CN114512839B - Three-core high-voltage connector - Google Patents

Three-core high-voltage connector Download PDF

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Publication number
CN114512839B
CN114512839B CN202210113304.3A CN202210113304A CN114512839B CN 114512839 B CN114512839 B CN 114512839B CN 202210113304 A CN202210113304 A CN 202210113304A CN 114512839 B CN114512839 B CN 114512839B
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China
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diameter
middle electrode
boss
cathode
hole
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CN114512839A (en
Inventor
张志波
黄丽
高华英
贾敏
吴云
崔巍
宋慧敏
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Air Force Engineering University of PLA
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Air Force Engineering University of PLA
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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • 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
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/005—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure requiring successive relative motions to complete the coupling, e.g. bayonet type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Spark Plugs (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Providing a three-core high-voltage connector, comprising a male head and a female head, wherein the external thread of an external insulator 201 of the female head (101) is connected with the internal thread of an external connector (207) in the male head (102); screwing the female head (101) into the male head (102) from bottom to top; during the screw tightening process, the anode (204) of the female head (101) is in initial contact with the anode (210) of the male head (102); as the threads continue to tighten, the spring (212) compresses; when the spring (212) is compressed to a certain degree, the middle electrode (203) of the female head (101) is contacted with the middle electrode (209) of the male head (102); because the middle electrode (203) of the female head (101) and the cathode (201) realize force transmission through the boss, the middle electrode (209) of the male head (102) and the external connecting piece (207) realize force transmission through the boss, the contact force between the middle electrode (203) and the middle electrode (209) is continuously enhanced along with the continuous screwing of the screw thread; finally, through the three-core connecting piece of design, the three electrodes that the male head corresponds with female head all realize reliable connection respectively. The invention effectively utilizes the pretightening force provided by the spring, so that the three electrodes can be in close contact, and the problem of false ignition caused by overlarge contact resistance is effectively avoided.

Description

Three-core high-voltage connector
Technical Field
The invention is mainly applied to the fields of high-energy plasma ignition and the like, and particularly relates to a three-core high-voltage connector.
Background
As the severity of the ignition environment increases, the energy required for ignition increases rapidly. The incoming flow rate of a scramjet engine is as high as 2Ma, the dwell time is less than 1ms, and the required ignition energy is expected to be on the order of kilojoules. The traditional ignition system adopts two cores (high voltage line and low voltage line) to transfer energy, a switching device and an external ignition end load are connected in series, and the switching device causes energy loss. As the ignition energy is further increased, the losses will be further increased. Meanwhile, under the condition of large energy, the through-flow requirement of the switch is improved, and higher requirements are put on the service life of the switch. For this purpose researchers have proposed an ignition strategy in the form of a three electrode, which releases most of the energy of the discharge through a second discharge channel. At this time, the switching device and the second discharge path are separated into two branches. Therefore, the discharge efficiency is high and the switching loss is small. The whole ignition system still has long service life under the condition of large energy. In this case, a three-wire cable must be used to reliably connect the ignition power supply to the ignition tip. At the connection, a reliable connector is necessarily required.
The three-core connector commonly used at present has larger contact resistance and insufficient pretightening force between electrodes. When the high voltage of the ignition system passes through the connector, spark discharge is extremely easy to trigger, so that the ignition system has great potential safety hazard and can work in a state deviating from a design state. Thus, for ignition systems in the form of three electrodes, there is also a lack of reliable high voltage connector structures.
In summary, the current three-electrode version of the ignition system also lacks a reliable and simple connector structure to enable a quick and reliable connection between the ignition power source, the ignition plug and the ignition cable.
Disclosure of Invention
In order to solve the problems, the ignition power supply, the ignition electric nozzle and the ignition cable can be rapidly and reliably connected, so that the flexible disassembly is ensured, and the reliable work is ensured. The invention provides a three-core high-voltage connector which consists of a female head 101 and a male head 102, wherein the two parts are tightly combined into a whole through external threads on the outer wall of the female head 101 and internal threads of the male head 102; wherein the method comprises the steps of
The mother head 101 comprises five parts, namely a cathode 201, an outer insulating member 202, an intermediate electrode 203, an inner insulating member 205 and an anode 204; the cathode 201, the outer insulating member 202, the middle electrode 203, the inner insulating member 205 and the anode 204 are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axis of the female head 101;
the cathode 201 is hollow cylindrical, and the top and the bottom are both open; the bottom is provided with an inner boss which faces the inside of the cathode 201, the inner boss is an annular body with a certain thickness, and the inner boss plays a role in blocking the outer insulating part 202 so as to achieve the purpose of transmitting fastening force; the outer wall of the cathode 201 extends from the lower part to the top and is provided with external threads connected with the male 102;
the outer insulating member 202 is a hollow cylinder, the inner hole of the outer insulating member 202 is a step hole structure formed by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the outer insulating member 202 are open; the diameter of the small hole is slightly smaller than that of the large hole; the outer layer insulator 202 is completely embedded in the inner cavity of the cathode 201, the top is flush with the top of the cathode 201, and the bottom is blocked by the inner boss of the cathode 201; the outer wall of the outer insulating piece 202 is tightly matched with the inner wall of the cathode 201;
