• 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:
    The electrical connector (1) comprises a jaw (10) with two arms (11, 12) which define a receiving area of one of the connecting pieces (16) of a safety member (14), and which can be separated from each other by elastic deformation to a constrained state to ensure clamping. Each arm is electrically conductive comprises: - a support piece (20) made of a first conductive material; - A contact piece (30) in a second conductive material different from the first material and able to withstand the electrical and thermal stresses associated with the insertion of the safety member into the jaw, under load. The contact piece is distinct but integral with the support piece and comprises a permanent contact portion (31) and a transient contact portion (32) with the connecting piece (16), these portions being distinct.
    公开号:FR3036858A1
    申请号:FR1554938
    申请日:2015-06-01
    公开日:2016-12-02
    发明作者:Michael Jacquot
    申请人:Michaud SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an electrical connector and an electrical connection device comprising at least one such electrical connector. More specifically, the invention relates to an electrical connector for electrically connecting an electrical conductor and a fuse type safety device. In particular, the invention applies to the case of knife fuses, but it also finds its application with cylindrical fuses, and for neutral disconnecting bars. The connector can be of the type cage terminal, terminal, crimping, etc.
    [0002] The safety member typically comprises firstly a block containing a fuse element and secondly two connecting pieces, and is part of a range of safety members whose connection pieces have variable transverse dimensions. Conventionally, such an electrical connector comprises a jaw having two arms, at least one of which is electrically conductive, which define a receiving zone of a connection piece of the safety member. When the jaw does not receive a safety member, the two arms are in a state of rest, that is to say they are not solicited. In addition, the two arms can be separated from each other by elastic deformation of at least one of the arms, to a constrained state, in which they can apply a clamping force on the connecting piece in order to guarantee a good electrical contact. This clamping force is obtained by the elasticity and the geometry of the jaw, and possibly by additional spring means. The insertion / removal phase of the security organ in! out of the jaw is critical when it is "charging", that is when downstream devices are connected, so when current flows. Indeed, there is then a current call as soon as the connection piece of the safety member comes to touch the jaw. This current density concentrated at a point, since the connection piece is not yet fully inserted into the jaw, is very aggressive (electric arc, spark, hot spot, tearing of molten material) and can cause a harmful degradation of the zone of contact of the jaw if the material of this zone is not adapted. To limit the negative impact of this spark on the quality of the contact, it is known to make the arms of the jaw in a material having both very good properties of electrical conductivity and a fairly high melting point 3036858 2 ( so that the heat of the spark does not cause the localized fusion of the jaw, which would greatly degrade the quality of the electrical contact). Such a material may conventionally be a "noble" metallic material, and in particular copper generally coated with silver or tin to improve its characteristics, including corrosion resistance. In order to limit the cost of the jaw, it is known to provide a coating located only in the contact zone between the connecting piece and the jaw at the time of insertion or removal of the safety member. Despite this trick, the jaw remains very expensive. Indeed, it is a generally long piece, for obtaining a sufficient lever arm and elasticity, which moreover is integrally made of copper, insofar as the other materials are not do not money or more difficult. The present invention aims to overcome the disadvantages mentioned above.
    [0003] To this end, the invention relates to an electrical connector for receiving a fuse type safety device which comprises a block and two connecting pieces, the electrical connector comprising a jaw comprising two arms defining a receiving zone of one connecting parts of the safety member, the jaw being configured so that the two arms, from a state of rest, can be separated from each other by elastic deformation of at least one of arm, to a constrained state, at least one of the arms being electrically conductive. According to a general definition of the invention, the or each electrically conductive arm comprises: a support piece made of a first electrically conductive material; a contact piece made of a second electrically conductive material which is different from the first material and which is capable of withstanding the electrical and thermal stresses associated with the insertion / removal of the safety member in / out of the jaw , in charge, the contact piece being distinct from the support piece and secured thereto by mechanical assembly means, the contact piece comprising: a portion of permanent contact with the connecting piece of the body safety, in the position of use; and a transient contact portion with the connection piece of the safety member, during the insertion / removal of the safety member in / out of the jaw, the transient contact portion being distinct from the permanent contact portion. Thus, by providing for the mechanical assembly of two separate parts, the invention overcomes the problems associated with the need to apply a coating, and thus makes it possible to limit the use of a so-called "noble" material to the support piece. The contact piece can have reduced dimensions, just necessary for its contact function, the mechanical strength being imparted by the support piece, which can be thicker, in particular. If the second material must be able to withstand the above-mentioned high stresses (and therefore possess high electrical conductivity and melting point), on the other hand the first material may have much lower electrical and thermal conductivity. Since the cost of this second material is lower than the first, the cost of the jaw is considerably reduced. In practice, the support piece is attached to the contact piece and secured to it, preferably captively, while ensuring electrical contact between these two parts. In addition, the fact of dissociating the permanent contact portion and the transient contact portion makes it possible to guarantee over time the very good quality of the electrical contact, since the potentially degraded zone - namely the transient contact portion - is a non-contact zone. used in steady state. Specifically, at least a portion of the permanent contact portion is not part of the transient contact portion and thus remains preserved. It should be noted that, if the permanent contact portion and the transient contact portion are distinct, they may nevertheless, in one possible embodiment, be integral and carried by the same piece.
