EP1950423A1 - Hydraulischer Verteiler mit Proportionalsteuerung und Verfahren zur Montage eines solchen Verteilers - Google Patents

Hydraulischer Verteiler mit Proportionalsteuerung und Verfahren zur Montage eines solchen Verteilers Download PDF

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Publication number
EP1950423A1
EP1950423A1 EP08305007A EP08305007A EP1950423A1 EP 1950423 A1 EP1950423 A1 EP 1950423A1 EP 08305007 A EP08305007 A EP 08305007A EP 08305007 A EP08305007 A EP 08305007A EP 1950423 A1 EP1950423 A1 EP 1950423A1
Authority
EP
European Patent Office
Prior art keywords
bore
slide
slider
cavity
dispenser according
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.)
Withdrawn
Application number
EP08305007A
Other languages
English (en)
French (fr)
Inventor
Arnaud Le Dren
Xavier Lelasseux
Alix Goglins
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles 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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1950423A1 publication Critical patent/EP1950423A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Definitions

  • the invention relates to a hydraulic distributor with proportional control and a method of mounting such a distributor.
  • the object of the invention is in particular to prevent joints mounted on a slider of this dispenser from being damaged during the assembly of this dispenser.
  • the invention finds a particularly advantageous application in the field of master cylinders and hydraulic distributors used for the control of clutches and brakes of a motor vehicle.
  • the invention can be applied to any hydraulic distributor (proportioner / compensator / corrector), regardless of the number of inputs and outputs thereof, whether bistable or monostable, with or without spring of return, and whatever the nature of the hydraulic fluid used.
  • the figure 1.1 shows a schematic representation of a known hydraulic distributor 1 type 3/3 having a body 2 and a slider 3 provided with two seals 4.1, 4.2.
  • This slider 3 is in one part.
  • the passage of the seal 4.1 in front of the bore lights is impossible without tearing this seal in part.
  • the problematic assembly of the distributor 1 is described on the Figures 1.2-1.6 .
  • the body 2 of the dispenser is shown at figure 1.2 .
  • This body 2 comprises a blind stepped bore 5 which extends along the axis 7 of symmetry of the body 1.
  • This bore 5 opens on a face 8 of the body substantially perpendicular to the axis 7.
  • This stepped bore has a first cavity 5.1 having a first diameter D1 and a second cavity 5.2 having a second diameter D2 less than the first diameter D1.
  • These two cavities 5.1, 5.2 are interconnected and coaxial, so that the body 2 has a shoulder 10 at the point of the joint between these two cavities 5.1, 5.2.
  • the body 2 also comprises ducts 9.1-9.5 which extend radially with respect to the axis 7. These ducts 9.1-9.5 each comprise one end which opens towards the bore 5, and another end which opens outwards. 2. Piping 9.4 and 9.5 are connected to a fluid reservoir and an actuator.
  • the slider 3 comprises rings 17 and 18 of the same diameter D2 as the second cavity 5.2 of the bore 5.
  • the slider 3 also comprises a third ring 19 of the same diameter D1 as the first cavity 5.1 of the bore.
  • the three rings 17-19 are interconnected via a rod 20 of diameter less than D2.
  • the rings 17 and 19 placed at the ends of the slider 3 are respectively provided with a seal 4.1, 4.2.
  • the slider 3 is introduced inside the bore 5 by the open end of the bore 5. To this end, the end of the slider 3 carrying the slider is introduced first. 17 in the bore 5 and push the slider 3 towards the bottom of the bore 5 along the arrow 23, as shown in FIG. figure 1.4 .
  • the slider 3 then passes through the first cavity 5.1 of the bore without the seal 4.1 touching the walls of this cavity 5.1. Because the ring 17 has a diameter D2 less than that D1 of this cavity 5.1.
  • the slider 3 then enters the second cavity 5.2.
  • the seal 4.1 then comes into contact with the wall of this cavity 5.2 since the ring 17 and the second cavity has the same diameter D2.
  • the seal 4.1 then passes in front of the light of the pipe 9.5, then in front of the light of the pipe 9.2, then in front of the light of the pipe 9.4.
  • the slider 3 is then pushed until the ring 19 abuts against the shoulder 10 of the body, as shown in FIG. figure 1.5 .
  • a return spring 27 is introduced inside the bore 5.
  • a plug 29 is then introduced into the bore 5 in order to seal it, as shown figure 1.6 .
  • the invention solves this problem of seal breakage when mounting the slide in the bore of the distributor.
  • the bore of the distributor is through, and the slider of the dispenser may pass in front of the openings of the pipes is made in two separate parts, of identical or different sections.
