68 patents
Page 2 of 4
Utility
Intake Device for Multiple-cylinder Engine and Fuel Delivery Pipe for Intake Device
15 Sep 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
Permanent Magnet-embedded Motor and Pump Device
4 Aug 22
A permanent magnet-embedded motor and a pump device are provided.
Shin SUZUKI, Takeo ISHIKAWA, Kota TAKATA
Filed: 1 Dec 21
Utility
Control Device of Brushless DC Motor
30 Jun 22
The present invention includes a phase angle detection unit detecting a rotation of a rotor of a brushless DC motor and generating a phase angle signal switched at a timing at which a cogging torque generated with the rotation of the rotor 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 UH, UL, VH, VL, WH, and WL according to an input of a driving signal, an energization period calculation unit calculating an energization period Tw by converting, into time, 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
Butterfly Valve Device
26 May 22
A butterfly valve device includes: a body that defines a passage through which a fluid flows and a bearing hole arranged on an axis; a shaft that is rotatably passed through the bearing hole, has a two-sided width portion formed in a region facing the passage and a slit hole penetrating a center of the two-sided width portion, and has a columnar outer contour; and a butterfly valve that is fitted into the slit hole and fixed to the shaft to open and close the passage.
Naoki TANAKA
Filed: 27 Sep 21
Utility
Accelerator Pedal Device
21 Apr 22
An accelerator pedal device according to the present invention is provided with: a pedal arm (30) having an accelerator pedal; a resin housing (10) for supporting the pedal arm such that the pedal arm is swivelable about a prescribed axial line (S) between a rest position and a maximum stepping position; and a return spring (40) that applies a biasing force for returning the pedal arm to the rest position.
Jun NAGASHIMA, Satoshi MIYAZAKI, Takahiro URANO
Filed: 29 Feb 20
Utility
Intake Manifold and Outboard Motor
31 Mar 22
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
Fuel Supply Device of Engine
3 Mar 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
Rotary-type Valve Device
3 Feb 22
A rotary-type valve device is provided, and includes: a tubular valve having an inner passage Ip and opening parts opened in an outer circumferential wall and rotating about a predetermined axial line a shaft rotating integrally with the valve, a housing accommodating the valve, supporting the shaft to be able to turn, and defining a communication port causing the inner passage to communicate with outside; a passage member assembled in the housing such that that the passage member abuts on an outer circumferential wall of the valve and defining a radial-direction passage.
Yasuhiro TOCHIGI, Shoichi ISHIGUCHI
Filed: 11 Jun 21
Utility
Rotary-type Valve Device
3 Feb 22
A rotary-type valve device includes: a tubular valve having an inner passage and opening parts opened in an outer circumferential wall from the inner passage toward an outward side in a radial direction; a housing accommodating the valve and turnably supports the valve; a tubular passage member assembled in the housing such that the passage member abuts on the outer circumferential wall of the valve and defining a radial-direction passage; and a biasing spring biasing the passage member toward the outer circumferential wall The passage member includes an abutting member abutting on the outer circumferential wall, and an intervening member having an annular pressing part intervening between the abutting member and the biasing spring and partially pressurizing the abutting member.
Yasuhiro TOCHIGI, Shoichi ISHIGUCHI
Filed: 10 Jun 21
Utility
Pressure Sensor
20 Jan 22
A pressure sensor is provided and includes housings that are formed to have a tubular shape; a pressure measurement member that is accommodated inside the housing and includes a piezoelectric substance; a diaphragm that has a flexible plate-shaped part fixed to a tip side of the housings and a transfer part protruding on an axis to transfer a load to the pressure measurement member; and a heat shielding plate that is held by the housings such that the diaphragm is covered, comes into contact with the diaphragm in a central region corresponding to the transfer part, and defines an annular void between the heat shielding plate and the diaphragm in a region other than the central region.
Satoshi KANETA
Filed: 25 May 21
Utility
Accelerator Pedal Device
13 Jan 22
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
Valve Device
23 Dec 21
A valve device includes a body that defines a passage through which a fluid flows, a shaft that is movably supported with respect to the body and defines an axis, a valve element that is fixed to the shaft to open and close the passage; and a cylindrical bearing bush that movably supports the shaft with respect to the body, in which the bearing bush includes a mixed region in which a metal core material and expanded graphite are mixed with each other, and a first expanded graphite region made of only the expanded graphite such that the metal core material is not exposed in an inner circumferential side region in contact with an outer circumferential surface of the shaft.
Toshiaki ISHII, Makoto KOYAMA, Daisuke TAKAYAMA
Filed: 10 Mar 21
Utility
Pressure Detection Signal Processing Device, Engine Control System, and Program
4 Nov 21
The objective of the present invention is to remove drift of a piezoelectric element and thereby obtain a highly precise pressure detection signal by means of a simple configuration.
Satoru FUJISAKI, Katsuhiko FUKUI
Filed: 19 Nov 18
Utility
Throttle Device
4 Nov 21
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
Throttle Device
4 Nov 21
A throttle device 1 includes a throttle valve 2, and a throttle body 6 having a through hole 4 where the throttle valve 2 is arranged, the throttle body 6 including a connection part 28 to which a flow passage forming member 26 is finable, the flow passage forming member 26 communicating with the through hole 4 and forming an intake passage 3 with the through hole 4, and the connection part 28 having a contour 50 defined by a minor axis L1 along an axis direction of a rotatable shaft 12 of the throttle valve 2 and a major axis L2 which is longer than the minor axis L1.
Jun KIYONO, Naoki TANAKA
Filed: 1 Mar 21
Utility
Valve Device, Cooling Water Control Device, and Cooling Water Circuit
4 Nov 21
A valve device 1 includes a rotational shaft 2, and a valve body 4 internally forming a space 10 and rotatable about the rotational shaft 2, the valve body 4 having an outer circumferential surface 28 where a first communication hole 36 and a bottomed groove 38 are formed, the first communication hole 36 communicating with the space 10, the bottomed groove 38 extending from the first communication hole 36 toward one side in a rotational direction of the rotational shaft 2, and the groove 38 including a first section 40 in which at least one of a depth D of the groove 38 and a width W of the groove 38 increases toward the first communication hole 36.
Takuya KAWASAKI, Toshiaki FUJITANI
Filed: 1 Mar 21
Utility
Pressure Sensor
28 Oct 21
Provided is a pressure sensor capable of curbing the influence of heat and securing prescribed sensor precision.
Satoshi KANETA, Katsuhiko FUKUI
Filed: 10 Mar 21
Utility
Pressure Sensor
21 Oct 21
A pressure sensor of the present invention comprises a cylindrical housing (10, 210); a diaphragm (30) which is fixed to the front end of the housing and exposed to a pressure medium; a pressure measuring member (70, 270) comprising a first electrode (71), a piezoelectric element (72) and a second electrode (73) laminated in sequence inside the housing; a first conductor (91, 210) in a long shape which is electrically connected to the first electrode; a second conductor (92, 290) in a long shape which is electrically connected to the second electrode; and a restricting member (100, 300) having insulation which is arranged inside the housing so as to restrict relative movement between the first conductor and the second conductor According to this configuration, it is possible to suppress or prevent variations in parasitic capacitance so as to suppress or prevent the occurrence of noise.
Tomoya SATO, Katsuhiko FUKUI
Filed: 10 Jan 19
Utility
Reed Valve
7 Oct 21
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
Electronically Controlled Throttle Device for Engine
23 Sep 21
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