CN112366461A - Microneedle type lead connecting device - Google Patents

Microneedle type lead connecting device Download PDF

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Publication number
CN112366461A
CN112366461A CN202011346434.9A CN202011346434A CN112366461A CN 112366461 A CN112366461 A CN 112366461A CN 202011346434 A CN202011346434 A CN 202011346434A CN 112366461 A CN112366461 A CN 112366461A
Authority
CN
China
Prior art keywords
conductor
needle
conductive alloy
wire
alloy micro
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.)
Pending
Application number
CN202011346434.9A
Other languages
Chinese (zh)
Inventor
李国胜
罗福玲
洪雯
古小琴
陶建武
赵然
霍明
万琦
许嘉诚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Wuhan Electric Power Technical College
Original Assignee
State Grid Corp of China SGCC
Wuhan Electric Power Technical College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Wuhan Electric Power Technical College filed Critical State Grid Corp of China SGCC
Priority to CN202011346434.9A priority Critical patent/CN112366461A/en
Publication of CN112366461A publication Critical patent/CN112366461A/en
Pending legal-status Critical Current

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2406—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation having needles or pins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/07—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being of the same type but different sizes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2475—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by screws, nuts or bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting 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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections

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  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

The invention discloses a micro-needle type lead connecting device which comprises an upper shell, a lower shell, a plurality of conductive alloy micro-needles and a conductor, wherein the upper shell is connected with the lower shell through a fastener; the lower shell is provided with a plurality of wire grooves, wires to be connected are placed in the wire grooves, and the lower surface of the upper shell can press the wires tightly; the conductor is arranged in the lower shell; the conductive alloy micro-needle is vertically arranged, the lower end of the conductive alloy micro-needle is fixedly connected with the conductor, the upper end of the conductive alloy micro-needle extends into the conductor groove, and the conductive alloy micro-needle penetrates through the insulating layer of the conductor and then is inserted into the bare conductor of the conductor. The invention has the beneficial effects that: the conductive alloy micro-needle is made of the high-strength alloy material, penetrates into the insulating layer of the lead and then is inserted into the bare conductor to be in good contact with the bare conductor, so that the electrical contact area of the conductive alloy micro-needle with the main lead and the auxiliary lead is ensured, and the electrical conduction capability between the main lead and the auxiliary lead is improved.

