JPS6330858Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot water mixer faucet used in a bathroom.

Hitherto, various types of mixing faucets for hot water and cold water have been known, such as those shown in FIGS. 4 and 5 of Japanese Utility Model Application No. 52-86832.

To explain the one shown in Figs. 4 and 5, water valves a are provided on both left and right sides of the main body A, which is formed horizontally.
A shower valve seat 27, a bath valve seat 29, a shower valve body 30 corresponding to the primary side of both valve seats 27 and 29, and a bath side valve are connected to the mixing flow path 5 in the center of the main body. Each of the on-off valves c has a valve body 31 and allows the mixed water to flow out from either the shower side outlet 23 or the bus side outlet 26 or to shut off both of them by operating one on-off handle 41. The water valve a and the hot water valve are connected to the spindle 12.
is designed to move forward and backward into the flow path. And this one does not have a check valve. Therefore, it is not sanitary.

Therefore, in order to solve the above sanitary problems, it is natural to consider providing a check valve upstream of the water valve and the hot water valve.

However, if a reverse valve is installed upstream of a water valve or a hot water valve, the flow path between the check valve and the open/close valve becomes sealed, and the spindle may fall into the flow path when the water valve or hot water valve is closed. When the water enters, the volume of the sealed flow path is compressed by the amount of the entry, and the internal pressure increases, making the handles of the water valve and hot water valve stiff and impairing operability.

The purpose of this invention is to install water valves and hot water valves on both the left and right sides of the main body, which is formed horizontally, and to install a shower side valve seat, a bath side valve seat, and the primary side of these valve seats in the mixing flow path in the center of the main body. It has a shower side valve body and a bath side valve body that correspond to each other, and can be opened and closed to allow mixed water to flow out from either the shower side outlet or the bath side outlet, or to shut off both by operating a single opening/closing handle. In a hot water mixing faucet equipped with a check valve on the upstream side of the water valve and the hot water valve, when the water valve and the hot water valve are closed, a sealed flow is established between the check valve and the on-off valve. The purpose is to prevent the internal pressure from increasing due to the volume of the passage being compressed, and to avoid impairing the operability of the handle when adjusting the water valve and hot water valve.

The structure of the present invention to achieve such an object is that, in the hot water mixer faucet, the water valve and the hot water valve are respectively provided in a valve seat provided in the main body and in an opening provided opposite to the valve seat. The lid is formed into a cylindrical bottom and is attached with its bottom wall facing the outside of the main body, and the lid is rotatably attached to the bottom wall of the lid and cannot be moved forward or backward, and has an operating handle on the outer end located outside the lid. a cylindrical portion located between an inner circumferential surface of a lid and an outer circumferential surface of an inner end of the spindle located inside the lid; the valve seat is moved forward and backward by rotation of the spindle to open and close the valve seat; a valve body, and either one of the inner circumferential surface of the cylindrical portion of the valve body and the outer circumferential surface of the inner end of the spindle, and the outer circumferential surface of the cylindrical portion of the valve body and the inner circumferential surface of the lid are screwed together. ,
The other is non-rotatable and has a structure in which it is engaged so that it can move forward and backward.

Thus, the spindle of the water valve and hot water valve rotates when the operating handle is rotated, but does not move forward or backward, and only the valve body moves forward or backward to open or close the valve seat. However, since the valve body is submerged in water from the beginning in the sealed flow path between the check valve and the on-off valve, the volume of the sealed flow path changes due to the movement of the valve body back and forth and the rotation of the spindle. Never.

That is, the pressure in the sealed flow path does not increase due to the advancement of the valve body, and the operability of the handle when adjusting the water valve and hot water valve is not impaired.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, A is the main body, which is formed into a horizontally long cylindrical shape with openings 1 at both left and right ends when viewed from the front, and near the left and right ends are a water flow path 3 and a hot water flow path that have inlet ports 2 on the back, respectively. 4, and both flow paths 3, 4
are connected to main body A via water valve A and hot water valve (not shown), respectively.
It communicates with the mixing channel 5 in the center. Note that the hot water valve has the same structure as the water valve a.

The water valve a and the hot water valve have a valve seat 7 provided in a partition wall 6 that separates the water flow path 3 and the hot water flow path 4 from the mixing flow path 5, respectively, so as to face the openings 1 at both left and right ends of the main body A.
The valve body 8 has a cylindrical shape that slides on the inner circumferential surface of a lid 9 whose outer circumferential surface is screwed into the opening 1 on the back and guides the forward and backward movement of the valve disk 8. 10.

