CN1890841A - cable connector - Google Patents

Abstract

An electric cable connector (10) is provided as a metal tape formed into a radially-resilient helix, which preferably has a roughened inner surface (18). The connector may be screwed onto the stranded conductors (20) of cable (22) at an end thereof, and this action tends to remove any oxide film on the conductors. The inwards pressure of the connector (10) enhances current equalisation between the conductive strands of the cable.

Description

Cable connector

Technical field

The present invention relates to a kind of cable connector, particularly relate to and be used for power cable particularly in generating, electric power transfer or distribute its conductor cross-sectional area of using relatively large for example greater than 10mm ²The connector of cable.

Background technology

For example for for cable provides terminal, can provide and being connected of cable by bolt locking type connector (bolt-on connector) or by compression connector (crimped connector).Though they are successfully used, but need instrument, as screwdriver or crimping tool.

Summary of the invention

The objective of the invention is to provide in simpler mode the arrangements of electric connection of cable, it is for having relatively large cross-sectional area as greater than 5mm ²Or greater than 10mm ²With up to 16mm ²Or up to 25mm ²Or up to 35mm ², for example 30 or 50 to 100 amperes or higher conductor are particularly useful can to carry relatively large electric current in use.

According to an aspect of the present invention, provide a kind of cable connector, comprised metal tape, the helix that described metal tape is reeled and radially had resilience force to form.The meaning of " band " refers to that its width is at least 2 times of its thickness and is preferably 3 to 5 times of its thickness at least particularly 10 times or more times elongated bands of its thickness, as can being understood easily, as long as its thickness is enough to make that band has enough hardness and the resilience force that is used for this purpose by those skilled in the art.It should be understood that each circle of helix is arranged to such an extent that can relative to each other move and is not secured together at their edge or lap place in order " directly upwards to have resilience force ".

Connector of the present invention need not to use any special tool(s) just can be applied on the exposure conductor of cable, thereby the operator only utilizes hand just the helical form connector can be turned round or is screwed on the cable.In addition, the helical metal band is turned round the action automated friction on the conductor and cleared up conductor, for example removed any oxide layer that may be formed on conductive surface.Should be appreciated that compare with compression connector with the screw lock formula, this can produce good electrical connection usually, and need not to clear up separately cable conductor.

Connector can be installed in cable end, thinks that cable provides terminal, and the insulated cable that perhaps can peel off skin along the centre connects midway, for example is used for forming branch.

The resilient nature of metal tape has guaranteed to form tight fit on cable conductor, thereby and has realized good electrical connection.

Connector of the present invention is beneficial especially when using with stranded conductor, thereby distributes equal because it forces twisted wire well to contact the electric current that flows through these lines each other.

The helical structure of connector also makes it naturally to the conductor of different-diameter of great use, thereby has reduced the number of connectors of stock.Therefore, can closely comply with conductor for various diameters.

Preferably, helix is taper, and can be classification or be continuous along at least a portion of connector length.Should be appreciated that taper helps connector is installed on the cable conductor, and help to clear up conductive surface.In addition, this structure helps the screw mechanism of resilience to have scope capacitation (range taking ability).

Improved when connector is coupled to conductive surface the cleaning to conductive surface, if the rough inner surface of band, for example Dai inner surface is formed and has netted or have the structure of indentation.

The present invention also provides a kind of cable that this connector is installed thereon, make reliably to be electrically connected with cable conductor, these conductors such as copper or aluminium, it can be stranded.

The present invention also provides a kind of method of making the cable arrangements of electric connection, wherein the conductor of cable be expose and connector of the present invention be installed on the conductor of cable.

Description of drawings

To and one embodiment of the present of invention be described with reference to the drawings by example now, wherein:

Fig. 1 is the end view of cable connector;

Fig. 2 is the end-view of connector, shows its inner surface; With

Fig. 3 is the connector figure of Fig. 1 and 2, and connector has been mounted to such an extent that stop the stranded conductor of cable.