    [0004] Furthermore, the connection piece of the safety member may also have a separate permanent contact zone and a transient contact zone. Concretely, the first electrically conductive material may comprise aluminum or be made of aluminum.
    [0005] As for the second electrically conductive material, it may comprise a cuprous material or be made of a cuprous material. In addition, it may have, at least in the transient contact portion, a coating of silver or tin. In one possible embodiment, the two arms of the jaw are electrically conductive and each comprise a support piece and a contact piece. The contact pieces can form a single piece, for example in the form of a stirrup. Alternatively, the contact parts may be separate parts. As for the support pieces, they can form a single piece, for example in the form of stirrup, or be separate parts. The permanent contact portion may have an inner surface - that is, an inwardly facing surface of the jaw - which is generally planar and which represents at least 30%, preferably at least 50%, of the surface total interior of the contact piece. In other words, the permanent contact portion is sufficiently large to ensure satisfactory contact with the connection piece of the safety member. For example, the inner surface of the permanent contact portion may represent at least 50%, preferably at least 60% of the lateral surface of the connecting piece with which it is intended to come into contact in the position of use, that is to say in steady state. According to one possible embodiment, the transient contact portion is shifted along the main direction of the arms, in the direction from the base of the arms towards their free end, with respect to the permanent contact portion. In addition, the transient contact portion is shifted inwardly of the jaw relative to the position occupied by the permanent contact portion when the jaw receives the connecting piece. In other words, the transverse dimension of the jaw at the transient contact portion is smaller than the transverse dimension of the connecting piece of the safety member. Thus, the transient contact portion is the first portion touched by the connecting piece during insertion of the safety member into the jaw, and the last touched during removal. It is therefore well in this area that localized constraints are likely to degrade the contact area.
    [0006] It may be provided that the transient contact portion of an arm is inclined relative to the median plane of said arm, towards the outside of the jaw, along the main direction of the arms, in the direction from the base arms towards their free end. The jaw thus has in the vicinity of its opening a convergent shape for guiding the insertion of the connection piece and promoting the fact that the first contact is made at the transient contact portion. According to one embodiment, the contact piece of an arm is substantially fixed with respect to the support piece of said arm, at least the transient contact portion of said contact piece being configured to be elastically deformed during the first phase. insertion / removal of the safety organ into / out of the jaw.
    [0007] Alternatively or additionally, according to one embodiment, the transient contact portion of the contact piece of an arm is located on a movable portion relative to the support member of said arm, said movable part of the workpiece. wherein said contact portion is configured to be brought closer to said arm from a rest state, wherein said movable portion projects inwardly of the jaw relative to the permanent contact portion, to a constrained state in which said movable portion exerts an elastic restoring force towards the state of rest. There is thus a displacement in addition to a possible deformation. According to this embodiment, the contact piece may comprise a fixed main part with respect to the supporting part of said arm and the movable part may comprise a blade having a base articulated to the main part and a free end part on which is arranged the transient contact portion. The transient contact portion is for example arranged on a boss protruding inwardly of the jaw, said boss being configured to be slightly flattened by elastic deformation during the insertion / removal of the safety member in / out of the jaw. According to one possible embodiment, the mechanical assembly means are provided on the support piece and / or on the contact piece. The assembly can be obtained by interlocking, clipping, clinching, crimping. It can in particular be a mutual latching (for example by the cooperation of a projection and a cavity, or by the hooking of a hook of a piece on a rim of the other piece, etc.). Alternatively, the contact piece and the support piece can be assembled via a member belonging neither to the support piece nor to the contact piece (for example a screw), or to be welded to one another .
