CN220212216U - Air inlet duct module of noise reduction blower - Google Patents
Air inlet duct module of noise reduction blower Download PDFInfo
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- CN220212216U CN220212216U CN202322078181.7U CN202322078181U CN220212216U CN 220212216 U CN220212216 U CN 220212216U CN 202322078181 U CN202322078181 U CN 202322078181U CN 220212216 U CN220212216 U CN 220212216U
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- air
- air inlet
- noise reduction
- honeycomb net
- air intake
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- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 15
- 230000001413 cellular effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of blowers, in particular to an air inlet channel module of a noise reduction blower. The novel air conditioner comprises an inner air duct shell, a PCB (printed circuit board), a noise reduction honeycomb net, a high-speed motor and a heater, wherein the PCB, the noise reduction honeycomb net, the high-speed motor and the heater are sequentially arranged inside the inner air duct shell, and an air outlet and an air inlet are respectively arranged at the front end and the rear end of the inner air duct shell. Through addding the honeycomb net of making an uproar that falls between the air inlet wind channel that is equipped with the PCB board and the air intake of motor, utilize the honeycomb net of making an uproar to the air current of air inlet wind channel to assemble, the air current that makes the entering motor is more stable, reduces the influence of the air current disturbance in PCB board department to the motor air intake, has reduced wind noise.
Description
Technical Field
The utility model relates to the technical field of blowers, in particular to an air inlet channel module of a noise reduction blower.
Background
Hair dryers are a commonly used household appliance that dry and shape hair by creating an air flow through the motor drive. Because the motor can enable the air flow to flow at a high speed in the blower, when the air inlet of the motor is unstable or the internal air channel is not smooth and turbulence is generated, the noise of the blower is directly caused to be too large, and therefore the use experience of a user is affected. When the existing blower is designed, in order to fully utilize the internal space, the PCB board can be arranged in an air inlet duct of the blower, as the surface of the PCB board is provided with an electrical element which can be raised, disturbance of air flow can be caused when the air flow passes through the PCB board, the air flow entering the motor is unstable, and the problem of overlarge noise at the air inlet end of the blower is caused.
Disclosure of Invention
The utility model provides an air inlet channel module of a noise reduction blower, which aims to solve the problem that the air inlet end of the existing blower generates larger noise.
The utility model provides an air inlet channel module of a noise reduction blower, which comprises an inner channel shell, a PCB (printed circuit board), a noise reduction honeycomb net, a high-speed motor and a heater, wherein the PCB, the noise reduction honeycomb net, the high-speed motor and the heater are sequentially arranged in the inner channel shell along the flow direction of an air channel, and the front end and the rear end of the inner channel shell are respectively provided with an air outlet and an air inlet.
As a further improvement of the utility model, the noise reduction honeycomb net comprises a planar honeycomb net, one side of the planar honeycomb net is attached to the air inlet of the high-speed motor, and the other side of the planar honeycomb net faces the PCB board.
As a further improvement of the utility model, the noise reduction honeycomb net comprises a concave honeycomb net, one side of the concave honeycomb net is a plane, the other side of the concave honeycomb net is a concave arc extending from the edge to the center, one side of the plane of the concave honeycomb net faces to the air inlet of the high-speed motor, and one side of the concave arc of the concave honeycomb net faces to the PCB board.
As a further improvement of the utility model, the noise reduction honeycomb net further comprises a planar honeycomb net, one side of the planar honeycomb net is attached to the air inlet of the high-speed motor, the other side of the planar honeycomb net faces to one side of the plane of the concave honeycomb net, and one side of the concave arc of the concave honeycomb net faces to the PCB.
As a further improvement of the utility model, the PCB is eccentrically connected inside the inner air duct shell, the surface of the PCB is taken as a boundary, the bottom surface of the PCB and the inner air duct shell form a main air inlet duct, the top surface of the PCB containing electronic elements and the inner air duct shell form a secondary air inlet duct, and the main air inlet duct and the secondary air inlet duct are converged at a noise reduction honeycomb net.
As a further improvement of the utility model, the inner air duct shell is provided with an eccentric chamfer at the joint of the secondary air inlet duct and the noise reduction honeycomb net, and the eccentric chamfer is folded and inclined from the secondary air inlet duct to the noise reduction honeycomb net.
As a further improvement of the utility model, the air inlet channel module of the noise reduction blower further comprises an air inlet rear cover, wherein the air inlet rear cover is provided with air inlet meshes, the air inlet rear cover is connected with the rear end of the inner air channel shell, the air inlet meshes are aligned with the air inlet of the inner air channel shell, and the air inlet area of the air inlet covers the air inlet area of the air inlet meshes.
