EP1479886A1 - Water outlet assembly for an internal combustion engine and method for manufacturing - Google Patents

Water outlet assembly for an internal combustion engine and method for manufacturing Download PDF

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Publication number
EP1479886A1
EP1479886A1 EP04102246A EP04102246A EP1479886A1 EP 1479886 A1 EP1479886 A1 EP 1479886A1 EP 04102246 A EP04102246 A EP 04102246A EP 04102246 A EP04102246 A EP 04102246A EP 1479886 A1 EP1479886 A1 EP 1479886A1
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EP
European Patent Office
Prior art keywords
housing
water outlet
claws
thermostatic valve
thermostatic
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
EP04102246A
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German (de)
French (fr)
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EP1479886B1 (en
Inventor
Philippe Trotin
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Mann and Hummel GmbH
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Mann and Hummel GmbH
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Publication date
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Publication of EP1479886A1 publication Critical patent/EP1479886A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details

Definitions

  • the present invention relates to a water outlet housing for an internal combustion engine, intended to be fixed on the opening of the engine cylinder head water circuit, comprising an inlet and a outlet connected by a passage, equipped with a thermostatic valve provided a thermostatic capsule formed by two parts, one of which is fixed relative to the housing and the other, mobile, cooperates with a surface of the housing forming a valve seat, the movable part closing the passage leaning against the housing by a retaining member through of a return spring, and its opening controlled by the expansion of the thermostatic capsule against the action of the spring.
  • the present invention aims to develop a box of water outlet fitted with a thermostatic valve of the type defined above, which is quick to assemble, takes up little space and installs easily on the metal cylinder head of an engine.
  • the assembly of the water outlet housing according to the invention is extremely simple since after installing the thermostatic valve in the housing, the assembly is blocked by the retaining member in the shape of a stirrup itself crimped in a simple way to the case.
  • the box can thus be transported assembled until it is mounted on the cylinder head or more generally the engine controlled water outlet.
  • the thermostatic valve which expands in functioning and which tends to dislodge or move aside the metal bracket of the case, now leans against the cylinder head since the stirrup is locked against the cylinder head without involving the projecting parts; these are only used to hold the stirrup for packaging and transport to assembly.
  • Projecting parts also prevent movement of the bracket in the housing after its installation, under the effect of currents of water in the cooling circuit.
  • thermoplastic material and / or thermosetting This allows to make the housing in thermoplastic material and / or thermosetting, simpler and more economical to manufacture than a box. In addition, it will be lighter.
  • the arms of the stirrup are folded relative to the plane of the cup to extend by a part parallel to this plane and comprising the claws. So the cup with spring not only provides the support function for the spring of recall of the thermostatic valve but also that of the guide or holding the moving part of the valve.
  • the raised part has an inverted T shape whose crosspiece constitutes the part around which the claws are crimped of a stirrup branch.
  • the stirrup has two opposite branches and the housing, two parts in relief. In this case it is even possible to continue the claws with a double return so as to hang behind the returns of the sleeper.
  • the stirrup has two branches opposite to the axis of the valve and the housing has two parts in relief in corresponding positions, the whole thus being symmetrical.
  • the invention relates to an outlet box of water for an internal combustion engine.
  • This case 1 shown in horizontal position, with its opening 2 facing upwards, is intended to be fixed against the opening of the cylinder head water circuit of a internal combustion, to allow the internal water circuit to the engine block to be connected in a controlled manner to the passing cooling circuit by the radiator and the circulation pump.
  • the housing 1 includes a thermostatic valve 3 controlling opening or closing depending on the liquid temperature engine internal circuit cooling, to maintain this communication closed during the engine warm-up phase, so that the temperature rise is as rapid as possible, and open the communication only from a set target temperature by the control temperature of the integrated thermostatic capsule 31 in the thermostatic valve 3.
  • This thermostatic valve of which only the end with the thermostatic capsule appears in the figure 1, is composed of two parts, a fixed part 32 and a mobile part 33 (see Figures 3A, 3B).
  • the fixed part 32 rests against the bottom 11 of the housing and the movable part 33 is held in the housing 1 by a member retainer 4 with interposition of a return spring 5.
  • the expansion of the thermostatic capsule 31 produces the displacement of the movable part 33 of the thermostatic valve against the action of the spring 5.
  • the invention relates particularly to the attachment of the thermostatic valve 3 in case 1.
  • the mounting on the cylinder head is done using screws passing through the screw holes 14.
  • the housing 1 also includes various reinforcing elements and a liquid outlet 15 opening on the side, the arrival of liquid being through the opening 2 of the housing and a housing 16 receiving a temperature sensor 7 providing the temperature signal cooling water to the central control managing operation of the motor.
  • FIG. 2 shows, in top view, the shape of the opening 81 of the cylinder head 8 of the engine against which the housing rests 1.
  • This opening 81 comprises two support zones 82, 83 receiving, in compression, the retaining member 4 of the thermostatic valve 3 as will be explained later.
  • FIGS. 3A, 3B and 4 show, more precisely, fixing the thermostatic valve 3 in the housing 1 using the retaining member 4.
  • FIG 3A shows, in an axial half-section passing by the axis XX of the thermostatic valve 3, the water outlet housing 1 installed against the cylinder head 8 of the engine around the opening 81 of the circuit internal cooling.
  • the thermostatic valve consists of two parts, one fixed 32 pressed against the bottom 11 of the housing 1 and the other 33, mobile, immersed in the coolant on the internal side of the cylinder head 8 of the engine through the opening 81 and into the volume which extends this opening in the water outlet housing 1.
  • the movable part 33 of the thermostatic valve 3 is guided on the fixed part 32 in a manner not detailed here.
  • the moving part 33 is held in preload by the return spring 5, by the stirrup-shaped retaining member 4 bearing in the mounting position against the cylinder head 8.
  • the housing 1, shown in Figures 3A, 3B, in partial section only at the thermostatic valve 3 has a bottom 11 with a housing 111 receiving the fixed part 32 of the valve thermostatic; this rod-shaped part guides the mobile part 33 of the valve.
  • the housing 1 is applied against the cylinder head 8 with interposition of the gasket 13.
  • the housing fixing screws are not shown in this figure.
  • FIG. 3A shows the closed thermostatic valve 3, the movable part 33 being applied against the surface 17 forming a seat valve in the bottom 11 of the housing.
  • the bottom 11 of the housing has a cup shape to define the surface forming valve seat 17 and separating the volume (V) from this form of cup provided with the liquid outlet not shown in this figure.
  • the volume (V) delimited between the bottom 11 in the form of a cup of the housing 1 and the movable part 33 of the valve 3 is placed in communication with the other part of the cooling circuit or internal part in the engine block.
  • the closed position of the thermostatic valve 3 corresponds to a coolant temperature in which bathes the thermostatic capsule 31, which is not yet sufficient for expand this capsule and control the movement of the moving part 33 of the thermostatic valve to come into the position shown in the Figure 3B.
  • thermostatic valve is held in place in the outlet box 2 via the shaped retaining member 4 bracket shown separately in Figure 4.
  • This member 4 consists a spring cup 41, toroidal in shape, receiving one end in support of the return spring 5.
  • This cup 41 surrounds the movable part 33 of the thermostatic valve and the guide as shown in Figures 3A, 3B.
  • the cup 41 is provided with two arms 42 in positions opposed.
  • Each arm 42 composed of an inclined part 421, rising relative to the cup 41, continues with a part 422 parallel to the cup and terminated by two claws 43 shown bent following a global section in the shape of a C.
  • claws 43 curved are open as shown in broken lines for one (43A) of them, so as to separate their inner ends 431 by a distance (L) greater than the distance (1) shown in Full line.
  • the two claws 43 of each branch 42 are intended to be crimped around a raised portion 18 located in an appropriate position of the housing as shown in Figures 1, 3A, 3B and especially 5A, 5B.
  • the two raised portions 18 protrude from the wall of the housing 1 inwardly in opposite positions with respect to the axis XX of the thermostatic valve in the case of a two-leg caliper as in this example.
  • the raised parts have a width L 0 slightly less than L.
  • FIG. 5A shows, in front view, a part in relief 18 schematically in the shape of an inverted T, with a central branch 181 and a transverse branch 182 with returns 183.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Valve Housings (AREA)
  • Check Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The case has an inlet and an outlet connected by a passage and equipped with a thermostatic valve (3). The valve has a mobile part to close the passage by supporting against the case by a retention unit (4) and a return spring. A spring mount forms a support surface for the spring. Two opposite arms are extended from the mount, where each arm is provided with claws crimped around parts in the interior of the case. The valve has a part fixed with respect to the case and another part movable to cooperate with a case surface forming a valve seat. An independent claim is also included for a method of manufacturing a water outlet case.

