WO2004099632A1 - Ensemble constitue d'une piece en plastique et d'un insert metallique avec vis imperdable - Google Patents

Ensemble constitue d'une piece en plastique et d'un insert metallique avec vis imperdable Download PDF

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Publication number
WO2004099632A1
WO2004099632A1 PCT/EP2004/050541 EP2004050541W WO2004099632A1 WO 2004099632 A1 WO2004099632 A1 WO 2004099632A1 EP 2004050541 W EP2004050541 W EP 2004050541W WO 2004099632 A1 WO2004099632 A1 WO 2004099632A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic part
hole
fastening
metallic insert
fastening screw
Prior art date
Application number
PCT/EP2004/050541
Other languages
German (de)
English (en)
Inventor
Werner Schnabel
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2004099632A1 publication Critical patent/WO2004099632A1/fr

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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
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/025—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread specially designed to compensate for misalignement or to eliminate unwanted play

Definitions

  • the present invention relates to an arrangement of a plastic part and a metallic insert according to the preamble of claim 1 and a plastic part according to the preamble of claim 7.
  • a plurality of fastening holes with metallic inserts for a corresponding number of fastening screws are generally provided in the longitudinal direction of the intake manifold flange.
  • the mounting holes can have different distances from one another due to the inevitable tolerances during injection molding of the plastic part, wherein the tolerances can add up to, for example, 1.5 mm.
  • the screw shaft of the fastening screws had to be made correspondingly thin, but this is not possible for reasons of strength.
  • the present invention is based on the object of an arrangement comprising a plastic part and a fastening screw according to the preamble of claim 1
  • the through hole of the metallic insert has a non-circular cross section, the largest diametrical dimension of which is in the longitudinal direction of the plastic part and the smallest diametrical dimension of which is designed for tight guidance of the fastening screw in the through hole.
  • at least one projection is provided on the wall of the through hole of the metallic insert, which protrudes transversely to the longitudinal direction and thus transversely to the largest diametrical dimension of the through hole into the interior of the through hole in order to hold the fastening screw captively in the through hole.
  • This geometrical design of the metallic insert allows tolerances in the direction in which the greatest tolerances occur to be compensated for, without this requiring a reduction in the shank cross section of the fastening screw.
  • a conventional fastening screw with customary dimensions can therefore be used. Since the fastening screw is also closely guided transversely to the direction in which the greatest tolerances occur and at least one projection is provided in this direction, the
  • Fastening screw held captive in the through hole of the metallic insert.
  • the plastic part, the metal insert and the fastening screw can therefore be preassembled and connected to the other component as a preassembled unit.
  • two diametrically opposite projections in the form of ramps are provided on the wall of the through hole of the metallic insert, which come into engagement with the thread of the fastening screw when the fastening screw is moved through the metallic insert.
  • the fastening screw is thus inserted into the metal insert for pre-assembly by turning.
  • the cross-section of the through hole of the metallic insert is preferably oval or other elongated, e.g. an approximately rectangular shape.
  • the metallic insert with its projections can be produced, for example, by sintering or extrusion, or also by rolling and looking up.
  • the projection or the projections of the metallic insert are arranged at an axial end of the through hole in order to be able to pull the fastening screw back into the interior of the through hole before screwing the plastic part to the other component.
  • the metallic insert is preferably provided with a shoulder on its circumference , which cooperates with a corresponding counter shoulder in the fastening hole of the plastic part in order to axially secure the metallic insert in the plastic part. This also ensures that the metallic insert is inserted in the correct orientation in the fastening hole of the plastic part.
  • the solution according to the invention can also be used with a plastic part which is screwed to the other component without using metallic inserts.
  • the geometry of the through hole of the metallic insert provided according to the invention is provided directly on the fastening hole of the plastic part.
  • the fastening hole of the plastic part has a non-circular cross-section, the largest diametrical dimension of which is in the longitudinal direction of the plastic part and the smallest diametrical dimension of which is designed for tight guidance of the fastening screw, and that at least one projection is provided on the wall of the through hole of the plastic part is, which projects transversely to the longitudinal direction into the interior of the mounting hole in order to hold the mounting screw captive in the plastic part.
  • the fastening screw can only be tightened with a lower pretensioning force and, in addition, the plastic of the plastic part settles over time, the fastening screw can loosen gradually. purpose It is therefore moderately provided that the thread of the fastening screw in the other component is secured by an adhesive connection, as is basically known in the prior art.
  • FIG. 1 shows a section through an arrangement of plastic part, metallic insert and fastening screw designed according to the invention, which is connected to another component;
