JP4507638B2 - Conductive connector cover, conductive connector and conductive multilayer tube terminal structure - Google Patents

Description

  The present invention relates to a terminal structure in a multilayer tube used for fuel supply of an internal combustion engine, and the like, and a conductive connector cover and a conductive connector used in the terminal structure.

In recent years, resin tubes have been used as fuel piping for automobiles due to various advantages such as lighter weight, easier handling, and higher fuel impermeability than rubber tubes.
However, the resin tube has a problem that static electricity is easily generated on the contact surface with the fuel and the like, and is easily charged. A method of providing a conductive layer on the resin tube has been proposed in order to eliminate the static charge (for example, patent document). 1 and 2).
JP 2000-154890 A (page 4, Fig. 1-2) JP 2001-271971 A (page 3-5, FIGS. 1, 4 and 5)

  However, in the configuration of Patent Document 1, since the innermost layer of the resin tube is a conductive layer, it is easy to make electrical contact with the innermost layer by making the connector conductive. However, the other side that is mechanically connected by the connector may be metal or conductive resin, but if it must be connected to a non-conductive resin member from the standpoint of weight reduction and strength, etc., antistatic due to grounding It becomes difficult.

  In the configuration of Patent Document 2, the same conductive resin is penetrated from a part of the innermost layer of the resin tube to reach the surface of the resin tube. This increases the degree of freedom of the grounding position and makes grounding easy. However, the resin tube itself has a complicated structure that is not a mere multilayer structure, and manufacturing itself becomes difficult. Also, since the resin tube is usually provided with a layer other than the conductive resin layer to play the role of resin tube strength and fuel impermeability, the conductive resin is penetrated from the innermost layer to the outer peripheral surface. If this occurs, there is a risk that these strength and fuel impermeability standards may not be satisfied.

  As a solution to this, as shown in FIG. 12A, the innermost layer and the outermost layer are made of conductive resin layers, and the intermediate layer is made of a nonconductive resin layer that plays a role of strength and fuel impermeability. The structure which inserts a conductive connector in the end of this resin tube using the resin tube which has is considered. As shown in this figure, the conductive connector comes into contact with the inner peripheral surface of the innermost layer and the end surface of the outermost layer, and the two layers are electrically connected.

  In this configuration, since the conductive connector inserted into the resin tube is inserted into the inner peripheral surface of the innermost layer, electrical contact is sufficiently generated. However, energization must be ensured by contacting the cut surface of the resin tube with the outermost layer, and the conductive connector also contacts the end surface of the other layer of the resin tube at the same time. It does not necessarily make electrical contact to the outer layer. For this reason, even if a conductive clamp or metal bracket is in contact with the outermost layer and grounded when the resin tube is fixed, the outermost layer is not always electrically connected to the innermost layer via the conductive connector. Therefore, there is a risk that the antistatic property is insufficient.

  As shown in FIG. 12B, it is possible to ensure the electrical contact between the conductive connector and the outermost layer if only the outermost layer is made to protrude from the other layers of the resin tube. . However, the resin tube having such a special configuration requires a step of forming the outermost layer portion and the other portion separately and then penetrating the inner portion into the outermost layer portion, and the manufacturing cost is extremely high. Get higher.

  The present invention relates to a conductive multilayer tube terminal structure capable of electrically and reliably connecting the innermost layer and the outermost layer without having a special configuration of the conductive multilayer tube, and a conductive connector cover used in the terminal structure, conductive The purpose is to provide a flexible connector.

In the following, means for achieving the above object and its effects are described.
The conductive connector cover according to claim 1, wherein the conductive multilayer tube is attached to one end of a conductive multilayer tube having an innermost layer and an outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer. A connector cover used for a conductive multi-layer tube terminal in which a conductive connector that can be mechanically connected to a member is inserted, and the conductive cover main body covers the conductive connector by fitting to the conductive connector And a conductive contact portion that is provided on the conductive cover main body and that contacts the outer peripheral surface of the outermost layer of the conductive multilayer tube in a state where the conductive cover main body is fitted to the conductive connector. Thus, a current can be passed between the innermost layer and the outermost layer of the conductive multilayer tube through the conductive connector, the conductive cover main body, and the conductive contact portion.

  With the conductive connector cover having such a conductive contact portion, the conductive contact portion contacts the outer peripheral surface of the outermost layer of the conductive multilayer tube. Therefore, even if the conductive multilayer tube has a uniform end surface from the innermost layer to the outermost layer, for example, all the layers are integrally formed and cut to the required length, the conductive contact portion is not the conductive multilayer tube. Therefore, the conductive connector cover reliably contacts the outermost layer, so that an energized state can be ensured. A conductive connector is inserted into the innermost layer, and a conductive cover main body is fitted to this conductive connector. Therefore, a conductive multilayer tube is interposed via the conductive connector, the conductive cover main body, and the conductive contact portion. The energization state between the innermost layer and the outermost layer is assured. Therefore, by grounding at any position of the conductive multilayer tube, the innermost layer of the conductive multilayer tube can be reliably grounded, and antistatic can be reliably prevented.

In this way, the innermost layer and the outermost layer can be electrically and reliably connected without the conductive multilayer tube having a special configuration in which the outermost layer protrudes.
According to a second aspect of the present invention, in the conductive connector cover according to the first aspect, the conductive cover main body and the conductive contact portion are integrally formed of a conductive resin.

By doing in this way, the conductive connector cover which ensures the energization state from a conductive connector to the outermost layer of a conductive multilayer tube can be formed easily.
In the conductive multilayer tube terminal structure according to claim 3, a conductive connector is inserted into one end of a conductive multilayer tube having an innermost layer and an outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer, A conductive multi-layer tube terminal structure in which the conductive connector is covered with a connector cover, wherein the conductive connector cover according to claim 1 or 2 is used as the connector cover.

  Thus, by using the conductive connector cover according to claim 1 or 2 for the conductive multilayer tube terminal structure, the innermost layer can be formed without making the conductive multilayer tube have a special configuration in which the outermost layer protrudes. And the outermost layer can be electrically connected reliably.

The conductive connector according to claim 4 is a connector used at one end of a conductive multilayer tube having an innermost layer and an outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer. A conductive connector body inserted into one end of the multilayer tube and mechanically connectable to the conductive multilayer tube to another member; and provided in the conductive connector body, the conductive connector body being provided with the conductive multilayer body By having a conductive contact portion that contacts the outer peripheral surface of the outermost layer of the conductive multilayer tube in a state of being inserted into one end of the tube, the conductive contact body and the conductive contact portion are used to It is characterized in that electricity can be passed between the innermost layer and the outermost layer of the conductive multilayer tube.

  By the conductive connector having such a conductive contact portion, the conductive contact portion contacts the outer peripheral surface of the outermost layer of the conductive multilayer tube. Therefore, even if the conductive multilayer tube has a uniform end surface from the innermost layer to the outermost layer, for example, all the layers are integrally formed and cut to the required length, the conductive contact portion is not the conductive multilayer tube. Since the outer peripheral layer contacts the outer peripheral surface, the conductive connector reliably contacts the outermost layer, and an energized state can be secured. Since the conductive connector main body is inserted into the innermost layer, the energized state between the innermost layer and the outermost layer of the conductive multilayer tube is ensured through the conductive connector main body and the conductive contact portion. Therefore, by grounding at any position of the conductive multilayer tube, the innermost layer of the conductive multilayer tube can be reliably grounded, and antistatic can be reliably prevented.

In this way, the innermost layer and the outermost layer can be electrically and reliably connected without the conductive multilayer tube having a special configuration in which the outermost layer protrudes.
According to a fifth aspect of the present invention , in the conductive connector according to the fourth aspect , the conductive connector body and the conductive contact portion are integrally formed of a conductive resin.

By doing in this way, the conductive connector which ensures the electricity supply state from the innermost layer to the outermost layer of an electroconductive multilayer tube can be formed easily.
The conductive multi-layer tube terminal structure according to claim 6 , wherein the innermost layer and the outermost layer are conductive resin layers and the connector is inserted into one end of a conductive multi-layer tube having a non-conductive resin layer as an intermediate layer. It is a multilayer tube terminal structure, The said connector used the conductive connector of Claim 4 or 5. It is characterized by the above-mentioned.

Thus, by using the conductive connector according to claim 4 or 5 for the conductive multilayer tube terminal structure, the conductive multilayer tube does not have a special configuration in which the outermost layer protrudes, and the innermost layer and The outermost layer can be securely connected electrically.

[Embodiment 1]
FIG. 1 is a front view of a conductive multi-layer tube terminal structure for fuel supply to which the above-described invention is applied and a state of attachment to a vehicle engine. FIG. 2 shows a state where the conductive connector cover 2 is separated from the conductive multilayer tube terminal structure. In FIG. 2, the conductive multilayer tube 4 is shown in a partially broken state. FIG. 3 is a right side view of the conductive multilayer tube terminal structure, FIG. 4 is a perspective view, and FIG. 5 is a perspective view of the back side.

  The far tree part 6a of the conductive connector 6 is inserted and attached to the terminal 4a of the conductive multilayer tube 4 in the internal space. Since the outer peripheral surface of the fur tree portion 6a has a so-called far tree cross-sectional shape and the conductive multilayer tube 4 is formed of a resin, the inner surface of the conductive multilayer tube 4 is softened by heat treatment so that the fur tree portion 6a The stopper is applied by inserting. Further, an O-ring groove is formed at the tip of the fur tree portion 6a, and the O-ring 6b is disposed, so that the space between the conductive multilayer tube 4 and the conductive connector 6 is completely sealed.

  The conductive connector 6 has a quick connector portion 6c on the opposite side to the fur tree portion 6a, and a flange-shaped engaging portion 8a provided at the tip of a resin pipe 8 that is a mechanical connection target. The conductive connector 6 can be engaged with and connected to the resin pipe 8 simply by being inserted. The engagement is released by depressing the release button 6d, and the resin pipe 8 can be separated from the conductive connector 6. The conductive connector 6 is formed of a conductive resin, but the resin pipe 8 is formed of a nonconductive resin. The conductive connector 6 is on the fuel tank side, the resin pipe 8 is on the engine side, and fuel (gasoline or light oil) is supplied from the conductive connector 6 side to the resin pipe 8 side.

  The conductive connector cover 2 protects the conductive multilayer tube terminal structure by covering the terminal 4 a of the conductive multilayer tube 4, the conductive connector 6, and the engaging portion 8 a of the resin pipe 8. That is, the release button 6d is not pushed by covering the quick connector portion 6c. Furthermore, by making the internal shape corresponding to the shape in which the conductive connector 6 and the resin pipe 8 are securely engaged, only when the conductive connector 6 and the resin pipe 8 are reliably engaged, The conductive connector cover 2 can be fitted to the conductive multilayer tube terminal structure.

  FIG. 6 is a plan view (A), a front view (B), a perspective view (C), and a right side view (D) of the conductive connector cover 2, and FIG. The perspective view seen from the back side is shown. The conductive connector cover 2 is integrally formed of a conductive resin, and includes a resin pipe cover portion 10, two connector cover portions 12 and 14, and a conductive contact portion 16, which are connected by a connecting portion 18. It is said that.

  The resin pipe cover portion 10 is provided with an inner peripheral surface 10a corresponding to the outer peripheral surface of the engaging portion 8a of the resin pipe 8 and a flange housing groove 10b corresponding to the second flange 8b provided near the tip. One connector cover portion 12 is provided with an inner peripheral surface 12a corresponding to the outer peripheral surface of the quick connector portion 6c and a movement restricting surface 12b corresponding to the front end surface 6e (FIGS. 2 and 5) of the quick connector portion 6c. The other connector cover portion 14 is provided with an inner peripheral surface 14a corresponding to the outer peripheral surface of the conductive connector 6 and a movement restricting surface 14b (FIG. 5) corresponding to the step surface 6f.

  Further, the connector cover portion 14 is provided with protrusions 14c on both sides of the inner peripheral surface 14a. The interval between the protrusions 14c is set slightly smaller than the diameter of the connecting portion 6g between the fur tree portion 6a and the quick connector portion 6c in the conductive connector 6. Therefore, when the connecting portion 6g is stored in the inner peripheral surface 14a, the connector cover portion 14 is bent and pushed open, and the conductive connector cover 2 is prevented from falling off the conductive connector 6 after the connecting portion 6g is stored.

