EP0706953A1 - Druckregelnder Deckel, insbesondere zum Verschliessen einer Öffnung eines Kühlwasserkreislaufs eines Kraftfahrzeugs - Google Patents

Druckregelnder Deckel, insbesondere zum Verschliessen einer Öffnung eines Kühlwasserkreislaufs eines Kraftfahrzeugs Download PDF

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Publication number
EP0706953A1
EP0706953A1 EP95115617A EP95115617A EP0706953A1 EP 0706953 A1 EP0706953 A1 EP 0706953A1 EP 95115617 A EP95115617 A EP 95115617A EP 95115617 A EP95115617 A EP 95115617A EP 0706953 A1 EP0706953 A1 EP 0706953A1
Authority
EP
European Patent Office
Prior art keywords
plug
pressure relief
pressostatic
relief valve
cup
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
EP95115617A
Other languages
English (en)
French (fr)
Other versions
EP0706953B1 (de
Inventor
Maurice Journee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Journee SA
Original Assignee
Paul Journee SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Journee SA filed Critical Paul Journee SA
Publication of EP0706953A1 publication Critical patent/EP0706953A1/de
Application granted granted Critical
Publication of EP0706953B1 publication Critical patent/EP0706953B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent valves

Definitions

  • the present invention relates to a pressostatic plug, in particular for a cooling circuit of a combustion engine of a motor vehicle.
  • the plug is in particular designed for closing a pipe comprising at its free end a standardized base for hooking in the closed position of the plug, for example by a standardized system with ramps.
  • Such a stopper of the type comprising a pressure relief valve, a pressure relief valve body mounted movable relative to the stopper body and which carries an overpressure sealing membrane, and a spring for setting the pressure relief value which, in the closed position of the plug, urges the overpressure valve body and the overpressure sealing membrane to press against a fixed annular seat formed in the base of the pipe, and of the type in which the overpressure valve body is retained relative to the body of the plug by means of radial retaining lugs which extend opposite a radial abutment shoulder formed on the body of the plug.
  • the trigger sensitivity to a tared overpressure value of such a plug depends on many factors and details in the production of the plug.
  • the calibration spring permanently applies the retaining tabs against the radial shoulder formed on the body of the plug.
  • the object of the present invention is to propose a new design of a pressostatic plug of the type mentioned above which remedies in particular this drawback by providing great precision in the triggering value of the pressure relief valve.
  • the invention provides a pressostatic plug for closing a pipe comprising at its free end a base for hooking the plug in the closed position, of the type comprising a pressure relief valve comprising a pressure relief valve body mounted movable relative to the body of the cap and which carries an overpressure sealing membrane, and a spring for setting the value of the overpressure which, in the closed position of the cap, urges the overpressure valve body and the diaphragm overpressure tightness in abutment against a fixed annular overpressure seat formed in the base of the pipeline, and of the type in which the body of the overpressure valve is retained relative to the body of the plug by means of radial retaining tabs which extend opposite a radial abutment shoulder formed on the body of the plug, in the closed position of the plug, there is an axial clearance between the radial retaining tabs and the radial abutment shoulder, characterized in that the plug body is a molded plastic part in the shape of a bell, the lateral skirt of which comprises
  • FIG. 1 There is shown in Figures 1 and 2 a pressostatic plug 10 which is designed to seal a pipe 12 whose free end, upper considering Figure 1, is constituted by a base 14 of standardized design.
  • the base 14 has at its upper part a notched radial shoulder 16 which comprises ramps (not shown) which are designed to cooperate with a complementary internal radial shoulder 18 formed in the lower face of the upper cover 20 of the plug 10 .
  • the base 14 also includes, at its lower part, an annular seat, of semi-circular section, 22 which constitutes a fixed annular overpressure seat for the pressostatic plug 10.
  • the plug 10 essentially consists of a body of the plastic plug 24.
  • the body of the plug 24 has a general bell shape and thus comprises an annular cylindrical side skirt 26 and an upper wall 28 which ends in its center by a rivet body 30 produced integrally by molding with the body of the plug 24 which used to connect the body of the plug 24 to the cover 20.
  • the cover 20 which is a piece of cut and folded sheet metal, has a central orifice 32 which is crossed by the body of the rivet 30 with a radial clearance so as to allow the cover 20 to be mounted in rotation on the body. 24.
  • the annular skirt 26 has, on its outer wall, a series of centering fins 36.
  • the fins 36 are distributed angularly in a regular manner around the axis XX of the body of the plug 24 and of the plug 10, and they project radially outwards to form fins for the pre-centering of the body of the plug 24 when it is put in place. place in the base 14 by cooperating with the internal cylindrical wall 38 of the base 14.
  • the annular skirt 26 of the body of the plug 24 has an external radial collar 40 in which a series of notches 42 is made, distributed angularly in a regular manner and which serves to ensure retention, on the body 24 of the plug, of the pressure relief valve body 44.
  • the body of the pressure relief valve 44 is a cut and folded sheet metal part which has a general shape of a cup.
  • the cup 44 comprises an annular cylindrical skirt 46 which is open at its upper part and the upper free end edge 48 of which has a series of legs 50 which are cut and folded radially inwards to cooperate with the upper face in screws vis-à-vis the collar 40, and this under the action of an overpressure calibration spring 53 arranged inside the body of the plug 24.
  • the skirt 46 of the cup 44 is extended at its lower edge by an annular connecting part 54 in the form of a flat disc which extends in a plane perpendicular to the axis X-X.
  • the cup 44 has a blind bottom 56 in the form of a bowl comprising a slightly conical annular skirt 58 whose mean diameter is much smaller than that of the skirt 46.
  • the bottom 56 has a raised flat part 60 which thus delimits an annular housing 62 in the bottom of the bowl 56 which serves to support one end 64 of the calibration spring 53 while the opposite end 66 of the latter bears against an annular surface 68 formed vis-à-vis in the upper wall 28 of the body of the plug 24.
  • the lower face or external face of the cup 44 is coated with a sealing membrane 70 of elastomeric material which constitutes the sealing membrane of the pressure relief valve and which, in the closed position and as illustrated in FIG. 2, cooperates tightly with the seat 22.
  • the active part of the overpressure sealing membrane consists of the lower face 72 of its annular part which bears against the connecting part 54.
  • This active part is extended by a thinner layer 74 which follows the external profile of the bowl 58 and which is pierced in its center 76, like the raised part 60 of the bottom of the bowl 56 at 77, to allow passage to the central foot 78 of the pressure relief valve body 80.
  • the body of the pressure relief valve 80 consists essentially of a disc 82 which, in the closed position and as illustrated in the figures, seals the holes 76 and 77 in sealing manner by pressing its upper face 84 against the facing part 86 of the waterproofing membrane.
  • the clearance "j" is such that, when the operator puts the plug in place on the base 14, the membrane 70 comes into contact with the annular seat 22 before the latching operation of the lower part 18 of the cover 20 with the ramps of the shoulder 16 so as to eliminate any parasitic friction between the legs 50 and the shoulder 40 during the locking operation by cap rotation.
  • the production of the body of the molded plastic plug 24 makes it possible, thanks to the choice of different colors of the molded plastic material, to make a visual identification for the user of the taring value of the plug. and thus avoid any error in the mounting of the cap.
  • the elastic washer 98 makes it possible to eliminate the clearances existing between the various components and it can be coated, according to a variant not shown in the figures, with a sealing membrane on its underside which cooperates with the rounded upper edge 100 of the base 14 in order to seal the upper part of base 14 which extends to the annular overpressure seat 22.
  • the design according to the invention thus makes it possible to reduce the differences usually observed between the triggering pressure of the overpressure valve and the theoretical pressure resulting from the design of the latter which depends in particular on the dimensional tolerances on the dimensions of the base 14 and of the different components of the plug 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP19950115617 1994-10-10 1995-10-04 Druckregelnder Deckel, insbesondere zum Verschliessen einer Öffnung eines Kühlwasserkreislaufs eines Kraftfahrzeugs Expired - Lifetime EP0706953B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412140A FR2725491B1 (fr) 1994-10-10 1994-10-10 Bouchon pressostatique, notamment pour l'obturation d'une canalisation du circuit de refroidissement d'un vehicule automobile
FR9412140 1994-10-10

