FR2675552A1 - Nut for adjusting the useful length of a screw and method for manufacturing it - Google Patents
Nut for adjusting the useful length of a screw and method for manufacturing it Download PDFInfo
- Publication number
- FR2675552A1 FR2675552A1 FR9104918A FR9104918A FR2675552A1 FR 2675552 A1 FR2675552 A1 FR 2675552A1 FR 9104918 A FR9104918 A FR 9104918A FR 9104918 A FR9104918 A FR 9104918A FR 2675552 A1 FR2675552 A1 FR 2675552A1
- Authority
- FR
- France
- Prior art keywords
- nut
- wings
- screw
- adjusting
- threaded rod
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims abstract 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 241000577457 Lestidae Species 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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
- F16B39/28—Locking 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
- F16B39/284—Locking by means of elastic deformation
- F16B39/286—Locking by means of elastic deformation caused by saw cuts
-
- 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
- F16B33/00—Features common to bolt and nut
-
- 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Description
ECROU DE REGLAGE DE LA LONGUEUR UTILE D'UNE VIS ET SON
PROCEDE DE FABRICATION.NUT FOR ADJUSTING THE USEFUL LENGTH OF A SCREW AND SOUND
MANUFACTURING PROCESS.
La présente invention concerne un écrou servant à régler la longueur utile d'une vis. The present invention relates to a nut for adjusting the useful length of a screw.
L'invention sera décrite dans le cas de son application particulière au réglage de la longueur de la tige filetée qui sert à fixer un appareil, tel qu'une caméra, sur la plate-forme d'un support, mais il va de soi qu'elle n'est pas limitée à cette seule application. The invention will be described in the case of its particular application to adjusting the length of the threaded rod which is used to fix an apparatus, such as a camera, on the platform of a support, but it goes without saying that 'it is not limited to this single application.
Une telle tige filetée se visse généralement dans un trou borgne taraudé prévu sur la face inférieure de la caméra et est manoeuvrable au moyen d'un bouton moleté. En utilisation , la tige filetée est vissée dans la plateforme jusqu'à la faire dépasser au dessus de celle-ci d'une longueur légèrement inférieure à la profondeur du trou de fixation de la caméra. Such a threaded rod is generally screwed into a tapped blind hole provided on the underside of the camera and is operable by means of a knurled button. In use, the threaded rod is screwed into the platform until it protrudes above it a length slightly less than the depth of the camera mounting hole.
Toutefois, avec un tel système de fixation, rien n'empêche que la tige filetée soit intempestivement vissée au-delà de sa position de réglage. Si la longueur de la portion de tige filetée faisant saillie au-dessus de la plate-forme devient supérieure à la profondeur du trou taraudé, on risque d'endommager ce dernier ainsi que la tige filetée. However, with such a fastening system, nothing prevents the threaded rod from being inadvertently screwed beyond its adjustment position. If the length of the portion of the threaded rod protruding above the platform becomes greater than the depth of the threaded hole, there is a risk of damaging the latter and the threaded rod.
L'invention vise à remédier à cet inconvénient et elle utilise à cet effet un écrou pourvu d'un filetage intérieur dont le pas correspond à celui de la tige filetée, et d'une fente périphérique traversant l'écrou sur toute l'épaisseur de sa paroi latérale et s'étendant sur une fraction de la périphérie de l'écrou, définissant ainsi deux ailes parallèles semi-annulaires, au moins l'une desdites ailes étant déformée de façon permanente lors de la fabrication, afin de modifier sa distance par rapport à l'autre aile. The invention aims to remedy this drawback and it uses for this purpose a nut provided with an internal thread whose pitch corresponds to that of the threaded rod, and a peripheral slot passing through the nut over the entire thickness of its side wall and extending over a fraction of the periphery of the nut, thus defining two semi-annular parallel wings, at least one of said wings being permanently deformed during manufacture, in order to modify its distance by compared to the other wing.
Les ailes peuvent être soit rapprochées sous l'action d'un effort de compression axial, soit écartées. Dans un cas comme dans l'autre, le filetage de l'écrou est déformé et ne correspond plus exactement à celui de la tige filetée. L'écrou devient alors auto-serreur : il peut être tourné à la main, mais il oppose une grande résistance lorsqu'on tente de serrer ou de desserer la tige filetée. The wings can either be brought together under the action of an axial compression force, or separated. In either case, the thread of the nut is deformed and no longer exactly matches that of the threaded rod. The nut then becomes self-locking: it can be turned by hand, but it offers great resistance when trying to tighten or loosen the threaded rod.
