JP2014189267A - Filler pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler pipe 10 which enables easy manufacturing and weight reduction.SOLUTION: A filler pipe 10 pours a fuel into a fuel tank from a vehicle body oil supply port formed on a vehicle body outer surface. In the filler pipe 10, a retainer 20 for holding a tip part 31 of an oil supply gun 30 is attached to an inlet part 12 of the filler pipe 10. The retainer 20 includes: a retainer attachment part 22 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, holds the tip part 31 of the oil supply gun 30, and sends the fuel into the filler pipe 10. A part of the retainer opening part 23 extends to provide a retainer opening extension part 27, and the retainer opening extension part 27 is formed bending in a center direction of the retainer opening part 23.

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. 6, a filler pipe 110 is attached to inject fuel from a vehicle body filler port provided in the vehicle body into a vehicle 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 131 of the fuel gun 130 is held at the front end portion of the retainer 120 so that the front end portion 131 of the fuel gun 130 always faces the same direction.

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.
In addition, in order to hold the tip 131 of the fuel gun 130, the pipe diameter of the tip of the retainer 120 needs to be approximately equal to the nozzle diameter of the tip 131 of the fuel gun 130, and the tip 131 of the fuel gun 130. It took a lot of time to insert and take out.

  In addition, as shown in FIG. 7, there is one in which an inclined surface 214 is provided on the inner surface of the filler pipe 210 so as to be inclined in the direction of the curved portion 213 slightly upstream of the curved portion 213 of the filler pipe 210 (for example, Patent Document 2). When fuel is injected from the fuel supply gun 230 through the inlet 211 of the filler pipe 210, the flow of the fuel is changed by the inclined surface 214 and flows along the curved portion 213, so that the flow of the fuel becomes smooth.

  However, in this case, it is necessary to form the inclined surface 214 together with the curved portion 213 so as to protrude on the inner surface side of the filler pipe 210, and the molding of the filler pipe 210 is complicated, and the molding process is increased. Cost increases.

JP 2009-18755 A JP 2007-326522 A

  Therefore, the present invention seeks to provide a filler pipe that is easy to manufacture and has a reduced weight.

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.
Attach a retainer that holds the tip of the oil gun to the inlet of the filler pipe,
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, holds the distal end portion of the fuel gun, and feeds fuel into the filler pipe. A retainer opening extending portion is provided by extending a part of the opening, and the retainer opening extending portion is a filler pipe formed by bending in the center direction of the retainer opening.

  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.

  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 part of the retainer opening was extended to provide a retainer opening extension, and the retainer opening extension was bent in the center direction of the retainer opening. For this reason, at the portion of the retainer opening extending portion, the tip of the fuel gun can be stopped so that it does not go too far into the filler pipe from the retainer opening, and the fuel ejection direction is set at a predetermined location of the filler pipe. Can be directed to flow along the wall.

  The present invention of claim 2 is the filler pipe formed by bending the retainer opening extending portion in the direction of the curved portion closest to the retainer opening of the filler pipe.

  In the present invention of claim 2, since the retainer opening extending portion is formed by bending in the direction of the curved portion closest to the retainer opening of the filler pipe, the fuel injected from the fuel gun is retained by the retainer opening extending portion. Flows along the curved portion closest to the retainer opening of the filler pipe, and flows along the curved portion.Therefore, the fuel flow is smooth, and the fuel does not flow smoothly and clogs and flows backward. There is no stopping.

  The present invention of claim 3 is a filler pipe in which a bending angle of the retainer opening extending portion is 10 to 45 degrees.

  In the present invention of claim 3, since the bending angle of the retainer opening extending portion is 10 to 45 degrees, the tip of the oil gun can be stopped by contacting the retainer opening extending portion. The tip can be stopped so that it does not go too far into the filler pipe from the retainer opening, and the fuel injection direction can flow out along the wall of the filler pipe without disturbing the flow of the fuel. Can lead to.

  The present invention of claim 4 is the filler pipe in which the length of the retainer opening extending portion in the extending direction is 10 to 20 mm.

  In the present invention of claim 4, since the length in the extending direction of the retainer opening extending portion is 10 to 20 mm, the tip end portion of the fuel gun can be reliably stopped by the retainer opening extending portion, and the fuel It is possible to guide the gas so as to flow out along the wall of a predetermined portion of the filler pipe by changing the jet direction.

  The present invention according to claim 5 is a filler pipe in which the size of the opening diameter of the retainer opening is slightly larger than the outer diameter of the tip of the fuel gun.

  According to the fifth aspect of the present invention, since the opening diameter of the retainer opening is slightly larger than the outer diameter of the tip of the fuel gun, the tip of the fuel gun is securely held by the retainer opening without shaking. The fuel ejection direction can be maintained in a predetermined direction.

  According to a sixth aspect of the present invention, the retainer opening is a filler pipe having an upper surface formed flat and a lower surface formed on an inclined surface.

  In the present invention of claim 6, the retainer opening is formed such that the upper side surface is flat and the lower side surface is formed as an inclined surface. The tip of the fuel gun can reach the tip of the retainer opening, the insertion is smooth, and the tip of the fuel gun can be stably held by the inclined surface on the lower side, and the direction of fuel injection Can be stabilized.

  According to a seventh aspect of the present invention, the retainer opening is a filler pipe whose lower surface is formed in parallel along the inner surface of the filler pipe.

  In the seventh aspect of the present invention, since the retainer opening has the lower surface formed in parallel along the inner surface of the filler pipe, the tip of the fuel gun can be stably held on the lower surface of the retainer opening. .

When the retainer root of the retainer is installed inside the filler pipe inlet, the retainer opening is held in place, the tip of the fuel gun is held at the retainer opening, and the direction of fuel injection is controlled. Can be constant.
A part of the retainer opening is extended to provide a retainer opening extending part, and the retainer opening extending part is formed by bending in the center direction of the retainer opening. The tip of the gun can be stopped so as not to go too far into the filler pipe from the retainer opening, and the fuel ejection direction can be guided to flow out along the wall of a predetermined portion of the filler pipe.

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. The embodiment of the present invention is shown and is a sectional view of a retainer. FIG. 3 is a cross-sectional view showing a flow of fuel when an oil supply gun is inserted into an inlet of a filler pipe according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is a cross-sectional view when an oil supply gun having a short tip is inserted into an inlet of a filler pipe. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is a cross-sectional view when a fuel gun with a long tip is inserted into an inlet of a 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 part which attached the retainer to the inlet_port | entrance part of the other conventional filler pipe.

  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 fuel tank for an automobile from a vehicle body filler port provided in the body of the automobile. 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. As shown in FIG. 3, a curved portion 13 in which the filler pipe 10 is curved is formed slightly behind the inlet portion 12. Since the filler pipe 10 is attached along the vehicle body from the vehicle body refueling port to the fuel tank, a plurality of curved portions 13 are formed.

Next, the retainer 20 will be described with reference to FIG.
The tip of the retainer 20 covers the tip of the inlet 11 of the filler pipe 10, and a retainer injection edge 21 that opens to the vehicle body fuel filler is formed. The retainer injection edge 21 is formed such that the cross section is bent in a square shape toward the outside. Since the retainer injection edge 21 covers the tip of the injection port 11 of the filler pipe 10, the retainer 20 is fixed at the injection port 11 so as not to enter the interior of the filler pipe 10, and the injection port 11 and the retainer injection edge 21. It is possible to prevent the fuel from leaking from between.

  The retainer mounting portion 22 is integrally formed in a cylindrical shape from the retainer injection edge 21. When the retainer 20 is inserted into the inlet portion 12 of the filler pipe 10, the retainer injection edge 21 is locked to the tip of the injection port 11, and the outer surface of the retainer mounting portion 22 is the inner surface of the inlet portion 12 of the filler pipe 10. The retainer 20 is stably held. When the filler pipe 10 and the retainer 20 are made of metal, the inlet 11 and the retainer injection edge 21 can be welded and fixed. Moreover, when the filler pipe 10 and the retainer 20 are formed of a synthetic resin, both can be fixed or bonded with an adhesive.

  As shown in FIG. 2, the retainer mounting portion 22 can be formed with a helical retainer screw portion 22a that protrudes inward. When the inlet 11 of the filler pipe 10 is closed by a tank cap (not shown), the tank cap can be attached by fitting the screw portion provided on the outer periphery of the tank cap into the retainer screw portion 22a of the retainer mounting portion 22. it can. When attaching a unit with a flap instead of a tank cap, the retainer 20 can be installed at the end of the unit with a flap, and the amount of fuel gun 30 inserted or the direction of fuel flow can be made constant.

