TWI634046B - Snorkel - Google Patents

Abstract

The present invention relates to a breathing tube having a mouthpiece portion and a water stopping structure, and the water stopping structure is disposed at an opposite end of the mouthpiece portion, wherein the water stopping structure comprises a tube body and a cover body. The tubular body is provided with at least one venting hole and a first stopping portion at one end thereof; the cover body is provided with an opening and a second stopping portion, and the end of the tubular body is sleeved from the opening in the cover body. When the water stop structure is on the water surface, the water stop structure is in fluid communication with the mouthpiece through the opening and the vent hole; when the water stop structure is below the water surface, the cover body rises upward, the second stop portion and the first stop The contact portion substantially blocks the flow of water entering the opening from the opening into the vent hole of the pipe body.

Description

Breathing tube

The invention relates to a breathing tube used for underwater activities such as diving, snorkeling, etc., in particular, the breathing tube has an innovative water stopping concept, a more stable water stopping effect and a safer water stopping structure in use.

The water stop structure is the most important component in the breathing tube for diving or snorkeling. The operation effect of the water stop structure is related to the quality of the breathing tube, the complexity of the water stop structure, and the reliability and production cost of the product. The water stop structure of commercially available breathing tubes can be roughly divided into two types, which are represented by FIG. 1A and FIG. 1B, respectively.

The conventional water stop structure shown in Fig. 1A is disposed on the breathing tube as a separate component, and a vent hole 111 is formed at the end of the inner portion 110 of the conventional water stop structure 11 to be gas with the nozzle 112 of the breathing tube 1. Connected. The inner portion 110 of the conventional water stopping structure 11 is provided with a floating ball 113 (i.e., a "solid line" floating ball position). When the conventional water stopping structure 11 is buried under the water surface, water flows into the inner portion 110 to make the floating ball 113 upward. Floating against the closed vent hole 111 (i.e., the position of the "dotted line"), water cannot enter the nozzle 112 through the vent hole 111, and the effect of temporarily stopping the water is achieved, so that the user is not caught by the water.

Another conventional water stop structure, as shown in Fig. 1B, does not use a float to stop the water, but instead uses a pivoting valve to stop the water. Further, the conventional water stop structure 12 does not need to form an additional vent hole to connect the nozzle 121 of the breathing tube 1 to the outer cover 130 of the outer cover 13 (ie, the "dotted line" portion), but the conventional water stop structure 12 is directly The pivotable pontoon 122 and the connecting rod valve piece 123 are designed instead, so that the pontoon 122 is pivoted by the water buoyancy to pivot the connecting rod valve piece 123 to close the nozzle 121 to achieve the same temporary water stopping effect as the floating ball. However, in addition to the provision of a pontoon 122, the improved water stop structure 12 requires a separate link valve 123, which not only has a larger number of components, but also increases the complexity and accuracy of the component shape. Help control the cost of production.

What's more, whether using the float ball to stop the water, or the pivoting pontoon and the connecting rod valve to stop the water, the stroke from a venting position to a water stopping position is still too long, when the water is too strong or the dive speed is too fast. It may not be able to cover the vent hole or the nozzle at the same time and leak water. This will cause the user to enter the water in the mouth, and must be technically discharged on the surface of the water, and then the right time to exhale and drain the water, which is uncomfortable and unsafe, for the lack of experience. Those who are more drowning and endanger the danger of life. Especially when snorkeling or deep dive activities, usually the angle of the water surface into the water surface is not exactly perpendicular to the water surface, which will cause the rising buoyancy of the float ball to be offset by the pipe wall, or pivot the pivot of the pontoon. Because the turning power is not fully exerted, the water stopping stroke to reach the nozzle becomes longer, and even if the nozzle is not reached in a very short time, it is stuck halfway, so that the water stop failure is very dangerous, and such a breathing tube is formed. The design bottleneck is still unable to break through.

In view of this, the present invention provides a completely innovative water stop concept, with a more simplified structural component, lower cost, and a more stable and safer breathing tube design, which has never been seen before.

The object of the present invention is to provide a breathing tube which has a water stop structure of innovative water stop concept, and the water stop structure of the invention not only has the advantages of simplifying the structural elements of the breathing tube and reducing the assembly complexity, but also can improve For a long time, the snorkel has a major shortcoming of "not able to exhale in the water", so the water stop effect is more stable and safer to use.

In order to achieve the above object, the present invention provides a breathing tube having a mouthpiece portion and a water stopping structure, the water stopping structure being disposed at an opposite end of the mouthpiece portion, wherein the water stopping structure comprises a tube body and a cover body . The tube body is provided with at least one venting opening and a first stopping portion at one end thereof; the cover body is provided with an opening and a second stopping portion, and the end of the tubular body is sleeved from the opening in the cover body. When the water stop structure is on the water surface, the water stop structure is in fluid communication with the mouthpiece portion through the opening and the vent hole; when the water stop structure is below the water surface, the cover body rises upward, the second The stopping portion is in contact with the first stopping portion to substantially block the water entering through the opening from flowing into the vent hole of the tubular body.

In an embodiment, the end of the tube body and the cover body are allowed to rotate relative to each other, and the end portion of the tube body has a first central axis, the cover body has a cylindrical shape and has a second central axis, the first A central axis and the second central axis can be freely inclined within an angle of less than 45 degrees.

In an embodiment, the first blocking portion is an outwardly protruding surface that protrudes radially outward from the tubular body, and the second blocking portion is a protruding portion located on an inner wall surface of the cover body. And having a cavity for filling the foaming material, when the cover body is lifted upward, a lower protruding surface of the protruding surface forms a waterproof contact with the flange on one of the protruding portions.

