52 patents
Utility
Pump device including return passage for returning fluid from discharge passage to suction passage
9 Jan 24
A pump device includes a housing, a pump element, and an on-off valve.
Yasuhiro Ino
Filed: 12 Jan 23
Utility
Accelerator pedal device
28 Nov 23
An accelerator pedal device of the present invention includes: an accelerator pedal; a hysteresis generation mechanism that generates a hysteresis in pedal effort during a depression operation and a return operation of the accelerator pedal; a reaction force addition mechanism that adds a reaction force in a direction to push back the accelerator pedal; and a control unit that controls the drive of the reaction force addition mechanism in a manner that, with a predetermined target opening degree at which the accelerator pedal is depressed as a boundary, a ratio of change in the pedal effort in an opening degree range above the target opening degree becomes relatively larger than a ratio of change in pedal effort in an opening degree range below the target opening degree.
Jun Nagashima
Filed: 1 Feb 19
Utility
Pump device with air introduction hole that opens into pump chamber at predetermined opening time immediately before suction stroke
24 Oct 23
The disclosure provides a pump device capable of suppressing hydraulic amplitude and reducing noise or vibration associated with hydraulic amplitude while simplifying the structure.
Norio Takehana
Filed: 17 Mar 22
Utility
Throttle device
3 Oct 23
A throttle device 1 includes a throttle valve 2 which is disposed in an intake passage 101, and includes a first valve body 20 and a first rotatable shaft 21 for rotatably holding the first valve body 20, a bypass valve 3 which is disposed in a bypass passage 8 connected to the intake passage 101 so as to bypass the throttle valve 2, and includes a second valve body 30 and a second rotatable shaft 31 for rotatably holding the second valve body 30, a common motor 4 for applying a driving force to the throttle valve 2 and the bypass valve 3, a first gear 5 configured to be able to transmit or block the driving force of the motor 4 with respect to the first rotatable shaft 21, a second gear 6 configured to receive the driving force of the motor 4 and transmit the driving force to the second rotatable shaft 31, and a sensor 7 for detecting a rotation amount of the second rotatable shaft 31 of the bypass valve 3 or another rotatable shaft rotating in conjunction with the second rotatable shaft 31.
Jun Kiyono
Filed: 16 Mar 21
Utility
Strain wave gear unit, gear transmission device, and valve timing changing device
19 Sep 23
This strain wave gear unit includes: a bottomed cylindrical first internal gear having internal teeth formed on a cylindrical part and a teeth-non-formed part protruding farther inward than the tooth bottom of the internal teeth in a corner area where a bottom wall part is integrally connected to the cylindrical part; a flexible cylindrical external gear having external teeth meshing with the internal teeth of the first internal gear, an opposed part opposed to the teeth-non-formed part with a gap therebetween, and an end part opposed to the bottom wall part to make contact therewith; a second internal gear arranged adjacent to the first internal gear and having internal teeth meshing with the external teeth; and a rotation member that causes the external gear to deform in an oval shape and causes the meshing position to move while partially meshing with the first internal gear and the second internal gear.
Yuuhei Sanekata
Filed: 10 Sep 19
Utility
Oil passage switching valve and valve timing changing apparatus
4 Jul 23
An oil passage switching valve suitable for a valve timing changing apparatus includes: a valve body, opening or closing an oil passage of operating oil; an urging spring, urging to position the valve body to a position corresponding to the retard position in a pause state; and a switching element, positioning the valve body to a position corresponding to the retard position when a state quantity of the operating oil is in a first range, and switching a position of the valve body in response to the state quantity (pressure or temperature) of the operating oil while resisting an urging force of the urging spring to position the valve body to a position corresponding to the advance position when the state quantity of the operating oil is in a second range greater than the first range.
