JP2003074436A - Fuel supply device for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize and lighten a fuel supply device to improve the mountability to a motorcycle. SOLUTION: A lid member 1 for closing an opening part TA of a fuel tank T is made out of a resin material. A supporting member 2 having a supporting arm part 2C made out of a thin plate metallic material is integrally inserted and molded to the lid member 1, and a fuel pump P is accommodated in a pump holder 3. The pump holder 3 is detachably fitted to the supporting arm part 2C of the supporting member 2, and a strainer cup 5 is accommodated in a strainer accommodating space part L formed by a lower bottom part 1D of the lid member 1 and an upper bottom part 3C of the pump holder 3. The pump holder 3 including the fuel pump P mounted on the lid member 1 and a strainer cup 5 are mounted in the fuel tank T through the opening part TA, and the opening part TA is closed by the lid member 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device for an internal combustion engine, which boosts the fuel stored in a fuel tank by a fuel pump arranged in the fuel tank and supplies it to the engine.

[0002]

2. Description of the Related Art A conventional fuel supply device is disclosed in Japanese Patent No. 27921.
No. 81 publication. A description will be given below using the names and reference numerals of the publication, and the fuel tank 4 in which fuel is stored
The opening 40 is closed by the resin cover 6,
The cover 6 is integrally formed with a cylindrical portion 21 that projects into the fuel tank 4 through the opening 40. The fuel pump 3 is housed and arranged in a sub-tank body 11 in the fuel tank 4. The sub-tank body 11 is detachably arranged in the cylindrical portion 21 of the cover 6, whereby the fuel pump is arranged in the fuel tank 4. Will be placed. When the fuel pump 3 is energized, the fuel in the sub-tank body 11 is boosted by the fuel pump 3 and is supplied to the internal combustion engine through the discharge pipe 8 provided in the cover 6.

[0003]

According to such a conventional fuel supply device, the cover 6 having the cylindrical portion 21 is made of only a resin material, which supports the fuel pump 3 having a particularly heavy product weight. Special consideration is required for the cover 6. In addition, the fuel pump 3 causes a slight vibration from itself during its operation, and when mounted on a vehicle, the fuel pump 3 receives vibration and impact from the vehicle.
For this reason as well, it is required to increase the rigidity of the cover 6. On the other hand, in order to increase the rigidity of the cover 6 including the cylindrical portion 21, it is considered to increase the wall thickness of the cover 6 and the cylindrical portion 21 or to provide a reinforcing rib. The cover 6 tends to increase in size and weight, which is not preferable. Especially like a motorcycle,
In the case of a small fuel tank capacity, the installation and storage space of such a fuel supply device is limited,
In particular, there is a great demand for a downsized fuel supply device. Further, the tendency for the weight to increase is not preferable because it is necessary to increase the rigidity of the fuel tank when the fuel tank is made of a resin material. Although it is considered that the cover 6 and the cylindrical portion 21 are made of metal, the weight of the cover 6 and the cylindrical portion 21 is significantly increased, and it is not preferable to apply the cover 6 and the cylindrical portion 21 to a resin material tank and to adopt the motorcycle. The present invention has been made in view of the above problems, and an object of the present invention is to provide a fuel supply device that is compact and lightweight, and is excellent in mountability on a motorcycle. is there.

[0004]

In order to achieve the above object, a fuel supply device for an internal combustion engine according to the present invention includes a lid member for closing an opening of a fuel tank in which fuel is stored, and a fuel tank inside the fuel tank. In a fuel supply device including a support member that supports the arranged fuel pump toward the lid member, a lid member formed of a resin material is integrally insert-molded with a support member formed of a metal material, A first feature is that a pump holder for accommodating and supporting a fuel pump is detachably fitted and arranged on a support arm portion of a support member extending from the lid member toward the inside of the fuel tank.

According to the present invention, in addition to the first feature, the pump holder is provided with an upper bottom portion that faces a lower bottom portion of the lid member that opens into the fuel tank with a gap, and the lower bottom portion and the upper bottom portion serve as a fuel. The strainer housing space formed in the tank is provided with a strainer inside, a fuel inflow passage that is connected to the discharge passage of the fuel pump is formed at one end, and a discharge passage that opens outward from the lid member is formed at the other end. The second feature is that the strainer cup in which a continuous fuel outflow passage is formed is housed and arranged.

