JPH0243407Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an underwater fin, and more specifically, a blade formed at the tip of the boot can be raised at approximately right angles to the boot. Regarding underwater fins.

[Conventional technology]

As is well known, underwater fins are used in skiver diving and the like. Although various improvements have been made to the details of the structure of this underwater fin, the overall structure consists of a boot and a blade extending from the tip of the boot. The above-mentioned boots are parts for inserting the diver's toes, and the blades are formed to increase the amount of water kicked by the diver underwater, and in order to increase the amount of water kicked, the blade has a The blades are generally elongated to increase the surface area.

A diver can swim quickly underwater by attaching underwater fins having elongated blades extending therein to increase the surface area as described above. Therefore, underwater fins are very effective when used underwater, but in the case of underwater fins in which the boots and blades are integrally formed, it is difficult to keep the underwater fins attached when walking on land. In this case, the tip of the blade's elongated blade is positioned too far forward, making it difficult to walk. Therefore, in some cases, it may be necessary to remove the underwater fin and carry it in your hand while walking.

Therefore, a technique was proposed in Utility Model Application Publication No. 104162/1983 in which the blade was configured to be rotatable relative to the boot. According to this, at first glance it appears that the blade can be rotated relative to the boot, so the blade stands vertically when walking on land, but this technology is designed to allow the blade to swing in water. Since a tension force is applied between the blades to move them back to the other side when they are positioned in one direction, the blades cannot be raised to a vertical position, making it difficult to walk on land. In addition, the blades are actively rocked up and down when moving through underwater ice.

The present invention was developed in view of the above-mentioned points, and its purpose is that the blade does not swing when used underwater, so that it can be used like a normal underwater fin, and that it can be used on land. When walking, the blade can be raised almost at right angles and held in that position. Therefore, even when walking on land, it is possible to walk easily with the underwater fins attached, and the underwater fins are easy to operate and handle. There is a lot to offer.

[Means for solving problems]

The present invention has the following technical means to achieve the above object. That is, to explain using the reference numerals used in the attached drawings corresponding to the embodiments, the underwater fin consists of a boot for inserting the foot and a blade extending from the tip of the boot, the blade being 3 is rotatably attached to the tip 2a of the boot 2, the above-mentioned boot 2
There is a lock body 9 on either the side or the blade 3 side.
is provided, and the other side is formed with a lock receiving portion 18 that can automatically engage with the lock body 9 following the movement of the blade 3 when it is tilted from a substantially vertical state to a horizontal state. By manually releasing the lock on land, the blade 3 can be rotated relative to the boot, and a spring biases the blade 3 to stand up at a substantially right angle, allowing the user to walk while standing up at a substantially right angle. can be done, and
This underwater fin is characterized in that the blade 3 does not rotate with respect to the boot in water, so that the blade 3 can be locked in a horizontal state.

[Effect]

Since the present invention is based on the above-mentioned technical means, the blade 3 is used in a horizontal position when used underwater. When the blade 3 is laid down horizontally like this, the lock body 9 disposed on either the blade 3 side or the boot 2 side engages with the lock receiving portion 18 disposed on the other side. Therefore, since the horizontal state of the blade 3 is maintained, the blade 3 does not swing and can be used in the same way as a normal underwater fin.

When walking on land, by disengaging the lock body 9 and the lock receiving part 18, the blade 3 can be raised at a substantially right angle, and the blade 3 does not interfere with walking. Further, the engagement between the lock body 9 and the lock receiving portion 18 can be performed automatically when the blade 3 is laid down in a horizontal state.

〔Example〕

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings FIGS. 1 to 5.

In the figure, reference numeral 1 indicates an underwater fin, which is composed of a boot 2 for inserting the foot, and a blade 3 extending from the tip of the boot 2. The blade 3 is rotatably attached to the tip 2a of the boot 2, and this embodiment shows an example in which it is rotatably attached in the following manner. That is, engagement shafts 5, 5 are provided protrudingly on the side surfaces 4, 4 of the boot 2, and attachment pieces 6, which are formed on these engagement shafts 5, 5 from both left and right sides of the blade 3 toward the rear. The blade 3 is rotatably attached to the tip 2a of the boot 2 by engaging the engagement holes 7, 7 on the boot 2.

