JP4673562B2 - Motorcycle storage box and fuel tank structure - Google Patents

Description

  The present invention relates to a motorcycle storage box and a fuel tank structure.

As a conventional motorcycle storage box and fuel tank structure, a structure in which a storage box and a fuel tank disposed behind the storage box are attached to a vehicle body frame is known (see, for example, Patent Document 1).
JP-A-10-167143

  In Patent Document 1, as shown in FIG. 3 of the publication, a storage box 14 and a storage box 14 are mounted on a body frame 1 of a motorcycle (the reference numerals are the same as those described in the publication). It is shown that the fuel tank 15 disposed behind the fuel tank 15 is attached and the upper part of the fuel tank 15 is covered with an auxiliary machine cover 25 provided integrally with the rear portion of the storage box 14. Reference numeral 22 denotes a seat that can be freely opened and closed above the storage box 14 and the fuel tank 15.

  Further, in Patent Document 1, as shown in FIG. 8 of the same publication, it is shown that an auxiliary cover 25 that covers substantially the entire upper portion of the fuel tank is integrally provided at the rear portion of the storage box 14. Reference numeral 23 denotes a hinge provided at the front part of the storage box 14 so that the seat can be opened and closed, and reference numeral 32 denotes an opening at the front part of the auxiliary machine cover 25 so as to penetrate a striker (not shown) provided at the rear part of the seat. The through hole 27 is a cap hole that projects a cap that closes the fuel filler opening of the fuel tank 15 to the outside.

Since the auxiliary machine cover 25 covers almost the entire upper part of the fuel tank 15, the area of the auxiliary machine cover 25 becomes large, and the storage box 14 and the auxiliary machine cover 25 become large and heavy as a whole.
Further, since the through hole 32 through which the striker passes and the cap hole 27 through which the cap protrudes are opened, the shape of the auxiliary machine cover 25 becomes complicated.

  Further, when the fuel tank 15 includes, for example, a tank built-in type fuel pump, a mounting portion of the fuel pump to the fuel tank 15 protrudes outside (a connection portion of the fuel hose, a connector for energizing the fuel pump, etc.) It is also desirable to protect this part.

  SUMMARY OF THE INVENTION An object of the present invention is to reduce the size and weight of a storage box and simplify the shape of a storage box and a fuel tank structure for a motorcycle, and to protect an external protrusion of a fuel pump.

The invention according to claim 1 is provided with a storage box and a fuel tank below the seat, the fuel tank is arranged adjacent to the storage box, and the seat covers the entirety of the storage box and the fuel tank from above, In a motorcycle in which a fuel filler is provided on the upper surface of the fuel tank and a fuel pump is mounted on the mounting surface provided on the upper surface, the upper part of the fuel pump is covered with a flange extending integrally from the storage box, and the flange is filled with the fuel filler. The fuel discharge port is formed from the upper end portion of the fuel pump attached to the mounting surface provided on the upper surface of the fuel tank. The connector protrudes, and the discharge port is arranged closer to the storage box than the connector .

  Since the upper portion of the fuel pump is covered with the flange extending rearward from the rear portion of the storage box, the fuel pump is not exposed to the outside. Since the collar portion covers only the upper part of the fuel pump, the storage box provided with the collar portion integrally becomes smaller and lighter, and there is no need to provide a hole for allowing the striker to pass through or a hole for projecting the cap as in the prior art. Furthermore, even if the mounting portion of the fuel pump to the fuel tank protrudes to the outside, this protruding portion can be protected by the flange portion.

The invention according to claim 2 is characterized in that the mounting surface of the fuel pump is made one step lower than the upper surface of the fuel pump.
By making the mounting surface of the fuel pump one step lower than the upper surface of the fuel tank, the flange portion is not particularly formed high, and the protruding portion to the outside of the fuel pump can be made lower than its surroundings.

  The invention according to claim 3 is characterized in that the mounting surface of the fuel pump is formed at a position lower than the fuel filler opening.

The invention according to claim 4 is characterized in that the fuel pump is offset with respect to the vehicle body center.
Only the upper part of the fuel pump offset with respect to the vehicle body center can be covered with the flange.

