JP7450999B1 - Shakehand table tennis racket and its mounting parts - Google Patents

Abstract

The present invention provides a technology that can appropriately assist a user in holding a shake-hand type table tennis racket. [Solution] A shake-hand type table tennis racket has a flat main body plate having a plate surface including a rubber region covered by rubber and an extension region extending from the rubber region to the rear end side. a rod-shaped grip part that is held by a user and is connected to the main body plate part with the tip part entering the extension area; and a rod-shaped grip part that is provided adjacent to the tip part of the grip part in the extension area an increased thickness that protrudes beyond the rubber region in the thickness direction and forms a step adjacent to an end surface of the rubber that covers the rubber region; and at least one of the protrusions on which the user's thumb rests. [Selection diagram] Figure 1

Description

The present disclosure relates to a shake-hand table tennis racket and its attachment parts.

Generally, table tennis rackets are broadly classified into penholder type and shakehand type. A penholder-type racket has a structure suitable for holding the racket with your fingers on the grip, like when holding a pen, and a shake-hand racket has a structure suitable for holding the racket with the grip like shaking hands. are doing.

Whether you use the pen holder style or the shake hand style, it is important to hold the racket in the correct way in order to improve your basic table tennis skills. Therefore, various techniques have been proposed to assist the user in holding a table tennis racket. For example, in Patent Document 1 listed below, in order to enable the user to hold a penholder-type racket more stably and strongly, the blade of the racket has a protruding part that functions as a support for the fingertips. A technique for forming a is disclosed.

Special Publication No. 2023-505618

As explained in Patent Document 1 above, shakehand type rackets allow the rod-shaped grip to be gripped strongly with multiple fingers, so they generally hold the racket in a more stable state than penholder type rackets. There is a perception that it is easy to hold and easy to use even for beginners. For this reason, until now, sufficient efforts have not been made to assist in gripping shake-hand rackets.

However, while instructing table tennis players, the inventor of the present invention found that in the shake-hand style, force is easily applied to the hand holding the racket during play, and the position of the fingers placed on the racket is also likely to change. Therefore, they found that it affected the player's play and physical fatigue. The technology of the present disclosure is based on unique knowledge obtained in the field of such instruction, and provides a technology that can more appropriately assist the user in holding a shake-hand table tennis racket. The task is to

The technology of the present disclosure can be realized as the following form.

[First form] The first form is provided as a shake-hand type table tennis racket. The table tennis racket of the first form includes a flat main body plate portion having a plate surface including a rubber region covered with rubber, an extension region extending from the rubber region toward the rear end side, and a distal end portion. a rod-shaped grip part that is gripped by the user and is connected to the main body plate part in a state where the rubber part is inserted into the extension area; and an increased thickness portion that protrudes beyond the region in the thickness direction and forms a step adjacent to an end surface of the rubber that covers the rubber region.
According to the shake-hand type table tennis racket of the first embodiment, the thickened portion can suppress the formation of a step on the end surface of the rubber on the plate surface of the main body plate portion. Therefore, the occurrence of a gap between the racket and the user's hand is suppressed, and the user can hold the racket in a more stable state. Therefore, the user is prevented from consciously or unconsciously applying unnecessary force to the hand holding the racket during play, and unnecessary load is not applied to the muscles of the user's arm during play. is suppressed. By eliminating unnecessary force from being applied to the arm, the user can move the arm more flexibly and improve the accuracy of play. Furthermore, it is possible to reduce the fatigue that remains in the user's arms, shoulders, etc. after playing.

[Second Embodiment] In the table tennis racket according to the first embodiment, when the user holds the plate in a shake-hand style, the user's thumb When the surface on which the index finger of the user is placed is the first surface and the surface where the index finger of the user is placed is the second surface, the thickened portion is at least under the thumb of the user on the first surface. A first surface thickened portion may be disposed.
According to the table tennis racket of the second form, the first surface thickened portion can suppress the formation of a step on the end surface of the rubber under the thumb, and can prevent the formation of a gap between the thumb and the first surface. It can be suppressed. Therefore, the user can be prevented from putting too much force on the thumb or moving the thumb while playing. Therefore, the precision of the user's play can be further improved. Furthermore, fatigue remaining in the user's arms, shoulders, etc. after playing can be further reduced.

[Third Embodiment] In the table tennis racket according to the first embodiment or the second embodiment, when the user holds the table tennis racket in a shake-hand style, the When the surface on which the user's thumb is placed is the first surface and the surface where the user's index finger is placed is the second surface, the thickened portion is located below the base of the index finger on the second surface. A second surface thickened portion may be disposed.
According to the third aspect of the table tennis racket, the second surface thickened portion can suppress the formation of a step in the end surface of the rubber under the base of the index finger, and a gap is created between the index finger and the second surface. can be suppressed. Therefore, the user can be prevented from putting too much force on the index finger or moving the position of the index finger during play. Therefore, the accuracy of the user's play can be further improved. Furthermore, the fatigue that remains in the user's arms, shoulders, etc. after playing can be further reduced. If both the first thickened part and the second thickened part are provided, the occurrence of a gap between the racket and the user's hand will be further suppressed, allowing the user to maintain a more stable state. Be able to hold a racket. Therefore, even higher effects can be obtained.

[Fourth form] The table tennis racket according to any one of the first form, the second form, and the third form is such that when the user holds the table tennis racket in a shake-hand style, the user's thumb A convex portion on which the grip may be hung may be provided at the tip of the grip portion.
According to the table tennis racket of the fourth form, since the convex portion functions as a positioning portion for the thumb, the user can easily hold the racket in a more appropriate way when playing. In addition, the convex portion prevents the user from bending the thumb away from the rubber during play, which prevents the thumb from being placed in an inappropriate position on the racket and reducing the ability to control the racket. It can be suppressed.

