JP2018071367A - Wiring holding structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring holding structure which can inhibit damage and removal of electric wiring electrically connecting a fuel pump module with an electric connector.SOLUTION: A wiring holding structure includes: a fuel pump and a sender gauge 49 disposed in a fuel tank 12; a flange unit 14 which closes an opening hole 21 of the fuel tank 12 and has an electric connector 28 electrically connected with the outside; and lead wires 57, 70 electrically connecting the fuel pump and the sender gauge 49 with the electric connector 28. The wiring holding structure includes a holding member 84 having a holding groove which holds lead wires 57, 70 so that the lead wires 57, 70 can be displaced and in which a longitudinal direction is set.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wiring holding structure.

  2. Description of the Related Art Conventionally, for example, a fuel supply apparatus that sucks fuel in a fuel tank mounted on a vehicle such as an automobile and supplies the fuel to an internal combustion engine (hereinafter referred to as “engine”) is known. The fuel supply device includes a fuel pump module, a lid member, and electrical wiring. The fuel pump module is disposed in the fuel tank and has a fuel pump. The lid member has an electrical connector that closes the opening hole of the fuel tank and is electrically connected to the outside. The electrical wiring electrically connects the fuel pump of the fuel pump module and the electrical connector. It is necessary to hold the electric wiring so that the electric wiring does not fluctuate due to the vibration of the vehicle or the vibration of the fuel pump module. For this reason, the cited document 1 describes a wiring holding structure provided with a regulating member having a wiring restraint portion for restraining electrical wiring.

JP 2013-221470 A

  The wiring restraint part of the wiring holding structure described in Patent Document 1 restrains the electrical wiring so that it cannot be displaced or substantially cannot be displaced. Therefore, when the fuel tank is deformed due to a change in the tank internal pressure or a change in the fuel amount, and the relative position between the lid member and the fuel pump module changes, the electrical wiring mainly supports the wiring restraint portion when the relative position is close. Bend as For this reason, a load is applied to the restraining portion of the electrical wiring and the vicinity thereof, and the coating material of the electrical wiring is damaged when it is severe. In the case of a pen clip-shaped wiring restraint portion (see FIG. 9 of Patent Document 1), when the relative position between the lid member and the fuel pump module is close, the electrical wiring is routed around the wiring restraint portion as a fulcrum. By being bent in a direction away from the wiring, the electric wiring is easily detached from the wiring restraint portion. The problem to be solved by the present invention is to provide a wiring holding structure capable of suppressing breakage and disconnection of an electrical wiring that electrically connects an electrical device in a fuel tank and an electrical connector of a lid member. .

  The above problem can be solved by the present invention. According to a first aspect of the present invention, there is provided an electrical device disposed in a fuel tank, a lid member having an electrical connector that closes an opening of the fuel tank and is electrically connected to the outside, the electrical device, and the electrical connector And a wiring holding structure including a holding member having a holding groove provided in a longitudinal direction for holding the electric wiring so as to be displaceable. According to this configuration, the electrical wiring that electrically connects the electrical device in the fuel tank and the electrical connector of the lid member is held in the holding groove of the holding member so as to be displaceable in the longitudinal direction of the holding groove. Thereby, when the fuel tank is deformed by the change in the tank internal pressure or the change in the fuel amount and the relative position between the lid member and the electric device changes, the electric wiring is displaced in the longitudinal direction of the holding groove according to the change. . Thereby, the deformation | transformation of an electrical wiring is suppressed and the load concerning an electrical wiring can be suppressed. For this reason, breakage and disconnection of the electrical wiring can be suppressed.

  In a second aspect based on the first aspect, the holding member has a wiring introduction path having one end communicating with the groove opening of the holding groove and the other end opened as an introduction port. The longitudinal direction of the holding groove is the same direction as the depth direction of the fuel tank, and the wiring introduction path is formed so that the introduction direction of the electric wiring is different from the longitudinal direction of the holding groove. This is a wiring holding structure. According to this configuration, since the introduction direction of the electric wiring in the wiring introduction path is different from the longitudinal direction of the holding groove, which is the same direction as the depth direction of the fuel tank, the inside of the holding groove to the wiring introduction path Retrograde is suppressed. Thereby, the disconnection of the electrical wiring can be effectively suppressed.

  According to a third invention, in the first or second invention, the holding member includes a guide member that can contact and slide with respect to a rim portion of the opening hole when passing through the opening hole of the fuel tank. This is a wiring holding structure. According to this configuration, when the holding member passes through the opening hole of the fuel tank and the guide member comes into contact with the edge portion of the opening hole of the fuel tank, the guide member slides with respect to the opening edge portion. . As a result, the contact of the holding member with the edge of the opening hole of the fuel tank is suppressed, the holding member can be smoothly inserted into the fuel tank, and the holding member can be protected. .

  In a fourth aspect based on the third aspect, the one groove wall portion of the holding groove is disposed along one side of the wiring introduction path, and the guide member is located on the other side of the wiring introduction path. The wiring holding structure in which the wiring introduction path is formed by one groove wall portion of the holding groove and the guide member. According to this configuration, the electrical wiring can be smoothly introduced into the holding groove from the introduction port of the wiring introduction path.

