JP5638364B2 - Tennis racket grip - Google Patents

Description

  In order to hit an accurate shot in a tennis competition, it is desirable that the player can accurately recognize the surface of the racket and perform a delicate racket operation. Conventionally, a racket grip described in Patent Document 1 is known as a grip structure of a tennis racket that can provide a so-called “surface-exposure” effect in which a player can hit a ball on a surface to be extracted.

FIG. 8 is a cross-sectional view of the racket grip 80 described in Patent Document 1. As shown in FIG.
A racket grip 80 described in Patent Document 1 has an octagonal cross-section base portion 81 made of an epoxy resin composite material or the like, and a side surface 83 other than a pair of opposing side surfaces 82 is formed in a concave shape so that the periphery of the base component 81 is soft. When the player grips the racket grip 80 by covering with the elastic upper part 83, a grip indexing function is provided by a pointed peak-like structure formed between the side surfaces of the base part 81, and the upper part 83 is used to absorb a shock at the time of hitting.

JP 06-063182

However, the racket grip described in the above-mentioned Patent Document 1 covers the entire surface of the grip body with a soft and elastic resin part, and when gripping strongly, the racket surface is indexed by the ridged structure of the base part. You can get an effect, but you can't get it if you hold it lightly. Moreover, since the soft material is arrange | positioned on the grip surface, there exists a problem that a grip will be twisted according to use.
The present invention has been made to solve the above-described conventional problems, and can provide a racket facing effect even when lightly grasped, and can prevent twisting of the grip due to use. The object is to provide a racket grip.

In order to solve the above-mentioned problems, a tennis racket grip according to claim 1 of the present invention is a tennis racket grip in which a grip tape is wound around a main body having a polygonal cross section. On the side surface, a concave curved groove portion along its longitudinal direction is provided, and a gap portion is formed between the grip tape wound around the outer periphery of the main body portion and the groove portion . A taper process is performed from the grip end side to the top side, and the depth of the groove portion is such that the concave R depth on the grip end end side is the deepest and the concave R depth on the top side is the shallowest in the taper processing region. It is characterized by continuously changing from the grip end side to the top side .
Thereby, even if it is a case where a racket is grasped lightly, the corner | angular part of a racket can be recognized and the surface effect of a racket can be acquired easily.
Moreover, the tennis racket grip according to claim 2 of the present invention is the tennis racket grip according to claim 1, wherein the taper treatment is performed from 0.75 / 100 to 1.5 / from the grip end side to the top side. The depth of the groove portion is continuously changed in a range where the upper limit of the shallowest portion is 0.25 mm and the upper limit of the deepest portion is 0.35 mm .

The tennis racket grip according to claim 3 of the present invention is the tennis racket grip according to claim 1 or 2, wherein the groove is formed at a position separated by a predetermined length from a corner of the body. A pair of parallel surfaces that are horizontal to each other are formed between the corner portion of the portion and the groove portion.
Thereby, the pain of the hand by the corner | angular part of a racket can be relieved and the usability | use_condition of a racket can be improved.

Moreover, the tennis racket grip according to claim 4 of the present invention is the tennis racket grip according to any one of claims 1 to 3 , wherein the groove portion is all of the outer side surfaces of the main body unit other than the pair of opposing outer side surfaces. It is formed in the outer surface of.
Thereby, the corner | angular part of a racket can be felt more clearly and the surface effect of a racket can be heightened.

The tennis racket grip according to claim 5 of the present invention is the tennis racket grip according to any one of claims 1 to 4, wherein the main body portion is made of polyurethane having a Shore D hardness of 30 or more.
Thereby, the twist of the grip by use can be prevented.

  According to the tennis grip racket according to the present invention, the concave R-shaped groove portion is provided on the outer surface of the main body portion, and the grip tape is directly wound thereon, so that a gap is provided between the main body portion and the grip tape. Even when the tennis grip racket is lightly gripped, the edge of the grip can be fully felt, so that the player can concentrate on power from the state of holding the racket relatively lightly. Until the moment, you can always hit the ball you want to put out, you can improve the operability of the racket.

