JPS626155B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a top with an anti-freezing device used in a faucet or the like.

In cold regions, water pipes may freeze and break during the winter. In order to prevent such accidents, devices have been developed that automatically drain a small amount of tap water at low temperatures to give movement to the tap water in the pipes and prevent it from freezing.

As part of this, the present invention is intended to equip a stopper attached to a stopper of a faucet or the like with an antifreeze device.

The illustrated embodiment will be described below.

In the figure, 1 is a stopper of a faucet, 2 is a piece with an anti-freeze device attached to the bottom of the stopper, and 4 is:
This is the gasket attached to the frame.

Like the conventional one, the stopper rod 1 has a thread 11 at its lower part to be screwed into a faucet, a knurl 12 and a screw hole 13 for attaching a collar at its upper end, and a threaded hole 13 at its upper end. A cylinder 14 having the same diameter as the root diameter of the thread is placed vertically below the thread 11, and a large chamber 16 is formed by cutting the thread 11 portion and the inside of the shaft portion 15 above the thread 11, and A plurality of cutouts 17 are inserted into the tube 14 from below, and several small screw holes 1 are inserted into the bottom end of the tube.
8... is provided.

The piece 2 with an antifreeze device has a flange-shaped packing support member 2 with a ring-shaped packing 4 fixed to the bottom surface.
1, a housing 22 screwed and fixed to the upper surface of the packing support member, a packing 23 interposed between the housing and the packing support member, and a shaft 27 movably inserted through the packing support member 21 and protruding upward. It consists of a thermoelement 26 that presses the thermoelement upward, a compression spring 29 that springs the thermoelement upward, and a drain valve A that is connected to the shaft 27 and is provided between the housing 22 and the drain valve A so as to be openable and closable. It is attached to the plug rod 1 by inserting it into the chamber 16 from below and screwing the machine screws 35 into the machine screw holes 18.

The packing support member 21 has a vertical hole 24 bored in the center, and a plurality of vertical grooves formed on the inner circumferential surface of the vertical hole, which serve as through passages 25 .

The housing 22 has an inner lower half with a large diameter, an upper half with a step and a slightly smaller diameter, and an outer periphery with a smaller diameter than the chamber 16 in the stopper rod 1 to allow water to flow into the chamber. By providing an outward flange 22b at the lower part of the outer periphery and abutting the flange against the machine screws 35, it is possible to prevent the chamber from coming out of the chamber 16 and to allow slight vertical movement and rotation. ing.

The thermo-element 26 has a temperature-sensing part 26a with a smaller diameter than the gasket 4 at the bottom and a thinner and longer drive part 26b at _{the upper part} . Warming agent 26a ₂
The driving part 26b has a bottomed rubber cylinder _26b2 inside the metal cylinder body _26b1 , and the bottom surface of the rubber cylinder is sealed with the rubber seal _26a3 . A _shaft 27 is inserted into the bottomed rubber cylinder from above, and the upper end of the shaft protrudes upward.
When a receives heat from the surroundings and the temperature sensitive agent 26a ₂ expands, the shaft 27 advances through the rubber seal 26a ₃ and the rubber bottomed cylinder 26b ₂ , and conversely, when it contracts, it retreats. .

Further, the thermoelement 26 has a drive section 26b.
is inserted into the vertical hole 24 of the packing support member 21 so as to be able to move up and down, and loosely inserted into the lower half of the housing 22, and a small groove is provided around the outer periphery of the upper end of the drive portion 26b, and the E-ring 28 is fitted and fixed. A compression spring 29 is interposed between the E-ring and the packing support member 21 to urge the thermoelement upward,
Attach the E-ring 28 to the downward step 2 in the housing 22.
It hits 2a.

The drain valve A is provided in the upper half of the housing 22. A valve hole 34 is formed in the top wall of the housing 22, and a valve part 30a with a large diameter is provided at the lower part of the valve hole. The valve body 30 provided with a packing 31 is loosely inserted, and the valve hole 34 is closed from below by the packing 31, and the valve body 30 has an insertion hole 30 into which the shaft 27 is vertically movably inserted.
b, and the adjustment screw 32 is screwed into the insertion hole from the front, and the adjustment screw is inserted into the shaft 27.
A compression spring 33 is interposed between the lower part of the valve body 30 and the top wall of the housing,
The valve body 30 is urged downward, ie, in the opening direction.

Note that the compression spring 33 of the drain valve A is set to have a smaller elasticity than the compression spring 29 that springs the thermoelement 26 upward.

The adjustment screw 32 of the drain valve A is adjusted so that the drain valve remains closed until the ambient temperature drops to near 0°C.

Since the above configuration is as shown in Figure 1,
It can be used without any problems in the same way as ordinary stopper rods and tops, and when the tap water in the faucet drops to around 0°C in a water-stop state, the shaft 27 of the thermoelement 26 retracts downward. Along with this, the valve body 30 is lowered by the elasticity of the compression spring 33, and the drain valve A is opened, and the tap water in the faucet passes through the through passage 25 of the seal support member 21, the housing 22, and the drain valve A to the stopper rod. It flows out into the chamber 16 of No. 1, and flows out of the faucet through the interruptions 17. Although this outflow is a small amount that drips every few seconds, it gives movement to the tap water in the water pipes and prevents it from freezing.

By the way, in the summer, the tap water in the faucet becomes quite high temperature, so the shaft 27 of the thermoelement 26 may be drawn out excessively. However, at this time, the thermoelement itself descends against the compression spring 29 that springs it upward, thereby preventing problems such as damage.

According to the present invention, it can be used in a general faucet in the same way as a normal faucet, it is only necessary to replace the stopper with the conventional one, and it can be replaced extremely easily by any person. Accidents can be prevented.

Furthermore, the operation is reliable, the configuration is simple, and costs can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is an exploded side view, and FIG. 3 is an enlarged longitudinal sectional side view. 1... Stopper rod, 2... Top with antifreeze device, 4... Gasket, 26... Thermoelement, A... Drain valve.

Claims (1)

[Claims] 1 In a piece used for a stopper rod of a faucet, etc., a ring-shaped gasket is fixed to the lower surface and a collar-like gasket support member is provided with a through passage formed inside, and a thermoelement is movably inserted into the gasket support member. In addition, a housing is connected to the upper surface of the packing support member, and a drain valve is installed in the housing that is opened by the thermoelement at low temperatures, so that a small amount of water that passes through the through flow path, passes through the drain valve, and exits the housing. A piece with an antifreeze device that forms a drainage route and is attached to a stopper using a housing.