JP6698508B2 - Fuel supply device - Google Patents

Description

  The present invention relates to a fuel supply device.

  As the fuel supply device, there is one described in Patent Document 1, for example. The fuel supply device of Patent Document 1 (referred to as "conventional example") includes a reserve cup, a fuel pump, a pump case, and a support member. The reserve cup stores fuel in the fuel tank and has an upper surface opening. The fuel pump supplies the fuel in the reserve cup to the engine. The pump case houses the fuel pump. The support member supports the pump case on the reserve cup. The support member includes a support arm part having one end connected to the pump case, and a ring part having a locking tab connected to the other end of the support arm part and locked to the opening edge of the reserve cup. There is. In Patent Document 1, the storage container (4) is the "reserve cup" as used herein, the fuel pump (15) is the "fuel pump", the support skirt (31) is the "pump case", and the branches (34, 35). Corresponds to the "support arm portion", and the fixed ring (32) corresponds to the "ring portion".

Special table 2004-514580 gazette

  According to the conventional example, there is a problem that the load applied to the mounting portion (ring portion) of the support member with respect to the reserve cup is large and the mounting portion is easily deformed. The problem to be solved by the present invention is to provide a fuel supply device capable of suppressing deformation of a mounting portion of a support member with respect to a reserve cup.

  The above problems can be solved by the fuel supply device of the present invention. A first invention is a reserve cup that stores fuel in a fuel tank and has an upper surface opening, a fuel pump that supplies the fuel in the reserve cup to an engine, a pump case that houses the fuel pump, and A fuel supply device comprising: a support member supporting the pump case in a reserve cup, wherein the support member includes a plurality of elastic support arms radially provided on the pump case and having elasticity; A fuel supply device, comprising: an annular support lid portion attached to the reserve cup so as to cover at least a peripheral portion of the upper surface opening portion and connected to an outer end portion of the support arm portion. According to this configuration, the support member includes the annular support lid portion that is attached to the reserve cup so as to cover at least the peripheral edge portion of the upper surface opening portion of the reserve cup and that is connected to the outer end portion of the support arm portion. .. Therefore, the support lid portion can increase the rigidity of the mounting portion to the reserve cup and suppress the deformation of the mounting portion.

  In a second aspect based on the first aspect, the support arm portion includes a first portion including a curved portion extending in a radial direction of the pump case, and one end portion of the first portion, and the support arm portion of the pump case. And a second portion extending along the axial direction. According to this configuration, the vibrations transmitted from the pump case to the reserve cup can be absorbed by the elastic deformation of the first portion and the elastic deformation of the second portion of the support arm portion, and the vibration transmission rate can be reduced. it can.

  In a third aspect based on the second aspect, the other end of the first portion is connected to the pump case, and the other end of the second portion is connected to the support lid portion. , A fuel supply device.

  In a fourth aspect based on the third aspect, the first portion is formed in a U shape, and the second portion is formed in a W shape including one end portion of the first portion. It is a fuel supply device.

  5th invention is a fuel filter apparatus in any one of 1st-4th invention, Comprising: The fuel filter apparatus which has a bag-shaped filter connected to the fuel inlet of the said fuel pump, and filters fuel is provided. The fuel supply device is arranged in a curved state so as to surround the periphery of the pump case. According to this structure, the filter of the fuel filter device is arranged in a curved state so as to surround the periphery of the pump case, whereby the radiated sound emitted by the operation of the fuel pump is absorbed by the filter and the noise is reduced. can do.

  A sixth aspect of the present invention is the fuel cell device according to the third or fourth aspect, further comprising a fuel filter device having a bag-shaped filter that is connected to the fuel intake port of the fuel pump and that filters fuel. Is arranged in a curved state so as to surround the periphery of the fuel supply device, and the filter is arranged radially inward of the second portion of the support arm portion in a plan view. With this configuration, the filter of the fuel filter device is arranged in a curved state so as to surround the periphery of the pump case, so that the radiated sound emitted by the operation of the fuel pump is absorbed by the filter to reduce noise. You can Further, since the filter is arranged radially inward of the second portion of the support arm portion in a plan view, the filter is arranged so as not to come into contact with the inside of the reserve cup, and the vibration of the filter is directly applied to the reserve cup. Can be suppressed.