Description

Domaine de l'inventionField of the invention

La présente invention concerne un boítier de sortie d'eau pour un moteur à combustion interne, destiné à être fixé sur l'ouverture du circuit d'eau de la culasse du moteur, comportant une entrée et une sortie reliées par un passage, équipé d'une soupape thermostatique munie d'une capsule thermostatique et formée de deux parties dont l'une est fixe par rapport au boítier et l'autre, mobile, coopère avec une surface du boítier formant un siège de soupape, la partie mobile fermant le passage s'appuyant contre le boítier par un organe de retenue par l'intermédiaire d'un ressort de rappel, et son ouverture commandée par la dilatation de la capsule thermostatique se faisant contre l'action du ressort.The present invention relates to a water outlet housing for an internal combustion engine, intended to be fixed on the opening of the engine cylinder head water circuit, comprising an inlet and a outlet connected by a passage, equipped with a thermostatic valve provided a thermostatic capsule formed by two parts, one of which is fixed relative to the housing and the other, mobile, cooperates with a surface of the housing forming a valve seat, the movable part closing the passage leaning against the housing by a retaining member through of a return spring, and its opening controlled by the expansion of the thermostatic capsule against the action of the spring.

Etat de la techniqueState of the art

Il existe déjà de multiples formes de réalisations de boítiers de sortie d'eau de moteur à combustion interne. Ces boítiers ont, de façon générale, une structure complexe formée de nombreuses pièces de sorte que leur assemblage et leur installation sur la culasse du moteur sont, en général, longs et, de ce fait, coûteux.There are already multiple forms of housing of internal combustion engine water outlet. These boxes have, so general, a complex structure formed of many parts so that their assembly and installation on the cylinder head of the engine are, in general, long and, therefore, expensive.

Il existe, par exemple, un tel boítier de sortie d'eau selon les documents US 5 292 064, US 5 231 955, EP 0 486 757 ou encore EP 0 600 150 A.There is, for example, such a water outlet housing according to the documents US 5,292,064, US 5,231,955, EP 0 486,757 or else EP 0 600 150 A.