Embodiment

With reference to the accompanying drawings, cable connector 10 is that 4.7mm, thickness are that the copper strips of 0.7mm forms by width, and it forms 6.25 millimeters of minimum diameters, 9.0 millimeters of maximum inner diameters, entire length is 26.7 millimeters helix.

Each circle of connector 10 is adjacent to each other basically, and before the circle 14 that intermediate diameters is set, along diameter substantially constant on the length of the 24mm of first 12, the diameter of the last circle 16 at connector 10 other end places is bigger.The inner surface 18 of connector 10 is to be configured as (contoured) to provide network structure along its whole degree.

Fig. 3 shows the connector 10 on the stranded conductor 20 of the exposure that is screwed onto cable 22.

Should be appreciated that the external diameter of stranded conductor 20 bundles is greater than the maximum inner diameter of connector 10, connector 10 utilizes the guiding of the circle 16 of its maximum to be screwed on the free end of conductor 20.

The elasticity of screwed union 10 is such, promptly, by being screwed to connect device 10, top circle 16 forces it to expand on the end of conductor 20 bundles, the outer surface of the rough inner-surface 18 friction twisted wires 20 of connector 10, thus remove any oxide on it and guaranteed excellent electric contact between the conductor 20 of connector 10 and cable 22.

Connector of the present invention is applicable to up to 16mm ²With the cable less than 100 amperes current capacity, it can comprise solid conductor, and for example also is applicable to bigger cable, and it can form up to 25mm ², even 35mm ², the carrying the stranded conductor of electric current up to 140 amperes.

Connector is applicable to specific application, for example, is applicable to stop 2.5mm ²To 3.5mm ²The aluminium or the copper conductor that use with specified 140 amperes distribution bus bars, or be applicable to specified 200 amperes of 2.5mm that bus is used ²To 50mm ²Conductor.

This bus can comprise that 10 electrically contact the position, provide from the connection of wall scroll service cable to 9 tap.Alternatively, if 10 position arrangements become two groups, 5 every group, then per two points of power supply can be used for four taps.

Claims (17)

1, a kind of cable connector comprises metal tape, the helix that described metal tape is reeled and radially had resilience force to form.

2, cable connector according to claim 1, wherein helix is taper.

3, cable connector according to claim 2, wherein the taper of helix is classification.

4, according to claim 2 or 3 described cable connectors, wherein the taper of helix is continuous along at least a portion of its length.

5, according to each described cable connector in the aforesaid right requirement, at least a portion inner surface of wherein said band is coarse.

6, cable connector according to claim 5, wherein Dai inner surface comprises network structure.

7, cable connector according to claim 5, the inner surface of wherein said band is the structure of band indentation.

8, according to each described cable connector in the aforesaid right requirement, wherein said helix has the conductor cross-sectional area of being applicable to greater than 10mm ²The size and dimension of power cable.

9, a kind of cable connector that is described with reference to the drawings in as mentioned.

10, a kind of cable that has according to each described connector in the aforesaid right requirement, wherein connector is installed on the electric conductor of cable, and conductor preferably has greater than 10mm ²Cross-sectional area.

11, cable according to claim 10, wherein its conductor is a lay configuration.

12, according to claim 10 or 11 described cables, wherein connector is installed in the end regions of conductor basically, thinks that it provides terminal.

13, a kind of basically as mentioned in described with reference to the accompanying drawings cable with connector mounted thereto.

14, a kind of method of making the arrangements of electric connection of cable, wherein the electric conductor of cable is exposed, and mounted thereto according to each described connector among the claim 1-9, described conductor preferably has greater than 10mm ²Cross-sectional area.

15, method according to claim 14, wherein connector is screwed to the end regions of conductor, thereby has stopped cable.

16, according to claim 14 or 15 described methods, wherein said conductor is a lay configuration.

17, a kind of basically with the method for the arrangements of electric connection of described with reference to the accompanying drawings manufacturing cable above.

Images