CN110856765A - Rigidity-variable flipper capable of manually adjusting propelling power - Google Patents
Rigidity-variable flipper capable of manually adjusting propelling power Download PDFInfo
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- CN110856765A CN110856765A CN201810976063.9A CN201810976063A CN110856765A CN 110856765 A CN110856765 A CN 110856765A CN 201810976063 A CN201810976063 A CN 201810976063A CN 110856765 A CN110856765 A CN 110856765A
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B35/00—Swimming framework with driving mechanisms operated by the swimmer or by a motor
- A63B35/02—Swimming framework with driving mechanisms operated by the swimmer or by a motor shaped like a fish tail
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B31/00—Swimming aids
- A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
- A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
- A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2208/00—Characteristics or parameters related to the user or player
- A63B2208/03—Characteristics or parameters related to the user or player the user being in water
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/60—Apparatus used in water
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses a variable rigidity fin for manually adjusting propulsive power, which comprises a fin body, wherein the fin body comprises a fin plate, a longitudinal keel and a shoe-shaped cabin for accommodating feet of a swimmer, the longitudinal keel is positioned on the two longitudinal sides or the middle area of the fin plate, the fin plate and the shoe-shaped cabin are butted into a whole front and back, at least one of the longitudinal keels is the variable rigidity longitudinal keel, a cross slot, an X-shaped slot, a Y-shaped slot or a Chinese character 'mi' slot for accommodating a normal unequal rigidity rod is arranged in the variable rigidity longitudinal keel along the longitudinal axis direction of the longitudinal keel, and the specific types of the fin generally comprise a double-foot single fin, a double-foot double fin, a bionic tail fin and a variable tail fin; the longitudinal bending stiffness of the normal unequal stiffness rods is different in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal stiffness rods, the cross section of the normal unequal stiffness rods in the direction perpendicular to the longitudinal axis is usually non-circular, and the longitudinal axis of the normal unequal stiffness rods is a curve or a straight line.
Description
Technical Field
The invention relates to the industries of swimming equipment and diving equipment, in particular to a rigidity-variable flipper with manually adjusted propelling power, which is mainly used for swimming and diving sports at present.
Background
In modern society, swimming and diving sports are increasingly popularized, various swimming equipment and diving equipment are layered endlessly, and most of the swimming equipment and diving equipment use flippers as main propulsion tools for advancing, wherein the common flippers are respectively worn on two feet, the two flippers are worn on the two feet, the bionic tail fin is worn on the two feet, the two flippers are driving forces for advancing by alternate pumping of the two legs of a swimmer, and the two flippers and the bionic tail fin are driving forces for advancing by synchronous pumping of the two legs of the swimmer.
The swimmer can obtain the best propelling force only by beating water at the optimal beating frequency no matter double-fin, double-fin and single-fin or bionic tail fin; when a swimmer wishes to change the speed of swimming, such as by pumping water at a higher frequency for fast swimming or at a lower frequency for slow swimming, the efficiency of propulsion decreases, especially when the swimmer pumps water at a higher frequency, which is not only inefficient but also quickly fatiguing.
Disclosure of Invention
Aiming at the defects that the main propulsion tools of the prior swimming equipment and diving equipment, namely double-foot double-web, double-foot single-web and bionic tail fin, do not well solve the problem of higher propulsion efficiency in two states of high-speed quick swimming and low-speed slow swimming, the invention provides a variable-rigidity foot web for manually adjusting propulsion power by combining the structural characteristics of human motion and scientifically and reasonably applying human engineering The insertion is changed into the insertion parallel to the fin plate, and the longitudinal bending rigidity of the variable rigidity fin for manually adjusting the propelling power is reduced, so that the propelling power can be adjusted as required; the swimming pool can effectively improve the proportion of useful work no matter what frequency the swimmer takes water, furthest improve the advancing efficiency and the swimming speed of swimming and diving, save physical strength and fully develop the advancing potential of the swimmer in water; in addition, the swimmer can effectively reduce the fatigue feeling generated when continuously patrolling for a long distance and a long time through variable-speed tour.
The invention specifically adopts the following scheme:
a fin of variable stiffness for manually adjusting propulsive power, comprising a fin body including a fin panel, at least one longitudinal keel and at least one shoe-shaped compartment for accommodating a swimmer's foot, characterized in that: the fin board and the shoe-shaped cabin are butted into a whole, at least one longitudinal keel is a variable-rigidity longitudinal keel, and the specific types of the flippers include but are not limited to a double-foot single fin with one foot, double-foot double fins with one foot, a bionic tail fin with one foot, a variable tail fin and a dolphin fin with one foot.
And a cross groove, an X-shaped groove, a Y-shaped groove or a cross groove for accommodating the normal unequal-rigidity rods are formed in the variable-rigidity longitudinal keel along the longitudinal axis direction of the variable-rigidity longitudinal keel.
The longitudinal bending stiffness of the normal unequal stiffness rods is different in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal stiffness rods, and the longitudinal axis of the normal unequal stiffness rods is a curve or a straight line.
