CH665887A5 - SCREW WITH CAPTIVE WASHER. - Google Patents

SCREW WITH CAPTIVE WASHER. Download PDF

Info

Publication number
CH665887A5
CH665887A5 CH165385A CH165385A CH665887A5 CH 665887 A5 CH665887 A5 CH 665887A5 CH 165385 A CH165385 A CH 165385A CH 165385 A CH165385 A CH 165385A CH 665887 A5 CH665887 A5 CH 665887A5
Authority
CH
Switzerland
Prior art keywords
screw
washer
ring
washers
screws
Prior art date
Application number
CH165385A
Other languages
German (de)
Inventor
Carl Geisser
Original Assignee
Carl Geisser
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 Carl Geisser filed Critical Carl Geisser
Priority to CH165385A priority Critical patent/CH665887A5/en
Priority to DE19868608617 priority patent/DE8608617U1/en
Priority to IT2151786U priority patent/IT207011Z2/en
Priority to FR8605469A priority patent/FR2580346A1/en
Publication of CH665887A5 publication Critical patent/CH665887A5/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/001Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/002Measures against loss of bolts, nuts or pins

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Description

665 887 665 887

2 2

Claims (5)

PATENTANSPRÜCHEPATENT CLAIMS 1. Schraube mit unverlierbarer Unterlagsscheibe, dadurch gekennzeichnet, dass die Scheibe (2) durch einen gummielastischen Ring (3) auf der Schraub (1) gehalten ist.1. A screw with a captive washer, characterized in that the washer (2) is held on the screw (1) by a rubber-elastic ring (3). 2. Schraube nach Anspruch 1, dadurch gekennzeichnet, dass die Unterlagsscheibe (2) als gerippte Federscheibe ausgebildet ist.2. Screw according to claim 1, characterized in that the washer (2) is designed as a ribbed spring washer. 3. Schraube nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ring (3) ein O-Ring ist.3. Screw according to claim 1 or 2, characterized in that the ring (3) is an O-ring. 4. Schraube nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ring (3) einen vierkantigen Querschnitt hat.4. Screw according to claim 1 or 2, characterized in that the ring (3) has a square cross-section. 5. Schraube nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ring (3) aus einem Elastomer besteht.5. Screw according to one of claims 1 to 4, characterized in that the ring (3) consists of an elastomer. BESCHREIBUNG Unterlagsscheiben in Form von Sicherheits-Unterlags-scheiben, z.B. gerippte Federscheiben, werden unter anderem zur Schraubensicherung eingesetzt. Schrauben mit unverlierbarer Unterlagsscheibe sind bekannt. Bei diesen bekannten Schrauben hat der Schaft in der Nähe des Schraubenkopfes einen Durchmesser, der etwas geringer ist als der Gewinde-Aussendurchmesser. Die Unterlagsscheibe hat ein Innengewinde, dessen Innendurchmesse grösser als der Schaftdurchmesser in Kopfnähe ist. Die Unterlagsscheibe kann also über das Gewinde der Schraube aufgeschraubt werden und ist dann, wenn sie am Schraubenkopf anliegt, frei drehbar. Diese bekannten Schrauben mit unverlierbarer Unterlagsscheibe erfordern eine spezielle Schraubenform, eine Gewindeschneidoperation in der Unterlagsscheibe und ausserdem einen erheblichen Aufwand in der Vormontage. Sie sind also verhältnismässig teuer und werden deshalb, insbesondere bei der Handmontage, selten eingesetzt. Wenn jedoch Schraube und Unterlagsscheibe erst bei der Montage der Schraube zusammengefügt werden sollen, kommt es häufig vor, dass Unterlagsscheiben «vergessen» werden. Solche Schrauben können sich im Betrieb lockern und erhebliche Störungen verursachen.DESCRIPTION Washers in the form of safety washers, e.g. ribbed spring washers, are used, among other things, to secure screws. Screws with captive washers are known. In these known screws, the shank in the vicinity of the screw head has a diameter that is slightly smaller than the outside diameter of the thread. The washer has an internal thread, the internal diameter of which is larger than the shank diameter near the head. The washer can therefore be screwed onto the thread of the screw and is freely rotatable when it is in contact with the screw head. These known screws with non-detachable washers require a special screw shape, a thread-cutting operation in the washer and, in addition, a considerable effort in the pre-assembly. They are therefore relatively expensive and are therefore rarely used, especially in manual assembly. However, if the screw and washer are only to be assembled when the screw is installed, it often happens that the washers are «forgotten». Such screws can loosen during operation and cause significant disruption. ss Die Aufgabe der Erfindung besteht darin, eine Schraube mit unverlierbarer Unterlagsscheibe derart auszubilden, dass sie billig herstellbar und einfach vorzumontieren ist. Diese Aufgabe wird durch die kennzeichnenden Merkmale des ,0 Anspruchs 1 gelöst.The object of the invention is to design a screw with a captive washer in such a way that it can be produced cheaply and is easy to pre-assemble. This object is achieved by the characterizing features of claim 1. Durch den gummielastischen Ring ist die Vormontage der Unterlagsscheibe auf der Schraube sehr einfach, weil keine Schraubbewegung mehr erforderlich ist. Es können handelsübliche Schrauben und Unterlagsscheiben ohne Nachbearbeitung verwendet werden, was die Herstellungskosten der Kombination erheblich senkt. Ausserdem wirkt der Ring als zusätzliche Schraubensicherung und darüber hinaus als Dichtring, so dass die erfindungsgemässe Schraube vielseitig einsetzbar ist, insbesondere auch in Montageautomaten.The pre-assembly of the washer on the screw is very easy due to the rubber-elastic ring, because no screwing movement is required. Standard screws and washers can be used without post-processing, which significantly reduces the manufacturing cost of the combination. In addition, the ring acts as an additional screw lock and, moreover, as a sealing ring, so that the screw according to the invention can be used in a variety of ways, especially in automatic assembly machines. Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. Darin zeigt:An exemplary embodiment of the invention is described below with reference to the drawing. It shows: Fig. 1 eine Schraube mit Unterlagsscheibe und 25 Fig. 2 einen Teilschnitt der Schraube nach Fig. 1 in montiertem Zustand in vergrössertem Massstab.1 shows a screw with a washer, and FIG. 2 shows a partial section of the screw according to FIG. 1 in the assembled state on an enlarged scale. Die dargestellte Schraube 1 hat einen Kopf 4 und einen Schaft 5. Eine als gerippte Federscheibe 2 ausgebildete Unter-30 lagsscheibe ist durch einen O-Ring 3 aus einem Elastomer auf dem Schaft 5 gehalten. In Fig. 2 ist dargestellt, wie mit einer solchen Schraube eine Platte 6 auf einer Unterlage 7 festgespannt ist. Im montierten Zustand ist die Scheibe 2 flachgedrückt und der O-Ring 3 in den Spalt zwischen Schaft 5 und 35 Platte 6 sowie Scheibe 2 gequetscht. Er wirkt daher als Abdichtung und zusätzliche Schraubensicherung. Statt eines O-Ringes eignet sich auch ein elastomerer Ring mit vierkantigem Querschnitt.The screw 1 shown has a head 4 and a shank 5. A washer designed as a ribbed spring washer 2 is held on the shank 5 by an O-ring 3 made of an elastomer. 2 shows how a plate 6 is clamped on a base 7 with such a screw. In the assembled state, the disk 2 is flattened and the O-ring 3 is squeezed into the gap between the shaft 5 and the plate 6 and disk 2. It therefore acts as a seal and additional screw lock. Instead of an O-ring, an elastomeric ring with a square cross-section is also suitable. BB 1 Blatt Zeichnungen1 sheet of drawings
CH165385A 1985-04-16 1985-04-16 SCREW WITH CAPTIVE WASHER. CH665887A5 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH165385A CH665887A5 (en) 1985-04-16 1985-04-16 SCREW WITH CAPTIVE WASHER.
DE19868608617 DE8608617U1 (en) 1985-04-16 1986-03-29 Screw with captive washer
IT2151786U IT207011Z2 (en) 1985-04-16 1986-04-11 SCREW WITH STUD WASHER.
FR8605469A FR2580346A1 (en) 1985-04-16 1986-04-16 Screw with captive washer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH165385A CH665887A5 (en) 1985-04-16 1985-04-16 SCREW WITH CAPTIVE WASHER.

