BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, features, and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings, in which like portions are designated by like reference numbers and in which:
FIG. 1 is a diagram for explaining the feature of a valve timing controller in a first embodiment of the present invention;
FIG. 2 is a cross section taken on line II-II in FIG. 4, showing a valve timing controller in a first embodiment of the present invention;
FIG. 3 is a cross section taken on line III-III in FIG. 2;
FIG. 4 is a cross section taken on line IV-IV in FIG. 2;
FIG. 5 is a cross section taken on line V-V in FIG. 2;
FIGS. 6A and 6B are enlarged cross sections showing a key part in FIGS. 2 and 3;
FIG. 7 is a diagram for explaining the feature of a valve timing controller shown in FIG. 2;
FIG. 8 is a characteristic graph for explaining changing torque;
FIG. 9 is a cross section corresponding to FIG. 2, showing a valve timing controller in a second embodiment of the present invention;
FIG. 10 is a cross section taken on line X-X in FIG. 9;
FIGS. 11A and 11B are cross sections corresponding to FIGS. 6A and 6B, showing a valve timing controller in a third embodiment of the present invention;
FIGS. 12A and 12B are cross sections corresponding to FIGS. 6A and 6B, showing a valve timing controller in a fourth embodiment of the present invention;
FIG. 13 is a diagram for explaining the feature of a valve timing controller shown in FIGS. 12A and 12B;
FIG. 14 is a cross section corresponding to FIG. 2, showing a valve timing controller in a fifth embodiment of the present invention;
FIG. 15 is a cross section taken on line XV-XV in FIG. 14;
FIG. 16 is a cross section taken on line XVI-XVI in FIG. 14;
FIG. 17 is a diagram for explaining the feature of a valve timing controller in FIG. 14;
FIG. 18 is a diagram for explaining the feature of a valve timing controller shown in FIG. 14;
FIG. 19 is a cross section corresponding to FIG. 2, showing a valve timing controller in a sixth embodiment of the present invention;
FIG. 20 is a cross section taken on line XX-XX in FIG. 19;
FIG. 21 is a cross section taken on line XXI-XXI in FIG. 19;
FIG. 22 is a cross section taken on line XXII-XXII in FIG. 24, showing a valve timing controller in a seventh embodiment of the present invention;
FIG. 23 is a cross section taken on line XX(II-XXIII in FIG. 24;
FIG. 24 is a cross section taken on line XXIV-XXIV in FIG. 23, showing a valve timing controller in a seventh embodiment of the present invention;
FIG. 25 is an explanatory diagram for rotational torque T0 applied to a planetary carrier from a spring member;
FIG. 26 is a characteristic graph showing a relation between a location angle of a spring member and rotational torque applied to a planetary carrier;
FIG. 27 is a cross section showing a comparison example to the seventh embodiment;
FIG. 28 is a cross section showing a valve timing controller in an eighth embodiment of the present invention;
FIG. 29 is a cross section showing a valve timing controller in a ninth embodiment of the present invention;
FIG. 30 is a cross section showing a valve timing controller in a tenth embodiment of the present invention in the same cross section position as FIG. 23;
FIG. 31 is a diagram showing a planetary gear and a cover gear in the tenth embodiment without a driven-side rotational element, viewed from the side of a camshaft;
FIG. 32 is an explanatory diagram of forces applied to a planetary carrier and a planetary gear from a spring member;
FIG. 33 is an explanatory diagram of forces which a planetary gear receives from changing torque; and
FIG. 34 is a cross section corresponding to FIG. 2, showing a modification example of a valve timing controller shown in FIG. 14.
Patent Application
20070163526
