CN208967188U - A kind of solenoid valve - Google Patents
A kind of solenoid valve Download PDFInfo
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- CN208967188U CN208967188U CN201821681006.XU CN201821681006U CN208967188U CN 208967188 U CN208967188 U CN 208967188U CN 201821681006 U CN201821681006 U CN 201821681006U CN 208967188 U CN208967188 U CN 208967188U
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- valve
- push rod
- valve body
- body structure
- solenoid valve
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Abstract
The utility model provides a kind of solenoid valve, is related to industrial equipment field.Solenoid valve includes shell structure, push rod structure and valve body structure, push rod structure and valve body structure are connect with shell structure, valve body structure has valve port, push rod structure is provided with circular auxiliary section close to one end of valve body structure, auxiliary section and valve body structure form bleed outlet, push rod structure can be moved relative to valve body structure, be gradually become smaller again after becoming larger the diameter of relief port, while auxiliary section being enable gradually to stretch to valve port.In the present invention, the diameter of relief port gradually becomes smaller again after becoming larger, during, auxiliary section gradually cooperates with valve port, so that the flow of solenoid valve is first become larger and gradually becomes smaller again, reduces the oil consumption of solenoid valve, energy-saving and emission-reduction.
Description
Technical field
The utility model relates to industrial equipment fields, in particular to a kind of solenoid valve.
Background technique
Solenoid valve (Electromagnetic valve) is electromagnetically controlled industrial equipment, is for controlling fluid
Automatic foundamental element belongs to actuator, however it is not limited to hydraulic, pneumatic.In industrial control system adjust medium direction,
Flow, speed and other parameters.Solenoid valve can cooperate different circuits to realize expected control, and the precision that controls and
Flexibility can guarantee.There are many kinds of solenoid valves, and different solenoid valves plays a role in the different location of control system, most often
It is check valve, safety valve, directional control valve, speed-regulating valve etc..
The energy consumption of solenoid valve on the market is higher at present.
Utility model content
The purpose of this utility model is to provide a kind of solenoid valves, can reduce energy consumption.
The utility model provides a kind of technical solution:
A kind of solenoid valve includes: shell structure, push rod structure and valve body structure, the push rod structure and the valve body structure
It is connect with the shell structure, the valve body structure has valve port, and the push rod structure is close to one end of the valve body structure
It is provided with circular auxiliary section, the push rod structure can be moved relative to the valve body structure, enable the auxiliary section gradually
The valve port is stretched to, to change the aperture of the valve port.
Further, in the utility model preferred embodiment, the push rod structure includes push rod component and push rod group
Part, the push rod component are mutually supported with the push-rod assembly, and the push rod component is connect with the shell structure, the cooperation
The one end of the push-rod assembly far from the push rod component is arranged in portion.
Further, in the utility model preferred embodiment, the push-rod assembly further includes reply portion, the reply
Portion is arranged between the auxiliary section and the valve body structure, supports respectively with the auxiliary section and the valve body structure.
Further, in the utility model preferred embodiment, the push rod component includes mandril part and coil piece, institute
The one end for stating mandril part stretches in the shell structure, and the other end is supported with the push-rod assembly, and the coil piece is for driving
The mandril part is moved to move with the valve body structure relatively.
Further, in the utility model preferred embodiment, the mandril part includes mandril, iron core and elastic component,
Described mandril one end stretches in the shell structure, and the other end is supported with the push-rod assembly, and the iron core sleeve is set to described
Mandril, the elastic component are sheathed on the mandril, support respectively with the iron core and the push-rod assembly.
Further, in the utility model preferred embodiment, the mandril part further includes guide part, the guide part
It is sheathed on the mandril, and is connect with the shell structure, the guide part is arranged between the elastic component and the push rod,
And it is supported with the elastic component.
Further, in the utility model preferred embodiment, the valve body structure includes valve seat, valve pocket and spool,
The valve port is arranged on the valve pocket, and the valve seat is connect with the valve pocket, and the spool is arranged in the valve pocket, and can
It is slided relative to the valve pocket.
It further, include line department and straight line portion, institute inside the valve pocket in the utility model preferred embodiment
It states straight line portion and the line department is connected with each other, the straight line portion is arranged close to the valve port, and the line department is close to the top
Rod structure setting, it is intracavitary that the type that the straight line portion and the line department are formed is arranged in the auxiliary section.