The cross-section perpendicular to the longitudinal axis of the unequal normal stiffness rods is generally non-circular.
The specific shape of the cross section of the longitudinal axis vertical direction of the normal unequal stiffness rod comprises but is not limited to a rectangle, an ellipse, an olive shape, a rhombus, a parallelogram, a waist drum shape, a cross shape, an X shape, a Y shape and a Chinese character 'mi', and correspondingly, the specific shape of the cross section of the cross groove, the X-shaped groove, the Y-shaped groove or the Chinese character 'mi' shaped groove for accommodating the normal unequal stiffness rod is compatible with the specific shape of the cross section of the normal unequal stiffness rod and can insert the normal unequal stiffness rod into the rod in more than two insertion directions so as to realize the function of different longitudinal bending stiffness in different insertion directions.
The specific shape of the cross section is a cross-shaped, X-shaped, Y-shaped or m-shaped normal unequal stiffness rod, more than 2 normal unequal stiffness rods with different materials or different longitudinal bending stiffnesses and with rectangular or parallelogram cross sections are usually used, the normal unequal stiffness rods are bonded or physically combined into a whole in the direction that the longitudinal axes are parallel to each other, so as to realize the function of different longitudinal bending stiffnesses in different insertion directions, and the specific mode of physical combination comprises but is not limited to pressing under the condition of temperature rise and step casting of more than two materials.
For the normal unequal rigidity rods with the cross sections in the shapes of rectangle, ellipse, olive, rhombus, parallelogram or waist drum, the insertion states of the rods into the cross grooves in the longitudinal keels with variable rigidity are three types: inserted in a direction perpendicular to the web plate, inserted in a direction parallel to the web plate, and not inserted; for the normal unequal rigidity rods with the specific shapes of the cross sections being rectangular, oval, olivary, rhombic, parallelogram or waist drum shape, the insertion states of the rods into the cross grooves in the longitudinal keels with variable rigidity are four types: inserted perpendicularly to the web plate, inserted parallel to the web plate, inserted obliquely and not inserted; the long edge or long axis of the cross section perpendicular to the longitudinal axis of the webbed board is inserted, namely the long edge or long axis of the cross section perpendicular to the longitudinal axis of the normal unequal-stiffness rod is perpendicular to the webbed board, the long edge or long axis of the cross section parallel to the webbed board is inserted, namely the long edge or long axis of the cross section perpendicular to the longitudinal axis of the normal unequal-stiffness rod is parallel to the webbed board, and the long edge or long axis of the cross section perpendicular to the longitudinal axis of the normal unequal-stiffness; the influence of the state that the normal unequal rigidity rod is inserted into the variable rigidity longitudinal keel on the longitudinal bending rigidity and the propelling power of the variable rigidity flipper for manually adjusting the propelling power is as follows: the longitudinal bending rigidity and the propulsion power which are inserted perpendicularly to the web plate are the highest, the longitudinal bending rigidity and the propulsion power which are inserted obliquely are the second, the longitudinal bending rigidity and the propulsion power which are inserted parallel to the web plate are the third, and the longitudinal bending rigidity and the propulsion power which are not inserted are the lowest. In the same way, the normal unequal-rigidity rods are inserted into the X-shaped grooves in the variable-rigidity longitudinal keels in three states, and the normal unequal-rigidity rods are inserted into the Y-shaped grooves in the variable-rigidity longitudinal keels in four states.
For the cross slot or the cross slot containing the normal unequal rigidity rod, a swimmer can insert the normal unequal rigidity rod with the rectangular cross section into the variable rigidity longitudinal keel from the state of being parallel to a web plate to the state of being perpendicular to the web plate before high-frequency water-beating high-speed fast trip, increase the longitudinal bending rigidity of the variable rigidity flipper for manually adjusting the propelling power, and also can insert the normal unequal rigidity rod with the rectangular cross section into the variable rigidity longitudinal keel from the state of being perpendicular to the web plate to the state of being parallel to the web plate to the state of being perpendicular to the web plate to the state of being parallel to the web plate before low-frequency water-beating low-speed slow trip, decrease the longitudinal bending rigidity of the variable rigidity flipper for manually adjusting the propelling power, thereby adjusting the propelling power of the swimmer according to requirements.
The swimmer can not only make a high-frequency trip at a high speed, but also make a low-frequency trip at a low speed, no matter what frequency the swimmer takes water, the variable stiffness flippers for manually adjusting the propulsion power can be adjusted to the proper longitudinal bending stiffness in advance, thereby effectively improving the proportion of useful work, furthest improving the advancing efficiency and the swimming speed of swimming and diving, saving physical strength, fully giving play to the advancing potential of the swimmer in water, and finally achieving the purpose of long-time, long-distance and continuous high-speed tour. In addition, the swimmer can effectively reduce the fatigue feeling generated when continuously patrolling for a long distance and a long time through variable-speed tour.
The trend of the cross sectional area of the normal unequal stiffness rod along the direction of the longitudinal axis of the normal unequal stiffness rod is usually gradually reduced or basically unchanged from the front end of the traveling direction of the swimmer to the rear end of the traveling direction of the swimmer, and can also be gradually increased, and the trend of the cross-shaped groove or the cross-shaped groove in the corresponding variable stiffness longitudinal keel along the direction of the longitudinal axis of the cross-shaped groove or the cross-shaped groove is the same as the trend of the cross sectional area of the normal unequal stiffness rod accommodated in the cross-shaped groove or the.
The cross section of the groove for accommodating the normal unequal rigidity rod can be specially shaped into other grooves which can realize the same normal unequal rigidity characteristic besides a cross groove, an X-shaped groove, a Y-shaped groove or a Chinese character 'mi' groove.
In the invention, the longitudinal keels of the double-foot single fin are usually two on the left and right and are respectively positioned on the two longitudinal sides of the web plate of the double-foot single fin, under the normal condition, the two longitudinal keels are both variable-rigidity longitudinal keels, and shoe-shaped cabins of the double-foot single fin are paired left and right and respectively accommodate the left foot and the right foot of a swimmer; the bionic tail fin is characterized in that the two longitudinal keels of the bionic tail fin are also a left longitudinal keel and a right longitudinal keel and are respectively positioned on the two longitudinal side edges of the left side and the right side of a fin plate of the bionic tail fin, and the two longitudinal keels are both variable-rigidity longitudinal keels under the common condition; the longitudinal keels of each web of the double-footed double-webbed are usually also two, left and right, respectively located on the two longitudinal sides of the left and right sides of each web of the double-footed double-webbed, in general, the four longitudinal keels are also variable-stiffness longitudinal keels, the shoe-shaped compartments of the double-footed double-webbed are also paired left and right, respectively, and also accommodate the left foot and the right foot of the swimmer, and the difference from the double-footed single-webbed is that the left and right shoe-shaped compartments of the double-footed double-webbed are mutually independent and respectively located on the left web and the right web of the double-footed double-webbed.
The variable tail fin comprises a main tail fin, a left tail fin and a right tail fin, wherein the left tail fin and the right tail fin are arranged on the left side and the right side of the main tail fin and are respectively hinged with the main tail fin; the swimmer can realize the function of adjusting the fin span width or the fin span area of the variable tail fin in the process of swinging the variable tail fin by synchronously rotating the ankle or asynchronously rotating the ankle, namely, the function of accelerating and decelerating or turning. The direction of travel of the swimmer is forward. The left tail fin comprises a left fin plate and a left longitudinal keel positioned on the longitudinal side edge of the left outer side of the left fin plate, the right tail fin comprises a right fin plate and a right longitudinal keel positioned on the longitudinal side edge of the right outer side of the right fin plate, and the left longitudinal keel and the right longitudinal keel are variable-rigidity longitudinal keels under the common condition.
Or, the variable tail fin comprises a tail fin fixing rod, a left tail fin and a right tail fin which are arranged on the left side and the right side of the tail fin fixing rod and are respectively hinged with the tail fin fixing rod, the left tail fin and the right tail fin are parallel to each other and are parallel to the water surface of the water area where the swimmer is located, the fin widening degree of the left tail fin and the right tail fin is variable or the fin spreading area is variable, the front end of the tail fin fixing rod is fixed between the legs or the feet of the swimmer, 2 variable fin pedals for fixing the left foot and the right foot of the swimmer are respectively arranged on the left side and the right side of the middle area of the tail fin fixing rod, the 2 variable fin pedals are respectively hinged with the tail fin fixing rod through respective hinge shafts, and the 2 variable fin pedals are respectively connected with the left tail fin and the right tail fin through respective linkage elements in a same side; the swimmer can realize the function of adjusting the fin span width or the fin span area of the variable tail fin in the process of swinging the variable tail fin by synchronously rotating the ankle or asynchronously rotating the ankle, namely, the function of accelerating and decelerating or turning. The direction of travel of the swimmer is forward. The left tail fin comprises a left fin plate and a left longitudinal keel positioned on the longitudinal side edge of the left outer side of the left fin plate, the right tail fin comprises a right fin plate and a right longitudinal keel positioned on the longitudinal side edge of the right outer side of the right fin plate, and the left longitudinal keel and the right longitudinal keel are variable-rigidity longitudinal keels under the common condition.
The fin widening degree is similar to the wingspan width of birds, and the fin spreading area is similar to the wingspan area of birds.
In the invention, the materials for manufacturing the web plate and the longitudinal keel comprise but are not limited to high-elasticity rubber, plastic, polyurethane, silica gel, glass fiber reinforced plastic, carbon fiber, thin-wall steel, aluminum alloy, titanium alloy, thin-wall copper alloy, toughened glass, bamboo, wood or nylon, and the web plate and the longitudinal keel are light and high in strength so as to meet the requirements of long-time and heavy-load work.
The material for making the web plate and the longitudinal keel can also be a material obtained by bonding or physically combining more than two materials in the previous section into a whole, for example, the web plate can be made by using glass fiber reinforced plastics or carbon fibers as a substrate, and wrapping high-elastic rubber outside the substrate, and the physical combination mode includes but is not limited to pressing under a temperature rise condition and step casting of more than two materials.
