FR2595125A1 - Anti-theft device for a screw, bolt or nut - Google Patents
Anti-theft device for a screw, bolt or nut Download PDFInfo
- Publication number
- FR2595125A1 FR2595125A1 FR8603119A FR8603119A FR2595125A1 FR 2595125 A1 FR2595125 A1 FR 2595125A1 FR 8603119 A FR8603119 A FR 8603119A FR 8603119 A FR8603119 A FR 8603119A FR 2595125 A1 FR2595125 A1 FR 2595125A1
- Authority
- FR
- France
- Prior art keywords
- screw
- nut
- bolt
- cone
- protected
- 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
- 230000000295 complement effect Effects 0.000 claims abstract description 4
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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
La présente invention concerne un dispositif empêchant le dévissage d'un écrou, d'un boulon ou d'une vis, quelle que soit sa forme, en venant coiffer celui-ci et en rendant impossible l'utilisation d'une clef standard. The present invention relates to a device preventing the unscrewing of a nut, bolt or screw, whatever its shape, by covering it and making it impossible to use a standard wrench.
Cette fonction est traditionnellement effectuée en rempla çant purement et simplement la vis ou l'écrou existant par un dispositif anti-vol. Ceci implique, pour les vendeurs, un stock considérable. This function is traditionally performed by simply replacing the existing screw or nut with an anti-theft device. This implies, for sellers, a considerable stock.
Les dispositifs dits "universel" sont, quant à eux, d'une efficacité toute relative ou d'un prix élevé. The so-called "universal" devices are quite relative in effectiveness or at a high price.
Le dispositif selon l'invention comporte un capuchon extérieur (1) qui vient coiffer la tête de la vis ou de l'écrou à protèger. Ce capuchon se termine, du côté de son ouverture, par un cône intérieur. Ce cône a une pente très faible, de l'ordre de 80 par rapport à son axe. La distance de ce cone par rapport à la vis à protèger est suffisante pour permettre à une bille traitée (5) de venir se coincer entre les deux. Une fois la bille en position entre le cone et la vis à protèger, il devient impossible d'enlever le capuchon en essayant de l'arracher, car le coincement de la bille est proportionnel à l'effort de traction. The device according to the invention comprises an outer cap (1) which covers the head of the screw or nut to be protected. This cap ends, on the side of its opening, by an internal cone. This cone has a very slight slope, of the order of 80 relative to its axis. The distance of this cone from the screw to be protected is sufficient to allow a treated ball (5) to come to be caught between the two. Once the ball in position between the cone and the screw to be protected, it becomes impossible to remove the cap while trying to tear it off, because the jamming of the ball is proportional to the tensile force.
Dans l'axe de cette bille, sur un plan parallèle à l'axe du capuchon, se trouve le système permettant d'amener la bille en contact avec le cône du capuchon ou, au contraire, de l'éloigner, pour permettre d'enlever le capuchon sans difficulté. In the axis of this ball, on a plane parallel to the axis of the cap, is the system for bringing the ball in contact with the cone of the cap or, on the contrary, to move it away, to allow remove the cap without difficulty.
Ce système comprend un porte-bille (4) dans lequel vient se visser une vis (2) immobilisée en translation par un clips (3) qui vient se loger dans le capuchon extérieur. En tournant la vis dans un sens ou dans l'autre, on approche ou on éloigne la bille du cne du capuchon extérieur. La tête de cette vis a une forme spéciale avec plusieurs cannelures disposées selon un code bien précis nécessitant, pour sa rotation, une clef spéciale de forme complémentaire. This system comprises a ball holder (4) into which is screwed a screw (2) immobilized in translation by a clip (3) which is housed in the outer cap. By turning the screw in one direction or the other, we approach or move the ball away from the cone of the outer cap. The head of this screw has a special shape with several grooves arranged according to a very precise code requiring, for its rotation, a special key of complementary shape.
La figure 2 représente en coupe le dispositif selon 1 'inven- tion. FIG. 2 shows in section the device according to the invention.
La figure 1 représente en coupe une variante de ce dispositif. Figure 1 shows in section a variant of this device.
Celui-ci est composé d'une douille extérieure (6) qui vient coiffer la tête de la vis ou de l'écrou à protèger. Cette douille se termine d'un côté par un cône intérieur et de l'autre par un taraudage. Ce cône a une pente très faible, de l'ordre de 80 par rapport à son axe. La distance entre le cône et la vis à protèger est suffisante pour permettre à des billes traitées (7) de venir se coincer entre les deux. De l'autre côté, dans le taraudage, vient se visser un bouchon fileté (10) qui permet, par l'intermédiaire d'un porte-billes (8), d'approcher ou d'éloigner les billes traitées du cône de la douille. Ce porte-billes, de forme identique à la vis à protèger, maintient les billes en place, et est rendu solidaire, en translation uniquement, du bouchon fileté par l'intermédiaire d'un rivet (9). La tête de ce rivet vient se loger dans un lamage et sert de détrompeur pour la clef. This consists of an outer sleeve (6) which covers the head of the screw or nut to be protected. This sleeve ends on one side with an inner cone and on the other with a thread. This cone has a very slight slope, of the order of 80 relative to its axis. The distance between the cone and the screw to be protected is sufficient to allow treated balls (7) to get caught between the two. On the other side, in the thread, is screwed a threaded plug (10) which allows, through a ball holder (8), to approach or move the treated balls from the cone of the socket. This ball holder, identical in shape to the screw to be protected, keeps the balls in place, and is made integral, in translation only, with the threaded plug by means of a rivet (9). The head of this rivet is housed in a counterbore and serves as a key for the key.
