JP2001020817A - Fuel supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel supply system capable of long-term maintenance of proper attached state of an attaching member for a setting member, by limiting oscillation of the attaching member attached to the setting member by means of mutual connection of connecting portions. SOLUTION: This system includes a setting member 2 fixed to a fuel tank 1, and an attaching member 3 attached to the setting member 2. The setting member 2 and the attaching member 3 are provided with connecting portions 6, 10 being connectable by mutually engaging means 13, 15, and having openings 6a, 10a. There are provided oscillation-limiting means 20, 25 for limiting distortion of the connecting portions 6, 10 in the setting member 2 and/or the attaching member 3.

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 mounted mainly on a fuel tank of a vehicular internal combustion engine.

[0002]

2. Description of the Related Art An example of a conventional fuel supply apparatus will be described with reference to FIGS. As shown in a front view of FIG. 16, the fuel supply device includes a set plate 102 (corresponding to a set member referred to in the present specification) fixed to a fuel tank 101 (the figure shows a mounting portion) of an internal combustion engine for a vehicle or the like. And a case member 103 attached to the set plate 102.
(Corresponding to the attached member in this specification). The fuel supply device is obtained by modularizing a fuel filter, a fuel pump 140, a pressure regulator, and the like, and is disposed in the fuel tank 101 in units of one module.

[0003] On the lower surface of the set plate 102, there is formed an inner fitting cylindrical portion 106 (corresponding to a connecting portion in the present specification) having a cylindrical shape with an open lower surface. In addition, an outer fitting tube portion 11 which has a cylindrical shape with an upper surface opening and is externally fitted to the inner fitting tube portion 106 is provided on an upper portion of the case member 103.
0 (corresponding to a connection portion in this specification) is formed.

Next, the inner fitting tube portion 1 of the set plate 102
The connection structure of the outer fitting cylinder portion 110 of the case member 103 to 06 will be described in detail. FIG. 17 shows XVII-XVII of FIG.
As shown in the sectional view taken along the line, the outer fitting tube portion 110 and the inner fitting tube portion 10
6 is provided with an engagement means comprising an engagement projection 113 and an engagement hole 115 which engage with each other at a plurality of (four in this example) attachment positions on the circumference.

[0005] The engagement means will be described with reference to the perspective view of FIG. The engagement protrusion 113 is formed in a substantially mountain shape on the outer surface of the inner fitting tube portion 106. The engagement hole 115 is provided through the outer fitting cylinder portion 110 so that the engagement protrusion 113 can be engaged.

[0006] By the relative insertion of the inner fitting tube portion 106 with respect to the outer fitting tube portion 110, the engaging projection 113 elastically deforms the inner fitting tube portion 106 (see the two-dot chain line 106 in the sectional view of FIG. 19). ) To engage with the engagement hole 115.
As a result, the outer fitting tube 110 and the inner fitting tube 106 are connected, and the case member 103 is attached to the set plate 102 (see FIG. 16).

[0007]

In the above fuel supply device, the case member 1 attached to the set plate 102
03 may swing. For example, during transportation in the manufacturing process of the fuel supply device, at the time of mounting work of the fuel supply device on the fuel tank 101, external force and inertia applied when the vehicle runs after being mounted on the fuel tank 101, wave of fuel in the tank, and the like, Case member 1 for set plate 102
03 tries to rock. In such a case, in the above-described fuel supply device, the connecting portion, that is, the inner fitting tube portion 106 of the set plate 102 and the outer fitting tube portion 110 of the case member 103 are formed in a cylindrical shape having a predetermined thickness. So it doesn't matter much.

FIG. 20 is a cross-sectional view showing a modified example of the connecting portion formed by the inner fitting tube portion 106 and the outer fitting tube portion 110. As shown in FIG. A substantially matching opening 111 may be formed. For example, the opening 111 may be formed due to the convenience of piping related to the jet pump, wiring related to the sender gauge, and the like.

