JP2001260666A - Anti-static device for conductive resin tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-static device capable of being easily assembled and ensuring the conduction to dissipate static electricity. SOLUTION: This anti-static device is provided with a connector 11 inserted into an edge inner periphery of a conductive resin tube 99 having the conductivity at least on its inner periphery, at its one end and connected to another tube 98 at the other end, the connector 11 is provided with an electrically conducting path from the inner periphery of the conductive resin tube 99 to the outside of the connector 11, and a conducting means is mounted for conducting the conducting path to a car body. The conducting means is composed of, for example, a mounting basic part 34 extended from the conductive connector 11, a strut 35 projecting from a tip part of the mounting basic part 34, and a clip 36 mounted on the strut 35, and the clip 36 is fitted to a mounting hole 53 of a car body panel 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic device for preventing a conductive resin tube used for, for example, a fuel pipe of an automobile from being charged.

[0002]

2. Description of the Related Art Conventionally, a metal tube and a rubber tube are used in combination in a fuel pipe of an automobile. This is because the vibration of the engine cannot be absorbed by the metal tube alone, and the degree of freedom of the piping around the fuel tank is reduced.

However, rubber tubes have insufficient impermeability to gasoline used as automobile fuel,
It was unfavorable for safety and environment. Further, the rubber tube is heavy and difficult to handle, and when connected, it is necessary to extrapolate to the end of the counterpart tube and tighten it with a hose band.

In recent years, attempts have been made to use a resin tube instead of the rubber tube. According to this resin tube, it is excellent in impermeability to gasoline, and it is lighter than a rubber tube. Also, since the resin tube can be connected by welding or the like,
By connecting the connector to the end, it can be connected to the metal tube with one touch, and is excellent in handleability.

[0005] However, when fuel flows into the resin tube, there is a problem that static electricity is easily generated on the contact surface between the fuel and the resin tube, and the resin tube is easily charged. When the resin tube is charged, sparks are generated on the surface of the resin tube, and the spark may cause a hole in the resin tube to cause breakage, which hinders securing of safety.

In order to prevent such charging of the fuel pipe, for example, Japanese Unexamined Patent Application Publication No. 11-280580 discloses a pipe system for connecting an engine and a fuel tank. Is connected to a fuel pipe having a resin coating layer on an outer peripheral surface through a joint and a resin tube, the fuel pipe is electrically connected to at least one of an engine-side pipe or a fuel tank-side pipe. An automotive fuel piping system, which is connected so as to conduct, is disclosed.

Japanese Utility Model Application Laid-Open No. 7-5299 discloses a nylon fuel filler hose for connecting a fuel tank nipple and a fuel filler neck with a conductive heat-shrinkable rubber-like tube. An antistatic device has been disclosed in which a static electricity generated in a fuel filler hose is released by connecting the fuel filler hose to a vehicle body with a ground wire.

[0008]

However, in the fuel pipe system disclosed in Japanese Patent Application Laid-Open No. H11-280580, the fuel pipe is electrically connected to at least one of the engine side pipe and the fuel tank side pipe through a plurality of connectors. Since the connection is made to be conductive, if a connection failure occurs at any of the multiple joints, static electricity cannot be released, and the work of assembly and testing must be strict. Was.

In the antistatic device disclosed in Japanese Utility Model Laid-Open No. 7-5299, a metal plate embedded in a rubber-like tube and a vehicle body are connected to each other by an appropriate ground wire, and a special structure for achieving conduction is provided. Because it is necessary to provide the tube itself, there is a problem that the assembling workability is poor and the versatility is poor. Furthermore, since the inner nylon fuel filler hose is not conductive, there is a problem that static electricity is easily generated and the generated static electricity is hard to move to the outer rubber tube.

Accordingly, an object of the present invention is to provide an antistatic device for preventing a conductive resin tube used for a fuel pipe or the like of an automobile from being charged. To ensure that electrical conduction is ensured.

[0011]

In order to achieve the above object, a first aspect of the present invention is an antistatic device for a conductive resin tube having a conductive inner periphery. A connector, one end of which is inserted into the connector and the other end of which is connected to another tube. The connector has an electrical conduction path extending from the inner periphery of the conductive resin tube to the outside of the connector, and It is an object of the present invention to provide an antistatic device for a conductive resin tube, wherein a grounding means for conducting to a vehicle body is provided.

