EP0025472A1 - Ecrou de fixation de fermeture de porte d'armoire électrique pour la fixation de fermetures en métal pour des portes d'armoire électrique - Google Patents

Ecrou de fixation de fermeture de porte d'armoire électrique pour la fixation de fermetures en métal pour des portes d'armoire électrique Download PDF

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Publication number
EP0025472A1
EP0025472A1 EP80100170A EP80100170A EP0025472A1 EP 0025472 A1 EP0025472 A1 EP 0025472A1 EP 80100170 A EP80100170 A EP 80100170A EP 80100170 A EP80100170 A EP 80100170A EP 0025472 A1 EP0025472 A1 EP 0025472A1
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EP
European Patent Office
Prior art keywords
nut
earthing
attachment according
grounding
teeth
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.)
Granted
Application number
EP80100170A
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German (de)
English (en)
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EP0025472B1 (fr
EP0025472B2 (fr
Inventor
Friedhelm Runge
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to AT80100170T priority Critical patent/ATE10048T1/de
Publication of EP0025472A1 publication Critical patent/EP0025472A1/fr
Publication of EP0025472B1 publication Critical patent/EP0025472B1/fr
Application granted granted Critical
Publication of EP0025472B2 publication Critical patent/EP0025472B2/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
    • E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
    • E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
    • E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact

Definitions

  • the invention relates to an earth fastening in the form of a nut, screw or bracket, in particular for fastening closures for control cabinet doors, in which the closure passed through a metallic wall through electrical contact between the lateral contact surface of the earth nut or screw and the metallic wall becomes.
  • Control cabinets are usually made of sheet metal for safety reasons, the control cabinet door z. B. is provided with a rod lock or twist lock, as z. B. is described in DE-Gbm 76 21 270.
  • a rod lock or twist lock As z. B. is described in DE-Gbm 76 21 270.
  • To actuate this rod lock or another lock that has a grater an opening is punched into the sheet of the door leaf, through which a screw provided with an axial bore is passed, which forms a bearing for the cabinet door locking devices and even by means of a nut in the Die cut can be attached.
  • These locking devices can also have a square arranged within the bore, which can be rotated with a handle or key that can be plugged onto this square.
  • Nomel disks which are fan-shaped and have on their outer edges in the one axial direction protrusions, while on the contact surface for the mother have radial, in the other axial direction protruding corrugations, which also to secure the Serve mother.
  • a disadvantage of the use of serrated lock washers and Nomel washers is the fact that an additional part is required, which on the one hand increases costs and on the other hand may be inserted incorrectly or even forgotten during assembly, so that the purpose of securing is not achieved.
  • the disadvantage of the locking tooth nut is that it is relatively expensive and, because of the sharpness of the toothed strips directed in the loosening direction, does not ensure that actually hard layers of lacquer or oxide layers are penetrated to the extent that the nut is screwed tight enough that a perfect electrical contact is made.
  • the object of the invention is to provide an earthing fixture of the type mentioned at the outset, which certainly establishes an earthing contact with the metallic door leaf surface, is inexpensive to manufacture and, if possible, cannot be incorrectly assembled or forgotten.
  • the object is achieved in that on one side surface of the grounding attachment has at least one tooth that is sharp in the tightening direction for scratching non-conductive layers, in particular lacquer and oxide layers on the metallic wall.
  • the grounding attachment can be in various forms, e.g. B. as a U-shaped spring clip that can be inserted into lateral grooves of the closure body, or as a nut or as a nut with washer.
  • the teeth can be formed by sharpened pins inserted into the side surfaces of the grounding nut, which pins can be made of steel, hard metal or another hard, conductive material.
  • Such a depression can also be provided independently of the manufacture of the tooth. Because scraped material can be absorbed in this depression, it cannot get stuck between the actual contact surface of the nut and the door leaf and thereby deteriorate the grounding contact.
  • the height of the tooth must be greater than the thickness of the lacquer or oxide layer, which is, for example, 5 0 x 10 -6 m.
  • the tooth since the tooth may become partially blunted during tightening, it has been found useful to design the tooth so that after it is made it will protrude about 0.2 to 0.4 mm beyond the side surface of the grounding nut.
  • grounding nut is punched out of sheet metal and / or deep-drawn.
  • the savings result from lower material requirements as well as from a simplified manufacturing process.
  • This last-mentioned point of view is achieved in particular when the teeth are not specially manufactured, but instead the ridge of a sheet metal edge forms the "teeth".
  • This sheet edge can come about in various ways, for example in that the deep-drawn grounding nut has the shape of a cup, from whose inner bottom a tube with an internal thread arranged coaxially to the cup wall extends, the height of which is lower than that of the cup wall, the free edge of which forms the teeth . Due to this construction, the screw only rests with its narrow cup wall edge on the metal surface to be grounded, so that there is a very high surface pressure, which in connection with burrs on this edge leads to a secure scratching of the paint when the screw is tightened. It is particularly favorable if this cup wall edge forms a circle coaxial to the nut axis, because then a particularly intensive scratching of an annular area of the surface to be grounded is possible.
  • the cup wall has a circular cross section in the area of the free edge, as already described, but in the area of the base approach by embossing carries a square or hexagonal cross-section for attaching a wrench.
  • grounding nut is preferably produced by deep drawing.
  • a stamping process can also be used to produce an earth nut, in particular if this earth nut has the shape of a can, which is arranged coaxially in the lid and / or bottom round opening with an upturned, thread-bearing edge.
