CN112652912B

CN112652912B - Wiring terminal

Info

Publication number: CN112652912B
Application number: CN202011484775.2A
Authority: CN
Inventors: 郑小列; 包行方
Original assignee: Mjc Power Transmission And Distribution Equipment Jiangsu Co ltd
Current assignee: Mjc Power Transmission And Distribution Equipment Jiangsu Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2022-12-16
Anticipated expiration: 2040-12-16
Also published as: CN112652912A

Abstract

The invention discloses a wiring terminal, which relates to the field of electrical mechanical devices and comprises a base, wherein the base is provided with an axial extension direction, and a sealing groove is arranged on one end surface of the base in the axial direction; the insulating seats are arranged on the end faces of the two ends of the base in the axial direction; the wiring terminal is provided with an axial extension direction, penetrates through the insulating seats with the same layer number grade on the two sides of the base and is circumferentially distributed on the insulating seats with the same layer number grade on the two sides; the wiring ports are arranged at the end parts of two ends of the same wiring terminal, two wiring ports on the same wiring terminal are conducted through the wiring terminal, and the two wiring ports on the same wiring terminal are respectively positioned on the insulating bases on two sides with the same layer number grade; the invention also provides a separating part between adjacent wiring ports for protecting and isolating different wires, thereby preventing the wires from being wound due to touch between the wires.

Description

Wiring terminal

Technical Field

The invention relates to the field of electrical machinery, in particular to a wiring terminal.

Background

The connecting terminal is a product of accessories for realizing electrical connection, is applied for facilitating the connection of wires, and is actually a section of metal sheet sealed in an insulator (such as epoxy resin mixture), both ends of the metal sheet are provided with connecting ports for connecting the wires, and screws are used for fastening or loosening, such as two wires, which need to be connected sometimes and disconnected sometimes, and then the two wires can be connected by the terminal and disconnected at any time without welding or winding the two wires together, so that the connecting terminal is convenient and quick. But also suitable for interconnection of a large number of wires.

To special operating environment such as Gas Insulated Substation (GIS), high voltage combined electrical apparatus is when the wiring, one side has the Gas tightness demand, one side is the ordinary pressure, it has electrical insulation and withstand voltage effect to the binding post requirement, conventional binding post can't bear air chamber pressure and guarantee the leakproofness in the physical properties, if want to realize the interconnection between a large amount of wires on the binding post simultaneously needs certain design space, the wire is when inserting binding post's wiring port, the easy winding knot between the different wires leads to the wire in disorder not to be arranged in order.

Disclosure of Invention

In view of the above disadvantages of the prior art, the present invention is to provide a connection terminal, which meets the requirement of airtight installation of an electrical appliance in a special operating environment, and can be provided with more connection ports in the same size to electrically connect more wires, and a separation part is further provided between adjacent connection ports to protect and isolate different wires, thereby preventing the wires from being twisted due to contact with each other.

Provided is a connection terminal including:

the base is provided with an axial extension direction, and a sealing groove is arranged on one end face of the base in the axial direction;

the insulating seats are arranged on the end faces of the two ends of the base in the axial direction, the insulating seats on the two sides of the base are of a multilayer structure, and the number of layers of the insulating seats on the two sides is equal;

the wiring terminals are conductors, have axial extension directions, penetrate through the insulating seats with the same layer number grade on the two sides of the base and are circumferentially distributed on the insulating seats with the same layer number grade on the two sides;

the wiring ports are arranged at the end parts of two ends of the same wiring terminal, two wiring ports on the same wiring terminal are conducted through the wiring terminal, and the two wiring ports on the same wiring terminal are respectively positioned on the two side insulating bases with the same layer number grade;

the partition portion is arranged on the insulating base, and each wiring terminal side is provided with a partition portion used for being separated from other wiring terminals.

Optionally, a plurality of mounting holes are formed in the base, the mounting holes penetrate through end faces of two ends of the base in the axial direction, and the mounting holes are located on the outer side of the insulating base.

Optionally, the sealing groove is located between the mounting hole and the insulating base.

Optionally, the edge all is equipped with first circular arc transition in the opening part of seal groove, and the seal groove passes through first circular arc transition and base intercommunication.

Optionally, the multilayer structure is a stepped layered structure, the insulating base forms a plurality of terraces on end faces of two ends of the base in the axial direction, and the binding post penetrates through the terraces with the same layer number and level on two sides of the base.

Optionally, the radial cross-sectional areas of the terraces on different layers on the insulating base on the same side of the base are gradually reduced from the end close to the base to the end far away from the base.

Optionally, the separating portion includes a different-layer separating portion and a same-layer separating portion, the wiring ports between different layers of the ladder platforms located on the same side of the base are separated by the same-layer separating portion, and the wiring ports between the same layers of the ladder platforms are separated by the different-layer separating portion.

Optionally, the different-layer partition part is an outer wall of the step, and the same-layer partition part is a partition bump arranged between two adjacent wiring ports of the same-layer step;

the edge of each layer of halfpace of non-biggest radial cross section to and all be equipped with on the halfpace of minimum radial cross section keeps away from the terminal surface of adjacent one deck halfpace the partition is protruding to be touched, separates protruding adjacent that separates same one deck halfpace two wiring ports, and separate protruding axial direction radiation setting along the halfpace of touching.

Optionally, be equipped with the nock between two adjacent separation convexes of same layer to form and be used for holding the wire tip and separate the wiring mouth of adjacent wire, separate the one end tip that the convex contact is close to the halfpace line and be equipped with the transition of second circular arc, the transition of second circular arc with the nock intercommunication.

Optionally, separate protruding one end tip of keeping away from the halfpace of touching and be equipped with the first inclined plane that third circular arc transition and lean out the setting, first inclined plane with third circular arc transition intercommunication, third circular arc transition set up the inboard on first inclined plane, and the partition on each layer of halfpace of non-biggest radial cross section is protruding to touch the halfpace that enlarges the one-level through first inclined plane and radial cross section and is linked together, and the partition on the halfpace of minimum radial cross section is protruding to touch and is linked together through first inclined plane and this layer of halfpace, and the partition is protruding to be touched the one end of keeping away from the halfpace and is equipped with to the second inclined plane that the outer slope of partition sets up to the one end that is close to the halfpace.

The invention has the advantages that:

adopt special design structure, satisfy the gas tightness installation requirement of electrical apparatus under special operation environment, can set up more wiring ports on same size, in order to carry out the electrical connection between more wires, the symmetry has set up the insulating seat of echelonment on the both ends terminal surface of base axial direction, it has a plurality of terminals to link up on the terrace that is located the base both sides that is in symmetrical relation, and the both ends tip of every terminal is equipped with the wiring port of intercommunication each other, can insert many wires at the wiring port on each terrace like this, still set up the partition portion between the adjacent wiring port and protect and keep apart different wires, prevent to touch and produce the winding between wire and the wire, make can not mutual interference between the different wires disturb, insulating seat and base adopt insulating material vacuum casting to form, guarantee that terminal and insulator fully contact and bonding, and gas tightness, avoid the terminal that sets up on the insulating seat to drop, make the electrical connection performance of this binding post stable.

Drawings

FIG. 1 is a top view of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the region A in FIG. 1;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic view of a spaced apart male contact end in an embodiment of the invention;

FIG. 6 is a cross-sectional view of a separation tab in an embodiment of the invention;

FIG. 7 is a schematic cross-sectional view of one embodiment of a contact post in accordance with the present invention;

fig. 8 is a top view of another embodiment of the present invention.

Description of reference numerals:

1-a base; 11-mounting holes; 12-a seal groove; 121-first arc transition; 13-an insulating base; 131-a first landing; 132-a second landing; 133-a third landing; 134-a fourth landing; 135-a fifth landing; 136-a sixth landing;

2-a wiring port;

3-a binding post; 31-a concave groove; 32-convex ring;

4-separating the bumps; 41-arc mouth; 42-second arc transition; 43-third arc transition; 44-a first bevel; 45-second slope.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As an embodiment of the present invention, there is provided a connection terminal including:

the wiring terminals are conductors, have axial extension directions, penetrate through the insulating seats with the same layer number grade on two sides of the base and are circumferentially distributed on the insulating seats with the same layer number grade on two sides;

the partition portion sets up on the insulator seat, and every binding post side all is equipped with and is used for carrying out the spaced with other binding post the partition portion.

Through the design of this binding post, adopt special design structure, satisfy the gas tightness installation requirement of electrical apparatus under special operation environment, can set up more wiring ports on same size, in order to carry out the electrical connection between more wires, the symmetry has set up the insulating seat of echelonment on the both ends terminal surface of base axial direction, it has a plurality of terminals to link up on the terrace that is located the base both sides that is in the symmetric relation, and the both ends tip of every terminal is equipped with the wiring port of intercommunication each other, can insert many wires at the wiring port on every terrace like this, still set up the partition portion between the adjacent wiring port and protect and keep apart different wires, prevent to touch and produce the winding between wire and the wire, make can not mutual interference between the different wires, insulating seat and base adopt insulating material vacuum casting to form, guarantee that terminal and insulator fully contact and bonding, and gas tightness, avoid the terminal that sets up on the insulating seat to drop, make this binding post's electrical connection performance stable.

The terminal is described below with reference to preferred embodiments of the present invention.

Referring to fig. 1 and 3, the connection terminal includes:

the base 1 has an axial extension direction, and a sealing groove 12 is provided on one end face of the base 1 in the axial direction, and in the embodiment, the base 1 has two AB faces provided along the axial direction.

In the present embodiment, the sealing groove 12 is located between the mounting hole 11 and the insulating base 13, for example, the sealing groove 12 is provided on the surface a of the base 1, and the sealing groove 12 is provided in consideration of the mounting environment facing a pressure-tight airtight space, for example, in the mounting environment of a high-voltage combined electrical appliance in a gas insulated substation, so that the sealing groove 12 needs to be provided on one surface, and when the pressure of SF6 gas is 0 to 0.8MPa, the sealing groove 12 has good withstand voltage performance, and the mounting environment is normal pressure, and the sealing groove 12 does not need to be provided.

Insulating seat 13 sets up on 1 axial direction's of base both ends terminal surface, the 1 both sides of base insulating seat 13 is multilayer structure, and the number of piles of the insulating seat 13 of both sides equals, and in this embodiment, multilayer structure is the hierarchy of echelonment, and insulating seat 13 all forms a plurality of terraces on 1 axial direction's of base both ends terminal surface, and terminal 3 link up the terraces that 1 both sides number of piles level is the same of base, and the terraces can be discoid, prismoid form isothaplothes.

Referring to fig. 1, in a preferred embodiment, the radial cross-sectional areas of the terraces of different layers on the insulating base 13 located on the same side of the base 1 gradually decrease from the end close to the base 1 to the end far from the base 1, for example, two layers of terraces, i.e., a first terrace 131 and a third terrace 133, whose radial cross-sectional areas gradually decrease are provided on the surface a of the base 1, and correspondingly, two layers of terraces, i.e., a second terrace 132 and a fourth terrace 134, whose radial cross-sectional areas gradually decrease are provided on the surface B of the base 1.

The terminals 3, which are conductors, have an axial extending direction, penetrate through the insulating bases 13 with the same layer number grade on both sides of the base 1, and are circumferentially distributed on the insulating bases 13 with the same layer number grade on both sides, that is, a plurality of terminals 3 penetrate between the first step 131 and the second step 132, and a plurality of terminals 3 penetrate between the third step 133 and the fourth step 134, in this embodiment, the end surfaces of both ends of the terminals 3 are respectively flush with the end surfaces of the two through step.

Wiring port 2, the both ends tip of setting at same terminal 3, switch on through this terminal 3 between two wiring ports 2 on same terminal 3, two wiring ports 2 are located the same both sides insulator 13 of number of layers grade respectively on same terminal 3, also correspond the both sides halfpace of number of layers grade promptly, two wiring ports 2 on same terminal 3 are located first halfpace 131 and second halfpace 132 respectively and on third halfpace 133 and fourth halfpace 134 promptly.

The partition portion sets up on insulator seat 13, and every binding post 2 side all is equipped with and is used for carrying out the partitioned partition portion with other binding post 2.

Referring to fig. 1, the base 1 is provided with a plurality of mounting holes 11, the mounting holes 11 penetrate through end faces of two ends of the base 1 in the axial direction and are circumferentially distributed along an axis of the base 1, the mounting holes 11 are located outside the insulating base 13, and the mounting holes 11 are arranged to fix the connecting terminal at a certain position.

Referring to fig. 4, the inner edge and the outer edge of the opening of the sealing groove 12 are both provided with a first arc transition 121, the sealing groove 12 is communicated with the base 1 through the first arc transition 121, and the first arc transition 121 is disposed to meet the mold drawing requirement during mold forming.

Referring to fig. 1, 2 and 3, the partition includes a different-layer partition and a same-layer partition, the wiring ports 2 of different terraces on the same side of the base 1 are separated by the same-layer partition, and the wiring ports 2 of the same terraces are separated by the different-layer partition. The different layer partition part is the outer wall of the step, and the same layer partition part is a partition convex contact 4 arranged between two adjacent wiring ports 2 of the same layer of step. Specifically, the edge of each layer of landing (being first landing 131 and second landing 132) of non-biggest radial cross section to and all be equipped with on the terminal surface that adjacent one deck landing was kept away from to the landing (being third landing 133 and fourth landing 134) of minimum radial cross section and separate protruding 4 that touch, separate protruding 4 and separate two adjacent wiring ports 2 of same layer of landing, and separate protruding 4 that touch and outwards radiate the setting or radiate the setting along the radial direction of landing along the outer wall of landing.

Referring to fig. 2, an arc 41 is disposed between two adjacent separation convex contacts 4 on the same layer, and a wiring port for accommodating a wire end and separating adjacent wires is formed, a second arc transition 42 is disposed at one end of each separation convex contact 4 close to the axis of the landing, the second arc transition 42 is communicated with the arc 41, since the wiring ports of each wiring port 2 on the same layer are separated by the separation convex contacts 4 on both sides, different wires can be protected and isolated, and the wires are prevented from being twisted due to contact with each other, the wiring terminals 2 on different layers are separated by the separation convex contacts 4 on corresponding positions and outer walls of the landing between different layers, and the effects of protecting and isolating different wires can also be achieved.

Referring to fig. 5 and 6, a third arc transition 43 and a first inclined surface 44 which is obliquely arranged outwards are arranged at an end portion of the separating convex contact 4 far from the landing, the first inclined surface 44 is communicated with the third arc transition 43, the third arc transition 43 is arranged on the inner side of the first inclined surface 44, the separating convex contact 4 on each landing (i.e., the first landing 131 and the second landing 132) with the non-maximum radial cross section is communicated with the landing with the first-level enlarged radial cross section through the first inclined surface 44, the separating convex contact 4 on the landing (i.e., the third landing 133 and the fourth landing 134) with the minimum radial cross section is communicated with the landing through the first inclined surface 44, an included angle a exists between a tangent of the outermost side of the first inclined surface 44 and a contour line of the first inclined surface 44, the degree of the included angle a is between 3 degrees and 5 degrees, and a second inclined surface 45 which is obliquely arranged outwards from the separating convex contact 4 is arranged at an end of the separating convex contact 4 far from the landing. The third arc transition 43, the first inclined surface 44 and the second inclined surface 45 are all arranged to facilitate the access of the conductor to the corresponding connection port 2.

The insulating material which is prepared by mixing epoxy resin, aluminum oxide and a curing agent is filled between the binding posts 3, the insulating material adopts a vacuum pouring mode to form insulators, namely the main bodies of the insulating base 13 and the base 1, the insulation requirement is ensured, no bubble is required to be generated in the pouring process, preferably, the outer wall of the binding post 3 can be coated with interface glue, the full contact and adhesion with the insulators are ensured, the air tightness is ensured, and the binding post 3 arranged on the insulating base 13 is prevented from falling off. That is, the housing of the connection terminal with protection function has good high air pressure resistance, so that the connection terminal can bear the pressure of the air chamber and the sealing performance in physical performance, and needs to have electrical insulation and voltage resistance effects.

Referring to fig. 7, in one scheme, a concave groove 31 is formed in the middle of the terminal 3, the concave groove 31 is recessed toward the axis of the terminal 3 along the radial direction of the terminal 3, a plurality of convex rings 32 extending along the radial direction of the terminal 3 are arranged on the concave groove 31, and the arrangement of the concave groove 31 and the convex rings 32 can ensure the stability of the terminal 3 on the insulating base 13 formed by casting, so as to prevent the terminal 3 from falling off from the insulating base 13.

Referring to fig. 8, in another embodiment, the difference from the above embodiment is that four terminals 3 are respectively penetratingly disposed on two side steps with the same layer number level, that is, four connection ports 2 are disposed on each layer of step, according to actual requirements, a reasonable number of terminals 2 may be disposed between two adjacent terminals 3, and when the terminal is designed, at least one terminal 3 is disposed on two side steps with the same layer number level, that is, at least one terminal 2 is disposed on each layer of step.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A terminal, comprising:

the sealing structure comprises a base (1) and a sealing ring (12), wherein the base (1) has an axial extension direction, and one end face of the base (1) in the axial direction is provided with the sealing ring;

the insulating seats (13) are arranged on the end faces of the two ends of the base (1) in the axial direction, the insulating seats (13) on the two sides of the base (1) are of a multilayer structure, and the number of layers of the insulating seats (13) on the two sides is equal;

the binding post (3) is a conductor, has an axial extension direction, penetrates through the insulating seats (13) with the same layer number grade on two sides of the base (1), and is circumferentially distributed on the insulating seats (13) with the same layer number grade on two sides;

the wiring ports (2) are arranged at the end parts of two ends of the same wiring terminal (3), two wiring ports (2) on the same wiring terminal (3) are communicated through the wiring terminal (3), and the two wiring ports (2) on the same wiring terminal (3) are respectively positioned on two side insulating seats (13) with the same layer number grade;

the partition part is arranged on an insulating base (13), the partition part used for being separated from other wiring ports (2) is arranged beside each wiring port (2), a plurality of mounting holes (11) are formed in the base (1), the mounting holes (11) run through the end faces of the two ends of the base (1) in the axial direction, the mounting holes (11) are located in the outer side of the insulating base (13), a sealing groove (12) is located between the mounting holes (11) and the insulating base (13), a plurality of terraces are formed in the inner edge and the outer edge of the opening of the sealing groove (12), the sealing groove (12) is communicated with the base (1) through the first circular arc transition (121), the multilayer structure is a stepped hierarchical structure, the wiring terminal (3) runs through the terraces with the same number of layers on the two sides of the base (1), the radial cross-sectional areas of the terraces of different layers on the insulating base (13) on the same side are gradually far away from one end of the base (1), and the partition part of the same layer of the wiring terminal (1) is located between the same layer, and the partition part of the wiring stage (2) and the partition part and the wiring terminal part are gradually separated from one end of the same layer, the different-layer separating part is the outer wall of the step, and the same-layer separating part is a separating convex contact (4) arranged between two adjacent wiring ports (2) of the same-layer step; the edge of each layer of the step with the non-maximum radial cross section and the end surface of the step with the minimum radial cross section far away from the adjacent layer of the step are respectively provided with the separating convex contact (4), the separating convex contact (4) separates the adjacent two wiring ports (2) of the same layer of the step, the separating convex contacts (4) are arranged in a radiation way along the axial direction of the ladder platform, an arc opening (41) is arranged between two adjacent separating convex contacts (4) on the same layer, and form a wiring port for accommodating the end of the wire and separating the adjacent wires, a second arc transition (42) is arranged at the end part of one end of the separating convex contact (4) close to the step wire, the second arc transition (42) is communicated with the arc opening (41), a third arc transition (43) and a first inclined plane (44) which is obliquely arranged outwards are arranged at the end part of one end of the separating convex contact (4) far away from the step, first inclined plane (44) with third circular arc transition (43) intercommunication, third circular arc transition (43) set up the inboard at first inclined plane (44), the partition on each layer of halfpace of non-biggest radial cross section is protruding to be touched (4) and is linked together through first inclined plane (44) and the halfpace that radial cross section enlarges one-level, the partition on the halfpace of minimum radial cross section is protruding to be touched (4) and is linked together through first inclined plane (44) and this layer of halfpace, the partition is protruding to be touched (4) and is kept away from the one end of halfpace to be equipped with to separating the second inclined plane (45) that the slope set up outward of protruding touch (4) to the one end that is close to the halfpace.