• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Plug-in connector housing consisting of two parts (1, 1 '), each comprising a respective metal sheath (2, 2'), preferably of aluminum alloy, suitable for housing at least one respective contact element (3). , 3 ') connectable to a conductor of a cable, comprising at least one locking device (4) and at least one seal (6, 6') of an elastomeric material, said metal sleeve (2 , 2 ') comprising a corrosion and erosion-resistant protective coating (7) at least along its outer surface, wherein said corrosion and erosion-resistant protective coating (7) consists of at least one electrolytic ceramic coating (8).
    公开号:FR3039714A1
    申请号:FR1657201
    申请日:2016-07-27
    公开日:2017-02-03
    发明作者:Emilio Germani
    申请人:Industria Lombarda Materiale Elettrico ILME SpA；
    IPC主号:
    专利说明:

    CORROSION AND EROSION PROTECTED CONNECTOR CONNECTOR HOUSING The object of the present invention is a plug-in connector housing, protected against corrosion and erosion, according to the preamble of claim 1.
    In particular, the invention relates to a plug-in connector housing having improved corrosion and erosion resistance over known types of art.
    The other features of the invention described below are such as to impart to said electrical plug connector housing, in addition to improved corrosion resistance, high mechanical abrasion resistance, or high temperature resistance. high.
    In the prior art, there are several known types of electrical plug connector housings, preferably made of various types of materials, either metallic or insulating. Metal materials offer the advantage of being mechanically stronger and providing protection against electromagnetic interference to the electrical connectors placed inside them, thanks to the electrical conductivity of the housing. A major disadvantage of many metal pluggable electrical plugs, however, is that their surface corrodes and that, as a result of said corrosion, the technical functionality of the plug-in connector can be compromised due to the progressive loss of the surface layers of the plug. housing material, with a deterioration of the degree of protection. Even if one does not achieve functional deterioration, it is still important to maintain the integrity of the aesthetic appearance.
    In the prior art, there are various methods for protecting the surface of a metal housing of an electrical plug connector from corrosion. A typical form is a powder coating made with a suitable thermosetting powder paint polymer matrix (eg polyester, epoxy, or a combination of both). In particular for industrial-type heavy-duty multipole electrical connectors, it is usual in the prior art for the surface of metal housings, typically made of cast aluminum, to be protected by a protective coating, on the one hand for get the protection against corrosion, on the other hand to get a nice aesthetic appearance.
    Particularly in pluggable connector housings heavy loads industrial type, which also have a locking device, for example type snap-hook locking levers (eg latching hook-like locking levers of the type described EP 0352579 A1 (ILME), or DE 20 2004 004 619 UI (ILME)), or having screws or pins terminating with a bayonet, it is possible that different (dissimilar) metallic materials come into contact with each other. reciprocal contact, directly or indirectly. Thus, for example, the locking device having latching locking levers may be made of stainless steel hooks, while the plug connector housing in question is made of aluminum or zinc alloy for casting molding. Other combinations of materials can be made in practice, depending on the uses. In the presence of a conductive atmosphere, for example due to condensation of moisture or stagnation of water and an electrolyte on the surfaces of said housing, for example sodium chloride derived from the brackish atmosphere at the edge of sea, this can pose the problem of corrosion by contact between the more noble metal and the base metal, less noble, because of the appearance of a reference electrochemical potential difference between the less noble base metal ( eg aluminum alloy) and that of locking levers (eg stainless steel). The possible consequences of the contact of the base materials with the different reference potentials are well documented in the technical literature. The greater the difference in electrochemical potential, ie the more the metals in contact are spaced from each other in the series of electrochemical potentials (see for example Table CIE 60950-1, Appendix J), plus the Corrosion effects are high.
    Also known in the prior art are protective coatings and surface modifications which determine a beneficial change of electrochemical potential references, such as nickel plating, or hard chromium plating, or conversion coating (chromate) with yellow chromate. These coatings exhibit complex behavior in combination with base metals. The modified electrochemical self-formed potential is also dependent on the layers formed therein. By means of measurement methods such as the "density-current potential" curves (Evans diagrams) with a suitable electrolyte, the corresponding reference electrochemical potential can be determined.
