FR2637330A3 - Screw connection for construction elements of different materials - Google Patents

Screw connection for construction elements of different materials Download PDF

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Publication number
FR2637330A3
FR2637330A3 FR8912968A FR8912968A FR2637330A3 FR 2637330 A3 FR2637330 A3 FR 2637330A3 FR 8912968 A FR8912968 A FR 8912968A FR 8912968 A FR8912968 A FR 8912968A FR 2637330 A3 FR2637330 A3 FR 2637330A3
Authority
FR
France
Prior art keywords
plastic
screw connection
hole
screw
threaded
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.)
Granted
Application number
FR8912968A
Other languages
French (fr)
Other versions
FR2637330B3 (en
Inventor
Heinrich Gerstacker
Horst Meister
Franz Neughoefer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2637330A3 publication Critical patent/FR2637330A3/en
Application granted granted Critical
Publication of FR2637330B3 publication Critical patent/FR2637330B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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
    • F16B35/041—Specially-shaped shafts
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Connection Of Plates (AREA)
  • Conductive Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

Screw connection for construction elements, in particular for elements for constructing household appliances, one of which elements is a component made from plastic and the other a metal component, composed of a screw-type linking element the threaded shank of which is screwed into the plastic part, characterised in that a thickening or collar 10 is produced on the threaded shank 4 between the threaded part 4' and the head 1 of the linking element 1, the diameter of the thickening or of the collar 10 being chosen to be greater than the diameter of a through hole 6 placed upstream in the tapped bore 5 made in the plastic part 3.

Description

L'invention concerne une liaison vis pour éléments de construction, en particulier pour éléments de construction d'appareils ménagers, dont l'un est une pièce en matière plastique et l'autre une pièce métallique se composant d'un élément de liaison t vis dont la tige filetée est vissée dans la partie en matière plastique. The invention relates to a screw connection for construction elements, in particular for construction elements for household appliances, one of which is a plastic part and the other a metal part consisting of a screw connection element. the threaded rod of which is screwed into the plastic part.

On sait que certaines matières plastiques, par exemple des matières thermoplastiques, fluent déjà aux températures ambiantes et pour des sollicitations telles que celles qui surviennent par exemple dans les liaisons a vis. Ce que l'on appelle le fluage de ces matières plastiques est encore renforce si ces sollicitations ont lieu " des températures élevées. En outre, dans le cas d'une vis en métal (acier) et d'une partie en matière thermoplastique, il y a un appairage des matériaux qui présente un coefficient de frottement très faible. C'est pourquoi il y a toujours le risque, surtout pour les appareils ménagers, qui sont encore salement exposés pendant leur fonctionnement ' certaines secousses, que les vis puissent se desserrer automatiquement de la partie en matière plastique. It is known that certain plastics, for example thermoplastics, already flow at ambient temperatures and for stresses such as those which occur for example in screw connections. The so-called creep of these plastics is further reinforced if these stresses take place at high temperatures. In addition, in the case of a metal (steel) screw and a part made of thermoplastic material, it there is a pairing of materials which has a very low coefficient of friction. This is why there is always the risk, especially for household appliances, which are still badly exposed during their operation 'certain jolts, that the screws may loosen automatically from the plastic part.

Le but de l'invention est de créer une liaison > ajustement de forme d'une configuration simple entre la pièce de construction en matière plastique et l'élément 2 vis reliant la pièce métallique ces ces dernières.  The object of the invention is to create a connection> shape adjustment of a simple configuration between the plastic construction part and the 2-screw element connecting the metal part to the latter.

Ce problème est résolu, selon l'invention, par le fait qu'un épaississement ou une collerette est réalisé sur la tige filetée, entre la partie filetée et la tête de l'élément de liaison et que le diamètre de l'épaissis- sement ou de la collerette est choisi supérieur au diamètre d'un trou traversant placé en amont de l'alésage taraudé pratiqué dans la partie en matière plastique. This problem is solved, according to the invention, by the fact that a thickening or a flange is produced on the threaded rod, between the threaded part and the head of the connecting element and that the diameter of the thickening or the flange is chosen to be greater than the diameter of a through hole placed upstream of the threaded bore made in the plastic part.

Par l'invention, on crée entre l'élément de liaison R visser, la pièce en matière plastique et la pièce métallique a' y fixer, un ajustement de forme qui exclut tout fluage de la matière plastique dans la zone filetée de l'élément de liaison 4 vis, même sous l'effet d'une force, et le fait de surmonter cette force ne suffit plus provoquer le couple de rotation agissant sur la tige filetée, provoquant le dévissage automatique de l'élément de liaison. By the invention, there is created between the connecting element R to screw, the plastic part and the metal part to be fixed thereto, a shape adjustment which excludes any creep of the plastic material in the threaded zone of the element. connecting 4 screws, even under the effect of a force, and the fact of overcoming this force is no longer sufficient to cause the torque acting on the threaded rod, causing the automatic unscrewing of the connecting element.