According to the first aspect, when the conductive resin tube is connected to another tube via the connector, conduction is performed from the inner periphery of the conductive resin tube to the outside of the connector by the conduction path, and By conducting the conducting portion of this connector to the vehicle body, the conductive resin tube can be grounded, and the assembling workability is good.

Further, since static electricity in the fuel pipe and the like is generated on the inner peripheral surface of the conductive resin tube, the static electricity can be satisfactorily released by conducting from the inner peripheral surface of the conductive resin tube. Since the conductive portion of the connector is connected to the vehicle body and grounded, the conductive path for grounding is shortened, and connection failure is less likely to occur.

According to a second aspect of the present invention, in the first aspect, the grounding means is formed of a conductive clip connected to the connector and fitted into a mounting hole of the vehicle body. An object of the present invention is to provide an antistatic device for a resin tube.

According to the second aspect, the conductive resin tube is connected by the connector, and the clip connected to the connector is simply fitted into the mounting hole of the vehicle body.
The inner periphery of the conductive resin tube can be grounded, and the assembling workability is further improved.

According to a third aspect of the present invention, in the first or second aspect, the connector has a cylindrical main body, one end of which is inserted into the main body, and the other end of which is an end of the conductive resin tube. An inner cylinder inserted into the inner periphery of the main body, wherein the inner cylinder has conductivity, and the main body is provided with a conductive portion that contacts the inner cylinder and extends to the outside of the main body. An object of the present invention is to provide an antistatic device for a conductive resin tube.

According to the third aspect of the invention, the connector body and the conductive resin tube are connected via the conductive inner cylinder. It can be applied to various kinds of conductive resin tubes, and versatility is enhanced. Further, by providing a clip-type engagement structure between the connector main body and the inner cylinder, the connection of the conductive resin tube can be performed with one touch.

According to a fourth aspect of the present invention, in the third aspect, the inner cylinder has a flange portion in the middle, and the grounding means has an annular portion at one end and a fixing portion at the other end to the vehicle body. The inner cylinder is inserted into the annular portion of the bracket, and the antistatic device for the conductive resin tube in which the annular portion is sandwiched between the flange portion and the connector body. To provide.

According to the fourth aspect, since the bracket is connected to the connector by externally inserting the annular portion of the bracket into the inner cylinder, the bracket can be rotated around the inner cylinder as a support shaft, and the bracket is fixed. The part can be easily directed to the mounted part of the vehicle body. Further, even if the vehicle model is different, it can be dealt with only by replacing the bracket, and the versatility of the connector can be improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The conductive resin tube applied to the present invention is not particularly limited as long as it has at least an inner periphery having conductivity, and its material and structure are not particularly limited. For example, as shown in FIG. A conductive resin tube is preferably employed. 3A is a cross-sectional view, and FIG. 3B is a perspective view.

The conductive resin tube 71 has an inner layer 72.
And an outer layer 73. The material of the inner layer 72 is preferably a resin having gasoline resistance and conductivity.
For example, a material obtained by dispersing a conductive material in a fluorine resin can be preferably used. Examples of the fluorine-based resin include polyvinylidene fluoride, polychlorotrifluoroethylene, a copolymer of ethylene and chlorotrifluoroethylene, a copolymer of ethylene and tetrafluoroethylene, and a copolymer of hexafluoropropylene and tetrafluoroethylene. Coalescence, fluorinated alkoxyethylene resin, polytetrafluoroethylene and the like can be used. Further, as the conductive material, for example, carbon black, fine stainless steel fiber, or the like can be used. At this time, the amount of the conductive material contained in the fluororesin is adjusted so that the electric resistance of the inner layer 72 is 10 ⁶ to 10 ⁹ (Ω).
It is preferable to adjust so that

The inner layer 72 may be formed by forming a conductive layer such as a metal foil on the inner periphery of a non-conductive resin tube.

As the material of the outer layer 73, a non-conductive resin having excellent rigidity is preferably used. For example, nylon 6, nylon 11, nylon 12, nylon 610, nylon 61
2. A polyamide resin such as nylon 11 or a blend of nylon 12 and nylon 66 can be preferably used.

