JP2002054520A - Fuel pump module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel pump module reducing the number of part items to be strong against a vibration of a vehicle. SOLUTION: This fuel pump module, having a reservoir 13 formed in an inner surface of a lower case 2, a fuel passage 6 guiding fuel in the reservoir to an engine, a pressure control device 8 held in the lower case to control a pressure of fuel in the fuel passage, and an upper case 4 crowned to be mounted in the lower case, comprises mounting parts 3 provided in the inside of the reservoir in the inner surface of the lower case and press parts 5 provided to protrude in an inner surface of the upper case corresponding to the mounting parts, the pressure control device is held to be interposed by the mounting parts and the press parts. An auxiliary passage 7 respectively connecting the mounting parts, the fuel passage, and a strainer for purifying fuel is erected. Return fuel from the pressure control device fixedly held is returned into the reservoir.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel pump module for an automobile or the like.

[0002]

2. Description of the Related Art A conventional fuel pump module includes a reservoir formed in a lower case, a pressure control device fixed in the lower case, and an upper case mounted on the lower case. The pressure control device is held and fixed in the lower case by a connector so that the pressure in the pipe is constantly adjusted by the pressure control device, and the reservoir and the pressure control device are connected via the connection device. . The pressure control device is fixed not only to the lower case but also to a strainer (filter) and a reservoir.

Further, a fuel pump, a strainer, and the like are held in an upper case mounted on the lower case, and a connection cover is attached to the upper case for connecting one end of each of the fuel pump and the strainer. Thereby, the fuel passage provided in the connection cover is connected to the outlet of the fuel pump and the inlet of the strainer.

On the other hand, for example, Japanese Patent Application Laid-Open No. H11-264356
In the publication, an electric pump device is disclosed. The electric pump device includes a composite connection unit provided on the fuel pump by integrally molding the discharge pipe and the coupler, a fuel pipe connected to the discharge pipe, and a mating coupler integrally formed on the fuel pipe and connected to the coupler. have. With this structure, the size of the fuel pump is reduced.

[0005]

However, in the above-mentioned prior art, since the pressure control device is fixed in the lower case by the connecting member, the number of parts for manufacturing the fuel pump module is increased. In addition, since the pressure control device was fixed only by the connection tool, it was weak against vehicle vibration. Therefore, when the vehicle travels, the pressure control device may come into contact with the lower case due to vibration, and noise (abnormal noise) may be generated.

Further, when the connection cover is assembled to the upper case, it is necessary to position the delivery port and the introduction port with respect to the fuel passage and the connection cover with respect to the upper case, respectively. The workability of assembling was bad.

[0007] On the other hand, in the other conventional techniques described above, when the fuel pump is further downsized, the combined connection unit is also downsized accordingly. Therefore, the counterpart coupler must be downsized corresponding to the coupler of the composite connection unit. As described above, when the size of the coupler and the mating coupler are reduced, it is difficult to manufacture the coupler and the coupler, and the work of fitting the two and electrically connecting them is very troublesome.

Further, even if an attempt is made to reduce the size of the coupler and the mating coupler, there is a restriction in terms of the layout of the fuel pump in reducing the size. Therefore, there is a disadvantage that the fuel pump cannot be reduced in size to a desired size.

Further, when the size of the fuel pump module is reduced, the size of parts is also reduced, so that the holding force for holding the strainer, the pressure control device, the fuel pump and the like is reduced.

It is an object of the present invention to provide a fuel pump module which has a reduced number of parts, is resistant to vehicle vibration, and has improved assembly workability.

Another object of the present invention is to provide a fuel pump module capable of easily connecting a coupler to a mating coupler even if the fuel pump is downsized.

Another object of the present invention is to provide a fuel pump module which improves a holding force for holding at least one of a fuel pump and a pressure control device.

[0013]

A fuel pump module according to the present invention includes a reservoir formed on an inner surface of a lower case, a fuel passage for guiding fuel in the reservoir to an engine,
A pressure control device that is held in the lower case and controls a fuel pressure in the fuel passage, and a fuel pump module having an upper case mounted on the lower case, wherein the inner surface of the lower case is A mounting portion provided inside the reservoir, and a pressing portion protruding from the inner surface of the upper case corresponding to the mounting portion, wherein the pressure control device is sandwiched between the mounting portion and the pressing portion. It is characterized by the following.

According to the present invention, the mounting portion is provided inside the reservoir on the inner surface of the lower case. A pressing portion corresponding to the mounting portion is provided to protrude from the inner surface of the upper case. for that reason,
When the upper case and the lower case are attached to each other, the pressure control device is clamped and fixed by the mounting portion and the pressing portion.

Further, the fuel pump module according to the present invention is characterized in that an auxiliary passage communicating with the mounting portion, a fuel passage and a fuel purification strainer is provided.

According to the present invention, the auxiliary passage is provided between the mounting portion and each of the fuel passage and the strainer. Therefore, by mounting the pressure control device on the mounting portion, the pressure control device is automatically connected to the fuel passage and the strainer via the auxiliary passage.

Further, the fuel pump module according to the present invention is characterized in that the return fuel from the pressure control device held and fixed by the mounting portion and the pressing portion is returned into the reservoir.

According to the present invention, the return fuel from the pressure control device is returned to the reservoir. Therefore, despite the provision of the reservoir, the fuel in the reservoir is not discharged out of the reservoir.

In addition, in the fuel pump module according to the present invention, auxiliary passages are respectively connected to the mounting portion, the fuel passage and the fuel purification strainer, and are held and fixed by the mounting portion and the pressing portion. The return fuel from the pressure control device is returned to the reservoir.

According to the present invention, the auxiliary passage is provided between the mounting portion and each of the fuel passage and the strainer. Therefore, by mounting the pressure control device on the mounting portion, the pressure control device is automatically connected to each of the fuel passage and the strainer. Also, the return fuel from the pressure control device is returned to the reservoir. for that reason,
Despite the provision of the reservoir, the fuel in the reservoir is not discharged out of the reservoir. At that time, the pressure of the fuel sent to the fuel passage is adjusted by the pressure control device, and the surplus fuel at this time is returned to the reservoir.

Further, the fuel pump module according to the present invention is characterized in that a longitudinal direction of the pressure control device is substantially parallel to a direction in which the pressure control device is inserted into the mounting portion.

According to the present invention, after the upper case and the lower case are crowned, the pressure control device sets the mounting portion and the pressing portion in a state where the longitudinal direction is substantially parallel to the insertion direction of the pressure control device. And is sandwiched between. Therefore, the space for disposing the pressure control device in the lower case and / or the upper case becomes narrower in a direction intersecting the insertion direction of the pressure control device.