  A retainer slope portion 28 is formed on the upper side of the retainer mounting portion 22. The retainer slope portion 28 is formed in an upper portion of the retainer 20 when the filler pipe 10 is attached to the vehicle body, and a lower portion is formed continuously from the retainer attachment portion 22 and flat. For this reason, the retainer 20 is deformed so that the diameter of the upper portion is gradually reduced and the entire diameter is gradually reduced while the lower portion is left as it is. This facilitates insertion of the fuel gun 30 as will be described later.

  A retainer opening cylinder portion 29 having a diameter smaller than that of the retainer mounting portion 22 is formed continuously from the retainer slope portion 28. A retainer opening 23 is formed at the tip of the retainer opening cylinder 29. In the retainer opening 23, a retainer opening upper side portion 24 is formed in an upper portion where the retainer inclined surface portion 28 is formed. Is formed.

  The opening diameter of the retainer opening 23 is preferably slightly larger than the outer diameter of the tip 31 of the fuel gun 30. In this case, the tip 31 of the fuel gun 30 can be easily inserted, and the gap between the tip 31 of the fuel gun 30 and the retainer opening 23 can be reduced, and the tip of the fuel gun 30 can be reduced. 31 can be reliably held by the retainer opening 23 without shaking, and the fuel ejection direction can be maintained in a predetermined direction.

  In the lower part of the retainer opening 23 opposite to the side where the retainer slope part 28 is formed, a retainer opening lower part 25 is formed continuously to the retainer opening cylinder part 29, and the retainer opening lower part 25 is The retainer opening cylinder portion 29 is formed longer than the retainer opening upper side portion 24. A retainer opening extending portion 27 is formed so as to extend further from the tip of the retainer opening lower side portion 25. The retainer opening extending portion 27 is formed by bending from the retainer opening lower side portion 25 in the center direction of the retainer opening portion 23 (right direction in FIG. 2).

  The bending direction of the retainer opening extending portion 27 is formed by bending in the direction of the curved portion 13 closest to the retainer opening 23 of the filler pipe 10. Therefore, as will be described later, the fuel injected from the distal end portion 31 of the fuel gun 30 hits the wall of the curved portion 13 closest to the retainer opening 23 of the filler pipe 10 along the retainer opening extending portion 27. It can flow and can flow smoothly.

  The bending angle of the retainer opening extending portion 27 is preferably 10 to 45 degrees. In this case, the distal end portion 31 of the fuel gun 30 can be stopped by contacting the retainer opening extending portion 27, and the distal end portion 31 of the fuel gun 30 enters the depth of the filler pipe 10 from the retainer opening portion 23. In addition to stopping the flow of the fuel, it is possible to guide the fuel jet direction so as to smoothly flow out along the wall of the predetermined portion of the filler pipe 10 without disturbing the flow of the fuel.

  The length of the retainer opening extending portion 27 in the extending direction is preferably 10 to 20 mm. In this case, even if the refueling gun 30 is formed long, the distal end portion 31 can be reliably stopped by the retainer opening extending portion 27 and the direction of fuel injection is directed to a predetermined wall of the filler pipe 10. Can be led to flow along.

Next, a case where fuel is injected by inserting the fuel gun 30 into the inlet 11 of the filler pipe 10 will be described with reference to FIGS.
As described above, the inlet 11 of the filler pipe 10 is attached to the vehicle body filler port and opens to the outer surface of the vehicle body. A retainer 20 is attached to the inlet 12 of the filler pipe 10, and a retainer injection edge 21 is attached so as to cover the tip of the injection port 11.

  When the fuel gun 30 is inserted into the inlet 11 of the filler pipe 10, the tip 31 of the fuel gun 30 enters along the inner surface from the retainer injection edge 21 of the retainer 20 and reaches the retainer opening 23. At this time, the tip 31 of the fuel gun 30 can reach the tip of the retainer opening 23 along the retainer slope portion 28 on the upper side of the retainer 20, the insertion is smooth, and the lower side of the retainer opening on the lower side 25, the tip 31 of the fuel gun 30 can be stably held.

