EP0490287A2 - Rondelle élastique de mise à la terre ainsi qu'une fermeture à tige mise à la terre par celle-ci - Google Patents

Rondelle élastique de mise à la terre ainsi qu'une fermeture à tige mise à la terre par celle-ci Download PDF

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Publication number
EP0490287A2
EP0490287A2 EP91120959A EP91120959A EP0490287A2 EP 0490287 A2 EP0490287 A2 EP 0490287A2 EP 91120959 A EP91120959 A EP 91120959A EP 91120959 A EP91120959 A EP 91120959A EP 0490287 A2 EP0490287 A2 EP 0490287A2
Authority
EP
European Patent Office
Prior art keywords
fastening
spring
lock
wall surface
earthing
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
EP91120959A
Other languages
German (de)
English (en)
Other versions
EP0490287B1 (fr
EP0490287A3 (en
Inventor
Dieter Ramsauer
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0490287A2 publication Critical patent/EP0490287A2/fr
Publication of EP0490287A3 publication Critical patent/EP0490287A3/de
Application granted granted Critical
Publication of EP0490287B1 publication Critical patent/EP0490287B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0098—Arrangements for grounding electrical locks or elements thereof, e.g. for avoiding shocks or failure due to static electricity

Definitions

  • the invention relates to an earthing spring (here in particular an earthing spring washer) for the electrical connection of a metal mounting bracket, lock housing or the like.
  • the invention is concerned with rod locks which can be grounded by means of an earth spring washer for control cabinet doors, control cabinet flaps or the like, the metallic or electrically conductive lock case or a metal fastening bracket carrying this being electrically connected by the earth spring to the metallic or electrically conductive lock fastening surface, such as a door leaf.
  • a grounding spring that has a mounting bracket of a rod lock with the metallic wall of a electrical control cabinet connects, as well as a rod lock, on the lock case of which such a grounding spring nestles, are already state of the art, see for example catalog sheet B152 of a catalog from the company EMKA Betschmaschine, Velbert, which was published in December 1988, as well as from the same catalog Catalog sheet B 145.2.
  • the rod lock shown in catalog sheet B 152 which can also be seen in FIG. 12 (while FIG. 13 refers to catalog sheet B145.2, which figures are also used to explain the following invention), works in such a way that a welding bolt with nut and spring washer is provided for grounding the rod lock on the inside of painted doors on the metal mounting bracket that carries the lock case of a rod lock.
  • this measure serves its purpose, it has several disadvantages. So it is cumbersome to apply a welding bolt to the door leaf to be grounded, which can then be grounded using the attached grounding spring and a nut (as shown in FIG. 12).
  • the object of the invention is firstly to provide an earthing spring washer of the type mentioned at the outset, the rod closures as shown in FIGS. 12 and 13, for example, are able to ground in a simpler manner, and secondly also to provide a rod closure which can be grounded by means of an earthing spring , which eliminates the need to attach a welding bolt to the door leaf and also does not require any significant additional space on the door leaf surface, so that there are no restrictions with regard to the attachment of various additional parts, such as rod guides, locking pins on the rod, receptacles for retractable actuating levers and the like.
  • the object is achieved in that the grounding spring washer has a preferably annular clamping area which, when the lock or the like is mounted, between a bare metal or electrically conductive lock mounting surface (such as the outer surface of a fastening bracket, the outer surface of a lock case or the like) and the fastening wall surface comes to rest and comes under clamping action by fasteners such as nuts or screws, and that a projection extends from the clamping area, which is bent towards the wall surface such that edges or tips of the projection initially incline when tightening the fastener to the wall surface Put on and when it is tightened further flatten out and move the edges or tips a little along the wall surface. This creates a very intense scratching effect, which enables safe earthing without requiring additional space or additional attachment of welding bolts to the door leaf.
  • a bare metal or electrically conductive lock mounting surface such as the outer surface of a fastening bracket, the outer surface of a lock case or the like
  • a projection extends from the clamping area,
  • the spring can be single or double axially symmetrical and have a rectangular shape, at the corners of which there are incisions or cutouts, the cut being through resulting area is bent out of the rectangular base plane, for example by bending out to the remaining connection area.
  • the spring can have an outer contour adapted to the outer contour of the fastening bracket or the lock case and an opening adapted to the fastening bracket opening or the components protruding from the lock case, such as the actuation axis.