  • the punching process is made easier if the circumference of the can is polygonal. A square or hexagon will preferably be provided.
  • a base is not provided for the can, the construction is similar to that described with regard to the cup, but a larger lacquer surface is scratched up here because the edge of the cup is no longer circular.
  • the stability of such a screw can be increased if, according to yet another embodiment, by bending the tabs forming the edge surfaces of the grounding nut, in the case of a square, these are four tabs, in the case of a hexagon, six tabs, a base for the can-shaped earthing screw is formed, the Bending occurs in such a way that the cut edges of the tabs protrude in the tightening direction and thereby form the teeth required for scraping off the paint.
  • teeth can also be formed by attaching a U-shaped or V-shaped stamping to the floor panel and then bending it outwards at an angle from the floor panel level.
  • the part bent outwards in this way could in turn point in the tightening direction, but alternatively could also be directed radially outwards.
  • an annular area of the surface to be ground is scratched from the tip of the part bent outwards, the spring action of this part making it possible for the scratching process to be extended over a larger area of tightening and also for the scraped-off area . is expanded in a spiral.
  • an existing nut should be used to fasten the lock for the control cabinet door, which u. U. has no special measures for scratching paint, it may be advantageous to give the grounding nut according to the invention the shape of a washer with a hexagon circumference adapted to the existing nut, and at least one Tooth in the form of a U- or V-shaped stamping, which is bent obliquely out of the washer plane.
  • the stamping can be directed radially inwards starting from the edge, or the stamping can be applied on the edge or near the edge and the bent part points in the tightening direction. Due to the shape of the washer, which is adapted to the associated fastening nut, it is rotated when the fastening nut is tightened and the scraping is thereby achieved in the manner already described.
  • Fig. 1 is a side view of a so-called rotary bolt or friction door lock, as it is often used in electrical cabinets. It consists of a lock bearing 10, in which an actuating shaft 14 having a toggle handle 12 at its free end is rotatably supported by 90 °. The angle of rotation is limited by a nose 16, which is attached to the actual grater 18 and strikes a depression at two stop surfaces 20 at the end of the bearing cylinder 10 to limit the angle of rotation.
  • the grater 18 is fastened to the actuating shaft 14 by means of a screw 22 and slides with its grater surface 24 on a corresponding path of the door frame when the control cabinet door is closed.
  • the handle can also be removable, for example by providing a square on the actuating shaft 14 within the bearing 10, onto which a key provided with a corresponding square recess can be attached. Other embodiments such as triangular, double beard, etc. are also possible.
  • the bearing 10 and the handle 12 if these consist mostly of metal, must be electrically connected to the wall panel 26 of the door frame, so that the bearing is not caused by a wire that is torn off inside the cabinet and touches the grater 18, for example 10 and the handle 12 come under tension.
  • the opposite surface 32 of the sheet 26 was scraped bright, on which the bearing surface of a fastening nut 34 comes to rest, in which the overall arrangement is fixed in the wall sheet 26 by being punched out by the nut 34 by a corresponding thread 36 is screwed on, the bearing 10 being secured against rotation by flats 38 within the punched-out area.
  • the scratching off of the paint before the assembly of the closure device can be avoided if a nut 34 is used to fasten the closure device, as will be described in more detail below.
  • FIG. 3 shows a fastening nut which also serves as an earthing nut and which for this purpose has a plurality of teeth 40 which are sharp in the tightening direction (usually a clockwise direction of rotation), one of which is shown in FIG enlarged plan view is shown.
  • FIG. 5a shows a section through FIG.
  • the tooth is arranged in such a way that with its tip 42 when the nut is tightened, which leads to a movement of the tooth tip 42 leads to the right with respect to the sheet 26, scrapes off the lacquer layer or oxide layer 44 down to the bare metal of the sheet 26, the scraped-off lacquer or oxide chips 46 expediently being able to collect in a depression 48 which is provided in front of the tooth tip 42, as well Fig. 5b shows.
  • Z ahnspitze 42 and recess 48 may be formed in a particularly advantageous manner simultaneously by the fact that is raised with a suitable tool, for example with a simple grains or chisels, material by pressing into the surface 50 of the nut 34 in the form that the tip 42 results.
  • a suitable tool for example with a simple grains or chisels