L'invention concerne également un procédé de fabrication de l'écrou, qui consiste à former sur l'écrou une fente périphérique qui le traverse sur toute l'épaisseur de sa paroi latérale et qui s'étend sur une fraction de sa périphérie, puis à déformer au moins l'une des deux ailes ainsi formées de part et d'autre de la fente, afin de modifier sa distance par rapport à l'autre aile. The invention also relates to a method of manufacturing the nut, which consists in forming on the nut a peripheral slot which passes through it over the entire thickness of its side wall and which extends over a fraction of its periphery, then deforming at least one of the two wings thus formed on either side of the slot, in order to modify its distance from the other wing.
Un mode de réalisation de l'invention sera décrit à présent en regard du dessin annexé dans lequel
la figure 1 est une vue en perspective d'un écrou selon l'invention, à ailes rapprochées
la figure 2 est une vue en coupe suivant la ligne II II de la figure 1
la figure 3 est une vue en coupe d'une variante de réalisation d'écrou à ailes écartées
la figure 4 est une vue en coupe axiale d'une plateforme de caméra munie de l'écrou de la figure 1.An embodiment of the invention will now be described with reference to the appended drawing in which
Figure 1 is a perspective view of a nut according to the invention, with close wings
Figure 2 is a sectional view along line II II of Figure 1
Figure 3 is a sectional view of an alternative embodiment of nut with spread wings
FIG. 4 is a view in axial section of a camera platform provided with the nut of FIG. 1.
Avec référence aux figures 1 à 3, l'écrou 10 selon l'invention a une forme cylindrique plate et est pourvu d1un moletage 12 sur sa paroi extérieure pour avoir une meilleure prise lorsqu'on veut le faire tourner. With reference to Figures 1 to 3, the nut 10 according to the invention has a flat cylindrical shape and is provided with a knurling 12 on its outer wall to have a better grip when it is desired to rotate it.
Toutefois, il peut aussi bien être hexagonal, le moletage devenant inutile dans ce cas.However, it can also be hexagonal, knurling becoming unnecessary in this case.
L'écrou présente sur sa paroi intérieure un taraudage 14 dont le pas de vis correspond à celui de la vis 16 (figure 4) sur laquelle il doit être vissé. The nut has on its inner wall a thread 14 whose thread pitch corresponds to that of the screw 16 (Figure 4) on which it must be screwed.
Selon l'invention, l'écrou est pourvu d'une fente 18 qui s'étend sur une partie de sa périphérie, de préférence égale à au moins 1800 et qui traverse sa paroi sur toute son épaisseur. La fente est située sensiblement à mihauteur de l'écrou et définit sur celui-ci deux ailes parallèles 20, 22 de forme sensiblement semi-annulaire. According to the invention, the nut is provided with a slot 18 which extends over a part of its periphery, preferably equal to at least 1800 and which passes through its wall over its entire thickness. The slot is located substantially halfway up the nut and defines thereon two parallel wings 20, 22 of substantially semi-annular shape.
L'écrou peut être fabriqué, de façon usuelle par emboutissage ou par moulage, puis usinage de la fente. The nut can be manufactured, in the usual way by stamping or by molding, then machining of the slot.
Lors de la fabrication, on soumet les deux ailes 20, 22 ou au moins l'une d'elles à une déformation permanente qui modifie leur écartement. Dans le mode de réalisation des figures 1 et 2, les ailes sont soumises à un effort de compression : les ailes sont légèrement rapprochées l'une de l'autre et le filetage 14 qu qu'elles portent est lui aussi déformé. Il en résulte qu'il se produit un très faible décalage du filetage de l'écrou par rapport à celui de la vis 16. Ceci se traduit par une résistance lors du vissage de l'écrou sur la vis. During manufacture, the two wings 20, 22 or at least one of them is subjected to a permanent deformation which modifies their spacing. In the embodiment of Figures 1 and 2, the wings are subjected to a compressive force: the wings are slightly close to each other and the thread 14 that they carry is also deformed. As a result, there is a very small offset of the thread of the nut relative to that of the screw 16. This results in resistance when the nut is screwed onto the screw.
On obtient le même effet en écartant les ailes l'une de l'autre, comme le montre la figure 3. The same effect is obtained by moving the wings apart from one another, as shown in Figure 3.
La figure 4 montre une application particulière de l'écrou 10 à la fixation d'une caméra 24 sur la plateforme 26 d'un support 28. La caméra présente sur sa face inférieure un trou borgne taraudé 30. FIG. 4 shows a particular application of the nut 10 to the fixing of a camera 24 on the platform 26 of a support 28. The camera has on its underside a tapped blind hole 30.