Diverses autres caractéristiques de l'invention ressortent de la description détaillée qui suit. Various other characteristics of the invention will emerge from the detailed description which follows.

Un mode de réalisation de l'invention est représenté t titre d'exemple non limitatif sur le dessin annexé. An embodiment of the invention is shown by way of nonlimiting example in the accompanying drawing.

La Fig. 1 est une coupe-élévation partielle d'une
pièce de construction en matière
plastique.Fig. 1 is a partial elevation view of a
construction piece material
plastic.

La Fig. 2 est une coupe-élévation partielle d'une
pièce de construction métallique o
fixer sur la pièce de la Fig. 1.Fig. 2 is a partial sectional elevation of a
metal building part o
fix on the part of fig. 1.

La fig. 3 est une vue latérale de l'élément de
liaison avec une tête six pans.Fig. 3 is a side view of the element of
connection with a hexagon head.

On désigne par 1 un élément de liaison se compo sant d'une vie n tête six six pans, servant a la fixation d'une pièce de construction 2 sur une pièce de construction 3 en matière plastique et qui est visse S cet effet à l'aide de la tige filetée 4 dans la pièce de construction 3 en matière plastique. La pièce de construction 3 en matière plastique comporte un trou taraudé 5 qui est destiné & la partie filetée 4' de l'élément de liaison 1 et en amont duquel est placé un trou traversant 6 d'un diamètre un peu plus grand. Le trou traversant 6 fait partie d'une bosse ou d'un appendice 7 s'écartant de la pièce de construction 3 en matière plastique.La paroi de l'appendice 7 est interrompue par des fentes 8 s'étendant dans le sens d'introduction de l'élément de liaison 1 et ainsi subdivisée en deux demi-coquilles 9,9'. L'élément de liaison 1 à visser présente entre sa tête à six pans 1' et la partie filetée 4' un épaississement ou une collerette 10 non fileté, dont le diamètre est un peu plus grand que le diamètre du trou traversant 6 et dont la longueur est de manière appropriée égale la longueur du trou traversant 6 pratiqué dans la pièce 3 en matière plastique. Designate by 1 a connecting element consisting of a life n hexagon head, used for fixing a building part 2 on a plastic building part 3 and which is screwed S for this purpose to the using the threaded rod 4 in the plastic construction part 3. The plastic construction part 3 has a threaded hole 5 which is intended for the threaded part 4 ′ of the connecting element 1 and upstream of which is placed a through hole 6 with a slightly larger diameter. The through hole 6 is part of a bump or an appendage 7 deviating from the plastic construction part 3. The wall of the appendage 7 is interrupted by slots 8 extending in the direction of introduction of the connecting element 1 and thus subdivided into two half-shells 9.9 ′. The connecting element 1 to be screwed has between its hexagon head 1 'and the threaded part 4' a thickening or a flange 10 without thread, the diameter of which is slightly larger than the diameter of the through hole 6 and the length is suitably equal to the length of the through hole 6 made in the plastic part 3.

La pièce de construction métallique 2 h fixer dans la pièce de construction 3 en matière plastique est pourvue d'une partie de réception 11 correspondant à l'appendice 7 de la pièce de construction 3 en matière plastique, ou entourant l'appendice 7, et présentant une ouverture traversante 12 destinée > l'élément de liaison 1. The metal construction part 2 h fixed in the plastic construction part 3 is provided with a receiving part 11 corresponding to the appendix 7 of the plastic construction part 3, or surrounding the appendix 7, and having a through opening 12 intended for> the connecting element 1.

Après assemblage des deux pièces 2 et 3, l'appendice 7 étant alors entouré par l'élément de réception 11, l'élément de liaison 1 est introduit et tourné dans l'alésage taraudé 5 de la pièce de construction 3 en matière plastique. Du fait de la collerette 10 de l'élément de liaison 1 qui pénètre dans le trou traversant 6 pratiqué dans la pièce 3 en matière plastique, les demi-coquilles 9,9' de l'appendice 7 sont écartées force par pression du fait de son diamètre un peu plus grand, et l'ajustement de forme, entre les pièces 2 et 3 relier ainsi que l'élément de liaison 1, est ainsi réalisé. La paroi du trou traversant 6 est affaiblie par un amincissement du matériau ou un amoindrissement du matériau.  After assembly of the two parts 2 and 3, the appendix 7 then being surrounded by the receiving element 11, the connecting element 1 is introduced and turned into the threaded bore 5 of the plastic construction part 3. Due to the flange 10 of the connecting element 1 which enters the through hole 6 made in the plastic part 3, the half-shells 9.9 ′ of the appendix 7 are forcefully pushed apart due to its slightly larger diameter, and the shape adjustment, between the parts 2 and 3 to connect as well as the connecting element 1, is thus achieved. The wall of the through hole 6 is weakened by a thinning of the material or a weakening of the material.

