FR2852660A1 - Valve mechanism for automobile air-conditioning system, has pretensioned spring exerting force of pretension on disc disposed in seat for closing up/liberating liquid passage through seat when pressure is exerted on disc - Google Patents

Valve mechanism for automobile air-conditioning system, has pretensioned spring exerting force of pretension on disc disposed in seat for closing up/liberating liquid passage through seat when pressure is exerted on disc Download PDF

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Publication number
FR2852660A1
FR2852660A1 FR0303581A FR0303581A FR2852660A1 FR 2852660 A1 FR2852660 A1 FR 2852660A1 FR 0303581 A FR0303581 A FR 0303581A FR 0303581 A FR0303581 A FR 0303581A FR 2852660 A1 FR2852660 A1 FR 2852660A1
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France
Prior art keywords
seat
valve
disc
exerted
valve mechanism
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Granted
Application number
FR0303581A
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French (fr)
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FR2852660B1 (en
Inventor
Herve Lonchampt
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Schrader SA
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Schrader SA
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Publication date
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Priority to FR0303581A priority Critical patent/FR2852660B1/en
Publication of FR2852660A1 publication Critical patent/FR2852660A1/en
Application granted granted Critical
Publication of FR2852660B1 publication Critical patent/FR2852660B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The mechanism has a pretensioned spring (1) exerting pretension force on a disc (5). The disc is disposed in a seat (3) for closing up or liberating a liquid passage (7) through the seat when the pressure is exerted on the disc while the seat is lower or higher to the force of pretension. A tapered section (9) of the seat is envisaged for tight fit of the seat, where the mechanism is tightly fitted in a valve stem (13). An independent claim is also included for a tight fit valve having a valve stem and a valve mechanism.

Description

MECANISME DE VALVE A EMMANCHEMENT A FORCE ET VALVE COMPORTANT UN TELVALVE MECHANISM WITH FORCE SLEEVE AND VALVE COMPRISING SUCH

MECANISMEMECHANISM

L'invention se rapporte à un mécanisme de valve comprenant un ressort 5 précontraint par rapport à un siège pour exercer une force de précontrainte sur un clapet disposé dans le siège pour obturer ou libérer un passage de fluide à travers le siège lorsqu'une pression est exercée sur le clapet en étant respectivement inférieure ou supérieure à la force de précontrainte.  The invention relates to a valve mechanism comprising a spring 5 prestressed relative to a seat for exerting a prestressing force on a valve arranged in the seat for closing or freeing a passage of fluid through the seat when pressure is exerted on the valve being respectively less than or greater than the prestressing force.

Le but de l'invention est un mécanisme de valve indémontable et d'une 10 mise en place simple.  The object of the invention is a valve mechanism which cannot be dismantled and which is simple to install.

A cet effet, l'invention a pour objet un mécanisme de valve du type rappelé précédemment, une section tronconique du siège étant prévue pour un emmanchement à force du siège.  To this end, the invention relates to a valve mechanism of the type recalled above, a frustoconical section of the seat being provided for a press fit of the seat.

L'objet de l'invention s'étend à une valve comprenant un corps de valve et 15 un mécanisme de valve comprenant un siège monté étanche par rapport au corps de valve et un ressort précontraint par rapport au siège pour exercer une force de précontrainte sur un clapet disposé dans le siège pour obturer ou libérer un passage de fluide à travers le siège lorsqu'une pression est exercée sur le clapet en étant respectivement inférieure ou supérieure à la force de précontrainte, une 20 section tronconique du siège étant prévue pour un emmanchement à force du siège dans le corps de valve.  The object of the invention extends to a valve comprising a valve body and a valve mechanism comprising a seat mounted tight relative to the valve body and a spring prestressed relative to the seat to exert a prestressing force on a valve arranged in the seat for closing or freeing a passage of fluid through the seat when pressure is exerted on the valve being respectively less or greater than the prestressing force, a frustoconical section of the seat being provided for fitting by force of the seat in the valve body.

D'autres avantages de l'invention apparaîtront à la lecture de la description d'un mode de réalisation illustré par le dessin de la figure 1, qui montre un mécanisme de valve en demi-coupe monté par emmanchement à force dans un 25 corps de valve.  Other advantages of the invention will appear on reading the description of an embodiment illustrated by the drawing in FIG. 1, which shows a half-cut valve mechanism mounted by force fitting in a body valve.

Le mécanisme de valve selon l'invention est destiné en particulier à une installation de climatisation ou d'injection.  The valve mechanism according to the invention is intended in particular for an air conditioning or injection installation.

En référenoe à la figure 1, le mécanisme de valve comprend un ressort 1 précontraint par rapport à un siège 3 pour exercer une force de précontrainte sur un 30 clapet 5 disposé dans le siège 3 pour obturer ou libérer un passage de fluide 7 à travers le siège lorsqu'une pression est exercée sur le clapet en étant respectivement inférieure ou supérieure à la force de précontrainte. Le dapet comprend une broche 17 avec une gorge dans laquelle vient se loger un joint 19 qui assure l'étanchéité du passage de fluide 7.  Referring to Figure 1, the valve mechanism includes a spring 1 prestressed relative to a seat 3 to exert a prestressing force on a valve 5 disposed in the seat 3 to close or free a passage of fluid 7 through the seat when pressure is exerted on the valve being respectively less than or greater than the prestressing force. The valve comprises a spindle 17 with a groove in which is housed a seal 19 which seals the fluid passage 7.

