JP2001065854A - Oil feeding tank device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an oil tank cap from being fastened strongly not more than necessary. SOLUTION: At a fit-in part between a grasp handle 12 and a vertical guide cylinder 13, a drive claw 19 is integrally formed on the grasp handle 12 side. An engagement relation between the drive claw 19 and the lead trail type guide rib 20 of the vertical guide cylinder 13 is provided such that after movement in an axial direction of the vertical guide cylinder 13 of the grasp handle 12 is brought into a free state, a rotation force to fasten an oil tank cap is exerted by the grasp handle 12, the drive claw 19 of the grasp handle 12 is forced into contact with a trail surface. When, in this case, a rotation force higher than a specified value is applied, a slide occurs therebetween and fastening more than necessary is not carried out. Meanwhile, when a rotation force in a direction in which the oil tank cap is removed is exerted, the drive claw 19 and a lead surface 20L make contact with each other without any slide and removal of the oil tank cap is reliably executed. Withdrawal of the oil tank cap is reliably carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling tank device for refueling a liquid fuel combustor.

[0002]

2. Description of the Related Art A conventional fuel tank apparatus of this type will be described with reference to FIG.

FIG. 3 is a cross-sectional view of a main part of a fuel tank for a fan heater, that is, a cartridge tank, which is leaned up with a fuel inlet for fueling.

In FIG. 3, 1 is a cartridge tank, 2 is a filler port of the cartridge tank 1, and 3 is a filler cap which is removably screwed into the filler port 2.

The filler cap 3 is screwed into the filler port 2 as shown in the figure, and
A stepped portion 3a is formed at a position corresponding to the upper end of the fuel supply port, and forms a contact portion with the upper end of the fuel supply port 2, and forms a holding section for a fuel supply port packing described later. Step 3a
As a result, a small diameter portion 3b having a smaller diameter than the lower end is formed at the upper end. 4 is the filler cap 3
Is a discharge port opened at the upper end of the nozzle.

The reason why the small-diameter portion 3b is formed at the upper end of the filler cap 3 and the position of the discharge port 4 is particularly changed as described above is that an oil receiving tank (not shown) and a cartridge tank are provided. 1, a distance between the cartridge tank 1 and the kerosene surface in the oil receiving tank is increased, so that a conventional oil filler cap having no small-diameter portion 3b is provided. If the kerosene level is unavoidable as it is, the increase is complemented by the extension of the small-diameter portion 3b so that the conventional kerosene level can be maintained. Therefore, if a change in the oil level does not matter, it is clear that this kind of structure is unnecessary.

Reference numeral 5 denotes a core house mounted inside the fuel filler cap 3, reference numeral 6 denotes a movable core valve provided in the core house 5 for opening and closing the discharge port 4, and reference numeral 7 denotes this movable core valve. An O-ring packing 8 is provided between the outlet 6 and the outlet 4 to ensure the hermetic sealing of the outlet 4, and 8 is a core coil spring for pressing the movable core valve 6 to the outlet 4 side.

Reference numerals 9 and 9 denote core house outlets, which are provided on the discharge port 4 side of the core house 5, and are provided in the cartridge tank 1.
Numeral 10 denotes an opening through which the kerosene flows out. Reference numeral 10 denotes an oil supply port packing that is provided between the oil supply port 2 of the cartridge tank 1 and the oil supply port cap 3 to ensure a tight seal between the two and prevent oil leakage. is there.

Reference numeral 11 denotes an auxiliary tool for attaching and detaching the fuel filler cap 3, which is provided so that the user can attach and detach the fuel filler cap 3 to and from the fuel filler port 2 of the cartridge tank 1 without directly touching the fuel filler cap 3. It is a thing.

The attachment / detachment assisting tool 11 will be described in detail. Reference numeral 12 denotes a brim-like knob handle for hanging fingers, which is made of plastic. Reference numeral 13 denotes a knob for attaching the knob handle 12 to the outside of the filler cap 3. Is a flange formed at the upper end of the lift guide cylinder 13 to prevent the handle 12 from falling off. Reference numeral 15 denotes a guide rib which is formed on the outside of a part of the wall surface of the elevating guide cylinder 13 so as to be continuously and vertically swelled in a vertical direction. This is for preventing slip rotation while allowing movement. Numeral 16 denotes a notch provided in the picking handle 12, which is engaged with the guide rib 15 to
The above-described vertical movement is possible, but the slip rotation is not possible. Although not shown in detail in FIG. 3, the notches 16 are formed at four locations at equal intervals.

Reference numeral 17 denotes a spring seat formed on the skirt portion of the filler cap 3 so as to protrude in a brim shape.
Reference numeral 8 denotes a coil spring provided between the spring seat 17 and the knob 12 to press the knob 12 toward the discharge port 4 of the filler cap 3.