The web plate and the longitudinal keel can be made of the same material or different materials.
In the present invention, the material for making the web panel and the longitudinal keel may be high elastic rubber, plastic, polyurethane or silica gel containing one or more layers of reinforcing layers, usually a woven layer with cloth or metal wire to enhance the deformation resistance of the web panel and the longitudinal keel.
The variable-rigidity longitudinal keel is provided with a blocking cover for blocking the normal unequal-rigidity rods at the ends of the cross groove, the X-shaped groove, the Y-shaped groove or the cross groove for accommodating the normal unequal-rigidity rods, so that the normal unequal-rigidity rods are prevented from being separated. The connection of the blanking cap to the variable stiffness longitudinal runner is typically a threaded connection.
The variable-rigidity longitudinal keel can be replaced by a hollow tube, a replaceable variable-rigidity rod is contained in the hollow tube, and the end of the variable-rigidity longitudinal keel, which contains the variable-rigidity rod, is also provided with a blocking cover for blocking the variable-rigidity rod, so that the variable-rigidity rod is prevented from falling off.
Usually more than 2 variable stiffness rods with different material hardness or different cross-sectional area form a group of variable stiffness rod family for swimmers to choose and match according to the required longitudinal bending stiffness and propulsion power of the flipper.
The variable-rigidity rod is made of materials including but not limited to high-elasticity rubber, plastics, polyurethane, silica gel, glass fiber reinforced plastics, carbon fibers, thin-wall steel, aluminum alloy, titanium alloy, thin-wall copper alloy, toughened glass, bamboo, wood or nylon, and is light and high in strength so as to meet the requirements of long-time and heavy-load work. The variable stiffness rods in the same rod family can be made of materials with different hardness or the same material with different cross-sectional areas.
The change trend of the cross section area of the hollow pipe along the direction of the longitudinal axis of the hollow pipe is usually gradually reduced or basically unchanged from the front end of the traveling direction of the swimmer to the rear end of the traveling direction of the swimmer, and can also be gradually increased; the cross section of the longitudinal axis of the hollow tube in the vertical direction is generally circular and can also be non-circular; the variable stiffness rod inside the corresponding hollow tube has the same trend of changing the cross-sectional area along the longitudinal axis direction as the cross-sectional area of the hollow tube surrounding the variable stiffness rod.
The invention has the advantages that:
1. according to the variable-rigidity fin capable of manually adjusting propelling power, the longitudinal keel of the variable-rigidity fin is internally provided with the cross groove or the cross groove for accommodating the normal unequal-rigidity rod along the longitudinal axis direction of the longitudinal keel, the normal unequal-rigidity rod is arranged in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the longitudinal keel, and the longitudinal bending rigidity of the normal unequal-rigidity rod is different; the state that the normal unequal rigidity rod with the rectangular cross section is inserted into the variable rigidity longitudinal keel is changed from being parallel to the webbed board to being perpendicular to the webbed board, the longitudinal bending rigidity and the propelling power of the variable rigidity flipper for manually adjusting the propelling power are increased, the state that the normal unequal rigidity rod with the rectangular cross section is inserted into the variable rigidity longitudinal keel is changed from being perpendicular to the webbed board to being parallel to the webbed board, and the longitudinal bending rigidity and the propelling power of the variable rigidity flipper for manually adjusting the propelling power are reduced, so that the propelling power of the variable rigidity flipper can be adjusted according to requirements.
2. The variable-rigidity longitudinal keel can be replaced by a hollow tube, a replaceable variable-rigidity rod is contained in the hollow tube, a blocking cover for blocking the variable-rigidity rod is also arranged at the end of the variable-rigidity longitudinal keel for containing the variable-rigidity rod, and more than 2 variable-rigidity rods with different material hardness or different cross-sectional areas are usually used for forming a group of variable-rigidity rods, so that a swimmer can select and match the longitudinal bending rigidity and the propelling power required by the flippers.
3. The swimmer can beat water at high frequency and swim at high speed or at low frequency and swim at low speed by using the flipper, and the variable-rigidity flipper capable of manually adjusting the propelling power can be adjusted to be suitable for longitudinal bending rigidity in advance no matter what frequency the swimmer beats water at, so that the proportion of useful work is effectively improved, the advancing efficiency and the swimming speed of swimming and diving are improved to the maximum extent, the physical strength is saved, the advancing potential of the swimmer in water is fully exerted, and the purpose of long-time, long-distance, continuous and high-speed tour is finally achieved. In addition, the swimmer can effectively reduce the fatigue feeling generated when continuously patrolling for a long distance and a long time through variable-speed tour.
4. The invention has the advantages of light structure, reliable work, simple corresponding manufacturing process and low cost, and is convenient for large-scale production and popularization and use.
Drawings
Fig. 1 is a schematic structural outline of one of the two flippers of the invention, wherein a normal unequal rigidity bar with a rectangular cross section is arranged in a cross slot of the variable rigidity longitudinal keel.
Fig. 2 is a schematic structural diagram of the appearance of one of the two flippers of the invention, wherein a normal unequal rigidity rod with a cross-shaped cross section is arranged in a cross groove of the variable rigidity longitudinal keel.
In the figure: 1. a fin body; 101. a web plate; 102. a variable stiffness longitudinal keel; 103. a shoe-shaped compartment; 104. a fin band; 105. normal unequal stiffness rods; 106. and (7) blocking the cover.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, the cross slot of the variable stiffness longitudinal keel 102 of the invention is fitted with a cross-section of rectangular normal unequal stiffness bar 105 for the display of the configuration of one of the two flippers.
Fig. 1 shows a fin body 1 of one fin of variable stiffness of said manual propulsion power, which fin body 1 mainly comprises a fin panel 101, a longitudinal keel 102 of variable stiffness, a shoe-shaped compartment 103, a fin band 104, a normal unequal stiffness bar 105, and a blanking cover 106.
The normal unequal stiffness rods 105 in fig. 1 are in a partially extracted state.
The longitudinal keels on both longitudinal sides of the fin panel 101 on both left and right sides in fig. 1 are variable stiffness longitudinal keels 102.
The tendency of the normal unequal stiffness bars 105 to change in cross-sectional area along their longitudinal axis gradually decreases from the forward end of the swimmer's direction of travel to the rearward end of the swimmer's direction of travel, and the tendency of the cross-sectional area along their longitudinal axis of the cross-slots in the respective variable stiffness longitudinal keels 102 is the same as the tendency of the cross-sectional area of the normal unequal stiffness bars 105 contained therein.
The webbed foot band 104 is used for fastening the webbed foot body 1 to the heel, and is also called a frog lace, a heel band and an annular bandage.
The cross-sectional specific shape perpendicular to the longitudinal axis of the normal unequal stiffness rods 105 in fig. 1 is rectangular; the normal unequal rigidity rods 105 are arranged in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal rigidity rods 105, and the longitudinal bending rigidity of the normal unequal rigidity rods 105 is different; accordingly, the detailed shape of the cross-section of the cross-slot receiving the normal unequal stiffness rod 105 is compatible with the rectangular cross-sectional shape of the normal unequal stiffness rod 105 described above and the normal unequal stiffness rod 105 can be inserted into itself in both insertion directions parallel to the fin 101 and perpendicular to the fin 101 to achieve the function of different longitudinal bending stiffness in different insertion directions. The normal unequal stiffness bar 105 in fig. 1 is inserted into the cross slot of the variable stiffness longitudinal keel 102 in a direction parallel to the webbed board 101.
As shown in fig. 2, the cross slot of the longitudinal keel 102 of variable stiffness of the invention is fitted with a cross-section of one of the two flippers of a rod 105 of unequal normal stiffness with a cross-shaped cross-section.
Fig. 2 shows the fin body 1 of one fin of variable stiffness of said manual propulsion power, which fin body 1 mainly comprises a fin panel 101, a longitudinal keel 102 of variable stiffness, a shoe-shaped compartment 103, a fin band 104, a normal unequal stiffness bar 105, and a blanking cover 106.
The normal unequal stiffness rods 105 in fig. 2 are in a partially extracted state.
The longitudinal keels on both longitudinal sides of the fin panel 101 on both left and right sides in fig. 2 are variable stiffness longitudinal keels 102.
The tendency of the normal unequal stiffness bars 105 to change in cross-sectional area along their longitudinal axis gradually decreases from the forward end of the swimmer's direction of travel to the rearward end of the swimmer's direction of travel, and the tendency of the cross-sectional area along their longitudinal axis of the cross-slots in the respective variable stiffness longitudinal keels 102 is the same as the tendency of the cross-sectional area of the normal unequal stiffness bars 105 contained therein.
The webbed foot band 104 is used for fastening the webbed foot body 1 to the heel, and is also called a frog lace, a heel band and an annular bandage.
The cross-sectional specific shape of the normal unequal stiffness rods 105 in the vertical direction of the longitudinal axis in fig. 2 is a cross; the normal unequal rigidity rods 105 are arranged in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal rigidity rods 105, and the longitudinal bending rigidity of the normal unequal rigidity rods 105 is different; accordingly, the specific shape of the cross section of the cross-shaped groove for accommodating the normal unequal rigidity rods 105 is compatible with the cross-shaped cross section of the normal unequal rigidity rods 105, and the normal unequal rigidity rods 105 can be inserted into the cross-shaped groove in two insertion directions, namely a large longitudinal bending rigidity insertion direction and a small longitudinal bending rigidity insertion direction, so that the function of different longitudinal bending rigidities in different insertion directions can be realized.
The cross-section of the normal unequal stiffness rods 105 in the cross shape in fig. 2 is formed by bonding or physically combining more than 2 normal unequal stiffness rods with rectangular cross-section and different materials or different longitudinal bending stiffnesses in the direction that the longitudinal axes are parallel to each other, wherein the cross-section of the normal unequal stiffness rods 105 in the cross shape has two insertion directions, namely a large longitudinal bending stiffness insertion direction and a small longitudinal bending stiffness insertion direction, and the physical combination mode includes but is not limited to pressing under a temperature rise condition and step casting of more than two materials.
