JP2844046B2 - Pipe fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connector such as a connector or a coupling, and more particularly, to a pipe connector having a structure in which a wrongly connected pipe can be easily removed.
The pipe connector according to the present invention is a conduit for inserting various cables, or a pipe such as a water supply / drainage hot water pipe, a sheath pipe for inserting a gas pipe, behind a wall or a ceiling of a building, or inside a concrete wall or inside a building. It is used when connecting to various materials installed outdoors such as boxes and protective equipment, and when connecting pipes.

[0002]

2. Description of the Related Art Conventionally, as a pipe connector for connecting a corrugated conduit having alternately formed peaks and valleys, as shown in FIG. 35, there is provided a receptacle 51 into which a conduit is inserted. An electric wire tube comprising: a connector main body 50 which is provided; and a cap body 60 provided inside with an elastic locking claw 62 in which a claw portion 63 for locking the electric wire tube inserted into the receptacle 51 projects inward. Connection fittings are known. The conduit connector has a cap body 60 in which a male screw 52 is formed on an outer peripheral surface of a socket 51 of the connector main body 50 and a female screw 61 screwed to the male screw 52 of the connector main body 50 is formed on an inner peripheral surface. Is screwed. When the conduit is inserted through the insertion opening of the cap body 60, the elastic locking claws 62 are expanded and the conduit is inserted into the receiving port 51 of the connector body 50. The portion 63 is locked to the valley of the conduit so that the conduit is connected in a detented state.

[0003] However, in the case of such a conventional conduit fitting, it is not easy to remove the conduit when the conduit is accidentally connected. Unless the cap body 60 screwed to the pipe is removed, the locking of the conduit tube cannot be released, so that the operation is very troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to release locking of a conduit such as a conduit without removing a cap body. Another object of the present invention is to provide a pipe connector that can easily remove a pipe that has been erroneously connected.

[0005] In particular, the present invention enables the pipe to be released by releasing the locking of the pipe by rotating the cap, and the pipe can be rotated without turning and returning the cap once rotated. Returning to the state before the movement, if you continue to insert the pipe, you can connect the pipe with the pipe locked,
Another object of the present invention is to provide a pipe connector that can stop a cap body at a pivoted position and release a hand from the cap body to remove a pipe, and to increase pull-out strength in a state where the pipe is connected. A pipe connector that can lock and unlock the pipe with a small rotation angle for the operation of the cap body, and a pipe connection that can rotate the cap body with little resistance It is an object of the present invention to provide a pipe connector that can reliably perform an operation of expanding an end of an elastic locking claw without further rotating the cap body more than necessary. is there. Still another object of the present invention is to provide a pipe connector capable of easily performing the turning operation in a use place where the turning operation of the cap body by hand is difficult.

[0006]

Means for Solving the Problems As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that a connector body provided with a socket into which a pipe is inserted, and a socket of the connector body are provided. And a cap body rotatably mounted in the circumferential direction.
The cap body is provided with an elastic locking claw having a claw portion for locking a pipe inserted into the connector body protruding inward on the inside. The pipe connector is provided with an expanding portion for expanding the end by slidingly contacting the end of the elastic locking claw in the circumferential direction by movement.

The receiving port may be a corrugated pipe in which peaks and valleys are alternately formed or a smooth pipe having a smooth outer surface, as long as it forms a port into which the pipe is inserted.

[0008] The expanding portion is opened by digging into the elasticity of the elastic locking claw by the rotation of the cap body, and is expanded by the elasticity of the elastic locking claw being operated by the rotation of the cap body. Includes both things.

The invention according to claim 2 is characterized in that at least one of the end of the elastic locking claw or the expanded portion has a slope inclined in the circumferential direction. "Piping fittings" are its contents.

[0010] The slope is inclined in a direction in which the end of the elastic locking claw is expanded by sliding contact between the end of the elastic locking claw and the expanding portion, and has a linear shape having a constant tilt angle. Not only that, but also those that are formed in a polygonal shape in which the inclination angle is changed stepwise, or those that are formed in an arc shape.
In addition, the phrase that at least one of the end portion or the expanding portion of the elastic locking claw has a slope inclined in the circumferential direction means that only the end portion of the elastic locking claw has a slope inclined in the circumferential direction. It refers to the case where only the widening portion has a slope inclined in the circumferential direction, and the case where both the end of the elastic locking claw and the widening portion have a slope,
The slope formed in these cases includes a case where each of the sliding contact portions between the ends of the elastic locking claws and the expanding portion is formed on a part thereof, and a case where the slope is formed on the whole.

[0011] The invention according to claim 3 is based on the " connector body ".
At least the widened part of the end and the end of the elastic locking claw of the cap body
On the other hand, the entire sliding contact surface is formed with an inclined surface that is inclined in the circumferential direction.
3. The pipe connection according to claim 1, wherein the connection is made.
Tool ”is its content. The invention according to claim 4 is
"Rotation of the cap body between the cap body and the connector body
Bias the cap body in the direction to return to the state before rotation
Or a biasing member interposed therebetween.
2 described above.

According to a third aspect of the present invention, when the end of the elastic locking claw is expanded, the expanded end is placed on the slope formed on the end or the expanded portion of the elastic locking claw. Can be configured by forming the slope so as to position
You. The invention of claim 4, wherein the anti-to rotation of the cap body
Then , an urging member such as a spring for urging the cap body in the direction to return the cap body to the state before the rotation can be interposed between the cap body and the connector body.

According to a fifth aspect of the present invention, there is provided "a holding portion for holding a pivoted cap body at a position where an end of an elastic locking claw is expanded." The pipe connector according to claim 1 or 2 is characterized in that.

[0014] The holding portion is in the form of a sliding contact portion between the end of the elastic locking claw and the expanding portion, that is, a riding surface which is in a riding state at a position where the end of the elastic locking claw is expanded. It can be constituted by forming it in an open part, and it can be constituted by formation of a friction surface between the connector body and the cap body, pressure contact structure, or engagement structure by unevenness.

[0015] Next, the invention of claim 6 wherein the preceding claims, characterized by comprising forming "the ends of the elastic locking claws to a shorter width than the claw width of locking claw 5 The pipe connector described in any one of the above items is a content thereof.

According to a seventh aspect of the present invention, there is provided a method as described above, wherein the end of the elastic locking claw is formed to have a width shorter than the claw width of the locking claw, and a part or all of the expanded portion is formed by the locking claw. The pipe connector according to any one of claims 1 to 5, characterized by being arranged within the claw width of (1) .

The claw width of the elastic locking claw refers to the width including the claw portion.

[0018] The invention of claim 8, any of claims 1 to 7, characterized in that the structure to be expanded by one of the expansion section the ends of "a plurality of elastic locking claws Or 1
Section "Piping fittings".

According to a ninth aspect of the present invention, there is provided a connecting device body and
A contact part is formed on one of the cap bodies.
In addition, one of the connecting device main body and the cap body is
Stop the contact portion to rotate the cap body more than a certain amount.
Claims characterized by providing a detent part for blocking.
The pipe connector according to any one of claims 1 to 8. "
Is the content.

The detent portion may have a structure that abuts a part of the cap body to prevent the rotation when the cap body is rotated, and a part of the cap body is an elastic member. Includes the end of the pawl or other parts.
The predetermined range refers to a range from the end of the elastic locking claw provided on the cap body to the expanded state by slidingly contacting the expanded portion of the connector body.

[0021] The invention according to claim 10 is characterized in that "the cap body is provided with a driver insertion portion, and the connecting member main body is provided with a support portion for operating the driver inserted into the insertion portion. Claims 1 through
The pipe connector according to any one of claims 9 to 9 ".

The insertion portion of the driver here includes a wall formed so as to be able to be pressed in the rotation direction of the cap body.

[0023] Then, an invention according to claim 11, wherein, wherein comprising respectively "gripping allowance capable gripping the rotation direction of the cap body to the connector body and the cap body
The pipe connector according to any one of items 1 to 10 ".
Is the content. The invention according to claim 12 is
"In each of the connection body and the cap body,
The fitting part that can rotate freely for a predetermined distance and
12. The method according to claim 1, wherein
The pipe fitting according to any one of the above items is the content thereof.
The thirteenth aspect of the present invention is directed to the "elastic locking claw of the cap body.
Is expanded and deformed outward and returns to its original shape,
Stops and pushes the expanded part due to rotation of the connector body
Elastically rides on the expanded portion to lock the tube.
Claim 1 to Claim 1 to expand to cancel
Item 13. The pipe connector according to any one of item 12,
And

[0024]

In the pipe connector according to the first aspect of the present invention, the pipe inserted into the receptacle of the connector main body is formed by an elastic locking claw provided on the cap attached to the receptacle of the connector main body. And an expanding portion that can be connected in a state locked by the claw portion, and that is slidably contacted with an end portion of the elastic locking claw in a circumferential direction by rotation of the cap body to expand the end portion. According to the configuration, when the cap body is rotated in the circumferential direction, the end of the elastic locking claw is expanded by sliding with the expanding portion, the locking between the claw portion and the pipe is released, and the connection tool main body is released. The tube can be pulled out from the receptacle and removed without removing the cap body. Then, by returning the cap body to the state before the rotation, the end of the elastic locking claw returns to the state before the expansion, so that the next pipe to be connected can be returned to the lockable state. Has become.

In the pipe connector according to the second aspect of the present invention, at least one of the end of the elastic locking claw or the enlarged portion has a slope inclined in the circumferential direction, so that the cap body is circumferentially inclined. , The ends of the elastic locking claws can be smoothly expanded.

[0026] In the tube connector according to the invention of claim 3 and claim 4, wherein, returning to the state even before turning without back again turning the cap body in which one Dan rotated, then connect Can be locked.

Further, in the pipe connector according to the fifth aspect of the present invention, the rotating cap is formed by forming the holding portion for holding the rotated cap body at the position where the end of the elastic locking claw is expanded. Even when the body is released, the end of the elastic locking claw is maintained in an expanded state.

According to a sixth aspect of the present invention, the end of the elastic locking claw is formed to have a width shorter than the claw width of the locking claw. It is possible to adopt a structure that is arranged within the width. This makes it possible to increase the number of claws by reducing the spacing between the elastic locking claws, or to form a wider locking portion between the tube and the claw portion. Can be increased. or,
The tube can be locked or unlocked with a small rotation angle for the operation of the cap body.

According to a seventh aspect of the present invention, in the pipe connector, the end of the elastic locking claw is formed to have a width shorter than the claw width of the locking claw.
In addition, since the widening portion is arranged within the claw width of the locking claw, the gap between the elastic locking claws is reduced by the amount that the widening portion is arranged within the claw width, so that a large number of cap members are provided. An elastic locking claw can be provided, and a locking portion between the tube and the claw portion can be widened, whereby the locking state of the tube can be strengthened and the pull-out strength can be increased. Further, the pipe can be locked or unlocked with a small rotation angle for the operation of the cap body.

The tube connector according to the invention of claim 8, by which the structure to be expanded by one of the expansion section the ends of a plurality of elastic locking claw, the ends of all of the elastic locking claws Are not expanded at once, but are expanded a plurality of times. This makes it possible to disperse the resistance when the ends of the elastic locking claws are expanded, and to rotate the cap body with a small resistance to expand the ends of the elastic locking claws. I have. Further, since the number of the expanding portions can be reduced, the structure of the connecting member main body is simplified, and the manufacturing becomes easy. In addition, when combined with the invention described in claim 5 or 6, the end of the elastic locking claw can be expanded by rotating the cap body with a small resistance, and
It is possible to increase the number of elastic locking claws by reducing the interval between the elastic locking claws via the expanding portion, and to form a wider locking portion between the tube and the claw portion, so that the tube can be locked more. Can be strong.

In the pipe connector according to the ninth aspect of the present invention, since the rotation preventing portion for restricting the rotation of the cap body to a predetermined range is provided, the cap body does not rotate more than necessary. The operation of expanding the end of the elastic locking claw can be reliably performed.

According to a tenth aspect of the present invention, there is provided a pipe connector,
By providing a driver insertion part in the cap body and providing a support part for operating the driver inserted in the insertion part in the connector body, the tip of the driver is inserted into the insertion part and the support part is used as a fulcrum. By twisting the cap body, the end of the elastic locking claw can be expanded or the expanded end can be returned. At this time, the driver can be properly fixed to the operation position by the support portion, and the turning operation of the cap body can be performed reliably and quickly. In addition, when combined with the invention described in claim 3, by twisting the cap body with a screwdriver and pulling out the driver, it is possible to rotate the cap body to a state before the rotation without rotating and returning the cap body. It can be returned.

In the pipe connector according to the eleventh aspect of the present invention, the cap body and the connector body are provided with gripping margins that can be gripped in the rotation direction of the cap body, so that a hand or pliers can be used. The cap body is rotated by gripping the grip margin with the above tool, and the end of the elastic locking claw can be expanded or the expanded end can be returned. In addition,
When combined with the third aspect of the present invention, the cap body is rotated and then the gripping portion gripped is released, thereby returning the cap body to the state before the rotation without rotating and returning the cap body. You can do it. Claim 12
The pipe connector according to the invention described above comprises a connector body and a cap body.
The connector body and the cap are connected by fitting portions provided in
A predetermined distance from each other in the circumferential direction without disconnecting
Rotate. The pipe connector according to the invention of claim 13 is a key connector.
Elastic locking claws of cap body is expanding opens deformed outwardly, restored to the original shape
To lock the pipe and rotate the connector body.
Elastically rides on the expanded portion by the pressing of the expanded portion accompanying
Raise and expand to unlock the tube, so simply pull the tube
By inserting into the cap body, you can connect with the tube locked
And by rotating the connector body,
The elastic locking claw of the hook body elastically rides on the expanded part of the
Can be lifted and unlocked from the tube.

[0034]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 5,
One embodiment of a pipe connector applied to a connector for connecting a pipe to an arrangement material such as various boxes and protective equipment is shown. The pipe connector has a socket 11 into which a pipe is inserted at one end, and a male connector 15 formed at the other end with a male screw 15 into which a nut 30 is screwed.
And a cap body 20 having a tube insertion port 24 corresponding to the receiving port 11.

As shown in FIG. 1, the cap body 20 has a projection 25 formed on the inner surface thereof,
1 is fitted into a concave portion 14 formed in the axial direction and the circumferential direction on the outer surface, and is movably fitted into the concave portion 14 formed in the circumferential direction. It is designed to be rotatably mounted. In this case, in order to prevent the cap body 20 from coming off from the receiving port 11, the concave portion 14 shallows the portion formed in the axial direction,
It is preferable to form a step with a deeper portion formed in the circumferential direction. In addition, the concave portion 14 and the convex portion 25 may be provided at one place or may be provided at a plurality of places.

The cap body 20 has a plurality of elastic locking claws 21 inwardly protruding inward from a claw portion 22 for locking a tube inserted into the receptacle 11 of the connector body 10. .
This elastic locking claw 21 is made of synthetic resin,
As shown in FIGS. 3 and 5, a gap 24 is formed between the inner surface of the cap body 20 and the inside of the cap body 20 so as to allow the claw portion 22 to escape therefrom. It is configured to bend and expand toward 24, and elasticity works so as to return to the original state (FIG. 3) when the end 23 is expanded (FIG. 5). . The elastic locking claws 21 may be made of metal, or may be separately attached to the cap body 20. As shown in FIG. 3, the claw portion 22 has a substantially vertical wall which forms the insertion side of the tube P on an inclined surface to facilitate the insertion of the tube P and locks the tube P against being pulled out. A triangular cross section is preferred.

A notch 13 into which an end 23 of the elastic locking claw 21 is fitted corresponding to the elastic locking claw 21 provided on the cap body 20 is provided at an end of the receiving port 11, and a cap body 20 is provided. The end portions 23 of the elastic locking claws 21 and the expanding portions 12 that are in sliding contact with each other when rotated are alternately formed. As a result, FIG.
As shown in (2), when the cap body 20 is attached to the receptacle 11, the end 23 of the elastic locking claw 21 and the expanding portion 12 are arranged adjacent to each other. That is, when the cap body 20 is rotated, the elastic locking claws 21
The end 23 is arranged at a position where the end 23 is in sliding contact with the expanding portion 12.

An outwardly inclined surface 12a is formed on one side edge of the expanding portion 12, while an end 23 of the elastic locking claw 21 is opposed to the outwardly inclined surface 12a on one side edge. An inward slope 23a is formed. Thereby, when the cap body 20 is rotated, these slopes 12a, 2a
The end portions 23 of the elastic locking claws 21 are superimposed on the expanding portion 12 by sliding the 3a into sliding contact with each other, so that the end portion 23 can be expanded. The expanding portion 12 and the elastic locking claw 2
Even if the slopes 12a, 23a formed on one end 23 are formed on either one, it is possible to open the end 23 by rotating the cap body 20. As described above, the expanding portion 12 and the end portion 23 of the elastic locking claw 21
If both are slidingly contacted by the slopes 12a and 23a, the expansion of the end portion 23 by the rotation of the cap body 20 becomes smooth and reliable.

In the above embodiment, the end 23 of the elastic locking claw 21 is located in the notch 13 as shown in FIGS. In this case, the claw portion 22 can protrude inward to lock the pipe P in a retaining state. On the other hand, as shown in FIG. 4 and FIG. Claws 21
When the end 23 is located in a state of being superimposed on the expanding portion 12, the claw portion 22 is retracted, the engagement between the tube P and the claw portion 22 is released, and the tube P is closed. 11 can be removed. FIG. 2 shows the elastic locking claws 21.
3 is a view of the state shown in FIG. 3 cut vertically along a line including the end portion 23 and viewed from the cap body 20 side, in which the outer peripheral wall of the cap body 20 is omitted. Similarly,
FIG. 4 is a view of the elastic locking claw 21 in a state shown in FIG. 5 which is cut vertically along a line including the end 23 and viewed from the cap body 20 side, and the outer peripheral wall of the cap body 20 is omitted. It is the figure which was done.

In the pipe fitting of the above embodiment, the elastic locking claw 2
When the first end 23 is expanded, the flat inner surface formed on the end 23 of the elastic locking claw 21 and the flat outer surface formed on the expanded portion 12 are in sliding contact with each other to rotate. Cap body 20
Is released, the end 23 of the elastic locking claw 21 is maintained in the expanded state (the state shown in FIGS. 4 and 5). That is, the flat outer surface formed in the expanding portion 12
A capping body 2 having a riding surface formed to be in a riding state at a position where the end portion 23 of the elastic locking claw 21 is expanded,
It is configured as a holding unit that holds 0. In the pipe connector having such a holding portion , the cap body 20 does not return to the state before the rotation even when the hand is released from the rotated cap body 20, and the end of the elastic locking claw 21 23 is maintained in an expanded state, and the pipe P can be pulled out of the receptacle 11 by one-handed operation. In the above embodiment, the expanding portion 1
The flat inner surface formed at the end 23 of the elastic locking claw 21 is brought into pressure contact with each other due to the elasticity of the elastic locking claw 21 and slidably contacts the flat outer surface formed at 2. Even if a slight external force acts on the moved cap body 20, the cap body 20 is not easily displaced.

FIGS. 6 and 7 show different examples of the expanding portion 12. In this example, the end portion 2 of the elastic locking claw 21 is shown.
The entire sliding surface of the expanding portion 12 slidably in contact with 3 is formed by a slope 12a, and by moving the end 23 of the elastic locking claw 21 on the slope 12a of the expanding portion 12, the elastic locking claw is moved. The outward expansion of the end portion 23 of 21 is enabled.
In the case of this example, unlike the embodiment shown in FIGS. 1 to 5, after removing the pipe P in a state as shown in FIG. When the hand is released from the body, the end portion 23 slides down the slope 12a due to the elasticity of the elastic locking claw 21, and returns to the state shown in FIG. That is, the configuration of the slope 12a of the expanding portion 12 is formed as a return portion that returns the cap body to the state before the rotation by releasing the rotated cap body.

The pipe connector having such a return portion is
By simply inserting the pipe P, the pipe P can be connected in a locked state, the operation of returning the cap body 20 to the state before the rotation can be simplified, the working efficiency can be improved, and the cap body 20 can be rotated. It is possible to prevent forgetting to perform the operation of returning to the state before the movement.

FIGS. 8 and 9 show still another example of the expanding portion 12. In this example, the other side edge of the expanding portion 12 (the side opposite to the side on which the slope 12a is formed). ), The stop wall 12b against which the end 23 of the expanded elastic locking claw 21 stops.
Are formed. The stop wall 12a is configured as a rotation preventing portion for restricting the rotation of the cap body to a predetermined range, and the end wall 23b of the elastic locking claw 21 is formed by the stop wall 12b.
In this case, the cap body does not need to be rotated more than necessary, and the spreading operation can be performed reliably. In addition, the impact wall 12b does not need to be provided in all the expanding portions 12, and may be provided partially.

The detent is not limited to the structure in which the end 23 of the resilient engaging claw 21 is stopped. As shown in FIG. 1, the protrusion formed on the inner surface of the cap 20 is connected to the connecting body 10. In the pipe connector which is fitted in the concave portion 14 formed on the outer surface of the elastic member, the length of the concave portion 14 in the circumferential direction is set to a length necessary for expanding the end portion 23 of the elastic locking claw 21. And a structure in which a convex portion is brought into contact with a side wall of the concave portion 14. Further, the concave portion 14 and the convex portion may be reversed. That is, a configuration is provided in which a convex portion is provided on the outer periphery of the connector body 10, and a concave portion or a notch is formed in the cap body 20, the convex portion engaging with the cap body 20 to form a side wall against which the convex portion abuts by rotation of the cap body. May be. As shown in FIGS. 6 and 7, a pipe connector formed so that the inclined surface 12a of the expanding portion 12 reaches the inner surface of the cap body (located at the outermost circle in FIGS. 6 and 7). In this case, the expanded end portion 23 is connected to the slope 12 a of the expanded portion 12.
The inner surface of the cap body disposed at the upper end can be brought into contact with the inner surface of the cap body, and the inner surface of the cap body can be configured as a detent part.

FIG. 10 shows another embodiment of the pipe fitting applied to the connector. The pipe connector has a socket 11 into which a pipe is inserted at one end, and a connector main body 10 formed with an external thread 15 into which a nut 30 is screwed at the other end, and a socket 11 of the connector main body 10. And a cap body 20 having a tube insertion port 24 corresponding to the receiving port 11. The cap body 20 has a convex portion 25 formed on the inner surface thereof and a concave groove 16 formed on the outer surface of the connector body 10.
Is forcibly fitted into the receptacle 11 of the connector body 10 so as to be rotatable in the circumferential direction. In addition, by providing slits on both sides of the convex portion 25 so that only the convex portion 25 can expand outward, the concave groove 1 is formed.
6 may be easily fitted.

Inside the cap body 20, the connecting device main body 1
Claw portion 22 for locking a tube inserted into the socket 11
A plurality of elastic locking claws 21 projecting inward are provided. On the other hand, at the end of the receptacle 11 of the connector body 10, two sets of elastic locking claws 21 Locking claw 21
Cut-out portion 13 into which end portion 23 is fitted, and elastic locking claw 21
Are formed alternately with the end portions 23 and the expanding portions 12 which are in sliding contact with each other. An inward slope 23a is formed at a part of the end 23 of the elastic locking claw 21, and an outward slope 12a is formed at one side edge of the expanded portion 12. In addition, expansion part 1
On the other side edge of 2, a stop wall 12 b is formed as a rotation stop portion against which the end 23 of the elastic locking claw 21 stops.

In the case of this example, the elastic locking claws 21 are formed in pairs, and when the end portions 23 of the elastic locking claws 21 are expanded, the first of each pair is set. The end 23 of the elastic locking claw 21 rides on the slope 12a of the expanding portion 12, and then the end 23 of the next elastic locking claw 21
2a. Therefore, the force required to rotate the cap body 20 to expand the end 23 of the elastic locking claw 21 is such that the end 23 of the elastic locking claw 21 individually rides on the slope 12a. It can be done with extremely small force. That is, the resistance required for the end portion 23 of the elastic locking claw 21 to ride on the inclined surface 12a is dispersed, so that the turning operation of the cap body 20 is smoothed, and the number of the elastic locking claw 21 is not reduced. It has a structure that can be locked securely.

In the above embodiment, if the end 23 of the elastic locking claw 21 is located in the notch 13 with the cap body 20 attached to the receiving port 11, it is shown in FIG. As described above, the claw portion 22 can protrude inward to lock the pipe P in a retaining state, while the rotation of the cap body causes the end portion 23 of the elastic locking claw 21 to be on the expanded portion 12. In the case of being located in the overlapping state, as shown in FIG. 12, the claw portion 22 retreats, the engagement between the tube P and the claw portion 22 is released, and the tube P can be pulled out from the receiving port 11. I can do it.

Incidentally, in the case of the pipe connector of the above embodiment, the flat outer surface formed in the expanding portion 12 is a riding surface in which the end portion 23 of the elastic locking claw 21 is raised to the expanded position. is formed and make holding the rotating the cap member 20 held
Is configured as a part, an end portion 23 of the elastic latching pawls 21 also releases the hand is adapted to be maintained in a state of being expanded from the pivot and the cap member 20.

In the pipe connector of the above embodiment, the slopes 12a and 23a are formed on both the expanding portion 12 and the elastic locking claw 21, and the slopes 12a and 23a are brought into sliding contact with each other by elastic sliding. Although the end 23 of the claw 21 can be expanded, the slope may be formed on either the expanded portion 12 or the end 23 of the elastic locking claw 21. .

FIGS. 13 and 14 show various embodiments of the pipe fitting applied to the coupling for connecting the pipes. The cap body 20 is rotatably mounted on the mouth 11. The pipe connector shown in FIG. 13 is obtained by applying the structure of the cap body and the socket of the connector body shown in FIG. 1 to the pipe connector shown in FIG. 1, and the pipe connector shown in FIG. The structure of the cap body of the tool and the socket of the connector body is applied. Note that the example shown in FIG. 6 or FIG. 8 can be applied to both pipe connectors such as a connector and a coupling, and the same applies to the embodiments described below.

FIGS. 15 to 25 show another embodiment of the pipe fitting applied to the connector. FIG. 15 and FIG.
6 is a front view and a rear view of the cap body 20, FIG. 17 is a sectional view of the same cap body 20, and FIG. In the case of this pipe connector, the cap body 2
The convex part 25 (FIG. 17) formed on the inner surface of the connector body 10 has a concave part 14 (FIG.
8), and a recess 14 formed in the circumferential direction.
The connector body 10 is movably loosely fitted in the connector body 10.
The receiving port 11 is rotatably mounted in the circumferential direction.

