The present invention relates to a method and apparatus for the launching of badminton shuttlecocks.
Many sports utilize machines for performing a competitive movement in order to provide practice for its players. For instance, a wide variety of ball throwing machines employ counter rotating wheels that have been utilized in the past for activities such as tennis, ping pong, and baseball. These machines automatically launch the balls at different speeds, styles, trajectories. The use of the machines permits a player to practice without requiring a partner or, allows an instructor to dedicate more of his or her time and focus on a player or group of players being trained, and allows an instructor to provide instruction on more than one court at the same time.
However, in the game of badminton, the shape of a shuttlecock is much more complex and is naturally inconsistent with that of a spherical ball. A shuttlecock is a high-drag projectile with an open conical shape. The cone is formed from approximately sixteen overlapping feathers, usually goose or duck and from the left wing only, embedded into a rounded cork base. The cork is covered with thin leather. The shuttlecock's shape makes it extremely aerodynamically stable. These unique aerodynamic properties cause it to fly differently than balls used in most racquet sports; in particular, the feathers create much higher drag, causing the shuttlecock to decelerate more rapidly than a ball. Shuttlecocks have a much higher top speed compared to other racquet sports. Regardless of initial orientation, it will turn to fly cork first, and remain in the cork-first orientation.
It has been proposed in the art to provide machines for launching shuttlecocks. However, due to the irregularities of the shuttlecock's quality and shape, it has been a challenge to provide an apparatus that is reliable, consistent, accurate, low maintenance, and cost efficient.
The present invention provides a device for reducing these problems. The difficulties inherent in the art are therefore overcome in a way which is simple and efficient, while providing better and more advantageous results.
The present invention is a method and apparatus for the launching of badminton shuttlecocks at different frequencies, trajectories, speeds, spins, and shot types. More particularly, the invention is an easy to use, reliable, accurate and programmable shuttlecock launcher notwithstanding the varying quality and condition of the shuttlecock, for purposes of recreation, training aid, teaching aid, and shuttlecock speed testing.
The invention is the first of its kind to provide a shuttlecock launching apparatus that is simple and cost efficient, yet reliable, consistent, and most importantly accurate. In accordance with the invention, a method and apparatus is provided for the launching of badminton shuttlecocks at different frequencies, trajectories, shot types, spins and speeds, thereby providing simulated shots for use in practice for badminton players. The shuttlecock launching apparatus comprises a dual pivoting launch assembly having a launch point for launching shuttlecocks at a plurality of launch angles, first and second launching wheels mounted on the dual pivoting launch assembly, a shuttlecock holding and transfer assembly mounted on the dual pivoting launch assembly adjacent to the first and second launching wheels. The holding and transfer assembly comprises a holding area for receiving and holding a single shuttlecock and a shuttlecock transfer mechanism for transferring the shuttlecock from the holding area to the launch point which provides the ability to receive, hold, and transferring on queue a single shuttlecock to the launch point. The launch angle provided by the dual pivoting launch assembly coordinated with the variable rotational speeds of the first and second launch wheels provides a trajectory, velocity and launching of the shuttlecock.
A programmable control system controls the operation of the apparatus including all components thereof. The control system controls the operation of both the dual pivoting launch assembly and independent wheel velocities of the first and second launching wheels, trajectory, and/or spin to a shuttlecock for launching the shuttlecock from the apparatus toward an intended location or for a desired shot type. The control system further controls the coordinated operation and timing of the holding and transfer assembly to control when each launch takes place by placing the shuttlecock to the launch point. The launch angle and launch path, independent wheel velocities, and operation of the holding and transfer assembly are predetermined by parameters defining the path of a launched shuttlecock for an intended simulated shot.
In one version, the holding and transfer assembly further comprises a pair of horizontally disposed guidance rails for guiding the shuttlecock to the launch point and beyond in an upright position while the shuttlecock transfer mechanism transfers the shuttlecock from the holding area to the launch point, whereby ensuring accurate delivery and accuracy of the launch.
