Welded type ceramic wiring terminal for power capacitor
The application is that application number is 201210090575.8, and the applying date is on March 31st, 2012, and what invention and created name was the application for a patent for invention of " for the ceramic wiring terminal of power capacitor " divides an application.
Technical field
The present invention relates to ceramic-type binding post structure design field, relate in particular to a kind of ceramic wiring terminal for power capacitor.
Background technology
The ceramic insulator of high-voltage capacitor be in the market with silver installation portion together with ceramic welding, make it to be firmly fixed on pottery and go up, this product cost is higher, complex steps, long processing time.
Traditional ceramic-type insulator, metallic connector assembly and installation component need to be welded and fixed with ceramic insulator, due to ceramic particularity, need to adopt and take the extraordinary scolder that silver alloy is main component, this kind of scolder price is very expensive, simultaneously in order to guarantee the fastness of the two combination, also needs quite thick layer, materials are more, cause the cost of this kind of insulator high; In addition, for this silver alloy being mixed with to the viscous state of easily smearing, need to adopt the heavier acidic chemical medicine of pollution level, be unfavorable for protection of the environment.
Patent application 200910131660.2 discloses a kind of ceramic insulator device for high-voltage capacitor.The disclosed ceramic insulator device of this patent, by adopting new construction, replaces traditional silver alloy solder by common cheap tin alloy solder, thereby has reduced manufacturing cost.
Applicant finds in follow-up research and development trial-manufacturing process, adopt two semicircular metal baffle rings and metal installation base to be welded and fixed, thereby guarantee that metal installation base fixedly secures in ceramic outer wall, this structure is practical and can meets relevant national standard, but the operating process that its processing is installed is but comparatively loaded down with trivial details, need to adopt special special fixture to clamp metal baffle ring and metal installation base, could to it, carry out soldering smoothly.
In addition, the structure of this kind of ceramic insulator device metal installation base used is comparatively complicated, and cost is higher and manufacturing process is comparatively loaded down with trivial details.
Summary of the invention
The object of this invention is to provide the welded type ceramic wiring terminal for power capacitor that a kind of structure and assembly thereof are comparatively simplified.
The technical scheme that realizes the object of the invention is: a kind of welded type ceramic wiring terminal for power capacitor, comprises ceramic insulator and the installation component that is arranged on described ceramic insulator bottom; Described ceramic insulator is provided with through hole along self central axis, and the middle part outer wall of described insulator is provided with a plurality of full skirts, and the outer wall of described insulator bottom is provided with a radially annular locating lug boss for projection; Described installation component comprises metal rolling part, O-ring seal and base tube; ; Described O-ring seal is set on the outer wall of insulator bottom, and arranges in abutting connection with annular locating lug boss diapire; Described metal rolling part comprises for O-ring seal being pressed on to pressure contact portion on annular locating lug boss diapire, for being set in the socket part in annular locating lug boss and withholding the roll extrusion ring on annular locating lug boss roof by roll extrusion mode; Described base tube comprise for roll extrusion part welding or glued joint the weld part that is connected and with the one-body molded cannula portion of making of weld part.Described ceramic insulator external wall of upper portion is provided with annular roll extrusion snapping portion, and described ceramic insulator top is provided with groove, and the through hole of described ceramic insulator is positioned at this groove center; Described connector assembly comprises gasket seal, bolt and roll extrusion connector; Described gasket seal center is provided with open-work; Described bolt comprises the location division that is provided with the double-screw bolt in external screw thread district and is positioned at double-screw bolt one side; Location division and the gasket seal of described bolt are arranged in groove, and described gasket seal is between Bolt to position portion and groove diapire; Described roll extrusion connector comprises for being crimped on lid splenium in Bolt to position portion, for being set in socket part in ceramic insulator external wall of upper portion and for be crimped on the roll extrusion portion in annular roll extrusion snapping portion in ceramic insulator external wall of upper portion by roll extrusion mode, described lid splenium center is provided with open-work, and the double-screw bolt of described bolt is through this open-work and exceed roll extrusion connector.Described roll extrusion ring is to form along top, roll extrusion part socket part described in inward direction roll extrusion.The weld part of described base tube is welded and fixed and is connected with the pressure contact portion of metal rolling part.The roof of described base tube weld part is that the pressure contact portion of a plane and metal rolling part is equipped with welding plane.
