JP2018127923A - Fuel filter and fitting structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress expansion of a slack portion of a planar part of a filter member due to folding of a skeleton member, to save a space of the filter member.SOLUTION: A fuel filter 20 includes a bag-shaped filter member 50 configured to filtrate fuel, and a skeleton member 52 arranged in an internal space of the filter member 50 and holding the filter member 50 in an expanded state. The filter member 50 has a pair of both planar parts 51(A), 51(B) formed into a parallel planar shape. The skeleton member 52 has a rear stage part 78 contacting with the rear side planar part 51(A), and a front stage part 80 contacting with the front side planar part 51(B). The front stage part 80 is formed so as to be foldable backward. On a rear side of the front stage part 80, a slack storage space 96 is formed, which stores a slack portion occurring at the rear side planar part 51(A) due to folding of the skeleton member 52.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a fuel filter and a mounting structure thereof.

  A fuel filter for filtering fuel sucked into a fuel pump disposed in a fuel tank of a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle is disposed in a bag-shaped filter member for filtering fuel and an internal space of the filter member. And a skeleton member that holds the filter member in an enormous state. The filter member has a pair of double-sided portions that form parallel surfaces. The skeleton member has one contact portion that contacts one planar portion and the other contact portion that contacts the other planar portion. The skeleton member is formed by connecting a plurality of constituent members so that they can be bent. Such a fuel filter is described in Patent Document 1, for example.

JP 2012-112333 A

  According to the fuel filter of Patent Document 1, when the constituent member of the skeleton member is bent in a direction in which one planar portion of the filter member is inside, a slack portion is generated in one planar portion, and the slack portion bulges. Specifically, it bulges to the surface side of the planar portion. This hinders space saving of the filter member.

  A problem to be solved by the present invention is to provide a fuel filter and a mounting structure thereof capable of suppressing the swelling of the slack portion of the planar portion of the filter member accompanying the bending of the skeleton member and saving the space of the filter member. It is to provide.

  The above-described problems can be solved by the fuel filter of the present invention and its mounting structure. 1st invention is equipped with the bag-shaped filter member which filters fuel, and the skeletal member which is arrange | positioned in the internal space of the said filter member, and hold | maintains this filter member in a huge state, The said filter member is It has a pair of double-sided portions forming a parallel surface shape, and the skeleton member has one contact portion that contacts one of the planar portions and the other contact portion that contacts the other planar portion. The skeleton member has a bent portion formed to be foldable in a direction in which the one planar portion is inside, and the one of the bent portions is a fuel filter. In the fuel filter, a slack accommodating space for accommodating a slack portion generated in the one planar portion by bending of the skeleton member is formed on the side facing the planar portion.

  According to this configuration, when the bent portion of the skeleton member is bent in the direction in which one planar portion of the filter member is inward, a slack portion is generated in one planar portion, but the slack portion is accommodated in the slack accommodating space. can do. Therefore, it is possible to save the space of the filter member by suppressing the bulging of the slack portion of the one planar portion accompanying the bending of the skeleton member.

  A second aspect of the invention is a fuel filter mounting structure according to the first aspect of the invention, further comprising a lid member that closes an opening formed at the bottom of the fuel tank, and fuel is stored in the lid member. A fuel reservoir portion having an opening on the upper surface is formed, and the filter member is disposed in the fuel reservoir portion at least one end portion in a direction intersecting with a folding direction in a folded state. It is a fuel filter mounting structure in which a slack correction convex portion that presses a slack portion of the one planar portion to the slack accommodation space is formed.

  According to this configuration, at least one end of the filter member in the direction intersecting the bending direction is disposed in the fuel reservoir, so that the slack portion bulging in one planar portion is slack-accommodating space by the slack correction convex portion. Is pressed. Thereby, the swelling of the slack portion of the planar portion of the filter member can be suppressed. As a result, the volume of the fuel reservoir of the lid member can be reduced together with the installation space for the filter member, and the fuel filter mounting structure can be made compact.

  According to a third aspect of the present invention, in the second aspect of the present invention, the wall portion facing the other planar portion of the fuel reservoir portion is prevented from sticking to press the other planar portion in a direction away from the wall portion. This is a fuel filter mounting structure in which convex portions are formed.

  According to this configuration, the other planar portion of the filter member is pressed away from the wall portion by the sticking prevention convex portion formed on the wall portion facing the other planar portion of the fuel reservoir. Thereby, sticking of the other planar part of the filter member with respect to the wall part of a fuel reservoir part can be suppressed.

