JPS6221935A - Drain mount - 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 (a) Field of the Invention The present invention relates to a valve for sewage piping equipment, and specifically relates to a drain fitting for selectively opening and closing drain piping of bathtubs, wash basins, etc.

(b) Background of the Invention The lids of many sewer pipe fittings are difficult to grasp and lift to open the drain. Therefore, opening the drain becomes mechanically complicated. In some cases, such a device is required to remove the lid from the fixture. While these common fittings are self-contained, they require a spring or resilient sleeve to push the lid into the open position. Therefore, a reliable launch mechanism is required to hold the lid in the closed position against the force of the spring.

Drain fittings with lids that have hand-lifted grips are of relatively simple construction, low cost, and long life. This type of attachment does not need to be supported with your hands.
A means of holding the lid in the open position is required. Such means must not complicate the mechanism and must have a long life and reliability in order to obtain the full benefits of this type of attachment. It would also be advantageous if the lid could be automatically actuated to lift the lid to the open position without requiring rotation or other movement of the lid to hold the drain fitting in the open position.

It can be opened by grabbing the lid and lifting it up.
Traditional drain fittings that require a rotating latch mechanism are
Friction is used to hold the lid in the open position. In this type of prior art, the lid is attached to a sleeve that is disposed within the fixture coaxially with a vertical stem and is slidable along the stem, allowing the lid to move between open and closed positions. There is.

An elastic splitting ring in the coaxial groove of the stem, in radial compression, exerts pressure on the inner surface of the sleeve. This increases the frictional resistance to movement of the sleeve and lid along the system,
They are intended to remain in place until they are manually removed from that position.

The friction increasing means described above wears out quickly and becomes less effective for the intended purpose. It does not provide a firm retention effect in the open position and always increases the operator's effort when closing the lid. A long-life fitting that securely holds the lid in the open position without increasing such operator effort would be greatly advantageous.

The present invention seeks to solve the above-mentioned problems.

(C) Summary of the Invention The present invention is characterized in that the drain fitting includes a cylindrical body that engages with the drain opening to define a drain flow path, and a cylindrical body that is attached to the cylindrical body and extends across the flow path. There is an extending flow transmitting spider, a stem fixed to the spider and extending along an axis of the cylindrical body, and first and second coaxial members comprising a sleeve coaxially disposed on the stem and slidable along the stem. . A lid attached to the sleeve is movable with the sleeve between open and closed positions.

In the closed position, the lid prevents flow from entering the drain channel;
In the open position, the lid is spaced from the cylindrical body and directs flow into the drain channel. The first coaxial member has a radial hole extending toward the second coaxial member, and the second coaxial member has a cavity facing the first coaxial member. The attachment further includes a pawl member disposed at least partially within the radial bore, movable relative to the bore, and a member pushing the pawl member outwardly from the bore and onto the second coaxial member. The recess is suitably positioned in the second coaxial member to receive a portion of the pawl member when the lid and sleeve are in the open position.

According to another feature of the invention, the drain fitting is opened by grasping and manually lifting the lid and has a cylindrical body defining a drain passageway and a spider member extending into the passageway. A stem extends along the axis of the cylindrical body, is fixed to the spider member at one end and has an enlarged portion at the other end, and a tubular sleeve is disposed coaxially with and slidable along the stem. The lid extends radially from the sleeve and is movable therewith between a closed position and an open position. The closed position prevents flow to the drain channel, and the open position allows flow into the drain channel. The fitting has means defining a chamber around the enlarged portion of the stem such that when the lid reaches the open position, the enlarged portion abuts the surface of the chamber to prevent further movement of the sleeve and lid. The room is configured so that IE can be used. The attachment further includes a pawl member that electrically prevents movement of the lid and sleeve into the spider member when the lid is in the open position.

The drain fitting of the present invention is of a type in which the lid can be grasped and lifted by hand to open the drain, and is simple, durable, and easy to handle. When the lid is lifted to the open position, the pawl engages automatically and requires no further action by the operator. When the lid is not in the open position, the resistance to movement of the lid is not significantly increased.

2) Detailed Description of the Preferred Embodiment In FIG.
It is arranged so that it can be attached to the drain opening 12 of.

In Figures 2-3, the cylindrical body 14 of the fixture 1 forms a drain passage 16 and has a flange 17 at its upper end. Cylindrical body 1
4 engages the drain opening 12, in this example the outer thread 18
can be engaged with an internal thread 19 in a drain pipe elbow 21 under a foundation 13 such as a bathtub or wash basin. An annular elastic gasket 22 is pressed against the rim of the drain opening 16 by the flange 17 to prevent leakage when the drain fitting 11 is installed.

