WO2007134588A1 - Vis élastique - Google Patents

Vis élastique Download PDF

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Publication number
WO2007134588A1
WO2007134588A1 PCT/DE2007/000920 DE2007000920W WO2007134588A1 WO 2007134588 A1 WO2007134588 A1 WO 2007134588A1 DE 2007000920 W DE2007000920 W DE 2007000920W WO 2007134588 A1 WO2007134588 A1 WO 2007134588A1
Authority
WO
WIPO (PCT)
Prior art keywords
screwing
wire
threaded portion
fastening means
bore
Prior art date
Application number
PCT/DE2007/000920
Other languages
German (de)
English (en)
Inventor
Jürgen Bodenschatz
Bert Weiner
Original Assignee
Magna Engineering Center Gmbh
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 Magna Engineering Center Gmbh filed Critical Magna Engineering Center Gmbh
Priority to DE112007001759T priority Critical patent/DE112007001759A5/de
Publication of WO2007134588A1 publication Critical patent/WO2007134588A1/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
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • 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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads

Definitions

  • the present invention relates to a sterbefest onlyssch and in particular a spring screw, method for setting and releasing and tools for performing these methods.
  • a known spring screw shows the document DE 102 04 721 A1.
  • This particular provided for use on diaphragm pumps spring screw comprises a head and a shaft having a rigid threaded portion at its front end. Between the head and the threaded portion, a helical spring-like portion with one or more turns is provided.
  • this screw is difficult to manufacture due to its geometry. In order to obtain the solid threaded portion, a one-piece manufacture requires a massive rod-shaped stock. The helical spring-like section is accordingly formed by complicated machining machining or other material removal.
  • the present invention provides, in a first aspect, the object, an improved spring screw or a comparable inexpensive producible releasable
  • the present invention has the particular object, in combination with a low-cost method, of reducing the loss of prestress which arises under the influence of heat in the case of some materials.
  • the present invention solves the object by a screw fastener with the combination of the features according to claim 1.
  • the invention solves the set object further by a method comprising the steps according to claim 4.
  • a spring screw as a preferred embodiment of the screw fastening means according to the invention a preferred embodiment of a method for screwing in and removing this spring screw and a screwing and a boring tool for carrying out the respective particular method are below for the sake of convenience, reference being made to the schematic drawings for the purpose of illustration. It shows:
  • FIG. 1 shows a spring screw according to the invention in perspective intention from the left
  • FIG. 2 shows the spring screw according to FIG. 1 from the lower front side
  • FIG. Fig. 3 is a prepared for the connection of a plate-shaped workpiece connected to another plate-shaped or solid workpiece bore in section;
  • FIG. 4 the workpieces of FIG. 3 with a spring screw and an inserted
  • Fig. 5 is an enlarged view of the detail "F" in Fig. 4;
  • FIG. 6 shows the situation according to FIG. 4 in another sectional plane
  • Fig. 7 is an enlarged view of the detail "G" in Fig. 6;
  • FIG. 8 the workpieces of FIG. 3 with a spring screw and an attached Ausdusvorraum.
  • a spring screw 1 is wound from one piece of a spring wire 6.
  • the spring wire 6 will be referred to below as a "wire" and has in the illustrated embodiment for general purposes preferably a round cross-section. For particular applications, however, other cross sections may be advantageous, such as oval, lenticular or rhombic.
  • a first, designated as threaded portion 2 region of the wire 6 is wound in the manner of a cylindrical coil spring.
  • the neutral fiber of the wire 6 runs approximately on a circular cylinder.
  • This thread section 2 can, as the following explanation explains its function, within certain limits deviate from the illustrated approximately exactly cylindrical shape. However, non-circular deviations are inappropriate for most applications.
  • a circular cone-shaped or barrel-shaped form of the threaded section 2 can be advantageous.
  • the end 3 of the wire 6 lying in the region of the threaded section 2 is angled diametrically in front of the end of the threaded section 2 and thus forms a holding possibility for a screwing-in tool. Details on this are reserved for a subsequent section describing the screwing procedure.
  • head portion 4 of the wire 6 forms by the spiral course in a circular disk a flat screw head after.
  • the course of the wire in this head portion 4 may differ within certain limits from the illustrated planar spiral.
  • the lying in the region of the head portion 4 end 5 of the wire 6 is angled in the radial direction and thus forms a holding possibility for a boring tool.
  • a boring tool For details, please refer to the description in a subsequent section concerning the solution procedure.
  • threaded section 2 and head section 4 do not necessarily have to be directly adjacent to each other as shown in the drawings.
  • a further section with a different shape may be created between these two sections.
  • this further section may have a cylindrical envelope shape with a diameter deviating from that of the threaded section 2, or may be wound with a different thread pitch in order to adapt the spring rate in this section.
