JPH11208799A - Oil feed nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regulate a rotation angle of a swivel joint and an oil feed hose with respect to a nozzle body. SOLUTION: The oil feed, nozzle 11 has an injection pipe 12 inserted into an oil port of a vehicle, a swivel joint 14 with an oil feed hose 13 connected and a nozzle body 15 incorporating a valve mechanism for opening/closing a flow path where oil flows. An end of a vapor suction pipeline 18 is split at an injection pipe coupling 19 into an oil type determination system path 20 and a vapor recovery system path 21. After the oil type determination system path 20 and the vapor recovery system path 21 are pulled out from the injection pipe coupling 19 by respectively independent separate paths, they are placed along the oil feed hose 13. A coil-like rotation regulating part 29 elastically deforms in a circumferential direction according to a rotation angle of the nozzle body 15 with respect to the swivel joint 14 and also can regulate the rotation of the nozzle body 15 as load (elastic restoring force) increases.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling nozzle used in a gas station or the like, for example, for supplying an oil solution such as gasoline or light oil to a fuel tank of an automobile.

[0002]

2. Description of the Related Art In refueling stations and the like, a refueling device having a refueling nozzle for refueling a fuel tank of an automobile with an oil liquid such as gasoline or light oil is installed. And
When the customer's car arrives at the refueling station to refuel, the refueling station worker removes the refueling nozzle from the nozzle hook of the weighing machine, inserts the discharge pipe of the refueling nozzle into the refueling port of the fuel tank, and then refuels the nozzle. Operate the nozzle lever in the valve opening direction. Thereby, the valve mechanism built in the nozzle body of the refueling nozzle is opened to start refueling.

When fuel is supplied to the fuel tank in this manner, the inside of the fuel tank is filled with oil vapor (hereinafter referred to as "vapor"). The liquid level in the fuel tank rises, and as a result, the vapor in the fuel tank is released from the filler port into the atmosphere. Therefore, in order to prevent air pollution due to the release of vapor to the atmosphere that occurs during refueling, a method of preventing the release of vapor to the atmosphere has been studied.

For example, a vapor suction port communicating with a vapor suction pipe is provided inside a discharge pipe of a refueling nozzle, and at the time of refueling, vapor in a fuel tank can be collected in an underground tank via a vapor suction pipe. It is considered. for that reason,
The vapor suction line having the above-mentioned vapor suction port is drawn into the measuring machine along the oil supply hose and connected to the suction port of the suction pump, and the vapor discharged from the discharge port of the suction pump is collected in the underground tank. You.

[0005] In a refueling device having an oil type discriminating function, the vapor sucked from an oil supply port to an oil vapor concentration sensor provided inside a weighing machine through a vapor suction line inserted through a discharge pipe of a refueling nozzle. When supplied, the oil vapor concentration sensor outputs a detection signal corresponding to the oil vapor concentration, and the oil type is determined. Then, as a result of the oil type discrimination, when the oil type remaining in the fuel tank matches the oil type supplied by the refueling nozzle, refueling permission based on the oil type discrimination is output to enable refueling.

Accordingly, when the fuel tank has the oil type discriminating function before refueling the fuel tank and the vapor recovery function for recovering the vapor generated during refueling as described above, the two vapor suction lines are provided with the refueling nozzle. And is mounted along the refueling hose.

[0007]

However, in the refueling nozzle having the oil type discriminating function or the vapor recovery function as described above, a swivel joint is rotatably connected to a connecting portion provided on a side surface of the nozzle body. Since the oil supply hose is connected to the other end of the swivel joint, the nozzle body is 360
If the nozzle is turned by more than °, the vapor suction pipe drawn out from the nozzle body may get caught in the outer periphery of the swivel joint and be damaged.

For this reason, the conventional oil supply nozzle is provided with a stopper mechanism so that the swivel joint of the swivel joint cannot rotate more than 360 °. As this stopper mechanism, for example, there is one having a configuration in which a stopper pin is provided on a nozzle body and a stopper engaging portion with which the stopper pin is engaged is provided on a swivel joint. However, in the refueling nozzle having the above-described stopper mechanism, the stopper pin protrudes from the nozzle body, and the stopper engaging portion protrudes from the swivel joint. There was a problem that it was a hindrance and the refueling operation was difficult.

In particular, when a worker at a gas station uses gloves, the gloves may be caught by the stopper pins and the stopper engaging portions, and may be difficult to operate. Therefore,
An object of the present invention is to provide a refueling nozzle that solves the above problem.

