JPH0715562Y2 - Underwater fins - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an underwater fin used in scuba diving and the like, and more particularly to an underwater fin characterized by a means for fixing the underwater fin to a foot.

[Conventional technology]

As is well known, underwater fins are used in scuba diving and the like. Examples of the underwater fin include, for example, a “flipper” disclosed in Japanese Patent Laid-Open No. 64-43275, a webbed portion and a footrest portion integrally formed behind the webbed portion. And a heel strap or the like having end portions connected to both side portions of the footrest portion.

Further, in the flipper disclosed in the above-mentioned Japanese Patent Laid-Open No. 64-43275, the upper cover portion forming the upper surface of the footrest portion is configured to be vertically openable and closable.

Further, the heel strap for fixing the foot to be inserted into the footrest section is provided with a length adjusting means so that it can be easily adjusted to different sizes of the foot depending on the user. As another example of the above-mentioned length adjusting means, a "ski shoe stopper" is proposed in Japanese Patent Publication No. 39-10073.

In the case of the above-described flippers, the instep part opens and closes upward, so by opening the instep part when the foot is put in and out, it is possible to easily move the foot in and out. It becomes possible to do it, and the usability is improved.

According to the above-mentioned conventional technique, since the foot inserted into the footrest section is fixed by the instep portion and the heel strap, the foot can be firmly held. However, in this fixed state, the instep part only prevents the foot from coming out upward, and the foot strap is held forward by pressing the foot forward with the heel strap. It was what I was doing.

That is, in the case of the flippers disclosed in the above-mentioned JP-A-64-43275, although the upper and lower lid portions are configured to be openable and closable in the vertical direction, they are easily attached and detached, The primary retention means for retaining the flippers on the foot was the heel strap. Therefore, in order to attach / detach the flippers, the heel strap had to be operated, which was unsatisfactory with respect to improvement in operability of attachment / detachment.

As an underwater fin capable of solving such an inconvenience, a "diving fin" is proposed in Japanese Utility Model Laid-Open No. 2-102264. In the case of the above-mentioned "diving fin", an openable and closable lid portion is provided around the foot of the foot insertion portion, and the lid portion can be locked by the engaging means so that the width can be adjusted.

[Problems to be solved by the device]

Therefore, according to the "diving fin" proposed in Japanese Utility Model Laid-Open No. 2-102264, the fins can be formed by inserting the foot into the foot inserting section and then tightening the lid section by the engaging means. It seems that can be fixed to the diver's foot.

However, in order to firmly fix the fins so that they do not come off the diver's feet while diving, the lid must be tightened with such a force that the diver's feet are hurt. For this reason, it is practically difficult to fix the fin to the diver's foot only by the fastening means, and even in the case of the “diving fin”, the heel strap is used to attach the fin to the diver's foot. I'm trying to fix it.

Further, in the case of the above-mentioned "diving fins", when the engaging means is operated, the volume of the foot inserting portion is changed, so that when the fins are attached to the feet and When removed from the foot, the volume of the foot insertion part is increased to facilitate the attachment / detachment of the fins, and when attached, the volume of the foot insertion part is reduced to allow the fins to closely contact the diver's foot. Can be allowed to.

However, since the volume of the foot insertion portion is slightly increased by the elastic restoring force of the member forming the fin when the fastening by the fastening means is released, the operability of attachment / detachment should be significantly improved. I couldn't.

In view of the above-mentioned problems, the present invention provides an underwater fin that can be firmly held even when it is used in a strong motion in water without falling out of its foot when used, and has greatly improved operability of attachment and detachment. With the goal.

[Means for Solving the Problems]

In order to achieve the above object, the present invention has the following technical means. That is, the present invention will be described with reference to the reference numerals in the accompanying drawings corresponding to the embodiments.
An instep part 2 is formed on a bottom part 5 of the foot, a foot space A1 is formed between the instep part 2 and the bottom part 5, and the foot space A1 is formed.
In the underwater fin provided with fixing means for fixing the foot inserted therein; the upper part 2 has one end thereof rotatably attached to the underwater fin body 1, whereby the underwater fin body It is configured to be openable and closable along the longitudinal direction of 1, and when the instep 2 is opened, the foot space A1 and the foot insertion / extraction space A2
Is formed in the rear part of the underwater fin body 1, and when the instep 2 is closed, the foot insertion / extraction space A2 is lost and only the foot space A1 is formed. In addition, the foot space A1 is made as small as possible by urging the instep part 2 toward the bottom part 5 side, and the underwater fins are firmly fixed to the diving boot 7 worn by the user. The fixing means and the bottom part 5 of the underwater fin body 1 are formed to increase the frictional resistance between the bottom part 5 and the back side of the diving boot 7, and the underwater fin is accidentally detached from the diving boot 7. And a non-slip means (6) for preventing the above.

[Action]

Since the present invention comprises technical means, when the operation of attaching the underwater fins to the diving boot 7 and the operation of detaching the attached underwater fins from the diving boot 7, the underwater fin body is opened by opening the instep 2. 1
In the rear part, a large foot inserting space A composed of a foot space A1 and a foot inserting / extracting space A2 can be formed, so that the attaching / detaching operation of the underwater fins can be easily performed.

Further, since the instep portion 2 is biased toward the bottom portion 5 side by the fixing means, and the friction resistance between the bottom portion 5 and the back side of the diving boot 7 is increased by the slip preventing means 6, so that the heel The underwater fins can be firmly attached to the diving boot 7 without a strap.

〔Example〕

Next, one embodiment of the underwater fin of the present invention will be described in detail with reference to the attached drawings.

As shown in FIG. 1, the underwater fin 1 of this embodiment is made of rubber. Further, a footrest portion is formed behind the underwater fin body 1, and in the present embodiment, the footrest portion is composed of the instep portion 2 and the bottom portion 5.
The upper part 2 is formed so as to be located on the bottom part 5, and a fixing means is attached from the inside of the bottom part 5 to the upper part of the upper part 2.

The upper part 2 is also made of rubber, and the upper part 2
One end of is connected to the underwater fin body 1 via the opening / closing connection portion 3 and is configured to be openable / closable along the longitudinal direction of the underwater fin body 1. In this example,
Although the open / close connecting portion 3 is shown as being formed in a bellows shape with rubber or the like, other means may be adopted. For example, a shaft may be passed laterally with respect to the instep part 2 and the instep part 2 may be opened and closed in the vertical direction using the axis as a fulcrum. In this way, the instep part 2 attached to the underwater fin body 1
A rubber 4 made of soft rubber or the like is attached to the lower part of the.

On the other hand, the bottom portion 5 is formed integrally with the underwater fin body 1, and an anti-slip means 6 is formed at an upper portion thereof, that is, a portion where the back side of the diving boot 7 contacts.
As the anti-slip means 6, an example in which a circular protrusion is formed is shown in this embodiment.

As a fixing means for fixing the instep 2 to the underwater fin body 1, as shown in FIG. 2, FIG. 3, and FIG. Shows.

The lock plate 8 shown in FIG. 3 is made of metal, hardened plastic, or the like. A lock member holding member 11 made of metal, hardened plastic, or the like is fixed to the upper portion of the lock plate 8 by a lock pin 12, and the lock member holding member 11 has a wire.
Hook 1 for locking the locking means 17a formed at one end of 17
3 is formed.

The lock member 9 is made of metal, hardened plastic or the like, and a plurality of lock grooves 10 are formed therein.
Then, the lock member holding member 11 can be opened and closed in the left-right direction with the fulcrum as a fulcrum.

The bottom plate 14 is formed of a material such as metal or hardened plastic so as to have a U-shaped cross section, and guide wheels 15 are provided at two corners of the U-shaped cross section.

Further, in this embodiment, two wires are used. That is, one wire 17 has a locking means 17a formed at one end and a connection end 17b formed at the other end. The other one has a connecting end of the wire 17 at one end.
The wire 18 has a connecting end 18a formed to connect to 17b and a lock hook b formed at the other end.

The locking means 17a of the wire 17 is hooked on the hook 13, and the connecting end 17b of the wire 17 is inserted through the terminal plate 19a below the bottom plate 14 and fixed by the terminal plate 19b. Also, wire 18
The connecting end 18a of the
The lock latch 18b is fixed by a and can be selectively latched in the lock groove 10.

The spring 20 is arranged between the terminal plates 19a and 19b, and the connecting end 17b of the wire 17 and the connecting end 18a of the wire 18 are connected endlessly. In this case, the wires 17 and 18 are formed of a metal wire or the like, and the locking means 17a has a ring shape in which the wire 17 is fixed by a metal piece or the like. The connection ends 17b and 18a are formed of a spherical body of metal or the like so as not to come off from the terminal plate 19, and the terminal plate 19 is formed of metal, hardened plastic, or the like.