In such a case, since the respective open ends of the inner fitting tube portion 106 and / or the outer fitting tube portion 110 are easily deformed due to a decrease in rigidity, the case member 103 swings with respect to the set plate 102. Is likely to occur, and in extreme cases, the engagement protrusion 11 of the engagement means
3 is disengaged from the engagement hole 115, and the case member 10 is disengaged.
There is concern about the problem of dropping out of No. 3. This means that
In particular, when the opening width of the opening 111 is large, the inner fitting cylinder 106 and / or the outer fitting cylinder 110
Is prominent when the length in the axial direction is long and the distance from the base ends of the cylindrical portions 106 and 110 to the engagement protrusion 113 or the engagement hole 115 is long. Further, the inner fitting tube portion 106
And / or even if the outer fitting tube portion 110 has a cylindrical shape,
If the thickness is small, the same problem as described above may occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to limit the swing of an attached member attached to a set member by connecting the connecting portions to each other. Accordingly, it is an object of the present invention to provide a fuel supply device capable of maintaining a proper attachment state of an accessory member to a set member for a long term.

[0011]

According to a first aspect of the present invention, there is provided a set member fixed to a fuel tank,
A fuel supply device, comprising: an attachment member attached to the set member, wherein the set member and the attachment member each have a connection portion that can be connected to each other via an engagement means that engages with each other and has an opening. The set member and / or
Alternatively, there is provided a fuel supply device provided with a swing limiting means for limiting deformation of a connection portion of the attachment member.

According to this structure, the connecting portion of the set member and the attachment member are connected to each other through the engagement of the engagement means, so that the attachment member is attached to the set member. In this state, the deformation of the connecting portion of the set member and / or the accessory member is limited by the swing limiting means, whereby the swing of the accessory member with respect to the set member is limited. The attachment state can be maintained for a long time.

According to a second aspect of the present invention, there is provided the fuel supply device according to the first aspect, wherein the swing limiting means is provided around an opening of a connecting portion of the set member and / or the accessory member. . With this configuration, when the attached member attempts to swing around the opening of the connecting portion with respect to the set member, deformation around the opening of the connecting portion is limited by the swing limiting means. Accordingly, it is possible to effectively limit the swing of the attachment member due to the deformation around the opening of the connection portion.

According to a third aspect of the present invention, in the fuel supply device according to the first or second aspect, the swing limiting means is formed so as to limit the rotation of the accessory member about the axis with respect to the set member. is there. With this configuration, in addition to restricting the swing of the accessory member by the swing limiting means, the rotation of the accessory member about the axis with respect to the set member can also be limited. The attachment state of the member can be maintained more appropriately.

According to a fourth aspect of the present invention, the connecting portion of the set member and the connecting portion of the accessory member have an internal and external positional relationship, and the engaging means mutually engages by utilizing elastic deformation of at least one of the connecting portions. In order to disengage the engagement of the engagement means, a disassembling operation window is formed on the outer connection portion so that the inner connection portion can be deformed. The fuel supply device according to any one of claims 1 to 3, wherein: With this configuration, when the attachment member is attached to the set member, the two connection portions have an inner and outer positional relationship, and the engagement means engages with each other by utilizing the elastic deformation of at least one of the connection portions. The attachment member is attached to the set member. However, when it is necessary to disassemble the set member and the accessory member during maintenance of the fuel supply device, etc., the inner connection portion is deformed through the disassembling operation window of the outer connection portion. By doing so, the engagement of the engagement means can be easily released. Therefore, the disassembling operation of the set member and the accessory member can be easily performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. In FIG. 1 showing a front view of the fuel supply device, the fuel supply device includes a set plate 2 which is fixed to a fuel tank 1 (a mounting portion is shown in the drawing) of an internal combustion engine for a vehicle, and the like. And a fuel filter 3 attached thereto.

The fuel supply device is a module in which a fuel pump (not shown), a pressure regulator (not shown), a jet pump 4 and the like are modularized in addition to the fuel filter 3, and is mounted on the fuel tank 1 in units of one module. . The set plate 2 corresponds to a set member referred to in the present specification, and the fuel filter 3 corresponds to an attached member referred to in the present specification.

FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is an exploded front view showing the set plate 2 and the fuel filter 3, FIG. 4 is a bottom view of the set plate 2, and FIG. Is shown in FIG.

As shown in FIGS. 3 and 4, the set plate 2 is made of a resin molded product and has a disk shape that closes the mounting hole 1a (see FIG. 1) on the upper surface of the fuel tank 1. On the lower surface of the set plate 2, an inner fitting tube portion 6 having a substantially C-shaped cross section and having an opening 6 a having a lower surface opening and opening a front portion (upper portion in FIG. 4) in an axial direction (vertical direction in FIG. 3). Are integrally formed. Further, on the lower surface of the set plate 2, a cylindrical annular portion 7 having a larger diameter than the inner fitting tube portion 6 is formed. The inner fitting tube portion 6 is formed to have an axial length that is, for example, about 6 to 7 times longer than the annular portion 7. In addition, the inner fitting tube part 6 corresponds to a connection part referred to in this specification.

As is well known, the set plate 2 is integrally formed with a fuel supply pipe section, a fuel return pipe section communicating with the inside and outside of the fuel tank 1, a connector electrically connected to a motor of the fuel pump, and the like. Have been. Examples of the resin material for the set plate 2 include polyoxymethylene resin, polyphenylene sulfide resin, and polyamide resin, and examples of the resin molding method include an injection molding method.

As shown in FIGS. 3 and 5, the fuel filter 3 has a substantially C-shaped filter element (not shown) built in a cylindrical filter case 3a having a substantially D-shaped plane. The filter case 3a is formed of a resin molded product, and has a thin front wall 3b at a front portion (a lower portion in FIG. 5). The front wall portion 3b forms a recess 8 that is recessed in a substantially U-shaped plane on the outer surface of the case. Note that a fuel pump (not shown) can be incorporated in a hollow portion surrounded by the filter case 3a. 1 and 3 show a fuel inlet filter 9 mounted on the suction port of the fuel pump.

An opening 10a is formed on the outer peripheral edge of the upper surface of the filter case 3a and has an upper surface opening and a front portion (a lower portion in FIG. 5) opening in an axial direction (a vertical direction in FIG. 3).
Is formed integrally with the outer fitting tube portion 10 having a substantially C-shaped cross section. The opening 10a is continuous with the recess 8 in the axial direction (vertical direction). The outer fitting tube portion 10 can be fitted to the inner fitting tube portion 6 with the openings 6a and 10a aligned with each other (see FIG. 2). The piping of the jet pump 4 is made using the openings 6a and 10a. Note that the outer fitting tube portion 10 corresponds to a connection portion in this specification.

As is well known, the fuel filter 3 is integrally formed with a fuel inlet through which fuel from a fuel pump flows, a fuel outlet through which filtered fuel flows out, and the like. The filter case 3a is formed by, for example, the same resin material and resin forming method as the set plate 2.

Next, the inner fitting tube portion 6 of the set plate 2
The connection structure of the outer fitting cylindrical portion 10 of the filter case 3a to the filter case 3a will be described in detail. As shown in FIG. 1, the outer fitting tube portion 10 and the inner fitting tube portion 6 are engaged with the engaging projections 13 that engage with each other at a plurality of (four in this example) mounting positions on the circumference. An engaging means including the mating hole 15 is provided (FIG. 4).
And FIG. 5).

The engagement means will be described with reference to the perspective view of FIG. The engagement protrusion 13 is formed in a substantially mountain shape on the outer surface of the lower end of the inner fitting cylinder 6. The engagement protrusion 13 has a substantially square shape, and an upper end surface is formed on a substantially horizontal locking surface 13a, and an outer end surface of the engagement protrusion 13 projects from an upper end edge with respect to an outer surface of the inner fitting cylinder 6. It is formed on a flat inclined surface 13b that is gradually lowered toward the lower edge.

