EP0180008B1 - Elément fusible - Google Patents

Elément fusible Download PDF

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Publication number
EP0180008B1
EP0180008B1 EP85111250A EP85111250A EP0180008B1 EP 0180008 B1 EP0180008 B1 EP 0180008B1 EP 85111250 A EP85111250 A EP 85111250A EP 85111250 A EP85111250 A EP 85111250A EP 0180008 B1 EP0180008 B1 EP 0180008B1
Authority
EP
European Patent Office
Prior art keywords
extension
fuse element
casing
fuse
longitudinal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85111250A
Other languages
German (de)
English (en)
Other versions
EP0180008A3 (en
EP0180008A2 (fr
Inventor
Lothar Dipl.-Ing. Wettengel
Detlev Miksche
Gerhard Schrickel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
R Stahl Schaltgeraete GmbH
Original Assignee
R Stahl Schaltgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by R Stahl Schaltgeraete GmbH filed Critical R Stahl Schaltgeraete GmbH
Priority to AT85111250T priority Critical patent/ATE58981T1/de
Publication of EP0180008A2 publication Critical patent/EP0180008A2/fr
Publication of EP0180008A3 publication Critical patent/EP0180008A3/de
Application granted granted Critical
Publication of EP0180008B1 publication Critical patent/EP0180008B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/542—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers the intermediate or auxiliary part being provided with bayonet-type locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/24—Means for preventing insertion of incorrect fuse