  In addition, since a parallel surface is provided on both sides of the edge of the main body together with the concave R-shaped groove, it is possible to reduce the burden on the hand when gripping the grip and to give a good feeling of use. it can.

  Furthermore, by optimizing the material hardness of the grip, twisting of the grip due to use can be prevented.

It is a front view of the tennis racket grip concerning the present invention. It is a front view of the main-body part of the tennis racket grip which concerns on this invention. It is sectional drawing of the main-body part of the tennis racket grip which concerns on this invention. It is sectional drawing of the tennis racket grip which concerns on this invention. It is an expanded sectional view of the main-body part of the tennis racket grip which concerns on this invention. It is the front view which combined the tennis racket grip and racket frame which concern on this invention. It is a front view of the tennis racket grip main-body part by other embodiment. It is sectional drawing of the conventional tennis racket grip.

(Embodiment 1)
1 is a front view of a tennis racket grip 10 (hereinafter referred to as “grip”) according to the first embodiment, FIG. 2 is a front view of a main body portion 11 of the grip 10, and FIG. Each cross-sectional view in the lateral direction is shown.
A grip 10 shown in FIG. 1 has an end cap (not shown) wrapped around an end of a main body 11 made of a hollow columnar member having a substantially octagonal cross section, and a grip tape 20 is wound around the outer side of the main body 11. It is made up of.

As shown in FIG. 3, the cross-sectional shape of the main body 11 is opposed to the three outer surfaces 12 a, 12 b, 12 c that are continuous among the outer surfaces of the main body 11 having an octagonal cross section, and the three outer surfaces, respectively. In each of the three outer surfaces 12d, 12e, and 12f, concave groove-shaped grooves (R grooves 13a to 13f) are formed, and the remaining pair of outer surfaces 14a and 14b are connected to a straight surface perpendicular to the racket surface. It is a thing.

As shown in FIG. 2, the main body 11 has a region S excluding a certain range of the grip end side end where the end cap is wrapped and the top end of the racket frame side, from the grip end side to the top side. A taper of about 0.75 / 100 to 1.5 / 100 is applied, and the R grooves 13a to 13f are applied over the entire taper region S.

Here, specific shapes of the R grooves 13a to 13f will be described with reference to FIGS. 4 shows a cross section in the lateral direction of the grip 10, and FIG. 5 shows an enlarged cross section in the lateral direction of the main body 11.
As shown in FIG. 4, when the grip tape 20 is wound around the main body 11, a gap 15 is formed between the R grooves 13 a to 13 f and the grip tape 20, and the player holds the grip 10 by the gap 15. The corners of the grip surface can be emphasized.
This effect (edge effect) of enhancing the corners of the grip greatly contributes to the face-up effect on the player. If the depth of the recess R is too shallow, the gap 15 between the main body 11 and the grip tape 20 is obtained. Becomes smaller and the edge effect becomes weaker. On the other hand, if the depth of the concave R is too deep, the corners are excessively emphasized when the grip 10 is gripped, and the burden on the hand increases. In view of the above, the depth D of the R grooves 13a to 13f, that is, the distance from the apex portion of the concave R to the imaginary plane of the outer surfaces 12a to 12f (see FIG. 5) is 0.25 mm to 0.35 mm. Is preferred.

  Further, as shown in FIG. 5, the R grooves 13 a to 13 f of the outer surfaces 12 a to 12 f are formed from a position that is a predetermined length from the edge 16 of the grip 10, and the edges 16 of the outer surfaces 12 a to 12 f. Parallel portions 17 are formed on both sides. That is, the outer surfaces 12a to 12f are configured by R grooves 13a to 13f and a pair of parallel portions 17 formed continuously at both ends of the R grooves 13a to 13f.

The parallel portion 17 is provided to prevent the hand from feeling pain due to the edge 16 standing too much when the player grasps the grip 10, and the width W is set to about 1 mm to 2 mm from the edge 16. Is preferred. In the case of 1 mm or less, the edge effect is emphasized and the burden on the hand is increased. On the other hand, in the case of 2 mm or more, the edge effect is reduced and the surface effect by forming the R grooves 13a to 13f is obtained. It is because it becomes impossible.

