JP2004144161A - Flexible joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To visually confirm whether a flexible joint is firmly bonded with a connecting object through a bonding agent or not. <P>SOLUTION: The flexible joint 1 comprises a resin body 2 in which an outer diameter is formed with a spiral corrugation, and a resin socket 3 integrally fixed on at least one end of the body 2 and forming its inner diameter coping with the outer diameter of the connecting object. The socket 3 is designed to be transparent or semi-transparent. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flexible joint.
[0002]
[Prior art]
Conventionally, when installing a washing machine, the waterproof pan is fixed on the floor, a drain trap is provided at the drain of the waterproof pan, and a drain pipe is connected to the drain of the drain trap under the floor to drain the water from the washing machine. Through a waterproof pan, a drain trap and a drain pipe.
[0003]
In this case, the drain port of the drain trap and the drain pipe may not be arranged on the same axis due to construction restrictions. For this reason, the drain port of the drain trap and one end of the drain pipe are connected via a flexible joint.
[0004]
For example, as shown in FIGS. 2 and 3, the flexible joint 101 includes a resin main body 102 whose outer shape is formed in a spiral waveform, and a resin socket fixed integrally to both ends of the main body 102. 103, and even if the axis of the drain port 12a of the drain trap 12 provided at the drain of the waterproof pan 11 and the axis of the drain pipe 13 are shifted over a certain angular range, Since the main body 102 has flexibility, the socket 103 can be firmly bonded to the drain port 12a of the drain trap 12 and one end of the drain pipe 13 via an adhesive, and the drain of the washing machine can be smoothly performed. Can be discharged.
[0005]
Here, the outer peripheral surface of one socket 103 of the flexible joint 101 is fitted to the inner peripheral surface of the drain port 12 a of the drain trap 12, and the inner peripheral surface of the other socket 103 is fitted to the outer peripheral surface of the drain pipe 13. Mated.
[0006]
[Problems to be solved by the invention]
By the way, when connecting the flexible joint between the drain port of the drain trap and one end of the drain pipe, work is performed in the underfloor space, so the working environment is not necessarily good. If the drain port of the trap or one end of the drain pipe is not firmly bonded with a sufficient amount of adhesive, or if the adhesive was not applied due to operator's negligence, the drainage from the washing machine is received. As a result, the flexible joint may come off from the drain port or the drain pipe of the drain trap. When the flexible joint comes off, the drainage of the washing machine leaks into the underfloor space, and particularly in an apartment house, there is a high possibility that the drainage leaking under the floor will cause unexpected damage to dwelling units below the floor.
[0007]
In addition, it is not possible to determine from the external appearance whether the flexible joint and the drain port of the drain trap or one end of the drain pipe are firmly bonded, or whether the adhesive is applied. At the time or during periodic inspection, the connection between the flexible joint and the drain port of the drain trap or one end of the drain pipe must be checked directly by hand in the underfloor space, and the operation becomes complicated.
[0008]
The present invention has been made in view of such a problem, and provides a flexible joint that can reliably grasp whether or not a connection target is firmly connected via an adhesive. .
[0009]
[Means for Solving the Problems]
The present invention provides a flexible body comprising: a resin main body having an outer shape formed in a spiral waveform; and a socket integrally fixed to at least one end of the main body and having an inner diameter corresponding to an outer diameter to be connected. In the joint, the socket is transparent or translucent.
[0010]
According to the present invention, after applying a sufficient amount of adhesive to an outer peripheral surface of a connection target such as a drain port or a drain pipe of a drain trap, and then fitting the socket of the flexible joint, the socket of the flexible joint becomes transparent or transparent. Since it is translucent, it is possible to grasp the application state of the adhesive that has wrapped around the outer peripheral surface of the connection target, including whether or not the adhesive has been applied through the socket.
[0011]
As a result, it can be easily grasped from the appearance whether or not the flexible joint is firmly bonded to the connection object via a sufficient amount of adhesive, and the flexible joint can be reliably prevented from falling off from the connection object. be able to.
[0012]
In this case, it is preferable that the adhesive be colored, since the state of adhesion between the flexible joint and the connection target by the adhesive can be grasped at a glance.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 shows an embodiment of a flexible joint 1 according to the present invention.
[0015]
The flexible joint 1 includes a main body 2 and a socket 3 integrally fixed to each edge of the main body 2.
[0016]
The main body 2 is made of resin, for example, soft vinyl chloride, and has an outer shape formed in a spiral waveform and has flexibility. A spiral reinforcing core member 4 made of hard vinyl chloride is housed in the main body 2, and lock rings 5 made of hard vinyl chloride are integrally provided at both ends on the outer peripheral surface side. I have.
[0017]
