JP2000291871A - Saddle and band for soft tube snap tap with saddle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water leakage from a bored hole and directly use a water pressure inspection device for an existent snap tap with a saddle by forming a single recess part or a plurality of recess parts having a predetermined depth and a predetermined area shape on a pipe contact inner circumferential face of a saddle. SOLUTION: A saddle 3 is constructed of a curved part having a pipe contact inner circumferential face 30a, which is provided with a curvature corresponding to an approximately half of the outer circumference of a soft tube 5 and a predetermined width, and a flange part 31 extended almost orthogonally from a tube body circumferential face in both ends of the curved part. In the flange part 31, a fastening hole 31a for passing a bottle serving as a fastening member is formed. On the pipe contact inner circumferential face 30a in the saddle 3, a recess part 34 with a predetermined depth is arranged in the part other than the periphery of a mounting port 32 for a snap tap 1, a part passing through the mounting port 32 and extending along the pipe body axis direction Y in the saddle 3 mounting time, and a part extending along the pipe body circumference directional X orthogonally crossing the part along the direction Y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saddle and a band of a faucet with a saddle attached to a water distribution pipe made of a soft pipe such as a polyethylene pipe.

[0002]

2. Description of the Related Art Conventionally, a water tap with a saddle has been used for water distribution from a water supply pipe to a water supply pipe to each household. The water supply pipe is mainly made of cast iron pipe, steel pipe, PVC pipe, or the like. Asbestos tubes were used. In recent years, flexible pipes made of resin, such as polyethylene, which are lightweight, bendable, and have excellent earthquake resistance, as well as corrosion resistance and long formability, have been widely used for water distribution pipes.

[0003] The attachment of a water faucet to a water distribution pipe composed of such a soft pipe tends to be displaced due to a small contact friction coefficient of the surface of the soft pipe, and there is a risk of water leaking from the mounting portion. For this reason, a convex rib formed on the inner peripheral surface of a saddle or a band for fastening and holding a water faucet is cut into the pipe so as to prevent displacement in the pipe axial direction or the pipe circumferential direction.

[0004]

However, in order to make the ribs bite all over the outer circumference of the soft tube,
If the ribs are lengthened, crossed, or arranged side by side to reduce the spacing between them and increase the number of ribs, the contact area between the ribs and the pipes increases, the amount of bite for each rib decreases, and instead the contact with the pipes This has led to a reduction in frictional force.

In order to obtain a greater slip resistance, it is conceivable to use a sharper rib shape. However, if a large number of such ribs are arranged, there is a risk that the pipe may be damaged and a crack may be formed. there were. In addition, if the diameter of the hole or the gasket is large with respect to the area of the contact portion between the pipe and the saddle, there is also a problem that the saddle must be enlarged to secure an effective rib function. Was.

Further, since the height and sharpness of the rib are apt to change from casting to casting, if the sharpness of the rib is insufficient, the rib does not bite sufficiently, and the amount of crushing of the gasket surrounding the perforated hole is insufficient. And leaked water. Even if the height and sharpness of the ribs are sufficient, the anticorrosion coating film accumulates around the ribs, and the height and sharpness of the ribs decrease after painting, so that the ribs may not bite into the pipe. Was. As described above, the formation of only the ribs has various disadvantages as described above.

Furthermore, in the process of testing the water pressure resistance of a product, a conventional water tap with a saddle for a cast iron pipe or a PVC pipe is, as shown in FIG.
A water pressure tester is used in which the saddle s is straddled via the fixing jig 6a and fixed in close contact with the saddle s. However, when the rib r is formed on the inner peripheral surface of the pipe of the saddle s as described above. However, since a large number of projections are formed on the contact surface with the fixed base, it is not possible to secure the adhesion with the fixed base 6, and the existing water pressure tester can be used as it is. There was a disadvantage that it could not be done. This greatly affected the work efficiency of the production process, and eventually increased the product cost.

