System Pump Structure Detail Patents (Class 303/116.4)
  • Patent number: 11970083
    Abstract: A method for controlling the braking operation of a motor vehicle including at least one electric drive machine, which is switchable into a generator mode effectuating a deceleration of the motor vehicle, as well as a friction braking device having multiple friction brakes, each assigned to a wheel, having brake elements, which are movable toward a brake disc via an actuator. A first braking is performed using the drive machine switched into the generator mode until a first threshold value of the regenerative power or deceleration is reached, after which additionally required braking power is provided by the friction braking device, which is also actuated upon reaching the threshold value.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: April 30, 2024
    Assignee: AUDI AG
    Inventor: Roman Straßer
  • Patent number: 11781541
    Abstract: The present disclosure provides an oil-scavenge pump, which includes a cap member, a piston member, a resilient member and a filter member. The filter member interconnects the cap member and the piston member. The resilient member is disposed between the cap member and the piston member. The cap member includes a cap head, a pump valve connected to the cap head, a first-resilient unit disposed and a first sphere disposed between the first-resilient unit and the pump valve. The piston member includes a main portion, a piston seat, a second-resilient unit, a second sphere and a rod portion. The piston seat has two ends respectively connected to the piston head and the rod portion. The second-resilient unit and the second sphere are disposed between the piston head and the piston seat. The filter member is mounted to surround the rod portion and engaged with the pump valve.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: October 10, 2023
    Assignee: CHIPMAST AUTOTRONIX CO., LTD.
    Inventors: Hung-Ta Kuo, Chi-Ju Lee
  • Patent number: 11767002
    Abstract: [Problem] A brake hydraulic pressure controller capable of being formed with a relatively large damper chamber while suppressing enlargement of a housing is provided. [Means for Resolution] The brake hydraulic pressure controller includes: a motor having a motor shaft; a skew plate fixed to a tip of the motor shaft and arranged to be inclined with respect to an axial direction of the motor shaft; and a pump element driven by rotation of the motor shaft and the skew plate. The pump element has: a piston that reciprocates in parallel with the axial direction of the motor shaft in conjunction with the rotation of the skew plate; an accommodation chamber that accommodates a part of the piston and to which a brake fluid is introduced; a release valve that releases the brake fluid from the accommodation chamber; and a pressure damper chamber that is provided in a reciprocal direction of the piston and into which the brake fluid released from the release valve flows.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 26, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Tsutomu Ninbari, Yoshio Tajika
  • Patent number: 11668291
    Abstract: The present disclosure provides an oil scavenge pump, which includes a cap member, a piston member and a resilient member. The cap member and the piston member are connected to each other and with the resilient member therebetween. The cap member includes a cap head, a valve connected to the cap head, a resilient unit disposed between the cap head and the valve, and a first sphere disposed between the resilient unit and the valve. The piston member includes a valve stopper, a main portion, a second sphere, a rod portion, a first-seal ring and a second-seal ring. The main portion has two ends respectively connected to the valve stopper and the rod portion. The second sphere is disposed between the valve stopper and the main portion. The first-seal ring and the second-seal ring respectively surround the main portion and the rod portion.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: June 6, 2023
    Assignee: CHIPMAST AUTOTRONIX CO., LTD.
    Inventors: Hung-Ta Kuo, Chi-Ju Lee
  • Patent number: 11539258
    Abstract: An electric oil pump includes a motor including a shaft, a pump driven via the shaft, and an inverter assembly located on a rear side of the motor and secured to the motor. The motor includes a rotor, a stator, and a motor housing that houses the rotor and the stator. The pump includes a pump rotor and a pump housing. The motor housing has a bottomed tubular shape that includes a bottom portion on a side of the inverter assembly, and the inverter assembly includes an inverter housing including a circuit board housing that houses a circuit board and a busbar holder. The busbar holder is on a side opposite to a terminal that is electrically connected to the circuit board with respect to the shaft in the circuit board housing.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: December 27, 2022
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Shigehiro Kataoka, Yoshiyuki Kobayashi
  • Patent number: 11215287
    Abstract: A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: January 4, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Bernd Haeusser, Oliver Gaertner
  • Patent number: 11208086
    Abstract: A hydraulic pressure controller, cost of which can be cut, a straddle-type vehicle brake system, and a straddle-type vehicle are obtained. A hydraulic pressure controller (110) is used for the straddle-type vehicle brake system which includes a single system of a hydraulic circuit capable of controlling a hydraulic pressure and in which brake fluid in a wheel cylinder is released to a master cylinder without increasing the hydraulic pressure. A first coil (112B), a second coil (113B), and a hydraulic pressure detector (116) are erected on the same surface of a base body (111). An axis of the hydraulic pressure detector (116) is offset from a reference plane including an axis of the first coil (112B) and an axis of the second coil (113B), and is located between a first plane that is orthogonal to the reference plane and includes the axis of the first coil (112B) and a second plane that is orthogonal to the reference plane and includes the axis of the second coil (113B).
