The binding post of high voltage isolator
Technical field
The utility model relates to the structure technology of high voltage isolator technical field, particularly its binding post.
Background technology
Binding post is a pith in the high voltage isolator, for the outer end high-tension electricity is sent to subordinate by switch, existing binding post is made up of the terminals and the main body of periphery, main body is provided with mesopore, terminal block is arranged in the upper end of binding post, between terminal block and the binding post copper is set and is flexible coupling.The terminal block anglec of rotation that is provided with owing to be flexible coupling is limited, can produce bigger torsion to porcelain vase, lead, and terminal block twists, repeatedly after, the junction that copper is flexible coupling is easy to fracture, causes the accident.
The utility model content
The utility model purpose is to design the binding post of a kind of safety, high voltage isolator that connective stability is good.
The utility model comprises binding post and the terminal block of being made by electric conducting material; Binding post is made up of a tubular body and the conductive arm that is connected the main body periphery; The elastic conducting strip of a plurality of electroplates is set at the inner chamber of tubular body, the vertical annular array of each conducting strip is in tubular body, the lower end of described conducting strip is supported on the insulation bottom end cover, the insulation bottom end cover is fixed on the lower end of tubular body, the upper end of described conducting strip is provided with terminal cap, and terminal cap is connected on the tubular body; Center at conducting strip is provided with conductive shaft, and the upper end of described conductive shaft is connected with terminal block, and the insulation sliding sleeve is set between conductive shaft and terminal cap, and the lower end of conductive shaft is supported in the mesopore of bottom end cover by circlip for hole; The medial and lateral of each conducting strip touch with conductive shaft outer surface and tubular body inwall respectively.
The utility model adopts conductive shaft to be fixed on the terminal block, and conductive shaft is guided to electric current on the conductive arm of binding post by conducting strip, forms safe and reliable galvanic circle, perfect heat-dissipating; Sliding sleeve by the upper end and bottom end cover be as sliding bearing, make conductive shaft can be in binding post 360 ° freely rotate, thereby can not produce any torsion to the lead that connects, need not lubricate rotor, safe and reliable, can reach non-maintaining, practical.
Produce for convenience, install, the lower end of bottom end cover described in the utility model is supported on the tubular body inner chamber by another circlip for hole.
For guaranteeing each conducting strip conducting and conductive shaft and tubular body, conducting strip makes conducting strip self produce elastic force by making of copper sheet bending fixed angle, has guaranteed to contact reliably between each conducting strip and conductive shaft and the tubular body.Even, stable for guaranteeing the interval between each conducting strip simultaneously, each conducting strip of conducting strip the utility model is by three bracing ring relative fixed.
Produce, install for convenient, the upper end of conductive shaft is crimped in the mesopore of terminal block by interference fit.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 be among Fig. 1 A-A to profile.
Fig. 3 be among Fig. 1 B-B to profile.
Embodiment
As shown in Figure 1, 2, 3, binding post of the present utility model is made up of a tubular body 1 and the conductive arm 11 that is connected tubular body 1 periphery, and tubular body 1 and conductive arm 11 are made by electric conducting material.
Inner chamber in tubular body 1 is provided with 39 silver-plated elastic conducting strips 7, each conducting strip 7 vertical annular array is in tubular body 1, evenly distributed between each conducting strip 7 by three bracing rings 6, the lower end of each conducting strip 7 is supported on the annular insulation bottom end cover of being made by nylon 8, and insulation bottom end cover 8 is fixed on tubular body 1 lower end by circlip for hole 9.The upper end of conducting strip 7 is provided with terminal cap 2, and terminal cap 2 is crimped on the upper end of tubular body 1 by interference fit.
At the conductive shaft 5 that the annular center setting of each conducting strip 7 formation is made by electric conducting material, the upper end of conductive shaft 5 is crimped on by interference fit in the mesopore of terminal block 4, and nylon insulation sliding sleeve 3 also is set between conductive shaft 5 and terminal cap 2.The lower end of conductive shaft 5 is supported in the mesopore of insulation bottom end cover 8 by circlip for hole 10.And the medial and lateral of each conducting strip 7 are touched with conductive shaft 5 outer surfaces and tubular body 1 inwall respectively, form the galvanic circle.
Above-mentioned tubular body 1, conductive arm 11, terminal cap 2, terminal block 4 adopt the electric conducting material aluminium alloy to make; Conducting strip 7, conductive shaft 5, bracing ring 6 adopts copper to do.