CN2687810Y

CN2687810Y - High-voltage penetration ceramic capacitor

Info

Publication number: CN2687810Y
Application number: CN 200420025880
Authority: CN
Inventors: 俞斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-28
Filing date: 2004-03-28
Publication date: 2005-03-23
Anticipated expiration: 2014-03-28

Abstract

The utility model relates to a high-voltage penetration ceramic capacitor and belongs to the electronic component, comprising an insulating body with through holes, a separate electric pole, a common electric pole, a grounding component, a direct connection conductor, a fastening joint, an insulating tube, an insulation box, an insulation cylinder, an electric pole socket and resin materials poured in the insulation box and the insulation cylinder. Through holes communicated with the through hole edge of the ceramic insulating body are arranged on the upper periphery of the pair of electric pole sockets. A close board is arranged in the upper part of the cylinder cavity of the insulation cylinder. The close board has a pair of through holes through which the direct connection conductor can pass. A pair of sealed bladders is formed at the bottom of the close board. Sealing rings are respectively arranged in the cavity of each sealed bladder. The resin material can be poured in the insulation box and the insulation cylinder in one time. The equipment used for pouring the resin material can be saved. The processing cost of the capacitor can be reduced through shortening the working process.

Description

High-voltage through-type ceramic capacitor

Technical field

The utility model relates to a kind of high-voltage through-type ceramic capacitor, particularly a kind ofly be used for microwave oven or claim microwave oven or similar devices resembles the high-voltage through-type ceramic capacitor of the magnetron that industrial drying machine and similar device adopt, the microwave clutter that is used for magnetron is produced masks, and belongs to electronic devices and components.

Background technology

Chinese patent publication number CN1041060A and CN1133549A disclose the clutter shielding device of high-voltage through-type ceramic capacitor and microwave oven magnetic respectively, the former has done conversion to the insulating case of the high-voltage through-type ceramic capacitor in the prior art, insulating cover material, promptly insulating case and insulating cover at least one be that a kind of material of selecting from the component that comprises polyethylene terephthalate and nylon 66 is made; The latter has done simplification to the high-voltage through-type ceramic capacitor structure in the prior art, has saved the ground plate that is referred to as grounded parts, in order to avoid the microwave clutter is revealed away from perforate and installing hole on the ground plate.

Above-mentioned binomial technical scheme has been put to the proof the high-voltage through-type ceramic capacitor in the identical a kind of prior art of structure jointly, and the structure of this capacitor is seen Fig. 1 and Fig. 2, and wherein, Fig. 1 is its exploded perspective illustration, and Fig. 2 is the cutaway view of Fig. 1.Shown in this two width of cloth accompanying drawing, capacitor comprises an oval-shaped ceramics insulator 50, and a pair of vertical through hole 51 is arranged on this ceramics insulator 50, and these two vertical through holes 51 are parallel to each other.Upper surface at ceramics insulator 50 is installed with a pair of absolute electrode that is separated from each other 52, and a public electrode 53 is installed on the lower surface of ceramics insulator 52, and absolute electrode 52 and public electrode 53 have through hole at through hole 51 places corresponding to ceramics insulator 50.

Capacitor also comprises a grounded parts 60 of being made by metal material (being ground plate), an oval-shaped opening 61 is arranged at the middle part of this grounded parts 60, periphery along opening 61 has a suitably projection 63 of height,, ceramics insulator 50 is fixed on the projection 63 of grounded parts 60 as welding or similar method by a suitable mode by means of public electrode 53.

Capacitor also comprises pair of straight admittance body 30 (claiming central conductor again), and each straight-through conductor 30 usefulness insulated tube 80 is coating, and this insulated tube 80 is to make as silicon rubber with suitable material.Insulated tube 80 inserts in through hole 51 and the opening 61, each straight-through conductor 30 is fixed in the electrode socket 40, by suitable manner for example weld or similarly method each electrode socket 40 is fixed on the absolute electrode 52, can by welding or similarly method will lead directly to conductor 30 and be fixed on the electrode socket 40.

