JP2673931B2 - Method for preventing rust around pipe water passage and its parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rust preventive method for preventing rust from occurring on the water passage side of a water dip provided in a pipeline, and a member used directly for the method.

[0002]

2. Description of the Related Art As shown in FIG. 10, a water dip 7 for water diversion is screwed onto a part of a pipe 3. A perforation 4 is penetratingly formed on the side of the pipe 3 facing the water passage hole 8 of the water diversion plug 7. The pipe line 3 is composed of a lining portion 3b and an iron pipe 3a covering the lining portion 3b, and the surface of the perforation 4 easily rusts. When rusted, there is a problem that rust water flows out to the water passage port 8 side and water leaks from the perforations 4. Therefore, conventionally, the perforations 4 have been covered with the rust prevention bush 26 (hereinafter, referred to as the adhesion core 26).

That is, conventionally, an insertion rod 27 in which a tight contact core 26 as shown in FIG. 11 is screwed to the tip of an unillustrated insertion machine.
It was attached to the perforation 4 by. The upper cap 28 of the water faucet 7 of FIG. 10 is removed, and as shown in FIGS.
First, the contact core 26 is fitted into the insertion rod 27, and the insertion rod 27 is inserted into the perforation 4. Next, the tip end side of the adhesion core 26 is pushed and expanded to be attached to the edge portion of the lining portion 3b of the conduit 3 as shown in FIG.
As shown in FIG. 5, the tight contact core 26 is axially pressed by the flange portion of the insertion rod 27. Next, as shown in FIGS. 14 and 15, the insertion rod 27 is moved in the returning direction to punch only the contact core 26.
To the side.

[0004]

However, as shown in FIG.
The contact core 26 shown in the above has the following problems.
Although the contact rod 26 is pressed against the perforation 4 by the insertion rod 27, since a strong positive pressure does not act, the pressure contact of the contact core 26 to the perforation 4 side tends to be insufficient and uneven. Also,
Due to the structure in which elastic deformation and flexible deformation are insufficient, the hole 4 side does not sufficiently fit. Further, although the close contact core 26 has a locking portion formed at its tip, the locking structure is insufficient, and the insertion rod 27 does not press the locking portion sufficiently, so that sufficient adhesion is achieved. Absent. In particular, when the thickness of the conduit 3 changes, the engagement becomes insufficient. Further, the insertion rod 27 effectively acts on the close contact core 26 in the forward direction, but does not contribute to the pressure contact action of the close contact core 26 in the return direction. That is, the stroke in the return direction is not effectively used. Further, as shown in FIG.
It is inserted only into the water inlet 8 and is not engaged with the water passage 8. Due to the above structure, rusting cannot be completely suppressed by the conventional rust preventive method, and rust leaks to the water passage 8 side.

The present invention solves the above problems, and the contact core is deformed by the reciprocating motion of the insertion rod, and is pressed so that the water passage port and the contact core are pressed against each other to completely prevent rusting. In addition, the locking part of the close contact core is completely engaged with the drilling side as the insertion rod moves, so that the close contact core is securely engaged with the drill hole and the water inlet side, and is inserted. An object of the present invention is to provide a rust preventive method around a pipe water distributor and a member for using the same, which is efficient in working and can be used as it is in an existing insertion machine.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a water inlet (inner diameter D ₁ ) of a water faucet and a perforation (inner diameter D ₂ <D ₁ ) A rust preventive method to protect the surface of the perforation and the area around the water passage from rust by inserting an adhesive core with an insertion rod attached to the tip of the insertion machine. While the insertion core is made of an elastic flexible member and is inserted into the water passage and the hole by the movement of the insertion rod in the insertion direction, the adhesion core is pushed upward by the movement of the insertion rod in the return direction. Around the conduit water tap water inlet, which is attached to the perforation and presses against the upper side of the water passage to prevent it from coming off, and the pressure contact and engagement protect the water passage and the perforation from rust. It is characterized by the rust prevention method of. Further, it is a member used directly in the rust prevention method, and is reduced in diameter through an enlarged diameter portion and a stepped portion having a diameter slightly smaller than the inner diameter D _{1 of the} water passage opening, and the inner diameter D _{2 of the} perforation on the pipeline side. A reduced diameter portion having a slightly smaller outer diameter d ₂ is formed on the outer peripheral side, a through hole having an inner diameter D ₃ is formed on the inner side, and the insertion side end portion of the reduced diameter portion is inward in a free state. Forming a hooking portion projecting in a hook shape toward the upper end, and forming an adhesive core in which the O-ring having a diameter slightly smaller than the inner diameter D _{1 of the} water passage is ring-attached to the enlarged diameter portion in a free state. is there. Further, a rubber-like member that substantially covers the locking portion is fixed to the locking portion of the adhesion core, and the adhesion core is formed of an elastic member made of copper. A member used for inserting the adhesion core, which has a screw part to be mounted on an insertion machine formed at an uppermost portion, and has an outer diameter d ₃ substantially equal to an inner diameter D ₃ of a through hole of the adhesion core at an intermediate portion. An insertion rod main body that forms a guide portion and forms a tapered portion at the distal end portion that reduces in diameter toward the distal end side; a tapered portion that is detachably screwed to the insertion rod main body and that expands in diameter downward; The insertion rod is constructed by providing a screw member having a cylindrical portion having an outer diameter d ₄ slightly larger than the outer diameter d ₃ at the enlarged diameter end of the tapered portion.

[0007]

The contact core of the present invention mounted by the insertion rod is first installed so as to be bridged between the water passage and the perforation to protect them. The contact core is made of a flexible elastic member, and is inserted into the inner diameter of the water passage and the perforation. In particular, the engaging portion is securely engaged with the edge of the perforation and the O-ring is in close contact with the water passage. On the other hand, the contour shape of the insertion rod has a structure that effectively engages with the close contact core during its reciprocating motion, and the insertion and engagement of the close contact core is sufficiently performed by the steps of the insertion rod going and returning. As described above, reliable rust prevention is performed and the work efficiency of fitting and engaging the tight core can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an inserted state of the adhesive core of the present embodiment, FIG. 2 is an enlarged sectional view showing only around the insertion portion of the adhesive core of FIG. 1, and FIG. 3 is a detailed structure of the adhesive core of the present embodiment. FIG. 4 is an axial sectional view showing another embodiment of the adhesion core,
FIG. 5 is an axial sectional view showing a detailed structure of the insertion member of the present embodiment, and FIGS. 6 to 9 are partial axial sectional views showing a process of inserting the adhesion core of the present embodiment.

First, the contact core 1 used in this embodiment will be described with reference to FIG. An enlarged diameter portion 9 having a diameter slightly smaller than the inner diameter D _{1 of the} water passage 8 is formed on the upper side of the outer peripheral surface, and an outer diameter d slightly smaller than the inner diameter D _{2 of the} perforation 4 on the lower side via the stepped portion 16. _{The second} reduced diameter portion 10 is formed. The inner diameter D ₃ further portion of the inner diameter D ₅ slightly larger in diameter than the inner diameter D ₃ is inwardly through holes 18 formed by continuously provided is formed. In addition, an engaging portion 12 having a hook-shaped protruding portion 15 inwardly in a free state is formed on the insertion end side of the reduced diameter portion 10. A circumferential groove 11 is provided in the enlarged diameter portion 9 so that the circumferential groove 1
An O-ring 13 is attached inside the ring 1. O-ring 1
The outer diameter of 3 is formed to be slightly smaller than the inner diameter D _{1 of the} water passage opening in the free state. Further, a rubber-like member 14 encapsulating the locking portion 12 of the adhesive core 1 is fixed to the locking portion 12. Further, the adhesion core 1 is made of a copper material, and as a whole is thin, has elasticity and flexibility. On the other hand, FIG. 4 shows another adhesion core 1a, and the other parts except the rubber-like member 14 are shown in FIG.
It has the same shape as that of the contact core 1.

