WO2012120983A1

WO2012120983A1 - Guide device for fuel filling nozzle

Info

Publication number: WO2012120983A1
Application number: PCT/JP2012/053529
Authority: WO
Inventors: 典秀橘
Original assignee: 株式会社ニフコ
Priority date: 2011-03-04
Filing date: 2012-02-15
Publication date: 2012-09-13
Also published as: JP2012183887A

Abstract

A guide device (3) for a fuel filling nozzle is provided with: a substantially tube-shaped body (30) disposed within a tube section (10) forming a fuel filling opening; and an introduction section (31) provided on one end side of the body and capable of centering the fuel filling nozzle (4). The body is provided with: a guide groove (36) provided in the outer periphery of the body so as to extend in the longitudinal direction of the body; and a lock groove (37) provided so as to extend in the circumferential direction of the body from the guide groove. The guide device is mounted to the tube section in such a manner that the guide device is inserted into the tube section while the guide groove is engaged with a protrusion (14), which is provided on the inner surface of the tube section, and then the guide device is rotated in the circumferential direction to engage the lock groove with the protrusion.

Description

Oiling nozzle guide device

The present invention relates to a guide device for an oil supply nozzle that constitutes an oil supply nozzle insertion portion and guides insertion of the oil supply nozzle into a filler pipe.

7 (a) and 7 (b) show a vehicle filler structure disclosed in Patent Document 1. FIG. Specifically, FIG. 7A shows a state where the oil supply nozzle is inserted into a cylinder portion provided on the filler port side of the filler pipe, and FIG. 7B shows a nozzle guide for guiding the oil supply nozzle. Indicates. The filler pipe 101 shown in FIGS. 7A and 7B has a cylindrical portion 106 having an expanded portion 105 at the upper end into which the oil supply nozzle Nz is inserted, and the diameter of the cylindrical portion 106 is reduced by drawing. A filler tube 103 that forms a supply path for sending the fuel F discharged from the fuel filler nozzle Nz to the fuel tank side, a vent tube 104 that is connected to the outer periphery of the cylinder portion 106 and discharges the fuel vapor V of the fuel tank, and a cylinder portion And a nozzle guide 110 that is provided in 106 and guides the oil supply nozzle Nz into the filler tube 103.

The nozzle guide 110 includes

divided bodies

111 and 112. The divided body 111 is provided with a movable claw 111b and a wall portion 111c, and the divided body 112 is provided with a pressing portion 112e. The movable claw 111b is pressed and deformed by the pressing portion 112e when the divided body 111 and the divided body 112 are relatively moved. On the other hand, the cylindrical portion 106 is provided with an engaged portion 102 c formed at the step edge of the cylindrical body 102. The nozzle guide 110 presses and deforms the movable claw 111b by the pressing portion 112e while relatively moving the divided body 111 provided with the movable claw 111b and the divided body 112 provided with the pressing portion 112e within the cylindrical portion 106. By being engaged with the engaged portion 102c, the tube portion 106 is fixed.

When assembling the nozzle guide 110, first, the divided body 111 is inserted into the inner side of the cylindrical portion 106, and then the divided body 112 is inserted into the cylindrical portion 106. In this case, when the divided body 112 is inserted into the cylindrical portion 106, the divided

bodies

111 and 112 are relatively close to each other in the insertion direction I, and the movable claw 111 b and the wall portion 111 c of the divided body 111 are notched of the divided body 112. It is inserted into the part 112d. At this time, since the widened

portions

112f and 112g on the open side of the notch 112d serve as a guide for the movable claw 111b, the movable claw 111b can be smoothly moved to the notch 112d. And the movable nail | claw 111b and the wall part 111c are extruded to the cylinder outer side by the press part 112e of the notch part 112d. As a result, the locking projection 111d of the movable claw 111b and the tip end portion of the side wall 111g of the wall 111c engage with the engaged portion 102c, and the divided body 111 is engaged in the cylindrical portion 106. At the same time, the

divided bodies

111 and 112 are integrated by the engagement mechanism 113 by pushing the divided body 112 in the insertion direction I in FIG.