the middle electrode 203 is a hollow cylinder, is inserted into the outer insulating member 202 from top to bottom, has an outer diameter which is consistent with the diameter of the large hole of the outer insulating member 202 or slightly smaller than the diameter of the outer insulating member 202, is convenient to insert, and is tightly matched with the outer wall of the middle electrode 203 and the inner wall of the outer insulating member 202; the inner hole of the electrode is formed into a step hole structure by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the middle electrode 203 are opened; the middle electrode 203 is embedded in the large hole of the outer layer insulator 202, the top of the middle electrode 203 is kept at a certain distance from the top of the outer layer insulator 202, and the bottom of the middle electrode is contacted with the bottom surface of the large hole of the outer layer insulator 202;
the inner insulating part 205 is a hollow cylinder, the inner hole is a step hole structure formed by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the inner insulating part 205 are open; the outer diameter of the inner insulating part 205 is consistent with the diameter of the large hole of the middle electrode 203 or slightly smaller than the diameter of the large hole of the middle electrode 203, so that the inner insulating part 205 is conveniently inserted into the large hole of the middle electrode 203 from top to bottom, and the outer wall of the inner insulating part 205 is tightly matched with the inner wall of the middle electrode 203; the top of the internal insulator 205 is kept at a certain distance from the top of the middle electrode 203, and the bottom is contacted with the bottom surface of the big hole of the middle electrode 203;
the anode 204 is of a solid disc structure and is positioned in the large hole of the inner insulator 205, and the bottom surface of the anode is contacted with the bottom surface of the large hole of the inner insulator 205; the center of the anode 204 is arranged on the axis of the female head 101, and a certain distance exists between the outer circumference of the anode 204 and the inner wall surface of the small hole of the internal insulator 205, so that the assembly is convenient;
the male 102 includes an external connection 207, a cathode external connection 206, an external insulation 208, an intermediate electrode 209, a spring 212, an inner insulation 211, an anode 210; the external connecting piece 207, the cathode external connecting piece 206, the external insulating piece 208, the intermediate electrode 209, the spring 212, the inner insulating piece 211 and the anode 210 are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axis of the male 102;
the external connecting piece 207 is a hollow cylinder with internal threads, the internal threads are positioned at the position that the inner walls of the internal threads extend from the middle upper part to the bottom in a consistent way, the top end of each internal thread is designed with an internal boss structure, the internal boss faces the inside of the external connecting piece 207, and is an annular body with a certain thickness, and the internal boss is used for blocking the cathode external connecting piece 206 and preventing the cathode external connecting piece from falling; the internal thread is matched with the external thread at the top of the cathode 201 in the female head 101;
the outer insulating member 208 is a hollow cylinder, the upper and lower ends are open, an annular boss is arranged near the upper part, the annular boss is kept at a certain distance from the upper end of the outer insulating member 208, and the maximum diameter of the annular boss is consistent with the inner diameter of the outer connecting member 207 or slightly smaller than the inner diameter of the outer connecting member 207; the external insulating piece 208 is conveniently inserted into the external connecting piece 207 from bottom to top, so that the external insulating piece 208 and the external connecting piece 207 form tight fit at the annular boss, and the positions of the external insulating piece 208 and the external connecting piece 207 are kept relatively fixed;
the middle electrode 209 is a hollow cylinder with an inner boss on the upper part and an outer boss on the lower part, and the inner boss and the outer boss are just positioned at the upper end and the lower end of the hollow cylinder; the outer diameter of the outer boss is consistent with the outer diameter of the bottom of the outer insulating piece 208, and the outer diameter of the intermediate electrode 209 is consistent with the inner diameter of the outer insulating piece 208 or slightly smaller than the inner diameter of the outer insulating piece 208, so that the intermediate electrode 209 can be conveniently assembled into the inner hole of the outer insulating piece 208 from bottom to top;
the spring 212 is positioned inside the middle electrode 209, and the top of the spring is contacted with the bottom of the boss in the middle electrode 209; the outer diameter of the spring 212 is identical to or slightly smaller than the inner diameter of the intermediate electrode 209, facilitating the loading of the spring 212 into the large aperture of the intermediate electrode 209;
the inner insulating member 211 has a hollow cylindrical structure with an outer boss on the top; the maximum diameter of the outer boss is identical with the inner diameter of the middle electrode 209 or slightly smaller than the inner diameter of the middle electrode 209, so that the inner insulating part 211 is conveniently arranged in the middle electrode 209, and the inner insulating part 211 is arranged in the middle electrode 209 and below the spring 212; the outer diameter of the inner insulator 211 is smaller than the maximum diameter of its outer boss;
the anode 210 has a hollow cylindrical structure, and has an outer diameter identical to that of the inner insulating member 211, and is disposed at the bottom of the inner insulating member 211 and fixedly connected to the inner insulating member 211.
In one embodiment of the invention:
the outer diameter of the cathode 201 is 16-22 mm, and the diameter of the inner cavity is 13-18 mm;
the diameter of the large hole of the outer insulating piece 202 is 11-16 mm, and the depth is 40-60 mm; the diameter difference between the small holes and the large holes is 1-3 mm; the depth of the small hole is 10-30 mm;
the diameter of the large hole of the middle electrode 203 is 8-12 mm, and the depth is 20-40 mm; the diameter of the small hole is 7-11 mm, and the depth is 1-3 mm;
the diameter of the large hole of the inner insulating piece 205 is 6-10 mm, and the depth is 10-20 mm; the diameter of the small hole is 4-6 mm, and the depth is 10-15 mm; the top of the inner insulator 205 is 1-3 mm from the top of the intermediate electrode 203;
the anode 204 has an outer diameter of 4 to 6mm and a height of 1 to 3mm.
