JPH08189433A - Fuel supply unit - Google Patents

Abstract

(57) [Summary] [Purpose] The fixed position of the fuel pump can be adjusted to accommodate multiple types of fuel tanks. [Structure] The mounting bracket 22 includes an upper plate 23 fixed to the fuel tank 2 and an upper plate 23.
The fixed bracket portion 24 extending downward from the fixed bracket portion 24, the movable bracket portion 25 surrounding the fuel pump 6 between the fixed bracket portion 24 and the support portion 25C to position the fuel pump 6 in the vertical direction, and the fixed bracket portion 24. Four engaging protrusions 28, 28, ... Provided on the movable bracket portion 25 in the engaged holes 27, 27, ...
The engaging mechanism 26 fixes the movable bracket portion 25 to the fixed bracket portion 24 by engaging with. Therefore, the movable bracket portion 2 is moved by vertically moving the connecting position of each engaging projection 28 to each engaged hole 27.
5, the fixed position of the fuel pump 6 changes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply unit suitable for supplying fuel to an injection valve mounted on, for example, an automobile engine.

[0002]

2. Description of the Related Art Generally, a fuel supply unit is used to supply fuel to a fuel injection valve mounted on an automobile engine. The fuel supply unit includes a fuel tank containing fuel and the fuel tank. It is known that there is a mounting bracket provided on the upper side of the fuel tank and a fuel pump that hangs through the mounting bracket into the fuel tank and discharges the fuel in the fuel tank to the outside.

Therefore, a fuel injection device using a fuel supply unit according to the prior art will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a fuel supply unit, which is generally composed of a fuel tank 2, a mounting bracket 3, a fuel pump 6 and the like which will be described later.

Reference numeral 2 denotes a fuel tank containing the fuel F,
The fuel tank 2 is formed as a closed container from a bottom surface portion 2A, a side surface portion 2B and an upper surface portion 2C.
The fuel tank 2 is provided with an oil supply port 2D for supplying the fuel F and an opening 2E for inserting a fuel pump 6 and the like described later.

Reference numeral 3 denotes a mounting bracket for suspending the fuel pump 6 in the fuel tank 2, and the mounting bracket 3
Is an upper plate 4 fixed to the upper surface 2C of the fuel tank 2 so as to close the opening 2E, the base end side is integrally fixed to the lower surface of the upper plate 4, and the front end side extends downward toward the bottom surface 2A. And a bracket body 5 which is a free end. Further, a support portion 5A for supporting the bottom side peripheral edge 6C of the fuel pump 6 from below is bent and formed at the tip end side of the bracket main body 5, and the support portion 5A forms a filter 7 described later on the bottom surface portion 2A. The fuel pump 6 is positioned in the vertical direction so as to be close to each other.

Reference numeral 6 denotes a fuel pump which is provided in the fuel tank 2 and discharges the fuel F in the fuel tank 2 toward a fuel injection valve 11 which will be described later. The fuel pump 6 is an electric motor and a pump portion ( (Both not shown) etc. are built in, a suction port 6A is provided on the bottom side, and a discharge pipe 6B is provided on the top side.
Is provided. A filter 7 for preventing foreign matters from being sucked into the fuel pump 6 together with the fuel F is attached to the suction port 6A, and one end side of a fuel supply pipe 8 described later is connected to the discharge pipe 6B. . And
The fuel pump 6 has a bottom side peripheral edge 6C by a supporting portion 5A.
Is attached to the bracket body 5 in a supported state.

On the other hand, 8 is a fuel supply pipe having one end connected to the discharge pipe 6B of the fuel pump 6 and the other end extending to the engine E, and 9 is connected to the other end of the fuel supply pipe 8. Each fuel injection mechanism forming a part of the fuel supply pipe 8 is shown, and the fuel injection mechanism 9 includes a fuel pipe 10 formed by a cylindrical metal pipe, and a plurality of fuel pipes provided in the middle of the fuel pipe 10. Fuel injection valve 1
1 and 11 (only two are shown).
Each fuel injection valve 11 has an electromagnetic actuator (not shown) built therein, and when the injection signal is supplied from the outside, the fuel F flowing in the fuel pipe 10 is supplied to each cylinder (not shown) of the engine E. It is to be jetted toward.