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: December 28, 2021
    Assignee: Robert Bosch GmbH
    Inventor: Shigeki Ikeda
  • Patent number: 11091131
    Abstract: Disclosed is an actuator of an electronic brake system including: a drive unit generating a power and including a motor having a stator and a rotor; a piston unit operated by the drive unit and including a piston reciprocating in a bore chamber provided in a piston housing to contain a fluid; a power transmission unit having one end coupled to the rotor and the other end coupled to the piston to convert a rotational motion of the rotor into a linear motion of the piston; a sensing magnet coupled to the power transmission unit to rotate along the motor; and a motor position sensor disposed coaxially with and spaced apart from the sensing magnet to sense a position of the motor based on the rotation of the sensing magnet.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 17, 2021
    Assignee: MANDO CORPORATION
    Inventor: Youngsong Lee
  • Patent number: 11070106
    Abstract: An electric oil pump includes a motor unit having a shaft centered on a central axis that extends in an axial direction of the shaft and a pump unit which is disposed on a front side of the motor unit, is driven by the motor unit, and discharges oil. The motor unit includes a rotor that is fixed on a rear side of the shaft, a stator that is disposed outside the rotor in a radial direction, a resin housing in which the rotor and the stator are housed, and a connector assembly that is disposed outside the resin housing in the radial direction. The connector assembly is integrally molded with the resin housing. The pump unit includes a pump rotor installed to the shaft that protrudes from the motor unit and a pump housing in which the pump rotor is housed.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 20, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Shigehiro Kataoka, Yoshiyuki Kobayashi, Noriyuki Ikeda
  • Patent number: 11046292
    Abstract: A method for decreasing brake-pressure of an electronically slip-controllable power braking system (ESPBS) and an ESPBS. The wheel-brake pressure is generated by electronic activation of a drive motor (DM) of a pressure generator (PG) (external force). The driver indicates braking intention by actuating a master brake cylinder, which is set indirectly by a control unit via electronic activation of the DM. Plunger devices (PDs) include a plunger piston (PP), accommodated moveably in a plunger cylinder (PC). Driven by the DM, PP and PC execute a translational movement in relation to one another. A pressure buildup/decrease is performable in a BC connected to the PD as a function of movement direction. To avoid pressure medium contaminated with gas entering the BC undetected during pressure decrease after cancellation of the intention, actuation of the PD in the pressure-decrease direction is performed until the BC pressure has dropped to a pre-determinable threshold and ended.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 29, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Daniel Frank, Tim-Philipp Jesse, Kevin Wodrich
  • Patent number: 10940848
    Abstract: An electric component assembly includes a housing with which an electric component is fitted together, and the electric component and the housing are fixed to one side of a base body. The electric component includes a connecting terminal configured to be press-fitted in a through-hole of the control board of the housing, and a direction in which the connecting terminal is inserted into the through-hole is same as a fitting direction relative to the housing. There are provided a rib protruding from one of the electric component and the housing, and a groove portion recessed from another one of the electric component and the housing and into which the rib is press-fitted. Movement of the electric component in a direction intersecting the fitting direction and rotation of the electric component around an axis parallel to the fitting direction are restrained by the rib press-fitted into the groove portion.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: March 9, 2021
    Assignees: Nissin Kogyo Co., Ltd., Veoneer Nissin Brake Systems Japan Co., Ltd.
