EP0640404B1 - Couvercle - Google Patents

Couvercle Download PDF

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Publication number
EP0640404B1
EP0640404B1 EP93113510A EP93113510A EP0640404B1 EP 0640404 B1 EP0640404 B1 EP 0640404B1 EP 93113510 A EP93113510 A EP 93113510A EP 93113510 A EP93113510 A EP 93113510A EP 0640404 B1 EP0640404 B1 EP 0640404B1
Authority
EP
European Patent Office
Prior art keywords
covering cap
threaded stud
fastening
cap
add
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
EP93113510A
Other languages
German (de)
English (en)
Other versions
EP0640404A1 (fr
Inventor
A.C. Werner
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.)
Nedschroef Plettenberg GmbH
Original Assignee
Nedschroef Plettenberg 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 Nedschroef Plettenberg GmbH filed Critical Nedschroef Plettenberg GmbH
Priority to AT93113510T priority Critical patent/ATE159870T1/de
Priority to ES93113510T priority patent/ES2112362T3/es
Priority to DE59307648T priority patent/DE59307648D1/de
Priority to EP93113510A priority patent/EP0640404B1/fr
Publication of EP0640404A1 publication Critical patent/EP0640404A1/fr
Application granted granted Critical
Publication of EP0640404B1 publication Critical patent/EP0640404B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated

Definitions

  • the invention relates to a method for producing a paint-free connection to an add-on part by means of a protruding threaded bolt of a metal sheet, and to a device for carrying out this method.
  • a typical application for this is in automotive engineering, where threaded bolts are attached to a sheet metal part by means of stud welding or rivets or spot welding a so-called T-screw (threaded bolts with sheet metal tabs protruding on both sides at the end) etc. and attachments are attached to the sheet metal in a metallic connection after the sheet has been painted.
  • T-screw threaded bolts with sheet metal tabs protruding on both sides at the end
  • both a nut screwed onto the threaded bolt and a slid-on sleeve with a retracting counter-directed barb or projections can be used to fasten the attachment, such as the earth cable, to the sheet metal surface with sufficient pressure.
  • the latter can only be released without destroying or losing the contact pressure if special measures are provided, such as arranging the projections only in two opposite areas, so that by pressing the cover cap in a direction transverse to the connecting axis of the two areas, the projections in or can be disengaged from the thread.
  • cover cap which is preferably made of metal, is used both for covering and for later pressing on.
  • the still loose threaded bolt is first screwed into the cover cap, and then the entire unit is brought up to the sheet metal by means of a corresponding handling device and riveted or bolt-welded.
  • the use of a metallic cover cap has heretofore been seen as a disadvantage, since the arc could inadmissibly build up between the sheet metal and the facing end face of the cover cap instead of between the sheet metal and the facing end face of the threaded bolt.
  • the assembly time is greatly reduced, since the handling tool does not first take hold of the cover cap, after fastening the bolt and unscrewing the cover cap there must be a separation of the tool and cover cap, with the mounting nut subsequently being accommodated in the same or analog tool.
  • the cover cap is inserted into the handling tool, for example a motor-driven hexagon nut, only once at the beginning of the process, and the screwing forwards or backwards is then carried out therewith.
  • the end face and thus the flange of the cover cap facing the sheet metal is chosen so large in its outer dimensions that it is the same size or larger than the contact surface of the add-on part which later lies directly against the sheet metal.
  • the sleeve at the end of the earth cable to be fastened could have an annular area which protrudes against the sheet metal and has a defined inner and outer diameter, which is matched to the area around the bolt which is kept free of paint, while the overall dimensions of the eyelet may even be larger at the end of the ground cable.
  • the cover cap In order not to allow an arc between the sheet and the end face of the cover cap facing it when welding the threaded bolt, the cover cap is not screwed on so far in this process step that its cover surface is already at the same height as the end face of the threaded bolt facing the plate.
  • metal cover caps according to the invention there is a further advantage that the handling during stud welding is exclusively by contact with the The outer surface of the cover cap is sufficient, since the current flow from the metal cover cap via the welding bolt into the sheet metal is thus ensured, which was not possible with the disposable cover caps made of non-conductive material previously used, so that there is a grasping of the protruding from the cover cap Parts of the threaded bolt due to the electrically conductive arrangement was necessary.
  • the free-running end of the threaded stud is moved against the sheet metal and welded, while in the other case the welding stud has a widened, plate-shaped, round base at its end to be connected to the sheet.
  • This base is used so that despite the poses caused by the welding, there is as flat a contact surface as possible for the attachment of the add-on part, namely the ring-shaped end face of the base of the threaded bolt pointing away from the sheet metal, around the thread, while the arising Threats on the lower level, namely the contact surface of the opposite end face of the base and the outer surface of the sheet.
  • an undercut is incorporated into the annular edge of the inner circumference of the striking surface of the covering cap directed against the sheet metal, which absorbs the resulting poses if the welding stud does not have a widened base described above. If the welding stud has a base, the lower, thread-less and therefore thicker end of the welding stud is accommodated in the undercut.
  • the paint also applied to the cover cap is then damaged as little as possible and thus corresponds to the visual requirements when tightening or loosening the usually.
  • polygon e.g. Hexagon
  • formed outer circumference does not occur in the edge areas of the pressing surfaces, as is usual in the case of normal hexagon nuts, that is to say in the vicinity of the contact edges of the six pressing surfaces, but is offset toward the center of the pressing surfaces. This prevents the paint from jumping off at the edge areas of the individual pressing surfaces in the vicinity of their contact edges.
  • the cover cap - if it is made of steel - is protected against corrosion anyway by appropriate coating with nickel, copper or the like, the lacquer applied to the cover cap additionally improves the corrosion resistance.
  • protrusions are used that are arranged in segments, in order to enable the cover cap to be pushed on quickly instead of being screwed on, it must be made of metal or another material there - be elastically deformable in the transverse direction to the projections so that the projections which are in engagement with the thread become disengaged and, when the deformation force is removed, return to their original position in order to another pushing open, this time to fasten the cable harness, to offer the same old strength again.
  • the undercut on the inner circumference of the face of the cover cap does not have a rectangular cross-section from a bevel of this annular edge, but instead, e.g. has a rectangular cross section, the surfaces of which lie essentially parallel to the end face and the inner circumference of the opening of the cover cap. This prevents the liquid metal spraying away during stud welding from being thrown back by the bevel in the direction of the thread.
  • Fig. 1 basically shows the procedure, with a distinction being made as to whether the welding stud used has a widened base or not and whether the attachment can be placed over the free end of the welding stud or pushed sideways onto the welding stud.
