JP2004324807A - Anti-static structure for fuel system tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of parts items of anti-static structure for a fuel system tube, and to easily fit the tube to a car body with one operation and ground it at the same time. <P>SOLUTION: A conductive heat shrinkage tube 16 is tightly fitted to a resin-coated tube 10 so that a part of a resin film 13 of the resin-coated tube 10 covers a peeled part, and a part of the conductive heat shrinkage tube 16 is held by a detachable clamp member 17 formed from the conductive material to fix a fuel system tube formed of the resin-coated tube 10 to a car body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an antistatic structure of a fuel tube, and more particularly to an antistatic structure of a fuel tube in which static electricity is released to a vehicle body from a structure in which a fuel pipe of an automobile is fixed to a vehicle body.
[0002]
[Prior art]
Metal tubes used for automobile fuel piping and brake hydraulic and pneumatic piping are required to have high durability, so they prevent rust and prevent corrosion due to salt damage, battery fluid, cleaning fluid, etc. Very high need to. The most basic means for enhancing corrosion resistance and chemical resistance is to apply galvanization to the outer peripheral surface of a raw tube and cover it with a resin film.
[0003]
When this type of resin-coated metal tube is used for a fuel-related collective pipe that connects the fuel tank of an automobile to the engine, this collective pipe generally extends around the lower side of the vehicle body and extends to the engine. It is necessary to increase the chipping resistance so that the pebbles and the like do not hit the inside and damage the resin film. Further, it is necessary to protect the resin film with a relatively thick resin layer in order to prevent the resin film from being damaged by rubbing pipes that follow a complicated path, a vehicle body or other parts. The uppermost layer of the relatively thick resin layer covers the entire surface of the tube by extrusion, or a tube made of a heat-shrinkable resin is inserted and heated to shrink and adhere to the entire surface of the tube. and so on.
[0004]
By the way, in a fuel system pipe of an automobile, there is a phenomenon that when fuel is discharged from a fuel tank by a pump and static electricity is generated due to friction due to flow path resistance of the fuel tube, the fuel tube is charged.
[0005]
If the charged state is left, sparks are generated, the coating of the fuel tube is damaged, and the corrosion resistance and abrasion resistance deteriorate. For this reason, conventionally, an antistatic structure has been provided which discharges static electricity by grounding to the vehicle body in the middle of the fuel system piping.
[0006]
FIG. 13 shows a conventional antistatic structure. In this antistatic structure, a plurality of fuel tubes are bound and fixed to a vehicle body, and the body is grounded to release static electricity.
[0007]
The tube 1 is covered with a cylindrical rubber 3 made of conductive rubber so as to expose a metal surface or a plated surface by exfoliating a part of the surface resin coating and to closely cover the surface. Further, in order to protect the cylindrical rubber 3, a conductive rubber 4 is overlapped and wound around the cylindrical rubber 3, the rubber 4 is surrounded by an iron frame 5, and the iron frame 5 is fixed to the vehicle body using a metal bracket 6. are doing.
[0008]
[Problems to be solved by the invention]
In the conventional antistatic structure, the number of required parts is large, such as mounting the cylindrical rubber 3 and the rubber 4 on the tube 1 and then fixing it to the vehicle body using mounting hardware such as the iron frame 5 and the bracket 6. There was a disadvantage that the work of assembling and attaching to the vehicle body was a complicated work.
[0009]
Further, water gradually penetrates into the inside of the cylindrical rubber 3, and the exposed metal surface from which the resin film 2 has been peeled off may rust, so that there is a problem in durability.
[0010]
Therefore, an object of the present invention is to solve the problems of the prior art, reduce the number of parts, and easily attach the tube to the vehicle body with one touch, and at the same time charge the fuel system tube so that it can be grounded. It is to provide a prevention structure.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a fuel tube which is formed of a resin-coated tube in which an outer peripheral portion of a metal tube is coated with a non-conductive resin film, and which is piped to a vehicle body of an automobile. An electrically-conductive heat-shrinkable tube is attached to the resin-coated tube so as to cover a part of the resin-coated tube from which the resin coating has been peeled off, and a detachable clamp made of a conductive material is provided. The conductive heat-shrinkable tube portion is held by a member, and a pipe made of the resin-coated tube is fixed to a vehicle body.
