Straddle type vehicle

Patent metadata

Field	Value
Publication number	US-10160506-B2
Application number	US-201615235454-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 31, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

To suppress intake noise and secure a quiet ride on a straddle type vehicle wherein a box-shaped structure includes an air cleaner box connected to an engine. In addition, exhaust air from the radiator disposed in the vicinity of the box-shaped structure is prevented from hitting a leg portion of a rider. A main frame is provided as a separate body from a head box so as to support a power unit and a front two-wheeled suspension device. The head box is supported on the main frame due to the fact that an air cleaner box is fixed on the main frame through a fixing member. A guide portion is formed on the air cleaner box so as to guide the exhaust wind from a radiator to the lower direction.

First claim

What is claimed is:

1. A straddle vehicle comprising:
a head box including an inserted head pipe into which a handle steering shaft is inserted and an air cleaner box which sucks and filters a flow of air from a front direction of the vehicle;
a main frame provided as a separate body from said head box, a power unit being directly connected to the main frame;
a front wheel suspension device for axially supporting a front wheel;
said air cleaner box is fixed on said main frame through a fixing member for allowing said head box to be supported directly on the main frame, said air cleaner box being disposed in front of a seat supported directly on the main frame and including an intake air inlet formed on a front side thereof; and
a radiator for cooling the power unit, said radiator being positioned in front of said air cleaner box,
wherein a portion of an exhaust air from said radiator is supplied to the intake air inlet formed on the front side of the air cleaner box and a front surface of said air cleaner box forming a guide portion for directing a remaining portion of said exhaust air downwardly in a rearward direction.

2. The straddle vehicle according to claim 1 , and further including a straightening plate for guiding an air stream of the exhaust air from said radiator, said straightening plate being provided in front of said guide portion.

3. The straddle vehicle according to claim 2 , and further including an intake duct connected to said head box and opened to the front direction of the vehicle, and an air guiding passage forming portion is positioned adjacent to an intake passage formed by said intake duct and forms an air guiding passage relative to said radiator.

4. The straddle vehicle according to claim 2 , wherein said power unit includes an engine including a cylinder on both sides of a crank case, said main frame has a right and left pair frame main bodies, and both frame main bodies, respectively, extend so as to cross from above said cylinders to a rear direction and to bend in a side view.

5. The straddle vehicle according to claim 1 , and further including an intake duct connected to said head box and opened to the front direction of the vehicle, and an air guiding passage forming portion is positioned adjacent to an intake passage formed by the intake duct and forms an air guiding passage relative to said radiator.

6. The straddle vehicle according to claim 5 , wherein said power unit includes an engine including a cylinder on both sides of a crank case, said main frame has a right and left pair frame main bodies, and both frame main bodies, respectively, extend so as to cross from above said cylinders to a rear direction and to bend in a side view.

7. The straddle vehicle according to claim 1 , wherein said power unit includes an engine including a cylinder on both sides of a crank case, said main frame has a right and left pair frame main bodies, and both frame main bodies, respectively, extend so as to cross from above said cylinders to a rear direction and to bend in a side view.

8. The straddle vehicle according to claim 7 , wherein said air cleaner box includes right and left flow passage forming portions, and said flow passage forming portions are respectively supported on said frame main bodies.

9. A head box for a straddle vehicle comprising:
an air cleaner box for sucking and filtering a flow of air from a front direction of the straddle vehicle;
a main frame provided as a separate body from said head box;
a power unit directly connected to the main frame; and
a front wheel suspension device for axially supporting a front wheel;
said air cleaner box is fixed on said main frame through a fixing member for supporting said head box directly on the main frame, said air cleaner box being disposed in front of a seat supported directly on the main frame and including an intake air inlet formed on a front side thereof; and
a radiator for cooling the power unit, said radiator being positioned in front of said air cleaner box;
wherein a portion of an exhaust air from said radiator is supplied to the intake air inlet formed on the front side of the air cleaner box and a front surface of said air cleaner box forming a guide portion for directing a remaining portion of said exhaust air downwardly in a rearward direction.

10. The head box for a straddle vehicle according to claim 9 , and further including a straightening plate for guiding an air stream of the exhaust air from said radiator, said straightening plate being provided in front of said guide portion.

11. The head box for a straddle vehicle according to claim 9 , and further including an intake duct connected to said head box and opened to the front direction of the vehicle, and an air guiding passage forming portion is positioned adjacent to an intake passage formed by the intake duct and forms the air guiding passage relative to said radiator.

12. The head box for a straddle vehicle according to claim 9 , wherein said power unit includes an engine including a cylinder on both sides of a crank case, said main frame has a right and left pair frame main bodies, and both frame main bodies, respectively, extend so as to cross from above said cylinders to a rear direction and to bend in a side view.

Assignees

• Honda Motor Co Ltd

Inventors

• Yokoyama Yuichi

Classifications

• B62K11/04

  characterised by the engine being between front and rear wheels · CPC title

• B60K11/02

  with liquid cooling · CPC title

• B60K13/02

  concerning intake · CPC title

• B62J17/02 Primary

  shielding only the rider's front · CPC title

• B62K5/027

  Motorcycles with three wheels (specially adapted for disabled riders B62K5/023) · CPC title