DIVING FIN FLIPPER MOUNTING MECHANISM

Description

BACKGROUND OF THE DISCLOSURE

Technical Field

The present disclosure relates to a diving fin, and particularly relates to a flipper mounting mechanism for diving fins.

Description of the Related Art

Freediving refers to the extreme sport where divers dive into water with a breath without carrying an air tank, for this reason, it is generally necessary to have three kinds of equipment: fins, goggles and breathing tubes. Among them, the fin is the most important consideration, its design style, manufacturing quality and structure will affect the diver's performance in the water, and the fins mentioned here generally include three components: heels, flippers and water guides, and the flipper can be divided into two parts: a paddling part and a mounting part, and a folding angle is defined between the paddling part and the mounting part, so that the paddling part and the mounting part are not located on the same horizontal plane.

Among the conventional types of diving fins, especially the flippers made of composite materials and separated from the heels, the flippers are usually glued to the bottom of the heels by adhesive, or attached to the bottom of the heels by screws or clips, etc. However, such flipper assembly operation using adhesive means to assemble the flippers does not only require skills and experience that leads to construction threshold requirements, but also involves inconvenient construction, complicated and time-consuming process, and the adhesive may affect the fixation structure if the adhesive is not evenly coated, and so on. In addition, the contact part between the flipper and the heel socket cannot move relative to each other, so that when a force is exerted on the flipper, the flipper is bent and deformed, and due to the difference in material properties, the amount of deformation is not the same as that of the heel socket, resulting in the two pulling on each other, failure to effectively maximize the bending characteristics of the flipper, or even damage to the flipper. Although locking the flippers and the heels by means of screws or clips is convenient for the users to install and disassemble the flippers, there are still the problems of involving more installation steps and requiring the use of specific tools, etc. Moreover, the practice of making holes on the flipper in order to match the means of locking will create a weak point of the flipper structure, and the periphery of the holes will continue to receive the applied pressure since the locking position cannot be moved, resulting in a concentration of stress, which may lead to damage to the flipper structure.

In view of this, it is a subject of the present disclosure to find a way to connect an assembly structure for assembling a flipper with the bottom of a heel to achieve the purpose of flexibly disassembling a flipper through a detachable engagement mechanism, wherein the engagement mechanism can form an accommodating structure to limit and fix the flipper, and at the same time, to use a moving mechanism installed in the assembly structure to produce a relative displacement and provide an adaptive adjustment function between the flipper and the heel to overcome the aforementioned drawbacks of the related art and facilitate users to adjust the flipper to a better position according to their different needs in terms of size and foot shape and to kick the flipper more easily, so as to enhance the smoothness of the kicking process under water.

SUMMARY OF THE DISCLOSURE

The primary objective of the present disclosure is to provide a detachable and adjustable flipper mounting mechanism and allow users to adjust and attach a flipper to a diving fin according to their own needs or usage habits.

To achieve the aforementioned objective, the present disclosure discloses a diving fin flipper mounting mechanism, provided to be installed under a fin heel and movably assembled with a flipper, which includes: a base member, having a base body, at least one slide seat and a first moving unit, the slide seat and the first moving unit being installed on the base body, and the base body being provided for assembling and coupling the fin heel; a pressing plate member, provided for assembling and coupling the base member, the pressing plate member comprising a pressing plate body, an activity area and a second moving unit, the activity area being concavely formed on the top surface of the pressing plate body, the second moving unit corresponding to the first moving unit and being installed on the pressing plate body, such that when the pressing plate member is assembled with the base member, the activity area accommodates the slide seat, and the first moving unit and the second moving unit are assembled accordingly for producing a relative displacement; and a fastener, provided for assembling and coupling the pressing plate member, the fastener having a clamping part, a pair of flexible parts and a pair of clamping units, two opposite sides of an end of the clamping part being connected to an end of one of the flexible parts separately, and another end of each flexible part being connected to one of the clamping units, and a slot being separately and concavely formed on two corresponding inner sides between the pair of clamping units and provided for the flipper to be inserted from the pair of slots and assembled between the pressing plate member and the fastener.