  According to the present invention, it is possible to suppress the swelling of the slack portion of the planar portion of the filter member that accompanies bending of the skeleton member, and to save the space of the filter member.

1 is a perspective view showing a fuel pump module according to Embodiment 1. FIG. It is a top view which shows a fuel pump module in the state where the pump holding member was abbreviate | omitted. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. It is a perspective view which decomposes | disassembles and shows a fuel pump module. It is a top view which shows a set plate. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. It is a figure which shows the slack correction convex part of a set plate. It is a figure which shows the sticking prevention rib of a set plate. It is a rear view which shows a fuel filter. It is a XI-XI line sectional view taken on the line of FIG. It is XII-XII sectional view taken on the line of FIG. It is a perspective view which decomposes | disassembles and shows a frame member and a connection member. It is a figure which shows a weak part. It is the perspective view which looked at the frame member concerning Embodiment 2 from the back side. It is a figure which shows a weak part. It is sectional drawing which shows the fuel filter concerning Embodiment 3. It is the perspective view which looked at the frame member from the back side.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Embodiment 1] Embodiment 1 will be described. The fuel pump and the fuel filter according to the fuel filter mounting structure of the present embodiment are modularized into a fuel pump module. The fuel pump module is, for example, a so-called bottom attachment type (bottom attachment type) that is attached to the bottom of a fuel tank of a motorcycle, and is used to supply fuel in the fuel tank to an internal combustion engine (engine). It is done.

  Prior to the description of the fuel filter, the fuel pump module will be described. 1 is a perspective view showing the fuel pump module, FIG. 2 is a plan view showing the fuel pump module with the pump holding member omitted, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV, and FIG. 5 is an exploded perspective view of the fuel pump module. Moreover, the arrow in a figure has shown the azimuth | direction concerning a fuel pump module. The vertical direction corresponds to the gravitational direction so-called top-and-bottom direction when mounted on the fuel tank of the vehicle. Moreover, the front-rear and left-right directions are not specified.

  As shown in FIG. 3, the fuel pump module 10 is attached to the bottom wall portion 12 a of the fuel tank 12. The fuel tank 12 is, for example, a metal hollow container. A round hole-shaped opening 13 is formed in the bottom wall 12a. A fuel tank 12 stores engine fuel, for example, liquid fuel such as gasoline. The bottom wall portion 12a corresponds to the “bottom portion” in this specification.

  As shown in FIG. 5, the fuel pump module 10 includes a set plate 14, a pump holding member 16, a fuel pump 18, a fuel filter 20, a pressure regulator 22, and the like (see FIG. 1). The set plate 14 is made of resin and is attached to the bottom wall portion 12a so as to close the opening hole 13 of the fuel tank 12 (see FIG. 3).

  6 is a plan view showing the set plate, and FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. As shown in FIG. 6, the set plate 14 is mainly formed of a plate body 24 formed in a disc shape. On the upper surface side of the plate main body 24, a pair of left and right circular arc-shaped fitting wall portions 25 are formed concentrically and symmetrically (see FIG. 5). The fitting wall portion 25 is fitted into the opening hole 13 (see FIG. 3) of the fuel tank 12. A flange-like portion on the outer peripheral side of the plate body 24 is an attachment flange 26 attached to the fuel tank 12. The set plate 14 corresponds to a “lid member” in this specification.

  As shown in FIG. 5, the plate body 24 is provided with a fuel discharge port 28 and a power connector 29. The fuel discharge port 28 is formed in an L-shaped tube having a vertical tube portion 28 a and a horizontal tube portion 28 b in the plate body 24. The vertical tube portion 28a is disposed at the right end portion of the plate main body 24 (specifically, in the vicinity of the inside of the right fitting wall portion 25) and penetrates the plate main body 24 in the vertical direction. The horizontal tube portion 28b protrudes rightward from the lower end portion of the vertical tube portion 28a. The power connector 29 is assembled to the rear end portion of the plate body 24 (specifically, the vicinity of the inside between the rear end portions of the fitting wall portions 25) (see FIG. 3). An arcuate wall-like extension wall portion 25a is formed at the rear end portions of the fitting wall portions 25 so as to surround both side portions of the power connector 29 (see FIG. 2).