Publications (1)

Publication Number Publication Date
CH665887A5 true CH665887A5 (en) 1988-06-15

Family

ID=4215491

Family Applications (1)

Application Number Title Priority Date Filing Date
CH165385A CH665887A5 (en) 1985-04-16 1985-04-16 SCREW WITH CAPTIVE WASHER.

Country Status (4)

Country Link
CH (1) CH665887A5 (en)
DE (1) DE8608617U1 (en)
FR (1) FR2580346A1 (en)
IT (1) IT207011Z2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518768A (en) * 1995-02-03 1996-05-21 Nd Industries, Inc. Method and apparatus for making retaining elements
FR2838168B1 (en) * 2002-04-09 2006-07-07 Emery Sa IMPERFITABLE SCREW FOR SNOW SURF MOUNTING
US6902503B2 (en) * 2003-02-27 2005-06-07 Shimano Inc. Bicycle derailleur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2176411A (en) * 1938-09-15 1939-10-17 Philadelphia Steel And Wire Co Assembled lock washer and bolt, screw, or the like
DE1881801U (en) * 1963-06-25 1963-10-31 Theodor Rapp K G WASHER LOCK.
GB1478462A (en) * 1974-11-06 1977-06-29 Gkn Bolts Nuts Ltd Captive washer for fastener assembly
CA1031612A (en) * 1975-09-29 1978-05-23 Pierre C. Murray Sealing washer unit
GB2129085B (en) * 1982-10-26 1986-02-12 British Screw Co Ltd Fastener and seal combination

Also Published As

Publication number Publication date
DE8608617U1 (en) 1986-07-31
FR2580346A1 (en) 1986-10-17
IT8621517V0 (en) 1986-04-11
IT207011Z2 (en) 1987-10-26

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