JPH0140329Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a suction cup with a timer function.

(Prior Art) A conventional suction cup is held in a suction state unless the suction cup is forcibly removed from the surface to be suctioned. Therefore, when an object to be supported, for example, a dirt remover for a washing machine, is suspended from a suction cup attached to the wall of the washing tub, the detergent is absorbed by the dirt remover because the dirt remover is always floating on the water surface. This weakened the detergent's cleaning power. Therefore, it is necessary to keep the dust remover away from the water surface until the detergent dissolves in the water, and then insert the dust remover into the water after the detergent dissolves.

(Problems to be Solved by the Invention) Therefore, in the past, the worker had to manually drop the supported object after a predetermined period of time had elapsed.

The purpose of the present invention is to provide a suction cup that solves the above problems.

(Means for Solving the Problems) The suction cup of the present invention is formed into a substantially hollow conical shape and is elastically deformable.The suction cup is formed around the outside of the central part of the suction body so as to be in close contact with the surface to be suctioned. An air reservoir chamber is recessed on the back surface of the adsorbent to fill air at approximately normal pressure when the adhesion part is brought into close contact with the surface to be adsorbed. An almost vacuum-like cavity formed between the center part of the adsorbent and the surface to be adsorbed when adsorbed to a surface is communicated with the air reservoir chamber, and a very small amount of air is supplied from the air reservoir chamber. It has a configuration in which a flow path having a minute cross-sectional area is formed to allow the flow to gradually flow into the cavity.

(Function) When adsorbing the suction body of the suction cup to the surface to be suctioned,
When the adhesion part provided around the outer periphery of the center of the adsorbent is brought into close contact with the surface to be adsorbed, air at approximately normal pressure is sealed in the air chamber recessed on the back side of the adsorption part, and at the same time the adsorption occurs. Due to the elastic restoring force of the body, a substantially vacuum-like cavity is formed in the center of the adsorbent body, and a pressure difference occurs between the air reservoir chamber and the cavity. If the adsorbent is left in this state, a very small amount of air will gradually flow into the cavity from the air storage chamber through the channel having a small cross-sectional area.
As the pressure inside this cavity gradually increases from the vacuum state, the adsorption force of the adsorbent decreases over time, and when the adsorption force of the adsorbent decreases below the external force applied to the adsorbent, the adsorption body stops. Automatically detaches from the surface to be attracted.

(Example) Hereinafter, an example embodying the present invention will be described in detail with reference to the drawings.

Dust removal tool 10 for collecting dust during washing
A cylindrical knob 1 is attached to a synthetic resin suction cup S worn on the washing machine to hang it via a string 11.
and an elastically deformable suction body 2 that is open at the front and has a substantially hollow conical shape. It is set up.

The adsorbent 2 is formed so that its wall thickness gradually decreases from the center portion 2a toward the tip so that the restoring elastic force near the center portion 2a is stronger than near the tip, and in order to make it come into close contact with the surface W to be attracted. The back surface 2A of the contact portion 2b provided around the outside of the central portion 2a of the adsorbent 2 is provided with air at approximately normal pressure to be sealed in a state where the back surface 2A is in close contact with the surface W to be adsorbed. Air reservoir chamber 3
is recessed along the circumferential direction. In addition, between the center part 2a of the adsorbent 2 and the surface W to be adsorbed, the adsorbent 2
When the suction body 2 is elastically deformed and pressed onto an object to be attracted and then left, a substantially vacuum-like cavity 5 is formed by the elastic restoring force of the central portion 2a of the suction body 2.

On the back surface of the adsorbent 2, when the adsorbent 2 is left adsorbed to the adsorbed surface W with the contact part 2b of the adsorbent 2 in close contact with the adsorbed surface W, a very small amount of air is released into the air reservoir chamber 3. The air inside the air reservoir chamber 3 has a small cross-sectional area in order to gradually flow from the air into the cavity 5, gradually increase the air pressure inside the cavity 5, and reduce the adsorption force of the adsorbent 2 over time. A flow path 4 communicating between the air storage chamber 3 and the inside of the cavity 5 connects the air storage chamber 3 to the central portion 2a of the adsorbent 2.
It is formed like a stripe across the back side of the .

