JPH1182210A - In-tank type fuel filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of production by curtailing an upper end plate for securing the upper end of a filter body in this in-tank type fuel filter, and also to prevent any unfiltered fuel from getting into the side of a delivery pipe from a weld part between the upper end plate and a cover body, and besides, to obviate such a possibility that burr of the weld part might be dropped and fed to the side of an engine. SOLUTION: In this in-tank type fuel filter, being installed upon storing a filtering body 5 in a filtrating chamber 4 partitioned off by a container 2 and a cover body 3, and having a pleated filtering member 9 of the filter body 5 and a plate 8 holding this filtering member 9, this plate 8 is installed separately from the cover body 3 and the upper end is attached to this cover body 3, and the lower end is secured tight to an end plate 10, while an upper end of the filtering member 9 is attached tight to the cover body 3 and the lower end is installed tight in the end plate 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine which is immersed and installed in a fuel tank, sends fuel from a fuel pump also arranged in the fuel tank, and sends filtered fuel to the engine side. The present invention relates to a tank type fuel filter.

[0002]

2. Description of the Related Art Generally, an in-tank type fuel filter is provided such that a filter is accommodated in a filtration chamber defined by a container and a lid.

As an in-tank type fuel filter, a filter proposed by the present applicant will be described as an example with reference to FIGS.

[0004] This in-tank type fuel filter 1
As shown in FIG. 14, 01 is disposed on the outer periphery of the cylindrical casing of the fuel pump 117 built in the fuel tank 116, and has a U-shaped cross section.

[0005] This in-tank type fuel filter 1
Reference numeral 01 accommodates a filter 105 in a filtration chamber 104 defined by a container 102 and a lid 103. Lid 10
3 is provided with a feed pipe 106 and a feed pipe 107.

Here, the filter body 105 is composed of a plate 108 formed along one of the inner and outer walls of the container 102 and a pleated filter member 109 held by the plate 108. Have. Filter body 105 including this plate 108 and filter member 109
The upper end has an upper end plate 118 and the lower end has a lower end plate 11.
It is fixed to 0.

The plate 108 is formed by plastically deforming a thin metal plate by pressing or the like.
3 is attached.

As shown in FIGS. 14 and 15, the upper end plate 118 is provided with a filtered fuel delivery pipe 11 for delivering filtered fuel.
9 are provided. The upper end plate 118 is welded to the lid 103. That is, at the point where the filtered fuel delivery pipe 119 of the upper end plate 118 and the delivery pipe 107 of the lid 103 are directly connected (welded portion 120), the upper end plate 118 and the lid 1 are connected.
03 is welded.

The lower end of the plate 108 is formed straight, and is fixed to the lower end plate 110 by bonding.

The plate 108 made of a thin metal plate is shown in FIG.
As shown in FIG. 6 and FIG. 17, both ends in the circumferential direction are bent so that both ends of the filtering member 109 are caulked and held.

Also, as shown in FIG.
8 is provided with a filtering member only on one side (outside).

Further, the filtered fuel delivery pipe 119 extending into the filtration chamber 104 is formed as a substantially cylindrical one.

[0013]

[Problems to be solved by the invention]

The fuel filter 101 has the following problems.

(1) Filtration member 109 and plate 10
8 is fixed to the upper end plate 118 at the upper end thereof. According to this, the number of components is increased by the amount required for the upper end plate 118, the number of assembling steps is increased, and this causes a rise in the manufacturing cost of the fuel filter 101.

Further, the filtered fuel delivery pipe 1 of the upper end plate 118
The upper end plate 118 and the lid 103 are welded to each other at a position (welding portion 120) where the outlet pipe 19 of the lid 103 is directly connected to the delivery pipe 107. If the sealing property of the welded portion 120 is incomplete, the unfiltered fuel in the filtration chamber 104 may enter the delivery pipe 107 and be sent toward the engine.