To support the movable lid 23, a spider member 2.1 traverses the drain channel 16 at the base of the cylindrical body 14;
An internally threaded socket 26 is located on the axis of the cylindrical body. A threaded lower end of rod-like stem 27 engages within socket 26 and extends upwardly from the socket in alignment with the axis of cylindrical body 14 . The radial enlargement 28 at the upper end of the stem 27 rests on the cylindrical body 14;
Its purpose will be explained later.

The movable lid 23 assembly includes a sleeve member 29 coaxial with the stem 27 and movable along the stem. In this embodiment, the sleeve 29 has an integral lid member 31 at its upper end, the diameter of which is larger than the diameter of the drain passage 16. An annular rubber skirt 32 is near the M member 31 at the upper end of the sleeve 29 and is coaxial with the sleeve and lid member to close the drain passageway 16 when the lid 23 is lowered along stem 27 to its lowest position. In the closed position, the pressure and weight of the fluid above the fitting 11 forces the rim of the skirt 32 against the flange 17 to provide a seal.

To facilitate gripping the lid 23, a hollow knob 33 is located on the lid member 31 and is engaged with the lid member by a screw 34. knob 3
The upper end of the stem 27 extends into the inner chamber 36 of the lid 31 through a channel 37 of the lid 31. The channel 37 has a smaller diameter than the upper enlarged portion 28 of the stem 27. Upward movement of the lid 23 along the stem 27 is limited by the contact of the enlarged portion 28 against the base of the chamber 36, defining the open position of the drain flow path.

The pawl means 38 stops the lid 23 from moving downward from the open position, allowing the drain fitting 11 to be opened without the use of hands. In the pawl means 38 of the present invention, the helical compression spring 3
9 and a spherical pawl member 41 are within the radial bore 42 of the stem 27. The spring 39, in its compressed state, pushes the pawl member 41 outwardly towards the inner surface of the sleeve 29.

A coaxial groove 43 on the inner surface of the sleeve 29 defines a recess into which the pawl member 41 enters when the lid 23 is in the open position. For the lid 23 to move downwardly from the open position, the pawl member 41 must emerge from the groove 43, which requires compression of the spring 39.

The spring force prevents movement and the lid 23 remains in the open position unless manually lowered. The pawl means 38 does not obstruct the movement of the lid 23 except in the open position.

Although the lid 23 is not flipped over to hold it in the open position, in the embodiments described above the lid can be rotated relative to the stem 27. In Figure 4, to stop the rotation if desired, the stem 2
A longitudinal slot 44 is provided along 7α, and the sleeve 29
A screw 46 may be provided at α. The screw 46 extends slightly inwardly from the inner surface of the sleeve 29α within the slot. If the rotation of the lid 230 relative to the stem 27 is prevented, the rotation of the lid will prevent the stem from coming into contact with or into the socket 26, making it easier to assemble and disassemble the attachment 11, and the lid and stem will become a unit. It can be installed and removed as

In Figures 5 and 6, a modification of the drain fitting 11b is possible in which the spring 395 and ball 41b of the pawl means 38b are supported by the sleeve 29b rather than by the stem 27b.

In FIGS. 5 and 6, the cylindrical body 14b has a spider 24b with a threaded socket 26b, which is similar to its counterpart in the previous embodiment and is attached to the drain opening 16b in a similar manner. I can get hit. Similarly, stem 27b extends upward from socket 26b along the axis of cylindrical body 14b;
At the upper end there is a radial enlargement 28b.

In this embodiment, the lid member 31b and the grippable horn 33b are formed as an integral member, and the stem 271) and the sleeve 29h coaxial therewith can be removed from the lid member. sleeve 29h
is the threaded annular portion 48 of the lid member 31b.
It is fixed at b. Portion 48 extends within a threaded opening 49 at the top of the IJ-spout. The inner end of the rubber skirt 32b is sandwiched between the lower surface of the lid member 31h and the upper end of the sleeve 29b.

The chamber 3G5 within the portion 48 of the lid member 31A is
The stem 27b extends into the cylindrical shape of the lid member and is adapted to receive the upper end of the stem 27b, which has an enlarged portion 28b. The drain fitting 11b grips the knob 33b and connects the lid member 31b and the sleeve 29b.
can be opened by pulling upward, and in the open position the sleeve 29b stops moving against the enlarged portion 2875 of the stem.

At the bottom of the stem 27b there is a flat side wall 51.

Rotation of the sleeve 29b relative to the stem 27b is stopped by a screw 52 that engages the inner wall of the sleeve. The flat head of the screw 52 abuts the side wall 51.