The invention according to claim 5 is characterized in that the fuel pump is offset to the air cleaner side.
The fuel pump can be brought close to the intake system of the engine. When there is a side stand, the air cleaner side is the side stand side, and the fuel pump can be arranged on the side where the vehicle body is inclined .

The invention according to claim 6 is characterized in that the upper projecting portion of the fuel pump is made lower than the surroundings.
Since the protrusion of the fuel pump is at a low position, the protrusion can be protected.

The invention according to claim 7 is characterized by comprising a fuel hose that passes between the fuel tank and the storage box from the discharge port of the fuel pump and is connected to the suction port of the intake manifold.

The invention according to claim 8 is characterized in that the fuel tank includes a flange extending rearward and upward in a side view, and a rear portion of the flange is disposed along the rear frame and fixed to the rear frame.

In the invention according to claim 10, the upper surface of the fuel tank that is one step higher than the mounting surface is disposed on the side of the mounting surface, and the flange portion is disposed on the side of the mounting surface while covering the upper side of the fuel pump. The upper surface of the fuel tank is also covered.

The invention according to claim 11 is characterized in that the fuel tank is supported by the rear frame, and a seat support bar for supporting the bottom plate of the seat is attached to the rear frame so as to cross the upper surface of the fuel tank. .

  In the invention according to claim 1, since the upper part of the fuel pump is covered with the hook part extending rearward from the rear part of the storage box, it is only necessary to cover the upper part of the fuel pump with the hook part. The provided storage box can be made smaller and lighter.

  Moreover, since it is not necessary to provide the hole which lets a striker pass, and the hole which makes a cap protrude in the collar part, the shape of a collar part can be simplified. Further, even if the attachment portion of the fuel pump to the fuel tank protrudes to the outside, the protrusion portion can be reliably protected by the flange portion, and the reliability of the motorcycle can be improved.

  In the invention according to claim 2, since the mounting surface of the fuel pump is made one step lower than the upper surface of the fuel tank, the flange portion is not formed to be particularly higher than the fuel tank, and can be formed into a substantially flat shape. The shape of the storage box can be simplified, and the cost of the storage box can be reduced. Moreover, since the protrusion part to the exterior of a fuel pump exists in a low position, a protrusion part can be protected still more reliably.

  In the invention which concerns on Claim 3, the attachment surface of a fuel pump is formed in the position lower than a fuel filler opening.

  In the invention according to claim 4, since the fuel pump is offset with respect to the vehicle body center, if only the upper part of the fuel pump offset with respect to the vehicle body center is covered with the flange, the flange can be set small.

In the invention according to claim 5, since the fuel pump is offset to the air cleaner side, the fuel pump can be brought close to the intake system of the engine, and the fuel piping can be shortened. Further, the air cleaner side is side stand side, since the vehicle body is inclined, even when the fuel in the fuel tank is small, wear in good supply of fuel to the intake system.

In the invention which concerns on Claim 6 , since the protrusion part of the upper part of a fuel pump was made lower than the circumference | surroundings, a protrusion part can be protected.

In the invention which concerns on Claim 7 , it has a fuel hose which passes between a fuel tank and a storage box from the discharge port of a fuel pump, and is connected to the suction port of an intake manifold.

In the invention according to claim 8 , the fuel tank includes a flange extending rearward and upward in a side view, and a rear portion of the flange is disposed along the rear frame and fixed to the rear frame.

In the invention according to claim 9, the upper surface of the fuel tank that is one step higher than the mounting surface is disposed on the side of the mounting surface, and the flange portion is disposed on the side of the mounting surface while covering the upper side of the fuel pump. Cover the upper surface of the fuel tank.

In the invention according to claim 10 , the fuel tank is supported by the rear frame, and the seat support bar for supporting the bottom plate of the seat is attached to the rear frame so as to cross the upper surface of the fuel tank.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a motorcycle according to the present invention. A motorcycle 10 includes a rear frame 12 at the rear part of a vehicle body frame 11, and the rear frame 12 is disposed behind the storage box 13 and the storage box 13. This is a vehicle in which a fuel tank 14 is attached and the storage box 13 and the fuel tank 14 are covered with an openable seat 16.

