Abstract: A valve mechanism is provided with a cam, a valve urged in a valve closing direction by a valve spring, a rocker arm, and a lash adjuster. The lash adjuster may include a plunger to which a pressing force of the cam and an urging force of the valve spring are transmitted through the rocker arm, a housing that forms a thread engagement portion, and a compression coil spring urging the plunger in the extension direction. The thread engagement portion may be such that a load acting on the plunger in the plunger extension or contraction direction causes sliding rotation in the thread engagement portion to be suppressed, and such that a lateral load acting on the plunger causes the suppression of sliding rotation to be relieved.

Abstract: Each time a highly-viscous substance is extruded, a variation in weight of each cut piece of the highly-viscous substance is minimized. Metallic sodium (5) loaded in an extruder main body (3) is extruded from a nozzle (7) of the extruder main body (3) with a pressing tool (4) and, when it is detected that the metallic sodium (5) is extruded to a predetermined position, the movement of the pressing tool (4) is stopped and the extruded metallic sodium (5) is cut. In this case, an impulse (P) after stop is brought closer to a constant value until a load no longer acts on the metallic sodium (5) in the extruder main body (3) after stopping the movement of the pressing tool (4) by adjusting the movement speed of the pressing tool (4).

Abstract: Each time a highly-viscous substance is extruded, a variation in weight of each cut piece of the highly-viscous substance is minimized. Metallic sodium (5) loaded in an extruder main body (3) is extruded from a nozzle (7) of the extruder main body (3) with a pressing tool (4) and, when it is detected that the metallic sodium (5) is extruded to a predetermined position, the movement of the pressing tool (4) is stopped and the extruded metallic sodium (5) is cut. In this case, an impulse (P) after stop is brought closer to a constant value until a load no longer acts on the metallic sodium (5) in the extruder main body (3) after stopping the movement of the pressing tool (4) by adjusting the movement speed of the pressing tool (4).

Abstract: A phase varying apparatus capable of smoothly varying the phase angle of a camshaft relative to a drive rotor by comprising: a drive rotor supported by a camshaft and driven by a crankshaft; a first control rotor integral with the camshaft; a first torquing mechanism for providing the first drive rotor with a torque in one direction, and a reverse rotation mechanism for proving the first control rotor with a torque in the opposite direction, wherein the reverse rotation mechanism comprises a first radius-decreasing guide groove formed in the control rotor, a crank member adapted to rotate about a position offset from the rotational axis of the drive rotor, and a first pin mechanism mounted on the crank member and movable in the radius-decreasing guide groove, and a second operative mechanism for rotating the first control rotor in the opposite rotational direction relative to the drive rotor.

Abstract: A phase varying apparatus capable of smoothly varying the phase angle of a camshaft relative to a drive rotor by comprising: a drive rotor supported by a camshaft and driven by a crankshaft; a first control rotor integral with the camshaft; a first torquing mechanism for providing the first drive rotor with a torque in one direction, and a reverse rotation mechanism for proving the first control rotor with a torque in the opposite direction, wherein the reverse rotation mechanism comprises a first radius-decreasing guide groove formed in the control rotor, a crank member adapted to rotate about a position offset from the rotational axis of the drive rotor, and a first pin mechanism mounted on the crank member and movable in the radius-decreasing guide groove, and a second operative mechanism for rotating the first control rotor in the opposite rotational direction relative to the drive rotor.

Abstract: The inventive phase varying apparatus (50) has a drive rotor (51) driven by the crankshaft of the engine, a phase angle varying mechanism (54) for varying the phase angle of the camshaft relative to the crankshaft, and a self-locking mechanism (56) for preventing a gap in phase angle between the drive rotor and the camshaft due to an externally input disturbing torque. The self-locking mechanism has a cylinder section (69) mounted on the drive rotor, a circular eccentric cam (64) integrated with the camshaft and having inside thereof a cam holding groove (68a), and a lock plate (68) rotatably supporting the periphery of the circular eccentric cam and having on the outer periphery thereof at least four radial abutment protrusions (74-77) that are adapted to abut against the inner periphery (69a) of the cylinder section (69) to perform self-locking.

