JP2015091679A - Filler pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler pipe which has a simple structure and prevents malfunctions of an oil supply gun.SOLUTION: A retainer 20 for retaining a tip part 41 of an oil supply gun 40 is attached to the interior of an inlet part 12 of a filler pipe 10, and an opening part 32 of a breather tube 30 is connected with the inlet part 12 of the filler pipe 10. The retainer 20 includes: a retainer attachment part 22 which is attached to the inlet part 12 of the filler pipe 10; and a retainer opening part 23 which is positioned at a tip of the retainer 20, retains the tip part 41 of the oil supply gun 40, and sends a fuel to the filler pipe 10. A retainer extension wall 24 is provided at an area ranging from a tip of the retainer opening part 23 to a portion facing the opening part 32 of the breather tube 30. Retainer extension wall side part auxiliary walls and a retainer extension wall upper part auxiliary wall are respectively formed at both side parts and an upper part which are located at the outer side of the retainer extension wall 24.

Description

The present invention relates to a filler pipe having a retainer attached to an inlet portion of a filler pipe for injecting fuel from a fuel filler port into a fuel tank for an automobile.

As shown in FIG. 10, a filler pipe 110 is attached in order to inject fuel from a vehicle body fuel supply port provided in the vehicle body into an automobile fuel tank.
A fuel pipe is injected into the filler pipe 110 by inserting a tip 131 of a fuel gun 130 into the inlet 111.

  At this time, in order to hold the fuel supply gun 130 and stabilize the fuel flow, the retainer 120 is provided inside the inlet 112 of the filler pipe 110, and the distal end portion of the retainer 120 is elongated and formed into a pipe shape. There are some (for example, refer to Patent Document 1). In this case, the front end portion of the retainer 120 is extended long in order to hold the front end portion 131 of the fuel gun 130 at the front end portion of the retainer 120. At the front end portion of the retainer 120, the liquid droplets flowing from the breather pipe 130 do not hit the auto stop sensor attached to the front end portion 131 of the fuel gun 130.

  However, in this case, since the retainer 120 is formed as a separate part and the tip portion of the retainer 120 is elongated in a pipe shape, the overall weight of the retainer 120 increases, which is against the request for weight reduction of the vehicle body. Become. Moreover, in order to attach the retainer 120 to the inside of the filler pipe 110, welding or the like is required, which is troublesome.

Therefore, as shown in FIG. 11, there is a type in which the filler pipe 210 is folded back at the portion of the inlet 211 of the filler pipe 210 to form an inlet portion 212, and a synthetic resin retainer is attached to the inlet portion 212 (for example, , See Patent Document 2).
In this case, an opening 232 of the breather tube 230 is formed near the tip of the filler pipe 210, and fuel droplets may be blown out from the opening 232 of the breather tube 230 during refueling.

  When a fuel droplet or gas blows out from the opening 232 of the breather tube 230, if the droplet hits the auto-stop sensor attached to the tip of the refueling gun, the auto-stop sensor works and fuel injection is not completed. However, there is a problem that the refueling stops.

  Therefore, as shown in FIG. 12, a filler pipe attachment portion 311 and a breather tube attachment portion 312 are provided on a filler neck 310 made of synthetic resin, and a baffle plate 314 is provided at a portion facing the breather tube opening 313 of the breather tube attachment portion 312. (For example, refer to Patent Document 3).

A retainer 320 is provided on the baffle plate 314, and a vent hole 321 is provided in the retainer 320 to prevent a fuel droplet from blowing out from the breather tube opening 313.
In this case, it is necessary to attach the filler neck 310 to the tip of the filler pipe, provide the baffle plate 314 on the filler neck 310, and attach the retainer 320, and the structure becomes complicated.

JP 2009-18755 A JP-A-9-39591 JP 2008-247110 A

Accordingly, the present invention is intended to provide a filler pipe that has a simple structure and can prevent malfunction of a fuel gun.

In order to solve the above-mentioned problem, the present invention of claim 1 is a filler pipe for injecting fuel from a vehicle body filler port formed on the outer surface of a vehicle body to a fuel tank.
Install the retainer that holds the tip of the oil gun inside the filler pipe inlet, and connect the breather tube opening to the filler pipe inlet,
The retainer has a retainer mounting portion that is attached to the inlet portion of the filler pipe, and a retainer opening portion that is located at the distal end of the retainer and holds the distal end portion of the fuel gun and feeds fuel into the filler pipe.
The filler pipe is characterized in that a retainer extending wall is provided in a portion facing the opening of the breather tube from the tip of the retainer opening, and grooves are formed on both sides and the upper part of the retainer extending wall.

