WO2014073434A1 - Structure de montage d'élément pour le montage sur un substrat - Google Patents

Structure de montage d'élément pour le montage sur un substrat Download PDF

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Publication number
WO2014073434A1
WO2014073434A1 PCT/JP2013/079418 JP2013079418W WO2014073434A1 WO 2014073434 A1 WO2014073434 A1 WO 2014073434A1 JP 2013079418 W JP2013079418 W JP 2013079418W WO 2014073434 A1 WO2014073434 A1 WO 2014073434A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting hole
flange
flange portion
surface pressure
valve
Prior art date
Application number
PCT/JP2013/079418
Other languages
English (en)
Japanese (ja)
Inventor
飯島　淳
太田　和宏
尚喜 山田
Original Assignee
日信工業株式会社
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 日信工業株式会社 filed Critical 日信工業株式会社
Publication of WO2014073434A1 publication Critical patent/WO2014073434A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves

Definitions

  • a flow path through which a fluid flows and a mounting hole communicating with the flow path are provided in a base made of cast metal, and a flange portion provided in an assembly part attached to the base is provided on an inner peripheral side wall of the mounting hole.
  • a base body that is sandwiched in a liquid-tight manner between an annular step portion that is formed and faces outward, and a plastic deformation portion that is formed by plastic flow of the inner peripheral side wall of the mounting hole outward from the step portion
  • the present invention relates to a component mounting structure.
  • a part of the vehicle brake hydraulic pressure control device is composed of a base body and an electromagnetic valve that is assembled to the base body so that a part thereof is inserted into a mounting hole provided in the base body.
  • a flange portion provided in an assembly part that constitutes an annular step portion formed on an inner peripheral side wall of the mounting hole and facing outward, and a plastic deformation portion formed by plastic flow of the inner peripheral side wall of the mounting hole An attachment structure which is attached to the base body so as to be sandwiched in a liquid-tight manner between them is already known from Patent Document 1.
  • a stretched material made of a high-strength aluminum alloy (Al—Si—Mg system) having relatively good stretchability is used.
  • Al—Si—Mg system a high-strength aluminum alloy
  • the cast material cannot be rapidly cooled due to its castability and solid deposition, and strength-enhancing elements such as Mg and Si may enlarge during solidification to form a cast hole, and the cast hole is plastically deformed. If it exists in the vicinity of the part, the sealing performance may be lowered.
  • the present invention has been made in view of such circumstances, and it is possible to increase the contact surface pressure between the flange portion of the assembly part and the step portion of the base body while reducing the cost by making the base body made of cast metal. It is an object of the present invention to provide a mounting part mounting structure to a base body that can ensure a sufficient sealing performance even if there is a cast hole near the plastic deformation portion of the base body.
  • the present invention provides a flow path through which a fluid flows and a mounting hole communicating with the flow path provided in a base made of cast metal, and a flange portion provided in an assembly part attached to the base.
  • a fluid is formed between an annular step portion formed on the inner peripheral side wall of the mounting hole and facing outward, and a plastic deformation portion formed by plastic flow of the inner peripheral side wall of the mounting hole outward from the step portion.
  • the first feature is that the portion is formed.
  • one surface of the flange portion facing the stepped portion is formed as a tapered surface having a diameter that increases inward in the axial direction of the mounting hole.
  • a second feature is that the local surface pressure part is formed at the outer peripheral part of the step part and the step part.
  • the stepped portion is formed in a tapered shape having a diameter that increases inward in the axial direction of the mounting hole, and the inner periphery of the flange portion and the stepped portion
  • a third feature is that the local surface pressure portion is formed by a portion.
  • the stepped portion is formed in a tapered shape having a larger diameter as it goes outward in the axial direction of the mounting hole, and the outer peripheral portion of the flange portion and the stepped portion
  • the fourth feature is that the local surface pressure portion is formed.
  • the present invention provides a fifth feature that the assembly component is a component that constitutes a part of a pump or a solenoid valve attached to the base.
  • the local surface pressure portion for annularly contacting the step portion of the base body and the flange portion of the assembly part is formed between the step portion and the flange portion, the plastic deformation portion of the base body and It is possible to seal between the flange part of the assembly part and between the step part and the flange part, and even if there is a cast hole near the plastic deformation part, the local surface with a relatively large contact surface pressure It is possible to improve the seal reliability by obtaining a sealing property at the pressure part, and to reliably prevent a seal failure.
  • the plastic deformation portion to the flange portion can be formed by causing the outer peripheral portion of the flange portion to bite into the outer peripheral portion of the stepped portion by the stress acting on the step, thereby ensuring reliable sealing performance.
  • the step portion is formed in a tapered shape having a larger diameter as it goes inward in the axial direction of the mounting hole, the inner peripheral portion of the step portion is bitten into the flange portion.
  • the local surface pressure portion can be formed to ensure a reliable sealing property and can be dealt with only by changing the cutting tool for processing the base, so that the conventional assembly parts can be used as they are. Further, by forming the local surface pressure portion at the inner peripheral portion of the stepped portion and the inner peripheral portion of the flange portion, the contact surface pressure can be increased and more reliable sealing performance can be obtained.
  • the stepped portion is formed in a taper shape having a larger diameter as it goes outward in the axial direction of the mounting hole, the outer peripheral inner edge of the flange portion is connected to the outer peripheral portion of the stepped portion.
  • the local pressure part can be formed so as to bite into the surface, ensuring a reliable sealing property, and can be handled only by changing the cutting tool for processing the base, so that conventional assembly parts can be used as they are. it can.
