JP2015160558A - filler pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler pipe that has a simple structure, and can prevent an oil supply gun from malfunctioning and droplets from being blown back.SOLUTION: A screw part is formed in an entrance part of a filler pipe, and a plurality of projection parts which projects inward are formed inwardly beyond the screw part of the filler pipe. A retainer 20 has a retainer tip part 21, a retainer fitting part 22, and a retainer opening part 23. A spiral retainer screw part 24 is formed over from a root of the retainer tip part 21 to the retainer fitting part 22, the retainer tip part 21 has a plurality of retainer tip cut parts 21a formed in an axial direction, and the projection parts of the filler pipe are fitted in the retainer tip cut parts 21a.

Description

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

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.
Fuel is injected into the filler pipe 110 by inserting the tip portion 141 of the fuel gun 140 into the inlet 111.

  At this time, in order to hold the fuel supply gun 140 and stabilize the fuel flow, the retainer 120 is provided inside the inlet 112 of the filler pipe 110, and the tip of the retainer 120 is formed to be elongated in 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 141 of the fuel gun 140 at the front end portion of the retainer 120. At the front end portion of the retainer 120, the auto stop sensor attached to the front end portion 141 of the oil supply gun 140 is prevented from hitting the liquid droplets flowing from the breather pipe 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, there is a case in which a retainer extending wall 327 is provided in order to prevent droplets from hitting the retainer 320 made of synthetic resin from the retainer opening 323.
In this case, in order to attach the retainer 320 to the filler pipe 210 shown in FIG. 11, a retainer first fixing plate 325 and a retainer second fixing plate 326 are provided on the retainer attaching portion 322 of the retainer 20, and the retainer first fixing plate 325 is provided. In some cases, the retainer second fixing plate 326 is screwed into the threaded portion 213 of the filler pipe 210.

  However, in this case, when the retainer 320 is screwed into the filler pipe 110, if the retainer first fixing plate 325 and the retainer second fixing plate 326 rotate along the screw portion 213, the retainer 320 is shaken with respect to the axial direction. As a result, the tip of the retainer extending wall 327 extending from the retainer opening 323 interferes with the inner surface of the filler pipe 210, so that the shape of the retainer extending wall 327 is limited, and the auto stop sensor malfunctions or liquids. In some cases, it is insufficient to prevent the droplets from blowing back.

JP 2009-18755 A JP-A-9-39591

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

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.
A filler pipe thread is formed inside the filler pipe inlet, and a retainer that holds the tip of the oil gun is attached. Forming convex parts,
The retainer is positioned at the tip of the retainer, the retainer tip that is held in contact with the inner surface of the inlet portion of the filler pipe, the retainer attachment portion that extends from the retainer tip and is attached to the inner surface of the inlet portion of the filler pipe, and the retainer. Holding the tip of the refueling gun, and having a retainer opening for feeding fuel into the filler pipe,
A helical retainer thread is formed from the root of the retainer tip to the retainer mounting portion. A plurality of retainer tip notches are formed in the retainer tip in the axial direction, and a filler pipe is formed in the retainer tip notch. It is a filler pipe characterized by fitting convex portions.

  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 thread portion of the filler pipe is formed inside the filler pipe inlet, and the fuel gun A retainer was attached to hold the tip. For this reason, when the refueling gun is inserted into the inlet portion of the filler pipe, the retainer guides the tip of the refueling gun and can hold it in a predetermined position, thereby smoothly injecting fuel. Can do.

  A plurality of convex portions of the filler pipe projecting inward are formed behind the threaded portion of the filler pipe. For this reason, the retainer can be fixed in the filler pipe by engaging the convex portion of the filler pipe with the notch of the retainer screwed into the filler pipe.

  The retainer is positioned at the tip of the retainer, the retainer tip that is held in contact with the inner surface of the inlet portion of the filler pipe, the retainer attachment portion that extends from the retainer tip and is attached to the inner surface of the inlet portion of the filler pipe, and the retainer. And a retainer opening for holding the tip of the fuel gun and feeding 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 spiral retainer screw portion was formed from the root of the retainer tip to the retainer mounting portion. For this reason, by screwing the retainer thread part into the filler pipe thread part, there is little blurring in the axial direction of the filler pipe during screwing, the retainer extending wall does not interfere with the inner surface of the filler pipe, and the shape of the retainer extending wall The retainer extending wall can prevent the malfunction of the fuel gun and the spraying back of the droplets.

