WO2018193739A1

WO2018193739A1 - Fuel supply device

Info

Publication number: WO2018193739A1
Application number: PCT/JP2018/008795
Authority: WO
Inventors: 崇蟹江; 浩哉阿部; 昌一郎小野田
Original assignee: 愛三工業株式会社
Priority date: 2017-04-20
Filing date: 2018-03-07
Publication date: 2018-10-25
Also published as: JP2018178953A

Abstract

This fuel supply device (10) is provided with: a closed-end cylindrical reservoir cup (14) which, within a fuel tank, contains fuel; a filter member (44) disposed within the reservoir cup (14); and a jet pump (50) for supplying into the reservoir cup (14), the fuel within the fuel tank. The filter member (44) has a bag-like filtration member (87) for filtering fuel sucked into a fuel pump (42). The reservoir cup (14) has provided therein a fuel guide wall (34) which forms a circumferentially extending guide flow passage (36) between the fuel guide wall (34) and a sidewall (26) of the reservoir cup (14). The jet pump (50) is disposed so as to discharge fuel from one end side of the guide flow passage (36) toward the other end side. The filtration member (87) is disposed so as to face the sidewall (26) of the reservoir cup (14) and to allow fuel discharged from the guide flow passage (36) to flow between the sidewall (26) and the filtration member (87).

Description

Fuel supply device

The present disclosure relates to a fuel supply apparatus.

Japanese Patent Laid-Open No. 2008-255917 discloses an example of a conventional fuel supply device. The fuel supply device includes a bottomed cylindrical reserve cup that stores fuel in a fuel tank, and a filter member that is disposed in the reserve cup. The filter member has a bag-shaped filter member that filters the fuel sucked into the fuel pump. The filtering member is disposed so as to face the side wall portion of the reserve cup. A jet pump is disposed in a notch formed in the filter member.

According to the conventional structure, the filter member of the filter member has a surface facing the side wall portion of the reserve cup, and foreign substances attached to the surface are difficult to peel off from the filter member. Therefore, the filter member is likely to be clogged. Therefore, a fuel supply device that can suppress clogging of the filter member of the filter member has been conventionally required.

According to one feature of the present disclosure, the fuel supply device includes a reserve cup, a filter member, and a jet pump. The reserve cup has a bottomed cylindrical shape for storing fuel in the fuel tank. The filter member has a bag-shaped filter member that is disposed in the reserve cup and filters the fuel sucked into the fuel pump. The jet pump supplies the fuel in the fuel tank into the reserve cup. In the reserve cup, a fuel guide wall portion is provided that forms a guide channel extending in the circumferential direction between the reserve cup and the side wall portion. The jet pump is disposed so as to discharge fuel from one end side of the guide channel toward the other end side. The filter member of the filter member faces the side wall portion of the reserve cup and is arranged so that the fuel discharged from the guide channel flows between the side wall portion.

Therefore, when the jet pump discharges the fuel from one end side of the guide channel toward the other end side, the fuel flows between the other end portion of the guide channel and the side wall portion of the reserve cup and the filter member of the filter member. . Due to the fuel flow, foreign substances can be removed from the surface of the filtration member facing the side wall of the reserve cup. Therefore, clogging of the filter member of the filter member can be suppressed.

According to another feature of the present disclosure, one end of the filter member of the filter member is disposed so as to overlap a surface of the fuel guide wall opposite to the guide channel. Therefore, the fuel is discharged from the guide channel without being obstructed by one end of the filter member, and the fuel is discharged between the side wall portion of the reserve cup and the filter member of the filter member. Thereby, a foreign material can be efficiently removed from the surface of the filtration member.

According to another feature of the present disclosure, the side wall portion of the reserve cup facing the filtering member of the filter member is formed with a protruding portion that protrudes inward. Therefore, sticking of the filter member to the side wall portion can be suppressed by the protruding portion. As a result, a decrease in the flow rate of the fuel discharged from the guide channel can be suppressed.

It is a perspective view of the fuel supply apparatus concerning one Embodiment. It is a front view of a fuel supply apparatus. It is a perspective view of the cover member and pump unit of a fuel supply apparatus. It is a top view of a pump unit. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. FIG. 7 is a sectional view taken along line VII-VII in FIG. 6. It is a perspective view of the reserve cup and pump module of a pump unit. It is a top view of a reserve cup. It is a perspective view from the rear upper direction of a pump module. It is a bottom view of a pump module. It is a disassembled perspective view of a pump module. It is a top view of a pump holder. FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. 13. FIG. 15 is a cross-sectional view taken along line XV-XV in FIG. 14. It is a top view which sees through and shows the inside of a pump unit. It is a perspective view which fractures | ruptures a part of reserve cup and shows a fuel guide wall part. It is a perspective view which fractures | ruptures a part of a reserve cup and shows a protrusion part.