But de l'inventionPurpose of the invention

La présente invention a pour but de développer un boiter de sortie d'eau équipé d'une soupape thermostatique du type défini ci-dessus, qui soit d'un montage rapide, d'un encombrement réduit et qui s'installe facilement sur la culasse métallique d'un moteur.The present invention aims to develop a box of water outlet fitted with a thermostatic valve of the type defined above, which is quick to assemble, takes up little space and installs easily on the metal cylinder head of an engine.

Exposé de l'inventionStatement of the invention

A cet effet, l'invention concerne un boítier de sortie d'eau du type défini ci-dessus caractérisé en ce que :

  • le boítier comporte intérieurement au moins deux parties en relief dans des positions opposées par rapport à l'axe de la soupape thermostatique et
  • l'organe de retenue en forme d'étrier comprend
    • une coupelle à ressort formant la surface d'appui du ressort de rappel de la soupape thermostatique, et
    • au moins deux bras opposés, prolongeant la coupelle, chaque bras étant muni de griffes serties autour de chacune des parties en relief.
To this end, the invention relates to a water outlet housing of the type defined above, characterized in that:
  • the housing internally comprises at least two raised parts in opposite positions relative to the axis of the thermostatic valve and
  • the stirrup-shaped retainer includes
    • a spring cup forming the bearing surface of the return spring of the thermostatic valve, and
    • at least two opposite arms, extending the cup, each arm being provided with claws set around each of the raised parts.

L'assemblage du boítier de sortie d'eau selon l'invention est extrêmement simple puisque, après la mise en place de la soupape thermostatique dans le boítier, l'ensemble est bloqué par l'organe de retenue en forme d'étrier lui-même serti de manière simple au boítier. Le boítier peut ainsi être transporté assemblé jusqu'à son montage sur la culasse ou plus généralement la sortie d'eau commandée d'un moteur. Après cette mise en place sur le moteur, la vanne thermostatique qui se dilate en fonctionnement et qui a tendance à faire déboíter ou écarter l'étrier métallique du boítier, prend maintenant appui contre la culasse puisque l'étrier est bloqué contre la culasse sans faire intervenir les parties en saillie ; celles-ci servent uniquement à tenir l'étrier pour le conditionnement et le transport jusqu'à l'assemblage.The assembly of the water outlet housing according to the invention is extremely simple since after installing the thermostatic valve in the housing, the assembly is blocked by the retaining member in the shape of a stirrup itself crimped in a simple way to the case. The box can thus be transported assembled until it is mounted on the cylinder head or more generally the engine controlled water outlet. After this installation on the engine, the thermostatic valve which expands in functioning and which tends to dislodge or move aside the metal bracket of the case, now leans against the cylinder head since the stirrup is locked against the cylinder head without involving the projecting parts; these are only used to hold the stirrup for packaging and transport to assembly.

Les parties en saillie empêchent également tout mouvement de l'étrier dans le boítier après sa mise en place, sous l'effet des courants d'eau dans le circuit de refroidissement.Projecting parts also prevent movement of the bracket in the housing after its installation, under the effect of currents of water in the cooling circuit.

Cela permet de réaliser le boítier en matière thermoplastique et/ou thermodurcissable, plus simple et plus économique à fabriquer qu'un boítier. De plus, il sera plus léger.This allows to make the housing in thermoplastic material and / or thermosetting, simpler and more economical to manufacture than a box. In addition, it will be lighter.

Suivant une autre caractéristique avantageuse, les bras de l'étrier sont repliés par rapport au plan de la coupelle pour se prolonger par une partie parallèle à ce plan et comportant les griffes. Ainsi la coupelle à ressort assure non seulement la fonction d'appui pour le ressort de rappel de la soupape thermostatique mais également celle de guidage ou de tenue de la partie mobile de la soupape.According to another advantageous characteristic, the arms of the stirrup are folded relative to the plane of the cup to extend by a part parallel to this plane and comprising the claws. So the cup with spring not only provides the support function for the spring of recall of the thermostatic valve but also that of the guide or holding the moving part of the valve.

Suivant une autre caractéristique avantageuse pour une réalisation peu encombrante, la partie en relief a une forme de T renversé dont la traverse constitue la partie autour de laquelle sont serties les griffes d'une branche de l'étrier.According to another advantageous characteristic for an embodiment space-saving, the raised part has an inverted T shape whose crosspiece constitutes the part around which the claws are crimped of a stirrup branch.

Suivant une autre caractéristique avantageuse pour le sertissage des griffes, l'étrier comporte deux branches opposées et le boítier, deux parties en relief. Dans ce cas il est même possible de poursuivre les griffes par un double retour de manière à s'accrocher derrière les retours de la traverse.According to another advantageous characteristic for crimping claws, the stirrup has two opposite branches and the housing, two parts in relief. In this case it is even possible to continue the claws with a double return so as to hang behind the returns of the sleeper.

Enfin d'une manière avantageuse, l'étrier comporte deux branches opposées par rapport à l'axe de la soupape et le boítier comporte deux parties en relief dans des positions correspondantes, l'ensemble étant ainsi symétrique. Cette réalisation est non seulement peu encombrante puisque réduite au minimum nécessaire au maintien équilibré du ressort et de la partie mobile de la soupape thermostatique mais elle offre également une résistance hydraulique faible au liquide de refroidissement. Finally, advantageously, the stirrup has two branches opposite to the axis of the valve and the housing has two parts in relief in corresponding positions, the whole thus being symmetrical. This realization is not only space-saving since reduced to the minimum necessary to maintain a balanced spring and the moving part of the thermostatic valve but it offers also low hydraulic resistance to coolant.