Abstract: OBJECT: To provide a compact phase varying device for an automobile engine, adapted to vary the relative phase angle between the crankshaft of the engine and the camshaft of the device over a wider range than that of conventional device. MEANS FOR ACHIEVING THE OBJECT: The phase varying device has: a drive rotor driven by the crankshaft of the engine; a first control rotor rotatable relative to the drive rotor under the action of a torque means; and a phase angle varying mechanism operably coupled to the first control rotor in rotational motion relative to the first control rotor, the drive rotor and first control rotor rotatably supported by a camshaft of the phase varying apparatus, the phase varying device adapted to vary the phase angle of the camshaft relative to the crankshaft by varying the phase angle of the camshaft relative to the drive rotor.

Abstract: The inventive phase varying apparatus (50) has a drive rotor (51) driven by the crankshaft of the engine, a phase angle varying mechanism (54) for varying the phase angle of the camshaft relative to the crankshaft, and a self-locking mechanism (56) for preventing a gap in phase angle between the drive rotor and the camshaft due to an externally input disturbing torque. The self-locking mechanism has a cylinder section (69) mounted on the drive rotor, a circular eccentric cam (64) integrated with the camshaft and having inside thereof a cam holding groove (68a), and a lock plate (68) rotatably supporting the periphery of the circular eccentric cam and having on the outer periphery thereof at least four radial abutment protrusions (74-77) that are adapted to abut against the inner periphery (69a) of the cylinder section (69) to perform self-locking.

Abstract: An axially short electromagnetic-clutch rotation stopping structure for use with a phase varying apparatus (30) of an automobile engine, adapted to stop the rotation of an electromagnetic clutch (35) relative to an electromagnetic clutch cover (70) while braking the brake drum (34) of the phase varying apparatus (30) to vary the phase angle of the camshaft (45) of the apparatus (30) relative to the crankshaft of the engine. An electromagnetic clutch cover (70) has a clutch holding section (71) for accommodates a substantially C-shaped leaf spring (73). The electromagnetic clutch (35) is held unrotatable with respect to the clutch holding section (71) by first rotation stopping means (71e, 73a) provided between the electromagnetic clutch (35) and by second rotation stopping means (73b, 35d) provided between the leaf spring (73) and the electromagnetic clutch (35).

Abstract: The invention provides a variable cam phaser for an automobile engine, equipped with a self-locking mechanism which is simpler in structure, cost effective, and easy to manufacture. The self-locking mechanism includes: a eccentric circular members (12) integral with the camshaft (6) and a support groove (15) for supporting the eccentric circular members from the both sides thereof at positions offset from the camshaft axis towards the eccentric cam center; a lock plate integrally held with the control rotor by means of a coupling mechanism; and a cylindrical portion belonging to the drive rotor in which the lock plate is inscribed. The self-locking mechanism prevents an unexpected change in the phase angle caused by an external disturbing toque transmitted to the camshaft via the crankshaft of the engine.

Abstract: A phase changing device for automobile engine, the device comprising curved first guide grooves formed in the control rotor, each groove skewed with respect to a circumference of a circle centered at the rotational axis; oblique guide grooves each groove formed in the middle rotor and extending at an angle with respect to a radius crossing the groove; second guide grooves formed in the drive rotor and skewed with respect to the circumference of a circle centered at the rotational axis, block sections each extending along, and movable in, the respective first guide; first slide members each protruding from the respective block section for engagement with, and for movement in, the respective skewed guide groove; and phase varying members each having a second slide member that extends through an escape groove formed in the middle rotor and engages the respective second guide groove to move in the second guide groove.

