JP2002005015A - Valveless air pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new valveless air pump of 3 finger operation type which can be operated by a thumb, a index finger and a middle finger, which is smaller than a golf ball size and convenient to inflate a small hollow outfit or a small toy containing air. SOLUTION: This air pump is integrally molded with the plastic material which has a little elasticity, and it is collapsed when external force is impressed, it is restored by itself when the external force is released, the periphery wall of a cylindrical bellows, and the shutdown wall on upper and lower sides of the periphery wall, and a wind bag portion of the hollow which was made airtight, and constituted an suction port established in the center of an upside shutdown wall, an exhaust port established in the center of a lower part shutdown wall, and an exhaust nozzle having a conic type tubular fixed as communicating with an edge of the exhaust port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thumb, forefinger, and the like having a size smaller than the size of a golf ball, which is convenient for inflating a small inflatable pneumatic toy or a small hollow inflatable article. The present invention relates to a three-finger operation type valveless air pump that can be operated with three middle fingers.

[0002]

2. Description of the Related Art A known air pump has a problem that it has a valve and is relatively large in size, so that the cost is high and it cannot be said that the air pump is sufficiently preferable as an accessory service product. there were.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel valveless air pump which solves the above problems.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, a valveless air pump according to the present invention is formed integrally with a synthetic resin material having a slight elasticity, and receives an external force. When the external force is released, the outer wall of the cylindrical bellows that is restored by itself when the external force is released, and a closed air-blowing part formed by the closed walls on the upper and lower surfaces of the outer peripheral wall, and the center of the upper closed wall. It comprises an opened air inlet, an air outlet opened in the center of the lower obstruction wall, and a conical tubular air nozzle connected to an edge of the air outlet.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in the figure is a one-piece integrally formed of a synthetic resin material having a slight elasticity. A hollow air-blowing part 4 airtightly sealed by an outer peripheral wall 1 of a cylindrical bellows restored by the above and closed walls 2 and 3 on the upper and lower surfaces of the outer peripheral wall 1, and an intake hole 5 opened in the center of the upper closed wall 2
And an air supply hole 6 opened at the center of the lower closing wall 3, and a conical tubular air supply nozzle 7 connected to an edge of the air supply hole 6.

[0006]

Since the valveless air pump according to the present invention has the above-described configuration, air is injected into a pneumatic vinyl toy having a configuration that can be expanded and contracted through a supply / exhaust plug 10 as shown by reference numeral 9 in the drawing. If it is desired to swell, first place the index finger and the middle finger of one hand on the lower surface of the lower blocking wall 4 so that the tip of the air supply nozzle 7 protrudes from between these fingers. 7 is inserted into the hole of the air supply / exhaust plug 10 to form a connection state. While maintaining this connection state, the intake hole 5 is closed by the abdominal surface of the tip of the thumb of the same hand, and the closed state is maintained. When the blast part 4 is crushed by applying force to the thumb, the air in the blast part 4 is sent to the pneumatic vinyl toy 9 via the air supply nozzle 7 by the crushing, and the blast part 4 is crushed. With thumb at air inlet 5
Away from the opening of the air intake hole 5 and the release of the blast portion 4. In this case, the blast portion 4 expands and returns with its own force, sucks in outside air from the intake hole 5, and restores. The above-mentioned steps are repeated to bring the pneumatic vinyl toy 9 into a completely inflated state. After confirming the completely inflated state, the tip of the air sending nozzle 7 is pulled out of the hole of the air sending / exhaust plug 10 to remove the air sending / exhaust plug 10. It is designed to be used according to the procedure such as closing.

[0007]

The valveless air pump according to the present invention is integrally formed of a synthetic resin material having a slight elasticity as described above, and is crushed when subjected to an external force to eliminate the external force. A hollow wind-blowing part airtightly sealed by an outer peripheral wall of a cylindrical bellows that is restored by itself when it is made, and a closed wall on the upper and lower surfaces of the outer peripheral wall, an intake hole opened in the center of the upper closed wall, Since it is composed of an air supply hole opened in the center of the side closing wall and a conical tubular air supply nozzle connected to the edge of the air supply hole, that is, because it has no valve, it has a small size. It can be configured and provided at low cost, is extremely preferable for free provision as an attached service product, etc., and has a significant effect to completely achieve the intended purpose. is there.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is a partially cut-away side view showing the same crushed state with fingers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer peripheral wall of cylindrical bellows 2 Upper blocking wall 3 Lower blocking wall 4 Hollow blast part 5 Inlet hole 6 Inlet hole 7 Inlet nozzle 9 Pneumatic vinyl toy 10 Inlet and exhaust plug

Claims (1)

[Claims] An outer periphery of a cylindrical bellows, which is integrally formed of a synthetic resin material having a slight elasticity, and is crushed when subjected to an external force and is restored by itself when the external force is eliminated. A hollow blast portion airtight by the wall and the upper and lower closed walls of the outer peripheral wall, an air intake opening formed in the center of the upper closed wall, an air vent opened in the center of the lower closed wall, A valve-less air pump comprising: a conical tubular air supply nozzle connected to an edge of a pore.