Selon l'invention, le siège 3 comprend une section tronconique 9 prévue pour un emmanchement à force du siège, par exemple, dans un corps de valve 13. 5 La section tronconique, appelée encore barbe, présente un angle vif qui vient, sous l'effet de la foroe d'emmanchement, s'incruster dans le corps de valve 13 pour garantir ainsi un verrouillage mécanique entre le mécanisme de valve et le corps de valve ainsi qu'une étanchéité complémentaire.  According to the invention, the seat 3 comprises a frustoconical section 9 provided for a press fit of the seat, for example, in a valve body 13. 5 The frustoconical section, also called beard, has a sharp angle which comes, under the 'effect of the fitting foroe, become embedded in the valve body 13 to thereby guarantee mechanical locking between the valve mechanism and the valve body as well as additional sealing.

Le mécanisme de valve est emmanché à l'intérieur du corps de valve 13 par 10 rintermédiaire du pont lisse 15. La position du mécanisme de valve par rapport au corps de valve 13 est assurée par un outil de montage venant en butée sur une face F du corps de valve.  The valve mechanism is fitted inside the valve body 13 by means of the smooth bridge 15. The position of the valve mechanism relative to the valve body 13 is ensured by a mounting tool abutting on a face F valve body.

Le siège 3 comprend une gorge dans laquelle vient se loger un joint assurant l'étanchéité entre le siège 3 et le corps de valve 13. De préférence, le siège 3 est pourvu 15 d'un bourrelet 11 d'étanchéité formant avec le siège une pièce d'un seul tenant et s'insérant dans une gorge 21 du corps de valve 13.  The seat 3 comprises a groove in which is housed a seal ensuring the seal between the seat 3 and the valve body 13. Preferably, the seat 3 is provided with a sealing bead 11 forming with the seat a piece in one piece and fitting into a groove 21 in the valve body 13.

La section tronconique 9 est disposée au-dessus ou au-dessous du joint ou du bourrelet 11. On crée une double d'étanchéité, au niveau du siège 3 et au niveau du clapet 5, par un joint torique ou par le bourrelet 11 et par le joint 19 assurant l'étanchéité du passage de 2 0 fluide 7.  The frustoconical section 9 is arranged above or below the seal or the bead 11. A double seal is created, at the seat 3 and at the valve 5, by an O-ring or by the bead 11 and by the gasket 19 sealing the passage of the fluid 2 0 7.

De préférenoe, le corps de valve 13 est en matière plastique et le siège 3 est métallique pourfaciliter l'emmanchement à foroe.  Preferably, the valve body 13 is made of plastic and the seat 3 is metallic to facilitate the fitting to the foroe.

Le mécanisme à valve selon l'invention permet de simplifier sa mise en place dans un corps de valve, par rapport à une mise en place par vissage. Les outillages de 2 5 moulage des corps de valve sont plus simples et la longueur de taraudage est réduite à celle d'un bouchon. Les temps de cycle de moulage de ces corps de valve se trouvent également réduits. Le mécanisme à valve est indémontable et la forme et les dimensions de la section tronconique sont définies de façon à avoir des forces d'emmanchement et des forces d'extraction cohérentes.  The valve mechanism according to the invention makes it possible to simplify its positioning in a valve body, compared with a positioning by screwing. The tools for molding the valve bodies are simpler and the tapping length is reduced to that of a plug. The molding cycle times of these valve bodies are also reduced. The valve mechanism is non-removable and the shape and dimensions of the frustoconical section are defined so as to have coherent fitting forces and extraction forces.

L'invention s'applique notamment aux mécanismes à valve pour système de climatisation automobile ou pour rampes d'injection d'essence.  The invention applies in particular to valve mechanisms for automobile air conditioning systems or for gasoline injection manifolds.

Claims (5)