[Fifth form] The fifth form is provided as a shake-hand type table tennis racket. The table tennis racket of the fifth embodiment includes a flat main body plate portion having a plate surface including a rubber region covered with rubber, an extension region extending from the rubber region toward the rear end side, and a distal end portion. a rod-shaped grip part that is connected to the main body plate part in a state where the rod enters the extension area, and is provided at the tip of the grip part, and the rod-shaped grip part is provided at the tip of the grip part, and the rod-shaped grip part is connected to the main body plate part in a state in which the and a convex portion on which the user's thumb rests when turned upside down.
According to the table tennis racket of the fifth embodiment, since the convex portion functions as a positioning portion for the thumb, the user can easily hold the racket in a more appropriate way when playing. In addition, the convex portion prevents the user from bending the thumb away from the rubber during play, which prevents the thumb from being placed in an inappropriate position on the racket and reducing the ability to control the racket. It can be suppressed.

[Sixth Embodiment] The sixth embodiment is provided as an attachment part that can be attached to a shake-hand type table tennis racket. The table tennis racket includes a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending toward a rear end side from the rubber region. and a rod-shaped grip part that is held by a user and is connected to the main body plate part in a state where the tip part enters the extension area. The attachment component of the fifth form has an increased thickness portion that is disposed adjacent to the tip of the gripping portion in the extension region and forms a step adjacent to an end surface of the rubber that covers the rubber region.
According to the attachment component of the sixth embodiment, it is possible to easily provide the racket with an increased thickness portion that increases the thickness of the extending region. If the shake-hand type table tennis racket is provided with the thickened portion, it is possible to suppress the formation of a step on the end surface of the rubber on the plate surface of the main body plate portion. Therefore, the occurrence of a gap between the racket and the user's hand is suppressed, and the user can hold the racket in a more stable state. Therefore, the user is prevented from consciously or unconsciously applying unnecessary force to the hand holding the racket during play, and unnecessary load is not applied to the muscles of the user's arm during play. is suppressed. By eliminating unnecessary force from being applied to the arm, the user can move the arm more flexibly and improve the accuracy of play. Furthermore, it is possible to reduce the fatigue that remains in the user's arms and shoulders after playing.

[Seventh form] In the attachment part of the sixth form, the surface of the plate surface of the main body plate portion where the thumb of the user is placed when the user holds it in a shake hand style. is a first surface, and a surface on which the index finger of the user is arranged is a second surface, the thickened portion is at least a first surface disposed under the thumb of the user on the first surface. It may include a surface thickening.
According to the attachment component of the seventh embodiment, the first surface thickened portion can be easily provided on the first surface side. If the first surface thickening part is provided on the first surface side of the racket, it is possible to prevent a step from forming on the end surface of the rubber under the thumb, and to prevent a gap from forming between the thumb and the first surface. can be suppressed. Therefore, it is possible to prevent the user from putting too much force on the thumb or moving the thumb while playing. Therefore, the accuracy of the user's play can be further improved. Furthermore, the fatigue that remains in the user's arms, shoulders, etc. after playing can be further reduced.

[Eighth Embodiment] In the attachment part according to the sixth embodiment or the seventh embodiment, when the user holds the plate part in a shake-hand style, the use of the plate surface of the main body plate part When the surface on which the user's thumb is placed is the first surface and the surface where the user's index finger is placed is the second surface, the thickened portion is located below the base of the index finger on the second surface. A second surface thickened portion may be disposed.
According to the attachment part of the eighth embodiment, the second surface thickened portion can be easily provided on the second surface side of the racket. If the racket is provided with the second surface thickening part, it is possible to suppress the formation of a step on the end surface of the rubber under the base of the index finger, and it is possible to suppress the formation of a gap between the index finger and the second surface. . Therefore, the user can be prevented from putting too much force on the index finger or moving the position of the index finger during play. Therefore, the accuracy of the user's play can be further improved. Furthermore, the fatigue that remains in the user's arms, shoulders, etc. after playing can be further reduced. If both the first thickened part and the second thickened part are provided, the occurrence of a gap between the racket and the user's hand will be further suppressed, allowing the user to maintain a more stable state. Be able to hold a racket. Therefore, even higher effects can be obtained.

[Ninth Embodiment] The attachment component according to any one of the sixth, seventh, and eighth embodiments is further arranged on the tip of the grip, and the user can use the shaking hand type. The user may have a convex portion on which the user's thumb rests when the grip portion is held in this manner.
According to the attachment part of the ninth embodiment, it is possible to easily provide the table tennis racket with a convex portion on which the thumb can be placed. If the racket is provided with a convex portion, the convex portion functions as a positioning portion for the thumb, so that the user can easily hold the racket in a more appropriate way when playing. In addition, the convex portion prevents the user from bending the thumb away from the rubber during play, which prevents the thumb from being placed in an inappropriate position on the racket and reducing the ability to control the racket. It can be suppressed.

[Tenth form] The attachment component according to any one of the sixth form, the seventh form, the eighth form, and the ninth form is integrally connected to the thickened part and includes a part of the grip part. It may have a gripping part constituting part.
According to the attachment part of the tenth embodiment, since the thickened part and the grip part are integrally connected, the shake-hand type table tennis racket can be made to fit easily in the user's hand. Further, it is possible to prevent the thickened portion from separating from the gripping portion and falling off from the racket. Furthermore, it is possible to easily manufacture a table tennis racket having an increased thickness, and the manufacturing efficiency can be improved.