Reference numeral 12 denotes a fuel filter located upstream of each fuel injection valve 11 and provided in the middle of the fuel supply pipe 8. The fuel filter 12 is a foreign substance in the fuel F discharged from the fuel pump 6. A filter element (not shown)
The fuel F that has been removed and purified in step 1 is circulated to the downstream side.

A pressure regulator 13 is connected to the downstream side of the fuel pipe 10. The pressure regulator 13 is supplied in accordance with the pressure in an intake manifold (not shown) introduced through a control pressure conduit 13A. A portion of the fuel F is used as surplus oil and is returned to the fuel tank 2 via the return pipe 14.
By returning to the inside, the fuel pressure (fuel pressure) in the fuel supply pipe 8 or the like is adjusted to about 2.55 kg / cm ^{2 with} respect to the pressure in the intake manifold.

The fuel injection device according to the prior art has the above-mentioned structure, and when the fuel pump 6 of the fuel supply unit 1 is operated, the fuel F in the fuel tank 2 is discharged from the suction port 6A via the filter 7. While being sucked into the fuel pump 6, the fuel is discharged from the discharge pipe 6B into the fuel supply pipe 8. Then, the fuel F discharged into the fuel supply pipe 8
Is a state in which foreign matter is removed by filtering by a fuel filter 12 provided in the middle of the fuel supply pipe 8, and a part of the foreign matter is injected and supplied from each fuel injection valve 11 into each cylinder of the engine E. It Further, most of the fuel F becomes surplus oil, and from the pressure regulator 13 to the return pipe 14
The fuel pressure in the fuel supply pipe 8 is adjusted to a predetermined pressure by the pressure regulator 13 at this time.

[0012]

By the way, according to the above-mentioned conventional technique, the support portion 5A is formed on the tip side of the bracket main body 5 of the mounting bracket 3, and the support portion 5A forms the bottom side peripheral edge 6C of the fuel pump 6. By supporting the fuel pump 6 from below, the fuel pump 6 is positioned in the vertical direction so that the filter 7 approaches the bottom surface 2A of the fuel tank 2.

However, since many types of fuel tanks 2 are prepared according to the vehicle type, there are many fuel tanks 2 having different height dimensions H from the bottom surface 2A to the top surface 2C of the fuel tank 2.

As a result, in the prior art, it is necessary to prepare the mounting brackets 3 having different extension dimensions of the bracket main body 5 for each fuel tank 2 having different height dimension H, which greatly increases the manufacturing cost. There is a problem that it will end up. In addition, there is a risk that erroneous assembly may occur due to an increase in the number of types of the mounting brackets 3, which not only lowers the assembly workability but also significantly lowers the yield and reliability.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a fuel supply unit capable of adjusting a fixed position of a fuel pump and corresponding to a plurality of types of fuel tanks. I am trying.

[0016]

In order to solve the above-mentioned problems, a fuel supply unit according to the invention of claim 1 comprises a fuel tank containing fuel, and a mounting bracket provided on the upper side of the fuel tank. In a fuel supply unit including a fuel pump suspended in the fuel tank via the mounting bracket, the mounting bracket includes an upper plate fixed to an upper surface of the fuel tank, and the lower plate from the lower surface side of the upper plate. A fixed bracket portion that extends toward the bottom surface of the fuel tank; and a movable bracket portion that surrounds the fuel pump between the fixed bracket portion and a support portion that supports the fuel pump from below on the lower end side. , One of the fixed bracket portion and the movable bracket portion is provided with a plurality of vertically engaged portions on the other bracket portion of the other bracket portion. By the engaging portion provided in Tsu isolation portion selectively engaged, characterized in that consisted with engagement means for fixing the movable bracket portion relative to said stationary bracket unit.

