JP2019043417A - Seal structure of oil filler port box - Google Patents

Abstract

To provide a seal structure of an oil filler port box which can prevent entry of water even when being subject to high water pressure and achieves improvement of sealability between an oil filler port box and a vehicle body.SOLUTION: In a seal structure of an oil filler port box 10, the oil filler port box 10 has a box body part 13 and a box flange part 11. A box seal member 20 is attached to a periphery of the box flange part 11. The box seal member 20 has: a seal member body part 21 attached to the box flange part 11; a first seal part 22 which is formed at the seal member body part 21 and contacts with a vehicle body flange part 3; and a second seal part 26 which is formed at a tip of the seal member body part 21 and contacts with the vehicle body flange part 3 or the vehicle body 2 which is located at the vehicle outer side of a portion with which the first seal part 22 contacts. A portion of a tip of the first seal part 21 which contacts with the vehicle body flange part 3 is formed so as to have a cross section formed into an arc shape.SELECTED DRAWING: Figure 4

Description

The present invention relates to a seal structure of a filler port box between a filler port box attached to a filler port of a vehicle body and the vehicle body.

When fuel is supplied to the automobile fuel tank, the fuel supply port cover 130 for closing the fuel supply port 101 provided in the vehicle body is opened, and the fuel is supplied from the fuel supply port 101.
At this time, as shown in FIG. 7 and FIG. 8, the lid attachment member 131 is attached to the back surface of the filler cap 130, and the lid attachment member 131 is attached to the filler port box 110. The filler cap 130 is attached together with the filler port box 110 so as to close the filler port 101.

The filler hole box 110 is attached between the vehicle body flange portion 103 extended from the vehicle body 102 formed in the vicinity of the filler hole 101 and the filler hole 101.
The filler port box 110 has a box main body 113 attached between the filler opening 101 and the vehicle body flange portion 103, and a box flange portion 111 extending in the direction of the vehicle body flange portion 103 from the tip of the box body 113 There is.

The box flange portion 111 is attached with a seal member 120 that abuts on the vehicle body flange portion 103 (see, for example, Patent Document 1). In the seal member 120, a first seal lip 121 in contact with the side of the vehicle body flange portion 103 on the oil inlet 101, and a second seal lip in contact with the vehicle body flange portion 103 outside the vehicle than a portion where the first seal lip 121 abuts. 122 are formed.

  In this case, the contact area where the first seal lip 121 abuts on the vehicle body flange portion 103 is small, and when strong water pressure is applied, the first seal lip 121 may be lifted from the vehicle body flange portion 103 and the sealing performance may be degraded.

JP, 2014-69595, A

Therefore, the present invention is intended to provide a seal structure of a filler port box in which the sealing property between the filler port box and the vehicle body can be improved, which can prevent the entry of water even if strong water pressure is applied.

In order to solve the above-mentioned problems, the present invention according to claim 1 relates to a seal structure of a filler port box between a filler port box attached to a filler port of a vehicle body and the vehicle body,
The filler port box has a box main body attached between the vehicle body flange formed in the vicinity of the fuel filler and the fuel filler, and a box flange extending in the direction of the vehicle flange from the upper end of the box main body. ,
A box seal member is attached to the periphery of the box flange portion,
The box seal member includes a seal member body attached to the box flange, a first seal formed on the seal body and contacting the vehicle flange, and a first seal formed at the tip of the seal body. It has a second seal portion that abuts on the vehicle body flange portion or the vehicle body outside the vehicle than the portion that abuts,
The portion in contact with the vehicle body flange portion at the tip of the first seal portion is a seal structure of the filler port box characterized in that the cross-sectional shape is formed in an arc shape.

According to the first aspect of the present invention, in the seal structure of the filler port box between the filler port box attached to the filler port of the vehicle body and the vehicle body, the filler port box includes a vehicle body flange portion formed in the vicinity of the filler port and the fuel filler. It has a box body portion attached between the mouth and a box flange portion extending in the direction of the vehicle body flange portion from the upper end of the box body portion. Therefore, it is possible to attach the filler port box to the filler port, close the gap between the filler port and the vehicle body by the box body portion and the box flange portion, and attach the filler cap to the filler port box.

Since the box seal member is attached to the periphery of the box flange portion, the box seal member abuts on the vehicle body flange portion or the vehicle body, and between the entire periphery of the vehicle body flange portion or the vehicle body and the entire periphery of the box flange portion Sealability can be secured.

The box seal member has the seal member main body portion attached to the box flange portion, so that the box seal member can be securely attached to the box flange portion.
The first seal formed from the seal member main body and in contact with the vehicle body flange portion, and the tip formed in the tip of the seal member main body and a portion in contact with the vehicle body flange outside the vehicle than the portion in contact with the first seal portion 2Has a seal part. For this reason, double sealing can be performed at the first seal portion and the second seal portion, and the sealing performance can be improved.

The cross-sectional shape of the portion in contact with the vehicle body flange portion at the tip of the first seal portion is formed in an arc shape. Therefore, when the tip end of the first seal portion abuts on the vehicle body flange portion, the arc-shaped cross section of the first seal portion adheres closely to the vehicle body flange portion and the cross sectional shape of the first seal portion The contact area between the arc-shaped portion and the vehicle body flange portion can be increased, and the sealing performance can be improved.

The present invention according to claim 2 forms the box flange hole portion in the box flange portion, and the first seal portion of the box seal member attached to the portion where the box flange hole portion is formed is on the lower surface of the seal member main portion. It is a seal structure of a filler port box which has a section formed in the shape of a U-shaped groove in section.

In the present invention of claim 2, the first seal portion of the box seal member formed in the box flange portion in the box flange hole portion and attached to the portion in which the box flange hole portion is formed is on the lower surface of the seal member main portion. It has a groove-shaped portion having a U-shaped cross section. For this reason, the lower surface of the first seal portion in contact with the vehicle body flange portion forms an arc shape having a U-shaped cross section, and is easily bent when the arc-shaped tip of the first seal portion abuts with the vehicle body flange portion. The contact area between the arc-shaped tip of the seal portion and the vehicle body flange portion can be increased, and the sealing performance can be improved.

The present invention according to claim 3 is the seal structure of the fuel supply port box in which the grooved portion of the first seal portion forms an opening, and the opening is opened by the box flange hole.

According to the third aspect of the present invention, the groove-shaped portion of the first seal portion forms an opening, and the opening opens at the box flange hole. The grooved portion of the first seal portion has an opening in the vehicle exterior direction, so the first seal portion is easily bent and the tip of the first seal portion can be in close contact with the vehicle body flange portion. Further, the seal main body of the box seal member can be held around the opening of the box flange by the box flange at the upper and lower surfaces, and the box seal can be firmly attached to the box flange, (1) The seal portion is easily bent, and the sealability can be improved.

According to the fourth aspect of the present invention, the first seal portion of the box seal member attached to the portion where the box flange hole portion is not formed in the box flange portion is hollow in a J shape in cross section on the lower surface of the seal member main portion. The tip of the J-shaped cross section of the first seal portion having the formed portion is a seal structure of the filler port box having a notch portion between the first seal portion and the seal member main body portion.

In the present invention of claim 4, the first seal portion of the box seal member attached to the portion where the box flange hole portion is not formed in the box flange portion has a hollow shape with a J-shaped cross section on the lower surface of the seal member body portion. It has the formed part, and the cross-sectional J-shaped front end of the 1st seal part has a notch between the seal member body parts. Therefore, the lower surface of the seal member main body portion in contact with the vehicle body flange portion has a curved shape with a J-shaped cross section, and the tip end of the first seal portion and the vehicle body when the front end of the first seal portion abuts with the vehicle body flange portion. The contact area with the flange portion can be increased, and the sealing performance can be improved. In addition, since the notch portion is provided between the seal member main body portion, the first seal portion can be easily bent, and the tip end of the first seal portion can be in close contact with the vehicle body flange portion.

The present invention according to claim 5 is the seal structure of the filler opening box in which the box flange portion is embedded in the seal member main body portion.

In the present invention of claim 5, since the box flange portion is embedded in the seal member body portion, the seal member body portion is firmly fixed to the box flange portion, and the box seal member is attached to the box flange portion. As a result, the first seal portion and the second seal portion reliably abut the vehicle body flange portion, and the sealing performance can be improved.

According to a sixth aspect of the present invention, the second seal portion is formed in a lip shape, and has a seal structure of a filler port box whose tip end abuts on the body flange portion or the tip end of the body.

In the present invention of claim 6, the second seal portion is formed in a lip shape, and the tip end abuts on the body flange portion or the tip end of the body, so the second seal portion is bent along the shape of the body flange portion or body. The sealability can be improved easily.

The present invention according to claim 7 is the seal structure of a filler port box formed of rubber or thermoplastic elastomer, as the box seal member.

According to the seventh aspect of the present invention, the box seal member is formed of rubber or thermoplastic elastomer, so it is easily elastically bent along the shape of the vehicle body flange portion or the vehicle body, and the sealing performance can be improved.

Since the first seal portion and the second seal portion formed on the seal member main body portion and in contact with the vehicle body flange portion are provided, double sealing can be performed by the first seal portion and the second seal portion, and the sealability is improved. be able to.
The cross-sectional shape of the portion in contact with the vehicle body flange portion of the tip of the first seal portion is formed in an arc shape, so when the tip of the first seal portion abuts with the vehicle body flange portion, the tip of the first seal portion Can be in close contact with the vehicle body flange portion, and the contact area between the tip of the first seal portion and the vehicle body flange portion can be increased, and the sealing performance can be improved.

It is a perspective view which shows embodiment of this invention, and was seen from diagonally upward of the filler socket. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view of a filler port box according to an embodiment of the present invention. The embodiment of this invention is shown, It is a fragmentary sectional view before contact | abutting to the vehicle body flange part of a box seal member, It is sectional drawing along the AA of FIG. It is a fragmentary sectional view after contact | abutting to the vehicle body flange part of a box seal member which shows embodiment of this invention, and is sectional drawing along the AA of FIG. The embodiment of this invention is shown, It is a fragmentary sectional view before contact | abutting to the vehicle body flange part of a box seal member, It is sectional drawing along the BB line of FIG. It is a fragmentary sectional view after contact | abutting to the vehicle body flange part of a box seal member which shows embodiment of this invention, and is sectional drawing along the BB line of FIG. It is sectional drawing of the conventional filler opening part. It is sectional drawing of the box seal member of the conventional filler opening part.

The present invention relates to a seal structure between a filler opening box 10 attached to a filler opening 1 of a vehicle body 2 and a vehicle body flange portion 3.
In the present invention, first, the shape of the filler port box 10 will be described, and next, the box seal member 20 attached to the filler port box 10 will be described.

As shown in FIGS. 1 and 2, the filler port box 10 is formed in a rectangular box shape, and is provided with a box main body portion 13 formed so as to surround the periphery of the rectangle and extend downward by a predetermined width. There is.
In the present embodiment, the filler port box 10 is formed in a rectangular shape, but can be formed in a circular shape or another shape according to the shape of the filler port 1 or the vehicle body.
The lower end of the box body 13 is formed with an opening as a box filler port 14 connected to the filler port 1. The box body portion 13 is attached so as to close a space between the vehicle body flange portion 3 which is extended from the vehicle body 2 and is formed around the fuel supply port 1 and the fuel supply port 1.

A box flange portion 11 is extended from the upper end of the box body portion 13 in the lateral direction of the fuel supply port box 10, that is, in the direction of the vehicle body flange portion 3 over the entire circumference of the box body portion 13.
The filler hole box 10 is mounted between the vehicle body flange portion 3 and the filler hole 1 of the vehicle body 2, and the box body portion 13 and the box flange portion 11 close the gap between the filler hole 1 and the vehicle body flange portion 3 of the vehicle body 2. , A filler cap (not shown) can be attached to the filler port box 10.
A box seal member 20 described later is attached to the box flange portion 11 to seal between the vehicle body flange portion 3 and the box flange portion 11.

A box flange hole portion 12 is formed in the box flange portion 11. In this embodiment, two short pieces are formed on each side of the quadrangle, one short side is formed on the short side, and one long one is formed on the long side. Although the height and the number can be changed as appropriate, it is preferable that the box flange holes 12 be substantially uniformly distributed over the entire circumference of the box flange 11.
It attaches to the box flange hole part 12 so that a part of box seal member 20 mentioned later may entrap.

Next, the box seal member 20 will be described based on FIGS. 3 to 6.
The box seal member 20 is attached all around the box flange portion 11.
The box seal member 20 includes a seal member main body 21 attached to the box flange 11, a first seal 22 formed on the lower surface of the seal member main body 21 and abutting on the vehicle body flange 3, and the seal member main body 21. It has a second seal portion 26 which abuts on a vehicle body 2 on which a vehicle body flange portion 3 or a vehicle body flange portion 3 formed outside the vehicle than a portion formed at the tip end and abuts the first seal portion 22.

The seal member main body portion 21 is formed in a flat plate shape, and the box flange portion 11 is embedded in the seal member main body portion 21. Since the box flange portion 11 is embedded in the seal member main body portion 21, the seal member main body portion 21 is firmly held by the box flange portion 11, and the box seal member 20 can be attached to the box flange portion 11.
In the portion where the box flange hole 12 is provided, the seal member body 21 also has a space.

The first seal portion 22 and the second seal portion 26 which are the two seal portions reliably abut the vehicle body flange portion 3 or the vehicle body 2 to improve the sealing performance, and the first seal portion 22 and the second seal In the portion 26, the space between the filler hole box 10 and the vehicle body flange portion 3 or the vehicle body 2 can be double sealed, and the sealing performance can be improved.

The first seal portion 22 has a cross-sectional shape different from that of a portion attached to the box flange hole portion 12 of the box flange portion 11 and a portion attached to a portion where the box flange hole portion 12 is not formed.
First, the shape of the first seal 22 attached to the box flange hole 12 will be described, and then the shape of the first seal 22 attached to a portion where the box flange 12 is not formed will be described.

As shown in FIGS. 3 and 4, in the first seal portion 22 attached to the box flange hole portion 12, the first seal portion 22 is formed in the lower surface of the seal member main portion 21 in a groove shape having a U-shaped cross section. The first seal groove portion 24 of the first seal portion 22 has an opening in the vehicle outer direction (upper side in FIG. 3).

That is, the first seal portion groove portion 24 is formed in the box flange hole portion 12, and the opening portion of the first seal portion groove portion 24 is opened in the vehicle outward direction through the box flange hole portion 12. Therefore, when the box seal member 20 is formed, the core of the mold forming the first seal portion 22 can be taken out from the box flange hole portion 12. Thus, the seal member main body portion 21 is firmly attached so as to sandwich the upper and lower surfaces of the box flange portion 11 through the box flange hole portion 12.

The first seal bottom 23 of the first seal 22 has an arc shape with a U-shaped cross section. Therefore, the first seal portion 22 is easily bent by the first seal portion groove portion 24 having the opening portion, and the first seal portion bottom portion 23 can be in close contact with the vehicle body flange portion 3.
As shown in FIG. 4, when the filler hole box 10 is attached to the vehicle body 2, the first seal bottom 23 of the first seal 22 in contact with the vehicle body flange 3 is bent along the vehicle body flange 3. The contact area between the first seal bottom 23 and the vehicle body flange 3 can be increased, and the sealing performance can be improved.

Next, the shape of the first seal 22 attached to the portion where the box flange hole 12 is not formed will be described.
As shown in FIGS. 5 and 6, the first seal portion 22 attached to the portion where the box flange hole portion 12 is not formed is formed in a hollow shape having a J-shaped cross section on the lower surface of the seal member main portion 21. .

That is, although the first seal portion 22 of this portion is formed in a hollow shape, the first seal portion 22 provided extending from the lower surface of the seal member main body portion 21 is curved in a J shape to have a hollow first shape. The first seal groove portion 24 is formed, and a first seal portion notch 25 is provided between the J-shaped tip and the seal member main body 21. The bottom of the first seal groove 24 forms an arc-shaped first seal bottom 23.

That is, a hollow first seal groove portion 24 is formed on the lower surface side of the box flange portion 11, and a first seal notch portion 25 communicating with the first seal groove portion 24 is provided. Therefore, when the box seal member 20 is formed, the core of the mold forming the first seal portion 22 can be taken out from the first seal portion notch portion 25.

