CN108525256B - Three-section badminton feather planting piece - Google Patents
Three-section badminton feather planting piece Download PDFInfo
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- CN108525256B CN108525256B CN201810232928.0A CN201810232928A CN108525256B CN 108525256 B CN108525256 B CN 108525256B CN 201810232928 A CN201810232928 A CN 201810232928A CN 108525256 B CN108525256 B CN 108525256B
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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
- A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
- A63B67/18—Badminton or similar games with feathered missiles
- A63B67/183—Feathered missiles
- A63B67/187—Shuttlecocks
Abstract
The utility model relates to a three-section badminton feather planting piece. The hand feeling of the shuttlecock manufactured by the existing product is different from that of the conventional two-section shuttlecock. The utility model relates to a formed hair planting piece which comprises a hair planting pipe, a hair planting rod, a bottom plate, connecting ribs and a mounting seat. The feather inserting holes are arranged in the feather planting tubes, the feather planting tubes are connected with the feather planting rods to form a feather piece, and the plurality of feather pieces are uniformly distributed along the edge of the bottom plate to form an inverted truncated cone-shaped plug piece combination. The section of the capillary tube is circular, quadrilateral or polygonal; the pinna jack is a hole with a square section. Through the optimal design, the consistency of the positions of the wings when the feathers are mechanically implanted is ensured, the implantation firmness of the feathers is improved, meanwhile, the insertion of the feathers is facilitated, the consumption habits of the shuttlecocks in different countries and regions can be met, and the batting feeling and the flight track of the shuttlecock are more similar to those of the traditional two-section shuttlecocks.
Description
Technical Field
The utility model belongs to the technical field of cultural and physical articles, and particularly relates to a badminton feather planting piece for connecting a pinna and a ball head of a three-section badminton.
Background
Badminton is more and more popular, and traditional two-stage shuttlecocks have a service life of only 20 minutes. In addition, the traditional two-section type badminton is formed by directly inserting 16 feather pieces with the length of 71-77mm onto a badminton head, adding glue for solidification, and fixing a feather rod and the badminton head only by means of glue at the intersection of the badminton head and the feather rod, so that the feather rod is implanted deeply, the glue on the surface is more, and the phenomenon that the feather rod and the badminton head loose to cause the shuttlecock to be scrapped is easy to occur after the badminton is hit repeatedly. The feather pieces with the length of 71-77mm are made of longer feathers, so that the available natural feather resources are relatively less, and the cost is increased. Winding two coils on a feather rod of the traditional two-section badminton, and adding glue for reinforcement; the two-way coil reinforced by the glue has good rigidity, and after the traditional two-way badminton is hit, the two-way rigid coil has small absorption effect on impact force, the impact force is directly transmitted to the feather rod, and the feather rod is sheared, so that the feather rod of the traditional two-way badminton is easy to fracture or crack. The added two coils are easy to loosen after repeated striking, so that the traditional two-section badminton is scrapped. The traditional two-section shuttlecock has the defects of more and complex working procedures, poor productivity and replication capability, low production efficiency and high production cost, and the use cost of the traditional two-section shuttlecock is higher.
In order to overcome various defects of the traditional two-section badminton, a three-section badminton is formed. The badminton consists of a ball head, a feather planting frame and a plurality of short feather pieces in sequence. The feather planting frame is integrally formed, a plurality of feather planting pipes and feather planting rods form a feather planting piece, the feather planting pipes are implanted with the feather planting rods of the short feather pieces, and the feather planting rods replace the functions of the feather rods of the traditional two-section badminton. Two connecting ribs are arranged between the hair-planting pieces of the integrally-formed hair-planting frame to replace two coils of the traditional two-section badminton. The three-section badminton is characterized in that a feather planting frame is added between a feather wing and a ball head, the badminton is inserted into a feather planting pipe on the feather planting frame and fixedly connected with the ball head, and then the feather planting frame is fixedly connected with the ball head, such as an utility model patent application with the application number of 201110426157.7, an utility model patent with the patent number of 201420091352.8, an utility model patent with the patent number of 201520844830.2, an utility model patent with the patent number of 200620039058.8, an utility model patent with the patent number of 201520844874.5 and the like. These three-section shuttlecocks are all divided into a feather planting pipe part for inserting feather and a solid connecting rod part by a feather planting piece. Meanwhile, the hair-planting pieces are connected through connecting ribs to form a coil-like structure.
