CN110345102A - A kind of blower transmission shaft of hollow split type structure - Google Patents

A kind of blower transmission shaft of hollow split type structure Download PDF

Info

Publication number
CN110345102A
CN110345102A CN201910646200.7A CN201910646200A CN110345102A CN 110345102 A CN110345102 A CN 110345102A CN 201910646200 A CN201910646200 A CN 201910646200A CN 110345102 A CN110345102 A CN 110345102A
Authority
CN
China
Prior art keywords
carbon fiber
hollow shaft
fiber hollow
axle envelope
axle
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.)
Granted
Application number
CN201910646200.7A
Other languages
Chinese (zh)
Other versions
CN110345102B (en
Inventor
李建森
王磊
单二虎
范阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co Ltd
Original Assignee
LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co Ltd filed Critical LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co Ltd
Priority to CN201910646200.7A priority Critical patent/CN110345102B/en
Publication of CN110345102A publication Critical patent/CN110345102A/en
Application granted granted Critical
Publication of CN110345102B publication Critical patent/CN110345102B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053Shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/601Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations

Abstract

A kind of blower transmission shaft of hollow split type structure, including carbon fiber hollow shaft, the both ends of carbon fiber hollow shaft are separately installed with axle envelope and axle sleeve, one end of axle envelope is plugged in the inner hole of carbon fiber hollow shaft, the both ends of carbon fiber hollow shaft offer two circle pin holes respectively, every circle pin hole is the multiple radial through-hole being evenly spaced on along the circumferential direction of carbon fiber hollow shaft, two circle pin holes are offered on axle sleeve, the pin hole of axle sleeve is aligned with the two circle pin holes of carbon fiber hollow shaft the same end one by one respectively, a circle pin hole is offered on one end that axle envelope is plugged in carbon fiber hollow shaft, a circle pin hole of the pin hole of axle envelope with carbon fiber hollow shaft by proximal ends is aligned one by one;Positioning pin is inserted in all pin holes being mutually aligned in carbon fiber hollow shaft, axle sleeve and axle envelope;Epoxy resin is filled between carbon fiber hollow shaft and axle envelope outer wall and sleeve lining, for the solidification of carbon fiber hollow shaft, axle envelope and axle sleeve to be bonded as one.