    A plug-in connector housing of the type which is the subject of the present invention is designed and intended to protect effects of the external environment from contact elements installed inside said housing. The housing normally includes at least one opening through which a recessed cable can be introduced, the individual conductors of said cable being brought into contact with the corresponding contact elements of an insert of multipole electrical plug connectors. In general, these elementary conductors are used for the transmission of an electric current (power supply), in order to supply the circuit electrical devices downstream of the electrical plug connector. In the same housing, depending on the type of plug-in connector element installed inside, more than one parallel channel may also be provided, of a different type of electrical, for example conduction lines for pneumatic transmission and / or conductors for optical fiber contacts, for the transmission of optical signals.
    The main task of a plug-in connector housing is essentially the protection against the external influences of the contact inserts and the electrical, pneumatic or optical fiber contacts in question, arranged inside said connector housing, this which also guarantees the protection of people (users) against what is called a direct contact, therefore the risk of electrocution (electric shock). Since these are essential safeguards, a high degree of reliability is required for the plug-in connector housing.
    Plug-in connector housings, particularly those of the metal type, suitably chosen, are often used in applications in which the connectors are subject to strong mechanical influences, eg vibration, shock, acceleration, as well as conditions. severe environmental conditions such as extreme temperatures, precipitation, wind, solar radiation, salty air, chemical pollution, etc.
    In the market, attention is focused on the most cost-effective technical solutions, but keep in mind that for the plug-in connector housing, the savings should not be at the expense of the growing need for security and reliability. protection. When the initial investment seems favorable, it often results in significant maintenance costs for the complete replacement of the plug-in connector housings prematurely deteriorated by harsh environmental conditions. In this respect, the prior art already proposes the use of various types of protective coating applied to the connector housing; the use of stainless steel is then one of the most common measures to achieve improved corrosion protection, but this makes the connector housing much more costly because it can only be manufactured at a cost Student.
    A major problem that arises in practice, particularly in the field of application in aggressive atmospheres, is the corrosion of said pluggable connector metal housings, as described above, especially contact corrosion due to a different electrochemical potential between metals. dissimilar placed in contact. Even when using cast aluminum alloys, the connector housings are regularly subject to galvanic corrosion. When thermosetting polymer protective coatings, for example of the pulverulent type previously described, are used, filiform corrosion and / or corrosion resulting from the migration beneath said protective coatings accumulates, in particular under the layers of protective paint applied. This corrosion is initially a cosmetic defect, but over time, it can lead to a loss of the degree of protection provided by the speakers.
    A common practice for the application of an upper protective layer, which primarily has aesthetic functions, provides the preventive application of passivation, with the activation in question of the surface, to improve adhesion and to improve the performance of the subsequent application of said protective layer. These intermediate or additional passivation layers are expensive, but necessary in order to improve, on the one hand, the coating and its adhesion and, on the other hand, to prepare the next painting operation.
    These passivation processes are the gateway to other problems caused by the legal provisions concerning the preservation of the ecosystem: chromate and hexavalent chrome pretreatments are banned on the market, following the RoHS Directive. the European Union (Restriction of Hazardous Substances), with similar regional regulations in force
    China, the United States and for example in the naval sector (IMO), and since then they can no longer be used.
    This has led to particular problems in the standard painting processes, in which it was necessary either to eliminate or modify said pretreatments, since these were no longer allowed. Alternatives to these that have become available on the market, such as, for example, chromate conversion treatments based on trivalent chromium or fluoride-zirconium, have not been able to guarantee the same or better results. results, in terms of corrosion resistance performance, than the obsolete chromium conversion treatment based on hexavalent chromium. Other problems have arisen from the increasing application of heavy-duty plug-in connector housings for industrial-type applications in the context of railway rolling stock, for example for connections between rail vehicles or for under-carcass electrical connections. of the vehicle or on the bogies of the same wagons between the different parts of the electric traction equipment, for a maintenance capacity by facilitated replacement, with a reduction of the immobilization of the rolling stock. In these fields of application, where couplings of pluggable electrical connector housings are frequently exposed to an external environment, the corrosive effects of the sea and / or industrial atmospheres traversed by the rolling stock will be added to those of the abrasion of the protective coating of the electrical plug connector housing under the effect of micro / macro-shocks which materialize on said housings, as a result of flying gravel, foreign objects and dust from the bed of the road [ballaste ], the projection being amplified by the speed of the rail vehicles themselves, that railway technology tends to increase gradually, generally for all types of rail vehicles and in particular for high-speed trains.
    It is necessary to give the outer protective coating of said plug-in connector housings particular resistance to shocks and the effects of ablation, which are simulated for example by the methods of ISO 20567-1 (impact resistance test by gravel) and CIE 60068-2-68 (sand blast test).
