Artificial feather with adjacent feather sheet conjugate overlapping structure for badminton

Abstract

The invention relates to the technical field of sports equipment, in particular to a shuttlecock artificial feather with an adjacent feather sheet conjugate overlapping structure, which comprises a feather stem and feather leaves, the upper section of the feather stem is a feather branch part, the lower section of the feather stem is a feather stem part, the lower section of the feather stem part is fixed on a shuttlecock head, and the feather stem part is fixed on the shuttlecock head. And the feather branch part divides the feather into a feather part 1 and a feather part 2. According to the invention, overlapping and resetting are balanced through a conjugate structure, so that the fluff count is reduced; the air flow is stabilized through contour optimization, so that the flight path deviation is reduced; the appearance similarity is improved through beak-shaped compensation, the flying stability of the shuttlecock is remarkably improved, airflow turbulence is reduced, fuzz is avoided, the appearance is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sports equipment, in particular to an artificial feather for badminton with a conjugate overlapping structure of adjacent feather pieces. BACKGROUND

[0002] The flight stability and durability of modern badminton are closely related to the overlapping relationship between feather pieces. In natural badminton, full-circle feather badminton has excellent flight performance due to the reasonable overlapping of adjacent feather pieces. However, there are obvious defects when simulating this structure with artificial feathers: if the overlap is too much, the feather pieces are prone to deformation and cannot reset after a powerful hit (i.e., "reverse hair"); if the overlap is too little or there is a large gap, it will reduce the wind resistance during high-speed flight, resulting in a decline in flight performance and a rough appearance.

[0003] In the prior art, some artificial feathers avoid "reverse hair" by simply reducing the overlap or setting a gap, but at the expense of flight stability; another part excessively pursues the degree of overlap, leading to frequent "reverse hair". For example, patent CN109876543A discloses an artificial feather piece overlap design that only optimizes flight performance by fixing the overlap width (3-5mm), without using conjugate relationships, which is prone to "reverse hair". In addition, unreasonable design of the contour of adjacent feather pieces also exacerbates airflow turbulence, affecting the flight trajectory, such as the strong convex arc line of the feather blade contour in US20200129876A1, which does not limit a specific interval (5-30mm), resulting in poor airflow stability. At the same time, the existing technology uses a flat shielding piece to compensate for the gap, such as JP2018126345A, resulting in a large difference in appearance from natural feathers. Therefore, there is an urgent need for an artificial feather for badminton with a conjugate overlapping structure of adjacent feather pieces. SUMMARY

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the technical problem to be solved is to provide an artificial feather for badminton with a conjugate overlapping structure of adjacent feather pieces.

[0005] The technical solution of the present application is: an artificial feather for badminton with a conjugate overlapping structure of adjacent feather pieces, including a feather shaft and a feather blade, the upper segment of the feather shaft is a feather branch, the lower segment of the feather shaft is a feather stem, the lower segment of the feather stem is fixed to a ball head, the feather branch divides the feather blade into feather blade 1 and feather blade 2, the outer contour lines of the feather blade 1 and the feather blade 2 of adjacent feather pieces have a conjugate relationship within an interval of 5-30mm from the top end, and when multiple artificial feathers form a ball skirt, the average width of the overlapping area between the feather pieces of adjacent two feathers is -1.0 to +2.0mm.

[0006] As a preferred technical solution of the present application, the outer contour lines of the feather blade 1 and the feather blade 2 are straight lines or slightly convex arc lines within an interval of 5-30mm from the top end.

[0007] As a preferred technical scheme of the present application, the average width of the overlapping area between the vane 1 part and the vane 2 part of the adjacent vane is 1.2 mm.

[0008] As a preferred technical scheme of the present application, the length of the beak-shaped protrusion at the upper end of the vane 1 part is 2.5 mm.

[0009] As a preferred technical scheme of the present application, the beak-shaped protrusion is used to cover the gap between the vane 1 part and the vane 2 part of the adjacent vane, and the beak-shaped protrusion can cover a gap of 1.0 mm or less.

[0010] The beneficial effects are: the present application reduces the reverse hair rate by 82% through the conjugate structure balance of overlapping and resetting; the flight trajectory deviation is reduced by 60% through the contour optimization to stabilize the airflow; the appearance similarity is improved by 41% through the beak-shaped compensation, the present application significantly improves the flight stability of the shuttlecock, reduces airflow turbulence, avoids "reverse hair", improves the appearance, prolongs the service life, and the appearance is close to the natural full-round feather shuttlecock, meets the user's demand for "high-end feeling", and has strong practical value. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic diagram of the conjugate overlapping relationship structure between adjacent vane parts of the present application.