Chikara Oikawa, Kairi Horiuchi
Filed: 10 Aug 20
Utility
Control device of brushless DC motor
9 May 23
The present invention includes a phase angle detection unit generating a phase angle signal switched at a timing at which a cogging torque generated with the rotation of a rotor of a brushless DC motor reaches near a peak on a negative side hindering the rotation of the rotor, an inverter circuit energizing coils of respective phases of the brushless DC motor by switching elements according to an input of a driving signal, an energization period calculation unit calculating an energization period Tw from a target rotation speed set for the brushless DC motor, and a drive control unit energizing the coils sequentially by outputting the driving signal to the respective switching elements for each energization period, gradually increasing a duty of the driving signals to the switching elements at a start of each energization period, and decreasing the duty after the phase angle signal is switched.
Naoki Kobayashi
Filed: 22 Dec 21
Utility
Intake manifold and outboard motor
25 Apr 23
An intake manifold which can ensure a pressure resistance strength, a mechanical strength, and the like and also reduce a passage resistance and an outboard motor which can be made smaller and thinner in a width direction.
Hirobumi Oosawa
Filed: 22 Jul 21
Utility
Rotation driving device
11 Apr 23
A rotation driving device includes: a body 10, made of resin, and having an accommodation hole 13 in a cylindrical shape with an axis S as a center; a motor M, comprising a rotor 60 provided in an accommodation hole of the body and rotating around the axis and a rotation shaft 40 integrally rotating around the axis with the rotor and extending in an axial direction; a first bearing B1 fixed to an end side of the body and a second bearing B2 fixed to the other end side of the body in the axial direction, so as to rotatably support the rotation shaft; and a first cover member 110 connected to the one end side of the body and a second cover member 120 connected to the other end side of the body.
Hisashi Shiokawa, Daiki Ihara, Shota Yagoh, Katsushi Takami
Filed: 18 Jan 22
Utility
On-vehicle brushless motor device and method of manufacturing the same
31 Jan 23
To provide an on-vehicle brushless motor device capable of being downsized with respect to an axial direction of a rotor and a method of manufacturing the same.
Tadashi Kobayashi
Filed: 5 Jun 20
Utility
On-vehicle brushless motor device and method of manufacturing the same
13 Dec 22
To provide an on-vehicle brushless motor device capable of being downsized with respect to an axial direction of a rotor and a method of manufacturing the same.
Tadashi Kobayashi
Filed: 5 Jun 20
Utility
Intake device for multiple-cylinder engine and fuel delivery pipe for intake device
6 Dec 22
The present invention provides an intake device and a fuel delivery pipe for a multiple-cylinder engine including a transpiration gas passage or an intake air pressure collecting passage capable of reducing the number of components and improving assembly operability.
Yuta Kiku
Filed: 9 Mar 22
Utility
Transmission mechanism and fluid control valve
8 Nov 22
A transmission mechanism includes: an intermediate shaft secured to a support portion provided in a valve body of an electric throttle valve and disposed in parallel to a motor shaft and a valve shaft; and an intermediate gear rotatably disposed at the intermediate shaft, in which the intermediate gear has a first intermediate gear engaged with a motor gear secured to the motor shaft and a second intermediate gear engaged with a valve gear secured to the valve shaft, the first intermediate gear and the second intermediate gear are integrally configured to be aligned in an axial direction of the intermediate shaft, a hemispherical recessed portion recessed upward around an axial center of the intermediate shaft is formed at a lower end portion of the intermediate gear, and a projecting portion projecting upward in a hemispherical shape around the axial center of the intermediate shaft and supporting the recessed portion is formed in a surface of the support portion facing the recessed portion of the intermediate gear.
