JPH10291600A - Oil feeding nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a pistol type oil feeding nozzle in efficiency of operation and stability. SOLUTION: The subject relates to an oil feeding nozzle 11 of the pistol type having a grip 12 behind a nozzle body 13. The nozzle body 13 has in the left side an inflow port 13a into which a hose joint 14a is rotatably fitted. This inflow port 13a is positioned concentrically with an automatic valve-closing mechanism 51 and the inflow port 13a has the center at a position agreeing with the center of gravity of the nozzle 11. Therefore, with the load on an oil feeding hose 28 acting on the axial line which substantially coincides with the center of gravity of the nozzle body 13, the nozzle 11 is stabilized and the attendant is relieved of much burden when the grip 12 is held and oil feeding is done. With an automatic valve-closing mechanism 51 provided in the right side of the nozzle body 13 and the inflow port 13a in the left side, the nozzle 11 is balanced in its left-to-right relations.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a gas station or the like, in which a diaphragm is displaced by a negative pressure generated by a Venturi effect of an oil liquid sent in a flow path, and an automatic valve closing operation is performed by the displacement of the diaphragm. It relates to a refueling nozzle configured as described above.

[0002]

2. Description of the Related Art A refueling nozzle used in a refueling station or the like has a lever type having a nozzle lever extending in parallel with a grip gripped when refueling, or a trigger type such as a pistol with a fingertip. There is a pistol type that rotates a lever. Also, with a conventional refueling nozzle, when performing a full tank refueling, the valve body of the valve mechanism is locked at the valve opening position by the valve opening operation of the nozzle lever, and when the rise in the liquid level is detected, the automatic valve closing mechanism is opened. The refueling is automatically stopped by the valve closing operation. The automatic valve closing mechanism provided in the oil supply nozzle in this manner has a Venturi effect, that is, a negative pressure generating unit that generates a negative pressure by the flow rate of the oil liquid, and the diaphragm is generated by the negative pressure generated in the negative pressure generating unit. The valve body is caused to perform a valve closing operation by being displaced.

[0003] During refueling, air is sucked from an air inlet provided near the tip of the discharge pipe, and the sucked air is supplied to a negative pressure generating section. Therefore, if the discharge port opening at the end of the discharge pipe is blocked by the liquid level due to the rise of the liquid level, the air suction from the discharge port is shut off, and the diaphragm is displaced by the negative pressure generated in the negative pressure generating section. Then, the valve body is closed.

The automatic valve closing mechanism has a relatively heavy weight because it has a diaphragm and a locking member for locking the valve body, and the position of the center of gravity of the refueling nozzle is determined by the position where the automatic valve closing mechanism is provided. Here, the load acting on the pistol-type refueling nozzle will be described with reference to the drawings. FIG. 17 is a side view showing a state in which the conventional pistol type refueling nozzle is horizontal,
FIG. 18 is a side view showing the position of the center of gravity of the nozzle when the conventional pistol type oil supply nozzle is held, and FIG. 19 is a side view showing the moment acting on the conventional pistol type oil supply nozzle.

A conventional pistol type refueling nozzle 1 is shown in FIG.
As shown in FIG. 7, a discharge pipe 3 is attached to a front part of the nozzle body 2, a grip 4 is provided at a rear part of the nozzle body 2, a nozzle lever 5 for performing a valve opening operation at a lower part of the nozzle body 2, a lever 5. A guard 6 is provided. An inflow port 8 is provided on the left side of the nozzle body 2 to which the rotary joint 7 a of the oil supply hose 7 is rotatably connected, and an automatic valve closing mechanism 9 is provided on the right side of the nozzle body 2. .

Further, the inlet 8 is provided offset from the automatic closing mechanism 9 for reducing the flow resistance distance L ₁ by the outlet side, that the discharge pipe 3 side. Therefore, when the oil supply nozzle 1 is in a horizontal state, the nozzle center of gravity with respect to the inlet 8, i.e. the position of the automatic closing mechanism 9 is shifted backward by a distance L _1, the load F ₁ refueling nozzle 1 flow Acting as a rotational moment M ₁ = F ₁ × L ₁ about the inlet 8.

Accordingly, when the discharge pipe 3 is inserted into a fuel supply port (not shown) of the vehicle, the fuel supply nozzle 1
It is biased in a clockwise direction around the inlet 8 by the rotational moment M ₁ that attempts to rotate in a clockwise direction. Therefore, fueling nozzle 1 inserted into the filler opening of the vehicle, the discharge pipe 3 is held so as not to fall off from the fuel supply port by the action of the rotation moment M _1.

[0008]

However, as shown in FIG. 18, since the oil supply nozzle 1 is moved before and after insertion into the oil supply port, the discharge pipe 3 is placed upward so that the oil liquid does not overflow from the discharge pipe 3. When the grip 4 of the refueling nozzle 1 is gripped toward it, the load on the refueling nozzle 1 must be supported by the middle finger (a) abutting on the base portion (point A) of the lever guard 6. At this time, the inflow port 8 is separated from the automatic valve closing mechanism 9 by a distance L _1.
Because only provided offset to the front, the load F ₂ of fuel supply hose 7 is pivoted joints 7a acts on the center of the rotatably connected inlet 8, the point of action middle finger abuts A It is shifted in the horizontal direction by a distance L ₂ to a point.

Therefore, in the conventional refueling nozzle 1, the rotational moment M ₂ = F ₂ × due to the load F ₂ of the refueling hose 7.
L ₂ is supported by the middle finger (A), and the thumb (B) is used to suppress the rotation toward the discharge pipe 3 around the inflow port 8.
Therefore, it is necessary to prevent the rotation, and a burden is placed on the wrist of the worker. In particular, when the pressurized oil liquid is filled in the oil supply hose 7, the oil supply hose 7
Was heavy and could not be supported with one hand.
Therefore, the conventional refueling nozzle 1 sometimes needs to be supported by both hands when inserting the discharge pipe 3 into the refueling port of the vehicle, and there is a problem that the operation during the refueling operation is difficult.

Further, the discharge pipe 3 of the refueling nozzle 1 is connected to a vehicle.
When the oil is inserted into the refueling port, as shown in FIG.
Turn the discharge pipe 3 upward so that the oil liquid does not overflow from the pipe 3.
The discharge pipe 3 slightly while holding the refueling nozzle 1
It is necessary to change the direction of refueling nozzle 1 so that
It is necessary. However, when the discharge pipe 3 is
Tilt the discharge pipe 3 forward while holding the oil nozzle 1
The load F of the refueling hose 7_TwoRotational moment due to
M _Two= F_Two× L_FourWith your middle finger (a) and your thumb (b)
It is necessary to gradually release the power of the worker
Load on the wrist and the load F on the refueling hose 7 _TwoTo
May not be supported with one hand.

Therefore, an object of the present invention is to provide a refueling nozzle which solves the above problem.

[0012]

In order to solve the above problems, the present invention has the following features. Claim 1
The invention is characterized in that an oil supply hose is connected, an inlet through which the oil liquid sent through the oil supply hose flows, an outlet through which the oil liquid flowing into the inlet flows out to the discharge pipe, A valve body that opens and closes a flow path formed between the valve body and the outlet, and the valve body is locked at a valve opening position by a valve opening operation, and the negative pressure generated by a Venturi effect in the flow path causes the valve body to be closed. And an automatic valve closing mechanism that releases the locking of the valve and performs a valve closing operation, wherein the inflow port is provided so as to be located coaxially with the automatic valve closing mechanism.

Therefore, according to the first aspect of the present invention, since the inflow port is provided so as to be coaxial with the automatic valve closing mechanism, the rotation connected to the inflow port due to the weight of the nozzle, the weight of the hose, and the tension of the hose. The rotational moment acting on the inlet shaft of the joint is reduced.For example, when the discharge pipe is directed upward when performing a refueling operation, or when the discharge pipe is inclined and inserted into the refueling port of the vehicle, lubrication is centered on the inflow port. The nozzle can be easily rotated and the lubrication operation can be easily performed.

According to a second aspect of the present invention, an oil supply hose is connected to the inflow port, through which the oil liquid sent through the oil supply hose flows, and the oil liquid flowing into the inflow port flows out to the discharge pipe. An outlet, a valve body that opens and closes a flow path formed between the inlet and the outlet, and locks the valve body at a valve opening position by a valve opening operation, and a venturi effect in the flow path. An automatic valve closing mechanism for releasing the locking of the valve body by a generated negative pressure and performing a valve closing operation, wherein the automatic valve closing mechanism is provided with a diaphragm responsive to the negative pressure, The inlet is provided at a position where the projected area of the inlet overlaps at least the projected area of the diaphragm.

According to the second aspect of the present invention, since the inflow port substantially coincides with the center of gravity of the nozzle, the weight of the nozzle, the weight of the hose, and the tension of the hose act on the inflow port shaft of the rotary joint connected to the inflow port. When the refueling operation is performed, for example, when the discharge pipe is directed upward or when the discharge pipe is inclined and inserted into the refueling port of the vehicle, it is easy to rotate the refueling nozzle around the inflow port. Can be easily performed.

According to a third aspect of the present invention, an oil supply hose is connected to an inflow port through which the oil liquid sent through the oil supply hose flows, and the oil liquid flowing into the inflow port flows out to a discharge pipe. An outlet, a valve body that opens and closes a flow path formed between the inlet and the outlet, and locks the valve body at a valve opening position by a valve opening operation, and a venturi effect in the flow path. An automatic valve closing mechanism that releases the locking of the valve body by a generated negative pressure and performs a valve closing operation, so that the inflow port and the automatic valve closing mechanism are positioned on an extension of a grip portion. It is characterized by having been provided.

Therefore, according to the third aspect of the present invention, since the inflow port and the automatic valve closing mechanism are provided so as to be located on the extension of the grip, the rotational moment acting on the grip can be reduced. When the discharge pipe is directed upward so that the oil liquid does not overflow from the discharge pipe during the refueling operation, no rotational moment acts on the gripping portion, and the lubrication nozzle can be gripped with relatively light force.

According to a fourth aspect of the present invention, an oil supply hose is connected to the inflow port, through which the oil liquid sent through the oil supply hose flows, and the oil liquid flowing into the inflow port flows out to the discharge pipe. An outlet, a valve body that opens and closes a flow path formed between the inlet and the outlet, and locks the valve body at a valve opening position by a valve opening operation, and a venturi effect in the flow path. An automatic valve closing mechanism that releases the locking of the valve body by a generated negative pressure and performs a valve closing operation, wherein the inflow port is provided on a side opposite to the side provided with the automatic valve closing mechanism. It is characterized by having been provided.

Therefore, according to the fourth aspect of the present invention, since the inflow port is provided on the side opposite to the side provided with the automatic valve closing mechanism, the position of the center of gravity of the nozzle coincides with the point of application of the load of the refueling hose. At the same time, the left and right balance of the nozzle can be kept stable.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view of one embodiment of a fueling nozzle according to the present invention, FIG. 2 is a transverse sectional view of the fueling nozzle,
FIG. 3 is an enlarged longitudinal sectional view showing the internal configuration of the refueling nozzle,
FIG. 4 is an enlarged cross-sectional view showing the internal configuration of the fueling nozzle.

The refueling nozzle 11 is a pistol-type refueling nozzle in which a grip 12 gripped during a refueling operation is provided at the rear of the nozzle body 13. The nozzle body 13 has an inlet 13 into which a hose joint 14a is rotatably fitted on the left side surface.
a. The center of the inflow port 13a is connected to an automatic valve closing mechanism 5 provided on the right side of the nozzle body 13 as described later.
The fuel supply nozzle 11 is provided so as to be substantially coaxial with the center of the fuel supply nozzle 1 and substantially coincides with the center of gravity G of the refueling nozzle 11. That is, the inlet 13a is provided at a position where the projected area of the inlet 13a overlaps at least the projected area of the automatic valve closing mechanism 51.

The automatic valve closing mechanism 51 may be mounted so that the central axis is perpendicular to the right side of the nozzle body 13 or the central axis may be attached to the right side of the nozzle body 13. A configuration may be adopted in which the lens is attached to be inclined at a predetermined angle with respect to the angle. An elbow 14b is rotatably connected to the hose joint 14a, and a hose joint 14c is rotatably connected to the elbow 14b.
Is connected to a refueling hose 28. Accordingly, the load (tension) of the refueling hose 28 acts on an axis that substantially coincides with the center of gravity of the nozzle body 13, so that the refueling nozzle 11 is stabilized, and when the grip 12 is gripped and the refueling operation is performed, the burden on the operator is increased. Is reduced.

Also, a relatively heavy automatic valve closing mechanism 5
1 is provided on the right side surface of the nozzle body 13, and the inflow port 13 a on which the load of the oil supply hose 14 d acts is connected to the nozzle body 13.
Is provided on the left side surface of the fuel supply nozzle 11, so that the left and right balance of the refueling nozzle 11 is balanced. Further, the grip 12 is formed such that the extension range H of the grip portion 12a has an inclination angle θ including the center of gravity G of the refueling nozzle 11. Therefore, when performing the refueling operation, when the gripping portion 12a of the grip 12 is gripped with one hand and the tip of the refueling nozzle 11 is directed upward, no rotational moment acts, the refueling nozzle 11 does not fluctuate, and The discharge pipe 16 can be inserted into the fuel filler of the vehicle without burdening the wrist.

A valve seat member 15 of the main valve and a pipe connecting member 17 to which a discharge pipe 16 is connected are inserted into the opening on the distal end side of the nozzle body 13, and both members are held by tightening a nut 18. An oil passage 19 formed in the valve seat member 15 and the pipe connecting member 17, and a valve mechanism 23 including a negative pressure generating section 20 and a main valve body 21 in the oil passage 19 are provided.

The refueling nozzle 11 has a nozzle lever 26 rotatably provided in front of the grip 12, and the grip 12 has a lever guard 12b around the nozzle lever 26 on the front side. The nozzle lever 26 is inserted into the engagement hole 40a of the valve shaft 40 that drives the valve mechanism 23 to open and close, and can be rotated in the direction C to move the main valve body 21 in the valve opening direction. Further, the nozzle lever 26 is formed in a shape similar to that of a pistol trigger, and has an upper end rotatably supported by a shaft 26a and a lower end serving as a curved portion 26b curved in an arc shape.

Further, a contact portion 26c is provided at an intermediate portion of the nozzle lever 26 inserted into the engagement hole 40a of the valve shaft 40 to abut against the inner wall of the engagement hole 40a. The contact portion 26b projects in a semicircular shape so as to press the inner wall of the engagement hole 40a in the valve opening direction (B direction) even when the nozzle lever 26 is rotated in the valve opening direction (C direction). I have. Therefore, when performing the refueling operation, the grip portion 12a of the grip 12
Is gripped and the curved portion 26b of the nozzle lever 26 is pulled in the direction C, the valve shaft 40 slides in the direction B, and the main valve body 21 of the valve mechanism 23 is separated from the valve seat member 15 to open. Thereby, refueling is started. Further, when the lower end of the nozzle lever 26 is hooked on a hook (not shown) of the lever guard 12b, the valve shaft 40 and the main valve body 21 are locked at the fully open position, and the tank is fully refueled.

The negative pressure generating section 20 is provided inside the valve seat member 15 and is configured to generate a negative pressure corresponding to the discharge amount of the oil liquid.
When the refueling is stopped, the passage 24 is opened from the inner wall, and when the refueling is stopped, the passage 24 is brought into contact with the inner wall by the pressing force of the coil spring 25.
4 comprises a valve body 27 for closing the opening. Valve 27
Has a tapered abutting portion that abuts on the inner wall and closes the oil flow path 19, and is slidably inserted into a central hole formed in the pipe connecting member 17. Further, an air suction pipe 33 is inserted into the internal passage 16 a of the discharge pipe 16. One end of the air suction pipe 33 is connected to communicate with the air introduction hole 32 provided at the tip of the discharge pipe 16, and the other end of the air suction pipe 33 is connected to the downstream center formed in the pipe connection member 17. It is inserted through the hole 29.

The air introduction hole 32 functions as a liquid level detecting section when the tank is full, and sucks air by the negative pressure generated by the negative pressure generating section 20. And the air introduction hole 3
The air sucked from the nozzle 2 passes through the suction pipe 33 and passes through the central hole 2.
9 and is supplied to an annular passage 35 formed on the outer periphery of the valve seat member 15 and the pipe connection member 17. The other end of the passage 24 connected to the oil passage 19 is connected to the annular passage 35.

When the nozzle lever 26 of the refueling nozzle 11 is operated in the direction C to open the valve mechanism 23, the valve body 27 is pressed in the direction A by the fluid pressure to open the valve to start refueling. Thereby, the oil liquid is discharged to the discharge pipe 16 through the oil flow path 19. At this time, in the negative pressure generating section 20, a Venturi effect, that is, a negative pressure corresponding to the flow rate of the oil liquid is generated, and the air in the passage 24 opened on the inner wall of the oil flow path 19 is sucked into the oil flow path 19. Is done. Also, when refueling is stopped,
Since the valve mechanism 23 closes and the valve body 27 closes the oil flow path 19, the negative pressure disappears and the suction of air from the passage 24 also stops.

The valve shaft 40 has a front shaft 41 and a rear shaft 42 which are slidably fitted to each other, and are slidable in A and B directions by a bearing 43 provided in the nozzle body 13. The main valve body 21 is axially supported and is pressed against the valve seat member 15 by the spring force of the coil springs 44 and 45. When the nozzle lever 26 is rotated in the direction C,
The front shaft 41 and the rear shaft 42 integral with the main valve body 21 are displaced in the valve opening direction (B direction). This allows
The oil liquid sent to the oil supply nozzle 11 via an oil supply hose (not shown) passes through an oil flow path 19 and is supplied to the oil supply port of the fuel tank from the discharge pipe 16. An O-ring 46 is provided on the outer periphery of the front shaft 41 to seal between the front shaft 41 and the inner wall of the bearing 43.

The suction pipe 33 inserted into the discharge pipe 16
Is the pipe connection member 1 in the nozzle body 13 during refueling.
It communicates with a negative pressure generator 20 provided downstream of the valve mechanism 23 through a central hole 29 and passages 34 and 35 formed in the inside 7. When the valve mechanism 23 opens the valve and the oil flows from the oil passage 19 into the oil passage 16 a in the discharge pipe 16, the negative pressure is reduced by the venturi effect of the negative pressure generator 20 with the outflow of the oil. The air in the passage 24 is generated and
Is sucked into.

In FIG. 2, reference numeral 51 denotes an automatic valve closing mechanism which performs a valve closing operation by detecting the liquid level when the tank is full. The automatic valve closing mechanism 51 includes a diaphragm chamber 53 having a passage 52 communicated therewith, a diaphragm 54 mounted in the diaphragm chamber 53, a concave portion 41 a of a front shaft 41 and a rear shaft 42 connected to a central portion of the diaphragm 54. Notch 42
a, a coil spring 57 for urging the diaphragm 54, and a lid 59 for closing the diaphragm chamber 53.

The outer peripheral edge of the diaphragm 54 is fitted and fixed to a slit formed in the inner wall of the diaphragm chamber 53, and the center portion is displaced in the E and F directions in accordance with a change in the pressure of the diaphragm chamber 53. The diaphragm 54 and the inlet 13a are provided at positions where the projected area of the diaphragm 54 and the projected area of the inlet 13a overlap when the nozzle body 13 is viewed from the side.

The diaphragm chamber 53 is provided with passages 52 and 3
It is connected to the oil flow path 19 of the negative pressure generating section 20 via the passages 5 and 24, and to the suction pipe 33 via the passages 52 and 35 and 34. At the time of refueling, the negative pressure generated in the negative pressure generating section 20 is supplied to the suction pipe 3 via the passages 24, 35, 34.
3 is supplied to the suction pipe 33 and the passages 34, 35, 24 through the air introduction hole 32 provided at the tip of the discharge pipe 16.

For this reason, the pressure in the diaphragm chamber 53 is
It is constant during refueling and does not change until the air introduction hole 32 is closed by the liquid level and the air supply from the suction pipe 33 is stopped. At this time, the diaphragm 54 provided in the diaphragm chamber 53 is urged in the F direction by the spring force of the coil spring 57, and the pin 55a of the engaging member 55 is notched in the concave portion 41a of the front shaft 41 and the notch of the rear shaft 42. 4
2a is held at the valve shaft locking position.

Further, the rear shaft 42 is locked at a valve opening position where the nozzle lever 26 is displaced in the direction B by the valve opening operation, and the front shaft 41 is connected to the rear shaft via the pin 55a of the engaging member 55. Locked to the shaft 42. Here, when the air introduction hole 32 of the discharge pipe 16 is closed by the liquid level, the suction of air from the air introduction hole 32 is shut off, and the liquid level is detected. That is, the supply of air from the suction pipe 33 to the negative pressure generating unit 20 is stopped, and
The air in the diaphragm chamber 53 is sucked into the negative pressure generating section 20 through.

As a result, the air pressure in the diaphragm chamber 53 is reduced, and the center of the diaphragm 54 is
Is displaced in the E direction against the spring force of. As a result, the pin 55a of the engaging member 55 provided on the diaphragm 54 is separated from the notch 42a of the rear shaft 42 to release the locking of the front shaft 41. Then, the front shaft 41 closes the valve in the direction A by the spring force of the coil spring 44 to bring the main valve body 21 into contact with the valve seat member 15. Thus, the oil passage 19 is shut off by the main valve body 21 and the supply of the oil liquid is stopped.

FIG. 5 is a side view when the refueling nozzle is in a horizontal state. The refueling nozzle 11 is provided so that the center of the inflow port 13a is located coaxially with the center of the automatic valve closing mechanism 51 as described above, and is provided at a position substantially coincident with the center of gravity G of the refueling nozzle 11. So refueling hose 28
Load F acts on the same line as the center of gravity G. Therefore, a rotational moment for rotating the oil supply nozzle 11 about the joint 14 of the oil supply hose 28 does not act, and when the operator grips the joint 14, the oil supply nozzle 11 does not exert a force on the thumb (b). 11 can be easily kept horizontal.

Further, since the distance from the grip 12 to the position where the load F of the refueling hose 28 acts is small, when the refueling nozzle 11 is held horizontally and the grip 12 is gripped, a lighter force than the conventional one is used. Can be grasped. FIG. 6 is a side view showing a state in which the discharge pipe 16 of the refueling nozzle 11 faces upward.

As described above, the discharge pipe 16 is directed upward so that the oil liquid does not overflow from the discharge pipe 16.
When the first grip 12 is gripped, the load on the refueling nozzle 11 must be supported by the middle finger (a) that contacts the base (point A) of the lever guard 12b. However, the center of the inflow port 13a of the refueling nozzle 11 is
1 and is provided at a position substantially coincident with the center of gravity G of the refueling nozzle 11 and included in the extension range H of the gripping portion 12a. Turning, position acting load F refueling hose 28 is shifted rearward by a distance L ₃ from the point a. Therefore, the rotational moment M ₃ due to the load F ₂ of the refueling hose 7
= F ₂ × L ₃ is supported by the thumb (b) that contacts the point B on the rear side of the grip 12.

As described above, when the discharge pipe 16 of the refueling nozzle 11 is directed upward, the load of the refueling nozzle 11 and the refueling hose 28 can be supported by not only the middle finger (A) but also the thumb (B). The load on the wrist and the load on the arm of the worker holding the grip 12 can be reduced as compared with the conventional one. Therefore, even if the refueling nozzle 11 is moved while being held with one hand, the labor of the operator is small, and the refueling operation is easy.

FIG. 7 is a side view showing a state in which the discharge pipe 16 of the refueling nozzle 11 is tilted with the discharge pipe 16 facing upward. The discharge pipe 16 of the refueling nozzle 11 is connected to a refueling port (not shown) of the vehicle.
In order to prevent the oil liquid from overflowing from the discharge pipe 16, the direction of the fuel supply nozzle 11 is changed so that the discharge pipe 16 is tilted slightly forward while holding the fuel supply nozzle 11 with the discharge pipe 16 facing upward. There is a need.

The oil supply nozzle 1 with the discharge pipe 16 facing upward
1. When the discharge pipe 16 is tilted forward while holding the
The load F of the refueling hose 28_TwoRotational moment M
_Five= F _Two× L_FiveActs, but the load F_TwoThe position where
Coincides with the center of gravity G._TwoWorks
Distance L to the position_FiveIs smaller than the conventional one (L
_Five<L_Four). Therefore, the load F_TwoRotational moment due to
M_FiveIs smaller than the conventional one,
Since a rotational moment acts in the direction, support with the middle finger (a)
Easier and less force on the thumb
The refueling nozzle can be used even when the refueling nozzle 11 is tilted
11 acting on the load F_TwoCan be supported with one hand.
The burden on traders can be reduced.

FIG. 8 is a longitudinal sectional view showing a first modification of the sealing structure of the valve shaft 40. As shown in FIG. A packing groove 61 is formed on the inner periphery 43 a of the bearing 43 through which the front shaft 41 of the valve shaft 40 is inserted.
Are provided all around. A sealing member 62 made of a lip packing having a V-shaped, U-shaped, or Y-shaped cross section is mounted in the packing groove 61.

The packing groove 61 is provided in the coil spring 44.
Are provided in the vicinity of the spring receiving portion 43b of the bearing portion 43 with which the rubber seal member 62 abuts. A contact surface 43b with which the coil spring 44 abuts is formed on an end surface of the bearing portion 43.
b is provided with a guide portion 43c projecting annularly.

As described above, by providing the seal member 62 on the inner wall 43a of the bearing portion 43, when the O-ring is mounted in the outer peripheral groove provided on the outer periphery of the front shaft 41,
It is necessary to enlarge the ring larger than the outer diameter of the front shaft 41, and the assembling work is considerably troublesome, and the O-ring may be damaged. On the other hand, the bearing 43
In the configuration in which the seal member 62 is mounted on the inner periphery 43 a of the seal member 62, the seal member 62 can be mounted before the valve shaft 40 is inserted into the bearing portion 43, and it is not necessary to extend the outer diameter of the front shaft 41 more greatly. The work of assembling the member 62 can be performed efficiently and without fear of breakage.

FIG. 9 is a longitudinal sectional view showing a modified example 2 of the seal structure of the valve shaft 40. A first step 66 is provided on the end surface of the bearing 43 through which the front shaft 41 of the valve shaft 40 is inserted, and the seal member 62 is provided on the inner peripheral side of the step 66. A second step 67 to be mounted is provided. The seal member 62 is housed in an annular space formed between the second step portion 67 and the spring receiver 65,
The falling off is prevented by the spring receiver 65.