Further, a burr 121 formed on the inner peripheral side of the welded portion 120 between the filtered fuel delivery pipe 119 and the delivery pipe 107 is provided.
(See FIG. 15) may fall off and be sent to the engine side together with the fuel flowing through the delivery pipe 107.

(2) Since the lower end plate 110 separate from the plate 108 is attached to the plate 108, the number of assembling steps increases accordingly, leading to an increase in the manufacturing cost of the fuel filter 101.

(3) A lower end plate 110 is provided to fix the lower end of the filter member 109. The manufacturing cost is increased by the amount required for the lower end plate 110.

(4) The lower end plate 110 is
And is adhered to the lower end of the plate 108. However, when the holding force is not sufficient, there is a possibility that the vehicle may fall off due to the influence of vibration of the vehicle or the like.

(5) Both ends of the plate 108 made of a thin metal plate in the circumferential direction are bent to hold both ends of the filter member 109 by caulking (see FIG. 17). However, there is a possibility that the filter member is shifted from the swaged portion of the plate 108 in the x direction in FIG. If the filter member 109 is displaced and a gap is formed between the filter 108 and the plate 108, unfiltered fuel may enter from the gap and pass through the delivery pipe 107 to be sent to the engine.

On the other hand, if another member is provided in order to prevent the displacement of the filtering member 109, the number of parts increases,
This leads to an increase in the number of assembling steps, and the fuel filter 101
Manufacturing costs will increase.

(6) The filtering member 109 is provided only on one side (outside) of the plate 108. Therefore, the area of the filtering member 109 is limited, which limits the filtering performance.

(7) The filtered fuel delivery pipe 119 is connected to the filtration chamber 1
The portion that extends into the inside 04 is formed as a substantially cylindrical one. Therefore, as shown in FIG. 15, an air pool 125 is formed near the upper part of the filtering member 109 in the filtering chamber 104. Reference numeral 126 indicates a free liquid level of the fuel.

When the fuel flows into the filtration chamber 104 due to the presence of the air reservoir 125, the fuel and the filter member 1
09 constantly rubs against the surface, thereby increasing the amount of static electricity generated as shown in FIG. Also, the free fuel level 126 of the fuel
Is always up and down and unstable, so that the generated static electricity becomes unstable with waves.

Further, if there is the air reservoir 125, the upper portion of the filtering member 109 does not perform the filtering action, so that the entire area of the filtering member 109 cannot be used, and the life is shortened.

The present invention has been made to solve the above-described problems in the fuel filter. In addition,
As a prior art, a fuel filter having a U-shaped cross section has been described above as an example. However, the present invention is not limited to this, and can be generally applied to an in-tank type fuel filter installed in a fuel tank. .

A first object of the present invention is to reduce the number of parts and the number of assembling steps by reducing the number of upper end plates, thereby reducing the manufacturing cost of the fuel filter, and reducing the cost of the fuel cell. Provided is an in-tank type fuel filter in which unfiltered fuel is prevented from entering a delivery pipe from a welded portion with a plate, and furthermore, burrs in the welded portion are prevented from being sent to an engine side together with fuel flowing through the delivery pipe. Is to do.

A second object of the present invention is to provide an in-tank type fuel filter in which a manufacturing cost is reduced by reducing a process of attaching an end plate to a plate.

Further, a third object of the present invention is to provide an in-tank type fuel filter which can reduce the manufacturing cost by enabling the end plate for fixing the lower end of the filter member to be reduced.

A fourth object of the present invention is to prevent the end plate from falling off and to increase the holding force between the plate and the filtering member by increasing the holding force between the plate and the end plate, and between the plate and the filtering member. An in-tank type fuel filter is provided.

A fifth object of the present invention is to provide an in-tank type fuel filter in which a deviation of a filter member from a plate is prevented without using another member.

A sixth object of the present invention is to provide an in-tank type fuel filter in which the filtration performance is improved by increasing the area of the filtration member.

