JP5536169B2 - Adhesive core for water faucet and mounting method - Google Patents

Description

  The present invention provides a water faucet to the water faucet when installing a water faucet that is arranged at the base of the water branch and branches the water supply to the water branch when the water pipe is branched from the main to the branch. The present invention relates to a closet core for a water faucet that is in close contact with the insertion hole wall from the main pipe perforation hole to the water faucet water inlet and prevents the perforation hole wall from generating rust, and a mounting method thereof.

  Conventionally, the closet core for water faucets has a flange shape at the upper end, and the lower end edge protrudes inward. This is attached to the tip of the core insertion rod, and the upper end flange is the main perforated part. By pushing until the outer edge is concerned, the insertion rod is further pressed and inserted into the lower edge protruding edge portion of the core member, and this has been expanded outwardly and engaged with the outer edge of the perforated portion.

On the other hand, as a bent structure in which the top portion of the core member is expanded outward and bent by pressing, the core member is attached to the water faucet with a close contact structure by bending the top portion of the core member, and the outer periphery of the core member is made of an elastic material. The core member is inserted into the water faucet faucet and the main pipe perforated part by an insertion rod with a coating layer fixed, and a diameter-enlarged part that is slightly larger than the inner diameter of the core member and has a tapered surface at the bottom. Patent Document 1 by the present applicant proposes that the entire core member is expanded in diameter by press-fitting the portion, and the entire outer peripheral surface of the core member is press-contacted to the water faucet water passage and the main pipe perforated wall.

  Patent Document 2 includes a sleeve body including a resin cylinder layer inside an elastic sleeve such as rubber, and a rigid material sleeve. The resin cylinder layer is formed by inserting the rigid sleeve from an opening of the sleeve body. Enlarge the diameter and seal the elastic sleeve tightly against the peripheral wall surface of the perforated hole, and expand the flange part of the resin sleeve and use the O-ring placed on the outer periphery of the flange part to connect the inner wall surface of the water faucet Is disclosed.

Furthermore, Patent Document 3 discloses that the lower end of the core member is caught in the core misalignment between the hole of the water faucet and the hole of the water faucet when the water pipe is perforated, so that the turning is prevented. As a structure to be pushed in, a metal inner core having an upper cylindrical portion and a lower cylindrical portion having a smaller diameter than the upper cylindrical portion, and a covering portion that covers an outer periphery of a metallic core bar having an outer flange at the upper end of the cylindrical portion An anticorrosion core is disclosed which is constituted by an outer core made of a covering made of an elastic material such as rubber and having an upper seal portion formed in a cylindrical shape above the covering portion.

Further, in the sleeve of Patent Document 2, the upper end portion of the main body resin sleeve is temporarily assembled by a claw portion inclined toward the inner diameter side and a locking groove provided at the distal end portion of the rigid sleeve, and is engaged by further pressing from above. In Patent Document 3, it is supported by the tapered inner wall in a state in which the tip of the lower cylindrical portion, which is slightly smaller than the inner diameter at the upper end of the tapered portion of the inner core, is slightly inserted into the cored bar tapered portion. It is disclosed that temporary assembly is performed.

JP-A-8-159356 JP 2006-46564 A JP 2008-144957 A

However, all of the above-mentioned conventional close-contact cores for water faucets are in close contact with the inner wall of the perforated hole and maintain water tightness, but the structural guarantee that guarantees fitting in relation to the bottom of the perforated hole. Not equipped. Therefore, there is a problem that the core is displaced from the perforated hole when a tensile load such as an earthquake is applied to the close contact core, or when the close contact portion cannot maintain the close contact due to aging deterioration.

  The present invention is to cope with the above-described problem, and has a bent structure that is widened and bent outward by pressing at the top of the upper cylindrical portion, and is configured to have a smaller diameter than the upper cylindrical portion via a stepped portion. An outer peripheral surface of a member formed with a retaining engagement portion that is refracted in a tapered shape toward the inside toward the distal end portion of the cylindrical portion, and one or more slits that extend from the distal end to the upper tubular portion. The core sleeve is covered with an elastic member excluding the tapered surface at the tip of the retaining stopper, and the outer diameter is slightly larger than the inner diameter of the upper cylindrical portion of the core sleeve, and the entire core sleeve is forced by insertion into the core sleeve. The closet core for the water faucet is constituted by the water faucet through hole and the straight cylindrical insertion core that is in close contact with the inner periphery of the perforated hole.