Next, the shape of the insertion rod 2 will be described with reference to FIG. The insertion rod 2 includes an insertion rod body 2a and a screw member 2b that is detachably screwed to the insertion rod body 2a. The insertion rod main body 2a has a threaded portion 17 at the uppermost portion, a guide portion 19 having an outer diameter d _{3 which} is substantially equal to the inner diameter D ₃ of the through hole 18 of the contact core 1 is formed in the middle portion, and the tip portion has a tip end. Tapered part 2 that reduces in diameter toward the side
0 is formed. Further, a screw hole 21 is threaded on the tip of the insertion rod body 2a. On the other hand, bis member 2b and the enlarged diameter tapered portion 23 whose diameter increases downward, outside diameter slightly larger than the outer diameter d ₃ i.e. the inner diameter D ₃ of the contact core 1 of cylindrical shape is formed the guide part 19 from the tapered end Cylindrical part 2 of diameter d ₄
2 and an insertion screw portion 24 for screwing the screw member 2b to the insertion rod body 2a side. FIG. 5 shows the insertion rod body 2
The screw member 2b is screwed to a and integrated.

In FIG. 1, a pipe line 3 is formed by stacking an iron pipe 3a and a lining portion 3b, and a hole 4 having an inner diameter D ₂ (FIG. 2) communicating with the inside of the pipe line 3 is formed in a part thereof. To be done. A portion of the conduit 3 having the perforations 4 is covered with a water faucet saddle 5 including an upper saddle 5a and a lower saddle 5b via a gap 26. The upper saddle 5a and the lower saddle 5b are connected by bolts 6 and are fixed to the pipe line 3. An inner screw hole into which the water dip 7 is screwed is formed at a position facing the hole 4 of the upper saddle 5a. The water faucet 7 has the structure shown in FIG. 10, and a water passage 8 having an inner diameter D ₁ is formed at a position facing the perforation 4. A seal member 25 is provided between the water passage 8 of the upper saddle 5a and the iron pipe 3a. As shown in FIGS. 1 and 2, the adhesion core 1 is installed between the water passage 8 and the perforation 4, and is housed in the shape as shown. That is, the expanded diameter portion 9 comes into close contact with the water passage 8 via the O-ring 13. On the other hand, the engaging portion 12 is held by tightly engaging the protruding portion 15 with the lower end edge portion of the perforation 4 by opening the protruding portion 15 toward the outside. The above structure prevents rusting.

Next, the operation of inserting the contact core 1 into the perforation 4 of the conduit 3 and the water passage 8 of the water distributor 7 by using the insertion rod 2 having the above structure will be described with reference to FIGS. The inserter to which the insert rod 2 is attached is publicly known and is omitted. First, the insertion rod 2 is separated into an insertion rod main body 2a and a screw member 2b. The contact core 1 is inserted into the guide portion 19 of the insertion rod main body 2a, and then the screw member 2b is screwed and fixed to the insertion rod main body 2a. These are inserted from above the water faucet 7 shown in FIG. 10, and as shown in FIG. 6, the locking portion 12 at the tip of the adhesive core 1 is projected from the inner edge of the lining portion 3b and the stepped portion 16 is attached to the iron pipe 3a. Insert until it touches. Next, when the insertion rod 2 is pushed further downward as shown in FIG. 7, the protruding portion 15 of the locking portion 12 is pushed outward by the guide portion 19 and the locking portion 12 is pushed.
Opens and engages with the inner edge of the lining portion 3b. Next, as shown in FIG. 8, when the insertion rod 2 is pulled up (moved upward), the locking portion 12 is pressed from the inside by the cylindrical portion 22 having the outer diameter d ₄ of the screw member 2b, and the locking portion 12 is pushed to the inner edge of the lining portion 3b. Pressed. When the insertion rod 2 is further pulled up, the cylindrical portion 22 pushes the through hole 18 having the inner diameter D ₃ from the inside (d ₄ > D ₃ ), and presses the enlarged diameter portion 9 in the direction of press contact with the water inlet 8. At the same time, the diameter of the O-ring 13 is expanded, and the O-ring 13 comes into pressure contact with the water passage port 8. The pressure contact between the cylindrical portion 22 and the contact core 1 causes the contact core 1 to move slightly upward, so that the stepped portion 16 is slightly separated from the outer periphery of the iron pipe 3a, and the locking portion 12 and the rubber-like member 1 are provided.
4 is pressed against the inner edge of the lining portion 3b. FIG. 9 shows the fitted state of the tight core 1, and the insertion rod 2 is separated from the tight core 1. The close contact core 1 is fixed by pressing the O-ring 13 to the water passage opening 8 and the locking portion 12 is press-fitted and fitted to the inner edge of the lining portion 3b. The close contact core 1a shown in FIG.
In the case of 1, the rubber-like member 14 is not provided, but since the locking portion 12 is pressed and engaged with the inner edge of the lining portion 3b, the sealing property is slightly inferior to that of FIG. 3, but there is no practical problem.

