JPH0618880Y2 - Snorkel drain valve protector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention enables quick and large drainage by the movement of the drain valve with a small force while the swimmer is in use, thereby reducing backflow water and reducing the drain valve. The present invention relates to a drain valve protection device for a snorkel equipped with a cap that reduces damage to the snorkel.

[Prior Art] FIG. 5 is a cross-sectional view of a drainage portion of a snorkel according to a conventional example, and FIG. 6 is a cross-sectional view showing a valve shape at the time of drainage.
As shown in FIG. 5 and FIG. 6, the conventional snorkel has a drainage valve 52 attached to a drainage port 50 provided in the lower portion thereof. The drain outlet outside 53 partitioned by the drain valve 50 is surrounded by the drain outlet side wall 51.

Conventionally, there is no end wall that partially covers the drainage port outside 53 at the tip of the drainage port side wall 51, and the drainage port outside 53 is open to the outside as it is.

At the time of drainage, by blowing a breath toward the drainage port 50,
As shown in the figure, the drain valve 52 is deformed, and the water in the snorkel is discharged to the outside through the drain passage 54.

[Problems to be Solved by the Invention] As described above, in the conventional drainage port 50 of the snorkel, there is no special protection device for the drainage valve 52, and the outside drainage port 53 outside the drainage valve 52 is against water pressure. In other words, the drain valve 52 directly receives the water pressure because it is open.

For this reason, firstly, in order to discharge the water accumulated in the snorkel, a force higher than the water pressure is required, so that a strong exhaust is always required at the time of draining, which causes fatigue of the swimmer.

This led to slow drainage and extra oxygen consumption due to deep breathing during diving.

Secondly, as a result of the drainage by the strong force, the water is strongly pushed out from the drainage port 50 through the drainage channel 54 as shown by the arrow in FIG. 6, and the drainage valve 52 is pushed outward strongly and largely. . Therefore, the drain port 50 receives the water pressure directly and receives a large amount of backflow water.

Thirdly, since the movement of the drainage valve 52 is large, the drainage valve 52 is also damaged quickly and frequently.

Therefore, the first object of the present invention is to enable large drainage quickly by the movement of the drain valve having a small force.

Further, the small movement of the drain valve reduces backflow water and also reduces damage to the valve.

[Means for Solving the Problems] A drain valve protection device for a snorkel according to the present invention for achieving the above object has a gap outside a drain valve attached to a drain port provided at a lower portion of the snorkel. In the snorkel in which the cap is fitted to the end of the drainage port in the state, the drainage hole of the cap is formed on both sides of the side wall and the tip of the cap located next to the drainage valve. And

Preferably, the cap tip is close to the drain valve so that when the drain valve is opened during draining, the drain valve abuts the cap tip to limit the opening degree of the drain valve. Position.

[Operation] By fitting the cap configured as described above to the drain port, the drain valve does not receive excessive water pressure.
It can be drained with a light force, and since the drain hole is drilled not only on the tip of the cap but also on the side wall of the cap located next to the drain valve, quick and large drainage is possible with the movement of the valve with a light force. . At that time, water is drained from both drain holes.

In addition, the cap is placed relatively close to the drain valve to limit the movement of the drain valve during drainage, thereby preventing excessive movement of the drain valve, thereby allowing drainage and not allowing backflow. The function of protecting the original function of

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 is a partially broken side view of a snorkel equipped with a drain valve protection device according to an embodiment of the present invention, FIG. 2 is a front view of a cap portion of the drain valve protection device shown in FIG. 1, and FIG. Similarly, FIG. 4 is a sectional view of the drainage port of the snorkel of the embodiment shown in FIG. 1, and FIG. 4 is a sectional view showing the valve shape at the time of draining.

As shown in these drawings, the snorkel 10 is mainly composed of an exhaust pipe and a mouthpiece 11 which are main parts of the snorkel.
And a drain port 12 in the lower part, a drain valve 16 that allows drainage and does not allow water absorption is attached to the outside of the drain port 12, and the drain port 12 covers the drain valve 16 with a perforated cap 14. To fit.

First, the shape of the cap 14 is a generally bottomed cylindrical shape having a cap side wall 18 having the same shape as the outer edge portion of the drainage port 12, and a cap tip end portion 19 forming an end face thereof. The shape is such that the drainage port 12 is slightly extended.