A seventh object of the present invention is to reduce the amount of static electricity generated by minimizing friction between the fuel and the filter member by preventing air from being trapped near the upper portion of the filter member in the filter chamber. It is an object of the present invention to provide an in-tank type fuel filter which reduces the generated static electricity and stabilizes the generated static electricity without waves.

[0035]

In order to achieve the above-mentioned object, the present invention is configured as follows.

(1) In order to achieve the first object, in the present invention, the plate is provided separately from the lid, the upper end is attached to the lid, the lower end is fixed to the end plate, and the filtering member is the upper end. Is fixed to the lid and the lower end is fixed to the end plate. In another aspect of the present invention, the plate is formed integrally with the lid and the lower end is fixed to the end plate, and the filtering member is provided with the upper end fixed to the lid and the lower end fixed to the end plate.

(2) In order to achieve the second object,
In the present invention, the end plate is formed integrally with the plate.

(3) In order to achieve the third object,
In the present invention, the lower end of the filtering member is solidified by the adhesive.

(4) In order to achieve the fourth object,
In the present invention, the plate is integrally formed with a projection at the lower end in the direction of the filtering member.

(5) In order to achieve the fifth object,
In the present invention, the plate is provided with a bent piece provided at the end in the circumferential direction on the filter member side so as to be able to bend to the filter member side, and a projection for sandwiching the filter member together with the bent piece. In another aspect of the present invention, the plate and the filter member are joined by vibration welding.

(6) In order to achieve the sixth object,
In the present invention, the filter member is provided so as to make a round in the filter chamber.

(7) In order to achieve the seventh object,
In the present invention, the notch is formed in the delivery pipe from a lower end of a portion extending into the filtration chamber to a height substantially equal to an upper end position of the filtration member.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS. 1 to 13 and FIG.

FIG. 1 shows an embodiment of a fuel filter according to the present invention.

The fuel filter 1 has a U-shaped cross section, and is arranged on the outer periphery of a cylindrical casing of a fuel pump incorporated in a fuel tank.

The fuel filter 1 includes a container 2 having a U-shaped cross section, a lid 3 for partitioning a filtration chamber 4 together with the container 2, a filter 5 housed in the filtration chamber 4, A passage 6 and a delivery pipe 7 are provided.

Here, the filter 5 includes a plate (protector) 8 formed along one of the inner and outer walls (the inner wall 2A and the outer wall 2B) of the container 2 (the inner wall 2A in this example). A filter member (filter paper) 9 held by the plate 8 and folded in a pleated shape.

The delivery pipe 7 is provided on the lid 3. The inlet passage 6 is provided to supply unfiltered fuel discharged from the fuel pump to the filtration chamber 4. The delivery pipe 7 is provided so as to deliver the filtered fuel from the filtration chamber 4 toward the engine.

In the present embodiment, the plate 8 and the filter member 9 constituting the filter 5 are fixed at the upper end thereof to the lid 3 with an adhesive (see FIGS. 1 and 2) and at the lower end. It is provided by being fixed to the plate 10 by bonding with an adhesive. Reference numeral 17 </ b> A indicates an adhesive layer in which the filter member 9 and the lid 3 are bonded. Reference numeral 17B denotes an adhesive layer that bonds the filter member 9 and the end plate 10.

That is, the upper end of the filter body 5 including the filter member 9 and the plate 8 is fixed to the lid 3.
According to this, compared to the prior art in which the upper end plate to which the upper end of the filter is fixed is welded to the lid (see FIGS. 14 and 15),
Since the upper end plate is not required, the number of parts is reduced. Further, in the prior art, if the sealing performance at the welded portion between the upper end plate and the lid is poor, unfiltered fuel may leak into the delivery pipe. In the present invention, there is no fear that such unfiltered fuel leaks to the delivery pipe. Furthermore, according to the prior art, there is a concern that burrs generated when the upper end plate is welded to the lid may fall off and be delivered to the engine through the delivery pipe, but according to the present invention, There is no such thing.