In addition to the second feature of the present invention, the lid member is provided with a strainer support arm portion projecting from a lower bottom portion toward the inside of the fuel tank, and the strainer cup is provided on the strainer support arm portion. The third feature is that the device is detachably arranged.

Further, in addition to the second feature of the present invention, the strainer cup is formed by an upper casing and a lower casing, and a regulator passage for communicating the inside and outside of the strainer cup is formed in the lower casing. The fourth feature is that the pressure regulator is provided and attached to the lower casing via the regulator passage.

Further, in addition to the first feature, the present invention provides
The support member is formed of a thin plate metal material, and the support member is formed of a flat plate portion arranged in the collar member and a plurality of support arm portions extending downward from the flat plate portion. In the fifth part, an opening for passing a discharge path provided in the lid member, an electric wire, and the like is provided.
It is a feature of.

Further, according to the present invention, in addition to the first feature, a filter main body provided with a filter is detachably arranged at an opening of a rear end of the pump holder, and a fuel pump is attached to the pump main body 4 by a pump holder. The sixth feature is that the storage is arranged inside.

[0010]

According to the first feature of the present invention, since the support member made of a metal material is integrally insert-molded on the cover member, the rigidity of the cover member itself can be increased. On the other hand, since the pump holder for accommodating and supporting the fuel pump is arranged on the supporting arm portion made of the metal material of the supporting member, the pump holder can be mounted on a member having high rigidity. Therefore, there is no increase in the size and weight of the lid member and the supporting arm portion,
In particular, it is possible to provide a small-sized and lightweight fuel supply device that is effective for mounting on a motorcycle.

Further, according to the second aspect of the present invention, since the strainer cup is housed and arranged in the strainer housing space formed between the lower bottom part of the lid member and the upper bottom part of the pump holder, the strainer cup You can improve the storability,
This is suitable for downsizing the fuel supply device. Further, by mounting the pump holder on the support arm portion of the lid member, the strainer cup can be stored in the strainer storage space portion, and assembling workability can be improved.

Further, according to the third aspect of the present invention, since the strainer cup is detachably arranged toward the strainer support arm portion provided on the lid member, the strainer cup can be attached to the lid member in advance. Assembling workability can be improved.

Further, according to the fourth aspect of the present invention, the pressure regulator is mounted in the regulator passage provided in the lower casing of the strainer cup, so that the mountability of the pressure regulator can be improved.

Further, according to a fifth aspect of the present invention, the support member is formed of a thin plate metal material and is formed of a flat plate portion having an opening and a support arm portion. Since the flat plate portion is insert-molded in the lid member, the rigidity of the lid member can be enhanced, and the discharge passage and the electric wiring provided in the lid member can be formed by the opening without any trouble. Further, since the support arm portion is formed of a thin plate material, it can have sufficient rigidity to support the pump holder and can suppress an increase in weight.