It is a perspective view showing a fuel supply system concerning one embodiment. It is a front view which shows a fuel supply apparatus. It is a perspective view which decomposes|disassembles and shows the cover member and pump unit of a fuel supply apparatus. It is a top view which shows a pump unit. FIG. 5 is a sectional view taken along the line VV of FIG. 4. 6 is a sectional view taken along the line VI-VI of FIG. FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6. It is a perspective view which decomposes|disassembles and shows the reserve cup and pump module of a pump unit. It is a top view which shows a reserve cup. It is the perspective view which looked at a pump module from the back upper part. It is a bottom view showing a pump module. It is a perspective view which decomposes|disassembles and shows the components of a pump module. It is a top view which shows a pump holder. FIG. 14 is a sectional view taken along the line XIV-XIV of FIG. 13. FIG. 15 is a sectional view taken along the line XV-XV of FIG. 14.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. The present embodiment is applied to a fuel supply device that supplies fuel in a fuel tank mounted on a vehicle such as an automobile equipped with an engine (internal combustion engine) to the engine. FIG. 1 is a perspective view showing a fuel supply device, FIG. 2 is a front view showing the same, and FIG. 3 is a perspective view showing an exploded view of a lid member and a pump unit. The arrows in the figure indicate the front, rear, left, right, up, and down directions of the fuel supply device. The up-down direction corresponds to the direction of gravity when mounted in the fuel tank of the vehicle, the so-called up-down direction. Further, the front-rear, left-right direction is not specified.

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

  The fuel supply device 10 includes a lid member 16 and a pump unit 18 (see FIGS. 1 and 3). The lid member 16 is made of resin and has a disc 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 electric connector 22. Although not shown, a fuel supply pipe that supplies fuel to the engine is connected to the fuel discharge pipe 20 on the upper surface side of the lid member 16. Further, an external connector (not shown) connected to an external power source is connected to the electric connector 22. The fuel discharge pipe 20 supplies the fuel discharged from the fuel pump on the pump unit 18 side to the fuel supply pipe. Further, the electric connector 22 supplies electric power from the external connector into the fuel tank 12. Further, parts other than the lid member 16 of the fuel supply device 10 are housed in the fuel tank 12.

  4 is a plan view showing the pump unit, FIG. 5 is a sectional view taken along the line VV of FIG. 4, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a line VII-VII of FIG. FIG. 8 is a cross-sectional view taken along the arrow, and FIG. 8 is a perspective view showing the reserve cup and pump module of the pump unit in an exploded manner. As shown in FIG. 8, the pump unit 18 includes a reserve cup 14 and a pump module 24 (see FIGS. 3 and 5). FIG. 9 is a plan view showing the reserve cup.

  As shown in FIG. 8, the reserve cup 14 is, for example, a cup-shaped container made of resin, and includes a D-shaped tubular side wall portion 26 and a bottom wall portion 28 that closes the lower surface opening of the side wall portion 26. It has (see FIG. 9). The side wall portion 26 has a C-shaped semi-cylindrical wall-shaped portion 26a and a flat plate-shaped 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 mounted on the lower wall portion 12b 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 are projected on the outer peripheral portion of the lower surface of the bottom wall portion 28 at predetermined intervals in the circumferential direction. . Although not shown, on the front side surface of the flat wall portion 26b of the side wall portion 26, 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 portion) is attached. It is possible. The lead wire of the main body is electrically connectable to the electric connector 22.

  As shown in FIG. 8, on the front side surface of the flat wall-shaped portion 26b, a pair of left and right hollow cylindrical guide cylinders 30 are formed. Further, as shown in FIG. 9, a laterally long hole-shaped fuel inlet 32 is formed at the left end of the front end of the bottom wall 28. A fuel guide wall portion 34 is formed in a vertical wall shape on the front portion of the bottom wall portion 28. The fuel guide wall portion 34 is formed to extend along the flat wall-shaped portion 26b and the semi-cylindrical wall-shaped portion 26a of the reserve cup 14 at a predetermined interval. The left end portion of the fuel guide wall portion 34 is connected to the flat wall portion 26b so as to surround the left end portion of the fuel inlet 32. A guide channel 36 for guiding the fuel discharged from the jet pump (described later) is formed between the flat wall-shaped portion 26b and a part of the semi-cylindrical wall-shaped portion 26a. The fuel guide wall portion 34 has a height that is about 1/3 of the depth of the reserve cup 14 (see FIGS. 5 to 7 ).