  • the spring can also be designed to be simply fixed axially symmetrically or even asymmetrically for mounting in a certain orientation, and the lock case or the mounting bracket can form a recess area into which the spring can be received in this orientation.
  • the inner contour of the opening can also form a chord in order to achieve a certain orientation in this way. The same can be achieved if the outer contour forms a flattened portion. It is particularly expedient if the spring lugs remain optically visible when the closure is mounted, in order to enable a check to be made of the fact that the earthing spring has actually been installed.
  • the earthing spring washer is provided with a, preferably annular, clamping area which, when the lock is mounted, lies between and underneath a bare metal or electrically conductive lock fastening surface (such as the outer surface of the fastening bracket, the outer surface of the lock case) and the fastening wall surface Clamping effect comes from fasteners such as nuts or screws, with a protrusion extending from the clamping area, which is bent towards the wall surface such that edges or tips of the protrusion are tightened against the wall surface when the fastening nut or fastening screw is tightened first lay it at an angle and, if you tighten it further, it will flatten out and the edges or tips will be shifted a little along the wall surface.
  • the grounding spring washer used here can have similar configurations as already mentioned above.
  • FIG. 12 shows a lock case 16 mounted on a door leaf 14 by means of a fastening bracket 12, from which two rods 18, 20 and a sash tongue 22 extend in the usual way.
  • a square 24 is used to actuate the lock, which is mounted in a cylindrical housing 28 provided with a flange 22 and external thread 26 in a manner not of interest here and extends into the lock case 16 for actuating a lock nut.
  • the bracket 12 is held on the door leaf 14 by screwing a union nut 30 onto the thread 26, which on the one hand presses the fastening bracket 12 against the door leaf 14 and on the other hand also fixes the housing 28 in the door leaf 14.
  • the door leaf has a welding bolt at the point 32, preferably the center of the door leaf, which extends through a corresponding opening in the bracket 12 and onto which a spring washer 34 of conventional design is placed and then pressed against the bracket 12 by means of a nut 36 .
  • Such a welding stud must be installed in advance in order to carry out the grounding measure.
  • the welding stud is also covered by the lock case 16 and is therefore difficult to access. If one looks at the lock case 16 from the rear, it is not recognizable whether the welding bolt is present and is grounded correctly by means of a spring washer and a nut 36.
  • the door leaf would have to be shaped in such a way that eye contact is possible from the side, or the lock case would have to be dismantled, for which purpose then also a dismantling of the lock rods 20 and possibly also the rod guides mounted by means of a welding bolt, see reference number 38, would be required.
  • FIG. 1 an embodiment can now be seen, which in turn shows a lock case 16, mounted by means of a mounting bracket 12 on a door leaf 14, again by means of a housing 28, which has a flange 22 and a screwed onto an external thread of this housing 30 has.
  • the welding bolt 32, the spring washer 34 and the nut 36 placed thereon are missing here.
  • an earth spring washer 40 can be seen which has a preferably annular clamping area 42 (see the top view according to FIG. 3) which has an opening or at least notch 44 through which the fastening means, here the housing 28 provided with a union nut, can be passed .
  • this clamping area is inserted between a bare metal or electrically conductive closure fastening surface, here the outer surface of the fastening bracket 46 and the fastening wall surface 48 of the door leaf and gets there under clamping effect.
  • the clamping area 42 has at least one, here even four projections 50, which projections extend in the direction of the wall surface 48, these projections 50 being bent such that edges or tips 52 of the When tightening the fastener on the wall surface 48, initially protrude obliquely and partially flatten out when tightening further, the edges or tips 52 being displaced a little along the wall surface until they have reached the position shown in FIGS. 1 and 2.
  • the tips 52 dig through any lacquer layers on the wall surface and penetrate into the metallic base material of the door leaf 14 and thereby establish a safe ground contact between this door leaf 14 and the ground spring washer 40, which in turn is in direct electrical surface contact with it the bare surface of the mounting bracket 12 or, not provided in the figures shown here, are connected to the lock case 16.
  • FIG. 13 a rear view of a flat bar lock, from FIG. 14, a side view of the associated lock case, and FIG. 15, an axial sectional view through this lock case, the lock case 116 on the door leaf 14 on too be attached other ways than described above, namely by a key catch 54, in the z. B.
