CZ302768B6 - Bolted connection securing system - Google Patents

Bolted connection securing system Download PDF

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Publication number
CZ302768B6
CZ302768B6 CZ20080746A CZ2008746A CZ302768B6 CZ 302768 B6 CZ302768 B6 CZ 302768B6 CZ 20080746 A CZ20080746 A CZ 20080746A CZ 2008746 A CZ2008746 A CZ 2008746A CZ 302768 B6 CZ302768 B6 CZ 302768B6
Authority
CZ
Czechia
Prior art keywords
fuse
nut
screw
bolt
head
Prior art date
Application number
CZ20080746A
Other languages
Czech (cs)
Other versions
CZ2008746A3 (en
Inventor
Vítek@Karel
Original Assignee
CVUT v Praze, Fakulta strojní
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 CVUT v Praze, Fakulta strojní filed Critical CVUT v Praze, Fakulta strojní
Priority to CZ20080746A priority Critical patent/CZ302768B6/en
Publication of CZ2008746A3 publication Critical patent/CZ2008746A3/en
Publication of CZ302768B6 publication Critical patent/CZ302768B6/en

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Abstract

The present invention relates to a system for securing a bolted connection consisting of a body with surface (4) and a bolt (3) passing therethrough and having a bolt head (3) and optionally a nut (1) screwed on the bolt, wherein a ring-shaped safety (2) is pressed between the bolt (3) head, optionally the nut (4) and the body surface (4) along the circumference of the bolt (3) head. Said ring-shaped safety (2) front surface abuts to the body surface (4) and prevents thus the bolt (3), optionally the nut (1) spontaneous loosening. Preferably, the safety abutment of the body surface (4) is secured by adhesive, adherent (7) or serrated surfaces (10) of the safety (2) faces, optionally tongues (13) overlapping or projecting of at least one surface of the safety (2).