In this example, a step having a taper 14a is provided between the concave portion 14 formed in the axial direction and the concave portion 14 formed in the circumferential direction on the outer surface of the receiving port 11 of the connector body 10. The convex portion 25 of the cap body 20 is formed with a reverse taper 25a at a part thereof.
The cap body 20 can be easily mounted by sliding contact with the taper 14a.
The concave portion 1 in which the convex portion 25 of the cap body 20 is formed in the circumferential direction
The cap body 20 is engaged with the cap 4 in a retaining state so that the cap body 20 does not come off accidentally.

A notch 13 into which an end 23 of the elastic locking claw 21 is fitted corresponding to the elastic locking claw 21 provided on the cap body 20 is provided at an end of the receiving port 11, and a cap body 20 is provided. The end portions 23 of the elastic locking claws 21 and the expanding portions 12 that are in sliding contact with each other when rotated are formed alternately, and the cap body 20 is attached to the receiving port 11 as shown in FIG. Then
The end 23 of the elastic locking claw 21 and the expanded portion 12 are arranged adjacent to each other. That is, when the cap body 20 is rotated, the end 23 of the elastic locking claw 21 is arranged at a position where the end 23 slides on the expanding portion 12.

As shown in FIG. 20, the elastic locking claws 21 provided on the cap body 20 are bent inward by providing a clearance 24 between the inner surface of the cap body 20 and the claw portion 22 as an escape space. As shown by a two-dot chain line in FIG.
Are formed so as to bend toward the gap 24 and be in an expanded state. Then, in the expanded state, the elasticity works so as to return to the original state (solid line in the figure).

As shown in FIGS. 21 and 22, an inward slope 23a formed in an arc shape is formed at an end 23 of the elastic locking claw 21, while a slope is formed at the expanding portion 12. 2
3a, an outward slope 12a is formed opposite to 3a.
When the cap body 20 is rotated, these slopes 12
The end 23 can be expanded by bringing the a and 23a into sliding contact with each other. In addition, the slopes 12 a, 2 formed on the end portion 23 of the expanded portion 12 and the
Even if 3a is formed on either side, it is possible to rotate the cap body 20 to expand the end 23. As described above, the expanding portion 12 and the elastic locking claw 2
If both ends 23 are slid by the slopes 12a, 23a, the expansion of the end 23 by the rotation of the cap body 20 becomes smooth and reliable.

In this pipe connector, as shown in FIG. 16, the end 23 of the elastic locking claw 21 is formed to have a width smaller than the width of the elastic locking claw 21 and is expanded. The opening 12 is, as shown in FIG.
Are formed so as to be arranged within the width of the claw. In this pipe connector, the distance between the elastic locking claws 21 is larger than that of the pipe connector shown in FIG.
, And a large number of elastic locking claws 21 can be provided on the cap body 20, and the locking portion between the tube and the claw portion 22 can be formed wider, whereby the cap body 20 can be widened. The locking state of the tube can be strengthened, and the pull-out strength can be increased. Further, as compared with the case of the pipe connector shown in FIG. 1, the distance in which the end portion 23 of the elastic locking claw 21 is overlapped on the expanding portion 12 is shorter, and
With respect to the operation, the tube can be locked or unlocked with a small rotation angle.

The width of the end portion 23 is such that the claw portion 22 can be lifted to such an extent that the engagement with the tube is released, and that the elastic member 23 can resist the elasticity of the elastic locking claw 21 in the expanded state. Considering that the elastic locking pawl 21 has a width, it is preferable that the elastic locking pawl 21 is formed to have a width that is about half the width of the claw. In the above embodiment, the whole of the expanding portion 12 is arranged within the claw width of the elastic locking claw 21, but a part of the expanding portion 12 is within the claw width of the elastic locking claw 21. May be arranged.

Now, in the case of the above embodiment, as shown in FIG.
When the end 23 of the elastic locking claw 21 is located in the notch 13, the claw 22 protrudes inward and a pipe (not shown) is formed.
Can be locked in a retaining state. On the other hand, as shown in FIG. In this case, the claw portion 22 is retracted, the engagement between the tube and the claw portion 22 is released, and the tube can be pulled out from the receiving port 11.

In the pipe connector of the above embodiment, the flat outer surface formed on the expanding portion 12 has a riding surface which is set to a position where the end portion 23 of the elastic locking claw 21 is expanded so as to run up. formed, causing holds the rotating the cap member 20 coercive
Is constructed as a lifting unit, the ends 23 of the elastic latching pawls 21 also releases the hand is adapted to be maintained in a state of being expanded from the pivot and the cap member 20.

Further, on the other side edge (the side opposite to the side on which the slope 12a is formed) of the expanding portion 12, an impact as a rotation preventing portion against which the end 23 of the expanded elastic locking claw 21 impacts is provided. The stop wall 12b is formed, and when the end portion 23 of the elastic locking claw 21 is expanded, the cap body is not rotated more than necessary, so that the expanding operation can be performed reliably. ing.

Further, in the pipe connector of the above embodiment, a recess 26 (FIG. 16) is provided on the peripheral wall of the cap body 20, while a U-shaped bulge is formed on the outer surface of the connector body 10. A part 17 (FIG. 17) is provided. This recess 26
The U-shaped bulging portion 17 is arranged so that the openings face each other when the cap body 20 is attached to the receiving port 11 of the connector body 10. The recess 26 and the U-shaped bulge 17 are used for rotating the cap body 20 by a driver. That is, as shown in FIGS. 23 and 24, the recess 26 is configured as an insertion portion into which the tip of the driver D is inserted, and the U-shaped bulging portion 17 is a support portion for operating the inserted driver D. The cap body 20 can be rotated by twisting the tip of the driver D inserted into the recess 26 with the U-shaped bulging portion 17 as a fulcrum. This rotation operation is possible in both directions of expanding the end of the elastic locking claw and returning from the expanded state.

For example, as shown in FIG. 25, such a pipe connector is attached to a terminal protector E via a connecting nut 31 and is used for connecting the pipe P from inside the concrete slab W to the space above the ceiling. Cap body 20 by hand
This is convenient for use in places where it is difficult to rotate the camera. That is, in FIG. 25, the concave portion 26 and the U-shaped
When it is necessary to turn the cap body 20 by attaching the pipe connector to the terminal protector E so that the pipe connector 7 is located at the lower opening surface, the above operation is performed using a screwdriver to remove the cap. This is because the body 20 can be easily rotated.

When the pipe connector having such an insertion portion and a support portion is combined with a tube connector having a return portion as in the embodiment shown in FIGS. If the driver pulls out after rotating the body, the cap body returns to the state before the rotation without rotating and returning the cap body. In the use state shown in FIG. 25, the cap body is rotated by the driver. The operation for returning to the previous state is unnecessary, and the workability is good. Of course, this does not prevent the provision of the insertion portion and the support portion in the pipe connector having the holding portion as in the above embodiment.