Definitions

  • the invention is based on a securing element according to the preamble of claim 1 or claim 2. Furthermore, the invention relates to a version according to the preamble of claim 22.
  • the known base contains in a housing a pivotable fuse carrier about its transverse axis, which can be moved back and forth between two end positions.
  • Two flanges are formed on the front of the fuse carrier, which is non-detachably connected to the housing, and cover the cavity to the outside in each position of the fuse carrier, in which the fuse carrier can be moved.
  • the fuse holder contains a continuous opening in its longitudinal direction, into which a holder designed in the manner of a drawer for a fuse link can be inserted.
  • the fuse link lies in a pocket of the holder, so that the metallic end caps of the fuse link are accessible from the outside; the drawer-like holder does not itself carry any electrical contact means.
  • the size of the pocket in the holder is adapted to the size of the approximately cylindrical fuse link to be used, the size of which in turn depends on the electrical characteristics.
  • the opening in the fuse carrier is profiled in cross section and the fuse holder has a cross-sectional shape adapted to this cross section.
  • a miniature fuse is known from DE-U-84 11 568, the melting insert of which is arranged in a double-shell, longitudinally divided cylindrical housing. With the fuse pins are mechanically and electrically conductively connected available through openings in the region 'of the parting line between the housing shells radially outward.
  • the contact pins are adapted to the holes in the printed circuit boards, a misassembly of the printed circuit board being avoided by varying the spacing of the contact pins. It is then only possible to insert miniature fuses into the circuit board in which the distance between the contact pins corresponds to the distance between the soldering eyes in the circuit board.
  • the object of the invention is to provide a security element that allows a large number of coding possibilities even with a miniaturized design. Furthermore, the object of the invention is to provide a version which makes it unacceptable to bridge the contacts provided for the securing element.
  • the securing element according to the invention is characterized by the features of the main claim, while the version suitable for this is characterized by the features of claim 22.
  • an extension projecting laterally or radially with respect to the longitudinal axis of the housing is used as a coding device for the securing element, a large number of possible codings is given, since the extension can be changed greatly in its outer shape even with a small design and sufficient strength. The extension can nevertheless be robust enough to prevent violent insertion of a securing element with a high electrical load capacity.
  • the suitable extension can be selected be provided rigidly or movably on the housing.
  • an inadmissible restoration or bridging of the fuse will be effectively prevented if the extension carries at least one of the two contacts, because corresponding lateral contacts are then required in the chamber of the fuse holder. It is particularly advantageous if the contact is in the extension and, coming from the interior of the housing, protrudes laterally or radially from the extension with respect to the longitudinal axis of the housing, so that the mating contact can be arranged in a concealed manner in the socket.
  • a very robust extension on the one hand and a further complication of inadmissible manipulations on the securing element with regard to the coding results in an extension which extends over the entire length of the housing and contains both contacts which are measured at a distance from one another in the longitudinal direction of the extension.
  • the coding device has a second rigid extension which, like the first extension, laterally or radially with respect to the longitudinal axis protrudes from the housing and forms an angle other than 0 degrees with the first extension, measured in a plane perpendicular to the longitudinal axis of the housing, the load capacity and / or the angle of the two extensions and / or the shape of the second extension or the triggering characteristic of the fuse device is encrypted.
  • recesses can be provided in the first and / or the second extension, in the axial position of the shape, depth and / or length the electrical load capacity and / or tripping characteristic is encoded .
  • a further measure in order to obtain the coding or to expand the coding variety without having to provide a separate housing for each type of security is to use a base body for the housing on which a carrier rotatably held with respect to the longitudinal axis of the base body sits on which the at least one extension is formed, which belongs to the coding device.
  • the electrical triggering characteristic of the fuse device is encrypted in the form of this first extension. It is particularly space-saving here if the coding is carried out by an extension which, measured in a plane perpendicular to the longitudinal axis of the housing, extends over a different circumferential area, while the radial dimensions of the extension are constant.
  • this carrier is arranged on one of the two front ends of the basic housing body, it can simultaneously serve to completely close the opening of the socket, for example if the securing element is rotated about its longitudinal axis in the socket for the purpose of contacting the contacts.
  • a universal version which is adapted to the current carrying capacity by simple means, can be achieved if, seen in the longitudinal direction of the housing base body, a second extension, covering the first extension, between the first extension and the end face of the carrier facing away from the base body is provided, the extent of which in the circumferential direction is equal to the maximum extent in the circumferential direction of the first extension.
  • This ensures that regardless of the coded electrical value, the opening of the socket is always closed smoothly without the edge of the opening having to be adapted to the individual electrical values.
  • the coding of the socket can be formed with the aid of a coding plate which is arranged below the outer edge of the insertion opening and which is preferably made of metal.
  • an extension extending in its longitudinal direction can also be provided on the housing base body, which extension can also be used for coding, but does not have to.
  • the contacts which protrude laterally or radially with respect to the longitudinal axis of the housing, wherein a third extension is formed on the support having a flat end face, the projection of which in the longitudinal direction of the housing is equal to or greater than the projection of the extension on the basic housing body, including the protruding ones Is contacts, while all extensions of the wearer are contactless.
  • a particularly easy insertion of the securing element is obtained if the carrier is rotatably supported to a limited extent, it being advantageous if the carrier is latched onto the basic housing body in at least one position in which its extensions are aligned with the extensions or contacts on the basic housing body .
  • Another solution is to move the extension in the housing so that it can be moved from a rest position, in which it is retracted behind the outer edge of the housing, to a working position and in which it protrudes beyond the outer edge.
  • the insertion of the securing element is thus only possible when the extension is in the rest position, while the working position of the extension prevents removal.
  • the movable extension can advantageously be coupled to one of the contacts, such that the contact is only in the working position of the movable extension beyond the outer edge of the housing in the sense of making contact with the socket, while the contact is withdrawn in the rest position.
  • the housing can be provided at one end with a radially protruding circular edge that covers the extension or extensions, which is particularly advantageous if the securing element for the purpose of making contact in the frame is rotated.
  • the fuse device is a commercially available glass tube fine fuse with metallic end caps, which is held in a cavity of the housing.
  • the microfuse is easily contacted by contact tabs which sit on the metallic end caps and which protrude outward through the associated appendages and form the contacts of the securing element.
  • a spacer can sit between the contact lugs, particularly in the version with a glass tube microfuse, which extends between the contacts in the extension and contains a recess aligned with the recess in the extension, in its shape the electrical characteristic of the security element is encrypted.
