JP3209435B2 - Refueling nozzle - Google Patents

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 having a cylinder tip, a cylinder body, and a grip, and having an oil inlet opening on a side surface of the cylinder body.

[0002]

2. Description of the Related Art Refueling nozzles generally comprising a cylinder tip, a cylinder body and a grip are well known in the prior art. Also, generally using a refueling nozzle, for example, when refueling a car,
Since gasoline vapor is generated, it is also well known to collect this vapor in, for example, an underground tank. A fueling nozzle provided with a vapor collector for vapor recovery is disclosed in, for example, Japanese Patent Publication No. 2-42760.

In this known technique, when refueling, generated vapor flows from a vapor collector to a grip, flows through a double hose, and is collected in an underground tank.

[0004] However, in the prior art, the vapor collection path is necessarily provided inside the refueling nozzle, so that the operability is improved. Therefore, the collection path is formed inside the cylinder body, and passes through the grip. It is connected to a double hose vapor recovery path. For this reason, the diameter of the grip portion increases, and when this diameter is reduced, the area through which the oil flows decreases, and the flow loss increases. In addition, when the diameter of the grip portion is large, it is difficult to grip the refueling nozzle, and the operability is impaired.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a refueling nozzle in which a vapor recovery path is provided in a cylinder body of the refueling nozzle and operability is not impaired.

[0006]

According to the present invention, there is provided a cylinder tip (2), a cylinder body (10), and a grip (40), which are provided on the side of the cylinder body (10). The oil inlet (16) and the cylinder tip (2) are connected by a liquid path (18), and the liquid path (1) is connected.
An oil supply valve (12) is provided at 8), and a vapor collector (4) provided at the cylinder tip (2) and a vapor outlet (41) constituting a vapor recovery path at the center of the oil inlet (16).
Are connected by a vapor recovery path (17), and at an oil supply nozzle provided with a vapor valve (21) in the vapor recovery path (17), the oil inlet (16) and the vapor outlet (41) are connected to each other. The elbow (2) is provided concentrically on the side of the cylinder body (10) and connected to the oil inlet (16).
The first part (5) of (5) has a swivel joint and has a double structure with a vapor outflow pipe (27) at the center, the outer periphery of which is an oil introduction pipe (28), and the elbow (25). A liquid passage (43) communicating with a liquid passage (18) connected to the cylinder tip (2) is formed at the center of a second portion (60) extending perpendicular to the first portion (26). A passage (44) communicating with the vapor recovery passage (17) is provided on one side of the second portion (60) of the elbow (25), and the refueling valve (12) is connected to the cylinder body (10). ), The vapor valve (21) is provided outside the cylinder body (10), and the refueling lever (13) opens and closes in conjunction with the refueling valve (12) and the vapor valve (21). )
Is provided.

[0007]

Therefore, the oil flows from the center of the known double hose into the first portion of the elbow, flows from the outer periphery of the second portion of the elbow into the cylinder body, and flows through the oil supply valve. It flows to the tube tip. Further, the vapor flows from a vapor collector through a vapor recovery passage in the cylinder body to a vapor outlet on the center side via a vapor valve. The elbow is then collected from the center of the second portion through a passage on one side of the second portion through a vapor recovery passage of a double hose.

In addition, since the vapor valve is provided outside the cylinder body, the structure of the cylinder body does not become complicated and the flow path resistance does not increase. Furthermore, since the refueling valve and the vapor valve open and close in conjunction with each other, the vapor does not flow out to the atmosphere, and the vapor can be suitably collected.

Also, the inner vapor recovery path and the outer liquid path are formed concentrically at the oil inlet and connected to a double hose having an inner liquid path and an outer vapor recovery path via an elbow. An ordinary double hose having a liquid passage inside and a vapor recovery passage outside can be used.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG.
Refueling machine 50 is provided with case 5 standing on the ground.
1 and an underground tank 52 is buried underground.

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.
The amount of oil measured at 5 is displayed on the display 56.

A double hose 57 is connected to the oil supply pipe 53 via an elbow 100. The hose 57 is supported by a flexible support 58 erected on the case 51, and is folded back to supply oil to the tip thereof. Nozzle 1 is connected. Since the hose 57 is supported on the column and turned back in this way, the nozzle 1 is removed from the nozzle hook N for refueling, and the hose does not contact the ground when refueling. The hose 57 is provided with a safety joint 59,
The hose separates at this safety joint against sudden pulling forces. The safety joint is provided with a check valve, and when the hose is separated, the action of this valve prevents oil from flowing out.

At the time of refueling work, a vapor collector is provided at the refueling nozzle as described later in order to collect vapor generated in the tank of the automobile. The vapor pipe 90 at the elbow 100 through the vapor recovery path 57
And is collected in the underground tank 52. In FIG. 1, the solid arrows indicate the flow of oil, and the dotted lines indicate the flow of vapor.

As shown in FIGS. 2 and 3, the refueling nozzle 1 is composed of a cylinder tip 2, a cylinder body 10, and a grip 40.

The cylinder tip 2 is a portion to be inserted into a fuel filler of an automobile, and has a nozzle part 3 having a filler filler engaging piece 3a. A vapor collector 4 made of oil-resistant rubber or the like is provided on the outer periphery of the nozzle portion 3. The tip portion 4a of the vapor collector spreads in a trumpet shape, so that the vapor collector can be easily sealed with the fuel filler and the vapor can be easily collected. The rear end of the vapor collector 4 is densely mounted with a band 4b on a mounting cylinder 5 protruding from the outer peripheral portion of the nozzle portion 3, and a vapor collection pipe 6 is opened at a substantially intermediate position. The collection pipe 6 is provided outside the cylinder body 10 as shown.

The nozzle portion 3 of the cylinder tip 2 fluidly communicates with the cylinder body 10, and an oil supply valve 12 is provided in the cylinder body 10. The refueling valve 12 is movable in the axial direction in FIG. 2 so that the valve 12 abuts on a valve seat at a position shown in the drawing, so that oil does not flow. However, refueling lever 1
Pull 3 and rotate counterclockwise around the fulcrum 14,
When the lever 13 moves the pin of the valve rod R to the right, the refueling valve 12 opens. Reference numeral 15 in FIG.
2 shows a latch section.

As shown in FIG. 3, an oil inlet 16 having a relatively large diameter is formed on the side of the cylinder body 10. As shown in FIG.
At the center of the oil inlet 16, a vapor outlet 41 constituting the vapor recovery passage 17 is formed concentrically as shown in the figure, and the outer periphery thereof is the liquid passage 18. Therefore, fluid path 1
Reference numeral 8 denotes an arc shape inside the cylindrical body 10 and is formed in a ring shape at an inflow port on the upstream side thereof. An internal thread 19 is screwed into an end of the oil inlet 16 so that an elbow 25 described later is connected thereto.

As shown in FIG. 2, the vapor recovery pipe 6 is provided along the outside of the cylinder body 10 and
In the upper part, the passage is opened and closed by a vapor valve 21 urged in a closing direction by a coil spring 20. When the fuel supply lever 13 is operated to supply oil, the operation end 22 of the lever moves the rod 23 of the vapor valve 21 to the left to open the vapor valve 21. Therefore, during refueling, the vapor valve 21 opens to collect the vapor. The vapor recovery pipe 6 is connected to a communication pipe 24 formed at a substantially right angle downstream of the vapor valve 21 toward the center of the cylindrical body 10, and communicates with the vapor recovery path 17.

As shown in FIG. 3, a first portion 26 connected to the oil inlet 16 of the elbow 25 has a double pipe structure, and a pipe located at the center is a vapor outflow pipe 27 and an outer peripheral portion thereof. Are oil introduction pipes 28. In order to connect the first portion 26 of the elbow 25 to the oil inlet 16 of the cylinder body 10, a rotary fastener 29 is fitted around the outer periphery of the oil introduction pipe 28. An oil inlet 1 is provided on the outer peripheral surface of the rotary fastener 29.
A male screw 32 screwed with the female screw 19 on the inner peripheral surface of the screw 6 is screwed, and an end on the oil inlet 16 side is engaged with a stop ring 30 provided on the outer peripheral surface of the oil introduction pipe 28. Therefore,
The rotary fastener 29 is fitted between the stepped portion 31 with the stop ring 30, the distal end 42 of the vapor outlet pipe 27 is inserted into the vapor outlet 41, and the rotary fastener 29 is rotated. 25 is rotatably attached to the cylinder body 10 in the illustrated state. Thus, the inner peripheral surface of the rotary fastener 29 and the oil introduction pipe 2
8 is rotatable with respect to the outer peripheral surface thereof.
Reference numeral 5 forms a swivel joint at this portion. In the figure, 33 and 34 both seal the rotating surface with an O-ring.

A liquid passage 43 communicating with the liquid passage 18 is formed at the center of a second portion 60 extending perpendicular to the first portion 26 of the elbow 25, and a passage 44 communicating with the vapor recovery passage 17 is formed at the center. This passage 44 is provided on one side,
A portion near an end of the portion communicates with a ring-shaped passage 45.

In order to connect the double hose 57 to the second portion, an intermediate pipe 61 having a flange 66 in the middle is fitted to an end of the inner oil supply hose 62, and the flange 6 is connected to the intermediate pipe 61.
Reference numeral 6 indicates that the end of the oil supply hose 62 is engaged. The end (the lower end in FIG. 3) of the intermediate pipe 61 is inserted into the opening 46 forming the liquid passage 43. A spacer 65 is attached below the flange 66 of the intermediate pipe 61 with a stop ring 67. The spacer 65 has a plurality of through holes 6 in the axial direction.
8 are formed, and these through holes 68 are vapor passages communicating with the passage 45. And the intermediate pipe 61 is the fastening body 6
At 9, it is fastened integrally with the oil supply hose 62. A step 70 formed at the lower end of the outer pipe 63 is engaged with the spacer 68. The outer pipe 63 is formed to have a large diameter by the refueling hose 62. Therefore, the outer peripheral surface of the refueling hose 62 and the outer pipe 63 A vapor passage is formed between the inner peripheral surface and the inner peripheral surface. A flange 72 projecting outward in the radial direction is provided at an intermediate portion of the outer tube 63, and a plurality of ring-shaped projections 75 are provided at a predetermined interval on an outer peripheral portion above the flange 72.
75 is formed so as to protrude radially outward,
These projections 75, 75 and O-ring 85 for sealing
The bellows-shaped vapor recovery hose 76 is fitted airtightly by engaging the concave portion thereof. And this hose 7
The outer periphery of the portion where 6 is mounted is protected by a protection member 77. Second part 60 of elbow 25 and double hose 5
7, a rotary fastener 73 is used.

The opening 4 of the vapor passage 45 of the second part 60
A female screw 80 is screwed on the inner peripheral surface of the screw 8. A male screw 81 screwed with the female screw 80 is provided on the outer peripheral surface of the rotary fastener 73. The inner peripheral surface of the rotary fastener 73 is rotatably engaged with the outer peripheral surface of the outer tube 63, and the upper end thereof is a flange 72, and the lower end is engaged with a stop ring 71 provided on the outer tube 63. ing. Therefore,
The lower end of the intermediate pipe 61 is inserted into the opening 46 and the rotary fastener 7 is inserted.
When the screw 3 is screwed into the inner peripheral surface of the opening 48 and tightened, the double hose 57 is attached to the second portion 60.