Le lamage dans le bouchon fileté comprend sur son diamètre un certain nombre de cannelures disposées de façon très précise et nécessitant, pour le vissage et le dévissage de celui-ci, une clef spéciale à cannelures complémentaires. The counterbore in the threaded plug comprises on its diameter a number of grooves arranged very precisely and requiring, for screwing and unscrewing thereof, a special key with complementary grooves.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8603119A FR2595125A1 (en) | 1986-03-03 | 1986-03-03 | Anti-theft device for a screw, bolt or nut |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8603119A FR2595125A1 (en) | 1986-03-03 | 1986-03-03 | Anti-theft device for a screw, bolt or nut |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2595125A1 true FR2595125A1 (en) | 1987-09-04 |
Family
ID=9332799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8603119A Pending FR2595125A1 (en) | 1986-03-03 | 1986-03-03 | Anti-theft device for a screw, bolt or nut |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2595125A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0305231A1 (en) * | 1987-07-22 | 1989-03-01 | Wiener, Bernadette | Device to prevent the loosening of a nut, a screw or a bolt, to be used in particular as a protective device against the theft of a wheel of a motor vehicle |
US5059076A (en) * | 1990-06-28 | 1991-10-22 | Aisan Kogyo Kabushiki Kaisha | Readjustment preventing structure for adjustment member |
US5082409A (en) * | 1990-10-26 | 1992-01-21 | Aluminum Company Of America | Vehicular lug nut cover and clip |
US5104274A (en) * | 1989-11-07 | 1992-04-14 | Kyo-Ei Industrial Corporation | Cap having antitheft lock for fastening member |
US6238158B1 (en) | 1999-03-22 | 2001-05-29 | Alcoa Inc. | Hub retention for lug nut covers |
ES2296566A1 (en) * | 2007-11-06 | 2008-04-16 | Luis J. Penalonga Teijeiro | Anti-vandal screw has cylindrical outer part, which uses key to allow handling, and contour built-washer is also provided |
CN104047950A (en) * | 2014-07-01 | 2014-09-17 | 宁波浩泰电力工程设备有限公司 | Automotive anti-theft bolt |
CN104074855A (en) * | 2014-07-01 | 2014-10-01 | 宁波浩泰电力工程设备有限公司 | Automobile anti-theft bolt |
-
1986
- 1986-03-03 FR FR8603119A patent/FR2595125A1/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0305231A1 (en) * | 1987-07-22 | 1989-03-01 | Wiener, Bernadette | Device to prevent the loosening of a nut, a screw or a bolt, to be used in particular as a protective device against the theft of a wheel of a motor vehicle |
US4880344A (en) * | 1987-07-22 | 1989-11-14 | Max Henry | Device for preventing loosening of a member |
US5104274A (en) * | 1989-11-07 | 1992-04-14 | Kyo-Ei Industrial Corporation | Cap having antitheft lock for fastening member |
US5059076A (en) * | 1990-06-28 | 1991-10-22 | Aisan Kogyo Kabushiki Kaisha | Readjustment preventing structure for adjustment member |
US5082409A (en) * | 1990-10-26 | 1992-01-21 | Aluminum Company Of America | Vehicular lug nut cover and clip |
US6238158B1 (en) | 1999-03-22 | 2001-05-29 | Alcoa Inc. | Hub retention for lug nut covers |
ES2296566A1 (en) * | 2007-11-06 | 2008-04-16 | Luis J. Penalonga Teijeiro | Anti-vandal screw has cylindrical outer part, which uses key to allow handling, and contour built-washer is also provided |
CN104047950A (en) * | 2014-07-01 | 2014-09-17 | 宁波浩泰电力工程设备有限公司 | Automotive anti-theft bolt |
CN104074855A (en) * | 2014-07-01 | 2014-10-01 | 宁波浩泰电力工程设备有限公司 | Automobile anti-theft bolt |
CN104074855B (en) * | 2014-07-01 | 2015-09-30 | 宁波浩泰电力工程设备有限公司 | A kind of automobile burglar bolt |
CN104047950B (en) * | 2014-07-01 | 2015-12-02 | 宁波浩泰电力工程设备有限公司 | A kind of vehicle anti-theft bolt |
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