CN115298475B

CN115298475B - Tank

Info

Publication number: CN115298475B
Application number: CN202180021149.6A
Authority: CN
Inventors: 中野大辅; 岩室匡祐
Original assignee: Isuzu Motors Ltd
Current assignee: Isuzu Motors Ltd
Priority date: 2020-03-27
Filing date: 2021-03-25
Publication date: 2024-01-12
Anticipated expiration: 2041-03-25
Also published as: CN115298475A; WO2021193837A1; JP7264099B2; JP2021154901A

Abstract

A storage unit capable of storing liquid is disposed in an opening formed in the bottom of the tank body corresponding to the open end of the pipe, and the storage unit includes: a lower half part which is a cylindrical body with a bottom and is detachably mounted on the opening part from below; and an upper half part which is a tubular body penetrating in the vertical direction and is connected with a lower half part from the upper side, wherein the lower half part comprises: the bottom of the lower half part is used for closing the opening part; and a lower half portion formed in a concave shape opening upward on the bottom of the lower half portion, and disposed in the vicinity of the bottom and above the opening, the upper half portion being connected to a peripheral wall portion of the upper portion of the concave lower half portion, and having a through hole communicating the inside and the outside of the cylindrical body of the upper half portion at a position above the upper end of the lower half portion.

Description

Tank

Technical Field

The present disclosure relates to a tank that stores a liquid such as fuel and is capable of extracting the liquid through a supply pipe and supplying the liquid to the outside.

Background

Conventionally, a fuel tank mounted on a vehicle has been developed, and a preparation is made for a case where a remaining amount of fuel becomes small and a liquid surface is lowered, and for example, as shown in patent document 1, a reserve tank is provided in the fuel tank as a reservoir portion capable of storing fuel. In this fuel tank, the reserve tank is suspended from above with a gap from the bottom surface of the fuel tank, and a suction port at the front end of a supply pipe for supplying fuel to the engine is disposed inside the reserve tank. A through hole in which a check valve is disposed is provided in a lower portion of the peripheral wall portion. Thus, by ensuring the supply of fuel, the fuel is prevented from being deflected by the lowering of the liquid surface, and the suction port at the front end of the supply pipe is prevented from being separated from the liquid surface of the fuel. As shown in patent document 2, the following structure is known: a part of the bottom surface of the fuel tank is recessed so as to protrude downward, a lid is provided in the fuel tank so as to cover the upper side of the recessed part, a space for accumulating oil is formed, and a feed pipe is inserted into the space.

Prior art literature

Patent literature

Patent document 1: japanese patent publication No. 3828103

Patent document 2: japanese patent laid-open publication No. 10-175452

Disclosure of Invention

Problems to be solved by the invention

However, in the fuel tank, it is desirable to stably supply the fuel to the supply pipe before the remaining amount of the fuel is exhausted.

In addition, in the fuel tank, a phenomenon is known in which fuel is deflected by vibration of a long period from the outside, that is, so-called sloshing (sloshing).

In the fuel tank, it is desirable that the fuel can be reliably supplied to the supply pipe without air intervention even when rattling occurs.

However, in the structure in which the peripheral wall surrounding the front end of the supply pipe is located above the bottom surface of the fuel tank, as shown in patent document 1, when the liquid surface of the fuel is in the vicinity of the bottom surface of the fuel tank, the supply pipe cannot be stably supplied. Further, when sloshing occurs, there is a problem in that fuel cannot be continuously supplied to the supply pipe at the capacity of the reserve tank. Further, as shown in patent document 2, when a portion of the bottom surface of the fuel tank is provided with a recess so as to protrude downward, it is necessary to consider that the protruding portion interferes with an external member such as an obstacle or a road surface, and therefore it is desirable to avoid the shape of the tank bottom from being changed as much as possible.

The purpose of the present disclosure is to provide a tank that can stably supply a stored liquid, not only when the liquid level is lowered but also when sloshing occurs, without interfering with external components such as obstacles and road surfaces.

