JPS5847841A - Drain instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to drainage appliances, and more particularly to pop-out drainage appliances mounted in the same plane, ie, drainage pulp.

It has traditionally been the practice to provide sealable drainage pulp within large plumbing installations such as bathtubs, Roman baths, etc. Due to the size of these fittings, it is not practical to install a self-sealing drain with a remote-controlled 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 sealable drain pulp that does not require a remotely operated actuator is a pop-up drain device, such as that shown in US Pat. No. 4,144,599. However, because the drain is often installed in the center of the bottom of the bathtub, and because the bathtub user sits or relaxes in the middle of the bathtub, pop-out drains are often used in Roman baths. This was not preferable for large piping installations. Conventional pop-up drain devices have a structure in which the drain device sealing cover is located at a position somewhat higher than the surface of the bathtub to which the drain device is attached. As a result, the drain cover obstructs the user in the bathtub and may even injure the user. Additionally, pop-up drains often dislodged from their sealed position with a slight push on one side of the drain cover.

That is, conventional pop-out drain devices have had the disadvantage that the pop-out drain device may come off and open when the user sits on or near the pop-out drain device or relaxes.

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 device according to the invention provides a releasable drain device that, when the drain device sealing cover is in its sealed position,
The cover is installed on the same plane as the bottom surface of the bathtub to which the drainage device is attached.

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 drain device is
It is retracted so as to come into contact with the flange of the main body of the drain device under the pressure of the drain device cover provided thereon. In the sealed position, the upper extension of the drain fixture cover is generally 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 hollow cylinder shape, and a hole extends through the interior in the axial direction. The flanges 12 extend radially outward from the upper extension of the drain body 11 and are arranged in a pair of diametrically opposed flanges for securing the drain body within a drain opening of a bathtub, washbasin, etc. It has a countersunk hole. The collar 14 extends radially outward into the hole of the drain device body from the lower end 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 holes 18 are located in the central web portion 1.
It extends through 7 and in axial alignment with the bore in the drainage device 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 includes a column 19 having a substantially rectangular parallelepiped shape. 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. On one vertical surface 25 of the rectangular parallelepiped support 19,
A laterally extending slot 21 is provided. The same vertical surface is provided with an angled cam surface 22 extending upwardly and diagonally inward from the upper end of the slot 21 as shown in FIGS. Vertical surface 25 is also provided with a projection 26 extending radially outwardly from just above the upper extension of cam surface 22 .

Vertical surface 3 opposite vertical surface 25 of rectangular parallelepiped support 30
0 is provided with a radially extending hole 23, as shown in FIG. Mounted within the bore 23 is a helical compression spring 24 and a flat head biasing member 4o 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 from vertical surface 30 only. A central hole 17 is provided at the top of the rectangular parallelepiped support 19. 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 generally disc-shaped, rigid drain cover 31.

A cylindrical member 33 extends downward from the drain cover and coaxially with the axis thereof. As shown in Figure 4,
The cylindrical member 33 is provided with a reduced diameter portion 35, and the outer peripheral edge of the annular) □ sealing gasket 32 is connected to the cover 31.
The gasket is elastically secured within the reduced diameter portion 35 in such a way that it is inclined slightly downwardly relative to the gasket.

The outer diameter of the gasket 32 is smaller than the diameter of the hole in the drainage device body and larger than the diameter of the collar 14 of the drainage device body. The outer periphery of the gasket 32 is adapted to abut sealingly on the collar 14 to prevent any water from flowing out through the drainage holes.

Referring to FIG. 4, the cylindrical member 33 includes a hollow hole 34 extending in the axial direction and adapted to receive the rectangular parallelepiped support column 19. As shown in FIG. Vertical surface 25 to vertical surface 30
The width of the strut 19 up to the flange 29 is smaller than the diameter of the hole 34, and the tubular member 33 is arranged parallel to the strut 19 and radially offset therefrom. The member 40 swings or pivots using the spring 24 in the hole 23 as a fulcrum.
It should be noted that the bore 34, which is biased against the spring force of the bore 34, also includes a groove 38 extending parallel to its axis and slidably receiving the projection 26. By engaging the protrusion 26 in the groove 38, the 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 this pin 36 extends along the groove of the hole 34. A latch bin 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, so that the gasket 32 is pressed against the collar 1 of the drain device body.
It is far removed from 4. As shown in Figure 4,
In this form, a free flow path is formed through the gap defined by the gasket 32 and the collar 14.

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. When the cover is pushed down, the latch pin 36 rests on the cam surface 22, which causes the tubular member 3
3 is slightly swung about the collar 29 and the member 4
0 into the hole 23. The cover 31 presses a gasket 32 against the flange 14 within the drainage device body, sealing 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, i.e. release it from the depressed position shown in FIG.
Push down again along the radius parallel to 9. This action forces member 40 into hole 23 and releases latch pin 36 from slot 21. The expanding force of spring 28 then biases the cover upwardly, opening the pulp 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 person using the bathtub sits or relaxes directly in the area where the drainage device of the present invention is installed, the person will not spread the wound or become uncomfortable.

Furthermore, the coplanarity of the cover's location minimizes the possibility of accidental opening of the drainage pulp due to weight being placed on the cover 31.

[Brief explanation of the drawing]

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 body 12: 7 lunge 14: Tsuba
19: Post 21: Detent slot 22: 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 body having a flow passage passing through the interior and a strut extending axially through the flow passage; slidably around the periphery thereof and with a gap radially spaced therefrom. a drain device sealing cover provided on a cylindrical portion having a central passage for receiving and receiving the support column, the drain device sealing cover being movable from a first upper position to a second lower position; the drainage pulp, further comprising an annular collar extending radially inwardly within the flow path; the drainage device sealing cover extending upwardly of the drainage device body when in the volume sealing the flow path; (2) In the drainage pulp according to claim 1, the drainage pulp extends downward from the drainage device main body, and A drainage pulp further comprising a plurality of support arms converging in the axial direction. (4) The drainage pulp according to claim 1, further comprising: a means for supporting the struts; (4) an upper extension of the drainage apparatus body; (5) The drainage pulp according to claim 1, wherein the drainage device sealing cover is sealed with the flange. A drainage pulp comprising an annular gas nut that is brought into contact with the drainage pulp. (6) In the drainage pulp according to claim 1, the collar is adjacent to the upper end of the support arm and connected to the drainage device main body. Drainage pulp placed at the lower end of the