Frame structure for saddle-ride type vehicle
AssigneeHonda Motor Co., Ltd.
InventorsTomoyuki Maruyama, Hiroyuki Shinmura, Masashi Nagayama
Life of this patent
Estimating the term…
Abstract
A frame structure for a saddle-ride type vehicle includes a body frame having a head pipe, down tubes, seat rails and upper tubes and a unit swing power unit swingably supported by the body frame. The seat rails have front ends joined to downwardly extending portions of the down tubes. The down tube has a second bending portion formed at the rear end of the horizontal extending portion and an obliquely upwardly extending portion extending rearwardly and upwardly at a position behind the second bending portion. The obliquely upwardly extending portion has a rear end joined to the seat rail. The power unit support portion is formed behind the bending portion.
Claims20
A frame structure for a saddle-ride vehicle comprising:
- a body frame including:
- a head pipe pivotally supporting a steering system;
- down tubes configured as a left and right pair, the down tube having a downwardly extending portion having a front end joined to the head pipe and extending rearwardly and downwardly, a first bending portion bending rearwardly at a lower end of the downwardly extending portion, and a horizontal extending portion extending rearwardly and generally horizontally from the first bending portion;
- seat rails configured as a left and right pair, disposed above the down tubes, said seat rails having respective front ends joined to the corresponding down tubes and extending rearwardly and upwardly;
- and
- upper tubes configured as a left and right pair, having respective front ends joined to the head pipe, disposed above the down tubes and having respective rear ends joined to corresponding intermediate portions of the seat rails;
- and
- a unit swing power unit swingably supported by the body frame and having a swinging center on a lower portion side thereof;
- wherein the seat rails are joined at front ends thereof to the corresponding downwardly extending portions of the down tubes;
- each of the down tubes has a second bending portion formed at a rear end of the horizontally extending portions and an obliquely upwardly extending portion extending rearwardly and upwardly at a position rearwardly of the second bending portion, and the obliquely upwardly extending portion has a rear end joined to a corresponding one of the seat rails;
- and
- power unit support portions supporting the unit swing power unit are each formed behind the second bending portion.
A frame structure for a saddle-ride vehicle comprising:
- a body frame including:
- a head pipe pivotally supporting a handlebar;
- left and right down tubes having a downwardly extending portion with a front end joined to the head pipe and extending rearwardly and downwardly, a first bending portion bending rearwardly at a lower end of the downwardly extending portion, and a horizontal extending portion extending rearwardly and generally horizontally from the first bending portion;
- left and right seat rails disposed above the down tubes and having respective front ends joined to the corresponding down tubes and extending rearwardly and upwardly;
- and
- left and right upper tubes having respective front ends joined to the head pipe, said left and right upper tubes being disposed above the down tubes and having respective rear ends joined to corresponding intermediate portions of the seat rails;
- and
- a unit swing power unit swingably supported by the body frame and having a swinging center on a lower portion side thereof;
- wherein the seat rails are joined at front ends thereof to the corresponding downwardly extending portions of the down tubes;
- a second bending portion formed on each of the down tubes, said second bending portion being formed at a rear end of the horizontally extending portions and an obliquely upwardly extending portion extending rearwardly and upwardly at a position rearwardly of the second bending portion, and the obliquely upwardly extending portion has a rear end joined to a corresponding one of the seat rails;
- and
- power unit support portions supporting the unit swing power unit are each formed behind the second bending portion.
Dependencies are inferred from the claim text.