  • the sealing performance between the assembly part and the base body, which are parts constituting a part of the pump or the electromagnetic valve, is improved, and the electromagnetic valve or pump is assembled to the base body to ensure the sealing performance. Can do.
  • FIG. 1 is a longitudinal sectional view of a pump according to the first embodiment.
  • FIG. 2 shows the second embodiment and is an enlarged cross-sectional view of a portion corresponding to the portion indicated by arrow 2 in FIG.
  • FIG. 3 is a cross-sectional view corresponding to FIG. 2 of the third embodiment.
  • FIG. 4 is a longitudinal sectional view of an essential part of a normally open solenoid valve according to a fourth embodiment.
  • FIG. 5 shows the fifth embodiment and is an enlarged cross-sectional view of a portion corresponding to the portion indicated by the arrow 5 in FIG.
  • FIG. 6 is a cross-sectional view corresponding to FIG.
  • FIG. 7 is a longitudinal sectional view of an essential part of a normally closed solenoid valve according to a seventh embodiment.
  • FIG. 8 shows an eighth embodiment and is an enlarged cross-sectional view of a portion corresponding to the portion indicated by arrow 8 in FIG.
  • FIG. 9 is a cross-sectional view corresponding to FIG. 8 of the ninth embodiment.
  • the pump P is used as a hydraulic pressure source for a vehicle brake device, for example, and is mounted on a base 11 made of cast metal.
  • the suction passage 13 is disposed in the base 11 so as to be inserted into the hole 12A, and allows the brake fluid from a reservoir (not shown) to flow in accordance with the suction action of the pump P.
  • a discharge-side flow path 14 through which brake fluid flows according to the discharge action of the pump P is provided so as to communicate with the mounting hole 12A.
  • the mounting hole 12A is provided between the outer surface of the base 11 and a motor shaft receiving hole 15 provided in the base 11 so as to have a central axis perpendicular to the central axis of the mounting hole 12A.
  • the first to fifth holes 12a, 12b, 12c, 12d, and 12e which gradually decrease in diameter from the outer surface of the base body 11 toward the motor shaft housing hole 15 side, are coaxially connected.
  • An annular first step portion 46A facing outward is formed between the first and second holes 12a and 12b, and an annular second step portion facing outward between the second and third holes 12b and 12c.
  • annular third step portion 48 is formed between the third and fourth holes 12c and 12d, and an annular third step portion 48 is formed between the fourth and fifth holes 12d and 12e.
  • a fourth step portion 49 is formed.
  • the suction channel 13 is opened on the inner surface of the third hole 12c, and the discharge channel 14 is opened on the inner surface of the second hole 12b.
  • the motor shaft accommodation hole 15 accommodates a motor shaft 16 of an electric motor (not shown) attached to the base 11, and an eccentricity provided in the motor shaft 16 at a portion corresponding to the attachment hole 12A.
  • the inner ring 17a of the ball bearing 17 is fixed to the cam portion 16a.
  • the pump P includes a pump case 18 received in the mounting hole 12A and fixed to the base 11, and a plunger 19 slidably fitted to the base 11 and the pump case 18.
  • the outer end of the hole 12A is closed with a cap 20A which is an assembly part.
  • the pump case 18 has an inward flange portion 22a projecting radially inward at the center portion of the outer end, and an engagement flange portion 22b that comes into contact with the second step portion 47 of the mounting hole 12A from the outer side in the axial direction. It consists of a cylindrical first case 22 on the outer periphery of the intermediate portion and a cylindrical second case 23 engaged with the inner end of the first case 22, and the first case 22 is the second of the mounting hole 12A.
  • the second case 23 inserted into the third holes 12b and 12c and having an inner diameter substantially corresponding to the inner diameter of the fifth hole 12e is inserted into the third and fourth holes 12c and 12d of the mounting hole 12A.
  • a valve case 24 is interposed between the cap 20A that is attached to the base body 11 by closing the outer end of the attachment hole 12A, and the inward flange portion 22a of the first case 22.
  • the engagement flange portion 22b of the case 22 is pressed against the second step portion 47 of the attachment hole 12A, so that the pump case 18 is sandwiched between the second step portion 47 and the cap 20A. It is fixed to the base 11 within 12A.
  • the plunger 19 is slidably fitted into the fifth hole 12e of the mounting hole 12A and the second case 23 of the pump case 18, and the inner end is slidably contacted with the outer ring 17b of the ball bearing 17.
  • the small-diameter portion 19a and the large-diameter portion 19b coaxially connected to the outer end of the small-diameter portion 19a so as to be slidably fitted to the first case 22 of the pump case 18 are integrally provided.
  • An annular seal member 25 is interposed between the outer periphery of the portion 19a and the inner periphery of the fourth hole portion 12d in the mounting hole 12A.
  • a spring 26 is provided between the pump case 18 and the plunger 19 to urge the inner end of the plunger 19 toward the ball bearing 17.
  • a pump chamber 27 whose volume is changed by the reciprocating motion of the plunger 19 in the axial direction is formed between the inward flange portion 22a of the first case 22 and the plunger 19 in the pump case 18.
  • An annular chamber 28 communicating with the suction side flow path 13 is formed between the inner periphery of the third hole 12c and the outer periphery of the pump case 18 in the mounting hole 12A, and the inner periphery of the pump case 18 and the plunger
  • An annular suction chamber 30 that communicates with the annular chamber 28 through a communication hole 29 provided in the second case 23 of the pump case 18 is formed between the outer periphery of the pump case 18.