A fuel supply device 10 according to an embodiment will be described with reference to the drawings. A vehicle such as an automobile is provided with an engine (internal combustion engine) and a fuel tank 12. As shown in FIG. 2, the fuel supply device 10 is provided in the fuel tank 12 and supplies the fuel in the fuel tank 12 to the engine. Arrows in the figure indicate directions in a state where the fuel supply device 10 is mounted on the fuel tank 12. The vertical direction corresponds to the direction of gravity and the opposite direction. The front / rear / left / right directions are set for convenience and do not specify the direction of the fuel supply system relative to the vehicle.

As shown in FIG. 2, the fuel supply device 10 is installed in a fuel tank 12. A reserve cup 14 is disposed in the fuel tank 12. The fuel supply device 10 supplies the fuel stored in the reserve cup 14 to the engine outside the fuel tank 12. The fuel tank 12 is, for example, a resin-made hollow container, and has a horizontal upper wall portion 12a and a lower wall portion 12b that are parallel in the vertical direction. A circular opening 13 is formed in the upper wall portion 12a. The fuel is a liquid fuel such as gasoline.

As shown in FIGS. 1 to 3, the fuel supply device 10 includes a lid member 16 and a pump unit 18. The lid member 16 is made of resin and has a disk shape. The lid member 16 is attached to the upper wall portion 12a so as to close the opening 13 of the fuel tank 12 in a sealed state. The lid member 16 includes a fuel discharge pipe 20 and an electrical connector 22. Although not shown, a fuel supply pipe for supplying fuel to the engine is connected to the fuel discharge pipe 20 on the upper surface side of the lid member 16. An external connector (not shown) connected to an external power source is connected to the electrical connector 22. The fuel discharge pipe 20 supplies the fuel discharged from the fuel pump 42 on the pump unit 18 side to a fuel supply pipe connected to the engine. The electrical connector 22 supplies power from the external connector into the fuel tank 12. Parts other than the lid member 16 of the fuel supply device 10 are accommodated in the fuel tank 12.

As shown in FIG. 8, the pump unit 18 includes a reserve cup 14 and a pump module 24 (see FIGS. 3 and 5). The reserve cup 14 is a bottomed cylindrical container made of resin, for example, and has a D-shaped cylindrical side wall portion 26 and a bottom wall portion 28 that closes the lower surface opening of the side wall portion 26 ( (See FIG. 9). The side wall portion 26 includes a C-shaped cylindrical semi-cylindrical wall portion 26a and a flat plate-like flat wall portion 26b. The flat wall-shaped portion 26b of the side wall portion 26 is directed forward.

As shown in FIG. 2, the reserve cup 14 is placed on the lower wall portion 12 b of the fuel tank 12. A large number of protrusions 28a for securing a predetermined gap between the bottom wall portion 28 and the lower wall portion 12b protrude from the outer peripheral portion of the lower surface of the bottom wall portion 28 at a predetermined interval in the circumferential direction. . Although not shown, a liquid level gauge for detecting the remaining amount of fuel in the fuel tank 12, for example, a float type sender gauge (specifically, a main body) can be attached to the front side surface of the flat wall portion 26b of the side wall portion 26. Has been. The lead wire extending from the main body can be electrically connected to the electrical connector 22.

As shown in FIG. 8, a pair of left and right hollow cylindrical guide tube portions 30 extending in the vertical direction are formed on the front side surface of the flat wall portion 26b. As shown in FIG. 9, a horizontally elongated fuel inlet 32 is formed at the left front end of the bottom wall portion 28. On the front portion of the bottom wall portion 28, a fuel guide wall portion 34 is formed in a vertical wall shape.

As shown in FIG. 17, the fuel guide wall portion 34 extends along the flat wall portion 26b of the reserve cup 14 and the right front portion of the semi-cylindrical wall portion 26a with a predetermined interval. The fuel guide wall portion 34 has a base end portion 34a on the left side (right side in FIG. 17) and a tip end portion 34b on the right side (left side in FIG. 17). As shown in FIG. 9, the base end portion 34 a of the fuel guide wall portion 34 is connected to the flat wall-shaped portion 26 b so as to surround the fuel inflow port 32. A guide channel 36 extending in the circumferential direction is formed between the flat wall-shaped portion 26b and the semi-cylindrical wall-shaped portion 26a. The guide channel 36 is formed from the front left end portion to the right center portion in the inner peripheral portion of the reserve cup 14. The fuel guide wall 34 has a height of about 1/3 of the depth of the reserve cup 14 (see FIGS. 5 to 7).