In a preferred embodiment, the base member includes two of the slide seats and a first groove, the slide seats are arranged on two opposite sides of the base body respectively, and the first groove is concavely formed at a central position of the surface of the base body between the pair of slide seats. A side of each slide seat and the bottom surface of the slide seat form a first acute angle, and each side wall of two opposite sides of the activity area is tilted towards the center at a second angle corresponding to the first angle, such that the bottom surface of the activity area and each side wall form a second acute angle, and through each first acute angle and each second acute angle, the pair of slide seats are movably inserted between the two opposite side walls of the activity area. The first moving unit is an actuating lever, the base member further comprises an axial seat configured to be corresponsive to the first groove and arranged on another side of the base body relative to two sides of the pair of slide seats respectively, and the axial seat is provided with a passing opening; the second moving unit is a slide block configured to be corresponsive to the first groove and arranged at the central position of a side of the activity area, the slide block is provided with a perforation; when the pressing plate member is assembled with the base member, each of the slide seats is inserted between a side wall of two opposite sides of the activity area and the slide block, such that the slide block is embedded into the first groove, and the actuating lever is passed and embedded into the passing opening and the perforation and provided for producing a relative displacement to a adjust the relative position between the pressing plate member and the base member. The actuating lever is a feeding screw having a feeding part, and the side wall inside the perforation is provided with a thread corresponding to the feeding part for producing relative displacement between the pressing plate member and the base member using the feeding part and the thread by rotating the actuating lever, so as to adjust the assembling position of the flipper.

In another preferred embodiment, the base member includes a single slide seat, two opposite sides of the slide seat are tilted outward at a first angle, such that each of the sides and the bottom surface of the slide seat define a first acute angle, each of the side walls of two opposite sides of the activity area is tilted towards the center at a second angle corresponding to the first angle, such that the bottom surface of the activity area and each of the side walls define a second acute angle, and the first acute angles in corporation with the second acute angles allow the sliding seat to be movably inserted between the two opposite side walls of the active area. The first moving unit is a gear, the second moving unit is a rack, and when the base member is assembled with the pressing plate member, the gear engages with the rack, such that rotating the first moving unit can move the pressing plate member.

Wherein, the pressing plate member is configured to have a contour corresponding to an end of the flipper, such that a front end of the pressing plate body can be bent downward at a limit folding angle to define a limit surface, and the pressing plate body has a plate sidewall disposed around the periphery of the rear bottom surface of the pressing plate body. Each of the slots is concavely formed on a side wall of each of the clamping units and extended to a front edge thereof to form an insert port, which provided for inserting and accommodating the peripheral part on both sides adjacent to the folding angle in the flipper, and the inner top surface of the slot has a first upper guide surface, a second upper guide surface and a third upper guide surface, and the inner bottom surface has a first lower guide surface, a second lower guide surface and a third lower guide surface, provided for guiding the flipper to be inserted into the pair of slots. A convex arc microstructure is formed and connected between the second upper guide surface and the third upper guide surface and configured to be corresponsive to the third lower guide surface, and an anti-slip unit is arranged on a side of the top surface of the clamping part for increasing frictional resistance.

Wherein, the diving fin flipper mounting mechanism further includes a fastening element, a fastening hole separately formed on two opposite sides of the front part of the pressing plate body, and a fastening opening formed on the clamping unit and configured to be corresponsive to the fastening hole; wherein the fastening element is passed and coupled to the fastening opening and locked into the fastening hole to secure the assembling tightness and adherence between the clamping unit and the front part of the pressing plate body. The pressing plate member and the fastener are assembled by an assembling method including over-molding, adhesive bonding, ultrasonic welding, heated compression molding, or assembling component locking or riveting, such that the side periphery of the clamping part is securely combined with the plate sidewall, the periphery of the upper side of each flexible part abuts and couples the plate sidewall, and the upper edges of two corresponding sides of each clamping unit abut against two opposite sides of the front section of the pressing plate body respectively.

In summation of the description above, the present disclosure has the following features:

Through the arrangement of the pressing plate member and the fastener, the clamping unit, the flexible part, the clamping part, the pressing plate body including the limit surface and the plate sidewall form a flipper accommodation space with both limiting and positioning functions to allow users to complete the assembly process of fixing and connecting the fin heel by simply inserting the flipper, thereby achieving quick and easy assembling operation to meet practical needs.