L'invention concerne également un procédé de réalisation d'un tel boítier de sortie d'eau caractérisé en ce qu'

  • on réalise un boítier avec des parties en relief dans des positions opposées par rapport à l'axe XX de la soupape thermostatique,
  • on réalise un organe de retenue en forme d'étrier comprenant une coupelle à ressort formant la surface d'appui du ressort de rappel de la soupape thermostatique, ayant des bras opposés, prolongeant la coupelle, chaque bras étant muni de griffes serties autour de chacune des parties en relief, les griffes étant écartées d'une distance supérieure L à la largeur L0 de chaque partie en relief,
  • on installe, dans le boítier, une soupape thermostatique munie d'une capsule thermostatique et formée de deux parties dont l'une est fixe par rapport au boítier et l'autre, mobile, coopère avec une surface du boítier formant un siège de soupape et un ressort de rappel,
  • on met en place l'organe de retenue sur le ressort de rappel et sur les parties en relief,
  • on sertit les griffes de l'organe de retenue autour des parties en relief.
The invention also relates to a method for producing such a water outlet housing, characterized in that
  • a housing is made with raised parts in opposite positions relative to the axis XX of the thermostatic valve,
  • a stirrup-shaped retaining member is produced comprising a spring cup forming the bearing surface of the return spring of the thermostatic valve, having opposite arms, extending the cup, each arm being provided with claws set around each parts in relief, the claws being spaced apart by a distance greater than the width L 0 of each part in relief,
  • a thermostatic valve fitted with a thermostatic capsule and formed by two parts, one of which is fixed relative to the housing and the other, mobile, cooperates with a surface of the housing forming a valve seat, is installed in the housing. a return spring,
  • the retaining member is put in place on the return spring and on the raised parts,
  • the claws of the retaining member are crimped around the raised parts.

Dessinsdrawings

La présente invention sera décrite ci-après de manière plus détaillée à l'aide d'un mode de réalisation représenté schématiquement dans les dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'un boítier de sortie d'eau selon l'invention, représenté avec son côté ouvert tourné vers le haut,
  • la figure 2 est une vue de dessus de l'ouverture de la culasse sur laquelle se monte le boítier de la figure 1,
  • les figures 3A, 3B sont des demi-coupes axiales partielles du boítier au niveau de la soupape thermostatique en position fermée et en position ouverte,
  • la figure 4 est une vue en perspective de l'organe de retenue en forme d'étrier,
  • les figures 5A, 5B sont des vues partielles à échelle agrandie du sertissage de l'étrier sur le boítier et la position d'appui du boiter contre la culasse,
  • la figure 5C montre l'appui de l'étrier contre la culasse du moteur.
The present invention will be described below in more detail using an embodiment shown diagrammatically in the accompanying drawings in which:
  • FIG. 1 is a perspective view of a water outlet housing according to the invention, shown with its open side facing upwards,
  • FIG. 2 is a top view of the opening of the cylinder head on which the housing of FIG. 1 is mounted,
  • FIGS. 3A, 3B are partial axial half-sections of the housing at the level of the thermostatic valve in the closed position and in the open position,
  • FIG. 4 is a perspective view of the stirrup-shaped retaining member,
  • FIGS. 5A, 5B are partial views on an enlarged scale of the crimping of the caliper on the housing and the position in which the housing is pressed against the cylinder head,
  • FIG. 5C shows the support of the caliper against the cylinder head of the engine.

Description d'un mode de réalisationDescription of an embodiment

Selon la figure 1, l'invention concerne un boítier de sortie d'eau pour un moteur à combustion interne. Ce boítier 1, représenté en position horizontale, avec son ouverture 2 tournée vers le haut, est destiné à être fixé contre l'ouverture du circuit d'eau de la culasse d'un moteur à combustion interne, pour permettre au circuit d'eau interne au bloc moteur d'être relié de manière commandée au circuit de refroidissement passant par le radiateur et la pompe de circulation.According to Figure 1, the invention relates to an outlet box of water for an internal combustion engine. This case 1, shown in horizontal position, with its opening 2 facing upwards, is intended to be fixed against the opening of the cylinder head water circuit of a internal combustion, to allow the internal water circuit to the engine block to be connected in a controlled manner to the passing cooling circuit by the radiator and the circulation pump.

Le boítier 1 comporte une soupape thermostatique 3 commandant l'ouverture ou la fermeture en fonction de la température du liquide de refroidissement du circuit interne du moteur, pour maintenir cette communication fermée pendant la phase de réchauffage du moteur, pour que la montée en température soit aussi rapide que possible, et n'ouvrir la communication qu'à partir d'une température de consigne fixée par la température de commande de la capsule thermostatique 31, intégrée dans la soupape thermostatique 3. Cette soupape thermostatique, dont seule l'extrémité avec la capsule thermostatique apparaít à la figure 1, est composée de deux parties, une partie fixe 32 et une partie mobile 33 (voir figures 3A, 3B). La partie fixe 32 s'appuie contre le fond 11 du boítier et la partie mobile 33 est maintenue dans le boítier 1 par un organe de retenue 4 avec interposition d'un ressort de rappel 5. La dilatation de la capsule thermostatique 31 produit le déplacement de la partie mobile 33 de la soupape thermostatique contre l'action du ressort 5. L'invention concerne tout particulièrement la fixation de la soupape thermostatique 3 dans le boítier 1.The housing 1 includes a thermostatic valve 3 controlling opening or closing depending on the liquid temperature engine internal circuit cooling, to maintain this communication closed during the engine warm-up phase, so that the temperature rise is as rapid as possible, and open the communication only from a set target temperature by the control temperature of the integrated thermostatic capsule 31 in the thermostatic valve 3. This thermostatic valve, of which only the end with the thermostatic capsule appears in the figure 1, is composed of two parts, a fixed part 32 and a mobile part 33 (see Figures 3A, 3B). The fixed part 32 rests against the bottom 11 of the housing and the movable part 33 is held in the housing 1 by a member retainer 4 with interposition of a return spring 5. The expansion of the thermostatic capsule 31 produces the displacement of the movable part 33 of the thermostatic valve against the action of the spring 5. The invention relates particularly to the attachment of the thermostatic valve 3 in case 1.