Further, as in the invention of claim 2, the fixed bracket portion and the movable bracket portion are formed in an arc shape surrounding the fuel pump, and the engaged portion is provided on the opening end side of one bracket portion. The engaged hole may be provided, and the engaging portion may be an engaging protrusion provided on the opening end side of the other bracket portion.

Further, as in the invention of claim 3, a fuel filter-pressure regulator assembly having a fuel filter and a pressure regulator is provided on the upper plate of the mounting bracket, and the flow of the fuel filter-pressure regulator assembly is provided. The inlet may be connected to the outlet of the fuel pump, and the outlet may be connected to the fuel supply pipe outside the fuel tank.

[0019]

According to the invention of claim 1, the fuel pump is arranged between the fixed bracket portion and the movable bracket portion, and in this state, the engaging portion is engaged with any of the engaged portions. The movable bracket portion is fixed to the fixed bracket portion, the fuel pump is fixed in the circumferential direction, and the fuel pump is fixed in the vertical direction by the support portion of the movable bracket portion. And
When the mounting height position of the fuel pump is changed, the movable bracket portion is moved in the vertical direction by shifting the engaging position of each engaged portion and the engaging portion in the vertical direction, thereby moving the movable bracket portion. At the same time, the mounting position of the fuel pump is changed.

Further, according to the invention of claim 2, since the fuel pump is surrounded by the fixed bracket portion and the movable bracket portion, the fuel pump is securely fixed and the engaged hole is formed in the engaged hole. The movable bracket can be fixed to the fixed bracket simply by inserting the engaging protrusion.

Further, according to the third aspect of the invention, the fuel discharged from the fuel pump flows into the fuel filter-pressure regulator assembly through the discharge port and the inflow port and is filtered by the fuel filter while being filtered by the pressure regulator. The excess oil is discharged from the outlet to the fuel supply pipe while being adjusted to a predetermined fuel pressure, and the surplus oil is directly discharged into the fuel tank.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fuel supply unit according to an embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, the same components as those of the conventional technique shown in FIG. 5 described above are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, 21 is a fuel supply unit according to this embodiment, and 22 is a mounting bracket according to this embodiment which is used in place of the mounting bracket 3 of the prior art. The mounting bracket 22 is an upper plate 23, which will be described later. Fixed bracket portion 24, movable bracket portion 25, engagement mechanism 2
It is composed of 6 and 6.

Reference numeral 23 denotes an upper plate fixed to the upper surface 2C of the fuel tank 2, and the upper plate 23
As shown in FIG. 2, a disc-shaped plate portion 23A fixed to the upper surface portion 2C so as to close the opening 2E of the fuel tank 2, and a downward direction from the lower surface of the plate portion 23A through the opening 2E. It is generally constituted by a large-diameter and short-length cylindrical portion 23B extended.

Reference numeral 24 denotes a fixed bracket portion whose base end side is integrally fixed to the lower surface of the plate portion 23A of the upper plate 23 and whose front end side extends downward. The fixed bracket portion 24 has a semi-cylindrical shape with its axis extending vertically. The inner surface is a holding surface 24A formed in an arc shape along the outer peripheral shape of the fuel pump 6. Further, the fixed bracket portion 24 is adapted to come into contact with the movable bracket portion 25 via the opening side end faces 24B, 24B.

Reference numeral 25 denotes a movable bracket portion which is arranged so as to face the fixed bracket portion 24. The movable bracket portion 25, like the fixed bracket portion 24, is formed in a semi-cylindrical shape with its axis extending vertically. The inner surface of the holding surface 25 is formed in an arc shape along the outer peripheral shape of the fuel pump 6.
A. Then, the movable bracket portion 25 is
The opening-side end surfaces 25B, 25B are brought into contact with the respective opening-side end surfaces 24B of the fixed bracket portion 24, so that the fuel pump 6 is surrounded in cooperation with the fixed bracket portion 24. Further, the movable bracket portion 25 is integrally provided with a support portion 25C located at the lower end portion and protruding inward in the radial direction, and the support portion 25C holds the fuel tank 5 with the holding surface 25A. Then, the fuel pump 6 is supported by contacting the bottom side peripheral edge 6C of the fuel pump 6 from below.