Through the connection of the plate sidewall with the side periphery of the clamping part and the periphery of the upper side of the pair of flexible parts, and the formation of a space that can limit the up and down displacement of the flipper, thereby minimizing the amount of clearance after the flipper is connected, the present disclosure can avoid continuous tightening and compression at a specific position of the flipper and can better reduce the resulting stress concentration which may cause adverse effects or even damage to the flipper.

In addition to using the pressing plate member and the fastener to clamp the flipper, the pair of side walls of the activity area and the slide seat, and the first moving unit and the second moving unit are used to realize the engagement mechanism, the limiting mechanism and the moving mechanism so as to provide a flexible and adaptable position adjustment range when assembling the pressing plate member and the base member, thereby allowing users to move the position of the flipper according to different body shapes, leg shapes and shoe sizes, and adjust the flipper to a better position where it is easier to kick with force. Thus, the present disclosure can improve the smoothness of movement in the water and the comfort of kicking.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing the architecture structure of a first preferred embodiment of the present disclosure;

FIG. 2 is an exploded view of a second preferred embodiment of the present disclosure;

FIG. 3 is a schematic view showing the appearance of the second preferred embodiment of the present disclosure;

FIGS. 4A and 4B are schematic views showing both top and bottom sides of the second preferred embodiment of the present disclosure;

FIGS. 5A and 5B are schematic views showing both top and bottom sides of a fastener of the second preferred embodiment of the present disclosure;

FIG. 6 is an exploded view of a third preferred embodiment of the present disclosure;

FIG. 7 is a schematic view showing the appearance of the third preferred embodiment of the present disclosure;

FIG. 8 is a schematic view showing the disassembling of a base member and a fin heel of the third preferred embodiment of the present disclosure;

FIGS. 9A and 9B are schematic views showing both top and bottom sides of a pressing plate body of the third preferred embodiment of the present disclosure;

FIGS. 10A and 10B are schematic views showing both top and bottom sides of a fastener of the third preferred embodiment of the present disclosure;

FIGS. 11A and 11B are schematic views showing a fastener assembled with a pressing plate member and a fin heel installed with a diving fin flipper mounting mechanism in accordance with the third preferred embodiment of the present disclosure;

FIGS. 12A and 12B show the cross-sectional side views of a diving fin flipper mounting mechanism and a flipper when they are assembled and after they are assembled with each other in accordance with a fourth preferred embodiment of the present disclosure respectively;

FIGS. 13A to 13D are schematic views showing the use of a diving fin of the fourth preferred embodiment of the present disclosure; and

FIG. 14 is a schematic view of enhancing the structural strength of an assembly structure of a fifth preferred embodiment of the present disclosure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following description together with the attached drawings are provided in order to enable people having ordinary skill in the art to clearly understand the technical contents of the present disclosure.

With reference to FIG. 1 for the schematic view of the architecture of a diving fin flipper mounting mechanism in accordance with the first preferred embodiment of the present disclosure, the diving fin flipper mounting mechanism 1 includes a base member 10, a pressing plate member 11 and a fastener 12, which is installed under a fin heel 2 and movably assembled with a flipper 3. The base member 10 includes a base body 100, at least one slide seat 101 and a first moving unit 104, and the slide seat 101 and the first moving unit 104 are installed on the base body 100. The pressing plate member 11 includes a pressing plate body 110, an activity area 111 and a second moving unit 112, the activity area 111 is concavely formed on the top surface of the pressing plate body 110, the second moving unit 112 is configured to be corresponsive to the first moving unit 104 and installed on the pressing plate body 110. The fastener 12 includes a clamping part 120, a pair of flexible parts 121 and a pair of clamping units 122, two opposite sides of an end of the clamping part 120 are separately connected to an end of the flexible part 121, another end of each flexible part 121 is connected to one of the clamping units 122, and a slot 1220 is separately formed on two corresponding inner sides between the pair of clamping units 122.

The base body 100 is provided for assembling with the fin heel 2. When the pressing plate member 11 is assembled with the base member 10, the activity area 111 accommodates the slide seat 101, and the first moving unit 104 and the second moving unit 112 are assembled correspondingly for producing a relative displacement. In addition, after the fastener 12 is assembled with the pressing plate member 11, the flipper 3 is inserted into the pair of slots 1220 and assembled between the pressing plate member 11 and the fastener 12, so that the flipper 3 is installed under the fin heel 2 through the diving fin flipper mounting mechanism 1.