  As shown in FIG. 7, a fuel reservoir 30 having an upper surface opening shape capable of storing fuel is formed at the front portion of the plate body 24. The fuel reservoir 30 has a cylindrical peripheral wall portion 31 extending downward from the plate body 24 and a plate-shaped bottom plate portion 32 that closes the lower surface opening of the peripheral wall portion 31 (see FIG. 6). As shown in FIG. 6, the peripheral wall portion 31 is formed to be bilaterally symmetric, and includes an arcuate wall portion 34, a C-shaped wall portion 35, and a pair of left and right flat plate-like wall portions 36. The arc-shaped wall portion 34 is formed in an arc tube shape along the circumference of the fitting wall portions 25 at the front portion of the plate body 24. The C-shaped wall portion 35 is formed in a C-shaped cylindrical shape that opens forward in the central portion of the plate body 24. Both flat plate-like wall portions 36 are formed in a flat wall shape extending in the left-right direction, and are formed so as to span between a side end portion of the arc-shaped wall portion 34 and a front end portion of the C-shaped wall portion 35. Has been. A cylindrical support tube portion 38 is formed on the bottom plate portion 32 in the rear end portion of the C-shaped wall portion 35 (see FIG. 7).

  On the upper surface side of the plate body 24, left and right connecting wall portions 40 having a vertically long rectangular shape are formed. Both the connecting wall portions 40 are formed in an arc shape in plan view, and are arranged symmetrically on the circumference surrounding the C-shaped wall portion 35 of the fuel reservoir 30. Both the connecting wall portions 40 are formed so as to straddle the plate body 24 and the bottom plate portion 32 with the both plate-like wall portions 36 of the fuel reservoir 30 interposed therebetween. Engagement holes 41 penetrating in the radial direction are formed at the upper end portions of both the connecting wall portions 40 (see FIG. 7). Further, an auxiliary wall portion 43 is formed on the upper surface side of the plate body 24. The auxiliary wall 43 is disposed behind the C-shaped wall 35 of the fuel reservoir 30 in plan view. The auxiliary wall portion 43 basically has the same shape as the connecting wall portion 40 and has an engagement hole 41 (see FIGS. 5 and 7).

  In FIG. 3, the fuel pump 18 is a Wesco-type electric fuel pump. The fuel pump 18 has a cylindrical outer shape, has a fuel suction port 45 protruding toward one end surface (lower surface), and has a fuel discharge port 46 protruding toward the other end surface (upper surface). . An electrical connector portion 48 is provided on the upper surface side of the fuel pump 18.

  The fuel filter 20 includes a filter member 50, a skeleton member 52, and a connection member 53. The filter member 50 is formed in a bag shape for filtering fuel. The filter member 50 is formed in a flat shape having a pair of front and rear double-sided portions 51 that form a parallel surface. The filter member 50 is in a flat plate state in a free state where no external force is applied. In addition, a code | symbol and (A) are attached | subjected to the planar part 51 of the rear side, and a code | symbol and (B) are attached | subjected to the planar part 51 of the front side.

  The skeleton member 52 is made of resin and has a skeleton structure. The skeleton member 52 is disposed in the internal space of the filter member 50, and holds the double-sided portions 51 (A) and 51 (B) in an enormous state from the inside. The connection member 53 is made of resin and is formed in an elbow tube shape having a tube main body 54 and a connection port 55. An end portion (front end portion) opposite to the connection port 55 of the tube main body 54 is attached to the skeleton member 52 by snap fit engagement or the like via the rear planar portion 51 (A). A fuel suction port 45 of the fuel pump 18 is connected to the connection port 55 by press fitting. Thereby, the internal space of the filter member 50 and the fuel inlet 45 of the fuel pump 18 are communicated with each other via the connection member 53.

  The filter member 50 is disposed such that the rear planar portion 51 (A) is adjacent to the front side of the fuel pump 18. The upper end portion of the filter member 50 is disposed at substantially the same height as the upper end portion of the fuel pump 18. The fuel pump 18 to which the fuel filter 20 is connected is referred to as a pump assembly 56 (see FIG. 5). The fuel filter 20 will be described in detail later.

  5, when the pump assembly 56 is assembled to the set plate 14, the left and right side portions of the filter member 50 are in the direction (rear) in which the rear planar portion 51 (A) (see FIG. 12) is inward (ie, the fuel). It is bent toward the pump 18 side (see the solid line 50 in FIG. 5). In this state, the lower part of the pump assembly 56 is accommodated by insertion into the fuel reservoir 30 of the set plate 14 (see FIGS. 2 and 3). The lower end of the fuel pump 18 is fitted in the C-shaped wall 35 of the fuel reservoir 30 (see FIG. 3). In FIG. 5, a two-dot chain line 50 indicates a developed state of the filter member 50, that is, a state before bending.