  • At least one of the contacts is located laterally next to the inserted securing element, the position and the shape of the contacts being adapted to the operating position of the associated contact of the securing element is.
  • both contacts of the socket can also be arranged laterally, which, as mentioned above, makes inadmissible bridging between the contacts considerably more difficult. This can be further improved if the chamber is designed in such a way that the inserted securing element can be rotated at least to a limited extent in the chamber, because then the contacts protrude behind the inner edge of the opening and are practically no longer accessible from the outside.
  • this design of the chamber is advantageous if one of the extensions of the securing element contains a recess and the coding device has a projection protruding into the chamber, the shape of which is adapted to the shape of the cooperating recess in one of the extensions of the securing element and is located inside the Chamber is in the path of movement of the associated recess of the securing element, such that a rotation of the securing element into the contact position is only possible and otherwise blocked if there is sufficient agreement between the shape of the recess and the shape of the projection.
  • the chamber below the opening contains a lateral recess which is open towards the interior of the chamber and is located in the path of movement of the movable extension and whose shape is adapted to the shape of the movable extension, such that only when there is sufficient correspondence between the movable extension and the recess is an adjustment of the extension possible, which is otherwise blocked.
  • a smooth conclusion of the socket with the outer end face of the securing element with a simultaneous increase in the number of codes is obtained if the opening is surrounded by an edge arranged outside the chamber, which is adapted to the outer contour of this end face of the securing element.
  • the socket with the associated contacts is an integral part of the housing of the electrical equipment, it is advantageous if the opening adapted to the outer contour of the securing element is arranged in a coding plate that can be inserted into the socket, because then a separate housing is not available for each type of fuse got to. The same applies to the protruding into the chamber, which can also be designed to be interchangeable.
  • the insertion opening between its outer edge and the chamber contains the insertable coding plate, which has at least one opening which is open in the direction of the longitudinal axis of the socket and extends over a circumferential area corresponding to the coding and which has a recess in
  • the recess provided on the outer edge of the insertion opening is aligned, the extent of which in the circumferential direction is equal to the maximum extent of the recess in the coding plate, in such a way that, regardless of the coding, the fuse used is flush with the socket.
  • Such a holder can be a one-piece or at least partially one-piece component of a housing containing electronic components of a security barrier according to VDE 0170/0171 part 7.
  • electrical equipment 1 is illustrated in the form of a security barrier, in the housing of which a socket 2 for a fuse element 3 is integrated.
  • the securing element 3 explained below with reference to FIGS. 2 to 6 has an essentially cylindrical housing 4, which has a coding device 5 in the form of the extension 6, which extends over the entire axial length of the housing 4 and which is formed by an approximately central in the Extension provided recess 7 is divided into the two sections 6a and 6b.
  • Both parts, the housing 4 and the extension 6 integrally connected therewith consist of an electrically insulating plastic.
  • the extension 6, which projects radially or laterally from the housing 4, has, as the drawings show, an approximately triangular cross-section and carries on its tip facing away from the housing 4 two electrical contacts 8 and 9, which have a fuse device 11 arranged in the interior of the housing 4 are connected in the form of a commercially available glass tube microfuse with the dimensions 5 x 20 mm. Both contacts 8 and 9, one of which is located in section 6a and the other in section 6b, protrude slightly beyond the outer contour of extension 6; the two contacts 8 and 9 also run parallel to the longitudinal axis of the cylindrical housing 4.
  • a smooth-walled cylindrical bore 12 which is coaxial with the housing 4 and which is closed at one end of the housing 4, in FIG. 2 the lower one, by a bottom 13 connected in one piece to the housing 4, while a housing closure 14 is inserted at its upper end face, which is held in place by means of a cap 15 snapped onto the housing 4.
  • the glass tube microfuse 11 on the metallic end caps contact tabs 16 and 17 are pushed, the shape of which is shown in detail in FIG. 6.
  • each of the contact tabs 16, 17 consists of a cylindrical sleeve-shaped section 19 which, in order to be resiliently expandable, is slit longitudinally and has a radially projecting extension 21 which is located diametrically opposite the slot 22.
  • the end of the extension 21 facing away from the sleeve-shaped section 19 forms the contact 8 or 9 protruding from the extension 6.
  • the contact lugs 16, 17 protrude with their extensions 21 through the extension 6 or its sections 6a and 6b to the outside, for which purpose, as can be seen in particular in FIG. 3, the extension 6 has a longitudinal slot extending through to the bottom 13 with a thickness of the extensions 21 has a corresponding width.
  • These contact lugs 8, 9, the height of which corresponds to the height of the cap of the microfuse 11, can be bent, for example, from a sheet metal strip into the corresponding shape.
  • a plastic spacer or filler 23 is pushed onto the fine fuse 11, which has the same shape in a section perpendicular to the longitudinal axis of the fine fuse 11 as the two contact tabs 16 and 17 and also from a longitudinally slotted sleeve-shaped section 24 and a radially projecting extension 25 is formed.
  • the spacer 23 projects into the area of the slot provided in the extension 6, which area is not filled by the extensions 21 of the contact tabs 16, 17.
  • a recess 26 provided in the extension 25 of the spacer 23 is adapted in its dimensions to the recess 7 in the extension 6, so that the spacer 23 is flush at all external points with the Coding device 5 belonging extension 6 completes.
  • the housing closure 14 arranged above the microfuse 11 serves to hold the essentially cylindrical microfuse 11, which is otherwise loosely inserted in the housing 4, in the axial direction with as little play as possible.
  • the housing closure 14 has a circular disk 27 which is inserted into the cylindrical bore 12 without play, so that the fine-locking device 11, which is provided with flat end faces, is fixed between the underside of the disk 27 and the top of the bottom 13.
  • An extension 28 formed radially on the disk 27 extends into the slot area in the extension 6 which remains free above the contact tab 16 and is flush with the section 6a.
  • a coaxial cylindrical projection 29 formed on the outer end face of the disk 27 forms, on the one hand, a stop and latching device for the cap 15 and, on the other hand, contains a slot 31 in its outer flat end face, with the aid of which the securing element 3 in the socket 2 can be rotated.
  • annular, undercut bulge 33 is formed on the end face 32 of the housing 4 facing away from the bottom 13, which only has a slot 34 aligned with the slot in the extension 6 at 34 in order to allow the passage of the extension 28 of the To enable housing lock 14.
  • a circumferential, parallel-flanking groove 35 is formed in the annular bead 33, into which three claws 36, 37 and 38 of the cap 15 engage, which is shown in FIG. 4 with a view of its underside.
  • the cap 15 has a downwardly projecting cylindrical edge 39, on the lower edge of which the three claws 36, 37, 38 are formed.
  • the edge 39 is slotted in the immediate vicinity of the claws 36 to 38 in the direction parallel to the generatrix, so that when the cap is snapped onto the bead 33, the edge regions 39 carrying the claws 36 to 38 can move radially outward.
  • the outer diameter of the cap 15 corresponds to the outer diameter of the housing 4, so that there is a smooth transition, while the height of the cap corresponds to the height of the projection 29, which is in a coaxial opening 40 of the cap 15 and flush with the top of the cap 15 completes.
  • the opening 40 is surrounded within the cap 15 by a cylindrical projection 41 of the same inner diameter, which has a stop recess at 42. This stop recess 42 interacts with a stop 43 formed on the disc 27 and limits the possible rotational movement of the cap 15 on the housing 4.
  • Four grooves 44, 45 formed in the inner circumferential surface of the cylindrical extension 41 and running in the longitudinal direction serve as a latching device, which also includes corresponding projections 48 and 49 cooperate on the outer circumferential surface of the cylindrical projection 29, whereby the cap 15 is held in place in each contact position in which the recess 42 abuts the stop 43.
  • a nose 51 is formed, which corresponds in cross section to the cross section of the projection 6, namely the nose 51 is formed in such a place that it is aligned with the extension 6 when the cap 15 in one of its two end positions is rotated.
  • the cap 15 serves as a rotatable carrier for a further extension 52 belonging to the coding device 5.
  • the extension 52 is on the Edge 39 integrally formed and has a height that is less than the height of the edge 39. It runs in the circumferential direction, and there is the possibility of coding by varying the position of the extension 52 relative to the nose 51 and / or by changing the circumferential angle over which the extension 52 extends.
  • the securing element 3 is assembled in such a way that first the contact tab 16, the filler piece 23 and finally the contact tab 17 are pushed onto the glass tube microfuse 11, the filler piece 23 being seated essentially in the area of the glass part between the metal caps.
  • the glass tube microfuse 11 prepared in this way is inserted into the housing 4 with the projections 21 and 25 aligned with one another, whereupon the housing closure 14 is inserted. This results in an arrangement as shown in FIG. 3.
  • the cap 15 is pushed onto the annular bead 33 until the three claws 36, 37, 38 snap into place.
  • the securing element 3 is thus closed in a non-detachable manner, and the only electrical connection to the glass tube microfuse 11 is via the contacts 8 and 9, which protrude radially from the extension 6 on both sides of the recess 7.
  • the cylindrical edge 39 merges smoothly into the cylindrical circumferential surface of the housing 4, which also applies to the nose 51 and the extension 6 located underneath in the corresponding position. Only the extension 52 projects beyond the outer circumferential surface of the housing 4.
  • FIG. 7 An alternative embodiment of the cap 15 is illustrated in FIG. 7, a further extension 53 being integrally formed on the cylindrical edge 39 in addition to the nose 51 and the extension 52.
  • the extension 53 the radial extension of which, in relation to the longitudinal axis of the housing 4, is equal to the radial extension of the extension 52, is located on the side of the extension 52 facing away from the end face of the cap, which in this case is dimensioned independently of the electrical values of the fuse device 11 has, ie its extension in the circumferential direction of the Ran the 39 is constant.
  • the coding is rather in the additional extension 53, the extent of which along the circumference of the edge 39 depends on the electrical parameters of the fuse device 11 in the interior of the housing 4. In this way it is achieved that the externally visible end face of the cap 15, which points downward in FIG. 7, is independent of the coding in its shape. This has the advantage that the corresponding coding device interacting with it can be made interchangeable in the version, as explained below.
  • Fig. 8 the matched to the securing element 3 socket 2 is illustrated in longitudinal section.
  • the socket 2 contains a chamber 60 which is also cylindrical in accordance with the outer peripheral surface of the cylindrical housing 4 and which is accessible via an insertion opening 61 for the securing element 3 to be used.
  • the insertion opening 61 forms part of the coding device belonging to the socket 2, which is complementary to the coding device of the securing element 3.
  • the area of the insertion opening 61 is equal to the projection of the securing element 3 as described above, namely parallel to its longitudinal axis, i.e.
  • the insertion opening consists of a circular opening corresponding to the diameter of the cylindrical part of the housing 4, which is expanded by partial openings corresponding to the contour of the extension 6 and the extension 52, as shown in FIGS. 1 and 7.
  • the recess 62 which is adapted to a contour of the extension 6 and has an approximately triangular cross section, and for the extension 52 there is the sector-shaped recess 63.
  • the chamber 60 adjoining the insertion opening 61 is cylindrical with a diameter that corresponds to the diameter of the housing 4 of the securing element 3. On its side opposite the insertion opening 61, it is closed off by a flat bottom 64, the distance between the upper edge of the insertion opening 61 up to the top of the bottom 64 corresponding to the length of the securing element 3 from its bottom 13 to the top of the cap 15.
  • the socket 2 contains a further secondary chamber or recess 65, which extends parallel to the chamber 60 and is connected to the latter via a common rectangular opening 66 in the wall of the chamber 60.
  • the secondary chamber 65 serves to receive the extension 6 and is dimensioned such that the securing element 3 can perform a limited rotational movement about its longitudinal axis in the socket 2 when actuated appropriately.
  • the secondary chamber 65 therefore has a depth, based on the longitudinal axis of the chamber 60, which corresponds at least to the radial distance of the contacts 9 and 8 from the longitudinal axis of the securing element 3 and has an extent in the circumferential direction, relative to the chamber 60, which corresponds to the corresponds to the intended rotation angle.
  • the side wall of the secondary chamber 65 which is not visible on the left in relation to FIG. 7, runs directly in the extension of the corresponding side surface of the recess 62, so that regardless of the effectiveness of the stop 43 or the stop recess 42, the securing element 3 cannot be turned too far.
  • the mentioned side wall of the secondary chamber 65 is opposite a side wall 67 from which two resilient electrical contacts 68 and 69 protrude, which run in front of the rear wall 71 of the secondary chamber 65 and extend in the circumferential direction.
  • the distance between the two electrical contacts 68 and 69 corresponds to the distance between the electrical contacts 8 and 9 on the securing element 3.
  • a stop 72 also protrudes between the two electrical contacts 68 and 69 into the secondary chamber 65, as detailed in FIG Fig. 8 is shown in perspective.
  • the approximately cuboidal stop 72 is adapted in its cross-sectional area parallel to the longitudinal axis of the chamber 60 to the recess 26 in the extension 6. It contains an approximately flat stop surface 73 which merges into an arcuate surface 74.
  • the arcuate surface 74 extends approximately in the extension of the cylindrical side wall of the chamber 60 and also has a radius of curvature which is somewhat larger than the radius of curvature of the said cylindrical side wall.
  • a forked tab 75 with undercuts 76 is formed on it, which is in a corresponding pocket of the socket 2 located behind the rear wall 71 and not visible in the drawing.
  • the relative arrangement between the recess 62, the electrical contacts 68 and 69 and the stop surface 73 of the stop 72 is such that the contacts 68 and 69 spring back slightly in the direction of the side wall 67 with respect to a plane containing the stop surface 73, while on the other hand said plane springs back slightly in relation to the adjacent side surface of the recess 62.
  • the housing 4 together with the extension 6 can be rotated about its longitudinal axis in the chamber 60, for example by means of a screwdriver inserted into the tool holder 31.
  • the angle of which is limited either by the stop 43 in connection with the stop recess 42 or the side wall 67, the contacts 8 and 9 of the securing element 3 finally come into contact with the contacts 68 and 69 of the socket 2 and give the desired one electrical contact.
  • the electrical contacts 68 and 69 can, as shown, be corrugated to form a resilient, releasable snap-in connection with the electrical contacts 8 and 9, which secures the securing element 3 in the Hold the switched on position.
  • a securing element 3 which fits completely through the insertion opening 61 including its recesses 62 and 63, but in which the extension 6 has an insufficient radial extension, the securing element 3 in the socket 2 can possibly be rotated, however no contact is made because contacts 8 and 9 do not reach contacts 68 and 69 of the socket.
  • the fuse element 3 described so far, in conjunction with the associated socket 2 has a very large variety of coding possibilities for the electrical characteristic values of the fuse device, such as the current carrying capacity and the tripping characteristic.