The concave portion 26 as the insertion portion and the U-shaped bulging portion 17 as the support portion are not limited to the two places as in the embodiment, but are provided at one place or three or more places. It may be something. If the number is large, any of the recesses 26 and the U-shaped bulging portion 17 can be positioned on the lower opening surface in the use state shown in FIG. The insertion portion may be any one that can turn the cap body by the driver, and may be one that is configured by a wall that the tip of the driver can hit. Further, the support portion may be any as long as it functions as a fulcrum for prying the driver inserted into the insertion portion, and is formed by the V-shaped bulging portion 17 or the L-shaped bulging portion 17. May be.

If only the insertion portion is provided on the cap body, the cap body can be rotated by the driver. However, the provision of the support portion on the connection tool body makes it necessary to fix the driver properly at the operation position. The rotation operation of the cap body can be performed reliably and quickly.

FIGS. 26 and 27 show another example of a pipe connector, which is suitable for use in a place where it is difficult to rotate the cap body by hand (FIG. 25). ing. This pipe connection device includes a cap body 20 and a connection device body 10.
In addition, it is configured by providing gripping margins 27 and 18 with pliers T. In this example, the leading ends of the pliers T are spread over the gripping margins 27 and 18, and the gripping margins 27 and 18 are gripped by the pliers T, so that the gripping margin 27 of the cap body 20 is grasped by the gripping margin of the connector body 10. 18 so that the cap body 20 can be rotated.
In this example, the elastic locking claw is configured to be rotatable only in one direction in which the end of the elastic locking claw is expanded or returned from the expanded state. Further, by providing the capping margin 27 of the cap body 20 at the opposite position, it is possible to rotate the elastic locking claw in both directions of expanding and returning from the expanded state. The gripping margins 27 and 18 may be provided at a plurality of locations on the cap body 20 and the connector body 10.
If there are many, it is possible to position any of the gripping margins 27, 18 in the lower opening surface in the use state shown in FIG. It should be noted that the gripping margin is not limited to that gripped by pliers, but may be gripped by hand.

When the pipe connector having such a gripping margin is combined with the one having a return portion as in the embodiment shown in FIGS. 8 and 9, the gripping margin is released by releasing the gripping margin. It is possible to return to the state before rotation without rotating and returning the cap body. Such a combination structure is suitable for a structure that can rotate only in one direction in which the ends of the elastic locking claws are expanded or returned from the expanded state as in the embodiment shown in the above-described drawings. ing.

It is possible to rotate the cap body by providing a gripping margin only on the cap body. However, by providing a gripping margin on the connecting body, the cap body can be fixed while fixing the connecting body. The rotation operation can be performed reliably and quickly.

FIGS. 28 to 34 show still another embodiment of the pipe fitting applied to the connector. 28 and 29 are a front view and a rear view of the cap body 20, and FIG.
Is a cross-sectional view of the cap body 20, and FIG. 31 is a perspective view of the connector body 10. The pipe connector has a socket 11 into which a pipe is inserted at one end, and a connector main body 10 formed with an external thread 15 into which a nut 30 is screwed at the other end, and a socket 11 of the connector main body 10. A cap body 20 having a plurality of elastic locking claws 21 having a corresponding tube insertion port 24 and having a claw portion 22 for locking the tube inside protruding inward.

The cap body 20 is formed by fitting a convex portion 25 formed on the inner surface thereof into a concave portion 14 formed on the outer surface of the receptacle 11 of the connector body 10 in the axial and circumferential directions. The receiving port 11 is attached to be rotatable in the circumferential direction. In this example, the recess 14 is provided with a step having a taper 14a, and the protrusion 25 of the cap body 20 is formed with a reverse taper 25a at a part thereof, so that the reverse taper 25a and the taper 14a are formed. And the cap body 20 can be easily mounted by sliding contact with the projections 25, and the projections 25 of the cap body 20 are engaged with the recesses 14 formed in the circumferential direction in a retaining state, The cap body 20 is not accidentally pulled out.

A notch 13 into which an end 23 of the elastic locking claw 21 is fitted corresponding to the elastic locking claw 21 provided on the cap body 20 is provided at an end of the receiving port 11, and a cap body 20 is provided. The end portions 23 of the elastic locking claws 21 and the expanding portions 12 that are in sliding contact with each other when rotated are formed alternately, and as shown in FIG. 32, the cap body 20 is attached to the receiving port 11. Then
The end 23 of the elastic locking claw 21 and the expanded portion 12 are arranged adjacent to each other. That is, when the cap body 20 is rotated, the end 23 of the elastic locking claw 21 is arranged at a position where the end 23 slides on the expanding portion 12.

In this example, the elastic locking claw 21 provided on the cap body 20 has an end portion 23 formed with a width shorter than the claw width, and has an end portion 23 formed with the same width. The elastic locking claw 21 having an end 23 formed with a short width and the elastic locking claw 21 having an end 23 formed with the same width are paired to form a cap body 20. It is located inside. An elastic locking claw 21 corresponding to the pair of elastic locking claws 21 is provided at an end of the receptacle 11.
Notch 13 into which the end 23 of the
When the is rotated, the end portions 23 of the elastic locking claws 21 and the expanding portions 12 that are in sliding contact are formed alternately. When the cap body 20 is attached to the receiving port 11, the end 2 of the elastic locking claw 21 having the end 23 formed with a small width.
3 and the expanding portion 12 are arranged adjacent to each other.

The end 23 of each elastic locking claw 21 has an inward slope 23 formed in an arc shape on the sliding contact side with the expanding portion 12.
a is formed, while the expanded portion 12 has an end 23
An outwardly inclined surface 12a is formed on the sliding contact side of the end portion 23, so that the opening of the end portion 23 by the rotation of the cap body 20 can be performed smoothly and reliably. In addition, a slope 12 a formed on the end portion 23 of the expanding portion 12 and the elastic locking claw 21,
Even if 23a is formed on either side, it is possible to rotate the cap body 20 to expand the end 23. On the other side edge (the side opposite to the side where the inclined surface 12a is formed) of the expanding portion 12, an impact wall 12b as a detent portion for impacting the short width end 23 of the elastic locking claw 21 is provided.
When the end 23 of the elastic locking claw 21 is expanded, the cap body is not rotated more than necessary, so that the expansion operation can be performed reliably.

Now, in this pipe connector, the elastic locking claws 21 are formed in pairs, and when the end 23 of the elastic locking claws 21 is expanded, each pair is set. The end 23 of the first elastic locking claw 21 rides on the slope 12a of the expanding portion 12, and thereafter, the end 23 of the next elastic locking claw 21 rides on the slope 12a. Therefore, the force required to rotate the cap body 20 to expand the end 23 of the elastic locking claw 21 is such that the end 23 of the elastic locking claw 21 individually rides on the slope 12a. It can be done with extremely small force. That is, the end 23 of the elastic locking claw 21 is
Disperse the resistance required to ride the cap
The structure is such that the rotation operation of the tube can be smoothly performed and the tube can be securely locked without reducing the number of the elastic locking claws 21.