The socket 3 is made of resin, for example, transparent hard vinyl chloride, and has a receiving portion 30 on one end side thereof, which can accommodate the main body 2 and the lock ring 5 provided on the end thereof. That is, the receiving portion 30 includes an inner flange 31 extending so as to protrude outward over the entire periphery of the end face opening, and an inner peripheral surface of the main body 2 and a lock ring from the outer peripheral surface of the inner flange 31. An outer flange 32 extending so as to protrude outward such that the inner peripheral surface is located at a distance corresponding to the distance between the outer peripheral surfaces of the outer peripheral surface of the outer peripheral surface of the outer peripheral surface of the outer flange 32; A water-swellable packing 6 is provided in a deep portion of a space defined by an outer peripheral surface of the inner flange 31 and an inner peripheral surface of the outer flange 32.
[0018]
The other end of the socket 3 has a diameter corresponding to the diameter of the drain port 12 a of the drain trap 12 to be connected and the diameter of the drain pipe 13. Specifically, one socket 3A is formed in an insertion hole having an outer diameter corresponding to the inner diameter of the drain port 12a of the drain trap 12, and the other socket 3B corresponds to the outer diameter of the drain pipe 13. It is formed in an inner diameter receiving port.
[0019]
The flexible joint 1 thus configured is filled with an adhesive after the water-swellable packing 6 is inserted into the space of the receiving portion 30 of each socket 3, and each edge of the main body 2 including the lock ring 5 is filled. It is assembled by fitting the part into the receiving part 30 of the socket 3 and curing the adhesive.
[0020]
In order to connect the drainage port 12a of the drainage trap 12 and one end of the drainage pipe 13 using the flexible joint 1, the inner peripheral surface of the drainage port 12a of the drainage trap 12 and A colored adhesive is applied to the outer peripheral surface of one end of the drain pipe 13 to fit one of the sockets 3A of the flexible joint 1 into the drain port 12a of the drain trap 12, and to the other receptacle side. The socket 3B may be fitted to one end of the drain pipe 13. At this time, even when the axis of the drain port 12a of the drain trap 12 and the axis of the drain pipe 13 are not located on the same axis, the main body 2 of the flexible joint 1 is flexible. By having the property, the connection work can be easily performed.
[0021]
The connection state between the socket 3B on the receiving side of the flexible joint 1 and the drainage pipe 13 by the adhesive is colored because the socket 3 is transparent and wraps around the outer peripheral surface of the drainage pipe 13 through the socket 3. It can be grasped by the application state of the adhesive.
[0022]
As a result, the connection state of the socket 3 of the flexible joint 1 and the drain pipe 13 by the adhesive can be grasped from the appearance thereof, including the case where the adhesive is forgotten to be applied. Therefore, the connection without applying the adhesive or the connection with an insufficient amount of the adhesive can surely prevent the flexible joint 1 from dropping from the drainage pipe 13 and perform inspection and the like. Can be done easily.
[0023]
In the above-described embodiment, the case where the socket 3 is formed of a transparent vinyl chloride resin has been illustrated. However, the socket 3 may be translucent, and the type of the resin is not limited to the vinyl chloride resin. For example, an appropriate resin can be adopted. In this case, the resin of the socket 3 and the resin of the main body 2 do not necessarily have to be the same, and the flexible joint 1 can be formed by combining different resins.
[0024]
In addition, although one socket 3 is formed in the receptacle and the other socket 3 is formed in the insertion port, both sockets may be formed in the receptacle, that is, the socket having the inner diameter corresponding to the outer diameter of the connection target. By forming both sockets in the receptacles, both connection states of the flexible joint 1 can be grasped.
[0025]
Furthermore, although the main body part 2 in which the reinforcing core material 4 is provided has been illustrated, it is not necessary to provide the reinforcing core material when strength is not separately required.
[0026]
【The invention's effect】
As described above, according to the present invention, the connection state with the connection target connected via the adhesive can be reliably grasped.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing one embodiment of a flexible joint of the present invention together with an object to be connected.
FIG. 2 is a side view, partially broken away, showing a state where a drain trap and a drain pipe provided on a waterproof pan are connected via a flexible joint.
FIG. 3 is a plan view showing a state where the drain trap and the drain pipe shown in FIG. 2 are connected via a flexible joint.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flexible joint 2 Body part 3, 3A, 3B Socket 30 Receiving part 4 Reinforcement core material 5 Lock ring 6 Water-expandable packing 11 Waterproof pan 12 Drain trap 12a Drain port 13 Drain pipe

Claims (1)

In a flexible joint comprising: a resin main body whose outer shape is formed in a spiral waveform; and a socket formed integrally with at least one end of the main body and having an inner diameter corresponding to an outer diameter of a connection target, A flexible joint, wherein the socket is transparent or translucent.

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