  • the current carrying capacity is greater than that for the respective electrical equipment 1 maximum permissible current load.
  • the recess 26 in connection with the stop 72 increases the coding variety significantly, whereby, as indicated in FIG.
  • the recess 26 need not have a simple rectangular cross section, but also a more or less complicated shape with several radial recesses can have, to which the stop 72 is appropriately adapted to prevent securing elements 3 with not correspondingly contoured recess 26 in the socket 2 can be rotated into the operating position.
  • the fuse element 3 inserted into the socket 2 closes with its cap 15 smooth and flush the insertion opening 61 and its recesses 62 and 63. Removing the fuse element 3 in the rotated position in which the contacts 8 and 9 with the contacts 68 and 69 in A connection is not possible because the upper edge of the extension 6 is then in an area of the secondary chamber 65 which lies next to the recess 62 and is closed by the upper side of the equipment 1. Only after the housing 4 in the securing element 3 has been turned back into a position in which the extension 6 is aligned with the nose 51 of the cap 15 can the securing element 3 be removed from the socket 2.
  • a slot 78 extending transversely to the chamber 60 can be machined, into which a plate 79, which is adapted to the contour of the insertion opening 61 and is rectangular on the outside, is to be inserted.
  • the plate 79 which is made of metal or plastic, serves as that part of the coding device of the socket 2 which interacts with the extension 53.
  • the plate 79 therefore contains an edge-side recess 80 which is open towards the longitudinal axis of the chamber 60 and which is adapted in shape to the extension 53, the electrical parameters of the fuse device 11 being encoded in both.
  • the recess 63 of the insertion opening 61 is adapted to the shape of the extension 52 and, like this, may not contain any encrypted information.
  • FIG. 11 Another exemplary embodiment of the type of coding is illustrated in FIG. 11.
  • the securing element 3 in which the same parts, as already explained above, are provided with the same reference numerals, does not carry an extension protruding from the circumferential surface of the housing 4, but rather two extensions 81 and 82, which are diametrical with respect to the longitudinal axis of the housing 4 opposite and are arranged at the same height with respect to the housing 4.
  • Each of the extensions 81 and 82 contains one of the two electrical contacts 8 and 9, which are electrically connected to the glass tube microfuse housed inside the housing 4, as previously described.
  • the inner structure of the securing element 3 according to FIG. 9 essentially corresponds to the structure according to FIG. 2, only with the difference that the filler 23 can be omitted.
  • the triggering characteristic can be encoded in the dimensions and / or the projection surface of the extensions 81 and 82.
  • the insertion opening for the socket 2 is adapted to the projection surface of the securing element 3, as is also illustrated in FIG. 11. Thereafter, the insertion opening 61 contains two sufficiently large recesses 83 and 84 corresponding to the extensions 81 and 82, which are closed after the insertion of the securing element 3 by corresponding extensions 85 and 86 of the cap 15 rotatably seated on the housing 4.
  • the coding can also be done with the aid of the metal plate 79 provided below the insertion opening 61, the opening 87 of which is exactly adapted to the contour of the extensions 81 and 82, while the recesses 83 and 84 have a shape and size in the insertion opening 61, so that all possible security elements 3, which lie in a predetermined range of trigger values, fit through. In this way, it is sufficient to have only the metal plate 79 ready for the coding, while otherwise the same housing with the same insertion opening 61 can be used for all applications.
  • the contact is made in that after the insertion of the securing element 3 in the socket 2 is rotated by a predetermined value until the contacts 8 and 9 come into contact with the contacts in the socket, which of course in their position to the Contacts 8 and 9 are adjusted.
  • the extensions 81 and 82 can have a rectangular or step - shaped cross section.
  • other, for example rounded or triangular, cross-sections are possible, depending on what may be cheaper in terms of production technology.
  • the securing element 3 can also, as shown in FIG. 12, be equipped with a disk-shaped flange 88, the outer diameter of which is larger than the maximum diameter determined by the two extensions 81 and 82.
  • the insertion opening 61 has a correspondingly circular shape, and the coding takes place exclusively with the aid of the metal plate 80 located underneath, it being ensured that the insertion opening 61 is closed in every rotational position of the securing element 3.
  • extension 6 belonging to the coding device 5 or the extensions 81 and 82 are rigidly attached to the securing element, it is also possible, as shown in FIG. 13, to make parts of the coding device movable.
  • the design is not limited to cylindrical housings, but prismatic shapes can be used.
  • the securing element 3 contains an approximately cuboid-shaped housing 4 with a square outline, a rectangular extension 100 corresponding to the width of the housing 4 projecting on its long side, the length of which is shorter than the length of the housing 4.
  • a movable extension 101 is accommodated in this extension 100, which smoothly merges into the corresponding side surfaces of the housing 4 on its side surfaces.
  • the movable extension 101 consists in the simplest case of an elongated cylinder flattened on two opposite sides, so that there is a flat edge which is rotatably supported in the extension 100 about its longitudinal axis, which runs parallel to the longitudinal axis of the housing 4.
  • the actuation of the extension 101 takes place with a drive 102 which is rotatably mounted in the extension 100 or the housing 4 and which has a tool holder, for example for a screwdriver.
  • a contact carrier 103 is coupled non-rotatably to the extension 101 and has the same cross-section as the rotatable extension 101 formed by a flat edge.
  • This contact carrier 103 carries an electrical contact 104, which is electrically connected to the fuse device arranged in the housing 4.
  • both components protrude in a rotational position from the otherwise flat surface of the extension 100 or the housing, while they are in another, opposite the in Fig. 11 position, 90 ° rotated position with the surface of the extension 100 approximately flat.
  • the second electrical contact of the securing device 3 is formed by a knife contact, not shown, which is known per se and is protected in a cylindrical extension 105.
  • the cylindrical extension 105 is formed on the end face of the housing 4, which lies opposite the end face with the drive 102.
  • the socket 2 in the electrical equipment 1 is also adapted to the outer contour of the securing element 3 and contains a chamber 60 for the housing 4 and a secondary chamber 65 for the extension 100.
  • the contacts 106 and 107 cooperating with the securing element 3 are located on the one hand in the base of the chamber 60 and on the other hand laterally in the secondary chamber 65.
  • the contact 106 penetrates into the knife contact 1 provided in the cylindrical extension 105, while the other contact 107, which is drawn out in an explosive manner, is located opposite the opening in the extension 100 in which the rotatable contact carrier 103 is seated.
  • the movable extension 101 can be rotated together with the movable contact carrier 3 with the securing element 3 inserted, so that the contact 104 with the contact 107 can come into contact in the version 2, whereby both connections of the fuse element 3 are connected to the corresponding circuit of the electrical equipment 1.
  • the dimensions of the movable extension 101 do not match the recess 108, for example because the movable extension 101 has a greater axial extent or because it would protrude further from the extension 100 than the depth of the recess 108 when rotated the extension 101 cannot be rotated into the position shown, and the movable contact carrier 103 cannot therefore bring its contact 104 into connection with the fixed contact 107.
  • the coding is carried out either by the shape of the fixed extension 100, the shape of the movable extension 101, by the position and arrangement of the cylindrical extension 105 and possibly also or additionally by the shape of the movable contact carrier 103, which can also assume coding functions , in each case in connection with the correspondingly designed chamber 60 or secondary chamber 65.