Further, in the pipe connector of the above embodiment, the elastic locking claw 2 having the end 23 formed with a short width is used.
1 and a part of the enlarged portion 12 is formed so as to be disposed within the claw width of the elastic locking claw 21 having the end portion 23 formed with its short width. For this reason, compared with the case of the pipe connector shown in FIG. 14, the gap between the elastic locking claws 21 is reduced by the distance that the expanding portion 12 is disposed within the claw width of the elastic locking claw 21, and the cap A large number of elastic locking claws 21
Can be provided, and the locking portion between the tube and the claw portion 22 can be formed widely, whereby the locking state of the tube can be strengthened and the pull-out strength can be increased. ing. Further, as compared with the case of the pipe connector shown in FIG. 14, the distance at which the end 23 of the elastic locking claw 21 is overlapped on the expanding portion 12 is shorter, and the pipe is engaged with a smaller rotation angle for the operation of the cap body 20. It can be stopped and released.

In the above embodiment, as shown in FIG. 33, when the cap body 20 is mounted on the socket 11 and the end 23 of the elastic locking claw 21 is located in the notch 13 On the other hand, the claw portion 22 can protrude inward to lock a tube (not shown) in a retaining state, while, as shown in FIG. 2
In the case where the end 23 of the first member is located on the enlarged portion 12, the claw 22 is retracted, the engagement between the tube and the claw 22 is released, and the tube is connected to the receiving port 11. It can be extracted from.

While the various embodiments of the pipe connector have been described above, when the pipe P is connected, the elastic locking claw is pressed by the pressing force when the pipe P is inserted. 21 while expanding the end of the elastic locking claw 2
1, the claw portion 22 may be locked to the pipe P. Alternatively, the cap body 20 may be rotated and the elastic locking claw 2 may be locked.
Alternatively, the pipe P may be inserted in a state where the end 23 is expanded, and then the claw portion 22 may be locked to the pipe P by returning the cap body 20 to a state before the rotation.

In the pipe connector of each of the above embodiments, an end 23 of the elastic locking claw 21 is provided at an end of the receiving port 11 in correspondence with the elastic locking claw 21 provided on the cap body 20. The notch 13 to be fitted is formed.
May be formed as a space where the end portion 23 of the elastic locking claw 21 is disposed at a position where the end portion 23 of the elastic locking claw 21 is slidably in contact with the expanding portion 12. The present invention is not limited to the form, and may be configured by a dent having a peripheral wall left inside, for example. In addition, when the cutout portion 13 is configured to be completely cut out as in the embodiment, the claw portion 22 for locking the pipe is different from the cutout portion 13 formed by the notch having the peripheral wall left inside. The amount of protrusion becomes smaller by the thickness of the peripheral wall, and the minimum amount of protrusion is sufficient,
The cap body 20 and the connector main body 10 can be made compact, and the materials required for manufacture can be reduced and supplied at low cost.

The structure of the insertion portion and the support portion of the pipe connector shown in FIGS. 15 to 25, or FIGS. 26 and 27
28 to 34 show the configuration of the allowance of the pipe connector shown in FIG.
May be applied in the same manner to the pipe connector shown in FIG.

Further, the slope formed at the sliding contact portion between the end of the elastic locking claw and the expanding portion is not limited to a linear one having a constant inclination angle, and the inclination angle is varied stepwise. Various combinations of those formed in a polygonal shape or those formed in an arc shape may be implemented.

Further, in order to facilitate the rotation operation by hand, the outer peripheral surface of the cap body may be provided with an uneven grip, or a non-slip member such as rubber may be stuck or wound around. Good.

[0083]

As described above, according to the present invention,
Be one that can provide a pipe connector capable of performing removal of the connected incorrectly tube easily, wherein
By adopting the configuration of the invention described in any one of Items 1 to 13, it is possible to release the lock of the tube and easily remove the tube simply by rotating the cap body without removing the cap body. This has the effect that troublesomeness can be eliminated.

Further, by adopting the structure of the invention according to the third and fourth aspects, the pipe to be connected next can be locked without rotating and returning the cap body once rotated. The operation of returning the cap body to the state before the rotation is simplified, the work efficiency can be improved, and the forgetting of the operation of returning the cap body to the state before the rotation can be prevented. It has the effect of being able to do it.

[0085] Also, by adopting the configuration of the fifth aspect of the present invention, it is possible to extract the pipe from the receptacle without holds by hand turning the cap body, removing work of the tube with one hand operation It can be performed. Also, the cap body is held by the holding portion at the position where the end of the elastic locking claw is expanded.
By holding it, there is an effect that the insertion of the tube can be performed without resistance, and the consumption of the claw portion of the elastic locking claw can be suppressed.

Further, by adopting the structure of the invention according to claim 6 or 7 , a large number of elastic locking claws can be provided on the cap body, and the locking portion between the pipe and the claw portion can be formed widely. This has the effect of strengthening the locking state of the pipe and increasing the pull-out strength, and also locks and releases the pipe at a small rotation angle for the operation of the cap body. It has the effect that it can be done.

[0087] Also, by adopting the configuration of the invention according to claim 8, has the effect of an end portion of the elastic locking claws by rotating the cap member can be expanded with less resistance, and Since the number of the expanding portions can be reduced, the structure of the connector main body is simplified, and there is an effect that the manufacturing can be easily performed. In addition, when combined with the invention described in claim 5, the end of the elastic locking claw can be expanded by rotating the cap body with a small resistance, and the elastic locking via the expanding portion can be performed. The effect of reducing the distance between claws to increase the number of elastic locking claws and widening the locking area between the tube and the claw can be used to enhance the locking of the tube. Have.

Further, by adopting the structure of the ninth aspect of the present invention, the operation of expanding the end of the elastic locking claw can be reliably performed without rotating the cap body more than necessary. It has the effect of being able to do it.

Further, by adopting the structure of the invention as set forth in claim 10 or 11 , even in a place where it is difficult to rotate the cap body by hand, the rotation can be easily performed. It has an excellent effect on workability. Then, the configuration of the invention according to claim 12 is adopted.
By doing so, it is possible to install
The connection fitting body and the cap body are
Revolve a predetermined distance in the circumferential direction without disconnecting
Can be. Further, the configuration of the invention described in claim 13 is adopted.
By simply inserting the tube into the cap,
Can be connected in the stopped state, and rotate the connector body.
By doing so, the elastic locking claws of the cap
The engagement with the pipe can be released by elastically riding on the expanding portion.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment (first embodiment) of a pipe connector according to the present invention.

FIG. 2 is a cross-sectional view showing the position of the end of an elastic locking claw when locking the pipe in the pipe connector shown in FIG. 1;

FIG. 3 is a partial cross-sectional view showing a use state of the pipe connector shown in FIG. 1 when the pipe is locked.

4 is a cross-sectional view showing the position of the end of an elastic locking claw when releasing the locking of the pipe with respect to the pipe connector shown in FIG. 1;

FIG. 5 is a partial cross-sectional view showing a use state of the pipe connector shown in FIG. 1 when unlocking the pipe.

FIG. 6 is a cross-sectional view showing the position of the end of an elastic locking claw in a case where a pipe is locked in an example (second embodiment) in which an expanding portion is different.

7 is a sectional view showing a use state when releasing the lock of the tube for the example shown in FIG. 6;

FIG. 8 is a cross-sectional view showing the position of the end of an elastic locking claw in a case where a tube is locked in an example (third embodiment) in which an expanding portion is further different.

9 is a cross-sectional view showing a use state of the example shown in FIG. 8 when releasing the lock of the pipe.

FIG. 10 shows another embodiment of the pipe connector according to the present invention (fourth embodiment).
FIG. 6 is an exploded perspective view showing an example).

11 is a cross-sectional view showing the position of the end of an elastic locking claw when locking the pipe in the pipe connecting tool shown in FIG. 10;

12 is a cross-sectional view showing the position of the end of the elastic locking claw when releasing the locking of the pipe in the pipe connector shown in FIG. 10;

FIG. 13 is an exploded perspective view showing another embodiment (fifth embodiment) of the pipe fitting according to the present invention applied to a coupling.

FIG. 14 is an exploded perspective view showing still another embodiment (sixth embodiment) of the pipe fitting according to the present invention applied to a coupling.

FIG. 15 is a front view showing still another embodiment (seventh embodiment) of the pipe connector according to the present invention, showing a cap body.

FIG. 16 is a rear view of the cap body shown in FIG.

FIG. 17 is a sectional view of the cap body similarly shown in FIG.

FIG. 18 is a perspective view showing a connector main body to which the cap body shown in FIG. 15 is attached.

FIG. 19 is a partial cross-sectional view showing a mounted state of the cap body shown in FIG. 15 and the connector main body shown in FIG. 18;

20 is a partial cross-sectional view showing an elastic locking claw of the cap body shown in FIG.

FIG. 21 is a partial sectional view showing a position of an end of an elastic locking claw when locking a pipe in a seventh embodiment of the pipe connecting device according to the present invention.

FIG. 22 is a partial cross-sectional view showing a use state of the seventh embodiment of the pipe connector according to the present invention when the pipe is unlocked.

FIG. 23 is a perspective view showing a rotation structure of a cap body in a seventh embodiment of the pipe connection device according to the present invention.

FIG. 24 is a perspective view showing a pivoting structure of a cap body for a seventh embodiment of the pipe connector according to the present invention.

FIG. 25 is a sectional view showing a usage example of the seventh embodiment of the pipe connection device according to the present invention.

FIG. 26 is a perspective view showing a pipe connector of an example (eighth embodiment) having a different rotation structure.

FIG. 27 is a perspective view showing a use state of the pipe connector shown in FIG. 26.

FIG. 28 is a front view showing a cap body according to still another embodiment (ninth embodiment) of the pipe connection device according to the present invention.

FIG. 29 is a rear view of the cap body shown in FIG. 28.

FIG. 30 is a sectional view of the cap body also shown in FIG. 28.

FIG. 31 is a perspective view showing a connector main body to which the cap body shown in FIG. 28 is attached.

FIG. 32 is a cross-sectional view showing a state in which the cap body shown in FIG. 28 and the connector main body shown in FIG. 31 are mounted.

FIG. 33 is a partial sectional view showing a position of an end of an elastic locking claw when a pipe is locked in a ninth embodiment of the pipe connecting device according to the present invention.

FIG. 34 is a partial cross-sectional view showing a ninth embodiment of the pipe connection device according to the present invention in a state where the pipe is unlocked;

FIG. 35 is an exploded perspective view showing a conventional example of a pipe connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connector main body 11 Receptacle 12 Expansion part 13 Notch part 20 Cap body 21 Elastic locking claw 22 Claw part 23 End part

Claims (13)

(57) [Claims] 1. A connector body having a socket into which a pipe is inserted, and a cap body rotatably mounted on the socket of the connector body so as to be rotatable only in the circumferential direction. An elastic locking claw having a claw portion for locking a tube inserted into the socket of the connector main body protruding inward is provided on an inner side, and the rotation of the cap body is provided at the socket of the connector main body. A pipe connector characterized by comprising an expanding portion for slidingly contacting an end portion of an elastic locking claw in a circumferential direction with the end to expand the end portion. 2. The pipe connector according to claim 1, wherein at least one of the end of the elastic locking claw and the enlarged portion has a slope inclined in the circumferential direction. 3. An expansion portion of a connecting member main body and an elastic member of a cap body.
At least one of the ends of the locking pawl has a circumferential surface
Characterized in that it is formed with an inclined surface inclined in the direction
Item 3. The pipe connector according to Item 1 or 2. 4. A cap between the cap body and the connector body.
The cap body is returned to the state before rotation against the rotation of the cap body.
A biasing member for biasing in the direction of rotation is interposed.
The pipe connector according to claim 1 or 2, wherein 5. The pipe connector according to claim 1, further comprising a holding portion for holding the rotated cap body at a position where the end of the elastic locking claw is expanded. 6. The method of claim 1請, characterized in that the ends of the elastic locking claws formed by forming a shorter width than the claw width of locking claw
The pipe connector according to claim 5 . 7. An end of the elastic locking claw is formed to have a width shorter than the claw width of the locking claw, and a part or all of the expanded portion is arranged within the claw width of the locking claw. 3. The method according to claim 1, wherein
The pipe connector according to claim 5 . 8. The structure according to claim 1, wherein the ends of the plurality of elastic locking claws are expanded by one expanding portion.
The pipe connector according to claim 7 . 9. One of the connector body and the cap body
To form a contact portion on the other hand ,
The abutting portion is brought into contact with one of the
9. The device according to claim 1 , further comprising a detent portion for preventing the cap body from rotating more than a predetermined amount.
Or the pipe connector according to claim 1 . With 10. The cap body provided with spigot driver to claim 1 to claim characterized in that it comprises providing a support unit for operating the driver plugged into the spigot to connector body The pipe connector according to any one of claims 9 to 10 . 11. any of claims 1 to 10 gripping possible gripping allowance in the rotation direction of the cap body, characterized by comprising respectively provided on the connector body and the cap body 1
The pipe fitting according to the paragraph . 12. Each of the connector body and the cap body,
Can be rotated by a predetermined distance in the circumferential direction and can not be removed.
A fitting part is provided, wherein the fitting part is provided.
12. The pipe connector according to claim 11. 13. The elastic locking claw of the cap body extends outward.
It will open and deform and return to the original shape to lock to the pipe and
The pressing of the expanding portion accompanying the rotation of the connector body causes the
Retract elastically on the widened part to release the lock with the pipe.
13. The method according to claim 1, wherein the opening is performed.
The pipe connector according to claim 1.