  As shown in FIG. 2, two left and right connecting shafts 38 are provided between the reserve cup 14 and the lid member 16 to connect the members 14 and 16 so as to be vertically expandable and contractible (see FIG. 3). ). The connecting shaft 38 is formed of, for example, a solid shaft member or a hollow shaft member made of metal. 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 (lower end) of each connecting shaft 38 is slidably inserted in a predetermined range in the axial direction (vertical direction) with respect to each guide cylinder 30 of the reserve cup 14. Thus, the pump unit 18 is connected to the lid member 16 so as to be vertically expandable and contractible.

  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 urges the reserve cup 14 and the lid member 16 in directions away from each other. That is, the pump unit 18 including the reserve cup 14 is elastically pressed against the lower wall portion 12b of the fuel tank 12 by the biasing force of the spring 39. Therefore, even if the fuel tank 12 expands or contracts due to a change in internal pressure or a change in fuel amount due to a change in temperature, the reserve cup 14 maintains a state in which it is constantly 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 8 ). FIG. 10 is a perspective view of the pump module as seen from the upper rear side, FIG. 11 is a bottom view of the same, and FIG. 12 is a perspective view of the same in exploded form. As shown in FIG. 12, the pump module 24 includes a pump holder 40, to which a fuel pump 42, a fuel filter device 44, a pressure adjusting valve 46, a relay pipe 48, and a jet pump 50 are assembled (FIG. 8, FIG. 8). 10 and FIG. 11). The parts 42, 44, 46, 48 and 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 ). 13 is a plan view showing the pump holder, FIG. 14 is a sectional view taken along line XIV-XIV in FIG. 13, and FIG. 15 is a sectional view taken along line XV-XV in FIG.

  As shown in FIG. 14, the pump holder 40 is made of resin and includes a pump case portion 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 form a support member 55. The pump case part 52 is formed in a cylindrical shape. The pump case portion 52 corresponds to the "pump case" in this specification.

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

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

  As shown in FIG. 5, the C-shaped tubular space portion between the inner pipe portion 70 and the outer pipe portion 72 communicates with the internal space of the lateral pipe portion 62. At the lower end portion of the outer pipe portion 72, a control valve attachment pipe portion 77 that extends downward than the lower end portion of the inner pipe portion 70 is formed. The adjustment valve mounting pipe portion 77 is formed in a stepped cylindrical shape that expands in diameter 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 capable of closing the inner peripheral portion of the upper opening of the reserve cup 14. In the pump unit 18 (see FIG. 3 ), 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" referred to in the present specification is an engagement means that connects the two members in a retaining state by elastic engagement.

  As shown in FIG. 13, a plurality of (for example, three) support arms 58 of the support member 55 are provided radially between the upper end of the pump case 52 and the inner periphery of the support lid 56. As a result, the pump case portion 52 is elastically supported by the support lid portion 56. The support arm portion 58 will be described in detail later.

  In FIG. 12, the fuel pump 42 is a Wesco type electric fuel pump. The pump body 80 of the fuel pump 42 is formed in a substantially columnar shape, and has a pump part and a motor part built therein. The fuel pump 42 generates a fuel suction force 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 body 80, and a fuel discharge port 84 for discharging fuel at the other end (upper end) of the pump body 80. There is. Further, a power supply 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 the pump case portion 52 with the fuel discharge side on the upper side in the vertical direction and the fuel suction side on the lower side in the vertical direction. The fuel discharge port 84 is connected to the connection tubular portion 67 of the pump holder 40 by fitting. The power supply connector portion 85 of the fuel pump 42 is exposed from the upper end opening of the pump case portion 52 (see FIG. 10). In the fuel supply device 10 (see FIG. 1), the power supply connector portion 85 and the electric connector 22 of the lid member 16 are connected via a wiring member (not shown).

  As shown in FIG. 5, the fuel filter device 44 includes a filter member 87, an inner frame member 89, and a connecting pipe 91. The filter member 87 is formed in a bag shape with a filter material that filters fuel. The filter material is made of, for example, a resin non-woven fabric or a mesh material. The filter member 87 is arranged in a curved state so as to surround or cover the periphery (specifically, the rear half peripheral surface) of the pump main body 80 of the fuel pump 42 via the pump case portion 52 (see FIGS. 10 and 11 ). ).

