JPS5846957Y2 - Air valve for rubber boat - Google Patents

Description

[Detailed description of the invention] This invention relates to an air valve for rubber boats used for leisure, rescue, and other purposes in rivers, lakes, and the sea.

This idea was made for the purpose of preventing the valve body and valve body of the air valve from separating.

The valve body and valve box of a conventional air valve are such that the threaded part at the center of the outer periphery of the valve body is screwed into the screw hole of the valve body, and the valve body is moved forward and backward according to the direction of rotation of the valve body, so that its tip surface is inside the valve body. It touches and separates from the valve seat and opens and closes the air hole in the valve box.

Therefore, when the valve body is rotated in the opening direction, it is detached from the valve box, and if the valve body is carelessly removed from the valve body, the valve body may sometimes be lost.

Therefore, normally, an annular groove is provided on the outer periphery of the base of the valve body, a ring is fitted into this groove, and this ring is tied to a rubber boat body or the like using a string-like body.

However, the string is not only inconvenient to handle as it gets wrapped around, but also has durability problems such as being cut midway.

This invention was made for the purpose of eliminating these drawbacks.

This invention will be explained below with reference to drawings as examples.
Reference numeral 1 denotes a valve box having a cylindrical shape with a bottom. An air hole 4 is bored in the bottom part 3 constituting the valve seat 2, and a female thread 6 is formed in the inner surface of the upper end of the peripheral wall 5.

7 has stepped portions 7a and 7b on the outer circumferential surface and inner circumferential surface along the opening 8, respectively.
A pair of rims having a thin band-shaped wall rim formed therein as appropriate, and whose bases are separated from the peripheral wall 5 and protrude inwardly at opposing positions of the rim 7. The tongs 9 and 10 are formed.

Reference numeral 11 denotes a valve body having a bottomed cylindrical shape, and has a knob rim 12 formed on the outer periphery of the upper end by appropriately projecting in the shape of a brim, and is screwed into the female thread 6 of the valve body 1 at approximately the center of the outer periphery. A screw 13 is formed, and a communicating hole 14 connected to the connecting hole 20 is formed below the screw 13.

Reference numeral 15 denotes a fitting protrusion formed at the lower end of the valve body 11, which is formed to have an appropriately small diameter so as to fit into the air hole 4 of the valve box 1, and this fitting protrusion 15 has a groove 16 formed at its base. O-ring 1
When the valve body 11 is mounted on the valve body 1, the O-ring 11 contacts the edge of the air hole 4 to prevent air flow.

Reference numeral 18 denotes a retaining groove formed between the above-mentioned knob edge 12 and the lower screw 13, and when the valve body 11 is installed in the valve box 1, the locking edge 9
, 10 are formed so as to fit therein.

Reference numeral 19 is a connecting female thread formed on the inner circumferential wall surface of the connecting hole 20 of the valve body 11 so as to connect the cap or the air nozzle.

In addition, 21 is a rubber plate for mounting the valve body 1, and
The air valve 30 is constructed by integrally baking and bonding the valve box 1 housing the air valve 1 to the rubber boat body.

Since this invention is constructed as described above, when the valve body 11 is rotated clockwise with the knob 12, the valve body 11 descends toward the valve seat 2 and connects its tip surfaces.

At this time, the side surface of the O-ring 17 is pressed and the air hole 4 of the valve box is closed.

Next, when the valve body 11 is rotated counterclockwise and raised, the O-ring 17 attached to the distal end surface of the valve body 11 separates inward from the valve seat 2.

Therefore, the connection hole 20 of the valve body 11 with the air pump is the communication hole 1.
4 communicates with the inside of the valve box 1, and if air is sent to the connection hole 20, it can be sent from the air hole 4 to an air chamber (not shown) through the communication hole 14.

Then, by turning it clockwise again, the air hole 4 can be closed.

Next, when the valve body 11 is rotated to the left, the valve body 11 rises, and the upper end edge of the screw 13 contacts the stop edges 9 and 10 of the valve body 1.

At this point, the valve body 11 is prevented from rising any further, and therefore rotates. Therefore, the valve body 11 does not come off the valve body 1, and the knob rim 12 remains closed while the valve body 11 is moving. This depends on the distance between the lower edge and the upper edge of the screw 13.

As described above, this invention provides a mouth rim I connected to the female screw 6 of the valve body 1, a part of which is curved and protrudes inward, and a stop rim 9,
10, and these retaining edges 9, 10 are always engaged with the retaining groove 18 formed in the valve body 11, so that the valve body 1
1 is loosened, there is no risk that the valve body 11 will come off from the valve body 1, so there is no risk of losing the valve body 11 or accidentally removing the valve body 11 from the valve body 1. This prevents malfunctions such as letting the air out of the rubber boat.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of this devised air valve, Figure 2 is a partially cutaway side view of the valve body alone, Figure 3 is a partially cutaway side view of the valve body alone, and Figure 4 is the valve body alone. FIG. 1... Valve box, 2... Valve seat, 4...
... Air hole, 5 ... Peripheral wall, 6 ... Female thread, 7 ... Mouth rim, 8 ... Opening, 9゜1
0...Ring edge, 11...Valve body, 12...
...Knob edge, 13...Screw, 14...
...Communication hole, 15...Mating protrusion, 16...
・・Groove, 17・・・Oringumi 18・・・・
・Engagement groove, 19... Connecting screw, 20...
...Connecting hole.

Claims (1)

[Scope of utility model registration request] The mouth edge along the opening of the valve box, which is integrally attached to the mounting rubber disc bonded to the rubber boat body, is formed into a thin band-shaped wall edge as appropriate, and a part of the edge is cut off from the base and curved inward to prevent the stop. In addition to forming a rim, the outer periphery of the upper end of the valve body mounted on the valve body is made to protrude like a brim to form a knob rim, and the lower periphery of the knob rim is formed with an engaging groove into which the rim is inserted. Characteristic air valve for rubber boats.