CN100521027C - Air-tight type low-voltage electrical apparatus with working contact and its oxygen-free seal method - Google Patents
Air-tight type low-voltage electrical apparatus with working contact and its oxygen-free seal method Download PDFInfo
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- CN100521027C CN100521027C CNB2006100909170A CN200610090917A CN100521027C CN 100521027 C CN100521027 C CN 100521027C CN B2006100909170 A CNB2006100909170 A CN B2006100909170A CN 200610090917 A CN200610090917 A CN 200610090917A CN 100521027 C CN100521027 C CN 100521027C
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Abstract
The invention is concerned with the airtight low voltage apparatus with working contact and its no-air sealing method. For example, the no air no arc AC contactor, includes the airtight room with the tegmen and the base, which is fixed with the electromagnetism operating system, the contact operating system, and the energy-saving rectifier circuit board, also, the fixed contact down-lead and the coil down-lead. The edge of the tegmen connects the base form the ring of notch. The edge of the base connects the tegmen form the ring of uplift, which joins with the notch makes the tegmen, the base become one, form the airtight room. The invention also provides the method of sealing, it is: conducts the anaerobic treatment to airtight room, fills in with the inert gases and sealant, which this way prolongs the no-air environment to ensure the performance of the moving/fixed contacts.
Description
Technical field
The present invention relates to the low-voltage electrical apparatus that a kind of hermetic type has working contact, particularly have the no arcing A.C. contactor of sealed chamber, and the method for sealed chamber oxygen-free seal.
Background technology
The similar low-voltage electrical apparatus that has working contact of Xiao Shouing in the market, contactor for example, its contact is operated in the air atmosphere, and the oxidation of contact is very serious.The oxidation of contact makes the conductive component of product produce the knot charcoal, strike sparks, draw fire, has significantly increased reactive loss, and it is too high to heat up, and useful life is low.As everyone knows, the loss that is produced during electric equipment products work generally is made up of factors such as reactive loss, galvanic corrosion and electrolysis, and wherein reactive loss accounts for more than 60%.People have expected working contact is sealed in the sealed chamber, compare with aerobic environment, and this is the effective ways that solve the contact oxidation and reduce reactive loss, can significantly improve the working life of electric equipment products in theory.But the airtight methods of products such as known contactor, relay, owing to make the enclosed environment difficulty, there is the defective of sealing difference in it, so can not satisfy user's instructions for use.
The patent No. is the patent of invention of 7-38055, it discloses a kind of technology of electromagnetic relay, this electromagnetic relay is made up of following parts: the solenoid in the magnetic field that produces, energising back, armature by field drives, driving by armature makes circuit produce the closure or openness device that movable contact board and fixed contact board constituted of closure or openness action, for with isolate from outer air, this prior art is with coil, armature, in the metal cabinet that opening and closing device etc. fit together, and to solenoid, armature, inject argon ion at least one parts in opening and closing device and the metal cabinet.The main method that this prior art control electric arc takes place is the depths of argon ion being injected metal cabinet wall surface 8um, by argon ion cooling electric arc and arc cutting.The available householder method that this prior art control electric arc takes place is to charge into the nitrogen that is approximately 97% pair 3% ratio and the inert gas of argon formation with 1.5-2 air pressure in the metal cabinet, but need not and must charge into.The major defect that the technical scheme of this prior art patent exists is:
1, the technology of injection argon ion is numerous and diverse, and processing cost height, arc quenching effect are also undesirable;
2, directly inert gas is charged into casing, promptly before charging into inert gas, do not make anoxybiotic in the casing and handle, thereby because of the effect of air residual in the casing, the oxidation of working contact, knot charcoal problem still can not be solved;
3, by base and the gluing casing that forms of housing, because the structural design on the gluing composition surface of base and housing is unreasonable, sealing effectiveness is bad;
4, the inert gas that is filled in the casing is a 1.5-2 atmospheric pressure, so there is serious leakage problem in casing, thereby influences the stability and the life-span of product.
Application number is that 021119376 application for a patent for invention discloses a kind of non-oxidation and do not have flashover current break-make device, this break-make device is formed sealed chamber at the end by shell,, on the outer hexahedral face of sealed chamber an air valve is housed, in order to processing to oxygen-free environment in the sealed chamber, task workpiece electromagnet, brachium pontis, contact are installed on the interior wing base of sealed chamber, and the contact wiring is drawn by the sealing binding post on the interior wing base.The technical characterstic that the disclosed non-oxidation of this patent application technology does not have arcing is: carry out the air valve that anaerobic is handled in one of airtight outdoor mounted is used for sealed chamber; Sealed chamber is by shell and base adhesive sealing; Fill in the sealed chamber with nitrogen, sulfur hexafluoride gas.This patent application technology realizes the anaerobic processing because of need by air valve, thus the manufacturing cost height, and production efficiency is low.Need on the basis of the design on the sticking composition surface of shell and base plate glue, further improve design, to realize better sealing effectiveness.