    [0008] The electrical connector may further comprise a housing for receiving an electrical conductor, and electrical connection means between the electrically conducting arm (s) and the electrical conductor when present in the housing, in order to to electrically connect the electrical conductor and the safety member.
    [0009] Typically, the electrical connector may comprise a body in which the housing is formed, said body being made of an electrically conductive material forming part of the electrical connection means, the or at least one of the electrically conductive material arms being made in one piece with the body or attached to the body by means of an electrically conductive fastener 35.
    [0010] According to a second aspect, the invention relates to an electrical connection device comprising at least one electrical connector as described above, and a safety member, for example a knife fuse. Several possible embodiments of the invention are now described, by way of nonlimiting examples, with reference to the appended figures: FIG. 1 is a perspective view of an electrical connector according to a first embodiment of FIG. the invention, comprising a jaw comprising two arms, each arm comprising a support piece and a contact piece; Figure 2 is a perspective view of a safety member mountable on such an electrical connector; Figures 3 and 4 are schematic views, in a longitudinal direction, of two different embodiments of the jaw; Figure 5 is a simplified view, in the longitudinal direction, of the safety member of which one of the connecting pieces is inserted into the jaw, in the use position; Figure 6 is a perspective view similar to Figure 5, only the contact piece being shown; Figure 7 is a view similar to Figure 5, more complete and in perspective; FIG. 8 is a schematic view of the contact piece belonging to the jaw and of a connection piece of the safety member, before insertion, during insertion, and fully inserted in the use position. ; Figure 9 is a diagrammatic representation, in perspective, of a second embodiment of a jaw of an electrical connector according to the invention; Figure 10 is a schematic view of the contact piece belonging to the jaw of Figure 9 and a connection piece of the safety member, being inserted, and fully inserted in the use position; Figures 11 and 12 are views similar to Figures 9 and 10 for a third embodiment; Figures 13 and 14 are views similar to Figures 9 and 10, for a fourth embodiment. An electrical connector 1 according to the invention is illustrated schematically in FIG.
    [0011] The electrical connector 1 generally comprises a body 2 which is made of an electrically conductive material, for example aluminum, and which may advantageously be manufactured by extrusion. The body 2 comprises a housing 3 for receiving an electrical conductor 5 (not shown) which may typically comprise an electrically conductive core in an insulating sheath. The housing 3 has an axis 4 defining the longitudinal direction X. The housing 3 may comprise teeth 5 projecting towards the inside of the housing 3 and able to pierce the sheath of the conductor for establishing an electrical contact with the housing. driver's soul. Alternatively, the housing 3 may be devoid of such teeth, the portion of the conductor located in the housing 3 is then stripped. In either case, the electrical contact with the conductor core is obtained via a conductive screw (not shown) inserted into a threaded orifice 6 of the body 2 and tightening the conductor against the opposite wall of the housing 3. The connector 1 also comprises a jaw 10 comprising a first arm 11 and a second arm 12 defining between them a receiving zone 13 for a connecting part of a safety member 14. The term "inside" refers to two elements located between the two arms 11, 12, as opposed to the term "outside". The transverse direction Y is defined as the direction orthogonal to the longitudinal direction X, from one arm 11 to the other 12. The direction Z is defined as the direction orthogonal to the X and Y directions (see FIG. 1). The arms 11, 12 of the jaw 10 extend substantially in a plane (X, Z); the main direction of the arms 11, 12 corresponds to the direction (Z).
    [0012] The safety member 14 may typically be a fuse, and especially a knife fuse, as shown in FIG. 2. However, other types of fuses may be used with a connector according to the invention. Such a safety member 14 comprises a block 15 enclosing an element able to melt beyond a certain current, and two connecting pieces 16. In the case of a knife fuse, the block 15 may be substantially parallelepipedic and the knives 16 in the form of flat bars. These bars extend substantially in the longitudinal direction X when the safety member 14 is mounted on the connector 1, one of the connecting pieces 16 being located in the receiving zone 13 between the jaws 10. In the case of a cylindrical fuse, the block 15 is substantially cylindrical and the connecting pieces 16 form end caps covering the block 15 at each of its ends.