[0012] Figure 2 It is a schematic diagram of the front shape of the present application.

[0013] Figure 3 It is a schematic diagram of the three-dimensional structure of the artificial shuttlecock.

[0014] Among them: 1-ball head, 2-ball skirt, 3-artificial feather, 31-feather stem, 32-feather leaf, 33-vane 1 part, 34-vane 2 part, 35-beak-shaped protrusion, 36-feather branch part, 37-feather stem part, 4-support ring, A-the average width of the overlapping area between the adjacent two vane parts of the shuttlecock. DETAILED DESCRIPTION

[0015] The technical scheme of the present application will be further described below in combination with the drawings.

[0016] Example 1

[0017] As Figure 1 , Figure 2 and Figure 3As shown, a kind of artificial feather for badminton with adjacent feather piece conjugate overlap structure, including feather stem 31 and feather leaf 32, the upper section of feather stem 31 is feather branch 36, the lower section of feather stem 31 is feather stem part 37, the lower section of feather stem part 37 is fixed to ball head 1, feather branch 36 divides feather leaf 32 into feather leaf 1 part 33 and feather leaf 2 part 34, the outer contour line of adjacent feather piece feather leaf 1 part 33 and feather leaf 2 part 34 exists conjugate relationship in the interval of 5-30mm from top end 5, ball skirt 2 is by the annular arrangement of the horn shape of upper big lower small of multiple artificial feathers according to specific deflection angle by at least one support ring 4, the back of ball head 1 is provided with the inclined hole of the number of artificial feather on ball skirt 2 equal along the circumferential direction, glue is injected in the inclined hole, or, after the glue is applied to the feather part of artificial feather, it is inserted into the inclined hole and is fixed, then again glue is applied to the intersection of feather part and the back plane of ball head, when multiple artificial feathers 3 form ball skirt 2, the average width of overlapping area between the feather pieces of adjacent two feathers is-1.0 to +2.0mm.

[0018] In some embodiments, the outer contour line of feather leaf 1 part 33 and feather leaf 2 part 34 is a straight line or a slightly convex arc line in the interval of 5-30mm from top end.

[0019] In some embodiments, the average width of overlapping area between feather leaf 1 part 33 and feather leaf 2 part 34 of adjacent feather pieces is 1.2mm.

[0020] In some embodiments, the outer contour line of feather leaf 1 part 33 and feather leaf 2 part 34 is a straight line in the interval of 10-25mm from top end.

[0021] In some embodiments, the length of beak-shaped protrusion 35 on the upper end of feather leaf 1 part 33 is 2.5mm.

[0022] In some embodiments, beak-shaped protrusion 35 is used to cover the gap between feather leaf 1 part 33 and feather leaf 2 part 34 of adjacent feather pieces, and beak-shaped protrusion 35 can cover a gap of 1.0mm or less.

[0023] In some embodiments, the radius of curvature of the slightly convex arc line is such that the airflow separation point is delayed by 0.3 seconds.

[0024] The outer contour line of feather leaf 1 part 33 and feather leaf 2 part 34 exists conjugate relationship in the interval of 5-30mm from top end, that is, when multiple artificial feathers 3 form ball skirt 2, the average width of overlapping area between the feather pieces of adjacent two feathers is-1.0 to +2.0mm (negative value represents that there is a gap), such as Figure 1The middle A represents the average width of the overlapping area between two adjacent vane pieces of the shuttlecock. This dynamic overlapping area can balance the wind resistance and the reset performance, and solve the contradiction between the existing technology of "overlapping must be reversed" and "no overlapping loses performance". According to actual measurement, under the average value of 1.2 mm, the shuttlecock can be reset within 1 second after hitting and the high-speed wind resistance is stable. The overlapping area of the vane pieces can cover 90% of the airflow demand under the hitting scene, the reverse feather rate is reduced by 82% compared with the traditional fixed overlapping (3-5 mm), the outer contour lines of the vane piece 1 part 33 and the vane piece 2 part 34 are straight lines or slightly convex arcs within the interval of 5-30 mm away from the top end, which ensures the stability of the airflow. Compared with the existing strong convex arc design, the straight line / slightly convex structure reduces the flight trajectory deviation to ±2 mm (the traditional scheme is ±5 mm), and the processing difficulty is reduced by 30%. The wind tunnel test shows that the contour can delay the airflow separation point by 0.3 seconds, improving the stability of high-speed flight.

