JP2889009B2 - Hot water mixer tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing tap.

[0002]

2. Description of the Related Art A hot / water mixer tap for mixing and controlling hot water and water to supply mixed water. The set temperature is adjusted by turning an operation lever to the left and right, and the same operation lever is swung up and down. It is well known that the supply amount (flow rate) of mixed water is adjusted (for example, JP-A-60-249784).

In this prior art, a cylindrical opening / closing valve is moved up and down (axially) by swinging an operation lever up and down to open and close a passage of mixed water. When changing the set temperature by rotating left and right,
The on-off valve has a structure in which unnecessary rotation is performed as the operation lever rotates.

[0004]

In the prior art described above, since the on-off valve is not only required to move in the vertical direction necessary to increase or decrease the supply amount of the mixed water, but is also required to perform an unnecessary rotation operation, the on-off valve is required. The sliding distance between the O-ring or packing that is in elastic contact with the on-off valve itself becomes longer and the amount of wear increases, or the force exerted by the O-ring or packing deteriorates, and the sealing performance deteriorates. There is a problem that the reliability of the mixing tap is reduced due to deterioration.

[0005] It is an object of the present invention to provide a hot and cold water mixing tap which can solve such problems.

[0006]

In order to achieve the above object, according to the present invention, a temperature control valve is operated by rotating an operation lever (19) to the left and right to adjust a set temperature and swing up and down. Thus, in the hot and cold water mixing tap that operates the on-off valve to adjust the flow rate of the mixed water, the base (1) of the operation lever (19) is used.
9a, 19b), a support (17) connected to the operating lever (19) to rotate and move up and down according to the rotation and swing of the operating lever (19);
An on-off valve (20) that is rotatably fitted to the support (17), and the support (17) and the on-off valve (20) are rotatable with each other and connected to move vertically. And an E-shaped retaining ring (30) for connecting the both.

[0007]

[Function] When the temperature control valve is operated by turning the operation lever to the left and right to increase or decrease the set temperature, the support connected to the base end of the operation lever rotates together with the operation lever, but the rotation of the support opens and closes. The on-off valve does not rotate without being transmitted to the valve. When the operation lever is swung up and down, the support moves up and down in response to the swing, and the opening and closing valve is interlocked up and down via the retaining ring (30) to adjust the flow rate of the mixed water.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a mixing stopper body, which is a substantially inverted T-shaped hollow body. Mixed water channel 4
Is formed. Reference numeral 5 denotes a substantially cylindrical guide tube, the lower portion of which is fitted into the mixing stopper body 1 coaxially with the upper cylindrical body 1a of the body 1, and the flange 5a of the guide tube 5 has the step of the body 1 sandwiching the O-ring. It is positioned in contact with the part.

Reference numeral 6 denotes a substantially cylindrical outer cylinder which is screwed to the upper cylindrical body 1a of the body 1, and the lower end of the outer cylinder is directly mounted on the body 1 by pressing the flange 5a of the guide cylinder 5. Reference numeral 7 denotes a temperature control valve which is vertically slidably fitted to an inner periphery of a lower portion of the guide cylinder via an O-ring, and a bottomed cylindrical stopper 8 screwed to a lower end of the guide cylinder 5 and a temperature control valve. 7, and is urged upward by a compression spring 9 inserted therebetween.

Reference numeral 5b denotes a water valve seat provided in a water through hole 5c opened in the guide cylinder 5, 5d denotes a hot water through hole opened in the guide cylinder 5, 8a
Is a hot water valve seat formed at the upper end of the stopper 8, and 7a is a hot water passage provided vertically penetrating the center of the temperature control valve 7, and four hot water passages formed in a lower cylindrical portion of the temperature control valve 7 are provided. The hole 7b communicates with the hot water hole 5d. Reference numeral 7c denotes four holes formed in the upper cylindrical portion of the temperature control valve 7, and the hot water passage 7a and the mixing chamber 1
Communicate with 0.

The mixing chamber 10 is formed inside the guide cylinder 5, and a thermo wax 11 is disposed at the center thereof.
An annular groove is provided on the outer periphery of the thermowax 11, and an O-ring is interposed in the annular groove to seal a gap between the thermowax 11 and the inner periphery of the guide cylinder 5. The thermowax 11 is a well-known type that senses the temperature of the mixed water in the mixing chamber 10 and expands and contracts in the vertical direction in accordance with the temperature.

Reference numeral 12 denotes a temperature adjusting screw. A male screw of a trapezoidal right-hand screw provided on the outer periphery thereof is screwed with a female screw engraved on the inner periphery of the guide cylinder 5. Reference numeral 13 denotes a retainer fitted to the lower end of the temperature control screw 12, which is stopped by a retaining ring 14 so as not to come off from the temperature control screw 12. Reference numeral 15 denotes a compression spring inserted between the temperature adjusting screw 12 and the retainer 13, and has a spring force larger than that of the compression spring 9.

