WO2015068190A1 - 鞍乗型車両の車体フレーム構造 - Google Patents
鞍乗型車両の車体フレーム構造 Download PDFInfo
- Publication number
- WO2015068190A1 WO2015068190A1 PCT/JP2013/006570 JP2013006570W WO2015068190A1 WO 2015068190 A1 WO2015068190 A1 WO 2015068190A1 JP 2013006570 W JP2013006570 W JP 2013006570W WO 2015068190 A1 WO2015068190 A1 WO 2015068190A1
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- WIPO (PCT)
- Prior art keywords
- frame
- vehicle
- head pipe
- width direction
- vehicle width
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J37/00—Arrangements of fuel supply lines, taps, or the like, on motor cycles or engine-assisted cycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/18—Connections between forks and handlebars or handlebar stems
- B62K21/20—Connections between forks and handlebars or handlebar stems resilient
Definitions
- the present invention relates to a body frame structure of a straddle-type vehicle such as a motorcycle.
- the saddle riding type vehicle has a main frame that is separated from the head pipe in the vehicle width direction and extends rearward, and various components such as a fuel tank are assembled to the main frame.
- the main frame may be formed in a trellis shape (lattice shape) by connecting a plurality of rod-shaped frames.
- an object of the present invention is to improve the degree of freedom in designing the body frame while maintaining the steering operability.
- a straddle-type vehicle body frame structure includes a head pipe through which a steering shaft connected to a handle is inserted, and a pair of main frames that are separated from the head pipe in the vehicle width direction and extend rearward.
- Each main frame has an upper frame extending rearward from the upper part of the head pipe and a lower frame extending rearward from the lower part of the head pipe, and the upper frame and the lower frame in the vehicle height direction.
- a retreat space that is recessed inward in the vehicle width direction from the end of the steering wheel in the turning operation state is formed.
- the handle in the turning operation state, the fist holding the handle, and the upper frame are prevented from interfering with each other, and options for the extending directions of the upper frame and the lower frame can be increased. Therefore, the frame can be arranged also on the handle, and the design freedom of the body frame is improved.
- the upper frame may pass through a connection portion with the head pipe, protrude upward from a virtual plane perpendicular to the rotation axis of the steering shaft, and extend rearward.
- the lower surface of the upper frame can be positioned upward and the space below the upper frame can be enlarged.
- equipment layout is improved by using this space to arrange equipment.
- a connecting frame that connects the upper frame to the lower frame in the vehicle length direction may be provided, and the connecting frame may be disposed at a position avoiding the retreat space.
- connection frame and the handle it is possible to prevent the connection frame and the handle from interfering with each other.
- the upper frame may be arranged at a portion adjacent to the retraction space and closer to the center in the vehicle width direction than the lower frame.
- the main frame includes a trellis part continuous from the head pipe and a non-trellis part extending rearward from the trellis part.
- the trellis part includes the upper frame, the lower frame, the upper frame, and the lower frame.
- the non-trellis part may be formed in a linear shape continuously from the upper frame.
- the non-trellis part can be arranged upward, and the equipment can be easily arranged.
- the equipment that is arranged below the non-trellis part and protrudes outward in the vehicle width direction from the non-trellis part may be arranged.
- the equipment can be arranged using the non-trellis part arranged above.
- the equipment may be an intake duct arranged to extend from the outside of the main frame to the inside of the main frame.
- the duct is easy to arrange because the upper frame is located above.
- the equipment may be a supercharger unit arranged below the upper frame and partially protruding from the inside of the main frame to the outside of the main frame.
- One of the upper frame and the lower frame has its end positioned forward of the other end, rearward of the one end, and between the other of the upper frame and the lower frame.
- An auxiliary device may be accommodated between the vehicle width directions.
- a straddle-type vehicle body frame structure includes a head pipe through which a steering shaft connected to a handle is inserted, and a pair of main frames that are separated from the head pipe in the vehicle width direction and extend rearward.
- the upper surface of the main frame passes through a connection portion with the head pipe as it advances from the front end to the rear and protrudes upward from a virtual plane perpendicular to the rotation axis of the head pipe.
- a retreat space that is recessed inward in the vehicle width direction from the end of the steering wheel in the turning operation state is formed in the outer portion in the width direction.
- FIG. 1 is a left side view of a motorcycle shown as an example of a straddle-type vehicle to which a vehicle body frame structure according to an embodiment is applied. It is a perspective view of a head pipe and a main frame. It is a top view of the vehicle body frame structure shown in FIG.
- the direction is based on the direction seen from the rider of the saddle riding type vehicle to which the body frame structure is applied.
- the vehicle height direction, the vehicle length direction, and the vehicle width direction correspond to the vertical direction, the front-rear direction, and the left-right direction.