[Eleventh Embodiment] The eleventh embodiment is provided as a mounting part that can be attached to a shake-hand type table tennis racket. The table tennis racket includes a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending toward a rear end side from the rubber region. , a rod-shaped grip part that is connected to the main body plate part in a state where the tip part enters the extension area and is gripped by a user. The attachment part of the eleventh embodiment has a convex part that is disposed on the tip of the grip part and on which the user's thumb is placed when the user holds the table tennis racket in a shake-hand manner. .
According to the attachment part of the eleventh embodiment, it is possible to easily provide a convex portion on which the thumb can be placed on the table tennis racket. According to a racket having a convex portion, since the convex portion functions as a positioning portion for the thumb, the user can easily play with a more appropriate way of holding the racket. In addition, by providing a convex portion on the racket, the user is prevented from bending his or her thumb away from the rubber during play, which may result in an inappropriate positioning of the thumb on the racket. It is possible to suppress a decrease in controllability.

[Twelfth Embodiment] The attachment component according to the eleventh embodiment may include a gripping portion constituting portion that is integrally connected to the convex portion and constitutes a part of the gripping portion.
According to the attachment part of the twelfth embodiment, since the convex part and the grip part are integrally connected, the shake-hand type table tennis racket can be made to fit easily in the user's hand. Further, it is possible to prevent the convex portion from separating from the gripping portion and falling off from the racket. The table tennis racket having the convex portion can be easily manufactured, and manufacturing efficiency can be improved.

The technology of the present disclosure can also be realized in various forms other than the shake-hand type table tennis racket and its attachment parts. For example, it can be realized in the form of a table tennis racket manufacturing method, an attachment part manufacturing method, a table tennis racket processing method, an attachment part processing method, a table tennis racket manufacturing apparatus, an attachment part manufacturing apparatus, and the like.

FIG. 1 is a schematic perspective view of a table tennis racket according to a first embodiment. A schematic plan view of a table tennis racket. FIG. 1 is a first schematic side view of a table tennis racket. The second schematic side view of the table tennis racket. The schematic perspective view which shows the auxiliary part by the side of a 1st surface. A schematic plan view showing an auxiliary part on the first surface side. The schematic perspective view which shows the auxiliary part by the side of a 2nd surface. The first schematic diagram showing how to hold the shake hand style. A second schematic diagram showing how to hold the shake hand style. FIG. 2 is a schematic perspective view showing an example of a racket board. The schematic perspective view which shows the 1st attachment part of 2nd Embodiment. The schematic perspective view which shows the 2nd attachment component of 2nd Embodiment. FIG. 7 is a schematic perspective view showing the configuration of a first surface side of a table tennis racket according to a third embodiment. FIG. 7 is a schematic perspective view showing the configuration of a second surface side of a table tennis racket according to a third embodiment. FIG. 7 is a schematic perspective view showing an auxiliary part of a fourth embodiment.

1. First embodiment:
The configuration of a shake-hand table tennis racket 10 according to a first embodiment will be described with reference to FIGS. 1 to 9. Below, the table tennis racket 10 will also be simply referred to as the "racquet 10." Although FIGS. 1 to 9 illustrate a configuration for a right-handed player, the table tennis racket 10 and the mounting parts 50a, 50b described below may be configured for a left-handed player. The same applies to the second embodiment, third embodiment, fourth embodiment, and other embodiments that will be described later.

1-1. Racket schematic configuration:
First, refer to FIGS. 1 to 4. FIG. 1 is a schematic perspective view showing the first surface 12a side of the racket 10. FIG. 2 is a schematic plan view showing the first surface 12a side of the racket 10. As shown in FIG. FIG. 3 is a schematic side view of the racket 10. FIG. 4 is a schematic side view showing the side of the racket 10 opposite to that shown in FIG.

1 to 4, arrows indicating the X direction, Y direction, and Z direction, which are directions related to the racket 10, are illustrated. The X direction, Y direction, and Z direction are orthogonal to each other. The X direction and the Y direction are directions along the ball hitting surface of the racket 10, the X direction corresponds to the width direction of the racket 10, and the Y direction corresponds to the length direction of the racket 10. In this specification, for convenience, the Y direction side in the longitudinal direction of the racket 10 is referred to as the "front end side", and the opposite side in the Y direction is referred to as the "rear end side". The Z direction corresponds to the thickness direction of the racket 10. Arrows indicating the X direction, the Y direction, and the Z direction are also shown in figures referred to later so as to correspond to FIGS. 1 to 4.

As shown in FIGS. 1 to 4, the racket 10 includes a flat main body plate portion 12 having a plate surface constituting a ball-hitting surface, and a rod-shaped grip portion 15 connected to the rear end of the main body plate portion 12. , has. As shown in FIGS. 2 to 4, the central axis CX of the racket 10 is parallel to the Y direction. The central axis CX of the racket 10 coincides with the central axis HX of the grip part 15.

As shown in FIGS. 1 to 4, the racket 10 of this embodiment is provided with an auxiliary part 20 for assisting the user in holding the racket in a shake-hand style. In each figure, the auxiliary portion 20 is hatched with halftone dots. Below, the main body plate part 12 and the grip part 15 will be explained first, and then the auxiliary part 20 will be explained.

The main body plate portion 12 is also called a blade and has a substantially disk-like shape. The two plate surfaces of the main body plate portion 12 are respectively referred to as a first surface 12a and a second surface 12b. The first surface 12a corresponds to a so-called fore surface, and the second surface 12b corresponds to a so-called back surface. The first surface 12a is the side where the thumb is placed when the racket 10 is held in a shake-hand manner as shown in FIGS. 8 and 9, which will be referred to later, and the first surface 12a is where the index finger is placed. The side surface is the second surface 12b.