  • the valve case 24 interposed between the inward flange portion 22a of the first case 22 and the cap 20A in the pump case 18 is formed in a cylindrical shape, and is formed at both ends of the valve case 24.
  • An annular projection 24a that abuts on the inward flange 22a and an annular projection 24b that abuts on the cap 20A are integrally projected.
  • an annular discharge chamber 31 communicating with the discharge-side flow path 14 is provided between the inner periphery of the second hole 12b and the outer periphery of the valve case 24 in the mounting hole 12A. It is formed.
  • a cylindrical projection 19 c that forms a suction valve hole 32 communicating with the suction chamber 30 is integrally projected so as to enter the pump chamber 27.
  • a retainer 33 formed in a cylindrical shape with a bottom is fitted to the protrusion 19c so that the open end of the retainer 33 is brought into contact with the plunger 19.
  • the retainer 33 is formed in a coil shape so as to surround the retainer 33.
  • the spring 26 is contracted between the spring receiving protrusions 33a provided at a plurality of locations in the circumferential direction of the retainer 33 and the inner end of the inward flange portion 22a in the pump case 18.
  • a suction side valve chamber 34 communicating with the pump chamber 27 is formed in the retainer 33, and an annular suction side valve seat 35 surrounding the suction valve hole 32 faces the suction side valve chamber 34. It is formed at the tip of the part 19c.
  • a spherical suction valve 36 that can be seated on the suction side valve seat 35 is accommodated in the suction side valve chamber 34, and the suction valve 36 is contracted between the retainer 33 and the suction valve 36.
  • the valve spring 37 is biased toward the side seated on the suction side valve seat 35.
  • a discharge valve hole 38 communicating with the pump chamber 27 is formed on the inner periphery of the inward flange portion 22 a of the first case 22 in the pump case 18. Further, a discharge side valve chamber 39 communicating with the discharge chamber 31 is formed in the valve case 24 between the inward flange portion 22a and the cap 20A, and an annular discharge side valve surrounding the discharge valve hole 38 is formed.
  • a seat 40 is formed on the inner peripheral edge of the outer end of the inward flange portion 22a so as to face the discharge-side valve chamber 39.
  • a spherical discharge valve 41 that can be seated on the discharge side valve seat 40 is accommodated in the discharge side valve chamber 39, and the discharge valve 41 is contracted between the cap 20A and the inward flange portion 22a.
  • the valve spring 42 is biased toward the side seated on the discharge side valve seat 40.
  • the plunger 19 is driven to reciprocate in the axial direction in the pump case 18, and communication / blocking between the suction chamber 30 and the pump chamber 27 is performed by the suction valve 36 in accordance with the decrease / increase in pressure of the pump chamber 27.
  • the communication between the pump chamber 27 and the discharge chamber 31 is switched by the discharge valve 41 according to the increase / decrease of the pump chamber 27.
  • the cap 20A which is an assembly part that constitutes a part of the pump P attached to the base 11, is formed in a dish shape with a flange portion 21A projecting outwardly at the open end.
  • 21A is an annular first step portion 46A that is formed on the inner peripheral side wall of the mounting hole 12A and faces outward, and the inner side of the first hole portion 12a in the mounting hole 12A outside the first step portion 46A. It is attached to the base 11 by being fluid-tightly sandwiched between the plastic deformation portion 43 formed by plastic flow of the peripheral side wall, and the circumferential direction of the attachment hole 12A is between the first step portion 46A and the flange portion 21A.
  • a local surface pressure portion 44A is formed so that the first step portion 46A and the flange portion 21A are in line contact with each other.
  • one surface of the flange portion 21A facing the first step portion 46A is formed as a tapered surface 45 having a diameter that increases inward in the axial direction of the mounting hole 12A, and is orthogonal to the central axis of the mounting hole 12A.
  • the local surface pressure portion 44A is formed at the outer periphery of the first step portion 46A and the flange portion 21A formed flat along the flat surface.
  • the mounting hole 12A is provided between the flange portion 21A of the cap 20A constituting a part of the pump P and the first step portion 46A on the base body 11 side. Since a local surface pressure portion 44A that linearly contacts the first step portion 46A and the flange portion 21A along the circumferential direction is formed, between the plastic deformation portion 43 of the base 11 and the flange portion 21A of the cap 20A, Sealing is possible at two locations between the first step portion 46A on the base 11 side and the flange portion 21A, and even if a cast hole exists in the vicinity of the plastic deformation portion 43, the contact surface pressure is relatively large. It is possible to improve the reliability of the seal by obtaining the sealability at the local surface pressure portion 44A, and to reliably prevent the seal failure.
  • the pump P is assembled to the base 11 with a reliable sealability. Rukoto can.
  • one surface of the flange portion 21A that faces the first step portion 46A is formed as a tapered surface 45 that increases in diameter toward the inner side in the axial direction of the mounting hole 12A, and the flange portion 21A and the first step portion 46A. Since the local surface pressure portion 44A is formed at the outer peripheral portion, the outer peripheral portion of the flange portion 21A is bitten into the outer peripheral portion of the first step portion 46A by the stress acting on the flange portion 21A from the plastic deformation portion 43. The surface pressure portion 44A can be formed to ensure reliable sealing performance.
  • the second embodiment of the present invention will be described with reference to FIG. 2.
  • the outer end of the mounting hole 12 ⁇ / b> B provided in the base body 11 has a dish-like shape integrally having a flange portion 21 ⁇ / b> B projecting outward.