    Inventors: Kentaro Chiba, Takaaki Komaba
  • Patent number: 10744993
    Abstract: A method monitoring a pneumatically actuatable brake for motor vehicles, wherein an air gap of the brake is ascertained using measured position values provided by a brake wear sensor, includes ascertaining a reference position value of the brake wear sensor during unbraked travel, determining multiple value pairs of discrete position values and a current brake pressure P at a same point in time during a braking procedure, ascertaining a characteristic function interpolating the value pairs, determining a characteristic position value according to the characteristic function for a selected brake pressure, and determining an actual value of the air gap by subtracting the reference position value from the characteristic position value.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: August 18, 2020
    Assignee: WABCO EUROPE BVBA
    Inventors: Thomas Dieckmann, Marcos Keller, Denis Kusin, Torsten Wallbaum
  • Patent number: 10744990
    Abstract: An arrangement of an electric vacuum pump, for example, in a vehicle, wherein a mounting element is provided on which the vacuum pump is installed, and wherein the vacuum pump comprises a pump chamber part and a motor part, and wherein a longitudinal axis extends through the pump chamber part and the motor part. According to the invention, the vacuum pump has a horizontal arrangement with respect to a gravitational direction, wherein the installation of the vacuum pump on the mounting element is limited to two mounting points, and wherein a center of gravity of the vacuum pump lies on a connection axis between the two mounting points.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 18, 2020
    Assignee: HELLA GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hueser, Christian Praest, Thomas Valeiras Fernandez
  • Patent number: 10480510
    Abstract: The oil-free screw compressor includes: a casing having a rotor chamber; a bearing supporting rotary shafts of screw rotors; a shaft seal device with an oil seal portion and an air seal portion; a ventilation gap positioned between the oil seal portion and the air seal portion; and an atmosphere open passage communicating an atmosphere side of the casing with the ventilation gap communicate. A most narrowed portion, an air seal portion, and oil seal portions are set such that the followings is established: (La/Sa2.5)/(Lh/Sh2.5)>|P2|/?Pb La: effective shaft seal length Sh: effective open cross-sectional area (most narrowed portion of atmosphere open passage) Lh: effective narrowed length (most narrowed portion of atmosphere open passage) Sa: shaft seal cross-sectional area |P2|: negative pressure in rotor chamber during unloading operation ?Pb: minimum differential pressure in the oil seal portion during the unloading operation.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: November 19, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Yoshio Yano, Toshiyuki Miyatake
  • Patent number: 10284046
    Abstract: There is provided a DC brush motor that is provided with: a magnet; an armature configured to rotate relative to the magnet about a rotary axis, the armature comprising a commutator; a bracket configured to cover one end portion of the magnet and the armature at one side along the rotary axis; a female terminal that is fixed to the bracket; a brush that is electrically connected to the female terminal, and a sealing member that is fixed to the bracket. The bracket is provided with a recessed portion formed on an outer periphery thereof and configured to accommodate therein the female terminal. The sealing member is configured to seal between the recessed portion and a space where the commutator and the brush exist.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 7, 2019
    Assignee: Minebea Co., Ltd.
    Inventors: Minoru Kuroda, Masami Ota
  • Patent number: 10106136
    Abstract: An electronic control unit includes: a sensor board on which a sensor is mounted; a control board configured to control an operation of each electric component, based on a physical quantity detected by the sensor; and a housing configured to accommodate the sensor board and the control board, wherein: in an internal space of the housing, a first accommodation chamber in which the electric component is accommodated, a second accommodation chamber in which the sensor board and the control board are accommodated in a hierarchical state, and a partitioning portion which partitions between the first accommodation chamber and the second accommodation chamber are formed; and the sensor board and the control board are supported by the partitioning portion, and a rib is protrudingly provided on the partitioning portion.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 23, 2018
    Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
    Inventor: Masatoshi Iyatani
  • Patent number: 9783176
    Abstract: A hydraulic assembly for a vehicle brake system comprising at least two brake circuits and wheel brakes associated with the brake circuits. The hydraulic assembly comprises a pressure generator for generating a central hydraulic pressure for the brake circuits independently of the driver at least in the case of service braking initiated by the driver. Furthermore, at least one pressure adjusting device is provided for adjusting for each individual brake circuit the central hydraulic pressure that is generated by the pressure generator independently of the driver.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 10, 2017
    Assignee: Lucas Automotive GmbH
    Inventors: Leo Gilles, Boris Koeth
  • Patent number: 9663084
    Abstract: A rotating pumping apparatus is provided which may be employed in an automotive brake system. The rotating pumping apparatus includes a sealing member and a pressure member. The sealing member is disposed around a pump drive shaft. The pressure member includes a plate spring, a first rotation stopper, and a second rotation stopper. The first rotation stopper serves to stop the pressure member from rotating following rotation of the pump drive shaft. The second rotation stopper engages the seal ring to stop the sealing member from rotating following the rotation of the pump drive shaft. The plate spring works to elastically press the sealing member against a stopper wall of a pump casing to stop the sealing member from moving in an axial direction of the pump drive shaft.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 30, 2017
    Assignee: ADVICS CO., LTD.
    Inventors: Junichi Maeda, Yoshitake Hisada, Toshiya Hayashi, Shinya Mitani
  • Patent number: 9631949
    Abstract: A rotation angle detecting device includes: a magnet member placed in a shaft member to face a magneto-electric conversion element and detecting a rotation angle of the shaft member in response to a relative rotation of the magnet member with respect to the magneto-electric conversion element, wherein the magnet member has a magnet where a groove formed in a rectangular parallelepiped body having maximum surfaces orthogonal to an axis of the shaft member is formed to be open to one maximum surface side of the rectangular parallelepiped body and extend in parallel to a short-side lateral surface of the rectangular parallelepiped body, and is magnetized along the groove with respect to the magnet.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 25, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shouta Ueno, Toshiyuki Matsuo, Shinsuke Fushimi
  • Patent number: 9561787
    Abstract: A hydraulic braking system is provided as well as a method, relating to a master brake cylinder, a first brake pressure generator, as well as a wheel brake cylinder. The braking system includes a second brake pressure generator which is connected to the at least one wheel brake cylinder. The master brake cylinder is hydraulically connectable to the at least one wheel brake cylinder via the second brake pressure generator. This has the advantage that a secure braking system may be provided including one additional fallback level, hydraulically via the driver as well as by providing a second, additional brake pressure generator.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: February 7, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Werner Quirant, Karl-Heinz Willmann, Urs Bauer
  • Patent number: 9546663
    Abstract: A heat circulation pump includes a pump housing (1) with a pump impeller arranged therein which is driven by an electric motor arranged in a motor housing (8) which axially connects to the pump housing (1). The heat circulation pump also includes a terminal box (12) which is axially connected to the motor housing (8) in order to receive electric and/or electronic components of the engine control. A plug or socket (34) of an electric plug connection is arranged on the outside of the terminal box (12) for the electric connection. The plug or socket (34) is/are axially offset with respect to the terminal box (12) and is/are arranged adjacent to the motor housing (8).
