JP6000064B2 - Inlet box mounting structure of fuel supply unit - Google Patents

Description

  The present invention is configured such that an inlet box is disposed in a space between a fuel pipe filler port that communicates with a fuel tank and a fuel filler opening of a vehicle body panel, and a lid that opens and closes the fuel filler opening can be locked by a lock mechanism. In particular, the present invention relates to an improvement in the structure for attaching the inlet box to the vehicle body panel.

  As a conventional structure for attaching the inlet box to the oil supply opening of the vehicle body panel, a structure in which the inlet box is fixed to the opening of the vehicle body panel by sandwiching the edge of the oil supply opening between the flange portion and the locking claw of the inlet box. Has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 4088239

  The conventional inlet box mounting structure is a structure in which the inlet box is fixed to the opening edge portion of the vehicle body panel only by the engaging force between the flange portion of the inlet box and the locking claw. May come off.

  The present invention has been made in view of the above-described conventional situation, and can fix the inlet box with a high fastening force without adding another part, and the inlet box of the fuel supply unit that does not come off even when a large external force is applied. It is an object to provide a mounting structure.

The present invention provides a fuel supply opening of a vehicle body panel, a fuel pipe communicating with a fuel tank, an inlet box disposed between a fuel supply opening portion of the fuel pipe and the fuel supply opening, and the inlet box. The vehicle body panel includes the inlet box of a fuel supply unit that is arranged to be rotatable around a provided pin , and includes a lid that opens and closes the fuel supply opening and a lid lock mechanism that locks the lid in a closed position. Inlet box mounting structure to be attached to
The inlet box includes an inlet flange portion that is in contact with an opening flange portion of the oil supply opening of the vehicle body panel with a seal member interposed therebetween, and a locking portion that sandwiches the opening flange portion with a rib of the inlet flange portion. ,
The lid lock mechanism is screwed and fixed with a mounting bracket interposed on a substantially opposite side portion of the inlet box with the fuel pipe of the engaging portion arranged in the vicinity of the pin arrangement portion ,
The mounting bracket includes a clamping portion that clamps the opening flange portion with the inlet flange portion by screwing and fixing the lid lock mechanism to the inlet box.

  According to the inlet box mounting structure of the fuel supply portion according to the present invention, the locking portion of the inlet box is locked to the opening flange portion of the vehicle body panel, and the lid lock mechanism is fixed to the inlet box by screwing via the mounting bracket. At the same time, the clamping portion formed on the mounting bracket clamps the opening flange portion of the vehicle body panel with the inlet flange portion. Thereby, an inlet box can be fixed to a vehicle body panel with high fastening force without providing another part, and even if a big external force acts, it does not come off.

It is a cross-sectional top view of the inlet box attachment structure of the fuel supply part which concerns on Example 1 of this invention. It is a sectional side view (II-II line sectional view of Drawing 1) of the mounting structure. It is an enlarged plan view of the principal part of the attachment structure. It is a perspective view of the said attachment structure. It is a schematic diagram for demonstrating the clamping force of the said attachment structure. It is an expanded sectional view (enlarged view of VI part of FIG. 1) of the latching | locking part of the said attachment structure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 to 6 are views for explaining an inlet box mounting structure of a fuel supply unit according to a first embodiment of the present invention.

  In the figure, reference numeral 1 denotes a fuel supply unit formed on the side of the vehicle body. The fuel supply unit 1 is disposed inside the fuel supply opening 2a formed in the vehicle body panel 2, a fuel pipe 3 connected to a fuel tank (not shown), and the fuel supply opening 2a. A hook-shaped inlet box 4 that surrounds a portion of the fuel filler opening 3a that is opened and closed by the fuel filler cap 3b, a lid 5 that opens and closes the fuel filler opening 2a, and thus the opening 4a of the inlet box 4, and locks the lid 5 in the closed position. And a lid lock mechanism 6. A pipe hole 4 c through which the fuel pipe 3 is inserted is formed at the bottom of the inlet box 4, and the gap between the pipe hole 4 c and the fuel pipe 3 is closed by a seal member 8.

The oil supply opening 2a of the vehicle body panel 2 has a substantially circular shape, and an opening flange portion 2b is formed at the periphery of the oil supply opening 2a so as to step down toward the vehicle interior side.

The opening 4a of the inlet box 4 has a substantially circular shape, and an inlet flange portion 4b is formed at the periphery of the opening 4a so as to overlap the opening flange portion 2b. A seal member 7 made of TPO (olefin elastomer) rubber or the like is interposed between the flange portions 4b, 2b.

The lid 5 includes a lid plate 5a and a lid arm 5b fixed to the inner surface of the lid plate 5a. The lid plate 5a has a circular shape slightly smaller in diameter than the oil supply opening 2a, and its outer peripheral edge overlaps the opening flange portion 2b. The lid arm 5b has a curved portion 5c extending from the back surface of the lid plate 5a so as to avoid an interference with the opening 4a of the inlet box 4 at the time of rotation, and the tip thereof is a pin. The curved portion 5c of the inlet box 4 is rotatably supported by a bulging portion 4d that can be accommodated via 5d. Further, the pin 9a of the urging member 9 fixed to the bulging portion 4d is in contact with the curved portion 5c. The pin 9a is applied with a biasing force in the protruding direction, whereby the lid 5 is pressed and biased in the opening direction.