The specific embodiment of the invention is as follows:
the first embodiment is as follows: as shown in figure 1, the cross slot of the variable stiffness longitudinal keel 102 of the invention houses one of the two flippers of a normally unequal stiffness bar 105 of rectangular cross section.
Fig. 1 shows a fin body 1 of one fin of variable stiffness of said manual propulsion power, which fin body 1 mainly comprises a fin panel 101, a longitudinal keel 102 of variable stiffness, a shoe-shaped compartment 103, a fin band 104, a normal unequal stiffness bar 105, and a blanking cover 106.
The normal unequal stiffness rods 105 in fig. 1 are in a partially extracted state.
The longitudinal keels on both longitudinal sides of the fin panel 101 on both left and right sides in fig. 1 are variable stiffness longitudinal keels 102.
The tendency of the normal unequal stiffness bars 105 to change in cross-sectional area along their longitudinal axis gradually decreases from the forward end of the swimmer's direction of travel to the rearward end of the swimmer's direction of travel, and the tendency of the cross-sectional area along their longitudinal axis of the cross-slots in the respective variable stiffness longitudinal keels 102 is the same as the tendency of the cross-sectional area of the normal unequal stiffness bars 105 contained therein.
The webbed foot band 104 is used for fastening the webbed foot body 1 to the heel, and is also called a frog lace, a heel band and an annular bandage.
The cross-sectional specific shape perpendicular to the longitudinal axis of the normal unequal stiffness rods 105 in fig. 1 is rectangular; the normal unequal rigidity rods 105 are arranged in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal rigidity rods 105, and the longitudinal bending rigidity of the normal unequal rigidity rods 105 is different; accordingly, the detailed shape of the cross-section of the cross-slot receiving the normal unequal stiffness rod 105 is compatible with the rectangular cross-sectional shape of the normal unequal stiffness rod 105 described above and the normal unequal stiffness rod 105 can be inserted into itself in both insertion directions parallel to the fin 101 and perpendicular to the fin 101 to achieve the function of different longitudinal bending stiffness in different insertion directions. The normal unequal stiffness bar 105 in fig. 1 is inserted into the cross slot of the variable stiffness longitudinal keel 102 in a direction parallel to the webbed board 101.
For the normal unequal stiffness bar 105 with a specific rectangular cross-section, there are three states of insertion into the cross slot in the variable stiffness longitudinal keel 102: inserted perpendicular to the fin plate 101, inserted parallel to the fin plate 101, and not inserted; the influence of the state of the normal unequal stiffness rod 105 inserted into the variable stiffness longitudinal keel 102 on the longitudinal bending stiffness and propulsion power of the manually adjusted propulsion power variable stiffness flipper is as follows: the longitudinal bending stiffness and the propulsion power are highest when the fin panel 101 is inserted perpendicularly, the longitudinal bending stiffness and the propulsion power are second highest when the fin panel 101 is inserted parallel, and the longitudinal bending stiffness and the propulsion power are lowest when the fin panel is not inserted.
For the cross slot containing the normal unequal stiffness bar 105, the swimmer can insert the normal unequal stiffness bar 105 with the rectangular cross section into the variable stiffness longitudinal keel 102 from the state of being parallel to the fin plate 101 to the state of being perpendicular to the fin plate 101 before high-frequency water-striking high-speed fast trip, increase the longitudinal bending stiffness of the variable stiffness flipper for manually adjusting the propulsion power, and also can insert the normal unequal stiffness bar 105 with the rectangular cross section into the variable stiffness longitudinal keel 102 from the state of being perpendicular to the fin plate 101 to the state of being parallel to the fin plate 101 before low-frequency water-striking low-speed slow trip, decrease the longitudinal bending stiffness of the variable stiffness flipper for manually adjusting the propulsion power, thereby adjusting the propulsion power of the swimmer as required.
The swimmer can not only make a high-frequency trip at a high speed, but also make a low-frequency trip at a low speed, no matter what frequency the swimmer takes water, the variable stiffness flippers for manually adjusting the propulsion power can be adjusted to the proper longitudinal bending stiffness in advance, thereby effectively improving the proportion of useful work, furthest improving the advancing efficiency and the swimming speed of swimming and diving, saving physical strength, fully giving play to the advancing potential of the swimmer in water, and finally achieving the purpose of long-time, long-distance and continuous high-speed tour. In addition, the swimmer can effectively reduce the fatigue feeling generated when continuously patrolling for a long distance and a long time through variable-speed tour.
Example two: as shown in fig. 2, the cross slot of the variable stiffness longitudinal keel 102 of the invention houses one of the two flippers of a normally unequal stiffness bar 105 cross-shaped in cross section.
Fig. 2 shows the fin body 1 of one fin of variable stiffness of said manual propulsion power, which fin body 1 mainly comprises a fin panel 101, a longitudinal keel 102 of variable stiffness, a shoe-shaped compartment 103, a fin band 104, a normal unequal stiffness bar 105, and a blanking cover 106.
