KR20030053022A - Diving flippers with heel strap buckles - Google Patents

Abstract

PURPOSE: To enable manufacturing cost reduction of a flipper by simplifying the structure of a buckle. CONSTITUTION: This flipper with a buckle has a flipper part 2, a heel strap 3 and a buckle 4 for connecting them to each other. The buckle 4 comprises two members: a front connecting member 11 and a rear connecting member 12, and a bearing 27 is formed at the front connecting member 11, while a shaft part 32 for engaging/disengaging the bearing part 27 and a strap holding part 33 around which the heel strap 3 is extended to allow length adjustment are formed at the rear connecting member 12.

Description

Diving Webbed with Heel Strap Buckle {DIVING FLIPPERS WITH HEEL STRAP BUCKLES}

The present invention relates to a diving webbed with a heel strap buckle.

Japanese Patent Laid-Open No. 1989-38510B discloses a diving webbed comprising a foot pocket and a heel strap each connected by a buckle to control the length of the heel strap. Each buckle includes a sheath-like first coupling member and a second coupling member adapted to be removably connected to the first coupling member. The first coupling member is attached to the rear end of the foot pocket. The second coupling member is provided with a retaining frame provided with a spring and a movable lock lever.

In the known buckle disclosed in this patent publication, the second coupling member comprises three parts: a retaining frame, a spring and a movable locking lever. The assembly of these parts requires a lot of time and labor, which at least partly contributes to the increased manufacturing cost of the diving web.

It is an object of the present invention to reduce manufacturing costs by improving the diving webbed with heel strap buckle to save the time and labor required for assembly of the buckle.

1 is a perspective view of a diving web with a heel strap buckle.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

3 is an exploded view of the buckle.

4 is an assembly view of the buckle.

According to the present invention, a blade having a relatively long and longitudinally extending foot pocket, a heel strap extending behind the blade, and connecting the heel strap and the blade to each other, the heel of the diver A pair of diving webs are provided each containing a pair of buckles to adjust the tightness of the strap at the perimeter.

The blade includes a pair of engagement projections projecting outwardly in a lateral direction, and on one side of the heel strap a plurality of engagement teeth each extending laterally and intermittently arranged longitudinally between opposite edges of the heel strap. And an additional coupling, each buckle comprising a first coupling member attached to the engagement protrusion and a second coupling member detachably connected to the first coupling member, wherein the first coupling member is engaged. An arcuate support is provided at the rear of the projection, with an opening directed towards the front region of the blade, the second coupling member being in releasable engagement with the support through the opening from the front of the blade and extending laterally of the heel strap. Reverse each end of the heel strap in the form of an adjustable shaft and in a length-adjustable manner An open strap retainer, the strap retainer extending parallel to the axis and folded around the heel strap, and the heel strap extended parallel to the reverse block behind the reverse block and inverted in two layers. And a set of strap retaining blocks facing each other to squeeze in the thickness direction of the heel strap.

The present invention includes the following examples.

The width of the opening of the support is smaller than the diameter of the shaft.

The engaging projection formed on the blade cooperates with the support to squeeze the shaft engaged with the support in the radial direction of the shaft.

In the strap reverse block of the second coupling member, one of the engaging teeth of the heel strap is provided with means for contacting from the direction in which the heel strap is loosened.

The first coupling member lies between the shaft engaged with the support and the heel strap retainer, and a means for cooperating with the heel strap retainer to squeeze the heel strap folded around the reverse block in the thickness direction of the heel strap is provided behind the shaft.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a diving webbed with a heel strap buckle according to the present invention will be understood from the description presented with reference to the accompanying drawings.

The diving web 1, which is shown in perspective view in FIG. 1 and provided with a buckle, is a pair of blades 2, a heel strap 3, and a pair of connecting the heel strap 3 and the blade 2 to each other. A buckle 4. The blade 2 is made of an elastic material such as a plastic elastomer, which has a front region formed of a web 6 and a rear region as a foot pocket 7 for receiving a diver's foot. The heel strap 3 is made of a flexible elastic material, such as natural rubber, and is arranged intermittently in the longitudinal direction on one side of the strap, for example on the outer surface, and extends in the transverse direction, as in the illustrated embodiment. Ridged engagement teeth 8 are formed. The buckle 4 is made of a hard plastic material or similar material and is attached to the web 1 by engagement projections 5 formed on each side of the web 1 behind the rear end of the blade 2. Attached. The longitudinally opposite ends 9 of the strap 3 are attached to each buckle 4 to be adjustable in length so that the strap 3 can be tightened around the diver's heel. The buckle 4 comprises a front coupling member 11 and a rear coupling member 12 which are detachably fixed to the associated protrusion 5 in a position biased toward the front region of the blade 2, which The end 9 of the associated strap 3 is folded around the rear coupling member and placed in a position biased towards the rear region of the blade 2, detachably attached to the front coupling member 11.