  A plurality of retainer tip notches are formed in the retainer tip portion in the axial direction, and a convex portion of the filler pipe is fitted into the retainer tip notch portion. For this reason, it becomes easy to bend a retainer front-end | tip part, it becomes easy to attach a retainer in a filler pipe, a convex part of a filler pipe can be fitted to a retainer front-end | tip notch part, and a retainer can be fixed reliably.

  According to a second aspect of the present invention, the retainer screw portion is a filler pipe in which a retainer tip notch portion is notched and a retainer tip protrusion is formed in a portion adjacent to the retainer tip notch.

  According to the second aspect of the present invention, the retainer screw portion has a retainer tip notch portion that is notched, and a retainer tip protrusion formed in a portion adjacent to the retainer tip notch portion. For this reason, rotation of the retainer can be stopped by the retainer tip protrusion, and the filler pipe convex portion fitted in the retainer tip notch can be reliably held, and the retainer can be more reliably fixed.

  The present invention of claim 3 is a filler pipe in which 4 to 8 retainer tip notches are formed.

  According to the present invention of claim 3, since 4 to 8 retainer tip notches are formed, the retainer tip is easily bent over the entire circumference, and the filler pipe convex portion is securely held by the retainer tip notch. And the retainer can be more securely fixed.

  According to a fourth aspect of the present invention, the retainer opening is a filler pipe formed to be inclined with respect to the central axis of the retainer.

  In the present invention of claim 4, since the retainer opening is formed to be inclined with respect to the central axis of the retainer, when the tip of the oil gun is held by the retainer opening, along the inner surface of the filler pipe, Fuel can be injected smoothly from the gun.

  The present invention of claim 5 is a filler pipe in which a retainer extending wall is provided in the distal direction from the retainer mounting portion.

  According to the fifth aspect of the present invention, since the retainer extending wall is provided in the distal direction from the retainer mounting portion, the tip of the fuel gun is covered with the retainer extending wall so that the droplet does not hit the auto stop sensor of the fuel gun. Can be.

  The present invention according to claim 6 is the filler pipe in which the retainer extending wall is formed at a portion facing the opening of the breather tube attached to the inlet of the filler pipe.

  In this invention of Claim 6, the retainer extension wall was formed in the part facing the opening part of the breather tube attached to the inlet part of a filler pipe. 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.

Since the spiral retainer threaded part is formed from the root of the retainer tip to the retainer mounting part, there is little blurring in the axial direction of the filler pipe when screwed in, and the retainer extension wall does not interfere with the inner surface of the filler pipe. The shape of the extending wall can be increased.
A plurality of retainer tip notches are formed in the retainer tip in the axial direction, and the convex portion of the filler pipe is fitted to the retainer tip notch, so that the filler pipe convex portion is fitted to the retainer tip notch. Thus, the retainer can be securely fixed.

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. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention and is a perspective view of a retainer as viewed from a retainer tip end side. 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 sectional view of a retainer. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is a cross-sectional view illustrating a state in which a retainer is started to be screwed into a thread portion of an inlet portion of a filler pipe when the retainer is attached to the filler pipe. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is a cross-sectional view of a state in the middle of screwing a retainer into a threaded portion of an inlet portion of a filler pipe when a retainer is attached to the filler pipe. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, and is a cross-sectional view showing a state where a retainer is attached to a flange portion of an inlet portion of a filler pipe when the retainer is attached to the filler pipe. FIG. 9 shows the embodiment of the present invention, and is a cross-sectional view taken along the line AA of FIG. 8 with a retainer attached to the filler pipe. 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 the perspective view seen from the opening part side of the other conventional retainer.

  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. 8, the tip portion of the filler pipe 10 includes an inlet 11 attached to a vehicle body filler (not shown) formed on the outer surface of the vehicle body, and an inlet formed in a cylindrical shape from the inlet 11. Part 12 is provided. 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).

The inlet portion 12 of the filler pipe 10 is formed with a threaded portion 13 of the filler pipe 10 that protrudes inwardly in a spiral shape. A tank cap (not shown) attached to the inlet 11 of the filler pipe 10 is screwed to the threaded portion 13 of the filler pipe 10.
A flange portion 14 that protrudes into the filler pipe 10 is formed behind the portion where the threaded portion 13 of the filler pipe 10 is provided.

  As shown in FIG. 9, a plurality of convex portions 15 of the filler pipe 10 projecting inward are formed between the threaded portion 13 and the flange portion 14 of the filler pipe 10. The retainer tip notch 21 a of the retainer 20 screwed into the filler pipe 10 is engaged with the convex portion 15, and the retainer 20 can be attached in the filler pipe 10 to prevent the retainer 20 from rotating.

The tip of the breather tube 30 is attached deeper than the flange portion 14 of the inlet portion 12 of the filler pipe 10 is formed, and the 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. When the retainer 20 is attached, the retainer extending wall 27 described later is positioned so as to face the breather tube opening 32.

Next, the retainer 20 is demonstrated based on FIGS. 1-5 and FIG.
As shown in FIG. 8, the retainer 20 is attached to the inside of the inlet portion 12 of the filler pipe 10. A fuel gun (not shown) is inserted from the inlet 12 of the filler pipe 10, and the cylindrical portion at the tip of the fuel gun is held by the retainer 20.

As shown in FIG. 1, the retainer 20 includes a retainer tip 21 that is held in contact with the inner surface of the inlet 12 of the filler pipe 10, and an inner surface of the inlet 12 of the filler pipe 10 that extends from the retainer tip 21. A retainer mounting portion 22 having a cylindrical shape that is attached to the retainer 20 and a retainer opening 23 that is located at the tip of the retainer 20 and that holds the tip of the fuel gun and feeds fuel into the filler pipe 10.

As shown in FIG. 5, the retainer tip 21 is formed in a funnel shape so that the tip opens outward, and a retainer tip notch 21 a is formed in which a plurality of places are notched. 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.

  It is preferable to form 4 to 8 retainer tip notches 21a. In this case, the retainer tip notch portion 21a can be provided over the entire circumference of the retainer tip portion 21, and the retainer tip portion 21 is easily bent over the entire circumference. As shown in FIG. 9, the convex portion 15 of the filler pipe 10 is fitted into the retainer tip notch portion 21a. The convex portion 15 can be fitted into the retainer tip notch portion 21a and can be reliably held, and the retainer 20 can be more reliably fixed.

After the attachment, as shown in FIG. 8, the outer surface of the retainer tip 21 is elastically brought into contact with the inner surface of the filler pipe 10 of the inlet portion 12 of the filler pipe 10, and the retainer attachment portion 22 becomes the filler pipe 10. The retainer 20 can be stably held inside the filler pipe 10 in combination with the contact with the flange portion 14.

  As shown in FIGS. 1 to 4, a spiral retainer screw portion 24 is formed from the root of the retainer tip 21 to the retainer mounting portion 22. By screwing the retainer screw portion 24 into the screw portion 13 of the filler pipe 10, the retainer 20 can be attached to the inside of the inlet portion 12 of the filler pipe 10.

  When the retainer 20 is screwed into the threaded portion 13 of the filler pipe 10, the retainer 20 can be screwed along the threaded portion 13 in the same direction as the axial direction of the filler pipe 10. 20, the retainer extending wall 27 does not interfere with the inner surface of the filler pipe 10, and the shape of the retainer extending wall 27, which will be described later, can be increased. Can be prevented.

  In the retainer screw portion 24, the portion where the retainer tip notch portion 21a is formed is notched, and as shown in FIGS. 1 and 4, the retainer tip notch portion 21b is located near the retainer tip notch portion 21a. Is formed. When the convex portion 15 of the filler pipe 10 is fitted into the retainer tip notch portion 21a, the retainer tip projection portion 21b can reliably hold the convex portion 15, and the retainer 20 can be more reliably held in the filler pipe 10. Can be fixed to.

A retainer mounting portion 22 is integrally formed from the retainer tip portion 21. When the retainer mounting portion 22 is mounted inside the inlet portion 12 of the filler pipe 10, the retainer opening 23 is held at a predetermined position of the filler pipe 10. The tip of the fuel gun can be held at the retainer opening 23 so that the fuel ejection direction can be made constant.

  As shown in FIG. 1, the retainer mounting portion 22 has a retainer mounting protrusion 25 and a retainer mounting claw portion 26 on the side of the retainer opening 23 relative to the portion where the retainer screw portion 24 is formed. A plurality of retainer mounting protrusions 25 and retainer mounting claws 26 are formed on the outer periphery of the retainer mounting portion 22.

  The retainer mounting claw 26 is formed so as to be displaced in the circumferential direction from the portion where the retainer mounting projection 25 is formed, and the retainer mounting claw 26 is slightly more axial in the retainer opening 23 than the retainer mounting projection 25. Formed on the side. When the retainer 20 is attached to the filler pipe 10, the flange portion 14 of the filler pipe 10 is engaged between the retainer attachment projection 25 and the retainer attachment claw 26 to fix the retainer 20 to the filler pipe 10. Can do.