  The inner bone member 89 is made of resin and is formed in a flexible skeleton shape. The inner rib member 89 is provided in the internal space of the filter member 87, and holds the space between the inner peripheral side portion and the outer peripheral side portion of the filter member 87. The filter member 87 is flat in the expanded state and is formed in a horizontally long quadrangular plate shape that lengthens the expanding direction. The filter member 87 is bent into a curved shape by utilizing the flexibility of the inner bone member 89. The filter member 87 corresponds to the “filter” in this specification.

  The connection pipe 91 is made of resin and has a tubular body portion 92 formed in an elbow tubular shape, and an attachment portion 93 formed at one end (upper end portion) of the tubular body portion 92 (FIGS. 11 and 12). 12). The other end portion (lower end portion) of the tubular body portion 92 is connected to the inner space of the filter member 87 at the lower end portion of the inner peripheral side portion of one end portion (right end portion) in the circumferential direction of the filter member 87. It is connected to the inner bone member 89. The attachment portion 93 of the connection pipe 91 is attached to the lower end portion of the pump case portion 52 of the pump holder 40 by snap-fit engagement. Along with this, the fuel pump 42 is prevented from coming off from the pump case portion 52. The fuel inlet port 82 of the fuel pump 42 is connected to the pipe portion 92 by fitting.

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

  As shown in FIG. 5, the pressure regulating valve 46 is housed in the regulating valve mounting pipe portion 77 of the fuel pipe portion 54 of the pump holder 40 (see FIG. 6). The flange portion 98 is retained by the adjustment valve mounting pipe portion 77 by snap-fit engagement. The fuel introduction port 102 (see FIG. 12) communicates with the space 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 being inserted.

  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 outlet pipe 75 of the pump holder 40 and connected by snap fit engagement.

  The jet pump 50 transfers the fuel outside the reserve cup 14 into the cup by utilizing the surplus fuel supplied from the surplus fuel outlet pipe 75 through the relay pipe 48. As shown in FIG. 7, the jet pump 50 includes a pump housing 105 forming a chamber 106, a fuel introduction pipe portion 107 extending upward from the pump housing 105, and a fuel discharge pipe extending laterally (rightward) from the pump housing 105. And a portion 108 (see FIG. 12). The pump housing 105 is formed with a nozzle 109 for ejecting excess fuel into the chamber 106.

  The fuel introducing pipe portion 107 is connected to the lower end portion of the relay pipe 48. In the pump unit 18, the pump housing 105 is fitted to the left end portion between the flat wall-shaped portion 26b of the reserve cup 14 and the fuel guide wall portion 34 (see FIG. 6). As a result, the chamber 106 communicates with the fuel inlet 32 of the reserve cup 14. The fuel inlet 32 communicates with the inside of the fuel tank 12 through a gap formed by a number of projections 28 between the bottom wall portion 28 of the reserve cup 14 and the lower wall portion 12b of the fuel tank 12. . Further, the fuel outlet pipe section 108 is directed to the guide flow path 36 (see FIG. 7).

  As shown in FIG. 7, a branch pipe portion 110 that projects laterally (rightward) is formed in the central portion in the vertical direction of the fuel introduction pipe portion 107. The branch pipe portion 110 is used when supplying the surplus fuel to another jet pump (not shown), and is not used in the present embodiment, and is closed by a plug (not shown) or the like.

  Next, the operation of the fuel supply device 10 will be described. When the fuel pump 42 operates, the fuel in the reserve cup 14 is sucked through the fuel filter device 44 and pressurized, and then discharged into the lateral pipe portion 62 of the fuel pipe portion 54. 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 the pressure regulating valve 46. The pressure regulating valve 46 is configured such that the fuel pressure in the space between the inner pipe portion 70 and the outer pipe portion 72 of the fuel pipe portion 54, that is, the pressure of the fuel flowing in the lateral pipe portion 62 of the fuel pipe portion 54 is lower than a predetermined pressure. When the temperature 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. 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, so that the fuel outside the reserve cup 14 is sucked into the chamber 106. The sucked fuel is discharged from the fuel outlet pipe 108 to the guide passage 36 in the reserve cup 14 together with the jet flow jetted from the nozzle 109. As a result, the inside of the reserve cup 14 is filled with the fuel.