  The vehicle body frame 11 includes a head pipe 21 provided at the front end, a down frame 22 extending rearward and downward from the head pipe 21, and a pair of left and right lower frames 23 extending rearward and upward from the lower end of the down frame 22. , 24 (only the reference numeral 23 on the front side is shown) and the rear frame 12 attached to the rear ends of the lower frames 23, 24, respectively.

  Here, 31 is a front fork that is attached to the head pipe 21 via a steering shaft 32 so as to be steerable, 33 is a front wheel that is rotatably attached to the lower end of the front fork 31, 34 is a handle attached to the top of the steering shaft 32, Reference numeral 36 denotes a front fender that covers the upper side of the front wheel 33, 37 and 38 (only the reference numeral 37 is shown), and a pair of left and right engine hanger plates attached to the lower frames 23 and 24 and the rear frame 12, respectively. A power unit 43 is attached to the plates 37 and 38 through a link 42 so as to be swingable. A rear cushion unit 43 is attached to the rear portion of the power unit 41 and the rear frame 12.

  Also, 44 is an air cleaner, 46 is a throttle body connected to the air cleaner 44 via a connecting tube 47, 48 is an intake manifold that is connected to the throttle body 46 and attached to the cylinder head 52 of the engine 51 constituting the power unit 41, 53 A fuel injection valve attached to the intake manifold 48, 54 a continuously variable transmission constituting the power unit 41, 56 a rear wheel attached to the output side of the continuously variable transmission 54, 57 a rear fender covering the rear wheel 56, 58 Is a helmet stored in the storage box 13.

FIG. 2 is a side view of the main part showing the rear part of the motorcycle according to the present invention (the arrow (FRONT in the figure indicates the front of the vehicle; the same applies hereinafter)), and a resin storage box 13 (here, the shape of the motorcycle). In order to facilitate understanding, the outline is shown by a thick line.) A flange 71 is integrally provided at the rear part, and the upper part of the fuel pump 72 provided at the front part of the fuel tank 14 is covered with the flange 71. Show.
The storage box 13 includes a storage portion 73 provided with a recess 73a for storage, and the above-described collar portion 71 extending rearward so as to be continuous with the upper portion of the storage portion 73. Reference numeral 13a denotes a sheet support portion provided on the front wall of the storage box 13 in order to support the sheet 16 so as to be freely opened and closed.

In the fuel tank 14, a pump mounting surface 77 is formed at a position lower than the upper surface 76 provided with the fuel filler port 74, a fuel pump 72 is mounted on the pump mounting surface 77, and a lower surface 78 corresponding to the lower end of the fuel pump 72 is the lowest. It is a part formed so as to be in a low position.
Here, 12a, 12b (only the front side reference numeral 12a is shown) is a tank mounting bracket with a bolt attached to the rear frame 12 to support the fuel tank 14, and 12c, 12d (only the front side reference numeral 12c is shown). ) Is a tank mounting bracket with a nut attached to the rear frame 12 to support the fuel tank 14, 12 e is a nut, 12 f is a bolt, and 79 is a filler cap that closes the fuel filler port 74.

  The fuel pump 72 is of a tank built-in type in which the upper end portion is attached to the pump mounting surface 77 of the fuel tank 14 and the lower side from the upper end portion is disposed in the fuel tank 14, and a fuel suction port 81 is provided at the lower end portion. A fuel discharge port 82 is provided at the upper end, and a fuel hose 83 for supplying fuel to the fuel injection valve 53 is connected to the discharge port 82.

  The fuel hose 83 extends substantially forward from the discharge port 82, extends substantially downward along the rear surface 85 of the storage box 13, and further passes below the lower surface 86 of the storage box 13, and further draws in the suction port 87 of the intake manifold 48. Is connected to.

  FIG. 3 is a perspective view showing a fuel tank structure according to the present invention. The fuel tank 14 has an upper surface 76, more specifically, a portion on the left side of the inclined surface 91 provided at the front portion of the upper surface 76 in a substantially semicircular shape. A pump mounting surface 77 is formed by recessing, and the upper end portion of the fuel pump 72 is mounted at a substantially central portion of the pump mounting surface 77.

  The upper surface 76 includes a substantially horizontal flat surface 92 provided with an oil filler port 74, an inclined surface 91 that decreases from the flat surface 92 toward the front, and a pump mounting surface 77. Reference numeral 76a denotes a side wall.