- the vehicle width direction outer side and the outer side are a side and a direction away from the vehicle width center.
- the inner side and the inner side in the vehicle width direction are the side and direction approaching the vehicle width center.
- the front wheel 101 is supported by the vehicle body frame 1 through a steering system component such as the steering shaft 105 so as to be able to turn around the steering axis A1.
- the steering axis A1 extends substantially upward and tilts backward so as to form a caster angle.
- the steering system component of this embodiment includes a front fork 106, and the front fork 106 rotatably supports the front axle 101a of the front wheel 101 at its lower end.
- the rear wheel 102 is supported by the vehicle body frame 1 via the swing arm 107 so as to be swingable around the swing axis A2.
- the swing axis A2 extends in the vehicle width direction.
- the rear wheel 102 is disposed behind the vehicle body frame 1.
- the swing arm 107 is swingably supported by the vehicle body frame 1 at the front end portion thereof, and the rear axle 102a of the rear wheel 102 is rotatably supported at the rear end portion thereof.
- a rear suspension 108 is bridged between the vehicle body frame 1 and the swing arm 107.
- the rear wheel 102 is a driving wheel.
- the drive unit 103 has a drive source that generates a rotation output, and the power transmission mechanism 104 transmits the rotation output from the drive source to the rear axle 102a. As a result, the rear wheel 102 is rotationally driven with the rotational output generated by the drive source.
- a casing member 103 a of the drive unit 103 is supported by the body frame 1.
- the drive unit 103 includes an engine 110 as an example of a drive source, and includes a crankcase 111 and a cylinder assembly 112 as an example of a casing member 103a.
- the cylinder assembly 112 includes a cylinder block 113, a cylinder head 114, and a head cover 115.
- the crankcase 111 rotatably supports the crankshaft.
- the cylinder assembly 112 accommodates a piston and a valve mechanism to form a combustion chamber.
- the cylinder block 113 is coupled to the crankcase 112 and accommodates the piston so as to reciprocate in the cylinder axis A3 direction.
- the cylinder head 114 is coupled to the cylinder block 113 on the side opposite to the crankcase 112 in the cylinder axis A3 direction to form a combustion chamber.
- the head cover 115 covers the cylinder head 114 on the side opposite to the cylinder block 113 in the cylinder axis A3 direction, and accommodates the valve mechanism together with the cylinder head 114.
- the engine 110 is a horizontal type, and the crankshaft extends in the vehicle width direction.
- the engine 110 is L-shaped, and a single cylinder assembly 112 is coupled to the front upper portion of the crankcase 111, and the cylinder axis A3 extends upward (in detail, slightly tilted forward) from the front upper portion.
- the engine 110 is a parallel multi-cylinder type, and the cylinder axis A3 of each cylinder overlaps in a side view, and the cylinder assembly 112 is relatively long in the vehicle width direction.
- the drive unit 103 has a transmission as an example of a device that is unitized with the drive source and transmits the rotational output from the drive source to the rear wheels 102.
- the crankcase 111 protrudes rearward when viewed from the cylinder assembly 112, and forms a transmission case 117 that houses the transmission at the rear part.
- the transmission changes the rotational output from the drive source and outputs it to the transmission output shaft 118.
- One end (for example, the left end) in the vehicle width direction of the transmission output shaft 118 protrudes outwardly from the side wall (for example, the left side wall) on one side in the vehicle width direction of the transmission case 117.
- the power transmission mechanism 104 engages with one end (for example, the left end) in the vehicle width direction of the transmission output shaft 118 and one end (for example, the left end) in the vehicle width direction of the rear axle 102b.
- the power transmission mechanism 104 extends in the vehicle length direction from the drive unit 103 toward the rear wheel 102, and is disposed on one side (for example, the left side) in the vehicle width direction as viewed from the vehicle width center line.
- the power transmission mechanism 104 is, for example, a chain transmission mechanism.
- the vehicle body frame 1 includes a head pipe 2, a main frame 3, and a rear frame 4.
- the head pipe 2 has a cylindrical shape made of metal (for example, iron-based metal) that is open at both ends, and is located at the front end of the body frame 1.
- the aforementioned steering shaft 105 is connected to the handle 121 and is inserted into the head pipe 2.
- the steering shaft 105 is disposed coaxially with the head pipe 2, and a common axis thereof forms the steering axis A 1 described above, and is supported by the head pipe 2 so as to be rotatable around the steering axis A 1.
- the upper end of the steering shaft 105 is connected to the lower surface of the bracket 122, and the handle 121 is attached to the upper surface of the bracket 122.
- the handle 121 has a pair of grips 121a and 121b (see FIG.
