JPH11294282A - Fuel tank lid unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regularly hold the space necessary for the bottom of a fuel pump in a prescribed value. SOLUTION: A fuel pump part and a fuel filter part are integrally formed to constitute a pump with filter 3, and the pump with filter 3 is housed and fixed to a turning tank 8 having a flat bottom surface capable of making contact with the bottom surface of the fuel tank and integrated thereto. A fuel tank lid 19 having a fuel discharge passage part 20 arranged through is provided, a turning tank mounting wall 22 capable of fitting to the integrated turning tank 8 and pump with filter 3 is provided on the fuel tank lid 19, and the turning tank 8 is fitted to the rotating tank mounting wall 22 provided on the fuel tank lid 19 through an expansion mechanism in such a manner as to be expansible and contractible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a fuel tank cover provided with a filter for filtering fuel supplied to an engine, which is mainly attached to a fuel tank for storing fuel supplied to an internal combustion engine. It concerns the body unit.

[0002]

2. Description of the Related Art In general, a vehicle such as an automobile is provided with a fuel tank for storing fuel of an internal combustion engine such as an engine. Fuel pump to send to the engine,
For example, as disclosed in Japanese Patent Application Laid-Open No. 54-51564, a thin and short leg is attached at the bottom axis position of the fuel pump, and the fuel pump is mounted so that the leg contacts the bottom of the fuel tank. By arranging the fuel pump, the distance between the suction port of the fuel pump and the bottom of the fuel tank is maintained at a predetermined value.

[0003]

However, a thin and short leg is attached to the bottom axis of the fuel pump, and the distance between the suction port of the fuel pump and the bottom of the fuel tank at the leg with respect to the bottom of the fuel tank. In the spacing means, the tip of the leg does not stably contact the bottom of the fuel tank, such as when the bottom of the fuel tank has irregularities or the bottom of the fuel tank is inclined. The contact condition differs for each fuel tank, and the distance between the suction port of the fuel pump and the bottom of the fuel tank cannot be maintained at a predetermined value, which may cause variation between products.

In particular, when the concave portion formed on the bottom surface of the fuel tank coincides with the position of the tip of the leg, the contact portion cannot be stably contacted, and the suction port of the fuel pump and the bottom of the fuel tank cannot be connected. There is a problem that it becomes difficult to keep the interval of the predetermined value at a predetermined value.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fuel tank cover unit which can solve the above-mentioned problems and can maintain a required space at the bottom of the fuel pump at a predetermined value.

[0006]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a fuel pump unit and a fuel filter unit are integrally formed to constitute a pump with a filter. The pump is housed and fixed in a swirl tank having a flat bottom surface capable of abutting against the bottom surface of the fuel tank, and the fuel tank cover is provided with a fuel discharge passage portion therethrough. The body is provided with a swirl tank mounting wall that can be fitted to the integrated swirl tank and the pump with filter, and the swirl tank and the swirl tank mounting wall provided on the fuel tank lid are connected via a telescopic mechanism. And is fitted so as to be extendable and retractable.

According to the first aspect of the present invention, since the bottom surface of the swirl tank of the fuel tank lid unit is formed flat and its area is large, the fuel tank lid unit stands alone. Can be held at the time of movement,
Handling during assembly is easy.

When the fuel tank lid unit is inserted into the fuel tank, if the flat bottom of the swirl tank abuts against the bottom of the fuel tank, the swirl tank and the fuel tank lid are contracted and moved by the expansion and contraction mechanism, and the fuel tank is moved. The total length will be adjusted to match the depth of the. This makes it possible to cope with various types of fuel tanks even if the positions of the recesses, steps, and the like formed on the bottom surface of the fuel tank are slightly shifted. In addition, since the positional relationship between the swirl tank and the filter-equipped pump is kept constant, it is possible to prevent the fuel from being hindered by the filter-equipped pump.

In addition, since the fuel tank lid is mounted in a state in which the swirl tank and the pump with filter are compactly integrated, assembly becomes easy.

In the invention described in claim 2, a pump structure with a filter is formed by concentrically fitting a cylindrical fuel filter portion around the outer periphery of a cylindrical fuel pump portion. Features.

According to the second aspect of the present invention, by disposing the filter portion on the outer periphery of the fuel pump portion, the filter-equipped pump can be made compact, in other words, a simple columnar shape. Becomes In addition, by disposing the filter unit on the outer periphery of the fuel pump unit, the volume of the filter unit can be increased while keeping the overall height of the filter-equipped pump low, so that high filter efficiency can be ensured.