Japanese Unexamined Patent Publication No. 2010-188867

In the nozzle guide structure described above, the

divided bodies

111 and 112 are engaged and integrated with each other by the engagement mechanism 113 in the cylindrical portion 106 and the divided body 111 is engaged and fixed to the cylindrical portion 106. Relative positioning of each other is difficult and assembly workability is poor. In addition, the engagement and fixation of the divided body 111 with respect to the cylindrical portion 106 is performed by using the end portion of the vent tube 104 to prevent rotation in the circumferential direction, and the locking projection 111d of the movable claw 111b and the side wall portion 111g of the wall portion 111c. The front end portion is merely hooked on the engaged portion 102 c that is the step edge of the cylindrical portion 106. Therefore, when an excessive impact is received due to a rear-end collision or the like, there is a possibility that the

divided bodies

111 and 112 may be disengaged or the

divided bodies

111 and 112 may rattle. Therefore, welding work is indispensable, and complicated assembly work is required in combination with positioning workability.

The present invention simplifies the structure of the guide device for the oil supply nozzle, and allows the work of assembling the guide device to the cylinder portion on the oil supply port side with a single touch without requiring welding work. It is an object of the present invention to provide a guide device for an oil supply nozzle that does not release the engagement of the guide device even when a strong impact is received.

The present invention provides an oil supply nozzle guide device having the following feature (1).
(1) An oil supply nozzle guide device that is fixed to an inner side of a cylinder part that constitutes an oil supply port and guides the oil supply nozzle when the oil supply nozzle is inserted into the filler pipe from the cylinder part. A substantially cylindrical main body disposed on the back side, and an introduction portion provided on one end side of the main body and capable of centering the oil supply nozzle, wherein the main body is provided in a longitudinal direction of the cylinder on the outer periphery of the main body. A guide groove, and a lock groove provided in the cylinder circumferential direction from the guide groove, and the guide device includes a guide groove provided in an inner surface of the cylinder portion, and the guide groove is fitted into the projection in the cylinder portion. When inserted into the cylinder and rotated in the circumferential direction, the lock groove engages with the protrusion and is attached to the cylindrical portion.

Furthermore, the oil supply nozzle guide device of the present invention preferably has the following features (2) to (5).
(2) It further includes a temporary fixing recess provided in the vicinity of a connection portion between the guide groove and the lock groove and detachably engaged with the protrusion when the guide device is inserted into the cylindrical portion.
(3) The guide groove and the lock groove are provided at two or more locations on the main body, respectively.

(4) The main body further includes an opposed portion facing the opening of the vent tube connected to the cylindrical portion with a gap in a state where the lock groove is engaged with the protrusion, and a lower periphery of the main body And a flange portion that is inserted into the tube portion from the opening of the vent tube.
(5) The introduction part is composed of a plurality of wing parts provided at intervals.

The oil supply nozzle guide device of the present invention is excellent in terms of handleability, built-in operability, and stable engagement that cannot be removed due to the characteristics of (1) above. That is, the guide device according to the present invention is configured with a single member, so that it is easy to handle and the manufacturing cost can be reduced. As shown in FIGS. 2 and 3, the guide groove is fitted into the protrusion in the oil filler side cylinder portion. The guide device can be attached to the cylinder part by one-touch operation because the protrusion is engaged and fixed from the guide groove to the lock groove by rotation in the cylinder inner circumferential direction. Since the groove is provided in a direction intersecting with the drawing direction of the guide device, it is excellent in that the guide device can be reliably removed.

The oil supply nozzle guide device of the present invention further has the feature (2) above, so that when the guide device is inserted into the tube portion with the guide groove fitted to the tube portion side protrusion, the protrusion is temporarily fixed. It is temporarily fixed by engaging with the recess. At the time of this temporary fixing, for example, the completion of insertion of the guide device into the cylindrical portion can be confirmed by a click sound at the time of engagement between the protrusion and the recess portion, and the guide device is rotated in the cylinder circumferential direction by the confirmation and locked. The timing for engaging and fixing the protrusion in the groove can be seen. Therefore, the operability for assembling into the cylinder part can be obtained satisfactorily.