In an embodiment, the first stopping portion is an outward protruding surface, and protrudes radially outward from the tubular body, and the second stopping portion is an outer protruding portion located on an inner wall surface of the cover body. a plate, wherein the lower protruding surface of the protruding surface forms a waterproof contact with one end of the outer protruding baffle when the cover is lifted upward.

In one embodiment, the first blocking portion is a concave surface extending radially inward from the tubular body, and the second stopping portion is an outer protruding plate located on an inner wall surface of the cover body. When the cover is lifted upward, a concave surface on one of the concave surfaces forms a waterproof contact with one end of the outer protruding baffle.

In one embodiment, the first blocking portion is a concave surface extending radially inward from the tubular body, and the second blocking portion is an inner concave portion extending inwardly toward an inner wall of the cover body. When the cover is lifted upward, a concave surface on one of the concave surfaces forms a waterproof contact with a concave edge on one of the concave portions.

In one embodiment, the first blocking portion is a funnel-shaped surface, and is located above the venting hole and communicates with the venting hole, and the second stopping portion is a cylinder coaxial with the second central axis. Having a convex portion at a front end thereof, the cylindrical body is located in the tubular body and the funnel-shaped surface, and the convex portion is located below the funnel-shaped surface, and when the cover body is lifted upward, the convex portion of the cylindrical body is The vent of the tube forms a waterproof contact.

The above objects, technical features, and advantages will be more apparent from the following description.

The description of the embodiments below and the accompanying drawings are only for the purpose of illustrating the invention, and are not intended to limit the invention, and in the following embodiments and figures, elements that are not directly related to the present invention have been omitted. It is not shown; and the dimensional relationship between the components in the drawings is only for easy understanding and is not intended to limit the actual ratio.

"Fluid communication" as used hereinafter means "gas communication", where "water surface W" or "water surface W" means that the water stop structure is in a venting position and a gas communication state, said "water surface W" "Under" or "Under surface W" means that the water stop structure is in a water stop position and a non-gas connection state.

First, the breathing tube of the present invention is as shown in Figs. 2A-2B, and one end of the breathing tube 2 is provided with a mouthpiece portion 23, and the opposite end thereof is provided with the water stopping structure 20 of the present invention, and is generally known to those skilled in the art. It is known that an exhaust valve 24 (Purge Valve) is disposed adjacent to the side of the mouthpiece portion 23. 2A is a view of one of the breathing tubes, the breathing tube 2 is detachably coupled to the water stopping structure 20 and the mouthpiece portion 23 through the hose portion 25, and the hose portion 25 can be bent and adjusted at an arbitrary length to Provide users with more flexibility in use. Fig. 2B is a view of another type of breathing tube, omitting the engagement of the above-described hose, the water stopping structure 20 directly engaging the mouthpiece portion 23, or both.

In particular, the water stop structure applied by the breathing tube of the present invention mainly adopts a structural combination of a tube body and a tube body to achieve an effective and rapid water stopping effect. Specifically, the water stopping structure is provided with at least one vent hole and a first stopping portion at a pipe body end portion through the pipe body; the cylindrical cover body has an opening and a second stopping portion, the pipe body The end is sleeved from the opening in the cover body. When the water stop structure is located above the water surface, the water stop structure is in fluid communication with the mouthpiece through the opening and the vent hole; when the water stop structure is below the water surface, the cover body rises upward, the second stop portion and the first The stopper contacts, substantially blocking the flow of water entering from the opening to the vent hole of the pipe body.

Since the cover body is subjected to the buoyancy of water, it is preferable to use the material having a lower density than water to form the cover itself. However, if the cover body is made of a material having a density higher than that of water, a cavity structure can be added through the inside of the cover body, and a filler having a density lower than that of water can be added to provide a buoyancy effect of the cover body. The cavity structure of the cover body can be described in the following first embodiment, but the cavity structure is not limited by the example of the first embodiment, and the person skilled in the art can consider the cavity structure of the cover body partially or The integral cover wall itself is made in a hollow configuration rather than a solid construction.

As shown in FIG. 2C, the water stop structure 20 of the present invention comprises a tubular body 21 and a cover 22, the tubular body end portion 21a is sleeved in the cover body 22, and the tubular body end portion 21a has a first center. The shaft Φ1 has a second central axis Φ2. 2c-1 illustrates a relative rotational rotation θ between the tubular body end 21a and the cover 22; FIG. 2c-2 illustrates that the first central axis Φ1 and the second central axis Φ2 can be freely within an angle α of less than 45 degrees. tilt.

Regarding the internal structure of the cover body and the pipe body and the manner of cooperation thereof, since there is more than one embodiment, the following description will be made through different embodiments and corresponding drawings.

In the first embodiment, the internal structure of the tube body and the cover body and the manner of cooperation thereof are mainly described through the 3A-3D drawings, and the other derivative forms are illustrated in the 3E-3H figure.

As shown in FIG. 3A of the first embodiment, the tubular body 31 of the water stopping structure 30 is provided with at least one vent hole 310 and a first stopping portion 311 at a tubular body end portion 31a thereof; and a cylindrical lid body 32 An opening 320 and a second stopping portion 322 are provided, and the end portion 31a of the tubular body is sleeved from the opening 320 in the cover 32. In other words, the vent hole 310 of the tubular body end portion 31a and the first stopper portion 311 are located in the lid body 32.

Fig. 3B is a view showing the state of gas flow when the water stop structure 30 is positioned on the water surface W. At this time, the water stopping structure 30 is located on the water surface W, and the first stopping portion 311 and the second stopping portion 322 are not in contact with each other, so that the water stopping structure 30 is in the venting position, that is, the water stopping structure can pass through the opening and the vent hole to bite The mouth forms a fluid communication. Specifically, the air A1 flows in from the opening 320 and passes through the first stopper portion 311 and the second stopper portion 322 in the upper half of the lid body 32 (referred to as "air chamber 321"), and the vent hole 310 can be self-ventilated. 321 obtains air A1 to be supplied to the mouthpiece portion 23 (as shown in FIG. 2A-2B); oppositely, the exhaust gas A2 from the mouthpiece portion 23 is transferred from the vent hole 310 to the air chamber 321 and passes through the first stopper portion 311 and the first portion The second stopper portion 322 is discharged outside the opening 320.

The 3C-3D diagram illustrates the manner in which the water stop structure 30 is located below the water surface W. When the cover body 32 receives a buoyancy force F, the cover body 32 rises upward relative to the pipe body 31 in the direction of the water surface W, and the first stopping portion 311 is in contact with the second stopping portion 322 to substantially block the water entering through the opening 320. The vent hole 310 flows to the tube body 31. That is, although the water flows into the lower half of the cover 32 from the opening 320, the first stop 311 and the second stop 322 form a waterproof contact to block water from entering the upper half of the cover 32 (referred to as the upper half). The "air chamber 321") is such that the water does not flow into the vent hole 310 of the pipe body 31. As described herein, the 3D drawing only shows the waterproof contact between the pipe body of different dive angles and the cover body which rises upward, and the related structural configuration is the same as that of FIG. 3C.

In the first embodiment, the specific structure of the first stopper portion of the tubular body, the vent hole, and the specific structure of the second stopper portion of the tubular body are described in detail below.

3A-3E, in the first embodiment, the first stopping portion 311 of the tubular body 31 is an outwardly protruding surface 312 protruding radially outward from the tubular body 31; that is, the protruding surface 312 protrudes. In the tube body 31. However, the outer shape of the outer protrusion surface 312 is not limited to the 3A-3E figure, and the outer surface 312 of the protrusion surface 312 may be as shown in FIG. 3F, and its outer shape is a spherical body 3121 (FIG. 3f-1). A rectangular body 3122 (Fig. 3f-2) or a tapered body 3123 (Fig. 3f-3).

In the first embodiment, the vent holes have three positional patterns, wherein the first positional state is as shown in Figs. 3A-3D, and the other is the venting hole 310 which is formed on one of the top faces 313 of the tubular body end 31a. The second and third positional patterns are as shown in FIG. 3E, and the plurality of vent holes 310e are disposed around the first stopping portion 311 of the protruding surface 312 (refer to FIG. 3e-1); or the third positional state A plurality of vent holes 310f are provided around the end portion 31a of the tubular body above the first stopper portion 311 of the outwardly protruding surface 312 (refer to Fig. 3e-2). Moreover, the second and third positional aspects can be combined, so that the vent hole 310e and the vent hole 310f are disposed on the pipe wall of the pipe body, thereby increasing the intake/exhaust amount; it is a common knowledge in the technical field. The person can easily think about it, so the schema is omitted.

However, in the first venting position of the first embodiment, the cover 32 on the water surface W is dropped by its own gravity so that an inner top surface 324 directly covers the vent hole 310 on the top surface 313 of the tubular body 21. In the above, the air cannot flow smoothly into the pipe body 31. To solve this problem, as shown in FIG. 3A, the inner top surface 324 of the cover body 32 is provided with at least two baffles 326. When the cover body 32 is located above the water surface W, at least two baffles 326 and tubes of the cover body 32 are provided. The top surface 313 of the body end portion 31a is in contact with each other to maintain a ventilation distance h1. As described herein, since the drawing only shows the cross-sectional structure of the cover body and the pipe body, only one baffle 326 is shown in the drawing.

In contrast, the second and third vent position patterns shown in Fig. 3E are obtained from the side wall of the tube body 31 because the vent holes 310e, 310f. Therefore, when the cover 32 is above the water surface W, the vent holes 310e, 310f are not affected by the inner top surface 324 of the cover 32 at all, and thus it is not necessary to particularly form a baffle. It is to be understood that those skilled in the art can deduce that the venting holes 310e located around the protruding surface 312 can form one or more venting holes as required by the design, as long as sufficient ventilation is obtained.

Furthermore, as can be appreciated by those of ordinary skill in the art, the tubular shape of the first embodiment can be further derivatized as 3F and 3G, in combination with the external shape of the outwardly protruding surface and the different positional aspects of the vent holes. The appearance of the figure. As shown in FIG. 3F, the shape of the first blocking portion in the shape of the protruding surface 312 may be a spherical body 3121 (FIG. 3f-1), a rectangular body 3122 (FIG. 3f-2) or a tapered body 3123. (Fig. 3f-3), and the vent hole 310 of the tube body 31 is provided on the top surface 313 at the end portion 31a of the tube body. On the other hand, as shown in FIG. 3G, the shape of the protruding surface 312 can likewise be a spherical body 3121 (FIG. 3g-1), a rectangular body 3122 (FIG. 3g-2) or a tapered surface 3123. (Fig. 3g-3), but the vent 310e is provided around the protrusion surface 312.

Regarding the second stopper portion 322 of the first embodiment, there are two structural aspects. The first structural aspect is as shown in FIGS. 3A-3D. The second stopping portion 322 is a protruding portion 323 which is located on an inner wall surface 325 of the cover body 32 and has a cavity 323P. Wherein, when the material of the cover body 32 is selected to have a density greater than that of water, the cavity 323P can be used to fill the foam material having a density lower than that of water to provide a floating effect of the cover body; when the material of the cover body 32 is selected to have a density ratio When the water is small, the foam 231P can be selectively filled in the cavity 323P to enhance the effect of the lid lifting. Therefore, as shown in FIG. 3C, when the cover 32 is lifted upward, the water stop structure 30 is transmitted through the lower projection surface 312a of the outer surface 312 of the tubular body 31 and the flange 323a of one of the projections 323 of the cover 32. Form a waterproof contact.

Regarding the second structural aspect of the second stopping portion 322, as shown in FIG. 3H, the second stopping portion 322 is an outer protruding baffle 327 which is located on the inner wall surface 325 of the cover body 32. When the 32 is raised upward, the water stopping structure 30 is formed in a waterproof contact with the one end 327a of the outer flap 327 of the cover 32 through the lower protruding surface 312a of the outer surface 312 of the tubular body 31. It should be noted that, in addition to the straight cylindrical structure shown in FIG. 3A-3F, the cylindrical cover 32 has a flared shape as shown in FIG. 3H, and a spherical shape. State (not shown).

The waterproof contact structure between the first stop portion and the second stop portion can be further extended from the other two embodiments of the first embodiment. Hereinafter, the second embodiment and the third embodiment will be specifically described.

As shown in FIG. 4A of the second embodiment, the tubular body 41 of the water stop structure 40 is provided with at least one vent hole 410 and a first stopper portion 411 at a tubular body end portion 41a thereof; a cylindrical lid body 42 The first end portion 420 and the second end portion 422 are sleeved from the opening 420 in the cover 42. In other words, the vent hole 410 of the tubular body end portion 41a and the first stopper portion 411 are located in the lid body 42.

In the state shown in Fig. 4A, when the water structure 40 is located on the water surface W, the gas flows. At this time, the water stopping structure 40 is located on the water surface W, and the first stopping portion 411 and the second stopping portion 422 are not in contact with each other, so that the water stopping structure 40 is in the venting position, that is, the water stopping structure can pass through the opening and the vent hole to bite The mouth forms a fluid communication. Those skilled in the art can easily refer to the path of gas circulation of the water stop structure 40 of the second embodiment with reference to the description of the first embodiment and FIG. 3B, and therefore will not be described again.

Regarding the water stopping operation mode when the water stopping structure 40 of the second embodiment is located under the water surface W, as shown in FIG. 4B, when the cover body 42 receives a buoyancy force F, the cover body 42 faces the water surface W with respect to the pipe body 41. The direction is raised, and the first stopper portion 411 comes into contact with the second stopper portion 422, and substantially blocks the water entering from the opening 420 from flowing into the vent hole 410 of the pipe body 41. That is, although the water flows into the lower half of the cover 42 from the opening 420, the first stop 411 and the second stop 422 form a waterproof contact to block the water from entering the upper half of the cover 42 (referred to as the upper half). The "air chamber 421") is such that the water does not flow into the vent hole 410 of the pipe body 41. Although the second embodiment does not have a schematic view of the pipe body having different dive angles, it can be easily considered by referring to the 3D figure of the first embodiment, and the drawings are omitted.

In the second embodiment, the specific structure of the first stopper portion of the tubular body, the vent hole, and the specific structure of the second stopper portion of the tubular body are described in detail below.

Regarding the first stopper of the second embodiment, there is only one structural aspect. Referring to FIG. 4A, in the second embodiment, the first stop portion 411 of the tubular body 41 is a concave surface 412 extending radially inward from the tubular body 41, that is, the concave surface 412 is radially oriented toward the tubular body 41. Concave.

In the second embodiment, the vent has two positional orientations. In the first positional aspect, as shown in Figs. 4A-4B, a venting opening 410 is formed in a top surface 413 of the tubular body end portion 41a. In the second positional state, as shown in FIG. 4C, a plurality of vent holes 410e are provided around the first end portion 411 of the tubular body portion 41a above the concave surface 412.

Figure 4D is a simulation of the unbaffled cover 42 on the water surface, whether it is the first vent position (i.e., Figure 4d-1) or the second vent position (i.e., Figure 4d-2). If the cover 42 does not have the baffle plate, the gravity of the cover 42 itself may cause the second stop portion 422 to contact the first stop portion 411 of the pipe body 41 to close the air flow passage, thereby hindering gas circulation. Go to the air chamber 421.

Therefore, the vent hole of the second embodiment is required to belong to the first positional state (ie, FIG. 4A-4B) or the second positional state (ie, FIG. 4C), and is required to be in one of the cover bodies 42. The top surface 424 is provided with at least two baffles 426. When the cover 42 is located above the water surface W, at least two baffles 426 of the cover 42 and the top surface 413 of the tube end 41a are in contact with each other, so that the second stop portion 422 of the cover body and the first body 41 are The air passages can be held between the stoppers 411 to allow air to enter the air chamber 421 freely.

Regarding the second stopper of the second embodiment, there is only one structural aspect. As shown in FIG. 4A, the second stopper portion 422 is an outer protrusion baffle 427 which is located on an inner wall surface 425 of the cover body 42. As shown in FIG. 4B, when the cover 41 is lifted upward, the water stopping structure 40 is formed to be waterproof by the concave surface 412a of one of the concave surfaces 412 of the tubular body 41 and the distal end 427a of the outer projection 427 of the cover 42. contact. It is to be noted that the outer projection baffle 427 of the second embodiment has the same structural features as the outer projection baffle 327 of the first embodiment.