As shown in FIGS. 2 and 3, two connecting shafts 38 are provided between the reserve cup 14 and the lid member 16 so as to connect both the

members

14 and 16 so as to extend and contract in the vertical direction. The connecting shaft 38 is, for example, a metal solid shaft member or a hollow shaft member. One end (upper end) of each connecting shaft 38 is attached to the lid member 16 in a suspended manner by press fitting. The other end portion (lower end portion) of each connecting shaft 38 is inserted into each guide tube portion 30 of the reserve cup 14 so as to be slidable within a predetermined range in the axial direction (vertical direction). Thereby, the pump unit 18 is connected to the lid member 16 so as to be extendable in the vertical direction.

2 and 3, a spring 39 made of, for example, a metal coil spring is fitted on one side (for example, the left side) of the connecting shaft 38. The spring 39 is interposed between the lid member 16 and the guide cylinder portion 30. The spring 39 biases the reserve cup 14 and the lid member 16 in a direction away from each other. That is, the pump unit 18 including the reserve cup 14 is elastically pressed against the lower wall portion 12 b of the fuel tank 12 by the urging force of the spring 39. Therefore, even if the fuel tank 12 expands and contracts due to a change in internal pressure or a change in the amount of fuel due to a temperature change, the reserve cup 14 always remains pressed against the lower wall portion 12b.

As shown in FIG. 3, in the pump unit 18, the pump module 24 is assembled to the reserve cup 14 (see FIGS. 4 to 6 and FIG. 8). As shown in FIG. 12, the pump module 24 is constructed by assembling a fuel pump 42, a filter member 44, a pressure regulating valve 46, a relay pipe 48, and a jet pump 50 to a pump holder 40 (FIGS. 8 and 10). And FIG. 11). The

parts

42, 44, 46, 48, 50 assembled to the pump holder 40 are accommodated in the reserve cup 14 by the pump module 24 being assembled to the reserve cup 14 (see FIGS. 3 to 6).

As shown in FIG. 14, the pump holder 40 is made of resin and includes a pump case 52, a fuel pipe portion 54, a support lid portion 56, and a support arm portion 58 (see FIG. 13). The support lid portion 56 and the support arm portion 58 constitute a support member 55. The pump case 52 is formed in a cylindrical shape.

As shown in FIG. 5, the fuel pipe 54 is formed in an inverted L-shaped tube. The fuel pipe part 54 includes a vertical pipe part 60 arranged side by side on the one side (left side) of the pump case 52 and a horizontal pipe part extending rightward from the upper end part of the vertical pipe part 60 so as to cross the upper side of the pump case 52. 62. A fuel discharge portion 63 is formed at the distal end portion (right end portion) of the horizontal tube portion 62. In the pump unit 18, the fuel discharge part 63 and the fuel discharge pipe 20 of the lid member 16 are connected via a flexible communication pipe 65 (see FIG. 1).

As shown in FIG. 5, the central portion in the axial direction of the horizontal tube portion 62 is connected to the upper end portion of the pump case 52 via a connecting tube portion 67. The vertical tube portion 60 is formed in an inner / outer double cylinder shape including an inner tube portion 70 and an outer tube portion 72 extending downward from the left end portion of the horizontal tube portion 62. A flat front wall portion 73 (see FIG. 8) that is continuous with the front side portion of the inner tube portion 70 is formed on the upper portion of the outer tube portion 72. As shown in FIGS. 6 and 8, an excess fuel lead-out pipe 75 protruding forward is formed at the lower part of the front wall portion 73. The surplus fuel outlet pipe 75 communicates with the inner pipe portion 70.

As shown in FIG. 5, the C-shaped cylindrical space between the inner tube portion 70 and the outer tube portion 72 is communicated with the inner space of the horizontal tube portion 62. At the lower end portion of the outer tube portion 72, an adjustment valve mounting tube portion 77 extending downward from the lower end portion of the inner tube portion 70 is formed. The adjusting valve mounting pipe portion 77 is formed in a stepped cylindrical shape whose diameter is expanded in two steps downward.

