CN110548263A - Flippers with secondary blade set - Google Patents
Flippers with secondary blade set Download PDFInfo
- Publication number
- CN110548263A CN110548263A CN201910151271.XA CN201910151271A CN110548263A CN 110548263 A CN110548263 A CN 110548263A CN 201910151271 A CN201910151271 A CN 201910151271A CN 110548263 A CN110548263 A CN 110548263A
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- CN
- China
- Prior art keywords
- blade
- flipper
- blades
- primary
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention relates to a flipper with a secondary blade group, which comprises a foot bag part, a main blade and the secondary blade group. The foot bag portion is used for the foot of a user to be sleeved in. The main blade is provided with a first end and a second end, the first end is fixed with the foot bag part, and the second end extends towards a first direction far away from the foot bag part. The secondary blade group is provided with at least one secondary blade, and the at least one secondary blade is arranged on the main blade by a fixing part.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a flipper, in particular to a flipper which is used for floating or diving sports and is provided with a secondary blade group.
[ background of the invention ]
When people do underwater sports such as floating, diving and the like, the flippers are worn to increase the water kicking area in order to generate enough propelling power. As shown in fig. 1, when a user wears a conventional flipper 40 (also called paddle flipper) in the market and swings his/her foot up/down to kick water (when the user faces to the bottom of the water, the user faces to the water surface/bottom of the water), the water will generate a resistance to the web of the flipper to bend the web, and then the web will exert a force on the water to make the user advance in the water by the resilience of the material and structure of the web.
However, no matter how skillful the user kicks water, how much the user kicks water, or how much the user uses the flippers with different ribs, cavities, etc., as long as the flippers are flat type flippers, the fin surface of the fin portion will be disturbed by water resistance in different directions and different magnitudes when the user kicks water, and then the phenomena of shaking, tilting, swaying, etc. will occur to affect the propulsion efficiency (as shown in fig. 1), so that the user will consume much physical strength and leg strength when wearing the flippers, and the oxygen consumption of the body will be increased.
although manufacturers have designed flippers or split flippers (or branched flippers) with soft web material to solve the above-mentioned disadvantages and thereby obtain the effects of reducing the burden of legs and reducing the oxygen consumption of the body when kicking water, such flippers have a significantly insufficient propulsive force when encountering a flowing area in the sea, and are difficult to rapidly assist users in dissociating a specific sea area, thereby creating a safety concern.
Therefore, it is an object of the present invention to avoid the phenomena of shaking, tilting and swaying of the flipper surface during water kicking, and to maintain or increase the propulsive force during water kicking.
[ summary of the invention ]
An object of the present invention is to provide a flipper having a sub-blade set, which can provide sufficient or more enhanced propulsive force while reducing the burden on the legs of the user during underwater activities.
To achieve the above object, the flipper of the present invention comprises a foot bag, a main blade and a secondary blade set. The foot bag part is used for the foot of a user to be sleeved in; the main blade is provided with a first end and a second end, the first end is fixed with the foot bag part, and the second end extends towards a first direction far away from the foot bag part; the secondary blade group is provided with at least one secondary blade, and the at least one secondary blade is arranged on the main blade by a fixing part.
to achieve the above object, the flippers of the present invention have a secondary blade group integrally formed with a primary blade.
In order to achieve the above object, the flippers of the present invention have at least one secondary blade and a main blade, wherein the angle is between 0 degree and 90 degrees.
To achieve the above object, the flippers of the present invention have a main blade having an upper surface facing a user and a lower surface opposite to the upper surface, and when at least one of the sub-blades is a plurality of sub-blades, the sub-blades are respectively disposed on the upper surface and the lower surface in a corresponding or staggered manner.
To achieve the above object, the flippers of the present invention further include at least one fixing hole, wherein the at least one fixing hole is used for the fixing portion of the at least one blade to pass through, so that the at least one secondary blade is disposed on the main blade.
To achieve the above object, the flippers of the present invention have a main blade having an upper surface facing the user and a lower surface opposite to the upper surface, and the fixing portion is disposed on at least one of the upper surface and the lower surface in a locking, buckling or bonding manner.