Further, in the utility model preferred embodiment, the valve body structure further includes resilient portion, the rebound
Portion is arranged between the valve pocket and the spool, and both ends are supported with the valve pocket and the spool respectively.
Further, in the utility model preferred embodiment, the shell structure includes shell and guide sleeve component, institute
Stating guide sleeve component includes guide sleeve, magnetic shield and guide sleeve, and the guide sleeve is connect with the shell, the guide sleeve, it is described every
Magnetosheath and the guide sleeve are all made of ontology weldering connection.
The beneficial effect of solenoid valve provided by the utility model is: solenoid valve includes shell structure, push rod structure and valve body
Structure, push rod structure and valve body structure are connect with shell structure, and valve body structure has valve port, and push rod structure is close to valve body structure
One end be provided with circular auxiliary section, auxiliary section and valve body structure form bleed outlet, and push rod structure can be relative to valve body structure
Movement, gradually becomes smaller, while auxiliary section being enable gradually to stretch to valve port again after becoming larger the diameter of relief port.
In the present invention, the diameter of relief port gradually becomes smaller again after becoming larger, during, auxiliary section gradually with
Valve port cooperation, makes the flow of solenoid valve first become larger and gradually becomes smaller again, reduce the oil consumption of solenoid valve, energy-saving and emission-reduction.
In the present invention, solenoid valve includes shell structure, push rod structure and valve body structure, is provided on valve body structure
Valve port, push rod structure can be moved relative to valve body structure, and circular auxiliary section is enable gradually to cooperate with valve port, change valve port
Aperture, to change the flow of solenoid valve, to ensure that the working effect of solenoid valve.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of solenoid valve provided by the embodiment of the utility model.
Fig. 2 is the structural schematic diagram of the partial enlargement in Fig. 1 at II of solenoid valve provided by the embodiment of the utility model.
Fig. 3 is the structural schematic diagram of the push rod component of the push rod structure of solenoid valve provided by the embodiment of the utility model.
Fig. 4 is that the structure of the mandril part of the push rod component of the push rod structure of solenoid valve provided by the embodiment of the utility model is shown
It is intended to.
Fig. 5 is the structural schematic diagram of the valve body structure of solenoid valve provided by the embodiment of the utility model.
Icon: 10- solenoid valve；100- push rod structure；The auxiliary section 110-；120- push-rod assembly；122- push rod；124- is replied
Portion；130- push rod component；132- mandril part；1322- mandril；1324- iron core；1326- elastic component；1328- guide part；134- line
Collar member；1342- line ladle cover；1344- coil holder；200- valve body structure；210- valve seat；212- valve seat mouth；220- valve pocket；222- valve
Mouthful；224- bleed outlet；226- through-hole；The straight line portion 228-；229- line department；230- spool；232- spool mouth；240- valve chamber；
250- resilient portion；300- shell structure；310- shell；320- guide sleeve component；322- guide sleeve；324- magnetic shield；326- guide sleeve.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put or those skilled in the art usually understand
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified sets
Standby or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment
Referring to Fig. 1, present embodiments providing a kind of solenoid valve 10, solenoid valve 10 provided in this embodiment can lower energy
Consumption.
Fig. 1 and Fig. 2 is please referred to, in the present embodiment, solenoid valve 10 includes: shell structure 300, push rod structure 100 and valve
Body structure 200, push rod structure 100 and valve body structure 200 are connect with shell structure 300, and valve body structure 200 has valve port 222,
Push rod structure 100 is provided with circular auxiliary section 110 close to one end of valve body structure 200, and push rod structure 100 can be relative to valve body
Structure 200 moves, and so that auxiliary section 110 is gradually stretched to valve port 222, to change the aperture of valve port 222.
In the present embodiment, solenoid valve 10 includes shell structure 300, push rod structure 100 and valve body structure 200, valve body knot
Valve port 222 is provided on structure 200, push rod structure 100 can be moved relative to valve body structure 200, enable circular auxiliary section 110
It is enough gradually to cooperate with valve port 222, change the aperture of valve port 222, to change the flow of solenoid valve 10, to ensure that solenoid valve
10 working effect.
In the present embodiment, during moving to valve port 222, circular auxiliary section 110 is gradually protruded into for auxiliary section 110
Into valve port 222, gradually decrease the aperture of valve port 222, when the side wall of auxiliary section 110 and valve port 222 supports, valve port 222
It closes.
In the present embodiment, with being combined into spherical shape.
