CN109068475B - PCB layout structure for cylindrical motor - Google Patents
PCB layout structure for cylindrical motor Download PDFInfo
- Publication number
- CN109068475B CN109068475B CN201811045916.3A CN201811045916A CN109068475B CN 109068475 B CN109068475 B CN 109068475B CN 201811045916 A CN201811045916 A CN 201811045916A CN 109068475 B CN109068475 B CN 109068475B
- Authority
- CN
- China
- Prior art keywords
- pcb
- motor
- edge
- layout structure
- motor lead
- 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.)
- Active
Links
- 238000009434 installation Methods 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 6
- MINPZZUPSSVGJN-UHFFFAOYSA-N 1,1,1,4,4,4-hexachlorobutane Chemical compound ClC(Cl)(Cl)CCC(Cl)(Cl)Cl MINPZZUPSSVGJN-UHFFFAOYSA-N 0.000 description 13
- 101150049492 DVR gene Proteins 0.000 description 13
- 239000000306 component Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a PCB layout structure for a cylindrical motor, which comprises a shell, a rotating shaft and a PCB, wherein a wiring port is arranged on the shell, a mounting step is arranged in the shell, the PCB is fixed on the mounting step, a yielding hole is formed in the PCB corresponding to the rotating shaft, the PCB comprises an upper side, a lower side, a left side and a right side which are oppositely positioned around the yielding hole, the upper side is a non-technical straight side, the inner shape of the left side and the right side corresponding to the shell is arc-shaped, three motor lead points are distributed on the left side and correspond to and are connected with three motor lead wires, a positioning fixed point is arranged on the right side, the PCB is fixed on the mounting step through the three motor lead points and the positioning fixed point, a power module is arranged on the PCB, the power module is arranged close to the three motor lead points, and at least one half of the area of the power module is positioned in an area surrounded by the positioning fixed point and the three motor lead points. The PCB layout structure reduces the PCB area to the greatest extent and reduces the cost.
Description
Technical Field
The invention relates to the field of circuit board design, in particular to a PCB layout structure for a cylindrical motor.
Background
As shown in fig. 2, a motor housing is commonly used in motors such as air conditioning fans, air purifiers, electric fans, etc., a central rotating shaft 12 is provided in the motor housing 1, a wiring port 14 is provided on a housing 11, and a PCB can only pass through the rotating shaft due to the limitation of the inner space of the housing 11, so that a mounting step 13 for fixing the PCB is provided in the housing 11, and in particular, the mounting step 13 is designed as a ring shape broken at the wiring port according to its own structure. Aiming at the motor shell, a full-round PCB is adopted at present, the mounting effect is ensured by fixing a plurality of parts at the edge, and then various components are scattered on the PCB. This structure has the following drawbacks: 1) The round PCB board causes great waste and increases cost when being mass-produced into jointed boards; 2) The plurality of fixing points bring great trouble to installation; 3) Each component on the PCB is distributed and dispersed, space is not reasonably utilized, and electromagnetic interference is strong.
Therefore, it is desirable to reduce the size of the PCB, ensure the mounting reliability thereof, and further optimize the layout of the components, thereby satisfying the use requirements and reducing the cost.
Disclosure of Invention
The invention aims to provide a PCB layout structure for a cylindrical motor, which eliminates the conventional whole round shape, ensures the original stability and functionality and achieves the aim of reducing the cost.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a PCB layout structure for tubular motor, it includes casing, pivot and PCB, be provided with the wiring mouth on the casing, the inside of casing is provided with the installation step, the PCB is fixed in on the installation step, and the hole of stepping down has been seted up to corresponding pivot on the PCB, the PCB is including being located the hole of stepping down relatively on four sides, the lower side, left side and right, the upper side is the straight flange of non-technology, the inside shape that left side, right side corresponds the casing sets up to the arc, the left side distributes and has three motor lead point, correspond to connect motor three-phase lead, be provided with a location fixed point on the right side, be fixed in on the installation step through three motor lead point and location fixed point PCB, be provided with power module on the PCB, power module is close to three motor lead point setting, and its area of at least half is located the area that location fixed point encloses with three motor lead point.
The three motor lead points are sequentially divided into a U-phase point, a V-phase point and a W-phase point according to the upper position and the lower position, and a straight line where the positioning fixed point and the V-phase point are located passes through the abdicating hole.
The straight line where the positioning fixed point and the V-phase point are located passes through the power module.
The pin-thinning side of the power module is close to three motor lead points, and the pin-closing side of the power module is close to the abdicating hole.
