Abstract: A bearing structure includes: a rotation member including a plurality of extended portions extending radially outward from a shaft portion and arranged separated away from each other in an axial direction of the shaft portion; and a bearing member in which a counterface surface facing one of the plurality of extended portions in the axial direction is included in one or a plurality of main bodies.

Abstract: A variable flow rate valve mechanism includes a valve including a valve body and a valve shaft projecting from the valve body, a lock member fixed to the valve shaft at a position axially spaced from the valve body, an attachment member disposed between the valve body and the lock member and holding the valve together with the lock member, and a spring washer disposed between the lock member and the attachment member or between the attachment member and the valve body, and contacting the lock member or the valve body and the attachment member to impart an elastic force to the attachment member. A first member or a second member has an inner face, the inner face facing radially inward and facing an outer peripheral portion of the spring washer.

Abstract: A bearing structure includes: a rotation member including a plurality of extended portions extending radially outward from a shaft portion and arranged separated away from each other in an axial direction of the shaft portion; and a bearing member in which a counterface surface facing one of the plurality of extended portions in the axial direction is included in one or a plurality of main bodies.

Abstract: A variable flow rate valve mechanism includes a valve including a valve body and a valve shaft projecting from the valve body, a lock member fixed to the valve shaft at a position axially spaced from the valve body, an attachment member disposed between the valve body and the lock member and holding the valve together with the lock member, and a spring washer disposed between the lock member and the attachment member or between the attachment member and the valve body, and contacting the lock member or the valve body and the attachment member to impart an elastic force to the attachment member. A first member or a second member has an inner face, the inner face facing radially inward and facing an outer peripheral portion of the spring washer.

Abstract: A variable flowrate valve mechanism includes: a valve body that opens and closes the opening portion; a stem of which one end is connected to the valve body and is supported so as to be rotatable relative to a housing; an operating rod that is connected to an actuator and reciprocates; a link member of which one end is connected to the stem and the other end is connected to the operating rod and which extends in a direction crossing the stem and the operating rod; and a biasing member that is connected to a pair of connecting units disposed on both sides of the link member in a direction where the operating rod reciprocates, is bent so as to protrude outward in a longitudinal direction of the link member, and presses the link member in the longitudinal direction of the link member.

Abstract: A valve is provided fitted into a mounting hole of a mounting member. The valve is allowed to have play with respect to the mounting member. The valve includes a valve body having a valve surface capable of being brought into contact with and being separated from a valve seat. A valve shaft is integrally formed on a head of the valve body. An axial center of the bypass passage is inclined with respect to a thickness direction of an inner wall portion of a turbine housing so that an opening portion on an outlet side in the bypass passage is located closer to a stem side than an opening portion on an inlet side. A center of the valve surface of the valve body is eccentric to the stem side with respect to an axial center of the valve shaft.

Abstract: Provided is a diaphragm type actuator that drives an operation rod in an axial direction of the operation rod, including: a diaphragm which is connected to the operation rod; a low pressure chamber which is adjacent to one end side of the diaphragm in the axial direction; a high pressure chamber which is adjacent to the other end side of the diaphragm in the axial direction; a return spring which is provided in the low pressure chamber and urges the diaphragm toward the high pressure chamber; and a retainer which is provided on a surface near the high pressure chamber in the diaphragm. An elastic member is disposed inside the high pressure chamber and the elastic member is disposed between a retainer and a wall surface facing the retainer in the axial direction.

Abstract: A connecting pin is integrally provided at a distal end portion of an actuating rod of an actuator, a pin hole for allowing insertion of the connecting pin is penetrated and formed at a distal end portion of the link member, an annular wave spring for biasing the connecting pin to a center side of the pin hole is provided inside the pin hole of the link member, the wave spring is fitted into a circumferential groove of the connecting pin and alternately has a plurality of convex portions and a plurality of concave portions along its circumferential direction, each of the convex portions of the wave spring is brought into pressure contact with an inner circumferential surface of the pin hole, and each of the concave portions of the wave spring is brought into pressure contact with a bottom surface of the circumferential groove of the connecting pin.

Abstract: Provided is a diaphragm type actuator which drives an operation rod in an axial direction, including: a diaphragm which is connected to the operation rod; a high pressure chamber which is adjacent to one end side of the diaphragm in the axial direction; a low pressure chamber which is adjacent to the other end side of the diaphragm in the axial direction; and a return spring which is provided in the low pressure chamber and urges the diaphragm toward the high pressure chamber. Since an absorption portion is disposed inside the high pressure chamber, a force acting on the diaphragm is absorbed when the diaphragm moves toward the high pressure chamber and stops therein.

