JP2004225858A - Fixing device for pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing device for fixing a plastic joint, a piping header comprising that, and a cap of the highest strength in the plastic joint, that is sufficiently durable to dislocation or warping. <P>SOLUTION: This fixing device for a pipe joint comprises a fixing part 1 to a base plate and a holding part 2 for holding the cap in the plastic joint. The holding part 2 is provided with a tongue piece two-split and curved inward in a width direction to hold side surfaces of the cap. Lock means to lock each other are provided at a front end of the holding part 2. The rear side is rotatably supported by a leg part provided to stand on the fixing part 1, and a step part is formed to further extend inward from the rear end side. The cap is inserted from the front end, and the step part is pushed by the cap to actuate the lock means at the front end. It comprises a connection cylinder 3, the cap 6, the fixing device 20, the fixing part 21, the leg part 22, the holding part 23, and the tongue piece 23f. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fixture for fixing a plastic pipe joint on a horizontal or vertical base.
[0002]
[Prior art]
2. Description of the Related Art In recent years, relatively flexible plastic pipes have been used as water and hot water supply pipes even in detached houses including high-rise buildings. Typically, the plastic pipe is used to connect a piping header led from a water supply / hot water supply source and each device with the plastic pipe. The piping header is connected to a plastic pipe, a plastic pipe and each device, and furthermore, a plastic pipe. Joints are used for connection between the joints, and in recent years, plastic joints have been adopted for both the joints and the pipe headers. In particular, even in the case of a piping header, a piping header having a structure in which plastic joints are directly connected has been adopted.
[0003]
Hereinafter, the present invention will be described by taking a piping header to which plastic joints are connected as a representative. This type of piping header is usually fixed to a horizontal or vertical base such as concrete for use. . However, in the case of a piping header to which a plastic joint is connected, each joint is slightly moved at the connecting portion due to external stress or the like, so that a slight bending phenomenon occurs. Therefore, the fixture to be used must have a function of preventing this displacement and twist, but there is no fixture having such a function.
[0004]
FIG. 1 shows an example of a plastic joint, and FIG. 2 shows an example of a piping header to which the joint is connected. In this joint, the base 1 is made of polybutene, a flow path 2 penetrating through the base 1 is formed, and a connecting cylinder 3 is held on one side, and a holding mechanism 4 for holding the cylinder 3 on the other side. . In this example, a branch port 5 having a holding mechanism 4 branched from the flow path 2 is provided. The holding mechanism 4 is screwed with a cap 6 for supporting members constituting the holding mechanism. It should be noted that this is an example of a joint, and although not shown, it goes without saying that there is a joint without a branch port.
[0005]
In order to form a pipe header from such joints, the connecting cylinders 3 of a plurality of joints are inserted into the holding mechanism 4 in order, and a pipe header having a desired number of branch ports 5 is formed. However, the obtained pipe header is a pipe header in which the joints are continuously connected and the joint as a whole is bent as shown in the figure by the external force (the fixed position is displaced or twisted). Therefore, it is necessary that the fixture to be fixed on the base should endure this bending phenomenon and, if possible, have a function of preventing this phenomenon.
[0006]
Of course, even with similar joints used to connect plastic pipes or between equipment and plastic pipes, since the pipes are flexible, it is inevitable that the joints will turn or move. It is necessary to have a similar blocking function even when only the joint is used.
[0007]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technology, and provides a fixture for fixing a plastic joint and a piping header formed by connecting a plurality of the joints.
[0008]
[Means for Solving the Problems]
The gist of the present invention is a fixture for a pipe joint comprising a fixing portion 1 for fixing to a base and a holding portion 2 for holding a cap of a plastic joint, wherein the holding portion 2 is divided into two and bent inward in the width direction. And a tongue for sandwiching the side surface of the cap, and further have a locking means for locking the front end of the holding portion 2 with each other, and the rear end side is rotatably supported by a leg erected on the fixed portion 1. A fixture for a pipe joint, wherein a tread portion extending further inward from the rear end side is formed, a cap is inserted from the front end, and the tread portion is pushed by the cap to actuate the locking means at the front end. It is.
[0009]
And the pipe joint is made of plastic, and the fixture is preferably made of metal. Of course, as described above, it goes without saying that the category of the pipe joint of the present invention includes a pipe header connected with the pipe joint.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention is as described above, in which the strongest portion constituting the joint is fixed with the holding portion, and furthermore, by forming a tongue piece that sandwiches the side surface of this cap, it is possible to prevent displacement and twisting In addition, even if misalignment or torsion occurs, the holding portion is displaced or twisted almost integrally with the cap, so that the fixed portion and the joint do not come off.
[0011]
As an example of a plastic joint, the base is made of plastic such as polybutene, a flow path penetrating the base is formed, a connecting cylinder is provided on one side, and a holding mechanism for holding the cylindrical body on the other side. It is configured. And, for example, it is provided with a branch port having a holding mechanism branched from the flow path. Representative examples of the holding mechanism include an O-ring, a grab ring, and a cap that supports these and is screwed to a base. It should be noted that the joint holding mechanism is not limited to this.
[0012]
【Example】
Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 3 is a sectional view showing an example of the joint according to the present invention, and reference numerals 1 to 6 are as described above. Now, in the holding mechanism 4 for holding the cylindrical body 3, step 2 in ₁ O- ring 7 and pipe holding ring 8 of the channel 2 is incorporated, are These were supported by the cap 6 structure .
[0013]
The pipe header 10 uses a plurality of the above-mentioned joints, and sequentially connects the connecting cylinders 3 into the holding mechanism 4 to connect them. The surface of the connecting cylinder 3 is engaged with the not-shown claws of the O-ring 7 and the pipe holding ring 8 and the joints are sequentially fixed to form the piping header 10. The branching port 5 is provided with the holding mechanism 4 described above as it is. Now, since this pipe header-10 is one in which each joint is connected to the connecting cylinder with a holding mechanism, when an external force is applied, the pipe header is bent at the connecting portion as shown in FIG. It may be.
[0014]
The present invention employs a fixture having a special configuration for this purpose. FIG. 4 is a front view of the fixture of the present invention, and FIG. 5 is a side view thereof.
[0015]
The fixing device 20 of the present invention is made of metal, and 21 is a fixing portion to a base having a substantially rectangular shape. A long hole 21a for attachment to the base is drilled in the center, and the periphery thereof is erected in a flange shape. The strength has been increased. A pair of legs 22, 22 is raised from opposing sides of the fixed portion 21, and pins 22 a, 22 a are provided at the front ends thereof. Reference numeral 23 denotes a holding portion, which is divided into two holding portions 23a and 23b, and the inner peripheral surface of the holding portion 23 has an arc surface that is substantially equal to or slightly smaller than the outer shape of the cap 6. The front ends of the holding portions 23a and 23b have locking means for locking each other. Specifically, an outward projection 23c is formed on the 23b side, and a locking portion 23d which is hooked to this is formed on the 23a side. It is provided. Holes 23e for receiving the pins 22a and 22b are formed outside the rear ends of the holding portions 23a and 23b, and the holding portions 23a and 23b are rotatably supported. The width edges of the holding portions 23a, 23b are provided with tongue pieces 23f, 23f that curve inward and hold the side surfaces of the cap. Further, tread portions 23g, 23g extending further inward than the rear ends of the holding portions 23a, 23b are provided.
[0016]
Now, a case where the pipe header 10 is fixed by the fixing tool 20 is shown in FIG. FIG. 6 is a side view showing the relationship between the fixture 20 and the joint. First, the fixture 20 is fixed at a predetermined position on the base. The fixture 20 is fixed with a bolt (not shown) using the above-described elongated hole 21a. Then, the cap 6 of the joint constituting the pipe header 10 is inserted from the front ends of the holding parts 23a, 23b, the tread parts 23g, 23g are pressed strongly, the front end is closed, and the projection 23c and the hook part 23d are hooked. It is to stop. For this reason, the cap 6 is pressed almost all around by the holding portions 23a and 23b, and the side surface of the cap 6 is held between the tongue pieces 23f and 23f, so that the pipe header 10 is fixed here. Tool 20.
[0017]
Since the fixture 6 has a structure that holds down the cap 6 having the highest strength in the joint (pipe header), almost the entire outer periphery, and furthermore, the side surface thereof, the joint (pipe header) is displaced. Has a function of correcting the displacement by strongly pressing the cap 6, and even if the displacement or torsion occurs, the fixing device 20 that completely clamps the cap 6 does not come off from it, and behaves as a unit. There is a feature.