Solution to the problem

The canister of the present disclosure includes:

a tank body having a tube provided in an inner space capable of containing a liquid, an opening end portion of the tube being disposed in the vicinity of a bottom portion, and an opening portion being formed in the bottom portion so as to correspond to the opening end portion; and

a storage unit which is disposed in the opening and can store the liquid,

the reservoir includes:

a lower half part which is a cylindrical body with a bottom and is detachably mounted on the opening part from below; and

an upper half part which is a cylindrical body penetrating in the vertical direction and is connected with the lower half part from the upper part,

the lower half includes:

a lower half bottom closing the opening; and

a lower half portion having a concave shape opening upward at a bottom portion of the lower half portion, disposed in the vicinity of the bottom portion and above the opening portion,

the upper half portion is connected to a peripheral wall portion of the upper portion of the recessed lower half portion, and has a through hole communicating the inside and the outside of the tubular body of the upper half portion at a position above the upper end of the lower half portion.

Effects of the invention

According to the present disclosure, the stored liquid can be stably supplied not only when the liquid level is lowered but also when the sloshing occurs without interfering with external components such as an obstacle and a road surface.

Drawings

Fig. 1 is a partial cross-sectional view schematically showing an internal structure of a can of an embodiment of the present disclosure.

Fig. 2 is a schematic longitudinal sectional view schematically showing a reservoir of a tank according to an embodiment of the present disclosure.

Fig. 3 is a perspective view of a lower half of the reservoir of the canister of the embodiment of the disclosure, viewed from the upper side.

Fig. 4 is a perspective view of a lower half of the reservoir of the tank according to the embodiment of the present disclosure, as viewed from the bottom surface side.

Fig. 5 is a side view of an upper half of a reservoir of a canister according to an embodiment of the disclosure.

Fig. 6 is a schematic vertical sectional view schematically showing a state in which the reservoir is removed.

Fig. 7 is a diagram for explaining the function of the can of the embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure are described in detail below with reference to the drawings.

< can 1 >)

Fig. 1 is a schematic cross-sectional view showing the internal structure of a can.

As an example, the tank according to the embodiment of the present disclosure has been described as the fuel tank 1 mounted on a vehicle such as a truck, but the present invention is not limited thereto, and any tank may be used as long as the tank is configured to extract and supply the stored liquid to the outside through a supply member such as a supply pipe.

The fuel tank 1 stores fuel as a liquid. The fuel tank 1 is, for example, a rectangular parallelepiped, and is mounted between two frames constituting a body frame of a truck or the like by a mounting member (not shown) via flanges (not shown) provided on side surfaces.

The fuel tank 1 includes a tank body 2 for storing fuel, a supply pipe 3 for supplying fuel to an engine or the like in the embodiment of the present disclosure from the tank body 2 to the outside, and a storage unit 4.

The bottom 22 of the tank body 2 is inclined downward from the periphery toward the center, for example.

An opening 223 (see fig. 2) is provided in the bottom 22, and a reservoir 4 capable of storing fuel is disposed in the opening 223.

In the embodiment of the present disclosure, the opening 223 (see fig. 2) in the center of the bottom 22 is provided in the reservoir mounting surface 221, and the reservoir mounting surface 221 is formed with a height difference in the center of the bottom 22, and is located below the portion of the bottom 22 that is the downward inclined surface.

The reservoir 4 is attached to the opening 223 of the reservoir attachment surface 221 so as to close the opening 223.

The opening 223 is formed in the bottom 22 so as to correspond to the opening end 3a of the distal end of the supply pipe 3 disposed near the bottom 22. The opening 223 may function as a discharge nozzle. The storage portion mounting surface 221 provided with the opening 223 may be provided at the center of the bottom 22 without a height difference. The tank body 2 is made of steel.

The supply pipe 3 is a pipe for supplying the fuel sucked from the tank body 2 to the engine. The supply pipe 3 is disposed in the tank body 2 so as to be positioned with the open end portion 3a disposed in the reservoir portion 4. The supply pipe 3 is inserted into the upper surface 24 of the tank body 2, for example, and is fixed to the upper surface 24 of the tank body 2 via the pipe support 12.

The opening end portion 3a (see fig. 2) of the supply pipe 3 is disposed near the bottom portion 22 and at a position corresponding to the opening portion 223. The opening end portion 3a of the supply pipe 3 is disposed in the reservoir 4, and is disposed in the lower half 6 so as to be surrounded by the lower half 6. The supply pipe 3 sucks in the fuel around the open end 3 a.