Outre les éléments décrits schématiquement ci-dessus, le boítier, ici de forme sensiblement rectangulaire dont l'ouverture 2 est bordée par une rainure 12 destinée à recevoir un joint 13, s'applique comme indiqué, contre la culasse du moteur une fois le boítier assemblé.In addition to the elements described schematically above, the case, here of substantially rectangular shape whose opening 2 is bordered by a groove 12 intended to receive a seal 13, applies as indicated, against the engine cylinder head once the housing is assembled.

Le montage sur la culasse se fait à l'aide de vis passant par les trous de vis 14.The mounting on the cylinder head is done using screws passing through the screw holes 14.

Le boítier 1 comporte également différents éléments de renforcement et une sortie de liquide 15 débouchant sur le côté, l'arrivée de liquide se faisant par l'ouverture 2 du boítier ainsi qu'un logement 16 recevant un capteur de température 7 fournissant le signal de température de l'eau de refroidissement à la commande centrale gérant le fonctionnement du moteur.The housing 1 also includes various reinforcing elements and a liquid outlet 15 opening on the side, the arrival of liquid being through the opening 2 of the housing and a housing 16 receiving a temperature sensor 7 providing the temperature signal cooling water to the central control managing operation of the motor.

La figure 2 montre, en vue de dessus, la forme de l'ouverture 81 de la culasse 8 du moteur contre laquelle s'appuie le boítier 1. Cette ouverture 81 comporte deux zones d'appui 82, 83 recevant, en compression, l'organe de retenue 4 de la soupape thermostatique 3 comme cela sera expliqué ultérieurement. Figure 2 shows, in top view, the shape of the opening 81 of the cylinder head 8 of the engine against which the housing rests 1. This opening 81 comprises two support zones 82, 83 receiving, in compression, the retaining member 4 of the thermostatic valve 3 as will be explained later.

Les figures 3A, 3B et 4 montrent, de manière plus précise, la fixation de la soupape thermostatique 3 dans le boítier 1 à l'aide de l'organe de retenue 4.FIGS. 3A, 3B and 4 show, more precisely, fixing the thermostatic valve 3 in the housing 1 using the retaining member 4.

La figure 3A montre, selon une demi-coupe axiale passant par l'axe XX de la soupape thermostatique 3, le boítier de sortie d'eau 1 installé contre la culasse 8 du moteur autour de l'ouverture 81 du circuit de refroidissement interne. La soupape thermostatique est formée de deux parties, l'une fixe 32 appuyée contre le fond 11 du boítier 1 et l'autre 33, mobile, immergée dans le liquide de refroidissement du côté interne de la culasse 8 du moteur à travers l'ouverture 81 et dans le volume qui prolonge cette ouverture dans le boítier de sortie d'eau 1.Figure 3A shows, in an axial half-section passing by the axis XX of the thermostatic valve 3, the water outlet housing 1 installed against the cylinder head 8 of the engine around the opening 81 of the circuit internal cooling. The thermostatic valve consists of two parts, one fixed 32 pressed against the bottom 11 of the housing 1 and the other 33, mobile, immersed in the coolant on the internal side of the cylinder head 8 of the engine through the opening 81 and into the volume which extends this opening in the water outlet housing 1.

La partie mobile 33 de la soupape thermostatique 3 est guidée sur la partie fixe 32 d'une manière non détaillée ici. La partie mobile 33 est maintenue en précontrainte par le ressort de rappel 5, par l'organe de retenue 4 en forme d'étrier prenant appui en position de montage contre la culasse 8.The movable part 33 of the thermostatic valve 3 is guided on the fixed part 32 in a manner not detailed here. The moving part 33 is held in preload by the return spring 5, by the stirrup-shaped retaining member 4 bearing in the mounting position against the cylinder head 8.

Le boítier 1, représenté aux figures 3A, 3B, en coupe partielle uniquement au niveau de la soupape thermostatique 3 comporte un fond 11 avec un logement 111 recevant la partie fixe 32 de la soupape thermostatique ; cette partie en forme de tige guide la partie mobile 33 de la soupape. Le boítier 1 est appliqué contre la culasse 8 avec interposition du joint 13. Les vis de fixation du boítier ne sont pas représentées dans cette figure.The housing 1, shown in Figures 3A, 3B, in partial section only at the thermostatic valve 3 has a bottom 11 with a housing 111 receiving the fixed part 32 of the valve thermostatic; this rod-shaped part guides the mobile part 33 of the valve. The housing 1 is applied against the cylinder head 8 with interposition of the gasket 13. The housing fixing screws are not shown in this figure.

La figure 3A montre la soupape thermostatique 3 fermée, la partie mobile 33 étant appliquée contre la surface 17 formant siège de soupape dans le fond 11 du boítier.FIG. 3A shows the closed thermostatic valve 3, the movable part 33 being applied against the surface 17 forming a seat valve in the bottom 11 of the housing.