Rubber RB is pasted on the first surface 12a and second surface 12b of the racket 10, respectively. The rubber RB is a resin sheet member that covers the ball hitting surface. The thickness of the rubber RB is, for example, about 1 to 4 mm. Rubber RB has a rubber layer made of rubber. The rubber RB may have a sponge layer on the surface to be adhered to the main body plate portion 12. The type of rubber RB is not particularly limited, and may be so-called back soft, front soft, grain height, single piece rubber, or anti-rubber. The thickness and type of the rubber RB may be different between the first surface 12a and the second surface 12b. The thickness and type of the rubber RB attached to the racket 10 can be selected by the user.

The first surface 12a and the second surface 12b each have a rubber region 13 on the front end side where the rubber RB is arranged, and an extension region 14 extending from the rubber region 13 toward the rear end side. The rubber region 13 and the extension region 14 are separated by a linear boundary along the X direction. The rubber region 13 occupies approximately 80 to 90% of the area of the first surface 12a and the second surface 12b. The grip portion 15 is connected to the extension region 14 .

The grip part 15 is a part held by the user, and is also called a grip. The grip portion 15 has a straight rod-like configuration along the Y direction. Moreover, the grip part 15 has a substantially elliptical cross section with a major axis in the X direction so that the user can easily grip it with a plurality of fingers. In this embodiment, the grip portion 15 has a configuration in which the grip portion 15 becomes thicker toward the rear end.

The grip portion 15 has a tip portion 16 that enters the extension region 14 of the main body plate portion 12 . In this embodiment, the tip portion 16 of the grip portion 15 is raised in the thickness direction at the center of the extension region 14 in the X direction, and extends to the boundary with the rubber region 13 .

As shown in FIGS. 1, 3, and 4, the racket 10 includes a racket board 18. The entire racket board 18 is illustrated in FIG. 10, which will be referred to in the second embodiment. The racket substrate 18 is a flat plate-shaped member disposed at the center in the thickness direction, and has a portion that constitutes the main body plate portion 12 and a portion that constitutes the center portion of the grip portion 15 in the thickness direction. For example, the racket board 18 may be constructed of a single layer of wood, or may be constructed of multiple layers of plywood laminated in the thickness direction. The plywood layer may also include layers of materials other than wood, such as carbon. The gripping portion 15 is formed into a rod shape by pasting plate-like members having a semi-elliptical cross section on both sides of the portion of the racket base 18 that constitutes the gripping portion 15 .

Incidentally, when the racket 10 is used, a side tape for protecting the rubber RB and the main body plate part 12 may be attached to the side surface of the main body plate part 12, which is also called an edge. Further, grip tape may be wrapped around the grip portion 15. The user may appropriately select whether to use side tape or grip tape and the type of side tape or grip tape to be used.

1-2. Composition of auxiliary part:
The configuration of the auxiliary part 20 provided in the racket 10 will be explained with reference to FIGS. 5 to 9.

FIG. 5 is a schematic perspective view showing the auxiliary part 20 provided on the first surface 12a side of the racket 10. FIG. 6 is a schematic plan view of the auxiliary portion 20 provided on the first surface 12a side as viewed along the Z direction. FIG. 7 is a schematic perspective view showing the auxiliary part 20 provided on the second surface 12b side. 5 to 7, the racket 10 is shown without the rubber RB attached. FIGS. 8 and 9 are schematic diagrams each showing how to hold the racket 10 in a shake-hand style. FIG. 8 shows the first surface 12a side of the racket 10 when the user holds it in a shake-hand style, and FIG. 9 shows the first side of the racket 10 when the user holds it in a shake-hand style. The state of the second surface 12b side is shown.

In this embodiment, the auxiliary portion 20 is provided in the extending region 14 of the first surface 12a and the second surface 12b of the main body plate portion 12. As will be described later, in this embodiment, the auxiliary part 20 is constituted by attachment parts 50a and 50b that are joined to the main body plate part 12 and the grip part 15. Since the auxiliary part 20 forms a part of the racket 10 that is directly touched by the user's fingers, it is preferable that the entire auxiliary part 20 has a smooth curved surface so as to fit comfortably in the user's hand.

The auxiliary part 20 is produced, for example, by cutting wood. Wood is suitable because it is lightweight and has excellent workability. In addition, wood has excellent hygroscopicity and is easy to fit in the user's hands. Note that the auxiliary portion 20 may be partially made of clay or a resin material within an allowable range predetermined by official regulations or the like.

1-2-1. Thickened part:
The auxiliary portion 20 has an increased thickness portion 22 that protrudes from the surface of the rubber region 13 in the thickness direction. The thickened portion 22 is provided adjacent to the tip portion 16 of the grip portion 15 in the width direction in the extension region 14 . The thickened portion 22 includes a first surface thickened portion 22a provided on the first surface 12a shown in FIGS. 5 and 6, and a second surface thickened portion 22a provided on the second surface 12b shown in FIG. It has a thick portion 22b.

As shown in FIG. 7, the first surface thickened portion 22a and the second surface thickened portion 22b are provided so as to sandwich the extension region 14 of the main body plate portion 12 in the thickness direction. As shown in FIGS. 8 and 9, when the user holds the racket 10 in a shake-hand manner, the first thickened portion 22a is placed under the thumb, and the second thickened portion 22b is placed at the base of the index finger. is placed below. Hereinafter, when there is no particular need to distinguish between the first surface thickened portion 22a and the second surface thickened portion 22b, they will simply be referred to as "thickened portion 22."

