JPS6365780B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to drain devices, and more particularly to a pop-out drain device, ie, a drain valve, that is mounted in the same plane.

It has traditionally been the practice to provide sealable drain valves within large piping installations such as bathtubs, Roman baths, etc. Due to the size of these fittings, it is not possible to install self-sealing drain fittings that have a remotely operated actuator linked to the drain itself via a lever or chain arrangement located below the tub. It was considered difficult. The most popular form of a sealable drain valve that does not require a remote actuator is a pop-out drain device, such as that shown in U.S. Pat. No. 4,144,599. However, because the drain is often installed in the center of the bottom of the bathtub, and because this is where the bathtub user sits or relaxes, the pop-up drain is not as effective as in a Roman bath. This was not suitable for large piping installations. Conventional pop-out drainage equipment has a drainage equipment sealing cover,
It had a structure so that it was located at a position somewhat higher than the surface of the bathtub to which the drainage equipment was attached. As a result, the drain cover obstructs the user in the bathtub and may even injure the user. Additionally, pop-up drains often were released from their sealed position with a slight push on one side of the drain cover. That is,
Conventional pop-up drains have had the disadvantage that the user may sit or relax on or near the pop-out drain, causing the device to dislodge and open.

TECHNICAL FIELD The present invention relates to a pop-out draining device for use in large bathtubs or similar facilities so as not to interfere with users of the bathtub.
More particularly, the releasable drain appliance according to the invention is such that, when the drain appliance sealing cover is in its sealed position, the cover is placed flush with the bottom surface of the bathtub to which the drain appliance is attached. ing.

The present invention comprises a generally cylindrical drainage device body having a drainage hole therethrough and a flange extending radially outwardly from an upper extension thereof. An inner flange extends radially inwardly into the drain hole from the lower end of the drain device body.

A number of support arms extend downwardly from the lower end surface of the collar and converge to connect with an axially disposed web portion. A threaded hole is axially disposed in the web portion, and the pop-up drain column is secured within the threaded hole. The sealing gasket of the pop-out type drain device is adapted to come into contact with the flange of the drain device main body under the pressure of the drain device cover provided thereon. In the sealed position, the upper extension of the drain fixture cover is substantially flush with the flange extending from the drain fixture.

Drainage equipment according to the present invention will be described in detail below based on the drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, there is shown a preferred embodiment of a drainage device according to the invention having a drainage device body 11 . The drainage device main body 11 has a substantially cylindrical shape, and a hole extends through the interior thereof in the axial direction. The flange 12 is connected to the drainage device main body 11
Extending radially outward from the upper extension and having a pair of diametrically opposed countersunk holes for securing the drain device body within a drain opening of a bathtub, washbasin, etc. . The collar 14 extends radially inward from the lower end of the drain device body into the hole of the drain device body.

A number of support arms 16 extend diagonally downward from the lower end surface of the collar 14 and converge to connect to a central web portion 17. The screw hole 18 is
It extends through the central web portion 17 and in axial alignment with the bore in the drain body. Although four support arms are employed in the preferred embodiment, the number of support arms is not critical.

The drainage device according to the present invention has a substantially rectangular support column 1.
Contains 9. The post 19 is provided with a lower threaded end 20 adapted to be secured within the threaded hole 18 of the drainage device body. Rectangular parallelepiped support 19
One vertical surface 25 of is provided with a laterally extending slot 21. In the same vertical surface there are slots 21 as shown in FIGS. 1 and 2.
An angled cam surface 22 is provided extending upwardly and diagonally inwardly from the upper end of the cam. vertical surface 2
5 is also provided with a projection 26 extending radially outwardly from just above the upper extension of the cam surface 22.

The vertical surface 30 of the rectangular parallelepiped column 30, opposite the vertical surface 25, is provided with a radially extending hole 23, as shown in FIG. Hole 23
Mounted within the helical compression spring 24 is a flat head biasing member 40 having a shank 41 extending inwardly through the interior of the spring 24. Spring 24 biases member 40 radially outward for reasons detailed below. A collar 25 is provided from the upper end of the vertical surface 30. As shown in FIGS. 1, 3 and 4, collar 29 extends laterally outwardly only from vertical surface 30. As shown in FIGS. Rectangular parallelepiped support 19
A central hole 17 is provided at the top. A helical compression spring 28 is installed in the hole 27 and extends upward from the rectangular parallelepiped support.

The drain valve according to the invention further includes a rigid, generally disc-shaped drain cover 31.
A cylindrical member 33 extends downward from the drain cover and coaxially with its axis. As shown in FIG. 4, the cylindrical member 33 has a reduced diameter portion 3.
5 is provided, and an annular sealing gasket 3
The gasket is elastically fixed in the reduced diameter portion 35 in such a way that the outer peripheral edge of the gasket 2 is slightly downwardly inclined with respect to the cover 31. The outer diameter of the gasket 32 is smaller than the diameter of the hole in the drain device body and larger than the diameter of the collar 14 of the drain device body. The outer periphery of the gasket 32 is sealed with a collar 1 to prevent any water from flowing out through the drainage hole.
4 so as to come into contact with it.

Referring to FIG. 4, the tubular member 33 includes a hollow hole 34 extending in the axial direction and adapted to receive the rectangular parallelepiped column 19. As shown in FIG. The width of strut 19 from vertical surface 25 to vertical surface 30 is less than the diameter of hole 34, and tubular member 33 is disposed parallel to strut 19 and radially offset therefrom. However, it should be noted that the drain cover 31 swings or pivots about the collar 29 and the member 40 is biased against the spring force of the spring 24 in the hole 23. The hole 34 also includes a groove 38 extending parallel to its axis and slidably receiving the protrusion 26. By engaging the protrusion 26 in the groove 38, the support column 19 and the cover 19 are prevented from rotating relative to each other.

A latch pin 36 is provided at the lower end of the tubular member 33 and extends along the groove of the hole 34. A latch pin 36 is disposed adjacent the cam surface 22 and is adapted to be retained in the detent slot 21.

The cover 31 is biased upward by the compression of the compression spring 28, and the gasket 32 is therefore largely separated from the collar 14 of the drain device body. As shown in FIG. 4, in this embodiment, a free flow path is formed through the gap defined by the gasket 32 and the collar 14.

In order to close the drain valve and stop the flow of fluid through the hole, it is manually biased downward by pressing the portion directly above the cylindrical member 33 or the portion of the cover along the radius opposite to the collar 29. let When the cover is depressed, latch pin 36 rides on cam surface 22, which causes tubular member 33 to swing slightly about collar 29 and bias member 40 into hole 23. The cover 31 presses the gasket 32 against the collar 14 within the body of the drain device and seals against it. Any pressure of liquid concentrated on the drainage device merely increases the sealing action of the gasket 32.

To close the drain valve, ie release it from the depressed position shown in FIG. 3, the portion of the cover 31 along the radius parallel to the collar 29 is depressed again. This action forces member 40 into hole 23 and latch pin 36 into slot 2.
Release from 1. The expansion force of spring 28 then biases the cover upwardly, opening the valve and allowing fluid to flow therethrough. Upward movement of the cover is limited by the upward extension of the cam surface 22.

Referring to FIG. 3, it is noted that in the depressed, sealed position, the cover 31 is substantially flush with the bottom surface of the bathtub to which the flange 12 and drainage fixture are attached. Therefore, even if a bathtub user sits or relaxes directly in the area where the drainage device of the present invention is installed, he or she will not spread the wound or feel uncomfortable. Additionally, the coplanarity of the cover's location minimizes the possibility of accidental opening of the drain valve due to weight being placed on the cover 31.

[Brief explanation of drawings]

FIG. 1 is an exploded view of a drainage device according to the present invention. FIG. 2 is an enlarged horizontal cross-sectional view of the drainage apparatus strut assembly. FIG. 3 is a longitudinal sectional view of the drainage device according to the invention, shown in its sealed position. FIG. 4 is an enlarged longitudinal sectional view of the drainage device according to the present invention. 11: Drainer main body, 12: Flange, 14:
Tsuba, 19: Post, 21: Detent slot, 2
2: Cam surface, 31: Drainage device cover, 32: Gasket, 33: Cylindrical member, 36: Latch pin,
40: Biasing member.

Claims (1)

[Scope of Claims] 1. A drainage device main body having a flow passage passing through the interior and a strut extending axially through the flow passage; the above-mentioned drainage apparatus being slidable around the periphery thereof and with a gap radially spaced therefrom; A drain valve comprising: a drain sealing cover disposed on a cylindrical portion having a central passage for receiving a post, the cover movable from a first upper position to a second lower position; further comprising an annular collar extending radially inwardly within the flow path; the drainage device sealing cover abuts on the collar when in a second position to seal the flow path; A drain valve, wherein an upper surface of the drain sealing cover extends substantially coplanar with an upper extension of the drain body when in its second position. 2. The drain valve according to claim 1, further comprising a number of support arms extending downward from the drain device body and converging in the axial direction thereof. 3. The drain valve according to claim 2, further comprising a central web portion connected to the lower end of the support arm, the web portion comprising means for supporting the strut. Drain valve. 4. The drain valve according to claim 1, further comprising a flange extending radially outward from the upper extension of the drain device body. 5. The drain valve according to claim 1, wherein the drain device sealing cover includes an annular gasket configured to come into contact with the collar in a sealed state. 6. The drain valve according to claim 1, wherein the collar is disposed at the lower end of the drain device body adjacent to the upper end of the support arm.