CN108973009A - Core assembly and preparation method thereof - Google Patents
Core assembly and preparation method thereof Download PDFInfo
- Publication number
- CN108973009A CN108973009A CN201810728476.5A CN201810728476A CN108973009A CN 108973009 A CN108973009 A CN 108973009A CN 201810728476 A CN201810728476 A CN 201810728476A CN 108973009 A CN108973009 A CN 108973009A
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- magnet
- core assembly
- shell
- magnetic conductive
- conductive part
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of core assembly and preparation method thereof, the core assembly includes shell, at least one first magnet and at least one second magnet, the shell is formed with accommodating cavity, first magnet and the second magnet are respectively positioned in the accommodating cavity, and the lower surface of second magnet is abutted with the bottom wall of the accommodating cavity, first magnet is set to the upper surface of second magnet, the shell, the first magnet and the second magnet integrated injection molding.Technical solution of the present invention is intended to prevent the magnetism of core assembly to be affected, and improves the assembly efficiency of core assembly.
Description
Technical field
The present invention relates to magnet mounting technology field, in particular to a kind of core assembly and preparation method thereof.
Background technique
Laser scanner is also laser galvanometer, by X-Y optical scanning head, electric drive amplifier and optical reflecting lens group
At.The signal that computer controller provides is by drive amplification circuit drives optical scanning head, to control laser beam in X-Y plane
Deflection.It is magnetic core that wherein the galvanometer head of laser galvanometer, which is all made of as permanent magnet, and then makes its rotation by automatically controlled, is had
Preferable response performance.Due to the accuracy of laser technology, magnetic affected magnetic core is easy to cause control accuracy decline, from
And influence the effect of laser processing.Existing core assembly is all that magnet is fixed to each other in such a way that glue is adhesively fixed,
Magnet and shell are fixed to each other again, the mode for bonding connection influences the magnetism of magnet, and reduces the dress of core assembly
With efficiency.
Summary of the invention
The main object of the present invention is to provide a kind of core assembly, it is intended to and prevent the magnetism of core assembly to be affected, and
And improve the assembly efficiency of core assembly.
To achieve the above object, core assembly provided by the invention, comprising: shell, at least one first magnet and at least
One second magnet, the shell are formed with accommodating cavity, and first magnet and the second magnet are respectively positioned in the accommodating cavity, and institute
The lower surface for stating the second magnet is abutted with the bottom wall of the accommodating cavity, and first magnet is set to the upper table of second magnet
Face, the shell, the first magnet and the second magnet integrated injection molding.
Optionally, the surface of the shell is formed with opening, and the accommodating cavity is connected to by the opening with external environment, and
The part of first magnet is appeared.
Optionally, the core assembly further includes at least two magnetic conductive parts being placed in the accommodating cavity, two magnetic conductions
Part is arranged at intervals at the opposite two sides of second magnet；
One surface of the magnetic conductive part fits in the second magnet, and another surface fits in shell.
Optionally, the shell is additionally provided at least two through holes, and the through hole connects the accommodating cavity and external environment
Logical, a through hole appears the part of a magnetic conductive part.
Optionally, the side-facing depressions of the magnetic conductive part form at least a positioning groove, and the shell is formed at least one positioning
Convex ribs, a positioning convex tendon protrude into a locating slot and position the shell and the magnetic conductive part.
Optionally, the top depression of the magnetic conductive part forms resigning mouthful, and the inner wall of the shell convexes to form boss, described
Boss is connected to the resigning mouthful.
Optionally, the shell forms at least one away from the surface indentation of the accommodating cavity and crosses air drain, the shell also shape
At there is injecting hole, the injecting hole is connected to the air drain of crossing.
The production method that the present invention also proposes a kind of core assembly, the production method of the core assembly include any of the above-described institute
The core assembly stated, the core assembly include at least one first magnet and at least one second magnet, first magnet fitting and
One surface of second magnet, the core assembly further include shell, and the shell is formed with accommodating cavity, first magnet
It is placed in the accommodating cavity with second magnet；
The shell is injection molding setting.
The production method of the core assembly the following steps are included:
First magnet and the second magnet absorption are fixed；
It is defined by relative position of the localization tool to the first magnet and the second magnet；
The first magnet for completing positioning and the second magnet are put into mold, plastic cement is injected to mold.
