TW201920832A - Fuel supply device - Google Patents

Abstract

A fuel supply device has a lid member for closing an opening hole of an upper wall part of a fuel tank, a fuel pump configured to suction fuel from the fuel tank and to discharge said fuel, a pump casing holding the fuel pump and being attached to the lid member, a fuel filter including a bag-shaped filter member for filtering the fuel suctioned into the fuel pump, and a pressure regulator configured to control pressure of the fuel discharged from the fuel pump and including an excess fuel outlet for discharging excess fuel. An excess fuel discharge path for discharging the excess fuel discharged from the excess fuel outlet toward the filter member is formed as part of the pump casing.

Description

Fuel supply device

The present invention relates to a fuel supply apparatus, and more particularly to a fuel supply apparatus for a vehicle.

A fuel supply device known in the prior art has a cover member, a fuel pump, a pump casing, a fuel filter, and a pressure regulator (see Japanese Laid-Open Patent Publication No. 2010-112253). In Japanese Laid-Open Patent Publication No. 2010-112253, a fuel supply device is attached to a bottom wall member of the fuel tank such that the cover member is closed to form an opening hole in the bottom wall member. The fuel supply device draws fuel from the fuel tank via a fuel pump and discharges the fuel to the outside thereof. The pump housing holding the fuel pump is attached to the cover member. The fuel filter includes a bag filter element that filters the fuel that is drawn into the fuel pump. The pressure regulator controls the fuel discharged by the fuel pump and has an excess fuel outlet for discharging excess fuel. The pressure regulator also includes a lower member that is mounted upright on the cover member and an upper member that is attached to the lower member and suspended from the pump housing such that the lower member and the upper member form an excess fuel discharge path. According to this configuration, excess fuel discharged through the excess fuel outlet of the pressure regulator flows through the excess fuel discharge path and is then discharged toward the filter element.

According to the fuel supply device of Japanese Laid-Open Patent Publication No. 2010-112253, it is necessary to use an additional component separate from the pump casing. That is, the pressure regulator requires the use of additional components to create an excess fuel discharge path between the two components corresponding to the lower and upper components. Therefore, the size and cost of the fuel supply device relatively increase as the number of components increases. Therefore, it is desirable to provide an improved fuel supply.

A first aspect of the invention resides in a fuel supply device having a cover member, a fuel pump, a pump housing, a fuel filter, and a pressure regulator. The cover member is for closing the opening hole of the upper wall member of the fuel tank. The fuel pump system is configured to draw fuel from the fuel tank and discharge fuel. The pump housing holds the fuel pump and is attached to the cover member. The fuel filter includes a bag filter element that filters fuel that is drawn into the fuel pump. The pressure regulator is configured to control the pressure of the fuel discharged from the fuel pump and includes an excess fuel outlet for discharging excess fuel. An excess fuel discharge path for exhausting excess fuel emissions from the excess fuel outlet toward the filter element is formed as part of the pump casing.

According to the first aspect of the invention, since the excess fuel discharge path is formed as part of the pump casing, there is no need to use any additional components separate from the pump casing to form an excess fuel discharge path, and thus the number of components can be avoided. increase. Therefore, it is possible to avoid increasing the size and cost of the fuel supply device.

A second aspect of the invention is the fuel supply apparatus of the first aspect, wherein the pump housing comprises a facing wall member, the facing wall member being oriented toward the excess fuel outlet including the pressure regulator, wherein the excess fuel storage wall member is formed a facing wall member, and wherein the excess fuel storage wall member supports a component including an excess fuel outlet of the pressure regulator, and the excess fuel storage wall member forms an excess fuel storage member for use in excess fuel outlet Immerse into the excess fuel stored in it and pass through the remaining fuel discharge path.

According to a second aspect of the invention, the excess fuel discharged from the excess fuel outlet of the pressure regulator is stored in the excess fuel storage component and then flows through the excess fuel discharge path. Therefore, the excess fuel outlet of the pressure regulator is immersed in the excess fuel temporarily stored in the excess fuel storage member, so that the discharge sound of the excess fuel discharged from the excess fuel outlet can be suppressed.

A third aspect of the invention is the fuel supply apparatus of the first or second aspect, wherein the pressure regulator is disposed in parallel with the fuel pump such that the excess fuel outlet is oriented downward.