In one embodiment of the invention:
the outer diameter of the cathode 201 is 18mm, and the diameter of the inner cavity is 15mm;
the diameter of the large hole of the outer insulating piece 202 is 13mm; the depth is 50mm; the diameter difference between the small holes and the large holes is 1mm; the depth of the small hole is 15mm;
the diameter of the large hole of the middle electrode 203 is 10mm, the depth is 30mm, the diameter of the small hole is 9mm, and the depth is 2mm; the top of the intermediate electrode 203 is 20mm from the top of the outer layer insulator 202;
the inner insulator 205 has a major hole diameter of 8mm; the depth is 15mm; the diameter of the small hole is 5mm; the depth of the small hole is 13mm; the top of the inner insulator 205 is 2mm from the top of the intermediate electrode 203;
the anode 204 had an outer diameter of 5.5mm and a height of 2mm.
In another embodiment of the present invention, the male 102 further comprises a cathode external connector 206, wherein the cathode external connector 206 is a hollow cylinder with an outer boss at the bottom; the maximum diameter of the outer boss is identical to or slightly smaller than the inner diameter of the outer connecting piece 207, so that the cathode external connecting piece 206 is conveniently hung on the inner boss of the outer connecting piece 207, and the inner hole diameter of the cathode external connecting piece 206 is 11-16 mm.
In another embodiment of the invention, the diameter of the bore of the cathode outer 206 is 13mm.
In yet another embodiment of the present invention:
the outer diameter of the external connecting piece 207 is 20-24 mm; the length of the external connecting piece 207 is 20-40 mm;
the inner diameter of the outer insulator 208 is 8-12 mm; the minimum diameter of the annular boss is 10-14 mm;
the inner diameter of the intermediate electrode 209 is 6-10 mm; the inner diameter of the inner boss is 4-8 mm;
the outer diameter of the inner insulating member 211 is 1-2 mm less than the maximum diameter of the outer boss thereof; the inner diameter of the inner insulating member 211 is 4 to 6mm;
the anode 210 has an inner diameter of 1-3 mm.
In yet another embodiment of the present invention:
the outer diameter of the external connector 207 is 22mm; the external connection 207 has a length of 30mm;
the outer insulator 208 has an inner diameter of 10mm; the minimum diameter of the annular boss is 12mm;
the inner diameter of the intermediate electrode 209 is 8mm; the inner diameter of the inner boss is 6mm;
the outer diameter of the inner insulator 211 is 1mm less than the maximum diameter of its outer boss; the inner diameter of the inner layer insulator 211 is 5mm;
the anode 210 has an inner diameter of 2mm.
In yet another embodiment of the present invention, the outer insulation 202 and the inner insulation 205, the outer insulation 208, the inner insulation 211 are composed of a high temperature resistant insulation material.
In addition, the three-core high-voltage connector has the following connection modes: the external threads of the cathode 201 of the female head 101 are connected with the internal threads of the external connector 207 in the male head 102; screwing the female head 101 into the male head 102 from bottom to top; during the screw-down process, the anode 204 of the female 101 is first in contact with the anode 210 of the male 102; as the threads continue to tighten, the spring 212 compresses; when the spring 212 is compressed to a certain extent, the middle electrode 203 of the female head 101 is in contact with the middle electrode 209 of the male head 102; because the middle electrode 203 of the female head 101 and the cathode 201 realize force transmission through the boss, the middle electrode 209 of the male head 102 and the external connecting piece 207 realize force transmission through the boss, the contact force between the middle electrode 203 and the middle electrode 209 is continuously enhanced along with the continuous tightening of the threads; finally, the three electrodes corresponding to the male head and the female head are respectively and reliably connected.
The invention effectively utilizes the pretightening force provided by the spring, so that three electrodes of the high-voltage plug connector can be in close contact, and the problem of false ignition caused by overlarge contact resistance is effectively avoided.
Drawings
FIG. 1 is a diagram showing the overall structure of a three-core high-voltage connector according to the present invention, wherein FIG. 1 (a) is a three-dimensional solid diagram showing the whole body after the male and female terminals are connected, and FIG. 1 (b) is a cross-sectional diagram showing the whole body after the male and female terminals are connected;
fig. 2 is a cross-sectional view of the male and female, wherein fig. 2 (a) is a cross-sectional view of the female, and fig. 2 (b) is a cross-sectional view of the male.
101-connector female
102-connector male
201-connector female cathode
202-connector female outer layer insulator
203-connector female middle electrode
204-connector female anode
205-connector female internal insulator
206-connector male connector external connector
207-connector male external connector
208-connector male external insulator
209-connector male middle electrode
210-connector male anode
211-connector male internal insulator
212-connector male spring
Detailed Description
In order to achieve the above purpose, the invention provides a three-core high-voltage connector design, which is characterized in that the three electrodes can be effectively and tightly contacted by utilizing the pretightening force of a spring. Referring to fig. 1 and 2, the high-voltage connector is composed of a female head 101 and a male head 102, and the two parts are tightly combined with an internal thread of the male head 102 into a whole through an external thread of an outer wall of the female head 101.
As shown in fig. 2, the female head 101 is composed of five parts, namely a cathode 201, an outer insulator 202, an intermediate electrode 203, an inner insulator 205, and an anode 204. The cathode 201, the outer insulating member 202, the intermediate electrode 203, the inner insulating member 205 and the anode 204 are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axes of the female head 101.
