JPH0346048U - - Google Patents

Description

[Brief explanation of the drawing]

1 and 2 are a side sectional view and a front sectional view showing an embodiment of the continuously variable transmission according to this invention, and FIG. 1a is a sectional view taken along line a-a in FIG. Figure b is a sectional view taken along line bb in Figure 2a, Figure 2a is a sectional view taken along line aa in Figure 1a, Figure 2b is bb in Figure 1a.
3 is an explanatory diagram showing the operating principle of the first and second non-circular gears in FIG.
The figure is a sectional view taken along the - line in FIG. 3, FIG. 5 is a curve diagram regarding the angular velocity ratio between the first and second non-circular gears in FIG. 3, and FIG.
An explanatory diagram showing the operating principle of the second and third non-circular gears, FIG. 7 is a sectional view taken along the - line in FIG. 6,
Figures 8 to 10 are curve diagrams showing the angular velocity modulation characteristics of the mechanism in Figure 6, Figure 11 shows the overall characteristics of the device in Figure 1, and Figure a shows the rotation angle and input of the second frame. Figure b shows the relationship between the relative rotation angle of the first and second frames and the torsional torque of the torsionally elastic member, and Figure c shows the relationship between the output torque and the input/output shaft angular velocity ratio. Curve diagrams showing respectively, the first
FIG. 2 is a side sectional view showing an outline of a conventional continuously variable transmission. 1... Outer box, 2, 3... Bearing, 5... Circular internal gear, 11a to 11d... First non-circular gear, 20
...Second rotating shaft, 21a-21d...Second non-circular gear, 25...Circular planetary gear, 30...Third rotating shaft, 31a-31d...Third non-circular gear, 3
5...Circular gear, 37...Bearing with one-way clutch function, 40...Fourth rotating shaft, 45...Circular sun gear, 50...Fifth rotating shaft, 55...Circular gear, 60... First frame, 62, 63... Bearing, 70... Second frame, 71, 72... Bearing, 80... Torsional elastic member. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Amendment November 20, 2002 The scope of claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] A first non-circular gear made of an internal gear rotatably supported, and a second non-circular gear fixed to a second rotating shaft and made of an external gear meshing with the first non-circular gear. a first angular velocity modulation means comprising a circular gear; external teeth that are supported by the first non-circular gear and a third rotating shaft so as to transmit power in one direction via a bearing with a one-way clutch function and mesh with the first non-circular gear; A second angular velocity modulation means using a third non-circular gear consisting of a gear, a fixed external device that supports a fourth rotating shaft on one end via a bearing, and supports a fifth rotating shaft on the other end via a bearing. a box rotatably supported by the fourth and fifth rotating shafts via bearings, rotatably supporting the first non-circular gear via the bearings, and supporting the second rotating shaft via the bearings; a first frame, which is rotatably supported by the fourth and fifth rotating shafts via bearings, and is rotatable relative to the first frame; a second frame that supports and penetrates the rotating shaft via a bearing; a circular sun gear fixed to the fourth rotating shaft; a circular internal gear fixed to the outer box; fixed to the second rotating shaft. an input-side circular planetary gear that meshes with the circular sun gear and the circular internal gear; an output-side circular gear that is fixed to the third rotating shaft; and an output-side circular gear that is fixed to the fifth rotating shaft and meshes with the output-side circular gear. an output circular gear, a torsionally elastic member installed between the first and second frames, applying torsional torque to widen the relative rotation angle α of both frames, and resisting the output torque or the input torque; A plurality of sets of the first and second angular velocity modulation means are provided, the second non-circular gears of each set are fixed to the second rotating shaft with different phases, and the first and second angular velocity modulation means Exponential velocity modulation is performed by the secondary angular velocity modulation means, and the angular velocity ratio of the third rotation axis to the second rotation axis is determined by the relative rotation between the first frame and the second frame. The stepless gear is set to the value of an exponential function equation eK·α, which is based on the rotation angle α determined from the moving position and the angular velocity modulation coefficient K, which is unique to the non-circular gear pair and can be arbitrarily set in advance. gearbox. The brief description of the drawing has been amended as follows. "Figure a on page 27, lines 19-20 of the specification...
The "rotation angle" is corrected to "the relative rotation angle of the first and second frames in Figure a".

Claims (1)

[Claims for Utility Model Registration] A first non-circular gear made of an internal gear rotatably supported, and a second non-circular gear fixed to a second rotating shaft and made of an external gear meshing with the first non-circular gear. a first-order angular velocity modulation means comprising a circular gear; a third gear supported by the first non-circular gear and a third rotating shaft so as to be capable of transmitting power in one direction via a bearing with a one-way clutch function and meshing with the first non-circular gear; a second angular velocity modulation means using a non-circular gear; a fixed outer box having one end supporting a fourth rotating shaft via a bearing and the other end supporting a fifth rotating shaft via a bearing; and a fifth rotating shaft rotatably supported via a bearing, rotatably supporting the first non-circular gear via the bearing, and supporting and penetrating the second rotating shaft via the bearing. 1 frame, rotatably supported by the fourth and fifth rotating shafts via bearings and rotated relative to the first frame, supporting the third rotating shaft via bearings and passing through the frame; a second frame; a circular sun gear fixed to the fourth rotating shaft; a circular internal gear fixed to the outer box; a circular sun gear and a circular internal gear fixed to the second rotating shaft; an input circular planetary gear that meshes with the third rotating shaft, an output circular gear that is fixed to the fifth rotating shaft, and an output circular gear that meshes with the output circular gear that is fixed to the fifth rotating shaft; a torsionally elastic member installed between the frames, applying torsional torque to widen the relative rotation angle α of both frames, and resisting the output torque or the input torque; A plurality of sets of modulation means are provided, and the second non-circular gears of each set are fixed to the second rotating shaft with different phases, and each set has an exponential function by the first and second angular velocity modulation means. The angular velocity ratio of the third rotation axis to the second rotation axis is determined by the rotation angle α determined from the relative rotation position of the first frame and the second frame, and the rotation angle α determined from the relative rotation position of the first frame and the second frame. A continuously variable transmission characterized in that the non-circular gear pair is set to a value of an exponential function equation eK·α based on an angular velocity modulation coefficient K that can be set arbitrarily in advance and is unique to the non-circular gear pair.