JP2002372182A - Pipe connecting socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with several pipe diameters with one kind of socket, and to easily remove a pipe connected by mistake. SOLUTION: A lock claw 12 having a claw part 13 projecting from the inner surface of the socket 1 for insertion of the pipe P is formed, inclining inward in relation to the peripheral surface of the socket 1. A depth side of the socket 1 is formed with an inclined surface 17 inclined so that the pipe P to be connected abuts thereon and comes close to the lock claw 12 pushing direction. An outer side of the lock claw 12 is provided with a hook-like operation piece 14 for engagement of a tool. The tool is engaged with the operation part 14, and pulled upward to elastically move the lock claw 12 continuously provided to the operation part 14 in the radius enlarging direction to release the engagement of the pipe P with the claw part 13, and the pipe P is removed from the socket 1.

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, or a pipe connection socket formed in a box, an end cover, or the like.

[0002]

2. Description of the Related Art Conventionally, as a pipe connection port, as shown in FIG. 7, an elastic piece having a U-shaped slit 71 formed around a cylindrical port 7 into which a pipe is inserted to have elasticity. To form
There is known an elastic piece integrally provided with a locking claw 72 formed with a claw for connecting a pipe to an inner surface thereof. When the pipe is inserted into the socket 7, the locking claw 72 expands outward and climbs over the crest of the pipe. The pipe is elastically restored and can be engaged with the valley of the pipe to connect the pipe in a retaining state, so that the pipe can be easily connected.

[0003]

However, the conventional pipe connection port cannot cope with a plurality of pipe diameters. Also, although the pipe can be easily connected simply by inserting it, the pipe once locked in the port cannot be easily removed, and it takes time to remove the pipe, and sometimes the port must be broken and removed. Had to be done.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pipe connection port that can handle a plurality of pipe diameters with one type of port. It is another object of the present invention to provide a pipe connection port that can be easily removed even if a pipe is erroneously connected to the port.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is based on an invention that an elastically deformable locking claw that projects from an inner surface of a receiving port into which a pipe is inserted and locks the pipe. Wherein the locking claw is formed so as to be inclined inward with respect to the peripheral surface of the receiving port, and on the back side of the receiving port,
The pipe connection port "is characterized in that the pipe to be connected is formed in such a manner that the pipe to be connected comes into contact with and forms an inclined surface portion which is inclined so as to correspond to the pressing direction of the locking claw.

According to a second aspect of the present invention, a tool is engaged with the outer side of the locking claw to disengage the locking state of the pipe by causing the locking claw to extend in a radially expanding direction. 2. The pipe connection port according to claim 1, wherein an operation unit is formed.
Is the content. Therefore, even if the pipe is erroneously connected to the receiving port, the locked state of the pipe can be released by engaging the tool with the operating part and causing the locking claw to be in the diameter-expanding direction. The tube can be removed with.

According to a third aspect of the present invention, there is provided the method according to the first aspect, wherein the operation portion is formed in a hook shape.
Or, the pipe connection receptacle according to claim 2 ". Therefore, even if the pipe is erroneously connected to the receiving port, the locked state of the pipe can be released by engaging the tool with the operating portion and causing the locking claw to move in the radially expanding direction. The tube can be removed with. In addition, since the operating portion is formed in a hook shape, for example, the tip of a flathead screwdriver is engaged with the lower surface of the bent portion of the operating portion, so that the locking claw can easily be made to extend in the diameter increasing direction.

The invention according to claim 4 is characterized in that the contact hole is formed with a contact portion serving as a fulcrum when the engaging claw is turned in the radially expanding direction by a tool. The pipe connection receptacle according to claims 1 to 3 is the content thereof. Therefore, the tool can be engaged with the operating portion, and the tool can be brought into contact with the contact portion, so that the locking claw can be made to extend in the radially enlarged direction, and the pipe releasing operation can be performed extremely easily. It has become.

