JP2001330240A - Cartridge tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the attaching and detaching work of an oil feed cap, and ensure to secure the tightened condition of the oil feed cap. SOLUTION: A cartridge tank is provided with a tank main body 11, an oil feed opening 13, a metal cap 14 blocking the oil feed opening 13 by the engagement with a screw part 13a formed in the outer periphery of the oil feed opening 13, the first gear joint 17 provided to cover the metal cap 14, the second gear joint 18 provided to engage with the first gear joint 17 by the predetermined spring pressure, a spring 19 and an oil feed cap flange 20 holding one side of this spring 19 and rotating the metal cap 14, and the first gear joint 17 and the metal cap 14 have such a constitution that they have idle rotation by the portion of a preset angle range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge tank having a lubrication cap with a built-in ratchet mechanism.

[0002]

2. Description of the Related Art Conventional cartridge tanks of this kind are:
As shown in FIGS. 16, 17 and 18, a fuel supply port 2 for supplying fuel is provided at an appropriate position in the tank body 1, and a fuel supply cap 4 having a valve mechanism 3 is attached to the fuel supply port 2.
The end face 2a is sealed by a sealing surface 3c provided on the oil supply cap 4 so that the oil supply port 2 is kept open and closed via the valve mechanism 3. When the device 5 is set in the tank storage space 6, the oil supply port 2 is placed on the oil receiving tray 7 with the oil supply port 2 facing downward, so that the valve seat 3 b is provided by the valve push-up pin 8 provided in the oil receiving tray 7.
Is pushed up, the valve mechanism 3 is forcibly opened, the fuel in the tank body 1 is supplied to the oil receiving tray 7, and when the oil level in the oil receiving tray 7 reaches the discharge port 9 of the valve mechanism 3, the fuel is discharged from the tank body 1. Supply of fuel stops. Then, when the fuel in the oil receiving tray 7 is consumed and the oil level decreases, the supply of the fuel from the tank body 1 is started again. By this repetition, the supply of fuel from the tank body 1 to the oil receiving tray 7 is performed.

Next, when the fuel in the tank body 1 is consumed and needs to be replenished, the tank body 1 is taken out of the equipment 5 so that the valve push-up pin 8 is separated from the valve mechanism 3 and the valve mechanism 3 is built in. When the valve seat 3b is brought into close contact with the discharge port 9 by the spring 3a, the valve seat 3b is closed, thereby preventing the fuel from flowing out of the tank body 1. In this state, the tank body 1 is turned over, the oil supply cap 4 is turned upward, the oil supply cap 4 is held and loosened, and the oil supply cap 2 is removed. After the fuel is supplied from the fuel filler 2, the fuel filler cap 7 is attached to the fuel filler 2 with the fuel filler cap 4.
Supply to the factory is started.

[0004]

However, in the conventional configuration, the oil supply cap 4 is close to the liquid surface when the oil supply cap 4 is set on the device 5, and the oil rebounds and the evaporated oil at the time of setting the oil on the surface of the oil supply cap 4. When the oil supply cap 4 is attached to the oil supply port 2 and is fastened by holding the oil supply cap 4 itself, the oil attached to the surface becomes slippery and a normal tightening state cannot be secured. In addition, there is also a problem that oil on the surface of the refueling cap 4 adheres to hands and causes discomfort.

If the tank body 1 is reversed and the fuel filler cap 4 is turned downward if the tightening state is poor, the fuel filler cap 4 may come off, or the end face 2a of the fuel filler port 2 and the seal face of the fuel filler cap 4 may be removed. There is a problem that fuel leaks due to imperfect sealing of 3c, the fuel in the tank body 1 flows out at one time, and the fuel overflows from the oil tray 7 on the equipment 5 side. For example, an oil stove or the like is burned in a state where the stove is opened indoors. Therefore, when the above-described phenomenon occurs, there is a risk that an extremely unsafe state may be caused.

In order to prevent an unsafe state due to kerosene spill in a petroleum stove such as a petroleum stove that burns indoors, a method of automatically extinguishing the petroleum combustor when the cartridge tank is removed is described. Is generally adopted. However, the oil combustor immediately after the fire was extinguished is in an extremely hot state, and if kerosene is applied to the oil combustor after the fire is extinguished due to the problem of the oil filler cap being removed, it may reignite and start burning, The method of extinguishing the fire at the time of refueling was not a complete measure.

In addition, the state of tightening of the oil filler cap 4 to the oil filler port 2 in the conventional configuration is determined by the sense of the person who tightens the oil, and it is very difficult to confirm the state. Was remarkable. In other words, there is a natural difference in the tightening state between a case where a relatively weak person such as an elderly person or a young person performs replenishment work and a case where a powerful person such as an adult man performs replenishment work. There is a higher probability that an insecure state as described above is caused when a person without power performs replenishment work. The tendency appears remarkably.