The cathode 201 is hollow cylindrical and has an open top and bottom design. The bottom is designed with an inner boss facing the inside of the cathode 201, the inner boss is an annular body with a certain thickness, and the inner boss plays a role in blocking the outer insulating member 202, so as to achieve the purpose of transmitting fastening force. The outer wall of the cathode 201, which continues from the lower part to the top, is designed with an external thread connected to the male 102. The cathode 201 has an outer diameter of 16 to 22mm, preferably 18mm, and an inner cavity diameter of 13 to 18mm, preferably 15mm.
The outer insulating member 202 is a hollow cylinder, the inner hole of which is formed by a large hole and a small hole into a step hole structure, the large hole is arranged on the upper part, the small hole is arranged on the lower part, and the upper end and the lower end of the outer insulating member 202 are open. The diameter of the large holes is 11-16 mm, preferably 13mm; the depth is 40 to 60mm, preferably 50mm. The diameter of the small hole is slightly smaller than that of the large hole, and the diameter difference is 1-3 mm, preferably 1mm; the depth is 10 to 30mm, preferably 15mm. The outer insulator 202 is fully embedded in the interior cavity of the cathode 201, with the top flush with the top of the cathode 201 and the bottom blocked by the inner boss of the cathode 201. The outer wall of the outer insulator 202 is a tight fit with the inner wall of the cathode 201.
The middle electrode 203 is a hollow cylinder, and is inserted into the outer insulating member 202 from top to bottom, and the outer diameter of the middle electrode is identical to the diameter of the large hole of the outer insulating member 202 or slightly smaller than the diameter of the outer insulating member 202, so that the middle electrode 203 is convenient to insert, and the outer wall of the middle electrode 203 is tightly matched with the inner wall of the outer insulating member 202. The inner hole of the electrode is formed into a step hole structure by a large hole and a small hole, the large hole is arranged on the upper part, the small hole is arranged on the lower part, and the upper end and the lower end of the middle electrode 203 are opened. The diameter of the large holes is 8-12 mm, preferably 10mm, the depth is 20-40 mm, preferably 30mm, the diameter of the small holes is 7-11 mm, preferably 9mm, and the depth is 1-3 mm, preferably 2mm. The middle electrode 203 is embedded in the large hole of the outer layer insulator 202, the top is 20mm away from the top of the insulator 202, and the bottom is contacted with the bottom surface of the large hole of the outer layer insulator 202.
The inner insulating member 205 is a hollow cylinder, the inner hole is a stepped hole structure formed by two holes, namely a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the inner insulating member 205 are open. The diameter of the macropores is 6-10 mm, preferably 8mm; the depth is 10 to 20mm, preferably 15mm. The diameter of the small hole is 4-6 mm, preferably 5mm; the depth is 10 to 15mm, preferably 13mm. The outer diameter of the inner insulating member 205 is identical to or slightly smaller than the diameter of the large hole of the middle electrode 203, so that the inner insulating member 205 can be conveniently inserted into the large hole of the middle electrode 203 from top to bottom, and the outer wall of the inner insulating member 205 is tightly matched with the inner wall of the middle electrode 203. The top of the inner insulator 205 is 1 to 3mm, preferably 2mm, from the top of the intermediate electrode 203, and the bottom is in contact with the bottom surface of the large hole of the intermediate electrode 203.
The anode 204 is a solid disk structure with an outer diameter of 4-6 mm, preferably 5.5mm, and a height of 1-3 mm, preferably 2mm. Is positioned inside the large hole of the inner insulating member 205, and the bottom surface is contacted with the bottom surface of the large hole of the inner insulating member 205. The center of the anode 204 is on the axis of the female head 101, and a certain distance exists between the outer circumference of the anode 204 and the inner wall surface of the small hole of the internal insulator 205, so that the assembly is convenient.
The cathode 201, the intermediate electrode 203 and the anode 204 are made of metal, preferably stainless steel. The outer insulator 202 and the inner insulator 205 are composed of a high temperature resistant insulating material, preferably microcrystalline glass ceramic.
The male 102 is composed of an external connection 207, a cathode external connection 206, an external insulation 208, an intermediate electrode 209, a spring 212, an inner insulation 211, and an anode 210. The external connection member 207, the cathode external connection member 206, the external insulation member 208, the intermediate electrode 209, the spring 212, the inner insulation member 211 and the anode 210 are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axis of the male 102.
The external connection member 207 is a hollow cylinder with internal threads, the internal threads are positioned at the position where the inner walls of the internal threads extend from the middle upper part to the bottom in a consistent manner, the top ends of the internal threads are designed with internal boss structures, the internal boss structures face the inside of the external connection member 207, the internal boss structures are annular bodies with certain thickness, and the internal boss structures are used for blocking the cathode external connection member 206 and preventing the cathode external connection member from falling. The external connector 207 has an external diameter of 20 to 24mm, preferably 22mm. The internal threads mate with external threads on top of the cathode 201 in the female head 101. The external connection 207 has a length of 20 to 40mm, preferably 30mm.
The cathode outer 206 is a hollow cylinder with an outer boss at the bottom. The maximum diameter of the outer boss is identical to or slightly smaller than the inner diameter of the outer connector 207, so that the cathode outer connector 206 is conveniently hung on the inner boss of the outer connector 207. The cathode outer 206 has an inner bore diameter of 11 to 16mm, preferably 13mm. The cathode external member 206 is not an essential part of the present invention, and may be omitted or added for the purpose of facilitating the connection of the connector assembly of the present invention as a whole to an external cable.
