JP2008220485A - Weight balance adjusting member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weight balance adjusting member used when adjusting weight balance or adjusting a so-called sweet spot by being stuck to a racket used in table tennis, tennis or badminton or the like, a bat used in baseball or softball, or a golf club or the like, or when adjusting the weight balance or the like by being stuck to shoes or the like, capable of paying attention to environmental preservation and easily adjusting the weight balance. <P>SOLUTION: The weight balance adjusting member is composed of a weight material in the shape of a strip of a prescribed length and is provided with an adhesive layer on one surface of the weight material. A tin material is used for the weight material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is attached to a racket used in table tennis, tennis, badminton, etc., a bat used in baseball, softball, a golf club, etc., to adjust the weight balance, adjust the so-called sweet spot, or The present invention relates to a weight balance adjusting member that is used when a weight balance is adjusted by being attached to shoes or the like.

  A racket used in table tennis, tennis, badminton, etc., or a ball hitting tool such as a golf club or baseball bat, when the center of gravity position is near the tip opposite to the grip of the ball hitting tool, a powerful hit ball using centrifugal force However, on the other hand, the swing speed is lowered, the operability is deteriorated, and the player is easily fatigued.

  On the other hand, when the position of the center of gravity is closer to the grip, on the contrary, although the power of the hit ball is reduced, there is an advantage that it is excellent in operability and hardly fatigues.

  Therefore, it is necessary to select a ball hitting tool that has an optimal weight balance according to the player's individual ability and preference, and various types of ball hitting tools are provided in shape, size, and center of gravity. ing.

  However, each player's abilities and preferences vary greatly, and it is difficult to provide a hitting tool that meets the needs of each player, except for one made for each player.

  In order to meet the demands of each player, for example, a racket frame has been proposed that can adjust the weight balance by changing the position of the center of gravity (see, for example, Patent Document 1).

  In this racket frame, a part of the weight balance lead is integrally formed inside the grip, and the lead to be retrofitted can be placed at a desired position in the groove provided in the grip to adjust the weight balance It is possible.

  Also, as shown in FIG. 5, in order to adapt the weight balance of the racket to the individual needs of the player, affixing a lead-containing adhesive tape has been proposed. As shown in the cross-sectional view of FIG. 5 (b), this lead-containing pressure-sensitive adhesive tape 100 has a pressure-sensitive adhesive layer 102 for attaching to a racket on one surface of a lead plate piece 101 and a separator (release paper) for protecting the same. 103, and the other surface of the lead plate piece 101 is provided with a printing ink layer 105, an adhesive layer 106, and a transparent tape 107.

By cutting the lead-containing adhesive tape 100 into a predetermined length, for example, as shown in FIG. Are attached to the end of the grip 110 (100c in the figure) to meet the player's individual weight balance requirements.
Japanese Patent Laid-Open No. 10-57530

  The weight balance adjustment of the racket frame and the lead-containing adhesive tape of Patent Document 1 is determined by the amount and arrangement of lead, but in recent years, regulations on the use of lead are severe in terms of protecting the global environment and human body. It has become.

  Lead is suitable as a weight balance weight because it has a higher specific gravity than iron and is easy to process and cheap as a member for weight balance. However, if it accumulates more than a predetermined amount in the body, it leads to lead poisoning. Moreover, since it is said that environmental pollution is caused by disposal, future use is expected to be difficult due to disposal of material waste in the manufacturing process, human contact during use, and problems during disposal.

  In addition, the lead material is easily oxidized in the air, and changes color to black due to the oxidation. If it is left as it is, there is no commercial value. Therefore, it is necessary to devise coloring such as printing. Furthermore, in order to prevent the lead material from being exposed due to the stripping of the colored layer due to impact or the like, it is necessary to affix a transparent tape on the colored layer to block contact with the air, resulting in an increase in the cost of the product. .

  In view of the above, the present invention can be applied to rackets used in table tennis, tennis, badminton, etc., bats used in baseball, softball, golf clubs, etc. to adjust the weight balance, It is a weight balance adjustment member that is used when making adjustments or attaching to shoes, etc. to adjust the weight balance, etc., and can be easily adjusted in consideration of environmental conservation. The object is to provide a weight balance adjusting member.

  In order to achieve the above object, the present invention proposes a weight balance adjusting member comprising a weight plate-shaped weight material having a predetermined length, and having an adhesive layer on one surface of the weight material, A tin material is used as the material.

  The weight of the weight for adjusting the weight balance is such that the weight balance can be changed with a small volume, so the specific gravity is better, and it is flexible enough to fit the curved shape of racket frame, golf club, bat, shoes, etc. It is required to be easily deformed.