Reference numeral 26 denotes an engaging mechanism as an engaging means provided on the fixed bracket portion 24 and the movable bracket portion 25. The engaging mechanism 26 includes an engaged hole 27 and an engaging protrusion 28 which will be described later. It is configured.

Numerals 27, 27, ... Depict a plurality of engaged holes which are provided on both end faces 24B, 24B of the fixed bracket portion 24 on the opening side and which are arranged at equal intervals in the vertical direction. The dowel hole 27 is formed as a rectangular through hole that extends in parallel from each opening side end surface 24B and opens to the outer peripheral surface of the fixed bracket portion 24.

Further, reference numerals 28, 28, ... Denote four engaging projections provided on the movable bracket portion 25, and the base end side of each of the engaging projections 28 is on the opening side end surface 25B of the movable bracket portion 25. It is fixed integrally, and the tip side is the end surface 25 of each opening side.
It extends in parallel from B toward each opening side end surface 24B of the fixed bracket portion 24. Further, a substantially triangular engaging claw 28A that projects outward is provided on the tip end side of each engaging protrusion 28.

The engaging mechanism 2 having the above-mentioned structure
Reference numeral 6 denotes the engaging projections 2 which are inserted into the engaged holes 27 while elastically deforming the engaging projections 28 inward and reach the most insertion position where the movable bracket section 25 is brought into contact with the fixed bracket section 24.
By inserting 8, the engaging claws 28A are projected from the engaged holes 27, and the elastic force of the engaging protrusions 28 engages with the peripheral surface side openings of the engaged holes 27 to fix the fixed bracket. Part 24
The movable bracket portion 25 is fixed to the.

On the other hand, reference numeral 29 indicates a fuel filter-pressure regulator assembly provided on the mounting bracket 22, and the fuel filter-pressure regulator assembly 29 is integrated with the plate portion 23A of the upper plate 23 as shown in FIG. It is composed of a formed cylindrical upper case 30A with a lid and a cylindrical lower case 30B with a bottom provided so as to close the lower opening of the upper case 30A.
1, the casing 30, the inflow pipe 32 fixed to the outer peripheral side of the upper case 30A of the casing 30 and formed in a substantially V shape bent downward, and the upper case 3
Outflow pipe 3 protruding from the upper side of 0A to the outside of the fuel tank 2
3 and the control pressure introduction pipe 34, and is provided on the lower case 30B located on the axis OO, the upper end side is connected to the surplus oil outlet 40 of the pressure regulator 37 described later, and the lower end side is the lower case. 30B, a return flow passage 35 opened at the lower end, and a tubular fuel filter which is disposed in the casing 30 so as to surround the outer periphery of the return flow passage 35 and filters the fuel F flowing from the inflow pipe 32. 36, and is provided in the upper case 30A above the fuel filter 36, and controls the pressure of the fuel F flowing in through the fuel filter 36 by the control pressure introducing pipe 34.
The outflow pipe 33 is pressure-controlled by the control pressure from
And a pressure regulator 37 that causes excess oil to flow out from the return flow path 35.

The pressure regulator 37 includes a regulator casing 38 provided in the upper case 30A, and a fuel pressure chamber A for receiving the pressure of the fuel F flowing in the regulator casing 38 via the fuel filter 36. A diaphragm 39 defining a control pressure chamber B for receiving the pressure or atmospheric pressure in the intake manifold introduced from the control pressure introduction pipe 34 as a control pressure,
The surplus oil outlet 40, which is located on the lower end side of the regulator casing 38 and opens in the return flow passage 35, is displaced together with the diaphragm 39 and the surplus oil outlet 40.
And a ball valve body 42 which is seated on and off the valve seat 41 formed on the.