The lock plate 8 and the bottom plate 14 are embedded in the upper part 2 and the bottom part 5, respectively, and the bottom part 5 is formed with a wire groove 16 along which the wires 17 and 18 can be inserted.

Since the underwater fin of this embodiment is configured as described above, the instep part 2 can be freely opened and closed with respect to the underwater fin body 1. Therefore, the foot space A1 between the upper 2 and the bottom 5 can be changed. That is, when the instep 2 is in the open state, the foot space
A large foot insertion space A is formed by A1 and the foot insertion / extraction space A2. Also, when the instep 2 is closed, only the foot space A1 is formed, and the underwater fins are firmly fixed to the feet of the diver.

Next, a method of attaching and detaching the underwater fin 1 of this embodiment will be described.

First, as shown in FIG. 4, the upper 2 is opened. As a result, a large footing space A is formed in the rear part of the underwater fin 1, so that the diving boot 7 can be easily inserted.

After the diving boot 7 has been inserted into the large footrest space A, the lock stopper 18a is then selectively hooked to the lock groove 10 in accordance with the size of the diving boot 7.

Next, by rotating the lock member 9 as shown by an arrow P in the figure, the wires 17 and 18 are pulled, and the upper part 2 is closed as shown in FIG. At this time, the spring 20
A negative force is applied to the underwater fin 1, and the underwater fin 1 is firmly fixed and attached to the diving boot 7. At this time, the underwater fins do not accidentally separate from the diving boot 7 due to the action of the anti-slip means 6 formed at the portion where the back side of the diving boot 7 contacts, and even if the heel strap is not provided. The underwater fin can be firmly held.

In addition, when removing the underwater fins, the fixing means is released, and the instep 2 is changed from the closed state to the open state, so that the foot insertion / extraction space
Since A2 is formed, a large foot-resting space A is formed again at the rear of the underwater fin 1, so that the diving boot 7 is released and the diving boot 7 can be easily pulled out from the foot-resting space A.

Next, a second embodiment of the fixing means used in the present invention will be described with reference to FIGS. In this case, only the difference from the fixing means described above will be described.

As shown in FIG. 5, FIG. 6 and FIG. 7, this second embodiment is a front and rear opening / closing type in which a lock member 22 is vertically installed on the instep.

A lock member holding member 30 is fixed to the upper portion of the lock plate 21 by a stop pin 31, and a wire 34 is stretched around the lock member holding member 30. The lock member holding member is made of metal, hardened plastic, or the like. Guide wheels 32 are arranged on the left and right.

A slide member 24 made of metal, hardened plastic or the like is provided, and a plurality of lock grooves 25 are formed in the slide member 24. A slide member slide groove 26 is formed in the center of the instep portion 2 so as to be slidable back and forth, and the slide member is fixed to the slide groove 26 so as to be slidably fixed to the lock plate 21. Pin 27 is attached.

Also, two arms 28 made of metal, hardened plastic or the like are connected to the left and right so that the lock member 22 and the slide member 24 work together, one end is fixed to the tip of the slide member 24, and the other end is A slide shaft 29 made of metal, hardened plastic, or the like is passed through left and right side portions of a lock member slide groove 23 formed at a side portion of the lock member 22 and is slidably fixed.

Further, inside the lock member 22, a lock member spring 33 having one end fixed to the lock member 22 and the other end fixed to the slide shaft 29 is formed. On the instep 2, the wire 34 is pulled forward from the lock member holding member guide wheel 32 so as to form a ring shape, and then hooked in the lock groove 25 of the slide member 24.

Next, a method of attaching and detaching the underwater fin 1 of the second embodiment configured as described above will be described.

First, as shown in FIG. 7, the upper 2 is opened. Then, the diving boot 7 is inserted into the formed footrest space A, and the ring-shaped wire 34 is selectively hooked in the lock groove 25 according to the size of the diving boot 7. At this time, the slide member 24 is sliding to the rearmost part. Next, when the lock member 22 is moved as shown by an arrow Q in the figure, the arm 28 slides in the direction of the arrow R, and the slide member is interlocked with the arm 28.
24 slides in the direction of arrow S, the wire 34 is pulled, and the instep 2 is closed as shown in FIG. At this time, a negative force is applied to the lock member spring 33, and the underwater fin 1 is firmly fixed to the foot and mounted. Also, when taking off the underwater fins that are attached, release the fixing means,
Since the foot insertion / extraction space A2 is formed by changing the instep 2 from the closed state to the opened state, the diving boot 7 can be easily removed after being released.

