CN113871276A - Filtering assembly of magnetron - Google Patents
Filtering assembly of magnetron Download PDFInfo
- Publication number
- CN113871276A CN113871276A CN202111157421.1A CN202111157421A CN113871276A CN 113871276 A CN113871276 A CN 113871276A CN 202111157421 A CN202111157421 A CN 202111157421A CN 113871276 A CN113871276 A CN 113871276A
- Authority
- CN
- China
- Prior art keywords
- choke coil
- magnetron
- welding
- cavity structure
- open cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 82
- 239000003990 capacitor Substances 0.000 claims description 38
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/18—Assembling together the component parts of electrode systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/14—Leading-in arrangements; Seals therefor
- H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a filtering component of a magnetron.A welding part at two ends of a choke coil is provided with an open cavity structure, and the open cavity structure can accommodate and wrap corresponding input and output terminals when in electric connection. When assembling or welding choke coil and corresponding input/output end, directly will correspond input/output terminal and place or insert and correspond choke coil both ends cavity, fixed or chucking function through cavity structure has, realize the automatic chucking of welding department, make choke coil welding part can not take place relative rotation or skew with corresponding input/output terminal, follow-up can further weld welding department, do not need additionally to use anchor clamps to fix a position during the welding, increase the equipment, the convenience of welding flow, the use of magnetron processing location frock has been reduced, filtering subassembly and magnetron production efficiency and product yield and quality have been improved.
Description
Technical Field
The invention relates to the technical field of magnetrons, in particular to a choke coil of a magnetron and a filter assembly thereof.
Background
A magnetron is a device for generating microwave energy, which can be applied to a microwave heating apparatus. The filter assembly is an important component of the magnetron and comprises a feedthrough capacitor, a choke coil, a magnetic core and other structures, a corresponding filter circuit of the magnetron basically adopts an LC loop structure and consists of an inductance component which is directly connected with a filament loop in series and a capacitor component which is connected with the ground in parallel, and high-frequency clutter led out from a cathode part is filtered besides the filament voltage meeting the lowest starting vibration requirement of a filament, so that the clutter is prevented from leaking and the EMC performance of the magnetron is ensured.
The inductance component that uses at present adopts two choke coils symmetry welding on two terminals of cathode lead wire basically, and this structure often adopts welding process to realize choke coil and punching electric capacity, cathode lead terminal welding when the equipment, needs anchor clamps to carry out spacing and fixed to the lead wire during the welding, ensures that choke coil and cathode lead terminal do not rotate, then welds by brazing.
According to the commonly adopted fixture positioning and assembling mode, the welding yield is reduced easily due to positioning errors, and meanwhile, the production efficiency is influenced by multiple fixture positioning procedures during assembly and production.
Disclosure of Invention
The invention aims at providing a filtering component of a magnetron, and the welding parts at the two ends of a choke coil are designed to be of a cavity structure which can contain and fix the choke coil and a cathode lead terminal, thereby solving the problems existing in the background and the prior art method and overcoming the defects in the prior art.
The technical scheme of the invention is as follows:
a filter assembly of a magnetron comprises a through capacitor, a magnetic core and a choke coil, wherein the choke coil surrounds the magnetic core, and welding parts are arranged at two ends of the choke coil and are a first welding part and a second welding part; the first welding part is electrically connected with the feedthrough capacitor output terminal, the second welding part is electrically connected with the magnetron cathode lead input terminal, and the magnetron cathode lead input terminal is characterized in that: the first welding part and the second welding part are of an open cavity structure, the feedthrough capacitor output terminal and the cathode lead input terminal are arranged in the open cavity structure, and two ends of the choke coil are respectively electrically connected with the feedthrough capacitor output terminal and the cathode lead input terminal through the open cavity structure.
Preferably, the open cavity structure is an open sleeve structure and is used for rapidly and fixedly arranging a feedthrough capacitor output terminal and a cathode lead input terminal of the open cavity so as to complete the assembly of the choke coil, the feedthrough capacitor output terminal and the cathode lead input terminal.
Preferably, the open sleeve structure is a funnel-shaped or cylindrical or spiral cavity structure.