Description

Technical field
The invention relates to constructions forming a system for securing nuts and / or bolt heads of bolted connections. These constructions are used both to control nuts and bolts and to secure them against unintentional loosening.
BACKGROUND OF THE INVENTION
The usual means for securing screw connections are various types of washers (spring washers, fan washers, toothed washers, drift washers, washer washers), as well as cotter nuts or self-locking nuts, containing a plastic friction element, or two-piece retaining nuts.
The self-locking screw elements - nuts or bolts can be classified according to DE 3 327 587 (A1), wherein the spring washer is formed directly from the screw head or nut and is an integral part thereof, respectively the nut or bolt is a fixed part of the spring washer. Further similar are the structures of U.S. Pat. No. 3,343,580 (A) wherein the fan washer is formed directly from the screw head or nut and is an integral part thereof, respectively the nut or bolt is a fixed part of the fan washer. Also, the structures of GB 1 496 360 (A) have resilient locking darkness or darkness formed directly from the screw head or nut by bending part of their material to the thread axis and the locking darkness or darkness is an integral part of the screw or nut. All these three types of self-locking nut or bolt designs secure bolted connections, in principle they are similar in that loosening fuses are a permanent part of them, which always tightens when tightening the bolted connection and the connection must always be secured by their own fuse because she is an integral part of it. However, this may not be an advantage, but a substantial drawback. For example, when tightening a screw connection, the first contact of the nut or bolt with the contacted gripping surface is due to their protruding fuse, which is rotated on the surface by turning the bolt or nut in a circular arc. and due to the axial displacement along the thread, it becomes more and more pushed into the contact surface and becomes more flexible. Also when loosening the screw connection, the fuse must be rotated together with the nut or bolt and it is possible to damage not only the gripping surface but also the part of the fuse, which is embedded in the gripping surface and prevents its construction from loosening the screw connection.
Other known means for securing screw connections include, for example, threaded paints and varnishes that adhere screw and nut threads to one another, or wire fuses using the cotter pin principle. These locking elements are usually to be applied before tightening the screw or screw connection (for example, washers are placed under the heads of the screws or under the nuts on the shaft of the screw before tightening the connection).
SUMMARY OF THE INVENTION
Perspective would be the design of a fuse that would be applicable only after tightening the screw connection or allowing it to be screwed or moved by suitable tools. The benefit of such a fuse would be its possible mounting on a nut or bolt in the ready position before using it to form a bolted connection or, conversely, to secure the bolted connection only after its installation. The possible formation of lock nut or lock bolt assemblies reduces the number of components entering the bolt assembly, while also allowing specific gripping in the slots formed between the nut (or bolt head) and the molded fuse, and the handling of bolt joint components and its final securing against permitting after its installation.
It is an object of the invention to provide a bolt connection securing system that allows to secure bolt or bolt joints against spontaneous loosening and is applicable to bolt joint elements either prior to bolt assembly, further during bolt assembly or after bolt assembly alone. The system allows you to integrate and create a bolt or nut assembly with a self-locking bolt connection to reduce the number of bolt components (such as lock washers) and further expand options such as repositioning and other tool handling (bolt nuts and bolts) also with a screwdriver).
Disadvantages and drawbacks of the prior art solutions are eliminated by the bolt fastening system according to the present invention, which is based on the fact that its fuses consist of an annular body which can be pressed on the side and / or side. along the perimeter of the nut or bolt head before or after assembly of the bolted connection. The faces of the annular body of these fuses are either provided with an adhesive or adhesive surface, or they may have protruding teeth or possibly bent springs.
After mounting of the screw or screw connection, the pressed fuse can be moved in the direction of the screw connection axis along the screw head or nut to the clamped surface (arrest or push the fuse under the nut or screw head with a screwdriver for example). If the face of the fuse is provided with an adhesive or adhesive surface, the screw connection or the screw head or nut will secure against spontaneous rotation against the clamped surface to which the head of the screw head or nut faces and to which the fuse adheres or adheres. If the fuse face is provided with teeth or bent springs, after contact with the surface under the head of the screw or nut, the teeth or edges of the springs are engraved into the contact surface, firmly interconnecting the screw head or nut with it and preventing spontaneous rotation of the head.
A tool (eg a screwdriver) can be inserted between the sides of the screw head or nut and the fuse and can be rotated or screwed by a nut or screw, or the tool can be moved using this option. When using slots between the bolt head or nut and the fuse, the bolt head or nut may have a simpler shape than the regular angular, as is usual, since it is sufficient to provide a suitable slot between the head and fuse into which the bolt control tool can be inserted.
The screw connection can be loosened in the usual way, since the fuse covers only part of the outer surface of the screw head or nuts. Slots formed between the screw head or nut and the fuse may also be used to loosen the screw connection; a tool (such as a screwdriver) inserted in it can control the screw connection.
Overview of the drawings
The invention of the nut lock is further described with reference to the accompanying drawings in FIGS. 1a to 7, showing individual embodiments.
DETAILED DESCRIPTION OF THE INVENTION
According to the embodiment of the invention in FIGS. 1a and 1b, in principle, the screw locking system comprises a fuse 2 which is pressed on the periphery of the nut 1 (or screw head 3) before, during or after the screw assembly. joints. In the locking function, the fuse 2 is pushed or pulled along the nut surface by the tool in the direction of the screw connection axis 6 onto the body-gripped surface 4. By firmly contacting the face of the fuse 2 with the surface 4 of the clamped body, the nut 1 is also firmly connected to it, whereby the screw connection is secured against spontaneous loosening. The slots 5 formed between the nut 1 and the fuse 2 may serve to hold the actuating tool and thereby manipulate the screw connection or to carry it in space or to screw it.
According to the embodiment of FIG. 2, the fuse 2 is provided with adhesive faces having an adhesive or adhesive surface 7, which, after being pressed, adheres to the surface 4 gripped by the nut 1, firmly interlocking with it and thereby securing it against spontaneous loosening.
According to the embodiment of FIG. 3, the fuse 2 is provided with protruding teeth 10 on the fronts, which after pressing the fuse are embedded in the nut 1 of the clamped surface 4, firmly connected to it and secured against spontaneous loosening.
According to the embodiment of Figs. 4a to 4c, the fuse 2 is formed by one or more turns of a coiled rod of smooth or angular cross section with two flexible tongues 13 formed by the rod ends and projecting in both directions from the end faces of the fuse 2 at least one of which, when the fuse 2 is pressed onto the clamped surface 4, enters into this surface 4 and by this interconnection prevents the nut 1 from spontaneously loosening. Advantageously, in the region of its ends constituting the flexible tongues 13, the rod can be joined after a curl by a fixed joint 14, for example by welding. This modification allows for a sufficiently strong and consistent pressing on the nut 1 even in the case of a thin cross-section of the bar constituting the fuse 2.
According to an embodiment of the invention, FIG. 5a to 5c, the fuse 2 is formed by a flat ring-shaped ring with resilient tongues 13 projecting from its surface (s) in the direction of the screw connection axis 6 in one or two opposite senses along the circumference, which after pressing the fuse onto the clamped surface 4 This interconnection prevents the nut 1 from spontaneously loosening in one or both directions of rotation.
Giant. 6 illustrates the bolt locking system in more detail. Here, when the fuse 2, in this case formed by a coiled rod of square or rectangular cross-section with bilaterally protruding elastic tongues 13, is pressed into contact with the contact surface 4 in the direction of the screw connection axis 6 which is clamped under the screw or nut 1, the tongues 13 support the fuse 2 and bias it against the contact surface 4 and engrave therein or exert a passive frictional force on the contact surface. In this way, in the direction of rotation about the axis 6 of the screw connection, it firmly connects the locked nut 1 with the contact surface 4 and prevents its spontaneous loosening, especially in the direction of the end of the embedded flexible tongue 13.
The design of FIG. 7 illustrates further the possibilities that the fuse 2 of the present invention opens. By utilizing the function of the slots 23 between the bolt head or nut 1 and the fuse 2, the bolt head or nut 1 may have a simpler shape than the regular rectangular, as usual. For example, the head 1 can be formed by cutting the cylinder head surface 22 as is sufficient to form an appropriate gap 23 between the bolt head or the nut 1 and the second fuse into the slot 23 can be inserted a suitable tool, respecting the simplified shape of the bolt head or nut L and operate it screw connection (prostorovějej move (not afraid to screw).
Industrial applicability
The screw locking system of the present invention can be used in screw joint applications and their subsequent securing against spontaneous loosening, and also to screw these joints or even to move their elements. The screw connection locking system can be pressed onto the bolt head or nut prior to assembly to form bolt or nut assemblies provided with this securing element. At the same time, the screw locking system can be applied to screw heads or nuts only after the screw connections have been assembled and tightened. By using the nut lock according to the present invention, other simpler bolt and nut shapes can also be used, since a tool plugged into the slots between the bolt head or nut and the nut lock can serve to control the bolted connection.