    [0013] In practice, the connector 1 is intended to receive a safety member 14 selected from a range of safety members whose connection pieces 16 have transverse dimensions between a minimum dimension and a maximum dimension. In the case of a knife fuse, the transverse dimension is the width I of a connecting piece 16, as illustrated in FIG. 2. At least one of the arms of the jaw 10 is electrically conductive. In the illustrated embodiment, which will be described below, each of the two arms 11, 12 is electrically conductive.
    [0014] In addition, the jaw 10 is configured so that the two arms 11, 12, from a state of rest, can be separated from each other by elastic deformation of at least one of the arms 11, 12 , to a constrained state. In the embodiment shown, the two arms 11, 12 are elastically deformable. The unconstrained state, or rest position, corresponds to a state in which the arms 11, 12, not being stressed, are not elastically deformed. In the unconstrained state, the arms 11, 12 are spaced from each other, in the transverse direction Y, a distance d slightly less than the minimum dimension of the connecting pieces 16 of the range. When inserting a connecting piece 16 into the receiving zone 13 of the jaw 10, the arms 11, 12 move away from each other - in the Y direction - by elastic deformation, towards the a constrained state in which they exert an elastic restoring force towards each other. This is concretely obtained by the geometry and the constituent material of the arms 11, 12. Thus, the two arms 11, 12 can grip, by said elastic return force, the connecting piece 16 of any safety member 14 belonging to the range, and thus guarantee a good electrical contact. Each of the electrically conductive arms 11, 12 comprises two parts which are distinct from each other and which are secured by means of mechanical assembly, for example but not exclusively by mutual snapping. The assembly can be irreversible.
    [0015] Each arm 11, 12 comprises on the one hand a support piece 20 made of a first electrically conductive material. The function of the support piece 20 is to ensure the holding of the jaw 10, and not to be in direct contact with the safety member 14, while participating in the electrical connection with the conductor inserted in the housing 3 Therefore, if the support piece 20 is to be made of a conductive material, the electrical conductivity and thermal conductivity of this material need not be very high. Thus, in practice, the support piece 20 can be made of aluminum. Each of the arms 11, 12 further comprises a contact piece 30 made of a second electrically conductive material. The function of the contact piece 30 is to be in direct contact with the safety member 14, in use, but also during the transient phases, that is to say during the insertion / removal of the safety member 14 in / out of the jaw 10. The second material must be able to withstand the electrical and thermal stresses during these transient phases, under load. The second material must therefore have a high electrical conductivity and a high melting point. In addition, the second material should preferably easily accept a surface treatment (anticorrosion for example). Thus, in practice, the second material is different from the first material, because it would be useless and too expensive to make the support piece 20 - which does not come into direct contact with the safety member 14 - in such a second material said "noble". In addition, the contact piece 30 comprises: a permanent contact portion 31 with the connection piece 16 of the safety member 14, in the position of use; and a transient contact portion 32 with the connecting piece 16 of the safety member 14, during insertion / removal of the safety member 14 into / out of the jaw 10, the contact portion transient 32 being distinct from the permanent contact portion 31. Concretely, the contact piece 30 may be made of a copper material having, at least in the transient contact portion 32, a coating of silver or tin . By providing on the arms 11, 12 of the jaw 10 a zone dedicated to the transient contact, namely the transient contact portion 32, it is ensured that the strong stresses occurring in the transient phase do not damage the permanent contact portion 31 This guarantees the good quality of the electrical contact over time. In addition, to ensure that the transient contact portion 32 is indeed the area in which these high stresses are located, it must be ensured that the transient contact portion 32 is the first portion touched by the connecting piece 16 during insertion. the safety member 14 in the jaw 14, and the last touched 35 during the withdrawal. For this purpose, it can be provided that the transient contact portion 32 - 3036858 10 - is offset in Z with respect to the permanent contact portion 31, towards the opening of the jaw 10; - and is shifted inwardly of the jaw 10 relative to the position occupied by the permanent contact portion 31 when the jaw 10 5 receives the connection piece 16. It