- the steering shaft 105 rotates with the steering axis A1 as the rotation axis, and the front wheel 101 turns.
- the grips 121a and 121b extend downward and rearward toward the tip. The tips of the grips 121a and 121b overlap the main frame 3 in a side view.
- the main frame 3 extends backward from the head pipe 2.
- the rear frame 4 is connected to the main frame 3 and extends rearward from the main frame 3.
- the main frame 3 and the rear frame 4 are paired in the vehicle width direction.
- a fuel tank 123 disposed behind the handle 121 is installed on the main frame 3, and a seat 124 disposed behind the fuel tank 123 is installed on the rear frame 4.
- the pair of main frames 3 are welded to the head pipe 2, and are separated from the head pipe 2 in the vehicle width direction and extend rearward.
- Each main frame 3 includes a rearward extending portion extending rearward from the head pipe 2, a bent portion 6 positioned at the rear end of the rearward extended portion, and a lower extending portion 7 extending downward from the bent portion 6.
- the rear extension portion includes a front frame portion 8 including front and rear unit mount portions 10 a and 10 b to which the drive unit 103 is attached, and a rear frame portion 9 behind the front frame portion 8.
- the bent portion 6 is provided at the rear end portion of the rear frame portion 9.
- a rear end portion of a side wall of a cylinder assembly 112 (for example, a cylinder head 114) is coupled to the rear unit mount portion 10a using a fastener 81 such as a bolt, and a cylinder assembly 112 (for example, for example, to the front unit mount portion 10b).
- the front end of the side wall of the cylinder block 113) is coupled using a fastener 82 such as a bolt.
- the fasteners 81 and 82 are inserted inward from the outside in the vehicle width direction of the mount portions 10a and 10b and engage with the cylinder assembly 112.
- the bracket 30 is disposed between the pair of lower extending portions 7, and the bracket 30 is coupled to the pair of lower extending portions 7 using a fastener 85 such as a bolt.
- the bracket 30 is also coupled to the lower end portion of the right downward extending portion 7 (see FIG. 2) using a fastener (not shown) such as a bolt.
- a portion of each downwardly extending portion 7 through which the fastener 85 is inserted is configured by the joint member 24, and a lower end portion of the right downwardly extending portion 7 through which the fastener is inserted is a joint member 26R (see FIG. 2). ).
- the bracket 30 is formed in a substantially rectangular plate shape, and has two surfaces facing forward and backward.
- the bracket 30 is coupled to the left downward extending portion 7 at the left edge, and is coupled to the right downward extending portion 7 (see FIG. 2) at the right edge.
- the rear portion of the casing member 103a (the rear portion of the crankcase 112, the transmission case 117) is coupled to the bracket 30 using a fastener (not shown) such as a bolt.
- the rear surface of the casing member 103a (crankcase 112, transmission case 117) faces the front surface of the bracket 30.
- the fastener is inserted forward from the rear of the bracket 30 and is engaged with the rear portion of the casing member 103.
- the left lower extension 7 is connected at its lower end to a stand bracket 126 that supports the side stand 127 in a swingable manner using a fastener 87 such as a bolt.
- part through which the fastener 87 is penetrated among the left downward extension parts 7 is comprised by the joint member 26L.
- the stand bracket 126 has a front protrusion 126a that protrudes forward and overlaps the lower rear portion of the casing 103 in a side view.
- the casing member 103a is also fastened to the stand bracket 126 by inserting a fastener 88 such as a bolt inwardly into the front protrusion 126a from the outside in the vehicle width direction.
- the bracket 30 is used not only for the drive unit 103 but also for supporting or mounting various components arranged at the rear part of the motorcycle 100.
- the bracket 30 is attached with a pivot shaft (not shown) that supports the swing arm 107 so as to be swingable and extends in the vehicle width direction.
- the pivot shaft uses fasteners 84 such as bolts at the left and right ends. Are coupled to each of the pair of downward extending portions.
- the central axis of the pivot shaft forms the swing axis A2 described above, and the portion of each downwardly extending portion 7 through which the fastener 84 is inserted is constituted by the joint member 24.
- a suspension mounting portion 38 that supports the upper end portion of the rear suspension 108 so as to be swingable around an axis in the vehicle width direction is provided at the upper edge portion of the bracket 30.
- the lower part of the front end of the rear frame 4 is fastened together with the bracket 30 to the downward extending portion 7 using a fastener 84.
- the bent joint member 21 is provided with a nut 22, and the front end upper portion of the rear frame 4 is fastened to the bent portion 6 by screwing the fastener 83 with the nut 22.
- the downward extending portion 7 has the above-described joint members 24 to 26 disposed below the bent joint member 21 and separated in the vehicle height direction.