  Conventionally, lead and lead alloys having a specific gravity of 11.4 have been used to satisfy such requirements, but other alternatives have been required to be examined due to demands for safety and environmental protection for the human body.

  In the present invention, a tin material having high safety, relatively large specific gravity, and excellent workability is used as a substitute for lead or lead alloy used in the weight material. Tin has a specific gravity of 7.4, and can be sufficiently used in place of conventional lead in order to adjust the weight balance with a small volume.

  A conventional weight balance adjusting member using lead needs to have an adhesive transparent film or the like attached to the surface in order to prevent lead from being exposed due to peeling of the ink. The presence of such a transparent adhesive film has inevitably led to an increase in the cost of the weight balance adjusting member as a product.

  According to the present invention, since the tin material does not adversely affect the human body, even if the ink is applied to the surface of the tin material and the tin material is peeled off and the tin material is exposed, the human body is not adversely affected. Therefore, there is no need to attach an adhesive transparent film to the surface, and cost reduction can be achieved.

  Further, in the conventional weight balance adjusting member using lead, the surface of lead is oxidized and discolored, so that the lead surface needs to be colored with colored ink in order to avoid a decrease in commercial value. On the other hand, the tin material is not easily oxidized at room temperature and maintains a metallic luster, so there is no need to color the surface with colored ink, and in this respect, the cost can be reduced.

  Furthermore, in the conventional weight balance adjusting member using lead, since the metal background is exposed at the edge portion (cut portion), there is a risk of contact with lead having a safety problem for the human body when used. Furthermore, when manufacturing a weight balance adjusting member using lead as a product, it is necessary to devise measures such as eliminating contact with a lead material harmful to the human body, leading to an increase in manufacturing cost.

  In the case of tin, which is a metal that is harmless to the human body, all such problems can be solved.

  In addition, in the case of the conventional weight balance adjusting member using lead, it is necessary to pay attention to the treatment of material waste (lead waste) generated in the manufacturing process. In this respect, the cost must be increased. In the case of the weight balance adjusting member using the tin material of the invention, such a problem can be solved.

  In addition, tin is easy to process and handle, so it can be easily cut to the length necessary for weight balance adjustment, and is applied to the curved shape of racket frames, golf clubs, bats, shoes, etc. It is easy to wear.

  In the weight balance adjusting member of the present invention, an ink layer for printing can be provided on the surface of the weight member opposite to the pressure-sensitive adhesive layer.

  Tin material does not cause large discoloration like lead even in the air and can maintain its gloss, but the decorative value can be increased by printing the surface with ink or the like.

  In the weight balance adjusting member of the present invention, the weight member may be provided with a plurality of grooves in the width direction of at least one surface. By providing a plurality of grooves in the width direction, cutting is facilitated along the grooves.

  Providing the grooves in the width direction at a fine pitch makes it easier to fine-tune the weight.

  In the weight balance adjusting member of the present invention, the belt-like weight member may be wound in a longitudinal direction perpendicular to the width direction.

  Since the tin material has flexibility, a relatively long material can be wound for convenience of handling. And when using as a weight balance adjustment member, it can draw out from a winding state, can cut | disconnect to a required length, and can affix on a hitting tool.

  Further, the weight member may be a strip piece having a predetermined length, and this strip piece may be further cut at the time of use.

  According to the present invention, tin is used instead of lead as a weight material, and therefore a weight balance adjusting member can be provided in consideration of safety to the human body and environmental conservation.

  In addition, the weight material is in the form of a strip, making it easy to make it the desired length. This is used for table tennis, tennis, badminton, racquets, baseball, softball bats, golf clubs, and shoes. The weight balance can be adjusted, or the so-called sweet spot can be finely adjusted.

  Hereinafter, examples of the best mode of the present invention will be described with reference to the accompanying drawings.

  1A is a cross-sectional view illustrating an example of the weight balance adjusting member of the present invention, FIG. 1B is a perspective view illustrating an example of the weight balance adjusting member of the present invention, and FIG. 1C is the present invention. It is a perspective view explaining the state which wound the weight balance adjustment member.

  As shown in FIG. 1 (b), the weight balance adjusting member 11 has a predetermined width 21, extends in a longitudinal direction perpendicular to the width direction with a predetermined length 22, and is 0.1 m / m. It is provided with a tin material 12 formed in a strip shape having a predetermined thickness of about 2.0 m / m.