Optionally, after the step that the first magnet and the second magnet absorption is fixed further include:
Magnetic conductive part fitting is adsorbed in the opposite two sides of the second magnet；
It is defined by relative position of the localization tool to magnetic conductive part and the second magnet.
Optionally, after described the step of the first magnet for completing positioning and the second magnet are put into mold further include:
The magnetic conductive part that opposite second magnet completes positioning is put into mold with the first magnet and the second magnet simultaneously.
Technical solution of the present invention is by being molded shell in the first magnet and the second magnet, thus by the first magnet and the
Two magnets are assemblied in shell.Due to there is no the first magnet, the second magnet and shell to be fixed using glue, institute to avoid
Influence of the glue to the first magnet and the second magnet magnetism, and the step of eliminating gluing, so that the assembly of core assembly
It is more convenient.Such technical solution of the present invention can prevent the magnetism of core assembly to be affected, and improve core assembly
Assembly efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of core assembly of the present invention；
Fig. 2 is the main view of one embodiment of core assembly of the present invention；
Fig. 3 be Fig. 2 in core assembly along A-A to cross-sectional view；
Fig. 4 is the perspective view of the explosion of one embodiment of core assembly of the present invention；
Fig. 5 is a kind of flow chart of the production method of core assembly provided by the invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Core assembly | 55 | Cross air drain |
| 10 | First magnet | 57 | Accommodating cavity |
| 30 | Second magnet | 70 | Magnetic conductive part |
| 50 | Shell | 71 | Resigning mouthful |
| 51 | Opening | 73 | Locating slot |
| 53 | Through hole |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention proposes a kind of core assembly 100.
Referring to figs. 1 to Fig. 5, the core assembly 100 that technical solution of the present invention proposes includes shell, at least one first magnet 10
And at least one second magnet 30, the shell 50 are formed with accommodating cavity 57, first magnet 10 and the equal position of the second magnet 30
In in the accommodating cavity 57, and the lower surface of second magnet 30 is abutted with the bottom wall of the accommodating cavity 57, first magnetic
Body 10 be set to second magnet 30 upper surface, the shell 50, the first magnet 10 and 30 integrated injection molding of the second magnet at
Type.
Technical solution of the present invention is by being molded shell 50 in the first magnet 10 and the second magnet 30, thus by the first magnetic
Body 10 and the second magnet 30 are assemblied in shell 50.Due to not having using glue to the first magnet 10, the second magnet 30 and shell
50 are fixed, so avoiding the glue influence magnetic to the first magnet 10 and the second magnet 30, and eliminate gluing
Step, so that the assembly of core assembly 100 is more convenient.Such technical solution of the present invention can prevent the magnetic of core assembly 100
Property is affected, and improves the assembly efficiency of core assembly 100.
In the embodiment of the application, the setting substantially in the shape of a rod of the first magnet 10, bottom surface and cross section are substantially in
Rectangle setting, the shape of second magnet 30 are substantially in cuboid setting, it is to be understood that the core assembly 100 has phase
Mutually vertical length direction, width direction and short transverse, the up and down direction is short transverse namely upper surface and following table
Face is two surfaces opposite in short transverse.The surface and 30 long side of the second magnet that the long side and broadside of first magnet 10 are formed
The surface formed with broadside is bonded setting, and such setting can make core assembly 100 preferably work.
In the embodiment of the application, first magnet 10 and the second magnet 30 are to magnetize before being molded, to keep away
Exempt from the problem of can not magnetizing after magnet injection molding.It should be noted that the maximum temperature of the plastic cement for injection molding is less than first
Magnet 10 and the second magnet 30 generate the temperature of demagnetization, so set, the demagnetization of core assembly 100 is prevented, to be unfavorable for work
Make.In the present embodiment, thermal insulation layer can be set between the first magnet 10,30 opposite shell 50 of the second magnet, the thermal insulation layer
Material can be made of the material with heat-insulated and paramagnetism speciality, so that plastic cement when injection molding be made to be transmitted to the first magnet 10
It is lower with the temperature of the second magnet 30, reduce the temperature influence magnetic to the first magnet 10 and the second magnet 30.The application's
In one embodiment, which can be the lesser mica net of thickness, and mica has preferable heat insulating function, by its tabula in outer
The area of thermo-contact can be reduced between shell 50 and the first magnet 10, the second magnet 30, to reduce heat transference efficiency.And it is netted
Structure can make the first magnet 10 and 30 magnetic field of the second magnet unaffected, in this way, preferable heat-insulated paramagnetic properties may be implemented.