To achieve the above object, the flipper of the present invention has a main blade extending along a first direction with a first length that is not equal to a second length of at least one secondary blade extending along the first direction.
To achieve the above object, the flippers of the present invention have the secondary blade set disposed at 1/4-3/4 of the primary blade with the fixing portion.
To achieve the above object, the flippers of the present invention have a secondary blade set with a height perpendicular to the primary blade, and the height is at least 40 mm.
To achieve the above object, the flippers of the present invention have a minor blade set having a blade thickness, wherein the blade thickness is thinner at one end away from the foot pocket portion than at the other end near the foot pocket portion.
To achieve the above object, the flippers of the present invention have a secondary set of blades with a blade thickness of between 3 mm and 15 mm.
In order to achieve the above object, the flippers of the present invention have a sub-blade group made of metal.
To achieve the above object, the flippers of the present invention have secondary blade sets extending along a second direction, wherein an angle is formed between the second direction and the first direction, and the angle is between 0 degree and 45 degrees.
To achieve the above object, the flippers of the present invention have a secondary blade set having an outer contour or a cross-sectional shape, and the outer contour or cross-sectional shape is a fin-like shape, a triangular shape, a trapezoidal shape, a rectangular shape, an L shape or an S shape.
In order to make the aforementioned objects, features and advantages more comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
FIG. 1 is a perspective view showing a water flow state of a conventional flipper;
FIG. 2 is a perspective view of the flipper of the present invention;
FIGS. 3A and 3B are perspective views showing the foot pocket type of a conventional flipper;
FIG. 4 is a perspective view of the flipper of the present invention having a plurality of ribs;
FIGS. 5A-5G are schematic perspective views of a flipper of the present invention having different secondary blade configurations;
FIGS. 6A and 6B are schematic perspective views of a flipper of the present invention having sub-blades of different lengths;
FIGS. 7A-7C are perspective views of the flippers of the present invention with different sets of secondary blades;
FIG. 8 is a schematic top view of the flipper of the present invention;
FIGS. 9A-9C are schematic cross-sectional views of the flipper of FIG. 8 taken along line A-A;
FIG. 10A is a schematic top view of the minor blades of the fin of the present invention having different thicknesses;
FIGS. 10B and 10C are schematic cross-sectional views taken along line B-B of the flipper of FIG. 10A with minor blades of different thicknesses;
FIGS. 11A and 11B are schematic cross-sectional views taken along line B-B of the flippers of the present invention with secondary blades having different angles of inclination;
FIGS. 12A and 12B are schematic top views of the secondary blade set of the flippers of the present invention with different extending directions;
FIG. 13 is a schematic perspective view of the secondary blade of the flipper of the present invention swinging during use; and
Fig. 14 is a perspective view showing the water flow state of the flippers of the present invention during use.
[ notation ] to show
10 frog shoes
100 feet bag
200 main blade
206 fixed hole
210 first end
220 second end
300 times blade group
310 times blade
312 fixed part
40 flat type frog shoes
Angle A
angle a2
Line segment A-A
Line segment B-B
d1 first direction
d2 second direction
Height H
l1 first length
l2 second length
[ detailed description ] embodiments
Fig. 2 is a perspective view of the flipper 10 according to a preferred embodiment of the present invention. The flipper 10 has a foot bag portion 100, a main blade 200 and a primary blade set 300, and the technical contents of each element are described in order as follows.
The foot bag 100 can be used for a user to insert the foot when the user performs diving or floating underwater activities, and the foot bag 100 can be selected to be a covered foot bag (as shown in fig. 3A) or an open foot bag (as shown in fig. 3B) according to the habit of the user. The primary blade 200 has a first end 210 and a second end 220, the first end 210 is fixed to the foot pocket 100, and the second end 220 extends in a first direction D1 away from the foot pocket 100. The secondary blade set 300 has at least one secondary blade 310 and is disposed on the primary blade 200 by a fixing portion 312.
as shown in FIG. 4, the primary blade 200 has an upper surface 202 and a lower surface 204 opposite the upper surface 202 (corresponding to the instep and sole of the user's foot, respectively), and the upper surface 202 and the lower surface 204 may have a plurality of ribs and grooves to assist in flow guiding. The secondary blade set 300 may be disposed on both the upper surface 202 and the lower surface 204 of the primary blade 200, or on one of the upper surface 202 or the lower surface 204 of the primary blade 200, and the secondary blade set 300 may have a similar rib and groove structure (not shown) as the primary blade 200.
in detail, the secondary blade set 300 may be provided in various ways according to the needs of users for different activities in water. As shown in fig. 5A-5G, the secondary blade set 300 may have at least one secondary blade 310 in the form of a single secondary blade 310 or two secondary blades 310, both mounted on the upper surface 202 (as shown in fig. 5A and 5B); the at least one secondary blade 310 may also be in the form of two or more secondary blades 310, and are disposed on the upper surface 202 and the lower surface 204 respectively, opposite to each other (as shown in fig. 5C to 5E); alternatively, the at least one secondary blade 310 may also be more than two secondary blades 310 respectively disposed on the upper surface 202 and the lower surface 204 in a staggered manner (as shown in fig. 5F); more alternatively, the number of the at least one secondary blade 310 is two or more, and the smaller secondary blades 310 'are aligned on the upper surface 202 (e.g., three aligned secondary blades 310' as shown in fig. 5G). Thus, by varying the number and arrangement of the secondary blades 310, the flipper 10 can provide different levels of flow guidance, reduce or eliminate the disturbance of water resistance, and maintain or improve the propulsion efficiency of the user in water compared to the prior art.
In addition, in the present invention, a first length L1 of the primary blade 200 extending along the first direction D1 may not be equal to a second length L2 of each secondary blade 310 of the secondary blade set 300 extending along the first direction D1. That is, according to the region or purpose of the user to perform the water activity, the second length L2 of the secondary blade 310 may be substantially equal to the main blade 200 as shown in fig. 2, or longer than the main blade 200 as shown in fig. 6A, so as to increase the contact area and increase the propelling efficiency when kicking water. In addition, as shown in fig. 6B, in order to enhance the stability of the main blade 200 during water kicking, the second length L2 of the sub-blade 310 may be shorter than the first length L1 of the main blade 200, so as to avoid the shaking, inclination, and sloshing phenomena generated during water kicking of the main blade 200, thereby reducing the resistance to water kicking and the fatigue of the legs.
The main blade 200 and the sub-blade set 300 can be manufactured as shown in fig. 2 in an integrally formed form (for example, a single material is integrally formed or two or more materials are integrally formed by injection molding), or can be manufactured as separately formed and then assembled with each other.
when the primary blade 200 and the secondary blade set 300 are assembled, the primary blade 200 may further include at least one fixing hole 206, so that the fixing portion 312 of the at least one secondary blade 310 may pass through the at least one fixing hole 206 for the at least one secondary blade 310 to be disposed on the primary blade 200. Stated differently, as shown in fig. 7A, the sub-blade 310 may be made of a flexible material, so that the fixing portion 312 may be clamped in the fixing hole 206 by passing through the fixing hole 206. Alternatively, as shown in fig. 7B, the fixing portions 312 of the corresponding secondary blades 310 may be connected and fastened to each other, and thus may pass through the fixing holes 206 to be fastened to the primary blade 200, respectively. As shown in fig. 7C, the main blade 200 may be provided with a locking hole, a groove or a tenon, so that the fixing portion 312 of the at least one secondary blade 310 can be fixed on at least one of the upper surface 202 or the lower surface 204 in a locking, buckling or bonding manner, so that a user can assemble different secondary blades 310 on the main blade 200 as desired.
With continued reference to fig. 8, in a preferred embodiment, the fixing portion 312 of the secondary blade 310 is disposed at 1/4 to 3/4 of a first length L1 of the primary blade 200 to have a preferred water-cutting position.
In addition, as shown in fig. 9A to 9C, the at least one secondary blade 310 has a height H perpendicular to the main blade 200 (the height H extends upward from the upper surface 202 or downward from the lower surface 204), and the height is at least 40 mm to have a sufficient water cutting effect, so that water can smoothly pass through the main blade 200, and the shaking of the main blade 200 caused by water resistance when a user kicks water is reduced. As shown in fig. 9A to 9C, the secondary blade 310 may further have an outer contour or a cross-sectional shape, and the shape is a fin-like shape, a triangle shape, a trapezoid shape, a rectangle shape, an L shape or an S shape, so as to achieve different water-cutting and swinging effects.
Referring to fig. 10A, the secondary blade set 300 may have a blade thickness between 3 mm and 15 mm, and the blade thickness is thinner in the horizontal direction at one end far from the foot bag portion 100 than at the other end near the foot bag portion 100; or as shown in fig. 10B, in the vertical direction, one end away from the main blade 200 is thinner than the other end closer to the main blade 200; or, by using materials with different hardness, the end far from the foot bag portion 100 or far from the main blade 200 is softer, so that the end, like a fin, can swing flexibly along with the water flow, the water flow can flow through the main blade 200 more smoothly, and the inclination or shaking caused by the water resistance when the main blade 200 swings is reduced. The material of the secondary blade set 300 may further include metal, for example, a metal sheet with a thickness less than 1 mm may be used to achieve this effect (as shown in fig. 10C).
Referring to fig. 11A and 11B, from a rear view, in addition to the installation manner of the at least one secondary blade 310 being perpendicular to the main blade 200, the at least one secondary blade 310 may also form an angle a with the main blade 200, and the angle a is between 0 degree and 90 degrees.
On the other hand, from a top view, as shown in fig. 12A, the at least one secondary blade 310 may extend along a second direction D2, and an angle a2 is sandwiched between the second direction D2 and the first direction D1, and the angle a2 is between 0 degree and 45 degrees, or forms a curved arc toward the second direction D2 (as shown in fig. 12B).
Referring to fig. 13 and 9A, in addition to the fixing portion 312 and the main blade 200 being connected to each other, the at least one secondary blade 310 except the fixing portion 312 may be not limited to the swing direction (usually, up-and-down swing) of the main blade 200, and may swing freely according to the direction of the water flow (usually, left-and-right swing), and the swing angle may be greater than 90 degrees.
Thus, by the arrangement of the sub-blade set 300, the user can surely cut water when wearing the flipper 10 to do underwater activities, so that the water flow is divided by the sub-blades 310 to smoothly pass through the web surfaces of the main blade 200, and the disturbance resistance caused by mutual squeezing on the web surfaces is avoided, thereby reducing the inclination and shaking conditions of the main blade generated during water kicking in the prior art and providing a stable propelling force for the user (as shown in fig. 14). Meanwhile, the secondary blade assembly 300 may be optionally swung and twisted in a direction different from the swinging direction of the primary blade 200, thereby increasing the contact area with water and enhancing the propulsive force during swinging.
in addition, the flipper 10 with the secondary blade set 300 of the present invention can generate a propelling force even if swinging in a non-up-down water kicking manner (e.g., flipper type water kicking), so that the user can easily adjust the amount and speed of the required propelling force in a small scale, and the user can observe aquatic organisms more conveniently.
in other words, the flipper 10 equipped with the secondary blade set 300 of the present invention has the following advantages: under the condition that the hardness of the main blade 200 is not changed to maintain the original propelling force, when a user moves in diving or floating water, the user can feel sufficient water feeling, feel easier and smoother, and reduce the operation difficulty (for example, the user can easily move in the water in a posture with higher difficulty without being limited by the swimming skills of the user), thereby reducing the consumption of the strength and the oxygen intake of the user and improving the propelling efficiency.
The above-mentioned embodiments are only used to illustrate the implementation of the present invention and to explain the technical features of the present invention, and are not used to limit the protection scope of the present invention. Any modifications or equivalent arrangements which may occur to those skilled in the art and which fall within the spirit and scope of the appended claims should be construed as limited only by the scope of the claims.
Claims (14)
1. A flipper having a set of secondary blades, comprising:
A foot bag portion for a user's foot to fit into;
A main blade having a first end and a second end, the first end being fixed to the foot pocket portion, and the second end extending in a first direction away from the foot pocket portion; and
The primary blade group is provided with at least one primary blade, and the at least one primary blade is arranged on the main blade by a fixing part.