Description

Microneedle type lead connecting device
Technical Field
The invention relates to a wire connection technology, in particular to a micro-needle type wire connection device.
Background
In electrical engineering, in particular in electrical line engineering, the connection of two insulated wires or bare conductors is very common. When the two wires are connected, the mechanical tensile strength, the electrical conduction capability and the electrical insulation strength between the two wires all meet the requirements under the condition of ensuring the electrical safety of operators. For convenience of description, the incorporated conductive wire is referred to as a main conductive wire, and the incorporated conductive wire is referred to as an auxiliary conductive wire. At present, the connection of a main lead and an auxiliary lead on site is carried out by the following three methods.
The first connection method comprises the following steps: the main conductor is a conductor which is in power-on operation, the auxiliary conductor is a conductor to be connected into a power-on circuit (a conductor to be connected with power), and in this case, the connection is usually performed by adopting a direct cross connection mutual winding method, a binding method or a branch T connection method of a main stranded conductor and an auxiliary stranded conductor. This connection method has the following problems: the high-altitude live-wire operation is extremely unsafe, the technical level requirement on operators is very high, the mechanical tensile strength cannot meet the requirement, and in the 'binding method' of the main wire and the auxiliary wire, the electrical conduction capability cannot meet the requirement, so that poor contact between the main wire and the auxiliary wire often occurs, and even oxidation and burning faults of the connecting part occur.
The second connection method is as follows: and the main conductor and the auxiliary conductor are connected by utilizing the parallel groove clamp. This method of connection is simple, but also has the following problems: the mechanical tensile strength, the electric conduction capability or the connection impedance value between the main lead and the auxiliary lead are difficult to meet the specified requirements, and the main lead and the auxiliary lead are bare leads. According to the relevant literature, the actual electrical contact area is only about 7% of the nominal contact surface.
The third connection method is as follows: when the main lead and the auxiliary lead are connected, only the auxiliary lead is required to be manufactured with a wire end and then electrified and ignited by utilizing a lengthened insulating operating rod; the drawbacks of this connection method are the same as in the second field case.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a microneedle type lead wire connector having a high electrical conductivity.
The technical scheme adopted by the invention is as follows: a micro-needle type lead connecting device comprises an upper shell, a lower shell, a plurality of conductive alloy micro-needles and a conductor, wherein the upper shell is connected with the lower shell through a fastener; the lower shell is provided with a plurality of wire grooves, wires to be connected are placed in the wire grooves, and the lower surface of the upper shell can press the wires tightly; the conductor is arranged in the lower shell; the conductive alloy micro-needle is vertically arranged, the lower end of the conductive alloy micro-needle is fixedly connected with the conductor, the upper end of the conductive alloy micro-needle extends into the conductor groove, and the conductive alloy micro-needle penetrates through the insulating layer of the conductor and then is inserted into the bare conductor of the conductor.
According to the scheme, insulating grease is filled in the wire groove of the lower shell; after the conductive alloy micro-needle punctures the insulating layer of the conducting wire, the insulating grease permeates into the gap between the conductive alloy micro-needle and the insulating layer.
According to the scheme, the fastening piece comprises a plurality of bolts and nuts, the bolts are evenly distributed along the circumferential direction of the upper shell and the lower shell at intervals, the nuts are matched with the bolts, and the upper shell and the lower shell are connected through the bolts.
According to the scheme, the conductive alloy micro-needle is made of a high-strength alloy material.
According to the scheme, the diameter of the conductive alloy micro-needle is 80-120 nanometers.
According to the scheme, the wire guide groove is an arc-shaped groove.
According to the scheme, the joint of the upper shell and the lower shell is additionally provided with the insulating sealing gasket, and the outer side surfaces of the upper shell and the lower shell are coated with the insulating protective sleeves.
According to the above scheme, go up the casing and be the cuboid structure with lower casing, the two is equallyd divide and is adopted insulating engineering plastics preparation respectively.
The invention has the beneficial effects that:
1. according to the invention, the conductive alloy micro-needle is made of a high-strength alloy material, penetrates into the insulating layer of the lead and then is inserted into the bare conductor to be in good contact with the bare conductor, so that the electrical contact area of the conductive alloy micro-needle with the main lead and the auxiliary lead is ensured, and the electrical conduction capability between the main lead and the auxiliary lead is improved; the conductive alloy micro-needle has high mechanical strength and hardness, is simple and labor-saving to penetrate through the insulating layer of the lead, can be stably inserted into the bare conductor of the lead and is reliable in connection.
2. According to the invention, the insulating grease is filled in the wire groove, and after the conductive alloy micro-needle pierces the insulating layer of the wire, the insulating grease permeates into the gap between the conductive alloy micro-needle and the insulating layer, so that the insulating effect is achieved, the sealing effect is also achieved, and the whole structure is protected. The insulating pads or insulating protective sleeves which have insulating effect are respectively arranged at the joint of the upper shell and the lower shell and on the peripheral surface of the whole device, so that the external insulating strength of the main wire and the auxiliary wire after connection is improved.
