Wiring retention construction

Abstract

To suppress the catch of an electric wiring on the other member while suppressing the biting of the electric wiring between a fuel tank and a lid member when a fuel supply device is shrunk during mounting the lid member to the fuel tank.SOLUTION: A fuel supply device 18 includes a flange unit 20 having electric connectors 24, 25, a joint member 63 provided on a pump unit 40 and connected to the flange unit 20 movably in the vertical direction, and lead wires 71, 72 for electrically connecting a fuel pump 57 and a center gauge 60 of the pump unit 40 to the electric connectors 24, 25, respectively, the joint member 63 being provided with a wiring holding part S including a base 80 having a vertical surface 80a and forming a wiring holding space 90 on the vertical surface 80a side to hold the electric wiring, and the base 80 being formed with a guide slope 80b having an obtuse angle to the vertical surface 80a.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a wiring holding structure, and more particularly to a wiring holding structure in a fuel supply device. [Background technology]

[0002] The wiring holding structure described in Patent Document 1 includes a wiring holding member that holds electrical wiring that electrically connects electrical equipment in a fuel tank to an electrical connector on a lid member so that the electrical wiring extends horizontally and is movable up and down. The wiring holding member is provided on the electrical equipment side and is attached to a joint portion that is connected to the lid member so as to be movable up and down. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-71367 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the wiring retention structure described in Patent Document 1, the electrical wiring is held with some slack in a horizontally extending state. Therefore, when the fuel supply device contracts to attach the lid member to the fuel tank after inserting the electrical equipment into the fuel tank, the slack portion of the electrical wiring is likely to protrude outside the projected range of the opening in the fuel tank. Therefore, there is a risk that the slack portion of the electrical wiring may become caught between the fuel tank (specifically, the rim of the opening) and the lid member.

[0005] In addition, in order to prevent the electrical wiring from getting caught between the fuel tank and the lid, it is conceivable to hold the electrical wiring with some slack in a state where it extends horizontally. In this case, when the fuel supply device contracts to attach the lid to the fuel tank, it is predicted that the slack portion of the electrical wiring will get caught on other components and, in severe cases, bend.

[0006] The problem that the technology disclosed in this specification aims to solve is to prevent the electrical wiring from getting caught between the fuel tank and the lid member when the fuel supply device contracts when attaching the lid member to the fuel tank, while also preventing the electrical wiring from getting caught on other components. [Means for solving the problem]

[0007] In order to solve the above problems, the technology disclosed in this specification takes the following measures.

[0008] The first means is a wiring holding structure for holding the electrical wiring in a fuel supply device that includes a lid member that closes an opening in a fuel tank and has an electrical connector that is electrically connected to the outside, a joint portion that is provided on the side of electrical equipment placed in the fuel tank and is connected to the lid member so that it can move in an up and down direction, and electrical wiring that electrically connects the electrical connector to the electrical equipment on the electrical equipment side, wherein the joint portion includes a base portion that has a vertical surface facing the electrical wiring side, and a wiring holding portion is provided on the vertical surface side that forms a horizontal and hollow wiring holding space that holds the electrical wiring movably in axial and radial directions, and the base portion is formed with a guide slope that extends from the upper end of the vertical surface in a direction opposite to the electrical wiring side and forms an obtuse angle with the vertical surface.

[0009] According to the first aspect, the electrical wiring that electrically connects the electrical device on the electrical device side to the electrical connector of the lid member is held in the wiring holding space of the wiring holder provided at the joint of the fuel supply device so as to extend in the vertical direction and be movable in the axial and radial directions. This prevents the electrical wiring from protruding outside the projected range of the opening of the fuel tank when the fuel supply device contracts when the lid member is attached to the fuel tank, and prevents the electrical wiring from becoming caught between the fuel tank and the lid member.

[0010] The base of the wire holder is formed with a guide slope that extends from the upper end of the vertical surface in a direction opposite to the electrical wire side and forms an obtuse angle with the vertical surface. This allows the electrical wire to slide downward along the guide slope of the base when the fuel supply device contracts to attach the lid member to the fuel tank, thereby preventing the electrical wire from getting caught on other components, i.e., the base.

[0011] The second means is the wire holding structure of the first means, in which the wire holding portion is provided so that its position can be adjusted relative to the joint portion.