The resin plate 8 has a structure shown in FIG.
A holding structure for the filtering member 9 is provided as exemplified in (B). That is, the resin plate 8 is provided with a bent piece 12 provided at the end in the circumferential direction so as to be bendable, and the end of the filter member 9 together with the bent piece 12 is sandwiched by the filter member 9. And a projection 13 which also serves to prevent displacement. Reference numeral 14 indicates a fold. That is, the filter member 9 is sandwiched between the bent bent piece 12 and the projection 13. In the example shown in FIGS. 3A and 3B, the filtering member 9 is interposed between the double bent piece 12 and the projection 13, and the bent piece 12 is pressed against the projection 13 so that the filtration is performed. The end of the member 9 is held.

Thus, the bent piece 1 is integrally formed with the plate 8.
By forming the projections 2 and the projections 13, the filter member 9 is securely held on the plate 8 without displacement, without separately preparing a clamping member (strut) for holding the filter member 9 on the plate 8.

In the examples shown in FIGS. 3A and 3B, the filtering member 9 is sandwiched between the double bent piece 12 and the projection 13, but the specific example of the holding structure is not limited to this. .

For example, as shown in FIGS. 4A and 4B, the filter member 9 is sandwiched between the single bent piece 12 and the projection 13 of the plate 8, and the end of the bent piece 12 is cut. The filtration member 9 may be held by being pressed against the projection 13.

In the example shown in FIGS. 5A and 5B, the protruding portion 12A is provided on the single bent piece 12 of the plate 8, while the concave portion 8A is formed on the portion of the plate 8 which overlaps the bent piece 12.
Is provided. The protruding portion 12A is formed with a constricted base, while the concave portion 8A is formed with a narrow opening and a wide middle. As a result, when the convex portion 12A is fitted into the concave portion 8A, it becomes like a snap and cannot be easily removed. That is, the bent piece 12 is bent, the projection 12A is fitted into the recess 8A with the filter cloth member 9 interposed therebetween, and the end of the bent piece 12 is pressed against the projection 13.

FIGS. 3A and 3B and FIG. 4A described above.
(B), in the example shown in FIGS. 5A and 5B, the filtering member 9 is provided along one side (outer side) of the plate 8. On the other hand, as shown in FIG. 6, the filtering member 9 may be provided so as to make a round in the filtering chamber. According to this, as a result of the filtration area being increased, the filtration performance is improved. In the example shown in FIG. 6, a single filtering member 9 surrounds the entire circumference of the plate 8 so that one end of the plate 8 is sandwiched between both ends of the filtering member 9. It is pinched by. The holding member 15 is made of, for example, a thin metal plate and has a substantially U-shaped cross section. In the present embodiment, the filtering member 9 is provided so as to make one round around the entire circumference of the plate 8. However, the present invention is not limited to this, and the plate 8 may be omitted and only the filtering member 9 may be provided so as to make one round in the filtering chamber. .

In either case where the filter member 9 is provided only on one side of the plate 8 or where the filter member 9 is provided so as to make a full circumference, the filter member 9 is shown in FIG. 7 by ultrasonic vibration using an ultrasonic vibrator (not shown). In this way, the resin plate 8 may be melted and the filter member 9 may be welded. Of course, welding by vibration other than ultrasonic vibration may be used. In FIG. 7, reference numeral 15A indicates a vibration welding portion. In the case of vibration welding, the filtering member 9 is joined to the plate 8 simply and at low cost.

As shown in FIGS. 1 and 2, the delivery pipe 7 is provided on the lid 3 and has a portion extending outside the filter and a portion extending inside the filtration chamber 4. The delivery pipe 7 is formed with a notch 16 extending from the lower end of the portion extending into the filtration chamber 4 to the height substantially equal to the upper end position of the filtering member 9. The notch 16 of the present embodiment is formed in a slit shape extending in the vertical direction.