  Since the opening diameter of the retainer opening 23 is slightly larger than the outer diameter of the tip 31 of the fuel gun 30, the tip 31 of the fuel gun 30 can be reliably held by the retainer opening 23. The direction of the portion 31 is stable, and the fuel ejection direction can be maintained in the direction of the curved portion 13 of the filler pipe 10.

  At this time, the tip portion 31 of the fuel gun 30 is a portion of the retainer opening 23, and the insertion of the tip portion 31 is stopped, and the direction of the fuel injected from the tip portion 31 is determined. At this time, the fuel injection direction is directed toward the curved portion 13 of the filler pipe 10 closest to the retainer opening 23. Further, even when the tip 31 does not reach the retainer opening extending portion 27, the fuel injected from the tip 31 is further ejected by the retainer opening extending portion 27 in the direction of the curved portion 13 of the filler pipe 10. Can be attached.

  Then, the injected fuel flows along the curved portion 13 of the filler pipe 10 as shown by the arrow in FIG. 3 and can smoothly flow down below the filler pipe 10. Therefore, at the time of fuel injection, the fuel does not flow smoothly in the filler pipe 10 and clogs and flows backward, and the auto-stop sensor attached to the tip 31 of the fuel gun 30 determines that the fuel is full, Fuel injection never stops halfway

  The shape of the retainer opening cylindrical portion 29, the retainer slope portion 28, and the retainer opening portion 23 of the retainer 20 holds the tip portion 31 of the fuel gun 30, and determines the fuel injection direction. It is determined for each vehicle according to the position and shape of the bending portion 13 of the pipe 10.

In addition, depending on the length of the fuel gun 30, the retainer 20 can properly stabilize the fuel injection direction.
For example, as shown in FIG. 4, when the length of the fuel gun 30 is long, when the fuel gun 30 is inserted into the retainer 20, the tip 31 of the fuel gun 30 slightly protrudes from the retainer opening 23. In this case, since the opening diameter of the retainer opening 23 is only slightly larger than the outer diameter of the tip 31 of the fuel gun 30, the tip 31 of the fuel gun 30 contacts the retainer opening extension 27. In contact, it can no longer be inserted inside. Since the retainer opening extending portion 27 is bent at 10 to 45 degrees, it is possible to stop the front end portion 31 from entering. For this reason, the fuel injection direction of the tip 31 of the fuel gun 30 is stabilized.

  As shown in FIG. 5, when the length of the fuel gun 30 is short, when the fuel gun 30 is inserted into the retainer 20, the tip 31 of the fuel gun 30 stops at the retainer opening 23. In this case, the fuel ejected from the distal end portion 31 of the fuel gun 30 contacts the retainer opening extending portion 27 and bends in the direction. Since the retainer opening extending portion 27 has a length of 10 to 20 mm, the fuel flows in the direction of the curved portion 13 of the filler pipe 10 without hindering the fuel flow, and the fuel flow is stabilized. The fuel injection direction of the tip 31 of the fuel gun 30 is stabilized.

DESCRIPTION OF SYMBOLS 10 Filler pipe 11 Inlet 13 Curved part 20 Retainer 22 Retainer attachment part 23 Retainer opening part 27 Retainer opening extension part 28 Retainer slope part 30 Oil supply gun 31 Tip part

Claims (7)

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,
Attach a retainer that holds the tip of the oil gun to the inlet of the filler pipe,
The retainer has a retainer attachment 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. And a retainer opening extending portion is provided by extending a part of the retainer opening, and the retainer opening extending portion is formed by bending in the center direction of the retainer opening. Filler pipe.   The filler pipe according to claim 1, wherein the retainer opening extending portion is formed by bending in a direction of a curved portion closest to the retainer opening of the filler pipe.   The filler pipe according to claim 1 or 2, wherein a bending angle of the retainer opening extending portion is 10 to 45 degrees.   The filler pipe according to any one of claims 1 to 3, wherein the length of the retainer opening extending portion in the extending direction is 10 to 20 mm.   The filler pipe according to any one of claims 1 to 4, wherein a size of an opening diameter of the retainer opening is slightly larger than an outer diameter of a tip portion of the fueling gun.   The filler pipe according to any one of claims 1 to 5, wherein the retainer opening has an upper surface formed flat and a lower surface formed on an inclined surface.   The filler pipe according to any one of claims 1 to 6, wherein a lower side surface of the retainer opening is formed in parallel along the inner surface of the filler pipe.

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