What is claimed is:
1. A toroidal continuously variable transmission comprising:
an input disk and an output disk disposed facing each other on a common axis,
power rollers provided so that it can transmit engine torque between these inputoutput disks,
press member disposed at the rear of one of the input disk and the output disk which presses in the direction of the other disk, and
trunnions which support the power roller free to rotate and is able to gyrate around a gyration axis perpendicular to a rotation axis of the power roller, wherein:
the trunnions support the power rollers, so that they support a thrust force acting in the power rollers rotation axis direction and a traction force acting in the gyration axis direction,
the each of power rollers comprises a power roller inner wheel in frictional contact with the inputoutput disks, a power roller outer wheel supported in the trunnion, a ball bearing interposed between the power roller inner wheel and the power roller outer wheel, and an inner wheel supporting shaft which supports the power roller inner wheel such that it is free to rotate, the shaft having a shaft base part provided in the trunnion, and arranged so that the radial support rigidity is set high in the gyration axis direction and set low in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis, and
when one of the disks is pressed and displaced in the direction of the other disk by a press member, the power roller inner wheel displaces with the ball bearing by the displacement of the one of the disks.
2. A toroidal continuously variable transmission as defined in claim 1, wherein the inner wheel supporting shaft comprises a shaft tip part which supports the power roller inner wheel, the shaft base part formed in one piece with the trunnion and an intermediate shaft part between the shaft tip part and shaft base part, and the radial support rigidity is set high in the gyration axis direction and set low in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis by making the width in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis of the intermediate shaft part narrow.
3. A toroidal continuously variable transmission as defined in claim 1, wherein the power roller outer wheel is formed as one molded component with the trunnions.
4. A toroidal continuously variable transmission as defined in claim 1, wherein the inner wheel supporting shaft comprises a shaft tip part which supports the power roller inner wheel, a shaft base part formed in one piece with the power roller outer wheel, and an intermediate shaft part between the shaft tip part and the shaft base part, and the radial support rigidity is set high in the gyration axis direction and set low in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis by making the width in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis of the intermediate shaft part narrow.
5. A toroidal continuously variable transmission as defined in claim 4, wherein the shaft base part of the inner wheel supporting shaft is a member which restricts motion of the inner wheel supporting shaft in the gyration axis direction and does not restrict motion of the inner wheel supporting shaft in the direction perpendicular to the trunnion gyration axis and the power roller rotation axis relative to the trunnions.
6. A toroidal continuously variable transmission as defined in claim 5, wherein the shaft base part of the inner wheel supporting shaft is a member which receives a thrust in the direction of the disk on the opposite side to the disk to which a pressing force is input when the force of the press member is input.
7. A toroidal continuously variable transmission as defined in claim 4, wherein an oil passage for lubricating a bearing interposed between the power roller inner wheel and inner wheel supporting shaft comprises a lubricating oil supply pipe which is a different component from the trunnion and inner wheel supporting shaft, and this lubricating oil supply pipe is a member which is supported by engaging with the trunnions and the shaft tip part of the inner wheel supporting shaft.
8. A toroidal continuously variable transmission as defined in claim 4, wherein an oil passage for lubricating a bearing interposed between the power roller inner wheel and inner wheel supporting shaft comprises a lubricating oil supply pipe which is a different component from the trunnion and inner wheel supporting shaft, this lubricating oil supply pipe is a member which is supported by engaging with the trunnions and the shaft tip part of the inner wheel supporting shaft, and there is a gap between the lubricating oil supply pipe and the lubricating oil passage provided in the trunnions.
9. A toroidal continuously variable transmission as defined in claim 4, wherein the updown length of a join part of the shaft base part is set longer than the updown length of a join part of the shaft tip part in the intermediate shaft part.
10. A toroidal continuously variable transmission as defined in claim 9, wherein the intermediate shaft part of the inner wheel supporting shaft has a shape such that a bearing interposed between the power roller inner wheel and inner wheel supporting shaft does not fall out.
11. A toroidal continuously variable transmission as defined in claim 4, wherein the leftright width of a join part of the shaft base part is set narrower than the leftright width of a join part of the shaft tip part in the intermediate shaft part.
12. A toroidal continuously variable transmission as defined in claim 4, wherein the leftright width of the intermediate shaft part is set narrower than the leftright width of the shaft base part and shaft tip part.
13. A toroidal continuously variable transmission as defined in claim 4, wherein the curvature radius of the join part between the shaft base part and intermediate shaft part is set smaller than the curvature radius of the join part between the shaft tip part and intermediate shaft part.
14. A toroidal continuously variable transmission as defined in claim 4, wherein a hole is provided in the power roller rotation axis direction in the intermediate shaft part.
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 laminated ceramic capacitor comprising a body and a plurality of terminal electrodes,
wherein said body has an inner layer portion and an outer layer portion,
said inner layer portion has a plurality of internal electrodes stacked in a height direction of said body,
said internal electrodes have led-out portions led out to a side face of said body,
said outer layer portion is disposed on at least one of opposite faces of said inner layer portion in said height direction,
said terminal electrodes are spaced apart from each other in a length direction of said body perpendicular to said height direction and each extend along said height direction to cover corresponding one of said led-out portions,
at least outermost ones of said terminal electrodes in said length direction are each provided with an intermediate portion and an end portion,
said intermediate portion has a larger electrode width than said led-out portion, and
said end portion has a smaller electrode width at an edge of said side face than said intermediate portion.
2. The laminated ceramic capacitor of claim 1, wherein said end portion has an electrode width equal to or larger than an electrode width of said led-out portion.
3. The laminated ceramic capacitor of claim 2, wherein said outermost terminal electrode has a tapered-shape whose electrode width gradually decreases from said intermediate portion toward said end portion.
4. The laminated ceramic capacitor of claim 3, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
5. The laminated ceramic capacitor of claim 4, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion, and
where in D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.
6. The laminated ceramic capacitor of claim 2, wherein all said terminal electrodes are each provided with said intermediate portion and said end portion.
7. The laminated ceramic capacitor of claim 2, which satisfies:
1.10\u2266D21D22\u22661.50,
where D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.
8. The laminated ceramic capacitor of claim 7, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
9. The laminated ceramic capacitor of claim 8, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion.
10. The laminated ceramic capacitor of claim 2, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
11. The laminated ceramic capacitor of claim 10, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion, and
where in D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.
12. The laminated ceramic capacitor of claim 1, wherein said outermost terminal electrode has a tapered-shape whose electrode width gradually decreases from said intermediate portion toward said end portion.
13. The laminated ceramic capacitor of claim 12, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
14. The laminated ceramic capacitor of claim 13, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion, and
where in D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.
15. The laminated ceramic capacitor of claim 1, wherein all said terminal electrodes are each provided with said intermediate portion and said end portion.
16. The laminated ceramic capacitor of claim 1, which satisfies:
1.10\u2266D21D22\u22661.50,
where D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.
17. The laminated ceramic capacitor of claim 16, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
18. The laminated ceramic capacitor of claim 17, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion.
19. The laminated ceramic capacitor of claim 1, wherein said outermost terminal electrode is further provided with a grounding portion disposed on one face of said body and electrically connected to said end portion at said edge of said side face.
20. The laminated ceramic capacitor of claim 19, which satisfies:
D22<D23<D21,
where D23 represents a maximum electrode width of said grounding portion, and
where in D21 represents a maximum electrode width of said intermediate portion, and D22 represents an electrode width of said end portion.