JP7815087B2 - Wire holding structure - Google Patents

Description

The technology disclosed in this specification relates to a wiring holding structure. More specifically, it relates to a wiring holding structure in a fuel supply system.

The wiring retention structure described in Patent Document 1 includes a wiring retention member with a retention groove that holds the electrical wiring that electrically connects the electrical device on the electrical device side to the electrical connector on the cover member while extending horizontally and allowing it to move up and down. The wiring retention member is attached to a joint member that is attached to the electrical device side and connected to the cover member so that it can move up and down.

Japanese Patent Application Laid-Open No. 2018-71367

The wiring retention structure described in Patent Document 1 holds the electrical wiring with some slack in a horizontally extending state. Therefore, when the fuel supply device contracts to attach the lid 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 fuel tank opening. This creates a risk of the slack portion of the electrical wiring becoming caught between the fuel tank (more specifically, the lip of the opening) and the lid.

The problem that the technology disclosed in this specification aims to solve is to prevent electrical wiring from becoming caught between the fuel tank and the lid member when the fuel supply device contracts when attaching the lid member to the fuel tank.

To solve the above problems, the technology disclosed in this specification takes the following measures:

The first means is a wiring retention structure for 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 inside the fuel tank and is connected to the lid member so that it can move up and down, and electrical wiring that electrically connects the electrical connector to the electrical equipment on the electrical equipment side, wherein the joint portion is provided with first and second hooks that form a horizontal, hollow wiring retention space that holds the electrical wiring movably in the axial and radial directions, the first hook has a flexible portion that can bend and deform inwardly into the wiring retention space, and the second hook has a stopper portion that restricts the flexible portion from bending and deforming outwardly from the wiring retention space.

According to the first method, the electrical wiring that electrically connects the electrical equipment on the electrical equipment side to the electrical connector on the lid member is held in a wiring holding space formed by the first and second hooks provided at the joint of the fuel supply device, extending vertically and movable axially and radially. This prevents the electrical wiring from protruding outside the projected range of the fuel tank opening when the fuel supply device contracts when attaching the lid member to the fuel tank, and prevents the electrical wiring from becoming caught between the fuel tank and the lid member.

The flexible portion of the first hook is also formed to be able to flex inward into the wiring retention space. Therefore, by utilizing the flexible deformation of the flexible portion of the first hook, the space between the flexible portion and the stopper portion of the second hook can be widened, allowing electrical wiring to be easily inserted into the wiring retention space through the widened opening. Furthermore, the stopper portion of the second hook restricts the flexible deformation of the flexible portion of the first hook outward from the wiring retention space, preventing the electrical wiring held in the wiring retention space from coming loose. This improves the ease with which electrical wiring can be inserted into the wiring retention space while preventing the electrical wiring from coming loose from the wiring retention space.

The second means is the wiring holding structure of the first means, in which the flexible portion and the stopper portion are offset from each other.

The second method allows the flexible portion to deflect inwardly within the wiring retention space by offsetting the stopper portion from the flexible portion, while restricting the flexible portion from deflecting outwardly within the wiring retention space.

The third means is a wiring holding structure according to the first or second means, in which the flexible portion and the stopper portion have inclined surfaces that face each other and are parallel to each other.

According to the third method, the flexible portion and the stopper portion have inclined surfaces that face each other parallel to one another, allowing the flexible portion to bend inward into the wiring retention space while restricting the flexible portion from beingnd outward from the wiring retention space. Furthermore, when inserting electrical wiring into the wiring retention space, the inclined surfaces of the flexible portion and the stopper portion act as guides for the electrical wiring. This improves the ease of inserting electrical wiring into the wiring retention space.

The technology disclosed in this specification makes it possible to prevent electrical wiring from becoming caught between the fuel tank and the lid member when the fuel supply device contracts when attaching the lid member to the fuel tank.

1 is a perspective view showing a fuel supply device according to a first embodiment. FIG. FIG. 2 is a front view showing the fuel supply device. FIG. FIG. 2 is a left side view showing the fuel supply device. FIG. 2 is a right side view showing the fuel supply device. FIG. 2 is a perspective view showing a wiring holding structure. FIG. 2 is a plan view showing a wiring holding structure. FIG. 10 is a perspective view showing a wiring holding structure according to a second embodiment. FIG. 2 is a plan view showing a wiring holding structure.

Below, embodiments for implementing the technology disclosed in this specification are described using the drawings.

[Embodiment 1]
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, i.e., the top-bottom direction. Furthermore, the front-rear, left-right directions are not specified.

(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 11 and a bottom wall 12. A circular opening 13 is formed in the upper wall 11. The fuel tank 10 is mounted on a vehicle with the upper wall 11 and the bottom wall 12 horizontal. Gasoline, for example, as a liquid fuel, is stored in the fuel tank 10. The fuel tank 10 is made of resin. The fuel tank 10 deforms (mainly expands and contracts vertically) due to changes in the tank internal pressure and the amount of fuel. This changes the relative position, i.e., the distance, between the upper wall 11 and the bottom wall 12.

(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.

(Flange unit 20)
The flange unit 20 has a disk-shaped flange main body 21. As shown in Figure 2, the flange main 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 main body 21, providing an elastic seal between the flange main body 21 and the upper wall portion 11.

As shown in FIG. 1, the flange 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 body 21. The two electrical connectors 24, 25 are arranged side-by-side on the left and right sides of the front of the flange body 21. On the underside of the flange 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).

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

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

(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 .

(Subtank 42)
The subtank 42 includes 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 with an open bottom. The subtank body 43 is formed in the shape of an oblong rectangle with its length 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.

The cover member 44 is formed in the shape of a rectangular lattice plate with numerous openings. The cover member 44 is made of resin. The cover member 44 is attached to the subtank body 43 by snap fitting so as to cover the opening on the underside of the subtank body 43. Numerous protrusions 44a are formed in a dispersed pattern on the underside of the cover member 44.

The fuel filter 46 is formed into a hollow bag using a nonwoven fabric filter material. 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.

The pump case 50 is formed in a hollow cylindrical shape extending in the left-right direction. The pump case 50 is mounted on the sub-tank body 43. The suction 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.

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 Figure 5). A pen-clip-shaped lower wiring clip 53 is formed on the side portion of the regulator case 52 facing the front right (see Figure 1). The regulator case 52 is made of resin.

The pressure regulator 55 is housed within 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 the fuel discharge portion 52a of the regulator case 52. In addition, excess fuel in the pressure regulator 55 is discharged into the sub-tank 42 from the discharge pipe portion 52b of the regulator case 52.

(Fuel pump 57)
The fuel pump 57 is an electric fuel pump including a motor and a pump. The fuel pump 57 has a generally cylindrical outer shape. The fuel pump 57 is housed in the pump case 50 with the motor facing left and the pump facing right. The fuel pump 57 has a fuel intake port that communicates with the intake pipe 46a of the fuel filter 46 via the pump case 50. The fuel pump 57 has a fuel discharge port that communicates with the pressure regulator 55 via the pump case 50 and the regulator case 52. An electrical connector 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. The fuel pump 57 corresponds to the "electrical equipment" referred to in this specification.

(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 sub-tank 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.

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

The secondary joint body 66 is formed as a vertically elongated strip that is flat in the front-to-rear direction and extends up and down. 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 to the front side of the main joint body 64 so that it overlaps it. The upper part of the front surface of the main joint body 64 is exposed from the secondary joint body 66. The main joint body 64 and secondary joint body 66 are made of resin. The joint member 63 corresponds to the "joint portion" referred to in this specification.

(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 to bias them 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 to limit the relative movement amount between them within a predetermined range.

(Connection between pump unit 40 and joint member 63)
As shown in Figure 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 Figure 3). In Figure 3, the joint sub-body 66 is located on the back side of the main joint 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 amount of relative rotation between them within a predetermined range.

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

(Wiring between the flange unit 20 and the 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.

(Wiring between the flange unit 20 and the 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 are thinner than the first lead wires 71. The second lead wires 72 are electrical wiring for transmitting detection signals from the sender gauge 60. The second lead wires 72 correspond to the "electrical wiring" as defined in this specification.

(Positioning of both lead wires 71 and 72)
The upper ends of the lead wires 71, 72 are hooked and positioned on the upper wiring clip 27 of the flange unit 20. The lower end of the first lead wire 71 is hooked and positioned on the lower wiring clip 53 of the regulator case 52. The lower end of the second lead wire 72 is pulled leftward from the lower connector portion 72b and hooked and positioned on 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 provided with 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 routed 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 retention structure for retaining the lead wires 71, 72 between the wiring clips 27, 53 will be described later.

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

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

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 Figure 2).

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.

(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.

Fuel vapor generated in the fuel tank 10 is introduced from the fuel vapor passage through the evaporative port 31 into the canister section 30 where it is adsorbed. The adsorbed fuel vapor in the canister section 30 is released by the intake negative pressure and purged from the purge port 33 through the purge passage into the intake passage. When fuel vapor is released from the canister section 30, atmospheric air is introduced into the canister section 30.

The fuel tank 10 deforms (expands and contracts) due to changes in internal tank pressure caused by changes in temperature, fuel volume, etc. This causes the height of the fuel tank 10 to change (increase or decrease). In this case, the flange unit 20 and the joint member 63 move vertically relative to each other, allowing the fuel supply device 18 to follow the change in height of the fuel tank 10.