The reservoir 4 is attached to the reservoir attaching surface 221 of the tank body 2 using the attaching member 7. The reservoir 4 may be attached to the reservoir attachment surface 221 so as to close the opening 223 and protrude from the reservoir attachment surface 221 into the tank body 2 without using the attachment member 7.

The mounting member 7 is disposed on the storage portion mounting surface 221 of the bottom 22 of the tank body 2 so as to surround the opening 223, and is connected to the lower half 6.

The mounting member 7 includes: a tubular fitted portion (engaged portion) 71 disposed so as to surround the periphery of the opening 223 on the reservoir mounting surface 221; and a bottom surface flange 73 protruding radially from the side outer peripheral surface of the base end portion of the fitted portion 71 on the reservoir mounting surface 221.

The fitted portion 71 engages with (in the embodiment of the present disclosure, is fitted to) the insertion concave portion 61 as the upper portion of the lower half portion 6, whereby the bottom surface flange 73 sandwiches the reservoir mounting surface portion 221 together with the flange portion 63 of the lower half portion 6. Thus, the lower half 6 of the reservoir 4 is firmly attached to the tank body 2 in a state where the opening 223 is closed.

In the embodiment of the present disclosure, the fitted portion 71 is provided with a female screw portion 712 on the inner peripheral surface, and is screwed with a male screw portion 612 formed in the insertion concave portion 61.

The bottom flange 73 forms the bottom surface of the lowermost end on the inner side of the tank body 2.

< reservoir 4 >)

The storage unit 4 will be described.

Fig. 2 is a schematic longitudinal sectional view schematically showing the reservoir 4 of the tank according to the embodiment of the present disclosure.

The reservoir 4 accumulates fuel when the amount of fuel decreases and the liquid surface falls, or when the fuel shakes.

The reservoir 4 is formed in a bottomed tubular shape. The reservoir 4 has, for example, a lower surface at the same height as the lower surface of the bottom 22 of the tank body 2.

The storage unit 4 is detachably provided on the storage unit mounting surface 221 in the central portion of the bottom 22 so as to close the opening 223 and protrude from the storage unit mounting surface 221 into the can body 2.

The reservoir 4 is disposed so as to surround the distal end portion of the supply pipe 3, and has a liquid reservoir wall (a part of the cylindrical body) R for storing liquid therein.

The reservoir 4 has an upper half 8 and a lower half 6.

< lower half 6 >)

Fig. 3 is a perspective view of the lower half 6 of the tank storage 4 according to the embodiment of the present disclosure, as viewed from the upper side, and fig. 4 is a perspective view of the lower half 6 of the tank storage 4 according to the embodiment of the present disclosure, as viewed from the bottom side.

The lower half 6 is detachably attached to the opening 223 from the lower surface side of the tank body 2. As shown in fig. 2 to 4, the lower half 6 has an insertion concave portion (lower half upper portion) 61 having an insertion opening 223, and a lower half bottom 64 having a flange 63 and a jig operating portion 65. The lower half 6 is preferably made of metal constituted by carbon steel or the like.

The lower half 6 is, for example, a pin-shaped member having a concave upper portion, and in the case where the opening 223 is a discharge nozzle, the lower half 6 functions as a discharge plug for closing the discharge nozzle.

The lower half 6 is fitted and fixed to the mounting member 7 disposed inside the tank body 2 via the opening 223 so as to sandwich the reservoir mounting surface 221.

The lower half 6 is formed into a bottomed tubular shape by the insertion concave portion 61 and the lower half bottom 64. Further, a flange portion 63 and a jig operating portion 65 are provided on the lower half bottom portion 64. In addition, a female screw portion (fitted portion) 611 to be fitted with the fitting portion 87 is provided in the lower half 6.

The insertion concave portion (lower half upper portion) 61 is formed in a concave shape, and has a concave portion 610 opening upward. The insertion concave portion 61 is inserted into the can body 2 from the opening 223 of the storage portion mounting surface portion 221 of the bottom portion 22. The insertion concave portion 61 is disposed in the vicinity of the bottom 22 of the tank body 2 and above the opening 223.

