Abstract: Disclosed is a spanner tool for mounting or dismounting components, which comprises a control piece (2), a connecting piece (1) and a rotating piece (3). The connecting piece (1) is hinged with one end of the control piece (2) and one end of the rotating piece (3) respectively. An angle ? formed between the control piece (2) and the connecting piece (1) is less than an angle ? formed between the rotating piece (3) and the connecting piece (1) when the control piece (2) and the rotating piece (3) respectively rotate to limit positions at different sides of the connecting piece (1). The spanner tool is practical and reliable. The spanner tool is convenient and rapid-in-use. The spanner tool can be folded for portability when not in use. Additionally, locking tightness of the tool can be adjusted by adjusting a nut.

Abstract: A reinforcing and locking device for vehicle frame includes a reinforcing component (2), a connecting component and an eccentric locking component, the vehicle frame comprises a beam (1) and a seat tube (3). The beam (1) can be folded into at least two segments (11, 12). A hinge axle (81), through which various segments of the vehicle beam (1) are hinged with each other, is provided vertically. The reinforcing component (2) is connected to the beam (1) and the seat tube (3). The seat tube (3) is provided with a connecting component. A front end of the reinforcing component (2) is hinged with a front segment (11) of the beam (1), and a rear end of the reinforcing component (2) is connected with the seat tube (3) through the connecting component. The reinforcing and locking device for vehicle frame has good stability, simple structure and low cost.

Abstract: Disclosed is a spanner tool for mounting or dismounting components, which comprises a control piece (2), a connecting piece (1) and a rotating piece (3). The connecting piece (1) is hinged with one end of the control piece (2) and one end of the rotating piece (3) respectively. An angle ? formed between the control piece (2) and the connecting piece (1) is less than an angle ? formed between the rotating piece (3) and the connecting piece (1) when the control piece (2) and the rotating piece (3) respectively rotate to limit positions at different sides of the connecting piece (1). The spanner tool is practical and reliable. During use, a user does not need to swing his/her arm and only needs to rotate his/her wrist to operate the spanner tool, so the spanner tool is convenient and rapid-in-use. The spanner tool can be folded for portability when not in use. Additionally, locking tightness of the tool can be adjusted by adjusting a nut.

Abstract: An adjusting mechanism for the handle position of a bicycle includes an upper cover (2) and a lower cover (3), which clamp the handle, and a handle vertical pipe (5) fastened on the front fork by a retaining mechanism. One side of the upper cover and one side of the lower cover for clamping the handle are connected with each other, and the other sides can be interlocked by an independent retaining mechanism. The top of the handle vertical pipe is provided with steps (6), and the lower cover is sleeved outside the handle vertical pipe and arranged below the steps at the top of the handle vertical pipe.

Abstract: A reinforcing and locking device for vehicle frame includes a reinforcing component (2), a connecting component and a locking component, the vehicle frame comprises a beam (1) and a seat tube (3). The beam (1) can be folded into at least two segments (11, 12). A hinge axle (81), through which various segments of the vehicle beam (1) are hinged with each other, is provided vertically. The reinforcing component (2) is connected to the beam (1) and the seat tube (3). The seat tube (3) is provided with a connecting component. A front end of the reinforcing component (2) is hinged with a front segment (11) of the beam (1), and a rear end of the reinforcing component (2) is connected with the seat tube (3) through the connecting component.

Abstract: An adjusting mechanism for the handle position of a bicycle includes an upper cover (2) and a lower cover (3), which clamp the handle, and a handle vertical pipe (5) fastened on the front fork by a retaining mechanism. One side of the upper cover and one side of the lower cover for clamping the handle are connected with each other, and the other sides can be interlocked by an independent retaining mechanism. The top of the handle vertical pipe is provided with steps (6), and the lower cover is sleeved outside the handle vertical pipe and arranged below the steps at the top of the handle vertical pipe.