In another version, the apparatus further comprises first and second fenders adjacent to the corresponding first and second launching wheels, which provide a barrier to prevent the shuttlecock from contacting the first and second wheels before the shuttlecock reaches the launch point during the transfer of the shuttlecock.
In yet another version, the holding area of the holding and transfer assembly comprises a rear fixed portion and a front gate portion. The front gate portion is configured to move in a path of motion that has at least an open position and a closed position. The gate portion in the closed position and the rear fixed portion collectively form a cone shaped holding area adapted to receive and hold a single shuttlecock. In this version, the shuttlecock transfer mechanism comprises a rear thrust member for providing forward motion to the shuttlecock. The rear thrust member is configured to provide the forward motion simultaneously as the front gate portion moves into the open position, thereby transferring the shuttlecock from the holding area to the launch point.
In another version of the invention, the shuttlecock launcher may include a shuttlecock distribution system. The shuttlecock distribution system comprises a shuttlecock storage container capable of housing a stack of one or more shuttlecocks; an apparatus for applying a controlled force on the stack of one or more shuttlecocks providing a downward movement of the one or more shuttlecocks within the shuttlecock storage device; a shuttlecock filter located at the bottom opening of the shuttlecock storage container for receiving and separating the bottom shuttlecock from the stack of one or more shuttlecocks as the stack of one or more shuttlecocks moves downward within the shuttlecock storage device; and a vertical shuttlecock transfer assembly for transferring a single shuttlecock from the shuttlecock filter to the holding area in a controlled manner. The shuttlecock distribution system is controlled by a programmable control system for coordinated operation and timing sequence of the shuttlecock distribution system components, which serves to separate and distribute to the holding area a single shuttlecock from a stack of one or more shuttlecocks in a coordinated manner. The shuttlecock distribution system can operate in a parallel and simultaneous manner with the controlled operation of the shuttlecock launching apparatus, thus reducing time between launches and providing the availability of increased shot frequency for top level players.
In an a version of the invention, a method for launching a single shuttlecock may be utilized which comprises: providing a dual pivoting launch assembly providing a plurality of launch angles; providing a first and second launching wheels; providing a holding and transfer assembly comprising: a holding area for receiving and holding a single shuttlecock, and a shuttlecock transfer mechanism for transferring the shuttlecock from the holding area to the first and second launching wheels; loading a single shuttlecock within the holding area of the holding and transfer assembly; moving the dual pivoting launch assembly to a desired launch angle; shuttlecock transfer mechanism transferring the single shuttlecock to the first and second launching wheels; and first and second launching wheels launching the single shuttlecock along a launch path.
In another version of the invention, a method for separating a single bottom shuttlecock from a stack of one or more shuttlecocks may be utilized which comprises: providing a shuttlecock filter comprising a narrowing diameter forming a filter channel; receiving the bottom of the stack of one or more shuttlecocks within the filter; and applying a force to the top of the stack of one or more shuttlecocks, wherein imparting movement of the stack towards and the bottom shuttlecock through the narrowing diameter until the top of the bottom shuttlecock passes through the shuttlecock filter, thereby separating the bottom shuttlecock from the remaining stack of one or more shuttlecocks.
The shuttlecock launcher can simulate practically any type of badminton shot to substantially all locations of a practice area or badminton court and even shots that are out of the court. Furthermore, the shuttlecock launcher can perform tricks shots by providing unique angles, and differences in wheel rotation and wheel velocities. Although simple and cost efficient, the new shuttlecock launcher remains reliable, consistent, and accurate.
Still other benefits and advantages of the invention will become apparent to those skilled in the art to which it pertains upon a reading and understanding of the following detailed specification.
These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Referring now to the drawings wherein the showings are for purposes of illustrating preferred versions of the invention only and not for purposes of limiting the same, the present invention is a reliable and yet cost effective shuttlecock launcher that has the ability to simulate realistic shots at different frequencies, trajectories, speeds, spins, and shot types.
The following detailed description is of the best currently contemplated modes of carrying out exemplary versions of the invention. The description is not to be taken in the limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.