Description

A kind of blower transmission shaft of hollow split type structure
Technical field
The present invention relates to blower transmission shaft field more particularly to a kind of blower transmission shafts of hollow split type structure.
Background technique
Blower transmission shaft is the important component of blower, and blower transmission shaft generally passes through a pair of bearings and is erected at Fan casing In vivo, it is set with draught fan impeller on transmission shaft, and is connected to motor by transmission components such as motor wheel discs, to transmit motor Powered belt moves wheel rotation.In order to meet the requirement of blower, the performance of blower is promoted, so blower transmission shaft needs light weight Change, increases wind-force to mitigate the performance load of blower, and blower transmission shaft also needs to have stronger anti-seismic performance, to reduce Noise during fan operation.Existing blower transmission shaft is typically constructed of metal, and weight is larger, can be adopted to mitigate weight With hollow shaft, but the hollow shaft anti-seismic performance of metal material is insufficient, and noise is larger when operation, and the hollow shaft of metal material It is easy to happen corrosion, can not be used under more rugged environment.
Carbon fibre material is one kind using resin as matrix, and carbon fiber wire is reinforcing material, height of the phosphorus content 90% or more Intensity, the new fiber materials of high modulus fibre, be piled up by organic fibers such as flake graphites along fiber axial direction and At through microcrystalline graphite material obtained from carbonization and graphitization processing.The quality of carbon fibre material is lighter than metallic aluminium, but intensity Higher than steel, and there is corrosion-resistant, anti-vibration characteristic, have both the soft machinability of textile fabric, in defence and military and Civilian aspect is all important materials.Using hollow blower transmission shaft made of carbon fibre material, not only weight is significantly less than identical The metal hollow axis of size, intensity is also on metal hollow axis, and since the anti-seismic performance of carbon fibre material itself is stronger, So the anti-seismic performance of carbon fiber hollow shaft is also better than metal hollow axis, the hollow blower transmission shaft of metal material can be overcome Disadvantage.
But need to install the components such as impeller, bearing and motor wheel disc on blower transmission shaft, and above-mentioned part is The bearing of metal material, metal material must be sleeved on the axis of metal material, i.e. cooperation between bearing and associated part is necessary Contact between metal, remaining impeller and motor wheel disc etc. are also required to could preferably using being engaged between metal Performance is played, the hollow blower transmission shaft of carbon fibre materials is caused to be difficult to directly use.Although being proposed in the prior art in carbon The hollow blower both ends of the drive shaft of Fiber Materials installs the structure of half shaft coupling of metal, but half shaft coupling and carbon fiber hollow shaft sheet additional Bonding strength between body is insufficient, and precision when half shaft coupling and the hollow shaft body synchronous rotation of carbon fiber is also poor, makes Decline at the service performance of blower transmission shaft and service life.
Summary of the invention
To solve the problems, such as above-mentioned existing blower transmission shaft, the present invention provides a kind of blowers of hollow split type structure Transmission shaft.
Used technical solution is the present invention to solve above-mentioned technical problem: a kind of blower biography of hollow split type structure Moving axis, including a carbon fiber hollow shaft, the both ends of carbon fiber hollow shaft are separately installed with the axle envelope of a metal material, described Axle envelope is open column shape structure, and one end of axle envelope and the internal diameter of carbon fiber hollow shaft match and be plugged in carbon fiber hollow shaft In inner hole, the shaft shoulder in the middle part of axle envelope is pressed on the end face of carbon fiber hollow shaft;The both ends of carbon fiber hollow shaft are also set with There is the axle sleeve of a metal material, the axle sleeve plugs the corresponding outer circle circumferential direction carbon fiber of axle envelope position from carbon fiber hollow shaft end It ties up and extends in the middle part of hollow shaft;The both ends of carbon fiber hollow shaft offer two circle pin holes respectively, and every circle pin hole is along carbon fiber sky Multiple radial through-hole that the circumferential direction of mandrel is evenly spaced on offer two circle pin holes, the pin hole difference of axle sleeve on the axle sleeve It is aligned with the two circle pin holes of carbon fiber hollow shaft the same end, is opened on one end that the axle envelope is plugged in carbon fiber hollow shaft one by one Equipped with a circle pin hole, a circle pin hole of the pin hole of axle envelope with carbon fiber hollow shaft by proximal ends is aligned one by one;Carbon fiber hollow shaft, Positioning pin is inserted on axle sleeve and axle envelope in all pin holes being mutually aligned, the length of positioning pin is plugged more not less than it A total length for being mutually aligned pin hole;Between the inner wall of carbon fiber hollow shaft and the axle envelope outer wall being bonded and carbon fiber is empty It is filled with epoxy resin between the outer wall of mandrel and the sleeve lining being bonded, is used for carbon fiber hollow shaft, axle envelope and axis Set solidification is bonded as one.
Preferably, the diameter of all pin holes is equal, and the quantity of every circle pin hole is four.
Preferably, screw thread is offered on excircle of the axle envelope far from carbon fiber hollow shaft.
Preferably, keyway is offered on excircle of the axle envelope far from carbon fiber hollow shaft.
Preferably, screw thread and keyway are offered on the excircle of the axle sleeve.
According to the above technical scheme, the beneficial effects of the present invention are:
The blower transmission shaft of hollow split type structure provided by the invention uses a carbon fiber hollow shaft and is driven as blower The main body of axis makes blower transmission shaft lighter in weight compared with traditional metal drive shaft, and makes the anti-seismic performance of blower transmission shaft It is stronger with corrosion resistance.
The both ends of carbon fiber hollow shaft are separately installed with the axle envelope and axle sleeve of metal material, and the bearing on blower transmission shaft can To be sleeved on the excircle of axle sleeve, and the transmission components such as draught fan impeller and motor wheel disc can be connect with axle envelope, it will be able to Under the premise of the main body of blower transmission shaft is carbon fibre materials, the components such as impeller, bearing and motor wheel disc is enable to pass through Being engaged between metal is driven axis connection with blower, and bearing etc. is avoided directly to contact and shadow with the transmission shaft of carbon fibre materials It rings and uses, guarantee that the performance of above-mentioned part is not fully exerted.
It is filled with epoxy resin between carbon fiber hollow shaft and axle envelope and axle sleeve, is bonded and is made by the solidification of epoxy resin With keeping carbon fiber hollow shaft and axle envelope and axle sleeve three firmly be bonded for an entirety, bonding strength, and carbon are improved Fiber hollow shaft with multiple pin holes being aligned one by one are offered between axle envelope and axle sleeve, be all inserted in the pin hole of every group of alignment Positioning pin enables carbon fiber hollow shaft closely and accurately to position with axle envelope and axle sleeve three, and also can by positioning pin Torque is enough transmitted, so that positioning pin is cooperated with epoxy resin and drives carbon fiber hollow shaft is synchronous with axle envelope and axle sleeve three to turn It is dynamic, therefore the present invention is matched by the bonding of epoxy resin and the circumferentially positioned effect of positioning pin, can guarantee split type knot Bonding strength in the blower transmission shaft of structure between each separate structure, and then guarantee when each separate structure of transmission shaft rotates synchronously Precision promotes service performance and the service life of blower transmission shaft.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the schematic cross-sectional view of Fig. 1.
Marked in the figure: 1, carbon fiber hollow shaft, 2, axle envelope, 3, axle sleeve, 4, pin hole, 5, screw thread, 6, keyway.
Specific embodiment
Referring to attached drawing, specific embodiment is as follows:
A kind of blower transmission shaft of hollow split type structure, including a carbon fiber hollow shaft 1, the both ends of carbon fiber hollow shaft 1 It is separately installed with the axle envelope 2 of a metal material, the axle envelope 2 is open column shape structure, and one end of axle envelope 2 and carbon fiber are hollow The internal diameter of axis 1 matches and is plugged in the inner hole of carbon fiber hollow shaft 1, and it is hollow that the shaft shoulder at 2 middle part of axle envelope is pressed on carbon fiber On the end face of axis 1, axle envelope 2 offers keyway 6, the outer circle of one of axle envelope 2 on the excircle far from carbon fiber hollow shaft 1 It is also provided with screw thread 5 on week, so that draught fan impeller is fitted in screwed axle envelope 2 by keyway 6 and screw thread 5, It is then connect by keyway 6 with transmission parts such as motor wheel discs in the axle envelope 2 of the other end;Also distinguish at the both ends of carbon fiber hollow shaft 1 It is set with the axle sleeve 3 of a metal material, the axle sleeve 3 plugs the corresponding outer circle of 2 position of axle envelope from 1 end of carbon fiber hollow shaft Extend in the middle part of peripheral carbon fibres hollow shaft 1, screw thread 5 and keyway 6, a pair of blower transmission shaft are offered on the excircle of axle sleeve 3 Base bearing is separately mounted on the excircle of two axle sleeves 3, and the internal diameter of bearing is less than the maximum outside diameter of axle sleeve 3, during installation will Two bearings are inserted in from the both ends of blower transmission shaft to centre respectively, and the end face of bearing is made to withstand the maximum outer circle position of axle sleeve 3, Boss limitation bearing is formed by the displacement in the middle part of blower transmission shaft from the maximum outer circle of axle sleeve 3, bearing is far from blower transmission shaft The side at middle part is positioned by keyway 6, while loose ring of setting up defences is twisted at adjacent screw thread 5 on axle sleeve 3, passes through lock ring and axle sleeve 3 maximum outer circles are formed by boss cooperation and hold out against bearing, so that bearing be made to be fixed on axle sleeve 3.
The both ends of carbon fiber hollow shaft 1 offer two circle pin holes 4 respectively, and every circle pin hole 4 is along carbon fiber hollow shaft 1 The multiple radial through-hole being circumferentially evenly spaced on, offer two circle pin holes 4 on the axle sleeve 3, the pin hole 4 of axle sleeve 3 respectively with The two circle pin holes 4 of 1 the same end of carbon fiber hollow shaft are aligned one by one, and the axle envelope 2 is plugged on one end in carbon fiber hollow shaft 1 A circle pin hole 4 is offered, a circle pin hole 4 of the pin hole 4 of axle envelope 2 with carbon fiber hollow shaft 1 by proximal ends is aligned one by one, above-mentioned every The quantity for enclosing pin hole 4 is four, and the diameter of all pin holes is equal;Own in carbon fiber hollow shaft 1, axle sleeve 3 and axle envelope 2 It is inserted with positioning pin in the pin hole 4 being mutually aligned, the length of positioning pin multiple is mutually aligned pin hole 4 not less than what it was plugged Total length;Between the inner wall of carbon fiber hollow shaft 1 and 2 outer wall of axle envelope being bonded and the outer wall of carbon fiber hollow shaft 1 with Epoxy resin is filled between 3 inner wall of axle sleeve being bonded, it is viscous for solidifying carbon fiber hollow shaft 1, axle envelope 2 and axle sleeve 3 It is connected in one, enables carbon fiber hollow shaft 1, axle envelope 2 fine rotational synchronous with axle sleeve 3.