Landscapes

  • Fuses (AREA)
  • Saccharide Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Claims (32)

1. Elément de fusible (3) comprenant un boîtier (4) de forme essentiellement prismatique ou cylindrique, deux contacts électriques (8, 9) dont au moins l'un est accessible sur le côté extérieur du boîtier (4) latéralement ou radialement par rapport à l'axe longitudinal du boîtier (4) et qui sont reliés électriquement à un dispositif de fusion (11) disposé dans le boîtier (4), ainsi qu'un dispositif de codage (5) qui correspond à la caractéristique électrique de déclenchement du dispositif de fusion (11) et qui coopère avec un dispositif de codage complémentaire d'un socle (2) adapté pour recevoir l'élément de fusible (3), les dispositifs de codage empêchant la mise en place d'un élément de fusible (3) à caractéristique de déclenchement incorrecte, par exemple à intensité admissible trop élevée ou à vitesse de réponse incorrecte du dispositif de fusion (11), caractérisé par le fait que le dispositif de codage (5) est constitué par au moins une saillie (6, 81, 82, 100, 101, 103) qui dépasse latéralement ou radialement par rapport à l'axe longitudinal du boîtier (4) et dans la forme de laquelle est codée la caractéristique de déclenchement telle que le retard ou l'intensité admissible du dispositif de fusion (11), et qu'au moins l'un des contacts électriques (8, 9) est prévu sur une saillie (6, 81, 82, 100, 101, 103) qui code la caractéristique électrique de déclenchement.
2. Elément de fusible comprenant un boîtier (4) de forme essentiellement cylindrique, deux contacts électriques (8, 9) dont l'un au moins est accessible sur le côté extérieur du boîtier (4) latéralement ou radialement par rapport à l'axe longitudinal du boîtier (4) et qui sont reliés électriquement à un dispositif de fusion (11) disposé dans le boîtier (4), ainsi qu'un dispositif de codage (5) qui correspond à la caractéristique de déclenchement électrique du dispositif de fusion (11) et qui coopère avec un dispositif de codage d'un socle (2) adapté pour recevoir l'élément de fusible (3), les dispositifs de codage empêchant la mise en place d'un élément de fusible (3) à une caractéristique de déclenchement incorrecte, par exemple à intensité admissible trop élevée ou à vitesse de réponse incorrecte du dispositif de fusion (11), caractérisé par le fait que sur le boîtier (4) est prévue au moins une saillie (6, 81, 82) rigide dépassant radialement et portant au moins un contact (8, 9) et que le boîtier (4) présente un corps de base et un support (15) maintenu sur le corps de base de manière à pouvoir tourner par rapport à son axe longitudinal, support sur lequel est formé au moins une saillie supplémentaire (51, 52, 53, 85, 86) qui fait partie du dispositif de codage (5), la caractéristique électrique de déclenchement du dispositif de fusion étant codée dans la forme de cette saillie supplémentaire (51, 52, 53, 85, 86).
3. Elément de fusible suivant la revendication 1, caractérisé par le fait que la saillie (6, 81, 82, 100) est disposée rigidement sur le boîtier (4).
4. Elément de fusible suivant la revendication 1, caractérisé par le fait que le contact (8, 9, 104) est disposé dans la saillie rigide (6, 81, 82, 100) et dépasse de cette dernière latéralement ou radialement par rapport à l'axe longitudinal du boîtier (4).
5. Elément de fusible suivant les revendications 1 ou 2, caractérisé par le fait que la saillie rigide (6) s'étend sur toute la longueur du boîtier (4) et contient les deux contacts (8, 9) qui se trouvent à distance l'un de l'autre dans'la direction longitudinale de la saillie (6).
6. Elément de fusible suivant les revendications 1 ou 2, caractérisé par le fait que le dispositif de codage (5) présente une deuxième saillie rigide (81, 82) qui, comme la première saillie rigide, dépasse latéralement ou radialement par rapport à l'axe longitudinal du boîtier (4) et fait avec la première saillie (81, 82) un angle différent de 0°, dans un plan perpendiculaire à l'axe longitudinal du boîtier (4) et que la caractéristique de déclenchement du dispositif de fusion (11) est codée dans l'angle que font les deux saillies (81, 82) l'une avec l'autre et/ou dans la forme de la deuxième saillie (81, 82).
7. Dispositif de fusible suivant une ou plusieurs des revendications précédentes, caractérisé par le fait que dans la première et/ou dans la deuxième saillie(s) rigide(s) (6, 81, 82, 100) est prévu un évidement (26) dans la position axiale, la forme, la profondeur et/ou la longueur duquel est codée la caractéristique électrique de déclenchement du dispositif de fusion (11).
8. Elément de fusible suivant la revendication 1, caractérisé par le fait que le boîtier (4) présente un corps de base et un support (15) maintenu sur le corps de base de manière à pouvoir tourner par rapport à son axe longitudinal, support sur lequel est formé au moins une saillie supplémentaire (51, 52, 53, 85, 86) qui fait partie du dispositif de codage (5), la caractéristique électrique de déclenchement du dispositif de fusion étant codée dans la forme de cette saillie supplémentaire (51, 52, 53, 85, 86).
9. Elément de fusible suivant les revendications 2 ou 8, caractérisé par le fait que la caractéristique de déclenchement du dispositif de fusion (1 D'est codée dans l'angle circonférentiel que la saillie supplémentaire (52, 53) fait dans un plan perpendiculaire à l'axe longitudinal du boîtier (4) et que la saillie supplémentaire (52, 53) présente des dimensions radiales constantes sur cet angle circonférentiel.
10. Elément de fusible suivant les revendications 2 ou 8, caractérisé par le fait que le support (15) est disposé à l'une des deux extrémités frontales du corps de base du boîtier.
11. Elément de fusible suivant les revendications 2 ou 8, caractérisé par le fait que dans la direction longitudinale du corps de base du boîtier, il est prévu, entre la saillie supplémentaire (53) et la surface frontale du support (15), éloignée du corps de base et tournée vers l'extérieur, une troisième saillie (52) qui recouvre la saillie supplémentaire (53) et présente une étendue circonférentielle égale à l'étendue circonférentielle maximale de la saillie supplémentaire (53).
12. Elément de fusible suivant les revendications 2 ou 8, caractérisé par le fait que sur le support (15) présentant une surface frontale plane est disposée au moins une quatrième saillie (51, 85,86) dont la projection dans la direction longitudinale du boîtier est égale ou supérieure à la projection de la saillie rigide (6, 85, 86) sur le corps du base du boîtier, y compris les contacts (8, 9), toutes les saillies (51, 52, 53, 85, 86) du support (15) étant exemptes de contact.
13. Elément de fusible suivant les revendications 2 ou 8, caractérisé par le fait que le support (15) est monté avec possibilité de rotation limitée.
14. Elément de fusible suivant la revendication 1, caractérisé par le fait que la saillie (101, 103) est montée mobile dans le boîtier (4) et peut être amenée d'une position de repos dans laquelle elle est retirée derrière le bord extérieur du boîtier (4) dans une position de travail dans laquelle elle dépasse le bord extérieur, et inversement.
