JPH06144500A - Fuel service nozzle - Google Patents

Abstract

PURPOSE:To maintain the transparency of a paper collector by forming a thick- walled flange with high rigidity and a thin-walled bellows having one protruding bar of a continuous transparent synthetic-resin material. CONSTITUTION:In a paper collector 70, a thick-walled flange 71 and a thick- walled cylindrical continuous part 72, which is continuous to the flange 71 to deviate by eccentric quantity and is inclined at 18 deg. are formed. A thin-walled bellows 73 having at least one protruding bar 74, which bellows continues to the continuous part 72, and a thick-walled mounting part 75, which is continuous to the bellows 73 and is inclined at 15 deg., are formed also. Therefore, when the paper collector is pressed to an oil filler port, the thin-walled bellows is transformed but the thick-walled flange 71 and continuous part 72 are not transformed so that a prototype is preserved. Thus, no stress is applied to a transparent synthetic resin material, which can keep transparency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply nozzle of an oil supply device equipped with a vapor recovery device installed in a gas supply station such as a gas station.

[0002]

2. Description of the Related Art The applicant of the present invention has proposed a fueling nozzle in Japanese Patent Application No. 4-214925. This type of oil supply nozzle will be described with reference to the drawings. In FIG. 4, a refueling machine 50 provided with a refueling nozzle N is provided with a case 51 standing upright on the ground, and an underground tank 5 is provided underground.
2 is buried.

An oil supply pipe 53 extends from the underground tank 52 into the case 51. A pump 54 and a flow meter 55 are connected in series to the oil supply pipe 53, and the flow meter 5
The amount of oil measured in 5 is displayed on the display 56.

A double hose 57 is connected to the oil supply pipe 53 via an elbow 82. The hose 57 is supported by a flexible support column 58 provided upright on the case 51 and folded back to provide oil at the tip thereof. The nozzle N is connected.

A vapor collector 25 (see FIG. 5), which will be described later, is provided in the refueling nozzle N in order to recover the vapor generated in the tank of the vehicle during the refueling work. Blower 81
Flowed through the vapor recovery passage of the double hose 57 into the vapor pipe 80 at the elbow 82, and the underground tank 5
It is supposed to be collected in 2. In the figure, the solid line arrow indicates the flow of oil, and the dotted line indicates the flow of vapor.

In FIG. 5, a double hose 57 is provided at the base end portion of the grip portion 2 of the nozzle body 1, and a main valve 4 which separates from and seats in a valve seat 3 is provided on the opposite side, and a nozzle is provided. It is biased in the valve closing direction by a spring 7 that is interposed between the cover 6 fixed to the main body 1 and the cover 6. The valve rod 5 of this main valve 4 is
The nozzle body 1 is projected to the outside, and its end is engaged with the base of a nozzle lever 8 pivotally attached to the end of a sliding rod 17 of an automatic closing mechanism A described later. Reference numeral 9 in the drawing is a latch for holding the valve open.

A body portion 10 formed continuously with the grip portion 2 of the nozzle body 1 is provided with an automatic closing mechanism A according to a known technique (Japanese Utility Model Publication No. 36-17872). A boss portion 12 perpendicular to the flow direction is formed in the liquid chamber 11 of the body portion 10, and a diaphragm chamber 14 is defined by a cover 13 on the cover 6 side. In the diaphragm chamber 14, a diaphragm 16 urged inward by a spring 15 is stretched. On the other hand, the boss 12
A sliding rod 17 is slidably accommodated in the inner hole of the spring 1
It is urged toward the diaphragm 16 by 5a. Then, the head 18 of the rod 18 attached to the diaphragm 16
The a, the tapered portion 18b and the small diameter portion 18c are inserted into the inner hole of the sliding rod 17. A small hole 17a perpendicular to the axial direction is formed in the sliding rod 17, and the small hole 17a is
A small ball 19 is provided, sandwiched between the head portion 18a and the boss portion 12, and the sliding rod 17 is locked.

A barrel tip portion 20 is provided continuously to the body portion 10. The main body 21 of the barrel tip portion 20 is fixed to the body portion 10, a check valve 22 biased by a spring 23 is provided on the liquid chamber 11 side, and a fuel filler port locking piece 24a is provided on the opposite side. The discharge pipe 24 having the is fixedly installed. A vapor collector 25 made of oil resistant rubber or the like is provided on the outer circumference of the discharge pipe 24. The tip portion 25a of the vapor collector 25 spreads like a trumpet, facilitates sealing with the fuel filler port of the automobile, and collects the vapor. A vapor recovery pipe 26 is opened at an end position of the vapor collector 25, and the vapor recovery pipe 26 is connected to the front chamber 3
0, vapor control valve 33, rear chamber 31, vapor recovery pipe 34,
It is connected to the vapor recovery passage 57b surrounding the oil supply passage 57a of the double hose 57 via the vapor passage 2a. In the figure, reference numeral 39 is a communication passage, 40 is a negative pressure generating portion, 41 is a communication passage, and 42 is an opening.

[0009]

Since the above vapor collector 25 is made of an opaque material, the internal state of the refueling port cannot be seen, which causes inconvenience when replenishing or refueling the minibike. It may cause spillage of fuel oil.

On the other hand, the present applicant has filed Japanese Patent Application No. 4-1323.
In JP-A-08, the vapor collector 25 is made of a transparent synthetic resin material.