As shown in FIG. 5A of the third embodiment, the tubular body 51 of the water stopping structure 50 is provided with at least one vent hole 510 and a first stopping portion 511 at one end portion 51a of the tubular body; a cylindrical cover 52 is provided. The first end portion 520 and the second end portion 522 are sleeved from the opening 520 in the cover 52. In other words, the vent hole 510 of the tubular body end portion 51a and the first stopper portion 511 are located in the lid body 52.

Fig. 5A also shows the state in which the gas flows when the water structure 50 is on the water surface W. At this time, the water stopping structure 50 is located on the water surface W, and the first stopping portion 511 and the second stopping portion 522 are not in contact with each other, so that the water stopping structure 50 is in the venting position, that is, the water stopping structure can penetrate the opening and the vent hole to bite The mouth forms a fluid communication. Those skilled in the art can refer to the description of the first embodiment and FIG. 3B thereof, and easily refer to the path of the gas flow of the water stop structure 50 of the third embodiment, and therefore will not be described again.

Regarding the water stopping operation mode when the water stopping structure 50 of the third embodiment is located under the water surface W, as shown in FIG. 5B, when the cover body 52 receives a buoyancy force F, the cover body 52 faces the water surface W with respect to the pipe body 51. The direction is raised, and the first stopper portion 511 comes into contact with the second stopper portion 522, and substantially blocks the water entering from the opening 520 from flowing into the vent hole 510 of the pipe body 51. That is, although the water flows into the lower half of the cover 52 from the opening 520, the first stop 511 and the second stop 522 form a waterproof contact to block water from entering the upper half of the cover 52 (referred to as the upper half). The "air chamber 521") is such that the water does not flow into the vent hole 510 of the pipe body 51. Although the third embodiment does not have a schematic view of the pipe body of different dive angles, it can be easily considered by referring to the 3D figure of the first embodiment, and the drawings are omitted.

In the third embodiment, the specific structure of the first stopper portion of the tubular body, the vent hole, and the specific structure of the second stopper portion of the tubular body are described in detail below.

The first stopper of the third embodiment is like the second embodiment, and has only one structural aspect. Referring to FIG. 5A, the first stop portion 511 of the third embodiment is a concave surface 512 extending radially inward from the tubular body 512, that is, the concave surface 512 is radially concave toward the tubular body 51. Again, the concave surface 512 of the third embodiment has the same configuration as the concave surface 412 of the second embodiment.

The vent hole of the third embodiment has two positional views as in the second embodiment. The first positional pattern is as shown in Figs. 5A-5B, and a vent 510 is provided in a top surface 513 of the tube end 51a. The second positional aspect is that a plurality of vent holes are disposed around the end portion 51a of the tubular body above the first stopping portion 511 of the concave surface 512. The position of the venting hole can be referred to the fourth embodiment of the second embodiment. This omits the schema.

In addition, the vent hole of the third embodiment belongs to the first positional state or the second positional state. The cover 52 of the third embodiment also needs to be provided with at least two baffles 526 on an inner top surface 524 thereof. The through air passage can be maintained between the second stopping portion 522 of the cover 52 and the first stopping portion 511 of the tubular body 51. The reason why the baffle 526 is disposed is the same as that of the second embodiment, so the third embodiment will not be described again.

Regarding the second stopper of the third embodiment, there is only one structural aspect. As shown in FIG. 5A, the second stopper portion 522 is an inner concave portion 523 that extends inward toward the inner wall surface 525 of the lid body 52. As shown in FIG. 5B, when the cover 52 is lifted upward, the water stop structure 50 is formed through the concave surface 512a of one of the concave surfaces 512 of the tubular body 51 and the concave edge 523a of one of the concave portions 523 of the cover 52. Waterproof contact.

In the first to third embodiments described above, the first stopper portion and the second stopper portion are in waterproof contact, so that the upper half of the lid body (referred to as "air chamber") is sealed, and the opening of the lid body faces downward. According to the principle of physics, the air stays in the air chamber and the water cannot enter. Even if the water pressure increases by one atmosphere every ten meters, the volume of the air will be reduced by half, but the vent hole of the pipe body is located in the air chamber of the cover body. The vent height is still above 90% of the whole body of the cover, so when the water depth is ten meters, although the air has been compressed by half, the water still does not reach the height of the breathing tube mouth, so the waterproof effect is achieved.

Furthermore, in the first, second or third embodiment, regardless of the dive angle and speed, the water stop structure can pass through the buoyancy of the cover body, and the cover body is in waterproof contact with the inside of the pipe body to achieve the essence. The purpose of blocking water. In particular, the cover body is buoyant and will always rise in a vertical upward direction, and the angle of inclination of the cover relative to the tubular body may be between 0 and 45 degrees. Unless it is an excessively dangerous pipe dive angle, the water stop structure of the first, second or third embodiment will not easily relieve the waterproof between the pipe body and the cover body due to excessive or swaying of the pipe body dive angle. contact. As shown in FIG. 3H, FIG. 3h-1 is that the angle α1 between the first central axis Φ1 of the tubular body 31 and the second central axis Φ2 of the cover 32 is 35 degrees, as shown in FIG. 3h-2. The angle α2 between the inclination of a central axis Φ1 and the second central axis Φ2 is 45 degrees.

The first, second and third embodiments are all exemplified by a first stop and a second stop, but are not limited by the current drawings. In actuality, in order to enhance the sealing effect of the waterproof contact, two or more first stoppers and second stoppers may be added to the lid body and the tubular body.