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: January 17, 2017
    Assignee: GRUNDFOS MANAGEMENT A/S
    Inventors: Finn Mathiesen Høj, Thomas Blad
  • Patent number: 9523439
    Abstract: Provided is a brake hydraulic device for a vehicle, including: a base body having a hydraulic pressure path for brake fluid formed therein; an electromagnetic valve which opens and closes the hydraulic pressure path; an electromagnetic coil which drives the electromagnetic valve; and a housing attached to the outer surface of the base body and having a housing chamber for accommodating the electromagnetic valve and the electromagnetic coil. The housing includes a peripheral wall part having openings formed on a front side and a rear side thereof, and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side. The housing chamber is provided on the rear side of the intermediate wall part, and recessed portions and a projecting portion is formed on a front surface of the intermediate wall part.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: December 20, 2016
    Assignee: Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventor: Motoyasu Nakamura
  • Patent number: 9410640
    Abstract: A valve of an accumulator device, which is formed by an accumulator cylinder and an accumulator piston guided therein, includes a valve sealing body. The valve sealing body is configured to selectively open and close a valve opening at a valve seat. The valve also includes an opening mechanism configured to selectively raise the valve sealing body from the valve seat. The opening mechanism is held by a spring element, and the spring element is formed by a punched and bent part.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: August 9, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Franz Mayer, Klaus-Peter Schmoll, Dietmar Kratzer, Edgar Kurz
  • Patent number: 9404514
    Abstract: A hydraulic block for a hydraulic unit of a slip-controlled hydraulic vehicle brake system includes a row of receptacles for brake pressure buildup valves and a row of receptacles for brake pressure reduction valves arranged parallel to the row of receptacles for the brake pressure buildup valves. The hydraulic block further includes installation spaces for damper chambers arranged between the receptacles for the brake pressure buildup valves and the brake pressure reduction valves to allow space-saving accommodation of damper chambers. The installation spaces emerge at longitudinal sides of the hydraulic block and run parallel to the rows of receptacles for the brake pressure buildup valves and the brake pressure reduction valves. The installation spaces for the damper chambers viewed from a front side are arranged below the receptacles for the brake pressure buildup valves and the brake pressure reduction valves, close to a rear side of the hydraulic block.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: August 2, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Andreas Weh
  • Patent number: 9273685
    Abstract: A piston pump assembly for pumping a fluid including a pump housing defining a bore. The pump housing further defines a fluid inlet and a fluid outlet and a fluid flow path extending therebetween for conveying the fluid from the fluid inlet to the fluid outlet. A piston is slidably disposed in the bore of the pump housing, and an eccentric engages the piston to propel the fluid through the fluid flow path. An inlet check valve and an outlet check valve body are disposed in the bore for only allowing the fluid to flow in one direction from the fluid inlet to the fluid outlet. A filter is disposed in the fluid flow path downstream of the inlet check valve and the outlet check valve body and adjacent to a damper orifice for filtering debris from the fluid before the fluid is conveyed to the fluid outlet.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: March 1, 2016
    Assignee: BeijingWest Industries Co., Ltd.
