JP5806041B2 - Liquid supply nozzle - Google Patents

Description

  The present invention relates to a liquid supply nozzle, and more particularly to a liquid supply nozzle that supplies liquid by inserting a discharge pipe into a liquid supply port of a supply tank.

  For example, the liquid supply nozzle provided in the fuel supply device is configured to open the main valve by opening the nozzle lever and supply the fuel to the discharge pipe with the discharge pipe inserted into the liquid supply port. (For example, refer to Patent Document 1). Further, the nozzle body of the liquid supply nozzle has a negative pressure generating mechanism for generating a negative pressure depending on the flow rate of the fuel, a leading end communicated with an air inlet provided at a leading end of the discharge pipe, and a base end having a negative pressure generating mechanism And an automatic valve closing mechanism that closes the main valve by introducing a negative pressure as the tip of the air introduction pipe communicated with the liquid is blocked by the liquid level.

  This automatic valve closing mechanism discharges as the liquid level rises because air is supplied to the negative pressure introduction mechanism via the air introduction pipe when the air introduction port at the tip of the discharge pipe is opened after the start of liquid supply. When the air inlet at the tip of the pipe is blocked by the liquid level of the fuel, the main valve is configured to be closed by blocking air introduction from the air introduction pipe to the negative pressure generating mechanism. Yes.

JP 2008-290754 A

  In the conventional liquid supply nozzle, for example, when fuel such as kerosene is supplied to a poly container (supplied tank), the tip of the discharge pipe is inserted into the liquid supply port, and a predetermined liquid supply corresponding to the capacity of the poly container is provided. Supply liquid until the liquid level corresponding to the volume is reached. At that time, if the tip of the discharge pipe is inserted at a position shallower (higher position) than the liquid level of the predetermined supply amount, the discharge pipe discharge port is located near the supply port, so the fuel is supplied It becomes easy to scatter around the mouth.

  In order to prevent such scattering of oil, the tip of the discharge pipe is often inserted to a position deeper (lower position) than the liquid level height of a predetermined liquid supply amount. However, in a state where the tip of the discharge pipe is inserted deeply into the liquid supply port, the automatic valve closing mechanism operates to stop the liquid supply before the preset liquid supply ends. As the liquid level corresponding to the preset value is approached, the liquid supply stop by the automatic valve closing mechanism and the nozzle lever operation for starting the liquid supply are repeated, which causes a problem that the liquid supply work efficiency is low.

  In addition to the liquid supply to the plastic container, for example, when supplying liquid to a vehicle such as a motorcycle or an automobile having a urea water tank, the liquid supply nozzle is inserted deeply into the liquid supply port. There are similar issues.

  Moreover, in the description of the background art and the following embodiments, a liquid supply nozzle that supplies liquid fuel will be described as an example. However, the liquid supply nozzle for supplying liquid other than liquid fuel also includes the above-described liquid supply nozzle. Have similar issues.

  In view of the above circumstances, an object of the present invention is to provide a liquid supply nozzle that solves the above problems.

  In order to solve the above problems, the present invention has the following means.

(1) The present invention provides a discharge pipe inserted into a liquid supply port of a supplied tank to which a liquid is supplied,
A nozzle body having a main valve that is connected to a base end of the discharge pipe and is provided in the middle of the flow path of the liquid formed therein, and that opens and closes the flow path by operating a nozzle lever;
With
The nozzle body is
A negative pressure generating section that generates a negative pressure according to a flow rate of the liquid by opening the main valve;
Air is introduced through an air introduction pipe communicating with an air introduction port provided in the vicinity of the discharge port of the discharge pipe by the negative pressure generated in the negative pressure generation unit, and the air introduction port is blocked by the liquid. An automatic valve closing mechanism that closes the main valve using the negative pressure generated by the negative pressure generating unit generated by
In a liquid supply nozzle having
The proximal end is fixed to the nozzle body, and the distal end is bent in an L shape so that the direction of the distal end intersects the outer periphery of the discharge pipe, and the distal end of the discharge pipe is inserted into the liquid supply port to a predetermined depth. In this case, there is provided a regulating member that regulates the insertion depth of the discharge pipe by coming into contact with the liquid supply port.

( 2 ) The restricting member of the present invention has an L-shape extending from the nozzle body so as to extend toward the discharge pipe, and intersecting the outer periphery of the discharge pipe from the tip of the extension. And an abutting portion that abuts when the tip of the discharge pipe is inserted into the liquid supply port to a predetermined depth.

( 3 ) The extending portion of the restricting member according to the present invention is attached to a side of the nozzle body where the nozzle lever is disposed.

( 4 ) The present invention is characterized in that a gap is formed between the tip of the regulating member of the present invention and the outer periphery of the discharge pipe.

  According to the present invention, since the regulating member that regulates the insertion depth of the discharge pipe by contacting the liquid supply port when the tip of the discharge pipe is inserted into the liquid supply port to a predetermined depth is provided. It is possible to accurately insert the tip into a predetermined depth position of the liquid supply port. For this reason, the automatic valve closing mechanism is activated before the tank to be supplied is sufficiently filled with liquid, that is, before the tank is full, which can be caused by inserting the tip of the discharge pipe deep into the liquid supply port. There is no need to perform operations such as opening the nozzle lever again to fill up the tank to be supplied, or to increase the efficiency of liquid supply work. It becomes possible.

It is a side view which shows the fuel supply apparatus with which one Example of the liquid supply nozzle by this invention was applied. It is a side view which shows the positional relationship of a nozzle stand and a plastic container. It is a front view which shows the positional relationship of a liquid supply nozzle and a nozzle stand. It is a side view which expands and shows the attachment structure of a control member. It is the figure which looked at the positional relationship of a discharge pipe and a control member from the downward direction. It is a side view which shows the state which inserted the discharge pipe of the liquid supply nozzle in the liquid supply port of the plastic container. It is the top view which looked at the state which inserted the discharge pipe of the liquid supply nozzle in the liquid supply port of the plastic container from upper direction. It is a figure which shows the modification 1 of a control member. It is a figure which shows the modification 2 of a control member. It is a side view which shows the case where fuel is supplied to the fuel tank of a vehicle using the liquid supply nozzle of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Configuration of fuel supply system]
It is a side view which shows the fuel supply apparatus with which one Example of the liquid supply nozzle by this invention was applied.
As shown in FIG. 1, the fuel supply device 11 includes a weighing machine 12 and a nozzle stand 15 installed on the front side of the work table 13. The liquid supply nozzle 14 is supported on the upper end of the nozzle stand 15 so as to be adjustable to a predetermined height position that is easy to operate. A container mounting table 17 on which a poly container (supplied tank) 16 to which kerosene (fuel) is supplied is mounted on the front side of the nozzle stand 15.

  The liquid supply nozzle 14 of this embodiment is configured to be operated to the valve opening position by grasping the nozzle lever 14a, and when the hand is released from the nozzle lever 14a, the nozzle lever 14a returns to the valve closing position. Further, on the lower side where the nozzle lever 14a of the nozzle body 14c is arranged from the discharge pipe 14b, the insertion depth of the discharge pipe 14b is set when the tip of the discharge pipe 14b is inserted into the liquid supply port 16a of the plastic container 16. A regulating member 100 for regulating is provided. The regulating member 100 is bent in an L shape so that the proximal end is fixed to the nozzle body 14c and the distal end intersects the outer periphery of the distal end of the discharge pipe 14b.

  The nozzle main body 14c of the liquid supply nozzle 14 is connected to a negative pressure generating mechanism that generates a negative pressure according to the flow rate of the fuel at the time of fuel supply, and an air inlet provided at the tip of the discharge pipe. An automatic valve closing mechanism is provided that closes the main valve by introducing negative pressure as the tip of the air introduction pipe whose end communicates with the negative pressure generating mechanism is blocked by the liquid level. The automatic valve closing mechanism is a well-known technique (for example, see Japanese Patent Application Laid-Open No. 2008-290754).

  The liquid supply hose 18 communicated with the liquid supply nozzle 14 is inserted into the lower part of the work table 13 and connected to a joint 19 provided on the side surface of the weighing machine 12 so as not to obstruct the liquid supply operation.

  A customer who requests liquid supply places the plastic container 16 on the container mounting table 17 and informs the operator of the capacity of the plastic container 16 (for example, 18 liters or 20 liters). Then, the worker operates the nozzle lever 14a of the liquid supply nozzle 14 to the valve opening position to start liquid supply, and the supply amount (preset value) corresponding to the capacity of the plastic container 16 by the valve closing operation of the nozzle lever. Preset.

  The polycontainer 16 to be supplied is placed on the placement portion 17a of the container placement base 17 so that the liquid supply port 16a is at a height position where it can be easily supplied. An oil pan 17b is provided below the mounting portion 17a to collect the oil liquid in the event that the oil liquid overflows from the liquid supply port 16a of the plastic container 16.

  Further, the nozzle stand 15 is provided with an elevating mechanism 23 that supports the liquid supply nozzle 14 so as to be movable up and down.

[Configuration of nozzle stand 15]
FIG. 2A is a side view showing the positional relationship between the nozzle stand and the plastic container. FIG. 2B is a front view showing the positional relationship between the liquid supply nozzle and the nozzle stand. 2A and 2B, the nozzle stand 15 includes a fixed column 51 fixed to the floor surface, a lift column 52 that is slidably inserted into the fixed column 51 and supported so as to be movable up and down, It has a nozzle support portion 53 that supports the fuel supply nozzle 14 at the upper end of the support column 52, a grip base 54a fixed to the upper end of the elevating support column 52, and a grip 54 whose both ends are fixed to the grip base 54a. Further, the fixed column 51 and the lifting column 52 constitute the lifting mechanism 23.

  Furthermore, a cylindrical protective cover member 54b (indicated by a one-dot chain line in FIG. 2A) is attached to the lower surface of the grip base 54a. Therefore, the lifting column 52 is configured not to be exposed on the appearance by the protective cover member 54b and to prevent dust from adhering. In addition, brackets 57 and 58 connected to the container mounting table 17 are fixed to the fixed column 51.

  The regulating member 100 provided in the liquid supply nozzle 14 is formed in an L shape from a metal or a resin material, and extends in a direction intersecting the discharge pipe 14b with the extended portion 102 and the tip of the extended portion 102. The contact portion 104 is formed by being bent in an L shape.

  When liquid supply to the poly container 16 was performed using the liquid supply nozzle 14, first, the height position of the liquid supply nozzle 14 was placed on the container mounting table 17 by the lifting / lowering operation of the lifting / lowering mechanism 23 of the nozzle stand 15. The tip of the discharge pipe 14b is inserted into the liquid supply port 16a while matching the height position of the liquid supply port 16a of the plastic container 16. At that time, the liquid supply nozzle 14 inserts the tip of the discharge pipe 14b into the liquid supply port 16a, and then the contact portion 104 of the regulating member 100 contacts the upper end of the liquid supply port 16a to insert the discharge pipe 14b. Is regulated.

  Then, the nozzle lever in a state where the discharge pipe 14b of the liquid supply nozzle 14 is inserted into the liquid supply port 16a of the plastic container 16 and the contact portion 104 formed at the lower end of the regulating member 100 is in contact with the liquid supply port 16a. When the valve 14b is opened, the main valve in the nozzle body 14c is opened, and the fuel supplied from the liquid supply hose 18 is discharged from the discharge pipe 14b to the poly container 16.

[Configuration of Restricting Member 100]
As shown in FIG. 3A, the restricting member 100 is bent toward the upper side of the extension portion 102 formed to extend below the nozzle lever 14a of the nozzle body 14c and the tip of the extension portion 102. The contact portion 104. The contact portion 104 is provided with an opening 106 through which the discharge pipe 14b is inserted. Further, the base end 103 of the extending portion 102 is fixed to the lower surface of the front end side of the nozzle body 14c by the fastening member 210, and is attached integrally with the nozzle body 14c.

  The regulating member 100 is attached so that the extending portion 102 extends below the liquid supply nozzle 14, and is attached so that the liquid supply port 16a is not hidden from the operator when performing the liquid supply operation. It has been.

  In the liquid supply nozzle 14, an air introduction pipe 14f (shown by a broken line in FIG. 3A) communicated with the negative pressure generating mechanism is inserted into the discharge pipe 14b, and the tip of the air introduction pipe 14f is connected to the discharge pipe 14b. The air inlet port 14d communicates with the discharge port 14e and the contact portion 104 of the restricting member 100, and is communicated with the atmospheric air inlet port 14d. Here, the distance La between the air introduction port 14d and the contact portion 104 is shorter than the distance Lb from the discharge port 14e of the discharge pipe 14b to the contact portion 104 (La <Lb).

  The distance Lb from the discharge port 14 e of the discharge pipe 14 b to the contact portion 104 is the insertion depth of the discharge pipe 14 b in the liquid supply port 16 a of the plastic container 16.

  Accordingly, the contact portion 104 of the regulating member 100 is located above the air inlet 14d, the discharge pipe 14b of the liquid supply nozzle 14 is inserted into the liquid supply port 16a of the plastic container 16, and the regulating member 100 In the state where the abutting portion 104 is in contact with the liquid supply port 16a, the air introduction port 14d is located at an insertion depth of a distance La from the liquid supply port 16b. Therefore, during the liquid supply by the liquid supply nozzle 14, the automatic valve closing mechanism closes and the liquid supply automatically stops when the air introduction port 14d is closed due to the rise of the liquid level in the plastic container 16, so that the fuel supply is automatically stopped. Is prevented from spilling from the liquid supply port 16b.

  For this reason, according to the liquid supply nozzle 14, before the inside of the poly container 16 is sufficiently filled with the liquid, that is, it can be generated by inserting the tip of the discharge pipe 14b deep into the liquid supply port 16b, that is, the tank is full. Before the automatic valve closing mechanism is activated, the supply of liquid is interrupted, and in order to fill the inside of the plastic container 16, it is necessary to perform an operation such as opening the nozzle lever 14a again. The liquid supply work efficiency can be increased correspondingly.

  As shown in FIG. 3B, the contact portion 104 formed at the other end of the regulating member 100 is formed with a U-shaped opening 106 having a larger diameter than the outer periphery of the discharge pipe 14 b of the liquid supply nozzle 14. . A gap S is formed between the opening 106 and the outer periphery of the discharge pipe 14b, so that the opening 106 is not in contact with the discharge pipe 14b. Therefore, when attaching the regulating member 100 to the liquid supply nozzle 14, the relative alignment between the opening 106 and the discharge pipe 14 b is facilitated, and the regulating member 100 can be easily attached.

  Further, the contact portion 104 is formed in a wider shape than the diameter of the liquid supply port 16 a of the plastic container 16. Therefore, when the liquid supply by the liquid supply nozzle 14 is performed, the regulating member 100 is not easily deformed because the flat surface of the contact portion 104 is in contact with the liquid supply port 16a, and durability is enhanced.

  As shown in FIG. 4A, when the tip of the discharge pipe 14b is inserted into the liquid supply port 16a, the flat surface of the contact portion 104 of the regulating member 100 contacts the end of the liquid supply port 16a and the discharge pipe 14b. The insertion depth can be restricted to a fixed insertion height position. Accordingly, the insertion depth (Lb) of the discharge pipe 14b does not fluctuate during the liquid supply operation, and the liquid supply can be continuously performed until the liquid surface height corresponding to the capacity of the poly container 16 (amount of liquid supply) is reached. .