According to a third aspect of the invention, the pressure regulator can be a proximity fuel pump and the excess fuel outlet can be a filter element proximate to the fuel filter. Therefore, the pump casing can be miniaturized.

A fourth aspect of the invention is the fuel supply apparatus of any one of the first to third aspect, wherein the fuel pump is held between the cover member and the pump casing.

According to the fourth aspect of the present invention, in addition to the use of the cover member and the pump casing, it is not necessary to use any additional components for holding the pressure regulator, so that an increase in the number of components can be avoided.

An embodiment of the present invention will be described below in conjunction with the drawings. In this embodiment, a fuel supply device for a vehicle such as a motorcycle and a two-wheeled vehicle of a Scooter will be described. Figure 1 is a perspective view of a fuel supply device. Figure 2 is a front view of the fuel supply unit. Figure 3 is a right side view of the fuel supply unit. Figure 4 is a cross-sectional side view of the fuel supply unit. Figure 5 is a perspective view of the fuel supply device in an exploded state. The arrows in the respective figures indicate the front direction, the rear direction, the right direction, the left direction, the upper direction, and the lower direction of the fuel supply device, respectively. The upper direction and the lower direction correspond to the direction of gravity in a state in which the fuel supply device is mounted on the fuel tank of the vehicle, that is, the upper direction and the lower direction correspond to the vertical height direction of the vehicle of the fuel supply device. The front direction, the rear direction, the right direction, and the left direction are not specifically indicated with respect to the vehicle, and in this case, the front direction, the rear direction, the right direction, and the left direction may be one of a plurality of directions.

<Configuration of Fuel Supply Device> The configuration of the fuel supply device will be described. As shown in Fig. 2, the fuel supply device 10 is configured to move fuel from the fuel tank 12 of the vehicle into the engine (internal combustion engine). The type of this fuel supply device (see Fig. 3) attached to the upper wall member 13 of the fuel tank 12 is referred to as an upper mounting type. The opening hole 14 formed in the upper wall member 13 of the fuel tank 12 has a circular through hole shape.

As shown in FIG. 4, the fuel supply device 10 has a cover member 16, a fuel pump 18, a pressure regulator 20, a pump casing 22, and a fuel filter 24. The cover member 16 is made of a resin material and has a cover body 26 in the shape of a disk. The cover member 16 has a portion that projects vertically upward from a radial central portion of the cover body 26, this portion being coupled to the fuel delivery tube member 36. As shown in Figs. 4 and 5, the fuel delivery tube member 36 extends rearward from the central portion of the cover body 26. Figure 6 is a bottom plan view of the bottom surface of the cover member 16 of the fuel supply unit 10. As shown in Fig. 6, on the bottom surface of the cover body 26, a substantially annular fitting wall member 27 is formed concentrically with the cover body 26 (see Figs. 2 and 3), and the mating wall member 27 is shared with the cover body 26. The same radial center. Because of the circumferential gap between the cover body 26 and the mating wall member 27, the outer diameter of the mating wall member 27 having a single size is smaller than the outer diameter of the cap body 26, and the amount of the radial gap shown in Fig. 6 Includes a single size. The mating wall member 27 is formed by a plurality of circumferentially unequal lengths (four shown in the embodiment of Fig. 6) which are unequally spaced circumferential arcs.

As shown in Fig. 4, the pump connecting cylindrical member 28 extending perpendicularly at the central portion of the cap body 26 is formed in the shape of a hollow cylinder. The coupling cylindrical member 30 formed on the bottom surface of the cover body 26 is formed into a substantially hollow cylindrical shape that connects the cylindrical member 28 around the pump. The coupling cylindrical member 30 extends more downwardly and radially outward in the vertical direction than the pump coupling cylindrical member 28. The pair of right and left coupling protrusions 31 are formed in the left and right directions of the portion after the surface of the coupling of the cylindrical member 30 (see FIG. 6), and the coupling protrusions 31 shown in FIG. 3 are formed on the cover body 26 and Coupling above the lowest point of the cylindrical member 30 is coupled to the vertical middle of the downward convex portion of the cylindrical member 30.