    Inventors: David F. Reuter, Adam M. Osswald, Jay P. Johnson
  • Patent number: 9254913
    Abstract: The present disclosure relates to hybrid brake systems. The hybrid brake systems may comprise one or more electromechanical actuators and one or more hydraulic adjusters. The hybrid brake system may further comprise a housing configured to store and/or conduct fluid. The hybrid brake system may also further comprise a fluid reservoir. The hybrid brake system may be redundant.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: February 9, 2016
    Assignee: Goodrich Corporation
    Inventors: David B. Drennen, Robert L. French, Kevin E. Rehfus
  • Patent number: 9233677
    Abstract: There is provided a vehicle brake system wherein it is possible to prevent the ingress of brake fluid leaking from the cylinder main body of an electric brake actuator constituting the vehicle brake system, and to dispose the electric brake actuator in a power plant storage chamber in a space-efficient manner. A vehicle brake system configured by disposing an input device and a motor cylinder for generating brake fluid pressure by driving a hydraulic pressure controlling piston stored in a cylindrical cylinder main body by means of an electric motor at least in accordance with the brake operation, the vehicle brake system being characterized in that: the motor cylinder is attached in a manner such that at least a portion of the cylinder main body overlaps with a power plant in the vehicle up and down direction; and the electric motor is disposed on top of the cylinder main body.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: January 12, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takaaki Ohnishi, Kazuaki Murayama
  • Patent number: 9216723
    Abstract: A method for controlling the wheel brake pressures in wheel brake cylinders in a hydraulic vehicle braking system proposes to connect the wheel brake cylinders via wheel valves to a piston pump, the pistons of which are double-action pistons, and the two piston sides are connectable by means of pump valves. In order to increase the wheel brake pressure, the wheel valves are opened during a delivery stroke of the piston pump and the pump valves are closed, and the wheel valves are closed and the pump valves opened during a suction stroke. In order to reduce the wheel brake pressures, the valves are controlled in reverse.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: December 22, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Patent number: 8992194
    Abstract: A seal member is configured so that an annular rubber member is disposed in an annular storage chamber of a resin annular member. Thus, the rubber annular member is not directly in contact with a drive shaft, and the rubber annular member can be prevented from wearing or peeling without requiring a rotation stopping structure for the seal member. Furthermore, the seal member is provided with first and second communication mouths, so that a brake fluid pressure is applied to compartments obtained by dividing the annular storage chamber using the rubber annular member. Thus, the rubber annular member is pressed, and then is elastically deformed, and accordingly, the resin annular member is expanded by the elastic force. Thus, a self-sealing operation can be performed on the basis of a high pressing force.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: March 31, 2015
    Assignee: Advics Co., Ltd.
    Inventors: Yuki Nakamura, Tomoaki Kawabata
  • Patent number: 8845038
    Abstract: A piston pump includes a piston assembly which has a first piston element, a second piston element, and at least one transverse bore which corresponds to a longitudinal bore. The piston pump further includes a cylinder in which the piston assembly is guided in a longitudinally movable manner, and an inlet valve which includes a cage element, in which an inlet valve spring and sealing element are arranged, and a corresponding inlet valve seat which is arranged on the piston assembly. The inlet valve sealing element can be pressed sealingly into the corresponding inlet valve seat by means of a restoring spring in order to close off the longitudinal bore. The second piston element is configured as a sleeve made of a wear-resistant material, which accommodates axially acting power components. The inlet valve seat is disposed on a bending edge of the second piston element configured as a sleeve. The at least one transverse bore corresponding to the longitudinal bore is placed in the second piston element.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: September 30, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Josef Hipp, Beate Schumann, Horst Beling, Marc Zimmermann, Stefan Hallermann
  • Patent number: 8780564
    Abstract: A solenoid control apparatus includes a resin housing having a solenoid mounting portion, a connector portion, and a circuit board mounting portion in which a circuit board is mounted. Terminals extending from the solenoid mounting portion and the connector portion are soldered to the electrical circuit on the circuit board. The circuit board has a reduced-rigidity portion in its area corresponding to a portion of the resin housing through which the connector portion is connected to the solenoid mounting portion. The reduced-rigidity portion is formed by reducing the amount of material forming the circuit board per unit area, and is more easily deformable than the remaining portion of the circuit board. When the connector portion is thermally deformed, the circuit board is also easily deformable about the reduced-rigidity portion. This reduces stress on the soldered portions.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: July 15, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Koji Yanai, Masayuki Hijikata, Takanobu Inagaki, Tetsuya Yoshijima, Toshimasa Miyazaki
  • Patent number: 8684473
    Abstract: A gear pump includes: a drive shaft; a first gear; a second gear; a first plate disposed between the first gear and the second gear, and arranged to liquid-tightly seal the first surfaces of the first and second gear; a pair of second plates disposed, respectively, on the second surfaces of the first and second gears, and arranged to liquid-tightly seal the second surfaces of the first and second gears, each of the second plates including a tooth top sealing portion having a seal surface arranged to seal a tooth top of the first gear and a tooth top of the second gear, and to form a suction portion with the first plate and the second plate; and an urging member arranged to urge the drive shaft toward the seal surface of the tooth top sealing portion of one of the first and second plates.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: April 1, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Chiharu Nakazawa, Yoshiki Sakamoto, Ryohei Maruo, Toshihiro Koizumi
  • Patent number: 8672418
    Abstract: A sealing structure is provided wherein an annular groove formed in a pump cylinder of a piston pump receives therein a seal ring made of a synthetic resin material and having an inner circumferential surface fluid-tightly contacting an outer circumferential surface of the pump piston and an O-ring arranged on the outer circumferential side of the seal ring and urging the seal ring radially inward. The seal ring is formed at its axial end portions with flange portions for preventing the O-ring from coming off. In the state that the seal ring and the O-ring are fitted in the annular groove, the flange portions do not receive a load from the O-ring, and a surface pressure which the seal ring applies to the outer circumferential surface of the piston at an axial center portion thereof is set to be higher than surface pressures which it applies to the outer circumferential surface of the piston at axial end portions thereof.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 18, 2014
    Assignee: Advics Co., Ltd
    Inventors: Tomoo Harada, Tsunekazu Nishida
  • Patent number: 8622486
    Abstract: The invention is based on a hydraulic unit for regulating the brake pressure in a vehicle brake system. Hydraulic units of such a type are the core component of an anti-lock vehicle brake system, of a drive slip vehicle brake system or of a vehicle brake system which regulates driving stability. The invention proposes a particularly advantageous arrangement of the required recesses in a housing block of a hydraulic unit. On account of the arrangement, the housing block can be reduced in terms of its dimensions, and can be produced with a lower weight and more simply in terms of production. For this purpose, according to the invention, the pressure fluid connection from one of the ports of the master brake cylinder to the suction side of one of the pump elements extends through the valve receptacle of the switching valve.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: January 7, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Tandler, Andeas Weh
  • Patent number: 8585372
    Abstract: A motor/pump assembly for a motor vehicle brake system including a pump and a motor driving the pump, the pump having opposite working diaphragms which are, in each case, mounted between a pump casing and a cover and thereby delimit a space and which can be moved by a crank drive, the space being assigned, in each case, an inlet duct with an inlet valve and an outlet duct with an outlet valve. The outlet ducts are arranged in the covers and in the pump casing such that air displaced out of the spaces is conducted into an inner space surrounding the crank drive of the pump casing and that an air outlet unit be provided, which allows a low-noise blow-out of the air from the inner space as a result of the deflection of the air.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: November 19, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Jens Bacher, Lazar Milisic, Wolfgang Ritter, Karlheinz Seitz, Manfred Rüffer, Jose Gonzalez, Thomas Stahl, Michael Jürging, Yuejun Qian
  • Patent number: 8500215
    Abstract: A hydraulic unit for slip-controlled braking systems has a plurality of receiving holes for transport devices associated with a plurality of hydraulic circuits bundled into groups, wherein the receiving holes are disposed at a distance from each in parallel with the upper side and a drive shaft having eccentrics located at the plane spacing for driving the transport devices. In order to provide a compromise optimized for manufacturing a small, convenient hydraulic unit, it is proposed that three theoretical planes (E1, E2, E3) are arranged in parallel to the upper side, each receiving two V-shaped receiving holes for transport devices disposed at an angle to each other, and that the drive shaft includes three separate eccentrics for driving the transport devices.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: August 6, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Heiko Gastauer, Petra Fischbach-Borazio, Axel Hinz, Uwe Greiff
  • Patent number: 8496303
    Abstract: A pump assembly including a housing, a pump unit having a low pressure portion and a high pressure portion and accommodated in a pump unit receiving portion which is formed in the housing, a suction passage, a low pressure chamber communicated with the suction passage and the low pressure portion, and a discharge passage, wherein when the pump unit is accommodated in the pump unit receiving portion, the low pressure chamber is formed between the pump unit and a wall surface of the housing which defines the pump unit receiving portion, and the discharge passage is formed by a communication pipe which extends through the low pressure chamber and communicates the housing and the high pressure portion of the pump unit with each other.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: July 30, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masaki Misunou, Chiharu Nakazawa
  • Patent number: 8388328
    Abstract: In an inner wall surface of a casing, grooves are formed that correspond to end faces of an outer rotor and an inner rotor, and seal members are disposed within the grooves, the seal members presses against the end faces of the outer rotor and the inner rotor. Inclined portions are provided in sealing portions of resin members of seal members, the sealing portions covering a closed portion. With this configuration, an internal pressure in the closed portion causes the inclined portions to separate from an outer rotor and an inner rotor when a brake fluid pressure within the closed portion increases to the point that the brake fluid is excessively compressed, releasing the brake fluid that is inside the closed portion. It is therefore possible to prevent the brake fluid pressure from increasing excessively within the closed portion.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: March 5, 2013
    Assignees: Advics Co., Ltd., Nippon Soken, Inc.