The normal unequal stiffness rods 105 in fig. 2 are in a partially extracted state.
The longitudinal keels on both longitudinal sides of the fin panel 101 on both left and right sides in fig. 2 are variable stiffness longitudinal keels 102.
The tendency of the normal unequal stiffness bars 105 to change in cross-sectional area along their longitudinal axis gradually decreases from the forward end of the swimmer's direction of travel to the rearward end of the swimmer's direction of travel, and the tendency of the cross-sectional area along their longitudinal axis of the cross-slots in the respective variable stiffness longitudinal keels 102 is the same as the tendency of the cross-sectional area of the normal unequal stiffness bars 105 contained therein.
The webbed foot band 104 is used for fastening the webbed foot body 1 to the heel, and is also called a frog lace, a heel band and an annular bandage.
The cross-sectional specific shape of the normal unequal stiffness rods 105 in the vertical direction of the longitudinal axis in fig. 2 is a cross; the normal unequal rigidity rods 105 are arranged in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal rigidity rods 105, and the longitudinal bending rigidity of the normal unequal rigidity rods 105 is different; accordingly, the specific shape of the cross section of the cross-shaped groove for accommodating the normal unequal rigidity rods 105 is compatible with the cross-shaped cross section of the normal unequal rigidity rods 105, and the normal unequal rigidity rods 105 can be inserted into the cross-shaped groove in two insertion directions, namely a large longitudinal bending rigidity insertion direction and a small longitudinal bending rigidity insertion direction, so that the function of different longitudinal bending rigidities in different insertion directions can be realized.
The cross-section of the normal unequal stiffness rods 105 in the cross shape in fig. 2 is formed by bonding or physically combining more than 2 normal unequal stiffness rods with rectangular cross-section and different materials or different longitudinal bending stiffnesses in the direction that the longitudinal axes are parallel to each other, wherein the cross-section of the normal unequal stiffness rods 105 in the cross shape has two insertion directions, namely a large longitudinal bending stiffness insertion direction and a small longitudinal bending stiffness insertion direction, and the physical combination mode includes but is not limited to pressing under a temperature rise condition and step casting of two materials.
For the normal unequal stiffness rods 105 with cross-shaped specific cross-section, there are three states of insertion into the cross-shaped grooves in the variable stiffness longitudinal keels 102: the insertion direction of large longitudinal bending rigidity, the insertion direction of small longitudinal bending rigidity and no insertion; the influence of the state of the normal unequal stiffness rod 105 inserted into the variable stiffness longitudinal keel 102 on the longitudinal bending stiffness and propulsion power of the manually adjusted propulsion power variable stiffness flipper is as follows: the longitudinal bending rigidity and the propelling power in the inserting direction of the large longitudinal bending rigidity are highest, the longitudinal bending rigidity and the propelling power in the inserting direction of the small longitudinal bending rigidity are second, and the longitudinal bending rigidity and the propelling power which are not inserted are lowest.
For the cross slot containing the normal unequal stiffness rod 105, a swimmer can change the state of inserting the normal unequal stiffness rod 105 with the cross-shaped cross section into the variable stiffness longitudinal keel 102 from the small longitudinal bending stiffness inserting direction to the large longitudinal bending stiffness inserting direction before high-frequency water-fetching high-speed fast swimming, increase the longitudinal bending stiffness of the variable stiffness flipper for manually adjusting the propelling power, and also can change the state of inserting the normal unequal stiffness rod 105 with the cross-shaped cross section into the variable stiffness longitudinal keel 102 from the large longitudinal bending stiffness inserting direction to the small longitudinal bending stiffness inserting direction before low-frequency water-fetching low-speed slow swimming, decrease the longitudinal bending stiffness of the variable stiffness flipper for manually adjusting the propelling power, thereby adjusting the propelling power of the swimmer according to requirements.
The swimmer can not only make a high-frequency trip at a high speed, but also make a low-frequency trip at a low speed, no matter what frequency the swimmer takes water, the variable stiffness flippers for manually adjusting the propulsion power can be adjusted to the proper longitudinal bending stiffness in advance, thereby effectively improving the proportion of useful work, furthest improving the advancing efficiency and the swimming speed of swimming and diving, saving physical strength, fully giving play to the advancing potential of the swimmer in water, and finally achieving the purpose of long-time, long-distance and continuous high-speed tour. In addition, the swimmer can effectively reduce the fatigue feeling generated when continuously patrolling for a long distance and a long time through variable-speed tour.
The above-mentioned embodiments are only for convenience of illustration and are not intended to limit the invention in any way, and those skilled in the art will be able to make modifications and equivalents of the disclosed embodiments without departing from the technical scope of the invention.
Claims (6)
1. A variable stiffness fin for manually adjusting propulsive power, comprising a fin body (1), said fin body (1) comprising a fin panel (101), at least one longitudinal keel and at least one shoe-shaped compartment (103) for accommodating the swimmer's foot, characterized in that: the fin board (101) and the shoe-shaped cabin (103) are butted into a whole front and back, at least one of the longitudinal keels is the longitudinal keel (102) with variable rigidity, the specific types of the flippers comprise a double-foot single fin with two feet penetrating one, double-foot double fins with two feet penetrating one respectively, a bionic tail fin with two feet penetrating one together, a variable tail fin and a dolphin with single foot.