Various inventive features are described below that can each be used independently of one another or in combination with other features.
The present invention is described below with respect to a launched shuttlecock.
As a general overview,
The first pivoting frame 116 is attached and rotatable about the first axis A by one or more rivets 129 or other axle means to the fixed frame mount 114. In the illustrated version, the horizontal displacement of the first pivoting frame has a range of motion of approximately +/−60 degrees from the center, default position or 120 degrees total about the axis A. The second pivoting frame 118 is attached by one or more rivets 131 or other axle means of rotation to the first pivoting frame 116. In the illustrated version, the vertical displacement of the second pivoting frame has a range of motion of approximately +/−60 degrees from the center, default position or 120 degrees total about the axis B.
The second pivoting frame 118 is moved to the right or left about the second axis B by a controlled rotary actuator 130 mounted on the first pivoting frame 116, and the first pivoting frame 116 is moved upwards and downwards about the first axis A by a controlled rotary actuator 128 mounted on the fixed frame mount 114. In the preferred version, the rotary actuators 128 and 130 are a servomotor that allows for precise control of the angular position of each frame. Ideally, the servomotor axels are aligned with the rotating axis. It will be known that other rotary actuators may be utilized such as standard electric motors and motors coupled with gear sets.
The fixed frame mount 114 may be fixedly mounted to a base or stand or anything that would be adequate to support the version in a fixed, operable position. It will also be known that the dual pivoting launch assembly can be configured to rotate in any manner that achieves the desired range of launch paths. For example, in an alternative version, a first pivoting frame is coupled with a fixed frame that is configured to rotate about a fixed vertical axis and a second pivoting frame is coupled with the first frame to rotate about a second horizontal axis, thus achieving the desired launch angle and launch path.
Referring now to
The holding area 134 comprises a semi-cone shaped area adaptable to receive and hold a single shuttlecock 10 in a loaded position. The semi-cone shaped area is formed by a rear fixed portion 140 and a front gate portion 142. The shuttlecock transfer mechanism 138 is a rotating assembly that comprises a central rotating member 144, including the front gate portion 142, and a rear thrust member 146. The central rotating member 144 rotates about a vertical axis S actuated by a rotary actuator 148 having a forward end 150 and a rearward end 152. The front gate portion 142 is affixed near the forward end 150 of the central rotating member 144 and thus forms to enclose the holding area 134 while in a closed position. The rear thrust member 146 is generally horizontally affixed near the rearward end 152 of the central rotating member 144 and is aligned substantially in the same horizontal plane which passes through the shuttlecock base 14 of the shuttlecock 10 while in the loaded position within the holding area 134. The front gate portion 142 is configured to move in a path of motion that has at least an open position and a closed position. The rear thrust member 146 is configured to provide the forward motion to the shuttlecock 10 simultaneous the front gate portion 142 moves into the open position, thereby transferring the shuttlecock from the holding area 134 to the launch point 104 which is further described below. The circular motion of the transfer mechanism is driven by a rotary actuator 148 or digitally controlled electric motor.
The shuttlecock transfer mechanism 138 further includes a front gate support member 154 and a lower shuttlecock support member 156. The front gate support member 154 connects the front gate portion 142 to the forward end 150 of the central rotating member 144. The lower shuttlecock support member 156 is utilized to further support the shuttlecock base 14 of a shuttlecock 10 while the shuttlecock 10 is in the loaded position further described below.
Referring back to
More particularly, the first and second launching wheels 108, 110 are spaced apart by a distance slightly less than the diameter of the shuttlecock base 14 for a tight grip during launch. The version further comprises first and second fenders 158 and 160 that are positioned adjacent to the rear of the first and second launching wheels 108, 110 which assist in guiding the shuttlecocks to the launch point. This provides a consistent and accurate contact with the first and second launching wheels 108, 110. The first and second launching wheels 108 and 110 are independently driven by first and second rotatory actuators 162 and 164. In the preferred version, the rotary actuators can be variable speed brushless motors that are digitally controlled.
