JPH0679866U - Sink overflow device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to safely fill a large capacity sink with an inexpensive overflow device. [Structure] An overflow pipe 5 is watertightly and vertically slidably inserted through a packing into an inner periphery of a drain trap 3 formed on a bottom wall surface 21 of a sink 2 so that the overflow pipe 5 is inserted into the drain trap 3. The height of the upper limit of movement of 5 is set lower than the upper edge of the sink 2, and the overflow pipe 5 drawn out from the drain trap 3 as necessary.
The height of the allows to fill the sink 2 with water at the desired water level.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an overflow device that regulates the amount of water when pouring water into a sink in a sink installed in a kitchen or the like of a house.

[0002]

[Prior art]

 There are typically two types of sinks installed in kitchens of multi-family houses and detached houses: one-tank sink type and two-tank sink type. The one-tank sink type sink is equipped with a single sink with a water stop plug that can be inserted into and removed from the drain outlet of the drain trap that is opened at the bottom of the sink. Generally, overflow means is not provided. Most of the sinks installed in water heaters of small and medium-sized houses such as apartments and offices are of this single tank sink type. In addition, the two-bath sink type sink is equipped with a sink of the same size as the one-bath sink type and a sink with a smaller volume than that, and an overflow means is provided for the smaller sink. Often used in large residential kitchens and luxury homes.

[0003]

[Problems to be solved by the device]

 The one-tank sink type sink is convenient because it can be used as a large-capacity washing container by filling water in the sink by sealing the drain outlet with a water stopcock, but it is full when water is supplied to the sink. Until then, there is a problem that the user cannot leave the sink. This may lead to unexpected accidents, such as the sink fills up while the user is away from the sink, and eventually overflows, flooding the floor surface and even flooding to the lower floors. Because. In addition, a two-bath sink type sink cannot be used as a large-capacity washing tank because a small sink is generally provided with an overflow means, and the structure of the piping etc. is complicated. Therefore, there is a problem that the product unit price and the installation work cost are high.

The present invention has been made under the circumstances as described above, and its technical problem is to make it possible to safely fill a large-capacity sink with an inexpensive overflow device. Is to

[0005]

[Means for Solving the Problems]

 The above technical problems can be effectively solved by the present invention. That is, in the overflow device of the sink according to the present invention, the overflow pipe is inserted into the inner circumference of the drain trap provided on the bottom wall surface of the sink of the sink through the packing so as to be watertight and vertically slidable. The upper limit of the movement of the overflow pipe in the state of being inserted into the sink is set lower than the upper edge of the sink.

[0006]

[Action]

 In the overflow device configured as described above, when water is filled in the sink, the overflow pipe is pulled out from the drain trap and rises to a desired height. The rising overflow pipe is held by packing, and this packing seals between the overflow pipe and the main body of the drain trap, so that the upper end of the overflow pipe becomes a substantial drainage port. Therefore, water can be filled in the sink up to the height of the upper end of the overflow pipe, and if water continues to be supplied after reaching this height, the overflow pipe overflows into the drain trap. Further, since the maximum height when the overflow pipe is started is lower than the height of the upper edge of the sink, the height of the water surface supplied in the sink is kept lower than the upper edge of the sink. . When draining the water stored in the sink, push the overflow pipe into the drain trap so that its upper end is flush with the upper opening edge of the drain trap on the bottom wall of the sink. It flows from the bottom wall of the sink directly into the overflow pipe, and is drained through the drain trap.

[0007]

【Example】

 FIG. 1 is an explanatory view showing a state in which water is sprinkled on a sink equipped with an overflow device according to an embodiment of the present invention, and FIG. 2 is a half cross-sectional view showing an enlarged main part thereof. Is a water supply curran, 2 is a sink, 3 is a drain trap connected to the bottom of the sink 2, and 4 is a drain pipe connected to the drain trap 3.

The drain trap 3 includes a casing 31 whose upper end is watertightly fixed to a drain hole formed in the bottom wall surface 21 of the sink 2 via an elastic seal 32 and a mounting flange 33, and an inside of the casing 31. It is provided with a cup member 34 which is arranged in a space and whose upper end is fixed to the mounting flange 33, and a cylindrical body 35 which is arranged inside thereof and whose upper end is fixed to the mounting flange 33 together with the cup member 34. On the side wall of the cup member 34, an overflow hole 34a is formed above the lower end edge 35a of the tubular body 35, and the drainage pipe 4 is connected to the lower end opening 31a of the casing 31, It is sealed with an O-ring 37 which is fastened with a cap nut 36.

An overflow pipe 5 is watertightly and vertically slidably inserted into the tubular body 35 of the drainage trap 3 via a packing 6 made of a soft resin material attached to an upper end portion thereof. Due to its elasticity, the packing 6 has a proper close contact with the outer peripheral surface of the overflow pipe 5. The lower limit of movement of the overflow pipe 5 with respect to the drain trap 3 is regulated by a flange portion 51 formed on the upper end of the overflow pipe 5, that is, the flange portion 51 has an upper edge of the mounting flange 33 of the drain trap 3 on the bottom wall surface 21 of the sink 2. It can be completely housed in the tubular body 35 of the drain trap 3 until it becomes substantially flush with the above. The length of the overflow pipe 5 is the height of the upper limit of movement when the drain trap 3 is inserted in the tubular body 35, that is, the maximum height of the flange 51 when the overflow pipe 5 is raised from the bottom wall surface 21 of the sink 2. Is set so as not to exceed the height of the upper edge of the side wall surface 22 of the sink 2. A mesh-shaped strainer 52 is attached to the inner circumference of the overflow pipe 5 to collect raw garbage in water during drainage.