According to the first aspect of the present invention, in the filler pipe for injecting fuel into the fuel tank from the vehicle body refueling port formed on the outer surface of the vehicle body, the retainer for holding the tip of the fuel gun is attached to the inlet of the filler pipe. Therefore, when the refueling gun is inserted into the inlet portion of the filler pipe, the retainer guides the front end portion of the refueling gun and can be held at a predetermined position, so that fuel injection can be ensured.
Since the opening of the breather tube is connected to the inlet of the filler pipe, the fuel and gas flowing in from the breather tube can be returned to the filler pipe.

  The retainer has a retainer attaching portion attached to the inlet portion of the filler pipe, and a retainer opening portion that is located at the distal end of the retainer, holds the distal end portion of the fuel gun, and feeds fuel into the filler pipe. For this reason, when the retainer mounting portion is mounted inside the inlet portion of the filler pipe, the retainer opening portion is held at a predetermined position of the filler pipe, and the tip portion of the fuel gun is held at the portion of the retainer opening portion. The ejection direction of the can be made constant.

A retainer extending wall is provided at a portion facing the opening of the breather tube from the tip of the retainer opening, and grooves are formed on both sides and the upper part of the retainer extending wall. For this reason, the fuel droplets and gas that flowed in from the breather tube during refueling are applied to the retainer extension wall, causing the droplets to flow downward, so that the droplets do not hit the auto-stop sensor of the fuel gun. it can.
Furthermore, even if the droplet hits the retainer extending wall strongly by the grooves on both sides and the upper part of the retainer extending wall, the droplets extend to the retainer by the grooves on the both sides and upper part of the retainer extending wall. The liquid droplets can be reliably prevented from splashing without protruding from the wall.

  According to the second aspect of the present invention, the retainer extending wall side auxiliary walls on both sides of the retainer extending wall are formed by bending the side ends on both sides of the retainer extending wall into a substantially U-shaped cross section. The side wall auxiliary wall and the retainer extending wall form a groove, and the retainer extending wall upper auxiliary wall outside the retainer extending wall is formed with a gap parallel to the retainer extending wall, A filler pipe in which a groove portion is formed by an upper auxiliary wall of the retainer extending wall and the retainer extending wall.

According to the second aspect of the present invention, the retainer extending wall side auxiliary walls on both sides outside the retainer extending wall are formed by bending the side ends on both sides of the retainer extending wall into a substantially U-shaped cross section. A groove was formed by the auxiliary wall side auxiliary wall and the retainer extending wall. For this reason, it is possible to reliably prevent the droplets from splashing from the side surface of the retainer extending wall by the retainer extending wall side auxiliary walls on both sides.
The retainer extending wall upper auxiliary wall on the outer side of the retainer extending wall is formed with a gap in parallel with the retainer extending wall, and a groove is formed by the retainer extending wall upper auxiliary wall and the retainer extending wall. . For this reason, it is possible to reliably prevent droplets from splashing from the upper part of the retainer extending wall by the upper retainer extending wall upper auxiliary wall.

  According to the third aspect of the present invention, the retainer extending wall side auxiliary walls on both sides outside the retainer extending wall have a length of 5 to 10 mm, and the upper retainer extending wall on the outside of the retainer extending wall The upper auxiliary wall is a filler pipe having a length of 10 to 20 mm.

In this invention of Claim 3, since the retainer extension wall side part auxiliary wall of the both sides of the outside of a retainer extension wall is 5-10 mm in length, a droplet is strong or a retainer extension wall is large in quantity. In this case, it is possible to reliably prevent the liquid droplets from being scattered from the retainer extending wall in a lateral direction by collecting the liquid droplets at the grooves on both sides of the retainer extending wall.
The retainer extension wall side auxiliary wall on the outer side of the retainer extension wall is 10 to 20 mm in length, so that the liquid droplets are strong or a large amount hits the retainer extension wall and blows up with gas from the breather tube. In addition, the width of the groove is wide, and it is possible to reliably prevent the liquid droplets from being scattered upward from the retainer extending wall by collecting the liquid droplets in the upper groove portion of the retainer extending wall.

  The present invention of claim 4 is a filler pipe in which an air vent passage that flows in from an opening of the breather tube is provided between the filler pipe and the retainer.

  In this invention of Claim 4, since the air vent passage which flows in from the opening part of a breather tube was provided between the filler pipe and the retainer, the gas blown from the breather tube was separated from the droplets, and the opening of the filler pipe The fuel is not blown from the opening of the filler pipe when refueling.

  According to a fifth aspect of the present invention, the retainer is a filler pipe having a retainer tip that abuts the inner surface of the filler pipe closer to the inlet side than the retainer mounting portion.

  In the present invention of claim 5, since the retainer has a retainer tip that contacts the inner surface of the filler pipe on the inlet side of the retainer mounting portion, when the retainer is mounted on the inner surface of the filler pipe, Both of the retainer tip portions are held inside the filler pipe, and the retainer can be stably held on the inner surface of the filler pipe.

Retainer extending walls are provided in the part facing the breather tube opening from the tip of the retainer opening, and grooves are formed on both sides and the upper part of the retainer extending wall, so that the fuel flowing from the breather tube during refueling Droplets and gas can be applied to the retainer extension wall to prevent the droplets from hitting the auto-stop sensor of the fuel gun.
Even if the droplet hits the retainer extension wall strongly due to the grooves on both sides and the upper part of the retainer extension wall, the droplets will extend to the retainer extension wall due to the grooves on both sides and the upper part of the retainer extension wall. The liquid droplets can be reliably prevented from splashing without protruding.

The embodiment of the present invention is shown, and is a cross-sectional view of a portion where a retainer is attached to an inlet portion of a filler pipe. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating an embodiment of the present invention as viewed from a retainer extending wall side of a retainer. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention and is a perspective view seen from a retainer opening side of a retainer. The embodiment of the present invention is shown and it is a front view of a retainer. The embodiment of the present invention is shown and it is a left side view of a retainer. The embodiment of the present invention is shown and is a bottom view of the retainer. (A) shows embodiment of this invention, is sectional drawing of the retainer extension wall of a retainer, and is sectional drawing along the AA line of FIG. (B) shows embodiment of this invention and is sectional drawing of the retainer extension wall of a retainer, and is sectional drawing along the BB line of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is a front view of a retainer, illustrating a flow of liquid droplets and gas flowing from a breather tube. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a cross-sectional view of a retainer extending wall of a retainer, and is a view showing a flow of liquid droplets flowing from a breather tube. It is sectional drawing of the part which attached the retainer to the inlet_port | entrance part of the conventional filler pipe. It is sectional drawing of the inlet_port | entrance part of the other conventional filler pipe. It is a cross-sectional perspective view of another conventional filler neck.

  The present invention relates to a filler pipe 10 in which a retainer 20 is attached to a filler pipe 10 that injects fuel into a vehicle fuel tank from a vehicle body filler port provided in a vehicle body. The filler pipe 10 can be formed of synthetic resin or metal. A retainer 20 is attached to the inlet 11 of the filler pipe 10.

As shown in FIG. 1, the tip portion of the filler pipe 10 has an inlet 11 attached to a vehicle body filler (not shown) formed on the outer surface of the vehicle, and an inlet formed in a cylindrical shape from the inlet 11. Formed from portion 12. The filler pipe 10 is formed to gradually decrease in diameter from the tip of the inlet portion 12 and is continuous with a filler pipe main body (not shown).

A filler pipe protrusion 13 is formed at the inlet 12 of the filler pipe 10 so as to protrude in a flange shape on the inside. The filler pipe protrusion 13 is formed by bending the tip of the portion of the filler pipe 10 where the main body of the filler pipe 10 is folded inward at the inlet 11 into a right angle. A retainer mounting portion 22 of a retainer 20 described later is attached to the filler pipe protrusion 13.
Furthermore, a filler pipe curved portion 14 formed in an arcuate shape inside is formed at the inlet portion closer to the inlet 11 than the filler pipe protrusion 13.

A distal end of a breather tube 30 is attached to the inlet portion 12 of the filler pipe 10, and a breather tube connection portion 31 is attached to the outer wall of the filler pipe 10 by welding or the like. The tip of the breather tube 30 forms a breather tube opening 32, and the breather tube opening 32 opens inside the filler pipe 10.

Next, the retainer 20 will be described with reference to FIGS.
As shown in FIG. 1, the retainer 20 is attached to the inside of the inlet portion 12 of the filler pipe 10. The fuel gun 40 is inserted from the inlet portion 12 of the filler pipe 10, and the cylinder portion 43 of the tip portion 41 of the fuel gun is held by the retainer 20.