The fuel supply unit 21 according to this embodiment has the above-mentioned structure, and when the engine is started,
The fuel F in the fuel tank 2 is sucked from the filter 7 into the fuel pump 6 through the suction port 6A, is discharged from the discharge pipe 6B of the fuel pump 6, and is discharged through the inflow pipe 32 into the fuel filter-pressure regulator assembly. It flows into 29. Then, the fuel filter-pressure regulator assembly 2
The fuel F that has flowed into the inside 9 is discharged from the outflow pipe 33 while being filtered through the fuel filter 36, and is directed from each fuel injection valve to each cylinder of the engine through the fuel supply pipe, the fuel injection mechanism, and the like. It is supplied by injection.

When the fuel F is supplied, the pressure of the fuel F discharged from the fuel pump 6 acts in the fuel pressure chamber A of the pressure regulator 37. When the pressure (fuel pressure) of the fuel F becomes higher than the pressure set by the control pressure or the like in the control pressure chamber B, the diaphragm 39 is displaced upward by the fuel pressure in the fuel pressure chamber A and the ball valve The body 42 separates from the valve seat 41. As a result, a part of the fuel F flowing into the fuel filter-pressure regulator assembly 29 is directly returned to the fuel tank 2 through the surplus oil outlet 40 and the return passage 35, so that the fuel pressure in the fuel supply pipe is reduced. Can be constantly adjusted to a predetermined pressure.

Next, the work procedure until the fuel pump 6 is installed in the fuel tank 2 having the height H1 will be described.

First, the fuel pump 6 is fixed to the fixed bracket portion 2
4 is inserted from the lower side along the holding surface 24A, and the discharge pipe 6B is inserted into the inflow pipe 32. Next, the movable bracket portion 25 is arranged so as to face the fixed bracket portion 24, and the upper engaging protrusions 28, 28 are placed in the uppermost engaged holes 27, 27 and the lower engaging protrusions 28, 28. From the bottom 3
Inserted into the second engaged hole 27, 27, the respective opening side end faces 24B, 25B are brought into contact with each other. As a result, the engaging claws 28A of the engaging protrusions 28 are connected to the engaged holes 27, and the fuel pump 6 is held in a state of being surrounded by the fixed bracket portion 24 and the movable bracket portion 25. At this time, the bottom edge 6C of the fuel pump 6 is supported by the support portion 25C of the movable bracket portion 25 and positioned vertically.

After the fuel pump 6 is fixed to the mounting bracket 22 as described above, the pressure regulator 37, the fuel filter 36, and the lower case 30B are sequentially assembled to the upper case 30A of the casing 30, and the fuel filter is attached.
The pressure regulator assembly 29 is assembled, and the filter 7 is attached to the suction port 6A of the fuel pump 6 to form a pump unit.

Next, after forming the pump unit, the pump unit is inserted into the fuel tank 2 through the opening 2E of the fuel tank 2 and the upper plate 23 is fixed to the upper surface portion 2C. As a result, as shown in FIG.
The fuel pump 6 can be arranged at an appropriate position close to the bottom surface portion 2A.

On the other hand, a case where a pump unit having the same specifications as the above-mentioned pump unit is attached to another fuel tank, for example, a fuel tank 2'having a large height dimension H2 as shown in FIG. 4, will be described.

First, the fuel pump 6 is fixed to the fixed bracket portion 2
4 is inserted from below along the holding surface 24A, and the discharge pipe 6B is connected to the inflow pipe 32 through the relay pipe 43. Next, the movable bracket portion 25 is arranged so as to face the fixed bracket portion 24, and the upper engagement protrusion 28,
Movable with respect to the fixed bracket portion 24 by inserting 28 into the third engaged holes 27, 27 from the top and inserting the lower engagement protrusions 28, 28 into the lowest engaged holes 27, 27. The bracket portion 25 is arranged so as to be shifted downward.