  • the cap 20B is closed, and the cap 20B has an annular first step portion 46B formed between the first hole portion 12a and the second hole portion 12b in the mounting hole 12B, and more than the first step portion 46B.
  • the flange portion 21B is attached to the base body 11 by being fluid-tightly sandwiched between a plastic deformation portion 43 formed by plastic flow of the inner peripheral side wall of the first hole portion 12a in the attachment hole 12B.
  • a local surface pressure portion 44B is formed that linearly contacts the first step portion 46B and the flange portion 21B along the circumferential direction of the mounting hole 12B. It is.
  • one surface of the flange portion 21B facing the first step portion 46B is formed flat along a plane orthogonal to the central axis of the mounting hole 12B, and the first step portion 46B is formed in the axial direction of the mounting hole 12B.
  • the local surface pressure portion 44B is formed at the inner peripheral portion of the flange portion 21B and the first step portion 46B.
  • sealing is performed at two places between the plastic deformation portion 43 of the base body 11 and the flange portion 21B of the cap 20B and between the first step portion 46B on the base body 11 side and the flange portion 21B. Even if there is a cast hole in the vicinity of the plastically deformed portion 43, the seal performance is improved by obtaining the sealability with the local surface pressure portion 44B having a relatively large contact surface pressure, resulting in a poor seal. Can be reliably prevented.
  • the first step portion 46B is formed in a taper shape having a larger diameter as it goes inward in the axial direction of the mounting hole 12B, and the local surface at the inner peripheral portion of the flange portion 21B and the first step portion 46B. Since the pressure part 44B is formed, the local surface pressure part 44B is formed by causing the inner peripheral part of the first step part 46B to bite into the flange part 21B by the stress acting on the flange part 21B from the plastic deformation part 43, A reliable sealing property can be ensured, and since it becomes possible to cope only by changing the blade for processing the base body 11, the conventional assembly parts can be used as they are.
  • the third embodiment of the present invention will be described with reference to FIG. 3.
  • the outer end of the mounting hole 12 ⁇ / b> C provided in the base 11 has a dish-like shape integrally having a flange portion 21 ⁇ / b> B projecting outward.
  • the cap 20B is closed by an annular first step portion 46C formed between the first hole portion 12a and the second hole portion 12b in the mounting hole 12C, and the first step portion 46C.
  • the flange portion 21B is attached to the base body 11 by being fluid-tightly sandwiched between the plastic deformation portion 43 formed by plastic flow of the inner peripheral side wall of the first hole portion 12a in the attachment hole 12C. Between the first step portion 46C and the flange portion 21B, there is formed a local surface pressure portion 44C that linearly contacts the first step portion 46C and the flange portion 21B along the circumferential direction of the mounting hole 12C. It is.
  • one surface of the flange portion 21B facing the first step portion 46C is formed flat along a plane perpendicular to the central axis of the mounting hole 12C, and the first step portion 46C is formed in the axial direction of the mounting hole 12C.
  • the local surface pressure portion 44C is formed at the outer peripheral portions of the flange portion 21B and the first step portion 46C.
  • sealing is performed at two places between the plastic deformation portion 43 of the base body 11 and the flange portion 21B of the cap 20B and between the first step portion 46C on the base body 11 side and the flange portion 21B. Even if there is a cast hole in the vicinity of the plastically deformed portion 43, the sealing performance is improved by obtaining the sealing performance with the local surface pressure portion 44C having a relatively large contact surface pressure, resulting in a poor seal. Can be reliably prevented.
  • the first step portion 46C is formed in a taper shape having a smaller diameter as it goes inward in the axial direction of the mounting hole 12C, and the local surface pressure portion at the outer peripheral portion of the flange portion 21B and the first step portion 46C. 44C is formed, and the local surface pressure portion 44C is made to bite the outer peripheral inner edge portion of the flange portion 21B into the outer peripheral portion of the first step portion 46C by the stress acting on the flange portion 21B from the plastic deformation portion 43. Since it can be formed and a reliable sealing property can be ensured, and it can be handled only by changing the cutting tool for processing the base 11, the conventional cap 20B can be used as it is.
  • This normally open type electromagnetic valve 51 constitutes, for example, a part of a vehicle brake hydraulic pressure control device.
  • a part of the bottomed mounting hole 52A is provided in the base 11 so as to be inserted into the base 11 and an upstream flow path 53 for introducing brake fluid from a hydraulic pressure supply source (not shown).
  • a downstream channel 54 for leading brake fluid from the normally open solenoid valve 51 side to the wheel cylinder (not shown) is provided so as to communicate with the mounting hole 52A.
  • the mounting hole 52A is formed so as to gradually decrease in diameter toward the inner side in the axial direction while opening the outer end on the outer surface of the base body 11, and is formed on the inner peripheral side wall of the mounting hole 52A.
  • An annular first step portion 55A facing outward in the axial direction and an annular second step portion 56 disposed inward in the axial direction than the first step portion 55A and facing outward in the axial direction are formed.
  • the electromagnetic valve 51 includes a stepped cylindrical valve housing 57A, which is an assembly part.
  • the valve housing 57A has an inner end facing the second step 56 of the mounting hole 52A. It is inserted into the mounting hole 52A.
  • a flange portion 58A projecting radially outward is integrally provided on the outer periphery of the intermediate portion of the valve housing 57A, and the flange portion 58A includes the first step portion 55A of the mounting hole 52A and the mounting hole 52A.