Wherein, three motor lead points and location fixed point adopt the bonding pad form and install the step welding.
Wherein the lower edge is also a non-technical straight edge. The non-process straight edge simplifies the production process, and the plate is convenient to make and effectively utilized during mass production.
Wherein, the lower edge is provided with a plurality of binding posts near the wiring mouth.
Wherein, be provided with control circuit module between hole and the right of stepping down, be provided with switching power supply module between hole and the binding post of stepping down. The layout is symmetrical, and the emphasis is avoided.
And a filter capacitor is arranged on one side of the power module, which is close to the switching power supply module. The filter capacitor is placed close to the power module, and the filter effect is good.
In summary, compared with the prior art, the PCB layout structure for the cylindrical motor has the advantages that from the perspective of reducing the area of a PCB, the fixed points of the PCB and the components on the fixed points are reasonably laid out, and the size of the PCB is reduced to the greatest extent and the integration level is improved on the premise of ensuring the installation reliability, the heat dissipation performance of the components, the electromagnetic interference resistance and the like, so that the aim of reducing the cost is fulfilled.
Drawings
Fig. 1 is a layout diagram of a PCB layout structure for a cylindrical motor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a motor housing for a PCB layout structure of a cylindrical motor according to an embodiment of the present invention.
In the figure:
1-a motor housing; 11-a housing; 12-rotating shaft; 13-mounting steps; 14-wiring ports; 2-PCB; 21-a relief hole; 22-upper edge; 23-lower side; 24-left; 25-right; 26-motor lead points; 27-positioning a fixed point; a 3-power module; 4-a control circuit module; 5-a switching power supply module; 6-a filter capacitor; 7-connection terminals.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a PCB layout structure for a cylindrical motor, which is mainly directed to a cylindrical motor housing 1, including a casing 11, a rotating shaft 12, and a PCB2.
The pivot 12 is located the center of casing 11, and the inside of casing 11 is provided with mounting step 13, and PCB2 is fixed in on the mounting step 13, and pivot 12 passes PCB2, and PCB2 is last to correspond pivot 12 and to have seted up the hole 21 of stepping down, is provided with wiring mouth 14 on the casing 11.
The PCB2 includes an upper side 22, a lower side 23, a left side 24 and a right side 25 which are relatively located around the relief hole 21, the left side 24 and the right side 25 are arranged in an arc shape corresponding to the internal shape of the housing 11, and the upper side 22 and even the lower side 23 are arranged in a non-technical straight side. The existing PCB is designed to be round aiming at the shape of the cylindrical shell 11, and a square plate is needed to be used for makeup when the makeup is produced in a mass mode, so that the plate is extremely wasted, and a circle of round edges are processed. In this embodiment, the upper edge 22 and the lower edge 23 are made into straight edges, so that the jointed boards are convenient, the boards are fully utilized, the straight edges do not need to be processed, the working procedures are reduced, and the production cost is reduced.
Three motor lead points 26 are distributed on the left side 24 and correspondingly connected with three-phase leads of a motor, the three-phase leads are sequentially divided into a U-phase point, a V-phase point and a W-phase point according to the upper position and the lower position, a positioning fixed point 27 is arranged on the right side 25, the PCB2 is fixed on the mounting step 13 through the three motor lead points 26 and the positioning fixed point 27, and particularly, the three motor lead points 26 and the positioning fixed point 27 are welded with the mounting step 13 in a bonding pad mode, particularly a single-sided bonding pad, so that the PCB2 is convenient to detach.
It should be noted that, in this embodiment, the mounting step 13 of the housing 11 is designed to be broken, and the broken portion limits the mounting position, and increases the risk of rollover of the PCB2, so that the PCB2 is reliably fixed with the least number of fixing points. Since the motor lead welding points are required to be arranged on the PCB2, it is considered to integrate the three lead welding points with the fixing points, namely, the three motor lead points 26, so that the original three fixing points are omitted. The positioning fixing point 27 of the right 25 plays a main fixing and positioning role, and since the right 25 has only one fixing point, the position of the positioning fixing point 27 is quite elegant, otherwise side turning is easy to be caused, preferably, the straight line where the positioning fixing point 27 and the V-phase point are located passes through the center of the yielding hole 21, so that two sides of the yielding hole 21 can be ensured to be symmetrically fixed, and the stability is higher.