In addition, the fuel pump module according to the present invention comprises a case with a cover in which the connecting case for connecting each end of the fuel pump and the strainer held by the upper case and the upper case are integrally formed; A pump bottom cover for fixing the other end of the fuel pump to the case with the cover, and by pushing the fuel pump and the strainer into the connection cover respectively, the fuel pump and the strainer are respectively connected to the communication passages in the connection cover. It is characterized by being connected.

According to the present invention, the case with the cover is formed by integrally molding the upper case and the connection cover. Therefore, by pushing the fuel pump and the strainer into the case with the cover, respectively, the fuel pump and the strainer are automatically connected to the communication passage of the connection cover.

The fuel pump module according to the present invention is characterized in that the fuel pump is provided in a pump housing, a pump driving section driven in the pump housing, and a projecting state provided in the pump housing. And at least one terminal for supplying power to the cover body, wherein the connection cover has a cover body, a coupler housing integrally formed with the cover body, and a terminal hole formed in the coupler housing to insert the terminal. Wherein the fuel pump and the strainer are connected to the connection cover and the terminal is inserted into the terminal hole to form a coupler electrically connected to a mating coupler. According to the invention, the pump housing of the fuel pump protrudes at least one terminal. A coupler housing is formed integrally with the cover body of the connection cover. By connecting the fuel pump and the strainer to the connection cover, the fuel pump and the strainer are connected via the connection passage, and the terminal of the pump housing is inserted into the coupler housing of the connection cover. That is, the coupler electrically connected to the mating coupler is composed of two parts, the connection cover and the pump housing.

Another fuel pump module according to the present invention includes a lower case, an upper case mounted on the lower case,
A fuel pump and a strainer for purifying fuel held in the lower case; and a connection cover for holding and connecting the fuel pump and the strainer to the upper case and electrically connecting a mating coupler to the fuel pump. A fuel pump module for driving the fuel pump by connecting the fuel pump, wherein the fuel pump has a pump housing and a pump driving unit driven in the pump housing, and is protruded from the pump housing. And at least one terminal provided to supply power to the pump drive unit, a coupler housing integrally formed with the connection cover, and a terminal hole formed in the coupler housing to insert the terminal, and By connecting a pump and a strainer to the connection cover and inserting the terminal into the terminal hole, the counterpart cap is inserted. Characterized by being adapted to form a coupler which is connected to the LA. According to the invention, the pump housing of the fuel pump protrudes at least one terminal. A coupler housing is formed integrally with the cover body of the connection cover. By connecting the fuel pump and the strainer to the connection cover, the fuel pump and the strainer are connected, and the terminal of the pump housing is inserted into the coupler housing of the connection cover. That is,
The coupler electrically connected to the mating coupler is composed of only two parts, the coupling cover and the pump housing.

Further, another fuel pump module according to the present invention is characterized in that the engaged portion for engaging the engaging portion of the mating coupler is provided in the coupler housing. Therefore, since the coupler housing has a portion to be engaged with the engaging portion of the mating coupler, by inserting the mating coupler into the coupler housing,
The engaged portion and the engaging portion are automatically engaged. Thus, the coupling between the mating coupler and the coupler is maintained.

Further, another fuel pump module according to the present invention is characterized in that a hook-shaped electric wire holding portion is integrally provided on an outer surface of the connection cover. Thus, since the hook-shaped electric wire holding portion is integrally provided on the outer surface of the connection cover, the state in which the electric wire bundles are bundled without being dispersed is maintained.

[0029] In addition, another fuel pump module according to the present invention includes a purifying section in which the strainer purifies fuel;
A strainer cover that covers an outer surface of the purifying section, wherein the strainer cover is made of metal. Accordingly, since the strainer has the purifying unit and the metal strainer cover that covers the outer surface of the purifying unit, the strainer can be firmly held and fixed to the lower case.

Another fuel pump module according to the present invention includes a lower case, an upper case mounted on the lower case, a fuel pump disposed in the lower case, a strainer for purifying fuel, and a fuel pump. A pressure control device that regulates the pressure of the fuel pump module, wherein the strainer is a purifier that purifies fuel, and a strainer cover that is formed of the same material as the lower case and covers an outer surface of the purifier. A first cover integrally formed on the lower case by dividing the strainer cover, and a second cover separate from the lower case, and after inserting the purifying unit into the first cover. The second cover is welded to the first cover, and at least one of the fuel pump and the pressure control device is held in the upper case. According to the present invention, the strainer cover of the strainer is formed of the same material as the lower case, and the strainer cover is divided into a first cover formed integrally with the lower case and a second cover separate from the lower case. . After inserting the purifying section into the first case, the first cover and the second cover are welded. This stabilizes the strainer in the lower case.

Still another fuel pump module according to the present invention is a lower case, an upper case mounted on the lower case, a fuel pump disposed in the lower case, and a strainer for purifying fuel. And a pressure control device for adjusting the pressure of the fuel, wherein the strainer has a purifying unit for purifying the fuel, and a strainer cover covering an outer surface of the purifying unit. A first cover formed by dividing the cover and integrally formed with the lower case; and a second cover separate from the lower case, wherein an end of the first cover facing the second cover is engaged with the first cover. An engaging portion is formed at an end of the second cover facing the first cover, and after the purifying portion is inserted into the first cover, the engaging portion is interposed via a seal member. To the engaged part Combined, characterized by holding at least one of said fuel pump and the pressure control device to the upper case. According to the present invention, the strainer cover of the strainer is formed of the same material as the lower case, and the strainer cover is divided into a first cover formed integrally with the lower case and a second cover separate from the lower case. . The engaged portion is formed at an end of the first cover facing the second cover, and the engaging portion is provided at an end of the second cover facing the first cover. The first cover and the second cover are connected to each other via the seal member by engaging the engaged portion and the engaging portion. That is, the first cover and the second cover are fixed with one touch.

In still another fuel pump module according to the present invention, the upper case is formed integrally with the second cover, and at least one of the fuel pump and the pressure control device is connected to the lower case. It is characterized in that it is prevented from falling off. According to the present invention, the upper case holding the pressure control device and the fuel pump is integrally formed with the second cover. Therefore, when the second cover is attached to the first cover, the upper case is automatically mounted on the lower case.
This prevents at least one of the fuel pump and the pressure control device from falling out of the lower case.

