Jtekt Corporation

Toyota Jidosha Kabushiki Kaisha

Toyoda Koki Kabushiki Kaisha

Daiwa Plastics Co., Ltd.

Hiroyuki Yao

Eiji Tanaka

Susumu Imagaki

Shigeru Hoshino

Takeshi Matsuda

Toshiyuki Saito

Koji Nishi

Takumi Mio

Hajime Fukami

Kentaro Yamauchi

Kenji Imamura

Hidetoshi Fujiwara

Yuji Okamoto

Shunsuke Nunomura

Atsushi Eto

Kentaro Okuno

Yoshito Fujita

Masayuki Yamamoto

Hideki Yamazaki

Eiji Hayashi

A pin assembly includes: a resin pin; and a collar fitted to a round shaft portion of the resin pin and having higher hardness than the resin pin. The round shaft portion is sheared to cancel connection between a first plate and a second plate upon secondary collision of a vehicle. The collar includes an end face received by a reception surface of the second plate, and shears the round shaft portion in a shear plane along the end face upon the secondary collision. The round shaft portion includes a hollow hole. An inner circumference of the hollow hole includes a straight portion which has a generating line parallel to an axial direction of the round shaft portion and which is traversed by a plane including the end face of the collar.

Pin assembly and steering device

Column moving direction is referred to as first direction, opposite direction to the first direction is referred to as second direction, and direction which is orthogonal to the first direction is referred to as third direction. First suspending bolt is in contact with cylindrical surface which is formed by end portion of first elongated slot in second direction to thereby be positioned in relation to the second direction and the third direction. Second suspending bolt is positioned only in relation to the second direction by inner surface of end portion of second elongated slot in the second direction. Positions of portions of the end portions of the elongated slots which are situated farthest in the second direction are made equal to each other with respect to the second direction, and both the suspending bolts are aligned in position with respect to the first direction.

Steering device

A steering column device is provided with a pair of suspension shafts which connects a first plate of a fixed bracket and a second plate of a movable bracket, thereby suspending a movable jacket through the movable bracket. A pair of first holes, each of which is an elongated hole, into which the pair of suspension shafts is inserted, is formed in the first plate. A connection and separation mechanism which separates, at the time of a secondary collision, the second plate from a predetermined position of the first plate in a column movement direction includes a resin pin disposed only between the pair of first holes in relation to a direction orthogonal to the column movement direction.

Steering-column device

A steering device includes a fixed bracket which includes a first plate, a movable jacket which rotatably supports a steering shaft, a movable bracket which includes a second plate, a suspension mechanism and a resin pin. The suspension mechanism includes a suspension shaft connecting the first plate and the second plate, and is configured to move in a column movement direction along with the second plate at the time of the secondary collision. The resin pin is inserted into a first hole provided in the first plate and a second hole provided in the second plate, and is configured to be broken at the time of the secondary collision. The resin pin has a predetermined amount of play in a direction orthogonal to the column movement direction with respect to at least one of the first hole and the second hole.

A steering column device is provided with a suspension mechanism which is supported on a fixed bracket, suspends a movable jacket through a movable bracket, and can move in a column movement direction at the time of a secondary collision. The suspension mechanism includes a suspension bolt which is inserted into a first plate of the fixed bracket and a second plate of a tilt bracket and is screwed into a nut. A leaf spring which is interposed between a head portion of the suspension bolt and the second plate in a state of bringing a stepped portion of the suspension bolt into contact with the second plate biases the first plate to the second plate side. Further, the second plate is pinched between the stepped portion and the nut.

In a steering system, a first through-hole is formed in a stationary bracket secured to vehicle body. A second through-hole is formed in a movable bracket that is movable relative to the stationary bracket in a prescribed direction at the time of a secondary collision. A pin passed through both the first through-hole and the second through-hole breaks at a position between the first through-hole and the second through-hole at the time of the secondary collision, thereby allowing the movable bracket to move relative to the stationary bracket. An under plate attached to the movable bracket closes the second through-hole from below.

Steering system

An iron-base sintered part having high density and totally enhanced strength, toughness and abrasion resistance, a manufacturing method of the iron-base sintered part, and an actuator are disclosed. The iron-base sintered part is formed by an iron-nickel-molybdenum-carbon-based sintered alloy, has density of 7.25 g/cmor more, and has a carburization quenched structure. A method for manufacturing the iron-base sintered part includes a molding process of charging a raw mixture powder of an iron-nickel-molybdenum-based metal powder and a carbon-based powder into a cavity of a molding die and compressing the raw powder in the cavity to form a consolidation body, a sintering process of sintering the consolidation body at a sintering temperature to form a sintered alloy, and a carburization quenching process of heating the sintered alloy in a carburization atmosphere and quenching the heated alloy.

Iron-base sintered part, manufacturing method of iron-base sintered part and actuator

A metal part in which a base material of silicon-aluminum alloy having 1 to 25% by mass of silicon as an anode is immersed in an electrolyte together with a cathode, and at least a portion of a surface of the base material is anodized and coated with an anodic oxide film. A current density provided to both the anode and the cathode is increased from an initial current density of 0 A/dmat a rate between 0.15 and 0.35 A/dmper minute, wherein once the current density reaches a prescribed current density of between 0.8 A/dmand 1.2 A/dm, the current density provided to the anode and the cathode is maintained at the prescribed current density.

Metal part and method of manufacturing metal part

Within an angular area where each vane of a vane pump having backpressure grooves is moved radially inwardly as the rotor rotates, the outer circumferential edge of the backpressure groove is indented toward the rotational axis of the rotor along a locus drawn by the radial innermost end of each vane so that the radial innermost end of each vane does not protrude radially inwardly beyond a predetermined distance from the indented part of the outer circumferential edge of the backpressure groove.

Vane pump

A vehicle door structure having an exterior surface of a glass window located in a vehicle door. A door window is vertically displaceable in conjunction with a slider. The slider has a vertically extending groove into which an end portion of the door window is fitted. An adhesive is provided between the end portion of the door window and the inside of the slider to fix the door window in the groove of the slider. The upper portion of the slider closes the space in which the adhesive is filled so that the adhesive does not spread out on the upper surface of the slider, thereby preventing accumulation of foreign matter such as dust and dirt, and adding to the aesthetic appearance of the assembly.

Growing community of inventors

Okazaki, Japan

Hiroyuki Yao