[0008] In addition, due to the individual difference in the tightening state, there is also a problem in removing the fuel filler cap. In other words, if a strong person tightens strongly and then a weak person performs replenishment work, on the contrary, difficult work is required when removing the refueling cap. If it is slippery, it will make it especially difficult to remove it.
There is also a problem that it becomes extremely inconvenient.

Further analysis of an accident relating to refueling work that occurred in the past shows that after refueling the tank body 1, the refueling cap 4 is tightened, and when the reversing is mounted on the equipment 5, the refueling cap 4 and the handle are reversed. Occasionally, a state may occur in which a twisting force acts and the refueling cap 4 rotates in the loosening direction. If the fuel supply cap 4 is attached to the device 5 in this state, the refueling cap 4 is incompletely tightened. As described above, the fuel is removed from the refueling cap 4 or the fuel is discharged from the oil receiving tray 7 due to incomplete sealing. There is a problem that overflow occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and enables easy attachment and detachment of a refueling cap and a constant tightening strength so that a long-term replenishment operation can be performed by anyone. In order to ensure that the refueling cap can be safely and securely attached and detached, and to provide play between the refueling cap attaching and detaching operations, and to prevent careless loosening of the refueling cap from starting, an aging society The present invention is to provide a cartridge tank that can be used safely by elderly people as the technology progresses.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a tank body, an oil supply port provided at an appropriate position of the tank body, a screw portion formed on the outer periphery of the oil supply port, and The fuel filler cap is configured by a fuel filler cap body that closes the fuel filler port by screwing, the fuel filler cap body is a metal cap that is directly screwed with a screw portion on the tank body side, and a first gear coupling that contacts an outwardly facing flange surface of the metal cap. A second gear joint provided so as to mesh with the first gear joint with a predetermined spring pressure, a spring pressing and holding the second gear joint against the first gear joint, and holding one of the springs An oiling cap flange for rotating the oiling cap main body, wherein the first gear coupling and the metal cap are determined by a groove provided on the first gear coupling and a projection provided on an outward flange of the metal cap; It is constituted to slide rotation angle range fraction is.

According to the above invention, the attachment / detachment of the oil supply cap body to / from the tank body is performed by gripping and rotating the oil supply cap flange, and the oil supply cap flange is formed by the first gear coupling, the second gear coupling and the spring. Since it is integrated with a metal cap which is screwed directly to the screw part on the tank side via the ratchet mechanism to be configured, when a tightening torque of a predetermined value or more is applied according to the set pressure of the spring at the time of tightening, the first gear coupling And the second gear joint idles,
Regulate the tightening of the lubrication cap and maintain the specified tightening strength.

In this idling, when the teeth of the first gear coupling and the second gear coupling shift and mesh again, an intermittent impact or vibration or a change in the tightening torque is generated, so that the user may receive the impact or vibration or The user can be prompted to tighten the oil supply cap until the change in torque is felt, and the tightening state can be confirmed in a manner that the change in feel can be felt very sensitively by a person. Therefore, no matter who performs replenishment work, it is possible to ensure that the lubrication cap is tightened more than the closed position, eliminate insufficient lubrication cap tightening, and prevent oil leakage due to detachment of the lubrication cap and incomplete sealing. Therefore, it is possible to eliminate the problem that the liquid in the tank body flows out at once and the problem that the overflow occurs on the oil pan side.

Further, when the oil supply cap body is rotated and removed from the tank body, the screw must be rotated only for a predetermined angle range between the first gear coupling and the metal cap before the screw is removed. Since the part starts to loosen, in an accidental operation other than the intentional loosening of the refueling cap, the cap is never suddenly loosened, the sealing performance is impaired, and the liquid inside the tank does not flow out.

Further, since the oil supply cap flange, which is a part to be touched by hand, is located at a position distant from the liquid surface, the liquid does not adhere to the oil supply cap, and the hand becomes dirty or slips when the oil supply cap is rotated. Can be reduced, and the workability is greatly improved.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is characterized in that a tank body, an oil supply port provided at an appropriate position in the tank body, a screw portion formed on the outer periphery of the oil supply port, and a screw engagement with the screw portion. The fuel supply cap unit is configured by a fuel filler cap body that closes the fuel filler port. The fuel filler cap unit includes a metal cap that directly screws with a screw portion on the tank body side, a first gear coupling that contacts an outward flange surface of the metal cap, A second gear joint provided so as to mesh with the first gear joint by the spring pressure of the first gear joint, a spring for pressing and holding the second gear joint against the first gear joint, and a refueling cap unit for holding one of the springs The first gear coupling and the metal cap are determined by a groove provided on the first gear coupling and a projection provided on the outward flange of the metal cap. Only time range component is configured so as to slide and rotate.

