Otics Corporation

Naoyuki Yamane

Kimihiko Todo

Hideki Oka

Kiyoshi Masegi

Eiichi Nozaki

Hiroki Fujii

Tatsuya Sasaki

Haruyasu Tanaka

Yoshiaki Haga

Makoto Takaragi

A rocker arm includes a pair of sidewalls disposed along a heightwise direction so as to be opposed to each other. The sidewalls define a space to house a roller and have opposed portions extending in the heightwise direction relative to adjacent portions which are adjacent to the opposed portions. The opposed portions have thinner portions having smaller thicknesses than the adjacent portions.

Rocker arm and method of manufacturing the same

A bearing device includes a support having a bearing hole, a shaft member slidably inserted into the bearing hole thereby to be rotatably supported by the support, the shaft member having an axial end surface and a locking part located on the axial end surface of the shaft member to protrude in an axial direction of the shaft member from an outer periphery of the axial end surface of the shaft member. The locking part is deformed by force applied to its axial protruding end so as to bulge outward in a radial direction intersecting the axial direction, so that the bulging part is capable of being locked to a peripheral part of the bearing hole on an outer surface of the support.

Bearing device and method of manufacturing the same

Providing a rocker arm which can ensure the durability while reducing the inertial mass. The rocker arm () includes a valve abutment part () pressing a valve (). The valve abutment part () includes a receiving wall () abutting against an end surface of a stem end (A) of the valve () in a pressing state and a pair of sidewalls () protruding from both side ends (A) of the receiving wall () so as to be opposed to each other and disposed along and in proximity to a side peripheral surface of the stem end (A) of the valve (). At least protruding distal ends of the sidewalls () each have a smaller thickness than adjacent portions and serve as a thinner portion ().

Rocker arm and method of manufacturing the rocker arm

A rocker arm includes a roller, a support shaft coaxially mounted in the roller and having a first end portion and a second end portion, walls including at least a first wall and a second wall arranged along the rotation axis and opposite each other with having the roller therebetween, the first wall having a first through hole through which the first end portion is inserted and the second wall having a second through hole through which the second end portion is inserted, and plate portions including at least a first plate portion and a second plate portion arranged opposite each other with having the first wall, the second wall and the support shaft therebetween. The first plate portion is in contact with a first end surface of the first end portion and the second plate portion is in contact with a second end surface of the second end portion.

Rocker arm

An object is to provide a roller lifter which can maintain a proper dimensional accuracy of an outer diameter. A shaft () rotatably supporting a roller () is inserted through a pair of opposed portions () and swaged to be fixed. A cylindrical portion () is disposed to be fixed at a relative position to the opposed portions (). Upon rotation of a cam (), the cylindrical portion () is reciprocated via the roller (). The roller lifter () includes a first member () in which the shaft () is swaged to be fixed to the opposed portions () and a second member () separate from the first member () and couplable via a coupling member to the first member (). The second member () includes at least the cylindrical portion ().

Growing community of inventors

Nishio, Japan

Naoyuki Yamane