JP2001170241A - Baseball or softball ball catching device in which the rigidity of the members constituting the ball catching device is partially changed - Google Patents

Abstract

(57) [Problem] To provide a baseball or softball catching device in which the rigidity of members constituting the catching device of the present invention is partially changed, a player can use the catching device without impairing the flexibility. Even if you catch the ball at the end (near the little finger), the ball is hard to spill,
The aim is to develop a catching device that makes it difficult for players to make errors. SOLUTION: The ball catching tool for baseball or softball in which the rigidity of a member constituting the ball catching tool according to the present invention is partially changed, the Young's modulus around the little finger portion of the ball catching tool is high from 30 MPa to 300 GPa. By using a rigid material, even if a player catches the ball at the end of the catching tool (near the little finger), the amount of movement of the ball in the catching tool is minimized, and the ball is less likely to spill. It is a catch that players are less likely to make an error.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball catching tool for baseball or softball (hereinafter referred to as a ball catching tool) which minimizes the amount of ball movement in a glove which occurs when catching a ball around the little finger. This is a technical field related to a ball catching tool designed to minimize the ball, that is, to prevent the ball from spilling from the glove.

[0002]

2. Description of the Related Art In order to prevent a ball from falling when catching a ball in a conventional ball catching tool, various types of cores and reinforcing materials are often inserted into the ball catching tool. It is considered that the determination of the positioning, the size, and the like of the core material and the reinforcing material is based on the experience and intuition accumulated by craftsmen for a long time. Japanese Utility Model Application Publication No. 54-86833 discloses a ball catching device characterized in that large through holes and small through holes are alternately provided in a dotted arrangement on a catching surface, and a back skin is fixed to the back surface thereof. It has been disclosed. Japanese Utility Model Application No. 3-93136 incorporates a core material including a core material having a size that can be abutted from the thumb to the surface of the hand and a holding member having substantially the same size as the core material. There is disclosed a ball catching tool characterized by the following.

[0003]

However, the determination of the positioning, size, etc. of the core material and the reinforcing material based on experience and intuition is well known to athletes as ball catching tools, unless the shape of the ball catching tool differs from the conventional one. Although it is good and convenient in some cases, it cannot respond to diversifying needs and catching tools with novel shapes, and cannot be said to be the optimal method. In addition, the real application Sho 54-86
The ball catching tool described in 833 emphasizes a substantially central portion of the ball catching tool as a ball catching tool surface, and the player catches the ball at a portion deviating from the center portion of the ball catching tool such as a little finger portion. In this case, the ball is easily spilled from the grab, and the probability that a player cannot catch the ball, that is, an error is increased. That is,
No consideration is given to the end portions of the ball catching portion such as the thumb portion and little finger portion of the ball catching device. Further, in the ball catching tool described in Japanese Utility Model Application No. 3-93136, the position of the core material to be incorporated is wide from the thumb to the surface of the hand, and the flexibility near the base of the thumb is emphasized. Because of the presence of the core material, there is a problem in the flexibility of the ball catching tool.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is difficult for a player to catch a ball at an end portion (near a little finger portion) of a ball catching tool without impairing the flexibility. Has invented a catching tool that is less likely to cause an error.

In other words, the ball catching device according to the present invention uses a highly rigid material around the little finger portion, and the upper skin and the palm side from the base of the little finger that does not face the ring finger to the fingertip. Use a high-rigidity material around the suture of the epidermis, or use a high-rigidity material around the suture of the instep and palmar skins from the base to the fingertip at the little finger, or Suture of the back and palmar epidermis at the ring finger
By using a high-rigidity material in the periphery, even if the player catches the ball at the end of the ball catching device (near the little finger), the ball is not easily spilled, and the player is less likely to make an error without impairing the flexibility. Tool.