The spring receiver 65 has one end in contact with the wall surface of the first step portion 66 to hold the seal member 62, and the other end has a contact surface 65a in contact with the coil spring 44. The contact surface 65a has An annularly protruding guide portion 65b is provided. In the center of the spring receiver 65, a hole 65c through which the front shaft 41 is inserted is penetrated. Also, the spring receiver 6
5 is pressed by the first step portion 66 by the spring force of the coil spring 44, so that when the front shaft 41 of the valve shaft 40 is inserted into the bearing portion 43 and the coil spring 44 is assembled in a compressed state, the spring receiver 65 and The sealing member 62 is the stepped portion 6
6 and 67.

As described above, since the spring receiver 65 and the seal member 62 are only inserted from the axial direction into the first step portion 66 and the second step portion 67 formed so as to open at the end faces of the bearing portion 43, the front side Unlike the case where an O-ring is attached to the outer periphery of the shaft 41, the O-ring does not need to be made larger than the outer diameter of the front shaft 41, and the assembling work of the seal member 62 can be easily performed.

Further, even when the seal member 62 is inspected or replaced, the inspection and replacement work of the seal member 62 can be easily performed only by removing the spring receiver 65. FIG. 10 is a longitudinal sectional view showing a third modification of the sealing structure of the valve shaft 40, and FIG.
FIG. 9 is a view of Modification Example 3 of the seal structure of the valve shaft 40 as viewed from the axial direction. At the entrance of the first step 66 formed on the end face of the bearing 43 through which the front shaft 41 of the valve shaft 40 is inserted, a locking groove 70 is provided on the entire circumference. A locking C-ring 71 for preventing the spring receiver 65 inserted into the first step portion 66 from falling off is fitted into the locking groove 70.

When viewed from the front, the locking C-ring 71 is C
It is formed in the shape of a letter, and its inner diameter is reduced by pressing both end portions in the approaching direction, and is inserted into the locking groove 70 from the inside of the first step portion 66. When the pressing of both ends is released, the locking C-ring 71 is expanded outward and returns to the original state, so that the locking C-ring 71 is fitted and fixed inside the locking groove 70.

In this state, the outer peripheral side of the locking C-ring 71 is fitted into the locking groove 70, and the inner peripheral side of the locking C-ring 71 protrudes inside the first step 66. Therefore, the outer periphery of the spring receiver 65 inserted into the first step portion 66 is in contact with the locking C-ring 71 to prevent the spring receiver 65 from falling off. Therefore, since the spring receiver 65 is locked by the locking C-ring 71, there is no possibility that the spring receiver 65 will fall off even during assembly in which the spring force of the coil spring 44 does not act.

As described above, the spring receiver 65 and the sealing member 62 are inserted into the first stepped portion 66 and the second stepped portion 67 formed so as to be open at the end surfaces of the bearing portion 43 from the axial direction, and are used for locking. Since the C-ring 71 is merely fitted into the locking groove 70, unlike the case where an O-ring is attached to the outer periphery of the front shaft 41, the O-ring does not need to be larger than the outer diameter of the front shaft 41, and the sealing member 62 can be easily performed.

Further, even when the seal member 62 is inspected or replaced, the inspection and replacement work of the seal member 62 can be easily performed only by removing the C-ring 71 from the locking groove 70. FIG. 12 is a longitudinal sectional view showing Modification 4 of the seal structure of the valve shaft 40, FIG. 13 is a side view of a spring receiver of Modification 4, and FIG.
FIG. 4 is a front view of a spring receiver according to a fourth modification.

An internal thread 75 is provided on the inner periphery of the first step 66 formed on the end face of the bearing 43 through which the front shaft 41 of the valve shaft 40 is inserted. A spring receiver 76 for holding the seal member 62 is screwed into the female screw 75. The spring receiver 76 has a male screw 77 screwed into the female screw 75 on the outer periphery, one end of which contacts the wall surface of the first step portion 66 to define a space in which the seal member 62 is housed, and the other end has It functions as a spring receiving surface 76a with which the coil spring 44 contacts. In the center of the inside of the spring receiver 76, the valve shaft 4
The hole 76c through which the front shaft 41 is inserted penetrates. Further, an engagement surface 76d with which a tool such as a wrench is engaged is provided on the outer periphery of the annular guide portion 76b which protrudes in the axial direction from the spring receiving surface 76a.

For this reason, the sealing member 62 is
After being inserted into the bearing 4, the external thread 77 of the spring receiver 76 is
Then, the tool is engaged with the engagement surface 78a to rotate the spring receiver 76 clockwise. Accordingly, the end surface 76e of the spring receiver 76 is
And the male screw 77 is screwed into the female screw 75 to prevent the seal member 62 from slipping out.

As described above, the sealing member 62 is connected to the first step portion 6.
After the O-ring is attached to the outer periphery of the front shaft 41, since the external thread 77 of the spring receiver 76 is screwed into the internal thread 75 of the bearing portion 43 after being inserted into the O-ring 6, it can be easily attached. As described above, there is no need to expand the O-ring larger than the outer diameter of the front shaft 41,
2 can be easily performed.

Further, even when the seal member 62 is inspected or replaced, the inspection and replacement work of the seal member 62 can be easily performed only by removing the spring receiver 76. FIG. 15 is a longitudinal sectional view showing a modification of the refueling nozzle. Refueling nozzle 8
Reference numeral 1 denotes a pistol-type refueling nozzle, and a grip 82 is detachably attached to a nozzle body 83.
The internal configuration of the nozzle main body 83 is substantially the same as that of the above-described refueling nozzle 11, and a description thereof will be omitted.

The grip 82 is connected to the lever guard 8.
2a is provided integrally with the lever guard 82a.
The mounting hole 82b through which the mounting bolt 84 is inserted
Are provided in two places. At the lower part of the nozzle body 83, a mounting bolt 84 is provided at a position facing the mounting hole 82b.
Is provided in the screw hole 85 into which is screwed. Therefore, the grip 82 is configured such that the two mounting bolts 84
Is fixed to the lower part of the nozzle main body 83 by being screwed into the screw hole 85 and tightened. In addition, the nozzle body 8
The lower part of 3 is provided with a mounting hole 86 for an operation lever used for the lever type refueling nozzle and a mounting hole 87 for a transmission lever for transmitting rotation of the operation lever to the valve shaft 40.

Therefore, the oil supply nozzle 81 can be changed from the pistol type oil supply nozzle to the lever type oil supply nozzle by removing the mounting bolt 84 and using the attachment holes 86 and 87. FIG. 16 is a longitudinal sectional view showing a state in which the lever type refueling nozzle is changed. Reference numeral 90 denotes a lever-type grip, which includes a grip portion 90a and a lever guard 90.
b are provided integrally. In addition, a lever retaining portion 90c is provided between the end of the grip portion 90a and the end of the lever guard 90b.

The gripping portion 90a is formed such that its extension range H has an inclination angle θ including the center of gravity G of the refueling nozzle 81. Therefore, when performing the refueling operation, even if the gripping portion 90a is gripped with one hand or the discharge pipe 16 is directed upward, no rotational moment acts, and the discharge pipe 16 is connected to the refueling port of the vehicle without causing the refueling nozzle 81 to fluctuate. Can be plugged in.

At the upper portion of the upper portion of the grip 90, mounting holes 90d are provided at two positions where the mounting bolts 84 are inserted at positions facing the screw holes 85 of the nozzle body 83. 9
1 is an operation lever, one end of which is provided with a mounting hole 86 of the nozzle body 83.
, Is rotatably supported by a shaft 92 inserted therethrough, and the other end extends to the lever hooking portion 90c. Reference numeral 93 denotes a transmission lever, which is formed in a U-shape.
3 is rotatably supported by a shaft 94 inserted through the mounting hole 87. One end 93a located above the transmission lever 93 is inserted into the engagement hole 40a of the rear shaft 42, and the other end 93b located above the transmission lever 93 is
It is in contact with the operation lever 91.

Accordingly, when the operation lever 91 is rotated around the shaft 92 in the direction C (valve opening direction), the operation lever 9
By the valve opening operation of 1, the transmission lever 93 rotates clockwise, the valve shaft 40 slides in the direction B, the main valve body 21 separates from the valve seat member 15, and the valve mechanism 23 opens. . As a result, the oil liquid sent to the oil supply nozzle 81 via the oil supply hose 28 passes through the oil flow path 19 in the nozzle body 83, and is supplied from the discharge pipe 16 to the oil supply port of the fuel tank.

As described above, the refueling nozzle 81 includes the grip 82 and the nozzle lever 26 with the grip 90 and the operation lever 9.
1. By replacing the transmission lever 93, it is possible to easily change from a pistol type refueling nozzle to a lever type refueling nozzle. Therefore, the refueling nozzle 81 attached to the weighing machine already installed can be easily changed from a pistol-type refueling nozzle to a lever-type refueling nozzle in response to a request from the refueling station, and the lever-type refueling nozzle can be changed from the lever-type refueling nozzle to the pistol-type refueling nozzle. Can be easily changed.

In the above-described embodiment, the configuration in which the automatic valve closing mechanism having the diaphragm is provided on the side surface of the nozzle body is described as an example. However, the present invention is not limited to this. It is needless to say that the present invention can also be applied to a configuration in which is attached.

[0066]

As described above, according to the first aspect of the present invention,
Since the inlet is provided so as to be coaxial with the automatic valve closing mechanism, the rotational moment acting on the inlet shaft of the rotary joint connected to the inlet due to the nozzle weight, the hose weight and the hose tension is reduced, for example, When the discharge pipe is turned upward when the refueling operation is performed, or when the discharge pipe is inclined and inserted into the refueling port of the vehicle, the refueling nozzle can be easily rotated about the inflow port, and the refueling operation can be easily performed.

According to the second aspect of the present invention, since the inlet substantially coincides with the center of gravity of the nozzle, it acts on the inlet shaft of the rotary joint connected to the inlet due to the weight of the nozzle, the weight of the hose and the tension of the hose. Rotational moment is reduced, for example, when performing a refueling operation, when turning the discharge pipe upward, or when tilting the discharge pipe and inserting it into the vehicle's refueling port, it is easy to rotate the refueling nozzle around the inflow port. It can be done easily.

According to the third aspect of the present invention, since the inflow port and the automatic valve closing mechanism are provided so as to be located on the extension of the grip, the rotational moment acting on the grip can be reduced, and the lubrication can be performed. When the discharge pipe is directed upward so that the oil does not overflow from the discharge pipe during operation, no rotational moment acts on the gripping part, and the lubrication nozzle can be gripped with relatively light force. Fatigue can be reduced.

