JP4582513B2 - Faucet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water faucet, and more particularly to a water faucet that is attached to a wall surface or the like and is suitably used for water supply to, for example, a washing machine.
[0002]
[Prior art]
What is shown in FIG. 3 is known as a water tap attached to a wall surface and used for water supply to a washing machine. The water faucet (200) of FIG. 3 has a water faucet body (201) made of a casting, and has a water inlet (202) opened rearward at the rear end, and at the front end. It has a valve unit housing opening (203) that is open and a water outlet (204) that is open downward, and a substantially U-shaped partition wall (205) as viewed from the side is provided in the front end portion of the faucet body (201). A water passage hole (206) is formed in the upper horizontal portion (205A) of the partition wall (205), and a valve seat (207) is provided on the upper peripheral edge of the water passage hole (206). The faucet body (201) has a shape in which a front end portion thereof is greatly bulged forward because it is necessary to provide a secondary flow path in front of the partition wall (205). On the other hand, the valve body unit (208) accommodated in the water faucet body (201) through the valve body unit accommodation port (203) is a rubber valve body which is brought into contact with or separated from the valve seat (207). (209), a male screw (209) attached to the lower end, a handle (210) attached to the upper end, and a female screw (203A) provided in the valve body accommodating port (203) 211A) and a spindle (211). A rubber packing (212) is interposed between the spindle (211) and the valve body unit accommodation port (203) to seal the gap, and the packing (212) is connected to the valve body unit accommodation port ( 203) is pressed from above by a holding nut (213) screwed into a male screw (203B) provided on the outer peripheral surface of the upper end portion of 203).
[0003]
[Problems to be solved by the invention]
When the water faucet body (201) having a complicated internal structure as shown in FIG. 3 is made by casting, a core having a complicated structure corresponding to that must be used, and when molten metal is poured into the mold. In many cases, a thin part of the core breaks or the gas generated from the core due to the heat of the molten metal does not escape sufficiently, resulting in defective products. It was.
[0004]
In addition, due to the structural constraints as described above, the faucet body (201) has to have a shape with its front end greatly bulging forward, so that it does not look good and the protruding length from the wall surface is short. Therefore, there was a limit to space saving.
[0005]
Further, in the water tap (200), the packing (212) that seals the gap between the valve body (209) and the spindle (211) and the valve body unit accommodation port (203) is made of rubber. Therefore, when used for a long period of time, deformation, deterioration, etc. may occur and there may be a problem of water leakage. In addition, when the hydrant (200) is used for supplying water to the fully automatic washing machine, when the water is automatically stopped at the water introduction part of the washing machine, the water inside the hydrant body (201) A high water pressure is applied to the rubber packing (212) sealing the gap between the spindle (211) and the valve body unit accommodation opening (203) due to the reverse flow. Therefore, in this case, in particular, the sealing function of the packing (212) is likely to be deteriorated, and there is a problem that water leaks from the gap between the spindle (211) and the valve body unit accommodation port (203).
[0006]
The object of the present invention is to achieve a reduction in the occurrence rate of defective products and cost reduction of the faucet body and improve the appearance of the faucet body for a faucet that is attached to a wall surface and used for water supply to a washing machine, for example. In addition, it is to enable space saving. Another object of the present invention is to prevent water leakage even when the water tap is used for a long period of time, and to prevent the problem of water leakage even when used for supplying water to a fully automatic washing machine or the like. .
[0007]
[Means for Solving the Problems]
A water faucet according to the present invention includes a water faucet body composed of a vertical cylindrical portion and a horizontal cylindrical portion extending rearwardly connected to a peripheral wall of the vertical cylindrical portion, and a valve cartridge inserted and fixed in the vertical cylindrical portion. A communication hole is provided in a portion of the peripheral wall facing the horizontal cylindrical portion, a rear end portion of the horizontal cylindrical portion is a water inlet, a lower end portion of the vertical cylindrical portion is a water outlet, and the valve cartridge is A cylindrical casing having a water introduction hole communicating with the communication hole in the peripheral wall, a fixed valve plate with a vertical water passage disposed and fixed at a lower end portion of the casing, and vertical water that is pivotally stacked on an upper surface of the fixed valve plate A movable valve plate with a passage, a fixed seal plate with a vertical through-hole disposed and fixed at the upper end of the casing, and a movable seal plate that is pivotally stacked on the lower surface of the fixed seal plate so as to close the vertical through-hole. A connecting member whose end is engaged with the movable valve plate and whose upper end is engaged with the movable seal plate, and is inserted through the vertical through-hole, the lower end is engaged with the movable seal plate, and the handle attachment portion is located at the upper end. And the movable valve plate is pressed against the upper surface of the fixed valve plate and the movable seal plate is pressed against the lower surface of the fixed seal plate by the water pressure introduced into the casing from the water introduction hole. The movable valve plate is rotated by a predetermined angle via the spindle, the movable seal plate, and the connecting member so that water discharge or water stop is performed.
