FR2528134A3 - Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations - Google Patents

Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations Download PDF

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Publication number
FR2528134A3
FR2528134A3 FR8209756A FR8209756A FR2528134A3 FR 2528134 A3 FR2528134 A3 FR 2528134A3 FR 8209756 A FR8209756 A FR 8209756A FR 8209756 A FR8209756 A FR 8209756A FR 2528134 A3 FR2528134 A3 FR 2528134A3
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FR
France
Prior art keywords
screw
nut
contact surface
radially extending
corrugations
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
FR8209756A
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French (fr)
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FR2528134B3 (en
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.)
HAN CHEN CHANG
Original Assignee
HAN CHEN CHANG
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 HAN CHEN CHANG filed Critical HAN CHEN CHANG
Priority to FR8209756A priority Critical patent/FR2528134A3/en
Publication of FR2528134A3 publication Critical patent/FR2528134A3/en
Application granted granted Critical
Publication of FR2528134B3 publication Critical patent/FR2528134B3/fr
Granted legal-status Critical Current

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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
    • F16B39/282Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts

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

Abstract

The screw fastener (1) has radially extending corrugations or undulations (3) on the contact surface of the screw head, that is its underside, forming an anti-slip surface. A nut which may be used with the screw has corresponding corrugations or undulations on both sides. The anti-slip surfaces lock the screw and nut to the elements fastened by them, in a manner which prevents loosening under vibration. Such a screw can be used without a nut, in a threaded hole of a machine element. In this case, the machine element being secured by the screw is pref. provided with a corresponding anti-slip surface around the screw hole.

Description

La présente invention a trait à une vis d'arrêt originale et en particulier aux surfaces portantes de la tête d'une vis à métal et de l'écrou associé pour la fixation étroite d'éléments, ces surfaces présentant de nombreuses mâchoires d'arrêt sous forme d'ondulations. La structure est simple et dotée d'une bonne efficacité. The present invention relates to an original stop screw and in particular to the bearing surfaces of the head of a metal screw and of the associated nut for the close fixing of elements, these surfaces having numerous stop jaws. in the form of ripples. The structure is simple and has good efficiency.

En général, les surfaces portantes de la tête d'une vis à métal et de l'écrou associé sont lisses ; une fois fixée sur un élément subissant des vibrations mécaniques, la vis risque facilement de se desserrer et de tomber sous l'effet des vibrations, provoquant des dommages mécaniques et éventuellement un grave accident. Le remède courant consiste soit à interposer une rondelle élastique sous la tête de la vis, soit à ménager dans le corps de vis et dans l'écrou vissé un alésage dans lequel on insère une goupille fendue, soit à prévoir un écrou d'arrêt. Ces dernières années sont apparus des écrous comportant deux couches, l'une en métal et l'autre en "Nylon", que l'on réunit par rivetage pour éviter le détachement de l'écrou sous l'effet de vibrations. Toutefois, un tel écrou a une structure compliquée et est très onéreux.La présente invention a pour but principal de proposer une vis à métal présentant, sur les surfaces portantes de la tête de vis et de l'écrou associé, de nombreuses mâchoires d'arrêt sous forme d'ondulations, destinées à éviter le détachement sous l'effet de vibrations. In general, the bearing surfaces of the head of a machine screw and the associated nut are smooth; once fixed on an element subjected to mechanical vibrations, the screw can easily loosen and fall under the effect of vibrations, causing mechanical damage and possibly a serious accident. The common remedy is either to interpose an elastic washer under the head of the screw, or to provide in the screw body and in the screw nut a bore in which a split pin is inserted, or to provide a stop nut. In recent years, nuts have appeared comprising two layers, one made of metal and the other made of "Nylon", which are joined together by riveting to avoid detachment of the nut under the effect of vibrations. However, such a nut has a complicated structure and is very expensive. The main object of the present invention is to provide a metal screw having, on the bearing surfaces of the screw head and the associated nut, numerous jaws of stop in the form of ripples, intended to avoid detachment under the effect of vibrations.

Un autre but de l'invention est de proposer une vis d' arrêt que l'on puisse utiliser commodément et sans interposition d'une rondelle élastique ni insertion d'une goupille fendue. Another object of the invention is to propose a stop screw which can be used conveniently and without the interposition of an elastic washer or the insertion of a cotter pin.