[0006]

Embodiments of the present invention will be described below. The ball catching tool of the present invention is characterized by using a highly rigid material around the little finger. As shown in FIG. 1, when a player wears a ball catching tool such as a baseball glove in his hand, usually, in the ball catching tool, from the tip of the little finger of the player to the tip of the little finger of the ball catching tool, compared with fingers other than the little finger, Clearly, the design is such that the gap (1) is large. Unless the rigidity of the gap portion of the ball catching device, including the portion on the little finger of the player, is made higher than other portions, when the player catches the ball around the little finger portion, the force of the little finger will catch the ball. The gap (1) of the little finger part is opened to the outside of the ball catching tool without being transmitted to the entire little finger part of the ball catching tool, and the ball is easily spilled from the ball catching tool. Therefore, the ball catching device of the present invention catches the ball so that the gap portion (1) of the little finger portion opens to the outside of the ball catching device extremely even if the player catches the ball around the little finger portion. A high-rigidity material was used around the little finger portion including the gap portion (1) of the ball.

The high-rigidity material has a Young's modulus of 30 MP.
It is a material that is 300 GPa from a. The material used as the ball catching tool is usually leather (artificial leather) and 10
It is from 50 MPa to 50 MPa. Therefore, the material grade of the leather (artificial leather) to be used may be partially changed to a material with high rigidity, or the rigidity may be increased by partially embossing the used leather (artificial leather) or impregnating the resin. ,
By inserting or attaching a reinforcing material such as metal or resin inside or outside the ball catching tool, the Young's modulus of the ball catching material partially
The rigidity can be as high as 30 MPa to 300 GPa. In addition, if the position of the high-rigidity material used for the ball catching tool is further limited partially in the vicinity of the little finger portion, the ball catching tool can be made more lightweight without impairing the ball catching performance. Can also be designed. The detailed determination of the position of the high-rigidity material around the little finger portion can be determined by finite element analysis using a ball catching model, a hand model, and a ball model. Details of the finite element analysis are as follows.

First, when a player catches a ball with a ball catching tool, attention was paid to the deformation state of the ball catching tool after ball catching and the moving state of the ball. In other words, it was analyzed which part of the ball catching tool near the little finger portion had higher rigidity and reduced the ball movement after catching the ball. In the finite element analysis, a state in which the ball catching model was attached to the hand-shaped model was set and reproduced by a computer. Then, an operation of vertically colliding the ball model with the center of the little finger of the ball catcher model was performed in the computer, and the time history of the deformed state of the ball catcher model after the collision and the moving state of the ball model was analyzed. In the ball-catching tool model, 13 types of samples are set as shown in Tables 1 and 2 below and FIGS. 3 to 15 to set a portion where the rigidity near the little finger portion is set to be higher, and a comparison is made among these. did.

[0009]

[Table 1]

[0010]

[Table 2]

In each of the ball catching tool models shown in Tables 1 and 2, the "high rigidity material" is generally assumed to be hard plastics used as a reinforcing material of the ball catching tool.
It was entered as 0 GPa. Further, in each ball catching tool model, a portion where “high-rigidity material” is not used, and a sample N
o. In the case of "all uniform rigidity" of (BL), a leather material used as a material of a ball catching tool is usually assumed, and physical properties are input as a Young's modulus of 20 MPa.

On a computer, the shapes of a ball catching tool model, a hand-shaped model, and a ball model were input to finite element generation software, and each model was divided into lattice elements (finite elements). Table 3 below shows the input of the shape of each model and the conditions for dividing the model into grid elements.

[0013]

[Table 3]

Then, a state in which the ball catching model is attached to the hand-shaped model is set on the computer, and as shown in FIG. 16, the ball model (4) is moved to substantially the center of the little finger of the ball catching model (3). An operation was performed to cause a vertical collision. At this time, as shown in FIG. 17, the Z-axis is substantially the center line of the palm surface on the palm side of the little finger part of the ball catcher model (3), and the origin is almost the center of the little finger on the Z axis. The collision point (P) of the model (4) was used. Then, as shown in FIG. 18, the Y axis was set at the origin in the same direction as the collision direction of the ball model (4), and after setting the Y axis, the X axis was set to obtain three-dimensional coordinates.