As a further improvement of the utility model, the air inlet channel module of the noise reduction blower further comprises a filter screen, wherein the filter screen is arranged on the air inlet rear cover, and the filter screen is positioned between the air inlet and the air inlet mesh.
As a further improvement of the utility model, the air inlet channel module of the noise reduction blower further comprises a main body shell and a control key, wherein the control key is arranged outside the inner channel shell, the main body shell is connected outside the inner channel shell, the main body shell is provided with a control hole site, the control hole site is aligned with the control key, and the control key is connected with the PCB.
As a further improvement of the utility model, the air inlet duct module of the noise reduction blower further comprises an air outlet adapter, one end of the air outlet adapter is connected with the front end of the inner duct shell, the other end of the air outlet adapter is externally connected with an air outlet guide piece, and the air outlet adapter is provided with an air outlet through hole.
The beneficial effects of the utility model are as follows: through addding the honeycomb net of making an uproar that falls between the air inlet wind channel that is equipped with the PCB board and the air intake of motor, utilize the honeycomb net of making an uproar to the air current of air inlet wind channel to assemble, the air current that makes the entering motor is more stable, reduces the influence of the air current disturbance in PCB board department to the motor air intake, has reduced wind noise.
Drawings
FIG. 1 is an overall block diagram of an air inlet duct module of a noise reduction blower of the present utility model;
FIG. 2 is a partial exploded view of an air inlet duct module of the noise reduction blower of the present utility model;
FIG. 3 is a fully exploded view of the air inlet duct module of the noise reduction blower of the present utility model;
FIG. 4 is an assembled block diagram of the noise reduction honeycomb net and the inner air duct housing of the present utility model;
FIG. 5 is an internal block diagram of an air inlet duct module of the noise reduction blower of the present utility model;
FIG. 6 is a cross-sectional side view of the structure of the noise reduction cellular network of the present utility model;
FIG. 7 is a cross-sectional view of the air inlet duct module of the noise reduction blower of the present utility model;
FIG. 8 is a block diagram of the rear cover of the air intake in the present utility model;
fig. 9 is a structural view of a comparative prior art rear intake cover in accordance with the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
As shown in fig. 1 to 5, an air inlet duct module of a noise reduction blower of the present utility model includes a main body casing 1, an inner duct casing 2, a PCB board 3, a noise reduction honeycomb net 4, a high-speed motor 5, and a heater 6, wherein the PCB board 3, the noise reduction honeycomb net 4, the high-speed motor 5, and the heater 6 are sequentially installed inside the inner duct casing 2 along the flow direction of the duct, the front end and the rear end of the inner duct casing 2 are provided with an air outlet and an air inlet 21, the main body casing 1 is connected outside the inner duct casing 2, and the air outlet at the front end of the inner duct casing 2 is externally connected with an air outlet guide.
Under the operation of the high-speed motor 5, low pressure is formed in the inner air duct shell 2, external air flows in from the air inlet 21 of the inner air duct shell 2, flows through the cavity where the PCB 3 is positioned, is concentrated and converged to the noise reduction honeycomb net 4, and is uniformly divided into a plurality of small air flows through uniformly distributed meshes, so that the air flows are rectified before entering the high-speed motor 5, the flow speed and the flow quantity of the air flows are stable, and the influence of turbulence is reduced; the air flow is pressurized by the high-speed motor 5 and then is output to the heater 6, a heating wire is placed in the heater 6 to heat the flowing air flow, and finally heated and pressurized air is formed and blown to hair through the guidance of the air outlet air guide piece. The noise reduction honeycomb net 4 reduces the generation of turbulence, stabilizes the airflow entering the high-speed motor 5, and stabilizes the air inlet quantity of the high-speed motor 5, thereby achieving the effect of reducing wind noise.
As shown in fig. 4 and 5, the noise reduction cellular network 4 includes a planar cellular network 41, one side of the planar cellular network 41 is attached to the air inlet of the high-speed motor 5, and the other side of the planar cellular network 41 faces the PCB board 3. As an embodiment, the planar honeycomb net 41 may be used alone, and the surface of the planar honeycomb net is uniformly distributed with a plurality of mesh openings, and the mesh openings may be hexagonal, circular or other special-shaped holes. The planar honeycomb net 41 is attached to the air inlet of the high-speed motor 5, namely, the air inlet of the fan blade of the high-speed motor 5, so that the air flow flowing in the air channel cavity where the PCB 3 is positioned can be rectified and then enters the high-speed motor 5, and the effect of noise reduction is achieved. The planar cellular network 41 may be a metal network.