[0012]
According to a fourth aspect of the present invention, a resin tube is connected to a terminal portion of a resin-coated tube in which an outer peripheral portion of a metal tube is coated with a non-conductive resin film via a resin quick connector. An antistatic structure for a fuel tube connected to a vehicle body, wherein the main body of the quick connector is formed of a conductive resin, and the resin coating is peeled off at the end of the resin-coated tube to conduct electricity to the base tube. A portion where the portion is exposed is provided, an O-ring made of conductive rubber is used to seal the gap between the inner diameter portion of the quick connector and the terminal portion, and the quick connector is a clamp member made of a conductive material. It is characterized by being fixed to the vehicle body.
[0013]
Furthermore, the invention according to claim 5 is that at least one spool portion is formed at a terminal portion of a resin-coated tube in which an outer peripheral portion of a metal tube is coated with a non-conductive resin film, and a resin tube is attached to the terminal portion. A press-fit connection, an antistatic structure of a fuel system tube to be piped to the body of an automobile, wherein a pilot cap made of a conductive resin is attached to the end of the end of the metal tube, and the conductive resin is The resin tube is press-fitted into the resin-coated tube, and the resin tube is fixed to the vehicle body with a clamp member made of a conductive material.
[0014]
Further, the invention according to claim 8 is an antistatic structure for a fuel tube which is formed of a resin-coated tube in which an outer peripheral portion of a metal tube is coated with a non-conductive resin film and which is piped to the body of an automobile. A conductor made of a conductive material having a protrusion having a contact with a conductive part which has broken through the resin coating of the resin-coated tube and is electrically connected to the base tube, and a clamp member made of a conductive material for fixing the conductor to a vehicle body And characterized by the following.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an antistatic structure of a fuel tube according to the present invention will be described with reference to the accompanying drawings.
First Embodiment FIG. 1 shows an antistatic structure of a fuel system tube according to a first embodiment of the present invention. In FIG. 1, reference numeral 10 denotes four resin-coated tubes, each of which is a tube constituting a fuel system collective pipe extending in parallel from a fuel tank to an engine. To be fixed. FIG. 2 shows a longitudinal section of the resin-coated tube 10. Each resin-coated tube 10 in FIG. 1 is a tube having the same structure except for the outer diameter.
[0016]
As shown in FIG. 2, a resin-coated tube 10 is a tube in which an outer peripheral surface of a base tube 11 made of iron is covered with a plating film and further coated with a resin film 13 such as polyamide, and the resin film itself is non-conductive. Is an insulator. Although this resin film 13 is shown as a single layer in FIG. 2, it may be a multilayer.
[0017]
The base tube 11 is provided with a convex portion 14 that goes around in the circumferential direction at a predetermined position, and the resin film 13 covers the entire surface of the base tube 11 having the convex portion 14. The resin film 13 is peeled off over the width of the projection 14 so that the projection 14 is exposed. The heat-shrinkable tube 16 is a thin-walled tubular tube that covers a predetermined range that covers the convex portion 14 exposed from the resin film 13. The heat-shrinkable tube 16 is formed by extrusion using a resin obtained by mixing a conductive material such as carbon fiber with polyvinyl chloride or polyethylene. The reason why carbon fibers and the like are mixed is to impart conductivity to the resin.
[0018]
The inner diameter of the heat-shrinkable tube 16 at the beginning of molding is slightly larger than the outer diameter of the resin-coated tube 10, and the unshrinked heat-shrinkable tube 16 is covered with the resin-coated tube 10 so as to cover the projections 14. Thus, the heat-shrinkable tube 16 is heated and shrunk by applying hot air or the like, so that the heat-shrinkable tube 16 can be adhered to the surface of the resin-coated tube 10 without any gap.
