JP2012183887A - Guide device for oil filling nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent careless disengagement, even if an excessive impact is received, by improving incorporation operability into an oil filling opening side tube section.SOLUTION: A guide device 3 for an oil filling nozzle fixed inside the oil filling opening side tube section 10 and serving as a guide when an oil filling nozzle 4 is inserted into a filler pipe 11 from the tube section 10, includes a substantially tube-shaped body 30 arranged on the innermost side of the tube section 10, and an introducing section 31 arranged on one end side of the body and capable of centering the oil filling nozzle 4. The body 30 includes a guide groove 36 arranged in the tube longitudinal direction of the outer circumference, and a lock groove 37 arranged in the tube circumferential direction from the guide groove. The guide device is inserted into the tube section while the guide groove 36 is fitted to a protrusion 14 arranged on an inner surface of the tube section 10, and can be installed in the tube section 10 by engaging the lock groove 37 with the protrusion 14 when rotated.

Description

  The present invention relates to an improvement of a fuel nozzle guide device that constitutes a fuel nozzle insertion portion and guides insertion of a fuel nozzle into a filler pipe.

  FIG. 7 shows a fuel filler structure of a vehicle disclosed in Patent Document 1, wherein (a) shows a state in which a fuel nozzle is inserted into a fuel pipe side cylinder portion of a fee pipe, and (b) guides the fuel nozzle. A nozzle guide (corresponding to the oil supply nozzle guide device of the present application) is shown. In the structure shown in the figure, the fuel port side cylinder portion 6 having the expanded portion 5 at the upper end into which the fuel nozzle Nz is inserted, and the fuel F that has been reduced in diameter at the tip of the cylinder portion 6 by drawing and discharged from the fuel nozzle Nz. A filler tube 3 that forms a supply path for supplying fuel to the fuel tank side, a vent tube 4 that is connected to the outer periphery of the cylinder portion 6 and discharges the fuel vapor V of the fuel tank, and an oil supply nozzle Nz provided in the cylinder portion 6 And a nozzle guide 10 for guiding the gas into the filler pipe 3.

  The nozzle guide 10 includes divided bodies 11 and 12. The divided body 11 is provided with a movable claw 11b and a wall portion 11c, and the divided body 12 is provided with a pressing portion 12e. The movable claw 11b is pressed and deformed by the pressing portion 12e when the divided body 11 and the divided body 12 are relatively moved. On the other hand, the cylindrical portion 6 is provided with an engaged portion 2 c formed by a step edge of the cylindrical body 2. Then, the nozzle guide 10 relatively moves the divided body 11 with the movable claw 11b and the divided body 12 with the pressing part 12e within the cylindrical part 6, and the movable claw 11b is pressed and displaced by the pressing part 12e. By being engaged with the engaging portion 2c, it is fixed in the cylinder.

  That is, when the nozzle guide 10 is assembled, first, the divided body 11 is inserted into the inner side of the cylindrical portion 6, and then the divided body 12 is inserted into the cylindrical portion 6. In this case, when the divided body 12 is inserted into the cylindrical portion 6, the divided bodies 11 and 12 are relatively close to each other in the insertion direction I, and the movable claw 11 b and the wall portion 11 c of the divided body 11 are notched in the divided body 12. It is inserted into the part 12d. At this time, since the widened portions 12f and 12g on the open side of the notch 12d serve as a guide for the movable claw 11b, the movable claw 11b can be smoothly moved to the notch 12d. And the movable nail | claw 11b and the wall part 11c are extruded to the cylinder outer side by the inner wall part 12e of the notch part 12d. As a result, the locking projection 11d of the movable claw 11b and the tip end portion of the side wall portion 11g of the wall portion 11c are engaged with the engaged portion 2c, and the divided body 11 is engaged in the cylindrical portion 6. At the same time, the divided bodies 11 and 12 push the divided body 12 in the insertion direction I, so that the opening 12h on the divided body 11 side and the projection 12i on the divided body 12 side constituting the engagement mechanism 13 are formed. It is integrated by engagement.