It should be noted that, according to the above-mentioned positional relationship of the four fixed points, it can be determined that the upper edge 22 is located above the center line of the relief hole 21, and if the upper edge exceeds the top of the relief hole 21, the design is designed according to actual needs.
The PCB2 is provided with a power module 3, a control circuit module 4, a switching power supply module 5 and a filter capacitor 6, and the components are arranged on the front surface of the PCB2, namely on one side of the plug-in surface. The power module 3 is a core component, and needs to ensure a heat dissipation effect, which is influenced by the fact that the power module 3 is close to the three motor lead points 26 in this embodiment, and at least one half of the area of the power module is located in an area surrounded by the positioning fixing point 27 and the three motor lead points 26, particularly, the power module 3 is also located on a straight line where the positioning fixing point 27 and the V-phase point are located, so that the overall stability of the PCB2 is guaranteed to the greatest extent. The pin-free side of the power module 3 is close to the three motor lead points 26, and the pin-close side is close to the abdicating hole 21, so that the wiring distance can be reduced, and the electromagnetic interference can be reduced.
A plurality of wiring terminals 7 are arranged on the lower edge 23 and close to the wiring port 14, the switching power supply module 5 is positioned above the wiring terminals 7, the control circuit module 4 is positioned on the right side of the switching power supply module 5, and the filter capacitor 6 is positioned on one side of the power module 3 close to the switching power supply module 5. The modules are arranged in such a way, so that the layout is symmetrical, the phenomenon that one side gathers more and one side is arranged less and is emphasized is avoided, the filter effect is good, the electromagnetic interference resistance is good, and the external interference is small.
It can be seen that the PCB layout structure has at least the following advantages:
1) The PCB area is reduced, and the material cost is saved;
2) The straight edge is convenient to make a jointed board, and workpiece treatment is not needed, so that the processing cost is saved;
3) The PCB fixing points are few, so that the processing operation is reduced;
4) The PCB fixing point is reasonable in design and reliable in fixing;
5) The layout of each component on the PCB is compact and uniform, and the position selection of connecting wires is reasonable;
6) Reliable installation can be ensured for the installation step with the break;
7) The heat dissipation effect, the filtering effect and the electromagnetic interference resistance are excellent.
In summary, the above-mentioned PCB layout structure for tubular motor has carried out reasonable overall arrangement to the fixed point position of PCB and above components and parts from the angle of reducing the PCB board area, under the prerequisite of guaranteeing installation reliability, components and parts thermal diffusivity, anti-electromagnetic interference nature etc., reduces the PCB size to the maximum extent, improves the integrated level to reach the purpose of reduce cost.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above examples, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A PCB layout structure for a cylindrical motor comprises a shell, a rotating shaft and a PCB, wherein a wiring port is arranged on the shell, an installation step is arranged in the shell, the PCB is fixed on the installation step, a yielding hole is formed on the PCB corresponding to the rotating shaft,
the PCB comprises an upper edge, a lower edge, a left edge and a right edge which are relatively positioned around the abdication hole, wherein the upper edge is a non-technical straight edge, the left edge and the right edge are arranged in an arc shape corresponding to the inner shape of the shell, three motor lead points are distributed on the left edge and are correspondingly connected with three-phase leads of a motor, a positioning fixed point is arranged on the right edge, the PCB is fixed on the mounting step through the three motor lead points and the positioning fixed point, a power module is arranged on the PCB and is close to the three motor lead points, at least one half of the area of the power module is positioned in an area surrounded by the positioning fixed point and the three motor lead points,
the three motor lead points are sequentially divided into a U-phase point, a V-phase point and a W-phase point according to the upper and lower positions, the straight line where the positioning fixed point and the V-phase point are positioned passes through the abdicating hole,
the straight line where the positioning fixed point and the V-phase point are located passes through the power module,
and the pin-free side of the power module is close to the three motor lead points, and the pin-close side is close to the abdicating hole.
2. The PCB layout structure for a can-type motor of claim 1, wherein: and the three motor lead points and the positioning fixing point are welded with the mounting step in a bonding pad mode.
3. The PCB layout structure for a can-type motor of claim 1, wherein: the lower edge is also a non-technical straight edge.
4. The PCB layout structure for a can-type motor of claim 1, wherein: and a plurality of wiring terminals are arranged on the lower edge close to the wiring port.
5. The PCB layout structure for a can motor of claim 4, wherein: and a control circuit module is arranged between the yielding hole and the right side, and a switching power supply module is arranged between the yielding hole and the wiring terminal.
