JP2001271980A - Connector for conductive tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for a conductive tube capable of being produced at a low cost with a small number of part items. SOLUTION: The connector comprises conduction pipe 13 situated at the end part of a conductive tube; and a cylindrical body part 12 having conductivity. A flange 16 is situated at the part, inserted in the body part 12, of the conduction pipe 13, a groove 27 with which the flange 16 is engaged is formed in the inner periphery of the body part 12, and an elastic protrusion 22 forced into elastic pressure contact with the tip part of the conduction pipe 13 with the flange 16 and the groove 27 engaged with each other is integrally formed on the inner periphery of the body part 12. The conduction pipe 13 inserted in the body part 12 is mounted in a state to be electrically connected to the body part 12 through the elastic protrusion 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for electrically connecting conductive tubes used, for example, in fuel pipes of automobiles.

[0002]

2. Description of the Related Art Conventionally, a metal tube and a rubber tube have been used in combination for a fuel pipe of an automobile. However, the rubber tube has insufficient impermeability to gasoline used as an automobile fuel, and is not preferable in terms of safety and environment. Further, the rubber tube is heavy, and when it is connected to the metal tube, it has to be extrapolated to the end of the metal tube and further fixed by tightening the outer periphery 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, the handle can be connected to the metal tube with one touch.

FIG. 9 shows an example of a fuel pipe using a resin tube. The fuel pipe includes a feed line 84 and a return line 88. The feed line 84 is a pipe for supplying fuel from the fuel tank 81 to the engine 82, and three tubes 85, 86, 87 sequentially connected from the fuel tank 81 to the engine 82 via a tube connector 92. It is composed of A filter 83 is provided in the feed line 84 in the middle of the tube 87 so that impurities such as dust contained in the fuel supplied to the engine 82 are removed. The return line 88 is a pipe for returning surplus fuel not consumed by the engine 82 to the fuel tank 81. The return line 88 is connected from the engine 82 to the fuel tank 81 via three tubes 91 and 9 connected in sequence via a tube connector 92.
0 and 89.

[0005] Of these, tubes 85 and 89 connected to the fuel tank 81 are provided to make the piping at the time of connection free and easy to arrange, and tubes 87 and 91 connected to the engine 82 are connected. In order to absorb engine vibration, a resin tube is used. In addition, metal tubes are used for the tubes 85 and 90 disposed between the lines 84 and 88 in order to provide strength against stepping stones during traveling.

However, when the fuel flows through 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 Publication No. 11-280580 discloses a pipe system for connecting an engine and a fuel tank. In a fuel piping system for an automobile, which is connected to a fuel pipe having a resin coating layer on an outer peripheral surface via a connector and a resin tube, the resin tube has conductivity formed by mixing a metal or carbon fiber or the like. A fuel pipe system for an automobile, wherein the fuel pipe is electrically connected to at least one of an engine-side pipe and a fuel-tank-side pipe, and the automobile fuel pipe system is configured. A connector used in such a case is disclosed.

According to the connector disclosed in Japanese Patent Application Laid-Open No. H11-280580, the tubular connector body is formed of a conductive material, and the conductive resin tube is externally inserted into a connection pipe extending from one end. The fuel pipe is inserted from the opening at the other end. The metal tube of the fuel pipe and the connector main body are electrically connected to each other by conductive means such as a conductive O-ring, a bush, and a conductive collar interposed therebetween, so that the conductive resin tube and the fuel pipe are connected. And are electrically connected to each other.

[0009]

However, Japanese Patent Application Laid-Open No.
In the connector disclosed in Japanese Patent Application Publication No. 280580, it is necessary to prepare the conducting means separately from the connector main body, so that the number of parts is increased, and the work of assembling the conducting means inside the elongated connector main body is difficult. That has led to increased costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive tube connector which has a small number of parts and can be produced at low cost.

[0011]

In order to achieve the above object, a first aspect of the present invention is a connector for connecting a conductive tube, wherein the connector has a cylindrical main body connected to the conductive tube. A conductive pipe inserted into the main body, a flange is provided on a portion of the conductive pipe inserted into the main body, and a groove is provided on an inner periphery of the main body, where the flange is fitted. An elastic projection, which is elastically pressed against the tip of the conductive pipe when the flange and the groove are fitted to each other, is integrally provided on the inner periphery of the main body. To provide.