Grounded parts 60 is produced by punching press one metallic plate, so that form the projection 63 of a raised profile around opening 61, and form a dimple chamber 64 (see figure 2)s at the opposite side of grounded parts 60, to form the inner surface of projection 63, there are four to be used for grounded parts 60 being installed to shielded box or being called four through holes 62 that the filtering case gets in four bights of grounded parts 60.

Capacitor also comprises an insulation booth 10 and the insulating cylinder 70 around straight-through conductor 30 around ceramics insulator 50.The bottom of insulation booth 10 is fixed on the projection 63 of grounded parts 60, and the top of insulating cylinder 70 is fixed by the dimple chamber 64 of grounded parts 60.Gram has been expired dielectric resin material 11 and 71 (see figure 2)s in insulation booth 10 and the insulating cylinder 70, as epoxy resin or materials similar, so that cover the outside and the inboard of ceramics insulator 50 with resin coating, perhaps it is embedded in the resin, so that ensure the humidity resistance and the insulation property of ceramics insulator 50, insulation booth 10 and insulating cylinder 70 all with thermoplastic resin for example polybutyleneterephthalate (PBT) make.

Each straight-through conductor 30 is provided with a permanent joint 20 at the one end with being integral with it, this permanent joint 20 is placed in the insulation booth 10, so that apply a high voltage, an end of permanent joint 20 stretches out from an end of insulation booth 10, so that this joint is convenient to link with external lug.

Though these two patent applications all to its proof and done improvement by existing some problem of the high-voltage through-type ceramic capacitor of the prior art structure shown in Fig. 1,2, CN1041060A has made choose reasonable to the material of its insulation booth 10, insulating cylinder 70 as described above; CN1133549A has omitted grounded parts 60, but, the loaded down with trivial details problem of number of assembling steps that mainly shows as that this capacitor also exists is come and can be paid close attention to by aforementioned binomial patent application, and the loaded down with trivial details problem of number of assembling steps mainly be owe rationally by the structure of its electrode socket 40 and insulating cylinder 70 due to.After electrode socket 40 is fixed on the absolute electrode 52 by welding or similar method, to lead directly to conductor 30 again is fixed on the electrode socket 40, thereby making insulation booth 10 is that both passages of boundary and insulating cylinder 70 are isolated fully with ceramics insulator 50, because ceramics insulator 50 is on grounded parts 60.Like this, when will be to insulation booth 10, insulating cylinder 70 sealing resin materials 11,71, can't carry out disposable embedding, must be divided into two steps and carry out, promptly at first to insulation booth 10 sealing resin materials 11, treat to enter again insulating cylinder 70 sealing resin materials 71 behind the resin solidification of embedding.The problem that this substep embedding is brought is: one, as the equipment with a cover perfusion resin, need to increase life cycle of the product, if with two covers, then both increased perfusion equipment, increase life cycle of the product again; Two, because of increasing, procedure of processing influences production efficiency; Three, increase the product cost of capacitor.

Summary of the invention

Task of the present utility model is will provide a kind of can implement high-voltage through-type ceramic capacitor disposable filling resin material, that reduce perfusion equipment, save procedure of processing, reduce production costs to insulation booth, insulating cylinder.