Pawl means 38b for holding drain fitting 11b in the open position
The threaded spring flange 53 of the sleeve 29b engages within the radial bore 54 of the sleeve 29b. ...The helical compression spring 3L6 inside the Ujifugu 53 connects the ball 41b to the stem 27b.
Press it against the flat side wall 51 of.

A recess 56 in the stem 27b at the upper end of the side '451 is in a position to receive the ball 41A when the lid member 31b and sleeve 29b are moved to the open position.

The downward movement of the lid member 31b and the skirt 32b from the open position is caused by the movement of the ball 4 against the force of the spring 39b, as described above.
Since 1b needs to come out of the recess 56, it is met with resistance. Preferably, the outer end of the spring housing 53 is provided with a screwdriver slot 57 or the like. This is because this allows the degree of compression of spring 39b to be adjusted, thereby adjusting the amount of force required to move lid member 31 downward from the open position.

Although the invention has been described with respect to particular embodiments, many structural modifications are possible and the embodiments are not intended to limit the scope of the invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an actual example of a drain fitting according to the present invention applied to sewage piping equipment. FIG. 2 is an exploded view of the attachment of FIG. 1, showing the contents of the attachment. FIG. 3 is an axial sectional view of the previous drain attachment, and FIG. 4 is an exploded view of a partially changed structure of the drain attachment. FIG. 5 is an exploded perspective view of the fin/attachment of another actual oval example. FIG. 6 is an axial cross-sectional view of the implementation row of FIG. 5; 11...Drain attachment 12...Opening 13...
Foundation 14... Cylindrical body 17... Flange 18... Screw 22... Gasket 24.
... Spider member 26 ... Socket 27 ...
・Stem (5 people)

Claims (11)

[Claims] (1) a cylindrical body that engages the drain opening to define a drain passage; a flow-transmitting spider that is secured to the cylindrical body and transverse to the drain passage; and a flow-transmitting spider that is secured to the spider and extends along the axis of the cylindrical body; first and second coaxial members comprising an extending stem and a sleeve disposed coaxially with the stem for sliding therealong; and an openable and closable lid secured to the sleeve, wherein in the closed position the lid directs the drain flow. the first coaxial member has a radial aperture extending toward the second coaxial member, the first coaxial member having a radial aperture extending toward the second coaxial member, and the second a coaxial member having a recess facing the first coaxial member, and further comprising a pawl member disposed at least partially within the radial hole and movable thereto; and a recess on the second coaxial member is positioned to receive a portion of the pawl member when the lid and sleeve are in the open position. (2) The stem extends within the axial flow path within the sleeve and has a protrusion that is too large to fit into the flow path, and the position of the protrusion on the stem is such that when the pawl member is in the recess, A drain fitting according to claim 1, wherein the drain fitting stops movement of the lid. (3) The pawl member is spherical and the means for pushing the pawl member outwardly is a helical spring placed in the radial bore in a compressed state and having an end acting against the spherical pawl member. Drain fittings described in section. (4) The drain fitting according to claim 1, which has means for stopping rotation of the lid and sleeve relative to the stem and cylindrical body. (5) The longitudinal slot of the stem extends along at least a portion of the surface of the stem, and the means for stopping rotation of the lid and sleeve includes a pin supported by the sleeve extending into the slot. Drain fittings listed in . (6) having an element supported on the sleeve such that the flat surface of the stem extends along at least a portion of the stem and the means for stopping rotation of the lid and sleeve has a flat surface contacting the surface of the stem; A drain fitting according to claim 4. 7. The drain fitting of claim 1, wherein the radial hole is in the stem and the recess is in the sleeve. (8) The drain fitting of claim 7, wherein the recess is a circular groove in the inner surface of the coaxial sleeve. 9. The drain fitting of claim 1, wherein the radial hole is in the sleeve and the recess is in the stem. (10) A drain fitting according to claim 9, comprising means for adjusting the degree of compression of the helical spring within the radial bore. (11) A drain fitting that can be lifted by grasping the lid by hand, which includes a cylindrical body forming a drain flow path and having a spider member extending into the drain flow path, and a spider member extending along the axis of the cylindrical body. a stem having an end fixed to the stem and an enlarged portion at the other end; a tubular sleeve coaxially disposed within the stem and sliding therealong; and a tubular sleeve extending radially from the sleeve between a closed position and an open position. It has a movable lid with the sleeve, which in the closed position prevents flow into the drain channel and in the open position allows flow into the drain channel, and further includes a lid that is movable around the enlarged portion of the stem. means defining a chamber, the chamber being configured to stop movement of the sleeve and the lid when the lid is in the open position, with the enlarged portion abutting a surface of the chamber, and the lid being in the open position; A drain fitting having a pawl member that restrains movement of the lid and sleeve toward the spider member when