KR101528280B1 - Fuel supply apparatus using connection structure of braket and anti-vibration - Google Patents

Abstract

The present invention relates to an anti-vibration structure and a bracket connection structure type fuel supply apparatus. A fuel pump module comprises a mounting part and an operating part for transferring fuel to an engine. The present invention has effects of having a simple combination structure wherein only the upper surface is hanging on the upper part of the inner circumference of a fuel tank and fixed while the bottom surface of a fuel pump module is not attached to the bottom surface inside the fuel tank; and not directly transferring vibrations of the operating part to the fuel tank and a vehicle when the fuel pump module is operated by applying an anti-vibration member to a connecting part between the mounting part and the operating part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fuel supply system,

A fuel pump module comprising a mounting portion and an operating portion is fastened by a bracket connection structure that hangs on the inner upper end of the fuel tank and a vibration proof member is applied to the fastening structure between the mounting portion and the operation portion, To prevent a vibration generated in the vehicle from being transmitted to the vehicle.

A fuel tank for storing fuel is provided in a vehicle such as a gasoline engine or a diesel engine and the fuel tank is provided with a fuel pump for forcibly supplying fuel to the engine, The fuel pump is divided into a DC fuel pump and a BLDC fuel pump depending on the presence or absence of a brush (BRUSH).

Generally, the BLDC fuel pump related to the present invention supplies electric power to the STATOR (stator) through the terminal & connector when the engine start switch of the vehicle is ON, and when the electric power is supplied to the STATOR The BLDC fuel pump is capable of discharging the fuel in the fuel tank and the fuel discharged through the BLDC fuel pump is supplied to the engine at a constant pressure. do.

Various techniques are provided in addition to the patent documents 1 to 4 attached to the technology related to the fuel pump used in the vehicle.

In the BLDC fuel pump module for a vehicle of Patent Document 1, Patent Document No. 10-1075795, a guide rod can be cut to an appropriate length in accordance with the specification of the fuel pump module so that profitability is good and the economical burden due to the securing of the stock is not increased Technology.

In the BLDC fuel pump for vehicle of Patent Publication No. 10-0993665 of Patent Document 2, the pressure of the contact surface of the commutator of the carbon brush that supplies the power to the armature through the commutator can be always kept constant, so that the generation of the fuel oil film layer can be suppressed And provides a technique for stably maintaining the performance of the fuel pump.

In the BLDC fuel pump for vehicles of Patent Publication No. 10-0953409 of Patent Document 3, the discharge performance (discharge pressure and discharge amount) can be improved without increasing the number of rotations of the impeller, which is suitable for a high output engine, So that the durability is increased and thus the life of the product can be prolonged.

In the fuel pump fixing structure of the fuel supply module for a vehicle of Patent Publication No. 10-0773370 of Patent Document 4 provided by the applicant of the present invention, the soundproof / dustproof efficiency against noise / vibration generated by driving the fuel pump is improved, Thereby reducing the number of parts for fixing and simplifying the structure.

However, such a conventional fuel pump is manufactured by welding all of the coupling / contacting portions when assembling or assembling a plurality of components as described above at the time of manufacturing. However, such a welding operation requires a long time for the welding process, It is difficult to precisely weld the joints / contact portions of the products, and it is inconvenient to manufacture and assemble the fuel pump.

However, since such a conventional fuel pump is manufactured by separately manufacturing a case into which a motor pump is inserted and a case into which a filter is inserted at the time of manufacture, it takes a lot of time to manufacture such a fuel pump, There is a problem in that it often occurs.

The conventional fuel pump has a structure in which the bottom surface of the fuel pump module is closely fixed to the inner bottom surface of the fuel tank and mechanically controls the pressure in the regulator so that the vibration of the vehicle is transmitted to the fuel pump module , There is a problem that the consumed electric power and the fuel consumption of the vehicle are lowered because it was a fixed flow rate supply mode that supplies constant pressure and fuel constantly at all times regardless of the condition or state of the vehicle.