With reference to FIGS. 2 to 5B for the schematic views of the second preferred embodiment of the present disclosure, the base member 10 includes a single slide seat 101 installed on the base body 100, and two opposite sides of the slide seat 101 are tilted outward at a first angle, such that each side of the slide seat 101 and the bottom surface of the slide seat 101 define a first acute angle. The pressing plate member 11 is configured to have a contour corresponding to an end of the flipper 3, such that the contour of the pressing plate member 11 is substantially the same as the contour of the mounting part of the flipper 3 for the attachment of the two, so that a front end of the pressing plate body 110 is bent downward at a limit folding angle 1100 to define a limit surface 1101, and the pressing plate body 110 has a plate sidewall 114 disposed around the periphery of the rear bottom surface of the pressing plate body 110. In the configuration corresponding to the slide seat 101, and each side wall of two opposite sides of the activity area 111 is separately titled towards the center at a second angle corresponding to the first angle, such that the bottom surface of the activity area 111 and each side wall define a second acute angle 1110. A side of the top surface of the clamping part 120 is provided with an anti-slip unit 1200, such as an anti-slip structure in the shape of a strip or a dot protruding from a plane and having a high coefficient of friction, and each slot 1220 is concavely formed on a side wall of each clamping unit 122 and extended to its front edge to form an insert port, and the inner top surface of each slot 1220 has a first upper guide surface 1221, a second upper guide surface 1222 and a third upper guide surface 1223, and the inner bottom surface has a first lower guide surface 1224, a second lower guide surface 1225 and a third lower guide surface 1226.

The first moving unit 104 can be a gear, such as a gear with a knob, which is installed at a side edge of the base body 100 and the knob is protruded from a side of the base member 10. The second moving unit 112 can be a rack configured to be corresponsive to the gear and located on a side of the top surface of the pressing plate body 110. When the base member 10 is assembled with the pressing plate member 11, the gear matches the rack, and the first acute angles matches the second acute angles 1110, such that the slide seat 101 is movably inserted between the two opposite side walls of the activity area 111. In this way, the knob protruding from a side of the base member 10 can be used to rotate the first moving unit 104, in order to move the pressing plate member 11 for the adjustment of the assembling position. In addition, when the pressing plate member 11 and the fastener 12 are assembled by an assembling method including over-molding, adhesive bonding, ultrasonic welding, heated compression molding, or assembling component locking or riveting, the side periphery of the clamping part 120 and the plate sidewall 114 are securely combined, the periphery of the upper side of each flexible part 121 abuts against the plate sidewall 114, and two upper edge of two corresponding side of each clamping unit 122 abut against two opposite sides of the front part of the pressing plate body 110 (including the limit surface 1101). When the flipper 3 is inserted from the insert port and embedded between the pressing plate member 11 and the fastener 12, the peripheral parts on two sides of the flipper 3 are inserted into the slots 1220 through the guidance of the first to third upper guide surfaces 1221˜1223 and the first to third lower guide surfaces 1224˜1226, such that the section from an end of the flipper 3 to the position near the folding angle is accommodated between the pressing plate member 11 and the fastener 12. At this time, the flipper 3 touches the anti-slip unit 1200 to increase the frictional resistance between the flipper 3 and the clamping part 120, so as to enhance the installation tightness and reliability of the flipper 3.

In another implementation mode of this embodiment, a convex arc microstructure (not shown in the figure) is formed inside each slot 1220, configured to be corresponsive to each third lower guide surface 1226, and connected between each second upper guide surface 1222 and each third upper guide surface 1223 for improving the easiness of embedding the flipper 2 into each slot 1220, while achieving the effect of preventing the flipper 2 after being embedded from slipping off easily. In further consideration based on this arrangement, the diving fin flipper mounting mechanism 1 can be further provided with a fastening element (not shown in the figure), and the two opposite sides of the front of the pressing plate body 110 are provided with a fastening hole (not shown in the figure), the clamping unit 122 is provided with a fastening opening (not shown in the figure) corresponding to the position of the fastening hole, and the fastening element is connected to the fastening opening and locked in the fastening hole, in order to enhance the assembling tightness and adherence between the clamping unit 122 and the front part of the pressing plate body 110, and effectively improve the fastening of the flipper 3 assembled in the diving fin flipper mounting mechanism 1.

With reference to FIGS. 6 to 11B for the schematic views of the third preferred embodiment of the present disclosure, the diving fin flipper mounting mechanism 1 is provided to be installed under a fin heel 2 and movably assembled with a flipper 3, which includes a base member 10, a pressing plate member 11 and a fastener 12, and allows users to install/remove the flipper 3 on/from the fin heel 2 by using the corresponding engagement mechanism, limiting mechanism and moving mechanism between the base member 10, the pressing plate member 11 and the fastener 12. And users can flexibly adjust the relative installation position of the flipper 3 and the fin heel 2 as needed.

The base member 10 is provided to be installed under the fin heel 2, and the base member 10 includes a base body 100, two slide seats 101, a first groove 102, an axial seat 103 and a first moving unit 104. The base body 100 is a symmetrical body such as a rectangular body symmetrically sideway and having a long axis along its main body to facilitate subsequent assembly operations, and the front end of the base body 100 configured to be corresponsive to the toe direction of the fin heel 2, and its bottom surface can gradually decrease toward the top surface according to a curvature, so that the height of the front end of the base body 100 can be reduced smoothly to become smaller than the height of the central position of the base body 100. Each of the slide seats 101 is in a rectangular shape and its long axis corresponds to the long axis of the main body, and the slide seats 101 are located on two opposite sides of the base body 100 respectively, and the first groove 102 is concavely formed at the central position of the surface of the base body 100 between the slide seats 101, wherein a side of each slide seat 101 away from the first groove 102 is tilted outward at a first angle to form an inclined surface, such that the side of each slide seat 101 and the bottom surface of each slide seat define a first acute angle. The axial seat 103 is configured to be corresponsive to the first groove 102 and located on another side of the base body 100 installed on two sides of the slide seats 101 separately, and the axial seat 103 has a passing opening 1030, and the first moving unit 104 can be an actuating lever.

The pressing plate member 11 is provided to be assembled with the base member 10, and the pressing plate member 11 includes a pressing plate body 110, an activity area 111, a second moving unit 112, a second groove 113 and a plate sidewall 114. An end of the pressing plate body 110 is configured to be corresponsive to the flipper 3 and has a contour similar to the contour of the mounting part and paddling part of the flipper 3 for the attachment with the flipper 3, and the activity area 111 is concavely formed on the top surface of the pressing plate body 110. The second moving unit 112 can be a slide block having a perforation 1120, configured to be corresponsive to the first groove 102, and located at the central position of a side of the activity area. The second groove 113 is concavely formed on the top surface of the activity area 111, the second groove 113 is provided for passing the second moving unit 112 and may be integrated with the space of the perforation 1120 or separated from the space of the perforation 1120, and the side walls on two opposite sides of the activity area 111 are tilted towards the center at a second angle corresponding to the first angle, such that the bottom surface of the activity area 111 and each side wall define a second acute angle 1110. The front end of the pressing plate body 110 is bent downward at a limit folding angle 1100 to form a limit surface 1101, for limiting and positioning of the insert position of the flipper 3 corresponding to the folding angle of the flipper 3, and the plate sidewall 114 is disposed around the periphery of the rear bottom surface of the pressing plate body 110.

The fastener 12 is provided for assembling with the pressing plate member 11, and the fastener 12 includes a clamping part 120, a pair of flexible parts 121 and a pair of clamping units 122. Two opposite sides of an end of the clamping part 120 are extended to from the flexible part 121, and an end of each flexible part 121 is connected to one of the clamping units 122. The flexible part 121 has better elasticity than the main body of the clamping part 120 and the pair of clamping units 122 and allows limited deformation in any direction, and an anti-slip unit 1200 can be provided on the top surface a side of the clamping part 120 to increase frictional resistance. The corresponding inner sides of the pair of clamping units 122 are respectively provided with a slot 1220. Each slot 1220 is extended from the side wall of each clamping unit 122 to the port of each clamping unit 122 to form an insert port, and the inner top surface of the slot 1220 is provided with a first upper guide surface 1221, a second upper guide surface 1222 and a third upper guide surface 1223, and the inner bottom surface of the slot 1220 has a first lower guide surface 1224, a second lower guide surface 1225 and a third lower guide surface 1226.