[0010]

In order to solve the above problems, the present invention has the following features. The present invention is directed to a nozzle body to which an oil supply hose is connected via a rotatable hose joint, and an oil vapor suction pipe for sucking oil vapor from a vehicle tank through an opening provided at a tip end side of the nozzle body. In the oil supply nozzle having a passage, a coil-shaped portion having an inner diameter larger than the outer diameter of the hose joint is formed in the oil vapor suction line, and the hose joint is inserted through the coil-shaped portion. It is characterized by having.

Therefore, according to the present invention, a coil-shaped portion having an inner diameter larger than the outer diameter of the hose joint is formed in the oil vapor suction pipe, and the hose joint is inserted through the coil-shaped portion. Therefore, when the nozzle body is rotated around the joint, the oil vapor suction pipe is deformed in the circumferential direction, so that the rotation angle of the nozzle body can be restricted, and the nozzle body is rotated too much. The oil vapor suction pipe can be prevented from being damaged, and a stopper pin or the like is not required. Since the stopper pin or the like does not project, the operability of the oil supply operation can be improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of one embodiment of a refueling nozzle according to the present invention as viewed obliquely from below. FIG. 2 is a perspective view of a main part of the refueling nozzle viewed obliquely from above. FIG. 3 is a plan view of the fueling nozzle.

As shown in FIGS. 1 and 3, a refueling nozzle 11 has a discharge pipe 12 inserted into a refueling port (not shown) of a vehicle and a swivel joint as a hose joint to which a refueling hose 13 is connected. 14, a nozzle body 15 having a built-in valve mechanism for opening and closing the flow path through which the oil liquid flows, and a grip 16 provided integrally with the nozzle body 15 and gripped during refueling
And a nozzle lever 17 rotatably attached to the nozzle body 15 below the grip 16.

When the customer's vehicle arrives at the refueling point, the worker at the refueling station removes the refueling nozzle 11 from the nozzle hook provided on the side of the weighing machine (not shown) and connects the discharge pipe 12 to the fuel tank. Insert into mouth. When the vapor of the fuel tank is sucked and the oil type of the refueling nozzle 11 matches the oil type of the fuel tank in the oil type discriminating process, the fuel can be supplied, and the nozzle lever 17 is rotated in the valve opening direction. And refueling is started.

Since the oil supply hose 13 is rotatably connected to the side of the nozzle body 15 through the swivel joint 14 in the direction A, the nozzle pipe 15 is tilted to connect the discharge pipe 12 to the nozzle body 15 as described above. The swivel joint 14 pivots in the direction A when inserted into the fuel supply port of the fuel tank, thereby preventing the fuel supply hose 13 from being twisted. Inside the discharge pipe 12, a vapor suction pipe 18 for sucking vapor generated in a fuel tank (not shown) of the vehicle is inserted. One end of the vapor suction pipe 18 is connected to the discharge pipe 12.
When the discharge pipe 12 is inserted into the fuel supply port of the fuel tank, the vapor of the fuel tank can be sucked. The other end of the vapor suction pipe 18 extends to the inside of a discharge pipe connecting portion 19 for connecting the discharge pipe 12 to the nozzle body 15.

Further, in the discharge pipe connecting portion 19, the other end of the vapor suction pipe 18 is branched into an oil type discriminating path 20 and a vapor recovery path 21. And oil type discrimination system 2
The 0 and the vapor recovery path 21 are drawn out of the discharge pipe connecting portion 19 by independent separate paths, and are arranged along the refueling hose 13. The oil type discrimination system 20 is
A joint 22 connected to project from the upper side of the discharge pipe connecting portion 19 in a radial direction, a hollow tube 23 connected to the joint 22 and disposed along an upper portion of the nozzle body 15, and a refueling hose 13. And a first coil portion 25 and a second coil portion 26 provided between the tubes 23 and 24. The tube 23 is fixed to the upper surface of the nozzle body 15 by a fixing tape 34. The tube 24 is
The oil supply hose 13 is fixed to the outer periphery by a fixing tape 32. The first coil section 25 and the second coil section 26 are mounted in a free state that can be displaced between the tubes 23 and 24.

The vapor sucked through the oil type discriminating system 20 is supplied to an oil vapor concentration sensor (not shown) provided inside the weighing machine. Then, the oil vapor concentration sensor outputs an oil type identification signal corresponding to the oil vapor concentration of the vapor sucked through the oil type identification system path 20. The first coil portion 25 and the second coil portion 26 are formed by winding a tube formed of a highly rigid synthetic resin material (for example, a nylon tube) similar to the tubes 23 and 24 in a coil shape. The coil portion is formed so as to be elastically deformable and expandable and contractable like a coil spring.

The first coil section 25 is connected to the swivel joint 14.
Is rotated in the direction A, the distance between the refueling hose 13 and the nozzle body 15 changes and expands and contracts, and the swivel joint 1
The load on the tube 23 caused by the rotation of the tube 4 is reduced.
Further, the second coil portion 26 expands and contracts according to the degree of bending of the oil supply hose 13 (change in radius of curvature), thereby reducing the load applied to the tube 24 due to the bending of the oil supply hose 13.

Therefore, even if the oil supply nozzle 11 and the oil supply hose 13 are operated when the oil supply nozzle 11 is removed from the nozzle hook of the weighing machine or when the oil supply nozzle 11 is returned to the nozzle hook, for example, the first coil unit 25 The force applied to the tube 23 fixed to the nozzle body 15 and the tube 24 fixed to the outer periphery of the oil supply hose 13 can be absorbed by the expansion and contraction operation of the second coil portion 26.

The vapor recovery passage 21 has an L-shaped joint 27 connected to the lower side of the discharge pipe joint 19, and a hollow joint connected to the joint 27 and arranged along the lower part of the nozzle body 15. And a coil-shaped rotation restricting portion 29 as a rotation restricting mechanism which is wound in a coil shape around the outer periphery of a rotation shaft 14a of the swivel joint 14 which is connected to the tube 28 so as to protrude to the side of the nozzle body 15. Consists of

A joint 30 connected to the downstream side of the coil-shaped rotation restricting portion 29 is connected and fixed to an end of the swivel joint 14. The downstream end of the coil-shaped rotation restricting portion 29 is connected to a tube 31 inserted through an internal flow path of the oil supply hose 13 via a joint 30. Tube 3
1 is drawn into the weighing machine together with the oil supply hose 13. After the start of refueling, the vapor generated in the fuel tank is recovered to an underground tank (not shown) of the oil type that supplies the oil liquid to the refueling hose 13 via the vapor recovery path 21.

The coil-shaped rotation restricting portion 29 includes a tube 28
A coil 29 is formed by winding a tube 29a as an oil vapor suction conduit formed of a synthetic resin material having high rigidity (for example, a nylon tube) similar to that described above in a coil shape around the rotation shaft 14a of the swivel joint 14. The coil portion is formed so as to be elastically deformable and expandable and contractable as shown in FIG. That is, the coil-shaped rotation restricting portion 29 is connected to the swivel joint 14.
In addition to being elastically deformed in the circumferential direction in accordance with the rotation angle of the nozzle main body 15 with respect to, the load (elastic restoring force) is increased and the rotation operation of the nozzle main body 15 can be restricted.

As described above, the coil-shaped rotation restricting portion 29 is provided on the outer periphery of the rotation shaft 14a of the swivel joint 14 by the tube 29a.
Is wound in a coil shape, so that when the refueling operation is performed, there is no hindrance and the gloves of the worker are not caught, so that the refueling operation can be easily performed. FIG. 4 is a longitudinal sectional view for explaining the structure of the refueling hose 13.

As shown in FIG. 4, a tube 24 constituting the oil type discrimination system 20 is fixed to the outer periphery of the oil supply hose 13 by a fixing tape 32. The tube 31 of the vapor recovery passage 21 is inserted into the hollow passage 33 of the oil supply hose 13 through which the oil liquid flows. FIG.
FIG. 4 is a diagram for explaining the operation of the coil-shaped rotation restricting section 29. In FIG. 5, for convenience of explanation, the tube 29a of the coil-shaped rotation restricting portion 29 is simply indicated by a single spiral line.

In the state shown in FIG. 5A, for example, a state in which the refueling nozzle 11 is hooked on the nozzle hook of the weighing machine is a neutral state of the coil-shaped rotation restricting portion 29. In this neutral state, the coil-shaped rotation restricting portion 29 hardly undergoes elastic deformation. The state shown in FIG.
The nozzle body 15 is rotated counterclockwise (A1 direction) with respect to the swivel joint 14 and the swivel joint 14. In this rotation state, since a force in the direction opposite to the coil winding direction acts on the coil-shaped rotation restricting portion 29, the torsional direction (A1) in which the tube 29a of the coil-shaped rotation restricting portion 29 is to be reduced in diameter. Direction).

Therefore, the nozzle body 15 is elastically deformed inward as the nozzle body 15 rotates counterclockwise (along arrow A1) with respect to the oil supply hose 13 and the swivel joint 14, so that the tube 29a of the coil-shaped rotation restricting portion 29 is swiveled. Fitting 1
4 is tightened. Further, the nozzle body 1
5 rotates counterclockwise, the coil-shaped rotation restricting portion 29
The load caused by the elastic deformation of the nozzle body 15
, The rotation load becomes heavy.