3. The upper shell and the lower shell are connected through the bolt, and the two sides of the bolt are symmetrically arranged, so that the mechanical tensile strength between the main wire and the auxiliary wire is improved, and meanwhile, the twisting deformation of the wires at the connecting part can be prevented.
4. The high-strength alloy material for producing the conductive alloy micro-needle is less in consumption, and the production cost of the conductive alloy micro-needle is low. The casing adopts the preparation of insulating engineering plastics, and whole device is adaptable multiple adverse circumstances, does not fear the windy and blowing, the rain is beaten, the solarization, limiting temperature, thunderbolt, long service life.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a front view of the present embodiment.
Fig. 3 is a schematic structural diagram of the lower housing in this embodiment.
Fig. 4 is a schematic diagram of the working state of the embodiment.
Wherein: 1. an upper housing; 2. a lower housing; 3. a wire guide groove; 4. a conductive alloy microneedle; 5. an electrical conductor; 6. a bolt; 7. a nut; 8. insulating grease; 9. an insulating gasket; 10. an insulating layer.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
A micro-needle type lead connecting device as shown in fig. 1 comprises an upper shell 1, a lower shell 2, a plurality of conductive alloy micro-needles 4 and a conductor 5, wherein the upper shell 1 and the lower shell 2 are connected through a fastener; the lower shell 2 is provided with a plurality of wire grooves 3, wires to be connected are placed in the wire grooves 3, and the lower surface of the upper shell 1 can press the wires; the conductor is arranged in the lower shell 2; the conductive alloy micro-needle 4 is vertically arranged, the lower end of the conductive alloy micro-needle 4 is fixedly connected with the electric conductor 5, the upper end of the conductive alloy micro-needle 4 extends into the conductor groove 3, and the conductive alloy micro-needle penetrates into a bare conductor of the conductor after penetrating the insulating layer 10 of the conductor.
Preferably, the conductor groove 3 of the lower shell 2 is filled with insulating grease 8; after the conductive alloy micro-needle 4 pierces the insulating layer 10 of the lead, the insulating grease 8 permeates into the gap between the conductive alloy micro-needle 4 and the insulating layer 10, and plays a role in insulation and sealing.
Preferably, the fastener comprises a plurality of bolts 6 which are uniformly distributed along the circumferential direction of the upper shell and the lower shell at intervals, and nuts 7 which are matched with the bolts 6; the upper and lower shells are connected through the bolt 6, and along with the continuous approach of the upper and lower shells, the upper shell 1 continuously compresses the wire in the wire groove 3, and the conductive alloy micro-needle 4 punctures the insulating layer 10 of the wire, as shown in fig. 4.
Preferably, the conductive alloy micro-needle 4 is made of a high-strength alloy material, preferably a high-strength copper alloy material. The diameter of the conductive alloy micro-needle 4 is 80-120 nanometers.
Preferably, an insulating sealing gasket 9 is additionally arranged at the joint of the upper shell and the lower shell, and an insulating protective sleeve is coated on the outer side surface of the upper shell and the lower shell.
Preferably, the wire groove 3 is an arc-shaped groove, which can adapt to wires with different diameters. Specifically, the wire groove 3 on the lower casing 2 is an arc-shaped half-groove body structure, and is arranged opposite to the half-groove body arranged on the upper casing 1, and the two half-groove bodies can be spliced into a whole groove body matched with the wire.
Preferably, go up casing 1 and casing 2 down and be the cuboid structure, the two is equallyd divide and is adopted insulating engineering plastics preparation respectively.
Examples
The micro-needle type lead connecting device shown in fig. 1-3 comprises an upper shell 1, a lower shell 2, four bolts 6, a nut 7, a conductor 5 and a plurality of conductive alloy micro-needles 4 which are matched with each other. The upper shell 1 and the lower shell 2 are both of rectangular structures made of insulating engineering plastics and are connected through four bolts 6 uniformly distributed at four corners. The wire groove 3 on the lower shell 2 is a half-groove body structure, and is arranged opposite to the half-groove body arranged on the upper shell 1, and the two half-groove bodies can be spliced into a whole groove body matched with the wire. The conductor 5 housed in the lower case 2 has a plate-like structure, and the longitudinal direction thereof coincides with the axial direction of the wire guide groove 3.
When the electric wire and the cable need to be connected, the main lead and the auxiliary lead are respectively sleeved in the two lead grooves 3. The nut 7 is rotated, the upper shell 1 moves downwards, the lower surface (bottom surface of the half-groove body) of the upper shell 1 compresses the conducting wire, the conductive alloy micro-needle 4 gradually punctures the insulating layer 10 of the conducting wire and is inserted into the bare conductor inside the conducting wire, and the electric conduction of the two conducting wires is realized through the electric conductor 5; meanwhile, the insulating grease around the conductive alloy micro-needle 4 overflows and then permeates into the gap between the conductive alloy micro-needle 4 and the insulating layer 10, as shown in fig. 4.
The invention has the following characteristics:
1) the conductive alloy micro-needle 4 has high mechanical strength.
The high-strength alloy material has extremely high strength and hardness, good plasticity, and excellent electrical conductivity, thermal conductivity, corrosion resistance, cold resistance, wear resistance and no ferromagnetism. By utilizing this characteristic, the conductive alloy micro-needle 4 made of high-strength alloy material has tensile strength>600MPa, hardness>200HV, sustainable clamping force and upsetting force>1.0×106N, can easily penetrate the insulating layer 10 of the wire and be inserted into the bare conductor in good contact therewith and firmly connected therewith.
2) The conductive alloy micro-needle 4 has extremely low resistance.
The high-strength alloy material has extremely high strength and hardness and good plasticity, the electric conductivity is more than 80% IACS, the electric conductivity is higher than that of the wire cores of the main wire and the auxiliary wire by several orders of magnitude, and the current density is extremely high. By utilizing the characteristic, the conductive alloy micro-needle 4 can be directly in good contact with a bare conductor inside the lead, the electrical contact area of the conductive alloy micro-needle 4 with the main lead and the auxiliary lead is ensured, the contact resistance between the main lead conductor and the auxiliary lead conductor is extremely small and can be ignored, so that the electrical conduction capability between the main lead conductor and the auxiliary lead conductor is extremely strong and greatly exceeds the current density of the original lead conductor.
3) And the installation and operation process is safe.
The high strength alloy may be forged into acicular materials having a diameter of about 100 nanometers. The conductive alloy micro-needles 4 enter the interior of the bare conductor without causing damage to the insulating layer 10. Insulating grease 8 in the metallic channel 3 also plays insulating and sealed effect, goes up casing 1 and casing 2 down and adopts high mechanical strength, high dielectric strength's material preparation, and the insulating pad is established to the two junction, therefore the external electric insulation strength after main traverse line, the auxiliary wire are connected is high, need not dampproofing and waterproofing.
4) The installation operation is simple and labor-saving.
The conductive alloy micro-needle 4 has extremely high mechanical strength and hardness, can easily penetrate through the insulating layer 10 of the main conductor and the auxiliary conductor to be inserted into a bare conductor, and is time-saving and labor-saving.
5) And the alloy micro-needle has low price.
With the wide application of high-strength alloy materials, the production cost of the conductive alloy micro-needle 4 is lower and lower; and the consumption of high-strength alloy materials is less, and the mass production with low cost can be realized.
6) The waterproof, sun-proof and lightning-proof effects.
The traditional connection mode of two wires or the connection mode through a wiring device has the defect of fear of water and sunshine, the invention is completely sealed, the shell is made of insulating engineering plastics, the whole device can adapt to various severe environments, and is free from fear of wind, rain, sunshine, extreme temperature and lightning stroke, and the service life is long.
7) The connector is suitable for connecting various wires.
The invention is suitable for connecting single-strand wires, multi-strand wires, electrified operating wires or cables and newly-installed wires or cables in power failure in any combination. The wire groove 3 is designed in an arc shape, is suitable for connecting wires with different sections, and does not need to strip the insulating layer 10.
8) And the mechanical tensile strength meets the requirement.
The four-bolt 6 has two sides installation mode, so that the main wire and the auxiliary wire are stressed uniformly, symmetrically and balanced, and the mechanical tensile strength is increased.
9) And can be repeatedly used.
The high-strength alloy material has extremely high strength, and the assembly and disassembly processes cannot cause the damage of all parts including the conductive alloy micro-needle 4, so that all parts can be repeatedly used, and the resource waste is avoided.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A micro-needle type lead connecting device is characterized by comprising an upper shell, a lower shell, a plurality of conductive alloy micro-needles and a conductor, wherein the upper shell is connected with the lower shell through a fastener; the lower shell is provided with a plurality of wire grooves, wires to be connected are placed in the wire grooves, and the lower surface of the upper shell can press the wires tightly; the conductor is arranged in the lower shell; the conductive alloy micro-needle is vertically arranged, the lower end of the conductive alloy micro-needle is fixedly connected with the conductor, the upper end of the conductive alloy micro-needle extends into the conductor groove, and the conductive alloy micro-needle penetrates through the insulating layer of the conductor and then is inserted into the bare conductor of the conductor.
2. A microneedle type wire connection device according to claim 1, wherein an insulating grease is filled in a wire groove of a lower case; after the conductive alloy micro-needle punctures the insulating layer of the conducting wire, the insulating grease permeates into the gap between the conductive alloy micro-needle and the insulating layer.
3. A microneedle type lead connecting device according to claim 1, wherein the fastening member comprises a plurality of bolts uniformly distributed at intervals in the circumferential direction of the upper and lower housings, and nuts engaged with the bolts, and the upper and lower housings are connected by the bolts.
4. A microneedle type wire connection device according to claim 1, wherein the conductive alloy microneedles are made of a high-strength alloy material.
5. The microneedle type wire connection apparatus according to claim 1, wherein the diameter of the conductive alloy microneedle is 80 to 120 nm.
6. A microneedle wire connection device according to claim 1, wherein the wire channel is an arcuate channel.
7. The microneedle type wire connecting device according to claim 1, wherein an insulating gasket is additionally provided at a joint between the upper and lower housings, and an insulating protective cover is coated on outer side surfaces of the upper and lower housings.
8. The microneedle type wire connection apparatus according to claim 1, wherein the upper case and the lower case are each of a rectangular parallelepiped structure, and are made of insulating engineering plastics, respectively.
CN202011346434.9A 2020-11-26 2020-11-26 Microneedle type lead connecting device Pending CN112366461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011346434.9A CN112366461A (en) 2020-11-26 2020-11-26 Microneedle type lead connecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011346434.9A CN112366461A (en) 2020-11-26 2020-11-26 Microneedle type lead connecting device

Publications (1)

Publication Number Publication Date
CN112366461A true CN112366461A (en) 2021-02-12

Family

ID=74533597

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011346434.9A Pending CN112366461A (en) 2020-11-26 2020-11-26 Microneedle type lead connecting device

Country Status (1)

Country Link
CN (1) CN112366461A (en)

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