2. The flipper of claim 1 having a secondary set of blades, wherein the secondary set of blades is integrally formed with the primary blade.
3. The flipper with set of secondary blades of claim 1, wherein an angle is formed between the at least one secondary blade and the primary blade, and the angle is between 0 degrees and 90 degrees.
4. The flipper of claim 1, wherein the primary blade has an upper surface facing the user and a lower surface opposite to the upper surface, and when the at least one secondary blade is a plurality of secondary blades, the plurality of secondary blades are disposed on the upper surface and the lower surface respectively in a corresponding or staggered manner.
5. The flipper of claim 1, wherein the primary blade further comprises at least one fastening hole, the at least one fastening hole is for the fastening portion of the at least one secondary blade to pass through, such that the at least one secondary blade is disposed on the primary blade.
6. The flipper of claim 1, wherein the primary blade has an upper surface facing the user and a lower surface opposite to the upper surface, and the fastening portion is disposed on at least one of the upper surface or the lower surface in a locking, snapping or bonding manner.
7. The flipper of claim 1, wherein a first length of the primary blade extending in the first direction is not equal to a second length of the at least one secondary blade extending in the first direction.
8. The flipper of claim 1, wherein the anchor portion of the secondary set of blades is disposed 1/4-3/4 of the primary blade having a first length.
9. The flipper of claim 1, wherein the secondary blade set has a height perpendicular to the primary blade, and wherein the height is at least 40 mm.
10. The flipper of claim 1, wherein the secondary blade set has a blade thickness, and wherein the blade thickness is thinner at one end distal from the foot pocket portion than at another end proximal to the foot pocket portion.
11. The flipper having a set of secondary blades of claim 10, wherein the blade has a thickness of between about 3 mm and about 15 mm.
12. The flipper having a secondary blade set of claim 1, wherein the secondary blade set comprises a metal.
13. The flipper of claim 1, wherein the secondary blade set extends in a second direction, the second direction being at an angle with respect to the first direction, the angle being between 0 degrees and 45 degrees.
14. The flipper of claim 1, wherein the secondary blade has an outer contour or a cross-sectional shape, and the outer contour or the cross-sectional shape is a fin-like shape, a triangular shape, a trapezoidal shape, a rectangular shape, an L shape, or an S shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862677684P | 2018-05-30 | 2018-05-30 | |
| US62/677,684 | 2018-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110548263A true CN110548263A (en) | 2019-12-10 |
Family
ID=68736314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910151271.XA Pending CN110548263A (en) | 2018-05-30 | 2019-02-28 | Flippers with secondary blade set |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110548263A (en) |
| TW (1) | TW202003074A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021167627A1 (en) * | 2020-02-17 | 2021-08-26 | Willem Van Straaten | Exercise device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417599A (en) * | 1994-02-25 | 1995-05-23 | Evans; Robert B. | Swim fin having multiple interchangeable components |
| WO2007000394A1 (en) * | 2005-06-27 | 2007-01-04 | Stig Kristensson | Swim fin |
| WO2009016422A1 (en) * | 2007-07-27 | 2009-02-05 | Miljenko Jelusic | Fins for swimming and diving with vertical wings - stabilizers |
| CN106110596A (en) * | 2016-08-19 | 2016-11-16 | 广州市宏来鞋业有限公司 | A kind of modified model frog footwear |
-
2019
- 2019-02-26 TW TW108106579A patent/TW202003074A/en unknown
- 2019-02-28 CN CN201910151271.XA patent/CN110548263A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417599A (en) * | 1994-02-25 | 1995-05-23 | Evans; Robert B. | Swim fin having multiple interchangeable components |
| WO2007000394A1 (en) * | 2005-06-27 | 2007-01-04 | Stig Kristensson | Swim fin |
| WO2009016422A1 (en) * | 2007-07-27 | 2009-02-05 | Miljenko Jelusic | Fins for swimming and diving with vertical wings - stabilizers |
| CN106110596A (en) * | 2016-08-19 | 2016-11-16 | 广州市宏来鞋业有限公司 | A kind of modified model frog footwear |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202003074A (en) | 2020-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191210 |
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| WD01 | Invention patent application deemed withdrawn after publication |