The adjuster fitting cylindrical member 33 is formed on the cap body 26 in a shape of a hollow cylinder and extending upward in the vertical direction. The adjuster mating cylindrical member 33 is positioned in front of the coupling cylindrical member 30 and directly adjacent to the coupling cylindrical member 30. The adjuster fitting cylindrical member 33 and the coupling cylindrical member 30 are formed in parallel with each other in the vertical direction. The adjuster fitting cylindrical member 33 is formed into a stepped cylindrical shape having a small diameter upper member and a large diameter lower member. The adjuster is fitted to the lower member of the cylindrical member 33, and the end member and the front end member of the coupling cylindrical member 30 partially overlap each other in the front-rear direction. The amount of the downward convex portion of the cylindrical member 33 from the adjuster of the bottom surface of the cover body 26 is smaller than the amount of the downward convex portion of the coupling cylindrical member 30, but larger than the pump connection cylindrical shape from the bottom surface of the cover body 25. The amount of downward convexity of member 28. Further, the engaging convex portion 34 is formed to extend forward from the front surface of the adjusting member fitting cylindrical member 33 (see Figs. 4 and 6).

On the upper surface side of the cover body 26, a fuel delivery tube member 36 having a straight elongated tube shape is formed on the upper end member of the pump connection cylindrical member 28, and the fuel delivery tube member 36 is connected from the pump connecting cylindrical member 28. The front and rear directions extend backwards. The front end member of the fuel delivery tube member 36 is coupled to the upper end member of the adjuster fitting cylindrical member 33. The inner space of the fuel delivery tube member 36 is in fluid communication with the pump connection cylindrical member 28 and the regulator fitting cylindrical member 33.

As shown in FIG. 5, the first electronic connector component 38 and the second electronic connector component 39 are disposed on the upper surface of the cover body 26. The first electrical connector component 38 is located on the left side and extends to the rear of the pump connection cylindrical component 28. The second electrical connector component 39 is located to the left of the adjuster mating cylindrical member 33 and extends to the front of the adjuster mating cylindrical member 33.

As shown in Fig. 4, the upper end member of the vertically mounted fuel pump 18 is fitted in the coupling cylindrical member 30. The fuel pump 18 is formed in a substantially cylindrical shape having an outer diameter approximately the same as the inner diameter of the coupling cylindrical member 30, and the fuel pump 18 has a fuel suction port 41 on the bottom end side thereof, and on the tip end side thereof There is a fuel discharge 埠 42 (see Figure 5). The fuel pump 18 is a Wesco-type electrically operated pump. In particular, the fuel pump 18 is operated via the drive of the motor and is configured to draw fuel stored in the fuel tank 12 via the fuel intake port 41 and to further pressurize and discharge the fuel from the fuel discharge port 42. The fuel discharge port 42 is fitted inside the circumferential direction of the pump connection cylindrical member 28 and is connected to the pump connection cylindrical member 28. An O-ring 44 is disposed between the pump connection cylindrical member 28 and the fuel discharge port 42 of the fuel pump 18 to connect the cylindrical member 28 to the pump and the fuel discharge port 42 of the fuel pump 18 by the O-ring 44. Sealed between.

The cylindrical pressure regulator 20 is assembled and received within the lower end member of the adjuster fitting cylindrical member 33 that protrudes below the cover body 26. The pressure regulator 20 is a ball valve type pressure regulator. The pressure regulator 20 has a fuel inlet 46 on its upper surface side and an excess fuel outlet 47 on its lower surface side. The pressure regulator 20 controls the pressure of the fuel introduced from the fuel inlet 46 (i.e., the fuel originating from the fuel delivery tube member 36) and is ejected (i.e., discharged for excess fuel from the excess fuel outlet 47). An O-ring 48 is disposed between the adjuster mating cylindrical member 33 and the pressure regulator 20 to seal between the adjuster fitting cylindrical member 33 and the pressure regulator 20. The pressure regulator 20 and the fuel pump 18 are disposed in parallel with each other such that the individual vertical axes of the pressure regulator 20 and the vertical up and down of the fuel pump 18 are parallel to each other.