  • two screws 56 can be screwed, which press the lock case 116 consisting of two symmetrical half shells with edge areas 58 against corresponding edges of the door leaf 14, which are formed by a suitable opening provided in the door leaf.
  • Rods emerge from the lock case, here in the form of flat rods 118, 120, which are guided by rod guides 138 and carry locking means in a manner not shown here, such as caster rollers 21, which lie behind the fold 23 of a door frame or a cabinet housing 25 can.
  • a weld bolt 132 (preferably in the middle of the door leaf) welded into the door leaf is again provided, on which a tongue 11, which extends up to the housing 116 of the lock case and engages against it, is fastened by means of a conventional spring washer and the housing 116 can thus be grounded. Space is required for this tongue 11, which can make it difficult, for example, to attach fasteners located close to the lock case 116 to the locking rod 120 or to attach a receptacle 90 for a retractable pivoting lever.
  • FIG. 5 again showing a side view of a lock case 216 for actuating two flat bars 118, 120, again fastened by means of screws 56 which are fastened in a key catch 154 ( who can have a slightly different training here) are screwed in.
  • the lock case 260 differs from that shown in FIG. 14 (with the reference number 116) in that the edge region 158 has (preferably even two) cutouts 60, into which a grounding spring washer 140 can in turn be inserted in such a way that it has an annular clamping region , see reference number 142 in Fig.
  • the spring is axially (even twice axially) symmetrical, and there has a rectangular shape, at the corners of which there are cuts or cutouts 64, the area 50 separated by this cut or cutout 64 from the rectangular plane 66 on the remaining connection 68 is bent out, in the embodiment according to FIG. 7 there is only a simple axial symmetry (about the axis 70) with respect to the projections 150. If one takes into account the asymmetrical shape of the opening 144, there is no symmetry whatsoever. This opening 144 has the effect that (if the slug 72, which starts from the key catch 154, has a corresponding outer contour, see FIG.
  • the grounding spring washer can only be mounted in a certain position, namely in the position in which the tips 152 in Point in the direction of the wall surface 48 of the door leaf 14.
  • This asymmetrical shape can therefore preclude incorrect assembly, in which, for example, the tips would not point to the door leaf surface 48 but to the surface 146 of the lock case 216.
  • This asymmetry can be created by a tendon-like constriction 74, as can be seen in FIG. 7.
  • the slug 72 has a flat 76.
  • the spring 140 also has a flat 78 on its side facing away from the projections 150, which serves, for example, to give space to the housing walls 80 of the flange 154, which form the receiving space 82 for a socket wrench.
  • the extension of the spring 140 is such that it projects over the outer edge 84 of the lock case 216 by a dimension 86, so that it is visually visible from the outside whether the grounding spring washer 140 is present at all in the assembled lock case. It can also be seen in which orientation the tips 152 are located, so that the perfect function of the mounted spring is also visually recognizable.
  • the recess 146 also has such a depth and extent that the essentially flattened spring 140 can be accommodated in its thickness as well as its extent.
  • both slugs 76 which, in the embodiment shown in FIG. 6, extend from the flange 154 , to be provided with the flattened portion 76 and on both sides in the lock case 216 sufficient edge area 258 on both sides with a recess area 246 so that the spring can also be inserted on both sides.
  • both the flange part 154 and the half 86 of the lock case 216 facing this flange part have a depression 246 or 146 provided for the spring, whereby for reasons of symmetry it is again favorable to also provide the other half 88 with such a depression, designated 346 in FIG. 10. Then it plays no matter how the lock case is mounted around.
  • the space required by the earthing spring used here is very small outside the lock case area (practically only the area protruding by dimension 86 for optical control), while in the prior art, as can be seen in FIG. 13, the spring 11 carried by the welding bolt 132, which abuts the ground on the outer surface of the lock case 116, takes up considerably more space and, in some embodiments in which, for example, an additional part 90 (here, for example, a receptacle for a pivot lever) is provided, this additional part 90 cannot be mounted anywhere close to the lock case 116, which would sometimes be useful, for example with very short swivel lever locks.
  • an additional part 90 here, for example, a receptacle for a pivot lever
  • FIG. 9 shows a somewhat different form of an earthing spring 240, which can also be used and with its tip 152 lies against the door leaf 14, with its other tip 253 against the outer surface 146 of the lock case.
  • This embodiment cannot be assembled incorrectly, since if the assembly were reversed, one tip would each point to the door leaf 14 and another tip to the lock case.
  • the spring is preferably made of stainless steel or galvanized spring steel and then has a thickness of z. B. 0.4 ... 0.6 mm.