However, depending on the shape of the rib r, the fixing base 6
Even if a concave portion compatible with the rib r is formed on the contact surface of
In addition to the dimensional accuracy of the ribs, the shape and arrangement of the ribs are different for each product, so that the ribs are not realistic. For this reason, under the present circumstances, a soft tube with both ends closed is sandwiched between a saddle and a band, a perforation hole is opened, and a water pressure test is performed, which is a very complicated operation.

Some saddles and bands are hollowed out and removed, and a soft tube is cut into the hollowed portion to obtain an anti-slip effect. However, the amount of bite is controlled. However, since the hollow portion does not come into contact with the soft tube, the holding force of the saddle and the band is reduced accordingly.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above problem. In mounting a water faucet to a soft pipe, the pipe shaft can be enlarged without increasing the size of a saddle even in the case of using a large-diameter hole or gasket. A new type of flexible pipe for the purpose of eliminating displacement in the pipe direction and circumferential direction, preventing water leakage from the perforated hole, and enabling the existing water pressure tester for a faucet with saddle to be used as it is. This is to provide a faucet with a saddle.

[0011]

To achieve the above object, the present invention is configured as follows. That is, it is a clamping and fastening means for attaching the water faucet (1) to the water pipe (5), and a band-shaped saddle (3) having an arcuate curved surface and a band ( In 4),
The saddle (3) is characterized in that one or two or more depressions (34) having a substantially predetermined depth and an area shape are arranged and formed on the inner peripheral surface (30a) of the pipe joint.

Preferably, the saddle (3) passes through a perforated hole (5a) for mounting a water faucet (1) on the inner peripheral surface (30a) of the pipe, and the axial direction (Y) of the pipe when the saddle (3) is mounted. ) And a portion (30d) along the circumferential direction (X) of the tube substantially orthogonal to the portion (30c), and the hole (5c).
a) A concave portion (34) is formed in a portion (30b) excluding the periphery.

Further, in a band (4) which is opposed to the saddle (3) of the faucet with a saddle for soft pipes, the band (4) has a substantially predetermined depth on the inner peripheral surface (40a) of the pipe. A depression (42) having an area shape is formed.

Preferably, the pipe at the time of attaching the band (4) passes through a position facing the hole (5a) position (40b) of the saddle (3) on the inner peripheral surface (40a) of the band (4). A portion (40c) along the body axis direction (Y) and a portion (40d) along the tube circumferential direction (X) substantially orthogonal thereto.
The recessed portion (42) is formed in a portion excluding. Further, it is preferable to arrange and form one or more convex ribs (43) around the concave portion (42) formed on the inner peripheral surface (40a) of the band (4).

In the above description, reference numerals in parentheses are provided for reference in order to facilitate understanding of the structure of the present invention, and it is a matter of course that the present invention is not limited to the form on the drawings.

[0016]

According to the above configuration, the present invention operates as follows. That is, the portion of the soft tube located in the dent portion penetrates into the dent portion side and abuts on the bottom surface of the dent portion, and the soft tube in the portion abutting on the rib is sandwiched by the soft tube in a state where the rib is bitten. You.

The inner peripheral surface of the pipe in the axial direction and the circumferential direction of the pipe around the mounting hole of the saddle where the recess is not formed is formed without deforming the periphery of the perforated hole of the soft pipe. And water leakage from the gasket is prevented.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a faucet with a saddle for a soft tube according to the present invention will be described in detail with reference to the drawings, but the scope of the present invention is limited to the embodiments described below. Not something.

FIG. 1 is a schematic perspective view showing a state of mounting a water faucet with a saddle for a soft tube of this embodiment, and FIG. 2 is a front view of a partial cross section showing the water faucet with a saddle for a soft tube of this embodiment. FIG. 3 is a bottom view of the saddle according to the present embodiment and FIG.
4 is a plan view and a cross-sectional view taken along line NN of the band of the present embodiment. FIG. 5 is a main part showing a state where the saddle and the band of the present embodiment are fitted to a pipe. It is an expanded sectional view.

A water faucet with a saddle 1 for a soft tube according to the present embodiment.
(Hereinafter, abbreviated as “water tap 1”) is a soft pipe 5 as a water distribution pipe (a PE pipe diameter of 75 mm was used in the present embodiment).
And water to a water supply pipe (not shown), and is mainly composed of a main body 2 and holding means, each of which is formed of a casting metal or the like.

The main body 2 of the water faucet 1 is screwed and attached to a mounting port 32 communicating with a pipe connecting inner peripheral surface 30a of the saddle 3, which will be described later. A water diversion port 20 for diverting water to a water supply pipe is provided, and a stopper rod 21 for opening and closing the water diversion port 20 is attached to the opposite side of the water diversion port 20.

A work port 22 is provided on the upper part of the main body 2 of the water faucet 1. After the water faucet 1 is attached to the soft tube 5 via the saddle 3, a hole is drilled from the work port 22. A perforation hole 5a is formed in the soft tube 5 using a hole means. It should be noted that the water faucet 1 itself is not the main feature of the present invention, and the detailed configuration thereof is omitted because it is an existing conventional configuration.

The holding means for attaching the water faucet 1 to the soft tube 5 comprises a saddle 3 and a band 4. The saddle 3 has a curved portion 30 having a curvature fitting a substantially half of the outer periphery of the soft tube 5 and a predetermined width (in this embodiment, about 90 mm) of a pipe contact inner peripheral surface 30 a, and tubes at both ends of the curved portion 30. Flange part 31 extending in a direction substantially perpendicular to the body surface
And consisting of The flange portion 31 has a fastening hole 31a for allowing the bolt 7 as a fastening member to pass therethrough.

Upper part of this saddle 3 (only in the drawing)
In addition, a mounting port 32 for mounting the water faucet 1 is provided, and a gasket 33 for closely attaching to the soft pipe 5 is provided around the mounting port 32 on the side of the pipe contact inner peripheral surface 30a. ing.

Further, a water faucet 1 is provided on the inner peripheral surface 30a of the curved portion 30 of the saddle 3 (the inner peripheral surface of the portion which comes into contact with the pipe).
And a portion 30c along the pipe axis direction Y when the saddle 3 is attached through the attachment port 32.
And a portion 30d along the circumferential direction X of the tube which is substantially perpendicular thereto.
And a predetermined depth (in this embodiment, 2 mm
) Recess 34 is provided.

Next, the band 4 on the opposite side of the saddle 3 when the tube is fastened has a curvature and a predetermined width (9 in the present embodiment) which are suitable for substantially half of the outer circumference of the soft tube 5 like the saddle 3 described above.
Curved portion 40 having a pipe contact inner peripheral surface 40a of about 0 mm)
And a flange portion 41 extending in a substantially right angle direction from both ends of the curved portion 40. The flange portion 41 has a fastening hole 41a for passing the bolt 7 as a fastening member.

Further, the pipe inner surface 40a of the curved portion 40 of the band 4 passes through a position 40b facing a single perforated hole 5a communicating with the water faucet 1, and the pipe body axial direction Y when the band 4 is mounted. A substantially rectangular recess 42 having a predetermined depth (about 2 mm in the present embodiment) is provided in a portion excluding a portion 40c along the circumferential direction and a portion 40d along the tube circumferential direction X substantially perpendicular to the portion 40c. are doing.

Further, a rib 43 having a predetermined length, which is protruded in a convex shape, is formed on the inner peripheral surface 40a of the pipe around the recess 42.
It is formed so as to be oriented along the tube axis direction Y or the tube body circumferential direction X.

[0029]

The operation of the embodiment constructed as described above operates as follows. First, saddle 3 and band 4
After the soft tube 5 is sandwiched from above and below under a prestressed state, and the soft tube 5 is clamped by fastening with bolts 7, a drilling machine is attached to the working port 22 to open a hole 5 a in the soft tube 5. This is the same as in the past.

The depression 3
The portions of the soft tube 5 located at 4 and 42 are recessed portions 34 and 4
2a, the bottom surfaces 34a, 42a of the recesses 34, 42
And the edges 34b, 4 around the recesses 34, 42
As the ribs 2b bite, the ribs 43 around the dents 42 of the band 4 bite into the outer peripheral surface 5b of the soft tube 5.
As a result, the outer peripheral surface 5b of the soft tube 5
In order to deform greatly at the peripheral portions 34b and 42b of 42,
This portion serves as a locking portion, and the pipe body axial direction Y and the pipe body circumferential direction X
Together with the contact frictional resistance between the bottom surfaces of the recesses 34 and 42 and the surface of the tubular body, the displacement in the tubular body axial direction Y and the tubular body circumferential direction X is prevented. .

In the saddle 3, the inner peripheral surface 3
0a, a portion 30c along the pipe axial direction Y when the saddle 3 is mounted through the perforated hole 5a for mounting a water faucet, and a portion 30d along the pipe circumferential direction X substantially orthogonal thereto, and Since the recessed portion 34 is formed in a portion other than the peripheral portion 30b of the perforated hole 5a, high rigidity is secured as the saddle 3, and the perimeter of the perforated hole 5a of the soft tube 5 is deformed even after the attachment. Without sticking to the gasket 33, water leakage from the gasket 33 is prevented.

Similarly, the band 4 also passes through a position 40b facing the perforation hole 5a of the saddle 3 and a portion 40c along the tube axial direction Y when the band 4 is mounted, and a tube substantially orthogonal to the portion. Since the concave portion 42 is formed in a portion excluding the portion 40d along the circumferential direction X, a high holding force for the soft tube 5 is maintained without impairing the rigidity.

Further, the outer peripheral surface 5b of the soft tube 5 which has entered the concave portions 34, 42 is formed on the bottom surface 34 of the concave portions 34, 42.
a, 42a, so that the contact area between the saddle 3 and the band 4 and the soft tube 5 is not reduced, and a sufficient contact friction resistance is secured.

Further, as shown in FIG. 6, since the ribs 43 are not provided on the saddle 3, if the saddle 3 is attached to the fixing base 6 of the conventional water pressure tester via the fixing jig 6a. Then, the water pressure test is performed as it is.

Subsequently, the results of measurement of the sliding resistance in the axial direction Y and the circumferential direction X of the tubular body using the saddle 3 and the band 4 of the present embodiment are shown in Table 1. The numbers in parentheses in Table 1 are values when the conventional example is set to 100.

From Table 1, it can be seen that, compared to the combination (A) of the conventional product, the combination (B) using the saddle as the product of the present embodiment and the band as the conventional product improves the slip resistance to almost 1.5 times that of the conventional product. And when both of them are the products of the present invention (C)
In this case, it was improved to almost twice the conventional level.

[0037]

[Possibility of Other Embodiments] In order to achieve the object of the present invention, the present embodiment can be modified as follows. That is, since the shape of the depression is not limited to this embodiment, it may be, for example, a circular shape. Further, the shape and arrangement position of the rib are not limited to the present embodiment.

[0038]

As described above, the present invention has the following effects. In other words, unlike a saddle or band partly cut away, the contact surface between the outer peripheral surface of the soft tube and the bottom surface of the concave portion and the peripheral edge of the concave portion slide in the axial direction of the tubular body or the circumferential direction of the tubular body. In order to generate resistance,
The displacement in the axial direction of the tube and the circumferential direction of the tube can be effectively prevented.

Therefore, a larger slip resistance can be secured with a small area of the inner circumferential surface of the tube, so that a saddle and a band smaller than before can be obtained. In addition, by forming no recess on the inner peripheral surface of the pipe in the axial direction and the circumferential direction of the pipe around the mounting hole of the saddle, the shape of the flexible pipe can be maintained even when the flexible pipe is fastened. Adhesion to the substrate can be improved.