On the underside of the cover member 16, the pump housing 22 is for receiving the fuel pump 18 therein. Figure 7 is a perspective view of the pump housing 22. Figure 8 is a top view of the pump housing 22. As shown in Fig. 7, the pump casing 22 is made of a resin material and is formed in a cylindrical shape having a closed bottom, and the pump casing 22 has a cylindrical member 50 and a bottom wall member 51, wherein the cylindrical member 50 is hollow. In the cylindrical shape, the bottom wall member 51 surrounds the opening member below the cylindrical member 50. The pair of left and right coupling pieces 53 project upward from the rear periphery of the cylindrical member 50 (see Figs. 5 and 7). On each of the bonding sheets 53, a bonding via 54 is formed in the inner region of the bonding sheet 53.

On the front surface side of the cylindrical member 50, a gauge attachment wall part 56 is formed in the shape of a flat plate. A center gauge (not shown) is attached to the front surface side of the gauge attachment wall member 56. The central gauge is a level gauge for detecting the remaining amount of fuel (ie, the liquid level) in the fuel tank 12.

In the radially central portion of the bottom wall member 51, the filter connecting cylindrical member 58 is formed in the shape of two stepped hollow cylinders extending downward (see Fig. 4). In the lower end member of the cylindrical member 50, the pair of right and left coupling pieces 59 extending downward are symmetrically formed in the left-right direction (the seventh drawing only shows the right coupling piece, and the left and right coupling pieces 59 are for extending through the cylindrical member 50. The vertical axis above the radial center is symmetrical in the left and right direction). The filter connecting cylindrical member 58 is disposed between the coupling pieces 59 such that the coupling pieces 59 are located at a predetermined interval in the left-right direction with respect to the filter connecting cylindrical member 58. Bonding projections 60 extending radially outward in the right/left direction of the right and left coupling pieces 59, respectively, are formed on the outer side surface of each of the bonding pieces 59.

The horizontally extending adjuster support member 62 is integrally formed as one of the front members of the upper end member of the cylindrical member 50 and extends forward from the upper member of the upper member of the cylindrical member 50. The upper end member of the gauge attachment wall member 56 is coupled to the bottom end member of the adjuster support member 62 (see Fig. 4). The regulator support member 62 faces the surface of the pressure regulator 20, which includes an excess fuel outlet 47. The regulator support member 62 corresponds to the "opposing wall member" of the above-described pump casing in the present specification. The lower surface of the pressure regulator 20 corresponds to the above-mentioned "component including excess fuel outlet" and "discharge member" in the present description.

The support projections 63 projecting upward from the upper surface of the adjuster support member 62 are formed in a substantially "C" shape (see Fig. 8). The support projection 63 supports the outer periphery of the lower surface of the pressure regulator 20 to form an excess fuel storage member 64 for storing excess fuel of the excess fuel outlet 47 (see Fig. 4). The open section of the support projection 63 (i.e., the "C" shaped open section) is oriented to the right rear region of the adjuster support member 62. The support projections 63 in the present description correspond to the "excess fuel storage wall member". A coupling piece 65 that protrudes upward is formed at the foremost end of the adjuster support member 62. A bonding via 66 is formed in the interior of the bonding sheet 65.

The excess fuel discharge path 68 is integrally formed between the regulator support member 62 and the coupling cylindrical member 30 by a "U" shaped groove, and the "U" shaped groove is directly adjacent to the excess fuel storage member 64. And fluid is communicated to the excess fuel storage member 64 via the support protrusions 63. The excess fuel discharge path 68 includes a groove bottom member 69, a front groove wall member 70, and a rear groove wall member 71. The groove bottom member 69 includes a first inclined member 69a, a horizontal member 69b, and a second inclined member 69c. The first inclined member 69a is sharply inclined downward from the open section of the support projection 63 in the rear direction. The horizontal member 69b extends almost horizontally from the lowest end member of the first inclined member 69a to the right. The second inclined member 69c is slowly inclined from the end member of the horizontal member 69b (see Fig. 8). The front groove wall member 70 is formed in a vertical plate shape only, and is along the right edge of the first inclined member 69a of the groove bottom member 69, the front edge of the horizontal member 69b, and finally the front edge along the second inclined member 69c. Extend the ground. The rear groove wall member 71 is formed in a vertical plate shape, and is along the left edge of the first inclined member 69a of the groove bottom member 69, the rear edge of the horizontal member 69b, and finally the vertical edge of the second inclined member 69c. extend.