[0012] According to the second aspect, the wiring holder is provided on the joint part so that its position can be adjusted. This allows the position of the wiring holder to be adjusted according to the wiring configuration of the electrical wiring. Therefore, the joint part and the wiring holder can be made common.

[0013] The third means is the wiring holding structure of the first means, in which the wiring holding portion is provided detachably with respect to the joint portion.

[0014] According to the third aspect, the wiring holder is detachable from the joint, which allows wiring holders of different shapes, sizes, etc. to be selected and attached to the joint, thereby enabling the joint to be standardized. [Effects of the Invention]

[0015] According to the technology disclosed in this specification, it is possible to prevent the electrical wiring from getting caught between the fuel tank and the lid member when the fuel supply device contracts when attaching the lid member to the fuel tank, while also preventing the electrical wiring from getting caught on other components. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view showing a fuel supply device according to an embodiment; [Figure 2]FIG. 2 is a front view showing the fuel supply device. [Figure 3] FIG. [Figure 4] FIG. 2 is a left side view showing the fuel supply device. [Figure 5] FIG. 2 is a right side view showing the fuel supply device. [Figure 6] FIG. 2 is a perspective view showing a wiring holding structure. [Figure 7] FIG. 2 is a plan view showing a wiring holding structure. [Figure 8] FIG. 2 is a right side view showing the wiring holding structure. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment for implementing the technology disclosed in this specification will be described below with reference to the drawings. The wiring holding structure according to this embodiment is applied to a fuel supply device that supplies fuel from a fuel tank mounted on a vehicle such as an automobile equipped with an engine to the engine. FIG. 1 is a perspective view of the fuel supply device, FIG. 2 is a front view, FIG. 3 is a rear view, FIG. 4 is a left side view, and FIG. 5 is a right side view. The directions in the figures indicate the front-rear, left-right, top-bottom directions of the fuel supply device. The top-bottom directions correspond to the direction of gravity when the fuel supply device is mounted on the fuel tank of the vehicle, that is, the vertical direction. Furthermore, the front-rear, left-right, and top-bottom directions are not specified.

[0018] (Fuel tank) As shown in FIG. 2, the fuel tank 10 is formed in the shape of a hollow container. The fuel tank 10 has an upper wall portion 11 and a bottom wall portion 12. A circular opening 13 is formed in the upper wall portion 11. The fuel tank 10 is mounted on a vehicle with the upper wall portion 11 and the bottom wall portion 12 in a horizontal position. Gasoline, for example, as a liquid fuel, is stored inside the fuel tank 10. The fuel tank 10 is made of resin. The fuel tank 10 deforms (mainly expands and contracts in the vertical direction) due to changes in the internal tank pressure and the amount of fuel. This changes the relative position, i.e., the distance, between the upper wall portion 11 and the bottom wall portion 12.

[0019] (Fuel supply device) 1, the fuel supply device 18 includes a flange unit 20, a pump unit 40, and a joint member 63. The joint member 63 is connected to the flange unit 20 so as to be movable in the up-down direction, and is connected to the pump unit 40 so as to be rotatable in the up-down direction.

[0020] (Flange unit 20) The flange unit 20 has a disk-shaped flange body 21. As shown in Figure 2, the flange body 21 is attached to the upper wall portion 11 of the fuel tank 10 so as to close the opening 13. The flange unit 20 is made of resin. An annular seal member 22 is attached to the lower surface of the outer periphery of the flange body 21, providing an elastic seal between the flange body 21 and the upper wall portion 11.

[0021] As shown in Fig. 1, the flange main body 21 is provided with a fuel discharge port 23, a first electrical connector 24, and a second electrical connector 25. The fuel discharge port 23 is located at the left end of the flange main body 21. The two electrical connectors 24, 25 are arranged side by side on the left and right sides in the front part of the flange main body 21. On the underside of the flange main body 21, a pen-clip-shaped upper wiring clip 27 is formed on the left side of the first electrical connector 24 (see Fig. 2).

[0022] A hollow container-like canister portion 30 is formed at the rear of the flange main body 21. The canister portion 30 has a generally semi-cylindrical outer shape that is concentric with the flange main body 21. An adsorbent (e.g., activated carbon) that can adsorb and desorb evaporated fuel generated in the fuel tank 10 is stored inside the canister portion 30. An evaporative port 31, an atmospheric port 32, and a purge port 33 that communicate with the inside of the canister portion 30 are formed on the upper surface side of the canister portion 30.