The insertion concave portion 61 is fitted into the tubular fitting portion 71 of the mounting member 7 in the tank main body 2. In the embodiment of the present disclosure, the insertion concave portion 61 is disposed inside the fitted portion 71 so as to protrude upward from the bottom surface flange 73 of the mounting member 7 disposed on the reservoir mounting surface portion 221, and the upper end portion is formed at the same height as the upper end portion of the fitted portion 71.

The bottom portion 64 of the lower half has a lower surface 641 which closes the opening 223 and is positioned at substantially the same height as the lower surface of the bottom 22 of the tank body 2. The lower surface 641, which is a position substantially at the same height as the lower surface of the bottom 22 of the tank body 2, is a lower surface 641 having a small height difference from the lower surface of the bottom 22 of the tank body 2 or a positional relationship having little height difference. Further, the distance of the lower surface 641 from the height direction of the lower surface of the bottom 22 of the can body 2 is equal to or shorter than the distance of the bottom surface of the recess 610 from the height direction of the lower surface of the bottom 22 of the can body 2, and the lower surface 641 and the lower surface of the bottom 22 of the can body 2 may be in a position close to or at the same height in the height direction. The lower surface 641, which is located at a height substantially equal to the lower surface of the bottom 22 of the tank body 2, may be located at a height not interfering with other external materials below the tank body 2.

Thus, when the lower half 6 closes the opening 223, the lower half 6 does not protrude extremely downward from the lower surface of the bottom 22 of the tank body 2.

Thus, the tank 1 does not interfere with external components such as a barrier and a road surface below at the installation site.

In the embodiment of the present disclosure, an external screw portion 612 as an engaging portion (more specifically, a fitting portion) is formed on the outer periphery of the insertion concave portion 61, and is screwed with the internal screw portion 712 of the tubular fitted portion 71 of the mounting member 7. Thus, the flange 63 of the lower half 6 is firmly held together with the bottom flange 73 against the reservoir mounting surface 221 of the bottom 22, and the lower half 6 is detachably fixed by closing the opening 223.

The jig operating portion 65 is provided on the lower surface 641 of the bottom portion 64 of the lower half. The clamp operation portion 65 is provided so as to be engageable with a clamp used when screwing the lower half portion 6 to the opening 223.

By operating the engaged jig in the jig operating section 65, the fitting-target section 71 can be easily attached to and detached from the female screw section 712.

In the embodiment of the present disclosure, the jig operating portion 65 is formed as a concave hole having a hexagonal inner peripheral surface, into which one end portion of a hexagonal wrench as a jig can be inserted. By inserting the clip into the clip operation portion 65 and operating it, the reservoir portion 4 is attached to the tank body without protruding downward, and in this configuration, the reservoir portion 4 can be easily fixed. If the jig is a screw driver, the jig operating section 65 may be formed as a hole having a negative sign, a positive sign, or the like corresponding to the tip shape of the screw driver.

The lower half 6 is detachably attached to the opening 223, and functions as a drain cap for the tank body 2.

That is, as shown in fig. 6, the opening 223 of the storage unit mounting surface 221 of the tank body 2 is exposed to the outside by detaching the lower half 6 from the opening 223. At this time, the upper half 8 may be detached together with the lower half 6.

This allows the excess fuel to be purged from the tank body 2, and maintenance of the tank body such as cleaning of the tank body 2 to be performed.

< upper half 8 >)

The upper half 8 is a cylindrical body penetrating in the vertical direction, and is fixed by being connected to the lower half 6 from above. The upper half 8 includes a through hole 85 and a liquid reservoir wall R as a cylindrical body disposed at a position surrounding the front end portion of the supply pipe 3. The upper half 8 is formed of, for example, resin.

The upper half 8 has a fitting portion 87 as a connecting portion on the base end 8a side as the lower half 6 side. The fitting portion 87 is inserted into the lower half 6 at the base end 8a side and engages with the fitted portion (female screw portion 611) of the insertion concave portion 61 of the lower half 6. In the embodiment of the present disclosure, the fitting portion 87 is a male screw portion, and therefore the fitting portion 87 engages with the female screw portion 611 as a fitted portion. Thus, the upper half 8 is fitted in the lower half 6 and fixed in a state of being less likely to fall off. The fitting portion 87 is, for example, a male screw portion provided on the outer periphery of the base end portion 8a, and is configured to be screwed with a female screw portion 611 formed on the inner peripheral surface of the recess 610 surrounding the insertion concave portion 61 of the lower half portion 6 when the base end portion 8a is inserted into the lower half portion 6.