As described above, the close contact cores 1 and 1a have the water passage 8
Is pressed against the upper part of the pipe, and the engaging portion 12 is fitted to the pipe line 3 in a fitted manner. Therefore, water does not enter the water passage 8 side and rust does not occur. Moreover, the contact core 1 is securely held by the locking portion 12. Further, even if the thickness of the conduit 3 is different, the close contact core 1 is pulled upward, so that the locking portion 12 is always kept in the conduit 3.
It is press-fitted and attached.

In the above description, the contour shape of the adhesive core 1 is not limited to that of this embodiment,
Changes are possible within the same technical category. Further, the shape of the insertion rod 2 can be changed in accordance with the change of the shape of the contact core 1. Further, the material of the adhesion core 1 and the structure of the conduit 3 are not limited to those in the embodiment. Moreover, as shown in FIG.
In addition, the axial length of the reduced diameter portion 10 of the close contact core 1 is smaller than the wall thickness of the conduit 3.
Although it is also long, this is a close contact core 1 common to the thick pipe line 3
To use .

[0015]

According to the present invention, the following remarkable effects are obtained. 1) The expanded diameter part and locking part of the close contact core are expanded and bent by inserting / removing the insertion rod, and are pressed and attached to the water inlet and pipe of the water faucet, so that they are completely sealed. . Therefore, infiltration of water into the water passage is prevented and rusting does not occur. 2) Since the abutting engagement between the insertion rod and the contact core is performed both in the vertical movement of the insertion rod, there is no useless work process. Thereby, the work efficiency can be improved. 3) Since the close contact core is provided with the engaging portion and the insert rod securely presses and engages the engaging portion to the conduit side, the close contact core does not come off. 4) The structure is relatively simple and can be implemented easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an insertion shape of an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing details of an inserted state of the adhesive core of the present embodiment.

FIG. 3 is an axial cross-sectional view showing a detailed structure of a contact core used in this embodiment.

FIG. 4 is an axial sectional view showing the detailed structure of another embodiment of the contact core.

FIG. 5 is an axial sectional view showing a detailed structure of an insertion rod used in this embodiment.

FIG. 6 is a partial cross-sectional view showing an initial state of insertion of the adhesive core with the insertion rod of the present embodiment.

FIG. 7 is a partial cross-sectional view showing the insertion lower end of the insertion of this embodiment.

FIG. 8 is a partial cross-sectional view showing a locked state of a locking portion in a return process of the insertion rod.

FIG. 9 is a partial cross-sectional view showing a final state of pulling up the insertion rod and a fitted state of the adhesive core.

FIG. 10 is a cross-sectional view showing a state in which a conventional adhesive core is inserted, a pipe line, and a water faucet.

FIG. 11 is a cross-sectional view showing an initial step of inserting and attaching a conventional adhesive core.

FIG. 12 is a cross-sectional view showing a conventional process of inserting a close contact core.

FIG. 13 is an axial cross-sectional view showing a state in which the conventional adhesion core has been completely inserted.

FIG. 14 is an axial cross-sectional view showing a conventional returning process of the insertion rod.

FIG. 15 is an axial cross-sectional view showing a state in which a conventional insertion rod is pulled up.