15. Elément de fusible suivant la revendication 14, caractérisé par le fait que l'un des contacts (104) est couplé avec la saillie mobile (103) de telle manière que ledit contact dépasse le bord extérieur du boîtier (4) dans le sens de l'établissement d'un contact avec le socle (2) dans la position de travail de la saillie mobile et se trouve retiré dans la position de repos.
16. Elément de fusible suivant la revendication 14, caractérisé par le fait que l'axe de rotation de la saillie mobile (101, 103) et du contact (104) couplé avec cette dernière s'étend parallèlement à l'axe longitudinal du boîtier (4) et que la partie mobile présente un élément d'engagement (102) pour un outil d'actionnement.
17. Elément de fusible suivant la revendication 1, caractérisé par le fait que le boîtier (4) présente à une extrémité frontale un bord circulaire (88) dépassant radialement et recouvrant la ou les saillies (81, 82).
18. Elément de fusible suivant les revendications précédentes, caractérisé par le fait que le dispositif de fusion est constitué par un fusible fin sous tube de verre du commerce, avec des capuchons d'extrémité métalliques (19).
19. Elément de fusible suivant la revendication 18, caractérisé par le fait que sur les capuchons d'extrémité métalliques (19) sont disposées des cosses de contact (16, 17) qui s'étendent vers l'extérieur à travers la ou les saillies correspondantes (6a, 6b) et forment les contacts (8, 9).
20. Elément de fusible suivant la revendication 19, caractérisé par le fait qu'entre les cosses de contact (16, 17) est disposée une pièce d'espacement (23) qui s'étend entre les contacts (8, 9) dans la saillie (6) et contient un évidement (26) qui est aligné avec l'évidement dans la saillie (6) et dans la forme duquel est codée la caractéristique électrique de déclenchement du dispositif de fusion (11).
21. Elément de fusible suivant la revendication 20, caractérisé par le fait que la pièce d'espacement (23) est disposée à l'intérieur du boîtier (4) sur le dispositif de fusion (11).
22. Socle pour l'élément de fusible suivant les revendications 1 ou 2, avec une chambre (60, 64) qui est accessible par une ouverture d'introduction frontale et dans laquelle l'élément de fusible (3) peut être introduit le long de son axe longitudinal à travers l'ouverture d'introduction (61), ainsi qu'avec au moins un contact (68, 69), disposé dans le socle et s'étendant dans la chambre, pour le contact associé de l'élément de fusible (3), ainsi qu'avec un dispositif de codage coopérant avec le dispositif de codage (5) de l'élément de fusible, caractérisé par le fait que l'ouverture d'introduction (61) pour l'élément de fusible (3) est accordée à la forme de ce dernier et constitue au moins une partie du dispositif de codage, et que la forme de la projection du passage de l'ouverture d'introduction (61) coïncide avec la forme de la projection de l'élément de fusible (3) muni d'au moins une saillie (6, 81, 82, 100), en direction de son axe longitudinal.
23. Socle suivant la revendication 22, caractérisé par le fait que l'ouverture d'introduction (16) présente un bord tourné vers l'axe longitudinal de la chambre (60) et constituant une partie au moins du dispositif de codage.
24. Socle suivant la revendication 22, caractérisé par le fait qu'au moins l'un de ses contacts (68, 69, 107) se trouve latéralement à côté de l'élément de fusible (3) introduit et que la position et la forme de ce contact (68, 69, 107) sont adaptées à la position de fonctionnement du contact correspondant (8, 9, 104) de l'élément de fusible (3).
25. Socle suivant la revendication 22, caractérisé par le fait que ses deux contacts (68, 69) se trouvent latéralement à côté de l'élément de fusible (3) introduit et que leur position et leur forme sont adaptées aux contacts (8, 9) et à la position de fonctionnement de l'élément de fusible (3).
26. Socle suivant la revendication 22, caractérisé par le fait que la chambre (60, 64) est conformée de manière que l'élément de fusible (3) introduit ou des parties dudit élément puissent tourner de façon limitée dans la chambre (60).
27. Socle suivant la revendication 22, caractérisé par le fait que le dispositif de codage contient une butée, (72) q'ui pénètre dans la chambre (60, 64), dont la forme, dans laquelle est codée la caractéristique de déclenchement du dispositif de fusion (11), est adaptée à la forme d'un évidement (26) prévu dans l'une des saillies (6) de l'élément de fusible (3) pour coopérer avec ladite butée, et qui se trouve à l'intérieur de la chambre (64) dans le trajet de mouvement de l'évidement correspondant (26) de l'élément de fusible (3), de telle manière qu'une rotation de l'élément de fusible (3) dans la position de contact soit possible uniquement en cas de coïncidence suffisante entre la forme de l'évidement (26) et la forme de la butée (72) et soit sinon bloquée.
28. Socle suivant la revendication 22, caractérisé par le fait que la chambre (64) contient, en dessous de l'ouverture d'introduction (61), un évidement (108) latéral, ouvert vers l'intérieur de la chambre (64), évidement qui se trouve dans le trajet de mouvement de la saillie mobile (101) et dont la forme est adaptée à la forme de la saillie mobile (101) de telle manière qu'un déplacement de la saillie (101) soit possible uniquement en cas de coïncidence suffisante entre la saillie mobile (101) et l'évidement et que le déplacement soit par ailleurs bloqué.
29. Socle suivant la revendication 22, caractérisé par le fait que le bord de l'ouverture d'introduction (61) présente un contour qui est adapté au contour extérieur du côté frontal de l'élément de fusible (3), situé dans l'ouverture d'introduction.
30. Socle suivant la revendication 29, caractérisé par le fait que l'ouverture d'introduction (61) présente, pour les saillies (6, 51, 52, 81, 82, 85, 86, 100) dépassant du boîtier (4), des évidements (62, 63, 83, 84) qui sont ouverts en direction parallèle à l'axe longitudinal de la chambre (60) et en direction de l'axe longitudinal.
31. Socle suivant la revendication 22, caractérisé par le fait que l'ouverture d'introduction (61) présente, entre son bord extérieur et la chambre (60), une plaque de codage (79) pouvant être rapportée et présentant au moins un évidement (40) ouvert en direction de l'axe longitudinal du socle (2), s'étendant sur une zone circonférentielle correspondant au codage et aligné avec un évidement (63) qui est prévu dans le bord extérieur de l'ouverture d'introduction (61) et dont l'étendue en direction circonférentielle est égale à l'étendue maximale de l'évidement (60) dans la plaque de codage (79), de telle manière qu'indépendamment du codage, l'élément de fusible inséré se termine chaque fois à ras du socle (2).
32. Socle suivant l'une des revendications précédentes, caractérisé par le fait qu'il fait partie du boîtier, contenant des composants électroniques, d'une barrière de sécurité (1) selon VDE 0170/0171 partie 7.
EP85111250A 1984-10-27 1985-09-06 Elément fusible Expired - Lifetime EP0180008B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111250T ATE58981T1 (de) 1984-10-27 1985-09-06 Sicherungselement.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843439437 DE3439437A1 (de) 1984-10-27 1984-10-27 Sicherungselement
DE3439437 1984-10-27

