FR2483308A1 - Dispositif de reglage et de fixation sur materiaux plastiques - Google Patents

Dispositif de reglage et de fixation sur materiaux plastiques Download PDF

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Publication number
FR2483308A1
FR2483308A1 FR8012028A FR8012028A FR2483308A1 FR 2483308 A1 FR2483308 A1 FR 2483308A1 FR 8012028 A FR8012028 A FR 8012028A FR 8012028 A FR8012028 A FR 8012028A FR 2483308 A1 FR2483308 A1 FR 2483308A1
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Prior art keywords
spring
heating
thermoplastic components
assembly
concentric
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FR8012028A
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FR2483308B1 (fr
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Claude Lombard
Camille Labaune
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Renault SAS
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Renault SAS
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Publication of FR2483308B1 publication Critical patent/FR2483308B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/362—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B29C65/46—Joining a heated non plastics element to a plastics element heated by induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B29C65/68—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined using auxiliary shrinkable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8227—Transmission mechanisms using springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

DISPOSITIF DE REGLAGE ET DE FIXATION SUR MATERIAU THERMOPLASTIQUE REMARQUABLE EN CE QU'IL COMPREND UNE PREMIERE PIECE 3, 14, 17 MUNIE D'UNE GORGE DANS LAQUELLE SE TROUVE UN RESSORT 5, 15, 19 A L'ETAT TENDU ET UNE DEUXIEME PIECE 2, 1, 14 EN MATERIAU THERMOPLASTIQUE DANS LAQUELLE S'ENGAGE LE RESSORT SOUS LE DOUBLE EFFET DE SON CHAUFFAGE PAR DES MOYENS ELECTRIQUES ET DE SA DETENTE. APPLICATION A LA FABRICATION DE CAPTEURS OU D'ACTIONNEURS ELECTRIQUES.