[0033]

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

(Embodiment 1) FIGS. 1 to 7 show Embodiment 1 of a fuel pump module according to the present invention.

As shown in FIG. 1, the fuel pump module 1 has an auxiliary portion provided between the mounting portion 3 of the lower case 2, the pressing portion 5 of the upper case 4, and the fuel passage 6 and the mounting portion 3. It is composed of a passage 7 and a pressure control device 8 sandwiched between the mounting portion 3 and the pressing portion 5.

As shown in FIGS. 1 and 2, the lower case 2 is made of synthetic resin, and vertically crosses the bottom wall 11, a peripheral wall 12 provided integrally with the periphery of the bottom wall 11, and the bottom wall 11. And a fuel passage 6. The lower case 2 serves as a reservoir 13 for storing fuel. In addition, a new reservoir (not shown) may be separately formed in the lower case 2.

The bottom wall 11 is provided with a fuel passage 6 which crosses vertically. One end of the fuel passage 6 is connected to the strainer mounting portion 14. The other end of the fuel passage 6 protrudes outside from the bottom wall 11 and serves as a discharge port 15 for guiding fuel to an engine (not shown). The mounting portion 3, the strainer mounting portion 14, and the thermistor mounting portion (not shown) are provided integrally on the bottom wall 11, respectively. A pressure control device 8 is mounted on the mounting section 3, a strainer 9 is mounted on the strainer mounting section 14, and a thermistor 10 is mounted on the thermistor mounting section. Reference numeral 27 denotes an O-ring.

An auxiliary passage 7 is provided between the fuel passage 6 and the mounting portion 3. Therefore, by simply mounting the pressure control device 8 on the mounting portion 3, the pressure control device 8 can be automatically connected to the fuel passage 6 and the strainer 9 via the auxiliary passage 7. In the present embodiment, the auxiliary passage 7 is disposed substantially at right angles to the fuel passage 6, but the arrangement is not limited to this.

As shown in FIGS. 1 and 3, the upper case 4 is made of a synthetic resin and is mounted on the upper portion of the reservoir 13. The upper case 4 has an upper wall 21, a peripheral wall 22 that is formed by hanging from the peripheral edge of the upper wall 21, and a pressing portion 5 that protrudes from the inner surface of the upper wall 21. The upper wall 21 is provided with a hole 23 for a pump, a hole 24 for a strainer, a hole 25 for a thermistor, and a hole 29 for a device. A protection cylinder 26 (see FIG. 8) is integrally formed downward from the periphery of the pump hole 23. The fuel pump 19 is provided in the pump hole 23, the strainer 9 is provided in the strainer hole 24, and the thermistor hole 25 is provided.
Hold the thermistors 10 respectively. The thermistor 10 is used as a sensor for warning the remaining amount of fuel in the reservoir 13.

As shown in FIG. 1, a pressure control device (Pressu
The re / regulator 8 is a device for controlling the fuel pressure in the fuel passage 6. That is, the pressure control device 8 is coupled to the cylindrical device main body 31, the first insertion portion 32 provided at one end (lower end) of the device main body 31, and the other end (upper end) of the device main body 31. And a second insertion portion 33. A flange 34 is provided on the outer surface of the apparatus main body 31 on the other end side. The first insertion part 32 is located in the mounting part 3 of the reservoir 13 and the second insertion part 3
3 are inserted (mounted) into the pressing portions 5 of the upper case 4 respectively. Reference numeral 28 denotes an O-ring.

When the pressure control device 8 is clamped and fixed between the mounting portion 3 and the pressing portion 5, the flange 34 is pressed downward by the pressing portion 5. Thereby, the pressure control device 8 can be reliably held in the vertical direction (vertical direction).

After the holding and fixing, the return flow path 35 of the apparatus main body 31 is provided in the reservoir 13. Therefore, the fuel passage 6 and the fuel pipe 1 are controlled by the pressure control device 8.
The fuel pressure in 8 is regulated. That is, the surplus fuel is returned into the reservoir 13 as described above. As a result, the fuel in the reservoir 13 can be used without waste, and a stable supply of fuel can be realized.

Further, the posture of the pressure control device 8 which is clamped and fixed is substantially parallel to the insertion direction (P direction) of the pressure control device 8 into the mounting portion 3. That is, the axial direction (corresponding to the longitudinal direction in the claims) of the device main body 31 is the pressure control device
Is substantially parallel to the insertion direction (P direction).

As shown in FIGS. 4 and 5, after the fuel pump 19 and the strainer 9 are arranged in the lower case 2, a connection cover 41 is mounted on the upper part of the fuel pump 19 and the strainer 9. The connection between the fuel pump 19 and the connection cover 41 can also be performed by fitting a concave portion formed on one of them and a convex portion provided on the other.
The connection between the strainer 9 and the connection cover 41 is almost the same. The connection between the fuel pump 19 and the strainer 9 and the connection cover 41 is not limited to the above-described means.

A communication passage 42 is formed in the connection cover 41. The communication passage 42 includes a straight passage 43 extending in the longitudinal direction of the connection cover 41, a pump passage 44 and a strainer passage 45 that are substantially orthogonal to the middle of the straight passage 43, and a check valve attached to one end of the straight passage 43. 46. The other end of the straight passage 43 is a closed end. The fuel pump 19 is mounted on the pump passage 44, and the strainer 9 is mounted on the strainer passage 45. Thus, the fuel pump 19 and the strainer 9 are connected via the communication passage 42. Further, when the engine is stopped and the fuel pumping from the fuel pump 19 is stopped, the check valve 46 closes promptly to keep the pressure between the fuel pump and the engine constant.

Reference numerals 47, 48 and 49 are O-rings.

As shown in FIG. 6, an in-tank type fuel pump module 1 mounted in a fuel tank 50 of a vehicle or the like includes:
The fuel tank 50 functions as a kind of sub-tank. That is, a vehicle or the like is traveling on a slope, or (and)
The sub-tank temporarily stores the fuel in the fuel tank 50 so that the fuel is smoothly supplied from the fuel tank 50 to the engine via the fuel pump module 1 even when the vehicle or the like shakes.

Next, the flow of fuel supplied from the fuel tank 50 to the engine via the fuel pump module 1 will be described.