  • the valve housing 57 ⁇ / b> A is fixed to the base body 11 by being sandwiched between the inner peripheral side wall and a plastic deformation portion 59 formed by plastic flow of a portion outside the first step portion 55 ⁇ / b> A.
  • An annular downstream chamber 61 communicating with the downstream flow path 54 is formed between the inner periphery of the mounting hole 52A and the outer periphery of the valve housing 57A between the first and second step portions 55A and 56. Further, an upstream chamber 62 communicating with the upstream flow path 53 is formed in the mounting hole 52A between the inner end portion of the valve housing 57A and the inner end blocking portion of the mounting hole 52A.
  • a substantially cylindrical valve seat member 65 having a valve hole 63 communicating with the upstream chamber 62 and a valve seat 64 having the valve hole 63 opened in the center is press-fitted into the intermediate portion near the inner end in the valve housing 57A. Is done.
  • a rod-shaped valve shaft 66 is slidably accommodated in the valve housing 57A, and a valve body 67 that can be seated on the valve seat 64 is fitted to an end of the valve shaft 66 on the valve seat member 65 side.
  • a valve chamber 68 for accommodating the valve body 67 is formed between the valve seat member 65 and the valve housing 57A, and the valve body 67 is separated from the valve seat 64 in the valve chamber 68.
  • a valve spring 69 biased in the direction is accommodated so as to be contracted between the valve body 67 and the valve seat member 65.
  • the valve housing 57A is provided with a plurality of communication holes 70 through which the valve chamber 68 communicates with the downstream chamber 61, and a filter accommodated in the downstream chamber 61 so as to cover the communication holes 70 from the outside. 71 is attached to the valve housing 57A. A filter 72 interposed between the valve hole 63 and the upstream chamber 62 is attached to the inner end of the valve housing 57A. Further, the valve seat member 65 is provided with a bypass path 73 that bypasses the valve hole 63 and connects the valve chamber 68 and the upstream chamber 62, and the bypass path 73 has the upstream from the valve chamber 68. A one-way valve 74 that allows the brake fluid to flow toward the chamber 62 is interposed.
  • a retainer 75 having a bottomed cylindrical portion 75a having a throttle hole 76 communicating with the valve hole 63 from the upstream chamber 62 side is attached to a surface of the valve seat member 65 facing the filter 72 side.
  • the retainer 75 prevents the one-way valve 74 from being detached from the valve seat member 65.
  • a cylindrical fixed core 77 protruding from the outer surface of the base body 11 is integrally and coaxially connected to the valve housing 57A.
  • the fixed core 77 has a hemispherical closed end.
  • the guide tube 78 and the fixed core 77 are fitted in the opening end of the guide tube 78 formed in a bottom cylindrical shape, and are welded in a liquid-tight manner.
  • the guide cylinder 78 is covered with a solenoid (not shown).
  • a movable core 79 facing the fixed core 77 is slidably fitted in the guide cylinder 78, and the valve shaft 66 biased by the valve spring 69 abuts on the movable core 79. .
  • the movable core 79 moves forward toward the fixed core 77 against the spring force of the valve spring 69 by the electromagnetic force exerted by the solenoid when it is excited, and the valve body 67 is moved toward the fixed core 77.
  • the valve hole 63 is closed by sitting on the valve seat 64.
  • the flange portion 58A provided integrally with the valve housing 57A includes an annular first step portion 55A formed on the inner peripheral side wall of the mounting hole 52A and facing outward, and outside the first step portion 55A.
  • the inner peripheral side wall of the mounting hole 52A is fluid-tightly sandwiched between the plastic deformation portion 59 formed by plastic flow, but the mounting hole is interposed between the first step portion 55A and the flange portion 58A.
  • a local surface pressure portion 80A is formed to contact the first step portion 55A and the flange portion 58A in a ring shape along the circumferential direction of 52A.
  • one surface of the flange portion 58A facing the first step portion 55A is formed as a tapered surface 81 having a diameter that increases inward in the axial direction of the mounting hole 52A, and is orthogonal to the central axis of the mounting hole 52A.
  • the local surface pressure portion 80A is formed at the outer periphery of the first step portion 55A and the flange portion 58A that are formed flat along a flat surface.
  • sealing is performed at two places, between the plastic deformation portion 59 of the base body 11 and the flange portion 58A of the valve housing 57A, and between the first step portion 55A on the base body 11 side and the flange portion 58A. Even if there is a cast hole in the vicinity of the plastic deformation portion 59, the sealing performance is improved by obtaining the local surface pressure portion 80A having a relatively large contact surface pressure, Sealing failure can be reliably prevented, and the normally open electromagnetic valve 51 can be assembled to the base body 11 with reliable sealing performance.
  • one surface of the flange portion 58A that faces the first step portion 55A is formed as a tapered surface 81 that increases in diameter toward the inner side in the axial direction of the mounting hole 52A, and the flange portion 58A and the first step portion 55A. Since the local surface pressure portion 80A is formed at the outer peripheral portion, the outer peripheral portion of the flange portion 58A is bitten into the outer peripheral portion of the first step portion 55A by the stress acting on the flange portion 58A from the plastic deformation portion 59. The surface pressure portion 80A can be formed to ensure reliable sealing performance.
  • the fifth embodiment of the present invention will be described with reference to FIG. 5.
  • the flange portion 58B provided integrally with the valve housing 57B is an annular shape formed on the inner peripheral side wall of the mounting hole 52B provided in the base body 11.