  According to a fifth invention, in the third or fourth invention, the holding member includes an elastically deformable bending portion that opens and closes a groove opening of the holding groove, and the elastic deformation of the bending portion in a positive direction is provided. The electric wiring can be introduced into the holding groove, and the elastic deformation can be regulated by contacting the guide member when the elastic portion is elastically deformed in the reverse direction. Structure. According to this configuration, the electrical wiring is introduced into the holding groove from the wiring introduction path by elastic deformation in the positive direction of the bending portion. Further, at the time of elastic deformation in the reverse direction of the bending portion, the elastic deformation is regulated by the bending portion coming into contact with the guide member. For this reason, it is possible to effectively prevent detachment of the electrical wiring by preventing the electrical wiring from going backward from the inside of the holding groove to the wiring introduction path.

  According to a sixth invention, in any one of the third to fifth inventions, a joint member that connects the electric device side and the lid member side is provided, and the joint member is an opening hole of the fuel tank. An auxiliary guide member that can contact and slide with respect to the edge of the opening hole when passing through the auxiliary hole, and the auxiliary guide member includes the auxiliary guide member and the guide member at two points. The wiring holding structure is arranged so that the holding member does not come into contact with the edge of the mouth when it contacts and slides. According to this configuration, when the auxiliary guide member comes into contact with the opening edge of the fuel tank when the auxiliary guide member passes through the opening hole of the fuel tank, the auxiliary guide member is in contact with the opening edge of the fuel tank. Slide. Further, when the guide member and the auxiliary guide member are in contact with and slide on the mouth edge of the opening hole of the fuel tank at two points, contact of the holding member with the mouth edge is suppressed. For this reason, the holding member can be inserted into the fuel tank more smoothly, and the holding member can be effectively protected.

It is a perspective view which shows the fuel supply apparatus concerning one Embodiment. It is a front view which shows a fuel supply apparatus. It is a right view which shows a fuel supply apparatus. It is a plane sectional view showing a fuel supply device. It is a perspective view which shows the peripheral part of a holding member. It is a perspective view which shows a joint member. It is the perspective view which looked at the holding member from diagonally right rear. It is a front view which shows a holding member. It is a left view which shows a holding member. It is a right view which shows a holding member. It is a top view which shows a holding member. It is XII-XII sectional view taken on the line of FIG. FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 12.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. The wiring holding structure according to this embodiment is applied to a fuel supply device that supplies fuel in a fuel tank mounted on a vehicle such as an automobile on which the engine is mounted to the engine. 1 is a perspective view showing the fuel supply device, FIG. 2 is a front view, FIG. 3 is a right side view, and FIG. 4 is a plan sectional view. The arrows in the figure indicate the front, rear, left, right, up and down directions of the fuel supply device. 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 supply device 10 is provided in the fuel tank 12. The fuel supply device 10 includes a flange unit 14, a pump unit 16, and a joint member 18. For convenience of explanation, the fuel tank 12, the flange unit 14, the pump unit 16, and the joint member 18 will be described in this order. The flange unit 14 corresponds to a “lid member” in this specification. The pump unit 16 corresponds to a “fuel pump module” in this specification.

  The fuel tank 12 is made of resin and is formed in a hollow container shape having a horizontal upper wall portion 20 and a bottom wall portion 22. A circular opening 21 is formed in the upper wall portion 20. The fuel tank 12 is mounted with the upper wall portion 20 and the bottom wall portion 22 in a horizontal state with respect to the vehicle. Liquid fuel such as gasoline is stored in the fuel tank 12. The fuel tank 12 is deformed (expanded and contracted) due to a change in the tank internal pressure or a change in the amount of fuel, and the relative position, that is, the interval between the upper wall portion 20 and the bottom wall portion 22 changes (stretches).

  The flange unit 14 is made of resin and has a disk-shaped flange main body 24. The flange body 24 is attached to the upper wall portion 20 of the fuel tank 12 so as to close the opening hole 21.

  As shown in FIG. 1, the flange body 24 is formed with a discharge port 26, an electrical connector 28, a canister 30 and the like. Although not shown, a fuel supply pipe connected to the engine is connected to the discharge port 26 on the upper surface side of the flange unit 14. The electrical connector 28 is connected to an external connector connected to a vehicle battery and a control circuit.

  The canister portion 30 is formed in a hollow container shape that protrudes from the rear portion of the flange main body 24. The canister portion 30 has a semi-cylindrical peripheral wall portion 31 concentric with the flange body 24, a lower closing portion 32 that closes the lower surface opening of the peripheral wall portion 31, and an upper closing portion 33 that closes the upper surface opening of the peripheral wall portion 31. doing. A pair of left and right rail portions 35 are formed on the front surface side of the peripheral wall portion 31. (See FIG. 4). Both rail portions 35 extend linearly in the vertical direction (the front and back direction in FIG. 4). A pen clip-shaped hook piece 37 is formed on the upper right portion on the front side of the peripheral wall portion 31. In the canister unit 30, an adsorbent (for example, activated carbon) capable of adsorbing and desorbing evaporated fuel generated in the fuel tank 12 is stored.

