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WO2003038293A1 - Ecrou - Google Patents

Ecrou Download PDF

Info

Publication number
WO2003038293A1
WO2003038293A1 PCT/EP2002/012023 EP0212023W WO03038293A1 WO 2003038293 A1 WO2003038293 A1 WO 2003038293A1 EP 0212023 W EP0212023 W EP 0212023W WO 03038293 A1 WO03038293 A1 WO 03038293A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
fastening end
sheet metal
internal thread
threaded section
Prior art date
Application number
PCT/EP2002/012023
Other languages
German (de)
English (en)
Inventor
Reinhold Opper
Wolfgang Werner
Original Assignee
Newfrey Llc
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 Newfrey Llc filed Critical Newfrey Llc
Publication of WO2003038293A1 publication Critical patent/WO2003038293A1/fr

Links

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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
    • F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
    • 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
    • F16B37/02—Nuts or like thread-engaging members made of thin sheet material
    • 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
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/048—Non-releasable devices
    • 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

Definitions

  • the invention relates to a nut, in particular a weldable or solderable nut.
  • the mother can e.g. can be attached by welding or soldering.
  • the thread can be used to create a detachable screw connection between two workpieces.
  • Known types of nut are characterized by a high stiffness of the nut, which prevents self-locking of the nut and vibration decoupling between the workpieces to be fastened together.
  • the use of materials for known mother species is high. They are usually made of wire material or rods, whereby a hole has to be drilled for the thread. Due to the comparatively high manufacturing costs, nuts have to be dispensed with in some cases, although one would like to take advantage of a screw connection.
  • Another object of the present invention is to provide a nut that offers a weight advantage and is inexpensive to manufacture.
  • Yet another object of the present invention is to provide a nut that can be welded on particularly well. This object is achieved by a mother with the features of claim 1. Advantageous further developments and refinements, which can be used individually or in combination with one another, are the subject of the dependent claims.
  • the nut according to the invention has a head section with an outer diameter and a fastening end opposite the head section with an inner diameter, the head section comprising a threaded section with an internal thread, and is characterized in that the outer diameter of the threaded section is smaller than the inner diameter of the fastening end ,
  • the nut is advantageously weldable or solderable.
  • the nut is fastened to a workpiece.
  • the attachment can be done, for example, by welding, soldering or gluing.
  • a screw connection can be produced using the threaded section with an internal thread.
  • the feature that the outside diameter of the threaded section is smaller than the inside diameter of the fastening end gives the nut according to the invention particular elasticity.
  • the spring properties of the nut ensure that the nut is self-locking and allow a screw inserted into the nut to be adjusted in the internal thread of the nut in the event of an angular misalignment.
  • the nut according to the invention can be formed or beaten from sheet metal or from a tube or cold. Function and form can be positively influenced by shaping processes. In contrast to extrusion, sheet metal forming, securing and clamping functions can be used in the element. It is particularly advantageous if the nut is formed from a sheet metal or from a tube, since this considerably reduces the weight of the nut and the nut can be manufactured inexpensively.
  • the internal thread can be pressed or cut.
  • the mother of the invention is self-locking due to its elasticity.
  • the reduced mass of the nut Due to the reduced mass of the nut, wear in the feed hose and in the receiver is reduced during automated feeding.
  • the reduced mass allows, for example, the construction of lighter bodies in the automotive industry.
  • the packaging containers of the nuts can be smaller be chosen, which among other things also reduces logistics costs. Due to the asymmetry in the axial direction, a better position detection of the nut during sorting in the feeder is achieved. Because the tensile force is transmitted to the component via a widened ring, the nut can transmit greater torques.