In the present embodiment, push rod structure 100 include push rod component 130 and push-rod assembly 120, push rod component 130 with push away
Bar assembly 120 mutually supports, and push rod component 130 is connect with shell structure 300, and the setting of auxiliary section 110 is separate in push-rod assembly 120
One end of push rod component 130.
In the present embodiment, push rod component 130 drives push-rod assembly 120 to move relative to shell structure 300, makes mandril group
Part 130 is moved to the direction close to valve body structure 200, and auxiliary section 110 is enable to cooperate with valve port 222.
In the present embodiment, push-rod assembly 120 further includes push rod 122, and one end and the push rod component 130 of push rod 122 support,
The other end is connect with auxiliary section 110, and auxiliary section 110 forms bleed outlet 224 close to one end of push rod 122 and valve body structure 200.
In the present embodiment, when push rod 122 is in initial position, auxiliary section 110 is contacted with valve body structure 200, bleed outlet
224 apertures are smaller.When being moved under the action of push rod 122 is in push rod component 130 to the direction close to valve port 222, auxiliary section 110
It is gradually distance from valve body structure 200, is gradually increased the aperture of bleed outlet 224, oil is enable largely to release by bleed outlet 224.
In the present embodiment, push-rod assembly 120 further includes reply portion 124, and reply portion 124 is arranged in auxiliary section 110 and valve
Between body structure 200, supported respectively with auxiliary section 110 and valve body structure 200.
In the present embodiment, when solenoid valve 10 completes work, when push rod component 130 runs out of steam, push rod 122 is in reply portion
It is resetted under the action of 124 restoring force.
In the present embodiment, reply portion 124 is spring.
It should be noted that in the present embodiment, reply portion 124 is spring, and but not limited to this, in the utility model
In other embodiments, reply portion 124 can also be other flexible components, the scheme being equal with the present embodiment, Neng Gouda
It is within the protection scope of the present utility model to the effect of the present embodiment.
Referring to Fig. 3, in the present embodiment, push rod component 130 includes mandril part 132 and coil piece 134, mandril part 132
One end stretch in shell structure 300, the other end is supported with push-rod assembly 120, and coil piece 134 is for driving mandril part 132
It is opposite to be moved with valve body structure 200.
In the present embodiment, after coil piece 134 is powered, driving mandril part 132 is moved to the direction close to push rod 122,
It moves auxiliary section 110 to the direction close to valve port 222, so that auxiliary section 110 and valve port 222 be made to cooperate, changes valve port 222
Aperture.
Coil piece 134 includes line ladle cover 1342 and coil holder 1344, and line ladle cover 1342 is connect with shell structure 300, and with
Shell structure 300 forms accommodating chamber, and coil holder 1344 is arranged in accommodating chamber.
Referring to Fig. 4, in the present embodiment, mandril part 132 includes mandril 1322, iron core 1324 and elastic component 1326, top
1322 one end of bar stretches in shell structure 300, and the other end is supported with push-rod assembly 120, and iron core 1324 is sheathed on mandril 1322,
Elastic component 1326 is sheathed on mandril 1322, supports respectively with iron core 1324 and push-rod assembly 120.
In the present embodiment, the one end of mandril 1322 far from shell structure 300 is supported with push rod 122.When in coil piece 134
After electricity, iron core 1324 drives mandril 1322 to move to the direction close to push rod 122 under the action of coil piece 134, to make to push away
Bar 122 pushes auxiliary section 110 to move to the direction close to valve port 222, to change the aperture of valve port 222.
In the present embodiment, mandril part 132 further includes guide part 1328, and guide part 1328 is sheathed on mandril 1322, and with
Shell structure 300 connects, and the setting of guide part 1328 supports between elastic component 1326 and push rod 122, and with elastic component 1326.
In the present embodiment, one end of guide part 1328 is supported with elastic component 1326, and the other end and valve body structure 200 connect
It connects, guide part 1328 enables mandril 1322 to move on the extending direction of shell structure 300, ensure that solenoid valve 10 worked
Stability.
Referring to Fig. 5, in the present embodiment, valve body structure 200 includes valve seat 210, valve pocket 220 and spool 230, valve port
222 are arranged on valve pocket 220, and valve seat 210 is connect with valve pocket 220, and spool 230 is arranged in valve pocket 220, and can be relative to valve pocket
220 slidings.
In the present embodiment, through-hole 226 is provided on the side wall of valve pocket 220, spool 230 is arranged inside valve pocket 220, with
Valve pocket 220 forms valve chamber 240, and the side wall of spool 230 is connect with the side walls of valve pocket 220, seals valve chamber 240.