The present invention has positive effect:
(1) in the present invention, described base tube comprise for roll extrusion part welding or glued joint the weld part that is connected and with the one-body molded cannula portion of making of weld part.This kind of structure is due to by adopting roll extrusion mode rational in infrastructure that roll extrusion part is fixed on the outer wall of ceramic insulator bottom, and by welding manner, roll extrusion part and cannula portion are welded and fixed, as whole metal installation base used traditionally, thereby effectively simplify the structure and assembly operation, and can reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 is a kind of cutaway view of the first structure of the present invention;
Fig. 2 is a kind of cutaway view of ceramic insulator in binding post shown in Fig. 1;
Fig. 3 is a kind of cutaway view of metal rolling part in binding post shown in Fig. 1;
Fig. 4 is a kind of cutaway view of base tube in binding post shown in Fig. 1.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 4 has shown the first embodiment of the present invention, and wherein Fig. 1 is a kind of cutaway view of the first structure of the present invention; Fig. 2 is a kind of cutaway view of ceramic insulator in binding post shown in Fig. 1; Fig. 3 is a kind of cutaway view of metal rolling part in binding post shown in Fig. 1; Fig. 4 is a kind of cutaway view of base tube in binding post shown in Fig. 1.
The present embodiment is a kind of ceramic wiring terminal for power capacitor, sees shown in Fig. 1 to Fig. 4, comprises ceramic insulator 1, is arranged on the connector assembly 4 on described ceramic insulator 1 top and is arranged on the installation component 2 of described ceramic insulator 1 bottom; Described ceramic insulator 1 is provided with through hole 11 along self central axis, and the middle part outer wall of described insulator 1 is provided with a plurality of full skirts 12, and described insulator 1 bottom outer wall is provided with a radially annular locating lug boss 13 for projection.
Described installation component 2 comprises metal rolling part 21, O-ring seal 22 and base tube 3; Described O-ring seal 22 is set on insulator 1 bottom outer wall, and arranges in abutting connection with annular locating lug boss diapire 131; Described metal rolling part 21 comprises for O-ring seal 22 being pressed on to pressure contact portion 211 on annular locating lug boss diapire 131, for being set in the socket part 212 in annular locating lug boss 13 and withholding the roll extrusion ring 213 on annular locating lug boss roof 132 by roll extrusion mode; Described base tube 3 comprise for roll extrusion part 21 welding or glued joint the weld part 31 that is connected and with the one-body molded cannula portion of making 32 of weld part 31.
The roof of described base tube 3 weld parts 31 is that the pressure contact portion 211 of a plane and metal rolling part 21 is equipped with welding plane 100, and the weld part 31 of described base tube 3 is welded and fixed and is connected with the pressure contact portion 211 of metal rolling part 21.
Described roll extrusion ring 213 is to form along 212 tops, 21 socket part of roll extrusion part described in inward direction roll extrusion.
Described ceramic insulator 1 external wall of upper portion is provided with annular roll extrusion snapping portion 15, and described ceramic insulator 1 top is provided with groove 16, and the through hole 11 of described ceramic insulator 1 is positioned at this groove 16 centers; Described connector assembly 4 comprises gasket seal 41, bolt 42 and roll extrusion connector 43; Described gasket seal 41 centers are provided with open-work 411; Described bolt 42 comprises the location division 422 that is provided with the double-screw bolt 421 in external screw thread district and is positioned at double-screw bolt 421 1 sides; Location division 422 and the gasket seal 41 of described bolt 42 are arranged in groove 16, and described gasket seal 41 is between bolt 42 location divisions 422 and groove 16 diapires; Described roll extrusion connector 43 comprises for being crimped on lid splenium 431 on bolt 42 location divisions 422, for being set in socket part 432 in ceramic insulator 1 external wall of upper portion and for be crimped on the roll extrusion portion 433 in annular roll extrusion snapping portion 15 in ceramic insulator 1 external wall of upper portion by roll extrusion mode, described lid splenium 431 centers are provided with open-work 434, and the double-screw bolt 421 of described bolt 42 is through this open-work 434 and exceed roll extrusion connector 43.
Described bolt 42 is also provided with the wiring hole 423 that runs through double-screw bolt 421 and location division 422 along central axial direction; The open-work 411 of described wiring hole 423, gasket seal 41, the roll extrusion connector 43 lid open-works 434 of splenium 431, the through hole 11 of ceramic insulator 1 arrange with one heart.
The shape of described groove 16 and bolt 42 location divisions 422 is the regular polygons that match, and the present embodiment is selected regular hexagon.
The rolled distortion in bottom of the roll extrusion portion 433 of described roll extrusion connector 43 is to roll extrusion snapping ring 435 of projecting inward formation.
The present embodiment is due to by adopting roll extrusion mode rational in infrastructure that metal installation base is fixed on the outer wall of ceramic insulator bottom, thereby effectively enhances productivity and the reliability of product quality.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.