According to the first aspect of the present invention, since the elastic projection which is pressed into contact with the conductive pipe is provided integrally with the main body, there is no need to separately provide a conductive means for making the main body and the conductive pipe conductive. Thus, the number of parts can be reduced, the number of assembling operations can be reduced, and the cost can be reduced. Further, since the elastic projection provided on the inner periphery of the main body portion is elastically pressed against the conductive pipe, even if the conductive pipe is slightly displaced in the axial direction on the inner periphery of the main body portion, the elastic projection does not separate from the conductive pipe, Conduction between the main body and the conductive pipe can be ensured.

According to a second aspect of the present invention, in the first aspect, there is provided a conductive tube connector in which the elastic projection is pressed against the inner periphery of the conductive pipe.

According to the second aspect, the conductive pipe is
Even when only the inner periphery is conductive, such as a metal tube coated with a non-conductive resin, the elastic projection can be brought into contact with the inner periphery of the conductive pipe to be electrically connected to the main body.

According to a third aspect of the present invention, in the first or second aspect, there is provided an annular slide member which is slidably mounted on the main body and has a groove on the inner periphery thereof for fitting the flange. One end of the slide member,
Expanding to form a receiving portion that receives the conductive pipe, the other end forms an engaging portion that engages with the main body, and the main body includes:
At a position where the slide member is slid in a direction in which the conductive pipe is pulled out from a position where the engagement portion and the main body portion are engaged, a regulating portion that regulates expansion of the receiving portion, When the position of the slide member is between the position where the engagement portion and the main body portion are engaged and the position where the expansion of the receiving portion is regulated by the regulation portion, the elastic projection is always An object of the present invention is to provide a connector of a conductive tube pressed against the conductive pipe.

According to the third aspect of the invention, when the conductive pipe is inserted into the receiving portion of the slide member when the engaging portion of the slide member and the main body are at the position where they are engaged, the receiving portion of the slide member becomes It is expanded by being pushed by the flange of the conductive pipe,
The flange can be fitted into the groove on the inner periphery of the slide member. At this time, the elastic projection is pressed by the peripheral surface of the conductive pipe and bends, so that the conductive pipe can be inserted to the back of the main body. Further, an engaging portion provided at the other end of the slide member is temporarily held by engaging with the main body.

When a pulling force acts on the conductive pipe in this state, the slide member is disengaged from the main body, and the slide member to which the flange of the conductive pipe fits also tries to move in the pulling direction. However, when the slide member moves in the pulling-out direction, the expansion of the receiving portion is regulated by the regulating portion of the main body, the flange of the conductive pipe does not come off from the groove, and the conductive pipe is integrated without falling out of the main body.

The conductive pipe slightly moves in the axial direction between the position where the conductive pipe is pushed into the main body and the position where the conductive pipe is moved in the withdrawing direction to restrict the expansion of the receiving portion. In the moving range of the conductive pipe, the elastic projection maintains a state in which the elastic projection is pressed against the conductive pipe, so that conduction between the conductive pipe and the main body is ensured.

On the other hand, when it is desired to pull out the conductive pipe from the main body and separate it again, the conductive pipe is once pushed into the main body, the receiving portion is detached from the regulating portion of the main body, and can be expanded. By pulling out the conductive pipe while holding the slide member in a state where it is engaged with the main body, the receiving portion is expanded and the flange of the conductive pipe is disengaged from the groove of the slide member. The pipe can be pulled out.

[0020]

1 to 3 show one embodiment of a connector for a conductive tube according to the present invention. FIG. 1 shows a connector of a conductive tube according to the present invention;
(A) is a longitudinal sectional view in a state where the conductive pipe is not attached to the main body, (b) is a transverse sectional view taken along the line AA 'of (a), and (c) is an enlarged sectional view of a main part. FIG. 3D is a longitudinal sectional view showing a state where the conductive pipe is attached to the main body. FIG.
FIG. 2 is a perspective view of the connector. 3A and 3B show an enlarged view of a main part of the connector, wherein FIG. 3A is a cross-sectional view showing a state where a receiving portion of the slide member can be expanded, and FIG. It is sectional drawing of a state.

The conductive tube connector of the present invention is, for example, a connector 9 for a fuel pipe of an automobile shown in FIG.
2 and so on.