In addition, in the case of the vibration and noise generated when the fuel pump module is driven to suck fuel, there is a problem that the fuel pump module is directly transmitted to the fuel tank and the vehicle connected to the fuel pump module.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fuel pump module for transferring fuel to an engine, in which a bottom surface of a fuel pump module installed in a fuel tank is closely attached to a bottom surface of a fuel tank And a bracket connecting structure in which only the upper surface of the fuel pump module is fixed and fixed to the fuel tank. The vibration generated during operation of the operating portion (motor pump) of the fuel pump module is directly transmitted to the vehicle side And a fuel supply device of a bracket-connected structure type that can solve the problem by applying anti-vibration members to the first and second connection parts between the mounting part and the operation part of the fuel pump module.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above problems, the present invention provides a fuel supply device installed inside a fuel tank (10) for feeding fuel to an engine, the fuel supply device comprising: A mounting portion 30 installed so as to be in line with the upper surface of the fuel tank 10 and communicating with the engine; The lower surface of the fuel tank 10 is separated from the bottom surface of the fuel tank 10 and has a bracket coupling structure. The motor pump 60, (50) which comprises a fuel tank (70) for sucking fuel in the fuel tank (10) and removing foreign matter and transferring the fuel to the engine; A first connection part 31 connecting the mounting part 30 to the motor pump 60; A second connection part 41 connecting the mounting part 30 to the filter part 70; First and second vibration preventing members (35, 45) installed on the first and second connecting portions (31, 41) to prevent vibration generated in the operating portion (50) from being transmitted to the vehicle; And a control unit.

As described above, the present invention has a simple bracket connection structure in which the bottom surface of the fuel pump module coupled to the fuel tank is not in close contact with the bottom surface of the fuel tank, and only the top surface is suspended from the fuel tank.

The present invention is also applicable to a fuel pump module in which vibration of an operating portion, in which a motor pump is installed and driven by a fuel pump module, is applied directly to a fuel tank and a vehicle by applying a vibration preventing member to first and second connecting portions between a mounting portion and an operating portion, There is an effect not to be transmitted.

Further, since the motor pump and the filter unit are provided inside the case after the fuel pump module is injection-molded as an integrated case, the manufacturing process is reduced compared with the case where the case of each of the motor pump and the filter unit is manufactured and assembled, There is an effect of saving.

Further, according to the present invention, the fuel tank is used in a dual form consisting of main and sub, so that it is possible to supply fuel more stably than when only a single tank of fuel is used.

1 is an exploded perspective view of a dustproof structure and a bracket-connected structural fuel supply device according to an embodiment of the present invention.
Figure 2 is a front view of Figure 1;
3 is a perspective view of an embodiment showing a dustproof structure and a bracket-connected structural fuel supply device according to the present invention.
FIG. 4 is a conceptual diagram showing an embodiment in which a dustproof structure and a bracket-connected structural fuel supply device according to the present invention are installed in a fuel tank.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Furthermore, terms such as " first "and" second "are used herein for the purpose of description and in the appended claims, and are not intended to indicate or imply their relative importance or purpose.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In an embodiment of the present invention, a fuel supply device installed in a fuel tank (10) for transferring fuel to an engine is provided with a fuel tank (10) A mounting portion 30 which is installed so as to be positioned on the same line as the upper surface of the engine 30 and communicates with the engine; The lower surface of the fuel tank 10 is separated from the bottom surface of the fuel tank 10 and has a bracket coupling structure. The motor pump 60, (50) which comprises a fuel tank (70) for sucking fuel in the fuel tank (10) and removing foreign matter and transferring the fuel to the engine; A first connection part 31 connecting the mounting part 30 to the motor pump 60; A second connection part 41 connecting the mounting part 30 to the filter part 70; First and second vibration preventing members (35, 45) installed on the first and second connecting portions (31, 41) to prevent vibration generated in the operating portion (50) from being transmitted to the vehicle; And a control unit.