  • the grain could, for example, be placed obliquely in the direction of the sharpness of the tooth 42 to be formed on the surface 50 and brought into the material with one blow onto the grain, thereby simultaneously forming the depression 48 and the material deposit 42, which automatically receives a certain sharpness at its uppermost position if a suitable material is selected for the nut 34.
  • Brass, hard bronze and steel are particularly suitable for this purpose.
  • the manufacture of the teeth 40 can be simplified and the shape of the teeth 40 can be optimally designed with machines that are provided specifically for this purpose.
  • the layer 44 of lacquer or oxide is thin, it has e.g. B. a thickness of less than 50 x 10 m, the nut 34 also has the usual thread and if the other parts are worked precisely, there is less than one turn between the start of scratching and the final tightening of the screw 34.
  • the surface 50 of the nut 34 approaches the surface 52 of the sheet 26 more and more, simultaneously A blunting of the tip 42a occurs, as shown in FIG. 5b, while the chips 46, insofar as they do not fall out of the area of the nut 34 anyway due to the vertical arrangement of the metal wall 26, collect in the depression 48.
  • the remaining blunted tip 42a will press a little into the sheet material of the sheet 26 and not only bring about an even closer electrical contact with an even lower contact resistance, but also a locking of the fastening nut 34.
  • the tooth 40 In most cases, it will be expedient to provide the tooth 40 with a width 54 which is only slightly smaller than the width 56 of the support 50 of the nut 34. As a result, the widest possible area of the sheet 26 is scratched free. For particularly hard materials, however, it can also be advantageous to make the tooth 40 narrower in order to obtain a sharper scratching effect. In this case, it is expedient to arrange a plurality of teeth at radially different distances R from the axis of the nut 34, the difference in distance in each case corresponding approximately to the width 54 of the individual teeth 40 or also being slightly smaller. Due to this staggered arrangement of the teeth 40, the insulating layer 44 would be removed in strips from the individual teeth, so that after z. B. a full turn of the nut 34 of the paint could be scraped in full width 56.
  • teeth 40 may be convenient to mount teeth 40 on either side of the nut so as to ensure that adequate grounding is ensured regardless of the manner in which the nut is seated.
  • the grounding nut shown in FIG. 3 can be solid, but, as will be explained in more detail below, it can also be punched out of metal sheet and / or deep-drawn, which results in considerable material savings.
  • the grounding nut will then be made of sheet steel, because it can be machined particularly well in the specified form and is still sufficient even when thin-walled sheet metal is used Stability is guaranteed.
  • FIG. 7 in a plan view of a grounding nut 34 which, ig as in particular from the F. 9 shows the sectional view shown, is deep drawn from sheet metal.
  • This nut 34 can have teeth 40 on its surface 51, as have already been described in detail with reference to FIGS. 3 to 6.
  • the teeth are formed by the free edge 62 of the cup wall 54.
  • the teeth are shown as sawtooth 64 in FIG. 9, but in many cases the natural burr of the cup rim 62, which forms during the production of the grounding nut 34, is sufficient.
  • the tube 56 extending from the inner bottom 53 has a somewhat lower height than the cup wall 54, so that the free edge of the tube 56 is somewhat opposite the edge 62 jumps back.
  • edge 62 So that the entire edge 62 with its saw teeth 64 or the teeth formed by burr can process the metal surface to be ground as intensively as possible, it is advantageous if the edge 62 represents a circle which is coaxial with the axis 66 of the nut. So that the grounding nut 34 can nevertheless be tightened by means of conventional tools such as an open-ended wrench or the like, the embodiment shown in FIGS. 7 to 9 in the area of the heel for the floor 53 has embossments 68 which the operator Give a hexagon cross-section in the upper nut.
  • the grounding nut can have another shape, for example that shown in a side view in FIG. 11 and in a sectional view in FIG. 12.
  • the grounding nut 34 here has the shape of a box which has an opening 74 and 76 in the cover 70 and in the bottom 72, respectively, with an upturned edge 78 and 80 which carries a thread.
  • the breakthrough in the ground need not necessarily have a threaded upstanding rim 80, but this increases the strength of the grounding nut.
  • the bottom 72 can also be omitted, so that there is again a similar grounding nut as that which has already been illustrated with reference to FIG. 9, but with an upsetting thread 78 instead of a pipe thread 58.
  • the upsetting is 78 in such a way that it projects over a curvature 82 over the lid surface 70, but instead the compression can also be such that such a bulge 82 is not present.
  • the grounding nut has a bottom 72, as is also shown in FIGS. 11 and 12, the bottom surface can be provided with teeth, as have already been explained with reference to FIGS. 3 to 6, but the attachment of U- or V-shaped punchings 84, which are bent obliquely outwards from the floor panel level, as can be clearly seen in FIG. 12.
  • FIG. 10 shows, in a view from below, different shapes of such punchings 84a, 84b, 84c and 84d.
  • the grounding nut shown in FIGS. 11 and 12 can be formed by deep drawing and pressing in one or at most two working steps.
  • the deep-drawing tools required for this, however, are complex and it may be advantageous for smaller quantities to be manufactured, instead of choosing a shape for the grounding nut, that with simpler tools can be manufactured.
  • Such a grounding nut is shown in Fig. 13 in a view from below. It differs from the grounding nut shown in FIGS. 11 and 12 essentially in that the bottom is formed by bending six tabs 84, 86 inwards, the tabs 84 either overlapping partially, see reference number 88, left half of FIG Fig. 7, or by abutting accordingly with or without abutment, see reference number 90 on the right half of Fig. 13.
  • the scratching tooth is formed by the outwardly overlapping corner 92, while in the embodiment shown on the right in FIG. 13, the cut edges located at the abutment 90 have the teeth, either specially arranged or caused by the natural formation of burrs. It may be expedient to bend the cutting edge 94 lying in the tightening direction slightly out of the surface of the base 72 in order to make the edge particularly effective.
  • the grounding nut can take the form of a washer 134, which, as shown in FIG. 14, can have a square or hexagonal circumference which is adapted to the corresponding circumference of the fastening nut or the head of the fastening screw, so that it fits with a suitably fitting tool is possible to tighten the washer together with the fastening screw or nut, so that the teeth arranged in the washer, regardless of which embodiment, dig into the door leaf material in the manner already described.
  • the washer can in turn be provided with scratching teeth on both sides, in which case it does not matter how the washer is mounted around.
  • Scratching teeth can be realized in a particularly simple manner by means of the punched-in portions provided with the reference number 96 in FIG. 14, which are directed radially inwards from the edge.
  • a material strip 98 is formed in each case with two punchings 96 and is bent out of the plane 100 of the washer 134 in the manner of a tongue.
  • the tip 102 of the tongue 98 forms the scratching tooth, see FIG. 15.
  • FIG. 14 shows three scratching teeth 98, 102, which point in one direction. Further scratching teeth (not shown) pointing in the other direction could be provided on the three still free hexagon edges provided with the reference number 104 in order to obtain independence from the installation direction.
  • the washer including the scraper-toothed tongues 98, 102, can be punched out in one operation, and tongues pointing in both directions can be produced simultaneously if the punching tool is designed accordingly.
  • a nut is not used to fasten a control cabinet door lock, as shown in FIG. 1, but a U-shaped bracket 234 made of conductive spring material, as shown in FIGS. 16 and 18.
  • the clamp 235 is inserted with the limbs 235 into two lateral grooves 250, one surface of the limbs 235 on the lateral surface the groove 250 and the other side resiliently supported on the inner surface of the door leaf.
  • the clamp 234 now also has scratching teeth 240, which can either be expressions 242, 248 (FIG. 20), similar to the illustration in FIGS. 5a and 5b, or else punched-out projections 284, which lie in the middle of the leg or (as shown in FIG. 18) on the outer edge of the leg.
  • an incision 284a which runs obliquely to the web 237, and to bend it outward away from the curvature.
  • the scraper teeth 240 are placed at the points of the bracket 234 where they rest on the door leaf. When clip 234 is slid on, tooth 240 then scratches through insulating layers to the metal of door leaf 26 and produces the desired grounding.
  • the bearing 10 also has a circumferential thread 36 in addition to the grooves 250, 251, the user can use an earthing clamp 234 or an earthing nut (not shown) according to the embodiments described above, depending on the stability requirements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Elimination Of Static Electricity (AREA)
  • Lock And Its Accessories (AREA)
  • Patch Boards (AREA)
EP80100170A 1979-09-08 1980-01-15 Ecrou de fixation de fermeture de porte d'armoire électrique pour la fixation de fermetures en métal pour des portes d'armoire électrique Expired - Lifetime EP0025472B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80100170T ATE10048T1 (de) 1979-09-08 1980-01-15 Befestigungsmutter zur befestigung von aus metall bestehenden verschluessen fuer schaltschranktueren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792936405 DE2936405A1 (de) 1979-09-08 1979-09-08 Erdungsmutter
DE2936405 1979-09-08