Further, the height of the cap side wall 18, that is, the height is lower than that of the drain port side wall 51 of the conventional example shown in FIGS. 5 and 6, and there is a gap 17 between the cap tip 19 and the drain valve 16. Are in close proximity. That is, when the drain valve 16 is opened during drainage, the outer edge portion of the drain valve 16 contacts the cap tip portion 19 to limit the degree of opening of the drain valve 16. Therefore, even if the drainage valve 16 is drained with a stronger force than necessary during drainage, the tip of the drainage valve 16 contacts the cap tip portion 19 and the drainage valve 16 is prevented from opening more than necessary.

However, in the present invention, the drain valve 16
Need not be close enough to hit the cap tip 19. By providing the cap 14, the water pressure can be reduced, and the tip of the drain valve 16 can be located at the tip of the cap 1.
This is because it does not require a strong exhaust force to hit 9.

The means for fitting the cap 14 to the drainage port 12 may be either snap-fitting inside the snorkel body made of plastic, rubber or the like, or screw-type fitting.

Further, the tip portion 19 of the cap 14 has a plurality of drain holes 1
3b is provided. This drain hole 13b does not have to be a large opening and the overall ratio with the covered closed part does not exceed 5: 5. With this configuration, the discharge hole 13b
It does not matter how many.

Further, in addition to the drain hole 13b in the above-mentioned tip portion 19, a drain hole 13a is formed in the side wall of the cap 18 near the drain valve 16. The planar shape of the drain valve 16 is usually circular according to the outer edge shape of the drain port 12, and drainage is made uniform in the circumferential direction of the circle, but at least two drain holes 13a are formed in the cap side wall 18. It is preferable to install it.

By forming the drain holes 13a and 13b on both sides of the cap tip portion 19 and the cap side wall 18, the water pressure directly received from the outside by the conventional drain valve 52 shown in FIG. 5 can be dispersed.

As a result of the above configuration, the drain hole 13b of the cap tip portion 19
Not only the water is also drained from the drain hole 13a of the cap side wall 18, but the drainage channel 20 is as shown by the arrow in FIG.

[Advantages of the Invention] With the above-described configuration, the present invention has the effects described below.

That is, a large amount of water can be drained quickly by a small movement of the drain valve with a small force. Further, since the movement of the drain valve is small, backflow water can be reduced. Therefore, this excellent effect also reduces the risk to human life during diving.

Furthermore, it is needless to say that attaching the cap itself protects the drain valve, which is the most important part of the snorkel, from the outside, and has the effect of reducing damage due to repeated large movements of the valve.

[Brief description of drawings]

1 is a partially broken side view of a snorkel equipped with a drain valve protection device according to an embodiment of the present invention, FIG. 2 is a front view of a cap portion of the drain valve protection device shown in FIG. 1, and FIG. Similarly, FIG. 4 is a sectional view of the drainage portion of the snorkel of the embodiment of FIG. 1, FIG. 4 is a sectional view showing the valve shape at the time of draining, and FIG.
The figure is a cross-sectional view of the drainage part of the snorkel according to the conventional example,
FIG. 6 is a cross-sectional view showing the valve shape at the time of drainage. 10 ... Snorkel 11 ... Mouthpiece 12 ... Drainage port 13a, 13b ... Drainage hole 14 ... Cap 15 ... Drainage port end 16 ... Drainage valve 17 ... Gap 18 ... Cap side wall 19 ... Cap Tip 20 ... Drainage channel

Claims (2)

[Scope of utility model registration request] 1. A cap (14) having a gap (17) on the outside of a drain valve (16) attached to a drain port (12) provided at the bottom of a snorkel (10). In the snorkel fitted to the end (15) of 12), the drain holes (13a, 13b) of the cap (14) are
The cap (14) located next to the drain valve (16)
A drain valve protection device for a snorkel, which is provided on both sides of a side wall (18) and a tip portion (19) of the. 2. The cap tip portion (19) is configured such that when the drain valve (16) is opened during drainage, the drain valve (16) abuts the cap tip portion (19).
6) to limit the opening degree of the drain valve (1)
6. The drain valve protection device for a snorkel according to claim 1, wherein the drain valve protection device is located close to 6).