In the version, all moving mechanical parts are electronically controlled and orchestrated by a programmable control system 30 utilizing certain launch parameters and other mechanical movements. The launch parameters comprise of the launch path created by the angular movement of the first and second pivoting frames 116, 118 about the first axis A and the second axis B; the launching speed or shot type of the shuttlecock is determined by the independent velocities of the first and second launching wheels 108, 110; and the frequency of the launches determined by the activation timing of the operation of the shuttlecock holding and transfer assembly 112. The launching parameters can vary according to the impact point locations, shot type, stroke type, and training level of the player. The programmable control system 30 orchestrates the launch sequences by sending and receiving signals from and to all of the components and mechanical parts by executing a pre-programmed series of shots in a specific sequence or a random sequence; or under the direct input or control by the operator via a control interface such as a remote control or other attached or tethered display.
The basic method of a version of the invention is as follows which comprises: providing a dual pivoting launch assembly 102 providing a plurality of launch angles; providing a first and second launching wheels 108, 110; providing a holding and transfer assembly 112 comprising: a holding area 134 for receiving and holding a single shuttlecock 10, and a shuttlecock transfer mechanism 138 for transferring the shuttlecock from the holding area 134 to the first and second launching wheels 108, 110; loading a single shuttlecock 10 within the holding area 134 of the shuttlecock holding and transfer assembly 112; moving the dual pivoting launch assembly to a desired launch angle and launch path 106; shuttlecock transfer mechanism 138 transferring the single shuttlecock 10 to the first and second launching wheels 108, 110; and first and second launching wheels 108, 110 launching the single shuttlecock 10 along a launch path 106.
Referring to
In the shuttlecock receiving phase, the launcher is in the default, neutral position as depicted by
According to the aiming phase and now referring to
The launch angle is adjustable and controlled by the control system 30 by rotating the first and second pivoting frames by rotating the corresponding rotary actuators 128, 130 based on the predetermined or random launch parameters stored by the programmable control system 30 for a desired badminton launch path 106 and trajectory. As illustrated in
The velocities of the first and second launching wheels 108 and 110 are achieved independently according to shot speed and shot type via the digitally controlled first and second rotary actuators 82 and 84 which are orchestrated by the programmable control system 30. Once the launch path 106 and desired wheel velocities have been achieved, the shuttlecock launcher version 100 is ready for launch.
The final phase of the launch is the controlled, consistent transfer of the shuttlecock to the launch point 104 contacting the first and second launching wheels 108, 110, thereby launching in the desired direction and at the desired speed in order to provide a desired badminton shot.
Referring now to
More particularly, as depicted by
A second version 200 of the shuttlecock launcher is depicted in
As depicted in
Referring to
The shuttlecock storage container holding assembly 224 as depicted in
The shuttlecock filter 210 comprises an filter level 242 and a lower suspending level 244 defining a filter channel 246. The filter level 242 is adapted to receive the bottom of the stack of the one or more shuttlecocks 206 from the shuttlecock storage container 204. The filter level 242 comprises a circular upper opening 248 with a first diameter 250 and a lower circular opening 252 with a second diameter 254. Preferably, the first diameter 250 is approximately 2.5 inches and the second diameter 254 is 2 inches. The filter level 242 gradually narrows in diameter radially and longitudinally from the circular upper opening 248 to the lower circular opening 252, wherein the lower circular opening 252 creates a ledge which separates the filter level 242 from the lower suspending level 244 of the shuttlecock filter 210.
The lower suspending level 244 is adapted to suspend a single shuttlecock 10 by its upper portion 16 which has been filtered from the stack of one or more shuttlecocks 206 by the filter level 242. The lower suspending level 244 comprises a similar radially narrowing of the diameter from top to bottom similar to the filter level 242. The lower suspending level 244 comprises a circular upper opening 256 with a third diameter 258 and a lower opening 260 with a fourth diameter 262. Preferably, the third diameter 258 is approximately 2.5 inches and the fourth diameter 262 is 2 inches. The lower suspending level 244 gradually narrows in diameter radially and longitudinally from the circular upper opening 256 to the lower opening 260, wherein the lower suspending level suspends a single shuttlecock 10 by its upper portion 16, wherein the shuttlecock 10 is ready to be retrieved.