(Problems that may occur 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 predicted 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 when attaching the flange unit 20 to the fuel tank 10. This could result in the protruding portions becoming 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.

(Wiring holding structure for both lead wires 71, 72)
As shown in Fig. 1, the wire holding structure 80 holds both lead wires 71, 72 movably in the axial and radial directions. The wire holding structure 80 has a first hook 81 and a second hook 85 formed on the upper front surface of the main joint body 64 of the joint member 63. Fig. 6 is a perspective view showing the wire holding structure, and Fig. 7 is a plan view of the same.

As shown in Figure 7, the joint main body 64, the first hook 81, and the second hook 85 form a horizontal, hollow wiring retention space 90. The wiring retention 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 first base portion 82 that protrudes forward from the front surface of the joint main body 64, and a strip-shaped 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 at the right end of the joint main body 64. The flexible portion 83 is formed to be flexible in the front-to-rear direction (see the two-dot chain line 83 in Figure 7).

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 protruding second base portion 86 that protrudes forward from the front surface of the joint main body 64, 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 joint main body 64.

The flexible portion 83 and the stopper portion 87 are offset from each other in the front-to-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 positioned in front of the flexible portion 83.

A first inclined surface 83a is formed at the tip of the flexible portion 83, sloping rearward from the front toward the front (left) in a plan view. Furthermore, 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 between them.

(Holding of 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 in the wire holding structure 80 provided on the joint member 63. Specifically, the worker presses the lead wires 71, 72 against the flexible portion 83 of the first hook 81, thereby bending the flexible 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 flexible 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 flexible portion 83 elastically returns to its original shape, completing the holding operation of the lead wires 71, 72 (see FIG. 6 ).

This allows both lead wires 71, 72 to be held axially and radially movable within the wiring retention space 90. Therefore, the lead wires 71, 72 move appropriately within the wiring retention space 90 in response to the extension and contraction of the joint member 63 relative to the flange unit 20 of the fuel supply device 18 and the rotation of the pump unit 40 relative to the joint member 63.

(Advantages of embodiment 1)
According to the wiring retention structure 80, the lead wires 71, 72 are retained in a state in which they extend in the vertical direction and are movable in the axial and radial directions in the wiring retention space 90 formed by the first hook 81 and the second hook 85 provided on the joint member 63 of the fuel supply device 18. Therefore, when the fuel supply device 18 is contracted when the flange unit 20 is attached to the fuel tank 10, the lead wires 71, 72 are prevented from protruding outside the projected range of the opening 13 of the fuel tank 10, and the lead wires 71, 72 are prevented from becoming caught between the fuel tank 10 and the flange unit 20.

Furthermore, the flexible portion 83 of the first hook 81 is formed to be able to flex and deform inwardly into the wiring retention space 90. Therefore, by utilizing the flexural deformation of the flexible portion 83 of the first hook 81, the space between the flexible portion 83 and the stopper portion 87 of the second hook 85 is widened, allowing the lead wires 71, 72 to be easily inserted into the wiring retention space 90 through the widened opening. Furthermore, the stopper portion 87 of the second hook 85 restricts the flexural deformation of the flexible portion 83 of the first hook 81 outwardly from the wiring retention space 90, thereby preventing the lead wires 71, 72 held in the wiring retention space 90 from coming loose. This improves the ease with which the lead wires 71, 72 can be inserted into the wiring retention space 90 while preventing the lead wires 71, 72 from coming loose from the wiring retention space 90.

Furthermore, by offsetting the flexible portion 83 and the stopper portion 87 from each other, it is possible to allow the flexible portion 83 to flex inward into the wiring holding space 90 while restricting the flexible portion 83 from flexing outward into the wiring holding space 90.

Furthermore, the flexible portion 83 and the stopper portion 87 have inclined surfaces 83a, 87a that face each other in parallel, allowing the flexible portion 83 to flex inward into the wiring retention space 90 while restricting the flexible portion 83 from flexing outward from the wiring retention space 90. Furthermore, when the lead wires 71, 72 are inserted into the wiring retention space 90 (when the flexible portion 83 flexes), 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. This improves the ease of inserting the lead wires 71, 72 into the wiring retention space 90.

[Embodiment 2]
This embodiment is a modification of the wire holding structure 80 of the first embodiment, so the modified parts will be described, and the same parts as those of the first embodiment will be assigned the same reference numerals and will not be described again. Fig. 8 is a perspective view of the wire holding structure, and Fig. 9 is a plan view of the same. Parts modified in the second embodiment will be assigned reference numerals in the 100s.

As shown in Figures 8 and 9, the wiring holding structure 180 has a first hook 181 and a second hook 185 formed on the upper front surface of the main joint body 64 of the joint member 63.

