Abstract: A valve opening-closing timing control device includes a valve case in which an inner space is formed in a direction along a rotational axis, and a valve unit accommodated in the inner space so as to be coaxial with the rotation axis and controlling fluid to and from an advance chamber and a retard chamber. The valve unit includes a check valve on an upstream side to which fluid is supplied. The check valve includes a valve seat in which a flow passage hole through which the fluid flows is formed, and a valve body including a closing portion that can close the flow passage hole. The valve seat includes a first projection portion to surround the flow passage hole. The check valve is closed by the closing portion contacting against the first projection portion, and is opened by the closing portion being separated from the first projection portion.

Abstract: A valve timing controller includes: a driving-side rotating body rotating in synchronization with a crankshaft of an internal combustion engine; a driven-side rotating body disposed coaxially with a rotation axis of the driving-side rotating body and rotating integrally with a valve opening and closing camshaft; advancing and retarding chambers formed between the driving-side and driven-side rotating bodies; a control valve unit controlling supply and discharge of a fluid to and from the advancing and retarding chambers; and a check valve unit disposed upstream of the control valve unit in a supply flow passage. A pressure space is provided between the control valve and check valve units, the control valve unit has a flow passage structure, and the check valve unit includes a supply flow passage and a return check valve.

Abstract: A valve timing controller includes: a driving side rotation member synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotation member disposed coaxially with a rotary shaft center of the driving side rotation member and rotating integrally with a valve opening/closing cam shaft; advancing and retarding chambers formed between the driving side and driven side rotation members; a valve unit disposed coaxially with the rotary shaft center and controlling feeding and discharging of a fluid to and from the advancing and retarding chambers; and a tubular valve case having an internal space extending in a direction along the rotary shaft center, accommodating the valve unit in the internal space, having an opening at one end in the direction along the rotary shaft center, and having a bottom portion at the other end.

Abstract: A valve timing controller includes: a driving-side rotating body rotating in synchronization with a crankshaft of an internal combustion engine; a driven-side rotating body disposed coaxially with a rotation axis of the driving-side rotating body and rotating integrally with a valve opening and closing camshaft; advancing and retarding chambers formed between the driving-side and driven-side rotating bodies; a control valve unit controlling supply and discharge of a fluid to and from the advancing and retarding chambers; and a check valve unit disposed upstream of the control valve unit in a supply flow passage. A pressure space is provided between the control valve and check valve units, the control valve unit has a flow passage structure, and the check valve unit includes a supply flow passage and a return check valve.

Abstract: A check valve includes: a wall body in which a communication hole enabling flow of a fluid is formed; a valve body movable to a closed position where the communication hole is closed as the valve body comes into close contact with the wall body or to an open position where the fluid flows through the communication hole as the valve body is separated from the wall body; a spring body urging the valve body in a direction in which the valve body comes into close contact with the wall body; and a spring receiving member receiving a reaction force when the spring body urges the valve body. The spring body is configured as a conical spring, so that a winding diameter of one end portion is larger than a winding diameter of the other end portion in a compression direction.

Abstract: A valve opening-closing timing control device includes a valve case in which an inner space is formed in a direction along a rotational axis, and a valve unit accommodated in the inner space so as to be coaxial with the rotation axis and controlling fluid to and from an advance chamber and a retard chamber. The valve unit includes a check valve on an upstream side to which fluid is supplied. The check valve includes a valve seat in which a flow passage hole through which the fluid flows is formed, and a valve body including a closing portion that can close the flow passage hole. The valve seat includes a first projection portion to surround the flow passage hole. The check valve is closed by the closing portion contacting against the first projection portion, and is opened by the closing portion being separated from the first projection portion.

