core can be supported securely thereby the formation of the surface of this pad has high-precision uniform planar and realize reducing interference.

According to one aspect of the invention, one reactor is provided, it comprises first iron core with crura intermedium and at least one outside pin, one is positioned at towards second iron core of first crura intermedium unshakable in one's determination and at least one outside pin, one is arranged on the pad in the gap that forms between the crura intermedium and second iron core, and a coil that is connected to the circumferential surface of first crura intermedium unshakable in one's determination.This pad has at least one protrusion that forms at least one surface of pad.The end face of this protrusion is plane and the crura intermedium that contacts second unshakable in one's determination or first iron core to support the crura intermedium of second unshakable in one's determination or first iron core.

This structure has this structure, just may stop the appearance of first and second iron coring vibrations, because can make the end face of protrusion closely contact first iron core.

Aspect at least one, first iron core is an E core, and second iron core is the I sections heart.

Aspect at least one, the end face of at least one protrusion of pad is the uniform planar with pinpoint accuracy.

Aspect at least one, at least one protrusion comprises a plurality of protrusions.

This structure makes supports second iron core to become possibility to reduce reliably to disturb by a plurality of protrusions securely.

Aspect at least one, pad has tabular rectangular profile.In this case, a plurality of protrusions form at least one so that a plurality of protrusion extends along at least one edge of upper surface and lower surface at pad upper surface and lower surface and are provided with.

Aspect at least one, pad has tabular rectangular profile.In this case, a plurality of protrusions form at least one so that a plurality of protrusion extends along at least one diagonal of upper surface and lower surface at pad upper surface and lower surface and are provided with.

Aspect at least one, reactor further comprises a vibration-isolation and insulating material, and fill with this material in the space between at least one outside pin of coil and the outer circumferential surface.In this case, vibration-isolation and insulating material extruding coil and at least one outside pin.

Because vibration-isolation and insulating material extruding coil and at least one outside pin, so may more effectively reduce by the optimal effectiveness of pad and vibration-isolation and insulating material to disturb.

Aspect at least one, the excircle of coil windings line partly has the step portion that winding wire stops, and also provides vibration-isolation and insulating material in step portion.

Because the circumferential section of step portion is filled with vibration-isolation and insulating material, the space that is produced by the coil step portion also is full of vibration-isolation and insulating material.

Description of drawings

Figure 1A is the plane graph of the pad that uses in the reactor according to first embodiment, and Figure 1B is the end view of pad shown in Figure 1A.

Fig. 2 is the plane graph of the E core that is provided with in the reactor.

Fig. 3 shows a state, and its Intermediate gasket is inserted among the gap g that forms between the front end face of E core and I sections heart crura intermedium.

Fig. 4 is a cross-sectional view unshakable in one's determination, wherein coil be provided at the E core crura intermedium around.

Fig. 5 is the reactor cross section of bonding pad.

Fig. 6 A is the plane graph of the pad that uses in the reactor according to second embodiment, and Fig. 6 B is the end view of pad shown in Fig. 6 A.

Fig. 7 A and 7B show the example of the pad that is formed with protrusion in its surface.

Fig. 8 A is the plane graph of the pad that uses in the reactor according to the 3rd embodiment, and Fig. 8 B is the end view of pad shown in Fig. 8 A.

Fig. 9 shows the distortion of the pad shown in Fig. 8 A and the 8B, and it is provided with other protrusion.

Figure 10 shows the distortion of the pad shown in Fig. 9, and its another surface is provided with protrusion.

Figure 11 is the end view of the common E core and the I sections heart.

Figure 12 is the perspective view of traditional reactor.

Figure 13 is the perspective view of the pad that is provided with in traditional reactor.

Figure 14 has been the illustration interval that between the I sections heart and E core, forms by having the error between gap size and the spacer thickness.

Figure 15 is the shortcoming that illustrates conventional reactor.

Embodiment

Below, be described with reference to the drawings according to embodiments of the invention.

First embodiment

Figure 1A is the plane graph according to the pad that uses in reactor 30 (referring to Fig. 4) of first embodiment of the invention.Figure 1B is the end view of pad 1.Pad 1 has rectangular profile when overlooking, and have the rib shape and protrude 1d and 1d along

long side

1b and 1b ', from a minor face 1c to another minor face 1c ', extend, protrude the surperficial accuracy of 1d and 1d and increased each, so that 25 (combinations of the E core 22 and the I sections heart 24) unshakable in one's determination can be supported in the reactor 30 securely.

Although be difficult to form whole gasket surface zone with high precision; each

protrusion

1d and 1d surface are (promptly; have undersized relatively elongate surface) can form uniform planar with pinpoint accuracy, have high-precision uniform planar because can be formed corresponding to each cavity part of protruding the moulding machine on 1d and 1d surface.

Although the protrusion length of the protrusion 1d shown in Figure 1B is relatively large, each protrusion 1d can form and make it protrude a little from body surface a.For example, protruding 1d is 0.02mm from the length that body surface a protrudes.Shown in Figure 1A and 1B,, locate to form recess 1e at each minor face 1c and 1c '.

Fig. 2 is the plane graph of E core 22.Pad 1 is placed on the front end face of E core 22 crura intermedium 22a.This E core 22 has the thin silicon steel plate of layer structure, and has welding portion at central part, and wherein the thin silicon steel plate is welded to one another to have single chip architecture.Although piece 3a forms welding owing to weld at welding portion 3, the protrusion that piece 3a causes is eliminated by each groove 1e and 1e.E core 22 has outside

22b and 22b two ends.

Fig. 3 shows the state that pad 1 inserts the gap g that forms between the front end face of crura intermedium 22a and the I sections heart 24.As shown in Figure 3, the I sections heart 24 is supported by outstanding (projection) 1d that forms in pad 1 both sides and 1d.Because outstanding 1d is relative with the accuracy of each front end face of 1d higher, outstanding 1d and each front end face of 1d closely contact the lower surface of the I sections heart 24 so pad 1 can be placed among the g of gap.Because outstanding 1d and 1d form in two sides of pad 1 (that is, surpass and protrude the support I sections heart 24), so pad 1 symmetrical mode is supported the I sections heart 24.

Fig. 4 is the side cross section of the iron core 25 of coil 5B connection.As shown in Figure 4, coil 5B twines around the crura intermedium 22a of E core 22.Because between the inner surface of E core 22 and each outside pin 22b, form at interval 6, so vibration-isolation and insulating material are inserted in the interval 6.A kind of situation is arranged, and wherein lead does not have to form on unshakable in one's determination 5 outer round surface around crura intermedium 22a winding and step part 7 fully.If so, because remain in the reactor 30 at interval, so disturb and to effectively reduce even vibration-isolation and insulating material are inserted in the interval 6.

For this reason, in this embodiment, except vibration-isolation and insulating material be inserted at interval in 6 and pad 1 be inserted among the g of gap vibration-isolation and insulating material further be inserted in the step part 7.By this structure, can effectively reduce interference by the enhancement effect at vibration-isolation and insulating material and interval 1.

Fig. 5 is the cross section of reactor 30, and its Intermediate gasket 1 is arranged in gap g and vibration-isolation and insulating material 8 and is inserted into step part 7.Between the installation period of reactor 30, coil 5B twines around the crura intermedium 22a of E core 22, this pad 1 is arranged in the gap g of crura intermedium 22a front end face, and vibration-isolation and insulating material be inserted into 5B unshakable in one's determination each outside pin 22b and between the periphery gap in so that with vibration-isolation and filling insulating material step part 7.Then, the I sections heart 24 is placed on the E core 22, and when the I sections heart 24 extruding E cores 24, and the coupling part of the I sections heart 24 and E core 22 is welded together to have single chip architecture.The welding portion of the Reference numeral among Fig. 5 " 9 " the expression I sections heart 24 and E core 22.

Because vibration-isolation and insulating material 8 are in vibration-isolation and insulating material 8 by the state of the I sections heart 24 extruding, so the periphery of coil 5B, the inner surface of the side of each outside pin 22b and the I sections heart 24 is all pushed by vibration-isolation and insulating material 8.Therefore, the Recombinant Interferon that is caused by the

zone

10 and 10 of the periphery of coil 5B and the I sections heart 24 and E core 22 is effectively suppressed.

The space of filling corresponding to 25 windows unshakable in one's determination by vibration-isolation and insulating material 8 makes almost there is not remaining space, can effectively reduce by the extrusion effect of vibration-isolation and insulating material 8 and have the interference that the extruding of the pad 1 (its front end face forms has high-precision uniform planar) that protrudes 1d and 1d causes, the lower surface of the I sections heart 24 pushes this pad 1 and therefore closely contacts the lower surface of the I sections heart 24.Vibration-isolation and insulating material 8 for example are flexible member, cardboard, moulded resin or Nomex  Paper.

Second embodiment

Fig. 6 A is the plane graph that is used for according to the reactor pad 1F of second embodiment of the invention.Fig. 6 B is the end view of pad 1F.Pad 1F can be used for replacing the pad of reactor 30.In this embodiment, protruding 1d further protrudes one of them of 1d and 1d and forms in the outer side edges of groove 1e and at one that forms along the limit 1b of 1F and 1b '.Especially, protrude 1d along limit 1b ', the next door of the protrusion 1d of extension forms in addition.That is to say, on pad 1F, form 3 protrusions and support the I sections heart 24 to protrude by 3.Should be noted that and protrude further nearby forming of 1d at the protrusion 1d that forms along other limit of each groove 1e.

Fig. 7 A shows the pad (1G) as the distortion of Fig. 1 pad.Shown in Fig. 7 A, except being provided with on the upper surface two protrusion 1d, pad 1G is provided with two and protrudes 1d in addition at lower surface 1a '.

Fig. 7 B shows the pad (1H) as Fig. 6 A and 6B Intermediate gasket 1F distortion.Shown in Fig. 7 B, except being provided with on the upper surface three protrusion 1d, pad 1H is provided with three and protrudes 1d in addition at lower surface 1a '.Each

pad

1G and 1H can both be placed in the reactor so that at lower surface 1a ', and the front end face of the protrusion 1d of last formation closely near the front end face of E core 22 crura intermedium 22a, disturbs thereby further reduce.

The 3rd embodiment

Fig. 8 A is the plane graph that is used for according to the pad 1J of the reactor of third embodiment of the invention.Fig. 8 B is the end view of pad 1J.This pad 1J can be used for replacing the pad 1 of reactor 30.In this embodiment, on the upper surface of pad 1J, form a pair of

protrusion

1d and 1d so that described protrusion is set with the form of alphabetical X along the diagonal of upper surface 1a.Each front end face that protrudes 1d and 1d can both form the uniform planar with pinpoint accuracy.Because pad 1J can support iron core securely by closely contacting E core 24, so can reduce interference.

Fig. 9 shows the distortion (pad 1K) of pad 1J.As shown in Figure 9, protruding the protrusion 1d that extends along one shown in Fig. 8 A can form on upper surface 1a in addition.Figure 10 shows another distortion (pad 1L) of pad 1J.As shown in figure 10, pad 1L is at upper surface 1a ', on be formed with two or three protrude 1d (be similar to that two shown in Fig. 8 A on upper surface 1a are protruded or Fig. 9 shown in the setting of three protrusions).

Although the present invention has been described in detail with reference to its preferred embodiment, other embodiment also is possible.

For example, protruding the width of front end face of 1d and the quantity of the protrusion that forms on the upper surface of pad and lower surface can change.

Should be appreciated that above-mentioned each pad can both be used for having coil on its periphery and the reactor that do not have step part 7.

Claims

1. reactor, it comprises:

First iron core has crura intermedium and at least one outside pin;

Second iron core is positioned at towards first crura intermedium unshakable in one's determination and at least one outside pin;

Pad is arranged in the gap that forms between the crura intermedium and second iron core; And

Coil is connected to the circumferential surface of first crura intermedium unshakable in one's determination,

Wherein this pad has the protrusion that at least one forms at least one surface of pad, and

The end face of this protrusion is plane and the crura intermedium that contacts second unshakable in one's determination or first iron core to support the crura intermedium of second unshakable in one's determination or first iron core.

2. reactor according to claim 1, wherein:

First iron core is an E core; And

Second iron core is the I sections heart.

3. reactor according to claim 1, wherein:

The end face of at least one protrusion of pad is the uniform planar with pinpoint accuracy.

4. reactor according to claim 1, wherein at least one protrusion comprises a plurality of protrusions.

5. reactor according to claim 4, wherein:

Pad has tabular rectangular profile; And

A plurality of protrusions form at least one so that a plurality of protrusion extends along at least one edge of upper surface and lower surface at pad upper surface and lower surface and are provided with.

6. reactor according to claim 4, wherein:

Pad has tabular rectangular profile; And

A plurality of protrusions form at least one of the upper surface of pad and lower surface, are provided with so that a plurality of protrusion extends along at least one diagonal of upper surface and lower surface.

7. according to any described reactor in the claim 1 to 6, further comprise a vibration-isolation and insulating material, fill with this material in the space between outside pin of at least one of coil and the outer circumferential surface, wherein,

Vibration-isolation and insulating material extruding coil and at least one outside pin.

8. reactor according to claim 7, wherein:

The excircle of coil windings line partly has the step portion that winding wire stops; And

Vibration-isolation and insulating material also provide in step portion.