As shown in fig. 4 to 6, the noise reduction honeycomb net 4 includes a concave honeycomb net 42, one side of the concave honeycomb net 42 is a plane, the other side of the concave honeycomb net 42 is a concave arc extending from edge to center, one side of the plane of the concave honeycomb net 42 faces an air inlet of the high-speed motor 5, and one side of the concave arc of the concave honeycomb net 42 faces the PCB board 3. As an implementation manner, the concave honeycomb net 42 can be used alone, and is arranged at the upper wind gap of the fan blade of the high-speed motor 5, and a plurality of meshes are uniformly distributed on the surface of the concave honeycomb net, and the meshes can be hexagonal, circular or other special-shaped holes. The concave arc-shaped surface 43 of the concave honeycomb net 42 facing the PCB 3 can converge and rectify the air flow flowing in the air channel cavity where the PCB 3 is located, meanwhile, the concave arc-shaped structure is also that the windward side is enlarged, the air inlet area is increased, the air quantity converged in the same time is increased, and sufficient air quantity is supplied to the high-speed motor 5 to avoid wind noise caused by unstable air inlet, so that the effect of further noise reduction is achieved. The concave cellular network 42 may be a plastic network.
The noise reduction honeycomb net 4 further comprises a planar honeycomb net 41, one side of the planar honeycomb net 41 is attached to the air inlet of the high-speed motor 5, the other side of the planar honeycomb net 41 faces to one side of the plane of the concave honeycomb net 42, and one side of the concave arc of the concave honeycomb net 42 faces to the PCB 3. As another embodiment, the concave cellular network 42 and the planar cellular network 41 may be used together, where the concave cellular network 42 is disposed at an upper air port of the planar cellular network 41, and this structure combines the advantages of the concave cellular network 42 and the planar cellular network 41, and after the airflow flowing in the air duct chamber where the PCB board 3 is located is converged and rectified by the concave cellular network 42, the airflow entering the high-speed motor 5 is finally more stable after being further rectified by the planar cellular network 41, so as to further improve the noise reduction effect.
As shown in fig. 7, the PCB 3 is eccentrically connected inside the inner air duct housing 2, and the main air intake duct 22 is formed by the bottom surface of the PCB 3 and the inner air duct housing 2, the secondary air intake duct 23 is formed by the top surface of the PCB 3 containing electronic components and the inner air duct housing 2, and the main air intake duct 22 and the secondary air intake duct 23 converge at the noise reduction honeycomb net 4. Because the electronic component on the top surface of the PCB 3 can disturb the stability of the air flow, the PCB 3 is eccentrically connected, i.e. the surface of the PCB 3 containing the protruding electronic component is as close to one side of the inner air duct housing 2 as possible, thereby reducing the space of the secondary air duct 23, reducing the air flow supplied by the secondary air duct 23 to the high-speed motor 5 as much as possible, increasing the space of the main air duct 22, providing the main air flow by the main air duct 22, increasing the air inlet of the high-speed motor 5, and the bottom surface of the PCB 3 is relatively flat, almost no disturbance is caused to the air flow, ensuring the smooth air flow, avoiding the generation of turbulent flow, reducing the wind noise, providing the air flow of sufficient wind volume and wind pressure for the high-speed motor 5, and avoiding the unnecessary noise generated by the unstable air flow of the high-speed motor 5.
The inner air duct shell 2 is provided with an eccentric chamfer 24 at the joint of the secondary air inlet duct 23 and the noise reduction honeycomb net 4, and the eccentric chamfer 24 is folded and inclined from the secondary air inlet duct 23 to the noise reduction honeycomb net 4. The inner air duct shell 2 is provided with the eccentric chamfer 24 at one side of the secondary air inlet duct 23, and guides and transits the air flow of the secondary air inlet duct 23 to the noise reduction honeycomb net 4, so that the air flow of the secondary air inlet duct 23 has a converging trend to the eccentric chamfer 24, and the gradual reduction of the space during convergence can reduce the influence of the disturbed air flow of electronic elements, and can also avoid the turbulence of the air flow at corners caused by the large space at the joint position.
As shown in fig. 8, the air intake duct module of the noise reduction blower further includes an air intake rear cover 7, the air intake rear cover 7 is provided with air intake meshes 71, the air intake rear cover 7 is connected to the rear end of the inner duct housing 2, the air intake meshes 71 are aligned with the air intake 21 of the inner duct housing 2, and the air intake area of the air intake 21 covers the air intake area of the air intake meshes 71.