Claims (5)

1. a kind of blower transmission shaft of hollow split type structure, it is characterised in that: including a carbon fiber hollow shaft (1), carbon fiber The both ends of dimension hollow shaft (1) are separately installed with the axle envelope (2) of a metal material, and the axle envelope (2) is open column shape structure, axis The internal diameter of one end and carbon fiber hollow shaft (1) for sealing (2) matches and is plugged in the inner hole of carbon fiber hollow shaft (1), axle envelope (2) shaft shoulder in the middle part of is pressed on the end face of carbon fiber hollow shaft (1);The both ends of carbon fiber hollow shaft (1) are also respectively installed with The axle sleeve (3) of one metal material, the axle sleeve (3) plug the corresponding outer of axle envelope (2) position from carbon fiber hollow shaft (1) end Extend in the middle part of circle peripheral carbon fibres hollow shaft (1);The both ends of carbon fiber hollow shaft (1) offer two circle pin holes (4), every circle respectively Pin hole (4) is the multiple radial through-hole being evenly spaced on along the circumferential direction of carbon fiber hollow shaft (1), is opened on the axle sleeve (3) Equipped with two circles pin hole (4), the pin hole (4) of axle sleeve (3) encloses pin hole (4) one by one with the two of carbon fiber hollow shaft (1) the same end respectively It is aligned, offers a circle pin hole (4), the pin of axle envelope (2) on one end that the axle envelope (2) is plugged in carbon fiber hollow shaft (1) Circle pin hole (4) of the hole (4) with carbon fiber hollow shaft (1) by proximal ends is aligned one by one;Carbon fiber hollow shaft (1), axle sleeve (3) and Positioning pin is inserted in axle envelope (2) in all pin holes (4) being mutually aligned, the length of positioning pin is plugged more not less than it A total length for being mutually aligned pin hole (4);Between the inner wall of carbon fiber hollow shaft (1) and axle envelope (2) outer wall being bonded and Epoxy resin is filled between the outer wall of carbon fiber hollow shaft (1) and axle sleeve (3) inner wall being bonded, for carbon fiber is empty Mandrel (1), axle envelope (2) and axle sleeve (3) solidification are bonded as one.
2. a kind of blower transmission shaft of hollow split type structure according to claim 1, it is characterised in that: all pin holes (4) diameter is equal, and the quantity of every circle pin hole (4) is four.
3. a kind of blower transmission shaft of hollow split type structure according to claim 1, it is characterised in that: the axle envelope (2) screw thread (5) are offered on the excircle far from carbon fiber hollow shaft (1).
4. a kind of blower transmission shaft of hollow split type structure according to claim 1, it is characterised in that: the axle envelope (2) keyway (6) are offered on the excircle far from carbon fiber hollow shaft (1).
5. a kind of blower transmission shaft of hollow split type structure according to claim 1, it is characterised in that: the axle sleeve (3) screw thread (5) and keyway (6) are offered on excircle.
CN201910646200.7A 2019-07-17 2019-07-17 Fan transmission shaft of hollow split type structure Active CN110345102B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910646200.7A CN110345102B (en) 2019-07-17 2019-07-17 Fan transmission shaft of hollow split type structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910646200.7A CN110345102B (en) 2019-07-17 2019-07-17 Fan transmission shaft of hollow split type structure

Publications (2)

Publication Number Publication Date
CN110345102A true CN110345102A (en) 2019-10-18
CN110345102B CN110345102B (en) 2024-03-12

Family

ID=68175632

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910646200.7A Active CN110345102B (en) 2019-07-17 2019-07-17 Fan transmission shaft of hollow split type structure

Country Status (1)

Country Link
CN (1) CN110345102B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233761A (en) * 2022-01-24 2022-03-25 沈阳工业大学 Connecting device of carbon fiber composite transmission shaft

