CN208874455U - A kind of hollow shaft brshless DC motor - Google Patents
A kind of hollow shaft brshless DC motor Download PDFInfo
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- CN208874455U CN208874455U CN201821785171.XU CN201821785171U CN208874455U CN 208874455 U CN208874455 U CN 208874455U CN 201821785171 U CN201821785171 U CN 201821785171U CN 208874455 U CN208874455 U CN 208874455U
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Abstract
The utility model relates to a kind of hollow shaft brshless DC motors, the motor includes magnet, coil and stator core, the motor further includes cylinder, described cylinder one end has extended to form rotor endcap inwardly, it is formed in the middle part of the rotor endcap hollow, the hollow edge has extended to form sky spindle body to the direction perpendicular to the rotor endcap, the hollow axis body is parallel to each other with the cylinder, it is formed between hollow axis body and cylinder and accommodates the magnet, the space of coil and stator core, the cylinder, the servo-electric motor hollow shafting rotor shell of structural integrity is formed between rotor endcap and hollow axis body, the motor support base includes block end, the block end extends to form nesting part inwardly, support portion is formed on the nesting part, it is shelved on the support portion on the inside of the stator core.The utility model improves the precision of part, reduces assembly difficulty, improves the efficiency of assembling, while realizing integrated molding, reduces cost.
Description
Technical field
The utility model relates to a kind of hollow shaft brshless DC motors, are related to technical field of motors.
Background technique
Brshless DC motor is made of motor body and driver, also known as commutatorless machine, is a kind of typical machine
Electrical integrated product.Direct current generator has response quickly, biggish starting torque, has from zero speed to rated speed and can provide
The performance of nominal torque.DC brushless motor is one kind of synchronous motor, and the revolving speed of rotor is by motor stator rotating excitation field
Speed and rotor number of poles (p) influence.Power supply unit can be inputted directly with DC supply input (generally 24v) or with alternating current
(110v/220v), if input is that alternating current needs first converted device (converter) to change into direct current.
Hollow shaft motor shaft compared with general motor is hollow, hollow shaft motor rotor shell component in the prior art
It being made of the cylinder of dress magnet, rotor endcap and hollow shaft, cylinder, rotor endcap and hollow shaft are mutually isolated components,
Need individually to carry out production production, mutual precision is difficult to ensure, influences the normal service life of motor, and assemble
Difficulty is larger, and packaging efficiency is lower, high production cost.
Utility model content
The utility model aim is to provide a kind of hollow shaft brshless DC motor, realizes cylinder, rotor endcap and hollow
Axis integration, improves the precision of part, reduces assembly difficulty, improve packaging efficiency, simultaneously because integrated molding, subtracts
Low cost.
The technical solution that the utility model embodiment solves above-mentioned technical problem is as follows: a kind of hollow shaft brushless dc
Machine, the motor include magnet, coil and stator core, and the motor further includes cylinder, and described cylinder one end extends inwardly
It is formed with rotor endcap, is formed with hollow in the middle part of the rotor endcap, the hollow edge is to perpendicular to the rotor endcap
Direction has extended to form sky spindle body, and the hollow axis body is parallel to each other with the cylinder, is formed between hollow axis body and cylinder
There is the space for accommodating the magnet, coil and stator core, forms structure one between the cylinder, rotor endcap and hollow axis body
The servo-electric motor hollow shafting rotor shell of body.
As the preferred embodiment of hollow shaft brshless DC motor, the magnet is adjacent with the inside of the cylinder, the magnetic
Body annularly arranges；It is equipped with the stator core on the inside of the magnet, is wound with the coil on the stator core.Magnet is used
In forming magnetic field in motor, coil windings is made to cut the magnetic induction line power generation of its generation or otherwise generate and turn during rotation
It is dynamic.
As the preferred embodiment of hollow shaft brshless DC motor, the magnet is using sintered NdFeB magnet, bonding neodymium iron
Boron magnets, ferrite, injecting magnetic or rubber magnet.Ndfeb magnet can be divided into Agglutinate neodymium-iron-boron and two kinds of sintered NdFeB, neodymium iron
Boron magnets are the permanent magnets with strong magnetic force, and bonded neodymium-iron-boron magnet is actually injection molding, and sintered NdFeB magnet is
It vacuumizes and is formed by high-temperature heating.Ferrite is the metal oxide with ferrimagnetism, ferritic resistivity ratio simple substance
Metal or alloy magnetic material is big, dielectric properties with higher.Ferritic magnetic property shows with higher when high frequency
Magnetic conductivity.Injecting magnetic adds magnetic powder to form by nylon, produces in such a way that injection molding machine is by ejection formation.Rubber magnet is iron oxygen
One of body magnetic material series, it is compound with synthetic rubber by bonded ferrite magnetic powder, through extrusion molding, calendering formation, it is injected into
The techniques such as type are made, have flexibility, elasticity and can warping property, be easily worked into strips, web-like, sheet, bulk, annulus and each
Kind complicated shape.
As the preferred embodiment of hollow shaft brshless DC motor, bearing is nested on the hollow axis body, the bearing is adopted
With oiliness bearing, ball bearing or fluid bearing.Bearing supports the part of hollow shaft in motor as one, it can be guided
The rotation of hollow shaft can also bear the component to dally in hollow shaft.Oiliness bearing is a kind of porous bearings, with metal powder
For primary raw material, oiliness bearing is the sintered body made of powder metallurgic method, in the fabrication process can freer adjustment apertures
Quantity, size, shape and distribution, at low cost, energy absorbing, noise is small, does not have to add lubricating oil etc. within the longer working time
Feature.Ball bearing is one kind of rolling bearing, and spherical alloy steel ball is mounted on to the centre of interior steel ring and outer rim, to roll
Mode come reduce the frictional force in power transmission process and improve machine power transmission efficiency.Fluid bearing possesses than oil-containing axis
Bigger oil storage space is held, and has loopback formula oil supply loop.
As the preferred embodiment of hollow shaft brshless DC motor, motor support base, the motor branch are equipped on the outside of the bearing
Seat is arranged between bearing and stator core.Motor support base plays the supporting role to magnet, coil and stator core.
As the preferred embodiment of hollow shaft brshless DC motor, the motor support base includes block end, the support end
Portion extends to form nesting part inwardly, and support portion is formed on the nesting part, is shelved on the branch on the inside of the stator core
On support part.
As the preferred embodiment of hollow shaft brshless DC motor, the nesting part periphery is cased with circuit board, the circuit board
It is annular in shape.The circuit board of motor is used to control the rotation angle and running speed of motor, realizes the control to duty ratio, reaches
To motor idle speed control, silicon-controlled or function can be can also be used by relay or power transistor drives in the driving circuit of motor
The driving of rate type metal-oxide-semiconductor field effect transistor forms simple R C low-pass filtering using two ceramic disc capacitors and a resistance, motor can be absorbed
The conduction type interference signal of generation, bulky capacitor are used for stable power-supplying electric current, balance motor inductive load.
As the preferred embodiment of hollow shaft brshless DC motor, position sensor, institute's rheme are arranged on the circuit board
Sensor is set using hall sensor or magnetic coder.Position sensor detects motor rotor position, output signal
Each phase winding of motor stator is connected in order in the on-off that control switch pipe is removed after logical conversion, guarantees the continuous work of motor
Make.
Hall sensor is one kind of magnetic sensitive position sensor, is using made of Hall effect.When Hall element is pressed
Be placed in external magnetic field it is required that passing to electric current, i.e., output Hall voltage signal, when it is not by external magnetic field, output end without
Signal.Making rotor-position sensor with Hall element, usually there are two types of modes.First way is that Hall element is pasted on electricity
Generator terminal interior surface has close to Hall element and therewith at a small―gap suture, is mounted on the permanent magnet coaxial with motor shaft.For two
Be conducted six state brshless DC motor of star three-phase, and three Hall elements are separated by 120 ° of electrical angles, permanent magnet in space
Polar arc width be 180 ° of electrical angles.In this way, three Hall elements just alternately export three width and are when rotor rotation
The square-wave signal of 120 ° of 180 ° of electric angles, phase mutual deviation electric angles.The second way is directly by Hall element application in stator electricity
Armature core air gap surface or winding overhang are at iron core, using the magnet main pole on rotor as the permanent magnetism of sensor
Body can determine whether rotor magnetic pole position according to the output signal of Hall element, will can drive inverter after signal enhanced processing
Work.
Magnetic coder can become electric signal or data conversion to communicate, the signal form of transimission and storage.Magnetic is compiled
Code device principle is to be measured using magnetic resistance or Hall element to the angle or shift value of the magnetic material of variation, magnetic material
The variation of material angle or displacement can cause the variation of certain resistance or voltage, be put by amplifying circuit to variable quantity
Greatly, output pulse signal or analog signals, achieve the purpose that measurement after being handled by single-chip microcontroller.
As the preferred embodiment of hollow shaft brshless DC motor, the servo-electric motor hollow shafting rotor shell uses powder metallurgical technique, powder
Last Shooting Technique, die-casting process or the preparation of overmold Shooting Technique.Powder metallurgy is to produce metal powder or use metal powder
(or mixture of metal powder and non-metal powder) produces metal material, composite material by shaping and being sintered as raw material
And the industrial technology of various types product.
Powder injection molding technique is to be manufactured the process of part with raw material (powder/adhesive mixture), is specifically included
Preformed: in plasticization unit, the adhesive portion of raw material can melt under the influence of temperature；Injection molding: plastic hybrid is in high pressure
Under be injected into the mold being fixed in clamping apparatus.Mold remains closed, while forming part hardens；Die sinking: in part
After cooling, nozzle can be removed by the movement of injection moulding apparatus from die location.Clamping apparatus is opened, the thimble system of injection moulding machine
System can automatic ejection forming part；Part removal: frangible part is removed from the mold using arm-and-hand system and is damaged without causing
It is bad.
Die-casting process is to be cast molten metal in high-voltage high-speed retrofilling using three big elements such as machine, mold and alloys
Type, and crystallization and freezing forms the process of casting under high pressure.Overmold injection molding be secondary injection molding technique, also referred to as set beer or
Person is encapsulated.After forming plastic cement raw material in primary plastic mould, part after molding is taken out, be put into it is secondary at
The of the same race or molding technique of another plastic material is re-injected in the mold of type.
As the preferred embodiment of hollow shaft brshless DC motor, hollow shaft brshless DC motor is applied in holder, machine
People or industrial equipment occasion.
The beneficial effects of the utility model are: being formed with hollow in the middle part of rotor endcap, hollow edge is to perpendicular to rotor-end
The direction of lid has extended to form sky spindle body, and hollow axis body is parallel to each other with cylinder, and appearance is formed between hollow axis body and cylinder
Receive the space of magnet, coil and stator core, the hollow shaft that structural integrity is formed between cylinder, rotor endcap and hollow axis body turns
Sub- shell, the utility model improve the precision of part, reduce assembly difficulty, improve the efficiency of assembling, while realizing one
Chemical conversion type, reduces cost.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the hollow shaft brshless DC motor in the utility model embodiment；
Fig. 2 is the forward sight structural schematic diagram of the hollow shaft brshless DC motor in the utility model embodiment；
Fig. 3 is the decomposition texture schematic diagram of the hollow shaft brshless DC motor in the utility model embodiment；
Fig. 4 is the diagrammatic cross-section along central axis DD of the hollow shaft brshless DC motor in the utility model embodiment；
Fig. 5 is the servo-electric motor hollow shafting rotor shell structure schematic diagram of the hollow shaft brshless DC motor in the utility model embodiment；
Wherein, 1, magnet；2, coil；3, stator core；4, cylinder；5, rotor endcap；6, hollow axis body；7, hollow shaft turns
Sub- shell；8, bearing；9, motor support base；10, block end；11, nesting part；12, support portion；13, circuit board.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of hollow shaft brshless DC motor, including magnet 1, coil 2 and fixed
Sub- iron core 3, motor further include cylinder 4, and 4 one end of cylinder has extended to form rotor endcap 5 inwardly, formed in the middle part of rotor endcap 5
Have hollow, hollow edge has extended to form sky spindle body 6, hollow axis body 6 and 4 phase of cylinder to the direction perpendicular to rotor endcap 5
It is mutually parallel, the space for accommodating magnet 1, coil 2 and stator core 3, cylinder 4, rotor are formed between hollow axis body 6 and cylinder 4
The servo-electric motor hollow shafting rotor shell 7 of structural integrity is formed between end cap 5 and hollow axis body 6.
In one embodiment of hollow shaft brshless DC motor, magnet 1 is adjacent with the inside of cylinder 4, and magnet 1 is annularly arranged
Column；It is equipped with stator core 3 on the inside of magnet 1, is wound with coil 2 on stator core 3.Magnet 1 is used to form magnetic field in motor,
2 winding of coil is set to cut the magnetic induction line power generation of its generation or otherwise generate rotation in rotation process.
Magnet 1 is using sintered NdFeB magnet, bonded neodymium-iron-boron magnet, ferrite, injecting magnetic or rubber magnet.Neodymium-iron-boron
Iron can be divided into Agglutinate neodymium-iron-boron and two kinds of sintered NdFeB, and ndfeb magnet is the permanent magnet with strong magnetic force, be bonded neodymium iron
Boron magnets are actually injection molding, and sintered NdFeB magnet is to vacuumize to form by high-temperature heating.Ferrite is that have Asia
Ferromagnetic metal oxide, ferritic resistivity ratio elemental metals or alloy magnetic material are big, dielectricity with higher
Energy.Ferritic magnetic property shows magnetic conductivity with higher when high frequency.Injecting magnetic adds magnetic powder to form by nylon, with injection molding machine
It is produced by way of ejection formation.Rubber magnet is one of ferrite magnetic material series, by bonded ferrite magnetic powder with
Synthetic rubber is compound, is made through techniques such as extrusion molding, calendering formation, injection mouldings, has flexibility, elasticity and can distort
Property, be easily worked into strips, web-like, sheet, bulk, annulus and various complicated shapes.
In one embodiment of hollow shaft brshless DC motor, bearing 8 is nested on hollow axis body 6, bearing 8 uses oil-containing
Bearing, ball bearing or fluid bearing.Bearing 8 supports the part of hollow shaft in motor as one, it can guide hollow
The rotation of axis can also bear the component to dally in hollow shaft.Oiliness bearing is a kind of porous bearings, based on metal powder
Want raw material, oiliness bearing is the sintered body made of powder metallurgic method, in the fabrication process can freer adjustment apertures quantity,
Size, shape and distribution have the characteristics that at low cost, energy absorbing, noise is small, does not have to add lubricating oil within the longer working time.
Ball bearing is one kind of rolling bearing, spherical alloy steel ball is mounted on to the centre of interior steel ring and outer rim, with roll mode
To reduce the frictional force in power transmission process and improve the transmission efficiency of machine power.Fluid bearing possesses than oiliness bearing more
Big oil storage space, and have loopback formula oil supply loop.
In one embodiment of hollow shaft brshless DC motor, motor support base 9 is equipped on the outside of bearing 8, motor support base 9 is arranged
Between bearing 8 and stator core 3.Motor support base 9 plays the supporting role to magnet 1, coil 2 and stator core 3.Motor branch
Seat 9 includes block end 10, and block end 10 extends to form nesting part 11 inwardly, support portion 12 is formed on nesting part 11,
It is shelved on the inside of stator core 3 on support portion 12.11 periphery of nesting part is cased with circuit board 13, and circuit board 13 is annular in shape.
The circuit board 13 of motor is used to control the rotation angle and running speed of motor, realizes the control to duty ratio, reaches
To motor idle speed control, the driving circuit of motor can by relay or power transistor drives, can also be used it is silicon-controlled or
The driving of power-type metal-oxide-semiconductor field effect transistor forms simple R C low-pass filtering using two ceramic disc capacitors and a resistance, electricity can be absorbed
The conduction type interference signal that machine generates, bulky capacitor are used for stable power-supplying electric current, balance motor inductive load.
Arrange that position sensor, position sensor use hall sensor or magnetic coder on circuit board 13.Position passes
Sensor detects motor rotor position, and output signal goes the on-off of control switch pipe after logical conversion, makes motor
Each phase winding of stator is connected in order, guarantees motor continuous work.
Hall sensor is one kind of magnetic sensitive position sensor, is using made of Hall effect.When Hall element is pressed
Be placed in external magnetic field it is required that passing to electric current, i.e., output Hall voltage signal, when it is not by external magnetic field, output end without
Signal.Making rotor-position sensor with Hall element, usually there are two types of modes.First way is that Hall element is pasted on electricity
Generator terminal interior surface has close to Hall element and therewith at a small―gap suture, is mounted on the permanent magnet 1 coaxial with motor shaft.For
Two are conducted six state brshless DC motor of star three-phase, and three Hall elements are separated by 120 ° of electrical angles, permanent magnetism in space
The polar arc width of body 1 is 180 ° of electrical angles.In this way, just alternately output is three wide for three Hall elements when rotor rotation
Degree is 180 ° of electric angles, the square-wave signal of 120 ° of electric angles of phase mutual deviation.The second way is directly by Hall element application fixed
Sub- armature core air gap surface or winding overhang are at iron core, using 1 main pole of magnet on rotor as sensor
Permanent magnet 1 can determine whether rotor magnetic pole position according to the output signal of Hall element, inverse by that can drive after signal enhanced processing
Become device work.
Magnetic coder can become electric signal or data conversion to communicate, the signal form of transimission and storage.Magnetic is compiled
Code device principle is to be measured using magnetic resistance or Hall element to the angle or shift value of the magnetic material of variation, magnetic material
The variation of material angle or displacement can cause the variation of certain resistance or voltage, be put by amplifying circuit to variable quantity
Greatly, output pulse signal or analog signals, achieve the purpose that measurement after being handled by single-chip microcontroller.
In one embodiment of hollow shaft brshless DC motor, servo-electric motor hollow shafting rotor shell 7 is infused using powder metallurgical technique, powder
Modeling technique, die-casting process or the preparation of overmold Shooting Technique.Powder metallurgy be produce metal powder or with metal powder (or gold
Belong to the mixture of powder and non-metal powder) be used as raw material, by shaping and be sintered, produce metal material, composite material and
The industrial technology of various types product.
Powder injection molding technique is to be manufactured the process of part with raw material (powder/adhesive mixture), is specifically included
Preformed: in plasticization unit, the adhesive portion of raw material can melt under the influence of temperature；Injection molding: plastic hybrid is in high pressure
Under be injected into the mold being fixed in clamping apparatus.Mold remains closed, while forming part hardens；Die sinking: in part
After cooling, nozzle can be removed by the movement of injection moulding apparatus from die location.Clamping apparatus is opened, the thimble system of injection moulding machine
System can automatic ejection forming part；Part removal: frangible part is removed from the mold using arm-and-hand system and is damaged without causing
It is bad.
Die-casting process is to be cast molten metal in high-voltage high-speed retrofilling using three big elements such as machine, mold and alloys
Type, and crystallization and freezing forms the process of casting under high pressure.Overmold injection molding be secondary injection molding technique, also referred to as set beer or
Person is encapsulated.After forming plastic cement raw material in primary plastic mould, part after molding is taken out, be put into it is secondary at
The of the same race or molding technique of another plastic material is re-injected in the mold of type.
The utility model hollow shaft brshless DC motor can be applied in holder, robot or industrial equipment occasion, rotor
It is formed with hollow in the middle part of end cap 5, hollow edge has extended to form sky spindle body 6, hollow shaft to the direction perpendicular to rotor endcap 5
Body 6 is parallel to each other with cylinder 4, and the sky for accommodating magnet 1, coil 2 and stator core 3 is formed between hollow axis body 6 and cylinder 4
Between, the servo-electric motor hollow shafting rotor shell 7 of structural integrity is formed between cylinder 4, rotor endcap 5 and hollow axis body 6, the utility model improves
The precision of part, reduces assembly difficulty, improves the efficiency of assembling, while realizing integrated molding, reduces cost.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (7)
1. a kind of hollow shaft brshless DC motor, the motor includes magnet (1), coil (2) and stator core (3), feature
Be: the motor further includes cylinder (4), and described cylinder (4) one end has extended to form rotor endcap (5) inwardly, and described turn
It is formed with hollow in the middle part of sub- end cap (5), the hollow edge extends to form free to the direction perpendicular to the rotor endcap (5)
Spindle body (6), the hollow axis body (6) are parallel to each other with the cylinder (4), are formed between hollow axis body (6) and cylinder (4)
Accommodate the space of the magnet (1), coil (2) and stator core (3), the cylinder (4), rotor endcap (5) and hollow axis body
(6) the servo-electric motor hollow shafting rotor shell (7) of structural integrity is formed between；
It is nested with bearing (8) on the hollow axis body (6), is equipped with motor support base (9) on the outside of the bearing (8), the motor branch
Seat (9) includes block end (10), and the block end (10) extends to form nesting part (11) inwardly, the nesting part (11)
On be formed with support portion (12), be shelved on the support portion (12) on the inside of the stator core (3).
2. a kind of hollow shaft brshless DC motor according to claim 1, it is characterised in that: the magnet (1) with it is described
The inside of cylinder (4) is adjacent, and the magnet (1) annularly arranges；The stator core (3) are equipped on the inside of the magnet (1), institute
It states and is wound with the coil (2) on stator core (3).
3. a kind of hollow shaft brshless DC motor according to claim 2, it is characterised in that: the magnet (1) is using burning
Tie ndfeb magnet, bonded neodymium-iron-boron magnet, ferrite, injecting magnetic or rubber magnet.
4. a kind of hollow shaft brshless DC motor according to claim 1, it is characterised in that: on the hollow axis body (6)
It is nested with bearing (8), the bearing (8) uses oiliness bearing, ball bearing or fluid bearing.
5. a kind of hollow shaft brshless DC motor according to claim 4, it is characterised in that: set on the outside of the bearing (8)
Have motor support base (9), the motor support base (9) is arranged between bearing (8) and stator core (3).
6. a kind of hollow shaft brshless DC motor according to claim 1, it is characterised in that: nesting part (11) periphery
It is cased with circuit board (13), the circuit board (13) is annular in shape.
7. a kind of hollow shaft brshless DC motor according to claim 6, it is characterised in that: cloth on the circuit board (13)
It is equipped with position sensor, the position sensor uses hall sensor or magnetic coder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785171.XU CN208874455U (en) | 2018-10-31 | 2018-10-31 | A kind of hollow shaft brshless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785171.XU CN208874455U (en) | 2018-10-31 | 2018-10-31 | A kind of hollow shaft brshless DC motor |
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| CN208874455U true CN208874455U (en) | 2019-05-17 |
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| CN201821785171.XU Active CN208874455U (en) | 2018-10-31 | 2018-10-31 | A kind of hollow shaft brshless DC motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149890A (en) * | 2018-10-31 | 2019-01-04 | 深圳市恒驱电机股份有限公司 | A kind of hollow shaft brshless DC motor |
| US11821604B2 (en) | 2021-09-17 | 2023-11-21 | Chian Yih Optotech Co., Ltd. | Adaptive illuminating headlight |
-
2018
- 2018-10-31 CN CN201821785171.XU patent/CN208874455U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149890A (en) * | 2018-10-31 | 2019-01-04 | 深圳市恒驱电机股份有限公司 | A kind of hollow shaft brshless DC motor |
| US11821604B2 (en) | 2021-09-17 | 2023-11-21 | Chian Yih Optotech Co., Ltd. | Adaptive illuminating headlight |
| TWI824297B (en) * | 2021-09-17 | 2023-12-01 | 誠益光電科技股份有限公司 | Road-adaptive illuminating headlight |
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Address after: 518000 701, No. 301-401,71-7, No. 71-1, Xintian Avenue, Xintian Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong Province Patentee after: Shenzhen Hengdrive Motor Co.,Ltd. Address before: Floor 3, Building A, No. 71-1, Xintian Avenue, Xintian Community, Fuyong Subdistrict, Bao'an District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN HENGDRIVE ELECTRIC CO.,LTD. |