According to a fifth aspect of the present invention, there is provided a pipe connection port according to the fourth aspect, wherein the contact portion is formed on a side of the port. I have.
Therefore, the tool can be engaged with the operating portion, and the tool can be brought into contact with the contact portion, so that the locking claw can be made to extend in the radially enlarged direction, and the pipe releasing operation can be performed extremely easily. It has become. Further, since the contact portion is formed on the side of the receiving port, the connected pipe does not hinder the releasing operation.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pipe connection port according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the receiving port 1 is formed of a synthetic resin into a substantially cylindrical shape having an opening 11 into which a pipe is inserted. Such a receiving port 1 is provided with a connector for connecting a pipe to a box, a pipe connection tool such as a coupling for connecting a pipe to a pipe, an attachment of a switch, an outlet and the like, and a fluid such as hot water, water, gas and the like. It is formed in a box or the like used for storing a joint connected to a pipe.

One end is integrally formed on the peripheral surface of the receiving port 1, and a locking claw 12 that is elastically deformable in the radial direction of the receiving port 1 is formed using the one end as a fulcrum. This locking claw 12
Has a claw portion 13 which engages with a tube protruding and inserted into the receptacle 1. The claw portion 13 has a structure that engages with the valley portion in the case of a corrugated tube and engages with the tube by cutting into the outer peripheral surface of a smooth tube. In order to facilitate the insertion, the end surface on the insertion side is formed by an inclined surface. A hook-shaped operating portion 14 with which a tool or the like is engaged is formed outside the free end of the locking claw 12, and the tool is engaged with the operating portion 14 to move the locking claw 12 in the radially expanding direction. It can be made to take off.

On the side of the receiving port 1, there is formed a contact portion 15 serving as a fulcrum when the locking claw 12 is turned in the radially expanding direction by a tool. Therefore, as shown in FIG. 6, the tool 2 is engaged with the lower surface of the bent portion of the operation portion 14, and the tool 2 is brought into contact with the contact portion 15, and the tool 2 is operated by levering up. The claws 12 can be made to be bent in the diameter-expanding direction, so that the pipe can be released very easily. In addition, the contact part 15 is the socket 1
, So that the release operation can be performed without the connected tube being in the way. In the embodiment, the contact portion 15 is formed on the side of the socket 1. However, in the present invention, the contact portion 15 may be located anywhere around the locking claw 12.

The locking claw 12 shown in this embodiment is formed so as to be inclined inward with respect to the peripheral surface of the receptacle 1 so as to correspond to a plurality of pipe diameters. That is, as shown in FIG. 2, by inserting the pipe P, the claw portion 13 can be engaged with the valley of the pipe to connect the pipe P. As shown in FIG. 3, the pipe P of FIG. When connecting a pipe P 'having a diameter larger than P, the locking claw 12 is inserted by inserting the pipe P' in FIG.
In this case, the flexible claw portion 13 is engaged with the valley portion of the pipe in the direction of opening to connect the pipe P ′. As described above, when the locking claw 12 is provided to be inclined inward with respect to the peripheral surface of the socket 1, a large-diameter pipe P ′ that can be inserted into the socket 1.
To the small-diameter pipe P in which the claw portion 13 can engage with the valley of the pipe. Therefore, in the case of the conventional pipe connection port, it was necessary to prepare a port corresponding to each pipe diameter depending on the diameter of the pipe to be connected. It can correspond to the pipe diameter, and there is no need to prepare a plurality of types of ports.

Further, a contact wall 16 is formed on the back side of the receiving port 1 so as to contact the pipe P and restrict the insertion of the pipe P, so that the pipe P cannot be inserted any more. An inclined surface portion 17 is formed on the inner side of the receiving port 1 (in the embodiment, on the upper side of the contact wall) so as to incline the pipe to be connected in the pressing direction of the locking claw. This inclined surface 17 is shown in FIG.
As shown in FIG. 3, by connecting the pipe P, the pipe P comes into contact with the inclined surface portion 17 and acts to push the pipe P in the pressing direction (downward in the embodiment) of the locking claw 12. . Therefore, even if pipes of a plurality of diameters are connected, the pipe P can be communicated with the pipe P and the opening at the back side of the receiving port by turning the pipe P downward. Further, the pipe P is formed by the locking claw 12 and the inclined surface portion 17.
, The pipe P can be reliably brought into contact with the inner peripheral surface of the receptacle 1, so that the pipe P can be connected stably without being twisted. In addition, the inclined surface portion 17
Is a hook which is brought into contact with the pipe, and the hook 12
It may be formed at a plurality of locations as long as it can be pressed in the pressing direction.