Sur le dessin annexé
- la figure 1 représente en perspective une vis selon l'invention munie d'un écrou
- la figure 2 représente en perspective une vis selon l'invention sans écrou.
In the attached drawing
- Figure 1 shows in perspective a screw according to the invention provided with a nut
- Figure 2 shows in perspective a screw according to the invention without nut.

Selon le mode de réalisation illustré par la figure 1, il est prévu une vis 1 et un écrou 2. La surface portante de la vis 1, servant à fixer un élément, présente des mâchoires d'arrêt sous forme d'ondulations 3. L'écrou de vis 2 présente aussi des mâchoires d'arrêt sous forme d'ondulations 3 sur ses deux faces, afin que chacune de celles-ci puisse servir de face portante. Lorsqu'ilsassurent la fixation d'un élément de machine, une vis et un écrou de ce genre ne risquent pas de se détacher sous l'effet de vibrations. According to the embodiment illustrated in Figure 1, there is provided a screw 1 and a nut 2. The bearing surface of the screw 1, used to fix an element, has stop jaws in the form of corrugations 3. L 'screw nut 2 also has stop jaws in the form of corrugations 3 on its two faces, so that each of these can serve as a bearing face. When securing a machine element, such a screw and nut are unlikely to come loose due to vibration.

Sur la figure 2, la surface portante de la vis 1 présente encore des mâchoires d'arrêt sous- forme d'ondulations 3, ce qui permet d'utiliser la vis isolément ou avec un écrou pour assembler un élément de machine en assurant le même effet de résistance aux vibrations. In FIG. 2, the bearing surface of the screw 1 also has stop jaws in the form of corrugations 3, which makes it possible to use the screw individually or with a nut to assemble a machine element ensuring the same vibration resistance effect.

Quelle que soit la forme de la tête de la vis selon l'invention, pourvu que la surface de contact de cette tête soit perpendiculaire au corps de vis, les machoires en forme d'ondulations assurent la résistance au desserrement sous l'effet de vibrations. Whatever the shape of the head of the screw according to the invention, provided that the contact surface of this head is perpendicular to the body of the screw, the jaws in the form of corrugations ensure resistance to loosening under the effect of vibrations. .

En résumé, la structure selon l'invention est simple, commode à utiliser et dotée d'une bonne efficacité. Elle est pratique, originale et apporte un progrès dans l'industrie.  In summary, the structure according to the invention is simple, convenient to use and endowed with good efficiency. It is practical, original and brings progress in the industry.

Claims (3)

REVENDICATIONS 1. Vis d'arrêt caractérisée par la présence de mâchoires d'arrêt sous forme d'ondulations (3) sur les surfaces portantes de la vis (1) et de l'écrou associé (2). 1. Stop screw characterized by the presence of stop jaws in the form of corrugations (3) on the bearing surfaces of the screw (1) and the associated nut (2). 2. Vis d'arrêt selon la revendication 1, caractérisée en ce que les surfaces portantes de la tête de vis et de 1' écrou associé sont perpendiculaires au corps de vis et présentent des mâchoires d'arrêt sous forme d'ondulations (3). 2. Stop screw according to claim 1, characterized in that the bearing surfaces of the screw head and of the associated nut are perpendicular to the screw body and have stop jaws in the form of corrugations (3) . 3. Vis d'arrêt selon la revendication 1, caractérisée en ce que les deux faces de l'écrou présentent des mâchoires d'arrêt sous forme d'ondulations.  3. Stop screw according to claim 1, characterized in that the two faces of the nut have stop jaws in the form of undulations.
FR8209756A 1982-06-04 1982-06-04 Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations Granted FR2528134A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8209756A FR2528134A3 (en) 1982-06-04 1982-06-04 Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8209756A FR2528134A3 (en) 1982-06-04 1982-06-04 Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations

Publications (2)

Publication Number Publication Date
FR2528134A3 true FR2528134A3 (en) 1983-12-09
FR2528134B3 FR2528134B3 (en) 1984-04-20

Family

ID=9274642

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8209756A Granted FR2528134A3 (en) 1982-06-04 1982-06-04 Screw threaded fastener with nut - has anti-slip contact surface formed by radially extending corrugations

Country Status (1)

Country Link
FR (1) FR2528134A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730753A1 (en) * 1995-02-22 1996-08-23 Raymond Lebraut Screw and plate system for fixing roofing and cladding components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730753A1 (en) * 1995-02-22 1996-08-23 Raymond Lebraut Screw and plate system for fixing roofing and cladding components

Also Published As

Publication number Publication date
FR2528134B3 (en) 1984-04-20

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