JP7421724B2 - Drain plug device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drain plug device, and particularly to a drain plug device installed in a washbasin having a washbowl with a drain port formed therein.

Conventionally, the washbasin of a washstand has been equipped with a drain plug to shut off the water so that water can be stored and used. As such a washstand, a washstand having a structure in which a drain plug is held in the hand and inserted into a drain port has been widely used (see Patent Document 1). Such a washbasin has a simple structure and has the advantage of low manufacturing cost.

In addition, in order to provide at a low cost a washstand that can reliably stop water from a drain that has an inclined surface around it, the applicant has proposed a wash basin that has a wash basin with a drain formed therein, and which is equipped with A drain plug is formed around the mouth that slopes toward the drain, is connected to the washbowl with a beaded chain, has an annular seal on its outer periphery, and shuts off water from the drain. and a regulating means for regulating the position of the drain plug so that the entire circumference of the seal portion contacts the inclined surface when water is shut off at the drain port. (See Patent Document 2)

Registered utility model No. 3050011 JP2012-200331A

Here, the drain plug is preferably removable from the washbasin in terms of improving cleaning performance. However, in washbasins installed in public facilities, the drain plug cannot be removed from the washbowl in order to prevent ``mischief'' to the sink and to prevent the drain plug from being stolen. It's better to be there.

FIG. 6 is a schematic perspective view showing a conventional washstand installed in a public facility, FIG. 7 is a schematic perspective sectional view of the washstand, and FIG. 8 is a drain port and drain plug of the washstand. FIG.

As shown in FIGS. 6 to 8, the washstand 50 includes a substantially cylindrical drainage body 60 having a flange 61 at the upper end. An opening on the upper end side of the drain main body 60 forms a drain port 62. Furthermore, a communication hole 63 is formed on the side of the drain body 60 to communicate with the overflow port of the washbasin 50.

The drain plug 70 includes a shaft portion 71 connected to an elevating mechanism (not shown), and a lid portion 72 that is fixed to the upper end of the shaft portion 71 and can open and close the drain port 62 as the shaft portion 71 moves up and down. are doing. Furthermore, guide vanes 73 extending in the radial direction are attached to the shaft portion 71. Further, a male threaded portion 74 is provided at the lower end portion of the shaft portion 71 .

A rib 64 is provided in the horizontal direction at a mid-height position of the drain main body 60, and a female threaded hole 65 is provided in the center of the rib 64. The female threaded hole 65 loosely fits into a portion of the shaft portion 71 above the male threaded portion 74 (shaft portion 71 can move smoothly in the axial direction), while the female threaded hole 65 fits loosely into the male threaded portion 74 of the shaft portion 71. They are designed to be loosely screwed together (the shaft portion 71 can move smoothly along the thread).

In the conventional washstand 50 shown in FIGS. 6 to 8, the drain port 62 can be opened and closed as desired by operating a lifting mechanism (not shown). In addition, when cleaning, it is easier to remove the drain plug 70 from the drain port 62, so operate a lift mechanism (not shown) to raise the drain plug 70 to the highest position, and then manually drain the water. Remove the stopper 70. Specifically, the drain plug 70 is further lifted to bring the male threaded portion 74 at the lower end of the shaft portion 71 into contact with the female threaded hole 65, and then the drain plug 70 is rotated to connect the male threaded portion 74 to the female screw hole 65. It is passed through the female screw hole 65 while being screwed into the hole 65 (see FIG. 8).

Such manual procedures are easy for workers who know the structure of the washstand 50, but are surprisingly difficult to understand for those who do not know the structure of the washstand 50. Therefore, this structure was extremely effective in preventing ``mischief'' to the washbasin and ``theft'' of the drain plug.

However, the above-described structure requires providing the rib 64 on the drain body 60, and further requires providing the female threaded hole 65 in the rib 64 with high positioning accuracy, making it somewhat difficult to manufacture.