In the present embodiment, the fitting portion 87 is a male screw portion, and the portion to be fitted is a female screw portion 611, but any engagement (fitting) may be employed as long as both are engaged, and the upper half 8 is fixed to the lower half 6 and detachable from the opening 223. For example, the fitting portion 87 of the upper half 8 is a locking portion that engages with a locked portion provided in the lower half 6 instead of the female screw portion 611. The locking portion is, for example, a claw extending from the base end portion 8a side and elastically deformed, and protruding outward at the distal end portion of the extending portion. On the other hand, when the base end 8a side is inserted into the lower half 6 from the upper side, the engaged portion of the lower half 6 becomes an engaged portion such as a notch, a groove, or a recess that can engage with the claw. The engaged portion restricts movement of the engaging portion such as a claw inserted and engaged from above in the up-down direction. Thus, the upper half 8 is fitted in the lower half 6 and fixed in a state of being less likely to fall off. The claw may be a portion to be engaged, and a notch, a groove, a recess, or the like to be engaged with the claw may be a portion to be engaged.

The upper half 8 is provided with a positioning portion 89 on the front end portion 8b side for positioning the supply pipe 3 inserted into the upper half 8 from above.

The through hole 85 is disposed above the opening 223, and communicates the inside of the cylindrical body of the upper half 8 with the outside. The through-hole 85 allows fuel to flow in from the tank main body 2 in the upper half 8. In the lower half 6, the insertion concave portion 61 located near the opening 223 can suck the fuel stored in the concave portion 610 into the supply pipe 3.

In the embodiment of the present disclosure, the through hole 85 is disposed in the storage portion 4 at a position adjacent to the upper end portion of the engaged portion 71 and the engagement portion (the engagement portion of the female screw portion 712 and the male screw portion 612) of the insertion concave portion 61, among positions near the bottom portion 22 of the tank body 2. Thus, even if the liquid level drops to the vicinity of the bottom 22 of the tank main body 2, the fuel flows into the upper half 8.

The liquid reservoir wall R is provided as a part of the cylindrical body at the upper portion of the through hole 85.

The liquid reservoir wall portion R is disposed above the through hole 85 (in the embodiment of the present disclosure, between the position where the opening is formed in the distal end portion 8 b) so as to surround the supply pipe 3. The liquid reservoir wall R is provided to separate the inside of the upper half 8 from the outside, and fuel does not flow out from the reservoir 4 to the tank body 2. In addition, the inner and outer spaces of the upper half 8 of the distal end portion 8b where the positioning portion 89 is disposed communicate.

In the reservoir 4, when sloshing occurs, the liquid reservoir wall R makes it difficult for the fuel (liquid) stored in the reservoir 4 to flow out and accumulate. Any number of through holes may be provided as long as the amount of fuel continuously sucked into the supply pipe 3 can be ensured by the liquid reservoir wall portion R even when sloshing.

< Effect >

The operation of the reservoir in the tank according to the embodiment of the present disclosure will be described with reference to fig. 2 and 7. Fig. 7 is a schematic cross-sectional view schematically showing an example of fuel storage in the case where sloshing occurs in the tank in the embodiment of the present disclosure. In fig. 7, for convenience, the insertion concave portion 61 and the fitting-target portion 71 are indicated by a fitting portion K.

In the embodiment of the present disclosure, the lower half 6 constituting the bottom of the reservoir 4 is disposed in the tank body 2 near the bottom 22 of the tank body 2, that is, above the bottom flange 73 constituting the bottom of the tank body 2, at the fitting portion K (see fig. 7) of the insertion concave portion 61 and the fitted portion 71, and the through hole 85 is provided near or adjacent to the fitting portion.

As shown in fig. 2, even if the fuel in the tank body 2 is reduced, when the liquid level is higher than the through hole 85, the fuel in the tank body 2 flows into the reservoir 4 through the through hole 85, and the supply pipe 3 can be made to suck a sufficient amount of fuel. Further, according to the embodiment of the present disclosure, as shown in fig. 7, even in the case where the liquid surface of the fuel in the tank main body 2 is lower than the through hole 85, the reservoir 4 can store the fuel inside the lower half 6 (the insertion concave portion 61).