The first connection portion 31 includes first and second fitting protrusions 32 and 33 formed on the bottom surface of the mounting portion 30 and the motor pump 60, respectively. A fixed pipe (34) to which both ends of the first and second fitting protrusions (32, 33) are fitted and fixed; A guide pipe 34a surrounding the outer periphery of the fixed pipe 34; A first anti-vibration member 35 fitted and fixed to the fixed pipe 34 at both ends of the guide pipe 34a to prevent the vibration of the operation unit 50 from being transmitted to the mounting unit 30; A ring member 37 fastened to an end of the fixing pipe 34 passing through the second fitting protrusion 33 so as not to detach the fixing pipe 34 from the second fitting protrusion 33; And a control unit.

In addition, the second connection portion 41 may include a fastening piece 42 extending downward from the bottom surface of the mounting portion 30 to the filter portion 70 and having a fastening groove 43 formed therein; A fastening protrusion 47 protruding from the outer periphery of the filter unit 70 so as to be fitted to the fastening groove 43; A dustproof mount part 44 formed on the outer circumferential part of the filter part 70 on both sides of the fastening protrusion 47 and in contact with the fastening piece 42 in the longitudinal direction of the filter part 70; The fastening piece 42 is provided to the vibration-proof seating part 44 so that when the fastening groove 43 is engaged with the fastening protrusion 47, the vibration generated in the actuating part 50 is not transmitted to the mounting part 30. [ A second anti-vibration member 45 which is in contact with the first anti-vibration member 45; And a control unit.

The fuel tank 10 is partitioned into a plurality of fuel storage spaces of the main tank 11 and the sub tank 13. The fuel pump 10 includes a fuel pump module including the mounting portion 30 and the operation portion 50, The main tank 11 is provided with a main tank 11 for supplying fuel to the main tank 11 and discharging fuel from the sub tank 13 at a negative pressure due to the high- Is filled.

The operation unit 50 includes a motor pump case A in which a motor pump 60 is inserted to suck fuel from the fuel tank 10 and a filter unit 60 for filtering the fuel sucked in the motor pump 60. [ (B) of the filter case (70) is injected into the integrated case (C).

In addition, the fuel pump module 20 senses the internal pressure of the fuel pump module 20 in real time, and controls driving of the motor pump 60 so that the pressure and the amount of supplied fuel differ according to the state of the vehicle And a pressure sensor 39a for improving fuel economy of the vehicle.

Hereinafter, a dustproof structure and a bracket-connected structural fuel supply system according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.

The dustproof structure and the bracket-connected structural fuel supply device according to the present invention includes the fuel tank 10, the fuel pump module 20, the mounting portion 30, the operation portion 50, the first connection portion 31, the second connection portion 41, , And first and second anti-vibration members (35, 45).

The fuel tank 10 is installed in the vehicle and is filled with fuel F. In the present invention, the interruption of the fuel tank 10 is divided into a main tank 11 and a sub tank 13 And has a plurality of fuel storage spaces.

For this, the fuel tank 10 has a saddle-shaped structure in which the inner bottom surface of the fuel tank 10 is protruded upward by a predetermined length, but the fuel tank 10 is not completely divided, And the sub tanks (13).

The fuel pump module 20 is installed inside the fuel tank 10 to take in the fuel in the fuel tank 10 and transfer it to the engine E. [ The fuel pump module 20 for this purpose comprises a mounting portion 30 and an operating portion 50.

The fuel pump module 20 according to the present invention includes a motor pump case A in which a motor pump 60 is mounted and a filter case 70 in which a filter unit 70 is mounted on one side of the motor pump 60, (C) of the fuel pump module 20 are integrally formed so that the motor pump case A and the filter part case B are integrated with each other, And then the motor pump 60 and the filter unit 70 are inserted into the fuel pump module 20. As a result, manufacturing time and manufacturing cost are reduced, and the number of manufacturing processes is reduced, as compared with the case where the individual cases into which the motor pump 60 and the filter unit 70 are inserted are assembled and assembled integrally, It is possible to reduce the defective rate to be generated.