  Thus, by forming the pump mounting surface 77 by recessing the upper surface 76, the discharge port 82, the fuel hose 83, the connector 88 (a motor (not shown) in the fuel pump 72) protruding from the upper end of the fuel pump 72. , And the like, and the position of the surroundings, that is, the inclined surface 91 and the flat surface 92 can be made lower. In addition, the protective effect of the discharge port 82, the fuel hose 83 (see FIG. 2), the connector 88, and the like can be enhanced.

  Here, 93 is attached to brackets 12g and 12h (only the reference numeral 12g on the front side is shown on the front side) provided on the left and right sides of the rear frame 12, and supports the seat 16 (see FIG. 1) by attaching them with bolts 12j. Seat support bars 94 and 95 (only the reference numeral 94 on the front side are shown) are attached in the vicinity of the attachment portion of the seat support bar 93 to the rear frame 12 in order to attach the grab rail 96 (see FIG. 1) that the passenger grips. Grab rail support portions 94a and 95a (only the reference numeral 94a on the near side is shown) are grab rail mounting holes opened in the grab rail support portions 94 and 95, 97 is a cross pipe that extends across the rear left and right of the rear frame 12, and 98 It is a lock plate that constitutes a lock device that locks the opening and closing of the seat 16.

FIG. 4 is a plan view showing a mounting state of the storage box and the fuel tank according to the present invention, and the collar portion 71 of the storage box 13 (shown here by a bold line for easy understanding of the shape). This is a portion extending rearward so that the width of the storage portion 73 substantially matches the width of the fuel tank 14, and the rear end portion 101 is positioned in front of the filler cap 79 of the fuel tank 14. Further, the rear end 101 is located in front of the sheet support bar 93. For this reason, the fuel tank 14 behind the seat support bar 93 can bulge upward, for example, and the capacity of the fuel tank 14 can be increased. Reference numerals 12m and 12n denote brackets provided on the rear frame 12 for attaching the lower portion of the storage portion 73 to the rear frame 12, reference numerals 12p and 12p denote mounting bolts for attaching the storage box 13 to the rear frame 12, and reference numerals 12q and 12q denote rear frame 12. It is a mounting bolt which attaches the rear part of the accommodating part 73.

  The fuel hose 83 extends from the discharge port 82 of the fuel pump 72 to the left of the vehicle, passes between the fuel tank 14 and the storage box 13, and then passes below the throttle body 46 below the storage portion 73. It extends forward and to the right, further forwards, then makes a U-turn and extends backward to connect to the suction port 87 of the intake manifold 48 (see FIG. 2). Further, since the fuel hose 83 passes below the throttle body 46, it does not interfere with the storage box 13.

  FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 4, in which bent portions 106 and 107 are formed at the left and right ends of the flange portion 71, respectively, and the fuel pump 72 is centered on a fuel tank. 14 is arranged so as to be offset by an offset amount δ to the left of the vehicle body (represented by an arrow (LEFT) in the figure) with respect to a center line 108 drawn vertically at the left and right centers of the fuel tank 14. The left part 111a and the right part 111b are made lower than the center part 111c, and the fuel pump 72 is arranged above the left part 111a. Reference numeral 113 denotes a seal member that seals between the opening 114 opened in the pump mounting surface 77 of the fuel tank 14 and the fuel pump 72 inserted into the opening 114.

Next, the operation of the motorcycle storage box and fuel tank structure described above will be described.
In FIG. 2, when the seat 16 is closed, the seat 16 covers the entire storage box 13 and the fuel tank 14. At this time, since the seat support bar 93 attached to the rear frame 12 supports the bottom plate 116 provided at the lower portion of the seat 16, the load acting on the seat 16 can be received by the seat support bar 93, and the flange portion 71 is It is possible to prevent a large load from being applied to the containing storage box 13 and the fuel tank 14.

  Further, when the sheet 16 is opened counterclockwise from the state shown in FIG. 2 around the sheet support portion 13 a provided at the front end of the storage box 13, the stored items are put into and out of the storage portion 73 of the storage box 13 and the filler is filled. The fuel can be supplied to the fuel tank 14 by opening the cap 79. At this time, since the upper portion of the fuel pump 72 is covered with the flange portion 71, the upper portion of the fuel pump 72 and the fuel hose 83 are not interfered when the stored item is put in and out or when fueling.