Abstract: A variable valve timing control device includes a drive-side rotational body, a driven-side rotational body, a connecting bolt coaxially disposed with a rotary axis and connecting the driven-side rotational body to a camshaft, the connecting bolt formed with an advanced-angle port and a retarded-angle port from an outer circumferential surface of the connecting bolt through an inner space, a valve unit disposed at the inner space of the connecting bolt, and a check valve provided at an upstream in a supplying direction of fluid relative to the valve unit. The check valve includes a seat member formed with at least one circulation port at a position being away from the rotary axis; and a valve body configured to close the circulation port at a downstream in the supplying direction of the fluid relative to the seat member, the valve body including an opening portion about the rotary axis.

Abstract: A variable valve timing control device includes a drive-side rotational body, a driven-side rotational body, a connecting bolt being coaxially disposed with a rotary axis and connecting the driven-side rotational body to a camshaft, a valve unit including a spool being disposed at an inner space of the connecting bolt and supplying and discharging a fluid to and from an advanced-angle chamber and a retarded-angle chamber, the valve unit discharging the fluid from an opening of a head portion of the connection bolt when the spool controls the fluid, and a reservoir being coaxially disposed with the rotary axis that is positioned laterally, the reservoir accumulating the fluid discharged from the opening of the head portion from which the fluid is configured to be sucked.

Abstract: A valve opening/closing timing control apparatus includes: a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed coaxially with a rotation axis of the driving side rotator and configured to rotate integrally with a valve opening/closing camshaft; a connecting bolt disposed coaxially with the rotation axis to connect the driven side rotator to the camshaft, and having an advanced angle port and a retarded angle port formed to extend from an outer peripheral surface to an inner space thereof, the advanced angle port and the retarded angle port communicating with an advanced angle chamber and a retarded angle chamber between the driving side rotator and the driven side rotator, respectively; and a valve unit disposed in the inner space of the connecting bolt.

Abstract: A valve opening and closing timing control apparatus includes: a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed coaxially with a rotation axis of the driving side rotator and configured to rotate integrally with a valve opening and closing camshaft; a phase controller configured to control a relative rotation phase between the driving side rotator and the driven side rotator by supply and discharge of a fluid; and a torsion spring configured to attain a biasing force to displace the relative rotation phase between the driving side rotator and the driven side rotator in a predetermined direction. The driving side rotator is fastened to a cover-shaped plate, and the torsion spring includes a first arm and a second arm.

Abstract: A valve timing controller includes: a driving side rotation member synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotation member disposed coaxially with a rotary shaft center of the driving side rotation member and rotating integrally with a valve opening/closing cam shaft; advancing and retarding chambers formed between the driving side and driven side rotation members; a valve unit disposed coaxially with the rotary shaft center and controlling feeding and discharging of a fluid to and from the advancing and retarding chambers; and a tubular valve case having an internal space extending in a direction along the rotary shaft center, accommodating the valve unit in the internal space, having an opening at one end in the direction along the rotary shaft center, and having a bottom portion at the other end.

Abstract: A valve opening/closing timing control device is configured to implement controlling of a relative rotation phase and controlling of a lock mechanism by means of a small control valve. The valve opening/closing timing control device includes a first valve whose position is switched electromagnetically and a second valve whose position is switched by a fluid pressure controlled by the first valve. The second valve is constituted of at least one of a phase control valve that controls the relative rotation phase by providing an advance chamber or a retard chamber with an operating fluid from a fluid pressure pump and a lock control valve that controls a lock state of the lock mechanism by controlling the operating fluid from the fluid pressure pump.

Abstract: A valve opening and closing timing control device includes: a driving-side rotating body synchronously rotated with a crankshaft of an engine and having a lid member fixed in a direction of the rotational axis; a driven-side rotating body integrally rotated with a camshaft for opening and closing a valve on the same rotational axis; a lock mechanism having a lock member moving in the direction and a lock recessed portion formed inside the lid member and into which the lock member is able to be fitted; and a torsion spring disposed outside the lid member and exerting a biasing force to the driving-side and driven-side rotating bodies, wherein a restricting projection portion for restricting a movement of the torsion spring in the direction is formed in the lid member.