  The upper closing portion 33 of the canister portion 30 is formed with an evaporation port 39, an atmospheric port 40 and a purge port 41 communicating with the canister portion 30. The evaporation port 39 allows the fuel vapor discharged from the fuel tank 12 to flow into the canister unit 30. The atmosphere port 40 allows the atmosphere (air) to flow into the canister 30 when the fuel vapor adsorbed by the adsorbent of the canister 30 is desorbed. The purge port 41 allows the fuel vapor desorbed from the adsorbent of the canister 30 to flow out. The derived fuel vapor is purged into the intake passage of the engine.

  As shown in FIG. 4, the pump unit 16 includes a sub tank 43, a fuel pump 45, a fuel filter 47, a sender gauge 49, and the like. The sub tank 43 is made of resin and has a bottomed cylindrical shape. A pair of left and right rail portions 51 are formed on the rear surface portion of the sub tank 43. Both rail parts 51 are extended in the up-down direction (paper surface front-back direction in FIG. 4). The rail portion 35 of the flange unit 14 is referred to as a “rear rail portion 35”, and the rail portion 51 of the sub tank 43 is referred to as a “front rail portion 51”. The sub tank 43 is disposed on the bottom wall portion 22 of the fuel tank 12 (see FIGS. 2 and 3).

  The fuel pump 45 is an in-tank electric fuel pump that sucks fuel from the sub-tank 43 and boosts the pressure by a rotating member such as an impeller that is rotated by an electric motor housed therein. Foreign matter contained in the fuel sucked into the fuel pump 45 is removed by the suction filter 53. The fuel pump 45 corresponds to an “electric device” in this specification.

  As shown in FIG. 3, a jet pump 55 is provided at the lower end portion of the right side surface portion of the sub tank 43. The jet pump 55 transfers the fuel in the fuel tank 12 into the sub tank 43 by operating with the fuel discharged by the fuel pump 45 (see FIG. 4).

  As shown in FIG. 4, the fuel filter 47 is formed in a substantially hollow cylindrical shape whose axial direction is the vertical direction. A fuel pump 45 is accommodated in a vertical state in a hollow portion of the fuel filter 47. In the opening 47 a on the upper surface of the fuel filter 47, one end of two flexible power supply lead wires 57 is electrically connected to the fuel pump 45. The other end of the lead wire 57 is electrically connected to the electrical connector 28 on the lower surface side of the flange unit 14 (see FIG. 3). Electric power supplied from the vehicle battery to the electrical connector 28 is transmitted to the fuel pump 45 by the two lead wires 57.

  The fuel filter 47 removes foreign matters contained in the fuel discharged by the fuel pump 45. The fuel that has passed through the fuel filter 47 is discharged from the discharge port 61 via the pressure regulator 59. The pressure regulator 59 adjusts the pressure of the fuel discharged from the fuel pump 45 to a predetermined pressure, discharges the adjusted fuel from the discharge port 61, and discharges excess surplus fuel into the sub tank 43.

  For example, one end of a fuel pipe 63 made of a resin corrugated tube is connected to the discharge port 61. The other end of the fuel pipe 63 is connected to the discharge port 26 on the lower surface side of the flange unit 14 (see FIG. 2). The fuel pipe 63 transfers the fuel discharged by the pump unit 16 to the discharge port 26.

  As shown in FIG. 3, a gauge body 65 of a sender gauge 49 is attached to the upper portion of the right side surface portion of the peripheral wall portion 31 of the sub tank 43. An arm 66 is provided on the gauge body 65 so as to be rotatable in the vertical direction. A float 67 is attached to the tip of the arm 66. The float 67 has buoyancy with respect to the fuel in the fuel tank 12. The sender gauge 49 corresponds to an “electric device” in this specification. The sender gauge 49 corresponds to a “fuel amount detection device” that detects the amount of fuel in the fuel tank 12.

  One end of three flexible signal wire leads 70 is electrically connected to the gauge body 65. The other end of the lead wire 70 is electrically connected to the electrical connector 28 from the lower surface side of the flange unit 14. The electric power supplied from the vehicle battery is transmitted to the sender gauge 49 through the three lead wires 70, and a signal corresponding to the height position of the float 67 in the fuel tank 12 is controlled via the electric connector 28. Transmitted to the device. The lead wire 70 has a wire diameter smaller than that of the lead wire 57.

  The joint member 18 is disposed between the canister portion 30 of the flange unit 14 and the sub tank 43 of the pump unit 16. FIG. 6 is a perspective view showing the joint member. As shown in FIG. 6, the joint member 18 is made of resin, and is formed in a vertically long strip shape that is flat in the front-rear direction and extends in the vertical direction. Two pairs of front and rear rail grooves 72 and 74 are formed on the left and right sides of the joint member 18. Each of the rail grooves 72 and 74 is formed in a U-shaped groove shape extending linearly in the vertical direction. The opening of each rail groove 72, 74 is directed in the opposite direction. The front rail groove 72 is referred to as “front rail groove 72”, and the rear rail groove 74 is referred to as “rear rail groove 74”. The pair of rear rail grooves 74 are arranged to be shifted by a predetermined amount to the left with respect to the pair of front rail grooves 72.

