JP3054844B2 - Shuttlecock set and adhesive sheet piece for weight adjustment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive sheet piece capable of adjusting the weight of a badminton shuttlecock.

[0002]

2. Description of the Related Art A badminton shuttlecock generally has a substantially spherical cock which is a hitting portion made of cork material, rubber or synthetic resin material, and a waterfowl wing or a plastic wing fixed to the cock. And a skirt portion composed of The smashed shuttlecock first smashes out the striking face like an arrow. At this time, the blade is deformed to the axis side, but immediately returns to its original shape. Due to the air resistance thus generated, the speed is rapidly reduced. Regarding the flight characteristics of the shuttlecock, the initial speed of the shuttlecock at the time of smashing is approximately 300 km / h, and the shuttlecock reaches a final speed of 0 km / h in a short time when reaching the opponent's court, and freely falls. The weight of this shuttlecock is about 5 g. If the weight changes by 0.1 g, the flight distance changes by about 35 cm even if the same full-strength impact is applied. Therefore, shuttlecocks for competition use cork cocks and skirts of waterfowl wings, and are precisely designed and manufactured to the specified weight. However, even in the competition shuttlecock manufactured as described above, the air density changes in summer and winter due to the temperature difference, so that the air resistance of the shuttlecock changes and the flight distance changes. For example, using a shuttlecock set at a temperature suitability of 20 ° C. in a gymnasium at 25 ° C. results in jumping about 23 cm too much. Therefore, in order to avoid this problem, for example, 0.1 g
2. Description of the Related Art A plurality of shuttlecocks having different weights or different wing planting angles have been prepared so that those having a predetermined flight distance in a competition can be selected. Shuttlecocks having five to seven different flight distances according to the room temperature are manufactured and sold.

However, preparing a plurality of shuttlecocks having different weights and different wing angles as described above is troublesome and costly for both producers and users. A shuttlecock that can be used has been proposed. (Japanese Patent Laid-Open Publication No. Sho 60-246774) This proposed shuttlecock has a cavity in the cock, in which a box-shaped anchor portion is embedded, and a rectangular groove provided on the upper portion of the anchor portion for adjusting the weight. An element is attached. This element has a substantially inverted T-shape and has a recess or notch in the middle. Then, by inserting the element into the groove of the anchor portion and rotating it by 90 degrees, the element is fixed to the cock. Furthermore, in the shuttlecock of badminton described in Japanese Patent Publication No. 4-25830, a proposal has been made to change the flight characteristics of the shuttlecock by providing a means for changing the shape of the blade that changes the speed of the shuttlecock. In this method, the inside of a cock is made hollow, and a tape of a plastic frame for planting blades is fixed inside the cock so that the direction in which the blades are planted can be changed.

[0004]

However, the weight-adjustable shuttlecock described above has a complicated cock structure and uses a block-shaped element having an inverted T-shape. Was difficult to adjust. In addition, this is mainly for a synthetic resin cock ball having a hollow inside, and is not suitable for a game waterfowl ball. That is, the waterfowl ball for competition uses cork, but if a cavity for mounting the weight adjustment block is provided therein, there is a possibility that the strength of the cork is reduced and the cork cannot withstand use.
In addition, there is a risk that the element and the anchor portion in the cock may be loosened during the competition and the element may jump out and jump into the eyes of the competitor. Next, in the case where the flight distance is changed by changing the mounting angle of the blade, there is also a disadvantage that the cock is hollow and the taste is poor. Further, there is a disadvantage that the plastic frame for wing installation is easily broken. Accordingly, an object of the present invention is to provide a novel shuttlecock set that solves the problem of the conventional weight-adjustable shuttlecock and an adhesive sheet piece for adjusting the weight thereof.

[0005]

A shuttle cock set according to the present invention for solving the above-mentioned problems comprises a cock having a flat sticking surface on an upper surface, a shuttle cock having a skirt fixed to the cock, and a single-sided shuttle cock. A plurality of adhesive sheet pieces for weight adjustment provided with an adhesive layer or a magnetic adsorbent. In a preferred embodiment of the present invention, the above-mentioned adhesive sheet piece having a release sheet attached to the adhesive layer side is used. Furthermore, the sticking sheet piece 2 is a flexible latch magnet or rubber magnet. Further, the adhesive sheet piece 2 made of a first magnetic material is previously attached to the cock upper surface of the shuttlecock 1 to which the skirt portion 4 is fixed, and the second adhesive sheet piece is attached to the adhesive sheet piece 2 by a magnetic force. It is constituted so that it may be detachably adsorbed. Further, it is a weight-adhesive adhesive sheet piece which is adhered to the upper surface of the cock of the shuttlecock 1 to which the skirt portion 4 is fixed, and which has an adhesive layer 7 on one side which can be adhered and peeled off.

[0006]

According to the shuttlecock set of the present invention, the weight of the shuttlecock can be easily and quickly adjusted by simply attaching a predetermined weight of an adhesive sheet piece to the flat attaching surface formed on the upper surface of the cock. it can. Further, the structure of the shuttlecock cock is simple, and it is easy to accurately design the weight of the adhesive sheet piece for weight adjustment. Therefore, it is possible to accurately adjust the adhesive sheet pieces in a plurality of weight stages in minute increments. In addition, the attachment sheet piece can be easily attached to and detached from the cock, and substantially does not peel off during the game. Furthermore, even if the sticking sheet piece is peeled off, it does not pose any danger to the competitor, so that the safety is extremely high.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a perspective view showing an example of a shuttlecock set according to the present invention. The set includes a shuttlecock 1 and an adhesive sheet 2. The shuttlecock 1 includes a cock 3 having a flat surface formed on the upper surface of a substantially spherical body made of cork material, and a skirt portion 4 composed of waterfowl wings fixed around the upper portion of the cock 3. The flat surface of the cock 3 is a sticking surface 5 for sticking the sticking sheet piece 2. It should be noted that the cock 3 and the skirt portion 4 can be fixed by inserting the blade shaft and bonding the same as in the conventional case.

FIG. 2 is a sectional view showing an example of the above-mentioned adhesive sheet piece 2. A circular adhesive sheet piece 2 having a predetermined weight and a diameter and thickness is formed by cutting a flexible sheet such as a polyvinyl chloride sheet into a predetermined shape from a sheet body 6. And an adhesive layer 7 formed on one side thereof. By using the flexible sheet in this manner, the operation of attaching and detaching the cock 3 to and from the attaching surface 5 can be further facilitated. Then, such a sticking sheet piece 2 is stuck on a label in advance as shown in FIG. When it is desired to reduce the weight, the sticky sheet piece 2 may be peeled off by the competitor with his fingernail. Further, in order to further increase the weight, another adhesive sheet piece 2 may be overlapped. It should be noted that the +1 seal shown in FIG. 4 is entirely larger than the label of the sheet piece 2 which is transparent and pre-adhered, except for the character portion, and knows what number the label is superimposed on. The player is notified that the flight distance will be +1 to that number. Each of the adhesive sheet pieces 2 has the adhesive layer 7 side adhered to the release sheet 8, and is peeled off from the release sheet 8 when used, and is adhered to the adhesive surface 5 of the cock 3 as indicated by an arrow in FIG. 1. FIG. 2 shows a state in which one sticking sheet piece 2 is stuck to the peeling sheet 8. However, a plurality of sticking sheet pieces 2 having the same or different weights may be stuck to the same peeling sheet 8. it can. In order to form the adhesive layer 7 on one side of the sheet body 6, for example, an adhesive may be coated to a predetermined thickness by spraying or coating.