can further be provided that the transient contact portion 32 is inclined to form a kind of guide surface converging towards the inside of the jaw 10. In the embodiment shown in the figures, the support pieces 20 of the arms 11, 12 form a single piece (for example in a stirrup, FIG. ) or two parts (Figure 3) which are separate from the body 2 of the electrical connector 1 and fixed on the body 2 by means of at least one electrically conductive fastening member such as one or more screws 17. In this way, thanks at the connector 1, there is an electrical connection between the electrical conductor and the safety member 14, via the core, the teeth 5 when present, the body 2, the support piece or parts 20 of the arm 11, 12- and if necessary the fixing member 17- and the connecting piece 16. According to a variant not shown, at least one support piece 20 of at least one of the arms 11, 12 could be made in one piece with the body 2. The jaw 10 may further comprise an elastic member such as a ring 8 tending to bring the two arms 11, 12 closer together to ensure proper tightening of the connecting piece 16 of the the safety member 14. Furthermore, as seen in Figure 7, the connector 1 may comprise an insulating part 9, for example plastic, which covers the initial contact area, to avoid any chance contact of the finger with a portion under tension and to facilitate insertion of the safety member 14. Referring to Figures 1 and 3 to 8 which illustrate a first embodiment of the invention. The contact piece 30 of an arm 11, 12 comprises hooking means 33 intended to cooperate with complementary fastening means 23 formed on the support piece 20 of the arm 11, 12. Thus, the contact piece 30 may comprise tabs 33a which hang on the rim 23a of the support piece 20, lugs 33b protruding outwardly housed in orifices 23b of the support piece 20, lugs 33c protruding towards the interior being housed in orifices 23c of the support piece 20, and / or a return 33d cooperating with the outer face 23d of the support piece 20 so that the contact piece 30 capping a part of the support piece 20. Other mechanical assembly means can be envisaged. The contact piece 30 comprises a main portion 34 located inside the jaw 10, substantially against the support member 20 of the arm 11, corresponding 12, and which is here substantially rectangular and flat. The inner face of the main part 34 forms the permanent contact portion 31, as illustrated schematically in FIGS. 3 and 4. In the embodiment of FIG. 3, the main portions 34 of the contact pieces 30 of the two arms 11, 12 are connected by a base 35 in U: the contact parts 30 of the two arms 11, 12 thus form a single piece, stirrup-shaped. In the variant illustrated in Figure 4, the contact parts 30 of the two arms 11, 12 are separate parts, each fixed to the support part 20 of the arm 11, 12 corresponding. The contact piece 30 also includes an appendix 36 extending the main portion 34 beyond the opening of the jaw 10. The appendix 36 here comprises an inwardly-facing boss 37, part of the inner face of which - turned away from the jaw 10 - forms the transient contact portion 32, as illustrated schematically in Figures 3 and 4. Holes may be formed in the appendix 36 to form mechanical fastening means 20 of the insulating part 9. We now describe the various steps of the insertion of a connection piece 16 of a safety member 14 in the jaw 10, as shown schematically in Figure 8. It is specified that the withdrawal of the connection piece 16 follows the same steps, in reverse.
    [0016] The first contact between the connecting piece 16 and the jaw 10 is in the transient contact portion 32, due to the presence of the bosses 37 facing the inside of the jaw 10 (the connecting piece then being in the position shown in dotted lines). Then the operator continues to insert the safety member 14, until the connecting piece 16 is located between the 31 permanent contact portions 31 (the connecting piece then being in the position shown in bold lines). During this continuation of the insertion movement, it may occur a slight elastic flattening of the bosses 37 and / or a mutual spacing of the appendices 36 and / or a mutual spacing of the arms 11, 12, to allow the passage of the piece of connection 16. Once the safety member 14 in the use position, the arms 11, 12 come closer to each other by elastic return to ensure the tightening of the connecting piece 16 and therefore the electrical contact .
    [0017] Thus, the invention provides that each of the arms 11, 12 - and more precisely the contact piece 30 - comprises two distinct parts, namely: a part dedicated to the initial contact with the connecting piece 16 of the body security 14: the transient contact portion 32; 5 - and a part dedicated to normal operation: the permanent contact portion 31. These parts being distinct, the permanent contact portion 31 is preserved from the damage related to the connection under charge, which guarantees the preservation of the quality of the electrical contact in time.
    [0018] Referring to Figures 9 and 10 which illustrate a second embodiment of the invention. The contact piece 30 comprises a main portion 34 fixed substantially against the inner face of the corresponding support piece 20, inside the jaw 10. The main part 34 is here substantially rectangular and plane. The inner face of the main part 34 at least partly forms the permanent contact portion 31, as illustrated schematically in Figure 10. In the embodiment shown, the contact parts 30 of the two arms 11, 12 are separate parts. By way of example, the mechanical assembly means of the contact piece 30 to the corresponding support piece 20 comprise a downwardly-opening longitudinal groove 23e formed in the support piece 20, on the opening side. of the jaw 10, receiving a longitudinal rib 33e formed on the main portion 34 of the contact piece 30. The contact piece 30 further comprises a movable portion relative to the main portion 34. In the embodiment shown, the part mobile comprises a blade 38 which has a base articulated to the main portion 34, about a substantially longitudinal axis, and a free end portion on the inner side of which is formed the transient contact portion 32, as shown schematically in the figure 10.
    [0019] At rest (position shown in dashed lines in FIG. 10), the blade 38 projects inwards from the jaw 10 with respect to the main portion 34, that is to say with respect to the permanent contact portion 31. In addition, the free end portion of the blade 38 forms an inner face inclined inwardly of the jaw 10 towards the base of the blade 38. This serves to guide the insertion of the connecting piece 16 of the safety member 14 and to ensure that the zone that comes first in contact with the connecting piece 16 is the transient contact portion 32, located on the free end portion of the blade 38. When the insertion of the connecting piece 16 continues, the blade 38 is pushed by the connecting piece 16 and pivots around its base relative to the main portion 34, to approach said main portion 34, by elastic deformation. The support member 20 of at least one of the arms 11, 12 may also be elastically deformed to allow passage of the connecting piece 16. In the use position (position shown in solid lines in FIG. 10 ), the blade 38 is in a constrained state in which it exerts an elastic restoring force towards the rest state. The connecting piece 16 is then in contact with the permanent contact portion 31 located on the main portion 34 of the contact piece 30, and on the blade 38, outside the free end portion. However, for reasons of readability of the drawing, a slight space has been shown in FIG. 10 between the connecting piece 16 and each of the permanent contact portions 31. Here again, the permanent contact portion and the transient contact portion are distinct. Referring to Figures 11 and 12 which illustrate a third embodiment of the invention.
    [0020] This third embodiment is similar in geometry and operation to the second embodiment, with the exception of the main differences listed below. The contact piece 30 is assembled to the support piece by cooperation of complementary mechanical fastening means 23, 33 which are situated on the side of the base of the arms 11, 12, that is to say opposite to the the opening of the jaw 10. The main part 34 of the contact piece 30 is curved towards the inside of the jaw 10, at rest, as illustrated in FIG. 11. In addition, the main part 34 is formed of lamellae Adjacent flats 40 extending generally in the Z direction. This configuration allows the main portion 34 to be elastically deformed to a constrained state in which it adopts a flatter shape (see FIG. 12). In addition, at least one of the contact pieces 30 has a return 41 extending generally in a plane (X, Y) opposite the opening of the jaw 10. This return 41 can form a stop limiting insertion of the connecting piece 16 into the jaw 10.
    [0021] When the connecting piece 16 is inserted into the jaw 10, it firstly comes into contact only with the transient contact portion 32 located on the free end portion of the blade 38, this free end portion being projecting towards the inside of the jaw 10 and inclined as described above. This is shown in dashed lines in FIG. 12. In the use position, that is to say when the connecting piece 16 is totally inserted in the jaw 10, the contact pieces 30 are in a constrained state, where they have moved away from each other with respect to the rest position and where they are less bulging. The connecting piece 16 is in contact only with the permanent contact portion 31 located on the main part 34 of the contact piece 30, and on the blade 38, outside the free end portion. This is shown in solid lines in FIG. 12. Finally, reference is made to FIGS. 13 and 14 which illustrate a third embodiment of the invention.