As shown in FIG. 3, the overflow pipe 5 is normally pushed into a state where it is completely stored in the drain trap 3, and therefore, it is used, for example, for rinsing and hand washing, and is used as a bottom of the sink 2. The water that has dropped onto the wall surface 21 flows down from the bottom wall surface 21 through the overflow pipe 5 to the inner periphery of the cylindrical body 35 in the cup member 34 of the drain trap 3, and the lower edge 35a of the cylindrical body 35 It bypasses the lower side, flows out from the overflow hole 34a formed in the side wall of the cup member 34 into the casing 31 on the outside thereof, and is drained to the drain pipe 4 connected to the lower end thereof. Further, in the cup member 34, water up to the height of the lower end of the overflow hole 34a is always accumulated as the sealing water S, and the lower end edge 35a of the tubular body 35 is always submerged in the sealing water S. As a result, the sewage gas in the drain pipe 4, which is accompanied by a bad smell, is shut off.

When the sink 2 is filled with water W and used for washing dishes, cooking materials, etc., as shown in FIGS. 1 and 2, the overflow pipe 5 is moved from the bottom wall surface 21 of the sink 2 to a desired height. Launch. The overflow pipe 5 is maintained at the rising height by the frictional force of the packing 6 that is in close contact with the outer peripheral surface of the overflow pipe 5, and the actual drainage port is higher than the bottom wall surface 21 of the sink 2. The water W is stored in the sink 2 without sealing the drain outlet with a water stopcock or the like, and when the water level L exceeds the height of the upper flange portion 51 of the overflow pipe 5, this overflow occurs. Since the excess water overflows from the pipe 5 to the drain trap 3, the water level L is maintained at the height of the upper flange portion 51. Since the maximum height of the overflow pipe 5 in the rising state is lower than the upper edge of the sink 2, the water W supplied into the sink 2 does not overflow from the upper edge of the sink 2.

When draining the water W stored in the sink 2, the overflow pipe 5 is pushed down to the lower limit of its movement from the state shown in FIGS. 1 and 2, and is completely stored in the drain trap 3 as shown in FIG. To do. As a result, the drainage port of the overflow pipe 5 becomes lower than the water level L and becomes the same height as the bottom wall surface 21 of the sink 2, so that the water W is drained from the overflow pipe 5 through the drainage trap 3. Further, dust such as raw dust floating in the drainage is collected by the strainer 52 when flowing down the overflow pipe 5, and is prevented from entering the drain trap 3 and the drain pipe 4. The dust collected in the strainer 52 can be removed by pulling out the overflow pipe 5 from the drain trap 3 for cleaning or by removing only the strainer 52 from the overflow pipe 5.

The present invention is not limited to the above-described embodiment, and the present invention can be applied to other structures such as the drain trap 3 having a meandering shape. In addition, a handle member such as a hanging ring can be provided on the flange portion 51 of the overflow pipe 5 so that the drainage trap 3 can be easily pulled out and stored, and the packing 6 and other detailed shapes can also be provided. It is not particularly limited to the illustrated one.

[0014]

[Effect of device]

 According to the overflow device of the sink according to the present invention, the following effects can be realized. (1) Normally, the sink can be used as usual. (2) If necessary, draw out the overflow pipe from the drain trap and raise it to the desired height from the bottom wall of the sink to fill the inside of the sink without relying on the tight stop of the drain outlet with the water stopcock. You can (3) When pouring water into the sink, if the water level continues to reach the height of the upper end of the overflow pipe rising from the bottom wall surface of the sink, if water continues to flow from the overflow pipe, Since the water is drained to the drain trap, the water surface is maintained at a certain level below the upper edge of the sink, so it is possible to reliably prevent accidents where water overflows from the sink and inundates the floor due to forgetting to squeeze the feed water. (4) The amount of water when water is poured into the sink can be arbitrarily set by the height of the overflow pipe.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state where a sink provided with an overflow device according to an embodiment of the present invention is filled with water in a sink by starting an overflow pipe.

FIG. 2 is a half cross-sectional view showing an enlarged main part in the above embodiment.

FIG. 3 is an enlarged half sectional view showing a normal state in which an overflow pipe is completely housed in a drain trap in the above embodiment.

[Explanation of symbols]

 2 Sink 3 Drain trap 5 Overflow pipe 6 Packing

Claims (1)

[Scope of utility model registration request] 1. An overflow pipe is watertightly and vertically slidably inserted through a packing into an inner periphery of a drain trap provided on a bottom wall surface of a sink of a sink so that the overflow pipe is inserted into the drain trap. An overflow device for a sink, characterized in that the height of the upper limit of movement of the pipe is set lower than the upper edge of the sink.