Further, an intermediate layer made of a resin which can be bonded to both may be provided between the inner layer 72 and the outer layer 73. Further, a multilayer structure of three or more layers can be used. However,
In the case of a multilayer structure, it is necessary that at least the innermost layer has conductivity.

This conductive resin tube is preferably used for a fuel pipe of an automobile as shown in FIG. 4, for example. The fuel pipe shown in FIG. 4 includes a feed line 87 and a return line 93. The feed line 87 is a pipe for supplying fuel from the fuel tank 91 to the engine 92. The feed line 87 includes three tubes 88, 89, and 90 sequentially connected via the connector 11 from the fuel tank 91 to the engine 92. It is configured. A filter 97 is provided in the feed line 87 in the middle of the tube 97 so that impurities such as dust contained in the fuel supplied to the engine 92 are removed. The return line 93 is a pipe for returning surplus fuel not consumed by the engine 92 to the fuel tank 91. The return line 93 is composed of three tubes 96, 95, 94 that are sequentially connected via the connector 11 from the engine 92 to the fuel tank 91.

Of the tubes 88 and 94 connected to the fuel tank 91, the pipes at the time of connection are provided with flexibility so that they can be easily routed. Preferably, the conductive resin tube is used to absorb engine vibration. Metal tubes are preferably used for the tubes 89 and 95 disposed between the lines 87 and 93 in order to provide strength against stepping stones during traveling.

The present invention provides a device for preventing static electricity by connecting a conductive resin tube used for the above-mentioned applications to the vehicle body at the connector 11 and grounding it. .

FIGS. 1 and 2 show an embodiment of an antistatic device for a conductive resin tube according to the present invention. FIG. 1 shows a connector used in the antistatic device,
(A) is sectional drawing which shows the state which attached the same connector to the vehicle body, (b) is a perspective view which shows the state which separated the connector main body and the inner cylinder. 2A and 2B show a fixing portion of the connector to the vehicle body, and FIG.
(B) is a partial sectional view showing a state before being attached to a vehicle body.

As shown in FIG. 1, this connector 11
It has a main body 12 and an inner cylinder 13. Main body 12
Has a cylindrical main body base 14. One end of the end base 14 has a connecting tube 1 inserted into the first tube 98.
5 are formed. The other end of the main body base 14 has an inner cylinder 1
An inner cylinder insertion hole 17 that receives one end of the opening 3 is opened, and a main body flange 16 is formed at the opening edge. Furthermore,
From a part of the peripheral wall of the main body base 14, a mounting base 34 and a support 35 extend in a direction perpendicular to the axis of the main body 14 and the connection pipe 15, and the support 35 is provided with a fixing portion 32 for the vehicle body panel 52. Is provided.

The connecting pipe portion 15 has a tapered portion 18 gradually increasing in diameter from the distal end to the proximal end on the outer periphery of the distal end portion, and a seal ring 23 is fitted on the proximal end side of the tapered portion 18. A seal ring groove 19 is formed, and a stopper 20 is further formed on the base end side of the seal ring groove 19. The stopper 20 includes a plurality of annular projections formed at predetermined intervals on the outer periphery of the connection pipe 15, and the surface of the annular projection facing the distal end of the connection pipe 15 faces the base end. The connecting pipe portion 15 has a taper 21 whose diameter gradually increases, and a surface facing the proximal end side of the connecting pipe portion 15 forms a step 22, and has a bamboo shoot shape as a whole. Therefore, when the connecting pipe portion 15 is inserted into the inner circumference of the end of the first tube 98, the tapered portion 1
8 and the taper 21 make it easy to insert at the time of insertion, and after the insertion, it engages at the step 22 of the stopper 20 and becomes difficult to come off.

The connection pipe 15 communicates with the inner cylinder insertion hole 17 of the main body base 14. The inner cylinder insertion hole 17 is
3 has a portion whose diameter is enlarged to an inner diameter larger than the outer diameter of the insertion portion 50, and an annular locking member 25 is inserted into the enlarged diameter portion. A seal ring 30, 3, is provided between the distal end of the locking member 25 and the end of the enlarged diameter portion of the inner cylinder insertion hole 17.
1 is interposed, and seals between the insertion portion 50 of the inner cylinder 13 and the main body base 14.