[0019]
Next, the clamp 12 will be described. The clamp 12 is a molded product using a resin as a material. In particular, by mixing a conductive material such as carbon fiber with a resin material, the main body 17 of the clamp 12 has conductivity. In the main body 17 of the clamp 12, fitting grooves 18 into which the resin-coated tubes 10 are fitted are arranged in parallel at predetermined intervals. Claws 20 are formed so as to protrude into the respective fitting grooves 18. These claws 20 allow the passage while deforming when the resin-coated tube 10 is pushed in. However, once the resin-coated tube 10 is seated on the bottom of the fitting groove 18, each of the claws 20 is in a protruding state. To restrict the resin-coated tube 10 from falling off. In addition, the claw 20 is formed with a concave portion 21 that receives the bulge of the convex portion 14 of the resin shrink tube 10. The bottom of the main body 17 of the clamp 12 is provided with an opening for a bolt to be attached to the vehicle body side, and the bolt attached to the vehicle body is screwed into the opening from the insertion opening to thereby secure the clamp 12. The main body 17 can be directly fixed to the vehicle body.
[0020]
According to the first embodiment configured as described above, as shown in FIG. 1, in order to fix the resin-coated tube 10 to the clamp 12, the fitting groove 18 has a portion covered with the heat-shrinkable tube 16. Can be fixed to the clamp 12 with one touch.
[0021]
When the resin-coated tube 10 is fixed to the vehicle body using the clamp 12, the heat-shrinkable tube 16 in contact with the convex portion 14 of the raw tube 11 and the main body 17 of the clamp 12 are made of conductive resin. Is used as a material, a ground electrically connected to the vehicle body is formed, and static electricity generated in the resin-coated tube 10 can be released to the vehicle body.
[0022]
In addition, since the heat-shrinkable tube 16 is tightly adhered to the front and rear of the convex portion 14 by heat shrinkage so as not to form a gap, water intrusion can be prevented and durability can be ensured. In addition, if the bulge of the convex portion 14 is engaged with the concave portion 21 formed on the claw 20 of the clamp 12, the displacement can be eliminated after the resin-coated tube 10 is fixed.
[0023]
Second Embodiment Next, an antistatic structure for a fuel tube according to a second embodiment of the present invention will be described with reference to FIG.
The antistatic structure of the fuel tube according to the second embodiment is applied to a fuel tube in which a resin-coated tube 30 and a resin tube 32 are connected by using a quick connector 34.
[0024]
The main body of the quick connector 34 is a resin connector in which the cylindrical housing 31 and the press-fit mounting portion 33 are integrated. The quick connector 34 can be mounted by press-fitting the press-fit mounting portion 33 into the resin tube 32.
[0025]
Inside the housing 31, a stepped passage 35 whose inner diameter gradually decreases toward the press-fitting attachment portion 33 is formed to penetrate. In this passage 35, two O-rings 36a and 36b are mounted with a spacer interposed therebetween.
[0026]
On the other hand, the resin-coated tube 30 is provided with a spool portion 37 that goes around the outer peripheral portion at a position separated from the tip by a predetermined distance. A claw portion of the retainer 38, which will be described below, is engaged with the spool portion 37, and the claw portion is restricted so as not to come off the resin-coated tube 30 which is a male joint member.
[0027]
The retainer 38 is formed with claw portions 39a and 39b so as to extend in the axial direction. The tips of the claws 39 a and 39 b engage with the spool 37 of the resin-coated tube 30. Lock claws are formed on the outer surfaces of the claws 39a and 39b so as to engage with the edges 41a and 41b closer to the opening side of the edges of the window of the housing 31.
[0028]
Therefore, when the resin-coated tube 30 is pushed into the housing 31 after the retainer 38 is mounted on the housing 31 of the quick connector 34, the claw portions 39 a and 39 b of the retainer 38 are engaged with the spool portion 37. Thus, the lock claws of the claws 39a, 39b are engaged with the edges 41a, 41b of the window to be locked. In this locked state, even if an axial force for removing the resin-coated tube 30 is applied, the lock claws 39a and 39b of the retainer 16 prevent the resin-coated tube 30 from moving in the axial direction, and a quick connector is provided so as not to come off. 34.
[0029]
In the present embodiment, the main body of the quick connector 34 is made of a resin mixed with a conductive material such as carbon fiber to add conductivity. Further, at the tip of the resin-coated tube 30, the resin film is peeled off in the range shown in FIG. 3 so that the conductive portion electrically connected to the raw tube 11 is exposed, and the O-rings 36 a and 36 b An O-ring made of conductive rubber is used as the O-ring 36a that comes into contact with the conductive portion of the coating tube 30. Therefore, the resin-coated tube 30 is not electrically insulated, and is electrically connected to the O-ring 36a and the quick connector 34 from the conductive portion from which the resin film is peeled off. For example, the resin-coated tube 30 is described in the first embodiment. If the quick connector 34 is fixed to the vehicle body by the clamp 12, static electricity generated in the resin-coated tube 30 can be released from the clamp 12 to the vehicle body through the O-ring 36a and the quick connector 34.
[0030]
In addition, since the quick connector 34 itself is made conductive as in the present embodiment, the grounding can be performed at the same time as the normal connection work without the necessity of a particularly necessary component for grounding.
[0031]
In the above-described embodiment, an example in which the conductive O-ring 36a is used has been described. However, the tip portion of the resin-coated tube 30 from which the resin film has been peeled or the end surface of the metal tube whose tip portion is not covered with the resin film originally. A ring made of a conductive resin may be mounted, and this ring may be brought into contact with the inner peripheral surface of the quick connector 34.
[0032]
Third Embodiment Next, FIG. 4 shows an antistatic structure for a fuel system tube according to a third embodiment of the present invention.
The third embodiment is an embodiment in which the antistatic structure of the present invention is applied to a connection structure of a fuel tube proposed by the present applicant in Japanese Patent Application Laid-Open No. 8-75069.
[0033]
In the terminal connection portion of the resin-coated tube 50 used in the third embodiment, a first spool portion 51 is formed at a position close to the distal end, and at a position separated from the first spool portion 51 by a predetermined distance. A second spool portion 52 is formed at the bottom. A pilot cap 54 is attached to the tip of such a resin-coated tube 50. In addition, only the first spool unit 51 may be used as the spool unit.
[0034]
The pilot cap 54 is a member for guiding the press-fitting of the resin tube 56 of the other party. The pilot cap 54 includes a cylindrical portion 54a which is fitted to the distal end of the resin-coated tube 50 by press-fitting, and a tapered portion 54b whose diameter decreases toward the distal end. It is a cap that has become. When the resin tube 56 is press-fitted into the resin-coated tube 50 while guiding the tapered portion 54b of the pilot cap 54 as a guide, the resin tube 56 can be connected to the first spool portion 51 and the second spool portion 52 so as not to be caught and removed. . An O-ring 60 is mounted between the pilot cap 55 and the first spool 51 to prevent water or the like from entering the inside of the pilot cap 55.
[0035]
In the present embodiment, the pilot cap 54 and the resin tube 56 are made of resin mixed with conductive material such as carbon fiber and made of resin. On the other hand, at the distal end portion of the resin-coated tube 50, there is no resin film on the end surface of the raw tube 11, and a metal surface, a plating layer, or the like is exposed as a conductive portion. Therefore, if the pilot cap 54 is attached to the distal end portion of the resin-coated tube 50, the end surface of the raw tube 11 comes into contact with the pilot cap 54, and the path leading to the conductive resin tube 56 with the pilot cap 54 in the middle. When the resin tube 56 is fixed to the vehicle body by the clamp 12 described in the first embodiment, for example, static electricity generated in the resin-coated tube 50 is clamped through the pilot cap 54 and the resin tube 56. 12 can escape to the body.
[0036]
Moreover, according to the present embodiment, it is possible to simply connect the resin tube 56 without press-fitting simply by press-fitting the resin tube 56, and without particularly necessary parts for grounding. Can be.
[0037]
Next, FIG. 5 is a longitudinal sectional view showing another example of the configuration of the antistatic structure of the fuel tube according to the third embodiment.
In the configuration example of FIG. 5, similarly to the configuration example of FIG. 4, the cylindrical portion 54a and the tapered portion 54b are integrally formed in the pilot cap 55 using a conductive resin as a material. In the pilot cap 55, as shown in FIG. 6A, a short cylindrical contact guide portion 57 is formed concentrically inside the cylindrical portion 54a as a structure not included in the pilot cap 54 of FIG. ing. The outer diameter of the contact guide 57 is substantially the same as the inner diameter of the resin-coated tube 50. Further, as shown in FIG. 6B, the contact guide portion 57 may be a short cylindrical member having a taper.
[0038]
In the pilot cap 55, an annular groove is formed between the cylindrical portion 54 a and the contact guide portion 57 so that the distal end portion of the resin-coated tube 50 fits exactly.
[0039]
As shown in FIG. 7, at the distal end of the resin-coated tube 50, the end face of the raw tube 11 is exposed as a conductive portion 58 without being covered with the resin coating 48 like the outer peripheral surface. Are in contact with the contact portion 59 on the bottom surface of the groove between the cylindrical portion 54a of the pilot cap 55 and the contact guide portion 57.
[0040]
According to the configuration example of FIG. 5 described above, when the pilot cap 55 is put on the distal end of the resin-coated tube 50, the distal end of the resin-coated tube 50 is drawn into the contact portion 59 of the pilot cap 55 by the contact guide portion 57. As a result, the contact state in which the conductive portion 58 on the end face of the raw tube 11 abuts against the contact portion 59 can be ensured. When the resin tube 56 is press-fitted into the pilot cap 55, the path leading to the conductive resin tube 56 with the pilot cap 50 interposed is electrically conducted. For example, the clamp 12 described in the first embodiment may be used. When the resin tube 56 is fixed to the vehicle body by the above, static electricity generated in the resin-coated tube 50 can be released from the clamp 12 to the vehicle body through the pilot cap 55 and the resin tube 56.
[0041]
Next, FIG. 8 shows another configuration example of the pilot cap. In this pilot cap 70, a plurality of protrusions 72 functioning as contact guides are provided at predetermined intervals in the circumferential direction inside the cylindrical portion 54a. These protrusions 72 protrude from the contact portion 59 so that a gap is formed between the protrusion 72 and the inner peripheral surface of the cylindrical portion 54 so that the distal end of the resin-coated tube 50 fits. With such a protrusion 72, the distal end of the resin-coated tube 50 is drawn into the contact portion 59, and the conductive portion 58 on the end face of the raw tube 11 can be brought into contact with the contact portion 59 for reliable contact.
FIG. 9 shows still another configuration example of the pilot cap. In the pilot cap 74, a plurality of ridges 75 are formed on the inner peripheral surface of the cylinder 54a so as to extend in the axial direction. In this configuration example, these ridges 75 are triangular prism-shaped ridges having ridges 75a that are sharply formed. The height h of the ridge portion 75 is higher than the thickness of the resin film 48 covering the outer peripheral surface of the raw tube 11 of the resin-coated tube 50.
[0042]
When the pilot cap 74 as described above is put on the distal end of the resin-coated tube 50, the pilot cap 74 applies the resin coating 48 covering the outer periphery of the base tube 11 of the resin-coated tube 50 at the ridge 75 a of the ridge 75. It is fitted into the resin-coated tube 50 while being cut. Then, when the pilot cap 75 is completely fitted into the resin-coated tube 50, the conductive portion 58 on the end face of the raw tube 11 comes into contact with and contacts the contact portion 59. In addition, the ridges 75a of the ridges are in contact with conductive parts such as the metal surface of the raw tube 11 of the resin-coated tube 50 and a plating layer. Therefore, when the resin tube 56 is press-fitted into the resin-coated tube 50 with the pilot cap 74 as a guide, the resin tube 56 is reliably electrically connected to the resin-coated tube 50 with the pilot cap 55 being intermediate.
[0043]
Fourth Embodiment FIGS. 10 to 12 show an antistatic structure for a fuel tube according to a fourth embodiment of the present invention.
The fourth embodiment is an embodiment in which an antistatic structure using a conductor provided with a protrusion is provided on the resin-coated tube 60.
[0044]
In FIG. 10A, reference numerals 61a and 61b denote stays made of a resin to which conductivity is added. The stays 61a and 61b are formed by dividing a rectangular stay into two parts and welding the resin-coated tube 60 therebetween. A sharp projection 62 is formed on the inner surface of one of the stays 61a.
[0045]
As shown in FIG. 10B, the stays 61a and 61b have an integral structure by welding the inner surfaces of the stays 61a and 61b to a resin film covering the resin-coated tube 60 by an ultrasonic welding method. Therefore, as the resin material of the stays 61a and 61b, a resin having a higher melting point than the resin of the resin film material is used.
When the stays 61a and 61b are welded, the protrusion 62 penetrates the resin coating 13 and comes into contact with a conductive portion that is electrically connected to the base tube 11 of the resin-coated tube 60. Therefore, the resin-coated tube 60 is electrically connected to the stays 61a and 61b, which are conductors, via the protrusions 62, so that the stays 61a and 61b are fixed to the vehicle body using a clamp member such as a metal bracket. If this is done, grounding can be performed simultaneously with the fixing, and static electricity generated in the resin-coated tube 60 can be released.
[0046]
Next, FIG. 11 shows another configuration example of the conductor. In this configuration example, the conductor is composed of a stay 64 made of a resin having conductivity added thereto and a clip 65 made of a thin metal plate. A projection 65 is formed on the clip 65. ,
When the stay 64 is formed by injection molding, the clip 65 is wound around the resin-coated tube 60 and put into a mold, and the resin is injected to form a molded product integrally with the clip 65. At this time, the projecting portion 66 penetrates the resin coating 13 on the surface of the resin-coated tube 60 and comes into contact with a conductive portion that is electrically connected to the base tube 11 of the resin-coated tube 60. If it is fixed to the vehicle body using a clamp member such as a bracket, grounding can be performed at the same time as fixing, and static electricity generated in the resin coating tube 60 can be released.
[0047]
FIG. 12 shows still another configuration example of the conductor. The clip 65 is wound around a portion of the resin-coated tube 60 from which the resin coating has been peeled off, and is made of resin having conductivity added so as to cover the clip 65, and is subjected to injection molding in which a resin cylindrical portion 67 is covered using a mold. Do. The outer diameter of the resin cylindrical portion 67 is preferably the same as the outer diameter of the resin-coated tube.
[0048]
In the same manner as in the configuration example of the conductor of FIG. 11, the protrusion 66 penetrates the resin coating from the surface of the resin-coated tube 60 and comes into contact with a conductive portion electrically connected to the base tube of the resin-coated tube 60. Therefore, if the vehicle is fixed to the vehicle body using the clamp 12 shown in the first embodiment, grounding can be performed simultaneously with the fixing.
[0049]
【The invention's effect】
As is clear from the above description, according to the present invention, the antistatic structure of the fuel tube is configured so that the number of parts can be reduced and the tube can be easily attached to the vehicle body with one touch and grounded at the same time. can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an antistatic structure of a fuel tube according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the antistatic structure of FIG.
FIG. 3 is a longitudinal sectional view showing an antistatic structure of a fuel tube according to a second embodiment of the present invention.
FIG. 4 is a longitudinal sectional view showing an antistatic structure of a fuel tube according to a third embodiment of the present invention.
FIG. 5 is a longitudinal sectional view showing another configuration example of the antistatic structure of the fuel tube according to the third embodiment of the present invention.
FIG. 6 is a partially cutaway perspective view of a pilot cap used in the antistatic structure of FIG. 5;
FIG. 7 is an enlarged view of a main part of the antistatic structure of FIG. 5;
FIG. 8 is a partially cutaway perspective view of a pilot cap according to another configuration example used in the antistatic structure of FIG. 5;
FIG. 9 is a partially cutaway perspective view of a pilot cap according to still another configuration example used in the antistatic structure of FIG. 5;
FIG. 10 is an explanatory view of a structure for preventing electric discharge of a fuel tube according to a fourth embodiment of the present invention.
FIG. 11 is a cross-sectional view showing another configuration example of the antistatic structure of the fuel tube according to the fourth embodiment of the present invention.
FIG. 12 is a partially cutaway perspective view showing still another example of the configuration of the antistatic structure of the fuel tube according to the fourth embodiment of the present invention.
FIG. 13 is a perspective view showing a conventional antistatic structure of a fuel tube.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Resin-coated tube 11 Element tube 12 Clamp 13 Resin film 14 Convex part 16 Heat-shrinkable tube 17 Main part of clamp 20 Claw 30 Resin-coated tube 32 Quick connector 36 a Conductive O-ring 37 Spool part 38 Retainer 50 Resin-coated tube 54 Conductive Pilot cap 57 contact guide

Claims (10)

An antistatic structure of a fuel tube which is formed of a resin-coated tube in which an outer peripheral portion of a metal pipe is coated with a non-conductive resin film and is piped to a vehicle body of an automobile,
A conductive heat-shrinkable tube is adhered to the resin-coated tube so as to cover a portion where the resin coating of the resin-coated tube is peeled off, and the conductive heat-shrinkable tube is attached to and detached from the resin-coated tube by a detachable clamp member made of a conductive material. Wherein the pipe made of the resin-coated tube is fixed to the vehicle body while holding the above-mentioned portion. The charging of the fuel system tube according to claim 1, wherein the resin-coated tube has a convex portion formed at a portion where the resin film is peeled off, and the clamp member has a concave portion for receiving the convex portion. Prevention structure. The antistatic structure for a fuel system tube according to claim 1 or 2, wherein the clamp member is a stud-shaped clamp member having a stud bolt insertion opening for screwing into a bolt on the vehicle body side on a bottom surface thereof. A resin tube is connected via a resin quick connector to the end of a resin-coated tube in which the outer periphery of a metal tube is coated with a non-conductive resin film. An antistatic structure,
The main body of the quick connector is formed of a conductive resin, and a portion exposing the conductive portion which is separated from the resin coating and is electrically connected to the base tube is provided at a terminal portion of the resin-coated tube. An antistatic structure for a fuel system tube, wherein a gap between an inner diameter portion of the quick connector and the terminal portion is sealed by a ring, and the quick connector is fixed to a vehicle body by a clamp member made of a conductive material. An automobile body comprising at least one spool portion formed at a terminal portion of a resin-coated tube in which an outer peripheral portion of a metal tube is coated with a non-conductive resin film, and the resin tube is press-fitted to the terminal portion. An antistatic structure of a fuel tube to be piped to
Attach a pilot cap made of a conductive resin to the end of the terminal portion of the resin-coated tube, press-fit the resin tube made of the conductive resin into the resin-coated tube, and clamp the resin tube made of the conductive material. An antistatic structure for a fuel tube, wherein the structure is fixed to a vehicle body with a member. The terminal end of the resin-coated tube serves as a conductive portion, and the pilot cap is provided integrally with a contact guide portion for drawing the conductive portion of the resin-coated tube into a contact portion with the pilot cap. The antistatic structure for a fuel tube according to claim 5. When the terminal portion of the resin-coated tube is press-fitted into the pilot cap, a ridge that comes into contact with a conductive surface on the outer periphery of the base tube while cutting the resin film is formed on the inner peripheral surface of the pilot cap. Item 6. An antistatic structure for a fuel tube according to Item 5. An antistatic structure of a fuel tube which is formed of a resin-coated tube in which an outer peripheral portion of a metal pipe is coated with a non-conductive resin film and is piped to a vehicle body of an automobile,
A conductor made of a conductive material having a protrusion having a contact portion and a conductive portion that pierces the resin coating of the resin-coated tube and conducts with the raw tube,
A clamp member made of a conductive material, for fixing the conductor to a vehicle body,
An antistatic structure for a fuel tube, comprising: 9. The fuel tube according to claim 8, wherein the conductor is made of a two-part stay that is made of a resin material having a higher melting point than the resin material of the resin film and is welded to the resin coated tube. Antistatic structure. The electric conductor comprises a clip made of a metal material and wound around the resin-coated tube and having the protrusion, and a conductive resin body integrally molded so as to cover the clip. Item 9. An antistatic structure for a fuel tube according to Item 8.

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