[0012] In the invention described in claim 3,
A plurality of guide cylinders formed on one of the swivel tank and the swirl tank mounting wall of the fuel tank lid, and a guide body formed on the other side, which can be slidably fitted into the respective guide cylinders. And an elastic body interposed between each guide cylinder and the guide body, and further, a fuel discharge flow passage disposed through the fuel tank lid at the outlet of the fuel filter section of the filter-equipped pump. A flexible tube having a connectable joint is connected to the inner end of the fuel tank of the portion, and the flexible tube is provided at a position between the guide cylinders or guides of the swirling tank mounting wall provided on the fuel tank lid. An opening for facilitating the connection between the joint and the inner end of the fuel tank of the fuel discharge passage is formed.

According to the third aspect of the present invention, a plurality of guide cylinders are formed on one of the swirl tank and the swirl tank mounting wall of the fuel tank lid, and the other slides into the respective guide cylinders. By forming the guide bodies that can be movably fitted to each other, it is possible to easily interpose the elastic body, and it is possible to stably perform the expansion and contraction movement between the swirl tank and the fuel tank lid. become. As a result, it is possible to secure a wide opening at a position between the guide cylinder portion or the guide body of the swirl tank mounting wall, and visually check the opening through the joint of the flexible tube and the fuel tank of the fuel discharge flow path portion. By performing the connection with the inner end portion, it is possible to easily assemble the fuel tank lid unit while maintaining a reliable connection state of the piping system.

According to a fourth aspect of the present invention, the fuel tank lid unit according to any one of the first to third aspects, wherein a liquid meter is attached to one of the fuel tank lid and the swirl tank. It is characterized by.

According to the fourth aspect of the present invention, a liquid meter is attached to one of the fuel tank lid and the swirl tank so that the positional relationship of the liquid meter with respect to the fuel tank bottom surface is constant. Since it is fixed, it is possible to accurately and reliably measure the liquid amount.

[0016]

Embodiment 1 Hereinafter, a specific embodiment 1 of the present invention will be described with reference to the drawings.

FIG. 1 to FIG. 4 show a first embodiment of the present invention.

First, the structure will be described. In the first embodiment, as shown in FIG. 4, a fuel pump section 1 for sucking up fuel and sending it to an internal combustion engine such as an engine is mixed with fuel. A fuel filter unit 2 for removing foreign matter is integrally formed to constitute a pump 3 with a filter having a columnar overall shape.

The columnar pump with filter 3 has a structure in which a cylindrical fuel filter unit 2 is concentrically fitted around the outer periphery of a columnar fuel pump unit 1 and integrated therewith. And are manufactured as one piece. The fuel filter section 2
Is usually provided on the intake side of the engine, but by using this pump with filter 3, it is possible to eliminate the need to separately provide a fuel filter in the engine.

At the bottom of the filter-equipped pump 3, a disk-shaped suction-side filter 4 communicating with the suction port of the fuel pump unit 1 is mounted. Further, the discharge port of the fuel pump unit 1 and the inlet of the fuel filter unit 2 are connected by using a flexible tube 5. Further, another flexible tube 7 having a joint 6 at the tip is connected to the outlet of the fuel filter unit 2.

In addition, there is provided a swirl tank 8 having a flat bottom surface which can be brought into contact with the bottom surface of the fuel tank, has a bottomed cylindrical shape, and is large enough to accommodate the pump 3 with a filter.
The swirl tank 8 always stores a required amount of fuel so that the fuel can be reliably sucked even when the fuel in the fuel tank is offset due to the inclination of the fuel tank. A fuel inlet 9 communicating with the fuel tank. Further, a nozzle 10 is arranged at the fuel inlet 9, and another flexible tube 12 having a joint 11 at the tip is connected to the nozzle 10.

The swirl tank 8 is formed with a recess 14 projecting inward and extending in the axial direction 13, and receiving the upper end of the recess 14 at a position corresponding to the side of the pump 3 with filter. A receiving member 15 is formed so as to form a stopper 16 for restricting a fitting position of the filter-equipped pump 3 to the swirl tank 8. In addition, if necessary, a buffer member made of an elastic material such as rubber may be attached to a contact portion of the upper end of the concave streak 14 with the receiving member 15 of the pump 3 with a filter to prevent the pump 1 from vibrating. . At this time, a predetermined interval is formed between the swirl tank 8 and the bottom of the pump with filter 3.