Next, the operation and effects of the embodiment having the above configuration will be explained.

When the dust removal tool 10 is suspended from the knob 1 of the suction cup S, when the adsorption body 2 of the suction cup S is elastically deformed and pressed against the suction surface W, an air reservoir chamber of the contact portion 2b that is in close contact with the suction surface W is formed. At the same time, a substantially vacuum-like cavity 5 is formed in the center of the adsorbent body 2 by the elastic restoring force of the adsorbent body 2, and air at approximately normal pressure is sealed in the air reservoir chamber 3. A pressure difference occurs between the inside and the cavity 5. If the adsorber 2 is left in this state, a very small amount of air will flow through the channel 4 and gradually flow from the air storage chamber 3 into the cavity 5.
The pressure inside the adsorbent body 2 gradually rises from the vacuum state.
The adsorption force decreases over time, and after a certain period of time, the air pressure in the air reservoir chamber 3 and the air pressure in the cavity 5 become equal. As air flows into the cavity 5 from the air storage chamber 3, the degree of vacuum in the cavity 5 gradually decreases, and the cavity 5 gradually expands, causing the adsorption force of the adsorbent 2 to gradually decrease. When the suction force of the suction body 2 falls below the external force applied to the suction body 2 by the dust remover 10, the suction body 2 automatically separates from the surface W to be suctioned.

For this reason, the suction cup S, which is attached to the wall surface of the washing layer so that the dust removal tool 10 is separated from the water surface in the washing tub, loses its adsorption force after a certain period of time, and the suction force is weakened after a certain period of time. Since the dust remover 10 is automatically removed from W, it is possible to drop the dust remover 10 into the water automatically after the time required for dissolving the detergent has elapsed (for example, it is set to about 3 minutes). Therefore, the worker does not have to put the dust remover 10 into the water by hand, and since the dust remover 10 does not absorb detergent at the beginning of washing, the cleaning power of the detergent is not weakened, and the dust can be properly removed during washing. Garbage removal tool 10
It can be collected by Furthermore, the sucker S of this example
The air reservoir chamber 3 and flow path 4 are connected to the inner peripheral surface 2 of the adsorbent 2.
Since it is formed in A, it is not affected by external influences, especially moisture, and can always exhibit the same function and effect.

(Effects of the invention) As detailed above, according to the invention, the object supported by the suction cup can be automatically detached from the suction surface after a certain period of time, so the suction cup can be given a timer function. This has the effect of reducing the labor of the operator.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view of the suction cup, Fig. 2 is a sectional view taken along the - line, Fig. 3 is a sectional view showing the suction state, and Fig. 4 is a perspective view showing its usage state. It is a diagram. 2... Adsorption body, 2b... Close contact part, 2a... Center part, 3... Air reservoir chamber, 4... Channel, 5... Cavity part, S... Suction cup, W... Adsorption surface.

Claims (1)

[Scope of utility model registration request] The adhesion part is provided around the outside of the central part of the adsorbent, which is formed to be elastically deformable in the shape of a hollow cone, so that the adhesion part is brought into close contact with the adsorption surface. An air reservoir chamber is recessed to fill air at approximately normal pressure when the adsorbent is adsorbed, and the back surface of the adsorbent is provided so that when the adsorbent is adsorbed to the surface to be adsorbed, the central part of the adsorbent and the A minute cross-sectional area is formed in order to communicate the inside of the almost vacuum-like cavity formed between the suction surface and the air reservoir chamber, and to gradually flow a very small amount of air from the air reservoir chamber into the cavity. A suction cup characterized in that a flow path is formed therein.