CN106901402B - Electronic atomization device - Google Patents
Electronic atomization device Download PDFInfo
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- CN106901402B CN106901402B CN201710091628.0A CN201710091628A CN106901402B CN 106901402 B CN106901402 B CN 106901402B CN 201710091628 A CN201710091628 A CN 201710091628A CN 106901402 B CN106901402 B CN 106901402B
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- electrode
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- atomizing
- power supply
- atomizer
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Abstract
The invention relates to an electronic atomization device which comprises an atomizer and a power supply device. Be equipped with in power supply unit's the adapter sleeve and be suitable for atomizing core male installation cavity, atomizing core inserts the installation intracavity back of adapter sleeve, atomizing core and one of them part of electric connector form the electricity and connect, because another part and the adapter sleeve of electric connector form sealing connection, keep apart installation cavity and power supply unit lower part electrode and circuit part, the tobacco tar seepage in the atomizer is collected in the installation cavity after, and can not further permeate power supply unit's electrode and circuit part, avoid the oil leakage to cause power supply unit's electrical part short circuit. The end face of the electrode facing the atomizing core is covered with an oil-proof breathable film, so that smoke oil leaked from the air guide channel is further blocked, and the electrode is protected. This electron atomizing device can effectively avoid the tobacco tar seepage to lead to the problem of power supply unit's electrical part short circuit, and in the grease proofing while of reality, can satisfy the required air current of atomizer work again and effectively pass through.
Description
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to an electronic atomization device.
Background
The electronic atomization device, also called an electronic cigarette, is a novel electronic product simulating a cigarette, and has the same appearance, smoke, taste and sensation as the cigarette. Electronic atomization device generally comprises power supply unit and atomizer, thereby power supply unit is connected with the atomizing core electricity of atomizer and provides the electric energy for the atomizer, and the atomizer becomes the tobacco tar atomizing steam and lets the user suck. The atomizing core of traditional electronic atomization device generally comprises oil guide and the heating element who twines on oil guide, and oil guide is horizontal in the tobacco tar chamber in the atomizer, and the tobacco tar in the tobacco tar chamber permeates each atomization point from oil guide's both ends. However, if the electronic atomizer is left unused for a long period of time (e.g., more than 48 hours), the tobacco tar that has permeated into the oil guide from the tobacco tar chamber is likely to leak to the power connector connected to the atomizer, causing a short circuit of the electric device of the power supply apparatus.
Disclosure of Invention
in view of this, there is a need for an electronic atomizer device that effectively avoids shorting of the electrical components of the power supply device.
An electronic atomization device comprises an atomizer and a power supply device;
the atomizer comprises an oil storage assembly and an atomizing core, wherein an atomizing cavity is arranged in the oil storage assembly, and the atomizing core is positioned in the atomizing cavity;
the power supply device comprises a connecting sleeve, an electric connector and an electrode;
An installation cavity suitable for the atomization core to be inserted is arranged in the connecting sleeve;
The electric connecting piece is positioned in the connecting sleeve, one part of the electric connecting piece is accommodated in the mounting cavity and is electrically connected with the atomizing core, the other part of the electric connecting piece is in sealing connection with the connecting sleeve, and the electric connecting piece is provided with an air guide channel communicated with the atomizing cavity;
The electrode sets up in the air guide passageway and with electric connector forms the electricity and connects, be equipped with well through-hole in the electrode, well through-hole the air guide passageway and the atomizing chamber air current switches on, just the electrode orientation the terminal surface of atomizing core coats and is stamped grease proofing ventilated membrane, grease proofing ventilated membrane seals at least well through-hole.
in one embodiment, the electric connector comprises a connecting part and a fixing part, the connecting part is located in the installation cavity and electrically connected with the atomizing core, the connecting part shrinks inwards from one end of the fixing part, an insulating ring is sleeved on the outer side of the fixing part, and the fixing part is connected with the connecting sleeve in a sealing manner through the insulating ring.
In one embodiment, be equipped with on the connecting portion with the communicating air guide hole in atomizing chamber, be equipped with fixed chamber in the fixed part, the air guide hole with fixed chamber intercommunication forms the air guide channel, fixed chamber with be provided with the step portion on the inner wall of air guide hole junction, the electrode adaptation is arranged in fixed intracavity, grease proofing ventilated membrane be located the step portion with between the electrode.
In one embodiment, the connecting portion is in a conical shape, the fixing portion is in a cylindrical shape, and the connecting portion is convexly disposed in the atomizing chamber.
In one embodiment, an oil discharge hole communicated with the installation cavity is formed in the side wall of the connecting sleeve.
In one embodiment, an exhaust groove is formed in the outer wall of the connecting sleeve, and the exhaust groove is communicated with the oil drain hole.
In one embodiment, the connection sleeve is a tubular structure, and the exhaust groove extends from one end of the oil drain hole in the axial direction on the outer wall of the connection sleeve.
In one embodiment, the oil storage assembly is provided with a plug-in part, and when the atomizing core is inserted into the mounting cavity, the plug-in part is sleeved on the outer wall of the connecting sleeve.
In one embodiment, the electrode comprises a ring part and a convex column connected with the ring part, the middle through hole is formed in the ring part, the ring part is suitable for being inserted into the air guide channel, the end face, far away from the convex column, of the ring part is covered with the oil-proof breathable film, and the extension of the convex column is electrically connected with an external power supply.
In one embodiment, the oil storage assembly is provided with an oil guide channel communicated with the atomization cavity.
In the electronic atomization device, the connecting sleeve of the power supply device is internally provided with the installation cavity suitable for the atomization core to be inserted, the electric connecting piece is positioned in the connecting sleeve, one part of the electric connecting piece is positioned in the installation cavity, the other part of the electric connecting piece is in sealed connection with the connecting sleeve, the electric connecting piece is internally provided with the air guide channel communicated with the atomization cavity, and the electrode is arranged in the air guide channel and is electrically connected with the electric connecting piece. After the atomizing core is inserted into the mounting cavity of the connecting sleeve, the atomizing core is electrically connected with the electric connecting piece, the other part of the electric connecting piece is hermetically connected with the connecting sleeve, the mounting cavity is isolated from the lower electrode of the power supply device and the circuit part, smoke oil in the atomizer is collected in the mounting cavity after leaking, the smoke oil cannot further permeate into the electrode and the circuit part of the power supply device, and short circuit of an electric device of the power supply device caused by oil leakage is avoided. The electrode has the grease proofing ventilated membrane towards the terminal surface of atomizing core coats, and grease proofing ventilated membrane makes the gas molecule can pass through, and the liquid molecule can not pass through, has further kept off the tobacco tar of seepage from the air guide passageway, the protection electrode. The electronic atomization device of this kind of structure can effectively avoid the tobacco tar seepage to lead to the problem of power supply unit's electrical part short circuit, and in the oilproof while of reality, can satisfy the required air current of atomizer work effectively again and pass through.
Drawings
FIG. 1 is a schematic structural diagram of an electronic atomizer according to an embodiment;
FIG. 2 is a cross-sectional view of the electronic atomizer of FIG. 1 taken in one direction;
FIG. 3 is a schematic structural diagram of a power supply apparatus according to an embodiment;
Fig. 4 is a sectional view of the power supply device of fig. 3 in one direction;
FIG. 5 is an enlarged view of a portion of FIG. 4 at V;
FIG. 6 is a cross-sectional view of a portion of the power supply of FIG. 3;
Fig. 7 is a schematic structural view of a connecting sleeve according to an embodiment;
FIG. 8 is a schematic diagram of an electrical connector according to one embodiment;
FIG. 9 is a cross-sectional view of the electrical connector of FIG. 8 in one direction;
FIG. 10 is a schematic view of an oil resistant breathable film according to one embodiment;
FIG. 11 is a schematic diagram of an electrode configuration according to one embodiment;
fig. 12 is a sectional view of the electrode in fig. 11 in one direction.
Detailed Description
In order to facilitate understanding of the invention, the invention is described in further detail below, mainly with reference to specific drawings and specific examples.
Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
referring to fig. 1 and 2, an electronic atomizer 10 according to an embodiment includes an atomizer 100 and a power supply device 200. The atomizer 100 and the power supply device 200 can be detachably connected, such as by plugging or screwing, and the power supply device 200 is used for supplying power to the atomizer 100, so as to heat and atomize the tobacco tar in the atomizer 100 into atomized steam. The atomizer 100 and the power supply device 200 are combined to form the pen-shaped or cylindrical electronic atomizer 10.
The atomizer 100 comprises an oil storage assembly 110 and an atomizing core 120, wherein an atomizing cavity 101 is arranged in the oil storage assembly 110, and the atomizing core 120 is located in the atomizing cavity 101. In this embodiment, the oil storage assembly 110 is provided with an oil guide channel communicated with the atomizing chamber 101, so that the tobacco tar can be continuously guided into the atomizing core 120, and the problem of dry burning is avoided.
Referring to fig. 3 and 4, in one embodiment, the power supply device 200 includes a connecting sleeve 210, an electrical connector 220, and an electrode 230. The connecting sleeve 210 is provided with a mounting cavity 201 suitable for inserting the atomizing core 120. When in use, the atomizing core 120 of the atomizer 100 is inserted into the mounting cavity 201, and the power supply device 200 supplies power to the atomizer 100.
Referring to fig. 5 and 6, the electrical connector 220 is located in the connecting sleeve 210, and a portion of the electrical connector 220 is located in the mounting cavity 201 to electrically connect to the atomizing core 120. Another part of the electrical connector 220 forms a sealed connection with the connection sleeve 210. An air guide channel 203 communicated with the atomizing chamber 101 is arranged in the electric connecting piece 220. The electrode 230 is arranged in the air guide channel 203 and is electrically connected with the electric connecting piece 220, the middle through hole 205 is arranged in the electrode 230, and the middle through hole 205, the air guide channel 203 and the atomizing chamber 101 are in air flow communication. The end face of the electrode 230 facing the atomizing core 120 is covered with an oil-proof breathable film 240, and the oil-proof breathable film 240 can sufficiently cover the middle through hole 205.
in this embodiment, the oil storage assembly 110 of the atomizer 100 is provided with the insertion portion 111, and when the atomizing core 120 is inserted into the mounting cavity 201, the insertion portion 111 is sleeved on the outer wall of the connecting sleeve 210, so that the clamping connection is convenient to mount.
After the atomizing core 120 is inserted into the mounting cavity 201 of the connecting sleeve 210, the atomizing core 120 is electrically connected with one part of the electrical connector 220, and because the other part of the electrical connector 220 is hermetically connected with the connecting sleeve 210, the mounting cavity 201 is isolated from the lower electrode and the circuit part of the power supply device 200, the smoke in the atomizer 100 is collected in the mounting cavity 201 after leakage, and cannot further permeate into the electrode 230 and the circuit part of the power supply device 200, so that short circuit of an electrical device of the power supply device 200 caused by oil leakage is avoided. The end face of the electrode 230 facing the atomizing core 120 is covered with an oil-proof breathable film 240, the oil-proof breathable film 240 enables gas molecules to pass through, and liquid molecules cannot pass through, so that smoke oil leaked from the air guide channel 203 is further blocked, and the electrode is protected. Therefore, the electronic atomization device 10 with the structure can effectively avoid the problem that the smoke oil leaks to cause short circuit of the electric devices of the power supply device 200. The air flow of the middle through hole 205, the air guide channel 203 and the atomizing cavity 101 in the electrode 230 is conducted, so that the oil can be prevented in reality, and meanwhile, the air flow required by the operation of the atomizer 100 can effectively pass through.
in one embodiment, referring to fig. 7, the connection sleeve 210 is a tubular structure, and an oil drain hole 211 communicating with the installation cavity 201 is formed in a side wall of the connection sleeve 210. When the soot in the atomizer 100 leaks into the power supply device 200, the leaked soot is collected in the installation cavity 201 and discharged through the oil discharge hole 211 due to the oil blocking function of the electrical connector 220. An exhaust groove 213 is formed on the outer wall of the connection sleeve 210, and the exhaust groove 213 is communicated with the oil drain hole 211. The exhaust groove 213 forms an air flow channel with the installation cavity 201 in the connection sleeve 210 through the oil discharge hole 211, so that the balance of the internal and external air pressures is formed. When the atomizer 100 is connected with the power supply device 200 in a plug-in manner, the problem that the smoke in the mounting cavity 201 is directly injected outwards through the oil drain hole 211 due to the downward negative pressure can be prevented.
In one embodiment, the exhaust groove 213 extends from one end of the oil exhaust hole 211 on the outer wall of the connecting sleeve 210 along the axial direction, so as to form a longitudinal exhaust groove, and when the atomizer 100 is connected with the power supply device 200 in an opposite insertion manner, a buffer space is formed through the exhaust groove 213, thereby preventing the smoke from being directly injected outwards. The number of oil drain holes 223 may be 1, 2, 3, 4, 5 … …; the number of the exhaust grooves 213 matches the number of the oil drain holes 223.
Referring to fig. 8 and 9, the electrical connector 220 includes a connecting portion 221 and a fixing portion 223, the connecting portion 221 is located in the mounting cavity 201 to electrically connect the atomizing core 120, the connecting portion 221 is inwardly contracted from one end of the fixing portion 223, an insulating ring 225 is sleeved outside the fixing portion 223, and the fixing portion 223 forms a sealing connection with the connecting sleeve 210 through the insulating ring 225. In the connecting sleeve 210, the bottom of the mounting cavity 201 is sealed by the insulating ring 225 sleeved outside the fixing portion 223, so as to prevent the oil smoke from leaking to the bottom.
in one embodiment, the connecting portion 221 is inwardly shrunk from one end of the fixing portion 223 to form the funnel-shaped electrical connector 220. For example, the connecting portion 221 has a tapered shape, the fixing portion 223 has a cylindrical shape, and the connecting portion 221 is protruded into the atomizing chamber 201. The smoke oil leaked from the atomizer 100 can be collected into the mounting cavity 201 from the outer wall of the connecting portion 221, so that the smoke oil is prevented from leaking to the bottom to cause short circuit of the electric devices of the power supply device 200. And the cylindrical fixing portion 223 is sleeved in the connecting sleeve 210 to seal the bottom of the mounting cavity 201.
Referring to fig. 5 and 6 again, the connecting portion 221 is provided with an air vent 2001 communicating with the atomizing chamber 201, and the fixing portion 223 is provided with a fixing chamber 2003 therein. The air guide hole 2001 communicates with the fixed chamber 2003 to form an air guide passage 203. A stepped portion 2005 is provided on an inner wall of a junction of the fixing chamber 2003 and the air vent 2001. The electrode 230 is fittingly arranged in the fixing cavity 2003, and the oil-proof breathable film 240 is located between the step portion 2005 and the electrode 230. Referring to fig. 10, the structure of the oil-proof air-permeable membrane 240 can be seen, in this embodiment, the oil-proof air-permeable membrane 240 is circular. The oil-proof gas-permeable membrane 240 covers the through hole 205 of the electrode 230, and the oil-proof gas-permeable membrane 240 allows gas molecules to pass through, but prevents liquid molecules from passing through, thereby preventing the smoke leakage from causing short circuit of the electric device of the power supply device 200. After the electrode 230 is fittingly arranged in the fixed cavity 2003, the middle through hole 205, the air guide channel 203 and the atomizing cavity 101 in the electrode 230 are communicated in air flow, so that the oil is prevented in reality, and meanwhile, the air flow required by the work of the atomizer 100 can effectively pass through.
Referring to fig. 11 and 12, the electrode 230 includes a ring 231 and a convex pillar 233 connected to the ring 231, the ring 231 has a central through hole 205 therein, the ring 231 is inserted into the air guide channel 203, an end surface of the ring 231 away from the convex pillar 233 is covered with an oil-proof air-permeable film 240, and the convex pillar 233 is electrically connected to an external power source. In use, referring to fig. 2, the connection sleeve 210 is inserted into the upper end of the housing of the power supply device 200, and the battery 250 is disposed in the housing. The positive electrode of the battery 250 is electrically connected with the atomizing core 120 through the electrode post 233 and the electrical connector 220. The negative electrode of the battery 250 is electrically connected to the connection sleeve 210 through the housing 210.
in the electronic atomization device 10, the bottom of the electrical connector 220 is hermetically connected with the connecting sleeve 210, so as to isolate the mounting cavity 201 from the lower electrode and the circuit part of the power supply device 200. The soot in the atomizer 100 is leaked and collected in the installation cavity 201, and does not further penetrate into the electrode 230 and the circuit part of the power supply device 200, so as to prevent the electrical parts of the power supply device 200 from being short-circuited due to the leaked soot. The end face of the electrode 230 facing the atomizing core 120 is covered with an oil-proof breathable film 240, the oil-proof breathable film 240 enables gas molecules to pass through, and liquid molecules cannot pass through, so that smoke oil leaked from the air guide channel 203 is further blocked, and the electrode is protected. The electronic atomization device 10 with the structure can achieve oil resistance and simultaneously can meet the requirement that air flow required by the work of the atomizer 100 effectively passes through.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An electronic atomization device is characterized by comprising an atomizer and a power supply device;
The atomizer comprises an oil storage assembly and an atomizing core, wherein an atomizing cavity is arranged in the oil storage assembly, and the atomizing core is positioned in the atomizing cavity;
The power supply device comprises a connecting sleeve, an electric connector and an electrode;
an installation cavity suitable for the atomization core to be inserted is arranged in the connecting sleeve, and an oil discharge hole communicated with the installation cavity is formed in the side wall of the connecting sleeve;
The electric connecting piece is positioned in the connecting sleeve, one part of the electric connecting piece is accommodated in the mounting cavity and is electrically connected with the atomizing core, the other part of the electric connecting piece is in sealing connection with the connecting sleeve so as to isolate the mounting cavity from the electrode and enable the mounting cavity to collect smoke oil, and the electric connecting piece is provided with an air guide channel communicated with the atomizing cavity;
the electrode sets up in the air guide passageway and with electric connector forms the electricity and connects, be equipped with well through-hole in the electrode, well through-hole the air guide passageway and the atomizing chamber air current switches on, just the electrode orientation the terminal surface of atomizing core coats and is stamped grease proofing ventilated membrane, grease proofing ventilated membrane seals at least well through-hole.
2. The electronic atomization device of claim 1, wherein the electrical connector comprises a connecting portion and a fixing portion, the connecting portion is located in the installation cavity to electrically connect the atomization core, the connecting portion is inwardly contracted from one end of the fixing portion, an insulating ring is sleeved outside the fixing portion, and the fixing portion is in sealing connection with the connecting sleeve through the insulating ring.
3. The electronic atomizing device according to claim 2, wherein the connecting portion is provided with an air vent communicated with the atomizing chamber, the fixing portion is provided with a fixing chamber therein, the air vent is communicated with the fixing chamber to form the air guide channel, a step portion is provided on an inner wall of a junction of the fixing chamber and the air vent, the electrode is adapted to be disposed in the fixing chamber, and the oil-proof air-permeable membrane is disposed between the step portion and the electrode.
4. the electronic atomizer of claim 2, wherein said connecting portion is tapered, said securing portion is cylindrical, and said connecting portion is disposed in said atomizing chamber in a protruding manner.
5. The electronic atomization device of claim 1, wherein an exhaust groove is formed in an outer wall of the connecting sleeve, and the exhaust groove is communicated with the oil drain hole.
6. The electronic atomizing device according to claim 5, wherein the connecting sleeve has a tubular structure, and the air vent extends axially from one end of the oil drain hole on an outer wall of the connecting sleeve.
7. the electronic atomization device of claim 1, wherein the oil storage assembly is provided with an insertion portion, and when the atomization core is inserted into the installation cavity, the insertion portion is sleeved on an outer wall of the connection sleeve.
8. The electronic atomization device of claim 1, wherein the electrode includes a ring portion and a protruding post connected to the ring portion, the ring portion has the through hole therein, the ring portion is adapted to be inserted into the air guide channel, an end surface of the ring portion away from the protruding post is covered with the oil-proof breathable film, and the protruding post is extended and electrically connected to an external power source.
9. The electronic atomizer according to claim 1, wherein said oil reservoir assembly defines an oil-conducting passageway communicating with said atomizing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091628.0A CN106901402B (en) | 2017-02-20 | 2017-02-20 | Electronic atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091628.0A CN106901402B (en) | 2017-02-20 | 2017-02-20 | Electronic atomization device |
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| Publication Number | Publication Date |
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| CN106901402A CN106901402A (en) | 2017-06-30 |
| CN106901402B true CN106901402B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710091628.0A Active CN106901402B (en) | 2017-02-20 | 2017-02-20 | Electronic atomization device |
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| CN (1) | CN106901402B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108669653B (en) * | 2018-07-23 | 2024-04-09 | 重庆中烟工业有限责任公司 | Low-temperature baking atomization smoking set |
| CN111990693B (en) * | 2019-05-27 | 2021-09-03 | 湖南中烟工业有限责任公司 | Ultrasonic atomization core and ultrasonic atomizer |
| CN110236233A (en) * | 2019-06-28 | 2019-09-17 | 杨爽 | Electronic atomization device |
| CN113475772A (en) * | 2020-12-31 | 2021-10-08 | 深圳市吉迩科技有限公司 | Power supply unit and electron cigarette subassembly |
| WO2022141471A1 (en) * | 2020-12-31 | 2022-07-07 | 深圳市吉迩科技有限公司 | Power supply device, atomization device, and electronic cigarette assembly |
| CN216165152U (en) * | 2021-07-06 | 2022-04-05 | 深圳易佳特科技有限公司 | Leak protection oil atomizer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204232297U (en) * | 2014-10-28 | 2015-04-01 | 惠州市吉瑞科技有限公司 | Electronic cigarette |
| CN204191589U (en) * | 2014-11-03 | 2015-03-11 | 深圳市双红汇科技有限公司 | A kind of electronic smoke atomizer of oil-leakage-prevention against short-circuit |
| CN204617063U (en) * | 2015-02-13 | 2015-09-09 | 惠州市吉瑞科技有限公司 | A kind of atomizer |
| CN106263042A (en) * | 2016-09-20 | 2017-01-04 | 云南中烟工业有限责任公司 | A kind of oil-leakage-prevention electronic smoke atomizer |
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- 2017-02-20 CN CN201710091628.0A patent/CN106901402B/en active Active
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Address after: 518000 1b, building 6, saitu digital industrial factory building, 137 Bulan Road, gankeng community, Jihua street, Shenzhen City, Guangdong Province Patentee after: Hengxin Yongji Technology (Shenzhen) Co.,Ltd. Address before: 518112 501, 901, 1001, building 9, China Hisense innovation industry city, No. 3, ganliwu Road, Buji street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HANGSEN STAR TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20211109 Address after: 523690 Room 301, building 2, No.1 Jinqi Road, Fenggang town, Dongguan City, Guangdong Province Patentee after: Hengxin Weiye Technology (Dongguan) Co.,Ltd. Address before: 518000 1b, building 6, saitu digital industrial factory building, 137 Bulan Road, gankeng community, Jihua street, Shenzhen City, Guangdong Province Patentee before: Hengxin Yongji Technology (Shenzhen) Co.,Ltd. |