In addition, the fuel pump module 20 includes a mounting portion 30 positioned at the upper end and an operating portion 50 integrally formed with the lower end of the mounting portion 30 so as to be integrated with each other. The present invention is not limited to a structure in which the bottom surface of the fuel pump module 20 is in close contact with the inner bottom surface of the fuel tank 10 as in the prior art, but a mounting portion 30 positioned at an uppermost one of the fuel pump modules 20, 10, the upper surface of the mounting portion 30 is located on the same line as the upper surface of the fuel tank 10 and is fastened and fixed to correspond to each other, and the operation portion (not shown) mounted on the lower end of the mounting portion 30 The entire lower surface of the fuel pump module 20 is separated from the bottom surface of the fuel tank 10 without being in contact with the bottom surface of the fuel tank 10, It is possible to receive less vibration of the fuel tank 10 (or the engine) transmitted from the fuel tank 10 by having a simple bracket connection structure in which the fuel tank 10 is fixed and suspended.

In the case of this fuel pump module 20, the vibration generated in the motor pump 60 during operation of the actuating part 50 is transmitted to the fuel tank 10 The first and second vibration preventing members 35 and 45 are provided on the first and second connecting portions 31 and 41 between the mounting portion 30 and the operating portion 50 so that the first and second connecting portions 31 and 41 are not directly transmitted to the vehicle.

The first connection portion 31 is for connecting the mounting portion 30 to the motor pump 60 (more specifically, the motor pump case A) of the structure of the operating portion 50, A guide pipe 34a, a first anti-vibration member 35, and a ring member 37. The first and second anti-vibration members 32 and 33, the fixed pipe 34, the guide pipe 34a,

A first fitting protrusion 32 protrudes toward the lower end of the mounting portion 30 and a second fitting protrusion 33 is formed on the outer peripheral side of the motor pump 60 of the opposed operating portion 50 Respectively.

The fixing pipe 34 is erected upright and both ends of the fixing pipe 34 are inserted into the first and second fitting protrusions 32 and 33. The upper end of the fixing pipe 34 is inserted into the first fitting protrusion 32 And the lower end thereof protrudes to the outside through the second fitting protrusion 33.

The guide pipe 34a has a tubular shape in which the inside is longitudinally penetrated so that the above-described fixed pipe 34 is inserted therein.

The first vibration preventing member 35 is fixed to both ends of the guide pipe 34a and fixed to the fixed pipe 34 so that vibration generated in the actuating part 50 is transmitted to the upper part through the first connecting part 31, Thereby preventing the fuel from being delivered to the fuel tank 10 and the vehicle.

The first anti-vibration member 35 for this purpose is formed so that both ends of the first anti-vibration member 35 are thinner than the thickness of the intermediate portion. In the case of the first anti-vibration member 35 positioned at the upper end of the guide pipe 34a, A first anti-vibration member 35 positioned at the lower end of the guide pipe 34a is provided so as to be securely fixed to the first fitting protrusion 32 and the guide pipe 34a, Both ends thereof are fitted and fixed in the guide pipe 34a and the second fitting protrusions 33 and serve as dust prevention.

The ring member 37 has a shape in which the upper end of the fixing pipe 34 is inserted into the first fitting protrusion 32 while the lower end of the fixing pipe 34 is protruded to the lower end through the second fitting protrusion 33, . In addition, a ring groove 36 is formed in a ring-shaped outer peripheral edge of the lower end of the fixed pipe 34 projecting in this manner. Therefore, in the present invention, the ring member 37 (ex: E-RING) fitted in correspondence with the ring groove 36 is inserted, the fixing pipe 34 fitted to the second fitting protrusion 33 is lifted upward, The ring member 37 inserted into the ring groove of the end portion of the fixed pipe 34 which protrudes to the outside through the second fitting projection 33 is caught by the lower end of the second fitting projection 33, ) Is not removed.