  As shown in FIG. 4, the pair of front rail portions 51 of the sub tank 43 are engaged with the pair of front rail grooves 72 so as to be slidable within a predetermined range in the vertical direction. In the pair of rear rail grooves 74, the pair of rear rail portions 35 of the flange unit 14 are engaged with each other so as to be slidable within a predetermined range in the vertical direction. Between each rail part 51 and 35 and each rail groove 72 and 74 which are mutually engaged, the metal retainer 76 for improving the mutual slidability is interposed.

  The flange unit 14 and the pump unit 16 are connected via a joint member 18 so as to be capable of relative displacement within a predetermined range in the vertical direction (see FIG. 3). Thereby, even when the distance between the upper wall portion 20 and the bottom wall portion 22 of the fuel tank 12 changes due to a change in the tank internal pressure or a change in the amount of fuel, the relative position between the flange unit 14 and the pump unit 16 changes. The spacing between them can vary. Therefore, it is possible to prevent an excessive force from acting on the fuel tank 12, the flange unit 14, the sub tank 43, and the like. The flange unit 14 corresponds to the “lid member side” in the present specification, and the pump unit 16 corresponds to the “electric device side” in the specification.

  Also, the two lead wires 57 for the fuel pump 45, the three lead wires 70 for the sender gauge 49, and the fuel pipe 63 for fuel transfer are in a state where the flange unit 14 and the pump unit 16 are farthest apart. It has the required length. For this reason, in the assembled state of the flange unit 14 and the pump unit 16, the lead wires 57 and 70 and the fuel pipe 63 are bent (see FIG. 3). Further, according to the change in the distance between the flange unit 14 and the pump unit 16, the amount of bending of the lead wires 57 and 70 and the fuel pipe 63 increases or decreases. The lead wires 57 and 70 correspond to “electrical wiring” in this specification.

  As shown in FIG. 6, a U-shaped groove-like recess 78 is formed on the upper end surface of the joint member 18. On the bottom surface of the recess 78, a hollow cylindrical guide column 80 is vertically formed.

  As shown in FIG. 2, a spring 82 made of a coil spring is interposed between the opposing surfaces of the flange unit 14 and the joint member 18. The spring 82 is fitted to the guide column 80 (see FIG. 4). The spring 82 urges the sub tank 43 downward via the joint member 18. Accordingly, the sub tank 43 is elastically pressed onto the bottom wall portion 22 of the fuel tank 12 regardless of a change in the interval between the flange unit 14 and the pump unit 16.

  In order to prevent the lead wires 57 and 70 from wobbling due to the vibration of the vehicle or the pump unit 16, the lead wires 57 and 70 are held together on the hook piece 37 of the flange unit 14 (FIGS. 2 and 3). And FIG. 4). Lead wires 57 and 70 are fixedly held on the hook piece 37.

  Between the fuel pump 45 and the sender gauge 49 (specifically, the gauge body 65) of the pump unit 16 and the hook piece 37, the lead wires 57 and 70 are held together by a holding member 84 provided on the joint member 18. (See FIG. 4). The holding member 84 will be described later.

  Next, the operation of the fuel supply device 10 will be described. When the fuel pump 45 is driven by the electric power from the vehicle battery, the fuel in the sub tank 43 is sucked into the fuel pump 45 through the suction filter 53 and the pressure is increased. The fuel is filtered by the fuel filter 47, the fuel pressure is adjusted by the pressure regulator 59 and discharged to the fuel pipe 63, and then supplied to the engine from the discharge port 26 of the flange unit 14.

  Next, the wiring holding structure including the holding member 84 that holds the lead wires 57 and 70 will be described. As shown in FIG. 6, the holding member 84 is formed on the front side of the groove wall portion (reference numeral 86 is attached) on the front side of the front rail groove 72 on the right side of the joint member 18. The holding member 84 holds the lead wires 57 and 70 drawn from the pump unit 16 side so as to pass from the diagonally upper left side to the diagonally rear right side (see FIGS. 1 and 5). FIG. 5 is a perspective view showing the periphery of the holding member.

  The holding member 84 is disposed at a position where the lead wires 57 and 70 are easily displaced in the vertical direction in accordance with a change in the interval between the flange unit 14 and the pump unit 16. The holding member 84 is disposed at a position where it does not interfere with the sub tank 43 (including the right front rail portion 51) at the lowest position of the joint member 18 with respect to the sub tank 43.