The three-section type badminton is characterized in that the feather pieces are shortened to about 48mm due to the use of the feather planting frame, so that short feathers which cannot be used by the traditional two-section type badminton are utilized, and the feather cost is greatly reduced. Meanwhile, when the three-section type badminton is impacted, the artificial feather planting frame formed integrally can deform to partially absorb the instant impact force, so that the feather pieces are not easy to break, and the service life of the three-section type badminton is longer than that of the traditional two-section type badminton. Meanwhile, the consistency of the three-section type shuttlecock enables the three-section type shuttlecock to be mechanically produced, so that the cost is further reduced. However, the feather planting frame of the three-section type badminton is easy to deform, and the hand feeling of the feather planting frame is different from that of the traditional two-section type badminton at the moment of touch. The existing three-section type badminton cannot achieve the striking sense and the flying track of the traditional two-section type badminton. Therefore, there is a need for continuous optimization of the feather planting device of the three-section shuttlecock.
Disclosure of Invention
The utility model aims to solve the technical problem of the existing three-section badminton, and provides a three-section badminton feather implanting piece which enables the hitting feeling and the flying track of the three-section badminton to be more similar to those of the traditional two-section badminton.
The utility model relates to an integrated hair-planting piece, which comprises a hair-planting tube, a hair-planting rod, a bottom plate, connecting ribs and a mounting part.
The number of the hair planting tubes and the hair planting rods is the same as that of the feathers, the hair planting tubes are internally provided with the feathers inserting holes, the feathers inserting holes are opened on the top surface of the hair planting tubes, the tail part of one hair planting tube is connected with the head part of one hair planting rod to form a connector of one feathers, and after the feathers are inserted into the feathers inserting holes, the feathers, the hair planting tubes and the hair planting rods are basically in the same straight line. Two adjacent connectors are connected through connecting ribs, a plurality of connecting ribs on the same plane form a connecting ring, and the number of the connecting rings is 1-3. The tail part of the hair planting rod is connected with the bottom plate, and a plurality of connectors are uniformly distributed along the edge of the bottom plate to form an inverted truncated cone-shaped connector combination.
The section of the capillary tube is circular, quadrilateral or polygonal; the pinna jack is a hole with a square cross section; the bottom plate is a round flat plate or a regular polygon flat plate, and the number of edges of the regular polygon is the same as that of the feathers; the mounting seat is cylindrical or the cross section of the mounting seat is a regular polygon, and the upper end surface of the mounting seat is fixedly connected with the bottom surface of the bottom plate.
Further, the pinna jack is square on a horizontal cross section perpendicular to the central axis of the hair planting piece; the steering angle alpha of each vane jack is the same, and alpha is more than or equal to 0 degree and less than or equal to 30 degrees; the deflection angles beta of any two adjacent pinna jacks are the same, and beta=360°/n is the number of pinna jacks.
The steering angle alpha is an included angle between a vertical connection OO' between a central point O of the square cross section of the pinna jack and a central shaft of the hair planting piece and one side line of the square cross section of the pinna jack on the horizontal cross section.
The deflection angle beta is an included angle between corresponding sides of square cross sections of two adjacent pinna jacks on the horizontal cross section; the distance from the two end points of one side of the square cross section to the central axis of the hair-planting piece is the same as the distance from the two end points of the other side of the square cross section to the central axis of the hair-planting piece, and the two sides are the corresponding sides.
Further, the steering angle alpha is 10-15 degrees. The steering angle alpha is an angle for clockwise overturning of one side of the square cross section of the pinna jack, which is opposite to the bottom plate, by taking the central point O as a rotation center.
Because of the consistency of the bristle planting pieces, more mechanical and automatic equipment is adopted for inserting balls, and the automatic machine can have a relatively consistent angle. The feather inserting holes are designed to be square holes in cross section, and when the feather rod is implanted, the square holes play a role in guiding the square feather rod, so that the feather rod is implanted according to the same angle, and when the implanted feather pieces are mechanized, the included angles between two adjacent feather wings are basically consistent.
