Ceramic binding post for power capacitor

Abstract

The invention discloses a ceramic binding post for a power capacitor, which comprises a ceramic insulator and a mounting component. The ceramic insulator is provided with a through hole along the central axis thereof, a plurality of skirts are arranged on the outer wall of the middle of the insulator, and an annular positioning boss projected radially is arranged on the outer wall of the lower portion of the insulator. The mounting component comprises a metal base and an annular sealing ring, the annular sealing ring is sleeved on the outer wall of the lower portion of the insulator and arranged adjacently to the bottom wall of the annular positioning boss, the metal base comprises a pressing portion used for pressing the annular sealing ring on the bottom wall of the annular positioning boss, a plurality of positioning slots extending along the axis are arranged on the outer wall of the lower portion of the insulator, and each positioning slot is located below the annular positioning boss. The pressing portion of the metal base is provided with a plurality of positioning projections matched with the positioning slots, and each positioning projection is arranged in the corresponding positioning slot. The ceramic binding post is reasonable and compact in structure, and capable of preventing the metal base from sliding along the insulator circumferentially so as to guarantee sealing performance of the metal base.

Description

Technical field [0001] The invention relates to the technical field of ceramic terminal structure design, in particular to a ceramic terminal for power capacitors. Background technique [0002] The ceramic insulators of high-voltage capacitors currently on the market use silver to weld the mounting part and the ceramic together to make it firmly fixed on the ceramic. This product has a high cost, cumbersome steps and long processing time. [0003] Traditional ceramic insulators need to weld and fix metal wiring components and mounting components with ceramic insulators. Due to the particularity of ceramics, special solders with silver alloy as the main component are needed. This kind of solder is very expensive and is also in order to ensure The firmness of the combination of the two also requires a relatively thick solder layer, and the use of more materials results in the high cost of this type of insulator; in addition, in order to prepare this silver alloy into a viscous fluid ...

AI Technical Summary

Problems solved by technology

[0005] During the follow-up R&D and trial production process, the applicant found that two semi-circular metal retaining rings are welded and fixed to the metal mounting seat, so as to ensure that the metal mounting seat is firmly fixed on the ceramic outer wall. This structure is feasible and can meet the requirements of the national Relevant standards, but the operation process of its processing and installation is relatively cumbersome, and it is necessary to use a special special fixture to clamp the metal retaining ring and the metal mounting seat, so that it can be welded smoothly

[0006] In addition, when the metal mounting seat used in this kind of ceramic insulator device is subjected to a large force, it is easy to slip along the circumferential direction of the insulator, which affects the sealing performance

Images