Further, according to the sixth aspect of the present invention, the fuel pump arranged in the pump holder is housed in the pump holder by being locked by the filter member having the filter. Therefore, it is not necessary to prepare a special locking member, and the manufacturing cost can be reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fuel supply system for an internal combustion engine according to the present invention will be described below with reference to the drawings. 1 is a vertical cross-sectional view of a main part of the fuel supply device, and FIG. 2 is a vertical cross-sectional view of the main part taken along line XX of FIG. T is a fuel tank formed of, for example, a resin material, and an opening TA for inserting a fuel supply device, which will be described later, into the fuel tank T is opened and formed on the upper side surface thereof. Reference numeral 1 denotes a brim-shaped lid member for closing the opening TA of the fuel tank T. For example, nylon resin P
A, a resin material such as polyacetal resin (POM). This lid member 1 is arranged on the upper side surface of the fuel tank T via a packing R, and the opening TA is hermetically closed by this. Further, the lid member 1 connects the inside and the outside of the fuel tank T. The discharge passage 1A and the connector terminals 1B and 1C are formed,
The outer opening of the discharge passage 1A is connected to a fuel distribution pipe (not shown). The connector terminal 1B facing the inside of the fuel tank T is connected to a connector terminal of an electric component such as a fuel pump described later through a lead wire, and the connector terminal 1C facing the outside of the fuel tank T is connected to a power source (not shown). It 2 is a thin metal material such as an iron plate or a stainless steel plate (for example, a plate thickness of 1.5 m
m) is a support member formed by the following. Figure 3
4 is a top plan view of the support member 2, FIG. 4 is a vertical sectional view taken along line YY of FIG. 3, and FIG. 5 is a vertical sectional view taken along line ZZ of FIG. Explaining with reference to the drawings, 2A is a flat plate portion formed on the upper side in the drawing, and the flat shape of the flat plate portion 2A is a shape that can be arranged in the lid member 1. Also, the flat plate portion 2A
The opening 2B which does not interfere with the discharge passage 1A and the connector terminals 1B and 1C formed in the lid member 1 is formed through the hole, and the flat plate portion 2A is formed into an annular shape by the opening 2B. Eggplant Reference numeral 2C denotes a support arm portion bent downward from the outside of the flat plate portion 2A. A plurality of support arm portions 2C are provided and the support arm portions 2C are provided inside the opening TA of the fuel tank T. Make a shape that is located. In this embodiment, a pair of support arm portions 2C are provided so as to face each other. Then, a rectangular engaging groove 2D is formed in each of the support arms 2C. Returning to the lid member 1 again, the lower bottom portion 1D of the lid member 1 which faces the fuel tank T will be described.
A strainer support arm portion 1E surrounding the discharge passage 1A is formed on the inner wall of the strainer support arm portion 1E so as to project downward. The strainer support arm portion 1E may be a tubular portion, a hollow cylindrical portion facing each other, or a simple plate shape. Further, each strainer support arm portion 1E is provided with a rectangular engaging groove 1F. To be done.

The lid member 1 described above is formed by injection molding a resin material, and at this time, the support member 2 is insert molded at the same time. According to the above, the flat plate portion 2A of the support member 2 is integrally molded with and surrounded by the lid member 1,
The support arm portion 2C is erected downward from the lower bottom portion 1D of the lid member 1. In the above-mentioned molding, since the flat plate portion 2A of the support member 2 is provided with the opening 2B, the formation of the discharge passage 1A of the lid member 1 and the connector terminals 1B and 1C is not hindered. Further, the strainer support arm portion 1E formed at the same time as the lid member 1 is formed inside the support arm portion 2C of the support member 2. Further, since the annular flat plate portion 2A of the support member 2 (which is annular due to the opening 2B formed in the flat plate portion 2A) is insert-molded over substantially the entire circumferential range of the flange-shaped portion of the lid member 1. The support member 2 can be firmly fixed to the lid member 1.

Next, the pump holder 3 for containing and holding the fuel pump P will be described. 1, the pump holder 3 has a pump housing tubular portion 3B having a pump housing hole 3A opening diagonally downward to the right, and an upper bottom portion located diagonally above the pump housing tubular portion 3B and facing the lower bottom portion 1D of the lid member 1. Three
C and a mounting arm portion 3D protruding upward from the upper bottom portion 3C. More specifically, the first flow passage 3F and the first through hole 3G are formed from the left bottom portion 3E of the pump storage hole 3A toward the left, and the left end of the first flow passage 3F is upward. The second flow path 3 opening on the bottom portion 3C
Open in line with G. Further, the left end of the first through hole 3G opens toward the outside. On the other hand, a plurality of rectangular engaging grooves 3J are formed through the vicinity of the open end 3H (right end in FIG. 1) of the pump housing tubular portion 3B. Mounting arm 3
D is a member that faces the support arm portion 2C so as to extend along the inner surface of the support arm portion 2C of the support member 2 and that protrudes upward from the upper bottom portion 3C. In this example, a pair of support members face each other. The arm 2C is formed. (In FIG. 1, the support arm portion 2C and the mounting arm portion 3D on one side are shown.) Further, on the outer surface of the mounting arm portion 3D, a locking claw that is locked in the engaging groove 2D of the support arm portion 2C. Part 3K is provided.