    [0022] In the embodiment shown, the contact parts 30 of the two arms 11, 12 are separate parts. In addition, each contact piece 30 is substantially fixed with respect to the corresponding support piece 20. The contact piece 30 comprises a main part 34 fixed substantially against the inner face of the corresponding support piece 20, inside the jaw 10. The main part 34 is here substantially rectangular and flat. The inner face of the main portion 34 forms the permanent contact portion 31, as schematically illustrated in Figure 14. The contact piece 30 further comprises a boss 37 which is shifted towards the opening of the jaw 10 relative to the main portion 34 and which faces inwardly of the jaw 10. A portion of the inner face of the boss 37 - facing away from the jaw 10 - forms the transient contact portion 32, as schematically illustrated in FIG. FIG. 14. By way of example, the mechanical assembly means of the contact piece 30 to the corresponding support part 20 comprise: on the one hand pins 33b formed on the main part 34 of the contact piece 20 protruding outwardly and being housed in orifices 23b of the support piece 20; and on the other hand tabs 33a forming hooks, located at the free end portion of the contact piece 30 and hooking on the flange 23a of the support piece 20.
    [0023] The first contact between the connecting piece 16 and the jaw 10 is in the transient contact portion 32, due to the presence of the bosses 37 facing the inside of the jaw 10. This is illustrated in dotted lines in Figure 14. Then the operator continues to insert the safety member 14, until the connecting piece 16 is located between the permanent contact portions 31, as shown in solid lines in Figure 14. L insertion of the connection piece 16 5 to the position of use, that is to say in steady state, can cause a slight elastic flattening of the bosses 37 and / or a mutual spacing of the arms 11, 12 to a constrained state. Once the safety member 14 in the use position, the arms 11, 12 come closer to each other by elastic return to ensure the clamping of the connecting piece 16 and therefore the electrical contact. For reasons of readability of the drawing, a slight gap has been shown in FIG. 14 between the connecting piece 16 and each of the permanent contact portions 31, although the connecting piece 16 and each of the permanent contact portions 31 are actually in touch. It goes without saying that the invention is not limited to the embodiments described above as examples but that it includes all the technical equivalents and variants of the means described as well as their combinations.
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. Electrical connector for receiving a fuse-type safety member (14) which comprises a block (15) and two connecting pieces (16), the electrical connector (1) comprising a jaw (10) having two arms (11, 12) defining a receiving zone (13) of one of the connecting pieces (16) of the safety member (14), the jaw (10) being configured so that the two arms (11, 12), from a state of rest, can be separated from each other by elastic deformation of at least one of the arms (11, 12), to a constrained state, at least one of the arms (11, 12) being electrically conductive, characterized in that the or each electrically conductive arm (11, 12) comprises: - a support piece (20) made of a first electrically conductive material; a contact piece (30) made of a second electrically conductive material which is different from the first material and which is capable of withstanding the electrical and thermal stresses associated with the insertion / removal of the safety member (14) in / out of the jaw (10), under load, the contact piece (30) being distinct from the support piece (20) and secured thereto by mechanical assembly means (23, 33), the contact piece (30) comprising: - a permanent contact portion (31) with the connecting piece (16) of the safety member (14), in the position of use; and a transient contact portion (32) with the connecting piece (16) of the safety member (14), upon insertion / removal of the safety member (14) into / out of the jaw (10), the transient contact portion (32) being distinct from the permanent contact portion (31).
    [0002]
    2. Electrical connector according to claim 1, characterized in that the first electrically conductive material comprises aluminum.
    [0003]
    Electrical connector according to claim 1, characterized in that the second electrically conductive material comprises a copper material preferably having, at least in the transient contact portion (32), a coating of silver or tin. 3036858 17
    [0004]
    4. Electrical connector according to one of claims 1 to 3, characterized in that the two arms (11, 12) of the jaw (10) are electrically conductive and each comprise a support piece (20) and a contact piece (30), the contact pieces (30) forming a single piece.
    [0005]
    5. Electrical connector according to one of claims 1 to 4, characterized in that the permanent contact portion (31) has an inner surface which is generally flat and which represents at least 30%, preferably at least 50%, of the total interior surface of the contact piece (30).