Claims (6)

REVENDICATIONS 1. Liaison à vis pour éléments de construction, en particulier pour éléments de construction d'appareils ménagers, dont l'un est une pièce en matière plastique et l'autre une pièce métallique se composant d'un élément de liaison A vis dont la tige filetée est vissée dans la partie en matière plastique, caractérisée en ce que 1. Screw connection for construction elements, in particular for construction elements for household appliances, one of which is a plastic part and the other a metal part consisting of a screw connection element, the threaded rod is screwed into the plastic part, characterized in that - un épaississement ou une collerette (10) est réalisée sur la tige filetée (4), entre la partie filetée (4') et la tête (1') de l'élément de liaison (1), - a thickening or a flange (10) is produced on the threaded rod (4), between the threaded part (4 ') and the head (1') of the connecting element (1), - le diamètre de l'épaississement ou de la collerette (10) est choisi supérieur au diamètre d'un trou traversant (6) placé en amont de l'alésage taraudé (5) pratiqué dans la partie en matière plastique (3). - The diameter of the thickening or the flange (10) is chosen to be greater than the diameter of a through hole (6) placed upstream of the threaded bore (5) formed in the plastic part (3). 2. Liaison 9 vis selon la revendication 1, caractérisée en ce que la paroi du trou traversant (6) est affaiblie par un amincissement du matériau ou un amoindrissement du matériau. 2. 9 screw connection according to claim 1, characterized in that the wall of the through hole (6) is weakened by a thinning of the material or a weakening of the material. 3. Liaison ;; vis selon la revendication 1, caractérisée en ce que la paroi du trou traversant (6) est interrompue par des fentes (8) s'étendant dans la direction d'introduction de l'élément de liaison (1). 3. Liaison ;; screw according to claim 1, characterized in that the wall of the through hole (6) is interrupted by slots (8) extending in the direction of insertion of the connecting element (1). 4. Liaison a vis selon la revendication 1, caractérisée en ce que dans le cas d'agencement du trou traversant (6) dans un appendice (7) s'écartant de la partie (3) en matière plastique, sa paroi est subdivisée en deux demi-coquilles (9,9') par des fentes (8). 4. Screw connection according to claim 1, characterized in that in the case of arrangement of the through hole (6) in an appendage (7) deviating from the part (3) of plastic material, its wall is subdivided into two half-shells (9,9 ') by slots (8). 5. Liaison C vis selon la revendication 4, caractérisée en ce qu'une contre-pièce (11) destinée ,A l'appendice (7) est réalisée sur la partie métallique (2) 9 relier à la partie (3) en matière plastique. 5. Connection C screw according to claim 4, characterized in that a counter-piece (11) intended, A appendix (7) is formed on the metal part (2) 9 connect to the part (3) in material plastic. 6. Liaison à vis selon l'une des revendications 1 à 5, caractérisée en ce que la longueur de la collerette (10) est à peu près de la longueur du trou traversant (6) pratiqué dans la partie (3) en matière plastique.  6. Screw connection according to one of claims 1 to 5, characterized in that the length of the flange (10) is approximately the length of the through hole (6) made in the part (3) of plastic material. .
FR898912968A 1988-10-05 1989-10-04 SCREW CONNECTION FOR ELEMENTS OF CONSTRUCTION OF DIFFERENT MATERIALS Expired - Fee Related FR2637330B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8812510U DE8812510U1 (en) 1988-10-05 1988-10-05 Screw connection for components made of different materials

Publications (2)

Publication Number Publication Date
FR2637330A3 true FR2637330A3 (en) 1990-04-06
FR2637330B3 FR2637330B3 (en) 1990-08-31

Family

ID=6828561

Family Applications (1)

Application Number Title Priority Date Filing Date
FR898912968A Expired - Fee Related FR2637330B3 (en) 1988-10-05 1989-10-04 SCREW CONNECTION FOR ELEMENTS OF CONSTRUCTION OF DIFFERENT MATERIALS

Country Status (3)

Country Link
DE (1) DE8812510U1 (en)
FR (1) FR2637330B3 (en)
IT (1) IT218876Y1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003031831A1 (en) * 2001-10-09 2003-04-17 Sedie Friuli Di Fornasarig Srl Self-threading attachment screw
CN109334587A (en) * 2018-11-02 2019-02-15 奇瑞汽车股份有限公司 A kind of automotive plastic parts assembling structure
TWI667419B (en) * 2018-06-08 2019-08-01 上得國際貿易有限公司 Connecting device and combined structure including connecting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003031831A1 (en) * 2001-10-09 2003-04-17 Sedie Friuli Di Fornasarig Srl Self-threading attachment screw
TWI667419B (en) * 2018-06-08 2019-08-01 上得國際貿易有限公司 Connecting device and combined structure including connecting device
CN109334587A (en) * 2018-11-02 2019-02-15 奇瑞汽车股份有限公司 A kind of automotive plastic parts assembling structure

Also Published As

Publication number Publication date
IT8921872U1 (en) 1991-04-04
FR2637330B3 (en) 1990-08-31
IT218876Z2 (en) 1992-11-10
DE8812510U1 (en) 1989-11-02
IT218876Y1 (en) 1992-11-10
IT8921872V0 (en) 1989-10-04

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