The second connection portion 41 is for fastening and fixing the mounting portion 30 and the operating portion 50 together with the first connection portion 31 described above and includes a fastening piece 42, a fastening protrusion 47, (44) and a second anti-vibration member (45).

To this end, the mounting portion 30 vertically extends downward toward the bottom surface, and a fastening groove 43 is formed in the fastening piece 42.

The fastening protrusion 47 is protruded from the outer periphery of the filter unit case B provided with the filter unit of the operating unit 50 so that the fastening protrusion 47 can be fitted to the fastening groove 43, And the fastening protrusions 47 are fitted in the fastening grooves 43. Of course, in the present invention, a plurality of the fastening pieces 42 and the fastening protrusions 47 should be spaced apart from each other.

The dustproof seating part 44 is formed on both sides of the coupling protrusion 47. The coupling protrusion 47 corresponds to the coupling groove 43 of the outer periphery of the filter part 70, The second vibration preventing member 45 to be described later corresponds to the outer circumferential portion of the filter portion 70 which is in surface contact with the engaging piece 42 on both sides of the projection 47, In the longitudinal direction).

The dustproof seating part 44 is open at the upper part and closed at the lower end and is formed with a rectangular seating space 46 in the longitudinal direction and protrudes. To have a shape.

The second anti-vibration member 45 is installed in correspondence with the above-described anti-vibration seat 44, and is formed to have an I-shaped cross-sectional shape. The second anti-vibration member 45 is inserted into the upper portion of the anti- It is to insert and fix.

The bottom surface of the second vibration preventing member 45 is positioned on the front surface of the dustproof seating portion 44 so that the engaging groove 43 of the fastening piece 42 is engaged with the operation portion The vibration of the actuating part 50 is transmitted to the mounting part 30 by the vibration of the actuating part 50 due to the fact that one side of the connecting piece 42 comes into contact with the second vibration- As shown in FIG.

The fuel pump module 20 including the mounting portion 30 and the operation portion 50 described above is mounted on the motor pump 60, the filter portion 70, the fuel amount measuring portion 80, the external filter portion 90, And a sensor unit 39a.

The motor pump (ex: BLDC pump) 60 is connected to the integrated case C (motor pump case A and filter case B) of the fuel pump module 20 (more specifically, the operation part 50) More specifically, the motor pump 60 includes an operating portion 50 provided in the main tank 11 (which may be provided in the sub tank 13 according to the embodiment of the user) So that the fuel stored in the main tank 11 is sucked and then transferred to the filter unit 70 provided on one side of the motor pump 60. Thereafter, Fuel is discharged from the mounting portion 30, which is coupled to the upper portion of the operating portion 50, to the fuel discharge port 38, which is an engine, a connecting hose, or the like, and is delivered to the engine.

In addition, due to the negative pressure caused by the high-speed injection of the fuel, the motor pump 60 releases fuel to the fuel tank, and the fuel is sucked from the sub tank 13, To be filled.

To this end, the motor pump 60 is provided with a sub fuel supply member 61 having both ends opened, a plurality of first and second inflow outlets 62 and 63 formed at one end and a discharge port 64 formed at the other end The first inflow outlet 62 is connected to the motor pump 60 of the operation part 50 and the second inflow outflow 63 is connected to the sub tank 13 at one time from the mounting part 30 The outlet 64 communicates with the first and second inflow outlets 62 and 63 at the lower end of the first inflow outlet 62 and is connected to the fuel inlet 39 communicating with the connecting hose, (Not shown).

Thus, when the motor pump 60 injects the fuel in the main tank 11 at a high speed into the engine at high speed (the fuel in the main tank 11 is first fed to the engine via the filter unit 70) The negative pressure generated during the fuel injection of the motor pump 60 is transmitted to the first inlet outlet 62 of the sub fuel supply member 61 connected to the motor pump 60, The fuel stored in the sub tank 13 is sucked through the second inflow outlet 63 communicating with one side of the main tank 11 and is mixed with the fuel of the main tank 11 through the discharge port 64 .