  • each portion of the slider can be mounted at one end of the bore so that the seal does not encounter light during assembly.
  • the invention also makes it possible to produce a two-part stepped slide with two different diameters in order to overcome the unavoidable problems of coaxiality when mounting a stepped slide in a single part in a stepped bore.
  • the invention thus makes it possible to simplify the machining of the distributor and the bore since one no longer has to manage three concentricities. Such a requirement often requires pairing.
  • a return spring of the slider in a given position is used to maintain contact between the two parts of the slider. This spring can intervene when the piloting pressures are very low, in the resting phase for example, and prevents the two parts of the slide to move freely at the risk of opening and closing lights of the pipes.
  • the dispenser according to the invention further comprises chambers located on either side of the slide of greater diameter than the bore. These rooms make it possible not to pass the gasket in front of the lights opening to these rooms during assembly of the slide.
  • the two ends of the bore can be closed by a stopper which incorporates a stop for the slide in order to delimit its functional race.
  • the cap thus prevents the slide from emerging from its guide diameter and goes to the distributor chambers.
  • the two-part embodiment of the slider reduces the total guide length.
  • it can be provided on the part having only one diameter, the removal of the seal, the extension of the guide length and for example the realization of multiple grooves which serve as a sealing chamber, allowing to store very small volumes of fluid.
  • pressure application surfaces of the slider portions are inversely proportional in order to obtain the desired balance of the distributor or said otherwise, than the ratio of the surfaces. is inversely proportional to the ratio of the desired pressures on either side at equilibrium.
  • a distributor comprises a pipe having an end opening towards the outside of the body of the bore and an end opening towards the chamber.
  • the second portion of the slide has circular grooves on its contour, these grooves for storing very small volumes of fluid.
  • the ring of the first portion of the slider is provided with a seal.
  • the ends of the bore are closed by plugs.
  • one of the plugs incorporates a stop.
  • the distributor comprises a return spring positioned between one of the plugs and one of the elements of the slide.
  • the interfaces between the plugs and the slider have curved faces defining point contacts to improve their centering in the bore.
  • the interfaces between the first and second parts of the slider have curved faces defining point contacts to improve their centering in the bore.
  • the ratio of the pressure application surfaces of the slider portions are inversely proportional to the desired ratio of pressures on either side to equilibrium.
  • the figure 2.1 shows a hydraulic distributor 30 according to the invention.
  • This distributor 30 comprises a body 31 and a slide 32 respectively shown on the Figures 2.2 and 2.3 .
  • the body 31 has a stepped bore 35 which extends along the axis 34 of symmetry of the body 1 and passes through the body 31 on both sides.
  • This bore 35 opens on faces 36 and 37 of the body 31 substantially perpendicular to the axis 34 of symmetry. These faces 36 and 37 are opposite to each other.
  • the stepped bore has a first cavity 35.1 having a first diameter D1 and a second cavity 35.2 having a second diameter D2 smaller than the first diameter D1. These two cavities 35.1, 35.2 are interconnected and coaxial, so that the body 31 has a shoulder 39 at the point of the joint between these two cavities 35.1, 35.2.
  • the bore 35 comprises chambers 44 and 45 located on either side of the cavities 35.1 and 35.2. These chambers 44 and 45 have a greater diameter than the cavities 35.1 and 35.2.
  • the chamber 44 positioned at the end of the first cavity 35.1 and opening outwardly of the body 31 has a diameter D3 greater than the diameter D1.
  • the chamber 45 positioned at the end of the second cavity 35.2 and opening outwardly of the body 31 has a diameter D3 greater than the diameter D2.
  • these chambers 44 and 45 make it possible to prevent the seal 57 of the slider from passing through the lumens of the pipes opening into these chambers 44, 45 during assembly of the slider.
  • the body 31 comprises channels 39.1-39.5 which extend radially relative to the axis 34. These channels 39.1-39.5 respectively have at their end, lights 40.1-40.5 which open on the bore 35, and 41.1-41.5 lights which open outwardly of the body 31.