Preferably, a notch is formed in the side surface of the open cavity structure shaft, and the feedthrough capacitor output terminal and the cathode lead input terminal can be pressed into the cavity through the notch.
Preferably, the open cavity structure body has a relaxation degree, and the inner diameter of the open cavity structure is not greater than the outer diameters of the feedthrough capacitor output terminal and the cathode lead input terminal, so that the open cavity structure body is kept in a holding state after the feedthrough capacitor output terminal and the cathode lead input terminal are pressed into the cavity.
Preferably, the open cavity structure is provided with a clamping mechanism.
Preferably, the clamping mechanism is an elastic sheet arranged along the inner wall of the open cavity and used for clamping the feedthrough capacitor output terminal and the cathode lead input terminal.
Preferably, the open cavity structure is provided with a solder layer.
The invention also provides a choke coil, which comprises a choke coil body, wherein welding parts of the open cavity structures are arranged at two ends of the choke coil, the open cavity structures are used for fixing parts placed in the cavities, and the choke coil is electrically connected with the parts through the open cavity structures.
Preferably, the open cavity structure is an open sleeve structure.
Preferably, the open sleeve structure is provided with a layer of solder.
The invention has the beneficial effects that:
according to the filtering component of the magnetron, the welding parts at the two ends of the choke coil are provided with the cavity structures, when the choke coil and the corresponding input and output ends are assembled or welded, the corresponding input and output terminals are directly placed or inserted into the cavities at the two ends of the corresponding choke coil, and the automatic clamping of the welding part is realized through the fixing or clamping function of the cavity structures, so that the relative rotation or deviation between the welding part of the choke coil and the corresponding input and output terminals can not occur, the welding part can be further welded subsequently, a clamp is not required to be additionally used for positioning during welding, the convenience of the assembling and welding process is increased, the use of a magnetron machining and positioning tool is reduced, and the production efficiency, the yield and the quality of products of the filtering component and the magnetron are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a magnetron according to the present invention;
FIG. 2 is a schematic diagram of a filter assembly according to the present invention;
FIG. 3 is a schematic view of a choke coil configuration according to the present invention;
FIG. 4 is a schematic view of a choke coil according to an embodiment of the present invention;
FIG. 5 is a schematic view of an open sleeve according to an embodiment of the present invention;
FIG. 6 is a schematic view of a choke coil according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third choke coil according to an embodiment of the invention.
Reference numerals: choke coil 1, first welding part 1-1, second welding part 1-2, magnetic core 2, feedthrough capacitor 3, cathode lead 4, notch 5, clamping structure 6.
Detailed Description
Example (b):
the embodiments of the present invention will be described in detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely a part of the embodiments of the invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 7, a filter assembly of a magnetron comprises a choke coil 1, a magnetic core 2 and a feedthrough capacitor 3, wherein the choke coil 1 surrounds the magnetic core 2, and welding parts are arranged at two ends of the choke coil 1 and are a first welding part 1-1 and a second welding part 1-2; the first welding part 1-1 is electrically connected with the feedthrough capacitor output terminal 3, the second welding part is electrically connected with a magnetron cathode lead input terminal 4, and the magnetron cathode lead welding device is characterized in that: the first welding part 1-1 and the second welding part 1-2 are of an open cavity structure, and the feedthrough capacitor output terminal and the cathode lead input terminal are arranged in the open cavity structure.
The invention also provides a choke coil, which comprises a choke coil body 1 and a choke coil body 1, wherein welding parts of an open cavity structure are arranged at two ends of the choke coil body 1, namely a first welding part 1-1 and a second welding part 1-2 respectively, the open cavity structure is used for fixing a part placed in the cavity, and the choke coil is electrically connected with the part through the open cavity structure.
The filter group of the magnetron of the invention designs the choking coil with the function of automatically fixing or clamping the structure, and no clamp is additionally used for positioning during welding. The convenience of assembly and welding processes is improved, the use of magnetron machining and positioning tools is reduced, and the production efficiency of the filter assembly and the magnetron and the yield and quality of products are improved.