Further, since the saddle is not provided with a rib, it is possible to perform a water pressure test using the fixed base of the conventional water pressure tester as it is. In the case where ribs are provided in addition to the recessed portions provided in the band, even greater slip resistance can be obtained.

[0041]

【table 1】

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing how a water faucet with a saddle for a soft tube of the present embodiment is attached.

FIG. 2 is a partial cross-sectional front view showing a water faucet with a saddle for a soft tube of the present embodiment.

FIG. 3A is a bottom view of the saddle according to the embodiment, and FIG.
It is a M sectional view (B).

FIGS. 4A and 4B are plan views of the band according to the embodiment and FIG.
It is a -N line sectional view (B).

FIG. 5 is an enlarged sectional view of a main part showing a state in which the tubular body is fitted to the saddle (A) and the band (B) of the embodiment.

FIG. 6 is a front view showing a state in which the water faucet of the present embodiment is attached to a water pressure resistance tester.

FIG. 7 is a front view showing a state in which a water faucet having a conventional configuration is attached to a water pressure resistance testing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 minute water tap 2 main body 20 minutes water tap 21 tap rod 22 working port 3 saddle 30 curved part 30a pipe inner peripheral surface 30b peripheral part of attachment port 30c part along pipe axial direction 30d part along pipe circumferential direction 30d part along pipe circumferential direction 31 flange portion 31a fastening hole 32 mounting opening 33 gasket 34 dent portion 34a bottom surface 34b edge 4 band 40 curved portion 40a pipe contact inner peripheral surface 40b position facing drilled hole 40c portion along pipe axial direction 40d pipe periphery Part along the direction 41 Flange part 41a Fastening hole 42 Depressed part 42a Bottom surface 42b Edge 43 Rib 5 Soft tube 5a Perforated hole 5b Outer peripheral surface 6 Fixing base (of water resistance tester ~) 6a Fixing jig 7 Bolt X tube Circumferential direction Y Tube body axis direction s Saddle (~ in conventional examples) r Rib (~ in conventional examples)

Claims (5)

[Claims] 1. A clamping means for attaching a water faucet (1) to a flexible pipe (5) for a water distribution pipe, comprising a strip-shaped saddle (3) having an arcuate curved surface, and a pair thereof. The band (4) to be formed is characterized in that one or two or more recesses (34) having a substantially predetermined depth and area shape are arranged and formed on the inner peripheral surface (30a) of the saddle (3). Saddle with a faucet with a saddle for soft tubes. 2. A method for forming a depression (34) in a saddle (3), wherein the saddle (3) is passed through a perforated hole (5a) for mounting a water tap (1) on an inner peripheral surface (30a) of the pipe. A portion (30c) along the axial direction (Y) of the tube at the time of attachment, a portion (30d) along the circumferential direction (X) of the tube approximately orthogonal thereto, and the periphery of the perforated hole (5a). The recess (34) is formed in a portion except for the portion (30b).
The saddle of the described faucet with a saddle for soft tubing. 3. A clamping means for attaching a water faucet (1) to a flexible pipe (5) for a water pipe, comprising: a strip-shaped saddle (3) having an arcuate curved surface; In the band (4) to be formed, a concave portion (42) having a substantially predetermined depth and an area shape is formed in an inner peripheral surface (40a) of the band (4) which is in contact with a pipe. Faucet band. 4. In forming a recess (42) in a band (4), a position (40) facing a perforated hole (5a) of a saddle (3).
b) Through the pipe axis direction (Y) when attaching the band (4)
A concave portion (42) is formed in a portion excluding a portion (40c) along the circumferential direction (X) and a portion (40d) along the circumferential direction (X) of the tube substantially orthogonal thereto. Item 4. A band for a water faucet with a saddle for a soft tube according to Item 3. 5. One or two or more convex ribs (43) are arranged and formed around a concave portion (42) formed on an inner peripheral surface (40a) of a pipe (4). The band of the faucet with a saddle for a soft tube according to claim 3 or 4.