According to the fourth aspect of the present invention, since the inflow port is provided on the side opposite to the side provided with the automatic valve closing mechanism, the position of the center of gravity of the nozzle and the point of application of the load of the refueling hose can be matched. At the same time, the left and right balance of the nozzle can be stably maintained. Therefore, when the refueling nozzle of the refueling port is inserted, not only the operation is easy, but also the nozzle can be kept in a stable state during refueling.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of an oil supply nozzle according to the present invention.

FIG. 2 is a cross-sectional view of a refueling nozzle.

FIG. 3 is an enlarged longitudinal sectional view showing an internal configuration of a refueling nozzle.

FIG. 4 is an enlarged cross-sectional view showing an internal configuration of a refueling nozzle.

FIG. 5 is a side view when the refueling nozzle is in a horizontal state.

FIG. 6 is a side view showing a state in which a discharge pipe of a refueling nozzle is directed upward.

FIG. 7 is a side view showing a state in which the discharge pipe of the refueling nozzle is inclined with the discharge pipe facing upward.

FIG. 8 is a longitudinal sectional view showing a first modification of the seal structure of the valve shaft.

FIG. 9 is a longitudinal sectional view showing a second modification of the seal structure of the valve shaft.

FIG. 10 is a longitudinal sectional view showing a third modification of the seal structure of the valve shaft.

FIG. 11 is a view of a third modification of the seal structure of the valve shaft as viewed from the axial direction.

FIG. 12 is a longitudinal sectional view showing a fourth modification of the seal structure of the valve shaft.

FIG. 13 is a side view of a spring receiver according to a fourth modification.

FIG. 14 is a front view of a spring receiver according to a fourth modification.

FIG. 15 is a longitudinal sectional view showing a modified example of the refueling nozzle.

FIG. 16 is a longitudinal sectional view showing a state in which a lever type refueling nozzle is changed.

FIG. 17 is a side view showing a state in which a conventional pistol-type refueling nozzle is horizontal.

FIG. 18 is a side view showing the position of the center of gravity of the nozzle when holding the conventional pistol type refueling nozzle.

FIG. 19 is a side view showing a moment acting on a conventional pistol-type refueling nozzle.

[Explanation of symbols]

 11, 81 Refueling nozzle 12 Grip 13 Nozzle body 14 Joint 15 Valve seat member 16 Discharge pipe 17 Pipe connecting member 19 Oil passage 20 Negative pressure generating part 21 Main valve element 23 Valve mechanism 26 Nozzle lever 27 Valve element 28 Oil supply hose 32 Air introduction Hole 33 Suction pipe 40 Valve shaft 41 Front shaft 42 Rear shaft 51 Automatic valve closing mechanism 53 Diaphragm chamber 54 Diaphragm 55 Engaging member 56 Piston 61 Packing groove 62 Seal member 82 Grip 83 Nozzle body 91 Operating lever 93 Transmission lever

Continuation of front page (72) Inventor Jun Watanabe 1-6-3 Fujimi, Kawasaki-ku, Kawasaki-shi, Kanagawa Tokiko Corporation

Claims (4)

[Claims] 1. An inflow port to which an oil supply hose is connected and into which an oil liquid fed through the oil supply hose flows, an outflow port through which the oil liquid flowing into the inflow port flows out to a discharge pipe, and the inflow port And a valve body for opening and closing a flow path formed between the and the outlet.
An automatic valve closing mechanism that locks the valve body at the valve opening position by a valve opening operation, releases the locking of the valve body by a negative pressure generated by a Venturi effect in the flow path, and performs a valve closing operation. In the refueling nozzle, the inflow port is provided so as to be located coaxially with the automatic valve closing mechanism. 2. An inflow port to which an oil supply hose is connected and into which the oil liquid sent through the oil supply hose flows, an outflow port through which the oil liquid flowing into the inflow port flows out to a discharge pipe, and the inflow port And a valve body for opening and closing a flow path formed between the and the outlet.
An automatic valve closing mechanism that locks the valve body at the valve opening position by a valve opening operation, releases the locking of the valve body by a negative pressure generated by a Venturi effect in the flow path, and performs a valve closing operation. In the refueling nozzle, a diaphragm responsive to a negative pressure is provided in the automatic valve closing mechanism, and the inlet is provided at a position where a projected area of the inlet overlaps at least a projected area of the diaphragm. And refueling nozzle. 3. An inflow port to which an oil supply hose is connected and into which the oil liquid sent through the oil supply hose flows, an outflow port through which the oil liquid flowing into the inflow port flows out to a discharge pipe, and the inflow port And a valve body for opening and closing a flow path formed between the and the outlet.
An automatic valve closing mechanism that locks the valve body at the valve opening position by a valve opening operation, releases the locking of the valve body by a negative pressure generated by a Venturi effect in the flow path, and performs a valve closing operation. In the refueling nozzle, the refueling nozzle is characterized in that the inflow port and the automatic valve closing mechanism are provided so as to be located on an extension of a grip portion. 4. An inflow port to which an oil supply hose is connected and into which the oil liquid sent through the oil supply hose flows, an outflow port through which the oil liquid flowing into the inflow port flows out to a discharge pipe, and the inflow port And a valve body for opening and closing a flow path formed between the and the outlet.
An automatic valve closing mechanism that locks the valve body at the valve opening position by a valve opening operation, releases the locking of the valve body by a negative pressure generated by a Venturi effect in the flow path, and performs a valve closing operation. In the refueling nozzle, the inflow port is provided on a side surface opposite to a side surface on which the automatic valve closing mechanism is provided.