As shown in Fig. 4, the lower portion of the fuel pump 18 is fitted into the cylindrical member 50 of the pump casing 22. The fuel suction port 41 of the fuel pump 18 is fitted in the filter connecting cylindrical member 58, and the fuel suction port 41 of the fuel pump 18 is connected to the filter connecting cylindrical member 58. The coupling perforations 54 of the coupling piece 53 of the cylindrical member 50 are coupled to the cover member 16 via the snap-fit connection due to elastic deformation (that is, the flexural deformation of the bonding piece 53 along the surface of the coupling convex portion 31). The engaging projections 31 of the member 30 are complementarily joined (see Fig. 3). The coupling through hole 66 of the coupling piece 65 of the adjuster supporting member 62 is elastically deformed (that is, the bending deformation of the bonding piece 65 along the surface of the coupling convex portion 34 (see FIG. 2)) via the snap connection and The adjuster of the cover member 16 is complementarily coupled to the engaging projection 34 of the cylindrical member 33. Therefore, the cover member 16 and the pump housing 22 can be fixed to each other in this manner, and the fuel pump 18 is held between the cover member 16 and the pump housing 22. Therefore, the pressure regulator 20 fitted to the adjuster fitting cylindrical member 33 of the cover member 16 is held in place by the support projection 63 of the adjuster support member 62 of the pump casing 22. That is, due to the overall design of the two components of the cover member 16 and the pump housing 22, the pressure regulator 20 is also held (held) when the fuel pump 18 is held (held) between the cover member 16 and the pump housing 22. Between the cover member 16 and the pump housing 22. The excess fuel outlet 47 of the pressure regulator 20 communicates with the excess fuel storage component 64 of the regulator support member 62 and the connected excess fuel discharge path 68.

The lower end member of the pump housing 22 is coupled to the fuel filter 24. The fuel filter 24 includes a filter element 73 and a connecting element 74. The filter element 73 is an element for filtering fuel, and is made of a nonwoven fabric, a mesh material, a filter paper, a woven fiber or the like. The filter element 73 is formed in a bag shape, and the filter element 73 is flat in the vertical direction (that is, it extends horizontally perpendicular to the vertical direction horizontally). The filter element 73 houses the inner support member 75 made of a resin material, and the inner support member 75 can rigidly hold the filter element 73 in the unfolded state.

As shown in Fig. 5, the connecting member 74 is made of a resin material and has a connecting pipe member 77, a flange member 78, and an attaching member 79, wherein the connecting pipe member 77 is formed as a hollow cylinder, and the flange member 78 is formed. The lower end member is formed in the lower end member of the connecting pipe member 77 and is an annular plate, and the attaching member 79 is formed on the outer periphery of the upper portion of the connecting pipe member 77. As shown in Fig. 4, the flange member 78 is disposed above the upper surface of the filter member 73 and presses the surface of the filter member 73 downwardly to be coupled to the inner support member 75 via a snap connection or the like. Specifically, as shown in Fig. 4, the periphery of the filter element 73 defines an attachment hole of the filter element 73, and the periphery of the filter element 73 is held between the flange member 78 and the inner support member 75. The connecting pipe member 77 is fluidly connected to the inner space of the filter member 73. The pair of front and rear coupling holes 80 are formed in the attachment member 79 (see Fig. 5).

As shown in FIGS. 1 and 7, the coupling projection 60 of the coupling piece 59 of the pump casing 22 is connected by a snap fit due to elastic deformation (that is, flexural deformation of the bonding piece 59 along the surface of the coupling hole 80). It is complementary to the bonding hole 80 of the attachment member 79 (see Fig. 3). Thus, the bottom of the pump housing 22 can be coupled to the fuel filter 24 in this manner. Further, the filter connecting cylindrical member 58 of the pump casing 22 is fitted into the connecting pipe member 77 of the connecting member 74 and is connected to the connecting pipe member 77 of the connecting member 74 (see Fig. 4).

Although not illustrated in the drawings, the leads include electrical wires extending from the fuel pump 18 that are electrically coupled to the first electronic connector component 38 on the bottom surface of the cover body 26. The lead wire is coupled to the wire of the central gauge to detect the liquid level and is electrically connected to the second electronic connector component 39.