As shown in FIGS. 5 and 7, the thickened portion 22 forms a step 23 adjacent to the end surface of the rubber RB that covers the rubber region 13. As shown in FIG. If the thickened portion 22 is provided, the formation of a step on the end face of the rubber RB on the plate surface of the main body plate 12 is suppressed, and the user's fingers placed on the rubber RB and the main body plate are prevented from forming. 12 and the extension area 14 is suppressed from forming a gap.

If the racket 10 is provided with the first surface thickened portion 22a, the formation of a gap between the thumb and the extending region 14 of the racket base plate 18 is suppressed. Further, if the racket 10 is provided with the second surface thickened portion 22b, it is possible to suppress the formation of a gap between the base of the index finger and the extension area 14 of the racket base plate 18. If the racket 10 is provided with both the first surface thickened portion 22a and the second surface thickened portion 22b, a gap is formed between the user's hand and the extending region 14 of the main body plate portion 12. This will be further suppressed.

According to the knowledge obtained by the inventor of the present invention while instructing table tennis players, when the gap between the user's fingers and the racket 10 becomes larger, the user holds the racket 10 harder during play. In order to stabilize the body, there is a tendency to consciously or unconsciously increase the force applied to the fingertips. Additionally, if the force applied to the fingertips when holding the racket 10 becomes large, the muscles in the forearm will become stiff, the range of motion of the arm joints will become narrower, and there is a possibility that the user will not be able to perform adequately during play. It gets expensive. Furthermore, after playing, there is a high possibility that severe muscle fatigue will remain in the user's arms, shoulders, etc.

On the other hand, if the racket 10 is provided with the thickened portion 22 and the gap between the user's fingers and the extension area 14 of the racket 10 is reduced, the user can use less force. , it becomes easier to hold the racket 10 in a stable state. Therefore, it is possible to prevent the user from applying unnecessary force to the fingertips during play, and it is possible to prevent the user's arms from becoming stiff during play. Therefore, the user can move the arm more flexibly during play, and can improve the accuracy of play. Furthermore, it is possible to reduce muscle fatigue that remains in the user's arms, shoulders, etc. after playing.

The height of the step 23 formed by the thickened portion 22 is preferably approximately the same as the thickness of the rubber RB. In this way, formation of a step between the thickened portion 22 and the rubber RB can be suppressed. Therefore, while playing, the user may feel uncomfortable with such a difference in level with the fingertip placed on the racket 10, and may unconsciously change the position of the finger or apply unnecessary force to the fingertip. This can improve the precision of the user's play.

It is preferable that the thickened portion 22 be formed so that no gap is formed between the thickened portion 22 and the end surface of the rubber RB. If there is a gap between the thickened portion 22 and the end face of the rubber RB, the user may feel uncomfortable in the gap with his or her fingertips and unconsciously change the position of the finger or apply unnecessary force to the fingertip. This is because there is a high possibility that the game will be affected by the game. However, the end face of the rubber RB and the step 23 of the thickened portion 22 adjacent thereto do not need to be in complete contact with each other, and for example, a slight gap of several mm is acceptable.

1-2-2. Convex part:
As shown in FIG. 5, the auxiliary part 20 has a convex part 25 provided on the tip part 16 of the grip part 15 on the first surface 12a. The convex portion 25 is formed to protrude in the thickness direction at the tip portion 16 of the grip portion 15 . As shown in FIG. 8, the convex portion 25 functions as a part on which the user's thumb rests when the user holds the racket 10 in a shaking hand manner.

As shown in FIG. 6, the convex portion 25 is formed across the entire width direction of the tip portion 16 of the grip portion 15, and is aligned with the user's thumb with respect to the central axis HX of the grip portion 15. It is formed to extend diagonally. As shown in FIGS. 5 and 6, the convex portion 25 has a first slope 26a facing toward the rubber region 13 and a second slope 26b facing opposite to the first slope 26a. Furthermore, a peak portion 27 is formed on the convex portion 25 between the first inclined surface 26a and the second inclined surface 26b.

As shown in FIG. 5, the first inclined surface 26a is a curved surface slightly recessed toward the rear end so that the abdomen of the thumb can easily come into contact with it without causing discomfort to the user. is preferred. Further, as shown in FIG. 6, it is preferable that the peak portion 27 extends obliquely with respect to the central axis CX of the grip portion 15 while being curved so as to be depressed in the direction in which the thumb abuts.

As shown in FIG. 6, when viewed in the thickness direction of the racket 10, the inclination angle of the convex portion 25 with respect to the central axis HX of the grip portion 15 is preferably approximately 30 to 60 degrees, and 40 to 50 degrees. It is more preferable that When the convex portion 25 is viewed in the thickness direction, it is preferable that the intersection angle θ at which the peak portion 27 and the central axis HX of the gripping portion 15 intersect is within the range of 30 to 60 degrees, and preferably within the range of 40 to 50 degrees. More preferably, it is within the range. The intersection angle θ is the smaller of the angles between the central axis HX and a tangent to the peak 27 passing through the intersection of the peak 27 and the central axis HX.

Generally, when playing with a shake hand style, by moving the position of the thumb, you can switch between the forehand form of hitting the ball on the first surface 12a and the back form of hitting the ball on the second surface 12b. The angle of the ball hitting surface of the racket 10 can be easily adjusted. However, according to the findings of the inventor of the present invention, if the thumb attached to the racket 10 moves too far to the rear end side, there is a possibility that the load on the user's forearm muscles will increase, and the fore and back There is a high possibility that problems will occur when switching forms. Therefore, if the racket 10 is provided with the convex portion 25, it is possible to prevent the user from unconsciously moving the thumb too far toward the rear end side during play. Therefore, the load placed on such forearm muscles can be reduced. Further, it is possible to suppress the switching between the foreground and the back form from being inhibited.