In this structure, even if kerosene adheres to the vicinity of the upper end discharge port 4 of the cap 3, as long as the knob 12 is operated, the kerosene does not directly touch the fingers, so that it is safe. The filler cap 3 can be attached and removed with care.

[0013]

In this conventional example,
Although the filler cap can be attached and removed safely without soiling the fingers, the provision of the large-diameter knob can cause the filler cap to be tightened more than necessary. I am worried that there may be something. In this case, there is a danger that the screw connection between the filler port and the filler cap becomes stupid, causing oil leakage.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a main body of a cartridge tank, an oil supply port provided in the main body of the cartridge tank, and a screw hole inserted into the oil supply port. A fuel filler cap, a spring seat formed by projecting in a flange shape at one end of the fuel filler cap, a discharge port formed at the other end of the fuel filler cap, and a discharge port formed at the other end of the fuel filler cap. A movable core valve provided inside the fuel filler cap for opening and closing, a lifting guide cylinder provided in a cylindrical shape from a spring seat around the fuel filler cap to the discharge port, and a lifting guide A flange formed by projecting the end corresponding to the discharge port side of the cylinder outward, and a knob inserted between the spring seat of the elevating guide cylinder and the flange. And a rectangular driving claw protruding at a constant interval from the side of the pick-up handle toward the side of the lift guide cylinder, and an axial direction of the lift guide cylinder of the pick-up handle outside the wall surface of the lift guide cylinder. In order to allow for the movement of the lug, it is formed so as to bulge linearly in the axial direction thereof, and when the knob is rotated in the direction of removing the filler cap, there is no slippage with the driving claw 19. When the knob handle is rotated in the mounting direction of the filler cap when the knob handle is rotated in the direction of attachment of the filler cap, the lead surface is rotated in contact with the lead surface without slipping, A trail-type guide provided with a trailing surface that, when an excessive force exceeding that is applied, causes a slip in the connection between the two and interrupts the transmission of rotational force. And the ribs, to constitute a fuel supply tank device in a coil spring is installed to press the knob handle to the serial flange side always the lifting guide tube between said a knob handle spring seat.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the above-described structure, and a driving claw is integrally formed on a knob handle side of a fitting portion between a knob and an elevating guide cylinder, and the driving claw and the guide rib are engaged. The coupling relationship allows the knob handle to move in the axial direction of the lift guide cylinder, while applying a rotational force to the lift guide cylinder via the knob handle in the mounting direction of the oil filler cap to the oil filler port. Occasionally, the driving claw contacts the trail surface of the guide rib to perform rotational driving,
If a torque greater than the specified value is applied during this time, the drive claw and the connection between the trail surface will slip and drive will be interrupted, so that excessive tightening will not be performed. When a rotational force in the direction of removal from the mouth is applied, the drive claw and the lead surface of the guide rib are connected without slipping, so that the filler cap can be securely removed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The difference between FIGS. 1 and 2 and FIG. 3 is that
In FIG. 3, the engagement connection between the knob and the guide rib is
In contrast to the configuration in which rotational slip does not occur with each other, FIGS. 1 and 2 show that rotational slip can occur between the two when the fuel filler cap is attached.

This will be described with reference to FIGS. 1 and 2.
Reference numeral 9 denotes a rectangular driving claw that is provided at a fitting portion between the knob handle 12 and the elevating guide tube 13 and protrudes from the side of the knob handle 12 toward the elevating guide tube 13 at a constant interval.

Reference numerals 20 denote lead trail-type guide ribs formed at four locations on the outer wall surface of the elevating guide cylinder 13 so as to bulge linearly upward and downward toward the knob handle 12, as shown in FIG. When the knob handle 12 is driven to rotate in the direction of removing the filler cap 3, that is, in the opening direction of the arrow in FIG. 2, the lead surface 20 </ b> L that is driven to rotate without contact with the driving claw 19, and conversely, the knob handle When the fuel cell 12 is driven to rotate in the direction in which the filler cap 3 is attached, that is, in the direction indicated by the arrow in FIG. The trail surface 20 </ b> T is configured such that when an excessive force is applied, slippage occurs in the connection between the trailing surfaces and the transmission of the rotational force is interrupted.

The number of the lead trail type guide ribs 20 formed on the lifting guide cylinder 13 and the number of the drive claws 19 of the knob handle 12 depend on the material of the lifting guide cylinder 13 and the knob handle 12 and the filler cap. Since the tightening force of No. 3 changes, it is necessary to find the best point in consideration of material costs, processing costs, operability, etc. in actual design.

In one embodiment configured as described above,
Filling port 2 to filling port cap 3 of cartridge tank 1
In order to remove the knob, when the finger is put on the knob 12 and turned to the left (in the opening direction in FIG. 2), the knob 12
The lifting guide cylinder 13 is driven counterclockwise while the driving claw 19 and the lead surface 20L of the lead trail type guide rib 20 continue to contact (without coming off). When the knob 12 is rotated the required number of times, the filler cap 3 comes off. Meanwhile, filler cap 3
The operation can be continued without touching the finger at all.