In addition to the waterproof contact of the first stop portion and the second stop portion described in the first, second and third embodiments, there is another way of waterproof contact, which is illustrated in the fourth embodiment.

As shown in FIG. 6A of the fourth embodiment, the tubular body 61 of the water stopping structure 60 is provided with a vent hole 610 and a first stopping portion 611 at a tubular body end portion 61a thereof; The opening 620 and the second stopping portion 622 are sleeved from the opening 620 in the cover 62. In other words, the vent hole 610 of the pipe body 61 and the first stopper portion 611 are located in the cover body 62.

Fig. 6B is a view showing the state of gas flow when the water stop structure 60 is placed on the water surface W. At this time, the water stopping structure 60 is located on the water surface W. At this time, the first stopping portion 611 and the second stopping portion 622 are not in contact with each other, so that the water stopping structure 60 is in the venting position, that is, the water stopping structure can pass through the opening and the vent hole. Forming fluid communication with the mouthpiece. Specifically, the air B1 flows into the cover body 62 from the opening 620, and is supplied to the mouthpiece portion 23 through the first stopper portion 611, the second stopper portion 622, and the vent hole 610 (as shown in FIG. 2A-2B). In contrast, the exhaust gas B2 from the mouthpiece portion 23 is discharged outside the opening 620 through the vent hole 610, the second stopper portion 622, and the first stopper portion 611.

Figure 6C is a diagram showing the manner in which the water stop structure 60 is placed under the water surface W. When the cover body 62 receives the buoyancy force F, the cover body 62 rises upward relative to the pipe body 61 toward the water surface W, so that the second stopping portion 622 forms a waterproof contact with the first stopping portion 611, and the substantial blocking is entered by the opening 620. The water flows into the vent hole 610 of the pipe body 61. That is, although the water flows into the lid body 62 from the opening 620, the first stopper portion 611 and the second stopper portion 622 form a waterproof contact to block the water from entering the vent hole 610 of the tubular body 61. As described herein, the 6D is a tube body showing different dive angles and directions and a cover body that rises upward.

In the fourth embodiment, the first stopper of the tubular body, the specific structure of the vent hole, and the specific structure of the second stopper are described in detail below.

In the fourth embodiment, the first stopper has only one structural aspect. As shown in FIG. 6A, the first stop portion 611 is a funnel-shaped surface 612 located above the vent 610 and communicating with the vent 610, wherein one of the funnel-shaped surfaces 612 has a diameter 612a substantially larger than the vent 610. As described above, since the funnel-shaped surface 612 and the vent hole 610 communicate with each other, the inhaled gas system enters the vent hole 610 from the caliper 612a, and the discharged gas system is transported from the vent hole 610 to the caliper 612a.

In the fourth embodiment, the second stopper has only one structural aspect. As shown in FIG. 6A, the second stopping portion 622 is a column 623 coaxial with the second central axis Φ2' of the cover body, and has a convex portion 623b at a front end 623a thereof, wherein the column 623 and The convex portion 623b is located inside the tubular body 61 and the funnel-shaped surface 612, and the convex portion 623a is located below the vent hole 610. In addition, since the convex portion 623b is relatively larger in size than the vent hole 610, the convex portion 623b of the cover body 62 is not easily separated from the vent hole 610 and the funnel-shaped surface 612 which are communicated in the tube body 61. Here, the convex portion 623b shown in FIGS. 6A-6D may be a curved curved surface such as an elliptical shape in addition to a perfect circular shape to form a waterproof contact with the vent hole.

Referring to FIG. 6C, the method of waterproof contact between the first stopping portion and the second stopping portion is transmitted upward through the second stopping portion 622 of the column 623, so that the convex portion 623b of the column 623 abuts against the funnel. A vent 610 at a position below the first stop portion 611 of the surface 612. That is, the fluid contact of the vent hole 610 is directly contacted by the convex portion 623b and is balanced with the external water pressure, thereby forming a waterproof effect.

As mentioned in the above embodiments, the waterproof structure 60 is on the water surface, and the air that blocks the vent hole 610 is circulated in order to prevent the cover body 62 from falling by gravity so that the inner top surface 624 covers the diameter 612a of the pipe body 61. In the fourth embodiment, as shown in FIG. 6A, at least two baffles 626 are also required to be spaced apart from the top surface 624 of one of the covers 62. Therefore, when the cover 62 is above the water surface, at least two of the cover bodies 62 are provided. The stop 626 is adapted to abut against the aperture 612a of the funnel-shaped surface 612 such that the inner top surface 624 of the cover 62 maintains a venting distance h2 with the aperture 612a, ensuring that the vent 610 is capable of obtaining sufficient gas flow from the aperture 612a.

The fourth embodiment is the same as the first, second and third embodiments. Regardless of the dive angle and the speed of the breathing tube, the water stopping structure can pass through the buoyancy of the cover body, and the cover body is in waterproof contact with the inside of the tube body to achieve substantial resistance. The purpose of water. As shown in FIG. 6D, the cover body 62 of the fourth embodiment is floated upward by the buoyancy force F in a vertical direction, and the second central axis Φ2' of the cover body 62 is generated with respect to the first central axis Φ1' of the tubular body 61. The angle of inclination α3 can also be between 0 and 45 degrees. Unless it is an excessively dangerous pipe descent angle, the water stop structure of the fourth embodiment does not easily release the waterproof contact between the cover body and the pipe body due to the pipe body dive angle being too deep or swaying. 6d-1 and 6d-2 respectively illustrate the different dive angle directions of the pipe body, and the convex portion of the cover body is still in close contact with the vent hole of the pipe body.