  • FIG. 2 shows a section rotated through 90 ° of the arrangement shown in FIG. 1;
  • Fig. 3 is a plan view of the metallic insert of the arrangement in Figs. 1 and 2.
  • a plastic part 1 is fastened to another component 2 by a screw connection.
  • the plastic part 1 can be, for example, the flange of an intake manifold of an internal combustion engine, while the other component 2 is a cylinder head of the internal combustion engine. It goes without saying that in such an application a plurality of such screw connections are provided at a distance from one another in a longitudinal direction L (see the double arrow in FIG. 2), but only one such screw connection is shown for the sake of simplicity. Otherwise, other applications are also conceivable in which a plastic part is fastened to another component by means of several screw connections.
  • the plastic part 1 has a continuous fastening hole 3, through which a fastening screw 4 extends and is screwed to a threaded bore of the other component 2 aligned with the fastening hole 3.
  • the fastening screw 4 is a conventional Before expansion screw with a head 5, a screw shaft 6 and a threaded section 7.
  • the diameter of the threaded shaft 6 corresponds to the basic diameter of the thread of the threaded section 7.
  • a metallic insert 8 is inserted in the form of a sleeve, the axial length of which essentially corresponds to the length of the mounting hole 3.
  • the metallic insert 8 thus acts as a "torque limiter", which limits the clamping forces transmitted to the plastic part 1 when the plastic part 1 is screwed to the other component 2.
  • the through hole 9 of the metallic insert 8 has an oval shape, as can be seen from FIG. 3.
  • another elongated shape such as an approximately rectangular shape, could also be used.
  • the largest diametrical dimension of the through hole 9 of the metallic insert 8 lies in the longitudinal direction L, in which the greatest tolerances occur.
  • the threaded shaft 6 of the fastening screw 4 then has a relatively large play S in relation to the metallic insert 8 in the longitudinal direction L.
  • the metallic insert 8 expediently has a uniform wall thickness, so that the circumference of the metallic insert 8 has the same elongated shape in cross section as the through hole 9.
  • the metallic insert 8 thus has an oval or elongated cross section, to which the cross section of the fastening hole 3 of the plastic part 1 is expediently adapted.
  • the through hole 9 of the metallic insert 8 has a diametrical dimension in a direction transverse to the longitudinal direction L, which ensures tight guidance of the fastening screw 4 in the metallic insert 8. Furthermore, two diametrically opposite projections 10 in the form of ramps are provided on the wall of the through hole 9 of the metallic insert 8, which ramps cross the longitudinal direction L into the interior of the
  • the projections 3 are designed and dimensioned such that they engage the thread of the fastening screw 4 when the fastening screw 4 is moved axially through the metallic insert 8. To be more precise, the thread of the fastening screw 4 is screwed through the projections 10 so that the screw 4 is introduced into the metallic insert 8 by turning, similarly to a threaded connection.
  • the oval or elongated shape of the metallic insert 8 and thus the through-hole 9 allows a compensation of tolerances of the fastening hole 3 in the longitudinal direction L.
  • the two projections 10 and the tight guidance of the fastening screw 4 in a direction transverse to the longitudinal direction L ensure a captive mounting of the fastening screw 4 in the metallic insert 8 before fastening the plastic part 1 to the other component 2.
  • the two projections 10 are provided on the (in FIG. 1) upper axial end of the metallic insert 8 in order to insert the threaded section 7 into the through hole 9 of the metallic one To be able to move in, as will be explained in more detail.
  • the metallic insert 8 is provided on its circumference with an undercut in the form of a shoulder 11, which interacts with a counter shoulder 12 of an annular projection in the fastening hole 3 of the plastic part 1, as will also be explained in more detail.
  • the component 1, the metallic inserts 8 and the fastening screws 4 are preassembled in order to form a unit to be handled separately.
  • the metallic inserts 8 are first inserted from below (in FIGS. 1 and 2) into the associated fastening holes 3 in the plastic part 1.
  • the shoulder 11 provided on the respective metallic insert 8 ensures that the insert 8 is inserted in the correct orientation in the associated fastening hole 3, so that the two projections 10 come to rest on the axial end of the through hole 3 facing away from the component 2.
  • the paragraph 11 of the insert 8 with the counter shoulder 12 in the mounting hole 3, the axial position of the insert 8 is secured in the rest.
  • the threaded section 7 of the fastening screws 4 can in each case be completely drawn into the through hole 9 of the associated metallic insert 8.
  • the pre-assembled unit made of plastic part 1, inserts 8 and fastening screws 4 is then placed on the top of the other component 2. Should one or more of the fastening screws 4 protrude with their threaded section 7 from their associated metallic insert 8, the shoulder 11 of the relevant metallic insert 8 in cooperation with the counter shoulder 12 prevents the fastening screw 4 from protruding together with the metallic insert 8 the mounting hole 3 is pushed out.
  • the fastening screw of the centering screw connection (not shown) arranged in a central area is first tightened. Then the other fastening screws 4 are tightened.
  • the clearance S caused by the elongated shape of the metallic insert 8 enables tolerances or a center offset of the fastening holes 3 to be compensated for in relation to the threaded bores of the other component 2 in the longitudinal direction L, so that the fastening screws 4 can be easily inserted into the associated threaded bores of the other component 2 can be screwed.