  • the procedure is shown if the cover cap 6 is screwed onto the threaded bolt 3 in whole or in part from the beginning and is handled together with it during welding.
  • the procedure is shown in which the welding stud is handled alone until it is firmly connected to the sheet metal, and only then is the cover cap 6 applied.
  • the two parts can be non-location-specific beforehand and possibly. fully automatically connected to each other to the desired extent, for example screwed, so that only a single item has to be stored at the production site itself.
  • the functional unit 28, consisting of threaded bolt 3 and cover cap 6, is guided against the sheet metal 1, with which it is welded at a sufficiently small distance or by means of an arc using the stud welding method.
  • the majority of threaded bolts 3 with a widened base 5 are used, on which the end cap 7 of the cover cap 6 is seated.
  • the base 5 can easily be held on the circumference by means of holding tongs 27 during the welding process, so that the welding process takes place reliably between the base surface of the base 5 and the sheet metal 1.
  • gripping or picking up is also possible directly and exclusively on the hexagon socket 11 of the cover cap 6 by means of a tool such as a nut 26 during the approach and welding.
  • a tool such as a nut 26 during the approach and welding.
  • the threaded bolt 3 must protrude sufficiently far from the cover cap 6 during welding to only between the free thread surface of the threaded bolt 3 and the Sheet 1 to cause an arc.
  • the cover cap 6 is screwed in the direction against the sheet metal until the cover cap bears with its end face 7 on the counter surface 4.
  • this is the sheet metal surface surrounding the threaded bolt, in the case of a threaded bolt with a base 5 this is the line surface directed upward in FIG. 1.
  • the now lacquered cover cap 6 is first completely unscrewed from the threaded bolt 3 by means of a nut 26, then component 2 is placed over the threaded bolt 3 and the cover cap 6 is screwed on again until the add-on part 2 is pressed against the paint-free counterpart, either the base of the threaded bolt or the sheet metal, with the required nominal pressure.
  • the lower row of pictures shows the use of non-closed, for example U-shaped attachments that can be pushed laterally onto the threaded bolt. It is not necessary to completely unscrew the cap, it is sufficient to screw up by a distance that must at least correspond to the thickness of the attachment.
  • the cover cap After pushing the add-on part and resting it on the paint-free counter surface, the cover cap is screwed back in the direction of the sheet metal to fasten the add-on part. This saves valuable assembly time since only a shorter distance has to be screwed back and forth again.
  • Fig. 2 shows a cross-sectional view with a threaded bolt 3 without a widened base.
  • the threaded bolt 3 which is welded to the sheet 1, can be seen.
  • a melt 24 is formed briefly in the transition area between the two parts, and thereby also a projection 21 that arises in the annular edge between the threaded bolt 3 and the sheet metal 1.
  • the thread 13 of the threaded bolt 3 does not extend to the sheet-metal end 1, but ends one or a few mm beforehand.
  • the thread 13 of the threaded bolt 3 fits on an opposing external thread 16 or correspondingly shaped projections 17 in the inner circumference of the cover cap 6.
  • This consists of a nut part 9 in the middle, which is designed on the outside in a known manner as an external hexagon 11, and in Internal thread has the internal thread 16.
  • a widened flange 25 adjoins the nut part 9, the outer diameter of which determines the size of the end face 7 and thus the covered area on the counter surface.
  • the outer diameter of the covering end face 7 of the cover cap 6 is chosen to match the outer diameter of the support surface 20 of the attachment 2 so that the outer diameter of the end face 7 is the same or slightly larger is the outer diameter of the contact surface 20 of the attachment 2.
  • the cap part 10 connects with an approximately semicircular outer contour at the free end.
  • the cap part and nut part are preferably formed in one piece, but a multi-part design and simple connection by means of locking elements etc. is also possible.
  • the nut part 9 applying the contact pressure could be made of metal, while the only purpose of covering 10 would be plastic, etc.
  • the diameter of the blind hole 18 can be larger in the area of the cap part 10 than in the area of the nut part 9 or the internal thread 16.
  • this undercut 8 has no function.
  • the base 5 usually has a round outer circumference and in adaptation thereto, the flange 25 also has a round outer circumference at the lower end of the cover cap 6.
  • the melt 24 now occurs in the connection area between the lower end face of the base 5 in FIG. 3 and the sheet 1.
  • a two-part embodiment of the cover cap is also shown, in which a nose 28 as the outer circumference at the lower end of the cap part 10 is engaged behind a projection 29 on the inner circumference of the nut part.
  • FIGS. 4a to 4c show a cover cap 6, which on its inner circumference does not have a circumferential internal thread 6, but rather only at two opposite points of projections 17.
  • FIGS. 4a and 4b show a cross-sectional representation along the line IV-IV of FIG. 3.
  • Fig. 4a it can be seen how in the unloaded state of the cap 6, the projections 17 engage in the threads of the external thread 13 of the threaded bolt 3, and thus give the same positive locking effect as with a circumferential thread. The fine adjustment can still be made by screwing the cover cap 6 against the threaded bolt 3.
  • the projections 17 are designed accordingly, screwing on from the free end of the threaded bolt 3 can be avoided by, for example, pushing the cover cap with the projections 17 onto the bolt in the axial direction when the individual projections are sufficiently elastic, to snap over the slopes of the individual threads in the next.
  • an embodiment as shown in FIG. 4c is favorable, in which the individual projections 17 do not protrude to the bottom of the threads of the thread 13, but end beforehand and have a sufficient free length, interrupted by notches between the individual projections 17, have to allow a deflection and thus a pushing.
  • the solution with projections 17 is particularly interesting in the two-part design of the cover cap, since in this case the elasticity of a cap part made of plastic can be used, while nut part 9 and flange 25 consist of metal or less elastic, more dimensionally dimensioned plastic.