JP 2010-188867 A

  In the nozzle guide structure described above, the divided bodies are engaged and integrated by the engagement mechanism 13 in the cylindrical portion 6 and the divided body 11 is engaged and fixed to the cylindrical portion 6. The assembly workability is poor. In addition, the engagement and fixing with respect to the cylindrical portion 6 is performed by using a circumferential detent using the end portion of the vent tube 4 and a stepped portion of the cylindrical portion 6 at the distal end portion of the engaging projection 11d of the movable claw and the side wall portion 11g of the wall portion. Since it is only latched to the engaged portion 2c, which is the edge, there is a risk of disengagement or rattling when receiving an excessive impact such as a rear-end collision, etc., and welding work is essential, positioning workability and Combined, it was a cumbersome assembly work.

  The object of the present invention is to eliminate the above-mentioned problems, simplify the structure, perform the work of assembling into the oil filler side cylinder part with one touch without requiring welding work, etc. and once attached state Therefore, it is intended not to release the engagement even if an excessive impact is received.

  In order to achieve the above object, the present invention provides a guide device for an oil supply nozzle that is fixed to the inside of a cylinder portion that constitutes an oil supply port and serves as a guide when the oil supply nozzle is inserted into the filler pipe from the cylinder portion on the oil supply port side. The guide device includes a substantially cylindrical main body disposed on the back side of the cylindrical portion, and an introduction portion provided on one end side of the main body and capable of centering the oil supply nozzle. A guide groove provided in the cylinder longitudinal direction and a lock groove provided in the cylinder circumferential direction from the guide groove, and the guide groove is fitted to a protrusion provided on the inner surface of the cylinder portion When inserted into the cylinder part and rotated, the lock groove is engaged with the projection so that the cylinder part can be mounted.

The present invention as described above is more preferably embodied as specified in claims 2-5.
(A) a temporary fixing recess provided in the vicinity of the connection between the guide groove and the lock groove and detachably engaged with the protrusion when the guide device is inserted into the cylindrical portion; (Claim 2).
(A) The guide groove and the lock groove are provided at two or more locations on the main body (Claim 3).

(C) The main body has a cylindrical portion from the opening of the vent tube and the 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. It is the structure which has the flange part protruded by the lower periphery inserted in the part back side (Claim 4).
(D) The introduction part is constituted by a plurality of wing parts provided at intervals (Claim 5).

  According to the first aspect of the present invention, the guide device is excellent in terms of handleability, built-in operability, and stable engagement that cannot be removed, and can be manufactured lightly and inexpensively by integrally molding resin as in the embodiment. That is, since the guide device of the present invention is configured by a single member, it is easy to handle and the manufacturing cost can be reduced. As illustrated in FIGS. 2 and 3, the guide groove is fitted to the protrusion in the fuel filler side cylinder portion. In this state, it is inserted into the cylinder part, and the protrusion is engaged and fixed from the guide groove to the lock groove by rotation in the cylinder inner circumferential direction, so that the attachment work to the cylinder part can be performed by one-touch operation, and the engagement fixing Is excellent in that the locking groove is provided in a direction crossing the pulling direction of the guide device, so that the locking groove can be reliably removed.

  According to the second aspect of the present invention, when the guide device is inserted into the tube portion with the guide groove fitted to the tube portion side protrusion, the protrusion engages with the recessed portion and is temporarily fixed. For example, the temporary fixing is performed by confirming the completion of the insertion of the guide device with respect to the cylindrical portion by a clicking sound when the protrusion and the recess portion are engaged, or by rotating the guide device in the circumferential direction of the cylindrical portion by the confirmation. Thus, it is possible to know the timing for engaging and fixing the protrusions, so that the operability of assembling into the cylindrical portion can be obtained well.

  In the third aspect of the invention, the guide device is engaged and fixed to the cylindrical portion at a plurality of positions by the lock grooves and the protrusions, so that stable engagement that cannot be removed once assembled is more reliably obtained. To be able to.

  In the fourth aspect of the invention, the fuel paper raised from the vent tube is easily flowed to the outside air side from the gap formed between the opening of the vent tube and the opposed portion of the main body in the cylinder portion on the fuel filler port side. As a result, it is possible to make it difficult to be introduced into the fuel supply passage of the cylinder portion, that is, the filler pipe.

  In the invention of claim 5, since the introduction part of the guide device is constituted by a plurality of wing parts, the gap formed between the opening of the vent tube and the opposing part of the main body of the fuel paper raised from the vent tube It can be ensured that the air flows through the space between the wings to the outside atmosphere side.

