JPS6329008Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a water faucet, in particular, the main body includes an inlet, an outlet, and a valve section provided between these two ports.
The present invention relates to a faucet in which a flow path between a valve portion and an outlet is formed in an upwardly extending substantially U-shape.

(Prior art) In this type of faucet, the water in the secondary flow path below the valve part does not drain out, and the water remains accumulated in the flow path. In an attempt to solve this problem, there were problems such as the valve part freezing and making it impossible to open the valve part, or even if the valve part was opened, water did not discharge immediately from the outlet. An application in which a drain plug is provided in the flow path has already been filed.

[Utility Application No. 57-10915 (Utility Application No. 58-115569)] However, in the above-mentioned Utility Application No. 57-10915, the water drain valve is usually left open via a spring, and the water is turned off. When using the tap, the drain valve is automatically closed against a spring by the pressure of flowing hot water, and after use, the spring opens the drain valve again as the pressure decreases due to the hot water, automatically draining the remaining water. Therefore, when discharging a small amount of hot water that does not increase the internal pressure on the secondary side of the faucet, the drain valve may not close completely and water may leak from the faucet. .

Furthermore, there are many parts, and assembly is troublesome.

(Problem to be solved by the invention) The problem to be solved by the invention is to replace the automatic opening/closing type drain valve, whose reliability of closing depends on the amount of water discharged, with a structure that can be opened and closed reliably. This manual drain valve has a structure that allows water to be drained even when it is attached to the drain hole without completely removing the stopper from the drain hole. It is to be.

(Means for Solving the Problems) The technical measures taken by the present invention to solve the above problems are as follows:
A drain plug is provided in the wall and includes a drain hole having a threaded portion on the inner circumferential surface and a plug body screwed into the drain hole, and the plug body is formed in a cylindrical shape with an opening at its tip. A threaded part is provided on the outer peripheral surface with an appropriate width left in the middle part in the axial direction, and a threaded part that is screwed into the threaded part of the drain hole is provided at the front and rear of the part, and a hole is bored between the front and back threaded parts to communicate with the internal space; It consists of a knob-shaped head integrally provided at the base end of the threaded rod.

(Function) According to the above-mentioned technical means of the present invention, when the plug is loosened and the rear threaded part is removed from the threaded part of the drain hole, the front threaded part is connected to the threaded part of the drain hole. Even in the stuck state, residual water in the secondary flow path is smoothly discharged through the internal space of the threaded portion of the plug body and the hole between the front and rear threaded portions that communicate with this space.

(Example) An example of implementing the present invention will be described below based on the drawings.

This embodiment includes both the one shown in FIGS. 1 to 3 (hereinafter referred to as the first embodiment) and the one shown in FIG. 4 (hereinafter referred to as the second embodiment). a fixed plate 2 having a through hole 1 for mixed water; and an operating lever 3 provided in sliding contact with the upper surface of the fixed plate 2.
The valve part a is constituted by a movable plate 4 that slides on the fixed plate 2 by the operation to adjust the communication between the hot water and water holes and the mixed water hole 1 and the opening area ratio of the hot water and water holes. The fixed plate 2 and the movable plate 4 are housed in a cartridge case 5 and arranged in a main body 6.

In the first embodiment, the main body 6 is provided with a valve chamber 7 in the upper part for mounting the cartridge case 5, and a hot water chamber 8, a water chamber 9, and a discharge chamber 10 in the lower part.

The discharge chamber 10 is formed in the front half of the main body 6 and has an opening 11 at its lower front surface.The hot water chamber 8 and the water chamber 9 are respectively formed from the back to the lower part of the discharge chamber 10. The inlet 12 extends symmetrically from side to side and has an inlet 12 on the lower surface.

The hot water chamber 8 and the water chamber 9 are respectively connected to the hot water and water holes in the fixed plate 2 in the cartridge case 5 attached to the valve chamber 7, and the discharge chamber 10 is connected to the hot water and water holes in the fixed plate 2, respectively. It communicates with hole 1.

The main body 6 also has a rotary part 13 rotatably fitted on its outer peripheral surface, and the rotary part 13 includes a step part 14 provided at the lower part of the main body 6 and a cover 15 screwed onto the upper part of the main body 6. The opening 1 of the discharge chamber 10 is between the inner peripheral surface and the outer peripheral surface of the main body 6.
1 are sealed by seal members 16 at the top and bottom.

The rotary part 13 extends obliquely upward from its lower circumferential surface, and is integrally provided with a cylindrical discharge port 18 having an outlet 17 at its tip.

The rotation angle of the rotating member 13 is limited within a range of about 90 degrees, and the discharge port 18 is provided so as to always communicate with the discharge chamber 10 within this rotation range.

Therefore, in this embodiment, the discharge chamber 10 and the discharge port 18 form a secondary flow path 19 extending upward from the valve portion a to the outlet 17 and having a substantially U-shape.

A drain plug b is provided in the secondary flow path 19 at its lowest position, that is, at the lower surface of the base end of the discharge port 18.

In the second embodiment, no hot water chamber or water chamber is provided below the valve chamber 7 to which the cartridge case 5 is mounted, and the hot water and water passages of the fixing plate 2 inside the cartridge case 5 are directly connected to each other. A hot water supply and water supply communication pipe 20 is connected to the bottom wall 21 of the valve chamber 7 so as to communicate therewith.

These hot water and water supply communication pipes 20 extend outside the main body 6 by passing through a cylindrical member 22 screwed onto the lower end of the main body 6.

Further, the discharge port 18 is formed integrally with the main body 6 in a non-rotatable manner on the front surface of the main body 6, and has an upwardly shaped substantially U-shaped secondary structure that connects the mixed water passage hole 1 of the valve part a and the outlet 17. A side channel 19 is formed, and a drain plug b is provided on the lower surface of the base end thereof.

The drain plug b has the same structure in both the first and second embodiments, and is composed of a drain hole 24 opened in the discharge port 18 and a plug body 25 that closes this drain hole 24. The plug body 25 has a threaded part 26 which is threaded into the threaded part 26 of the drain hole 24.
7, and a knob-shaped head 29 which is integrally provided at the rear end of the threaded rod portion 27 and whose back surface abuts and latches onto a step portion 28 provided at the outer opening of the drain hole 24.

The threaded rod part 27 is formed in a cylindrical shape with an opening at the tip, and a threaded part 30 that can be screwed into the threaded part 26 of the drain hole 24 is provided on the outer peripheral surface of the threaded part 27 with an appropriate width left in the middle part in the axial direction. 30' is provided.

The screw rod part 27 is longer than the thickness of the surrounding area of the drain hole 24, and closes the drain hole 24.
4, the rear threaded part 30, that is, the threaded part closer to the head 29, is screwed into the threaded part 26 of the drain hole 24, and the front threaded part 3
0' and a midway portion without a screw are formed to protrude into the flow path 19, and an O-ring 31 is fitted between the rear screw portion 30 and the head 29.

Further, the screw rod portion 27 has screw portions 30 and 3 at the front and back.
0', the threaded part 30 before and after it,
It is formed to have a slightly smaller diameter than 30', and a hole 32 communicating with the internal space is bored in its peripheral surface.

A is a container such as a wash basin or sink to which the main body 6 is attached.

This drain plug b can be constructed by twisting the plug body 25 and unscrewing the threaded part 26 of the drain hole 24 of the rear threaded part 30 of the threaded rod part 27, and then the outlet can be opened from the valve part a. Water up to 17 is discharged from the drain hole 24 through the internal space of the plug body screw portion 27 and the hole 32.

In the above two embodiments, the faucets are both hot and cold mixer faucets, but the faucets may be single faucets that discharge only hot water or water, and the structure of the valve part may be any type of structure. It may be of.

(Effects) Since the present invention has the above configuration, it has the following advantages.

When draining water, you do not have to completely remove the stopper; if you loosen the stopper and remove the threaded part on the rear side from the threaded part of the drain hole, water can be drained through the internal space hole of the threaded stem. The remaining water can be drained by pressing the button, and in this state, the front threaded portion is hooked on the threaded portion of the drain hole, so that even if you release your hand from the plug, the plug will not fall out of the drain hole. Therefore, it is possible to prevent powder loss of the stopper with a simple structure and low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a water faucet showing an embodiment of the present invention, showing a state in which the drain valve is closed. Fig. 2 is a longitudinal cross-sectional side view of the main part showing the drain valve opened, Fig. 3 is a half-sectional view taken along the line X-X in Fig. 1, and Fig. 4 is a longitudinal cross-section showing another embodiment. It is a diagram. 6... Main body, 12... Inlet, 17... Outlet, 19... Channel between valve part and outlet, 24...
...Drain hole, 25...Plug body, 26...Threaded part of the drain hole, 27...Threaded rod part, 29...Head, 30...Rear side threaded part of the threaded rod part, 30'...Front side of the threaded rod part Thread part, a...valve part, b...drain plug.

Claims (1)

[Scope of utility model registration request] In a faucet whose main body includes an inlet, an outlet, and a valve section provided between these two ports, and where the flow path between the valve section and the outlet is formed in an upwardly directed substantially U-shape. , a drain plug is provided on the wall at the lower end of the flow path, and includes a drain hole opened in the wall and having a threaded portion on the inner circumferential surface, and a plug body screwed into the drain hole, the plug body being It is formed into a cylindrical shape with an opening at the tip, and has a threaded part on the front and back sides thereof which is screwed into the threaded part of the drain hole, with an appropriate width left in the middle part in the axial direction on its outer peripheral surface, and communicates with the internal space between the front and rear threaded parts. A faucet consisting of a threaded stem with a hole drilled therein, and a knob-shaped head integrally provided at the base end of the threaded stem.