CN107039865B - Connection structure of lamp cap and lamp holder capable of resisting ultra-high voltage - Google Patents
Connection structure of lamp cap and lamp holder capable of resisting ultra-high voltage Download PDFInfo
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- CN107039865B CN107039865B CN201710413930.3A CN201710413930A CN107039865B CN 107039865 B CN107039865 B CN 107039865B CN 201710413930 A CN201710413930 A CN 201710413930A CN 107039865 B CN107039865 B CN 107039865B
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- lamp
- lamp cap
- lamp holder
- ceramic
- metal contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/22—Two-pole devices for screw type base, e.g. for lamp
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
-
- 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
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Connecting Device With Holders (AREA)
Abstract
The invention discloses a connection structure of a lamp cap and a lamp holder resistant to ultra-high voltage, which comprises the lamp cap and the lamp holder, and is characterized in that the lamp cap comprises a lamp cap ceramic component, a lamp cap metal component and a lamp cap metal contact piece, and concave-convex positions are arranged on the bottom side of the lamp cap ceramic component; the lamp holder comprises a ceramic lamp holder body, a threaded metal sleeve, a metal contact piece, a first lamp holder binding post and a second lamp holder binding post, wherein a cavity for installing a lamp holder is arranged in the ceramic lamp holder body, an inner convex ring and an outer convex ring are arranged at the bottom of the cavity of the ceramic lamp holder body, a groove is arranged between the inner convex ring and the outer convex ring, and the groove is in concave-convex fit with the concave-convex position of the ceramic component of the lamp holder. The invention has simple structure, high pressure resistance and stable performance.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a high-pressure-resistant lamp cap and lamp holder connecting structure.
Background
The common lamp holders of the metal halogen lamp, the sodium lamp and the high-power illuminating lamp at home and abroad at present mainly comprise standard E40 lamp holders, the technology is simple, the cost is low, the lamp holders are characterized as international standardized devices, the lamp holders are suitable for lamp products with the voltage of about 8 kilovolts at most, the existing most lamps are basically satisfied, but the lamp holders are not suitable for the hot start requirement of gas discharge lamps, the hot start voltage of many gas discharge lamps exceeds 1 kilovolt, and even the hot start voltage of many gas discharge lamps reaches 2-3 kilovolts. Particularly, the latest generation of energy-saving xenon metal halogen lamps has long service life, high light efficiency, good color rendering property and no influence on the service life of the lamps when in hot start. In order to meet the hot start requirement of the lamp and the habitual installation mode of people, an installation connection structure of a lamp cap and a lamp holder which can withstand ultra-high voltage needs to be designed.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a connecting structure of a lamp cap and a lamp holder, which has the advantages of simple structure, safety, reliability and ultrahigh voltage resistance.
The invention adopts the following technical proposal to realize the aim: the connection structure of the ultrahigh voltage resistant lamp cap and the lamp holder comprises the lamp cap and the lamp holder, and is characterized in that the lamp cap comprises a lamp cap ceramic component, a lamp cap metal component and a lamp cap metal contact piece, the lamp cap ceramic component is connected and matched with the lamp cap metal component, and the lamp cap metal contact piece is fixed at the bottom of the lamp cap ceramic component; concave-convex positions are arranged on the bottom side of the lamp holder ceramic component;
the lamp holder comprises a ceramic lamp holder body, a threaded metal sleeve, a metal contact piece, a first lamp holder binding post and a second lamp holder binding post, wherein the ceramic lamp holder body is internally provided with a cavity for installing a lamp holder; the bottom of the cavity of the ceramic lamp holder main body is provided with an inner ring convex ring and an outer ring convex ring, a groove is arranged between the inner ring convex ring and the outer ring convex ring, and the groove is matched with the concave-convex position of the lamp holder ceramic component in a concave-convex manner, so that the first lamp holder binding post and the second lamp holder binding post are separated.
As a further explanation of the scheme, the upper part of the lamp cap ceramic component is provided with a connection part which is connected and matched with the metal spiral component, the bottom of the connection part is provided with a connection end, and the width of the connection part is larger than that of the connection end, so that a ladder-shaped structure which is transited from top to bottom is formed.
Further, a ceramic plate is arranged on the outer side of the connecting end, the ceramic plate protrudes downwards from the bottom of the connecting part, a gap is formed between the ceramic plate and the connecting end, and a concave-convex position structure is formed between the ceramic plate and the ceramic plate.