Claims (5)

  1. PATENT CLAIMS it
    A system for securing a bolted connection comprising a body with a surface (4) through which a bolt (3) is provided, provided with a bolt head (3) or a nut (1) screwed in, and between or on the bolt head (3) ( 3) a ring-shaped fuse (2) is located by a screwed nut (1) and a body surface (4), characterized in that the fuse (2) is pressed along the periphery of the head of the screw (3) or on this screw (3) screwed nuts (1), and with their end face abutting on the body surface (4) thereby preventing the screw (3) or the screw (3) screwed on the nut (I) from spontaneously loosening.
  2. System according to claim 1, characterized in that the fuse (2) is provided with an adhesive face 20 formed by an adhesive or adhesive surface (7) which is glued to the surface (4) when the fuse is pressed onto the clamped surface (4).
  3. System according to claim 1, characterized in that the fuse (2) is provided with serrated faces (10), one of which, after the fuse has been pressed onto the clamped surface (4) therein.
    25 by means of teeth.
  4. System according to claim 1, characterized in that the fuse (2) is formed by one or more turns of a twisted rod with two spring tongues (13) formed by the ends of the rod and projecting in both directions from the front surfaces of the fuse (2). ) screw connection,
    30, one of which, after pushing the fuse on the clamped surface (4) into the surface (4), will engage.
  5. System according to claim 4, characterized in that the rod is connected by a fixed joint (14) in the region of its ends forming the flexible tongues (13).
    System according to claim 1, characterized in that the fuse (2) is formed by a flat ring-shaped ring with resilient tongues (13) projecting from its front face (s) in the direction of the screw connection axis (6) in one or the other. in two opposing senses around the circumference, which, after pressing the fuse on the clamped surface (4), are embedded in that surface (4).
CZ20080746A 2008-11-25 2008-11-25 Bolted connection securing system CZ302768B6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CZ20080746A CZ302768B6 (en) 2008-11-25 2008-11-25 Bolted connection securing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ20080746A CZ302768B6 (en) 2008-11-25 2008-11-25 Bolted connection securing system

Publications (2)

Publication Number Publication Date
CZ2008746A3 CZ2008746A3 (en) 2010-06-02
CZ302768B6 true CZ302768B6 (en) 2011-10-26