The collision speed of the ball model was set at 29.2 mm / sec (105 Km / h), which was close to the hitting speed. The ball model collision test was performed on a computer with respect to the 14 types of ball catcher models shown in Tables 1 and 2, and the ball model collided with the ball catcher model and the little finger portion thereof. The shape change and the advancing direction of the ball model were approximately as follows for each ball catching tool model.

When the ball model collides with the ball-catcher model, the palm surface of the little finger portion of each ball-catcher model becomes the upper surface (X
19- (a) and 19-
As shown in (b), it was found that the ball model was opened outside the ball catcher model (3), and at the same time, the ball model advanced in the M direction on the XY plane. Similarly, when the ball model after the collision is viewed from the front of the little finger portion (ZX plane) of the ball catcher model (3), as shown in FIGS. 20- (a) and 20- (b),
In the ZX plane, it was found that the vehicle traveled in the N direction (below the ball catching model). It was also found that the ball model collided with the ball catching tool model and, after 5 msec, sufficiently left the ball catching tool model.

Generally, a ball catching device having excellent shock absorption absorbs the ball speed well when the player receives the ball, so that the rebound speed of the ball becomes smaller and the player can easily catch the ball. . In addition, the moving distance of the ball for a certain period of time after the ball collides with the catching tool is also reduced. Therefore, in this analysis, the movement distance of the ball model from the time when the ball model collides with the ball catching model to 5 msec is analyzed, and the ball catching model when the movement distance is small absorbs the ball speed well. (It is easy for players to catch the ball.)

The moving distance of the ball model after the collision was calculated by calculating the moving distance at the center point of the ball model in three-dimensional coordinates. FIG. 21A and FIG.
1- (b), FIG. 22- (a), FIG. 22- (b), and FIG. 22- (c), after the collision, the center point solid coordinates of the ball model are recorded every 0.1 msec, 0.1
The movement amount is calculated from the X, Y, and Z components moved in msec. The formula for calculating the distance of the center point of the ball model moved at 0.1 msec is as follows.

[0019]

ΔL = (ΔX ² + ΔY ² + ΔZ ² ) ^1/2 ΔL: Distance moved by the ball model at 0.1 msec after collision ΔX: Distance of X coordinate at which the ball model moved 0.1 msec after collision ΔY: Distance of the Y coordinate moved 0.1 msec after the collision of the ball model ΔZ: Distance of Z coordinate moved 0.1 msec after the collision of the ball model

After colliding with the distance ΔL of the center point of the ball model moved for 0.1 msec, 5 msec
c, and the total value was taken as the movement amount of the ball model.
Table 4 shows the movement amount of each of the 14 types of ball catching tool models shown in Table 1 from the collision of the ball model to 5 msec.

[0021]

[Table 4]

As apparent from Table 4, the sample No.
1 and sample no. 5 and sample no. In the case of the ball catcher model of No. 7, it was found that the movement amount of the ball model was smaller than that of the other samples.

Therefore, the ball catching device of the present invention uses a highly rigid material around the little finger part.
Sample N that seems to have a small amount of ball movement after collision
o. A high-rigidity material was used around the stitches of the back skin and the palmar skin in the little finger part and the ring finger part with reference to the seven ball catcher model.

Further, according to the ball catching tool of the present invention, the test results show that the ball movement amount after the collision is smaller than that of the sample No. With reference to the five ball catcher model, a highly rigid material was used around the suturing portion between the back skin and the palmar skin at the little finger from the base to the fingertip.

Further, the ball catching device of the present invention shows that the sample No. 1 in which the ball movement after collision is considered to be smaller than the above test results. (1) With reference to the ball catcher model, a high-rigidity material was used around the stitching portion between the back skin and the palmar skin from the base of the little finger to the fingertip on the side not facing the ring finger side.