Publications (3)

Publication Number Publication Date
EP0180008A2 EP0180008A2 (fr) 1986-05-07
EP0180008A3 EP0180008A3 (en) 1987-09-09
EP0180008B1 true EP0180008B1 (fr) 1990-12-05

Family

ID=6248944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111250A Expired - Lifetime EP0180008B1 (fr) 1984-10-27 1985-09-06 Elément fusible

Country Status (5)

Country Link
US (1) US4768978A (fr)
EP (1) EP0180008B1 (fr)
JP (1) JPS61104533A (fr)
AT (1) ATE58981T1 (fr)
DE (2) DE3439437A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988313A (en) * 1989-10-16 1991-01-29 Castlebury Gerald E Fuse holder device
US5144517A (en) * 1989-10-20 1992-09-01 Pepperl + Fuchs, Inc. Intrinsically safe barrier device
CA2110795A1 (fr) * 1991-06-11 1992-12-23 Brian Bartholomew Hayes Ameliorations a des connecteurs electriques a fusible
US5588876A (en) * 1991-06-11 1996-12-31 Multico International Pty. Ltd. Fused electrical connectors
US5594404A (en) * 1994-03-15 1997-01-14 Cooper Industries Fuse orientation device
ATE216129T1 (de) * 1997-08-07 2002-04-15 Klaus Bruchmann Sicherung mit kodierung
EP0987728A1 (fr) * 1998-09-18 2000-03-22 Klaus Bruchmann Fusible à codage
JP3783198B2 (ja) * 2000-03-31 2006-06-07 矢崎総業株式会社 ヒューズボックス、ヒューズ及びヒューズブロック
US10283309B2 (en) * 2017-05-31 2019-05-07 Te Connectivity Corporation Fuse panel module with a movable fuse holder

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Publication number Priority date Publication date Assignee Title
DE134652C (fr) *
DE134404C (fr) *
AT107788B (de) * 1926-01-07 1927-11-10 Rudolf Starnberg Patronensicherung.
US2257608A (en) * 1937-10-29 1941-09-30 Keefe Arthur Electrical connection
BE479478A (fr) * 1944-02-02
US2497470A (en) * 1946-06-07 1950-02-14 Jr Fred J Roukos Multiple element fuse
US3627942A (en) * 1964-04-09 1971-12-14 Amp Inc Terminal block having an opening therein with normally engaged contacts in alignment with the opening and a plug for engagement with the contacts
DE6919101U (de) * 1968-05-06 1969-10-09 Philips Nv Sicherheitspatronenhalter
FR2063804A5 (fr) * 1969-10-31 1971-07-09 Marechal Sepm
US3891292A (en) * 1972-09-26 1975-06-24 Belling & Lee Ltd Electrical component
US3815072A (en) * 1973-01-16 1974-06-04 A Kralik Fuse and holder with rejection feature
DE2903826C2 (de) * 1979-02-01 1985-02-14 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Elektrischer Einbau-Sicherungssockel für Sicherungseinsätze mit Endkontaktkappen
ZA80536B (en) * 1979-02-06 1981-08-26 Beswick K Ltd An electrical fuse holder
US4307927A (en) * 1980-03-24 1981-12-29 Rockwell International Corporation Polarization key for electrical connector
US4481496A (en) * 1982-09-27 1984-11-06 Norden Alexander Switching fusible apparatus

Also Published As

Publication number Publication date
DE3580830D1 (de) 1991-01-17
EP0180008A3 (en) 1987-09-09
DE3439437A1 (de) 1986-04-30
ATE58981T1 (de) 1990-12-15
JPS61104533A (ja) 1986-05-22
EP0180008A2 (fr) 1986-05-07
US4768978A (en) 1988-09-06

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