JP3367833B2 - Pipe connection port - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connection tool such as a connector or a coupling, or a pipe connection port formed in a box or an end cover. The present invention relates to a pipe connection port that can easily remove a pipe that has been erroneously connected. 2. Description of the Related Art Conventionally, as a pipe connection port, as shown in FIG. 7, a U-shaped slit 71 is formed around a cylindrical port 7 into which a pipe is inserted, thereby increasing elasticity. Forming an elastic piece having
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, in the above-described conventional pipe connection port, although the pipe can be easily connected only by inserting the pipe, the pipe once locked to the port. Cannot be easily removed, it takes a long time to remove, and there is a problem that the receptacle must sometimes be destroyed and removed. The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a pipe connection port which can be easily removed even if a pipe is connected to the port by mistake. I have. [0005] In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that an elastically deformable member that protrudes from an inner surface of a receptacle into which a tube is inserted and locks the tube is provided. A pipe connection port having a locking claw, on the outer side of the locking claw,
A hook-shaped operating portion is formed, in which a tool is engaged so as to move the locking claw in the radially expanding direction and release the locked state of the pipe,
The receiving port has a laterally extending side of the receiving port in a radially expanding direction of the locking claw.
A pipe connection receiving member, which is provided with a projecting and abutting portion which is brought into contact with a tool inserted from the side, and which serves as a fulcrum when the locking claw is swept in the radial direction by the tool. mouth"
Is the content. 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 receptacle, the connected pipe does not hinder the releasing operation. 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 formed integrally with 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 around 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 face 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 which serves as a fulcrum when the locking claw 12 is turned in the radial 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 socket 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, and as shown in 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 receptacle 1, a large-diameter pipe P ′ that can be inserted into the receptacle 1.
To the small-diameter pipe P from 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 according to the diameter of the pipe to be connected. It can correspond to the pipe diameter, and there is no need to prepare plural kinds of receiving ports. Further, a contact wall 16 is formed in 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 so as to press the pipe P in the pressing direction of the locking claw 12 (downward in the embodiment). . 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 with the pipe P facing downward. Also, 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 the tube comes into contact with and the locking claw 12 is
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 can be inserted into the inside of the receptacle 1 while making the locking claw 12 bend in the radially expanding direction, and the pipe P can be locked in a locked state by the claw portion 13.
When the user wants to remove the pipe P, as shown in FIG. 5, the tip of the flathead screwdriver 2 is engaged with the lower surface of the bent portion of the operation portion 14 and pulled up, so that the locking claw 12 connected to the operation portion 14 is pulled up. In the diameter-expanding direction, whereby the engagement between the pipe P and the claw portion 13 is released, and the pipe 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, the present invention does not have 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. As described above, according to the present invention,
By engaging the tool with the operation unit and pulling up the locking claw, it is possible to easily remove the tube incorrectly 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 in which the pipe is locked at the pipe connection port shown in FIG. 1; FIG. 4 is a cross-sectional view showing a state where a pipe is connected to the pipe connection port shown in FIG. 1; FIG. 5 is a cross-sectional view showing a state where 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 port. [Description of Signs] 1 Pipe connection socket 2 Tool 11 Opening 12 Locking claw 13 Claw section 14 Operation section 15 Contact section 16 Contact wall 17 Inclined surface section P, P 'pipe

Claims (1)

(57) 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, On the outer side of the locking claw, a hook-shaped operating portion is formed, in which the tool is engaged to make the locking claw extend in the radial direction and release the locked state of the tube, In the mouth, on the side of the receiving port, in the radially expanding direction of the locking claw
A pipe connection receiver characterized in that a projecting and a tool inserted from the side comes into contact with each other, and a contact portion serving as a fulcrum when the locking claw is made to expand in the radial direction by the tool is formed. mouth.