  • the light 40.3 opens into the chamber 44.
  • the lights 40.2, 40.4 and 40.5 open into the second cavity 35.2 of the bore 35.
  • the light 40.1 opens inside. from bedroom 45.
  • the lines 39.4 and 39.5 are respectively connected to a fluid reservoir and to an actuator, and pilot pressures are applied by the pipes 39.1-39.3.
  • any channel can play an input or output role in the hydraulic distributor according to the invention.
  • the slider 32 is formed by a first 32.1 and a second 32.2 separate elements.
  • the first element 32.1 extends along its axis 58 of symmetry. It comprises first and second rings 51 and 52 full interconnected by a rod 54.
  • the rings 51 and 52 are of the same diameter D2 as the second cavity 35.2 of the bore 35. Furthermore, the ring 51 is provided a seal 57 on its outer contour.
  • the rod 54 has a diameter smaller than that of the rings 51 and 52. This rod 54 further has a length L2 greater than that of the second cavity 35.2 of the bore, and protrudes from the rings 51 and 52.
  • the second element 32.2 has the shape of a cylinder having the same diameter D1 as the first cavity 35.1, and a length L1 less than that of the second cavity 35.2. This element 32.2 has an axis of symmetry 56.
  • multiple 61 circular grooves are formed on the contour of the element 32.2. These grooves 61, allowing to store very small volumes of fluid, serve as sealing chambers. However, alternatively, it would be possible to provide a seal on the outer contour of the element 32.2 replacing or in addition to the grooves 61.
  • the portion 32.1 of the slider is slidable in the bore 35 in order to seal or not the openings of the pipes 39.1, 39.2, 39.4, 39.5 with the rings 51 and 52. While the portion 32.2 of the slide is susceptible to slide in the bore 35 in order to close or not the opening of the pipe 39.3.
  • the figures 2.4-2.7 detail the steps of mounting the distributor 30 according to the invention.
  • the first 32.1 and the second 32.2 elements of the slider 32 are introduced inside the bore 5, respectively by the end of the bore 35 opening on the face 36 along the arrow 64 and by the end of the bore 35 opening on the face 37 along the arrow 65.
  • the element 32.2 first passes through the chamber 44 without touching the walls since the element 32.2 has a smaller diameter D1 than the one D3 of the chamber 44. The element 32.2 then enters the first cavity 35.1 of the chamber. bore 35 and the cross member until abutting against the shoulder 39.
  • the element 32.1 is introduced by the rod 54 into the bore so that the ring 52 penetrates first into the bore 35 and the ring 51 second.
  • the element 32.1 first passes through the chamber 45 without touching the edges since the rings 51 and 52 have a diameter D2 less than that D4 of the chamber 45. When crossing the chamber 45, the seal 57 therefore does not touch not the edges of the light 40.1.
  • the element 32.1 then enters the interior of the second cavity 35.2 of the bore 35 and passes through it, the rings 51 and 52 coming into contact with the walls of this cavity 35.2.
  • the element 32.1 passes through the cavity 35.2 until the end of the rod 54 comes into contact with the element 32.2, as shown in FIG. figure 2.5 .
  • the pins 34, 56 and 58 of the body 31 and the elements 32.1, 32.2 of the slide 32 are merged.
  • a first plug 69 is positioned inside the chamber 45 to plug one end of the bore 35 without blocking the oil access 39.1.
  • a second plug 71 is positioned inside the chamber 45 to plug the second end of the bore 35 without blocking the oil access 39.3.
  • This second cap 71 incorporates a stop 72 making it possible to limit the stroke of the element 32.2 as it moves towards the end of the bore 35 opening towards the face 37.
  • This plug 71 prevents the element 32.2 from coming out of the diameter guiding the cavity 35.1 and go up to the chamber 44 of larger diameter.
  • the plug 69 also incorporates a stop.
  • a return spring 73 can also be introduced between the second cap 71 and the element 32.2. This spring 73 makes it possible to maintain contact between the two elements 32.1 and 32.2 of the slide. This spring 73 occurs when the pilot pressures applied via the pipes 39.1-39.3 are very low, in the resting phase for example. This spring 73 thus prevents the two elements 32.1, 32.2 to move freely at the risk of opening and closing lights 39.1-39.5 39.3.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
EP08305007A 2007-01-29 2008-01-22 Hydraulischer Verteiler mit Proportionalsteuerung und Verfahren zur Montage eines solchen Verteilers Withdrawn EP1950423A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0752950A FR2911931B1 (fr) 2007-01-29 2007-01-29 Distributeur hydraulique a pilotage proportionnel et procede de montage d'un tel distributeur