Au niveau de l'emplacement de la soupape thermostatique 3, le fond 11 du boítier a une forme de gobelet pour définir la surface formant siège de soupape 17 et séparer le volume (V) de cette forme de gobelet munie de la sortie de liquide non représentée dans cette figure.At the location of the thermostatic valve 3, the bottom 11 of the housing has a cup shape to define the surface forming valve seat 17 and separating the volume (V) from this form of cup provided with the liquid outlet not shown in this figure.

En position d'ouverture de la soupape thermostatique 3 (figure 3B), le volume (V) délimité entre le fond 11 en forme de gobelet du boítier 1 et la partie mobile 33 de la soupape 3 est mis en communication avec l'autre partie du circuit de refroidissement ou partie interne dans le bloc moteur.In the open position of the thermostatic valve 3 (figure 3B), the volume (V) delimited between the bottom 11 in the form of a cup of the housing 1 and the movable part 33 of the valve 3 is placed in communication with the other part of the cooling circuit or internal part in the engine block.

La position de fermeture de la soupape thermostatique 3 correspond à une température du liquide de refroidissement dans lequel baigne la capsule thermostatique 31, qui n'est pas encore suffisante pour dilater cette capsule et commander le déplacement de la partie mobile 33 de la soupape thermostatique pour venir dans la position représentée à la figure 3B.The closed position of the thermostatic valve 3 corresponds to a coolant temperature in which bathes the thermostatic capsule 31, which is not yet sufficient for expand this capsule and control the movement of the moving part 33 of the thermostatic valve to come into the position shown in the Figure 3B.

La soupape thermostatique est maintenue en place dans le boítier de sortie 2 par l'intermédiaire de l'organe 4 de retenue en forme d'étrier représenté séparément à la figure 4. Cet organe 4 se compose d'une coupelle à ressort 41, de forme torique, recevant en appui une extrémité du ressort de rappel 5. Cette coupelle 41 entoure la partie mobile 33 de la soupape thermostatique et la guide comme représenté aux figures 3A, 3B.The thermostatic valve is held in place in the outlet box 2 via the shaped retaining member 4 bracket shown separately in Figure 4. This member 4 consists a spring cup 41, toroidal in shape, receiving one end in support of the return spring 5. This cup 41 surrounds the movable part 33 of the thermostatic valve and the guide as shown in Figures 3A, 3B.

La coupelle 41 est munie de deux bras 42 dans des positions opposées. Chaque bras 42 composé d'une partie inclinée 421, remontant par rapport à la coupelle 41, se poursuit par une partie 422 parallèle à la coupelle et terminée par deux griffes 43 représentées recourbées suivant une section globale en forme de C.The cup 41 is provided with two arms 42 in positions opposed. Each arm 42 composed of an inclined part 421, rising relative to the cup 41, continues with a part 422 parallel to the cup and terminated by two claws 43 shown bent following a global section in the shape of a C.

En réalité, en sortie de fabrication et avant le montage, ces griffes 43 recourbées sont ouvertes comme représenté en trait interrompu pour l'une (43A) d'entre elle, de manière à écarter leurs extrémités intérieures 431 d'une distance (L) supérieure à la distance (1) représentée en trait plein.In reality, at the end of manufacturing and before assembly, these claws 43 curved are open as shown in broken lines for one (43A) of them, so as to separate their inner ends 431 by a distance (L) greater than the distance (1) shown in Full line.

Les deux griffes 43 de chaque branche 42 sont destinées à être serties autour d'une partie relief 18 située dans une position appropriée du boítier comme le montrent les figures 1, 3A, 3B et surtout 5A, 5B. Les deux parties en relief 18 dépassent de la paroi du boítier 1 vers l'intérieur dans des positions opposées par rapport à l'axe XX de la soupape thermostatique dans le cas d'un étrier à deux branches comme dans le présent exemple. Les parties en relief ont une largeur L0 légèrement inférieure à L.The two claws 43 of each branch 42 are intended to be crimped around a raised portion 18 located in an appropriate position of the housing as shown in Figures 1, 3A, 3B and especially 5A, 5B. The two raised portions 18 protrude from the wall of the housing 1 inwardly in opposite positions with respect to the axis XX of the thermostatic valve in the case of a two-leg caliper as in this example. The raised parts have a width L 0 slightly less than L.

L'étrier formant l'organe de retenue 4 est représenté à la figure 4 en position renversée par rapport à la position de montage telle qu'elle apparaít notamment à la figure 1, ceci pour mieux montrer la forme de cette pièce 4.The stirrup forming the retaining member 4 is shown in Figure 4 in the inverted position relative to the mounting position as that it appears in particular in Figure 1, this to better show the shape of this part 4.

La même disposition relative est adoptée aux figures 5A, 5B.The same relative provision is adopted in the figures 5A, 5B.

La figure 5A montre, en vue de face, une partie en relief 18 schématiquement en forme de T renversé, avec une branche centrale 181 et une branche transversale 182 avec des retours 183. FIG. 5A shows, in front view, a part in relief 18 schematically in the shape of an inverted T, with a central branch 181 and a transverse branch 182 with returns 183.

Le sertissage des griffes 43 de l'étrier 4 sur les deux parties en relief 18 se fait comme schématisé aux figures 5A, 5B.The crimping of the claws 43 of the stirrup 4 on the two parts in relief 18 is done as shown diagrammatically in FIGS. 5A, 5B.