The oil supply nozzle guide device according to the present invention has the above-mentioned feature (3), and the guide device is once assembled by being engaged and fixed at a plurality of locations by lock grooves and protrusions with respect to the cylindrical portion. It becomes impossible to remove from the state, and stable engagement can be obtained more reliably.

The fuel supply nozzle guide device of the present invention further has the feature (4) described above, so that the fuel vapor raised from the vent tube is allowed to flow between the opening of the vent tube and the opposed portion of the main body in the cylinder portion on the fuel supply port side. It is easy to flow from the gap formed between them to the outside atmosphere side. Thereby, it can be made difficult to be introduced into the fuel supply passage of the filler pipe provided on the inner side of the cylinder portion.

The fuel supply nozzle guide device according to the present invention further has the feature (5) above, so that the introduction portion of the guide device is composed of a plurality of wings, so that the fuel vapor raised from the vent tube is removed from the vent tube. From the gap formed between the opening and the opposing portion of the main body, it can flow reliably to the outside atmosphere side through the space between the wings.

It is sectional drawing which shows typically the insertion part of an oil supply port side cylinder part and oil supply nozzle which were equipped with the guide apparatus for oil supply nozzles of embodiment of this invention. It is a disassembled perspective view which shows typically the relationship between the fuel filler side cylinder part shown in FIG. 1, and a guide apparatus. It is a perspective view which shows the attachment operation point to the oil supply port side cylinder part of the said guide apparatus. It is a front view which shows the said guide apparatus. It is a side view which shows the said guide apparatus. It is a top view which shows the said guide apparatus. FIG. 5 is an enlarged cross-sectional view taken along line AA in FIG. FIG. 5 is an enlarged sectional view taken along line BB in FIG. It is a front view which shows the fuel filler opening | mouth side cylinder part with which the said guide apparatus was mounted | worn. It is a side view which shows the oil filler opening | mouth side cylinder part with which the said guide apparatus was mounted | worn. It is sectional drawing which shows the internal structure of the oil supply nozzle insertion part disclosed by patent document 1 in the state by which the oil supply nozzle was inserted. It is a perspective view which shows the guide apparatus (nozzle guide) disclosed by patent document 1. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, after clarifying the main part structure of the guide device, the operation of inserting the filler pipe into the filler port side cylinder part will be described in detail.

(Construction)
As shown in FIG. 1, the guide device 3 for an oil supply nozzle of the present embodiment constitutes an oil supply nozzle insertion portion, and is engaged and fixed inside a cylinder portion 10 provided on the oil supply port side. Is inserted and guided into the filler pipe 1 (11) whose diameter has been reduced by the narrowing process at the lower portion of the cylindrical portion 10. The guide device 3 includes a substantially cylindrical main body 30 disposed on the back side of the cylindrical portion 10 and an introduction portion 31 provided on one end side (upper end side) of the main body 30 and capable of centering the fuel supply nozzle 4. The main body 30 includes a guide groove 36 provided on the outer periphery of the main body 30 and extending in the longitudinal direction of the main body 30, and a lock groove 37 connected to one end of the guide groove 36 and extending in the circumferential direction of the main body 30. The main body 30 is inserted into the cylindrical portion 10 with the guide groove 36 fitted to the protrusion 14 provided on the inner surface of the cylindrical portion 10, and the locking groove 37 is engaged with the protrusion 14, thereby Can be installed.

The filler pipe 1 is a pipe for supplying fuel to the fuel tank. The filler pipe 1 may refer to a pipe portion excluding the cylindrical portion 10 having a large diameter, or may refer to the entire portion including the cylindrical portion 10. is there. As shown in FIGS. 1 to 3, the cylindrical portion 10 is edged with a flange-shaped flange portion 12, and is connected to a side surface with a screw portion 13 provided around the lower side of the flange portion 12. It has a vent tube 2 for discharging the fuel vapor V, and a pair of protrusions 14 projecting on the inner surface of the cylindrical portion 10 around the cylindrical portion which is substantially the same as the outlet side end portion 2a of the vent tube 2. Both protrusions 14 are provided opposite to each other.