Claims (16)

  1. Procédé pour fixer en un point dépourvu de peinture, de manière électro-conductrice, une pièce (2) sur un support (4) au niveau d'une tige filetée (3) appartenant à une tôle (1) qui est par ailleurs mise en peinture, comportant les étapes de procédé suivantes:
    - fixation de la coiffe-bouchon (6) sur une tige filetée (3),
    - fixation de la tige filetée (3) sur une tôle (1)
    puis successivement:
    - application de la peinture (12) sur la coiffe-bouchon (6) et sur la tôle (1), la surface frontale (7) de la coiffe-bouchon (6) étant en contact avec le support (4),
    - éloignement de la coiffe-bouchon (6) du support (4),
    - interposition de la pièce (2) et
    - serrage de la pièce (2) sur le support (4) par serrage de la coiffe-bouchon (6) sur la pièce (2).
  2. Procédé selon la revendication 1, caractérisé par le fait que la fixation de la tige filetée (3) sur la tôle (1) a lieu par soudage de goujons .
  3. Procédé selon la revendication 1, caractérisé par le fait que la fixation de la tige filetée (3) sur la tôle (1) a lieu par rivetage.
  4. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la fixation ou le serrage de la coiffe-bouchon (6) sur la tige filetée (3) a lieu au moyen d'un filetage intérieur (16) dans la coiffe-bouchon (6).
  5. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la fixation ou le serrage de la coiffe-bouchon (6) sur la tige filetée (3) a lieu au moyen de saillies (17) qui s'étendent à l'intérieur du trou borgne (18) de la coiffe-bouchon (6) et viennent en prise avec possibilité de démontage avec le filetage (13) de la tige filetée (3).
  6. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la surface frontale (7), avant la fixation de la tige filetée (3) sur la tôle (1) est amenée à la même hauteur que le support (4).
  7. Coiffe-bouchon pour protéger la zone autour d'une tige filetée (3) et pour fixer une pièce (2), notamment conformément au procédé selon les revendications 1 à 6, comportant
    - un trou borgne (18),
    - une surface frontale (7) plane autour de l'orifice (19) du trou borgne (18) et
    - des saillies (17) qui s'étendent à partir des parois du trou borgne (18) à l'intérieur de celui-ci, transversalement à la direction longitudinale du trou borgne,
    caractérisé par le fait que
    a) la surface frontale (7) présente des dimensions extérieures égales ou supérieures à la surface d'appui (20) de la pièce (2) et
    b) un dégagement (8) est prévu sur le pourtour intérieur de l'orifice (19) du trou borgne (18), lequel dégagement est dimensionné de telle sorte que des bourrelets (21) provenant du soudage ou du rivetage de la tige filetée (3) ou du filetage (13) y trouvent place.
  8. Coiffe-bouchon selon la revendication 7, caractérisée par le fait que les saillies (17) sont un filetage intérieur (16) adapté au filetage extérieur (13).
  9. Coiffe-bouchon selon une des revendications 7 et 8, caractérisée par le fait que la coiffe (6) est formée d'une partie écrou (9) et d'une partie coiffe (10), la partie écrou (9) ayant extérieurement la forme d'un polygone régulier avec des surfaces de pression (15) contiguës.
  10. Coiffe-bouchon selon une des revendications précédentes 7 à 9, caractérisée par le fait que les surfaces de pression (15) de la surface extérieure de la partie écrou (9) sont inclinées en direction de leurs bords de contact (22).
  11. Coiffe-bouchon selon une des revendications précédentes 7 à 10, caractérisée par le fait que l'outil pour agir sur le contour extérieur de la partie écrou (9) est agencé de telle sorte que la transmission des efforts aux surfaces de pression (15) n'ait pas lieu dans la région des bords de contact (22) de celles-ci.
  12. Coiffe-bouchon selon une des revendications précédentes 7 à 11, caractérisée par le fait que le dégagement (8) a en section transversale une forme rectangulaire avec des arêtes sensiblement parallèles à la surface frontale (7) ou au pourtour intérieur du trou borgne (18)
  13. Coiffe-bouchon selon une des revendications précédentes 7 à 12, caractérisée par le fait que les saillies (17) sont disposées uniquement dans deux secteurs en vis-à-vis du pourtour du trou borgne (18) et que la coiffe-bouchon (6) peut être pressée élastiquement de manière telle que les saillies (17) et le filetage (13) soient amenées en ou hors prise, et que la partie coiffe (10) et la partie écrou (9) peuvent être encliquetées l'une dans l'autre et que les saillies (17) sont disposée dans la partie coiffe (10) en matière plastique.
  14. Coiffe-bouchon selon une des revendications précédentes 7 à 13, caractérisée par le fait que la coiffe-bouchon (6) est en métal.
  15. Coiffe-bouchon selon une des revendications précédentes 7 à 14, caractérisée par le fait que la coiffe-bouchon (6) présente une grande surface protégée.
  16. Coiffe-bouchon selon une des revendications précédentes 7 à 15, caractérisée par le fait que l'ouverture dans la pièce (2) recevant la tige filetée (3) n'est pas fermée au niveau de sa circonférence mais présente un passage suffisamment large pour que la pièce (2) puisse être amenée transversalement en contact avec la tige filetée (3).
EP93113510A 1993-08-24 1993-08-24 Couvercle Expired - Lifetime EP0640404B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT93113510T ATE159870T1 (de) 1993-08-24 1993-08-24 Abdeckkappe
ES93113510T ES2112362T3 (es) 1993-08-24 1993-08-24 Caperuza de proteccion.
DE59307648T DE59307648D1 (de) 1993-08-24 1993-08-24 Abdeckkappe
EP93113510A EP0640404B1 (fr) 1993-08-24 1993-08-24 Couvercle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93113510A EP0640404B1 (fr) 1993-08-24 1993-08-24 Couvercle