After that, when the rotation angle in the counterclockwise direction (A1 direction) reaches about 180 °, the coil-shaped rotation restricting portion 29 loads the counterclockwise direction (A1 direction). Movement becomes impossible. This restricts the clockwise rotation of the nozzle body 15. The state shown in FIG. 5C is a rotation state in which the nozzle body 15 is rotated clockwise (A2 direction) with respect to the oil supply hose 13 and the swivel joint 14. In this rotation state, since a force in the same direction as the coil winding direction acts on the coil-shaped rotation restricting portion 29, the torsion direction (A2 Direction).

Therefore, the nozzle body 15 is moved clockwise (A
As the tube 29a rotates in two directions, the tube 29a of the coil-shaped rotation restricting portion 29 is elastically deformed so as to spread outward. Further, when the nozzle body 15 rotates clockwise (A2 direction), the load increases and the rotation load on the nozzle body 15 gradually increases. Eventually, when the rotation angle in the clockwise direction (A2 direction) reaches about 180 °, the load of the coil-shaped rotation restricting portion 29 further increases the clockwise direction (A2 direction).
Direction). Thereby, the rotation of the oil supply hose 13 and the swivel joint 14 with respect to the nozzle body 15 in the clockwise direction (A2 direction) is restricted.

As described above, the coil-shaped rotation restricting portion 29
When the nozzle body 15 is twisted clockwise or counterclockwise, the rotation angle of the nozzle body 15 with respect to the oil supply hose 13 and the swivel joint 14 can be restricted within 360 °, and the first coil part 25 and the second coil part The first coil section 25 and the second coil section 26 can be protected by preventing excessive force from acting on the first coil section 25 and the second coil section 26.

The oil supply hose 13 and the swivel joint 1
Although the force for returning to the neutral state changes according to the rotation angle of the nozzle body 15 with respect to the nozzle 4, the coil-shaped rotation restricting section 2
Since the return force acts so that the relative position between the nozzle body 15 and the swivel joint 14 returns to the neutral state at 9, the operation of returning the refueling nozzle 11 to the nozzle hook after the refueling is completed can be easily performed.

In the above-described embodiment, the oil supply nozzle provided in the ground-type oil supply device has been described as an example. However, the present invention is not limited to this, and the oil supply nozzle is suspended from the ceiling like a suspended oil supply device. It is needless to say that the present invention can be applied to a configuration having a different configuration.

[0032]

As described above, according to the present invention, a coil-shaped portion having an inner diameter larger than the outer diameter of the hose joint is formed in the oil vapor suction pipe, and the coil-shaped portion is provided with a hose. Because the joint is inserted, when the nozzle body is rotated around the joint, the oil vapor suction pipe is deformed in the circumferential direction, and the rotation angle of the nozzle body can be regulated,
It is possible to prevent the oil vapor suction pipe from being damaged due to excessive rotation of the nozzle body, and it is not necessary to use a stopper pin, etc.
Since the stopper pins do not protrude, the operability of the lubrication operation can be improved. Therefore, the operation of the refueling nozzle can be easily performed, so that the labor of the operator can be reduced and the refueling efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fuel supply nozzle according to an embodiment of the present invention as viewed obliquely from below.

FIG. 2 is a perspective view of a main part of the refueling nozzle as viewed obliquely from above.

FIG. 3 is a plan view of a refueling nozzle.

FIG. 4 is a longitudinal sectional view for explaining a structure of a refueling hose 13;

FIG. 5 is a view for explaining the operation of a coil-shaped rotation restricting section 29;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Oil supply nozzle 12 Discharge pipe 13 Oil supply hose 14 Swivel joint 15 Nozzle body 17 Nozzle lever 18 Vapor suction line 19 Discharge pipe connection part 20 Oil type discrimination system 21 Vapor recovery system 22, 22, 30 Joints 23, 24, 28 , 29a, 31 Tube 25 First coil part 26 Second coil part 29 Coiled rotation restricting part 33 Flow path

Claims (1)

[Claims] 1. A nozzle body to which an oil supply hose is connected via a rotatable hose joint, and an oil vapor suction pipe for sucking oil vapor from a vehicle tank through an opening provided at a tip end side of the nozzle body. In the oil supply nozzle having a passage, a coil-shaped portion having an inner diameter larger than an outer diameter of the hose joint is formed in the oil vapor suction pipe, and the hose joint is inserted through the coil-shaped portion. Refueling nozzle.