Abstract: [PROBLEMS] To keep a determined phase angle without consuming power once the phase angle is determined. [MEANS FOR SOLVING PROBLEMS] An outer cylinder part (10) is connected with an intermediate member (14). The intermediate member (14) is connected with an inner cylinder part (12) via a pin (74). Rotary drums (84, 86) are arranged on both sides of a roller (76) mounted to the intermediate member (14). When the rotation of one rotary drum transmits the rotating force of the one rotary drum to the other rotary drum via the intermediate member (14) and the roller (76), the one rotary drum moves to the side of the other rotary drum, and the pin (74) moves along the guide grooves (48, 50) of the inner cylinder part (12) to rotate the inner cylinder part (12) and the outer cylinder part (10) in directions opposite to each other along the circumferential direction.

Abstract: An axially short electromagnetic-clutch rotation stopping structure for use with a phase varying apparatus (30) of an automobile engine, adapted to stop the rotation of an electromagnetic clutch (35) relative to an electromagnetic clutch cover (70) while braking the brake drum (34) of the phase varying apparatus (30) to vary the phase angle of the camshaft (45) of the apparatus (30) relative to the crankshaft of the engine. An electromagnetic clutch cover (70) has a clutch holding section (71) for accommodates a substantially C-shaped leaf spring (73). The electromagnetic clutch (35) is held unrotatable with respect to the clutch holding section (71) by first rotation stopping means (71e, 73a) provided between the electromagnetic clutch (35) and by second rotation stopping means (73b, 35d) provided between the leaf spring (73) and the electromagnetic clutch (35).

Abstract: OBJECT: To provide a compact phase varying device for an automobile engine, adapted to vary the relative phase angle between the crankshaft of the engine and the camshaft of the device over a wider range than that of conventional device. MEANS FOR ACHIEVING THE OBJECT: The phase varying device has: a drive rotor driven by the crankshaft of the engine; a first control rotor rotatable relative to the drive rotor under the action of a torque means; and a phase angle varying mechanism operably coupled to the first control rotor in rotational motion relative to the first control rotor, the drive rotor and first control rotor rotatably supported by a camshaft of the phase varying apparatus, the phase varying device adapted to vary the phase angle of the camshaft relative to the crankshaft by varying the phase angle of the camshaft relative to the drive rotor.

Abstract: PROBLEMS TO BE SOLVED To provide an oil film for permitting transmission of torque between a clutch case and a rotary drum. MEANS FOR SOLVING THE PROBLEMS A phase-varying apparatus for an automobile engine for varying the valve timing of intake and exhaust valves by moving an intermediate member (30) to cause a relative rotation between an outer cylinder (10) and an inner cylinder (20). The apparatus includes a circular rotary drum (44) connected to the intermediate member (30) and an electromagnetic clutch (42) for generating a braking force that acts on the rotary drum 44. The electromagnetic clutch 42 has an annular clutch case (60) arranged to face the rotary drum (44) and an electromagnetic coil 62 for generating the braking force when energized.

Abstract: Objects The invention provides a phase changing device for automobile engine capable of preventing an unanticipated change in phase angle between the middle rotor and the camshaft of the device caused by a disturbing torque while preventing frictional wear of the inner circumferential walls of groove guides and avoiding generation of axial thrusts of links of the device. Means for Solving the Problems A phase changing device for automobile engine, having a drive rotor, an middle rotor, and a control rotor, all arranged to rotate about a common rotational axis, the device controlling the control rotor so as to vary the relative phase angle between the drive rotor and middle rotor.

Abstract: [Problems] To keep a determined phase angle without consuming power once the phase angle is determined. [Means for Solving Problems] An outer cylinder part (10) is connected with an intermediate member (14). The intermediate member (14) is connected with an inner cylinder part (12) via a pin (74). Rotary drums (84, 86) are arranged on both sides of a roller (76) mounted to the intermediate member (14). When the rotation of one rotary drum transmits the rotating force of the one rotary drum to the other rotary drum via the intermediate member (14) and the roller (76), the one rotary drum moves to the side of the other rotary drum, and the pin (74) moves along the guide grooves (48, 50) of the inner cylinder part (12) to rotate the inner cylinder part (12) and the outer cylinder part (10) in directions opposite to each other along the circumferential direction.