Further, locking claw portions 17 are formed at a plurality of circumferential positions on the side of the filter-equipped pump 3, and the locking claw portions 17 are locked at corresponding positions of the swirl tank 8. Of the filter-equipped pump 3
The side part and the swirl tank 8 can be integrally fixed with a required space between the bottom parts.

On the other hand, a fuel tank lid 19 is provided on the upper surface of the fuel tank so as to close the fuel tank opening, and the fuel tank lid 19 is provided at the tip of the flexible tube 7 connected to the outlet of the fuel filter 2. Fuel discharge channel 2 having a fuel tank inner end to which joint 6 can be connected
0 and a fuel return flow path 21 having a fuel tank inner end to which a joint 11 at the tip of a flexible tube 12 connected to the nozzle 10 can be connected. Inside part)
The fuel discharge passage 20 and the fuel return passage 21
Is formed so as to protrude toward the axial direction 13 of the swirl tank 8 so as to surround the swirl tank 8. A notch 23 for preventing interference is formed in the swirling tank mounting wall 22 at a position corresponding to the locking claw 17 on the side of the pump with filter 3. In addition, the swirl tank mounting wall 2
2 includes a guide tube portion 24 or a guide body 25 to be described later.
An opening 37 is formed between the joints 6 and 11 to facilitate the connection between the joints 6 and 11 and the inner ends of the fuel discharge passage 20 and the fuel return passage 21 in the fuel tank. Due to the opening 37, the swirl tank mounting wall 22 has a partial cylindrical shape as described above.

The swirling tank mounting wall 22 formed on the back surface of the fuel tank lid 19 has an inner diameter substantially equal to or slightly larger than the outer diameter of the pump 3 with a filter. So that it can be inserted between the pump with filter 3 and the swirl tank 8.

A guide tube portion 24 extending in the axial direction 13 is formed at a plurality of circumferential positions inside the swirl tank 8, and the guide tube portion is formed at a corresponding position on the side of the swirl tank mounting wall 22. A rod-shaped or tubular guide body 25 which can be slidably fitted in the portion 24 is formed, and an elastic body 26 such as a coil spring is interposed between the guide tubular portion 24 and the guide body 25 to extend and contract. 38, the swirl tank 8 and the fuel tank lid 19 can be extended and contracted by the elastic force of an elastic body 26 such as a coil spring. The guide tube portion 24 may be formed on the side of the swirl tank mounting wall 22, and the guide body 25 may be formed inside the swirl tank 8.

Further, locking claw portions 27 are formed at a plurality of circumferential positions on the side of the turning tank mounting wall 22, and extend in the axial direction 13 at corresponding positions of the turning tank 8 so as to extend into the axial direction 13. A plurality of locking long holes 28 are formed to movably receive or hold or hold the claws 27.

Further, a liquid meter 29 is attached to the swirl tank 8 as required. The liquid meter 29 includes a mounting part 30 for the swirl tank 8, a detecting part 31 including a variable resistor, a float part 32, and a float part 32 extending from the detecting part 31.
The pump with filter 3 and the fuel tank lid are mainly constructed by inserting and fixing the mounting portion 30 to a mounting seat formed at the base of the swirl tank mounting wall surface 22. It should be attached in advance before assembling with the body 19. Further, a temperature sensor 34 such as a thermistor may be attached to the liquid meter 29 if necessary.
In the figure, the frontage 37 of the swirl tank mounting wall 22 is provided at the same position as the liquid meter 29.

In the drawing, reference numeral 35 denotes a lid power supply connector provided on the fuel tank lid 19, and reference numeral 36 denotes a pump power supply connector provided on the pump 3 with a filter.

Next, the operation of the first embodiment will be described.
This will be described with reference to FIG.

First, the procedure for assembling the fuel tank lid unit will be described.

The pump 3 with the filter is accommodated in the inside of a swirling tank 8 having a bottomed cylindrical shape whose entire bottom surface is flat. At this time, it protrudes inwardly formed in the swirl tank 8 and moves in the axial direction 13.
At the upper end of the concave strip 14 extending to the side, a receiving member 15 formed at a corresponding position on the side of the pump with filter 3 is supported, and a locking member formed at a plurality of circumferential positions on the side of the pump with filter 3 is provided. The claw portion 17 is locked in each of a plurality of locking holes 18 formed at corresponding positions of the swirl tank 8, so that the suction port of the fuel pump unit 1 at the bottom of the pump with filter 3 and the swirl tank 8. The distance from the bottom is maintained at a predetermined value to be integrated.