  7 is a perspective view of the holding member as viewed from the right rear, FIG. 8 is also a front view, FIG. 9 is a left side view, FIG. 10 is a right side view, FIG. 11 is a plan view, and FIG. FIG. 13 is a cross-sectional view taken along line XII-XII, and FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. As shown in FIG. 7, the holding member 84 has an upper plate portion 87, a lower plate portion 89, a vertical wall portion 91, a hook portion 93, and a guide portion 95. The lower plate portion 89 has a protruding portion 89a that protrudes forward from the groove wall portion 86 on the front side of the joint member 18 with a predetermined lateral width (width in the left-right direction) and projects rightward at the distal end portion (front end portion). (Refer to FIG. 12). On the lower surface side of the lower plate portion 89, a huge portion 89b protruding in an inverted mountain shape is formed.

  The upper plate portion 87 is formed in a horizontal plate shape that gradually increases in lateral width (lateral width) from the groove wall portion 86 on the front side of the joint member 18 toward the front (see FIG. 11). The upper plate portion 87 and the lower plate portion 89 are in parallel with a predetermined interval. The left edge portion of the upper plate portion 87 is orthogonal to the front surface of the groove wall portion 86 on the front side of the joint member 18. A drooping wall portion 87a that is substantially L-shaped in plan view and hangs down by a predetermined amount is formed on the left edge portion and the front edge portion of the upper plate portion 87 (see FIGS. 8 and 9). A lateral rib portion 87b extending in the left-right direction and projecting a predetermined amount rearward is formed on the lower edge of the front side portion of the hanging wall portion 87a (see FIG. 10).

  The vertical wall portion 91 is formed in a columnar shape between a rear portion on the right side of the lower plate portion 89 and a rear portion of the upper plate portion 87 (including the hanging wall portion 87a). A vertical rib portion 91a is formed at the front end of the vertical wall portion 91 so as to extend linearly in the vertical direction and project a predetermined amount to the right (see FIG. 12). The vertical wall portion 91 (including the vertical rib portion 91a) is connected to the front groove wall portion 86, the upper plate portion 87 (including the drooping wall portion 87a), and the lower plate portion 89 of the joint member 18 ( FIG. 8 to FIG. 11).

  The hook portion 93 is formed in a strip shape extending linearly downward from the right end portion of the front side portion of the hanging wall portion 87 a of the upper plate portion 87. The lower end portion of the hook portion 93 faces the protruding portion 89a of the lower plate portion 89 with a predetermined gap 97 therebetween (see FIGS. 9, 10 and 13). The gap 97 is set smaller than the diameter of the narrower lead wire 70 of the lead wires 57 and 70.

  The lower plate portion 89, the upper plate portion 87, the vertical wall portion 91, and the hook portion 93 form a vertically long rectangular holding groove 99 having the gap 97 as a “groove opening 97” (the same reference numeral is assigned to the gap). (See FIGS. 9, 10 and 12). The holding groove 99 is formed with a groove depth (height) that holds the two lead wires 57 and the three lead wires 70 so as to be movable in the same direction as the depth direction (vertical direction) of the fuel tank 12. (See FIG. 9 and FIG. 10). In FIG. 10, the three lead wires 70 are arranged on the back side (upper side) from the two lead wires 57, but the arrangement order may be changed as appropriate. The groove depth direction, that is, the longitudinal direction of the holding groove 99 is the same direction as the depth direction of the fuel tank 12.

  The hook portion 93 is formed so as to be elastically deformable in the front-rear direction, so-called flexural deformation. The hook portion 93 is bent backward (in the positive direction), so that the groove opening 97 is expanded larger than the wire diameter of the lead wire 57 (see the two-dot chain line A in FIG. 10). Further, the width (dimension in the left-right direction) of the hook portion 93 is set larger than the plate thickness (dimension in the front-rear direction) (see FIG. 12). For this reason, the rigidity with respect to the left-right direction of the hook part 93 is increased. Therefore, it is possible to suppress the deformation of the hook portion 93 in the disengagement direction, that is, the right direction associated with the deformation of the lead wires 57 and 70 held by the holding member 84. The hook portion 93 corresponds to a “flexible portion” and “one groove wall portion of the holding groove 99” in this specification.

  A protruding portion 93a that bulges to the right is formed at the lower end of the hook portion 93 (see FIG. 13). The overhang portion 93a is formed in a substantially triangular shape with the hook portion 93 side as a base. The overhanging portion 93 a increases the pressing area of the hook portion 93 when the lead wires 57 and 70 are inserted into the holding groove 99. Thereby, the insertability of the lead wires 57 and 70 can be improved.

  The guide portion 95 is formed in a square bar shape that is inclined obliquely upward and forward from the front end portion of the lower plate portion 89 (including the enormous portion 89b) (see FIGS. 9 and 10). The guide portion 95 is formed in a rectangular shape with a long cross section that is larger in the left-right direction than in the front-rear direction. The outer surface of the guide portion 95 is continuous with a gentle curve in the vertical direction. The guide portion 95 can contact and slide on the rim portion 21a of the opening hole 21 when the holding member 84 passes through the opening hole 21 of the fuel tank 12 (see FIG. 12). The right end portion on the front side of the guide portion 95 that is in contact with and slides on the rim portion 21a of the opening hole 21 is rounded.