The cylindrical portion 10 has a screw 11 on its inner peripheral surface, and the screw 11 connects to a screw 1 provided on the outer periphery of the tip of the spindle 12.
Screw together with 3.

The spindle 12 is rotatably inserted through the lid 9 and is hooked to the lid 9 by a retaining ring 14 so as not to move forward or backward, and an operating handle 15 is attached to the end projecting outward from the lid 9.

Further, the spindle 12 is formed with a slightly larger diameter in the middle, and this part is in close contact with the inner circumferential surface of the lid via the O-ring 16, and the cylindrical portion 10 of the valve body 8 is formed on the outer circumferential surface in front of the O-ring 16. A screw 13 is provided which screws into the screw 11 on the inner peripheral surface. In addition, engaging parts 10' and 9' such as polygonal surfaces and splines are provided on the outer and inner circumferential surfaces of the valve body, respectively, so that the outer circumferential surface of the cylindrical part 10 and the inner circumferential surface of the lid 9 engage with each other. 8 does not rotate, but moves in the axial direction. Incidentally, the cylindrical portion 10 and the lid 9 may be screwed together, and the cylindrical portion 10 and the spindle 12 may be engaged by splines or the like.

Then, by rotating the operating handle 15,
The spindle 12 rotates without moving back and forth, and as the spindle 12 rotates, the valve body 8 moves back and forth, approaches and separates from the valve seat 7, and opens and closes it.

On the other hand, the inlet 2 opened on the back side of the main body A is provided with a check valve b, and the mixing flow path 5 is provided with an on-off valve c.

The check valve b has a valve seat member 17 screwed onto the inlet 2.
The check valve seat 18 is formed at the inner end of the check valve seat 18, and the check valve body 19 corresponds to the check valve seat 18 from the secondary side. It has a guide 20 that guides the operation of the check valve body 19,
A spring 21 is elastically loaded between the tip of the guide 20 and the back surface of the check valve seat 18 to always bias it in the valve closing direction.

The check valve b is not limited to this structure, but may be of any type as long as it has a check function.

Further, a socket 22 is connected to the inlet 2 to connect it to a water supply source or a hot water supply source.

The mixing flow path 5 is connected to the water valve a and the hot water valve, and is a primary chamber 5 having a shower side outlet 23 at the center of the back side.
a, and the primary chamber 5a is partitioned in front of the primary chamber 5a through a partition wall 24, and is connected to the primary chamber 5 through a through hole 25 formed in the partition wall 24 opposite to the shower side outlet 23.
In addition to connecting to a, there is a bus side outlet 26 in the center of the bottom surface.
The on-off valve c opens and closes the shower side outflow port ₂₃ and the through hole 25 to allow the mixed water to flow out from the bus side outflow port 26 and to shut off the water. Consists of side valve c ₂ .

The valve seat 27 of the shower side valve _c1 is formed on the primary chamber 5a side surrounding the shower side outflow port 23, and
The valve seat 29 of c ₂ has a through hole 2 on the primary chamber 5a side of the partition wall 24.
5.

Therefore, the shower side valve seat 27 and the bus side valve seat 29 coaxially face each other, and the shower side valve body 30 and the bus side valve body 31 correspond to each other from the primary chamber 5a side,
A spring 32 is mounted between the two to press the valve seats 27 and 29, respectively.

Shower side and bath side, valve bodies 30 and 31, respectively
has a protrusion 33 in the center of the seating surface side that fits loosely into the valve seats 27 and 29 on the shower side and the bus side and protrudes to the secondary side when the valve is closed, and the bus side valve body 31 The shower-side valve body 30 has a hole 34 passing through its center, and the shower-side valve body 30 has a recessed hole 36, which has a slightly larger diameter than the hole 34 but has a hooking portion 35 with a slightly narrower diameter at its entrance. It is provided coaxially with 34.

A spindle 38 having an enlarged head 37 at its tip is slidably inserted into the hole 34 of the bus side valve body 31, and an enlarged head 37 at the tip of the spindle 38 is inserted into the concave hole 36 of the shower side valve body 30. It is slidably inserted and latched.

The spindle 38 has a stepped portion 3 at the rear from the middle portion.
9, which has a larger diameter than the front part, and the large diameter part screws into an opening 40 formed in the main body A on the side of the secondary chamber 5b and extends outward from the front of the main body A. An opening/closing handle 41 is provided at the protruding end.

The stepped portion 39 of the spindle 38 normally faces the protruding portion 33 of the bus-side valve body 31 with a slight gap.