In addition, if necessary, a buffer member made of an elastic body 26 such as rubber is attached to a portion of the groove 14 of the swirl tank 8 in contact with the receiving member 15 of the pump with filter 3 so as to be elastically supported. May be.

The fuel discharge passage portion 20 penetrating through the fuel tank lid 19 is visually observed from the opening 37 formed in the swirl tank mounting wall 22, or while putting a hand through the opening 37. The joint 6 at the tip of the flexible tube 7 connected to the outlet of the fuel filter unit 2 is connected to the inner end of the fuel tank.
A joint 11 at the tip of a flexible tube 12 connected to a nozzle 10 arranged at a fuel inlet 9 of the swirl tank 8 is connected to an inner end of the fuel tank of a fuel return flow path 21 penetrated through 9.

In this state, the swirl tank mounting wall 22 on the back surface of the fuel tank lid 19 is inserted between the filter-equipped pump 3 and the swirl tank 8.

At this time, a guide tube portion 24 extending in the axial direction 13 and formed at a plurality of positions in the circumferential direction inside the swirl tank 8.
An elastic body 26 such as a coil spring is interposed therebetween, and a rod-shaped or cylindrical guide body 25 formed at a corresponding position on the side of the swirl tank mounting wall 22 is slidably fitted to the expansion / contraction mechanism 38.
, The swirl tank 8 and the fuel tank lid 19
Can be expanded and contracted by the urging force of the elastic body 26 such as a coil spring.

Further, a plurality of locking claws 27 formed at a plurality of circumferential positions on the side of the swirling tank mounting wall 22 are provided at a plurality of positions extending in the axial direction 13 at corresponding positions of the swirling tank 8. Each of the long slots 28 is movably accommodated and held or locked and held.

The swirl tank 8 of the fuel tank lid unit thus assembled is inserted into the fuel tank opening, and the fuel tank lid 19 of the fuel tank lid unit closes the fuel tank opening.

At this time, the swirl tank 8 and the fuel tank lid 19
Are fitted so as to be able to expand and contract by the urging force of an elastic body 26 such as a coil spring, so that when the fuel tank lid unit is inserted into the fuel tank, the flat bottom of the swirl tank 8 is entirely By hitting the bottom, the swirl tank 8 and the fuel tank lid 19 contract and move, and the total length of the fuel tank lid unit is adjusted to match the depth of the fuel tank. That is, even if a recess smaller than the contact area is arranged on the contact surface, the bottom surface of the swirl tank 8 contacts the plane formed around the recess, and is not affected by the recess.
Can be attached.

Next, the flow of fuel in the assembled fuel tank lid unit will be described.

As shown in FIG. 3, when the fuel pump unit 1 of the pump with filter 3 is driven, the fuel in the swirl tank 8 is supplied to the disk-shaped suction filter 4 attached to the suction side of the fuel pump unit 1. The suction side filter 4 removes relatively large foreign matter mixed in the fuel. The fuel discharged from the discharge port of the fuel pump unit 1 is
The fuel is sent to the inlet of the fuel filter unit 2 provided on the outer periphery of the fuel pump unit 1 through the flexible tube 5, enters the fuel filter unit 2 from the inlet, and circulates around the outer periphery of the fuel pump unit 1. And the foreign substances contained in the fuel are removed by filtration. The fuel that has exited the outlet of the fuel filter section 2 enters the fuel discharge flow path section 20 disposed through the fuel tank lid 19 through the flexible tube 7. Thereafter, the fuel is sent from the fuel discharge flow path section 20 to an internal combustion engine such as an engine via a fuel hose (not shown).

On the other hand, surplus fuel from the engine is returned to the fuel return flow path 21 penetrating through the fuel tank lid 19 through a fuel return hose (not shown), and is turned through the flexible tube 12 to the swirl tank 8. Bottom fuel inlet 9
Is sent to the inside of the swirl tank 8 from the nozzle 10. At this time, the fuel injected from the nozzle 10 generates a negative pressure around the fuel inlet 9 at the bottom of the swirl tank 8, and the fuel in the fuel tank is sucked into the swirl tank 8 by the negative pressure.