The notch 16 is provided to prevent air from being trapped near the upper part of the filter member 9 in the filter chamber 4. If there is an air pocket, the amount of static electricity generated due to friction between the fuel and the filter member 9 increases.
Not preferred.

The fuel filter 1 configured as described above filters and sends out fuel as follows.

The fuel discharged from the fuel pump passes through the inlet passage 6 of the fuel filter 1 and enters the filtration chamber 4.
After being filtered by the filtering member 9, it is sent to the engine side through the delivery pipe 7.

Since the cutout 16 is formed in the delivery pipe 7 from the lower end to the upper end of the filter member 9, it is possible to prevent air from being trapped near the upper portion of the filter member 9 in the filter chamber 4. Since no air is trapped, friction between the fuel and the filter member 9 is reduced. As a result, as shown in FIG. 18A, the amount of generated electricity is reduced as compared with B of the prior art. Further, the generated static electricity is stable and does not include much wave components. Furthermore, because there is no air pocket,
The entire area of the filter member 9 including the upper end is used for filtration, and the filter member 9 has a long life.

The present invention is not limited to the above-described embodiment, and various modifications can be made.

For example, in the above-described embodiment, the plate 8 separate from the cover 3 is attached to the cover 3, but the invention is not limited to this. As shown in FIG. 8
May be integrally molded. In this case, the number of parts is reduced, and the number of assembling steps is reduced.

In the above-described embodiment, the plate 8
Although the end plate 10 is fixed to the plate 8, the present invention is not limited to this, and the end plate 10 may be integrally formed with the plate 8 as shown in FIG. In this case, the step of attaching the end plate 10 to the plate 8 is reduced.

In the above embodiment, the plate 8
The lower end of the plate 8 is formed straight, but is not limited to this. As shown in FIG.
May be provided.
According to this, the adhesive (adhesive layer 17 </ b> B) that attaches the filter member 9 to the end plate 10 is hooked on the protrusion 11, and the filter member 9 is strongly fixed to the end plate 10. Therefore, end plate 1
0 is prevented from dropping from the filtering member 9. Protrusion 1
1 may be provided over the entire circumference of the lower end of the plate 8 or may be provided partially in the circumferential direction.

In the above embodiment, the plate 8
The end plate 10 was fixed to the end plate 10, and the lower end of the filter member 9 was fixed to the end plate 10 by bonding with an adhesive. In contrast, FIG.
0, as shown in FIG. 11, the lower end of the filtering member 9 may be solidified with an adhesive (adhesive layer 17B), and the end plate 10 may be omitted. For example, a template (not shown) having the same shape as the end plate is prepared, a template coated with an adhesive is attached to the lower end of the filter member 9, and when the adhesive is solidified, the template is removed from the filter member 9. Shall be. Then, the lower end of the filtering member 9 is in a state of being hardened by the adhesive.

In the example shown in FIG. 11, the plate 8 is integrally formed with the lid 3 and the lower end of the filter member 9 is fixed with an adhesive (adhesive layer 17B) to omit the end plate. The lower end of the plate 8 is combined with a protrusion 11 provided to protrude toward the filter member 9. As described above, even if the lower end of the filter member 9 is fixed by the adhesive (adhesive layer 17B) and the end plate is omitted,
If the plate 8 has the protrusions 11, the adhesive (adhesive layer 17)
B) is hooked on the projection 11, so that the plate 8 and the filter
There is an advantage that the holding force with the above becomes stronger.

Further, in the above-described embodiment, a slit-shaped structure is shown as a structure for preventing air accumulation formed in the delivery pipe 7, but the present invention is not limited to this. For example, as shown in FIGS. It may be formed. Notch 1 shown in FIG.
6 is formed in a tapered shape. The notch 16 shown in FIG. 13 is formed by deleting one side.

[0070]

As described above, the fuel tank of the in-tank type according to the present invention has the following effects.