As shown in FIG. 4, the support lid portion 56 of the support member 55 is formed in an annular plate shape that can close the inner peripheral portion of the upper surface opening of the reserve cup 14. As shown in FIG. 3, in the pump unit 18, the support lid portion 56 is attached to the upper end portion of the side wall portion 26 by snap fit engagement so as to cover the peripheral edge portion of the upper surface opening portion of the reserve cup 14. The snap-fit engagement is an engagement structure that connects two members in a retaining state by elastic engagement such as a claw.

As shown in FIG. 13, the support member 55 has a plurality of (for example, three) support arm portions 58 that radially extend and connect between the upper end portion of the pump case 52 and the inner peripheral portion of the support lid portion 56. is doing. Thereby, the pump case 52 is elastically supported by the support lid portion 56.

In FIG. 12, the fuel pump 42 is a Wesco-type electric fuel pump. The pump main body 80 of the fuel pump 42 is formed in a substantially cylindrical shape, and includes a pump part and a motor part. The fuel pump 42 generates a fuel suction input by rotating a rotating member such as an impeller of the pump unit by driving the motor unit. The fuel pump 42 has a fuel suction port 82 for sucking fuel at one end (lower end) of the pump main body 80, and a fuel discharge port 84 for discharging fuel at the other end (upper end) of the pump main body 80. is doing. A power connector portion 85 is provided at the upper end of the pump body 80.

As shown in FIG. 5, the fuel pump 42 is housed vertically in a pump case 52 with the fuel discharge side on the vertical upper side and the fuel suction side on the vertical lower side. The fuel discharge port 84 is connected to the connecting cylinder portion 67 of the pump holder 40 by fitting. As shown in FIG. 10, the power connector 85 of the fuel pump 42 is exposed from the upper end opening of the pump case 52. As shown in FIG. 3, the power connector 85 and the electrical connector 22 of the lid member 16 are connected via a wiring member (not shown).

As shown in FIG. 5, the filter member 44 includes a filtration member 87, an inner bone member 89, and a connection pipe 91. The filter member 87 is formed in a bag shape by a filter medium for filtering fuel. The filter medium is made of, for example, a resin nonwoven fabric, a mesh material, or the like. As shown in FIGS. 10 and 11, the filter member 87 is arranged in a curved state so as to surround or cover the periphery (specifically, the rear half surface) of the fuel pump 42 via the pump case 52. Has been. The filter member 87 has a base end portion 87b on one side (right side) in the circumferential direction and a tip end portion 87a on the other side (left side) in the circumferential direction. The proximal end portion 87 b is close to the connection pipe 91 side, and the distal end portion 87 a is far from the connection pipe 91.

As shown in FIG. 5, the inner bone member 89 is made of resin and is formed in a flexible skeleton shape. The inner bone member 89 is provided in the internal space of the filtering member 87 and maintains the distance between the inner peripheral side portion and the outer peripheral side portion of the filtering member 87. The filter member 87 has a long rectangular plate shape, and is curved so that the longitudinal direction is along the circumferential direction of the pump body 80. The filtering member 87 is bent into a curved shape by using the flexibility of the inner bone member 89.

As shown in FIG. 5 and FIG. 11, the connection pipe 91 is made of resin and has a tubular body portion 92 formed in an elbow shape and an attachment portion 93 formed at one end (upper end portion) of the tubular body portion 92. And have. The other end portion (lower end portion) of the tubular body portion 92 penetrates the inner peripheral side portion of the filtration member 87 and communicates with the internal space of the filtration member 87. Specifically, the other end portion of the tube portion 92 penetrates the inner peripheral side portion of the filtering member 87 at the lower end portion of the base end portion 87 b of the filtering member 87. The other end of the tubular body 92 is coupled to the inner bone member 89 in the internal space of the filtration member 87. The attachment portion 93 of the connection pipe 91 is attached to the lower end portion of the pump case 52 of the pump holder 40 by snap fit engagement. Accordingly, the fuel pump 42 is prevented from coming off from the pump case 52, and the fuel inlet 82 of the fuel pump 42 is connected to the pipe body 92 by fitting.

As shown in FIG. 16, the tip 34 b of the fuel guide wall 34 has an outer peripheral surface that faces the guide flow path 36 and an inner peripheral surface that faces the filter member 44. The outer peripheral surface of the base end portion 87 b of the filter member 87 of the filter member 44 is in contact with the inner peripheral surface of the tip end portion 34 b of the fuel guide wall portion 34.