The R grooves 13a to 13f formed as described above may have a uniform depth in the longitudinal direction of the outer surfaces 12a to 12f. Alternatively, in the case of a grip type having a taper as shown in FIG. The depth may be continuously changed so that the end-side concave R depth is the deepest and the top-side concave R is the shallowest. Thus, by changing the depth of the R grooves 13a to 13f continuously in accordance with the taper of the grip 10, it is possible to eliminate the uncomfortable feeling when gripping the grip.

In the first embodiment, the main body portion 11 having the above structure can be produced by injection molding of a polyurethane foam resin. For example, by placing a mold around the frame of the tennis racket and injecting a polyurethane resin to which a foaming agent is added, the main body 11 is formed on the frame 30 of the tennis racket main body as shown in FIG. Can do.

The hardness of the body 11 after molding is preferably 30 or more in Shore D hardness, and more preferably 37 to 52 in consideration of variations in the production of polyurethane. This is because if the Shore D hardness is 30 or less, it is too soft, so the grip is easily deformed by use, and if the Shore D hardness is 55 or more, it is too hard and is inferior in impact absorption at the time of impact. Is by becoming.

  The grip 10 according to the first embodiment is configured as described above. R grooves 13 a to 13 f are provided on the outer surface of the main body 11, and the grip tape 20 is directly wound around the main body 11. Since the gap 15 is provided between the grip tape 20 and the grip 10, the edge 16 of the grip 10 can be sufficiently felt even when the grip 10 is lightly gripped. From the moment to the moment of impact, it is possible to hit the ball on the surface you want to put out.

  Further, since the main body 10 has a Shore D hardness of 30 or more, the deformation of the grip due to the use of the racket can be suppressed.

  As in the grip 10 of the first embodiment, the R grooves 13a to 13f are not formed on all surfaces other than the straight surfaces 14a and 14b, but only on any surface other than the straight surfaces 14a and 14b. Or you may form only in the selected several surface. That is, by providing the straight surfaces 14a and 14b as a reference for gripping the grip 10 by the player and at least one R groove 13a to 13f for providing an angle that serves as an index for the racket surface, the player can adjust the grip edge. The surface of the racket can be recognized through the straight surface, and the surface-developing effect can be realized like the grip 10 of the first embodiment.

Further, in the first embodiment, the taper type grip 10 has been described, but also in the straight type grip 70 as shown in FIG. 7, the R grooves 13 a to 13 f and parallel to each surface other than the pair of parallel surfaces. By forming the portion 17, the same effect as the grip 10 of the first embodiment can be obtained. In this case, the depth of the R grooves 13a to 13f is set to a constant depth from the grip end to the top side, so that a sense of incongruity when the grip is gripped can be suppressed.

(Example)
Examples of the present invention and comparative examples to be compared with the examples are shown below. Here, the two types of tennis rackets according to the embodiment of the present invention and the three types of tennis rackets according to the comparative example are compared. Table 1 below shows the grip of each tennis racket and the specifications of the racket.

実施例１ないし比較例３は、主に、グリップのＲ溝１３ａ〜１３ｆの有無、Ｒ溝１３ａ〜１３ｆの深さ、及びエッジ部の形状について差異を与えている。具体的には、実施例１，２、及び比較例１は、グリップにＲ溝１３ａ〜１３ｆを設け、Ｒ溝１３ａ〜１３ｆの深さをそれぞれのグリップにおいて異ならせている。なお、いずれのグリップにおいても、平行部１７は同一幅（１ｍｍ）としている。また、比較例２，３は、いずれもグリップにＲ溝１３ａ〜１３ｆを設けず、比較例２はグリップの各面間にエッジを与えたもの、また比較例３はグリップの各面間のエッジを丸めたものである。なお、ラケットの全長、バランス、モーメントなど、グリップ以外の要素については、全てのラケットにおいて略同じになるよう調整している。

Example 1 thru | or Comparative Example 3 mainly gives the difference regarding the presence or absence of the R grooves 13a to 13f of the grip, the depth of the R grooves 13a to 13f, and the shape of the edge portion. Specifically, in Examples 1 and 2 and Comparative Example 1, the grips are provided with R grooves 13a to 13f, and the depths of the R grooves 13a to 13f are different in each grip. In any grip, the parallel portion 17 has the same width (1 mm). In Comparative Examples 2 and 3, neither R grooves 13a to 13f are provided in the grip, Comparative Example 2 is provided with an edge between each face of the grip, and Comparative Example 3 is an edge between each face of the grip. Is rounded. It should be noted that elements other than the grip, such as the overall length, balance, and moment of the racket, are adjusted so as to be substantially the same for all rackets.