As the high rigidity material, a material such as metal, hard plastic, felt, cloth, leather, artificial leather, synthetic leather, etc., which is harder than a normal leather core material, is used. When the high-rigidity material is installed in a ball-catching tool, it is sandwiched between leathers and is firmly fixed. Further, the high-rigidity material can be fixed to the leather by an adhesive or sewn.

As the shape of the highly rigid material, FIG.
(C), FIG. 24- (d), FIG. 24- (e), FIG.
(F), FIG. 24- (g), FIG. 24- (h), FIG.
As shown in (i) and FIG. 24- (j), the cross-sectional shape is rectangular, square, circular, elliptical, triangular, trapezoidal, and the like.
Any shape. The size of the cross section is 1 mm to 20 mm between the largest ends of the cross section. Further, the high-rigidity material is continuously applied to a predetermined portion of the ball catching device (around the stitching portion between the upper skin and the palmar skin), but may be divided into a plurality of parts.

[0028]

The present invention will be described below in more detail with reference to examples. Embodiments of the present invention are described with reference to FIGS.
As shown in (b), it is a hardball baseball glove, and the material used as the main material of the main body is cowhide leather. The cow leather part has a Young's modulus of 20 MPa. FIG.
-Two polycarbonates formed into a vertically long shape as shown in (c) were prepared and used as a core material (6). The core material (6)
Has a trapezoidal cross section. Then, as shown in FIG. 23- (c), the core material (6) is inserted inside the stitches of the back skin and the palmar skin in the little finger part and the third finger part, respectively, and the inner leather and adhesive are used. Glued. The Young's modulus of the core material (6) is 2.0 GPa. The cross-sectional shape is a trapezoid, and the height of the trapezoid is 10 mm.

[0029]

The present invention is embodied in the form described above and has the following effects.

The baseball protector according to the present invention is shown in FIG.
As shown in (a), FIG. 23- (b), and FIG. 23- (c), the material used as the main material of the main body is cowhide, and the Young's modulus of the cowhide is 2.0 GPa. . Also,
In the little finger part and the ring finger part, a core material of polycarbonate, which is a high-rigidity material, is adhered to the inside of the stitched part of the back skin and palmar skin, and the Young's modulus of the polycarbonate is
2.0 GPa. Therefore, as a whole, since the Young's modulus is 200MPa cowhide leather,
Light weight and excellent flexibility. Moreover, since the core of polycarbonate having a Young's modulus of 2.0 GPa is adhered only to the inner side of the suture of the back skin and the palmar skin around the little finger, especially at the little finger and the third finger, Lightweight,
Flexibility is not impaired, and when a player catches a ball,
Even if the ball is received in the vicinity of the little finger, the ball is unlikely to be repelled from the ball catching device, that is, a baseball protective device that is less likely to cause an error.

[Brief description of the drawings]

FIG. 1 is a diagram showing the positions of palms inside a baseball glove.

FIG. 2A is a front view of a ball catcher using uniform rigidity for all materials, FIG. 2-B is a side view thereof, and FIG. FIG. 2D is a front view when a ball catching tool using a material having uniform rigidity is modeled on a computer, and FIG. 2D is a side view thereof.

FIG. 3A is a ball-catching tool using a highly rigid material around a suturing portion between the upper skin and the palmar skin from the base of the little finger that is not facing the ring finger to the fingertip. FIG. 3-b is a side view thereof, and FIG. 3-c is a front view thereof.
Front view of a computer-based model of a ball-catching tool using a high-rigidity material around the seam of the back and palmar skins from the base of the little finger to the fingertip on the side not facing the ring finger side to the fingertip FIG. 3D is a side view thereof.

FIG. 4A is a ball catching device using a highly rigid material around the suturing portion between the back skin and the palmar skin from the base of the little finger to the fingertip facing the ring finger side. Fig. 4-b is a side view thereof, and Fig. 4-c is a frontal epidermis and a palmar epidermis of the little finger from the base of the side facing the ring finger to the fingertip. FIG. 4D is a front view of a ball-catching tool using a high-rigidity material around the suturing portion when the ball-catching tool is modeled on a computer, and FIG.