In the present embodiment, when spool 230 moves to extreme position, i.e. the end face of spool 230 and the end face of valve seat 210 connects
When touching, the side wall of spool 230 is contacted with the side wall of valve pocket 220, is connected to through-hole 226 not always with valve chamber 240, to reach close
Seal the effect of valve chamber 240.
In the present embodiment, spool mouth 232 is provided on spool 230, spool mouth 232 can be connected to valve port 222, valve seat
Valve seat mouth 212 is provided on 210 inside, the inside of valve pocket 220 includes line department 229 and straight line portion 228, and straight line portion 228 is leaned on
Nearly valve port 222 is arranged, and line department 229 is arranged close to push rod component 130, the hole on the direction close to straight line portion 228 of line department 229
Diameter is gradually increased.When coil no power, auxiliary section 110 is located at line department 229, keeps the aperture of bleed outlet 224 smaller, oil from
When valve seat mouth 212 enters, spool 230 moves to the direction close to push rod component 130, makes most under the action of oil pressure
Oil is released from through-hole 226.
After coil is powered, mandril 1322 is moved to the direction close to push rod 122, and auxiliary section 110 is gradually to close to straight line
The direction in portion 228 moves, and becomes larger the diameter of bleed outlet 224, and oil enters push rod by valve port 222 from spool mouth 232
In 122, and it is discharged from bleed outlet 224.Auxiliary section 110 stretches in valve port 222, gradually decreases the aperture of valve port 222, into
Enter to the oil mass in push rod 122 and gradually decrease, the oil mass being discharged from bleed outlet 224 also gradually decreases.
In the present embodiment, one end of push rod 122 is arranged in auxiliary section 110, when push rod 122 is relative to valve body structure 200
In motion process, auxiliary section 110 is first stretched in valve port 222, and the diameter of bleed outlet 224 is gradually increased, and is discharged from bleed outlet 224
Flow be gradually increased.Auxiliary section 110 gradually stretches in valve port 222, is gradually reduced the aperture of valve port 222.Work as bleed outlet
After 224 diameter reaches maximum, bleed outlet 224 is gradually reduced, and the aperture of valve port 222 is persistently reduced.
In the present embodiment, the diameter of bleed outlet 224 is gradually increased gradually decrease again during, auxiliary section 110 is gradually
Cooperate with valve port 222, so that the flow of solenoid valve 10 is first become larger and gradually become smaller again, reduces the oil consumption of solenoid valve 10, energy-saving and emission-reduction.Its
Middle valve body structure 200 is connect with a damper, while can actively adjust the softness and hardness of damper, improves comfort level and peace
Quan Xing.In the present embodiment, valve body structure 200 further includes resilient portion 250, and resilient portion 250 is arranged in valve pocket 220 and spool 230
Between, both ends are supported with valve pocket 220 and spool 230 respectively.
In the present embodiment, after coil is powered, the pressure in valve chamber 240 is gradually increased, and resilient portion 250 is in its restoring force
Under the action of move spool 230 to close to the direction of valve seat 210.
In the present embodiment, shell structure 300 includes shell 310 and guide sleeve component 320, and guide sleeve component 320 includes guiding
Set 322, magnetic shield 324 and guide sleeve 326, guide sleeve 322 are connect with shell 310, guide sleeve 322, magnetic shield 324 and guide sleeve
322 are all made of ontology weldering connection.
In the present embodiment, guide sleeve 322, magnetic shield 324 and guide sleeve 326 can reduce guide sleeve using ontology weldering connection
The process of component 320, to reduce the cost of guide sleeve component 320.
The working principle of solenoid valve 10 provided in this embodiment: when coil no power, auxiliary section 110 is located at line department
At 229, keep the aperture of bleed outlet 224 smaller, when oil enters from valve seat mouth 212, spool 230 is under the action of oil pressure, to close
The direction of push rod component 130 moves, and most oil is made to release from through-hole 226.After coil is powered, mandril 1322 is to close
The direction of push rod 122 moves, and auxiliary section 110 is gradually moved to the direction close to straight line portion 228, make the diameter of bleed outlet 224 by
Gradual change is big, and oil enters in push rod 122 from spool mouth 232 by valve port 222, and is discharged from pressure relief opening.Auxiliary section 110 is protruded into
Into valve port 222, gradually decrease the aperture of valve port 222, the oil mass entered in push rod 122 gradually decreases, from pressure relief opening
The oil mass of discharge also gradually decreases.