6. The PCB layout structure for a can motor of claim 5, wherein: and a filter capacitor is arranged on one side of the power module, which is close to the switching power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811045916.3A CN109068475B (en) | 2018-09-07 | 2018-09-07 | PCB layout structure for cylindrical motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811045916.3A CN109068475B (en) | 2018-09-07 | 2018-09-07 | PCB layout structure for cylindrical motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109068475A CN109068475A (en) | 2018-12-21 |
| CN109068475B true CN109068475B (en) | 2023-11-10 |
Family
ID=64760838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811045916.3A Active CN109068475B (en) | 2018-09-07 | 2018-09-07 | PCB layout structure for cylindrical motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109068475B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529668A (en) * | 1976-03-08 | 1978-10-25 | Amp Inc | Electrical connector and method of manufacture thereof |
| US4546280A (en) * | 1983-01-08 | 1985-10-08 | Robert Bosch Gmbh | Alternator with unitary brush-holder and bearing hub |
| DE29507456U1 (en) * | 1995-05-04 | 1995-06-29 | Siemens AG, 80333 München | Device for controlling three-phase motors |
| CA2372440A1 (en) * | 1999-06-03 | 2000-12-14 | Nobuyuki Kasuga | Power feed and heat dissipating device for power semiconductor devices |
| CN101767328A (en) * | 2008-12-26 | 2010-07-07 | 株式会社牧田 | Electric tool |
| CN201739202U (en) * | 2010-07-09 | 2011-02-09 | 卧龙电气集团股份有限公司 | Improved blower with outer rotor |
| CN202513803U (en) * | 2012-04-16 | 2012-10-31 | 卧龙电气集团股份有限公司 | Motor rotor positioning system for nursing equipment |
| CN203645481U (en) * | 2013-12-31 | 2014-06-11 | 卧龙电气集团股份有限公司 | A PCB board structure of a brushless DC motor control board |
| CN103855847A (en) * | 2012-11-30 | 2014-06-11 | 中山大洋电机股份有限公司 | Motor lead-wire fixing clamp assembly and the applied motor thereof |
| CN203660852U (en) * | 2013-11-29 | 2014-06-18 | 广东威灵电机制造有限公司 | Stator assembly, plastic-packaging housing thereof, and plastic-packaged motor with stator assembly |
| CN203911621U (en) * | 2014-05-27 | 2014-10-29 | 浙江省东阳市诚基电机有限公司 | PCB structure of micro vibration motor |
| CN105392320A (en) * | 2015-12-15 | 2016-03-09 | 深圳南方德尔汽车电子有限公司 | Controller |
| CN105813921A (en) * | 2013-12-13 | 2016-07-27 | 日本精工株式会社 | Electronic control unit, electric power steering device, and vehicle |
| JP2018113787A (en) * | 2017-01-12 | 2018-07-19 | 三菱電機株式会社 | Rotary electric machine, manufacturing method of rotary electric machine, and exhaust fan |
| CN207719183U (en) * | 2017-12-22 | 2018-08-10 | 英迪迈智能驱动技术无锡股份有限公司 | The radiator structure of rectifier bridge on a kind of wiring board |
| CN209134679U (en) * | 2018-09-07 | 2019-07-19 | 英迪迈智能驱动技术无锡股份有限公司 | A kind of PCB layout structure for tubular motor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBO20110413A1 (en) * | 2011-07-11 | 2013-01-12 | Spal Automotive Srl | ROTARY ELECTRIC MACHINE AND RELATIVE ASSEMBLY METHOD. |
| GB2517326B (en) * | 2012-06-08 | 2020-04-29 | Mitsubishi Electric Corp | Motor incorporating power converter, and air conditioner, water heater, and ventilation blower incorporating the motor |
| JP6399602B2 (en) * | 2015-03-23 | 2018-10-03 | 三菱重工サーマルシステムズ株式会社 | Circuit board for power conversion and electric compressor |
| US10257920B2 (en) * | 2015-05-29 | 2019-04-09 | Shindengen Electric Manufacturing Co., Ltd. | Semiconductor device |
| JP2017017975A (en) * | 2015-06-30 | 2017-01-19 | 株式会社豊田自動織機 | Electric compressor |
| CN108206598B (en) * | 2016-12-16 | 2021-01-05 | 德昌电机(深圳)有限公司 | Motor device and stator thereof |
| JP6726631B2 (en) * | 2017-02-08 | 2020-07-22 | 株式会社ケーヒン | Blower motor unit for air conditioning |
-
2018
- 2018-09-07 CN CN201811045916.3A patent/CN109068475B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529668A (en) * | 1976-03-08 | 1978-10-25 | Amp Inc | Electrical connector and method of manufacture thereof |