The locking member 25 has a pressing piece 24 extending outward at two opposite locations on the outer circumference, and a fitting projecting outward from a part 90 degrees away from the pressing piece 24. And a mating projection 28. The holding piece 24 protrudes from the opening 14 a of the main body base 14 toward the base side of the main body base 14, and the fitting projection 28 is formed in another opening 14 b of the main body base 14.
Is fitted.

On the inner periphery of the locking member 25, an annular groove 54 is formed in which the annular convex portion 51 of the inner cylinder 13 is fitted. Further, when the locking member 25 moves to the opening side of the inner cylinder insertion hole 17, the distal end portion 26 of the locking member 25
When the locking member 25 is located at the back of the inner cylinder insertion hole 17, the diameter can be increased through the opening 14a apart from the main body flange 16.

Therefore, when the insertion portion 50 of the inner cylinder 13 is inserted into the inner cylinder insertion hole 17 of the main body base 14, the locking member 2
5 moves to the back of the inner cylinder insertion hole 17, so that the locking member 2
5 is separated from the body flange 16 and the tip 2
6 can be expanded through the opening 14a. As a result, the annular projection 51 of the inner cylinder 13 is fitted into the annular groove 54.

Next, when the inner cylinder 13 is pulled in the pulling-out direction in the above state, the locking member 25 into which the annular convex portion 51 of the inner cylinder 13 is fitted is pulled in the same direction, and the distal end portion 26 is moved to the main body flange. 16 and cannot be expanded in diameter. As a result, the annular projection 51 of the inner cylinder 13 fitted in the annular groove 54 cannot escape from the fitting groove 54, and is prevented from falling out.

On the other hand, when the inner cylinder 13 is pulled in the pulling-out direction while holding the holding member 24 by hand and holding the engaging member 25 at a position moved to the back of the inner cylinder insertion hole 17, the engaging member 25 is pulled. Of the inner cylinder 13 is disengaged from the fitting groove 54, and the inner cylinder 13 can be pulled out from the inner cylinder insertion hole 17 of the main body base 14.

As shown in FIG. 1 and FIG.
Is a cylindrical mounting base 34 connected to the main body base 14.
And a support 3 further extended from the tip of the mounting base 34.
5 and a mounting skirt 33 extending in a skirt shape is formed at the boundary between the two. Furthermore, on the support 35,
A clip 36 made of a metal plate is attached.

The clip 36 is formed of an elongated metal plate substantially U-shaped.
An inclined portion 38 which is formed by bending in a shape of a letter and which is inclined so as to open from the bent portion, a horizontal portion 39 which is formed by bending inward from the end portion, and further bent vertically from the horizontal portion 39 And a front end portion 40. Furthermore,
In the middle of the inclined portion 38, a stop piece 41 cut and raised inward is formed.

A groove 4 is formed in a pair of opposing surfaces of the column 35.
2, and an inclined surface 43 is formed on the other pair of opposing surfaces. The clip 36 has a central portion 37 in contact with an end surface of the support post 35 and an end portion of the stopper 41
2 and is fixed so as not to come off the support 35.

As shown in FIG. 2B, the edge of the mounting flange 33 is inclined toward the projecting direction of the support post 35, and has an umbrella shape as a whole. And FIG.
As shown in (a), when the fixing portion 32 is inserted into the mounting hole 53 of the vehicle body panel 52, the mounting flange 33 is
It comes into close contact with the three peripheral portions.

The inner cylinder 13 is made of a conductive material such as metal or conductive resin, has a flange 44 in the middle, and a portion extending from the flange 44 to one end is connected to the connecting pipe portion 4.
5 and the part from the flange 44 to the other end is
The insertion portion 50 is provided. The connection pipe part 45 has a bamboo shoot shape like the connection pipe part 15 of the main body part 12. That is, the connection pipe portion 45 has a tapered portion 46, a seal ring groove 47, and a stopper 48 from the tip side thereof, and a seal ring 49 is fitted in the seal ring groove 47. Therefore, when the connection tube portion 45 is inserted into the inner periphery of the end of the second tube 99, both are hermetically sealed by the seal ring 49, and are prevented from coming off by the stopper 48. On the other hand, the insertion portion 50 of the inner cylinder 13
As described above, the inner cylinder insertion hole 17 of the front body base 14 is
A portion to be inserted and connected to the annular convex portion 5 described above.
One.