The attachment / detachment of the oil supply cap body to / from the tank body is performed by gripping and rotating the oil supply cap flange, and the oil supply cap flange is a ratchet mechanism comprising a first gear coupling, a second gear coupling and a spring. And a metal cap that is screwed directly to the threaded portion on the tank side via the first gear joint and the second gear when the tightening strength exceeds a predetermined value according to the set pressure of the spring. The joint idles, restricting the tightening of the oil filler cap, and maintaining a predetermined tightening strength.

In this idling, when the teeth of the first gear coupling and the second gear coupling are disengaged and re-engaged, an intermittent impact or vibration or a change in tightening torque is generated, so that the user may receive the impact or vibration or The user can be prompted to tighten the oil supply cap until the change in torque is felt, and the tightening state can be confirmed in a manner that the change in feel can be felt very sensitively by a person. Therefore, no matter who performs replenishment work, it is possible to ensure that the lubrication cap is tightened more than the closed position, eliminate insufficient lubrication cap tightening, and prevent oil leakage due to detachment of the lubrication cap and incomplete sealing. Therefore, it is possible to eliminate the problem that the liquid in the tank body flows out at one time and the problem that the overflow occurs on the oil receiving side.

Further, when the oil supply cap body is loosened and removed from the tank body, the screw portion must be loosened for the first time after the play rotation of the first gear coupling and the metal cap has been performed for the angle range determined. In order to start, in an accidental operation other than intentionally loosening the refueling cap, the cap is never accidentally loosened and the sealing performance is impaired, so that the liquid inside the tank does not flow out.

Further, since the oil supply cap flange, which is a portion to be touched by hand, is located at a position away from the liquid surface, liquid does not adhere to the oil supply cap, and the hand becomes dirty or slips when the oil supply cap is rotated. Can be reduced, and the workability is greatly improved.

According to a second aspect of the present invention, in the assembling step of the fuel filler cap main body, the fitting means of the metal cap and the fuel filler cap flange is made of resin with respect to a flange formed by drawing the metal cap. Is press-fitted into a cylindrical slit-type claw portion at the center of the refueling cap flange to prevent it from coming off.

After the spring, the second gear joint, and the first gear joint are sequentially mounted on the oil supply cap flange, the metal cap is press-fitted and locked by the flange shape and the slit-type claw portion to be integrated. While simplifying the configuration,
As the locking means, resin insert molding and pipe expansion caulking are not required, and there is no need to worry about deformation of the screw portion at the time of processing, and the processing cost is low.

According to the third aspect of the present invention, by using a surface-treated steel plate or a lubricating steel plate as the material of the metal cap, the plating treatment performed for the rust prevention effect on the metal surface is not required.

According to the fourth aspect of the present invention, since the first gear joint and the second gear joint are configured to have a wall on the outer periphery or the inner periphery, foreign matter can enter the contact tooth surface of each gear joint. And the rigidity of each gear joint can be improved.

According to the fifth aspect of the invention, since the relationship between the metal cap and the first gear coupling is not surface contact but line contact or point contact, the lubrication cap slides when it rotates. If the frictional resistance is reduced by reducing the contact area of the oil supply cap, there is an advantage that the resistance torque at the time of rotating the fuel supply cap body by play is low, and the burden of turning by hand is small.

According to the sixth aspect of the present invention, since the second gear coupling made of resin is made of resin of sliding grade, sliding when the ratchet mechanism is operated becomes smooth, and the ratchet operation is performed. Discomfort at the time,
It has the effect of preventing an increase in torque, malfunction, and the like, and greatly reducing squeak noise generated by friction between resins during ratchet operation.

In the invention described in claim 7, since both the first gear joint and the second gear joint made of resin are configured to use a sliding grade, the spring used for the ratchet mechanism of the oil supply cap is provided. It is possible to reduce the variation of the ratchet operating torque generated due to the variation of the load.

According to an eighth aspect of the present invention, the width of all other grooves provided in the oil supply cap flange is smaller than the coil outer diameter of the spring so that the spring is not attached to a position other than the predetermined position of the oil supply cap flange. Therefore, there is no danger of producing a defective product due to the refueling cap body being assembled while the spring is erroneously attached to a portion other than the predetermined portion.

According to the ninth aspect of the present invention, since the wall portion is provided on the outermost periphery at the top surface of the fueling cap flange, the liquid attached to the inside and near the center of the fueling cap flows out, and This has the effect of preventing the hands and the like of the worker from being stained.

According to the tenth aspect of the present invention, since a hole communicating with the inside of the oil supply cap flange is provided on the top surface of the oil supply cap flange, there is no fear that kerosene will accumulate inside the oil supply cap main body. This has the effect of preventing kerosene from leaking and soiling the hands of workers.