An actual hit test was performed using the tennis rackets according to the examples and comparative examples configured as described above. In the actual hit test, a plurality of (25 players) middle / advanced players (universities and members of society) are actually subjected to hitting practice using the rackets of Examples 1 and 2 and Comparative Examples 1 to 3. In this case, evaluation of the grip usage feeling experienced by the player, such as “Do you understand the surface”, “Can you grip lightly”, etc., is performed. In addition, the evaluation in the volley and the low volley was evaluated separately.
Table 2 below shows the results of the overall evaluation of the actual hit test, and Table 3 shows the results of evaluation with a volley and a low volley.

  As is clear from Table 2, for Example 1, good evaluation was obtained for all items. In particular, the evaluation of “I understand the face”, “Relax” and “Grip lightly” is high, and it is evaluated that it is easy to operate the racket. You can see that it is getting higher.

  On the other hand, in Comparative Examples 1 to 3, some of the individual items obtained a good evaluation, but in the case of “I understand the surface” and “I can grasp it lightly”, the result is equal to or lower than the evaluation of the example. It has become.

  Further, in the evaluation of the volley and the low volley shown in Table 3, Comparative Example 1 in which the depths of the R grooves 13a to 13f were the deepest had the highest evaluation of “I understand the surface”, and thereby the surface wasted by the R grooves 13a to 13f. Although it turns out that an effect is fully acquired, the evaluation of "a grip is not painful" is low as comprehensive evaluation, and it is inferior to the Example as a comprehensive evaluation of a tennis racket.

  As is clear from the above, according to the grip of the present invention, the surface-expanding effect can be sufficiently achieved and a good feeling of use can be obtained.

  According to the tennis racket grip according to the present invention, even in a relaxed state in which the grip is lightly gripped, it is possible to provide a tennis racket that can sufficiently feel the surface effect of the racket and is excellent in operability. Useful.

DESCRIPTION OF SYMBOLS 10 Tennis racket grip 11,70 Main-body part 12a-12f Outer side surface 13a-13b R groove | channel 14a, b Straight surface 15 Crevice 16 Edge 17 Parallel part 20 Grip tape 30 Frame part 80 Racket grip 81 Base part 82, 83 A pair of side surface

Claims (5)

In the tennis racket grip formed by winding a grip tape around the polygonal section of the main body,
At least one outer surface of the main body is provided with a concave curved groove along its longitudinal direction,
A gap is formed between the grip tape wound around the outer periphery of the main body and the groove ,
The main body is tapered from the grip end side to the top side,
The depth of the groove portion continuously changes from the grip end side to the top side so that the concave R depth on the grip end end side is the deepest and the concave R depth on the top side is the shallowest in the taper processing region.
A tennis racket grip characterized by that. The tennis racket grip according to claim 1,
The taper treatment is performed in the range of 0.75 / 100 to 1.5 / 100 from the grip end side to the top side,
The depth of the groove portion continuously changes in a range where the upper limit of the shallowest portion is 0.25 mm and the upper limit of the deepest portion is 0.35 mm.
A tennis racket grip characterized by that. The tennis racket grip according to claim 1 or 2 ,
The groove is formed at a position that is a predetermined distance away from the corner of the main body, and a pair of horizontal parallel surfaces is formed between the corner of the main body and the groove.
A tennis racket grip characterized by that. In the tennis racket grip according to any one of claims 1 to 3 ,
The groove portion is formed on all outer surfaces of the outer surface of the main body portion other than a pair of opposed outer surfaces.
A tennis racket grip characterized by that. The tennis racket grip according to any one of claims 1 to 4,
The main body portion is made of polyurethane having a Shore D hardness of 30 or more.
A tennis racket grip characterized by that.

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