JPH0351374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic watering device that automatically supplies water to plants in fixed amounts.

[Conventional technology]

Conventionally, when plants are grown using cultivation containers such as flowerpots, people have to water them every 3.4 days to one week.

[Problem to be solved by the invention]

However, frequent watering is troublesome, and there are also problems in that plants may wither if they forget to water, or root rot may occur due to overwatering.

The present invention was made in view of the problems of the prior art, and by automatically supplying an appropriate amount of water for a certain period of time, it reduces the complexity of watering and prevents plants from dying. The purpose is to make it possible to recognize when the water tank is running out of water.

[Means to solve the problem]

The present invention includes an outer cylindrical body with a water supply hole formed in the lower part of the side wall, a water tank inserted into the outer cylindrical body and provided with a nozzle at the lower end, and when the water in the water tank reaches a predetermined amount, the water tank is moved upward. The structure includes an elastic body that protrudes from the bottom.

[Effect]

The outer cylindrical body is buried in the cultivation container so that its upper end slightly protrudes from the top surface of the sand or soil. A water tank filled with water is inserted into the outer cylinder. Then, water flows out little by little from the lower end of the nozzle and permeates into the culture soil inside the cultivation container through the water supply hole of the outer cylinder.

Furthermore, when the amount of water in the water tank decreases below a certain level, the water tank protrudes upward due to the restoring force of the elastic body, allowing the user to recognize that water needs to be supplied into the water tank.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3.

In FIG. 1 and FIG. 2, automatic water supply device 1
The apparatus includes a cylindrical outer cylinder 2 made of transparent plastic, and a water tank 3 inserted into the outer cylinder 2. A plurality of water supply holes 2b are formed below the side wall 2a of the outer cylindrical body 2.

A cylindrical portion 3a is integrally formed on the lower surface of the water tank 3. A cap 4 is screwed onto the outer periphery of this cylindrical portion 3a. A nozzle 5 is formed on the lower surface of the cap 4. A coil spring 6 with a weak spring force is disposed around the outer periphery of the cap 4, and urges the lower surface of the water tank 3 upward. The strength of the coil spring 6 is set so that when the load on the water tank 3 becomes less than a certain level, its return force causes the water tank 3 to protrude from the upper surface of the outer cylindrical body 2.

Further, the upper end 3b of the water tank 3 is colored in the same color as the cultivation soil, and the upper edge 3c is colored in a conspicuous color such as red.

Next, the operation of the above embodiment will be explained.

First, the outer cylindrical body 2 is buried in cultivation soil in the cultivation container 7. Remove the cap 4 of the water tank 3 and fill the water tank 3 with water. The cap 4 is screwed together again, and the cap 4 is inserted into the outer cylindrical body 2 with the cap 4 facing downward. Then, the coil spring 6 is compressed, and water gradually flows out from between the nozzle 5 and the bottom of the outer cylinder 2a, and this water flows into the water supply hole 2 formed in the outer cylinder 2.
It is impregnated into the cultivation soil from step b.

When the amount of water in the water tank 3 decreases to below a certain load, the water tank 3 is pushed up by the restoring force of the coil spring 6, and the upper peripheral edge 3c protrudes from the upper edge of the outer cylindrical body 2. Since the upper edge 3c of the protruding water tank 3 is colored conspicuously, it can be recognized that water needs to be supplied to the water tank 3.

Further, by rotating the cap 4, the height of the cap 4 can be changed and the amount of water flowing from the nozzle 5 can be adjusted.

In FIG. 4, the outer cylindrical body and the water tank 3 have an arcuate cross section so that they can be used even in small plant containers.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, a water tank with a nozzle at the lower end is inserted into an outer cylinder with a water supply hole formed at the bottom, and when the water volume in the water tank becomes less than a certain level, Since an elastic body is provided that causes the tank to protrude upward, water is automatically supplied in a predetermined amount for a predetermined period of time until the amount of water in the water tank runs out, thereby eliminating the trouble of having to repeatedly water. Furthermore, when the water in the water tank falls below a certain level, it protrudes upward, so it is possible to recognize that water needs to be replenished.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing how the automatic water supply device of the present invention is used, Fig. 2 is a perspective view of the automatic water supply device, and Fig. 3 is a perspective view of the automatic water supply device.
The figure is a perspective view of the water tank in use, and FIG. 4 is a perspective view showing a modified example of the shape of the water tank. 1...Automatic water supply device, 2...Outer cylinder, 2b...
Water supply hole, 3...Water tank, 5...Nozzle, 6...
Coil spring (elastic body).

Claims (1)

[Scope of Claims] 1. An outer cylindrical body with a water supply hole formed in the lower part of the side wall; a water tank inserted into the outer cylindrical body and provided with a nozzle at the lower end; An automatic water supply device for plants, characterized by comprising an elastic body that causes a water tank to protrude upward.