According to the eleventh aspect of the present invention, since a ring can be attached to the outer periphery of the cylindrical slit-type claw portion at the center of the oil supply cap flange, the locking shape of the claw portion is ensured in a good balance over the entire circumference. As a result, the reliability and durability against the deformation of the claws can be improved.

According to the twelfth aspect of the present invention, since the thickness of the cylindrical slit-type claw portion at the center of the refueling cap flange gradually increases from the root of the slit toward the distal end, the refueling cap main body is formed. This has the effect of preventing the nail portion from being damaged due to bending at the time of assembling the cap body, while securing the strength of the resin nail portion for connecting the resin nail.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a main part of a fuel supply cap body according to a first embodiment of the present invention, FIG. 2 is a structural view of a cartridge tank, and FIG. FIG. 4 is a main part configuration diagram of a fueling cap main body.

11 is a tank body for storing fuel, 12
Is an oil meter for checking the amount of fuel in the tank body 11,
Reference numeral 13 denotes a filler port for replenishing and flowing fuel to the tank main body 11, reference numeral 13a denotes a screw portion provided on an outer peripheral portion of the filler port 13, reference numeral 14 denotes a metal cap detachably provided on the filler port 13, and reference numeral 14a denotes a metal cap. The provided screw portion, 15 is a flange portion provided on a metal cap having an effect of preventing the components from being disassembled so as to prevent the components from being disassembled, 16 is an outward metal flange having a shape in which an open end of the metal cap is protruded in an outer radial direction, 16
a is a protrusion fixed upward to the metal cap, 17 is in contact with the outward metal flange 16 and has a groove 17a opposed to the protrusion 16a provided on the metal flange, and is slid by a predetermined angle range. The first gear joint 18 which is configured to be dynamically rotated is a second gear joint provided so as to mesh with the first gear joint 17 with a predetermined spring pressure, and 19 is a second gear joint 18 which is connected to the first gear joint 17. The spring 20 for pressing and holding is an oil supply cap flange for holding one of the springs 17 and for turning the metal cap 14 in a detachable manner, and is a portion actually held by a user of the cartridge tank. The inside of the refueling cap flange 20 has a second
A concave shape corresponding to the convex shape provided on the gear joint 18 is provided, and is configured to slide vertically with the second gear joint 18. The first gear joint 17 and the second gear joint 18 have a ratchet mechanism that meshes in a sawtooth gear shape, and the first gear joint 17 and the second gear joint 18
By locking the gear joint 18 with a predetermined spring pressure, the friction mechanism is provided only in one direction of the tightening direction. In other words, when the rotating torque in the tightening direction is greater than the sliding resistance determined by the spring pressure, the first torque is applied.
The gear joint 17 and the second gear joint 18 rotate while the meshing state changes. The first gear joint 17, the second gear joint 18, and the spring 19 use the oil supply port 13 of the metal cap 14.
And a notification means for notifying the tightening state with respect to.

Reference numeral 21 denotes a valve mechanism provided inside the metal cap 14, which comprises a valve body 22, a valve seat 23 and a spring 24, and opens and closes a discharge port 25 of the metal cap 14. 26 is an oil pan for temporarily storing fuel for supplying fuel to the burner of the oil combustor, 27 is a socket attached to the upper opening of the oil pan 26, and a valve push-up pin 28 projects from the socket 27. It is formed.

The metal cap 14 having the valve mechanism 21, the spring 19, the second gear joint 18, and the first gear joint 17 are integrated to constitute the oil supply cap body 10.

The operation of the above construction will be described. First, when the tank body 11 is mounted on the receptacle 27 of the oil receiving tray 26 with the metal cap 14 facing downward, the valve push-up pin 28 causes the valve body 22 to oppose the spring 24. And the closing state of the discharge port 25 of the metal cap 14 by the valve seat 23 is released. As a result, the fuel in the tank body 11 is supplied into the oil receiving tray 26 via the receiving port 27, and is stored up to the oil level of the discharge port 25 of the metal cap 14. When the oil level in the oil pan 26 is reduced by consumption by the burner, air enters the tank main body 11 through the discharge port 25, and the fuel in the tank main body 11
Supplied within. This repetition keeps the oil level in the oil receiving tray 26 constant.

Next, when the fuel in the tank body 11 becomes empty, the tank body 11 is removed from the receiving port 27. At this time, the operation of the valve mechanism 21 pushing up the valve body 22 by the valve push-up pin 28 is released, so that the valve body 22 is
To return to the original state, and keeps the discharge port 25 closed via the valve seat 23. Then, the tank body 11 is carried to a refueling place, the metal cap 14 is removed, and refueling is performed by a siphon pump or the like. Since the tip of the metal cap 14 is always located in the oil, the metal cap 14
The hands are dirty when attaching and detaching, and are very disliked. For this reason, in the present invention, an oil supply cap flange 20 for removal is provided, and this oil supply cap flange 20 is formed far apart from the valve mechanism 21 of the metal cap 14, so that even if oil diffuses on the surface of the metal cap 14, The hand is prevented from reaching the cap flange 20 to prevent the hands from being stained.

