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公开(公告)号：US10598569B2
公开(公告)日：2020-03-24
申请号：US15309999
申请日：2015-05-07
Applicant: KOBE STEEL, LTD.
Inventor： Toru Okada
Abstract: An applied load acting on a tire is varied by alternately moving a load drum in a direction of approaching and leaving the tire. A phase difference between a variation of a position of the load drum and a variation of the applied load is calculated. A tire having an abnormality in rolling resistance is sorted out based on the calculated phase difference.
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公开(公告)号：US09952121B2
公开(公告)日：2018-04-24
申请号：US14782226
申请日：2014-03-05
Applicant: KOBE STEEL, LTD.
Inventor： Toru Okada
CPC classification number: G01M17/02 , B60S5/046 , G05D16/2013
Abstract: A pneumatic circuit of a tire testing apparatus includes: a piping configured to guiding air from an air supply source to a tire; a control part configured to output a target command pressure; a pressure proportional control valve part; and a constant-flow air discharge part. The pressure proportional control valve part supplies and discharges the air of a flow rate proportional to a differential pressure between the target command pressure and an internal pressure of the tire so that the internal pressure of the tire becomes the target command pressure, and has a dead band in which the air is not supplied and discharged within a predetermined range. The constant-flow air discharge part is formed between the tire and the pressure proportional control valve part, and is configured to discharge the air of an inside of the piping to an outside at a constant flow rate.
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公开(公告)号：US09868227B2
公开(公告)日：2018-01-16
申请号：US15035978
申请日：2014-12-09
Applicant: Kobe Steel, Ltd.
Inventor： Toru Okada , Yusuke Tanaka
CPC classification number: B29B7/283 , B01F15/00201 , B29B7/18 , B29B7/183 , B29B7/246 , B29B7/263 , B29C47/0801 , B29C47/0803 , G01L5/12 , G01L25/00
Abstract: The relative displacement in the axial direction between an outer ring fixing member or casing and an inner ring fixing member or rotor is determined, said outer ring fixing member being a member for affixing an outer ring of a bearing on one side, and said inner ring fixing member being a member for affixing an inner ring of the bearing on the one end side. When calculating a thrust load acting on the rotor by multiplying the determined relative displacement by a conversion coefficient, an axial force measuring bolt is used as a tightening bolt for affixing the bearing on the one end side, said axial force measuring bolt enabling measurement of a load acting in the axial direction. The axial force measured by the axial force measuring bolt and the relative displacement during measurement of the axial force are used to calibrate the conversion coefficient.
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公开(公告)号：US11268594B2
公开(公告)日：2022-03-08
申请号：US16755735
申请日：2018-10-04
Applicant: KOBE STEEL, LTD.
Inventor： Toru Okada , Kazuo Yamaguchi , Keita Kanai
Abstract: Provided is a reduction gear comprising a bearing state detection device capable of detecting the state of a rolling bearing that rotates integrally with an output shaft and an output gear during power transmission. The bearing state detection device comprises: a plurality of displacement sensors (1, 2, 11, 12), which are disposed in mutually differing positions at the sides of output gears (26, 27) having helical threads (35a, 37a) formed in the outer peripheral surfaces, and which detect the amount of axial displacement of the side surfaces of the output gears; and a processing unit (5), which determines the amount of tilt of the gears (26, 27) on the basis of the amount of displacement detected by the plurality of displacement sensors (1, 2, 11, 12) during rotation of the output gears (26, 27) when the output gears are linked to an output shaft (25) by a linking mechanism (32).
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公开(公告)号：US10371602B2
公开(公告)日：2019-08-06
申请号：US15548889
申请日：2016-01-15
Applicant: KOBE STEEL, LTD.
Inventor： Toru Okada
IPC: G01M17/02
Abstract: A rim for tire testing includes a rim body that is rotatably provided in a tire testing device so that a tire to be tested can be attached to the rim body, and a filling unit that can fill the tire to be attached to the rim body with a gas at a predetermined pressure. The rim body can be divided into a plurality of members in a direction along a rotational axis of the rim body. Of the rim body divided into the plurality of members, a rim base portion to be contact with a tire bead portion of the tire is integrated with the other divided members than the rim base portion by use of a coupling member.
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Patent Agency Ranking
公开(公告)号：US09880073B2
公开(公告)日：2018-01-30
申请号：US14787672
申请日：2014-05-13
Applicant: Kobe Steel, Ltd.