  • FIG. 3, 4, 5 and 6 show the screwing-in of the above-described spring screw 1 in a pairing of two, for example, plate-shaped workpieces 7, 9 with a screwing device 12.
  • the illustrated screwing device 12 is for manual actuation determines and has a tool side 13 and a handle side 16.
  • a transverse handle 17 is arranged for easy handling.
  • the handle side 16 is expedient in a smooth shaft in the tool side 13, which has a preferably cylindrical portion 14 with a front-side recess 15.
  • the setting of the spring screw 1 takes place in prepared aligned holes 8, 10, of which the first passes through the first workpieces 7 and in the second at least partially into the second workpiece 9 into it.
  • the diameter of the first bore 8 in the upper workpiece 7 is selected to be slightly larger than the outer diameter of the spring screw 1. This ensures that between the bottom of the head portion 4 and the beginning of the supporting part of the threaded portion 2, a part of the spring screw 1 without contact to a Workpiece 7, 9 remains, resulting in an elastic, ie resilient, axial path. This compensates for the creep of the ",
  • vorvor 5 preferably has a circular cylindrical, in the interior of the threaded portion 2 matching shape.
  • the approximately diametrically angled end of the wire 6 engages in the frontal recess 15 and allows the transmission of torque between the spring screw 1 and Eindusvorides 12.
  • the diameter of the Eindusvorides 12 is slightly smaller than the inner diameter of the spring screw 1 10 selected so that the Insert spring screw 1 with the threaded portion 2 when screwing on the Eindusvortechnisch 12 and can reduce the diameter. This advantageously results in a larger elastic bias of the threaded portion 2 against the wall of the bore 10th
  • the recorded on the Einfvorides 12 spring screw 1 is in the prepared te drilling hole 15, 10 and screwed under appropriate axial pressure on the driving device 12 in the simultaneous rotation in the screwing in the yielding lower workpiece 9.
  • the turns of the wire 6 press in the threaded portion 2 in the resilient surface of the bore 10 in the region of their course through the second workpiece 9 and form a threaded track 11 in the manner of a 20 nut thread 11.
  • threaded threaded section 2 has an excess of the diameter of the bore 10. Otherwise, the threaded portion 2 will not press sufficiently in wall of the bore 10.
  • the spring screw 1 is screwed so deep into the bore 8, 10, that the spirally wound 25 head portion 4 with defined pressure on the surface of the first, overhead workpiece 7 is applied. After screwing in the spring screw 1, the driving device 12 is simply pulled up and is available for screwing further spring screws available.
  • the spring screw 1 30 can also be set by an automatic screwing device. This is constructed on the tool side, similar to the described manual screw-in device 12, and set up to slowly rotate the attached spring screw in a first step in accordance with the pitch of the turns in the threaded portion 2 in the bore to advance.
  • the reaching of the intended insertion depth is preferably recognized by the automatic driving device in order to end the first step automatically.
  • the automatic device will accordingly stop rotation and feed. In a subsequent second step, the device will pull the tool side out of the screwed-in spring screw 1 without rotation.
  • Fig. 8 shows a boring device 18 for releasing a connection made as described above.
  • the Ausfvoriques 18 has a front tool side 19 and a handle side 23.
  • the handle side 23 is designed as a disc-shaped round handle for handling the Ausfvorraum 18.
  • a preferably cylindrical and forwardly open bore 20 is included in the tool side 19.
  • the edge of the tool side 19 at the outlet of the bore 20 is designed to be perpendicular to the axis and forms a support edge 22 for securely placing the Auscardvortechnisch 18 on a flat workpiece 7.
  • the tool side 19 also has an approximately in the longitudinal direction of the bore 20 extending slot 21 , which exits at Auflagerand 22.
  • This slot 21 serves to receive the radially projecting from the spirally wound head portion B wire end of a screwed-in spring screw 1.
  • the Ausdusvoriques 18 of the slot 21 extends approximately exactly on a surface line of the cylindrical bore 20. This is advantageous but not mandatory.
  • the slot 21 can also wind with a relatively large pitch along the bore 20.
  • the Ausfvorraum 18 is placed as shown in the drawing with the tool side 19 on a set spring screw 1 on the workpiece surface, wherein the protruding end of the wire in the head portion B is received in the slot 21.
  • the diameter of the bore 20 is dimensioned so that the head portion 4 of the spring screw 1 is guided as accurately as possible therein.
  • the thus-mounted Ausfvortechnisch 18 is manually offset in the case shown in a rotation which causes a unscrewing of the threaded portion A from the track in the bore 10.
  • the Ausfvortechnisch 18 is permanently placed on the surface of the upper workpiece 7 when loosening.
  • the slot 21 allows the free movement of the recorded wire end in the direction of moving out of the hole out spring screw 1. It is clear that the exactly as shown on the surface line slot 21 as shown will exert no forces in this direction on the wire end , If an extracting force acting on the head section 4 should be desired, this is achieved when the slot 21 is placed on a high pitch helical line. This helical line has a reverse to the threaded portion 4 orientation. After unscrewing the spring screw 1, this is contained in the bore of the Ausfilvor substances 18 and can be removed from the workpiece 7 after lifting.