In conclusion solenoid valve 10 provided in this embodiment, in the present embodiment, in the present embodiment, bleed outlet 224
Diameter is gradually increased gradually decrease again during, auxiliary section 110 gradually cooperates with valve port 222, keeps the flow of solenoid valve 10 first
Become larger and gradually become smaller again, reduces the oil consumption of solenoid valve 10, energy-saving and emission-reduction.Wherein valve body structure 200 is connect with a damper, simultaneously
The softness and hardness of damper can be actively adjusted, comfort level and safety are improved.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of solenoid valve characterized by comprising shell structure, push rod structure and valve body structure, the push rod structure and institute
It states valve body structure to connect with the shell structure, the valve body structure has valve port, and the push rod structure is close to the valve body
One end of structure is provided with circular auxiliary section, and the auxiliary section and the valve body structure form bleed outlet, the push rod structure
It can move relative to the valve body structure, be gradually become smaller again after becoming larger the diameter of the bleed outlet, while make described match
Conjunction portion can gradually stretch to the valve port.
2. solenoid valve according to claim 1, which is characterized in that the push rod structure includes push rod component and push rod group
Part, the push rod component are mutually supported with the push-rod assembly, and the push rod component is connect with the shell structure, the cooperation
The one end of the push-rod assembly far from the push rod component is arranged in portion.
3. solenoid valve according to claim 2, which is characterized in that the push-rod assembly further includes reply portion, the reply
Portion is arranged between the auxiliary section and the valve body structure, supports respectively with the auxiliary section and the valve body structure.
4. solenoid valve according to claim 2, which is characterized in that the push rod component includes mandril part and coil piece, institute
The one end for stating mandril part stretches in the shell structure, and the other end is supported with the push-rod assembly, and the coil piece is for driving
The mandril part is moved to move with the valve body structure relatively.
5. solenoid valve according to claim 4, which is characterized in that the mandril part includes mandril, iron core and elastic component, institute
It states mandril one end to stretch in the shell structure, the other end is supported with the push-rod assembly, and the iron core sleeve is set to the top
Bar, the elastic component are sheathed on the mandril, support respectively with the iron core and the push-rod assembly.
6. solenoid valve according to claim 5, which is characterized in that the mandril part further includes guide part, the guide part
It is sheathed on the mandril, and is connect with the shell structure, the guide part is arranged between the elastic component and the push rod,
And it is supported with the elastic component.
7. solenoid valve according to claim 1, which is characterized in that the valve body structure includes valve seat, valve pocket and spool, institute
It states valve port to be arranged on the valve pocket, the valve seat is connect with the valve pocket, and the spool is arranged in the valve pocket, and can phase
The valve pocket is slided.
8. solenoid valve according to claim 7, which is characterized in that include line department and straight line portion, institute inside the valve pocket
It states straight line portion and the line department is connected with each other, the straight line portion is arranged close to the valve port, and the line department is close to the top
Rod structure setting, it is intracavitary that the type that the straight line portion and the line department are formed is arranged in the auxiliary section.
9. solenoid valve according to claim 7, which is characterized in that the valve body structure further includes resilient portion, the rebound
Portion is arranged between the valve pocket and the spool, and both ends are supported with the valve pocket and the spool respectively.
10. solenoid valve according to claim 9, which is characterized in that the shell structure includes shell and guide sleeve component, institute
Stating guide sleeve component includes guide sleeve, magnetic shield and guide sleeve, and the guide sleeve is connect with the shell, the guide sleeve, it is described every
Magnetosheath and the guide sleeve are all made of ontology weldering connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821681006.XU CN208967188U (en) | 2018-10-16 | 2018-10-16 | A kind of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821681006.XU CN208967188U (en) | 2018-10-16 | 2018-10-16 | A kind of solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208967188U true CN208967188U (en) | 2019-06-11 |
Family
ID=66758679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821681006.XU Active CN208967188U (en) | 2018-10-16 | 2018-10-16 | A kind of solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208967188U (en) |
-
2018
- 2018-10-16 CN CN201821681006.XU patent/CN208967188U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20191230 Address after: No. 186, Huafeng Road, Jintan Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Changzhou Universal Electronics Co., Ltd. Address before: 213000 No. 186 Huafeng Road, Jintan Economic Development Zone, Jintan District, Changzhou City, Jiangsu Province Patentee before: Huang Xiaowei |