WO2000063567A1 - Clamping device with a capscrew and a spring washer and method for the production thereof - Google Patents

Clamping device with a capscrew and a spring washer and method for the production thereof Download PDF

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Publication number
WO2000063567A1
WO2000063567A1 PCT/DE2000/001048 DE0001048W WO0063567A1 WO 2000063567 A1 WO2000063567 A1 WO 2000063567A1 DE 0001048 W DE0001048 W DE 0001048W WO 0063567 A1 WO0063567 A1 WO 0063567A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
screw
plate spring
head
area
Prior art date
Application number
PCT/DE2000/001048
Other languages
German (de)
French (fr)
Inventor
Rolf Fadini
August KÄSTNER
Original Assignee
Christian Bauer Gmbh + Co.
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 Christian Bauer Gmbh + Co. filed Critical Christian Bauer Gmbh + Co.
Publication of WO2000063567A1 publication Critical patent/WO2000063567A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

Definitions

  • the invention relates to a clamping device with a cap screw and a plate spring according to the preamble of claim 1.
  • the invention is concerned with the problem of a first component on a second component serving as the base body by means of a cap screw engaging through an opening in the first component in a threaded bore of the second component under a defined - in the aforementioned known Setup of inaccessible - spring tension against the second component. If the first component fastened in this way has in its opening receiving the cap screw this with play, then by overcoming the pretensioning force pressing the first component against the second component, a relative movement of the first component with respect to the second component is possible.
  • REPLACEMENT BLADE (RULE 26)
  • the solution according to the invention is based on the idea of providing means on the cap screw which always and absolutely reliably define a defined clamping length when the screw for the plate spring is installed, regardless of the screwing torque applied in each case.
  • annular groove is provided in the annular collar, into which radial webs of the diaphragm spring can be molded as a means of preventing loss.
  • cap screw 1 is a cap screw in the assembled state in a section through the plate spring and the components connected by the cap screw,
  • FIG. 2 shows a top view of the plate spring of the head screw according to FIG. 1 in a state connected to the head screw with a head screw merely indicated
  • Fig. 3 shows a section through the plate spring according to Fig. 2 in a state not yet connected to the cap screw.
  • a cap screw 1 is screwed into a base body as a second component 2.
  • the cap screw 1 passes through an elongated hole 3 of a first component 4 fixed on the second component 2 with the cap screw 1.
  • the cap screw 1 is screwed into the second component 2 to a stop via a ring collar 5 provided below its head and projecting radially beyond its shaft.
  • the stop function of the annular collar 5 creates a clamping length that is always the same for the plate spring 6, that is to say the plate spring 6 can always exert the same, predefined spring force.
  • annular groove 7 is provided in the direct transition area between the collar 5 and the head of the cap screw 1. Radial webs 8 of the plate spring 6 engage in this annular groove 7 as a means of securing against loss.
  • the radial webs 8 are erected in the axial direction in the case of the still unassembled plate spring 6, as shown in FIG. 3. From this erected state, the radial webs 8 are only bent into a flatter state after assembly on the cap screw 1, as a result of which the plate spring 6 is axially fixed in the annular groove 7 via the radial webs 8.

Abstract

The invention relates to a clamping device for elastically fixing a first component to a second component (4 or 2) with a capscrew (1) and a spring washer (6) encompassing the screw shaft and facing the head of said screw from the side of the shaft of the capscrew (1), wherein the capscrew (1) is inserted through the first component (4) into the second component adjacent to the first component (4) and is fixed to the spring washer (6) adjacent to the first component (4) during fixing. The invention aims at providing a spring washer permanently exerting an even predetermined force once mounted. To this end, said device is characterized in that a shaft area adjacent to the head of the screw is configured as a radially projecting annular collar (5) intended for an axial stop on the second component (2); the thickness of the area of the spring washer (6) is smaller than the height of an area of the annular collar (5), which is located between the head of the screw and an area in the second component (2) serving as a stop for the spring washer (6) when the screwcap (1) has been screwed with the annular collar (5) on the second component (2).