As shown in fig. 9, the front of the original air inlet rear cover 7 is provided with a plurality of rows of through holes 73 more than the air inlet rear cover 7 in the utility model, so that the air inlet area of the original air inlet rear cover 7 is larger than the air inlet area of the air inlet 21 of the inner air duct shell 2, when air is inlet, part of air flows flow flows in from the positions of the plurality of rows of through holes 73, the flowing direction is opposite to the flowing direction of the air flow in the inner air duct shell 2, when the air flows cross the air inlet 21 of the inner air duct shell 2, the air flow flowing into the inner air duct shell 2 is turned back again, and the excessive turned back air flows bypass the inner wall of the inner air duct shell to form gap air inlet, disturb the flowing direction of the air inlet 21 and generate redundant wind noise. According to the utility model, the original positions of the multiple rows of through holes 73 of the air inlet rear cover 7 are designed into a blind hole 72 structure, so that the generation of the returning air flow is blocked, namely, the air inlet area of the air inlet 21 of the inner air channel shell 2 covers the air inlet area of the air inlet mesh 71 of the air inlet rear cover 7, the phenomenon that the air flow flowing through the air inlet mesh 71 at the upper half part of the air inlet rear cover 7 passes through the inner wall to form clearance air inlet is avoided, and the generation of wind noise is reduced.
As shown in fig. 1 to 3, the air intake duct module of the noise reduction blower further includes a filter screen 8, the filter screen 8 is disposed on the air intake rear cover 7, and the filter screen 8 is located between the air intake 21 and the air intake mesh 71. The filter screen 8 filters the air flowing into the inner air duct shell 2, so that dust and impurities are prevented from entering the inner air duct shell 2, and the operation of the PCB 3, the high-speed motor 5 and the heater 6 is prevented from being influenced.
The air inlet channel module of the noise reduction blower further comprises a control key 31, the control key 31 is arranged outside the inner channel shell 2, the main body shell 1 is provided with a control hole site 11, the control hole site 11 is aligned with the control key 31, and the control key 31 is connected with the PCB 3. The control key 31 is arranged outside the inner air duct shell 2, so that occupation of the inner space is reduced, air flow of the air duct is not influenced, and the control key is only in butt joint with the PCB 3 through a conductive control wire. The control key 31 passes through the control hole site 11, and a user can conveniently control and operate the main body shell 1.
The air inlet duct module of the noise reduction blower further comprises an air outlet adapter 9, one end of the air outlet adapter 9 is connected with the front end of the inner duct shell 2, the other end of the air outlet adapter 9 is externally connected with an air outlet guide piece, and the air outlet adapter 9 is provided with an air outlet through hole 91. The air outlet adapter 9 is provided with an air guide head 92 on one side close to the inner air duct shell 2, and the generated air flow is guided to the air outlet through hole 91 and is butt-jointed and conveyed to the air outlet air guide piece. The opposite side of air-out adaptor 9 is equipped with the draw-in groove position, can be used to with the butt joint of air-out wind-guiding spare, and the air-out wind-guiding spare can be according to the structure of user demand design different shapes, as long as play the wind-guiding can, only need set up the buckle structure that is used with air-out adaptor 9 butt joint in the butt joint department of air-out wind-guiding spare can, certainly not be limited to buckle structure, also can be other butt joint structures.
The working principle of the air inlet duct module of the whole noise reduction blower is as follows:
the high-speed motor 5 is operated to start through the control key 31, the high-speed motor 5 drives the fan blade to rotate, so that the air inlet of the high-speed motor 5 forms low pressure, at the moment, the air outside the air inlet duct module flows into the air inlet mesh 71 of the air inlet rear cover 7, the air enters the air inlet 21 of the inner duct shell 2 after being filtered by the filter screen 8, and the air inlet mesh 71 has a coverage area smaller than that of the air inlet 21 of the inner duct shell 2, so that turbulence is avoided, and the noise reduction effect is achieved at the air inlet 21; the air flowing in from one side of the main air inlet duct 22 directly flows to the noise reduction honeycomb net 4 through the duct, and after the air flowing in from one side of the secondary air inlet duct 23 passes through the duct, the air is converged to the noise reduction honeycomb net 4 under the guidance of the eccentric chamfer 24 and is converged with the air of the main air inlet duct 22, and the influence of disturbing air flow caused by electronic elements in the secondary air inlet duct 23 is reduced by the eccentric chamfer 24, so that the converged air flow is more stable, and the wind noise formed in the noise reduction honeycomb net is reduced; the converged air flow is converged through the concave arc surface 43 of the concave honeycomb net 42 to increase the air quantity, and after preliminary rectification, the air flow is further rectified through the plane honeycomb net 41 and then enters the high-speed motor 5, and after the air flow is rectified and converged through the noise reduction honeycomb net 4 to increase the air quantity, the air inlet quantity and the air flow stability of the high-speed motor 5 are improved, and the noise reduction effect is further achieved; the high-speed motor 5 outputs air flow through the fan blades, and after being heated by the heater 6, the air is blown to hair through the air-out air guide piece which is in butt joint with the air-out adapter 9.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (10)
1. The utility model provides an air inlet wind channel module of hair-dryer of making an uproar falls, its characterized in that includes interior wind channel casing, PCB board, the honeycomb net of making an uproar falls, high-speed motor, heater, along the flow direction in wind channel, PCB board, the honeycomb net of making an uproar falls, high-speed motor, heater are installed in proper order inside the wind channel casing, the front end and the rear end of interior wind channel casing are equipped with air outlet and air intake respectively.