    Inventors: Takahiro Yamaguchi, Hiroyuki Shinkai, Takutou Takahashi, Kazunori Uchiyama, Naoki Hakamada
  • Patent number: 8366208
    Abstract: A brake unit for a hydraulic, single-circuit or multi-circuit braking system of a land vehicle, with fluid on-off valves to be operated electrically, an electronic closed-loop/open-loop control circuit to provide control signals for the fluid on-off valves by which the hydraulic pressure in the brake circuits is modulated, a unit body, which consists of at least two ceramic boards connected to each other, and which has the fluid on-off valves, hydraulic connecting lines between the fluid on-off valves being incorporated in the boards, and at least one of the boards being used as the carrier board for electrical/electronic components and electrical connecting lines of the electronic open-loop/closed-loop control circuit.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: February 5, 2013
    Assignee: Compact Dynamics GmbH
    Inventors: Andreas Gründl, Bernhard Hoffmann
  • Patent number: 8366206
    Abstract: A flange 62 having motor mounting through holes 63 is provided on a motor 6, motor mounting holes 19 are provided on a base body 1, so that motor mounting screw 61 are passed through the motor mounting through hole 63 from a back surface 1b side so as to be screwed into the motor mounting holes 19 to fix the motor 6 to the base body 1. Housing mounting holes 83 are provided on a control housing 8, housing mounting through holes 17 are formed on the base body 1 so as to be offset from portions which are in abutment with the flange 62, so that housing mounting screws 81 are passed through the housing mounting through holes 17 from the back surface 1b side so as to be screwed into the housing mounting holes 83 to fix the control housing 8 to the base body 1.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: February 5, 2013
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Takuro Kodama, Motoyasu Nakamura
  • Patent number: 8287054
    Abstract: The invention relates to an electrohydraulic control system (1) for the actuation of at least one actuator (2-5), in particular a piston-cylinder assembly in a motor vehicle, having an assembly (7) comprising an electronic control unit (ECU), having an electric motor (8) which is activated by the electronic control unit (ECU) in order to drive a high pressure pump (9), and having a receiving body for receiving electrohydraulic valves (10-17), for receiving channels and for receiving the controllable high pressure pump (9) which is connected to a pressure transducer (27) and/or vessel (34) via a hydraulic connection (30, 31; 32, 33), and can also be connected to a pressure space of the actuator (2-5), in particular piston-cylinder assembly, wherein the electrohydraulic valves (10-17) and the electric motor (8) are networked to the electronic control unit (ECU), and wherein the electrohydraulic valves (10-17) are provided both for ventilating the high pressure pump (9) and for controlling the volume flow and/or
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: October 16, 2012
    Assignee: Continental Teves AG & Co. oHG
    Inventor: Wilhelm Beer
  • Patent number: 8123308
    Abstract: The invention relates to a device for suspending a unit, especially a hydraulic unit of an electronically traction-controlled brake system of a motor vehicle. The unit is suspended in a receptacle provided on the vehicle such that vibrations are damped. Hydraulic units of vehicle brake systems are usually equipped with an electric motor for driving pumps located in the hydraulic unit. The brake pressure in the wheel brakes can be modulated via the pumps. The pump drive can cause mechanical and hydraulic vibrations in the unit which can result in unwanted operational noise in case the vibrations are transmitted to the vehicle body without being damped. The improved device is manually preloaded due to limited space for using tools. A clamping mechanism is guided in an axially movable manner on an armature which is fixed to the hydraulic unit and which can be moved from a basic position into a clamping position. The clamping mechanism is interlocked with the armature in both positions.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: February 28, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Michael Schlitzkus, Andreas Weh, Matthias Mayr
  • Patent number: 8038230
    Abstract: A vehicle brake hydraulic pressure controller provided with a stroke simulator including a dummy cylinder includes a base member, a plurality of electromagnetic valves, a motor and pumps. The base member is constituted with a flow path in correspondence with a brake system. A plurality of the electromagnetic valves is attached to one face of the base member for controlling a flow of a brake fluid in the flow path. The motor is attached to other face constituting a back face side of the one face of the base member. The pumps are attached to a side face contiguous to the one face of the base member and are driven by the motor for delivering the brake fluid to the flow path. The dummy cylinder and the pumps are aligned at the base member with axis lines in a longitudinal direction being substantially in parallel with each other.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: October 18, 2011
    Assignee: NISSIN KOGYO Co., Ltd.
    Inventor: Motoyasu Nakamura
  • Patent number: 7967395
    Abstract: In braking pressure control unit for a vehicle braking system, a space is formed, which is neighboring to electric brushless motors and arranged at ends of electromagnetic valves in a direction of a motor shaft of the electric motor. A printed circuit board for a motor driving circuit and a printed circuit board for a valve control circuit are arranged side-by-side in the space in the direction of the motor shaft. As a result, a longitudinal direction of the braking pressure control unit is suppressed to a small amount.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: June 28, 2011
    Assignee: Advics Co., Ltd.