Publications (2)

Publication Number Publication Date
EP0706953A1 true EP0706953A1 (de) 1996-04-17
EP0706953B1 EP0706953B1 (de) 1998-03-18

Family

ID=9467765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950115617 Expired - Lifetime EP0706953B1 (de) 1994-10-10 1995-10-04 Druckregelnder Deckel, insbesondere zum Verschliessen einer Öffnung eines Kühlwasserkreislaufs eines Kraftfahrzeugs

Country Status (4)

Country Link
EP (1) EP0706953B1 (de)
DE (1) DE69501813T2 (de)
ES (1) ES2117343T3 (de)
FR (1) FR2725491B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111284A1 (de) * 1999-12-16 2001-06-27 Messer Cutting & Welding AG PIN-index-Flaschenventil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511007A (en) * 1937-12-30 1939-08-11 Gen Motors Corp Improved closure cap for the cooling systems of internal combustion engines
US3053408A (en) * 1960-09-08 1962-09-11 Stant Mfg Company Inc Radiator cap with safety gasket
FR2049159A1 (de) * 1969-06-05 1971-03-26 Gen Motors Corp
US3587912A (en) * 1968-08-23 1971-06-28 Nippon Denso Co Pressure cap unit with pressure releasing means for radiators of internal combustion engines
DE2123058B2 (de) * 1970-05-13 1977-02-03 S.A. Des Usines Chausson, Asnieres, Hauts-De-Seine (Frankreich) Kuehlerverschluss, insbesondere bei brennkraftmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511007A (en) * 1937-12-30 1939-08-11 Gen Motors Corp Improved closure cap for the cooling systems of internal combustion engines
US3053408A (en) * 1960-09-08 1962-09-11 Stant Mfg Company Inc Radiator cap with safety gasket
US3587912A (en) * 1968-08-23 1971-06-28 Nippon Denso Co Pressure cap unit with pressure releasing means for radiators of internal combustion engines
FR2049159A1 (de) * 1969-06-05 1971-03-26 Gen Motors Corp
DE2123058B2 (de) * 1970-05-13 1977-02-03 S.A. Des Usines Chausson, Asnieres, Hauts-De-Seine (Frankreich) Kuehlerverschluss, insbesondere bei brennkraftmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111284A1 (de) * 1999-12-16 2001-06-27 Messer Cutting & Welding AG PIN-index-Flaschenventil

Also Published As

Publication number Publication date
DE69501813T2 (de) 1998-07-09
DE69501813D1 (de) 1998-04-23
FR2725491A1 (fr) 1996-04-12
ES2117343T3 (es) 1998-08-01
EP0706953B1 (de) 1998-03-18
FR2725491B1 (fr) 1996-11-29

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