HYDRAULIC VALVE CONTROL UNIT FOR VEHICULAR ANTI-LOCK BRAKE AND TRACTION CONTROL SYSTEMS

• Main Authors: SIVULKA, GERALD, M, FULLER, EDWARD, N, TACKETT, WENDELL, D, LINKNER, HERBERT, L. JR, SORENSEN, RONALD, L
• Format: Patent
• Language: English; French
• Published: 20.02.1997
• Edition: 5
• Subjects: ACTUATING-FLOATS; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TAPS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VALVES; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

A valve control unit for anti-lock and traction control systems for automotive vehicles and valve structures for the valve control unit. The valve control unit has a valve body housing (30) having cylindrical cavities (144) for receiving the internal portion of the valves and a counterbore (148) forming an annular shoulder. Each valve has a radial flange (102) received in the counterbore and seated on the annular shoulder. The periphery of the counterbore is swaged to form an inwardly directed annular lip (154) securing the radial flange in the counterbore. The swaged annular lip also forms a fluid tight seal between the radial lip and the valve body housing. The annular lip is formed by a swaging tool (160) orbited in a rosette pattern. The swaging of the annular lip permits closer spacing between the valves reducing the size and weight of the valve control unit. L'invention porte sur une unité de commande à soupapes destinée à des systèmes de frein antiblocage et de gestion de traction et sur des structures à soupapes destinées à l'unité de commande à soupapes. L'unité de commande à soupapes possède un logement (30) de corps de soupapes pourvu de cavités cylindriques (144) destinées à recevoir la partie interne des soupapes et un contre-alésage(148) formant un épaulement annulaire. Chaque soupape comporte un rebord radial (102) réceptionné dans le contre-alésage et assis sur l'épaulement annulaire. Le pourtour du contre-alésage est estampé afin de former une lèvre (154) annulaire orientée vers l'intérieur assujettissant le rebord radial dans le contre-alésage. La lèvre annulaire estampée forme également un joint étanche entre la lèvre radiale et le logement de corps de soupapes. La lèvre annulaire se forme au moyen d'un outil à estamper (160) que l'on fait graviter en rosette. L'estampage de la lèvre annulaire apporte un espacement plus rapproché entre les soupapes, ce qui permet de diminuer la taille et le poids de l'unité de commande à soupapes.