It is preferable that the convex portion 25 is configured to have a height such that when the user's thumb is placed on it, the peak portion 27 is located around the center of the thumb in the width direction. If the height of the convex portion 25 is too high, the contact area of the user's thumb increases, and the angle of the ball hitting surface of the racket 10 tends to fluctuate due to the force that the convex portion 25 receives from the thumb. This is because there is an increased possibility that the accuracy of play will decrease.

Moreover, the inventor of the present invention found that it is more preferable for the protrusion 25 to have the following configuration by trying out various shapes of the protrusion 25 in actual play. As shown in FIG. 6, when the racket 10 is viewed in the thickness direction, the peak portion 27 of the convex portion 25 extends from the grip portion 15 toward the rubber region 13 while drawing a curve, and extends at the boundary of the rubber region 13. It is preferable to reach . At this time, the width b of the second slope 26b at the boundary between the rubber region 13 and the extension region 14, that is, the width It is more preferable that the width b in the direction is about 20 to 40% of the width a of the tip 16 of the gripping part 15. Further, it is more preferable that the width b is about 25 to 35% of the width a. According to this configuration of the convex portion 25, the thumb can be placed in a more appropriate position, and the precision of the user's play can be further improved.

1-2-3. Mounting parts:
In this embodiment, the auxiliary part 20 includes a first mounting part 50a in which a first surface thickened part 22a and a convex part 25 are integrated, which is arranged on the first surface 12a, and a first attachment part 50a, which is arranged on the second surface 12b. and a second attachment component 50b that constitutes the second surface thickened portion 22b. If the auxiliary part 20 is constituted by the attachment parts 50a and 50b, the auxiliary part 20 can be easily retrofitted to a ready-made racket, thereby facilitating the manufacture of the racket 10. Furthermore, by replacing the attachment parts 50a and 50b, the auxiliary part 20 can be easily shaped to fit the user's hand better.

According to the first attachment component 50a in which the first surface thickened portion 22a and the convex portion 25 are integrated, the first surface thickened portion 22a and the convex portion 25 can be easily provided on the racket 10 at the same time. Furthermore, if the first surface thickened portion 22a and the convex portion 25 are integrated, a portion that causes the user to feel uncomfortable may be formed at the boundary between the first surface thickened portion 22a and the convex portion 25. It can be suppressed. Furthermore, only the convex portion 25 that receives the force from the thumb can be prevented from falling off from the racket 10.

1-3. Summary of the first embodiment:
As described above, according to the racket 10 of the first embodiment, the auxiliary part 20 including the thickened part 22 and the convex part 25 can appropriately assist the user in shaking hand style while playing. It is possible to improve the accuracy of the user's play. Moreover, the user's muscle fatigue after playing can be reduced. Furthermore, in the first embodiment, since the auxiliary part 20 is constituted by the attachment parts 50a and 50b, the auxiliary part 20 can be easily provided on the racket 10.

2. Second embodiment:
Referring to FIGS. 10 to 12, attachment parts 50Aa and 50Ab of a shake-hand type table tennis racket as a second embodiment will be described. FIG. 10 shows an example of the racket board 18 to which the attachment parts 50Aa and 50Ab of the second embodiment are attached. Examples of attachment parts 50Aa and 50Ab of the second embodiment are illustrated in FIGS. 12 and 13, respectively.

See FIG. 10. The racket board 18 described in the first embodiment is a main component constituting the main body of the racket, and is composed of a flat plate-like member. The racket base plate 18 has a first portion 18 a that constitutes the main body plate portion 12 and a second portion 18 b that constitutes the central portion of the grip portion 15 .

In the second embodiment, the racket 10 is completed by attaching attachment parts 50Aa and 50Ab to the racket board 18, as described below. The attachment parts 50Aa and 50Ab are fixed to the racket board 18 using, for example, an adhesive. Note that even after the racket 10 is completed, the shape of the auxiliary part 20 can be modified by cutting so that it fits comfortably in the user's hand.

With reference to FIGS. 11 and 12, the configuration of attachment parts 50Aa and 50Ab of the second embodiment will be described. 11 and 12 schematically illustrate how each attachment component 50Aa, 50Ab is attached to the racket base plate 18, respectively. In FIGS. 11 and 12, for convenience, areas on the racket base plate 18 to which the respective attachment parts 50Aa and 50Ab are fixed are hatched.

Refer to FIG. 11. The first attachment component 50Aa includes a first surface thickened portion 22a and a convex portion 25 having the same configuration as described in the first embodiment. The first surface thickened portion 22a and the convex portion 25 are integrally connected while being arranged in the X direction.

The first attachment component 50Aa further includes a grip portion forming portion 52. The grip portion forming portion 52 is connected to the rear end side of the convex portion 25 . The grip portion forming portion 52 is configured as a plate-shaped portion having a semi-elliptical cross section and having a longitudinal direction in the Y direction. The grip part forming part 52 is laminated so as to cover the second part 18b of the racket base plate 18, and is located on the outside of the first surface 12a side of the grip part 15 described in the first embodiment shown in FIGS. 1 to 9. Configure parts.