As shown in Fig. 2, the fuel supply device 10 is mounted in the fuel tank 12 by inserting the fuel supply device 10 through the opening hole 14 of the upper wall member 13 of the fuel tank 12, and then the cover member 16 is attached. To the upper wall member 13 (see Figure 3). When the cover member 16 is attached to the upper wall member 13 in this manner, the cover member 16 is in a state in which the mating wall member 27 of the cover member 16 is fitted to the opening hole 14 of the fuel tank 12, and the outer periphery of the cover body 26 is The radial position is outside the opening hole 14 and depends on the edge portion of the wall member 13 surrounding the opening hole 14. In this manner, the opening 14 of the upper wall member 13 of the fuel tank 12 is completely closed by the cover member 16. The bottom surface of the filter element 73 of the fuel filter 24 is in contact with (without spacing) or adjacent to the bottom surface (not shown) of the fuel tank 12. Although not shown in the drawings, the end member (rear end member) of the fuel delivery tube member 36 positioned above the upper surface side of the cover member 16 is coupled to the fuel supply tube connected to the engine. Furthermore, the first electronic connector component 38 and the second electrical connector component 39 are coupled to an external connector, each of which is connected to a control device (engine control unit (ECU)) .

<Operation of Fuel Supply Device 10> An explanation will be given below regarding the operation of the fuel supply device 10. When the fuel pump 18 is driven, the fuel in the fuel tank 12 is sequentially sucked through the filter member 73, the connecting pipe member 77 of the fuel filter 24, and finally the filter connecting the cylindrical member 58 of the pump casing 22 The fuel pump 18 is then pressurized. The fuel pressurized by the fuel pump 18 in this manner is discharged to the fuel delivery pipe member 36 via the pump connection cylindrical member 28 of the cover member 16, and is then supplied to the engine forward.

The pressure of the fuel supplied to the engine (i.e., the pressure of the fuel in the fuel delivery tube component 36) is controlled by the pressure regulator 20 such that the fuel can be pressurized to a predetermined pressure. The excess fuel in the pressure regulator 20 is discharged from the excess fuel outlet 47 into the excess fuel storage member 64 surrounded by the support projection 63 of the regulator support member 62 of the pump casing 22, and then stored in the excess fuel storage member. 64. Therefore, the excess fuel outlet 47 of the pressure regulator 20 is immersed in the excess fuel stored in the excess fuel storage member 64. The excess fuel flows from the excess fuel storage member 64 through the excess fuel discharge path 68, and is then finally discharged (released) from the discharge side end member of the excess fuel discharge path 68. At this time, when the liquid level of the fuel in the fuel tank 12 is lower than the upper surface of the filter element 73 of the fuel filter 24, excess fuel is discharged (released) from the discharge side end member of the excess fuel discharge path 68. It descends toward the upper surface of the filter element 73 (see the arrow in Fig. 2). When the fuel remaining amount of the fuel tank 12 is small, the fuel supply shortage caused by vibration, acceleration, deceleration, and the movement of such a vehicle can be avoided by this configuration.

<Function and Efficacy of Fuel Supply Device 10> According to the fuel supply device 10, since the excess fuel discharge path 68 is integrally formed as a part of the pump casing 22, an additional component separate from the pump casing 22 is not required to form an excess fuel discharge path. 68, and thus the increase in the number of components can be avoided. Therefore, the increase in the size and cost of the fuel supply device 10 can be avoided, while the durability of the device is increased, and the mechanical integrity and life of the device are improved.

The excess fuel discharged from the excess fuel outlet 47 of the pressure regulator 20 is stored in the excess fuel storage component 64, which acts as a buffer and then flows into the excess fuel discharge path 68. Since the excess fuel outlet 47 of the pressure regulator 20 is immersed in the excess fuel temporarily stored in the excess fuel storage member 64 for buffering, the discharge sound of the excess fuel discharged from the excess fuel outlet 47 can be suppressed. .

The pressure regulator 20 is arranged parallel to the fuel pump 18 such that the excess fuel outlet 47 is oriented downward. Thus, the pressure regulator 20 can be proximate to the fuel pump 18 and the excess fuel outlet 47 can also be adjacent to the filter element 73 of the fuel filter 24. Therefore, the pump casing 22 can be miniaturized.

The pressure regulator 20 is held between the cover member 16 and the pump housing 22. Therefore, in addition to the use of the cover member 16 and the pump housing 22, it is not necessary to use any additional components to hold the pressure regulator 20, and thus the number of components can be prevented from increasing.