When the fastener 12 is assembled with the pressing plate member 11, the clamping part 120 and the plate sidewall 114 are securely combined, and the upper edges of the corresponding two sides of each clamping unit 122 respectively abut against the front section of the pressing plate body 110 including the opposite sides of the limit surface 1101. Through the upper and lower guide surfaces 1221˜1226 of each of the pair of slots 1220, the limit surface 1101 and the front section of the pressing plate body 110, a space can be formed to limit the front and rear, and up and down displacement of the flipper 3. At the same time, the plate sidewall 114 is connected to the side periphery of the clamping part 120 and the upper periphery of the pair of flexible parts 121 and together with the pressing plate body 110, a space is formed that can limit the left and right displacement of the mounting part of the flipper 3. In this way, a flipper accommodation space is formed between the fastener 12 and the pressing plate member 11, which can limit the range of the front and rear, up and down, left and right movements of the flipper 3, in order to minimize the amount of clearance after the flipper 3 is connected and ensure the stability of the diving fin and the reliability of the product. Then, when the pressing plate member 11 is assembled with the base member 10, each slide seat 101 is movably inserted between the two opposite side walls of the activity area 111 through each first acute angle and each second acute angle 1110, and the slide block 112 is embedded into the first groove 102, and the actuating lever is embedded into the passing opening 1030 and the perforation 1120. Therefore, when the pair of slide seats 101 are movably accommodated in the activity area 111, through the corresponding assembly of the first moving unit 104 and the second moving unit 112, a relative displacement is generated for adjusting the relative position between the pressing plate member 11 and the base member 10.

In FIGS. 12A and 12B, when the flipper 3 is inserted into the pair of insert ports from two sides, the flipper 3 is guided into the insert ports by the guiding surfaces 1221˜1226, until the peripheral parts on both sides of the flipper 3 adjacent to the folding angle are fully inserted into the slot 1220 and firmly placed in the flipper accommodation space. In this embodiment, a convex arc microstructure is formed between the second lower guide surface 1225 and the third lower guide surface 1226, as well as the second upper guide surface 1222 and the third upper guide surface 1223, for guiding the flipper 3 to move forward smoothly when the flipper 3 is embedded between the pressing plate member 11 and the fastener 12, in order to improve the ease and smoothness of insertion, while preventing the flipper 2 from slipping off easily after insertion. In addition, the actuating lever can be a feeding screw and has a feeding part (not shown in the figure), and the side wall inside the perforation 1120 corresponding to the feeding part is provided with a thread (not shown in the figure). The mechanism principle between the feeding part and the thread is used for the actuating lever to rotate, so that the actuating lever can produce relative displacement with the slide block through rotation to define a limited movement range of the pressing plate body 110 and the base body 100, in order to adjust the assembling position of the flipper 3.

