DE2610629A1 - Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities - Google Patents

Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities

Info

Publication number
DE2610629A1
DE2610629A1 DE19762610629 DE2610629A DE2610629A1 DE 2610629 A1 DE2610629 A1 DE 2610629A1 DE 19762610629 DE19762610629 DE 19762610629 DE 2610629 A DE2610629 A DE 2610629A DE 2610629 A1 DE2610629 A1 DE 2610629A1
Authority
DE
Germany
Prior art keywords
thread
screw
flanks
wave
locking screw
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.)
Pending
Application number
DE19762610629
Other languages
German (de)
Inventor
Guenter Schaefer
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
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19762610629 priority Critical patent/DE2610629A1/en
Publication of DE2610629A1 publication Critical patent/DE2610629A1/en
Pending legal-status Critical Current

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
    • 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
    • F16B39/30Locking exclusively by special shape of the screw-thread

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

A self-locking screw has an irregular thread form such as to oppose release of the screw. In one example the screw thread has flanks of wave form (1). The corresponding nut thread has a similar form and the threads have enough axial clearance to allow their peaks to ride over one another. On tightening the peaks of the one thread seat in the valleys of the other thread. In another example, the screw thread has flanks of saw teeth form. In this case the nut thread has a smooth flank. Release is opposed by the saw tooth flanks indenting the smooth flanks.

Description

Beschreibung der Patentanmeldung des Günter Schäfer, 664 MerzigDescription of the patent application by Günter Schäfer, 664 Merzig

titel Selbstsichernde Schraubverbindungen Anwendungsgebiet: Die Erfindung betrifft Schraubverbindungen, die durch besonders gefertigte Gewinde ohne weitere Zusatzgeräte gegen ungewolltes Lockern gesichert sind. Die Erfindung ist anwendbar in allen technischen Bereichen, in denen die Sicherung von Schraubverbindungen notwendig ist.title Self-locking screw connections Field of application: The invention relates to screw connections, which are easily made by specially manufactured threads Additional devices are secured against unintentional loosening. The invention is applicable in all technical areas in which the securing of screw connections is necessary is.

Zweck: Da Befestigungsschrauben nicht immer gleichmäßig belastet werden, müssen, um eine dauernde Verbindung zu gewährleisten, besondere Vorkehrungen gegen ein Lockern der Verbindung geschaffen werden.Purpose: Since fastening screws are not always evenly loaded, must, in order to guarantee a permanent connection, take special precautions against a loosening of the connection can be created.

Stand der Technik: Die erforderlichen Sicherungen werden bislang dadurch erreicht, daß form- und kraftschlüssige oder kombinierte Materialien verwendet werden, die regelmäßig als Zusatzgeräte Verwendung fin8en, zumindest ihre Grundlage nicht in der besonderen Gestaltung der Schraube selbst finden.State of the art: The necessary safeguards are thus far achieves that form-fitting and force-fitting or combined materials are used, which are regularly used as additional devices, at least not their basis in the special design of the screw itself.

Kritik des Standes der Technik: Die bislang bekannten Sicherungssysteme haben den Nachteil, daß die Sicherung nur durch zusätzlich anzubringende Geräte gewährleistet werden kann.Criticism of the state of the art: the security systems known so far have the disadvantage that the fuse only through additional devices to be attached can be guaranteed.

aufgaben Der Erfindung liegt die Aufgabe zugrunde, selbstsi chernde Schraubverbindungen ohne Zusatzgeräte, allein durch die besondere Gestaltung der Gewinde herzustellen.tasks The invention is based on the task of self-securing Screw connections without additional devices, simply through the special design of the To produce threads.

Lösung Die Aufgabe wird erfindungsmäßig dadurch gelöst, daß das Gewinde ungleichmäßig, d. h. mit unterschiedlicher Steighöhe geformt wird.Solution The object is achieved according to the invention in that the thread unevenly, d. H. is formed with different heights.

Weitere Ausgestaltung: Die Aufgabe kann erfindungsmäßig einmal dadurch gelöst werden, daß gemessen an der mittleren Steisöge die Gewindegänge wellerförmig ansteigen. (Lösung a) Die Ausgabe kann erfindungsmäßig auch dadurch gelöst werden, daß gemessen an der mittleren Steihöhe die Iewindegänge stufenförmig ansteigen0 Erzielbare Vorteile: Die mit der Erfindung erzielbaren Vorteile bestehen darin, daß allein durch die zweckentsprechende Gestaltung der Schrauben bzw. der Muttern erreicht werden kann, daß eine feste Schraubverbindung gewährleitet ist. Die besonderen Vorteile im Fall a) bestehen darin, daß die Schraubverbindung beliebig oft benutzt werden kann; allerdings muß hier die jeweilige Mutter auch das wellenförmig gestaltete Gewinde erhalten. Die Vorteile im Fall b) bestehen in der einfacheren technischen Herstellung, da hier nur die Schraube das stufenförmig gestaltete Gewinde erhält.Further embodiment: According to the invention, the task can be done once can be solved that measured on the middle riser the thread turns wavy increase. (Solution a) According to the invention, the output can also be solved by that measured at the mean height of the rock, the winds rise in steps0 Achievable Advantages: The advantages that can be achieved with the invention are that alone achieved by the appropriate design of the screws and nuts can be that a firm screw connection is guaranteed. The special advantages in case a) consist in that the screw connection can be used as often as desired can; however, here the respective mother must also have the wave-shaped design Thread received. The advantages in case b) are the simpler technical one Manufacture, because here only the screw receives the step-shaped thread.