(1) According to the in-tank type fuel filter of the first aspect, since the filter is provided on the lid, the upper end plate becomes unnecessary, the number of parts is reduced, and the assembling process is reduced. As a result, the manufacturing cost of the fuel filter can be reduced.

Further, unlike the case where the upper end plate is welded to the lid, there is no fear that unfiltered fuel leaks from the welded portion to the delivery pipe side.

Also, unlike the case where the upper end plate is welded to the lid, burrs are not sent out from the delivery pipe to the engine side.

(2) According to the in-tank type fuel filter of the second aspect, since the filter is provided on the lid, the upper end plate becomes unnecessary, the number of parts is reduced, and the assembling process is reduced. As a result, the manufacturing cost of the fuel filter can be reduced. Further, unlike the case where the upper end plate is welded to the lid, there is no fear that unfiltered fuel leaks from the welded portion to the delivery pipe side. Furthermore, unlike the case where the upper end plate is welded to the lid, burrs are not sent out from the delivery pipe to the engine side.

Further, since the plate is formed integrally with the lid, the number of assembling steps can be reduced, and the manufacturing cost can be reduced.

(3) According to the in-tank type fuel filter of the third aspect, the end plate is formed integrally with the plate.

Accordingly, as compared with the case where the end plate is attached to the plate, the number of assembling steps can be reduced, and the manufacturing cost of the fuel filter can be reduced.

(4) According to the in-tank type fuel filter of the fourth aspect, the lower end of the filter member is solidified by the adhesive. Therefore, the number of end plates can be reduced, the number of parts can be reduced, and the number of assembling steps can be reduced. As a result, the manufacturing cost of the fuel filter can be reduced.

(5) According to the in-tank type fuel filter of the fifth aspect, the lower end of the filter member is solidified by the adhesive. Therefore, the number of end plates can be reduced, the number of parts can be reduced, and the number of assembling steps can be reduced. As a result, the manufacturing cost of the fuel filter can be reduced.

(6) According to the in-tank type fuel filter of the sixth aspect, the projection protruding toward the filter member is provided integrally with the plate at the lower end of the plate. Therefore, when fixing the filtering member to the end plate with an adhesive,
Since the adhesive is hooked on the projection and the filter member is strongly fixed, it is possible to prevent the end plate from falling off the filter member. Further, when the end plate is omitted, the holding force of the filter member by the plate can be enhanced.

(7) According to the in-tank type fuel filter of the seventh aspect, the filtering member is held between the bent piece of the resin plate and the projection on the plate. That is, the filter member can be securely held without being displaced without separately preparing a clamp member for clamping the filter member to the plate. Therefore, the number of parts can be reduced, and the manufacturing cost of the fuel filter can be reduced.

(8) According to the in-tank type fuel filter of the eighth aspect, since the plate and the filter member are joined by vibration welding, they can be joined easily and at low cost.

(9) According to the in-tank type fuel filter of the ninth aspect, the filter member is provided so as to make one round in the filtration chamber. That is, as compared with the case where the filtering member is only provided on one side, the filtering area is increased, and the filtering performance can be improved.

(10) According to the in-tank type fuel filter of the tenth aspect, since the filter member is provided so as to make a round in the filter chamber, compared with the case where the filter member is provided only on one side. And the filtration area becomes wider,
The filtration performance can be improved.

(11) According to the in-tank type fuel filter of the eleventh aspect, the delivery pipe is formed with a notch extending from the lower end to substantially the same height as the upper end position of the filtering member. Therefore, it is possible to prevent the formation of an air pool near the upper part of the filtering member in the filtering chamber.

Since no air is trapped, the friction between the fuel and the filtering member can be reduced, and the amount of electricity generated can be reduced. In addition, the generated static electricity can be stable without much wave components. Furthermore, because there is no air pocket,
The entire region of the filter member including the upper end portion is used for filtration, and a longer life of the filter member can be realized.

(12) According to the in-tank type fuel filter of the twelfth aspect, a slit-shaped notch is formed in the delivery pipe. Therefore, it is possible to prevent the formation of an air pool near the upper part of the filtering member in the filtering chamber.

Since no air is trapped, the friction between the fuel and the filtering member can be reduced, and the amount of electricity generated can be reduced. In addition, the generated static electricity can be stable without much wave components. Furthermore, since there is no air pocket, the entire area including the upper end of the filter member is used for filtration, and the life of the filter member can be extended.

(13) According to the in-tank type fuel filter of the thirteenth aspect, the delivery pipe is formed with a tapered notch. Therefore, it is possible to prevent the formation of an air pool near the upper part of the filtering member in the filtering chamber.

Since no air is trapped, the friction between the fuel and the filter member can be reduced, thereby reducing the amount of electricity generated. In addition, the generated static electricity can be stable without much wave components. Furthermore, since there is no air pocket, the entire area including the upper end of the filter member is used for filtration, and the service life of the filter member can be extended.

(14) According to the fuel tank of the in-tank type according to the fourteenth aspect, the notch with one side removed from the delivery pipe is formed. Therefore, it is possible to prevent the formation of an air pool near the upper part of the filtering member in the filtering chamber.

Since no air is trapped, the friction between the fuel and the filtering member can be reduced, and the amount of electricity generated can be reduced. In addition, the generated static electricity can be stable without much wave components. Furthermore, since there is no air pocket, the entire area including the upper end of the filter member is used for filtration, and the service life of the filter member can be extended.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an entire embodiment of an in-tank type fuel filter of the present invention.

FIG. 2 is a partial view of the fuel filter of FIG.

3A and 3B are perspective views showing an example of a holding structure of a filter member by a plate of the fuel filter of FIG. 1; FIG. 3A shows an open state before holding, and FIG. 3B shows a holding state;

FIG. 4 is a perspective view showing another example of a holding structure of the filtering member by a plate, and FIG.
(B) shows the holding state.

FIG. 5 is a perspective view showing still another example of a holding structure of the filtering member by a plate, and FIG. 5A is an open state before holding,
(B) shows the holding state.

FIG. 6 is a schematic diagram illustrating an example of a filtering member provided around the filtration chamber.

FIG. 7 is a schematic view showing another example of a filtering member provided around the filtration chamber.

FIG. 8 is a longitudinal sectional view showing another embodiment of the in-tank type fuel filter of the present invention.

FIG. 9 is a longitudinal sectional view showing still another embodiment of the in-tank type fuel filter of the present invention.

FIG. 10 is a longitudinal sectional view showing still another embodiment of the in-tank type fuel filter of the present invention.

FIG. 11 is a longitudinal sectional view showing still another embodiment of the in-tank type fuel filter of the present invention.

FIG. 12 is a partial longitudinal sectional view showing another example of the cutout of the delivery pipe.

FIG. 13 is a partial vertical sectional view showing still another example of the cutout of the delivery pipe.

FIG. 14 is a longitudinal sectional view showing the entirety of a fuel filter according to an undisclosed prior art.

15 is a partially enlarged view of the fuel filter of FIG.

FIG. 16 is a cross-sectional view of the fuel filter of FIG.

FIG. 17 is a partially enlarged view of FIG. 16;

FIG. 18 is a graph showing a voltage of static electricity generated by the present invention of FIG. 1 and the prior art of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel filter 2 Container 3 Lid 4 Filtration chamber 5 Filtration body 6 Inlet pipe 7 Outlet pipe 8 Plate 9 Filter member 10 End plate 11 Projection 12 Folding piece 13 Projection 15 Clamping member 16 Notch

Claims (14)

[Claims] 1. A filter body is accommodated in a filtration chamber partitioned by a container and a lid, and a delivery pipe for delivering fuel from the filtration chamber is provided in the lid. The filtration body is a pleated filtering member and the filtering member. In a fuel filter of an in-tank type having a plate for holding the filter, the plate is provided separately from the lid, the upper end is attached to the lid, and the lower end is fixed to the end plate. Wherein the lower end is fixed to the end plate and provided. 2. A filter body is accommodated in a filtration chamber partitioned by a container and a lid, and a delivery pipe for delivering filtered fuel from the filtration chamber is provided in the lid, and the filtration body includes a pleated filtering member. In the in-tank type fuel filter having a plate holding the filtering member, the plate is formed integrally with the lid and the lower end is fixed to the end plate, and the upper end of the filtering member is fixed to the lid and the lower end is An in-tank type fuel filter fixed to an end plate. 3. A filter body is accommodated in a filtration chamber defined by a container and a lid, and a delivery pipe for delivering filtered fuel from the filtration chamber is provided in the lid, and the filtration body is provided with a pleated filtering member. An in-tank type fuel filter having a plate for holding the filtering member, wherein the plate is provided separately from the lid, an end plate is integrally formed at a lower end, and an upper end is attached to the lid, and the filtering member has an upper end. Wherein the lower end is fixed to the lid and the lower end is fixed to the end plate. 4. A filter body is accommodated in a filtration chamber defined by a container and a lid, and a delivery pipe for delivering fuel from the filtration chamber is provided in the lid, and the filtration body is a pleated filtering member and the filtering member. In a fuel filter of the in-tank type having a plate holding the plate, the plate is provided separately from the lid and the upper end is attached to the lid, and the filtering member is fixed at the upper end to the lid and the lower end is bonded by an adhesive. An in-tank type fuel filter characterized by being solidified. 5. A filter body is accommodated in a filtration chamber defined by a container and a lid, and a delivery pipe for delivering filtered fuel from the filtration chamber is provided in the lid, and the filtration body is provided with a pleated filtering member. An in-tank type fuel filter having a plate holding the filtering member, wherein the plate is integrally formed with a lid, and the filtering member is provided with the upper end fixed to the lid and the lower end solidified by an adhesive. An in-tank type fuel filter characterized by the following: 6. The plate according to claim 1, wherein a projection is provided at a lower end of the plate in a direction of the filter member.
The in-tank type fuel filter according to any one of claims 2, 4, and 5. 7. The plate has, at its left and right ends, a bent piece provided on the filter member side so as to be bendable, and a projection for sandwiching the filter member together with the bent piece. The in-tank type fuel filter according to any one of claims 1 to 6, wherein: 8. The in-tank type fuel filter according to claim 1, wherein the plate and the filter member are joined by vibration welding. 9. A filter body is accommodated in a filtration chamber defined by a container and a lid, and a delivery pipe for delivering fuel from the filtration chamber is provided in the lid, and the filtration body has an in-tank having a pleated filtering member. An in-tank type fuel filter, wherein the filter member has an upper end attached to the lid, a lower end fixed to the end plate, and provided so as to make a round in the filtration chamber. filter. 10. A filter body is accommodated in a filtration chamber defined by a container and a lid, and a delivery pipe for delivering fuel from the filtration chamber is provided on the lid, and the filtration body has an in-tank having a pleated filtering member. An in-tank type fuel filter characterized in that the filter member has an upper end attached to a lid, a lower end solidified by an adhesive, and is provided so as to make a round in the filtration chamber. filter. 11. A notch is formed in the delivery pipe from a lower end of a portion extending into the filtration chamber to a height substantially equal to an upper end position of the filtration member.
Claim 3, Claim 4, Claim 5, Claim 9, or Claim 1
0. The in-tank type fuel filter according to any one of 0. 12. The in-tank type fuel filter according to claim 11, wherein the cutout of the delivery pipe is formed in a slit shape. 13. The in-tank type fuel filter according to claim 11, wherein the cutout of the delivery pipe is formed in a tapered shape. 14. The in-tank type fuel filter according to claim 11, wherein the cutout of the delivery pipe is formed by deleting one side.