  Next, the support member 55 of the pump holder 40 will be described in detail. As shown in FIG. 13, the support member 55 includes the support lid portion 56 and the three support arm portions 58, as described above. 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 ). Is in contact with the upper end surface of the side wall portion 26.

  The three support arm portions 58 are arranged at equal intervals in the circumferential direction. One end of each of the three support arms 58 is connected to the pump case 52, and the other end is connected to the inner periphery of the support lid 56. Specifically, 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 portion 52. Since the three support arm portions 58 have basically the same configuration, the same reference numerals are given to the same portions. The support arm portion 58 has a first portion 112 on the pump case portion 52 side and a second portion 114 on the support lid portion 56 side (see FIG. 14 ).

  As shown in FIG. 14, the first portion 112 is in the shape of a strip plate and has an inverted U shape, and has an inner vertical piece portion 116, a curved portion 117, and an outer vertical piece portion 118. The front inner vertical piece portion 116 is formed so that the end portion on the pump case portion side is connected to the front side surface of the pump case portion 52. In addition, the inner vertical piece portions 116 on the left rear side and the right rear side are provided with a pair of split grooves 120 extending downward from the upper end surface of the pump case portion 52, so that the split split groove portions 120 are separated from each other. (See FIG. 13). Further, the curved portion 117 is formed in a curved shape that is warped from the upper end of the inner vertical piece portion 116 toward the radially outer side of the pump case portion 52. The outer vertical piece 118 extends downward from the outer end of the curved portion 117 and is parallel to the inner vertical piece 116. The first portion 112 is formed so as to be flexibly deformable in the radial direction of the pump case portion 52, so-called elastically deformable. The elastic deformation of the first portion 112 allows the lower end portion of the outer vertical piece portion 118 to be displaced in the radial direction of the pump case portion 52.

  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 portion 118, and has a horizontal piece portion 122 and a pair of both vertical piece portions 123. There is. The central portion of the horizontal piece 122 is connected to the outer vertical piece 118. Both vertical piece portions 123 extend from both ends of the horizontal piece portion 122 so as to rise upward. The upper ends of the vertical strips 123 are connected to the support lid 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 is flexibly deformable in the radial direction of the pump case portion 52, so-called elastically deformable. Has been formed. The elastic deformation of the second portion 114 allows the horizontal piece 122, that is, the lower end of the outer vertical piece 118 to be displaced in the radial direction of the pump case 52.

  In plan view, the second portions 114 on the left rear side and the right rear side are arranged radially outward of the filter member 87 (see FIG. 4 ). That is, the filter member 87 is arranged radially inward of the second portion 114 in plan view. The support arm portion 58 and the filter member 87 are arranged so as not to interfere with each other.

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

  The filter holding member 125 is integrally formed with the pump holder 40 by integral molding. The tip portion 125b of the filter holding member 125 holds the end portion of the filter member 87 opposite to the connection pipe 91, that is, the free end portion 87a (see FIG. 11). The tip portion 125b of the filter holding member 125 is in contact with the outer surface of the free end portion 87a of the filter member 87. The free end portion 87a corresponds to one end portion in the circumferential direction of the filter member 87 fixed to the fuel pump 42 side by the connection pipe 91 and the other end portion.

  The filter holding member 125 holds the filter member 87 in a state of surrounding the pump case portion 52 accommodating the fuel pump 42, that is, in a curved state (see FIG. 4 ). As a result, movement of the free end portion 87a of the filter member 87 in the developing direction (outward in the radial direction of the pump case portion 52) due to the elastic restoring force of the inner bone member 89 (see FIG. 5) is suppressed, and the filter member 87 is prevented. The free end portion 87 a is held so as not to contact the reserve cup 14. The filter holding member 125 corresponds to the “filter shape holding member” in this specification. Further, the adjustment valve mounting pipe portion 77 having an axis parallel to the axis of the fuel pump 42 corresponds to the “tubular portion” in the present specification. Further, the right end portion of the fuel guide wall portion 34 is brought into contact with or close to the outer surface of one end portion (base end portion) in the circumferential direction of the filter member 87 fixed to the fuel pump 42 side by the connection pipe 91. (See FIG. 5).

  According to the fuel supply device 10 described above, the support member 55 is attached to the reserve cup 14 so as to cover the peripheral portion of the upper surface opening of the reserve cup 14 and is connected to the outer end portion of the support arm portion 58 in an annular shape. A lid 56 is provided. Therefore, the support lid portion 56 can increase the rigidity of the mounting portion to the reserve cup 14 and suppress the deformation of the mounting portion.