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320579A (en) * 1990-06-23 1994-06-14 Gkn Automotive Ag Energy absorbing driveshaft connections
EP2154386A1 (en) * 2008-08-11 2010-02-17 Siemens Aktiengesellschaft Pillow block with a split magnetic radial bearing and a split touch-down bearing in a common split bearing housing
DE102011085962A1 (en) * 2011-11-08 2013-05-23 Leichtbau-Zentrum Sachsen Gmbh Profile shaft for use with internal profile made of fiber composite material in drive shaft of aircraft and motor vehicle, has area that forms profile shell, where profile shell has profiled cross-section with tooth bases and tooth points
CN107031068A (en) * 2017-04-28 2017-08-11 武汉理工大学 A kind of equation motorcycle race carbon fiber semiaxis for carrying high pulling torque and preparation method thereof
CN207906116U (en) * 2018-01-22 2018-09-25 石家庄金士顿轴承科技有限公司 Bilobed wheel pull rod permanent magnet rotor structure for air suspension centrifugal blower
CN210265247U (en) * 2019-07-17 2020-04-07 洛阳北玻台信风机技术有限责任公司 Fan transmission shaft of hollow split type structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320579A (en) * 1990-06-23 1994-06-14 Gkn Automotive Ag Energy absorbing driveshaft connections
EP2154386A1 (en) * 2008-08-11 2010-02-17 Siemens Aktiengesellschaft Pillow block with a split magnetic radial bearing and a split touch-down bearing in a common split bearing housing
DE102011085962A1 (en) * 2011-11-08 2013-05-23 Leichtbau-Zentrum Sachsen Gmbh Profile shaft for use with internal profile made of fiber composite material in drive shaft of aircraft and motor vehicle, has area that forms profile shell, where profile shell has profiled cross-section with tooth bases and tooth points
CN107031068A (en) * 2017-04-28 2017-08-11 武汉理工大学 A kind of equation motorcycle race carbon fiber semiaxis for carrying high pulling torque and preparation method thereof
CN207906116U (en) * 2018-01-22 2018-09-25 石家庄金士顿轴承科技有限公司 Bilobed wheel pull rod permanent magnet rotor structure for air suspension centrifugal blower
CN210265247U (en) * 2019-07-17 2020-04-07 洛阳北玻台信风机技术有限责任公司 Fan transmission shaft of hollow split type structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233761A (en) * 2022-01-24 2022-03-25 沈阳工业大学 Connecting device of carbon fiber composite transmission shaft

Also Published As

Publication number Publication date
CN110345102B (en) 2024-03-12

Similar Documents

Publication Publication Date Title
CN103307124B (en) High speed rotor location connecting structure
CN110345102A (en) A kind of blower transmission shaft of hollow split type structure
CN210265247U (en) Fan transmission shaft of hollow split type structure
CN205639353U (en) High -elasticity shaft coupler
CN107313962A (en) A kind of method for optimizing the rotor performance with foil air bearing
CN109386553A (en) A kind of shaft coupling
CN209444732U (en) A kind of shaft coupling
CN210074984U (en) Generator rotor shaft
CN212985980U (en) Reduction gearbox input shaft device compatible with parking ratchet wheel
CN108915919A (en) A kind of Design of High Pressure Common Rail Diesel Engine common rail pump drive
CN207687172U (en) A kind of driven axle
CN208294983U (en) Fixed shaft type electrically controlled gearbox countershaft assembly
CN208950754U (en) A kind of Design of High Pressure Common Rail Diesel Engine common rail pump drive
CN207877001U (en) A kind of groove drum of textile machine
CN201779169U (en) Universal flexible multifunctional coupling
CN201106619Y (en) Transmission shaft of beach vehicle
CN219673226U (en) Tandem conical gear with tandem aggregate structure
CN214248227U (en) Reduction gearbox output shaft mounting structure
CN215521361U (en) Connection structure of impeller and shaft
CN219602412U (en) Novel hot-pressing roller
CN215059348U (en) Gear box
CN208474307U (en) A kind of gear shaft having lubricating function
CN208982338U (en) Power automotive electronic water pump abrasion-proof structure in new energy
CN205689569U (en) A kind of clutch shaft
CN211222889U (en) High-strength bicycle hub

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
CB02 Change of applicant information

Address after: 471000 Luoyang, Henan, Luoyang, China (Henan) free trade test zone, Luoyang section, Hi-tech Development Zone, Riverside Road No. 20

Applicant after: Luoyang Beibo sanyuanliu Fan Technology Co.,Ltd.

Address before: 471000 Luoyang, Henan, Luoyang, China (Henan) free trade test zone, Luoyang section, Hi-tech Development Zone, Riverside Road No. 20

Applicant before: LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co.,Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant