CN203660087U

CN203660087U - Electrical connection terminal

Info

Publication number: CN203660087U
Application number: CN201320865537.5U
Authority: CN
Inventors: 尹茂林
Original assignee: Alcan Tianjin Alloy Products Co Ltd
Current assignee: General (tianjin) Aluminum Alloy Products Co Ltd
Priority date: 2013-12-17
Filing date: 2013-12-17
Publication date: 2014-06-18
Anticipated expiration: 2023-12-17

Abstract

The utility model provides an electrical connection terminal, which comprises a first part and a second part. The first part is tubular with one end sealed and the other end opened, and a conductor is inserted in the other end of the first part. The second part comprises a transition section and an extending section; the end face of one side of the transition section is combined with the end face of the sealed end of the first part; the extending section is sheet-shaped extending out from the end face of the other side, opposite to one side end face, of the transition section; the extending section extends along the direction of a central axis away from and parallel to the first part; a through hole whose trend is vertical with the direction of the central axis is arranged in the extending section; the first part is made of a kind of metal; the second part is made of another kind of metal; the transition section and the extending section are integrated different parts; and the first part and the second part are combined in a friction welding mode. The electrical connection terminal can be directly connected into wiring space of electrical components such as a circuit breaker and a motor, and an external transfer copper bar is not needed.

Description

Electric connection terminal

Technical field

The utility model relates to a kind of electric connection terminal, is specifically related to a kind of copper-aluminium transition electric connection terminal.

Background technology

Electric connection terminal is conductor adapting piece conventional in electrical engineering.In electrical engineering, conventionally need to come stube cable and electric switch, copper bar, the electric equipments such as load with electric connection terminal.Copper-aluminium transition electric connection terminal is the electric connection terminal that a kind of aluminum cable of commonly using is connected with copper conductor.Owing to connecting meeting between copper and aluminium in contact-making surface generation electrochemical reaction, so if use aluminum electric connection terminal to be connected with copper bar, need copper bar is zinc-plated.In North America, a lot of regulator cubicles have adopted zinc-plated copper bar, so can use the electric connection terminal of fine aluminium.But in China, a lot of copper bars are naked copper rows, not tin coating, so need to use copper-aluminium transition electric connection terminal.Current, the electrical equipment such as motor, circuit breaker in the time of product design, for meeting the design needs of product miniaturization, the spatial design of wiring more and more less.Simultaneously, most of circuit breaker designs for copper cable, in the time using aluminum material cable to connect, because needs use more heavy in section cable, so the binding post coordinating also correspondingly increases dimensionally, cause with the position volume of breaker connection and become large, cannot directly insert the wiring space of the elements such as circuit breaker, cause the situation that is not easy wiring.

For this situation, in the time of wiring, often use switching copper bar at present, the terminal of circuit breaker is drawn, to expand the wiring ability of electric connection terminal.

But, use switching copper bar, need on the one hand the extra switching copper bar of buying various models, increase cost; On the other hand, in use, increased extra wiring work.In some occasion, also cannot use switching copper bar because being subject to the restriction of wiring space.

Utility model content

In order to address the above problem, the utility model provides a kind of electric connection terminal, comprising:

Part I, this Part I is one end sealing and the open tubulose of the other end, and conductor inserts the other end of this Part I; And

Part II, this Part II comprises changeover portion and extension, the end face of a side end face of changeover portion and one end of Part I sealing is bonded to each other, and extension is the sheet of stretching out from the opposite side end face contrary with a side end face of changeover portion; And

Extension is along the direction extension of leaving and be parallel to the central axis of Part I, and extension is provided with the through hole of trend perpendicular to central axial direction;

Part I and Part II are that different metal materials is made;

The different piece that changeover portion and extension are integrated;

Being bonded to each other of Part I and Part II is the combination by the mode of friction welding.

Preferably, Part I is that aluminum or aluminum alloy is made, and Part II is that copper becomes.

Further, on the outer peripheral face at the place place being bonded to each other of Part I and described Part II, form a groove.

By such structure, can directly observe by naked eyes the combination situation of Part I and Part II, if by the combination of friction welding, can find out whether there is the defect such as slag inclusion, sand holes, thereby can judge the whether close and firm of combination of Part I and Part II.

Further, extension is less than or equal to the external diameter of Part I perpendicular to the Breadth Maximum of central axis.

By such structure, in the situation that wiring space is limited, extension can be directly connected with electric elements, do not need the extra switching copper bar that increases.

Preferably, the degree of depth of groove is 0.5～1mm.

Preferably, wherein, be the conductor of 16 square millimeters for nominal area of section, extension is 12～20mm perpendicular to the Breadth Maximum of central axis.

Preferably, wherein, be the conductor of 400 square millimeters for nominal area of section, extension is 30～40mm perpendicular to the Breadth Maximum of central axis.

By such structure, for the conductor of same nominal area of section, Part II is optimized in the size of existing national standard designing requirement, has reduced width, has increased thickness.More reasonably use the space at circuit breaker wiring position.Guaranteed the ability of the loaded current of terminal simultaneously.The length of Part I is less than the length of national standard designing requirement, under the premise that security is guaranteed, has effectively reduced cost.

Accompanying drawing explanation

Fig. 1 is the cutaway view of the copper-aluminium transition electric connection terminal of a preferred embodiment of the present utility model;

Fig. 2 is the vertical view of the copper-aluminium transition electric connection terminal of a preferred embodiment of the present utility model.

Embodiment

Introduce the utility model below in conjunction with accompanying drawing.Fig. 1 is the cutaway view of the copper-aluminium transition electric connection terminal of a preferred embodiment of the present utility model; Fig. 2 is the vertical view of the copper-aluminium transition electric connection terminal of a preferred embodiment of the present utility model.

As depicted in figs. 1 and 2, first preferred embodiment of the present utility model provides a kind of electric connection terminal, comprising:

Part I 1, this Part I 1 is the tubulose that one end 11 is sealed and the other end 12 is open, and conductor inserts the other end 12 of this Part I 1.In the present embodiment, Part I is cylindrical tube, and external diameter is D1.One end 11 of this Part I 1 is sealed, and on the other end 12, is provided with endoporus, and internal diameter is D2.The size of inner diameter D 2 is corresponding with the size of the nominal area of section of insertion conductor wherein.

Part II 2, this Part II 2 comprises changeover portion 21 and extension 22, the different piece that changeover portion 21 and extension 22 are integrated.Further, a side end face 211 of changeover portion 21 is bonded to each other with the end face 11 of one end sealing of Part I 1, and extension 22 is the sheet of stretching out from the opposite side end face contrary with a side end face 211 of changeover portion 21; And extension 22 is along the direction extension of leaving and be parallel to the central axis of Part I 1, and extension 22 is provided with the through hole 3 of trend perpendicular to central axial direction.

More specifically, in the present embodiment, as shown in Figure 1, through hole 3 is arranged on the thickness direction of extension 22 in the form of sheets.

Part I and Part II are that different metal materials is made.In the present embodiment, Part I 1 is made for aluminium alloy, and Part II 2 is that copper becomes.By such structure, in the time that electric connection terminal provided by the utility model is used for aluminum conductor, because aluminum conductor inserts the endoporus of the Part I 1 made of aluminium, thus not can due to material difference cause loose contact or use in produce the defects such as conduction is bad.

Being bonded to each other of Part I 1 and Part II 2 is the mode combination by friction welding.By the mode of utilizing friction welding, Part I 1 and Part II 2 are combined togather, can make welding region there is higher welding precision, and such welding manner can exert an influence to conductivity performance hardly.

Further, on the outer peripheral face at the place place being bonded to each other of Part I 1 and described Part II 2, form a groove 4.

Groove 4 can process by milling machine.Preferably, the depth S of groove 4 is 0.5～1mm.

By such structure, can directly observe by naked eyes the combination situation of Part I 1 and Part II 2.Further, in the utility model, Part I 1 and Part II 2 are bonded to each other by friction welding, thereby can directly find out and whether have the defect such as slag inclusion, sand holes, and then can judge that whether both combinations of Part I 1 and Part II 2 are firm, under larger shearing force effect, even rupture from generation gap, junction avoiding, and then cause the accidents such as cable is blown out, power-off.

Further, extension 22 is less than or equal to the D outer diameter 1 of Part I perpendicular to the Breadth Maximum W of central axis.

By such structure, in the situation that wiring space is limited, extension 22 can be directly connected with electric elements, do not need the extra switching copper bar that increases.

In the present embodiment, the nominal area of section of above-mentioned conductor is 16 square millimeters.Extension 22 perpendicular to central axis Breadth Maximum W be 12+/-0.5mm.The D outer diameter 1 of the cylindrical body 1 of Part I 1 is 15+/-0.3mm, and the inner diameter D 2 of cylindrical body 1 is 6(-0.2 ,+0.3) and mm.The depth S of groove 4 is 0.5～0.65cm.

Second preferred embodiment of the present utility model provides a kind of electric connection terminal, and in the present embodiment, the nominal area of section of above-mentioned conductor is 400 square millimeters.Extension 22 is 12+/-0.5mm perpendicular to the Breadth Maximum W of central axis.The D outer diameter 1 of the cylindrical body 1 of Part I 1 is 40+/-0.35mm, and the inner diameter D 2 of cylindrical body 1 is 26(-0.2 ,+0.3) and mm.The depth S of groove 4 is 0.5～1mm.

For guarantee electric connection terminal use time have enough ampacitys, electric connection terminal of the present utility model is optimized in extension 22 parts.Adopt on the one hand sheet or rectangle design, such design many circular design of the prior art of comparing can make, in the situation that sectional area is constant, to make width W narrower.On the other hand, the design of current circuit breaker is all to pursue the miniaturization of volume on width dimensions, and on thickness, due to the design feature of circuit breaker itself, leave very large space, so this miniaturization electric connection terminal is on the thickness of extension 22, with respect to traditional electric connection terminal, do the design that thickness increases, so, both guarantee ampacity, reasonably utilized again the wiring space of circuit breaker.

Described specific embodiment of the utility model above with reference to accompanying drawing, but the utility model is not limited to above-described embodiment.

For example, in the above-described embodiments, the Part I 1 of electric connection terminal is cylindrical tubular body, the extension 22 of Part II 2 is plates, but the utility model is not limited to this, and the Part I 1 of electric connection terminal can be also the tubular body of other shape, for example, profile is the tubular body of prism shape, or the tubular body of other various outer shape, as long as this tubular body is provided with the endoporus that can insert conductor.Extension 22 can be also other various shapes, and for example even other is irregularly shaped for blocks, and its shape can be determined according to the wiring space of the conductor shape that will connect and electrical equipment.

In the various embodiments described above, Part I 1 is made for aluminum material, and Part II 2 is copper one-tenth.But the utility model is not limited in this, those skilled in the art can and use needs according to actual design, select arbitrarily the material of Part I and Part II, and Part I 1 can be made of copper, Part II 2 can be made up of aluminum material, also can adopt as required other metal.

In the various embodiments described above, being bonded to each other of Part I 1 and Part II 2 be the mode combination by friction welding, but the utility model is not limited in this, those skilled in the art can and use needs according to actual design, select the combination such as explosive welding, high temperature vacuum brazing.

More than enumerate preferred embodiment of the present utility model, but the utility model is not limited to this, those skilled in the art can select according to actual needs, allly implement with identical technological means or for the interest field that following claim was contained, all do not depart from category of the present utility model but applicant's interest field.

Claims

1. an electric connection terminal, is characterized in that, comprising:

Part I, described Part I is one end sealing and the open tubulose of the other end, and conductor inserts the described other end of described Part I; And

Part II, described Part II comprises changeover portion and extension, the end face of described one end sealing of one side end face of described changeover portion and described Part I is bonded to each other, and described extension is the sheet of stretching out from the opposite side end face contrary with a described side end face of described changeover portion; And

Described extension is along the direction extension of leaving and be parallel to the central axis of described Part I, and described extension is provided with the through hole of trend perpendicular to described central axial direction;

Described Part I and described Part II are that different metal materials is made;

The different piece that described changeover portion and described extension are integrated;

Described in described Part I and described Part II, being bonded to each other is the mode combination by friction welding.

2. electric connection terminal as claimed in claim 1, is characterized in that, described Part I is that aluminum or aluminum alloy is made, and described Part II is that copper becomes.

3. electric connection terminal as claimed in claim 1 or 2, is characterized in that, on the outer peripheral face at the place place being bonded to each other described in described Part I and described Part II, forms a groove.

4. electric connection terminal as claimed in claim 3, is characterized in that, described extension is less than or equal to the external diameter of described Part I perpendicular to the Breadth Maximum of described central axis.

5. electric connection terminal as claimed in claim 4, is characterized in that, the degree of depth of described groove is 0.5～1mm.

6. electric connection terminal as claimed in claim 4, is characterized in that, wherein, is the described conductor of 16 square millimeters for nominal area of section, and described extension is 12～20mm perpendicular to the Breadth Maximum of described central axis.

7. electric connection terminal as claimed in claim 4, is characterized in that, wherein, is the described conductor of 400 square millimeters for nominal area of section, and described extension is 30～40mm perpendicular to the Breadth Maximum of described central axis.