JP2551865Y2 - Faucet valve device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device for a faucet such as a faucet for tap water, a mixed faucet for hot / cold water, and a flow switching faucet for a hot water washer for a toilet.

[0002]

2. Description of the Related Art Among faucet valve devices generally used for domestic water supply and the like, those shown in FIGS. 4 to 8 are well known as valve devices for mixing hot water and cold water.

In this apparatus, an outlet channel 2 for hot water is provided on a side surface of a housing 1 covering a valve device, and an inlet channel for supplying water or hot water to a base 12 in communication with a water pipe or a water heater. 3 and 4.

[0004] The valve housing recess 5 of the housing 1 is provided.
The valve body 6, the valve body 7, and the guide plate 8 are housed on the base 12 in a state of being overlapped in order from the bottom, and are mounted on a cylindrical lever holder 9 rotatably held inside the housing 1. A lever 10 for operating the body 7 is swingably mounted via a horizontal shaft 18.

Here, the valve element 6 is fixed to the base 12 by fitting with the inner diameter surface of the housing 1 and a projection 11 provided on the base 12, and a pair of inflow passages 13 and 14 are formed by a predetermined arrangement of the valve element 7. It is formed in a C shape so as to communicate with the outflow path 2 and the inflow paths 3 and 4 of the housing 1. Further, the valve element 7 is a disk having a smaller diameter than the inner diameter of the valve housing concave portion 5, is sandwiched between the guide plate 8 and the valve element 6, and is slidable with respect to the valve element 6 and the guide plate 8. At the same time, the sliding surface on the valve body 6 side is cut out so that the flow passage 15 can communicate with the outflow passage 2.

Further, a rubber packing 16 is incorporated between the valve body 6 and the base 12, and the elasticity of the packing 16 and the O-ring 19 allows the base 12 and the valve body 6, the valve body 6 and the valve body 7, The space between the valve element 7 and the guide plate 8 is sealed. A square shaft hole 7a is formed in the center of the upper surface of the valve body 7, and the shaft neck 10a of the lever 10 is fitted therein. At this time, a rectangular box-shaped straight bush 7b made of metal such as stainless steel is fitted into the inside of the shaft hole 7a in a fixed state, or a lubricant such as silicone grease is applied to improve the slidability. , Protects the valve element 7. Further, the valve element 7 and the lever 10 are interlocked via a link rod 17,
The link rod 17 is supported by a lever holder 9 on a horizontal shaft 18, and the valve body 7 is driven in a linear direction (left and right directions in the figure) by moving the lever 10 up and down. I do. In this way, the valve device for faucet is
By the displacement of the flow passage 15, hot water / cold water and mixed water can be taken out and plugged.

FIGS. 1 and 5 show a closed state in which the valve element 7 is displaced most to the right in FIG. 1 and the flow path 15 is not in communication with either of the inflow paths 13 and 14, and FIG. FIG. 7 shows the position of the valve element 7 communicating with one of the inflow paths 13, showing a state in which hot or cold water is taken out alone. FIG. 7 shows the valve element 7 in which the flow path 15 communicates with both the inflow paths 13 and 14. And the state of taking out the mixed water.

The valve device described above adjusts the flow rate or changes the flow path in accordance with the state of sliding between the sliding surfaces of the valve bodies 6 and 7, and is used for mixing hot and cold water with a mixing tap. The present invention is not limited to this, and can be used for switching the flow path of a hot water washing device installed in a toilet or the like.

[0009] The valve elements 6 and 7 of such a valve device, when foreign matter enters the sliding contact surface, deteriorates the sealing performance and causes water leakage or impeded water discharge. Very low surface roughness. Alternatively, the valve body is composed of a resin having self-lubricating properties such as fluororesin, ultra-high molecular weight polyethylene, polyacetal or a resin filled with a filler such as molybdenum disulfide or carbon which enhances lubricating properties (for example, Japanese Patent Application Laid-Open No. 63-36765). It is known that the slidability is improved.

[0010]

However, in the above-described conventional faucet valve device, the lever is moved vertically (in the direction of the arrow in FIG. 4).
, The axle 10a swings along an arc centered on the horizontal axis 18, but at this time, the axle 10a
Since the side wall a is pressed obliquely up and down either directly or via the straight bush 7b, the valve body 7 rattles up and down. Such rattling of the valve element and the resulting reduction in lever operability are particularly remarkable when the sliding portion expands when hot water is allowed to flow out. The challenge was to obtain a simple lever operability.

[0011]

In order to solve the above-mentioned problems, the present invention employs a structure in which a guide cap that moves vertically in the shaft hole is interposed in a sliding contact portion between the shaft neck and the shaft hole. It was done.

[0012]

In the faucet valve device according to the present invention configured as described above, the shaft of the lever that swings about the horizontal axis is fitted into the shaft hole via the guide cap that moves in the vertical direction. . Therefore, of the pressing force for driving the valve element, the vertical component force is absorbed by the vertical sliding movement of the guide cap, and only the left and right component force is transmitted to the valve element. The rattling of the body is suppressed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In the embodiment, the base 1 inside the housing 1 is shown.
A valve body 6 made of a high-hardness ceramic and a valve body 7 made of polyphenylene sulfide resin (manufactured by Tosoh Sastile Co., Ltd .: Sastile CH-30) are stacked on the upper surface of the housing 2 in order from the bottom. A horizontal shaft 18 is supported on a movably held polyacetal resin lever holder 9, and a link rod 17 and a lever 10 are attached to the lower surface of the lever holder 9 to form a downwardly projecting ring-shaped projection 9 a. This is brought into sliding contact with the upper surface of the uppermost valve element 7 in a liquid-tight and direct manner. In this case, packing 1
The thickness of the sliding contact surface is adjusted by appropriately changing the thickness of 6.

As shown in FIG. 2, the shaft hole 7a of the valve body 7 is
An axle 10a, which is a rectangular body forming a rectangular opening and having a curved surface at the tip end, is fitted through a guide cap 7c. The guide cap 7c is a substantially rectangular solid whose outer shape is slightly smaller than the shaft hole 7a, and is vertically and longitudinally and longitudinally and laterally (in the longitudinal direction of FIG. 1 when used) in the axial hole 7a. Idle. The guide hole 7d opening on the upper surface of the guide cap 7c has a circular groove-shaped bottom surface (see FIG. 1) corresponding to the outer shape of the axle 10a, and the narrow opening allows the tip of the axle 10a to be forcibly inserted. It is formed in size. Such a guide cap 7c may be formed of a self-lubricating resin such as ultra-high molecular weight polyethylene, or may be formed of a general-purpose resin having high rigidity, for example, polyethylene to which carbon fiber is added, or a rigid metal. It is preferable to use a molded article coated with a resin having lubricity.

The operation of the above embodiment will be described with reference to FIG.

When the lever 10 is raised to adjust the amount of water, the link rod 17 swings about the horizontal axis 18,
The shaft neck 10a moves within the shaft hole 7a along an arc in the direction of the arrow in the figure, and presses the guide cap 7c obliquely upward against the side wall of the shaft hole 7a. At this time, the guide cap 7c having a circular groove-shaped curved surface on the inside rises along the side wall of the shaft hole 7a, so that only a component force in the left horizontal direction in FIG. The movement of the valve body 7 is smooth. Similarly, the component force of the axle 10a when the lever 10 is lowered acts only in the right horizontal direction in the figure.

When the lever 10 is rotated horizontally to adjust the water temperature, the axle 10a rotates the guide cap 7c, and the ring-shaped projection 9a of the lever holder 9
Since it rotates together with the valve body 7 in a state of being in liquid-tight contact with the valve body 7, smooth operability of water temperature adjustment can be obtained as in the related art.

In the above embodiment, the guide cap has a substantially rectangular outer shape. However, the same result can be obtained by using a cubic, polygonal prism or other polyhedron. If is not a curved surface but a polyhedron, it goes without saying that a shaft hole may be formed to match the shape.

Further, a practical function test shown below was performed on the above-described embodiment, and the same test was performed on the faucet valve device shown in FIG. 4 as a comparative example.

(1) Practical function test: Using a single lever type mixing faucet KM300N manufactured by Kitamura Valve Co., Ltd., the valve body 7 and the lever holder 9 of FIG. 1 are made of the resin shown in this embodiment, and before the durability test. Were subjected to an initial torque test and a water stop test. In the torque test, the torque of the lever up and down (water stoppage, flow, flow rate control) and left and right (temperature control of hot water and cold water) is measured using a digital force gauge DFG-2K manufactured by Shinpo Kogyo Co., Ltd. In the test,
With the lever in the lower center position (water stopped state), the water pressure was applied to a maximum of 17.5 kgf / cm ² by a pump, and the maximum water pressure at which no water leaked for 1 minute was measured.

In these initial tests, the torque was 5 kg.
The same single-lever mixed water as the one that was initially tested on a single-lever mixed faucet durability tester (not shown) for water that was completely shut off at a water pressure of 17.5 kgf / cm ² or less at f · cm or less Connecting the lever 10 of the stopper, FIG.
As shown in the figure, the lever 10 is moved from the upper right end Ru to the lower right end Rd.
(Cold water) → lower left Ld (hot water 90 ° C) → upper left Lu (water stoppage) → lower left Ld (hot water 90 ° C) → lower center Cd (hot water) →
Upper center Cu (water stop) → lower center Cd (warm water) → lower right Rd
(Cold water) → Russian test of 200,000 cycles was performed with one cycle of the upper right Ru (water stoppage) (duration about 25 seconds).
The torque and the water stoppage after the test of 10,000 cycles and 200,000 cycles were confirmed in the same manner as in the initial stage.

As a result, no difference was observed between the above example and the test result of the comparative example.
There was no leakage at a water pressure of kgf / cm ² , the handle torque was low and stable, and the lever and valve element did not rattle.

[0024]

The valve device for a faucet of the present invention, when the lever is moved up and down as described above, does not apply unnecessary force in the vertical direction to the valve body, and smoothly moves the valve body in the horizontal direction. Drive. Therefore, the faucet valve device can always obtain light lever operability, and it can be said that the significance of this invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment.

FIG. 2 is an enlarged perspective view of a main part of the above.

FIG. 3 is a longitudinal sectional view for explaining the operation of the guide cap of the above.

FIG. 4 is a longitudinal sectional view of a conventional example.

FIG. 5 is a cross-sectional view of a valve body for explaining an operation mechanism of the faucet.

FIG. 6 is a cross-sectional view of a valve body for explaining an operation mechanism of the faucet.

FIG. 7 is a cross-sectional view of a valve body illustrating an operation mechanism of the faucet.

FIG. 8 is a perspective view showing the appearance of a faucet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 6, 7 Valve body 7a Shaft hole 7c Guide cap 9 Lever holder 10 Lever 10a Shaft 12 Base 18 Horizontal shaft

Claims (1)

(57) [Scope of request for utility model registration] An uppermost valve body having two or more valve bodies slidably superimposed on a base inside a housing, and a notch or a through hole for opening and closing a flow path is formed in these valve bodies. A shaft hole is formed on the upper surface of the water faucet. The shaft hole of the lever for operating the valve body is fitted into this shaft hole, and this lever is swingably held on a lever holder inside the housing via a horizontal shaft. A valve device for a water faucet, wherein a guide cap that moves vertically in the shaft hole is interposed in a fitting portion of the valve neck with the shaft hole.