  As shown in FIG. 5, a retainer opening 23 is formed from the retainer mounting portion 22, and the retainer opening 23 is formed to be inclined with respect to the central axis of the retainer 20. Therefore, when the tip of the fuel gun is held by the retainer opening 23, the tip of the fuel gun can be brought into contact with the inner surface of the filler pipe 10, so that the fuel is smoothly supplied from the fuel gun along the inner surface of the filler pipe 10. Can be injected into.

A retainer extending wall 27 is provided in the distal direction from the retainer mounting portion 22. As shown in FIG. 8, when the retainer 20 is attached to the filler pipe 10, the retainer extending wall 27 faces the breather tube opening 32 of the breather tube 30 attached to the inlet portion 12 of the filler pipe 10. Is formed.
For this reason, the retainer extending wall 27 covers the tip of the refueling gun, the fuel droplets and gas flowing from the breather tube 30 during refueling are applied to the retainer extending wall 27, and the droplets flow downward. Thus, it is possible to prevent the droplet from hitting an auto stop sensor attached to the tip of the fuel gun.

Next, a method for attaching the retainer 20 to the filler pipe 10 will be described with reference to FIGS.
As shown in FIG. 6, when the retainer 20 is attached to the filler pipe 10, the retainer attachment projection 25 and the retainer attachment claw 26 of the retainer 20 are screwed through the threaded portion 13 of the filler pipe 10. At this time, even if the retainer 20 is slightly inclined in the axial direction of the filler pipe 10, the retainer extending wall 27 is rarely in contact with the inner surface of the filler pipe 10 at the initial insertion.

Further, as shown in FIG. 7, the retainer screw portion 24 is passed through the screw portion 13 of the filler pipe 10. At this time, the screws of the retainer screw portion 24 and the screw portion 13 of the filler pipe 10 are screwed together, and the retainer 20 does not tilt in the axial direction of the filler pipe 10. For this reason, the retainer extending wall 27 rarely contacts the inner surface of the filler pipe 10.

Therefore, the retainer extending wall 27 can be made larger than the conventional retainer extending wall 27, and the fuel droplets and gas flowing in from the breather tube 30 during refueling can be reliably stopped by the retainer extending wall 27. it can.
In the conventional structure, for example, when the length of the retainer extending wall 27 is 30 mm, the curvature diameter of the curved retainer extending wall 27 can be increased from about 30 mm to about 36 mm and can be brought close to the breather tube opening 32. .

After the retainer threaded portion 24 has passed through the threaded portion 13 of the filler pipe 10, as shown in FIG. 8, the retainer mounting projection 25 and the retainer mounting claw 26 connect the flange portion 14 of the filler pipe 10. The retainer tip 21 can be elastically brought into contact with the inner surface of the filler pipe 10 so that the retainer 20 can be fixed.
At this time, as shown in FIG. 9, the retainer tip protrusion 21 b of the retainer tip notch 21 a sandwiches the convex portion 15 of the filler pipe 10 to prevent rotation.

DESCRIPTION OF SYMBOLS 10 Filler pipe 12 Inlet part 13 Thread part 20 Retainer 21 Retainer front end part 21a Retainer front end notch 21b Retainer front end projection part 22 Retainer attachment part 23 Retainer opening part 24 Retainer screw part 24
27 Retainer extension wall

Claims (6)

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 filler pipe is formed inside the inlet part of the filler pipe, and a retainer that holds the tip of the fuel gun is attached to the filler pipe. Forming the convex part of the pipe,
The retainer includes a retainer tip portion that is held in contact with an inner surface of the inlet portion of the filler pipe, a retainer mounting portion that extends from the retainer tip portion and is attached to the inner surface of the inlet portion of the filler pipe, and the retainer. A retainer opening that holds the tip of the fuel gun and feeds fuel into the filler pipe,
A spiral retainer screw portion is formed from the root of the retainer tip portion to the retainer mounting portion, and a plurality of retainer tip notches are formed in the retainer tip portion in the axial direction. The retainer tip notch portion The filler pipe is characterized in that the convex part of the filler pipe is fitted to the filler pipe.   2. The filler pipe according to claim 1, wherein the retainer threaded portion is formed by notching a portion of the retainer tip notch portion and forming a retainer tip protrusion at a portion adjacent to the retainer tip notch portion.   The filler pipe according to claim 1 or 2, wherein 4 to 8 retainer tip notches are formed.   The filler pipe according to any one of claims 1 to 3, wherein the retainer opening is formed to be inclined with respect to a central axis of the retainer.   The filler pipe as described in any one of Claim 1 thru | or 4 which provided the retainer extension wall in the front end direction from the said retainer attaching part.   The filler pipe according to claim 5, wherein the retainer extending wall is formed at a portion facing an opening of a breather tube attached to an inlet of the filler pipe.