A locking portion 4b 'is formed at a portion of the inlet flange portion 4b of the inlet box 4 corresponding to the bulging portion 4d and a portion approximately 90 ° therefrom. The locking portion 4b 'is configured to sandwich and lock the corresponding locked portion 2b' of the opening flange portion 2b by the inlet flange portion 4b and the rib 4g formed so as to face the inlet flange portion 4b. Is formed.

A lock member 5f having a lock hole 5e is provided on the opposite side of the pin 5d of the lid plate 5a. A lock pin 6b that protrudes from the lock body 6a of the lid lock mechanism 6 is engaged with the lock hole 5e. The lock pin 6b is urged in the protruding direction by a built-in spring or the like. When the release cable 6c is pulled in the direction of arrow a, the engagement with the lock hole 5e of the lock pin 6b is released, and the lid 5 is urged. The member 9 is slightly opened in the opening direction by the urging force of the member 9.

Here, the lid lock mechanism 6 is disposed on the substantially opposite side of the locking portion 4b 'formed in the bulging portion 4d, and rotates between the lock body 6a and the side wall 4e of the inlet box 4. The fixing bracket 10 is interposed, and the screw portion 6e is protruded inward from the attachment hole 4f of the side wall 4e, and the nut 6d is screwed to the protruding portion to be screwed and fixed to the side wall 4e. Yes.

The mounting bracket 10 is integrally formed with a clamping portion 10a. The clamping portion 10a, by fastening a nut 6d to the lid lock mechanism 6 side wall 4e of the inlet box 4, the opening flange portion 2b of the vehicle body panel 2, and Inre' Tohu flange portion 4b of the inlet box 4 Hold with. As a result, the inlet flange 4 of the inlet box 4 is fixed to the opening flange 2b of the vehicle body panel 2, and the seal member 7 interposed therebetween is compressed.

  Here, the compression force f applied to the seal member 7 is expressed as follows: F = F × sin α, where F is the axial force due to tightening of the nut 6d, and α is the angle formed by the axis of the screw portion 6e and the opening flange portion 2b. .

In order to attach the inlet box 4 in the fuel supply unit 1 according to the present embodiment, first, the lid 5 is attached to the inlet box 4 by the pin 5d, and the seal member 7 is disposed on the opening flange portion 2b of the vehicle body panel 2, The inlet box 4 is inserted into the refueling opening 2a so that the bulging part 4d enters first, and the locked part 2b 'of the opening flange part 2a is sandwiched between the locking parts 4b' of the inlet flange part 4b. At the same time, the inlet flange portion 4b is brought into contact with the opening flange portion 2b with the seal member 7 interposed therebetween. Subsequently, the threaded portion 6e of the lid lock mechanism 6 is inserted into the mounting hole 4f of the side wall 4e of the inlet box 4 with the mounting bracket 10 interposed therebetween, and the nut 6d is screwed into the threaded portion 6e from within the inlet box 4, Tighten and fix. As a result, the clamping portion 10 a formed on the mounting bracket 10 clamps the opening flange portion 2 b of the vehicle body panel 2 with the inlet flange portion 4 b of the inlet box 4. In this way, the inlet box 4 can be fixed to the vehicle body panel 2 with a high fastening force by the nut 6d without providing another part, and will not come off even when a large external force is applied.

  Further, since the opening flange portion 2b and the inlet flange portion 4b are firmly clamped by tightening the nut 6d, the seal member 7 interposed between the flange portions 2b and 4b can be sufficiently compressed, and the sealing performance can be improved.

DESCRIPTION OF SYMBOLS 1 Fuel supply part 2 Car body panel 2a Oil supply opening 2b Opening flange part 3 Fuel pipe 3a Oil supply port 4 Inlet box 4b Inlet flange part 4b 'Locking part 5 Lid 6 Lid lock mechanism 10 Mounting bracket 10a Clamping part

Claims (1)

An oil supply opening of a vehicle body panel, a fuel pipe communicating with a fuel tank, an inlet box provided between the fuel supply port portion of the fuel pipe and the oil supply opening, and a pin provided in the inlet box An inlet box that attaches the inlet box to the vehicle body panel of a fuel supply section that is arranged to be rotatable around and includes a lid that opens and closes the fuel supply opening and a lid lock mechanism that locks the lid in a closed position. Mounting structure,
The inlet box includes an inlet flange portion that is in contact with an opening flange portion of the oil supply opening of the vehicle body panel with a seal member interposed therebetween, and a locking portion that sandwiches the opening flange portion with a rib of the inlet flange portion. ,
The lid lock mechanism is screwed and fixed with a mounting bracket interposed on a substantially opposite side portion of the inlet box with the fuel pipe of the engaging portion arranged in the vicinity of the pin arrangement portion ,
The mounting bracket includes a clamping portion that clamps the opening flange portion with the inlet flange portion by screwing and fixing the lid lock mechanism to the inlet box. Box mounting structure.

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