Referring to Fig.1, Fig. 3, Fig. 4, in the embodiment of the application, the surface of the shell 50 is formed with opening 51, institute
It states opening 51 to be connected to the accommodating cavity 57 with external environment, and the part of first magnet 10 is appeared.Setting opening 51
The intensity in magnetic field is not covered and influenced by shell 50 convenient for the magnetic field of the first magnet 10, and can be convenient to 10 He of the first magnet
The injection molding of second magnet 30 improves the dress of core assembly 100 to keep the connection of the first magnet 10 and the second magnet 30 more stable
With efficiency.The area that the area that 51 edge of opening is enclosed, as the first magnet 10 appear, the size of the area can root
It is set according to actual needs, if the magnetic field convenient for guaranteeing core assembly 100, and convenient for injection molding.
In the embodiment of the application, the core assembly 100 further includes being placed in the accommodating cavity 57 at least
Two magnetic conductive parts 70, two magnetic conductive parts 70 are arranged at intervals at the opposite side of second magnet 30；
One surface of the magnetic conductive part 70 fits in the second magnet 30, and another surface fits in shell 50.Magnetic conductive part is set
70 can generate magnetic field with the first magnet 10, the second magnet 30 jointly, thus the magnetic of enhancing the first magnet 10 and the second magnet 30
Power.In the present embodiment, it can first magnetize to magnetic conductive part 70, it is made to have higher magnetic force, it is made to be attached at second
Magnet 30, and after being injection molding, magnetic force supplement is carried out to the second magnet 30, then by the second magnet 30 to the magnetic force of the first magnet 10
It is supplemented, the magnetism of the core assembly 100 after injection molding is prevented to be affected.The magnetic conductive part 70 is made of paramagnetic material,
Specifically, the magnetic conductive part 70 can use SPCC (cold rolled carbon steel sheet) steel disc, the steel disc have preferable paramagnetism, and at
This is cheap, comprehensive preferable.
In the embodiment of the application, a surface of the magnetic conductive part 70 and the high surface formed with broadside of the second magnet 30
Fitting setting, such setting can make core assembly 100 preferably work.Also, the outer cross section product and the of the magnetic conductive part 70
Two magnet 30 is high close with the region that broadside is enclosed, to make the compact-sized of core assembly 100, reduces installation space.
In the embodiment of the application, the shell 50 is additionally provided at least two through holes 53, and the through hole 53 is by institute
It states accommodating cavity 57 to be connected to external environment, a through hole 53 appears the part of a magnetic conductive part 70.That is, one runs through
The setting of 53 face of hole, one magnetic conductive part 70, the area of the through hole 53 is the area that magnetic conductive part 70 appears, and the size of the area can
To be set according to actual needs.In the present embodiment, which can be circular hole or square hole, as long as convenient for guaranteeing
The magnetic field of core assembly 100, and convenient for injection molding.
Reference figure, 4, in the embodiment of the application, the side-facing depressions of the magnetic conductive part 70 form at least a positioning groove
73, the shell 50 is formed with an at least positioning convex tendon, and a positioning convex tendon protrudes into a locating slot 73 will be described outer
Shell 50 and the magnetic conductive part 70 position.Locating slot 73 is set and is convenient for positioning of the localization tool to magnetic conductive part 70 and the second magnet 30,
And when the first magnet 10, the second magnet 30 and the magnetic conductive part 70 that will position completion are put into mold injection, it is convenient for injection moulding plastic
Positioning convex tendon is formed after injection mold, and abuts and is fastened in locating slot 73, to keep shell 50 and the fixation of magnetic conductive part 70 more steady
Gu.
In the embodiment of the application, the top depression of the magnetic conductive part 70 forms resigning mouthful 71, the shell 50
Inner wall convexes to form boss, and the boss is connected to the resigning mouthful 71.By the resigning mouthful of the top setting recess of magnetic conductive part 70
71, when injection molding, circulates to form one positioned at the not ipsilateral plastic cement of the first magnet 10 and the second magnet 30, to realize that shell 50 is whole
The integraty of body, and it is made to have preferable stability.The quantity of resigning mouthful 71 is multiple, each magnetic conduction in the present embodiment
The top both ends of part 70 are equipped with resigning mouthful 71, and the first magnet 10 and the second magnet 30 are located at when so as to preferably make injection molding
The plastic cement of surrounding is coupled integral.
