JP5676097B2 - Water faucet with saddle - Google Patents

Description

  The present invention relates to a water faucet with a saddle used when a water supply pipe is branched from a water pipe.

  Generally, when a water supply branch is branched from a water pipe buried in the ground, a water faucet with a saddle is used. And there are a screw type and a flange type in the attachment structure of the fixing saddle of the water faucet with saddle and the water faucet body. When comparing the screw type and the flange type, the screw type has the disadvantage that the distance from the water main to the branch port becomes larger, and if an external force such as an earthquake is applied, an excessive torque is applied and the screw neck is broken. Therefore, the saddle type is now becoming mainstream.

  Specific examples of the flanged water faucet with saddle include the water faucet with saddle disclosed in Patent Document 1 and the water faucet with saddle disclosed in Patent Document 2.

  As shown in FIG. 4, the water faucet with a saddle of Patent Document 1 forms an O-ring groove 3 and a flange 4 necessary for forming the O-ring groove in the annular holder 2, and the O After the O-ring 5 is mounted in the ring groove 3, the annular holder 2 is screwed into the faucet body 1, and the collar portion 4 and the faucet body lower surface 6 are brought into contact with each other to bring the faucet body 1 into contact. And the annular holder 2 is sealed with an O-ring, and has a water faucet height H ′ as shown in FIG.

  On the other hand, as shown in FIG. 5, the water faucet with a saddle of Patent Document 2 is formed with an O-ring groove 13 and a flange 14 necessary for forming the O-ring groove in the annular holding body 12, and the O After the O-ring 15 is mounted in the ring groove 13, the water faucet has a structure in which the collar portion 14 of the annular holding body 12 is accommodated on the inner peripheral surface of the water faucet body 11 and does not have a contact surface. This is a structure in which the space between the main body 11 and the annular holding body 12 is sealed with an O-ring, and as shown in FIG.

  Between the water faucet with a saddle of Patent Document 1 and the water faucet with a saddle of Patent Document 2, when the annular holder is screwed into the inside of the water faucet body, a collar provided on the annular holder 2 There is a difference in whether the structure is such that 4 is brought into contact with the water faucet body lower surface 6 or the collar portion 14 provided on the annular holding body 12 is accommodated in the water faucet body 11. In both cases, it is common that the annular holding body is provided with an O-ring groove necessary for mounting the O-ring and a flange portion necessary for constituting the O-ring groove.

  Further, both the water faucet with a saddle of Patent Document 1 and the water faucet with a saddle of Patent Document 2 are compressed by interposing a gasket between the lower surface of the annular holding body and the outer surface of the water main, thereby stopping the water stop mechanism. A water faucet with a saddle that seals the water main.

Japanese Patent No. 3768329 Japanese Patent No. 3934304

  However, in both Patent Documents 1 and 2, if the structure is such that the O-ring is attached to the annular holder, both the width of the O-ring groove and the height corresponding to the thickness of the ridge required to form the O-ring groove must be provided. There is a problem in the design of a water faucet with a saddle that needs to be secured in an annular holder and is required to keep the height of the water faucet low in consideration of earthquake resistance.

  The present invention has been developed in view of the conventional problems, and the object of the present invention is to improve the sealing performance by reducing the number of seals against external leakage as much as possible, and to improve the water faucet body. It is to provide a water faucet with a saddle that further suppresses this and improves earthquake resistance.

In order to achieve the above object, the invention according to claim 1 is characterized in that a support surface is formed on the outer periphery of an opening formed in a saddle that is surrounded and fixed to a water main through a band, A flange portion is provided around the communication port provided in the lower portion, the flange portion is disposed on the support surface, and a cylindrical portion suspended from the communication port is fitted into the opening portion to fit the opening. The water faucet body and the saddle are fixed, and a ball is rotatably housed and held inside the water faucet body through a pair of ball sheets with an annular holding body screwed into the communication port. While pressing and sealing the gasket inserted between the continuous inlet and the water main at the lower end of the cylindrical portion, an upward stepped portion surface formed in the middle of the outer peripheral surface of the annular holder, downwardly stepped portion shaped abutment formed in the middle of the inner circumferential surface of said communication port diversion plug body A saddle with diversion plug, characterized in that bets were allowed to abut to the surface sealed.

The invention which concerns on Claim 2 is a water faucet with a saddle which made the lower end of the cylinder part protrude below from the lower surface of a cyclic | annular holding body.

The invention according to claim 3 is a water faucet with a saddle in which a tool retaining groove for screwing and tightening is provided on the lower surface of the annular holder.

According to the first aspect of the invention, the seal structure between the water main mechanism and the water main that holds the ball that is rotatably provided via the water faucet body and the pair of ball sheets by the annular holding body has Since it is performed by a gasket interposed between the bottom of the stopper main body and the surface of the water main, the number of seals against external leakage is reduced, and the utility value of the water faucet can be improved. In addition, since the structure touches the abutting surface provided inside the water faucet body with a metal touch, the O-ring groove and the flange part required for forming the O-ring groove in the annular holder are not required. Therefore, the height of the water faucet body can be further suppressed, and the earthquake resistance is improved.

According to the second aspect of the present invention, since the gasket is compressed by the lower end of the cylindrical portion of the water faucet body and the water main is sealed, the groove used for tightening on the lower surface of the annular information holding body is provided. Even if it exists, since the volume region is compressed on the outer peripheral surface of the gasket without affecting the sealing performance, the sealing performance of the part is further improved.

According to the invention which concerns on Claim 3 , since the tool hanging groove provided in the lower surface of the cyclic | annular holding body can be ensured largely, weight reduction including a water faucet body and cost reduction can be achieved.

It is a longitudinal cross-sectional view which shows one Embodiment of the water cock with a saddle in this invention. FIG. 2 is an enlarged cross-sectional view partially cut away from FIG. 1. (A) is a bottom view showing an example of the lower surface of the attachment part of the annular holder, and (b) is a bottom view showing another example of the lower surface of the attachment part of the annular holder. It is a longitudinal cross-sectional view which shows an example of the conventional water cock with a saddle. It is a longitudinal cross-sectional view which shows the other example of the conventional water cock with a saddle.

  An embodiment of a water faucet with a saddle according to the present invention will be described with reference to the drawings. 1 to 4 show an example of an embodiment of the present invention.

  In FIG. 1 and FIG. 2, a water main 21 is surrounded by a saddle 22 and a band 23 and fastened with bolts 24. In this example, a saddle 22 and a band 23 are fixed to the branch position of a cast iron pipe for water supply having a mortar lining layer on the inner surface of the water main pipe 21. The saddle 22 and the band 23 are coated with a resin powder coating. ing.

  A circular opening 25 is formed at a substantially central position of the saddle 22, and a support surface 26 having a rectangular shape as viewed from above is formed around the upper surface of the opening 25. In addition, a loading port 25a is formed which is connected to the inner peripheral surface of the opening 25 and into which the annular gasket 27 is loaded. An annular gasket 27 formed of rubber or the like has a volume on the outer peripheral side, and forms a ring-shaped locking portion 27a on the inner peripheral upper edge.

  In FIG. 1, a communication port 29 for communicating tap water is provided at the lower part of the water faucet body 28, and a short cylindrical tube portion 30 is suspended below the communication port 29. The water faucet main body 28 is fitted with the cylindrical portion 30 in the opening 25 of the saddle 22, and a flange portion 31 provided around the communication port 29 is overlapped on the support surface 26 of the saddle so that four The saddle 22 is placed and fixed via bolts (not shown). Moreover, the lower end of the cylinder part 30 press-seals the volume region of the gasket 27 inserted in the charging port 25a. Therefore, by increasing the compression rate on the outer peripheral side of the gasket 27, the gasket 27 is prevented from spreading to the outer peripheral side.

  Further, the dissimilar metals of the faucet body 28 formed of stainless steel or the like and the saddle 22 formed of cast iron material are insulated from each other through a coating film or resin to prevent electrical corrosion. An insulating plate such as a resin plate (not shown) may be interposed between the surface 26 and the flange portion 31. These coating films, resins, resin plates, and the like are equivalent systems as electrical insulating means.

  Further, the water faucet body 28 is provided with a mounting port 33 for attaching a drilling tool and an insertion tool, and a branch port 35 having a joint portion 34. Further, the water faucet body 28 has a structure independent of the saddle 22 and is independent. A water stop mechanism 36 having a function is configured.

  The water stop mechanism 36 is provided with a ball 37 having a three-way opening 37a rotatably via a stem 38. One of the balls 37 is a ball seat 39a mounted inside the water faucet body 28, and the other is a split sheet. It is supported by a ball sheet 39b attached to the inner peripheral side step portion 40a of the annular holder 40 screwed into the communication port 29 of the faucet body 28.

  Further, a stepped surface 41 is formed on the outer peripheral side of the upper portion of the annular holding body 40, and a structure is made to abut against the contact surface 42 formed at the lower part of the communication port 29 of the water faucet body 28. The contact surface 42 is surface-sealed with metals by metal touch to seal the part concerned, and the lower end of the cylindrical portion 30 is annularly held by the contact structure of the contact surface 42 and the stepped surface 41. The positioning function is also exerted so as to reliably protrude below the lower surface of the body 40.