2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is an exploded view of the buckle 4, and FIG. 4 is an assembled view of the buckle 4. In FIG. 2 a strap 3 is shown by an imaginary line and in FIG. 4 a strap 3 is shown which is separated from the buckle 4. The protrusion 5 formed in the blade 2 has a vertical wall 16 facing the rear end of the blade 2 as shown in FIG. 2, and an arc-shaped outer circumferential surface excluding the vertical wall 16 is shown in FIG. 3. There is a groove 17 extending in the circumferential direction as shown in FIG.

The front coupling member 11 of the buckle 4 has an arcuate front portion 18 and a rear portion 19 extending laterally of the strap 3. The front portion 18 is located outside the protrusions 5 to enable angular movement around the protrusions. The region flared inwardly of the front portion 18 is engaged with the groove 17 of the protrusion 5 from the left side as shown in FIG. In the rear portion 19 of the front coupling member 11 there is a rear wall 22 and an opposing side wall 23. The rear wall 22 has a first stopper 24 protruding slightly rearward at its upper end, and a second stopper 26 protruding slightly outwardly near each upper end of the opposing side wall 23. It is. In the transient area between each side wall 23 and the front part 18, the support part 27 which has an arcuate recessed surface, respectively, and the opening 30 toward the front area of the blade 2 are formed, respectively. As the front coupling member 11 moves to the left as seen in FIG. 2, the inwardly flared region 21 is disengaged from the groove 17 and the protrusion 5.

The rear coupling member 12 of the buckle 4 has opposing sidewalls 31 extending parallel to each other in the longitudinal direction of the blade 2, and are in a position biased toward the front region of the blade 2 and opposing the sidewalls 31. And a strap retainer 33 extending between the opposing side walls 31 and in a position biased toward the rear region of the blade 2. The distance between the opposing side walls 31 is greater than the width of the rear wall 22 of the front coupling member 11. The axis 32 is cylindrical and extends in the transverse direction of the strap 3. The shaft 32 is engaged and disengaged with the support 27 of the front coupling member 11 through the opening 30 of the support 27, the shaft 32 is in intimate contact with the support 27, and the shaft 32 can slide in the circumferential direction along the support surface. According to one preferred embodiment of the invention, the circumferential length of the support 27 slightly exceeds one half of the circumferential length of the shaft 32. The opening 30 of this support 27 has a width L (see FIG. 2) and is slightly smaller than the diameter D of the shaft 32 such that at least one of the supports 27 and the shaft 32 is elastic. Can be engaged with each other as When engaged with each other, the shafts 32 do not inadvertently fall from the support 27. It should be understood that the present invention may utilize a variant in which the width L of the opening 30 is larger than the diameter D of the shaft 32. The strap retainer 33 extends relatively long in the vertical direction as seen in FIG. 2 and has a strap reverse block 34 showing a J-shaped cross section, and an upper strap retaining which is spaced apart from each other and behind the strap reverse block 34. Block 36 and lower strap retaining block 37 are included. The upper strap retaining block 36 is shown partially cut away, but the strap retaining block 36 extends entirely between the opposing sidewalls 31, 31. The pair of lower strap retaining blocks 37 extend inwardly from each sidewall 31, with the lower strap retaining blocks having distal ends 38 that are opposed to and spaced apart from each other in the middle between the opposing sidewalls 31. . Only one of these strap retaining blocks 37, 37 is shown in FIGS. 3 and 4. The strap 3 can pass between these distal ends 38, 38 spaced apart from each other.

The manner in which the strap 3 is attached to the rear coupling member 12 is apparent from FIG. 2. The strap 3, indicated by an imaginary line in FIG. 2, is located between the upper strap retaining block 36 and the lower strap retaining block 37 from the back of the blade 2, ie from the right as seen in FIG. 2. After inserting the end 9 in, it is folded back around the reverse block 34. The end 9 folded back in this way passes again between the upper strap retaining block 36 and the lower strap retaining block 37 and extends rearwardly. By this strap 3, one of the engagement teeth 8 is engaged with the jaw 39 of the J-type strap reverse block 34, and the strap 3 actually uses the diving web 1. This prevents the end 9 from moving in the direction that may loosen, ie to the left as seen in FIG. 2. The distance that the upper strap retaining block 36 and the lower strap retaining block 37 are spaced apart from each other in the vertical direction is adjusted so that two layers of the same folded strap 3 can be pressed into contact with each other as shown. do. The strap reverse block 34 and the upper strap retaining block 36 are arranged such that the strap 3 can be bent as shown. With the strap reversed and bent in this way, the end 9 can be strongly pulled rearward with respect to the foot pocket 7 to reduce the size between the pair of buckles 4 and thus the strap around the diver heel. (3) can be tightened. However, the strap 3 is never tightened unless the end 9 is pulled in this way. In order to loosen the strap 3, the rear extending end 9 can be moved forward to disengage the engagement tooth 8 from the jaw 39 of the reverse block 34, thus the entire strap. (3) can move backwards.