In the shuttlecock set of the present invention, one or a plurality of adhesive sheet pieces 2 are prepared. Such adhesive sheet pieces 2 can be combined in the same weight or in different weights. In the case of combining the same weight, a plurality of the minimum weight units, for example, 0.1 g, are prepared, and if necessary, a plurality of them are stacked as shown in FIG. To wear. When different weights are combined, a necessary weight may be selected and used. For example, in order to use a polyvinyl chloride sheet having a specific gravity of 1.4 for the sheet body 6 to make the adhesive sheet piece 2 of 0.1 g, the diameter may be 18 mm and the thickness may be 0.28 mm. In addition, since the pressure-sensitive adhesive layer 7 can be formed to be extremely thin, there is substantially no problem if the weight is not taken into consideration. However, for strict design, the weight of the sheet body 6 may be designed by subtracting the weight in advance. . A product label 9 having a strong adhesive force and negligible weight may be attached to the attaching surface 5 of the cock 3. Further, the adhesive sheet piece 2 is preferably sold in a state of being set with the shuttlecock 1, but is not limited thereto and is sold alone as an adhesive sheet piece for weight adjustment.
It may be attached to an existing shuttlecock.

[0010]

[Modification] Instead of the sticky adhesive sheet piece 2 of the above embodiment, an adhesive sheet piece for adjusting the weight which is magnetically attracted and made of a rubber magnet may be used. In this case, an adhesive layer is provided on one surface of the first magnetic sheet piece, which is adhered to the upper surface of the cock, and the second and subsequent magnetic sheet pieces can be sequentially overlapped. Either the second sheet or the first sheet can be a thin iron plate.

[0011]

According to the shuttlecock set of the present invention constructed as described above, the shuttlecock of the shuttlecock can be mounted and removed simply by attaching and detaching an adhesive sheet piece having a predetermined weight to the flat attaching surface formed on the upper surface of the cock. The weight can be adjusted simply and quickly. Further, the structure of the shuttlecock cock is simple, and it is easy to accurately design the weight of the adhesive sheet piece for weight adjustment. Therefore, adjustment of a plurality of weight steps can be easily performed in minute increments. Further, the attachment sheet piece can be easily attached to and detached from the cock, and substantially no peeling occurs during the game. Even if the sticking sheet is peeled off from the cock, it does not pose any danger to the competitor, so that the safety is extremely high.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a shuttlecock set of the present invention.

FIG. 2 is a sectional view showing an example of an adhesive sheet piece used for the set of FIG. 1;

FIG. 3 is a longitudinal sectional view showing another example of the method of attaching the adhesive sheet pieces in the shuttlecock set of the present invention.

FIG. 4 is a plan view of the adhesive sheet piece of the present invention.

FIG. 5 is an explanatory vertical cross-sectional view showing a state of sticking of the sticking sheet pieces.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shuttlecock 2 Adhesive sheet piece 3 Cock 4 Skirt part 5 Adhering surface 6 Sheet body 7 Adhesive layer 8 Peeling sheet 9 Product label

Claims (5)

(57) [Claims] 1. A cock 3 having a flat sticking surface 5 on an upper surface.
And a shuttle cock 1 having a skirt portion 4 fixed to the cock 3, and a plurality of weights provided on at least one surface thereof with an adhesive layer 7 or a magnetic adsorbent that can be attached and detached to the attaching surface 5. A shuttlecock set comprising: an adhesive sheet piece 2 for adjustment. 2. The shuttlecock set according to claim 1, wherein the release sheet 8 is adhered to the surface of the adhesive layer 7 provided on one side of the adhesive sheet piece 2. 3. The shuttlecock set according to claim 1, wherein the adhesive sheet pieces 2 are flexible latch magnets or rubber magnets. 4. A sticking sheet piece 2 made of a first magnetic material is attached in advance on the cock upper surface of a shuttlecock 1 to which a skirt portion 4 is fixed, and a second sticking is performed on the sticking sheet piece 2. 2. The shuttlecock set according to claim 1, wherein the sheet pieces are detachably attracted by magnetic force. 5. An adhesive sheet piece for weight adjustment, which has an adhesive layer 7 attached to one surface of the shuttlecock 1 to which the skirt portion 4 is fixed, so that the adhesive layer 7 can be attached and peeled off.