  Further, by attaching the fuel pump 72 to the pump mounting surface 77 provided in the hollow portion of the fuel tank 14, for example, even if the flange portion 71 is bent downward by the downward pressing force, the flange portion 71 is inclined. 91 and the flat surface 92, the flange 71 does not interfere with the protrusions (the discharge port 82, the fuel hose 83, the connector 88, etc.) of the fuel pump 72, and the fuel pump 72 can be more reliably protected. .

As described above with reference to FIGS. 1 to 3, the present invention is the first in the motorcycle 10 in which the storage box 13 is provided below the seat 16 and the fuel tank 14 is provided behind the storage box 13. is attached to the fuel pump 72 to pump mounting surface 77 as the mounting surface provided on the upper surface 76 of the tank 14, and the upper side of the fuel pump 72 from the rear of the storage box 13 is covered with the eaves part 71 extending rearward, the fuel The fuel discharge port 82 and the connector 88 protrude from the upper end of the fuel pump 72 attached to the mounting surface provided on the upper surface 76 of the tank 14, and the discharge port 82 is disposed closer to the storage box 13 than the connector 88. It is characterized by.

  Since the upper portion of the fuel pump 72 is covered with the flange portion 71 extending rearward from the rear portion of the storage box 13, it is only necessary to cover the upper portion of the fuel pump 72 with the flange portion 71, so that the flange portion 71 is provided integrally. The storage box 13 can be reduced in size and weight.

  In addition, since it is not necessary to provide the hole 71 through which the striker is passed and the hole through which the cap protrudes in the collar part 71, the shape of the collar part 71 can be simplified. Furthermore, even if the mounting portion of the fuel pump 72 to the fuel tank 14, more specifically, the discharge port 82, the fuel hose 83, the connector 88, etc. protrudes to the outside, this protruding portion can be reliably protected by the flange 71. The reliability of the motorcycle 10 can be improved.

Second, the present invention is characterized in that the pump mounting surface 77 of the fuel pump 72 is one step lower than the upper surface of the fuel pump 72, specifically, the flat surface 92.
Since the pump mounting surface 77 for attaching the fuel pump 72 is made one step lower than the flat surface 92 of the fuel tank 14, the flange portion 71 is not formed to be particularly high, and can be formed into a substantially flat shape. The shape of the storage box 13 can be simplified, and the cost of the storage box 13 can be reduced. In addition, since the projecting portion to the outside of the fuel pump 72, particularly the projecting portion upward (the discharge port 82, the fuel hose 83, the connector 88, etc.) is at a low position, the projecting portion can be more reliably protected. .

Thirdly, the present invention is characterized in that the flange portion 71 extends to the front of a fuel filler port 74 provided on a flat surface 92 as a rear upper surface of the fuel tank 14.
Since the flange portion 71 is extended to the front of the fuel filler port 74 provided on the flat surface 92 of the fuel tank 14, a hole for projecting the cap, etc., compared to a conventional one covering the upper portion of the fuel filler port, etc. The shape of the storage box 13 can be simplified, and the cost can be reduced.

Fourth, the present invention is characterized in that the fuel pump 72 is offset with respect to a center line 108 as a vehicle body center.
If the fuel pump 72 is offset with respect to the center line 108 as the vehicle body center so that only the upper portion of the fuel pump 72 offset with respect to the center line 108 is covered with the flange 71, the flange 71 is set to be small. You can also.

Fifth, the present invention is characterized in that the fuel pump 72 is offset to the air cleaner 44 side.
By offsetting the fuel pump 72 toward the air cleaner 44, the fuel pump 72 can be brought close to the intake system of the engine 51, for example, the intake manifold 48, and the fuel hose 83 can be shortened. Further, since the air cleaner 44 side is the side stand side and the vehicle body is inclined, the fuel can be satisfactorily supplied to the intake system even when the fuel in the fuel tank is small.

  In this embodiment, the upper part of the storage box and the fuel tank is covered with the seat. However, the present invention is not limited to this, and only the upper part of the storage box is covered with the seat, and the fuel tank behind the storage box is covered with the seat. Instead, the one exposed to the outside may be extended integrally from the storage box to the rear, and the upper part of the fuel pump attached to the fuel tank may be covered with the one exposed to the outside.