As shown in FIGS. 6 and 7, when the fuel pump module 1 is mounted in a fuel tank 50 of a vehicle or the like,
Fuel flows into the reservoir 13 of the fuel pump module 1 from a fuel inlet 17 provided in the lower case 2. The fuel in the reservoir 13 is drawn into the fuel pump 19 via the pump filter 20 (see FIG. 8), and is connected to the connection passage 42.
Through the strainer 9. Since the auxiliary passage 7 is connected to the fuel passage 6, the fuel from the strainer 9 flows out to the discharge port 15 at an intermediate portion of the fuel passage 6.
The flow branches from the auxiliary passage 7 to the one flowing to the pressure control device 8.

When the fuel from the strainer 9 travels straight through the fuel passage 6, it flows to a discharge port 15 provided integrally on the outer surface of the lower case 2. Since the fuel pipe 18 leading to the engine is connected to the discharge port 15, fuel from the strainer 9 is supplied from the discharge port 15 to the engine via the fuel pipe 18.

The fuel flowing from the strainer 9 into the auxiliary passage 7 flows into the pressure control device 8. The fuel in the fuel passage 6 and the fuel pipe 18 is regulated by the pressure control device 8, so that the fuel pressure is kept substantially constant. Therefore, for example, when the fuel pumping amount from the fuel pump is larger than the fuel injection amount in the engine, the fuel pressure in the fuel passage 6 and the fuel pipe 18 increases, and the fuel is discharged as surplus fuel. Then, the excess fuel is supplied from the pressure control device 8 to the reservoir 1.
3, the fuel pipe 18 is returned.
And the fuel pressure inside the fuel passage 6 is kept constant.

Next, a method of mounting the pressure control device 8 will be described.

As shown in FIG. 1, the first insertion portion 32 of the pressure control device 8 is inserted (mounted) into the mounting portion 3 of the lower case 2 and temporarily locked. As shown in FIG. 1, while the pressing portion 5 of the upper case 4 faces the second insertion portion 33 of the pressure control device 8,
To the lower case 2. After being crowned, a second
The insertion part 33 is pushed in. At the same time, the pressing portion 5 presses the flange 34 of the pressure control device 8 downward. That is, the pressure control device 8 is urged downward from the pressing portion 5 via the flange 34. Therefore, even when vibrations and the like are propagated to the fuel pump module 1 during traveling of the vehicle or the like, the pitching and / or rolling of the pressure control device 8 can be suppressed to a minimum. Thereby, the fixing structure of the pressure control device 8 becomes stronger against vibration as compared with the related art.

The pressure control device 8 clamped and fixed by the upper case 4 and the lower case 2 is held in a vertical direction (vertical state). In that state, the mounting portion 3 of the lower case 2
4, the return flow path 35 of the pressure control device 8 is exposed from between the flange 34 and the mounting portion 3. Further, since the auxiliary passage 7 is provided between the mounting portion 3 and the fuel passage 6, the pressure control device 8 is automatically connected to the fuel passage 6 after the auxiliary passage 7 is clamped and fixed. Therefore, in the mounting part 3,
The function of holding the pressure control device 8 and the function of connecting the pressure control device 8 to the fuel passage 6 can be provided. As a result, the number of parts of the fuel pump module 1 can be reduced as compared with the related art, and the size of the fuel pump module 1 can be reduced.

(Embodiment 2) FIG. 8 shows a fuel pump module 1 'according to Embodiment 2 of the present invention. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The fuel pump module 1 ′ includes a case 53 with a cover formed by integrally molding the upper case 4 and a connection cover 41 attached thereto, and a fuel pump 1 ′.
9 is fixed to the case 53 with a cover.

As shown in FIGS. 3 and 8, the upper case 4 holds a fuel pump 19, a strainer 9, a pressure control device 8, and a thermistor 10, respectively. A connection cover 41 is integrally formed so as to cover one end. Upper wall 2 of upper case 4
1 is provided with a pump hole 23, a strainer hole 24, a device hole 29, and a thermistor hole 25 (see FIG. 3). At the other end of the protection cylinder 26, an engaged portion 26a with the pump bottom cover 54 is provided.

On the other hand, the pump bottom cover 54 has a substantially disc-shaped cover body 55. An elongated hole 55a is formed at the center of the cover main body 55, and an engaging portion 55b for the engaged portion 26a is integrally provided at a peripheral portion. The pump filter 20 is detachably attached to the other end of the fuel pump 19 via a pump bottom cover 54. Slot 5
5a may be a notch.

Next, a method for assembling the fuel pump 4 to the case 53 with a cover will be described.

One end of the fuel pump 4 is inserted into the pump hole 23 from the other end of the protective tube 26, and the delivery port 19 a of the fuel pump 4 is pushed into the pump passage 44 of the connection cover 41. At this time, by simply inserting the fuel pump 19 into the cover case 53, the fuel pump 19 (the outlet 19a) is automatically positioned without positioning the fuel pump 19 (the outlet 19a) with respect to the connection cover 41 (the pump passage 44). 19a can be connected to the pump passage 44 (see FIG. 5).

Then, the pump bottom cover 54 is inserted into the other end of the protection cylinder 26. Engaged part 26a of protection cylinder 26
By engaging the engagement portion 55b of the pump bottom cover 54 with the engagement portion 55b, the fuel pump 19 can be easily fixed to the case 53 with a cover without positioning the connection cover 41 with respect to the upper case 4. The pump filter 20 is detachably provided at the other end of the fuel pump 19 via a long hole 55a of the pump bottom cover 54. In the case where notches are provided in the pump bottom cover 54 instead of the elongated holes 55a, the pump filter 20 does not need to be detachable, and the fuel pump module 1 'is more resistant to vibration.

Similarly, in the case of the strainer 9, by pushing the strainer 9 into the strainer hole 24 of the case 53 with a cover, the introduction port 9 a of the strainer 9 is securely positioned with respect to the strainer passage 45. The strainer passage 45 and the inlet 9a can be connected (see FIG. 5).

As described above, the upper case 4 and the connection cover 41
By integrally forming the case 53 and the case 53 with the cover, an accurate positioning operation can be omitted during the assembling operation, so that the assembling workability of the fuel pump module 1 'can be improved. Further, since the shape of the pump bottom cover 54 is simple, the shape of a molding die for molding the pump bottom cover 54 can also be simplified. Therefore, the fuel pump module 1 'can be manufactured at low cost. Further, since the upper case 4 and the connection cover 41 are integrally formed, the connection between the fuel pump 19 and the strainer 9 and the communication passage 42 is not disconnected due to the vibration, and a more reliable fuel is provided. The structure of the pump module 1 'can be provided.