Moreover, like the spring 8 disposed at the engagement portion between the boot 2 and the blade 3, a spring is provided that biases the blade 3 only in the direction of raising the blade 3 at a substantially right angle.

In particular, as mentioned above, the tip 2a of the boot 2
The rear end 3a of the blade 3 is rotatably attached to the
A lock body 9 is disposed on the top. Various types of lock bodies 9 can be considered, but in this embodiment, a pair of left and right lock levers 10, 10 are used.
An example is shown in which the following is arranged.

That is, first, the lock body casing 11 is attached to the rear end 3a of the blade 3. The lock body casing 11 includes an upper casing 12 and a lower casing 1.
3, and the lock body casing 11 is fixed to the opening 14 by sandwiching the edge 14a of the opening 14 formed on the blade 3 between the upper casing 12 and the lower casing 13. . The above pair of left and right lock levers 10, 10
is rotatably supported on shaft pins 15, 15 provided on the upper casing 12 of the lock body casing 11 fixed on the blade 3 in this way, and is suspended thereon. It is normally biased in the closing direction by springs 16, 16. Reference numeral 17 denotes a tapered surface formed at the tip of the lock lever 10, and is formed so that the lock lever 10 can be rotated in the opening direction when a lock receiving portion 18, which will be described later, comes into contact with it. The lock receiver 18 is provided to protrude forward from above the tip 2a of the boot 2, and is formed at the tip of the lock levers 10, 10 while the blade 3 is being brought down to a horizontal position. In contact with the tapered surfaces 17, 17, the lock levers 10, 1
The lock lever 1 can be rotated in the opening direction, and after the blade is laid down horizontally, the lock lever 1 can be rotated in the opening direction.
It is formed so as to be able to engage with the engagement receiving portions 19, 19 formed at 0.

Next, an example of use of the above embodiment will be explained.

Since the underwater fin of this embodiment is constructed as described above, when the blade 3 is laid down horizontally, the lock body 9 disposed at the rear end 3a of the blade 3, that is, the lock levers 10, The blade 3 is engaged with a lock receiving portion 18 protruding from the tip 2a of the blade 3, thereby locking the blade 3 in a horizontal state.
Therefore, since the blade 3 can be maintained in a horizontal state, when used underwater, it can be used in the same way as a conventional underwater fin in which the blade 3 and the boot 2 are integrally formed.

When walking on land, the lock levers 10, 10 can be rotated as shown by arrows 20, 20 in FIG.
0 can be disengaged from the lock receiving part 18, and the blade 3 can be unlocked from the boot 2. When the lock is released in this way, the resilient force of the spring 8 disposed at the rotating part of the boot 2 and the blade 3 causes the blade 3 to move approximately 60 to 60 degrees as shown by the arrow 21 in FIG. Can be raised 90 degrees. The 60 to 90 degree raised state is maintained by the elastic force of the spring 8. Therefore, since there is no obstructive blade 3 on the front side of the tip 2a of the boots 2, the user can easily walk on land even while wearing the underwater fins 1.

To return the blade 3 to the horizontal position from the raised position of approximately 60 to 90 degrees as described above, the blade 3 may be rotated to the horizontal position as shown by arrow 22 in FIG. When the blade 3 is tilted horizontally in this way, the lock levers 10, 10 move toward the lock receiver 10 as shown by the arrow 23 in FIG. The tapered surfaces 17, 17 abut against the upper edge portions 18a, 18a of the lock receiver 18. For this purpose, the lock levers 10, 10 move downward while rotating in the opening direction as shown by arrows 24, 24 in FIG. In this position, the receiving portions 19, 19 formed on the lock levers 10, 10 engage with the lower surface 18b of the lock receiving portion 18, and the blade 3 is locked in a horizontal position. The above engagement is lock lever 1
This is automatically done by the elastic force of the springs 16, 16 which normally bias the terminals 0, 10 in the closing direction.

