CN203260467U

CN203260467U - Novel capacitor structure with positioning sleeve

Info

Publication number: CN203260467U
Application number: CN 201320117371
Authority: CN
Inventors: 俞广铨; 陈栋; 郑云
Original assignee: WUXI CHENRUI NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: WUXI CHENRUI NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2013-10-30
Anticipated expiration: 2023-03-15

Abstract

The utility model discloses a novel capacitor structure with a positioning sleeve, which comprises a housing, a capacitor core, the plastic positioning sleeve and metal leading-out terminals. The capacitor core is connected with the leading-out terminals through copper belts or copper wires. The metal housing and the leading-out terminals are fixed and insulated through a plastic positioning upper cover. Meanwhile, the capacitor core and the whole metal housing are positioned in an insulating way through a positioning sleeve lower cover. Heat conduction epoxy resin is finally filled for integral packaging. The novel capacitor structure effectively solves the leading-out terminal center positioning and exposed dimension guaranteeing problems in a manufacture technology. Meanwhile, the plastic positioning cover makes the leading-out terminals and the metal housing completely insulated. The creepage distance between the two leading-out terminals is effectively increased. Great convenience is thus brought for capacitor installation.

Description

A kind of novel capacitor structure with positioning sleeve

Technical field

The utility model relates to a kind of novel capacitor structure with positioning sleeve, the capacitor of especially drawing about a kind of circular metal shell copper nut or brass bolt.

Background technology

The encapsulation of capacitor and lead-out mode have a variety of, in the application of power electronic capacitor, generally can relate to a kind of circular metal shell encapsulation, the film capacitor that brass bolt or copper nut are drawn. the capacitor of this construction packages can very large efficient utilization be used the space, easy for installation, making easily standardized component makes up for customer selecting. but this capacitor make and the time have two deficiencies: the one, a plurality of serial or parallel connections uses when this capacitor is general when installing and using, it is particularly important that Insulation Problems between its metal shell and exit just becomes, in case both contact because of carelessness, gently then damage capacitor, heavy then damage equipment; The 2nd, because installation requirement, how exit guarantees placed in the middle and exposes size also to become very difficult manufacturing such electric capacity, if control is bad when producing, difficulty is installed not only, loose contact is installed sometimes reluctantly, brings potential safety hazard also for the long-term operation of circuitry.

For realizing this circular metal shell encapsulation of normal safe handling, the capacitor that bronze gong mother or bronze gong bolt are drawn, existing generally have a following solution: the one, and be the insulation that realizes between exit and metal shell, overlap heat-shrinkable T bush at shell, there is cover electric capacity upper part to insulate, also there is whole electric capacity to put heat-shrinkable T bush and only exposes exit. this scheme has following deficiency, 1) dielectric strength of heat-shrinkable T bush may not be enough, and heat-shrinkable T bush pierces through easily to damage and causes electric leakage hidden danger; 2) this type of electric capacity generally is used for the many occasions of the large heating of electric current, use metal shell itself for ease of heat radiation, in case put heat-shrink tube, equal to put " wadded jacket " to electric capacity, be unfavorable for the product heat radiation, the temperature rise meeting reduces the life-span of capacitor greatly, and the probability that lost efficacy in large electric current application scenario increases greatly.

In order when manufacturing, to guarantee the placed in the middle of exit and to expose size, existing general solution is to guarantee size with special-purpose anchor clamps before infusion epoxy resin, behind epoxy resin cure, take off again anchor clamps. this kind method has caused great inconvenience to production process, each upper anchor clamps dismounting fixture is wasted many man-hours, the keeping of anchor clamps and replacing are also pretty troublesome, often there are reworks and defective products to occur, are not suitable for modern production in enormous quantities fully.

Summary of the invention

The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, and provides a kind of simple and reasonable for structure, and technique is simple and easy, cost is low, and can effectively stablize the organization plan that solution metal shell capacitor envelope is drawn assurance and Insulation Problems.

The purpose of this utility model is achieved in that

A kind of novel capacitor structure with positioning sleeve, comprise metal shell (1), capacitor body (2), leading-out terminal (3), plastics location loam cake (4) and positioning sleeve lower cover (5), metal shell (1) and leading-out terminal (3) be fixing and insulation by plastics location loam cakes (4), capacitor body (2) and metal shell (1) are by positioning sleeve lower cover (5) insulation location simultaneously, and described plastics are located loam cake (4), metal shell (1), pour into heat-conduction epoxy resin (6) overall package between the positioning sleeve lower cover (5).Leading-out terminal (3) is circular copper nut or brass bolt, at leading-out terminal (3) groove is arranged one, covered tongue in the plastics location simultaneously, by the clamping matching of described groove, tongue, made leading-out terminal (3) and plastics location loam cakes (4) form one.