The operation of attaching the strap 3 to the buckle 4 and adjusting the length of the strap 3 between the pair of buckles 4 generally results in the rear coupling member 12 being engaged from the front coupling member 11. In view of the habit of being carried out released, the rear coupling member 12 is configured to facilitate the operation in this state.

The rear coupling member 12 with a strap is attached to the support portion 27 of the front coupling member 11 in which the shaft 32 of the rear coupling member 12 is mounted to the protrusion 5 of the blade 2. Engage the front coupling member 11 and then move the rear coupling member 12 until these coupling members 11, 12 are aligned with each other as shown in FIGS. Rotate around axis 32. In order to wear the webbed assembled in this way, if the tightening effect of the straps around the heel is insufficient, the opposite end 9 of the strap 3 can be strongly pulled backwards to adjust the length of the strap accordingly.

Since the front coupling member 11 and the rear coupling member 12 of the buckle 4 are connected to each other, the wall 16 of the protrusion formed on the blade 2 cooperates with the support 27 to have a diameter. It is preferable to compress the shaft 32 in the direction. The protrusion 5 is an integral part of the blade 2 and is made of an elastic material so that the protrusion 5 is elastic by pulling or pushing the shaft 32 when the shaft 32 is engaged or disengaged with the support 27. It can be modified. Preferably, the rear wall 22 of the front coupling member 11 of the buckle 4 cooperates with the jaw 39 of the strap reverse block 34 of the rear coupling member 12 to secure the strap 3. Compression, thereby preventing the strap 3 from moving in an inadvertently loosening direction. The first stopper 24 provided on the upper side of the rear wall 22 contacts the strap when the rear coupling member 12 rotates in the direction indicated by the arrow P in FIG. 2, and the rear coupling member (12) prevents inadvertent release of engagement from the front coupling member (11). When the rear coupling member 12 rotates in the direction indicated by the arrow P, the second stopper 26 provided on the upper side of each side wall 23 of the front coupling member 11 is the rear coupling member 12. Contacting the third stopper 45 in the form of a protrusion formed on each inner surface of the opposing side wall 31 of the side wall), whereby the rear coupling member 12 unintentionally rotates in the direction indicated by the arrow P. Is prevented. When the coupling members 11 and 12 are to be disengaged from each other, the rear coupling member 12 is forcibly rotated in the direction indicated by the arrow P, so that the opposite sidewalls of the rear coupling member 12 ( 31 passes over the second stopper 26 and the strap 3 overtakes the first stopper 24. The shaft 32 can then be disengaged from the support 27.

In the buckle 4 constructed as described above, in order to prevent the shaft 32 from inadvertently falling out of the support 27, the width L of the opening of the support 27 is determined by the diameter of the shaft 32 ( It is preferably smaller in size than D) and at the same time the shaft 32 is pressed between the back wall 16 and the support 27 of the projection 5. However, only one of these measures may be adopted to utilize the present invention.

In the diving web according to the present invention, the buckle that serves to connect the blade and the strap to each other is a simple structure including only the front coupling member and the rear coupling member, these two coupling members without much time and effort Can be assembled together.

As an advantageous result, diving fins using these buckles can be manufactured at substantially lower costs than the cost required to produce known diving fins using the buckle.

Claims (5)

Blades extending relatively long in the longitudinal direction and with foot pockets, A heel strap extending behind the blade, A pair of buckles which serve to connect the blade and the heel strap to each other and adjust the tightness of the strap around the diver heel, The blade includes a pair of engagement protrusions projecting laterally outward, One side of the heel strap is formed with a plurality of engaging teeth each extending laterally and intermittently arranged longitudinally between opposite edges of the heel strap, Each of the buckles includes a first coupling member attached to the engagement protrusion and a second coupling member detachably connected to the first coupling member, wherein the first coupling member includes the blade front region. An arcuate support having a facing opening is provided behind the engagement projection, the second coupling member being detachably engaged with the support through the opening from the front of the blade and extending laterally of the heel strap. A cylindrical shaft and a strap retainer adapted to reverse each end of the heel strap in a length-adjustable manner, the strap retainer lying behind the shaft, the strap retainer extending parallel to the axis and around the heel strap The folded strap reverse block and the strap reverse block behind the For diving fins of one of said heel strap extending parallel to the reverse and reverse to the trap block comprises a strap retaining blocks of one set being opposed to each other to crimp the two layers in the thickness direction of the heel strap pair. The pair of diving fins of claim 1, wherein the width of the support opening is smaller than the diameter of the shaft. The pair of diving fins according to claim 1, wherein the engaging projection formed on the blade presses the shaft engaged with the support portion in the radial direction of the shaft in cooperation with the support portion. 2. The pair of diving fins of claim 1 wherein the strap reverse block of the second coupling member is provided with means for contacting one of the engaging teeth of the heel strap from a direction of loosening the heel strap. . The heel strap of claim 1, wherein the first coupling member includes the heel strap lying between the shaft engaging the support and the heel strap retainer and cooperating with the heel strap retainer to be folded around the reverse block. A pair of diving fins, wherein a means for pressing in the thickness direction is provided behind the shaft.