The oil supply cap flange 20 is
The first gear coupling 17 fixed to the metal cap 14 and the second
Since the metal cap 14 is connected to the metal cap 14 via the ratchet mechanism constituted by the gear joint 18, the oil supply cap flange 20 and the metal cap 14 rotate synchronously in the removing direction.
By turning, the metal cap 14 can be removed.

Next, when the refueling of the tank body 11 is completed, the work of attaching the metal cap 14 to the refueling port 13 is performed. Generally, the fuel storage place is often dark and cold, such as outdoors or on a veranda. There is a psychology that the worker tries to complete the refueling operation in a short time as much as possible. For this reason, the mounting operation of the metal cap 14 is neglected, and a case occurs in which the halfway tightening is completed. Also,
Since a certain amount of force is required for the tightening work, individual differences in tightening strength appear remarkably. That is, since a strong person such as an adult male tends to tighten relatively strongly, oil leakage due to insufficient tightening is unlikely to occur. In addition, when a relatively weak person such as an elderly person or a woman performs a tightening operation, it is difficult to grasp the sense of how much to tighten, and the tightening tends to be insufficient, which may lead to oil leakage. .

Therefore, the present invention relates to the first gear joint 17 and the second gear joint 17.
Since the attachment / detachment is performed via the notification means holding the ratchet mechanism constituted by the gear joint 18 and the spring 19, when a tightening torque equal to or more than a predetermined value is applied according to the set pressure of the spring 19, the first Gear coupling 1
7 and the second gear coupling 18 rotate idly and the metal cap 14
The first gear joint 17 and the second gear joint 18 rotate idly while controlling the tightening of the metal cap 14 so that the tightening state of the metal cap 14 can be controlled by intermittent impact or vibration or tightening torque. Changes can be reported by occurrence. Therefore, the tightened state of the metal cap 14 can be reliably ensured to be higher than the closed position, and the insufficient tightening of the metal cap 14 is eliminated,
Oil leakage due to detachment of the metal cap 14 or incomplete sealing can be prevented, and a problem that the fuel in the tank main body 11 flows out at one time and a problem that overflow occurs on the oil receiving tray 26 side can be eliminated. Further, the gripping operation of the metal cap 14 can be easily performed by gripping and rotating the oil supply cap flange 20 having an outer diameter larger than that of the metal cap 14. That is, after the refueling operation, when the fuel supply cap flange 20 is gripped and rotated in the tightening direction, the tightening load is initially small, and the first
Since the notifying means having a friction mechanism formed by the gear coupling 17, the second gear coupling 18, and the spring 19 has a larger friction torque, the gear meshing change does not occur, and the oil supply cap rotating flange 20 and the metal cap 14 Rotate together. When the rotation of the metal cap 14 advances to the tightened and closed state, the metal cap 14
Is restricted.

When the oil supply cap flange 20 is further rotated from this position in the tightening direction, the second gear coupling 18
Means that a rotational torque greater than the friction torque is obtained, so that the second gear joint 18 overcomes the engagement with the first gear joint 17 and changes into engagement with the next gear. Since the first gear joint 17 and the second gear joint 18 have a saw-tooth gear shape, when the meshing changes, the second gear joint 18 gets over the gear so as to collide with the first gear joint 17. . The clamped state of the metal cap 14 is confirmed by a sound or impact generated by a collision when the vehicle gets over the gear or a torque change generated in a process of getting over the saw-tooth gear.

Since the above state is continued while the oil supply cap flange 20 is rotated in the tightening direction, the tightened state is not a vague feeling of the conventional degree of tightening, but a sound, impact and torque change. In addition to being able to always confirm the sense of hearing and feeling that can be judged, the tightening torque of the metal cap 14 can be kept constant, and the problem of overtightening or insufficient tightening can be solved.

According to the present invention, when the oil supply cap flange 20 is rotated to be removed from the tank main body 11, the groove 17a of the first gear joint is provided between the first gear joint 17 and the metal cap 14. After the idle rotation by the angle range determined by the protrusion 16a fixed to the metal cap and the rotation, the screw portion 13a of the filler port and the screw portion 14a of the metal cap begin to loosen for the first time. In an accidental operation other than an attempt to loosen the oil, the oil supply cap main body 10 does not suddenly loosen and the sealing performance is impaired, so that the oil inside the tank does not flow out.

(Embodiment 2) FIG. 5 is a sectional view of a main part of a fueling cap main body according to a second embodiment of the present invention, and FIG. 6 is a structural view of a main part of the fueling cap main body. The same parts as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described.