Publications (3)

Publication Number Publication Date
EP0025472A1 true EP0025472A1 (fr) 1981-03-25
EP0025472B1 EP0025472B1 (fr) 1984-10-24
EP0025472B2 EP0025472B2 (fr) 1991-07-10

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EP80100170A Expired - Lifetime EP0025472B2 (fr) 1979-09-08 1980-01-15 Ecrou de fixation de fermeture de porte d'armoire électrique pour la fixation de fermetures en métal pour des portes d'armoire électrique

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EP (1) EP0025472B2 (fr)
AT (1) ATE10048T1 (fr)
DE (2) DE2936405A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932939A1 (de) * 1989-10-03 1991-04-11 Dieter Ramsauer Mittels erdungs- und/oder befestigungsfeder in dem durchbruch einer blechwand, wie schaltschranktuer befestigbarer verschluss
DE3942774A1 (de) * 1989-10-03 1991-04-11 Dieter Ramsauer Gehaeuse fuer verschluesse, stellhebel, durchfuehrungen oder dgl., zur montage in einem druchbruch einer duennen, elektrisch leitenden wand, wie blechschranktuer oder maschinengehaeusedeckel, insbesondere verschlussgehaeuse mit erdungseinrichtung
DE4006706A1 (de) * 1990-03-03 1991-09-05 Dieter Ramsauer Vorreiberverschluss fuer klappen, seitenverkleidung, oder dgl. aus duennem wandmaterial
EP0512361A1 (fr) * 1991-05-07 1992-11-11 Steinbach & Vollmann GmbH & Co. Ecrou de mise à la terre
EP0634550A2 (fr) * 1993-07-12 1995-01-18 Elek Gmbh Fermeture tournante
WO2000055945A1 (fr) * 1999-03-16 2000-09-21 Emka Beschlagteile Gmbh & Co. Kg Systeme de fermeture a barres muni d'un dispositif de mise a la terre
EP2017407A2 (fr) 2007-07-20 2009-01-21 Container Components Europe Ltd. Ensemble de verrouillage
CN108710059A (zh) * 2018-08-23 2018-10-26 吕清胜 一种煤矿井下人工远方漏电试验装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19505227C1 (de) * 1995-02-16 1996-07-11 Schulte Gmbh & Co Kg L Erdungsmutter
GB2417367A (en) * 2004-08-19 2006-02-22 Richard Henry Pearce Electrical earthing nut
DE102013226768A1 (de) * 2013-12-19 2015-06-25 Vega Grieshaber Kg Mutter

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DE319339C (de) * 1918-09-25 1920-03-04 Aeg Elektrisch leitende Verbindung
DE460955C (de) * 1928-06-08 Ernst Welker Schraubenmuttersicherung
US2112494A (en) * 1937-11-02 1938-03-29 Illinois Tool Works Locking means for screw threaded fasteners
DE1034739B (de) * 1955-04-06 1958-07-24 Siemens Ag Erdungs- oder Nullungsanordnung fuer gekapselte elektrische Verteilungsanlagen
DE1090468B (de) * 1956-04-19 1960-10-06 Illinois Tool Works Mit Gewinde versehenes Befestigungselement
DE1230876B (de) * 1964-11-30 1966-12-22 Alois Schiffmann Dipl Kfm Klemme zur Kontaktgabe an einem elektrischen Leiter, insbesondere zum Erden einer Schiene
FR1487667A (fr) * 1966-07-25 1967-07-07 Illinois Tool Works Rondelle élastique de freinage bombée
DE1489563A1 (de) * 1964-10-26 1969-02-20 Trilux Lenze Gmbh & Co Kg Zahnscheibe zur Herstellung einer elektrisch leitenden Verbindung
US3528050A (en) * 1969-05-02 1970-09-08 Holub Ind Inc Push-on type grounding clip
GB1283036A (en) * 1968-11-07 1972-07-26 Albert Leonard Pike Improvements in and relating to nut like securing devices for securing or locking electric fittings or components
GB1298759A (en) * 1970-03-09 1972-12-06 Albert Leonard Pike Improvements in and relating to nuts
CA969846A (en) * 1972-11-02 1975-06-24 Julius P. Andrasik Reducing assembly
JPS5111031Y1 (fr) * 1970-03-24 1976-03-25
US4060301A (en) * 1974-03-12 1977-11-29 Beatty Albert W Electrical connector for transmission line insulators
DE2641177A1 (de) * 1976-09-13 1978-03-16 Wolf Dipl Ing Riebling Sicherung fuer schrauben oder muttern gegen unbeabsichtigtes loesen

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DE7621270U1 (de) † 1976-07-06 1976-12-23 Fa. Emil Krachten Jun., 5620 Velbert Stangenverschluss