The first tube 98 and the second tube 9
At least one of 9 is constituted by the above-mentioned conductive resin tube. The first tube 98, the second tube 99, and the connector 11 for connecting them constitute the antistatic device of the present invention.

Next, the operation of the antistatic device of the present invention will be described. First, one of the two tubes (here, the first tube 9) connected via the connector 11 is connected.
8), the connecting pipe part 15 of the main body part 12 is inserted,
The main body 12 is connected to the first tube 98. When the connection pipe 15 is inserted into the first tube 98, the taper portion 18 and the taper 21 of the stopper 20 guide the connection pipe 15 in the insertion direction, so that the connection pipe 15 can be easily inserted. Further, after the insertion, the inner surface of the first tube 98 and the outer periphery of the connection tube portion 15 come into close contact with each other by the contraction force of the first tube 98, and the stopper 20 bites into the inner wall of the first tube 98. Thereby, the first tube 98 is prevented from coming off from the connection tube portion 15. Also, the first tube 9
8 and the connecting pipe portion 15 come into contact with each other and become electrically conductive. Further, the inner surface of the first tube 98 and the outer periphery of the connection tube portion 15 are hermetically sealed by the seal ring 23, so that leakage of fuel therefrom is prevented.

Subsequently, the connecting tube portion 45 of the inner tube 13 is inserted into the other tube (referred to as the second tube 99), and the inner tube 13 is connected to the second tube 99. In this case, as in the case of the first tube 98, the inner surface of the second tube 99 and the outer periphery of the connection tube portion 45 are in close contact with each other by the contraction force of the second tube 99, and the retaining 48 is in the second position. By digging into the inner wall of the tube 99, the second tube 99 is prevented from coming off from the connection pipe portion 45. Also,
The inner surface of the second tube 99 and the connection tube portion 45 come into contact with each other and become electrically connected. Further, the seal ring 49
Thereby, the inner surface of the second tube 99 and the outer periphery of the connection pipe portion 45 are hermetically sealed to prevent leakage of fuel therefrom.

After the inner tube 13 is connected to the second tube 99, the insertion portion 50 of the inner tube 13 is inserted into the inner tube insertion hole 17 of the main body 12, and the main body 12 is connected to the main body 12 by the mechanism described above. The inner cylinder 13 is connected. At this time, since the annular convex portion 51 of the inner cylinder 13 is fitted and abutted on the fitting groove 54 of the locking member 25, the inner cylinder 13 and the main body 12 are electrically connected. The gap between the inner cylinder 13 and the main body 12 is hermetically sealed by the seal rings 30 and 31 to prevent fuel from leaking therefrom.

When the first tube 98 and the second tube 99 are thus connected via the connector 11, the fixing portion 32 is fitted into the mounting hole 53 of the vehicle body panel 52, and the connector 11 is fixed to the vehicle body panel 52. . That is, when the fixing portion 32 is inserted into the mounting hole 53, first, the clip 36
The inclined portion 38 of the horizontal portion 39 is bent by being pushed by the mounting hole 53.
When it comes out of the mounting hole 53, it returns to its original shape by the elastic force. Then, the distal end portion 40 is pressed against the inner periphery of the mounting hole 53, the horizontal portion 39 is engaged with one surface of the peripheral edge of the mounting hole 53, and the mounting flange 33 is engaged with the other surface of the peripheral edge of the mounting hole 53. Therefore, the connector 11 is fixed to the vehicle body panel 52 by sandwiching the peripheral edge of the mounting hole 53 between the horizontal portion 39 and the mounting flange 33.

The fixing portion 32 of the connector 11 may be fixed to the vehicle body panel 52 in advance, and the first tube 98 and the second tube 99 may be connected via the connector 11 in this state.

When the connector 11 is fixed to the vehicle body panel 52, the mounting flange 33 is in contact with the peripheral edge of the mounting hole 53, the horizontal portion 39, and the distal end portion 40 pressed against the inner periphery of the mounting hole 53. Connector 11 is electrically connected to vehicle body panel 52. As a result, the inner peripheral surfaces of the first tube 98 and the second tube 99 connected via the connector 11 are electrically connected to the vehicle body panel 52 and are grounded by the vehicle body panel 52.