  Also, the core sleeve distal end locking part is configured so that the diameter-reduced portion of the distal end of the core sleeve is engaged with the small-diameter portion of the member insertion rod into the perforated hole at the inner diameter end of the reduced diameter. At the same time, the core mounting on the tip of the insertion rod is stabilized, and the inner diameter protrusion projects outwardly due to the diameter expansion of the core sleeve, and engages with the outer peripheral edge of the bottom of the perforated hole opening to form a complete retaining structure It was made to be.

  Further, a single or plural slits extending from the tip of the core sleeve to the upper cylindrical portion are provided so that the diameter of the core sleeve can be increased with a small pressing force, and the step is formed at the lower portion of the upper cylindrical portion. A locking force that temporarily and securely fixes the insertion core to the core sleeve is generated in the insertion core tip insertion portion.

  Since the present invention is configured as described above, it facilitates the mounting operation of the closet core for the water faucet to the water pipe perforated hole, and the tensile load such as an earthquake to the close core after the close core is attached to the perforated hole. In addition, it is possible to prevent aged deterioration of the material of the close contact portion and loosening of the adhesion due to water so as to maintain a stable close contact structure.

In addition, the diameter of the material is expanded by forming a slit in the lower part of the core sleeve, which corresponds to the misalignment between the perforated hole and the water faucet hole that occurs when the water pipe is perforated by catching the perforated hole by the tapered part at the tip of the close-contact core. In addition to reducing the pressing force for deformation, the temporary assembly of the insertion core into the core sleeve could be stabilized.

The whole sectional view showing the example of the present invention, and showing the situation where the closet core for water faucets according to the present invention is mounted from the water faucet hole to the perforated hole using the insertion rod Similarly, a longitudinal side view showing the structure of the insertion core of the close-fitting core for the water faucet Similarly, a longitudinal side view of the core sleeve Similarly, bottom view of the core sleeve shown in FIG. Similarly, a longitudinal side view of a watertight faucet coherent core showing a state in which the inner core is press-fitted into the core sleeve and the top bent structure portion of the core sleeve is pressed by the pressing flange of the insertion rod and is integrally expanded. Similarly, a longitudinal side view showing a state in which the insertion core is temporarily assembled to the core sleeve. FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 6, showing the inserted core support state of the core sleeve when the inserted core is temporarily assembled to the core sleeve. Similarly, a longitudinal side view showing a state in which the tightly assembled water faucet core attached to the insertion rod is inserted into the perforated hole Similarly, a longitudinal side view of the push-in portion showing a situation in which the insertion core is pressed and lowered into the core sleeve from the state of FIG. Similarly, further pressing from the state of FIG. 9 to widen the bending structure of the top portion of the core sleeve to the outside, and to show a state in which the mounting of the closet core for the water faucet is completed. Similarly, a longitudinal side view of a core sleeve showing a structure according to another embodiment Similarly, a longitudinal sectional side view showing a state in which the closet core for the water faucet by the insertion rod and the core sleeve according to another embodiment is attached to the insertion rod.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a water faucet main body, a saddle 12 fastened to a main pipe 2 of a water pipe in which a water faucet is installed at a lower portion, and an upper portion thereof. A water passage hole 11 is opened.

  The upper part of the water flow hole 11 is a valve chamber 13 which houses a ball valve 15 rotated by a ball valve rotation shaft 14 and opens and closes a water flow path 16 to a branch pipe. The upper portion of the valve chamber 13 is an open hole 18 and is normally closed by a cap 17.

  First, when the water faucet is attached to the main pipe 2 of the water pipe where the water faucet 1 is installed by the saddle 12 attached to the water faucet, the cap 17 is removed, and the ball valve 15 is opened, the upper part of the water faucet Since a through hole from the opening hole 18 to the main pipe 2 is opened through the valve hole 19, a hole 21 is drilled in the main pipe 2 through the opening hole 18 by a punching machine (not shown).

  When the perforated hole 21 is perforated, water flows out to the drainage channel provided in the perforator by the water pressure of the main pipe 2, and impurities such as chips from the perforation are discharged together with the outflow water, so the ball valve 15 is closed. The ball stopper 15 is fixed by joining the insertion rod 4 engaging the core member 3 to the screwing portion 45 in which the cap 17 is screwed and joining the screwing portion of the insertion device. Open the plug.

  By opening the ball valve 15, the through hole from the opening hole 18 at the upper part of the water faucet through the valve hole 19 to the main pipe 2 is opened again. The insertion rod 4 is provided at its upper end with a threaded portion that is threadedly engaged with the tip of the insertion machine 5, with an upper portion having a flange portion 43 larger in diameter than the outer diameter of the insertion core 3b, and a lower portion slightly smaller than the inner diameter of the insertion core 3b. A small-diameter portion 41 having a smaller diameter than the medium-diameter portion 42 is provided below the medium-diameter portion 42. The inner diameter of the retaining engagement portion 35 of the core sleeve 3 a is expanded by the small-diameter portion 41. Engage in a hugged state.

  The insertion machine 5 is provided with a push rod in the machine, and a lower end of the insertion machine 5 is provided with a screw hole that is screwed with a screw thread at the upper end of the insertion hole to join the insertion hole 4. The insertion spigot 4 having a threaded portion and a pushing handle (both not shown) that are screwed into the outer threaded portion 45 to fix the insertion machine to the upper portion of the water faucet, The water inlet 11 is forcibly pressed into the main pipe perforation 21.

The core member 3 constituting the closet core for a water faucet includes a bent structure 32 that is made of a metal such as stainless steel or a hard resin, and has a bending structure 32 that widens and bends outward by pressing at the top of the upper cylindrical portion 31. A retaining latching portion 35 refracted in a taper shape toward the inner side at the tip of the lower cylindrical portion 34 having a diameter smaller than that of the upper cylindrical portion 31 via 33, and the upper cylinder from the tip. A core sleeve 3a in which the outer peripheral surface of the metal core formed with one or a plurality of slits 36 leading to the portion is covered with an elastic member 37 except for the tip tapered surface of the retaining locking portion, and an outer flange 38 on the upper end. The outer diameter is slightly larger than the inner diameter of the upper cylindrical portion of the core sleeve, and the entire core sleeve is forcibly expanded by being inserted into the core sleeve 3a, and is closely attached to the inner periphery of the water faucet water passage hole and the perforated hole Straight cylindrical insertion core Constituted by a and b.

  The insertion core 3b has a tapered surface 39 at the tip so that it can be easily inserted into the core sleeve 3a, and is inserted from the upper end of the core sleeve 3a to the stepped portion 33 of the upper cylindrical portion 31. As shown in FIGS. 6 and 7, the upper cylindrical portion 31 is formed with an insertion reduced diameter portion 31 a into which the distal end of the insertion core 3 b is inserted, and is supported on the step forming top 34 a of the upper cylindrical portion 31. At the same time, the insertion core 3b is held in the temporarily assembled state in the upper cylindrical portion 31 of the core sleeve 3a by the elastic diameter reducing force by the upper cut 36a of the cut slit 36.

  The core member 3 temporarily assembled as described above is inserted until the upper surface of the outer flange 38 of the insertion core 3b is in contact with the lower surface of the flange portion 43 of the insertion rod 4, and the inner diameter of the retaining locking portion 35 is increased. It is pushed and spread by the small diameter portion 41 of the insertion rod 4 and is engaged in a state of being held by the small diameter portion 41, and is passed from the opening hole 18 at the upper part of the water faucet to the through hole 21 to the main pipe 2 through the valve hole 19. Inserted.

  Further, when the insertion rod 5 is pushed by the insertion machine 5, the tip of the insertion rod 4 is inserted through the through hole perforated portion 21 and protrudes into the main pipe 2, but the step portion 33 of the core sleeve 3 a is projected through the through hole perforated portion 21. Since the core sleeve 3a is fixed on the perforated part by being suspended on the outer periphery of the core, the inserted core 3b is further inserted into the core sleeve 3a from the temporarily fixed state, and the entire core sleeve is forcibly expanded in diameter, The outer flange 38 of the insertion core 3b presses the top of the bent structure 32 of the core sleeve 3a and widens outwardly, closely contacting the inner periphery of the water faucet perforated hole.

  Although the mounting of the core member 3 to the through hole perforated portion 21 is finished by widening the bending structure 32 to the outside and removing the insertion rod 4, the straight cylindrical insertion core 3b faces the outside in the core sleeve 3a. Therefore, the refracting protruding end of the retaining locking portion 35 that is refracted in a tapered shape toward the inside and is reduced in diameter is directly engaged with the outer peripheral edge of the perforated hole 21. A wrinkle effect that opposes the tensile load force on the close contact core is exhibited.

FIG. 11 shows another embodiment of the core sleeve 3a. When the upper cylindrical portion 31 is formed of a metal or hard resin core bar, the thickness of the upper sleeve portion 31 must be reduced. In addition to the shape fragility against forced deformation, there is also a difficulty in the processed surface, and the same material is polymerized in the step thickness forming portion to form the material thickness.