[Explanation of symbols]

 1 Adhesion core 1a Adhesion core 2 Insert rod 2a Insert rod main body 2b Screw member 3 Pipe line 3a Iron pipe 3b Lining part 4 Perforation 5 Water faucet saddle 5a Upper saddle 5b Lower saddle 6 Bolt 7 Water faucet 8 Water inlet 9 Expanding part 10 Reduced Diameter Part 11 Circumferential Groove 12 Locking Part 13 O-ring 14 Rubber Member 15 Projection Part 16 Stepped Part 17 Screw Part 18 Through Hole 19 Guide Part 20 Tapered Part 21 Screw Hole 22 Cylindrical Part 23 Expanded Diameter Tapered Part 24 Insert thread 25 Seal member

Claims (5)

(57) [Claims] 1. A close contact core is provided between a water inlet (inner diameter D ₁ ) of a water faucet and a perforation (inner diameter D ₂ <D ₁ ) on the side of a pipe facing the water inlet by an insertion rod attached to the tip of an insertion machine. Is a rust preventive method for protecting the surface of the perforation and the periphery of the water passage by rust prevention, wherein the adhesion core insertable into the water passage and the inner diameter of the perforation and made of an elastic flexible member is inserted. The rod is inserted into the water passage and the perforation by moving in the insertion direction, and the movement of the insertion rod in the return direction pushes the adhesion core upward to engage the perforation, and presses the upper side of the water passage. A rust preventive method around the pipe water distribution passage water inlet, which prevents the water from coming off and protects the water inlet and the perforation from rusting by pressing and fastening them. 2. A water inlet (inner diameter D ₁ ) of a water faucet and water passage
Inserted between the perforations (inside diameter D ₂ <D ₁ ) on the side of the pipe that opposes the mouth.
Insert the adhesion core with the insertion rod attached to the tip of the machine.
To prevent rust and protect the surface of the perforations and the area around the water passage.
A member used directly in the rusting method, which has a diameter slightly smaller than the inner diameter D _{1 of the} water passage and is slightly smaller than the inner diameter D _{2 of the} perforation on the pipeline side by reducing the diameter through an enlarged portion and a stepped portion. A reduced diameter portion having an outer diameter d ₂ is formed on the outer peripheral side, a through hole having an inner diameter D ₃ is formed on the inner side, and the insertion side end portion of the reduced diameter portion is hooked toward the inner side in a free state. A close contact core formed with a locking portion projecting in a shape and having an O ring having a diameter slightly smaller than the inner diameter D _{1 of the} water passage ring attached to the expanded diameter portion in a free state. 3. A rubber-like member that substantially encloses the locking portion is fixed to the locking portion of the adhesion core.
Adhesion core of. 4. The close contact core according to claim 2, wherein the close contact core is formed of an elastic member made of copper. 5. The diameter is slightly smaller than the inner diameter D ₁ of the water inlet of the water faucet.
The diameter is reduced through the expanded part and the stepped part of the
Outer diameter d, which is slightly smaller than the inner diameter D ₂ of the perforated pipe side
_{2 and} a reduced diameter portion are formed on the outer peripheral side, and the inner diameter D ₃ penetrates on the inner side.
A through hole is formed and free at the insertion side tip of the reduced diameter part.
Locking part that protrudes inward toward the inside in a hooked state
And the water flow through the expanded portion in a free state.
A tight seal made by mounting an O-ring slightly smaller than the inner diameter D _{1 of the} mouth.
Use part for inserting the wearing core into the water passage and the perforation
A timber, the tip the screw portion to be attached to the insertion machine to form the top, the formed tip approximately equal guide portion having an outer diameter d ₃ to the inside diameter D ₃ of the through hole of the contact core at an intermediate portion The insertion rod body that forms a tapered portion that decreases in diameter toward the side, the taper portion that is detachably screwed to the insertion rod body, and that expands in diameter downward, and the outer diameter at the expanded end of the tapered portion. An insertion rod provided with a screw member having a cylindrical portion having an outer diameter d ₄ slightly larger than the diameter d ₃ .