As shown in FIG. 2, the connector 11 of the present invention
Is composed of a cylindrical main body 12 and a conductive pipe 13 inserted into the main body 12. One end of the main body portion 12 forms a bamboo shoot-shaped connecting tube portion 15 extending in the axial direction, and a conductive tube 14 is externally connected to the connecting tube portion 15 for connection. In addition, the conductive pipe 13
May be, for example, the metal tube itself to be connected, or another conductive tube may be connected to the conductive pipe 13.

An insertion hole 17 for receiving the conductive pipe 13 is opened at an end of the main body 12 opposite to the connection pipe portion 15, and the opening portion 17 has a flange-shaped expansion portion 1 at its opening edge.
8 are formed. The insertion hole 17 has a portion whose diameter is enlarged to an inner diameter larger than the outer diameter of the conductive pipe 13, and an annular slide member 19 is slidably inserted into the main body 12 in the enlarged diameter portion. And the slide member 1
9 and the end of the enlarged diameter portion of the insertion hole 17,
Seal rings 20 and 21 are interposed to seal between the conductive pipe 13 and the main body 12.

Further, the seal ring 2 of the insertion hole 17 is
A rib-shaped elastic projection 2 protruding inward from the inner peripheral surface and extending in the axial direction is provided at a deep portion of a portion where 0 and 21 are interposed.
2 is formed integrally with the main body 12. Elastic projection 22
Are located at the inner periphery of the proximal end of the connection pipe portion 15 and
The end face in the direction of the opening has a tapered shape such that the inwardly protruding height is gradually reduced.
Is guided in the insertion direction. Further, as shown in FIG. 1B, the elastic projections 22 are formed at positions that divide the inner circumference of the insertion hole 17 into four equal parts along the circumferential direction. However, the number of the elastic projections 22 in the circumferential direction can be appropriately changed.

The elastic projection 22 is located at a position where the conductive pipe 13 is elastically pressed against the end of the conductive pipe 13 when the conductive pipe 13 is inserted into the insertion hole 17 of the main body 12 and fitted by a structure described later. Further, even if the conductive pipe 13 is slightly displaced in the axial direction from the position, the conductive pipe 13 has such an axial length that the conductive pipe 13 is not separated from the conductive pipe 13. Also, the elastic projection 2
2, when the conductive pipe 13 is inserted,
When the conductive pipe 13 is bent by being pushed by its end,
The height is such that it can be pressed against the surface effectively.

The slide member 19 has a holding piece 23 extending outward at two opposite locations on the outer periphery, and a fitting part projecting outward from a part 90 degrees away from the holding piece 23. The projection 24 is provided. The holding piece 23 is attached to the main body 12.
Projecting outside the main body 12 through the opening 12 a of the main body 12, and the distal end thereof is formed into an annular convex portion 25
(See FIG. 1 (c)). Further, the fitting projection 24 is provided in another opening 12 of the main body 12.
b.

An annular groove 27 into which the flange 16 of the conductive pipe 13 is fitted is formed on the inner periphery of the slide member 19. Furthermore, when the slide member 19 moves to the opening side of the insertion hole 17, the distal end portion 28 of the slide member 19 (corresponding to the receiving portion of the present invention) is inserted into the inner periphery of the restricting portion 18, and is prevented from expanding. And the slide member 19 is inserted into the insertion hole 17.
When it is located at the back of the device, it can be expanded away from the restricting portion 18 through the opening 12a.

Next, the operation of the conductive tube connector according to the present invention will be described. First, when the conductive pipe 13 is inserted into the main body 12, the slide member 19 is moved to the back of the insertion hole 17 as shown in FIGS. At this time, the distal end portion 28 of the slide member 19 is separated from the restricting portion 18 of the main body portion 12, and the distal end portion 28 can be expanded through the opening 12a. Further, the slide member 19
Is engaged with the annular convex portion 25 of the main body portion 12 during the handling of the conductive pipe 13 before the connection,
The sliding member 19 is prevented from moving to the opening side of the insertion hole 17.

When the conductive pipe 13 is inserted into the insertion hole 17 of the main body 12 in this state, the tip 2
8 flexes outward and expands, and the flange 1 of the conductive pipe 13
6 fits in the annular groove 27. Further, in the inner part of the insertion hole 17, the conductive pipe 13
Is pressed so that the elastic protrusion 22 is bent so as to be pressed outward, and is pressed against the end face and the outer periphery of the conductive pipe 13. As a result, the main body 12 is electrically connected to the conductive pipe 13 via the elastic projection 22, and the conductive tube 14 is electrically connected to the conductive pipe 13 via the main body 12.