  Between the guide portion 95 and the hook portion 93, there is formed a wiring introduction path 101 having a lower end communicating with the groove opening 97 of the holding groove 99 and an upper end opened as an introduction port 101a (FIG. 9). And FIG. 10). Thereby, the wiring introduction path 101 is formed so that the introduction direction of the lead wires 57 and 70 (obliquely obliquely backward from the top) is different from the longitudinal direction (vertical direction) of the holding groove 99. The opening width in the front-rear direction of the wiring introduction path 101 is formed in a tapered shape that gradually expands upward from the lower end. Both front and rear side surfaces of the wiring introduction path 101 (the front surface of the hook portion 93 and the rear side surface of the guide portion 95 facing the front surface are formed in a plane facing in the front-rear direction. This corresponds to a “guide member”.

  When the hook portion 93 is bent forward (reverse direction) by the bending deformation of the lead wires 57 and 70 held in the holding groove 99, the lower end portion of the hook portion 93 abuts on the guide portion 95 (in FIG. (See dotted line B). Thereby, the bending deformation of the hook part 93 is regulated. This prevents the lead wires 57 and 70 from going backward from the holding groove 99 to the wiring introduction path 101, so that the detachment of the lead wires 57 and 70 can be effectively suppressed.

  Further, the height position of the tip (upper end) of the guide portion 95 is set to a position lower by a predetermined amount than the height position of the upper end of the upper plate portion 87 (including the drooping wall portion 87a). For this reason, when inserting the lead wires 57 and 70 into the wiring introduction path 101, the lead wires 57 and 70 are pressed against the front surface of the upper end portion of the upper plate portion 87 (including the drooping wall portion 87a) and then moved downward. be able to. Further, when the lead wires 57 and 70 are pressed against the front surface of the upper end portion of the upper plate portion 87 (including the hanging wall portion 87a), the tip end portion (upper end portion) of the guide portion 95 hardly interferes.

  As shown in FIG. 6, the right edge of the rear groove wall portion (reference numeral 103) on the right front rail groove 72 on the right side of the joint member 18 projects rightward at the center in the vertical direction, and A convex edge 105 extending in the vertical direction is formed (see FIG. 11). The convex edge part 105 is formed in a trapezoidal shape with the end edge part of the rear groove wall part 103 as the base. The convex edge portion 105 has an upper inclined surface 105a inclined obliquely downward to the right from the upper end side, and a lower inclined surface 105b inclined obliquely upward to the right from the lower end side. Further, the convex edge portion 105 is arranged on the opposite side to the guide portion 95 in the holding member 84, that is, on the rear side. The convex edge portion 105 corresponds to an “auxiliary guide member” in this specification.

  Next, an example of a procedure for assembling the flange unit 14 and the pump unit 16 of the fuel supply device 10 will be described. The flange unit 14 and the pump unit 16 are connected via a joint member 18 so as to be slidable in the vertical direction. The two lead wires 57 of the fuel pump 45 and the three lead wires 70 of the sender gauge 49 are connected to the electrical connector 28 of the flange unit 14. Further, the two lead wires 57 and the three lead wires 70 are collectively held by the hook piece 37 of the flange unit 14. Further, the fuel pipe 63 connected to the discharge port 61 of the pump unit 16 is connected to the discharge port 26 of the flange unit 14.

  Next, the two lead wires 57 and the three lead wires 70 are collectively held by the holding member 84 of the joint member 18. Specifically, the operator introduces the lead wires 57 and 70 from the introduction port 101a while holding the portion on the pump unit 16 side of the lead wires 57 and 70 with the left hand and the portion on the flange unit 14 side with the right hand. Insert into the path 101. At this time, the lead wires 57 and 70 are pressed against the front surface of the upper plate portion 87 (including the hanging wall portion 87a) of the holding member 84 and then moved downward, so that the lead wires 57 and 70 are moved to the wiring introduction path 101. It can be inserted smoothly. Subsequently, the lead wires 57 and 70 are moved downward along the wiring introduction path 101 from the introduction port 101a.

  Next, at the lower end portion of the wiring introduction path 101, as the lead wires 57 and 70 are moved to the holding groove 99 side, that is, backward, the hook portion 93 is bent backward (see the two-dot chain line A in FIG. 10). . As a result, the groove opening 97 is expanded so that the lead wires 57 and 70 pass through the groove opening 97 and are inserted into the holding groove 99. The lead wires 57 and 70 inserted in the holding groove 99 are accommodated in the holding groove 99. As a result, the lead wires 57 and 70 drawn from the pump unit 16 side are held by the holding member 84 so as to pass from the upper left side to the right rear side. This completes the assembly of the flange unit 14 and the pump unit 16 of the fuel supply device 10.

  Next, an example of a procedure for assembling the fuel supply device 10 to the fuel tank 12 of the vehicle will be described. The pump unit 16 is inserted into the fuel tank 12 through the opening hole 21 with the flange unit 14 and the pump unit 16 being farthest apart in the vertical direction. Next, the pump unit 16 is moved forward together with the pump unit 16 so that the flange unit 14 is positioned above the opening 21 of the fuel tank 12. Thereafter, the flange unit 14 is lowered so as to be fitted into the opening hole 21 of the fuel tank 12.

