JP2002286186A - Snap tap with saddle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snap tap with a saddle usable over many years and months by preventing corrosion by spark erosion and contact water. SOLUTION: An insulating plate 53 is arranged between a flange part 17 of a snap tap body 3 and a receiving part of a saddle body 42 for receiving the flange part. A bolt 57 for joining the flange part with the receiving part is insulated from the flange part by a bolt insulating part 55 and an insulating washer 59. A step part 14 is formed inside a casing around an inflow item 3 of the casing 7 of the snap tap body, and a lower side ball seat 15 is arranged here. A close contact core 65 is installed for sealing a bored hole 82 bored in a service water main pipe 81 from water. A cylindrical insulator 61 is arranged for covering an inflow port of the flange part and an inner wall of a water feed hole 45 of the saddle body. A rigid bush 63 is arranged in the insulator. An upper part of a through hole of a ball presser is formed in an octagonal shape. The ball presser is rotated by using this upper part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tap with a saddle used for water supply and, more particularly, to a water tap with a saddle which reliably prevents corrosion and can be used for many months. More specifically, the present invention relates to a water tap with a saddle that can completely electrically insulate the saddle and a water tap main body attached to the saddle and can reliably prevent electrolytic corrosion. Further, the present invention relates to a saddle faucet that can reliably prevent corrosion caused by the saddle coming into direct contact with water.

[0002]

2. Description of the Related Art Generally, a water tap with a saddle is used when a water supply pipe is branched from a water main pipe. This faucet with a saddle is roughly divided into a screw type that directly screw-connects the faucet body and the saddle, and a flange is formed at the lower part of the faucet body, and this flange is mounted on a receiving surface formed on the saddle. There is a flange type which is mounted and connected by an appropriate means such as a bolt. Regardless of the type, in most cases, the main body of the faucet is made of gunmetal and the saddle is made of ductile cast iron. When such dissimilar metals are used, electrolytic corrosion becomes a problem. Since the water faucet with the saddle together with the pipe is buried under the ground for many months, it is desired to effectively prevent electrolytic corrosion.

[0003] In the case of the flange type, a part of the upper portion of the saddle, together with the main body of the water faucet, forms a storage chamber for a ball valve element constituting a water blocking mechanism. Corrodes. In response to this, powder coating has been applied, but the thickness of the coating film has been uneven, resulting in lack of reliability and the fact that corrosion due to water contact with the saddle has not been completely prevented. It is.

[0004] Japanese Patent Application Laid-Open No. 10-306895 discloses a flange type in which an annular holder is screwed to a lower part of a water faucet body and a lower ball seat is attached to the holder.
The saddle provides a structure that does not come into contact with water. However, with this structure, the flange becomes larger than before,
There is a problem that the whole apparatus becomes large.

[0005] Apart from the above-mentioned corrosion problem, in the case of the screw type, when the water faucet body is screwed to the saddle at the upper part of the screw, a neck part for grasping the water faucet and rotating the water faucet body is provided. Is formed, and the strength of the neck becomes a problem. In addition, the height of the water faucet as a whole is increased, but in recent years, the water faucet is often buried in a shallower position in the soil than in the past, and in order to cope with this, the water faucet must be made as short as possible.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and electrically insulates a saddle and a water tap body without increasing the size of the apparatus.
An object of the present invention is to provide a water faucet with a saddle that can reliably prevent electrolytic corrosion. It is also an object of the present invention to provide a water tap with a saddle that prevents the saddle from corroding by preventing the saddle from directly contacting water.

[0007]

In order to solve the above problems, according to the present invention, a flange portion formed on a water faucet main body is placed on a receiving portion formed on a saddle, and the flange portion and the receiving portion are placed on the receiving portion. By fastening using fastening members,
The water faucet body is fixed to the saddle, and at this time, an insulating plate made of an electrically insulating material is arranged between the flange portion and the receiving portion, and the fastening member is at least one of the saddle and the water faucet body. One of them was electrically insulated from the water faucet main body and the saddle by being engaged via an insulating member made of an electrically insulating material.

In the present invention, the water faucet main body is fixed to the saddle by mounting the flange formed on the water faucet main body on the receiving portion formed on the saddle, and the casing itself is provided with:
A ball seat attachment portion was formed around an inflow port serving as an inlet of water into the casing, and a lower ball seat for rotatably receiving the ball valve element was disposed here. As a result, the main body of the water faucet is separated from the saddle, and the saddle does not partially face the ball storage chamber and does not touch the water.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but the scope of the present invention is not limited to the embodiments described below.

FIG. 1 is a longitudinal sectional view of a water tap with saddle 1 according to a specific embodiment of the present invention, FIG. 2 is a half plan view showing only the upper half, and FIG. 3 is a side view. .