In FIG. 5, reference numeral 29 denotes a cylindrical slit-type claw at the center of a resin-made oil supply cap flange, 30 denotes a jaw formed by drawing a metal cap, and 16 denotes a jaw.
“b” is a projection formed by extending a part of the outward metal flange. In the second embodiment, the refueling cap body 1
In the assembly process 0, the fitting means between the metal cap 14 and the oil supply cap flange 20 press-fits the cylindrical slit-type claw portion 29 into the flange shape 30 formed by drawing the metal cap. It is a configuration to keep it off. As a method of assembling the cap body, in addition to the method described above, the jaw of the metal cap is joined to the metal cap 14 in advance by resin insert molding with the flange 15 as a separate part as in the first embodiment.
After the oil supply cap flange 20, the spring 19, the second gear joint 18, and the first gear joint 17 are mounted on the side, the open end of the metal cap 14 having a straight pipe shape is expanded and caulked outward before assembly. The metal cap 14, especially the threaded portion 14a is easily deformed when performing resin insert molding and expanding and swaging, and if it is deformed, the screwed state with the tank-side threaded portion 13a. May be unstable, and there is a problem that processing cost is high. On the other hand, the configuration described above does not deform the shape of the metal cap 14, particularly the screw portion 14a in a later step, and can assemble the fuel supply cap main body at low cost.

(Embodiment 3) By using a surface-treated steel plate or a lubricating steel plate as the material of the metal cap 14, the plating treatment conventionally performed for the rust prevention effect of the metal surface becomes unnecessary. Metal cap 1 when using a surface-treated steel sheet
In order to use a quick-drying processing oil at the time of drawing of 4,
Although a degreasing process is required after processing, it has the advantage of low cost for the plating process, and has the advantage that the processing cost is much lower because the degreasing process is unnecessary when using lubricated steel plates. Having.

Further, since the smoothness of the metal surface is superior to the plating specification, the first gear joint 17 which comes into contact with and slides with the metal cap 14, and the lubrication cap flange 20
The frictional resistance between the oil supply cap body 10 and the oil supply cap main body 10 is low, so that there is an advantage that the burden of turning by hand is small. Such an effect is greater in a lubricated steel sheet having excellent metal surface smoothness and sliding effect than in a surface-treated steel sheet.

(Embodiment 4) FIGS. 7 and 8 are detailed views of a first gear joint and a second gear joint in Embodiment 4 of the present invention.

In FIG. 7, on the gear surfaces of the first gear joint 17 and the second gear joint 18 which are in surface contact with each other in the vertical direction, the first gear joint 17 is on the inner periphery and the second gear joint 18 is on the outer periphery. By providing the wall portions 17a and 18a, foreign matter that enters the gap between the contact surfaces of the gears that constitute the ratchet mechanism is prevented, the foreign matter is prevented from interfering with the normal operation of the gear, and the spring 19 is tightened. The ratchet mechanism in which the first gear joint 17 and the second gear joint 18 idle when the tightening strength equal to or more than a predetermined value is applied in accordance with the set pressure does not have to be heavy or stop operating. Further, the strength and rigidity of each part of the gear coupling can be improved. This effect can also be obtained by providing the first gear joint 17 on the outer periphery and the second gear joint 18 on the inner periphery with walls 17b and 18b, respectively, as shown in FIG. .

(Embodiment 5) FIG. 9 is a detailed view of a first gear coupling according to Embodiment 5 of the present invention.

In FIG. 9, the shape of the first gear joint 17 on the side of contact with the metal cap 14 is not a plane but a ring-shaped projection 17c or a plurality of point projections 17d. It is configured to be contact or point contact. The contact portion between the metal cap 14 and the first gear coupling 17 must be formed between the first gear coupling and the metal cap before the screw portions when the oil supply cap main body 10 is rotated and removed from the tank main body start to loosen. It is one of the contact surfaces that slides when playing around the specified angle range.If the contact area is reduced by the shape of line contact and point contact against surface contact, if friction resistance is reduced ,
There is an advantage that the resistance torque when rotating the refueling cap body 10 in the idle rotation is low, and the burden on turning by hand is small.

(Embodiment 6) The second structure made of resin
By using a sliding-grade resin for the gear joint 18, the lubrication cap flange 20 can be used when the ratchet mechanism operates.
Has the effect of preventing discomfort during ratchet operation, increase in torque, malfunction, etc., and greatly reducing the squeak noise generated by friction between the resins during ratchet operation. .

(Embodiment 7) The first embodiment made of resin
Both the gear joint 17 and the second gear joint 18 are configured to use sliding grade resin.