Further, the shell 50 forms at least one away from the surface indentation of the accommodating cavity 57 and crosses air drain 55, described
Shell is also formed with injecting hole, and the injecting hole is connected to the air drain of crossing.Air drain 55 was formed convenient for the injection molding to shell 50
Molding, and 50 each section of shell can be made to be linked in one, convenient for molding, improve the stability of shell 50.When completion is to mold
Injection molding after, it is cooling to core assembly 100, injecting hole can be removed after die sinking, to make the outer surface low of core assembly 100
Freely, it is easy to use.
Referring to Fig. 5, the present invention also proposes a kind of production method for making above-mentioned core assembly 100, the core assembly 100
Production method the following steps are included:
Step S10；First magnet 10 and the absorption of the second magnet 30 are fixed；
It also needs to perform the following operation before step S10, magnetize first to the first magnet 10 and the second magnet 30,
Magnetic very strong rare-earth permanent magnet can be used, " magnetize " to common magnet, that is, common magnet is sucked；It can also be covered with coil general
On logical magnet, with high current to the method for coil discharge, magnetize to magnet (usually charged after several hectovolts with large capacitor,
To coil discharge).It is noted that current direction, the magnetic field for generating coil are consistent with the magnetic field of magnet when magnetizing.Likewise, to leading
The identical mode that magnetizes can also be used in magnetic part 70.
Step S20；It is defined by relative position of the localization tool to the first magnet 10 and the second magnet 30；It can manage
Solution, which is made of diamagnetism material, in order to be inhaled when being pre-positioned to core assembly 100
It is attached and lead to not work, specifically, can be using copper or plastic part etc., as long as convenient for positioning.
Step S30；The first magnet 10 for completing positioning and the second magnet 30 are put into mold, plastic cement is injected to mold.Modeling
The injection molding process process of part mainly includes that molding---- filling --- (gas is auxiliary, and water is auxiliary) pressure maintaining --- cooling --- is opened
Mould --- 6 stages such as demoulding.Since magnetic part is easy to appear demagnetization at high temperature, so needing to control the temperature of plastic cement.
In this way, the production method of the core assembly 100 in the application can preferably realize the production of core assembly 100.
Further, after the step that the first magnet 10 and the second magnet 30 are adsorbed to fixation further include:
The fitting of magnetic conductive part 70 is adsorbed in the opposite two sides of the second magnet 30；In the present embodiment, magnetic conductive part 70 is inhaled
The surface that the broadside and height for investing the second magnet 30 are enclosed, can also be adsorbed in the second magnet 30 according to actual needs certainly
Other surfaces.
It is defined by relative position of the localization tool to magnetic conductive part 70 and the second magnet 30.It can be understood that this is fixed
Position jig has positioning column and retaining convex rib, and when retaining convex rib abuts the second magnet 30, positioning column is completed when abutting locating slot 73
Positioning to the second magnet 30 and magnetic conductive part 70.
Further, it is also wrapped after described the step of the first magnet 10 for completing positioning and the second magnet 30 are put into mold
It includes:
The magnetic conductive part 70 that opposite second magnet 30 completes positioning is put into mould with the first magnet 10 and the second magnet 30 simultaneously
Tool.
Likewise, localization tool has multiple retaining convex ribs, a retaining convex rib abuts the second magnet 30, and another retaining convex rib supports
The first magnet 10 is connect, the positioning of the first magnet 10 and the second magnet 30 is completed.Then the first magnet 10, second of positioning will be completed
Magnet 30 and magnetic conductive part 70 are put into mold simultaneously, and injecting plastic cement by Shooting Technique can be completed the production of core assembly 100.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of core assembly characterized by comprising shell, at least one first magnet and at least one second magnet, it is described
Shell is formed with accommodating cavity, and first magnet and the second magnet are respectively positioned in the accommodating cavity, and under second magnet
Surface is abutted with the bottom wall of the accommodating cavity, and first magnet is set to the upper surface of second magnet, the shell, first
Magnet and the second magnet integrated injection molding.
2. core assembly as described in claim 1, which is characterized in that the surface of the shell is formed with opening, the opening
The accommodating cavity is connected to external environment, and the part of first magnet is appeared.
3. core assembly as described in claim 1, which is characterized in that the core assembly further includes being placed in the accommodating cavity
Interior at least two magnetic conductive parts, two magnetic conductive parts are arranged at intervals at the opposite two sides of second magnet；
One surface of the magnetic conductive part fits in the second magnet, and another surface fits in shell.