Description

SPANNEINRICHTUNG MIT EINER KOPFSCHRAUBE UND EINER TELLERFEDER UND VERFAHREN ZU IHRER HERSTELLUNG TENSIONING DEVICE WITH A HEAD SCREW AND A DISC SPRING AND METHOD FOR THEIR PRODUCTION
Die Erfindung betrifft eine Spanneinrichtung mit einer Kopfschraube und einer Tellerfeder nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a clamping device with a cap screw and a plate spring according to the preamble of claim 1.
Bei einer solchen aus US 4,292,007 bekannten Einrichtung beschäftigt sich die Erfindung mit dem Problem, auf einem als Grundkörper dienenden zweiten Bauteil ein erstes Bauteil mittels einer durch eine Öffnung in dem ersten Bauteil in eine Gewindebohrung des zweiten Bauteils eingreifenden Kopfschraube unter definierter - bei jener vorgenannten bekannten Einrichtung nicht erreichbarer - Federvorspannung gegen das zweite Bauteil zu verspannen. Besitzt das derart befestigte erste Bauteil in seiner die Kopfschraube aufnehmenden Öffnung dieser gegenüber Spiel, so ist durch Überwindung der das erste Bauteil an das zweite Bauteil drückenden Vorspannkraft eine Relativbewegung des ersten Bauteiles gegenüber dem zweiten Bauteil möglich.In such a device known from US 4,292,007, the invention is concerned with the problem of a first component on a second component serving as the base body by means of a cap screw engaging through an opening in the first component in a threaded bore of the second component under a defined - in the aforementioned known Setup of inaccessible - spring tension against the second component. If the first component fastened in this way has in its opening receiving the cap screw this with play, then by overcoming the pretensioning force pressing the first component against the second component, a relative movement of the first component with respect to the second component is possible.
Eine Lösung dieses Problems zeigt eine gattungsgemäße Einrichtung mit den kennzeichnenden Merkmalen des Patentanspruchs 1 auf.A solution to this problem is shown by a generic device with the characterizing features of patent claim 1.
ERZSATZBLATT (REGEL26) Die erfindungsgemäße Lösung beruht auf dem Gedanken, an der Kopfschraube Mittel vorzusehen, die bei einer Montage der Schraube für die Tellerfeder stets und absolut sicher eine definierte Einspannlänge festlegen und zwar unabhängig von dem jeweils aufgebrachten Einschraubmoment.REPLACEMENT BLADE (RULE 26) The solution according to the invention is based on the idea of providing means on the cap screw which always and absolutely reliably define a defined clamping length when the screw for the plate spring is installed, regardless of the screwing torque applied in each case.
Um die Tellerfeder unverlierbar an der Kopfschraube vormontieren zu können, ist in dem Ringbund eine Ringnut vorgesehen, in die als Haltemittel Radialstege der Tellerfeder als Verliersicherung einformbar sind.In order to be able to preassemble the diaphragm spring captively on the cap screw, an annular groove is provided in the annular collar, into which radial webs of the diaphragm spring can be molded as a means of preventing loss.
Ein zweckmäßiges Verfahren zum Einformen als Radialstege ausgebildeter Haltemittel der Tellerfeder in die Ringnut an der Kopfschraube ist Gegenstand des Anspruchs 3.An expedient method for molding holding means of the plate spring designed as radial webs into the annular groove on the cap screw is the subject of claim 3.
Ein Ausführungsbeispiel ist in der Zeichnung dargestellt.An embodiment is shown in the drawing.
In dieser zeigenIn this show
Fig. 1 eine Kopfschraube in montiertem Zustand in einem Schnitt durch die Tellerfeder und die durch die Kopfschraube miteinander verbundenen Bauteile,1 is a cap screw in the assembled state in a section through the plate spring and the components connected by the cap screw,
Fig. 2 eine Draufsicht auf die Tellerfeder der Kopf- schraube nach Fig. 1 in einem mit der Kopfschraube verbundenen Zustand bei einer lediglich angedeuteten Kopfschraube,2 shows a top view of the plate spring of the head screw according to FIG. 1 in a state connected to the head screw with a head screw merely indicated,
Fig. 3 einen Schnitt durch die Tellerfeder nach Fig. 2 in einem noch nicht mit der Kopfschraube verbundenen Zustand.Fig. 3 shows a section through the plate spring according to Fig. 2 in a state not yet connected to the cap screw.
ERZSATZBLATT(REGEL26) Eine Kopfschraube 1 ist in einen Grundkörper als zweites Bauteil 2 eingeschraubt. Dabei durchgreift die Kopfschraube 1 ein Langloch 3 eines auf dem zweiten Bauteil 2 mit der Kopfschraube 1 fixierten ersten Bauteiles 4.REPLACEMENT BLADE (RULE 26) A cap screw 1 is screwed into a base body as a second component 2. The cap screw 1 passes through an elongated hole 3 of a first component 4 fixed on the second component 2 with the cap screw 1.
Die Kopfschraube 1 ist über einen unterhalb ihres Kopfes vorgesehenen, radial über deren Schaft überstehenden Ringbund 5 in das zweite Bauteil 2 auf Anschlag eingeschraubt.The cap screw 1 is screwed into the second component 2 to a stop via a ring collar 5 provided below its head and projecting radially beyond its shaft.
Zwischen dem ersten Bauteil 4 und dem Kopf der Kopfschraube 1 liegt eine Tellerfeder 6. Durch die Anschlagfunktion des Ringbundes 5 entsteht für die Tellerfeder 6 eine stets gleich große Einspannlänge, das heißt die Tellerfeder 6 kann eine stets gleiche, vordefinierte Federkraft entfalten.Between the first component 4 and the head of the cap screw 1 there is a plate spring 6. The stop function of the annular collar 5 creates a clamping length that is always the same for the plate spring 6, that is to say the plate spring 6 can always exert the same, predefined spring force.
In dem direkten Übergangsbereich zwischem Ringbund 5 und dem Kopf der Kopfschraube 1 ist eine Ringnut 7 vorgesehen. In diese Ringnut 7 greifen als Verliersicherung Radialstege 8 der Tellerfeder 6 ein.In the direct transition area between the collar 5 and the head of the cap screw 1, an annular groove 7 is provided. Radial webs 8 of the plate spring 6 engage in this annular groove 7 as a means of securing against loss.
Um die Tellerfeder 6 über den Ringbund 5 der Kopfschraube schieben zu können, sind die Radialstege 8 bei der noch un- montierten Tellerfeder 6, wie sie in Fig. 3 dargestellt ist, in Axialrichtung aufgerichtet. Aus diesem aufgerichteten Zustand werden die Radialstege 8 erst nach der Montage auf die Kopfschraube 1 in einen flacheren Zustand umgebogen, wodurch eine axiale Fixierung der Tellerfeder 6 über die Radialstege 8 in der Ringnut 7 gewährleistet ist.In order to be able to push the plate spring 6 over the ring collar 5 of the cap screw, the radial webs 8 are erected in the axial direction in the case of the still unassembled plate spring 6, as shown in FIG. 3. From this erected state, the radial webs 8 are only bent into a flatter state after assembly on the cap screw 1, as a result of which the plate spring 6 is axially fixed in the annular groove 7 via the radial webs 8.
* * * * ** * * * *
ERZSATZBLATT (REGEL 26) REPLACEMENT BLADE (RULE 26)