As shown in FIG. 16, the outer peripheral surface of the intermediate portion 87 c between the distal end portion 87 a and the proximal end portion 87 b of the filter member 87 is the inner periphery of the semi-cylindrical wall-shaped portion 26 a of the side wall portion 26 of the reserve cup 14. Face to face. The intermediate portion 87 c is disposed with a slight gap between the intermediate portion 87 c and the semicylindrical wall-shaped portion 26 a of the side wall portion 26.

16, the inner wall surface of the semi-cylindrical wall-shaped portion 26a of the side wall portion 26 of the reserve cup 14 faces the outer peripheral surface of the intermediate portion 87c of the filter member 87. A plurality of (for example, three) projecting portions 94 projecting inward are formed on the inner wall surface of the semi-cylindrical wall-shaped portion 26a (see FIG. 9).

As shown in FIG. 18, the protrusions 94 are made of linear ribs extending in the vertical direction, and are arranged at a predetermined interval from each other. The lower end portion of the protruding portion 94 is disposed at a position slightly away from the bottom wall portion 28 of the reserve cup 14. The upper end portion of the protruding portion 94 is disposed at a position slightly away from the upper end of the semi-cylindrical wall-shaped portion 26 a of the reserve cup 14. The protrusion 94 is formed, for example, in a semicircular cross section.

As shown in FIG. 12, the pressure adjustment valve 46 adjusts the pressure of the fuel discharged from the fuel pump 42 to a predetermined pressure. The pressure regulating valve 46 includes a pair of upper and lower case halves 96 and 97 that form a casing 95 that is a hollow cylindrical container. Both case halves 96 and 97 are joined with a diaphragm (not shown) sandwiched therebetween. A flange portion 98 projecting in an annular shape is formed on the outer peripheral portion of the joint portion between the case halves 96 and 97. A surplus fuel discharge pipe 100 that discharges surplus fuel protrudes from a central portion of the upper surface wall portion of the upper case half 96. A fuel inlet 102 is formed in the upper wall of the upper case half 96.

As shown in FIGS. 5 and 6, the pressure adjustment valve 46 is accommodated in the adjustment valve attachment pipe portion 77 of the fuel pipe portion 54 of the pump holder 40. The flange portion 98 is prevented from coming off by snap-fit engagement with the adjusting valve mounting tube portion 77. The fuel introduction port 102 (see FIG. 12) communicates with a space portion between the inner pipe portion 70 and the outer pipe portion 72 of the fuel pipe portion 54. The surplus fuel discharge pipe 100 is communicated with the inner pipe portion 70 by insertion.

As shown in FIG. 6, the relay pipe 48 is formed in an inverted L-shaped tube. The upper end portion of the relay pipe 48 is fitted to the surplus fuel lead-out pipe 75 of the pump holder 40 and connected by snap-fit engagement.

As shown in FIG. 7 and FIG. 12, the jet pump 50 uses the surplus fuel supplied from the surplus fuel lead-out pipe 75 via the relay pipe 48 to feed the fuel in the fuel tank 12 into the reserve cup 14. To supply. The jet pump 50 includes a pump housing 105 that forms a chamber 106, a fuel introduction pipe 107 that extends upward from the pump housing 105, and a fuel outlet pipe 108 that extends laterally (rightward) from the pump housing 105. Yes. The pump housing 105 is formed with a nozzle 109 that ejects surplus fuel into the chamber 106. The fuel introduction pipe portion 107 is connected to the lower end portion of the relay pipe 48.

As shown in FIG. 6, the pump housing 105 is fitted between the flat wall portion 26 b of the reserve cup 14 and the base end portion 34 a of the fuel guide wall portion 34. As a result, the chamber 106 is communicated with the fuel inlet 32 of the reserve cup 14. The fuel inflow port 32 is formed in the bottom wall portion 28 and opens to the bottom wall portion 28. The bottom wall portion 28 is formed with a large number of protrusions 28a protruding downward, and gaps are formed between the bottom wall portion 28 and the lower wall portion 12b (see FIG. 2) of the fuel tank 12 by the protrusions 28a. Yes. Since the gap and the fuel inlet 32 communicate with each other, fuel can be introduced into the reserve cup 14 from the outside of the reserve cup 14.

7 and 16, the fuel outlet pipe portion 108 has an open end facing rightward at the lower end portion of the guide flow path 36. The fuel outlet pipe portion 108 is sandwiched between the flat wall portion 26 b of the reserve cup 14 and the base end portion 34 a of the fuel guide wall portion 34. The jet pump 50 discharges fuel from the fuel outlet pipe portion 108 toward the other end side (right end side) of the guide flow path 36.