    Inventor: Moriharu Sakai
  • Patent number: 7959238
    Abstract: The motor of an anti-lock braking system comprises a stator having six stator poles and a rotor with a rotor core having nine teeth. The rotor is rotatably mounted to the stator with the rotor core confronting the stator poles. Rotor windings are wound about the teeth and electrically connect to a commutator fixed to a rotor shaft. A bearing is fixed onto one end of the rotor shaft. Pump pistons radially attach to the bearing. The mechanical centreline of the bearing is offset from the rotational axis of the rotor shaft so that the pistons are driven by the bearing when the rotor turns. The windings comprise a plurality of concentrated coils so that the coils do not overlap with each other. The axial length of the motor is thus reduced.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: June 14, 2011
    Assignee: Johnson Electric S.A.
    Inventors: Rui Feng Qin, Ting Tuan Xu, Fei Liu
  • Patent number: 7883158
    Abstract: The invention relates to a hydraulic unit for a hydraulic vehicle brake system having anti-skid control. The hydraulic unit includes a hydraulic block and an electric motor for driving hydraulic pumps inside the hydraulic block. The hydraulic block and electric motor are joined at a circumferential joint. For connection, the invention provides that the electric motor is provided with a radial flange, which is overlapped by a surrounding bead of the hydraulic block. The bead is designed so that it overlaps, in a radial inward manner, the radial flange of the electric motor by a joining process, for example, a surrounding caulking. The electric motor is sealingly connected to the hydraulic block in a simple manner by the surrounding joining process.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: February 8, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Reiner, Rainer Schwarz, Andreas Weh, Tomoya Ideguchi, Dietmar Hofmann, Josef Hipp
  • Patent number: 7866764
    Abstract: A hydraulic control unit of an electronically controlled hydraulic brake system has a housing (49) accommodating a pump (35) and at least one low-pressure accumulator. The low-pressure accumulator is positioned in a location at a lower height than the cam cavity (51) of the pump (35), and a drainage bore (53) connects the cam cavity (51) with the spring chamber (68) of at least one of the low-pressure accumulators. This allows the drainage of brake fluid from the cam cavity (51) into the spring chamber (68) solely by way of gravity. Thus this measure eliminates the risk of damage to the pump motor in the event that ambient water penetrates the cam cavity (51), which might flush brake fluid from the cam cavity 51 into the housing (49) of the pump motor.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: January 11, 2011
    Assignee: Continental Teves, Inc.
    Inventor: Adrian Crimpita
  • Patent number: 7845738
    Abstract: A hydraulic control unit for a motor vehicle having a motor providing a drive shaft driving a rotatable piston bearing surface at a proximal end of the motor, a hydraulic block providing cavities housing a pumping assembly and fluid control valves, and a control section providing solenoid coils receiving portions of the fluid control valves, with the pump cavity being disposed on a first end of the hydraulic block and the valve cavities being disposed on an opposite end of the hydraulic block, and the pumping assembly being reciprocalably driven by the rotatable piston bearing surface along an axis radially disposed from and otherwise parallel to the axis of rotation of the rotatable piston bearing surface. In another aspect, a pump element having a ball bearing assembly mounted at an oblique angle with respect to the axis of rotation of a seat, and a pumping assembly reciprocally bearing against an outer portion of the ball bearing assembly.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: December 7, 2010
    Assignee: BWI Company Limited S.A.
    Inventors: Daniel N. Borgemenke, David F. Reuter, Jerry L. Newton, Jeffrey Scott Altherr, Terry Lee Fruehling
  • Patent number: RE43737
    Abstract: A regenerative brake system and a variable displacement pump/motor for use therein. Each cylinder of the pump/motor having a main piston and a second piston between which is defined a space for hydraulic fluid, and a resilient element acting on the second piston to bias it toward the main piston. Variable displacement is achieved by controlling a volume of pressurized fluid that is injected and exhausted between the main and second pistons. Brake, drive and neutral modes of operation of the pump/motor are achieved by controlling the timing (relative to a drive shaft phase) of the injection and exhaust of the fluid. Regeneration is achieved by storing pressurized fluid generated by the pump/motor in an accumulator in brake mode and using the stored pressurized fluid to power the pump/motor in drive mode.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: October 16, 2012
    Assignee: Tonand Brakes Inc.
    Inventor: Antonio Cannata
  • Patent number: RE44100
    Abstract: A regenerative brake system and a variable displacement pump/motor for use therein. Each cylinder of the pump/motor having a main piston and a second piston between which is defined a space for hydraulic fluid, and a resilient element acting on the second piston to bias it toward the main piston. Variable displacement is achieved by controlling a volume of pressurized fluid that is injected and exhausted between the main and second pistons. Brake, drive and neutral modes of operation of the pump/motor are achieved by controlling the timing (relative to a drive shaft phase) of the injection and exhaust of the fluid. Regeneration is achieved by storing pressurized fluid generated by the pump/motor in an accumulator in brake mode and using the stored pressurized fluid to power the pump/motor in drive mode.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: March 26, 2013
    Assignee: Tonand Brakes, Inc.
    Inventor: Antonio Cannata