Claims
- 1. A valve timing adjusting device which is installed in a driving force transmitting system for transmitting a driving force from a driving shaft of an internal combustion engine to a driven shaft for opening and closing at least one of an intake valve and an exhaust valve, and adjusts the opening-closing timing of at least either one of the intake valve or the exhaust valve, said valve timing adjusting device comprising:
a housing member rotating together with said driving shaft, said housing member defining a housing chamber thereinside; and a vane member rotating together with said driven shaft, said vane member housed in said housing chamber to partition said housing chamber into a retard chamber and an advance chamber, said vane member driven to rotate by a fluid pressure with respect to said housing member within a range of predetermined angle, wherein
one of said housing member and said vane member includes a straight hole, said straight hole has an axis perpendicular to a direction of relative rotation of said vane member with respect to said housing member, a tapered hole is formed on a deep side of said straight hole and reduced in diameter on the deep side, the other of said housing member and said vane member includes a restraining pin, said restraining pin is adapted to be retained by said straight hole to restrain the relative rotation of said vane member with respect to said housing member in a predetermined angular range and also adapted to be retained by said tapered hole to restrain the relative rotation of said vane member with respect to said housing member at a predetermined angular position; and a pin driving means is provided for driving said restraining pin into and out of said straight hole and said tapered hole.
- 2. A valve timing adjusting device according to claim 1, wherein a front end portion of said restraining pin is chamfered.
- 3. A valve timing adjusting device according to claim 1, wherein an outside diameter of said restraining pin is smaller at a portion thereof which comes into abutment against said straight hole than at a portion thereof which comes into sliding contact with said pin driving means.
- 4. A valve timing adjusting device which is installed in a driving force transmitting system for transmitting a driving force from a driving shaft of an internal combustion engine to a driven shaft for opening and closing at least one of an intake valve and an exhaust valve, and adjusts the opening-closing timing of at least either one of the intake valve or the exhaust valve, said valve timing adjusting device comprising:
a housing member rotating together with said driving shaft, said housing member defining a housing chamber thereinside; and a vane member rotating together with said driven shaft, said vane member housed in said housing chamber to partition said housing chamber into a retard chamber and an advance chamber, said vane member driven to rotate by a fluid pressure with respect to said housing member within a range of predetermined angle, wherein
one of said housing member and said vane member includes a straight hole, said straight hole has an axis perpendicular to a direction of relative rotation of said vane member with respect to said housing member, the other of said housing member and said vane member includes a restraining pin, said restraining pin has a first cylindrical portion and a second cylindrical portion, said first cylindrical portion is adapted to be retained by said straight hole to restrain the relative rotation of said vane member with respect to said housing member in a predetermined angular range, said second cylindrical portion is formed on a base end side of said first cylindrical portion and thicker than said first cylindrical portion, said second cylindrical portion is adapted to be retained by said straight hole to restrain the relative rotation of said vane member with respect to said housing member at a predetermined angular position, and a pin driving means is provided for driving said restraining pin into and out of said straight hole.
- 5. A valve timing adjusting device according to claim 4, wherein
said restraining pin has a tapered portion between said first and second cylindrical portions, and a side face of said tapered portion is formed in a circular truncated cone.
- 6. A valve timing adjusting device according to claim 4, wherein a front end portion of said restraining pin is chamfered.
- 7. A valve timing adjusting device according to claim 4, wherein depth of insertion of said restraining pin into said straight hole is limited by abutment of a front end portion thereof against a bottom of said straight hole.
- 8. A valve timing adjusting device according to claim 4, wherein an outside diameter of said restraining pin is smaller at the second cylindrical portion than at a portion thereof which comes into sliding contact with said pin driving means.
- 9. A valve timing adjusting device which is installed in a driving force transmitting system for transmitting a driving force from a driving shaft of an internal combustion engine to a driven shaft for opening and closing at least one of an intake valve and an exhaust valve, and adjusts the opening-closing timing of at least either one of the intake valve or the exhaust valve, said valve timing adjusting device comprising:
a housing member rotating together with said driving shaft, said housing member defining a housing chamber thereinside; and a vane member rotating together with said driven shaft, said vane member housed in said housing chamber to partition said housing chamber into a retard chamber and an advance chamber, said vane member driven to rotate by a fluid pressure with respect to said housing member within a range of predetermined angle, wherein
one of said housing member and said vane member includes a hole having an axis perpendicular to a direction of relative rotation of said vane member with respect to said housing member, the other of said housing member and said vane member includes a restraining pin, said restraining pin has a front end portion and a base end portion, said front end portion is adapted to be retained by said hole to restrain the relative rotation of said vane member with respect to said housing member in a predetermined angular range, said base end portion is formed on a base end side of said front end portion and thicker than said front end portion, said base end portion is adapted to be retained by said hole to restrain the relative rotation of said vane member with respect to said housing member at a predetermined angular position, outer walls of said front end portion and said base end portion form a stepped outer wall surface, and a pin driving means is provided for driving said restraining pin into and out of said hole.
- 10. A valve timing adjusting device according to claim 9, wherein said hole is a tapered hole.
- 11. A valve timing adjusting device according to claim 9, wherein said hole is a straight hole.
- 12. A valve timing adjusting device according to claim 9, wherein at least one of said front end portion and said base end portion of the restraining pin is tapered.
- 13. A valve timing adjusting device according to claim 9, wherein at least one of said front end portion and said base end portion of said restraining pin is cylindrically formed.
- 14. A valve timing adjusting device according to claim 9, wherein depth of insertion of said restraining pin into said hole is limited by abutment of said front end portion thereof against a bottom of said hole.
- 15. A valve timing adjusting device according to claim 9, wherein an outside diameter of said restraining pin is smaller at the base end portion thereof than at a portion thereof which comes into sliding contact with said pin driving means.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2000-308123 |
Oct 2000 |
JP |
|
2001-172450 |
Jun 2001 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is based on and incorporates herein by reference Japanese Patent Application Nos. 2000-308123 filed on Oct. 6, 2000, and 2001-172450 filed on Jun. 7, 2001.