Further, the width of the groove is 1-3mm, the height of the ceramic plate is 8-10mm, and the thickness of the ceramic plate is 1-5mm.
Further, the connection part of the lamp cap ceramic component is provided with a counter bore, the bottom surface of the counter bore is provided with a plurality of mounting holes, the lower part of the metal spiral component is sleeved outside the connection part, and a connecting component in butt joint with the mounting holes is arranged.
Further, the shortest distance between the mounting hole and the center of the lamp cap ceramic assembly is 11.5mm.
Further, the connecting end of the lamp cap ceramic component is provided with a central through hole which is connected with the lamp cap metal contact piece.
Further, the upper part of the central through hole is communicated with a counter bore of the connecting part of the lamp cap ceramic component, and the length of the central through hole is 13-15mm.
Further, the lamp cap metal contact piece is T-shaped, comprises a metal contact piece face and a tubular column vertically arranged in the middle of the metal contact piece face, the tubular column is inserted into the lamp cap ceramic component and fixedly connected with the lamp cap ceramic component, and the lamp cap metal contact piece is provided with a through hole communicated with a central hole of the tubular column.
Further, the distance between the inner convex ring and the outer convex ring is 2-3mm, the height of the inner convex ring is 8-12mm, and the height of the outer convex ring is 16-20mm.
Further, a pressure spring is arranged in the central hole of the convex ring of the inner ring, and one end of the metal contact piece is covered above the central hole and is in movable contact with the pressure spring.
Further, one end of the metal contact piece is fixed outside the outer ring convex ring through a fixing screw, and a cover plate is arranged at the fixing screw of the metal contact piece, so that the nearest safe distance between the metal contact piece and the threaded metal sleeve is increased.
Further, the threaded metal sleeve is embedded in the inner wall of the ceramic lamp holder main body, and the minimum distance between the bottom of the threaded metal sleeve and the bottom of the cavity of the ceramic lamp holder main body is 20mm.
Further, the outer ring convex ring is provided with a concave position for allowing the metal contact to pass through, the metal contact is bent into a Z shape, and the upper part of the metal contact extends obliquely upwards.
Further, a wire or a conductive connecting sheet is connected between the lamp holder wiring terminal I and the threaded metal sleeve, and wiring holes corresponding to the lamp holder wiring terminal I and the lamp holder wiring terminal II are respectively formed in the bottom of the ceramic lamp holder main body.
The beneficial effects achieved by adopting the technical proposal of the invention are as follows:
the concave-convex position of the lamp cap ceramic component adopted by the invention is just matched with the concave-convex position of the groove between the convex rings of the inner ring and the outer ring of the ceramic lamp holder main body, after the lamp cap is screwed into the lamp holder, the inner two contact pieces are contacted, the two spiral metals are contacted, and according to the design, an insulating cover is added on the fixing screw of the lamp holder contact piece, so that the shortest distance between the two metal spiral and the two metal contact pieces, namely the two electrodes, can reach about 30mm, and the insulating voltage of 1000V per mm, the withstand voltage of two poles of the lamp cap lamp holder combination can reach about 3 ten thousand V, thereby completely meeting the hot start voltage impact of the xenon lamp, ensuring no creepage, jumping arc and striking, and adjusting design parameters by thinking.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a ceramic lamp head assembly according to the present invention;
FIG. 3 is a schematic view of a metal contact structure of a lamp cap according to the present invention;
FIG. 4 is a schematic view of a metal contact structure of a lamp cap according to the present invention;
FIG. 5 is a schematic diagram of the structure of the present invention;
FIG. 6 is a schematic diagram of a ceramic lamp holder according to the present invention;
fig. 7 is a schematic diagram of a lamp socket terminal structure of the present invention.
Reference numerals illustrate: 1. 1-1 parts of lamp cap, 1-11 parts of lamp cap ceramic components, 1-111 parts of connection parts, 1-112 parts of counter bores, 1-1 parts of mounting holes, 2 parts of connecting ends, 1-121 parts of central through holes, 1-13 parts of ceramic plates, 1-14 parts of grooves, 1-2 parts of lamp cap metal components, 1-3 parts of lamp cap metal contact plates, 1-31 parts of metal contact plate surfaces, 1-32 parts of tubular columns and through holes;
2. the ceramic lamp holder comprises a lamp holder 2-1, a ceramic lamp holder body 2-11, an inner ring convex ring 2-12, an outer ring convex ring 2-13, a concave position 2-14, a wiring hole 2-2, a threaded metal sleeve 2-3, a metal contact piece 2-4, a lamp holder wiring terminal I2-5, a lamp holder wiring terminal II 2-6, a groove position 2-7, a pressure spring 2-8 and a conductive connecting piece.
Detailed Description
The present technical solution is described in detail below with reference to specific embodiments.
As shown in fig. 1-7, the invention relates to a connection structure of a lamp cap and a lamp holder, which is resistant to ultra-high voltage, and comprises a lamp cap 1 and a lamp holder 2, wherein the lamp cap 1 comprises a lamp cap ceramic component 1-1, a lamp cap metal component 1-2 and a lamp cap metal contact piece 1-3, the lamp cap ceramic component is connected and matched with the lamp cap metal component, and the lamp cap metal contact piece is fixed at the bottom of the lamp cap ceramic component; the bottom side of the lamp cap ceramic component is provided with concave-convex positions, and the lamp cap ceramic component has the function of connection and positioning when being installed in a corresponding lamp holder. The upper part of the lamp cap ceramic component is provided with a connection part 1-11 which is connected and matched with the metal spiral component, the bottom of the connection part is provided with a connection end head 1-12, and the width of the connection part is larger than the connection end head, so that a ladder-shaped structure which is transited from top to bottom is formed. The outer side of the connecting end head 1-12 is provided with a ceramic plate 1-13, the ceramic plate protrudes downwards from the bottom of the connecting part, a space is reserved between the ceramic plate and the connecting end head, a groove 1-14 is formed, and the groove and the ceramic plate form a concave-convex position structure. The width of the groove is 2.75mm, the height of the ceramic plate is 9.35mm, and the thickness of the ceramic plate is 2mm.
Further, the connecting part of the lamp cap ceramic component 1-1 is provided with a counter bore 1-111, the bottom surface of the counter bore is provided with a plurality of mounting holes 1-112, and the shortest distance between the mounting holes and the center of the lamp cap ceramic component is 11.5mm. The lower part of the metal spiral component is sleeved outside the connection part and is provided with a connecting component which is in butt joint with the mounting hole. The connecting end of the lamp cap ceramic component is provided with a central through hole 1-121 which is connected with the lamp cap metal contact piece. The upper part of the central through hole is communicated with counter bores 1-111 of the connection part of the lamp cap ceramic component, and the length of the central through hole is 14.35mm. The lamp cap metal contact piece 1-3 is T-shaped and comprises a metal contact piece face 1-31 and a tubular column 1-32 vertically arranged in the middle of the lamp cap metal contact piece face, and the tubular column is inserted into a central through hole of the lamp cap ceramic component and is fixedly connected with the lamp cap ceramic component. In the embodiment, the section of the pipe column is square, which is favorable for connection and fixation between the pipe column and the central through hole of the lamp cap ceramic component. The cap metal contact is provided with through holes 1-33 communicating with the central hole of the pipe string. In this embodiment, after the lamp cap ceramic component, the lamp cap metal component and the lamp cap metal contact piece are mounted and fixed, the shortest distance between the lamp cap metal component and the lamp cap metal contact piece is 25mm.
The lamp holder 2 comprises a ceramic lamp holder main body 2-1 internally provided with a cavity for installing a lamp cap, a threaded metal sleeve 2-2, a metal contact piece 2-3, a first lamp holder wiring terminal 2-4 and a second lamp holder wiring terminal 2-5, wherein the threaded metal sleeve is arranged on the inner wall of the ceramic lamp holder main body, the metal contact piece, the first lamp holder wiring terminal and the second lamp holder wiring terminal are respectively arranged at the bottom of the ceramic lamp holder main body, the first lamp holder wiring terminal is connected with the threaded metal sleeve, and the metal contact piece is connected with the second lamp holder wiring terminal; the lamp holder binding post I and the lamp holder binding post II are provided with the groove position 2-6 that separates the two between them, and the concave-convex cooperation that is located the groove position of the bottom of lamp holder for lamp holder binding post I and lamp holder binding post II separate completely. The bottom of the cavity of the ceramic lamp holder main body is provided with inner and outer ring convex rings 2-11 and 2-12, and the groove is formed by mutually separated inner and outer ring convex rings. The distance between the inner convex ring and the outer convex ring is 2.75mm, the height of the inner convex ring is 10mm, and the height of the outer convex ring is 18mm. The pressure spring 2-7 is arranged in the central hole of the inner ring convex ring, and one end of the metal contact piece is covered above the central hole and is in movable contact with the pressure spring. The outer ring convex ring is provided with concave positions 2-13 for allowing the metal contact to pass through, the metal contact is bent into a Z shape, and the upper part of the metal contact extends obliquely upwards.
Further, one end of the metal contact piece is fixed outside the outer ring convex ring through a fixing screw, and a cover plate is arranged at the fixing screw of the metal contact piece, so that the nearest safe distance between the metal contact piece and the threaded metal sleeve is increased. The screw thread metal cover is embedded in the inner wall of ceramic lamp stand main part, and the minimum distance of screw thread metal cover's bottom and the bottom of the cavity of ceramic lamp stand main part is 20mm.
Further, a wire or a conductive connecting sheet 2-8 is connected between the lamp holder wiring terminal I and the threaded metal sleeve, and wiring holes 2-14 corresponding to the lamp holder wiring terminal I and the lamp holder wiring terminal II are respectively formed in the bottom of the ceramic lamp holder main body.
Compared with the prior art, the concave-convex position of the ceramic component of the lamp cap is just matched with the concave-convex position of the groove between the convex rings of the inner ring and the outer ring of the ceramic lamp holder main body, after the lamp cap is screwed into the lamp holder, the inner two contact pieces are contacted, the two spiral metals are contacted, and according to the design, the insulating cover is added on the fixing screw of the lamp holder contact piece, so that the shortest distance between the two metal spiral and the two metal contact pieces, namely the two electrodes, can reach about 30mm, and the withstand voltage of two poles of the lamp cap and the lamp holder combination can reach about 3 ten thousand volts according to the insulated voltage 1000 volts of each mm, thereby completely meeting the hot start voltage impact of the xenon lamp, ensuring no creepage and jump arc ignition, and adjusting design parameters according to thought and meeting higher requirements.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The connection structure of the ultrahigh voltage resistant lamp cap and the lamp holder comprises the lamp cap and the lamp holder, and is characterized in that the lamp cap comprises a lamp cap ceramic component, a lamp cap metal component and a lamp cap metal contact piece, the lamp cap ceramic component is connected and matched with the lamp cap metal component, and the lamp cap metal contact piece is fixed at the bottom of the lamp cap ceramic component; concave-convex positions are arranged on the bottom side of the lamp holder ceramic component;
the lamp holder comprises a ceramic lamp holder body, a threaded metal sleeve, a metal contact piece, a first lamp holder binding post and a second lamp holder binding post, wherein the ceramic lamp holder body is internally provided with a cavity for installing a lamp holder; the bottom of the cavity of the ceramic lamp holder main body is provided with an inner ring convex ring and an outer ring convex ring, a groove is arranged between the inner ring convex ring and the outer ring convex ring, and the groove is matched with the concave-convex position of the lamp holder ceramic component in a concave-convex manner;
the upper part of the lamp cap ceramic component is provided with a connection part which is connected and matched with the metal spiral component, the bottom of the connection part is provided with a connection end, and the width of the connection part is larger than that of the connection end, so that a ladder-shaped structure which is transited from top to bottom is formed; the outer side of the connecting end is provided with a ceramic plate which protrudes downwards from the bottom of the connecting part, a gap is formed between the ceramic plate and the connecting end, and a concave-convex position structure is formed by the groove and the ceramic plate; the connecting part of the lamp cap ceramic component is provided with a counter bore, the bottom surface of the counter bore is provided with a plurality of mounting holes, the lower part of the metal spiral component is sleeved outside the connecting part, and a connecting component which is in butt joint with the mounting holes is arranged;
the lamp holder wiring terminal I and the threaded metal sleeve are connected with a wire or a conductive connecting sheet, and wiring holes corresponding to the lamp holder wiring terminal I and the lamp holder wiring terminal II respectively are formed in the bottom of the ceramic lamp holder main body.
2. The connection structure of a lamp cap and a lamp socket resistant to ultra-high voltage according to claim 1, wherein the connection end of the lamp cap ceramic assembly is provided with a central through hole for being connected with the lamp cap metal contact piece; the upper part of the central through hole is communicated with a counter bore of the connection part of the lamp cap ceramic component, and the length of the central through hole is 13-15mm.
3. The connection structure of an ultra-high voltage resistant lamp cap and a lamp socket according to claim 1, wherein the lamp cap metal contact is T-shaped, comprising a metal contact surface and a column vertically disposed in the middle of the metal contact surface, the column being inserted into the lamp cap ceramic assembly and fixedly connected thereto, the lamp cap metal contact being provided with a through hole communicating with a central hole of the column.
4. The connection structure of a lamp cap and a lamp socket capable of withstanding ultra-high voltage as claimed in claim 1, wherein a pressure spring is disposed in the central hole of the inner ring convex ring, and one end of the metal contact piece is covered above the central hole and is in movable contact with the pressure spring.
5. The connection structure of an ultra-high voltage resistant lamp cap and a lamp socket according to claim 1, wherein one end of the metal contact is fixed outside the outer ring convex ring through a fixing screw, and a cover plate is arranged at the fixing screw of the metal contact.
6. The ultra-high voltage resistant lamp cap and socket connection structure according to claim 1, wherein the threaded metal sleeve is embedded in the inner wall of the ceramic socket body, and the minimum distance between the bottom of the threaded metal sleeve and the bottom of the cavity of the ceramic socket body is 20mm.
7. The connection structure of a lamp cap and a lamp socket for withstanding ultra-high voltage as claimed in claim 1, wherein the outer ring convex ring is provided with a concave portion for receiving the metal contact sheet therethrough, the metal contact sheet is bent into a Z shape, and an upper portion of the metal contact sheet is extended obliquely upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413930.3A CN107039865B (en) | 2017-06-05 | 2017-06-05 | Connection structure of lamp cap and lamp holder capable of resisting ultra-high voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413930.3A CN107039865B (en) | 2017-06-05 | 2017-06-05 | Connection structure of lamp cap and lamp holder capable of resisting ultra-high voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107039865A CN107039865A (en) | 2017-08-11 |
| CN107039865B true CN107039865B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710413930.3A Active CN107039865B (en) | 2017-06-05 | 2017-06-05 | Connection structure of lamp cap and lamp holder capable of resisting ultra-high voltage |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713696Y (en) * | 2003-11-05 | 2005-07-27 | 东莞大朗金准电器厂 | Lamp holder |
| CN2728042Y (en) * | 2004-07-27 | 2005-09-21 | 宁波成信电器有限公司 | Leakage proof lamp holder |
| CN2845234Y (en) * | 2005-09-12 | 2006-12-06 | 贺锡亭 | Split combined lamp holder |
| CN201285752Y (en) * | 2008-09-11 | 2009-08-05 | 吴胤熙 | Lamp holder and lamp socket structure for xenon lamp |
| CN101740321A (en) * | 2009-12-31 | 2010-06-16 | 文德彪 | Energy-saving bulb |
| CN202534915U (en) * | 2011-12-19 | 2012-11-14 | 邱发标 | A ceramic lamp socket or lamp cap containing screw internal screw thread |
| CN206758804U (en) * | 2017-06-05 | 2017-12-15 | 佛山市大一照明科技有限公司 | The lamp holder of resistance to extra-high voltage and the attachment structure of lamp socket |
-
2017
- 2017-06-05 CN CN201710413930.3A patent/CN107039865B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713696Y (en) * | 2003-11-05 | 2005-07-27 | 东莞大朗金准电器厂 | Lamp holder |
| CN2728042Y (en) * | 2004-07-27 | 2005-09-21 | 宁波成信电器有限公司 | Leakage proof lamp holder |
| CN2845234Y (en) * | 2005-09-12 | 2006-12-06 | 贺锡亭 | Split combined lamp holder |
| CN201285752Y (en) * | 2008-09-11 | 2009-08-05 | 吴胤熙 | Lamp holder and lamp socket structure for xenon lamp |
| CN101740321A (en) * | 2009-12-31 | 2010-06-16 | 文德彪 | Energy-saving bulb |
| CN202534915U (en) * | 2011-12-19 | 2012-11-14 | 邱发标 | A ceramic lamp socket or lamp cap containing screw internal screw thread |
| CN206758804U (en) * | 2017-06-05 | 2017-12-15 | 佛山市大一照明科技有限公司 | The lamp holder of resistance to extra-high voltage and the attachment structure of lamp socket |
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| CN107039865A (en) | 2017-08-11 |
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