  By fitting such a conductive connector cover 2 to the conductive multi-layer tube terminal structure, the second flange 8b of the resin pipe 8 is accommodated in the flange housing groove 10b as shown in FIG. 5, and the two movement restricting surfaces 12b. , 14b, the configuration from the front end surface 6e to the step surface 6f of the conductive connector 6 is accommodated. As a result, the distal end side of the resin pipe 8 including the engaging portion 8a is accommodated in the inner peripheral surface 10a of the resin pipe cover portion 10, and the quick connector portion 6c is inserted in the inner peripheral surfaces 12a and 14a of the connector cover portions 12 and 14. And the front end side of the conductive connector 6 including the connection part 6g is accommodated.

  If the engaging portion 8a of the resin pipe 8 is not completely engaged with the quick connector portion 6c and is in a semi-engaged state, the second flange 8b of the resin pipe 8 cannot be stored in the flange storing groove 10b. It becomes possible. Or the structure from the front end surface 6e in the conductive connector 6 to the level | step difference surface 6f cannot be accommodated between the two movement control surfaces 12b and 14b. For this reason, the conductive connector cover 2 cannot be fitted into the conductive multilayer tube terminal structure, and the half-engaged state can be confirmed.

  When the conductive connector cover 2 is thus fitted to the conductive multilayer tube terminal structure, the two sandwiching arms 16a of the conductive contact portion 16 are opened by the insertion of the conductive multilayer tube 4, and the conductive multilayer tube 4 The terminal 4a is accommodated and the outer periphery of the terminal 4a is sandwiched from both sides.

  Here, the radial structure of the conductive multilayer tube 4 is composed of four layers as shown in FIG. 9, and is composed of an innermost layer 20, two intermediate layers 22, 24 and an outermost layer 26. Among these, the innermost layer 20 and the outermost layer 26 are conductive resin layers, but the two intermediate layers 22 and 24 are both non-conductive resin layers. Both the innermost layer 20 and the intermediate layer 22 adjacent to the outer side thereof use a fluorine-based resin in order to fulfill the function of fuel permeation resistance. However, in order to make the innermost layer 20 conductive, a conductive material is blended. The innermost layer 20 and the intermediate layer 22 may be made of a single layer, and the whole may be constituted by a fluorine resin mixed with a conductive material. However, if the fluorine resin is mixed with a conductive material, the cost increases. By making two layers in this way, it is possible to realize the conductivity of the inner surface of the conductive multilayer tube 4 while suppressing an increase in cost.

For the other outer intermediate layer 24, a resin having excellent rigidity is used in order to ensure the strength of the conductive multilayer tube 4. Here, a polyamide-based resin such as nylon is used.
The outermost layer 26 is an EPDM protector layer. Also in this protector layer, a conductive material is blended in EPDM to make it conductive.

  Since the far tree portion 6 a of the conductive connector 6 is inserted by heating and softening the inner surface of the conductive multilayer tube 4 by flare processing, the conductive connector 6 is electrically connected to the conductive innermost layer 20. A sufficient connection is ensured. Furthermore, since the conductive connector cover 2 is mechanically fitted and fixed to the conductive connector 6, a sufficient electrical connection between the conductive connector 6 and the conductive connector cover 2 is ensured. Is done. The conductive connector cover 2 sandwiches the outer peripheral surface of the conductive multilayer tube 4 at the conductive contact portion 16, thereby ensuring an electrically sufficient connection to the conductive outermost layer 26.

  Therefore, even if static electricity is generated on the inner surface of the conductive multilayer tube 4 due to contact with fuel such as gasoline or light oil, the innermost layer 20 → the conductive connector 6 → the conductive connector cover 2 → the outermost layer 26 is reliably energized. be able to. This makes it possible to reliably prevent charging by grounding at any point of the conductive multilayer tube 4. For example, as shown in FIGS. 1 and 2, a conductive clamp 32 is provided on a metal bracket 30 mounted in an engine or an engine room and clamped at an arbitrary position of the conductive multilayer tube 4 so that the grounding can be easily performed. Further, it is possible to reliably prevent static electricity generated inside the conductive multilayer tube 4.

In the configuration described above, the relationship with the claims is that the portion of the conductive connector cover 2 other than the conductive contact portion 16 corresponds to the conductive cover body.
According to the first embodiment described above, the following effects can be obtained.