Refer to FIG. 12. The second attachment component 50Ab includes a second surface thickened portion 22b having a configuration similar to that described in the first embodiment, and a grip portion forming portion 52 arranged on the second surface 12b side. The second attachment part 50Ab has a structure in which the second surface thickened part 22b is connected to the side of the tip of the grip part forming part 52 and integrated. The tip portion of the grip portion forming portion 52 of the second attachment component 50Ab has an inclined surface that slopes downward toward the rubber region 13. The grip part forming part 52 of the second attachment part 50Ab is laminated so as to cover the second part 18b of the racket base plate 18, and is the second part of the grip part 15 described in the first embodiment shown in FIGS. 1 to 9. It constitutes the outer part on the surface 12b side.

According to the racket configured using the attachment parts 50Aa and 50Ab of the second embodiment, the auxiliary part 20 and the grip part 15 are integrated, so that the auxiliary part 20 is prevented from falling off from the racket. , the durability of the racket is increased. Furthermore, according to the attachment parts 50Aa and 50Ab of the second embodiment, the auxiliary part 20 and the grip part 15 can be formed at the same time by fixing them to the racket board 18, so that the racket 10 described in the first embodiment can be A racket having a configuration similar to the above can be efficiently manufactured. In addition, the attachment parts 50Aa, 50Ab of the second embodiment and the racket using them can provide various effects similar to those described in the first embodiment.

3. Third embodiment:
The configuration of a racket 10B according to the third embodiment will be described with reference to FIGS. 13 and 14. FIG. 13 is a schematic perspective view showing the configuration of the auxiliary part 20B provided on the first surface 12a side of the racket 10B of the third embodiment. FIG. 14 is a schematic perspective view showing the configuration of the auxiliary part 20B provided on the second surface 12b side of the racket 10B of the third embodiment.

The configuration of the racket 10B of the third embodiment is the racket described in the first embodiment except that the racket 10B of the third embodiment has the auxiliary part 20B of the third embodiment instead of the auxiliary part 20 described in the first embodiment. It is almost the same as 10. The structure of the auxiliary part 20B of the third embodiment is almost the same as the auxiliary part 20 of the first embodiment, except that the convex part 25 is omitted.

In the racket 10B of the third embodiment, the convex portion 25 is not provided as the auxiliary portion 20B, and only the first surface thickened portion 22a and the second surface thickened portion 22b are provided. The first surface thickened portion 22a is formed by retrofitting the attachment part 50Ba, and the second surface thickening section 22b is formed by the retrofitting of the attachment component 50Bb.

According to the racket 10B of the third embodiment, since the first surface thickened portion 22a and the second surface thickened portion 22b are provided, the user can hold the racket 10B more stably. Therefore, during play, the user is prevented from applying unnecessary force to the fingertips attached to the racket 10B, and the muscles of the arm holding the racket 10B are prevented from becoming stiff. Therefore, the accuracy of the user's play can be improved, and the muscle fatigue that remains after the user's play can be reduced. In addition, the racket 10B of the third embodiment and the mounting parts 50Ba, 50Bb
According to this, various effects described in each of the above embodiments can be achieved.

4. Fourth embodiment:
FIG. 15 is a schematic perspective view showing the configuration of an auxiliary part 20C included in a racket 10C according to the fourth embodiment.

The configuration of the racket 10C of the fourth embodiment is the racket described in the first embodiment except that it has an auxiliary part 20C of the fourth embodiment instead of the auxiliary part 20 described in the first embodiment. It is almost the same as 10. Further, the auxiliary part 20C of the fourth embodiment is almost the same as the auxiliary part 20 described in the first embodiment, except that it does not have the thickened part 22 and only has the convex part 25. be. The auxiliary part 20C is constituted by a mounting part 50C that is attached to the racket 10C. The configuration of the convex portion 25 of the auxiliary portion 20C is almost the same as the configuration of the convex portion 25 described in the first embodiment.

According to the racket 10C of the fourth embodiment, by having the convex portion 25 as the auxiliary portion 20C, it is possible to prevent the user from unconsciously moving the thumb too far toward the rear end side during play. Therefore, the load placed on such forearm muscles can be reduced. Further, it is possible to suppress the switching between the foreground and the back form from being inhibited. Further, according to the attachment part 50C of the fourth embodiment, the protrusion 25 can be easily provided on the racket 10C by retrofitting. In addition, according to the racket 10C and the attachment part 50C of the fourth embodiment, various effects described in each of the above embodiments can be achieved.

5. Other embodiments:
The technology of the present disclosure is not limited to the configurations of the above embodiments or the configurations described as other embodiments in each embodiment, and can be modified as follows, for example. All other embodiments described below are positioned as examples of forms for implementing the technology of the present disclosure, similarly to the above embodiments.

・Other embodiment 1:
In the first, third, and fourth embodiments described above, the auxiliary parts 20, 20B, and 20C are configured as part of the racket board 18 instead of being configured as retrofitted parts. It's okay. That is, the auxiliary parts 20, 20B, and 20C may be integrally manufactured as part of the racket board 18 when the racket board 18 is manufactured.

・Other Embodiment 2:
In the first embodiment, second embodiment, and third embodiment described above, the thickened portion 22 and the convex portion 25 may be configured as separate attachment parts separated from each other. Furthermore, in the second embodiment described above, the grip portion forming portion 52 may be manufactured as a separate component from the attachment components that constitute the auxiliary portion 20. In the second embodiment described above, the grip portion forming portion 52 may have a structure in which a portion thereof is omitted, such as being formed of only the distal half, for example.

・Other Embodiment 3:
In the first embodiment, second embodiment, and third embodiment described above, at least one of the first surface thickened portion 22a and the second surface thickened portion 22b may be omitted. Further, in the first embodiment, second embodiment, and third embodiment described above, the thickened portion 22 is provided on the grip portion 15 so as to be compatible with both right-handed and left-handed users. They may be formed on both sides of the tip portion 16.