The outer insulating member 208 is a hollow cylinder, the upper and lower ends are open, and an annular boss is provided near the upper portion, the annular boss is kept at a certain distance from the upper end of the outer insulating member 208, and the maximum diameter of the annular boss is identical to or slightly smaller than the inner diameter of the outer connecting member 207. The outer insulating member 208 is conveniently inserted into the outer connecting member 207 from bottom to top, so that the outer insulating member 208 and the outer connecting member 207 form a tight fit at the annular boss, and the positions of the outer insulating member and the outer connecting member are kept relatively fixed. The outer insulator 208 has an inner diameter of 8 to 12mm, preferably 10mm. The minimum diameter of the annular boss is 10-14 mm, preferably 12mm. The inner boss of the external connecting piece 207, the outer boss of the cathode external connecting piece 206 and the annular boss of the external insulating piece 208 are integrally formed into a tight fit at the contact positions of the three.
The middle electrode 209 is a hollow cylinder with an inner boss and an outer boss at the lower part, and the inner boss and the outer boss are just positioned at the upper end and the lower end of the hollow cylinder. The outer diameter of the outer boss is the same as the outer diameter of the bottom of the outer insulator 208, and the outer diameter of the intermediate electrode 209 (i.e., the small diameter of the outer portion of the outer boss) is the same as or slightly smaller than the inner diameter of the outer insulator 208, facilitating the bottom-up assembly of the intermediate electrode 209 into the inner bore of the outer insulator 208. The inner diameter of the intermediate electrode 209 (i.e., the maximum inner diameter of the inner boss) is 6 to 10mm, preferably 8mm; the inner diameter of the inner boss is 4-8 mm, preferably 6mm.
The spring 212 is positioned inside the intermediate electrode 209 with the top in contact with the bottom of the boss in the intermediate electrode 209. The outer diameter of the spring 212 is the same as or slightly smaller than the inner diameter of the intermediate electrode 209 to facilitate loading the spring 212 into the large bore of the intermediate electrode 209.
The inner insulator 211 is a hollow cylinder structure with an outer boss on top. The maximum diameter of the outer boss is the same as or slightly smaller than the inner diameter of the intermediate electrode 209, so that the inner insulator 211 is conveniently installed in the intermediate electrode 209, and the inner insulator 211 is placed in the intermediate electrode 209 below the spring 212. The outer diameter of the inner insulator 211 is 1-2 mm, preferably 1mm, less than the maximum diameter of its outer boss. The inner diameter of the inner layer insulator 211 is 4 to 6mm, preferably 5mm.
The anode 210 has a hollow cylindrical structure, the outer diameter of which is identical to the outer diameter of the inner insulating member 211, is disposed at the bottom of the inner insulating member 211 and is fixedly connected with the inner insulating member 211, for example, by bonding, and the inner diameter of the anode 210 is 1-3 mm, preferably 2mm.
The materials of the external connector 207, the cathode external connector 206, the intermediate electrode 209 and the anode 210 are metal, preferably stainless steel. The outer insulator 208 and the inner insulator 211 are made of a high temperature resistant insulating material, preferably microcrystalline glass ceramic.
The whole connector is connected in the following way: the external threads of the cathode 201 of the female head 101 are connected to the internal threads of the external connector 207 in the male head 102. The female 101 shown in fig. 2 (a) is screwed into the male 102 from bottom to top. During the screw-down process, the anode 204 of the female 101 is first in contact with the anode 210 of the male 102. As the threads continue to tighten, the spring 212 compresses. When the spring 212 is compressed to some extent, the intermediate electrode 203 of the female 101 contacts the intermediate electrode 209 of the male 102. Since the intermediate electrode 203 of the female terminal 101 and the cathode 201 achieve force transmission through the boss, and the intermediate electrode 209 of the male terminal 102 and the external connection member 207 achieve force transmission through the boss, the contact force between the intermediate electrode 203 and the intermediate electrode 209 is continuously enhanced as the screw thread is continuously tightened. Finally, through the three-core connecting piece of design, three electrodes (cathode, anode, intermediate electrode) that public head, female head correspond all realize reliable connection respectively, guaranteed high-voltage signal's transmission.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The three-core high-voltage connector consists of a female connector 101 and a male connector 102.