Yuuhei Sanekata, Keigo Suzuki, Yuusaku Ide, Hiroki Ota
Filed: 16 Mar 22
Utility
Exhaust valve device for vehicle
20 Sep 22
Provided is an exhaust valve device 1 for a vehicle in which a valve element 7 is supported in an exhaust passage 4 by a rotating shaft 5 axially supported by a valve body 3, a flexible joint member 16 is secured to an output shaft 13a of a motor unit 13 attached to the valve body 3, and a lower end of the flexible joint member 16 and an upper end of the rotating shaft 5 are coupled via a rigid joint member 15, in which the rigid joint member 15 includes: a sealing element 18 having a sealing surface 18a and arm portions 18c, the sealing surface 18a being coupled to one end of the rotating shaft 5 and sealing an axially supported portion of one end of the rotating shaft to prevent exhaust gas from leaking, the arm portions 18c being formed in a periphery of the sealing surface 18a; and a transmission element 19 having a spring groove 19a and engagement grooves 19b, the spring groove 19a being coupled to the end of the flexible joint member 16, the engagement grooves 19b being engaged with the arm portions 18c of the sealing element 18 to restrict relative rotation.
Toshiaki Ishii, Makoto Koyama, Daisuke Takayama, Naoki Tanaka
Filed: 21 Jan 21
Utility
Electromagnetic switching valve
9 Aug 22
An electromagnetic switching valve includes: a sleeve, defining a port communicating with an oil passage; a spool, reciprocally movably disposed on an axis in the sleeve, opening and closing the port; an electromagnetic actuator, including a plunger disposed on the axis and a stator; a transmission member interposed between the plunger and the spool; and an energizing spring, energizing the spool toward the plunger.
Toshiki Ogasawara, Masashi Ueda
Filed: 24 Sep 20
Utility
Electromagnetic switching valve
19 Jul 22
An electromagnetic switching valve includes: a sleeve, defining a port communicating with an oil passage; a spool, reciprocally movably disposed on a predetermined axis in the sleeve, opening and closing the port; an electromagnetic actuator, including a plunger disposed on the axis and a stator exerting magnetomotive force on the plunger; and a tubular transmission member, disposed on the axis to be interposed between the plunger and the spool and transmit driving force.
Toshiki Ogasawara, Masashi Ueda
Filed: 24 Sep 20
Utility
Reed valve
5 Jul 22
A reed valve 1 includes: a valve body 4; a valve seat 6 having a valve hole 3 for passage of a fluid J; a casing 8 accommodating the valve body 4; and a reed 10 including an arm part 18 having a first end portion 22 connected to the casing 8, and a valve body support part 20 connected to a second end portion 24 of the arm part 18 and supporting the valve body 4 so that the valve hole 3 can be opened and closed.
Shingo Karino, Toshiaki Fujitani, Hiroyuki Kawarai, Mitsukuni Oyama
Filed: 9 Feb 21
Utility
Fuel supply device of engine
7 Jun 22
A fuel supply device of an engine includes a primary pump suctioning fuel to discharge the fuel to a first pipeline, a secondary pump connected in series to the primary pump via the first pipeline, and suctioning the fuel from the primary pump to supply the fuel through a second pipeline to an engine side, a tank storing the fuel and accommodating the secondary pump, an outflow part causing part of the fuel flowing from the first pipeline through the secondary pump to the second pipeline in the tank to flow outward, a third pipeline returning, to a suction side of the primary pump, gas-liquid mixed fuel generated by vaporizing the fuel flowing out from the outflow part, and a preloading part in one of portions of a circulation path formed between the primary pump and the tank by the first pipeline and the third pipeline and preloading the fuel.
Ryouji Ehara
Filed: 23 Aug 21
Utility
Impeller and centrifugal pump
31 May 22
Provided are an impeller and a centrifugal pump that can be simplified in structure and reduced in weight and cost, and that can be integrally molded by a mold or the like.
Norio Takehana, Hideaki Kusanagi, Yuichi Mikami, Atsushi Sugawara, Shin Saito
Filed: 22 Mar 20
Utility
Electronically controlled throttle device for engine
5 Apr 22
Provided is an electronically controlled throttle device for an engine driving to open and close a throttle valve (8) of a valve body (3) to which rotation of a motor (15) is transmitted from a driven gear (14) via a throttle shaft (6), and disposing a substrate (22) on which an excitation conductor (23) and a signal detection conductor (24) are arranged to face an exciting conductor (21) rotating together with the throttle shaft (6).
Yoshinobu Komoto
Filed: 23 Aug 18