Then, the liquid level of the fuel in the fuel tank is measured by a liquid meter 29 attached to the swirl tank mounting wall 22. At this time, since the liquid meter 29 is mounted on the swirl tank mounting wall 22, the bottom of the swirl tank 8 is positioned by abutting on the bottom surface of the fuel tank, so that the fuel level can be accurately measured. Measurement can be performed.

As described above, according to the present invention, since the bottom surface of the swirl tank 8 forming the bottom surface of the fuel tank lid unit is formed entirely flat, it is possible to stand the unit alone. It is easy to assemble and handle in production. Further, effects such as easy storage in a box or the like are exhibited. Further, a swirl tank 8 having a flat bottom surface capable of abutting against the bottom surface of the fuel tank and capable of housing and fixing the pump 3 with filter.
And the swivel tank mounting wall 22 of the fuel tank lid 19 is fitted so as to be able to expand and contract via an expansion mechanism 38 having an elastic body 26 such as a coil spring. When the flat bottom of the swirl tank 8 comes into contact with the bottom of the fuel tank when inserted into the tank, the swirl tank 8 and the fuel tank lid 19 contract and move, and the total length is adjusted to match the depth of the fuel tank. It will be.

Thus, even if a recess smaller than the contact area is arranged on the contact surface with the fuel tank, the bottom surface of the swirl tank 8 contacts the plane formed around the recess, and is affected by the recess. Because it can be attached without
Since the positional relationship between the swirling tank 8 and the pump 3 with the filter is maintained constant, it is possible to prevent the suction of the fuel by the pump 3 with the filter from being hindered, and it is possible to more accurately measure the fuel level of the fuel. It is possible to do.

Further, since the fuel tank lid 12 is attached in a state where the swirl tank 8 and the pump 3 with the filter are integrated, the assembling becomes easy.

In addition, the liquid meter 29 is attached to the swirl tank mounting wall 22.
If the bottom of the swirl tank 8 is abutted against the bottom of the fuel tank, the liquid meter 29 is positioned, so that it is possible to accurately measure the fuel level. Become.

At this time, the pump 3 with a filter has a structure in which a cylindrical fuel filter section 2 is concentrically externally fitted on the outer periphery of a fuel pump section 1 having a cylindrical shape and integrated therewith. Into a simple columnar shape. In addition, by disposing the filter unit 2 on the outer periphery of the fuel pump unit 1, it is possible to increase the volume of the filter unit 2 while keeping the overall height of the pump with filter 3 low, thereby ensuring high filter efficiency. Becomes

Further, a plurality of guide cylinders 24 are formed on one of the swirl tank 8 and the swirl tank mounting wall 22 of the fuel tank lid 19, and the other can be slidably fitted into each guide cylinder 24. The elastic body 2 is formed by forming
6 can be facilitated, and the swivel tank 8 and the fuel tank lid 19 can be stably expanded and contracted. Thereby, a wide frontage portion 37 is provided at a position between the guide cylinder portion 24 or the guide body 25 of the swirl tank mounting wall 22.
It is possible to connect to the fuel tank inner end of the fuel discharge flow path section 20 penetrating through the fuel tank lid 19 and to the outlet of the fuel filter section 2 while visually observing from the frontage section 37. The joint 6 at the distal end of the flexible tube 7 is connected, and the fuel inlet 9 of the swirl tank 8 is disposed at the inner end of the fuel tank of the fuel return flow path 21 penetrating the fuel tank lid 19. The joint 11 at the distal end of the flexible tube 12 connected to the nozzle 10 can be connected, and the fuel tank lid unit can be easily assembled while maintaining the reliable connection of these piping systems.

In the first embodiment, the liquid meter 2
9 was attached to the base of the turning tank mounting wall 22,
Alternatively, a mounting seat may be provided, and mounted on the mounting seat.

Although the first embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the first embodiment, and there are design changes and the like within the scope of the present invention. Even this is included in the present invention.

