摘要:
A vehicle steering system (1) including a transmission ratio variable mechanism (5) that has a first shaft (11) connected to a steering member and a second shaft (12) connected to a turning mechanism, coupled coaxially to each other, and a transmission ratio variable mechanism motor (23) disposed coaxially with the first and second shafts (11, 12) for driving the transmission ratio variable mechanism (5). The transmission ratio variable mechanism motor (23) includes a tubular rotor (231), and an accommodation space (90) is defined on the inner side in the radial direction of the rotor core (85) of the tubular rotor (231). At least one of sensors (44) is disposed inside the accommodation space (90). The entire length of the vehicle steering system can be shortened.
摘要:
A motor vehicle steering system (1) comprises a transmission ratio variable mechanism (5) capable of changing a transmission ratio (θ2/θ1), and a steering-assist-force imparting mechanism (19). The transmission ratio variable mechanism (5) is provided with an input member (20) and an output member (22) capable of rotation about a first axis (A), an inner race (391) for differentially rotatably coupling to each member (20, 22), an outer race (392) for rotatably supporting the inner race(391) via a rolling element (393), and an electric motor (23) for rotation-driving the outer race (392). A second axis (B) that is a center line of the inner race (391) and the outer race (392) is inclined relative to the first axis (A). The motor (23) corotatably holds the outer race (392), and has a rotor (231) capable of rotation around the first axis (A). The rotor (231) is in a cylindrical form to surround the outer race (392).
摘要:
A variable transmission ratio mechanism (5) comprises: an input member (20; 20A) capable of rotating around a first axis (A1); and an intermediate member (391; 391A) that allows the differential rotation of the output member (22; 22A) . The intermediate member (391; 391A) is capable of rotating around a second axis (A2) that is slanted relative to the first axis (A1). On first and second power transmission surfaces (71, 73) of the intermediate member (391; 391A), corresponding first and second engaging sections (66, 69; 66A, 69A) are respectively arranged according to corresponding first and second arrangement pitch circles (X1, Y1) centered on the second axis (A2). On corresponding first and second engagement circles (Y1, Y2) centered on the first axis (A1), the first and second engaging sections (66, 69) are respectively engageable with corresponding first and second engageable sections (65, 68; 65A, 68A). The diameter (D1) of the first arrangement pitch circle (X1) differs from the diameter (D2) of the second arrangement pitch circle (X2).
摘要:
A transmission ratio variable mechanism (5) is provided with: an input member (20) and an output member (22) capable of rotation about a first axis (A); an inner race (391) for differentially rotatably coupling to each member (20, 22); an outer race (392) for rotatably supporting the inner race (391) via a rolling element 393; and a transmission ratio variable mechanism-use electric motor (23) for rotation-driving the outer race (392). A second axis (B) which is a center line of the inner race (391) and the outer race (392) is inclined to the first axis (A). A first concave-convex engaging section (64) for engaging one side end surface (71) of the inner race (391) and a power transmission surface of the input member (20) corresponding to the one end surface (71) are arranged. There is provided a second concave-convex engaging section (67) for engaging the other end surface (73) of the inner race (391) and a power transmission surface of the output member (22).