Abstract: In a variable-flow-rate valve mechanism, a valve is fitted into an attachment hole of an attachment member. The valve allows for play with the attachment member, and includes a valve body provided with a valve surface. A valve shaft is integrally formed in the center of a head portion of the valve body. A stopping member is provided to a leading end portion of the valve shaft. A leaf spring is provided to the valve shaft. The leaf spring includes a folded-back portion formed by bending. An insertion hole is formed in one end portion of the leaf spring. A cutout portion is formed in another end portion of the leaf spring. The one end portion of the leaf spring is fixed to the attachment member and the other end portion of the leaf spring is pressed to the head portion of the valve body.

Abstract: A variable flow rate valve mechanism of the present disclosure includes a stem which is rotatably supported by a housing, a bearing which is inserted through a through-hole of the housing and supports the stem to be rotatable about an axis of the stem, and a valve portion which is provided at one end side of the stem and covers an opening. The stem is disposed so that the axis of the stem crosses the opening. The valve portion rotates about the axis of the stem and opens and closes an opening of a variable gas flow rate passage.

Abstract: Provided is a diaphragm type actuator which drives an operation rod in an axial direction, including: a diaphragm which is connected to the operation rod; a high pressure chamber which is adjacent to one end side of the diaphragm in the axial direction; a low pressure chamber which is adjacent to the other end side of the diaphragm in the axial direction; and a return spring which is provided in the low pressure chamber and urges the diaphragm toward the high pressure chamber. Since an absorption portion is disposed inside the high pressure chamber, a force acting on the diaphragm is absorbed when the diaphragm moves toward the high pressure chamber and stops therein.

Abstract: Provided is a diaphragm type actuator that drives an operation rod in an axial direction of the operation rod, including: a diaphragm which is connected to the operation rod; a low pressure chamber which is adjacent to one end side of the diaphragm in the axial direction; a high pressure chamber which is adjacent to the other end side of the diaphragm in the axial direction; a return spring which is provided in the low pressure chamber and urges the diaphragm toward the high pressure chamber; and a retainer which is provided on a surface near the high pressure chamber in the diaphragm. An elastic member is disposed inside the high pressure chamber and the elastic member is disposed between a retainer and a wall surface facing the retainer in the axial direction.

Abstract: A valve is provided fitted into a mounting hole of a mounting member. The valve is allowed to have play with respect to the mounting member. The valve includes a valve body having a valve surface capable of being brought into contact with and being separated from a valve seat. A valve shaft is integrally formed on a head of the valve body. An axial center of the bypass passage is inclined with respect to a thickness direction of an inner wall portion of a turbine housing so that an opening portion on an outlet side in the bypass passage is located closer to a stem side than an opening portion on an inlet side. A center of the valve surface of the valve body is eccentric to the stem side with respect to an axial center of the valve shaft.

Abstract: A connecting pin is integrally provided at a distal end portion of an actuating rod of an actuator, a pin hole for allowing insertion of the connecting pin is penetrated and formed at a distal end portion of the link member, an annular wave spring for biasing the connecting pin to a center side of the pin hole is provided inside the pin hole of the link member, the wave spring is fitted into a circumferential groove of the connecting pin and alternately has a plurality of convex portions and a plurality of concave portions along its circumferential direction, each of the convex portions of the wave spring is brought into pressure contact with an inner circumferential surface of the pin hole, and each of the concave portions of the wave spring is brought into pressure contact with a bottom surface of the circumferential groove of the connecting pin.

Abstract: In a variable-flow-rate valve mechanism, a valve is fitted into an attachment hole of an attachment member. The valve allows for play with the attachment member, and includes a valve body provided with a valve surface. A valve shaft is integrally formed in the center of a head portion of the valve body. A stopping member is provided to a leading end portion of the valve shaft. A leaf spring is provided to the valve shaft. The leaf spring includes a folded-back portion formed by bending. An insertion hole is formed in one end portion of the leaf spring. A cutout portion is formed in another end portion of the leaf spring. The one end portion of the leaf spring is fixed to the attachment member and the other end portion of the leaf spring is pressed to the head portion of the valve body.