Après avoir mis en place la soupape thermostatique 3 dans le boítier 1, on la coiffe par l'étrier 4 et on fait passer les deux griffes écartées 43 de chaque branche 42 de l'étrier 4 par-dessus les parties en relief 18 des parois latérales du boítier 1 (figure 5A). Puis, on referme les griffes de chaque branche par-dessus la partie en relief 18 (figure 5B) par sertissage dans un sertisseur 9 en forme de U dans lequel on enfonce l'ensemble ainsi préassemblé. Le sertisseur 9 est représenté schématiquement à la figure 5B par deux branches verticales 91 terminées par une partie évasée 92.After installing the thermostatic valve 3 in the housing 1, we cover it with the stirrup 4 and we pass the two claws apart 43 of each branch 42 of the stirrup 4 over the raised parts 18 of the side walls of the housing 1 (Figure 5A). Then, we close the claws of each branch over the raised part 18 (FIG. 5B) by crimping in a U-shaped crimper 9 in which it is inserted the assembly thus pre-assembled. The crimper 9 is shown schematically in FIG. 5B by two vertical branches 91 terminated by a flared part 92.

Une fois le sertissage terminé, il subsiste du jeu (a) entre les retours 432 des griffes et les retours 183 de chaque partie en relief 18 pour favoriser la reprise et le renvoi des efforts du ressort 5 sur la culasse 8 comme le montre la figure 5C. En position installée (le boítier est, en général, appliqué contre une paroi verticale de la culasse), l'étrier 4 est pressé contre la paroi de la culasse 8 de sorte que les griffes 43 ne s'accrochent plus aux retours 183 de chaque partie en relief. Ainsi, les efforts exercés par le ressort de rappel 5 sont transmis directement à la culasse et non pas aux parties en relief 18. Les efforts de poussée du ressort de rappel 5 contre le boítier 1 sont, par ailleurs, repris par les vis de fixation du boiter à la culasse. Dans ces conditions, les parties en relief 18 ne servent que dans la phase de stockage et de transport du boítier de sortie d'eau et non pendant le fonctionnement lorsque des efforts d'ouverture sont exercées par la soupape thermostatique 3.Once the crimping is finished, there is play (a) between the returns 432 of the claws and the returns 183 of each part in relief 18 to favor the resumption and the return of the efforts of the spring 5 on the cylinder head 8 as shown in Figure 5C. In the installed position (the housing is, in general, applied against a vertical wall of the cylinder head), the stirrup 4 is pressed against the wall of the cylinder head 8 so that the claws 43 do not cling more to the returns 183 of each raised part. So the efforts exerted by the return spring 5 are transmitted directly to the cylinder head and not to the raised parts 18. The thrust forces of the spring return 5 against the housing 1 are, moreover, taken up by the screws fixing the box to the cylinder head. Under these conditions, the raised portions 18 are only used in the storage and transport phase of the water outlet and not during operation when efforts opening are exerted by the thermostatic valve 3.

Claims (7)

