The present disclosure belongs to the technical field of two-wheel vehicles. A two-wheel automatic balance reset mechanism comprises a balance bar arranged between a frame and each front wheel support, the balance bar comprises a piston cylinder and a piston rod, the piston rod is movably arranged in a piston chamber of the piston cylinder, two ends of the piston chamber are mutually interconnected to form a first channel, a main control valve is arranged on the first channel and divides the first channel into a medium intake end and a backflow end, a medium tank is arranged at the backflow end, a pump is arranged at the medium intake end, and the pump is interconnected with the medium tank. A system comprises a main control module and an acquisition module, and the acquisition module comprises a balance sensor arranged on the frame and a speed sensor.

A bicycle comprises a front wheel; a rear wheel; a frame comprising a main frame portion and an articulating frame portion, the articulating frame portion comprising: a lower arm pivotally supported at a first axis by the main frame portion; an upper frame link pivotally supported at a second axis by the main frame portion; an upper arm pivotally coupled to the upper frame link at a third axis; an upper shock link pivotally coupled to the upper frame link and the upper arm at the third axis; and a lower shock link pivotally coupled to the main frame portion and the lower arm at the first axis; and a shock absorber having a first end pivotally supported at a fourth axis by the main frame portion, and a second end pivotally supported at a fifth axis by the upper shock link and the lower shock link.

A bicycle comprises a front wheel; a rear wheel; a frame comprising a main frame portion and an articulating frame portion, the articulating frame portion comprising: a lower arm pivotally supported at a first axis by the main frame portion; an upper frame link pivotally supported at a second axis by the main frame portion; an upper arm pivotally coupled to the upper frame link at a third axis; an upper shock link pivotally coupled to the upper frame link and the upper arm at the third axis; and a lower shock link pivotally coupled to the main frame portion and the lower arm at the first axis; and a shock absorber having a first end pivotally supported at a fourth axis by the main frame portion, and a second end pivotally supported at a fifth axis by the upper shock link and the lower shock link.

A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

Provided are a new antenna, a bicycle including the new antenna, a display apparatus including the new antenna, and an unmanned aircraft including the new antenna. An antenna includes a first conductor, a second conductor facing the first conductor in a first direction, a third conductor, a fourth conductor, and a feeding line electromagnetically connected to the third conductor. The third conductor is located between the first conductor and the second conductor, apart from the first conductor and the second conductor, and extends in the first direction. The fourth conductor is connected to the first conductor and the second conductor and extends in the first direction. The first conductor and the second conductor are capacitively connected via the third conductor. The antenna is disposed in a bicycle component of a bicycle such that the fourth conductor faces the bicycle component.

A structure for integrating a down tube of an electric bicycle with a battery box is provided. The down tube has a tube body and two fixed bases arranged in the inner cavity of the tube body. A receiving cavity is bounded by the two fixed bases and the tube body. The receiving cavity is provided with an access opening on the outer side surface of the tube body. A long side of the access opening extends inward to form an elongated protruding rib. A positioning column is provided on each of two opposite sides of the two fixed bases. The battery box has a box body and two bearing bases that are installed on the outer sides of the two ends of the box body, respectively. A first dimple is provided on the outer side of the box body in a concave manner.

This invention relates to polygonal frame structures made from anisotropic materials, and methods for their construction. The polygonal frame structures include at least one frame member that is constructed as a torsion box. The torsion box is constructed with layers of anisotropic materials, resulting in a lightweight, torsionally stiff polygonal frame. Natural and/or man-made anisotropic materials may be used. Wood may be used as a natural anisotropic material. The invention is applicable to bicycles and other vehicles, as well as other products, where frame structures having light weight and torsional stiffness are advantageous.

This invention relates to polygonal frame structures made from anisotropic materials, and methods for their construction. The polygonal frame structures include at least one frame member that is constructed as a torsion box. The torsion box is constructed with layers of anisotropic materials, resulting in a lightweight, torsionally stiff polygonal frame. Natural and/or man-made anisotropic materials may be used. Wood may be used as a natural anisotropic material. The invention is applicable to bicycles and other vehicles, as well as other products, where frame structures having light weight and torsional stiffness are advantageous.

The invention relates to a single-track land vehicle, which is designed, for example, as a bicycle (1), electric bike or electric scooter and has a vehicle frame (2) and a vehicle fork (5), which (5) has a fork steerer tube (4), which fork steerer tube (4) is mounted pivotably in a head tube (3) of the vehicle frame (2), wherein it is possible by means of a pivoting-angle brake or limiter (6) to at least decelerate the pivoting in of the vehicle fork (5) relative to the vehicle frame (2) and/or to define the maximum pivoting-in angle. For the single-track land vehicle according to the invention, it is characteristic that the pivoting-angle brake or limiter (6) has a tension element (7), which (7) is connected to the vehicle frame (2) via a holding element (8) held in the interior of the vehicle frame (2) or held on the vehicle frame, and that a holding counter-element (9) is provided on the tension element (7) at a distance from the holding element (8), which (9) rests or strikes against the vehicle fork (5) or against the fork steerer tube (4) when the pivoting-angle brake or limiter is activated (cf. FIG. 5).

The invention relates to a single-track land vehicle, which is designed, for example, as a bicycle (1), electric bike or electric scooter and has a vehicle frame (2) and a vehicle fork (5), which (5) has a fork steerer tube (4), which fork steerer tube (4) is mounted pivotably in a head tube (3) of the vehicle frame (2), wherein it is possible by means of a pivoting-angle brake or limiter (6) to at least decelerate the pivoting in of the vehicle fork (5) relative to the vehicle frame (2) and/or to define the maximum pivoting-in angle. For the single-track land vehicle according to the invention, it is characteristic that the pivoting-angle brake or limiter (6) has a tension element (7), which (7) is connected to the vehicle frame (2) via a holding element (8) held in the interior of the vehicle frame (2) or held on the vehicle frame, and that a holding counter-element (9) is provided on the tension element (7) at a distance from the holding element (8), which (9) rests or strikes against the vehicle fork (5) or against the fork steerer tube (4) when the pivoting-angle brake or limiter is activated (cf. FIG. 5).