A radial-type magnetic encoder includes: an annular fixing member; and an annular plastic magnet attached to the annular fixing member. The annular fixing member includes the cylindrical portion, an outward flange portion extending outward in a radial direction from an edge of the cylindrical portion, and a sensor opposed portion bent from an edge of the outward flange portion and opposed to a magnetic sensor which detects rotation of the magnetic encoder, and the annular fixing member has a substantially U-shaped sectional shape along a plane including the radial direction and an axial direction. The annular plastic magnet has a shape that covers a front surface, a back surface, and an end edge of the sensor opposed portion, and an outer-diameter-side part of the outward flange portion.

Products and methods are provided for controlling thermal expansion. In various exemplary embodiments, a structure includes a body constructed of a material exhibiting a first coefficient of linear thermal expansion. A component is disposed inside the body and exhibits a second coefficient of linear thermal expansion that is lower than the first coefficient of linear thermal expansion. A layer is wrapped around the body and constrains thermal expansion of the body. The layer includes a composite containing fibers that are aligned with one another to constrain expansion in a desired direction or in multiple directions. The layer is independently useful to provide a retention function for the body.

The protective cover having a cup shape is mounted to an outer ring of a bearing so as to seal an inward-side end portion of the bearing. A protective cover includes: a disc part made of a synthetic resin; and a sensor holder part that is made of the synthetic resin and protrudes inward from the disc part. The disc part is provided with a separation wall which separates the magnetic encoder and the magnetic sensor from each other. The separation wall has a surface facing the magnetic encoder and a surface facing the magnetic sensor, and one of the surfaces has a mark of a gas drainage pin of an injection molding die.

This ball joint is provided with: a ball stud, one end being fastened to a suspension device/stabilizer, and the other end having a ball part; a housing that rotatably supports the ball part of the ball stud; and a ball seat provided so as to be interposed between the housing and the ball part, the ball seat having an inner spherical part for accommodating the ball part. The ball seat is provided to the housing by insert injection molding. The inside diameter dimension of the inner spherical part formed by separate injection molding is set to a dimension corresponding to the anticipated amount of molding shrinkage of the resin during the insert injection molding.

The resin injection gate is disposed at the pillar part. When the bearing cage is divided into first and second regions by an imaginary line connecting the resin injection gate and a weld to be formed at a position radially facing the resin injection gate, a resin reservoir that can store therein the melted resin is formed at the pillar part in only one of the regions. A circumferential distance between the resin reservoir and the weld is smaller than a circumferential distance between the resin reservoir and the resin injection gate. A cross-sectional area of a communicating part of the resin reservoir, which is configured to communicate with the pillar part, is equal to or less than a quarter of a cross-sectional area of the resin injection gate.

A resin reservoir capable of storing the melted resin is provided in the pillar radially facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among a plurality of the pillars not provided with the resin injection gate or the pillar in the vicinity of the pillar facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among the plurality of the pillars not provided with the resin injection gate. A cross-sectional area of a communicating portion of the resin reservoir which communicates with the pillar is smaller than the smallest of cross-sectional areas of a plurality of the resin injection gates.

Products and methods are provided for controlling thermal expansion. In various exemplary embodiments, a structure includes a body constructed of a material exhibiting a first coefficient of linear thermal expansion. A component is disposed inside the body and exhibits a second coefficient of linear thermal expansion that is lower than the first coefficient of linear thermal expansion. A layer is wrapped around the body and constrains thermal expansion of the body. The layer includes a composite containing fibers that are aligned with one another to constrain expansion in a desired direction or in multiple directions. The layer is independently useful to provide a retention function for the body.

A method for producing a composite material molded article includes a process of, from a solution in which reinforcing fibers with an average fiber length of 0.5 mm or more and thermosetting resin are dispersed and mixed in a solvent, removing the solvent by paper-making to form a preform, and a process of press molding the obtained preform using a mold set at a temperature equal to or higher than a curing temperature of the thermosetting resin to form the composite material molded article.

The present disclosure relates to a check rail for a rail suspension in a vehicle. The check rail may include a check rail body, and a ball-and-socket joint pan formed in the check rail body, wherein the ball-and-socket joint pan may include a circumferential inner wall and a receiving opening, with a ball-and-socket joint pin with an articulated ball in the ball-and-socket joint pan, and with a plastic injection layer configured to embed the articulated ball in the ball-and-socket joint pan between the circumferential inner wall of the ball-and-socket joint pan and the articulated ball.

The invention provides a building block for a mechanical construction. The invention further provides a bearing and a method of producing the building block. The building block provides a first printed material printed via an additive manufacturing process on or at least partially embedded in a second material. The first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor. The sensor may be a magnetic sensor or an optical sensor. The first printed material may include magnetic particles. The method of producing the building block may include a step of adding the first printed material to the second material via the additive manufacturing process under the influence of a predefined magnetic field.