It is sectional drawing which shows typically the insertion port side cylinder part and the insertion part of an oil supply nozzle which were equipped with the guide apparatus of the form example. It is a disassembled perspective view which shows typically the relationship between the oil filler side cylinder part of 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. The guide device is shown, (a) is a front view, (b) is a side view, and (c) is a top view. 4 shows details of the guide device of FIG. 4, (a) is an enlarged sectional view taken along line AA in FIG. 4, and (b) is an enlarged sectional view taken along line BB in FIG. 4. The oil supply port side cylinder part which equipped with the said guide apparatus is shown, (a) is a front view, (b) is a side view. The structure of patent document 1 is shown, (a) shows the internal structure of the oil supply nozzle insertion part in the state which inserted the oil supply nozzle, (b) is a perspective view which shows a guide apparatus (nozzle guide).

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

(Structure) The oil supply nozzle guide device 3 of the embodiment constitutes an oil supply nozzle insertion portion as shown in FIG. 1, is engaged and fixed inside the oil supply side cylinder portion 10, and the oil supply nozzle 4 is connected to the oil supply side. It is inserted and guided into the filler pipe 1 (11) whose diameter has been reduced by a narrowing process at the bottom of the cylindrical portion 10. The structural features include 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. 10 is provided with a guide groove 36 provided on the outer periphery and extending in the cylinder longitudinal direction, and a lock groove 37 connected to one end of the guide groove 36 and extending in the cylinder peripheral direction. The guide groove 36 is inserted into the cylindrical portion and can be attached to the cylindrical portion 10 by engaging the lock groove 37 with the protrusion 14.

  The filler pipe 1 is a pipe for supplying fuel to the fuel tank, and refers to a pipe portion excluding the filler port side cylinder portion 10 having a large diameter, and a case including the cylinder portion 10. There is, but any may be sufficient. As shown in FIG. 1 to FIG. 3, the filler port side cylinder portion 10 is edged with a flange-like flange portion 12 as shown in FIGS. 1 to 3, and is connected to a screw portion 13 provided around the lower side and a side surface. The vent tube 2 for discharging the fuel vapor and the pair of protrusions 14 projecting from the inner surface of the tube portion 10 around the tube portion substantially the same as the outlet side end portion 2a of the vent tube 2. Both protrusions 14 are provided to face each other.

  The guide device 3 is made of an oil-resistant synthetic resin molded body in which the main body 10 and the introducing portion 31 are integrally molded. The main body 10 includes flange portions 32 and 33 projecting from the outer periphery of the upper and lower ends, and a plurality of (two in this example) pedestal portions 35 projecting to be integrated with the outer periphery and the lower end flange portion 33. Is provided. The outer periphery of the main body 10 excluding the flange portions 32 and 33 and the pedestal portions 35 is in a state where a lock groove 37 or an engagement hole 37a, which will be described later, is engaged with the projection 14 and the outlet side end of the vent tube. It becomes the opposing part 30a which opposes the part 2a with a clearance gap.

  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 is expanded in a funnel shape while being connected to the flange portion 32, and the oil supply nozzle 4 is moved into the main body 10 in a state where the tip is pressed against the inner peripheral surface of the cylindrical portion 10 as shown in FIG. 1. Centering is possible.

  Here, in the main body 10, 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 fuel filler side cylinder portion 10. As can be seen from 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 33b for preventing interference with the outlet side end portion 2a of the vent tube and two small cutout portions 33a on the outer periphery.

  Each pedestal 35 has a substantially flat outer periphery and a vertical guide groove 36 extending in the longitudinal direction of the cylinder, and connected to the upper side of the guide groove 36 and extending in the circumferential direction of the cylinder, but a lateral lock groove 37. And are provided. As shown in FIGS. 2 and 5B, the guide groove 36 and the lock groove 37 are elastically displaced at the groove forming portion due to the presence of the cavity 38 provided in the thickness of each pedestal portion 35 from the lower end side flange portion 33. It is possible.

  The guide grooves 36 of each pedestal portion are provided at intervals corresponding to the pair of protrusions 14 described above, and are set to have a groove width that fits with the protrusions 14 with a margin. Each guide groove 36 is also provided continuously in the lower end side flange portion 33, and a temporary fixing recess 36 a is formed on the side of the groove bottom surface away from the flange portion 33. The lock groove 37 is connected to one end of the guide groove 36 so as to be in pressure contact with the protrusion 14, and has an engagement hole 37 a having a deeper groove bottom surface. It can be locked in the hole 37a. 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.