  The predetermined width 21 and the predetermined length 22 are the racket used for table tennis, tennis, badminton, etc., the bat used for baseball, softball, golf clubs, shoes, etc., and the weight balance adjusting member 11 of the present invention. It can be variously changed depending on the size of the member to be attached.

  In addition, since the tin material is easy to process such as cutting, it is made to have a uniform size such as a width of 10 mm and a length of 100 mm, and cut into a predetermined width and length as necessary. You can also

  As shown in FIG. 1A, one surface of the tin 12 is attached to a racket used for table tennis, tennis, badminton, etc., a bat used for baseball, softball, a golf club, shoes, etc. A pressure-sensitive adhesive layer 13 is provided.

  In the illustrated embodiment, the pressure-sensitive adhesive layer 13 is covered with a separator 15 that is a release paper.

  In the illustrated embodiment, an ink layer 16 for printing and coloring the surface of the tin material 12 is formed on the other surface of the tin material 12 (the upper surface in FIG. 1A).

  Tin is a stable metal that does not easily oxidize at room temperature and does not produce an oxide film even when placed in the air, maintains its metallic luster, and does not discolor due to the effects of atmospheric oxygen like lead. . Therefore, it is not necessary to color or cover the surface with transparent tape like lead, but the surface of the tin material 12 is printed and colored from a decorative point.

  As shown in FIG. 1B, the weight balance adjusting member 11 can be a tape-shaped member extending in the longitudinal direction by a predetermined length 22. This tape of the predetermined length 22 is cut to a required length with a heel 25 and used for table tennis, tennis, badminton, etc., bats used for baseball, softball, golf clubs, shoes, etc. The weight balance is adjusted by sticking to the surface.

  In the illustrated embodiment, the weight balance adjusting member 11 is a strip-shaped member having a predetermined length as shown in FIG. 1 (b), and this is used by appropriately cutting with a scissors 25 as necessary. What was wound in roll shape like FIG.1 (c) may be cut into the required length with the scissors 25, and may be used.

  If it is wound in a roll shape, the weight balance adjusting member 11 having a sufficient length can be efficiently prepared and stored.

  In the conventional weight balance adjustment member using lead material, the lead material surface is covered with transparent tape to prevent exposure of harmful lead to the human body. There is a problem that lead is exposed on the surface.

  However, in the weight balance adjusting member 11 of the present invention formed of the tin material 12 shown in FIG. 1A, exposure is not a problem because the tin material is safer than lead.

  2A is a front view of a state in which a weight balance adjusting member is attached to a table tennis racket, and FIG. 2B is a front view of a state in which the weight balance adjusting member 11 is attached to a tennis racket.

  As shown in FIG. 2A, for example, the weight balance adjusting members 11a and 11b are affixed symmetrically on the tip side surface 33 of the ball striking surface 32 of the table tennis racket 31. At the time of sticking, the separator 15 is peeled off from the weight balance adjusting members 11a and 11b, and the pressure-sensitive adhesive layer 13 is stuck to the tip side surface of the hitting surface of the table tennis racket 31 for sticking.

  The reason why the weight balance adjusting member is attached to the tip side of the hitting surface 32 is to increase the moment of inertia by moving the position of the center of gravity to the tip side and improve the power of the hit ball. In addition, the weight balance adjusting member is disposed at the symmetrical position in consideration of the stability of the racket swing.

  Also, the weight balance adjusting member 11c can be attached to the end of the grip 35 of the table tennis racket 31, and in this case, the operability of the table tennis racket 31 can be improved by moving the center of gravity to the grip 35 side. Is.

  FIG. 2B shows a case where a weight balance adjusting member is attached to the tennis racket 36. As shown in FIG. 2B, the weight balance adjusting members 11d and 11e are attached to the left and right symmetrical positions of the frame 38 of the hitting surface of the tennis racket 36 to increase the moment of inertia and enable powerful hitting. It will be.

  Further, the operability of the tennis racket 36 is improved by attaching the weight balance adjusting member 11f to the base end of the grip 39 of the tennis racket 36.

  Thus, since the weight balance adjusting member of the present embodiment uses tin as the weight material, the weight balance adjusting member is higher in safety to the human body than the conventional lead weight material. Yes, and in consideration of environmental conservation.

  When lead material is used, the surface of the lead material is covered with a transparent tape to prevent the exposure of the lead due to the peeling of the ink printed on the surface of the lead material. Since there is no problem, it is not necessary to cover with a transparent tape or the like, and the cost can be reduced.