However, since the vapor collector 25 has the same thickness as a whole, it is difficult to bend, and the tip portion 25a is further formed.
Since the cross-sections of the continuous portion 25b where the tip portion 25a is continuous with the bellows-like protrusion 25c are both straight lines, when the tip portion 25a is forcibly pressed against the fuel filler port, the vicinity of the continuous corner portion 25d of both portions 25a, 25b. Bends, stress is applied to the transparent resin material in the corner portion 25d, and the tip portion 25a and the continuous portion 25b become opaque over time, causing the above-mentioned inconvenience.

An object of the present invention is to provide an oil supply nozzle capable of maintaining the transparency of a vapor collector.

[0013]

According to the present invention, a thin bellows portion having at least one protrusion, a thick thick flange portion and a continuous portion connecting the flange portion and the bellows portion And a vapor collector formed of a transparent synthetic resin material.

As the transparent resin material, it is preferable to use, for example, "Resamine P", a trade name of Dainichi Seika Kogyo Co., Ltd., which has oil resistance, weather resistance, abrasion resistance, and tight sealing property.

[0015]

In the fueling nozzle configured as described above, when the vapor collector is pressed against the fueling port while holding the fueling nozzle, the thin bellows portion is deformed, and the thick flange portion and the continuous portion are not deformed. The flange portion is brought into close contact with the fuel filler port. Therefore, the flange portion and the continuous portion remain in their original shapes, and thus the transparency of both is maintained.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, parts corresponding to those in FIG. 5 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 1, the cylinder tip portion 20 of the nozzle body 1 is shown.
Is provided with a vapor collector 70 which entirely covers the discharge pipe 24. This vapor collector 70 is
It is molded with a transparent synthetic resin material having oil resistance, weather resistance, abrasion resistance, close sealability, etc., for example, "Resamine P", a trade name of Dainichi Seika Kogyo Co., Ltd.

Referring also to FIGS. 2 and 3, the vapor collector 70 includes a thick flange portion 71 and the flange portion 71.
Is continuously decentered by an eccentric amount E, and the angle α (for example,
Thick wall tubular continuous portion 72 inclined at
2 and a thin bellows portion 73 having at least one ridge 74 (two in the illustrated example), and a thick mounting portion 75 which is continuous with the bellows portion 73 and is inclined at an angle β (for example, 15 °) 75. It consists of

Next, the operation will be described.

At the time of refueling, holding the grip portion 2, the discharge pipe 24
Is inserted into the oil supply port, the vapor collector 70 is pressed against the oil supply port, and the vapor collector 70 is locked by the oil supply port locking piece 24a. Then,
The thin bellows portion 73 is deformed, and the flange portion 71 is brought into close contact with the filler opening.

At this time, the thick flange portion 71 and the continuous portion 72 retain their original shape without being deformed. Therefore,
No stress acts on the transparent synthetic resin material, and transparency is maintained.

[0023]

Since the present invention is constructed as described above, the flange portion and the continuous portion can be prevented from being deformed and the transparency of the transparent resin material can be maintained.

[Brief description of drawings]

FIG. 1 is a side view showing a part in section showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing a vapor collector.

FIG. 3 is a view on arrow X in FIG.

FIG. 4 is a front view showing a fueling machine in which the present invention is implemented.

FIG. 5 is a side sectional view showing a conventional oil supply nozzle.

[Explanation of symbols]

 A ... Automatic closing mechanism 1 ... Nozzle body 2 ... Grip 2a ... Vapor passage 3 ... Valve seat 4 ... Main valve 5 ... Valve rod 6 ... Cover 7. ..Spring 8 ... Nozzle lever 9 ... Latch 10 ... Body 11 ... Liquid chamber 12 ... Boss 13 ... Cover 14 ... Diaphragm chamber 15, 15a ... Spring 16 ... Diaphragm 17 ... Sliding rod 17a ... Small hole 18 ... Rod 18a ... Head 18b ... Tapered portion 18c ... Small diameter portion 19 ... Small ball 20 ...・ Cylinder tip part 21 ・ ・ ・ Main body 22 ・ ・ ・ Check valve 22a ・ ・ ・ Valve rod 23 ・ ・ ・ Spring 24 ・ ・ ・ Discharge pipe 24a ・ ・ ・ Refueling port locking piece 25 ・ ・ ・ Vapor collector 25a ・ ・ ・Tip portion 25b ... Continuous portion 25c ... Projection portion 25d ... Corner portion 26 ... Vapor recovery pipe 0 ... Front chamber 31 ... Rear chamber 33 ... Vapor control valve 34 ... Vapor recovery pipe 39 ... Communication passage 40 ... Negative pressure generating part 41 ... Communication pipe 42 ... Opening 50 ... Refueling machine 51 ... Case 52 ... Underground tank 53 ... Refueling pipe 54 ... Pump 55 ... Flowmeter 56 ... Display 57 ... Double pipe 57a. .. Oil supply passage 57b ... Vapor recovery passage 58 ... Struts 59 ... Nozzle hook 60 ... Valve box 70 ... Vapor collector 71 ... Flange portion 72 ... Continuous portion 73 ... Bellows portion 74 ... Ridges 75 ... Mounting portion 80 ... Vapor pipe 81 ... Blower 82 ... Elbow

Claims (1)

[Claims] 1. A thin bellows portion having at least one projection, a thick thick flange portion and a continuous portion connecting the flange portion and the bellows portion are made of a transparent synthetic resin material. A refueling nozzle equipped with a vapor collector.