Provided is a seat frame for a saddled vehicle capable of increasing the coupling rigidity at the separable rear end and having aesthetic aspect. A seat frame of a vehicle body frame includes a front part fixed to the vehicle body frame and a rear part that can be disconnected from the front part, the front part and the rear part being separated at a rear part of the vehicle body. The front part and the rear part are fixed with a fastening member that engages from the inside of the vehicle width direction. The front part has a hollow rear end, and the rear part includes a solid engagement part at the front end. The fastening member as a bolt penetrates through the lateral wall at the rear end to be screwed with the engagement part inserted into the rear end. The rear part includes the engagement part and a pipe member to be connected to a rear part of the engagement part.

A motorcycle having a body frame reinforcing structure includes a right and left pair of down frames supporting an engine in a body frame. The right and left down frames are coupled using the cross member. The cross member includes a plurality of mounted portions mounted to the right and left respective down frames.

A motorcycle having a body frame reinforcing structure includes a right and left pair of down frames supporting an engine in a body frame. The right and left down frames are coupled using the cross member. The cross member includes a plurality of mounted portions mounted to the right and left respective down frames.

A body frame of a two-wheeled motor vehicle includes a first frame extending rearward from a head pipe, a second frame disposed beneath the first frame with a gap there between, a third frame disposed beneath the second frame with a gap there between, a plate-shaped first reinforcing member provided between the first frame and the second frame, and a plate-shaped second reinforcing member provided between the second frame and the third frame, and the first reinforcing member and the second reinforcing member are formed so that external shapes thereof are connected. Thus, it is possible to provide a body frame for a two-wheeled motor vehicle that contributes to cutting the number of components and increasing the stiffness.

The present invention discloses a reinforced bicycle or vehicle frame comprising: a head tube portion for engaging a front fork and wheel; a bottom bracket portion for engaging a rear fork and wheel; a seat tube portion. Each of the head tube portion, the bottom bracket portion, and the seat tube portion being hollow, allowing for the installation of a frame reinforcement assembly to a hollow interior of each of the hollow head tube portion, the bottom bracket portion, and the seat tube portion or entire frame. The frame reinforcement assembly includes a plurality of ribs structure adapted to be approximately be perpendicular to each other. The plurality of ribs structure formed in the hollow interior and being composite material to provide stiffness to the hollow interior of each of the hollow head tube, the bottom bracket, and the seat tube portions.

The present invention discloses a reinforced bicycle or vehicle frame comprising: a head tube portion for engaging a front fork and wheel; a bottom bracket portion for engaging a rear fork and wheel; a seat tube portion. Each of the head tube portion, the bottom bracket portion, and the seat tube portion being hollow, allowing for the installation of a frame reinforcement assembly to a hollow interior of each of the hollow head tube portion, the bottom bracket portion, and the seat tube portion or entire frame. The frame reinforcement assembly includes a plurality of ribs structure adapted to be approximately be perpendicular to each other. The plurality of ribs structure formed in the hollow interior and being composite material to provide stiffness to the hollow interior of each of the hollow head tube, the bottom bracket, and the seat tube portions.

The present disclosure relates to a reinforced pivot pin receptacle, specifically made of plastic or other non-metal material and a method for adhering planar element to a cardboard surface, specifically wherein the planar element is made of plastic.

A folding bicycle includes a first frame section; a second frame section movably mounted to the first frame section so that the first and second frame sections may be moved relative to each other from an unfolded position to a folded position; a front wheel mounted to the first frame section; a rear wheel mounted to the second frame section; a chainset mounted to the first frame section and including one or more chain rings; a rear hub mounted to the second frame section; a chain extending around and between the one or more chain rings and the rear hub; and a chain retainer fixedly mounted to the first frame section and defining a gap between the chainset and the chain retainer to maintain engagement between the chain and the chainset when the folding bicycle is in the folded position.

A folding bicycle includes a first frame section; a second frame section movably mounted to the first frame section so that the first and second frame sections may be moved relative to each other from an unfolded position to a folded position; a front wheel mounted to the first frame section; a rear wheel mounted to the second frame section; a chainset mounted to the first frame section and including one or more chain rings; a rear hub mounted to the second frame section; a chain extending around and between the one or more chain rings and the rear hub; and a chain retainer fixedly mounted to the first frame section and defining a gap between the chainset and the chain retainer to maintain engagement between the chain and the chainset when the folding bicycle is in the folded position.

Method for producing a component system having a first component with a first component portion and a second component with a second component portion, including the following steps: connecting, in particular welding or soldering, the first component portion, which consists of an aluminum alloy, to the second component portion, which in particular consists of a naturally aged aluminum alloy, a copper alloy or an iron alloy, in particular a steel alloy, so as to form a connection seam; artificially aging the connection seam such that the yield strength of the connection seam is above the yield strength of the first component portion and/or of the second component portion; and deforming, in particular deep-drawing and/or stretch-drawing, the component system.