Publications (1)

Publication Number Publication Date
EP1950423A1 true EP1950423A1 (de) 2008-07-30

Family

ID=38474339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08305007A Withdrawn EP1950423A1 (de) 2007-01-29 2008-01-22 Hydraulischer Verteiler mit Proportionalsteuerung und Verfahren zur Montage eines solchen Verteilers

Country Status (2)

Country Link
EP (1) EP1950423A1 (de)
FR (1) FR2911931B1 (de)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722234A (en) * 1952-07-17 1955-11-01 Automatic Temperature Control Co Inc Poppet valves
DE2435685A1 (de) * 1973-07-27 1975-02-06 Sanders Associates Inc Zylinder-kolben-steuerventil
GB2062814A (en) * 1979-11-05 1981-05-28 Deere & Co Hydraulic flow control valve
EP0164529A1 (de) * 1984-05-30 1985-12-18 Robert Bosch Gmbh Wegeventil
US4729408A (en) * 1985-07-12 1988-03-08 Caterpillar Inc. Control system for independent control of fluid actuated devices
JPH09166238A (ja) * 1995-12-14 1997-06-24 Denso Corp 電磁弁
EP0840018A2 (de) 1996-10-28 1998-05-06 Smc Corporation 5- wege Pilot- Transferventil
JPH10141537A (ja) * 1996-11-08 1998-05-29 M I Techno:Kk ２位置方向切換弁
DE102005029821A1 (de) * 2005-04-04 2006-10-05 Bosch Rexroth Ag Wegeventil und damit ausgeführte LS-Steueranordnung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722234A (en) * 1952-07-17 1955-11-01 Automatic Temperature Control Co Inc Poppet valves
DE2435685A1 (de) * 1973-07-27 1975-02-06 Sanders Associates Inc Zylinder-kolben-steuerventil
GB2062814A (en) * 1979-11-05 1981-05-28 Deere & Co Hydraulic flow control valve
EP0164529A1 (de) * 1984-05-30 1985-12-18 Robert Bosch Gmbh Wegeventil
US4729408A (en) * 1985-07-12 1988-03-08 Caterpillar Inc. Control system for independent control of fluid actuated devices
JPH09166238A (ja) * 1995-12-14 1997-06-24 Denso Corp 電磁弁
EP0840018A2 (de) 1996-10-28 1998-05-06 Smc Corporation 5- wege Pilot- Transferventil
JPH10141537A (ja) * 1996-11-08 1998-05-29 M I Techno:Kk ２位置方向切換弁
DE102005029821A1 (de) * 2005-04-04 2006-10-05 Bosch Rexroth Ag Wegeventil und damit ausgeführte LS-Steueranordnung

Also Published As

Publication number Publication date
FR2911931A1 (fr) 2008-08-01
FR2911931B1 (fr) 2017-04-07

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