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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 ensemble constitué d'une pièce en plastique (1) et d'un insert métallique (8) avec vis imperdable (4). L'insert métallique (8) peut être introduit dans un trou de fixation (3) de la pièce en plastique (1), afin de limiter des forces de fixation transmises à la pièce en plastique (1) lorsque cette pièce en plastique (1) est vissée sur un autre composant (2). Le trou de passage de l'insert métallique (8) présente une section transversale ovale, dont la plus grande dimension diamétrale se trouve dans le sens longitudinal (L) de la pièce en plastique, ce qui permet de compenser des tolérances dans le sens longitudinal. Le trou de passage (9) de l'insert métallique (8) est pourvu de deux saillies opposées (10) sous forme de rampes, qui maintiennent la vis de fixation (4) de façon imperdable lors de son insertion dans la pièce en plastique (1).
PCT/EP2004/050541 2003-05-05 2004-04-16 Ensemble constitue d'une piece en plastique et d'un insert metallique avec vis imperdable WO2004099632A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003119978 DE10319978B4 (de) 2003-05-05 2003-05-05 Anordnung aus Kunststoffteil und metallischem Einsatz mit unverlierbarer Schraube
DE10319978.0 2003-05-05

Publications (1)

Publication Number Publication Date
WO2004099632A1 true WO2004099632A1 (fr) 2004-11-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/050541 WO2004099632A1 (fr) 2003-05-05 2004-04-16 Ensemble constitue d'une piece en plastique et d'un insert metallique avec vis imperdable

Country Status (2)

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DE (1) DE10319978B4 (fr)
WO (1) WO2004099632A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2472981C1 (ru) * 2011-06-17 2013-01-20 Открытое акционерное общество "Авиадвигатель" Болтовое соединение вращающихся деталей
EP2592285A1 (fr) 2011-11-11 2013-05-15 Volvo Car Corporation Élément d'ensemble de vis
EP2636911A1 (fr) 2012-03-06 2013-09-11 MAHLE International GmbH Agencement de fixation
CN103322009A (zh) * 2013-05-20 2013-09-25 昆山神昌精密金属制品有限公司 一种紧固件
CN105840602A (zh) * 2016-06-06 2016-08-10 东南大学 一种连接装置及链接方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012209165B4 (de) * 2012-05-31 2017-08-24 Lisa Dräxlmaier GmbH Unverlierbares Befestigungssystem mit Toleranzausgleich
DE102015200505A1 (de) 2015-01-15 2016-07-21 Continental Automotive Gmbh Metallisches Haltelement zum Einleiten eines Drehmoments in ein Kunststoffgehäuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8524089U1 (de) * 1985-08-22 1986-01-16 Clavey, Willi, 3057 Neustadt Einstellbare Befestigungsvorrichtung für Wandverkleidungsplatten
DE19651838A1 (de) * 1995-12-23 1997-06-26 Bergner Richard Gmbh Co Zu verschraubendes Kunststoffmontageteil mit Dichtung
DE10048279A1 (de) * 2000-09-29 2002-04-25 Audi Ag Einrichtung zum reproduzierbaren Befestigen eines ersten Bauteiles an einem zweiten Bauteil
EP1229257A2 (fr) * 2001-02-02 2002-08-07 Kamax-Werke Rudolf Kellermann GmbH & Co. KG Dispositif d'assemblage constitué par une pièce à assembler et au moins une vis

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523932C2 (de) * 1994-07-21 1997-02-20 Kostal Leopold Gmbh & Co Kg Verliersicherung für in Bauteile lose eingesetzte Schrauben

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8524089U1 (de) * 1985-08-22 1986-01-16 Clavey, Willi, 3057 Neustadt Einstellbare Befestigungsvorrichtung für Wandverkleidungsplatten
DE19651838A1 (de) * 1995-12-23 1997-06-26 Bergner Richard Gmbh Co Zu verschraubendes Kunststoffmontageteil mit Dichtung
DE10048279A1 (de) * 2000-09-29 2002-04-25 Audi Ag Einrichtung zum reproduzierbaren Befestigen eines ersten Bauteiles an einem zweiten Bauteil
EP1229257A2 (fr) * 2001-02-02 2002-08-07 Kamax-Werke Rudolf Kellermann GmbH & Co. KG Dispositif d'assemblage constitué par une pièce à assembler et au moins une vis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2472981C1 (ru) * 2011-06-17 2013-01-20 Открытое акционерное общество "Авиадвигатель" Болтовое соединение вращающихся деталей
EP2592285A1 (fr) 2011-11-11 2013-05-15 Volvo Car Corporation Élément d'ensemble de vis
US8747040B2 (en) 2011-11-11 2014-06-10 Volvo Car Corporation Screw assembly element
EP2636911A1 (fr) 2012-03-06 2013-09-11 MAHLE International GmbH Agencement de fixation
DE102012203520A1 (de) * 2012-03-06 2013-09-12 Mahle International Gmbh Befestigungsanordnung
CN103322009A (zh) * 2013-05-20 2013-09-25 昆山神昌精密金属制品有限公司 一种紧固件
CN105840602A (zh) * 2016-06-06 2016-08-10 东南大学 一种连接装置及链接方法
CN105840602B (zh) * 2016-06-06 2018-06-05 东南大学 一种连接装置及连接方法

Also Published As

Publication number Publication date
DE10319978A1 (de) 2004-12-02
DE10319978B4 (de) 2005-10-13

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