・Other embodiment 4:
In the third embodiment and the fourth embodiment described above, the mounting parts 50Ba, 50Bb, and 50C have the protrusion 25 and a part of the grip part 15 integrated, similar to the mounting part 50Aa of the second embodiment. It may have a specific configuration. Further, in the fourth embodiment, the second surface thickened portion 22b may be provided on the second surface 12b side of the racket 10C.

DESCRIPTION OF SYMBOLS 10, 10B, 10C... Table tennis racket, 12... Main body plate part, 12a... First surface, 12b... Second surface, 13... Rubber area, 14... Extending area, 15... Gripping part, 16... Tip part, 20 , 20B, 20C... Auxiliary part, 22... Thickened part, 22a... First side thickened part, 22b... Second side thickened part, 23... Step, 25... Convex part, 26a... First slope, 26b... Second inclined surface, 27... Ridge portion, 18... Racket board, 18a... First part, 18b... Second part, 50a, 50b, 50Aa, 50Ab, 50Ba, 50Bb, 50C... Mounting parts, 52... Grip component , CX, HX...center axis, RB...rubber

Claims (12)

A shake-hand type table tennis racket,
a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending toward the rear end side from the rubber region;
a rod-shaped grip part that is held by a user and is connected to the main body plate part in a state where the tip part enters the extension area;
a convex part provided at the tip of the gripping part, on which the user's thumb rests when the user holds it in a shake-hand style;
Equipped with
The convex portion is arranged with respect to the central axis of the gripping portion when viewed in the thickness direction of the main body plate portion so as to align with the user's thumb when the user holds it in a shake-hand style. A table tennis racket that extends diagonally . The table tennis racket according to claim 1, further comprising:
The rubber is provided next to the tip of the gripping part in the extension region so as to cover the extension region, and protrudes beyond the rubber region in the thickness direction to increase the thickness of the extension region. an increased thickness portion forming a step adjacent to an end surface of the rubber covering a region;
A table tennis racket with The table tennis racket according to claim 2 ,
Among the plate surfaces of the main body plate portion, when the user holds the body in a shake hand style, the surface on which the thumb of the user is placed is the first surface, and the surface on which the index finger of the user is placed is the first surface. When the surface is the second surface,
The table tennis racket, wherein the thickened portion includes at least a first surface thickened portion disposed under the user's thumb on the first surface. The table tennis racket according to claim 3 ,
The table tennis racket, wherein the thickened portion further includes a second surface thickened portion disposed under the base of the index finger on the second surface. A shake-hand type table tennis racket,
a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending toward the rear end side from the rubber region;
a rod-shaped grip part that is held by a user and is connected to the main body plate part in a state where the tip part enters the extension area;
The rubber is provided next to the tip of the gripping part in the extension region so as to cover the extension region, and protrudes beyond the rubber region in the thickness direction to increase the thickness of the extension region. an increased thickness portion forming a step adjacent to an end surface of the rubber covering a region;
A table tennis racket with The table tennis racket according to claim 5,
The table tennis racket, wherein the height of the step formed by the thickened portion is approximately the same as the thickness of the rubber. A mounting part that can be attached to a shake-hand table tennis racket,
The table tennis racket includes a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending from the rubber region toward the rear end side, and a tip portion of the table tennis racket that includes a rod-shaped grip part that is connected to the main body plate part in a state where it enters the exit area and is gripped by the user;
The attachment part is disposed on the tip of the gripping part, and has a convex part on which the user's thumb is placed when the user holds the table tennis racket in a shake-hand manner;
The convex portion is aligned with the central axis of the grip when viewed in the thickness direction of the main body plate so as to align with the user's thumb when the user holds the grip in a shake-hand style. An attachment part that is attached to the table tennis racket so as to extend in a diagonal direction . The attachment part according to claim 7,
The attachment part is disposed next to the tip of the gripping part in the extension area so as to cover the extension area, and increases the thickness of the extension area, thereby increasing the thickness of the rubber that covers the rubber area. A mounting part having an increased thickness that forms a step adjacent to the end face . The attachment part according to claim 8 ,
Among the plate surfaces of the main body plate portion, when the user holds the body in a shake hand style, the surface on which the thumb of the user is placed is the first surface, and the surface on which the index finger of the user is placed is the first surface. When the surface is the second surface,
The attachment component, wherein the thickened portion includes at least a first side thickened portion located under the thumb of the user on the first side. The attachment part according to claim 9 ,
The attachment part, wherein the thickened portion further includes a second surface thickened portion disposed under the base of the index finger on the second surface. A mounting part that can be attached to a shake-hand table tennis racket,
The table tennis racket includes a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending from the rubber region toward the rear end side, and a tip portion of the table tennis racket that includes a rod-shaped grip part that is connected to the main body plate part in a state where it enters the exit area and is gripped by the user;
The attachment part has an increased thickness part that is disposed next to the tip of the grip part in the extension area and forms a step adjacent to the end surface of the rubber,
A mounting component having a gripping part forming part that is integrally connected to the thickened part and forming a part of the gripping part. A mounting part that can be attached to a shake-hand table tennis racket,
The table tennis racket includes a flat main body plate portion having a plate surface including a rubber region covered with rubber and an extension region extending from the rubber region toward the rear end side, and a tip portion of the table tennis racket that includes a rod-shaped grip part that is connected to the main body plate part in a state where it enters the exit area and is gripped by the user;
The attachment part is disposed next to the tip of the gripping part in the extension area so as to cover the extension area, and increases the thickness of the extension area, thereby increasing the thickness of the rubber that covers the rubber area. A mounting part having an increased thickness that forms a step adjacent to the end face .

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