Boítier de sortie d'eau pour un moteur à combustion interne, destiné à être fixé sur l'ouverture du circuit d'eau de la culasse du moteur, comportant une entrée et une sortie reliées par un passage, équipé d'une soupape thermostatique (3) munie d'une capsule thermostatique (31) et formée de deux parties dont l'une (32) est fixe par rapport au boítier (1) et l'autre (33), mobile, coopère avec une surface du boítier formant un siège de soupape (17),
la partie mobile (33) fermant le passage s'appuyant contre le boítier par un organe de retenue (4) par l'intermédiaire d'un ressort de rappel (5), et son ouverture commandée par la dilatation de la capsule thermostatique (31) se faisant contre l'action du ressort (5), caractérisé en ce que le boítier (1) comporte intérieurement au moins deux parties en relief (18) dans des positions opposées par rapport à l'axe (XX) de la soupape thermostatique (3) et l'organe de retenue (4) en forme d'étrier comprend une coupelle à ressort (41) formant la surface d'appui du ressort de rappel (5) de la soupape thermostatique (3), et au moins deux bras (42) opposés, prolongeant la coupelle (41), chaque bras (42) étant muni de griffes (43) serties autour de chacune des parties en relief (18). Water outlet box for an internal combustion engine, intended to be fixed on the opening of the water circuit of the cylinder head of the engine, comprising an inlet and an outlet connected by a passage, equipped with a thermostatic valve (3) provided with a thermostatic capsule (31) and formed of two parts, one of which (32) is fixed relative to the housing (1) and the other (33), mobile, cooperates with a surface of the housing forming a valve seat (17),
the movable part (33) closing the passage pressing against the housing by a retaining member (4) by means of a return spring (5), and its opening controlled by the expansion of the thermostatic capsule (31 ) against the action of the spring (5), characterized in that the housing (1) has internally at least two raised parts (18) in opposite positions relative to the axis (XX) of the thermostatic valve (3) and the stirrup-shaped retainer (4) comprises a spring cup (41) forming the bearing surface of the return spring (5) of the thermostatic valve (3), and at least two opposite arms (42), extending the cup (41), each arm (42) being provided with claws (43) crimped around each of the raised parts (18). Boítier de sortie d'eau selon la revendication 1,
caractérisé en ce que
la coupelle à ressort (41) est de forme torique entourant et guidant la partie mobile (33) de la soupape thermostatique (3).Water outlet housing according to claim 1,
characterized in that
the spring cup (41) is toroidal in shape surrounding and guiding the mobile part (33) of the thermostatic valve (3). Boítier de sortie d'eau selon la revendication 1,
caractérisé en ce que
les bras (42) de l'étrier (4) sont repliés (421) par rapport au plan de la coupelle (41) pour se prolonger par une partie (422) parallèle à ce plan et comportant les griffes (43).Water outlet housing according to claim 1,
characterized in that
the arms (42) of the stirrup (4) are folded (421) relative to the plane of the cup (41) to be extended by a part (422) parallel to this plane and comprising the claws (43). Boítier de sortie d'eau selon la revendication 1,
caractérisé en ce que
la partie en relief (18) a une forme de T renversé dont la traverse (182) constitue la partie autour de laquelle sont serties les griffes (43) d'une branche (42) de l'étrier (4).Water outlet housing according to claim 1,
characterized in that
the raised part (18) has an inverted T shape whose crosspiece (182) constitutes the part around which the claws (43) of a branch (42) of the stirrup (4) are crimped. Boítier de sortie d'eau selon la revendication 1,
caractérisé en ce que
l'étrier (4) comporte deux branches (42) opposées et le boítier (1), deux parties en relief (18).Water outlet housing according to claim 1,
characterized in that
the stirrup (4) has two arms (42) opposite and the housing (1), two raised parts (18). Procédé de réalisation d'un boítier de sortie d'eau selon l'une quelconque des revendications 1 à 5,
caractérisé en ce qu' on réalise un boítier (1) avec des parties en relief (18) dans des positions opposées par rapport à l'axe (XX) de la soupape thermostatique (3), on réalise un organe de retenue (4) en forme d'étrier comprenant une coupelle à ressort (41) formant la surface d'appui du ressort de rappel (5) de la soupape thermostatique (3), ayant des bras (42) opposés, prolongeant la coupelle (42), chaque bras (42) étant muni de griffes (43) serties autour de chacune des parties en relief (18), les griffes étant écartées d'une distance supérieure (L) à la largeur (L0) de chaque partie en relief (18), on installe, dans le boítier, une soupape thermostatique (3) munie d'une capsule thermostatique (31) et formée de deux parties dont l'une (32) est fixe par rapport au boítier (1) et l'autre (33), mobile, coopère avec une surface du boítier formant un siège de soupape (17) et un ressort de rappel (5), on met en place l'organe de retenue (4) sur le ressort de rappel (5) et sur les parties en relief (18), on sertit les griffes (43) de l'organe de retenue (4) autour des parties en relief (18). Process for producing a water outlet housing according to any one of Claims 1 to 5,
characterized in that a housing (1) is produced with raised parts (18) in opposite positions relative to the axis (XX) of the thermostatic valve (3), a stirrup-shaped retaining member (4) is produced comprising a spring cup (41) forming the bearing surface of the return spring (5) of the thermostatic valve (3), having opposite arms (42) , extending the cup (42), each arm (42) being provided with claws (43) crimped around each of the raised parts (18), the claws being spaced apart by a greater distance (L) than the width (L 0 ) of each raised part (18), installing in the housing a thermostatic valve (3) provided with a thermostatic capsule (31) and formed of two parts, one of which (32) is fixed relative to the housing (1) and the other (33) , mobile, cooperates with a surface of the housing forming a valve seat (17) and a return spring (5), the retaining member (4) is put in place on the return spring (5) and on the raised parts (18), the claws (43) of the retaining member (4) are crimped around the raised parts (18). Procédé selon la revendication 6,
caractérisé en ce qu'
on réalise le boítier par injection de matière plastique.Method according to claim 6,
characterized in that
we realize the housing by plastic injection.
EP04102246A 2003-05-22 2004-05-21 Water outlet assembly for an internal combustion engine and method for manufacturing Expired - Lifetime EP1479886B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0306134A FR2855214B1 (en) 2003-05-22 2003-05-22 WATER OUTPUT HOUSING FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING THE SAME
FR0306134 2003-05-22

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EP1479886A1 true EP1479886A1 (en) 2004-11-24
EP1479886B1 EP1479886B1 (en) 2008-09-10

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EP (1) EP1479886B1 (en)
AT (1) ATE408057T1 (en)
DE (1) DE602004016413D1 (en)
FR (1) FR2855214B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2929646A1 (en) * 2008-04-08 2009-10-09 Peugeot Citroen Automobiles Sa INTERNAL COMBUSTION ENGINE WATER OUTPUT HOUSING

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2890687B1 (en) * 2005-09-09 2008-02-08 Renault Sas WATER OUTPUT HOUSING FOR THE CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667354A1 (en) * 1990-09-28 1992-04-03 Jaeger Thermostatic valve for the cooling circuit of a motor vehicle internal-combustion engine
US5961039A (en) * 1997-03-04 1999-10-05 Vernet S.A. Rapidly mounted thermostat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667354A1 (en) * 1990-09-28 1992-04-03 Jaeger Thermostatic valve for the cooling circuit of a motor vehicle internal-combustion engine
US5961039A (en) * 1997-03-04 1999-10-05 Vernet S.A. Rapidly mounted thermostat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2929646A1 (en) * 2008-04-08 2009-10-09 Peugeot Citroen Automobiles Sa INTERNAL COMBUSTION ENGINE WATER OUTPUT HOUSING
EP2108796A1 (en) * 2008-04-08 2009-10-14 Peugeot Citroen Automobiles S.A. Water outlet case of an internal combustion engine

Also Published As

Publication number Publication date
EP1479886B1 (en) 2008-09-10
FR2855214B1 (en) 2005-07-15
DE602004016413D1 (en) 2008-10-23
FR2855214A1 (en) 2004-11-26
ATE408057T1 (en) 2008-09-15

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