JPS636535Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a single-lever mixer faucet.

The object of the present invention is to provide a single-lever mixer faucet that produces less noise and provides rectified hot water with a uniform temperature.

The present invention will be explained below based on drawings showing embodiments thereof.

As shown in FIG. 1, the single-lever mixing faucet according to the present invention (hereinafter simply referred to as the inventive faucet) has a valve body 2, an operating rod 3, a rotating body 4 on the top of a faucet body 1.
It has a cylindrical control chamber 5 that houses water flow control members such as the like, and a hot water passage hole 6, a cold water passage hole 17, etc. are bored in the bottom wall 7 of the cylindrical control chamber 5, and the bottom wall 7
A valve seat 9 is mounted on the top, in which a hot water valve hole 8, a cold water valve hole 18, etc., communicating with the hot water hole 6, cold water hole 17, etc. are bored. A sealing member 11 such as an O-ring or flat packing is interposed between the upper peripheral edge 7a of the hot water passage hole 6 of the control chamber bottom wall 7 and the lower peripheral edge 9a of the hot water valve hole 8 of the valve seat 9. (hereinafter referred to as hot water seal member 11). The hot water sealing member 11 includes the upper surface of the upper peripheral edge 7a and the lower peripheral edge 9.
a and the lower surface of the joint 10 to prevent water from passing through. That is, in the illustrated embodiment, as shown in FIGS. 1 and 2, the hot water valve hole 8 of the valve seat 9 is
A step portion 9b is formed on the lower peripheral edge portion 9a of the step portion 9b.
An O-ring is interposed between the lower peripheral edge 9a of the hot water valve hole and the upper peripheral edge 7a of the hot water valve hole such that an O-ring is fitted into the hot water valve hole. In addition, when using a flat packing as shown in FIG. 5 as the hot water sealing member 11, the lower surface of the lower peripheral edge 9a of the hot water valve hole 8 of the valve seat 9 and the hot water valve hole 6 of the control chamber bottom wall 7 are used.
Of course, it is interposed between the upper surface of the upper peripheral edge portion 7a. Opening 12 of the hot water seal member 11
As shown in FIGS. 3 to 5, a net 13 made of a suitable material such as metal or plastic is placed on the entire surface of the
is installed. In order to stretch the net 13 over the hot water sealing member 11, a method such as inserting the net material in advance into a mold such as an O-ring and molding it integrally may be used. By a similar method,
The net 13 is also stretched over the opening 21 of the cold water seal member 19 and the opening 22 of the hot water seal member 20.

In FIG. 1, 14 is a hot water chamber through which hot water flows, and 15 is a mixing chamber drilled in the lower part of the valve body 2 for mixing cold water and hot water.
A cold water chamber is located below the bottom wall 7 of the control room and receives cold water from a cold water supply pipe (not shown).
Reference numeral 9 denotes a seal member such as an O-ring interposed between the lower peripheral portion of the cold water valve hole 18 of the valve seat 9 and the upper peripheral portion of the cold water passage hole 17 of the control chamber bottom wall 7 (hereinafter referred to as cold water seal member 19). Although not shown, the faucet of this invention is provided with a hot water chamber, a hot water passage hole, a hot water valve hole, a hot water seal member 20 (see FIG. 2), etc., in the same manner as in the case of cold water. Reference numeral 21 denotes a hot water discharge pipe.

The proposed faucet is as described above, but the important point in its construction is that the ring-shaped sealing member covered with a net is
They are arranged in two stages on the upstream and downstream sides of the mixing chamber 15, which is located in the middle of the water flow path and where noise is most likely to occur. The point is that it is located in a position where it is not affected by such things. The water faucet of the present invention having such a structure operates as described below.

Cold water sent from a cold water supply pipe (not shown) into a wide cold water chamber 16 passes through a narrow cold water passage hole 17 in the bottom wall 7 of the control chamber and a cold water valve hole 18 in the valve seat 9, as shown by arrow A in Fig. 1, and flows into the mixing chamber 15 of the valve body 2 while the water force is being moderated by a mesh seal material 19 for cold water. On the other hand, although not shown, the water force of hot water is similarly moderated and flows into the mixing chamber 1
5. Then, the cold water and hot water mix in the mixing chamber 15, change direction downward, and flow vigorously into the hot water valve hole 8 of the valve seat 9 as shown by arrow B, tending to flow turbulently. However, since a mesh seal member 11 is interposed between the lower peripheral portion 9a of the hot water valve hole 8 and the upper peripheral portion 7a of the hot water valve hole 6 of the bottom wall 7 of the control chamber, the hot water, which tends to flow turbulently, is prevented from flowing through the mesh 13 of the seal member 11.
The flow is straightened and the flow rate is reduced to an appropriate speed. The straightened flow with the reduced flow rate passes through the hot water passage 9 in the bottom wall 7 of the control room and flows into the wide hot water room 1.
The water flows quietly into the outlet pipe 2 while remaining rectified.
From 1, it flows out into the outside air as a medium speed rectified flow.
A mesh seal member 20 for hot water is also interposed between the hot water passage hole and the hot water valve hole, so that the hot water flows into the mixing chamber 15 with its speed reduced and its flow rectified.

As mentioned above, the proposed faucet is equipped with mesh sealing members on the upstream sides of the mixing chamber and hot water chamber, which may cause noise in the water flow path, to reduce and rectify the water flow in two stages. No loud noise will be generated. In particular, the mesh sealing members installed on the upstream and downstream sides of the mixing chamber (upstream side of the hot water chamber), where cold water and hot water collide and are most likely to generate noise, prevent the cold water and hot water in the mixing chamber from colliding with each other. It absorbs the impact vibrations correspondingly and largely eliminates the cause of noise generation.
Moreover, since this mesh sealing member is not affected by friction or the like caused by the operation of the valve body, there is no risk of wear and tear, and it is possible to maintain its noise-dampening function over a long period of time.

Further, by using the net stretched over the hot water sealing member, it is possible to obtain hot water that is extremely easy to use by reducing the flow velocity and rectifying the flow. Furthermore, the nets stretched over the respective openings of the cold water seal member and the hot water seal member allow better mixing and agitation of hot water and cold water, so that uniform hot water can be obtained. Furthermore, since the faucet of the present invention integrates the sealing member and the net, it has the effect of further reducing costs compared to the case where the two are separate bodies.

[Brief explanation of the drawing]

The drawings are all for explaining the embodiment of the proposed faucet, and FIG. 1 is a longitudinal sectional view of the proposed faucet, FIG. 2 is a bottom view of the valve seat into which the O-ring is fitted, and FIG. 3 is a plan view of an O-ring with a mesh stretched thereon, FIG. 4 is a sectional side view taken along the line of FIG. 3, and FIG. 5 is a side sectional view of a flat packing with a mesh stretched thereon. 1...faucet body, 2...valve body, 3...operating rod,
5...Control room, 6...Hot water valve hole, 7...Control room bottom wall, 7a...Hot water valve hole upper periphery, 8...Hot water valve hole 9...Valve seat, 9a...Hot water valve hole bottom Periphery, 11...
Seal member, 12... opening, 13... net.

Claims (1)

[Scope of utility model registration request] It has a cylindrical control chamber in which a valve body provided with a mixing chamber is housed to be operated by an operating rod, and a cold water chamber located below the bottom wall of the control chamber and upstream of the mixing chamber; In a single-lever mixing faucet comprising a hot water chamber and a hot water chamber downstream of the mixing chamber, a valve is provided on the bottom wall of the control chamber and is interposed between the valve body and the control chamber. A seat is attached, and the valve seat is provided with a cold water valve hole, a hot water valve hole, and a hot water valve hole that communicate from the cold water chamber, hot water chamber, and hot water chamber to the mixing chamber of the valve body, respectively, and the cold water valve A single-lever type mixing faucet characterized in that a ring-shaped mesh sealing member that is in close contact with the upper surface of the bottom wall of the control chamber is interposed on the lower periphery of the hole, the hot water valve hole, and the hot water valve hole. .