That is, by simply tilting the blade 3 in the horizontal direction arrow 22, the blade can be automatically locked in a horizontal position, making it easy to handle.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8 of the accompanying drawings.

The substantial structure, purpose, and effects of this second embodiment are the same as those of the first embodiment, and the same parts are given the same reference numerals and the explanation thereof will be omitted.

In the case of the first embodiment, a pair of left and right lock levers 10, 10 are provided as the lock body 9 at the rear end portion 3a of the blade 3. In this example, a slide lever 30 is provided as the lock body 9 at the rear end 3a of the blade 3. The above slide lever 30 is the upper slide lever 31
and a lower slide lever 32, and a protrusion 32a protruding from the lower slide lever 32 is slidably fitted into an elongated hole 33 formed on the blade 3. Then, the upper slide lever 31 is fixed to the tip of the protrusion 32a, so that the blade 3 is sandwiched between the upper and lower slide levers 31 and 32, and the slide lever 30 is moved in the longitudinal direction on the blade 3. It is inserted so as to be able to slide freely. A pressing spring 34 is provided between the end 33a on the tip side of the elongated hole 33 and the protrusion 32a.
and move the slide lever 30 to the blade 3.
The force is always applied to the rear of the

Reference numeral 35 denotes a lock receiving portion projecting from the tip 2a of the boot 2, and in this example, the lock receiving portion 35 projects horizontally from the tip 2a of the boot toward the front. When the blade 3 is rotated horizontally, the lock receiving piece 35 comes into contact with the tapered surface 30a formed at the tip of the slide lever 30, moves the slide lever 30 toward the tip of the blade 3, and also moves the slide lever 30 toward the tip of the blade 3. The blade 3 is provided in a protruding manner in order to engage with the slide lever 30 and lock the blade 3 in a horizontal state when the rotation of the blade 3 in the horizontal direction is completed.

In this example, the configuration is as described above, so
When raising the blade 3 from a horizontal position,
The slide lever 30 may be slid in front of the blade 3, that is, in the direction indicated by the arrow 36 in FIG. When the blade 3 is slid in this manner, the engagement between the slide lever 30 and the lock receiver 35 is disengaged, and the blade 3 becomes a rotating device in the rising direction as shown by the arrow 37 in FIG. can be raised.

Then, when returning to the original horizontal state from a state raised approximately 60 to 90 degrees, it is sufficient to rotate in the horizontal direction as shown by arrow 38. During the horizontal rotation, the tapered surface 30a formed at the tip of the slide lever 30 comes into contact with the lock receiving portion 35 protruding from the tip of the boot 2.
The slide lever 30 is moved in the direction of arrow 36. When the blade 3 has finished rotating horizontally, the tapered surface 30a and the lock receiving piece 35
comes out of contact. At this time, slide lever 30
is located below the lock receiving piece 30, and at the moment when the tapered surface 30a and the lock receiving part 35 come out of contact,
The slide lever 30 is pushed by the pressing spring 34 and moved toward the arrow 39 side, and engages with the lock receiving portion 35. This locks the blade 3 in a horizontal position.

Next, a third embodiment will be described in detail with reference to FIGS. 8 to 9 of the accompanying drawings.

In the first and second embodiments, the lock body 9 is disposed on the blade 3 side, and the lock receiving portion 18 is disposed on the boot 2 side.

In the case of this third embodiment, the tip 2a of the boot 2
A lock protrusion 50 formed of an elastic restoring member is provided on the top thereof, and a lock receiving portion 51 is formed on the rear end portion 3a of the blade 3. The above lock protrusion 5
0 protrudes substantially perpendicularly onto the boot 2, and has a tapered surface 50a formed at its tip. On the other hand, the lock receiving part 51 is formed in an L-shape, and an engagement hole 52 is formed in the horizontal part 51a.