    Sand and gravel impact points in metal plug-in connector housings more commonly known in the art, including those for heavy duty industrial applications, in which there is only a protective coating by means of a powdery coating (eg epoxy, although having good abrasion resistance) can in some cases reach the base metal of said housing and such a discontinuity of the protective coating can act as a starting point for corrosion under film [crust].
    The heavy duty connector housings described in DE 102012102275.5 (Harting) have recently been introduced in the prior art, having an outer coating made of a polyurethane-based polymeric material, molded onto a plug-in connector metal frame (housing ) consisting for example of a cast aluminum alloy. Said housings offer resistance to mechanical shock mentioned above, good chemical resistance, excellent resistance to salt corrosion, but suffer from a reduced resistance to temperature, typical industrial multipole pluggable industrial connectors, normally suitable for operation in the temperature range between -40 ° C and + 125 ° C. The polymeric materials used, to provide at the same time a wide range of performance of fire resistance, toxicity and opacity of fumes (ie those fixed by the standard EN 45545-2), which are not required, since not applicable, to metal plug-in connector housings, are expensive and in any case limit - for the particular technology used (RIM = Reaction Injection Molding = reaction injection molding) - the maximum temperature of use of said plug-in connector housings and therefore, plug-in inserts in question placed therein at +85 ° C. The particular technology adopted also requires the realization of new dedicated equipment (molds) for overmolding the polyurethane rubber, thus making them extremely expensive and limiting the possibilities of supply, making it impossible to reuse the pieces of plug-in electrical connector housings already available. On the transition points (cable outlets, screw holes), threaded bushings made of a special noble metal (eg stainless steel) supplied separately, must also be installed by the user, with a rise in total costs. product for the user. The object of the present invention is to provide an electrical plug-in connector housing, in particular equipped with locking devices, in which the material of the plug-in connector housing preferably consists of aluminum and the material of the locking device consists of preferably stainless steel, being provided with increased protection against corrosion, provided by a corrosion-resistant protective coating which significantly increases the corrosion resistance.
    Another object of the present invention is to provide such a pluggable connector housing which also provides outstanding gravel impact resistance and sand blasting abrasion, by virtue of a surface hardness and the adhesion and abrasion resistance of the particular protective coating, without compromising the typical operating temperature range of said connectors.
    Another object of the present invention is to enable the connector housing to be usefully equipped with elastomeric gaskets specifically selected to withstand both cold (low ambient temperature) and warm (high ambient temperature), such as silicone. The combination with said corrosion-resistant, particularly high-temperature-resistant protective coating enables plug-in connector housings which, in addition to being extremely resistant to corrosion, far exceed the resistance values obtained up to present by the heavy-duty industrial plug-in connector housings already indicated for aggressive environments, of the known art, are also resistant to both low and high temperatures, as well as shocks caused by gravel and abrasive blow-molding. sand, an essential factor when the phenomenon is combined with the presence of corrosive atmospheres.
    Another object of the present invention is to provide a cost-effective [low cost] plug-in connector housing with respect to increased corrosion resistance, high and low temperature resistance, mechanical impact strength and resistance to corrosion. abrasion, in conjunction with increased life, thus rendering unnecessary any need for periodic replacement, as is done when it is subjected to any of the environmental constraints described above, because of the virtual absence need for periodic replacement for a deterioration of the aesthetic appearance, and which does not have all the disadvantages of known prior art products.
    In particular, the invention is intended to provide a heavy-duty pluggable connector housing for industrial environments, both indoors and outdoors, or for example in the railway field for outdoor use and / or in marine environments, both on the seaside (on the coast) and on the high seas (ships, off-shore platforms) for outdoor use, which - even when using dissimilar materials - shows no signs corrosion or negligible corrosion marks only after extremely prolonged exposures to the corrosive atmosphere and atmospheric phenomena typical of these environments.
    Another basic object of the present invention is to provide a virtually feasible plug-in connector housing without specific dedicated equipment in all combinations of mounting configurations for the currently available standard (normal) configurations which, for each construction size, is further distinguished on the basis of: (a) the size (threading), number and position of the cable outlets (horizontal, vertical, frontal), (b) the type of locking lever device (eg with snap locking levers of the types previously described, or bayonet or screw-lock pins), (c) the type of seal, which depends on maintaining the highest IP degree of protection in accordance with the EN 6052 9 under the various conditions of use, for example in relation to the need for increased resistance to chemicals and / or ext dreams, both high and low.
    These and other objectives are achieved by the electrical plug connector housing according to the invention which has the features of claim 1 in the appendix.
    Advantageous embodiments of the invention are obtained from the dependent claims.
    Basically, the plug-in connector housing according to the invention is composed of two parts, each comprising a respective metallic sheath preferably made of aluminum alloy, suitable for housing at least one respective contact element that can be connected to a conductor. a cable, comprising at least one locking device and at least one seal constituted by an elastomeric material, said metallic sheath comprising a protective coating resistant to corrosion and erosion at least on its outer surface, wherein said corrosion and erosion resistant protective coating comprises at least one electrolytic ceramic coating.
    The present invention solves the problem by identifying a specific and innovative combination of subsequent protective materials and coatings, specifically optimized for the plug-in connector housing of the type described.
    The other characteristics of the invention will become clearer on reading the detailed description which follows, with reference to merely exemplary, therefore nonlimiting embodiments, illustrated in the accompanying drawings, in which: FIG. 1 shows, in axonometric view, a closed coupling of housings of the type which is the subject of the present invention, the fixed housing being in particular provided with at least one locking element of the lever type with a latching and the free housing [ bonnet], at least two locking pins for the corresponding [locking] lever; FIG. 2 shows, in axonometric view, the coupling of FIG. 1 open, for illuminating the support inserts of the contacts - respectively male and female plug-in connector inserts - housed in said housings, and other details. of the example described; - Figure 3 shows, in axonometric view, the free housing [bonnet] of Figure 1 cut appropriately in cross section and with the relevant detail of the protective coating; Figure 4 shows, in axonometric view, an alternative embodiment of the free housing [bonnet] of Figure 1, suitably cut in cross-section and with the relevant detail of the protective coating. In particular, in this embodiment, said protective coating is devoid of the outer final coating which is present in the example of Figure 3; FIG. 5 shows, in axonometric view, an alternative embodiment of the coupling of the housings of FIG. 1, juxtaposed and in the open position, in particular equipped with screw locking elements (respective screws and nuts) and joints. O-ring type seal, placed in special seats along the inside perimeter of the bottom or edge face (not visible) of the fixed housing portion, and near the edge of the upper interface of said housing fixed; FIG. 6 shows, in axonometric view, another alternative embodiment of the fixed housing of FIG. 1, equipped with the respective connector insert, but equipped, in a variant, with a different type of locking lever with snap-in , in particular of the type described in DE 2004004 619 U1;
    Referring to Figure 1, said coupling includes two housings 1, 1 ', respectively fixed 1 and free 1'; Couplings between housings both free or fixed, although less frequent, are always possible. Said two housings consist of the same materials. The description of the fixed housing 1, for technical equivalents, therefore also applies to the free 1 '. Each part of the housing coupling - fixed 1, free 1 '- comprises a metal sheath 2, 2', in particular made of a cast aluminum alloy.
    Referring to Figure 2, the fixed housing 1 typically houses a contact support insert (connector insert) of the outlet type 3, with female contacts, while the corresponding free housing 1 'houses an insert 3-pin plug-in contact carrier (connector insert), having male contacts. Couplings between housings in which the positions of the male and female type contact support inserts are reversed, although less frequent, are still possible. The fixed plug-in connector housing 1 is provided with at least one locking device 4 near the outlet opening of the housing itself, for example of the latching locking lever type described in document EP 0352579 A1, consisting of in moving parts made of a metal different from that which constitutes the sheath 2 of the housing, for example made of stainless steel, and fixed by means of hinge pins 5, riveted or screwed into the side walls of the sheath 2 of the housing fixed 1, said pins 5 being also made of stainless steel. Dust and liquid tightness (degree of protection IP65 or higher according to EN 60529) is guaranteed by 6 interface seals and 6 'flanges, made of an elastomeric material suitable for the range of operating temperatures and expected environmental conditions. In the preferred embodiment described herein, without limitation to other variants, said seals consist of a fluoroelastomer (FKM or FFKM, FPM or FEPM according to ASTM D 1418 or ISO 1629), for example of the type known in the trade under the name of Viton®.
    Referring to FIG. 6, in an alternative embodiment comprising a latching locking lever of the type described in document DE 202004004619 U1, the articulation pins of the levers 5 can form an integral part of the casing, thus by molding. by casting, and also be cast cast aluminum alloy, and in turn, provided with the protective coating described hereinafter.
    Referring to FIG. 3, and - if applicable - to FIG. 4, the cast aluminum cast metal sheath 2 'of the free casing 1' is subjected to a treatment consisting for example of a sand blowing cycle, as adhesion promoter of a subsequent protective coating resistant to corrosion and erosion 7. Said metal sheath 2 'is coated, after another suitable cleaning treatment surfaces - consisting for example of a degreasing cycle alkaline, followed by rinsing, for the protection against subsequent etching of the acids, followed by final rinsing and drying - of a first protective layer 8, consisting of ceramic coating of titanium oxide, distributed uniformly, and obtained by electrolytic deposition, of a substantially uniform thickness which can typically vary, depending on the process and materials used, between 2 μπι and 15 μπι but which has has been optimized, for the housing of the present invention, in the range between 10 μπι and 15 μπι. Said first protective layer 8 is characterized by a high surface hardness, combined with excellent flexibility (resistance to bending and stretching of any subsequent processing of coated articles), excellent resistance to frictional wear, excellent resistance to atmospheric and marine corrosion, excellent resistance to heat, absence of heavy or toxic metals (such as chromium).
    A disadvantage of said ceramic coating, in spite of the advantageous mechanical properties described above and the tenacious adhesion to the base metal, is the limited resistance to frictional abrasion or projection of sand or gravel. Said deposit being relatively thin (between 10 μπι and 12 μπι) for the parts of the housing subjected to wear, such as the locking tabs 11 of the locking levers of the housings, or - if one refers to Figure 6 - the hinge pins 5 of the levers themselves, the realization - where possible - as additional stainless steel parts (pins and hinge pins applied on cast-cast housings and secured by riveting or screwing) is preferable , despite the fact that contact between dissimilar metals (stainless steel and aluminum) is not among the most desirable.
    Another disadvantage of said titanium oxide ceramic coating having arisen in a first series of neutral salt spray experimental corrosion tests (test performed according to UNI EN ISO 9227) is a degree, hardly contained, of residual porosity. said coating, evidenced from the occasional surfacing of red dots which have been found to be iron oxide, emerge from the matrix of the cast aluminum alloy sheath below said coating.
    For the purposes of (a) filling the residual porosity of said ceramic protective coating and (b) promoting the adhesion of another optional external protective coating, said ceramic protective coating is further chemically coated. or electrolytically, a thin coating of an organic sealant 9, transparent, based on organic polymers in aqueous solution, in particular based on acrylic resin or alkyl resin, having a thickness of between 500 nm and 1000 nm.
    Referring to the detail of FIG. 3, in order to give the outer surfaces of the casing the best abrasion resistance by blasting sand or gravel, the organic sealant coating is then covered with a coating. final exterior 10, obtained by an electrostatic painting cycle with thermosetting polymer powder, in the example described here, without limitation to other types, epoxy type, having a thickness between 60 μπι and 12 0 μπι , further having an additional barrier effect against contact with chemically aggressive substances for the underlying base metal, and the decorative effect.
    Referring to the detail of Figure 4, said organic sealant coating 9, itself being wash-resistant with typical acid and alkaline cleaners used in the industry, renders the final thermosetting outer coating 10 described in the example of the optional Figure 3, which, instead of being normally transparent, is colored by a suitable pigmentation to give the coating itself, in this case, the final, a color different from the gray color dark typical of the first protective layer 8 consisting of a ceramic coating of titanium oxide. In the embodiment of the invention of Figure 4, the final outer coating 10 of Figure 3, limited to the temperature of 125 ° C, is therefore omitted, so as not to limit its resistance to high temperatures, which , especially in combination with silicone seals, can therefore reach the application limit temperature of 180 ° C of the special contact support inserts (connector inserts) for the high temperatures available in the known art .
    Several accelerated neutral salt spray corrosion tests carried out on various prototypes according to the UNI EN ISO 9227 standard have brought to light the increase of salt corrosion resistance according to the summary table of Table 1 reported below, compared to the ILME products. existing series W (housings for harsh environments) of the prior art.
    The plug-in connector housings of the present invention have shown an ability to resist corrosion, without the occurrence of any significant aesthetic defects, for up to six times that of the best available prior art products. today, the latter can withstand a 400-h corrosion test. The tests also revealed the essential character of the organic sealant coating 9 in combination with the electrolytic ceramic coating 8: if the latter triples the corrosion resistance with respect to the reference, the subsequent presence of the coating of organic sealant 9 leads to double this increase, which allows to obtain a resistance of up to 6 times that of the reference.