  (I). Since the conductive contact portion 16 is in contact with the outer peripheral surface of the outermost layer 26 of the conductive multilayer tube 4, even the conductive multilayer tube 4 whose end surfaces are aligned from the innermost layer 20 to the outermost layer 26 as shown in FIG. The conductive connector cover 2 can be surely brought into contact with 26 and the energized state can be secured. For the innermost layer 20, the far tree portion 6 a of the conductive connector 6 is inserted, and the conductive connector cover 2 is fitted with the main body side of the conductive connector cover 2, so that the conductive connector 6 and the conductive connector cover 2 are fitted. As a result, the energized state between the innermost layer 20 and the outermost layer 26 of the conductive multilayer tube 4 is ensured. Therefore, by grounding at any position of the conductive multilayer tube 4, the innermost layer 20 of the conductive multilayer tube 4 can be reliably grounded with a high degree of positional freedom, and antistatic can be reliably performed.

Thus, the innermost layer 20 and the outermost layer 26 can be electrically and reliably connected without the conductive multilayer tube 4 having a special configuration in which the outermost layer 26 protrudes.
(B). In the conductive connector cover 2, the conductive cover main body side covering the conductive multilayer tube terminal structure and the conductive contact portion 16 are integrally formed of a conductive resin, so that the effects described in (a) are produced. The conductive connector cover 2 can be easily formed.

[Embodiment 2]
FIG. 10 shows a configuration around the terminal 104a of the conductive multilayer tube 104 which is a main part of the present embodiment. In the present embodiment, the connector cover 102 is not limited to conductivity but may be non-conductive. Here, the connector cover 102 is formed of a non-conductive resin. Further, the connector cover 102 is only on the cover body side, and there is no conductive contact portion. As shown in the drawing, the conductive multilayer tube 104 has the same structure and composition as those of the first embodiment (the conductive innermost layer 120, the nonconductive intermediate layers 122 and 124, and the conductive outermost layer 126). Yes. The connector 106 has the same shape as that of the first embodiment, but is not limited to conductivity but may be non-conductive. Here, the connector 106 is formed of a non-conductive resin.

  For this reason, the innermost layer 120 and the outermost layer 126 are not energized by the connector 106 and the connector cover 102. Instead, as shown in FIG. 10 (A), the conductive needle-like member 116 (here, a metal needle) is located more distal than the sealing position between the connector 106 and the conductive multilayer tube 104 by the O-ring 106b. The innermost layer 120 and the outermost layer 126 are driven. It should be noted that the conductive needle-like member 116 has a barb formed at the tip, so that it does not come off.

  As a result, the innermost layer 120 and the outermost layer 126 are energized through the conductive needle-like member 116, and can be grounded through the conductive clamp and the metal bracket at an arbitrary position of the conductive multilayer tube 104. Charging at 120 can be prevented.

  As shown in FIG. 10B, the conductive needle-like member 117 is further driven deeper into the far tree portion 106a of the connector 106, thereby strengthening the fitting of the connector 106 to the conductive multilayer tube 104. good.

According to the second embodiment described above, the following effects can be obtained.
(I). Since the conductive needle-like members 116 and 117 are driven between the innermost layer 120 and the outermost layer 126, both the layers 120 and 126 are energized through the conductive needle-like members 116 and 117. Therefore, by grounding at any position of the conductive multilayer tube 104, the innermost layer 120 of the conductive multilayer tube 104 can be reliably grounded with a high degree of positional freedom, and antistatic can be reliably ensured.

In this way, the innermost layer 120 and the outermost layer 126 can be electrically and reliably connected without the conductive multilayer tube 104 having a special configuration in which the outermost layer 126 protrudes.
In the case of this embodiment, the connector 106 may not be conductive, and the connector cover 102 may not be provided with a conductive contact portion or may be conductive. Cost reduction.

[Embodiment 3]
FIG. 11 shows a peripheral configuration of the terminal 204a of the conductive multilayer tube 204 which is a main part of the present embodiment. In the present embodiment, the connector cover 202 is not limited to conductivity but may be non-conductive. Here, the connector cover 202 is formed of a non-conductive resin. Further, the connector cover 202 is only on the cover body side, and there is no conductive contact portion. As shown in the figure, the conductive multilayer tube 204 has the same structure and composition as those of the first embodiment (the conductive innermost layer 220, the nonconductive intermediate layers 222 and 224, and the conductive outermost layer 226). Yes. In addition to the configuration described in the first embodiment, the conductive connector 206 is integrally formed with a conductive contact portion 207 extending along the outer peripheral surface of the fur tree portion 206a at a position adjacent to the fur tree portion 206a. ing.

  For this reason, when the fur tree portion 206 a is inserted into the terminal 204 a of the conductive multilayer tube 204, the distal end portion 207 a of the conductive contact portion 207 is securely attached to the outer peripheral surface of the conductive multilayer tube 204 by the elasticity of the conductive contact portion 207. To touch. For this reason, the innermost layer 220 and the outermost layer 226 are energized via the conductive connector 206, and can be grounded via the conductive clamp and the metal bracket at any position of the conductive multilayer tube 204. Can be prevented.

Note that the number of the conductive contact portions 207 provided in the conductive connector 206 may be one, or two or more.
In the configuration described above, the relationship with the claims is that the portion of the conductive connector 206 other than the conductive contact portion 207 corresponds to the conductive connector body.

According to the third embodiment described above, the following effects can be obtained.
(I). With the conductive connector 206 having such a conductive contact portion 207, even if the conductive multilayer tube 204 has the end surfaces aligned from the innermost layer 220 to the outermost layer 226 as shown in FIG. The conductive connector 206 can be surely contacted to ensure an energized state. Since the far-tree portion 206a is inserted into the innermost layer 220, the energization state between the innermost layer 220 and the outermost layer 226 of the conductive multilayer tube 204 is ensured through the conductive connector 206. Therefore, by grounding at any position of the conductive multilayer tube 204, the innermost layer 220 of the conductive multilayer tube 204 can be reliably grounded with a high degree of positional freedom, and antistatic can be reliably performed.

Thus, the innermost layer 220 and the outermost layer 226 can be electrically and reliably connected without the conductive multilayer tube 204 having a special configuration in which the outermost layer 226 protrudes.
In the case of the present embodiment, the connector cover 202 may not be provided with a conductive contact portion or may be made conductive, and the connector cover 202 further reduces the cost.

  (B). Since the conductive connector 206 is integrally formed of a conductive resin together with the conductive contact portion 207, the conductive connector 206 that produces the effect described in (a) can be easily formed.

[Other embodiments]
(A). As shown in FIGS. 3 and 4, in the first embodiment, the conductive contact portion 16 of the conductive connector cover 2 is configured to hold the conductive multilayer tube 4 by the two holding arms 16a. Instead, one arm having a shape as shown in FIG. 11 as the conductive contact portion 207 may be provided on the conductive connector cover so as to contact the outer peripheral surface of the conductive multilayer tube at one location. . Or two or more may be provided.

  (B). Although the conductive connector cover 2 of Embodiment 1 shown in FIGS. 6, 7, and 8 is formed of a conductive resin, it may be formed of metal. Further, a part of the conductive connector cover 2, for example, the conductive contact portion 16 and the connecting portion 18 may be formed of metal. The conductive connector 6 may also be formed of metal. The same applies to other embodiments.

  (C). In each of the above embodiments, the far tree part of the connector is attached to the inside of the conductive multilayer tube by heating and insertion. Further, a sealing material that hardens by a chemical reaction is provided between the conductive multilayer tube and the far tree part. It may be interposed. In particular, as in the first and third embodiments, when electrical connection between the innermost layer of the conductive multilayer tube and the fur tree portion is required, a conductive seal material is also used as the seal material.

The conductive multilayer tube terminal structure of Embodiment 1 and the front view of the attachment state to an engine. The fragmentary broken view in the state which isolate | separated the electroconductive connector cover from the said electroconductive multilayer tube terminal structure. The right view of the said conductive multilayer tube terminal structure. The perspective view of the said conductive multilayer tube terminal structure. The perspective view of the said electroconductive multilayer tube terminal structure seen from the back surface. Structure explanatory drawing of the said conductive connector cover. The perspective view of the said conductive connector cover. The perspective view of the said conductive connector cover seen from the back surface. The fragmentary sectional view in the state where the above-mentioned conductive connector was inserted in the conductive multilayer tube. The fragmentary sectional view which shows the electroconductive multilayer tube terminal structure of Embodiment 2. FIG. FIG. 4 is a partial cross-sectional view showing a conductive multilayer tube terminal structure according to a third embodiment. The fragmentary sectional view which shows the electroconductive multilayer tube terminal structure of a comparative example.

Explanation of symbols

  2 ... Conductive connector cover, 4 ... Conductive multilayer tube, 4a ... End of conductive multilayer tube, 6 ... Conductive connector, 6a ... Far tree part, 6b ... O-ring, 6c ... Quick connector part, 6d ... Release button , 6e ... tip surface, 6f ... step surface, 6g ... connection part, 8 ... resin pipe, 8a ... engagement part, 8b ... second flange, 10 ... resin pipe cover part, 10a ... inner peripheral surface, 10b ... flange housing Groove, 12 ... Connector cover portion, 12a ... inner peripheral surface, 12b ... movement restricting surface, 14 ... connector cover portion, 14a ... inner peripheral surface, 14b ... movement restricting surface, 14c ... protrusion, 16 ... conductive contact portion, 16a DESCRIPTION OF SYMBOLS ... Clamping arm, 18 ... Connecting part, 20 ... Innermost layer, 22, 24 ... Middle layer, 26 ... Outermost layer, 30 ... Metal bracket, 32 ... Conductive clamp, 102 ... Connector cover, 104 ... Conductive multilayer 106, connector, 106a, fur tree portion, 106b, O-ring, 116, 117, conductive needle member, 120, innermost layer, 122, 124, intermediate layer, 126 DESCRIPTION OF SYMBOLS ... Outermost layer, 202 ... Connector cover, 204 ... Conductive multilayer tube, 204a ... End of conductive multilayer tube, 206 ... Conductive connector, 206a ... Far tree part, 207 ... Conductive contact part, 207a ... Tip part, 220 ... innermost layer, 222, 224 ... intermediate layer, 226 ... outermost layer.

Claims (6)

Conductive connector capable of mechanically connecting the conductive multilayer tube to one end of a conductive multilayer tube having the innermost layer and the outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer. Is a connector cover used for a conductive multi-layer tube terminal inserted,
A conductive cover body that fits over the conductive connector and covers the conductive connector;
A conductive contact portion provided on the conductive cover body, the conductive cover body contacting the outer peripheral surface of the outermost layer of the conductive multilayer tube in a state in which the conductive cover body is fitted to the conductive connector;
It is possible to energize between the innermost layer and the outermost layer of the conductive multilayer tube through the conductive connector, the conductive cover body, and the conductive contact portion. Connector cover. 2. The conductive connector cover according to claim 1, wherein the conductive cover main body and the conductive contact portion are integrally formed of a conductive resin. A conductive multilayer in which a conductive connector is inserted into one end of a conductive multilayer tube having an innermost layer and an outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer, and the conductive connector is covered with a connector cover A tube terminal structure,
A conductive multilayer tube terminal structure using the conductive connector cover according to claim 1 or 2 as the connector cover. A connector used at one end of a conductive multilayer tube having an innermost layer and an outermost layer as a conductive resin layer and a non-conductive resin layer as an intermediate layer,
A conductive connector body inserted into one end of the conductive multilayer tube and mechanically connectable to the other member with the conductive multilayer tube;
A conductive contact portion provided on the conductive connector body, the conductive connector body contacting the outer peripheral surface of the outermost layer of the conductive multilayer tube in a state where the conductive connector body is inserted into one end of the conductive multilayer tube;
Therefore, it is possible to energize between the innermost layer and the outermost layer of the conductive multilayer tube through the conductive connector main body and the conductive contact portion. 5. The conductive connector according to claim 4 , wherein the conductive connector main body and the conductive contact portion are integrally formed of a conductive resin. A conductive multilayer tube terminal structure in which a connector is inserted into one end of a conductive multilayer tube having a non-conductive resin layer as an intermediate layer with the innermost layer and the outermost layer as a conductive resin layer,
A conductive multilayer tube terminal structure using the conductive connector according to claim 4 or 5 as the connector.

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