Next, the operation of the above embodiment will be described.
The fuel supply nozzle 1 is removed from the case 51 shown in FIG.
3 is pulled to open the refueling valve 12 and the vapor valve 21. When the refueling nozzle is removed from the nozzle hook N, the pump 54 and the blower 91 are activated by the nozzle switch, so that oil is pumped from the underground tank 52 via the refueling pipe 53 and supplied to the vehicle from the refueling nozzle 1. That is, oil is fed as shown by the solid arrow in FIG. From the oil supply hose 62 shown in FIG. 3 to the elbow 25 through the intermediate pipe 61,
From here to the cylinder body 10, the liquid flows in the outer peripheral part. The cylinder body 10 is supplied with oil from the nozzle portion 3 through an arc-shaped liquid passage 18 from the side and through a fuel supply valve 12.

Since the vapor generated during refueling has the vapor valve 21 open, the vapor collector 4, the vapor collection pipe 6,
It passes through a vapor recovery path at the center of the cylinder body 10 through the vapor valve 21, the communication pipe 24, and the first portion 26 of the elbow 25.
Of the spacer 65 through the central portion of
8, through the vapor recovery path 90 between the outer pipe 63 and the oil supply hose 62 and between the vapor hose 76 and the oil supply hose 62, the oil is collected into the underground tank 52 as shown in FIG. This vapor recovery path is indicated by a chain line arrow in FIGS. 1, 2 and 3.

[0025]

As described above, the present invention has the following excellent effects. (A) Since the vapor recovery path in the refueling nozzle does not pass through the grip, the grip does not become large and does not affect operability. (B) Since the vapor valve is provided outside the cylinder body, the structure of the cylinder body does not become complicated and the flow path resistance does not increase. (C) Since the refueling valve and the vapor valve open and close in conjunction,
The vapor can be preferably collected without the vapor flowing out into the atmosphere. (D) The first part of the elbow has a double structure, a swivel joint can be provided, and the operability is the same as the conventional example. (E) Since the conventional double hose can be connected, the refueling nozzle can be easily converted.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a use mode of an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of a fueling nozzle, partially cut away.

FIG. 3 is a partially broken plan view of the embodiment shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Oil supply nozzle 2 ... Cylinder tip part 4 ... Vapor collector 10 ... Cylinder body part 16 ... Oil inlet 40 ... Grip part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-140910 (JP, A) JP-A-62-220497 (JP, A) JP-A-63-178997 (JP, A) 42760 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B67D 5/00-5/70

Claims (1)

(57) [Claims] An oil inlet (16) provided on a side of the cylinder body (10), comprising a cylinder tip (2), a cylinder body (10), and a grip (40), and the cylinder tip. (2) is connected by a liquid passage (18), an oil supply valve (12) is provided in the liquid passage (18), and a vapor collector (4) provided in the cylinder tip (2) and an oil inlet ( The vapor outlet (41) constituting the vapor recovery path at the center of the section (16) is the vapor recovery path (17).
And a vapor valve (2) is connected to the vapor collection path (17).
In the oil supply nozzle provided with 1), the oil inlet (16) and the vapor outlet (41) are provided concentrically on the side of the cylindrical body (10), and the oil inlet ( 16) connected to a first portion (2) of an elbow (25).
6) has a swivel joint, has a double structure, has a vapor outflow pipe (27) at the center, and has an oil introduction pipe (28) at its outer periphery, and a first portion (2) of the elbow (25).
A liquid passage (43) communicating with a liquid passage (18) connected to the cylinder tip (2) is formed at the center of the second portion (60) extending at right angles to 6), and an elbow (25). Second
A passage (44) communicating with the vapor recovery passage (17) is provided on one side of the portion (60), and the refueling valve (12) is provided inside the cylinder body (10). (21) Refueling characterized in that a refueling lever (13) is provided outside the cylinder body (10), and is provided with a refueling lever (13) for opening and closing the refueling valve (12) and the vapor valve (21) in conjunction with each other. nozzle.