The engaging hole 15 is formed in the upper part of the outer fitting cylindrical portion 10 so as to penetrate in a substantially square shape in which the engaging protrusion 13 can be engaged. The engagement hole 15 is formed on a flat retaining surface 15a whose upper end face is substantially horizontal. Outer tube 10
A sliding guide surface 16 of a flat surface is formed on the inner side surface, which is inclined from the upper edge toward the inner upper edge of the engagement hole 15 so as to substantially correspond to the inclined surface 13b of the engagement protrusion 13. I have.

The inner fitting tube portion 6 with respect to the outer fitting tube portion 10
Relative to each other, the engaging protrusion 13 is
Are engaged with the engaging holes 15 by utilizing the elastic deformation of the (see the two-dot chain line 6 in the sectional view of FIG. 7). Specifically, by inserting the inner fitting tube portion 6 relative to the outer fitting tube portion 10,
When the inclined surface 13b of the engagement projection 13 comes into contact with the sliding guide surface 16 of the outer fitting tube portion 10 and slides, the inner fitting tube portion 6 is elastically deformed (see a two-dot chain line 6 in FIG. 7). Then, the engagement surface 13a (see FIG. 6) of the engagement projection 13 passes through the retaining surface 15a (see FIG. 6) of the engagement hole 15, whereby the inner fitting tube portion 6 is elastically restored, and The mating projection 13 engages with the engagement hole 15.

The fuel filter 3 is attached to the set plate 2 by connecting the outer fitting tube 10 and the inner fitting tube 6 in this manner (see FIGS. 1 and 2). At this time, when the outer fitting tube portion 10 tries to come off from the inner fitting tube portion 6, the locking surface 13a of the engaging projection 13 and the retaining surface 15a of the engaging hole 15 (see FIG. 6) come into contact with each other. By being in contact with each other, the filter case 3a is prevented from falling out of the set plate 2.

As shown in FIGS. 2, 5 and 6, the outer fitting cylinder 10 is located substantially at the center between the engagement holes 15 and is located at the upper end of the outer fitting cylinder 10. A slit-shaped disassembling operation window 18 extending downward is formed.
As shown in the cross-sectional view of FIG. 8, the window 18 is provided with a tool 19 having a strip-shaped tip from the outside of the outer fitting cylinder 10, for example, a tip of a flathead screwdriver or the like. The inner fitting cylinder 6 can be deformed by pressing the inner fitting cylinder 6 as shown by a two-dot chain line 6 in FIG.

The set plate 2 and the filter case 3a are provided with openings 6 of the inner fitting tube 6 and the outer fitting tube 10 respectively.
Left and right swing limiting means 20 and 25 for limiting the swing of the filter case 3a with respect to the set plate 2 by limiting the deformation around the a and 10a are provided (see FIG. 2).

The operation will be described starting from the left swing limiting means 20. The left swing limiting means 20 shown in FIG. 2 is provided at the left edge of the opening 6a, 10a of the inner fitting cylinder 6 and the outer fitting cylinder 10, and is provided at the end of the inner fitting cylinder 6. And an outer swing limiter 23 formed at the end of the outer fitting tube 10.

As shown in a perspective view in FIG. 9 in addition to FIG. 4, the inner swing limiting portion 21 is formed so as to be folded from the end of the inner fitting tube portion 6 and to be connected to the set plate 2. And are integrally formed. As shown in FIGS. 5 and 9, the outer swing restricting portion 23 is formed so as to be folded back from the end of the outer fitting tube portion 10 and the filter case 3a.
And is integrally formed with the upper surface of the first member. The outer swing limiter 23 is made thicker, and a flat inclined guide surface 23a that is inclined in a chamfered shape is formed at an upper inner end portion thereof.

The inner fitting tube 6 with respect to the outer fitting tube 10
, The inner swing limiting portion 21 is fitted into the outer swing limiting portion 23 (see FIG. 2). At this time,
The inner swing limiting portion 21 is fitted while being guided by the inclined guide surface 23a (see FIG. 9) of the outer swing limiting portion 23, and the connection between the outer fitting tube portion 10 and the inner fitting tube portion 6 is completed. Thereby, the fitting is completed in a state where the inner swing limiting portion 21 and the outer swing limiting portion 23 are positioned with respect to each other.