The guide device 3 is made of an oil-resistant synthetic resin molded body in which the main body 30 and the introduction portion 31 are integrally molded. The main body 30 includes

flange portions

32 and 33 projecting from the outer periphery of the upper and lower ends, and a plurality of (two in this embodiment) pedestal portions 35 projecting in an integrated state with the outer periphery and the lower end side flange portion 33. And are provided. The outer periphery of the main body 30 excluding the

flange portions

32 and 33 and the pedestal portions 35 is on the outlet side of the vent tube 2 in a state where a lock groove 37 or an engagement hole 37a, which will be described later, is engaged with the projection 14. A facing portion 30a that faces the end 2a with a gap is formed. In this embodiment, since the guide device 3 is integrally molded with resin, it can be manufactured at a low cost and at a low cost.

On the other hand, the introduction part 31 is composed of a plurality of wing parts 34 provided at a predetermined interval 34a. Each wing portion 34 extends in a funnel shape while being connected to the flange portion 32, and the oil supply nozzle 4 is attached to the main body in a state where the tip is pressed against the inner peripheral surface of the cylindrical portion 10 as shown in FIG. 1. 30 can be centered.

In the main body 30, the outer diameter dimensions of the

flange portions

32 and 33 and the pedestal portion 35 are set to be substantially the same as or slightly smaller than the inner dimensions of the cylindrical portion 10. As shown in FIGS. 1 and 2, the upper end side flange portion 32 is provided with a plurality of cutout portions 32 a for releasing the fuel vapor V into the atmosphere. The lower end flange portion 33 is provided with a cutout portion 33a for preventing interference with the outlet side end portion 2a of the vent tube 2 and two small cutout portions 33b on the outer periphery.

Each pedestal 35 is provided with a vertical guide groove 36 whose outer periphery is set to a substantially flat surface and extending in the cylinder longitudinal direction, and a horizontal lock groove 37 connected to the upper side of the guide groove 36 and extending in the cylinder peripheral direction. It has been. As shown in FIGS. 2 and 5B, the guide groove 36 and the lock groove 37 have groove formation portions due to the presence of the cavity 38 provided in the thickness of each pedestal portion 35 from the lower end flange portion 33. Elastic deformation is possible.

The guide groove 36 of each pedestal portion 35 is provided at an interval corresponding to the pair of protrusions 14 and is set to a groove width that fits with the protrusions 14 with a margin. Each guide groove 36 is provided continuously with the lower end side flange portion 33, and a temporary fixing recess 36 a is formed on the bottom surface of the guide groove 36 on the side away from the flange portion 33. The lock groove 37 is connected to one end of the guide groove 36 and is set so as to be in pressure contact with the protrusion 14. The lock groove 37 forms an engagement hole 37 a having a deeper groove bottom, and the protrusion 14 is engaged with the engagement hole 37 a. It is possible to stop. Note that the engagement hole 37 a may be omitted, and in this case, the protrusion 14 is elastically engaged with the lock groove 37.

(Built-in operation)
The guide device 3 according to the present embodiment is assembled into the cylindrical portion 10 by a one-touch operation by the following operation. First, as shown in FIG. 2, with the lower end of the guide groove 36 of the guide device 3 positioned corresponding to the protruding portion of each protrusion 14 in the tube portion 10, the guide device 3 is placed in the tube portion 10. Inserted. Further, the guide device 3 is inserted while each wing portion 34 hits the inner peripheral surface of the cylindrical portion 10 and is elastically distorted upward. At that time, as shown in FIG. 3, each projection 14 moves relatively in the corresponding guide groove 36 and makes a click sound to engage with the temporary fixing recess 36a. Detachment is performed in a state of being pressed against the inner peripheral surface of the cylindrical portion 10. As a result, the guide device 3 is temporarily fixed at a correct position (temporary stop position) in the cylindrical portion 10 without visual confirmation.