  The filter member 50 is disposed between the arc-shaped wall portion 34 of the peripheral wall portion 31 (see FIG. 6) and the both flat plate-like wall portions 36 (see FIG. 2). As shown in FIG. 3, the lower end portion of the filter member 50 is in contact with or close to the bottom plate portion 32. The rear planar portion 51 (A) is disposed on the front side of the fitting wall portions 25. Further, the pipe main body 54 of the connecting member 53 is disposed between the two connecting wall portions 40. The lower surface of the connection port 55 of the connection member 53 is supported on the support cylinder portion 38 of the fuel reservoir 30.

  As shown in FIG. 5, the pump holding member 16 is made of resin and has a holding cylinder part 58, a fuel pipe part 59, and a bracket part 60. The holding cylinder portion 58 is formed in a vertical cylindrical shape. The holding cylinder part 58 can be fitted so as to cover the upper part of the fuel pump 18 and can be fitted inside both the connecting wall part 40 and the auxiliary wall part 43 of the set plate 14. The holding cylinder portion 58 is formed with three (two are shown in FIG. 5) engaging protrusions 62 that protrude from the outer peripheral surface of the central portion in the vertical direction. The engagement protrusions 62 are arranged at a predetermined interval in the circumferential direction. An opening 63 is formed on the upper surface of the holding cylinder portion 58. The fuel piping part 59 extends in the left-right direction on the holding cylinder part 58. A connection port 65 that communicates the inside and outside of the pipe is formed on the lower surface side of the fuel pipe portion 59. At the right end portion of the fuel piping portion 59, a hanging cylinder portion 66 that hangs downward is formed in an elbow shape. The holding cylinder portion 58 is fitted so as to cover the fuel pump 18 and is fitted inside the two connecting wall portions 40 and the one auxiliary wall portion 43. As a result, the engagement projections 62 of the holding cylinder portion 58 and the engagement holes 41 of the connection wall portions 40 and the auxiliary wall portion 43 are snap-fit using elastic deformation of the wall portions 40, 43, that is, so-called bending deformation. Is engaged.

  Thereby, as shown in FIG. 1, the set plate 14 and the pump holding member 16 are connected in a state of sandwiching the fuel pump 18. Further, the connection port 65 of the fuel piping part 59 is connected to the fuel discharge port 46 of the fuel pump 18 by fitting. Further, the drooping cylinder part 66 of the fuel pipe part 59 is connected to the vertical pipe part 28 a of the fuel discharge port 28 of the set plate 14 by fitting. The electrical connector 48 of the fuel pump 18 is exposed at the opening 63.

  The pressure regulator 22 is incorporated in the left end portion of the fuel piping portion 59 and is prevented from being detached by a retaining member 68 attached to the fuel piping portion 59 by snap-fit engagement or the like. The pressure regulator 22 adjusts the pressure of the fuel in the fuel pipe portion 59 and discharges surplus fuel into the fuel tank 12 (see FIG. 3). Although not shown, the power connector 29 of the set plate 14 (see FIG. 2) and the electrical connector portion 48 of the fuel pump 18 are electrically connected by electrical wiring. Further, a fuel supply pipe connected to the engine is connected to the horizontal pipe portion 28b of the fuel discharge port 28 of the set plate 14. The electrical connector 29 is connected to an external connector connected to an external power source. Further, the bracket 60 (see FIG. 1) of the pump holding member 16 has, for example, a liquid level sensor that detects the remaining amount of fuel in the fuel tank 12 (see FIG. 3), that is, the position (height) of the liquid level. It can be attached.

  Next, the operation of the fuel pump module 10 will be described. By operating the fuel pump 18, the fuel in the fuel tank 12 is sucked and pressurized through the filter member 50 and the connection member 53 of the fuel filter 20 and then discharged to the fuel piping portion 59 of the pump holding member 16. Is done. The fuel passes through the fuel discharge port 28 from the drooping cylinder portion 66 of the fuel piping portion 59 and is then supplied to the engine via the fuel supply piping. The pressure of the fuel supplied to the engine is adjusted to a predetermined pressure by the pressure regulator 22, and surplus fuel is discharged from the pressure regulator 22 into the fuel tank 12.