Capacitor body connects leading-out terminal by copper strips or copper cash, and metal shell and leading-out terminal are fixed by plastics plastics location loam cake and are insulated, simultaneously capacitor core with the insulation location of whole metal shell also by the positioning sleeve lower cover, pour at last the heat-conduction epoxy resin overall package.Exit and vinyl cover form one like this, and the size of plastics locating cover just cooperates with metal shell, effectively solve in the manufacture craft exit center and locate and expose the Assurance of Size problem; The plastics locating cover insulate exit and metal shell fully in the downward part of housing exterior simultaneously, has effectively increased the creepage distance of two exits, and installing for capacitor provides very big convenience.

The purpose of this utility model also adopts following technical measures to solve:

Above-mentioned leading-out terminal is generally circular copper nut or brass bolt, at exit groove is arranged one, and at plastics plastics location loam cake fairlead one tongue is arranged simultaneously, clamping matching by tongue and groove, exit and vinyl cover form one, before infusion epoxy resin, can not become flexible yet, bring very big facility to production.

As the locating cover capacitance structure of another kind of form, exit also can be three or more.

The beneficial effects of the utility model are:

1) form one by exit and vinyl cover, the size of plastics location loam cake just cooperates with metal shell, effectively solves in the manufacture craft exit center and locates and expose the Assurance of Size problem, is convenient to the production in enormous quantities of this type of electric capacity;

2), above-mentioned exit and the cooperation of locating cover, by the clamping matching of tongue and groove, exit and vinyl cover form one, also can not become flexible before infusion epoxy resin, and a kind of creationary locate mode is provided, and bring very big facility to production;

3) the plastics locating cover insulate exit and metal shell fully in the downward part of housing exterior, has effectively increased the creepage distance of two exits, and installing for capacitor provides very big convenience.

4) size dimension of the locating cover of above-mentioned capacitor only need be considered to cooperate with the cylinder metal housing diameter, need not consider height, and general shell external diameter and installation foot are several apart from only having, so only need minority several specifications locating cover just, solve the not strong problem of anchor clamps versatility, cost also reduces.

Description of drawings

Fig. 1 is a kind of overall construction drawing of the novel capacitor structure with positioning sleeve.

Fig. 2 is that a kind of locating cover of the novel capacitor structure with positioning sleeve cooperates schematic diagram with bolt.

Fig. 3 is that a kind of locating cover of the novel capacitor structure with positioning sleeve cooperates schematic diagram with nut;

Fig. 4 is that three ends of another kind of form are drawn the capacitance structure schematic diagram.

Embodiment

As shown in Figure 1: a kind of novel capacitor structure with positioning sleeve, it comprises metal shell 1 and capacitor body 2, leading-out terminal 3, plastics location loam cake 4, positioning sleeve lower cover 5; And metal shell 1 and leading-out terminal 3 are fixed and insulation by plastics location loam cake 4, and heat-conduction epoxy resin 6 overall package are poured at last also by positioning sleeve lower cover 5 in the insulation of capacitor body 2 and whole metal shell 1 location simultaneously.Form one by exit and vinyl cover, the size of plastics location loam cake just cooperates with metal shell, effectively solves in the manufacture craft exit center and locates and expose the Assurance of Size problem.

Such as Fig. 2 or shown in Figure 3: 3 is leading-out terminal, be generally circular copper nut or brass bolt, at leading-out terminal 3 groove 31 arranged one, and at plastics location loam cake 4 tongue 41 is arranged simultaneously, by the clamping matching of tongue and groove, exit 3 and plastics location loam cake 4 form one.Before infusion epoxy resin, carry out other process operations and also can not become flexible, bring very big facility to production.

Three ends of the another kind of form of Fig. 4 are drawn electric capacity.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection range of the present utility model.

Claims

1. novel capacitor structure with positioning sleeve, comprise metal shell (1), capacitor body (2), leading-out terminal (3), plastics location loam cake (4) and positioning sleeve lower cover (5), it is characterized in that, metal shell (1) and leading-out terminal (3) be fixing and insulation by plastics location loam cakes (4), capacitor body (2) and metal shell (1) are by positioning sleeve lower cover (5) insulation location simultaneously, and described plastics are located loam cake (4), metal shell (1), pour into heat-conduction epoxy resin (6) overall package between the positioning sleeve lower cover (5).

2. a kind of novel capacitor structure with positioning sleeve according to claim 1, it is characterized in that, above-mentioned leading-out terminal (3) is circular copper nut or brass bolt, at leading-out terminal (3) groove is arranged one, covered tongue in the plastics location simultaneously, by the clamping matching of described groove, tongue, make leading-out terminal (3) and plastics location loam cakes (4) form one.