In the case where such a receiving port 1 is used, as shown in FIG.
By forcibly inserting the pipe P, the locking claw 12 can be inserted into the receiving port 1 while being bent in the radially expanding direction, and the pipe P can be locked by the claw portion 13 in a retaining state.
When the user wants to remove the pipe P, as shown in FIG. 5, the tip of the screwdriver 2 is engaged with the lower surface of the bent portion of the operating portion 14 and pulled up, so that the locking claw 12 In the diameter-expanding direction, whereby the engagement between the tube P and the claw portion 13 is released, and the tube P from the socket 1 can be removed. In addition, locking claw 1
6 can be easily achieved by raising the locking claw 12 with the contact portion 15 on the side of the receptacle 1 as a fulcrum, as shown in FIG.

Although the embodiment is configured to correspond to a plurality of pipe diameters, in the present invention, it is not necessary to be able to support a plurality of pipe diameters. 14
What is necessary is just to be formed. Further, in the embodiment, the operation portion 14 is formed in a hook shape, but in the present invention, any other shape may be used as long as a tool can be engaged. Further, in the embodiment, a minus driver is used as a tool. However, in the present invention, any other tool may be used as long as it can be engaged with the operation unit, or a dedicated tool may be used. Further, in the embodiment, the operating portion 14 is formed at the outer end portion of the locking claw 12, but in the present invention, a tool is engaged with the operating portion 14 so that the locking claw 12 is expanded in the radial direction. As long as it can be formed, it may be formed anywhere on the outer side of the locking claw 12. Further, in the embodiment, the locking claw 12 is provided at one place, but in the present invention, it may be provided at a plurality of places.

[0017]

As described above, according to the present invention,
One kind of port can handle multiple pipe diameters. In addition, by engaging the tool with the operation unit and pulling up the locking claw, it is possible to easily remove the pipe erroneously connected to the receptacle. Further, since the structure is extremely simple, it can be easily manufactured by integral molding with a synthetic resin, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a pipe connection port according to the present invention.

FIG. 2 is a cross-sectional view showing a state where the pipe is locked in the pipe connection port shown in FIG.

FIG. 3 is a cross-sectional view showing a state where the pipe is locked in the pipe connection port shown in FIG. 1;

FIG. 4 is a sectional view showing a state in which a pipe is connected to the pipe connection port shown in FIG. 1;

FIG. 5 is a cross-sectional view showing a state in which the lock of the pipe connected to the pipe connection port shown in FIG. 1 is released.

FIG. 6 is a view showing a state in which the lock of the pipe connected to the pipe connection port shown in FIG. 1 is released.

FIG. 7 is a perspective view showing a conventional pipe connection receptacle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe connection socket 2 Tool 11 Opening 12 Locking claw 13 Claw part 14 Operation part 15 Contact part 16 Contact wall 17 Inclined surface part P, P 'pipe

Claims (5)

[Claims] 1. A pipe connection port having an elastically deformable locking claw that protrudes from an inner surface of a port into which a pipe is inserted and locks the pipe, wherein the port has a plurality of pipe diameters. The locking claw is formed inwardly and inclining toward the tube insertion direction with respect to the peripheral surface of the receiving port, and a pipe to be connected is provided on the back side of the receiving port. A pipe connection socket, wherein an inclined surface portion is formed so as to be in contact with the locking claw and to be inclined in accordance with the pressing direction. 2. An operation portion, on the outer side of the locking claw, which is engaged with a tool for displacing the locking claw in a radially expanding direction and releasing the locked state of the tube. Claim 1.
Pipe connection port as described. 3. The pipe connection port according to claim 1, wherein the operation portion is formed in a hook shape. 4. The receiving port according to claim 1, wherein a contact portion serving as a fulcrum when the engaging claw is turned in a radially expanding direction by a tool is formed in the receiving port. Inlet for pipe connection. 5. The pipe connection port according to claim 4, wherein the contact portion is formed on a side of the port.