  Next, the fuel filter 20 will be described. 10 is a rear view showing the fuel filter, FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 10, FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. FIG. 14 is an exploded perspective view, and FIG. 14 is a plan view showing a fragile portion. As shown in FIGS. 11 and 12, the fuel filter 20 includes the filter member 50, the skeleton member 52, and the connection member 53 as described above.

  The filter member 50 is formed of a sheet-like filter medium that filters fuel. The filter medium is configured, for example, by laminating a plurality of resin nonwoven fabrics. A pair of double-sided portions 51 (A) and 51 (B) are formed by folding one filter medium in half. The outer peripheral edges of the double-sided portions 51 (A) and 51 (B) are joined by welding (see the welded portion 70) (see FIG. 10). Thus, the filter member 50 is formed into a flat bag shape, that is, a flat bag shape having a pair of planar portions 51 (A) and 51 (B) that form a parallel surface along one surface, that is, a vertical surface. Has been.

  As shown in FIG. 11, one planar portion 51 (A) is disposed rearward, and the other planar portion 51 (B) is disposed forward. The fold line of the filter member 50 is directed downward. The welding part 70 is formed on one plane at an intermediate position in the front-rear direction (thickness direction) of the filter member 50. A circular hole-shaped attachment hole 72 is formed in the vicinity of the lower end portion of the rear planar portion 51 (A). The filter member 50 is formed in a vertically long rectangular shape whose height in the vertical direction is larger than the horizontal width in the horizontal direction in the rear view (see FIG. 10).

  As shown in FIG. 13, the skeleton structure of the skeleton member 52 includes a plurality of (three are shown in FIG. 13) vertical crosspieces 74 and a plurality of (four are shown in FIG. 13) horizontal crosspieces 75. Are formed in a lattice frame shape. The horizontal rail portion 75 is formed with a pair of left and right stepped portions 76. Both stepped portions 76 are arranged in a straight line in the vertical direction. The central vertical beam portion 74 and the central portion of the horizontal beam portion 75 connected to the left and right of the vertical beam portion 74 are collectively referred to as a rear stage portion 78. The left and right vertical beam portions 74 and the left and right ends of the horizontal beam portion 75 connected to the vertical beam portion 74 are collectively referred to as a front stage portion 80. Both front stage portions 80 are formed so as to be shifted forward by one stage with respect to the rear stage portion 78. A connecting portion 82 for connecting the connecting member 53 is formed at the lower end portion of the rear stage portion 78.

  The connection part 82 has an inner clamping part 83 formed in an annular plate shape. On the rear surface of the inner clamping part 83, an annular annular convex part 84 projecting from the outer peripheral part is projected concentrically. A large number of rib-like support projections 85 projecting from the outer peripheral portion project from the front surface of the inner clamping portion 83 at a predetermined interval in the circumferential direction. The front end face of the support protrusion 85 is flush with the front face of the front stage 80. On the inner peripheral surface of the inner clamping portion 83, a pair of left and right engaging convex portions 86 that are opposed to each other protrude in a symmetrical manner.

  As shown in FIGS. 11 and 12, the rear stage portion 78 (including the inner clamping portion 83) of the skeleton member 52 is in contact with the rear planar portion 51 (A). The front portion 80 (including the support protrusion 85) of the skeleton member 52 is in contact with the front planar portion 51 (B). As a result, the double-sided parts 51 (A) and 51 (B) (specifically, the planar part excluding the outer peripheral part) are held in a state where they are spaced apart from each other, that is, in an enormous state. The rear planar portion 51 (A) corresponds to “one planar portion” in the present specification. Further, the front planar portion 51 (B) corresponds to “the other planar portion” in this specification. Further, the rear stage portion 78 corresponds to “one contact portion” in this specification. The front stage 80 corresponds to “the other contact part” in the present specification.

  As shown in FIG. 13, the pipe body 54 of the connection member 53 is formed in a round tubular shape. The pipe body 54 is formed with a connection port 55 that opens upward. A connected portion 88 for connecting the skeleton member 52 is formed at the front end portion of the tube main body 54. The connected portion 88 has an outer pinching portion 89 formed in an annular plate shape projecting radially outward at the central portion of the tube main body 54. A pair of left and right engaging hole portions 90 (one is shown in FIG. 13) penetrating in the radial direction are formed in the front end portion of the tube main body 54 (see FIG. 12).