  • the flange portion 58B is fluid-tightly sandwiched between the first step portion 55B and a plastic deformation portion 59 formed by plastic flow of the inner peripheral side wall of the mounting hole 52B outside the first step portion 55B.
  • the local surface pressure between the first step portion 55B and the flange portion 58B causes the first step portion 55B and the flange portion 58B to annularly contact with each other along the circumferential direction of the attachment hole 52B.
  • Part 80B is formed.
  • one surface of the flange portion 58B facing the first step portion 55B is formed flat along a plane perpendicular to the central axis of the mounting hole 52B, and the first step portion 55B is formed in the axial direction of the mounting hole 52B.
  • the local surface pressure part 80B is formed at the inner peripheral part of the flange part 58B and the first step part 55B.
  • sealing is performed at two places, between the plastic deformation portion 59 of the base body 11 and the flange portion 58B of the valve housing 57B and between the first step portion 55B on the base body 11 side and the flange portion 58B. Even if there is a cast hole in the vicinity of the plastic deformation portion 59, the seal performance is improved by obtaining the seal performance with the local surface pressure portion 80B having a relatively large contact surface pressure. Defects can be reliably prevented.
  • the first step portion 55B is formed in a tapered shape having a diameter that increases inward in the axial direction of the mounting hole 52B, and the local surface is formed at the inner peripheral portions of the flange portion 58B and the first step portion 55B. Since the pressure part 80B is formed, the local surface pressure part 80B is formed by causing the inner peripheral part of the first step part 55B to bite into the flange part 58B by the stress acting on the flange part 58B from the plastic deformation part 59, A reliable sealing property can be ensured, and since it becomes possible to cope only by changing the blade for processing the base body 11, the conventional assembly parts can be used as they are.
  • a sixth embodiment of the present invention will be described with reference to FIG. 6.
  • a flange portion 58 ⁇ / b> B provided integrally with the valve housing 57 ⁇ / b> B has an annular shape formed on the inner peripheral side wall of a mounting hole 52 ⁇ / b> C provided in the base 11.
  • the flange portion 58B is fluid-tightly sandwiched between the first step portion 55C and the plastic deformation portion 59 formed by plastic flow of the inner peripheral side wall of the mounting hole 52C outside the first step portion 55C.
  • the local surface pressure between the first step portion 55C and the flange portion 58B causes the first step portion 55C and the flange portion 58B to make an annular line contact along the circumferential direction of the attachment hole 52C.
  • a portion 80C is formed.
  • one surface of the flange portion 58B facing the first step portion 55C is formed flat along a plane orthogonal to the central axis of the mounting hole 52C, and the first step portion 55C is formed in the axial direction of the mounting hole 52C. It is formed in a tapered shape having a smaller diameter toward the direction, and the local surface pressure portion 80C is formed at the outer peripheral portions of the flange portion 58B and the first step portion 55C.
  • sealing is performed at two places, between the plastic deformation portion 59 of the base body 11 and the flange portion 58B of the valve housing 57B, and between the first step portion 55C on the base body 11 side and the flange portion 58B. Even if there is a cast hole in the vicinity of the plastic deformation portion 59, the seal performance is improved by obtaining the seal performance with the local surface pressure portion 80C having a relatively large contact surface pressure. Defects can be reliably prevented.
  • the first step portion 55C is formed in a tapered shape having a smaller diameter as it goes inward in the axial direction of the mounting hole 52C, and the local surface pressure portion is formed at the outer peripheral portions of the flange portion 58B and the first step portion 55C. Since 80C is formed, the local surface pressure portion 80C is made to bite the outer peripheral inner edge portion of the flange portion 58B into the outer peripheral portion of the first step portion 55C by the stress acting on the flange portion 58B from the plastic deformation portion 59. In this way, a reliable sealing property can be ensured, and it is possible to cope only by changing the cutting tool for processing the base 11, so that the conventional valve housing 57B can be used as it is.
  • This normally closed electromagnetic valve 83 constitutes a part of a vehicle brake hydraulic pressure control device, for example.
  • a part of the mounting hole 84A is provided in the bottomed mounting hole 84A.
  • the base body 11 is provided with an upstream flow path 85 for guiding brake fluid from a wheel cylinder (not shown), and a normal passage.
  • a downstream channel 86 for leading brake fluid from the closed electromagnetic valve 83 side to a reservoir side (not shown) is provided so as to communicate with the mounting hole 84A.
  • the mounting hole 84A is formed so as to gradually decrease in diameter as it goes inward in the axial direction while opening the outer end on the outer surface of the base 11, and is formed on the inner peripheral side wall of the mounting hole 84A.
  • a third step portion 89 is formed which is disposed inward in the axial direction from 88 and faces outward.
  • the electromagnetic valve 83 includes a stepped cylindrical valve housing 90A, which is an assembly part.
  • the valve housing 90A has an inner end facing the third step 89 of the mounting hole 84A. It is inserted into the mounting hole 84A.
  • a flange portion 91A that projects radially outward is integrally provided on the outer periphery of the intermediate portion of the valve housing 90A.
  • the flange portion 91A includes the first step portion 87A of the mounting hole 84A and the mounting hole 84A.
  • the valve housing 90 ⁇ / b> A is fixed to the base body 11 by being sandwiched between the inner peripheral side wall and a plastic deformation portion 92 formed by plastic flow of a portion outside the first step portion 87 ⁇ / b> A.
  • annular upstream chamber 93 communicating with the upstream flow path 85 is formed between the inner periphery of the mounting hole 84A and the outer periphery of the valve housing 90A.