(Embodiment 3) FIGS. 9 to 13 show a fuel pump module according to Embodiment 3 of the present invention. FIG. 9 is an exploded view of a fuel pump module according to Embodiment 5 of the present invention, and FIG. 10 is a sectional view of a main part in FIG. FIG. 11 is a plan view of the coupling cover in FIG. 9, and FIG. 12 is a cross-sectional view of a main part showing a state where the mating coupler and the coupler in FIG. 10 are connected. FIG. 13 is a top view of the assembled state of FIG.
The same components as those in Embodiments 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 9, the fuel pump module 1A according to the third embodiment forms a coupler 61 with respect to the mating coupler 60 by connecting the connection cover 41 to the fuel pump 19 in order to drive the fuel pump 19. It is a structure to do.

That is, this fuel pump module 1A
A terminal 63 provided in a pump housing 62 of the fuel pump 19, a coupler housing 64 integrally formed with the connection cover 41, and a mating coupler insertion hole 65 (corresponding to a terminal hole in the claims) formed in the coupler housing 64; , And two terminals 63 (the other terminal is omitted in the figure) provided in the fuel pump 19. The mating coupler insertion hole 65 not only allows the terminal 63 to pass through, but also allows the mating coupler 6 to be inserted.
It is also possible to insert 0. Note that the number of terminals 63 is arbitrary. If the coupler housing 64 has a wall (not shown) on the fuel pump 19 side, a hole (not shown) for passing only the terminal 63 can be provided. Further, in the present embodiment, the terminal 63 is a tab-shaped male type, but may be a female type.

As shown in FIG. 9 and FIG.
The pump housing 62 includes a pump housing 62 having a cylindrical shape, a pump driving unit (not shown) provided and driven in the pump housing 62, and a terminal 63 provided to protrude from an upper portion of the pump housing 62. The pump housing 62 is made of a synthetic resin. A terminal insertion hole 62a is formed in an upper portion of the pump housing 62, and a terminal 63 projects from the inside of the pump housing 62 to the outside via the terminal insertion hole 62a. One end of the terminal 63 (the inside of the pump housing 62) is electrically connected to the pump driving section. The other end 63 a of the terminal 63 (outside the pump housing 62) is electrically connected to the mating coupler 60.

As shown in FIGS. 9 and 11, the connecting cover 41 includes a connecting cover body 66 for holding the fuel pump 19 and the strainer 9 and connecting them together, and a connecting cover body 6.
6 and a coupler housing 64 which is disposed on the fuel pump 19 side and is integrally formed. Coupler housing 64
A mating coupler insertion hole 65 having a size that allows the mating coupler 60 to be inserted and vertically penetrating therethrough;
6, a protruding engaged portion 67a provided outside the peripheral wall 67
Consisting of When the fuel pump 19 is mounted on the connection cover 41, the terminal 63 of the pump housing 62 is arranged upright from the mating coupler insertion hole 65. That is, only the terminal 63 is erected on the pump housing 62 so as to correspond to the mating coupler 60, and only the coupler housing 64 is integrally formed with the connection cover 41. A coupler 61 for the mating coupler 60 is formed.

As shown in FIG.
Are a coupler housing 60a and a coupler housing 60
a, a terminal 60c with an electric wire inserted and locked in the terminal accommodating chamber 60b, a lock arm 60d raised above the coupler housing 60a, an operation plate 60e provided integrally with the lock arm 60d, And a hole-shaped engaging portion 60f formed in the plate 60e. Terminal 60 with electric wire
c is a bifurcated female terminal fitting 60g;
g at one end. A locking arm 60h coupled to the coupler housing 60a is disposed in the terminal accommodating chamber 60b.
As a result, the terminal fitting 60g is locked while being urged forward from the rear. In the present embodiment, the terminal fitting 6
0 g is a female type, but a male type is also possible.

As shown in FIGS. 10 and 12, when the mating coupler 60 is inserted into the coupler 61, the operating plate 60e is lifted upward by the engaging portion 60f, and the engaged portion 67a and the engaging portion 60f are engaged. Is done. At the same time, coupler 61
Terminal 63 and the terminal 60 with electric wire in the mating coupler 60
and c are electrically connected to each other.

By adopting such a structure,
As the size of the fuel pump module 1A is reduced, the coupler 61 and the mating coupler 60 are also reduced in size. However, if only the terminal 63 is provided on the pump housing 62 and only the coupler housing 64 is integrally formed on the connection cover 41, it is possible to sufficiently cope with the miniaturization of the fuel pump module 1A.

This is because only the terminal 63 needs to be provided in the pump module 62, and therefore the layout is less subject to layout restrictions depending on the size of the fuel pump 19 as compared with the prior art. At the same time, since only the coupler housing 64 may be integrally formed with the connection cover 41,
Compared with the related art, it is possible to save the trouble of separately forming the coupler 61 having a size corresponding to the size reduction of the fuel pump module 1A. Further, since the coupler 61 for the mating coupler 60 can be easily provided simply by mounting the fuel pump 62 on the connection cover 41, a small terminal corresponding to the fuel pump module 1A which has been reduced in size as compared with the related art. 63 and the coupler housing 64 are formed, and the trouble of fitting the small terminals 63 to the small coupler housing 64 and electrically connecting them is eliminated.

Further, in the present embodiment, FIGS.
As shown in FIG. 3, the cover body 66 of the connection cover 41
A hook-shaped wire holding portion 69 is provided integrally to hold the wire bundle 68. Note that the shape of the electric wire holding portion 69 is not limited to the hook shape, and the electric wire holding portion 69 can also be provided on the connection cover 41 in another embodiment. By providing such an electric wire holding portion 69, after the fuel pump module 1A is assembled, the electric wire bundle 68
Variation can be prevented. And since the electric wire holding part 69 is formed integrally with the connection cover 41, it is not necessary to use a separate member for holding the electric wire bundle 68, and the number of parts of the fuel pump module 1A can be reduced.

(Fourth Embodiment) FIG. 14 shows a fourth embodiment of the fuel pump module according to the present invention, and is a cross-sectional view of a main part of the fuel pump module. In addition,
The same components as those in Embodiments 1, 2, and 3 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 14, a fuel pump module 1 B according to the fourth embodiment includes a lower case 2, an upper case 70 mounted on the lower case 2, and a fuel pump ( It is composed of a strainer 71 and a pressure control device 8 (not shown in FIG. 14). Embodiment 1
In the upper case 4 (see FIG. 1), the fuel pump 1
9, the strainer 9, and the pressure control device 8, but the upper case 70 in the fourth embodiment holds the pressure control device 8. In addition, it is also possible to hold the fuel pump 19 together with the pressure control device 8 in the upper case 70.