  • the bowl shape prevents welding spatter or welding bubbles from getting into the internal thread.
  • the shape of the cup means that no arc can form at a through hole in the sheet metal, which could prevent a screw from being passed through the through hole and make it impossible to screw the screw into the thread.
  • the wall thickness of the threaded section essentially corresponds to the wall thickness of the fastening end. Material is saved due to the substantially uniform wall thickness, which has an advantageous weight-reducing effect.
  • the difference between the inside diameter of the fastening end and the outside diameter of the threaded section corresponds approximately to the wall thickness of the fastening end. This results in sufficient elasticity as well as sufficient rigidity of the nut.
  • the nut has at least one sheet-metal strip which is integral with the threaded section and which is bent around the outside of the threaded section from an outer edge and ends in a fastening end below the threaded section.
  • an overall height of the nut can be achieved which is much greater than the sheet thickness, which saves material and the nut can be punched in an inexpensive manner, so that the hole drilling process for the internal thread, which is common in known weldable nuts, is achieved is simplified.
  • the weight of the mother is comparatively low.
  • the weight reduction is between 30 to 70%. For example, in the case of an M6 nut, the weight is reduced by 67%.
  • a screw can adapt in the threaded section, for example with a small angular misalignment.
  • the transmission of vibrations is reduced.
  • the axial elasticity results self-locking of the nut in the direction of the thread axis.
  • the elasticity makes a washer or a snap ring unnecessary.
  • the elasticity of the nut causes an even distribution of the forces on the threads of the internal thread, which leads to a lower notch effect. The material is thus protected against fatigue.
  • the stiffness of the nut can be variably specified within wide limits.
  • the shape of the nut is not limited to cylindrical shapes, but asymmetrical, curved or angled shapes can be achieved. Such shapes enable two workpieces to be connected at any angle to one another.
  • the nut has at least two, in particular at least four, metal strips.
  • the metal strips depending on the shape, in particular their number and their length, the elasticity of the nut can be specified within wide limits.
  • the metal strips are at the same distance from one another. A uniform distribution of the metal strips results in a uniform distribution of the forces acting on the nut on the respective metal strips, which has an advantageous effect on the strength of the nut.
  • the sheet metal strips are formed with the same length. The same length ensures even soldering or even welding of the nut.
  • the nut advantageously has a cylindrical outer shape with a rounded head section.
  • the rounded head section prevents injury to a workpiece to be attached due to sharp edges of the nut, and better detection of the position of the nut with fully automatic feeding of the nut is achieved.
  • the threaded section has a collar that receives the thread. The collar extends the thread length beyond the thickness of the sheet. This increases the stability of the screw connection.
  • the collar tapers in a funnel shape towards the internal thread.
  • the funnel-shaped collar makes it easy to screw a screw into the nut.
  • At least one additional slot is provided, which extends from the threaded section towards the fastening end.
  • At least two, in particular at least four, additional slots are provided.
  • the elastic properties of the threaded section can be predetermined by the number and type of additional slots. Furthermore, it can be used to prevent the screw from being loosened independently by screwing it into the internal thread.
  • the additional slots are at the same distance from one another. With the same distance, a uniform force distribution is achieved on the screwed screw in the internal thread.
  • the additional slots have the same length. A uniform force distribution is also achieved by the same length.
  • the nut For the production, the mechanical properties and for soldering or welding the nut onto a workpiece, it is expedient for the nut to be made of metal, in particular of a sheet metal which is thin relative to the size of the nut.
  • the axis of the internal thread is sometimes also inclined to the axis of the fastening. supply forming.
  • the axis of the internal thread is perpendicular to the axis of the fastening end. Since the nut according to the invention is formed from a sheet metal, it is possible with simple means to produce rotationally asymmetrical, in particular angled, nuts in a simple manner. By suitable punching of the sheet metal or corresponding bending of the sheet metal strips, a wide variety of shapes of the nut are possible in a simple manner.