  • a downstream chamber 94 communicating with the downstream channel 86 is formed in the mounting hole 84A between the inner end portion of the valve housing 90A and the inner end blocking portion of the mounting hole 84A.
  • a cylindrical guide tube 95 protruding from the base body 11 is welded to the outer end portion of the valve housing 90A, and a fixed core 96 is fixed to the outer end portion of the guide tube 95.
  • a movable core 97 having an outer end facing the fixed core 96 is slidably accommodated in the guide cylinder 95.
  • a substantially cylindrical valve seat member 100 having a valve hole 98 communicating with the downstream chamber 94 and a valve seat 99 having the valve hole 98 opened at the center is press-fitted into the inner end of the valve housing 90A.
  • a valve chamber 101 is formed in the valve housing 90 ⁇ / b> A and the guide cylinder 95 so that the valve seat 99 faces, and a spherical valve body 102 accommodated in the valve chamber 101 is the valve of the movable core 97. It is fixed to the end on the seat member 100 side.
  • a valve spring 103 for biasing the movable core 97 is provided between the movable core 97 and the fixed core 96 on the side where the valve body 102 is seated on the valve seat 99.
  • the valve housing 90A is provided with a plurality of communication holes 104 that allow the valve chamber 101 to communicate with the upstream chamber 93, and a filter that is accommodated in the upstream chamber 93 so as to cover the communication holes 104 from the outside.
  • 105 is accommodated in the upstream chamber 93 so as to be sandwiched between the flange portion 91 ⁇ / b> A and the second step portion 88.
  • the guide cylinder 95 is covered with a solenoid (not shown), and the movable core 97 is directed toward the fixed core 96 against the spring force of the valve spring 103 by an electromagnetic force exerted by the solenoid when excited.
  • the valve body 102 moves away from the valve seat 99 and the valve hole 98 is opened.
  • the flange portion 91A provided integrally with the valve housing 90A includes an annular first step portion 87A formed on the inner peripheral side wall of the mounting hole 84A and facing outward, and more outward than the first step portion 87A.
  • the mounting hole 84A is sandwiched between the first step portion 87A and the flange portion 91A between the first step portion 87A and the flange portion 91A.
  • a local surface pressure portion 106A is formed that linearly contacts the first step portion 87A and the flange portion 91A along the circumferential direction of 84A.
  • one surface of the flange portion 91A that faces the first step portion 87A is formed in a tapered surface 107 that increases in diameter toward the inner side in the axial direction of the mounting hole 84A, and is orthogonal to the central axis of the mounting hole 84A.
  • the local surface pressure portion 106A is formed at the outer periphery of the first step portion 87A and the flange portion 91A that are formed flat along the flat surface.
  • sealing is performed at two places, between the plastic deformation portion 92 of the base body 11 and the flange portion 91A of the valve housing 90A, and between the first step portion 87A on the base body 11 side and the flange portion 91A. Even if there is a cast hole in the vicinity of the plastic deformation portion 92, the seal performance is improved by obtaining a seal property with the local contact pressure portion 106 A having a relatively large contact surface pressure, Sealing failure can be reliably prevented, and the normally closed electromagnetic valve 83 can be assembled to the base body 11 with reliable sealing performance.
  • one surface of the flange portion 91A facing the first step portion 87A is formed as a tapered surface 107 having a diameter that increases inward in the axial direction of the mounting hole 52A, and the flange portion 91A and the first step portion 87A Since the local surface pressure portion 106A is formed at the outer peripheral portion, the outer peripheral portion of the flange portion 91A is bitten into the outer peripheral portion of the first step portion 87A by the stress acting on the flange portion 91A from the plastic deformation portion 92.
  • the surface pressure portion 106A can be formed to ensure reliable sealing performance.
  • the eighth embodiment of the present invention will be described with reference to FIG. 8.
  • the flange portion 91B provided integrally with the valve housing 90B is an annular shape formed on the inner peripheral side wall of the mounting hole 84B provided in the base body 11.
  • the flange portion 91B is fluid-tightly sandwiched between the first step portion 87B and the plastic deformation portion 92 formed by plastic flow of the inner peripheral side wall of the mounting hole 84B outside the first step portion 87B.
  • the local surface pressure between the first step portion 87B and the flange portion 91B is such that the first step portion 87B and the flange portion 91B are in annular contact with each other along the circumferential direction of the attachment hole 84B.
  • Part 106B is formed.
  • one surface of the flange portion 91B facing the first step portion 87B is formed flat along a plane orthogonal to the central axis of the mounting hole 84B, and the first step portion 87B is formed in the axial direction of the mounting hole 84B.
  • the local surface pressure portion 106B is formed at the inner peripheral portion of the flange portion 91B and the first step portion 87B.
  • sealing is performed at two places, between the plastic deformation portion 92 of the base 11 and the flange portion 91B of the valve housing 90B, and between the first step portion 87B on the base 11 side and the flange portion 91B. Even if there is a cast hole in the vicinity of the plastic deformation portion 92, the seal performance is improved by obtaining the seal performance with the local surface pressure portion 106B having a relatively large contact surface pressure. Defects can be reliably prevented.
  • the first step portion 87B is formed in a taper shape having a diameter that increases inward in the axial direction of the mounting hole 84B, and the local surface is formed at the inner peripheral portions of the flange portion 91B and the first step portion 87B. Since the pressure part 106B is formed, the local surface pressure part 106B is formed by causing the inner peripheral part of the first step part 87B to bite into the flange part 91B by the stress acting on the flange part 91B from the plastic deformation part 92, A reliable sealing property can be ensured, and the conventional valve housing 90B can be used as it is because it can be dealt with only by changing the blade for processing the base 11.