[0008]
In the water tap according to the present invention, the valve cartridge is further interposed between the movable valve plate and the movable seal plate, and compresses the movable valve plate against the upper surface of the fixed valve plate and the movable seal plate against the lower surface of the fixed seal plate. May have a spring.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show an embodiment of a water tap according to the present invention. In the following description, “front” refers to the left in FIG. 1, and “rear” refers to the right in FIG.
[0010]
As shown in FIG. 1, a faucet (1) according to the present invention comprises a vertical faucet body (2) composed of a vertical tubular portion (2A) and a horizontal tubular portion (2B) extending rearward from the vertical tubular portion (2A). And a valve cartridge (3) inserted and fixed to the tube portion (2A). A communication hole (23) is provided in a portion of the peripheral wall of the vertical cylindrical portion (2A) facing the horizontal cylindrical portion (2B), and a rear end portion of the horizontal cylindrical portion (2B) is a water inlet (21). The lower end of the vertical cylinder (2A) is a water outlet (22). The valve cartridge (3) includes a cylindrical casing (4) having a water introduction hole (41) communicating with the communication hole (23) in the peripheral wall (4A), and vertical water disposed and fixed at the lower end of the casing (4). A fixed valve plate (5) with a passage (51), a movable valve plate (6) with a vertical water passage (61) that is pivotably stacked on the upper surface of the fixed valve plate (5), and an upper end of the casing (4) A fixed seal plate (7) with a vertical through hole (71) that is disposed and fixed to a movable seal plate (7) that is pivotally stacked on the lower surface of the fixed seal plate (7) so as to close the vertical through hole (71). 8), a connecting member (9) whose lower end engages with the movable valve plate (6) and whose upper end engages with the movable seal plate (8), and is inserted into the vertical through hole (71). And a spindle (10) having a handle engaging portion (101) at its upper end and engaging the movable seal plate (8), and introduced into the casing (4) from the water introduction hole (41). Due to water pressure, the movable valve plate (6) is fixed on the fixed valve plate (5) The movable seal plate (8) is pressed against the lower surface of the fixed seal plate (7), and the movable valve plate (8) via the spindle (10), the movable seal plate (8) and the connecting member (9). Water discharge or water stop is performed by rotating 6) by a predetermined angle. The valve cartridge (3) is further interposed between the movable valve plate (6) and the movable seal plate (8), and the movable valve plate (6) is disposed on the upper surface of the fixed valve plate (5). A compression spring (11) is provided for pressing 8) against the lower surface of the fixed seal plate (7).
[0011]
The faucet body (2) has a simple internal structure as shown in FIG. 1, and can be formed by casting as in the conventional product, and the core used in this case is a simple tube. A simple structure is sufficient. Moreover, the faucet body (2) can also be manufactured by forging or cutting. In any of the manufacturing methods, the defective product generation rate is extremely low, and the cost can be reduced accordingly. Moreover, the faucet body (2) has a good appearance because the front end does not swell forward unlike the faucet body (2) of the conventional faucet shown in FIG. Since the protrusion length from the wall surface is shortened, the space can be saved.
[0012]
In this embodiment, the horizontal cylindrical portion (2B) is provided continuously from the upper end portion at the rear portion of the peripheral wall of the vertical cylindrical portion (2A) to a portion slightly below the center of the height, and has an outer diameter corresponding thereto. ing. Of course, the arrangement and outer diameter of the horizontal cylinder part (2B) with respect to the vertical cylinder part (2A) may be other than the above.
[0013]
A male screw (24) is formed from the rear end portion of the outer peripheral surface of the peripheral wall of the horizontal cylindrical portion (2B) to the middle portion of the length. One end of an elbow (not shown) for connecting a water supply pipe to the water tap (1) is connected to the male screw (24), and a pipe outlet hole and a horizontal cylinder part (2B) opened in the wall An annular cover (12) with a female screw (121) for covering the gap formed between the two is screwed.