[0025] The outer contour of the upper end of the vane piece 1 part 33 is a protruding beak-shaped protrusion 35, which can cover the possible gap between adjacent vane pieces and improve the coordination of the overall appearance of the shuttlecock. Compared with the traditional planar shielding piece, the protrusion structure reduces the weight by 15% and increases the compensation area by 40%, solving the problem of "gap affecting appearance". User blind test shows that the structure has a similarity of 92% with the appearance of natural feathers, which is significantly higher than that of traditional artificial feathers 3 (65%).

[0026] In example 2, the outer contour of the vane piece 1 part 33 and the vane piece 2 part 34 is a straight line within the interval of 10-25 mm away from the top end, which ensures easy processing and stable airflow guidance. The average width of the overlapping area of adjacent vane pieces is controlled to be 1.2 mm, which is verified by actual measurement: under this value, the vane pieces can not only maintain the wind resistance required for high-speed flight, but also reset within 1 second after hitting, without "reverse feather" phenomenon. The length of the beak-shaped protrusion 35 at the upper end of the vane piece 1 part 33 is 2.5 mm, which covers the gap of 1.0 mm or less between adjacent vane pieces, and there is no significant difference in appearance from natural full-circle feather shuttlecock.

[0027] Example 3

[0028] The outer contour of the vane piece 1 part 33 and the vane piece 2 part 34 is a slightly convex arc within the interval of 5-30 mm away from the top end, and the radius of curvature delays the airflow separation point by 0.3 seconds. The average width of the overlapping area of adjacent vane pieces is -1.0 mm (there is a gap of 1.0 mm), which is covered by the beak-shaped protrusion 35 at the upper end of the vane piece 1 part 33, and the appearance is coordinated. According to the test, the flight trajectory deviation of the shuttlecock in this example is ±1.8 mm, and the reverse feather rate is reduced by 80% compared with the traditional scheme.

[0029] Example 4

[0030] The outer contour of the feather leaf 1 part 33 and the feather leaf 2 part 34 is a slightly convex arc line in the interval of 5-10 mm from the top end 5, and is a straight line in the interval of 10-30 mm. The average width of the overlapping area of adjacent vane is +2.0 mm, and the reset is rapid after hitting, and the wind resistance is stable. The beak-shaped protrusion 35 at the upper end of the feather leaf 1 part 33 has a length of 2.5 mm, which further improves the appearance similarity, and the user blind test similarity reaches 93%.

[0031] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having the benefit of this disclosure will appreciate that many other embodiments can be devised without departing from the scope of the invention.

Claims

1. An artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes, characterized in that it comprises: There are quills (31) and leaflets (32). The upper part of the quill (31) is the barb (36), and the lower part of the quill (31) is the shaft (37). The lower part of the shaft (37) is fixed to the head (1). The barb (36) divides the leaflet (32) into leaflet 1 (33) and leaflet 2 (34). The outer contours of the leaflet 1 (33) and leaflet 2 (34) of adjacent leaflets have a conjugate relationship in the range of 5-30mm from the top. When multiple artificial feathers (3) form a skirt (2), the average width of the overlap area between the leaflets of two adjacent feathers is -1.0 to +2.0mm.

2. The artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes as described in claim 1, characterized in that, The outer contours of the first part (33) and the second part (34) of the feather are straight or slightly convex arcs within a range of 5-30 mm from the top.

3. The artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes as described in claim 1, characterized in that, The average width of the overlap area between the first part (33) and the second part (34) of adjacent pinnae is 1.2 mm.

4. The artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes as described in claim 1, characterized in that, The beak-shaped protrusion (35) at the upper end of the feather 1 (33) is 2.5 mm long.

5. The artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes as described in claim 4, characterized in that, The beak-shaped protrusion (35) is used to cover the gap between the feather blade 1 (33) and the feather blade 2 (34) of the adjacent feather.

6. The artificial feather for a badminton shuttlecock with a conjugate overlapping structure of adjacent vanes as described in claim 5, characterized in that, The beak-shaped protrusion (35) can cover gaps of up to 1.0 mm.

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