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Application Number Title Priority Date Filing Date
CZ20080746A CZ302768B6 (en) 2008-11-25 2008-11-25 Bolted connection securing system

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CZ (1) CZ302768B6 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014087309A1 (en) * 2012-12-05 2014-06-12 BSH Bosch und Siemens Hausgeräte GmbH Fastening device, fastening system, washing machine with fastening system, and method for manufacture of fastening device

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959204A (en) * 1958-06-18 1960-11-08 Burdsall & Ward Co Threaded fastener with biting teeth and bearing platform
US3149655A (en) * 1961-08-14 1964-09-22 Illinois Tool Works Twisted tooth lock washer
US3343580A (en) * 1965-05-14 1967-09-26 Eaton Yale & Towne Self-locking fastener device
GB1496360A (en) * 1974-12-23 1977-12-30 Militana F Self-locking threaded fasteners
US4094352A (en) * 1975-06-23 1978-06-13 Maclean-Fogg Lock Nut Co. Fasteners having toothed bearing surfaces
US4157725A (en) * 1977-09-29 1979-06-12 Textron Inc. Fastener and captive frusto-conical washer assembly
DE3327587A1 (en) * 1982-12-07 1984-07-19 Chang Wan Park Screw element such as nuts or screw bolts
FR2580744A1 (en) * 1985-04-18 1986-10-24 Beauchet Jean Improved washer for screw or nut
CN2102403U (en) * 1991-08-19 1992-04-22 徐晓波 Anti-loose bolt member
EP0488500A1 (en) * 1990-11-28 1992-06-03 Pac-Fasteners Scalloped nut and method of construction
DE4137020A1 (en) * 1991-11-11 1993-05-13 Jaeger Eberhard Gmbh Self-securing fastening element - has specially shaped pyramids on end face interacting with component
FR2721075A1 (en) * 1994-06-14 1995-12-15 Procidec Assembly fixing with attached washer
JP2003065460A (en) * 2001-08-29 2003-03-05 Yanmar Co Ltd Valve stem fixing structure for solenoid valve
WO2005024253A1 (en) * 2003-09-05 2005-03-17 Robert Bauer Retaining element for blocking screw elements

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959204A (en) * 1958-06-18 1960-11-08 Burdsall & Ward Co Threaded fastener with biting teeth and bearing platform
US3149655A (en) * 1961-08-14 1964-09-22 Illinois Tool Works Twisted tooth lock washer
US3343580A (en) * 1965-05-14 1967-09-26 Eaton Yale & Towne Self-locking fastener device
GB1496360A (en) * 1974-12-23 1977-12-30 Militana F Self-locking threaded fasteners
US4094352A (en) * 1975-06-23 1978-06-13 Maclean-Fogg Lock Nut Co. Fasteners having toothed bearing surfaces
US4157725A (en) * 1977-09-29 1979-06-12 Textron Inc. Fastener and captive frusto-conical washer assembly
DE3327587A1 (en) * 1982-12-07 1984-07-19 Chang Wan Park Screw element such as nuts or screw bolts
FR2580744A1 (en) * 1985-04-18 1986-10-24 Beauchet Jean Improved washer for screw or nut
EP0488500A1 (en) * 1990-11-28 1992-06-03 Pac-Fasteners Scalloped nut and method of construction
CN2102403U (en) * 1991-08-19 1992-04-22 徐晓波 Anti-loose bolt member
DE4137020A1 (en) * 1991-11-11 1993-05-13 Jaeger Eberhard Gmbh Self-securing fastening element - has specially shaped pyramids on end face interacting with component
FR2721075A1 (en) * 1994-06-14 1995-12-15 Procidec Assembly fixing with attached washer
JP2003065460A (en) * 2001-08-29 2003-03-05 Yanmar Co Ltd Valve stem fixing structure for solenoid valve
WO2005024253A1 (en) * 2003-09-05 2005-03-17 Robert Bauer Retaining element for blocking screw elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014087309A1 (en) * 2012-12-05 2014-06-12 BSH Bosch und Siemens Hausgeräte GmbH Fastening device, fastening system, washing machine with fastening system, and method for manufacture of fastening device
ES2465440R1 (en) * 2012-12-05 2014-08-06 BSH Electrodomésticos España S.A. Fixing device, washing machine with fixing device and manufacturing procedure for fixing device

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Date Code Title Description
MM4A Patent lapsed due to non-payment of fee

Effective date: 20131125