The invention is not limited to the embodiment, and modifications may be made without departing from the scope of the invention. For example, in addition to a two-wheeled vehicle, the fuel supply device 10 of the present invention is applicable to various fuel supply devices, such as for vehicles such as automobiles, ships, or industrial machines.

10‧‧‧fuel supply unit

12‧‧‧fuel tank

13‧‧‧Upper wall parts

14‧‧‧Open hole

16‧‧‧ cover components

18‧‧‧ fuel pump

20‧‧‧ Pressure Regulator

22‧‧‧ pump housing

24‧‧‧Fuel filter

26‧‧‧ Cover body

27‧‧‧With wall parts

28‧‧‧ pump connection cylindrical parts

30‧‧‧Coupling cylindrical parts

31‧‧‧Combined convex

33‧‧‧Regulator with cylindrical parts

34‧‧‧Combined convex

36‧‧‧fuel delivery pipe parts

38‧‧‧First electronic connector parts

39‧‧‧Second electronic connector parts

41‧‧‧fuel inhalation埠

42‧‧‧fuel emissions埠

44‧‧‧O-ring

46‧‧‧ fuel inlet

47‧‧‧Excess fuel exports

48‧‧‧O-ring

50‧‧‧Cylindrical parts

51‧‧‧ bottom wall parts

53‧‧‧Joint film

54‧‧‧Combined perforation

56‧‧‧Adhesive wall parts

58‧‧‧Filter connecting cylindrical parts

59‧‧‧Joint film

60‧‧‧ Combined with convex

62‧‧‧Regulator support parts

63‧‧‧Support convex

64‧‧‧Excess fuel storage components

65‧‧‧Joint film

66‧‧‧Combined through hole

68‧‧‧Excess fuel emission path

69‧‧‧Slot bottom parts

69a‧‧‧First tilting unit

69b‧‧‧ horizontal parts

69c‧‧‧Second inclined parts

70‧‧‧ front groove wall parts

71‧‧‧Back groove wall parts

73‧‧‧Filter components

74‧‧‧Connecting components

75‧‧‧Inner support element

77‧‧‧Connecting pipe parts

78‧‧‧Flange parts

79‧‧‧Adhesive parts

80‧‧‧bond hole

Fig. 1 is a perspective view of a fuel supply device according to an embodiment. Figure 2 is a front view of the fuel supply unit. Figure 3 is a right side view of the fuel supply unit. Figure 4 is a cross-sectional side view of the fuel supply unit. Figure 5 is a perspective view of the fuel supply device in an exploded state. Figure 6 is a bottom view of the cover member of the fuel supply unit. Figure 7 is a perspective view of the pump housing of the fuel supply unit. Figure 8 is a top view of the pump housing.

Claims (5)

A fuel supply device comprising: a cover member for closing an opening of an upper wall member of a fuel tank; a fuel pump configured to draw a fuel from the fuel tank and discharge the fuel; a pump housing, holding The fuel pump is attached to the cover member; a fuel filter comprising a bag filter element for filtering the fuel sucked into the fuel pump; and a pressure regulator configured Controlling the pressure of the fuel discharged from the fuel pump and including discharging one of the excess fuel outlets; wherein the excess fuel discharge discharged from the excess fuel outlet faces an excess fuel discharge path of the filter element Formed as part of the pump housing. A fuel supply device according to claim 1, wherein the pressure regulator has a discharge member including the excess fuel outlet; wherein the pump casing includes a pair of wall members, the opposite wall member facing the pressure The discharge member of the regulator; wherein the opposite wall member includes an excess fuel storage wall member that supports the discharge member of the pressure regulator; and wherein the excess fuel storage wall member forms an excess fuel A storage component for immersing the excess fuel outlet in the excess fuel stored therein, and thereby communicating the excess fuel outlet with the excess fuel discharge path. The fuel supply device of claim 1, wherein the pressure regulator is disposed parallel to the fuel pump such that the excess fuel outlet is oriented downward. The fuel supply device of claim 2, wherein the pressure regulator is disposed parallel to the fuel pump such that the excess fuel outlet is oriented downward. A fuel supply device according to any one of claims 1 to 4, wherein the pressure regulator is held between the cover member and the pump casing.