Other than the two embodiments described above, various fixing means that can be easily performed with one touch are conceivable.

As described above, in the underwater fin 1 of this embodiment, since the instep part 2 can be opened and closed along the longitudinal direction of the underwater fin body 1, the fixing means for fixing the diving boot 7 to the underwater fin 1 is diving. Put the boots 7 in the space A,
The position when the upper part 2 is closed may be fixed. Therefore, unlike the conventional case, it is not necessary to adjust and attach the strap with the Achilles tendon portion, and the lock member 9 can be attached and detached only by opening and closing the upper portion 2. In addition, the fixing means is pressed by the instep portion 2, and the anti-slip means 6 is attached to the portion where the back side of the diving boot 7 contacts.
Since the diving boot 7 is fixed by the press of the upper part 2 and the interaction of the anti-slip means 6 with each other, the attachment / detachment can be performed with one touch, and the operation for attaching / detaching the underwater fin 1 in water. Can be done easily.

[Effect of device]

According to the present invention, as described above, according to the present invention, by opening the instep 2, a large foot inserting space A composed of the foot space A1 and the foot inserting / extracting space A2 can be formed in the rear portion of the underwater fin body 1. The operation of attaching the underwater fin 1 to the diving boot 7 and the operation of removing the attached underwater fin from the diving boot 7 can be easily performed.

Further, when used as a device, the instep portion 2 can be urged toward the bottom portion 5 side by the fixing means, and the bottom portion 5 and the back side of the diving boot 7 can be moved by the slip preventing means 6. Since the frictional resistance between the underwater fins can be increased, the underwater fins can be firmly attached to and held on the diving boot 7 without a heel strap.

[Brief description of drawings]

FIG. 1 is a perspective view of an underwater fin, FIG. 2 is a top view of the fixing means of the first embodiment, and FIG.
1 is a front view of the same in the closed state from the direction X in FIG. 1, FIG. 4 is a front view of the same in the open state, FIG. 5 is a front view of the fixing means of the second embodiment, and FIG. FIG. 7 is a side view in the closed state from the direction, and FIG. 7 is a side view in the same opened state. In the figure, 1 ... underwater fin, 2 ... instep part, 3 ... opening / closing connection part, 4 ... rubber, 5 ... bottom part, 6 ... skid prevention means,
7 ... diving boots, 8 ... rock plate, 9 ...
… Lock member, 10 …… Lock groove, 11 …… Lock member holding member, 12 …… Lock member holding member Stop pin, 13 …… Fuk, 14 …… Bottom plate, 15 …… Guide wheel, 16 …… Wire groove,
17 ... Wire, 17a ... Locking means, 17b ... Connection end, 18
...... Wire, 18a ...... Connection end, 18b ...... Lock stopper, 19 ...... Terminal plate, 20 ...... Spring (Example 1 above), 21 ...... Lock plate, 22 ...... Lock member, 23 ...
… Lock member slide groove, 24 …… Slide member, 25 ……
Lock groove, 26 …… Slide member slide groove, 27 …… Slide member stop pin, 28 …… Arm, 29 …… Slide shaft,
30 …… Lock member holding member, 31 …… Lock member holding member stop pin, 32 …… Lock member holding member guide wheel, 33 ……
The lock member spring, 34 ... Wire (above Example 2), A ... Foot insertion space, A1 ... Foot space, A2 ... Foot insertion / extraction space.

Claims (1)

[Scope of utility model registration request] 1. An instep part 2 is formed on a bottom part 5 of an underwater fin body 1, a foot space A1 is formed between the instep part 2 and the bottom part 5, and the instep part is inserted into the foot space A1. In an underwater fin provided with a fixing means for fixing a foot; one end of the instep 2 is rotatably attached to the underwater fin body 1 so that the instep longitudinal direction of the underwater fin body 1 is increased. It is configured to be openable and closable along with, and when the instep 2 is opened, the foot space A1 and the foot insertion / extraction space A2
Is formed in the rear part of the underwater fin body 1, and when the instep 2 is closed, the foot insertion / extraction space A2 is lost and only the foot space A1 is formed. In addition, the foot space A1 is made as small as possible by urging the instep part 2 toward the bottom part 5 side, and the underwater fins are firmly fixed to the diving boot 7 worn by the user. The fixing means and the bottom part 5 of the underwater fin body 1 are formed to increase the frictional resistance between the bottom part 5 and the back side of the diving boot 7, and the underwater fin is accidentally detached from the diving boot 7. And a non-slip means (6) for preventing the occurrence of water.