2. The air inlet duct module of the noise reduction blower according to claim 1, wherein the noise reduction honeycomb net comprises a planar honeycomb net, one side of the planar honeycomb net is attached to an air inlet of the high-speed motor, and the other side of the planar honeycomb net faces the PCB.
3. The air inlet duct module of the noise reduction blower according to claim 1, wherein the noise reduction honeycomb net comprises a concave honeycomb net, one side of the concave honeycomb net is a plane, the other side of the concave honeycomb net is a concave arc extending from the edge to the center, one side of the plane of the concave honeycomb net faces an air inlet of the high-speed motor, and one side of the concave arc of the concave honeycomb net faces the PCB board.
4. The air inlet duct module of the noise reduction blower according to claim 3, wherein the noise reduction honeycomb net further comprises a planar honeycomb net, one side of the planar honeycomb net is attached to an air inlet of the high-speed motor, the other side of the planar honeycomb net faces to one planar side of the concave honeycomb net, and one side of a concave arc of the concave honeycomb net faces to the PCB.
5. The air inlet duct module of the noise reduction blower according to claim 1, wherein the PCB board is eccentrically connected inside the inner duct housing, the board surface of the PCB board is taken as a boundary, the bottom surface of the PCB board and the inner duct housing form a main air inlet duct, the top surface of the PCB board containing the electronic component and the inner duct housing form a secondary air inlet duct, and the main air inlet duct and the secondary air inlet duct are converged at the noise reduction honeycomb net.
6. The air intake duct module of the noise reduction blower of claim 5, wherein the inner duct housing is provided with an eccentric chamfer at the junction of the secondary air intake duct and the noise reduction honeycomb net, and the eccentric chamfer is inclined from the secondary air intake duct toward the noise reduction honeycomb net.
7. The air intake duct module of the noise reduction blower of claim 1, further comprising an air intake rear cover, wherein the air intake rear cover is provided with air intake meshes, the air intake rear cover is connected to the rear end of the inner duct housing, the air intake meshes are aligned with the air intake of the inner duct housing, and the air intake area of the air intake covers the air intake area of the air intake meshes.
8. The air intake duct module of the noise reduction blower of claim 7, further comprising a filter screen disposed on the air intake rear cover, the filter screen being positioned between the air intake and the air intake mesh.
9. The air inlet duct module of the noise reduction blower according to claim 1, further comprising a main body shell and a control key, wherein the control key is arranged outside the inner duct shell, the main body shell is connected outside the inner duct shell, the main body shell is provided with a control hole site, the control hole site is aligned with the control key, and the control key is connected with the PCB.
10. The air inlet duct module of the noise reduction blower according to claim 1, further comprising an air outlet adaptor, wherein one end of the air outlet adaptor is connected to the front end of the inner duct housing, the other end of the air outlet adaptor is externally connected with an air outlet air guide member, and the air outlet adaptor is provided with an air outlet through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322078181.7U CN220212216U (en) | 2023-08-02 | 2023-08-02 | Air inlet duct module of noise reduction blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322078181.7U CN220212216U (en) | 2023-08-02 | 2023-08-02 | Air inlet duct module of noise reduction blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220212216U true CN220212216U (en) | 2023-12-22 |
Family
ID=89199094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322078181.7U Active CN220212216U (en) | 2023-08-02 | 2023-08-02 | Air inlet duct module of noise reduction blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220212216U (en) |
-
2023
- 2023-08-02 CN CN202322078181.7U patent/CN220212216U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000, Building 13A, 102, 202, 402, Lantian Science and Technology Park, Di Tang Road, Shasi Community, Shajing Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Zhongqu Motor Co.,Ltd. Country or region after: China Address before: 518000 4th floor, building 13a, building 1-16, Shaer Industrial Park, Ditang Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: CHINA DRIVE MOTORS (SHENZHEN) Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |