JP2930609B2 - Refueling nozzle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a refueling nozzle suitable for use in a refueling device having an automatic full tank refueling function, a function of detecting nozzle insertion into a refueling port, and the like.

"Prior art" In recent years, from the aspect of labor saving and completeness of refueling work, sensors such as an insertion sensor, a liquid level sensor, and a liquid type discrimination sensor are provided at the tip of the discharge pipe of the refueling nozzle. Based on the output of this sensor, A refueling device that performs automatic refueling control is known.

In such a fueling device, an interface for transmitting a signal of the sensor to a control device or a controlled device provided in the fueling device main body is provided in the fueling nozzle.
Therefore, a storage chamber for storing the electronic circuit components constituting this interface is provided in the nozzle body of the fuel supply nozzle applied to this type of fuel supply device.

By the way, if the storage chamber is located at the tip end side of the nozzle body to which the discharge pipe is connected, when the discharge pipe is to be inserted into the fuel supply port during the refueling operation, the discharge pipe cylinder tip and the fuel supply port are shaded by the storage chamber. And the insertion work becomes troublesome,
Further, depending on the type of vehicle, due to the location of the fuel supply port in the vehicle body, the storage chamber may become an obstacle and the discharge pipe cannot be inserted into and held in the fuel supply port. Therefore, the storage chamber is provided separately from the side of the nozzle body to which the discharge pipe is connected, in consideration of such a problem.

Further, in such a refueling nozzle, the wiring of the signal line between the sensor and the electronic circuit component provided in the storage chamber is such that the contact between the discharge pipe and the refueling port and the refueling pipe at the time of refueling work, the refueling nozzle. Are connected through the inside of the discharge pipe and the inside of the nozzle body in order to prevent accidents such as disconnection due to impact or the like when accidentally falling off the fuel filler and falling to the ground.

As a result, in the refueling nozzle having a sensor on the tip side of the discharge pipe, a signal line connecting the sensor and the electronic component in the storage chamber provided in the nozzle main body is routed through the discharge pipe and the nozzle main body. For this reason, the configuration has been such that the inside of the nozzle body is guided halfway through a place where parts such as valves are installed.

[Problems to be Solved by the Invention] However, in the above-described conventional refueling nozzle, a signal line connecting the sensor and the storage chamber passes through a portion where a component such as a valve is installed, and passes through the nozzle body. Since it is designed to be guided, it takes time and labor for wiring work at the time of manufacturing and maintenance, especially when this signal line is broken and replaced, it is provided in the nozzle body. There has been a problem that the parts must be separated and removed from the nozzle body before the removal.

The present invention has been made in view of the above problems,
Wiring work during manufacturing and maintenance can be easily performed, and even if the signal line is broken, it is necessary to remove the movable parts such as valves from the nozzle body and disassemble them. It is the purpose.

Means for Solving the Problems In order to solve the above problems, the present invention provides a nozzle body provided with an oil passage therein, and a base end connected to the oil passage at a distal end of the nozzle body. And a valve provided in the nozzle body for opening and closing the oil passage, an operating lever for opening and closing the valve, and a sensor provided on the tip side of the discharge pipe. In the refueling nozzle, a storage chamber provided in the nozzle main body for storing an electronic circuit component for receiving a signal from the sensor, and a recess formed in the nozzle main body and extending from the storage chamber to the nozzle main body front end side, A signal line connected to the sensor on one side, and a signal line connected to the electronic component of the storage chamber on the other side, and the signal line passes through the inside of the discharge pipe from the sensor side and extends from the base end side of the discharge pipe. Outside And guided to the storage chamber through the recess.

In the refueling nozzle of the present invention configured as described above, a signal line from a sensor passing through the inside of the discharge pipe is led out to the outside from the base end side of the discharge pipe, and is passed through a recess formed in the nozzle body. The signal line is guided to the storage chamber, so that the signal line is not routed inside the nozzle body through a part where the components in the nozzle body such as a valve are provided, and wiring work and maintenance are facilitated. In addition, even when the signal line is disconnected, it is not necessary to remove a component such as a valve provided in the nozzle main body from the nozzle main body and disassemble it.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the overall configuration of a fueling apparatus to which the fueling nozzle of this embodiment is applied.

In the drawings, reference numeral 1 denotes a fixed type lubricating apparatus main body, which is generally constituted by a lower case 1A and an upper case 1B.
A pipe 2 whose one end communicates with an underground tank (not shown) is provided inside the lower case 1A, and a pump 4 driven by a motor 3 and a flow pipe transmitter 5 are provided in the middle of the pipe 2. A flow meter 6 and a solenoid valve 7 for refueling control are provided. The other end of the pipe 2 is connected to the base end of a hose 9 via a rotary joint 8.
The oil supply nozzle 20 of the present embodiment, which is provided with a sensor on the distal end side of a discharge pipe described later, is connected to the distal end of the oil supply pipe via a rotary joint 10. And, on the outer wall of the lower case 1A, there is provided a nozzle hook 11 for storing and mounting the refueling nozzle 20 at times other than during refueling work,
A nozzle switch that turns ON / OFF by removing / returning the refueling nozzle 20 to / from the nozzle hook 11
12 are attached. Further, the upper case 1B is provided with a display 13 for displaying refueling data such as a refueling amount, a refueling amount, a refueling unit price, and the like. Further, the upper case 1B controls the drive / stop of the motor 3 based on the ON / OFF of the nozzle switch 12 at the time of refueling work, so that the ON / OFF of the nozzle switch 12 and the refueling nozzle 20 will be described later. The solenoid valve 7 is controlled to open / close based on a detection signal of a sensor provided on the tip side of the discharge pipe, and a flow rate pulse output from the flow rate pulse transmitter is counted to calculate refueling data. Is provided with a control device 14 for driving and controlling the display device 13 to display the display. The detection signal of a sensor provided on the tip side of a later-described discharge pulse of the refueling nozzle 20 is transmitted to a control device 14 via a signal line provided inside the hose 9.
Has been communicated to.

Next, referring to FIGS. 2 to 6, the refueling nozzle of this embodiment will be described.
20 specific configurations will be described.

Reference numeral 21 denotes a nozzle main body, and a connection hole 22 having a circular cross section extending coaxially with the nozzle main body 21 is formed at an end 21A of the nozzle main body 21. An annular protruding step 23 having a diameter smaller than the inner diameter of the opening of the connection hole 22 is formed in the inner part of the nozzle body 21 of the connection hole 22, and through the protruding step 23,
The connection hole 22 communicates with an inflow chamber 24 formed in the nozzle body 21. The inflow chamber 24 is provided with a circular opening 25 provided on a side surface of the nozzle main body 21, and is opened outside the nozzle main body 21. Thus, an oil passage 26 is formed in the nozzle body 21 by the connection hole 22 and the inflow chamber 24.

In the nozzle body 21, an inflow chamber 24 is defined,
A valve shaft storage chamber 27 is formed. One end 27A of the valve shaft storage chamber 27 is open to the inflow chamber 24 so as to face the connection hole 22, and the other end 27B side is the rear end 21B side of the nozzle body 21 in the same direction as the nozzle body 21. And a middle portion in the longitudinal direction thereof communicates with a diaphragm chamber 28 formed on a side surface opposite to the side surface of the nozzle body 21 provided with the opening 25, and a storage chamber for storing electronic components described later. doing.

The valve shaft storage chamber 27 includes a first valve shaft member 29 having a small diameter portion 29a on one side 29A and a large diameter portion 29b on the other side 29B, and a small diameter part 29a of the first valve shaft portion 29. The fitted second valve shaft member 30 formed of an annular cylindrical member is slidably provided in the valve shaft storage chamber 27 via sleeves 31 and 32 press-fitted and fixed in the valve shaft storage chamber 27. ing.

A diaphragm chamber 28 is provided in the small diameter portion 29a of the first valve stem member 29.
A concave portion 29c is formed so as to face the large diameter portion 29b.
Is provided with a lever insertion hole 29d, and between the other end and the nozzle body 21, the first valve shaft member 29d is provided.
The spring 33 is provided so as to urge the valve shaft 27 toward the one end 27A of the valve shaft storage chamber 27. The nozzle body 21 is inserted into the lever insertion hole 29d.
Through the lever mounting hole 34 formed in the nozzle body 21
One side 35 of an L-shaped connection lever 35 pivotally supported on the
A is inserted into contact with the inner wall of the lever insertion hole 29d, and the other side 35B of the L-shaped connection lever 35 has one end side 36A at the nozzle body.
The other end side 36B is rotatably supported by the lower surface of the central portion of the nozzle 21 and extends in the direction of the rear end 21B of the nozzle body 21 and abuts on the operation lever 36 which is a free end.

On the other hand, a cutout portion 30a that can face the concave portion 29c of the first valve shaft member 29 is formed in an intermediate portion of the second valve shaft member 30, and the outer periphery of one end 30A is a valve support member. 37 is fixed. A flange portion is provided on the outer periphery of the intermediate portion of the valve support member 37.
37a is formed, and a through hole 37b extending from one end 37A to the other end 27B is formed inside. The inside diameter of the one end side 37A portion of the through hole 37b is smaller than the inside diameter of the other end side 37B portion where the one end side 30A of the second valve stem member 30 is fitted and fixed, and the boundary portion is the same as the above. The end of the small diameter portion 29a of the first valve shaft member 29 is a stepped portion 37c as a valve seat that can be contacted, and the other end 3 near the flange portion 37a of the valve support member 37.
A communication hole 37d is formed in the 7B portion in the radial direction. As a result, the end of the small diameter portion 29a of the first valve stem member 29 is
The contact between the end 37A of the through hole 37b and the communication hole 37d is cut off by contact with the through hole 37c, and the end of the small diameter portion 29a of the first valve stem member 29 is separated from the step portion 37c so that the through hole 37
b is communicated between the one end side 37A and the communication hole 37d. A valve body 38 is attached to the outer peripheral portion of the valve support member 37 on one end side 37A from the flange 37a so that the valve support member 37 can slide in the axial direction. 39 is a nut, one end side 37A of the valve support member 37.
The valve body 38 is slidably fitted to and supported by a valve support member 37. The valve body 38 has a through hole 38a through which the one end side 37A of the valve support member 37 is inserted, and an end surface of the valve support member 37 on the flange portion 37a side is an annular concave portion 38b in which the through hole 38a is opened. A communication hole 38c is formed in the bottom surface of the recess 38b to communicate the end face of the valve body 38 on the nut 39 side with the end face of the valve support member 37 on the flange 37a side. The communicating hole 38c is closed and blocked by the valve body 38 sliding on the outer periphery of the valve body support member 37 and abutting against the flange 37a, while the valve body 38 is closed on the outer periphery of the valve support member 37. By sliding toward the nut 39 and separating from the flange portion 37a, the concave portion 38 is opened and communicated. Reference numeral 40 denotes a spring provided between the valve support member 37 and the sleeve 31 which is press-fitted and fixed to the valve shaft storage chamber 27.
Of the valve shaft member 30 in the direction of the connection hole 22.

41 is a diaphragm provided in the diaphragm chamber 28,
Reference numeral 42 denotes a cap that mounts and supports the diaphragm 41 in the diaphragm chamber 28 and closes the diaphragm chamber 28 from the outside. Diaphragm chamber 28 is diaphragm 41
Thus, a negative pressure chamber 28a and a positive pressure chamber 28b are defined. Reference numeral 43 denotes a mounting plate provided on the surface of the diaphragm 41 on the cap 42 side.The mounting plate 43 is provided with pins 45 together with a U-shaped plate 44 provided on the surface of the diaphragm 41 on the valve shaft storage chamber 27 side. It is mounted and fixed. The long legs 44 of the U-shaped plate 44 extend along the axial direction of the first and second valve stem members 29, 30.
a is formed, and rollers 45, 45 are slidably provided in the elongated hole 44a. Further, a detection piece 44b of the valve displacement sensor is provided upright on a leg portion of the U-shaped plate 44 on the storage chamber side described later. 46 is the cap 42
The spring 46 urges the diaphragm 41 toward the valve shaft storage chamber 27 side. As a result,
In a state where the notch portion 30a of the second valve stem member 30 and the concave portion 29c of the first valve stem member 29 are opposed to each other, the U-shaped plate 44 also faces the first and second valve stem members 29, 30. The rollers 45, 45 provided in the elongated holes 44a are engaged with the cutout portions 30a of the second valve shaft member 30 and the concave portions 29c of the first valve shaft member 29. Therefore, when the rollers 45, 45 are engaged with the cutout portion 30a of the second valve shaft member 30 and the concave portion 29c of the first valve shaft member 29, the operation lever 36 is moved in the direction indicated by the arrow X in FIG. The first valve shaft member 29 and the second
The valve shaft member 30 is integrally slid in the direction indicated by the arrow Y in the figure, and the rollers 45, 45 are inserted into the elongated holes 44a of the U-shaped plate 44 of the nozzle body 21 as shown in FIG. The nozzle body 21 moves from the front end 21A to the rear end 21B of the nozzle body 21 as shown in FIG.

Also, a rod-shaped grip portion 4 at the rear end 21B side portion of the nozzle body 21 is provided.
The opening 48 on the rear end 21B side of the nozzle body 21 is closed by a closing member 49 in a liquid-tight manner. Reference numeral 50 denotes a lever protection frame attached to the nozzle body 21 to protect the operation lever 36. Reference numeral 51 denotes an operation lever 36 for holding the operation lever 36 at a valve-opening operation position rotated in the arrow X direction. Is a hook member for locking a free end.

On the other hand, in the connection hole portion 22 of the nozzle body 21, a joint member in which the valve seat member 52, the support member 54, and the discharge pipe 62 are press-fitted and fixed from the protruding step portion 23 to the opening side of the connection hole portion 22.
59 are provided sequentially.

First, the valve seat member 52 was provided with a step 52a ', one side of which could engage and contact the support member 54. An outer peripheral portion 52a smaller than the inner diameter of the connection hole portion 22 was formed, and the other side became a valve seat portion 52c on which the above-described valve body 38 could be seated via a stepped portion 52b engaged with and in contact with the projecting stepped portion 23. It is formed of a columnar member, and has a passage 52d formed therethrough in the axial direction. And passage 52d
One side opening is a tapered valve seat portion 52e on which an automatic valve body described later can be detached and seated, and between the valve seat portion 52e and the one outer peripheral portion 52a, an automatic valve body described later is provided. A negative pressure generating passage 53 for generating a negative pressure by a venturi action of the oil liquid flowing when the valve is opened is formed.

Next, the support member 54 has a step portion 54a 'on one side capable of engaging and contacting the joint member 59, and has an outer peripheral portion 54a having an outer diameter substantially equal to the inner diameter of the connection hole portion 22, and the other side has a connection hole portion. It consists of a columnar member that has become an outer peripheral part 54b smaller than the inner diameter of 22,
A passage 54c penetrating in the axial direction is formed inside, and a valve seat member 52 is formed in an opening of the passage 54c on the valve seat member 52 side.
A step 54c 'that can engage with and abut on the step 52a' is formed. In addition, this support member 54 is provided at the center of the passage 54c.
From one side to the other side, an air introduction pipe connecting cylinder 55 and an automatic valve body guide cylinder 56 are integrally supported and formed coaxially. The air introduction pipe connecting cylinder 55 is provided in the outer peripheral portion 54a through the passage 5.
The shaft portion 57a of the automatic valve body 57 is slidably fitted into the automatic valve body guide cylinder 56, and the automatic valve body guide cylinder 56 of the automatic valve body 57 is opened. Between the automatic valve body 57
5 that urges the valve seat member 52e to be seated on the valve seat portion 52e of the valve seat member.
8 are provided.

On the other hand, the joint member 59 is formed of a columnar member having an outer diameter substantially equal to the inner diameter of the connection hole portion 22, and a passage 59a penetrating in the axial direction is formed therein, and one end of the passage 59a is formed. The side opening has an opening diameter substantially equal to the outer diameter of the discharge pipe 62 on the base end 62B side, and the other side opening has a step 54 of the support member 54.
a '. Reference numeral 60 denotes a signal line provided between the passage 59a of the joint member 59 and the outside in order to lead a signal line from a later-described sensor disposed inside the discharge pipe 62 to the outside of the nozzle body 21. Guide holes,
61 is an extraction recess formed on the outer peripheral surface of the joint member 59.

The discharge pipe 62 is formed of a bent pipe, and its tip 62
A U-shaped notch 63 and a circular atmosphere communication hole 64 are formed in the lower surface of the A side from the opening of the distal end 62A in the direction of the base end 62B. Further, a sensor mounting member 65 and a pipe joint member 66 which are integrally formed are mounted on the notch 63 and the atmosphere communication hole 64. As shown in FIG. 5 (a), the sensor mounting member 65 has a concave groove 67 corresponding to the notch 63.
A liquid level detection sensor 68 including an ultrasonic transmitting element 68a and an ultrasonic receiving element 68b provided to face each other is provided on the side walls 67a and 67a of the concave groove 67, for example. The liquid level detection sensor 68 is such that the oil level rising with oil supply enters the concave groove 67 and the oil level comes to be interposed between the ultrasonic transmitting element 68a and the ultrasonic receiving element 68b. Is detected as a change in the signal received by the ultrasonic receiving element 68b. Further, the sensor mounting member 65
In contrast to the cutout 63 of the discharge pipe 62, a phototransistor is formed, for example, and based on a change in brightness when the discharge pipe 62 is inserted into the filler port, it is assumed that the discharge pipe 62 is inserted into the filler port. An insertion detection sensor 69 for detecting is provided.

The pipe joint member is provided inside the discharge pipe 62.
An atmosphere communication pipe 70 is provided so as to connect the atmosphere communication hole 64 of the discharge pipe 62 with the atmosphere introduction pipe connecting cylinder 55 of the support member 54 through the 66. In this atmosphere communication pipe 70,
As shown in FIG. 5 (b), a signal line 71, one end of which is connected to the liquid level detection sensor 68 and the insertion detection sensor 69, is covered by a signal line tube 72 together with the atmosphere communication pipe 70,
The discharge pipe 62 is guided to the base end 62B side. On the other hand, the discharge pipe 62
A U-shaped notch 73 is formed so as to face the signal line guide hole 60 of the joint member 59 when it is fixed to one side opening of the joint member 59. Reference numeral 74 denotes a retaining coil wound around the outer circumference of the discharge pipe 62 so that when the discharge pipe 62 is inserted into the fuel filler port, the discharge pipe 62 does not come off the fuel filler port.

2 and 4, an inflow chamber 24 is defined on the upper surface side of the nozzle body 21 where the inflow chamber 24 and the valve shaft housing chamber 27 are formed, away from the tip 21 side of the nozzle body 21; A storage chamber 75 for storing electronic components is formed to be concave. In the storage chamber 75, a valve displacement sensor 76 for detecting the operation state of the valve body 38 based on the displacement of the detection piece 44b erected on the U-shaped plate 44, a liquid level detection sensor 68, and an insertion A circuit component 77 constituting an interface circuit for transmitting and outputting a signal output from the detection sensor 69 to the control device 14 provided in the refueling device main body, and setting of various refueling operation modes according to the refueling operation progress state. A microswitch 78 for performing the operation is provided. And the circuit component 77
Are mounted on a circuit board 79 screwed into the storage chamber 75. On the circuit board 79, the other end of the signal line 71 from the liquid level detection sensor 68 and the insertion detection sensor 69 is placed in the storage chamber 75.
A terminal 80a connected via a signal line lead-out groove 75b formed in a portion of the upper opening edge 75a on the side of the discharge pipe 62, and a control device 14 of the fueling device main body, covered with a tube 81, Rotary joint connected to opening 25 of body 21
As shown in FIG. 3, a terminal 80b is connected to a signal line 81 which is guided via a liquid-tight structure (not shown) from the inflow chamber 24 to the storage chamber 75 through the inflow chamber 24 as shown in FIG. Is provided. The storage chamber 75 has a lid 84 ′, on which an operation piece 84 for operating the micro switch 78 is projected and attached, abutted against the upper opening edge 75 a, and the lid 84 ′ is attached to the nozzle body 21. On the other hand, by screwing, the signal line lead-out groove 75b is left closed.

On the other hand, on the upper surface of the connection hole 22 of the nozzle body 21,
As shown in FIG. 5 (d), a concave signal line arranging groove (recess) 85 communicating with a signal line leading groove 75b formed in the upper opening edge 74a of the storage chamber 75 is formed in the connection hole 22. Discharge pipe 62
The nozzle body 21 extends in the axial direction of the nozzle body to the side, that is, to the side of the tip 21A of the nozzle body 21. On the outer peripheral surface of the tip 21A of the nozzle body 21, a fastening member for fixing the joint member 59 to which the discharge pipe 62 is attached and fixed in the connection hole 22 is provided.
When the screw thread into which the screw 86 is screwed is fitted with the valve seat member 52, the support member 54, and the joint member 59 in the connection hole 22, the joint member
The 59 signal guide holes 60 are cut to the position in front of the facing axial position, and a screw portion 87 is formed. Further, a U-shaped notch 88 extending in the axial direction from the tip 21A of the nozzle body 21 is provided at the tip 21A of the nozzle body 21 until the signal guide hole 60 of the joint member 59 faces the signal distribution hole. It is provided coaxially with the groove 85. That is, when the fastening member 86 is screwed into the screw portion 87 of the nozzle body 21 in a state where the valve seat member 52, the support member 54, and the joint member 59 are mounted on the connection hole 22, the nozzle body 21 is formed on the nozzle body 21. A signal line guide hole formed in the joint member 59 through a deep portion of the U-shaped cutout 88 formed.
Position the screw so that the 60 faces the outside of the nozzle body 21.
87 and the cutout 88 are formed.

The other end of the signal line 71 whose one end is connected to the liquid level detection sensor 68 and the insertion detection sensor 69 is connected to a fifth terminal 89 formed in the Kanza 89 fitted in the signal guide hole 60 of the joint member 59. The storage chamber is drawn out of the nozzle main body 21 through an insertion hole 89a as shown in FIG. 9C and passes through the signal line arrangement groove portion 85 and the signal line introduction groove 75b formed in the nozzle body 21 in which the packing 90 is disposed. It is configured to be connected to terminal 80a in 75. The signal line mounting groove 85 on which the signal line 71 was mounted was closed by screwing the mounting plate 91 to the nozzle body 21, and the signal line 71 was inserted and fitted into the signal line guide hole 60. The Kanza 89 is sealed by being molded with an adhesive.

Incidentally, 92 is a protective cover for covering the nozzle body 21, 93 is a passage formed in the nozzle body 21, and when the valve seat member 52, the support member 52, and the joint member 59 are attached to the connection hole 22, Outer peripheral portion 52a of valve seat member 52 and outer peripheral portion 54b of support member 54
This is a passage formed in the nozzle main body 21 so as to communicate between the annular passage 94 formed by the inner wall of the connection hole 22 of the nozzle main body 21 and the negative pressure chamber 28a of the diaphragm chamber 28. Reference numeral 95 denotes a mounting hole formed in the nozzle body 21 so as to match with the retaining recess of the joint member 59, and reference numeral 96 denotes a retaining pin.

In the present embodiment, the refueling nozzle 20 is configured as described above. Next, assembly near the discharge pipe 62 of the refueling nozzle 20 is performed.
The disassembly method and the use method during refueling work will be briefly described below.

First, as an assembling method, the signal line 71 connected to the liquid level detection sensor 68 and the insertion detection sensor 69 and the atmosphere communication pipe 70 are covered with the signal line tube 72, and one end of the signal line 71 is attached to the sensor mounting member. While being connected to the liquid level detection sensor 68 and the insertion detection sensor 69 provided in the sensor 65, one end of the atmosphere communication pipe 70 is connected to a pipe joint member 66 integrally formed with the sensor mounting member 65. Next, the sensor mounting member 65 and the pipe joint member 66 which are mounted on the atmosphere communication pipe 70 and the signal line tube 72 and integrally formed are mounted in the discharge pipe 62 through the opening of the discharge pipe 62, and the sensor mounting member is mounted. The fitting 65 and the fitting member 66 are fitted and fixed to the notch 63 on the tip 62A side of the discharge pipe 62 and the atmosphere communication hole 64. Then, the other end of the signal line 71 in the discharge pipe is inserted through the signal line guide hole 60 of the joint member 59 and pulled out, and the signal line 71 is inserted with a kanza 89, and the kanza 89 is fitted into the signal line guide hole 60. Attach and mold-seal with adhesive while the discharge pipe 62
The base end 62B of the joint member 59 is press-fitted and fixed to one end side opening of the joint member 59,
A discharge pipe assembly is formed by integrating the discharge pipe assembly and the joint member 59. Further, the discharge pipe assembly is configured such that the other end of the atmosphere communication pipe 70 is fitted into and integrated with the atmosphere introduction pipe connecting cylinder 55 of the support member 54, and the automatic valve
Finally, as shown in FIG. 6, the connection hole assembly assembled with the discharge pipe 62, the joint member 59, the support member 54, the valve seat member 52, and the like as shown in FIG. It is configured and mounted in the nozzle body through the opening of the connection hole 22. Thereafter, a retaining pin is attached, and the clamp 59 is attached to the discharge pipe 62.
The connection hole assembly is attached to the connection hole 22 of the nozzle body 21 by being inserted from the tip 62A of the nozzle body 21 and screwed into the screw portion 87 of the tip 21A of the nozzle body 21. Also, the signal line 71
Guides the nozzle body 21 in the signal line wiring groove 85 provided with the packing 90, and connects the other end to the terminal 80 in the storage chamber 75. Then, the signal line disposing groove portion 85 is closed by attaching a lid 84.

The disassembly may be performed in an order reverse to the above order.

Next, a method of using the oil supply nozzle 20 configured as described above will be described.

When the discharge pipe 62 is inserted into the oil supply port and the operation lever 36 is opened to perform refueling, the valve body 38 is separated from the valve seat portion 52E of the valve seat member 29, whereby the operating condition of the operation lever 36 is adjusted. Is discharged from the discharge pipe 62 according to the flow rate. Then, with the progress of refueling, the liquid level rises in the refueling tank or in the refueling port, and at this time, when bubbles generated on the liquid level close the atmosphere communication hole 64 provided at the distal end 62A of the discharge pipe 62, the aforementioned The negative pressure generated by the venturi action in the negative pressure generating path 53 is no longer compensated, and the negative pressure chamber 28a becomes a negative pressure. As a result, the diaphragm 41 is displaced upward in FIG. As a result, the roller 4
The second valve stem member 30 is disengaged from the first valve stem member 29, and the second valve stem member 30 is displaced by the biasing force of the spring 40. , The valve body 38 is a valve seat member
The seat 52 is seated on the valve seat 52c. This operation is detected by the valve displacement sensor 76, and the control device 14, which has received this detection signal, closes the solenoid valve 7 provided in the refueling device main body for a predetermined period of time because the bubble disappears. It is made to valve. Then, after the elapse of the predetermined time, the control device 14
The solenoid valve 7 is opened again in order to complete accurate full tank refueling. However, at this time, since the valve body 38 is already seated on the valve seat portion 52c of the valve seat member 52 and the valve is closed, the valve body 38 can only be opened through the through hole 37b and the communication hole 37d of the valve support member. Since the oil liquid does not flow to the downstream side of the valve element 38, only a small amount of oil liquid that does not foam the liquid surface is discharged from the discharge pipe 62.

Therefore, this time, the liquid level rises as the refueling proceeds without generating bubbles as described above, and when this liquid level reaches the liquid level detection sensor 68, the liquid level detection sensor 68 outputs a liquid level detection signal. Output. Then, the control device 14 that has received the detection signal
Closes the solenoid valve 7 to stop refueling. As a result,
Accurate refueling is performed automatically.

As described above, in the present embodiment, the signal line 71 wired inside the discharge pipe 62 is connected to the proximal end 62B of the discharge pipe 62,
That is, the circuit component 77 in the storage chamber 75 is led out of the signal line guide hole 60 of the joint member 59 to which the discharge pipe 62 is attached, and passes through the signal line arrangement groove 85 formed on the upper surface of the nozzle body 21. In this case, the signal line 71 is not routed through movable parts such as the valve body 38 and the automatic valve body 57, so that wiring work and maintenance are facilitated, and when the signal line is disconnected. In addition, there is no need to disassemble the movable part.

Further, since the signal line 71 is fixed around the atmosphere communication pipe 70 by the tube 72, even if the liquid flows through the discharge pipe 62, the signal line 71 is not disconnected due to the liquid pressure, and the flow does not become a large resistance, Since the liquid level detecting cell 68 and the insertion detecting sensor 69 are fixed to the discharge pipe 62 via the sensor mounting portion 65, they do not move due to the liquid pressure.

Further, since the signal line 71 introduced from the signal line guide hole 60 is routed through the signal line arrangement groove 85 on the upper surface of the nozzle body 21, even if the refueling nozzle 20 is accidentally dropped, the signal line 71
71 does not break.

[Effects of the Invention] As described above, according to the refueling nozzle of the present invention, a storage chamber for storing electronic circuit components is provided in the nozzle body, and the signal line connected to the sensor on one side passes through the inside of the discharge pipe. At the same time, since it is configured to be introduced from the base end side of the discharge pipe to the outside and guided along the concave portion of the nozzle body to the storage chamber, a signal line can be routed through a movable part such as a valve or a long hole. This eliminates the need for wires to be inserted and wired, making wiring work and maintenance easier.Even if the signal line is broken, disassemble the movable part or insert it into a long hole for wiring. This has the effect of eliminating the need to do so.

[Brief description of the drawings]

1 to 6 are views showing one embodiment of the present invention,
FIG. 1 is a front view of a fueling device provided with a fueling nozzle of the present invention, FIG. 2 is a longitudinal sectional view of the fueling nozzle, FIG. 3 is a cross-sectional view of the fueling nozzle, FIG. 5 (a) is a sectional view of the liquid level sensor, FIG. 5 (b) is a sectional view of the inside of the signal line tube, FIG. 5 (c) is a perspective view of the Kanza, and FIG. 5 (d) is the signal line. FIG. 6 is a cross-sectional view of the nozzle main body in the vicinity of the concave groove portion in which is disposed, and FIG. 20 ... refueling nozzle, 21 ... nozzle body 62 ... discharge pipe, 38 ... valve body 52 ... valve seat member, 36 ... operating lever 71 ... signal line 77 ... circuit parts 75 ... storage chamber , 85 ... Signal line disposition groove (recess).

Claims (1)

(57) [Claims] A nozzle body provided with an oil passage therein; a discharge pipe communicating with the oil passage and having a proximal end connected to a distal end side of the nozzle body; and a discharge pipe for opening and closing the oil passage. A refueling nozzle including a valve provided in the nozzle body, an operation lever for opening and closing the valve, and a sensor provided on the tip side of the discharge pipe; a signal provided from the sensor provided on the nozzle body. And a recess formed in the nozzle body and extending from the storage chamber toward the tip of the nozzle body. One side is connected to the sensor, and the other side is an electronic component of the storage chamber. A signal line connected to the sensor line, the signal line is led out from the sensor side through the inside of the discharge pipe to the outside from the base end side of the discharge pipe, and guided to the storage chamber through the recess. A refueling nozzle characterized by becoming.