As shown in Figure 9, the joint main body 64, the first hook 181, and the second hook 185 form a horizontal, hollow wiring holding space 190. The wiring holding space 190 is formed in a horizontally elongated rectangular shape in a plan view.

The first hook 181 is formed in an L-shaped hook shape with a vertically elongated rectangular cross section. The first hook 181 has a protruding first base portion 182 that protrudes forward from the front surface of the joint main body 64, and a strip-shaped flexible portion 183 that bends in an L-shape to the right from the tip of the first base portion 182. The first base portion 182 is located at the left end of the joint main body 64. The flexible portion 183 is formed to be flexible in the front-to-rear direction (see the two-dot chain line 183 in Figure 9).

The second hook 185 is formed in an L-shaped hook shape with a vertically elongated rectangular cross section. The second hook 185 has a protruding second base portion 186 that protrudes forward from the front surface of the joint main body 64, and a stopper portion 187 that bends in an L-shape to the left from the tip of the second base portion 186. The first base portion 182 is located at the right end of the joint main body 64.

The flexible portion 183 and the stopper portion 187 are arranged so that they butt against each other in the left-right direction. The tip of the flexible portion 183 is formed with a first inclined surface 183a that slopes backward from the front toward the front (right) in a plan view. The tip of the stopper portion 187 is formed with a second inclined surface 187a that faces parallel to the first inclined surface 183a of the flexible portion 183 with a small gap between them.

The lead wires 71 and 72 are held in the wiring holding structure 180 in the same manner as in embodiment 1.

Embodiment 2 also achieves the same effects and advantages as embodiment 1.

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 also be formed by integral molding. The first hook and the second hook of the wiring holding structure may be arranged in reverse left and right. The wiring holding structure is not limited to a structure in which both hooks are integrally formed with the joint member, but may instead be a structure in which a wiring holding member having both hooks is formed and attached to the joint member.

10 Fuel tank 13 Opening hole 18 Fuel supply device 20 Flange unit (lid member)
24 First electric connector 25 Second electric connector 40 Pump unit (electrical device side)
57 Fuel pump (electrical equipment)
60 Senda gauge (electrical equipment)
63 Joint member (joint part)
71 First lead wire (electrical wiring)
72 Second lead wire (electrical wiring)
80 Wiring holding structure 81 First hook 83 Bending portion 83a First inclined surface 85 Second hook 87 Stopper portion 87a Second inclined surface 90 Wiring holding space 180 Wiring holding structure 181 First hook 183 Bending portion 183a First inclined surface 185 Second hook 187 Stopper portion 187a Second inclined surface 190 Wiring holding space

Claims (2)

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 is provided with a first hook and a second hook that extend horizontally along the electrical wiring and are configured in a horizontally elongated rectangular frame shape in a plan view, and that form a hollow wiring holding space within the frame to hold the electrical wiring movably in the vertical and horizontal directions while extending the electrical wiring in the vertical direction ,
the first hook is formed in an L-shaped hook shape having a first base portion protruding from the joint portion and a flexible portion bent from the first base portion toward the second hook and flexible and deformable toward the inside of the wiring holding space,
the second hook is formed in an L-shaped hook shape having a second base portion protruding from the joint portion and a stopper portion bent from the second base portion toward the first hook and restricting bending deformation of the bending portion of the first hook toward the outside of the wiring holding space,
a tip end of the stopper portion is disposed so as to overlap the outer side of the tip end of the flexible portion,
A wiring holding structure in which an inclined surface is formed between the tip of the flexible portion and the tip of the stopper portion, facing each other parallel with a small gap and sloping obliquely from the wiring holding space side toward the outside when viewed in the plane . 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 is provided with a first hook and a second hook that extend horizontally along the electrical wiring and are configured in a horizontally elongated rectangular frame shape in a plan view, and that form a hollow wiring holding space within the frame to hold the electrical wiring movably in the vertical and horizontal directions while extending the electrical wiring in the vertical direction ,
the first hook is formed in an L-shaped hook shape having a first base portion protruding from the joint portion and a flexible portion bent from the first base portion toward the second hook and flexible and deformable toward the inside of the wiring holding space,
the second hook is formed in an L-shaped hook shape having a second base portion protruding from the joint portion and a stopper portion bent from the second base portion toward the first hook and restricting bending deformation of the bending portion of the first hook toward the outside of the wiring holding space,
a tip end of the flexible portion and a tip end of the stopper portion are arranged to abut against each other,
A wiring holding structure in which an inclined surface is formed between the tip of the flexible portion and the tip of the stopper portion, facing each other parallel with a small gap and sloping obliquely from the wiring holding space side toward the outside when viewed in the plane.