  As shown in FIGS. 11 and 12, the front end portion of the tube body 54 is inserted into the hollow hole of the inner clamping portion 83 through the attachment hole 72 of the rear planar portion 51 (A). Along with this, both the engaging protrusions 86 and both the engaging hole portions 90 are snap-fit engaged by utilizing the elastic deformation of the inner clamping portion 83 and / or the tube main body 54. Thereby, the skeleton member 52 and the connection member 53 are connected. Further, the hole edge portion of the attachment hole 72 of the rear planar portion 51 (A) is sandwiched between the inner clamping portion 83 and the outer clamping portion 89 in a compressed state. Further, the hole edge portion of the attachment hole 72 is more strongly compressed by the annular convex portion 84 of the inner clamping portion 83. An annular seal portion is formed by the strongly compressed portion. The skeleton member 52 and the connection member 53 are connected prior to the welding of the double-sided portions 51 (A) and 51 (B).

  In the pump assembly 56 (see FIG. 5) before being assembled to the set plate 14, the filter member 50 is in a developed state (see the two-dot chain line 50 in FIG. 5). When the pump assembly 56 is assembled to the set plate 14, as described above, the left and right side portions of the filter member 50 are bent in a direction (rearward) with the rear planar portion 51 (A) as the inner side. . In order to make the bending easy, bending grooves 92 are formed symmetrically on the rear side surface of the end portion of the front beam 80 of the skeleton member 52 on the side of the stepped portion 76 of the crosspiece 75 (see FIG. 13).

  As shown in FIG. 14, the bending groove 92 has a V-shaped cross section. A thinned weakened portion 94 is formed in the horizontal crosspiece 75 by forming the bent groove 92. The bending groove 92 has a groove wall surface 92a continuous with the outer surface of the stepped portion 76, a groove wall surface 92b that forms a predetermined angle θ1 with respect to the groove wall surface 92a, and a semicircular cross section that connects the groove bottom surfaces 92a and 92b. And an arc-shaped groove bottom surface 92c. Therefore, the front stage 80 can be bent with a bending angle θ1 with respect to the rear stage 78 of the skeleton member 52.

  As shown in FIG. 13, the left and right fragile portions 94 are arranged in a straight line in the vertical direction across all the horizontal rail portions 75. Therefore, both front stage parts 80 can be bent backward from the rear stage part 78 of the skeleton member 52 with the weakened part 94 as a starting point. The bending angle θ2 (see FIG. 5) of the filter member 50 substantially matches the bending angle θ1 (see FIG. 14) of the skeleton member 52. The front stage 80 corresponds to a “folded part” in this specification.

  As shown in FIGS. 11 and 12, the rear stage portion 78 is in contact with the rear planar portion 51 (A) in the unfolded state (before bending) of the skeleton member 52. Further, the front stage portion 80 is in contact with the planar portion 51 (B) on the front side of the filter member 50. In this state, between the front step portion 80 and the rear surface portion 51 (A), the front step portion 80 is not in contact with the rear surface portion 51 (A) of the filter member 50. A slack receiving space 96 is formed (see FIG. 12). For this reason, as shown in FIG. 4, the slack portion 98 generated in the rear planar portion 51 (A) can be accommodated in the slack accommodating space 96 when the filter member 50 is bent.

  Next, the slack correction convex portion provided to correct the slack portion 98 generated in the rear planar portion 51 (A) in the bent state of the filter member 50 will be described. As shown in FIG. 4, the front end portions of both connecting wall portions 40 of the set plate 14 face the slack portion 98 of the planar portion 51 (A) on the rear side of the filter member 50. The slack correction convex part 100 protrudes from the outer surface of the front end part of both the connecting wall parts 40 (see FIGS. 5 and 6). FIG. 8 is a view showing the slack correction convex portion of the set plate.

  As shown in FIG. 8, the slack correction convex part 100 consists of a linear rib extended in an up-down direction. The lower end portion of the slack correction convex portion 100 is connected to the bottom plate portion 32 of the fuel reservoir 30. The upper end portion of the slack correction convex portion 100 is disposed at a position slightly away from the upper end of the connecting wall portion 40. The slack correction convex part 100 is formed in, for example, a semicircular cross section. The slack correction convex portion 100 presses a slack portion 98 that bulges to the rear planar portion 51 (A) into the slack accommodation space 96 (see FIG. 4).