Description

Dispositif. de réglage et de fixation sur matériaux plastiques
La présente invention est relative à un dispositif de réglage et de fixation d'une première pièce munie d'une gorge dans ou sur une deu xième pièce en matière thermoplastique. Les deux pièces sont rendues solidaires par un élément ressort ayant certaines caractéristiques particulières et qui peut pénétrer par échauffement dans la pièce en matériau thermoplastique immobilisant définitivement les deux pièces à 11 emplacement choisi, l'élément ressort restant en place.
Un tel dispositif trouve son application dans la construction mécanique et notamment pour la fabrication de capteurs ou d'actionneurs électriques lorsque ceux-ci nécessitent un réglage à la production.
Ces dispositifs de l'art antérieur comprennent notamment des collages, des rondelles dentées pénétrant par pression dans le thermoplastique, des soudures par ultra-sons ou action de la chaleur, etc. Ces dispositifs ont fait la preuve de leur efficacité mais apportent le plus souvent des contraintes, lors de la réalisation, qui peuvent être à titre indicatif de forme, de propriété, de tolérances.
Le dispositif, objet de la présente invention, présente l'avantage d'apporter de nouvelles libertés dans le dessin des pièces et de ne faire intervenir le chauffage qu'a un point bien précis n'entraînant pas de dégradation sur le reste de la pièce.
L'invention sera maintenant décrite en se référant aux quatre figures annexées, données à titre d'exemple non limitatif de réalisation.
La figure 1 est une vue en coupe qui montre trois exemples de fixation dont deux avec réglage sur un capteur de pression à membrane souple dont tous les éléments, constituant l'enveloppe extérieure, sont réalisés en matériaux plastiques ; les figures 2 et 3 sont des vues partielles en bout du capteur à une échelle agrandie montrant plus en détail l'élément ressort et la lumière d'accès à ses extrémités per mettant un chauffage par résistance de l'élément ressort ; là figure 4 est une variante de réalisation qui ne demande pas de lumière d'accès, le chauffage de l'élément ressort étant obtenu dans un champ de haute fréquence.
Revenant à la figure 1, nous distinguons sur celle-ci une calotte en matière plastique thermofusible 1 portant en son centre un tube 2 dans lequel vient se loger un bouchon 3 portant une gorge 4 circulaire dans laquelle vient se placer un ressort 5 en forme de circlip et portant en 6 sur la face intérieure du tube 2. A l'état libre, le diamètre extérieur du ressort 5 est plus grand que le diamètre intérieur du tube 2.
Le ressort est donc tendu.
Sur la figure 2, à une échelle plus grande, sont indiqués le tube 2, le bouchon 3, le ressort 5 dont les extrémités 7 et 8 en biseau sont visibles à travers la lumière d'accès 29.
Sur la figure 3, n'ont été représentées que les extrémités 7 et 8 du ressort 5 entre lesquelles viennent se placer, au moment de la fixation, des contacts mobiles 9 et 10 tenus par un élément isolant 11 ayant certaines qualités d'élasticité pour rattraper les différences d'angle entre les biseaux du ressort et les contacts mobiles. Ces contacts mobiles sont reliés à une source de courant non représentée et appliqués avec une force F sur les extrémités 7 et 8 du ressort 5.
Le bouchon 3 peut donc être positionné dans le tube 2 par un organe non représenté, éventuellement à la main, puis fixé en place par échauffement du ressort 5 qui pénètre dans le tube 2 et assure donc après refroidissement une fixation stable.
La position et l'effort, qu'exerce, à l'intérieur de l'appareil, un ressort hélicoidal 12 (figure 1), peuvent donc être réglés par ce moyen.
Les deux autres fixations prévues sur la figure 1 sont celles d'une membrane souple 13 bloquée entre la calotte 1 et un corps 14 par l'effet d'un ressort 15 placé dans une gorge 16 et celle du fond 17 portant des éléments détecteurs 18 du mouvement de la membrane 13. Ce fond 17 est immobilisé à l'intérieur du corps 14 par un ressort 19 placé dans une gorge 20. L'immobilisation dudit fond 17 n'intervient qu'après réglage de position en fonction des réglages électriques obtenus avec le capteur.
La figure 4 est une variante de réalisation qui ne nécessite pas de lumière d'accès. Les extrémités 7 et 8 du ressort 5 sont en c#ontact et le chauffage du ressort 5 est obtenu par un champ haute fréquence développé par une spire conductrice 21 entourant le tube 2.
Le ressort 5 n'est pas nécessairement métallique mais peut être constitué par un élastomère à haut point de fusion et à pertes diélectriques beaucoup plus fortes que celles du tube 2. Cette variante peut s'appliquer bien entendu aux autres fixations représentées figure 1.
La gorge et le ressort peuvent, sans changer le caractère de l'invention, être à l'extérieur de la pièce en matériau thermoplastique. Dans ce cas, le ressort devra avoir à l'état libre un diamètre intérieur plus petit que celui de la pièce sur laquelle il se monte.
Les ressorts métalliques ou non peuvent être de toutes formes et notamment plats et ondulés en serrage dans la gorge pour éviter tout jeu axial et être recouverts sur leurs faces latérales d'un vernis réfractaire isolant retardant la transmission latérale de la chaleur sur les parois de la gorge.

Claims (6)

REVENDICATIONS
1. Dispositif de réglage et de fixation sur matériau thermoplastique, caractérisé en ce qu'il comprend une première pièce (3, 14, 17) munied'une gorge dans laquelle se trouve un ressort (5, 15, 19) à l'état tendu et une deuxième pièce (2, 1, 14) en matériau thermoplastique dans laquelle s'engage le ressort sous le double effet de son chauffage par des moyens électriques et de sa détente.
2. Dispositif selon la revendication 1, caractérisé en ce que la première et la deuxième pièce sont de révolution et concentriques.
-3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu des moyens mobiles de chauffage par champ haute fréquence du ressort à l'intérieur de la gorge, ledit ressort étant constitué de tout matériau susceptible de s'échauffer sous l'action du champ haute fréquence.
4. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu des moyens mobiles de contact électrique permettant de faire circuler un courant dans le ressort.
5. Dispositif selon la revendication 4, caractérisé en ce que les extrémités du ressort sont en forme de biseau ouvert du côté opposé à celui sur lequel le ressort exerce sa tension.
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que la première pièce est munie d'une ou plusieurs lumières permets nit le passage des moyens mobiles de contact vers les extrémités du ressort.
FR8012028A 1980-05-30 1980-05-30 Dispositif de reglage et de fixation sur materiaux plastiques Granted FR2483308A1 (fr)

