JPH0653868U - Valve device for air injection - Google Patents

Abstract

(57) [Summary] [Purpose] Air injection is easy, the injected air is prevented from leaking, and proper air pressure is always maintained. [Structure] A flange bonded to the air float side is integrally formed, and a rubber tube is coated on the outer surface of the inside of the connector having threaded portions inside and outside, and an air passage is formed inside thereof. The valve body having the formed protruding portion is screwed, and the rubber tube is expanded by the pressure of the air injected during the air injection, so that the air injection can be performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air injection valve device for injecting air into the inside of an air float for aquaculture, an air mattress, etc., and in particular, it is formed so that air can flow in the protrusion formed on the valve body. The present invention relates to an air injection valve device in which an elastic rubber tube is coated on the outside so that air can be easily injected and leakage of the injected air can be prevented.

[0002]

[Prior art]

 Conventionally, such a valve device has a screw formed inside as shown in FIG. 1, and has an outer member (1) attached to the inside of the air float (A) and a screw inside the outer member (1). And a rubber plate that is inserted into the inner member (2) having a large number of through holes (2a) formed therein and the inner member (2) to close and open the through holes (2a). (3) When air is injected through the inner member (2) during air injection, the rubber plate (3) is bent by the pressure of the air as shown by the dashed line when the air flows through the through hole (2a). By doing so, the air can be injected.

[0003]

[Problems to be solved by the device]

 However, in the conventional techniques as described above, it is difficult to maintain a predetermined air pressure because the air of the air float leaks through the side of the rubber plate after the air is injected. Therefore, there is a problem that air must be re-injected at any time, and in particular, when the rubber plate is damaged by foreign matter, air cannot be injected.

[0004]

[The purpose of the device]

 The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide an air injection valve device capable of preventing leakage and always maintaining an appropriate air pressure.

[0005]

[Means for Solving the Problems]

 To achieve the above object, an air injection valve device according to the present invention is an air injection valve device for injecting air into an air buoy, which is heat-welded to an inner surface of the air buoy and has a first inner surface. A connector having stepped ends and a second end, a valve body having a protrusion in which an air passage is formed, which is mounted in the connector via a packing, and an outer periphery of the protrusion. It is characterized in that the surface is covered with a rubber tube and a lid attached to the tip of the above-mentioned connecting tool via packing to prevent the injected air from leaking so that the pressure of the air can be maintained at all times.

[0006]

【Example】

 An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 2 and FIG. 3, reference numeral (10) indicates a connecting tool integrally formed with a flange (11) which is heat-welded to the inner surface of the air float (A).

The connecting tool (10) has a first end portion (12) and a second end portion (13) formed stepwise inside, and a screw is formed inside and outside the second end portion (13). The parts (14a) and (14b) are formed respectively, and the first and second ends (12) and (13) are provided with crimping protrusions (12a) and (13a) respectively. A through hole (10a) is formed below the screw portion (14a) so that air can be discharged.

On the other hand, a valve body (16) having a projecting portion (15) at the approximate center is screwed into the screw portion (14a) formed inside the connector (10), and An air passage (17) is formed inside to allow air to flow therethrough. One end of the air passage (17) communicates with a recess (16a) formed in the center of the valve body (16), and the other end communicates with the outer peripheral surface of the protrusion (15).

Further, when air is injected into the air float (A) on the outer peripheral surface of the protrusion (15), the air is expanded to form an air injection passage, and a predetermined pressure is applied to the air float (A). The elastic rubber tube (19) is covered to prevent air leakage in the air float (A) when the air is injected. A locking protrusion (18) is provided on the outer peripheral surface of the protrusion (15) to prevent the rubber tube (19) from escaping when air is injected into the air float (A). .

Further, a lid (20) for preventing foreign matter such as dust from entering is attached to the screw portion (14b) formed on the outer side of the connector (10). Further, on the opposite side of the crimping protrusions (12a) (13a) formed on the connector (10), packings (21a) (21b) that prevent leakage of the injected internal air and maintain a constant air pressure are provided. ) Is provided.

[0012]

[Action]

 Next, the operation of the present invention having the above configuration will be described.

First, when air is injected into the valve body (16) through an air injection means (not shown) with the lid (20) separated from the connector (10), the air passage (17 ) The air flowing into the tube applies pressure to the rubber tube (19), so that the rubber tube is inflated as indicated by the chain line in Fig. 3, and the outer peripheral surface of the protruding part (15) and the rubber tube (19) are An air passage is formed between the side surface and the side surface, and air can be injected into the air float (A).

Further, when the air injection is finished so that a constant air pressure is maintained in the air float (A), the rubber tube (19) is brought into close contact with the outer peripheral surface of the projecting portion (15) by its elasticity, and the air passage. Since the (17) is closed, the air in the air float (A) does not leak.

When the lid (20) is tightened to the screw portion (14b) of the connecting tool (10) after the air injection is completed, foreign matter can be prevented from entering the valve body (16) from the outside and the packing can be prevented. The air buoy (A) is provided because the gas (21a) (21b) and the crimping protrusions (12a) (13a) formed on the first and second ends (12) (13) are in close contact with each other to maintain airtightness. Air leakage inside is prevented and a constant air pressure is always maintained.

On the other hand, when the air in the air floater (A) is to be discharged, the lid (20) and the valve body (16) are separated from the connector (10), and then the connector (10) is removed. It is easily discharged through the inner through hole (10a).

[0017]

[Effect of device]

 As described above, according to the present invention, by forming the air passage in the protruding portion provided inside the valve body and covering the outer peripheral surface thereof with the rubber tube, the pressure is exerted by the pressure when the air is injected. As the rubber tube expands, an air passage is formed, making it easy to inject air.After the injection, the elasticity of the rubber tube closes the air passage to prevent air leakage, and the air buoy keeps a constant air pressure. Has an excellent effect that can be retained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a connection of a conventional air injection valve device.

FIG. 2 is an exploded perspective view of an air injection valve device of the present invention.

FIG. 3 is a sectional view of an assembled state of the air injection valve device of the present invention.

[Explanation of symbols]

 (10) ... Coupling (12) ... First end (13) ... Second end (12a) ... Crimping ridge (13a) ... Crimping ridge (15) ... Projection (16) ... Valve body (17) )… Air passage (18)… Locking protrusion (19)… Rubber tube (20)… Lid (21a)… Packing (21b)… Packing (A)… Air float

Claims (3)

[Scope of utility model registration request] 1. An air injecting valve device for injecting air into an air buoy, which is heat-welded to an inner surface of the air buoy and has a first end and a second end in a stepwise manner inside. A formed connecting member, a valve body having a protruding portion inside which an air passage is formed, which is mounted in the connecting member via a packing, a rubber tube covered by an outer peripheral surface of the protruding portion, and the connecting member. A valve device for injecting air, comprising a lid attached to the tip of the via a packing. 2. The valve body according to claim 1, wherein an engaging projection is integrally provided on an outer peripheral surface of a projecting portion formed on one side of the valve body so as to detach the rubber tube. Air injection valve device. 3. The connection tool is integrally formed with a crimping ridge that is in close contact with the packing on a first end portion and a second end portion formed inside to prevent air leakage in the air floater. The valve device for air injection according to claim 1, wherein the valve device is provided so as to project.