Claims

Ansprüche Expectations
1. Spanneinrichtung zum elastischen Verspannen eines ersten -mit einem zweiten Bauteil (4 bzw. 2) mit einer Kopfschraube (1) und einer von der Schaftseite der Kopfschraube (1) dem Kopf dieser Schraube zugewandten, den Schraubenschaft umgreifenden Tellerfeder (6), bei der die Kopfschraube (1) in Spannfunktion das erste Bauteil (4) durchgreifend in dem zweiten, an dem ersten anliegenden Bauteil bei an dem ersten Bauteil (4) anliegender Tellerfeder (6) verankert ist, gekennzeichne durch die Merkmale,1. Tensioning device for the elastic tensioning of a first plate spring (6) with a second component (4 or 2) with a cap screw (1) and a plate spring (6) facing the head of this screw from the shaft side of the cap screw (1) which is anchored by the cap screw (1) in the clamping function penetrating the first component (4) in the second plate spring (6) resting on the first component with the plate spring (6) resting on the first component (4), characterized by the features,
- ein an den Schraubenkopf angrenzender Schaftbereich ist als ein radial überstehender, für einen axialen Anschlag an .dem zweiten Bauteil (2) bestimmter Ringbund (5) ausgebildet,a shaft region adjacent to the screw head is designed as a radially projecting ring collar (5) intended for an axial stop on the second component (2),
- die Dicke des unterhalb des Schraubenkopfes liegenden Bereiches der Tellerfeder (6) ist geringer als die Höhe eines Bereiches des Ringbundes (5), der bei mit dem Ringbund- The thickness of the area below the screw head of the plate spring (6) is less than the height of an area of the ring collar (5), which with the ring collar
(5) auf Anschlag an das zweite Bauteil (2) angeschraubter Kopfschraube (1) zwischen Schraubenkopf und einem an dem zweiten Bauteil (2) als Widerlager für die Tellerfeder (6) dienenden Bereich liegt.(5) on the second component (2) screwed head screw (1) between the screw head and an area on the second component (2) serving as an abutment for the plate spring (6).
2. Spanneinrichtung nach Anspruch 1, dadurch gekennzeichne ,2. Clamping device according to claim 1, characterized in that
ERZSATZBLATT (REGEL 26) daß in einem an dem Schraubenkopf angrenzenden Bereich des Ringbundes (5) eine Ringnut (7) vorgesehen ist, in die Haltemittel (8) der Tellerfeder (6) als für diese dienende Verliersicherung eingreifen.REPLACEMENT BLADE (RULE 26) that an annular groove (7) is provided in an area of the ring collar (5) adjoining the screw head, into which holding means (8) of the plate spring (6) engage as a securing means against loss.
3. Verfahren zur Herstellung einer Spanneinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Tellerfeder (6) mit aus deren konvexer Oberfläche axial aufgerichteten Radialstegen (8) auf die Kopfschraube (1) bis zu deren Kopf aufgezogen wird und daß die axial aufgerichteten Radialstege (8) sodann zum Einführen in die am Kopf der Kopfschraube (1) vorgesehene Ringnut (7) in einen in die konvexe Oberfläche der Tellerfeder (6) eintauchenden Zustand dauerhaft umgeformt werden.3. A method for producing a tensioning device according to claim 2, characterized in that the plate spring (6) with from its convex surface axially erected radial webs (8) on the cap screw (1) is pulled up to its head and that the axially erected radial webs ( 8) then for insertion into the ring groove (7) provided on the head of the cap screw (1) into a state that is immersed in the convex surface of the plate spring (6).
* * ** * *
ERZSATZBLATT (REGEL 26) REPLACEMENT BLADE (RULE 26)
PCT/DE2000/001048 1999-04-15 2000-04-07 Clamping device with a capscrew and a spring washer and method for the production thereof WO2000063567A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19916989.6 1999-04-15
DE1999116989 DE19916989A1 (en) 1999-04-15 1999-04-15 Locking washer for bolt has inwardly-projecting tongues which cooperate with circumferential groove on bolt