As shown in FIG. 7, a branch pipe portion 110 that protrudes to the side (right side) is formed at the center in the vertical direction of the fuel introduction pipe portion 107. The branch pipe portion 110 is used when surplus fuel is supplied to another jet pump (not shown), and is not used in this embodiment, and is closed by a plug (not shown) or the like.

Next, the operation of the fuel supply device 10 will be described. As shown in FIG. 5, the fuel pump 42 operates to suck the fuel in the reserve cup 14 through the filter member 44. Subsequently, the fuel pump 42 pressurizes the sucked fuel and discharges it into the horizontal pipe portion 62 of the fuel pipe portion 54. As shown in FIG. 2, the pressurized fuel is supplied to the engine from the fuel discharge pipe 20 of the lid member 16 via the communication pipe 65. The pressure of the fuel supplied to the engine is regulated by a pressure regulating valve 46 shown in FIG. In the pressure adjusting valve 46, the pressure of the fuel in the space between the inner pipe part 70 and the outer pipe part 72 of the fuel pipe part 54, that is, the pressure of the fuel flowing in the horizontal pipe part 62 of the fuel pipe part 54 is higher than a predetermined pressure. When it becomes higher, the fuel is discharged from the surplus fuel discharge pipe 100 through the inner pipe portion 70 to the surplus fuel outlet pipe 75.

As shown in FIG. 6, the surplus fuel discharged from the surplus fuel outlet pipe 75 is supplied from the relay pipe 48 to the fuel introduction pipe portion 107 of the jet pump 50. Excess fuel is ejected from the nozzle 109 into the chamber 106, thereby generating a negative pressure in the chamber 106. Due to the negative pressure, fuel outside the reserve cup 14 is sucked into the chamber 106 through the fuel inlet 32. The sucked fuel is discharged from the fuel outlet pipe portion 108 to the guide passage 36 in the reserve cup 14 together with the jet flow jetted from the nozzle 109. As a result, fuel is supplied into the reserve cup 14.

As shown in FIG. 16, the fuel discharged from the jet pump 50 passes through the guide flow path 36 and is discharged toward the gap between the side wall portion 26 of the reserve cup 14 and the filter member 87 of the filter member 44. Is done. That is, the fuel discharged from the guide channel 36 flows between the side wall portion 26 of the reserve cup 14 and the filter member 87 of the filter member 44.

As shown in FIG. 13, the support member 55 includes a support lid portion 56 and three support arm portions 58. The support lid portion 56 is attached to the reserve cup 14 so as to cover the peripheral edge portion of the upper surface opening of the reserve cup 14 (see FIGS. 4 to 6). The peripheral edge portion of the support lid portion 56 is the reserve cup 14. Is in contact with the upper end surface of the side wall portion 26.

As shown in FIG. 13, the three support arm portions 58 are arranged at equal intervals in the circumferential direction. The three support arm portions 58 have one end connected to the pump case 52 and the other end connected to the inner peripheral portion of the support lid portion 56. The three support arm portions 58 are arranged on the front side, the left rear side, and the right rear side of the pump case 52. Since the three support arm portions 58 have basically the same configuration, the same reference numerals are given to the same portions. As shown in FIG. 14, the support arm portion 58 includes a first portion 112 on the pump case 52 side and a second portion 114 on the support lid portion 56 side.

As shown in FIG. 14, the first portion 112 is in the shape of a strip and formed in an inverted U shape, and has an inner vertical piece 116, a curved portion 117, and an outer vertical piece 118. The lower end of the front inner vertical piece 116 shown on the left side of FIG. 14 is curved and connected toward the front side of the pump case 52. The right rear inner vertical piece 116 and the left rear inner vertical piece 116 (see FIG. 13) shown on the right side of FIG. 14 are formed between the pair of split grooves 120. The pair of split grooves 120 extend downward from the upper end surface of the pump case 52 and are formed at the upper end portion of the pump case 52. The curved portion 117 is curved upward from the upper end portion of the inner vertical piece 116 toward the radially outer side of the pump case 52. The outer vertical piece portion 118 extends downward from the outer end portion of the curved portion 117 and is parallel to the inner vertical piece portion 116. The first portion 112 is formed so as to be able to bend and deform in the radial direction of the pump case 52 so-called elastically deformable. The lower end of the outer vertical piece 118 can be displaced in the radial direction of the pump case 52 by elastic deformation of the first portion 112.