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EP91120959A 1990-12-10 1991-12-06 Rondelle élastique de mise à la terre ainsi qu'une fermeture à tige mise à la terre par celle-ci Expired - Lifetime EP0490287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9016696U 1990-12-10
DE9016696U DE9016696U1 (de) 1990-12-10 1990-12-10 Erdungsfederscheibe sowie mittels Erdungsfederscheibe erdbarer Stangenverschluß

Publications (3)

Publication Number Publication Date
EP0490287A2 true EP0490287A2 (fr) 1992-06-17
EP0490287A3 EP0490287A3 (en) 1993-01-13
EP0490287B1 EP0490287B1 (fr) 1996-05-22

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EP91120959A Expired - Lifetime EP0490287B1 (fr) 1990-12-10 1991-12-06 Rondelle élastique de mise à la terre ainsi qu'une fermeture à tige mise à la terre par celle-ci

Country Status (2)

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EP (1) EP0490287B1 (fr)
DE (2) DE9016696U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844709A2 (fr) * 1996-11-26 1998-05-27 Alcatel Cabling Systems S.A./N.V. Boíte pour équipement électrique
US6507267B2 (en) * 1999-01-08 2003-01-14 Therm-O-Disc, Incorporated Thermostat with spring clip for accommodating out-of-round tubing
US6871884B2 (en) * 2000-06-02 2005-03-29 Emka Beschlagteile Gmbh & Co. Kg Bar lock for a locking system
CN106992403A (zh) * 2017-04-19 2017-07-28 珠海优特电力科技股份有限公司 接地桩

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29904771U1 (de) * 1999-03-16 1999-07-08 Emka Beschlagteile Gmbh & Co. Kg, 42551 Velbert Stangenverschluß mit Erdungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475303A1 (fr) * 1980-02-05 1981-08-07 Stucchi Spa Aag Structure de bornier pour la connexion de conducteurs electriques pour appareils electriques en general
DE8119513U1 (de) * 1981-07-03 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zur elektromagnetischen Abschirmung von Kabeln
EP0248142A1 (fr) * 1986-06-06 1987-12-09 ISEO SERRATURE Spa Espagnolette commandée par cylindre conventionnel
EP0349713A2 (fr) * 1988-04-19 1990-01-10 Rittal-Werk Rudolf Loh GmbH & Co. KG Serrure à pêne rotatif, et moyens de fixation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475303A1 (fr) * 1980-02-05 1981-08-07 Stucchi Spa Aag Structure de bornier pour la connexion de conducteurs electriques pour appareils electriques en general
DE8119513U1 (de) * 1981-07-03 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zur elektromagnetischen Abschirmung von Kabeln
EP0248142A1 (fr) * 1986-06-06 1987-12-09 ISEO SERRATURE Spa Espagnolette commandée par cylindre conventionnel
EP0349713A2 (fr) * 1988-04-19 1990-01-10 Rittal-Werk Rudolf Loh GmbH & Co. KG Serrure à pêne rotatif, et moyens de fixation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844709A2 (fr) * 1996-11-26 1998-05-27 Alcatel Cabling Systems S.A./N.V. Boíte pour équipement électrique
EP0844709A3 (fr) * 1996-11-26 1999-06-02 Alcatel Cabling Systems S.A./N.V. Boíte pour équipement électrique
US6507267B2 (en) * 1999-01-08 2003-01-14 Therm-O-Disc, Incorporated Thermostat with spring clip for accommodating out-of-round tubing
US6871884B2 (en) * 2000-06-02 2005-03-29 Emka Beschlagteile Gmbh & Co. Kg Bar lock for a locking system
CN106992403A (zh) * 2017-04-19 2017-07-28 珠海优特电力科技股份有限公司 接地桩
CN106992403B (zh) * 2017-04-19 2022-12-30 珠海优特电力科技股份有限公司 接地桩

Also Published As

Publication number Publication date
EP0490287B1 (fr) 1996-05-22
DE59107843D1 (de) 1996-06-27
DE9016696U1 (de) 1992-04-09
EP0490287A3 (en) 1993-01-13

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