Because there is the defective that can not satisfy user's instructions for use in above-mentioned prior art, adopt the hermetically-sealed construction of above-mentioned prior art and the sealed chamber of the designed manufacturing of oxygen-free seal processing method, it is big to satisfy rated current at all, the A.C. contactor that life requirements is high,, useful life big 6 times as the rated transformation ratio GB is greater than the instructions for use of 30,000 times idle call alternating current tentaculum.The sealing problem of sealed chamber is to exchange to connect the ubiquitous technical barrier of low-voltage electrical apparatus that device, electromagnetic relay, current breaker etc. have working contact, up to the present, does not see the prior art that can better solve this difficult problem as yet.
Summary of the invention
Purpose of the present invention, be to overcome the defective of above-mentioned prior art, the low-voltage electrical apparatus and the oxygen-free seal method thereof that provide a kind of hermetic type to have working contact, this sealed chamber structure and oxygen-free seal method thereof, go for A.C. contactor, electromagnetic relay, current breaker etc. and have the multiple low-voltage electrical apparatus of working contact, working contact is worked under the anoxybiotic environment, do not produce oxidation and oxidation loss, can not generate the charcoal knot, temperature rise is very little, thereby has guaranteed security of products, reliability and stability; And simplified the sealing manufacturing process, significantly reduced production cost.
To achieve these goals, the present invention has adopted following hermetically-sealed construction and encapsulating method.
Hermetic type of the present invention has the low-voltage electrical apparatus of working contact, be arranged in the sealed chamber of forming by loam cake and base, in sealed chamber, be equipped with by armature, yoke, the electromagnetism work system that coil is formed, by moving contact, fixed contact, contact work system and rectification economizer circuit plate that stage clip is formed, be externally connected with fixed contact terminal pin and coil lead pin at sealed chamber, on described loam cake and mutual opposed two composition surfaces of base, a composition surface is a groove structure, another composition surface is a bulge-structure, groove by two composition surfaces cooperates with the embedding of bulge-structure, loam cake and base be tightly connected is one, forms sealed chamber; Will be with glue in described two the engage grooves faces and the sealing of the seam gap sealing between the bump bonds face of loam cake and base; When the fixed contact lead elements and production method thereof is drawn outside sealed chamber in the sealed chamber, the intermediate portion is at the place, composition surface by groove and bulge-structure, make the curved shape that is complementary with convex-concave surface, its sweep snaps in the breach of described groove structure, and when the composition surface by loam cake and base, be hidden in fully in the fluid sealant in the groove.
Described fixed contact lead elements and production method thereof and fixed contact, fixed contact terminal pin can be integrated, and be also discrete.Described coil lead element and coil lead pin can be integrated, also can be discrete.Forming loam cake, the base of sealed chamber is made by the pressing mold plastics.The air pressure of the inert gas of filling in the sealed chamber that anaerobic is handled equates with the atmospheric pressure outside the sealed chamber, or keeps the inside and outside air pressure balance of sealed chamber.
To achieve these goals, the present invention also adopts the following anaerobic that matches with said structure to handle, fill the method for inert gas and potting compound sealing: at first be that sealed chamber integral body is placed in the anaerobic treatment facility, for ease of containing glue, the recess of the groove on the described groove structure composition surface is made progress to groove; The secondth, will vacuumize in the sealed chamber by the anaerobic treatment facility, carry out the vacuum anaerobic and handle; The 3rd is to fill inert gas in sealed chamber, makes the air pressure and the outer atmospheric pressure balance of sealed chamber of the inert gas in the sealed chamber; The 4th is to make in the described groove to fill with glue, fills fluid sealant in groove structure, and the composition surface of the sweep of the composition surface of described bulge-structure, described each lead elements and production method thereof is hidden by the fluid sealant in the groove structure fully; The 5th is by time and the temperature set fluid sealant to be cured, and loam cake, base and the sealing of each lead elements and production method thereof are bonded as one, and makes fluid sealant meet the requirements of adhesive strength.
In sum, the hermetically-sealed construction of sealed chamber of the present invention owing to adopted concaveconvex structure to be connected between loam cake and the base, has adopted bending to snap in structure between lead elements and production method thereof and loam cake, the base and has been connected, has strengthened the area that glue seals, improved sealing greatly.In addition, because groove structure can be contained glue,, improved production efficiency, reduced manufacturing cost so improved the technology that glue seals quality, simplified the glue envelope greatly.After tested, the present invention has following advantage:
1, owing to carried out the deaeration in condenser processing in the sealed chamber, and filled inert gas, the air pressure balance that sealed chamber is inside and outside, electric arc will not be to external leakage, dwindled the arc safety space, installation direction without limits, thereby dwindled the volume of product greatly, expanded simultaneously the scope that product uses greatly, as household electrical appliances, air-conditioning, chemical workshop, war products, Aerospace Products, network communication product and inflammable and explosive occasion etc.;
2, because the inside and outside air pressure of sealed chamber is balance, so loam cake and base can adopt the pressing mold plastics, technology is simple, greatly reduces production cost, has dwindled small product size, has alleviated product weight, has simplified manufacturing procedure, has improved production efficiency.
3, the lid of the sealed chamber made of pressing mold plastics and pedestal have utilized the principle that groove is contained glue, be easy to realize that sealing makes, and the sealing property of sealed chamber are good especially, thereby have guaranteed that inert gas does not leak, and have guaranteed the non-oxidation of electrical equipment, no arcing.Owing to there is not idle oxidation loss, the life-span is increased substantially, contrastive test experimental results show that than the like product life-span Senior Three of prior art doubly.
Description of drawings
Fig. 1 is the outline drawing that airtight non-oxidation of the present invention does not have arcing A.C. contactor embodiment.
Fig. 2 is the cutaway view of the no arcing A.C. contactor of airtight nothing gasification of Fig. 1.
Fig. 3 is the cutaway view of the syndeton of the non-oxidation of the present invention fixed contact terminal pin that do not have arcing A.C. contactor embodiment, groove and projection.
Embodiment
An embodiment who does not have the arcing A.C. contactor below in conjunction with hermetic type non-oxidation of the present invention shown in the drawings describes the low-voltage electrical apparatus that hermetic type of the present invention has working contact in detail.
As shown in Figure 1, airtight non-oxidation of the present invention does not have the arcing A.C. contactor, comprises a sealed chamber of being made up of loam cake 1 and base 2, and coil lead pin 4 and fixed contact terminal pin 13 are housed outside sealed chamber.
As shown in Figure 2, the electromagnetism work system is housed in sealed chamber, described electromagnetism work system comprises armature 7, yoke 8, coil 6, and yoke 8 and solenoid 6 are installed on the base, and armature 7 drives the contact bridge activity.The contact work system also is housed in sealed chamber, and described contact work system comprises: moving contact 10, fixed contact 3 and stage clip 12, the contact work system realizes the break-make task of A.C. contactor.
Direct current chemical control system coil also is housed in sealed chamber, described control coil comprises economizer circuit plate (not shown in the accompanying drawing) and dc coil 6, its function is: rectification circuit is converted to direct current with alternating current and loads on dc coil, make contactor realize that AC and DC is general, firm and hard the energy-saving and cost-reducing of product that show of economizer circuit.
The operation principle of the embodiment of A.C. contactor of the present invention is described below in conjunction with Fig. 2.Energizing quantity is by coil lead pin 4 input solenoids 6, the electromagnetism work system of being made up of solenoid 6, yoke 8, armature 7 produces magnetic field because of the input of energizing quantity, armature 7 overcomes the elastic force of stage clip 12 and does closing motion with respect to yoke 8 under the effect of magnetic force, meanwhile, armature 7 drives moving contact 10 and makes closing motion with respect to fixed contact 3, thereby realizes the closure of contactor; When removing energizing quantity, magnetic field in the electromagnetism work system disappears because of the removal of energizing quantity, the magnetic force that just overcomes the elastic force of stage clip 12 is eliminated, thereby under the elastic force effect of stage clip 12, armature 7 is done disengaging movement with respect to yoke 8, meanwhile, armature 7 drives the disengaging movement of moving contact 10 works and fixed contact 3, thereby realizes the separation of contactor.
The loam cake 1 of A.C. contactor embodiment of the present invention is as follows with the design feature that base 2 forms sealed chamber: as Fig. 2, shown in Figure 3, on the edge of loam cake 1 and composition surface that base 2 is connected, a circle groove 5 is arranged, on the edge of base 2 and composition surface that loam cake 1 is connected, a circle projection 11 is arranged, by the groove 5 on the 11 embedding loam cakes 1 of the projection on the base 2, loam cake 1 and base 2 be tightly connected is one, thereby forms sealed chamber.
The loam cake 1 of the embodiment of A.C. contactor of the present invention is as follows with the sealed characteristic on the composition surface of base 2: as Fig. 2, shown in Figure 3, in the groove 5 of loam cake 1, filled with fluid sealant 9, use groove and contain the principle of glue, the composition surface of groove 5 and projection 11 is sealed tightly be bonded as one.
As Fig. 2, shown in Figure 3, the fixed contact 3 in the contact lead element 14 of the embodiment of A.C. contactor of the present invention, one end and sealed chamber is an one, and the other end is fixedlyed connected with the fixed contact terminal pin 13 outside the sealed chamber.When described contact lead element 14 is outwards drawn in sealed chamber, the intermediate portion is located with the composition surface of the projection 11 of base 2 at the groove 5 by loam cake 1, make the curved shape that is complementary with convex-concave surface, its sweep snaps in the breach of loam cake 1, and when passing through the composition surface of loam cake 1 and base 2, be hidden in fully in the fluid sealant 9 in the groove, the tight sealing in composition surface of the surface of the sweep of lead elements and production method thereof 14 and groove 5, projection 11 is bonded as one.
Similarly, the coil 6 in an end of described coil lead element (not shown in the accompanying drawing) and the sealed chamber is electrically connected, and the other end is fixedlyed connected with sealed chamber coil lead pin 4 outward.The structure that is tightly connected that structure and contact lead element outwards draw in the sealed chamber that is tightly connected that described coil lead element is outwards drawn in the sealed chamber is identical, does not repeat them here.
The following describes the method for deaeration in condenser, filling inert gas and the sealant pouring and sealing of A.C. contactor of the present invention.
The first step is placed on the product of as shown in Figure 2 installation in the anaerobic treatment facility, the opening that makes the groove 5 on the loam cake 1 up so that make groove contain glue.
Second step, utilize anaerobic equipment that sealed chamber is vacuumized, carry out deaeration in condenser and handle.
The 3rd step, utilize anaerobic equipment to fill inert gas to sealed chamber, for example nitrogen, sulphur hexafluoride or argon make the air pressure of the inert gas in the sealed chamber equate that with sealed chamber atmospheric pressure outward promptly the sealed chamber inner and outer air pressure reaches balance.
The 4th step poured into fluid sealant 9 in groove 5, the sweep of projection 11 bossing, lead elements and production method thereof is hidden in the fluid sealant 9 in the groove 5 fully, thereby loam cake 1, the end are sat 2 and the bonding in the lump sealing of lead elements and production method thereof.
In the 5th step, under the state that groove 5 openings make progress,, make it meet the requirements of adhesive strength by time and the temperature-curable fluid sealant 9 set.
The low-voltage electrical apparatus that hermetic type of the present invention has a working contact is not limited to the non-oxidation of above-mentioned specific embodiment does not have the arcing A.C. contactor.
Claims (7)
1. a hermetic type has the low-voltage electrical apparatus of working contact, described low-voltage electrical apparatus comprises the sealed chamber of being made up of a loam cake (1) and a base (2), in described sealed chamber, the electromagnetism work system is housed, contact work system and the rectification economizer circuit plate be made up of moving contact (10), fixed contact (3), stage clip (12) are housed, be externally connected with fixed contact terminal pin (13) and coil lead pin (4) at sealed chamber
It is characterized in that:
On mutual opposed two composition surfaces of described loam cake (1) and base (2), one of them composition surface is groove structure (5), and another composition surface is bulge-structure (11);
Groove structure by described two composition surfaces cooperates with the embedding of bulge-structure, and loam cake (1) and base (2) are tightly connected mutually is one, forms sealed chamber;
When fixed contact lead elements and production method thereof (14) that is used to be electrically connected and coil lead element are drawn outside sealed chamber in the sealed chamber, it is at the composition surface place of groove structure (5) with bulge-structure (11), along convex-concave surface and crooked matchingly with convex-concave surface, make the curved shape that is complementary with convex-concave surface, its sweep snaps in the breach of described groove structure (5), and when passing through the composition surface of loam cake (1) and base (2), be hidden in fully in the fluid sealant in the described groove structure (5);
With glue the seam gap sealing between described engage grooves face and the bump bonds face is sealed, the sweep of convex portion, fixed contact lead elements and production method thereof and the coil lead element of bulge-structure (11) is hidden by the fluid sealant (9) in the groove structure (5) fully, thereby be one the crooked composition surface adhesive sealing of described engage grooves face, bump bonds face, fixed contact lead elements and production method thereof and coil lead element.