As shown in FIG. 15, the second portion 114 is formed in a U-shaped plate shape that is coplanar with the outer vertical piece 118, and has a horizontal piece 122 and a pair of both vertical pieces 123. Yes. The central portion of the horizontal piece portion 122 is connected to the outer vertical piece portion 118. Both vertical piece portions 123 extend upward from both end portions of the horizontal piece portion 122. The upper end portions of both vertical piece portions 123 are connected to the support lid portion 56 (see FIGS. 13 and 14). The second portion 114 is formed in a W shape including the outer vertical piece portion 118 of the first portion 112. The second portion 114 can be bent and deformed in the radial direction of the pump case 52 so as to be elastically deformable. Has been. By the elastic deformation of the second portion 114, the horizontal piece 122, that is, the lower end of the outer vertical piece 118 can be displaced in the radial direction of the pump case 52.

4 and 10, the second portion 114 on the left rear side and the right rear side is disposed radially outward of the filter member 87 in plan view. That is, the filtration member 87 is disposed radially inward of the second portion 114 in plan view. The support arm portion 58 is located above the filtering member 87. Therefore, the support arm portion 58 and the filtering member 87 are arranged with a positional relationship that does not interfere with each other.

As shown in FIG. 10, the filter holding member 125 holds the filter member 87 of the filter member 44 so as not to contact the reserve cup 14. The filter holding member 125 is disposed below the adjustment valve attachment pipe 77 in the fuel pipe 54 of the pump holder 40. As shown in FIGS. 10 and 14, the filter holding member 125 has a horizontally long rectangular plate shape, and one end portion (base end portion) 125 a of the filter holding member 125 has an arc plate shape extending downward from the left side portion of the adjustment valve mounting pipe portion 77. Is formed. The filter holding member 125 has a vertical wall shape extending from the base end portion 125a in the tangential direction, that is, obliquely rearward and rightward.

10 and 11, the filter holding member 125 is formed integrally with the pump holder 40 by integral molding. The tip end portion 125 b of the filter holding member 125 holds the tip end portion 87 a of the filtration member 87. The tip end portion 125 b of the filter holding member 125 is in contact with the outer peripheral surface of the tip end portion 87 a of the filtration member 87.

As shown in FIG. 4, the filter holding member (filter shape holding member) 125 holds the filtering member 87 in a state of surrounding the pump case 52 containing the fuel pump 42, that is, in a curved state. Thereby, the movement of the distal end portion 87a of the filter member 87 in the developing direction (radially outward of the pump case 52) due to the elastic restoring force of the inner bone member 89 (see FIG. 5) is suppressed, and the distal end portion of the filter member 87 87 a is held so as not to contact the reserve cup 14. As shown in FIG. 12, the adjustment valve attachment pipe part (tubular part) 77 is tubular having an axis parallel to the axis of the fuel pump 42.

16, the jet pump 50 discharges fuel from one end side of the guide flow path 36 toward the other end side. The fuel discharged from the guide channel 36 flows between the side wall portion 26 of the reserve cup 14 and the filter member 87 of the filter member 44. Due to the fuel flow, foreign matter can be removed from the surface of the filtering member 87 facing the side wall portion 26 of the reserve cup 14. Therefore, clogging of the filter member 87 of the filter member 44 can be suppressed. As a result, the pressure loss by the filter member 87 can be reduced, and the performance deterioration of the filter member 44 and the flow rate performance of the fuel pump 42 can be suppressed.

As shown in FIG. 16, one end of the filter member 87 is disposed so as to overlap the surface of the fuel guide wall 34 opposite to the guide channel 36. Therefore, the fuel discharged from the guide channel 36 can be discharged between the side wall portion 26 of the reserve cup 14 and the filter member 87 of the filter member 44 without being obstructed by one end of the filter member 87. Thereby, foreign matters can be efficiently removed from the surface of the filter member 87.

As shown in FIG. 16, a protruding portion 94 that protrudes inward is formed on the side wall portion 26 of the reserve cup 14 that faces the filtering member 87 of the filter member 44. Therefore, sticking of the filter member 87 to the side wall portion 26 can be suppressed by the protruding portion 94 formed on the side wall portion 26 of the reserve cup 14. As a result, a decrease in the flow rate of the fuel discharged from the guide flow path 36 can be suppressed. As a result, the fall of the foreign material removal performance can be suppressed.

As shown in FIGS. 5 and 10, the support member 55 includes a support lid portion 56, and the support lid portion 56 is attached to the reserve cup 14 so as to cover the peripheral edge portion of the upper surface opening of the reserve cup 14. For this reason, the support cover part 56 can improve the rigidity of the attachment part to the reserve cup 14 of the support member 55, and can suppress the deformation | transformation of the attachment part.