Next, as shown by the arrows in FIG. 3, each protrusion 14 enters the lock groove 37 by rotating the guide device 3 in the circumferential direction relative to the cylindrical portion 10 from the temporarily fixed stop position. And elastically engage. Further, in the present embodiment, each protrusion 14 engages with an engagement hole 37 a that is one step deeper in the lock groove 37. As a result, the circumferential position of the guide device 3 is fixed, and the drawing direction is also firmly fixed. For this reason, the mounting structure of this embodiment is particularly excellent in impact resistance.

In the guide device 3 of the present embodiment, the main body 30 faces the outlet side end portion 2a of the vent tube 2 with a gap in an attached state in which each lock groove 37 is engaged with the corresponding protrusion 14. And the lower end side flange part 33 inserted in the cylinder part back | inner side from the exit side edge part 2a, and the introduction part 31 consists of the some wing | blade part 34 provided with the space | interval 34a. Therefore, the fuel vapor V raised from the vent tube 2 is easily flowed out of the cylindrical portion 10 through the gap 34a between the blade portions 34 from the gap formed between the opposed portions 30a. It is possible to make it difficult for the fuel vapor V to be introduced into the inner side of the cylindrical portion 10, that is, into the fuel supply passage of the filler pipe 11.

Although the oil supply nozzle guide device of the present invention has been described in detail and with reference to specific embodiments, those skilled in the art will recognize that various changes and modifications can be made without departing from the spirit and scope of the present invention. It is obvious to As an example, in the present embodiment, two guide grooves 36 and two lock grooves 37 communicating with the top of the guide groove 36 are formed at positions 180 ° opposite to the outer periphery of the main body 30. Alternatively, it is possible to form more than that and to make the number of protrusions 14 corresponding to that.

This application is based on a Japanese patent application (Japanese Patent Application No. 2011-047560) filed on March 4, 2011, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 ... Filler pipe 10 ... Oil supply port side cylinder part 14 ... Protrusion 2 ... Vent tube 2a ... Outlet side edge part 3 ... Guide apparatus 30 ... Main body 31 ... Introduction Portion 32 ... Upper flange 32a ... Notch 33 ...

Lower flange

33a, 33b ... Notch 34 ... Wing 35 ... Base 36 ... Guide groove 36a ... Temporary fixing recess 37 ... Lock groove 37a ... Engagement hole

Claims

An oil supply nozzle guide device that is fixed to the inside of a cylinder portion that constitutes an oil supply port and guides the oil supply nozzle when the oil supply nozzle is inserted into the filler pipe from the cylinder portion,
A substantially cylindrical main body disposed in the cylindrical portion;
An introduction portion provided on one end side of the main body and capable of centering the oil supply nozzle;
The main body includes a guide groove provided in the cylinder longitudinal direction on the outer periphery of the main body, and a lock groove provided in the cylinder peripheral direction from the guide groove,
The guide device is inserted into the cylindrical portion with the guide groove fitted to a protrusion provided on the inner surface of the cylindrical portion, and is engaged in the locking groove with the protrusion by rotating in the circumferential direction. A guide device for an oil supply nozzle mounted on the cylinder portion.
2. The oil supply according to claim 1, further comprising a temporary fixing recess provided in the vicinity of a connection portion between the guide groove and the lock groove and engaged with the protrusion when the guide device is inserted into the cylindrical portion. Nozzle guide device.
3. The oil supply nozzle guide device according to claim 1, wherein the guide groove and the lock groove are provided at two or more locations of the main body, respectively.
The main body further protrudes at an opposed portion facing the opening of the vent tube connected to the cylindrical portion while maintaining a gap with the lock groove engaged with the protrusion, and on the lower periphery of the main body. And the flange part inserted in the cylinder part back | inner side from the opening of the said vent tube, The guide apparatus for oil supply nozzles as described in any one of Claim 1 to 3.
The oil supply nozzle guide device according to any one of claims 1 to 4, wherein the introduction portion includes a plurality of wing portions provided at intervals.