With reference to
The basic method utilized by the shuttlecock distribution system 202 of separating a single shuttlecock from a stack of one or more shuttlecocks 206 as follows: providing a shuttlecock filter 210 comprising a narrowing diameter forming a filter channel 246; receiving the bottom of the stack of one or more shuttlecocks 206 within the shuttlecock filter 210; applying a force to the top of the stack of one or more shuttlecocks, wherein imparting movement of the stack towards and the bottom shuttlecock through the narrowing diameter until the top of the bottom shuttlecock passes through the shuttlecock filter 210, thereby separating the bottom shuttlecock from the remaining stack of one or more shuttlecocks; suspending the separated shuttlecock below the filter; and transferring and loading the suspended shuttlecock to the holding area 134 of the holding and transfer assembly 112.
Referring to
The shuttlecock distribution system 202 can be controlled by a programmable control system 30 as depicted in
In more detail, the loading and filtering of the stack of one or more shuttlecocks 206 in the version will be explained. Firstly, the loaded shuttlecock storage container 204 is engaged with the shuttlecock storage container holding assembly 224 and the shuttlecock filter 210 in a secure manner. Subsequently, the control system 30 engages the crane assembly 232 which lowers the weight 234 in a controlled manner via the cord 236, winding drum 238 (or pulley) and rotary actuator 240; thereby applying a downward force applied in a central manner to the stack of one or more shuttlecocks 206 nested within the shuttlecock storage container 204. As the downward force is being applied, the stack of one or more shuttlecocks 206 moves downward within the shuttlecock storage container 204. Concurrently, the bottom shuttlecock of the stack of one or more shuttlecocks 206 moves downward into the filter level 242 of the shuttlecock filter 210. As the bottom shuttlecock moves down through the shuttlecock filter 210, the narrowing diameter of the filter level 242 naturally squeezes the bottom shuttlecock into a smaller diameter until the shuttlecock passes the lower circular opening 252 which defines a ledge. At that point, as depicted in
As depicted in
Once the shuttlecocks are exhausted, the shuttlecock distribution system 202 has the ability to detect the absence of shuttlecocks by a sensor that detects a slack in the cord that is created when the weight is at the bottom of the filter/storage container. At this point, the crane automatically retracts the weight until a sensor is triggered signaling that the weight is in the raised default position. Additionally, a weight lock can be utilized during storage to secure the weight from moving around or becoming loose.
Moreover, the version may provide the following features. Shuttles can easily wear and tear and can have broken feathers which frequently causes the stacked shuttlecocks to sometimes stick together or get stuck in the tube or filter. If such condition occurs, the crane assembly automatically detects and remedies the condition. In a version, a sensor detects a slack in the cord which—via the computer—signals the crane to raise and lower weight in a repeated and faster motion until the means for detecting a shuttlecock is triggered or until a predetermined number of attempts is reached. If the condition is not remedied the version automatically returns to the default raised position.
The present invention can be made in any manner and of any material chosen with sound engineering judgment such as plastics or metals, or a combination thereof. The materials may be strong, lightweight, long lasting, economic, and ergonomic. [More on materials]
Although preferred versions of the invention have been described in considerable detail, other versions and versions of the invention are possible. Therefore, the present invention should not be limited to the preferred versions described herein, but instead is defined by the spirit and scope of the appended claims.
The invention does not require that all the advantageous features and all the advantages need to be incorporated into every version of the invention.
All features disclosed in this specification including any claims, abstract, and drawings may be replaced by alternative features serving the same, equivalent or similar purpose unless expressly stated otherwise.
This application is based upon, and claims the priority filing date, of the previously-filed, copending U.S. Provisional patent application entitle “SHUTTLECOCK LAUNCHING APPARATUS” filed Mar. 1, 2013, Ser. No. 61/801,117.
Number | Date | Country | |
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61801117 | Mar 2013 | US |