Inventor： Toru Okada
CPC classification number: G01M17/022
Abstract: A tire traveling test device has a belt that horizontally spans between two drums and a load support device that supports a flat surface of the belt from a lower surface side of the belt. The load support device is provided with a liquid supply means that supplies support liquid between the load support device and the belt and supports the belt from below. The liquid supply means is provided with a plurality of supply holes from which support liquid can be discharged between the load support device and the belt. Additionally, the liquid supply means can adjust the flow rate of the support liquid discharged from the supply holes on the basis of the fluid pressure, which changes according to the tire contact state.
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公开(公告)号：US11668394B2
公开(公告)日：2023-06-06
申请号：US17838859
申请日：2022-06-13
Applicant: KOBE STEEL, LTD.
Inventor： Shunsuke Morinaka , Toru Okada , Tomohiro Otsuka
CPC classification number: F16J1/08 , F04B39/0292 , F16J1/09 , F16J1/005
Abstract: In a piston including a plurality of piston rings, a state where a difference in differential pressure between the piston rings is eased is maintained even after passage of time, and the life of the piston rings is extended. A piston includes a piston body in which a plurality of ring grooves is formed, and a plurality of piston rings respectively arranged in the ring grooves. In the piston, a leakage groove is formed on a low-pressure side surface of the ring groove, and in a state where the piston ring is abutted with the low-pressure side surface while being abutted with a cylinder, the leakage groove ensures communication between a high-pressure side space and a low-pressure side space with respect to the piston ring.
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公开(公告)号：US10222300B2
公开(公告)日：2019-03-05
申请号：US14434941
申请日：2013-11-08
Applicant: Kobe Steel, Ltd.
Inventor： Toru Okada , Shogo Sarumaru
IPC: G01M17/02
Abstract: A uniformity waveform for a tire (T) and a rotational phase of a load drum (4) are measured with a load drum (4) pressed against the tire (T). In a waveform of the frequency domain acquired by frequency conversion of the uniformity waveform, the amplitude and phase for a component of an integer multiple of the rotational frequency of the load drum (4) are found and stored as a correction parameter. A corrected tire (T) uniformity waveform is calculated by subtracting from the uniformity waveform a correction waveform calculated on the basis of the correction parameter, the correction waveform being the one in the rotational phase range of the load drum (4) during tire measurement.
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9.发明授权公开(公告)号：US09791344B2
公开(公告)日：2017-10-17
申请号：US14397246
申请日：2013-06-12
Applicant: Kobe Steel, Ltd.
Inventor： Toru Okada , Takayuki Fukuda , Takashi Sumitani
CPC classification number: G01L25/00 , G01M17/02 , G01M17/022
Abstract: The calibration method for a multi-component force detector is a calibration method for a multi-component force detector provided in a rolling resistance testing machine comprising a spindle to which a tire is mounted, and a traveling drum having a simulated traveling road surface against which the tire is pressed, wherein when processing for calculating force acting on the tire from the measurement value of the multi-component force detector using a crosstalk correction factor for correcting the influence of crosstalk occurring in the multi-component force detector is performed, a test is conducted using at least one or more reference tire the rolling resistance value of which is already known, and the crosstalk correction factor is calibrated using “rolling test data” composed of force measured by the multi-component force detector during the test using the reference tire, and the rolling resistance value of the reference tire used for the measurement.
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公开(公告)号：US20150260613A1
公开(公告)日：2015-09-17
申请号：US14434941
申请日：2013-11-08
Inventor： Toru Okada , Shogo Sarumaru
IPC: G01M17/02
CPC classification number: G01M17/022 , G01M17/024
Abstract: A uniformity waveform for a tire (T) and a rotational phase of a load drum (4) are measured with a load drum (4) pressed against the tire (T). In a waveform of the frequency domain acquired by frequency conversion of the uniformity waveform, the amplitude and phase for a component of an integer multiple of the rotational frequency of the load drum (4) are found and stored as a correction parameter. A corrected tire (T) uniformity waveform is calculated by subtracting from the uniformity waveform a correction waveform calculated on the basis of the correction parameter, the correction waveform being the one in the rotational phase range of the load drum (4) during tire measurement.
Abstract translation: 使用压载在轮胎（T）上的载重鼓（4）测量轮胎（T）的均匀性波形和载重鼓（4）的旋转相位。 在通过均匀波形的频率转换获得的频域的波形中，找到负载鼓（4）的旋转频率的整数倍的分量的振幅和相位并将其存储为校正参数。 通过从均匀度波形中减去在轮胎测量期间基于校正参数计算出的校正波形，校正波形是负载滚筒（4）的旋转相位范围中的校正波形来计算校正轮胎（T）均匀性波形。
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