Abstract

Les vis à ressort sont connues pour assembler de manière libérable des matériaux soumis à des oscillations, un fluage ou à un tassement. Les vis à ressort connues sont toutefois constituées de plusieurs parties et ne sont pas conçues pour la réalisation d'assemblages à vis simples et peu coûteux présentant une force de serrage relativement faible. C'est pourquoi l'invention concerne un élément d'assemblage fileté (1) de fabrication aisée,comportant un fil (6) enroulé qui, dans une première partie dite filet (2), s'étend pratiquement en forme de vis sur une surface sensiblement cylindrique, légèrement conique ou légèrement cintrée et, dans une deuxième partie dite tête (4), s'étend pratiquement en forme de spirale en un tore, la partie tête (4)dépassant sensiblement de la partie filet (2) dans le sens radial. L'invention porte également sur un procédé pour visser cet élément d'assemblage fileté (1) dans une pièce d'usinage (9) déformable. Selon ce procédé, un alésage (10) est d'abord façonné dans la pièce d'usinage, le bout du fil (3) à l'extrémité avant libre de la partie filet (2) de l'élément d'assemblage fileté (1) est saisi au moyen d'un outil de vissage (9) et l'élément d'assemblage fileté (1) est vissé dans l'alésage (10), le fil, qui s'enroule approximativement en forme de vis dans la partie filet (2), imprimant un filet femelle (11) dans la surface de l'alésage (10).
PCT/DE2007/000920 2006-05-24 2007-05-21 Vis élastique WO2007134588A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007001759T DE112007001759A5 (de) 2006-05-24 2007-05-21 Federschraube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006024264 2006-05-24
DE102006024264.5 2006-05-24

Publications (1)

Publication Number Publication Date
WO2007134588A1 true WO2007134588A1 (fr) 2007-11-29

Family

ID=38562814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/000920 WO2007134588A1 (fr) 2006-05-24 2007-05-21 Vis élastique

Country Status (2)

Country Link
DE (1) DE112007001759A5 (fr)
WO (1) WO2007134588A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101163418B1 (ko) 2009-09-30 2012-07-12 이길상 체결장치 및 이를 이용한 저장탱크
DE102013219013A1 (de) 2013-09-20 2015-03-26 Böllhoff Verbindungstechnik GmbH Federverbindungselement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB572218A (en) * 1944-01-27 1945-09-27 Albert Thomas Cross Improvements in and relating to bolts and nuts
US2756848A (en) * 1955-01-18 1956-07-31 Goodyear Aircraft Corp Conical coil spring brake lining retention device
EP0090698A1 (fr) * 1982-03-23 1983-10-05 Otalu S.A. Filet hélicoidal à autotaraudage et fil pour sa fabrication
EP0140812A1 (fr) * 1983-09-16 1985-05-08 Rexnord Holdings Inc. Insert à spires hélicoidales sans prise

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB572218A (en) * 1944-01-27 1945-09-27 Albert Thomas Cross Improvements in and relating to bolts and nuts
US2756848A (en) * 1955-01-18 1956-07-31 Goodyear Aircraft Corp Conical coil spring brake lining retention device
EP0090698A1 (fr) * 1982-03-23 1983-10-05 Otalu S.A. Filet hélicoidal à autotaraudage et fil pour sa fabrication
EP0140812A1 (fr) * 1983-09-16 1985-05-08 Rexnord Holdings Inc. Insert à spires hélicoidales sans prise

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101163418B1 (ko) 2009-09-30 2012-07-12 이길상 체결장치 및 이를 이용한 저장탱크
DE102013219013A1 (de) 2013-09-20 2015-03-26 Böllhoff Verbindungstechnik GmbH Federverbindungselement
WO2015039997A1 (fr) 2013-09-20 2015-03-26 Böllhoff Verbindungstechnik GmbH Élément de liaison élastique
CN105556135A (zh) * 2013-09-20 2016-05-04 伯尔霍夫连接技术有限公司 弹簧连接元件
US9909603B2 (en) 2013-09-20 2018-03-06 Böllhoff Verbindungstechnik GmbH Spring connection element
CN108302110A (zh) * 2013-09-20 2018-07-20 伯尔霍夫连接技术有限公司 弹簧连接元件
CN108302110B (zh) * 2013-09-20 2019-11-19 伯尔霍夫连接技术有限公司 弹簧连接元件
US10626900B2 (en) 2013-09-20 2020-04-21 Böllhoff Verbindungstechnik GmbH Spring connection element

Also Published As

Publication number Publication date
DE112007001759A5 (de) 2009-04-30

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