La plate-forme est pourvue d'une encoche allongée 32 fermée à un extrémité et ouverte à l'autre extrémité, de manière à pouvoir y faire glisser une vis 16 munie de l'écrou 10 selon l'invention, et d'un bouton de serrage 34. L'écrou est positionné le long de la vis de manière que, lorsque celle-ci est en place dans l'encoche 32, la longueur de la portion de vis qui fait saillie au-dessus de la plate-forme soit inférieure à la profondeur du trou 30. Dès lors, en raison de l'effet d'auto-serrage de l'écrou, la distance entre celui-ci et l'extrémité de la vis ne varie pas, même en forçant la vis par sa tête 36. The platform is provided with an elongated notch 32 closed at one end and open at the other end, so as to be able to slide therein a screw 16 provided with the nut 10 according to the invention, and a button tightening 34. The nut is positioned along the screw so that, when the latter is in place in the notch 32, the length of the portion of the screw which projects above the platform is less than the depth of hole 30. Therefore, due to the self-tightening effect of the nut, the distance between it and the end of the screw does not vary, even when forcing the screw by his head 36.
L'écrou selon l'invention est utilisable dans tous les cas où l'on souhaite maintenir invariable la distance entre lui et l'extrémité d'une tige filetée sur laquelle il est visse. The nut according to the invention can be used in all cases where it is desired to maintain invariable the distance between it and the end of a threaded rod on which it is screwed.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9104918A FR2675552A1 (en) | 1991-04-22 | 1991-04-22 | Nut for adjusting the useful length of a screw and method for manufacturing it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9104918A FR2675552A1 (en) | 1991-04-22 | 1991-04-22 | Nut for adjusting the useful length of a screw and method for manufacturing it |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2675552A1 true FR2675552A1 (en) | 1992-10-23 |
Family
ID=9412104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9104918A Pending FR2675552A1 (en) | 1991-04-22 | 1991-04-22 | Nut for adjusting the useful length of a screw and method for manufacturing it |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2675552A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1298333A1 (en) * | 2001-10-01 | 2003-04-02 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Self-locking rigidly coupling nut for a screwed joint |
-
1991
- 1991-04-22 FR FR9104918A patent/FR2675552A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1298333A1 (en) * | 2001-10-01 | 2003-04-02 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Self-locking rigidly coupling nut for a screwed joint |
DE10148473A1 (en) * | 2001-10-01 | 2003-04-17 | Knorr Bremse Systeme | Non-positive self-locking nut for a screw connection |
DE10148473B4 (en) * | 2001-10-01 | 2008-01-24 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Positive self-locking nut for a screw connection |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2659163A1 (en) | SHOULDER SUPPORT FOR VIOLIN. | |
FR2505744A1 (en) | CASTER WITH LOCKING DEVICE, ESPECIALLY FOR HOSPITAL BEDS | |
FR2692516A1 (en) | Cutting device for a chain motor saw. | |
EP0340161A1 (en) | Elastic hinge for spectacle frame | |
FR3027975A1 (en) | DEVICE AND METHOD FOR MOUNTING AND ORIENTING A SENSOR ON A SUPPORT | |
EP0275793A1 (en) | Device to detachably attach a cutting insert to a tool holder | |
EP0029475A1 (en) | Device for fastening or locking an object onto a shank | |
WO2009112696A2 (en) | Gauge for mounting a screw | |
FR2539202A1 (en) | VALVE, IN PARTICULAR THERMOSTATIC VALVE FOR HOT WATER RADIATORS | |
FR2583837A1 (en) | Spacer bush for window fittings | |
FR2675552A1 (en) | Nut for adjusting the useful length of a screw and method for manufacturing it | |
FR2518195A1 (en) | MOUNTING DEVICE MOUNTED ON THE EDGE OF A PANEL, AND ASSEMBLING PANELS OBTAINED USING THE SAME | |
FR2772820A1 (en) | Motor vehicle lock striker plate fixing procedure | |
FR2651703A1 (en) | Device for micrometric adjustment of a cutting tip (insert) on a tool holder (tool post) | |
EP1442833B1 (en) | Clamping crampon and method for clamping a workpiece with such clamping crampons | |
WO1998026325A1 (en) | Hinge device | |
FR2674308A1 (en) | ROTATING HANDLE FOR THE RADIATOR ADJUSTMENT VALVE. | |
EP0428426B1 (en) | Adjustable mounting flange for proximity detector | |
FR2678538A1 (en) | Screwing tool | |
FR2516991A1 (en) | Metallic connector for two components - has common pin fitting transversely through bush inserts with locking screw | |
FR2624780A1 (en) | Device for tensioning a handsaw blade and for locking in position and the saw bow implementing the device | |
FR2879836A1 (en) | Wire grounding device for aluminum casing, has stud comprising flat nut integrated with outer upper rod which receives cap nut that permit to clasp part of terminal of wire between nuts when stud is anchored inn blind hole of casing | |
FR2604381A1 (en) | Mounting machine slideways and machine equipped with slideways thus mounted | |
WO2006097891A1 (en) | Reversible fixing element | |
FR2462224A1 (en) | REPORTED TOOL FOR BORING WORK AND IN PARTICULAR FOR BORING BARS |