Next, when the conductive pipe 13 is pulled in the pulling-out direction in the above state, the slide member 19 in which the flange 16 of the conductive pipe 13 is fitted is pulled in the same direction, and the pressing piece 23 is bent outward and engaged. The mating portion 26 gets over the annular convex portion 25 and comes off, and the slide member 19 is slid to the opening side.

Then, the distal end portion 28 of the slide member 19
The state shown in FIG. 3A is in a state of being fitted into the inner periphery of the restricting portion 18 shown in FIG. 3B from a state away from the restricting portion 18, and the diameter cannot be expanded. As a result, the annular groove 27
The flange 16 of the conductive pipe 13 fitted in the annular groove 2
7 cannot be escaped, and the escape is prevented.

As described above, the slide member 19 is not
In FIG. 3B, the elastic projection 22 is moved in the axial direction by the distance a. At this moving distance, the elastic projection 22 has an axial length that can maintain a state of being sufficiently pressed against the end of the conductive pipe 13. Therefore, the conductive pipe 13 does not separate from the elastic projection 22 and the conductive tube 1
4 is maintained in a state of being electrically connected to the conductive pipe 13 via the main body 12.

On the other hand, when it is desired to pull out the conductive pipe 13 from the main body 12 and separate it again, the conductive pipe 13 is once pushed into the insertion hole 17 of the main body 12, and the engaging portion 26 of the holding piece 23 is formed into an annular convex portion. 25. In this state,
Hold down the holding piece 23 by hand and insert the slide member 19 into the insertion hole 1.
When the conductive pipe 13 is pulled in the pull-out direction while being held at the position moved to the back of 7, the distal end portion 28 of the slide member 19 expands through the opening 12a. Then, the conductive pipe 13 can be pulled out from the insertion hole 17 of the main body 12.

According to the connector 11 having the above configuration,
The conductive pipe 13 and the conductive tube 14 can be electrically connected to each other by one-touch operation, and can be easily removed, so that workability in constructing a pipe is good. In addition, since the main body 12 and the conductive pipe 13 are electrically connected to each other through the elastic projection 22 formed integrally with the main body 12, there is no need to attach a separate conductive means inside the main body 12, and the number of parts can be reduced. Can be reduced, the work of attaching the conducting means can be eliminated, and the cost can be reduced.

The elastic projection 22 moves by the moving amount a of the slide member 19 (see FIG. 3B) in a state where the flange 16 of the conductive pipe 13 is fitted in the annular groove 27 of the slide member 19. Also, any shape may be used as long as it can maintain the state of being pressed against the conductive pipe 13, and various shapes can be adopted.

FIG. 4 shows another embodiment of the conductive tube connector according to the present invention. 2A is a longitudinal sectional view showing a state in which the conductive pipe is not attached to the main body, FIG. 2B is a transverse sectional view taken along the line BB ′ of FIG. 2A, and FIG. FIG. 4 is a longitudinal sectional view of a state where the is attached to the main body. 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.

The connector 31 shown in FIG. 4 is obtained by changing the shape of the elastic projection 22 in the connector 11 of the above embodiment. That is, the insertion hole 1
An elastic projection 32 formed of an elastic piece extending in the axial direction toward the opening of the insertion hole 17 is provided with a base formed at a step formed at a portion where the connection pipe 7 communicates with the connection pipe 15. As shown in FIG. 4B, the elastic projections 32 are provided at four locations at equal intervals on the periphery of the opening inside the insertion hole 17 of the connection pipe part 15. The outer surface of the elastic projection 32 gradually becomes thinner toward the opening of the insertion hole 17, and
It has an inclined surface that reduces the diameter as a whole, and is easily inserted into the inner circumference of the end of the inserted conductive pipe 13.

According to the connector 31, when the conductive pipe 13 is inserted into the main body 12, the elastic projection 32 is pressed against the inner periphery of the conductive pipe 13, and the main body 12 and the conductive pipe 13 are electrically connected. It has become so. Therefore, even if the conductive pipe 13 is a metal tube having a non-conductive resin coating layer on the outer peripheral surface, it is possible to conduct electricity from the inner peripheral side of the conductive pipe 13.

FIG. 5 shows still another embodiment of the conductive tube connector according to the present invention. 2A is a longitudinal sectional view showing a state in which the conductive pipe is not attached to the main body, FIG. 2B is a transverse sectional view taken along the line CC ′ of FIG. 2A, and FIG. FIG. 4 is a longitudinal sectional view of a state where the is attached to the main body.

The connector 41 shown in FIG. 5 is obtained by further changing the shape of the elastic projection 32 in the connector 31 of the above embodiment. That is, an elastic projection 42 extending in the axial direction toward the opening side of the insertion hole 17 is provided at the back of the insertion hole 17 with the boundary between the insertion hole 17 and the connection pipe portion 15 as a base end. The elastic projection 42 has a substantially cruciform cross-sectional shape in which four elastic pieces are connected at the axis of the main body 12. Further, the outer sides of the four elastic pieces have a tapered shape, and the tip of the elastic projection 42 has a pointed shape like an arrow, so that it can be easily inserted into the inner periphery of the end of the inserted conductive pipe 13.

According to the connector 41, when the conductive pipe 13 is inserted into the main body 12, the elastic projection 42 is bent inward and pressed against the inner periphery of the conductive pipe 13 to electrically connect the main body 12 and the conductive pipe 13. Is conducted. At this time, the four elastic pieces are connected in a cross-shaped cross section, and the reaction force when bending is increased.
3 can be more strongly pressed against the inner circumference, and the conductive pipe 13 and the main body 12 can be more reliably brought into conduction.

FIG. 6 shows still another embodiment of the conductive tube connector according to the present invention in which the shape of the conductive pipe is changed.

The conductive pipe 51 shown in FIG. 6 is the conductive pipe 13 of the connectors 11, 31, 41 in the above embodiment.
The shape of is changed. That is, the conductive pipe 51 can be connected to the conductive tube 53 at its end.

One end of the conductive pipe 51 forms an insertion portion 54 to be inserted into the main body 12, and the other end of the conductive pipe 51
3 form a bamboo shoot-shaped connecting tube portion 55. A flange 16 that fits into the annular groove 27 of the slide member 19 is formed at a position at a predetermined distance from the distal end 52 of the insertion portion 54. In addition, a second flange 56 is formed between the insertion portion 54 and the connection pipe portion 55, and when the insertion portion 54 is inserted into the main body 12,
It comes into contact with the distal end portion 28 of the slide member 19 and the flange 16
Serves as a stopper that stops at a position where it engages with the annular groove 27.

The conductive pipe 51 can be connected to the conductive tube 53 by inserting the insertion portion 54 into the conductive tube 53. Then, the conductive tube 53 is connected to the main body 12 by inserting and fitting the conductive pipe 51 connected to the conductive tube 53 into the main body 12, and further another conductive pipe connected to the main body 12. It can be connected to the tube 14.

FIG. 7 shows still another embodiment of the conductive tube connector according to the present invention.

In this embodiment, the conductive pipe 61
However, each of the insertion portions 54 has a flange 16 that fits into the annular groove 27 of the slide member 19. A conductive plate-shaped bracket 62 is mounted in the middle of the conductive pipe 61. The bracket 62 has a mounting hole 63 for fixing it to a vehicle body or the like with a bolt or the like.

According to the conductive pipe 61, the main bodies 12, 12 can be attached to the insertion portions 54, 54 at both ends, whereby the conductive tubes 14, 12 connected to the main bodies 12, 12 can be attached. 14 can be connected.

Further, according to the above-described structure, the insertion portions 54, 54 at both ends of the conductive pipe 61 are connected to the respective main body portions 1.
2 and 12, a pair of conductive tubes 14,
14 is electrically connected to the conductive pipe 61 through the main bodies 12 and 12.

Therefore, by fixing the bracket 62 to the vehicle body or the like and conducting the same, the pair of conductive tubes 1
4 and 14 can be grounded to a vehicle body or the like via the main body portions 12 and 12, the conductive pipe 61 and the bracket 62.

FIG. 8 shows still another embodiment of the conductive tube connector according to the present invention.

This embodiment is a further development of the embodiment shown in FIG. 7, in which two conductive pipes 61 are arranged in parallel, and the middle between them is held by a voltage applying type static eliminator 71. The application type static eliminator 71 is grounded. The main body 12 to which the conductive tube 14 is connected is connected to the insertion portions 54 at both ends of each conductive pipe 61. As a result, the pair of opposing conductive tubes 14
Can be connected via corresponding conductive pipes 61, and two sets of such connected conductive tubes 14 can be arranged in parallel.

When a voltage is applied to the voltage applying type voltage reducing device 71, the static electricity generated when the fuel flows through the conductive tube 14 is removed from the main body 12 and the conductive pipe 6.
1, the forcible escape to the voltage-applying voltage reducing device 71 is performed, so that the charging of the conductive tube 14 can be effectively prevented.

[0054]

As described above, according to the present invention,
The main body and the conductive pipe are electrically connected to each other through an elastic projection provided integrally on the inner periphery of the main body. Therefore, a separate conducting means for conducting the main body and the conductive pipe is prepared. There is no need to reduce the number of parts, eliminate assembling work, and reduce costs. Also,
Even if the conductive pipe is slightly moved in the axial direction in the main body, the conductive state can be maintained by the elastic projection, so that poor conduction hardly occurs.

[Brief description of the drawings]

1A and 1B show an embodiment of a connector for a conductive tube according to the present invention, in which FIG. 1A is a longitudinal sectional view showing a state in which a conductive pipe is not attached to a main body, and FIG. '
A cross-sectional view along the arrow line, (c) is an enlarged cross-sectional view of a main part,
(D) is a longitudinal sectional view of a state where the conductive pipe is attached to the main body.

FIG. 2 is a perspective view of the connector.

3A and 3B are enlarged views of a main part of the connector, and FIG. 3A is a cross-sectional view illustrating a state where a receiving portion of a slide member can be expanded;
FIG. 5 is a cross-sectional view of a state where expansion of a receiving portion of the slide member is restricted.

4A and 4B show another embodiment of a connector for a conductive tube according to the present invention, wherein FIG. 4A is a longitudinal sectional view showing a state where a conductive pipe is not attached to a main body, and FIG.
FIG. 7C is a cross-sectional view taken along the line B ′, and FIG. 7C is a vertical cross-sectional view showing a state in which the conductive pipe is attached to the main body.

5A and 5B show still another embodiment of a connector for a conductive tube according to the present invention, wherein FIG. 5A is a longitudinal sectional view showing a state where a conductive pipe is not attached to a main body, and FIG.
FIG. 4C is a cross-sectional view taken along a line indicated by an arrow C ′, and FIG. 4C is a vertical cross-sectional view illustrating a state where the conductive pipe is attached to the main body.

FIG. 6 is a perspective view showing a conductive pipe in still another embodiment of the conductive tube connector according to the present invention.

FIG. 7 is a perspective view showing still another embodiment of the connector for a conductive tube according to the present invention.

FIG. 8 is a perspective view showing still another embodiment of the connector of the conductive tube according to the present invention.

FIG. 9 is a perspective view showing an example of a fuel pipe.

[Explanation of symbols]

 11, 31, 41 Connector 12 Main body part 13, 51 Conductive pipe 15 Connection pipe part 16 Flange 18 Restriction part 19 Slide member 22, 32, 42 Elastic projection 27 Annular groove 28 Tip part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J106 AB01 BA01 BB01 BC04 BD01 BE21 BE32 BE33 CA07 EA03 EB02 EC01 EC07 ED05 EE01 EF04 EF05

Claims (3)

[Claims] 1. A connector for connecting a conductive tube, wherein the connector has a cylindrical main body connected to the conductive tube, and a conductive pipe inserted into the main body. A flange is provided at a portion to be inserted into the main body; a groove is provided on an inner periphery of the main body to fit the flange; a tip portion of the conductive pipe in a state where the flange and the groove are fitted; A connector for a conductive tube, wherein an elastic projection elastically pressed against the main body is provided integrally with the inner periphery of the main body. 2. The conductive tube connector according to claim 1, wherein the elastic projection is pressed against an inner periphery of the conductive pipe. 3. A groove which is slidably mounted on the main body, and has a groove on an inner periphery thereof for fitting the flange.
An annular slide member is provided, one end of the slide member is expanded to form a receiving portion that receives the conductive pipe, and the other end is formed as an engaging portion that engages with the main body. A restricting portion for restricting expansion of the receiving portion at a position where the sliding member is slid from a position where the engaging portion and the main body portion are engaged in a direction in which the conductive pipe is pulled out; When the position of the member is between a position where the engaging portion and the main body portion are engaged and a position where the expansion of the receiving portion is regulated by the regulating portion, the elastic projection is always The conductive tube connector according to claim 1, which is pressed against the inner cylinder.