[0023] A pair of left and right fixed rails 35 extending linearly in the vertical direction are formed on the front side of the canister part 30 (see Figures 4 and 5). The two fixed rails 35 are formed symmetrically. The flange unit 20 corresponds to the "lid member" referred to in this specification.

[0024] (Pump unit 40) As shown in FIG. 2, the pump unit 40 includes a sub-tank 42 , a fuel pump 57 and a sender gauge 60 .

[0025] (Subtank 42) The subtank 42 has a subtank body 43, a cover member 44, a fuel filter 46, a pump case 50, a regulator case 52, and a pressure regulator 55. The subtank body 43 is formed in the shape of an inverted shallow box that is open at the bottom. The subtank body 43 is formed in the shape of an oblong rectangle that is longer in the left-right direction in a plan view. An engagement shaft 43a is formed in a position toward the left of the center of the lower rear surface of the subtank body 43 (to the right in Figure 3). The subtank body 43 is made of resin.

[0026] The cover member 44 is formed in the shape of a rectangular lattice plate with many openings. The cover member 44 is made of resin. The cover member 44 is connected to the subtank body 43 by snap fitting so as to cover the opening on the bottom surface of the subtank body 43. Many protrusions 44a are formed in a dispersed manner on the bottom surface of the cover member 44.

[0027] The fuel filter 46 is formed into a hollow bag shape using a filtering material made of nonwoven fabric. The fuel filter 46 is housed in the internal space formed between the subtank body 43 and the cover member 44. The outer peripheral edge of the fuel filter 46 is sandwiched between the subtank body 43 and the cover member 44.

[0028] The pump case 50 is formed in a hollow cylindrical shape extending in the left-right direction. The pump case 50 is provided on the sub-tank body 43. An intake pipe 46a of the fuel filter 46 is connected to the right end of the pump case 50. The pump case 50 is made of resin.

[0029] The regulator case 52 is formed in a hollow cylindrical shape. The regulator case 52 is connected to the left end of the pump case 50. A fuel discharge portion 52a is formed at one end of the regulator case 52. A discharge pipe portion 52b is formed at the other end of the regulator case 52 (see FIG. 5). A pen clip-shaped lower wiring clip 53 is formed on the side portion of the regulator case 52 facing the right front (see FIG. 1). The regulator case 52 is made of resin.

[0030] The pressure regulator 55 is housed in the regulator case 52. The pressure regulator 55 adjusts the pressure of the pressurized fuel discharged from the fuel pump 57, i.e., the fuel supplied to the engine, to a predetermined pressure. The fuel adjusted by the pressure regulator 55 is discharged from a fuel discharge portion 52a of the regulator case 52. In addition, surplus fuel in the pressure regulator 55 is discharged into the sub-tank 42 from a discharge pipe portion 52b of the regulator case 52.

[0031] (Fuel Pump 57) The fuel pump 57 is an electric fuel pump including a motor section and a pump section. The fuel pump 57 has a generally cylindrical outer shape. The fuel pump 57 is housed in the pump case 50 with the motor section facing left and the pump section facing right. The fuel intake port of the fuel pump 57 is connected to the intake pipe 46a of the fuel filter 46 via the pump case 50. The fuel discharge port of the fuel pump 57 is connected to the pressure regulator 55 via the pump case 50 and the regulator case 52. An electrical connector section 58 is provided on the front side of one end (left end) of the fuel pump 57, enabling power to be supplied to the motor section. The fuel pump 57 corresponds to the "electrical equipment" as defined in this specification.

[0032] (Sender Gauge 60) The sender gauge 60 is a level gauge that detects the remaining amount of fuel in the fuel tank 10, i.e., the liquid level. The sender gauge 60 has an arm 60a and a float 60b. The sender gauge 60 is provided at the right end of the subtank body 43. An electrical connector section 61 having a power terminal, a ground terminal, and an output terminal is provided at the rear side of the sender gauge 60 (see FIG. 1). The sender gauge 60 corresponds to the "electrical equipment" as defined in this specification. Furthermore, the pump unit 40 having the fuel pump 57 and the sender gauge 60 corresponds to the "electrical equipment side" as defined in this specification.