FIG. 10 is a graph in which the horizontal axis represents the load value of the spring 19 and the vertical axis represents the operating torque value of the ratchet mechanism. Since both of the gears which are in surface contact with each other are of a sliding grade, when a tightening torque of a predetermined value or more is applied in accordance with the set pressure of the spring 19, the teeth shift when the ratchet is operated and the tooth surface slides when idling. The dynamic resistance decreases, and the relationship between the spring load and the ratchet operating torque changes from A to B. To obtain the same ratchet operating torque, the spring load value must be increased, but the variation D of the ratchet operating torque generated with respect to the spring load variation C can be reduced.

(Embodiment 8) FIG. 11 shows a state in which a spring 19 is mounted on an oil supply cap flange 20 according to Embodiment 8 of the present invention.

In the process of assembling the fuel cap main body 10, the widths of the grooves 20b and 20c provided on the fuel cap flange are all outside the coil of the spring 19 so that the spring 19 is not mounted at any position other than the predetermined position 20a of the fuel cap flange 20. The shape is smaller than the diameter. As a result, the spring 19 may be incorrectly attached to a part other than the predetermined
The risk of producing a defective product is eliminated by assembling the refueling cap main body 10 while being tilted to the back of 0b and 20c.

(Embodiment 9) FIG. 12 is a sectional view of a main portion of a fueling cap body according to Embodiment 9 of the present invention. A wall portion 20d is provided at the outermost periphery on the top surface of the refueling cap flange 20. During the refueling operation or during use of the cartridge tank, the liquid adhering to the inside and near the center of the refueling cap flows out and the operator's hand Has the effect of preventing soiling.

(Embodiment 10) FIG. 13 shows Embodiment 1 of the present invention.
It is principal part sectional drawing of the oil supply cap main body of No. 0. A hole 20e communicating with the inside of the refueling cap flange is provided on the top surface of the refueling cap flange 20, and when kerosene vapor is condensed during use of the cartridge tank or accidentally spilled out of the refueling port during refueling work. Kerosene accumulated inside the oil supply cap flange 20 is constantly discharged to the outside. Oil filler cap flange 20
If the tank body 11 is inverted for refueling work while the kerosene is accumulated in the grooves 20b, 20c, etc., the kerosene inside may flow out, and the tank body 1 and the hands of the worker may be stained. According to the configuration of the present invention, there is no worry.

(Embodiment 11) FIG. 14 shows Embodiment 1 of the present invention.
It is principal part sectional drawing of 1 oil supply cap main body.

In the configuration according to the second aspect, a cylindrical slit-type claw portion 2 at the center of the oil supply cap flange 20 is provided.
The ring 31 can be attached to the outer periphery of the cylindrical claw portion 29 so that the oil supply cap main body does not decompose due to the deformation of the claw portion 9 in the outward direction, and the reliability and durability against the deformation of the claw portion can be improved. Has an effect.

(Embodiment 12) FIG. 15 shows Embodiment 1 of the present invention.
It is principal part sectional drawing of 2 oil supply cap main bodies.

In the structure according to the second aspect, a cylindrical slit-type claw portion 29 at the center of the oil supply cap flange 20 is provided.
Has a shape in which the thickness gradually increases from the root of the slit toward the distal end thereof, while securing the thickness and strength at the distal end 29a of the slit and pressing the jaw into the jaw shape 30 provided on the metal cap 14 at the time of press-fitting. When the portion is bent outward, the slit is hardly bent because the thickness of the nail portion is too thick, and the effect of preventing the base 29b of the nail portion from being damaged when trying to bend with an excessive force. Have.

[0065]

As described above, according to the cartridge tank of the present invention, it is possible to encourage the user to tighten the oiling cap until the user feels impact, vibration, or change in torque. It is possible to check the tightening state in a manner that is extremely sensitive to the user. Therefore, no matter who performs replenishment work, it is possible to ensure that the lubrication cap is tightened more than the closed position, eliminate insufficient lubrication cap tightening, and prevent oil leakage due to detachment of the lubrication cap and incomplete sealing. Therefore, it is possible to eliminate the problem that the liquid in the tank body flows out at one time and the problem that the overflow occurs on the oil receiving side.

On the other hand, when loosening, the ratchet mechanism applies a force higher than the tightening strength to loosen and facilitate removal. In addition, since the oil supply cap rotating means is located at a position distant from the liquid surface, there is no adhesion of oil splashing when the tank is set, and adhesion of evaporated oil is extremely small. The slipping state can be reduced, and the workability is extremely improved. In addition, when turning the fuel filler cap and removing it from the tank body, the screw part of the fuel filler port and the screw part of the cap begin to loosen for the first time after the play rotation of only the preset angle range has passed. In an accidental operation other than intentionally loosening the oil supply cap, the oil inside the tank does not flow out because the oil supply cap is suddenly loosened and the sealing property is impaired.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a fueling cap main body according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of the cartridge tank.

FIG. 3 is a sectional view of a main part showing a state where the tank is installed in a device.

