JTEKT Corporation

Nara-shi, Japan

JTEKT Corporation

Nara-shi, Japan
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A communication system includes: an information acquisition unit that acquires node information, which indicates the presence or absence of the execution of a reissuing process by communication processing nodes, for a plurality of switching processes in the case where a switching process has been executed once each for all of communication lines; and a system information generation unit that generates system information, which indicates the system of a communication network, on the basis of a plurality of pieces of node information that have been acquired.


Patent
Jtekt Corporation | Date: 2016-11-11

A plurality of production facilities and an analysis apparatus are connected through a fog network. The analysis apparatus performs a data analysis based on detection information of detectors acquired through the fog network and stores determination information relating to an abnormality of each of the plurality of production facilities or an abnormality of a production object as a result of the data analysis. Each of the plurality of production facilities determines an abnormality of the each of the plurality of production facilities or an abnormality of the production object based on the determination information stored in the analysis apparatus.


Patent
Jtekt Corporation | Date: 2016-11-09

A rolling bearing includes an inner ring, an outer ring, a plurality of balls, and a cage that holds the balls. An annular groove for creep suppression is formed in a fitting surface that is fitted on a housing to which an outer ring is attached. The annular groove has a groove bottom portion and a pair of tapered surface portions extending from opposite sides of the groove bottom portion in an axial direction and defining a groove width that is larger toward the fitting surface. In a section including a bearing center line, each of the tapered surface portions has a linear sectional shape inclined to the fitting surface.


Patent
Jtekt Corporation | Date: 2016-11-09

A rolling bearing includes an inner ring, an outer ring, a plurality of balls, and a cage that holds the balls. An annular groove for creep suppression is formed in a fitting surface that is fitted on a housing to which an outer ring is attached. The annular groove has a depth at which a groove bottom portion of the annular groove is precluded from coming into contact with the mating member when a static load rating is imposed on the annular groove in a radial direction.


Patent
JTEKT Corporation | Date: 2017-05-17

A rack bushing supported by an annular elastic member (40) in a housing (20) includes a bushing body (50) and a flange portion (60) extending outward in a radial direction from a first axial end of the rack bushing. The flange portion is positioned at a step portion (23) of an inner periphery of the housing. The bushing body includes a second axial slit (32) extending from a second axial end to a middle portion in an axial direction. A gap that communicates with the second axial slit is formed between the inner periphery of the housing and an outer surface of the bushing body. A recessed groove (61) or communication passage of the flange portion allows a first space, disposed on a housing-end side with respect to the rack bushing in the housing, to communicate with the gap.


The present invention relates to a method of evaluating the frictions in an assisted steering mechanism (1), said method comprising a step (a) of acquiring a series of characterization points, in the course of which are measured, for several different values taken successively by the assistance load in the course of the operation of the steering mechanism, the corresponding values of friction, so as to empirically obtain a series of distinct characterization points (P1, P2, Pn) which each associate a measured value of friction (Fmes_1, Fmes_2, Fmes_n), with a measured value representative of the assistance load (Caction_1, Caction_2 Caction_n), then a step (b) of constructing an empirical friction model, in the course of which a law of correlation (L) between the constituent characterization points (P1, P2, Pn) of the series of characterization points is established on the basis of the scatter of points formed by said series of said characterization points.


Patent
JTEKT Corporation | Date: 2017-01-18

A rotor (1) includes a rotor core (10) having magnet holes (13) that open to both sides in an axial direction, and magnets (30) placed in the magnet holes (13). A method for manufacturing the rotor (1) includes: the placing step (S42) of placing a material of the magnets (30) containing at least magnetic particles (31) in the magnet holes (13); and the forming step (S43) of forming compacts by compressing the material of the magnets (30) in the magnet holes (13) in the axial direction of the rotor (1) with punch members (54, 55) by using the rotor core (10) as a part of a forming die.


Patent
JTEKT Corporation | Date: 2017-03-08

An interior permanent magnet rotor restrains demagnetization of permanent magnets embedded in a core 12. Each permanent magnet is formed by joining a first portion 16a and a second portion 16b at a connection CS. The first and second portions 16a, 16b extend from the outer side toward the inner side in the radial direction of the core 12. The outer end faces ES of the first and second portions 16a, 16b in the radial direction of the core 12 extend in an orientation direction MO as viewed in section perpendicular to the axial direction Da. The outside diameter of the core 12 gradually increases from the boundaries BL between a single magnetic pole and magnetic poles adjoining the single magnetic pole toward the middle of the single magnetic pole in the circumferential direction of the core 12.


Patent
JTEKT Corporation | Date: 2017-01-18

A power generation device includes: a one-way clutch which is provided between an output shaft of a speed increaser and a drive shaft of a power generator, and which restricts relative rotation of the output shaft and the drive shaft in one direction and permits relative rotation thereof in another direction; and a plurality of elastic coupling members which are provided between the output shaft and the drive shaft, which are spaced in an axial direction, and which absorb misalignment between the output shaft and the drive shaft. The one-way clutch is disposed in a position axially outside an area between the plurality of elastic coupling members.


Patent
JTEKT Corporation | Date: 2017-03-01

A driving force transmission device (12) includes: a clutch unit (100) that connects and disconnects input (104) and output (26) shafts to and from each other; an annular electromagnet disposed so that it can rotate relative to a shaft body portion included in the input shaft; a rotor that faces one side in the axial direction of the electromagnet; an armature that faces one side in the axial direction of the rotor, that is disposed so that it can move in the axial direction, and that moves in the axial direction to engage and disengage the clutch unit; an internally threaded portion (48) that is formed on the inner periphery of the rotor and engages with an externally threaded portion formed on the outer periphery of the shaft body portion; and a second elastic member that elastically presses the rotor screw-fitted on the outer periphery of the shaft body portion toward the electromagnet.

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