  At this time, when the convex edge portion 105 of the joint member 18 passes through the opening hole 21 of the fuel tank 12, the lower inclined surface 105 b of the convex edge portion 105 abuts the mouth edge portion 21 a of the opening hole 21. The lower inclined surface 105b slides relative to the mouth edge 21a. As a result, contact of the convex edge portion 105 with respect to the rim portion 21a of the opening hole 21 is suppressed, and the joint member 18 can be smoothly inserted into the fuel tank 12 and the holding member 84 is protected. can do. Further, contact of the holding member 84 with the rim portion 21a of the opening hole 21 is suppressed, and the holding member 84 can be smoothly inserted into the fuel tank 12 and the hook portion 93 of the holding member 84 can be smoothly inserted. Can be protected.

  In addition, when the holding member 84 of the joint member 18 passes through the opening hole 21 of the fuel tank 12 and the guide portion 95 comes into contact with the mouth edge portion 21a of the opening hole 21, the guide member 95 guides the mouth edge portion 21a. The part 95 slides. Thereby, the contact of the holding member 84 with respect to the rim portion 21a of the opening hole 21 is suppressed, and the holding member 84 can be smoothly inserted into the fuel tank 12, and the hook portion of the holding member 84 can be smoothly inserted. 93 can be protected. Incidentally, for example, when the holding member is a simple hook member, if the hook member is caught in the mouth edge 21a when passing through the opening hole 21 of the fuel tank 12, in the worst case, the hook member is damaged, and the lead wires 57, This causes a problem that 70 cannot be held. On the other hand, according to the holding member 84 of the present embodiment, such a problem can be solved.

  Further, when the guide portion 95 and the convex edge portion 105 come into contact with and slide on the mouth edge portion 21a of the opening hole 21 of the fuel tank 12, the holding member 84 is caught on the mouth edge portion 21a. Contact is suppressed. For this reason, the holding member 84 can be inserted into the fuel tank 12 more smoothly, and the holding member 84 can be effectively protected.

  Further, due to the abutment of the convex edge portion 105 and the guide portion 95 with respect to the rim portion 21a of the opening hole 21 of the fuel tank 12, the protective area E of the lead wires 57 and 70 between the holding member 84 and the rim portion 21a. (See FIG. 12) can be secured. Thereby, when the holding member 84 of the joint member 18 passes the opening hole 21 of the fuel tank 12, the lead wires 57 and 70 can be effectively protected.

  Thereafter, with the canister portion 30 of the flange unit 14 fitted into the opening hole 21, the flange unit 14 is assembled to the upper wall portion 20 of the fuel tank 12 so as to close the opening hole 21. In this state, the joint member 18 is urged to the lowest position with respect to the sub tank 43 by the elasticity of the spring 82, and the sub tank 43 is pressed onto the bottom wall portion 22 of the fuel tank 12. Thus, the assembly of the fuel supply device 10 to the fuel tank 12 is completed.

  According to the wiring holding structure in the fuel supply device 10 described above, the lead wires 57 and 70 that electrically connect the pump unit 16 and the electrical connector 28 in the fuel tank 12 are held in the holding groove of the holding member 84 of the joint member 18. 99 is held so as to be displaceable in the longitudinal direction of the holding groove 99. For this reason, the wobbling of the lead wires 57 and 70 due to the vibration of the vehicle or the vibration of the pump unit 16 is suppressed. Thereby, interference of the lead wires 57 and 70 with respect to other components is suppressed.

  Further, when the fuel tank 12 is deformed by the change in the tank internal pressure or the change in the fuel amount, and the relative positions of the flange unit 14 and the fuel pump 45 and the sender gauge 49 of the pump unit 16 are changed, the lead wire is changed accordingly. 57 and 70 are displaced in the longitudinal direction of the holding groove 99. Thereby, the deformation | transformation of the lead wires 57 and 70 is suppressed, and the load concerning the lead wires 57 and 70 can be suppressed. For this reason, damage and disconnection of the lead wires 57 and 70 can be suppressed.

  Further, since the introduction direction of the lead wires 57 and 70 in the wiring introduction path 101 is different from the longitudinal direction of the holding groove 99 which is the same direction as the depth direction of the fuel tank 12, wiring is performed from within the holding groove 99. The retrograde to the introduction path 101 is suppressed. Thereby, disconnection of the lead wires 57 and 70 can be effectively suppressed.

  In addition, the hook portion 93 of the holding groove 99 is disposed along one side (rear side) of the wiring introduction path 101, and the guide portion 95 is disposed along the other side (front side) of the wiring introduction path 101. A wiring introduction path 101 is formed by the hook portion 93 and the guide portion 95. Therefore, the lead wires 57 and 70 can be smoothly introduced into the holding groove 99 from the introduction port 101 a of the wiring introduction path 101.