FIG. 4 is a configuration diagram of a main part of a fueling cap of the tank.

FIG. 5 is a sectional view of a main part of a fueling cap main body according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram of a main part of a fueling cap of the tank.

FIG. 7 is a detailed view of a first gear coupling and a second gear coupling according to a fourth embodiment of the present invention.

FIG. 8 is a detailed view of a first gear coupling and a second gear coupling according to a fourth embodiment of the present invention.

FIG. 9 is a detailed view of a first gear coupling according to a fifth embodiment of the present invention.

FIG. 10 is a graph showing a relationship between a spring load and a ratchet operating torque value according to a seventh embodiment of the present invention.

FIG. 11 is a diagram showing a mounting state of a fuel supply cap flange and a spring according to an eighth embodiment of the present invention.

FIG. 12 is a sectional view of a main part of a fueling cap body according to a ninth embodiment of the present invention.

FIG. 13 is a sectional view of a main part of a fueling cap main body according to a tenth embodiment of the present invention.

FIG. 14 is a sectional view of a main part of a fueling cap body according to an eleventh embodiment of the present invention.

FIG. 15 is a sectional view of a main part of a fueling cap main body according to a twelfth embodiment of the present invention.

FIG. 16 is a configuration diagram of a conventional cartridge tank.

FIG. 17 is a configuration diagram showing a state where a conventional cartridge tank is installed in a device.

FIG. 18 is a cross-sectional view of a main part showing a state where a conventional cartridge tank is installed in a device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Refueling cap main body 11 Tank main body 13 Refueling port 13a Refueling port screw part 14 Metal cap 14a Metal cap screw part 15 Flange part 16 Metal flange 16a Projection part 17 1st gear coupling 17a Groove 18 Second gear coupling 19 Spring 20 Lubrication cap flange

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toru Harada 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) 3E084 AA05 AA12 AB04 BA02 CA01 CB02 CC01 DA01 DB12 DC01 FA09 FB02 GA04 GB04 KB01 LD03 LD16 3K068 AA11 CB03 CB12

Claims (12)

[Claims] 1. A fuel tank comprising: a tank body; a filler port provided at an appropriate position in the tank body; a screw portion formed on an outer periphery of the filler port; and a fuel filler cap body that closes the filler port by screwing into the screw portion. The refueling cap body includes a metal cap directly screwed with a threaded portion on the tank body side, a first gear joint that contacts an outward flange surface of the metal cap, and the first gear joint with a predetermined spring pressure. A second gear joint provided so as to mesh with the first gear joint, a spring for pressing and holding the second gear joint against the first gear joint, and an oil supply cap flange for holding one of the springs and rotating the oil supply cap main body, The first gear coupling and the metal cap are slid and rotated by an angle range determined by a groove provided on the first gear coupling and a projection provided on an outward metal flange of the metal cap. Cartridge tank for the butterflies. 2. A fitting means for fitting a metal cap and an oil supply cap flange includes a cylindrical slit-type claw at the center of a resin oil supply cap flange with respect to a flange formed by drawing a metal cap. 2. The cartridge tank according to claim 1, wherein the cartridge tank has a configuration in which it is prevented from coming off by press-fitting. 3. The cartridge tank according to claim 1, wherein a surface treated steel plate or a lubricated steel plate is used as a material of the metal cap. 4. The cartridge tank according to claim 1, wherein each of the first gear coupling and the second gear coupling has a wall portion on an outer periphery or an inner periphery thereof. 5. The contact form between the metal cap and the first gear coupling is not surface contact but line contact or point contact.
Or the cartridge tank according to 2. 6. A second gear coupling made of resin,
3. The cartridge tank according to claim 1, which is a sliding grade. 7. The cartridge tank according to claim 1, wherein both the first gear coupling and the second gear coupling made of resin are sliding grades. 8. The oil supply cap flange according to claim 1, wherein the width of all other grooves provided in the oil supply cap flange is smaller than the outer diameter of the coil of the spring so that the spring is not attached to a position other than a predetermined position of the oil supply cap flange. Or the cartridge tank according to 2. 9. The cartridge tank according to claim 1, wherein a wall portion is provided at an outermost periphery in a top surface portion of the oil supply cap flange. 10. The cartridge tank according to claim 1, wherein a hole communicating with the inside of the oil supply cap flange is provided in the top surface of the oil supply cap flange so that liquid does not accumulate inside the oil supply cap main body. 11. The cartridge tank according to claim 2, wherein a ring can be attached to an outer periphery of a cylindrical slit-type claw portion at a center portion of the fuel supply cap flange. 12. The cartridge tank according to claim 2, wherein the thickness of the cylindrical slit-type claw portion at the center of the oil supply cap flange gradually increases from the root of the slit toward the tip thereof.