The vane insertion holes with the same steering angle alpha are set, and the vanes form vortex by adopting a sideways dislocation superposition mode. A certain gap is reserved between every two adjacent feathers, so that the gap is required to be the same as much as possible in order to ensure that the shuttlecock can fly stably. Each pinna has a steering angle, and when the steering angles of two adjacent pinna are consistent, the gap between the two adjacent pinna can be ensured to be basically the same.
The shuttlecocks in each country and region have different consumption habits, and the indonesia, vietnam, india and the like the shuttlecocks with small rotation speed, while the China, malaysia and the like the shuttlecocks with a little higher rotation speed, and the rotation speed of the shuttlecocks in the flying process is largely determined by the included angle of the wings of two adjacent feather pieces. According to the requirement, the rotation of the badminton can be increased or reduced by changing the size of alpha, so that the badminton is applicable to various requirements. The deflection angles beta of any two adjacent feather rod positioning holes are the same, so that the deflection angles of all feather plates are consistent, and the stability of the badminton is improved. According to the consumption habits of shuttlecocks in different countries and regions, the included angles of the wings of two adjacent feather pieces conforming to the consumption habits of the shuttlecocks are set in advance when the mold is manufactured, and the consumption habits of different countries and regions are used as the basis.
Further, the center of the bottom plate is provided with a through hole, and the bottom plate is an annular flat plate. The through holes may be circular, square or regular polygonal holes. The design can reduce the weight of the feather planting piece, so that the feather planting piece meets the weight requirement of the badminton.
Further, the plug connector is provided with a reinforcing rib, and the reinforcing rib is arranged towards the central axis of the hair planting piece.
Further, the upper end face of the bottom plate is provided with a reinforcing ring, and the horizontal cross section of the reinforcing ring is circular or regular polygonal.
Still further, the head of stiffening rib start at planting the capillary, the bottom extends to the bottom plate, sets up along the lateral wall of plug connector promptly, in order to further improve the supporting effect of stiffening rib, can start the head of stiffening rib at planting the capillary, set up along the whole lateral wall of plug connector promptly, the cross section of stiffening rib expands gradually from top to bottom. If the reinforcing ring is arranged, the edge of the reinforcing rib is connected with the outer wall of the reinforcing ring.
In order to further improve the rigidity of the hair-planting piece, the inner side of the plug connector is added with an inclined supporting surface and is enlarged. The starting point of the traditional supporting surface is positioned on the hair-planting rod below the intersection point of the hair-planting tube and the hair-planting rod, the end point of the supporting surface falls on the bottom plate, and the distance between the intersection point of the supporting surface and the bottom plate and the central axis of the hair-planting frame is more than 10mm, so that the actual supporting effect of the inclined supporting surface on the hair-planting piece is limited. The utility model enlarges the area of the supporting surface, the starting point of the supporting surface is positioned on the hair-planting tube, even starts from the opening of the hair-planting tube, and the distance from the crossing point of the inclined supporting surface and the bottom plate to the central axis of the hair-planting frame is less than 10mm, even positioned on the central axis of the hair-planting frame, thereby further guaranteeing the rigidity of the hair-planting piece.
Further, the aperture of the pinna jack is gradually increased near the opening to form a flared opening, and the opening and the hole wall are transited through an arc surface. The aperture of the pinna jack is gradually reduced from opening to bottom, namely, the pinna jack has a certain taper in the longitudinal direction.
The design can facilitate the implantation of the pinna, after the hairpins of the pinna are implanted into the pinna jacks, the closer the hairpins are to the openings, the larger the gaps between the hairpins and the pinna jacks are, and the implantation firmness of the pinna is improved through glue adding and solidification.
Further, the cross section of the feather planting rod is V-shaped, Y-shaped or U-shaped, the side wall of the feather planting rod facing to the outer direction of the badminton is provided with an opening, and the opening is arranged along the longitudinal direction of the feather planting rod and is outwards away from the central axis of the badminton. Further, the cross section of the hair-planting rod is gradually enlarged from top to bottom.