The retainer 20 is formed at the tip of the filler pipe 10 on the inlet 11 side, is formed continuously with the retainer tip 21 that contacts the inner surface of the inlet 12 and the retainer tip 21, and the inlet 12 of the filler pipe 10. , A retainer opening 23 formed at the tip of the retainer mounting part 22 on the filler pipe 10 main body side, and a retainer extending wall 24 extending from a part of the retainer opening 23. Consists of

As shown in FIG. 3, the retainer tip portion 21 is formed so that the tip is curved and opened outward, and a retainer tip portion notch portion 21 a in which a plurality of portions are notched is formed. For this reason, when the retainer 20 is attached to the inside of the inlet portion 12 of the filler pipe 10, the retainer distal end portion 21 can be bent inward, and elastically abuts against the inner surface of the inlet portion 12 to retain the retainer 20. Is easy to install.

Further, after the mounting, as shown in FIG. 1, the outer surface of the retainer tip 21 is elastically brought into contact with the inner surface of the filler pipe 10 and the filler pipe bending portion 14 of the inlet portion 12 of the filler pipe 10, which will be described later. The retainer 20 can be stably held inside the filler pipe 10 in combination with the retainer mounting portion flange 22 a coming into contact with the filler pipe protrusion 13.
Further, as will be described later, the gas flowing in from the breather tube 30 can be discharged from the retainer tip notch 21a.

As shown in FIGS. 3 and 4, the retainer mounting portion 22 includes a ring-shaped retainer mounting portion flange 22 a that abuts against a filler pipe protrusion 13 formed inside the inlet portion 12 of the filler pipe 10, and a retainer mounting portion. A retainer mounting portion cutout portion 22b in which a part of the flange 22a is cut out, and a retainer mounting portion rib 22c formed on the outer surface on the retainer tip portion 21 side of the retainer mounting portion flange 22a are formed.

The retainer attachment portion flange 22 a is attached to the filler pipe protrusion 13 and fixes the retainer 20 to the inlet portion 12 of the filler pipe 10.
The retainer mounting part notch 22b can provide a gap between the filler pipe protrusion 13 and the retainer mounting part flange 22a, and the gas flowing from the breather tube 30 passes through the retainer mounting part notch 22b. It can flow out to the inlet 11 of the filler pipe 10.
The retainer mounting portion rib 22c can retain the root of the retainer tip 21 and improve the strength of the retainer tip 21.

As shown in FIGS. 1 and 6, the retainer opening 23 is formed in a circular shape so that the tip portion of the fuel gun 40 can pass through, and holds the cylindrical portion 43 of the tip portion 41 of the fuel gun 40. Can do. For this reason, it is possible to smoothly inject the fuel into the filler pipe 10 by holding the fuel gun tip 41 at a predetermined position of the filler pipe 10.

  A retainer extending wall 24 is provided at a portion facing the breather tube opening 32 of the breather tube 30 from the tip of the retainer opening 23. As shown in FIGS. 5 and 6, the retainer extending wall 24 extends from a part of the retainer opening 23. For this reason, as shown by the arrows in FIG. 1, the fuel droplets and gas that have passed through the breather tube 30 and flowed into the inlet 12 of the filler pipe 10 through the breather tube opening 32 when refueling are applied to the retainer extension wall 24. Thus, the droplet can flow downward.

Thereby, it is possible to prevent the oil supply gun 40 from stopping abnormally during refueling by preventing the droplets from hitting the auto stop sensor 42 attached to the oil supply gun tip 41.
As shown in FIGS. 2 and 4, a retainer extending wall rib 24 e is formed on the upper portion of the outer surface of the retainer extending wall 24. The strength of the retainer extending wall 24 can be improved by the retainer extending wall rib 24e.

Retainer extending wall side grooves 24 c are formed on both sides on the outside of the retainer extending wall 24. In addition, a retainer extending wall upper groove portion 24 d is formed in an upper portion outside the retainer extending wall 24.
The retainer extending wall side groove portion 24 c and the retainer extending wall upper groove portion 24 d are formed continuously outside the retainer extending wall 24.

  As shown in FIGS. 2 and 3, the side ends of the both sides of the retainer extending wall 24 are bent into a substantially U-shaped cross section to form the retainer extending wall side auxiliary wall 24a, and the retainer extending wall side groove 24c is formed. doing. Accordingly, as shown in FIG. 7A, the retainer extending wall side groove 24c is formed by the retainer extending wall 24 and the retainer extending wall side auxiliary wall 24a over the entire length of the side of the retainer extending wall 24. Can be formed.

  A retainer extension wall upper auxiliary wall 24b and a retainer extension wall upper auxiliary wall 24b are formed by providing a clearance from the retainer mounting portion flange 22a to the outside in parallel with the retainer extension wall 24 to form a retainer extension wall upper auxiliary wall 24b. A retainer extending wall upper groove 24d is formed between the two. As shown in FIG.7 (b), the length of the retainer extension wall upper auxiliary wall 24b is about 10-20 mm.

  Due to the retainer extending wall side groove 24c and the retainer extending wall upper groove 24d, as shown by the arrows in FIGS. 8 and 9, the retainer extending wall 24 strongly hits the liquid flowing in from the breather tube opening 32. The retainer extending wall 24 flows along the retainer extending wall upper groove 24d and the retainer extending wall side groove 24c, and the liquid droplets flow down without protruding from the retainer extending wall 24. For this reason, the retainer extending wall upper groove portion 24d and the retainer extending wall side groove portion 24c can reliably prevent the droplets from being scattered and prevent the droplets from hitting the auto stop sensor 42.

  The retainer extending wall side auxiliary wall 24a preferably has a U-shaped wall length of 5 to 10 mm. The length refers to the length in the width direction of the bent portion of the retainer extending wall side auxiliary wall 24a in FIG. In this case, when the liquid droplet hitting the retainer extending wall 24 flows in the lateral direction, the liquid droplet is collected by the retainer extending wall side auxiliary wall 24a, and the liquid is collected from the retainer extending wall 24. It is possible to reliably prevent the droplets from splashing. If the length is less than 5 mm, droplets may protrude, and if it exceeds 10 mm, the retainer extending wall side auxiliary wall 24 a may become an obstacle when the filler pipe 10 is installed inside. .

  The retainer extending wall upper auxiliary wall 24b preferably has a length of 10 to 20 mm. The length refers to the length in the vertical direction of the retainer extending wall upper auxiliary wall 24b in FIG. In this case, when the droplet hitting the retainer extending wall 24 flows upward, the droplet is collected by the upper groove portion 24d of the retainer extending wall, and the droplet is collected from the retainer extending wall 24. It is possible to reliably prevent scattering. This is because when the length is less than 10 mm, the liquid droplet may protrude, and when it exceeds 20 mm, the retainer extending wall upper auxiliary wall 24 b may become an obstacle when being mounted inside the filler pipe 10.

As shown in FIG. 1, the fuel droplets and gas flowing in from the breather tube opening 32 hit the retainer extending wall 24, and the droplets flow downward along the retainer extending wall 24 as shown by a solid line. The gas is discharged upward as shown by the dotted line in FIG. The gas can reach the inlet 11 of the filler pipe 10 through the retainer mounting part notch 22b and the retainer tip notch 21a. Thereby, the fuel can be smoothly injected into the filler pipe 10 by the fuel gun 40.

10 Filler Pipe 11 Inlet 20 Retainer 21 Retainer Tip 22 Retainer Mounting Portion 23 Retainer Opening 24 Retainer Extension Wall 24c Retainer Extension Wall Side Groove 24d Retainer Extension Wall Upper Groove

Claims (5)

In the filler pipe that injects fuel into the fuel tank from the vehicle body filler port formed on the outer surface of the vehicle body,
A retainer that holds the tip of the oiling gun is attached to the inside of the inlet of the filler pipe, and an opening of a breather tube is connected to the inlet of the filler pipe.
The retainer has a retainer attachment portion attached to an inlet portion of the filler pipe, and a retainer opening portion that is located at a distal end of the retainer and holds the distal end portion of the fuel gun and feeds fuel into the filler pipe. Have
A filler pipe characterized in that a retainer extending wall is provided in a portion facing the opening of the breather tube from the tip of the retainer opening, and grooves are formed on both sides and the upper portion of the retainer extending wall. .   Retainer extending wall side auxiliary walls on both outer sides of the retainer extending wall are formed by bending side edges of both sides of the retainer extending wall into a substantially U-shaped cross section, and the retainer extending wall side auxiliary A groove is formed by the wall and the retainer extending wall, and the retainer extending wall upper auxiliary wall on the outer side of the retainer extending wall is formed with a gap in parallel with the retainer extending wall, and the retainer The filler pipe according to claim 1, wherein a groove portion is formed by an extension wall upper auxiliary wall and the retainer extension wall.   The retainer extending wall side auxiliary walls on both sides outside the retainer extending wall have a length of 5 to 10 mm, and the retainer extending wall upper auxiliary wall on the outer side of the retainer extending wall is long. The filler pipe according to claim 1 or 2, wherein the length is 10 to 20 mm.   The filler pipe as described in any one of Claim 1 thru | or 3 which provided the air vent path which flows in from the opening part of the said breather tube between the said filler pipe and the said retainer.   The filler pipe according to any one of claims 1 to 4, wherein the retainer has a retainer tip portion that abuts on the inner surface of the filler pipe on the inlet side of the retainer mounting portion.