Next, a description will be given of the operation when the refueling of the cartridge tank is completed and the refueling port cap 3 is mounted on the refueling port 2. In this case, the knob handle 12 is used.
It is rotated in the closing direction (clockwise) opposite to the opening direction described above.

Then, the driving claw 19 of the knob 12 and the trail surface 20T of the lead trail type guide rib 20 are formed.
Are brought into contact with each other, and the reed trail type guide rib 20 is driven clockwise. Then, the knob 12 is rotated a required number of times, and necessary tightening is performed.
If further rotation is unnecessary, a slip occurs between the driving claw 19 and the trail surface 20T of the lead trail type guide rib 20, and the drive of the guide rib 20 by the knob 12 is interrupted. If the rotary force is continued to be applied to the picking handle 12 even after the substantial rotation of the filler cap 3 is stopped, some additional tightening will occur, but the trailing surface will be The sliding motion between the 20T and the driving claw 19 is only repeated endlessly, and the person who rotates the knob 12 feels that the operating force is increasing, and the contact is released and the load is released at once. The user feels the so-called click feeling of the state through the ears and fingers, and is notified that the mounting operation of the fuel filler cap 3 is completed.

In this way, the fuel filler cap 3 can be reliably removed without refining the fingers with kerosene during refueling, and the fingers can be stained with kerosene when the fuel filler cap 3 is attached. In addition, it is possible to reliably operate without unnecessary overtightening while using the click feeling transmitted to the fingers and ears as a guide.

When the cartridge tank 1 filled with kerosene and the mounting of the filler cap 3 is completed, the cartridge tank 1 is set in an oil receiving tank (not shown) of the liquid fuel combustor. As the oil enters and sinks into the oil receiving tank, its tip eventually reaches the oil level and comes into contact with kerosene. However, the knob 12 is blocked by the upper structure of the oil receiving tank and does not enter the tank. Therefore, the knob 12 is pressed against the cartridge tank without contact with kerosene. When the cartridge tank 1 is pulled up again from the oil receiving tank, the knob handle 12 is returned to the discharge port 4 side of the oil filler cap 3 by the coil spring 18, and the finger attached to the knob handle 12 is discharged by damp with kerosene. As a result, a situation in which it is difficult to touch the outlet 4 appears, and the fuel filler cap 3 can be attached and removed with ease.

[0026]

As described above, according to the present invention, it is possible to reliably remove the filler cap without polluting the fingers with kerosene at the time of refueling. It is possible to reliably operate without getting dirty and using the click feeling transmitted to fingers and ears as a guide and without causing unnecessary excessive tightening.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a partial cross-sectional top view of one embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a main part of a conventional example.

[Explanation of symbols]

1: cartridge tank, 2: filler port, 3: filler cap, 12: handle, 13: elevating guide cylinder, 1
9: drive claw, 20: lead trail type guide rib, 2
0L: Lead surface, 20T: Trail surface.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsushi Arai 3-1, Shinjuyoji, Kashiwa-shi, Chiba F-term in Hitachi Home Tech Co., Ltd. (Reference) 3K068 AA15 CB03 CB12

Claims (1)

[Claims] 1. A main body (1) of a cartridge tank, and a filler port (2) provided in the main body of the cartridge tank.
A filler cap (3) screwed into and attached to the filler port, and a spring seat (17) formed in a skirt at one end of the filler cap so as to protrude in a brim shape.
A discharge port (4) provided at the other end of the filler cap; a movable core valve (6) provided inside the filler cap to open and close the discharge port; An elevating guide tube (13) provided in a cylindrical shape from the spring seat portion around the outer periphery of the cap to the discharge port portion, and an end corresponding to the discharge port side of the elevating guide tube projects outward. And a handle (1) fitted between the spring seat and the flange of the lifting guide cylinder.
2), a rectangular driving claw (19) protruding from the side of the picking handle toward the lifting guide cylinder at a fixed interval, and the picking handle outside the wall surface of the lifting guide cylinder. When the knob is driven to rotate in the direction in which the filler cap is removed, the lift guide cylinder is formed so as to be continuously swelled linearly in the axial direction so as to enable the lift guide cylinder to move in the axial direction. The lead surface (20L), which is rotatably driven in contact with the driving claw (19) without slipping, and conversely, when the knob is rotated in the mounting direction of the oil filler cap, a value of a certain value or less is obtained. While the force is being applied, it is rotated and driven without slipping, and when an excessive force exceeding that is applied,
A lead trail type guide rib (20) provided with a trail surface (20T) for causing transmission of rotational force to be interrupted due to slippage in connection with each other, the knob handle and the spring seat And a coil spring (18) installed between the first and second grips and constantly pressing the knob handle against the flange side of the vertically moving guide cylinder.