  • a ninth embodiment of the present invention will be described with reference to FIG. 9.
  • a flange portion 91 ⁇ / b> B provided integrally with the valve housing 90 ⁇ / b> B has an annular shape formed on an inner peripheral side wall of a mounting hole 84 ⁇ / b> C provided in the base body 11.
  • the flange portion 91B is fluid-tightly sandwiched between the first step portion 87C and a plastic deformation portion 92 formed by plastic flow of the inner peripheral side wall of the mounting hole 84C outside the first step portion 87C.
  • the local surface pressure between the first step portion 87C and the flange portion 91B is such that the first step portion 87C and the flange portion 91B are in annular contact with each other along the circumferential direction of the attachment hole 84C. Part 106C is formed.
  • one surface of the flange portion 91B facing the first step portion 87C is formed flat along a plane orthogonal to the central axis of the mounting hole 84C, and the first step portion 87C is formed in the axial direction of the mounting hole 84C.
  • the local surface pressure portion 106C is formed at the outer peripheral portion of the flange portion 91B and the first step portion 87C.
  • sealing is performed at two places, between the plastic deformation portion 92 of the base 11 and the flange portion 91B of the valve housing 90B, and between the first step portion 87C on the base 11 side and the flange portion 91B. Even if there is a cast hole in the vicinity of the plastic deformation portion 92, the seal performance is improved by obtaining a seal performance with the local surface pressure portion 106C having a relatively large contact surface pressure. Defects can be reliably prevented.
  • the first step portion 87C is formed in a taper shape having a smaller diameter as it goes inward in the axial direction of the mounting hole 84C, and the local surface pressure portion is formed at the outer peripheral portions of the flange portion 91B and the first step portion 87C.
  • 106C is formed, and the local surface pressure portion 106C is made to bite the outer peripheral edge of the flange portion 91B into the outer peripheral portion of the first step portion 87C by the stress acting on the flange portion 91B from the plastic deformation portion 92. Since it can be formed and a reliable sealing property can be ensured, and it can be handled only by changing the blade for processing the base 11, conventional assembly parts can be used as they are.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention porte sur, dans une structure de montage d'élément destinée au montage sur un substrat, un trajet d'écoulement qui permet à un fluide de s'écouler à travers celui-ci et un trou de montage qui communique avec le trajet d'écoulement sont formés sur un substrat en métal coulé, et une section de collerette qui est placée sur un élément de montage qui est monté sur le substrat est configurée de façon à être prise en sandwich de façon étanche aux fluides entre une section épaulée annulaire, qui est formée sur la paroi latérale périphérique intérieure du trou de montage et qui fait face vers l'extérieur, et une section de déformation plastique qui est formée en provoquant un écoulement plastique de la paroi latérale périphérique intérieur du trou de montage à un emplacement qui est plus sur le côté extérieur que la section épaulée. Une section de pression de surface locale (44A) est formée entre la section épaulée (46A) et la section de collerette (21A) et amène la section épaulée (46A) et la section de collerette (21A) en contact linéaire de façon annulaire le long de la direction périphérique du trou de montage (12A). Par conséquent, il est possible d'augmenter la pression de surface de contact entre la section de collerette de l'élément de montage et la section épaulée du substrat, et de conserver des caractéristiques d'étanchéité suffisantes, même lorsqu'il existe une soufflure au voisinage de la section de déformation plastique du substrat.
PCT/JP2013/079418 2012-11-06 2013-10-30 Structure de montage d'élément pour le montage sur un substrat WO2014073434A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012244112A JP2014091460A (ja) 2012-11-06 2012-11-06 基体への組み付け部品取付け構造
JP2012-244112 2012-11-06

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WO2014073434A1 true WO2014073434A1 (fr) 2014-05-15

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10507812A (ja) * 1994-10-27 1998-07-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 自動車におけるスリップ制御されるブレーキ装置のための圧力制限式の電磁弁
JPH10507982A (ja) * 1993-07-23 1998-08-04 アイティーティー・オートモーティブ・ヨーロップ・ゲーエムベーハー ブレーキスリップ制御およびトラクションスリップ制御付き液圧ブレーキシステム
JPH11218074A (ja) * 1997-11-20 1999-08-10 Robert Bosch Gmbh ピストンポンプ
JPH11257245A (ja) * 1998-01-09 1999-09-21 Robert Bosch Gmbh ピストンポンプ
JP2000120528A (ja) * 1998-10-15 2000-04-25 Robert Bosch Gmbh ピストンポンプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10507982A (ja) * 1993-07-23 1998-08-04 アイティーティー・オートモーティブ・ヨーロップ・ゲーエムベーハー ブレーキスリップ制御およびトラクションスリップ制御付き液圧ブレーキシステム
JPH10507812A (ja) * 1994-10-27 1998-07-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 自動車におけるスリップ制御されるブレーキ装置のための圧力制限式の電磁弁
JPH11218074A (ja) * 1997-11-20 1999-08-10 Robert Bosch Gmbh ピストンポンプ
JPH11257245A (ja) * 1998-01-09 1999-09-21 Robert Bosch Gmbh ピストンポンプ
JP2000120528A (ja) * 1998-10-15 2000-04-25 Robert Bosch Gmbh ピストンポンプ

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