Publications (2)

Publication Number Publication Date
EP0640404A1 EP0640404A1 (fr) 1995-03-01
EP0640404B1 true EP0640404B1 (fr) 1997-11-05

Family

ID=8213201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113510A Expired - Lifetime EP0640404B1 (fr) 1993-08-24 1993-08-24 Couvercle

Country Status (4)

Country Link
EP (1) EP0640404B1 (fr)
AT (1) ATE159870T1 (fr)
DE (1) DE59307648D1 (fr)
ES (1) ES2112362T3 (fr)

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US5442133A (en) 1993-09-08 1995-08-15 Emhart Inc. Grounding stud/nut
GB2311662B (en) * 1996-03-29 2000-09-13 Sicame Electrical Dev Ltd Connector
DE19749383A1 (de) * 1997-11-07 1999-05-27 Trw Nelson Bolzenschweisstechn Kragenbolzen mit Verdrehsicherung
US6357110B1 (en) * 1998-12-31 2002-03-19 Emhart Inc. Stud electrical connection method
US6077096A (en) * 1999-03-10 2000-06-20 Emhart Inc. Weld stud
DE19937047A1 (de) * 1999-08-05 2001-02-08 Opel Adam Ag Für ein Kraftfahrzeug bestimmter Massekontakt
JP2004518250A (ja) 2001-01-10 2004-06-17 ニューフレイ リミテッド ライアビリティ カンパニー キャップ付電気接点スタッド及び電気接点の固定方法
US7156670B2 (en) 2001-01-10 2007-01-02 Newfrey Llc Electrical capped contact stud and method of fastening an electrical contact
US7788802B2 (en) 2001-01-10 2010-09-07 Newfrey Llc Method of fastening an electrical contact
DE102004050675B4 (de) * 2004-10-18 2015-05-07 Volkswagen Ag Befestigungsanordnung für wenigstens einen Kabelschuh an einem Schweißbolzen
DE102005013953A1 (de) * 2005-03-26 2006-09-28 Jungheinrich Ag Stromanschluß für eine Leistungs- und Steuereinheit eines batteriebetriebenen Flurförderzeugs
DE102006012761B4 (de) 2006-03-17 2019-03-21 Volkswagen Ag Befestigungsanordnung für wenigstens einen Kabelschuh an einem Schweißbolzen
DE102006056065B4 (de) 2006-11-20 2018-08-09 Newfrey Llc Vormontierte Kontaktiereinheit und Befestigungsanordnung
DE102007046690A1 (de) 2007-09-28 2009-04-02 Volkswagen Ag Anschweißbares Befestigungselement mit einem Kontaktbolzen für wenigstens einen elektrischen Kontakt
DE102015216259A1 (de) * 2015-08-26 2017-03-02 Bayerische Motoren Werke Aktiengesellschaft Masseanschluss für ein Aluminiumbau-, insbesondere Karosserieteil
DE102016104396A1 (de) 2016-03-10 2017-09-14 Newfrey Llc Elektrisches Massesystem und Masseverbindungs-Herstellungsverfahren
DE102016114512A1 (de) * 2016-08-05 2018-02-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Herstellung eines Batteriegehäuses
CN107214029B (zh) * 2017-08-07 2022-07-12 中国重汽集团济南动力有限公司 一种自吸式螺柱防护装置
CN111148889B (zh) * 2017-11-30 2022-03-18 Abb瑞士股份有限公司 密封装置、零件套件及方法
DE102019214348A1 (de) * 2019-09-20 2021-03-25 Zf Friedrichshafen Ag Anordnung zum Abdecken von Schraubenauflageflächen an einem Flansch eines Getriebegehäuses und Montage derselben

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US3922050A (en) * 1974-03-21 1975-11-25 Boeing Co Blind, shank expanding electrical terminal structure
US5207588A (en) * 1980-02-02 1993-05-04 Multifastener Corporation Electrical grounding stud
AU613958B2 (en) * 1987-09-18 1991-08-15 Nagoya Oilchemical Co., Ltd. A masking member
JPH0549114A (ja) * 1991-08-14 1993-02-26 Toshiba Corp 電気機器構造部材の導電結合部材とその接地処理方法

Also Published As

Publication number Publication date
DE59307648D1 (de) 1997-12-11
ES2112362T3 (es) 1998-04-01
ATE159870T1 (de) 1997-11-15
EP0640404A1 (fr) 1995-03-01

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