  • the sheet metal strips have spring structures.
  • the spring structures are impressed by cutouts and / or impressions.
  • the head section is closed.
  • a screw connection is sealed by the closed head section. In this way it is possible to achieve tight and elastic screw connections with the nut.
  • FIG. 1 shows a weldable nut according to the invention welded onto a workpiece in a perspective oblique view
  • Fig. 2 shows a mother of Figure 1 in plan view.
  • FIG. 3 shows a weldable nut according to the invention welded on its side onto a workpiece in a perspective oblique view
  • FIG. 4 shows a nut in longitudinal section along the section line IV-IV according to FIG. 3; 5 shows a welded-on nut according to the invention according to FIG. 1 from the side;
  • FIG. 6 shows a nut according to FIG. 5 in longitudinal section
  • FIG. 7 shows a nut according to the invention according to FIG. 1 with additional slots
  • FIG. 8 shows a nut according to FIG. 7 in a perspective oblique view
  • FIG. 9 shows a nut according to the invention with spring structures in a perspective oblique view from below;
  • FIG. 10 shows a nut according to the invention with cutouts for producing spring structures in a side view
  • FIG. 11 shows a nut according to FIG. 10 in longitudinal section
  • Fig. 14 is a sealed nut of FIG. 13, which is welded to a workpiece.
  • the nut 1 shows a perspective view of a nut 1 according to the invention.
  • the nut 1 has a fastening end 3 with which it is welded to a workpiece 7.
  • sheet metal strips 5 which start from a threaded section 2 with an internal thread 4 and an axis A, are bent around the outside of an outer edge of the threaded section 2, so that they each end below the threaded section 2 in the fastening end 3.
  • Slits 11 are formed between the metal strips 5.
  • the nut 1 has a cylindrical outer shape with a rounded head section 10. With the help of the rounded head section 10, a risk of injury from sharp edges of the nut is avoided.
  • the threaded section 2 has a collar 9 which has the internal thread 4.
  • the shape of the sheet metal strip 5 according to the invention saves material, in contrast to weld nuts made from solid material.
  • the thread retraction advantageously lies freely in the center of the nut, so that a screw, for example in the event of an angular offset, winch 4 can adjust. Vibrations occurring are reduced or avoided by the elasticity of the nut 1.
  • the elasticity of the nut 1 also better compensates for an elastic linear expansion of a screw.
  • the internal thread 4 can advantageously be pressed or cut. Attack surfaces such as support elements can be arranged in the form of beads or struts.
  • FIG. 2 shows a nut according to the invention according to FIG. 1 in a top view.
  • five sheet metal strips 5 are bent from the threaded section 2 to the workpiece 7.
  • FIG. 3 shows a nut 1 according to the invention, in which the axis A of the internal thread 4 is perpendicular to the axis B of the fastening end 3.
  • the axis B of the fastening end 3 is defined by the fastening end 3 or is defined by the vertical on the fastening surface of the workpiece 7, to which the nut 1 is fastened with its fastening end 3.
  • the two axes are at an angle of 90 ° to each other.
  • Such an angled nut 1 can also be produced according to the invention with simple means by punching and then deforming the metal strips 5. With an angled nut, two workpieces can be attached at an oblique angle. Of course, any other angle between 0 and 180 ° can be realized.
  • Fig. 4 shows the nut according to the invention in longitudinal section along the section line IV-IV of FIG. 3, wherein a weld 8 between the fastening end and the workpiece 7 can be seen.
  • the metal strips 5 form a cage around the internal thread 4. It can be seen very clearly that the axis A of the internal thread 4 is perpendicular to the axis B of the fastening end 3.
  • the axis B is perpendicular to the surface on which the nut 1 is attached.
  • FIG. 5 and 6 show a nut 1 according to the invention, the metal strips 5 being welded at the fastening end 3 on the workpiece 7 at the welding point 8.
  • the threaded section 2 has a rounded head section 10.
  • the nut 1 is arranged above a through-bore 13.
  • 7 and 8 show a nut 1 according to the invention with additional slots 6 which are attached to the threaded section 2 and extend in the direction of the fastening end 3. With the help of these additional slots 6, the flexibility of the nut 1 with regard to its diameter is increased.
  • FIG. 9 shows a nut 1 according to the invention with additional spring structures 12 in the perspective oblique view from below.
  • the spring structures 12 are punched out in the sheet-metal strip 5 through bulbous cutouts. Such outbreaks 14 and impressions specifically create weak points and thus a spring action of the nut 1.
  • Due to the spring action of the nut 1, a screw in the threaded section 2 can adapt, e.g. with angular misalignment. If the nut 1 is preloaded on the workpiece side, the elasticity of the nut 1 is self-locking. The spring effect leads to a reduced transmission of vibrations.
  • the uniform distribution of the forces on the threads of the internal thread 4 caused by the elasticity of the nut 1 leads to a lower notch effect and the nut 1 is protected against fatigue.
  • a nut 1 according to the invention with cutouts 14 for producing spring structures 12 is shown in side view in FIG. 10 and in longitudinal section in FIG. 11.
  • the inside diameter ID of the fastening end 3 is larger than the outside diameter AD of the threaded section 2.
  • the wall thickness WG of the threaded section 2 is essentially as large as the wall thickness WB of the fastening end 3.
  • the sheet metal strips 5 are separated from one another at the fastening end 3 by slots 11 and point out Breakouts 14 or impressions that lead to an additional spring action.
  • the spring action enables self-locking of the nut 1, compensation for linear expansion of a screw and adjustment of the nut 1 for angular misalignment of a screw.
  • FIG. 12 shows a further nut 1 according to the invention in longitudinal section, the head section 10 having a collar 9 pointing away from the fastening end 3.
  • the inner diameter LD of the fastening end 3 is approximately a wall thickness WB of the fastening end 3 greater than the outer diameter AD of the threaded section 2.
  • the wall thickness WG of the threaded section 2 is essentially as large as the wall thickness WB of the fastening end 3.
  • the nut 1 is with its fastening end 3 welded to a welding point 8 on a workpiece 7.
  • the workpiece 7 is designed as a sheet metal strip 5, which has a through hole 13.
  • the head section 10 advantageously has a chamfer 15 which facilitates the insertion of the screw from the side facing away from the workpiece.
  • the mother 1 according to the invention is self-locking due to its elasticity. It has a lower operating weight and can be manufactured in a simple and inexpensive manner. The weight reduction in mother 1 is between 30 to 70%. For M6 threads, for example, it is about 67%. With automated feeding, the low mass of the nut reduces wear in the feed hose and in the receiver.
  • the widened ring which arises from the large inner diameter ID of the fastening end 3 and through which the tensile force is transmitted to the workpiece 7, permits transmission of larger torques.
  • the cup shape also prevents welding spatter or welding bubbles from getting into the internal thread 4 and contaminating it.
  • the distance between the welding point 8 and the through-bore 13 of the sheet 5 prevents an arc from forming at the edge of the through-bore 13.
  • FIG. 13 shows a sealed nut 1 according to the invention in longitudinal section with a fastening end 3, a threaded section 2 with an internal thread 4 and a head section 10, the head section 10 being closed. Due to the closed head section 10 and the feature that the outer diameter AD of the threaded section 2 is Heiner than the inner diameter ID of the fastening end 3, elastic screw connections can be produced with the nut 1, which are sealed at the same time.
  • FIG. 14 shows the sealed nut 1 according to FIG. 13, the nut 1 being welded onto a workpiece 7 which has a through bore 13. Since the distance between the welding point 8 and the through hole 13 is comparatively large, it is prevented that welding spatter or welding bubbles clog the through hole or contaminate the internal thread 4 of the nut 1. With such a nut 1, a further part, for example a cable lug 17, can be fixed with a screw 16. - left
  • the nut 1 according to the invention in particular a weldable or solderable nut 1, has a head section 10 with an outer diameter AD and a fastening end 3 opposite the head section 10 with an inner diameter ID, the head section 10 comprising a threaded section 2 with an internal thread 4, and drawing is characterized in that the outer diameter AD of the threaded portion 2 is smaller than the inner diameter ID of the fastening end 3.
  • the advantageous properties of a screw connection are combined with the advantages of elastic connections and inexpensive manufacture.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