Task of the present utility model is finished like this, a kind of high-voltage through-type ceramic capacitor, and it comprises: one has a pair of being and is symmetrically distributed and the ceramics insulator 50 of parallel through hole 51; The a pair of absolute electrode 52 that is formed at the not conducting each other of ceramics insulator 50 upper surfaces respectively; One piece be formed on ceramics insulator 50 lower surfaces and with described absolute electrode 52 corresponding public electroplaxs 53; A grounded parts 60, there is an oval-shaped opening 61 at its middle part, along opening 61 peripheries the projection 63 of a tool certain altitude that fixedly gets on by means of public electrode 53 for ceramics insulator 50 is arranged, and the inner surface corresponding to protruding 63 is formed with a dimple chamber 64; The a pair of straight-through conductor 30 that passes described through hole 51; A pair of fastening 20 of being fixed in straight-through conductor 30 tops; The a pair of insulated tube 80 that is sheathed on the straight-through conductor 30; An insulation booth 10 and a insulating cylinder 70 around straight-through conductor 30 around ceramics insulator 50, insulation booth 10 bottoms are fixed on the projection 63 of grounded parts 60, and the top of insulating cylinder 70 is fixed on the dimple chamber 64; A pair of respectively in order to plug pair of straight admittance body 30 and be individually fixed in electrode socket 40 on a pair of absolute electrode 52, be poured in the resin material 11,71 in insulation booth 10, the insulating cylinder 70, characteristics are: described pair of electrodes socket was furnished with through hole 41 40 last weeks, and through hole 41 communicates with the peritreme of described through hole 51; The tube chamber of described insulating cylinder 70 portion on the upper side has additional a shrouding 72, shrouding 72 has a pair of being and is symmetrically distributed and through hole 75 that the parallel straight-through conductor 30 of confession passed through, the bottom of shrouding 72 also is formed with a pair of sealed bladder 73 corresponding to a pair of through hole 75, accommodates sealing ring 74 in the blister cavities of each sealed bladder 73 respectively.

The utility model is evenly equipped with through hole 631 on the described wall body that is formed at the projection 63 on the grounded parts 60, through hole 631 communicates with the tube chamber of insulating cylinder 70.

Insulated tube 80 described in the utility model, sealing ring 74 are wrapped in respectively on the pair of straight admittance body 30.

Said structure disclosed in the utility model, when to insulation booth 10 filling resin materials, resin again with through hole 41 be passage along the peritreme of through hole 51 and through hole 631 auxiliary smooth and easy down enter into insulating cylinder 70 be provided with shrouding 72 above the tube chamber, so can disposablely finish, save the equipment that is used for filling resin material, shorten manufacturing procedure and help reducing the processing cost of capacitor filling resin material 11,71 in insulation booth 10, the insulating cylinder 70.

Accompanying drawing and drawing explanation

Fig. 1 is the part decomposition diagram of the high-voltage through-type ceramic capacitor in the prior art that the utility model exemplified.

Fig. 2 is that Fig. 1 is after the assembling and to the cutaway view behind insulation booth 10, insulating cylinder 70 filling resin materials 11,71.

Fig. 3 improves the three-dimensional structure diagram of the higfh-tension ceramics core-through capacitor of structure for the utility model.

Fig. 4 is Fig. 3 after the assembling and the cutaway view behind insulation booth 10, insulating cylinder 70 filling resin materials 11,71.

Figure 5 shows that the utility model pottery core-theaded type capacitor is installed in an application implementation illustration on the filter hut 90.

Embodiment

Ask for an interview Fig. 3, Fig. 4, higfh-tension ceramics core-through capacitor of the present utility model comprises an oval-shaped ceramics insulator 50, and this ceramics insulator 50 is provided with a pair of vertical through hole 51, and these two through holes 51 roughly are parallel to each other.Upper surface at ceramics insulator 50 also is that the top is provided with a pair of absolute electrode separated from one another 52, and promptly set firmly a public electrode 53 with described absolute electrode 52 corresponding faces in the bottom at the lower surface of ceramics insulator 50, all offer through hole on absolute electrode 52 and the public electrode 53 corresponding to the through hole 51 of ceramics insulator 50.

The grounded parts 60 metallic plate punch forming of capacitor, be formed with an oval-shaped opening 61 in the middle, being formed with one on every side along this oval-shaped opening 61 uses for what ceramics insulator 50 fixedly got under the situation by public electrode 53 and has a certain altitude projection 63, integrally be intervally distributed with some through holes 631 on the wall body of this projection 63, and be formed with one corresponding to projection 63 inner surface and be used for for the upper support of the insulating cylinder 70 dimple chamber 64 on it.Offer the through hole 62 that is used for grounded parts 60 is fixed on filter hut 90 (see figure 5)s in four bights of grounded parts 60.Along with adopt suitable means for example weld or similarly method public electrode 53 is fixed on the projection 63, just can realize making whole ceramics insulator 50 together to be fixed on the projection 63.

The pair of straight admittance body 30 of capacitor adopts suitable material for example aluminium or copper or aluminium alloy, copper alloy or albronze or the like, and their major part is being coated by the insulated tube made from suitable material such as silicon rubber 80, sealing ring 74.Under user mode, straight-through conductor 30 is positioned at the centre of shielded box, and promptly by the center of filter hut shown in Figure 5 90, and the choking-winding 91 that is connected with the tungsten filament of a magnetron is connected, and this connected mode can adopt welding or similar approach to carry out.The top of straight-through conductor 30 is formed with permanent joint 20 with it, high-tension electricity is applied on this permanent joint 20, and permanent joint 20 is positioned at insulation booth 10, so that insulation booth 10 can be stretched out in its end, is able to thus itself and external lug are pegged graft.

The insulation booth 10 of capacitor and insulating cylinder 70 adopts thermoplastic resins such as PBT mold formed, be fixed on projection 63 on the described grounded parts 60 round the bottom of the insulation booth 10 of ceramics insulator 50 on; And be fixed in the described dimple chamber 64 round the top of the insulating cylinder 70 that leads directly to conductor 30.Be perfused with resin material 11,71 in insulation booth 10 and insulating cylinder 70, resin material such as epoxy resin so that cover the medial and lateral of ceramics insulator 30, are used the humidity resistance and the insulation property that ensure ceramics insulator 30.

The pair of electrodes socket 40 of capacitor can be arranged on the bottom of described a pair of permanent joint 20 integratedly, each and separately permanent joint 20 integrally moulded shapings; Also can be split type, i.e. parts independently of one-tenth separately, be evenly distributed with some through holes 41 on each electrode socket 40, through hole 41 communicates with the peritreme of described through hole 51, the upper end of straight-through conductor 30 and permanent joint 20 are inserted solid, the mode that is aided with welding again is they in addition combinations, to guarantee both strong bonded degree of straight-through conductor 30 and permanent joint 20.When permanent joint 20 is taken straight-through conductor 30 and is installed on the ceramics insulator 50, and along with after electrode socket 40 and absolute electrode 52 solid weldings, through hole 41 on the electrode socket 40 communicates with residual pore or title peritreme that plant is coated with the through hole 51 of insulated tube straight-through conductor 30 after 80s, and the residual pore after plant is coated with the straight-through conductor 30 of insulated tube 80 of through hole 51 communicates with the tube chamber of insulating cylinder 70, so resin material 11 can enter insulating cylinder 70 via residual pore from through hole 41.So-called residual pore is meant after being overlying on insulated tube 80 covers on the straight-through conductor 30, will lead directly to conductor 30 and take after the insulated tube 80 insertion through holes 51 the remaining hole that produces around through hole 51.Will be after going up in order to get so that the more smooth insulating cylinder 70 that enters into of resin is distributed with some through holes 631 on described protruding 63 wall body, resin material can enter into the tube chamber of the insulating cylinder 70 of shrouding 72 tops quickly like this.

The tube chamber of the insulating cylinder 70 of capacitor is installed with a shrouding 72 in quadrate part position on the upper side, shrouding 72 has a pair of through hole 75 symmetrical distribution and that the straight-through conductor 30 of substantially parallel confession passed through that is, shrouding 72 is formed with a pair of sealed bladder 73 corresponding to the bottom of through hole 75, is embedded sealing in the blister cavities of sealed bladder 73 and encloses 74.After straight-through conductor 30 passes through through hole 75, sealing ring 74 was coated on the straight-through conductor 30.Like this from the resin material that pours into can not enter into the below of shrouding 72.Integrally formed when shrouding 72, sealed bladder 73, through hole 75 are shaped with insulating cylinder 70, the material of shrouding 72 is identical with the material of insulating cylinder 70.

So finished assembling as described above, entered after the assembling insulation booth 10, insulating cylinder 70 filling resin materials 11,71 to the utility model high-voltage through-type ceramic capacitor.Adopt epoxy resin embedding equipment make epoxy resin in the process of filling insulation booth 10 from through hole 41 via the residual pore of through hole 51 and under by means of the situation of through hole 631 and then enter into the tube chamber of the insulating cylinder 70 on shrouding 72 tops, as soon as after filling finishes resin material 71,11 in the tube chamber on shrouding 72 tops of insulating cylinder 70 and the insulation booth 10 whole box chambeies, just accuse perfusion and finish, treat promptly to have constituted the high-voltage through-type ceramic capacitor that technical solutions of the utility model provided behind the resin solidification.Thereby as can be known, the can of epoxy resin is carried out and is once finished, and the solidification effect of the resin material 71,11 in insulating cylinder 70, the insulation booth 10 is able to unanimity, and only need separate unit resin embedding equipment, both save equipment, omitted technology again, very favourable to reducing product cost.

Ask for an interview Fig. 5, as an Application Example of the present utility model, it has been installed on the filter hut 90 by screw 65 via through holes 62, the central position of this filter hut 90 is provided with aluminium stem stem 92 and a pair of choking-winding 91, aluminium stem stem 92 is positioned at the centre of a pair of choking-winding 91, aluminium stem stem 92 is connected with straight-through conductor 30 by choking-winding 91, and a pair of fastening 20 is then pegged graft with it by a pair of socket 93.The mechanism of action of the present utility model relates to owing in the documents of mentioning in front, so the applicant is no longer repeated.In addition, the above-mentioned embodiment that mentions is used for microwave oven or kitchen range with the utility model, when it is applied in the facility of commercial thawing apparatus, industrially drying device and so on, it installs principle and the mechanism of action is essentially identical, therefore, those skilled in the art should also can understand the similar object that the utility model is used fully.In addition, any as long as under the situation that does not deviate from the technical solutions of the utility model restricted portion with the variation slightly on form or the details, not will be understood that it is to have surmounted or claimed to have dissociated the technical solution of the utility model scope.

Claims

1, a kind of high-voltage through-type ceramic capacitor, it comprises: one has a pair of being and is symmetrically distributed and the ceramics insulator (50) of parallel through hole (51); The a pair of absolute electrode (52) that is formed at the not conducting each other of ceramics insulator (50) upper surface respectively; One piece be formed on ceramics insulator (50) lower surface and with the corresponding public electrode of described absolute electrode (52) (53); A grounded parts (60), there is an oval-shaped opening (61) at its middle part, along the periphery of opening (61) projection (63) of a tool certain altitude that fixedly gets on by means of public electrode (53) for ceramics insulator (50) is arranged, be formed with a dimple chamber (64) corresponding to the inner surface of projection (63); The a pair of straight-through conductor (30) that passes described through hole (51); A pair of fastening (20) of being fixed in straight-through conductor (30) top; The a pair of insulated tube (80) that is sheathed on the straight-through conductor (30); An insulation booth (10) and a insulating cylinder (70) around straight-through conductor (30) around ceramics insulator (50), insulation booth (10) bottom is fixed on the projection (63) of grounded parts (60), and the top of insulating cylinder (70) is fixed on the dimple chamber (64); A pair of respectively in order to plug pair of straight admittance body (30) and be individually fixed in electrode socket (40) on a pair of absolute electrode (52), be poured in resin material (11), (71) in insulation booth (10), the insulating cylinder (70), it is characterized in that described pair of electrodes socket (40) was furnished with through hole (41) last week, through hole (41) communicates with the peritreme of described through hole (51); The tube chamber of described insulating cylinder (70) portion on the upper side has additional a shrouding (72), shrouding (72) has a pair of being and is symmetrically distributed and through hole (75) that the parallel straight-through conductor (30) of confession passed through, the bottom of shrouding (72) also is formed with a pair of sealed bladder (73) corresponding to a pair of through hole (75), accommodates sealing ring (74) in the blister cavities of each sealed bladder (73) respectively.

2, high-voltage through-type ceramic capacitor according to claim 1 is characterized in that being evenly equipped with through hole (631) on the described wall body that is formed at the projection (63) on the grounded parts (60), and through hole (631) communicates with the tube chamber of insulating cylinder (70).

3, high-voltage through-type ceramic capacitor according to claim 1 is characterized in that described insulated tube (80), sealing ring (74) are wrapped in respectively on the pair of straight admittance body (30).