[0052]

As described above, according to the first aspect of the present invention, there is provided a swirl tank having a flat bottom surface capable of abutting against a bottom surface of a fuel tank and capable of accommodating and fixing a pump with a filter.
Since the swivel tank mounting wall of the fuel tank lid is fitted so as to be able to expand and contract via an expansion mechanism, when the fuel tank lid unit is inserted into the fuel tank, the flat bottom of the swirl tank is in the fuel tank. When the bottom of the fuel tank abuts, the swirl tank and the fuel tank lid are contracted and moved by the expansion and contraction mechanism, and the total length is adjusted to match the depth of the fuel tank. This makes it possible to correspond to various types of fuel tanks having different shapes and sizes.

Also, there is a step at the bottom of the fuel tank,
Even when the bottom of the fuel tank is inclined, the positional relationship between the swirl tank and the filter-equipped pump is maintained constant, so that it is possible to prevent the fuel from being disturbed by the filter-equipped pump. .

Further, since the fuel tank lid is attached in a state where the swirl tank and the pump with filter are integrated, the assembly becomes easy.

According to the second aspect of the present invention, by disposing the filter portion on the outer periphery of the fuel pump portion, the filter-equipped pump can be arranged in a simple columnar shape. In addition, by disposing the filter unit on the outer periphery of the fuel pump unit, the volume of the filter unit can be increased while keeping the overall height of the filter-equipped pump low, so that high filter efficiency can be ensured.

According to the third aspect of the present invention, a plurality of guide cylinders are formed on one of the swirl tank and the swirl tank mounting wall of the fuel tank lid, and the other is slidably inserted into each guide cylinder. By forming the guide bodies that can be fitted respectively, it is possible to facilitate the interposition of the elastic body, and it is possible to stably expand and contract the swirl tank and the fuel tank lid. As a result, it is possible to secure a wide opening at a position between the guide cylinder portion or the guide body of the swirl tank mounting wall, and visually check the opening through the joint of the flexible tube and the fuel tank of the fuel discharge flow path portion. By performing the connection with the inner end portion, it is possible to easily assemble the fuel tank lid unit while maintaining a reliable connection state of the piping system.

According to the fourth aspect of the present invention, if the liquid meter is mounted on the swirl tank or the swirl tank mounting wall, the bottom of the swirl tank comes into contact with the bottom surface of the fuel tank. Since the positioning of the meter is performed, it is possible to exert a practically useful effect that it is possible to accurately measure the fuel level.

[Brief description of the drawings]

FIG. 1 is an exploded side view of Embodiment 1 of the present invention.

FIG. 2 is an assembly view of FIG.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 2;

FIG. 4 is a view taken in the direction of arrows BB in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel pump part 2 Fuel filter part 3 Pump with filter 6 Joint 7 Flexible tube 8 Swirling tank 20 Fuel discharge flow path part 19 Fuel tank lid 22 Swirling tank mounting wall 24 Guide cylinder part 25 Guide body 26 Elastic body 37 Frontage part 38 Telescopic mechanism

Claims (4)

[Claims] 1. A fuel pump unit and a fuel filter unit are integrally formed to constitute a pump with a filter, and the pump with a filter is housed and fixed in a swirl tank having a flat bottom surface capable of contacting the bottom surface of the fuel tank. And a fuel tank lid through which the fuel discharge flow path portion is disposed, and a swivel that can be fitted to the integrated swirl tank and the pump with filter on the fuel tank lid. A fuel tank lid unit, wherein a tank mounting wall is provided, and the swirl tank and a swirl tank mounting wall provided on the fuel tank lid are fitted so as to be able to expand and contract via an expansion mechanism. 2. The pump with filter according to claim 1, wherein a cylindrical fuel filter is concentrically fitted around the outer periphery of the cylindrical fuel pump. Fuel tank lid unit. 3. A plurality of guide cylinders formed on one of a revolving tank and a revolving tank mounting wall of a fuel tank lid, and
A pump body with a filter formed on the other side, the guide body being slidably fitted in each guide cylinder, and an elastic body interposed between each guide cylinder and the guide; A flexible tube having a joint connectable to the inner end of the fuel tank of the fuel discharge passage portion penetrating through the fuel tank lid is connected to the outlet of the fuel filter section, and provided on the fuel tank lid. An opening for facilitating the connection between the joint of the flexible tube and the inner end of the fuel tank of the fuel discharge passage at a position between the guide cylinders or the guides of the swirling tank mounting wall. The fuel tank lid unit according to claim 1, wherein the fuel tank lid unit is formed. 4. The fuel tank lid unit according to claim 1, wherein a liquid meter is attached to one of the fuel tank lid and the swirl tank.