The prior art designs the hair-planting rod with cross-shaped, T-shaped and triangular cross sections and the deformation thereof. Because the feather planting rods are all of solid design, the badminton has poor rigidity because the feather planting rods can only be made to be very thin in consideration of the overall weight of the badminton. The cross section of the feather planting rod connected with the feather planting pipe and the bottom plate is designed into a V shape, a Y shape or a U shape, so that the supporting force of the feather planting pipe Mao Gandui is ensured and improved, and meanwhile, the weight of the feather planting rod is reduced, so that the feather planting rod meets the weight requirement required by the badminton. The cross section of the hair planting rod is gradually enlarged from top to bottom, and the hair planting rod can better play a supporting role.
In summary, the feather implanting piece of the badminton disclosed by the utility model ensures the consistency of the included angle between two adjacent feather wings when the feather is mechanically implanted through the optimized design of the feather implanting tube and the feather inserting hole, and also improves the implantation firmness of the feather. The pinna jack adopts various designs, thereby facilitating pinna insertion and meeting the consumption habits of shuttlecocks in different countries and regions. According to the utility model, through the optimal design of the feather planting rod, the rigidity of the feather planting piece is increased, the supporting force of the feather planting pipe for planting Mao Gandui is improved, and the weight of the feather planting rod is reduced, so that the weight of the feather planting piece is reduced, and the weight requirement of the badminton is met. The utility model ensures the overall strength requirement of the feather planting piece and the overall weight requirement of the shuttlecock, so that the hitting feeling and the flying track of the shuttlecock are more similar to those of the traditional two-section shuttlecock.
Drawings
FIG. 1 is a schematic view of a three-segment shuttlecock utilizing the present utility model;
FIG. 2 is a schematic side elevational view of the bristle implant of the present utility model;
FIG. 3 is a schematic top view of the hair implant of the present utility model;
FIG. 4 is a longitudinal cross-sectional view of one embodiment of a hair implant of the present utility model;
FIG. 5 is a longitudinal cross-sectional view of another embodiment of a hair implant of the present utility model;
FIG. 6 is a schematic view of a plume receptacle;
FIG. 7 is a schematic view of a longitudinal section of a capillary tube;
fig. 8 is a schematic diagram of the positional relationship of the insertion holes of the hair-planting tube pinna.
Detailed Description
As shown in figure 1, the three-section badminton feather planting piece is used for connecting a feather I and a ball head II of a badminton.
As shown in fig. 2, 3 and 4, the integrally formed hair-planting member comprises a hair-planting tube 1, a hair-planting rod 2, a bottom plate 3, a connecting rib 4, a mounting seat 5 and a reinforcing rib 6.
The number of the hair planting tubes 1 and the hair planting rods 2 is the same as that of the feathers, the cross section of the hair planting tubes 1 is circular, quadrilateral or polygonal, a feathers jack 1-1 is arranged in each hair planting tube 1, the feathers jack 1-1 is opened on the top surface of each hair planting tube 1, and the tail of one hair planting tube 1 is connected with the head of one hair planting rod 2 to form a pinboard plug-in unit III. After the pinna is inserted into the pinna jack 1-1, the hairpins of the pinna, the hair planting tube 1 and the hair planting rod 2 are basically on the same straight line. Two adjacent connectors III are connected through the connecting rib 4, and a plurality of connecting ribs 4 on the same plane form a connecting ring, and the connecting ring is 1-3, adopts two connecting rings in this embodiment: the first channel is positioned at the upper end part of the plug connector III, and the second channel is positioned at the junction of the hair planting tube 1 and the hair planting rod 2 of the plug connector III.
The tail of the hair planting rod 2 is connected with the edge of the bottom plate 3, and a plurality of connectors III are uniformly distributed along the edge of the bottom plate 3 to form an inverted truncated cone-shaped connector combination.
The cross section of the feather planting rod 2 is V-shaped, Y-shaped or U-shaped, the side wall facing the outer direction of the shuttlecock is provided with an opening, and the opening is outwards arranged far away from the central axis of the shuttlecock. The cross section of the hair-planting bar 2 can be gradually enlarged from top to bottom.
The bottom plate 3 is a round flat plate or a regular polygon flat plate, and if the bottom plate is a regular polygon, the number of sides is the same as the number of feathers. The center of the bottom plate 3 is provided with a through hole 3-1, and the through hole 3-1 can be a round, square or regular polygon hole.