L'invention concerne un écrou (1), notamment un écrou (1) pouvant être assemblé par soudage ou brasage. Cet écrou comprend une section tête (10) d'un diamètre externe (AD) et une extrémité de fixation (3) opposée à la section tête (10) et d'un diamètre interne (ID). La section tête (10) comporte une section filet (2) pourvue d'un filetage interne (4) et est caractérisée en ce que le diamètre externe (AD) de la section filet (2) est inférieur au diamètre interne (ID) de l'extrémité de fixation (3). L'écrou (1) selon l'invention réunit les propriétés avantageuses d'un assemblage par vis aux avantages d'assemblages élastiques et d'une production économique.
PCT/EP2002/012023 2001-10-31 2002-10-28 Ecrou WO2003038293A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001153699 DE10153699A1 (de) 2001-10-31 2001-10-31 Mutter
DE10153699.2 2001-10-31

Publications (1)

Publication Number Publication Date
WO2003038293A1 true WO2003038293A1 (fr) 2003-05-08

Family

ID=7704308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/012023 WO2003038293A1 (fr) 2001-10-31 2002-10-28 Ecrou

Country Status (2)

Country Link
DE (1) DE10153699A1 (fr)
WO (1) WO2003038293A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7021875B2 (en) 2001-10-30 2006-04-04 Newfrey Llc Coated, weldable fastener, a method of preventing adherence of a second coating to a fastener portion, and a method fastening
US7083479B2 (en) 2001-02-16 2006-08-01 Newfrey Llc Fastener for an electric contact
US11441708B2 (en) * 2017-10-27 2022-09-13 Bayerische Motoren Werke Aktiengesellschaft Nut and line connection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011141039A1 (fr) * 2010-05-12 2011-11-17 Hbs Bolzenschweiss-Systeme Gmbh & Co. Kg Elément à souder en forme de douille estampée à froid, et procédé de réalisation d'un tel élément à souder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154174A (en) * 1938-01-10 1939-04-11 Marchou Elie Raoul Deformable self-locking nut
GB757519A (en) * 1953-10-21 1956-09-19 J A Phillips & Company Ltd Improvements in or relating to cap-nuts
GB839863A (en) * 1956-08-13 1960-06-29 Herman Page Randall Lock nut provided with thread gripping fins
FR2129181A5 (fr) * 1971-03-18 1972-10-27 Saviem
DE3512782A1 (de) * 1985-04-10 1986-10-23 Daimler-Benz Ag, 7000 Stuttgart Mit einer tragplatte vernietbare mutter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7907821U1 (de) * 1979-07-26 Karl Limbach & Cie. Kg., 5650 Solingen An schweißmutter
DE3728219A1 (de) * 1987-08-24 1989-03-09 Fastenrath Befestigungstechnik Mutter, wie z. b. schweiss- oder einpressmutter
DE9408041U1 (de) * 1994-05-14 1994-07-14 Adam Opel AG, 65428 Rüsselsheim Anschweißmutter
DE19927369A1 (de) * 1999-06-16 2000-12-21 Udo Franz Formgeprägtes Schweißelement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154174A (en) * 1938-01-10 1939-04-11 Marchou Elie Raoul Deformable self-locking nut
GB757519A (en) * 1953-10-21 1956-09-19 J A Phillips & Company Ltd Improvements in or relating to cap-nuts
GB839863A (en) * 1956-08-13 1960-06-29 Herman Page Randall Lock nut provided with thread gripping fins
FR2129181A5 (fr) * 1971-03-18 1972-10-27 Saviem
DE3512782A1 (de) * 1985-04-10 1986-10-23 Daimler-Benz Ag, 7000 Stuttgart Mit einer tragplatte vernietbare mutter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7083479B2 (en) 2001-02-16 2006-08-01 Newfrey Llc Fastener for an electric contact
US7021875B2 (en) 2001-10-30 2006-04-04 Newfrey Llc Coated, weldable fastener, a method of preventing adherence of a second coating to a fastener portion, and a method fastening
US7255521B2 (en) 2001-10-30 2007-08-14 Newfrey Llc Coated, weldable fastener, a method of preventing adherence of a second coating to a fastener portion, and a method fastening
US7594985B2 (en) 2001-10-30 2009-09-29 Newfrey Llc Method of preventing adherence of a second coating to a fastener portion
US11441708B2 (en) * 2017-10-27 2022-09-13 Bayerische Motoren Werke Aktiengesellschaft Nut and line connection

Also Published As

Publication number Publication date
DE10153699A1 (de) 2003-05-15

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