CN2077597U

CN2077597U - Current connector of cylindrical terminal

Info

Publication number: CN2077597U
Application number: CN 90212347
Authority: CN
Inventors: 王孟晋
Original assignee: NANJING LINE ACCESSORIES MANUFACTURER
Current assignee: NANJING LINE ACCESSORIES MANUFACTURER
Priority date: 1990-06-14
Filing date: 1990-06-14
Publication date: 1991-05-22

Abstract

The utility model relates to the current connector of cylindrical terminals, which is used for the detachable connection of a cylindrical terminal of electric appliances for outputting current and an external conducting wire. The current connector belongs to a line connecting piece. The terminal clamping mechanism of the current connector is composed of an inside and outside casing tubes and a back nut, wherein, the inside casing tube is in multiple-flap shape; a tapered wall is sheathed between the inside and the outside casing tubes; the terminal is made to be clamp tightly by the inside casing tube through the radial component force generated by that the back nut extrudes the outside casing tube in axial direction. The current connector has good electrical contact with the cylindrical terminal, homogeneous radial stress of the terminal, large clamping force and firm connection.

Description

Current connector of cylindrical terminal

The utility model is about the binding post of the electrical equipment projected current detachable jointing between cylindrical binding post and the outer lead particularly, belongs to line connector.

Various high and low pressure electrical equipment such as transformer, sleeve pipe are all by the binding post projected current, this binding post has screw shaped, perforated plate shape and cylindrical kinds such as (comprising round bar shape and tubular), various binding posts all are connected and output current with outer lead by line connecting joint, it not only requires firmly to join between joint and the terminal, to guarantee doing unlikely getting loose of time spent in wind and snow loading or short circuit current electromagnetic force, and need keep good electric contact, promptly very little contact resistance, unlikely heating damaged when electric current was passed through.In the prior art, the current joint of cylindrical binding post adopts the hood type clamping connection more, and lock with bolt at the two ends of anchor ear.Because anchor ear promptly reduces rapidly to two ends from the middle part the distribution of forces inequality of cylindrical binding post, so insufficient clamping force, terminal easily breaks away from, and the bad contact between the anchor ear makes electric current actual in area half of area till now not, thereby resistance is big, and heating damages easily.

In view of this, the purpose of this utility model provides a kind of current joint that is used for cylindrical terminal, its with terminal between have good electric contact and evenly, firm grip power.

One end of the utility model current joint is the clamp system that connects cylindrical terminal, and the other end is to hold line mechanism with the outer lead that grafting, amplexis or alternate manner connect.Its terminal clamp system is made up of inner sleeve, outer tube and back tightening nut, and the tube wall of inner sleeve has several axial pass troughs and is many flaps, and its external diameter is cumulative towards the pipe end direction, thereby the outer wall belt tapering; Outer tube is placed in outside the inner sleeve, and its internal diameter is less than the external diameter of inner sleeve pipe end, and cumulative to the pipe end direction, thereby the inner wall belt tapering; Back tightening nut is connected with the bottom thread of inner sleeve.And axial compression outer tube and outer tube is advanced to the pipe end direction, in this process, outer tube is converted into radial load and clamps terminal securely by the flap tube wall the axial force of inner sleeve tapered wall face.The line mechanism of holding that the utility model current joint connects outer lead can be a tubulose, also can be Hough or anchor ear shape structure respectively with peg graft, the mode of amplexis is held lead with a firm grip.This current joint inner sleeve with hold line mechanism and be linked to be one, be referred to as body.Body can be that identical material is made, and also can and hold line mechanism by the inner sleeve made with unlike material and be welded mutually, selects for use according to the material of terminal and outer lead is identical or different in actual the use.If terminal and lead are with a kind of material (as copper), then body is also made by identical material (copper), if the terminal material is a copper, lead material is an aluminium, and then body should be selected the connector that copper, aluminium weld mutually for use.

The utility model current joint adopts many valvular structures of internal and external casing taper wall and inner sleeve, and the electric current of terminal conducts by whole even tube wall, and electric contact is good, and resistance is little, is difficult for heating and damages.

Below by description of drawings embodiment of the present utility model.

Fig. 1 is an example structure figure of the utility model electric connection.

Fig. 2 is the bulk junction composition of Fig. 1 embodiment.

Fig. 3 is another example structure figure of the utility model current joint.

Among Fig. 1 embodiment, lead 7 is held line mechanism 6 with tubulose and is plugged, inner sleeve and lead tubulose are held line mechanism and are fused as shown in Figure 2, among Fig. 1 and Fig. 2, inner sleeve 8 outer walls are tapered, and tube wall has the axial pass trough a of symmetrical distribution, and is many flaps, body middle part car has external screw thread b, and cylindrical terminal 1 is pegged graft with inner sleeve 8.Outer tube 10 is placed in outside the inner sleeve, and its inwall tapering is consistent with the outer wall tapering of inner sleeve, and the taper wall of internal and external casing contacts, and nut 9 screws in screw thread b and advances the also bottom of axial compression outer tube 10 to the terminal direction, and outer tube promptly advances to the pipe end direction.Its propulsive force acts on inner sleeve by the taper wall and produces radial load and makes inner sleeve be subjected to radial compression to clamp terminal.

Fig. 3 is another embodiment of the present utility model, and among this embodiment, the line mechanism of holding of lead 7 is a half slide structure, but Hough 11 connect and folding with hinge, hold behind the lead with bolt 12 lockings.Being " T " word between lead 7 and the cylindrical terminal 1 in the present embodiment is connected.

The tapering recommendation of taper wall is 1:3～1:15 in the present embodiment.

For preventing the couple corrosion of different metal, can be coated with one deck damp-proof paint at the boundary of two kinds of metal materials (as copper and aluminium), prevent that the moisture content intervention from forming primary cell.In addition, be the power of reducing friction, contact between the conical surface the reduce friction poly-tetrem alkene of coefficient of plating one deck with overcoat at body.

Claims

1, the current joint of the cylindrical binding post of electrical equipment output current, the one end is the clamp system that is connected with cylindrical terminal, the other end is that the lead that is connected with outer lead is held line mechanism, the latter can adopt grafting, amplexis or other form hold line structure, it is characterized in that the terminal clamp system is by inner sleeve 8, outer tube 10 and back tightening nut 9 are formed, the tube wall of inner sleeve 8 has several axial pass troughs a and is many flaps, external diameter of pipe is cumulative and tapered to the pipe end direction, outer tube 10 is placed in outside the inner sleeve 8, its internal diameter is less than the external diameter of inner sleeve pipe end, and back tightening nut 9 is connected axial compression and advances outer tube with the bottom thread of inner sleeve.

2, as the current joint of the described cylindrical binding post of above-mentioned claim 1, the cumulative and tapering of the interior radially pipe end direction that it is characterized in that outer tube 10, this tapering is consistent with the outer wall tapering of inner sleeve 8.

3, as the current joint of the described cylindrical binding post of above-mentioned claim 1, the outer wall tapering that it is characterized in that inner sleeve is 1:3～1:15.

4, as the current joint of the described cylindrical binding post of above-mentioned claim 2, the inwall tapering that it is characterized in that outer tube 10 is 1:3～1:15.

5,, it is characterized in that the contact-making surface of body and outer tube scribbles polytetrafluoroethylplastic plastic as the current joint of the described cylindrical binding post of above-mentioned claim 4.