  As shown in FIG. 2, the lower end of the cylindrical portion 30 protrudes downward from the lower surface of the annular holder 40 to have a gap t in the figure. As in the prior art, the annular holding body 40 without the O-ring or the collar part can be reduced in height, and the lower end of the cylindrical part 30 can be protruded downward from the lower surface of the annular holding body 40. It becomes possible. The annular holder 40 is engaged with the male screw 40 b of the annular holder 40 in the female screw 30 a of the cylindrical portion 30 and screwed into the communication port 29 of the water faucet body 28. Is formed with an engaging portion 40 c that engages with the locking portion 27 a of the gasket 27.

  Further, as shown in FIGS. 3A and 3B, tool retaining grooves 43 and 44 for screw tightening are provided on the lower surface of the annular holder 40. The tool hanging groove 43 shown in FIG. 3A is intended to reduce the weight and reduce the cost including the water faucet body 28 by ensuring a large recessed groove on the lower surface of the annular holder 40.

  In the figure, 32 is a water inlet, 45 is a cap, 46 is an insulating cylinder, and an annular holding is performed by applying a screw adhesive to the female screw 30a of the cylindrical portion 30 and the male screw 40b of the annular holding body 40. The sealing property between the body 40 and the water faucet body 28 can also be secured.

  Next, the operation of the above embodiment will be described. Since the saddle 22 and the water stop mechanism 36 have an independent structure and are provided so as to have an independent function, the saddle 22 does not come into contact with water and the coating film is not damaged by the fluid. On the other hand, the water stop mechanism 36 can also be adjusted by attaching the ball seats 39a and 39b to the annular holding body 40 different from the saddle 22 and screwing the annular holding body 40 to the water faucet body 28. It has an independent structure and function and is not affected by the coating film, but also has stable operating torque and water stop performance.

  Since the gasket 27 inserted between the inlet 25 a connected to the opening 25 of the saddle 22 and the water main pipe 21 is pressed and sealed at the lower end of the cylindrical portion 30, the compression rate outside the gasket 27 is increased. Thereby, it is possible to suppress the gasket 27 from spreading to the outer peripheral side, and to ensure the sealing performance between the cylindrical portion 30 and the outer periphery of the water main pipe 21. In this case, even if the tool retaining groove 43 is provided on the lower surface of the annular holder 40, the sealing performance can be improved by compressing the volume region of the gasket 27 on the outer peripheral surface of the gasket 27 without affecting the sealing performance. it can.

  Further, since the O-ring groove and the flange portion necessary for forming the O-ring groove are not required in the annular holding body 40, the height H of the water faucet body 28 in this example is the same as that of the conventional example. Since the height H ′ of the faucet body 1 (see FIG. 4) and similarly the height H ″ of the conventional faucet body 11 (see FIG. 5) can be lowered, the faucet body 28 It is possible to suppress the height of the steel, and thus contribute to earthquake resistance.

  Furthermore, since the water faucet body 28 has the flange portion 31, the metal-contact between the bearing surface 26 provided on the saddle 22 and the water faucet body 28 is interposed with a coating film or a resin plate. Since it can be easily insulated, electrical corrosion due to different metals does not occur. Further, as in the case of the conventional screw-type water faucet, there is no screw joint part, and the height L to the branch port 35 is small and there is no constriction part, so rotational torque and axial displacement are added. There is no risk of slipping, and it has impact resistance.

DESCRIPTION OF SYMBOLS 21 Water supply main pipe 22 Saddle 25 Opening part 25a Loading port 26 Bearing surface 27 Gasket 28 Water faucet body 29 Communication port 30 Cylindrical part 31 Flange part 36 Water stop mechanism 37 Ball | bowl 39b Ball | bowl sheet | seat 40 annular holding body 41 on the annular holding body side Step surface 42 Contact surface 43 Tool hanging groove 44 Tool hanging groove

Claims (3)

A support surface is formed on the outer periphery of the opening formed in the saddle that is surrounded and fixed to the water main through a band, while a flange is provided around the communication port provided at the lower part of the water faucet body. A flange portion is disposed on the bearing surface, and a cylindrical portion suspended from the communication port is fitted into the opening to fix the water faucet body and the saddle, and to the communication port. A ball is rotatably housed and held in a water faucet body via a pair of ball sheets with a threaded annular holder, and is inserted between an inlet connected to the opening and a water main. The gasket is pressed and sealed at the lower end of the tubular portion, and the upward stepped portion surface formed in the middle of the outer peripheral surface of the annular holder and the inner peripheral surface of the communication port of the water faucet body formed is brought into contact with a downward step portion shaped abutment surface, characterized in that is a surface sealed Dollar with watershed plug.   The water faucet with a saddle according to claim 1, wherein a lower end of the cylindrical portion is protruded downward from a lower surface of the annular holding body.   The water faucet with a saddle according to claim 1 or 2, wherein a tool hanging groove for screw tightening is provided on a lower surface of the annular holder.

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