2. have the low-voltage electrical apparatus of working contact according to the hermetic type of claim 1, it is characterized in that: described fixed contact lead elements and production method thereof (14) can be integrated with fixed contact (3), fixed contact terminal pin (13), and is also discrete.
3. have the low-voltage electrical apparatus of working contact according to the hermetic type of claim 1, it is characterized in that: described coil lead element and coil lead pin (4) can be integrated, also can be discrete.
4. have the low-voltage electrical apparatus of working contact according to the hermetic type of claim 1, it is characterized in that: loam cake (1), the base (2) of forming sealed chamber are made by the pressing mold plastics.
5. have the low-voltage electrical apparatus of working contact according to the hermetic type of claim 1, it is characterized in that: the air pressure of the inert gas of filling in the sealed chamber that anaerobic is handled equates with the atmospheric pressure outside the sealed chamber, or keeps the inside and outside air pressure balance of sealed chamber.
6. the low-voltage electrical apparatus that the described hermetic type of claim 1 is had a working contact carries out that anaerobic is handled and the method for sealing, comprises following method step:
The product of finishing parts installation procedure in the sealed chamber opening position up with groove structure (5) is placed in the anaerobic treatment facility;
Utilize the anaerobic treatment facility that sealed chamber is vacuumized, carry out anaerobic and handle;
Utilize the anaerobic treatment facility in sealed chamber, to fill inert gas, the air pressure that makes the inert gas in the sealed chamber and sealed chamber outward the atmospheric pressure balance or equate;
In groove structure (5), fill fluid sealant (9), the composition surface of the sweep of the composition surface of described bulge-structure (11), described each lead elements and production method thereof is hidden by the fluid sealant (9) in the groove structure (5) fully;
Fluid sealant (9) is solidified in retaining groove structure (5) opening position up, and loam cake (1), base (2) and the sealing of each lead elements and production method thereof are bonded as one.
7. carry out according to the low-voltage electrical apparatus that hermetic type is had a working contact of claim 6 that anaerobic is handled and the method for sealing, it is characterized in that: the inert gas of filling in described sealed chamber is nitrogen, sulphur hexafluoride or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100909170A CN100521027C (en) | 2006-07-03 | 2006-07-03 | Air-tight type low-voltage electrical apparatus with working contact and its oxygen-free seal method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100909170A CN100521027C (en) | 2006-07-03 | 2006-07-03 | Air-tight type low-voltage electrical apparatus with working contact and its oxygen-free seal method |
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| Publication Number | Publication Date |
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| CN101101833A CN101101833A (en) | 2008-01-09 |
| CN100521027C true CN100521027C (en) | 2009-07-29 |
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| CNB2006100909170A Active CN100521027C (en) | 2006-07-03 | 2006-07-03 | Air-tight type low-voltage electrical apparatus with working contact and its oxygen-free seal method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5856426B2 (en) | 2011-10-07 | 2016-02-09 | 富士電機株式会社 | Contact device and electromagnetic contactor using the same |
| CN103258688A (en) * | 2012-02-16 | 2013-08-21 | 高建忠 | Anti-explosion reactive power contactor |
| CN103050818A (en) * | 2012-12-19 | 2013-04-17 | 镇江日鑫电子有限公司(中外合资) | Jack connector |
| CN105097358A (en) * | 2014-05-19 | 2015-11-25 | 浙江道为尔科技有限公司 | Electromagnetic power switch |
| CN105575701B (en) * | 2016-03-03 | 2018-03-23 | 北京平开智能电气有限公司 | Low inflation switching device |
| JP6756453B1 (en) * | 2019-05-30 | 2020-09-16 | 三菱電機株式会社 | Electromagnetic switch device for auxiliary relay and starter |
| CN110164731B (en) * | 2019-06-12 | 2020-11-17 | 贵州天义电器有限责任公司 | Air balance relay |
| CN114150337A (en) * | 2021-11-01 | 2022-03-08 | 山东海氢能源科技有限公司 | Electrolytic tank frame with bipolar plates, electrolytic unit and electrolytic equipment |
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