In addition, in addition to the first to fourth embodiments, the present invention can form a soft and elastic connecting device in the cover body. Referring to FIG. 3D, the connecting device L located in the cover body 32 is used for elastically combining the cover body 32 and the tube body 31. On the one hand, the cover body 32 is not detached, and on the other hand, when the cover body 32 is actuated, More smooth and flexible. In addition, the cylindrical shape of the cover body can be hard, soft or encapsulated in various materials, and can also be injection, extrusion, and blow molding.

In summary, the tube body and the cover body of the first to fourth embodiments do not require the use of a link valve piece, a swing arm or a buoy type of a conventional waterproof structure, and an element requiring precision. That is, the water stop structure of the present invention only uses the principle of water pressure to raise the air, pushes the cover body to rise vertically upward toward the water surface, and then transmits the waterproof contact of the special internal structure between the cover body and the pipe body, so that the original fluid communication is achieved. The state instantly becomes a completely closed state. Therefore, regardless of the change in the angle of the pipe body during dive, the pipe body and the cover body of the present invention always maintain a tightly fitting waterproof contact, so that a completely waterproof effect can be achieved.

In addition to the above-described advantages of simplifying structural components and reducing assembly complexity. On the other hand, it has been experimentally confirmed that the water stop structure of the present invention is more capable of improving the long-term disadvantage of the snorkel "unable to discharge water in the water". Specifically, as shown in FIG. 2D, when the breathing tube 2 is forced out in the water, the mouthpiece portion 23 discharges the gas a' while flowing toward the water stopping structure 20 and the exhaust valve 24, and the lid body 22 is received. The original buoyancy F floats outside and is pushed by the gas a', so that the tubular body 21 and the lid 22 remain in a watertight contact. The gas a' cannot be discharged from the lid body 22, so that the gas a' flows in the opposite direction toward the exhaust valve 24, so that the gas a' forces the water w' to be discharged from the exhaust valve 24.

The above embodiments are only used to exemplify the embodiments of the present invention, and to illustrate the technical features of the present invention, and are not intended to limit the scope of protection of the present invention. Any changes or equivalents that can be easily made by those skilled in the art are within the scope of the invention. The scope of the invention should be determined by the scope of the claims.

1 breathing tube 11, 12 conventional water stop structure 110 internal 111 vent hole 112 nozzle 113 float ball 121 nozzle 122 float 123 connecting rod valve 13 outer cover 130 outer cover 2 breathing tube 20 water stop structure 21 tube body 21a tube body End 22 cover 23 mouthpiece 24 exhaust valve 25 hose portion 30, 40, 50, 60 water stop structure 31, 41, 51, 61 body 31a, 41a, 51a, 61a body end 310, 310e 310f, 410, 410e, 510, 610 vents 311, 411, 511, 611 first stop portion 312 outer protrusion surface 312a lower protrusion surface 3121 spherical body 3122 rectangular body 3123 tapered body 313, 413, 513, 613 top surface 32, 42, 52, 62 cover 320, 420, 520, 620 opening 321, 421, 521, 621 air chamber 322, 422, 522, 622 second stop 323 protrusion 323P cavity 323a Edges 324, 424, 524, 624 inner top surfaces 325, 425, 525 inner wall surfaces 326, 426, 526, 626 baffles 327, 4 27 Outer baffle 327a, 427a End 412, 512 Concave surface 412a, 512a Upper concave surface 523 Inner concave portion 523a Upper concave edge 612 Funnel-shaped surface 612a Caliber 623 Column 623a Front end 623b Convex A1, B1 Inflow air A2, B2 Discharge Exhaust gas a' Air F Buoyancy h1, h2 Ventilation distance L Joint device W Water surface w' Water α, α1, α2, α3 Angle Φ1, Φ1' First central axis Φ2, Φ2' Second central axis θ Rotation

Figure 1A is a schematic cross-sectional view of a conventional water stop structure. Figure 1B is a perspective view of another conventional water stop structure. Fig. 2A is a view showing a breathing tube aspect and a water stopping structure to which the present invention is applied. Figure 2B illustrates another breathing tube aspect and its use of the water stop structure of the present invention. Fig. 2C is a view showing the manner of operation between the tube body and the lid body in the water stop structure of the present invention. Fig. 2D is a view showing the operation mode of the snorkel in the water using the snorkel of the water stop structure of the present invention. Fig. 3A is a view showing the water stop structure of the first embodiment of the present invention on the water surface and its internal structure. Fig. 3B is a view showing the first vent hole positional state of the first embodiment and its gas flow path. Figure 3C illustrates the water stop structure of the first embodiment being located below the surface of the water and the upward contact of the upwardly rising lid with the tubular body. Fig. 3D is a view showing the first embodiment in which the dive inclined pipe body is in waterproof contact with the upward floating cover. Fig. 3E is a view showing the second and three vent hole position patterns and their gas flow paths in the first embodiment. Fig. 3F is a view showing the first venting portion of the first embodiment in a different shape state and matching the first venting position of the tubular body in the first embodiment. Fig. 3G is a view showing the first damper portion having a different shape state in the first embodiment and matching the second vent hole position of the tubular body. FIG. 3H is a view showing the first embodiment in which the lower portion of the cover body has a flared shape and the waterproof contact between the tube body and the cover body at different dive angles. Fig. 4A is a view showing the water stop structure of the second embodiment of the present invention on the water surface and its internal structure. Figure 4B illustrates the water-repellent structure of the second embodiment being located below the surface of the water and the upward contact of the upwardly rising lid with the tubular body. Fig. 4C is a view showing a second vent hole positional view of the pipe body of the second embodiment. Fig. 4D is a diagram showing the fluid communication in the second embodiment in which the cover on the water surface is unobstructed to hinder the positional state of the first and second vent holes. Fig. 5A is a view showing the water stop structure of the third embodiment of the present invention on the water surface and its internal structure. Fig. 5B is a view showing the water stop structure of the third embodiment being located below the water surface and the upward contact of the upwardly rising lid body with the tube body. Fig. 6A is a view showing the water stop structure of the fourth embodiment of the present invention on the water surface and its internal structure. Fig. 6B is a view showing the water stop structure of the fourth embodiment on the water surface and the gas flow path. Fig. 6C is a view showing the waterproof structure of the fourth embodiment located below the water surface and the upward contact of the upwardly rising lid body with the tube body. Fig. 6D is a view showing the waterproof contact between the pipe body of different dive angles and directions and the upward floating cover body in the fourth embodiment.

Claims (17)

A breathing tube having a mouthpiece portion and a water stopping structure, the water stopping structure being disposed at an opposite end of the mouthpiece portion, wherein the water stopping structure comprises: a tube body having at least one end portion of the tube body a venting hole and a first stopping portion; and a cover body having an opening and a second stopping portion, and at least two baffles are arranged on the top surface of one of the cover bodies, and the end of the pipe body is The water blocking structure is in fluid communication with the mouthpiece portion when the water stopping structure is on the water surface, and the water stopping structure is on the water surface when the water stopping structure is on the water surface In the lower case, the cover body is lifted upward, and the second stopping portion is in contact with the first stopping portion to substantially block the water entering through the opening from flowing into the vent hole of the pipe body. The breathing tube of claim 1, wherein the end of the tube body and the cover body are allowed to rotate relative to each other, and the end portion of the tube body has a first central axis, the cover body is cylindrical and has a second The central axis, the first central axis and the second central axis can be freely inclined within an angle of less than 45 degrees. The breathing tube of claim 2, wherein the first blocking portion is an outwardly projecting surface projecting radially outward from the tubular body. The breathing tube of claim 3, wherein the protruding surface is more of a spherical body, a rectangular body or a tapered body. The breathing tube according to claim 3 or 4, wherein the second stopping portion is a protruding portion located on an inner wall surface of the cover body and having a cavity for filling the foaming material, when the cover body is upward When raised, one of the lower protruding surfaces forms a waterproof contact with the upper flange of one of the projections. The breathing tube of claim 3 or 4, wherein the second blocking portion is an outer protruding baffle on an inner wall surface of the cover body, and the outer protruding surface is raised when the cover body is lifted upward The lower projection forms a waterproof contact with one of the ends of the outer flap. The breathing tube of claim 3 or 4, wherein a top surface of one end of the tubular body has a venting opening, the top surface of the tubular body end and the cover when the water stopping structure is on the water surface The baffle of the body is in contact. A breathing tube according to claim 3 or 4, wherein a plurality of venting holes are provided around the outer protruding surface and/or around the end of the tubular body above the outer protruding surface. The breathing tube of claim 2, wherein the first blocking portion is a concave surface extending radially inward from the tubular body, the second blocking portion being located on an inner wall surface of the cover body An outer protruding baffle, the concave surface of one of the concave surfaces forms a waterproof contact with one end of the outer protruding baffle when the cover is lifted upward. The breathing tube according to claim 9, wherein a top surface of one end of the tubular body has a venting hole, and when the water stopping structure is on the water surface, the top surface of the end portion of the tubular body and the cover body The baffle is in contact. The breathing tube of claim 9, wherein a plurality of vent holes are disposed around the end of the tubular body above the concave surface, and when the water stopping structure is on the water surface, one of the top surfaces of the tubular body end Contacting the baffle of the cover. The breathing tube of claim 2, wherein the first blocking portion is a concave surface extending radially inwardly from the tubular body, the second blocking portion facing inwardly toward an inner wall of the cover body Extending an inner recess, the concave surface of one of the concave surfaces forms a waterproof contact with the concave edge of one of the inner recesses when the cover is lifted upward. The breathing tube of claim 12, wherein a top surface of one end of the tube body has a venting hole, and when the water stopping structure is on the water surface, the top surface of the end portion of the tube body and the cover body The baffle is in contact. The breathing tube of claim 12, wherein a plurality of vent holes are disposed around the end of the tubular body above the concave surface, and at least two baffles are disposed on the top surface of one of the covers, when When the water structure is on the water surface, one of the top surfaces of the end of the tube body is in contact with the baffle of the cover body. The breathing tube according to claim 2, wherein the first stopping portion is a funnel-shaped surface located above the venting hole and communicating with the venting hole, the second stopping portion being coaxial with the second central axis One of the cylinders has a convex portion at a front end thereof, the cylindrical body is located in the tubular body and the funnel-shaped surface, and the convex portion is located below the funnel-shaped surface, and the cylindrical body is raised when the cover body is lifted upward The convex portion forms a waterproof contact with the vent hole of the tube body. The breathing tube according to claim 15, wherein one of the funnel-shaped surfaces is substantially larger than the vent hole, and when the water stop structure is on the water surface, the diameter of the funnel-shaped surface contacts the baffle of the cover body. . The breathing tube of claim 1, wherein the cover body further has a connecting device connecting the tube body and the cover body, wherein the connecting device is an elastic material.