The present invention has been made based on the above background. An object of the present invention is to provide a drain plug device that is difficult for ordinary people to remove from a drain port and that is relatively easy to manufacture.

The present invention is a drain plug device that is attached to a drain pipe having a fitting hole region or a fitting recess region in a side wall portion, and includes a shaft portion that is raised and lowered by a lifting mechanism, and a drain plug device that is fixed to the upper end of the shaft portion. and a lid part that can open and close the drain port at the upper end of the drain pipe as the shaft part moves up and down, and the shaft part is provided with an elastic projection protruding outward in the radial direction. The drain plug device is characterized in that the elastic projecting piece is fitted in the fitting hole area or the fitting recess area so as to be able to move up and down within a predetermined range.

According to the present invention, a drain plug device is realized that is difficult for ordinary people to remove from a drain port because the elastic protrusion fits into the fitting hole region or the fitting recess region. (When removing the drain plug device from the drain port, it is necessary to deform the elastic projecting piece radially inward while pulling the drain plug device out of the drain port. It is relatively easy to manufacture.

Furthermore, the elastic protrusion and the shaft portion can be integrally molded from resin. In this case, it is also possible to suppress material costs.

A pair of the elastic protrusion and the fitting hole region or the fitting recess region may be provided in a diametrical direction. That is, the present invention provides a drain plug device that is attached to a drain pipe that has a pair of fitting hole regions or fitting recess regions in opposing side wall portions, which comprises: a shaft portion that is raised and lowered by a lifting mechanism; and a shaft portion that is raised and lowered by a lifting mechanism; a lid part fixed to the upper end of the part and capable of opening and closing the drain port at the upper end of the drain pipe as the shaft part goes up and down; A pair of elastic protrusions are provided so as to protrude from each other, and the pair of elastic protrusions can be raised and lowered within a predetermined range within the pair of fitting hole regions or within the pair of fitting recess regions, respectively. This is a drain plug device, characterized in that it is fitted with a drain plug device.

A plurality of elastic protrusions and fitting hole regions or fitting recess regions may be provided discretely in the circumferential direction. That is, the present invention provides a drain plug device that is attached to a drain pipe that has a plurality of fitting hole regions or fitting recess regions discretely circumferentially in a side wall portion, the shaft portion being raised and lowered by a lifting mechanism. and a lid part fixed to the upper end of the shaft part and capable of opening and closing the drain port at the upper end of the drain pipe as the shaft part goes up and down, A plurality of elastic protrusions are provided so as to protrude radially outward at the positions, and the plurality of elastic protrusions are provided within the plurality of fitting hole regions or the plurality of fitting recess regions, respectively. This drain plug device is characterized in that it is fitted so that it can be raised and lowered within a predetermined range.

In each of the above inventions, it is preferable that the rotation of the shaft portion is restricted so that it cannot rotate more than one rotation. For example, if the fitting hole area or the fitting recess area has a shape that does not allow the elastic protrusion to go around, the elastic protrusion comes into contact with the side edge of the fitting hole area or the fitting recess area. Rotation of the shaft portion is restricted.

According to this, the worker can easily recognize that the structure is different from the conventional structure explained using FIGS. 6 to 8.

Furthermore, in this case, it is preferable that the height of the upper edge of the fitting hole region or the fitting recessed region becomes lower toward the side.

According to this, when the shaft part is rotated, the elastic protrusion is restricted by the upper edge of the fitting hole area or the fitting recess area, and the shaft part descends. This allows workers to more easily recognize that the structure is different from the conventional structure described above.

Further, at the highest position where the shaft portion is raised by the lifting mechanism, the elastic protrusion does not yet come into contact with the upper edge of the fitting hole region or the fitting recess region, and the shaft portion is lifted from this position. Furthermore, it is preferable that it can be lifted manually.

According to this, a certain degree of workability during cleaning can be ensured without removing the drain plug device.

Furthermore, in this case, it is preferable that the further manual lifting stroke is smaller than the lifting stroke of the shaft portion by the lifting mechanism.

According to this, it is possible to suppress the occurrence of a situation in which the elastic projecting piece becomes detached from the fitting hole area or the fitting recess area due to momentum during further manual lifting.

According to the present invention, a drain plug device is realized that is difficult for ordinary people to remove from a drain port because the elastic protrusion fits into the fitting hole region or the fitting recess region. (When removing the drain plug device from the drain port, it is necessary to deform the elastic projecting piece radially inward while pulling the drain plug device out of the drain port. It is relatively easy to manufacture.

FIG. 1 is a schematic vertical cross-sectional view showing a state of a drain plug device according to an embodiment of the present invention when assembled. FIG. 2 is a schematic perspective sectional view of the drain plug device of FIG. 1; FIG. 2 is a schematic longitudinal cross-sectional view showing the state of the lid of the drain plug device of FIG. 1 when it is closed. FIG. 2 is a schematic vertical cross-sectional view showing a state in which the lid of the drain plug device of FIG. 1 is opened. FIG. 2 is a schematic vertical cross-sectional view showing a state of the shaft portion of the drain plug device of FIG. 1 when it is manually raised. FIG. 1 is a schematic perspective view of a conventional washstand installed in a public facility. FIG. 7 is a schematic perspective cross-sectional view of the washbasin of FIG. 6; FIG. 7 is a schematic vertical cross-sectional view showing a drain port and a drain plug of the washstand in FIG. 6. FIG.

Next, a drain plug device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

(composition)
FIG. 1 is a schematic vertical cross-sectional view showing the assembled state of a drain plug device 20 according to an embodiment of the present invention, FIG. 2 is a schematic perspective cross-sectional view of the drain plug device 20 of FIG. 1, and FIG. 1 is a schematic vertical cross-sectional view showing a state in which the lid portion 22 of the drain plug device 20 in FIG. 1 is closed, and FIG. 4 is a schematic longitudinal sectional view showing a state in which the lid portion 22 of the drain plug device 20 in FIG. FIG. 5 is a schematic longitudinal sectional view showing a state in which the shaft portion 21 of the drain plug device 20 of FIG. 1 is manually raised.

The drain plug device 20 shown in FIGS. 1 to 5 is attached to a drain main body 10 having a pair of fitting hole regions 13 in diametrically opposed side wall portions. The drain main body 10 is mainly made of a cylindrical SUS pipe material, and a flange part 11 made of a brass forging (Cr plating) is attached to the upper end. An opening on the upper end side of the drain main body 10 forms a drain port 12. The fitting hole region 13 is adapted to communicate with an overflow opening (not shown) of the sink.

The drain plug device 20 includes a shaft portion 21 that is raised and lowered by a known lifting mechanism 30 provided near the lower end of the drain main body 10, and a shaft portion 21 that is fixed to the upper end of the shaft portion 21 and opened and closed as the shaft portion 21 moves up and down. 12 and a lid part 22 that can be opened and closed.

Further, the shaft portion 21 of this embodiment is provided with a pair of elastic protrusions 23 that are provided at diametrically opposed positions so as to protrude outward in the radial direction. The pair of elastic protrusions 23 are fitted into the pair of fitting hole regions 13 so as to be movable up and down within a predetermined range. A predetermined range in which the elastic protrusion 23 can move up and down is regulated by the upper and lower edges of the fitting hole region 13.

Further, the shaft portion 21 of this embodiment is provided with guide vanes 24 that extend in the radial direction. The guide vane 24 of this embodiment extends in a direction perpendicular to the plane in which the pair of elastic protrusions 23 extend.

Further, in this embodiment, the shaft portion 21, the elastic protrusion 23, and the guide vane 24 are integrally molded from resin. This reduces material costs.