(Assembly Operation) The above guide device 3 is incorporated into the filler port side cylinder portion 10 by a one-touch operation in the following manner. That is, the guide device 3 is inserted into the cylinder portion 10 as it is, with the lower end of the guide groove 36 being positioned corresponding to the protruding portion of each protrusion 14 in the cylinder portion as shown in FIG. Then, the guide device 3 is inserted while elastically distorting each wing portion 34 against the inner peripheral surface upward, and in this case, as shown in FIG. The tentatively moving recesses 36a are engaged with each other by generating a clicking sound, and at the same time, the wings 34 are kept from being pressed against the inner peripheral surface. Thus, the guide device 3 is temporarily fixed at a correct position in the cylindrical portion 10 without visual confirmation.

  Next, as shown by the arrow in FIG. 3, the guide device 3 is rotated in the circumferential direction relative to the cylindrical portion 10 from the temporarily stopped position, whereby each protrusion 14 is locked into the lock groove 36. And elastically engaged (in this example, each protrusion 14 is further engaged with an engagement hole 36a which is deeper in one step of the lock groove 36), thereby fixing the position in the circumferential direction and the pulling direction firmly. Fixed. For this reason, this mounting structure is particularly excellent in impact resistance.

  Moreover, in the above guide apparatus 3, in the attachment state in which each lock groove 36 engaged with the corresponding protrusion 14, the main body 30 is opposed to the outlet side end portion 2a of the vent tube 2 with a gap therebetween, and Since the lower end side flange portion 33 is inserted from the outlet side end portion 2a to the inner side of the cylinder portion, and the introduction portion 31 is composed of a plurality of wing portions 34 provided at intervals 34a, the vent tube 2 is provided. From the gap formed between the opposed portion 30a and the fuel paper V that is lifted from the air through the space 34a between the wing portions 34, the fuel paper V is easily flowed out of the cylindrical portion 10, thereby 10, that is, it can be made difficult to be introduced into the fuel supply passage of the filler pipe 11.

  In addition, the guide apparatus of this invention should just be equipped with the structure specified by a claim, and a detail can be changed and developed with reference to the form example. As an example, in the above-described embodiment, the guide groove 36 and the lock groove 37 communicating with the top of the guide groove 36 are formed at 180 ° opposite positions on the outer periphery of the main body 30, but three or more of these are formed at intervals of 120 °. In addition, the number of protrusions 14 can be made to correspond to the number.

1 ... Filler pipe (10 is the cylinder side of the filler port, 14 is a projection)
2 ... Vent tube (2a is the outlet end)
3 ... Guide device (30 is main body, 31 is introduction part)
32 ... Flange on the upper end side (32a is a notch)
33 ... flange on the lower end side (33a and 33b are notches)
34 ... Wings (34a is the interval)
35 ... pedestal 36 ... guide groove (36a is a recess for temporary fixing)
37 ... Lock groove (37a is an engagement hole)

Claims (5)

In the oil supply nozzle guide device, which is fixed inside the cylinder portion constituting the oil supply port and serves as a guide when the oil supply nozzle is inserted into the filler pipe from the oil supply side cylinder portion,
The guide device includes a substantially cylindrical main body disposed on the back side of the cylindrical portion, and an introduction portion that is provided on one end side of the main body and is capable of centering the fuel supply nozzle. A guide groove provided in the cylinder longitudinal direction, and a lock groove provided in the cylinder circumferential direction from the guide groove,
When the guide groove is fitted to the protrusion provided on the inner surface of the cylinder portion, the guide groove is inserted into the cylinder portion, and when rotated, the lock groove can be engaged with the protrusion and attached to the cylinder portion. A guide device for an oil supply nozzle, characterized in that   It is provided in the vicinity of the connection between the guide groove and the lock groove, and has a temporary fixing recess portion that is detachably engaged with the protrusion when the guide device is inserted into the cylindrical portion. The guide device for an oil supply nozzle according to claim 1.   The guide device for an oil supply nozzle according to claim 1, wherein the guide groove and the lock groove are provided at two or more locations of the main body.   The main body has an opposing 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 the inner side of the cylindrical portion from the opening of the vent tube. The guide device for an oil supply nozzle according to any one of claims 1 to 5, further comprising a flange portion protruding around a lower side to be inserted.   The oil supply nozzle guide device according to any one of claims 1 to 4, wherein the introduction portion includes a plurality of blade portions provided at intervals.

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