[0033] (Joint member 63) As shown in Figures 4 and 5, the joint member 63 has a joint main body 64 and a joint sub-body 66. The joint main body 64 is formed in the shape of a vertically long strip that is flat in the front-rear direction and extends in the up-down direction. A pair of left and right movable side rails 65 are formed on the rear side of the joint main body 64. Both movable side rails 65 extend linearly in the up-down direction. Both movable side rails 65 are formed symmetrically.

[0034] The secondary joint body 66 is formed in the shape of a vertically long strip that is flat in the front-to-rear direction and extends in the up-down direction. The secondary joint body 66 has a vertical length that is shorter than the vertical length of the main joint body 64. The secondary joint body 66 is joined so as to overlap the front side of the main joint body 64. The upper part of the front of the main joint body 64 is exposed from the secondary joint body 66. The main joint body 64 and the secondary joint body 66 are made of resin. The joint member 63 corresponds to the "joint portion" referred to in this specification.

[0035] (Connection between flange unit 20 and joint member 63) 4 and 5, both movable rails 65 of the joint member 63 are engaged with both fixed rails 35 of the flange unit 20 so as to be movable in the vertical direction. In other words, the flange unit 20 and the joint member 63 are connected so as to be movable in the vertical direction. A coil spring 67 is interposed between the flange unit 20 and the joint main body 64, which biases the flange unit 20 and the joint member 63 in the direction separating them. Although not shown, a movement amount limiting means is provided between the flange unit 20 and the joint member 63, which limits the relative movement amount between them within a predetermined range.

[0036] (Connection between pump unit 40 and joint member 63) As shown in Fig. 3, the joint sub-body 66 of the joint member 63 is connected to the engagement shaft 43a of the sub-tank 42 of the pump unit 40 so as to be rotatable in the vertical direction (see the directions of arrows Y1 and Y2 in Fig. 3). In Fig. 3, the joint sub-body 66 is located on the back side of the page of the joint main body 64. Although not shown, a rotation amount limiting means is provided between the pump unit 40 and the joint member 63 to limit the relative rotation amount between them within a predetermined range.

[0037] (Piping between flange unit 20 and pump unit 40) As shown in FIG. 1, fuel discharge port 23 of flange unit 20 and fuel discharge portion 52a of regulator case 52 of pump unit 40 are connected via a fuel discharge pipe 69 made of a flexible hose.

[0038] (Wiring between flange unit 20 and fuel pump 57) 1, the flange unit 20 and the fuel pump 57 are electrically connected via four first lead wires 71. An upper connector portion 71a on one side (upper side) of the first lead wires 71 is connected to the first electrical connector 24 of the flange unit 20. A lower connector portion 71b on the other side (lower side) of the first lead wires 71 is connected to the electrical connector portion 58 of the fuel pump 57. The first lead wires 71 are electrical wiring for supplying drive power to the fuel pump 57. The first lead wires 71 correspond to the "electrical wiring" as defined in this specification.

[0039] (Wiring between flange unit 20 and sender gauge 60) The flange unit 20 and the sender gauge 60 are electrically connected via three second lead wires 72. An upper connector portion 72a on one side (upper side) of the second lead wires 72 is connected to the second electrical connector 25 of the flange unit 20. A lower connector portion 72b on the other side (lower side) of the second lead wires 72 is connected to the electrical connector portion 61 of the sender gauge 60. The second lead wires 72 have a thinner diameter than the first lead wires 71. The second lead wires 72 are electrical wiring for transmitting a detection signal from the sender gauge 60. The second lead wires 72 correspond to the "electrical wiring" as defined in this specification.

[0040] (Positioning of both lead wires 71 and 72) The upper ends of both lead wires 71, 72 are hooked onto and positioned in the upper wiring clip 27 of the flange unit 20. The lower end of the first lead wire 71 is hooked onto and positioned in the lower wiring clip 53 of the regulator case 52. The lower part of the second lead wire 72 is pulled out to the left from the lower connector portion 72b and hooked onto and positioned in the lower wiring clip 53 of the regulator case 52. Between the upper wiring clip 27 and the lower wiring clip 53, the lead wires 71, 72 are ensured to have lengths that take into account the maximum vertical movement and maximum vertical rotation of the pump unit 40 relative to the flange unit 20. Therefore, the lead wires 71, 72 are wired with Ω-shaped slack in a plan view when the fuel supply device 18 is installed on the fuel tank 10 (see FIG. 2). A wiring holding structure for holding the lead wires 71, 72 between the wiring clips 27, 53 will be described later.

[0041] (Installation of fuel supply device 18) Fuel supply device 18 is extended when installed in fuel tank 10. In this extended state, joint member 63 is suspended from flange unit 20, and pump unit 40 is suspended from joint member 63. That is, joint member 63 is lowered to the lowest position relative to flange unit 20, and pump unit 40 is rotated to an inclined position downward to the right relative to joint member 63 (see two-dot chain line 40 in FIG. 3 ).

[0042] Next, with fuel supply device 18 in the extended state, pump unit 40 is inserted into opening 13 of fuel tank 10. After the lower end of pump unit 40 abuts against bottom wall 12 of fuel tank 10, pump unit 40 is rotated relative to joint member 63 in the opposite direction to when it was suspended, so that it is placed horizontally on bottom wall 12 of fuel tank 10 (see FIG. 2).

[0043] Next, the flange unit 20 is pushed down against the biasing force of the coil spring 67, thereby fitting the canister portion 30 into the opening 13 of the fuel tank 10. In this state, the outer periphery of the flange main body 21 is fixed to the upper wall portion 11 of the fuel tank 10 via fixing means (not shown), such as fixing brackets or bolts. In this manner, installation of the fuel supply device 18 on the fuel tank 10 is completed (see FIG. 2).

[0044] When the fuel supply device 18 is installed, the pump unit 40 is held pressed against the bottom wall 12 of the fuel tank 10 by the biasing force of the coil spring 67. Although not shown, a fuel supply pipe leading to the engine is connected to the fuel discharge port 23 of the flange unit 20. External connectors are connected to the vehicle's battery and control circuit, respectively, to the first electrical connector 24 and the second electrical connector 25. An evaporated fuel passage leading to the breather pipe of the fuel tank 10 is connected to the evaporative port 31. The atmospheric port 32 is open to the atmosphere. A purge passage leading to the engine's intake passage is connected to the purge port 33.

[0045] (Operation of fuel supply device 18) When the fuel pump 57 is driven by external driving power, fuel that has flowed from the fuel tank 10 into the sub-tank 42 is drawn into the fuel pump 57 via the fuel filter 46 and pressurized. The pressure of the pressurized fuel discharged from the fuel pump 57 is adjusted by the pressure regulator 55. The pressure-adjusted pressurized fuel flows through the discharge fuel pipe 69 to the fuel discharge port 23 of the flange unit 20, and is supplied from the fuel discharge port 23 to the engine via the fuel supply pipe. In addition, any excess fuel due to the pressure adjustment by the pressure regulator 55 is discharged into the sub-tank 42 from the discharge pipe portion 52b of the regulator case 52.

[0046] Furthermore, evaporated fuel generated in the fuel tank 10 is introduced from the evaporated fuel passage through the evaporative port 31 into the canister portion 30 and adsorbed therein. The evaporated fuel adsorbed in the canister portion 30 is desorbed by the intake negative pressure and purged from the purge port 33 into the intake passage through the purge passage. When the evaporated fuel is desorbed from the canister portion 30, air is introduced into the canister portion 30.

[0047] Incidentally, the fuel tank 10 deforms, i.e., expands and contracts, due to changes in the internal tank pressure caused by changes in temperature, the amount of fuel, etc. Accordingly, the height of the fuel tank 10 changes (increases or decreases). In this case, the flange unit 20 and the joint member 63 move relatively up and down, so that the fuel supply device 18 follows the change in height of the fuel tank 10.

[0048] (Problem occurring when the fuel supply device 18 is contracted when the flange unit 20 is attached after the pump unit 40 is inserted into the fuel tank 10) As described above, the lead wires 71, 72 are routed with slack between the wiring clips 27, 53. For this reason, if the following wiring retention structure is not provided, it is expected that the slack portions of the lead wires 71, 72 will protrude outside the projected range of the opening 13 of the fuel tank 10 when the fuel supply device 18 is contracted to attach the flange unit 20 to the fuel tank 10. This could cause the protruding portions to become caught between the fuel tank 10 and the flange unit 20. In order to prevent the slack portions of the lead wires 71, 72 from becoming caught in this way, the following wiring retention structure is provided.

[0049] (Wiring retention structure for both lead wires 71 and 72) As shown in Fig. 1, the wire retention structure includes a wire retention portion S that holds both lead wires 71, 72 movably in the axial and radial directions. The wire retention portion S is disposed on the upper front surface of the main joint body 64 of the joint member 63. The wire retention portion S includes a base 80 having a vertical surface 80a facing both lead wires 71, 72, and defines a wire retention space 90 on the vertical surface 80a side. The base 80 may be formed integrally with the main joint body 64, or may be attached to the main joint body 64. Fig. 6 is a perspective view of the wire retention structure, Fig. 7 is a plan view, and Fig. 8 is a right side view of the same.

[0050] 6, the base 80 is formed in the shape of a horizontally long strip extending in the left-right direction of the joint main body 64. A first hook 81 and a second hook 85 are provided on a vertical surface 80a of the base 80. The base 80, the first hook 81, and the second hook 85 form a horizontal, hollow wiring holding space 90.

[0051] As shown in Fig. 7, the wiring holding space 90 is formed in a horizontally elongated rectangular shape in a plan view. The first hook 81 is formed in an L-shaped hook shape with a vertically elongated rectangular cross section. The first hook 81 has a protruding piece-like first base portion 82 that protrudes forward from the vertical surface 80a of the base portion 80, and a strip-like flexible portion 83 that bends in an L shape to the left from the tip of the first base portion 82. The first base portion 82 is located in the center of the base portion 80 in the left-right direction. The flexible portion 83 is formed to be flexible and deformable in the front-rear direction (see the two-dot chain line 83 in Fig. 7).

[0052] The second hook 85 is formed in an L-shaped hook shape with a horizontally elongated rectangular cross section. The second hook 85 has a second base portion 86 in the form of a protruding piece that protrudes forward from the vertical surface 80a of the base portion 80, and a stopper portion 87 that bends in an L-shape to the right from the tip of the second base portion 86. The second base portion 86 is located at the left end of the base portion 80.

[0053] The flexible portion 83 and the stopper portion 87 are offset from each other in the front-rear direction. That is, the front surface of the flexible portion 83 and the front surface of the stopper portion 87 are offset from each other by an offset amount X so that the stopper portion 87 is disposed in front of the flexible portion 83.

[0054] A first inclined surface 83a that inclines rearward from the front surface toward the front (left) in a plan view is formed at the tip of the flexible portion 83. Also, a second inclined surface 87a is formed on the inner surface (rear surface) of the stopper portion 87, facing parallel to the first inclined surface 83a of the flexible portion 83 with a small gap therebetween.

[0055] 8, the base 80 is formed with a guide slope 80b that extends from the upper end of the vertical surface 80a in a direction opposite to the lead wires 71 and 72, i.e., backward, and forms an obtuse angle θ with the vertical surface 80a. The obtuse angle θ is, for example, 120°.

[0056] (Holds both lead wires 71 and 72) This operation is performed after wiring the lead wires 71, 72 to the fuel supply device 18. The lead wires 71, 72 are held by the wire holding portion S provided on the joint member 63. More specifically, the worker presses the lead wires 71, 72 against the bending portion 83 of the first hook 81, thereby bending the bending portion 83 rearward (see the two-dot chain line 83 in FIG. 7). This widens the gap between the first inclined surface 83a of the bending portion 83 and the second inclined surface 87a of the stopper portion 87, and the lead wires 71, 72 are inserted into the wire holding space 90 through the widened opening. After the lead wires 71, 72 are inserted into the wire holding space 90, the bending portion 83 elastically returns to its original shape, completing the holding operation of the lead wires 71, 72 (see FIGS. 6 and 8).

[0057] As a result, both lead wires 71, 72 are held axially and radially movably in the wire holding space 90. Therefore, both lead wires 71, 72 move appropriately within the wire holding space 90 in response to expansion and contraction of the joint member 63 relative to the flange unit 20 of the fuel supply device 18 and rotation of the pump unit 40 relative to the joint member 63.

[0058] Furthermore, when the lead wires 71, 72 are inserted into the wiring holding space 90, the stopper portion 87 of the second hook 85 restricts the flexible portion 83 of the first hook 81 from bending and deforming outward from the wiring holding space 90, thereby preventing the lead wires 71, 72 held in the wiring holding space 90 from coming loose. Furthermore, when the lead wires 71, 72 are inserted into the wiring holding space 90 (when the flexible portion 83 is bent), the first inclined surface 83a of the flexible portion 83 and the second inclined surface 87a of the stopper portion 87 act as guides for the lead wires 71, 72, improving the ease of inserting the lead wires 71, 72 into the wiring holding space 90.