  The storage box and fuel tank structure of the present invention is suitable for motorcycles, particularly scooter type vehicles.

1 is a side view of a motorcycle according to the present invention. Fig. 2 is a side view of the main part showing the rear part of the motorcycle according to the present invention. 1 is a perspective view showing a fuel tank structure according to the present invention. It is a top view which shows the attachment state of the storage box and fuel tank which concern on this invention. FIG. 5 is a sectional view taken along line 5-5 of FIG.

DESCRIPTION OF SYMBOLS 10 ... Motorcycle, 12 ... Rear frame, 13 ... Storage box, 14 ... Fuel tank, 16 ... Seat, 44 ... Air cleaner, 48 ... Intake manifold, 71 ... Saddle, 72 ... Fuel pump, 74 ... Refueling port, 76 ... Upper surface, 77 ... Mounting surface (pump mounting surface), 81 ... Suction port, 82, 83, 88 ... Projection (discharge port, fuel hose, connector), 92 ... Rear upper surface (flat surface), 93 ... Seat support bar, 106, 107 ... bent portion, 108 ... car body center (center line) , 116 ... bottom plate .

Claims (10)

A storage box (13) and a fuel tank (14) are provided below the seat (16), the fuel tank (14) is disposed adjacent to the storage box (13), and the seat (16) is stored in the storage. The entire box (13) and the fuel tank (14) are covered from above, and a fuel filler port (74) is provided on the upper surface (76) of the fuel tank (13 ) and provided on the upper surface (76) . In a motorcycle having a fuel pump (72) attached to the mounting surface (77) ,
The eaves portion extending integrally from the upper side of the storage box of the fuel pump (72) (13) covered with (71), and this overhang portion (71) do not extend the until the fuel supply port (74), wherein Forming bent portions (106, 107) bent downward on the left and right ends of the flange portion (71) ,
A fuel discharge port (82) and a connector (88) protrude from an upper end portion of the fuel pump (72) attached to the attachment surface (76) provided on the upper surface (76) of the fuel tank (14). The discharge port (82) is disposed closer to the storage box (13) than the connector (88).
The motorcycle storage box and fuel tank structure according to claim 1. The storage box and fuel tank structure for a motorcycle according to claim 1, wherein the mounting surface (77 ) of the fuel pump (72) is one step lower than the upper surface (76) of the fuel tank (14). . The motorcycle storage box and fuel tank structure according to claim 1 or 2, wherein a mounting surface (77 ) of the fuel pump (72) is formed at a position lower than the fuel filler opening (74) . The storage box and fuel tank structure for a motorcycle according to claim 1, 2 or 3, wherein the fuel pump (72) is offset with respect to a vehicle body center. The storage box and fuel tank structure for a motorcycle according to any one of claims 1 to 4, wherein the fuel pump (72) is offset toward the air cleaner (44) .   The storage box and fuel tank structure for a motorcycle according to any one of claims 1 to 6, wherein a protruding portion at an upper portion of the fuel pump (72) is made lower than the surroundings. A fuel hose (83 ) connected from the discharge port (82 ) of the fuel pump (72) to the suction port (87) of the intake manifold (48) passing between the fuel tank (14) and the storage box (13). The motorcycle storage box and fuel tank structure according to any one of claims 1 to 7, further comprising: The fuel tank (14), and characterized by a flange extending rearward and upward in side view, the rear portion of the flange is fixed to said is disposed along the rear frame (12) a rear frame (12) The motorcycle storage box and fuel tank structure according to any one of claims 1 to 7 . On the side of the mounting surface (77), the upper surface of raised the fuel tank than the mounting surface (77) (14) (76) is arranged, the eave portion (71), said fuel pump (72) 2. The motorcycle storage box and fuel tank structure according to claim 1, further comprising an upper surface of the fuel tank disposed on a side of the mounting surface. The fuel tank (14) is supported on the rear frame (12), the seat support bar (93) is the fuel tank supporting base plate (116) of the seat (16) to the rear frame (12) (14) The motorcycle storage box and fuel tank structure according to claim 1, wherein the storage box and the fuel tank structure are attached so as to cross the upper surface (76) of the motorcycle.

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