To supplement the description of the form of the elastic protrusion 23, the elastic protrusion 23 of this embodiment includes a shoulder portion 23a that extends laterally from the shaft portion 21, and an arm portion that hangs down from the periphery of the shoulder portion 23a. 23b, and a protrusion 23c that protrudes radially outward from the lower end of the arm 23b. The shoulder portion 23a, the arm portion 23b, and the protrusion 23c all have a relatively thin thickness (dimension in the direction perpendicular to the paper surface of FIG. 1), but the shoulder portion 23a has a certain height. Its elasticity is small (almost no deformation). On the other hand, the arm portion 23b has a small thickness in the radial direction and has high elasticity (easily deformed). During assembly, the elasticity of the arm portion 23b is utilized (see FIG. 1).

Further, in this embodiment, the rotation of the shaft portion 21 is restricted so that it cannot rotate more than one rotation. Specifically, the fitting hole region 13 has a shape that does not allow the elastic protrusion 23 to go around, and when the elastic protrusion 23 comes into contact with the side edge of the fitting hole region 13, the shaft portion 21 rotates. It is becoming regulated.

Further, in this embodiment, as shown in FIGS. 1 to 5, the height of the upper edge of the fitting hole region 13 increases as it goes to the side along a smooth curve (for example, an elliptical curve). It's getting lower.

Furthermore, in this embodiment, as shown in FIG. 4, at the highest position where the shaft portion 21 is raised by the lifting mechanism 30, the elastic protrusion 23 does not yet come into contact with the upper edge of the fitting hole region 13. ing. From this position, the shaft portion 21 can be further manually lifted (see FIG. 5).

However, the manual lifting stroke (FIGS. 4 to 5) is smaller than the lifting stroke of the shaft portion 21 by the lifting mechanism 30 (FIGS. 3 to 4).

(motion)
In the drain plug device 20 of the present embodiment described above, the drain port 12 can be opened and closed as desired by raising and lowering the lid part 22 by operating the known lifting mechanism 30 (Fig. 3→Fig. 4→Figure 3→...).

For example, when removing foreign matter clogged in the drain 12, the shaft 21 can be manually lifted from the position shown in FIG. Accessibility to the mouth 12 can be improved (FIG. 4→FIG. 5).

Furthermore, during cleaning, the drain plug device 20 is further pulled out from the drain port 12 from the position shown in FIG. 5 while deforming the pair of elastic protrusions 23 radially inward using a special jig or tool. The drain plug device 20 can be removed from the drain 12.

The removal work of the drain plug device 20 is easy for workers who know the structure of washstands, but it is surprisingly difficult for those who do not know the structure of washstands. For this reason, the drain plug device 20 of this embodiment is extremely effective in preventing "mischief" to the washbasin and "theft" of the drain plug device 20.

(attachment)
When attaching the drain plug device 20 once removed to the drain port 12 again, as shown in FIG. Just push it in. Thereby, the drain plug device 20 can be attached to the drain port 12 with extremely simple work.

(effect)
According to the drain plug device 20 of the present embodiment described above, since the elastic protrusion 23 fits into the fitting hole region 13, it is difficult for the general public to remove the drain plug from the drain port 12. A device 20 is implemented. (When removing the drain plug device 20 from the drain port 12, it is necessary to pull out the drain plug device 20 from the drain port 12 while deforming the elastic projections 23 inward in the radial direction.) Manufacture is relatively simple as no ribs are required.

Moreover, according to the drain plug device 20 of this embodiment, since the shaft portion 21, the elastic protrusion 23, and the guide vane 24 are integrally molded from resin, it is possible to suppress material costs.

Furthermore, according to the drain plug device 20 of this embodiment, the rotation of the shaft portion 21 is restricted so that it cannot rotate more than once, so that it is different from the conventional structure explained using FIGS. 6 to 8. Easily recognized by workers.

In particular, according to the drain plug device 20 of this embodiment, since the height of the upper edge of the fitting hole region 13 becomes lower toward the side, when the shaft portion 21 is rotated, the elastic protrusion 23 is regulated by the upper edge of the fitting hole region 13, and the shaft portion 21 descends. Thereby, the operator can more easily recognize that the structure is different from the conventional structure explained using FIGS. 6 to 8.