- the bent joint member 21 and the joint member 23, the joint member 24 and the joint member 25, and the joint member 25 and the joint member 26 are connected to each other in the vehicle height direction by a pipe member.
- the main frame 3 is configured by connecting a plurality of pipe members and joint members, and welding is typically used for this connection.
- the pair of main frames 3 are rigidly coupled via the head pipe 2.
- the main frame 3 does not include a cross member that rigidly couples the rear extending portions, the bent portions 6 or the lower extending portions 7 to each other in the vehicle width direction.
- the main frame 3 can be easily corrected.
- the main frame 3 can be easily corrected so that a total of four fastening points set in the cylinder assembly 112 overlap the corresponding unit mount portions in the vehicle width direction.
- the motorcycle 100 can be easily assembled.
- FIG. 2 is a perspective view of the head pipe 2 and the main frame 3.
- the front frame portion 8 includes an upper frame 11 that extends rearward from the upper portion of the head pipe 2 and a lower frame 12 that extends rearward from the lower portion of the head pipe 2.
- Both the upper frame 11 and the lower frame 12 are constituted by pipe members.
- One of the upper frame 11 and the lower frame 12 has its end positioned forward of the other.
- the lower frame 12 terminates in front of the upper frame 11.
- the rear frame portion 9 continuously extends rearward from the upper frame 11.
- the pipe member constituting the upper frame 11 also constitutes the rear frame portion 9, and the upper frame 11 and the rear frame portion 9 are integrated by the same component.
- the pipe member is welded to the outer peripheral surface of the bending joint member 21 at the rear end.
- a rear engine mount 10b is provided at the rear end of the lower frame 12. That is, the pipe member constituting the lower frame 12 is welded to the outer peripheral surface of the joint member 13 described above at the rear end portion.
- An upper gusset frame 14 is also welded to the joint member 13. The upper gusset frame 14 extends rearward and upward from the joint member 13 and is welded from the lower side to the upper frame 11 or the rear frame portion 9 (that is, the pipe member constituting them).
- the front frame portion 8 has an arm frame 15 that extends downward and rearward from the front end portion of the lower frame 12, and a front unit mount portion 10 b is provided at the rear end of the arm frame 15. That is, the pipe member constituting the arm frame 15 is welded to the outer peripheral surface of the joint member 16 described above at the rear end portion.
- the lower gusset frame 17 is also welded to the joint member 13. The lower gusset frame 17 extends forward and downward from the joint member 13 and is welded to the rear end portion of the arm frame 15 from above.
- the front frame portion 8 includes connecting frames 18a to 18e that connect the upper frame 11 to the lower frame 12, and a connecting frame 18g that connects the lower frame 12 to the upper frame 11.
- Each connecting frame extends in the vehicle height direction so as to connect two frames separated in the vehicle height direction.
- the connecting frame also extends in the vehicle length direction and connects two frames separated in the vehicle height direction in the vehicle length direction. That is, in each connection frame, the weld joint on one end side is separated from the weld joint on the other end side in the vehicle length direction. Due to the presence of the connecting frame, the front frame portion 8 is configured such that a plurality of triangles are arranged in the vehicle length direction between the upper frame 11 and the lower frame 12 or between the lower frame 12 and the arm frame 15.
- the pair of front frame portions 8 can ensure the rigidity necessary for attaching the drive unit 103 (see FIG. 1) while securing a certain flexibility without a cross member. Since the rigidity is improved by the trellis structure, the weight can be reduced.
- the main frame 3 has a trellis portion 51 continuous from the head pipe 2 and a non-trellis portion 52 extending rearward from the trellis portion 51.
- the trellis part 51 is constituted by the front frame part 8 and extends rearward from the head pipe 2 to the upper and lower gusset frames 14 and 17.
- the non-trellis portion 52 is composed of one pipe member that forms the upper frame 11 and the rear frame portion 9.
- the non-trellis portion 52 is not formed in a lattice shape, and extends rearward in a linear form from the upper weld joint of the upper gusset frame 14 (that is, the rear upper end of the trellis portion 51).
- the trellis unit 51 realizes a trellis structure (lattice structure).
- the pair of front frame portions 8 are formed by connecting a plurality of pipe members arranged in different directions along a pair of virtual planes separated from the head pipe 2 in the vehicle width direction.
- the pipe members are connected to each other to form a lattice on the virtual plane.
- the virtual plane extends in the approximate vehicle height direction and the vehicle length direction.
- the virtual surface may be a flat surface, or a curved surface twisted around an axis in the vehicle height direction, the vehicle length direction, the vehicle width direction, or a direction inclined to these.
- the virtual surface projects outward in the vehicle width direction as it goes downward. Due to this overhang, the imaginary surface is inclined so as to go outward in the vehicle width direction as it goes downward. Alternatively, it is twisted around the vehicle longitudinal axis so that the upper part is directed inward in the vehicle width direction than the lower part. Further, the virtual surface protrudes outward in the vehicle width direction as it goes rearward. Due to this overhang, the virtual surface is inclined so as to go outward in the vehicle width direction as it goes forward. Alternatively, the vehicle is twisted around the vehicle height direction axis so that the front portion faces the inner side of the vehicle width than the rear portion. Since each pipe member is arranged along such a virtual plane, it does not need to be linear and may be appropriately curved.
- FIG. 2 illustrates the pipe member constituting the trellis part 51 together with the R line, and this R line defines a virtual plane.
- the head pipe 2 defines the front side of the trellis part 51.
- the arm frame 15 (and the front end portion of the lower frame 12) defines the lower side of the trellis portion 51.
- the upper and lower gusset frames 14 and 17 define the rear side of the trellis part 51.
- the upper frame 11 defines the upper side of the trellis part 51.
- the rear frame portion 9 integrated with the upper frame 11 defines a non-trellis portion 52, and the non-trellis portion 52 extends the upper side backward from the intersection of the upper side and the rear side of the trellis portion 51. Is formed.
- the equipment space 20 includes a non-trellis portion 52, a rear side of the trellis portion 51 (particularly, the upper gusset frame 14), and a downward extension portion 7 (particularly, a pipe member that connects between the bent joint member 21 and the joint member 23). ) Is wide open to the side through the opening defined in (1).
- Any equipment may be installed in the equipment space 20, but it is particularly useful for installing equipment that requires long piping or installing equipment that is long in the vehicle width direction. A wide opening can be used to allow such piping to enter or exit from outside the equipment space. In addition, it is allowed to project the end of the equipment in the vehicle width direction.
- FIG. 3 is a plan view of the vehicle body frame structure shown in FIG.
- a supercharger unit 130 as an example of equipment is installed in the equipment space 20.
- the supercharger unit 130 has a supercharger 131 that supercharges air.
- the supercharger protrudes from the inside of the equipment space to the outside through the opening in the equipment space in the vehicle width direction.
- the motorcycle 100 also includes an air supply duct 132 that supplies air to the supercharger 131.
- the upstream end of the air supply duct 132 is disposed, for example, at the front portion of the motorcycle 100, and it is easy to take in air from the outside air using traveling wind.
- the air supply duct 132 extends outward in the vehicle width direction of the front frame portion 8 in the vehicle length direction, and enters the equipment space 20 below the non-trellis portion 52 (rear frame portion 9). ing. The downstream end of the air supply duct 132 is connected to the supercharger 131.
- the supercharger unit 130 includes an air supply chamber 133 that takes in supercharged air (supply air), and an upstream air supply passage 134 that sends the air supply from the supercharger 131 to the air supply chamber 133 (see FIG. 3). ).
- the air supply chamber 133 incorporates a filter element (not shown) that cleans the air supply, and also functions as a so-called air cleaner box.
- the clean side of the air supply chamber 133 communicates with the combustion chamber described above via the downstream air supply passage 135.
- the downstream air supply passage 135 goes into the casing member 103 a through the rear wall of the cylinder head 114. Fuel from an injector (not shown) is injected into the downstream supply passage 135 and / or the clean side of the supply chamber 133.
- the exhaust pipe 140 (see FIG. 1) extends downward from the front wall of the cylinder head 114, and is finally connected to a muffler (not shown) disposed at the rear part of the motorcycle 100.
- a muffler (not shown) disposed at the rear part of the motorcycle 100.
- an ABS unit can be installed in the equipment space 20.
- the ABS unit has a casing connected to one or more pipes through which brake oil flows.
- the piping enters the equipment space 20 from the outside to the inside or exits from the inside to the outside using the open area below the rear frame portion 9. be able to.
- the non-trellis portion 52 or the rear frame portion 9 is formed by extending the upper frame 11, and the equipment space 20 is Equipment is accommodated between the upper frame and the rear frame portion 9 extending in the vehicle width direction, which is behind the end of the side frame 12.
- the upper frame 11 may terminate in front of the lower frame 12. In that case, the equipment may be accommodated behind the end of the upper frame 11 and between the lower frames in the vehicle width direction. Further, the equipment space 20 may be opened laterally above the lower frame 11.
- the upper frame 11 extends in the vehicle length direction so as to protrude above a virtual plane VP1 (see FIG. 1) perpendicular to the steering axis A1 after passing through the connection portion with the head pipe 2. .
- the upper frame 11 defines the upper side of the trellis part 51, and the non-trellis part 52 is formed by extending the upper side (upper frame 11) rearward.
- the area surrounded by the pair of main frames 3 around the equipment space 20 can be enlarged in the vehicle height direction. Therefore, even a high-profile equipment can be protected in the vehicle width direction by the pair of main frames 3.
- the side opening of the equipment space 20 can be expanded upward, and the arrangement
- the handle 121 is illustrated in a neutral state in which the vehicle advances straight. If the handle 121 is in a neutral state, the grips 121a and 121b extend symmetrically to the left and right with respect to the vehicle width center line WC passing through the head pipe 2 in plan view. The ends of the grips 121a and 121b are also relatively distant from the main frame 3.
- the driver wants to turn the vehicle to the left, the driver needs to turn the handle 121 in the direction of arrow LT (counterclockwise in plan view).
- the right grip 121b moves further forward from the main frame 3, while the left grip 121a moves rearward and inward in the vehicle width direction from the neutral state. Therefore, the left main frame 3, particularly the front frame 8 and the trellis Approaching part 51.
- the grips 121a and 121b extend downward and rearward from the bracket 122, and are not separated from the main frame 3 in the vehicle height direction and overlap the main frame 3 in a side view (see FIG. 1). ).
- the main frame 3 has the trellis part 51 comprised by the several pipe member arrange
- the maximum rudder of the vehicle is avoided by avoiding the interference with the main frame 3 at the end of the left grip 121a or the fist holding the left grip 121a with the main frame 3. It is necessary to set the corner.
- the left and right grips 121a and 121b are neutral and symmetrical with respect to the vehicle width center line WC, and the pair of main frames 3 are formed substantially symmetrical with respect to the vehicle width center line WC. Therefore, the case where the handle 121 is rotated in the direction of the arrow RT (clockwise in plan view) to turn the vehicle to the right is the same as that in the case of turning left.
- the state in which the handle 121 is rotated with respect to the neutral state for turning left and the state in which the handle 121 is rotated with respect to the neutral state for turning right are collectively referred to as a “turning operation state”.
- a retreat space 53 that is recessed inward in the vehicle width direction from the end of the handle 121 in a turning operation state is formed.
- the handle 121 in the turning operation state is stored in the retreat space 53.
- the upper frame 11 and the lower frame 12 constitute the front frame portion 8 and the trellis portion 51 as described above, and the retreat space 53 can be said to be formed in the front frame portion 8 or the trellis portion 51.
- the trellis portion 51 is provided on a virtual plane that protrudes in the vehicle width direction as it goes downward, and the upper frame 11 defines the upper side of the trellis portion 51. Then, the upper frame 11 extends rearward from the head pipe 2 more inward in the vehicle width direction than the lower frame 12.
- the pair of main frames 3 are separated in the vehicle width direction and extend rearward.
- the front end of the upper frame 12 is inclined outwardly in the vehicle width direction by the inclination angle ⁇ U with respect to the vehicle width center line WC, while the head pipe 2 It extends backward from.
- the front end portion of the lower frame 12 extends rearward from the head pipe 2 while being inclined outward in the vehicle width direction by an inclination angle ⁇ L with respect to the vehicle width center line WC.
- the inclination angle ⁇ L is larger than ⁇ U, and the lower frame 12 extends away from the upper frame 11 in the vehicle width direction and extends rearward from the head pipe 2.
- the retreat space 53 is formed in such a trellis portion 51 and is located above the lower frame 12 and inward in the vehicle width direction.
- connection frames 18a to 18e are provided between the upper frame 11 and the lower frame 12.
- the connecting frames 18a to 18e are arranged at positions avoiding the retreat space 53.
- the connecting frames 18a to 18e are arranged at positions that do not overlap with the ends of the handle 121 (grips 121a and 121b) in the turning operation state in a side view.
- the connecting frames 18 to e are disposed around the retreat space 53, and a part thereof defines the retreat space 53.
- the connecting frames 18a to 18e are arranged in the order of reference numerals later.
- the connecting frames 18a, 18c, 18e extend from the lower frame 12 to the front upper side and are welded to the upper frame 11.
- the connecting frame 18 a is welded to the rear end portion of the lower frame 12 and forms an inverted triangle together with the upper frame 11 and the upper gusset frame 14.
- the connection frame 18c is provided between the connection frames 18a and 18c, and is disposed so that the distance from the connection frame 18a is relatively long.
- the connection frame 18b extends rearward and upward from the connection frame 18c and is welded to the upper frame 11, and the upper end weld joint is set behind the connection frame 18a.
- the connecting frame 18d extends rearward and upward from the connecting frame 18e and is welded to the upper end portion of the connecting frame 18d.
- the connection frames 18b to 18e form a plurality of triangles that are closely arranged in the vehicle length direction at the front portion of the trellis portion 51.
- the central connection frames 18b and 18c are disposed relatively far from the rearmost connection frame 18a. Therefore, the connecting frames 18a to 18c form a relatively large polygonal (pentagonal shape in the illustrated example) opening 54 in the vehicle length direction together with the upper frame 18a and the lower frame 18b.
- the end of the handle 121 (grips 121a and 121b) approaches the opening 54.
- the periphery of the opening 54 is a retreat space 53, and the connecting frames 18 a to 18 c define the retreat space 53.
- the connecting frame 18a and the connecting frame 18 or 18c are arranged apart from each other in the vehicle length direction so that the end of the handle 121 in the turning operation state can approach the opening 54 and fit in the surrounding retreat space 53. ing.
- the vehicle body frame structure includes the head pipe 2 through which the steering shaft 105 connected to the handle 121 is inserted, and the pair of main frames 3 extending rearward from the head pipe 2 in the vehicle width direction.
- Each main frame 3 has an upper frame 11 extending rearward from the upper part of the head pipe 2 and a lower frame 12 extending rearward from the lower part of the head pipe 2.
- a retraction space 53 is formed between the upper frame 11 and the lower frame 12 in the vehicle height direction and is recessed inward in the vehicle width direction from the end of the handle 121 in the turning operation state.
- the fist that holds the handle 121 and the handle 121 (grips 121a and 121b) in the turning operation state can be prevented from interfering with the upper frame 11, and the steering operability can be improved. Since the interference is prevented by the presence of the evacuation space 53, a large maximum steering angle is allowed. In addition, options for the extending directions of the upper frame 11 and the lower frame 12 are increased, and the design freedom of the body frame 1 is improved.
- the upper frame 11 passes through a connection portion with the head pipe 2 and protrudes upward from a virtual plane VP1 perpendicular to the rotation axis (steering axis A1) of the steering shaft 105 and extends in the vehicle length direction. If it does in this way, the lower surface of the upper frame 11 can be located upward, and the space below it can be enlarged. Thereby, the arrangement
- the upper frame 11 upward for convenience of arrangement of the equipment the handle 121 and the main frame 3 in the turning operation state are easily overlapped in a side view.
- the vehicle body frame structure has connecting frames 18a to 18e for connecting the upper frame 11 to the lower frame 12 in the vehicle length direction, and the connecting frames 18a to 18e are arranged at positions avoiding the retreat space 53.
- the upper frame 11 is disposed closer to the center in the vehicle width direction than the lower frame 12 at a portion adjacent to the retreat space 53. If it carries out like this, it will become easy to arrange
- FIG. The driver's fist is prevented from approaching the upper frame 11 during the turning operation, and the driver can turn without taking a tight posture.
- the main frame 3 has a trellis part 51 continuous from the head pipe 2 and a non-trellis part 52 extending rearward from the trellis part 51.
- the trellis part 51 includes an upper frame 11, a lower frame 12, and an upper frame 11.
- the non-trellis portion 52 is formed in a linear shape continuously from the upper frame 11 and is constituted by connecting frames 18a to 18e that connect the lower frame 12. If it carries out like this, the non-trellis part 52 can also be arrange
- the vehicle body frame 1 forms a trellis structure at a position in front of and above the retreat space 53. As a result, it is possible to prevent a reduction in rigidity around the head pipe 2 where force is easily applied while reducing the weight.
- the opening 54 formed in the evacuation space 53 is formed in front of the evacuation space 53 and larger than the opening 54 formed between the frames. Specifically, the dimension in the direction in which the virtual plane VP1 extends is larger than the opening 54 formed between the frames in front of the retreat space 53 in a side view. Further, the retreat space 53 has a top end located above the virtual plane VP1 and a bottom end located below the virtual plane VP1 in a side view, thereby preventing the driver's fist from interfering with the frame more reliably. Can do.
- the design freedom of the body frame can be improved while maintaining the steering operability, and it can be widely applied to straddle-type vehicles such as motorcycles and ATVs.
Abstract
Description
2 ヘッドパイプ
3 メインフレーム
11 上側フレーム
12 下側フレーム
18a~f 連結フレーム
51 トレリス部
52 非トレリス部
53 退避空間
100 自動二輪車
105 ステアリングシャフト
121 ハンドル
130 過給機ユニット
131 過給機
132 エア供給ダクト
A1 操舵軸線
VP1 仮想平面
Claims (10)
- ハンドルと接続されるステアリングシャフトが挿通されるヘッドパイプと、前記ヘッドパイプから車幅方向に分かれて後方に延びる一対のメインフレームとを備え、
前記メインフレームは、前記ヘッドパイプの上部から後方に延びる上側フレームと、前記ヘッドパイプの下部から後方に延びる下側フレームと、を有し、
前記上側フレームと前記下側フレームとの間に、旋回操作状態のハンドルの端部から車幅方向内方に窪む退避空間が形成される、鞍乗型車両の車体フレーム構造。 - 前記上側フレームは、前記ヘッドパイプとの接続部分を通過して前記ステアリングシャフトの回転軸線に垂直な仮想平面よりも上方に突出するようにして、車長方向に延びる、請求項1に記載の鞍乗型車両の車体フレーム構造。
- 前記上側フレームを前記下側フレームと車長方向に連結する連結フレームを有し、前記連結フレームは前記退避空間を避けた位置に配置される、請求項1又は2に記載の鞍乗型車両の車体フレーム構造。
- 前記上側フレームは、前記退避空間に隣接する部分で、前記下側フレームよりも車幅方向中央寄りに配置される、請求項1乃至3のいずれか1項に記載の鞍乗型車両の車体フレーム構造。
- 前記メインフレームは、前記ヘッドパイプから連続するトレリス部と、前記トレリス部から後方に延びる非トレリス部とを有し、前記トレリス部は、前記上側フレーム、前記下側フレーム及び前記上側フレームと前記下側フレームとの間を接続する連結フレームによって構成され、前記非トレリス部が、前記上側フレームから連続して線状に形成される、請求項1乃至4のいずれか1項に記載の鞍乗型車両の車体フレーム構造。
- 前記非トレリス部の下方に配置され、前記非トレリス部から車幅方向外方に突出する装備品が配置される、請求項5に記載の鞍乗型車両の車体フレーム構造。
- 前記装備品は、前記メインフレームの外側から前記メインフレームの内側に延びて配置される吸気ダクトである、請求項6に記載の鞍乗型車両の車体フレーム構造。
- 前記装備品は、前記上側フレームの下方に配置されて前記メインフレームの内側から前記メインフレームの外側に部分的に突出する過給機ユニットである、請求項7又は8に記載の鞍乗型車両の車体フレーム構造。
- 前記上側フレーム及び前記下側フレームのうち一方は、その終端が他方の終端よりも前方に位置し、
前記一方の終端よりも後方であり且つ前記上側フレーム及び前記下側フレームのうち前記他方同士の車幅方向間に装備品が収容される、請求項1乃至8のいずれか1項に記載の鞍乗型車両の車体フレーム構造。 - ハンドルと接続されるステアリングシャフトが挿通されるヘッドパイプと、前記ヘッドパイプから車幅方向に分かれて後方に延びる一対のメインフレームとを備え、
前記メインフレーム上面は前端から後方に進むにつれて前記ヘッドパイプとの接続部分を通過して前記ヘッドパイプの回転軸線に垂直な仮想平面よりも上方に突出して延び、
前記メインフレームの外側面は車幅方向外側部分に旋回操作状態のハンドル端部から車幅方向内方に窪む退避空間が形成される、鞍乗型車両の車体フレーム構造。
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CN201380080670.2A CN105658512B (zh) | 2013-11-07 | 2013-11-07 | 跨乘式车辆的车身框架结构 |
PCT/JP2013/006570 WO2015068190A1 (ja) | 2013-11-07 | 2013-11-07 | 鞍乗型車両の車体フレーム構造 |
EP13897066.0A EP3067263B1 (en) | 2013-11-07 | 2013-11-07 | Vehicle body frame structure of a straddle-type vehicle |
JP2015546161A JP6194012B2 (ja) | 2013-11-07 | 2013-11-07 | 鞍乗型車両の車体フレーム構造 |
US15/035,191 US9855987B2 (en) | 2013-11-07 | 2013-11-07 | Vehicle body frame structure of straddle-type vehicle |
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JP2018144699A (ja) * | 2017-03-07 | 2018-09-20 | ヤマハ発動機株式会社 | 車両 |
JP6806745B2 (ja) * | 2018-08-30 | 2021-01-06 | 本田技研工業株式会社 | 鞍乗り型車両の車体フレーム構造 |
IT202200000323A1 (it) * | 2022-01-11 | 2023-07-11 | Giorgio Baruzzo | Telaio di motocicletta sportiva |
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JPWO2015068190A1 (ja) | 2017-03-09 |
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EP3067263A1 (en) | 2016-09-14 |
US20160280304A1 (en) | 2016-09-29 |
US9855987B2 (en) | 2018-01-02 |
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CN105658512A (zh) | 2016-06-08 |
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