The central axis of the plug-in connector III facing the badminton is provided with a reinforcing rib 6. The head of the reinforcing rib 6 starts from the capillary 1, the bottom extends to the bottom plate 3, namely, is arranged along the side wall of the plug connector III, and the cross section of the reinforcing rib 6 gradually expands from top to bottom. The head of the stiffening rib 6 in this embodiment starts from the head of the tube 1 and the bottom extends to the bottom plate 3, i.e. along the entire side wall of the plug element iii.
As shown in fig. 4, the mounting seat 5 is cylindrical, or the cross section is cylindrical with a regular polygon, and the upper end surface of the mounting seat 5 is fixedly connected with the bottom surface of the bottom plate 3. Correspondingly, the ball head is provided with an annular groove. When in installation, the installation cylinder 6 is inserted into the annular groove, and the bristle planting piece and the ball head can be fixedly connected through adhesive bonding.
As shown in fig. 5, the upper end surface of the bottom plate 3 is provided with a reinforcing ring 7, and the horizontal cross section of the reinforcing ring 7 is circular or regular polygonal. At this time, the edge of the reinforcing rib 6 is connected with the outer wall of the reinforcing ring 7, so that the strength of the hair planting piece is further enhanced.
As shown in fig. 6 and 7, the cross section of the capillary 1 is circular, the cross section of the pinna jack 1-1 is square, the aperture of the pinna jack 1-1 is gradually increased near the opening to form a horn-shaped opening, and the opening and the hole wall are transited through an arc surface. The plume insertion hole 1-1 gradually decreases from opening to bottom aperture.
As shown in FIG. 8, the vane insertion holes 1-1 are square in a horizontal cross section perpendicular to the central axis of the hair-planting member, and the turning angle alpha of each vane insertion hole 1-1 is the same, and is 0 DEG.ltoreq.alpha.ltoreq.30 DEG, preferably 10 DEG to 15 deg. In this embodiment α=12°. The steering angle alpha is the included angle between the vertical connection OO' of the central point O of the square cross section of the pinna jack 1-1 and the central axis of the hair planting piece and one side line of the square cross section of the pinna jack 1-1 on the horizontal cross section. Because the pinna jack 1-1 is a square hole, two of four angles between four sides of the square cross section and the connecting line OO' are steering angles alpha, and the other two angles are 90-alpha. The steering angle alpha is the clockwise turning angle of the square cross section of the pinna jack 1-1, which is opposite to the side of the bottom plate 3, by taking the central point O as the rotation center.
The deflection angles beta of any two adjacent pinna jacks 1-1 are the same, and beta=360°/n, n is the number of pinna jacks 1-1. In this example, 16 feathers are used, β=22.5 °. The deflection angle beta is the included angle between the corresponding sides of the square cross sections of the adjacent two pinna jacks 1-1 on the horizontal cross section. The distance from the two end points of one side of the square cross section to the central axis of the hair-planting piece is the same as the distance from the two end points of the other side of the square cross section to the central axis of the hair-planting piece, and the two sides are the corresponding sides. In fig. 7, the AA 'side and the BB' side, and the BB 'side and the CC' side are two pairs of corresponding sides.
