Patents Assigned to Meidensha Corporation
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Publication number: 20220205871Abstract: A duct body (101) of a blowing device provided in a chassis dynamometer includes a bottom wall (31), a top wall (32) and a pair of side walls (33) that form a flow passage having a rectangular cross section. In each of the side wall (33), a vertically elongated window part (42) is formed for enabling the passage of vehicle restraint member such as a chain (5). Each window part (42) is closed through the tiled arrangement of a few cover plates (53, 54), and a chain plate set (100). The chain plate set (100) is formed through the sandwiching of an elastic sheet member (61, 62) having a restraint member through hole (63) and a slit (64) between an inner plate (51) and an outer plate (52) each having an opening part (57, 58).Type: ApplicationFiled: January 8, 2020Publication date: June 30, 2022Applicant: MEIDENSHA CORPORATIONInventors: Toshimichi TAKAHASHI, Naoto YAMAGUCHI
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Publication number: 20220209682Abstract: A flying capacitor (FC)-type 3-level power conversion device turns on or off first to fourth semiconductor switching elements based on comparison between a flying capacitor voltage and a half of higher-voltage side filter capacitor voltage, comparison between the higher-voltage side filter capacitor voltage and the flying capacitor voltage plus a lower-voltage side filter capacitor voltage, comparison between the flying capacitor voltage and the lower-voltage side filter capacitor voltage, and comparison between the lower-voltage side filter capacitor voltage or the higher-voltage side filter capacitor voltage and a filter capacitor voltage command value, so that an electric current flows along a path including a filter reactor L and charging a flying capacitor so as to charge a lower-voltage side filter capacitor or a higher-voltage side filter capacitor to predetermined values.Type: ApplicationFiled: March 9, 2022Publication date: June 30, 2022Applicant: MEIDENSHA CORPORATIONInventors: Kazunobu OI, Kenji KOBORI
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Patent number: 11371912Abstract: A drive train bench system has two dynamometers that are connected in series to a specimen. The mechanical characteristics estimation method has: a first measurement step for measuring a response to a first excitation torque input signal when the first excitation torque input signal overlaps a first torque current command signal while a measurement control circuit controls the two dynamometers; a second measurement step for measuring a response to a second excitation torque input signal when the second excitation torque input signal overlaps a second torque current command signal while the measurement control circuit controls the two dynamometers; and a mechanical characteristics transfer function estimation step for using the results from the first and second measurement steps to estimate a mechanical characteristics transfer function.Type: GrantFiled: November 26, 2018Date of Patent: June 28, 2022Assignee: MEIDENSHA CORPORATIONInventor: Takao Akiyama
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Patent number: 11368068Abstract: The present invention provides a bearing pressure plate and a dynamo-electric machine using the bearing pressure plate which are capable of avoiding breakage of a bolt by dispersing a stress when a load due to vibrations etc. is applied. A bearing pressure plate 5 has an annular inner ring portion 11 abutting against an outer ring 3Ba of a rolling bearing 3 that supports a rotation shaft 4, an annular outer ring portion 12 located at a radial direction outer side of the inner ring portion 11 and having a plurality of bolt holes 12b through which the outer ring portion 12 is secured to a fixing portion side with a plurality of bolts 12a, and bridge portions 13 integrally connecting the inner ring portion 11 and the outer ring portion 12 at positions except the bolt holes 12b in a circumferential direction.Type: GrantFiled: October 8, 2019Date of Patent: June 21, 2022Assignee: MEIDENSHA CORPORATIONInventors: Akihumi Shimizu, Koji Nagata, Takashi Abe, Yoshiharu Naito