As a result, the fuel pump 6 has the engaged holes 27.
Since it is moved downward by 2 pieces, the large height dimension H
Even if it becomes the fuel tank 2'of 2
The fuel pump 6 can be arranged at an appropriate position near A.

Thus, according to the present embodiment, the engaged holes 27 into which the engaging protrusions 28 are inserted are formed in the upper or lower engaged holes 27 depending on the height dimension of the fuel tank 2. To the fixed bracket 24 and the movable bracket 2
By moving 5 in the vertical direction, one type of mounting bracket 22 can be used for various fuel tanks 2 having different height dimensions, so that the number of types of mounting bracket 22 can be significantly reduced, The cost can be reduced significantly. Moreover, by reducing the number of types of mounting brackets 22, it is possible to suppress the occurrence of erroneous assembly, improve the assembly workability, and significantly improve the yield and the productivity.

Further, in this embodiment, the engaging mechanism 26 extends in parallel from the opening-side end surface 24B of the fixed bracket portion 24 to penetrate therethrough, and the engaged holes 27, 2 arranged in the vertical direction are provided.
.., provided with the movable bracket portion 25, extending parallel to the engaged holes 27 and engaging with the engaged holes 27 at the most inserted position 4 Since it is composed of the book engagement projections 28, 28, ..., The movable bracket is fixed to the fixed bracket portion 24 only by selecting any four of the engaged holes 27 and inserting the engagement projections 28. Part 25
Can be connected to fix the fuel pump 6, and the workability at the time of assembling the fuel supply unit 21 can be greatly improved.

Further, since the fixed bracket portion 24 and the upper case 30A of the fuel filter-pressure regulator assembly 29 are integrally formed on the upper plate 23, the fuel pump 6, the fuel filter 36 and the pressure regulator 37 are integrated. Can be installed, easy to handle,
In addition, assembling workability and maintainability can be improved.

The surplus oil discharged from the surplus oil outlet 40 of the pressure regulator 37 is returned to the inside of the fuel tank 2 through the return passage 35, and the fuel filter 3
Since 6 is disposed so as to surround the return flow passage 35, the inside of the casing 30 can be effectively used without waste, and a flow passage for discharging excess oil to the outside of the casing 30 is unnecessary. Therefore, the structure of the fuel filter-pressure regulator assembly 29 can be simplified, the size can be reduced, and the assembling workability can be improved.

In the above embodiment, the case where the fixed bracket portion 24 is provided with the engaged holes 27 and the movable bracket portion 25 is provided with the engaging protrusions 28 has been described as an example.
As in the modification shown in FIG. 5, each engaging protrusion 28 'may be provided on the fixed bracket portion 24, and each engaged hole 27' may be provided on the movable bracket portion 25.

Further, in the above embodiment, the engaging mechanism 26 is engaged with each engaged hole 27 and the engaging claw 28 for engaging with each engaged hole 27.
Although it is configured with each engagement protrusion 28 having A, any movable bracket 25 can be connected to the fixed bracket 24 and the movable bracket 25 can be vertically moved with respect to the fixed bracket 24. It is not limited to.

Further, in the above embodiment, the fuel filter
The casing 30 of the pressure regulator assembly 29 includes a tubular upper case 30A with a lid and a tubular lower case 30 with a bottom.
Although it is formed from B, the casing may be formed by, for example, extending an upper case having a cylindrical shape with a lid in the axial direction and closing the lower opening with a bottom lid. The casing may be formed by extending the lower case in the axial direction and closing the upper opening with a lid.

[0049]

As described in detail above, according to the invention of claim 1, the fuel pump is arranged between the fixed bracket portion and the movable bracket portion, and in this state, the fuel pump is engaged with any of the engaged portions. By engaging the joint portion, the movable bracket portion can be fixed to the fixed bracket portion to fix the fuel pump in the circumferential direction, and the support portion of the movable bracket portion can fix the fuel pump in the vertical direction. When the mounting height position of the fuel pump is changed, the movable bracket portion is moved in the vertical direction by shifting the engaging position of each engaged portion and the engaging portion in the vertical direction. Since the mounting position of the fuel pump can be changed together with the bracket portion, the mounting bracket can be used for other fuel tanks having different height dimensions, and the type of mounting bracket can be reduced to reduce the manufacturing cost. Moreover, by reducing the number of types of mounting brackets, it is possible to suppress the occurrence of erroneous assembly, improve the workability of assembly, and improve the yield and productivity.

Further, according to the invention of claim 2, the fuel pump can be surrounded between the fixed bracket portion and the movable bracket portion, the fuel pump can be securely fixed, and the engaging projection is engaged with the engaged hole. The movable bracket can be fixed to the fixed bracket simply by inserting, and the assembling workability can be improved.

Further, according to the invention of claim 3, the fuel discharged from the fuel pump is introduced into the fuel filter-pressure regulator assembly through the discharge port and the inflow port, and is filtered by the fuel filter while being filtered by the pressure regulator. Discharge from the outlet to the fuel supply pipe while adjusting to a predetermined fuel pressure,
Since the surplus oil can be directly discharged into the fuel tank, the fuel pump, the fuel filter and the pressure regulator can be collectively arranged, and the assembling workability and the maintainability can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a fuel supply unit according to an embodiment.

FIG. 2 is an external perspective view showing the mounting bracket and the fuel pump in FIG. 1 in a disassembled state.

FIG. 3 is an enlarged vertical cross-sectional view of the fuel filter-pressure regulator assembly in FIG.

FIG. 4 is a vertical cross-sectional view showing a fuel supply unit using another fuel tank having a large height.

FIG. 5 is an external perspective view showing an exploded mounting bracket according to a modified example.

FIG. 6 is an overall configuration diagram showing a fuel injection device using a fuel supply unit according to a conventional technique.

[Explanation of symbols]

 2, 2'fuel tank 2A bottom surface 2C top surface 6 fuel pump 21, 21 'fuel supply unit 22 mounting bracket 23 upper plate 24 fixed bracket portion 25 movable bracket portion 25C support portion 26 engagement mechanism (engagement means) 27, 27 'Engagement hole (engaged part) 28, 28' Engagement protrusion (engagement part) 29 Fuel filter-pressure regulator assembly 36 Fuel filter 37 Pressure regulator

Claims (3)

[Claims] 1. A fuel supply unit comprising a fuel tank containing a fuel, a mounting bracket provided on the upper side of the fuel tank, and a fuel pump suspended in the fuel tank via the mounting bracket, The mounting bracket includes an upper plate fixed to an upper surface of the fuel tank, a fixed bracket portion extending from a lower surface side of the upper plate toward a bottom surface of the fuel tank, and the fuel between the fixed bracket portion. A movable bracket portion that surrounds the pump and is provided with a support portion that supports the fuel pump from the lower side on the lower end side, and a plurality of vertical brackets is provided on one of the fixed bracket portion and the movable bracket portion. By selectively engaging the engaged part provided on the other bracket part with the engaged part, it is possible to attach to the fixed bracket part. A fuel supply unit comprising: an engaging means for fixing the dynamic bracket portion. 2. The fixed bracket portion and the movable bracket portion are formed in an arc shape surrounding a fuel pump, and the engaged portion is an engaged hole provided on the opening end side of one bracket portion, The fuel supply unit according to claim 1, wherein the engaging portion is an engaging protrusion provided on the opening end side of the other bracket portion. 3. An upper plate of the mounting bracket is provided with a fuel filter-pressure regulator assembly having a fuel filter and a pressure regulator, the inlet of the fuel filter-pressure regulator assembly being the outlet of the fuel pump. 3. The structure according to claim 1, wherein the connection is made and the outlet is connected to a fuel supply pipe outside the fuel tank.
The fuel supply unit described in.