2. A variable stiffness flipper for manual adjustment of propulsion power according to claim 1 wherein: the variable-rigidity longitudinal keel (102) is internally provided with a cross groove, an X-shaped groove, a Y-shaped groove or a Chinese character mi-shaped groove for accommodating the normal unequal-rigidity rod (105) along the longitudinal axis direction of the longitudinal keel.
3. A variable stiffness flipper for manual adjustment of propulsion power according to claim 2 wherein: the longitudinal bending stiffness of the normal unequal stiffness rods (105) is different in two mutually perpendicular normal directions in a normal plane perpendicular to the longitudinal axis of the normal unequal stiffness rods (105), and the longitudinal axis of the normal unequal stiffness rods (105) is a curve or a straight line.
4. A variable stiffness flipper for manual adjustment of propulsion power according to claim 3 wherein: the specific shape of the cross section of the longitudinal axis vertical direction of the normal unequal rigidity rod (105) comprises a rectangle, an ellipse, an olive shape, a diamond shape, a parallelogram, a waist drum shape, a cross shape, an X shape, a Y shape and a Chinese character 'mi', and correspondingly, the specific shape of the cross section of the cross groove, the X-shaped groove, the Y-shaped groove or the Chinese character 'mi' shaped groove for accommodating the normal unequal rigidity rod (105) is compatible with the specific shape of the cross section of the normal unequal rigidity rod (105) and can insert the normal unequal rigidity rod (105) into the rod in more than two insertion directions.
5. A variable stiffness flipper for manual adjustment of propulsion power according to claim 4 wherein: the variable-rigidity longitudinal keel (102) is provided with a blocking cover (106) for blocking the normal unequal-rigidity rods (105) at the end of a cross groove, an X-shaped groove, a Y-shaped groove or a cross groove for accommodating the normal unequal-rigidity rods (105).
6. A variable stiffness flipper for manual adjustment of propulsion power according to claim 1 wherein: the variable-rigidity longitudinal keel (102) is internally replaced by a hollow tube, a replaceable variable-rigidity rod is accommodated in the hollow tube, and a blocking cover (106) for blocking the variable-rigidity rod is arranged at the end of the variable-rigidity longitudinal keel (102) for accommodating the variable-rigidity rod.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810976063.9A CN110856765A (en) | 2018-08-24 | 2018-08-24 | Rigidity-variable flipper capable of manually adjusting propelling power |
| PCT/CN2019/091442 WO2019242573A1 (en) | 2018-06-20 | 2019-06-16 | Foot fin having variable stiffness and adjustable propulsion power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810976063.9A CN110856765A (en) | 2018-08-24 | 2018-08-24 | Rigidity-variable flipper capable of manually adjusting propelling power |
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| Publication Number | Publication Date |
|---|---|
| CN110856765A true CN110856765A (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810976063.9A Pending CN110856765A (en) | 2018-06-20 | 2018-08-24 | Rigidity-variable flipper capable of manually adjusting propelling power |
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| CN (1) | CN110856765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112026461A (en) * | 2020-08-31 | 2020-12-04 | 哈尔滨工业大学 | Paddle-leg type deformable amphibious six-legged robot |
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| IT8412507A0 (en) * | 1984-05-03 | 1984-05-03 | Amf Mares Spa | SWIMMING FIN WITH AUTODE FORMABLE CHANNEL FOR CONVEYING AND CONTAINING THE FLUID THREAD |
| CN1502383A (en) * | 2002-08-06 | 2004-06-09 | ���������֡��ض� | Improved swim training fin |
| US20060025027A1 (en) * | 2004-07-30 | 2006-02-02 | Chien-Kuan Chen | Swim fin |
| CN203577259U (en) * | 2013-11-11 | 2014-05-07 | 谢新曦 | Swimming training tool |
| CN208641676U (en) * | 2018-08-24 | 2019-03-26 | 朱光 | A kind of stiffness variable flippers manually adjusting propeller power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT8412507A0 (en) * | 1984-05-03 | 1984-05-03 | Amf Mares Spa | SWIMMING FIN WITH AUTODE FORMABLE CHANNEL FOR CONVEYING AND CONTAINING THE FLUID THREAD |
| CN1502383A (en) * | 2002-08-06 | 2004-06-09 | ���������֡��ض� | Improved swim training fin |
| US20060025027A1 (en) * | 2004-07-30 | 2006-02-02 | Chien-Kuan Chen | Swim fin |
| CN203577259U (en) * | 2013-11-11 | 2014-05-07 | 谢新曦 | Swimming training tool |
| CN208641676U (en) * | 2018-08-24 | 2019-03-26 | 朱光 | A kind of stiffness variable flippers manually adjusting propeller power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112026461A (en) * | 2020-08-31 | 2020-12-04 | 哈尔滨工业大学 | Paddle-leg type deformable amphibious six-legged robot |
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