Vehicle body frame structure of straddle-type vehicle
US-2016264204-A1 · Sep 15, 2016 · US
US9855989B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9855989-B2 |
| Application number | US-201514665076-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2015 |
| Priority date | Mar 26, 2014 |
| Publication date | Jan 2, 2018 |
| Grant date | Jan 2, 2018 |
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A saddle type vehicle wherein restrictions in the weight and the layout are reduced for slimmer and lighter vehicle. Pivot plates are provided as separate bodies from seat rails. An upper end of a shock absorber is received by a cross member located between left and right seat rails. The cross member is a separate body from the seat rails. Both ends of the cross member are supported by recesses provided in the left and right seat rails at inner sides of the seat rails so as to face each other. The cross member is fastened to the seat rails by cross member fastening members. The seat rail is attached to a main frame at its one front-side end and to the pivot plate at its other front-side end. The main frame and the seat rail are fastened to each other in the vertical direction by a first fastening member.
Opening claim text (preview).
What is claimed is: 1. A saddle vehicle comprising: a head tube; a main frame extending rearwardly from the head tube; left and right seat rails adapted to support a seat, the seat rails being provided as separate bodies from the main frame and located rearwardly of the main frame; a swing arm adapted to support a rear wheel; pivot plates adapted to support a pivot serving as a center of swinging of the swing arm; and a shock absorber for suppressing vibrations attributable to a road surface; wherein the pivot plates are provided as separate bodies from the seat rails; an upper end of the shock absorber is received by a cross member located between the left and right seat rails; wherein the shock absorber is connected to the cross member by a shock absorber connecting member provided along the vehicle width direction; and the seat rail is provided therein with a tool insertion hole on an extension line of an axis of the shock absorber connecting member. 2. The saddle vehicle according to claim 1 , wherein the shock absorber is disposed in a position with an offset from a vehicle body center line toward a side from which the shock absorber connecting member is inserted. 3. The saddle vehicle according to claim 2 , wherein the cross member is provided, on outer sides in the vehicle width direction of its connecting portion for connection to the shock absorber, with left and right lightening holes which are different in size; the lightening holes are each provided with a rib on a diagonal line thereof; and a thickness of the rib of the larger lightening hole is greater than a thickness of the rib of the smaller lightening hole. 4. The saddle vehicle according to claim 1 , wherein cross member fastening members are mounted substantially in parallel to an axis of the shock absorber in a side view. 5. The saddle vehicle according to claim 1 , wherein the seat rail is attached to the main frame at one front-side end thereof and to the pivot plate at another front-side end thereof; and a lower end of the shock absorber is attached to an engine and the swing arm by way of a link member. 6. A saddle vehicle comprising: a head tube; a main frame extending rearwardly from the head tube; left and right seat rails adapted to support a seat, the seat rails being provided as separate bodies from the main frame and located rearwardly of the main frame; a swing arm adapted to support a rear wheel; pivot plates adapted to support a pivot serving as a center of swinging of the swing arm; a shock absorber for suppressing vibrations attributable to a road surface; wherein an upper end of the shock absorber is received by a cross member located between the left and right seat rails; and the cross member is a separate body from the seat rails, both ends of the cross member being supported by recesses which are provided in the left and right seat rails at inner sides of the seat rails so as to face each other, and the cross member being fastened to the seat rails by cross member fastening members; wherein the shock absorber is connected to the cross member by a shock absorber connecting member provided along the vehicle width direction; and the seat rail is provided therein with a tool insertion hole on an extension line of an axis of the shock absorber connecting member. 7. The saddle vehicle according to claim 6 , wherein the seat rails are each produced using a mold having a mold parting direction that coincides with a vehicle width direction; and the cross member is produced using a mold having a mold parting direction that coincides with a vertical direction or in a longitudinal vehicle direction. 8. The saddle vehicle according to claim 6 , wherein the cross member fastening members are mounted substantially in parallel to an axis of the shock absorber in a side view. 9. A saddle vehicle comprising: a head tube; a main frame extending rearwardly from the head tube; seat rails adapted to support a seat, said seat rails being provided as separate bodies from the main frame and located rearwardly of the main frame; a swing arm adapted to support a rear wheel; pivot plates adapted to support a pivot serving as a center of swinging of the swing arm; and a shock absorber for suppressing vibrations attributable to a road surface; wherein the pivot plates are provided as separate bodies from the seat rails; each seat rail is attached to the main frame at one front-side end thereof and to the pivot plate at another front-side end thereof; the main frame and the seat rail are provided with a first fastening portion where they are fastened to each other in a vertical direction by a first fastening member; and the pivot plate and the seat rail are provided with a second fastening portion where they are fastened to each other along a vehicle width direction by a second fastening member; wherein either the first fastening portion or the second fastening portion is provided with a knock pin. 10. The saddle vehicle according to claim 9 , wherein an upper end of the shock absorber is connected to the seat rail by an upper end connecting portion; and the first fastening portion, the second fastening portion, and the upper end connecting portion are arranged in this order from a front side of the vehicle, in a side view. 11. The saddle vehicle according to claim 10 , wherein the upper end connecting portion for the shock absorber is provided on a cross member located between the left and right seat rails; and the cross member is a separate body from the seat rails, has both its ends supported by recesses which are provided in the left and right seat rails at inner sides of the seat rails so as to face each other, and is fastened to the seat rail by a cross member fastening member. 12. The saddle vehicle according to claim 11 , wherein the seat rail is produced using a mold having a mold parting direction that coincides with the vehicle width direction; and the cross member is produced using a mold having a mold parting direction that coincides with the vertical direction. 13. The saddle vehicle according to claim 10 , wherein the seat rail is Y-shaped in a side view, and the first fastening portion and the second fastening portion are provided at end portions of arms of the Y-shape. 14. The saddle vehicle according to claim 9 , wherein the knock pin is provided in the first fastening portion. 15. The saddle vehicle according to claim 9 , wherein the upper end connecting portion for the shock absorber is provided on a cross member located between the left and right seat rails; and the cross member is a separate body from the seat rails, has both its ends supported by recesses which are provided in the left and right seat rails at inner sides of the seat rails so as to face each other, and is fastened to the seat rail by a cross member fastening member. 16. The saddle vehicle according to claim 9 , wherein the seat rail is Y-shaped in a side view, and the first fastening portion and the second fastening portion are provided at end portions of arms of the Y-shape. 17. The saddle vehicle according to claim 9 , wherein the first fastening member is configured so that fastening at the first fastening portion is made obliquely from an outside toward inside in the vehicle width direction, as viewed from a front side of the vehicle.
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