Similar to the first seal portion 22 formed in the box flange hole portion 12, the first seal portion bottom portion 23 of the first seal portion 22 forms an arc shape having a U-shaped cross section. Therefore, the first seal portion 22 is easily bent, and the first seal portion bottom portion 23 can be in close contact with the vehicle body flange portion 3. The box flange portion 11 is embedded in the sealing member main body portion 21 so as to sandwich the upper and lower surfaces of the box flange portion 11, and the sealing member body portion 21 is formed in close contact with the box flange portion 11.

As shown in FIG. 6, when the filler hole box 10 is attached to the vehicle body 2, the first seal bottom 23 is pushed by the vehicle flange 3 so that the first seal notch 25 is formed on the seal member body 21. It is blocked to abut. Since the first seal bottom 23 of the first seal 22 in contact with the vehicle body flange 3 is formed in an arc shape, the first seal bottom 23 and the vehicle body flange are bent along the vehicle body flange 3. The contact area with 3 can be increased, and the sealability can be improved.

Next, the second seal portion 26 will be described.
The second seal portion 26 is formed in a lip shape, and its tip end is in contact with the front end of the vehicle body flange 3 or the front end of the vehicle body 2 close to the vehicle body flange 3. The second seal portion 26 has the same cross-sectional shape as the portion attached to the box flange hole portion 12 of the box flange portion 11 and the portion attached to the portion where the box flange hole portion 12 is not formed.

The second seal portion 26 can be in contact with the front end of the vehicle body flange portion 3 or in contact with the front end of the vehicle body 2 close to the vehicle body flange portion 3 depending on the shape of the vehicle body flange portion 3.
Further, since the second seal portion 26 is formed in a lip shape, flexibility is high, and the second seal portion 26 is easily bent along the shape of the vehicle body flange portion 3 or the vehicle body 2 to improve the sealing performance. Can.

The box seal member 20 can be formed of a synthetic rubber such as EPDM rubber or a thermoplastic elastomer such as an olefin-based thermoplastic elastomer.
In this case, both the first seal portion 22 and the second seal portion 26 are easily elastically bent along the shape of the vehicle body flange portion 3 or the vehicle body 2, and the sealing performance can be improved.

Reference Signs List 2 vehicle body 3 vehicle body flange portion 10 filler opening box 11 box flange portion 12 box flange hole portion 20 box seal member 21 seal member main body portion 22 first seal portion 26 second seal portion

Claims (7)

In the seal structure of the filler port box between the filler port box attached to the filler port of the vehicle body and the vehicle body,
The fuel supply port box is a box body extending between the vehicle body flange formed in the vicinity of the fuel supply port and the fuel supply port, and a box extending in the direction of the vehicle body flange from the upper end of the box main body. Has a flange,
A box seal member is attached to the periphery of the box flange portion;
The box seal member is formed at a seal member body portion attached to the box flange portion, a first seal portion formed from the seal member body portion and in contact with the vehicle body flange portion, and a tip of the seal member body portion The vehicle body flange portion outside the vehicle than the portion where the first seal portion abuts, or a second seal portion abutted against the vehicle body,
A seal structure of a filler port box, wherein a portion of a tip of the first seal portion in contact with the vehicle body flange portion is formed in an arc shape in cross section. A box flange hole is formed in the box flange portion, and the first seal portion of the box seal member attached to the portion where the box flange hole portion is formed has a U-shaped cross section on the lower surface of the seal member body. The seal structure of a filler port box according to claim 1 having a grooved portion. The seal structure of a filler port box according to claim 2, wherein the grooved portion of the first seal portion forms the opening, and the opening opens at the box flange hole. The first seal portion of the box seal member attached to the portion where the box flange hole portion is not formed in the box flange portion is a hollow portion having a J-shaped cross section on the lower surface of the seal member main portion. The seal structure of a filler port box according to claim 1, further comprising: a front end of the J-shaped cross section of the first seal portion has a notch portion between the first seal portion and the seal member main body portion. The seal structure of a filler port box according to any one of claims 1 to 4, wherein the box flange portion is embedded in the seal member main body portion. The seal structure of a filler port box according to any one of claims 1 to 5, wherein the second seal portion is formed in a lip shape, and a tip end abuts on the vehicle body flange portion or a tip end of the vehicle body. The seal structure of a filler port box according to any one of claims 1 to 6, wherein the box seal member is formed of rubber or a thermoplastic elastomer.

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