Example 1
As shown in fig. 1 to 5, the choke coil 1 has two ends provided with welding portions, which are a first welding portion 1-1 and a second welding portion 1-2, respectively, the welding portion is in an open cavity structure, specifically, an open sleeve structure, the material of the open sleeve structure has a certain relaxation degree, and the inner diameter of the open sleeve structure is not larger than the outer diameter of the output terminal connection of the feedthrough capacitor 3 and the cathode lead input terminal 4, so that the open sleeve structure can accommodate the output terminal connection of the feedthrough capacitor 3 and the cathode lead input terminal 4, after the output terminal connection of the feedthrough capacitor 3 and the cathode lead input terminal 4 are inserted into the sleeves of the first welding portion 1-1 and the second welding portion 1-2, the sleeves maintain a tightly-held state, and can fix the output terminal connection of the feedthrough capacitor 3 and the cathode lead input terminal 4. In the scheme, the open sleeve structure can be designed into a funnel shape, or a cylindrical shape, or a spiral cavity structure, and the input and output terminals can be rapidly inserted into the sleeve. When the assembly welding is carried out, the output terminal connection of the feedthrough capacitor 3 and the cathode lead input terminal 4 are directly inserted into the corresponding open sleeve, the sleeve accommodates and wraps the output terminal connection and the cathode lead input terminal 4 of the fixed feedthrough capacitor 3, the material of the sleeve structure body is the same as that of the choke coil body, or the sleeve structure body is made of a conductive material, and when the sleeve accommodates and wraps the output terminal connection and the cathode lead input terminal 4 of the feedthrough capacitor 3, the sleeve is electrically connected with the cathode lead input terminal. And the fixing clamp of each part in the assembling and welding process is reduced. Meanwhile, considering the welding and fixing effects, the sleeve structure can be prefabricated with welding flux, and after the output terminal connection of the feedthrough capacitor 3 and the preliminary assembly of the cathode lead input terminal 4 and the choke coil welding part are completed, the sleeve structure is rapidly heated, so that the welding can be completed, and the convenience of the assembly and welding processes is improved. The production efficiency of the filter assembly and the magnetron and the product yield and quality are improved.
Example 2
As shown in fig. 6, in addition to embodiment 1, the first welding portion 1-1 and the second welding portion 1-2 at both ends of the choke coil 1 are designed to be an open sleeve structure having a notch 5 on the axial side, and when in use, the feedthrough capacitor output terminal 3 and the cathode lead input terminal 4 can be pressed into the open sleeve structure from the notch 5. When making open sleeve, sleeve body material is the same with choke coil 1 body material, perhaps is conducting material, the open sleeve structure of first welding part 1-1 and second welding part 1-2 of design is thin slice breach cylinder structure, make cavity structure body have certain relaxation degree, when punching electric capacity output terminal, the cavity is impressed to the negative pole lead wire input terminal, open sleeve structure expands, after impressing, open sleeve structure keeps the state of hugging closely, compress tightly the parcel and live punching electric capacity output terminal 3 and negative pole lead wire input terminal 4, realize that choke coil 1 is connected with the output terminal of punching electric capacity 3 and the electricity of negative pole lead wire input terminal 4 is connected. Meanwhile, the open sleeve structure can be used for prefabricating welding flux, so that subsequent welding requirements are facilitated. The specific process selection can be flexibly adjusted according to actual use. The method is beneficial to simplifying the assembly flow and improving the accuracy and efficiency of assembly.
Example 3
As shown in fig. 7, in addition to embodiments 1 and 2, further, a clamping structure 6 is disposed in the open sleeve structure of the first welding part 1-1 and the second welding part 1-2, when the feedthrough capacitor output terminal 3 and the cathode lead input terminal 4 are pressed into the cavity, the corresponding feedthrough capacitor output terminal 3 and the corresponding cathode lead input terminal 4 are pressed into the corresponding clamping structure 6, the feedthrough capacitor output terminal 3 and the cathode lead input terminal 4 are clamped by the clamping structure 5, the material of the clamping structure 6, the open sleeve structure body and the choke coil body are all conductive materials, and the electrical connection of the choke coil 1 is completed after the feedthrough capacitor output terminal 3 and the cathode lead input terminal 4 are pressed and clamped. In the scheme, an elastic sheet 6 with clamping force can be arranged along the inner wall of the cavity of the open sleeve, and the elastic sheet 6 is provided with a channel corresponding to the gap of the cavity and can be pressed into the feed-through capacitor output terminal 3 and the cathode lead input terminal 4. In addition, the clamping structure can be set to be an independent structure with clamping force and distributed in the cavity of the open sleeve, and the through capacitor output terminal 3 and the cathode lead input terminal 4 which are correspondingly pressed into the cavity of the open sleeve can be clamped tightly. Meanwhile, the cavity structure can be prefabricated with solder, so that subsequent welding requirements are facilitated. The specific process selection can be flexibly adjusted according to actual use. The method is beneficial to simplifying the assembly flow and improving the accuracy and efficiency of assembly.
The invention also provides a choke coil structure which can be used as an independent device or component. The choke coil comprises a choke coil body 1, welding parts of an open cavity structure are arranged at two ends of the choke coil, the open cavity structure is used for fixing a component placed in a cavity, and the choke coil is electrically connected with the component through the open cavity structure.
As shown in fig. 4 to 7, the first welding portion 1-1 and the second welding portion 1-2 at two ends of the choke coil are designed to have a cavity structure for accommodating and wrapping an external welding component, when the choke coil is welded with the external component, the cavity structures at two ends can be quickly positioned and fixed, for example, the cavity sleeve structure can directly place the external component into the sleeve, so that the positioning and the assembly are completed, and the efficiency is high. Simultaneously, on preliminary location and fixed basis, the structure that further design has automatic chucking function, if, set up the cavity body into the thin slice breach cylinder that has certain relaxation degree, perhaps set up the chucking structure in the cavity, when using, can directly realize the electricity with external parts chucking and be connected, need not to weld again. In addition, in order to meet the requirements of different processes, the cavity structure can contain prefabricated welding flux, after fastening is completed, heating is directly performed, and the prefabricated welding flux is melted to complete welding. Choke coil in the scheme can adapt to different technology demands, compares traditional choke coil and need help of the supplementary welded technology of fixing device such as anchor clamps or mould at the equipment welding in-process, and this structure more does benefit to optimization technology, raises the efficiency, and because of optimizing technology, and reduce the harmful effects that process error brought the product simultaneously, the overall improvement product quality.
The first welding part 1-1, the second welding part 1-2 and the clamping structure 6 provided at both ends of the choke coil of the present invention are not limited to the above-described embodiments, but it is considered that the cavity structure can perform the fixing or clamping function correspondingly, and all of them are the protection scheme of the present invention.
The foregoing is illustrative of the preferred embodiments of the present invention only and is not to be construed as limiting the claims. The invention is not limited to the above embodiments, the specific construction of which allows variations, and in any case variations, which are within the scope of the invention as defined in the independent claims.
Claims (10)
1. A filter assembly of a magnetron comprises a through capacitor, a magnetic core and a choke coil, wherein the choke coil surrounds the magnetic core, and welding parts are arranged at two ends of the choke coil and are a first welding part and a second welding part; the first welding part is electrically connected with the feedthrough capacitor output terminal, the second welding part is electrically connected with the magnetron cathode lead input terminal, and the magnetron cathode lead input terminal is characterized in that: the first welding part and the second welding part are of an open cavity structure, and the feedthrough capacitor output terminal and the cathode lead input terminal are arranged in the open cavity structure.
2. The filtering assembly of a magnetron of claim 1, wherein: the open cavity structure is an open sleeve structure.
3. The filtering assembly of a magnetron of claim 2, wherein: the open sleeve structure is a funnel-shaped or cylindrical or spiral cavity structure.
4. The filtering assembly of a magnetron of claim 2, wherein: and a notch for pressing the feed-through capacitor output terminal and the cathode lead input terminal into the cavity is formed in the side surface of the open cavity structure shaft.
5. The filtering assembly of a magnetron of claim 4, wherein: the inner diameter of the open cavity structure is not larger than the outer diameters of the feedthrough capacitor output terminal and the cathode lead input terminal, so that the open cavity structure keeps a holding state after the feedthrough capacitor output terminal and the cathode lead input terminal are pressed into the cavity.
6. The filtering assembly of a magnetron of claim 4, wherein: the open cavity structure is provided with a clamping structure.
7. The filtering assembly of a magnetron of claim 6, wherein: the clamping mechanism is an elastic sheet arranged along the inner wall of the open cavity and used for clamping the feed-through capacitor output terminal and the cathode lead input terminal.
8. A filtering assembly of a magnetron according to any of claims 2 to 7, characterized in that: the open cavity structure is provided with solder.
9. A choke coil, includes the choke coil body, the choke coil both ends are equipped with the welding part of open cavity structure, open cavity structure is arranged in the fixed part of putting into the cavity, choke coil pass through open cavity structure with the part electricity is connected.
10. A choke coil in accordance with claim 9, wherein: the open cavity structure is an open sleeve structure, and the open sleeve structure is provided with solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157421.1A CN113871276A (en) | 2021-09-29 | 2021-09-29 | Filtering assembly of magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157421.1A CN113871276A (en) | 2021-09-29 | 2021-09-29 | Filtering assembly of magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113871276A true CN113871276A (en) | 2021-12-31 |
Family
ID=79000855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111157421.1A Pending CN113871276A (en) | 2021-09-29 | 2021-09-29 | Filtering assembly of magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113871276A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027021A (en) * | 2005-07-21 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Magnetron |
| JP2009105290A (en) * | 2007-10-24 | 2009-05-14 | Wacom Co Ltd | Variable capacitor, position indicator, and coordinate input device |
| CN103715042A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube and microwave-using apparatus |
| CN103715043A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube and microwave-using apparatus |
| CN113284778A (en) * | 2021-05-11 | 2021-08-20 | 中山市美格电子科技有限公司 | High-efficiency magnetron |
| CN217214624U (en) * | 2021-09-29 | 2022-08-16 | 中山市美格电子科技有限公司 | Filtering component of magnetron |
-
2021
- 2021-09-29 CN CN202111157421.1A patent/CN113871276A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027021A (en) * | 2005-07-21 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Magnetron |
| JP2009105290A (en) * | 2007-10-24 | 2009-05-14 | Wacom Co Ltd | Variable capacitor, position indicator, and coordinate input device |
| CN103715042A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube and microwave-using apparatus |
| CN103715043A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube and microwave-using apparatus |
| CN113284778A (en) * | 2021-05-11 | 2021-08-20 | 中山市美格电子科技有限公司 | High-efficiency magnetron |
| CN217214624U (en) * | 2021-09-29 | 2022-08-16 | 中山市美格电子科技有限公司 | Filtering component of magnetron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217214624U (en) | Filtering component of magnetron | |
| US4878291A (en) | Method of manufacturing toroidal coils | |
| CN1736646A (en) | Bonder welding and its chucking method | |
| US4785527A (en) | Method for manufacturing an inductive chip | |
| CN113871276A (en) | Filtering assembly of magnetron | |
| JPH07120502B2 (en) | Method for manufacturing magnetron anode assembly | |
| JPH09261905A (en) | Armature | |
| EP0585786B1 (en) | Process for preparing a flyback transformer | |
| US20070271771A1 (en) | Apparatus for Producing an Inductor | |
| GB2264822A (en) | Connecting method and structure of superconducting wires | |
| CN109660035A (en) | The manufacturing method of motor, block stator and block stator | |
| US4169987A (en) | Magnetron tubes cathode support | |
| CN212917962U (en) | Positioning tool for nested radiation unit | |
| US20040100157A1 (en) | Electric machine end turn connectors | |
| CN207642566U (en) | A kind of weld mold for anode decoupling column | |
| US4481709A (en) | Method of making a coil assembly for hot melt induction heater apparatus | |
| US4823460A (en) | Method of manufacturing an electromagnetic deflection unit | |
| US6011233A (en) | Welding method of a connection terminal piece for a deflection yoke coil and the structure thereof | |
| CN113162295B (en) | DC brush motor | |
| CN215091318U (en) | Magnetic collector for electromagnetic pulse forming and forming device | |
| CN208174377U (en) | A kind of DC motor stator and direct current generator | |
| US3215886A (en) | Double-ended high frequency electron tube | |
| TWI668941B (en) | Method for manufacturing stator of brushless motor and stator of brushless motor | |
| US3002134A (en) | Electrical translator device and method of manufacture | |
| CN109586476A (en) | The manufacturing method of motor and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |