JP5738123B2 - Fuel supply device for saddle-ride type vehicles - Google Patents

Description

  The present invention includes a vehicle body frame, an engine mounted on the vehicle body frame, a tank body having a fuel filler opening at an upper end portion and opened downward, and a bottom plate that covers the tank body from below. A vertical fuel tank to be mounted, a fuel pump for pumping fuel stored in the fuel tank to the engine, an angle detector, an arm fixed to a rotation shaft of the angle detector, and the arm The present invention relates to a saddle-ride type vehicle having a float sensor attached to the front end of the vehicle and a remaining amount sensor accommodated in the fuel tank, and in particular, an improvement of a fuel supply device in which a fuel pump is accommodated in the fuel tank About.

  An example in which a fuel level sensor is housed in a fuel tank formed in a saddle shape so as to be mounted on a body frame of a motorcycle, and a fuel pump is attached to the body frame outside the fuel tank, and fuel Patent Document 1 discloses an example in which a fuel pump is housed and fixed in a tank, and a remaining amount sensor is attached to the fuel pump.

JP 2010-145327 A

  Incidentally, in some saddle-ride type vehicles, there is a case where it is desired to accommodate and arrange the fuel pump in the fuel tank. As disclosed in the above-mentioned Patent Document 1, the fuel pump is disposed in the fuel tank in which the fuel pump is disposed outside. Installation may be difficult even if the pump is accommodated, and when the fuel pump to which the remaining amount sensor is attached is accommodated and fixed in the fuel tank, a large attachment portion is required in the fuel tank. Therefore, there is a possibility of increasing the size of the fuel tank.

  The present invention has been made in view of such circumstances. When the fuel pump is accommodated and fixed in the fuel tank, the fuel pump can be easily attached while avoiding the enlargement of the fuel tank regardless of the shape of the fuel tank. An object of the present invention is to provide a fuel supply device for a saddle-ride type vehicle.

To achieve the above object, the present invention provides a vehicle body frame, an engine mounted on the vehicle body frame, a tank body having a fuel filler opening at its upper end and opened downward, and a bottom plate that covers the tank body from below. in is configured, and the fuel tank saddle to be mounted on the body frame so as to straddle the vehicle body frame, a fuel pump for pumping fuel stored in the fuel tank to the engine, the angle detector In the saddle-ride type vehicle, comprising: an arm that is fixed to a rotation shaft of the angle detector; and a remaining amount sensor that has a float attached to a tip of the arm and is accommodated in the fuel tank. pump, wherein the angle detector of the remaining amount sensor housed in the fuel tank and separately, the angle detector flat first the first mounting hole is provided for attaching the A biasing plate, and a second mounting plate portion second mounting hole for mounting the fuel pump is provided, the fuel supply port of the periphery of the inward side of the fuel tank along the central axis of the fuel supply port in the vehicle width direction central portion of the bottom plate at positions sandwiching the front and rear projection line in a side view, these first and second mounting plate portion and the fuel supply port is formed so as to line up in the front-rear direction in plan view, the float, said in the fuel pump closer than the angle detector, and a first said Rukoto provided so as to protrude outward from a said angle detector.

  According to the present invention, in addition to the configuration of the first feature, a fuel supply guide cylinder is formed on the upper end portion of the fuel tank, and a fuel supply guide tube extending inward of the fuel tank along a central axis of the fuel supply port is provided on the tank body. A flame arrester, which is connected to the upper end portion and allows the fuel to flow into the fuel tank and allows the air to be discharged from the fuel tank, covers the lower opening end of the fuel supply guide cylinder. The second feature is that it is attached to the cylinder.

  In addition to the configuration of the second feature, the third feature of the present invention is that the flame arrester is disposed at a position overlapping a part of the remaining amount sensor in plan view.

  In the present invention, in addition to any of the configurations of the first to third features, the angle that the first mounting plate portion and the second mounting plate portion form the extension lines of the mounting plate portions is the oil filler port. A fourth feature is that the bottom plate is formed so as to be 180 degrees or more on the side.

The present invention further includes a vehicle body frame, an engine mounted on the vehicle body frame, a tank body having a fuel filler opening at an upper end portion and opened downward, and a bottom plate that covers the tank body from below. A vertical fuel tank mounted on the fuel tank, a fuel pump for pumping the fuel stored in the fuel tank to the engine, an angle detector, an arm fixed to a rotation shaft of the angle detector, and the In a saddle-ride type vehicle having a float sensor attached to the tip of an arm and housed in the fuel tank, a flat first mounting plate portion for attaching an angle detector of the fuel sensor And a second mounting plate portion for mounting the fuel pump housed in the fuel tank separately from the angle detector, the fuel tank along the center axis of the fuel filler opening Is formed on the bottom plate of the projection line of the periphery of the fuel supply port to the side at the positions sandwiching the front and rear in a side view, a first mounting hole provided in the first mounting plate portion, the second mounting hole second mounting plate portion The first and second piercing directions when the first and second mounting holes are pierced simultaneously are set in a direction perpendicular to a plane parallel to one of the first and second mounting plate portions. A fifth feature is that a mounting hole having a central axis obliquely intersecting with the piercing direction is formed in an elliptical shape so that the projection onto the plane is circular.

According to the first feature of the present invention, the first mounting plate portion provided with the first mounting hole for mounting the angle detector of the remaining amount sensor and formed at the center in the vehicle width direction of the bottom plate of the fuel tank; In addition to the angle detector, a second mounting plate for mounting a fuel pump housed in the fuel tank is provided, and a second mounting plate formed at the center of the bottom plate in the vehicle width direction is a fuel filler port. The first and second mounting plate portions and the fuel filler port are arranged in the front-rear direction in plan view at a position where the projection line of the peripheral edge of the fuel filler port toward the inner side of the fuel tank along the central axis of Since the fuel tank is arranged in a line , when the fuel sensor is housed and fixed in the fuel tank, even if the fuel tank has a vertical shape , the fuel sensor is prevented from increasing in size. and the mounting of the fuel pump can be easily .

  According to the second feature of the present invention, a fuel supply guide cylinder having a fuel supply port formed at the upper end is connected to the upper end of the tank body of the fuel tank, and a flame arrester that covers the lower opening end of the fuel supply guide cylinder. The fuel supply guide tube extends inward of the fuel tank along the center axis of the fuel supply port. Therefore, the fuel supply guide tube connected to the fuel supply port has a remaining amount sensor and a fuel pump. A flame arrestor can be attached while avoiding interference with the sensor.

  According to the third feature of the present invention, since the flame arrester overlaps a part of the remaining amount sensor in plan view, the flame arrester and the remaining amount sensor are arranged in a narrow space in the fuel tank while avoiding mutual interference. be able to.

  According to the fourth feature of the present invention, the angle formed by the extension lines of the first and second mounting plate portions is 180 degrees or more on the fuel filler port side, thereby orthogonal to the first and second mounting plate portions. It is possible to improve the assembling property of the remaining amount sensor and the fuel pump while avoiding interference with the fuel filler port side by arranging the axis line to be V-shaped open toward the fuel filler port side.

  Furthermore, according to the fifth feature of the present invention, the first mounting hole provided in the first mounting plate portion and the second mounting hole provided in the second mounting plate portion are arranged in a direction perpendicular to a plane parallel to one of the first mounting holes. A piercing direction when piercing the first and second mounting holes at the same time is set, and the mounting hole having a central axis that obliquely intersects the piercing direction among the first and second mounting holes is projected onto the plane. Since it is formed into an oval shape so as to be circular, the first and second mounting holes having different angles with respect to the central axis of the fuel filler port can be formed by one piercing from the piercing direction.

1 is a left side view of a motorcycle. It is a longitudinal cross-sectional view of a fuel tank, and is sectional drawing which follows the 2-2 line of FIG. FIG. 3 is a partially cutaway plan view seen from the direction of arrow 3 in FIG. 2.

  Embodiments of the present invention will be described with reference to FIGS. In the following description, the front and rear, the top and bottom, and the left and right directions are directions as viewed from the occupant riding the motorcycle.

  In FIG. 1, a front fork 12 and a bar-shaped steering handle 13 that pivotally support a front wheel WF are supported on a head pipe 11 at the front end of the body frame F of the motorcycle so as to be steerable. A rear wheel WR is pivotally supported at the rear portion of the swing arm 14 that is supported so as to be swingable up and down at an intermediate portion in the front-rear direction of F.

  An air-cooled engine E that exerts power for driving the rear wheel WR is mounted on the vehicle body frame F so as to be disposed between the front wheel WF and the rear wheel WR. The disposed fuel tank 15 is supported on the front portion of the vehicle body frame F, and the riding seat 16 disposed on the rear side of the fuel tank 15 is supported on the rear portion of the vehicle body frame F. The front lower portion of the fuel tank 15 is covered with a pair of left and right shrouds 17 from both sides, and the rear portion of the vehicle body frame F is covered with a pair of left and right side covers 18 from both sides.

  Referring to FIGS. 2 and 3 together, the fuel tank 15 constitutes a part of the vehicle body frame F and is formed in a bowl shape so as to straddle a main frame 19 extending rearwardly downward from the head pipe 11. The tank main body 20 has a fuel filler opening at the upper end and is opened downward, and a bottom plate 21 that covers the tank main body 20 from below.

  A concave portion 22 that is recessed downward is formed at the upper end of the front portion of the tank body 20, and an oil supply guide cylinder 23 that projects the upper end portion of the concave portion 22 is connected to the upper end portion of the tank body 20 by welding. A small-diameter cylindrical portion 23a is coaxially and integrally formed at the upper end portion of the oil-supplying guide tube 23 so as to be bent inward, and the small-diameter cylindrical portion 23a forms an oil supply port 24. In other words, the fuel supply port 24 is formed at the upper end portion, and a fuel supply guide cylinder 23 extending inward of the fuel tank 15 along the central axis of the fuel supply port 24 is connected to the upper end portion of the tank body 20.

The remaining amount of fuel in the fuel tank 15 is detected by a remaining amount sensor 25, and this remaining amount sensor 25 is an angle detector 26 and an arm fixed to a rotating shaft 27 of the angle detector 26. 28 and a float 29 attached to the tip of the arm 28, the angle detector 26 is attached to the front portion of the bottom plate 21 via a support member 30, and the float 29 is attached to the angle detector 26. It is provided closer to the fuel pump 40 and so as to protrude outward in the vehicle width direction from the angle detector 26 .

  A flat first mounting plate portion 31 is formed in the front portion of the bottom plate 21, and a first mounting hole 32 is provided in the central portion of the first mounting plate portion 31.

  A ring-shaped first reinforcing plate 33 surrounding the first mounting hole 32 is fixed to the first mounting plate portion 31 on the inner side of the fuel tank 15 by welding, and a first bolt support plate 34 is attached to the fuel. It is fixed by welding so as to surround the first mounting hole 32 from below the tank 15. A plurality of, for example, four bolts 35 arranged at equal intervals around the first mounting hole 32 are fixed to the first bolt support plate 34 by welding.

  The support member 30 includes a closing plate portion 30a that contacts the first bolt support plate 34 so as to close the first mounting hole 32 from below, and the closing plate portion that is inserted through the first mounting hole 32. An upstanding wall 30b extending upward from 30a is integrally formed, and an annular first seal member 36 that contacts the peripheral edge of the first mounting hole 32 is attached to the closing plate 30a.

  Further, a set plate 37 that sandwiches the closing plate portion 30a with the first bolt support plate 34 is in contact with the closing plate portion 30a, and the bolt inserted through the closing plate portion 30a and the set plate 37. The nuts 38 are screwed to 35 and the nuts 38 are fastened, whereby the support member 30 closes the first mounting hole 32 in a liquid-tight manner and is fixed to the first mounting plate portion 31.

  The angle detector 26 of the remaining amount sensor 25 is supported by the standing wall 30 b of the support member 30, and the angle detector 26 is attached to the first mounting plate portion 31 via the support member 30.

  The fuel pump 40 that pumps the fuel stored in the fuel tank 15 to the engine E is housed in the fuel tank 15 separately from the angle detector 26 of the remaining amount sensor 25. A second mounting plate portion 41 for mounting the fuel pump 40 is formed at the rear portion of the bottom plate 21.

  A flat second mounting plate portion 41 is formed at the rear portion of the bottom plate 21, and a second mounting hole 42 is provided at the center of the second mounting plate portion 41.

  A ring-shaped second reinforcing plate 43 surrounding the second mounting hole 42 is fixed to the second mounting plate portion 41 on the inner side of the fuel tank 15 by welding, and the second bolt support plate 44 is connected to the fuel by the fuel. It is fixed by welding so as to surround the second mounting hole 42 from below the tank 15. A plurality of, for example, four bolts 45 arranged at equal intervals around the second mounting hole 42 are fixed to the second bolt support plate 44 by welding.

  A pump support plate 46 that covers the second mounting hole 42 from below is abutted on the bolt support plate 44 from below, and an annular second plate is provided between the pump support plate 46 and the peripheral edge of the second mounting hole 42. A seal member 47 is interposed. Thus, nuts 48 are screwed onto the bolts 45 inserted through the pump support plate 46, and the nuts 48 are tightened so that the pump support plate 46 makes the second mounting hole 42 liquid-tight. It is closed and fixed to the second mounting plate portion 41.

  A base end portion of a pair of support stays 50 and 51 to be inserted into the fuel tank 15 from the second mounting hole 42 is fixed to the pump support plate 46, and between the distal end portions of the support stays 50 and 51. The fuel pump 40 is supported. In addition, a suction filter 52 for filtering the fuel in the fuel tank 15 and sucking it by the fuel pump 40 is supported at the front ends of the support stays 50 and 51.

  A discharge pipe 53 for guiding the fuel discharged from the fuel pump 40 extends from the fuel pump 40 and penetrates the pump support plate 46 in a liquid-tight manner. The discharge pipe 53 is a secondary filter (not shown). To the fuel injection valve (not shown) of the engine E. Further, a return pipe 54 for guiding surplus fuel from the fuel injection valve to the fuel pump 40 side extends through the pump support plate 46 in a liquid-tight manner and extends to the fuel pump 40 side. It is connected to a regulator (not shown) attached to the fuel pump 40.

According to the present invention, the flat first and second mounting plate portions 31, 41 formed at the vehicle width direction center portion of the bottom plate 21 of the fuel tank 15 are connected to the fuel tank 15 along the center axis of the fuel filler opening 24. The first and second mounting plate portions 31 and 41 and the fuel filler port 24 in the front-rear direction in a plan view at a position sandwiching the projection line 55 of the peripheral edge of the fuel filler port 24 toward the inner side from the front and rear. Are arranged in a row.

  Moreover, the first mounting plate portion 31 and the second mounting plate portion 41 are configured so that the angle α formed between the extension lines of the mounting plate portions 31 and 41 is 180 degrees or more on the fuel filler port 24 side. Formed on the bottom plate 21.

  A flame arrester 56 that covers the lower open end of the oil supply guide tube 23 is attached to the oil supply guide tube 23 that forms the oil supply port 24 at the upper end. This flame arrester 56 has a number of through holes and is welded coaxially to the lower end portion of the oil supply guide cylinder 23 and welded to the lower end portion of the punching pipe 57 having a number of through holes. The punching plate 58 is configured to allow the fuel to flow into the fuel tank 15 and to discharge the air from the fuel tank 15. A gun stopper 59 is provided on the inner surface of the upper end portion of the punching pipe 57 so as to abut the tip of a fuel gun inserted through the fuel filler port 24 and regulate the insertion end of the fuel gun.

  Moreover, the flame arrester 56 is disposed at a position overlapping with a part of the remaining amount sensor 25 in plan view. In this embodiment, the vertical line L passing through the front end of the flame arrester 56 in side view. The flame arrestor 56 is attached to the oil supply guide cylinder 23 so as to cross the remaining amount sensor 25.

  The first and second mounting plates 31 and 41 are arranged in a direction orthogonal to a plane parallel to one of the first and second mounting plate portions 31, 41, in this embodiment, in a direction orthogonal to the plane PL parallel to the first mounting plate portion 31. A piercing direction 60 for piercing the mounting holes 32 and 42 at the same time is set, and the mounting hole having a central axis that obliquely intersects the piercing direction 60 among the first and second mounting holes 32 and 42. In this embodiment, the second mounting hole 42 is formed in an elliptical shape so that the projection onto the plane PL is circular.

Next, to explain the action of this embodiment, the fuel tank 15, level sensor 25 and the fuel pump 40 is housed, a first mounting hole for mounting the angle detector 26 of the level sensor 25 A flat first mounting plate portion 31 provided with a second mounting plate portion 41 provided with a second mounting hole for mounting the fuel pump 40 is provided on the fuel tank 15 along the central axis of the fuel filler port 24. The first and second mounting plate portions 31 and 41 and the fuel filler port 24 are arranged in the front-rear direction in a plan view at a position where the projection line 55 of the peripheral edge of the fuel filler port 24 toward the inward side is sandwiched from the front and rear. because they are formed in the vehicle width direction central portion of the bottom plate 21 of the fuel tank 15 in the, housing the fuel pump 40 to fuel tank 15, when fixed, the shape of the fuel tank 15 is a saddle-type fuel tank 15 enlargement times The attachment of the fuel pump 40 can be facilitated while.

  An oil supply guide 24 is formed at the upper end of the tank body 20 along the central axis of the fuel supply port 24 and is connected to the upper end of the tank body 20. A flame arrester 56 that allows the fuel to flow to the fuel tank 15 and allows the air to be discharged from the fuel tank 15 covers the lower opening end of the fuel supply guide cylinder 23 and is attached to the fuel supply guide cylinder 23. A flame arrester 56 can be attached to the fuel supply guide cylinder 23 connected to the fuel supply guide cylinder 23 while avoiding interference with the remaining amount sensor 25 and the fuel pump 40.

  Further, since the flame arrester 56 is disposed at a position overlapping a part of the remaining amount sensor 25 in plan view, the flame arrester 56 and the remaining amount sensor 25 are disposed in a narrow space in the fuel tank 15 while avoiding mutual interference. can do.

  Further, the bottom plate 21 is configured such that the angle α between the first mounting plate portion 31 and the second mounting plate portion 41 of the extension lines of the mounting plate portions 31 and 41 is 180 degrees or more on the fuel filler port 24 side. Therefore, it is arranged so that the axis perpendicular to the first and second mounting plate portions 31 and 41 forms a V shape that opens toward the fuel filler port 24 side, and interference with the fuel filler port 24 side is caused. Assembling performance of the remaining amount sensor 25 and the fuel pump 40 can be improved while avoiding.

  Further, a piercing direction 60 for piercing the first and second mounting holes 32, 42 at the same time is set in a direction orthogonal to the plane PL parallel to the first mounting plate portion 31. Since the second mounting hole 42 having a central axis that intersects obliquely is formed in an elliptical shape so that the projection onto the plane PL is circular, the first and second angles with respect to the central axis of the fuel filler opening 24 are different from each other. The second mounting holes 32 and 42 can be formed by a single piercing from the piercing direction 60.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

DESCRIPTION OF SYMBOLS 15 ... Fuel tank 20 ... Tank main body 21 ... Bottom plate 23 ... Refueling guide cylinder 24 ... Refueling port 25 ... Remaining amount sensor 26 ... Angle detector 27 ... Turning Shaft 28 ... Arm 29 ... Float 31 ... First attachment plate 32 ... First attachment hole 40 ... Fuel pump 41 ... Second attachment plate 42 ... Second attachment Hole 55 ... Projection line 56 ... Flame arrestor 60 ... Piercing direction E ... Engine F ... Body frame PL ... Plane WF ... Front wheel

Claims (5)

A vehicle body frame (F), an engine (E) mounted on the vehicle body frame (F), a tank body (20) having an oil filler port (24) at the upper end and opened downward, and the tank body (20 ) it consists of a bottom plate covering a lower (21), wherein the body frame (saddle-type fuel tank so as to straddle the F) is mounted on the body frame (F) (15), the fuel tank (15 ) A fuel pump (40) for pumping fuel stored in the engine (E), an angle detector (26), and an arm (26) fixed to the rotating shaft (27) of the angle detector (26). 28), and a saddle-ride type vehicle having a float (29) attached to the tip of the arm (28) and a remaining amount sensor (25) accommodated in the fuel tank (15).
The fuel pump (40) is housed in the fuel tank (15) separately from the angle detector (26) of the remaining amount sensor (25) ,
It said angle detector first mounting hole (32) of the first mounting plate portion flat provided for attaching (26) and (31), a second mounting hole for mounting the front Symbol fuel pump (40) ( 42) is a projection line of the peripheral edge of the fuel filler port (24) on the inner side of the fuel tank (15) along the central axis of the fuel filler port (24). The first and second mounting plate portions (31, 41) and the fuel filler port (24) are seen in a plan view at the vehicle width direction center portion of the bottom plate (21) at a position sandwiching (55) from the front and rear in a side view. In order to line up in the front-rear direction ,
The float (29), the angle detector at the fuel pump (40) nearer (26), and wherein Rukoto provided to project the angle detector from (26) to the outside in the vehicle width direction A fuel supply device for a saddle-ride type vehicle.   An oil supply guide tube (23) is formed on the upper end of the fuel supply port (24) and extends inward of the fuel tank (15) along the central axis of the fuel supply port (24). A flame arrester (56), which is connected to the upper end portion and allows fuel to flow into the fuel tank (15) and allows air to be discharged from the fuel tank (15), is provided with the fuel supply guide tube ( 23. The fuel supply device for a saddle-ride type vehicle according to claim 1, wherein the fuel supply device is attached to the fuel supply guide cylinder (23) so as to cover a lower opening end of the vehicle.   The fuel supply device for a saddle-ride type vehicle according to claim 2, wherein the flame arrester (56) is arranged at a position overlapping a part of the remaining amount sensor (25) in plan view.   The first mounting plate portion (31) and the second mounting plate portion (41) are at an angle of 180 degrees or more on the fuel filler opening (24) side with respect to the extension lines of the mounting plate portions (31, 41). The fuel supply device for a saddle-ride type vehicle according to any one of claims 1 to 3, wherein the fuel supply device is formed on the bottom plate (21). A vehicle body frame (F), an engine (E) mounted on the vehicle body frame (F), a tank body (20) having an oil filler port (24) at the upper end and opened downward, and the tank body (20 ) And a vertical fuel tank (15) that is mounted on the vehicle body frame (F), and the fuel stored in the fuel tank (15) is supplied to the engine (E ), A fuel pump (40) pumped to the angle detector, an angle detector (26), an arm (28) fixed to the rotation shaft (27) of the angle detector (26), and a tip of the arm (28). In a saddle-ride type vehicle having a float (29) to be attached and a remaining amount sensor (25) accommodated in the fuel tank (15),
A flat first mounting plate (31) for mounting the angle detector (26) of the remaining amount sensor (25) and the angle detector (26) are separated from each other in the fuel tank (15). A second mounting plate portion (41) for mounting the fuel pump (40) accommodated in the fuel tank (15) along the central axis of the fuel filler port (24). (24) is formed on the bottom plate (21) at a position sandwiching the projection line (55) of the periphery from the front and rear in a side view,
The first mounting hole (32) is provided in the first mounting plate (31), the second mounting hole (42) is provided in the second mounting plate (41), and the first and second mounting plates (31). 41), a piercing direction (60) for simultaneously piercing the first and second mounting holes (32, 42) in a direction orthogonal to a plane (PL) parallel to one of the first and second mounting holes is set, Of the second mounting holes (32, 42), the mounting hole (42) having a central axis obliquely intersecting the piercing direction (60) is elliptical so that the projection onto the plane (PL) is circular. fuel supply device in a saddle-ride type vehicle you being formed on.

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