The water tap with saddle 1 comprises a water tap main body 3,
And a saddle 41 to which the water faucet body 3 is attached.

The main body 3 of the water tap includes a ball case or casing 7 in which a known ball valve body 5 having an internal flow path 6 is housed. In the casing 7, a cylindrical outlet 9 is provided on the left side in FIG. 1, and a spindle hole 11 into which a spindle 12 for operating the ball valve element 5 is inserted is formed on the right side. The spindle 12 is integrally rotatably connected to the ball valve body as shown.

An inlet 13 is formed at a lower portion of the casing 7, and a step portion 14 having a larger diameter is formed inside the casing 7 along the periphery of the inlet 13. A well-known first or lower ball seat 15 for rotatably receiving the ball valve element 7 is disposed on the step portion 14. The outside of the inlet 13 is a flange portion 17 having a substantially square planar shape. Flange part 17
Is formed flat.

In the upper part of the casing 7, there is formed a ball retainer mounting hole 21 in which a female screw is engraved, and a ball retainer 23 having a male screw is screwed thereto. A through hole 25 is formed in the ball holder 23, and the through hole 2
5 is provided with a step 27 having an increased diameter in the axial direction, and a known second or upper ball seat 29 is arranged there.

The through hole 25 has an irregular shape, at least over a predetermined length from the outer end portion (the upper end portion in FIG. 1), and in this embodiment, has an octagonal shape. The holder 23 is rotated, and the casing 7 is rotated.
Can be combined or removed. Therefore,
There is no need to provide a gripping neck for rotating the ball retainer, and the overall length of the water faucet can be reduced. Further, thereby, higher strength can be obtained as compared with the case where the neck portion is provided. Reference numeral 31 denotes a cap that is screwed into the ball retainer 23 to close the through hole 25.

The saddle 41 is a saddle body 42 disposed above a water main 81 indicated by a two-dot chain line in FIG.
And a saddle body 42 which is arranged on the lower side and
And a saddle band 51 coupled to the saddle band 51.

The saddle main body 42 is provided with the above-mentioned water faucet main body 3.
Receiving portion 43 at the flange portion 17
It has. The flat shape of the receiving portion 43 is the flange portion 17.
, But slightly wider than the flange portion 17 and the upper surface is flat. In addition, in the receiving portion 43,
A water passage hole 45 is formed at a position corresponding to the inflow port 13 formed in the flange portion 17 of the water faucet main body.
In the present embodiment, the diameter of the inflow port 13 and the diameter of the water passage hole 45 are substantially the same. The saddle body 4 is provided around the water passage hole 45.
A step portion 47 having a large diameter is formed on the inner peripheral side of 2, and a known packing 48 is disposed therein.

Reference numeral 53 denotes a flange 1 of the water faucet main body 3.
7 and a receiving portion 43 of the saddle body 42,
An electrically insulating material, in this embodiment, an insulating plate made of resin. The insulating plate 53 has a shape that covers substantially the entire lower surface of the flange portion 17, and completely insulates the water faucet main body 3 and the saddle main body 42 at this portion.

FIG. 4 is an enlarged view of a section taken along line AA in FIG. As shown, the bolt 57 is connected to the flange portion 17.
The water faucet main body 3 is fixed to the saddle main body 42 by being screwed into the screw hole of the receiving portion, and the cylindrical portion formed integrally with the insulating plate 53 is provided in the hole of the flange portion 17. A bolt insulating part 55 is arranged. Below the spring washer 58 that receives the bolt 57, an insulating washer 59 also made of an insulating material is arranged. Therefore, also in this part, the faucet main body 3
And the saddle body 42 are electrically insulated.

In FIG. 1, reference numeral 61 denotes the insulating plate 5 as well.
An inflow port 13 of the water faucet main body 3 formed integrally with 3;
It is a cylindrical insulator that closely covers the inner peripheral surface of the water passage hole 45 of the saddle body 42. Inside thereof, a rigid, for example, stainless steel tubular member or bush 63 is provided.
However, it is attached in such a state that a short flange extending radially outward at the upper end thereof is received on the upper end surface of the tubular insulating member 61. The flange is narrow and does not contact the faucet body 3.

The cylindrical member indicated by a two-dot chain line in FIG. 1 is a well-known close contact core 65 which is attached for preventing corrosion of a perforated hole 82 formed in a water main. The contact core 65 expands its diameter at the upper portion in a state of expanding backward and presses against the inner periphery of the bush 63, and expands the lower portion outward and presses against the inner wall of the water main pipe. This prevents water from coming into contact with the perforated hole 82 formed in the main pipe. Since this technique is publicly known, a detailed description is omitted.

In the present embodiment, the above-described tubular insulator 61 and the bush 63 are provided for the following reason. That is, when these are not provided, the close contact core 65 is attached in the same manner as in the related art, and when the upper end is pressed against the inner wall of the inflow port of the water faucet body and the lower end is pressed against the inner wall of the water main pipe, the core and the main pipe are separated. The water faucet body and the saddle are electrically connected to each other. There is also a coherent core type in which the outer periphery of a main body made of copper or the like is coated with an elastic material such as rubber. There are cases.

Therefore, first, a cylindrical insulator 61 is disposed, and a rigid bush 65 capable of pressing the contact core with a sufficient force is disposed inside the cylindrical insulator 61. This ensures reliable sealing by the contact core and water separation. This enables insulation between the plug body 3 and the saddle 41.

In the above description, the flange portion of the faucet main body 3 has been described as being flat, but the present invention is not limited to this. For example, what is shown in FIG. 5 is a case where the flange portion of the water faucet body and the receiving portion of the saddle body are formed in a stepped state. In the figure, the members corresponding to the members in the first embodiment are indicated by the same numbers with dashes. A detailed description of this will be omitted.

[0025]

As is apparent from the above description, according to the present invention, the electrical insulation between the water faucet main body and the saddle is completely achieved, and the conventional electrolytic corrosion can be prevented. In addition, although it is a so-called flange type, unlike the conventional type, a lower ball seat is disposed on the casing of the water faucet itself, and the water faucet and the saddle are separated from each other. Unlike the type, the saddle does not come into contact with water in the casing in which the ball valve element is housed, so that the conventional corrosion of the saddle caused by water contact is prevented. At this time, the ball retainer is arranged on the upper side, and the receiving portion of the lower ball seat is formed on the casing itself, so that it is not necessary to enlarge the flange portion.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a water tap with a saddle according to a first embodiment of the present invention.

FIG. 2 is a plan view of an upper half.

FIG. 3 is a side view.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 5 is a longitudinal sectional view of a water tap with a saddle according to a second embodiment.

[Explanation of symbols]

 Reference Signs List 1 water faucet with saddle 3 water faucet main body 7 casing 13 inflow port 14 stepped portion 15 lower ball seat 17 flange portion 23 ball retainer 27 stepped portion 29 upper ball seat 41 saddle 42 saddle body 43 receiving portion 45 water passage hole 53 Insulating plate 55 Bolt insulating part 57 Bolt 59 Insulating washer 61 Cylindrical insulator 63 Bush 65 Adhesive core 71 Water main pipe 73 Perforated hole

Claims (7)

[Claims] 1. A saddle fixed to a water main and having a water passage hole communicating with a branch hole formed in the main pipe, and an inflow port fixed to the saddle and communicating with the water passage hole. A casing and a water faucet main body having a flange portion extending around the inflow port are provided, the flange portion is placed on a receiving portion formed on the saddle, and a fastening member is used in the flange portion and the receiving portion. By fastening the water faucet main body to the saddle, a water faucet with a saddle, an insulating plate made of an electrically insulating material is disposed between the flange portion and the receiving portion, A water tap with a saddle, wherein the fastening member is engaged with at least one of the saddle and one of the water tap main bodies via an insulating member made of an electrically insulating material. 2. The water faucet with a saddle according to claim 1, further comprising a tubular insulator made of an electrically insulating material, which fits into the water hole of the saddle and the inflow port of the water faucet main body. A water tap with a saddle, comprising: 3. The water tap with a saddle according to claim 2, wherein the tubular insulator is formed integrally with the insulating plate. 4. The water tap with a saddle according to claim 2, further comprising a rigid tubular member having rigidity that fits into a hole of the tubular insulator. Water faucet. 5. A saddle that is fixed to a water main and has a water passage hole that communicates with a branch hole formed in the main pipe, and an inflow port that is fixed to the saddle and communicates with the water passage hole. A casing and a water faucet main body having a flange portion extending around the inflow port are provided. The flange portion is placed on a receiving portion formed on the saddle, and the water faucet main body is fixed to the saddle. In the water faucet with a saddle, a ball valve body having an internal flow path is received inside the casing, and a ball seat attaching portion is formed around the inflow port of the casing. A water faucet with a saddle, wherein a first ball seat rotatably receiving the ball valve element is disposed in the portion. 6. The water tap with a saddle according to claim 5, wherein a ball insertion hole through which the ball valve body can pass is formed in the casing so as to face the inflow port. Has a through hole, and a ball retainer having a second ball sheet opposed to the first ball sheet is coupled to a predetermined position in the axial direction of the through hole. , Water tap with saddle. 7. The water tap with a saddle according to claim 6, wherein the ball retainer is screw-coupled to the ball insertion hole, and the through hole extends over a certain length in a predetermined position in the axial direction. A faucet with a saddle, characterized in that its inner peripheral shape is formed in an irregular shape capable of transmitting rotational force.