[0014]
As shown in FIG. 1, the communication hole (23) is formed in a portion intersecting with the central axis of the horizontal cylinder part (2 B) at the rear part of the peripheral wall of the vertical cylinder part (2 A). An annular groove (25) for communication leading to the communication hole (23) is formed in a height portion corresponding to the communication hole (23) on the inner surface of the peripheral wall of the vertical cylindrical portion (2A), and the annular groove (25) An annular groove (26) for accommodating a gasket is formed at a slight interval below the groove. A female screw (27) is formed on the inner surface of the peripheral wall of the vertical cylindrical portion (2A) above the communication annular groove (25).
[0015]
An annular inward projecting portion (28) is provided at the lower end portion of the inner surface of the peripheral wall of the vertical cylindrical portion (2A). A male screw (29) is provided at the lower end portion of the inner surface of the peripheral wall of the vertical cylindrical portion (2A). A water discharge pipe (13) is connected to the lower end of the vertical cylindrical part (2A) constituting the water outlet (22). The water discharge pipe (13) is formed of a square-shaped bent pipe, and an annular flange member (14) is rotatably fitted on a portion near the upper end thereof. Insert the upper end of the water discharge pipe (13) into the lower end of the vertical cylinder (2A) until the flange member (14) contacts the lower end of the vertical cylinder (2A). The flange fixing nut (15) is screwed onto the male screw (29) of the vertical cylinder (2A), and the flange member (14) is tightened with the nut (15), so that it rotates to the lower end of the vertical cylinder (2A). It is attached movably. Between the inner surface portion of the vertical cylindrical portion (2A) between the inward projecting portion (28) and the flange member (14) and the outer surface portion of the peripheral wall of the water discharge pipe (13) facing the packing (16 ) Is interposed.
[0016]
As shown in FIGS. 1 and 2, the casing (4) of the valve cartridge (3) has an annular outward protrusion (42) at the upper end portion of the outer surface of the peripheral wall (4 A), and also protrudes outward. Male screws (43) and (44) are provided on both upper and lower sides of the portion (42). In the casing (4), the lower male screw (44) is screwed into the female screw (27) of the vertical cylindrical portion (2A) until the outward projecting portion (42) hits the upper end surface of the vertical cylindrical portion (2A). Thus, it is fixed to the vertical cylinder portion (2A). Two water introduction holes (41) of the casing (4) are provided on both the front and rear sides of the height portion corresponding to the communication hole (23) in the peripheral wall (4A) of the casing (4). As shown in FIG. 2, each water introduction hole (41) is a horizontally long one extending in the circumferential direction of the casing (4), and is communicated via the communication annular groove (25) of the vertical cylindrical portion (2A). It is made to lead to the hole (23). The casing (4) and the vertical cylinder part (2A) are sealed by an O-ring (17) disposed in the gasket accommodating annular groove (26) and in the upper end part of the vertical cylinder part (2A). The casing (4) has a bottom wall (4B) with a water passage hole (45) in addition to the peripheral wall (4A), and a step is formed at the periphery of the water passage hole (45) on the upper surface of the bottom wall (4B). (46) is provided.
[0017]
As shown in FIG. 2, the fixed valve plate (5) is provided with a hanging wall portion (52) that extends downward from its peripheral edge, and is further provided at the lower end of the hanging wall portion (52). An engaging leg (53) projects downward from the front and rear portions. Two vertical water passages (51) are provided at symmetrical positions across the center of the fixed valve plate (5), and each has a fan-shaped cross section. The fixed valve plate (5) has its hanging wall portion (52) placed on the inner side of the step (46) in the bottom wall (4B) of the casing (4) and a pair of engaging legs ( 53) is inserted into a notch (47) formed in the inner portion corresponding to these, so that the lower end of the casing (4) is non-rotatably disposed. An MY packing (18) is interposed between the fixed valve plate (5) and the inner surface of the lower end of the peripheral wall (4A) of the casing (4).
[0018]
The movable valve plate (6) is also made of ceramics and includes an engaging convex portion (62) having a hexagonal cross section protruding upward from the center portion of the upper surface. On the upper surface of the movable valve plate (6), a symmetrical position with the engagement convex portion (62) sandwiched is cut out in a fan shape when seen from the plane. A total of two vertical water passages (61) are provided so as to reach the lower surface from these notches, and each has a fan-shaped cross section.
[0019]
The fixed seal plate (7) is made of ceramics and includes an annular flange portion (72) at the upper portion of the outer peripheral surface thereof. The fixed seal plate (7) is fitted into the upper end portion of the vertical cylindrical portion (2A) via the MY packing (18), and the flange portion (72) thereof has a peripheral wall portion (19A) with a female screw (191). And a top wall (19B) with a spindle insertion hole (192), and is fixed to the vertical cylinder (2A) by being pressed from above by a lid (19) screwed onto the upper end of the casing (4). .