Further, according to the drain plug device 20 of this embodiment, at the highest position (see FIG. 4) where the shaft portion 21 is raised by the lifting mechanism 30, the elastic protrusion 23 is still in contact with the upper edge of the fitting hole region 13. From this position, the shaft portion 21 can be further manually lifted. Thereby, a certain degree of workability during cleaning can be ensured without removing the drain plug device 20.

Furthermore, according to the drain plug device 20 of the present embodiment, the manual lifting stroke (FIG. 4→FIG. 5) is longer than the lifting stroke of the shaft portion 21 by the lifting mechanism 30 (FIG. 3→FIG. 4). is smaller. As a result, it is possible to suppress the occurrence of a situation in which the elastic protrusion 23 becomes detached from the fitting hole region 13 due to momentum during further manual lifting.

(Modified example)
In the embodiment described above, a pair of elastic protrusions and fitting hole regions were provided in the diametrical direction, but the present invention is not limited to this aspect. Only one set of the elastic projecting piece and the fitting hole region may be provided. Alternatively, three or more pairs of elastic protrusions and fitting hole regions may be provided discretely in the circumferential direction (for example, at equal intervals in the circumferential direction).

In addition, the area of the drain pipe into which the elastic protrusion fits is a fitting recess area provided in the side wall part (inner wall part) so as not to penetrate in the radial direction, instead of a fitting hole area penetrating the side wall part. There may be.

10 Drain section main body 11 Flange section 12 Drain port 13 Fitting hole area 20 Drain plug device 21 Shaft section 22 Lid section 23 Elastic projection 23a Shoulder section 23b Arm section 23c Projection 24 Guide vane 30 Lifting mechanism 50 Wash basin 60 Drain section Main body 61 Flange portion 62 Drain port 63 Communication hole 64 Rib 65 Female screw hole 70 Drain plug 71 Shaft portion 72 Lid portion 73 Guide vane 74 Male screw portion 80 Drain pipe

Claims (7)

A drain plug device attached to a drain pipe,
a drainage part main body having a fitting hole area or a fitting recess area in a side wall portion;
A shaft part that is raised and lowered by a lifting mechanism;
a lid part fixed to the upper end of the shaft part and capable of opening and closing the drain port at the upper end of the drain pipe as the shaft part goes up and down;
Equipped with
The shaft portion is provided with an elastic protrusion protruding outward in the radial direction, and the elastic protrusion can be raised and lowered within a predetermined range within the fitting hole region or the fitting recess region. is mated to
At the highest position where the shaft part is raised by the lifting mechanism, the elastic protrusion does not yet come into contact with the upper edge of the fitting hole area or the fitting recess area, and from this position the shaft part is further moved manually. can be lifted with
A drain plug device characterized by: The shaft portion is provided with a pair of elastic protrusions that protrude outward in the radial direction at diametrically opposed positions, and the pair of elastic protrusions engage the pair of fitting holes. The drain plug device according to claim 1, wherein the drain plug device is fitted within the region or into the pair of fitting recess regions so as to be movable up and down within a predetermined range. The shaft portion is provided with a plurality of elastic protrusions that protrude outward in the radial direction at discrete positions in the circumferential direction, and the plurality of elastic protrusions are provided with the plurality of the fitting pieces. The drain plug device according to claim 1, wherein the drain plug device is fitted into the hole region or into the plurality of fitting recess regions so as to be movable up and down within a predetermined range. 4. The drain plug device according to claim 1, wherein the shaft portion is restricted from rotating more than once. The drain plug device according to claim 4, wherein the upper edge of the fitting hole region or the fitting recess region has a height that becomes lower toward the side. 6. The drain plug device according to claim 1 , wherein the further manual lifting stroke is smaller than the lifting stroke of the shaft portion by the lifting mechanism. A drain plug device according to any one of claims 1 to 6 ,
a bowl portion in which the drain plug device can be installed;
A washbasin characterized by being equipped with.

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