  The support arm portion 58 is connected to the first portion 112 including the curved portion 117 extending in the radial direction of the pump case portion 52, and one end portion of the first portion 112, and extends along the axial direction of the pump case portion 52. And a second portion 114. Therefore, the vibration transmitted from the pump case portion 52 to the reserve cup 14 is generated by the cooperation of the elastic deformation (flexing deformation) of the first portion 112 and the elastic deformation (flexing deformation) of the second portion 114 of the support arm portion 58. It is possible to absorb and reduce the vibration transmissibility.

  Further, the fuel filter device 44 is provided, which is connected to the fuel intake port 82 of the fuel pump 42 and has a bag-shaped filter member 87 for filtering the fuel, and the filter member 87 is curved so as to surround the periphery of the pump case portion 52. It is arranged in a state. Therefore, the radiated sound emitted by the operation of the fuel pump 42 can be absorbed by the filter member 87, and the noise can be reduced.

  Further, by disposing the filter member 87 in a curved state so as to surround the periphery of the pump case portion 52, it is possible to increase the filtration area while arranging the filter member 87 compactly.

  Further, the filter member 87 is disposed radially inward of the second portion 114 of the support arm portion 58 in a 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 inside of the reserve cup 14. Further, it is also possible to dispose the upper end portion of the filter member 87 in the first portion 112 of the support arm portion 58, so that the degree of freedom in disposing the filter member 87 can be improved and the filtering area of the filter member 87 can be improved. Can be increased.

[Other Embodiments] The present invention is not limited to the embodiments, and modifications can be made without departing from the present invention. For example, in the embodiment, the other end of the first portion 112 of the support arm portion 58 is connected to the pump case portion 52 and the other end of the second portion 114 is connected to the support lid portion 56. The other end portion of the second portion 114 may be connected to the support lid portion 56, and the other end portion of the second portion 114 may be connected to the pump case portion 52. Further, a part (upper end portion) of the filter member 87 may be disposed between the inner vertical piece portion 116 and the outer vertical piece portion 118 of the inverted U-shaped first portion 112 of the support arm portion 58. Good. In this case, it is possible to improve the degree of freedom of layout in the reserve cup 14. In addition, the first portion 112 of the support arm portion 58 may be changed to a shape other than the U-shape. Further, the second portion 114 of the support arm portion 58 may be changed to a shape other than the W shape. Further, the filter member 87 of the fuel filter device 44 may be arranged not only in a curved state but also in a free state.

10 Fuel Supply Device 12 Fuel Tank 14 Reserve Cup 42 Fuel Pump 44 Fuel Filter Device 52 Pump Case Part (Pump Case)
55 Support Member 56 Support Lid 58 Support Arm 82 Fuel Inlet 87 Filter Member (Filter)
112 first portion 114 second portion 117 bending portion

Claims (5)

A reserve cup that stores fuel in the fuel tank and has an upper opening,
A fuel pump for supplying the fuel in the reserve cup to the engine;
A pump case accommodating the fuel pump,
A support member for supporting the pump case on the reserve cup,
A fuel supply device comprising:
The support member is attached to the reserve cup so as to cover a plurality of elastic support arms radially provided on the pump case and have elasticity, and at least a peripheral portion of an upper surface opening of the reserve cup, and the support arm portion. And an annular support lid connected to the outer end of the
A fuel filter device having a bag-shaped filter connected to the fuel inlet of the fuel pump and filtering the fuel;
The fuel supply device , wherein the filter is arranged in a curved state so as to surround the pump case . The fuel supply device according to claim 1, wherein
The support arm portion has a first portion having a curved portion, and a second portion connected to one end portion of the first portion and extending along the axial direction of the pump case ,
The fuel supply device wherein the curved portion extends in a radial direction of the pump case . The fuel supply device according to claim 2, wherein
The other end of the first portion is connected to the pump case,
The fuel supply device, wherein the other end of the second portion is connected to the support lid portion. The fuel supply device according to claim 3, wherein
The first portion is U-shaped,
The fuel supply device in which the second portion is formed in a W shape including one end portion of the first portion. The fuel supply device according to claim 3 or 4, wherein
In plan view, the filter radially inward of the second portion of the support arm is arranged, the fuel supply device.

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