The bus side valve c ₂ and the shower side valve c ₁ of this on-off valve c are normally closed as shown in FIG. advances and steps 39
to open the bus side valve _c2 by pushing the bus side valve body 31.

Therefore, the mixed water in the primary chamber 5a flows to the secondary chamber 5b and flows out from the bath side outlet 26 provided in the chamber 5b.

At this time, the spring 32 is compressed by the forward movement of the bus side valve body 31, and the shower side valve body 3
0 is pressed against the shower-side valve seat 27, the shower-side valve _c1 is reliably closed, and the shower-side outflow port 23 is completely shut off from water.

If the opening/closing handle 41 is rotated counterclockwise from this state, that is, from the state shown in the drawing, the spindle 38 will move backward, and the enlarged head 3 of the spindle 38 will move back.
6 is engaged with the latch portion 35 of the shower-side valve body 30 to move the valve body 30 in the valve-opening direction, and the shower-side valve is opened.
c ₁ opens.

Therefore, the mixed water in the primary chamber 5a flows out from the shower side outlet 23.

At this time, due to the movement of the shower side valve body 30,
When the spring 32 is compressed and the bus-side valve body 31 is pressed against the bus-side valve seat 29, the bus-side valve _c2 is reliably closed, and the bus-side outlet 26 is completely shut off from water.

A shower hose 42 is connected to the shower side outlet 23 via a rotatably mounted shower hose connector 28, and a bath water spout 43 is connected to the bath side outlet 26.

Since the present invention has the above configuration, it has the following advantages.

(1) Since the spindle does not advance or retreat, the pressure in the flow path between the check valve and the on-off valve does not increase even if the valve bodies of the water valve and hot water valve move within the flow path between the check valve and the on-off valve. figure,
The handles for the water valve, hot water valve, and open/close valve are not heavy and can be operated easily.

(2) A check valve can be installed upstream of the water valve and hot water valve without impairing the smoothness of operation, thereby preventing the backflow of waste water.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a hot water mixing faucet showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional side view, Fig. 3 is a longitudinal sectional view of the check valve portion of the invention, Fig. 4; FIG. 5 shows an example of a conventional hot water mixer faucet, FIG. 4 is a longitudinal sectional side view of the on-off valve portion, and FIG. 5 is a longitudinal sectional front view of the water valve (hot water valve) portion. A...Body, a...Water valve (hot water valve), b...Check valve, c...Open/close valve, 1...Opening, 5...Mixing flow path, 7...Valve seat, 8... Valve body, 9... Lid, 10...
...Cylindrical part, 12...Spindle, 15...Operation handle, 23...Shower side outlet, 26...Bath side outlet, 27...Shower side valve seat, 29...
Bus side valve seat, 30...Shower side valve body, 31...
Bus side valve body, 41...opening/closing handle.

Claims (1)

[Scope of utility model registration request] A water valve and a hot water valve are installed on both the left and right sides of the main body formed horizontally, and a shower side valve seat, a bath side valve seat, and the corresponding shower side valve seats are installed on the mixing flow path in the center of the main body from the primary side of both of these valve seats. It has a valve body, a bus side valve body, and 1
A check valve is installed on the upstream side of the water valve and the hot water valve. , the water valve and the hot water valve each have a valve seat provided in the main body, and an opening formed in a bottomed cylindrical shape and opened opposite to the valve seat. The lid is attached with the bottom wall facing the outside of the main body, and the rear end of the lid, which is attached to the bottom wall of the lid so as to be rotatable and cannot move forward or backward, and is located on the outside of the lid, has an operating handle, and the rear end is located on the inside of the lid. A gasket is interposed between the rear outer circumferential surface and the inner circumferential surface of the lid in the part located at the rear part of the spindle to seal this part, and there is a slight gap between the front outer circumferential surface and the inner circumferential surface of the lid. and a cylindrical part on the back, the cylindrical part being located in a gap between the inner peripheral surface of the lid and the front outer peripheral surface of the spindle, the inner peripheral surface of the cylindrical part and the front outer peripheral surface of the spindle, and a valve in which one of the outer circumferential surface of the cylindrical part and the inner circumferential surface of the lid is screwed, and the other is engaged in a non-rotatable but movable manner, and moves forward and backward by rotation of the spindle to open and close the valve seat. 1. A hot water mixer faucet, characterized in that the valve body has a cylindrical portion and the inside thereof communicates with a flow path through a small gap formed in the threaded portion and the engaging portion.