Based on the above, the operation of assembling the flipper 3 with the fin heel 2 using the diving fin flipper mounting mechanism 1 is completed, so uses can rotate the actuating lever according to personal needs or usage habits and utilize the feeding part to push the slide seats 101 to slide between the pair of side walls of the activity area 111 in order to adjust the relative position between the pressing plate member 11 and the base member 10, and to adjust the position where the flipper 3 is assembled with the fin heel 2 to provide a better force applying position for the users to apply force in the water after wearing the diving fin, so as to improve the smoothness of kicking in the water and reduce oxygen consumption. The main effect is to increase the amount of exercise and improve the efficiency of movements, and may also reduce the degree and incidence of sports injuries. With reference to FIGS. 13A to 13D, based on the technical principle of kicking the diving fin, when performing a forward kick, the user exerts force from the thigh, and then the knee bends slightly in a natural manner according to the resistance, and then transfers the force to the ankle through the calf. At this time, the ankle serves as the fulcrum between the leg and the flipper 3, so it must be supported as much as possible to keep the instep in a flattened position to ensure that the force can be fully transmitted. When the kicking force is transmitted to the flipper 3 through the fin heel 2 and the diving fin flipper mounting mechanism 1, the position of the flipper 3 of most conventional diving fins is mostly close to the state (A) or state (B) in the figure, the extension axis FO of the paddling part is close to the tibia of the calf. The shortcoming of the conventional diving fins is that when the paddling part of the flipper 3 is subjected to water resistance, its load point is farther away from the ankle and further away from the central axis LO of the calf, causing the ankle to bear a large moment, which is not conducive to the continuation of movement of the movement. Moreover, if the instep cannot be maintained flat due to improper technical implementation, the tibialis anterior muscle of the leg will also bear greater external force, causing leg fatigue and resulting in a decrease in movement efficiency. In other words, a better position of the flipper 3 should be as shown in state (C). The extension axis FO of the paddling part of the flipper 3 should be as parallel as possible to the central axis LO of the calf, so the flipper 3, the fin heel 2 and the three parts of the user's legs form a whole body to provide better structural strength. In this way, the moment endured by the ankle will be minimized. At this time, the paddling part of the flipper 3 is a part of the structure extending from the ankle. It can use the natural posture of the calf and thigh more smoothly to fully transmit the kicking force to the flipper 3, so as to help improving movement efficiency. However, each user's body shape and leg size vary, and the flipper 3 and the fin heel 2 used by each user are also different in size, so the above-mentioned optimal flipper position cannot be accurately defined. Therefore, the discloser of the present disclosure proposes the diving fin flipper mounting mechanism 1 in accordance with the present disclosure for users to test and adjust the position of the pressing plate member 11 relative to the base member 10 in order to find the best relative position of the flipper 3 and the fin heel 2.

It is noteworthy that the base member 10 is installed under the fin heel 2 by means of the connection of the base body 100. As far as commercial applications are concerned, when the product is provided, the fin heel 2 can be provided in a form that is directly connected to the base member 10. Of course, it can also be provided in a form in which the fin heel 2 and the base member 10 are separated, to facilitate manufacturing and production, or provide options for consumers to choose. After the fastener 12 is connected to the pressing plate pressing member 11, the plate member 11 is connected to the base member 10. Considering the needs of commercial applications, the pressing plate member 11 and the fastener 12 can be connected by a method including over-molding, adhesive bonding, ultrasonic welding, heated compression molding, or assembling component locking or riveting. The pressing plate member 11 and the fastener 12 can be provided to consumers in an integrated form, or in form of independent components, but the present disclosure is not limited either one of the above arrangements. In addition, the guide surfaces such as the first upper guide surface 1221, the second upper guide surface 1222, the third upper guide surface 1223, the first lower guide surface 1224, the second lower guide surface 1225 and the third lower guide surface 1226, etc. are not limited to a flat surface. Depending on the product type, product application scope and past research experience, the design of arc or curved surface can be used, and each guide surface is not restricted to the concept of upper and lower planes corresponding to a set. The positions of the upper and lower guide surfaces are not limited to be precisely aligned or specially arranged.

Furthermore, the present disclosure further takes users'intense diving activities such as competitive diving into consideration, and forces exerted on the flipper 3 may cause a gap between the pressing plate member 11 and the fastener 12 that may affect the feeling of the kicking feet. Therefore, the diving fin flipper mounting mechanism 1 further provides a fastening element 13, as shown in FIG. 14, and a fastening hole 1102 separately formed on two opposite sides of the front of the pressing plate body 110, and a fastening opening 1227 formed on the clamping unit 122 and configured to be corresponsive to the fastening hole 1102. The fastening element 13, such as a screw, a snap fastener, a clamp, a pin or a removable semi-permanent fastening part, etc., is passed and connected to the fastening opening 1227 and locked into the fastening hole 1102 in order to secure the assembling tightness and adherence between the clamping unit 122 and the front part of the pressing plate body 110, and minimize the clearance to strengthen the effect of fastening the flipper 3 and improve product application scope and market satisfaction. The fastening element 13, such as screw, snap fastener, clamp, pin and or removable semi-permanent fastening parts, etc. is passed through the fastening opening 1227 and locked into the fastening hole 1102, thereby securing the assembly tightness and adherence between the clamping unit 122 and the front part of the pressing plate body 110, minimizing the amount of clearance to strengthen the connection of the flipper 3, and enhancing product application scope and market satisfaction.