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE460955C (de) * 1928-06-08 Ernst Welker Schraubenmuttersicherung
DE319339C (de) * 1918-09-25 1920-03-04 Aeg Elektrisch leitende Verbindung
US2112494A (en) * 1937-11-02 1938-03-29 Illinois Tool Works Locking means for screw threaded fasteners
DE1034739B (de) * 1955-04-06 1958-07-24 Siemens Ag Erdungs- oder Nullungsanordnung fuer gekapselte elektrische Verteilungsanlagen
DE1090468B (de) * 1956-04-19 1960-10-06 Illinois Tool Works Mit Gewinde versehenes Befestigungselement
DE1489563A1 (de) * 1964-10-26 1969-02-20 Trilux Lenze Gmbh & Co Kg Zahnscheibe zur Herstellung einer elektrisch leitenden Verbindung
DE1230876B (de) * 1964-11-30 1966-12-22 Alois Schiffmann Dipl Kfm Klemme zur Kontaktgabe an einem elektrischen Leiter, insbesondere zum Erden einer Schiene
FR1487667A (fr) * 1966-07-25 1967-07-07 Illinois Tool Works Rondelle élastique de freinage bombée
GB1283036A (en) * 1968-11-07 1972-07-26 Albert Leonard Pike Improvements in and relating to nut like securing devices for securing or locking electric fittings or components
US3528050A (en) * 1969-05-02 1970-09-08 Holub Ind Inc Push-on type grounding clip
GB1298759A (en) * 1970-03-09 1972-12-06 Albert Leonard Pike Improvements in and relating to nuts
JPS5111031Y1 (fr) * 1970-03-24 1976-03-25
CA969846A (en) * 1972-11-02 1975-06-24 Julius P. Andrasik Reducing assembly
US4060301A (en) * 1974-03-12 1977-11-29 Beatty Albert W Electrical connector for transmission line insulators
DE2641177A1 (de) * 1976-09-13 1978-03-16 Wolf Dipl Ing Riebling Sicherung fuer schrauben oder muttern gegen unbeabsichtigtes loesen

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932939A1 (de) * 1989-10-03 1991-04-11 Dieter Ramsauer Mittels erdungs- und/oder befestigungsfeder in dem durchbruch einer blechwand, wie schaltschranktuer befestigbarer verschluss
DE3942774A1 (de) * 1989-10-03 1991-04-11 Dieter Ramsauer Gehaeuse fuer verschluesse, stellhebel, durchfuehrungen oder dgl., zur montage in einem druchbruch einer duennen, elektrisch leitenden wand, wie blechschranktuer oder maschinengehaeusedeckel, insbesondere verschlussgehaeuse mit erdungseinrichtung
DE3932939B4 (de) * 1989-10-03 2007-09-20 Dieter Ramsauer Mittels Erdungs- und/oder Befestigungsfeder in dem Durchbruch einer Blechwand, wie Schaltschranktür befestigbarer Verschluß
DE4000517C2 (de) * 1989-10-03 2003-02-13 Dieter Ramsauer Verschlußgehäuse mit Flansch zur Montage in einem Durchbruch in einer dünnen Wand, wie Blechschranktür oder Gehäusedeckel
DE4006706C2 (de) * 1990-03-03 1999-04-08 Dieter Ramsauer Vorreiberverschluß für Klappen, Seitenverkleidung, oder dgl. aus dünnem Wandmaterial
DE4006706A1 (de) * 1990-03-03 1991-09-05 Dieter Ramsauer Vorreiberverschluss fuer klappen, seitenverkleidung, oder dgl. aus duennem wandmaterial
EP0512361A1 (fr) * 1991-05-07 1992-11-11 Steinbach & Vollmann GmbH & Co. Ecrou de mise à la terre
EP0634550A3 (fr) * 1993-07-12 1995-07-12 Elek Gmbh Fermeture tournante.
EP0634550A2 (fr) * 1993-07-12 1995-01-18 Elek Gmbh Fermeture tournante
WO2000055945A1 (fr) * 1999-03-16 2000-09-21 Emka Beschlagteile Gmbh & Co. Kg Systeme de fermeture a barres muni d'un dispositif de mise a la terre
EP2017407A2 (fr) 2007-07-20 2009-01-21 Container Components Europe Ltd. Ensemble de verrouillage
EP2017407A3 (fr) * 2007-07-20 2013-04-24 Container Components Europe Ltd. Ensemble de verrouillage
CN108710059A (zh) * 2018-08-23 2018-10-26 吕清胜 一种煤矿井下人工远方漏电试验装置

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EP0025472B1 (fr) 1984-10-24
DE2936405A1 (de) 1981-03-26
DE3069475D1 (en) 1984-11-29
ATE10048T1 (de) 1984-11-15
EP0025472B2 (fr) 1991-07-10

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