CN107732571B - Electric connector for rail transit vehicle - Google Patents
Electric connector for rail transit vehicle Download PDFInfo
- Publication number
- CN107732571B CN107732571B CN201710791115.0A CN201710791115A CN107732571B CN 107732571 B CN107732571 B CN 107732571B CN 201710791115 A CN201710791115 A CN 201710791115A CN 107732571 B CN107732571 B CN 107732571B
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- CN
- China
- Prior art keywords
- socket
- drag hook
- plug
- rail transit
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 230000002146 bilateral effect Effects 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Abstract
The invention discloses an electric connector for a rail transit vehicle, wherein a plug is provided with a support panel, a socket is provided with a support surface, the plug head of the plug and the socket can be prevented from warping in the process of plugging and closing, the left drag hook component, the right drag hook component, a guide rod and a rocker arm component form a connecting rod operating mechanism, the front and back movement of the left drag hook component and the right drag hook component is realized by operating the rocker arm component, a thick guide sleeve on the plug is smoothly inserted into a thick guide pin on the socket on the corresponding side, the plug can be smoothly plugged with the socket through multiple guide, the matched connecting rod operating mechanism realizes the functions of network control and signal control of the plug pin and the socket of the electric connector, a shielding cable of a multi-network control module is connected with a shell of the socket, a shell is made of metal material, and the shielding is continuous in the use process, the shielding is not interrupted, the structure is ingenious, the operation is convenient, the signal communication of the rail transit vehicle is ensured, and the electric connector has good application prospect.
Description
Technical Field
The invention relates to an electric connector for a rail transit vehicle, and belongs to the technical field of rail transit vehicle components.
Background
At present, in the process of plugging in the plug and the socket of the electric connector for the rail transit vehicle, because the cable needs to be installed in the plug, the gravity effect of the cable and the plug is adopted, before the plug and the socket are contacted, before the thick guiding mechanism does not work, the plug can tilt, and the plug can be smoothly plugged in the socket by means of the hand of people. Because of different individual righting operation methods, the core piece in the plug and the core piece in the socket can be caused, and under the condition of different shafts, the phenomenon of the core piece being inclined at the top or withdrawing a needle is caused, so that signal communication of the rail transit vehicle is interrupted, and the rail transit vehicle is in fault. In addition, the conventional electrical connector can integrate network control and signal control. However, the network control and signal control pins and jacks of the electrical connector cannot be quickly decompressed without a matched operating mechanism.
Disclosure of Invention
The invention aims to solve the problems that the existing electric connector for the rail transit vehicle can smoothly plug in and out with a socket by righting a plug by hands and has no matched operating mechanism, and the network control and signal control functions of the electric connector such as the quick unlocking of pins and jacks are realized. The electric connector for the rail transit vehicle can prevent the plug from warping during the plug and socket plugging process, ensures smooth plug and socket plugging through multiple guidance, ensures that the shell of the socket is connected with the shielding cable of the network control module, is made of metal, is continuously shielded during the use process, has no interruption of shielding, has ingenious structure and convenient operation, ensures signal communication of the rail transit vehicle, and has good application prospect.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an electrical connector for a rail transit vehicle, characterized by: comprises a plug and a socket.
Supporting surfaces are symmetrically arranged on the left side and the right side of the plug, thick guide sleeves are arranged on the supporting surfaces, and lugs extend outwards perpendicularly from the outer edges of the supporting panels;
the left and right sides of the socket are symmetrically provided with a left drag hook component and a right drag hook component, coarse guide pins are arranged above the left drag hook component and the right drag hook component, the coarse guide pins are matched with coarse guide sleeves on the corresponding sides, the left drag hook component and the right drag hook component are matched with lugs on the corresponding sides, the left drag hook component and the right drag hook component are respectively connected with a rocker arm component through guide rods, the rocker arm component spans above the socket, and the left drag hook component, the right drag hook component, the guide rods and the rocker arm component form a connecting rod operating mechanism;
when the plug and the socket are plugged, the rocker arm assembly is operated to move upwards to the upper limit position, the plug is inserted, the lugs are placed into the bearing grooves on the left drag hook assembly and the right drag hook assembly at the corresponding sides, at the moment, the bearing surfaces on the left drag hook assembly and the right drag hook assembly are parallel, gaps exist, the rocker arm assembly is operated to move downwards, the thick guide pin on the socket is smoothly inserted into the thick guide sleeve on the plug at the corresponding side, and the plug and the socket are plugged by multiple guides.
The foregoing electrical connector for rail transit vehicles, characterized in that: the plug is internally provided with a left-right symmetrically arranged fine guide pin, the socket is internally provided with a left-right symmetrically arranged fine guide hole, the fine guide hole is matched with the fine guide pin on the corresponding side in position, after the coarse guide pin on the socket is inserted into the coarse guide sleeve of the plug, the coarse guide rib on the socket is smoothly inserted into the coarse guide groove on the plug, and then the fine guide pin is inserted into the fine guide hole on the corresponding side.
The foregoing electrical connector for rail transit vehicles, characterized in that: the socket is internally integrated with a plurality of signal control contact pairs and a plurality of network control modules, the shells of the plug, the socket and the network control modules are all made of metal materials, and the shell of the socket is connected with the ground of the rail transit vehicle.
The foregoing electrical connector for rail transit vehicles, characterized in that: the shielded cable of the multi-network control module is connected with the housing of the socket.
The foregoing electrical connector for rail transit vehicles, characterized in that: the left drag hook assembly is provided with a safety hook, and after the plug and the socket are inserted in place and the rocker arm assembly is operated to rotate down to the lower limit position, the safety hook automatically hooks the rocker arm to realize the plug and the socket to be inserted and locked.
The foregoing electrical connector for rail transit vehicles, characterized in that: after the plug and the socket are locked, the left drag hook assembly and the right drag hook assembly can realize the anti-drop function of the plug.
The foregoing electrical connector for rail transit vehicles, characterized in that: the supporting surface is parallel to the bearing surfaces on the left drag hook assembly and the right drag hook assembly, and a gap exists, and the range of the gap is between 0.2mm and 0.5 mm.
The beneficial effects of the invention are as follows: the electric connector for the rail transit vehicle is characterized in that the plug is provided with the supporting surface, the socket is provided with the supporting surface, the plug warping head of the plug and the socket can be prevented in the plugging process, smooth plugging is ensured, the left drag hook component, the right drag hook component, the guide rod and the rocker arm component form a connecting rod operating mechanism, the front and back movement of the left drag hook component and the right drag hook component is realized through operating the rocker arm component, the thick guide pin on the socket is smoothly inserted into the thick guide sleeve on the plug on the corresponding side, the plug can be smoothly plugged into the socket, the matched connecting rod operating mechanism realizes the functions of network control of the electric connector and rapid plugging of the signal control pin and the jack, the shielding cable of the network control module is connected with the shell of the socket, the shell is made of metal materials, the shielding is continuous in the use process, the shielding is not interrupted, the structure is ingenious, the operation is convenient, and the signal communication of the rail transit vehicle is ensured, and the electric connector has good application prospect.
Drawings
FIG. 1 is a schematic view of the structure of a plug of the present invention;
fig. 2 is a front view of the plug of the present invention;
FIG. 3 is a schematic view of the structure of the socket of the present invention;
FIG. 4 is an enlarged schematic view of A in FIG. 3;
fig. 5 is a side view of the receptacle of the present invention;
fig. 6 is a schematic diagram of the structure of the plug and socket of the present invention after being plugged.
The meaning of the symbols in the drawings is as follows:
1: a plug; 101: a support surface; 102: a thick guide sleeve; 103: a lug; 104: fine guide pins; 105: a coarse guide groove; 2: a socket; 201: a left retractor assembly; 202: a right retractor assembly; 203: a guide rod; 204: a rocker arm assembly; 205: a support groove; 206: a rough guide pin; 207: fine guide holes; 208: a safety hook; 209: thick guide rib, 210: and (5) a bearing surface.
Detailed Description
The invention will be further described with reference to the drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 5, the electric connector for rail transit vehicles of the present invention comprises a plug 1 and a socket 2;
the left side and the right side of the plug 1 are symmetrically provided with a supporting surface 101, the supporting surface 101 is provided with a thick guide sleeve 102, and the outer edge of the supporting surface 101 is vertically and outwards extended with a lug 103;
the left and right sides of the socket 2 are symmetrically provided with a left drag hook assembly 201 and a right drag hook assembly 202, coarse guide pins 206 are arranged above the left drag hook assembly 201 and the right drag hook assembly 202, the coarse guide pins 206 are matched with the coarse guide sleeves 102 on the corresponding sides, the left drag hook assembly 201 and the right drag hook assembly 202 are matched with lugs 103 on the corresponding sides, bearing surfaces of the left drag hook assembly 201 and the right drag hook assembly 202 are matched with the supporting surface 101, coarse guide ribs 209 are arranged on the socket 2, coarse guide grooves 105 are arranged on the plug 1, and the coarse guide grooves 105 are matched with the coarse guide ribs 209; the left drag hook assembly 201 and the right drag hook assembly 202 are respectively connected with the rocker arm assembly 204 through the guide rod 203, the rocker arm assembly 204 spans over the socket 2, the left drag hook assembly 201, the right drag hook assembly 202, the guide rod 203 and the rocker arm assembly 204 form a connecting rod operating mechanism, and the front and back movement of the left drag hook assembly 201 and the right drag hook assembly 202 is realized through operating the rocker arm assembly 204.
In the electric connector for the rail transit vehicle, as shown in fig. 4, a dotted line is a swinging path of the rocker arm assembly 204, when the plug 1 and the socket 2 are inserted, the rocker arm assembly 204 is operated to be turned to an upper limit position, the plug 1 is inserted, the lugs 103 are sunk into the bearing grooves 205 on the left drag hook assembly 201 and the right drag hook assembly 202 on the corresponding sides, at the moment, the bearing surfaces 101 are parallel to the bearing surfaces on the left drag hook assembly 201 and the right drag hook assembly 202, a gap exists, the rocker arm assembly 204 is operated to be turned down, the thick guide sleeve 102 on the plug 1 is smoothly inserted into the thick guide pin 206 on the socket 2 on the corresponding side, so that the plug 1 and the socket 2 are inserted, and the plug 1 and the socket 2 are inserted, as shown in fig. 6.
Preferably, the plug 1 is internally provided with the fine guide pins 104 which are symmetrically arranged left and right, the socket 2 is internally provided with the fine guide holes 207 which are symmetrically arranged left and right, the fine guide holes 207 are matched with the fine guide pins 104 on the corresponding side, after the coarse guide pins 206 on the socket 2 are smoothly inserted into the coarse guide sleeves 102 on the plug 1 on the corresponding side, the coarse guide ribs 209 on the socket 2 are inserted into the coarse guide grooves 105 of the plug 1, and after coarse guide positioning is realized, the fine guide pins 104 are inserted into the fine guide holes 207 on the corresponding side, so that fine guide positioning is performed again, the core piece top warp or needle withdrawal phenomenon can be effectively prevented, the connection reliability is ensured, and the signal communication quality of rail transit vehicles is ensured.
Preferably, the socket 2 is internally integrated with a plurality of signal control contact pairs and a plurality of network control modules, the shells of the plug 1, the socket 2 and the plurality of network control modules are all made of metal materials, the shell of the socket 2 is connected with the ground of the rail transit vehicle, the socket is internally integrated with signal control and network control functions, and the shell of the plurality of network control modules can be connected with the shell of the socket 2 through a shielding cable, so that shielding is not interrupted in the use process, and the communication quality is ensured.
Preferably, the left hook assembly 201 is provided with a safety hook 208, and after the plug 1 and the socket 2 are plugged in place and the rocker arm assembly 204 is operated to rotate down to the lower limit position, the safety hook 208 automatically hooks the rocker arm assembly 204 to realize plugging and locking of the plug 1 and the socket 2.
The foregoing electrical connector for rail transit vehicles, characterized in that: the plug supporting surface 101 is parallel to the bearing surfaces 210 on the left and right draw hook assemblies 201 and 202 of the socket, and a gap is formed, wherein the gap is more than or equal to 0.2mm and less than or equal to 0.5mm; the clearance is less to the inclination of plug 1 is very little, and the grafting of being convenient for, and the thick guide pin 206 of socket 2 can be smooth insert in the thick uide bushing 102 of plug 1, down change rocking arm subassembly 204, thick guide bar 209 gets into thick guide slot 105, at this moment, under thick uide bushing 102, thick guide pin 206, thick guide bar 209 get into thick guide action in the thick guide slot 105, fine guide pin 104, fine guide hole 207 are smooth to be acted on, realize multiple direction grafting, guarantee the effect of inserting.
After the plug 1 and the socket 2 are plugged and locked, the left drag hook assembly 201 and the right drag hook assembly 202 can realize the locking function of the plug 1, limit the shaking of the plug 1, prevent the plug 1 from falling off, and improve the reliability of connection.
In summary, the electric connector for the rail transit vehicle is provided with the support panel, the socket is provided with the support surface, the plug warping of the plug and the socket in the plugging process can be prevented, smooth plugging is ensured, the left drag hook assembly, the right drag hook assembly, the guide rod and the rocker arm assembly form the connecting rod operating mechanism, the front and back movement of the left drag hook assembly and the right drag hook assembly is realized by operating the rocker arm assembly, the thick guide sleeve on the plug is smoothly inserted into the thick guide pin on the socket on the corresponding side, the plug can be smoothly plugged into the socket, the matched connecting rod operating mechanism realizes the network control of the electric connector and the function of quickly plugging the signal control contact pin and the jack, the shielding cable of the network control module is connected with the shell of the socket, shielding is not interrupted in the use process, the structure is ingenious, the operation is convenient, and the signal communication of the rail transit vehicle is ensured, and the electric connector has good application prospect.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An electrical connector for a rail transit vehicle, characterized by: comprises a plug (1) and a socket (2),
support panels (101) are symmetrically arranged on the left side and the right side of the plug (1), thick guide sleeves (102) are arranged on the support panels (101), and lugs (103) extend outwards perpendicularly from the outer edges of the support panels (101);
the socket is characterized in that a left drag hook component (201) and a right drag hook component (202) are symmetrically arranged on the left side and the right side of the socket (2), thick guide pins (206) are arranged above the left drag hook component (201) and the right drag hook component (202), the thick guide pins (206) are matched with thick guide sleeves (102) on the corresponding sides, the left drag hook component (201) and the right drag hook component (202) are matched with lugs (103) on the corresponding sides, the left drag hook component (201) and the right drag hook component (202) are connected with a rocker arm component (204) through guide rods (203) respectively, the rocker arm component (204) spans above the socket (2), and the left drag hook component (201), the right drag hook component (202), the guide rods (203) and the rocker arm component (204) form a connecting rod operating mechanism, so that the front and back movement of the left drag hook component (201) and the right drag hook component (202) can be realized through operating the rocker arm component (204);
when the plug (1) and the socket (2) are plugged, the rocker arm assembly (204) is operated to be rotated to the upper limit position, the plug (1) is inserted, the lug (103) is placed into the bearing groove (205) on the left drag hook assembly (201) and the right drag hook assembly (202) at the corresponding side, at the moment, the supporting surface (101) is parallel to the bearing surface (210) on the left drag hook assembly (201) and the right drag hook assembly (202), a gap exists, the rocker arm assembly (204) is operated to rotate downwards, the thick guide pin (206) on the socket (2) is smoothly inserted into the thick guide sleeve (102) on the plug (1) at the corresponding side, and the plug (1) and the socket (2) are plugged in by multiple guide.
2. An electrical connector for rail transit vehicles as claimed in claim 1, wherein: be provided with accurate guide pin (104) that bilateral symmetry set up in plug (1), be provided with accurate guiding hole (207) that bilateral symmetry set up in socket (2), accurate guiding hole (207) and accurate guiding pin (104) position phase-match of corresponding side, after thick guide pin (206) inserts thick uide bushing (102) of plug (1) on socket (2), thick guide rib (209) inserts thick guide slot (105) on plug (1) smoothly on socket (2), then in accurate guiding pin (104) inserts accurate guiding hole (207) of corresponding side.
3. An electrical connector for rail transit vehicles as claimed in claim 1, wherein: the socket (2) is internally integrated with a plurality of signal control contact pairs and a plurality of network control modules, the shells of the plug (1), the socket (2) and the plurality of network control modules are all made of metal materials, and the shell of the socket (2) is connected with the ground of the rail transit vehicle.
4. An electrical connector for rail transit vehicles as claimed in claim 3, wherein: the multi-network control module housing can be connected with the housing of the socket (2) through a shielded cable.
5. An electrical connector for rail transit vehicles as claimed in claim 1, wherein: the left drag hook assembly (201) is provided with a safety hook (208), after the plug (1) and the socket (2) are inserted, the rocker arm assembly (204) is operated to swing downwards to a lower limit position, and the safety hook (208) automatically hooks the rocker arm (204) to realize the insertion locking of the plug (1) and the socket (2).
6. An electrical connector for rail transit vehicles according to claim 5, wherein: after the plug (1) and the socket (2) are locked in a plugging mode, the left drag hook assembly (201) and the right drag hook assembly (202) can achieve the anti-falling function of the plug (1).
7. An electrical connector for rail transit vehicles as claimed in claim 1, wherein: the supporting surface (101) is parallel to the bearing surfaces (210) on the left drag hook assembly (201) and the right drag hook assembly (202), and a gap is formed, and the range of the gap is between 0.2mm and 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791115.0A CN107732571B (en) | 2017-09-05 | 2017-09-05 | Electric connector for rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791115.0A CN107732571B (en) | 2017-09-05 | 2017-09-05 | Electric connector for rail transit vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732571A CN107732571A (en) | 2018-02-23 |
| CN107732571B true CN107732571B (en) | 2023-12-26 |
Family
ID=61205762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791115.0A Active CN107732571B (en) | 2017-09-05 | 2017-09-05 | Electric connector for rail transit vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107732571B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839520A (en) * | 2004-04-09 | 2006-09-27 | 松下电工株式会社 | Connector |
| CN201285923Y (en) * | 2008-11-18 | 2009-08-05 | 南京康尼科技实业有限公司 | Releasing mechanism for electric connector socket |
| JP2012195098A (en) * | 2011-03-15 | 2012-10-11 | Chugoku Electric Power Co Inc:The | Plug-in connector |
| CN202759097U (en) * | 2012-07-09 | 2013-02-27 | 乔讯电子(上海)有限公司 | Plug electric connector, socket electric connector and electric connector combination |
| CN104852207A (en) * | 2015-05-27 | 2015-08-19 | 南京康尼科技实业有限公司 | Floating connector for use in mass transit vehicles |
| KR20160040982A (en) * | 2014-10-06 | 2016-04-15 | 엘에스엠트론 주식회사 | Connector assembly and receptacle for the same |
| CN207124331U (en) * | 2017-09-05 | 2018-03-20 | 南京康尼科技实业有限公司 | A kind of electric connector for rail traffic vehicles |
-
2017
- 2017-09-05 CN CN201710791115.0A patent/CN107732571B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839520A (en) * | 2004-04-09 | 2006-09-27 | 松下电工株式会社 | Connector |
| CN201285923Y (en) * | 2008-11-18 | 2009-08-05 | 南京康尼科技实业有限公司 | Releasing mechanism for electric connector socket |
| JP2012195098A (en) * | 2011-03-15 | 2012-10-11 | Chugoku Electric Power Co Inc:The | Plug-in connector |
| CN202759097U (en) * | 2012-07-09 | 2013-02-27 | 乔讯电子(上海)有限公司 | Plug electric connector, socket electric connector and electric connector combination |
| KR20160040982A (en) * | 2014-10-06 | 2016-04-15 | 엘에스엠트론 주식회사 | Connector assembly and receptacle for the same |
| CN104852207A (en) * | 2015-05-27 | 2015-08-19 | 南京康尼科技实业有限公司 | Floating connector for use in mass transit vehicles |
| CN207124331U (en) * | 2017-09-05 | 2018-03-20 | 南京康尼科技实业有限公司 | A kind of electric connector for rail traffic vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107732571A (en) | 2018-02-23 |
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| SE01 | Entry into force of request for substantive examination | ||
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Inventor after: Wang Huan Inventor after: Shi Miaosen Inventor after: Ding Li Inventor before: Wang Huan |