  That is, the polymer material 33 b made of the same material as the core metal is wound around the base portion of the top bent structure 32 of the upper cylindrical portion 31. Alternatively, a cylindrical object is caulked or welded and integrated.

  In FIG. 12, the refracting projecting end of the lower end retaining locking portion 35 of the core sleeve 3a is once reduced in diameter, then extended outward, and further bent in the inner diameter reduction direction. With this bent structure, the protruding end can reliably catch and lock the outer peripheral edge of the perforated hole 21 to obtain a stronger adhesion force against a tensile load.

However, in this case, since the inner diameter of the bent portion in the inner diameter-reducing direction becomes smaller, the deformed insertion rod 4a as shown in FIG.

  The close-fitting core for a water faucet according to the present invention completes the processing of a perforated hole of a water faucet with a saddle that can be branched when distributing water from a main pipe of a water pipe to a branch pipe, such as a condominium. It greatly contributes to utilization and has a high utility value in the water supply industry.

1 Water faucet body 11 Water faucet passage hole 12 Water faucet saddle 13 Water faucet valve chamber 14 Ball valve rotating shaft 15 Ball valve 16 Water passage 17 to branch pipe Cap 18 above the water faucet body Opening hole 19 at the upper part of the valve chamber 2 Valve hole of the ball valve 2 Main pipe 21 of the water pipe Drilling hole 3 Core member 3a Core sleeve 3b Inner core 31 Upper sleeve 31a of the core sleeve Inner core insertion reduced diameter part of the core sleeve 32 Bent structure 33 at the top of the upper cylindrical portion 33 Stepped portion 33b of the core sleeve 34 Step forming polymer material 34 of the core sleeve 34 Lower cylindrical portion 34a of the core sleeve 35 Step forming top 35 of the core sleeve upper cylindrical portion 36 Incision slit 36a in the lower cylindrical portion of the core sleeve An upper notch 37 in the incision slit 37 An elastic member 38 that covers the outer peripheral surface of the core sleeve An outer flange 39 at the top of the insertion core A tip of the insertion core tip Upper surface 4 Insertion rod 4a Deformed insertion rod 41 Small diameter portion 42 of insertion rod Medium diameter portion 43 of insertion rod Pushing flange 44 of insertion rod Fastening head 45 of insertion rod Cap screwing portion 5 of water faucet body Inserting machine

Claims (4)

The top part of the upper cylinder part has a bending structure that widens and bends outwards by pressing, and refracts inwardly toward the tip of the lower cylinder part that is smaller in diameter than the upper cylinder part via a step part. The outer peripheral surface of a member formed with a retaining locking portion having a reduced diameter and a single or plural slits extending from the tip to the upper cylindrical portion is elastic except for the tip tapered surface of the retaining locking portion. The core sleeve covered with the member, and the outer diameter is slightly larger than the inner diameter of the upper cylindrical portion of the core sleeve, and the entire core sleeve is forcibly expanded by insertion into the core sleeve, so A closet core for a water faucet comprising a straight cylindrical insertion core in close contact with the inner periphery 2. The closet core for a water faucet according to claim 1, wherein the diameter-reducing portion at the distal end of the core sleeve is configured to engage the reduced-diameter inner edge with the small-diameter portion of the member insertion rod into the hole. By inserting the tip of the insertion core up to the stepped portion of the core sleeve, it is locked to the inner diameter of the upper cylindrical portion of the core sleeve by the reduced diameter elasticity of one or more slits formed in the core sleeve. The closet core for a water faucet according to claim 1 or 2, wherein the mounting to the perforated hole can be performed in this temporarily assembled state. The top part of the upper cylinder part has a bending structure that widens and bends outwards by pressing, and refracts inwardly toward the tip of the lower cylinder part that is smaller in diameter than the upper cylinder part via a step part. The outer peripheral surface of a member formed with a retaining locking portion having a reduced diameter and a single or plural slits extending from the tip to the upper cylindrical portion is elastic except for the tip tapered surface of the retaining locking portion. The core sleeve is forcibly expanded by inserting an insertion core whose outer diameter is slightly larger than the inner diameter of the upper cylindrical portion of the core sleeve into the core sleeve covered with the member, so that the water faucet water passage hole and the perforation hole Method of attaching a close-contact core for a water faucet characterized by being closely attached to the inner periphery of the water faucet

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