Reference numeral 4 denotes a filter body inserted and arranged toward the pump housing hole 3A, and an engaging claw portion 4A which is engaged with the engaging groove 3J of the pump holder 3 is formed on the outer periphery of the filter body 4. 4C is a filter channel formed in the filter body 4, the opening on the left side thereof opens on the left end surface 4B of the filter body 4, and the filter F is mounted on the opening on the right side.

Numeral 5 is a cylindrical strainer cup for accommodating the strainer S therein, and comprises the following. The strainer cup 5 is formed in a projecting shape by joining the upper casing 5A and the lower casing 5B, and the fuel outflow passage 5C is opened at the upper portion of the upper casing 5A and the outer periphery of the upper casing 5A is formed. A locking claw portion 5D that is locked in the engagement groove 1F of the strainer support arm portion 1E is formed in the. Further, a regulator passage 5E is opened at the bottom of the lower housing 5B, and a fuel inflow passage 5F is formed.
Opens. (The regulator passage 5E is well shown in FIG. 2.) The strainer S has a cylindrical shape, a filter member SA made of filter paper or the like is wound around the strainer S, and a strainer flow path SB is opened below. (The strainer channel SB is inward of the filtering member SA, and the upper portion of the strainer channel SB is the filtering member SA.
The inside opens and the lower part opens toward the outside. The strainer S is positioned and arranged in the strainer cup 5, and at this time, the strainer passage SB is connected to the fuel inflow passage 5F of the strainer cup 5. According to the above,
An annular filter chamber 6 is formed by the inside of the strainer cup 5 and the outside of the strainer S.
The C and the regulator passage 5E are opened inside the filtration chamber 6.

Then, the above-mentioned components are assembled as follows to form a fuel supply device. First, the fuel pump P is attached to the pump holder 3. Pump storage hole 3A
The fuel pump P is inserted and arranged in the pump housing hole 3A from the opening end 3H on the right side of the filter body 4, and then the filter body 4 is inserted and arranged from the opening end 3H of the pump housing hole 3A. 4A is fitted and locked in the engagement groove 3J of the pump holder 3. According to the above, the fuel pump P is sandwiched between the left end portion 3E of the pump housing hole 3A and the left end surface 4B of the filter body 4 and fixedly arranged in the pump housing hole 3A. In this state, the discharge passage PA of the fuel pump protruding from the left side of the fuel pump P is liquid-tightly inserted into the right side of the first flow path 3F of the pump holder 3. On the other hand, the flow path PB of the fuel pump P is inserted and communicated with the filter flow path 4C on the left side. Further, the connector terminal PC protruding from the left side of the fuel pump P protrudes outside the pump holder 3 through the first through hole 3G. As described above, the fuel pump P including the filter F is attached to the pump holder 3.

Secondly, the strainer cup 5 having the strainer S is assembled to the lid member 1. A known pressure regulator R is mounted in advance on the strainer cup 5, and the regulator inflow passage RA of the pressure regulator R is inserted into the regulator passage 5E of the strainer cup 5 and mounted. (This is well shown in FIG. 2) Then, the strainer cup 5 including the pressure regulator and the strainer S is inserted and arranged from the lower opening of the strainer support arm portion 1E toward the lower bottom portion 5D of the lid member 1, At this time, the locking claw portion 5D provided on the upper casing 5A is connected to the engagement groove 1 of the strainer support arm portion 1E.
Fit to F and lock. According to the above, the strainer cup 5 is fixedly arranged on the strainer support arm portion 1E of the lid member 1, and at this time, the fuel outflow passage 5 provided in the upper casing 5A.
The discharge passage 1A provided in the lid member 1 is inserted into C and connected and arranged. Therefore, the lower portion of the discharge passage 1A of the lid member 1 is connected to the inside of the filtration chamber 6 of the strainer cup 5 and opens.