FIG. 5A is a ball catching device using a highly rigid material around a suturing portion of the back skin and the palmar skin from the base of the third finger to the fingertip on the ring finger side to the fingertip. Fig. 5-b is a side view thereof, and Fig. 5-c is a frontal epidermis and a palmar epidermis from the base of the ring finger facing the little finger to the fingertip. FIG. 5D is a front view of a ball-catching tool using a high-rigidity material around the suturing portion when the ball-catching tool is modeled on a computer, and FIG. 5-D is a side view thereof.

FIG. 6A is a ball catching device using a highly rigid material around the seam of the back skin and the palmar skin from the base of the ring finger to the middle finger to the fingertip. Fig. 6-b is a side view thereof, and Fig. 6-c is a back skin and a palmar skin from the base of the ring finger to the middle finger to the fingertip. FIG. 6D is a front view of a ball-catching tool using a high-rigidity material around the suturing portion when the ball-catching tool is modeled on a computer, and FIG. 6D is a side view thereof.

FIG. 7A is a front view of a ball catching device using a highly rigid material around the suturing portion of the back skin and the palmar skin from the base to the fingertip in the little finger part. -B is
FIG. 7-c is a computer-based model of a ball-catching tool using a high-rigidity material around the suturing portion of the back skin and the palmar skin from the base to the fingertip of the little finger. FIG. 7D is a side view of FIG.

FIG. 8A is a front view of a ball catching device using a highly rigid material around a suturing portion of the back skin and the palmar skin from the base to the fingertip in the ring finger portion. -B is
FIG. 8-c is a computer-based model of a ball-catching tool using a high-rigidity material around the seam of the back skin and the palmar skin from the base to the fingertip at the ring finger. FIG. 8D is a front view at the time of this, and FIG. 8D is a side view thereof.

9A is a front view of a ball catching device using a high-rigidity material around the stitches of the back skin and the palmar skin in the little finger part and the ring finger part, and FIG. FIG. 9-c is a computer model of a ball-catching tool using a high-rigidity material around the seam of the instep side and palmar side in the little finger and ring finger. FIG. 9D is a side view of FIG.

FIG. 10-a shows a high-rigidity material in a portion of the little finger from the thin leather portion of the back skin to the seam of the back skin and the palmar skin on the side not facing the ring finger side. FIG. 10B is a side view of the used ball catching tool, and FIG. 10B is a side view when the ball catching tool is modeled on a computer.

FIG. 11-a shows a high-rigidity material in a portion of the little finger from the thin leather portion of the back skin to the seam of the back skin and the palmar skin on the side facing the ring finger side. FIG. 11B is a side view of the ball catching tool used, and FIG. 11B is a side view when the ball catching tool is modeled on a computer.

FIG. 12-a is a view showing a high rigid material in a portion of the ring finger from the thin leather portion of the upper skin to the seam of the upper skin and the palmar skin facing the little finger. FIG. 12B is a side view of the ball catching tool used, and FIG. 12B is a side view when the ball catching tool is modeled on a computer.

FIG. 13-a shows a high-rigidity material in a portion of the third finger from the thin leather portion of the back skin to the seam of the back skin and the palmar skin facing the middle finger side. FIG. 13B is a side view of the ball catching tool used, and FIG. 13B is a side view when the ball catching tool is modeled on a computer.

FIG. 14A is a diagram showing a portion from the thin leather portion of the instep side skin to a suture portion of the back side skin and the palmar side skin on the side facing the little finger portion in the ring finger portion and the ring finger portion. Highly rigid material is used at the base of the little finger and ring finger at the point from the thin leather part of the back skin to the stitched part of the back skin and palmar side facing the middle finger side and at the back skin FIG. 14B is a side view of the ball catching tool when the ball catching tool is modeled on a computer.