Next, the right swing limiter 25 will be described. The right swing limiting means 25 shown in FIG. 2 is provided at the right edge of the opening 6a, 10a of the inner fitting cylinder 6 and the outer fitting cylinder 10, and the end of the inner fitting cylinder 6 is provided. The outer swing limiting portion 26 is formed at the end of the outer fitting tube portion 10.

The inner swing limiter 26 is different from FIG.
As shown in the perspective view of FIG. 3, the inner fitting tube portion 6 is integrally formed so as to be folded back from the end and connected to the set plate 2. In addition, the outer swing limiter 28
As shown in FIG. 5 and FIG. 10, the filter case 3a is integrally formed at a position facing the outside of the folded end portion of the inner fitting tube portion 6 so as to be connected to the upper surface of the filter case 3a. Outer swing limiter 2
An inclined guide surface 28a of a flat surface that is inclined in a chamfered shape is formed at the upper end portion on the inner side of 8.

The inner fitting tube 6 with respect to the outer fitting tube 10
, The inner swing limiting portion 26 fits into the outer swing limiting portion 28 (see FIG. 2). At this time,
The inner swing limiting portion 26 is guided and fitted by the inclined guide surface 28a of the outer swing limiting portion 28 while being guided, and the connection between the outer fitting cylindrical portion 10 and the inner fitting cylindrical portion 6 is completed. The fitting is completed with the movement restricting portion 26 and the outer swing restricting portion 28 positioned with respect to each other.

The opening portions 6a, 1 of the inner fitting tube 6 and the outer fitting tube 10 are controlled by the left and right swing limiting means 20, 25.
At the same time as the deformation around 0a is restricted, the rotation of the fuel filter 3 about the axis with respect to the set plate 2 is restricted.

As shown in FIG. 3, a jet pump 4 is disposed at the front of the filter case 3a using a recess 8 (see FIG. 5). In addition, the jet pump 4
As is well known, is used for a fuel suction device of a fuel tank 1 in an internal combustion engine, and uses a return fuel to transfer fuel in a sub-chamber (not shown) of the fuel tank 1 to a main chamber (not shown) of the fuel tank 1. (Omitted).

Conventionally, the jet pump 4 is provided with a fuel tank 1 using a bracket, a support fitting, and the like separately from the fuel supply device.
However, there is a problem that the number of parts and the number of assembling steps are increased, resulting in an increase in cost. Therefore, focusing on the fact that the filter case 3a is a resin molded product, the jet pump 4 can be attached to the filter case 3a by a snap-fit method, thereby reducing costs.

More specifically, FIG.
As shown in FIG.
Upper and lower pump supports 30 and 35 for supporting 4b are provided. The upper pump support 30 is shown in a plan view in FIG. 11, a front view in FIG. 12, and a side view in FIG.

As shown in FIG. 11, the jet pump 4 supported by the upper pump support 30 (see FIG. 3)
The upper fitting portion 4a is formed in a substantially circular shape in a flat cross section. A pair of right and left locking claws 5 protrude from the upper fitting portion 4a. An arc-shaped R surface 5a is formed from the rear side surface to the front end surface of each locking claw 5. The front side surface 5b of each locking claw 5 is formed as a flat surface. As shown in FIG. 3, a retaining projection 4c is formed on the lower left side surface of the upper fitting portion 4a.

In FIGS. 11 to 13, the upper pump support portion 30 is elastically deformed in the expanding direction on the front wall portion 3b of the filter case 3a (see FIG. 5) (in FIG. 11, two-dot chain line 3).
1) a pair of symmetrical snap fit claws 31 projecting so-called flexibly deformable, and a receiving protrusion 33 protruding from the filter case 3a between the two snap fit claws 31. Become.