Therefore, the fuel can be reliably sucked through the opening end portion 3a of the supply pipe 3 surrounded by the insertion concave portion of the lower half portion 6.

When the tank body 2 storing the liquid stores the fuel and is installed in a vehicle or the like, the fuel in the tank body 2 may be deflected (rattled) by a load from the outside. In this case, since the reservoir 4 has the liquid reservoir wall R in addition to the region from the bottom surface of the recess 610 inserted into the concave portion 61 to the lower end of the through hole 85, the outflow of fuel to the outside of the reservoir 4 can be reliably prevented by the liquid reservoir wall R. Thus, even if sloshing occurs, the supply pipe 3 can reliably suck in liquid, and stable fuel supply can be performed.

Further, according to the embodiment of the present disclosure, the tank and the discharge pipe can be connected, and the reservoir 4 for storing fuel can be provided without protruding downward of the tank.

In the reservoir 4, the opening 223 of the bottom 22 of the tank body 2 is closed by the lower half 6 of the reservoir 4, and fuel is stored. This allows the open end portion 3a of the supply pipe 3 to extend downward to the vicinity of the insertion concave portion 61, and reduces the amount of fuel (also referred to as "ineffective remaining amount") that cannot be sucked into the supply pipe 3.

As described above, according to the embodiments of the present disclosure, the stored liquid can be stably supplied not only when the liquid surface is lowered but also when the sloshing occurs without interfering with external components such as an obstacle and a road surface.

The disclosure of the specification, drawings and abstract contained in the japanese patent application publication No. 2020-057806 of the application No. 27 of 3 months in 2020 is incorporated herein in its entirety by reference.

Industrial applicability

The tank in the present disclosure is useful as a fuel tank for a vehicle.

Description of the reference numerals

1: fuel tank (canister);

2: a tank main body;

3: a supply pipe;

3a: an open end;

4: a storage section;

6: a lower half;

7: a mounting member;

8: an upper half;

8a: a base end portion;

8b: a front end portion;

12: a tube support portion;

22: a bottom;

24: an upper surface portion;

61: inserting a concave portion (lower half upper portion);

611: an internal thread portion;

612: an external thread portion (engagement portion);

63: a flange portion;

64: the bottom of the lower half;

65: a clamp operation part;

71: a portion to be fitted;

712: an internal thread portion (engaged portion);

73: a bottom flange;

85: a through hole;

87: a fitting portion;

89: a positioning part;

221: a storage unit mounting surface portion;

223: an opening portion;

k: a fitting portion;

r: a wall portion.

Claims

1. A canister, comprising:

a tank body having a tube in an inner space capable of containing a liquid, an opening end portion of the tube being disposed near a bottom of the tank body, and an opening portion being formed in the bottom of the tank body so as to correspond to the opening end portion; and

a storage unit which is disposed in the opening and can store the liquid,

the opening is a discharge nozzle,

the reservoir includes:

a lower half part which is a cylindrical body with a bottom and is detachably mounted on the opening part from below, and the lower half part is a discharge pipe plug; and

the lower half includes:

a lower half bottom closing the opening; and

a lower half portion having a concave shape opening upward at a bottom portion of the lower half portion, the lower half portion being disposed in the vicinity of the bottom portion of the tank main body and above the opening portion,

2. The can according to claim 1, wherein an upper portion of said lower half portion is inserted into said opening portion and detachably engaged with an engaged portion disposed on a bottom portion of said can body at a periphery of said opening portion.

3. The can according to claim 2, wherein said engaged portion is an internal screw portion, and an external screw portion screwed with said internal screw portion is provided on an outer periphery of an upper portion of said lower half portion.

4. A tank according to claim 3, wherein a clamp operation portion is provided on a lower surface of the bottom of the lower half portion, the clamp operation portion is engaged with a clamp, and the upper portion of the lower half portion is attachable to and detachable from the engaged portion by operating the engaged clamp.

5. The canister of claim 1, wherein the upper half has a portion of the cylindrical body of the upper half above the through-hole.

6. The can of claim 1, wherein the upper half is fixed to the lower half in such a manner as to be detached from the opening together with the lower half.