A first steer tube has a first upper side and a first lower side. A second steer tube has a second upper side and a second lower side. A first axle mounting structure is configured to connect the first lower side to a first end of an axle assembly of a wheel. A second axle mounting structure is configured to connect the second lower side to a second end of the axle assembly. A first head tube assembly is disposed to the first lower side. A second head tube assembly is disposed to the second lower side. A support structure includes a first pivot connection and a second pivot connection. A first arm connects the first head tube assembly and the first pivot connection. A second arm connects the second head tube assembly and the second pivot connection.

A three-wheeled vehicle having a front wheel assembly attached to a chassis. The chassis includes a rotational control shaft having a rotational axis that is generally directed in a longitudinal direction of the vehicle. The rotational control shaft is integrated with or secured to the chassis in a non-rotational manner and passes through the front wheel assembly in a rotationally-free manner, such that the rotational control shaft can rotate about its rotational axis. The front wheel assembly includes one or more lean control motors, which are operably configured to rotate the rotational control shaft about its rotational axis thereby causing the chassis to lean from side to side to improve the handling ability of the vehicle. Some embodiments include a lean control system configured to automatically control the degree of rotation of the chassis.

A three-wheeled vehicle having a front wheel assembly attached to a chassis. The chassis includes a rotational control shaft having a rotational axis that is generally directed in a longitudinal direction of the vehicle. The rotational control shaft is integrated with or secured to the chassis in a non-rotational manner and passes through the front wheel assembly in a rotationally-free manner, such that the rotational control shaft can rotate about its rotational axis. The front wheel assembly includes one or more lean control motors, which are operably configured to rotate the rotational control shaft about its rotational axis thereby causing the chassis to lean from side to side to improve the handling ability of the vehicle. Some embodiments include a lean control system configured to automatically control the degree of rotation of the chassis.

A vehicle, in particular bicycle, with a frame, a handlebar connected to the frame rotatably about a steering axis, two front wheels and a rear wheel. In order to achieve a particularly pleasant driving behavior, the front wheels are rotatably mounted in front wheel hearings rigidly connected to the frame about front wheel axles, the rear wheel being mounted rotatably about a rear wheel axle in at least one rear wheel bearing, wherein at least one rear wheel bearing is rigidly connected to a swing arm which is pivotably connected to the frame about an articulation axis, the handlebar being coupled to the swing arm in this way that a movement of the handlebar about the steering axis causes an opposite movement of the swing arm about the articulation axis.

A steering stop for bicycle handlebars includes a first stop element. The stop element can be connected to a steer tube of a bicycle fork in particular in a clamping manner and includes two stops. A second stop element can be fixed on the bicycle frame and cooperates with the first stop element. For passing lines therethrough, which originate for example at a brake and/or gearshift unit, the first stop element includes at least one recess.

A front wheel steering mechanism in a center hub steering system. The mechanism comprising an inner wheel hub, an outer wheel hub, paired rolling bearings positioned between these inner and outer wheel hubs, a front shaft, a hub steering bracket attached to outside of the front shaft, and a hub steering shaft. The inner wheel hub is attached to the hub steering bracket so as to freely rotate about the hub steering shaft as an axial center. The outer wheel hub is configured of a left outer wheel hub and a right outer wheel hub. These left and right outer wheel hubs are rigidly coupled or are coupled via a plurality of wire spokes to a rim.

A resisting force change mechanism includes a first portion and a second portion configured to change a resisting force against relative displacement. The first portion is supported on any one of a first side member, a second side member, a first cross member, and a second cross member of a link mechanism where at least a portion thereof is superposed on one member at all times. The first portion is aligned with the one member and a steering shaft at the front. The second portion is supported on any other one of the body frame, the first side member, the second side member, the first cross member, and the second cross member that is displaced relative to the one member on which the first portion is supported. The second portion is located at a position where at least a portion thereof is superposed on the other member at all times.

A resisting force change mechanism includes a first portion and a second portion configured to change a resisting force against relative displacement. The first portion is supported on any one of a first side member, a second side member, a first cross member, and a second cross member of a link mechanism where at least a portion thereof is superposed on one member at all times. The first portion is aligned with the one member and a steering shaft at the front. The second portion is supported on any other one of the body frame, the first side member, the second side member, the first cross member, and the second cross member that is displaced relative to the one member on which the first portion is supported. The second portion is located at a position where at least a portion thereof is superposed on the other member at all times.

A balancing support system is for a saddle ride-type motor vehicle that includes a frame assembly including a head tube in a front portion of the frame assembly, is configured to assist a rider by balancing the motor vehicle, and includes: a steering shaft rotatably journaled about the head tube; a plurality of sensors that senses various dynamic parameters of the motor vehicle and includes a steering angle sensor; an actuator unit secured to a first portion of the frame assembly; a torque enhancer unit configured to provide a driving force from the actuator unit to the steering shaft and disposed above the head tube; and a balancing support-control unit that estimates an estimated steering angle based on inputs received from the plurality of sensors, compares the estimated steering angle with an actual steering angle, and triggers the actuator unit.

A self-balancing vehicle includes: a pedal base and a control rod, a lower portion of the control rod is provided with a steering shaft capable of rotating along with swinging of the control rod, and the steering shaft is rotatably connected with the pedal base. The self-balancing vehicle further includes: a transmission member and a mainboard box used to install a control mainboard; the transmission member is connected with the steering shaft, so as to rotate with the rotating of the steering shaft; the mainboard box is hinged in a cavity of the pedal base and located within a rotation interference range of the transmission member, and when the transmission member rotates, the mainboard box rotates or swings with interference of the transmission member. Through mechanical signal transmission, it can get rid of the limits of the Hall assembly, thus reducing the diversity requirements and costs of the control mainboard.