The filter unit 70 is installed at one side of the motor pump 60 inside the operation unit 50 and injects fuel of the main tank 11 through the motor pump 60 described above, The fuel injected from the main tank 11 is not directly transferred to the engine when the fuel of the sub tank 13 flows into the main tank 11, And is then transferred to the engine through the fuel discharge port 38 located in the mounting portion 30. [

The fuel amount measuring unit 80 is installed on the outer circumference of the operation unit 50 immersed in the main tank 11 in which the fuel is stored and measures the fuel level in the main tank 11.

The fuel amount measuring unit 80 includes a variable resistance display unit and a float. The float floats on the oil level of the fuel in the fuel tank 10 (main tank 11) and moves up and down according to the height of the oil level, The gauge formed at one end of the actuating portion 50 is in contact with and rotatable with the variable resistance display portion formed on the outer periphery of the actuating portion 50, whereby the remaining amount of fuel is delivered through the variable resistance value. 80 are known in the fuel pump module 20, and the detailed description of the operating principle will be omitted.

The external filter unit 90 is provided on the bottom surface of the operation unit 50 (the fuel pump module 20) so as to correspond to the motor pump 60 that sucks the fuel in the operation unit 50, When the fuel in the main tank 11 is sucked by the motor pump 60, foreign substances are primarily filtered and sucked through the net-shaped external filter unit 90. Then, The foreign matters are filtered through the filter unit 70 installed in the operation unit 50. [

The pressure sensor portion 39a is installed on the upper surface of the mounting portion 30 of the present invention and is installed in the fuel discharge port 38 on the upper surface of the mounting portion 30 having the engine and the connecting hose.

The pressure sensor portion 39a measures the internal pressure of the fuel pump module 20 (the pressure of the fuel discharge port 38) when the fuel is transferred to the engine, and the measured pressure is connected to the fuel pump module 20 The ECU transmits a signal to an electronic control unit (ECU) of the vehicle, and the ECU grasps the state of the vehicle through the received pressure to control the driving of the motor pump 60 that sucks and injects the fuel. )

That is, the optimum pressure and the fuel amount are pre-designated in accordance with the type of the vehicle and various conditions of the respective vehicles (such as the amount of the fuel supplied to the vehicle at the time of stopping, stopping, and various pressure values) The fuel pressure regulator 100 for controlling the pressure of the fuel flowing to the engine side is provided at the lower end of the fuel pump module 20 of the present invention. It is installed more.)

This reduces power consumption and improves fuel economy compared to a vehicle equipped with a fuel pump module 20 that is conventionally regulated in pressure by a regulator and supplies only a fixed fuel flow rate to the engine at all times.

In addition, in the present invention, a cup-shaped auxiliary fuel cup 12 is protruded upward from the bottom surface of the main tank 11 on which the fuel pump module 20 having the above structure is installed, The bottom surface of the pump module 20 can be positioned within the auxiliary fuel cup 12 for a predetermined length so that the fuel pump module 20 sucks fuel in the main tank 11 inside the auxiliary fuel cup 12 .

Of course, the auxiliary fuel cup 12 must have a structure (e.g., an outer periphery or the like communicating with the main tank 11) communicating with the main tank 11 and the auxiliary fuel cup 12 is provided in the main tank with a fuel pump module 20 ) To reduce the flow of the fuel due to the vibration of the fuel tank 10 and to prevent the problem of fuel suction of the fuel pump module 20 from occurring.

Further, a recovery line is further provided between the fuel pump module 20 and the engine E so that the fuel can be returned to the engine, returned to the engine, and then returned to the main tank 11 through the fuel pump module 20 .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: fuel tank 11: main tank
12: auxiliary fuel cup 13: sub tank
20: fuel pump module 30: mounting part
31: second connecting portion 32: first fitting projection
33: second fitting projection 34: fixed pipe
35: first discharge member 36: ring groove
37: ring member 38: fuel outlet
39: Fuel intake port 39a: Pressure sensor section
41: second connecting portion 42: fastening piece
43: fastening groove 44: dustproof seat
45: second anti-vibration member 46: seat space
47: fastening protrusion 50: operating part
60: motor pump 61: sub fuel supply member
62: first inlet outlet 63: second inlet outlet
64: exhaust port 70: filter portion
80: fuel amount measuring part 90: external filter part
100: Fuel pressure gauge
A: Motor pump case B: Filter case
C: Case

Claims (5)

1. A fuel supply device installed inside a fuel tank (10) for transferring fuel to an engine,
The upper surface of the fuel tank 10 is installed so as to be positioned on the same line as the upper surface of the fuel tank 10, (30);
The lower surface of the fuel tank 10 is separated from the bottom surface of the fuel tank 10 and has a bracket coupling structure. The motor pump 60, (50) which comprises a fuel tank (70) for sucking fuel in the fuel tank (10) and removing foreign matter and transferring the fuel to the engine;
A first connection part 31 connecting the mounting part 30 to the motor pump 60;
A second connection part 41 connecting the mounting part 30 to the filter part 70;
And first and second vibration preventing members 35 and 45 provided on the first and second connecting portions 31 and 41 to prevent vibration generated in the operating portion 50 from being transmitted to the vehicle,
The first connection part 31 includes first and second fitting protrusions 32 and 33 formed on the bottom surface of the mounting part 30 and the motor pump 60 and first and second fitting protrusions 32 and 33 formed on the first and second fitting protrusions 32 and 33 A guide pipe 34a which surrounds the outer periphery of the fixing pipe 34 and a fixing pipe 34 which is fitted and fixed to the fixing pipe 34 at both ends of the guide pipe 34a, A first anti-vibration member 35 for preventing the vibration of the operating portion 50 from being transmitted to the mounting portion 30, and a second anti-vibration member 35 fastened to the end portion of the fixing pipe 34 passing through the second fitting projection 33, And a ring member (37) for preventing the fixing pipe (34) from being detached from the second fitting projection (33)
The second connection portion 41 extends from the bottom surface of the mounting portion 30 downward to the filter portion 70 and includes a fastening piece 42 having a fastening groove 43 formed therein, A fastening protrusion 47 protruding from the outer circumference of the filter unit 70 so that the fastening protrusion 47 can be fitted to the filter unit 70 and a filter unit 70 in which the fastening unit 42 is in surface contact on both sides of the fastening protrusion 47. [ A dustproof seating portion 44 formed in an outer peripheral portion of the filter portion 70 in the longitudinal direction thereof and a dustproof seat portion 44 provided in the dustproof seating portion 44. When the coupling groove 43 is engaged with the fastening protrusion 47, And a second anti-vibration member (45) which is in contact with the fastening piece (42) so that vibration generated in the operation part (50) is not transmitted to the mounting part (30)
The inside of the fuel tank 10 is partitioned to form a plurality of fuel storage spaces of the main tank 11 and the sub tank 13. A fuel pump module 20 composed of the mounting portion 30 and the operation portion 50, Fuel in the main tank 11 is discharged from the sub tank 13 at a negative pressure due to the high-speed injection of the fuel, However,
The operation unit 50 includes a motor pump case A in which a motor pump 60 is inserted to suck fuel from the fuel tank 10 and a filter unit 70 that filters the fuel sucked in the motor pump 60. [ The filter case B of the first embodiment is constituted by being injected into the integral case C,
The main tank 11 is formed with an auxiliary fuel cup 12 filled with the fuel of the main tank 11 on an inner bottom surface opposed to the lower end of the fuel pump module 20, And the partition wall is formed around the fuel pump module 20 in the main tank 11 so that the flow of the fuel due to the vibration of the fuel tank 10 can be suppressed So as to prevent the problem of fuel suction of the fuel pump module (20) from occurring.
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