[0059] Advantages of One Embodiment According to the wiring retention structure, both lead wires 71, 72 are retained in wiring retention space 90 of wiring retention portion S provided on joint member 63 of fuel supply device 18 so as to be movable in the axial and radial directions while extending in the vertical direction. Therefore, when fuel supply device 18 is contracted when flange unit 20 is attached to fuel tank 10, both lead wires 71, 72 are prevented from protruding outside the projected range of opening 13 of fuel tank 10, and both lead wires 71, 72 are prevented from becoming caught between fuel tank 10 and flange unit 20.

[0060] Furthermore, a guide slope 80b is formed on base 80 of wire holding portion S, extending from the upper end of vertical surface 80a in a direction opposite (rearward) from both lead wires 71, 72 and forming an obtuse angle with vertical surface 80a. As a result, when fuel supply device 18 is contracted when mounting flange unit 20 to fuel tank 10, slack portions of both lead wires 71, 72 are slidably guided downward by guide slope 80b of base 80, thereby preventing both lead wires 71, 72 from getting caught on other members, i.e., base 80, and from bending due to the catch.

[0061] (Modification of the embodiment) The wiring holding portion S may be provided so that its position can be adjusted in the left-right and / or up-down directions relative to the joint member 63 (in this embodiment, the main joint body 64) by operating an adjustment screw or the like. This makes it possible to adjust the position of the wiring holding portion S according to the wiring configuration of both lead wires 71, 72. Therefore, the joint member 63 and the wiring holding portion S can be made common.

[0062] Furthermore, the wiring holder S may be provided detachably with respect to the joint member 63 (in the embodiment, the main joint body 64) using fastening members such as bolts and nuts. This makes it possible to select and attach wiring holders S with different shapes, sizes, etc. to the main joint body 64. Therefore, the main joint body 64 can be standardized.

[0063] [Other embodiments] The technology disclosed in this specification is not limited to the above-described embodiment, and can be implemented in various other forms. For example, at least the secondary joint body 66 of the main joint body 64 and secondary joint body 66 of the joint member 63 may be fixed to the subtank body 43. The main joint body 64 and secondary joint body 66 may be formed by integral molding. The first hook and second hook of the wiring holder S may be arranged in reverse left and right. [Explanation of symbols]

[0064] 10. Fuel Tank 13 Opening hole 18 Fuel supply system 20 Flange unit (lid member) 24 First electrical connector 25 Second electrical connector 40 Pump unit (electrical equipment side) 57 Fuel pump (electrical equipment) 60 Senda Gauge (Electrical Equipment) 63 Joint material (joint part) 64 Joint Main 71 First lead wire (electrical wiring) 72 Second lead wire (electrical wiring) 80 base 80a vertical plane 80b Guide slope 90 Wiring holding space S Wiring holding part

Claims

1. a cover member that closes an opening of the fuel tank and has an electrical connector that is electrically connected to the outside; a joint portion provided on an electrical device disposed inside the fuel tank and connected to the lid member so as to be movable in the up and down direction; an electrical wiring that electrically connects the electrical connector to an electrical device on the electrical device side; In a fuel supply device comprising: A wiring holding structure for holding the electrical wiring, the joint portion includes a base portion having a vertical surface facing the electrical wiring, and is provided with a wiring holding portion extending horizontally along the vertical surface and configured as a horizontally elongated rectangular frame in a plan view, the wiring holding portion forming a hollow wiring holding space within the frame that holds the electrical wiring movably in the vertical and horizontal directions while extending the electrical wiring in the vertical direction; The base portion has a guide slope formed thereon that extends from an upper end of the vertical surface in a direction opposite to the electrical wiring side and forms an obtuse angle with the vertical surface.

2. The wiring holding structure according to claim 1, The wiring holding structure, wherein the wiring holding portion is provided so that its position can be adjusted relative to the joint portion.

3. The wiring holding structure according to claim 1, The wiring holding structure, wherein the wiring holding portion is provided detachably with respect to the joint portion.

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