  Then, when the liquid level in the plastic container 16 reaches the liquid level corresponding to the capacity of the poly container 16 (capable amount of liquid supply), the air introduction hole 14d of the liquid supply nozzle 14 is blocked by the liquid level. Then, the automatic valve closing mechanism operates to stop the liquid supply.

  Thus, the liquid supply operation to the plastic container 16 is performed when the liquid supply amount reaches the preset value and the liquid supply is automatically stopped, or when the liquid supply nozzle 14 is automatically stopped by the automatic valve closing mechanism. Therefore, the liquid level in the plastic container 16 reaches the liquid level corresponding to the volume (capable amount of liquid supply). That is, for example, when the discharge port 14e at the tip of the discharge pipe 14b is inserted deeper than the predetermined depth (Lb) from the liquid supply port 16a, the liquid supply reaches a preset value after the liquid supply to the poly container 16 is started. Since it is not necessary to perform the additional liquid supply operation by opening the nozzle lever 14a of the liquid supply nozzle 14 again after being automatically stopped by the automatic valve closing mechanism before, the efficiency of the liquid supply operation is improved.

  As shown in FIG. 4B, when the liquid supply operation is performed by the liquid supply nozzle 14, the restriction member 100 is attached so as to extend below the liquid supply nozzle 14, and the contact portion of the restriction member 100 Since the opening 106 is formed in 104, the operator himself can see the state where the discharge pipe 14b is inserted into the liquid supply port 16a from above. Therefore, when performing the liquid supply operation to the poly container 16, the liquid supply nozzle 14 can be operated so that the discharge pipe 14b does not come off from the liquid supply port 16a, and the efficiency of the liquid supply operation is improved.

  Further, the contact portion 104 of the regulating member 100 is formed in a rectangular flat plate shape so as to cover the liquid supply port 16a of the poly container 16, so that the fuel discharged from the discharge pipe 14 into the poly container 16 is supplied. It is prevented from being scattered outside from the liquid port 16b.

  Further, by forming the regulating member 100 with, for example, a transparent flame retardant resin, the operator himself / herself may be able to easily see how the discharge pipe 14b is inserted into the liquid supply port 16a.

[Modified Example of Restricting Member 100]
FIG. 5A is a diagram illustrating a first modification of the regulating member. As shown in FIG. 5A, the restricting member 100A of Modification 1 is formed so that the opening 106 of the contact portion 104A fits below the discharge pipe 14b, and the upper portion of the discharge pipe 14b is opened. Therefore, when the operator inserts the tip of the discharge pipe 14b into the liquid supply port 16a, the operator can confirm the position of the tip of the discharge pipe 14b, so that the discharge pipe 14b to the liquid supply port 16a can be confirmed. Insertion is facilitated, and the efficiency of the liquid supply operation is increased.

  FIG. 5B is a diagram illustrating a second modification of the regulating member. As shown in FIG. 5B, the regulating member 100B of Modification 2 is formed in a circular shape so that the opening 106B formed in the abutting portion 104B fits the outer periphery of the discharge pipe 14b. 104B holds the outer periphery of the discharge pipe 14b all around. Further, since the regulating member 100B has a large range of contact with the liquid supply port 16a of the contact portion 104B and is reinforced by the discharge pipe 14b, when the operator inserts the tip of the discharge pipe 14b into the liquid supply port 16a. The contact portion 104B is prevented from being deformed in the pressing direction, and the insertion depth of the discharge pipe 14b can be reliably regulated.

  Further, by joining the inner periphery of the opening 106B of the contact portion 104B and the outer periphery of the discharge pipe 14b, the contact portion 104B and the discharge pipe 14b are firmly coupled to improve the durability of the regulating member 100. it can.