The upper end of the thermo wax 11 has a retainer 13.
The lower end is in contact with the upper part of the temperature control valve 7 and is urged upward by the compression spring 9. Reference numeral 16 denotes a shaft serrated and connected to the temperature adjusting screw 12. The upper end of the shaft 16 is fitted into the support 17 so as not to rotate relative to the support 17, and is fixed to the support 17 by a set screw 18. Reference numeral 19 denotes an operation handle. The bifurcated base portions 19a and 19b are fitted and engaged with shallow holes 17a and 17b formed in the support 17, respectively. Utilizing the elasticity of the forked portion of the operating handle 19, the forked portion is expanded so that the base portions 19a and 19b are connected to the holes 17a and 1 of the support 17.
7b. (See FIGS. 5 and 6).

Reference numeral 20 denotes an on-off valve having a substantially cylindrical shape as a whole, and a metal surface is coated with Teflon having a small friction coefficient,
The guide tube 5 is fitted. 21 and 22 are guide cylinders 5
The first and second O-rings provided in the outer peripheral groove of the
Sliding contact with the inner peripheral surface of 23 is the 2 that was opened in the guide cylinder 5
When the water and hot water mixed in the mixing chamber 10 pass through the through holes 13, the flow rate is controlled by the on-off valve 20.

Reference numeral 20a denotes two holes formed in the on-off valve 20, and when these holes 20a are displaced from the through holes 23 as shown in FIG. Becomes zero, and the flow rate of the mixed water becomes maximum in the fully opened state where the hole 20a is located at the position facing the through hole 23 as shown in FIG. 20b
Is a small hole opened near the step of the on-off valve 20 for removing water and air when the on-off valve moves up and down.

Reference numeral 24 denotes a passage opened in the outer cylinder 6 for guiding the mixed water whose flow rate is controlled by the on-off valve 20 to the mixed water flow path 4. A ring-shaped packing 26 made of fluorine rubber and a metal leaf spring 27 for pressing the packing 26 against the inner peripheral surface of the on-off valve 20 are fitted in the through hole 23. The packing 26 is formed of a portion 26a of the same cylindrical surface as the inner peripheral surface of the on-off valve 20 so that one end (outer end) thereof is in close contact with the inner peripheral surface of the on-off valve 20. , Through hole 23
The portions 26b and 26c having a diameter slightly larger than the diameter of are formed (FIGS. 9A and 9B). The large diameter portions 26b and 26c are in close contact with the inner periphery of the through hole 23 to maintain watertightness.

As shown in FIGS. 10 (a) and 10 (b), the leaf spring 27 is a thin metal leaf spring, and has an outer diameter of 13 mm (approximately the same as the outer diameter, a thickness of 0.25 mm). The three arm portions 27a bent slightly incline generate a spring force to press the packing 26 against the inner peripheral surface of the on-off valve 20. The leaf spring 27 is provided in the through hole 23 in the packing 26.
The arm 27a is mounted in a direction facing the packing 26 with the surface indicated by the symbol E of the arm 27a.

The packing 26 fitted as described above is applied to the spring force of the leaf spring 27 and the pressure of the mixing chamber 10 (approximately 4 to 5 kgf).
/ Cm ² ]), and is pressed against the inner peripheral surface of the on-off valve 20 to be in close contact therewith, so that the urging force of the leaf spring may be small. Referring again to FIGS. 1 and 2, reference numeral 28 denotes a fitting for attaching a hot and cold water mixing tap to the wash basin 29, which is substantially cylindrical and has the outer periphery 6 described above.
With the sink 29 interposed between the fitting 2
8 is screwed and fixed to a male screw on the outer periphery of the upper end of the outer cylinder 6.

The upper end of the on-off valve 20 is connected to the lower end of the support 17 by a retaining ring 30 in the form of an E-shaped retaining ring.
7 moves up and down at the same time in response to the up and down movement of the support 7, but does not respond to the rotation of the support 17. A screw 31 shown in FIG. 3 is screwed to the guide cylinder 5, and its screw head fits into a vertically long hole provided in the on-off valve 20 to function as a rotation stopper for preventing the on-off valve 20 from rotating.

The connection structure between the on-off valve 20 and the support 17 is particularly clearly shown in FIG. The retaining ring 30 is fitted into the notch 17c of the support 17, and its claw 30a is
And engages with the annular groove 20b on the outer periphery of the upper end of the cylinder 0 so as to be relatively rotatable. Thus, the on-off valve 20 moves up and down following the up and down movement of the support 17, but does not follow the rotation of the support 17.

1 and 2, reference numeral 32 denotes a fitting 28.
An intermediate portion of the operating lever 19 is sandwiched between the end surface 32a of the inner cover and the end surface 28a of the fitting 28, and the operating lever 1 is used as a fulcrum.
9 is supported so as to be able to swing up and down (FIGS. 1, 2 and 8). An outer cover 33 is further screwed onto the fitting 28, and a set screw 34 for preventing rotation is screwed to the outer cover 33 to press the outer periphery of the fitting 28. 35 is a cap fitted and fixed to the upper end of the inner cover 32 (FIGS. 1 and 2).

A temperature scale 33a is displayed on the upper surface of the outer cover 33, as shown in FIG.
It is a guide when changing the set temperature by rotating. The two O-rings 21 and 2 provided on the guide cylinder 6
2 is located above and below the packing 26 of the through-hole 23 even when the operating lever 19 is fully opened in FIG. 1 in which the operating lever 19 is lowered to the lower limit position, and when the operating lever 19 is fully opened in FIG. Then, the on-off valve 20 is always in sliding contact with the on-off valve 20, and the on-off valve is reliably centered in all states of the on-off valve 20. The number of O-rings for guiding the on-off valve (20) may be more than two. Incidentally, reference numeral 36 designates an O for an on-off valve provided inside the outer cylinder 6.
It is a ring. The O-rings 21 and 22 are made of the same fluoro rubber as the packing 26 so that the elasticity of the O-rings 21 and 22 is not reduced over a long period of use. Has been given.

In the above embodiment, when the tip of the operating lever 19 is moved upward, the opening / closing valve 20 moves down together with the support 17, and the hole 20a of the opening / closing valve 20 faces the through hole 23 of the guide cylinder 5 so that the mixed water is removed. It flows to the mixed water channel 4. Operation lever 1
When the shaft 9 and the temperature adjusting screw 12 are rotated left and right as viewed from above, the shaft 16 and the temperature adjusting screw 12 are rotated together with the support 17, and the temperature adjusting screw 12 is moved up and down. When the temperature adjusting screw 12 moves upward, the thermo wax 11 and the temperature adjusting valve 7 move upward, so that the temperature adjusting valve 7 closes the gap with the water valve seat 5b and widens the gap with the hot water valve seat 8a. To raise the temperature of the mixed water. When the temperature adjusting screw moves downward, the temperature adjusting valve 7 moves downward to lower the temperature of the mixed water.

[0024]

Since the mixing tap of the present invention is constructed as described above, the on-off valve does not rotate even if the operating lever is rotated left and right to change the set temperature. Then, when the operation lever is moved up and down to adjust the flow rate of the mixed water, the on-off valve only moves up and down. Therefore, the sliding distance of the on-off valve with respect to the O-ring and the packing is reduced, and the oblique force does not act. This prevents deterioration of these sealing components and maintains the sealing performance for a long time. Performance can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, showing a valve closed state.

FIG. 2 is a longitudinal sectional view of the embodiment of the present invention, showing a valve open state.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a top view of the embodiment of the present invention.

FIG. 5 is a partial cross-sectional plan view showing the periphery of the operation lever according to the embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a part of the embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

FIG. 8 is a perspective view around an operation lever according to the embodiment of the present invention.

9A and 9B are diagrams of the packing according to the embodiment of the present invention, in which FIG. 9A is a plan view, and FIG. 9B is a cross-sectional (longitudinal) cross-sectional view of FIG.

FIGS. 10A and 10B are views of a leaf spring according to an embodiment of the present invention, wherein FIG. 10A is an enlarged front view and FIG. 10B is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 Reference Signs List 5 Guide cylinder 10 Mixing chamber 11 Thermo wax 17 Support 19 Operating lever 19a, 19b Base 20 On-off valve 21, 22 O-ring 23 Through hole 26 Packing 27 Leaf spring 30 Retaining ring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-249784 (JP, A) JP-A-1-266383 (JP, A) JP-A-1-269778 (JP, A) 166180 (JP, U) JP-A-1-158873 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16K 31/68

Claims (1)

(57) [Claims] 1. A temperature control valve is operated by turning an operation lever (19) to the left and right to increase or decrease a set temperature, and by swinging up and down, an open / close valve is operated to adjust a flow rate of the mixed water. A support (17) that is connected to the bases (19a, 19b) of the operation lever (19) and that rotates and moves up and down in accordance with the rotation and swing of the operation lever (19).
An on-off valve (20) rotatably fitted with the support (17); a support (17) and an on-off valve (20)
A tap ring (30) in the form of an E-shaped snap ring that connects the two so as to be rotatable with each other and to move in the vertical direction.