  The lead wires 57 and 70 are introduced from the wiring introduction path 101 into the holding groove 99 by elastic deformation in the forward direction (rear direction) of the hook portion 93. Further, when the hook portion 93 is elastically deformed in the reverse direction (forward direction), the elastic deformation is regulated by the hook portion 93 coming into contact with the guide portion 95 (see a two-dot chain line B in FIG. 10). For this reason, it is possible to prevent the lead wires 57 and 70 from going backward from the holding groove 99 to the wiring introduction path 101.

  The lead wires 57 and 70 are held by the holding member 84 and the hook piece 37. Thereby, the horizontal deflection of the lead wires 57 and 70 can be suppressed, and the routing direction can be stabilized.

  Further, by providing the vertical rib portion 91a on the vertical wall portion 91 of the holding member 84, it is possible to move leftward while suppressing breakage of the lead wires 57 and 70, compared to the case where the vertical rib portion 91a is not provided. While being able to suppress, interference of the lead wires 57 and 70 with respect to the spring 82 and the rail part 76 of the flange unit 14 can be suppressed.

  Further, since the horizontal rib portion 87b is provided on the hanging wall portion 87a of the upper plate portion 87 of the holding member 84, the lead wires 57 and 70 are prevented from being damaged as compared with the case where the horizontal rib portion 87b is not provided. The movement to can be suppressed.

[Other Embodiments] The present invention is not limited to the embodiments and can be modified without departing from the present invention. For example, the present invention is not limited to a vehicle such as an automobile, and may be applied to a wiring structure in a fuel tank in another vehicle. Further, electric devices such as the fuel pump 45 and the sender gauge 49 may be arranged alone in the fuel tank 12. Further, the sender gauge 49 may be provided in a canister disposed in the fuel tank separately from the lid member. The electric device may be a control valve provided for venting the fuel tank in a vent module arranged in the fuel tank 12 separately from the lid member. In addition, the components provided in the units 14 and 16 of the fuel supply apparatus 10 may be appropriately increased or decreased or changed. Further, the joint member 18 may be fixed to the pump unit 16 side or the flange unit 14 side. Further, the holding member 84 may be provided in a member other than the joint member 18, for example, the canister unit 30, the sub tank 43, or the like. The number of holding members 84 may be plural. Further, the electric wiring held by the holding member 84 may be one or a plurality of wire harnesses in which a plurality of lead wires 57 and 70 are bundled. Further, the longitudinal direction of the holding groove 99 is not limited to the depth direction of the fuel tank 12.

DESCRIPTION OF SYMBOLS 10 Fuel supply apparatus 12 Fuel tank 14 Flange unit (lid member)
16 Pump unit (fuel pump module)
18 Joint member 21 Open hole 28 Electrical connector 45 Fuel pump (electrical equipment)
49 Sender gauge (electric equipment)
57 Lead wire (electrical wiring)
70 Lead wire (electrical wiring)
84 Holding member 93 Hook part (flexible part, one groove wall part of holding groove)
95 Guide part (guide member)
97 groove opening 99 holding groove 101 wiring introduction path 101a introduction port 105 convex edge (auxiliary guide member)

Claims (6)

Electrical equipment disposed in the fuel tank;
A lid member having an electrical connector that closes the opening of the fuel tank and is electrically connected to the outside;
Electrical wiring for electrically connecting the electrical device and the electrical connector;
A wiring holding structure comprising:
A wiring holding structure comprising a holding member having a holding groove provided with a longitudinal direction for holding the electric wiring in a displaceable manner. The wiring holding structure according to claim 1,
The holding member has a wiring introduction path having one end communicating with the groove opening of the holding groove and the other end opened as an introduction port;
The longitudinal direction of the holding groove is the same direction as the depth direction of the fuel tank,
The wiring holding structure, wherein the wiring introduction path is formed so that an introduction direction of the electric wiring is different from a longitudinal direction of the holding groove. The wiring holding structure according to claim 1 or 2,
The holding member includes a guide member that includes a guide member that can contact and slide with respect to a rim portion of the opening hole when passing through the opening hole of the fuel tank. The wiring holding structure according to claim 3,
One groove wall portion of the holding groove is disposed along one side of the wiring introduction path,
The guide member is disposed along the other side of the wiring introduction path,
A wiring holding structure in which the wiring introduction path is formed by one groove wall portion of the holding groove and the guide member. The wiring holding structure according to claim 3 or 4,
The holding member includes an elastically deformable bending portion that opens and closes a groove opening of the holding groove;
Due to the elastic deformation in the positive direction of the bending portion, the electrical wiring can be introduced into the holding groove,
The wiring holding structure in which the elastic deformation can be regulated by contacting the guide member during elastic deformation in the reverse direction. The wiring holding structure according to any one of claims 3 to 5,
A joint member is provided for connecting the electrical device side and the lid member side;
The joint member includes an auxiliary guide member that can contact and slide with respect to a rim portion of the opening hole when passing through the opening hole of the fuel tank,
The auxiliary guide member is arranged so that the holding member does not come into contact with the edge portion when the auxiliary guide member and the guide member are in contact with and slide with respect to the edge portion of the opening hole at two points. Wiring holding structure.

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