Beschreibung der Ausführunwsçsbeispieleg In der beiliegenden Zeichnung ist das Aussehen einer Schraube für eine selbstsichernde Schraubverbindung zu sehen, und zwar im unteren Teil das Ausführungsbeispiel a), im oberen das Ausführungsbeispiel b). Bei einer wellenförmigen Gestaltung der Gewindeflächen ist zur Funktionsfähogkeit eine gleichartige Gestaltung der Gewindeflächen der zugehörigen Mutter erforderlich.Description of the embodiments in the accompanying drawing you can see the appearance of a screw for a self-locking screw connection, namely in the lower part the embodiment a), in the upper part the embodiment b). In the case of a wave-shaped design of the thread surfaces, functionality is essential a similar design of the thread surfaces of the associated nut is required.

Die Gewindeabttände müssen ein gewisses Spiel erlauben, damit ein Festdrehen möglich ist. Ist die Schraube fest angezogen, beruht die Sicherung darauf, daß jeweils eine Erhöhung in der Gewindefläche der Schraube einer Vertiefung der Gewindefläche der Mutter und umgekehrt entspricht. Beim Lösen werden die Erhöhungen auf einanderstoßen. Der dazu erforderliche erhöhte Kraftaufwand sichert aber auch die Festigkeit der Schraubverbindung. The thread spacing must allow a certain amount of play so that a Tightening is possible. If the screw is firmly tightened, the securing is based on that in each case an increase in the threaded surface of the screw is a recess of the Thread surface corresponds to the nut and vice versa. When loosening the increases clash. The increased effort required for this also secures the strength of the screw connection.

Im Ausführungsbeispiel b) beruht die Sicherung darauf, daß die Kanten der Gewindeflächen der Schrauben sich in die - gleichmäßig - gestalteten Gewindeflächen der Muttern eindrücken. In embodiment b) the security is based on the fact that the edges the thread surfaces of the screws into the - evenly - designed thread surfaces of the nuts.

LeerseiteBlank page

Claims (1)

Patentansprüche zur Patentanmeldung des Günter Schäfer Oberbegriff: Selbstsichernde Sctraubverbindungen für Befestigungs schrauben, Kennzeichnender Teil: dadurch gekennzeichnet, daß gemessen an der mittleren Steighöhe die Gewindeflächen ungleichmäßig ansteigen. Claims for patent application for Günter Schäfer generic term: Self-locking screw connections for fastening screws, characteristic Part: characterized in that measured at the mean rise height, the thread surfaces rise unevenly. Oberbekriff des UnteransPruches Teil bt Wie oben, Kennzeicnender Teilt dadurch gekennzeichnet, daß gemessen an der mittleren Steighöhe von Schraube und Mutter die Gewindegänge gleichmäßig wellenförmig ansteigen.Heading of the subclaim part bt As above, identifying the part characterized in that measured by the mean rise of screw and Nut rise the thread turns evenly in a wave-like manner. Oberbegriff des Unteranspruches Teil Bs Wie oben, Kennzeichnender Teil: dadurch gekennzeichnet, daß gemessen an der mittleren Steighöhe der Schraube die Gewindegänge gleichmäßig stufenförmig ansteigen.Preamble of the dependent claim Part Bs As above, more characteristic Part: characterized in that measured by the mean rise height of the screw the thread turns rise evenly in steps.
DE19762610629 1976-03-13 1976-03-13 Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities Pending DE2610629A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762610629 DE2610629A1 (en) 1976-03-13 1976-03-13 Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762610629 DE2610629A1 (en) 1976-03-13 1976-03-13 Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities

Publications (1)

Publication Number Publication Date
DE2610629A1 true DE2610629A1 (en) 1977-09-15

Family

ID=5972369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762610629 Pending DE2610629A1 (en) 1976-03-13 1976-03-13 Self locking screw with irregular thread form - has thread flanks which are of wave or saw tooth form engaging similar irregularities

Country Status (1)

Country Link
DE (1) DE2610629A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022918A1 (en) * 1990-07-19 1992-01-23 Lauer Peter Dipl Ing Fh Self-locking screw connection - has screw, threaded pin and nut and has radial ridges on sides of thread pitch
DE4137286A1 (en) * 1991-01-21 1992-08-13 Hengst Walter Gmbh & Co Kg Screw thread locking arrangement for oil filter or fuel filter housing - has one of two matching threads having packing projection which stands proud in axial direction of thread
RU2567353C1 (en) * 2014-07-11 2015-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Забайкальский государственный университет" (ФГБОУ ВПО "ЗабГУ") Vibration-proof threaded connection (versions)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022918A1 (en) * 1990-07-19 1992-01-23 Lauer Peter Dipl Ing Fh Self-locking screw connection - has screw, threaded pin and nut and has radial ridges on sides of thread pitch
DE4137286A1 (en) * 1991-01-21 1992-08-13 Hengst Walter Gmbh & Co Kg Screw thread locking arrangement for oil filter or fuel filter housing - has one of two matching threads having packing projection which stands proud in axial direction of thread
RU2567353C1 (en) * 2014-07-11 2015-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Забайкальский государственный университет" (ФГБОУ ВПО "ЗабГУ") Vibration-proof threaded connection (versions)

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