Claims (8)
1. The utility model provides a syllogic badminton is planted hair spare for connect feather (I) and bulb (II) of badminton, including planting hair pipe (1), planting hair pole (2), bottom plate (3), connecting rib (4) and mount pad (5), plant hair pipe (1), plant hair pole (2), bottom plate (3), connecting rib (4) and mount pad (5) integrated into one piece, its characterized in that:
the number of the feather planting tubes (1) and the number of the feather planting rods (2) are the same as that of the feathers of the shuttlecock, a feather inserting hole (1-1) is formed in the feather planting tubes (1), and the feather inserting hole (1-1) is opened on the top surface of the feather planting tubes (1); the pinna jack (1-1) is a hole with a square cross section; the pinna jacks (1-1) are square on the horizontal cross section perpendicular to the central axis of the hair planting piece, and the steering angle alpha of each pinna jack (1-1) is the same and is more than or equal to 10 degrees and less than or equal to 15 degrees; the deflection angles beta of any two adjacent pinna jacks (1-1) are the same, and beta=360 degrees/n, wherein n is the number of the hair planting tubes (1);
the steering angle alpha is an included angle between a vertical connecting line OO' of a central point O of the square cross section of the pinna jack (1-1) and the central axis of the hair planting piece and one side line of the square cross section of the pinna jack (1-1) on the horizontal cross section;
the deflection angle beta is an included angle between corresponding sides of square cross sections of two adjacent pinna jacks (1-1) on the horizontal cross section; the distance from two end points of one side of the square cross section to the central axis of the hair-planting piece is the same as the distance from two end points of the other side of the square cross section to the central axis of the hair-planting piece, and the two sides are the corresponding sides;
the aperture of the pinna jack (1-1) is gradually reduced from the opening to the bottom, and the opening of the pinna jack (1-1) and the hole wall are transited through an arc surface to form a horn-shaped opening;
the tail of one hair planting pipe (1) is connected with the head of one hair planting rod (2) to form a pinna plug connector (III), two adjacent plug connectors (III) are connected through connecting ribs (4), a plurality of connecting ribs (4) on the same plane form a connecting ring, and the connecting ring is 1-3 channels; the tail part of the hair planting rod (2) is connected with the bottom plate (3), and a plurality of connectors (III) are uniformly distributed along the edge of the bottom plate (3) to form an inverted truncated cone-shaped connector assembly;
the cross section of the capillary tube (1) is circular, quadrilateral or polygonal;
the bottom plate (3) is a round flat plate or a regular polygon flat plate, and the number of edges of the regular polygon is the same as that of the feathers; the center of the bottom plate (3) is provided with a through hole (3-1) to form an annular bottom plate; the through hole (3-1) is round or regular polygon;
the mounting seat (5) is cylindrical or the cross section of the mounting seat is cylindrical with a regular polygon, and the upper end surface of the mounting seat (5) is fixedly connected with the bottom surface of the bottom plate (3).
2. A three-piece shuttlecock feather implant as claimed in claim 1 wherein: the steering angle alpha is an angle for clockwise overturning the side of the square cross section of the pinna jack (1-1) back to the bottom plate (3) by taking the central point O as a rotation center.
3. A three-piece shuttlecock feather implant as claimed in claim 1 wherein: the connector (III) is provided with a reinforcing rib (6), and the reinforcing rib (6) is arranged towards the central axis of the hair-planting part.
4. A three-piece shuttlecock feather implant as claimed in claim 1 wherein: the upper end face of the bottom plate (3) is provided with a reinforcing ring (7), and the horizontal cross section of the reinforcing ring (7) is circular or regular polygonal.
5. A three-piece shuttlecock feather holder as claimed in claim 3 wherein: the head of the reinforcing rib (6) starts from the capillary tube (1) and the bottom extends to the bottom plate (3), namely, the reinforcing rib is arranged along the side wall of the plug connector (III), and the cross section of the reinforcing rib (6) is gradually enlarged from top to bottom.
6. A three-piece shuttlecock feather implant as claimed in claim 4 wherein: the head of the reinforcing rib (6) starts from the capillary tube (1) and the bottom extends to the bottom plate (3), namely, the reinforcing rib is arranged along the side wall of the plug connector (III), the cross section of the reinforcing rib (6) is gradually enlarged from top to bottom, and the edge of the reinforcing rib (6) is connected with the outer wall of the reinforcing ring (7).
7. A three-piece shuttlecock feather implant as claimed in claim 1 wherein: the cross section of the feather planting rod (2) is V-shaped, Y-shaped or U-shaped, the side wall of the feather planting rod facing the outer direction of the badminton is provided with an opening, and the opening is arranged along the longitudinal direction of the feather planting rod (2) and is outwards away from the central axis of the badminton.
8. A three-piece shuttlecock feather implantation member as claimed in claim 7, wherein: the cross section of the hair planting rod (2) is gradually enlarged from top to bottom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018100424717 | 2018-01-17 | ||
| CN201810042471 | 2018-01-17 |
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| CN108525256A CN108525256A (en) | 2018-09-14 |
| CN108525256B true CN108525256B (en) | 2023-08-18 |
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| CN201810232928.0A Active CN108525256B (en) | 2018-01-17 | 2018-03-21 | Three-section badminton feather planting piece |
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| CN109999452A (en) * | 2019-04-28 | 2019-07-12 | 舒浩 | A kind of badminton ball head bracket |
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| CN108525256A (en) | 2018-09-14 |
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