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Patent number: 11362568Abstract: Provided is a liquid cooling structure of a rotating electric machine, which is capable of suppressing the reduction of cooling efficiency even with a coil using a flat lead wire. Guide block walls 12Ac are provided on both sides in the width direction of a bobbin 12 along the axial direction of a stator 10 so as to position each between adjacent teeth portions 11b in the circumferential direction of a stator core 11 of the stator. A gap is formed between the coil 13 and the guide block wall 12Ac, and the guide block walls 12Ac are positioned adjacent to each other so as to make a closing between the guide block walls 12Ac of adjacent bobbins 12.Type: GrantFiled: June 20, 2019Date of Patent: June 14, 2022Assignee: MEIDENSHA CORPORATIONInventors: Tamotsu Sakai, Yuya Fujiwara
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Patent number: 11351506Abstract: A bubble generation device intermittently generates large bubbles in a liquid phase. The bubble generation device includes a bubble storing container, a pivot, and a pair of edge portion receivers. The bubble storing container stores bubbles generated by a gas supply nozzle in the liquid. The pivot allows the bubble storing container to pivot thereon, thereby releasing the large bubbles from the bubble storing container. The pair of edge portion receivers receives and blocks an edge portion of the bubble storing container to limit pivot of the bubble storing container. An inside of the bubble storing container is partitioned by a partition that is installed in an axial direction of the pivot.Type: GrantFiled: December 6, 2018Date of Patent: June 7, 2022Assignee: MEIDENSHA CORPORATIONInventors: Yin Qiang Roger, Hiroshi Noguchi, Terutake Niwa, Osamu Takase
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Patent number: 11342127Abstract: A vacuum-capacitor-type instrument voltage transformer (1) is equipped with a main capacitor (2) and an insulating tube (3) that accommodates the main capacitor (2). A voltage dividing capacitor (4) is connected to the main capacitor (2) in series. The main capacitor (2) is equipped with a plurality of vacuum capacitors (2a) to (2c) that are connected in series. A high-voltage-side electrode (6) is provided on a high-voltage side of the insulating tube (3), and a ground-side electrode (7) is provided on its low-voltage side. The high-voltage-side electrode (6) is equipped with a high-voltage shield (8). Electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2a)) disposed on the high-voltage side is set to be greater than electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2b)) disposed on the low-voltage side.Type: GrantFiled: October 16, 2018Date of Patent: May 24, 2022Assignee: MEIDENSHA CORPORATIONInventors: Osamu Takeya, Yoshiyuki Tanimizu, Toshimasa Fukai, Toshinori Tatsumi, Toru Tanimizu
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Publication number: 20220143823Abstract: Provided is a learning system 10 for an operation inference learning model 70 for controlling an automatic driving robot 4, the learning system 10 training the operation inference learning model 70 by reinforcement learning, and comprising the operation inference learning model 70, which infers operations of a vehicle 2 for making the vehicle 2 run in accordance with a defined command vehicle speed based on a running state of the vehicle 2 including a vehicle speed, and the automatic driving robot 4, which is installed in the vehicle 2 and which makes the vehicle 2 run based on the operations.Type: ApplicationFiled: December 25, 2019Publication date: May 12, 2022Applicant: Meidensha CorporationInventors: Kento Yoshida, Hironobu Fukai, Rinpei Mochizuki
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Patent number: 11313762Abstract: An input-side control device includes a first input signal generation unit for generating a first input signal on the basis of the deviation between an engine torque command signal and an input-side shaft torque detection signal; a second input signal generation unit for generating a second input signal on the basis of an input-side speed detection signal weighted according to a prescribed weighting signal; and a torque command signal generation unit for generating a torque command signal on the basis of the first and second input signals. If the value of a filtered signal obtained from the input-side speed detection signal is less than a prescribed threshold, the second input signal generation unit makes the value of the weighting signal lower than if the value of the filtered signal were greater than or equal to the threshold.Type: GrantFiled: December 13, 2019Date of Patent: April 26, 2022Assignee: MEIDENSHA CORPORATIONInventor: Takao Akiyama