  Next, the sticking prevention convex part provided in order to suppress sticking of the planar surface part 51 (B) with respect to the circular arc-shaped wall part 34 of the fuel reservoir part 30 is demonstrated. As shown in FIG. 4, the inner wall surface of the arc-shaped wall portion 34 of the fuel reservoir portion 30 of the set plate 14 faces the front surface portion 51 (B) with respect to the arc-shaped wall portion 34 of the fuel reservoir portion 30. Yes. A pair of left and right sticking prevention protrusions 102 protrude from the inner wall surface of the arc-shaped wall 34 (see FIG. 6). The both sticking prevention convex portions 102 are disposed at positions facing the outer side portion of the bent portion of the filter member 50. FIG. 9 is a view showing a sticking prevention rib of the set plate.

  As shown in FIG. 9, the sticking prevention convex part 102 consists of a linear rib extended in an up-down direction. The lower end portion of the sticking prevention convex portion 102 is connected to the bottom plate portion 32 of the fuel reservoir portion 30. The upper end portion of the sticking prevention convex portion 102 is disposed at a position slightly away from the upper end of the arcuate wall portion 34. The sticking prevention convex part 102 is formed, for example, in a semicircular cross section. The sticking prevention convex part 102 presses the planar part 51 (B) on the front side of the filter member 50 in a direction away from the arcuate wall part 34 (see FIG. 4). The arc-shaped wall portion 34 corresponds to “a wall portion facing the other planar portion” in the present specification.

  According to the fuel filter 20 described above, when the both side portions of the filter member 50, that is, both front-stage portions 80 of the skeleton member 52 are bent in the direction (rearward) with the rear planar portion 51 (A) inward (rearward), Although the slack portion 98 is generated in the planar portion 51 (A), a part or all of the slack portion 98 is accommodated in the slack accommodating space 96 of the skeleton member 52. Therefore, the expansion of the slack portion 98 of the planar portion 51 of the filter member 50 that accompanies the bending of both front-stage portions of the skeleton member 52 is suppressed, so that space saving of the filter member 50 can be achieved. Further, even if the slack portion 98 of the rear planar portion 51 (A) is accommodated in the slack accommodating space 96 of the skeleton member 52, only wrinkles due to the slack portion 98 are formed, and the filtration performance is hardly affected. .

  According to the mounting structure of the fuel filter 20 described above, the lower end portion of the filter member 50 is disposed in the fuel reservoir 30, so that the slack portion 98 that bulges on the rear planar portion 51 (A) is slack. The slack receiving space 96 is pressed by the correction convex part 100. Thereby, the swelling of the slack portion 98 of the rear planar portion 51 (A) can be suppressed. As a result, the volume of the fuel reservoir 30 of the set plate 14 can be reduced together with the installation space of the filter member 50, and the mounting structure of the fuel filter 20 can be made compact. The lower end portion of the filter member 50 corresponds to “one end portion in a direction crossing the bending direction of the filter member” in the present specification.

  In addition, the front surface portion 51 (B) of the filter member 50 is pressed and separated from the arc-shaped wall portion 34 by the sticking prevention convex portion 102 formed on the arc-shaped wall portion 34 of the fuel reservoir 30. Thereby, sticking of the planar part 51 (B) of the front side of the filter member 50 with respect to the circular arc-shaped wall part 34 of the fuel reservoir part 30 can be suppressed.

[Embodiment 2] In the present embodiment, since the weakened portion 94 of the skeleton member 52 of the first embodiment is modified, the modified portion will be described and redundant description will be omitted. FIG. 15 is a perspective view of the skeleton member as seen from the rear side, and FIG. 16 is a view showing the fragile portion. As shown in FIG. 15, in this embodiment, a pair of upper and lower notch grooves 104 are formed symmetrically in the upper and lower ends at the end portion on the stepped portion 76 side of the horizontal beam portion 75 of both front step portions 80 of the skeleton member 52. (See FIG. 16). The cutout groove 104 is formed in a semicircular groove shape. Due to the formation of the notch groove 104, a fragile portion 106 having a reduced width is formed in the horizontal crosspiece 75. The left and right fragile portions 106 are arranged in a straight line in the vertical direction across all the crosspieces 75. Therefore, both the front stage portions 80 can be bent backward with respect to the rear stage portion 78 of the skeleton member 52 with the fragile portion 106 as a starting point.

