JP3967798B2 - In-tank fuel filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-tank type fuel filter that is installed immersed in a fuel tank, feeds fuel from a fuel pump that is also disposed in the fuel tank, and sends the filtered fuel to the engine side.
[0002]
[Prior art]
This in-tank fuel filter is generally provided with a filter body accommodated in a filter chamber partitioned by a container and a lid.
[0003]
This in-tank type fuel filter will be described with reference to FIGS. 14 to 18 by taking as an example one previously proposed by the present applicant.
[0004]
As shown in FIG. 14, the in-tank type fuel filter 101 is disposed on the outer periphery of a cylindrical casing of a fuel pump 117 built in the fuel tank 116, and is formed in a U-shaped cross section. Yes.
[0005]
This in-tank type fuel filter 101 accommodates a filter body 105 in a filter chamber 104 partitioned by a container 102 and a lid body 103. The lid 103 is provided with an inlet pipe 106 and an outlet pipe 107.
[0006]
Here, the filter body 105 includes a plate 108 that is formed along one of the inner and outer walls of the container 102, and a filter member 109 that is held by the plate 108 and folded in a pleat shape. Yes. The filter body 105 including the plate 108 and the filter member 109 has an upper end fixed to the upper end plate 118 and a lower end fixed to the lower end plate 110.
[0007]
The plate 108 is plastically deformed from a thin metal plate by a press or the like, and is attached to a lid 103 made of resin.
[0008]
As shown in FIGS. 14 and 15, the upper end plate 118 is provided with a filtered fuel delivery pipe 119 for delivering the filtered fuel. The upper end plate 118 is welded to the lid body 103. That is, the upper end plate 118 and the lid 103 are welded at a location (welding portion 120) 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.
[0009]
The plate 108 has a straight lower end and is fixed to the lower end plate 110 by bonding.
[0010]
As shown in FIGS. 16 and 17, the plate 108 made of a thin metal plate is bent at both ends in the circumferential direction, and holds both ends of the filter member 109 by caulking.
[0011]
Further, as shown in FIG. 16, the filtering member is provided only on one side (outer side) of the plate 108.
[0012]
Further, the filtered fuel delivery pipe 119 extending into the filtration chamber 104 is formed in a substantially cylindrical shape.
[0013]
[Problems to be solved by the invention]
[0014]
The fuel filter 101 has the following problems.
[0015]
(1) The upper end of the filter body 105 including the filter member 109 and the plate 108 is fixed to the upper end plate 118. According to this, the number of parts is increased by the amount necessary for the upper end plate 118, the assembly process is increased, and the manufacturing cost of the fuel filter 101 is increased.
[0016]
Further, the upper end plate 118 and the lid body 103 are welded at a location (welding portion 120) where the filtered fuel delivery pipe 119 of the upper end plate 118 and the delivery pipe 107 of the lid body 103 are directly connected. If the sealing property of the welded portion 120 is incomplete, unfiltered fuel in the filtration chamber 104 may enter the delivery pipe 107 and be sent toward the engine side.
[0017]
Further, the burr 121 (see FIG. 15) generated on the inner peripheral side of the welded portion 120 between the filtered fuel delivery pipe 119 and the delivery pipe 107 may drop and be sent to the engine side together with the fuel flowing through the delivery pipe 107. There is also.
[0018]
(2) The lower end plate 110 that is separate from the plate 108 is attached to the plate 108, and the assembly process is increased correspondingly, leading to an increase in the manufacturing cost of the fuel filter 101.
[0019]
(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 necessary for the lower end plate 110.
[0020]
(4) The lower end plate 110 is bonded to the lower ends of the filter member 109 and the plate 108. However, when the holding force is not sufficient, there is a risk of falling off due to the influence of vehicle vibration or the like.
[0021]
(5) Both ends in the circumferential direction of the plate 108 made of a thin metal plate are bent and held by crimping both ends of the filter member 109 (see FIG. 17). However, there is a possibility that the filtering member is displaced in the x direction in FIG. 17 from the caulking portion of the plate 108. If the filter member 109 is displaced and a gap is formed between the filter member 109 and the filter 108, unfiltered fuel may enter through the gap and be sent to the engine side through the delivery pipe 107.
[0022]
On the other hand, if another member is provided to prevent the displacement of the filter member 109, the number of parts increases and the assembly process increases, and the manufacturing cost of the fuel filter 101 increases.
[0023]
(6) The filtration member 109 is provided only on one side (outer side) of the plate 108. Therefore, the area of the filter member 109 is limited, and the filtration performance is restricted.
[0024]
(7) The filtered fuel delivery pipe 119 is formed so that the portion extending into the filtration chamber 104 is substantially cylindrical. Therefore, as shown in FIG. 15, an air reservoir 125 is formed near the upper portion of the filtration member 109 in the filtration chamber 104. Reference numeral 126 indicates the free liquid level of the fuel.
[0025]
Due to the air reservoir 125, when the fuel flows into the filter chamber 104, the fuel and the surface of the filter member 109 are always rubbed to increase the amount of static electricity generated as shown in FIG. In addition, since the free liquid level 126 of the fuel always rises and falls and is unstable, the generated static electricity is unstable with waves.
[0026]
Furthermore, if there is an air reservoir 125, the upper part of the filtering member 109 does not perform the filtering action, so the filtering member 109 cannot be used in the entire region, and the life is shortened.
[0027]
The present invention has been developed to solve the above-described problems in fuel filters. In addition, as a prior art, a fuel filter having a U-shaped cross section is given as an example. However, the present invention is not limited to this, and can be applied to an in-tank type fuel filter installed in a fuel tank. It is.
[0028]
The first object of the present invention is to reduce the number of parts and the assembly process by reducing the upper end plate, thereby reducing the manufacturing cost of the fuel filter, and between the lid and the upper end plate. To provide an in-tank fuel filter that prevents unfiltered fuel from entering a delivery pipe from a welded portion, and further prevents burrs in the welded portion from being sent to the engine side together with fuel flowing through the delivery pipe. is there.
[0029]
A second object of the present invention is to provide an in-tank type fuel filter that reduces the manufacturing cost by reducing the step of attaching the end plate to the plate.
[0030]
A third object of the present invention is to provide an in-tank type fuel filter that can reduce the manufacturing cost by making it possible to reduce the end plate itself that fixes the lower end of the filter member.
[0031]
The fourth object of the present invention is to increase the holding power of the plate and the end plate, and the plate and the filtering member, thereby preventing the end plate from falling off, and enhancing the holding power of the plate and the filtering member. A fuel filter of the type is provided.
[0032]
A fifth object of the present invention is to provide an in-tank type fuel filter that prevents the filter member from being displaced from the plate without using another member.
[0033]
A sixth object of the present invention is to provide an in-tank type fuel filter that improves the filtration performance by increasing the area of the filtration member.
[0034]
The seventh object of the present invention is to reduce the amount of static electricity generated by reducing the friction between the fuel and the filter member as much as possible by preventing air from being collected near the upper portion of the filter member in the filter chamber. Another object of the present invention is to provide an in-tank type fuel filter in which the generated static electricity is stable without wave.
[0035]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention is configured as follows.
[0036]
(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 upper end of the filtration member is the lid The lower end is fixed to the end plate. In another aspect of the present invention, the plate is integrally formed 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.
[0037]
(2) In order to achieve the second object, in the present invention, the end plate is formed integrally with the plate.
[0038]
(3) In order to achieve the third object, in the present invention, the lower end of the filter member is solidified with an adhesive.
[0039]
(4) In order to achieve the fourth object, in the present invention, the plate is integrally formed with a protrusion at the lower end in the direction of the filtering member.
[0040]
(5) Moreover, in order to achieve the fifth object, in the present invention, the plate is provided with a folded piece provided at the end in the circumferential direction so as to be foldable on the filter member side, and a folded piece folded. A protrusion for swallowing the filter member is provided. In another aspect of the present invention, the plate and the filtering member are joined by vibration welding.
[0041]
(6) Moreover, in order to achieve the sixth object, in the present invention, the filtration member is provided so as to make a round in the filtration chamber.
[0042]
(7) Further, in order to achieve the seventh object, in the present invention, the delivery pipe is formed with a notch from the lower end of the portion extending into the filtration chamber to substantially the same height as the upper end position of the filtration member.
[0043]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 to 13 and FIG.
[0044]
FIG. 1 shows an embodiment of the fuel filter of the present invention.
[0045]
The fuel filter 1 has a U-shaped cross section and is disposed on the outer periphery of a cylindrical casing of a fuel pump built in the fuel tank.
[0046]
The fuel filter 1 includes a container 2 having a U-shaped cross section, a lid 3 that partitions the filtration chamber 4 together with the container 2, a filter body 5 accommodated in the filtration chamber 4, a fuel feed passage 6 and And a delivery pipe 7.
[0047]
Here, the filter body 5 includes a plate (protector) 8 formed along either one of the inner and outer walls (inner wall 2A, outer wall 2B) of the container 2 (in this example, the inner wall 2A), and the plate 8 And a filter member (filter paper) 9 that is folded into a pleat shape.
[0048]
The delivery tube 7 is provided on the lid 3. The inlet passage 6 is provided so as to supply unfiltered fuel discharged from the fuel pump to the filtration chamber 4. The delivery pipe 7 is provided so as to send the filtered fuel from the filtration chamber 4 toward the engine.
[0049]
Further, in this embodiment, the plate 8 and the filter member 9 constituting the filter body 5 are fixed to the lid body 3 with an adhesive at the upper end (see FIGS. 1 and 2) and the lower end to the end plate 10. It is provided by being bonded and fixed by an adhesive. Reference numeral 17A denotes an adhesive layer in which the filtering member 9 and the lid 3 are bonded. Reference numeral 17B denotes an adhesive layer in which the filtering member 9 and the end plate 10 are bonded.
[0050]
That is, the upper end of the filter body 5 including the filter member 9 and the plate 8 is fixed to the lid body 3. According to this, compared with the prior art (refer FIG. 14, FIG. 15) which welded the upper end plate which fixed the upper end of the filter body to the cover body, since an upper end plate becomes unnecessary, the number of parts is reduced. It becomes. In the prior art, if the sealing property 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 of such leakage of unfiltered fuel into the delivery pipe. Furthermore, in the prior art, there is a concern that burrs generated when the upper end plate is welded to the lid body may drop off and be sent to the engine side through the delivery pipe. There is no such thing.
[0051]
The resin plate 8 is provided with a holding structure for the filtering member 9 as exemplified in FIGS. 3 (A) and 3 (B). That is, the resin plate 8 includes a bent piece 12 provided at the end in the circumferential direction so as to be foldable, and the end of the filter member 9 is swollen together with the bent piece 12 and is filtered. And a protrusion 13 that also serves to prevent misalignment. Reference numeral 14 indicates a fold. That is, the filtering member 9 is squeezed between the bent piece 12 and the projection 13. In the example of FIGS. 3A and 3B, the filtering member 9 is sandwiched between the double bent piece 12 and the projection 13 so that the bent piece 12 is crimped to the projection 13 and filtered. The end of the member 9 is held.
[0052]
In this way, by forming the bent piece 12 and the protrusion 13 integrally with the plate 8, the filtering member 9 can be formed without separately preparing a tie member (strut) in order to hold the filtering member 9 on the plate 8. It is securely held on the plate 8 without shifting.
[0053]
In the example of FIGS. 3A and 3B, the filtering member 9 is sandwiched between the double bent piece 12 and the protrusion 13, but the specific example of the holding structure is not limited to this.
[0054]
For example, as shown in FIGS. 4A and 4B, the filter member 9 is sandwiched between the single bent piece 12 and the protrusion 13 of the plate 8, and the end of the bent piece 12 is put into the protrusion 13. The filtering member 9 may be held by pressure bonding.
[0055]
In the example shown in FIGS. 5A and 5B, the convex portion 12 </ b> A is provided on the single bent piece 12 of the plate 8, while the concave portion 8 </ b> A is provided on the portion overlapping the bent piece 12 of the plate 8. The convex portion 12A has a narrowed base, while the concave portion 8A has a narrow opening and a wide middle portion. Thereby, when the convex portion 12A is fitted into the concave portion 8A, it becomes like a snap and does not easily come off. That is, the bent piece 12 is bent, the convex portion 12A is fitted into the concave portion 8A with the filter cloth member 9 interposed therebetween, and the end portion of the bent piece 12 is crimped to the protrusion 13.
[0056]
In the example shown in FIGS. 3A, 3B, 4A, 4B, 5A, and 5B, the filtering member 9 is provided along one side surface (outer side surface) of the plate 8. It is done. On the other hand, as shown in FIG. 6, you may provide the filtration member 9 so that it may make a round in a filtration chamber. According to this, the filtration performance is improved as a result of the wide filtration area. In the example shown in FIG. 6, a single filter member 9 surrounds and surrounds the entire circumference of the plate 8, and one end of the plate 8 is clamped at both ends of the filter member 9, and the attachment member (strut) 15. It is attached by. The attachment member 15 is made of, for example, a thin metal plate and has a substantially U-shaped cross section. In the present embodiment, the entire periphery of the plate 8 is provided so that the filtration member 9 makes a round. However, the present invention is not limited to this, and the plate 8 may be omitted and only the filtration member 9 may be provided so as to make a round in the filtration chamber. .
[0057]
As shown in FIG. 7, the filtering member 9 is provided only on one side of the plate 8 or is provided so as to make a round, and in any case, by ultrasonic vibration using an ultrasonic vibrator (not shown), The filter plate 9 may be welded by melting the resin plate 8. Of course, welding by vibration other than ultrasonic vibration may be used. In FIG. 7, reference numeral 15A denotes a vibration welding portion. In the case of vibration welding, the filter member 9 is joined to the plate 8 easily and at low cost.
[0058]
Moreover, the delivery pipe | tube 7 is provided in the cover body 3 as shown in FIG. 1 and FIG. 2, and has the part extended outside the filter, and the part extended in the filtration chamber 4. As shown in FIG. The delivery pipe 7 has a notch 16 formed from the lower end of the portion extending into the filtration chamber 4 to substantially the same height as the upper end position of the filtration member 9. The notch 16 of the present embodiment is formed in a slit shape extending in the vertical direction.
[0059]
This notch 16 is provided in order to prevent air from being accumulated near the upper portion of the filtration member 9 in the filtration chamber 4. If there is air accumulation, the amount of static electricity generated increases due to friction between the fuel and the filter member 9, which is not preferable.
[0060]
In the fuel filter 1 configured as described above, the fuel is filtered and sent out as follows.
[0061]
The fuel discharged from the fuel pump passes through the inlet passage 6 of the fuel filter 1, enters the filtration chamber 4, is filtered by the filter member 9, and then is sent to the engine side through the delivery pipe 7.
[0062]
Since the notch 16 is formed in the delivery pipe 7 from the lower end to the upper end position of the filtration member 9, it is possible to prevent air from being accumulated near the upper portion of the filtration member 9 in the filtration chamber 4. Since air cannot be retained, friction between the fuel and the filter member 9 is reduced. As a result, as shown in FIG. 18A, the amount of electricity generated is reduced compared to B of the prior art. Further, the generated static electricity is stable and does not contain much wave components. Furthermore, since there is no air accumulation, the entire region including the upper end portion of the filtering member 9 is used for filtering, and the filtering member 9 has a long life.
[0063]
The present invention is not limited to the above-described embodiments, and various modifications can be implemented.
[0064]
For example, in the above-described embodiment, the plate 8 that is separate from the lid 3 is attached to the lid 3. However, the present invention is not limited thereto, and the plate 8 is integrated with the resin lid 3 as shown in FIG. You may make it shape | mold. In this case, the number of parts is reduced, and the assembly process is reduced.
[0065]
In the above-described embodiment, the end plate 10 is fixed to the plate 8. However, 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 process of attaching the end plate 10 to the plate 8 is reduced.
[0066]
In the embodiment described above, the lower end of the plate 8 is formed straight. However, the present invention is not limited to this, and as shown in FIG. 8 described above, the protrusion 11 protrudes in the direction of the filter member 9 at the lower end of the plate 8. May be provided. According to this, the adhesive (adhesive layer 17 </ b> B) that adheres the filtering member 9 to the end plate 10 is hooked on the protrusion 11, and the filtering member 9 is firmly fixed to the end plate 10. Therefore, the end plate 10 is prevented from falling off the filtering member 9. The protrusion 11 may be provided over the entire periphery of the lower end of the plate 8 or may be provided partially in the circumferential direction.
[0067]
In the above-described embodiment, the end plate 10 is fixed to the plate 8, and the lower end of the filtering member 9 is bonded to the end plate 10 with an adhesive and fixed. On the other hand, as shown in FIGS. 10 and 11, the lower end of the filter member 9 may be solidified with an adhesive (adhesive layer 17 </ b> B), and the end plate 10 may be omitted. For example, a template (not shown) having the same shape as the end plate is prepared, and 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. Then, the lower end of the filter member 9 is in a state of being hardened with an adhesive.
[0068]
In the example shown in FIG. 11 described above, a configuration in which the plate 8 is integrally formed with the lid 3, a configuration in which the lower end of the filter member 9 is fixed with an adhesive (adhesive layer 17 </ b> B), and an end plate is omitted, A projection 11 provided at the lower end so as to project toward the filtration member 9 is combined. Thus, even if the lower end of the filter member 9 is hardened with an adhesive (adhesive layer 17B) and the end plate is omitted, the adhesive ( Since the adhesive layer 17 </ b> B) is caught on the protrusion 11, there is an advantage that the holding force between the plate 8 and the filtering member 9 is increased.
[0069]
Further, in the above-described embodiment, the slit-like structure is shown as the structure for preventing air accumulation formed in the delivery pipe 7, but the structure is not limited to this, for example, as shown in FIGS. 12 and 13. Also good. The notch 16 shown in FIG. 12 is formed in a tapered shape. The notch 16 shown in FIG. 13 is formed by deleting one side.
[0070]
【The invention's effect】
As described above, the in-tank type fuel filter of the present invention has the following effects.
[0071]
(1) According to the in-tank type fuel filter of the first aspect, since the filter body is provided on the lid body, the upper end plate is not required, the number of parts can be reduced and the assembly process can be reduced. The manufacturing cost of the fuel filter can be reduced.
[0072]
Moreover, there is no fear that unfiltered fuel leaks from the welded portion to the delivery pipe side as in the case where the upper end plate is welded to the lid.
[0073]
  Further, unlike the case where the upper end plate is welded to the lid body, burrs are not sent from the delivery pipe to the engine side.Moreover, the lower end of the filter member is solidified with an adhesive. Therefore, the end plate can be reduced, the number of parts and the assembly process can be reduced, and the manufacturing cost of the fuel filter can be reduced.
[0074]
(2) According to the in-tank type fuel filter of claim 2, since the filter body is provided on the lid body, the upper end plate is not required, the number of parts can be reduced, and the assembly process can be reduced. The manufacturing cost of the fuel filter can be reduced. Moreover, there is no fear that unfiltered fuel leaks from the welded portion to the delivery pipe side as in the case where the upper end plate is welded to the lid. Further, unlike the case where the upper end plate is welded to the lid, burrs are not sent from the delivery pipe to the engine side.
[0075]
  Furthermore, since the plate is integrally formed with the lid, the number of assembling steps can be reduced, thereby reducing the manufacturing cost.Moreover, the lower end of the filter member is solidified with an adhesive. Therefore, the end plate can be reduced, the number of parts and the assembly process can be reduced, and the manufacturing cost of the fuel filter can be reduced.
[0080]
  (3Claim3According to the in-tank type fuel filter, a protrusion protruding in the direction of the filter member is provided integrally with the plate at the lower end of the plate. For this reason, when the filtration member is fixed to the end plate with an adhesive, the adhesive is caught by the protrusions and the filtration member is strongly fixed, so that the end plate can be prevented from falling off the filtration member. Moreover, when an end plate is abbreviate | omitted, the retention strength of the filtration member by a plate can be strengthened.
[0081]
  (4Claim4According to the in-tank type fuel filter, the filter member is held between the bent piece of the resin plate and the protrusion on the plate. In other words, the filtration member can be reliably held without shifting without preparing a separate attachment member for attaching the filtration member to the plate. Therefore, the number of parts can be reduced, and the manufacturing cost of the fuel filter can be reduced.
[0082]
  (5Claim5According to the in-tank type fuel filter, since the plate and the filtering member are joined by vibration welding, they can be joined easily and at low cost.
[0085]
  (6Claim6According to the in-tank type fuel filter, the delivery pipe is formed with a notch from the lower end to substantially the same height as the upper end position of the filter member. Therefore, it is possible to prevent air from being accumulated near the upper portion of the filtration member in the filtration chamber.
[0086]
Since the air cannot be retained, the friction between the fuel and the filtering member can be reduced, thereby reducing the amount of electricity generated. In addition, the generated static electricity can be stable and does not contain much wave components. Furthermore, since there is no air accumulation, the entire region including the upper end portion of the filter member is used for filtration, and the life of the filter member can be extended.
[0087]
  (7Claim7According to the in-tank type fuel filter, a slit-shaped notch is formed in the delivery pipe. Therefore, it is possible to prevent air from being accumulated near the upper portion of the filtration member in the filtration chamber.
[0088]
Since the air cannot be retained, 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 and does not contain much wave components. Furthermore, since there is no air accumulation, the entire region including the upper end portion of the filter member is used for filtration, and the life of the filter member can be extended.
[0089]
  (8Claim8According to the in-tank type fuel filter, the delivery pipe is formed with a tapered notch. Therefore, it is possible to prevent air from being accumulated near the upper portion of the filtration member in the filtration chamber.
[0090]
Since the air cannot be retained, 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 and does not contain much wave components. Furthermore, since there is no air accumulation, the entire region including the upper end portion of the filter member is used for filtration, and the life of the filter member can be extended.
[0091]
  (9Claim9According to the in-tank type fuel filter, the delivery pipe is formed with a notch with one side removed. Therefore, it is possible to prevent air from being accumulated near the upper portion of the filtration member in the filtration chamber.
[0092]
Since the air cannot be retained, 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 and does not contain much wave components. Furthermore, since there is no air accumulation, the entire region including the upper end portion of the filter member is used for filtration, and the 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.
3 is a perspective view showing an example of a holding structure of a filtration member by a plate of the fuel filter shown in FIG. 1. FIG. 3 (A) shows an open state before holding, and FIG. 3 (B) shows a holding state.
FIGS. 4A and 4B are perspective views showing another example of a holding structure for a filtration member by a plate, in which FIG. 4A shows an open state before holding, and FIG. 4B shows a holding state.
FIGS. 5A and 5B are perspective views showing still another example of a structure for holding a filtration member by a plate, in which FIG. 5A shows an open state before holding, and FIG. 5B shows a holding state.
FIG. 6 is a schematic view showing an example of a filtration member provided around the filtration chamber.
FIG. 7 is a schematic view showing another example of a filtration 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 longitudinal sectional view showing still another example of the cutout of the delivery pipe.
FIG. 14 is a longitudinal sectional view showing the entire fuel filter according to the undisclosed prior art.
15 is a partially enlarged view of the fuel filter of FIG.
16 is a cross-sectional view of the fuel filter of FIG.
17 is a partially enlarged view of FIG. 16;
18 is a graph showing the voltage of static electricity generated in the present invention of FIG. 1 and the prior art of FIG.
[Explanation of symbols]
1 Fuel filter
2 containers
3 lid
4 Filtration chamber
5 Filter body
6 Delivery pipe
7 Delivery pipe
8 plates
9 Filter member
10 End plate
11 Protrusions
12 folded pieces
13 Protrusion
15 Adhering member
16 Notch

Claims (9)

Housing the filter body to the filter chamber which is defined by the container and the lid, the delivery pipe for delivering the filtered fuel from the filter chamber is provided in the lid, and the filter member and the filtration member of the filter body pleated In-tank type fuel filter having a holding plate,
The plate upper end provided on the lid and a separate body attached to said lid,
The in-tank type fuel filter is characterized in that the filter member is provided with an upper end fixed to the lid and a lower end solidified by an adhesive. Housing the filter body to the filter chamber which is defined by the container and the lid, the delivery pipe for delivering the filtered fuel from the filter chamber is provided in the lid, and the filter member and the filtration member of the filter body pleated In-tank type fuel filter having a holding plate,
The plate is integrally molded with said lid,
The in-tank type fuel filter is characterized in that the filter member is provided with an upper end fixed to the lid and a lower end solidified by an adhesive. The plates, in-tank type fuel filter according to claim 1 or claim 2, characterized in that the projection in the direction of the filter member at its lower end is provided. Said plate, characterized in that the the filter member side foldably provided with bent pieces, a protrusion interleave the filter member together with the bent piece bent is provided on the left right end The in-tank type fuel filter according to any one of claims 1 to 3 . In-tank type fuel filter according to any one of claims 1 to 3 wherein the plate and said filtration member, characterized in that it is joined by vibration welding. The delivery tube is in any one of claims 1 to 5, characterized in that the cut from the lower end portion extending into the filtration chamber over the substantially the same height as the upper end position of the filter member is formed The in-tank type fuel filter described. The in-tank type fuel filter according to claim 6 , wherein the notch is formed in a slit shape. The in-tank type fuel filter according to claim 6 , wherein the notch is formed in a tapered shape. The in-tank type fuel filter according to claim 6 , wherein the notch is formed by deleting one side.

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