    Table 1 - Test Results in Cases of
    ILME connector
    Characteristics Series W Series W Series Series Series Series current evolution E (l) AND (1) Ξ (2) ET (2) without without with sealed sealing sealing (9) (9) (9) (9) with rev. t without rev.t with rev.t without final rev.t (10) final (10) final (10) final (10) Resistance -40 ° C / + -40 ° C / + -40 ° C / + -40 ° C / + -40 ° C / + -60 ° C / +
    thermal 125 ° C 125 ° C 125 ° C 180 ° C 125 ° C 180 ° C Resistance medium-medium-high high high high chemical high Resistance low medium high Medium-high medium-mechanical high high - blowing EN 60068-2- 68 - Gravel shock ISO 20567-1
    Spray reference 2x 3x 2x 6x 5x neutral salt reference reference reference reference reference
    UNI EN ISO 9227: 2012
    Of course, the invention is not limited to the particular embodiments previously described and shown in the accompanying drawings, but it may be subject to numerous modifications of detail within the reach of the skilled person, without departing of the scope of the invention defined by the appended claims.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    Plug-in connector housing consisting of two parts (1, 1 '), each comprising a respective metal sheath (2, 2'), preferably of aluminum alloy, suitable for housing at least one respective contact element (3, 3 ') connectable to a conductor of a cable, comprising at least one locking device (4) and at least one seal (6, 6') of an elastomeric material, said metal sheath (2, 2 ') comprising a corrosion and erosion resistant protective coating (7) at least along its outer surface, wherein said corrosion and erosion resistant protective coating (7) is formed at least one electrolytic ceramic coating (8), characterized in that said electrolytic ceramic coating (8) is covered with another coating of organic sealant (9), in that said coating of organic sealant (9) is covered with another outer finishing garment (10) and that said outer finish coating is of thermosetting resin.
    [2" id="c-fr-0002]
    Plug-in connector housing according to Claim 1, characterized in that the electrolytic ceramic coating (8) of the corrosion and erosion resistant protective coating (7) comprises a titanium (titanium oxide) ceramic.
    [3" id="c-fr-0003]
    Plug-in connector housing according to Claim 1 or 2, characterized in that the electrolytic ceramic coating (8) of the corrosion and erosion resistant protective coating (7) has a thickness of between 10 μπι and 12 μπι. .
    [4" id="c-fr-0004]
    Connector housing according to one of the preceding claims, characterized in that said organic sealant coating (9) is composed of an acrylic resin or an alkyd resin.
    [5" id="c-fr-0005]
    Connector housing according to one of the preceding claims, characterized in that said coating of organic sealant (9) has a thickness of between 500 nm and 1000 nm.
    [6" id="c-fr-0006]
    6. A connector housing according to any one of the preceding claims, characterized in that said outer finish coating (10) has a thickness between 60 πιμ and 120 μπι.
    [7" id="c-fr-0007]
    Connector housing according to claim 1, characterized in that the electrolytic ceramic coating (8) of the corrosion and erosion resistant protective coating (7) is applied using an Alodine® EC2 ™ process.
    [8" id="c-fr-0008]
    Connector housing according to claim 1, characterized in that said at least one seal (6, 6 ') is made from fluorinated elastomers, or from a silicone-based elastomer or an elastomer. nitrile rubber base (NBR) or hydrogenated nitrile rubber elastomer (HNBR).
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20170033497A1|2017-02-02|
    CN106450894A|2017-02-22|
    ITUB20152606A1|2017-01-29|
    DE102016213873A1|2017-02-02|
    FR3039714B1|2018-11-02|
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    DE102019205115B3|2019-04-10|2020-08-13|Icotek Project Gmbh & Co. Kg|Device for introducing cables through an opening|
    US11233363B2|2019-09-23|2022-01-25|Ford Global Technologies, Llc|Aluminum alloy header plate with ceramic coating for battery assembly|
    CN113300147A|2020-05-08|2021-08-24|六安微领时代工业智能科技有限公司|Heat dissipation locking cable joint that takes off|
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    DE102020118046A1|2020-07-08|2022-01-13|Fte Automotive Gmbh|Contact assembly for a solenoid valve and pump assembly with such a contact assembly|
    法律状态:
    2017-07-28| PLFP| Fee payment|Year of fee payment: 2 |
    2018-05-25| PLSC| Search report ready|Effective date: 20180525 |
    2018-07-26| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-26| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-28| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-26| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    ITUB2015A002606A|ITUB20152606A1|2015-07-29|2015-07-29|PROTECTED CONNECTOR HOUSING AGAINST CORROSION AND EROSION|
    IT102015000039924|2015-07-29|
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