[0020]
The movable seal plate (8) is also made of ceramics, and has an engagement recess (81) with a square cross section at the center of the upper surface and an engagement protrusion with a hexagonal cross section protruding downward from the center of the lower surface. (82).
[0021]
The connecting member (9) includes a hexagonal cross-section engaging recess (91) into which the engaging convex portion (62) of the movable valve plate (6) is fitted at the lower end surface, and the movable seal plate (8) at the upper end surface. This is a short columnar shape having an engaging recess (92) having a hexagonal cross section into which the engaging protrusion (82) is fitted. The connecting member (9) may have a cylindrical shape in which the inner contour of the cross section is a hexagon corresponding to the engaging convex portions (82) and (62). In addition, the engagement recesses (91) and (92) of the connecting member (9) and the engagement protrusions (62) and (82) of the movable valve plate (6) and the movable seal plate (8) fitted in these are shown in FIG. It is not limited to the hexagonal cross section as shown in 1 and 2, but may of course have other cross sectional shapes. Furthermore, engagement convex portions are provided on the upper and lower ends of the connecting member (9), and engagement concave portions into which these are fitted may be provided on the upper surface of the movable valve plate (6) and the lower surface of the movable seal plate (8). It doesn't matter.
[0022]
The compression spring (11) is formed of a compression coil spring and is arranged around the connecting member (9). However, when the connecting member (9) is cylindrical, the compression spring (11) may be arranged inside the connecting member (9).
[0023]
At the lower end portion of the spindle (10), an engagement portion (102) having a quadrangular cross section that is fitted into the engagement recess (81) of the movable seal plate (8) is provided. Note that the engaging portion (102) and the engaging recess (81) of the movable seal plate (8) into which the engaging portion (102) is fitted are not limited to those having a quadrangular section as shown in FIGS. You may have. Further, an engaging convex portion may be provided on the upper surface of the movable seal plate (8), and an engaging convex portion into which the engaging convex portion is fitted may be provided at the lower end portion of the spindle (10). An annular groove (103) is provided in the upper part of the engaging part (102) of the spindle (10), and the bottom wall of the groove (103) and the vertical penetration of the fixed seal plate (7) facing the bottom wall An O-ring (20) for holding the spindle (10) vertically is interposed between the inner surface portion of the hole (71). An annular flange portion (104) is provided in the middle portion of the length of the spindle (10), and this flange portion (104) is provided on the upper surface of the fixed seal plate (7) and the top wall portion (19B) of the lid (19). So that the spindle (10) does not come out upward. The handle attachment portion (101) at the upper end of the spindle (10) is provided with a large number of teeth (101a) extending in the vertical direction and arranged in the circumferential direction.
[0024]
As the handle, a general-purpose product having an engagement hole into which the handle mounting portion (101) is fitted can be used, and is not particularly limited. Although not shown in the drawing, a stopper for restricting the rotation range of the handle between the opening position and the closing position may be provided, for example, at a required portion of the spindle (10) and the lid (19). Good.
[0025]
In the above-mentioned water faucet (1), in the closed state, the fixed valve plate (5) and the movable valve plate (6) do not overlap with each other because the vertical water passages (51) (61) do not overlap each other. It is in such a positional relationship. In addition, in the casing (4), water from the water supply pipe allows the elbow, the horizontal cylinder part (2B) of the faucet body (2), the communication hole (23) of the vertical cylinder part (2A) and the annular groove (23 ) Through the water introduction hole (41), and due to the pressure of the water and the elastic force of the compression spring (11), the movable valve plate (6) is placed on the upper surface of the fixed valve plate (5) and the movable seal plate. (8) is pressed against the lower surface of the fixed seal plate (7), so that water leakage is surely prevented. The fixed valve plate (5), the movable valve plate (6), the fixed seal plate (7), and the movable seal plate (8) are all made of ceramics, have high wear resistance, and are not easily deformed by heat. Since it does not occur, the problem of water leakage does not occur even if it is used for a long time. When the handle is rotated by a predetermined angle (about 90 °) in a predetermined direction from the closed state, the movable valve plate (6) is passed through the spindle (10), the movable seal plate (8), and the connecting member (9). ) Is rotated, whereby the vertical water passages (51) and (61) of the fixed valve plate (5) and the movable valve plate (6) overlap and communicate with each other, and the water discharge pipe (13) passes through the water outlet (22). ), The water is discharged from the plug. In order to shift from the opened state to the closed state, a handle operation opposite to the above may be performed.
[0026]
When the water tap (1) is used for supplying water to the fully automatic washing machine, the tip of the water discharge pipe (13) and the water introduction part of the fully automatic washing machine are usually connected by a hose. In this case, when water is automatically stopped at the water introduction part of the fully automatic washing machine during the water supply, the water flows backward to the water tap (1) side, but flows back to the fixed valve plate (5) and the movable valve. The pressure of water introduced into the casing (4) from the vertical water passages (51) (61) of the plate (6) is the direction in which it is pressed against the lower surface of the fixed seal plate (7) against the movable seal plate (8). Since these seal plates (7) and (8) are made of ceramics, there is no risk of both seal plates (7) and (8) being damaged, and there is a problem of water leakage from the same portion as in the prior art. Does not happen.
[0027]
It should be noted that the above-described embodiment is merely an example, and it is of course possible to implement the present invention as appropriate without departing from the gist of the present invention described in the claims.
[0028]
【The invention's effect】
The faucet according to the present invention is as described above, and since the internal structure of the faucet body is simplified, for the faucet body, a core having a simple structure corresponding thereto is used. In addition to being able to be manufactured by casting, it can be manufactured by forging or cutting, thereby reducing the incidence of defective products and reducing costs. In addition, the faucet body is composed of the vertical cylinder part and the horizontal cylinder part, and the front end does not bulge forward like the faucet body of the conventional faucet. Since the length is shortened, it is possible to save space. Moreover, in the water tap according to the present invention, the movable valve plate provided in the casing of the valve cartridge is on the upper surface of the fixed valve plate, the movable seal plate is on the lower surface of the fixed seal plate, respectively, and the water pressure or the elasticity of the compression spring is compressed. Because it is pushed by force, there is no problem of water leakage and it can be used safely for a long time. In particular, even when used for water supply to a fully automatic washing machine or the like, the seal parts of the spindle portion, that is, the movable seal plate and the fixed seal plate are caused by the backflow of water generated by water stoppage upstream of the water tap. There is no risk of damage and there is no concern about water leakage.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view of a water tap according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a valve cartridge of the water tap.
FIG. 3 is a vertical perspective view showing a conventional water faucet.
[Explanation of symbols]
(1): Faucet
(2): Water faucet body
(2A): Vertical cylinder
(2B): Horizontal cylinder
(21): Water inlet
(22): Water outlet
(23): Communication hole
(3): Valve cartridge
(4): Casing
(4A): Perimeter wall
(41): Water introduction hole
(5): Fixed valve plate
(51): Vertical water passage
(6): Movable valve plate
(61): Vertical water passage
(7): Fixed seal plate
(71): Vertical through hole
(8): Movable seal plate
(9): Connecting member
(10): Spindle
(101): Handle mounting part
(11): Compression spring

Claims (2)

It comprises a water faucet body consisting of a vertical cylinder part and a horizontal cylinder part extending back to the peripheral wall, and a valve cartridge inserted and fixed in the vertical cylinder part,
A communication hole is provided in a portion of the peripheral wall of the vertical cylindrical portion facing the horizontal cylindrical portion, a rear end portion of the horizontal cylindrical portion is a water inlet, and a lower end portion of the vertical cylindrical portion is a water outlet. ,
The valve cartridge includes a cylindrical casing having a water introduction hole communicating with the communication hole in the peripheral wall, a fixed valve plate with a vertical water passage disposed and fixed at a lower end portion of the casing, and a rotatable valve plate on the upper surface of the fixed valve plate. A movable valve plate with a vertical water passage, a fixed seal plate with a vertical through-hole disposed and fixed at the upper end of the casing, and a movable seal that is pivotally stacked on the lower surface of the fixed seal plate so as to close the vertical through-hole. A plate, a connecting member having a lower end engaged with the movable valve plate and an upper end engaged with the movable seal plate, and inserted through the vertical through-hole, and the lower end engaged with the movable seal plate and formed at the upper end. And a spindle having a handle mounting portion so that the movable valve plate is pressed against the upper surface of the fixed valve plate and the movable seal plate is pressed against the lower surface of the fixed seal plate by water pressure introduced into the casing from the water introduction hole. Together we are, spindle, movable valve plate via a movable seal plate and the connecting member is adapted to spout water or water stopping is performed by being allowed to rotated by a predetermined angle, the faucet. The valve cartridge further includes a compression spring that is interposed between the movable valve plate and the movable seal plate and presses the movable valve plate to the upper surface of the fixed valve plate and the movable seal plate to the lower surface of the fixed seal plate. Item 1. The water tap according to item 1.

Images