JPH0734264U - Cartridge for hot and cold water mixing tap - Google Patents

Abstract

(57) [Summary] [Objective] To provide a cartridge for hot and cold water mixing taps, which has good operability, high sealing performance, a small number of parts, good assembling, and low cost. [Configuration] Hot water inlet 7, water inlet 8 of the hot and cold water mixing valve body 1
Valve body 23 having a hot water valve hole 23, a water valve hole 24, and a mixed water valve hole 25 communicating with the hot and cold water mixed water discharge port 9
16 is integrally formed of hard synthetic resin material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a replaceable cartridge for hot and cold water mixing taps.

[0002]

[Prior art]

 A hot and cold water mixing plug in which hot and cold water is mixed at an appropriate ratio by a lever operation and hot water of a desired temperature is discharged is disclosed, for example, in Japanese Utility Model Publication No. 63-2706.

This hot and cold water mixing valve has valve holes for hot water and water, which are respectively communicated with hot water and a water intake side, and a valve hole for mixed water, which is communicated with a discharge side of the mixed water. A movable disk made of ceramic, which was slidably mounted in a watertight state on a fixed disk made of ceramic, was provided on the upper part of the main body through a support member made of synthetic resin placed on the fixed disk. There is an internal flow path that is interlocked with the lever and that extends over the movable disk and the support member and that circulates the hot water introduced from the hot water and water valve holes and the water to the mixed water valve hole. It is formed so that the mixing ratio of hot water and water can be adjusted appropriately by operating the lever.

Since the above-mentioned fixed disk is made of ceramic and has a difficulty in molding and machining, a lower disk made of a synthetic resin material or the like is arranged under the fixed disk, and the lower disk is in a watertight state at the bottom of the case. Is attached to.

[0005]

[Problems to be solved by the device]

 However, as described above, when the fixed disk and the movable disk both made of ceramic are slid, a sticking phenomenon called ringing may occur, which makes it difficult to operate the lever.

Further, in the two-disc construction in which the fixed disc is mounted on the lower disc, sealing is required on the upper, lower, both sides, and side faces of the fixed disc, which increases the number of water leakage elements and increases the sealing performance. There is also the problem that improvement is difficult. Furthermore, the number of parts is large, and the number of assembling steps in the manufacturing process is increased, resulting in high cost.

The present invention has been made in view of the above circumstances, and provides a hot and cold water mixing tap cartridge with improved operability, high sealing performance, a small number of parts, good assembly, and low cost. It is an object.

[0008]

[Means for Solving the Problems]

 The present invention has means for solving the above-mentioned problems as follows. That is, in a cartridge that is replaceably loaded into the main body of a hot and cold water mixing tap having a hot water inlet, a water inlet, and a hot and cold mixed water discharge outlet, the cartridge is fixed in a watertight manner at the bottom of the case body of the cartridge. The movable valve body is mounted on the fixed valve body so as to be in sliding contact with itself in a watertight state, and the movable valve body is connected to a lever having an upper end protruding above the main body of the hot and cold water mixing valve. The fixed valve body has a hot water valve hole and a water valve hole respectively communicating with the hot water inlet port and the water inlet port, and a mixed water valve hole communicating with the hot water / water mixed water discharge port. On the other hand, the movable valve element is integrally formed of a resin material, and the movable valve element is mounted on the movable disk and a movable disk made of ceramic that is in sliding contact with the fixed valve element. Consisting of a support member to be engaged, and It is characterized in that a hot water valve hole of the fixed valve body and an internal flow path for circulating hot water introduced from the water valve hole to the mixed water valve hole are formed across the moving disk and the support member. There is.

[0009]

[Action]

 By integrally forming the fixed valve body with a synthetic resin material with good workability, the number of parts is reduced, assembly is improved, and cost is reduced.

Further, since the ceramic movable disk is brought into sliding contact with the fixed valve body made of a synthetic resin material, the operation becomes smooth, problems such as ringing are avoided, and operability is improved.

Further, since the fixed valve body is integrally formed, the number of water leakage elements is reduced and the sealing performance is improved.

[0012]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a vertical cross-sectional view of the hot and cold water mixing tap, FIG. 2 is a longitudinal rear view, and FIG. 3 is an exploded view. Reference numeral 1 is a hot and cold water mixing tap main body (hereinafter referred to as a main body), and the main body 1 is a partition wall 2. Therefore, it is partitioned into an upper valve chamber 3 and a lower hot water chamber 4, a water chamber 5 and a water discharge hole 6, and the partition wall 2 has a hot water inlet 7 and a water inlet 8 and hot and cold mixed water. Discharge port 9 and each are opened.

A replaceable cartridge 10 is loaded in the valve chamber 3 in a watertight state with the valve chamber 3, and an attachment 12 for hot water communication having a hot water flow hole 11 is provided at the hot water inlet 7. Further, the water inlet 8 is fitted with a water-communication attachment 14 having a water circulation hole 13.

The case 10A of the cartridge 10 has an open bottom, and a plurality of engaging recesses 10a having different circumferential lengths are formed on the inner peripheral surface of the lower end at predetermined intervals in the circumferential direction. At the bottom of the case body 10A, a fixed valve body 16 integrally formed of a synthetic resin material is fixedly mounted in a watertight state, and on the fixed valve body 16 a movable disk 18 made of ceramic is provided. Are mounted in close contact with each other so as to be freely slidable and rotatable, a support member 19 made of a synthetic resin material is non-rotatably mounted on the movable disk 18, and further, on the support member 19, a composite member is formed. A disk guide 20 made of a resin material is slidably mounted, and the movable disk 18, the support member 19 and the disk guide 20 constitute a movable valve body 17.

A lever 21 made of a metal material is pivotally attached to the disc guide 20 described above, the lower end of the lever 21 is engaged with the recess of the support member 19, and the upper end thereof is made of a synthetic resin material for operation. The handle 22 of is fixed. On the shoulder 10c below the upper opening 10b, engaging projections 10d, 10d are integrally formed, which are projected outward at predetermined intervals in the circumferential direction, and the engaging projections 10d, 10d are formed. The fitting notches 1b, 1b formed in the opening 1a of the main body 1 are fitted to regulate the fitting relative positions of the two.

The above-mentioned fixed valve body 16 is integrally formed of a hard resin material such as carbon fiber reinforced type of polyferrene sulfide resin to improve the sealing property, reduce the number of parts, and prevent ringing. It is supposed to prevent this and improve operability.

More specifically, the fixed valve body 16 is a combination of a conventional fixed disk and a lower disk, and is used for the hot water inlet 7, the water inlet 8 and the hot and cold water mixture outlet 9 of the main body 1. , A hot water valve hole 23, a water valve hole 24, and a mixed water valve hole 25 that communicate with each other are formed, and a packing material is inserted into each of the holes, and the entire length of the peripheral edge of the bottom wall is An upward rising wall 27 is integrally formed thereover, and the fixed valve body 16 is fitted therein. Further, on the outer peripheral surface of the lower end of the rising wall 27, a projecting piece 15a that is fitted into the engaging recess 10a of the case body 10A and defines the relative fitting position of the both is integrally provided.

The opening shape on the lower surface side of the hot water valve hole 23, the water valve hole 24, and the mixed water valve hole 25 described above is formed in a circular shape, but the opening shape on the upper surface side is shown in FIG. As shown, the hot water valve hole 23 is formed in the main body 1 through the hot water inlet port 7 and the water inlet port 8 formed in the main body 1 through the hot water flow holes 11 and 13 of the attachments 12, 14. , The water valve holes 24 are communicated with each other, and the hot and cold water mixed water discharge ports 9 are communicated with the mixed water valve holes 25. The hot water inflow passage a, the water inflow passage b, and the mixed water outflow passage c. Are formed (see FIG. 4).

As described above, this fixed valve body 16 is easy to mold using a synthetic resin material, and is easy to machine, and the number of parts can be reduced and the assemblability is extremely good. Easy to make and cheap to get. In addition, since its hardness is lower than that of the movable disk 18 made of ceramic, mutual sliding contact operations are smooth, problems such as the occurrence of ringing are eliminated, and compared to the conventional ceramics sliding contact The operability is remarkably improved.

Further, by integrally forming the fixed valve body 16, the sealing property is remarkably improved. That is, when two fixed valve bodies are composed of a fixed disc and a lower disc as in the conventional case, upper and lower surfaces and a vertical seal are required, but an integrated fixed valve body is required. The 16 has only the top and bottom seals, and has fewer water leakage elements.

The movable disc 18 of the movable valve body 17 corresponding to the fixed valve body 16 is formed of a ceramic material like the fixed valve body 16, and the mixed water valve of the fixed valve body 16 is formed in the central portion. A long hole 31 which is always communicated with the hole 25 and which is selectively communicated with the hot water valve hole 23 and the hot water valve hole 24 is formed, and a peripheral wall 32 which rises upward is integrally formed on the peripheral edge. Is formed in Further, notched step portions 33 are formed on the upper peripheral surface of the peripheral wall 32 at predetermined intervals in the circumferential direction (in the illustrated example, a target position around the axis of the movable valve body 17).

Since the support member 19 of the movable valve body 17 is made of plastic, as shown in FIG. 2, a packing 34 is provided inside the peripheral wall 32 of the movable disk 18 on the lower surface of the central portion. A disc-shaped fitting body 35 that is fitted in a watertight manner via the projection is integrally provided. Further, a concave portion 36 having a size similar to that of the long hole 31 of the movable disk 18 is formed in the central portion of the fitting body 35, and this concave portion 36 is an example of a rectifying body for preventing cavitation and silencing. A certain rectifying fin 37 is integrally formed. A plurality of the rectifying fins 37 are provided at predetermined intervals in a direction orthogonal to the long axis direction of the long hole 31 of the movable disk 18 and have a length over the entire length of the concave portion 36 in the long axis direction (see FIG. In the example, 5 sheets are arranged. The downward projecting edges of the rectifying fins 37 are set to have a size that projects outward from the back surface of the fitting body 35, and the specific size of the projecting amount is such that the support member 19 is attached to the movable disk 18. When fitted, the rectifying fin 37 is fitted into the elongated hole 31, and the protruding edge thereof is set to leave about 1/4 of the lower portion of the elongated hole 31. Therefore, one or both of the hot water inflow passage a and the water inflow passage b communicate with the mixed water outflow passage c when the movable valve body 17 is in the valve open position by the elongated hole 31 and the recessed portion 36. The internal flow path d for forming is formed, and the rectifying fins 37 are arranged in the internal flow path d.

Although the rectifying fins 37 are arranged via the recessed portions 36 formed in the support member 19 in the illustrated example, the fitting body may be formed without forming the recessed portions 36 as needed. The structure may be such that it is provided directly from the back surface of 35.

In addition, a pair of guide ridges 38 are provided on the surface side of the support member 19 in parallel with the longitudinal direction of the recessed portion 36 and spaced apart from each other by a predetermined distance, and on the peripheral edge of the movable disk 18. Protrusions 39 that are fitted to the notch steps 33 formed in the peripheral wall 32 and that regulate the predetermined relative fitting position between the movable disk 18 and the support member 19 are provided integrally with each other. A round hole 19a is formed in the center of the surface between the guide ridges 38.

Further, as shown in FIGS. 2 and 3, the disc guide 20 is formed by using plastic as a material, and the locking projection 40 integrally formed at a proper position on the outer circumference of the cartridge 10. The case body 10A is fitted in an inner groove 41 formed on the inner surface of the case body 10A so as to be rotatable by a certain amount, and a concave groove 42 is integrally formed on the lower surface of the case member 10A. The guide ridges 38 of 19 are slidably inserted, while the lever 21 is axially supported through a pin 44 in a through hole 43 at the center thereof, and the lower end protrusion 21a of the lever 21 is the support member 19. It is configured to be fitted in the round hole 19a.

The cartridge 10 configured as described above is inserted into the valve chamber 3 of the main body 1 and then the cartridge retainer 45 is screwed into the female screw portion 1c formed on the inner surface of the opening 1a of the main body 1 by the cartridge retainer 45. The lower disk 15 is pressed against the upper surfaces of the attachments 12 and 14 by pressing the shoulder portion 10c downward.

Further, a synthetic resin cover 46 for protecting an internal valve element fitted in the valve chamber 3 of the main body 1 is screwed onto the upper portion of the male screw portion 45a of the cartridge retainer 45. Has been.

As shown in FIG. 1, among the inner walls of the through holes 43 of the disc guide 20, the wall surface on the side parallel to the axial direction of the pin 44 for the spindle of the lever 21 is the lever. The upper half is formed to widen upward and the lower half is formed to widen around the position corresponding to the axial center of the spindle pin 44 so that the rocking of 21 can be performed in the front-rear direction. At the same time, on the wall surface corresponding to the shaft center portion of the pin 44, there is integrally formed a ridge 47 protruding toward the pin 44 side and slidably contacting a partial arc surface 21b integrally formed with the shaft supporting portion of the lever 21. It is configured to control water stoppage.

Further, the main body 1 is made up of portions of the attachments 12 and 14 that are fitted into the hot water inlet 7 and the water inlet 8, the peripheral surface of the rising wall 27 of the lower disk 15, and the outer peripheral surface of the cartridge 10. Packing 48 is attached to each part of the mouth that contacts the inner surface of the mouth.

In the above structure, the handle 22 is vertically and horizontally swung with respect to the main body 1, so that the movable disc 18 of the movable valve body 17 slides on the fixed valve body 16 to discharge the mixed water. Is done. In FIG. 1, the hot water and water valve holes 23 and 24 of the fixed valve body 16 are blocked by the bottom wall of the movable disc 18 of the movable valve body 17, and hot water supply and water supply from the hot water chamber 4 and the water chamber 5 are not performed. It is in a still state.

When the operating handle 22 is pushed upward, the lever 21 is rotated counterclockwise in FIG. 1 and the movable valve body 17 is linearly moved forward through the disc guide 20. It is pushed to the side (right side in the figure). Due to the movement of the movable valve body 17, the elongated hole 31 of the movable disk 18 reaches the hot water of the fixed valve body 16 and the opening areas of the water valve holes 23 and 24 at the same time to open the hot water and water inflow passages a and b. Then, hot water and water flow into the internal flow path d from the hot and cold water valve holes 23 and 24, and pass through the hot and cold water mixed water discharge port 9 from the mixed water valve hole 25 through the valve chamber 3 of the main body 1. Is discharged from a discharge pipe (not shown).

Next, when the handle 22 for operation is turned to one side, the movable valve body 17 is rotated by the disc guide 20, and only the water valve hole 24 of the fixed valve body 16 is moved to the movable disc of the movable valve body 17. The hot water valve hole 23 is closed by the movable disk 18 so that only water flows into the internal flow path d, and the mixed water valve hole 25 allows the valve chamber of the main body 1 to be aligned. It is discharged from the discharge pipe (not shown) through the hot and cold water mixed water discharge port 9 via the nozzle 3.

On the contrary, when the operating handle 22 is turned to the other side, the movable valve body 17 is rotated by the disc guide 20 in the opposite direction to the previous direction, and only the hot water valve hole 23 of the fixed valve body 16 is rotated. Is aligned with the elongated hole 31 of the movable disk 18 of the movable valve body 17, and the water valve hole 24 is closed by the movable disk 18, so that only hot water flows into the internal flow path d, and the mixed water valve hole It is discharged from a discharge pipe (not shown) through the hot water mixed water discharge port 9 through the valve chamber 3 of the main body 1 from 25.

Further, when hot water or water alone is supplied, if the operating handle 22 is pushed upward by an appropriate amount, the movable valve body 17 is pushed to the front side of the main body 1 and the long hole 31 of the movable disc 18 is moved. The matching opening between the hot water valve hole 23 or the hot water valve hole 24 is reduced, and the flow rate is reduced.

Further, the turning amount of the operating handle 22 to the right and left is adjusted so that the long hole 31 of the movable disk 18 and the hot water valve hole 23 and the water valve hole 24 of the fixed valve body 16 can be adjusted. By adjusting each matching opening, the supply amount of hot water and water is changed and the temperature of the mixed water is set appropriately, and the length of the movable disk 18 can be increased by rotating the operating handle 22 in the vertical direction. The relative ratio of the matching openings of the hole 31 and the hot water valve hole 23 of the fixed valve body 16 and the water valve hole 24 remains constant, and the hot water is adjusted by adjusting the respective matching opening amounts. The flow rate of water is changed appropriately. It is said that the above-mentioned operation of each handle can be smoothly performed at all times by the sliding contact between the movable disk 18 made of a ceramic material and the fixed valve body 16 made of a resin material, and the problems such as the occurrence of ringing are eliminated. Not too long.

By the way, at the time of this water flow, hot water and water pass through the rectifying fins 37 provided in the internal flow path d. The rectifying fins 37 work to miniaturize bubbles that cause noise during water flow and muffle them. That is, the generated bubbles are miniaturized by the resistance of the flow-regulating fins 37, and the water flow noise due to the bubbles is suppressed and silenced. Further, the rectifying fins 37 give directionality to the flow lines of the hot water and the water flowing into the inner flow path d, and the hot water, water and the mixed water in the discharge pipe direction flow quickly without stagnation or swirling. Therefore, the hot water, water, and mixed water are made into a laminar flow without being disturbed, and cavitation does not occur.

[0037]

[Effect of device]

 As described above, according to the present invention, a watertight state is provided at the bottom of the case body of the cartridge that is replaceably loaded in the body of the hot and cold water mixing tap having the hot water inlet, the water inlet, and the hot and cold water mixture discharge outlet. The fixed valve body that is fixed to has a hot water valve hole, a water valve hole, and a mixed water valve hole that communicate the hot water inlet port, the water inlet port, and the hot and cold mixed water discharge port, respectively, and are rigid. Since it is integrally formed from a different synthetic resin material, the number of parts is reduced, the assemblability in the manufacturing process is improved and the cost is reduced. Further, since the ceramic movable disk is brought into sliding contact with the fixed valve body made of a synthetic resin material, the operation becomes smooth, occurrence of problems such as ringing is avoided, and operability is improved. Further, since the fixed valve body is integrally formed, the number of water leakage elements is reduced and the sealing performance is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a hot and cold water mixing valve showing an embodiment of a cartridge for hot and cold water mixing valve of the present invention.

FIG. 2 is a rear view of the same section.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is an explanatory diagram of each flow path.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body of hot and cold water mixing tap, 7 ... Hot water inlet, 8 ... Water inlet, 9
... Hot water mixed water discharge port, 10 ... Cartridge, 10A ... Case body, 16 ... Fixed valve body, 17 ... Movable valve body, 18 ... Movable disc,
19 ... Support member, 21 ... Lever, 23 ... Hot water valve hole, 24 ... Water valve hole, 25 ... Mixed water valve hole, d ... Internal flow path.

Claims (1)

[Scope of utility model registration request] 1. A cartridge, which is replaceably loaded into a main body of a hot and cold water mixing stopper having a hot water inlet, a water inlet and a hot and cold mixed water discharge outlet, the cartridge being fixed in a watertight state at the bottom of a case body of the cartridge. The movable valve body is mounted on the fixed valve body such that the movable valve body can be slidably contacted in a watertight state, and the movable valve body is connected to a lever having an upper end protruding above the hot and cold water mixing valve body, and the fixed valve body is fixed. The valve body has a hot water inlet, a hot water valve hole that communicates with the water inlet, a water valve hole, and a mixed water valve hole that communicates with the hot water mixed water discharge port. While being integrally formed of a material, the movable valve body is mounted on and integrated with a movable disc made of ceramic that is in sliding contact with the fixed valve body, and is engaged with the swing end of the lever. And its movable A hot water valve hole of the fixed valve body, and an internal flow path for circulating hot water introduced from the water valve hole to the mixed water valve hole are formed across the disc and the support member. Cartridge for hot and cold water mixing tap.