The female head 101 is composed of five parts, namely a cathode 201, an outer insulating member 202, an intermediate electrode 203, an inner insulating member 205 and an anode 204. Except for the anode 204, the outer insulating member 202, the middle electrode 203, the inner insulating member 205 and the anode 204 are hollow, the two ends of the inner hole are open, the inner hole is formed by two holes, namely, a large hole is formed at the top, and a small hole is formed at the bottom. The outer insulator 202 and the inner insulator 205 are made of polyethylene, and the cathode 201, the intermediate electrode 203, and the anode 204 are made of stainless steel. The cathode 201 has an outer diameter of 18mm, a large hole diameter of 15mm, a depth of 60mm, a small hole diameter of 14mm and a depth of 2mm. The outside has threads M18 which are 40mm from the top. The diameter of the large hole of the outer insulating piece 202 is 13mm; the depth was 50mm. The small holes are slightly smaller than the large holes, the diameter difference is 1mm, and the depth is 10mm. The outer insulator 202 is fully embedded in the cavity of the cathode 201 with the top flush with the top of the cathode 201 and the bottom in contact with the bottom of the large hole of the cathode 201. The outer wall of the outer insulator 202 is a tight fit with the inner wall of the cathode 201. The intermediate electrode 203 is placed in the outer insulating member 202 and has an outer diameter slightly smaller than the diameter of the outer insulating member 202, a large hole diameter of 10mm, a depth of 30mm, a small hole diameter of 9mm and a depth of 2mm. The middle electrode 203 is embedded in the large hole of the outer insulating member 202, the top is 20mm away from the top of the insulating member 202, and the bottom is contacted with the bottom surface of the large hole of the insulating member 202. The inner insulating member 205 is a hollow cylinder, and the inner hole is formed by a large hole and a small hole, so that the large hole is arranged at the upper part, and the small hole is arranged at the lower part. The diameter of the large hole is 8mm, and the depth is 15mm. The diameter of the small hole is 4mm and the depth is 13mm. The inner insulator 205 has an outer diameter that corresponds to the large hole of the intermediate electrode 203. The top of the inner insulator 205 is 2mm from the top of the intermediate electrode 203 and the bottom is in contact with the bottom of the large hole of the intermediate electrode 203. The anode 204 is a solid disk structure with an outer diameter of 5mm and a height of 2mm. Is positioned inside the large hole of the inner insulating member 205, and the bottom surface is contacted with the bottom surface of the large hole of the insulating member 205.
The male 102 is composed of an external connection member 207, a cathode external connection member 206, an external insulation member 208, an intermediate electrode 209, a spring 212, an inner insulation member 211 and an anode 210, wherein the external insulation member 208 and the inner insulation member 211 are formed by processing polyethylene, and the rest is formed by processing stainless steel. The external connection member 207 is a hollow cylinder with internal threads, and the top end of the internal threads is designed with an internal boss structure. The outer diameter of the external connector 207 is 22mm. The internal threads mate with external threads on top of the external insulator 201 in the female 101. The cathode external member 206 is a hollow cylinder with an outer boss at the bottom, the maximum diameter of the outer boss is identical to the inner diameter of the external connecting member 207, and the inner hole diameter of the cathode external member 206 is 13mm. The outer insulator 208 is located below the cathode outer member 206, but its top end is in form-fit with the bottom of the cathode outer member 206, and the outer insulator 208 has an annular boss near its upper portion, the maximum diameter of the annular boss being identical to the inner diameter of the outer connector 207, the inner diameter of the outer insulator 208 being 10mm, and the minimum outer diameter of the annular boss being 12mm. The middle electrode 209 is a hollow cylinder with an inner boss and an outer boss at the lower part, and the inner boss and the outer boss are just positioned at the upper end and the lower end of the hollow cylinder. The maximum diameter of the outer boss is consistent with the outer diameter of the outer insulating piece 208, and the small outer diameter of the outer boss of the intermediate electrode 209 is consistent with the inner hole diameter of the outer insulating piece 208; the maximum inner diameter of the inner boss is 8mm, and the minimum inner diameter of the inner boss is 6mm. The spring 212 is positioned inside the middle electrode 209, the outer diameter is consistent with the diameter of the inner hole of the middle electrode 209, and the top end of the spring 212 is contacted with the bottom end of the boss in the middle electrode 209. The inner insulating member 211 has a hollow structure with an outer boss at the top end, is arranged inside the intermediate electrode 209 and below the spring 212, and has a maximum diameter consistent with the inner diameter of the intermediate electrode 209. The outer diameter of the inner insulator 211 is 1mm less than the maximum diameter of the outer boss thereof, and the inner diameter of the inner insulator 211 is 5mm. The anode 210 is a hollow cylinder, is positioned at the bottom of the inner insulating member 211 and is fixedly connected with the same, and has an outer diameter identical to the outer diameter of the inner insulating member 211 and an inner diameter of 2mm.

Claims (9)

1. The three-core high-voltage connector consists of a female head (101) and a male head (102), wherein the two parts are tightly combined with an internal thread of the male head (102) into a whole through an external thread of the outer wall of the female head (101); it is characterized in that
The female head (101) comprises five parts, namely a cathode (201), an outer insulating part (202), an intermediate electrode (203), an inner insulating part (205) and an anode (204); the cathode (201), the outer insulating piece (202), the middle electrode (203), the inner insulating piece (205) and the anode (204) are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axis of the female head (101);
the cathode (201) is hollow cylindrical, and the top and the bottom are both open; the bottom is provided with an inner boss which faces the inside of the cathode (201), the inner boss is an annular body with a certain thickness, and the inner boss is used for blocking the outer insulating piece (202) so as to achieve the purpose of transmitting fastening force; the outer wall of the cathode (201) extends from the lower part to the top and is provided with external threads connected with the male head (102);
the outer insulating piece (202) is a hollow cylinder, the inner hole of the outer insulating piece is a step hole structure formed by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the outer insulating piece (202) are open; the diameter of the small hole is slightly smaller than that of the large hole; the outer layer insulator (202) is completely embedded into the inner cavity of the cathode (201), the top of the outer layer insulator is flush with the top of the cathode (201), and the bottom of the outer layer insulator is blocked by an inner boss of the cathode (201); the outer wall of the outer insulating piece (202) is tightly matched with the inner wall of the cathode (201);
the middle electrode (203) is a hollow cylinder and is inserted into the outer insulating part (202) from top to bottom, the outer diameter of the middle electrode is consistent with the diameter of a large hole of the outer insulating part (202) or slightly smaller than the diameter of the outer insulating part (202), the middle electrode is convenient to insert, and the outer wall of the middle electrode (203) is tightly matched with the inner wall of the outer insulating part (202); the inner hole of the electrode is a step hole structure formed by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the middle electrode (203) are opened; the middle electrode (203) is embedded in the large hole of the outer layer insulating piece (202), the top of the middle electrode (203) is kept at a certain distance from the top of the outer layer insulating piece (202), and the bottom of the middle electrode is contacted with the bottom surface of the large hole of the outer layer insulating piece (202);
the inner insulating part (205) is a hollow cylinder, the inner hole is a step hole structure formed by a large hole and a small hole, the large hole is arranged at the upper part, the small hole is arranged at the lower part, and the upper end and the lower end of the inner insulating part (205) are open; the outer diameter of the inner insulating part (205) is consistent with the large hole of the middle electrode (203) or slightly smaller than the large hole of the middle electrode (203), so that the inner insulating part (205) can be conveniently inserted into the large hole of the middle electrode (203) from top to bottom, and the outer wall of the inner insulating part (205) is tightly matched with the inner wall of the middle electrode (203); the top of the internal insulating piece (205) is kept at a certain distance from the top of the middle electrode (203), and the bottom of the internal insulating piece is contacted with the bottom surface of the big hole of the middle electrode (203);
the anode (204) is of a solid disc structure and is positioned in the large hole of the inner insulating piece (205), and the bottom surface of the anode is contacted with the bottom surface of the large hole of the inner insulating piece (205); the center of the anode (204) is arranged on the axis of the female head (101), and a certain distance exists between the outer circumference of the anode (204) and the inner wall surface of the small hole of the internal insulator (205), so that the assembly is convenient;
the male (102) comprises an external connecting piece (207), a cathode external connecting piece (206), an external insulating piece (208), an intermediate electrode (209), a spring (212), an inner insulating piece (211) and an anode (210); the external connecting piece (207), the cathode external connecting piece (206), the external insulating piece (208), the middle electrode (209), the spring (212), the inner insulating piece (211) and the anode (210) are all in axisymmetric structures, and the axes of the axisymmetric structures are coincident and are the axis of the male head (102);
the external connecting piece (207) is a hollow cylinder with internal threads, the internal threads are positioned at the position that the inner walls of the internal threads extend to the bottom from the middle upper part, the top end of each internal thread is designed with an internal boss structure, the internal boss faces the inside of the external connecting piece (207), and is an annular body with a certain thickness, and the internal boss is used for blocking the cathode external connecting piece (206) and preventing the cathode external connecting piece from falling; the internal thread is matched with the external thread at the top of the cathode (201) in the female head (101);
the outer insulating part (208) is a hollow cylinder, the upper end and the lower end are open, an annular boss is arranged near the upper part, the annular boss is kept at a certain distance from the upper end of the outer insulating part (208), and the maximum diameter of the annular boss is consistent with the inner diameter of the outer connecting part (207) or slightly smaller than the inner diameter of the outer connecting part (207); the external insulating piece (208) is conveniently inserted into the external connecting piece (207) from bottom to top, so that the external insulating piece (208) and the external connecting piece (207) form tight fit at the annular boss, and the positions of the external insulating piece and the external connecting piece are kept relatively fixed;
the middle electrode (209) is a hollow cylinder with an inner boss on the upper part and an outer boss on the lower part, and the inner boss and the outer boss are just positioned at the upper end and the lower end of the hollow cylinder; the outer diameter of the outer boss is consistent with the outer diameter of the bottom of the outer insulating piece (208), the outer diameter of the middle electrode (209) is consistent with the inner diameter of the outer insulating piece (208) or slightly smaller than the inner diameter of the outer insulating piece (208), so that the middle electrode (209) can be conveniently assembled into the inner hole of the outer insulating piece (208) from bottom to top;
the spring (212) is positioned in the middle electrode (209), and the top of the spring is contacted with the bottom of the boss in the middle electrode (209); the outer diameter of the spring (212) is consistent with the inner diameter of the middle electrode (209) or slightly smaller than the inner diameter of the middle electrode (209), so that the spring (212) is conveniently arranged in a large hole of the middle electrode (209);
the inner insulating piece (211) is of a hollow cylinder structure with an outer boss at the top; the maximum diameter of the outer boss is consistent with the inner diameter of the middle electrode (209) or slightly smaller than the inner diameter of the middle electrode (209), so that the inner insulating piece (211) is conveniently arranged in the middle electrode (209), and the inner insulating piece (211) is arranged in the middle electrode (209) and below the spring (212); the outer diameter of the inner insulating piece (211) is smaller than the maximum diameter of the outer boss of the inner insulating piece;
the anode (210) is of a hollow cylinder structure, the outer diameter of the anode is identical to that of the inner insulating piece (211), and the anode is arranged at the bottom of the inner insulating piece (211) and fixedly connected with the inner insulating piece (211).
2. The three-core high voltage connector according to claim 1, wherein:
the outer diameter of the cathode (201) is 16-22 mm, and the diameter of the inner cavity is 13-18 mm;
the diameter of the large hole of the outer insulating piece (202) is 11-16 mm, and the depth is 40-60 mm; the diameter difference between the small holes and the large holes is 1-3 mm; the depth of the small hole is 10-30 mm;
the diameter of the large hole of the middle electrode (203) is 8-12 mm, and the depth is 20-40 mm; the diameter of the small hole is 7-11 mm, and the depth is 1-3 mm;
the diameter of the large hole of the internal insulating piece (205) is 6-10 mm, and the depth is 10-20 mm; the diameter of the small hole is 4-6 mm, and the depth is 10-15 mm; the top of the inner insulator (205) is 1-3 mm away from the top of the middle electrode (203);
the outer diameter of the anode (204) is 4-6 mm, and the height is 1-3 mm.
3. The three-core high voltage connector according to claim 2, wherein:
the outer diameter of the cathode (201) is 18mm, and the diameter of the inner cavity is 15mm;
the diameter of the large hole of the outer layer insulating piece (202) is 13mm; the depth is 50mm; the diameter difference between the small holes and the large holes is 1mm; the depth of the small hole is 15mm;
the diameter of the large hole of the middle electrode (203) is 10mm, the depth is 30mm, the diameter of the small hole is 9mm, and the depth is 2mm; the top of the middle electrode (203) is 20mm away from the top of the outer layer insulator (202);
the inner insulator (205) has a major hole diameter of 8mm; the depth is 15mm; the diameter of the small hole is 5mm; the depth of the small hole is 13mm; the top of the inner insulator (205) is 2mm from the top of the middle electrode (203);
the anode (204) had an outer diameter of 5.5mm and a height of 2mm.
4. The three-core high voltage connector according to claim 1, wherein: the male head (102) further comprises a cathode external connector (206), wherein the cathode external connector (206) is a hollow cylinder with an outer boss at the bottom; the maximum diameter of the outer boss is identical with the inner diameter of the external connecting piece (207) or slightly smaller than the inner diameter of the external connecting piece (207), so that the cathode external connecting piece (206) is conveniently hung on the inner boss of the external connecting piece (207), and the inner hole diameter of the cathode external connecting piece (206) is 11-16 mm.
5. The three-core high voltage connector according to claim 4, wherein: the diameter of the inner hole of the cathode external connector (206) is 13mm.
6. The three-core high voltage connector according to claim 1, wherein:
the external diameter of the external connecting piece (207) is 20-24 mm; the length of the external connecting piece (207) is 20-40 mm;
the inner diameter of the outer insulating piece (208) is 8-12 mm; the minimum diameter of the annular boss is 10-14 mm;
the inner diameter of the intermediate electrode (209) is 6-10 mm; the inner diameter of the inner boss is 4-8 mm;
the outer diameter of the inner insulating piece (211) is 1-2 mm less than the maximum diameter of the outer boss; the inner diameter of the inner insulating piece (211) is 4-6 mm;
the inner diameter of the anode (210) is 1-3 mm.
7. The three-core high voltage connector according to claim 6, wherein:
the outer diameter of the external connecting piece (207) is 22mm; the external connection (207) has a length of 30mm;
the inner diameter of the outer insulator (208) is 10mm; the minimum diameter of the annular boss is 12mm;
the inner diameter of the intermediate electrode (209) is 8mm; the inner diameter of the inner boss is 6mm;
the outer diameter of the inner insulating member (211) is 1mm less than the maximum diameter of the outer boss thereof; the inner diameter of the inner insulating member (211) is 5mm;
the anode (210) had an inner diameter of 2mm.
8. The three-core high voltage connector according to claim 1, wherein the outer insulation member (202) and the inner insulation member (205), the outer insulation member (208), and the inner insulation member (211) are composed of a high temperature resistant insulation material.
9. The three-core high voltage connector according to claims 1 to, wherein the entire connector is connected in the following manner: the external thread of the cathode (201) of the female head (101) is connected with the internal thread of the external connecting piece (207) in the male head (102); screwing the female head (101) into the male head (102) from bottom to top; during the screw tightening process, the anode (204) of the female head (101) is in initial contact with the anode (210) of the male head (102); as the threads continue to tighten, the spring (212) compresses; when the spring (212) is compressed to a certain degree, the middle electrode (203) of the female head (101) is contacted with the middle electrode (209) of the male head (102); because the middle electrode (203) of the female head (101) and the cathode (201) realize force transmission through the boss, the middle electrode (209) of the male head (102) and the external connecting piece (207) realize force transmission through the boss, the contact force between the middle electrode (203) and the middle electrode (209) is continuously enhanced along with the continuous screwing of the screw thread; finally, the three electrodes corresponding to the male head and the female head are respectively and reliably connected.
CN202210113304.3A 2022-01-29 2022-01-29 Three-core high-voltage connector Active CN114512839B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201812750D0 (en) * 2018-08-06 2018-09-19 Siemens Ag Connector and method of manufacture
CN109546492A (en) * 2018-12-20 2019-03-29 中国人民解放军国防科技大学 High-voltage coaxial cable connector
CN212648617U (en) * 2020-08-31 2021-03-02 东莞市隆宏五金科技有限公司 Formula connecting piece is inhaled to charging wire magnetism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201812750D0 (en) * 2018-08-06 2018-09-19 Siemens Ag Connector and method of manufacture
CN109546492A (en) * 2018-12-20 2019-03-29 中国人民解放军国防科技大学 High-voltage coaxial cable connector
CN212648617U (en) * 2020-08-31 2021-03-02 东莞市隆宏五金科技有限公司 Formula connecting piece is inhaled to charging wire magnetism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
变流器常用电连接器接触性能及可靠性分析;梁志伟;陈南波;;机车电传动(01);全文 *

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