Publications (1)

Publication Number Publication Date
WO2000063567A1 true WO2000063567A1 (en) 2000-10-26

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PCT/DE2000/001048 WO2000063567A1 (en) 1999-04-15 2000-04-07 Clamping device with a capscrew and a spring washer and method for the production thereof

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WO (1) WO2000063567A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20310304U1 (en) * 2003-07-04 2004-11-11 Ejot Gmbh & Co. Kg Fastening device for the elastic bracing of several components
DE102009023721A1 (en) 2009-06-03 2010-12-09 Neumayer Tekfor Holding Gmbh fastening device

Families Citing this family (8)

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EP1178163A1 (en) * 2000-08-02 2002-02-06 Gaetano Donatiello Improved support column for superelevated modular flooring
ES2189658B1 (en) * 2001-07-30 2004-10-16 Isofix, S.L. DEVICE FOR THE PROVISIONAL RETENTION OF A SCREW ASSEMBLY ON A GUIDE RAIL.
GB2381300A (en) * 2001-10-27 2003-04-30 Rolls Royce Plc Self-centring washer
US6705813B2 (en) * 2002-02-07 2004-03-16 Pierre P. Schwab Snap disc device
US20070274805A1 (en) * 2006-05-26 2007-11-29 Nebl David R Fastener and assembly therewith
EP2690294A1 (en) * 2012-07-24 2014-01-29 Vision Electric GmbH Washer, screw connection and method for tightening same
DE202015000344U1 (en) * 2015-01-15 2016-04-18 Grass Gmbh fastening device
EP4043739A1 (en) * 2021-02-12 2022-08-17 Illinois Tool Works Inc. Modular screw and method of manufacturing a modular screw

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US3181584A (en) * 1959-08-21 1965-05-04 George K Garrett Company Screw-and-washer pre-assembly
US4292007A (en) 1979-11-07 1981-09-29 Illinois Tool Works Inc. Fastener and washer assembly
DE3018014A1 (en) * 1980-05-10 1981-11-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Fastener for elements of differential heat expansion - consists of clamping screw and intermediate spring on low expansion element
JPH06313419A (en) * 1993-04-27 1994-11-08 Toopura:Kk Washer incorporated bolt and its manufacture

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DE1167600B (en) * 1955-09-27 1964-04-09 Illinois Tool Works Screw and nut locking
US4193434A (en) * 1978-08-10 1980-03-18 Illinois Tool Works Inc. Preassembled fastener unit for clamping plastic workpieces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181584A (en) * 1959-08-21 1965-05-04 George K Garrett Company Screw-and-washer pre-assembly
US4292007A (en) 1979-11-07 1981-09-29 Illinois Tool Works Inc. Fastener and washer assembly
DE3018014A1 (en) * 1980-05-10 1981-11-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Fastener for elements of differential heat expansion - consists of clamping screw and intermediate spring on low expansion element
JPH06313419A (en) * 1993-04-27 1994-11-08 Toopura:Kk Washer incorporated bolt and its manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02 31 March 1995 (1995-03-31) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20310304U1 (en) * 2003-07-04 2004-11-11 Ejot Gmbh & Co. Kg Fastening device for the elastic bracing of several components
DE102009023721A1 (en) 2009-06-03 2010-12-09 Neumayer Tekfor Holding Gmbh fastening device
WO2010139299A1 (en) 2009-06-03 2010-12-09 Neumayer Tekfor Holding Gmbh Fastening apparatus

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