There is the closed type ceramic wiring terminal of metal installation base
The application is that application number is 201210095872.1, and the applying date is on March 31st, 2012, and invention and created name is the divisional application of the application for a patent for invention of " ceramic wiring terminal ".
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 High-Voltage Electrical Appliances.
Background technology
The ceramic insulator of high-voltage capacitor is in the market with silver, installation portion and ceramic body to be welded together, and makes it to be firmly fixed on ceramic body, and 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 body, due to ceramic particularity, need to adopt the extraordinary scolder taking silver alloy as main component, this kind of scolder price is very expensive, simultaneously in order to ensure 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 ensure 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 carry out soldering to it smoothly.
Summary of the invention
The object of this invention is to provide the closed type ceramic wiring terminal with metal installation base 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 ceramic wiring terminal, comprises ceramic insulator body and the installation component that is arranged on described ceramic insulator body bottom; Described ceramic insulator body is provided with through hole along self central axis, and the middle part outer wall of described insulator body is provided with multiple full skirts, and the outer wall of described insulator body bottom is provided with an annular locating lug boss; Its design feature is: also comprise connector assembly; Described installation component comprises metal installation base and annular seal ring; The basic configuration of described metal installation base is tubulose, and its upper end is provided with roll extrusion connecting portion, and its middle part is provided with to outstanding limiting section in pipe; Described annular seal ring is set on the outer wall of insulator body bottom, and between the limiting section and annular locating lug boss of metal installation base, this limiting section is pressed on annular seal ring on annular locating lug boss bottom; The top of described roll extrusion connecting portion is crimped on annular locating lug boss top by roll extrusion mode.The outer wall on described ceramic insulator body top is provided with annular roll extrusion snapping portion, and described ceramic insulator body top is provided with groove, and the through hole of described ceramic insulator body is positioned at this groove center; 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 body external wall of upper portion and for be crimped on the roll extrusion portion in annular roll extrusion snapping portion in ceramic insulator body 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 bolt is also provided with the wiring hole that runs through double-screw bolt and location division along central axial direction; The open-work of described wiring hole, gasket seal, the open-work of roll extrusion connector lid splenium, the through hole of ceramic insulator body arrange with one heart.The limiting section of described metal installation base is to form by the tube wall of direction roll extrusion metal installation base in pipe.The rolled distortion in top of described roll extrusion connecting portion is a roll extrusion connecting ring of outstanding formation inwardly.Between described roll extrusion connecting ring and annular locating lug boss, be also provided with the elastic sealing gasket of an annular.
The present invention has positive effect:
(1), in the present invention, described installation component comprises metal installation base and annular seal ring; The basic configuration of described metal installation base is tubulose, and its upper end is provided with roll extrusion connecting portion, and its middle part is provided with to outstanding limiting section in pipe; Described annular seal ring is set on the outer wall of insulator body bottom, and between the limiting section and annular locating lug boss of metal installation base, this limiting section is pressed on annular seal ring on annular locating lug boss bottom; The top of described roll extrusion connecting portion is crimped on annular locating lug boss top by roll extrusion mode.This kind of structure be due to by adopting roll extrusion mode rational in infrastructure that metal installation base is fixed on the outer wall of ceramic insulator body bottom, thereby effectively enhance productivity and the reliability of product quality.
Brief description of the drawings
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 the second structure of the present invention.
Embodiment
(embodiment 1)
Fig. 1 is a kind of cutaway view of the first structure of the present invention, has shown the first embodiment of the present invention.
The present embodiment is a kind of ceramic wiring terminal, as shown in Figure 1, comprises ceramic insulator body 1, is arranged on the connector assembly 4 on described ceramic insulator body 1 top and is arranged on the installation component 2 of described ceramic insulator body 1 bottom.
Described ceramic insulator body 1 is provided with through hole 11 along self central axis, and the middle part outer wall of described insulator body is provided with multiple full skirts 12, and the outer wall of described insulator body bottom is provided with an annular locating lug boss 13.
Described installation component 2 comprises metal installation base 21 and annular seal ring 22; The basic configuration of described metal installation base 21 is tubulose, and its upper end is provided with roll extrusion connecting portion 211, and its middle part is provided with to outstanding limiting section 212 in pipe, and its underpart is provided with the cannula portion 213 of cup-shaped; The limiting section 212 of described metal installation base 21 is to form by the tube wall of direction roll extrusion metal installation base 21 in pipe.Described annular seal ring 22 is set on the outer wall of insulator body bottom, and between the limiting section 212 and annular locating lug boss 13 of metal installation base 21, this limiting section 212 is pressed on annular seal ring 22 on annular locating lug boss 13 bottoms; The top of described roll extrusion connecting portion 211 is crimped on annular locating lug boss 13 tops by roll extrusion mode, and the rolled distortion in top of described roll extrusion connecting portion 211 is a roll extrusion connecting ring 214 of outstanding formation inwardly.
The outer wall on described ceramic insulator body 1 top is provided with annular roll extrusion snapping portion 15, and described ceramic insulator body 1 top is provided with groove 16, and the through hole 11 of described ceramic insulator body 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 body 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 body 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 through hole 11 of the open-work 411 of described wiring hole 423, gasket seal 41, the open-work 434 that roll extrusion connector 43 covers splenium 431, ceramic insulator body 1 arranges 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 body bottom, thereby effectively enhances productivity and the reliability of product quality.
(embodiment 2)
Fig. 2 is a kind of cutaway view of the second structure of the present invention, has shown the second embodiment of the present invention.
The present embodiment is substantially the same manner as Example 1, and difference is: as shown in Figure 1, be also provided with the elastic sealing gasket 3 of an annular between described roll extrusion connecting ring 214 and annular locating lug boss 13.In addition, between the annular roll extrusion snapping portion 15 in described roll extrusion snapping ring 435 and ceramic insulator body 1 external wall of upper portion, be also provided with a Gask-O-Seal 5.The effect of described elastic sealing gasket 3 and Gask-O-Seal is further to strengthen sealing effectiveness, also effectively prevents that in addition ceramic insulator body is because roll extrusion power is compared with large and cracked.
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 without also giving exhaustive to all execution modes.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.