FIG. 15-a is a front view of a catching tool using a high-rigidity material for a leather string portion connected in series from the web to the little finger tip, and FIG. 15-b is a side view thereof. , FIG.
FIG. 15-c is a front view of a ball-catching tool using a high-rigidity material for a leather string portion connected in series from the web to the little finger tip when modeled on a computer, and FIG. FIG.

FIG. 16 is a diagram showing a state in which a ball catching model (3) is attached to a hand-shaped model (5) on a computer, and a ball is perpendicular to substantially the center of the little finger of the ball catching model (3). It is a front view at the time of model (4) colliding.

FIG. 17 is a view showing a collision point (P) between a ball catching tool model (3), a Z axis, and a ball model (4) on a computer.
It is a figure which shows the positional relationship of.

FIG. 18 is a diagram illustrating a positional relationship among a ball-catcher model (3), a collision point (P), a Y-axis, and an X-axis.

19A is a diagram showing a ball catching tool model (3), a traveling direction of a ball model after a collision, and a positional relationship between a Y axis and an X axis. FIG. It is the figure which projected the advancing direction of the ball model after a collision on a YX plane.

FIG. 20-a is a diagram showing a ball catcher model (3), a traveling direction of a ball model after a collision, and a positional relationship between a Z-axis and an X-axis. It is the figure which projected the advancing direction of the ball model after a collision on a YX plane.

FIG. 21-a shows a ball catching tool model (3), a traveling direction of a ball model after a collision, an X axis, a Y axis,
FIG. 21B is a diagram illustrating the positional relationship of the Z axis, and FIG. 21B is a diagram illustrating the traveling direction of the ball model after the collision and the three-dimensional coordinates of the center point of the ball model every 0.1 msec.

22A is a diagram showing the traveling direction of the ball model after the collision and the three-dimensional coordinates of the center point of the ball model every 0.1 msec. FIG. 22B is an enlarged view of FIG. 22-c is the distance (ΔL) of the center point of the ball model moved at 0.1 msec and the X coordinate (ΔX)
FIG. 3 is a diagram showing a Y coordinate (ΔY) and a Z coordinate (ΔZ).

FIG. 23-a is a front view showing a built-in portion of a polycarbonate core material (6) in a hardball baseball glove, FIG. 23-b is a side view thereof, and FIG.
FIG. 2 is a cross-sectional view of the little finger part and the ring finger part of the glove for hardball baseball.

FIG. 24A is a front view showing a place where a high-rigidity material (2) is used in a ball catching tool, and FIG.
FIG. 24C is a side view, and FIG. 24-C is a diagram showing an external shape of the high-rigidity material (2).
4-j is a diagram showing a cross section of the high-rigidity material (2).

[Explanation of symbols]

 Reference Signs List 1 gap portion 2 high-rigidity material portion ball catcher model ball model hand model 6 polycarbonate core material 7 instep skin palm surface skin back skin fine leather Skin P Collision point

Claims (5)

[Claims] 1. A ball catching tool for baseball and softball , wherein a high rigid material is used around the little finger. 2. A ball catching device for baseball and softball , wherein high rigidity is provided around a suturing portion between the upper skin and the palmar skin from the base of the little finger that is not facing the ring finger to the fingertip. A ball catcher for baseball and softball, characterized by using a material. 3. A ball catching device for baseball and softball , wherein a high rigid material is used around a suturing portion of a back skin and a palmar skin from a base to a fingertip in a little finger portion. Baseball and softball catching tools. 4. A ball catching device for baseball and softball, wherein a suture portion of a back skin and a palmar skin at a little finger part and a ring finger part.
Baseball, characterized by using high rigidity material around
Ball catching tool for softball. 5. The physical properties of said high-rigidity material are as follows: Young's modulus is 3
The ball catcher for baseball and softball according to claim 1, wherein the ball pressure is from 0 MPa to 300 GPa.