In the case of this embodiment, since the configuration is as described above,
When disengaging the lock, move the lock protrusion 50 to the ninth position.
If you knock it down as shown by arrow 53 in the figure, you will see lock protrusion 5.
0 and the lock receiving piece 51 can be disengaged from each other. Furthermore, when the blade 3 is to be locked in a horizontal position, when the blade 3 is brought down to the horizontal position, the inner edge 52a of the engagement hole 52 comes into contact with the tapered surface 50a formed at the tip of the lock protrusion 50, and the lock is locked. After moving the protrusion 51 in the direction of the arrow 53 and placing the blade 3 in a horizontal state, the lock protrusion 50 is moved.
The blade returns in the direction of arrow 54 due to its elastic restoring force, and the engagement receiving portion 50b formed on the lock protrusion 50 engages with the lock receiving portion 51 to lock the blade 3 in a horizontal state.

In the above embodiment, an example was shown in which the blade 3 was rotated in the horizontal direction and locked in a horizontal state, but the blade 3 was rotated in the water.
When turned, it is automatically rotated horizontally due to water resistance, so it is not necessarily necessary to lock it in a horizontal position on land.

[Effect of idea]

As described in detail above, when using the present invention underwater, the blade 3 can be locked in a horizontal position and the blade and boot can be used in the same way as an underwater fin in which the blade and the boot are integrally formed. At times, the blade 3 can be raised almost at a right angle, so it is easy to walk with the underwater fins attached, and it is easy to raise the blade 3 and lock it in a horizontal position, making it easy to handle. It has various advantages such as providing underwater fins.

[Brief explanation of the drawing]

The accompanying drawings FIGS. 1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a plan view including a partially broken part, and FIG.
The figure is a cross-sectional view taken along the line A-A in Figure 1, Figure 3 is a cross-sectional view taken along the line B-B in Figure 2, Figure 4 is a side view showing the rotation of the blade, and Figure 5 is the lock. Figures 6 and 7 are diagrams illustrating the engagement of the body and the lock receiver.
6 is a plan view, FIG. 7 is a sectional view taken along line C-C in FIG. 6, and FIGS.
8 is a plan view, and FIG. 9 is a sectional view taken along the line DD in FIG. 8. In addition, in the figure 1...underwater fins, 2...boots, 2
a...Tip portion, 3...Blade, 9...Lock body, 18...Lock receiving portion, respectively.

Claims (1)

[Claims for Utility Model Registration] (1) An underwater fin consisting of a boot for inserting a foot and a blade extending from the tip of the boot, wherein the blade 3 is attached to the tip 2a of the boot 2. In the underwater fin, which is rotatably attached to the fin, a locking body 9 is provided on either the boot 2 side or the blade 3 side, and the blade 3 is held in a substantially vertical position on the other side. The lock body 9 follows the movement when it is tilted down to a horizontal position.
Lock receiving part 1 that can be automatically engaged with
8 is formed, and by manually releasing the lock on land, the blade 3 can be rotated relative to the boot, and a spring biases the blade 3 to raise it at a substantially right angle. An underwater fin that is capable of standing up and walking, and that the blade 3 does not rotate relative to the boot when underwater, and the blade 3 can be locked in a horizontal state. . (2) A pair of left and right lock levers 10, 10 are rotatably disposed on the blade 3 side, and on the boot 2 side, when the blade 3 is rotated horizontally, a The pair of left and right lock levers 10, 10 are in contact with the tapered surfaces 17, 17 in the opening direction 2.
4 and 24, and is provided with a lock receiver 18 that can engage with engagement receivers 19, 19 formed on the lock lever after the blade 3 is brought down to a horizontal state. An underwater fin according to claim 1 of the utility model registration claim, characterized in that: (3) A slide lever 30 as a lock body 9 is disposed on the blade 3 side so as to be slidable along the longitudinal direction of the blade 3, and a lock receiving portion 35 that engages with the slide lever 9 is provided on the boot 2 side.
An underwater fin according to claim 1 of the utility model registration claim, characterized in that: (4) A lock protrusion 50 formed of an elastic restoring member is provided as a lock body 9 on the boot 2 side, and a lock protrusion 50 is provided on the blade 3 side.
1. The underwater fin according to claim 1, which is a registered utility model, characterized in that a lock receiving portion 51 that engages with a lock receiving portion 51 is provided.