Abstract: A spring holder supporting a torsion spring applying an urging force in a valve opening/closing timing control apparatus is configured to be able to be attached to an appropriate position relative to a driven side rotary body and rotatable in unison. The spring holder includes a seat portion that is connected and fixed to the driven side rotary body, a guide portion that extends along a rotational axis, an alignment portion fitted into an engaging portion of the driven side rotary body and a restricted portion fitted into a restricting portion of the driven side rotary body. A support portion holding an end of the torsion spring is formed in the guide portion.

Abstract: A valve opening/closing timing control apparatus includes: a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed coaxially with a rotation axis of the driving side rotator and configured to rotate integrally with a valve opening/closing camshaft; a connecting bolt disposed coaxially with the rotation axis to connect the driven side rotator to the camshaft, and having an advanced angle port and a retarded angle port formed to extend from an outer peripheral surface to an inner space thereof, the advanced angle port and the retarded angle port communicating with an advanced angle chamber and a retarded angle chamber between the driving side rotator and the driven side rotator, respectively; and a valve unit disposed in the inner space of the connecting bolt.

Abstract: A valve opening/closing timing control apparatus includes: a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed coaxially with a rotation axis of the driving side rotator and configured to rotate integrally with a valve opening/closing camshaft; a connecting bolt disposed coaxially with the rotation axis to connect the driven side rotator to the camshaft, and having an advanced angle port and a retarded angle port formed to extend from an outer peripheral surface to an inner space thereof, the advanced angle port and the retarded angle port communicating with an advanced angle chamber and a retarded angle chamber between the driving side rotator and the driven side rotator, respectively; and a valve unit disposed in the inner space of the connecting bolt.

Abstract: A valve opening/closing timing control apparatus includes: a driving side rotator configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed coaxially with a rotation axis of the driving side rotator so as to rotate integrally with a valve opening and closing camshaft; a connecting bolt disposed coaxially with the rotation axis to connect the driven side rotator to the camshaft and having an advanced angle port and a retarded angle port formed to extend from an outer peripheral surface to an inner space thereof, which respectively communicate with an advanced angle chamber and a retarded angle chamber between the driving side rotator and the driven side rotator; and a valve unit disposed in the inner space of the connecting bolt, in which the valve unit includes a check valve, and the check valve includes an opening plate and a valve plate.

Abstract: A valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a tubular member provided at an inner portion of the driven-side rotation member, a bolt in a tubular form provided at an inner side of the tubular member, an introduction passage provided at least at one of the bolt and the tubular member between the bolt and the tubular member and bringing a working fluid to flow in the rotation axis direction, an introduction communication passage provided at the bolt to bring the working fluid at the introduction passage to flow to an inner side of the bolt, an advanced angle communication passage and a retarded angle communication passage provided at different positions from each other in a longitudinal direction of the rotation axis, and a control valve body provided at the inner side of the bolt.

Abstract: A valve opening and closing timing control apparatus includes: a driving side rotor synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotor disposed coaxially with a rotary axis of the driving side rotor and synchronously rotating with a camshaft; a connecting bolt disposed coaxially with the rotary axis, and connecting the driven side rotor to the camshaft; and a position determination unit performing positioning between the driven side rotor and the camshaft, or in a case where an intermediate member is provided between the driven side rotor and the camshaft, between the driven side rotor and the intermediate member, or between the camshaft and the intermediate member, wherein the position determination unit includes an engaging pin, first and second hole portions, and a deformation absorbing unit.

Abstract: A valve opening and closing timing control apparatus includes: a driving side rotor synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotor disposed coaxially with the driving side rotor and synchronously rotating with a camshaft; a fluid pressure chamber formed on at least one of the driving side and driven side rotors, and partitioned into advance angle and retard angle chambers; a bolt member disposed coaxially with a rotary axis of the driven side rotor, connecting the driven side rotor and the camshaft, and provided with a cylindrical portion; a partition body provided with a press-fit portion, and partitioning the cylindrical portion into first and second flow passages; a valve body opening and closing the first flow passage; and a valve housing body accommodating the valve body.