The inner surface of the distal end portion of each of the snap fit claws 31 and the distal end surface of the receiving projection 33 are formed in an arcuate surface shape substantially following the outer peripheral surface of the upper fitting portion 4a of the jet pump 4. Retaining ribs 32 protrude from the tip portions of both snap-fit claws 31, respectively. As shown in FIG. 11, in the retaining ribs 32 of both the snap fit claws 31, a tapered surface 32 a having a rear drawing shape is formed from the front surface to the inner surface.
The rear side surface of each retaining rib 32 is formed as a flat surface that can face the front side surface 5b of the locking claw 5.

The lower pump support 35 will be described with reference to the plan view of FIG. The lower fitting portion 4b of the jet pump 4 (see FIG. 3) supported by the lower pump support portion 35 is formed in a substantially circular cross section with a smaller diameter than the upper fitting portion 4a. Lower pump support 35
A pair of symmetrical snap-fit claws 36 which are elastically deformed (see a two-dot chain line 36 in FIG. 15) so as to be able to bend and deform in the direction of expansion in the filter case 3a (see FIG. 5); The filter case 3a has a receiving projection 38 which is located between the snap fit claws 36 and protrudes.

The distal ends of the snap fit claws 36 are bent inward substantially inwardly as retaining portions 37. The tip surfaces of the retaining portions 37 and the receiving projections 38 of the snap fit claws 36 are formed in an arcuate surface shape substantially following the outer peripheral surface of the lower fitting portion 4b of the jet pump 4.

When the fitting parts 4a and 4b of the jet pump 4 are supported by the upper and lower pump supporting parts 30 and 35, the fitting parts 4a are changed from the state shown by the two-dot chain line in FIGS. , 4b are pushed between the left and right snap-fit claws 31 or 36 of the respective pump supports 30, 35, respectively.

Then, in the upper pump support portion 30, the upper fitting portion 4a is pushed in after being brought into contact with the tip portions of both snap-fit claws 31, so that the tip portions of both snap-fit claws 31 are expanded. The two snap-fitting claws are deformed (see two-dot chain line 31 in FIG. 11), and furthermore, the R-faces 5a of the left and right locking claws 5 are pushed in after being brought into contact with the tapered faces 32a of the retaining ribs 32, respectively. 31 is further expanded and deformed. Then, both locking claws 5
Is passed through the retaining ribs 32, the snap-fit claws 31 are elastically restored (see FIG. 11).

As a result, the upper fitting portion 4a of the jet pump 4 is connected to the two snap fit claws 31 and the receiving projections 3.
3 and is supported in a positioned state (see the solid line state in FIG. 11). In this state, when the upper fitting portion 4a attempts to come off from the pump support portion 30, the locking claw 5 and the retaining rib 32 come into contact with each other.
The upper fitting portion 4a of the jet pump 4 is prevented from coming off. Further, the vertical movement of the upper fitting portion 4a with respect to the snap fit claw 31 is restricted by the locking claw 5 (see FIG. 11) and the retaining projection 4c (see FIG. 1),
The jet pump 4 is positioned in the vertical direction.

Further, in the lower pump support portion 35, the lower fitting portion 4b is pushed in after being brought into contact with the retaining portions 37 of the snap fit claws 36, thereby being pushed in.
Both snap fit claws 36 are expanded and deformed (see the two-dot chain line 36 in FIG. 15), and the lower fitting portion 4b is
, Both snap fit claws 36 are elastically restored (see FIG. 15).

As a result, the lower fitting portion 4 b of the jet pump 4 is secured to the retaining portions 37 of the two snap fit claws 36.
And it is supported in a state where it is positioned by the receiving projection 38 (see the solid line state in FIG. 15). In this state, when the lower fitting portion 4b tries to come off from the pump support portion 35, the lower fitting portion 4b is prevented from coming off by the retaining portions 37 of the two snap fit claws 36.

When replacing the jet pump 4 supported by the upper and lower pump supports 30, 35, the snap-fit claws 31, 36 of the pump supports 30, 35 are required.
Can be expanded against the elasticity, and the respective fitting portions 4a and 4b of the jet pump 4 can be removed.

The R surface 5a of each locking claw 5 in the upper fitting portion 4a of the jet pump 4 is, as shown in a plan sectional view in FIG. It can be replaced with a linear inclined surface 5c along a tangent line connected to the distal end surface of the locking claw 5. In this case, the upper pump support 30
When the upper fitting portion 4a is attached to the
Since c smoothly slides on the tapered surface 32a of each retaining rib 32, the work of pushing the jet pump 4 into the upper pump support portion 30 can be performed smoothly.

As shown in FIG. 1, the fuel supply device described above has the fuel filter 3 inserted into the fuel tank 1 through the mounting hole 1a and the mounting plate 1a of the fuel tank 1 closed by the set plate 2. The set plate 2 is attached to the edge of the mounting hole 1a of the fuel tank 1.
Is mounted on the fuel tank 1 by fastening with bolts (not shown) or the like.

According to the fuel supply device, the inner fitting cylinder 6 of the set plate 2 and the outer fitting cylinder 1 of the fuel filter 3
The fuel filters 3 are attached to the set plate 2 by connecting the “0” to each other through the engagement between the engagement protrusions 13 and the engagement holes 15. In this state, the deformation of the inner fitting cylinder 6 and the outer fitting cylinder 10 in the set plate 2 and the fuel filter 3 is caused by the left and right swing limiting means 2.
As a result, the swing of the fuel filter 3 with respect to the set plate 2 is limited, and as a result, the fuel filter 3 with respect to the set plate 2 is restricted.
Can be properly maintained for a long time.

Further, both swing limiting means 20 and 25 are provided around the openings 6a and 10a of the inner fitting cylinder 6 and the outer fitting cylinder 10 in the set plate 2 and the fuel filter 3. For this reason, when the fuel filter 3 attempts to oscillate with respect to the set plate 2 by deforming the vicinity of the openings 6a, 10a of the inner fitting tube portion 6 and the outer fitting tube portion 10, the inner fitting tube portion 6 and the outer Opening 6 of fitting tube 10
The deformation of the fuel filter 3 due to the deformation around the openings 6a, 10a of the inner fitting cylinder 6 and the outer fitting cylinder 10 is restricted by the deformations around the swinging limiting means 20, 25. Movement can be effectively restricted.

Further, since the both swing limiting means 20 and 25 can also limit the rotation of the fuel filter 3 about the axis with respect to the set plate 2, the both swing limiting means 20 and 25 can be limited.
In addition to limiting the swing of the fuel filter 3, the rotation of the fuel filter 3 about the axis with respect to the set plate 2 can also be limited by the use of the fuel filter 3.
Can be maintained more appropriately.

The inner fitting cylinder 6 of the set plate 2 and the outer fitting cylinder 10 of the fuel filter 3 have an inner / outer positional relationship, and the engaging projection 13 and the engaging hole 15 are formed in the inner fitting cylinder 6. The inner fitting cylinder 6 is formed on the outer fitting cylinder 10 located outside in order to release the engagement between the engagement projection 13 and the engagement hole 15. Is formed with a disassembling operation window portion 18 which allows the member to be deformed. For this reason, when the fuel filter 3 is attached to the set plate 2, the two cylindrical portions 6 and 10 have a positional relationship between the inside and the outside and the engagement protrusion 13 and the engagement hole 15 are made utilizing the elastic deformation of the inner fitting tube portion 6. Are engaged with each other, whereby the fuel filter 3 is attached to the set plate 2.

In the case where it is necessary to disassemble the set plate 2 and the fuel filter 3 for maintenance of the fuel supply device, etc., as shown in FIG. The engagement of the engagement protrusion 13 with the engagement hole 15 can be easily released by deforming the inner fitting cylinder portion 6 with a tool 19 or the like through 18. For this reason, the disassembly work of the set plate 2 and the fuel filter 3 can be easily performed.

Further, the inner swing limiting part 21 and the outer swing limiting part 23 of the left swing limiting means 20 and the inner swing limiting part 26 and the outer swing limiting part 28 of the right swing limiting means 25 are combined. By elastically fitting each, an effect of suppressing vibration between the outer fitting tube portion 10 and the inner fitting tube portion 6 can be obtained.

The present invention is not limited to the above embodiment, but can be modified without departing from the scope of the present invention. For example, the swing limiting means 20 and 25 are provided with an opening (6a) of the outer fitting cylinder 10 or the inner fitting cylinder 6 in either the set plate 2 or the fuel filter 3.
Alternatively, the deformation around 10a) may be limited.
In addition, the swing limiting means 20 and 25 limit deformation to a portion other than around the opening (6a or 10a) of the outer fitting tube portion 10 or the inner fitting tube portion 6 in either the set plate 2 or the fuel filter 3. It may be something. Further, the swing limiting means 20 and 25 only need to limit the swing of the fuel filter 3 with respect to the set plate 2, and the shape, the number, the formation position, and the like are not limited. Further, the outer fitting tube portion 10 or the inner fitting tube portion 6 can be formed in a shape other than a substantially cylindrical shape, for example, a polygonal tube shape, an elliptical tube shape, or a connecting portion having a shape other than the tube shape.

[0061]

According to the fuel supply apparatus of the present invention, the swing of the accessory attached to the set member by the connection of the connecting portions is limited by the swing limiting means, so that the proper attachment of the accessory to the set member is achieved. The attachment state can be maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a front view of a fuel supply device according to an embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an exploded front view showing a set plate and a fuel filter.

FIG. 4 is a bottom view of the set plate.

FIG. 5 is a plan view of the fuel filter.

FIG. 6 is an exploded perspective view of the engagement means.

FIG. 7 is a cross-sectional view of the engagement means.

FIG. 8 is a cross-sectional view around a window.

FIG. 9 is an exploded perspective view showing a left swing restriction unit.

FIG. 10 is an exploded perspective view showing the right swing limiter.

FIG. 11 is a plan view of the upper pump support.

FIG. 12 is a front view of the upper pump support.

FIG. 13 is a side view of the upper pump support.

FIG. 14 is a plan sectional view of an upper pump support portion according to another example of the jet pump.

FIG. 15 is a plan view showing a lower pump support portion.

FIG. 16 is a front view of a fuel supply device showing a conventional example.

FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16;

FIG. 18 is an exploded perspective view of the engagement means.

FIG. 19 is a sectional view of the engagement means.

FIG. 20 is a cross-sectional view showing a modified example of a connecting portion between the inner fitting tube portion and the outer fitting tube portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Set plate (set member) 3 Fuel filter (accessory member) 6 Inner fitting cylinder part (connection part) 6a Opening 10 Outer fitting cylinder part (connection part) 10a opening 13 Engagement protrusion (of engagement means) 15) Engagement hole (part of the engagement means) 18 Window for disassembly operation 20 Swing limiting means 25 Swing limiting means

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tomoji Taniguchi 1-1 1-1 Kyowa-cho, Obu-shi, Aichi F-term in Aisan Industry Co., Ltd. 3D038 CA04 CA15 CA20 CC06 CC13

Claims (4)

[Claims] A set member fixed to a fuel tank;
A fuel supply device, comprising: an attachment member attached to the set member, wherein the set member and the attachment member each have a connection portion that can be connected via an engagement means that engages with each other and has an opening. A fuel supply device, further comprising a swing limiting unit that limits a deformation of a connecting portion of the set member and / or the attached member. 2. The fuel supply device according to claim 1, wherein the swing limiting means is provided around an opening of a connecting portion of the set member and / or the accessory member. 3. The fuel supply device according to claim 1, wherein the swing restricting means is formed so as to restrict the rotation of the accessory member about the axis with respect to the set member. 4. The connecting portion of the set member and the connecting portion of the accessory member have an internal and external positional relationship, and the engaging means is formed so as to be mutually engageable by utilizing elastic deformation of at least one of the connecting portions. The disassembly operation window portion is formed on the outer connection portion to allow the inner connection portion to be deformed to release the engagement of the engagement means. The fuel supply device according to any one of claims 1 to 3.