The strainer 71 has a purifying section 72 for purifying the fuel, and a strainer cover 73 formed of the same material on the lower case 2 and covering the outer surface of the purifying section 72. And, the strainer cover 73 is an upper strainer cover 74.
(Corresponding to a second cover in the claims) and a lower strainer cover 75 (corresponding to the first cover in the claims). The lower strainer cover 75 is made of the same material as the lower case 2, that is, made of synthetic resin, and is integrally formed with the lower case 2. The upper strainer cover 74 is made of the same material as the lower case 2, that is, made of synthetic resin, but is provided separately from the lower strainer cover 75, that is, the lower case 2.

The purifying unit 72 is provided in the lower strainer cover 75.
After inserting the upper strainer cover 74, the lower strainer cover 75 is covered with the upper strainer cover 74, and the lower end 74a (corresponding to the end of the claim) of the upper strainer cover 74 and the upper end 75a of the lower strainer cover 75 (the end of the claim). Corresponding to each other, for example, by welding. Then, the upper case 70 is attached to the lower case 2 while holding the pressure control device 8 by the upper case 70. As in the first embodiment, the upper wall 70 'of the upper case 70 is formed with a device hole 29 and a pump hole (not shown), and the pressure control device 8 and the fuel pump are held in each hole 29. Is done.

The upper strainer cover 74 is provided with an inlet 76 for supplying fuel from a fuel pump.
The inlet 76 and the fuel pump are connected by a fuel pipe (not shown). The lower strainer cover 75 has a discharge port 8 for discharging the fuel purified by the purification section 72.
0 is formed. Therefore, the fuel in the fuel tank is pumped up by the fuel pump, supplied from the inlet 76 through the fuel pipe by the fuel pump, and
The air is supplied from the outlet 80 to the auxiliary passage 7 through the second outlet 2.

Since the lower strainer cover 75 is formed integrally with the lower case 2, the purification of the strainer 71 can be performed in comparison with the case where the strainer 9 is held in the lower case 2 as in the first embodiment (see FIG. 1). The portion 72 can be stably held on the lower strainer cover 75. Further, since the upper strainer cover 74 is welded to the lower strainer cover 75 while the purifying section 72 is held in the lower strainer cover 75, the strainer 71 can be held more stably after welding, and the holding of the strainer 71 can be maintained. Power can be improved. Therefore, the stable state of the strainer 71 can be synchronized with the stable state of the lower case 2. That is, when the fuel pump module 1B is mounted on a vehicle or the like, as long as the lower case 2 of the fuel pump module 1B is stably fixed to the fuel tank, the state of the strainer 71 corresponding to the stable state of the lower case 2 Can also be stabilized.

(Fifth Embodiment) FIGS. 15 and 16 show a fifth embodiment of the fuel pump module according to the present invention. FIG. 15 is a sectional view of a main part of the fuel pump module, and FIG. 16 is an enlarged sectional view showing the engaging means of FIG. The same components as those in Embodiments 1 to 4 are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 15, the fuel pump module 1C according to the fifth embodiment has a structure in which a lower strainer cover 75 integrally formed with the lower case 2 and an upper strainer cover 74 are engaged by engaging means 77. It has. A seal member 78 such as an O-ring is interposed between the upper strainer cover 74 and the lower strainer cover 75.

As shown in FIG. 15 and FIG.
The upper part 75a of the lower strainer cover 75 is provided with an engaged part 75b, and the engaging part 74b engaged with the engaged part 75b is provided at the lower end 74a of the upper strainer cover 74. is there. For example, an engagement groove is formed in the upper end portion 75a of the lower strainer cover 75, and an engagement ridge fitted in the engagement groove is formed on the upper strainer cover 74.
A means provided at the lower end 74a is also possible. Alternatively, an engaged hook is provided at the upper end portion 75a of the lower strainer cover 75, and the engaged hook fitted to the engaged hook is
Means formed at the lower end 74a of the upper strainer cover 74 are also possible. The engaging means 77 is not limited to the above-described example, and can be arbitrarily changed as long as the upper strainer cover 74 and the lower strainer cover 75 can be connected.

With this structure, the upper strainer cover 74 and the lower strainer cover 75 can be connected with one touch as compared with the fourth embodiment using welding, so that the assembling workability can be improved.

(Embodiment 6) FIG. 17 shows a fuel pump module according to Embodiment 6 of the present invention, and is a cross-sectional view of a main part of the fuel pump. The same components as those in Embodiments 1 to 5 are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 17, in a fuel pump module 1D according to the sixth embodiment, an upper case module 81 is provided by integrally molding an upper case 70 and an upper strainer cover 74 in the fourth and fifth embodiments. It has a structure in which the case module 81 is welded to the lower strainer cover 75. The upper case module 81 is made of synthetic resin similarly to the lower strainer cover 75.

After the purifying section 72 is inserted into the lower strainer cover 75, the upper case module 81 is welded to the lower strainer cover 75, so that the stability of the strainer 71 is the same as in the fourth and fifth embodiments. In addition, in the sixth embodiment, after the upper case module 81 is welded to the lower strainer cover 75, the pressure control device 8
Can be held on the lower strainer cover 75 in the same stable state as the strainer 71. That is, the strainer cover 7
The holding force for holding the pressure control device 5 and the pressure control device 8 can be improved.
It is also possible to hold the fuel pump 19 in the upper case module 81 together with the pressure control device 8. Therefore, the upper case module 81 and the lower strainer cover 7
5 can support the load of the pressure control device 8 coming off, so that the pressure control device 8 is reliably prevented from coming off. Thereby, the holding performance of the pressure control device 8 can be improved. That is, since the holding strength of the pressure control device 8 is improved, the reliability of the strength of the fuel pump module 1D is accordingly increased.

The present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the scope of the invention.

For example, the upper case 4, 70 and the lower case 4
Can be arbitrarily changed. Similarly to the configuration of the strainer 71 in the fourth to sixth embodiments, the fuel pump 19 and the pressure control device 8 can also be configured. That is, the fuel pump 19 is composed of a pump housing 62 and a pump driving unit (not shown) in the pump housing 62, and the pump housing 62 is divided into two parts, one of which is integrally formed with the lower case 2, and the other is formed in one. It is also possible to connect one and the other after inserting the pump drive.

Similarly, the pressure control device 8 is composed of a device housing (not shown) and a device main body (not shown) in the device housing. The device housing is divided into two parts and one of them is integrally formed with the lower case. However, it is also possible to connect one and the other after inserting the device body into one.

Further, in the third embodiment, a terminal connection hole (not shown) is provided in the pump housing 62, and the mating coupler 60 is formed in a male shape. And the other party coupler 6
It is also possible to electrically connect the mating coupler 60 to the fuel pump 19 by inserting 0 into the terminal connection hole and directly electrically connecting the male terminal of the mating coupler 60 to the pump drive unit.

In the present embodiment, the strainer cover is divided into two parts, but the number of divisions is not limited to this.

[0092]

According to the present invention, since the lower case is provided with the mounting portion and the upper case is provided with the pressing portion, the pressure control device can be attached to the mounting portion by mounting the upper case and the lower case. It can be clamped and fixed with the pressing part. Therefore, the number of parts of the fuel pump module can be reduced as compared with the related art. Further, by inserting the upper case into the lower case after inserting the pressure control device into the mounting portion, the pressure control device can be easily and reliably fixed between the upper case and the lower case. Since the pressure control device is pressed toward the lower case by the upper case, the holding force of the pressure control device can be improved. For this reason, the pressure control device can be reliably held against vibrations during traveling and the like.

Further, by providing an auxiliary passage between the mounting portion and each of the fuel passage and the strainer,
The mounting portion can be used as a fuel passage. By mounting the pressure control device on the mounting portion, the pressure control device can be automatically connected to the fuel passage. Therefore, the number of parts of the fuel pump module can be reduced as compared with the related art.

Further, since the longitudinal direction of the pressure control device is set substantially parallel to the direction in which the pressure control device is inserted into the mounting portion,
The space for disposing the pressure control device in the lower case can be saved. Therefore, the arrangement space of the pressure control device can be reduced as much as possible in the direction intersecting the insertion direction. This allows
The fuel pump module can be reduced in size as compared with the related art.

In addition, after the upper case and the lower case are crowned, the return fuel from the pressure control device is returned to the reservoir by arranging the return passage of the pressure control device in the lower case. Therefore, despite the provision of the reservoir, the fuel in the reservoir is not discharged out of the reservoir. That is, the fuel in the reservoir can be used without waste, and a stable supply of fuel can be realized.

Further, since the connecting cover and the upper case are integrally formed, the positioning of the connecting cover with respect to the upper case and the joining operation can be omitted. Further, by simply pushing the fuel pump and the strainer into the connection cover, respectively, the fuel pump and the strainer can be automatically connected to the communication passages of the connection cover. Therefore, the work of positioning the fuel pump and the strainer with respect to the communication passage can be eliminated. Further, since the fuel pump is fixed by the pump bottom cover, the operation of fixing the fuel pump is facilitated. In addition, the integral molding of the connection cover and the upper case makes it difficult for the fuel pump and the strainer to come off from the communication passages even by vibration of the vehicle or the like. This can provide a more reliable structure of the fuel pump module.

According to another aspect of the present invention, a terminal can be provided on a pump housing constituting a fuel pump, a coupler housing can be integrally formed on a connecting cover, and the fuel pump can be assembled on the connecting cover to form a coupler for a mating coupler. . Therefore, it is not necessary to form a coupler in the fuel pump as compared with the related art. Thus, even if the fuel pump is downsized along with the downsizing of the fuel pump module, the downsizing of the coupler can be easily and easily achieved without being restricted by the layout of the shape of the fuel pump.

Since the coupler housing is formed integrally with the coupling cover, the coupler housing can be prevented from being damaged when the coupler and the mating coupler are fitted together, as compared with a coupler housing formed compactly alone. This makes it possible to easily and reliably connect the coupler to the other coupler.

Further, since the size of the fuel pump module can be reduced, the degree of freedom in installing the fuel pump module in the fuel tank can be increased.

According to another aspect, the strainer cover of the strainer is divided into the first cover and the second cover,
A cover is integrally formed with the lower case, and a second cover is provided separately with respect to the lower case. Therefore, after inserting the purifying section into the first cover, the first cover and the second
By coupling with the cover, the stability of the strainer can be improved as compared with the related art.

Further, an upper case, which is mounted on the lower case while holding the pressure control device, and a second cover are integrally formed. Therefore, the holding force holding at least one of the fuel pump and the pressure control device can be improved by coupling the first cover and the second cover. That is, it is possible to reliably prevent at least one of the fuel pump and the pressure control device from coming off. Thereby, the reliability of holding the components in the fuel pump module can be remarkably improved.

Further, since at least one of the fuel pump and the pressure control device is held by coupling the first cover and the second cover, a separate holding member can be eliminated. As a result, the number of parts of the fuel pump module can be reduced, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a fuel pump module according to the present invention.

FIG. 2 is a front view of a lower case in FIG. 1;

FIG. 3 is a view seen from an arrow X in FIG. 1;

FIG. 4 is a view showing a state in which a connection cover is put on an upper cover in FIG. 3;

FIG. 5 is a sectional view taken along line YY of FIG. 4;

FIG. 6 is a side view showing a state where the fuel pump module of FIG. 4 is mounted in a fuel tank.

FIG. 7 is an explanatory diagram showing a fuel flow in the fuel pump module of FIG. 6;

FIG. 8 is an exploded perspective view showing Embodiment 2 of the fuel pump module according to the present invention.

FIG. 9 is an exploded view of a fuel pump module according to Embodiment 5 of the present invention.

FIG. 10 is a sectional view of a main part in FIG. 9;

FIG. 11 is a plan view of the connection cover in FIG. 9;

FIG. 12 is a cross-sectional view of a principal part showing a state where the mating coupler and the coupler in FIG. 10 are connected.

13 is a view of the assembled state of FIG. 9 as viewed from above.

FIG. 14 is a fragmentary cross-sectional view showing a fourth embodiment of a fuel pump module according to the present invention.

FIG. 15 is a fragmentary cross-sectional view showing Embodiment 5 of the fuel pump module according to the present invention.

FIG. 16 is an enlarged sectional view showing the engagement means of FIG.

FIG. 17 is a cross-sectional view illustrating a main part of a sixth embodiment of the fuel pump module according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel pump module 1 'Fuel pump module 1A Fuel pump module 1B Fuel pump module 1C Fuel pump module 1D Fuel pump module 2 Lower case 3 Mounting part 4 Upper case 5 Pressing part 6 Fuel passage 7 Auxiliary passage 8 Pressure control device 9 Strainer 9a Inlet 10 Thermistor 11 Bottom wall 12 Peripheral wall 13 Reservoir 14 Strainer mounting part 15 Discharge port 16 Thermistor mounting part 17 Fuel inlet 18 Fuel pipe 19 Fuel pump 19a Outlet 20 Pump filter 21 Top wall 22 Peripheral wall 23 Pump hole 24 Strainer hole 25 Thermistor hole 26 Protective cylinder 26a Engaged part 27 O-ring 28 O-ring 29 Device hole 31 Device body 32 First insertion part 33 Second insertion part 34 Flange 35 Return flow path 41 Connection Cover 4 Communication passage 43 Linear passage 44 Pump passage 45 Strainer passage 46 Check valve 47 O-ring 48 O-ring 49 O-ring 50 Fuel tank 53 Covered case 54 Pump bottom cover 55 Cover body 55a Long hole 55b Engagement portion 60 Mating coupler 60a Coupler housing 60b Terminal accommodating chamber 60c Terminal with electric wire 60d Lock arm 60e Operating plate 60f Engaging portion 60g Terminal fitting 60h Locking arm 61 Coupler 62 Pump housing 62a Terminal insertion hole 63 Terminal 63a Other end 64 Coupler housing 65 Counterpart Coupler insertion hole (terminal hole) 66 Connection cover main body 67 Peripheral wall 67a Engaged part 68 Wire bundle 69 Wire holding part 70 Upper case 70 'Upper wall 71 Strainer 72 Purification part 73 Strainer cover 74 Upper strike Rainer cover (second cover) 74a Lower end (end) 74b Engagement part 75 Lower strainer cover (first cover) 75a Upper end (end) 75b Engaged part 76 Inlet 77 Engaging means 78 Sealing member 80 Outlet 81 Upper case module

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02M 37/22 F02M 37/22 G

Claims (14)

[Claims] 1. A reservoir formed on an inner surface of a lower case, a fuel passage for guiding fuel in the reservoir to an engine,
A fuel pump module having a pressure control device that is held in the lower case and controls a fuel pressure in the fuel passage, and an upper case mounted on the lower case, wherein an inner surface of the lower case includes: A mounting portion provided inside the reservoir; and a pressing portion protruding from an inner surface of the upper case corresponding to the mounting portion, wherein the pressure control device is sandwiched between the mounting portion and the pressing portion. A fuel pump module, characterized in that: 2. The fuel pump module according to claim 1, wherein an auxiliary passage connecting the mounting portion, a fuel passage and a fuel purification strainer is provided. 3. The fuel pump module according to claim 1, wherein return fuel from the pressure control device held and fixed by the mounting portion and the pressing portion is returned into the reservoir. . 4. The fuel pump module according to claim 1, wherein an auxiliary passage connecting the mounting portion, a fuel passage, and a strainer for purifying fuel is respectively provided, and is held and fixed by the mounting portion and the pressing portion. A fuel pump module, wherein return fuel from the pressure control device is returned to the reservoir. 5. The fuel pump module according to claim 1, wherein a longitudinal direction of the pressure control device is substantially parallel to an insertion direction of the pressure control device into the mounting portion. A fuel pump module. 6. The fuel pump module according to claim 1, wherein a connection cover that connects each end of the fuel pump and the strainer held by the upper case and the upper case are integrally formed with the cover; A pump bottom cover for fixing the other end of the pump to the case with the cover, wherein the fuel pump and the strainer are respectively connected to a communication passage in the connection cover by pushing the fuel pump and the strainer into the connection cover, respectively. A fuel pump module. 7. The fuel pump module according to claim 6, wherein the fuel pump is provided in a pump housing, a pump driving unit driven in the pump housing, and protruded from the pump housing. A connector body integrally formed with the cover body, and a terminal hole formed in the coupler housing to insert the terminal. The fuel pump and the strainer are connected to the connection cover, and the terminal is inserted into the terminal hole to form a coupler electrically connected to a mating coupler. Fuel pump module. 8. A lower case, an upper case mounted on the lower case, a fuel pump and a fuel purification strainer held in the lower case, and holding the fuel pump and the strainer in the upper case. And a connection cover for connecting the other to the fuel pump module, wherein the fuel pump module drives the fuel pump by electrically connecting a mating coupler to the fuel pump, wherein the fuel pump includes a pump housing and the pump. A pump drive unit driven in the housing, at least one terminal provided in a protruding state on the pump housing to supply power to the pump drive unit, and a coupler housing integrally formed on the connection cover; A terminal hole formed in the coupler housing to insert the terminal, and connecting the fuel pump and the strainer to the connection cover. A fuel pump module being characterized in that as by inserting the terminal into the terminal hole to form a coupler which is connected to the counterpart coupler to. 9. The fuel pump module according to claim 7, wherein said coupler housing is provided with an engaged portion for engaging an engaging portion of said mating coupler. Fuel pump module. 10. The fuel pump module according to claim 6, wherein a hook-shaped electric wire holding portion is integrally provided on an outer surface of the connection cover. . 11. The fuel pump module according to claim 2, wherein the strainer purifies a fuel, and a strainer cover that covers an outer surface of the purifier. And the strainer cover is made of metal. 12. A lower case, an upper case mounted on the lower case, and a fuel pump disposed in the lower case.
A fuel pump module having a strainer for purifying fuel, and a pressure control device for regulating pressure of the fuel, wherein the strainer is formed of the same material as a purifying unit for purifying fuel and the lower case, and A strainer cover that covers an outer surface of the purifying unit; a first cover that is formed by dividing the strainer cover and integrally formed with the lower case; a second cover that is separate from the lower case; A fuel pump module, comprising: welding the second cover to the first cover after inserting the purifying unit into the cover; and holding at least one of the fuel pump and the pressure control device in the upper case. . 13. A lower case, an upper case mounted on the lower case, and a fuel pump disposed in the lower case.
A fuel pump module having a strainer for purifying fuel and a pressure control device for regulating the pressure of fuel, wherein the strainer includes a purifier for purifying fuel, and a strainer cover for covering an outer surface of the purifier. A first cover integrally formed on the lower case by dividing the strainer cover, and a second cover separate from the lower case, and an end of the first cover facing the second cover. Forming an engaged portion in the portion, providing an engaging portion at an end of the second cover facing the first cover, inserting the purifying portion into the first cover, A fuel pump module, wherein an engaging portion is engaged with the engaged portion, and at least one of the fuel pump and the pressure control device is held in the upper case. 14. The fuel pump module according to claim 12, wherein the upper case is formed integrally with the second cover,
A fuel pump module, wherein at least one of the fuel pump and the pressure control device is prevented from falling out of the lower case.