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FR2483308B1 FR2483308B1 (fr) 1983-03-11

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270957A2 (fr) * 1986-12-11 1988-06-15 GRUPPO INDUSTRIALE ERCOLE MARELLI S.p.A. Procédé pour fabriquer des rotors pour les axes de moteurs électriques et appareil pour la réalisation de ce procédé
EP0298715A2 (fr) * 1987-07-07 1989-01-11 N.V. Raychem S.A. Dispositif d'étanchéité
FR2742691A1 (fr) * 1995-12-22 1997-06-27 Etex De Rech Tech Soc Element de raccord thermoplastique pour un assemblage de pieces par soudage selon une surface de jonction ouverte
WO1997027779A1 (fr) * 1996-01-31 1997-08-07 Braun Aktiengesellschaft Procede et dispositif pour fixer une grille dans un boitier, en particulier un boitier de seche-cheveux
FR2748415A1 (fr) * 1996-05-09 1997-11-14 Etex De Rech Tech Soc Element de raccord pour un assemblage de pieces en materiaux thermoplastiques par soudage et procede de fabrication d'un tel element
DE102004001378A1 (de) * 2004-01-09 2005-08-04 Zf Friedrichshafen Ag Sprengringsicherung
CN113661049A (zh) * 2019-04-12 2021-11-16 采埃孚股份公司 在两个构件之间建立连接的方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270957A2 (fr) * 1986-12-11 1988-06-15 GRUPPO INDUSTRIALE ERCOLE MARELLI S.p.A. Procédé pour fabriquer des rotors pour les axes de moteurs électriques et appareil pour la réalisation de ce procédé
EP0270957A3 (en) * 1986-12-11 1989-01-11 Gruppo Industriale Ercole Marelli S.P.A. Process for the manufacture of a rotor for shafts of electric motors, and apparatus for the execution of the process
EP0298715A2 (fr) * 1987-07-07 1989-01-11 N.V. Raychem S.A. Dispositif d'étanchéité
EP0298715A3 (fr) * 1987-07-07 1991-05-08 N.V. Raychem S.A. Dispositif d'étanchéité
FR2742691A1 (fr) * 1995-12-22 1997-06-27 Etex De Rech Tech Soc Element de raccord thermoplastique pour un assemblage de pieces par soudage selon une surface de jonction ouverte
WO1997027779A1 (fr) * 1996-01-31 1997-08-07 Braun Aktiengesellschaft Procede et dispositif pour fixer une grille dans un boitier, en particulier un boitier de seche-cheveux
FR2748415A1 (fr) * 1996-05-09 1997-11-14 Etex De Rech Tech Soc Element de raccord pour un assemblage de pieces en materiaux thermoplastiques par soudage et procede de fabrication d'un tel element
DE102004001378A1 (de) * 2004-01-09 2005-08-04 Zf Friedrichshafen Ag Sprengringsicherung
DE102004001378B4 (de) * 2004-01-09 2018-10-31 Zf Friedrichshafen Ag Sprengringsicherung
CN113661049A (zh) * 2019-04-12 2021-11-16 采埃孚股份公司 在两个构件之间建立连接的方法
CN113661049B (zh) * 2019-04-12 2023-08-18 采埃孚股份公司 在两个构件之间建立连接的方法

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