[Example in which the liquid supply nozzle 14 is applied to another fuel supply device]
FIG. 6 is a side view showing a case where fuel is supplied to a fuel tank of a vehicle using the liquid supply nozzle of the present invention. As shown in FIG. 6, the fuel supply device 110 supplies fuel such as gasoline or light oil to a fuel tank (supplied tank) 130 (shown by a broken line) of the automobile 120.

  Since the regulating member 100 is attached to the liquid supply nozzle 14 on the lower side where the nozzle lever 14 a is disposed, the contact portion 104 of the regulating member 100 is inserted when the discharge pipe 14 b is inserted into the liquid supply port 140 of the automobile 120. Comes into contact with the liquid supply port 140, and the insertion length of the discharge pipe 14b is regulated. Therefore, when the fuel is supplied by the liquid supply nozzle 14, the insertion depth at the tip of the discharge pipe 14b is constant, and the supply stop position by the automatic stop mechanism at the time of full tank supply is a predetermined depth position from the liquid supply port 140. Therefore, the additional liquid supply operation by the valve opening operation of the nozzle lever 14a becomes unnecessary. Therefore, the fuel supply efficiency of the liquid supply operation to the automobile 120 using the liquid supply nozzle 14 can be increased.

  Further, when the fuel is supplied by the liquid supply nozzle 14, the liquid supply port 140 is blocked by the contact portion 104 of the regulating member 100, so that the fuel is prevented from being scattered from the liquid supply port 140 during the liquid supply.

  In the above embodiment, the case where kerosene is supplied to the plastic container using the liquid supply nozzle and the case where gasoline or light oil is supplied to the fuel tank of the automobile has been described. However, the present invention is not limited to this. Of course, the present invention can also be applied to liquids other than fuel such as ethanol and ethanol.

DESCRIPTION OF SYMBOLS 11,110 Fuel supply apparatus 12 Weighing machine 14 Liquid supply nozzle 14a Nozzle lever 14b Discharge pipe 14c Nozzle main body 15 Nozzle stand 16 Poly container 16a Liquid supply port 18 Liquid supply hose 23 Lifting mechanism 100, 100A, 100B Control member 102 Extension part 104, 104A, 104B Abutment portion 106, 106A, 106B Opening portion 120 Automobile 130 Fuel tank 140 Liquid supply port

Claims (4)

A discharge pipe inserted into a liquid supply port of a supplied tank to which liquid is supplied;
A nozzle body having a main valve that is connected to a base end of the discharge pipe and is provided in the middle of the flow path of the liquid formed therein, and that opens and closes the flow path by operating a nozzle lever;
With
The nozzle body is
A negative pressure generating section that generates a negative pressure according to a flow rate of the liquid by opening the main valve;
Air is introduced through an air introduction pipe communicating with an air introduction port provided in the vicinity of the discharge port of the discharge pipe by the negative pressure generated in the negative pressure generation unit, and the air introduction port is blocked by the liquid. An automatic valve closing mechanism that closes the main valve using the negative pressure generated by the negative pressure generating unit generated by
In a liquid supply nozzle having
The proximal end is fixed to the nozzle body, and the distal end is bent in an L shape so that the direction of the distal end intersects the outer periphery of the discharge pipe, and the distal end of the discharge pipe is inserted into the liquid supply port to a predetermined depth. In this case, the liquid supply nozzle is provided with a regulating member that regulates an insertion depth of the discharge pipe by contacting the liquid supply port. The restricting member is bent in an L shape so as to intersect the outer periphery of the discharge pipe from an extension portion formed to extend from the nozzle body toward the discharge pipe, and from the tip of the extension portion. liquid supply nozzle of claim 1 in which the tip of the pipe and having a contact portion that contacts when it is inserted to a predetermined depth in the liquid supply mouth. Extension of the regulating member, the liquid supply nozzle according to claim 2, characterized in that the nozzle lever of the nozzle the body is attached to arranged the side. The liquid supply nozzle according to claim 2 or 3 , wherein a gap is formed between a tip of the regulating member and an outer periphery of the discharge pipe.