| US4546280A (en) * | 1983-01-08 | 1985-10-08 | Robert Bosch Gmbh | Alternator with unitary brush-holder and bearing hub |
| DE29507456U1 (en) * | 1995-05-04 | 1995-06-29 | Siemens AG, 80333 München | Device for controlling three-phase motors |
| CA2372440A1 (en) * | 1999-06-03 | 2000-12-14 | Nobuyuki Kasuga | Power feed and heat dissipating device for power semiconductor devices |
| CN101767328A (en) * | 2008-12-26 | 2010-07-07 | 株式会社牧田 | Electric tool |
| CN201739202U (en) * | 2010-07-09 | 2011-02-09 | 卧龙电气集团股份有限公司 | Improved blower with outer rotor |
| CN202513803U (en) * | 2012-04-16 | 2012-10-31 | 卧龙电气集团股份有限公司 | Motor rotor positioning system for nursing equipment |
| CN103855847A (en) * | 2012-11-30 | 2014-06-11 | 中山大洋电机股份有限公司 | Motor lead-wire fixing clamp assembly and the applied motor thereof |
| CN203660852U (en) * | 2013-11-29 | 2014-06-18 | 广东威灵电机制造有限公司 | Stator assembly, plastic-packaging housing thereof, and plastic-packaged motor with stator assembly |
| CN105813921A (en) * | 2013-12-13 | 2016-07-27 | 日本精工株式会社 | Electronic control unit, electric power steering device, and vehicle |
| CN203645481U (en) * | 2013-12-31 | 2014-06-11 | 卧龙电气集团股份有限公司 | A PCB board structure of a brushless DC motor control board |
| CN203911621U (en) * | 2014-05-27 | 2014-10-29 | 浙江省东阳市诚基电机有限公司 | PCB structure of micro vibration motor |
| CN105392320A (en) * | 2015-12-15 | 2016-03-09 | 深圳南方德尔汽车电子有限公司 | Controller |
| JP2018113787A (en) * | 2017-01-12 | 2018-07-19 | 三菱電機株式会社 | Rotary electric machine, manufacturing method of rotary electric machine, and exhaust fan |
| CN207719183U (en) * | 2017-12-22 | 2018-08-10 | 英迪迈智能驱动技术无锡股份有限公司 | The radiator structure of rectifier bridge on a kind of wiring board |
| CN209134679U (en) * | 2018-09-07 | 2019-07-19 | 英迪迈智能驱动技术无锡股份有限公司 | A kind of PCB layout structure for tubular motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109068475A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09284078A (en) | Terminal noise filter | |
| CN114499156A (en) | An integrated electromagnetic interference filter | |
| CN206657736U (en) | One kind stacking power busbar filter capacitor component | |
| CN109068475B (en) | PCB layout structure for cylindrical motor | |
| CN106255374A (en) | A kind of controller for electric vehicle | |
| CN203882997U (en) | Circuit structure capable enabling occupied space reduction of external capacitor of chip | |
| CN109005639B (en) | PCB layout structure for cylindrical motor | |
| CN201608627U (en) | Universal frequency converter | |
| CN206685996U (en) | A kind of motor stator winding connection structure | |
| CN109005638B (en) | PCB layout structure for cylindrical motor | |
| EP3734813B1 (en) | Electric pump | |
| JP6699641B2 (en) | Electric component box and method of manufacturing electric circuit | |
| CN203243187U (en) | Printed circuit board and direct current motor | |
| CN209134679U (en) | A kind of PCB layout structure for tubular motor | |
| CN216185445U (en) | Redundant electric power steering device | |
| CN110611436A (en) | Rectification inversion module and frequency converter | |
| CN214411782U (en) | Switch control electric appliance box | |
| CN208489389U (en) | The circuit connection structure of vehicle control device | |
| CN205081714U (en) | Thick film mixes integrated brushless DC motor drive circuit | |
| CN209659102U (en) | An integrated drive motor | |
| CN217824704U (en) | Novel filtering device for high-efficiency purification of power supply | |
| CN110171469B (en) | Connector assembly and electric power steering controller | |
| CN216981798U (en) | Integrated module machine | |
| CN223436966U (en) | Steering motor for vehicle and vehicle | |
| CN219352179U (en) | Enclosed high-current power supply filter with efficient heat dissipation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |