CN105489342A - Inductor used for class D power amplifier and manufacturing method of inductor - Google Patents
Inductor used for class D power amplifier and manufacturing method of inductor Download PDFInfo
- Publication number
- CN105489342A CN105489342A CN201610025706.2A CN201610025706A CN105489342A CN 105489342 A CN105489342 A CN 105489342A CN 201610025706 A CN201610025706 A CN 201610025706A CN 105489342 A CN105489342 A CN 105489342A
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- Prior art keywords
- body magnetic
- magnetic core
- cap body
- power amplifier
- class power
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 30
- 208000002925 dental caries Diseases 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 description 5
- 230000008520 organization Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- -1 and more preferably Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013066 combination product Substances 0.000 description 1
- 229940127555 combination product Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses an inductor used for a class D power amplifier. The inductor comprises a cap body magnetic core, two rod magnetic cores, two coil windings and a base. The top face of the cap body magnetic core is closed. An opening is formed in the bottom face of the cap body magnetic core so that two cavities can be formed. The two cavities are separated through a middle wall. The two rod magnetic cores are independent of the cap body magnetic core. The two rod magnetic cores are inserted in the two coil windings respectively and arranged in the two cavities respectively. The bottom face of the cap body magnetic core is sealed by and covered with the base. Terminals of coils are led out of electrode holes in the base. The invention further discloses a manufacturing method of the inductor. By means of the inductor, the production cycle can be effectively shortened, cost is reduced, and efficient and automatic production is achieved.
Description
Technical field
The present invention relates to a kind of magnetic electron parts, particularly relate to a kind of D class power amplifier inductance and preparation method thereof.
Background technology
At audio area, common audio amplifier circuit mainly contains category-A, category-B, AB class and D class four kinds.D class power amplifier is compared and other circuit main advantages: (1) volume is little; (2) efficiency is high; (3) cost is low.In 2-in-1 1 structural design of current D class, employing 3 or 4 magnetic core+coil+bases combine usually.As shown in Figure 1, its exploded perspective view as shown in Figure 2 for existing D class power amplifier induction structure.
This structure is in actual production process, and magnetic core coil need carry out multiple bearing assembling, and assembling process needs more instrument of controlling to carry out fastening, and fasteningly in curing process controls that instrument is non-disconnectable to be removed.Whole production process contraposition is complicated, and length consuming time, production efficiency is low.And combination product is not complete closure plane at top, there is gap.This gap causes in automation paster process, there is the problem not drawing material during vacuum slot absorbing material.
Summary of the invention
Main purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of D class power amplifier inductance and preparation method thereof, avoids the technological difficulties of existing scheme, and make this series products can realize the production of high automation degree.
For achieving the above object, the present invention is by the following technical solutions:
A kind of D class power amplifier inductance, comprise cap body magnetic core, two barred body magnetic cores, two coil windings and base, the end face of described cap body magnetic core is closed, the bottom surface upper shed of described cap body magnetic core and be formed with two cavitys, and separated by a midfeather between described two cavitys, described two barred body magnetic cores are independent of described cap body magnetic core, described two barred body magnetic cores insert in described two coil windings separately, and insert in described two cavitys respectively, described base is by the bottom surface capping of described cap body magnetic core, the terminal of described coil is drawn from the electrode hole described base.
Further:
Described cap body magnetic core is structure as a whole.
Described two cavitys are symmetrical on described cap body magnetic core.
The end face of described cap body magnetic core is complete plane.
Described barred body magnetic core and described cavity are matched in clearance, and gap size is preferably 0.1mm ~ 1mm.
Described cap body magnetic core and/or described barred body magnetic core are Mn-Zn soft magnetic ferrite material or soft magnetic metal material.
Described base and described cap body magnetic core are by glue thermosetting binder, and preferably, described glue is heat-curable epoxy resin or thermosetting silica type.
Make a manufacture method for described D class power amplifier inductance, comprise the following steps:
S1, prepare described cap body magnetic core, two barred body magnetic cores, two coil windings and bases;
S2, described two barred body magnetic cores are inserted described two coil windings separately, and insert in two cavitys of described cap body magnetic core respectively;
S3, described floor installation to be arranged on the bottom surface of cavities open at described cap body magnetic core, and the terminal of described coil is drawn from the electrode hole described base.
Further comprising the steps of between step S2 and S3:
To the bottom-surface coated glue of described cap body magnetic core installing described barred body magnetic core and described coil windings;
Further comprising the steps of after step s 3:
The thermosetting binder realizing glue is heated to the assembling part of described cap body magnetic core and described base.
Beneficial effect of the present invention:
Different from traditional D class power amplifier induction structure, the magnetic core of D class power amplifier inductance of the present invention comprises the cap body magnetic core and two the barred body magnetic cores separate with cap body magnetic core with two cavitys, during assembling, insert respectively again in two cavitys of cap body magnetic core after two barred body magnetic cores insert two coil windings separately, build base and namely complete encapsulation; The design that cavity and end face are closed offered by single cap body magnetic core in bottom surface, effectively can avoid the end face gap problem existing for multi-piece core splicing structure in the past; Meanwhile, namely the cavity coil windings packaging barred body magnetic core directly being loaded cap body magnetic core completes magnetic core assembling, also eliminates multi-piece core assembling process each other, effectively reduces operation; Instrument is controlled in a large amount of assembling location also reduced needed for existing project organization, also effectively prevent the problem that existing project organization needs to control instrument contraposition in follow-up glue curing process simultaneously; Do not need multi-piece core assembled, cap body magnetic core also more easily realizes automation material loading as individual part; The coil windings packaging barred body magnetic core also can realize automation material loading easily, and carries out the assembling of automation with cap body magnetic core.D class power amplifier inductor product of the present invention effectively can shorten the production cycle, reduces costs, and realizes high-efficient automatic and produces.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing D class power amplifier inductance;
Fig. 2 is the exploded perspective view of the D class power amplifier inductance shown in Fig. 1;
Fig. 3 is the structural representation of the cap body magnetic core in the embodiment of the present invention;
Fig. 4 is the structural representation of the barred body magnetic core in the embodiment of the present invention;
Fig. 5 is the structural representation of the coil windings in the embodiment of the present invention;
Fig. 6 is the structural representation of the base in the embodiment of the present invention;
Fig. 7 is that the D class power amplifier inductance of the embodiment of the present invention assembles exploded perspective view;
Fig. 8 is the equipment erect-position distribution map of the D class power amplifier inductance product automation assembling of the embodiment of the present invention.
Embodiment
Below embodiments of the present invention are elaborated.It is emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.
Consult Fig. 3 to Fig. 7, in one embodiment, a kind of D class power amplifier inductance, comprise cap body magnetic core 1, two barred body magnetic cores 21, 22, two coil windings 31, 32 and base 5, the end face of cap body magnetic core 1 is closed, the bottom surface upper shed of cap body magnetic core 1 and be formed with two cavity 1a, 1b, and two cavity 1a, separated by a midfeather between 1b, two barred body magnetic cores 21, 22 independent of cap body magnetic core 1, two barred body magnetic cores 21, 22 insert two coil windings 31 separately, in 32, be inserted with barred body magnetic core 21, two coil windings 31 of 22, 32 insert two cavity 1a respectively, in 1b, base 5 is by the bottom surface capping of cap body magnetic core 1, the terminal of coil is drawn from the electrode hole base 5.As shown in Figure 3, cap body magnetic core 1 can adopt but the side's of being not limited to tubular construction.As shown in Figure 4, barred body magnetic core 21,22 can adopt but be not limited to cylindrical structural.
In a preferred embodiment, cap body magnetic core 1 is structure as a whole.
In a preferred embodiment, two cavitys 1a, 1b are symmetrical on cap body magnetic core 1.
In a preferred embodiment, the end face of cap body magnetic core 1 is complete plane.
In a preferred embodiment, barred body magnetic core 21,22 and cavity 1a, 1b are matched in clearance, and gap size is preferably 0.1mm ~ 1mm.
Cap body magnetic core 1 and/or barred body magnetic core 21,22 can be MnZn or other soft magnetic ferrite materials or soft magnetic metal material.
Coil windings 31,32 can be enamel-cover circle line or flat enamelled wire.
In a preferred embodiment, base 5 and cap body magnetic core 1 are by glue thermosetting binder, and more preferably, glue is heat-curable epoxy resin or thermosetting silica type.
Position base 5 corresponding to coil terminals extraction can arrange pad, thus strengthens product stripping electrode power and shock resistance.
Different from traditional D class power amplifier induction structure, the magnetic core of the D class power amplifier inductance of above-described embodiment comprises the cap body magnetic core 1 and two the barred body magnetic cores 21,22 separate with cap body magnetic core 1 with two cavitys 1a, 1b, during assembling, insert respectively again in two cavitys 1a, 1b of cap body magnetic core 1 after two barred body magnetic cores 21,22 insert two coil windings 31,32 separately, build base 5 and namely complete encapsulation; The design that cavity and end face are closed offered by single cap body magnetic core 1 in bottom surface, effectively can avoid the end face gap problem existing for multi-piece core splicing structure in the past; Meanwhile, namely cavity 1a, 1b that the coil windings 31,32 packaging barred body magnetic core 21,22 directly loads cap body magnetic core 1 is completed magnetic core assembling, also eliminates multi-piece core assembling process each other, effectively reduce operation; Instrument is controlled in a large amount of assembling location also reduced needed for existing project organization, also effectively prevent the problem that existing project organization needs to control instrument contraposition in follow-up glue curing process simultaneously; Do not need multi-piece core assembled, cap body magnetic core 1 also more easily realizes automation material loading as individual part; The coil windings 31,32 packaging barred body magnetic core 21,22 also can realize automation material loading easily, and carries out automatic assembling with cap body magnetic core 1.The invention enables the product design of D class power amplifier inductance effectively can shorten the production cycle, reduce costs, realize high-efficient automatic and produce.
Base 5 also can realize automation material loading, and the semi-finished product after assembling with cap body magnetic core 1+ barred body magnetic core 21,22+ coil windings 31,32 carry out automation contraposition assembling.
Consult Fig. 3 to Fig. 8, a kind of manufacture method making D class power amplifier inductance, comprises the following steps:
S1, prepare cap body magnetic core 1, two barred body magnetic cores 21,22, two coil windings 31,32 and base 5;
S2, two barred body magnetic cores 21,22 are separately inserted two coil windings 31,32, and insert in two cavitys 1a, 1b of cap body magnetic core 1 respectively;
S3, base 5 is arranged on cap body magnetic core 1 arranges on the bottom surface of cavity 1a, 1b opening, and the terminal of coil is drawn from the electrode hole base 5.
In a preferred embodiment, further comprising the steps of between step S2 and S3: to the bottom-surface coated glue of cap body magnetic core 1 installing barred body magnetic core 21,22 and coil windings 31,32; Further comprising the steps of after step s 3: the thermosetting binder realizing glue is heated to the assembling part of cap body magnetic core 1 and base 5.
Consult Fig. 8, specifically assemble its assembling process of erect-position distribution explanation for one below in conjunction with assembling D class power amplifier inductance.
(1) at erect-position A, cap body magnetic core 1 realizes automation material loading;
(2) at erect-position B, barred body magnetic core 21,22 and coil windings 31,32 realize the assembling of automation material loading; Then cap body magnetic core 1 is transferred to erect-position B from erect-position A, then realize cap body magnetic core 1 and barred body magnetic core 21,22, coil windings 31,32 assembles;
(3) at erect-position C, the semi-finished product assembled send the coating realizing bonding glue 4 from erect-position B;
(4) at erect-position D, first base 5 realizes automation material loading, then positions assembling with the semi-finished product sent from erect-position C;
(5) at erect-position E, Shape correction is done to the leading foot of coil windings 31,32;
(6) erect-position F is meshbeltfurnace.The assembling part sent from erect-position D enters into the hot curing that meshbeltfurnace carries out bonding glue.
The high efficiency continuously adopting structural design as above and manufacture method can realize 2-in-1 1 inductance of D class power amplifier is produced.
Above content combines concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its execution mode that can also describe these makes some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. a D class power amplifier inductance, it is characterized in that, comprise cap body magnetic core, two barred body magnetic cores, two coil windings and base, the end face of described cap body magnetic core is closed, the bottom surface upper shed of described cap body magnetic core and be formed with two cavitys, and separated by a midfeather between described two cavitys, described two barred body magnetic cores are independent of described cap body magnetic core, described two barred body magnetic cores insert in described two coil windings separately, and insert in described two cavitys respectively, described base is by the bottom surface capping of described cap body magnetic core, the terminal of described coil is drawn from the electrode hole described base.
2. D class power amplifier inductance as claimed in claim 1, it is characterized in that, described cap body magnetic core is structure as a whole.
3. D class power amplifier inductance as claimed in claim 1, it is characterized in that, described two cavitys are symmetrical on described cap body magnetic core.
4. D class power amplifier inductance as claimed in claim 1, it is characterized in that, the end face of described cap body magnetic core is complete plane.
5. D class power amplifier inductance as claimed in claim 1, it is characterized in that, described barred body magnetic core and described cavity are matched in clearance, and gap size is preferably 0.1mm ~ 1mm.
6. the D class power amplifier inductance as described in any one of claim 1 to 5, is characterized in that, described cap body magnetic core and/or described barred body magnetic core are Mn-Zn soft magnetic ferrite material or soft magnetic metal material.
7. the D class power amplifier inductance as described in any one of claim 1 to 6, is characterized in that, described base and described cap body magnetic core are by glue thermosetting binder, and preferably, described glue is heat-curable epoxy resin or thermosetting silica type.
8. make a manufacture method for the D class power amplifier inductance as described in any one of claim 1 to 7, it is characterized in that, comprise the following steps:
S1, prepare described cap body magnetic core, two barred body magnetic cores, two coil windings and bases;
S2, described two barred body magnetic cores are inserted described two coil windings separately, and insert in two cavitys of described cap body magnetic core respectively;
S3, described floor installation to be arranged on the bottom surface of cavities open at described cap body magnetic core, and the terminal of described coil is drawn from the electrode hole described base.
9. manufacture method as claimed in claim 8, is characterized in that, further comprising the steps of between step S2 and S3:
To the bottom-surface coated glue of described cap body magnetic core installing described barred body magnetic core and described coil windings;
Further comprising the steps of after step s 3:
The thermosetting binder realizing glue is heated to the assembling part of described cap body magnetic core and described base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025706.2A CN105489342B (en) | 2016-01-14 | 2016-01-14 | A kind of D classes power amplifier inductance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025706.2A CN105489342B (en) | 2016-01-14 | 2016-01-14 | A kind of D classes power amplifier inductance and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105489342A true CN105489342A (en) | 2016-04-13 |
| CN105489342B CN105489342B (en) | 2018-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610025706.2A Active CN105489342B (en) | 2016-01-14 | 2016-01-14 | A kind of D classes power amplifier inductance and preparation method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367288A (en) * | 2017-07-27 | 2017-11-21 | 宁波中车时代传感技术有限公司 | A kind of micro fluxgate sensor preparation method |
| CN111724980A (en) * | 2020-07-01 | 2020-09-29 | 广州市德珑电子器件有限公司 | Manufacturing method of inductor with side surface provided with air gap and two-in-one structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1251684A (en) * | 1997-01-30 | 2000-04-26 | 脉冲工程公司 | Through-hole interconnect device with isolated wire-leads and component barriers |
| US20020130752A1 (en) * | 1998-02-27 | 2002-09-19 | Tdk Corporation | Pot-core components for planar mounting |
| CN101154494A (en) * | 2006-09-27 | 2008-04-02 | 胜美达电机（香港）有限公司 | Inductor |
| CN201465706U (en) * | 2009-06-04 | 2010-05-12 | 王琮怀 | Inductor assembly structure |
| TW201237897A (en) * | 2011-03-03 | 2012-09-16 | Curie Ind Co Ltd | Assembling magnetic component |
-
2016
- 2016-01-14 CN CN201610025706.2A patent/CN105489342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251684A (en) * | 1997-01-30 | 2000-04-26 | 脉冲工程公司 | Through-hole interconnect device with isolated wire-leads and component barriers |
| US20020130752A1 (en) * | 1998-02-27 | 2002-09-19 | Tdk Corporation | Pot-core components for planar mounting |
| CN101154494A (en) * | 2006-09-27 | 2008-04-02 | 胜美达电机（香港）有限公司 | Inductor |
| CN201465706U (en) * | 2009-06-04 | 2010-05-12 | 王琮怀 | Inductor assembly structure |
| TW201237897A (en) * | 2011-03-03 | 2012-09-16 | Curie Ind Co Ltd | Assembling magnetic component |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367288A (en) * | 2017-07-27 | 2017-11-21 | 宁波中车时代传感技术有限公司 | A kind of micro fluxgate sensor preparation method |
| CN107367288B (en) * | 2017-07-27 | 2023-11-21 | 宁波中车时代传感技术有限公司 | Preparation method of miniature fluxgate sensor |
| CN111724980A (en) * | 2020-07-01 | 2020-09-29 | 广州市德珑电子器件有限公司 | Manufacturing method of inductor with side surface provided with air gap and two-in-one structure |
| CN111724980B (en) * | 2020-07-01 | 2021-11-30 | 广州市德珑电子器件有限公司 | Manufacturing method of inductor with side surface provided with air gap and two-in-one structure |
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| CN105489342B (en) | 2018-02-27 |
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