REVENDICATIONS 1. Mécanisme de valve comprenant un ressort (1) précontraint par rapport à un siège (3) pour exercer une force de précontrainte sur un clapet (5) 5 disposé dans le siège (3) pour obturer ou libérer un passage de fluide (7) à travers le siège lorsqu'une pression est exercée sur le clapet en étant respectivement inférieure ou supérieure à la force de précontrainte, une section tronconique (9) du siège (3) étant prévue pour un emmanchement à force du siège.  1. Valve mechanism comprising a spring (1) prestressed relative to a seat (3) to exert a prestressing force on a valve (5) 5 disposed in the seat (3) to close or release a passage of fluid (7 ) through the seat when pressure is exerted on the valve being respectively less than or greater than the prestressing force, a frustoconical section (9) of the seat (3) being provided for a force fit of the seat. 2. Mécanisme de valve selon la revendication 1, caractérisé en ce que le siège (3) est pourvu d'un bourrelet (11) d'étanchéité formant avec le siège une pièce d'un seul tenant.  2. Valve mechanism according to claim 1, characterized in that the seat (3) is provided with a bead (11) sealing forming with the seat a single piece. 3. Valve comprenant un corps de valve (13) et un mécanisme de valve comprenant un siège (3) monté étanche par rapport au corps de valve et 15 un ressort (1) précontraint par rapport au siège (3) pour exercer une force de précontrainte sur un clapet (5) disposé dans le siège (3) pour obturer ou libérer un passage de fluide (7) à travers le siège lorsqu'une pression est exercée sur le clapet en étant respectivement inférieure ou supérieure à la force de précontrainte, une section tronconique (9) du 20 siège (3) étant prévue pour un emmanchement à force du siège dans le corps de valve (13).  3. Valve comprising a valve body (13) and a valve mechanism comprising a seat (3) mounted leaktight relative to the valve body and a spring (1) prestressed relative to the seat (3) to exert a force of prestressing on a valve (5) arranged in the seat (3) to close or free a passage of fluid (7) through the seat when pressure is exerted on the valve being respectively less or greater than the prestressing force, a frustoconical section (9) of the seat (3) being provided for press fitting the seat into the valve body (13). 4. Valve selon la revendication 3, caractérisée en ce que le corps de valve (13) est en matière plastique et le siège (3) est métallique.  4. Valve according to claim 3, characterized in that the valve body (13) is made of plastic and the seat (3) is metallic. 5. Valve selon la revendication 3, caractérisée en ce que le siège (3) est 25 monté étanche dans le corps de valve (13) par l'intermédiaire d'un bourrelet (11) formant avec le siège une pièce d'un seul tenant.  5. Valve according to claim 3, characterized in that the seat (3) is mounted leaktight in the valve body (13) by means of a bead (11) forming with the seat a single piece taking.
FR0303581A 2003-03-19 2003-03-19 VALVE MECHANISM HAVING A FORCE AND VALVE COMPRISING SUCH A MECHANISM Expired - Lifetime FR2852660B1 (en)

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FR0303581A FR2852660B1 (en) 2003-03-19 2003-03-19 VALVE MECHANISM HAVING A FORCE AND VALVE COMPRISING SUCH A MECHANISM

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FR0303581A FR2852660B1 (en) 2003-03-19 2003-03-19 VALVE MECHANISM HAVING A FORCE AND VALVE COMPRISING SUCH A MECHANISM

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FR2852660A1 true FR2852660A1 (en) 2004-09-24
FR2852660B1 FR2852660B1 (en) 2007-10-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITCR20100008A1 (en) * 2010-03-04 2011-09-05 Wonder S P A VALVE FOR PRESSURE FLUID CIRCUITS

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542155A (en) * 1968-05-14 1970-11-24 Fmc Corp Lubrication fitting
FR2685051A1 (en) * 1991-12-11 1993-06-18 Rio Elettroplastiche Sas Valve for a pneumatic cushion (pad), particularly a cushion capable of being inserted into a sports shoe
DE9408147U1 (en) * 1994-05-18 1994-07-14 Volkswagen Ag, 38440 Wolfsburg Coupling element
DE9417871U1 (en) * 1994-11-08 1995-01-05 Hasco-Normalien Hasenclever GmbH + Co, 58513 Lüdenscheid Pressure-fluid-conducting connection and connecting body with at least one male hose connector
EP1152178A2 (en) * 2000-05-05 2001-11-07 Weber-Hydraulik GmbH Insert for valve
US20020036015A1 (en) * 2000-09-25 2002-03-28 Tokai Rubber Industries, Ltd. Connection structure and valved connection member
US6460572B1 (en) * 1999-01-20 2002-10-08 Continental Teves Ag & Co., Ohg Closure device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542155A (en) * 1968-05-14 1970-11-24 Fmc Corp Lubrication fitting
FR2685051A1 (en) * 1991-12-11 1993-06-18 Rio Elettroplastiche Sas Valve for a pneumatic cushion (pad), particularly a cushion capable of being inserted into a sports shoe
DE9408147U1 (en) * 1994-05-18 1994-07-14 Volkswagen Ag, 38440 Wolfsburg Coupling element
DE9417871U1 (en) * 1994-11-08 1995-01-05 Hasco-Normalien Hasenclever GmbH + Co, 58513 Lüdenscheid Pressure-fluid-conducting connection and connecting body with at least one male hose connector
US6460572B1 (en) * 1999-01-20 2002-10-08 Continental Teves Ag & Co., Ohg Closure device
EP1152178A2 (en) * 2000-05-05 2001-11-07 Weber-Hydraulik GmbH Insert for valve
US20020036015A1 (en) * 2000-09-25 2002-03-28 Tokai Rubber Industries, Ltd. Connection structure and valved connection member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITCR20100008A1 (en) * 2010-03-04 2011-09-05 Wonder S P A VALVE FOR PRESSURE FLUID CIRCUITS

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