As shown in FIG. 14, the support arm portion 58 includes a first portion 112 including a curved portion 117 extending in the radial direction of the pump case 52, and is connected to one end portion of the first portion 112 and extends in the axial direction of the pump case 52. And a second portion 114 extending along. Therefore, the vibration transmitted from the pump case 52 to the reserve cup 14 is absorbed by the cooperation of the elastic deformation (flexure deformation) of the first portion 112 of the support arm portion 58 and the elastic deformation (flexure deformation) of the second portion 114. In addition, the vibration transmissibility can be reduced.

As shown in FIGS. 5 and 12, the filter member 44 has a bag-like filter member 87 that is connected to the fuel inlet 82 of the fuel pump 42 and filters the fuel. The filter member 87 is arranged in a curved state so as to surround the pump case 52. Therefore, the radiated sound radiated by the operation of the fuel pump 42 is absorbed by the filter member 87, and the noise can be reduced.

As shown in FIG. 10, the filtering member 87 is arranged in a curved state so as to surround the pump case 52. Thereby, the filtration area of the filtration member 87 can be increased while arranging the filtration member 87 in the reserve cup 14 in a compact manner.

4 and 10, the filtering member 87 is disposed radially inward of the second portion 114 of the support arm portion 58 in plan view. Therefore, it is possible to prevent the vibration of the filter member 87 from being directly transmitted to the reserve cup 14 by arranging the filter member 87 so as not to contact the reserve cup 14.

As shown in FIG. 10, the upper portion of the filtering member 87 is located below the support arm portion 58. Instead of this, the filtering member 87 may have a portion (upper end portion) accommodated in the first portion 112 of the support arm portion 58. Thereby, the freedom degree of arrangement | positioning of the filtration member 87 improves. Alternatively, the filtration area of the filter member 87 can be increased.

As shown in FIG. 13, one end portion of the first portion 112 of the support arm portion 58 is connected to the pump case 52. One end portion of the second portion 114 of the support arm portion 58 is connected to the support lid portion 56. As shown in FIG. 14, the support arm portion 58 has an inverted U-shape formed between the inner vertical piece portion 116 and the outer vertical piece portion 118 of the first portion 112. You may arrange | position so that a part (upper end part) of the filtration member 87 may enter between the inner side vertical piece part 116 and the outer side vertical piece part 118 (refer FIG. 10). In this case, the degree of freedom of layout in the reserve cup 14 can be improved.

As shown in FIG. 14, the first portion 112 of the support arm portion 58 may be U-shaped or may have a shape other than the U-shape. As shown in FIG. 10, the second portion 114 of the support arm portion 58 may have a W shape or may have a shape other than the W shape. As shown in FIG. 12, the filter member 44 is arranged in a curved state by elastically bending a plate-shaped inner bone member 89. Instead, the inner bone member 89 and the filter member 44 may be curved in a free state. The number of protrusions 94, the outer shape, the cross-sectional shape, and the like may be appropriately changed.

The various embodiments described above in detail with reference to the accompanying drawings are representative examples of the present invention and do not limit the present invention. The detailed description teaches those skilled in the art to make, use, and / or practice various aspects of the present teachings and is not intended to limit the scope of the invention. Further, each additional feature and teaching described above may be applied and / or used separately or in conjunction with other features and teachings to provide an improved fuel supply device and / or method of manufacture and use thereof. Is what you get.

Claims

A fuel supply device,
A bottomed cylindrical reserve cup for storing fuel in the fuel tank;
A filter member having a bag-shaped filter member that is disposed in the reserve cup and filters the fuel sucked into the fuel pump;
A jet pump for supplying fuel in the fuel tank into the reserve cup;
In the reserve cup, there is provided a fuel guide wall portion that forms a guide channel extending in the circumferential direction between the reserve cup and the side wall portion of the reserve cup,
The jet pump is arranged to discharge fuel from one end side to the other end side of the guide flow path,
The fuel supply device, wherein the filter member of the filter member faces the side wall portion of the reserve cup and is disposed so that the fuel discharged from the guide channel flows between the side wall portion and the filter cup.
The fuel supply device according to claim 1,
The fuel supply device, wherein one end portion of the filter member of the filter member is disposed so as to overlap a surface of the fuel guide wall portion opposite to the guide flow path.
The fuel supply device according to claim 1 or 2,
The fuel supply device, wherein a protruding portion protruding inward is formed on a side wall portion of the reserve cup facing the filtering member of the filter member.