[Embodiment 3] Since this embodiment is a modification of the skeleton member 52 of Embodiment 2, the changed portion will be described, and a duplicate description will be omitted. FIG. 17 is a cross-sectional view showing the fuel filter, and FIG. 18 is a perspective view of the skeleton member as seen from the rear side. As shown in FIG. 17, in this embodiment, a columnar protrusion 108 protrudes from the rear surface of the intersection of the vertical beam portion 74 and the horizontal beam portion 75 in both front stage portions 80 of the skeleton member 52 (FIG. 18). reference). The front end surface (rear end surface) of the protrusion 108 is flush with the rear surface of the rear stage portion 78. The protrusions 108 can hold the opposing surfaces of the vertical beam portion 74 of the front step portion 80 and the rear planar portion 51 (A) at a predetermined interval. In this case, a space portion between the stepped portion 76 of the skeleton member 52 and the protruding portion 108 is a slack accommodating space 96. In other words, the slack portion 98 can be accommodated in the slack accommodating space 96 to achieve compactness. Further, by maintaining the left and right side portions of the filter member 50 in an enormous state by the protrusions 108, it is possible to suppress a decrease in filtration performance.

[Other Embodiments] The present invention is not limited to the above-described embodiments, and modifications can be made without departing from the present invention. For example, the fuel filter 20 of the present invention is not limited to vehicles, and may be applied to fuel filters of various fuel pump modules such as ships and industrial machines. The fuel filter 20 is not limited to the bottom-mounted fuel pump module 10 attached to the bottom wall portion 12 a of the fuel tank 12, and is applied to an upper-type fuel pump module mounted on the upper portion of the fuel tank 12. Also good. Moreover, the filter member 50 should just be a bag shape, and may change the external shape suitably. The filter member 50 may be bent in a curved shape. Further, in the embodiment, in the filter member 50, one filter medium is folded in two and the peripheral portions are welded to each other, but the peripheral portions of the two filter media may be welded over the entire circumference.

  Further, in the embodiment, the front stage 80 as the other contact portion of the skeleton member 52 is the bent portion, but depending on the configuration of the skeleton member, the other contact portion of a part of the other contact portion is the bent portion. Also good. Further, the number of slack accommodation spaces may be increased or decreased. In addition, the number of rows of vulnerable portions may be increased or decreased. The cross-sectional shape of the bending groove 92 or the notch groove 104 may be changed as appropriate. Further, the fuel reservoir 30 only needs to be arranged, that is, accommodate at least one end in a direction intersecting the bending direction of the filter member 50. Further, the number, outer shape, cross-sectional shape, and the like of the slack correction convex portions 100 may be changed as appropriate. Further, the number of sticking prevention convex portions 102, the outer shape, the cross-sectional shape, and the like may be changed as appropriate.

10 Fuel Pump Module 12 Fuel Tank 12a Bottom Wall (Bottom)
14 Set plate (lid member)
20 fuel filter 30 fuel reservoir 31 peripheral wall 32 bottom plate 34 arcuate wall (wall facing the other planar part)
50 Filter member 51 (A) Rear planar portion (one planar portion)
51 (B) Frontal planar part (the other planar part)
52 skeleton member 63 opening 78 rear part (one contact part)
80 Front part (the other contact part, bent part)
94 fragile portion 96 slack accommodation space 98 slack portion 100 slack correction convex portion 102 sticking prevention convex portion 106 fragile portion

Claims (3)

A bag-shaped filter member for filtering fuel;
A skeletal member that is disposed in the internal space of the filter member and holds the filter member in an enormous state;
With
The filter member has a pair of double-sided portions forming a parallel surface shape,
The skeleton member is a fuel filter having one contact portion that contacts one of the planar portions and the other contact portion that contacts the other planar portion,
The skeleton member has a bent portion formed so as to be foldable in a direction in which the one planar portion is inside,
A fuel filter, wherein a slack accommodating space for accommodating a slack portion generated in the one planar portion by bending of the skeleton member is formed on a side of the bent portion facing the one planar portion. The fuel filter mounting structure according to claim 1,
A lid member for closing an opening formed at the bottom of the fuel tank;
The lid member is formed with a fuel reservoir portion having an upper surface opening for storing fuel,
The filter member is disposed in the fuel reservoir at least one end in a direction intersecting the folding direction in a folded state.
The fuel filter mounting structure, wherein the lid member is formed with a slack correction convex portion that presses a slack portion of the one planar portion against the slack receiving space. A fuel filter mounting structure according to claim 2,
Attachment of a fuel filter, wherein a wall portion facing the other planar portion of the fuel reservoir portion is formed with a sticking prevention convex portion that presses the other planar portion in a direction away from the wall portion. Construction.

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