  The weight balance adjustment member is cut to the required length and attached to a racket, etc., but the conventional lead material uses a tin material, but there is a problem that lead is exposed on the cut surface and touches the human body. Then, even if it is exposed, there is no problem in terms of safety.

  In addition, there is a problem of environmental pollution when using conventional lead materials, such as material waste in the manufacturing process and disposal after use. However, in this embodiment using tin materials, there is a problem of environmental pollution such as lead materials. Does not occur.

  Furthermore, in the manufacturing process, when conventional lead materials are used, safety measures from lead materials, such as not touching the lead materials, are necessary, reducing work efficiency, but this is the case when using tin materials. No problem occurs.

  The weight balance adjusting member in this embodiment is not limited to table tennis, tennis, and badminton rackets, but is used as a weight balance adjusting member for hitting tools such as golf clubs and baseball bats, and a weight balance adjusting member for shoes, etc. be able to.

  Next, Embodiment 2 will be described with reference to FIG.

  3A and 3B are views showing another embodiment of the weight balance adjusting member, wherein FIG. 3A is a perspective view thereof, and FIG. 3B is a sectional view thereof.

  In FIG. 3, the same components as those in the first embodiment of FIGS. 1 and 2 are given the same names and the same reference numerals, and descriptions thereof are omitted.

  The weight balance adjusting member 14 of the second embodiment is different from the first embodiment in that a tin material as a weight material and a groove 34 having a V-shaped cross section are provided at a predetermined pitch in the width direction on the ink surface printed on the surface. It is.

  The groove 34 in the width direction of the weight balance adjusting member 14 is a direction orthogonal to the longitudinal direction. The reason why such a groove 34 is provided is that the weight balance adjusting member 14 is cut and used in the middle thereof. The groove 34 facilitates cutting.

  Therefore, it is desirable to provide a plurality of grooves 34 with a depth for facilitating cutting and from one end to the other end in the width direction, and with a finer pitch.

  The groove 34 has a V-shaped cross section in the present embodiment, but is not limited to this and may be a concave groove.

  The weight adjustment balance adjustment member 14 of the present embodiment may be a predetermined length extending in the lateral direction, cut into a required length and attached to a racket or the like, or wound in a roll shape Then, it may be cut by pulling out only the required length.

  Next, Embodiment 3 will be described with reference to FIG.

  4A and 4B are views showing still another embodiment of the weight balance adjusting member, wherein FIG. 4A is a perspective view thereof, and FIG. 4B is a sectional view thereof.

  In FIG. 4, the same components as those in the first embodiment of FIGS. 1 and 2 are denoted by the same names and the same reference numerals, and the description thereof is omitted.

  The weight balance adjusting member 24 of the third embodiment is different from the first embodiment in that a tin material as a weight material and an ink surface printed on the surface thereof are provided with a groove 34 having a V-shaped cross section in the width direction. The difference from the second embodiment is that the grooves 34 are continuously provided.

  By providing the groove 34 continuously, it is easier to cut the weight balance adjusting member 24 to a predetermined length. This makes it easier to obtain a length corresponding to the fine adjustment of the weight balance.

  The groove 34 has a V-shaped cross section in this embodiment, but is not limited to this and may be a concave groove.

  Further, the weight adjusting balance adjusting member 24 of the present embodiment may be cut to a required length with a predetermined length extending in the lateral direction and attached to a racket or the like, or wound in a roll shape. It may be cut out by pulling out the required length.

(A) is sectional drawing of a weight balance adjustment member, (b) is a perspective view of a weight balance adjustment member, (c) is a perspective view of the state which wound the weight balance adjustment member. (A) is a front view of the state which stuck the weight balance adjustment member to the table tennis racket, (b) is the front view of the state which stuck the weight balance adjustment member to the tennis racket. (A) is a perspective view which shows the other Example of a weight balance adjustment member, (b) is the sectional drawing. (A) is a perspective view which shows further another Example of a weight balance adjustment member, (b) is the sectional drawing. (A) is the front view which stuck the conventional weight balance adjustment member to the table tennis racket, (b) is the one part detail drawing.

Explanation of symbols

11, 14, 24 Weight balance adjusting member 12 Tin material 13 Adhesive layer 15 Separator (release paper)
16 Ink layer 34 Groove

Claims (2)

A weight balance adjusting member comprising a belt-like weight material of a predetermined length, and having an adhesive layer on one surface of the weight material,
A weight balance adjusting member using a tin material as the weight material.   The weight balance adjusting member for a ball striking tool according to claim 1, wherein an ink layer for printing is provided on a surface of the weight member opposite to the adhesive layer.

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