4. core assembly as claimed in claim 3, which is characterized in that the shell is additionally provided at least two through holes, described to pass through
The accommodating cavity is connected to by perforation with external environment, and a through hole appears the part of a magnetic conductive part.
5. core assembly as claimed in claim 3, which is characterized in that the side-facing depressions of the magnetic conductive part form at least one positioning
Slot, the shell are formed with an at least positioning convex tendon, a positioning convex tendon protrude into the shell in a locating slot and
The magnetic conductive part positioning.
6. core assembly as claimed in claim 3, which is characterized in that the top depression of the magnetic conductive part forms resigning mouthful, institute
The inner wall for stating shell convexes to form boss, and the boss is connected to the resigning mouthful.
7. such as core assembly described in any one of claims 1 to 6, which is characterized in that the shell deviates from the accommodating cavity
Surface indentation form at least one and cross air drain, the shell is also formed with injecting hole, and the injecting hole is connected to the air drain excessively.
8. a kind of production method of core assembly, the production method of the core assembly includes such as the magnetic core group in claim 1 to 7
Part, which is characterized in that the production method of the core assembly the following steps are included:
Step S10: the first magnet and the second magnet absorption are fixed；
Step S20: it is defined by relative position of the localization tool to the first magnet and the second magnet；
Step S30: being put into mold for the first magnet for completing positioning and the second magnet, injects plastic cement to mold.
9. the production method of core assembly as claimed in claim 8, which is characterized in that after step slo, step S20 it
Before, further includes:
Magnetic conductive part fitting is adsorbed in the opposite two sides of the second magnet；
It is defined by relative position of the localization tool to magnetic conductive part and the second magnet.
10. the production method of core assembly as claimed in claim 9, which is characterized in that first magnetic that positioning will be completed
After the step of body and the second magnet are put into mold, and before injecting plastic cement to mold, further includes:
The magnetic conductive part that opposite second magnet completes positioning is put into mold with the first magnet and the second magnet simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728476.5A CN108973009B (en) | 2018-07-04 | 2018-07-04 | Magnetic core assembly and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728476.5A CN108973009B (en) | 2018-07-04 | 2018-07-04 | Magnetic core assembly and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108973009A true CN108973009A (en) | 2018-12-11 |
| CN108973009B CN108973009B (en) | 2020-10-02 |
Family
ID=64536977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728476.5A Active CN108973009B (en) | 2018-07-04 | 2018-07-04 | Magnetic core assembly and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108973009B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944182A (en) * | 1972-05-12 | 1976-03-16 | Toko, Inc. | Apparatus for manufacturing high-frequency coil devices |
| CN1238538A (en) * | 1998-06-05 | 1999-12-15 | 株式会社村田制作所 | Method of producing inductor |
| CN101408179A (en) * | 2007-10-10 | 2009-04-15 | 松下电工株式会社 | Method for manufacturing rotor portion of motor integrated type pump and motor integrated type pump equipped with the rotor portion |
| CN103489622A (en) * | 2012-06-08 | 2014-01-01 | 胜美达集团株式会社 | Method of manufacturing magnetic element and magnetic element |
| CN104416740A (en) * | 2013-08-30 | 2015-03-18 | 北京泰和磁记录制品有限公司 | Magnetic card head and production method thereof as well as magnetic card reader |
-
2018
- 2018-07-04 CN CN201810728476.5A patent/CN108973009B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944182A (en) * | 1972-05-12 | 1976-03-16 | Toko, Inc. | Apparatus for manufacturing high-frequency coil devices |
| CN1238538A (en) * | 1998-06-05 | 1999-12-15 | 株式会社村田制作所 | Method of producing inductor |
| CN101408179A (en) * | 2007-10-10 | 2009-04-15 | 松下电工株式会社 | Method for manufacturing rotor portion of motor integrated type pump and motor integrated type pump equipped with the rotor portion |
| CN103489622A (en) * | 2012-06-08 | 2014-01-01 | 胜美达集团株式会社 | Method of manufacturing magnetic element and magnetic element |
| CN104416740A (en) * | 2013-08-30 | 2015-03-18 | 北京泰和磁记录制品有限公司 | Magnetic card head and production method thereof as well as magnetic card reader |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108973009B (en) | 2020-10-02 |
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Effective date of registration: 20201015 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: GOERTEK Inc. |