[0018]
The fixing device 20 of the present invention is desirably made of metal as described above from the viewpoint of strength, but is not necessarily limited to this, and may be a high-strength plastic fixing device. Needless to say. FIG. 7 is a side view showing the plastic fixture 30. In this example, the fixing portion 31, the leg 32, and the holding portion 33 to the base are integrally formed respectively, and the leg 32 and the pair of holding portions are formed. The connecting portion with the shaft 33 is made slightly thinner so as to have flexibility and to be rotatable. The inner peripheral surface of the holding portion 33 is an arc surface that is equal to or slightly smaller than the outer shape of the cap 6 as in the previous example. The front ends of the holding portions 33a and 33b are provided with uneven portions 33d as locking means. Further, tongues 33f, 33f are provided on the left and right edge portions of the holding portions 33a, 33b inward to hold the cap 6 from the left and right, and 33g is a step portion.
[0019]
When fixing the joint with the fixing device 30, the outer periphery of the joint cap 6 is surrounded by the holding portions 33a and 33b, and the left and right edges are sandwiched by the tongue pieces 33f and 33f, as in the previous example. The fixing is performed by fitting the concave and convex portions 33d as locking means.
[0020]
It should be noted that the joint of the present invention is not limited to the above-described one, and FIG. 8 shows another example of the joint. That is, be one that a stepped portion 2 in ₁ and O- ring 7 and collar -9 is built, construction of the color -9 bites into the surface of the pipe or the like to be inserted is provided with a pawl (not shown) on its inner side The outer surface of the collar 9 has an inclined surface 9a. On the other hand, on the inner peripheral side of the cap 6, an inclined surface 6a facing the inclined surface 9a is formed. It has an automatic tightening structure in which an inward force is applied to further tighten a pipe or the like.
[0021]
【The invention's effect】
The present invention is a fixture having the above-described configuration, in which a cap having the highest strength among plastic joints is fixed, the fixing strength is high, and the joint is sufficiently displaced and twisted. It became a durable fixture, and its practical value is extremely high.
[Brief description of the drawings]
FIG. 1 is a side view of an example of a plastic joint.
FIG. 2 is a side view of a pipe header connected to the pipe header.
FIG. 3 is a sectional view showing a detailed example of a joint according to the present invention.
FIG. 4 is a front view of the fixing device of the present invention.
FIG. 5 is a side view thereof.
FIG. 6 is a side view of a piping header using the metal fixture of the present invention.
FIG. 7 is a side view of the plastic fixture of the present invention.
FIG. 8 is a sectional view showing another example of the joint according to the present invention.
[Explanation of symbols]
1 ‥ Joint base,
2) a flow path through the base,
2 ₁段 Step in the flow path,
3 ‥ connecting cylinder,
4 ‥ cylinder holding mechanism,
5 ‥ branch,
6 ‥ cap,
7 ‥ O-ring,
8mm pipe retaining ring,
9 ‥ color,
10mm piping header
20, 30 ‥ fixtures,
21, 31 fixed part,
21a ‥ Slot for mounting,
22, 32 ‥ legs,
22a pin,
23, 23a, 23b, 33, 33a, 33b {holding part;
23c ‥ projection,
23d hanging part,
23e ‥ hole for pin
23f, 33f 舌 a tongue piece sandwiching the side of the cap,
23g, 33g tread.

Claims (4)

A fixing device for a pipe joint comprising a fixing portion 1 for fixing to a base and a holding portion 2 for holding a cap of a plastic joint, wherein the holding portion 2 is divided into two parts, and is bent inward in the width direction to form a side surface of the cap. It has a tongue piece to be sandwiched, and further has a locking means for mutually locking at the front end of the holding portion 2, the rear end side is rotatably supported by a leg erected on the fixed portion 1, and further from the rear end side A fixing device for a pipe joint, wherein a step portion extending inward is formed, a cap is inserted from the front end, and the step portion is pushed by the cap to activate the locking means at the front end. The fixture for a pipe joint according to claim 1, wherein the fixture is made of metal. The fixture for a pipe joint according to claim 1, wherein the pipe joint is made of plastic. The fixture for a pipe joint according to claim 1, wherein the pipe joint is a pipe header to which a plastic joint is connected.

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