1. A fuel-injection valve including a fuel-injection hole, a valve element and a valve seat to open and close said fuel-injection hole and a force-applying member to apply force in a direction of motion of said valve element to said valve element,
wherein said fuel-injection valve further comprises:
a primary oscillation system, that includes said valve element and said force-applying member, and a secondary oscillation system added to said primary oscillation system; and
a drive unit to apply force to said valve element in a direction opposite to that applied by said force applying member, wherein said drive unit includes a coil and an electromagnet with a magnetic circuit; said force applying member includes a spring to press said valve element against said valve seat; said primary oscillation system includes said valve element and said spring; and said secondary oscillation system includes a linked movable member provided between said spring and said valve element, which can be moved in the direction of motion of said valve element, and an elastic part disposed between said linked movable member and said valve element and functioning as a spring, which can deform in said direction of motion of said valve element.
2. A fuel-injection valve according to claim 1, wherein a first force is applied to said primary oscillation system by said secondary oscillation system and a second force is applied to said primary oscillation system from sources other than said first force applied to said primary oscillation system by said secondary oscillation system, wherein a phase angle of said first force is staggered from a phase angle of said second force.
3. A fuel-injection valve according to claim 1, wherein said valve element includes a movable iron core which is a part of said magnetic circuit; and said elastic part provided in said secondary oscillation system and said movable iron core are fabricated so as to have a united structure.
4. A fuel-injection valve according to claim 1, wherein said valve element includes a movable iron core which is one of parts composing said magnetic circuit; said elastic part provided in said secondary oscillation system and said movable iron core are fabricated in a united structure; and surface processing is applied on the surface of a part of said elastic part, against which said linked movable member butts.
5. A fuel-injection valve according to claim 1, wherein said elastic part is a plate spring.
6. A fuel-injection valve according to claim 1, wherein said valve element includes a movable iron core which is one of parts composing said magnetic circuit; a concave portion is provided in the central area of the top part of said movable iron core, perpendicular to said direction of motion of said valve element; and said elastic part which is set in said concave portion possesses projection parts projecting from the inner peripheral part of said elastic part in said direction of motion of said valve element, with a partial area of each of said projection parts forming contact faces which contact the bottom of said linked movable member.
7. A fuel-injection valve according to claim 6, wherein a thickness value of said projection parts in said elastic part is smaller than a length value of said projection parts.
8. A fuel-injection valve according to claim 1, wherein said elastic part in said secondary oscillation system is included in said linked movable member.
9. A fuel-injection valve according to claim 8, wherein said elastic part in said secondary oscillation system is composed by shaping a constricted portion in said linked movable member, whose cross section perpendicular to said direction of motion of said valve element is smaller than that of other portions of said linked movable member.
10. A fuel-injection valve according to claim 1, wherein said elastic part in said secondary oscillation system is composed by shaping either the end part of said linked movable member, which is opposite to said valve element, or the end part of said valve element, which is opposite to said linked movable element, into a curved surface.
11. A fuel-injection valve according to claim 1, wherein a mass quantity of said linked movable member is set within a range of 0.3-1.5 g, and a spring constant of said elastic part in said secondary oscillation system is set within a range of 100-1000 kgfmm.
12. A fuel-injection valve according to claim 1, wherein a spring is used as said force-applying member so as to press said valve element against said valve seat; said primary oscillation system includes said valve element and said spring; and said secondary oscillation system, which is located between said spring and said valve element, includes a linked movable member which can move in said direction of motion of said valve element, and a damping mechanism for damping the oscillation of said linked movable member.
13. A fuel-injection valve according to claim 12, wherein said damping mechanism is a damper region composed of a convex portion shaped in one part and a concave portion shaped in another part, of the bottom part of said linked movable member and the top part of said valve element, respectively, which are facing each other.
14. A fuel-injection valve according to claim 1, wherein said elastic part is ring-shaped, and notches are formed in the inner peripheral part.
15. A fuel-injection valve according to claim 14, wherein said elastic part possesses three notches.
16. An internal combustion engine including a fuel-injection valve according to claim 1.
17. A fuel-injection valve including a fuel-injection hole, a valve element and a valve seat for opening and closing said fuel-injection hole, a first spring for applying force in a direction of motion of said valve element to said valve element, and a second spring and a mass located in series between said valve element and said first spring, wherein said valve element, said first spring, said second spring and said mass are all located along an axis of said fuel-injection valve.
18. A fuel-injection valve according to claim 17, wherein said first spring is a coil spring and said second spring is a leaf spring.
19. A fuel-injection valve including a fuel-injection hole, a valve element and a valve seat for opening and closing said fuel-injection hole, and a force-applying member for applying force in a direction of motion of said valve element to said valve element, wherein said fuel injection valve further comprises a primary oscillation system, that includes said valve element and said force-applying member, and a secondary oscillation system added to said primary oscillation system to operate to dampen oscillation of said primary oscillation system.
