Badminton damage assessment and repair methods

Abstract

This invention relates to a method for assessing and repairing badminton damage, used to repair a damaged shuttlecock. The method includes steps such as damage assessment, fabricating a replacement feather blade, and replacing the damaged feather. In the damage assessment step, it is confirmed that the shuttlecock is damaged in that one or two feathers are broken. In the replacement feather blade step, a blade is cut according to the shape of a feather to form a replacement feather blade. In the replacement feather step, the broken feathers are removed, and then the replacement feather blade is inserted into the shuttlecock tip and fixed with adhesive. By fabricating a replacement feather from a moderately heavy, strong, and readily available blade in the early stages of shuttlecock damage and replacing the broken feathers, the flight trajectory and stability of the damaged shuttlecock are significantly improved, restoring its performance to the same level as a normal shuttlecock.

Claims

1. A method for assessing and repairing badminton damage, used to repair a damaged badminton shuttlecock, the damaged shuttlecock comprising a shuttlecock head and a plurality of feathers, one end of each feather being inserted into a feather fixing hole in the shuttlecock head, the method comprising the following steps: Damage assessment: when one or two of the feathers of the damaged shuttlecock are broken, the damaged shuttlecock is repaired; Fabrication of a replacement leaf: preparing a leaf having a central midrib and a feather pattern corresponding to the damaged shuttlecock, aligning the central midrib of the leaf with a feather shaft on the feather pattern, and cutting the leaf according to the outline of the feather pattern to form a replacement leaf; wherein, The leaf is a bamboo leaf; Replace the broken feather: Remove the broken feather from the head of the damaged shuttlecock to expose the corresponding feather fixing hole, then insert the front end of the leaf replacement feather into the exposed feather fixing hole and use adhesive to stick and fix the leaf replacement feather to the head of the shuttlecock; repeat the above steps until all the broken feathers are replaced with the leaf replacement feather, so that the damaged shuttlecock becomes a repaired shuttlecock.

2. The badminton damage assessment and repair method as described in claim 1, wherein in the "making a replacement feather leaf" step, the leaf leaf is first dried, and then the central vein of the leaf leaf is aligned with the quill of the feather pattern and the leaf leaf leaf is cut according to the outline of the feather pattern to form the replacement feather leaf leaf.

3. The badminton damage assessment and repair method as described in claim 2, wherein in the "making a replacement feather blade" step, the dried blade is bent along the central midrib and it is confirmed that there are no cracks when the blade is bent to an angle of less than 20 degrees. Then, the central midrib of the blade is aligned with the quill on the feather pattern and the blade is cut according to the outline of the feather pattern to form the replacement feather blade.

4. The badminton damage assessment and repair method as described in claim 3, wherein in the "making a replacement feather leaf" step, the dried leaf leaf is bent along the central midrib and it is confirmed that there are no cracks when the leaf leaf is bent to an angle of 15 degrees. Then, the central midrib of the leaf leaf is aligned with the quill of the feather pattern and the leaf leaf is cut according to the outline of the feather pattern to form the replacement feather leaf.

5. The badminton damage assessment and repair method as described in any one of claims 1 to 4, further comprising a "flight performance test" step, which is located after the "replace damaged shuttlecock" step; in the "flight performance test" step, a plurality of normal shuttlecocks and a serving machine are prepared, the serving machine sequentially launches the normal shuttlecocks in a launch direction and measures the flight distance and flight height of each normal shuttlecock; the serving machine launches the repair shuttlecock in the launch direction and measures the flight distance and flight height of the repair shuttlecock; when the flight distance of the repair shuttlecock is not within the range of the flight distances of the normal shuttlecocks, or when the flight height of the repair shuttlecock is not within the range of the flight heights of the normal shuttlecocks, the repair shuttlecock is repaired again.

6. The badminton damage assessment and repair method as described in claim 5, wherein the angle between the launch direction and the horizontal plane is between 40 and 50 degrees.

7. The badminton damage assessment and repair method as described in any one of claims 1 to 4, further comprising a "flight stability detection" step, which is located after the "replace damaged feather" step; in the "flight stability detection" step, a plurality of normal badminton shuttles and a vertical airflow generator are prepared; the vertical airflow generator includes a bottom opening and a top opening, the diameter of the top opening being smaller than the maximum outer diameter of each of the normal badminton shuttles; the shuttle heads of the normal badminton shuttles are sequentially inserted downward into the top opening and the vertical airflow generator is activated to keep the shuttle heads of the normal badminton shuttles suspended at the top opening, and the radial displacement of each normal badminton shuttle in the suspended state is measured; the shuttle head of the repair shuttle is inserted downward into the top opening and the vertical airflow generator is activated to keep the repair shuttle in the top opening, and the radial displacement of the repair shuttle in the suspended state is measured; when the displacement of the repair shuttle is greater than the displacement of the normal badminton shuttles, the repair shuttle is repaired again.

8. The badminton damage assessment and repair method as described in claim 7, wherein in the "flight stability test" step, the heads of the normal badminton shuttles are sequentially inserted downwards into a cylinder of the vertical airflow generator, and a fan of the vertical airflow generator is activated, and the vertical airflow generated by the fan is rectified by passing through a plurality of vertically extending and densely arranged tubes in the cylinder, the rectified vertical airflow keeping each of the normal badminton shuttles suspended in the cylinder; the shuttle to be repaired is inserted downwards into the cylinder of the vertical airflow generator, and the fan of the vertical airflow generator is activated, and the vertical airflow generated by the fan is rectified by passing through the tubes in the cylinder, the rectified vertical airflow keeping the repaired shuttle suspended in the cylinder.

9. The badminton damage assessment and repair method as described in claim 8, wherein in the "flight stability test" step, the fan of the vertical airflow generator is a circulating fan, the circulating fan is activated, and the vertical airflow generated by the circulating fan passes through the tubes in the cylinder to keep the normal badminton shuttles and the repaired badminton shuttles suspended in the cylinder.

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