    [0006]
    6. Electrical connector according to one of claims 1 to 5, characterized in that the transient contact portion (32): - is shifted along the main direction of the arms (11, 12), in the direction from the base of the arms (11, 12) towards their free end relative to the permanent contact portion (31); - and is shifted inwardly of the jaw (10) relative to the position occupied by the permanent contact portion (31) when the jaw (10) receives the connecting piece (16). 20
    [0007]
    7. Electrical connector according to one of claims 1 to 6, characterized in that the transient contact portion (32) of an arm (11, 12) is inclined relative to the mean plane of said arm (11, 12), in the direction of the outside of the jaw (10), along the main direction of the arms (11, 12), in the direction from the base of the arms (11, 12) towards their free end. 25
    [0008]
    8. Electrical connector according to one of claims 1 to 7, characterized in that the contact piece (30) of an arm (11, 12) is substantially fixed relative to the support piece (20) of said arm ( 11, 12), at least the transient contact portion (32) of said contact piece (30) being configured to be elastically deformable upon insertion / removal of the security member (14) into out of the jaw (10).
    [0009]
    9. Electrical connector according to one of claims 1 to 8, characterized in that the transient contact portion (32) of the contact piece (30) 35 of an arm (11, 12) is located on a moving part (38) relative to the support member (20) of said arm (11, 12), said movable portion of the contact piece (30) being configured to be brought closer to said arm (11, 12) from a state resting, wherein said movable portion (38) projects inwardly from the jaw (10) relative to the permanent contact portion (31) to a constrained state in which said movable portion (38) exerts a force elastic return to the state of rest. 5
    [0010]
    Electrical connector according to claim 9, characterized in that the contact piece (30) has a main part (34) fixed with respect to the support piece (20) of said arm (11, 12) and that the mobile part comprises a blade (38) having a base articulated to the main part (34) and a free end portion 10 on which is formed the transient contact portion (32).
    [0011]
    11. Electrical connector according to one of claims 1 to 10, characterized in that the transient contact portion (32) is formed on a boss (37) projecting towards the inside of the jaw (10), said boss ( 37) being configured to be slightly flattened by elastic deformation upon insertion / removal of the safety member (14) into / out of the jaw (10).
    [0012]
    12. Electrical connector according to one of claims 1 to 11, characterized in that the mechanical assembly means (23, 33) are formed on the support piece (20) and / or on the contact piece (30). ).
    [0013]
    13. Electrical connector according to one of claims 1 to 12, characterized in that it further comprises a housing (3) for receiving an electrical conductor, and electrical connection means between the arm or arms (11, 12). ) 25 electrically conductive (s) and the electrical conductor when present in the housing (3).
    [0014]
    14. Electrical connection device, characterized in that it comprises at least one electrical connector (1) according to one of claims 1 to 13 30 and a safety member (14).
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    同族专利:
    公开号 | 公开日
    FR3036858B1|2017-05-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6790101B1|2003-07-15|2004-09-14|Molex Incorporated|Female terminal with sacrificial arc discharge contacts|
    US8702455B1|2010-02-10|2014-04-22|The Durham Company|Connector assemblies and blade contact structures therefor|
    US8613626B1|2012-06-21|2013-12-24|International Business Machines Corporation|Dual level contact design for an interconnect system in power applications|
    FR3012254A1|2013-10-23|2015-04-24|Schneider Electric Ind Sas|ELASTIC PINCHING JIG OF A KNIFE, FUSE HOLDER AND METHOD FOR ASSEMBLING AN ELASTIC JAW|CN108282407A|2018-01-26|2018-07-13|罗志江|A kind of novel radio router device|
    FR3101193A1|2019-09-24|2021-03-26|Mersen France Sb Sas|Fuse electrical switch-off device|
    FR3101192A1|2019-09-24|2021-03-26|Mersen France Sb Sas|Fuse electrical switch-off device|
    法律状态:
    2016-04-07| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-02| PLSC| Search report ready|Effective date: 20161202 |
    2017-04-13| PLFP| Fee payment|Year of fee payment: 3 |
    2018-04-12| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-11| PLFP| Fee payment|Year of fee payment: 6 |
    2021-04-16| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554938A|FR3036858B1|2015-06-01|2015-06-01|ELECTRICAL CONNECTOR AND ELECTRICAL CONNECTION DEVICE|FR1554938A| FR3036858B1|2015-06-01|2015-06-01|ELECTRICAL CONNECTOR AND ELECTRICAL CONNECTION DEVICE|
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