Third, a pump holder 3 having a filter F and a fuel pump P, a pressure regulator R,
The lid member 1 including the strainer cup 5 (including the strainer S) is assembled. This is the pump holder 3
The mounting arm portion 3D is placed in contact with the supporting arm portion 2C of the lid member 1, and at this time, the locking claw portion 3K provided on the mounting arm portion 3D is fitted into the engaging groove 2D of the supporting arm portion 2C. Lock together. According to the above, the lid member 1 and the pump holder 3 are arranged so as to be coupled, and at this time, the strainer cup 5 is arranged between the lower bottom portion 1D of the lid member 1, the upper bottom portion 3C of the pump holder 3 and the mounting arm portion 3D. Is arranged in the strainer housing space L formed in the above. More specifically, the upper portion of the strainer cup 5 is arranged in contact with the lower bottom portion 1D of the lid member 1, and the lower portion of the strainer cup 5 is arranged in the pump holder 3. It is disposed in contact with the upper bottom portion 3C. On the other hand, in this state, the fuel inflow passage 5F projecting downward from the strainer cup 5 is inserted into the second flow passage 3G of the pump holder 3 and communicates with it. Further, in such a state, the connector terminal PC of the fuel pump P and the connector terminal 1B provided on the lid member 1 are electrically connected by a lead wire or the like (lead wire is not shown), and thus the fuel supply device is assembled. Upon completion, the fuel supply device is inserted and arranged in the fuel tank T through the opening TA of the fuel tank T, and then the flange portion of the lid member 1 is screwed on the upper side surface of the fuel tank T in FIG. It is fixedly arranged by the fixing means.

According to the above fuel supply device, when electricity is supplied to the fuel pump P from the power source (not shown) through the connector terminals 1C and 1B, the lead wire, and the connector terminal PC, the pump portion of the fuel pump P is operated. The fuel in the fuel tank T is driven and is sucked into the pump portion through the filter F, the filter passage 4C, and the inflow passage PB of the fuel pump P.
The fuel whose pressure has been increased by the pump unit is supplied into the strainer S through the discharge passage PA of the fuel pump P, the first passage 3F, the second passage 3G, the fuel inflow passage 5F, and the strainer passage SB, and is filtered. Clean fuel from which foreign matter has been removed by the member SD is supplied into the filtration chamber 6. Then, a part of the fuel in the filtration chamber 6 is introduced into the pressure regulator R via the regulator passage 5E and the regulator inflow passage RA, and the pressure in the filtration chamber 6 becomes constant due to the pressure regulating action of the pressure regulator R (fuel pressure ( For example 250K
The pressure is adjusted to Pa). The fuel having a constant fuel pressure in the filtration chamber 6 is discharged to the outside through the discharge passage 1A, and is supplied to, for example, the fuel distribution pipe and injected into the intake pipe connected to the engine through the fuel injection valve. Supplied.

According to the fuel supply apparatus of the present invention as described above, the support member 2 made of a metal material is integrally insert-molded on the lid member 1 made of a resin material.
In the fuel supply device, the pump holder 3 for accommodating the fuel pump P is fitted and arranged in the support arm portion 2C formed in
Since the heavy fuel pump P is supported by the supporting arm portion 2C of the supporting member 2 made of a metal material having high rigidity, the wall thickness of the lid member 1 is increased or reinforced in order to increase the rigidity of the lid member 1. It is possible to obtain a small-sized and lightweight fuel supply device by eliminating the need to provide ribs and the like, and by this, it is possible to provide the above-mentioned device that is particularly suitable for mounting on a motorcycle. Further, the pump holder 3 for accommodating and holding the fuel pump P is attached to the support arm 2 made of a metal material.
Since the fuel pump P is fixedly supported, the fuel pump P can be stably supported with sufficient supporting strength even if the fuel pump P itself receives vibrations and vibrations from the engine.

Further, since the supporting member 2 is made of a thin plate metal material, the weight increase is very small, and the flat plate portion 2A of the supporting member 2 is insert-molded on the lid member 1 with a wide contact area. The support member 2 can be firmly fixed to the lid member 1. Further, since the flat plate portion 2A is provided with the opening 2B, the discharge passage 1A and the connector terminals 1B and 1C can be formed without any trouble when the lid member 1 is molded. Further, the support member 2 including the flat plate portion 2A having the opening 2B and the support arm portion 2C having the engaging groove 2D can be easily manufactured by press molding.

The strainer cup 5 in which the strainer S is housed is arranged in the strainer housing space L formed between the lower bottom portion 1D of the lid member 1 and the upper bottom portion 3C of the pump holder 3, and the pump is installed. The strainer S is installed in the space L by fitting the holder 3 into the lid member 1.
Since the strainer cup 5 is arranged in the projection surface of the lid member 1 and there is no need to newly provide a special storage space, the storage property of the strainer cup 5 can be improved and the fuel supply device can be provided. It is suitable for small size. Further, by fitting the pump holder 3 to the lid member 1, the fuel inflow path 5F of the strainer cup 5 can be connected to the second flow path 3G of the pump holder 3, and the discharge path PA of the fuel pump P and the strainer S can be connected. Can be connected,
It is possible to easily perform the connecting work without requiring a special new connecting member for connecting the flow paths.

Further, the strainer cup 5 has its locking claw portion 5
By fitting D into the engaging groove 2D of the support arm portion 2C of the lid member 1, the lid member 1 can be attached, and the fuel outflow passage 5C can be connected to the discharge passage 1A by a strainer. The cup 5 can be sub-assembled to the lid member 1 in advance, and the assembling workability can be particularly improved. Further, at the time of maintenance work of the strainer cup 5, by releasing the fitting between the locking claw portion 5D of the strainer cup 5 and the engaging groove 2D of the support arm portion 2C, the strainer cup 5 is very easily covered. Since it can be detached from No. 1, the maintenance workability can be improved.

Further, since the pressure regulator R is attached to the regulator passage 5E provided in the lower casing 5B of the strainer cup 5 through the regulator inflow passage RF of the pressure regulator R, a new component for connecting the flow passage is provided. Is not necessary, and is effective in improving the assemblability and reducing the manufacturing cost. Incidentally, when the locking portion 3L provided on the pump holder 3 is brought into contact with the flange portion RB provided on the outer periphery of the pressure regulator R, when the pump holder 3 is fitted to the lid member 1, the pressure regulator R is prevented from coming off. To be done.

Further, the filter body 4 having the filter F is fitted and arranged in the pump holder 3, and the fuel pump P is sandwiched in the pump holder 3 by the left end portion 3E and the left end surface 4B of the filter body 4. According to this, it is not necessary to prepare a new attachment member for fixedly supporting the fuel pump P, and the filter body 4 and the pump holder 3 are detachably arranged by the engaging claw portion 4A and the engaging groove 3J. Therefore, an increase in the number of parts and an increase in the number of assembly work steps are suppressed, and a reduction in manufacturing cost can be achieved.
Further, when the filter body 4 is attached, the filter flow path 4C can be directly connected to the inflow path PB of the fuel pump P, which is also effective in reducing the manufacturing cost.

[0031]

As described above, according to the fuel supply device for an internal combustion engine of the present invention, the lid member is made of the resin material, and the lid member is made of the metal material and provided with the supporting arm portion. Since the pump holder, which is integrally insert-molded and houses the fuel pump, is detachably fitted to the support arm, a small and lightweight fuel supply device can be obtained, which is particularly suitable for mounting on a motorcycle. is there.
Further, since the pump holder is mounted on the supporting arm made of a metal material, it can be stably held with sufficient supporting strength, and is particularly suitable as a device for a two-wheeled vehicle which has a severe vibration condition as compared with an automobile. Further, by disposing the strainer cup provided with the internal strainer in the strainer storage space formed between the lower bottom portion of the lid member and the upper bottom portion of the pump holder, the strainer cup can be disposed within the projection surface of the lid member, It is possible to provide a small-sized fuel supply device that can improve the storage capacity of the strainer cup, and can directly connect the fuel inflow path of the strainer cup to the second flow path of the pump holder. The connection can be easily made without preparing. Further, by disposing the strainer cup on the strainer support arm portion of the lid member in a detachable manner, the strainer cup can be sub-assembled to the lid member, which can improve the assembly workability and the maintenance workability of the strainer cup. Further, by directly mounting the regulator passage of the pressure regulator in the regulator passage provided in the lower casing of the strainer cup, the number of parts can be reduced and the assemblability can be improved, and the manufacturing cost thereof can be reduced. Further, since the supporting member including the flat plate portion and the supporting arm portion is formed of the thin plate metal material, the supporting member can be firmly fixed to the lid member and the pump holder can be held with sufficient rigidity. It is possible to provide a small-sized and lightweight fuel supply device in which the increase in weight and the increase in weight are suppressed. Furthermore, according to the fact that the fuel pump is housed and arranged in the pump holder by the filter body,
No new attachment member is required, and the assembly can be completed by attaching the filter body to the pump holder, which is effective in reducing the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of a fuel supply device for an internal combustion engine according to the present invention.

FIG. 2 is a longitudinal sectional view of a main part taken along line XX of FIG.

FIG. 3 is a top plan view of the support member used in FIG.

FIG. 4 is a vertical cross-sectional view taken along line YY of FIG.

5 is a vertical cross-sectional view taken along line ZZ of FIG.

[Explanation of symbols]

1 Lid member 1A discharge path 1D lower bottom 2 Support members 2A flat plate 2B opening 2C support arm 3 pump holder 3C upper bottom 4 Filter body 5 strainer cups 5A Upper case 5B lower housing 5E Regulator passage P fuel pump R Pressure Regulator S strainer T fuel tank TA opening

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) F02M 37/00 F02M 69/00 340T 69/00 340 B60K 15/02 M (72) Inventor Toshihiko Naito Kakuda, Kakuda, Miyagi Prefecture Character Flow 197-1 F-Term in Keihin Kakuda Development Center Co., Ltd. (reference) 3D038 CA04 CA11 CB00 CC06 CC07

Claims (6)

[Claims] 1. A fuel supply device comprising: a lid member that closes an opening of a fuel tank in which fuel is stored; and a support member that supports a fuel pump arranged in the fuel tank toward the lid member. In the above, the lid member 1 made of a resin material is integrally insert-molded with the support member 2 made of a metal material, and the lid member 1 is used to form the fuel tank T.
A fuel supply device for an internal combustion engine, wherein a pump arm 3 for accommodating and supporting a fuel pump P is detachably fitted and arranged on a support arm portion 2C of a support member 2 extending inward. 2. The pump holder is provided with an upper bottom portion 3C that faces a lower bottom portion 1D of the lid member 1 that opens into the fuel tank T with a gap, and is formed in the fuel tank T by the lower bottom portion 1D and the upper bottom portion 3C. In the strainer housing space L, the strainer S is provided inside, and the fuel inflow passage 5F connected to the discharge passage PA of the fuel pump P is formed at one end, and the discharge passage opened outward from the lid member 1 at the other end. A strainer cup 5 in which a fuel outflow passage 5C connected to 1A is formed
The fuel supply apparatus for an internal combustion engine according to claim 1, wherein the fuel supply apparatus is housed and arranged. 3. The strainer support arm portion 1E protruding from the lower bottom portion 1D toward the inside of the fuel tank T on the lid member.
3. The fuel supply device for an internal combustion engine according to claim 2, wherein the strainer cup 5 is detachably disposed toward the strainer support arm portion 1E. 4. The strainer cup includes an upper casing 5A.
And the lower casing 5B, and the lower casing 5B communicates the inside and outside of the strainer cup 5 with the regulator passage 5
3. The fuel supply device for an internal combustion engine according to claim 2, wherein E is provided and the pressure regulator R is attached to the lower casing 5B through the regulator passage 5E. 5. The support member is formed of a thin plate metal material, and the support member 2 includes a flat plate portion 2A arranged in the collar member 1 and a plurality of support arms extending downward from the flat plate portion 2A. 2C, and the flat plate portion further includes a discharge passage 1A and an electric wiring 1 provided on the lid member.
2. The fuel supply device for an internal combustion engine according to claim 1, further comprising an opening 2B for passing B, 1C and the like. 6. A filter body (4) having a filter (F) is detachably arranged in an opening portion at a rear end of the pump holder, and a fuel pump (P) is housed in the pump holder (3) by the filter body (4). The fuel supply system for an internal combustion engine according to claim 1.