Abstract: Disclosed is an electrohydraulic brake system for use in vehicles which can be braked by means of generator operation of an electric drive motor. The brake system comprises, inter alia, a brake booster and an electronic control unit which is provided for distributing the braking effect between a generative component or recuperation braking component and a friction braking component. In order to optimize the take-up of pressure medium, in particular during recuperation braking, the brake booster (6, 11, 15) is configured to be electrically actuated by the electronic control unit (10). The boosting force generated by the brake booster (6, 11, 15) is exerted as a function of variables relevant to the brake system.

Abstract: Brake hydraulic pressure is appropriately prevented from becoming lower than a reference brake pressure for holding control. When a physical amount correlating with the rotational speed of an electric motor has become higher than or equal to a predetermined value, an HSA start reference pressure setting unit sets an HSA start reference pressure to a value higher than a reference brake pressure, and if the HSA start reference pressure at a time when a driver required fluid pressure has become lower than the HSA start reference pressure is higher than the reference brake pressure, an HSA required fluid pressure setting unit sets an HSA required fluid pressure at a time when the driver required fluid pressure has become lower than the HSA start reference pressure to a value higher than the reference brake pressure.

Abstract: A disc brake for a commercial vehicle includes a brake caliper which extends over a brake disc, a brake application device which is arranged in the brake caliper for pressing brake pads against the brake disc, and at least one adjustment spindle which is rotatably mounted in a bridge via a threaded coupling. A wear adjusting device is positioned in the brake caliper by which a wear-induced change of the clearance between the brake pad and the brake disc can be substantially compensated for via an axial movement of the adjusting spindle. The disc brake is designed such that the adjusting spindle has at least one axial groove on an outer side, the length of the groove being limited in the direction of the brake application device. A stop, which is axially fixed relative to the bridge, engages into the axial groove in a relatively displaceable manner.

Abstract: A shaft sealing device comprising: a first member; a second member provided with a through-hole through which the first member passes; a sealing member configured to seal a gap between the through-hole and the first member; a rotation restricting part restricting relative rotation between the first and second members; and an axial displacement restricting part restricting the axial displacement of the sealing member. The rotation restricting part includes a first contact portion provided on the first member, a second contact portion provided on the sealing member and an inclined surface included on the first contact portion. The axial displacement restricting part includes a stopper surface. When the sealing member rotates in one direction relative to the second member by being dragged by the first member, the sealing member contacts the stopper surface to restrict the axial displacement of the sealing member.

Abstract: An operating system is formed in which an engagement shaft supported on an end portion of a brake piston is inserted through an engagement hole portion of a balance member; an operation wire is connected to the balance member via a coupling pin; and brake operating arms of rear wheel brake mechanisms are operated by a pair of arm portions of the balance member. A broad area is formed in the engagement hole portion in a manner allowing the balance member to swing about the coupling pin when the operation wire is pulled.

Abstract: A damper device includes an inner part having a cylindrical shape; an outer part including an annular space with a bottom to rotatably or relatively rotatably house the inner part from one cylinder end side; and a viscous fluid filled in the annular space. An outer side of the inner part is formed with a circular groove to fit an outside seal ring. Also, an inner side of the inner part is formed with a circular step surface positioned closer to the one cylinder end side than the circular groove, and positioning an inside seal ring. A depth of the circular groove has a dimension approximately half a thickness of the inner part at a portion forming the circular groove.

Abstract: A pressure control valve arrangement is described for controlling a fluid pressure in an ABS brake system of a vehicle such that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, including: a housing in which is formed at least one pressure-medium-conducting pressure medium duct and in which is provided a diversion of the flow of the pressure medium within the pressure medium duct from a portion of the pressure medium duct leading in one direction into a portion of the pressure medium duct leading in another direction, in which the pressure medium duct is produced together with the housing by primary forming, and in which the cross section of the pressure medium duct is oval and the major dimension of the oval cross section and the central axis of the pressure medium duct are arranged in a common plane, and the minor dimension of the oval cross section is perpendicular to the plane.

Abstract: A disk brake including a mount member having a pin insertion portion integrally connected to a connection portion so as to outwardly protrude from an outer surface of the connection portion in a radial direction of a disk rotor. A tip of a pin insertion hole of the pin insertion portion is positioned at an inner side of a vehicle relative to an outer portion. Thus, it is possible to prevent a braking torque from affecting the pin insertion portion of the mount member. As a result, it is possible to prevent a slide pin from interfering with an inner wall surface of the pin insertion hole, thereby preventing a brake judder phenomenon from occurring during a braking operation.

Abstract: A shock absorber has a housing with a piston rod assembly disposed therein. A first rod guide member is secured within a first portion of the housing so as to be concentrically disposed about at least a portion of the piston rod assembly. A second rod guide member is secured within the housing adjacent the first rod guide member so as to be concentrically disposed about at least another portion of the piston rod assembly. An electronically controlled valve assembly is disposed within the second rod guide member and is in communication with the first rod guide member.

Abstract: A magnetic powder brake device of a motor used for oil production is provided. The motor has a turning shaft and an oil extraction pump, and is coupled with a magnetic powder brake. The magnetic powder brake is connected with an electromagnetic switch and a battery. The electromagnetic switch is provided with a power sensor and connected with a power source. When the motor is turned under a normal power supply, the electromagnetic switch is in a disconnection state and the battery doesn't supply power to the magnetic powder brake, so the turning shaft is not braked by the magnetic powder brake. In case of an unexpected power failure, the electromagnetic switch is in a connection state, the battery supplies power to the magnetic powder brake, and the magnetic powder brake is activated to brake the turning shaft, preventing the turning shaft from turning reversely.

Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.

Abstract: A brake device includes a first member having holders, each of the holder configured to be in contact with a corresponding rolling body and hold the rolling body rotatably; a second member provided in contact with the rolling body and configured to rotate the rolling body in the holder according to a relative displacement with the first member; and a pressing mechanism configured to press the first member and the second member against each other. This makes it possible appropriately to set performance regardless of, for example, a projecting area of a surface of the first member, the surface being pressed by the second member.

Abstract: A cylinder portion formed in a caliper supports a pressure receiving portion and a pressing portion of a piston so as to allow the pressure receiving portion and the pressing section to advance and retreat. The piston is provided with a retraction mechanism. The retraction mechanism includes a reversing member for generating a reversing force when compressed by the pressure receiving portion and the pressing portion. The mechanism further includes a movable element moved in a retreating stroke due to the reversing force, and a first elastic member for generating a restoring force and imparting the restoring force, the first elastic member generating the restoring force when compressed by the movable element and the pressure receiving portion which is moved in an advancing stroke. The mechanism further includes a second elastic member for generating a frictional force for maintaining the compression and deformation of the first elastic member.

Abstract: Disclosed is an electro-hydraulic brake system including a master cylinder to generate hydraulic pressure according to pedal force applied to a brake pedal, a reservoir provided at an upper portion of the master cylinder to store oil, an intermediate pressure accumulator to store hydraulic pressure, a first motor and a first pump to suction oil through a channel connected to the reservoir and discharge the suctioned oil to the accumulator to create hydraulic pressure in the intermediate pressure accumulator in braking, a second motor and a second pump provided at an output side of the intermediate pressure accumulator to increase responsiveness in braking, two hydraulic circuits, each of the hydraulic circuits being connected to two wheels, and a flow control valve and a pressure reducing valve provided between the intermediate pressure accumulator and the two hydraulic circuits to control pressure transmitted from the intermediate pressure accumulator to a wheel cylinder installed at each of the wheels.

Abstract: A co-axial adjustable damping assembly includes a cylinder unit having an outer case with a cap, and an inner case having a piston unit which movably contacts inside of the outer case. A valve unit extends through the piston unit and is inserted into the inner case. A piston is connected to the valve unit and defines a first oil chamber and a second oil chamber in the inner case. A path communicates between the first and second oil chambers. A piston rod extends through the inner case, the outer case, the piston unit and the piston. A switching device is connected to the cap and has a first tube which has a cam part contacting the piston rod. A damping device has a driving rod inserted into the first tube. The driving rod is rotated to move the piston rod linearly to adjust the path.

Abstract: A mounting structure of a wheel speed sensor ring includes an intermediate ring made of aluminum which is fastened to a hub of a wheel body together with a brake disc in a state where the intermediate ring is brought into contact with the brake disc, and a pulser ring is supported on the intermediate ring in a floating state. A supported portion of the pulser ring is provided at a center position within the intermediate ring, and the intermediate ring includes a plurality of seat plate portions on an outer periphery thereof which are fastened between hub and the brake disc. The mounting structure has a compact size which permits various thermal effects caused by the generation of heat in a brake disc to be effectively suppressed.

Abstract: In an end sealing step, an end is sealed by which the core material of the end of a spring member is gathered by machining. For example, a squeezing roller is moved in an axial direction as necessary, while the end of the spring member is pressed to the inside in a radial direction by the squeezing roller. As a result, the end of the spring member is sealed and therefore, it is not necessary to use another member such as a lid member. For example, the end sealing step can be immediately carried out after an inner surface processing step. In a coil forming step after the end sealing step, formation of clearance can be prevented at the end even if the end of the spring member is gripped and the spring member is wound around the rod.

Abstract: Disclosed is an integrated electronic hydraulic brake system including an actuator having a master cylinder and a pedal simulator, an electronic stability control (ESC), and a hydraulic power unit (HPU) which are configured as a single unit. The integrated electronic hydraulic brake system may include an integrated hydraulic control unit and a power source unit, wherein the power source unit is separately provided to isolate the operational noise, and the integrated hydraulic control unit and the power source unit are connected to each other via an external pipe.

Abstract: A pedal simulator using a multi-stage series spring includes a cylinder into which an operation rod connected to a brake pedal is inserted; a piston installed in the cylinder to receive a force of the operation rod; a plurality of springs installed between the cylinder and the piston to resiliently support the piston in the cylinder and disposed to overlap each other from an inner side to an outer side; and a plurality of spring seats disposed in the cylinder to overlap each other from an inner side to an outer side and configured to support the springs while being interposed between the springs, wherein the springs are installed between the piston, the spring seats, and the cylinder such that the plurality of springs are connected to each other in a multi-stage series structure.

Abstract: The present invention relates to a hydraulic control device for an antilock brake system, which is capable of maintaining a certain amount of braking performance even in the event of a disturbance or repeated use, by enabling the restriction of the displacement of a control bolt to a certain range. Therefore, through the present invention, braking ability is not lost under any circumstances, and accidents caused by a loss of braking function due to the malfunctioning of a hydraulic control device for an antilock brake system can be averted.