Therefore, when fuel flows through the pipe consisting of the first tube 98 and the second tube 99 connected via the connector 11, and static electricity is generated inside the pipe,
Static electricity generated on the inner surface of the first tube 98 is released to the fixing portion 32 via the connection tube portion 15 and the main body base portion 14,
The static electricity generated on the inner surface of the second tube 99 is
3, the connection pipe part 45, the insertion part 50 of the inner cylinder 13, and the main body base part 1.
4 is released to the fixing portion 32 through the reduced diameter portion 54 and the main body base portion 14. The static electricity is released to the vehicle body panel 52 through the place where the electric resistance is the smallest among the mounting flange 33, the horizontal part 39, and the tip part 40 of the fixing part 32. Second tube 9
9 can be prevented from being charged.

FIG. 5 shows the connector 1 in the above embodiment.
FIG. 8 shows another embodiment in which a cap is placed on the fixing portion 32 of FIG. 1, and FIG.
(B) is sectional drawing of the state before being attached to a vehicle body panel.

In this embodiment, a cap 55 made of a resin film is covered so as to surround the clip 36.
Therefore, the periphery of the mounting hole 53 of the vehicle body panel 52, the clip 36, etc.
3 so that dust and rainwater hardly enter into them, thereby maintaining good conductivity and enhancing the rust prevention effect.

FIG. 6 shows another embodiment of the antistatic device for a conductive resin tube according to the present invention. FIG.
Indicates a connector used in the antistatic device, and (a)
FIG. 3 is a cross-sectional view of a state in which it is attached to a vehicle body panel, and FIG. Note that, in the following description of the embodiment, the same reference numerals are given to substantially the same portions as the above embodiment, and the description thereof will be omitted or simplified.

As shown in FIG. 6, this connector 61
It has a main body 12b and an inner cylinder 13b. The main body 12b is different from the main body 12 of the embodiment in that the fixing portion 32 is not formed. Also, the inner cylinder 13b
In the embodiment, the distance between the annular convex portion 51 and the flange 44 is increased in the inner cylinder 13 of the embodiment.

In this embodiment, the connector 61
A bracket 62 is attached to the vehicle body 52, and is fixed to the vehicle body panel 52 via the bracket 62.
The bracket 62 is attached to the fixing portion 32 with respect to the vehicle body panel 52.
At one end and connected to the connector 61
3 at the other end.

The annular portion 63 is inserted into the insertion portion 5 of the inner cylinder 13b.
It has an insertion hole 64 into which 0 is inserted. This insertion hole 6
4 is an annular convex portion 5 formed on the insertion portion 50 of the inner cylinder 13b.
1 and an inner diameter smaller than the outer diameter of the flange 44 of the inner cylinder 13b.

Therefore, in this embodiment, the insertion portion 50 of the inner cylinder 13b connected to the second tube 99 is passed through the insertion hole 64 of the bracket 62, and then the main body portion connected to the first tube 98. The main body 12b and the inner cylinder 13b are connected by being inserted into the inner cylinder insertion hole 17 of the inner cylinder 12b. Then, the annular portion 63 of the bracket 62 is sandwiched between the flange 44 of the inner cylinder 13b and the main body flange 16 of the main body 12b, so that the main body 12b, the bracket 62, and the inner cylinder 13b are integrally connected to each other. Fixing part 3 of 62
2 into the mounting hole 53 of the vehicle body panel 52 and the connector 6
1 can be fixed to the vehicle body panel 52.

At this time, the bracket 62 is attached to the inner cylinder 13b.
Can be turned around, so that the fixing portion 32 can be easily directed toward the mounting hole 53 of the vehicle body panel 52,
Mounting work becomes easy.

When the connector 61 is attached to the vehicle body panel 52, the main body 12b is electrically connected to the annular portion 63 via the main body flange 16. On the other hand, the inner cylinder 13 b is electrically connected to the annular portion 63 via the flange 44. Therefore, the first tube 98 and the second tube 99 are electrically connected to the vehicle body panel 62 via the connector 61 and the bracket 62, and are grounded through the vehicle body panel 62.

Therefore, when fuel flows through the pipe consisting of the first tube 98 and the second tube 99 connected via the connector 61 and static electricity is generated inside the pipe,
The static electricity generated on the inner surface of the first tube 98 is released to the annular portion 63 via the connection tube portion 15 and the main body base portion 14,
The static electricity generated on the inner surface of the second tube 99 is released to the annular portion 63 via the connection pipe 45 and the flange 44.

The static electricity is transferred from the annular portion 63 via the fixing portion 32 to the mounting flange 33, the horizontal portion 39,
Since the gas is released to the vehicle body panel 52 through the portion of the distal end portion 40 where the electric resistance is minimized, it is possible to prevent charging of the pipe including the first tube 98 and the second tube 99.

It is to be noted that the bracket 62 is attached to the vehicle body panel 5 in advance.
2, the bracket 62 may be connected to the connector 61 when the first tube 98 and the second tube 99 are connected via the connector 61.
In that case, the bracket 62 is attached to the mounting hole 5 of the vehicle body panel 52.
It is preferable that the direction of the annular portion 63 be adjusted by rotating about the center 3.

FIG. 7 shows still another embodiment of the antistatic device for a conductive resin tube according to the present invention.
FIG. 7 is a sectional view showing a state in which a connector used in the antistatic device is attached to a vehicle body panel.

The connector 65 is different from the connector 11 of the above embodiment in that the main body 12 has no conductivity, and the non-conductive main body 12 further includes
A metal core 66 penetrating the mounting base 34 and the main body base 14 is inserted. A hole 66a is formed at one end of the metal core 66.
The hole 66a is inserted into the main body base 14 so that the hole 66a communicates with the passage of the main body base 14.
The periphery of the hole 66a is exposed at the end face of the reduced diameter portion 56 of the inner cylinder insertion hole 17, and the inner cylinder 13 is
When the main body 12 and the inner cylinder 13 are connected to each other,
The end surface of the inner cylinder 13 is in contact with the metal core 66. Further, the metal core 66 is also in contact with the central portion 37 of the clip 36 and the end face of the stopper 41 of the inclined portion 38 in the fixing portion 32.

When the first tube 98 and the second tube 99 are connected via the connector 65 and the connector 65 is fixed to the vehicle body panel 52, the second tube 99 is The metal core 66 is electrically connected to the clip 36, and the metal core 66 is electrically connected to the clip 36. Further, the clip 36 is in contact with the horizontal portion 39 that is in contact with the peripheral edge of the mounting hole 53, and the tip portion that is pressed against the inner circumference of the mounting hole 53. Through 40,
It is electrically connected to the vehicle body panel 52.

Therefore, when static electricity is generated inside the second tube 99, the static electricity is released to the metal core 66 via the inner tube 13, and further released from the metal core 66 to the clip 36. The clip 36 is released to the vehicle body panel 52. On the other hand, the static electricity generated on the inner surface of the first tube 98 is released to the vehicle body panel 52 in the same manner as the second tube 99 by attaching the other end to the inner tube 13 of another connector 65. Therefore, it is possible to prevent electrification of the pipe including the first tube 98 and the second tube 99.

According to the connector 65, it is not necessary to impart conductivity to the main body 12, and the degree of freedom in selecting a molding material can be increased.

FIG. 8 shows still another embodiment of the antistatic device for a conductive resin tube according to the present invention.
FIG. 8 is a cross-sectional view showing a state in which a connector used in the antistatic device is grounded to a vehicle body panel.

The connector 67 is different from the connector 11 of the above embodiment in that the mounting flange 33, the support 35, and the clip 36 of the fixing portion 32 of the main body 12 are connected to the ground terminal 6.
8 is replaced. That is, one end of the conducting wire 57 is connected to a ground terminal 68 having one end embedded and fixed in a conductive resin constituting the connector 67, and the other end of the conducting wire 57 is screwed to the vehicle body panel 52 to connect the connector 67. It is electrically connected to the vehicle body panel 52.

According to the connector 67, the connector 67
Position and the position of the vehicle body panel 52 change,
7 can be dealt with only by changing the length, and the advantage that the restriction on the mounting location is reduced is obtained.

As shown in FIG. 9, an earth terminal 68 may be attached to the bracket 62 of the connector 61 of the embodiment shown in FIG.

As shown in FIG. 10, in the connector 65 of the embodiment shown in FIG. 7, an earth terminal 68 is attached so as to be electrically connected to the metal core 66.
8 may be electrically connected to the vehicle body panel 52 via the conducting wire 57.

[0072]

As described above, according to the present invention,
When the conductive resin tube is connected to another tube via the connector, conduction is performed from the inner periphery of the conductive resin tube to the outside of the connector by the conduction path, and the conduction portion of the connector is conducted to the vehicle body. Thereby, the conductive resin tube can be grounded, and the assembling workability is good. In addition, since static electricity of the fuel pipe and the like is generated on the inner peripheral surface of the conductive resin tube, by conducting from the inner periphery of the conductive resin tube, the static electricity can be satisfactorily released. Since the portion is electrically connected to the vehicle body and grounded, the conduction path for grounding is shortened, and connection failure is less likely to occur.

[Brief description of the drawings]

FIGS. 1A and 1B show a connector in an embodiment of a charging device according to the present invention, wherein FIG. 1A is a cross-sectional view showing a state where the connector is attached to a vehicle body panel, and FIG.

FIGS. 2A and 2B show a mounting portion of the connector, wherein FIG. 2A is a cross-sectional view of a state where the connector is mounted on a vehicle body panel, and FIG.

3A and 3B show an example of a conductive resin tube used in the present invention, wherein FIG. 3A is a sectional view and FIG. 3B is a perspective view.

FIG. 4 is a perspective view showing an example of a fuel pipe to which the antistatic device of the present invention is applied.

5A and 5B show another embodiment of the antistatic device of the present invention in which a cap is placed on a fixing portion of a connector, wherein FIG. 5A is a cross-sectional view of a state where the connector is attached to a vehicle body panel, and FIG. It is sectional drawing of the state before being attached.

6A and 6B show a connector in another embodiment of the antistatic device according to the present invention, wherein FIG. 6A is a cross-sectional view of a state where the antistatic device is attached to a vehicle body panel, and FIG. 6B is an exploded perspective view.

FIG. 7 is a cross-sectional view showing a state in which a connector in still another embodiment of the antistatic device according to the present invention is attached to a vehicle body panel.

FIG. 8 is a cross-sectional view showing a state in which a connector in still another embodiment of the antistatic device according to the present invention is grounded to a vehicle body panel.

FIG. 9 is a cross-sectional view showing a state in which a connector in still another embodiment of the antistatic device according to the present invention is grounded to a vehicle body panel.

FIG. 10 is a cross-sectional view illustrating a state in which a connector in still another embodiment of the antistatic device according to the present invention is grounded to a vehicle body panel.

[Description of Signs] 11, 61, 65, 67, 69, 70 Connector 12 Main body 13 Inner cylinder 15 Nozzle 17 Inner cylinder insertion hole 32 Fixed part 44 Flange 45 Connection pipe part 50 Insertion part 52 Body panel 53 Mounting hole 98 One tube 99 Second tube

Claims (4)

[Claims] 1. An antistatic device for a conductive resin tube having an inner periphery having conductivity, comprising a connector having one end inserted into the inner periphery of an end portion of the conductive resin tube and the other end connected to another tube. The connector is provided with an electrical conduction path extending from the inner periphery of the conductive resin tube to the outside of the connector, and grounding means for conducting the conduction path to the vehicle body. Antistatic device for resin tubes. 2. The antistatic device for a conductive resin tube according to claim 1, wherein the grounding means is constituted by a conductive clip which is connected to the connector and fits into a mounting hole of the vehicle body. 3. The connector has a cylindrical main body, and an inner cylinder having one end inserted into the main body and the other end inserted into an inner periphery of an end of the conductive resin tube. The antistatic device for a conductive resin tube according to claim 1 or 2, wherein the tube has conductivity, and the body portion is provided with a conductive portion that contacts the inner tube and extends to the outside of the body portion. . 4. The inner cylinder has a flange portion in the middle,
The grounding means includes a conductive bracket having one end forming an annular portion and the other end forming a fixed portion to the vehicle body. The inner cylinder is inserted into the annular portion of the bracket, and the annular portion is formed of the flange. The antistatic device for a conductive resin tube according to claim 3, wherein the antistatic device is sandwiched between a portion and the connector body.