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Patent number: 11306396Abstract: Disclosed is an oxide film forming device including a furnace body in which a workpiece is placed and a furnace cover. A mixed gas diffusion part is disposed on an inner side of the furnace cover via a shield plate. A mixed gas buffer space is provided in the mixed gas diffusion part. A shower head plate is disposed on the mixed gas diffusion part and opposed to the workpiece at a distance of 1 to 100 mm away from the workpiece. An ozone gas buffer space is provided in the furnace cover. A gas flow diffusion plate is disposed in the ozone gas buffer space. The shower head plate has formed therein first slits through which an ozone gas flows and second slits through which a mixed gas flows. The first slits and the second slits are alternately arranged side by side in a short-dimension direction of the slits.Type: GrantFiled: September 5, 2019Date of Patent: April 19, 2022Assignee: MEIDENSHA CORPORATIONInventors: Naoto Kameda, Toshinori Miura, Mitsuru Kekura
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Patent number: 11303168Abstract: A rotor for a rotary electric machine includes: a rotational shaft that is made of an iron-based metal, and includes a flange; a cylindrical rotor core that is made of a magnetic material, and includes a slot axially extending through the rotor core; a permanent magnet inserted in the slot; an annular first end plate that is made of a non-magnetic material, is shrink-fitted or press-fitted to the rotational shaft, and closes an opening of the slot; an annular fixing plate that is made of an iron-based metal, is shrink-fitted or press-fitted to the rotational shaft, and is disposed radially innerly with respect to the slot; an annular second end plate that is made of a non-magnetic material, includes a recession containing the fixing plate, and closes an opening of the slot; and a fixing tool coupling the second end plate to the fixing plate.Type: GrantFiled: September 11, 2019Date of Patent: April 12, 2022Assignee: MEIDENSHA CORPORATIONInventors: Tamotsu Sakai, Akihumi Shimizu
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Patent number: 11303220Abstract: A flying capacitor (FC)-type 3-level power conversion device turns on or off first to fourth semiconductor switching elements based on comparison between a flying capacitor voltage and a half of higher-voltage side filter capacitor voltage, comparison between the higher-voltage side filter capacitor voltage and the flying capacitor voltage plus a lower-voltage side filter capacitor voltage, comparison between the flying capacitor voltage and the lower-voltage side filter capacitor voltage, and comparison between the lower-voltage side filter capacitor voltage or the higher-voltage side filter capacitor voltage and a filter capacitor voltage command value, so that an electric current flows along a path including a filter reactor L and charging a flying capacitor so as to charge a lower-voltage side filter capacitor or a higher-voltage side filter capacitor to predetermined values.Type: GrantFiled: January 30, 2020Date of Patent: April 12, 2022Assignee: MEIDENSHA CORPORATIONInventors: Kazunobu Oi, Kenji Kobori
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Publication number: 20220108854Abstract: A vacuum interrupter (1) is equipped with a vacuum container (2) and a fixed electrode (3) and a movable electrode (4), which are provided in the vacuum container (2). The vacuum container (2) is constructed by hermetically joining a fixed-side end plate (6) to one end portion of an insulating tube (5) and by hermetically joining a movable-side end plate (7) to the other end portion of the insulating tube (5). The insulating tube (5) is equipped at its end portion with a projection portion (5a) that projects in an axial direction of the insulating tube (5) along an outer periphery of the insulating tube (5). The insulating tube (5) is equipped at its end portion with an end plate joining portion (5b) that projects from a base end portion of the projection portion (5a) in an inner peripheral direction of the insulating tube (5).Type: ApplicationFiled: February 6, 2019Publication date: April 7, 2022Applicants: MEIDENSHA CORPORATION, SECHERON SAInventors: Kenta YAMAMURA, Takaaki FURUHATA, Hideki KOMATSU, Kosuke HASEGAWA, Tetsuya KANNO, Bjorn FISCHER, Tarek LAMARA, Claudio TRICARICO