20. A fuel-injection valve according to claim 1, further comprising a drive unit for applying force to said valve element in a direction opposite to that applied by said force-applying member.
21. A fuel-injection valve according to claim 20, further including a drive unit for applying force to said valve element in a direction opposite to that applied by said first spring.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A self contained, toolless quick change tool holder for cutter inserts on machine tools, the self contained quick change tool holder comprising:
a housing having at least one seat portion which is adapted to receive and conform to the shape of a cutter insert,
a clamping arm mounted in the insert housing, the clamping arm movable in the insert housing, the clamping arm having a clamp portion extending over the seat portion, the clamp portion adapted to engage a cutter insert, and
a locking mechanism completely contained within the housing, the locking mechanism having a clamp position which forces the clamp portion of the clamping arm to engage a cutter insert, the locking mechanism having a release position which forces the clamp portion to disengage from a cutter insert to allow removal and replacement of said cutter insert, the locking mechanism movable between the release position and the clamp position.
2. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises a shaft, one end of said shaft being rotatably mounted proximate to a midpoint of the clamping arm, the other end of the shaft being pivotally mounted to an eccentric which is operably connected to one end of a lever, the lever, the eccentric, the shaft and the clamping arm having the clamp position which holds cutting insert in the seat, the lever lifting upwardly to rotate the eccentric which lifts the shaft and the clamping arm to the release position whereby the cutting insert is separable from the seat.
3. The self contained, toolless quick change tool holder of claim 2 wherein the clamping arm has a brace portion which extends opposite the clamp portion from the midpoint, the brace portion including an edge which engages the housing to provide leverage thereon.
4. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises a shaft, one end of said shaft being rotatably mounted proximate to a midpoint of the clamping arm, the other end of the shaft having a wedge which is adapted to engage a wedge lock mounted to a push rod, the push rod, the wedge lock, the wedge, the shaft and the clamping arm having the clamp position which holds cutting insert in the seat, the push rod laterally moving to operate the wedge lock and wedge to move the shaft and the clamping arm to the release position whereby the cutting insert is separable from the seat, the lateral movement being reversible to move the clamping arm to the clamp position.
5. The self contained, toolless quick change tool holder of claim 4 wherein the clamping arm has a brace portion which extends opposite the clamp portion from the midpoint, the brace portion including an edge which engages the housing to provide leverage thereon.
6. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises a shaft, one end of said shaft being rotatably mounted proximate to a midpoint of the clamping arm, the other end of the shaft engaging a push rod, one end of a second shaft also engaging the other end of the shaft, the other end of the second shaft being rotatably mounted to the housing at an acute angle from the shaft, the clamping arm, the first shaft, the second shaft and the push rod defining the clamp position which holds cutting insert in the seat, the push rod laterally moving to operate rotate the shaft and the second shaft to move the shaft and the clamping arm to the release position whereby the cutting insert is separable from the seat, the lateral movement being reversible to move the clamping arm to the clamp position.
7. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises rotatably mounting the clamping arm to a pivot proximate to the midpoint of the clamping arm, the locking mechanism further comprising a first shaft, one end of said first shaft being rotatably mounted to a one end of the clamping arm, the other end of the first shaft engaging a push rod, one end of a second shaft also engaging the other end of the first shaft, the other end of the second shaft being rotatably mounted to the housing at a position extending opposite the first shaft, the clamping arm, the first shaft, the second shaft and the push rod defining the clamp position which holds cutting insert in the seat, the push rod laterally moving to operate rotate the first shaft and the second shaft to move the shaft and the clamping arm to the release position whereby the cutting insert is separable from the seat, the lateral movement being reversible to move the clamping arm to the clamp position.
8. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises rotatably mounting the clamping arm to a pivot proximate to the midpoint of the clamping arm, the locking mechanism further comprising a shaft, one end of said first shaft being rotatably mounted to a one end of the clamping arm, the other end of the shaft engaging a push rod, the clamping arm, the shaft, and the push rod defining the clamp position which holds cutting insert in the seat, the push rod laterally moving to operate rotate and move the shaft and the clamping arm to the release position whereby the cutting insert is separable from the seat, the lateral movement being reversible to move the clamping arm to the clamp position.
9. The self contained, toolless quick change tool holder of claim 1 wherein the locking mechanism comprises slidably mounting the clamping arm to the housing, the clamping arm being L-shaped with one leg of said L-shape forming the clamp portion, the other leg of the L-shape engaging a push rod, the clamping arm and the push rod defining the clamp position which holds cutting insert in the seat, the push rod laterally moving to slide clamping arm to the release position whereby the cutting insert is separable from the seat, the lateral movement being reversible to move the clamping arm to the clamp position.