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Publication number: 20220090988Abstract: A transmission actuator unit (131) is fixed on a actuator support plate (105) of a connection box unit (101) through a pair of lock mechanisms (143). A pair of grommets (121), with which lock pins (144) are engaged, are provided at both of a front side and a rear side of the actuator support plate (105). Then, the transmission actuator unit (131) can be selectively mounted on the actuator support plate (105) in either of two attitudes that are reversed 180 degrees according to vehicle types. Since a base plate of the transmission actuator unit (131) is mounted on the actuator support plate (105) settled in a horizontal attitude, rigidity of support of the transmission actuator unit (131) and the actuator support plate (105) is high.Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Publication number: 20220090986Abstract: A pedal actuator (41) of an automatic vehicle driving device (1) is supported by a pedal actuator support (51) by mounting a pedal actuator support bracket (61) to the pedal actuator support (51) and fixing the pedal actuator support bracket (61) with a lock pin (67). In the automatic vehicle driving device (1), when mounting the pedal actuator support bracket (61) to the pedal actuator support (51), by connection between a support-side connector (53) and a bracket-side connector (63), electrical connection between the pedal actuator support (51) and the pedal actuator support bracket (61) is also completed.Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Publication number: 20220090987Abstract: An L-shaped bracket (151) is fixed to a top end portion of a rack shaft (141) of a selecting actuator (133) of a transmission actuator unit (131) through a rotatable joint (152). An actuator housing (161) of a shifting actuator (134) is supported on a mounting surface (151a) of the L-shaped bracket (151) so as to be attachable to and detachable from the mounting surface (151a) through a lock mechanism (154) (a lock pin (155) and a lock hole (162a)). The shifting actuator (134) can be mounted with the shifting actuator (134) being reversed 180 degrees.Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Publication number: 20220088769Abstract: A transmission actuator unit (131) configured by combination of a selecting actuator (133) and a shifting actuator (134) is mounted on an upper surface of a connection box unit (101). A connection box frame (102) is slidably supported along guide rails (20) between a pair of main beams (15a) of a slanting frame (11). By sliding the connection box unit (101), it is possible to adjust a height position of the transmission actuator unit (131) to a height position of a shift lever.Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Publication number: 20220089101Abstract: An automatic vehicle driving device (1) including a transmission actuator unit (131) and pedal actuators (41) is supported as a whole by a frame (11) and legs (12). The frame (11) extends obliquely downward from a seat back abutting part (22) located at an upper end of the frame (11) toward a vehicle front side. The frame (11) is provided with the pair of legs (12) at a top end of the frame (11). The legs (12) extend downward along a front end of a seat cushion (3) and abut against the vehicle body floor (6). By tightening a belt (25) between the frame (11) and a seat support (27), the frame (11) is pulled obliquely downward and is firmly fixed. Since a flexible seat cushion (3) does not bear a load of the device (1), vibrations of the device (1) during a running test do not easily occur.Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Publication number: 20220090656Abstract: A pedal actuator support bracket (61C) is provided at a front end portion of a frame (11) supported at a driver's seat of a vehicle. An actuator housing (78) is provided so that a base end side of the actuator housing (78) is supported by the pedal actuator support bracket (61C) so as to be able to pivot upward and downward relative to the pedal actuator support bracket (61C). A rack shaft (80) protrudes from a top end side of the actuator housing (78) and moves forward and backward along a longitudinal direction of the actuator housing (78). A pivotal plate (87) is connected to a top end of the rack shaft (80) so as to be able to pivot upward and downward and placed on a pressing surface of a clutch pedal (47) so as to overlap this pressing surface and fixed to the clutch pedal (47).Type: ApplicationFiled: March 19, 2020Publication date: March 24, 2022Applicant: MEIDENSHA CORPORATIONInventors: Akihiko KODAMA, Nobuo OKAZAKI
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Patent number: D951300Type: GrantFiled: March 16, 2020Date of Patent: May 10, 2022Assignee: MEIDENSHA CORPORATIONInventors: Yoshiharu Naito, Takahiko Oishi, Yohei Takahashi